Reducer joint and production equipment

Abstract

The invention belongs to the technical field of composite pipes, and discloses a reducing pipe joint and production equipment. The production equipment comprises a workbench, a positioning groove formed in the workbench and used for containing a connector body, a lower bearing mechanism located below the positioning groove and used for supporting the lower end face of a rubber clamping sleeve, and a sleeve assembly located above the positioning groove and used for pressing the rubber clamping sleeve downwards. And the press-fitting mechanism is positioned above the positioning groove and is used for sequentially pressing the sleeve assembly and the clamping pipe downwards. The device has the following advantages and effects that the connector body is placed through the positioning groove in the workbench, positioning of the connector body is achieved, the rubber clamping sleeve is pressed into the channel of the connector body through cooperation of the sleeve assembly and the lower bearing mechanism, the outer edge of the rubber clamping sleeve is unfolded in the first clamping groove, and therefore the connector body can be clamped and assembled. And clamping and press-fitting of the clamping pipe are completed through the press-fitting mechanism, and the assembling efficiency of the reducing pipe joint is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite pipe, in particular to a reducing pipe joint and a production equipment. BACKGROUND

[0002] In the installation and connection of steel wire mesh skeleton plastic composite pipe, steel skeleton reinforced polyethylene composite pipe and other pipelines, a reducing pipe joint is needed to connect pipes with different diameters. There are many types of reducing pipe joints in the prior art, such as a reducing pipe joint disclosed in a Chinese utility model patent with the authorization announcement No. CN223318715U and a reducing pipe joint disclosed in a Chinese utility model patent with the authorization announcement No. CN210462104U. Most of the existing reducing pipe joints are expanded at the end of the metal pipeline. During the expansion process, the metal will undergo severe plastic deformation and thinning in the local area, resulting in that the mechanical strength of this area is lower than that of the pipe body. In a stress or vibration environment, the root of the expansion is prone to produce fatigue cracks first. SUMMARY

[0003] The purpose of the present application is to provide a reducing pipe joint which is assembled by multiple components to avoid the defects caused by the expansion of the metal pipe.

[0004] The above technical purpose of the present application is achieved by the following technical scheme: a reducing pipe joint, comprising a joint body, a rubber sleeve, a conical sleeve and a clamping pipe, a channel is formed in the inner wall of the joint body, a clamping groove one is formed in the inner wall of the channel, the rubber sleeve is formed with an outer edge, the outer edge is clamped in the clamping groove one, the clamping pipe is clamped on the joint body, a conical port is formed in the pipe opening of the clamping pipe, the conical port is sleeved on the outer wall of the conical sleeve, and the inner wall of the conical sleeve is sleeved on the outer wall of the rubber sleeve.

[0005] By adopting the above technical scheme, the rubber sleeve is embedded in the channel, and the outer edge is embedded in the clamping groove one to keep the position of the sleeve fixed. The clamping pipe is clamped at one end of the channel, the conical port at the end of the clamping pipe is sleeved on the outer wall of the conical sleeve, and the conical sleeve is sleeved on the outer wall of the rubber sleeve. The other end of the channel is used for connecting the pipeline, and the other end of the connecting pipe is also used for connecting the pipeline. Among them, the conical pipe and the conical port are processed by a numerical control machine tool cutter, not by expansion.

[0006] Further provided in the present application is that a clamping groove two is formed in the inner wall of the channel, a ring-shaped protrusion is formed at the end of the joint pipe, the ring-shaped protrusion is embedded in the clamping groove two, an elastic bellows is sleeved on the clamping pipe, a step is formed in the outer wall of the clamping pipe, and the two ends of the elastic bellows are respectively abutted against the step and the joint body.

[0007] By adopting the above technical scheme, the elastic force of the elastic bellows keeps the ring-shaped protrusion tightly in the clamping groove two, reducing looseness.

[0008] The further arrangement of the present application is a production equipment of the reducing pipe joint, which comprises a workbench, a positioning groove arranged on the workbench for placing the joint body, a lower supporting mechanism arranged below the positioning groove for supporting the lower end face of the rubber sleeve, a sleeve assembly arranged above the positioning groove for pressing the rubber sleeve, and a pressing mechanism arranged above the positioning groove for pressing the sleeve assembly and the clamping pipe in sequence.

[0009] By adopting the above technical scheme, in the assembling process of the reducing pipe joint, the rubber sleeve will be deformed first and then the outer edge of the rubber sleeve will be clamped in the first clamping groove during the process of being assembled into the joint body. Even if manual assembly is used, there is still a certain degree of difficulty, and the manual assembly cannot check whether the outer edge is assembled into the first clamping groove.

[0010] Therefore, the present application develops the production equipment of the reducing pipe joint. First, the joint body is placed in the positioning groove, the lower supporting mechanism supports the bottom of the rubber sleeve from below, and the sleeve assembly presses the rubber sleeve from above. The rubber sleeve is slowly pressed into the channel of the joint body from top to bottom through the cooperation of the sleeve assembly and the lower supporting mechanism. The edge of the rubber sleeve will be deformed upward until the outer edge moves to the first clamping groove, and the outer edge is unfolded and embedded in the first clamping groove.

[0011] Subsequently, the sleeve assembly is removed, the tapered cylinder is placed into the channel and is sleeved on the outer wall of the rubber sleeve, the elastic corrugated pipe is sleeved on the clamping pipe, the clamping pipe is vertically inserted into the channel of the joint body, and the pressing assembly presses the clamping pipe to be pressed into the joint body. It should be noted that the clamping pipe has a certain deformation capacity so that it will not be broken during the pressing process.

[0012] The further arrangement of the present application is that the positioning groove comprises a bottom wall, a circular placing groove and a hexagonal limiting groove from bottom to top, and the bottom wall is provided with a through hole.

[0013] The further arrangement of the present application is that the lower supporting mechanism comprises a lifting plate, a lifting cylinder for driving the lifting plate to lift, an outer cylinder tube fixed to the lifting plate, a middle shaft rotatably connected to the outer cylinder tube, a plurality of supporting pieces hinged to the middle shaft, and a driving motor for driving the middle shaft to rotate. The outer cylinder tube is provided with a plurality of guide holes for the supporting pieces to pass through, the middle shaft is fixed with a plurality of positioning portions, and the supporting pieces are blocked by the guide hole side wall and the positioning portions after the middle shaft rotates and the supporting pieces extend out of the guide holes. After the middle shaft reversely rotates, the supporting pieces retract into the guide holes.

[0014] By adopting the technical scheme, the outer tube is used for being inserted into the middle part of the rubber sleeve, so that the rubber sleeve is prevented from being turned over. Before the outer edge of the rubber sleeve moves to the first clamping groove, the supporting piece is partially extended to support the bottom of the rubber sleeve, so as to play a supporting role. After the outer edge of the rubber sleeve moves to the first clamping groove, the supporting piece can be completely extended and retracted multiple times, so as to help the outer edge to be completely stretched in the first clamping groove.

[0015] Further, the application provides that the number of the lifting cylinders is four, and the lifting cylinders are fixedly installed on the lower end surface of the workbench.

[0016] Further, the application provides that the number of the lifting cylinders is four, which helps to improve the stability of the lifting plate during lifting.

[0017] Further, the application provides that four guide columns are fixed on the upper end surface of the lifting cylinder, the guide columns are vertically arranged, the workbench is provided with four through holes, and the guide columns pass through the through holes upward.

[0018] Further, the application provides that the driving motor is a stepping motor, the lifting plate is fixedly installed with a mounting frame, the stepping motor is fixedly installed on the mounting frame, the output shaft of the stepping motor is fixed with a driving gear, the middle shaft is fixed with a driven gear, and the driven gear is engaged with the driving gear.

[0019] Further, the application provides that the sleeve assembly comprises a sleeve, a hand pressing part fixed on the outer wall of the sleeve, a plurality of movable rods, elastic sheets fixed on the lower ends of the movable rods, an adjusting ring located above the sleeve, a plurality of reset springs with upper ends fixed on the lower end surface of the adjusting ring and lower ends fixed on the upper end of the sleeve, a vertical first guide hole formed in the side wall of the sleeve, and a second guide hole obliquely arranged and connected to the lower end of the first guide hole. The number of the first guide holes is multiple and corresponds to the movable rods one by one, the number of the second guide holes is multiple and corresponds to the elastic sheets one by one, the movable rods are inserted into the first guide holes, the elastic sheets are inserted into the second guide holes, and the upper ends of the movable rods are fixed to the adjusting ring.

[0020] Further, the application provides that when the outer edge of the rubber sleeve moves to the first clamping groove, the pressing mechanism presses the adjusting ring downward, the adjusting ring drives the movable rods to descend, the elastic sheets at the lower ends of the movable rods extend out of the second guide holes and enter between the outer edge and the inner wall of the first clamping groove, and the outer edge is stretched in the first clamping groove.

[0021] Further, the application provides that the workbench is provided with a support, the pressing mechanism comprises a pressing cylinder and a pressing plate fixed on the piston rod of the pressing cylinder, and the pressing cylinder is fixedly installed on the support.

[0022] The beneficial effects of the present application are: the present application realizes the positioning of the joint body by placing the joint body in the positioning groove on the workbench, realizes the pressing assembly of the rubber sleeve into the channel of the joint body through the cooperation of the sleeve assembly and the lower supporting mechanism, and makes the outer edge of the rubber sleeve expand in the clamping groove I, realizes the clamping and pressing assembly of the clamping pipe through the pressing mechanism, and improves the assembly efficiency of the reducing pipe joint. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structural schematic diagram of the production equipment of the present application.

[0024] Figure 2 is the explosion schematic diagram between the positioning groove and the lower supporting mechanism of the present application.

[0025] Figure 3 is the structural relationship schematic diagram between the outer tube, the rubber sleeve and the sleeve of the present application

[0026] Figure 4 is the structural relationship schematic diagram between the outer tube, the middle shaft and the supporting piece of the present application.

[0027] Figure 5 is the state schematic diagram when the two sides of the supporting piece are respectively resisted by the positioning part and the guide hole.

[0028] Figure 6 is the state schematic diagram when the outer tube and the sleeve are resisted on the rubber sleeve of the present application.

[0029] Figure 7 is Figure 6 the enlarged view of A of

[0030] Figure 8 is the enlarged view of B of Figure 6

[0031] Figure 9 is the structural schematic diagram of the reducing pipe joint of the present application.

[0032] Figure 10 is the explosion schematic diagram of the reducing pipe structure of the present application.

[0033] Figure 11 is the clamping pipe structural schematic diagram of the present application.

[0034] Figure 12 is the internal structure schematic diagram of the joint body of the present application.

[0035] ​In the diagram, 1. Connector body; 11. Slot 1; 12. Slot 2; 13. Channel; 2. Rubber sleeve; 21. Outer edge; 3. Conical sleeve; 4. Connecting tube; 41. Conical opening; 42. Annular protrusion; 43. Step; 44. Elastic bellows; 5. Workbench; 51. Support; 52. Perforation; 6. Positioning groove; 61. Bottom wall; 62. Circular placement groove; 63. Hexagonal limiting groove; 7. Lower support mechanism; 71. Lifting plate; 72. Lifting cylinder; 73. Outer tube; 731. Guide hole; 74. Central shaft; 741. Positioning part; 75. Support plate; 76. Guide column; 77. Drive motor; 8. Sleeve assembly; 81. Sleeve; 811. First guide hole; 812. Second guide hole; 82. Hand pressing part; 83. Movable rod; 84. Elastic plate; 85. Adjusting ring; 86. Return spring; 9. Pressing mechanism; 91. Pressing cylinder; 92. Pressing plate. Detailed Implementation

[0036] A type of reducing pipe fitting, such as Figures 9 to 12 As shown, the connector includes a connector body 1, a rubber ferrule 2, a tapered sleeve 3, a clamping tube 4, and an elastic bellows tube 44. The connector body 1 has a channel 13 formed inside, and the inner wall of the channel 13 has two clamping grooves: a first groove 11 and a second groove 12. The rubber ferrule 2 has an outer edge 21, which is embedded in the first groove 11. The outer wall of the clamping tube 4 has an annular protrusion 42 and a step 43, with the annular protrusion 42 embedded in the second groove 12. The elastic bellows tube 44 is fitted onto the clamping tube 4, with one end abutting against the step 43 and the other end abutting against the end face of the connector body 1. The clamping tube 4 has a tapered opening 41 at its opening, which fits onto the outer wall of the tapered sleeve 3. The inner wall of the tapered sleeve 3 fits onto the outer wall of the rubber ferrule 2. The clamping tube 4 has a certain deformation capacity; by pressing the clamping tube 4, its end can be pressed into the channel 13, and its annular protrusion 42 can be embedded in the second groove 12.

[0037] A type of equipment for producing reducing pipe fittings, such as Figure 1 , Figure 2 As shown, the assembly includes a worktable 5, a positioning groove 6 disposed on the worktable 5, a lower support mechanism 7 located below the positioning groove 6, a pressing mechanism 9 located above the positioning groove 6, and a sleeve assembly. The positioning groove 6, from bottom to top, includes a bottom wall 61, a circular placement groove 62, and a hexagonal limiting groove 63. A through hole is formed in the bottom wall 61. The connector body 1 is placed inside the positioning groove 6, with the lower end of its channel 13 aligned with the through hole.

[0038] like Figure 3 , Figure 4 , Figure 5As shown, the lower support mechanism 7 includes a lifting plate 71, lifting cylinders 72 that drive the lifting plate 71 to rise and fall, an outer cylinder 73 fixed to the lifting plate 71, a central shaft 74 rotatably connected to the outer cylinder 73, eight support plates 75 hinged to the central shaft 74, and a drive motor 77 that drives the central shaft 74 to rotate. There are four lifting cylinders 72, which are mounted and fixed on the lower end face of the worktable 5. The piston rods of the lifting cylinders 72 are fixed to the lifting plate 71. Four guide columns 76 are fixed to the upper end face of the lifting cylinders 72. The guide columns 76 are vertically arranged, and the worktable 5 has four through holes 52 through which the guide columns 76 pass upwards.

[0039] The outer tube 73 has eight guide holes 731 on its side wall for the support piece 75 to pass through. The central shaft 74 has eight positioning parts 741 fixed on it. After the central shaft 74 rotates, the support piece 75 extends out of the guide hole 731 and is blocked on both sides by the side wall of the guide hole 731 and the positioning part 741 respectively. After the central shaft 74 rotates in the opposite direction, the support piece 75 retracts into the corresponding guide hole 731.

[0040] The drive motor 77 is a stepper motor. A mounting bracket is fixed to the lifting plate 71, and the stepper motor is fixed to the mounting bracket. A drive gear is fixed to the output shaft of the stepper motor, and a driven gear is fixed to the central shaft 74. The driven gear meshes with the drive gear. The drive motor 77 drives the drive gear to rotate, which in turn drives the driven gear and the central shaft 74 to rotate.

[0041] like Figure 6 , Figure 7 , Figure 8 As shown, the sleeve assembly 8 includes a sleeve 81, a hand-pressing part 82 fixed to the outer wall of the sleeve 81, multiple movable rods 83, elastic plates 84 fixed to the lower end of the movable rods 83, an adjusting ring 85 located above the sleeve 81, and eight return springs 86 whose upper ends are fixed to the lower end face of the adjusting ring 85 and whose lower ends are fixed to the upper end of the sleeve 81. The side wall of the sleeve 81 has a vertical first guide hole 811 and an inclined second guide hole 812 connected to the lower end of the first guide hole 811. There are eight first guide holes 811, each corresponding to one of the eight movable rods 83. There are eight second guide holes 812, each corresponding to one of the eight elastic plates 84. The movable rods 83 are inserted into the first guide holes 811, and the elastic plates 84 are inserted into the second guide holes 812. The upper ends of the eight movable rods 83 are all fixed to the adjusting ring 85.

[0042] like Figure 1 As shown, a bracket 51 is fixed on the workbench 5, and the pressing mechanism 9 includes a pressing cylinder 91 and a pressing plate 92 fixed on the piston rod of the pressing cylinder 91. The pressing cylinder 91 is mounted and fixed on the bracket 51.

[0043] Working principle: First, the connector body 1 is placed into the positioning groove 6. The hexagonal limiting groove 63 of the positioning groove 6 limits the connector body 1, preventing it from rotating. The lifting cylinder 72 drives the lifting plate 71 to rise, which in turn drives the outer tube 73 upward through the through hole and into the channel 13 of the connector body 1. At this time, the support plate 75 extends out from the guide groove, with its edge close to the inner wall of the channel 13, but not in contact with the inner wall of the channel 13. The operator manually puts the rubber clamp 2 on the outer tube 73, and the bottom of the rubber clamp 2 is supported by the support plate 75. The worker then presses the sleeve 81 onto the upper end of the rubber ferrule 2. As the lifting cylinder 72 drives the lifting plate 71 to descend, the worker holds the hand pressure part 82 and presses it down. The rubber ferrule 2 is pressed into the channel 13 until the outer edge 21 of the rubber ferrule 2 descends to the slot 11. At this time, the outer edge 21 extends in the slot 11. The drive motor 77 drives the central shaft 74 to rotate forward and backward repeatedly, causing the support piece 75 to fully extend into the gap between the outer edge 21 and the slot 11 and fully retract into the guide hole 731. The piston rod of the pressing cylinder 91 extends, driving the pressing plate 92 to descend and press down the adjusting ring 85. The descending adjusting ring 85 causes the elastic piece 84 to extend from the second guide hole 812 and enter the gap between the outer edge 21 and the slot 11. Through the movement of the elastic piece 84 and the support piece 75, the outer edge 21 is fully unfolded in the slot. Subsequently, the piston rod of the pressing cylinder 91 retracts, causing the pressing plate 92 to rise. The return spring 86 forces the adjusting ring 85 to rise, which in turn causes the movable rod 83 to rise. The movable rod 83 then causes the elastic plate 84 to retract back into the second guide hole 812. The operator manually removes the sleeve 81, moving it away from the connector body 1 in the positioning groove 6. The drive motor 77 drives the central shaft 74 to rotate, causing the support plate 75 to fully retract into the guide hole 731. The lifting cylinder 72 then drives the lifting seat to descend, causing the outer tube 73 to leave the connector body 1.

[0044] Subsequently, the staff placed the conical cylinder into the channel 13 so that it fit onto the outer wall of the rubber clamp 2, then put the elastic bellows 44 onto the clamping tube 4, and inserted the clamping tube 4 vertically downward into the channel 13 of the connector body 1. The pressing assembly pressed down the clamping tube 4 to press it into the connector body 1.

Claims

1. A reducing pipe fitting, characterized in that: The connector includes a connector body (1), a rubber ferrule (2), a conical sleeve (3) tube, and a clamping tube (4). The inner wall of the connector body (1) is formed with a channel (13), and the inner wall of the channel (13) is provided with a clamping groove (11). The rubber ferrule (2) is formed with an outer edge (21), and the outer edge (21) is clamped in the clamping groove (11). The clamping tube (4) is clamped on the connector body (1). The opening of the clamping tube (4) is formed with a conical opening (41), and the conical opening (41) is fitted on the outer wall of the conical sleeve (3) tube. The inner wall of the conical sleeve (3) tube is fitted on the outer wall of the rubber ferrule (2).

2. A reducing pipe fitting according to claim 1, characterized in that: The inner wall of the channel (13) is provided with a ring of grooves (12), and the end of the connector tube is provided with an annular protrusion (42). The annular protrusion (42) is embedded in the groove (12). The clamping tube (4) is covered with an elastic corrugated tube (44). The outer wall of the clamping tube (4) is formed with a step (43). The two ends of the elastic corrugated tube (44) abut against the step (43) and the connector body (1) respectively.

3. A production equipment for a reducing pipe fitting according to any one of claims 1-2, characterized in that: It includes a workbench (5), a positioning groove (6) set on the workbench (5) for placing the connector body (1), a lower support mechanism (7) located below the positioning groove (6) for supporting the lower end face of the rubber sleeve (2), a sleeve assembly located above the positioning groove (6) for pressing down the rubber sleeve (2), and a pressing mechanism (9) located above the positioning groove (6) for sequentially pressing down the sleeve assembly (8) and the clamping pipe (4).

4. The production equipment for a reducing pipe fitting according to claim 3, characterized in that: The positioning groove (6) includes, from bottom to top, a bottom wall (61), a circular placement groove (62), and a hexagonal limiting groove (63), and the bottom wall (61) has a through hole.

5. The production equipment for a reducing pipe fitting according to claim 3, characterized in that: The lower support mechanism (7) includes a lifting plate (71), a lifting cylinder (72) for driving the lifting plate (71) to rise and fall, an outer tube (73) fixed to the lifting plate (71), a central shaft (74) rotatably connected to the outer tube (73), multiple support pieces (75) hinged to the central shaft (74), and a drive motor (77) for driving the central shaft (74) to rotate. The outer tube (73) has multiple guide holes (731) on its side wall for the support pieces (75) to pass through. The central shaft (74) has multiple positioning parts (741) fixed on it. After the central shaft (74) rotates, the support pieces (75) extend out of the guide holes (731) and are blocked on both sides by the side wall of the guide holes (731) and the positioning parts (741) respectively. After the central shaft (74) rotates in the opposite direction, the support pieces (75) retract into the guide holes (731).

6. The production equipment for a reducing pipe fitting according to claim 5, characterized in that: The number of lifting cylinders (72) is four. The lifting cylinders (72) are installed and fixed on the lower end face of the workbench (5). The piston rod of the lifting cylinder (72) is fixed to the lifting plate (71).

7. The production equipment for a reducing pipe fitting according to claim 5, characterized in that: The upper end face of the lifting cylinder (72) is fixed with four guide columns (76), the guide columns (76) are vertically arranged, and the worktable (5) has four through holes (52), the guide columns (76) pass through the through holes (52) upward.

8. The production equipment for a reducing pipe fitting according to claim 5, characterized in that: The drive motor (77) is a stepper motor. The lifting plate (71) is fixed with a mounting bracket. The stepper motor is fixed on the mounting bracket. The output shaft of the stepper motor is fixed with a drive gear. The central shaft (74) is fixed with a driven gear. The driven gear meshes with the drive gear.

9. The production equipment for a reducing pipe fitting according to claim 8, characterized in that: The sleeve assembly (8) includes a sleeve (81), a hand-pressing part (82) fixed to the outer wall of the sleeve (81), multiple movable rods (83), an elastic plate (84) fixed to the lower end of the movable rod (83), an adjusting ring (85) located above the sleeve (81), and multiple return springs (86) with their upper ends fixed to the lower end face of the adjusting ring (85) and their lower ends fixed to the upper end of the sleeve (81). The sleeve (81) has a vertical first guide hole (811) on its side wall, is inclined and connected to the... The first guide hole (811) has a second guide hole (812) at the lower end. There are multiple first guide holes (811) and each one corresponds to one of the movable rods (83). There are multiple second guide holes (812) and each one corresponds to one of the elastic pieces (84). The movable rods (83) are inserted into the first guide holes (811), and the elastic pieces (84) are inserted into the second guide holes (812). The upper ends of the multiple movable rods (83) are fixed to the adjusting ring (85).

10. The production equipment for a reducing pipe fitting according to claim 3, characterized in that: The workbench (5) is provided with a bracket (51), and the pressing mechanism (9) includes a pressing cylinder (91) and a pressing plate (92) fixed to the piston rod of the pressing cylinder (91). The pressing cylinder (91) is installed and fixed on the bracket (51).

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