A reflective vest reflective strip hot-pressing module and its process

Abstract

This invention discloses a reflective vest reflective strip hot-pressing module and its process, relating to the field of reflective strip hot-pressing technology. The invention includes a support platform, an inner sleeve, a hot-pressing plate, an air extraction assembly, and a cleaning mechanism. The contact plate of the inner sleeve is equipped with micro-airflow holes, which, in conjunction with a piston plate, pins, and a vacuum pump, achieve air extraction during hot pressing. Furthermore, the hot-pressing process of this invention sequentially performs a low-temperature gentle pressing, a preheating and air extraction stage with gradual air extraction, and a high-temperature, high-pressure melting and bonding stage. Automatic cleaning is triggered by piston plate movement monitoring, and residual adhesive is ejected using pins and cleaned by a brush roller. This invention effectively avoids air bubbles between the reflective strip and the fabric, enhances adhesion, and simultaneously achieves automatic equipment cleaning, improving the quality and efficiency of hot pressing.

Description

Technical Field

[0001] This invention relates to the field of reflective strip hot pressing technology, and in particular to a reflective vest reflective strip hot pressing module and its process. Background Technology

[0002] As an important piece of equipment for ensuring the safety of outdoor workers, the durability and reflective performance of reflective strips on reflective vests directly affect their safety protection effect. The bonding between reflective strips and vest fabric mainly relies on a hot-pressing process, which involves heating the adhesive layer of the reflective strips to melt it while applying pressure to achieve a tight bond between the two.

[0003] In existing technologies, reflective strip hot pressing often uses a flatbed hot press to directly heat and press the reflective strip and the fabric. However, this type of equipment has obvious drawbacks: during the hot pressing process, when the flatbed hot press is working, the adhesive layer is prone to localized melting, causing the air between the reflective strip and the fabric to be sealed prematurely, forming air bubbles. This not only affects the bonding strength but also reduces the reflective stability of the reflective strip due to uneven stress on the reflective layer at the air bubbles.

[0004] Therefore, how to avoid the problem of localized melting bubbles not being able to be discharged in time and improve the hot pressing quality of reflective strips has become a technical problem that needs to be solved in the hot pressing process of reflective vests. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] The present invention provides a reflective vest reflective strip hot pressing module, including a support platform, a vest fabric placed above the support platform, a reflective strip placed in a designated area on the upper side of the vest fabric, and a hot pressing plate for hot pressing the reflective strip, wherein the side of the reflective strip facing the vest fabric is an adhesive backing layer.

[0007] An inner sleeve is embedded in the bottom surface of the support platform. The inner sleeve includes a contact plate, the top surface of which is flush with the top surface of the support platform. An inner cavity surrounds the inner sleeve. Multiple vertically penetrating micro-airflow holes are formed in the contact plate and communicate with the inner cavity. A piston plate is movably disposed within the inner cavity. Multiple pins that mate with the micro-airflow holes are fixed on the top surface of the piston plate, and a magnetic block is embedded in the bottom surface of the piston plate.

[0008] A first lifter and a distance detection module that vertically probes the distance to the bottom surface of the piston plate are fixedly installed directly below the inner sleeve. An electromagnetic module is driven and connected above the first lifter, and the electromagnetic module is magnetically driven and connected to a magnetic block. A vacuum pipe communicating with the inner cavity is connected to the side of the inner sleeve, and the vacuum pipe is connected to a vacuum pump.

[0009] A cleaning mechanism is also provided on the side of the support platform. The cleaning mechanism includes a brush roller that rubs against the top surface of the contact plate and a horizontal telescopic device that drives the brush roller to move horizontally.

[0010] As a preferred technical solution of the hot pressing module of the present invention: a lifting drive device for driving the hot pressing plate to move vertically up and down is also configured above the hot pressing plate.

[0011] As a preferred technical solution of the hot-pressing module of the present invention: multiple micro airflow holes are distributed in an array and their distribution range is matched with the area of ​​the reflective strip covering the vest fabric.

[0012] As a preferred technical solution of the hot-pressing module of the present invention: an outer connecting frame is fixedly configured around the inner sleeve, and a bottom crossbeam is fixedly installed on the bottom side of the outer connecting frame. A first lifter and a distance detection module are fixedly installed on the top surface of the bottom crossbeam. A drive shaft is provided at the output end of the first lifter, and an electromagnetic module is fixedly installed at the top of the drive shaft.

[0013] As a preferred technical solution of the hot-pressing module of the present invention: the bottom surface of the contact plate is provided with a wide conical opening that communicates with the bottom of the micro-airflow holes. Multiple micro-airflow holes are aligned and fitted with multiple pins one by one. The vertical length of the pins is greater than the total vertical height of the micro-airflow holes and the wide conical opening. Wherein, after the pins are fully inserted upward into the micro-airflow holes, the top tip of the pins protrudes from the top opening of the micro-airflow holes.

[0014] As a preferred embodiment of the hot-pressing module of the present invention: the cleaning mechanism further includes an upper support, the brush roller is mounted on the inner perimeter of the upper support via bearings, and a micro motor for driving the brush roller to rotate is configured on the side of the upper support. A horizontal shaft is provided at the output end of the horizontal telescopic device, and the horizontal shaft is fixedly connected to the upper support.

[0015] As a preferred embodiment of the hot-pressing module of the present invention: the horizontal position of the opening connecting the suction pipe and the inner cavity is lower than the bottom surface of the support platform. When the piston plate is at its lowest stroke position, the horizontal position of the top surface of the piston plate is lower than the opening connecting the suction pipe and the inner cavity.

[0016] This invention provides a hot-pressing process for reflective strips on reflective vests, comprising the following:

[0017] S1. After placing the vest fabric and reflective strips, activate the distance detection module to detect the distance to the bottom surface of the piston plate. If the detected value is greater than the system's preset minimum reference value L... x1 When the electromagnetic module is powered on and attracts the magnetic block, the first lifter drives the piston plate to move down until the distance detection module detects that the distance between the piston plate and the piston plate reaches Lx1, thus completing the initial positioning.

[0018] S2. The hot press plate moves downward, contacts and presses down on the reflective strip, and at the same time begins to heat the adhesive layer of the reflective strip. The hot pressing process is divided into a preheating and degassing stage and a melting and bonding stage, which are carried out in sequence.

[0019] S3. During the preheating and exhaust stage, the hot press plate is set to a low heating temperature T. d and low pressure P dThis state is maintained for a certain period of time. During this stage, the electromagnetic module remains energized, attracting the magnetic block to keep the piston plate at the lowest point of its vertical stroke. The vacuum pump evacuates air from the inner cavity through the evacuation pipe, with the evacuation power calculated according to P. x =λ・P max +P0 runs, where λ is the running reference coefficient, initially λ=1, gradually decreasing to 0 as time increases, P max P0 represents the maximum pumping power, and P1 represents the minimum pumping power.

[0020] S4. After the preheating and venting stage, the melting and bonding stage begins, and the hot press plate is set to a high heating temperature T. g and high pressure P g This state lasts for a certain period of time. At this time, λ=0, and the vacuum pump operates at power P0. Where T... d <T g P d <P g .

[0021] S5. During the melting and bonding stage, the electromagnetic module is de-energized, breaking the magnetic attraction with the magnetic block. If the distance detection module detects the piston plate moving upward, the vacuum pump stops pumping air.

[0022] S6. After hot pressing is completed, if the piston plate moves upward during the melting and bonding stage, proceed to steps S7 and S8; otherwise, proceed directly to step S9 and continue to the next processing cycle.

[0023] S7. In cleaning mode, the electromagnetic module is energized to attract the magnetic block, and the first lifter drives the piston plate to rise to the top of the inner cavity. At this time, the pin is fully inserted into the micro airflow hole and the top protrudes out of the opening, pushing out the solidified colloid remaining in the hole.

[0024] S8. The horizontal telescopic device drives the brush roller to move horizontally, so that the brush roller comes into contact with the top surface of the contact plate and the top of the pin to remove residual impurities. After cleaning, the horizontal telescopic device drives the brush roller to return to the initial position.

[0025] S9. The first lifting device drives the piston plate and pin to move downwards until the distance detection module detects that the piston plate distance has returned to L. x1 After cleaning, reset the device to prepare for the next hot pressing operation.

[0026] Compared with existing technologies, the beneficial effects of this invention are:

[0027] 1. In the preheating and degassing stage, the hot press plate processes the adhesive layer of the reflective strip at low heating temperature and low pressure, while the vacuum pump operates according to a specific power formula, initially using a higher power to extract air, which is then gradually reduced. This setup effectively extracts air between the reflective strip and the vest fabric through micro-airflow holes before the adhesive layer is fully melted, avoiding the formation of air bubbles due to residual air and laying the foundation for subsequent strong adhesion. Furthermore, the high heating temperature and high pressure used in the melting and bonding stage promote full melting of the adhesive layer, ensuring a tight bond with the vest fabric and significantly enhancing the adhesion strength between the reflective strip and the fabric, ensuring that the reflective strip is less likely to detach during long-term use.

[0028] 2. In this invention, the piston plate movement monitoring method can promptly address the problem of micro-airflow hole blockage during the melting and bonding stage. Combined with the automatic cleaning mechanism (pins ejecting residual colloids + brush rollers cleaning impurities), it ensures the continuous and stable operation of the equipment and reduces the degree of manual intervention.

[0029] 3. This invention significantly improves the quality and efficiency of hot pressing of reflective strips on reflective vests, enhances the adhesion between reflective strips and fabric, and enables automatic monitoring and cleaning of the equipment, thus possessing high practical value. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the reflective strip hot-pressing module of the present invention.

[0031] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0032] Figure 3 This is a schematic diagram of the overall structure of the reflective strip hot-pressing module and the air pump of the present invention.

[0033] Figure 4 This is a schematic diagram of the piston plate moving upward during the melt bonding stage in this invention.

[0034] Figure 5 This is a schematic diagram of the structure of the brush roller during cleaning in this invention.

[0035] Figure 6 for Figure 5 A magnified structural diagram of section B in the middle.

[0036] Figure 7 This is a top view of the cleaning mechanism in this invention.

[0037] The components are: 1-support platform; 2-inner sleeve, 201-contact plate, 202-inner cavity, 203-micro airflow hole, 204-wide conical opening; 3-outer connecting frame, 301-bottom crossbeam; 4-first lifting device, 401-drive shaft; 5-electromagnetic module; 6-piston plate; 7-magnetic block; 8-pin; 9-distance detection module; 10-vest fabric; 11-reflective strip, 1101-adhesive layer; 12-extraction pipe; 13-vacuum pump; 14-hot press plate; 15-brush roller; 16-upper bracket; 17-micro motor; 18-horizontal telescopic device; 19-horizontal shaft. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] Example 1: This invention designs a reflective vest reflective strip hot-pressing module, the main structural features of which are as follows:

[0040] (a) Supporting platform and foundation bearing structure

[0041] Please see Figure 1 , Figure 5 , Figure 7 The support platform 1 serves as the overall load-bearing base, on which the vest fabric 10 is placed. A reflective strip 11 is placed in a designated area on the upper side of the vest fabric 10, and the side of the reflective strip 11 facing the vest fabric 10 is the adhesive backing layer 1101. A cleaning mechanism is provided next to the support platform 1 for cleaning residual impurities after hot pressing.

[0042] (ii) Inner casing and internal core components

[0043] Please see Figure 1 , Figure 2 The bottom surface of the support platform 1 is embedded with an inner sleeve 2, which includes a contact plate 201. The top surface of the contact plate 201 is flush with the top surface of the support platform 1 and is used to directly support the vest fabric 10 and the reflective strip 11. The inner sleeve 2 is surrounded by an inner cavity 202. The contact plate 201 has multiple vertically penetrating micro-airflow holes 203, which are connected to the inner cavity 202. The multiple micro-airflow holes 203 are distributed in an array, and their distribution range matches the area of ​​the reflective strip 11 covering the vest fabric 10, so as to expel air during hot pressing.

[0044] Please see Figure 1 , Figure 6The bottom surface of the contact plate 201 is provided with a wide conical opening 204, which communicates with the bottom of the micro-airflow hole 203 to facilitate airflow convergence and insertion of the pins 8. A piston plate 6 is movably arranged in the inner cavity 202. Multiple pins 8 are fixed on the top surface of the piston plate 6, and each pin 8 is aligned with one of the micro-airflow holes 203. The vertical length of the pin 8 is greater than the total vertical height of the micro-airflow hole 203 and the wide conical opening 204. After the pin 8 is fully inserted into the micro-airflow hole 203, its top protrudes from the top opening of the micro-airflow hole 203, which can push out any residual colloid inside the hole. A magnetic block 7 is embedded in the bottom surface of the piston plate 6, which is used to cooperate with the electromagnetic module 5 to achieve the positioning and movement of the piston plate 6.

[0045] (III) Drive and Detection Components

[0046] Please see Figure 1 , Figure 5 An outer frame 3 is fixed to the outer periphery of the inner sleeve 2. A bottom crossbeam 301 is fixed to the bottom side of the outer frame 3. A first lifting device 4 and a distance detection module 9 are fixed to the top surface of the bottom crossbeam 301. The distance detection module 9 is used to vertically detect the distance to the bottom surface of the piston plate 6. A drive shaft 401 is provided at the output end of the first lifting device 4. An electromagnetic module 5 is fixed to the top of the drive shaft 401. The electromagnetic module 5 can be magnetically driven to connect to the magnetic block 7. The first lifting device 4 drives the electromagnetic module 5 to rise and fall, thereby driving the piston plate 6 to rise and fall in the inner cavity 202.

[0047] A lifting drive device is configured above the hot press plate 14 to drive the hot press plate 14 to rise and fall vertically, thereby pressurizing and heating the reflective strip 11.

[0048] (iv) Air extraction and air path components

[0049] Please see Figure 2 , Figure 3 The inner sleeve 2 is connected to the side of the air extraction pipe 12, which is connected to the vacuum pump 13. The horizontal position of the opening of the air extraction pipe 12 and the inner cavity 202 is lower than the bottom surface of the support platform 1. When the piston plate 6 is at its lowest stroke position, its top surface is lower than the opening of the opening, ensuring stable airflow during air extraction. The air between the reflective strip 11 and the vest fabric 10 can be discharged by the vacuum pump 13, avoiding the generation of air bubbles.

[0050] (v) Specific structure of the cleaning organization

[0051] Please see Figure 5 , Figure 6 , Figure 7The cleaning mechanism includes a brush roller 15, an upper support 16, a micro motor 17, a horizontal telescopic device 18, and a horizontal shaft 19. The brush roller 15 is mounted inside the upper support 16 via bearings. The micro motor 17 is located beside the upper support 16 and drives the brush roller 15 to rotate. The horizontal telescopic device 18 has a horizontal shaft 19 at its output end, which is fixedly connected to the upper support 16. The horizontal telescopic device 18 can drive the brush roller 15 to move horizontally, causing the brush roller 15 to make frictional contact with the top surface of the contact plate 201 and the tip of the pin 8 to remove residual impurities.

[0052] Example 2: This invention designs a hot-pressing process for reflective strips on reflective vests. The specific process method is as follows:

[0053] Step 1: Place the material to be processed: The vest fabric 10 is conveyed to the support platform 1 so that the area of ​​the fabric to be hot-pressed corresponds to the area directly above the contact plate 201. Then, the reflective strip 11 (the side with the adhesive layer 1101 facing the vest fabric 10) is placed in the designated hot-pressing area of ​​the fabric, ensuring that the coverage of the reflective strip 11 is compatible with the distribution range of the micro airflow holes 203 on the contact plate 201.

[0054] Step 2: Calibrate the initial position of the piston plate: Activate the distance detection module 9 to detect the distance from the bottom surface of the piston plate 6. If the detected value is greater than the system's preset minimum reference value L... x1 When the electromagnetic module 5 is energized and attracts the magnetic block 7, the first lifting device 4 drives the piston plate 6 to move downward until the distance detection module 9 detects that the distance between the piston plate 6 and the magnetic block 7 reaches L. x1 Complete the initial positioning.

[0055] Step 3: Hot press plate starts and presses down: The hot press plate 14 moves downward, contacts and presses down on the reflective strip 11, and at the same time begins to heat the backing layer 1101 of the reflective strip 11. The hot pressing process is divided into a preheating and degassing stage and a melting and bonding stage, which are carried out in sequence.

[0056] Step 4: Perform preheating and exhaust operation: During the preheating and exhaust stage, the temperature is set to 80-120℃ and the pressure to 0.1-0.3MPa, lasting for 3-5 seconds. During this stage, the electromagnetic module 5 remains energized, and the magnetic block 7 attracts the piston plate 6 to maintain it at the lowest point of its vertical stroke.

[0057] Vacuum pump 13 evacuates air from inner cavity 202 through evacuation pipe 12, with evacuation power according to P. x =λ・P max +P0 runs (λ is the running reference coefficient, initially λ=1, gradually decreasing to 0 as time increases, P... max (P0 is the maximum suction power, and P0 is the minimum suction power), to promote the expulsion of air between the reflective strip 11 and the fabric.

[0058] Step 5: Switching to the Melt Bonding Stage: After the preheating and degassing stage, the melt bonding stage begins. The temperature is adjusted to 120-180℃ (adapted to the type of adhesive layer), and the pressure is set to 0.5-0.8MPa for 2-15 seconds. At this time, λ=0, and the vacuum pump 13 operates at power P0, causing the backing adhesive layer 1101 to melt rapidly to achieve a firm bond with the fabric.

[0059] Step Six: Monitoring the Piston Plate Status During the Melting Stage: During the melting and bonding stage, the electromagnetic module 5 is de-energized and no longer attracts the magnetic block 7. If the distance detection module 9 detects that the piston plate 6 has moved upward (e.g., ...), the piston plate 6 will move upward. Figure 4 This indicates that the micro airflow holes 203 may be blocked. At this time, the vacuum pump 13 stops pumping air and the piston plate 6 moves upward to slow down the penetration of the backing layer 1101 into the micro airflow holes 203.

[0060] During the melt bonding stage, the pumping power of the vacuum pump has been reduced to the minimum P0. However, possibly due to the melting and penetration of the adhesive layer 1101 into the micro-air pores 203, the micro-air pores 203 begin to become blocked, resulting in a decrease in the air pressure in the inner cavity 202, which causes the piston plate 6 to move upward. By moving the piston plate 6 upward, the extent to which the molten adhesive penetrates into the micro-air pores 203 is slowed down.

[0061] Step 7: Determine whether to activate the cleaning mode: If the piston plate 6 moves upward during the melting and bonding stage after hot pressing, activate the cleaning mode; otherwise, proceed directly to the next processing cycle.

[0062] Step 8: Perform cleaning preparation operations: In cleaning mode, the electromagnetic module 5 is energized to attract the magnetic block 7, and the first lifter 4 drives the piston plate 6 to rise to the top of the inner cavity 202, so that the distance to the piston plate 6 detected by the distance detection module 9 reaches the system's preset maximum reference value L. x2 At this point, the pin 8 is fully inserted into the micro airflow hole 203 and its top protrudes from the top opening of the micro airflow hole 203, pushing out the solidified colloid remaining in the micro airflow hole 203.

[0063] Step 9: Cleaning the contact plate and pins: The horizontal telescopic device 18 drives the brush roller 15 to move horizontally, so that the brush roller 15 rubs against the top surface of the contact plate 201 and the top of the pin 8 to remove residual impurities. After cleaning, the horizontal telescopic device 18 drives the brush roller 15 back to the initial position.

[0064] Step 10, Piston Plate Reset: The first lifter 4 drives the piston plate 6 and pin 8 to move downwards until the distance detection module 9 detects that the distance of the piston plate 6 has returned to L. x1 After cleaning, reset the device to prepare for the next hot pressing operation.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reflective vest reflective strip hot-pressing module, comprising a support platform (1), a vest fabric (10) placed above the support platform (1), a reflective strip (11) placed in a designated area on the upper side of the vest fabric (10), and a hot-pressing plate (14) for hot-pressing the reflective strip (11), characterized in that: The bottom surface of the support platform (1) is fitted with an inner sleeve (2), which includes a contact plate (201). The top surface of the contact plate (201) is flush with the top surface of the support platform (1). The inner sleeve (2) has an inner cavity (202) around its inner circumference. The contact plate (201) has multiple vertically penetrating micro airflow holes (203). The micro airflow holes (203) are connected to the inner cavity (202). The multiple micro airflow holes (203) are distributed in an array and their distribution range matches the area of ​​the reflective strip (11) covering the vest fabric (10). A piston plate (6) is movably arranged in the inner cavity (202). A plurality of pins (8) that cooperate with the micro airflow holes (203) are fixed on the top surface of the piston plate (6). A magnetic block (7) is embedded in the bottom surface of the piston plate (6). A wide conical opening (204) communicating with the bottom of the micro airflow holes (203) is provided on the bottom surface of the contact plate (201). A plurality of micro airflow holes (203) and a plurality of pins (8) are aligned and cooperated one by one. The vertical length of the pins (8) is greater than the total vertical height of the micro airflow holes (203) and the wide conical opening (204). The inner sleeve (2) is fixedly equipped with a first lifting device (4) and a distance detection module (9) for vertically upward detection of the bottom surface of the piston plate (6). The first elevator (4) is driven and connected to an electromagnetic module (5) above, and the electromagnetic module (5) is magnetically driven and connected to a magnetic block (7). The inner sleeve (2) is connected to a suction pipe (12) that communicates with its inner cavity (202) on the side. The suction pipe (12) is connected to a vacuum pump (13). The horizontal position of the opening of the suction pipe (12) and the inner cavity (202) is lower than the bottom surface of the support platform (1). When the piston plate (6) is at its lowest stroke position, the top surface of the piston plate (6) is horizontally lower than the opening connecting the suction pipe (12) and the inner cavity (202); A cleaning mechanism is also provided on the side of the support platform (1). The cleaning mechanism includes a brush roller (15) that rubs against the top surface of the contact plate (201) and a horizontal telescopic device (18) that drives the brush roller (15) to move horizontally. The cleaning mechanism also includes an upper bracket (16). The brush roller (15) is installed in the inner circumference of the upper bracket (16) through a bearing. A micro motor (17) for driving the brush roller (15) to rotate is provided on the side of the upper bracket (16). A horizontal shaft (19) is provided at the output end of the horizontal telescopic device (18). The horizontal shaft (19) is fixedly connected to the upper bracket (16).

2. The reflective vest reflective strip hot-pressing module according to claim 1, characterized in that: Above the hot press plate (14) is a lifting drive device for driving the hot press plate (14) to move vertically up and down.

3. The reflective vest reflective strip hot-pressing module according to claim 1, characterized in that: The inner sleeve (2) is fixedly configured with an outer frame (3), and the bottom crossbeam (301) is fixedly installed on the bottom side of the outer frame (3). The first lifting device (4) and the distance detection module (9) are fixedly installed on the top surface of the bottom crossbeam (301). The first lifting device (4) has a drive shaft (401) at its output end, and the electromagnetic module (5) is fixedly installed on the top of the drive shaft (401).

4. A hot-pressing process for the reflective strip hot-pressing module of the reflective vest according to any one of claims 1 to 3, characterized in that, Includes the following: S1. After placing the vest fabric (10) and reflective strip (11), start the distance detection module (9) to detect the distance to the bottom surface of the piston plate (6). If the detected value is greater than the system's preset minimum reference value L, x1 The electromagnetic module (5) is energized and attracts the magnetic block (7). The first lifter (4) drives the piston plate (6) to move down until the distance detection module (9) detects that the distance between the piston plate (6) and the piston plate (6) reaches L. x1 Complete initial positioning; S2. The hot press plate (14) moves downward, contacts and presses down on the reflective strip (11), and at the same time begins to heat the backing layer (1101) of the reflective strip (11). The hot pressing process is divided into a preheating and degassing stage and a melting and bonding stage in sequence. S3. During the preheating and exhaust stage, the hot press plate (14) is set to a low heating temperature T. d and low pressure P d A state that lasts for a certain period of time; During this stage, the electromagnetic module (5) remains energized, attracting the magnetic block (7) to keep the piston plate (6) at the lowest point of the vertical stroke; The vacuum pump (13) evacuates air from the inner cavity (202) through the evacuation pipe (12), and the evacuation power is calculated according to P. x =λ・P max +P0 runs, where λ is the running reference coefficient, initially λ=1, gradually decreasing to 0 as time increases, P max P0 is the maximum pumping power, and P1 is the minimum pumping power. S4. After the preheating and venting stage is completed, the melting and bonding stage begins, and the hot press plate (14) is set to a high heating temperature T. g and high pressure P g A state that lasts for a certain period of time, where T d <T g P d <P g ; At this time, λ=0, and the vacuum pump (13) operates at power P0; S5. During the melting and bonding stage, the electromagnetic module (5) is de-energized, and the magnetic attraction between it and the magnetic block (7) is broken. If the distance detection module (9) detects that the piston plate (6) moves upward, the vacuum pump (13) stops pumping air; S6. After hot pressing is completed, if the piston plate (6) moves upward during the melting and bonding stage, proceed to S7 and S8; otherwise, proceed directly to S9 and continue to the next processing cycle. S7. In the cleaning mode, the electromagnetic module (5) is energized to attract the magnetic block (7), and the first lifter (4) drives the piston plate (6) to rise to the top of the inner cavity (202). At this time, the pin (8) is fully inserted into the micro airflow hole (203) and the top protrudes out of the opening, pushing out the solidified colloid remaining in the hole. S8. The horizontal telescopic device (18) drives the brush roller (15) to move horizontally, so that the brush roller (15) rubs against the top surface of the contact plate (201) and the top of the pin (8) to remove residual impurities. After cleaning, the horizontal telescopic device (18) drives the brush roller (15) back to the initial position. S9. The first lifter (4) drives the piston plate (6) and pin (8) to move down until the distance detection module (9) detects that the distance of the piston plate (6) has returned to L. x1 After cleaning, reset the device to prepare for the next hot pressing operation.

Images