CN118577713B - A clamp-ring type pipe crimping device and a method of using the same - Google Patents

Abstract

The invention belongs to the field of pipeline crimping, and particularly discloses a clamp ring type pipeline crimping device and a using method thereof. The invention creatively provides a self-adaptive lifting supporting mechanism, which can adaptively drive the lifting upright post to lift through a synchronous telescopic cylinder capable of following the pressure expansion in the annular cavity, thereby realizing the technical effects of automatically settling and avoiding the position of the arc-shaped supporting frame during extrusion and automatically resetting the supporting frame during release; in addition, the invention also provides a pressure equalizing type beam-converging crimping mechanism, and the adsorption transfer of the jig body can be automatically completed by manually performing simple placement operation in a magnetic attraction transfer mode.

Description

A clamp-ring type pipe crimping device and a method of using the same

Technical Field

The invention belongs to the technical field of pipeline crimping, and specifically refers to a clamp-ring type pipeline crimping device and a use method thereof.

Background Art

The tube crimping machine uses a ring-shaped fixture that continuously converges toward the center to squeeze and deform the metal pipe from the outside. The tube crimping machine often has two functions: one is to complete the connection between the two sleeved pipes by squeezing, and the other is to partially reduce the outer diameter of the pipe by squeezing. At present, the tube crimping machine is relatively mature, but there are still many areas that can be improved:

A: Since the fixture body is composed of several independent fan-shaped units, the existing installation and disassembly mechanism, whether in terms of operation steps or fixing methods, is relatively complicated and cumbersome, making it difficult to achieve rapid disassembly and assembly; and when faced with workpieces of different diameters, it is very frequent to replace the fixture body;

B: In the prior art, the start and stop of the pressure supply pump is controlled by feedback pressure. However, if the module for feedback pressure fails, there is no other structure to detect and feedback such failure, which may cause the problem of poor pressure control accuracy;

C: In the prior art, the workpiece is placed in a telescopic base, and the position is generally pre-fixed by hand before clamping. However, since there are no support points at the front and rear ends, the workpiece is either lifted to the center of the telescopic base by hand, or the workpiece is first placed on the jig body at the bottom, and then moved up during the contraction of the jig body. Both methods have the problems of high labor intensity, certain dangers in close-range operation, and the possibility of the workpiece getting stuck in the seam of the jig body.

Summary of the invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a highly safe clamping ring type pipe crimping device and a method of using the same; in order to solve the problem that the workpiece has no suitable support point, the present invention arranges an arc support frame at the front end, but due to the large difference in the diameters of the workpieces, if the position of the arc support frame is too low, it will cause the small diameter pipe fittings to be positioned too low when in use; if the position of the arc support frame is too high, it will cause the large diameter pipe fittings to be positioned too high when in use; and an arc support frame with a moderate position is easy to interfere with the workpiece when the workpiece is clamped and straightened; in order to overcome this technical contradiction, the present invention creatively proposes an adaptive lifting support mechanism, which adaptively drives the lifting column to rise and fall through a synchronous telescopic cylinder that can expand and contract with the pressure in the annular cavity, thereby achieving the technical effect that the arc support frame automatically sinks and avoids the position during extrusion, and automatically resets the support when released.

In order to solve the problem of unchanged disassembly and assembly of the fixture body, the present invention proposes a pressure-equalizing crimping mechanism, which uses magnetic attraction force transfer so that people only need to perform simple placement operations to automatically complete the adsorption transfer of the fixture body; at the same time, the present invention also proposes an over-pressure feedback mechanism, which sets two groups of pressure feedback components for comparison with each other, and uses a balanced feedback component to provide feedback on the synchronization of the two groups of pressure feedback components, thereby avoiding the problem of pressure control failure caused by failure of the pressure feedback component itself.

The technical solution adopted by the present invention is as follows: The present invention proposes a clamping ring type pipe crimping device, including a pressure-equalizing type converging crimping mechanism, an overpressure feedback mechanism, an adaptive lifting support mechanism and a main frame assembly, the main frame assembly includes a square base and an outer shell body, the outer shell body is arranged on the square base, the pressure-equalizing type converging crimping mechanism is arranged in the outer shell body, the overpressure feedback mechanism is arranged on the pressure-equalizing type converging crimping mechanism, and the adaptive lifting support mechanism is arranged on the square base.

The main frame assembly also includes a jig disassembly and assembly assembly, which includes a disassembly and assembly bracket and a jig body. The disassembly and assembly bracket is provided with a disk, and push rods are evenly distributed in a ring on the disk. The jig body is provided with a guide transverse groove, and the jig body is also provided with a positioning hole matching the push rod.

By disassembling the bracket, the entire set of fixture bodies can be installed and disassembled at one time. On the one hand, it can ensure that the relative positions of each set of fixture bodies remain unchanged (avoiding accuracy deviation caused by insufficient universality), and on the other hand, it can greatly simplify the steps of manual operation.

The pressure-equalizing type bundling and crimping mechanism includes a synchronous bundling component, a magnetic jig positioning component, a jig detachment component and a pressure supply component. The synchronous bundling component is arranged in the shell body, the magnetic jig positioning component is arranged on the synchronous bundling component, the jig detachment component is arranged in the magnetic jig positioning component, and the pressure supply component is arranged on the shell body.

The equalizing pressure-type convergence crimping mechanism can squeeze the workpiece in the middle as a whole from all sides, and the magnetic fixture positioning component and the fixture detachment component can quickly adsorb and fix the fixture body, which can automatically fix the position of the fixture through magnetic attraction while ensuring stability.

The synchronous focusing assembly includes an annular cavity, a telescopic base and a diffusion spring. The annular cavity is snap-fitted in the outer shell body. The inner ring of the annular cavity is evenly distributed with square slide grooves. The telescopic base is composed of a square slider and a fan-shaped base. The square slider is snap-fitted and slidably arranged in the square slide groove. The diffusion spring is arranged between adjacent telescopic bases, and the end of the diffusion spring is fixedly connected to the telescopic base.

The expansion spring can make the telescopic base expand into a nearly standard circle in a natural state, which is convenient for placing the workpiece therein.

The magnetic fixture positioning assembly includes a guide slide rail, a tail base and a magnetic ring. The guide slide rail is fixedly connected to the telescopic base. The fixture body is slidably arranged on the guide slide rail through a guide transverse groove. The guide slide rail and the tail base are arranged side by side, and the magnetic ring is engaged in the tail base; the pressure supply assembly includes a pressure supply pump and a pressure supply pipe. The pressure supply pump is arranged on a square base, and the pressure supply pipe is arranged between the pressure supply pump and the annular cavity.

The jig disengagement assembly includes a double-cavity sleeve, a central piston, a piston return spring and an annular piston. The double-cavity sleeve is clamped and arranged inside the magnetic ring. The double-cavity sleeve is provided with a sleeve inner cavity and a sleeve outer cavity. The central piston is clamped and slidably arranged in the sleeve inner cavity. The piston return spring is arranged between the bottom of the sleeve inner cavity and the central piston. The annular piston is clamped and slidably arranged in the sleeve outer cavity.

Through the magnetic attraction of the magnetic ring, when the jig body is close to the magnetic ring, the jig body can be separated from the magnetic attraction of the disk through its own magnetic attraction force and slide to a position close to the tail base. When removing the jig body, it is only necessary to press the center piston through the push rod to transfer the jig body from the magnetic ring to the disk by extending the annular piston.

The overpressure feedback mechanism includes a pressure antagonism component, a pressure feedback component and a balance feedback component. The pressure antagonism component is arranged on the synchronous convergence component, the pressure feedback component is slidably arranged in the pressure antagonism component, and the balance feedback component is slidably arranged in the pressure antagonism component.

On the one hand, the overpressure feedback mechanism can be used to know the current internal pressure of the annular cavity through the pressure feedback on both sides; on the other hand, the accuracy of the pressure feedback can be further guaranteed by comparing the indications of the feedback mechanisms on both sides, thereby avoiding misjudgment caused by local damage and failure.

The pressure countermeasure component includes a side sleeve, a pressure transmission pipeline and a central countermeasure tube. The side sleeve is arranged on the side of the annular cavity, and the central countermeasure tube is arranged on the side of the square base. The side sleeve and the central countermeasure tube are connected through the pressure transmission pipeline.

The pressure feedback assembly includes a pressure feedback piston, a pressure piston spring, an adjusting stud and a contact switch. The pressure feedback piston is slidably arranged in the side sleeve, the pressure piston spring is arranged between the bottom of the side sleeve and the pressure feedback piston, the adjusting stud is threadedly connected to the side sleeve, and the contact switch is arranged on the pressure feedback piston and the adjusting stud.

The pressure in the annular cavity can be fed back through the pressure feedback component. When the contact switches on both sides are in contact, a control signal can be sent to reduce the pressure in the annular cavity and reset and retract the telescopic base.

The balance feedback component includes a central slider, a balance feedback piston and a balance piston spring. The central slider is slidably engaged in the central antagonistic tube. A boss contact is provided on the side of the central slider. The boss contact slides in the slide groove of the central antagonistic tube. The balance feedback piston is slidably engaged in the central antagonistic tube. The balance piston spring is arranged between the central slider and the balance feedback piston.

Through the balance feedback component, it is possible to determine whether the actions of the two sets of pressure feedback components are consistent based on the horizontal extent of the center slider. If the asynchrony of the two sets of pressure feedback components exceeds the set range, an alarm will be issued by sending a signal through the boss contact.

The self-adaptive lifting support mechanism comprises a rack drive component and a spiral lifting component. The rack drive component is clamped in the shell body, and the spiral lifting component is arranged on a square base.

Through the rack drive assembly and the spiral lifting assembly, the arc-shaped support frame of the device that pre-supports the workpiece can automatically descend to avoid position during extrusion, thereby preventing the position of the arc-shaped support frame from interfering with the stretched workpiece.

The rack drive assembly includes a synchronous telescopic cylinder, a thin tube and a rack reset spring. The synchronous telescopic cylinder is clamped at the bottom of the shell body. The synchronous telescopic cylinder and the annular cavity are connected through the thin tube. A rack portion is provided on the moving part of the synchronous telescopic cylinder, and the rack reset spring is arranged between the rack portion and the shell body.

The synchronous telescopic cylinder is connected to the annular cavity through a thin tube, so the internal pressure of the synchronous telescopic cylinder increases with the increase of pressure in the annular cavity, and decreases with the decrease of pressure in the annular cavity. Therefore, through the linkage of the rack drive assembly, the spiral lifting assembly can present a technical effect of automatically rising and falling with the start and stop of the extrusion process.

The spiral lifting assembly includes a limit plate, a rotating gear plate, a guide shell and a lifting column. The limit plate is fixedly connected to the square base, the rotating gear plate is rotatably arranged on the limit plate, the rotating gear plate is provided with a gear ring portion meshing with the rack portion, and the rotating gear plate is also provided with an internal thread portion. The guide shell is fixedly connected to the square base, the guide shell is provided with a guide vertical groove, the lifting column is snap-fitted and slidably arranged in the guide vertical groove, the bottom of the lifting column is threadedly connected to the internal thread portion, and the top of the lifting column is provided with an arc-shaped support frame.

The present invention also discloses a method for using a clamp-ring type pipe crimping device, which mainly comprises the following steps:

Step 1: After inserting the ejector rod into the arc-shaped support frame, the fixture body can be fixed by the magnetic attraction of the disk, and then the fixture disassembly and assembly assembly is moved to the center position of the equalizing pressure-type convergence crimping mechanism, and the entire set of fixture bodies is simultaneously pushed into the telescopic base in the convergence state, and the guide transverse groove is engaged with the guide rail. When the fixture body approaches the magnetic suction ring, the magnetic attraction of the magnetic suction ring will overcome the magnetic attraction of the disk to separate the fixture body from the disassembly and assembly bracket and adsorb it to the tail base, and then the disassembly and assembly bracket is moved out to complete the installation; if disassembly is required, just insert the ejector rod into the positioning hole again, and then continue to go deeper. When the ejector rod presses against the central piston and continues to press, the annular piston will extend under the pressure of the liquid in the double-chamber sleeve, so that the fixture body is separated from the magnetic suction ring and transferred to the disk, completing the disassembly; in the face of workpieces with different diameters, it is necessary to replace fixture bodies of different specifications;

Step 2: After the installation is completed, the workpiece is placed on the arc support frame and in the pressure-equalizing type convergence crimping mechanism. Then the pressure pump supplies fluid into the annular cavity through the pressure supply pipe. As the pressure in the annular cavity increases, the telescopic base also moves the fixture body toward the center position, thereby squeezing the workpiece. The position of the diffusion spring can prevent the telescopic base at the top from falling due to its own weight in the initial state.

Step 3: As the pressure in the annular cavity increases, the pressure feedback piston gradually overcomes the elastic force of the pressure piston spring and approaches the adjusting stud. When the contact switch is in contact, an electrical signal is sent. When the contact switches on both sides are in contact, it means that the annular cavity has reached the predetermined pressure. At this time, the pressure in the annular cavity is removed by the pressure supply pump, and the telescopic base will retract and reset with the fixture body.

Step 4: When you need to change the pressure threshold when the contact switch contacts, just rotate the adjustment stud; during the sliding process of the pressure feedback piston, the liquid in the side sleeve will also enter the center antagonism tube through the pressure transmission pipe, but as long as the balance feedback components on both sides work normally and the adjustment amplitude of the adjustment stud is equal, the center slider will always remain in the center position. If the center slider has a lateral offset, it means that the feedback of the two sets of pressure feedback components is not synchronized. When the offset amplitude of the center slider exceeds the limit of the slide groove in the center antagonism tube, the boss contact will sound an alarm; through the safety verification of the balance feedback component, the misjudgment problem caused by local damage to the pressure feedback component can be avoided.

Step 5: As the pressure in the annular cavity increases, the synchronous telescopic cylinder also continues to extend, and the rack portion on the synchronous telescopic cylinder drives the rotating toothed disc to rotate through the meshing transmission with the gear ring portion. When the rotating toothed disc rotates, the lifting column is lowered through the threaded transmission of the internal threaded portion and the lifting column, thereby avoiding interference between the workpiece and the arc-shaped support frame when it is clamped and straightened;

Step 6: When the pressure in the annular cavity decreases, the adaptive lifting support mechanism will also slowly reset under the elastic force of the rack reset spring.

The beneficial effects achieved by the present invention using the above structure are as follows:

(1) By disassembling the bracket, the entire set of fixture bodies can be installed and disassembled at one time. On the one hand, it can ensure that the relative positions of each set of fixture bodies remain unchanged (avoiding the accuracy deviation caused by the lack of universality), and on the other hand, it can greatly simplify the steps of manual operation.

(2) The equalizing pressure-type converging and crimping mechanism can squeeze the workpiece in the middle as a whole from all sides, and the magnetic fixture positioning component and the fixture detachment component can quickly adsorb and fix the fixture, so that the fixture body can automatically complete the position fixation through magnetic attraction while ensuring stability.

(3) The diffusion spring can make the telescopic base diffuse into a nearly standard circle in a natural state, which is conducive to placing the workpiece therein.

(4) Through the magnetic attraction of the magnetic ring, when the fixture body is close to the magnetic ring, the fixture body can be separated from the magnetic attraction of the disk through its own magnetic attraction and slide to a position close to the tail base. When removing the fixture body, it only needs to press the center piston through the push rod to transfer the fixture body from the magnetic ring to the disk through the extension of the annular piston.

(5) On the one hand, the overpressure feedback mechanism can be used to obtain the current internal pressure of the annular cavity through the pressure feedback on both sides. On the other hand, the accuracy of the pressure feedback can be further guaranteed by comparing the indications of the feedback mechanisms on both sides, thereby avoiding misjudgment caused by local damage and failure.

(6) The pressure in the annular cavity can be fed back through the pressure feedback component. When the contact switches on both sides are in contact, a control signal can be sent to reduce the pressure in the annular cavity and reset the telescopic base to retract.

(7) Through the balance feedback component, it is possible to determine whether the actions of the two sets of pressure feedback components are consistent based on the horizontal width of the center slider. If the asynchrony of the two sets of pressure feedback components exceeds the set range, an alarm will be issued by sending a signal through the boss contact.

(8) Through the rack drive assembly and the spiral lifting assembly, the arc-shaped support frame of the device that pre-supports the workpiece can automatically descend to avoid the position during extrusion, thereby preventing the position of the arc-shaped support frame from interfering with the straightened workpiece.

(9) The synchronous telescopic cylinder is connected to the annular cavity through a thin tube. Therefore, the internal pressure of the synchronous telescopic cylinder increases with the increase of the pressure in the annular cavity, and decreases with the decrease of the pressure in the annular cavity. Therefore, through the linkage of the rack drive assembly, the spiral lifting assembly can present a technical effect of automatically rising and falling with the start and stop of the extrusion process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a clamp-ring type pipe crimping device proposed by the present invention;

FIG2 is a front view of a clamp-ring type pipe crimping device proposed by the present invention;

FIG3 is a left side view of a clamp-ring type pipe crimping device proposed by the present invention;

FIG4 is a top view of a clamp-ring type pipe crimping device proposed by the present invention;

Fig. 5 is a cross-sectional view along the cutting line A-A in Fig. 2;

Fig. 6 is a cross-sectional view along the section line B-B in Fig. 3;

Fig. 7 is a cross-sectional view along the cutting line C-C in Fig. 5;

Fig. 8 is a cross-sectional view along the section line D-D in Fig. 2;

FIG9 is an exploded schematic diagram of a clamp-ring type pipe crimping device proposed by the present invention;

FIG10 is a partial enlarged view of point Ⅰ in FIG6;

FIG11 is a partial enlarged view of point II in FIG5;

FIG12 is a partial enlarged view of point III in FIG7;

FIG13 is a schematic diagram of a cross-sectional comparison of a fixture body, wherein (a), (b), (c), and (d) are cross-sectional shapes of fixture bodies of different specifications, respectively.

Among them, 1. pressure-equalizing type convergence crimping mechanism, 2. overpressure feedback mechanism, 3. adaptive lifting support mechanism, 4. main frame assembly, 5. synchronous convergence assembly, 6. magnetic fixture positioning assembly, 7. fixture detachment assembly, 8. pressure supply assembly, 9. annular cavity, 10. telescopic base, 11. diffusion spring, 12. guide rail, 13. tail base, 14. magnetic ring, 15. double-cavity sleeve, 16. center piston, 17. piston return spring, 18. annular piston, 19. pressure supply pump, 20. pressure supply pipe, 21. square slide, 22. square slider, 23. fan-shaped base, 24. sleeve inner cavity, 25. sleeve outer cavity, 26. pressure counter assembly, 27. pressure feedback assembly, 28. balance feedback assembly, 29. side sleeve, 30. pressure transmission pipeline, 31 , center antagonist tube, 32, pressure feedback piston, 33, pressure piston spring, 34, adjusting stud, 35, contact switch, 36, center slider, 37, balance feedback piston, 38, balance piston spring, 39, boss contact, 40, rack drive assembly, 41, spiral lifting assembly, 42, synchronous telescopic cylinder, 43, fine catheter, 44, rack reset spring, 45, limit plate, 46, rotating gear plate, 47, guide shell, 48, lifting column, 49, rack part, 50, gear ring part, 51, internal thread part, 52, guide vertical groove, 53, arc support frame, 54, square base, 55, shell body, 56, disassembly bracket, 57, disk, 58, push rod, 59, fixture disassembly assembly, 60, fixture body, 61, guide horizontal groove, 62, positioning hole.

The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

As shown in Figures 1 to 13, the present invention proposes a clamping ring type pipe crimping device, including a pressure-equalizing type convergence crimping mechanism 1, an overpressure feedback mechanism 2, an adaptive lifting support mechanism 3 and a main frame assembly 4, the main frame assembly 4 includes a square base 54 and an outer shell body 55, the outer shell body 55 is arranged on the square base 54, the pressure-equalizing type convergence crimping mechanism 1 is arranged in the outer shell body 55, the overpressure feedback mechanism 2 is arranged on the pressure-equalizing type convergence crimping mechanism 1, and the adaptive lifting support mechanism 3 is arranged on the square base 54.

The main frame assembly 4 also includes a jig disassembly and assembly assembly 59, which includes a disassembly and assembly bracket 56 and a jig body 60. The disassembly and assembly bracket 56 is provided with a magnetic disk 57, and the magnetic disk 57 is evenly distributed in a ring with push rods 58. The jig body 60 is provided with a guide transverse groove 61, and the jig body 60 is also provided with a positioning hole 62 matching the push rod 58.

By disassembling the bracket 56, the entire set of fixture bodies 60 can be installed and disassembled at one time. On the one hand, it can ensure that the relative positions of each set of fixture bodies 60 remain unchanged (avoiding accuracy deviation due to insufficient universality), and on the other hand, it can greatly simplify the steps of manual operation.

The pressure-equalizing bundling and crimping mechanism 1 includes a synchronous bundling component 5, a magnetic jig positioning component 6, a jig detachment component 7 and a pressure supply component 8. The synchronous bundling component 5 is arranged in the outer shell body 55, the magnetic jig positioning component 6 is arranged on the synchronous bundling component 5, the jig detachment component 7 is arranged in the magnetic jig positioning component 6, and the pressure supply component 8 is arranged on the outer shell body 55.

The equalizing pressure-type converging and crimping mechanism 1 can squeeze the workpiece in the middle as a whole from all sides, and the magnetic fixture positioning component 6 and the fixture detachment component 7 can quickly adsorb and fix the fixture body 60, so that the fixture body 60 can automatically complete the position fixation through magnetic attraction while ensuring stability.

The synchronous focusing assembly 5 includes an annular cavity 9, a telescopic base 10 and a diffusion spring 11. The annular cavity 9 is snap-fitted into the outer shell body 55. Square slide grooves 21 are evenly distributed in an annular shape on the inner ring of the annular cavity 9. The telescopic base 10 is composed of a square slider 22 and a fan-shaped base 23. The square slider 22 is snap-fitted and slidably arranged in the square slide groove 21. The diffusion spring 11 is arranged between adjacent telescopic bases 10, and the end of the diffusion spring 11 is fixedly connected to the telescopic base 10.

The expansion spring 11 can make the telescopic base 10 expand into a nearly standard circle in a natural state, which is convenient for placing the workpiece therein.

The magnetic fixture positioning assembly 6 includes a guide rail 12, a tail base 13 and a magnetic ring 14. The guide rail 12 is fixedly connected to the telescopic base 10. The fixture body 60 is slidably mounted on the guide rail 12 through a guide transverse groove 61 and is fixed to the telescopic base 10. The guide rail 12 and the tail base 13 are arranged side by side, and the magnetic ring 14 is engaged in the tail base 13; the pressure supply assembly 8 includes a pressure supply pump 19 and a pressure supply pipe 20. The pressure supply pump 19 is arranged on the square base 54, and the pressure supply pipe 20 is arranged between the pressure supply pump 19 and the annular cavity 9.

The fixture disengagement assembly 7 includes a double-cavity sleeve 15, a central piston 16, a piston return spring 17 and an annular piston 18. The double-cavity sleeve 15 is snap-fitted inside the magnetic ring 14. The double-cavity sleeve 15 is provided with a sleeve inner cavity 24 and a sleeve outer cavity 25. The central piston 16 is snap-fitted and slidably arranged in the sleeve inner cavity 24. The piston return spring 17 is arranged between the bottom of the sleeve inner cavity 24 and the central piston 16. The annular piston 18 is snap-fitted and slidably arranged in the sleeve outer cavity 25.

Through the magnetic attraction of the magnetic ring 14, when the jig body 60 is close to the magnetic ring 14, the jig body 60 can be separated from the magnetic attraction of the magnetic disk 57 through its own magnetic attraction and slide to a position close to the tail base 13. When removing the jig body 60, it is only necessary to press the central piston 16 through the push rod 58, and the jig body 60 can be transferred from the magnetic ring 14 to the magnetic disk 57 by extending the annular piston 18.

The overpressure feedback mechanism 2 includes a pressure resistance component 26, a pressure feedback component 27 and a balance feedback component 28. The pressure resistance component 26 is arranged on the synchronous convergence component 5, the pressure feedback component 27 is slidably arranged in the pressure resistance component 26, and the balance feedback component 28 is slidably arranged in the pressure resistance component 26.

On the one hand, the overpressure feedback mechanism 2 can be used to know the current internal pressure of the annular cavity 9 through the pressure feedback on both sides; on the other hand, the accuracy of the pressure feedback can be further guaranteed by comparing the indications of the feedback mechanisms on both sides to avoid misjudgment caused by local damage and failure.

The pressure-resistance assembly 26 includes a side sleeve 29 , a pressure transmission pipe 30 and a central resistance pipe 31 . The side sleeve 29 is arranged on the side of the annular cavity 9 , and the central resistance pipe 31 is arranged on the side of the square base 54 . The side sleeve 29 and the central resistance pipe 31 are connected through the pressure transmission pipe 30 .

The pressure feedback assembly 27 includes a pressure feedback piston 32, a pressure piston spring 33, an adjusting stud 34 and a contact switch 35. The pressure feedback piston 32 is slidably engaged in the side sleeve 29. The pressure piston spring 33 is disposed between the bottom of the side sleeve 29 and the pressure feedback piston 32. The adjusting stud 34 is threadedly connected to the side sleeve 29. The contact switch 35 is disposed on the pressure feedback piston 32 and the adjusting stud 34.

The pressure in the annular cavity 9 can be fed back through the pressure feedback assembly 27. When the contact switches 35 on both sides are in contact, a control signal can be sent to reduce the pressure in the annular cavity 9 and reset and retract the telescopic base 10.

The balancing feedback assembly 28 includes a central slider 36, a balancing feedback piston 37 and a balancing piston spring 38. The central slider 36 is slidably engaged in the central antagonistic tube 31. A boss contact 39 is provided on the side of the central slider 36. The boss contact 39 slides in the slide groove of the central antagonistic tube 31. The balancing feedback piston 37 is slidably engaged in the central antagonistic tube 31. The balancing piston spring 38 is arranged between the central slider 36 and the balancing feedback piston 37.

Through the balance feedback component 28, it is possible to determine whether the actions of the two groups of pressure feedback components 27 are consistent based on the horizontal extent of the central slider 36. If the asynchrony of the two groups of pressure feedback components 27 exceeds the set range, an alarm will be issued by sending a signal through the boss contact 39.

The adaptive lifting support mechanism 3 includes a rack driving assembly 40 and a spiral lifting assembly 41 . The rack driving assembly 40 is engaged in the housing body 55 , and the spiral lifting assembly 41 is disposed on the square base 54 .

Through the rack drive assembly 40 and the spiral lifting assembly 41, the arc-shaped support frame 53 of the device for pre-supporting the workpiece can automatically descend to avoid position during extrusion, thereby preventing the position of the arc-shaped support frame 53 from interfering with the stretched workpiece.

The rack drive assembly 40 includes a synchronous telescopic cylinder 42, a thin tube 43 and a rack reset spring 44. The synchronous telescopic cylinder 42 is snap-fitted to the bottom of the outer shell body 55. The synchronous telescopic cylinder 42 and the annular cavity 9 are connected through the thin tube 43. A rack portion 49 is provided on the moving portion of the synchronous telescopic cylinder 42. The rack reset spring 44 is provided between the rack portion 49 and the outer shell body 55.

The synchronous telescopic cylinder 42 is connected to the annular cavity 9 through a thin tube 43, so the internal pressure of the synchronous telescopic cylinder 42 increases with the increase of the pressure in the annular cavity 9, and decreases with the decrease of the pressure in the annular cavity 9. Therefore, through the linkage of the rack drive assembly 40, the spiral lifting assembly 41 can present a technical effect of automatically rising and falling with the start and stop of the extrusion process.

The spiral lifting assembly 41 includes a limit plate 45, a rotating gear plate 46, a guide shell 47 and a lifting column 48. The limit plate 45 is fixedly connected to the square base 54. The rotating gear plate 46 is rotatably arranged on the limit plate 45. The rotating gear plate 46 is provided with a gear ring portion 50 meshing with the rack portion 49. The rotating gear plate 46 is also provided with an internal thread portion 51. The guide shell 47 is fixedly connected to the square base 54. The guide shell 47 is provided with a guide vertical groove 52. The lifting column 48 is engaged and slidably arranged in the guide vertical groove 52. The bottom of the lifting column 48 is threadedly connected to the internal thread portion 51. The top of the lifting column 48 is provided with an arc-shaped support frame 53.

When in use, the user first needs to insert the push rod 58 into the arc-shaped support frame 53, and the fixture body 60 can be fixed by the magnetic attraction of the disk 57, and then the fixture disassembly assembly 59 is moved to the center position of the equalizing pressure type convergence crimping mechanism 1, and the entire set of fixture bodies 60 are simultaneously pushed into the telescopic base 10 in the convergence state, and the guide transverse groove 61 is engaged with the guide slide rail 12. When the fixture body 60 approaches the magnetic attraction ring 14, the magnetic attraction of the magnetic attraction ring 14 will overcome the magnetic attraction of the disk 57 to push the fixture body The body 60 is separated from the disassembly bracket 56 and adsorbed to the tail base 13, and then the disassembly bracket 56 is removed to complete the installation; if disassembly is required, it is only necessary to insert the push rod 58 into the positioning hole 62 again, and then continue to go deeper. When the push rod 58 presses against the central piston 16 and continues to press, the annular piston 18 will extend under the pressure of the liquid in the double-chamber sleeve 15, so that the fixture body 60 is separated from the magnetic ring 14 and transferred to the magnetic disk 57, and the disassembly is completed; in the face of workpieces with different diameters, it is necessary to replace the fixture body 60 of different specifications;

After the installation is completed, the workpiece is placed on the arc support frame 53 and located in the pressure-equalizing type convergence crimping mechanism 1, and then the pressure supply pump 19 supplies fluid into the annular cavity 9 through the pressure supply pipe 20. As the pressure in the annular cavity 9 increases, the telescopic base 10 also brings the fixture body 60 closer to the center position, thereby squeezing the workpiece. The position of the diffusion spring 11 can prevent the telescopic base 10 at the top from falling due to its own weight in the initial state.

As the pressure in the annular cavity 9 increases, the pressure feedback piston 32 gradually overcomes the elastic force of the pressure piston spring 33 and approaches the adjusting stud 34. When the contact switches 35 are in contact, an electrical signal is sent. When the contact switches 35 on both sides are in contact, it indicates that the annular cavity 9 has reached a predetermined pressure. At this time, the pressure in the annular cavity 9 is removed by the pressure supply pump 19, and the telescopic base 10 will retract and reset with the fixture body 60.

When it is necessary to change the pressure threshold when the contact switch 35 contacts, it is only necessary to rotate the adjusting stud 34; during the sliding of the pressure feedback piston 32, the liquid in the side sleeve 29 will also enter the central antagonism tube 31 through the pressure transmission pipe 30, but as long as the balance feedback components 28 on both sides work normally and the adjustment amplitudes of the adjusting stud 34 are equal, the central slider 36 will always remain in the center position. If the central slider 36 has a lateral offset, it means that the feedback of the two sets of pressure feedback components 27 are not synchronized. When the offset amplitude of the central slider 36 exceeds the limit of the slide groove in the central antagonism tube 31, the boss contact 39 will sound an alarm; through the safety verification of the balance feedback component 28, the misjudgment problem caused by local damage to the pressure feedback component 27 can be avoided.

During the process of increasing the pressure in the annular cavity 9, the synchronous telescopic cylinder 42 also continues to extend, and the rack portion 49 on the synchronous telescopic cylinder 42 drives the rotating toothed disc 46 to rotate through the meshing transmission with the gear ring portion 50. When the rotating toothed disc 46 rotates, the lifting column 48 is lowered through the threaded transmission of the internal thread portion 51 and the lifting column 48, thereby avoiding interference between the workpiece and the arc support frame 53 when the workpiece is clamped and straightened;

When the pressure in the annular cavity 9 decreases, the adaptive lifting support mechanism 3 will also slowly reset under the elastic force of the rack reset spring 44 .

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a snap ring type pipeline crimping device, includes main body frame subassembly (4), main body frame subassembly (4) include square base (54) and shell body (55), on square base (54) were located to shell body (55), its characterized in that still includes voltage-sharing formula receipts bundle crimping mechanism (1), excessive pressure feedback mechanism (2) and self-adaptation lift supporting mechanism (3), voltage-sharing formula receipts bundle crimping mechanism (1) are located in shell body (55), excessive pressure feedback mechanism (2) are located on voltage-sharing formula receipts bundle crimping mechanism (1), self-adaptation lift supporting mechanism (3) are located on square base (54);

the main body frame assembly (4) further comprises a jig dismounting assembly (59), the jig dismounting assembly (59) comprises a dismounting bracket (56) and a jig body (60), a magnetic disk (57) is arranged on the dismounting bracket (56), ejector rods (58) are uniformly distributed on the magnetic disk (57) in a ring shape, a guide transverse groove (61) is formed in the jig body (60), and a positioning hole (62) matched with the ejector rods (58) is formed in the jig body (60);

The pressure equalizing type beam-shrinking crimping mechanism (1) comprises a synchronous beam-shrinking assembly (5), a magnetic type jig positioning assembly (6), a jig separating assembly (7) and a pressure supply assembly (8), wherein the synchronous beam-shrinking assembly (5) is arranged in a shell body (55), the magnetic type jig positioning assembly (6) is arranged on the synchronous beam-shrinking assembly (5), the jig separating assembly (7) is arranged in the magnetic type jig positioning assembly (6), and the pressure supply assembly (8) is arranged on the shell body (55);

The overpressure feedback mechanism (2) comprises a pressure countermeasure component (26), a pressure feedback component (27) and a balance feedback component (28), wherein the pressure countermeasure component (26) is arranged on the synchronous converging component (5), the pressure feedback component (27) is slidably arranged in the pressure countermeasure component (26), and the balance feedback component (28) is slidably arranged in the pressure countermeasure component (26); the self-adaptive lifting support mechanism (3) comprises a rack driving assembly (40) and a spiral lifting assembly (41), wherein the rack driving assembly (40) is clamped in the shell body (55), and the spiral lifting assembly (41) is arranged on the square base (54).

2. A snap ring type pipe crimping device as claimed in claim 1, wherein: synchronous beam assembly (5) are including annular cavity (9), flexible base (10) and diffusion spring (11), in shell body (55) was located in annular cavity (9) block, annular equipartition is equipped with square spout (21) on the inner circle of annular cavity (9), flexible base (10) are by square slider (22) and fan-shaped base (23) are constituteed, square slider (22) block slides and locates in square spout (21), between adjacent flexible base (10) is located in diffusion spring (11), the tip and the flexible base (10) rigid coupling of diffusion spring (11).

3. A snap ring type pipe crimping apparatus as claimed in claim 2, wherein: the magnetic type jig positioning assembly (6) comprises a guide sliding rail (12), a tail base (13) and a magnetic type circular ring (14), wherein the guide sliding rail (12) is fixedly connected to the telescopic base (10), the jig body (60) is arranged on the guide sliding rail (12) in a clamping sliding manner through a guide transverse groove (61), the magnetic type circular ring is fixedly connected to the telescopic base (10), the guide sliding rail (12) and the tail base (13) are arranged side by side, and the magnetic type circular ring (14) is arranged in the tail base (13) in a clamping manner; the pressure supply assembly (8) comprises a pressure supply pump (19) and a pressure supply pipe (20), the pressure supply pump (19) is arranged on the square base (54), and the pressure supply pipe (20) is arranged between the pressure supply pump (19) and the annular cavity (9).

4. A snap ring type pipe crimping device as claimed in claim 3, wherein: the tool breaks away from subassembly (7) including double-chamber sleeve pipe (15), center piston (16), piston reset spring (17) and annular piston (18), the inside that circle (14) was inhaled to magnetism is located to double-chamber sleeve pipe (15) block, be equipped with sleeve pipe inner chamber (24) and sleeve pipe outer chamber (25) on double-chamber sleeve pipe (15), in sleeve pipe inner chamber (24) were located in center piston (16) block slip, between the bottom of sleeve pipe inner chamber (24) and center piston (16) was located in piston reset spring (17), in sleeve pipe outer chamber (25) were located in annular piston (18) block slip.

5. The clasp type pipe crimping device according to claim 4, wherein: the pressure countermeasure component (26) comprises a side sleeve (29), a pressure transmission pipeline (30) and a central countermeasure pipe (31), wherein the side sleeve (29) is arranged on the side surface of the annular cavity (9), the central countermeasure pipe (31) is arranged on the side surface of the square base (54), and the side sleeve (29) and the central countermeasure pipe (31) are connected in a penetrating mode through the pressure transmission pipeline (30).

6. A snap ring type pipe crimping device as claimed in claim 5, wherein: the pressure feedback assembly (27) comprises a pressure feedback piston (32), a pressure piston spring (33), an adjusting stud (34) and a contact switch (35), wherein the pressure feedback piston (32) is clamped and slidingly arranged in the side sleeve (29), the pressure piston spring (33) is arranged between the bottom of the side sleeve (29) and the pressure feedback piston (32), the adjusting stud (34) is in threaded connection with the side sleeve (29), and the contact switch (35) is arranged on the pressure feedback piston (32) and the adjusting stud (34).

7. The clasp type conduit crimping device according to claim 6, wherein: the balance feedback assembly (28) comprises a center sliding block (36), a balance feedback piston (37) and a balance piston spring (38), wherein the center sliding block (36) is clamped and slidingly arranged in the center countermeasure pipe (31), a boss type contact (39) is arranged on the side face of the center sliding block (36), the boss type contact (39) slides in a sliding groove of the center countermeasure pipe (31), the balance feedback piston (37) is clamped and slidingly arranged in the center countermeasure pipe (31), and the balance piston spring (38) is arranged between the center sliding block (36) and the balance feedback piston (37).

8. A snap ring type pipe crimping device as claimed in claim 7, wherein: the rack driving assembly (40) comprises a synchronous telescopic cylinder (42), a thin guide pipe (43) and a rack reset spring (44), wherein the synchronous telescopic cylinder (42) is clamped at the bottom of the shell body (55), the synchronous telescopic cylinder (42) and the annular cavity (9) are connected in a penetrating mode through the thin guide pipe (43), a rack portion (49) is arranged on a moving portion of the synchronous telescopic cylinder (42), and the rack reset spring (44) is arranged between the rack portion (49) and the shell body (55).

9. The snap ring type pipe crimping device as claimed in claim 8, wherein: spiral lifting assembly (41) are including limiting plate (45), rotation fluted disc (46), direction shell (47) and lift stand (48), limiting plate (45) rigid coupling is on square base (54), rotation fluted disc (46) rotate locate on limiting plate (45), be equipped with on rotation fluted disc (46) with tooth bar portion (49) engaged ring gear portion (50), still be equipped with internal thread portion (51) on rotation fluted disc (46), direction shell (47) rigid coupling is on square base (54), be equipped with direction vertical groove (52) on direction shell (47), in direction vertical groove (52) are located in the block of lift stand (48), the bottom and internal thread portion (51) threaded connection of lift stand (48), the top of lift stand (48) is equipped with arc support frame (53).

10. A method of using the snap ring type conduit crimping device of claim 9, comprising the steps of:

Step one: after the ejector rod (58) is inserted into the arc-shaped supporting frame (53), the jig body (60) can be adsorbed and fixed by the magnetic attraction of the magnetic disk (57), then the jig dismounting assembly (59) is moved to the center position of the pressure equalizing type converging and crimping mechanism (1), the whole group of jig bodies (60) are simultaneously pushed into the telescopic base (10) in a converging state, the guide transverse grooves (61) are in clamping fit with the guide sliding rails (12), after the jig bodies (60) are close to the magnetic attraction circular ring (14), the magnetic attraction of the magnetic attraction circular ring (14) overcomes the magnetic attraction of the magnetic disk (57) to separate the jig bodies (60) from the dismounting bracket (56) and adsorb the jig bodies to the tail base (13), and then the dismounting bracket (56) is moved out to finish mounting; if disassembly is required, the ejector rod (58) is inserted into the positioning hole (62) again and then goes deep continuously, when the ejector rod (58) is propped against the central piston (16) and is continuously pressed, the annular piston (18) stretches out under the pressure of liquid in the double-cavity sleeve (15), so that the jig body (60) is separated from the magnetic ring (14) and is transferred to the magnetic disk (57), and the disassembly is completed; the jig body (60) with different specifications needs to be replaced when facing the workpieces with different pipe diameters;

Step two: after the installation is completed, the workpiece is placed on an arc-shaped supporting frame (53) and is positioned in a pressure equalizing and converging crimping mechanism (1), then a pressure supply pump (19) supplies fluid to an annular cavity (9) through a pressure supply pipe (20), and along with the rising of the pressure in the annular cavity (9), a telescopic base (10) also brings a jig body (60) to approach to the central position, so that the workpiece is extruded, and the telescopic base (10) at the top in an initial state can be prevented from falling down due to dead weight through the position maintenance of a diffusion spring (11);

step three: along with the rising of the pressure in the annular cavity (9), the pressure feedback piston (32) gradually overcomes the elasticity of the pressure piston spring (33) and approaches to the adjusting stud (34), an electric signal is sent when the contact switches (35) are contacted, the annular cavity (9) reaches the preset pressure when the contact switches (35) on the two sides are in a contact state, and the pressure in the annular cavity (9) is removed through the pressure supply pump (19), so that the telescopic base (10) can retract and reset along with the jig body (60);

Step four: when the pressure threshold value of the contact switch (35) is required to be changed, the adjusting stud (34) is only required to be rotated for adjustment; during the sliding process of the pressure feedback piston (32), liquid in the side sleeve (29) enters the central countermeasure pipe (31) through the pressure transmission pipeline (30), but as long as the balance feedback assemblies (28) at two sides work normally and the adjustment amplitudes of the adjustment studs (34) are equal, the central sliding block (36) is always kept at the central position, if the central sliding block (36) generates transverse offset, the feedback of the two groups of pressure feedback assemblies (27) is asynchronous, and when the offset amplitude of the central sliding block (36) exceeds the limit of a sliding groove in the central countermeasure pipe (31), a boss type contact (39) can give an alarm; through the safety verification of the balance feedback assembly (28), the misjudgment problem caused by the local damage of the pressure feedback assembly (27) can be avoided;

Step five: in the process of pressure rise in the annular cavity (9), the synchronous telescopic cylinder (42) also continuously stretches out, a rack part (49) on the synchronous telescopic cylinder (42) drives a rotary fluted disc (46) to rotate through a meshing transmission with a gear ring part (50), and the rotary fluted disc (46) can make the lifting upright column (48) descend through the threaded transmission of an internal thread part (51) and the lifting upright column (48) when rotating, so that interference with an arc-shaped supporting frame (53) is avoided when a workpiece is clamped and straightened;

Step six: when the pressure in the annular cavity (9) is reduced, the self-adaptive lifting support mechanism (3) can slowly reset under the action of the elastic force of the rack reset spring (44).