A mold for making a u-shaped polytetrafluoroethylene seal

Abstract

The utility model relates to the technical field of polytetrafluoroethylene sealing piece processing, specifically relates to a mould for making U-shaped polytetrafluoroethylene sealing piece, including U-shaped mould mounting seat and strip mould mounting seat, the inside of U-shaped mould mounting seat and strip mould mounting seat all is provided with the mould part that carries out processing forming to U-shaped polytetrafluoroethylene sealing piece, in the utility model, personnel can be by the mould for making U-shaped polytetrafluoroethylene sealing piece is divided into detachable U-shaped mould mounting seat and strip mould mounting seat, and is used for the U-shaped section forming mould and strip section forming mould of forming and U-shaped mould mounting seat and strip mould mounting seat are also detachable fixed, therefore personnel can make the U-shaped polytetrafluoroethylene sealing piece of different size in a certain range through replacing U-shaped section forming mould and strip section forming mould, so can reduce the production cost of factory.

Description

Technical Field

[0001] This utility model relates to the field of polytetrafluoroethylene (PTFE) seal processing technology, specifically to a mold for manufacturing U-shaped PTFE seals. Background Technology

[0002] A U-shaped polytetrafluoroethylene (PTFE) seal is a sealing element made of polytetrafluoroethylene (PTFE) and molded into a U-shaped cross-section. It is commonly used in various sealing applications to prevent fluid leakage and ensure system sealing.

[0003] The existing U-shaped polytetrafluoroethylene (PTFE) seals are mostly made by filling PTFE resin powder into a mold, and then pressing and sintering to form the U-shaped PTFE seal. However, the existing U-shaped PTFE seal forming molds are mostly one-piece structures. Although this method makes it convenient for personnel to remove the sintered seals later, new molds need to be made when making different seals. This undoubtedly increases the production cost of the factory. Therefore, it still has certain shortcomings in practical applications.

[0004] In conclusion, it is necessary to invent a mold for manufacturing U-shaped polytetrafluoroethylene seals. Utility Model Content

[0005] Therefore, this utility model provides a mold for manufacturing U-shaped polytetrafluoroethylene seals, which solves the problem that new molds need to be made when manufacturing different seals, which would undoubtedly increase the production cost of the factory.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold for manufacturing U-shaped polytetrafluoroethylene (PTFE) seals, comprising a U-shaped mold mounting base and a strip mold mounting base, wherein the two strip mold mounting bases are respectively mounted on both sides of the front end of the outer wall of the U-shaped mold mounting base, and both the U-shaped mold mounting base and the strip mold mounting base are composed of a two-section structure, and both the U-shaped mold mounting base and the strip mold mounting base are provided with mold components for processing and forming U-shaped PTFE seals.

[0007] Preferably, the mold component includes a strip-shaped forming mold, and a second mold mounting groove is provided on each opposite side of the strip-shaped mold mounting base, and the outer wall of the strip-shaped forming mold is installed on the inner wall of the second mold mounting groove.

[0008] Preferably, a positioning block is fixed on the inner wall of the second mold mounting groove and on the side away from the forming end of the strip segment forming mold, and the outer wall side of the strip segment forming mold is connected to the outer wall of the positioning block by opening a groove.

[0009] Preferably, both sides of the outer wall of the strip mold mounting base are fixed with fixing blocks for fixing. Two adjacent fixing blocks are fixedly connected by bolts. Both sides of the outer wall of the strip mold mounting base and above the fixing blocks are threaded with side fixing bolts. The other side of each side fixing bolt passes through the inner wall side of the second mold mounting groove and is threadedly connected to a screw hole opened at the corresponding position on the outer wall side of the strip segment forming mold.

[0010] Preferably, the mold component further includes a U-shaped segment forming mold, and a first mold mounting groove is provided on the outer wall of the two U-shaped mold mounting seats on opposite sides and at the position corresponding to the strip mold mounting seat. The U-shaped segment forming mold is installed on the inner wall of the first mold mounting groove and communicates with the strip segment forming mold.

[0011] Preferably, each of the inner wall sides of the first mold mounting groove is fixed with a positioning post, and each of the outer walls of the U-shaped segment forming mold is provided with a positioning groove at a position corresponding to the positioning post. The outer walls of the positioning posts are connected to the inner walls of the corresponding positioning grooves. Each of the inner walls of the positioning posts is provided with a through screw hole, and each of the inner walls of the through screw hole is threaded with a fixing screw for fixing the U-shaped mold mounting base and the U-shaped segment forming mold.

[0012] Preferably, a positioning pin is fixed to the outer wall of any section of the U-shaped mold mounting base located outside the first mold mounting groove, and a positioning hole is opened in the other section of the U-shaped mold mounting base at the position corresponding to the positioning pin, and the positioning pin is inserted into the inner wall of the positioning hole.

[0013] Preferably, trapezoidal retaining strips are fixed on both sides of the outer wall of the U-shaped mold mounting base near the strip mold mounting base and on both sides of the first mold mounting groove. Trapezoidal slots are opened at the ends of the outer wall of the strip mold mounting base at positions corresponding to the trapezoidal retaining strips. The inner walls of the trapezoidal slots are slidably connected to the outer walls of the trapezoidal retaining strips.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, the mold for making U-shaped PTFE seals can be divided into a detachable U-shaped mold mounting base and a strip mold mounting base. The U-shaped segment forming mold and the strip segment forming mold used for forming are also detachably fixed to the U-shaped mold mounting base and the strip mold mounting base. Therefore, personnel can produce U-shaped PTFE seals of different sizes within a certain range by replacing the U-shaped segment forming mold and the strip segment forming mold. This reduces the production cost of the factory and makes it more convenient for personnel to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure of this utility model from a top view.

[0017] Figure 2 This is a schematic cross-sectional view of the strip mold mounting base in this utility model.

[0018] Figure 3 This is a partial structural schematic diagram of the U-shaped mold mounting base and the strip mold mounting base in the present invention, viewed from above.

[0019] Figure 4 This is a partial structural diagram of the U-shaped mold mounting base in this utility model, viewed from the front.

[0020] Figure 5 This is a three-dimensional structural diagram of the U-shaped mold mounting base in this utility model, viewed from the side.

[0021] Figure 6 This is a schematic diagram of the internal structure of the U-shaped mold mounting base in this utility model.

[0022] In the diagram: 100, U-shaped mold mounting base; 110, first mold mounting groove; 111, positioning post; 112, through screw hole; 120, positioning pin; 121, positioning hole; 130, trapezoidal retaining strip; 140, U-shaped segment forming mold; 200, strip mold mounting base; 210, fixing block; 220, strip segment forming mold; 221, positioning block; 230, side fixing bolt; 240, trapezoidal retaining groove. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] See attached document Figures 1-6This utility model provides a mold for manufacturing U-shaped polytetrafluoroethylene (PTFE) seals, comprising a U-shaped mold mounting base 100 and a strip-shaped mold mounting base 200. The two strip-shaped mold mounting bases 200 are respectively mounted on both sides of the front end of the outer wall of the U-shaped mold mounting base 100. After installation, the U-shaped mold mounting base 100 and the strip-shaped mold mounting base 200 form a U-shaped structure, thereby enabling the manufacture of U-shaped PTFE seals. Both the U-shaped mold mounting base 100 and the strip-shaped mold mounting base 200 are composed of a two-section structure. Both the U-shaped mold mounting base 100 and the strip mold mounting base 200 can be assembled into a whole by closing them up and down. Both the U-shaped mold mounting base 100 and the strip mold mounting base 200 have internal mold components for processing and forming U-shaped PTFE seals. These mold components include a strip segment forming mold 220, which can process and form strip segments of the U-shaped PTFE seals. Each side of the strip mold mounting base 200 has a second mold mounting groove. The outer wall of the strip segment forming mold 220 is installed on the inner wall of the second mold mounting groove. Positioning blocks 221 are fixed to the inner wall of the mold mounting slot on the side away from the forming end of the strip segment forming mold 220. The outer wall of the strip segment forming mold 220 is connected to the outer wall of the positioning blocks 221 by forming a groove. The positioning blocks 221 and the groove are provided to improve the stability of the strip segment forming mold 220 after it is installed in the second mold mounting slot. Fixing blocks 210 are fixed to both sides of the outer wall of the strip mold mounting base 200. Two adjacent fixing blocks 210 are fixedly connected by bolts. The fixing blocks 210 can be fixed to each other by bolts. The strip mold mounting base 200 is fixed together. Both sides of the outer wall of the strip mold mounting base 200 and above the fixing block 210 are threaded with side fixing bolts 230. The other side of the side fixing bolts 230 passes through the inner wall side end of the second mold mounting groove and is threadedly connected to the screw hole opened at the corresponding position of the outer wall side end of the strip segment forming mold 220. The side fixing bolts 230 are provided to fix the strip segment forming mold 220 to the second mold mounting groove from the side end, so as to ensure that the strip segment forming mold 220 can be stably fixed in the strip mold mounting base 200.

[0025] The mold component also includes a U-shaped segment forming mold 140. Each of the two U-shaped mold mounting bases 100 has a first mold mounting groove 110 on its opposite outer wall, corresponding to the position of the strip mold mounting base 200. The U-shaped segment forming molds 140 are installed on the inner wall of the first mold mounting groove 110 and communicate with the strip segment forming mold 220. The first mold mounting groove 110 is for installing the U-shaped segment forming mold 140. The U-shaped segment forming mold 140 is mainly used for processing and forming the U-shaped segment of the U-shaped polytetrafluoroethylene seal. Positioning posts 111 are fixed to the inner wall side of each of the first mold mounting grooves 110. The outer wall of the U-shaped forming mold 140 is provided with positioning grooves at positions corresponding to the positioning posts 111. The outer wall of the positioning posts 111 is connected to the inner wall of the corresponding positioning groove. The positioning posts 111 and positioning grooves are provided to improve the stability of the U-shaped forming mold 140 when installed in the first mold mounting groove 110. The inner wall of the positioning posts 111 is provided with through screw holes 112. The inner wall of the through screw holes 112 is threaded with fixing screws for fixing the U-shaped mold mounting base 100 and the U-shaped forming mold 140. Positioning screws are fixed to any section of the outer wall of the U-shaped mold mounting base 100 located outside the first mold mounting groove 110. The pin 120 and the other U-shaped mold mounting base 100 each have positioning holes 121 at positions corresponding to the positioning pin 120. The positioning pin 120 is inserted into the inner wall of the positioning hole 121. The positioning holes 121 and positioning pin 120 are provided to facilitate the connection of the two U-shaped mold mounting bases 100 together. The U-shaped mold mounting base 100 has screw holes for fixing at its corners. The U-shaped mold mounting base 100 improves its stability after splicing by setting locking bolts in the screw holes. The side outer wall of the U-shaped mold mounting base 100 near the strip mold mounting base 200 and located in the first mold mounting groove 110 Both sides are fixed with trapezoidal clips 130. The outer wall end of the strip mold mounting base 200 is provided with trapezoidal slots 240 at the corresponding positions of the trapezoidal clips 130. The inner wall of the trapezoidal slots 240 is slidably connected to the outer wall of the trapezoidal clips 130. The trapezoidal clips 130 and trapezoidal slots 240 are provided to facilitate personnel to install the strip mold mounting base 200 on the outer wall side of the U-shaped mold mounting base 100. At the same time, personnel can use the strip mold mounting base 200 to engage with the outer wall of the trapezoidal clips 130 by connecting the top and bottom, so that the strip mold mounting base 200 can be fixed with the U-shaped mold mounting base 100.

[0026] The usage process of this utility model is as follows: Those skilled in the art can first assemble the device according to the above description. Specifically, personnel can select appropriate U-shaped segment forming mold 140 and strip segment forming mold 220 according to the shape of the U-shaped polytetrafluoroethylene seal to be manufactured, and select U-shaped mold mounting base 100 and strip mold mounting base 200 that are compatible with its installation size. After completion, the U-shaped segment forming mold 140 can be taken out and installed on the inner wall of the first mold mounting groove 110. Then, the U-shaped segment forming mold 140 can be fixed on the inner wall of the first mold mounting groove 110 by screwing the bolts into the through screw hole 112. Then, the strip segment forming mold 220 can be taken out and installed in the second mold mounting groove, so that the positioning block 221 is engaged with the groove. Then, the side fixing bolt 230 can be taken out from the side end to fix the strip mold mounting base 200 and the strip segment forming mold 220.

[0027] After completion, the upper strip mold mounting base 200 can be slidably fastened to the trapezoidal clip 130 at the front end of the upper U-shaped mold mounting base 100 via the trapezoidal slot 240. The lower strip mold mounting base 200 can be fastened to the lower U-shaped mold mounting base 100. After fastening, the U-shaped segment forming mold 140 and the strip segment forming mold 220 will be aligned. Then, the polytetrafluoroethylene powder to be processed can be placed in the U-shaped segment forming mold 140 and the strip segment forming mold 220. After completion, the upper and lower sections of the U-shaped mold mounting base 100 and the strip mold mounting base 200 can be connected. The U-shaped mold mounting base 100 can be inserted through the positioning pin 120 and the positioning hole 121, and then bolts can be screwed on its corners for fixation. After the strip mold mounting base 200 is connected, the bolts can be removed and fixed by the fixing block 210. At this time, the mold is assembled and the polytetrafluoroethylene can be processed.

[0028] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A mold for manufacturing U-shaped polytetrafluoroethylene (PTFE) seals, characterized in that: It includes a U-shaped mold mounting base (100) and a strip mold mounting base (200). The two strip mold mounting bases (200) are respectively installed on both sides of the front end of the outer wall of the U-shaped mold mounting base (100). Both the U-shaped mold mounting base (100) and the strip mold mounting base (200) are composed of a two-section structure. The interior of both the U-shaped mold mounting base (100) and the strip mold mounting base (200) is provided with mold components for processing and forming U-shaped polytetrafluoroethylene seals.

2. The mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 1, characterized in that: The mold component includes a strip segment forming mold (220), and the strip mold mounting base (200) has a second mold mounting groove on each side of the opposite side. The outer wall of the strip segment forming mold (220) is installed on the inner wall of the second mold mounting groove.

3. The mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 2, characterized in that: The inner wall of the second mold mounting groove and the side away from the forming end of the strip segment forming mold (220) are fixed with positioning blocks (221), and the outer wall side of the strip segment forming mold (220) is connected to the outer wall of the positioning block (221) by opening a groove.

4. The mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 3, characterized in that: Both sides of the outer wall of the strip mold mounting base (200) are fixed with fixing blocks (210). Two adjacent fixing blocks (210) are fixedly connected by bolts. Both sides of the outer wall of the strip mold mounting base (200) and above the fixing blocks (210) are threaded with side fixing bolts (230). The other side of the side fixing bolts (230) passes through the inner wall side of the second mold mounting groove and is threadedly connected to the screw hole opened at the corresponding position of the outer wall side of the strip segment forming mold (220).

5. A mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 2, characterized in that: The mold component also includes a U-shaped segment forming mold (140). The outer walls of the two U-shaped mold mounting seats (100) on opposite sides and at positions corresponding to the strip mold mounting seat (200) are provided with first mold mounting grooves (110). The U-shaped segment forming molds (140) are all installed on the inner wall of the first mold mounting grooves (110) and communicate with the strip mold forming mold (220).

6. A mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 5, characterized in that: The inner wall of the first mold mounting groove (110) is fixed with a positioning post (111). The outer wall of the U-shaped segment forming mold (140) is provided with a positioning groove at the position corresponding to the positioning post (111). The outer wall of the positioning post (111) is connected to the inner wall of the positioning groove at the corresponding position. The inner wall of the positioning post (111) is provided with a through screw hole (112). The inner wall of the through screw hole (112) is threaded with a fixing screw for fixing the U-shaped mold mounting base (100) and the U-shaped segment forming mold (140).

7. A mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 6, characterized in that: A positioning pin (120) is fixed on the outer wall of any section of the U-shaped mold mounting base (100) located outside the first mold mounting groove (110). A positioning hole (121) is provided on the other section of the U-shaped mold mounting base (100) at the position corresponding to the positioning pin (120). The positioning pin (120) is inserted into the inner wall of the positioning hole (121).

8. A mold for manufacturing U-shaped polytetrafluoroethylene seals according to claim 7, characterized in that: The U-shaped mold mounting base (100) has trapezoidal clips (130) fixed on the outer wall of the side of the strip mold mounting base (200) and on both sides of the first mold mounting groove (110). The outer wall end of the strip mold mounting base (200) is provided with trapezoidal slots (240) at the corresponding positions of the trapezoidal clips (130). The inner wall of the trapezoidal slots (240) is slidably connected to the outer wall of the trapezoidal clips (130).

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