TW201932370A - Method for controlling thickness of bag body of bag blaster properly and the device of the same - Google Patents

Abstract

The invention provides method for controlling thickness of bag body of bag blaster properly and the device of the same, which provides wind power auxiliary unit at chilling air ring located above die head of the forming bag body of the bag blaster. The wind power auxiliary unit correspondingly distributes air and controls the thickness of the film via blowing of wind current and further provides one or more than one temperature detector on the wind power auxiliary unit, the temperature detector can correspondingly detect temperature of every air outlet of the wind power auxiliary unit, senses temperature by applying the temperature of molding compound of every air outlet located on the bag body and further estimates the thickness of the molding compound via obtaining numerous temperature data and is able to be informed of difference of the thickness of the molding compound according to the analysis of thickness so that the exhaust of the air outlet can be adjusted automatically. Accordingly, the thickness of the molding compound of the bag body can be consistent via retrieving more temperature data from the molding compound for analysis and adjusting the exhaust of the air outlet automatically and further achieving the efficiency of improving the yield rate of the bag blaster products.

Description

Blowing bag machine body thickness equalization control method and device thereof

The invention relates to a method for controlling the thickness balance of a bag body of a bag blowing machine and a device thereof, in particular to a control method and device technology for controlling the thickness of the bag body blown out by the bag blowing machine to be the same.

Press, the bag blowing machine is a machine for manufacturing plastic bags. Generally, the plastic bags are blown and blown, and are made by a bag blowing machine. The composition of the bag blowing machine includes an extruder, a die, a picker and a coiler. The blow bag manufacturing is to put the plastic raw material into the pressurizing and hot-dissolving part of the extruding machine, and then the plastic material which is melted into liquid form by the die of the extruding machine is led upward, and can be guided by the die ( The wind ring provided above the heart) cools it to form a film, which is then pulled up by the bowing machine provided above the frame, so that the liquid plastic material can be continuously condensed and formed into a plastic film tube, and then through the roller group. Guided, but can be reeled by the coiler.

However, it can be found from the manufacture of blown bags in the past that when the plastic material is pushed out from the die (heart), it is often caused by uneven processing accuracy of the parts, or it is difficult to correct after installation, etc., resulting in uneven discharge. When the material extruded from the die (heart) is uneven, a region of uneven film thickness appears on the blow bag, and it is understood that the die device of the bag blower will affect the manufacture of a bag blower. The quality of the plastic bag, especially the stability of the plastic output by the die-center device, controls the thickness of the plastic bag formed by the bag blowing machine.

Therefore, in the industry, there are research and development such as Taiwan Patent Publication No. 571919 "Adjustment Mechanism for Blowing Bags for Evenly Winding Blowing Bags", Announcement No. M513113 "Molding Device for Blowing Machines", or Announcement No. M419672 "Multi-layer bag blowing machine die structure with adjustable plastic flow" includes: a die: two plastic flow channels are arranged at intervals, and the die is provided with two injection ports respectively communicating with the plastic flow channels; a first manifold and a second manifold are respectively connected to one end, and the first manifold and the second manifold are respectively connected to the injection ports, and the first manifold and the second manifold are respectively provided There is a flow control valve.

However, the key to the thickness of the plastic bag is mainly to adjust the gap between the die-forming module of the blow molding machine and the die cover and the die sleeve, which affects the thickness of the plastic bag, and therefore must be narrow and narrow for the gap. Adjusting instead of inking the design of the mold flow channel; generally, a plurality of screw holes are arranged in the radial direction in the lower part of the die cover of the bag blowing machine, and each screw hole is respectively provided with a screw, and the screw is oriented toward the bag blowing machine When the axial end of the die cap is applied, the end surface of the first end of the screw is movable against the die sleeve, thereby adjusting the gap between the die forming module of the bag blowing machine and the die sleeve of the bag blowing machine, but Since the method of adjusting the gap is adjusted before the start-up, but the gap size and the flow rate are uneven due to some factors in the blowing process, the defect rate is increased, so the plastic bag is visually inspected. When the thickness is different, it is necessary to stop the adjustment again, resulting in unstable quality and complicated adjustment of the production process.

Today, the inventor has long been rich in design and development and practical production experience of the relevant industry, and provides a method and device for controlling the thickness of the bag body of the bagging machine, in order to achieve better practical value.

The main object of the present invention is to provide a method and device for controlling the thickness of the bag body of the bag blowing machine, in particular to a control method and device technology for controlling the thickness of the bag blown by the bag blowing machine to be equalized.

The main purpose and function of the method for controlling the thickness of the bag body of the bag blowing machine of the present invention are achieved by one of the following specific technical means:

The wind assisting unit is disposed at a cooling air ring above the die of the bag forming body of the bag blowing machine, and the wind assisting unit can control the film thickness corresponding to the air blowing and the wind flow, and then set on the wind assisting unit. There is one or more temperature detectors, and the temperature detector can perform temperature detection corresponding to each air outlet of the wind power auxiliary unit, and then use the temperature of the film at each air outlet on the temperature sensing bag body to assemble A large number of temperature data is used to judge the thickness of the film, and according to the thickness analysis, the abnormal spot of the film thickness can be known, so that the air volume of the air outlet of the abnormal spot can be automatically adjusted; thereby, the temperature of the multi-point film is analyzed. Evaluate and automatically adjust the air volume to make the thickness of the bag film uniform, which can improve the yield of the blow bag product.

The main purpose and efficacy of the method for controlling the thickness of the bag body of the bag blowing machine of the present invention are achieved by the following two specific technical means:

The utility model is mainly provided with a cooling air ring for blowing air above the die of the bag forming body of the bag blowing machine, and blowing the cooling film material by the air flow, and one or more temperature detectors are arranged on the path for cooling the film material. And the temperature detector can perform fixed-point temperature detection corresponding to the die discharge point, and use the temperature of the film material at a certain point on the temperature sensing bag body, and then collect a plurality of temperature data to determine the film material thickness, and according to the thickness analysis. The difference of the thickness of the film material can be known, so that the discharge gap of the abnormal sample can be automatically adjusted; thereby, the multi-point film temperature is taken for analysis and evaluation, and the discharge amount is automatically adjusted to make the thickness of the bag film uniform. To achieve the effect of improving the yield of blown bag products.

A preferred embodiment of the method for controlling the thickness of the bag body of the bag blowing machine of the present invention, wherein when the temperature detector is disposed, the temperature detector is coupled to a driving device, and the driving device is configured to drive the temperature detector Correspondingly, the film material is rotated in a circular orbit to detect the temperature of the film at a fixed point; further, the temperature detector is disposed on an indexing plate, and the driving device is disposed on the indexing plate, and is configured to drive the temperature detector The indexing disk rotates in a circular orbit.

A preferred embodiment of the bag thickness balancing control method of the bag blowing machine of the present invention, wherein the temperature detector corresponds to the sensing film temperature, and the incident point is inclined at an angle X with respect to the film material to detect the film. The temperature of the annular region is constant at a certain point, and the inclination angle X is in a range that does not penetrate the corresponding film at the incident point.

A preferred embodiment of the method for controlling the thickness of the bag body of the bag blowing machine of the present invention, further comprising a control analyzing unit, wherein the control analyzing unit respectively connects the temperature detector and the wind assisting unit (or the a control unit, which receives a plurality of film fixed point temperature data sensed by the temperature detector, and integrates the fixed point temperature data to obtain a film thickness and a different point thereof, and the control analysis unit can According to the analysis of the abnormal point, the adjustment control corresponds to the amount of the wind (material) at the same point.

A preferred embodiment of the bag thickness balancing control method of the bag blowing machine of the present invention and the device thereof, wherein the temperature detector is one of an infrared sensor and a thermal imager.

For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects thereof achieved by the present invention, it is explained in detail below, and please refer to the drawings and drawings:

First, in order to achieve the method for controlling the film thickness in the present invention, there are two methods, and the two methods can respectively achieve different functions corresponding to different devices, which are described below.

Please refer to the first to fourth figures, which are the first method for controlling the thickness of the bag body of the bag blowing machine of the present invention, which is mainly used for forming the bag body through the die, and initially cooling the film material by air supply, and the film material is not completely completed. When cooling, a multi-point blown film is applied, and the film thickness is controlled by the air blown film, and at the same time, the multi-point temperature detection is performed on the film material after the blown film, and the incident point of the temperature detection is inclined at an angle X with respect to the film material. In order to detect the fixed temperature of each blown film in the annular region of the film, the temperature data of each certain point is collected and analyzed, and the thickness of the film is determined by temperature, and then the abnormal spot of the film thickness is known and adjusted by control. Corresponding to the amount of blown air at the different points to control the thickness of the film.

The main body of the bag blowing machine (1) is provided with a die (11) corresponding to the forming bag body, and a cooling air ring (12) is arranged around the periphery of the die (11), via the cooling air ring (12). The air is supplied to the bag material (2) for cooling, wherein the film material (2) of the bag blowing machine (1) is correspondingly monitored for thickness of the film material (2) via the device, and the device comprises:

a wind power assisting unit (3) is disposed above the cooling air ring (12), and the wind assisting unit (3) is provided with a plurality of air outlets (31), and the air outlets (31) correspond to the film material Supply air, and use the wind to blow the Buddha to control the film material (2) thickness;

A temperature detecting module (4) is composed of a temperature detector (41) or a plurality of temperature detectors (41), and is correspondingly disposed on the path of the blown film of the wind assisting unit (3) and used for detecting Membrane (2) temperature, and the temperature detector (41) detects the film temperature at a fixed point corresponding to each air outlet (31) of the wind power auxiliary unit (3), and the temperature detecting module (4) Corresponding to the sensing film material (2) temperature detection incident point is inclined at an angle X with respect to the film material (2);

a control analysis unit (5) correspondingly connecting the temperature detecting module (4) and the wind power assisting unit (3), wherein the control analyzing unit (5) receives the sense of the temperature detecting module (4) Measuring a plurality of film materials (2) fixed point temperature data, and used to integrate the fixed point temperature data to obtain the film material (2) thickness and its abnormal points, the control analysis unit (5) can be adjusted according to the abnormal point analysis Control the amount of air that corresponds to the air outlet (31) at a different point.

When it is actually executed, please refer to the first to fourth figures, which are achieved by the following method steps. First, the raw material is pressurized and hot-dissolved through the feeding portion of the bag blowing machine (1), and then The die (11) discharges the material melted into a liquid shape, and the bag is formed by the die (11) by blowing the cooling air ring (12) provided above the die (11). The film material (2) performs a cooling operation; the bag film material (2) blows the process, the cooling air ring (12) supplies air to the bag film material (2), and the cooling air ring (12) is provided with a blower. The generated pressurized air is a cooling medium, and the film material (ie, between the die and the condensation line) is cooled, and when the cooling air passes through the cooling air ring (12) at a certain angle and speed, it is blown from the die ( 11) When the film material (2) is extruded, the high temperature film material (2) is in contact with the cooling air, and a large amount of heat on the film material (2) is transferred to the air and taken away, so that the film material (2) is obtained. cool down. However, the temperature of the film material (2) after this process has dropped a lot, but it has not been completely cooled. At this time, the film material (2) is still malleable when passing through the air outlets of the wind power assisting unit (3) (31). The wind flow of the wind can spread the thickness of the film (2), so the wind assisting unit (3) can control the thickness of the film (2); then, the number of the temperature detecting module (4) is set. Has the following implementation status, as explained below:

In the first embodiment, as shown in the first to fourth figures, when a temperature detector (41) is disposed in the temperature detecting module (4), it is disposed corresponding to the wind assisting unit (3), and Let the temperature detector (41) rotate in a circular orbit corresponding to the annular film material (2) and use it to detect the temperature of the film material (2); further the temperature detector (41) [can use an infrared sensor, a thermal imager The manner of rotating in a circular orbit can be achieved by connecting a driving device (43) for driving the temperature detector (41) to rotate in a circular orbit, or to rotate the temperature The detector (41) is disposed on an indexing plate (42), and the driving device (43) [such as a stepping motor, etc.] is disposed on the indexing plate (42) and used to drive the temperature detection The device (41) rotates in a circular orbit; moreover, the position angle of the temperature detector (41) is controlled to be at an inclination angle of the detection incident point of the sensing film material (2) with respect to the film material (2). X [this tilt angle X can be tilted up or down], and the tilt angle X is in the range of not penetrating the corresponding end point film (2); however, the tilt angle X is designed mainly for the temperature detector (41) The incident point of the detection beam is only passed through the film (2) of the end to be detected, and the temperature of the film (2) at that point can be accurately detected, and when there is no horizontal arrangement, the detection beam is linearly penetrated through the ring. The film material (2) corresponds to the two end points, causing inaccurate temperature detection. Continuing, when the temperature detector (41) is fixedly rotated corresponding to each air outlet (31) of the wind power assisting unit (3) and detecting the temperature of the film material (2), let the temperature detector (41) The temperature is detected with a plurality of fixed-point annular regions to detect the temperature of the annular region of the film material (2), and the temperature of the film material (2) is not completely cooled as described above, when the film material is measured (2) When the temperature is low, the thickness is thin [thickness, thin cooling rate, low temperature], and if the film temperature is high, the thickness is thick [thickness is thick, cooling rate is slow, and temperature is high].

Thereafter, the temperature detector (41) transmits the temperature data per certain point to the control analysis unit (5), and the temperature data of the plurality of temperature detectors (41) is collected by the control analysis unit (5) and After analysis, in the analysis process, the thickness of the film material (2) is determined by temperature to be related to each point data, and the abnormal point of the thickness of the film material (2), that is, the temperature average of a certain point [or number] is known. Too high indicates that the film (2) is too thick, or the average temperature of a point [or a few points] is too low, indicating that the film (2) is too thin, and these positions may cause uneven film thickness; The control analysis unit (5) can further generate a temperature change chart by analyzing the data, which can be used as a reference or adjustment basis by the manufacturer, and can also be connected and controlled by the control analysis unit (5). (3) The air outlet (31) adjusts the air volume.

In the second embodiment, as shown in the fifth to seventh embodiments, when the temperature detecting module (4) is provided with a plurality of temperature detectors (41), it is located at a position behind the wind assisting unit (3) or a temperature detector (41) is disposed on the wind assisting unit (3) [on the path of blowing the film], and corresponding to the position of each air outlet (31), wherein the temperature detector (41) further The infrared sensor and the thermal imager can be used, and the incident point of each temperature detector (41) is inclined at an angle X with respect to the film material (2), and the design of the tilt angle X mainly allows each temperature detector (41). The incident point of the detection beam is only passed through the film (2) of the end to be detected, and the temperature of the film (2) at that point can be accurately detected. When there is no horizontal arrangement, the detection beam straightly penetrates the annular film. Two corresponding endpoints cause problems with inaccurate temperature detection. Continuing, letting the arrangement of the temperature detectors (41) correspond to the film material (2) forming a temperature detection of a plurality of fixed-point annular regions, so as to be able to detect the temperature of the annular region of the film material (2) at a certain point, where the film The temperature of the material (2) is the same as above and is completely cooled. When the measured temperature of the film material (2) is low, the thickness is thin [thickness, thin cooling rate, low temperature], and if the film temperature is high, the thickness is thick [thickness is thick] Slow cooling rate and high temperature].

Thereafter, the temperature detector (41) transmits the temperature data per certain point to the control analysis unit (5), and the temperature data of the plurality of temperature detectors (41) is collected by the control analysis unit (5) and After analysis, the thickness of the film material (2) is determined by temperature in the analysis process, and the relative relationship between the thickness of each film material (2) is known, and the temperature of the film material (2) is known to be abnormal, that is, the temperature of a certain point [or a few points] is averaged. High means that the film (2) is too thick, or the average temperature of a point [or several points] is too low, indicating that the film (2) is too thin, and these positions will cause uneven film thickness; The control analysis unit (5) can further generate a temperature change chart by analyzing the data, which can be used as a reference or adjustment basis by the manufacturer, and can also automatically control the wind auxiliary unit by the control analysis unit (5). (3) Adjustment.

Then, in the automatic adjustment, the wind power assisting unit (3) is connected and controlled mainly via the control analyzing unit (5), and the control analyzing unit (5) is adjusted according to the air outlet (31) at the different point. The amount of air volume; thereby, the multi-point film material (2) temperature is analyzed and evaluated, and the air volume is automatically adjusted, so that the thickness of the bag film material (2) is uniform, and the effect of improving the yield of the blow bag product is achieved.

Please refer to the eighth to ninth drawings, which are the second method for controlling the thickness of the bag body of the bag blowing machine of the present invention, which is mainly characterized in that after the raw material is formed into a bag body by the die, the film material is cooled by air supply, and the film material is not completely cooled. At the time, the bag film material is subjected to temperature detection of a plurality of fixed-point annular regions, and the incident point of the temperature detection is inclined at an angle X with respect to the film material, so as to be able to detect the temperature of each ring point of the film material ring, and each fixed point The temperature data is collected and analyzed, and the thickness of the film is discriminated by the temperature, and the abnormal spot of the film thickness is further known, and the discharge gap of the die corresponding to the different spot is adjusted by control.

The structure of the bag blowing machine is substantially the same, and the implementation state is corresponding to detecting the temperature of the film material (2) blown by the end of the die (11) and adjusting the discharge gap of the die (11), so no a wind assisting unit (3); the temperature detecting module (4) is correspondingly mounted on the path of the cooling air ring (12) to blow out the film, and is used for detecting the film temperature, and the temperature detecting mode The group (4) correspondingly senses a fixed point temperature of the film material (2) of the molded bag body of the die (11), and allows the temperature detecting module (4) to detect the incident temperature of the sensing film material (2). The point is inclined at an angle X with respect to the film material (2); and the control analysis unit (5) is respectively connected to the temperature detecting module (4) and the die head (11), and the control analyzing unit ( 5) receiving the film material (2) fixed point temperature data sensed by the temperature detecting module (4), and integrating the fixed point temperature data to obtain the film material (2) thickness and the abnormal point, the control analyzing unit (5) can be based on the same Point analysis, and the adjustment control corresponds to the die (11) discharge gap at the same point.

Further, the temperature detecting module (4) is a single temperature detector (41) [as shown in the eighth figure] or composed of a plurality of temperature detectors (41) [as shown in the ninth figure], and the second method The embodiment of the temperature detecting module (4) is the same as the method 1 (this will not be repeated here). It mainly causes the temperature detector (41) to transmit each fixed point temperature data to the control analysis unit (5), and uses the control analysis unit (5) to collect temperature data of a plurality of temperature detectors (41) and After analysis, the thickness of the film material (2) is determined by temperature in the analysis process, and the relative relationship between the thickness of each film material (2) is known, and the temperature of the film material (2) is known to be abnormal, that is, the temperature of a certain point [or a few points] is averaged. High means that the film (2) is too thick, or the average temperature of a point [or several points] is too low, indicating that the film (2) is too thin, and these positions will cause uneven film thickness; The control analysis unit (5) can further generate a temperature change chart by analyzing the data, which can be used as a reference or adjustment basis by the manufacturer, and can also automatically control the die by the control analysis unit (5). 11) Adjustment.

Then, in the automatic adjustment, the die (11) is mainly connected and controlled via the control analysis unit (5). Of course, at the adjustment member of the die (11) for adjusting the gap, there is also an adjustment The mechanism of the active displacement of the piece by electrical control [the structure of this automatic control is numerous, such as the oil pressure that can be taken from the machine or the machine, etc., which is not described in the case of the case], and the control analysis unit (5) is linked to the mechanism. And corresponding to the discharge of the die (11) at the different sample point to adjust the discharge gap; thereby, the multi-point film material (2) temperature is taken for analysis and evaluation, and the discharge amount gap is automatically adjusted to make the bag body film The material (2) has the same thickness and achieves the effect of improving the yield of the blow bag product.

However, the above-described embodiments or drawings are not intended to limit the structure or the use of the present invention, and any suitable variations or modifications of the invention will be apparent to those skilled in the art.

From the above, the composition and use description of the system of the present invention show that the present invention has the following advantages as compared with the existing structure:

1. The method and device for controlling the thickness of the bag body of the bag blowing machine of the invention, by analyzing and evaluating the temperature of the multi-point film material and automatically adjusting the air volume, so that the thickness of the bag film material is uniform, and the bag product is improved. The efficacy of the rate.

2. The method and device for controlling the thickness of the bag body of the bag blowing machine of the present invention, the sensing design is set by the temperature detector at an oblique angle X, and the incident point of the detecting beam is mainly passed through the film material to be detected, which can be accurately The temperature of the film at the end is detected to achieve the accurate detection temperature.

3. The method and device for controlling the thickness of the bag body of the bag blowing machine of the invention can accurately analyze the state of the temperature distribution by the control analysis unit, and then adjust the air volume corresponding to the air outlet of the wind auxiliary unit at the different sample point to achieve the effect of precise control. .

In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application, and has completely complied with the provisions of the Patent Law. And the request, the application for the invention of a patent in accordance with the law, please forgive the review, and grant the patent, it is really sensible.

(1)‧‧‧Blowing machine

(11) ‧ ‧ dies

(12) ‧‧‧Cooling wind ring

(2) ‧ ‧ film materials

(3) ‧‧‧Wind Auxiliary Unit

(31) ‧‧‧air outlet

(4) ‧ ‧ temperature detection module

(41)‧‧‧ Temperature detector

(42) ‧ ‧ grading disk

(43)‧‧‧ drive

(5) ‧‧‧Control Analysis Unit

First Fig.: Overall side view of the bag blowing machine of the method of the present invention (Example 1).

The second figure is a schematic diagram of the architecture of the first embodiment of the present invention.

Third Embodiment: A schematic perspective view of a first embodiment of the present invention.

Fourth Figure: A side view of an embodiment of the present invention.

Fig. 5 is a schematic side view showing the whole of the bag blowing machine of the method of the present invention (Embodiment 2).

Figure 6 is a schematic perspective view of a second embodiment of the present invention.

Figure 7 is a side view showing the second embodiment of the present invention.

Figure 8 is a side elevational view of an embodiment of the second method of the present invention.

Figure 9 is a side view showing the second embodiment of the second method of the present invention.

Claims (10)

The invention relates to a method for controlling the thickness of a bag body of a bag blowing machine, which is mainly used for forming a bag body by a die, preliminarily cooling the film material by air supply, and applying a plurality of fixed-point blown film when the film material is not completely cooled, and blowing the film by air flow. The film thickness is controlled, and at the same time, the multi-point temperature detection is performed on the film material after the film blowing, and the incident point of the temperature detection is inclined at an angle X with respect to the film material, so as to be able to detect the fixed point of each film blowing in the annular region of the film material. Temperature, the temperature data of each fixed point is collected and analyzed, the thickness of the film material is determined by temperature, and the abnormal spot of the film material thickness is further known, and the blown film air volume corresponding to the different sample point is adjusted by control to balance Control the film thickness. The utility model relates to a bag body thickness equalization control device of a bag blowing machine, wherein the bag blowing machine is mainly provided with a die corresponding to the forming bag body, and a cooling air ring is arranged around the die head, and the bag body film is sent through the cooling air ring. The material is cooled, wherein the film material of the bag blowing machine is correspondingly monitored for thickness of the film through a device, and the device comprises: a wind power assisting unit, which is mounted above the cooling air ring, the wind power auxiliary unit a plurality of air outlets are arranged in the ring, the air outlets are corresponding to the film material to supply air, and the air flow is used to control the thickness of the film material; a temperature detecting module is correspondingly disposed on the path of the wind power auxiliary unit blowing film, and is used for Detecting a film temperature, and the temperature detecting module can detect the film temperature at a fixed point corresponding to each air outlet of the wind power auxiliary unit, and the temperature detecting module corresponds to the detecting incident temperature of the sensing film temperature. The film material is at an oblique angle X; a control analysis unit is respectively connected to the temperature detecting module and the wind power assisting unit, and the control analyzing unit receives the temperature The plurality of film fixed point temperature data sensed by the detection module is used to integrate and analyze the fixed point temperature data to obtain the film thickness and the abnormal point, and the control analysis unit can analyze the abnormal point according to the abnormal point, and the adjustment control corresponds to the abnormality. The air outlet of the air outlet at the point. The bagging machine body thickness equalization control device of claim 2, wherein the temperature detecting module comprises a temperature detector, the temperature detector is coupled to a driving device, and the driving device is used to drive The temperature detector detects the film temperature at a fixed point corresponding to the film material rotating in a circular orbit. The bagging machine body thickness equalization control device according to the second aspect of the invention, wherein the temperature detecting module comprises a plurality of temperature detectors, wherein the plurality of temperature detectors respectively correspond to the wind power assisting unit Each outlet is configured to detect the temperature of the film at each outlet. The invention relates to a method for controlling the thickness balance of a bag blowing machine, which is mainly characterized in that after the raw material is formed into a bag body by a die, the film material is cooled by air supply, and when the film material is not completely cooled, a multi-point annular region is applied to the bag film material. Temperature detection, and the incident point of the temperature detection is inclined at an angle X with respect to the film material, so as to be able to detect the temperature of each ring point of the film material, collect and analyze the temperature data of each certain point point, and determine the thickness of the film material by temperature. Further, the abnormal spot of the film thickness is known, and the discharge gap corresponding to the die at the different spot is adjusted by control. The bag body thickness equalization control method of the bag blowing machine according to claim 1 or 5, wherein the inclination angle X is in a range that does not penetrate the corresponding end film of the incident point. The utility model relates to a bag thickness balancing control device for a bag blowing machine, which mainly comprises a die corresponding to the forming bag body, and a cooling air ring is arranged around the upper end of the die, and the bag film material is cooled by the cooling air ring. Wherein the device is provided with a device corresponding to the thickness of the film, the device comprises: a temperature detecting module, which is disposed on a path of the cooling air ring to blow the film, and is used The temperature detecting module is configured to sense a fixed point temperature of the film material of the die forming bag body, and the detecting point of the temperature detecting module corresponding to the sensing film material temperature is relative to the The film material is at an oblique angle X; a control analysis unit is respectively connected to the temperature detecting module and the die, and the control analyzing unit receives the film fixed temperature data sensed by the temperature detecting module, And used to integrate the fixed-point temperature data and obtain the film thickness and its abnormal points. The control analysis unit can adjust the control corresponding to the die at the abnormal point according to the analysis of the different sample points. Those gaps. The bagging machine body thickness equalization control device of the invention of claim 8, wherein the temperature detecting module comprises a temperature detector, the temperature detector is coupled to a driving device, and the driving device is used to drive The temperature detector detects the film temperature at a fixed point corresponding to the film material rotating in a circular orbit. The bagging machine body thickness equalization control device of the invention of claim 8, wherein the temperature detecting module comprises a plurality of temperature detectors, wherein the plurality of temperature detectors are respectively disposed corresponding to the cooling wind And used to detect the fixed temperature of the film material of the die-forming bag body. The bagging machine body thickness equalization control device according to claim 2, wherein the inclination angle X is in a range that does not penetrate the corresponding end film of the incident point.