A membrane heat sealing device and its heat sealing process

Abstract

This invention discloses a diaphragm heat sealing equipment and its heat sealing process, including an external frame, a transverse heat sealing mechanism, and a longitudinal heat sealing mechanism. The transverse heat sealing mechanism includes a transverse changing motor, a first connecting shaft, a transverse heat sealing mechanism base plate, and a profile frame, as well as a transverse heat sealing cylinder, a transverse welding machine, and a transverse pressing cylinder. The longitudinal heat sealing mechanism is located on one side of the transverse heat sealing mechanism and includes fixed seats at both ends. A large guide shaft is installed between the fixed seats at both ends, and a longitudinal heat sealing structure base plate is slidably connected to the large guide shaft. A longitudinal heat sealing cylinder, a diaphragm platform, and a longitudinal welding machine are installed on the longitudinal heat sealing structure base plate. This invention integrates the welding technology of the central tube guide cloth into the automated production equipment of diaphragm elements, achieving automated production, reducing manual intervention, improving the safety factor, reducing the difficulty of changing shapes, and ensuring that the heat-sealed diaphragm is firm and not easily detached, thereby improving the yield and efficiency and reducing the cost incurred in actual operation.

Description

Technical Field

[0001] This invention relates to a membrane heat sealing process, and more particularly to a membrane heat sealing device and its heat sealing process. Background Technology

[0002] In this field, existing membrane elements produced by diaphragm winding have some common defects, such as adhesive detachment between membrane layers and water leakage affecting the service life of the membrane element itself. These defects are usually caused by quality problems during the heat sealing stage of the membrane. In addition, existing heat sealing methods generally use heated copper strips for pressing, which results in high energy consumption and the exposed copper strips posing a risk of burns to operators.

[0003] To address the processing issues arising from the aforementioned copper bar heating methods, ultrasonic heat sealing equipment has been adopted as a workaround. However, ultrasonic heat sealing equipment is not without its flaws, exhibiting challenges such as difficulty in design changes and uneven contact of the welding head. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a membrane heat sealing device and its heat sealing process.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a film heat sealing device, including an external frame and a transverse heat sealing mechanism and a longitudinal heat sealing mechanism configured on the frame for heat sealing the film;

[0006] The transverse heat sealing mechanism includes a transverse shape changing motor, a first connecting shaft driven by the transverse shape changing motor, a transverse heat sealing mechanism base plate that is driven by the first connecting shaft to slide and change the heat sealing position, and a profile frame connected to the transverse heat sealing mechanism base plate. The frame area of ​​the profile frame includes a transverse heat sealing cylinder, a transverse welding machine, and a transverse pressing cylinder.

[0007] The longitudinal heat sealing mechanism is located on one side of the transverse heat sealing mechanism. The longitudinal heat sealing mechanism includes fixed seats at both ends, and a large guide shaft is installed between the fixed seats at both ends. A longitudinal heat sealing structure base plate is slidably connected on the large guide shaft. A longitudinal heat sealing cylinder, a diaphragm platform, and a longitudinal welding machine are installed on the longitudinal heat sealing structure base plate.

[0008] Furthermore, the transverse switching motor is fixed to the external frame by a mounting plate. The transverse switching motor 1 is driven by a first synchronous belt and connected to a first synchronous pulley. There are several first synchronous pulleys. The first synchronous pulleys are installed on a first connecting shaft. The two ends of the first connecting shaft are equipped with first bearing seats with embedded bearings.

[0009] Furthermore, there are two horizontal heat sealing mechanism base plates, which are spaced apart. The lower side of the horizontal heat sealing mechanism base plate is connected to a second synchronous belt that is fastened by a synchronous belt pressure plate. The two ends of the second synchronous belt are tensioned and connected to the first synchronous wheel near the first bearing seat. The bottom of the horizontal heat sealing mechanism base plate is also connected to a slider, which slides and engages with a slide rail fixed on the frame.

[0010] Furthermore, the two ends of the profile frame are respectively installed on the bottom plates of the transverse heat sealing mechanism on both sides. A drive motor is also installed in the frame area of ​​the profile frame. The drive motor drives the second synchronous wheel located at the bottom of the profile frame and simultaneously drives the third synchronous belt wound around the second synchronous wheel. There are two second synchronous wheels. The two second synchronous wheels together tension the third synchronous belt. The second synchronous wheel, which is not directly driven by the drive motor, is connected to the second connecting shaft located in the frame area of ​​the profile frame. The free end of the second connecting shaft is connected to the second bearing seat with embedded bearing.

[0011] Furthermore, the top of the profile frame is equipped with a mounting plate that is connected to the top of the profile frame by a top slider and a top slide rail. A secondary connecting plate is installed on the other side of the mounting plate. The secondary connecting plate is also connected to the top of the profile frame by a top slider and a top slide rail. A fourth synchronous belt is also installed on the secondary connecting plate.

[0012] Furthermore, the transverse heat-sealing cylinder is mounted downwards on the lower side of the mounting plate via a fixing plate, so that the transverse heat-sealing cylinder is located in the frame area of ​​the profile frame in a suspended manner, and the output end of the transverse heat-sealing cylinder is equipped with a roller that is movably connected via a roller plate.

[0013] Furthermore, the transverse welding machine is mounted on a low mounting plate that moves laterally at the bottom via a second connecting shaft;

[0014] The transverse clamping cylinder is installed above the waist of the profile frame through the plate. A clamping platform is provided below the transverse clamping cylinder. There are two transverse clamping cylinders, which are arranged symmetrically to each other.

[0015] Furthermore, there are two longitudinal heat-sealing mechanism base plates, which are spaced apart from each other and are movably mounted on the frame through longitudinal heat-sealing mechanism sliders and longitudinal heat-sealing mechanism slide rails. The two longitudinal heat-sealing mechanism base plates are located between the fixed seats on both sides, and the large guide shaft is implemented by means of linear bearings that pass through and are interference-fitted at the free ends of the two longitudinal heat-sealing mechanism base plates.

[0016] Furthermore, both longitudinal welding machines are mounted on the base plates of the two longitudinal heat sealing mechanisms, and a small guide shaft is connected between the two longitudinal welding machines through an external bearing assembly;

[0017] The longitudinal heat-sealing cylinder is supported by the connecting plate, and a second roller is connected to the lower part of the longitudinal heat-sealing cylinder.

[0018] The diaphragm platform is fixed on the support frame;

[0019] The longitudinal heat sealing mechanism also includes pointers and scales.

[0020] A heat sealing process for a diaphragm heat sealing device, the process is as follows:

[0021] The first connecting shaft is driven by the transverse changing motor to move the transverse heat sealing mechanism base plate longitudinally, so that the transverse heat sealing mechanism can move longitudinally. According to the actual model size of the heat sealing film, it is moved to the designated heat sealing position. The position of the longitudinal heat sealing mechanism base plate is manually adjusted, and the longitudinal heat sealing position of the film is confirmed by pointers and rulers.

[0022] When the diaphragm moves to the longitudinal welding position, the longitudinal heat sealing cylinder is activated, controlling the second roller to press down and contact the diaphragm, thereby making the diaphragm adhere to the longitudinal welding machine on the diaphragm platform. After that, the longitudinal welding machine starts and performs longitudinal heat sealing on the diaphragm. The diaphragm continues to move to the side of the transverse heat sealing mechanism for full heat sealing. During this process, the second roller rolls on the diaphragm to ensure that the position where it adheres to the diaphragm is fully heat sealed.

[0023] When the diaphragm reaches the transverse heat-sealing position, the diaphragm stops moving, the longitudinal welding machine is turned off, and the two transverse pressing cylinders are activated to press the diaphragm down and cooperate with their respective pressing platforms to fasten the diaphragm together. The transverse heat-sealing cylinders are activated to control the rollers to press down and contact the diaphragm, thereby making the diaphragm adhere to the transverse welding machine.

[0024] The drive motor starts, and through the second synchronous pulley and the third synchronous belt, it drives the transverse welding machine and the transverse heat sealing cylinder to move laterally, that is, to begin transverse heat sealing of the diaphragm. The two rollers roll on the diaphragm, so that the diaphragm and the rollers are completely heat sealed at the contact point.

[0025] After the transverse heat sealing is complete, all parts are closed and returned to their positions. The diaphragm moves again, and the longitudinal welding machine is restarted to heat seal the diaphragm again.

[0026] Repeat the above steps until the entire roll of film is heat-sealed.

[0027] This invention discloses a diaphragm heat sealing equipment and its heat sealing process, which integrates the central tube guide cloth welding technology into the automated production equipment of diaphragm elements, achieving automated production, reducing manual intervention, improving the safety factor, reducing the difficulty of changeover, and making the heat-sealed diaphragm firm and not easy to fall off, thereby improving the yield and efficiency and reducing the cost incurred in actual work. Attached Figure Description

[0028] Figure 1 This is a front view of the transverse heat-sealing mechanism of the present invention.

[0029] Figure 2 This is a top view of the present invention.

[0030] Figure 3 This is a front view of the longitudinal heat-sealing mechanism of the present invention.

[0031] In the diagram: 1. Lateral changing motor; 2. First synchronous pulley; 3. First synchronous belt; 4. First connecting shaft; 5. First bearing housing; 6. Second synchronous belt; 7. Synchronous belt pressure plate; 8. Lateral heat sealing mechanism base plate; 9. Slide rail; 10. Slider; 11. Profile frame; 12. Drive motor; 13. Second synchronous pulley; 14. Third synchronous belt; 15. Second connecting shaft; 16. Second bearing housing; 17. Fourth synchronous belt; 18. Mounting plate; 19. Top slider; 20. 21. Top slide rail; 22. Transverse heat sealing cylinder; 23. Roller; 24. Transverse welding machine; 25. Transverse clamping cylinder; 26. Clamping platform; 27. Longitudinal heat sealing mechanism base plate; 28. Linear bearing; 29. ​​Longitudinal heat sealing mechanism slider; 30. Longitudinal heat sealing mechanism slide rail; 31. Large guide shaft; 32. Fixed seat; 33. Small guide shaft; 34. Longitudinal heat sealing cylinder; 35. Second roller; 36. Diaphragm platform; 37. Longitudinal welding machine; 38. Pointer; 39. Scale. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-3 As shown in the figure, this embodiment relates to a membrane heat sealing device and its heat sealing process.

[0034] The membrane heat sealing equipment includes an external frame and a transverse heat sealing mechanism and a longitudinal heat sealing mechanism configured on the frame to heat seal the membrane.

[0035] In this embodiment, the transverse heat sealing mechanism includes a transverse profile changing motor 1, a first connecting shaft 4 driven by the transverse profile changing motor 1, a transverse heat sealing mechanism base plate 8 that is driven by the first connecting shaft 4 to slide and change the heat sealing position, and a profile frame 11 connected to the transverse heat sealing mechanism base plate 8. The frame area of ​​the profile frame 11 includes a transverse heat sealing cylinder 21, a transverse welding machine 23, and a transverse pressing cylinder 24.

[0036] Preferably, the transverse switching motor 1 is fixed to an external frame by a mounting plate. The transverse switching motor 1 is driven by a first synchronous belt 3 and connected to a first synchronous pulley 2. There are several first synchronous pulleys 2. The first synchronous pulleys 2 are installed on a first connecting shaft 4. The two ends of the first connecting shaft 4 are equipped with first bearing seats 5 with embedded bearings. Therefore, the step-by-step transmission driven by the transverse switching motor 1 is something that those skilled in the art can understand and master.

[0037] Preferably, there are two transverse heat-sealing mechanism base plates 8, which are spaced apart. The lower side of each transverse heat-sealing mechanism base plate 8 is connected to a second synchronous belt 6 fastened by a synchronous belt pressure plate 7. The two ends of the second synchronous belt 6 are tensioned and connected to the first synchronous wheel 2 near the first bearing seat 5. The bottom of the transverse heat-sealing mechanism base plate 8 is also connected to a slider 10, which slides on a slide rail 9 fixed on the frame. With the above configuration, the transverse heat-sealing mechanism base plate 8 can slide under the action of external force. In this embodiment, the sliding direction is longitudinal movement. Through the transmission of the second synchronous belt 6 and its preceding components, the transverse heat-sealing mechanism base plate 8 is given the precondition to accept external force. Therefore, the second synchronous belt 6 can pull the transverse heat-sealing mechanism base plate 8 to change its position.

[0038] Preferably, the two ends of the profile frame 11 are respectively mounted on the horizontal heat sealing mechanism base plate 8 on both sides. A drive motor 12 is also installed in the frame area of ​​the profile frame 11. The drive motor 12 drives the second synchronous wheel 13 located at the bottom of the profile frame 11 and simultaneously drives the third synchronous belt 14 wound around the second synchronous wheel 13. There are two second synchronous wheels 13. The two second synchronous wheels 13 together tension the third synchronous belt 14. The second synchronous wheel 13, which is not directly driven by the drive motor 12, is connected to a second connecting shaft 15 located in the frame area of ​​the profile frame 11. The free end of the second connecting shaft 15 is connected to a second bearing seat 16 with an embedded bearing.

[0039] Preferably, the top of the profile frame 11 is provided with a mounting plate 18 that is movably connected by a top slider 19 and a top slide rail 20. A secondary connecting plate is installed on the other side of the mounting plate 18. The secondary connecting plate is also movably connected to the top of the profile frame 11 by the top slider 19 and the top slide rail 20. A fourth synchronous belt 17 is also installed on the secondary connecting plate. Therefore, when the second connecting shaft 15 rotates, the secondary connecting plate can be moved laterally by the fourth synchronous belt 17, and the lateral heat sealing cylinder 21 connected to the secondary connecting plate can change its position accordingly.

[0040] Furthermore, the transverse heat-sealing cylinder 21 is mounted downwards on the lower side of the mounting plate 18 via a fixing plate, so that the transverse heat-sealing cylinder 21 is suspended in the frame area of ​​the profile frame 11, and the output end of the transverse heat-sealing cylinder 21 is equipped with a roller 22 that is movably connected via a roller plate.

[0041] Preferably, the horizontal welding machine 23 is mounted on a low mounting plate that moves laterally at the bottom via the second connecting shaft 15, meaning that the position of the horizontal welding machine 23 changes with the low mounting plate; the horizontal clamping cylinder 24 is mounted above the waist of the profile frame 11 via a plate, and a clamping platform 25 is provided below the horizontal clamping cylinder 24. There are two horizontal clamping cylinders 24, and the two horizontal clamping cylinders 24 are arranged symmetrically to each other.

[0042] The longitudinal heat sealing mechanism is located on one side of the transverse heat sealing mechanism. The longitudinal heat sealing mechanism includes fixed seats 31 at both ends. A large guide shaft 30 is installed between the fixed seats 31 at both ends. A longitudinal heat sealing structure base plate 26 is slidably connected on the large guide shaft 30. A longitudinal heat sealing cylinder 33, a diaphragm platform 35, and a longitudinal welding machine 36 are installed on the longitudinal heat sealing structure base plate 26.

[0043] Preferably, there are two longitudinal heat sealing mechanism base plates 26. The two longitudinal heat sealing mechanism base plates 26 are spaced apart from each other and are movably mounted on the frame through the longitudinal heat sealing mechanism slider 28 and the longitudinal heat sealing mechanism slide rail 29. The two longitudinal heat sealing mechanism base plates 26 are located between the fixed seats 31 on both sides. The large guide shaft 30 is implemented by passing through and interfering with the linear bearing 27 located at the free end of the two longitudinal heat sealing mechanism base plates 26.

[0044] Both longitudinal heat-sealing mechanism base plates 26 are equipped with longitudinal welding machines 36. The two longitudinal welding machines 36 are connected by an external bearing assembly and a small guide shaft 32. The longitudinal heat-sealing cylinder 33 is supported by a connecting plate. A second roller 34 is driven and connected below the longitudinal heat-sealing cylinder 33. The diaphragm platform 35 is fixed on the frame. The longitudinal heat-sealing mechanism also includes a pointer 37 and a scale 38. It should be noted that the pointer 37 and the scale 38 are existing technologies, so their setting and usage are not technical features that need to be protected in this embodiment.

[0045] The heat sealing process of the membrane heat sealing equipment in this embodiment is as follows:

[0046] The horizontal heat sealing mechanism base plate 8 is moved longitudinally by the horizontal changing motor 1 to drive the first connecting shaft 4 so that the horizontal heat sealing mechanism can move longitudinally. According to the actual model size of the heat sealing film, it is moved to the designated heat sealing position. The position of the longitudinal heat sealing mechanism base plate 26 is manually adjusted, and the longitudinal heat sealing position of the film is confirmed by the pointer 37 and the scale 38.

[0047] When the diaphragm moves to the longitudinal welding position, the longitudinal heat sealing cylinder 33 is activated, controlling the second roller 34 to press down and contact the diaphragm, thereby causing the diaphragm to adhere to the longitudinal welding machine 36 on the diaphragm platform 35. After that, the longitudinal welding machine 36 is started and performs longitudinal heat sealing on the diaphragm. The diaphragm continues to move to the side of the transverse heat sealing mechanism for full heat sealing. During this process, the second roller 34 rolls on the diaphragm to ensure that the position where it adheres to the diaphragm is fully heat sealed.

[0048] When the diaphragm reaches the transverse heat-sealing position, the diaphragm stops moving, the longitudinal welding machine 36 is turned off, the two transverse pressing cylinders 24 are activated to press the diaphragm down and cooperate with their respective pressing platforms 25 to jointly fasten the diaphragm, the transverse heat-sealing cylinder 21 is activated to control the roller 22 to press down and contact the diaphragm, thereby making the diaphragm adhere to the transverse welding machine 23.

[0049] The drive motor 12 starts, and through the second synchronous pulley 13 and the third synchronous belt 14, it drives the transverse welding machine 23 and the transverse heat sealing cylinder 21 to move laterally, that is, to begin transverse heat sealing of the diaphragm. The two rollers 22 roll on the diaphragm, so that the diaphragm and the rollers 22 are completely heat sealed at the contact position.

[0050] After the transverse heat sealing is complete, all parts are closed and returned to their positions. The diaphragm moves again, and the longitudinal welding machine 36 is restarted to heat seal the diaphragm again.

[0051] Repeat the above steps until the entire roll of film is heat-sealed.

[0052] Thus, the membrane heat sealing equipment and its heat sealing process disclosed in this invention integrate the central tube guide cloth welding technology into the automated production equipment of membrane elements, achieving automated production, reducing manual intervention, improving the safety factor, reducing the difficulty of changeover, and making the heat-sealed membrane firm and not easy to fall off, thereby improving the yield and efficiency and reducing the cost incurred in actual work.

[0053] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. A membrane heat sealing device, characterized in that: It includes an external frame and a transverse heat sealing mechanism and a longitudinal heat sealing mechanism configured on the frame to heat seal the film; The transverse heat sealing mechanism includes a transverse shape-changing motor (1), a first connecting shaft (4) driven by the transverse shape-changing motor (1), a transverse heat sealing mechanism base plate (8) that is driven by the first connecting shaft (4) to slide and change the heat sealing position, and a profile frame (11) connected to the transverse heat sealing mechanism base plate (8). The frame area of ​​the profile frame (11) includes a transverse heat sealing cylinder (21), a transverse welding machine (23), and a transverse pressing cylinder (24). The transverse shape-changing motor (1) is driven by a first synchronous pulley (2) connected by a first synchronous belt (3). The first synchronous pulley (2) is installed on the first connecting shaft (4). The two ends of the first connecting shaft (4) are equipped with first bearing seats (5) with embedded bearings. There are two horizontal heat sealing mechanism base plates (8), which are spaced apart. The lower side of the horizontal heat sealing mechanism base plate (8) is connected to a second synchronous belt (6) fastened by a synchronous belt pressure plate (7). The two ends of the second synchronous belt (6) are tensioned and connected to the first synchronous wheel (2) near the first bearing seat (5). The bottom of the horizontal heat sealing mechanism base plate (8) is also connected to a slider (10), which slides on the slide rail (9) fixed on the frame. A drive motor (12) is also installed in the frame area of ​​the profile frame (11). The drive motor (12) drives the second synchronous wheel (13) located at the bottom of the profile frame (11) and simultaneously drives the third synchronous belt (14) wound around the second synchronous wheel (13) to rotate. The second synchronous wheel (13) not directly driven by the drive motor (12) is connected to the second connecting shaft (15) located in the frame area of ​​the profile frame (11). The free end of the second connecting shaft (15) is connected to the second bearing seat (16) with embedded bearing. The transverse heat sealing cylinder (21) is mounted downward on the lower side of the mounting plate (18) via a fixing plate. The transverse heat sealing cylinder (21) is suspended in the frame area of ​​the profile frame (11). The output end of the transverse heat sealing cylinder (21) is equipped with a roller (22) that is movably connected via a roller plate. The transverse welding machine (23) is mounted on a low mounting plate that moves laterally at the bottom via a second connecting shaft (15); The transverse clamping cylinder (24) is mounted on the profile frame (11) above the waist via a plate. A clamping platform (25) is fitted below the transverse clamping cylinder (24). There are two transverse clamping cylinders (24), which are arranged symmetrically to each other. The longitudinal heat sealing mechanism is located on one side of the transverse heat sealing mechanism. The longitudinal heat sealing mechanism includes fixed seats (31) at both ends. A large guide shaft (30) is installed between the fixed seats (31) at both ends. A longitudinal heat sealing structure base plate (26) is slidably connected on the large guide shaft (30). A longitudinal heat sealing cylinder (33), a diaphragm platform (35), and a longitudinal welding machine (36) are installed on the longitudinal heat sealing structure base plate (26). Both of the longitudinal heat sealing mechanism base plates (26) are equipped with longitudinal welding machines (36), and the two longitudinal welding machines (36) are connected by a small guide shaft (32) through an external bearing assembly. The longitudinal heat-sealing cylinder (33) is supported by the connecting plate, and a second roller (34) is driven and connected below the longitudinal heat-sealing cylinder (33); the diaphragm platform (35) is fixed on the frame; the longitudinal heat-sealing mechanism also includes a pointer (37) and a scale (38).

2. The membrane heat sealing device according to claim 1, characterized in that: The transverse switching motor (1) is fixed to the external frame by a mounting plate, and there are several first synchronous pulleys (2).

3. The membrane heat sealing device according to claim 1, characterized in that: The two ends of the profile frame (11) are respectively installed on the bottom plate (8) of the transverse heat sealing mechanism on both sides. There are two second synchronous wheels (13), and the two second synchronous wheels (13) together tension the third synchronous belt (14).

4. The membrane heat sealing device according to claim 1, characterized in that: The top of the profile frame (11) is provided with a mounting plate (18) which is movably connected by a top slider (19) and a top slide rail (20). A secondary connecting plate is installed on the other side of the mounting plate (18). The secondary connecting plate is also movably connected to the top of the profile frame (11) by a top slider (19) and a top slide rail (20). A fourth synchronous belt (17) is also installed on the secondary connecting plate.

5. The membrane heat sealing device according to claim 1, characterized in that: The number of the longitudinal heat sealing mechanism base plates (26) is two. The two longitudinal heat sealing mechanism base plates (26) are spaced apart from each other and are movably mounted on the frame through the longitudinal heat sealing mechanism slider (28) and the longitudinal heat sealing mechanism slide rail (29). The two longitudinal heat sealing mechanism base plates (26) are located between the fixed seats (31) on both sides. The large guide shaft (30) is implemented by passing through and interfering with the linear bearing (27) located at the free end of the two longitudinal heat sealing mechanism base plates (26).

6. A heat sealing process for a membrane heat sealing device as described in any one of claims 1-5, characterized in that, The process is as follows: The first connecting shaft (4) is driven by the transverse type-changing motor (1) to move the transverse heat sealing mechanism base plate (8) longitudinally so that the transverse heat sealing mechanism can move longitudinally. According to the actual model size of the heat sealing film, it is moved to the designated heat sealing position. The position of the longitudinal heat sealing mechanism base plate (26) is manually adjusted, and the longitudinal heat sealing position of the film is confirmed by the pointer (37) and the scale (38). When the diaphragm moves to the longitudinal welding position, the longitudinal heat sealing cylinder (33) is activated, controlling the second roller (34) to press down and contact the diaphragm, thereby making the diaphragm adhere to the longitudinal welding machine (36) on the diaphragm platform (35). After that, the longitudinal welding machine (36) is started and performs longitudinal heat sealing on the diaphragm. The diaphragm continues to move to the side of the transverse heat sealing mechanism for full heat sealing. During this process, the second roller (34) rolls on the diaphragm to ensure that the position where it adheres to the diaphragm is fully heat sealed. When the diaphragm reaches the transverse heat-sealing position, the diaphragm stops moving, the longitudinal welding machine (36) is turned off, and the two transverse pressing cylinders (24) press the diaphragm down to cooperate with their respective pressing platforms (25) to fasten the diaphragm together. The transverse heat-sealing cylinder (21) controls the roller (22) to press down and contact the diaphragm, thereby making the diaphragm adhere to the transverse welding machine (23). The drive motor (12) starts and drives the transverse welding machine (23) and the transverse heat sealing cylinder (21) to move laterally through the second synchronous pulley (13) and the third synchronous belt (14) in sequence, that is, to start the transverse heat sealing of the diaphragm. The two rollers (22) roll on the diaphragm so that the diaphragm and the rollers (22) are completely heat sealed at the contact position. After the transverse heat sealing is complete, all parts are closed and returned to their positions. The diaphragm moves again, and the longitudinal welding machine (36) is restarted to heat seal the diaphragm again. Repeat the above steps until the entire roll of film is heat-sealed.

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