CN112719098A

CN112719098A - Crimping machine

Info

Publication number: CN112719098A
Application number: CN202011602944.8A
Authority: CN
Inventors: 杨日平; 陈真; 杨湘龙
Original assignee: Changsha Heijingang Industrial Co Ltd
Current assignee: Changsha Heijingang Industrial Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-30

Abstract

The invention relates to a crimping machine which comprises at least two dies for crimping a pipe fitting, wherein the dies are uniformly distributed along the circumferential direction of the pipe fitting, the dies are fan-shaped, and all the dies are spliced into a cylinder with an inner diameter; the mounting seats are arranged corresponding to the die, each mounting seat is detachably connected with the die through a dismounting component, all the mounting seats are encircled to form a mounting component, when the dismounting component moves along the radial direction of the mounting seat, the mounting seat and the die are in a movable state, an adjusting component for tensioning the mounting seat and adjusting the position of the mounting seat and a front die matched with the front part of the mounting component are arranged; and the front part and the rear part of the mounting assembly are both cones. The application provides a withhold machine, the pipe fitting circularity error of withholding out is little, can not influence the assembly and the use of pipe fitting, simultaneously, when having to withhold different diameter pipe fittings, changes mould convenient and fast.

Description

Crimping machine

Technical Field

The invention relates to the technical field of manufacture of a crimping machine, in particular to a crimping machine.

Background

The buckling and pressing machine is a hydraulic device for buckling and pressing a pipe fitting assembly, and is used for firmly buckling and pressing a matched metal joint on a matched high-pressure oil pipe for engineering machinery or a brake pipe, an engine oil pipe, an air conditioner pipe and a power pipe on an automobile by applying a contraction force on a die of the buckling and pressing machine. The crimping machine is suitable for crimping of various mechanical high-low pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, engine oil pipes, automobile oil supply pipes, building accessories and daily hot water air pipes, and is widely applied to the industries of vehicles, engineering machinery, hydraulic machinery, welding and cutting equipment and the like.

The horizontal crimping machine is a common device for crimping pipelines, and a mold needs to be replaced in the using process of the horizontal crimping machine so as to adapt to different pipe bodies. The withhold of work piece usually is accomplished through the mould combined action of cutting apart into even number piece, for example, 8, 10, 12, and every mould is all installed on the die holding seat, when withholding is originated, gapped between the mould, continuously go on along with withholding the process, this clearance constantly reduces, laminate mutually until each mould lateral wall, in the use, the clearance distance that can appear between each mould is inequality usually, and then make pipe fitting outer wall atress inhomogeneous, the pipe fitting circularity error of withholding out is great, influence the assembly and the use of pipe fitting. On the other hand, if want to withhold different bodys of carrying out, just need to change the mould that corresponds the diameter, mould among the prior art is changed and is difficult very much, and the dismouting time is of a specified duration.

Disclosure of Invention

The invention aims to solve the technical problems and provide a crimping machine, which has small roundness error of a crimped pipe, does not influence the assembly and use of the pipe, and is convenient and quick to replace a die when pipes with different diameters need to be crimped.

The technical scheme of the invention is as follows:

a crimping machine comprises at least two dies for crimping a pipe fitting, wherein the dies are uniformly distributed along the circumferential direction of the pipe fitting, the dies are fan-shaped, and all the dies are spliced into a cylinder with an inner diameter;

the mounting seats are arranged corresponding to the die, each mounting seat is detachably connected with the die through a dismounting assembly, all the mounting seats surround the mounting assembly, and when the dismounting assembly moves along the radial direction of the mounting seat, the mounting seats and the die are in a movable state;

and an adjustment assembly for tensioning the mount and adjusting the position of the mount;

a front mold mated with the front portion of the mounting assembly;

a rear mold fitted to a rear portion of the mounting assembly;

the front part and the rear part of the mounting assembly are cones.

Preferably, the adjustment assembly comprises a first pull rod connected with the mounting seat;

the inner ring is in threaded connection with the first pull rod;

the second pull rod is connected with the outer side wall of the inner ring;

and the adjusting plate is connected with the second pull rod in a threaded manner and is positioned at the center of the mounting plate and the mold in the axial direction.

Preferably, a first spring is arranged between every two adjacent installation bases, and the first springs are arranged inside the two adjacent installation bases.

Preferably, the adjusting assembly comprises a first fixing plate for fixing the front mold; and a second fixing plate for fixing the rear mold;

the second fixing plate, the first fixing plate and the adjusting plate are parallel.

Preferably, the adjusting assembly includes a guide shaft passing through the second fixing plate, the adjusting plate and the first fixing plate;

a second spring and a third spring are respectively arranged on two sides of the adjusting plate;

the second spring and the third spring are sleeved on the guide shaft.

Preferably, a transition plate is arranged on the direction of the guide shaft away from the die;

one end of the transition plate is abutted against the second fixing plate;

and the flange plate is detachably connected with the transition plate and is connected with the telescopic end of the oil cylinder assembly.

Preferably, the disassembling component comprises a pin shaft with one end matched with the mold, and the outer wall of the pin shaft is clamped with the mounting seat;

and a locking unit limiting the movement of the pin shaft along the axial direction thereof.

Preferably, the other end of the pin shaft is provided with a clamping piece;

the locking unit comprises a lock catch with one end clamped with the clamping piece;

one end of the transverse pin is connected with the other end of the lock catch;

and the nut is arranged at the other end of the transverse pin, and the outer wall of the nut is in threaded connection with the mounting seat.

Preferably, the lock catch is a U-shaped shifting fork, the clamping piece is a first short shaft clamped by the outer arm and the U-shaped shifting fork, a blocking piece is arranged on the end portion of the first short shaft, and the blocking piece is arranged below the U-shaped shifting fork.

Preferably, a first accommodating cavity is formed in the mounting seat, and the first accommodating cavity is used for accommodating a fourth spring;

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

The buckling press provided by the invention has the beneficial effects that: when withholding the process, promote the back mould and move towards the front mould axial, because the front mould, the back mould is the cone, and cooperate with the installation component, and then the axial thrust of back mould converts radial contraction force, every mould of the die holding structure that this application provided all is connected with the mount pad, every mount pad atress is different, the mount pad gravity that the mount pad that is located the top receives is different with the mount pad gravity that the below receives, consequently, it is also different to need the tensioning force that every mount pad receives, come taut mount pad through the adjustment subassembly, and the position of adjustment mount pad along radial direction, it is the same to make the clearance between the mount pad (clearance between the mould promptly), consequently, the withholding machine that this application provided, make the pipe fitting circularity error of withholding out little, can not influence the assembly and the use of pipe fitting. On the other hand, every mount pad all is connected with the mould can be dismantled through the dismantlement subassembly with the mould, in case the dismantlement subassembly moves along the radial direction of mount pad, just can dismantle the mould from the mount pad. Consequently, the application provides a withhold machine, when having to withhold different diameter pipe fittings, change mould convenient and fast.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a withholding machine according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a mold mounting structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a mold mounting structure according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a detachment assembly according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a detachment assembly according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a detachment assembly provided in accordance with an embodiment of the present invention.

Reference numbers in the drawings illustrate: 1. a mold; 2. a front mold; 3. a rear mold; 4. a first pull rod; 5. an inner ring; 6. a second pull rod; 7. an adjustment plate; 8. a first spring; 9. a first fixing plate; 10. a second fixing plate; 11. a first stopper; 12. a second limiting block; 13. a guide shaft; 14. a second spring; 15. a third spring; 16. a nut; 17. a transition plate; 18. a flange plate; 19. an oil cylinder assembly; 20. a V-shaped seat; 22. a mounting seat; 23. disassembling the assembly; 24. a pin shaft; 25. a fastener; 26. a transverse pin; 27. a nut; 28. locking; 29. a first minor axis; 30. a blocking member; 31. and a fourth spring.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate an orientation or positional relationship only for convenience of description and simplicity of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 6, the crimping machine provided by the invention comprises at least two dies 1 for crimping a pipe, wherein the dies 1 are uniformly distributed along the circumferential direction of the pipe, the dies 1 are fan-shaped, and all the dies 1 are spliced into a cylinder with an inner diameter; the mounting seats 22 are arranged corresponding to the die 1, each mounting seat 22 is detachably connected with the die 1 through a dismounting component 23, all the mounting seats 22 form a mounting component, and when the dismounting component 23 moves along the radial direction of the mounting seat 22, the mounting seats 22 and the die 1 are in a movable state; and an adjustment assembly for tensioning the mount 22 and adjusting the position of the mount 22; a front mold 2 fitted to the front of the mounting assembly; a rear mold 3 fitted to the rear of the mounting assembly; the front part and the rear part of the mounting assembly are cones. When withholding the process, promote the back mould and move towards the front mould axial, because the front mould, the back mould is the cone, and cooperate with the installation component, and then the axial thrust of back mould converts radial contraction force, every mould of the die holding structure that this application provided all is connected with the mount pad, every mount pad atress is different, the mount pad gravity that the mount pad that is located the top receives is different with the mount pad gravity that the below receives, consequently, it is also different to need the tensioning force that every mount pad receives, come taut mount pad through the adjustment subassembly, and the position of adjustment mount pad along radial direction, it is the same to make the clearance between the mount pad (clearance between the mould promptly), consequently, the withholding machine that this application provided, make the pipe fitting circularity error of withholding out little, can not influence the assembly and the use of pipe fitting. On the other hand, every mount pad all is connected with the mould can be dismantled through the dismantlement subassembly with the mould, in case the dismantlement subassembly moves along the radial direction of mount pad, just can dismantle the mould from the mount pad. Consequently, the application provides a withhold machine, when having to withhold different diameter pipe fittings, change mould convenient and fast.

The adjusting assembly comprises a first pull rod 4 connected with the mounting seat 22, an inner ring 5 connected with the first pull rod 4 in a threaded mode, a second pull rod 6 connected with the outer side wall of the inner ring 5, and an adjusting plate 7 connected with the second pull rod 6 in a threaded mode, and the adjusting plate 7 is located at the center position of the mounting plate and the die 1 in the axial direction. Inner circle 5 and installation component concentric setting, through first pull rod 4, mount pad 22 is connected with first pull rod 4 spiral shell dress, through twisting first pull rod 4 several screw pitches, the axial position of adjustable mount pad 22 and mould 1, and the adjustment precision is high. And the inner ring 5 is connected with the adjusting plate 7 through the second pull rod 6, so that the position of the inner ring 5 can be realized. Preferably, still overlap on the first pull rod 4 and be equipped with elastic component, for example, the spring, support spring one end and lean on first pull rod 4, and the other end supports and leans on the holding tank bottom that holds the spring, and the inside of inner circle 5 is located to the holding tank, and the setting of spring is convenient for the dismantlement of mount pad 22.

Preferably, the first spring 8 is disposed between each two adjacent mounting seats 22, and the first spring 8 is disposed inside two adjacent mounting seats 22, also for equalizing the gap between the molds 1.

At least two first springs 8 are arranged in the axial direction of the die 1, so that the stress on the axis of the die 1 is balanced.

The invention provides an embodiment, comprising a first fixing plate 9 for fixing the front mould 2, and a second fixing plate 10 for fixing the rear mould 3; the second fixing plate 10, the first fixing plate 9 and the adjusting plate 7 are parallel. First fixed plate 9 and second fixed plate 10 are fixed front mould 2, back mould 3 respectively, and with adjusting plate 7 parallel arrangement, all make front mould 2, back mould 3 laminate with the outer wall of installation component all the time, avoid front mould 2, back mould 3 to take place the drunkenness when withholding.

Wherein, a first limiting block 11 is arranged on the side part of the first fixing plate 9, and a second limiting block 12 is arranged on the end part of the first fixing plate 9. The first limiting block 11 and the second limiting block 12 are arranged to ensure the positioning reference of the first fixing plate 9 in the horizontal direction and the longitudinal direction of the horizontal plane, and then the first positioning plate, the second positioning plate and the adjusting plate 7 are arranged in parallel to ensure that the center lines of the first positioning plate, the second positioning plate and the adjusting plate coincide with the center line of the die 1, so that the roundness precision of the buckled pipe can be further improved.

In the embodiment provided by the invention, the guide shaft 13 penetrates through the second fixing plate 10, the adjusting plate 7 and the first fixing plate 9, the second spring 14 and the third spring 15 are respectively arranged on two sides of the adjusting plate 7, and the second spring 14 and the third spring 15 are both sleeved on the guide shaft 13. Preferably, the expansion rate and the length of the second spring 14 and the third spring 15 are the same, and the connection relationship between the second spring 14 and the third spring 15 and the guide shaft 13 is the same, so that the first fixing plate 9 and the adjusting plate 7 are the same, and the distance between the second fixing plate 10 and the adjusting plate 7 is the same, so that the forward and backward movement distance is not the same, and a bell mouth cannot appear, so that the adjusting plate 7 is used as a center, and the distances on both sides are the same, and the situation that the front is large and the back is small or the front is small and the back is large cannot occur.

Wherein, the guiding axle 13 is provided with a nut 16 near one end of the first fixing plate 9, the nut 16 is in threaded connection with the guiding axle 13, and the nut 16 is abutted against the first fixing plate 9. The nut 16 is arranged to avoid the phenomenon that the first fixing plate 9 cannot be separated from the guide shaft 13 due to overlarge stress of the mounting assembly in the buckling process.

In the embodiment provided by the invention, the transition plate 17 is arranged in the direction of the guide shaft 13 far away from the die 1, one end of the transition plate 17 is abutted against the second fixed plate 10, the flange 18 is detachably connected with the transition plate 17, and the flange 18 is connected with the telescopic end of the oil cylinder assembly 19, so that the rear die 3 and the oil cylinder assembly 19 are reliably connected.

The bottom of the oil cylinder assembly 19 is provided with a V-shaped seat 20, so that the oil cylinder assembly 19 is fixed and does not shake in the buckling process.

Including the mould 1 that is used for withholding the pipe fitting, mould 1 is equipped with two at least along the circumferencial direction equipartition of pipe fitting, and mould 1 is fan-shaped, and all moulds 1 splice into the cylinder that has the internal diameter to and the mount pad 22 that corresponds the setting with mould 1, every mount pad 22 can be dismantled with mould 1 through dismantling the subassembly 23 and be connected, when dismantling the subassembly 23 edge during the radial direction of mount pad 22 removes, mount pad 22 is in portable state with mould 1. Compared with the prior art, this application provides a withhold machine, every mount pad 22 all can be dismantled with mould 1 through dismantling subassembly 23 and be connected with mould 1, in case dismantle subassembly 23 moves along the radial direction of mount pad 22, just can dismantle mould 1 from mount pad 22. Consequently, the application provides a withhold machine, when having to withhold different diameter pipe fittings, change 1 convenient and fast of mould.

The disassembling component 23 comprises a pin 24 with one end matched with the die 1, the outer wall of the pin 24 is clamped with the mounting seat 22, and a locking unit for limiting the pin 24 to move along the axial direction. At this time, the axis of the pin shaft 24 is parallel to the radial direction of the mounting seat 22, wherein the outer wall of the pin shaft 24 is clamped with the mounting seat 22, and a tensioning mode or a threaded connection mode can be adopted. The locking unit enables the die 1 to always have the tension force provided by the pin 24 through locking the pin 24, and further enables the die 1 and the mounting seat 22 to be fixed in position.

Preferably, the other end of the pin 24 is provided with a clamping piece 25, the locking unit comprises a lock catch 28 with one end clamped with the clamping piece 25, a cross pin 26 with one end connected with the other end of the lock catch 28, and a nut 27 arranged at the other end of the cross pin 26, and the outer wall of the nut 27 is in threaded connection with the mounting seat 22. The nut 27 is connected with the mounting seat 22 in a threaded manner, and the lock 28 is clamped with the clamping piece 25, and the two jointly act to provide tension for the pin shaft 24, so that the die 1 and the mounting seat 22 are fixed in position. When outwards extracting transverse pin 26 a little, hasp 28 and fastener 25 no longer the joint, along the radial direction of mount pad 22, can easily extract round pin axle 24 (easily upset nut 27 promptly for nut 27 and mount pad 22 are not at threaded connection), and then realize the quick dismantlement of mould 1, and on the same hand, install above-mentioned mode, as long as let hasp 28 and fastener 25 be in the chucking state, mould 1 and mount pad 22 rigidity just can realize the quick installation of mould 1.

In the embodiment provided by the invention, the lock catch 28 is a U-shaped shifting fork, the clamping piece 25 is a first short shaft 29 with an outer arm clamped with the U-shaped shifting fork, a blocking piece 30 is arranged on the end part of the first short shaft 29, and the blocking piece 30 is arranged below the U-shaped shifting fork. Preferably, the diameter of the first short shaft 29 is set to be smaller than that of the pin shaft 24, and the outer diameter of the blocking member 30 is larger than that of the pin shaft 24, so that the first short shaft 29 can be conveniently and rapidly clamped with the U-shaped shifting fork, and the installation speed of the die 1 is improved. On the other hand, the stopper 30 can restrict the axial direction movement of the pin 24.

Wherein, the inside first chamber that holds that is equipped with of mount pad 22, the first chamber that holds is used for holding fourth spring 31, and fourth spring 31 overlaps and locates on the outer wall of horizontal pin 26, and fourth spring 31 one end supports by the tip in nut 27, and the other end supports by the lateral wall in holding the chamber. The fourth spring 31 and the fourth spring 31 are configured to convert the compression potential energy of the fourth spring 31 into the kinetic energy of the lateral pin 26, and when the lateral pin 26 is pulled out, the fourth spring 31 can increase the moving speed of the lateral pin 26, thereby increasing the speed of detaching the mold 1.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The crimping machine is characterized by comprising dies (1) for crimping a pipe fitting, wherein at least two dies (1) are uniformly distributed along the circumferential direction of the pipe fitting, the dies (1) are fan-shaped, and all the dies (1) are spliced into a cylinder with an inner diameter;

the mounting seats (22) are arranged corresponding to the die (1), each mounting seat (22) is detachably connected with the die (1) through a dismounting component (23), all the mounting seats (22) form a mounting component in a surrounding mode, and when the dismounting component (23) moves along the radial direction of the mounting seat (22), the mounting seats (22) and the die (1) are in a movable state;

and an adjustment assembly for tensioning the mount (22) and adjusting the position of the mount (22);

a front mould (2) cooperating with the front part of the mounting assembly;

a rear mold (3) fitted to the rear of the mounting assembly;

the front part and the rear part of the mounting assembly are cones.

2. Crimping machine according to claim 1, characterized in that said adjustment assembly comprises a first tie rod (4) connected to said mounting seat (22);

the inner ring (5) is connected with the first pull rod (4) in a screw mode;

a second pull rod (6) connected with the outer side wall of the inner ring (5);

and the adjusting plate (7) is connected with the second pull rod (6) in a threaded mode, and the adjusting plate (7) is located at the center position of the mounting plate in the axial direction of the die (1).

3. Crimping machine according to claim 2, characterized in that a first spring (8) is provided between each of the adjacent mounting seats (22), and the first spring (8) is disposed inside two adjacent mounting seats (22).

4. Crimping machine according to claim 2, characterized in that said adjustment assembly comprises a first fixing plate (9) for fixing said front mould (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 adjusting plate (7) are parallel.

5. The machine according to claim 4, characterized in that said adjustment assembly comprises a guide shaft (13) passing through said second fixed plate (10), said adjustment plate (7) and said first fixed plate (9);

a second spring (14) and a third spring (15) are respectively arranged on two sides of the adjusting plate (7);

the second spring (14) and the third spring (15) are sleeved on the guide shaft (13).

6. The machine according to claim 4, characterised in that a transition plate (17) is provided in the direction of the guide shaft (13) away from the die (1);

one end of the transition plate (17) is abutted against the second fixing plate (10);

and the flange plate (18) is detachably connected with the transition plate (17), and the flange plate (18) is connected with the telescopic end of the oil cylinder assembly (19).

7. Crimping machine according to claim 1, characterized in that said detachment assembly (23) comprises a pin (24) with one end cooperating with said mould (1), the outer wall of said pin (24) being blocked with said mounting seat (22);

and a locking unit that restricts the movement of the pin (24) in the axial direction thereof.

8. The crimping machine as claimed in claim 7, characterized in that a clamping element (25) is provided at the other end of the pin (24);

the locking unit comprises a lock catch (28) with one end clamped with the clamping piece (25);

a cross pin (26) with one end connected with the other end of the lock catch (28);

and the nut (27) is arranged at the other end of the transverse pin (26), and the outer wall of the nut (27) is connected with the mounting seat (22) in a threaded mode.

9. The machine according to claim 8, characterized in that the lock (28) is a U-shaped fork, the clip (25) is a first stub shaft (29) with an outer arm clamped with the U-shaped fork, a stopper (30) is arranged on the end of the first stub shaft (29), and the stopper (30) is arranged below the U-shaped fork.

10. Crimping machine according to claim 9, characterized in that said mounting seat (22) is internally provided with a first housing chamber for housing a fourth spring (31);

the fourth spring (31) is sleeved on the outer wall of the transverse pin (26), one end of the fourth spring (31) abuts against the end part of the nut (27), and the other end of the fourth spring (31) abuts against the side wall of the accommodating cavity.