PTFE (Polytetrafluoroethylene) membrane filter material production equipment
By setting up an expansion chip and an expansion plate on the expansion shaft of the membrane material, the alignment screw and the adjustment ring are used to achieve alignment between the film coil and the substrate coil, the position offset problem during the hot-pressing coating process is solved, and the filtration efficiency of the PTFE coating filter material is improved.
Patent Information
- Application Number
- CN202422473322.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-14
AI Technical Summary
In the existing PTFE coated filter material production equipment, the base material coil and the film coil are difficult to align, resulting in wrinkles and bubbles during hot-clad coating, affecting the filtration efficiency.
A PTFE coated filter material production equipment is designed. By setting up an expansion chip and expansion plate on the expansion shaft of the membrane material, the alignment of the film coil and the substrate coil is achieved by using the adjustment screw and the adjustment ring to avoid positional deviation during the thermal coating process.
The precise alignment of the film coil and the base material coil is achieved, wrinkles and bubbles during the coating process are avoided, and the filtration efficiency of the PTFE coating filter material is improved.
Smart Images
Figure CN223133596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film covering, in particular to a production device for PTFE film-covered filter materials. Background Technique
[0002] PTFE film-covered filter material is a kind of high-molecular filtering material, which is made by compounding polytetrafluoroethylene (PTFE) microporous film on various substrates through a special process. This material combines the excellent properties of PTFE and the structural characteristics of the substrate, and has a wide range of application fields and remarkable technical advantages.
[0003] PTFE film-covered filter materials are bonded together by a hot pressing and film covering technology that heats and presses a high-strength polyester fiber substrate and polytetrafluoroethylene (PTFE) film through a production device to build a strong and delicate filtering barrier. In the hot pressing and film covering process, the substrate coil and the film coil are usually sleeved on the air shaft and locked by air inflation. Then, the substrate coil and the film coil are taken out and laid flat and aligned on the hot pressing roller group. When the substrate coil and the film coil are sleeved on the air shaft, manual installation is usually adopted, and it is very difficult to ensure the left-right alignment of the substrate coil and the film coil. After the air shaft is locked, the positions of the substrate coil and the film coil cannot be adjusted left and right. The feeding positions of the substrate coil and the film coil on the air shaft are offset from the hot pressing positions of the substrate coil and the film coil on the hot pressing roller group. This offset misalignment will cause the substrate coil and the film coil to run off to one side and then cause wrinkles. After hot pressing and film covering, air bubbles will appear between the substrate coil and the film coil, resulting in a decrease in the filtering efficiency of the PTFE film-covered filter material and affecting its use effect. Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the utility model provides a production device for PTFE film-covered filter materials, which solves the problems raised 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 PTFE film-coated filter material production device includes a frame. A base fabric expansion shaft is connected to the lower part of the front side of the frame, and a film material expansion shaft is connected to the upper part of the rear side of the frame. A hot pressing roller group is arranged in the middle of the frame. The film material expansion shaft includes a hollow main shaft, a connecting end cover, an air charging bag, an air expansion chip and an air expansion strip. A connecting shaft is arranged on the outer side of the connecting end cover. The air charging bag is connected to one of the connecting end covers. The air expansion chip includes an arc-shaped abutting piece and a plurality of sliding rods evenly distributed on the outer side of the arc-shaped abutting piece. A threaded hole is arranged at the end of the sliding rod. The air expansion strip is buckled on the top of the sliding rod. A sliding groove hole is arranged on the air expansion strip, and a positioning screw rod is arranged in the sliding groove hole. The positioning screw rod is threadedly connected in the threaded hole. An inner groove is arranged on the inner side of the air expansion strip, and a buffer spring is connected between the end of the sliding rod and the inner groove.
[0009] Preferably, a hidden groove is arranged on the outer side of the sliding groove hole, and the positioning screw rod abuts against the inner wall of the hidden groove.
[0010] Preferably, a plurality of wave grooves connected end to end are arranged on the bottom wall of the hidden groove, a buffer convex point is arranged on the lower side of the end of the positioning screw rod, and the buffer convex point slides and abuts in the wave groove.
[0011] Preferably, an adjusting abutting ring is sleeved on the outer side of the connecting end cover in a sliding manner, and the inner side of the adjusting abutting ring abuts against the end of the air expansion strip.
[0012] Preferably, an adjusting flange is arranged on the outer side of the connecting end cover, an adjusting screw rod is threadedly connected to the adjusting flange, and the front end of the adjusting screw rod abuts against the adjusting abutting ring.
[0013] Preferably, a return spring is connected between the adjusting abutting ring and the connecting end cover.
[0014] Preferably, detection rotating shafts are rotatably connected to the left and right sides of the frame. A connecting beam is arranged at the end of the detection rotating shaft, and a resisting guide roller is rotatably connected between the two connecting beams. A detection torsion spring is sleeved on the outer side of the detection rotating shaft, and a pressure sensor is installed on the frame. The detection torsion spring is connected between the pressure sensor and the detection torsion spring.
[0015] (III) Beneficial effects
[0016] The present utility model provides a PTFE film-coated filter material production device, which has the following beneficial effects:
[0017] 1. After the inflation balloon in the present utility model is inflated, the pneumatic expansion chip slides outward on the hollow main shaft and abuts against the pneumatic expansion strip connected to the sliding rod, so that the outer diameter of the pneumatic expansion half strip is too large to complete the locking of the pneumatic expansion shaft to the film coil. After the locking is completed, the adjusting abutting ring can be made to abut against the end of the pneumatic expansion strip by rotating the adjusting screw rod, so that the positioning screw rod is relative to the sliding groove hole, that is, the pneumatic expansion strip can be finely adjusted left and right on the hollow main shaft, so that the film coil on the film material expansion shaft can be aligned with the base material coil on the base cloth expansion shaft, avoiding wrinkles and bubbles in the hot press laminating. Brief Description of the Drawings
[0018] Figure 1 is a structural schematic diagram of a PTFE coated filter material production device of the present utility model;
[0019] Figure 2 is a structural schematic diagram of the film material expansion shaft in the present utility model;
[0020] Figure 3 is a partially enlarged view of the film material expansion shaft in the present utility model;
[0021] Figure 4 is a partial cross-sectional view of the film material expansion shaft in the present utility model.
[0022] In the figure: 1, frame; 2, base cloth expansion shaft; 3, film material expansion shaft; 4, hot press roller group; 5, guide roller 1; 6, guide roller 2; 7, detection rotating shaft; 8, connecting beam; 9, detection torsion spring; 10, hollow main shaft; 11, connecting end cover; 12, inflation balloon; 13, pneumatic expansion chip; 131, arc abutting piece; 132, sliding rod; 14, pneumatic expansion strip; 15, connecting shaft; 16, positioning screw rod; 17, sliding groove hole; 18, hidden groove; 19, buffer spring; 20, adjusting abutting ring; 21, adjusting flange; 22, adjusting screw rod; 23, return spring. Detailed Embodiment
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.
[0024] The embodiment of the present utility model provides a PTFE coated filter material production device,
[0025] Such as Figure 1As shown, it includes a frame 1, a base cloth expansion shaft 2 is connected to the lower front part of the frame 1, the base material coil is sleeved on the base cloth expansion shaft 2, a film material expansion shaft 3 is connected to the upper rear part of the frame 1, the film coil is sleeved on the film material expansion shaft 3, a winding expansion shaft is connected to the lower rear part of the frame 1, and the winding drum is sleeved on the winding expansion shaft, a hot pressing roller group 4 is arranged in the middle part of the frame 1, a guide roller 1 5 is arranged above the base cloth expansion shaft 2, the guide roller 1 5 is arranged on the front side of the hot pressing roller group 4, and a guide roller 2 6 is arranged on the rear side of the hot pressing roller group 4. The base cloth coil is wound around the guide roller 1 5 and then passed between the hot pressing roller groups 4. The film coil is overlapped on the upper side of the hot pressing roller group 4 and passed between the hot pressing roller groups 4. The film coil and the base cloth coil are aligned and attached together left and right, and the coated filter material is wound around the guide roller 2 6 and wound on the winding sleeve.
[0026] The left and right sides of the frame 1 are rotatably connected with detection shafts 7, the ends of the detection shafts 7 are provided with connecting beams 8, and a resistance guide roller is rotatably connected between the connecting beams 8 on both sides. A detection torsion spring 9 is sleeved on the outer side of the detection shaft 7, and a pressure sensor is installed on the frame 1. The detection torsion spring 9 is connected between the pressure sensor and the detection torsion spring 9. The resistance guide roller is in contact with the outer side of the film roll. Under the action of the detection torsion spring 9, the resistance guide roller always contacts the outer wall of the film roll as the outer diameter of the film roll gradually decreases during the coating process. In this process, the extension angle of the connecting beam 8 gradually decreases, that is, the torsional pressure on the torsion spring 9 gradually decreases. Until the set value is reached, it can be determined that the thickness of the film roll is zero, and the pressure sensor is used to control the production equipment to stop and replace the film roll.
[0027] like Figure 2 , 3 As shown in FIG. 4 , the film material expansion shaft 3 comprises a hollow main shaft 10, a connecting end cover 11, an inflatable bag 12, an inflatable core 13 and an inflatable strip 14. Both ends of the hollow main shaft 10 are provided with connecting flanges. The side wall of the hollow main shaft 10 is provided with a plurality of sliding holes. The inner flange of the connecting end cover 11 is connected to both ends of the hollow main shaft 10.
[0028] A connecting shaft 15 is arranged on the outer side of the connecting end cover 11, a connecting shaft 15 seat is installed on the frame 1, the connecting shaft 15 is rotatably connected to the connecting shaft 15 seat, the inflatable bag 12 is connected to the connecting end cover 11 on one side, an inflation valve is connected to the connecting end cover 11, the inflation valve is connected to the inflatable bag 12, the inflatable bag 12 is inserted into the hollow main shaft 10, and the inflatable bag 12 expands and fills the inner side of the hollow main shaft 10 after being inflated.
[0029] A number of inflatable chips 13 are provided. The number of inflatable chips 13 all abut against the outer wall of the inflatable bag 12. The inflatable chip 13 includes an arc-shaped abutting piece 131 and a number of sliding rods 132 evenly distributed on the outside of the arc-shaped abutting piece 131. The arc-shaped abutting pieces 131 are connected end to end to form a circle and sleeved on the outer wall of the inflatable bag 12. After the inflatable bag 12 is inflated and expanded, it abuts against the arc-shaped abutting piece 131, causing the arc-shaped abutting piece 131 to slide outwards. The sliding rod 132 is slidably connected and passes through the sliding hole, and the outer end protrudes outwards from the outer wall of the hollow main shaft 10. When the inflatable bag 12 expands, the sliding rod 132 can slide in and out of the sliding hole of the hollow main shaft 10 by squeezing the arc-shaped abutting piece 131. A threaded hole is provided at the end of the sliding rod 132. A number of inflatable slats 14 are included. The number of inflatable slats 14 are butt-jointed end to end to form a circle and cover the outside of the hollow main shaft 10. The inflatable slat 14 is buckled on the top of the sliding rod 132. A positioning screw 16 is passed through the inflatable slat 14. The positioning screw 16 is threadedly connected in the threaded hole, and the inflatable slat 14 can be installed on the top of the sliding rod 132. When the inflatable bag 12 expands, the inflatable slat 14 can slide outwards under the drive of the sliding rod 132 to realize the outward expansion of the inflatable shaft for fixing the film coil.
[0030] A sliding groove hole 17 is provided on the inflatable slat 14. The positioning screw 16 passes through the sliding groove hole 17. An inner groove is provided on the inner side of the inflatable slat 14. A buffer spring 19 is connected between the end of the sliding rod 132 and the inner groove. A hidden groove 18 is provided on the outside of the sliding groove hole 17. The positioning screw 16 abuts against the inner wall of the hidden groove 18. A number of wave grooves are provided at the bottom wall of the hidden groove 18 and are connected end to end. A buffer bump is provided on the lower side of the end of the positioning screw 16. The buffer bump slides and abuts in the wave groove.
[0031] As Figure 3As shown, an adjusting abutting ring 20 is sleeved on the outer side of the connecting end cover 11 in a sliding manner. The inner side of the adjusting abutting ring 20 abuts against the end of the end air-inflated slat 14. An adjusting flange 21 is arranged on the outer side of the connecting end cover 11. An adjusting screw rod 22 is threadedly connected to the adjusting flange 21. The front end of the adjusting screw rod 22 abuts against the adjusting abutting ring 20. A return spring 23 is connected between the adjusting abutting ring 20 and the connecting end cover 11. By rotating the adjusting screw rod 22, the adjusting abutting ring 20 can be extruded to make the adjusting abutment abut against the air-inflated slat 14, so that the sliding groove holes 17 of the air-inflated slat 14 and the adjusting screw rod 22 have relative displacement. Under the action of pressure, the buffer bumps abut against the outer wall of the wave groove. Through the wave groove arc abutting surface of the wave groove, the return spring 23 is extruded, forming a displacement space for the buffer bumps to slide in the wave groove. The left and right position adjustment of the air-inflated slat 14 after expanding and locking the film coil can be realized to ensure that the film coil and the base material coil are aligned left and right, and avoid wrinkles and bubbles during the film covering process.
[0032] Working process:
[0033] In the present utility model, the base material coil, the film coil and the winding sleeve are respectively sleeved on the base cloth expanding shaft 2, the film material expanding shaft 3 and the winding expanding shaft. The air inflation bag 12 is inflated to make the air inflation bag 12 expand. The outer wall of the inflation bag abuts against the arc abutting surface outward, so that the air-inflated slat 14 expands outward and locks the base material coil, the film coil and the winding sleeve under the supporting action of the sliding rod 132. It abuts against the outer wall of the film coil through the abutting guide roller, and the feeding tension of the film coil is applied by the extrusion of the torsion spring 9.
[0034] When there are inclined wrinkles on the film lapped on the surface of the hot pressing roller group 4 in the hot pressing film covering process of the film covering filter material, the left and right positions of the adjusting screw rods 22 on both sides can be rotated. By the adjusting screw rods 22 extruding the left and right positions of the adjusting abutting ring 20, the air-inflated slat 14 is extruded to make it slide left and right as a whole, so as to adjust the left and right positions of the film coil fixed on the outer side of the air-inflated slat 14, and make the left and right positions of the film coil align with the base material coil, avoiding position deviation during the hot pressing film covering process of the film coil.
[0035] 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 PTFE coated filter media production device, comprising a frame, characterized in that: A base fabric expansion shaft is connected to the lower part of the front side of the frame, a film material expansion shaft is connected to the upper part of the rear side of the frame, a hot pressing roller group is arranged in the middle of the frame, the film material expansion shaft includes a hollow main shaft, a connecting end cover, an air inflation bag, an air expansion chip and an air expansion strip, a connecting shaft is arranged on the outer side of the connecting end cover, the air inflation bag is connected to one of the connecting end covers, the air expansion chip includes an arc-shaped abutting piece and a plurality of sliding rods uniformly distributed on the outer side of the arc-shaped abutting piece, a threaded hole is arranged at the end of the sliding rod, the air expansion strip is buckled on the top of the sliding rod, a sliding groove hole is arranged on the air expansion strip, a positioning screw rod is arranged in the sliding groove hole, the positioning screw rod is threadedly connected in the threaded hole, an inner groove is arranged on the inner side of the air expansion strip, and a buffer spring is connected between the end of the sliding rod and the inner groove.
2. The PTFE film-coated filter material production equipment according to claim 1, wherein: A hidden groove is arranged on the outer side of the sliding groove hole, and the positioning screw rod abuts against the inner wall of the hidden groove.
3. The PTFE coated filter material production equipment according to claim 2, characterized in that: A plurality of wave grooves connected end to end are arranged on the bottom wall of the hidden groove, a buffer convex point is arranged on the lower side of the end of the positioning screw rod, and the buffer convex point slides and abuts in the wave groove.
4. The production equipment of a PTFE coated filter material according to claim 3, characterized in that: An adjusting abutting ring is sleeved on the outer side of the connecting end cover in a sliding manner, and the inner side of the adjusting abutting ring abuts against the end of the air expansion strip.
5. The PTFE film-coated filter material production equipment according to claim 4, wherein: An adjusting flange is arranged on the outer side of the connecting end cover, an adjusting screw rod is threadedly connected to the adjusting flange, and the front end of the adjusting screw rod abuts against the adjusting abutting ring.
6. The PTFE film-coated filter material production equipment according to claim 5, characterized in that: A return spring is connected between the adjusting abutting ring and the connecting end cover.
7. The production equipment of a PTFE coated filter material according to claim 6, characterized in that: Detection rotating shafts are rotatably connected to the left and right sides of the frame, a connecting beam is arranged at the end of the detection rotating shaft, a resisting guide roller is rotatably connected between the two connecting beams on both sides, a detection torsion spring is sleeved on the outer side of the detection rotating shaft, a pressure sensor is installed on the frame, and the detection torsion spring is connected between the pressure sensor and the connecting beam.