Internal expansion and external extrusion one-step composite pipe joint crimping machine

Abstract

The utility model discloses an internal expansion and external extrusion one-step type composite pipe joint crimping machine which comprises a module connecting plate, a driving assembly, a connecting assembly, an internal expansion head and an external extrusion module, an outer extrusion module is sleeved in the module connecting plate, and the inner expansion heads are sleeved in the outer extrusion module at intervals, so that an annular gap is formed between the inner expansion heads and the outer extrusion module; the composite pipe horizontally and transversely penetrates out of the left side face and the right side face of the module connecting plate coaxially through the annular gap, the left end of the composite pipe is coaxially sleeved with the composite pipe connector, a driving assembly is arranged on the left end side of the composite pipe connector, and the driving end of the driving assembly is coaxially connected with the left end of the composite pipe connector through a connecting assembly. And the composite pipe joint is driven to do horizontal transverse reciprocating motion, so that the composite pipe joint coaxially penetrates through the space between the inner expanding head and the outer extruding module rightwards, and the inner expanding action and the outer extruding action are synchronously performed. According to the utility model, two actions of internal expansion and external extrusion of the composite pipe joint can be completed in one step, so that the working hours are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joint connection, in particular to an inner expansion and outer extrusion one-step composite pipe joint crimping machine. Background Art

[0002] The existing composite pipe joint crimping machines generally have the following defects: 1) The crimping method is to expand internally first and then squeeze externally, that is, the crimping work of the composite pipe joint is completed in two steps, which takes a long time; 2) The matching crimping molds are generally divided into two sets, one is the internal expansion mold, and the other is the external extrusion mold. The two sets of molds have about 7 to 10 modules, which are of many types and are difficult to store; 3) The existing composite pipe joint crimping machines expand internally first and then squeeze externally, which easily causes the internal expansion to shrink, thus affecting the quality. Therefore, the above problems need to be solved urgently. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a one-step composite pipe joint crimping machine with internal expansion and external extrusion, which can complete the two actions of internal expansion and external extrusion of the composite pipe joint in one step, saving time, labor and working hours.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model is an internal expansion and external extrusion one-step composite pipe joint crimping machine, the innovation of which is that it includes a module connecting plate, a driving component, a connecting component, an internal expansion head and an external extrusion module; an external extrusion module matching the outside of the composite pipe joint is coaxially sleeved and fixed in the vertically arranged module connecting plate, and the internal expansion head matches the inside of the composite pipe joint and is coaxially sleeved in the external extrusion module at intervals, thereby forming an annular gap matching the composite pipe joint between the internal expansion head and the external extrusion module; the composite pipe is horizontally traversed The annular gap coaxially passes through the left and right sides of the module connecting plate, and the left end of the composite pipe is coaxially sleeved in the horizontally and transversely arranged composite pipe joint, and a driving component is also coaxially arranged horizontally and transversely on the left end side of the composite pipe joint. The driving end of the driving component is horizontally and transversely linked to the left end of the composite pipe joint through the connecting component, and drives the composite pipe joint to perform horizontal and transverse reciprocating motion, and then the composite pipe joint is coaxially passed between the inner expansion head and the outer extrusion module horizontally and transversely to the right, and in this process, the composite pipe joint is synchronously expanded and extruded internally through the inner expansion head and the outer extrusion module.

[0005] Preferably, the left and right side surfaces of the outer extrusion module are respectively arranged coplanar with the corresponding side surfaces of the module connecting plate, and it is ensured that the outer extrusion module and the inner expansion head have no influence on the horizontal lateral movement of the composite pipe.

[0006] Preferably, the external extrusion module is an annular structure, and a through groove matching the external extrusion module is coaxially embedded in the interior of the module connecting plate. The through groove horizontally and laterally penetrates the left and right sides of the module connecting plate, and the external extrusion module is coaxially sleeved in the through groove of the module connecting plate and fixedly connected to the module connecting plate through a matching angle; the inner surface of the external extrusion module is an inner cone surface matching the composite pipe fitting, and the right end thereof is a small diameter end, so that the composite pipe fitting is externally extruded by the external extrusion module.

[0007] Preferably, it also includes a fixed tail plate, a main connecting rod and a locking nut; the fixed tail plate is vertically and longitudinally spaced on the left side of the module connecting plate and is aligned with the module connecting plate left and right; a main connecting rod is also symmetrically and horizontally arranged between the fixed tail plate and the module connecting plate, and the two main connecting rods are respectively spaced on the front and rear sides of the composite pipe joint, and the two ends of each main connecting rod are screwed and fixed to the fixed tail plate and the module connecting plate through locking nuts, thereby forming a hollow frame.

[0008] Preferably, the driving assembly includes a hydraulic cylinder and a cylinder sliding connecting plate; a hydraulic cylinder is also horizontally and laterally arranged between the fixed tail plate and the module connecting plate and relative to the two main connecting rods, and the hydraulic cylinder is arranged without interfering with each of the main connecting rods; the left end of the piston rod of the hydraulic cylinder is coaxially screwed and fixed to the right side surface of the fixed tail plate, and the right end of its piston rod extends horizontally and laterally in the direction of the module connecting plate and does not contact the module connecting plate; a cylinder sliding connecting plate is also vertically and longitudinally fixed on the right side surface of the cylinder of the hydraulic cylinder, and the front and rear ends of the cylinder sliding connecting plate are respectively connected to the corresponding main connecting rods for horizontal and horizontal sliding, and then, under the drive of the hydraulic cylinder, the cylinder of the hydraulic cylinder drives the cylinder sliding connecting plate to perform horizontal and horizontal reciprocating sliding.

[0009] Preferably, it also includes an inner expansion connecting rod; an inner expansion connecting rod is also coaxially sleeved in the inner expansion head, the inner expansion connecting rod is threaded and fixed to the inner expansion head, and its two ends respectively extend vertically out of the left and right side surfaces of the inner expansion head; the left end of the inner expansion connecting rod is coaxially fixedly connected to the right end of the piston rod of the hydraulic cylinder, and does not interfere with the horizontal lateral reciprocating movement of the composite pipe joint, and the inner expansion head is fixed by the inner expansion connecting rod.

[0010] Preferably, the inner expansion head is a circular structure that matches the interior of the composite pipe joint, and its left side surface is arranged on the left side of the left side surface of the outer extrusion module, and ensures that its right side surface is arranged inside the outer extrusion module; the outer surface of the inner expansion head is an outer conical surface that matches the composite pipe joint, and its left end is a small diameter end, so that the composite pipe joint is internally expanded through the inner expansion head.

[0011] Preferably, the connecting assembly includes an openable and closable transition support sleeve, a buckled transition sleeve, a buckled center positioning sleeve and a transition flange; on the piston rod of the hydraulic cylinder relative to the right side of the oil cylinder sliding connecting plate, an openable and closable transition support sleeve, a buckled transition sleeve and a buckled center positioning sleeve are coaxially sleeved in sequence from left to right, and the openable and closable transition support sleeve and the buckled transition sleeve are both coaxially sleeved on the piston rod of the hydraulic cylinder at intervals, and ensure that the buckled center positioning sleeve is in a free state in the axial direction; on the right side surface of the oil cylinder sliding connecting plate relative to the position of the openable and closable transition support sleeve, a transition flange is coaxially screwed, and the openable and closable transition support sleeve is limited by the transition flange; the buckled The left end of the compression transition sleeve is coaxially sleeved with the right end of the openable and closable transition support sleeve, and the left half of the crimping center positioning sleeve is coaxially sleeved in the crimping transition sleeve; the left end of the composite pipe joint is coaxially sleeved on the right half of the crimping center positioning sleeve, and is coaxially pressed against the right end face of the crimping transition sleeve, and then the composite pipe joint is aligned with the inner expansion head and the outer extrusion module respectively through the cooperation of the crimping transition sleeve and the crimping center positioning sleeve, and then with the sliding of the cylinder sliding connecting plate, the composite pipe joint is coaxially passed to the right between the inner expansion head and the outer extrusion module through the cooperation of the openable and closable transition support sleeve, the crimping transition sleeve and the crimping center positioning sleeve.

[0012] Preferably, the openable and closable transition support sleeve is formed by two semicircular plates aligned and spliced ​​together coaxially, and the two semicircular plates are movably connected by a movable pin, so that the composite pipe joint is supported by the openable and closable transition support sleeve, and the spacing between the oil cylinder sliding connecting plate and the buckled transition sleeve is adjusted by the openable and closable transition support sleeve; waist-shaped holes are embedded in each semicircular plate at intervals along its length direction, so that the weight of the openable and closable transition support sleeve is reduced by the waist-shaped holes; U-shaped handles are respectively arranged along the length direction of the edges of the two semicircular plates on the other side of the position where the movable pin is set, so that the openable and closable transition support sleeve is assisted in installation by the U-shaped handles.

[0013] Beneficial effects of the utility model:

[0014] (1) The utility model can complete the two actions of internal expansion and external extrusion of the composite pipe joint in one step, saving time, labor and working hours;

[0015] (2) The utility model simplifies the matching crimping molds, with a total of about 4 to 5 modules, thereby reducing complexity;

[0016] (3) The composite pipe joint of the utility model performs external extrusion while expanding internally, thereby effectively reducing the shrinkage amount of internal expansion;

[0017] (4) The utility model can not only simultaneously perform the functions of internal expansion and external extrusion, but also perform the functions of internal expansion or external extrusion separately, and has high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The utility model is a structural schematic diagram of a one-step composite pipe joint crimping machine with internal expansion and external extrusion.

[0020] Figure 2 for Figure 1 sectional view of .

[0021] Among them, 1-locking nut; 2-fixed tail plate; 3-main connecting rod; 4-cylinder sliding connecting plate; 5-transition flange; 6-openable and closable transition support sleeve; 7-pressed transition sleeve; 8-pressed center positioning sleeve; 9-composite pipe joint; 10-inner expansion head; 11-external extrusion module; 12-module connecting plate; 13-hydraulic cylinder; 14-inner expansion connecting rod; 15-composite pipe. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0023] The utility model discloses a one-step internal expansion and external extrusion composite pipe joint crimping machine, comprising a module connecting plate 12, a driving component, a connecting component, an internal expansion head 10 and an external extrusion module 11; the specific structure is as follows Figure 1 , Figure 2As shown, an outer extrusion module 11 matching the outer part of the composite pipe joint 9 is coaxially sleeved and fixed in the vertically arranged module connecting plate 12, and the inner expansion head 10 matches the inner part of the composite pipe joint 9, and is coaxially sleeved in the outer extrusion module 11 at intervals, thereby forming an annular gap matching the composite pipe joint 9 between the inner expansion head 10 and the outer extrusion module 11; the composite pipe 15 passes through the left and right sides of the module connecting plate 12 coaxially through the annular gap horizontally and transversely, and the left end of the composite pipe 15 is coaxially sleeved in the horizontally and transversely arranged composite pipe joint 9, and a driving component is also coaxially provided on the left end side of the composite pipe joint 9 horizontally and transversely, and the driving end of the driving component is coaxially linked to the left end of the composite pipe joint 9 through the connecting component horizontally and transversely to the right, and drives the composite pipe joint 9 to perform horizontal and transverse reciprocating motion, thereby passing the composite pipe joint 9 coaxially between the inner expansion head 10 and the outer extrusion module 11 horizontally and transversely to the right, and in this process, the composite pipe joint 9 is synchronously expanded and extruded by the inner expansion head 10 and the outer extrusion module 11. The left and right sides of the outer extrusion module 11 are respectively arranged coplanar with the corresponding sides of the module connecting plate 12 , and it is ensured that the outer extrusion module 11 and the inner expansion head 10 have no influence on the horizontal lateral movement of the composite tube 15 .

[0024] like Figure 1 , Figure 2 As shown, the external extrusion module 11 is a circular ring structure, and a through groove matching the external extrusion module 11 is coaxially embedded in the interior of the module connecting plate 12, and the through groove horizontally and laterally penetrates the left and right sides of the module connecting plate 12, and the external extrusion module 11 is coaxially sleeved in the through groove of the module connecting plate 12, and is fixedly connected to the module connecting plate 12 by a matching angle; the inner surface of the external extrusion module 11 is an inner cone surface matching the composite pipe joint 9, and the right end thereof is a small-diameter end, and then the external extrusion module 11 performs an external extrusion action on the composite pipe joint 9.

[0025] like Figure 1 , Figure 2 As shown, the inner expansion head 10 is a circular structure that matches the inside of the composite pipe joint 9, and its left side surface is arranged on the left side of the left side surface of the outer extrusion module 11, and ensures that its right side surface is arranged inside the outer extrusion module 11; the outer surface of the inner expansion head 10 is an outer conical surface that matches the composite pipe joint 9, and its left end is a small-diameter end, and then the composite pipe joint 9 is expanded internally through the inner expansion head 10.

[0026] The utility model fixed tail plate 2 is vertically and longitudinally spaced on the left side of the module connecting plate 12, and is aligned with the left and right sides of the module connecting plate 12; Figure 1 , Figure 2As shown, a main connecting rod 3 is also symmetrically arranged horizontally between the fixed tail plate 2 and the module connecting plate 12. The two main connecting rods 3 are respectively arranged at intervals on the front and rear sides of the composite pipe joint 9, and the two ends of each main connecting rod 3 are respectively screwed and fixed to the fixed tail plate 2 and the module connecting plate 12 through a locking nut 1, thereby forming a hollow frame.

[0027] The driving assembly includes a hydraulic cylinder 13 and a cylinder sliding connecting plate 4; Figure 1 , Figure 2 As shown, a hydraulic cylinder 13 is also horizontally and transversely arranged between the fixed tail plate 2 and the module connecting plate 12 and relative to the two main connecting rods 3, and the hydraulic cylinder 13 is arranged without interfering with each main connecting rod 3; the left end of the piston rod of the hydraulic cylinder 13 is coaxially screwed and fixed with the right side of the fixed tail plate 2, and the right end of its piston rod extends horizontally and transversely in the direction of the module connecting plate 12, and does not contact the module connecting plate 12; a cylinder sliding connecting plate 4 is also vertically and longitudinally fixed on the right side of the cylinder of the hydraulic cylinder 13, and the front and rear ends of the cylinder sliding connecting plate 4 are respectively connected to the corresponding main connecting rod 3 for horizontal and transverse sliding, and then under the drive of the hydraulic cylinder 13, the cylinder of the hydraulic cylinder 13 drives the cylinder sliding connecting plate 4 to perform horizontal and transverse reciprocating sliding.

[0028] like Figure 1 , Figure 2 As shown, an inner expansion connecting rod 14 is coaxially sleeved in the inner expansion head 10, the inner expansion connecting rod 14 is screwed and fixed to the inner expansion head 10, and its two ends respectively extend vertically out of the left and right sides of the inner expansion head 10; the left end of the inner expansion connecting rod 14 is coaxially fixedly connected to the right end of the piston rod of the hydraulic cylinder 13, and does not interfere with the horizontal lateral reciprocating motion of the composite pipe joint 9, and the inner expansion head 10 is fixed by the inner expansion connecting rod 14.

[0029] The utility model connection assembly comprises an openable and closable transition support sleeve 6, a buckled transition sleeve 7, a buckled center positioning sleeve 8 and a transition flange 5; Figure 1 , Figure 2As shown, on the piston rod of the hydraulic cylinder 13, relative to the right side of the oil cylinder sliding connecting plate 4, an openable and closable transition support sleeve 6, a buckling transition sleeve 7 and a buckling center positioning sleeve 8 are coaxially sleeved in sequence from left to right, and the openable and closable transition support sleeve 6 and the buckling transition sleeve 7 are coaxially sleeved on the piston rod of the hydraulic cylinder 13 at intervals, and ensure that the buckling center positioning sleeve 8 is in a free state in the axial direction; on the right side surface of the oil cylinder sliding connecting plate 4, relative to the position of the openable and closable transition support sleeve 6, a transition flange 5 is coaxially screwed, and the openable and closable transition support sleeve 6 is limited by the transition flange 5; the left end of the buckling transition sleeve 7 is coaxially sleeved with the right end of the openable and closable transition support sleeve 6 The composite pipe joint 9 is axially sleeved, and the left half of the pressing center positioning sleeve 8 is coaxially sleeved in the pressing transition sleeve 7; the left end of the composite pipe joint 9 is coaxially sleeved on the right half of the pressing center positioning sleeve 8, and is coaxially pressed against the right end face of the pressing transition sleeve 7, and then the composite pipe joint 9 is respectively aligned with the inner expansion head 10 and the outer extrusion module 11 through the cooperation of the pressing transition sleeve 7 and the pressing center positioning sleeve 8, and then with the sliding of the cylinder sliding connecting plate 4, the composite pipe joint 9 is horizontally and transversely passed coaxially to the right between the inner expansion head 10 and the outer extrusion module 11 through the cooperation of the openable and closable transition support sleeve 6, the pressing transition sleeve 7 and the pressing center positioning sleeve 8.

[0030] like Figure 1 , Figure 2 As shown, the openable and closable transition support sleeve 6 is formed by two semicircular plates aligned and spliced ​​together coaxially, and the two semicircular plates are movably connected by a movable pin shaft, so that the composite pipe joint 9 is supported by the openable and closable transition support sleeve 6, and the spacing between the cylinder sliding connecting plate 4 and the buckled transition sleeve 7 is adjusted by the openable and closable transition support sleeve 6; waist-shaped holes are embedded in each semicircular plate at intervals along its length direction, so that the weight of the openable and closable transition support sleeve 6 is reduced by the waist-shaped holes; U-shaped handles are respectively disposed along the length direction of the edges of the two semicircular plates on the other side of the position where the movable pin shaft is set, so that the openable and closable transition support sleeve 6 is assisted in the installation.

[0031] The working principle of the utility model is as follows: after assembly, driven by the hydraulic cylinder 13, the cylinder sliding connecting plate 4 slides horizontally to the right, and then through the cooperation of the openable and closable transition support sleeve 6, the buckled transition sleeve 7 and the buckled center positioning sleeve 8, the composite pipe joint 9 is horizontally and horizontally passed to the right between the inner expansion head 10 and the outer extrusion module 11 coaxially, and in this process, the composite pipe joint 9 is synchronously expanded and extruded by the inner expansion head 10 and the outer extrusion module 11.

[0032] Beneficial effects of the utility model:

[0033] (1) The utility model can complete the two actions of internal expansion and external extrusion of the composite pipe joint 9 in one step, saving time, labor and working hours;

[0034] (2) The utility model simplifies the matching crimping molds, with a total of about 4 to 5 modules, thereby reducing complexity;

[0035] (3) The composite pipe joint 9 of the utility model performs external extrusion while expanding internally, thereby effectively reducing the amount of retraction of the internal expansion;

[0036] (4) The utility model can not only simultaneously perform the functions of internal expansion and external extrusion, but also perform the functions of internal expansion or external extrusion separately, and has high applicability.

[0037] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A one-step internal expansion and external extrusion composite pipe joint crimping machine, characterized in that: The invention comprises a module connecting plate, a driving component, a connecting component, an inner expansion head and an outer extrusion module; an outer extrusion module matching the outer part of the composite pipe joint is coaxially sleeved and fixed in the vertically arranged module connecting plate, and the inner expansion head matches the inner part of the composite pipe joint, and is coaxially sleeved in the outer extrusion module at intervals, thereby forming an annular gap matching the composite pipe joint between the inner expansion head and the outer extrusion module; the composite pipe coaxially passes through the left and right sides of the module connecting plate horizontally and transversely through the annular gap, and the left end of the composite pipe is coaxially sleeved in the composite pipe joint arranged horizontally and transversely, and a driving component is also coaxially arranged horizontally and transversely on the left end side of the composite pipe joint, and the driving end of the driving component is coaxially connected to the left end of the composite pipe joint through the connecting component horizontally and transversely to the right, and drives the composite pipe joint to perform horizontal and transverse reciprocating motion, thereby coaxially passing the composite pipe joint horizontally and transversely to the right between the inner expansion head and the outer extrusion module, and in this process, the composite pipe joint is synchronously expanded and extruded internally and externally through the inner expansion head and the outer extrusion module.

2. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 1, characterized in that: The left and right side surfaces of the outer extrusion module are respectively arranged coplanar with the corresponding side surfaces of the module connecting plate, and it is ensured that the outer extrusion module and the inner expansion head have no influence on the horizontal lateral movement of the composite pipe.

3. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 2, characterized in that: The external extrusion module is a circular ring structure, and a through groove matching the external extrusion module is coaxially embedded in the interior of the module connecting plate. The through groove horizontally and transversely penetrates the left and right sides of the module connecting plate, and the external extrusion module is coaxially sleeved in the through groove of the module connecting plate and fixedly connected to the module connecting plate through a matching angle; the inner surface of the external extrusion module is an inner cone surface matching the composite pipe joint, and its right end is a small diameter end, and the composite pipe joint is externally extruded by the external extrusion module.

4. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 1, characterized in that: It also includes a fixed tail plate, a main connecting rod and a locking nut; the fixed tail plate is vertically and longitudinally spaced on the left side of the module connecting plate and is aligned with the module connecting plate left and right; a main connecting rod is also symmetrically and horizontally arranged between the fixed tail plate and the module connecting plate, and the two main connecting rods are respectively spaced on the front and rear sides of the composite pipe joint, and the two ends of each main connecting rod are screwed and fixed to the fixed tail plate and the module connecting plate through locking nuts, thereby forming a hollow frame.

5. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 4, characterized in that: The driving assembly includes a hydraulic cylinder and a cylinder sliding connecting plate; a hydraulic cylinder is also horizontally and laterally arranged between the fixed tail plate and the module connecting plate and relative to the two main connecting rods, and the hydraulic cylinder and each of the main connecting rods are arranged without interfering with each other; the left end of the piston rod of the hydraulic cylinder is coaxially screwed and fixed with the right side surface of the fixed tail plate, and the right end of its piston rod extends horizontally and laterally in the direction of the module connecting plate and does not contact the module connecting plate; a cylinder sliding connecting plate is also vertically and longitudinally fixed on the right side surface of the cylinder of the hydraulic cylinder, and the front and rear ends of the cylinder sliding connecting plate are respectively connected to the corresponding main connecting rods for horizontal and horizontal sliding, and then, under the drive of the hydraulic cylinder, the cylinder of the hydraulic cylinder drives the cylinder sliding connecting plate to perform horizontal and horizontal reciprocating sliding.

6. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 5, characterized in that: It also includes an inner expansion connecting rod; an inner expansion connecting rod is also coaxially sleeved in the inner expansion head, the inner expansion connecting rod is threaded and fixed to the inner expansion head, and its two ends respectively extend vertically out of the left and right side surfaces of the inner expansion head; the left end of the inner expansion connecting rod is coaxially fixedly connected to the right end of the piston rod of the hydraulic cylinder, and does not interfere with the horizontal lateral reciprocating movement of the composite pipe joint, and the inner expansion head is fixed by the inner expansion connecting rod.

7. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 6, characterized in that: The inner expansion head is a circular structure that matches the interior of the composite pipe joint, and its left side surface is arranged on the left side of the left side surface of the outer extrusion module, and ensures that its right side surface is arranged inside the outer extrusion module; the outer surface of the inner expansion head is an outer cone surface that matches the composite pipe joint, and its left end is a small diameter end, and then the composite pipe joint is expanded internally through the inner expansion head.

8. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 5, characterized in that: The connecting assembly includes an openable and closable transition support sleeve, a buckled transition sleeve, a buckled center positioning sleeve and a transition flange; on the piston rod of the hydraulic cylinder, relative to the right side of the oil cylinder sliding connecting plate, an openable and closable transition support sleeve, a buckled transition sleeve and a buckled center positioning sleeve are coaxially sleeved in sequence from left to right, and the openable and closable transition support sleeve and the buckled transition sleeve are both coaxially sleeved on the piston rod of the hydraulic cylinder at intervals, and ensure that the buckled center positioning sleeve is in a free state in the axial direction; on the right side of the oil cylinder sliding connecting plate, relative to the position of the openable and closable transition support sleeve, a transition flange is coaxially screwed, and the openable and closable transition support sleeve is limited by the transition flange; the buckled transition sleeve The left end of the transition sleeve is coaxially sleeved with the right end of the openable and closable transition support sleeve, and the left half of the crimping center positioning sleeve is coaxially sleeved in the crimping transition sleeve; the left end of the composite pipe joint is coaxially sleeved on the right half of the crimping center positioning sleeve, and is coaxially pressed against the right end face of the crimping transition sleeve, and then the composite pipe joint is aligned with the inner expansion head and the outer extrusion module respectively through the cooperation of the crimping transition sleeve and the crimping center positioning sleeve, and then with the sliding of the cylinder sliding connecting plate, the composite pipe joint is coaxially passed horizontally to the right between the inner expansion head and the outer extrusion module through the cooperation of the openable and closable transition support sleeve, the crimping transition sleeve and the crimping center positioning sleeve.

9. The one-step internal expansion and external extrusion composite pipe joint crimping machine according to claim 8, characterized in that: The openable and closable transition support sleeve is formed by two semicircular plates aligned and spliced ​​together coaxially, and the two semicircular plates are movably connected by a movable pin shaft, so that the composite pipe joint is supported by the openable and closable transition support sleeve, and the spacing between the oil cylinder sliding connection plate and the buckled transition sleeve is adjusted by the openable and closable transition support sleeve; waist-shaped holes are embedded and opened on each semicircular plate at intervals along its length direction, so that the weight of the openable and closable transition support sleeve is reduced by the waist-shaped holes; U-shaped handles are respectively disposed along the length direction of the edges of the two semicircular plates on the other side of the position where the movable pin shaft is set, so that the openable and closable transition support sleeve is assisted in installation by the U-shaped handles.

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