CN101678582B - Display device for injection molding apparatus - Google Patents

Abstract

Provided is a display device for an injection molding apparatus, which melts a resin both with a melting heat generated by the rotation of a screw (13) and by a heater mounted in a cylinder (11). The display device is characterized in that the energy quantity of the neighborhood of the inner wall of the cylinder (11), that is, at least one of a temperature, a heat flow speed and a heat flow rate is calculated on the basis of the detected temperature values of temperature detectors (A-1 to E-2) arranged along the axial direction of the cylinder (11) and is displayed to correspond to the axial position of the cylinder (11). The energy quantity is displayed by continuous lines indicating the numerical values, arrows, bar graphs and numerical values. Alternatively, the energy quantity is displayed by a plurality of lines.

Description

The display unit of injection machine

Technical field

The present invention relates to a kind of display unit of injection machine, relate in particular to a kind of in cylinder the display unit of the injection machine of melting and injecting resin.

Background technology

In order to keep the quality of resin forming product in injection moulding, monitor that the molten condition of the resin in the cylinder in the management injection device is very important.Although can grasp by the temperature of resin the molten condition of the resin in cylinder, owing to can't directly measuring the temperature of resin, so proposed to calculate the energy that gives resin in cylinder and the method for estimating resin temperature.The calculating that gives the energy of resin in cylinder is that the measured value of the temperature according to casing wall, the torque of screw rod etc. is carried out.

In order to grasp the variation of resin in cylinder, proposed to show temperature curve corresponding to the design temperature of cylinder by curve map, and obtained the method (for example, with reference to patent documentation 1) of the axial temperature curve of cylinder by Analysis of Heat Transfer.

In addition, when having proposed to show observed temperature on the display of the control device that is arranged at injection machine, when observed temperature being carried out the numerical value demonstration, the different colours corresponding to kind of the pattern when controlling with temperature shows the method (for example, with reference to patent documentation 2) that this numerical value shows.

And, proposed to obtain the method (for example, with reference to patent documentation 3) that the resin temperature of resin temperature curve in the screw slot in cylinder and screw axial distributes and carries out the figure demonstration.

Patent documentation 1: TOHKEMY 2005-10387 communique

Patent documentation 2: TOHKEMY 2002-172666 communique

Patent documentation 3: Japanese kokai publication hei 6-31795 communique

In the demonstration of the display unit that has injection machine now, only the temperature curve march line chart of the cylinder of trying to achieve in advance to be shown, or only show the mensuration temperature of the limited measuring point of cylinder, do not represent the temperature as the energy size, heat flux, the heat of axial each position of cylinder.That is, in demonstration in the past, exist certain corresponding relation as prerequisite take the actual temperature of cylinder and inner resin temperature (molten condition of resin), only estimate resin state in cylinder by the temperature of cylinder.

But there is not certain corresponding relation in the temperature of actual upper cylinder half with inner resin temperature (molten condition of resin), but the Temperature Distribution axial according to the direction of heat transfer in casing wall, cylinder etc. change.Thereby, only show temperature or the temperature curve of cylinder, can't accurately grasp the resin state in cylinder.In addition, the relational dependence of the temperature of casing wall and internal resin temperature only can't accurately be grasped inner resin temperature according to the temperature of cylinder in the energy size by casing wall.And the Temperature Setting of a part that can't be by changing cylinder infers which kind of impact will be the temperature of the other parts of cylinder will be subject to.

Summary of the invention

The present invention makes in view of the above problems, and purpose is to provide a kind of display unit of injection machine, can be easily and accurately grasp resin state in cylinder.

To achieve these goals, according to an aspect of the present invention, a kind of display unit of injection machine is provided, be with the Stirring resin by screw rod and produce melting heat, and, the display unit of the injection machine that the heater by being arranged at cylinder forms to the mode of this resin heat supply in this cylinder, it is characterized in that, show accordingly near the energy size inwall of the described cylinder that the temperature detection value according to the Temperature Detector of the axial arrangement along described cylinder calculates with the axial location of described cylinder

Described energy size is the estimated value of estimating according to the described temperature detection value of the work order value of described heater and described Temperature Detector.

A kind of display unit of injection machine, be with the Stirring resin by screw rod and produce melting heat, and, the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of, it is characterized in that, show accordingly near the inwall of the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder energy size with the axial location of described cylinder

Described energy size is the estimated value that calculates according to the analogue value that is calculated by Temperature Setting condition and molding condition in advance.

The display unit of described injection machine is characterized in that, described energy size is by showing in the continuous lines along the expression numerical value of described cylinder axial position.

The display unit of described injection machine is characterized in that, described continuous lines corresponding to not in the same time or described cylinder diameter to diverse location carry out many demonstrations.

The display unit of described injection machine is characterized in that, shows that the section temperature of described cylinder distributes.

The display unit of described injection machine is characterized in that, described energy size is by showing at the arrow along the expression numerical value of described cylinder axial position.

The display unit of described injection machine is characterized in that, described energy size is by showing at the column diagram along the expression numerical value of described cylinder axial position.

The display unit of described injection machine is characterized in that, described energy size is as showing at the numerical value along described cylinder axial position.

The display unit of described injection machine is characterized in that, described energy size is at least one in temperature, heat flux, heat flow.

The display unit of described injection machine is characterized in that, shows simultaneously along the desired temperature of described cylinder axial a plurality of positions and the curve map that represents near the energy size the inwall of described cylinder.

The display unit of described injection machine, it is characterized in that, show simultaneously along the temperature detection value of described cylinder axial a plurality of positions and the curve map that represents near the energy size the inwall of described cylinder of these a plurality of positions, represent that the position of the energy size in described curve map is corresponding to described a plurality of positions of described cylinder.

The display unit of described injection machine is characterized in that, in the rear end side of described cylinder, cooling cylinder is set, and shows simultaneously the temperature detection value of assigned position of this cooling cylinder and the curve map that represents near the energy size the inwall of described cylinder.

The display unit of described injection machine is characterized in that, described injection machine is the Preplasticizing type injection machine that possesses for the plunger of the resin that is injected at described cylinder melting.

The display unit of described injection machine is characterized in that, described cylinder is the cylinder of in-built described screw rod.

The display unit of described injection machine is characterized in that, described cylinder is the cylinder of in-built described plunger.

a kind of display unit of injection machine, be with the Stirring resin by screw rod and produce melting heat, and, the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of, it is characterized in that, the energy size that is shown the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder by many continuous lines corresponding with the axial location of described cylinder, described energy size is the work order value according to described heater, the described temperature detection value of described Temperature Detector and the estimated value that heat flow is estimated.

A kind of display unit of injection machine, be with the Stirring resin by screw rod and produce melting heat, and, the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of, it is characterized in that, shown the energy size of the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder by many continuous lines corresponding with the axial location of described cylinder, described energy size is the estimated value that calculates according to the analogue value that is calculated by Temperature Setting condition and molding condition in advance.

The display unit of described injection machine is characterized in that, near the energy size the inwall of the described cylinder of the expression of at least one in described many continuous lines.

The display unit of described injection machine is characterized in that, described energy size is temperature or heat flux.

The display unit of described injection machine is characterized in that, shows that the section temperature of described cylinder distributes.

The display unit of described injection machine is characterized in that, described injection machine is the Preplasticizing type injection machine that possesses for the plunger of the resin that is injected at described cylinder melting.

The display unit of described injection machine is characterized in that, described cylinder is the cylinder of in-built described screw rod.

The effect of invention: according to the present invention, can easily grasp according to the displaying contents of display unit the state of resin in cylinder.Thus, can easily set according to the resin state in cylinder the goal-setting temperature of each one of cylinder.In addition, can easily judge in order to make resin state in cylinder become the state of expectation and will how to carry out the Temperature Setting of cylinder.

Description of drawings

Fig. 1 is the cutaway view of injection device.

Fig. 2 means the figure for the formation of the temperature control equipment of controlling the heating cylinder temperature.

Fig. 3 is that the edge is perpendicular to the cutaway view of the axial face of heating cylinder shown in Figure 2.

Fig. 4 means along the figure of the display frame of the inner wall temperature of the axial demonstration cylinder of cylinder.

Fig. 5 means along the figure of the display frame of the inner wall temperature of the axial demonstration cylinder of cylinder.

Fig. 6 means along the figure of the display frame of the inner surface heat circulation of the axial demonstration cylinder of cylinder.

Fig. 7 means along the figure of the display frame of the Temperature Distribution in the inner surface heat flow of each section of the axial demonstration cylinder of cylinder and cylinder cross section.

Fig. 8 means the figure of display frame of the Temperature Distribution in the inner wall temperature axial along the axial demonstration of cylinder along cylinder and cylinder cross section.

Fig. 9 means the figure of display frame of the Temperature Distribution in the cylinder temperature axial along the axial demonstration of cylinder along cylinder and cylinder cross section.

Figure 10 means the figure of display frame of the inner surface heat flow of each section that shows cylinder.

Figure 11 means the figure of other example of display frame of the inner surface heat flow of each section that shows cylinder.

Figure 12 means the figure of display frame of the inner surface heat flow of each section that shows cylinder.

Figure 13 is the principle pie graph be used to the estimator of the heat flux of the normal direction of the boundary face of obtaining cylinder (side end face of internal face and cooling cylinder, mould contact surface, outer surface).

Figure 14 is the principle pie graph be used to the estimator of obtaining the cylinder temperature.

Figure 15 is the principle pie graph be used to the estimator of the heat flux of the normal direction of the boundary face of obtaining cylinder (side end face of internal face and cooling cylinder, mould contact surface, outer surface).

Figure 16 means the figure that a plurality of temperature sensors are installed on cylinder.

Figure 17 means the cutaway view of an example of the injection device of Preplasticizing type injection machine.

Symbol description

10: injection device; 11: heating cylinder; 12: hopper; 13: screw rod; 14: cooling cylinder; 14a: cooling water pipe; 14b: thermocouple; 30,50,60,70,80,85,90,90A, 95: display frame; 31,51,61,81,86,91,91A: curve map; 32-37: column diagram is regional; 38-43: numerical value viewing area; 71,96: the heat flow viewing area; 72,82: isogram; 105: injection nozzle; H1, h2, h3, h4: heater; 21～24: section; 130: controller; 135: display input device; 140,150,160: estimator; 142,152,162: model; 144,154,164: wave filter; A-1～K-1, A-2～k-2: temperature sensor; 200: injection device; 202: resin metering section; 204: resin injection section; 206: the screw rod cylinder; 208: screw rod; 210,218: heater; 212: the plunger cylinder; 214: plunger; 216: plunger actuation section; 301: temperature control part; 302-1～302-4: switch; 303: power supply; 351: the temperature detection value display part; 352: temperature setting portion.

The specific embodiment

At first, referring to figs. 1 through Fig. 3, injection device and the heating cylinder that can use injection machine of the present invention described.Fig. 1 is the cutaway view of injection device 10.

The screw rod 13 that injection device 10 has heating cylinder (also only being called cylinder) 11 and can rotate and move forward and backward in heating cylinder 11.Be formed with the injection nozzle 105 of jet hole 106 in the front end setting of cylinder 11.The rear end of cylinder 11 is connected with cooling cylinder 14, and screw rod 13 runs through cooling cylinder 14 and in the interior extension of cylinder 11.Be formed with the cooling water pipe 14a of circulation cooling water in the wall of cooling cylinder 14.Assigned position at cooling cylinder 14 is formed with resin supply port 112.Be connected with hopper 12 by connecting cylinder 113 on resin supply port 112, the resin particle 115 by connecting cylinder 113 and resin supply port 112 in the interior feeding hopper 12 of cylinder 11.In addition, the periphery at cylinder 11 is equipped with plane band heater h1, h2, h3.By can at the interior heating resin particle 115 of cylinder 11, making its melting to band heater h1, h2, h3 energising.

Screw rod 13 has scraping plate part 102, is arranged on screw head 107 and the sealing 108 of scraping plate part 102 front ends.The outer peripheral face that scraping plate part 102 has at screw rod 13 bodies forms spiral helicine scraper plate 103, forms spiral helicine groove 104 by scraper plate 103.In addition, forwards be formed with successively from the rear on scraping plate part 102: conveyor zones S1 is supplied to the resin particle 115 and the forwards conveying that fall from hopper 12; Compression section S2, the resin particle 115 that compression is supplied to also makes its melting; And metering section S3, the resin of melting is carried out a certain amount of metering.In addition, the sector division of heating cylinder 11 is not limited to 3 sections of conveyor zones S1, compression section S2, metering section S3, also can be divided into the section more than 3 and band heater is arranged at each section independently.

When screw rod 13 was rotated in the forward, resin particle 115 was supplied to conveyor zones S1 from resin supply port 112, and advance in groove 104 (left in figure moves).Meanwhile, make screw rod 13 retreat (the right-hand movement in the figure), resin is stored up in the place ahead of screw head 107.In addition, the resin in groove 104 still is the shape of original particle in conveyor zones S1, becomes the semi-molten state in compression section S2, becomes the aqueous of complete melting in metering section S3.And, when injection process, when screw rod 13 is advanced, store up in the aqueous resin in screw head 107 the place aheads and inject from injection nozzle 105, be filled in the die cavity space of the cover half of die device.

Fig. 2 means the figure be used to the formation of the temperature control equipment of controlling above-mentioned heating cylinder 11 temperature.As shown in Figure 2,105 length direction is divided into 4 sections along cooling cylinder 14 to injection nozzle for heating cylinder 11 and injection nozzle 105.At this, correspondingly with the heater that possesses successively 4 sections are called the 1st section 21, the 2nd section 22, the 3rd section 23, the 4th section 24 from the section that is adjacent to cooling cylinder 14.Thereby nozzle 105 forms the 4th section 24.In addition, cooling cylinder 14 is for by flowing into the cooling hopper 12 of cooling water and near the cylinder that arranges thereof to cooling water pipe 14a, is set to for remaining in below certain temperature around hopper 12.In addition, imbed the thermocouple 14b that is useful on detected temperatures in cooling cylinder 14.

In the 1st to the 3rd section 21～23, as shown in Figure 1, band heater h1, h2, the h3 of energising are configured in the periphery of heating cylinder 11 separately.In addition, though not shown, also be provided with heater around nozzle 105, with heated nozzle 105.This heater is called heater h4.In addition, in example shown in Figure 2, upwards disposing 1 group of temperature sensor in the footpath of the 1st section 21 is temperature sensor A-1, A-2, equally, disposing 1 group of temperature sensor on the 2nd section 22 is temperature sensor B-1, B-2, and also disposing 1 group of temperature sensor on the 3rd section 23 is temperature sensor C-1, C-2.In addition, being provided with 2 groups of temperature sensors on the 4th section 24 is temperature sensor D-1, D-2; E-1, E-2.In addition, in being arranged at a pair of temperature sensor of each section, the temperature sensor A-2～E-2 close to the outside wall surface of cylinder 11 arranges at least one and gets final product.In addition, also be provided with temperature sensor X-1 (14b that is equivalent to Fig. 1) for detection of the cooling cylinder temperature on cooling cylinder 14.

Because each group temperature sensor is identical with respect to the position of heating cylinder 11 and nozzle 105, therefore describe as an example of temperature sensor A-1, A-2 shown in Figure 3 example.Temperature sensor A-1 has until near the hole of the degree of depth heating cylinder 11 inwalls in order to detect near the temperature heating cylinder 11 inwalls, to be embedded in.Temperature sensor A-2 is embedded in the position close to heater h1 than temperature sensor A-1.Temperature sensor A-1 and A-2 are arranged at mutual different position on radial direction on the same cross section of heating cylinder 11, in the example shown in Fig. 3 (a), temperature sensor A-1 and A-2 are arranged at the position of opposition side on radial direction, namely separate the position of 180 degree.

As shown in Fig. 3 (b), also temperature sensor A-1 and A-2 can be arranged at inside same position of week, and the position of staggering in the axial direction in same heater area.At this moment, the temperature sensor A-2 of the temperature outside near the temperature sensor A-1 inwall and detection more is arranged at the hole that sets separately.Result be owing to can configure a temperature sensor in one sets the hole, so the assembling of temperature sensor or maintenance become easy.

In addition, as shown in Fig. 3 (c), also temperature sensor A-1 and A-2 can be arranged at inside same position of week, and also identical position in the axial direction.At this moment, the temperature sensor A-2 of the temperature outside near the temperature sensor A-1 inwall and detection more is arranged at the same hole that sets.Result can detect hot amount of movement radially exactly, can grasp exactly near the heat flux of inwall.

As mentioned above, in the present embodiment, along the length direction of injection nozzle 105 and heating cylinder 11, a plurality of temperature sensors are set in the section of same heater, in addition, the different depth in same cross section is provided with a plurality of temperature sensors.

As shown in Figure 2, each is organized temperature sensor (for example A-1 and A-2) and is connected in controller 130.Controller 130 possesses: temperature control part 301, be given the input signal from each temperature sensor, and carry out computing according to detected value, operation result is exported in the mode of pwm signal, analog signal etc. as operational ton; Switch 302-1～302-4 carries out switch according to this operational ton; And power supply 303, switch on to the heater h1, the h2 that are arranged at the 1st to the 4th section 21～24, h3, h4 by switch 302-1～302-4.

Temperature control part 301 is connected in display input device (also only being called display unit) 135, the detected value of these display input device 135 displays temperature sensors, and input temp sets value and gives temperature control part 301.Display input device 135 preferred display devices show display setting picture as shown in the figure.In illustrated display setting picture to the detected value of the temperature sensor in showing each section by each section be the temperature detection value display part 351 of temperature detection value, temperature setting portion 352 that the temperature of each section is set as setting value etc. shows.

In the display setting picture, the detected temperatures that shows all each temperature sensors, in addition, possess switch on display unit 135, can be chosen in and use which temperature sensor that the temperature of each section of nozzle 105 and heating cylinder 11 is controlled in a plurality of temperature sensors that are arranged in same section.

On the other hand, temperature control part 301 carries out control algorithm according to the detected temperatures of the temperature sensor of being selected by display unit 135 and the difference of the temperature of having set, operation result as operational ton, is exported to the switch 302-1 that arranges corresponding to the heater of each section～302-4.That is, the operational ton of temperature control part 301 is the signals during opening of determine switch 302-1～302-4, and the dutycycle of opening that represents the time ratio that switch 302-1～302-4 opens is controlled.Controlled the conduction time of each section as a result, the temperature of the position that the selecteed temperature sensor of nozzle 105 and heating cylinder 11 configures is held in the temperature of having set.

Consist of heat flux or the heat flow of demonstration heating cylinder 11 each ones as described later and show the display unit of the resin state in heating cylinder 11 by temperature sensor A-1～E-2 shown in Figure 2, controller 130, display input device 135.

In addition, although above-mentioned injection machine is to be the so-called screw injection machine of the screw rod melting of carrying out resin, metering, injection by the pouring member in cylinder, but the present invention is not limited thereto, also can be applied to be different from the melting of resin, being that plunger is injected by pouring member, is the so-called Preplasticizing type injection machine that screw rod measures by metering element.The Preplasticizing type injection machine is the forming machine that is widely used, and as shown in figure 17, possesses the injection device 200 that is respectively arranged with resin metering section 202 and resin injection section 204.

In resin metering section 202, be screw rod 208 rotations by making metering element at screw rod in cylinder 206, agitating resin makes its melting when applying from the heat of heater 210.Utilize the rotation of screw rod 208 and be measured at the resin of screw rod with cylinder 206 interior meltings, and being sent to resin injection section 204.

In resin injection section 204, molten resin is supplied to plunger with cylinder 212.Plunger with cylinder 212 in pouring member is housed is plunger 214.Plunger 214 is by being driven and be supplied to mold injects with the interior reciprocating motion of cylinder 212 at plunger the molten resin of its front side by plunger actuation section 216.In addition, also be provided with heater 218 at plunger on cylinder 212, heated resin and kept molten condition before supplying with the molten resin injection of plunger with cylinder 212.

Below, the display case of the display unit of the injection machine of an embodiment of the invention is described.Below explanation is in order to illustrate that demonstration is undertaken by display unit 135 be used to the display case of the resin state in the cylinder 11 of grasping above-mentioned injection machine.In addition, cylinder 11 is split into 4 zones of section Z1～Z4, and the nozzle segment of cylinder 11 front ends is split into 2 zones of section Z15a and Z15b, is provided with temperature sensor at each section.

At this, display unit 135 needn't be the setting operation monitor of injection machine, can be also the common PC that arranges with the injection machine split.In addition, can be also the centralized management device of the running status of a plurality of injection machines of management.

Fig. 4 means along the figure of the display frame 30 of the inner wall temperature of the axial demonstration cylinder 11 of cylinder 11.Show curve Figure 31 of the inner wall temperature of expression cylinder 11 on the top of display frame shown in Figure 4 30.In curve Figure 31, transverse axis shows along the position of the axle of cylinder 11, shows that the rear end of cylinder 11 is to the nozzle segment of front end.The longitudinal axis of curve Figure 31 shows the inner wall temperature that is calculated by method of estimation described later.In the transverse axis of curve Figure 31, the left side is the nozzle side of cylinder, and the right side is cooling cylinder 14 sides.At this, inner wall temperature refers to be illustrated near the temperature (temperature of the position of temperature sensor A-1 shown in Figure 3) the part that the inwall of cylinder 11 contacts with resin.Although in curve Figure 31 along the axial continuous representation inner wall temperature of cylinder 11, but actual temperature detection value is only by the resulting detected value of temperature sensor A-1～E-2, and the inner wall temperature of position in addition is by the estimated value of using polynomial insertion packing to try to achieve.

The position of the temperature sensor of the section Z1～Z15b shown in addition, each ordinate shown in curve Figure 31 represents under it.For example, be positioned at Z1 demonstration directly over ordinate represent to be arranged on section Z1 temperature sensor A-1 along the axial position of cylinder.

In Fig. 4, below curve Figure 31 of expression inner wall temperature, by the temperature of each section mid portion (positions of sensors A shown in Figure 3-2) of 32～37 interior demonstration cylinders 11 inside and outside two walls in the column diagram zone.Also show the Temperature numerical that is represented by column diagram in each column diagram zone 32～37.In addition, be provided with numerical value viewing area 38～43 below each column diagram zone 32～37, show the desired temperature of the mid portion of cylinder 11 inside and outside two walls, show the desired temperature of the mid portion of cylinder 11 inside and outside two walls by each section with numerical value.

In addition, also can be near outer wall the set temperature sensor, show the detected value at this place.At this moment, can grasp near the temperature the outer wall close to more from heater.Because near the temperature outer wall responds rapidly heater, so can make the controlled lifting of heater.

In section Z1, the temperature of the mid portion of inside and outside two walls is set to 170 degree (setting value 170 ℃), and the temperature of the mid portion of actual inside and outside two walls is demonstrated by column diagram and numerical value and is in 170 ℃.In addition, in section Z2, the temperature of the mid portion of inside and outside two walls is set to 190 ℃ (setting value 190 ℃), and the temperature of the mid portion of actual inside and outside two walls is demonstrated by column diagram and numerical value and is in 190 ℃.In section Z3, the temperature of the mid portion of inside and outside two walls is set to 200 ℃ (setting value 200 ℃), and the temperature of the mid portion of actual inside and outside two walls is demonstrated by column diagram and numerical value and is in 200 ℃.In section Z4, the temperature of the mid portion of inside and outside two walls is set to 200 ℃ (setting value 200 ℃), and the temperature of the mid portion of actual inside and outside two walls is demonstrated by column diagram and numerical value and is in 200 ℃.In section Z15a and Z15b, the temperature of the mid portion of inside and outside two walls also is set to 200 ℃ (setting value 200 ℃), and the temperature of the mid portion of actual inside and outside two walls is demonstrated by column diagram and numerical value and is in 200 ℃.

In example shown in Figure 4, the temperature of cylinder 11 is identical with setting value in each section.Can set in curve Figure 31 of the estimation temperature of reference cylinder 11 inwalls.

So, owing on each heater h1～h3 on being equipped on axially, 1 group of temperature sensor being installed, therefore in the axial direction the temperature of section of 1 heater heating of a location estimation, show curve Figure 31 according to estimated value.Therefore, for example in the example of Fig. 1 and Fig. 2, the 1st section 21 of being controlled by heater h1 is the estimation region of temperature sensor A-1, A-2.

And, the detected value of the estimation temperature of the inwall that can be relatively shown by curve Figure 31 and the temperature sensor that shows in column diagram zone 32～37.For example, even near the detected value of the temperature sensor the mid portion of inside and outside wall or outer wall is same value, can not determine that the molten condition of resin is in stable.At this, the detected value of the estimation temperature by the inwall that relatively shown by curve Figure 31 and the temperature sensor that shows in column diagram zone 32～37 can rest in the temperature that radially goes up cylinder interior higher still lower.For example, in section Z3,34 temperature that show are 200 ℃ in column diagram zone, and on the other hand, the estimation temperature of the inwall that curve is shown in Figure 31 is approximately 210 ℃, and the temperature that demonstrates near inwall temperature and be resin is higher.So, by grasping along the variation of the estimation temperature of the axial inwall of cylinder, the repetition stability of Temperature Distribution can be confirmed, the stability of resin melting state can be grasped.

In addition, desired temperature below show the insulation design temperature.In Fig. 4, the insulation design temperature is set as 100 ℃.The insulation design temperature is the temperature of the operation of the injection machine resin in preheating cylinder 11 when stopping.Show the supervision scope of temperature below the insulation design temperature.Supervision scope in this temperature is set as 20 ℃.In addition, show whether carry out temperature monitoring at each section below the supervision scope of temperature.In example shown in Figure 4, carry out temperature monitoring and show " connection " in section Z1, Z2, Z4, Z15a, Z15b.On the other hand, be set as in section Z3 and do not carry out temperature monitoring, and do not show " connection ".

Except above demonstration, show in order to prevent operation screw rod 13 under the cooling state of cylinder 11, the screw rod cold start time of preventing is set as " 15 minutes ".In addition, when abnormal, heater is processed and is set as " insulation ", shows that the cylinder 11 when abnormal to injection machine is incubated.

As mentioned above, in display frame shown in Figure 4, the inner wall temperature of cylinder 11 is corresponding to the axial location of cylinder 11 and represented by continuous lines in curve Figure 31, and can easily to grasp resin temperatures in cylinder 11 be resin state in cylinder 11 by observing curve Figure 31.That is, the inner wall temperature of cylinder 11 is equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

Fig. 5 means along the figure of the display frame 50 of the inner wall temperature of the axial demonstration cylinder 11 of cylinder 11.Show curve Figure 51 of the inner wall temperature of expression cylinder 11 on the top of display frame shown in Figure 5 50.Curve Figure 51 is identical with curve Figure 31 shown in Figure 4, and difference is that continuous lines shows many (in Fig. 5 being 2).In 2 continuous lines, meaned the line of the inner wall temperature of the current time identical with the continuous lines of curve Figure 31 shown in Figure 4 by the continuous lines shown in solid line, meaned the line of the inner wall temperature before 15 minutes of present moment by the continuous lines shown in dotted line.That is, can be on the basis of the inner wall temperature of present time in curve Figure 51 the inner wall temperature of expression time in the past.Thus, can easily identify the passing of the inner wall temperature of cylinder 11, i.e. the passing of the resin state in cylinder 11.

In addition, the displaying contents beyond curve Figure 51 of display frame 50 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Fig. 6 means along the figure of the display frame 60 of the inner surface heat circulation of the axial demonstration cylinder 11 of cylinder 11.Show curve Figure 61 of the inner surface heat circulation of expression cylinder 11 on the top of display frame shown in Figure 6 60.In curve Figure 61, transverse axis represents the axial location of cylinder 11, and the longitudinal axis represents near the heat flux inwall.In the transverse axis of curve Figure 61, the left side is the nozzle side of cylinder, and the right side is cooling cylinder 14 sides.Ordinate shown in curve Figure 61 means the line of the differentiation of section, and for example the ordinate between the demonstration of the demonstration of Z1 and Z2 represents section Z1 that cylinder is axial and the boundary position between section Z2.

The inner surface heat circulation refers to be illustrated in the value that the heat of the part that the inwall of cylinder 11 contacts with resin moves.Although in curve Figure 61, axially represent continuously the inner surface heat circulation along cylinder 11, but the part that is positioned at positive side in the inner surface heat circulation represents heat from the lateral medial movement of cylinder 11, and the part that is positioned at minus side in the inner surface heat circulation represents that heat moves laterally from the inboard of cylinder 11.In other words, the part that is positioned at positive side in the inner surface heat circulation represents heat from cylinder 11 (heater) to resin transfer, and the part that is positioned at minus side in the inner surface heat circulation represents that heat 11 moves from resin to cylinder.In addition, in curve Figure 61, area S1, the S2 that the continuous lines of expression inner surface heat circulation is positioned at the part of positive side represents that area S3, S4 that heat flow from cylinder 11 to resin that supply with from, the continuous lines of expression inner surface heat circulation are positioned at the part of minus side represent the heat flow that moves to cylinder 11 from the resin of cylinder 11.

As mentioned above, by observing curve Figure 61, moving direction, translational speed and the mobile heat of the heat of cylinder 11 each ones can be easily grasped, the resin state in cylinder 11 can be easily judged.That is, the inner surface heat circulation of curve Figure 61 is equivalent to represent near the value of the energy cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy of the resin in cylinder 11.

In addition, the inner surface heat circulation of cylinder 11 is the estimated values by the estimator computing.Illustrate in the back for the method for obtaining the inner surface heat circulation by the computing of estimator.In addition, the displaying contents beyond curve Figure 61 of display frame 60 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Fig. 7 means along the figure of the display frame 70 of the Temperature Distribution in the heat flow of each section of the axial demonstration cylinder 11 of cylinder 11 and cylinder 11 cross sections.The heat flow viewing area 71 that shows on the top of display frame shown in Figure 7 70 that the hot-fluid numberical value of quantity of each section to expression cylinder 11 shows and be isogram (コ Application タ one figure) 72 to the distribution map that the thermoisopleth in the cross section of cylinder 11 shows.In isopleth Figure 72, although the part of being surrounded by thermoisopleth has been carried out color differentiating, distinguished by grid lines (Net hangs け) in order to facilitate in Fig. 7, represent color differentiating by the kind of grid lines.Ordinate shown in isopleth Figure 72 means the line of the differentiation of section, for example represents section Z1 on cylinder axially and the boundary position between section Z2 at the ordinate between the demonstration of the demonstration of Z1 and Z2.

In heat flow viewing area 71, the heat flow of each section of cylinder 11 is by numeric representation.The hot-fluid numberical value of quantity is that positive section represents heat from the lateral medial movement of cylinder 11, and the hot-fluid numberical value of quantity represents that for negative section heat moves laterally from the inboard of cylinder 11.In other words, the hot-fluid numberical value of quantity is that positive section represents to supply with heat from 11 pairs of resins of cylinder, and the hot-fluid numberical value of quantity is become separated in flight to cylinder 11 for negative section represents heat.

By observing value and the isopleth Figure 72 of the heat flow shown in heat flow viewing area 71, can easily grasp the moving direction of heat of cylinder 11 each ones and the Temperature Distribution in heat flow and cylinder 11, can easily judge the resin state in cylinder 11.That is, the value of the heat flow shown in heat flow viewing area 71 and isopleth Figure 72 are equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

In addition, the value of the heat flow shown in heat flow viewing area 71 is the estimated value by the estimator computing.Illustrate in the back for the method for obtaining heat flow by the computing of estimator.In addition, the displaying contents beyond the heat flow viewing area 71 of display frame 70 and isopleth Figure 72 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.In addition, in Fig. 7, show although color differentiating is carried out in the zone that is surrounded by thermoisopleth, also can carry out color differentiating by thermoisopleth and show.

Fig. 8 means the figure of display frame 80 of the Temperature Distribution in the inner wall temperature axial along the axial demonstration of cylinder 11 along cylinder 11 and cylinder 11 cross sections.Show on the top of display frame shown in Figure 8 80 and represent along curve Figure 81 of the axial inner wall temperature of cylinder 11 and the isothermal isopleth Figure 82 that represents cylinder 11 cross sections.Isopleth Figure 82 is the same with isopleth Figure 72 shown in Figure 7, although the part of being surrounded by thermoisopleth has been carried out color differentiating, is distinguished by grid lines in order to facilitate in Fig. 8, represents color differentiating by the kind of grid lines.Ordinate shown in isopleth Figure 82 means the line of the differentiation of section, for example represents section Z1 on cylinder axially and the boundary position between section Z2 at the ordinate between the demonstration of the demonstration of Z1 and Z2.

Although curve Figure 81 is the same with curve Figure 31 shown in Figure 4, time shaft is set to another transverse axis, represents the inner wall temperature in the moment in the past by time shaft.In curve Figure 81, solid line represents the inner wall temperature of present moment, and dotted line represents the inner wall temperature in the moment before 10 minutes, the inner wall temperature in the single-point line moment of expression before 20 minutes.In addition, needn't be only necessarily dotted line or single dashdotted difference, also can carry out color differentiating and show.At this moment, even also can easily judge the kind of line in the position of leaving monitor, can prevent misidentification.

By observe shown in curve Figure 81 now and inner wall temperature and isopleth Figure 82 in the past, can easily grasp the passing of the temperature of cylinder 11 each ones, can easily judge the resin state in cylinder 11.That is, the inner wall temperature shown in curve Figure 81 and isopleth Figure 82 are equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

In addition, the value of the inner wall temperature shown in curve Figure 81 is the estimated value by the estimator computing.Illustrate in the back for the method for obtaining inner wall temperature by the computing of estimator.In addition, the displaying contents beyond curve Figure 81 of display frame 80 and isopleth Figure 82 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Fig. 9 means the figure of display frame 85 of the Temperature Distribution in the cylinder temperature axial along the axial demonstration of cylinder 11 along cylinder 11 and cylinder 11 cross sections.Show on the top of display frame shown in Figure 9 85 and represent along curve Figure 86 of the axial cylinder temperature of cylinder 11 and the isothermal isopleth Figure 82 that represents cylinder 11 cross sections.Isopleth Figure 82 is the same with isopleth Figure 72 shown in Figure 7, although the part of being surrounded by thermoisopleth has been carried out color differentiating, is distinguished by grid lines in order to facilitate in Fig. 8, represents color differentiating by the kind of grid lines.

Although curve Figure 86 is the same with curve Figure 31 shown in Figure 4, represent to be set to another transverse axis from the axle of the distance of inside wall of cylinder face.Thus, represent from the cylinder temperature of the different distance of inside wall of cylinder face in curve Figure 86.Solid line in curve Figure 86 represents to be equivalent to the inner wall temperature of the position (distance be 0) of inside wall of cylinder face, and dotted line represents from the cylinder temperature of the distance of inside wall of cylinder face 10mm left and right, and single-point line expression is from the cylinder temperature of the distance of inside wall of cylinder face 20mm left and right.In addition, this moment is also the same with Fig. 8, needn't be only necessarily dotted line or single dashdotted difference, also can carry out color differentiating and show.At this moment, even also can easily judge the kind of line in the position of leaving monitor, can prevent misidentification.

By observing cylinder temperature and the isopleth Figure 82 of a plurality of distances shown in curve Figure 86, can easily grasp the passing of the temperature of cylinder 11 inside, can easily judge the resin state in cylinder 11.That is, the cylinder temperature shown in curve Figure 86 and isopleth Figure 82 are equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

In addition, the temperature value shown in curve Figure 86 is the estimated value by the estimator computing.Illustrate in the back for the method for obtaining temperature by the computing of estimator.In addition, the displaying contents beyond curve Figure 86 of display frame 85 and isopleth Figure 82 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Figure 10 means the figure of display frame 90 of the heat flow of each section that shows cylinder 11.Show curve Figure 91 of the heat flow of each section that represents cylinder 11 on the top of display frame shown in Figure 10 90.Curve Figure 91 is represented the heat flow of each section of cylinder 11 by arrow.Cylinder axial location in section shown in arrow locations represents under it.The moving direction of the direction indication heat of arrow, the size of arrow represents the size of heat flow.In addition, because the heat flow of section Z15a and Z15b is little, so be not by arrow but represented by star, surpassed the scope of curve map due to the arrow front end of section Z1, so the STA representation of arrow front end to interrupt.Above-mentioned arrow is corresponding to the hot-fluid numberical value of quantity of Fig. 7.

In the section of positive side (downwards), the expression heat is from the lateral medial movement of cylinder 11 at the arrow of heat flow, in the section of minus side (make progress), represents that heat moves laterally from the inboard of cylinder 11 at the arrow of heat flow.In other words, represent to supply with from cylinder 11 to resin heat at the arrow of heat flow in the section of positive side, represent that at the arrow of heat flow heat 11 moves from resin to cylinder in the section of minus side.

By observing the arrow of the heat flow shown in curve Figure 91, can easily grasp moving direction and the heat flow of the heat of cylinder 11 each ones, can easily judge the resin state in cylinder 11.That is, the arrow of the heat flow shown in curve Figure 91 is equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

The position of the temperature sensor of the section Z1～Z15b shown in each ordinate shown in curve Figure 91 represents under it.For example, be positioned at Z1 demonstration directly over ordinate represent to be arranged on section Z1 temperature sensor A-1 along the axial position of cylinder.

In addition, be estimated value by the estimator computing by the value of the heat flow shown in arrow.Illustrate in the back for the method for obtaining heat flow by the computing of estimator.In addition, the displaying contents beyond curve Figure 91 of display frame 90 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Figure 11 means the figure of other example of display frame of the inner surface heat flow of each section that shows cylinder.Show the curve map 91A of the heat flow of each section that represents cylinder 11 on the top of display frame 90A shown in Figure 11.Curve map 91A is represented the heat flow of each section of cylinder 11 by column diagram.Cylinder axial location in section shown in its time of the positional representation of column diagram is the position that is provided with corresponding temperature sensor.Just (+) side of the longitudinal axis of curve map 91A and negative (-) side represent the moving direction of heat, and the height of column diagram represents the size of heat flow.In addition, because the heat flow of section Z15a and Z15b is little of 0, so do not show column diagram.In addition, surpassed the scope of curve map due to the value of the heat flow of section Z1, so the STA representation of column diagram front end to interrupt.Above-mentioned column diagram is corresponding to the hot-fluid numberical value of quantity of Fig. 7.

In the section that the column diagram of heat flow extends to positive side (downwards), the expression heat is from the lateral medial movement of cylinder 11, in the section that the column diagram of heat flow extends to minus side (make progress), represents that heat moves laterally from the inboard of cylinder 11.In other words, heat is supplied with in expression from cylinder 11 to resin in the section that column diagram extends to positive side, and the expression heat 11 moves from resin to cylinder in the section that the column diagram of heat flow extends to minus side.

The column diagram that extends by the positive side of for example subtend and the column diagram that extends to minus side carry out color differentiating, or give different grid lines patterns and show, can identify the moving direction of the heat of the position shown in column diagram at once.Use the method for different hatchings in Figure 11 in the column diagram that extends to positive side and the column diagram that extends to minus side.

By observing the column diagram of the heat flow shown in curve map 91A, can easily grasp moving direction and the heat flow of the heat of cylinder 11 each ones, can easily judge the resin state in cylinder 11.That is, the column diagram of the heat flow shown in curve map 91A is equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

The position of the temperature sensor of the section Z1～Z15b shown in each ordinate shown in curve map 91A represents under it.For example, be positioned at Z1 demonstration directly over ordinate represent to be arranged on section Z1 temperature sensor A-1 along the axial position of cylinder.

In addition, be estimated value by the estimator computing by the value of the heat flow shown in column diagram.Illustrate in the back for the method for obtaining heat flow by the computing of estimator.In addition, the displaying contents beyond the curve map 91A of display frame 90A is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Figure 12 means the figure of display frame 95 of the heat flow of each section that shows cylinder 11.Be provided with the heat flow viewing area 96 of hot-fluid numberical value of quantity of each section of expression cylinder 11 on the top of display frame shown in Figure 12 95.Shown the heat flow of each section of cylinder 11 by numerical value in heat flow viewing area 96.Numerical symbol represents the moving direction of heat, and the size of the absolute value of numerical value represents the size of heat flow.In heat flow shown in heat flow viewing area 96 and Figure 10, the heat flow shown in arrow is identical, is represented by numerical value, and is identical with the numerical value of the heat of Fig. 7.

By observing symbol and the absolute value of the heat flow shown in heat flow viewing area 96, can easily grasp moving direction and the heat flow of the heat of cylinder 11 each ones, can easily judge the resin state in cylinder 11.That is, the hot-fluid numberical value of quantity shown in heat flow viewing area 96 is equivalent to represent near the value of the energy size cylinder 11 inwalls, thereby, be equivalent to represent the value of the energy size of the resin in cylinder 11.

In addition, be estimated value by the estimator computing by the value of the heat flow shown in numerical value.Illustrate in the back for the method for obtaining heat flow by the computing of estimator.In addition, the displaying contents beyond the zone 96 of display frame 95 is the same with display frame 30 shown in Figure 4, and the description thereof will be omitted.

Below, the inner wall temperature of estimation cylinder 11 and the method for estimation of heat flow are described.

Figure 13 is the principle pie graph be used to the estimator 140 of the heat flux of the normal direction of the boundary face of obtaining cylinder 11 (side end face of internal face and cooling cylinder 14, mould contact surface, outer surface).Estimator 140 is made of electronic circuit and/or the software program in controller 130, comprises model 142 and the wave filter 144 of cylinder 11.

At this, controller needn't be necessarily be arranged in same control device with the controller of controlling each drive division of injection machine, can be also for example the common PC that the control device split with injection machine arranges.In addition, can be also the monitor of centralized management device of the running status of a plurality of injection machines of management.

The pre-stored heat-transfer character that cylinder 11 is arranged in estimator 140.Perhaps, being fit to the mode of specific cylinder, make estimator 140 according to the heat-transfer character of this specific cylinder.The heat-transfer character of cylinder 11 is cylinder 11 integral body to be divided into limited zone express, and is expressed the quantitative relationship of the physical quantity that comprises at least " temperature that each is regional ", " time diffusion of each regional temperature ", " heat flow between each zone and resin, screw rod ", " atmospheric temperature ", " heater that cylinder is heated open dutycycle " by following linear algebraic equation formula (1).This linear algebraic equation formula (1) is equivalent to model 142.

(formula 1)

$-C\left[\begin{array}{c}\frac{d}{\mathrm{dt}}{\mathrm{\θ}}_1\\ .\\ .\\ .\\ \frac{d}{\mathrm{dt}}{\mathrm{\θ}}_n\end{array}\right]=\mathrm{\α}\left[\begin{array}{c}{\mathrm{\θ}}_1\\ .\\ .\\ .\\ {\mathrm{\θ}}_n\end{array}\right]+R_i\left[\begin{array}{c}{Q}_{i1}\\ .\\ .\\ .\\ Q_{\mathrm{im}}\end{array}\right]+{\mathrm{\α}}_o\left[\begin{array}{c}{\mathrm{\θ}}_1-{\mathrm{\θ}}_a\\ .\\ .\\ .\\ {\mathrm{\θ}}_n-{\mathrm{\θ}}_a\end{array}\right]-\mathrm{Qh}\left[\begin{array}{c}{\mathrm{\η}}_1\\ .\\ .\\ .\\ {\mathrm{\η}}_p\end{array}\right]...\left(1\right)$

In above-mentioned linear algebraic equation formula, each mark represents following key element.

θ ₁θ _n: the temperature that each is regional

Qi ₁Qi _m: the heat flow between each zone and resin, screw rod

θ _a: atmospheric temperature

η ₁η _p: the heater that cylinder is heated open dutycycle (working time)

T: constantly

C: the thermal capacity that each is regional

α: the heat transfer coefficient that each is interregional

R _i: the matrix in the zone that expression contacts with resin, screw rod direct heat

α _o: to the heat transfer coefficient (characteristic, the installment state that also represent cylinder cover, thermocouple) of atmosphere heat radiation

Q _h: each heater heats each regional ability (the heating distribution, configuration, the thermo-contact state that also represent heater) with nominal operation

In estimator 140, the estimated value of each regional temperature of the cylinder 11 that model 142 maintenances of cylinder 11 are present.And, estimator 140 according to should " temperature that each is regional ", " heat flow between each zone and resin, screw rod ", " atmospheric temperature ", " heater that cylinder is heated open dutycycle ", use the formula (1) of the heat-transfer character that represents above-mentioned cylinder 11 to calculate " time diffusion of each regional temperature ".At this, regional for m of surrounding corresponding to heat flow Q corresponding to n the area configurations of each regional θ.In addition, the dutycycle η that opens of heater configures p corresponding to the quantity of heater.And, according to " time diffusion of each regional temperature " that calculate and " the correction data of each regional temperature " described later, the estimated value of " temperature that each is regional " that model 142 self keeps is increased and decreased.Can use the estimated value of this " temperature that each is regional ", calculate the temperature of inwall and any depth location by interpolation or extrapolation, and show.Thus, can show the temperature shown in 31,51,81,86 or isopleth Figure 72,82 of Fig. 4～Fig. 9 on monitor.

" the correction data of each regional temperature " and " heat flow " obtain by wave filter 144.Wave filter 144 reads in the deviation of estimated value of the temperature in zone corresponding with this detected value in the estimated value of " temperature that each is regional " that " detected value of bulk temperature " and model 142 keep.Use the detected value of the temperature sensor that nozzle and heating cylinder possess as " detected value of bulk temperature ".And wave filter 144 reaches " the correction data of each regional temperature " to model 142 outputs " heat flow between each zone and resin, screw rod ".Preferred filter 144 can be carried out differential, integral and calculating.Can use " heat flow between each zone and resin, screw rod " in this output, show on monitor Fig. 6, Fig. 7, Figure 10, Figure 11, Figure 12 curve Figure 61,91 or viewing area 71,96 shown in heat flux or heat flow.

In addition, also can with each mode corresponding to zone that makes by model, the detected value of each temperature sensor is carried out interpolation, calculate the detected value of each regional temperature.At this moment, can obtain deviation at All Ranges.

As mentioned above, the heat flux of the normal direction of the boundary face of cylinder 11 (side end face of internal face and cooling cylinder 14, mould contact surface, outer surface) is to be estimated by estimator 140 according to the temperature detection value of the work order value (opening the command value of dutycycle) of the heater that cylinder 11 is heated and temperature sensor.Use shows on the monitor of display input device 135 in this " heat flow " that calculates and " temperature estimated value ".And, can also be presented at detected temperature detection value in actual heating cylinder on the monitor of display input device 135.

In addition, the heat flux of the boundary face of cylinder 11 is not limited to by estimator as above and tries to achieve, and such as also carrying out that pyrolysis is analysed or the simulation of resin flows parsing etc. according to Temperature Setting condition and molding condition, calculates according to the value of being tried to achieve by simulation.

Figure 14 is other principle pie graphs be used to the estimator 150 of the temperature of obtaining cylinder 11.Estimator 150 is made of electronic circuit and/or the software program in controller 130, comprises model 152 and the wave filter 154 of cylinder 11.

The pre-stored heat-transfer character that cylinder 11 is arranged in estimator 150.Perhaps, being fit to the mode of specific cylinder, make estimator 150 according to the heat-transfer character of this specific cylinder.The heat-transfer character of cylinder 11 is cylinder 11 integral body to be divided into limited zone express, and is expressed the quantitative relationship of the physical quantity that comprises at least " temperature that each is regional ", " time diffusion of each regional temperature ", " heat flow between each zone and resin, screw rod ", " atmospheric temperature ", " heater that cylinder is heated open dutycycle " by above-mentioned linear algebraic equation formula (1).This linear algebraic equation formula (1) is equivalent to model 152.

In estimator 150, the model 152 of cylinder 11 keeps the estimated value of " each regional temperature " of the All Ranges except the inner wall area of present cylinder 11.And, estimator 150 is according to the detected value of " temperature that each is regional " of " temperature that each is regional " except this inner wall area and inner wall area, " atmospheric temperature ", " heater that cylinder is heated open dutycycle ", and use represents that the formula (1) of the heat-transfer character of above-mentioned cylinder 11 calculates " time diffusion of each regional temperature " except inner wall area.And, according to " time diffusion of each regional temperature " except inner wall area that calculate and " the correction data of each regional temperature " described later, the estimated value of " temperature that each is regional " except inner wall area that model 152 self keeps is increased and decreased.Can use the estimated value of this " each regional temperature ", show the Temperature Distribution of the axial cross section of the cylinder 11 shown in isopleth Figure 72,82 of Fig. 7, Fig. 8, Fig. 9 on monitor.

In addition, detected value to " each regional temperature " of inner wall area carries out time diffusion, according to the estimated value of the detected value of " each regional temperature " of its result and inner wall area and " each regional temperature " except inner wall area, " atmospheric temperature ", " heater that cylinder is heated open dutycycle ", similarly use the formula (1) of the heat-transfer character of expression cylinder 11 to calculate " heat flow between each zone and resin, screw rod ".Can use " heat flow " that calculate at this, show on monitor Fig. 6, Fig. 7, Figure 10, Figure 11, Figure 12 curve Figure 61,91 and viewing area 71,96 shown in heat flux or heat flow.In addition, curve Figure 31,51,81 of Fig. 4～Fig. 9,86 and isopleth Figure 72,82 shown in inner wall temperature or cylinder temperature show with the detected value that is provided near the temperature sensor inwall.

" the correction data of each regional temperature " obtain by wave filter 154.Wave filter 154 reads in the deviation of estimated value of the temperature in zone corresponding with this detected value in the estimated value of " each regional temperature " that " detected value of bulk temperature " and model 152 keep.Use the detected value of the temperature sensor that nozzle and heating cylinder possess as " detected value of bulk temperature ".And wave filter 154 is to model 152 outputs " the correction data of each regional temperature ".Preferred filter 144 is for carrying out the formation of differential, integral and calculating.

In addition, mode that also can be corresponding with each field that makes by model is carried out interpolation to the detected value of each temperature sensor, calculates the detected value of each regional temperature.At this moment, can obtain deviation at All Ranges.

As mentioned above, the temperature of cylinder 11 is to be estimated by estimator 150 according to the temperature detection value of the work order value (opening the command value of dutycycle) of the heater that cylinder 11 is heated and temperature sensor.And, not only be presented at " heat flow " that calculate in model 152 and also show " heat flux ".In addition, use " temperature estimated value " and " temperature detection value ", calculate the temperature of inwall and any depth location by interpolation or extrapolation, and show on monitor.And, can also be presented at detected temperature detection value in actual heating cylinder on the monitor of display input device 135.

In addition, the heat flux of the boundary face of cylinder 11 is not limited to by estimator as above and tries to achieve, and such as also carrying out that pyrolysis is analysed or the simulation of resin flows parsing etc. according to Temperature Setting condition and molding condition, calculates according to the value of being tried to achieve by simulation.

Figure 15 is the principle pie graph be used to the estimator 160 of the heat flux of the normal direction of the boundary face of obtaining cylinder 11 (side end face of internal face and cooling cylinder 14, mould contact surface, outer surface).Estimator 160 is made of electronic circuit and/or the software program in controller 130, comprises model 162 and the wave filter 164 of cylinder 11.

At this, controller needn't be necessarily be arranged in same control device with the controller of controlling each drive division of injection machine, can be also for example the common PC that the control device split with injection machine arranges.In addition, can be also the monitor of centralized management device of the running status of a plurality of injection machines of management.

The pre-stored heat-transfer character that cylinder 11 is arranged in estimator 160.Perhaps, being fit to the mode of specific cylinder, make estimator 160 according to the heat-transfer character of this specific cylinder.The heat-transfer character of cylinder 11 is cylinder 11 integral body to be divided into limited zone express, and is expressed the quantitative relationship of the physical quantity that comprises at least " temperature that each is regional ", " time diffusion of each regional temperature ", " heat flow between each zone and resin, screw rod " by following linear algebraic equation formula (2).This linear algebraic equation formula (2) is equivalent to model 162.

(formula 2)

$-C\left[\begin{array}{c}\frac{d}{\mathrm{dt}}{\mathrm{\&theta;}}_{i1}\\ .\\ .\\ .\\ \frac{d}{\mathrm{dt}}{\mathrm{\&theta;}}_{\mathrm{im}}\end{array}\right]={\mathrm{\&alpha;}}_i\left[\begin{array}{c}{\mathrm{\&theta;}}_{i1}\\ .\\ .\\ .\\ {\mathrm{\&theta;}}_{\mathrm{im}}\end{array}\right]+{\mathrm{\&alpha;}}_o\left[\begin{array}{c}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="o"\; filenames="H2008800178280E00021.png,H2008800178280E00041.png"\; state="\{\{state\}\}">o</figure-callout>}1}\\ .\\ .\\ .\\ {\mathrm{\&theta;}}_{\mathrm{on}}\end{array}\right]+R_i\left[\begin{array}{c}{Q}_{i1}\\ .\\ .\\ .\\ Q_{\mathrm{im}}\end{array}\right]...\left(2\right)$

In above-mentioned linear algebraic equation formula, each mark represents following key element.

θ _i1θ _in: near each regional temperature of cylinder inboard (inwall)

θ _o1θ _on: near each regional temperature in the cylinder outside (outer wall)

Qi ₁Qi _m: the heat flow between each zone of cylinder inboard and resin, screw rod

T: constantly

C: each regional thermal capacity of cylinder inboard

α _i: each interregional heat transfer coefficient of cylinder inboard

α _o: each the interregional heat transfer coefficient outside cylinder

R _i: the matrix in the zone that expression contacts with resin, screw rod direct heat

In estimator 160, near the estimated value of each regional temperature of the inboard (inwall) of the cylinder 11 that model 162 maintenances of cylinder 11 are present.And, estimator 160 is according to should " cylinder each regional temperature of the inboard " reach " cylinder each regional temperature of the outside ", " heat flow between each zone and resin, screw rod ", and use represents that the formula (2) of the heat-transfer character of above-mentioned cylinder 11 calculates " time diffusion of each regional temperature of cylinder inboard ".At this, corresponding to the regional temperature θ in the outside _oN area configurations for surrounding the regional temperature θ corresponding to the inboard _iM zone and regional corresponding to m of heat flow Q.And according to " time diffusion of each regional temperature of cylinder inboard " and " the correction data of each regional temperature " described later that calculate, the estimated value of " cylinder each regional temperature of the inboard " that makes that model 162 self keeps increases and decreases.Can use the estimated value of this " temperature that each is regional ", calculate the temperature of inwall and any depth location by interpolation or extrapolation, show.Thus, can show the temperature shown in 31,51,81,86 or isopleth Figure 72,82 of Fig. 4～Fig. 9 on monitor.

" the correction data of each regional temperature of cylinder inboard " and " heat flow " obtain by wave filter 164.The deviation of the estimated value of the temperature in the zone corresponding with this detected value in the estimated value of " cylinder each regional temperature of the inboard " that wave filter 164 reads in that " detected value of bulk temperature " and model 162 keep.Use the detected value of the temperature sensor that nozzle and heating cylinder possess as " detected value of bulk temperature ".And wave filter 164 reaches " the correction data of each regional temperature of cylinder inboard " to model 162 output " heat flow between each zone of cylinder inboard and resin, screw rod ".Preferred filter 164 can be carried out differential, integral and calculating.Can use " heat flow between each zone of cylinder inboard and resin, screw rod " in this output, show on monitor Fig. 6, Fig. 7, Figure 10, Figure 11, Figure 12 curve Figure 61,91 or viewing area 71,96 shown in heat flux or heat flow.

In addition, mode that also can be corresponding with each field that makes according to model is carried out interpolation to the detected value of each temperature sensor, calculates the detected value of each regional temperature.At this moment, can obtain deviation at All Ranges.

As mentioned above, the heat flux of the normal direction of the boundary face of cylinder 11 (side end face of internal face and cooling cylinder 14, mould contact surface, outer surface) is according to the temperature detection value of temperature sensor and estimated by estimator 160.Use shows on the monitor of display input device 135 in this " heat flow " that calculates and " temperature estimated value ".And, can also be presented at detected temperature detection value in actual heating cylinder on the monitor of display input device 135.

In addition, at this as shown in Figures 1 and 2, the example that 1 group of temperature sensor is installed on each heater h1～h3 on being equipped on axially is illustrated.But, also can configure in the axial direction many group temperature sensors on 1 heater.For example, also can be with respect to the many groups of heater h1 configuration temperature sensor A-1, A-2.At this moment, the 1st section 21 of heater h1 control is split into a plurality of estimation regions.Thereby, even in a section, also can grasp temperature with a plurality of estimation regions.At this moment, also can come displays temperature by each estimation region.

Be specially, as shown in figure 16,105 length direction is divided into 4 sections along cooling cylinder 14 to injection nozzle for heating cylinder 11 and injection nozzle 105.At this, successively 4 sections are called the 1st section 21, the 2nd section 22, the 3rd section 23, the 4th section 24 from the section that is adjacent to cooling cylinder 14.Thereby nozzle 105 forms the 4th section 24.In addition, cooling cylinder 14 is for cooling hopper 12 and near and cylinder that arrange thereof, is set to remain in below certain temperature around will hopper 12.

As shown in Figure 1, band heater h1, h2, the h3 of energising are configured in the periphery of heating cylinder 11 separately in the 1st to the 3rd section 21～23.In addition, though not shown, also be provided with heater around nozzle 105, with heated nozzle 105.This heater is called heater h4.In addition, in example shown in Figure 15, dispose 3 groups of temperature sensor A-1, A-2 on the length direction of the 1st section 21; B-1, B-2; C-1, C-2, same, dispose 3 groups of temperature sensor D-1, D-2 on the 2nd section 22; E-1, E-2; F-1, F-2 also dispose 3 groups of temperature sensor G-1, G-2 on the 3rd section 23; H-1, H-2; I-1, I-2.In addition, be provided with 2 groups of temperature sensor J-1, J-2 on the 4th section 24; K-1, K-2.

So, a lot of temperature sensor of configuration and obtain heat flow or heat flux by computing according to its measured value on heating cylinder 11.

The present invention is not limited to above-mentioned concrete disclosed embodiment, can implement various variation and improvement example in not departing from the scope of the present invention.

The application quotes its full content in this application based on Japan's patent application of applying on May 31st, 2007 No. 2007-144405 and No. 2007-144406.

The present invention can be applicable to have the injection machine of display unit.

Claims (22)

1. the display unit of an injection machine is with the Stirring resin by screw rod and produce melting heat, and the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of is characterized in that,

Show accordingly near the inwall of the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder energy size with the axial location of described cylinder,

Described energy size is the estimated value of estimating according to the described temperature detection value of the work order value of described heater and described Temperature Detector.

2. the display unit of an injection machine is with the Stirring resin by screw rod and produce melting heat, and the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of is characterized in that,

Show accordingly near the inwall of the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder energy size with the axial location of described cylinder,

Described energy size is the estimated value that calculates according to the analogue value that is calculated by Temperature Setting condition and molding condition in advance.

3. the display unit of injection machine according to claim 1 and 2, is characterized in that,

Described energy size is by showing in the continuous lines along the expression numerical value of described cylinder axial position.

4. the display unit of injection machine according to claim 3, is characterized in that,

Described continuous lines corresponding to not in the same time or described cylinder diameter to diverse location carry out many demonstrations.

5. the display unit of injection machine according to claim 4, is characterized in that,

The section temperature that shows described cylinder distributes.

6. the display unit of injection machine according to claim 1 and 2, is characterized in that,

Described energy size is by showing at the arrow along the expression numerical value of described cylinder axial position.

7. the display unit of injection machine according to claim 1 and 2, is characterized in that,

Described energy size is by showing at the column diagram along the expression numerical value of described cylinder axial position.

8. the display unit of injection machine according to claim 1 and 2, is characterized in that,

Described energy size is as showing at the numerical value along described cylinder axial position.

9. the display unit of injection machine according to claim 1 and 2, is characterized in that,

Described energy size is at least one in temperature, heat flux, heat flow.

10. the display unit of according to claim 1 and 2 or 9 described injection machines, is characterized in that,

Show simultaneously along the desired temperature of described cylinder axial a plurality of positions and the curve map that represents near the energy size the inwall of described cylinder.

11. the display unit of according to claim 1 and 2 or 9 described injection machines is characterized in that,

Show simultaneously along the temperature detection value of described cylinder axial a plurality of positions and the curve map that represents near the energy size the inwall of described cylinder of these a plurality of positions,

Represent that the position of the energy size in described curve map is corresponding to described a plurality of positions of described cylinder.

12. the display unit of according to claim 1 and 2 or 9 described injection machines is characterized in that,

Rear end side at described cylinder arranges cooling cylinder,

Show simultaneously the temperature detection value of assigned position of this cooling cylinder and the curve map that represents near the energy size the inwall of described cylinder.

13. according to claim 1～12, the display unit of the described injection machine of any one, is characterized in that,

Described injection machine is the Preplasticizing type injection machine that possesses for the plunger of the resin that is injected at described cylinder melting.

14. the display unit of injection machine according to claim 13 is characterized in that,

Described cylinder is the cylinder of in-built described screw rod.

15. the display unit of injection machine according to claim 13 is characterized in that,

Described cylinder is the cylinder of in-built described plunger.

16. the display unit of an injection machine is with the Stirring resin by screw rod and produce melting heat, and the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of is characterized in that,

The energy size that is shown the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder by many continuous lines corresponding with the axial location of described cylinder,

Described energy size is the estimated value of estimating according to described temperature detection value and the heat flow of the work order value of described heater, described Temperature Detector.

17. the display unit of an injection machine is with the Stirring resin by screw rod and produce melting heat, and the display unit of the injection machine that the mode of this resin heat supply of the heater by being arranged at cylinder in this cylinder consists of is characterized in that,

The energy size that is shown the described cylinder that calculates according to the temperature detection value along the Temperature Detector of the axial arrangement of described cylinder by many continuous lines corresponding with the axial location of described cylinder,

Described energy size is the estimated value that calculates according to the analogue value that is calculated by Temperature Setting condition and molding condition in advance.

18. the display unit of according to claim 16 or 17 described injection machines is characterized in that,

Near the inwall of the described cylinder of the expression of at least one in described many continuous lines energy size.

19. according to claim 16～18, the display unit of the described injection machine of any one, is characterized in that,

Described energy size is temperature or heat flux.

20. according to claim 16～18, the display unit of the described injection machine of any one, is characterized in that,

The section temperature that shows described cylinder distributes.

21. according to claim 16～18, the display unit of the described injection machine of any one, is characterized in that,

Described injection machine is the Preplasticizing type injection machine that possesses for the plunger of the resin that is injected at described cylinder melting.

22. the display unit of injection machine according to claim 21 is characterized in that,

Described cylinder is the cylinder of in-built described screw rod.

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