Automatic glue extruding device and preparation method of ACF

Abstract

The invention provides an automatic glue extruding device and a preparation method of an ACF, and belongs to the technical field of anisotropic conductive films, and the automatic glue extruding device comprises an extruding plate which is provided with a bag body placing area; the driving module comprises two linear driving elements which are arranged in parallel, and the two linear driving elements are fixed to the extrusion plate and located on the two sides of the bag body containing area correspondingly; the two ends of the extrusion roller are connected with the two linear driving elements correspondingly, the moving area of the extrusion roller is located above the bag body containing area, and an extrusion gap is reserved between the moving area of the extrusion roller and the bag body containing area; the automatic glue extruding device has the beneficial effects that glue-shaped base materials are uniformly and continuously extruded through the automatic glue extruding device, the manual operation time is shortened, the labor intensity is reduced, it is ensured that glue is completely extruded, residues in bags are reduced, raw material waste is reduced, it can be ensured that the glue is extruded at a stable speed by accurately controlling the extruding speed, and the production efficiency is improved. And the uniformity and the performance consistency of the ACF material are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of anisotropic conductive films and relates to an automatic glue squeezing device and a method for preparing an ACF. Background Art

[0002] Anisotropic Conductive Film (ACF) is a material widely used in electronic packaging and connection technology, especially in electronic products such as liquid crystal displays (LCDs) and organic light-emitting diode (OLED) screens, to achieve electrical connections between chips and substrates. ACF is composed of a substrate, conductive particles, and a base resin. It can provide good conductivity in a specific direction (usually the vertical direction) while maintaining insulation in other directions, hence the name "anisotropic".

[0003] The substrate of ACF is usually a polymer material such as polyester (PET) or polyimide (PI), which has good mechanical strength, thermal stability and chemical stability. Conductive particles are the core component of ACF, usually micron or nanometer particles made of metal (such as gold, silver, nickel) or carbon-based materials. The choice of conductive particles directly affects the conductive performance, reliability and cost of ACF. The preparation process of ACF involves multiple steps, among which the mixing process is one of the key links. The uniform distribution of conductive particles and matrix resin needs to be ensured during the mixing process.

[0004] In the preparation process of ACF (anisotropic conductive film), the substrate is usually stored in a bag in a gel form. In the existing mixing process, the gel substrate is mainly extruded by manual operation, that is, the glue is squeezed out of the bag mouth by manually squeezing the bag. However, the efficiency and speed of manual glue extrusion are low, which cannot meet the needs of large-scale production. In addition, it is difficult to completely squeeze out the glue in the bag manually, resulting in a waste of raw materials and increased production costs. More importantly, it is difficult to accurately control the glue extrusion rate during manual extrusion, which makes it difficult to control the mixing speed, thus affecting the stability of product quality. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to provide an automatic glue squeezing device and an ACF preparation method.

[0006] The purpose of the present invention can be achieved through the following technical solutions: an automatic glue squeezing device, comprising:

[0007] An extrusion plate, wherein the extrusion plate has a bag placement area;

[0008] A driving module, the driving module comprising two parallel linear driving elements, the two linear driving elements are fixed to the extrusion plate and are respectively located on both sides of the bag body placement area, and the two linear driving elements are configured to move synchronously;

[0009] The squeezing roller has two ends connected to the two linear drive elements respectively, and the two linear drive elements drive the squeezing roller to move when they move. The moving area of ​​the squeezing roller is located above the bag body placement area and an squeezing gap is reserved between the two.

[0010] Preferably, the linear drive element is a cylinder or a hydraulic cylinder or a linear motor or an electric screw.

[0011] Preferably, the linear drive element is configured as an electric screw, which includes a servo motor, a screw and a nut. The screw is connected to the servo motor and the servo motor can drive the screw to rotate. The nut is connected to the screw and moves along the axial direction of the screw when the screw rotates. The two ends of the extrusion roller are respectively connected to the nuts of the two electric screws.

[0012] Preferably, a programmable logic controller is further included, the servo motor is equipped with an encoder, and the encoder and the motor controller of the servo motor are electrically connected to the programmable logic controller.

[0013] Preferably, the electric screw also includes a slide seat, the slide seat is fixedly connected to the extrusion plate, the servo motor is fixed to the end of the slide seat, the screw is passed through the slide seat, the nut can be slidably installed in the slide seat and the slide seat limits the rotation of the nut.

[0014] Preferably, it further comprises a bracket, the bracket is equipped with at least one lifting cylinder, the extrusion plate is connected to the lifting cylinder, the lifting cylinder can drive the extrusion plate to rise and fall, and the travel position of the extrusion plate includes a loading and unloading position and a working position.

[0015] Preferably, the bracket is installed with four lifting cylinders, the four lifting cylinders are arranged to move synchronously, and the piston rods of the four lifting cylinders are respectively connected to the four corners of the extrusion plate.

[0016] Preferably, the extrusion roller includes a roller shaft and a roller cylinder, both ends of the roller shaft are provided with connectors, the two ends of the roller shaft are respectively fixedly connected to the nuts of the two electric screws through the connectors, the roller cylinder is sleeved on the roller shaft, at least two bearings are provided between the roller and the roller shaft, and the roller is allowed to rotate relative to the roller shaft.

[0017] A method for preparing ACF, comprising the automatic glue extrusion device, further comprising the following steps:

[0018] S1: The lifting cylinder drives the extrusion plate down to the loading and unloading position. The operator places the bag containing the glue-like substrate in the bag placement area, and then starts the lifting cylinder. The lifting cylinder drives the extrusion plate up to the working position and waits for operation.

[0019] S2: The programmable logic controller controls the servo motor to run at the set speed through the motor controller and the encoder. When the two servo motors are running, they drive the two screws to rotate synchronously. The nuts on the two screws drive the extrusion rollers to move at the set running speed.

[0020] S3: When the squeezing roller moves, it squeezes the bag located in the bag body placement area, and the bag is squeezed at a uniform speed by the squeezing roller, thereby squeezing out the glue-like substrate at a stable output speed;

[0021] S4: The glue-like base material in the bag is squeezed into the barrel at a steady speed and evenly mixed with the conductive particles.

[0022] Preferably, in step S2, the model of the glue-like substrate to be squeezed is first input on the touch screen, and the programmable logic controller controls the squeezing roller to squeeze the bag at a corresponding operating speed according to the internally stored parameters.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The automatic glue extrusion device realizes uniform and continuous extrusion of the glue-like substrate, reducing the time and labor intensity of manual operation, ensuring that the glue is completely squeezed out, reducing the residue in the bag, reducing the waste of raw materials, and can also accurately control the extrusion speed to ensure that the glue is squeezed out at a stable speed, thereby improving the uniformity and performance consistency of the ACF material.

[0025] 2. The electric screw can achieve high-precision linear motion, ensuring that the moving speed and position of the extrusion roller are accurately controllable. Through the precise control of the servo motor, the electric screw can ensure the smooth movement of the extrusion roller and avoid jitter and jamming.

[0026] 3. The programmable logic controller (PLC) can accurately control the speed and position of the servo motor to ensure that the moving speed and position of the extrusion roller are highly accurate. The encoder can provide real-time feedback on the position information of the servo motor to ensure the closed-loop control of the system and improve the control accuracy. By inputting parameters on the touch screen, the PLC can adjust the extrusion speed and position according to different models of glue-like substrates to meet various production needs.

[0027] 4. The motor controller controls the current and voltage of the servo motor according to the instructions issued by the PLC to achieve precise speed and position control. The servo motor provides precise rotational motion to drive the screw to rotate.

[0028] 5. The lifting cylinder can realize the automatic lifting of the extrusion plate, which is convenient for operators to load and unload bags and carry out work. The travel position of the lifting cylinder includes the loading and unloading position and the working position, ensuring that the bag placement and extrusion process is efficient and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the automatic glue squeezing device of the present invention.

[0030] Figure 2 It is a top view of the automatic glue squeezing device of the present invention.

[0031] Figure 3 It is a partial side view of the automatic glue squeezing device of the present invention.

[0032] Figure 4 It is a schematic diagram of the connection relationship between the extrusion plate and the lifting cylinder of the present invention.

[0033] In the figure, 100, extrusion plate; 110, bag body placement area; 200, electric screw; 210, servo motor; 220, screw; 230, slide seat; 300, extrusion roller; 400, bracket; 410, lifting cylinder. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0035] like Figure 1-3 As shown, an automatic glue squeezing device includes: an extrusion plate 100, the extrusion plate 100 has a bag placement area 110; a driving module, the driving module includes two parallel linear driving elements, the two linear driving elements are fixed on the extrusion plate 100 and are respectively located on both sides of the bag placement area 110, and the two linear driving elements are set to move synchronously; an extrusion roller 300, the two ends of the extrusion roller 300 are respectively connected to the two linear driving elements, the two linear driving elements drive the extrusion roller 300 to move when moving, and the moving area of ​​the extrusion roller 300 is located above the bag placement area 110 and an extrusion gap is reserved between the two.

[0036] The extrusion plate 100 has a special bag placement area 110 for placing bags containing glue-like substrates. The two ends of the extrusion roller 300 are respectively connected to two linear drive elements. When the linear drive elements move, the extrusion roller 300 is driven to move along a predetermined path above the bag placement area 110. A certain extrusion gap is reserved between the extrusion roller 300 and the bag placement area 110 to ensure that the glue can be squeezed out smoothly when the bag is subjected to uniform pressure.

[0037] During the automatic glue squeezing process, the operator places the bag containing the glue-like substrate in the bag placement area 110, and the two linear drive elements of the drive module move synchronously, driving the squeezing roller 300 to move along the bag placement area 110. The squeezing roller 300 squeezes the bag evenly during the movement, and the glue is squeezed out at a stable speed. The squeezed glue is collected in a designated container for subsequent processing or mixing.

[0038] The automatic glue extrusion device achieves uniform and continuous extrusion of the glue-like substrate, reducing the time and labor intensity of manual operation, ensuring that the glue is completely squeezed out, reducing the residue in the bag, and reducing raw material waste. It can also ensure that the glue is squeezed out at a stable speed by precisely controlling the extrusion speed, thereby improving the uniformity and performance consistency of the ACF material.

[0039] On the basis of the above-mentioned embodiment, the linear drive element is a cylinder or a hydraulic cylinder or a linear motor or an electric screw 200. It should be explained that the linear motor directly drives the mover to move along the linear guide rail through electromagnetic force, thereby driving the squeezing roller 300 to move. Its advantage is that linear motion is directly generated without the need for an intermediate conversion mechanism. The electric screw 200 drives the screw 220 to rotate through the servo motor 210, and the nut on the screw 220 moves along the axial direction of the screw 220, thereby driving the squeezing roller 300 to move. Its advantages are high precision and flexible control, and it is suitable for occasions requiring high precision and programmable control.

[0040] like Figure 1 As shown, on the basis of the above embodiment, the linear drive element is configured as an electric screw 200, which includes a servo motor 210, a screw 220 and a nut. The screw 220 is connected to the servo motor 210 and the servo motor 210 can drive the screw 220 to rotate. The nut is connected to the screw 220 and moves along the axial direction of the screw 220 when the screw 220 rotates. The two ends of the extrusion roller 300 are respectively connected to the nuts of the two electric screws 200.

[0041] The electric screw 200 can achieve high-precision linear motion, ensuring that the moving speed and position of the squeezing roller 300 are precisely controllable. Through the precise control of the servo motor 210, the electric screw 200 can ensure the smooth movement of the squeezing roller 300 to avoid jitter and jamming. More importantly, the speed and position of the servo motor 210 can be adjusted by a programmable logic controller (PLC) to adapt to different types of glue and production requirements. Specifically, the servo motor 210 provides power and can accurately control the speed and position. The nut cooperates with the screw 220. When the screw 220 rotates, the nut moves along the axial direction of the screw 220.

[0042] The servo motor 210 receives instructions from a programmable logic controller (PLC) and rotates at a set speed and position. The rotational motion of the servo motor 210 is transmitted to the nut through the screw 220, so that the nut moves along the axial direction of the screw 220. The two ends of the squeezing roller 300 are respectively fixedly connected to the nuts of the two electric screws 200. When the nut moves, the squeezing roller 300 is driven to move along a predetermined path above the bag body placement area 110. The squeezing roller 300 squeezes the bag evenly during the movement, and the glue is squeezed out at a stable speed.

[0043] On the basis of the above embodiment, a programmable logic controller is further included, and the servo motor 210 is equipped with an encoder, and the encoder and the motor controller of the servo motor 210 are electrically connected to the programmable logic controller.

[0044] The programmable logic controller (PLC) can accurately control the speed and position of the servo motor 210 to ensure that the moving speed and position of the extrusion roller 300 are highly accurate. The encoder can provide real-time feedback of the position information of the servo motor 210 to ensure the closed-loop control of the system and improve the control accuracy. By inputting parameters through the touch screen, the PLC can adjust the extrusion speed and position according to different models of glue-like substrates to meet various production needs.

[0045] Specifically, the programmable logic controller (PLC) serves as a central control unit. The PLC receives operating instructions and sensor signals to control the operation of the servo motor 210. The PLC controls the speed and position of the servo motor 210 according to the input parameters (such as glue model, extrusion speed, etc.) through preset program logic. The motor controller controls the current and voltage of the servo motor 210 according to the instructions issued by the PLC to achieve precise speed and position control. The servo motor 210 provides precise rotational motion to drive the screw 220 to rotate. The encoder feeds back the position information of the servo motor 210 in real time to achieve closed-loop control. The encoder is installed on the servo motor 210. As the motor rotates, the encoder generates a position signal and sends it back to the PLC. The PLC adjusts the control instructions of the motor according to these signals to ensure that the actual position is consistent with the set position.

[0046] On the basis of the above embodiment, the electric screw 200 further includes a slot seat 230, the slot seat 230 is fixedly connected to the extrusion plate 100, the servo motor 210 is fixed to the end of the slot seat 230, the screw 220 is inserted into the slot seat 230, the nut is slidably installed in the slot seat 230, and the slot seat 230 limits the rotation of the nut. The slot seat 230 is used to fix the servo motor 210 and the screw 220, limit the rotation of the nut, and ensure that the nut can only move along the axial direction of the screw 220.

[0047] like Figure 1-4 As shown, on the basis of the above embodiment, it also includes a bracket 400, the bracket 400 is equipped with at least one lifting cylinder 410, the extrusion plate 100 is connected to the lifting, the lifting cylinder 410 can drive the extrusion plate 100 to rise and fall, and the travel position of the extrusion plate 100 includes a loading and unloading position and a working position.

[0048] The automatic lifting of the extrusion plate 100 is realized by the lifting cylinder 410, which is convenient for operators to load and unload bags and perform work. The travel position of the lifting cylinder 410 includes a loading and unloading position and a working position, ensuring that the placement and extrusion process of the bag is efficient and accurate.

[0049] On the basis of the above embodiment, the bracket 400 is installed with four lifting cylinders 410 , and the four lifting cylinders 410 are configured to move synchronously, and the piston rods of the four lifting cylinders 410 are respectively connected to the four corners of the extrusion plate 100 .

[0050] The four lifting cylinders 410 move synchronously to ensure that the extrusion plate 100 remains horizontal during the lifting process to avoid tilting and jamming. The four cylinders are respectively connected to the four corners of the extrusion plate 100 to provide uniform support force to ensure the stability and rigidity of the extrusion plate 100.

[0051] like Figure 1-3 As shown, on the basis of the above embodiment, the extrusion roller 300 includes a roller shaft and a roller drum, connectors are provided at both ends of the roller shaft, and the two ends of the roller shaft are respectively fixedly connected to the nuts of the two electric screws 200 through the connectors, the roller drum is sleeved on the roller shaft, at least two bearings are provided between the roller and the roller shaft, and the roller is allowed to rotate relative to the roller shaft.

[0052] The roller shaft is used as a supporting and connecting component. It is fixed to the nut of the electric screw 200 through a connector to ensure the stable movement of the extrusion roller 300. The two ends of the roller shaft are fixedly connected to the nut of the electric screw 200 through a connector. When the nut moves axially along the screw 220, the roller shaft is driven to move together. The roller directly contacts the bag and achieves uniform extrusion of the bag by rolling. This design allows the roller to rotate freely, ensuring uniform extrusion of the bag and improving the extrusion efficiency and quality of the glue. The free rotation of the roller ensures a smoother extrusion process and reduces damage to the bag.

[0053] like Figure 1-4 As shown, based on the above embodiment, a method for preparing ACF includes an automatic glue squeezing device, and further includes the following steps:

[0054] S1: The lifting cylinder 410 drives the extrusion plate 100 to descend to the loading and unloading position, and the operator places the bag containing the glue-like substrate in the bag placement area 110, and then starts the lifting cylinder 410, which drives the extrusion plate 100 to rise to the working position and wait;

[0055] S2: The programmable logic controller controls the servo motor 210 to run at a set speed through the motor controller and the encoder. When the two servo motors 210 run, they drive the two screw rods 220 to rotate synchronously. The nuts on the two screw rods 220 drive the squeezing roller 300 to move at the set running speed.

[0056] S3: the squeezing roller 300 squeezes the bag located in the bag body placement area 110 while moving, and the bag is squeezed at a uniform speed by the squeezing roller 300 so as to extrude the glue-like substrate at a stable output speed;

[0057] S4: The glue-like base material in the bag is squeezed into the barrel at a steady speed and evenly mixed with the conductive particles.

[0058] Step S1 is actually loading and unloading and positioning, which is to facilitate the operator to place the bag and ensure that the bag is in the correct position when it is in the working position. Step S2 starts extrusion, ensuring that the extrusion roller 300 moves at a precise speed and position to achieve uniform extrusion. Step S3 uniform extrusion ensures that the glue-like substrate is extruded at a stable speed, avoids uneven or intermittent extrusion, and improves product quality. Step S4 mixing and collection ensures that the glue-like substrate is fully mixed with the conductive particles to form a uniform ACF material.

[0059] In this method, the automatic operation of the automatic glue squeezing device is used to reduce manual intervention and improve production efficiency. The moving speed and position of the squeezing roller 300 are ensured to be accurate through the closed-loop control of the PLC and the encoder. The roller can rotate freely to ensure uniform squeezing of the bag and improve the efficiency and quality of glue squeezing. By inputting parameters through the touch screen, the squeezing speed and position can be adjusted according to different models of glue-like substrates to meet various production needs. It is particularly suitable for large-scale industrial production to ensure the quality and performance of ACF materials.

[0060] On the basis of the above embodiment, in step S2, the model of the glue-like substrate to be squeezed is first input on the touch screen, and the programmable logic controller controls the squeezing roller 300 to squeeze the bag at a corresponding operating speed according to the internally stored parameters.

[0061] The operator inputs the model of the glue-like substrate to be extruded through the touch screen. The PLC stores parameters corresponding to different models of glue-like substrates, such as extrusion speed, pressure, etc. The PLC calls the corresponding parameters according to the input model to control the speed and position of the servo motor 210. The encoder feeds back the position information of the servo motor 210 in real time to ensure that the moving speed and position of the extrusion roller 300 are accurate.

[0062] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, in the present invention, the descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0064] In the present invention, unless otherwise clearly stipulated and limited, the terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited.

[0065] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An automatic glue squeezing device, characterized in that: include: An extrusion plate (100), wherein the extrusion plate (100) has a bag placement area (110); A driving module, the driving module comprising two linear driving elements arranged in parallel, the two linear driving elements being fixed on the extrusion plate (100) and respectively located on both sides of the bag body placement area (110), and the two linear driving elements being arranged to move synchronously; An extrusion roller (300), wherein both ends of the extrusion roller (300) are respectively connected to the two linear drive elements, and when the two linear drive elements move, the extrusion roller (300) is driven to move, and the moving area of ​​the extrusion roller (300) is located above the bag body placement area (110) and an extrusion gap is reserved between the two.

2. An automatic glue squeezing device as claimed in claim 1, characterized in that: The linear drive element is a cylinder or a hydraulic cylinder or a linear motor or an electric screw (200).

3. An automatic glue squeezing device as claimed in claim 2, characterized in that: The linear drive element is configured as an electric screw (200), the electric screw (200) comprising a servo motor (210), a screw (220) and a nut, the screw (220) being connected to the servo motor (210) and the servo motor (210) being capable of driving the screw (220) to rotate, the nut being connected to the screw (220) and moving along the axial direction of the screw (220) when the screw (220) rotates, and the two ends of the squeezing roller (300) being respectively connected to the nuts of the two electric screws (200).

4. An automatic glue squeezing device as claimed in claim 3, characterized in that: It also includes a programmable logic controller, the servo motor (210) is equipped with an encoder, and the encoder and the motor controller of the servo motor (210) are both electrically connected to the programmable logic controller.

5. The automatic glue squeezing device according to claim 3, characterized in that: The electric screw (200) further comprises a slide groove seat (230), wherein the slide groove seat (230) is fixedly connected to the extrusion plate (100), the servo motor (210) is fixed to the end of the slide groove seat (230), the screw (220) is inserted into the slide groove seat (230), the nut is slidably installed in the slide groove seat (230), and the slide groove seat (230) limits the rotation of the nut.

6. The automatic glue squeezing device according to claim 1, characterized in that: It also includes a bracket (400), the bracket (400) is equipped with at least one lifting cylinder (410), the extrusion plate (100) is connected to the lifting cylinder, the lifting cylinder (410) can drive the extrusion plate (100) to rise and fall, and the travel position of the extrusion plate (100) includes a loading and unloading position and a working position.

7. An automatic glue squeezing device as claimed in claim 6, characterized in that: The bracket (400) is installed with four lifting cylinders (410), the four lifting cylinders (410) are arranged to move synchronously, and the piston rods of the four lifting cylinders (410) are respectively connected to the four corners of the extrusion plate (100).

8. An automatic glue squeezing device as claimed in claim 3, characterized in that: The squeezing roller (300) comprises a roller shaft and a roller drum, both ends of the roller shaft are provided with connectors, the two ends of the roller shaft are respectively fixedly connected to the nuts of the two electric screws (200) through the connectors, the roller drum is sleeved on the roller shaft, at least two bearings are provided between the roller drum and the roller shaft, and the roller drum is allowed to rotate relative to the roller shaft.

9. A method for preparing ACF, characterized in that: The automatic glue squeezing device according to any one of claims 1 to 7 further comprises the following steps: S1: The lifting cylinder (410) drives the extrusion plate (100) to descend to the loading and unloading position, and the operator places the bag containing the glue-like substrate in the bag placement area (110), and then starts the lifting cylinder (410), and the lifting cylinder (410) drives the extrusion plate (100) to rise to the working position and wait; S2: The programmable logic controller controls the servo motor (210) to run at a set speed through the motor controller and the encoder. When the two servo motors (210) are running, they drive the two screw rods (220) to rotate synchronously. The nuts on the two screw rods (220) drive the squeezing roller (300) to move at the set running speed. S3: the squeezing roller (300) squeezes the bag located in the bag body placement area (110) while moving, and the bag is squeezed at a uniform speed by the squeezing roller (300) so as to extrude the glue-like substrate at a stable output speed; S4: The glue-like base material in the bag is squeezed into the barrel at a steady speed and evenly mixed with the conductive particles.

10. The method for preparing an ACF according to claim 9, characterized in that: In step S2, the model of the glue-like substrate to be squeezed is first input on the touch screen, and the programmable logic controller controls the squeezing roller (300) to squeeze the bag at a corresponding operating speed according to the internally stored parameters.

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