Polytetrafluoroethylene plate continuous processing line and process

Abstract

The invention relates to the technical field of polyfluortetraethylene plate processing, in particular to a polyfluortetraethylene plate continuous processing line and process, which comprises an annular guide rail, and further comprises a mold mechanism mounted on the annular guide rail, and a mold feeding mechanism, a net mounting mechanism and a preliminary forming mechanism which are mounted on the outer side of the annular guide rail and are sequentially arranged in the transfer direction of the annular guide rail; foaming liquid sprayed out first can be slightly thickened in the metal net trimming process, the situation that the metal net deviates from the center of the outer ring mold subsequently is reduced, the position of the metal net is limited through the vertical grooves in the inner ring mold rising process, the situation that the metal net deviates is further reduced, and the service life of the metal net is prolonged. Through precise control of the position of the metal net before foaming, the situation that the metal net deviates from the center of the metal net in a subsequent foaming plate is greatly reduced, and it is ensured that the metal net can serve as an effective functional layer to be successfully embedded into a product.

Description

Technical Field

[0001] This invention relates to the field of polytetrafluoroethylene (PTFE) sheet processing technology, and particularly to a continuous processing line and process for PTFE sheets. Background Technology

[0002] Polytetrafluoroethylene (PTFE) sheets are high-performance plastic sheets made from polytetrafluoroethylene resin. They possess excellent chemical resistance, high-temperature resistance, a low coefficient of friction, and good electrical insulation. Due to its unique molecular structure, PTFE sheets maintain stable physical properties even in extreme environments and are widely used in industries such as chemical, electronics, power, and food processing. They are not only corrosion-resistant and aging-resistant but also effectively prevent adhesion, making them suitable for use in sealing, gaskets, and lubricating materials.

[0003] The patent, with patent number CN120038804A and titled "Foamed Board and its Manufacturing Process," describes: "It includes a foamed board body, a polyurethane coating layer fixedly disposed on the outer wall of the foamed board body, and a silicone coating layer fixedly disposed on the outer wall of the polyurethane coating layer. The foamed board and its manufacturing process, through a cutting mechanism, can perform edge trimming and cutting processing on the cured foamed board, and can quickly switch between different cutting requirements, thereby improving the production efficiency of the foamed board body."

[0004] However, the above-mentioned device directly puts the foaming liquid into the mold after mixing, resulting in a relatively simple structure of pure foam material, which limits the application of foam board. Furthermore, the additional composite processing of the pure foam material reduces the production efficiency of the final foam product. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies. By placing a metal mesh on an inner mold, adding foaming liquid to the inner mold, trimming excess metal mesh, and then simultaneously lifting the inner mold upwards while injecting foaming liquid between the inner mold and the vertical groove, the problem of the metal mesh shifting off-center from the outer mold is mitigated. This results in the production of a high-strength polytetrafluoroethylene (PTFE) sheet with a metal mesh near the center of the sheet, thus solving the technical problems of limited applications of single foaming materials and low production efficiency caused by additional composite processing after foaming.

[0006] To address the above technical issues, the following technical solution is adopted: A continuous processing line and process for polytetrafluoroethylene sheet includes an annular guide rail, a mold mechanism mounted on the annular guide rail, and an upper mold mechanism, a mesh loading mechanism, and a preliminary forming mechanism that are sequentially arranged on the outside of the annular guide rail according to its transport direction. The mesh loading mechanism is used to fabricate and place metal mesh, including a lifting and rotating assembly that moves horizontally along the radial direction of the annular guide rail and a clamping assembly installed below the lifting and rotating assembly and moving vertically. The preliminary forming mechanism includes a trimming assembly that moves vertically up and down and horizontally along the radial direction of the annular guide rail, an injection assembly mounted above the annular guide rail, and a sorting assembly mounted in the horizontal direction of the trimming assembly.

[0007] Preferably, the mold mechanism includes: Mounting base, which is movably mounted on the mounting bracket of the annular guide rail; An outer ring mold, which is mounted on top of the mounting base; A limiting block is installed at the bottom of the mounting base, and the limiting block cooperates with a locking block that slides elastically on the mounting bracket to achieve locking; The inner ring mold is movably inserted into the top of the mounting base via an arc-shaped block installed at its bottom, and the inner ring mold achieves unobstructed upward separation from the trimmed metal mesh through the vertical groove on its inner sidewall. A sealing cap that movably covers the opening of the outer ring mold.

[0008] Preferably, the upper mold mechanism includes: Conveyor belt one, with a baffle installed on its side to prevent mold mechanism from falling off; A pressure plate, which is vertically slidably mounted on a baffle; An extrusion block is elastically slidably disposed at the bottom of the pressure plate, and the extrusion block cooperates with the positioning plate at the bottom of the baffle to achieve precise positioning of the mold mechanism; A receiving block is elastically slidably disposed on a baffle. Preferably, the lifting and transferring component includes: A support frame is horizontally slidably disposed above an annular guide rail, and multiple limiting rollers for limiting the metal wires are rotatably mounted on its bottom; A lifting frame, which is vertically and slidably mounted on a support frame; The guide column is rotatably mounted at the bottom of the lifting frame, and the guide column cooperates with the guide block on the support frame to achieve the action of sliding up and down and rotating at the same time; A lifting block is installed at the bottom end of the guide groove column.

[0009] Preferably, the clamping assembly includes: Two discharge pipes are respectively arranged in the transverse and longitudinal directions of the support frame; The frame is vertically slidably mounted at the bottom of the support frame; Two transverse clamping blocks are provided, one of which is elastically slidably disposed at the bottom of the frame near the transverse discharge pipe, and the other transverse clamping block is horizontally slidably disposed at the bottom of the frame. A transmission rod is horizontally slidably disposed within a transverse clamping block, and a clamping block mounted on the transmission rod cooperates with the transverse clamping block to achieve the clamping action of the metal wire. A longitudinal clamping block is laterally and horizontally slidably disposed at the bottom of the frame; A movable shell is elastically slidably disposed inside the longitudinal clamping block, and the movable shell cooperates with the clamping block 2 slidably disposed inside it to realize the longitudinal clamping action of the metal wire.

[0010] Preferably, the trimming component includes: A connecting frame, wherein a rotating frame is horizontally rotatably mounted at the bottom of the connecting frame; The trimmer is installed at the bottom of the rotating frame. The trimmer works with the slot on the inner ring mold to perform the insertion action. A clamping plate is installed on the side of the rotating frame. The clamping plate, together with the auxiliary plate installed on the connecting frame, realizes the clamping action of the trimmed metal mesh waste.

[0011] Preferably, the injection component includes: An outer injection tube is installed above an annular guide rail; The inner injection tube is mounted on the connecting frame.

[0012] Preferably, the sorting component includes: A screen, which is installed at an angle on the side of the trimming assembly away from the central axis of the annular guide rail; Conveyor belt two is installed on the side of the screen away from the annular guide rail.

[0013] Preferably, it also includes a lifting mechanism, which comprises: The outer rail is mounted on the outside of the annular guide rail. The inner rail is mounted on the annular guide rail and located inside the annular guide rail. The bracket is vertically slidably mounted on the mounting bracket.

[0014] As a preferred option, the following steps are included: Step 1: Mold mechanism mounting process. The ring guide rail transports the empty mounting frame to the bottom of the upper mold mechanism. Then, the upper mold mechanism conveys a mold mechanism to the top of the mounting frame for alignment. Next, the upper mold mechanism pushes the mold mechanism vertically downward to the mounting frame. Then, the ring guide rail drives the mold mechanism to the bottom of the mesh mounting mechanism to wait for the metal mesh to be mounted. Step 2, Metal Mesh Loading Process: The discharge pipe first ejects the transverse metal wires, then the clamping assembly stretches the transverse metal wires flat. Next, the lifting and rotating assembly lifts and twists the transverse metal wires at multiple points to form multiple torsion rings. Then, the discharge pipe ejects the longitudinal metal wires. The longitudinal metal wires pass through the torsion rings and are clamped by the clamping assembly. Then, the lifting and rotating assembly leaves the transverse metal wires. Under the pulling of the clamping assembly, a metal mesh is formed. Then, the metal mesh moves to the top of the mold mechanism and is lowered for placement. Then, the annular guide rail carries the mold mechanism to the bottom of the preliminary forming mechanism, waiting for the metal mesh to be trimmed and liquid injected. Step 3: Metal mesh trimming and liquid injection process. The injection component injects foaming liquid into the inner ring mold. Then, the trimming component cuts off the excess metal wires of the metal mesh and clamps the cut-off waste material. At the same time, the trimming component is vertically locked to restrict the inner ring mold. The inner ring mold is lifted by the trimming component. At the same time, the injection component injects foaming liquid between the inner ring mold and the outer ring mold, so that the newly opened annular cavity between the inner ring mold and the vertical groove is continuously and timely injected with foaming liquid. After the liquid injection is completed, the trimming component puts the waste material of the inner ring mold and the metal mesh into the sorting component for screening and collection. Then, the mold mechanism is carried and transported by the annular guide rail for sealing. Step 4, sealing process: During the transfer of the mold mechanism, the mold mechanism is lifted upward by the lifting mechanism until it is separated from the annular guide rail. Then the operator can seal the mold mechanism and remove the sealed mold mechanism and send it into the foaming chamber.

[0015] The beneficial effects of this invention are: (1) In this invention, foaming liquid is first injected into the inner ring mold through the preliminary forming mechanism, and then the excess part of the metal mesh is trimmed. The trimmed metal mesh can fall onto the foaming liquid in the center under the restriction of the vertical groove. The foaming liquid sprayed first will become slightly thicker during the metal mesh trimming process, which is beneficial to reduce the subsequent deviation of the metal mesh from the center of the outer ring mold. Then, during the process of lifting the inner ring mold, foaming liquid is injected into the newly opened annular cavity between the inner ring mold and the vertical groove. During the process of the inner ring mold rising, the position of the metal mesh will be restricted by the vertical groove, further reducing the deviation of the metal mesh. Through the precise control of the position of the metal mesh before foaming, the deviation of the metal mesh from its center in the subsequent foam board is greatly reduced, ensuring that the metal mesh can be successfully embedded in the product as an effective functional layer. The metal mesh near the center of the polytetrafluoroethylene board can improve the structural strength of the board, while the part of the outer ring without metal mesh is the polytetrafluoroethylene board, which is convenient for the outer ring to be cut and polished.

[0016] (2) In this invention, the metal mesh can be woven and placed on the inner ring mold by the mesh loading mechanism. The stability of the metal mesh is improved by weaving. Furthermore, the stable horizontal and vertical movement of the metal mesh, combined with the stable installation of the inner ring mold on the mounting base, allows the woven metal mesh to be directly and accurately placed on the inner ring mold without the need for intermediate turning, thus improving the production efficiency of polytetrafluoroethylene sheets.

[0017] (3) In this invention, the extrusion block can push the outer ring mold to the side where the vertical groove is located when the mold mechanism is pressed down, so that when the mounting seat leaves the baffle, it will also be able to fall close to the positioning plate, thereby ensuring the stability of the mold mechanism during the process of being installed on the ring guide rail.

[0018] (4) In this invention, the mold mechanism can be lifted to a certain height by the lifting mechanism, so that the mounting base and the mounting frame can be separated, which makes it easier for the operator to remove the mold mechanism and saves the operator's physical strength. As the mold mechanism is transported, the mold mechanism and the mounting frame are gradually separated. This process is relatively stable and avoids the situation where the foaming liquid and the metal mesh shake during the process of manually pulling the mold mechanism upward, thus causing the position of the metal mesh to shift, thereby improving the yield of polytetrafluoroethylene sheets.

[0019] In summary, this equipment has the advantages of high yield, high production efficiency, labor saving, and high structural strength of the polytetrafluoroethylene sheets produced. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is an enlarged schematic diagram of the annular guide rail and mold mechanism of the present invention.

[0023] Figure 3 This is a schematic diagram of the separation structure between part of the mold mechanism and the internal structure of the annular guide rail of the present invention.

[0024] Figure 4 This is an enlarged schematic diagram of the internal structure of the inner ring mold of the present invention.

[0025] Figure 5 This is an enlarged schematic diagram of part of the upper mold mechanism of the present invention.

[0026] Figure 6This is a schematic diagram of the partial separation structure of the upper mold mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the overall structure of the mesh loading mechanism of the present invention.

[0028] Figure 8 This is an enlarged structural schematic diagram of the lifting and rotating component of the present invention.

[0029] Figure 9 This is a magnified schematic diagram of part of the lifting and rotating components of the present invention.

[0030] Figure 10 This is a schematic diagram of the separation structure of the lifting and clamping components of the present invention.

[0031] Figure 11 This is a schematic diagram of the internal structure of a portion of the clamping component of the present invention.

[0032] Figure 12 This is a schematic diagram of the preliminary molding mechanism and part of the annular guide rail of the present invention.

[0033] Figure 13 This is a schematic diagram of a partial preliminary forming mechanism of the present invention.

[0034] Figure 14 This is a schematic diagram of the internal structure of a preliminary forming mechanism of the present invention.

[0035] Figure 15 This is an enlarged schematic diagram of the rotating frame and trimmer shears of the present invention.

[0036] Figure 16 This is a schematic diagram of the supporting mechanism, foaming liquid, metal mesh, and part of the mold mechanism of the present invention. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] Example 1 like Figures 1 to 12 As shown, a continuous processing line and process for polytetrafluoroethylene (PTFE) sheets includes an annular guide rail 8, a mold mechanism 1 installed on the annular guide rail 8, and an upper mold mechanism 2, a mesh loading mechanism 3, and a preliminary forming mechanism 4 installed on the outside of the annular guide rail 8 and arranged sequentially according to its transport direction. The mesh loading mechanism 3 is used to make and place the metal mesh 7, including a lifting and rotating assembly 31 that moves horizontally along the radial direction of the annular guide rail 8 and a clamping assembly 32 installed below the lifting and rotating assembly 31 and moving vertically. The preliminary forming mechanism 4 includes a trimming component 41 that moves vertically up and down and horizontally along the radial direction of the annular guide rail 8, an injection component 42 mounted above the annular guide rail 8, and a sorting component 43 mounted in the horizontal movement direction of the trimming component 41.

[0039] like Figure 1 As shown, it should be noted that the continuous processing line for polytetrafluoroethylene (PTFE) sheets in this embodiment also includes a frame and a drive mechanism. The upper mold mechanism 2, the mesh loading mechanism 3, the preliminary forming mechanism 4, and the lifting mechanism 5 are respectively installed on the frame. The drive mechanism consists of a pneumatic diaphragm pump, an electric telescopic rod, a hydraulic rod, and several servo motors. The continuous processing line for PTFE sheets in this embodiment also includes a host computer controller to control the coordinated operation of various components. The frame, drive mechanism, and controller are common knowledge to those skilled in the art and will not be described in detail here.

[0040] It is worth mentioning that the annular guide rail 8 includes a mounting bracket 83 that slides on the top of the annular frame 81, an internal gear ring 82 that is mounted on the inner side of the annular frame 81, a gear 84 that is horizontally rotatably mounted on the mounting bracket 83 and meshes with the internal gear ring 82, a roller 85 that is horizontally rotatably mounted on the mounting bracket 83 and rolls on the annular frame 81, and a locking block 86 that is elastically slidably mounted in the mounting bracket 83.

[0041] In this embodiment, preferably, as follows: Figures 1 to 16 As shown, the mold mechanism 1 includes: Mounting base 11 is movably mounted on the mounting bracket 83 of the annular guide rail 8; Outer ring mold 12 is mounted on top of mounting base 11; A limiting block 13 is installed at the bottom of the mounting base 11. The limiting block 13 cooperates with the elastically sliding locking block 86 on the mounting bracket 83 to achieve locking. The inner ring mold 14 is movably inserted into the top of the mounting base 11 via an arc-shaped block 15 installed at its bottom, and the inner ring mold 14 achieves unobstructed upward separation from the trimmed metal mesh 7 through the vertical groove 16 on its inner sidewall. The sealing cap 18 is movably closed at the opening of the outer ring mold 12.

[0042] Furthermore, the bottom of the mounting base 11 is provided with multiple insert rods. The insert rods can help the mounting base 11 stand stably, facilitate the transfer of the mold mechanism 1, and also increase the stability of the mounting base 11 when it is mounted on the mounting frame 83. In this embodiment, preferably, the arc-shaped block 15 can restrict the inner ring mold 14 from rotating horizontally relative to the mounting base 11, reducing the possibility of the inner ring mold 14 shifting during the subsequent trimming of the metal mesh 7, thus ensuring the stability of the mold. The inner ring mold 14 also provides support and protection for the metal mesh 7. When the foaming liquid 6 is injected into the inner ring mold 14 or the outer ring mold 12, the impact of the foaming liquid 6 on the position of the metal mesh 7 is reduced, ensuring the yield of the polytetrafluoroethylene sheet. The locking block 86 is locked on the limiting block 13, which makes it difficult for the mounting base 11 to move vertically relative to the mounting frame 83, thereby avoiding the situation where the mounting base 11 is driven when the inner ring mold 14 moves upward.

[0043] Preferred, such as Figures 1 to 6 As shown, the upper mold mechanism 2 includes: Conveyor belt 21, with a baffle 22 installed on the side of conveyor belt 21 to prevent mold mechanism 1 from falling; Pressure plate 23 is vertically slidably mounted on baffle 22; The extrusion block 24 is elastically slidably disposed at the bottom of the pressure plate 23, and the extrusion block 24 cooperates with the positioning plate 26 at the bottom of the baffle 22 to achieve precise positioning of the mold mechanism 1. The receiving block 25 is elastically slidably disposed on the baffle 22.

[0044] Furthermore, the lowest point of the positioning plate 26 is higher than the highest point of the mounting bracket 83 and the support 53. When the mounting seat 11 is installed on the mounting bracket 83, the top of the mounting seat 11 is higher than the lowest point of the positioning plate 26. This ensures that during the process of the mold mechanism 1 moving from the upper mold mechanism 2 to the mounting bracket 83, the mounting seat 11 is first restricted by the baffle 22 and will not shift. Then, it is pressed by the extrusion block 24 to be in close contact with the positioning plate 26 and will not shift. This ensures the accuracy of the falling path of the mounting seat 11 and ensures that the mounting seat 11 is successfully installed on the mounting bracket 83.

[0045] In this embodiment, preferably, the operator places the mounting base 11 on the conveyor belt 21, and then the conveyor belt 21, in conjunction with the mold mechanism 1 behind it, pushes the mold mechanism 1 closest to the annular guide rail 8 directly under the pressure plate 23. This eliminates the need for the operator to manually place the extrusion block 24 under the pressure plate 23, reducing the possibility of accidental injury to the operator's hands due to operational errors. At the same time, the operator does not need to keep up with the production rhythm of the equipment to place the mold mechanism 1. They only need to place the mold mechanism 1 on the conveyor belt 21, ensuring that there are at least two mold mechanisms 1 on the conveyor belt 21, which improves the convenience of the device's production. Furthermore, the operator places the mold mechanism 1 on the conveyor belt 21, which conveys the mold mechanism 1 downwards from the pressure plate 23. Under the pushing of the mold mechanism 1, the mold mechanism 1 closest to the annular guide rail 8 is positioned directly below the pressure plate 23. Subsequently, when the annular guide rail 8 controls the empty mounting bracket 83 to move directly below the pressure plate 23, the drive mechanism drives the pressure plate 23 to descend. As a result, the extrusion block 24 contacts the outer ring mold 12 and is extruded, causing the mold mechanism 1 to descend while having a certain tendency to move towards the side where the positioning plate 26 is located. As the mold mechanism 1 descends, the receiving block 25 can be extruded into the baffle 22, thereby releasing the support of the mold mechanism 1. Then, after the mounting seat 11 leaves the baffle 22, it resets. Next, the mounting seat 11 moves downwards close to the positioning plate 26 until the limiting block 13 is fully inserted into the mounting bracket 83. At this time, the locking block 86 locks into the limiting block 13 to restrict the upward movement of the mounting seat 11.

[0046] Furthermore, such as Figures 7 to 11 As shown, the lifting and transferring component 31 includes: Support frame 311 is horizontally slidably disposed above an annular guide rail 8, and multiple limiting rollers 312 for limiting the metal wire are rotatably mounted on its bottom; The lifting frame 313 is vertically and slidably mounted on the support frame 311; The guide column 315 is rotatably mounted at the bottom of the lifting frame 313, and the guide column 315 cooperates with the guide block 314 on the support frame 311 to achieve the action of sliding up and down and rotating at the same time. Lifting block 316 is installed at the bottom end of guide post 315.

[0047] Clamping assembly 32 includes: Two discharge pipes 321 are respectively installed in the transverse and longitudinal directions of the support frame 311; Frame 322 is vertically slidably mounted at the bottom of support frame 311; Two transverse clamping blocks 323 are provided. One transverse clamping block 323, which is close to the transverse discharge pipe 321, is elastically slidably disposed at the bottom of the frame 322, and the other transverse clamping block 323 is horizontally slidably disposed at the bottom of the frame 322. The transmission rod 324 is horizontally slidably disposed within the transverse clamping block 323, and the clamping block 325 installed on the transmission rod 324 cooperates with the transverse clamping block 323 to achieve the clamping action of the metal wire. The longitudinal clamping block 326 is horizontally slidably disposed at the bottom of the frame 322; The movable shell 327 is elastically slidably disposed inside the longitudinal clamping block 326, and the movable shell 327 cooperates with the clamping block 328 slidably disposed inside it to realize the longitudinal clamping action of the metal wire.

[0048] Furthermore, the equipment is equipped with two additional multi-wire feeders. During operation, the metal wires output by the multi-wire feeders are discharged through the discharge pipe 321 to the location of the clamping assembly 32. The multi-wire feeder is existing technology in the field and is not limited here, as long as it can complete the feeding of the set length of metal wire each time.

[0049] In this embodiment, preferably, the lifting and rotating component 31 can lift and rotate the corresponding position on the transverse metal wire to form a torsion ring. Then, the longitudinal metal wire is inserted into the torsion ring to form a metal mesh 7 that is not easily scattered. This facilitates subsequent trimming and liquid injection while also improving the structural strength of the polytetrafluoroethylene plate. In addition, the elastically sliding transverse clamping block 323 can automatically straighten the transverse metal wire. After the transverse metal wire is output, it will extend into the arc-shaped surface of the corresponding row of lifting blocks 316, thereby supporting the transverse metal wire and preventing the metal wire from bending under its own gravity after outputting a long metal wire. The transverse movement of the longitudinal clamping block 326 can reduce the mesh size of the metal mesh 7, thereby improving the structural strength of the subsequent polytetrafluoroethylene plate. Furthermore, the transverse discharge pipe 321 outputs metal wires. After passing through the elastically sliding transverse clamping block 323, the metal wires pass between the corresponding row of lifting blocks 316, and then enter the corresponding transverse clamping block 323 of the drive mechanism. Subsequently, the drive mechanism drives multiple clamping blocks 325 to clamp the corresponding metal wires via the transmission rod 324. After pulling the metal wires out to a suitable length, another transverse clamping block 323 clamps the corresponding metal wires. Then, the drive mechanism drives the lifting frame 313 to rise, and the lifting blocks 316 rise accordingly. During this process, the lifting blocks 316 are twisted to a certain extent under the cooperation of the guide block 314 and the guide groove post 315, which causes the transverse metal wires to form a corresponding... The torsion ring is then connected to the longitudinal discharge pipe 321, which outputs a metal wire. The metal wire passes through the hollow of the corresponding torsion ring via the longitudinal clamping block 326 and then enters another longitudinal clamping block 326. The drive mechanism then controls the corresponding clamping block 328 to clamp the longitudinal metal wire. The drive mechanism then controls the moving shell 327 to tighten, and at the same time, the longitudinal clamping block 326 moves to one side to form a small and compact metal mesh 7. The drive mechanism then moves the metal mesh 7 to above the corresponding inner ring mold 14. The drive mechanism then moves the metal mesh 7 down to be inserted into the inner ring mold 14. Finally, the transverse clamping block 323 and the longitudinal clamping block 326 release their clamping of the metal mesh 7.

[0050] In this application, as Figures 12 to 15 As shown, the trimming component 41 includes: Connecting frame 411, with a rotating frame 412 horizontally rotatably mounted at the bottom of the connecting frame 411; Repairing scissors 413 are installed at the bottom of the rotating frame 412. The repairing scissors 413 cooperate with the cutter slot 17 opened on the inner ring mold 14 to realize the insertion action. Clamping plate 414 is installed on the side of rotating frame 412. The clamping plate 414 works with the auxiliary plate 415 installed on the connecting frame 411 to clamp the trimmed metal mesh 7 waste. Injection component 42 includes: The outer injection tube 421 is installed above the annular guide rail 8; Inner injection tube 422 is mounted on connector 411.

[0051] Sorting component 43 includes: Screen 431 is installed at an angle on the side of the trimming assembly 41 away from the central axis of the annular guide rail 8; Conveyor belt 2 432 is installed on the side of screen 431 away from the annular guide rail 8.

[0052] Furthermore, the trimmer 413 includes a sharp part 4131 mounted on the rotating frame 412 and a pressure plate part 4132 mounted on the sharp part 4131. The sharp part 4131 is used to cut the metal wire and, after cutting, extends into the cutter groove 17 to facilitate the subsequent lifting of the cutter groove 17. This links the two operations together and improves processing efficiency.

[0053] In this embodiment, preferably, the screen holes on the screen 431 can screen the trimmed metal wires to the bottom and transport the inner ring mold 14 to the conveyor belt 432 to separate the two, so as to facilitate resource recycling and cleaning and reuse of the inner ring mold 14. Furthermore, after the annular guide rail 8 transfers the installed mold mechanism 1 to the corresponding position of the preliminary forming mechanism 4, the drive mechanism drives the connecting frame 411 to move into the outer ring mold 12, so that the trimming shears 413 extend into the inner ring mold 14. Then, the inner layer injection tube 422 injects a certain amount of foaming liquid 6 into the inner ring mold 14. Next, the drive mechanism drives the rotating frame 412 to rotate, and the clamping plate 414 and the auxiliary plate 415 receive and hold the excess metal wire. At the same time, the trimming shears 413 cuts the corresponding metal wire, and the trimming shears 413 finally extends into the corresponding cutter groove 17. Then, the trimmed metal mesh 7 is cut along the vertical groove 16. As the inner ring mold 14 descends, the drive mechanism pulls it upward. Simultaneously, the outer injection pipe 421 injects foaming liquid 6 between the inner ring mold 14 and the outer ring mold 12, filling the newly created annular gap in the rising inner ring mold 14. After the foaming liquid 6 is applied, the drive mechanism carries the inner ring mold 14 and the trimmed metal wire upward and moves horizontally above the screen 431. Then, the rotating frame 412 rotates in the opposite direction, causing the inner ring mold 14 and the trimmed metal wire to fall onto the screen 431. The metal wire then passes through the screen 431 and falls down. The inner ring mold 14 falls along the screen 431 onto the conveyor belt 432 and is transported.

[0054] In addition, such as Figure 16 As shown, it also includes a lifting mechanism 5, which includes: The outer rail 51 is mounted on the outside of the annular guide rail 8. The inner rail 52 is mounted on the annular guide rail 8 and is located inside the annular guide rail 8. Bracket 53 is vertically slidably mounted on mounting bracket 83.

[0055] Furthermore, after the foaming liquid 6 and the metal mesh 7 are injected, the mold mechanism 1 is then transported. Subsequently, the bracket 53, supported by the outer rail 51 and the inner rail 52, lifts the mold mechanism 1. Then, the operator can seal the sealing cap 18 on the outer mold 12. The mold mechanism 1 is then transported to a suitable environment for foaming. Then, the mounting bracket 83 can continue to move. When the bracket 53 is separated from the outer rail 51 and the inner rail 52, the bracket 53 falls under the action of gravity, and can then support the installation of a new mold mechanism 1.

[0056] Example 2 Based on the specific implementation method in Embodiment 1, it also includes, for example: Figure 1 and Figure 16 The following steps are shown: Includes the following steps: Step 1: Mold mechanism mounting process. The ring guide rail 8 transfers the empty mounting frame 83 to the lower part of the upper mold mechanism 2. Then, the upper mold mechanism 2 transfers a mold mechanism 1 to the upper part of the mounting frame 83 for alignment. Next, the upper mold mechanism 2 pushes the mold mechanism 1 vertically downward to the mounting frame 83. Then, the ring guide rail 8 drives the mold mechanism 1 to the lower part of the mesh mounting mechanism 3 to wait for the metal mesh to be mounted. Step 2, Metal Mesh Loading Process: First, the discharge pipe 321 ejects the transverse metal wires. Then, the clamping component 32 stretches the transverse metal wires flat. Next, the lifting and rotating component 31 lifts and twists the transverse metal wires at multiple points to form multiple torsion rings. Then, the discharge pipe 321 ejects the longitudinal metal wires. After the longitudinal metal wires pass through the torsion rings, they are clamped by the clamping component 32. Then, the lifting and rotating component 31 leaves the transverse metal wires. Under the pulling of the clamping component 32, the metal mesh 7 is formed. Then, the metal mesh 7 moves to the top of the mold mechanism 1 and then moves down for placement. Then, the annular guide rail 8 carries the mold mechanism 1 to the bottom of the preliminary forming mechanism 4, waiting for the metal mesh 7 to be trimmed and injected with liquid. Step 3: Metal mesh trimming and liquid injection process. The injection component 42 injects foaming liquid 6 into the inner ring mold 14. Then, the trimming component 41 cuts off the excess metal wires of the metal mesh 7 and clamps the cut-off waste. At the same time, the trimming component 41 is vertically locked and restricted to the inner ring mold 14. The inner ring mold 14 is lifted by the trimming component 41. At the same time, the injection component 42 injects foaming liquid 6 between the inner ring mold 14 and the outer ring mold 12, so that the newly opened annular cavity between the inner ring mold 14 and the vertical groove 16 is continuously and timely injected with foaming liquid 6. After the liquid injection is completed, the trimming component 41 puts the waste of the inner ring mold 14 and the metal mesh 7 into the sorting component 43 for screening and collection. Then, the mold mechanism 1 is carried and transported by the annular guide rail 8 to await sealing. Step 4, sealing process: During the transfer of mold mechanism 1, mold mechanism 1 is lifted upward by lifting mechanism 5 until it is separated from the annular guide rail 8. Then the operator can seal the mold mechanism 1 and remove the sealed mold mechanism 1 and send it into the foaming process.

[0057] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0058] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0059] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A continuous processing line for polytetrafluoroethylene (PTFE) sheets, comprising an annular guide rail (8), characterized in that, It also includes a mold mechanism (1) installed on the annular guide rail (8) and an upper mold mechanism (2), a mesh loading mechanism (3) and a preliminary forming mechanism (4) installed on the outside of the annular guide rail (8) and arranged in sequence according to its transport direction. The mesh loading mechanism (3) is used to make and place the metal mesh (7), including a lifting and rotating assembly (31) that moves horizontally along the radial direction of the annular guide rail (8) and a clamping assembly (32) installed below the lifting and rotating assembly (31) and moving vertically. The preliminary forming mechanism (4) includes a trimming assembly (41) that moves vertically up and down and horizontally along the radial direction of the annular guide rail (8), an injection assembly (42) mounted above the annular guide rail (8), and a sorting assembly (43) mounted in the horizontal direction of the trimming assembly (41).

2. The continuous processing line for polytetrafluoroethylene sheets according to claim 1, characterized in that, The mold mechanism (1) includes: Mounting base (11), which is movably mounted on the mounting bracket (83) of the annular guide rail (8); Outer ring mold (12), said outer ring mold (12) is mounted on top of mounting base (11); A limiting block (13) is installed at the bottom of the mounting base (11). The limiting block (13) cooperates with the elastically sliding locking block (86) on the mounting bracket (83) to achieve locking. The inner ring mold (14) is movably inserted into the top of the mounting base (11) by means of an arc-shaped block (15) installed at its bottom, and the inner ring mold (14) achieves unobstructed upward separation from the trimmed metal mesh (7) through the vertical groove (16) on its inner sidewall; A sealing cap (18) is movably closed at the opening of the outer ring mold (12).

3. The continuous processing line for polytetrafluoroethylene sheets according to claim 1, characterized in that, The upper mold mechanism (2) includes: Conveyor belt 1 (21), the side of which is equipped with a baffle (22) for placing the mold mechanism (1) to fall. Pressure plate (23), which is vertically slidably disposed on baffle (22); The extrusion block (24) is elastically slidably disposed at the bottom of the pressure plate (23), and the extrusion block (24) cooperates with the positioning plate (26) at the bottom of the baffle (22) to achieve precise positioning of the mold mechanism (1); The receiving block (25) is elastically slidably disposed on the baffle (22).

4. The continuous processing line for polytetrafluoroethylene sheets according to claim 1, characterized in that, The lifting and transferring component (31) includes: Support frame (311) is horizontally slidably disposed above the annular guide rail (8), and a plurality of limiting rollers (312) for limiting the metal wire are rotatably mounted on its bottom. A lifting frame (313) is vertically slidably mounted on a support frame (311); The guide column (315) is rotatably mounted at the bottom of the lifting frame (313), and the guide column (315) cooperates with the guide block (314) on the support frame (311) to achieve the action of sliding up and down and rotating at the same time. A lifting block (316) is installed at the bottom end of the guide post (315).

5. A continuous processing line for polytetrafluoroethylene sheets according to claim 4, characterized in that, The clamping assembly (32) includes: Two discharge pipes (321) are respectively arranged in the transverse and longitudinal directions of the support frame (311); A frame (322) is vertically slidably disposed at the bottom of a support frame (311); Two transverse clamping blocks (323), one of which is elastically slidably disposed at the bottom of the frame (322) near the transverse discharge pipe (321), and the other of which is horizontally slidably disposed at the bottom of the frame (322); The transmission rod (324) is horizontally slidably disposed in the transverse clamping block (323), and the clamping block (325) installed on the transmission rod (324) cooperates with the transverse clamping block (323) to realize the clamping action of the metal wire; A longitudinal clamping block (326) is laterally and horizontally slidably disposed at the bottom of the frame (322); The movable shell (327) is elastically slidably disposed inside the longitudinal clamping block (326), and the movable shell (327) cooperates with the clamping block two (328) slidably disposed inside it to realize the longitudinal metal wire clamping action.

6. The continuous processing line for polytetrafluoroethylene sheets according to claim 1, characterized in that, The trimming component (41) includes: A connecting frame (411) is provided with a rotating frame (412) at the bottom of the connecting frame (411). Repairing scissors (413), which are installed at the bottom of the rotating frame (412), and which cooperate with the cutter groove (17) on the inner ring mold (14) to realize the insertion action; The clamping plate (414) is installed on the side of the rotating frame (412). The clamping plate (414) works with the auxiliary plate (415) installed on the connecting frame (411) to achieve the clamping action of the trimmed metal mesh (7) waste.

7. A continuous processing line for polytetrafluoroethylene sheets according to claim 6, characterized in that, The injection component (42) includes: The outer injection tube (421) is installed above the annular guide rail (8); Inner injection tube (422), which is mounted on the connecting frame (411).

8. A continuous processing line for polytetrafluoroethylene sheets according to claim 7, characterized in that, The sorting component (43) includes: A screen (431) is installed at an angle on the side of the trimming assembly (41) away from the central axis of the annular guide rail (8); Conveyor belt two (432) is installed on the side of the screen (431) away from the annular guide rail (8).

9. A continuous processing line for polytetrafluoroethylene sheets according to claim 1, characterized in that, It also includes a lifting mechanism (5), which comprises: The outer rail (51) is mounted on the outside of the annular guide rail (8); The receiving inner rail (52) is mounted on the annular guide rail (8) and located inside the annular guide rail (8); Bracket (53) is vertically slidably mounted on mounting bracket (83).

10. The processing technology of a continuous processing line for polytetrafluoroethylene sheets according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Mold mechanism mounting process. The ring guide rail (8) transfers the empty mounting frame (83) to the lower part of the upper mold mechanism (2). Then the upper mold mechanism (2) transfers a mold mechanism (1) to the upper part of the mounting frame (83) for alignment. Then the upper mold mechanism (2) pushes the mold mechanism (1) to move vertically downward to the mounting frame (83). Then the ring guide rail (8) drives the mold mechanism (1) to move to the lower part of the mesh mounting mechanism (3) to wait for the metal mesh to be mounted. Step 2, metal mesh loading process: The discharge pipe (321) first spits out the horizontal metal wire, and then the clamping component (32) stretches the horizontal metal wire flat. Then the lifting and turning component (31) lifts and twists the horizontal metal wire to form multiple torsion rings. Then the discharge pipe (321) spits out the vertical metal wire. After the vertical metal wire passes through the torsion ring, it is clamped by the clamping component (32). Then the lifting and turning component (31) leaves the horizontal metal wire. Under the pulling of the clamping component (32), a metal mesh (7) is formed. Then the metal mesh (7) moves to the top of the mold mechanism (1) and then moves down for placement. Then the ring guide rail (8) carries the mold mechanism (1) to the bottom of the preliminary forming mechanism (4) to wait for the metal mesh (7) to be trimmed and injected with liquid. Step 3, metal mesh trimming and liquid injection process: The injection component (42) injects foaming liquid (6) into the inner ring mold (14), and then the trimming component (41) cuts off the excess metal wires of the metal mesh (7) and clamps the cut-off waste material. At the same time, the trimming component (41) and the inner ring mold (14) are vertically locked together and restricted. The inner ring mold (14) is lifted by the trimming component (41), and the foaming liquid (6) is injected between the inner ring mold (14) and the outer ring mold (12) by the injection component (42). The foaming liquid (6) is continuously and timely injected into the newly opened annular cavity between the inner ring mold (14) and the vertical groove (16). After the liquid injection is completed, the trimming component (41) puts the waste material of the inner ring mold (14) and the metal mesh (7) into the sorting component (43) for screening and collection. Then the mold mechanism (1) is carried and transported by the annular guide rail (8) to be sealed. Step 4, sealing process: During the transfer of the mold mechanism (1), the mold mechanism (1) is lifted up by the lifting mechanism (5) until it is separated from the annular guide rail (8). Then the operator can seal the mold mechanism (1) and remove the sealed mold mechanism (1) and send it into the foaming chamber.

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