A diaphragm rewinding device and method

Abstract

The present invention discloses a diaphragm rewinding device, which includes a hot pressing assembly and a tension roller assembly located inside a frame. The tension roller assembly includes two opposite wallboards fixed in the frame. Side plates are arranged at the tops of the two wallboards. Both ends of a main shaft penetrate through the side plates and are rotatably connected to the wallboards. One end of the main shaft is connected to a tension regulator; counterweight rollers and tension idler rollers are arranged on both sides of the main shaft, and both ends of the counterweight rollers and the tension idler rollers are fixed in the side plates; the hot pressing assembly is used for hot pressing and sealing the two sides of the diaphragm; the diaphragm released by a unwinding assembly sequentially passes through the tension idler roller and the hot pressing assembly and then enters a winding assembly; the tension regulator drives the main shaft to rotate to ensure that the inclination angle of the side plate remains a constant value. The present invention regulates the diaphragm unwinding tension through the inclination angle of the side plate in the tension roller assembly, ensures that the diaphragm tensions in the hot pressing assembly are the same, and further ensures that the hot pressing marks are uniform and stable, providing a reference for subsequent gluing.

Description

Technical Field

[0001] The present invention relates to the field of diaphragm processing, and particularly to a diaphragm rewinding device and method. Background Art

[0002] In the water treatment industry, water treatment membranes of different lengths are often required for subsequent production. Therefore, it is necessary to rewind the water treatment membranes according to the specified length. Many manufacturers of high-pressure filter elements do not perform edge sealing on the water treatment membranes during the process of making the water treatment membranes into filter elements. Instead, the high-pressure filter element glue is directly applied to the coating on the surface of the water treatment membrane. During use, the coating at the bonding position of the coating and the glue will fall off due to too high water pressure, especially at the edge areas on both sides of the water treatment membrane, where the coating falls off particularly severely, thus affecting the service life.

[0003] If the water treatment membrane can be hot-pressed and edge-sealed, indentations will be formed on both sides of the water treatment membrane after hot pressing. According to the position of the indentations, the glue is coated inside the indentations, which can ensure that the bonding position of the glue coating is firmly bonded and extend the service life of the filter element. In the existing hot-pressing edge-sealing device, the tension during the unwinding and rewinding process of the water treatment membrane cannot be controlled, thus affecting the quality of the coating on the surface of the rewound water treatment membrane and further affecting the quality of the subsequent produced filter elements. Summary of the Invention

[0004] The present invention aims to solve at least one of the problems in the related art to some extent. For this purpose, the object of the present invention is to provide a diaphragm rewinding device and method. A tension roller assembly is provided before the hot-pressing assembly. The unwinding tension of the diaphragm is regulated by the inclination angle of the side plates in the tension roller assembly to ensure that the tension of the diaphragm entering the hot-pressing assembly is the same, thereby ensuring that the hot-pressing marks are uniform and stable and providing a reference for subsequent glue coating.

[0005] To achieve the above object, the present application adopts the following technical solution: A diaphragm rewinding device includes a frame, a rewinding assembly and an unwinding assembly located on both sides of the frame. The diaphragm includes a membrane cloth and a coating on the surface of the membrane cloth. The device further includes:

[0006] A hot-pressing assembly and a tension roller assembly located inside the frame. The tension roller assembly includes two opposite wall plates fixed in the frame. Side plates are provided at the tops of the two wall plates. Both ends of a main shaft penetrate through the side plates and are rotatably connected to the wall plates. One end of the main shaft is connected to a tension regulator. Counterweight rollers and tension idler rollers are provided on both sides of the main shaft. Both ends of the counterweight rollers and the tension idler rollers are fixed in the side plates. The hot-pressing assembly is used for hot-pressing and edge-sealing both sides of the diaphragm.

[0007] The diaphragm unwound by the unwinding assembly sequentially passes through the tension idler roller and the hot-pressing assembly and then enters the rewinding assembly. The tension regulator drives the main shaft to rotate to ensure that the inclination of the side plates remains a constant value.

[0008] Further, the tension roller assembly includes an unwinding tension roller assembly and a winding tension roller assembly. The unwinding tension roller assembly is located between the unwinding assembly and the hot pressing assembly, and the winding tension roller assembly is located between the winding assembly and the hot pressing assembly.

[0009] Further, a main traction assembly is further included between the winding tension roller assembly and the hot pressing assembly. The main traction assembly includes a main traction motor, a coupling, and a rubber roller. The main traction motor is connected to one end of the rubber roller through the coupling.

[0010] Further, the tension regulator is a low-friction cylinder. An angle sensor and a low-friction cylinder are provided in the wallboard. The output end of the low-friction cylinder is connected to the main shaft. The angle sensor is used to monitor the inclination angle of the side plate, and the low-friction cylinder is used to drive the main shaft to rotate.

[0011] Further, the hot pressing assembly includes two hot pressing units arranged oppositely and located on both sides of the diaphragm. The hot pressing unit includes a first synchronous belt and a second synchronous belt arranged vertically. A diaphragm channel is formed between the first synchronous belt and the second synchronous belt, and heating blocks are provided in the first synchronous belt and the second synchronous belt;

[0012] First tension wheels and second tension wheels are provided at both ends of the first synchronous belt, and third tension wheels and fourth tension wheels are provided at both ends of the second synchronous belt. The center connection line of the first tension wheel and the second tension wheel is parallel to the movement direction of the diaphragm, and the center connection line of the third tension wheel and the fourth tension wheel is parallel to the movement direction of the diaphragm.

[0013] Further, the heating block includes a first heating block and a second heating block. The first heating block is located inside the first synchronous belt, and the second heating block is located inside the second synchronous belt;

[0014] The ends of the first heating block, the first tension wheel, and the second tension wheel are fixed to the side wall of the lower pressing plate, and the ends of the second heating block, the third tension wheel, and the fourth tension wheel are fixed to the side wall of the fixing plate; the lower pressing plate is slidably connected to the fixing plate.

[0015] Further, the lower pressing plate is fixedly connected to a lower pressing cylinder for driving it to rise and fall; the fixing plate is fixedly connected to an adjusting lead screw, and moving guide rails are provided on both sides at the bottom end of the fixing plate. The extending direction of the moving guide rails is perpendicular to the movement direction of the diaphragm.

[0016] Further, the unwinding assembly includes an unwinding unit and an unwinding deviation rectifying unit. The unwinding unit includes an unwinding motor, a safety chuck, and an air shaft. The two ends of the air shaft are respectively fixed in the safety chucks, and the output end of the unwinding motor is connected to the safety chuck;

[0017] The unwinding deviation rectifying unit includes an unwinding deviation rectifying actuator, and the unwinding deviation rectifying actuator is located on one side of the unwinding assembly close to the hot pressing assembly.

[0018] Further, the winding assembly includes a winding unit and a winding deviation rectifying unit. The winding unit includes a winding motor, a safety chuck and an air shaft. Wherein, both ends of the air shaft are respectively fixed in the safety chuck, and the output end of the winding motor is connected to the safety chuck;

[0019] The winding deviation rectifying unit includes a winding deviation rectifying actuator, and the winding deviation rectifying actuator is located on one side of the winding assembly close to the hot pressing assembly.

[0020] A method for rewinding a diaphragm includes the following steps:

[0021] S1: The diaphragm released by the unwinding assembly bypasses the tension idler roller in the tension roller assembly. When the tensions of the diaphragm in the tension idler roller are different, the position of the tension idler roller relative to the main shaft is different, so that the inclination angles of the side plates are different; when the inclination angle of the side plate changes, the tension regulator drives the main shaft to rotate to ensure that the inclination of the side plate remains a constant value;

[0022] S2: The diaphragm bypassing the tension idler roller enters the hot pressing assembly for hot pressing and edge sealing on both sides; indentations are formed at the hot pressing and edge sealing positions on both sides of the diaphragm to provide a reference for the glue application position in subsequent process treatment;

[0023] S2: The diaphragm after edge sealing enters the winding assembly for rewinding.

[0024] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The present application provides a tension roller assembly between the hot pressing assembly and the unwinding assembly. The tension roller assembly includes two opposite wallboards fixed in the frame. Side plates are provided at the tops of the two wallboards. Both ends of the main shaft penetrate through the side plates and are rotatably connected to the wallboards. One end of the main shaft is connected to the tension regulator; a counterweight roller and a tension idler roller are provided on both sides of the main shaft, and both ends of the counterweight roller and the tension idler roller are fixed in the side plates; when the diaphragm bypasses the tension idler roller, the diaphragm with different tensions will drive the tension idler roller to rotate and move relative to the main shaft. Among them, the wallboard is fixed and the main shaft can rotate relative to the wallboard. The main shaft drives the side plate to rotate during the rotation process; when the diaphragm is wound on the tension idler roller, the diaphragm with different tensions will drive the tension idler roller to move up and down. Since the main shaft can only rotate and cannot translate, the side plate will drive the main shaft to rotate, and then the inclination angle of the side plate will change. When the inclination angle of the side plate changes, the tension regulator drives the main shaft to rotate to ensure that the inclination of the side plate remains a constant value; the present application can judge the diaphragm tension according to the inclination of the side plate, and keep the inclination of the side plate set by driving the main shaft to rotate, so as to ensure that the diaphragm entering the hot pressing assembly always maintains the same tension, improve the stability and uniformity of hot pressing, and then improve the quality of subsequent filters. Brief Description of the Drawings

[0025] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments in accordance with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] In the drawings:

[0028] Figure 1 is the overall schematic diagram of the diaphragm rewinding device in this application;

[0029] Figure 2 is the structural schematic diagram of the unwinding assembly in this application;

[0030] Figure 3 is the structural schematic diagram of the unwinding unit in this application;

[0031] Figure 4 is the structural schematic diagram of the unwinding deviation correction unit in this application;

[0032] Figure 5 is the structural schematic diagram of the unwinding tension roller assembly in this application;

[0033] Figure 6 is the structural schematic diagram of the hot pressing assembly in this application;

[0034] Figure 7 is the structural schematic diagram of the active traction assembly in this application;

[0035] Figure 8 is the structural schematic diagram of the frame in this application;

[0036] Figure 9 is the photo schematic diagram of the indentation on the diaphragm after hot pressing and edge sealing in this application;

[0037] Reference numerals of the attached drawings: 1. Unwinding assembly; 11. Unwinding unit; 12. Unwinding deviation rectifying unit; 111. Unwinding motor; 112. Chuck seat; 113. Safety chuck; 114. Air shaft; 121. Unwinding base frame; 122. Guide rail; 123. Coil diameter detection sensor; 124. Deviation rectifying idler roller bracket; 125. Deviation rectifying idler roller; 126. Bracing; 127. Unwinding deviation rectifying actuator; 128. Base plate; 2. Tension roller assembly; 21. Main shaft; 22. Wall panel; 23. Angle sensor; 24. Side plate; 26. Tension idler roller; 27. Low-friction air cylinder; 28. Counterweight roller; 3. Hot pressing assembly; 31. Adjusting screw rod; 32. Downward pressing air cylinder; 33. Moving guide rail; 34. Clearance adjuster; 35. First heating block; 351. First tensioning pulley; 352. Second tensioning pulley; 353. First synchronous belt; 36. Second heating block; 361. Third tensioning pulley; 362. Fourth tensioning pulley; 363. Second synchronous belt; 37. Fixed plate; 38. Lower pressing plate; 4. Main traction assembly; 41. Rubber roller; 42. Bearing seat; 43. Coupling; 44. Main traction motor seat; 45. Main traction motor; 5. Rewinding assembly; 6. Frame; 61. Side rod; 62. Unwinding roller; 63. Rewinding roller; 64. Top plate; 65. Length measuring wheel. Detailed implementation manners

[0038] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed implementation manners of the present invention will now be described in detail with reference to the attached drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the attached drawings and are in a specific orientation structure and operation, only for the convenience of describing the present technical solution, rather than indicating that the indicated mechanism or component must have a specific orientation, and thus should not be construed as a limitation to the present invention.

[0039] It should also be noted that, unless otherwise clearly specified and defined, terms such as "install", "connect", "link", "fix", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as "on" or "under" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution of the present invention, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should clearly understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0041] Please refer to the attached Figures 1-9, A diaphragm rewinding device, comprising a frame 6, a winding assembly 5 and an unwinding assembly 1 located on both sides of the frame 6. The diaphragm includes a membrane cloth and a coating on the surface of the membrane cloth. A hot pressing assembly and a tension roller assembly are located inside the frame 6. In this application, a tension roller assembly 2 is arranged between the hot pressing assembly and the unwinding assembly 1. The tension roller assembly 2 includes two opposite wallboards 22 fixed in the frame 6. A side plate 24 is arranged at the top of the two wallboards 22. Both ends of the main shaft 21 penetrate through the side plate 24 and are rotatably connected to the wallboards 22. A counterweight roller 28 and a tension idler roller 26 are arranged on both sides of the main shaft 21. Both ends of the counterweight roller 28 and the tension idler roller 26 are fixed in the side plate 24. When the diaphragm bypasses the tension idler roller 26, diaphragms with different tensions will drive the tension idler roller 26 to rotate and move relative to the main shaft 21. Among them, the wallboard 22 is fixed, and the main shaft 21 can rotate relative to the wallboard 22. The side plate 24 rotates when the main shaft 21 rotates. When the diaphragm is wound around the tension idler roller 26, diaphragms with different tensions will drive the tension idler roller 26 to move up and down. Since the main shaft 21 can only rotate, the side plate 24 will drive the main shaft 21 to rotate, and then the inclination of the side plate 24 will change. When the inclination angle of the side plate 24 changes, the tension regulator drives the main shaft 21 to rotate to ensure that the inclination of the side plate remains a constant value. In this application, the diaphragm tension can be judged according to the inclination of the side plate, and the inclination of the side plate is kept set by driving the main shaft to rotate. In this way, it can be ensured that the diaphragms entering the hot pressing assembly always maintain the same tension, improving the stability and uniformity of hot pressing, and further improving the quality of subsequent filters.

[0042] The following is a detailed introduction to each component of this application:

[0043] Please refer to the attached Figure 2 - attached Figure 4 , In this application, the unwinding assembly 1 includes an unwinding unit 11 and an unwinding deviation rectifying unit 12. The unwinding unit 11 includes symmetrically and oppositely arranged chuck seats 112. A safety chuck 113 is installed on the chuck seat 112. The safety chuck 113 can rotate relative to the chuck seat 112. The two safety chucks 113 are used to fix both ends of the air shaft 114. A unwinding motor 111 is also installed on one of the chuck seats 112. The output end of the unwinding motor 111 is connected to the safety chuck 113. The unwinding motor 111 drives the safety chuck 113 and the air shaft 114 to rotate, and the diaphragm wound on the air shaft 114 is unwound.

[0044] The unwinding deviation rectifying unit 12 includes a bottom plate 128 fixed to the machine frame 6. A guide rail 122 and an unwinding deviation rectifying actuator 127 are arranged on the bottom plate 128. The unwinding bottom frame 121 is installed on the guide rail 122. The unwinding deviation rectifying actuator 127 is connected to both the bottom plate 128 and the unwinding bottom frame 121, and can drive the unwinding bottom frame 121 to slide along the guide rail 122. Two deviation rectifying idler roller brackets 124 arranged oppositely are fixed on the unwinding bottom frame 121. The two ends of the deviation rectifying idler roller 125 and the bracing block 126 are respectively fixed in the two deviation rectifying idler roller brackets 124, and the bracing block 126 is located below the deviation rectifying idler roller 125. A coil diameter detection sensor 123 is arranged in the middle of the bracing block 126, and the coil diameter detection sensor 123 faces the diaphragm outside the air shaft 114. The unwinding deviation rectifying actuator 127 drives the unwinding bottom frame 121 to slide in the guide rail 122, thereby adjusting the tension of the diaphragm wound on the deviation rectifying idler roller 125.

[0045] Please refer to the appendix Figure 5 , the tension roller assembly 2 includes an unwinding tension roller assembly and a winding tension roller assembly. The unwinding tension roller assembly is located between the unwinding assembly 1 and the hot pressing assembly 3, and the winding tension roller assembly is located between the winding assembly 5 and the hot pressing assembly 3. The structures of the two tension roller assemblies are the same, and the naming of the two tension roller assemblies will not be distinguished in the following introduction process of this application.

[0046] The tension roller assembly 2 includes two opposite wallboards 22 fixed in the machine frame 6. Side plates 24 are arranged at the tops of the two wallboards 22. The two ends of the main shaft 21 penetrate through the side plates 24 and are rotatably connected to the wallboards 22. A counterweight roller 28 and a tension idler roller 26 are arranged on both sides of the main shaft 21. The two ends of the counterweight roller 28 and the tension idler roller 26 are fixed in the side plates 24. An angle sensor 23 and a low-friction air cylinder 27 are arranged in the wallboards 22. The output end of the low-friction air cylinder 27 is connected to the main shaft 21. The angle sensor 23 is used to monitor the inclination angle of the side plate 24, and the low-friction air cylinder 27 is used to drive the main shaft 21 to rotate. The low-friction air cylinder 27 is the tension regulator.

[0047] When the diaphragm bypasses the tension idler roller 26, diaphragms with different tensions will drive the tension idler roller 26 to rotate and move relative to the main shaft 21. Among them, the wallboard 22 is fixed, the main shaft 21 can rotate relative to the wallboard 22, and the main shaft 21 drives the side plate 24 to rotate during the rotation process; when the diaphragm is wound on the tension idler roller 26, diaphragms with different tensions will drive the tension idler roller 26 to move up and down. Since the main shaft 21 can only rotate and cannot translate, the side plate 24 will drive the main shaft 21 to rotate, and then the inclination angle of the side plate 24 will change. In this application, the diaphragm tension can be judged according to the inclination degree of the side plate 24, and the main shaft 21 is driven by the low-friction air cylinder 27 to rotate to a preset position, so that the inclination degree of the side plate 24 is kept set, so as to ensure that the diaphragms entering the hot pressing assembly 3 always maintain the same tension.

[0048] In this application, the angle sensors in the two tension roller assemblies are respectively communicatively connected to the unwinding motor and the winding motor. That is, the angle sensor near the unwinding assembly is communicatively connected to the unwinding motor. The angle sensor can judge the diaphragm tension according to the inclination of the side plate. The angle sensor converts the magnitude of the diaphragm tension into an analog signal and transmits it to the unwinding motor. The unwinding motor changes the frequency according to the received analog signal to increase or decrease the unwinding speed of the diaphragm, so as to keep the tension of the diaphragm constant. That is to say, this application not only relies on the low-friction tension cylinder to change the tension of the diaphragm transmitted to the tension roller assembly, but also synchronously changes the unwinding speed of the diaphragm from the unwinding source, using both methods to ensure that the diaphragm tension is always constant.

[0049] Similarly, the angle sensor near the winding assembly is communicatively connected to the winding motor. The angle sensor can judge the diaphragm tension according to the inclination of the side plate. The angle sensor converts the magnitude of the diaphragm tension into an analog signal and transmits it to the winding motor. The winding motor changes the frequency according to the received analog signal to increase or decrease the winding speed of the diaphragm, so as to keep the tension of the diaphragm constant. That is to say, this application not only relies on the low-friction tension cylinder to change the tension of the diaphragm transmitted to the tension roller assembly, but also synchronously changes the winding speed of the diaphragm from the winding source, using both methods to ensure that the diaphragm tension is always constant.

[0050] Please refer to the attached Figure 6 , in this application, the hot pressing assembly 3 includes two hot pressing units arranged oppositely and located on both sides of the diaphragm. The hot pressing unit includes a first synchronous belt 353 and a second synchronous belt 363 arranged vertically. A diaphragm channel is formed between the first synchronous belt 353 and the second synchronous belt 363, and heating blocks are arranged in the first synchronous belt 353 and the second synchronous belt 363.

[0051] In this application, a first tension pulley 351 and a second tension pulley 352 are arranged at both ends of the first synchronous belt 353, and a third tension pulley 361 and a fourth tension pulley 362 are arranged at both ends of the second synchronous belt 363. The center connection line of the first tension pulley 351 and the second tension pulley 352 is parallel to the movement direction of the diaphragm, and the center connection line of the third tension pulley 361 and the fourth tension pulley 362 is parallel to the movement direction of the diaphragm.

[0052] The first tension pulley 351 or the second tension pulley 352 is connected to a first driving mechanism (not shown in the figure). The first driving mechanism drives the first tension pulley 351 or the second tension pulley 352 to rotate, thereby driving the first synchronous belt 353 to rotate in a cycle. Similarly, the third tension pulley 361 or the fourth tension pulley 362 is connected to a second driving mechanism (not shown in the figure). The second driving mechanism drives the third tension pulley 361 or the fourth tension pulley 362 to rotate, thereby driving the second synchronous belt 363 to rotate in a cycle. It should be noted that in this application, the diaphragm channel is located between the first synchronous belt 353 and the second synchronous belt 363, and the diaphragm needs to be transported from the unwinding assembly to the winding assembly. Therefore, the first synchronous belt 353 and the second synchronous belt 363 rotate in opposite directions, so that the upper and lower surfaces of the diaphragm are subjected to forces in the same direction and move in the direction of the unwinding assembly 1.

[0053] As a specific embodiment, in this application, the first synchronous belt 353 is located above the second synchronous belt 363, and the first tension pulley 351 and the second tension pulley 352 are located between the third tension pulley 361 and the fourth tension pulley 362. That is to say, the length of the first synchronous belt 353 is less than the length of the second synchronous belt 363. When the diaphragm enters the diaphragm channel, its lower surface first contacts the second synchronous belt 363, and after moving a certain distance, its upper surface then contacts the first synchronous belt 353. Similarly, when the diaphragm exits the diaphragm channel, its upper surface first disengages from the first synchronous belt 353, and after moving a certain distance, its lower surface then disengages from the second synchronous belt 363.

[0054] To ensure the uniformity of hot pressing, in this application, the central position of the first synchronous belt 353 coincides with the central position of the second synchronous belt 363 in the vertical direction. Here, the central position refers to the central position in the direction of the cyclic rotation of the synchronous belt.

[0055] The surfaces of the guide rollers, belts, etc. that come into contact with the coated surface of the diaphragm layer in this application are all coated with Teflon to ensure that the coated surface always remains smooth when contacting the guide roller or the belt and will not stick the coating off. At the same time, both the first synchronous belt 353 and the second synchronous belt 363 are Teflon belts, and the thickness of the Teflon belt is 0.16 mm. The belt with this thickness can meet the imprint effect of side sealing and achieve an ideal gluing state.

[0056] In this application, the heating block includes a first heating block 35 and a second heating block 36. The first heating block 35 is located inside the first synchronous belt 353, and the second heating block 36 is located inside the second synchronous belt 363. In the actual structure, the ends of the first heating block 35, the first tensioning pulley 351, and the second tensioning pulley 352 are fixed to the side wall of the lower pressing plate 38, and the ends of the second heating block 36, the third tensioning pulley 361, and the fourth tensioning pulley 362 are fixed to the side wall of the fixing plate 37; the lower pressing plate 38 is slidably connected to the fixing plate 37. Here, the end refers to the end of the tensioning pulley and the heating block away from the center of the diaphragm.

[0057] The lower pressing plate 38 is fixedly connected to a lower pressing air cylinder 32 for driving it to rise and fall. When the lower pressing air cylinder 32 presses down, it can drive the entire lower pressing plate 38 and the first heating block 35, the first tensioning pulley 351, and the second tensioning pulley 352 connected to the lower pressing plate 38 to press down synchronously. In this application, the height of the diaphragm channel is greater than the thickness of the diaphragm. Therefore, when the diaphragm passes through the diaphragm channel, the first synchronous belt 353 does not contact the upper surface of the diaphragm. In order to thermally press the upper and lower side edges of the diaphragm simultaneously, when the diaphragm passes, the lower pressing air cylinder 32 needs to drive the lower pressing plate 38 to press down so that the bottom of the first synchronous belt 353 contacts the upper surface of the diaphragm, realizing the thermal pressing of the upper side edge. If intermittent thermal pressing is adopted in this application, the lower pressing air cylinder 32 extends and retracts intermittently during production. If continuous thermal pressing is adopted, the lower pressing air cylinder 32 is always in the extended state during production.

[0058] In this application, the first heating block 35 can be an integral heating block or a heating block composed of multiple heating blocks spliced together, and there can be a gap at the splicing interval because the diaphragm will move a certain distance when passing through the diaphragm channel, and the contact position between the first synchronous belt 353 and the upper surface of the diaphragm changes in real time during the movement, which is sufficient to evenly thermally press the upper side edge. The gap adjuster 34 is used to adjust the gap between the first heating blocks 35. On the side of the first heating block 35 away from the center of the diaphragm, a backing plate is also provided to place the first heating block 35 to generate a thermal influence on other components in the hot liquid assembly.

[0059] In this application, the second heating block 36 can be an integral heating block or a heating block composed of multiple heating blocks spliced together, and there can be a gap at the splicing interval because the diaphragm will move a certain distance when passing through the diaphragm channel, and the contact position between the second synchronous belt 363 and the lower surface of the diaphragm changes in real time during the movement, which is sufficient to evenly thermally press the lower side edge. On the side of the second heating block 36 away from the center of the diaphragm, a backing plate is also provided to place the second heating block 36 to generate a thermal influence on other components in the hot liquid assembly.

[0060] The widths of different signal diaphragms are also different. When the diaphragm widths are different, the distance between the two heating units needs to be adjusted so that the device of the present application can be applicable to the hot pressing of diaphragms with different widths. To achieve the adjustment of the distance between the two hot pressing units, the fixed plate 37 of the present application is fixedly connected to the adjusting screw rod 31. Both sides of the bottom end of the fixed plate 37 are provided with moving guide rails 33, and the extending direction of the moving guide rails 33 is perpendicular to the moving direction of the diaphragm. When the adjusting screw rod 31 rotates, it will drive the fixed plate 37 to move along the moving guide rails 33, and this moving direction is the direction of moving away from or approaching another hot pressing unit.

[0061] The unwinding assembly 1 unwinds the diaphragm, and the diaphragm enters the hot pressing assembly 3 through the unwinding tension roller assembly 2. The lower surfaces on both sides of the diaphragm are located above the second synchronous belt 363, and the first synchronous belt 353 is located above the upper surfaces on both sides of the diaphragm and is at a certain distance from the upper surface of the diaphragm. When the upper surface of the diaphragm is transmitted below the first synchronous belt 353, the pressing cylinder 32 drives the lower pressing plate 28 to press down, so that the lower part of the first synchronous belt 353 contacts the upper surface of the diaphragm. At this time, the first heating block 35 in the first synchronous belt 353 and the second heating block 36 in the second synchronous belt 363 simultaneously hot press the upper and lower surfaces on both sides of the diaphragm. At the same time, the rotation of the first synchronous belt 353 and the second synchronous belt 363 causes the upper and lower surfaces of the diaphragm to be subjected to a force towards the winding assembly 5, and then it is transmitted to the winding assembly 5 through the winding tension roller assembly.

[0062] The edge sealing temperature of the present application is about 220°C, and uniform and stable indentations are hot pressed, showing a continuous semi-transparent state. There should be no phenomena such as interruption, inclined deviation, uneven depth, etc., and the base material should not be damaged. The pressure indentation generated by heating is 5 ± 0.5 mm in width, and the indentation after hot pressing is as shown in the circle in the appendix Figure 9 shown inside.

[0063] A CCD detection unit can also be provided between the two hot pressing units of the present application to detect whether the indentations on both sides of the diaphragm after hot pressing are stable and uniform. If there are defects, adjustments need to be made in a timely manner.

[0064] Please refer to the appendix Figure 7 As shown, between the winding tension roller assembly and the hot pressing assembly of the present application, there is also a main traction assembly 4. The main traction assembly 4 includes a main traction motor 45, a coupling 43, and a rubber roller 41. The main traction motor 45 is fixed in the main traction motor seat 44. Both ends of the rubber roller 41 are installed on the bearing seats 42, and the output end of the main traction motor 45 is connected to one end of the rubber roller 41 through the coupling 43; the film cloth bypasses the rubber roller 41 and is transmitted to the winding tension roller assembly.

[0065] The rewinding assembly 5 of this application includes a rewinding unit and a rewinding deviation rectifying unit. The rewinding unit includes a rewinding motor, a safety chuck, and an air shaft. Among them, both ends of the air shaft are respectively fixed in the safety chuck, and the output end of the rewinding motor is connected to the safety chuck; the rewinding deviation rectifying unit includes a rewinding deviation rectifying actuator, which is located on the side of the rewinding assembly close to the hot pressing assembly. The structure of the rewinding assembly 5 is similar to that of the unwinding assembly 1 and will not be introduced in detail here.

[0066] As shown in the Figure 8 accompanying drawings, the frame 6 in this application includes side rods 61, a top plate 64 located at the top of the side rods 61, an unwinding roller 62 located on the top plate 64, and a length measuring wheel 65 located on the side of the unwinding roller 62; a rewinding roller 63 and a bottom plate 128 located at the bottom of the side rods 61.

[0067] This application also provides a method for rewinding a diaphragm, including the following steps:

[0068] S1: The diaphragm released by the unwinding assembly 1 bypasses the tension idler roller 26 in the tension roller assembly 2. When the tension of the diaphragm in the tension idler roller 26 is different, the position of the tension idler roller 26 relative to the main shaft 21 is different, causing the inclination angle of the side plate 24 to be different; when the inclination angle of the side plate changes, the low-friction cylinder 27 drives the main shaft 21 to rotate, and the main shaft 21 drives the side plate 24 to rotate, so that the inclination angle of the side plate 24 remains at a set value, ensuring that the diaphragm tension remains fixed.

[0069] S2: The diaphragm bypassing the tension idler roller 26 enters the hot pressing assembly 3 for hot pressing and edge sealing on both sides; indentations are formed at the hot pressed and edge sealed positions on both sides of the diaphragm, providing a reference for the glue application position in subsequent process treatments; among them, the hot pressing process is as described above and will not be elaborated here.

[0070] S2: After edge sealing, the diaphragm passes through the main traction assembly 4 and the rewinding tension roller assembly in sequence and enters the rewinding assembly 5 for rewinding. Among them, the working processes of the main traction assembly 4 and the rewinding tension roller assembly are as described above and will not be elaborated here.

[0071] It can be understood that the above embodiments only represent the preferred implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. A diaphragm rewinding device, comprising a frame, a winding assembly and an unwinding assembly located on both sides of the frame, wherein the diaphragm includes a membrane cloth and a coating located on the surface of the membrane cloth; It is characterized in that It further includes: A hot pressing assembly and a tension roller assembly located inside the frame. The tension roller assembly includes two opposite wallboards fixed in the frame. Side plates are provided at the tops of the two wallboards. Both ends of the main shaft penetrate through the side plates and are rotatably connected to the wallboards. One end of the main shaft is connected to a tension regulator; A counterweight roller and a tension idler roller are arranged on both sides of the main shaft. Both ends of the counterweight roller and the tension idler roller are fixed in the side plates; The hot pressing assembly is used for hot pressing and sealing the two sides of the diaphragm; The diaphragm released by the unwinding assembly sequentially passes through the tension idler roller and the hot pressing assembly and enters the winding assembly; The tension regulator drives the main shaft to rotate to ensure that the inclination of the side plate remains a constant value; The tension regulator drives the main shaft to rotate to ensure that the inclination of the side plate remains a constant value, including: The tension regulator is a low-friction cylinder. An angle sensor and a low-friction cylinder are arranged in the wallboard. The output end of the low-friction cylinder is connected to the main shaft. The angle sensor is used to monitor the inclination angle of the side plate, judge the diaphragm tension according to the inclination angle of the side plate, convert the magnitude of the diaphragm tension into an analog signal and transmit it to the winding assembly or the unwinding assembly. The winding assembly or the unwinding assembly changes the frequency according to the received analog signal to increase or decrease the winding speed and unwinding speed of the diaphragm.

2. A diaphragm rewinding device according to claim 1, It is characterized in that The tension roller assembly includes an unwinding tension roller assembly and a winding tension roller assembly. The unwinding tension roller assembly is located between the unwinding assembly and the hot pressing assembly, and the winding tension roller assembly is located between the winding assembly and the hot pressing assembly.

3. A diaphragm rewinding device according to claim 2, It is characterized in that A main traction assembly is further included between the winding tension roller assembly and the hot pressing assembly. The main traction assembly includes a main traction motor, a coupling and a rubber roller. The main traction motor is connected to one end of the rubber roller through the coupling.

4. A diaphragm rewinding device according to claim 1, It is characterized in that The hot pressing assembly includes two hot pressing units arranged oppositely and located on both sides of the diaphragm. Each hot pressing unit includes a first synchronous belt and a second synchronous belt arranged vertically. A diaphragm channel is formed between the first synchronous belt and the second synchronous belt. Heating blocks are arranged in the first synchronous belt and the second synchronous belt; First tensioning wheels and second tensioning wheels are arranged at both ends of the first synchronous belt, and third tensioning wheels and fourth tensioning wheels are arranged at both ends of the second synchronous belt. And the center connection line of the first tensioning wheel and the second tensioning wheel is parallel to the movement direction of the diaphragm, and the center connection line of the third tensioning wheel and the fourth tensioning wheel is parallel to the movement direction of the diaphragm.

5. A diaphragm rewinding device according to claim 4, It is characterized in that The heating block includes a first heating block and a second heating block. The first heating block is located inside the first synchronous belt, and the second heating block is located inside the second synchronous belt; The ends of the first heating block, the first tensioning wheel and the second tensioning wheel are fixed to the side wall of the lower pressing plate, and the ends of the second heating block, the third tensioning wheel and the fourth tensioning wheel are fixed to the side wall of the fixing plate; the lower pressing plate is slidably connected to the fixing plate.

6. A diaphragm rewinding device according to claim 5, wherein, the lower pressing plate is fixedly connected to a lower pressing air cylinder for driving it to rise and fall; the fixing plate is fixedly connected to an adjusting screw rod, and moving guide rails are arranged on both sides of the bottom end of the fixing plate, and the extending direction of the moving guide rails is perpendicular to the moving direction of the diaphragm.

7. A diaphragm rewinding device according to claim 1, wherein, the unwinding assembly includes an unwinding unit and an unwinding deviation rectifying unit. The unwinding unit includes an unwinding motor, a safety chuck and an air shaft. Among them, both ends of the air shaft are respectively fixed in the safety chuck, and the output end of the unwinding motor is connected to the safety chuck; the unwinding deviation rectifying unit includes an unwinding deviation rectifying actuator, and the unwinding deviation rectifying actuator is located on one side of the unwinding assembly close to the hot pressing assembly.

8. A diaphragm rewinding device according to claim 1, wherein, the winding assembly includes a winding unit and a winding deviation rectifying unit. The winding unit includes a winding motor, a safety chuck and an air shaft. Among them, both ends of the air shaft are respectively fixed in the safety chuck, and the output end of the winding motor is connected to the safety chuck; the winding deviation rectifying unit includes a winding deviation rectifying actuator, and the winding deviation rectifying actuator is located on one side of the winding assembly close to the hot pressing assembly.

9. A method for rewinding a diaphragm using the diaphragm rewinding device according to any one of claims 1-8, wherein, it includes the following steps: S1: The diaphragm released by the unwinding assembly bypasses the tension idler roller in the tension roller assembly. When the tensions of the diaphragm in the tension idler roller are different, the position of the tension idler roller relative to the main shaft is different, so that the inclination angle of the side plate is different; when the inclination angle of the side plate changes, the tension regulator drives the main shaft to rotate to ensure that the inclination of the side plate remains a constant value; S2: The diaphragm bypassing the tension idler roller enters the hot pressing assembly for hot pressing and edge sealing on both sides; indentations are formed at the hot pressing and edge sealing positions on both sides of the diaphragm, providing a reference for the gluing position in subsequent process treatment; S2: After edge sealing, the diaphragm enters the winding assembly for rewinding.

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