Water pressure expansion pipe forming device

Abstract

The utility model discloses a water pressure expansion pipe forming device which comprises a bottom plate, a bottom die is arranged at the top of the bottom plate, a top die is arranged at the top of the bottom die, a moving block used for moving the top die is arranged at the top of the top die, and a limiting assembly used for limiting the bottom die to move in the horizontal direction is arranged at the joint of the bottom plate and the bottom die. And a dismounting assembly is arranged at the joint of the top die and the moving block. Through the design of the limiting assembly, the connecting groove, the positioning grooves, the positioning threaded cylinders and the moving pieces, when the bottom die and the top die need to be installed, the bottom die is directly limited to the top of the bottom plate through the limiting assembly, then the top of the top die penetrates into the connecting groove, and the moving pieces drive the positioning threaded cylinders to move into the positioning grooves formed in the two sides of the top die; the top die is fixed through the positioning threaded cylinder, so that the bottom die and the top die are installed, and through the design, installation and replacement of the bottom die and the top die can be completed without the help.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a water pressure expansion pipe forming device. Background Art

[0002] The principle of the water pressure expansion tube forming device is to use the high-pressure water flow generated by the hydraulic system to exert pressure inside the metal pipe to cause it to deform, thereby achieving the purpose of forming.

[0003] When the metal pipe is subjected to water pressure expansion forming, the metal pipe is placed between two molds on the forming device, and then a high-pressure water flow is injected into the metal pipe. The metal pipe is extruded and deformed by the high-pressure water flow to complete the processing. When different pipes need to be processed, different molds need to be replaced. When the existing mold is fixed, the nut is moved on the screw rod, and the extrusion plate is driven by the nut to extrude and fix the mold. When the metal pipe is processed, other tools are needed to rotate the nut to complete the disassembly of the original mold and the installation and fixation of the new mold, so that when the mold needs to be replaced, it needs to be completed with the help of other tools, so that when the tool is lost, the mold cannot be replaced. Utility Model Content

[0004] The purpose of the utility model is to provide a water pressure expansion tube forming device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water pressure expansion tube forming device, comprising a bottom plate, a bottom mold is arranged on the top of the bottom mold, a top mold is arranged on the top of the bottom mold, a moving block for moving the position of the top mold is arranged on the top of the top mold, a limiting component for limiting the horizontal movement of the bottom mold is arranged at the connection between the bottom plate and the bottom mold, a disassembly component is arranged at the connection between the top mold and the moving block, the disassembly component includes a connecting groove opened at the bottom end of the moving block, positioning grooves are symmetrically opened on both sides of the top mold, a positioning threaded barrel for limiting the top mold from moving out of the connecting groove is inserted and connected inside the positioning groove, and a moving part for moving the position of the positioning threaded barrel is arranged on one side of the positioning threaded barrel.

[0006] Preferably, the movable part includes a screw threadedly inserted into the interior of the positioning threaded barrel, the inner walls on both sides of the connecting groove are symmetrically provided with movable cavities, the interior of the positioning threaded barrel is inserted into the interior of the movable cavity, and the interior of the movable cavity is provided with a limiting part for limiting the rotation of the positioning threaded barrel.

[0007] Preferably, the screw is inserted and connected to the inner wall of one side of the movable cavity, and twist caps for rotating the screw are symmetrically arranged on both sides of the movable block, and the twist cap is fixedly connected to one end of the screw, and a positioning ring is arranged on the inner wall of one side of the movable cavity, and the positioning ring is sleeved on the middle part of the screw.

[0008] Preferably, the limiting portion includes sliders symmetrically fixedly connected to the inner walls of the top and bottom ends of the movable cavity, and the top and bottom of the positioning threaded barrel are symmetrically provided with sliding grooves, and the positioning threaded barrel is slidably inserted and connected inside the sliding grooves.

[0009] Preferably, the limiting assembly includes a plurality of limit blocks which are centrally symmetrically fixedly connected to the top of the bottom plate, a plurality of limit grooves are centrally symmetrically opened at the bottom end of the bottom mold, and the plurality of limit blocks are respectively inserted and connected inside the plurality of limit grooves.

[0010] Preferably, a plurality of positioning pins are symmetrically fixedly connected to the top center of the bottom mold, a plurality of pin grooves are symmetrically opened at the bottom center of the top mold, and the plurality of positioning pins are respectively inserted and connected inside the plurality of pin grooves.

[0011] Preferably, pushing cylinders are symmetrically arranged on both sides of the bottom die, an extrusion die punch is arranged at the output end of the pushing cylinder, a water inlet pipe is arranged on the back side of the extrusion die punch, and a sealing rubber is arranged at one end of the extrusion die punch.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model adopts the design of limiting components, connecting grooves, positioning grooves, positioning threaded barrels and moving parts. When it is necessary to install the bottom mold and the top mold, the bottom mold is directly limited to the top of the bottom plate through the limiting components, and then the top of the top mold is inserted into the connecting grooves, and the positioning threaded barrels are driven by the moving parts to move into the positioning grooves provided on both sides of the top mold, and the position of the top mold is fixed by the positioning threaded barrels, thereby completing the installation of the bottom mold and the top mold. Through this design, the installation and replacement of the bottom mold and the top mold can be completed without assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front sectional structural schematic diagram of the utility model.

[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A.

[0016] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model.

[0017] Figure 4 It is a partial front cross-sectional structural schematic diagram of the utility model.

[0018] Figure 5 For this utility model Figure 4 The enlarged structural diagram of part B is shown in the figure.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the moving part of the utility model.

[0020] Figure 7 It is a front sectional structural schematic diagram of the bottom mold and the top mold of the utility model.

[0021] In the figure: 1. bottom plate; 2. bottom mold; 3. top mold; 4. moving block; 5. connecting groove; 6. positioning groove; 7. positioning threaded cylinder; 8. slide groove; 9. slider; 10. screw; 11. twist cap; 12. movable cavity; 13. positioning ring; 14. limit block; 15. limit groove; 16. pin groove; 17. positioning pin; 18. pushing cylinder; 19. extrusion die punch; 20. water inlet pipe; 21. sealing rubber. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-7 A water pressure expansion tube forming device shown in the figure includes a base plate 1, a base mold 2 is arranged on the top of the base plate 1, a top mold 3 is arranged on the top of the base mold 2, a moving block 4 for moving the position of the top mold 3 is arranged on the top of the top mold 3, a limiting component for limiting the horizontal movement of the base mold 2 is arranged at the connection between the base plate 1 and the base mold 2, a disassembly component is arranged at the connection between the top mold 3 and the moving block 4, the disassembly component includes a connecting groove 5 opened at the bottom end of the moving block 4, positioning grooves 6 are symmetrically opened on both sides of the top mold 3, and a positioning threaded cylinder 7 for limiting the top mold 3 from moving out of the connecting groove 5 is inserted and connected inside the positioning groove 6, and a moving part for moving the position of the positioning threaded cylinder 7 is arranged on one side of the positioning threaded cylinder 7.

[0024] Specifically, the movable part includes a screw 10 threadedly inserted into the interior of the positioning threaded barrel 7, and the inner walls on both sides of the connecting groove 5 are symmetrically provided with movable cavities 12. The interior of the positioning threaded barrel 7 is inserted into the interior of the movable cavity 12, and the interior of the movable cavity 12 is provided with a limiting part for limiting the rotation of the positioning threaded barrel 7.

[0025] It should be noted that the top of the bottom mold 2 and the bottom of the top mold 3 are provided with chambers for placing and forming metal pipes, and water inlet holes for high-pressure water to enter are provided on both sides of the chamber; the top of the movable block 4 is provided with a cylinder for driving the movable block 4 to move. When in use, the movable block 4 is driven to move by the cylinder, and the top mold 3 at the bottom is driven to move by the movable block 4. The limiting part is used to limit the rotation of the positioning threaded barrel 7. When the position of the positioning threaded barrel 7 needs to be moved, the screw 10 is rotated first, and the screw 10 drives the positioning threaded barrel 7, which is threadedly connected to it and cannot rotate, to move horizontally, thereby realizing the end of the positioning threaded barrel 7 being driven in and out of the positioning groove 6 by rotating the screw 10.

[0026] Furthermore, when the top mold 3 needs to be replaced, the screw 10 is first rotated to move the positioning threaded tube 7 out of the positioning grooves 6 on both sides of the top mold 3, and then the top of the top mold 3 is taken out from the inside of the connecting groove 5, and a new top mold 3 is replaced, and the top of the new top mold 3 is inserted into the inside of the connecting groove 5, and finally, the end of the positioning threaded tube 7 is driven by rotating the screw 10 to penetrate into the positioning groove 6 opened on the side of the top mold 3, and the position of the top mold 3 is fixed by the positioning threaded tube 7.

[0027] Specifically, the screw 10 is inserted and connected to the inner wall of one side of the movable cavity 12, and twist caps 11 for rotating the screw 10 are symmetrically arranged on both sides of the moving block 4. The twist cap 11 is fixedly connected to one end of the screw 10, and a positioning ring 13 is arranged on the inner wall of one side of the movable cavity 12. The positioning ring 13 is sleeved on the middle part of the screw 10.

[0028] It should be noted that the positioning ring 13 is fixedly sleeved in the middle of the screw 10, and one side of the positioning ring 13 is in contact with the inner wall of the movable cavity 12, but is not fixed to the movable cavity 12. When the screw 10 rotates, the positioning ring 13 rotates inside the movable cavity 12. The positioning ring 13 and the twist cap 11 are both used to limit the movement of the screw 10.

[0029] Furthermore, when the screw rod 10 needs to be rotated, the screw rod 10 located inside the movable cavity 12 is driven to rotate by the twist cap 11 arranged on one side of the moving block 4 .

[0030] Specifically, the limiting part includes a slider 9 symmetrically fixedly connected to the inner wall of the top and bottom ends of the movable cavity 12 , and a slide groove 8 is symmetrically opened on the top and bottom of the positioning threaded tube 7 , and the positioning threaded tube 7 is slidably inserted and connected inside the slide groove 8 .

[0031] It should be noted that the slider 9 is inserted and connected inside the slide groove 8. When the positioning threaded tube 7 is subjected to rotational force, the positioning threaded tube 7 with the slide groove 8 cannot rotate due to the restriction of the slider 9. When the positioning threaded tube 7 moves to the side away from the screw rod 10, the positioning threaded tube 7 drives the slide groove 8 to move. When the inner wall of one side of the slide groove 8 is fitted with one side of the slider 9, it is blocked by the slider 9, so that the positioning threaded tube 7 with the slide groove 8 cannot continue to move, and the moving distance of the positioning threaded tube 7 is limited by the slider 9.

[0032] Specifically, the limiting assembly includes a plurality of limit blocks 14 centrally and symmetrically fixedly connected to the top of the bottom plate 1 , a plurality of limit grooves 15 centrally and symmetrically opened at the bottom end of the bottom mold 2 , and the plurality of limit blocks 14 are respectively inserted and connected inside the plurality of limit grooves 15 .

[0033] It should be noted that at least four limit blocks 14 are set, and the number of limit grooves 15 is consistent with the number of limit blocks 14. When in use, the limit blocks 14 are inserted and connected to the bottom end of the bottom mold 2, so that the bottom mold 2 cannot move in the horizontal direction, so that the bottom mold 2 and the top mold 3 are aligned. When the bottom mold 2 needs to be replaced, the bottom mold 2 is moved upward so that the limit blocks 14 move out of the limit grooves 15 opened at the bottom of the bottom mold 2, and then the new bottom mold 2 is moved to the top of the bottom plate 1, and the limit blocks 14 on the top of the bottom plate 1 are aligned with the limit grooves 15 opened at the bottom of the new bottom mold 2, and finally the bottom mold 2 is moved downward so that the limit blocks 14 penetrate into the inside of the limit grooves 15, and the bottom mold 2 is restricted by multiple limit blocks 14, so that it cannot move in the horizontal direction, and the replacement of the bottom mold 2 is completed.

[0034] Specifically, a plurality of positioning pins 17 are symmetrically fixedly connected to the top of the bottom mold 2 , and a plurality of pin grooves 16 are symmetrically opened at the bottom of the top mold 3 . The plurality of positioning pins 17 are respectively inserted and connected inside the plurality of pin grooves 16 .

[0035] It should be noted that the top of the locating pin 17 is arc-shaped. When the top mold 3 moves downward, it first contacts the locating pin 17. The arc-shaped chamfer on the top of the locating pin 17 has a good guiding effect, allowing the locating pin 17 to penetrate into the interior of the pin groove 16, thereby making the top mold 3 and the bottom mold 2 fit accurately.

[0036] Specifically, push cylinders 18 are symmetrically arranged on both sides of the bottom mold 2, an extrusion die punch 19 is arranged at the output end of the push cylinder 18, a water inlet pipe 20 is arranged on the back of the extrusion die punch 19, and a sealing rubber 21 is arranged at one end of the extrusion die punch 19.

[0037] It should be noted that a high-pressure water pump is provided at one end of the water inlet pipe 20 away from the extrusion die punch 19, and at the same time, high-pressure liquid is provided to the extrusion die punch 19. The liquid is soapy water, which is injected into the pipe under high pressure. The soapy water has a good lubricating effect, thereby making the expanded tube easier to form and the surface effect of the resulting product is better.

[0038] Furthermore, when in use, the moving block 4 and the top mold 3 are first driven upward by the cylinder, and the metal pipe is placed in the cavity opened at the top of the bottom mold 2, and then the moving block 4 and the top mold 3 are driven to move to the top of the bottom mold 2 by the cylinder, and the metal pipe is wrapped by the cavity opened at the top of the bottom mold 2 and the bottom of the top mold 3, and then the pushing cylinder 18 is opened, and the pushing cylinder 18 drives one end of the extrusion die punch 19 to be inserted into the water inlet hole opened on the bottom mold 2 and the top mold 3, and finally the high-pressure water pump is turned on, and high-pressure water is injected into the metal pipe through the water inlet pipe 20 and the extrusion die punch 19, so that the metal pipe is pressurized and formed.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water pressure expansion tube forming device, comprising a bottom plate (1), a bottom mold (2) is arranged on the top of the bottom plate (1), a top mold (3) is arranged on the top of the bottom mold (2), and a moving block (4) for moving the top mold (3) is arranged on the top of the top mold (3), characterized in that: A limiting component for limiting the horizontal movement of the bottom mold (2) is provided at the connection between the bottom plate (1) and the bottom mold (2), and a disassembly component is provided at the connection between the top mold (3) and the moving block (4). The disassembly component comprises a connecting groove (5) provided at the bottom end of the moving block (4), and positioning grooves (6) are symmetrically provided on both sides of the top mold (3). A positioning threaded cylinder (7) for limiting the top mold (3) from moving out of the connecting groove (5) is inserted and connected inside the positioning groove (6), and a moving part for moving the position of the positioning threaded cylinder (7) is provided on one side of the positioning threaded cylinder (7).

2. A water-pressure expansion tube forming device according to claim 1, characterized in that: The movable member comprises a screw rod (10) threadably inserted into the interior of a positioning threaded barrel (7); movable cavities (12) are symmetrically provided on the inner walls on both sides of the connecting groove (5); the interior of the positioning threaded barrel (7) is inserted into the interior of the movable cavity (12); and a limiting portion for limiting the rotation of the positioning threaded barrel (7) is provided inside the movable cavity (12).

3. A water-pressure expansion tube forming device according to claim 2, characterized in that: The screw rod (10) is inserted and connected to the inner wall of one side of the movable cavity (12); twist caps (11) for rotating the screw rod (10) are symmetrically arranged on both sides of the moving block (4); the twist cap (11) is fixedly connected to one end of the screw rod (10); and a positioning ring (13) is arranged on the inner wall of one side of the movable cavity (12); the positioning ring (13) is sleeved on the middle part of the screw rod (10).

4. A water-pressure expansion tube forming device according to claim 2, characterized in that: The limiting portion comprises a sliding block (9) symmetrically fixedly connected to the inner wall of the top and bottom ends of the movable cavity (12); the top and bottom of the positioning threaded cylinder (7) are symmetrically provided with a sliding groove (8); the positioning threaded cylinder (7) is slidably inserted and connected inside the sliding groove (8).

5. A water-pressure expansion tube forming device according to claim 1, characterized in that: The limiting assembly comprises a plurality of limit blocks (14) centrally and symmetrically fixedly connected to the top of the bottom plate (1); a plurality of limit grooves (15) are centrally and symmetrically provided at the bottom end of the bottom mold (2); and the plurality of limit blocks (14) are respectively inserted and connected inside the plurality of limit grooves (15).

6. A water-pressure expansion tube forming device according to claim 1, characterized in that: The top end of the bottom mold (2) is centrally and symmetrically fixedly connected with a plurality of positioning pins (17), and the bottom end of the top mold (3) is centrally and symmetrically provided with a plurality of pin grooves (16), and the plurality of positioning pins (17) are respectively inserted and connected inside the plurality of pin grooves (16).

7. A water-pressure expansion tube forming device according to claim 1, characterized in that: Push cylinders (18) are symmetrically arranged on both sides of the bottom die (2); an extrusion die punch (19) is arranged at the output end of the push cylinder (18); a water inlet pipe (20) is arranged on the back of the extrusion die punch (19); and a sealing rubber (21) is arranged at one end of the extrusion die punch (19).

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