JPS62286717A - Exchanging equipment for mold - Google Patents

Abstract

PURPOSE:To manufacture multiple kind and small lot products by performing an exchange of stampers in an extremely short period of time, by a method wherein a stamper block assembly is fitted to a rear cavity by a mold fitting equipment after the stamper block assembly has been conveyed by conveying equipment under a state wherein the same has been preheated in a preheating station. CONSTITUTION:A stamper block assembly 26 is obtained which has an integrally unified a stamper block provided with a stamper having a predetermined signal recorded, and is provided with a self-locking mechanism such as a coupler. The stamper block assembly 26 is conveyed on a conveyor 21 constituted of a preheating station 91 heating the stamper block assembly 26 to a predetermined operating temperature, and a delivery station 92 by a stamper block conveying equipment 90. The stamper block assembly 26 can be fitted to a rear cavity 50 in a short period of time automatically, without asking for a person's help, by fitting the same to a mold fitting equipment 22.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a mold for molding used when molding an information recording medium such as a compact disc by an injection molding device. The present invention relates to a molding die exchange device that facilitates the exchange of molds.

(Prior Art) In recent years, circular discs such as compact discs and video discs have been developed in which various information signals are recorded at high density using information recording media made based on various structural and operating principles. 2. Description of the Related Art It is well known that information recording media (hereinafter sometimes simply referred to as disks) and information recording medium playback devices for playing back the same are rapidly becoming popular.

This type of information recording medium uses a stamper that records an information signal by forming minute bits in a geometrically uneven shape on its signal recording surface in accordance with an optically modulated information signal. This stamper is attached to, for example, a mold of an injection molding machine, and a large number of copies are made. Particularly in the case of a compact disc (CD), the pits of the digitized signal are recorded only on one side of the disc.

The disk molded by the above injection molding is
After a N film is deposited on the bit by a thin film forming means such as sputtering on the signal recording surface, a completed information recording medium can be obtained by passing through a step of covering the N film with a protective film.

The disc manufactured through these various steps is placed on a turntable of a playback device, and is relatively scanned in the radial direction on the disc that is rotationally driven by an optical pickup means such as a He-Ne laser. Then, the previously described green signal is reproduced.

By the way, the mold used in the injection molding machine when molding the above-mentioned compact disc into a large size is generally divided into two parts: a fixed side mold and a movable side mold. The fixed side mold is provided with a fixed mirror surface on which no signals are recorded, and the other movable side mold is provided with a stamper on which information signals are recorded as minute bits as described above.

When molding a disk using both molds, the fixed mold and the movable mold to which the stamper is attached are heated to a certain temperature (for example, 90°) using a temperature control device.
C), a molding material such as polycarbonate that has been heated and melted to 300' C and liquefied using a heating cylinder is placed in a space corresponding to the shape of the disk formed by pressing the two together. By injecting the resin, a molded disk is obtained in which the high-temperature resin is solidified by coming into contact with the low-temperature mold. (Hereinafter, the disk in the injection-molded state will be referred to as a molded disk.) After that, the movable side mold is separated from the fixed side mold and the disk is taken out by the disk ejecting means, so that a single sheet on which a predetermined signal has been recorded is removed. Molded discs can be obtained.

Here, FIGS. 12 and 13 show conventional molds for molding discs in injection molding equipment for molding this kind of discs.
Schematic shown in figure! This will be explained using an I-section side view.

That is, the disk molding mold 1 has a two-part structure consisting of a fixed mold 2 and a movable mold 3 facing the same and equipped with a stamper recording a signal. Needless to say, heating and cooling means are respectively provided for controlling the temperature.

One of the stationary molds 2 has a mirror block 4 with a mirror-finished molding surface on its front face facing the movable mold 3, and a heating cylinder (not shown) for heating and melting the resin on its back side. A locate ring 5a to be inserted and held and a spool bushing part (gate part) 5b for injecting the molding material (resin) into the molds 2 and 3 are provided.

The other movable mold 3 includes a stamper block 10 that faces the mirror block 4 and mounts the stamper 6 on which signals are recorded as minute pits with uneven surfaces, and a glue retainer for centering the stamper 6 and holding the center part thereof. 7 and
A center punch 8 for punching the center hole of a molded disk formed in this retainer 7 and an ejector turbine 9 for ejecting a spool (runner) are arranged concentrically and l! ! ! They fit together freely.

As shown in the partially enlarged vertical cross-sectional view of FIG.
It is fixed to a retaining ring 11 fixed by a plurality of screws 14 via a ring-shaped mounting plate 13. Therefore, the stamper 6 is held at its center by the retainer 7, and its outer peripheral part is fixed by the mounting plate 13, so that it is fixed to the stamper block 10 in a securely positioned state.

In addition, 15.16 are grooves for both cooling water points formed therein to cool both molds 2.3, and 17.
is a wedge-shaped locking piece inserted from the outer peripheral surface of the movable mold 3 in order to lock the rear part of the retainer 7.

In this way, when molding a disk using the stamper 6 attached to the movable mold 3, the movable mold 3 is brought into contact with the fixed mold 2, and a stamper 6 is formed between the two molds 2. By injecting the above-mentioned heated and melted molding resin such as polycarbonate from a heated cylinder at a predetermined pressure into a space corresponding to the shape of the molded disc, it takes about 11 to 16 seconds per disc. A molded disk on which a predetermined signal is recorded can be obtained in a time of .

(Problems to be Solved by the Invention) By the way, the disk molding mold 1 configured as described above
When manufacturing discs by injection molding, the unit of molding of the discs varies depending on the type of software ordered, such as large lots of 2,000 to 4,000 discs and small lots of only 200 discs. It is.

Therefore, the stamper 6 fixed to the movable mold 3 as described above must be replaced each time with another desired stamper 6 on which a predetermined signal is recorded.

The main replacement work for the stamper 6 is performed manually by the following procedure after stopping the operation of the molding machine and lowering the temperature of the movable mold 3 to a predetermined temperature at which work can be performed. It will be done.

That is, (1) a plurality of screws 12 attaching the stamper 6;
14, and remove the mounting plate 11 and the mounting plate 13 from the stamper block 1o.

(2) Unlock the locking piece 17 that locks the retainer 7, and move the retainer 7 closer to the stationary mold 3.

(2) When attaching the stamper to the stamper block 10, remove the surface and peripheral portions respectively. At this time, attach the stamper carefully to avoid damaging the surface.

■Remove the surface of the stamper 6 to be attached and inspect both sides.

■The stamper 6 is attached to the mounting plate 13 by reversing step 1 of the above ■.
is attached to the stamper block 10.

■Re-insert the retainer 7 into the stamper block 10,
Fixation to the stationary mold 3 is performed using the locking piece 17.

■Reheat the movable mold 3 to the molding temperature (90°C ladle).

These replacement operations must be performed carefully, and the replacement cycle takes approximately 1 hour.
As mentioned above, this is the molding time per disc (approximately 1
1 second to 1 G seconds), and when the number of disks molded on the same molding line is small, the series of stamper replacement operations described above must be performed frequently each time. When molding different types of disks, there were drawbacks such as a significant drop in productivity.

(Means for solving the problems) The present invention has been made in view of the above-mentioned conventional drawbacks,
A stamper block assembly including a stamper block to which a stamper is attached, an engaging part with a locking function attached to the stamper block, a stationary mold having an injection part for injecting a molding material, and the stamper block assembly. A molding die comprising a movable movable die disposed opposite to the stationary die and having engagement means capable of engaging with a three-dimensional engagement portion, and the stamper block assembly are assembled in a predetermined position. a samurai station having at least a heating means for preheating to a temperature of mold mounting means, which is provided with a lock release means for releasing the lock, and has an engagement means that engages with the engagement portion, and is arranged to move forward and backward between the fixed side mold and the movable side mold; , a second conveying means that operates to attach the stamper block assembly conveyed by the first conveying means to a shipping mold attaching means; It is something to do.

(Example) FIG. 1 is a schematic plan view of a disk mold, a mold mounting device, and an accompanying disk ejecting device, showing a preferred embodiment of the mold changing device according to the present invention. , second
The figure is a side view of the conveyor device for conveying the stamper block assembly and the mold mounting device as seen from the inside direction in Figure 1, and Figure 3 is a side view of the device with the number of molds N seen from the 8 direction in Figure 1. ,
FIG. 4 is a side view of the molded disk ejecting device seen from direction C in FIG. The cover and stanbar installation are shown in a half plan view on the mirror surface side, FIG. FIG. 7 is a longitudinal sectional side view of the disk molding die, showing a state in which the stamper block assembly shown in FIG. 5 is attached to the die.

As shown in FIG. 1, a molding die changing device 20 according to the present invention includes a conveyor \it1!21 for preheating and conveying a stamper block assembly (to be described later), and a conveyor 21 for preheating and conveying a stamper block assembly to a disk molding die. Its main mechanism is composed of a mold mounting device 22 for transporting and mounting the disc, and a disc molding mold 23 for molding the disc, and the molded disc is taken out by a molded disc take-out device @ 24 and transported to the disc. It is conveyed by a conveyor device 25.

Here, before sequentially explaining the specific configuration and operation of each of the above-mentioned 5A locations, in order to facilitate understanding of the configuration of the present invention, a stamper block to which a stamper constituting a part of the main part of the present invention is attached will be explained. The specific configuration of the assembly 26 is shown in FIG.
) (B) will be used to explain in detail.

That is, as shown in the figure, the stamper block assembly 26 is
A mirror surface M is formed on one side where the stamper is attached, and a cylindrical retainer 27 that clamps the outer edge of the center hole of the stamper is inserted from the center of the mirror surface M side, and the machine part is fixed by tightening with an annular screw 28. A plurality of screws 30 are attached to the outer peripheral flange portion 29a of the stamper block 29.
An annular retaining ring to which the base 31a is fixed by /;! 3
1, and four couplers (engaging portions) 3 that are attached to the outer periphery of the holding ring 31 on the mirror surface M side of the stamper block 29 in approximately equal parts (four locations in the embodiment) and equipped with a locking mechanism.
2, and a movable annular slide plate 38 surrounding the base 31a of the retaining ring 31 to control the locking and unlocking operations of the locking mechanism provided on the coupler 32.
This roughly consists of its main parts.

The specific structure of the coupler 32 will be explained in conjunction with a partially enlarged vertical sectional side view shown in FIG. The main body is composed of an inner sleeve 33 which is a fixed part formed in an oval shape, and an outer sleeve 34 which is fitted onto the cylindrical part 33a of the inner sleeve 33. The inner sleeve 33 has a plurality of tapered holes 33C formed at approximately equal intervals on the outer periphery of the cylindrical portion 33a.
5 is internally installed so that a part thereof protrudes from the inner circumferential surface, and can freely move forward and backward in the vertical direction. This installation is carried out using screws 37 via a retaining ring 36 so that the flange portion 33b is allowed to move slightly in the radial direction with respect to the retaining ring 31.
Installed by. On the other hand, the outer sleeve 34 is formed with an L base-shaped groove 340 of a predetermined length that allows vertical movement of the plurality of steel balls 35, and a flange portion 3.4b and a retaining ring 60 formed on the outer periphery thereof. The slide plate 38 is locked by this. Although a plurality of coil springs 46 as shown in FIG. 5 are stretched between both retaining rings 31 and the slide plate 38 to forcibly separate them, the inner sleeve 33 The end of the annular groove 34a is locked by the fitted retaining ring 39, and the movement position of the outer sleeve 34 relative to the inner sleeve 33 is restricted.

In FIG. 5, reference numeral 40 denotes a plurality of bottles embedded in the retaining ring 31, which guide the slide plate 38.

Reference numeral 41 denotes a mounting plate for mounting the stamper 6 as shown in FIG. Since it is fixed with screws 42, the explanation will be omitted here.

Reference numeral 43 denotes a stamper block cover that covers the side surface of the stamper block assembly 26 on the mirror surface M side, and a lock bin 4 that fits into the inner sleeve 33 of the coupler 32 is provided on the lower side of the stamper block cover.
The back part is fixed with screws 45 in a state where 4 protrudes. This lock bin 44 has an inner sleeve 3.
An annular groove 44a that can be engaged with the steel balls 35 of No. 3 is formed respectively. Further, a cylindrical support part 47 protrudes from the center of the other side of the stamper block cover 43 and fits into a holding cylinder 119 (described later) of the mold mounting position 22, and is fixed from the bottom with screws 48. ing.

Further, the stamper block cover 43 has a plurality of (four) through holes 43a for allowing the operation rod of the lock release cylinder 116 (described later) of the mold mounting device 22 to enter therein.
A pair of elongated holes 43b are formed opposite each other, and the lock release cylinder 116 releases the locking mechanism of the coupler 32 by pressing the slide plate 38 of the stamper block assembly 26 through the through holes 43a. The pair of elongated holes 43b engage with a guide bin 100 of a device to be described later for conveying the stamper block assembly 26 of the conveyor device 21 described above.

Further, 56 is a guide hole bored in the stamper block cover 43 and the stamper block 29, and this is a guide hole (denoted by the reference numeral 59 in FIG. The stamper block assembly 26 is positioned with respect to the movable mold 50 based on the guide base (not shown).

This stamper block assembly 26 includes a movable mold 50 of the disk molding mold 23 which is composed of a fixed mold 49 and a movable mold 50 shown in FIGS. 1 and 7.
A heating mechanism (not shown) and grooves 49a and 50a for circulating cooling water are formed in both molds, respectively.

Here, the specific structure of the disk molding die 23 will be explained using FIG. 7.

The fixed side mold 49 has, on the negative side, a locate ring 5215 into which a heating cylinder 51 for heating and melting the resin is fitted and held, and a spool bushing part (for injecting the molding material (resin)) on the negative side. A sprue 53 and the like are provided, and a fixed block 54 having a mirror surface is fixed to the other side facing the movable mold 50. On the other hand, four actuating connecting rods 55 integrally formed with a piston 57 for fixing the stamper block assembly 26 are fitted into the movable mold 50 so as to be movable forward and backward so as to face the center of each coupler 32. Xl by controlling the oil pressure supplied to the cylinder 58.

Move forward and backward in the X2 direction. Then, the stamper block assembly 26 is inserted into the stationary side mold 50 with its guide hole 56 being guided by a guide bin 59 (shown in FIG. 9(B)) formed protruding from the front surface of the stationary side mold 50. When the operating connecting rod 55 protruding from the front enters the inner sleeve 33 of the coupler 32, the annular groove 55a formed at the tip thereof and the steel ball 35 fit together, locking the stamper block assembly 26. There is.

Reference numeral 61 designates a center punch that is inserted into the retainer 27 of the stamper block assembly 26 and is used to punch the center hole of the molding disk.
An ejector turbine 62 for ejecting the
slide in each direction.

Here, in the molding state shown in FIG. 7 in which the movable mold 50 moves to the fixed mold 49 side and joins, the heating cylinder 5
When molded resin is injected from 1 through the spool bushing part (gate part) 53, the molded resin is injected into a space 63 corresponding to the shape of the molded disk formed between both molds 49 and 50. By doing so, a molded disk having a predetermined shape can be obtained. Thereafter, the center punch 61 and the ejector pin 62 operate to form a center hole in the molding disk, and then, when the movable mold 50 is separated from the fixed mold 49 in the X2 direction, as shown in FIG. The illustrated disk ejector 24 operates to convey the formed disk to a predetermined position.

Here, the configuration and operation of the disc ejecting device 24 will be explained again with reference to FIGS. 1 and 4.

That is, the disk ejecting device 24 reciprocates in the Y+ and Y2 directions on a connecting bridge 64 connected to the stationary mold 49 by a pair of running cylinders whose operating rods are joined to each other. is fixed on the rectangular casing 67 of the moving disk ejecting device 24, and functions to move it in the Y1 direction, and advances it to the position shown by the two-dot chain line in FIG. A traveling cylinder 66 is fixed to the connecting bridge 64 and serves to advance the disk ejector 24 further between the molds 49,50. The housing 67 travels while being guided by a pair of rails 64a formed on the sides of the connecting bridge 64 by guide rollers 68 attached to both sides.

A pair of stoppers 69 and 70 for regulating the forward position and the backward position are fixed to both ends of the connecting bridge 64, and the housing 67 of the disk ejecting device 24 runs on the connecting bridge 64 along the rail 64a. , these two stoppers 69
．． A pair of front and rear stoppers 71 and 72 are respectively fixed opposite to the stopper 70.

Reference numeral 73 denotes a rectangular arm support that is integrally formed with the c-body 67 so as to hang down thereon, and on the upper part of the arm support there is erected a reeding cylinder 74 for lowering and lowering the molded disk D. At the bottom is an operating rod 74a of the lifting cylinder 74.
An arm shaft vJ\Aff175 connected to is attached.

76 is installed inside the arm support 73, and the arm drive! 7J is a disk ejecting cylinder that moves the device 75 to the disk ejecting position, and when a molded disk is taken out, after a disk suction member 86 (described later) of the disk ejecting arm 79 has been moved to a position facing the molded disk by the traveling cylinder 66. , the disc suction member 86 is moved to and brought into contact with the molded disc. .

Further, reference numeral 77 is a screw for adjusting the position of the arm driving device 75 provided on the arm support cylinder 73, and by adjusting this screw, the longitudinal position of the disc ejecting arm 79 can be adjusted.

The support casing 78 of the arm drive device 75 has a shaft 84 supporting a bevel tooth width 82 that meshes with a bevel gear 81 fixed to a support frame 80 integrated with the disk ejecting arm 79, and an arm rotation cylinder 83. is in contact with the support frame 80. Therefore, by operating this arm rotation cylinder 83, the disk ejecting arm 79 is moved to the bevel gear 8.
2.81, the disk ejecting arm 79 in the state shown by the solid line in FIG. Since the molded disk D is rotated by .degree., the molded disk D gripped by the disk take-out arm 79 is positioned on the disk mounting table 85. Note that 86 is a disk suction member operated by a suction device (not shown), and 87 is a solenoid that clamps the spool S, and these are each provided at the tip of the disk take-out arm 79.

Here, the operation for taking out the molded disk molded by the disk molding die 23 will be explained in general.

As shown in FIG. 7, when the movable mold 50 to which the stamper block assembly 26 is fixed is brought into contact with the four fixed molds,
Heating cylinder 51 and spool bushing part (gate part)
When the molding resin is injected into the space 63 of both molds via the molding resin 53, the center punch 61 and the ejector bin 62 operate in sequence to form a center hole in the molding disk, as described above. When the movable mold 50 separates from the stationary mold 49 in the x2 direction, the traveling cylinder 65 moves the disk ejecting arm 79, which was configured at the position indicated by the two-dot chain line in FIG. 1, to the disk ejecting cylinder 66. After further advancing into both molds 49°50 by
The disk suction member 86 moves forward in the x2 direction by the forward cylinder 67, and the disk suction member 86 and the solenoid 8
7, take out the molded disk D and the spool S, respectively. Thereafter, when the backward traveling cylinders 66 and 65 operate together to retract the disk ejecting device 24 to the position shown by the solid line, the arm rotation cylinder 83 operates at the same timing to move the seven disk ejecting arms to the first position. As shown in FIG. 7, the molded disk D is placed on the disk mounting table 85 of the conveyor device 25 for conveying the disk by rotating it approximately 90' in the horizontal direction and in the axial direction.

Thereafter, the disk take-out arm 79 returns to the predetermined position and the solenoid 87 operates to drop the spool S. In this way, when the formed disks D reach a predetermined number on the disk mounting table 25, the sensor 88 shown in FIG. Move the mounting table 85 from the predetermined position in the direction of the arrow Jt! 1. ．． Then, move the new disk II stand 85 to the disk drop position of the disk eject arm 79.

Here, based on FIG. 1 again, FIG. 2 and FIG. This will be explained using them together.

That is, the conveyor S@21 that preheats and conveys the stamper block assemblies 26 is connected to a conveyor 89 that conveys a plurality of stamper block assemblies 26, and these eight conveyors, as shown in FIGS. 1 and 2. , a first transporting the stamper block assembly 26 to a predetermined station.
A special station consisting of a stamper block conveying device 90 serving as a conveying means for the stamper block assembly 26, and a delivery station 92 having a preheating station 91 for preheating the stamper block assembly 26 and serving as a second conveying means for introducing and removing the stamper block assembly 26. 103.

The conveyor 89 is comprised of a pair of roller conveyors, an outgoing conveyor 89a that introduces the stamper block assembly 26 to the preheating station 91, and a return conveyor 89b that takes out and conveys the stamper block assembly 26 after the molding operation has been completed.

The stamper block assembly 26 sent by the outward conveyor 89a is heated by a heating mechanism (not shown) by a stamper block conveying device 90 that moves on a guide rail 95a of a support housing 95 having legs 94 fixed on a body 93. The sample is transported to a preheating station 91 equipped with a preheating station 91.

That is, as shown in FIG. 8, this stamper block conveyor 8 holder 90 is integrally connected to an elevating cylinder 97 that is attached downward to a base portion 96 that moves on a guide rail 95a. The support plate 98 has a support cylinder 99 and a guide pin 100 hanging down at the bottom thereof, which correspond to the support part 47 and the pair of elongated holes 43b of the stamper block assembly 26 on the preheating station 91 as shown in FIG. 5, respectively. It is something to do.

In FIG. 1, 101 is a moving cylinder attached to the support casing 95, and this is the standby block conveying device 90.
is moved to a preheating station 91 and a delivery station 92, which will be described later. Further, 102 is a position detection cylinder for detecting the retracted position 11 of the standby block conveying device 90.

As shown in FIG. 2, the delivery station 92 connected to the preheating station 91 is connected to the body 10 of the mold mounting device 22 by means of a rotating cylinder 104 attached to its lower part.
f (11107) of the arm 106 attached to 5 in the counterclockwise direction in the figure.

Here, the specific configuration of the mold number N device 22 connected to the standby station 103 will be described with reference to FIGS. 1 to 3.

That is, the mold mounting device 22 moves on the guide rail 108 provided on the machine body 105 so that the arm head portion 113 provided at the tip of the arm body 112 enters between the two molds 49 and 50 by the cylinder 109. Y2. Y+ force direction reciprocating movement, forward position and 1 by sensor 110°111
12 Retirement stomachs are each regulated. This arm body 11
2 moves to the retracted position shown by the solid line in FIG.

On the 8 movement plate 114 on the 1iG surface side of the arm head portion 113, there is a pair of upper and lower cylinders 115 for forward and backward movement that operate from the back side.
Four lock release cylinders 116 are attached to press the slide temporary 38 of the stamper block assembly 26 as shown in FIG. 5(B). 117 is 8 imperial tablets 11
4, and 118 is a sensor cylinder for detecting the return position of the movable plate 114. Then, the stand bar block assembly 26 of this moving plate 114
A cylindrical holding cylinder 119 for holding the support part 717 of the standby block cover 43 as shown in FIG. An intake hole 120 is provided.

Here, the specific operation of the molding die changing device according to the present invention configured as described above will be described in the first part with reference to each figure.
The operation of the coupler 32 will be explained in sequence with reference to an explanatory diagram J3 of the coupler 32 shown in FIG. 0 and a timing chart shown in FIG. Note that since the start and end of each operation are operated by a sensor (not shown), the transmission and reception of signals will be omitted here.

When the molding of the disk is completed by the stamper 6 to which a predetermined signal has been generated, the movable mold 50 to which the stamper block assembly 26 is attached is moved from the fixed mold 49 by an operation source (not shown) as shown in FIG. It separates in the X2 direction.

Therefore, the support portion 43a of the stamper block cover 43
The intake device of the arm head portion 113 which is held in the holding state by the holding cylinder 119 operates (FIG. 11(A)) L.
After the stamper block cover 43 shown in FIG. 5 is securely held on the arm head portion 113 by the suction force from the intake hole 120 and the holding cylinder 119, the stamper block cover 43 shown in FIG.
As shown in FIG. 10(B), the operating connecting rod 55, which is in a locked state with the steel ball 35 of the coupler 32 as shown in FIG. (FIG. 11(B)), the operating connecting rod 55 moves forward a little, and the coupler 32 and the operating connecting rod 55, which had been in a locked state until then, become relaxed. At this time, a slight gap is created between the stamper block 29 (retaining ring 31) and the movable mold 50.

Then, the arm main body 112 provided with the stamper block cover 43 is moved from the retreat position shown by the solid line to the exchange position shown by the two-dot chain line by the operation of the traveling cylinder 109 shown in FIG. 1 (FIG. 11(C)). So, arm head 113
The sensor 110 detects the position where the stamper pro holder assembly 26 is opposed, and the traveling cylinder 109 is stopped.

Next, the advancing cylinder 115 of the arm head section 113 operates (FIG. 11(D)), so that the arm head section 113 moves in the direction of the movable mold 50 (X2 direction) and covers the stamper block. 43 lock bins 44
and the operating connecting rod 55 of the movable mold 50, which has already entered each coupler 32 of the stamper block assembly 26, come into contact with each other as shown in FIG. 10(C).

Then, the lock release cylinder 116 of the arm head portion 113 operates (FIG. 11(E)) and moves the slide plate 38 through the through hole 43 of the stamper block cover 43 against the elastic force of the coil spring 46. 10(D). Therefore, when the slide plate 38 is in the depressed state, the structure of the coupler 32 as described above causes the outer sleeve 34 to move to the right in the figure and engage the steel ball 35. Since the annular groove 34a is in a corresponding relationship, the steel ball 35 can be vertically displaced within the coupler 31, and the operation connecting rod 5
5 and coupler 32 are completely unlocked.

Then, in this state, the arm head part 113 (stamper
As the block cover 43) moves forward, hydraulic pressure is supplied to the chamber 58a of the cylinder 58, causing the operating connecting rod 55 to move backward, so that the stamper block cover, which had been in the forward state, is moved back, as shown in FIG. 10(E). 43 moves forward, and its locking pin 44 locks into the inner sleeve 33 of the coupler 32.
go inside. And the annular groove 44 of this lock bin 44
When a and the steel ball 35 are in a corresponding relationship as shown in FIG. When the stamper block cover 43 and the stamper block assembly 26 are returned to the position δ and the stamper block assembly 26 is connected, the forward movement cylinder 115 is operated to return to the 10th position.
As shown in Figure (G), the stamper block assembly 26 integrally joined to the stamper block cover 43 moves to the arm head portion 113 side. At this time, the sensor cylinder 118 detects the correct return position of the stamper block assembly 26. In addition, this sensor cylinder 118
When the stamper block assembly 26 is attached, which will be described later, it is also detected that the stamper block cover 43 has returned correctly to the arm head portion 113.

Thereafter, the traveling cylinder 109 returns and the arm body 112 returns to the initial position by 1 to 2 seconds, which is detected by the sensor 111, and the signal causes the rotation cylinder 104 shown in FIG. 11(F)) L, the delivery station 92 is rotated approximately 90 degrees counterclockwise about the shaft 107 as shown by the chain double-dashed line in FIG. Thereafter, the forward movement cylinder 115 operates to move the arm head portion 113 forward (the intake device is shut off before this forward movement), and the solenoid 121 of the delivery station 92 operates (FIG. 11(G)). a stamper block assembly 26 equipped with a stamper block cover 43;
is clamped, and at the same timing, the forward movement cylinder 115 returns and the arm head portion 113 retreats. Thereafter, the rotation cylinder 104 returns to the delivery station.

92 is rotated back as shown by the solid line in FIG.

Next, the moving cylinder 101 operates to transport the stamper block assembly 26 (FIG. 11(H)) of the transfer station 92, causing the stamper block transporting device 90 to travel in the X+ force direction and hit the stopper 122. By bringing them into contact, the position detection cylinder 102 detects the position.

As a result, the lifting cylinder 97 of the stamper block conveying device 90 moves downward (FIG. 11(I)), and the supporting plate 9
8 and the guide bin 100 are lowered from the state shown in FIG. 8(A) to the state shown in FIG. 8(B). After fitting into the pair of elongated holes 43b, the solenoid 121 is released, and the solenoid 121 is moved in parallel to the return station 123 between the delivery station 92 and the preheating station 91 (FIG. 11 (J)) in its lowered state. Thereafter, the lifting cylinder 97 returns to its upward movement, and the stamper block conveying device 90 waits above the stamper block assembly 26 on the outgoing conveyor 89a. In the return process of the stamper block conveying device 90, the return station 123
The upper stamper block assembly 26 is moved by the cylinder 124 for the slider to the returning return conveyor 89b (FIG. 11(K)), and then moved by the cylinder 125. and remove it to the specified position.

The installation and operation of the stamper block assembly 26 will now be described.

Move onto the outgoing conveyor 89a (Fig. 11 (L)) t
, when the stamper block conveyor @90 detects the presence of the stamper block assembly 26 on the preheating station 91 by a sensor (not shown), the moving cylinder 1.01
When the slider cylinder 124 is moved, the slider cylinder 124 returns to its original position at the same timing. After that, the moving cylinder 101
The stamper block conveying device 90 is moved onto the preheating station 91 (FIG. 11(M)) by the operation shown in FIG.
), and the lower support plate 98 is lowered in the same way as above.
Support cylinder 99 and guide bin 1 integrally attached to
00 locks the stamper block cover 43 of the stamper block assembly 26 and moves it to the delivery station 121 via the return station 123 (FIG. 11(H)). After moving to this delivery station 92 and clamping the stamper block assembly 26 by the solenoid 121, the rotation cylinder 104 is operated (FIG. 11 (F)
)), the advancing cylinder 115 of the arm head 113 operates again, and the movable plate 114 moves forward (Fig. 11(B)).
), and the intake device operates (FIG. 11(A)) 1.
, attach the stamper block assembly 26 to the arm head section 11.
The forward cylinder 115 held at 3 is returned to its original state. Then, while the stamper block assembly 26 is held by the arm head section 113, the arm head section 113 provided at the tip of the arm body 112 runs in the Y2 direction on the guide rail 108 again by the operation of the traveling cylinder 109. The advancing cylinder 115 enters between the two molds 49 and 50 which are in a separated state (this state is shown in FIG. 9(A)).
The arm head portion 113 moves forward in the direction of the movable mold 50, and the slide plate 38 is pressed by the operation of the lock release cylinder 116, so that the coupler 32 is unlocked as shown in FIG. 9(B).

Thereafter, transfer is performed between the arm head portion 113 of the stubber block assembly 26 and the movable mold 50 using the coupler 32 as the center, the lock pin 44 of the stanbar block cover 43, and the operating connecting rod 55. . The above series of operations is automatically performed in only about 14 seconds by a central control device (not shown), which is roughly equivalent to the time it takes to manufacture one molding disk, and the standby time required for conventional molding molds. Compared to the 1 hour it took to replace the parts 6 and 6, the work was much shorter. Furthermore, it goes without saying that the apparatus of the present invention can be manually controlled as necessary.

The stamper block 29 with the stamper 6 on which the predetermined signal is recorded is integrated into a unit, and a stamper block assembly 26 equipped with a self-locking mechanism such as a coupler 32 is used to assemble the stamper block. A standby block conveying device 9° conveys the solid body 26 on a conveyor device 21 consisting of a preheating station 91 that heats it to a predetermined working temperature, a delivery station 92, etc., and attaches it to the mold attaching device 22. The attachment to the movable mold 50 is automatically achieved in a short time without any manual intervention.

(Effects of the Invention) Since the molding die changing device of the present invention is configured as described above, the stamper block assembly is pre-attached to the stamper block, and the stamper block assembly equipped with the locking mechanism is preheated at the preheating station. After being transported by the standby block transporting device which becomes the first transporting means, it is attached to the movable mold by the number of molds (6 devices) which becomes the second transporting means, so when replacing the standby as in the past This standby can be replaced in an extremely short time without having to perform complicated and time-consuming work such as mold cooling and heating, making it inexpensive for manufacturing a wide variety of products in small lots!I It has excellent features such as being able to be easily constructed.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a disk mold, a mold mounting device, and an accompanying disk ejecting device showing a preferred embodiment of the mold changing device according to the present invention;
The figure is a side view of the conveyor device for conveying the stamper block assembly and the mold mounting device as seen from direction C in FIG. 1, and FIG. 3 is a side view of the mold mounting device as seen from direction C in FIG.
FIG. 4 is a side view of the molded disk ejecting device seen from direction C in FIG. The cover and stanbar installation showing the state are shown in a half plan view on the mirror surface side, the same figure (B) is a longitudinal cross-sectional side view taken along line a-a in Fig. I81 (A), and Fig. 6 is an enlarged longitudinal cross-sectional side view of the coupler. FIG. 7 is a longitudinal sectional side view of a disk molding die showing a state in which the stamper block assembly shown in FIG. 5 is attached to the die, FIGS. FIGS. 9(A) and 9(B) are partially longitudinal side views showing the state in which the stamper block assembly is attached to the movable mold;
0 (A) to (G) are explanatory diagrams for explaining the operation of the coupler, FIG. 11 is a timing chart diagram, FIG. 12 is a schematic vertical sectional side view showing the configuration of a conventional molding die, and FIG.
The figure is a partially enlarged sectional view showing the fixing part of the stand bar. 6... Stand bar, 23... Molding mold, 26...
Stamper block assembly, 29... Stamper block, 32... Coupler, 43... Stamper block cover, 44... Lock pin, 49... Fixed side mold, 5
0...Movable side mold, 55...Operation/motion connecting rod, 90.
... Standby block transport device, 91 ... Preheating station, 92 ... Delivery station, 103 ... Standby station, 116 ... Lock release cylinder. 61st! l Fig. 8 Y1'It No. 70

Claims (1)

[Claims] A stamper block assembly including a stamper block to which a stamper is attached, an engaging part with a locking function attached to the stamper block, and a fixed side metal plate including an injection part for injecting a molding material. a molding die comprising a mold and a movable movable die disposed opposite to the stationary die and having engagement means capable of engaging with the engagement portion of the stamper block assembly; a standby station having at least heating means for preheating the stamper block assembly to a predetermined temperature; a first conveyance means for conveying the stamper block assembly provided at the standby station; and a first conveyance means for conveying the stamper block assembly; The mold is provided with a lock release means for releasing the locking mechanism of the joint part, and an engaging means for engaging with the engaging part, and is arranged to be movable back and forth between the fixed side mold and the movable side mold. A molding die comprising: a mold attachment means; and a second conveyance means operable to attach the stamper block assembly conveyed by the first conveyance means to the mold attachment means. Exchange device.