Ring clamp double-sealing type integrated forming die

Abstract

The utility model relates to the field of pipe fitting forming, in particular to a ring clamp double-sealing type integrated forming die, which comprises a lower die holder, a lower die fixed on the lower die holder, an upper die holder and an upper die fixed on the upper die holder, a lower cavity is arranged on the lower die, an upper cavity matched with the lower cavity is arranged on the upper die, and the upper die is provided with a lower cavity matched with the upper cavity. According to the die, a clamping and pressing sealing section is formed on a pipe fitting through the clamping and pressing cavity part in the die assembly process of the upper die and the lower die, and the pipe fitting part corresponding to the water expansion cavity part is expanded to form an annular pressure sealing section by filling water into the pipe fitting; according to the annular clamping sealing pipe fitting, the clamping sealing section and the annular pressing sealing section of the pipe fitting are integrally formed, the pipe fitting forming efficiency is greatly improved, the annular pressing sealing section is formed through water swelling, the smoothness and smoothness of the surface of an annular convex ring are greatly improved, the texture of the annular convex ring is more uniform, and therefore the overall quality of the annular clamping sealing pipe fitting is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe forming, and in particular to a ring clamp double-seal integrated forming mold. Background Technology

[0002] Ring-clamp sealing fittings are a connection method for thin-walled metal pipes. Combining the special structure of thin-walled metal pipes, they are suitable for socket-type (ring-clamp sealing) fittings with both elastic and filling sealing sections. This connection method adds a ring-shaped filling sealing compression method to the traditional extrusion connection, thus simultaneously providing both elastic and filling seals, improving the sealing performance and vibration resistance of the connection. Ring-clamp sealing fittings include a ring-compression sealing section (ring-shaped convex ring) and a clamping sealing section. Currently, the ring-compression and clamping sealing sections can only be formed manually through separate processing and expansion. This forming method has the following drawbacks: 1) Separate processing is not only very cumbersome and resource-intensive, but also extremely inefficient; 2) The ring-shaped convex ring formed by manual expansion often exhibits quality problems such as uneven texture and insufficient surface smoothness, thus affecting the overall quality of the ring-clamp sealing fitting. Therefore, there is an urgent need for a forming mold that can integrally form the ring-compression and clamping sealing sections and improve the quality of the fitting. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a ring-clamp double-seal integrated molding mold, which solves the problems existing in the prior art. This molding mold integrates the clamping sealing section and the ring-clamp sealing section of the pipe fitting, greatly improving the efficiency of pipe fitting molding. The ring-clamp sealing section is formed by water expansion, which not only greatly improves the smoothness and fluidity of the annular convex ring surface, making its texture more uniform, but also improves the overall quality of the ring-clamp sealing pipe fitting.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ring-type double-seal integrated molding die, comprising a lower die base, a lower die fixed on the lower die base, an upper die base, and an upper die fixed on the upper die base. The lower die has a lower cavity, and the upper die has an upper cavity that matches the lower cavity. Punch mechanisms are provided on both the left and right sides of the lower cavity.

[0007] Preferably, the punch mechanism includes a movable seat disposed on the side of the lower die, a groove is provided on the movable seat, a punch is fixed in the groove, a through hole is provided at the center of the punch, a water inlet passage is provided in the groove and connected to the through hole, and the water inlet of the water inlet passage is disposed on the movable seat.

[0008] Preferably, the punch includes a connector, the connector is fixed with a first connecting part, the first connecting part is fixed with a second connecting part, the second connecting part is fixed with a third connecting part, the outer diameter of the third connecting part is larger than the outer diameter of the second connecting part, and the outer diameter of the second connecting part is larger than the outer diameter of the first connecting part.

[0009] Preferably, a connecting seat is fixed on the movable seat, and the connecting seat is provided with a limiting hole. The limiting hole includes a first part and a second part. The diameter of the first part is equal to the outer diameter of the third connecting part, and the diameter of the second part is equal to the outer diameter of the second connecting part.

[0010] Preferably, two sets of grooves, punches, and connecting seats are provided on the movable seat.

[0011] Preferably, the connector includes a first frustum portion, the end of the first frustum portion closer to the lower mold is smaller, and the end farther away from the lower mold is larger, wherein a first fixing part is fixed to the end of the first frustum portion farther away from the lower mold, a first cylindrical portion is fixed to the first fixing part, a second frustum portion is fixed to the first cylindrical portion, a second fixing part is fixed to the second frustum portion, and a second cylindrical portion is fixed to the second fixing part.

[0012] Preferably, the outer wall of the first fixing part is set with an obtuse angle, the side wall of the second fixing part is set with an arc surface, and the end of the arc surface that connects to the second frustum part is lower than the end that connects to the second cylindrical part.

[0013] Preferably, there are two lower cavities on the lower mold, including a water-expanding cavity and a clamping cavity.

[0014] Preferably, there are two water-expanding cavities, namely a first water-expanding cavity and a second water-expanding cavity, and three clamping cavities, namely a first clamping cavity, a second clamping cavity and a third clamping cavity. The first clamping cavity is connected to the first water-expanding cavity, the first water-expanding cavity is connected to the second clamping cavity, the second clamping cavity is connected to the second water-expanding cavity, and the second water-expanding cavity is connected to the third clamping cavity.

[0015] Preferably, the water-expanded cavity is a semi-annular groove.

[0016] (III) Beneficial Effects

[0017] In this invention, the mold forms a compression sealing section on the pipe fitting through the compression cavity during the mold closing process of the upper and lower molds. By filling the pipe fitting with water pressure, the pipe fitting portion corresponding to the water expansion cavity is expanded to form a ring compression sealing section. The compression sealing section and the ring compression sealing section of the pipe fitting are integrally formed, which greatly improves the efficiency of pipe fitting forming. The ring compression sealing section is formed by water expansion, which not only greatly improves the smoothness and fluidity of the annular convex ring surface, making its texture more uniform, but also improves the overall quality of the ring compression sealing pipe fitting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0019] Figure 2 This is a schematic diagram of the punch mechanism of this utility model.

[0020] Figure 3 This is a disassembly diagram of the punch mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the punch of this utility model.

[0022] Figure 5 This is a schematic diagram of the punch of this utility model.

[0023] Figure 6 This is a schematic diagram of the connector of this utility model.

[0024] Figure 7 This is a schematic diagram of the connector of the punch of this utility model.

[0025] Figure 8 This is a schematic diagram of the lower mold and lower cavity of this utility model.

[0026] Figure 9 This is a schematic diagram of the lower mold and lower cavity of this utility model.

[0027] In the diagram: 1-Lower mold base, 2-Lower mold, 3-Upper mold base, 4-Upper mold, 5-Lower cavity, 6-Upper cavity, 7-Punch mechanism, 8-Modible seat, 9-Groove, 10-Punch, 11-Through hole, 12-Water inlet passage, 13-Water inlet, 14-Plug, 15-First connecting part, 16-Second connecting part, 17-Third connecting part, 18-Connecting seat, 19-Limiting hole, 20-First part, 21-Second part, 22-First frustum part, 23-First fixing part, 24-First cylindrical part, 25-Second frustum part, 26-Second fixing part, 27-Second cylindrical part, 28-Water-expanded cavity part, 29-Crimping cavity part, 30-First water-expanded cavity part, 31-Second water-expanded cavity part, 32-First crimping cavity part, 33-Second crimping cavity part, 34-Third crimping cavity part. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-9 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] This utility model provides a technical solution: a ring-type double-seal integrated molding die, including a lower die base 1, a lower die 2 fixed on the lower die base 1, an upper die base 3, and an upper die 4 fixed on the upper die base 3. The lower die 2 is provided with a lower cavity 5, and the upper die 4 is provided with an upper cavity 6 that matches the lower cavity 5. Punch mechanisms 7 are provided on both the left and right sides of the lower cavity 5. The punch mechanism 7 includes a movable seat 8 provided on the side of the lower die 2. The movable seat 8 has a groove 9. A punch 10 is fixed, and a through hole 11 is opened at the center of the punch 10. A water inlet passage 12 connected to the through hole 11 is opened in the groove 9. The water inlet 13 of the water inlet passage 12 is set on the movable seat 8. Two lower cavities 5 are set on the lower mold 2. The lower cavity 5 includes a water expansion cavity 28 and a clamping cavity 29. Oil cylinders are set on the top surface of the upper mold seat 3 and the outer surface of the movable seat 8. The water inlet 13 is connected to the water expansion machine. During operation, the straight cylindrical pipe is first placed in the lower cavity 5. Then, the hydraulic cylinders on the movable seats 8 on both sides of the pipe are activated simultaneously, pushing the movable seats 8 towards the pipe until the punches 10 on both sides of the pipe press against and seal the two ends of the pipe. This not only seals the two ends of the pipe but also positions and fixes it. Then, the hydraulic cylinder on the upper mold seat 3 is activated to push the upper mold 4 downward until the upper mold 4 and the lower mold 2 are closed. That is, the upper mold 4 is pressed onto the lower mold 2. The process of the upper mold 4 and the lower mold 2 closing is also a process of clamping the pipe. The clamping cavity 29 forms a clamping sealing section on the pipe. Then, the water expansion machine is activated to fill the pipe with water pressure, expanding the pipe part corresponding to the water expansion cavity 28 to form a ring-pressure sealing section. Water from the water-expanding machine enters the pipe fitting sequentially through inlet 13, inlet passage 12, and through hole 11. The shape of the water-expanding cavity 28 is half of an annular convex ring. The annular convex ring of the pipe fitting is formed by water expansion, greatly improving the smoothness and fluidity of the annular convex ring surface, thereby improving the overall quality of the ring-clamp sealing pipe fitting. The mold in this invention can integrally form the clamping sealing section and the ring-clamping sealing section of the pipe fitting. The ring-clamping sealing section is formed by water expansion, which not only improves the quality of pipe fitting formation but also greatly increases the efficiency of pipe fitting formation. It should be noted that the lower cavity 5 and the upper cavity 6 can be made into straight-through, tee, or elbow types according to specific needs.

[0030] The punch 10 includes a connector 14, a first connecting part 15 fixed to the connector 14, a second connecting part 16 fixed to the first connecting part 15, and a third connecting part 17 fixed to the second connecting part 16. The outer diameter of the third connecting part 17 is larger than the outer diameter of the second connecting part 16, and the outer diameter of the second connecting part 16 is larger than the outer diameter of the first connecting part 15. The connector 14 is designed to facilitate the insertion of the punch 10 into the pipe to seal the pipe. To ensure sealing, a sealing ring can be provided at the junction of the connector 14 and the first connecting part 15.

[0031] A connecting seat 18 is fixed on the movable seat 8. The connecting seat 18 is provided with a limiting hole 19. The limiting hole 19 includes a first part 20 and a second part 21. The diameter of the first part 20 is equal to the outer diameter of the third connecting part 17, and the diameter of the second part 21 is equal to the outer diameter of the second connecting part 16. The inner diameter of the groove 9 is equal to the outer diameter of the third connecting part 17, and the height of the groove 9 plus the height of the first part 20 is equal to the height of the third connecting part 17. Therefore, the setting of the groove 9, the first part 20, the second part 21, the second connecting part 16, and the third connecting part 17 effectively limits and fixes the punch 10, and also facilitates the installation and replacement of the punch 10.

[0032] The groove 9, punch 10 and connecting seat 18 are provided in two sets on the movable seat 8, so that two pipe fittings can be formed at one time, improving the efficiency of pipe fitting forming. In addition, depending on the specific situation, the groove 9, punch 10 and connecting seat 18 can also be provided in three, four or five sets on the movable seat 8.

[0033] The connector 14 includes a first frustum 22, which is smaller at the end near the lower mold 2 and larger at the end away from the lower mold 2. A first fixing part 23 is fixed to the end of the first frustum 22 away from the lower mold 2. A first cylindrical part 24 is fixed to the first fixing part 23. A second frustum 25 is fixed to the first cylindrical part 24. A second fixing part 26 is fixed to the second frustum 25. A second cylindrical part 27 is fixed to the second fixing part 26. This arrangement facilitates the insertion of the punch into the pipe fitting. The diameter of the second cylindrical part 27 is smaller than the diameter of the first connecting part 15, thus forming a step at the junction of the second cylindrical part 27 and the first connecting part 15. This step is used to fix the sealing ring, which greatly improves the sealing performance of the pipe end, thereby enhancing the water expansion effect.

[0034] The outer wall of the first fixing part 23 is set with an obtuse angle, and the side wall of the second fixing part 26 is set with an arc-shaped surface, and the end of the arc-shaped surface that connects to the second frustum part 25 is lower than the end that connects to the second cylindrical part 27.

[0035] There are two water-expanding cavities 28, namely the first water-expanding cavity 30 and the second water-expanding cavity 31, and three compression cavities 29, namely the first compression cavity 32, the second compression cavity 33 and the third compression cavity 34. The first compression cavity 32 is connected to the first water-expanding cavity 30, the first water-expanding cavity 30 is connected to the second compression cavity 33, the second compression cavity 33 is connected to the second water-expanding cavity 31, and the second water-expanding cavity 31 is connected to the third compression cavity 34. With this configuration, the formed pipe fitting will have three compression sealing sections and two ring compression sealing sections, and the compression sealing sections and ring compression sealing sections are alternately arranged, which greatly improves the sealing performance of the formed pipe fitting.

[0036] The water-expanded cavity 28 is a semi-annular groove. When the upper mold 4 and the lower mold 2 are closed, an annular groove will be formed. After the pipe is water-expanded, it will fill the annular groove and form an annular convex ring.

[0037] Working principle: During operation, the straight cylindrical pipe is first placed in the lower cavity 5. Then, the hydraulic cylinders on the movable seats 8 on both sides of the pipe are started simultaneously, pushing the movable seats 8 towards the pipe until the punches 10 on both sides of the pipe press against and seal the two ends of the pipe. This not only seals the two ends of the pipe, but also positions and fixes the pipe. Then, the hydraulic cylinder on the upper mold seat 3 is started to push the upper mold 4 downward until the upper mold 4 and the lower mold 2 are closed. That is, the upper mold 4 is pressed onto the lower mold 2. The process of the upper mold 4 and the lower mold 2 closing is also the process of clamping the pipe. The clamping cavity 29 forms a clamping sealing section on the pipe. Then, the water expansion machine is started to fill the pipe with water pressure, expanding the pipe part corresponding to the water expansion cavity 28 to form a ring-pressure sealing section. Water from the water-expanding machine enters the pipe fitting sequentially through inlet 13, inlet passage 12, and through hole 11. The shape of the water-expanding cavity 28 is half of an annular convex ring. The annular convex ring of the pipe fitting is formed by water expansion, greatly improving the smoothness and fluidity of the annular convex ring surface, thereby improving the overall quality of the ring-clamp sealing pipe fitting. The mold in this invention can integrally form the clamping sealing section and the ring-clamping sealing section of the pipe fitting. The ring-clamping sealing section is formed by water expansion, which not only improves the quality of pipe fitting formation but also greatly increases the efficiency of pipe fitting formation. It should be noted that the lower cavity 5 and the upper cavity 6 can be made into straight-through, tee, or elbow types according to specific needs.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ring-type double-seal integrated molding mold, characterized in that, It includes a lower mold base (1), a lower mold (2) fixed on the lower mold base (1), an upper mold base (3), and an upper mold (4) fixed on the upper mold base (3). The lower mold (2) is provided with a lower cavity (5), and the upper mold (4) is provided with an upper cavity (6) that matches the lower cavity (5). Punch mechanisms (7) are provided on both the left and right sides of the lower cavity (5).

2. The ring-clamp double-seal integrated molding die according to claim 1, characterized in that, The punch mechanism (7) includes a movable seat (8) disposed on the side of the lower die (2). A groove (9) is provided on the movable seat (8). A punch (10) is fixed in the groove (9). A through hole (11) is provided at the center of the punch (10). A water inlet passage (12) is provided in the groove (9) and communicates with the through hole (11). The water inlet (13) of the water inlet passage (12) is disposed on the movable seat (8).

3. The ring-clamp double-seal integrated molding die according to claim 2, characterized in that, The punch (10) includes a connector (14), the connector (14) is fixed with a first connecting part (15), the first connecting part (15) is fixed with a second connecting part (16), the second connecting part (16) is fixed with a third connecting part (17), the outer diameter of the third connecting part (17) is larger than the outer diameter of the second connecting part (16), and the outer diameter of the second connecting part (16) is larger than the outer diameter of the first connecting part (15).

4. The ring-clamp double-seal integrated molding mold according to claim 3, characterized in that, A connecting seat (18) is fixed on the movable seat (8). The connecting seat (18) is provided with a limiting hole (19). The limiting hole (19) includes a first part (20) and a second part (21). The diameter of the first part (20) is equal to the outer diameter of the third connecting part (17), and the diameter of the second part (21) is equal to the outer diameter of the second connecting part (16).

5. The ring-clamp double-seal integrated molding die according to claim 4, characterized in that, The groove (9), the punch (10), and the connecting seat (18) are provided in two sets on the movable seat (8).

6. The ring-clamp double-seal integrated molding die according to claim 4, characterized in that, The connector (14) includes a first frustum (22), which is smaller at one end near the lower mold (2) and larger at the other end away from the lower mold (2). A first fixing part (23) is fixed to the end of the first frustum (22) away from the lower mold (2), a first cylindrical part (24) is fixed to the first cylindrical part (24), a second frustum (25) is fixed to the first cylindrical part (24), a second fixing part (26) is fixed to the second frustum (25), and a second cylindrical part (27) is fixed to the second fixing part (26).

7. The ring-clamp double-seal integrated molding die according to claim 6, characterized in that, The outer wall of the first fixing part (23) is set to an obtuse angle, and the side wall of the second fixing part (26) is set to an arc surface, and the end of the arc surface connected to the second frustum part (25) is lower than the end connected to the second cylindrical part (27).

8. The ring-type double-seal integrated molding die according to claim 1, characterized in that, The lower cavity (5) is provided in two on the lower mold (2), and the lower cavity (5) includes a water-expanded cavity (28) and a clamping cavity (29).

9. The ring-clamp double-seal integrated molding die according to claim 8, characterized in that, Two water-expanding cavities (28) are provided, namely a first water-expanding cavity (30) and a second water-expanding cavity (31). Three clamping cavities (29) are provided, namely a first clamping cavity (32), a second clamping cavity (33) and a third clamping cavity (34). The first clamping cavity (32) is connected to the first water-expanding cavity (30). The first water-expanding cavity (30) is connected to the second clamping cavity (33). The second clamping cavity (33) is connected to the second water-expanding cavity (31). The second water-expanding cavity (31) is connected to the third clamping cavity (34).

10. A ring-type double-seal integrated molding die according to claim 8, characterized in that, The water-expanded cavity (28) is a semi-annular groove.

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