A press machine

Abstract

The present application relates to a kind of buckling machines, including the die for buckling pipe, die is arranged at least two along the circumferential direction of pipe, die is fan-shaped, and all dies are spliced into cylindrical body with inner diameter;And the mounting seat corresponding with die is provided, each mounting seat is detachably connected with die by dismounting component, and all mounting seats enclose mounting component, when the dismounting component moves along the radial direction of mounting seat, mounting seat and the die are in movable state, and adjusting component for tensioning mounting seat and adjusting the position of mounting seat, front die is matched with the front portion of mounting component;Back die is matched with the rear portion of mounting component, and the front portion and rear portion of mounting component are both cone.The buckling machine provided in the present application has small roundness error of buckling pipe, does not affect the assembly and use of pipe, and when different diameter pipes need to be buckled, the replacement of die is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of crimping machine manufacturing, in particular to a crimping machine. Background Art

[0002] A crimping machine is a hydraulic device used to crimp pipe assemblies. It applies a contractile force to the metal connector through the crimping machine's die, firmly crimping it onto the corresponding high-pressure oil pipes used in construction machinery or brake pipes, engine oil pipes, air conditioning pipes, and power pipes used in automobiles. The crimping machine is suitable for crimping various types of high- and low-pressure oil pipes, air pipes, water pipes, cable connectors, automotive air conditioning pipes, automotive power steering pipes, engine oil pipes, and fuel supply pipes, as well as construction accessories and household hot water and gas pipes. It is widely used in industries such as vehicles, construction machinery, hydraulic machinery, and welding and cutting equipment.

[0003] Among them, the horizontal crimping machine is a commonly used equipment for crimping pipes. During the use of the horizontal crimping machine, the mold needs to be replaced to adapt to different pipe bodies. Usually, the crimping of the workpiece is completed by the joint action of molds divided into an even number of blocks, for example, 8 blocks, 10 blocks, and 12 blocks, and each mold is installed on a mold mounting seat. At the beginning of the crimping, there is a gap between the molds. As the crimping process continues, the gap continues to decrease until the side walls of each mold fit together. During use, the gap distance between each mold is usually different, which makes the outer wall of the pipe unevenly stressed, and the roundness error of the crimped pipe is large, affecting the assembly and use of the pipe. On the other hand, if you want to crimp pipe bodies with different executions, you need to replace the mold of the corresponding diameter. The mold replacement in the existing technology is particularly difficult and the disassembly and assembly time is long. Summary of the Invention

[0004] To solve the above technical problems, the purpose of the present invention is to provide a crimping machine, which has a small roundness error of the crimped pipe fittings and will not affect the assembly and use of the pipe fittings. At the same time, when pipe fittings of different diameters need to be crimped, the mold can be replaced conveniently and quickly.

[0005] The technical solutions of the present invention are as follows:

[0006] A crimping machine includes a mold for crimping a pipe fitting, wherein at least two molds are evenly distributed along the circumference of the pipe fitting, the molds are fan-shaped, and all the molds are spliced ​​into a cylinder with an inner diameter;

[0007] and mounting seats corresponding to the mold, each of the mounting seats being detachably connected to the mold via a disassembly assembly, all of the mounting seats forming a mounting assembly, and when the disassembly assembly moves along the radial direction of the mounting seat, the mounting seat and the mold are in a movable state;

[0008] and an adjustment assembly for tightening the mounting seat and adjusting the position of the mounting seat;

[0009] a front mold that cooperates with the front portion of the mounting assembly;

[0010] a rear mold that cooperates with the rear portion of the mounting assembly;

[0011] The front and rear parts of the mounting assembly are both cones.

[0012] Preferably, the adjustment assembly includes a first pull rod connected to the mounting seat;

[0013] an inner ring threadably connected to the first tie rod;

[0014] a second tie rod connected to the outer side wall of the inner ring;

[0015] An adjustment plate is threadedly connected to the second pull rod, and the adjustment plate is located at a center position in the axis direction of the mounting seat and the mold.

[0016] Preferably, a first spring is provided between adjacent mounting seats, and the first spring is placed inside two adjacent mounting seats.

[0017] Preferably, the adjustment assembly includes a first fixing plate for fixing the front mold; and a second fixing plate for fixing the rear mold;

[0018] The second fixing plate, the first fixing plate and the adjusting plate are parallel to each other.

[0019] Preferably, the adjustment assembly includes a guide shaft passing through the second fixing plate, the adjustment plate and the first fixing plate;

[0020] A second spring and a third spring are respectively provided on both sides of the adjustment plate;

[0021] The second spring and the third spring are both sleeved on the guide shaft.

[0022] Preferably, a transition plate is provided in the direction in which the guide shaft is away from the mold;

[0023] One end of the transition plate abuts against the second fixing plate;

[0024] A flange is detachably connected to the transition plate, and the flange is connected to the telescopic end of the oil cylinder assembly.

[0025] Preferably, the disassembly assembly includes a pin shaft with one end cooperating with the mold, and the outer wall of the pin shaft is engaged with the mounting seat;

[0026] and a locking unit for limiting the movement of the pin shaft along its axial direction.

[0027] Preferably, a clamp is provided on the other end of the pin;

[0028] The locking unit includes a lock buckle with one end engaged with the clamping member;

[0029] A transverse pin having one end connected to the other end of the lock catch;

[0030] And a nut is arranged at the other end of the transverse pin, and the outer wall of the nut is threadedly connected to the mounting seat.

[0031] Preferably, the lock is a U-shaped fork, the clamping member is a first short shaft that is clamped between the outer arm and the U-shaped fork, a blocking member is provided on the end of the first short shaft, and the blocking member is provided below the U-shaped fork.

[0032] Preferably, a first accommodating cavity is provided inside the mounting seat, and the first accommodating cavity is used to accommodate the fourth spring;

[0033] The fourth spring is sleeved on the outer wall of the transverse pin, and one end of the fourth spring abuts against the end of the nut, and the other end abuts against the side wall of the accommodating cavity.

[0034] The crimping machine provided by the present invention has the following beneficial effects: during the crimping process, the rear die is pushed axially toward the front die. Because both the front and rear dies are conical and cooperate with the mounting assembly, the axial thrust of the rear die is converted into a radial contraction force. In the die mounting structure provided by the present application, each die is connected to a mounting seat. Each mounting seat is subjected to different forces. The gravity of the upper mounting seat is different from that of the lower mounting seat. Therefore, each mounting seat needs to be subjected to a different tensioning force. By tightening the mounting seat by adjusting the mounting seat and adjusting the radial position of the mounting seat, the gap between the mounting seats (i.e., the gap between the dies) is made uniform. Therefore, the crimping machine provided by the present application reduces the roundness error of the crimped pipe fittings, which does not affect the assembly and use of the pipe fittings. Furthermore, each mounting seat is detachably connected to the die by a disassembly assembly. Once the disassembly assembly is moved in the radial direction of the mounting seat, the die can be removed from the mounting seat. Therefore, the crimping machine provided by the present application facilitates the quick and easy replacement of dies when crimping pipe fittings of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1A schematic structural diagram of a crimping machine provided in an embodiment of the present invention;

[0037] Figure 2 A schematic structural diagram of a mold installation structure provided by an embodiment of the present invention;

[0038] Figure 3 This is a structural schematic diagram of the mold installation structure provided by an embodiment of the present invention.

[0039] Figure 4 A schematic diagram of the structure of a disassembly assembly provided in an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the structure of a disassembly assembly provided in an embodiment of the present invention;

[0041] Figure 6 A cross-sectional view of a disassembled assembly provided in an embodiment of the present invention.

[0042] Explanation of the numbers in the accompanying drawings: 1. Mould; 2. Front mould; 3. Rear mould; 4. First pull rod; 5. Inner ring; 6. Second pull rod; 7. Adjustment plate; 8. First spring; 9. First fixing plate; 10. Second fixing plate; 11. First limit block; 12. Second limit block; 13. Guide shaft; 14. Second spring; 15. Third spring; 16. Nut; 17. Transition plate; 18. Flange; 19. Cylinder assembly; 20. V-shaped seat; 22. Mounting seat; 23. Disassembly assembly; 24. Pin; 25. Clamp; 26. Cross pin; 27. Nut; 28. Lock; 29. ​​First short shaft; 30. Blocking member; 31. Fourth spring. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0044] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0045] Please Figures 1 to 6As shown, the present invention provides a crimping machine, including a mold 1 for crimping pipe fittings, at least two of the molds 1 are evenly distributed along the circumferential direction of the pipe fitting, the mold 1 is fan-shaped, and all the molds 1 are spliced ​​into a cylinder with an inner diameter; and a mounting seat 22 corresponding to the mold 1, each of the mounting seats 22 is detachably connected to the mold 1 through a disassembly assembly 23, and all the mounting seats 22 form a mounting assembly, when the disassembly assembly 23 moves along the radial direction of the mounting seat 22, the mounting seat 22 and the mold 1 are in a movable state; and an adjustment assembly for tightening the mounting seat 22 and adjusting the position of the mounting seat 22; a front mold 2 that cooperates with the front of the mounting assembly; a rear mold 3 that cooperates with the rear of the mounting assembly; the front and rear of the mounting assembly are both cones. During the crimping process, the rear die is pushed axially toward the front die. Since both the front and rear dies are conical and cooperate with the mounting assembly, the axial thrust of the rear die is converted into a radial contraction force. In the die mounting structure provided by the present application, each die is connected to a mounting seat. Each mounting seat is subjected to different forces. The gravity of the upper mounting seat is different from that of the lower mounting seat. Therefore, each mounting seat needs to be subjected to a different tensioning force. By tightening the mounting seat by adjusting the assembly and adjusting the position of the mounting seat in the radial direction, the gap between the mounting seats (i.e., the gap between the dies) is made the same. Therefore, the crimping machine provided by the present application makes the roundness error of the crimped pipe fittings small and does not affect the assembly and use of the pipe fittings. On the other hand, each mounting seat is detachably connected to the mold by a disassembly assembly. Once the disassembly assembly is moved in the radial direction of the mounting seat, the mold can be removed from the mounting seat. Therefore, the crimping machine provided by the present application is convenient and quick to replace the mold when crimping pipe fittings of different diameters.

[0046] The adjustment assembly includes a first tie rod 4 connected to the mounting seat 22, an inner ring 5 threadedly connected to the first tie rod 4, a second tie rod 6 connected to the outer wall of the inner ring 5, and an adjustment plate 7 threadedly connected to the second tie rod 6. The adjustment plate 7 is located axially centered between the mounting seat 22 and the mold 1. The inner ring 5 is concentrically arranged with the mounting assembly. The mounting seat 22 and the first tie rod 4 are threadedly connected via the first tie rod 4. By tightening the first tie rod 4 by a certain number of threads, the axial position of the mounting seat 22 and the mold 1 can be adjusted with high precision. The inner ring 5 is then connected to the adjustment plate 7 via the second tie rod 6 to adjust the position of the inner ring 5. Preferably, an elastic member, such as a spring, is sleeved around the first tie rod 4. One end of the spring rests against the first tie rod 4, while the other end rests against the bottom of a spring-receiving groove located within the inner ring 5. The spring facilitates removal of the mounting seat 22.

[0047] Preferably, a first spring 8 is provided between adjacent mounting seats 22 , and the first spring 8 is placed inside two adjacent mounting seats 22 , also to balance the gaps between the molds 1 .

[0048] At least two first springs 8 are arranged along the axial direction of the mold 1 so that the force on the axis of the mold 1 is also balanced.

[0049] In the embodiment provided herein, the adjustment assembly includes a first fixing plate 9 for securing the front mold 2, and a second fixing plate 10 for securing the rear mold 3. The second fixing plate 10, the first fixing plate 9, and the adjustment plate 7 are parallel. The first and second fixing plates 9, 10 respectively secure the front mold 2 and the rear mold 3, and are arranged parallel to the adjustment plate 7. Both plates ensure that the front mold 2 and the rear mold 3 are in constant contact with the outer wall of the mounting assembly, preventing the front mold 2 and the rear mold 3 from moving during pressing.

[0050] A first stopper 11 is provided on the side of the first fixing plate 9, and a second stopper 12 is provided on the end of the first fixing plate 9. The first and second stoppers 11, 12 are provided to ensure the positioning reference of the first fixing plate 9 in the horizontal and vertical directions of the horizontal plane. The parallel arrangement of the first and second positioning plates and the adjustment plate 7 ensures that their center lines coincide with the center line of the mold 1, which can further improve the roundness accuracy of the pipe after crimping.

[0051] In the embodiment provided by the present invention, a guide shaft 13 is included that passes through the second fixing plate 10, the adjustment plate 7, and the first fixing plate 9. A second spring 14 and a third spring 15 are respectively provided on either side of the adjustment plate 7. The second spring 14 and the third spring 15 are both sleeved on the guide shaft 13. Preferably, the second spring 14 and the third spring 15 have the same expansion and contraction rate and length. The second spring 14, the third spring 15, and the connection relationship with the guide shaft 13 are designed to ensure that the distance between the first fixing plate 9 and the adjustment plate 7, and the distance between the second fixing plate 10 and the adjustment plate 7 are the same, so that there will be no difference in the front and back movement distances, and no bell mouth will appear. With the adjustment plate 7 as the center, the distance between the two sides is the same, and there will be no situation where the front is larger and the back is smaller, or the other way around.

[0052] A nut 16 is provided at one end of the guide shaft 13 near the first fixing plate 9. The nut 16 is threadedly connected to the guide shaft 13 and abuts against the first fixing plate 9. The provision of the nut 16 prevents the mounting assembly from being subjected to excessive force during the buckling process, preventing the first fixing plate 9 from detaching from the guide shaft 13.

[0053] In the embodiment provided by the present invention, a transition plate 17 is provided in the direction of the guide shaft 13 away from the mold 1, one end of the transition plate 17 is abutted against the second fixed plate 10, and a flange 18 is detachably connected to the transition plate 17, and the flange 18 is connected to the telescopic end of the cylinder assembly 19, so that the rear mold 3 and the cylinder assembly 19 are reliably connected.

[0054] Among them, a V-shaped seat 20 is provided at the bottom of the cylinder assembly 19 to ensure that the position of the cylinder assembly 19 is fixed and does not shake during the buckling process.

[0055] The invention comprises a mold 1 for crimping pipe fittings, wherein at least two molds 1 are evenly distributed along the circumferential direction of the pipe fittings, and the molds 1 are fan-shaped. All the molds 1 are spliced ​​into a cylinder with an inner diameter, and a mounting seat 22 is provided corresponding to the mold 1. Each mounting seat 22 is detachably connected to the mold 1 through a disassembly assembly 23. When the disassembly assembly 23 moves along the radial direction of the mounting seat 22, the mounting seat 22 and the mold 1 are in a movable state. Compared with the prior art, the crimping machine provided by the present application has each mounting seat 22 detachably connected to the mold 1 through a disassembly assembly 23. Once the disassembly assembly 23 moves along the radial direction of the mounting seat 22, the mold 1 can be removed from the mounting seat 22. Therefore, the crimping machine provided by the present application is convenient and quick to replace the mold 1 when crimping pipe fittings of different diameters.

[0056] The disassembly assembly 23 includes a pin 24 with one end engaged with the mold 1. The outer wall of the pin 24 engages with the mounting seat 22, and a locking unit restricts the movement of the pin 24 along its axis. The axis of the pin 24 is parallel to the radial direction of the mounting seat 22. The outer wall of the pin 24 engages with the mounting seat 22, either through tensioning or threaded connection. By locking the pin 24, the locking unit ensures that the mold 1 always has the tension provided by the pin 24, thereby securing the mold 1 and the mounting seat 22.

[0057] Preferably, a clamping member 25 is provided on the other end of the pin 24. The locking unit includes a lock catch 28 having one end engaged with the clamping member 25, a transverse pin 26 having one end connected to the other end of the lock catch 28, and a nut 27 provided at the other end of the transverse pin 26. The outer wall of the nut 27 is threadedly connected to the mounting seat 22. The threaded connection between the nut 27 and the mounting seat 22 and the clamping connection between the lock catch 28 and the clamping member 25 work together to provide tension to the pin 24, thereby fixing the mold 1 and the mounting seat 22 in position. When the cross pin 26 is slightly pulled outward, the lock buckle 28 and the clamping piece 25 are no longer engaged, and the pin shaft 24 can be easily pulled out along the radial direction of the mounting seat 22 (that is, the nut 27 can be easily flipped so that the nut 27 and the mounting seat 22 are no longer threadedly connected), thereby achieving rapid disassembly of the mold 1. Similarly, in the above installation method, as long as the lock buckle 28 and the clamping piece 25 are in a clamped state and the position of the mold 1 and the mounting seat 22 is fixed, the mold 1 can be quickly installed.

[0058] In the embodiment provided by the present invention, the lock 28 is a U-shaped fork, and the latch 25 is a first short shaft 29 whose outer arm engages the U-shaped fork. A stopper 30 is provided at the end of the first short shaft 29, positioned below the U-shaped fork. Preferably, the diameter of the first short shaft 29 is smaller than that of the pin 24, while the outer diameter of the stopper 30 is larger than that of the pin 24. This facilitates quick engagement of the first short shaft 29 with the U-shaped fork, speeding up the installation of the mold 1. Furthermore, the stopper 30 limits axial movement of the pin 24.

[0059] The mounting base 22 has a first accommodating cavity within it, which is used to accommodate a fourth spring 31. The fourth spring 31 is sleeved onto the outer wall of the cross pin 26, with one end of the fourth spring 31 abutting against the end of the nut 27 and the other end abutting against the side wall of the accommodating cavity. The fourth spring 31 and its structural arrangement convert the compression potential energy of the fourth spring 31 into the kinetic energy of the cross pin 26. When the cross pin 26 is pulled outward, the fourth spring 31 accelerates the movement of the cross pin 26, thereby speeding up the disassembly of the mold 1.

[0060] The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0061] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crimping machine, characterized in that: It comprises a mold (1) for crimping a pipe fitting, wherein at least two of the molds (1) are evenly distributed along the circumference of the pipe fitting, the molds (1) are fan-shaped, and all the molds (1) are spliced ​​together to form a cylinder with an inner diameter; and a mounting seat (22) corresponding to the mold (1), each mounting seat (22) being detachably connected to the mold (1) via a disassembly assembly (23), all mounting seats (22) forming a mounting assembly, and when the disassembly assembly (23) moves along the radial direction of the mounting seat (22), the mounting seat (22) and the mold (1) are in a movable state; and an adjustment component for tightening the mounting seat (22) and adjusting the position of the mounting seat (22); A front mold (2) that cooperates with the front portion of the mounting assembly; a rear mold (3) cooperating with the rear portion of the mounting assembly; The front and rear parts of the mounting assembly are both cones; The adjustment assembly comprises a first pull rod (4) connected to the mounting seat (22); An inner ring (5) threadedly connected to the first pull rod (4); A second pull rod (6) connected to the outer side wall of the inner ring (5); an adjustment plate (7) threadedly connected to the second pull rod (6), the adjustment plate (7) being located at a central position in the axial direction of the mounting seat (22) and the mold (1); The disassembly assembly (23) includes a pin shaft (24) with one end matched with the mold (1), and the outer wall of the pin shaft (24) is clamped with the mounting seat (22); and a locking unit for limiting the movement of the pin shaft (24) along its axial direction.

2. The crimping machine according to claim 1, characterized in that: A first spring (8) is provided between adjacent mounting seats (22), and the first spring (8) is placed inside two adjacent mounting seats (22).

3. The crimping machine according to claim 1, characterized in that: The adjustment assembly comprises a first fixing plate (9) for fixing the front mold (2); and a second fixing plate (10) for fixing the rear mold (3); The second fixing plate (10), the first fixing plate (9) and the adjustment plate (7) are parallel.

4. The crimping machine according to claim 3, characterized in that: The adjustment assembly comprises a guide shaft (13) passing through the second fixing plate (10), the adjustment plate (7) and the first fixing plate (9); A second spring (14) and a third spring (15) are respectively provided on both sides of the adjustment plate (7); The second spring (14) and the third spring (15) are both sleeved on the guide shaft (13).

5. The crimping machine according to claim 4, characterized in that: A transition plate (17) is provided in a direction of the guide shaft (13) away from the mold (1); One end of the transition plate (17) abuts against the second fixing plate (10); A flange (18) is detachably connected to the transition plate (17), and the flange (18) is connected to the telescopic end of the oil cylinder assembly (19).

6. The crimping machine according to claim 1, characterized in that: A clamping member (25) is provided on the other end of the pin shaft (24); The locking unit comprises a lock buckle (28) with one end engaged with the clamping member (25); A transverse pin (26) having one end connected to the other end of the lock catch (28); and a nut (27) provided at the other end of the transverse pin (26), wherein the outer wall of the nut (27) is screw-connected to the mounting seat (22).

7. The crimping machine according to claim 6, characterized in that: The lock buckle (28) is a U-shaped shift fork, the clamping member (25) is a first short shaft (29) that is clamped between the outer arm and the U-shaped shift fork, and a blocking member (30) is provided on the end of the first short shaft (29), and the blocking member (30) is provided below the U-shaped shift fork.

8. The crimping machine according to claim 7, characterized in that: A first accommodating cavity is provided inside the mounting seat (22), and the first accommodating cavity is used to accommodate the fourth spring (31); The fourth spring (31) is sleeved on the outer wall of the transverse pin (26), and one end of the fourth spring (31) abuts against the end of the nut (27), and the other end abuts against the side wall of the accommodating cavity.

Images