Hot-pressing laminating device for PPS (polyphenylene sulfite) and PTFE (polytetrafluoroethylene) laminating filter material

By installing a resistance adjustment mechanism on the film inflation shaft and adjusting the film tension using a pressure sensor and a resistance adjustment motor, the coating folds and bubbles caused by the drop in the PTFE microporous film are solved, and the stability and quality of the coating process are improved.

CN223149891UActive Publication Date: 2025-07-25ZHEJIANG YANPAI FILTRATION TECH
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422473010.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-14
Publication Date
2025-07-25
Estimated Expiration
2034-10-14

AI Technical Summary

Technical Problem

During the hot-clad coating process of PPS and PTFE coating filters, the tension of the PTFE microporous film decreases with the weight of the coil, resulting in the film relaxation and the occurrence of coating folds or bubbles.

Method used

By installing a resistance adjustment mechanism on the film inflation shaft, the film tension is adjusted using a pressure sensor and a resistance adjustment motor to keep the film tension constant and avoid coating defects caused by tension changes.

Benefits of technology

Effectively maintain the tension of the PTFE microporous film to prevent the appearance of coating wrinkles and bubbles, and ensure the quality of coating.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223149891U_ABST
    Figure CN223149891U_ABST
Patent Text Reader

Abstract

The utility model provides a hot-pressing laminating device for PPS (polyphenylene sulfite) and PTFE (polytetrafluoroethylene) laminating filter materials, which relates to the technical field of hot-pressing laminating and comprises a frame, a film inflatable shaft is rotatably mounted on the frame, connecting gears are fixed at two ends of the film inflatable shaft, the outer edge of the connecting rotating shaft is abutted against a resistance adjusting mechanism, and the resistance adjusting mechanism is connected with the film inflatable shaft. The resistance adjusting mechanism comprises a mounting beam seat, a positioning beam rod, a resistance adjusting gear, a damping spring, a resistance adjusting sliding table, a nut sliding block, a resistance adjusting screw rod and a resistance adjusting motor, the resistance adjusting sliding table is provided with a sliding slope, the nut sliding block abuts against the sliding slope, a guide roller and a tension roller are mounted on the rack, and the tension roller abuts against the guide roller. The two ends of the guide roller are rotationally connected to the rack, the two ends of the tension roller are connected with feedback assemblies, each feedback assembly comprises a middle rotating shaft, a feedback beam rod and a pressure sensor, the middle rotating shafts are fixed to the rack, and the pressure sensors are electrically connected to the resistance adjusting motor. According to the utility model, rotation resistance is applied to the film air expansion shaft through the resistance adjusting mechanism so as to adjust the tension of the PTFE microporous film.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of hot press film laminating, in particular to a hot press film laminating device for PPS and PTFE laminated filter materials. Background Technique

[0002] PPS and PTFE laminated filter materials are advanced filter materials combining polyphenylene sulfide (PPS) and polytetrafluoroethylene (PTFE) materials, with excellent heat resistance, chemical corrosion resistance and high filtration performance.

[0003] This kind of filter material is to laminate the PTFE microporous film on the PPS substrate by hot press lamination. In the hot press film laminating device, usually, the PTFE microporous film roll and the PPS substrate are placed on the air shaft, and the PTFE microporous film is pulled out and passed through the hot press roller to be directly laminated on the PPS substrate. Usually, the weight of the PTFE microporous film roll is relatively large, and the tension of the part before the PTFE microporous film passes through the hot press roller is relatively large during the feeding process. However, as the PTFE microporous film roll is gradually used, its own gravity gradually decreases, resulting in a gradual decrease in tension, causing the PTFE microporous film laminated on the laminated filter material to gradually become loose, and then bubbles or irregular wrinkles appear on the laminated filter material. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a hot press film laminating device for PPS and PTFE laminated filter materials, and solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A hot pressing and film laminating device for PPS and PTFE coated filter materials, comprising a frame. A film air expansion shaft is rotatably installed on the frame. Connecting rotating shafts are arranged at both ends of the film air expansion shaft. Connecting gears are fixed on the connecting rotating shafts. A resistance adjusting mechanism abuts against the outer edge of the connecting rotating shaft. The resistance adjusting mechanism includes an installation beam seat, a positioning beam rod, a resistance adjusting gear, a damping spring, a resistance adjusting sliding table, a nut slider, a resistance adjusting screw rod and a resistance adjusting motor. The installation beam seat is fixed on the frame. The positioning beam rod extends from the installation beam seat towards the film air expansion shaft. The resistance adjusting gear is rotatably connected to the positioning beam rod. The resistance adjusting gear meshes with the connecting gear. The resistance adjusting sliding table is sleeved on the positioning beam rod in a sliding manner. Both ends of the damping spring respectively abut against the resistance adjusting gear and the resistance adjusting sliding table. The resistance adjusting sliding table is provided with a sliding inclined surface. The resistance adjusting motor is fixed on the installation beam seat. The resistance adjusting screw rod is fixed on the output end of the resistance adjusting motor. The nut slider is threadedly connected to the resistance adjusting screw rod. The nut slider abuts against the sliding inclined surface.

[0009] Preferably, the resistance adjusting sliding table includes a butting ring and an inclined surface sliding table integrally formed. The damping spring abuts against the butting ring. A plurality of limiting strips are arranged on the inner wall of the butting ring. A plurality of limiting grooves are arranged on the outer wall of the positioning beam rod. The limiting strips are slidably connected in the limiting grooves. The sliding inclined surface is arranged on one side of the inclined surface sliding table facing the nut slider.

[0010] Preferably, the nut slider is arranged as a U-shaped slider with an open upper end. One end of the open U-shaped nut slider is sleeved on the outer side of the positioning beam rod. One side of the nut slider facing the resistance adjusting sliding table is arranged as a butting inclined surface. The butting inclined surface abuts against the sliding inclined surface of the inclined surface sliding table. A threaded hole is arranged on the lower side of the U-shaped nut slider. The resistance adjusting screw rod is threadedly connected and inserted into the threaded hole.

[0011] Preferably, an adjusting slide rail is vertically arranged on the installation beam seat. An adjusting sliding groove is arranged on the nut slider. The nut slider is slidably connected to the adjusting slide rail.

[0012] Preferably, a feedback roller group is installed on the frame. The feedback roller group includes two guiding rollers arranged up and down and a tension roller arranged between the two guiding rollers. Both ends of the guiding rollers are rotatably connected to the frame. Feedback components are connected to both ends of the tension roller.

[0013] Preferably, the feedback components include a central rotating shaft fixed on the frame, a feedback beam rod rotatably connected to the central rotating shaft in the middle and a pressure sensor fixed on the frame. The tension roller is rotatably connected to the lower end of the feedback beam rod. The upper end of the feedback beam rod slidably abuts against the pressure sensor. The pressure sensor is electrically connected to the resistance adjusting motor.

[0014] Preferably, a contact wheel is connected to the upper rotating rod of the feedback beam rod, and the contact wheel abuts against the pressure sensor.

[0015] (III) Beneficial effects

[0016] The utility model provides a hot pressing and laminating device for PPS and PTFE coated filter materials, which has the following beneficial effects:

[0017] 1. In the hot pressing and laminating process of the utility model, the PTFE microporous film is sequentially wound around the upper guiding roller, tension roller and lower guiding roller from the film inflation shaft. When the tension of the PTFE microporous film acts on the tension roller, when the tension of the PTFE microporous film changes, the tension roller is pulled, so that the feedback beam rod transmits the pressure change to the pressure sensor around the central rotating shaft, and then controls the rotation of the resistance adjusting motor through the pressure sensor. Through threaded connection, the nut slider slides up and down and squeezes the resistance adjusting slide table left and right through the inclined plane, so as to squeeze the damping spring. The rotational damping of the resistance adjusting gear is changed through the elasticity of the damping spring, that is, the rotational resistance of the film inflation shaft is changed, and the tension of the PTFE microporous film during unwinding is adjusted to always keep the tension of the PTFE microporous film constant, avoiding film laminating wrinkles and bubbles caused by tension changes. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of a hot pressing and laminating device for PPS and PTFE coated filter materials of the utility model;

[0019] Figure 2 It is a partial enlarged schematic diagram of the hot pressing and laminating device of the utility model;

[0020] Figure 3 It is a schematic structural diagram of the resistance adjusting mechanism of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the nut slider of the utility model.

[0022] In the figure: 1. Frame; 2. Film inflation shaft; 3. Substrate inflation shaft; 4. Connecting gear; 5. Guiding roller; 6. Tension roller; 7. Central rotating shaft; 8. Feedback beam rod; 9. Pressure sensor; 10. Contact wheel; 11. Mounting beam seat; 12. Positioning beam rod; 13. Resistance adjusting gear; 14. Damping spring; 15. Resistance adjusting slide table; 151. Contact ring; 152. Inclined plane slide table; 16. Nut slider; 17. Resistance adjusting screw; 18. Resistance adjusting motor. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model.

[0024] An embodiment of the utility model provides a hot pressing and laminating device for PPS and PTFE coated filter materials.

[0025] As Figure 1-2 shown, it includes a frame 1, on which a film air shaft 2, a base material air shaft 3 and a winding air shaft are rotatably installed. A base material guide roller is arranged on the frame 1, and the base material guide roller is arranged directly above the base material air shaft 3. A hot pressing roller is arranged in the middle of the frame 1, and a winding guide roller is arranged behind the hot pressing roller. A rotating support is arranged on the frame 1. Connecting rotating shafts are arranged at both ends of the film air shaft 2, and the connecting rotating shafts are rotatably connected to the rotating support. A connecting gear 4 is fixed on the connecting rotating shaft, and the connecting gear 4 is arranged between the rotating support and the film air shaft 2. The outer edge of the connecting rotating shaft abuts against a resistance adjusting mechanism.

[0026] A feedback roller group is installed on the frame 1. The feedback roller group includes two guiding rollers 5 arranged up and down and a tension roller 6 arranged between the two guiding rollers 5. The two ends of the guiding roller 5 are rotatably connected to the frame 1. Feedback components are connected to both ends of the tension roller 6. The feedback components include a central rotating shaft 7 fixed on the frame 1, a feedback beam rod 8 rotatably connected to the middle of the central rotating shaft 7, and a pressure sensor 9 fixed on the frame 1. A feedback spring is sleeved on the central rotation, and the two ends of the feedback spring are respectively connected to the frame 1 and the feedback beam rod 8. The tension roller 6 is rotatably connected to the lower end of the feedback beam rod 8, and the upper end of the feedback beam rod 8 slides and abuts against the pressure sensor 9. The pressure sensor 9 is electrically connected to a resistance adjusting motor. A bent rod extends from the upper end of the feedback beam rod 8 towards the side of the pressure sensor 9, and a contact shaft is connected to the bent rod. A contact wheel 10 is rotatably connected to the contact shaft, and the outer edge of the contact wheel 10 protrudes from the front end of the bent rod. The contact wheel 10 abuts against the pressure sensor 9. When the PTFE microporous film is in the hot pressing and laminating process, as the thickness of the PTFE microporous film roll gradually decreases, that is, the weight of the PTFE microporous film roll decreases, the rotational resistance of the film air shaft 2 decreases, and the tension of the PTFE microporous film wound on the hot pressing and laminating device gradually decreases. The tension roller 6 drives the lower end of the feedback beam rod 8 to move towards the side away from the guiding roller 5 under the action of the feedback spring. Through the lever action, the pressure of the upper end of the feedback beam rod 8 on the pressure sensor 9 gradually decreases, and the winding tension of the PTFE microporous film can be feedback through the pressure change of the pressure sensor 9.

[0027] As Figure 2 、 3, as shown in Fig. 4, the resistance adjusting mechanism includes a mounting beam seat 11, a positioning beam rod 12, a resistance adjusting gear 13, a damping spring 14, a resistance adjusting slide 15, a nut slider 16, a resistance adjusting screw 17 and a resistance adjusting motor 18. The mounting beam seat 11 is fixed on the frame 1. The positioning beam rod 12 extends from the mounting beam seat 11 towards the direction of the film air shaft 2. The resistance adjusting gear 13 is rotatably connected to the positioning beam rod 12. The resistance adjusting gear 13 meshes with the connecting gear 4. The resistance adjusting slide 15 is sleeved on the positioning beam rod 12 in a sliding manner. Both ends of the damping spring 14 abut against the resistance adjusting gear 13 and the resistance adjusting slide 15 respectively. The resistance adjusting slide 15 includes an integrally formed abutting ring 151 and an inclined slide 152. The damping spring 14 abuts against the abutting ring 151. A plurality of limiting strips are arranged on the inner wall of the abutting ring 151. A plurality of limiting grooves are arranged on the outer wall of the positioning beam rod 12. The limiting strips are slidably connected in the limiting grooves. The inclined slide 152 is provided with a sliding inclined surface. Through the above technical solution, when the resistance adjusting motor 18 rotates, the nut slider 16 can slide up and down relative to the mounting beam seat 11 and abut against the sliding inclined surface of the inclined slide 152, thereby pushing the resistance adjusting slide 15 to slide left and right to squeeze the damping spring 14. By changing the pressure of the damping spring 14 on the resistance adjusting gear 13, the rotational resistance of the resistance adjusting gear 13 on the positioning beam rod 12 is adjusted, and the rotational resistance applied by the resistance adjusting mechanism to the film air shaft 2 is changed through gear meshing, so as to adjust the tension during the feeding process of the PTFE microporous film, keep the tension of the PTFE microporous film constant, avoid film wrinkles caused by too small tension of the PTFE microporous film, and further cause hot-pressing laminating bubbles.

[0028] The resistance adjusting motor 18 is fixed on the mounting beam seat 11. The resistance adjusting screw 17 is fixed to the output end of the resistance adjusting motor 18. An adjusting slide rail is vertically arranged on the mounting beam seat 11. An adjusting chute is arranged on the nut slider 16. The nut slider 16 is slidably connected to the adjusting slide rail. The nut slider 16 is threadedly connected to the resistance adjusting screw 17. The nut slider 16 abuts against the sliding inclined surface. The adjusting slide rail plays a role of limiting and guiding the nut slider 16, so that the nut slider 16 can only slide up and down under the action of the resistance adjusting screw 17 and will not rotate, which can ensure the smooth sliding of the nut slider 16 during the process of pushing the resistance adjusting slide 15.

[0029] As Figure 4 shown, the nut slider 16 is arranged as a U-shaped slider with an open upper end. One end of the open U-shaped nut slider 16 is sleeved outside the positioning beam rod 12. The side of the nut slider 16 facing the resistance adjusting slide 15 is arranged as an abutting inclined surface. The abutting inclined surface abuts against the sliding inclined surface of the inclined slide 152. A threaded hole is arranged on the lower side of the U-shaped nut slider 16. The resistance adjusting screw 17 is threadedly connected and inserted into the threaded hole.

[0030] Workflow:

[0031] In this utility model, the PTFE microporous film roll is fixed on the film air shaft 2. The PTFE microporous film is pulled out and wound around the guiding roller 5 on the side, the tension roller 6, the guiding roller 5 on the lower side, and the hot pressing roller group in sequence. The PPS base material is placed and fixed on the base material air shaft 3. The PPS base material is pulled out and wound around the base material guiding roller and the hot pressing roller in sequence. The PTFE microporous film and the PPS base material are hot-pressed and laminated together through the hot pressing roller. Then, the PPS and PTFE coated filter material is wound around the winding air shaft after passing through the winding guiding roller.

[0032] During the process of pulling out the PTFE microporous film, with the production of hot pressing and laminating, the weight of the PTFE microporous film roll gradually decreases, the rotational resistance of the film air shaft 2 decreases, the surface tension of the PTFE microporous film gradually decreases, and the pulling force of the PTFE microporous film on the tension roller 6 becomes smaller. Under the pulling force of the feedback spring, the lower end of the feedback beam rod 8 moves towards the side away from the guiding roller 5. Through the lever action, the pressure of the upper end of the feedback beam rod 8 on the pressure sensor 9 gradually decreases. The change in the winding tension of the PTFE microporous film can be reflected through the pressure change of the pressure sensor 9. Based on this, the rotation is controlled. The nut slider 16 slides on the mounting beam seat 11 through screw cooperation. Through the mutual extrusion of the sliding inclined surface and the abutting inclined surface, the resistance adjustment slider can slide towards the resistance adjustment gear 13 on the positioning beam rod 12, and the damping spring 14 is squeezed to shorten, increasing the pressure of the damping spring 14 on the resistance adjustment gear 13 to adjust the rotational resistance of the resistance adjustment gear 13. The rotational resistance is transmitted to the film air shaft 2 through gear meshing, and the unwinding tension of the PTFE microporous film is adjusted by increasing the rotational resistance of the film air shaft 2, so as to keep the film tension of the PTFE microporous film in front of the hot pressing roller within a certain range and avoid wrinkles and bubbles caused by too small tension of the PTFE microporous film.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hot pressing and laminating device for PPS and PTFE coated filter media, comprising a frame, characterized in that: A film air shaft is rotatably installed on the frame. Connecting rotating shafts are arranged at both ends of the film air shaft. Connecting gears are fixed on the connecting rotating shafts. A resistance adjusting mechanism abuts against the outer edge of the connecting rotating shafts. The resistance adjusting mechanism includes a mounting beam seat, a positioning beam rod, a resistance adjusting gear, a damping spring, a resistance adjusting slide table, a nut slider, a resistance adjusting screw rod and a resistance adjusting motor. The mounting beam seat is fixed on the frame. The positioning beam rod extends from the mounting beam seat towards the film air shaft. The resistance adjusting gear is rotatably connected to the positioning beam rod. The resistance adjusting gear meshes with the connecting gear. The resistance adjusting slide table is sleeved on the positioning beam rod in a sliding manner. The two ends of the damping spring respectively abut against the resistance adjusting gear and the resistance adjusting slide table. The resistance adjusting slide table is provided with a sliding inclined surface. The resistance adjusting motor is fixed on the mounting beam seat. The resistance adjusting screw rod is fixed at the output end of the resistance adjusting motor. The nut slider is threadedly connected to the resistance adjusting screw rod. The nut slider abuts against the sliding inclined surface.

2. The hot pressing and laminating device for PPS and PTFE coated filter media according to claim 1, wherein: The resistance adjusting slide table includes a butting ring and an inclined surface slide table which are integrally formed. The damping spring abuts against the butting ring. A plurality of limiting strips are arranged on the inner wall of the butting ring. A plurality of limiting grooves are arranged on the outer wall of the positioning beam rod. The limiting strips are slidably connected in the limiting grooves. The sliding inclined surface is arranged on one side of the inclined surface slide table facing the nut slider.

3. A hot pressing and laminating device for PPS and PTFE coated filter materials according to claim 2, characterized in that: The nut slider is arranged as a U-shaped slider with an open upper end. One end of the open U-shaped nut slider is sleeved on the outer side of the positioning beam rod. One side of the nut slider facing the resistance adjusting slide table is provided with a butting inclined surface. The butting inclined surface abuts against the sliding inclined surface of the inclined surface slide table. A threaded hole is arranged on the lower side of the U-shaped nut slider. The resistance adjusting screw rod is threadedly connected and inserted into the threaded hole.

4. A hot pressing and laminating device for PPS and PTFE laminated filter materials according to claim 3, characterized in that: An adjusting slide rail is vertically arranged on the mounting beam seat. An adjusting chute is arranged on the nut slider. The nut slider is slidably connected to the adjusting slide rail.

5. A hot pressing and laminating device for PPS and PTFE coated filter materials according to claim 4, characterized in that: A feedback roller set is installed on the frame. The feedback roller set includes two guiding rollers arranged up and down and a tension roller arranged between the two guiding rollers. Both ends of the guiding rollers are rotatably connected to the frame. Both ends of the tension roller are connected with a feedback component.

6. The hot pressing and laminating device for PPS and PTFE coated filter materials according to claim 5, wherein: The feedback component includes a central rotating shaft fixed on the frame, a feedback beam rod rotatably connected to the central rotating shaft in the middle and a pressure sensor fixed on the frame. The tension roller is rotatably connected to the lower end of the feedback beam rod. The upper end of the feedback beam rod slides and abuts against the pressure sensor. The pressure sensor is electrically connected to the resistance adjusting motor.

7. A hot pressing and laminating device for PPS and PTFE laminated filter materials according to claim 6, characterized in that: A butting wheel is rotatably connected to the upper end of the feedback beam rod. The butting wheel abuts against the pressure sensor.