Pipe fitting necking device

Abstract

The utility model provides a pipe fitting necking device. The pipe fitting necking device comprises a rack, a clamping mechanism and a necking mechanism, and the rack comprises a top plate; the two clamping mechanisms are arranged in parallel at intervals, each clamping mechanism comprises a set of symmetrically-arranged clamping dies, arc-shaped grooves are formed in the opposite faces of the set of clamping dies and used for clamping a pipe fitting to be necked, moving bases are arranged on the opposite faces of the set of clamping dies respectively, the set of clamping dies are connected with the corresponding moving bases through bolts, and the arc-shaped grooves are used for clamping the pipe fitting to be necked. The bottom face of the movable base is slidably connected with the sliding rail, and a driving assembly is arranged on the outer side face of the movable base. The necking mechanism is arranged at the other end of the top plate, and the necking end of the necking mechanism is used for necking one end of the pipe fitting. By means of the scheme, the pipe fitting can be kept fixed in the necking process, the coaxiality of the necking part and the non-necking part of the pipe fitting is kept consistent, the product precision is improved, and the clamping die is convenient to replace and install and high in efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe processing equipment, in particular to a pipe necking device. Background Art

[0002] Neck reduction refers to reducing the diameter of a steel pipe at one end to facilitate the connection of the steel pipe. With the improvement of automation, the traditional clamping mechanism cannot meet the precision requirements of existing equipment. The fixing effect of the pipe fittings is not good during the neck reduction process. The pipe fittings are prone to offset and sliding during the mobile shrinking process, so that the coaxiality of the necked part and the non-necked part cannot be consistent. In addition, some clamps are not convenient to disassemble, install and replace the corresponding model of shrinking mold according to the actual diameter of the shrinking pipe. The operation is complicated and cumbersome, which affects the actual processing efficiency of the pipe fittings. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a pipe necking device, which keeps the pipe fixed during the necking process, keeps the coaxiality of the necked part of the pipe consistent with that of the non-necked part, improves product precision, and makes the clamping mold easy to replace and install with high efficiency.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A necking device comprises: a frame, a clamping mechanism, and a necking mechanism, wherein the frame comprises a top plate, one end of which is provided with two sets of parallel slide rails at intervals, and the two sets of slide rails are arranged along the width direction of the top plate;

[0006] Two clamping mechanisms are arranged in parallel and at intervals, and the clamping mechanism includes a group of symmetrically arranged clamping molds, one of the clamping molds is provided with an arc groove on one side opposite to the other, for clamping the pipe to be necked, and one of the clamping molds is provided with a movable seat on one side opposite to the other, and one of the clamping molds is connected to the corresponding movable seat by bolts, and the axis of the bolt is perpendicular to the axis of the arc groove, and the bottom surface of the movable seat is slidably connected to the slide rail, and the outer side surface of the movable seat is provided with a driving assembly for driving the movable seat to make a group of clamping molds move relative to or opposite to each other along the slide rail;

[0007] The necking mechanism is arranged at the other end of the top plate, and the necking mechanism comprises a necking end, which is used for necking one end of the pipe fitting.

[0008] Furthermore, a group of avoidance grooves is provided between the two groups of slide rails, one end of one group of avoidance grooves respectively passes through both sides of the top plate, and one group of avoidance grooves is symmetrical about the midline of the length direction of the top plate, and mounting seats are provided on both sides of one group of avoidance grooves, and a plurality of guide light axes are vertically provided on the bottom surface of the top plate, and the driving assembly includes a force-boosting rocker arm, one end of the force-boosting rocker arm is provided with a first-level force-boosting connecting rod, one end of the first-level force-boosting connecting rod is rotatably connected to the moving seat, and the other end of the force-boosting rocker arm is rotatably provided with a second-level force-boosting connecting rod, the middle part of the force-boosting rocker arm is rotatably connected to the mounting seat, one end of the second-level force-boosting connecting rod is rotatably provided with a sliding block, the sliding block is slidably connected to the guide light axis, and a cylinder is vertically provided on the bottom surface of the sliding block, and the bottom of the cylinder is connected to the frame.

[0009] Furthermore, a protrusion is provided on one side of the movable seat, and a groove is provided on the opposite side of a set of clamping molds, the protrusion is embedded in the groove, and a set of reinforcing ribs are provided at intervals on the other side of the movable seat, and the force-enhancing primary connecting rod is rotatably connected to the reinforcing ribs.

[0010] Furthermore, a floating joint is provided at the output end of the oil cylinder, and the floating joint is connected to the bottom surface of the sliding block.

[0011] Furthermore, a transverse plate is provided on one side opposite to the other side of a group of reinforcing ribs, and a guide block is provided on the bottom surface of the transverse plate, and the guide block is slidably connected to the slide rail.

[0012] Furthermore, a V-shaped block is provided at one end of the clamping mechanism, and the projections of the inclined surfaces on both sides of the V-shaped block on the necking mechanism are tangent to the outer periphery of the necking end.

[0013] The beneficial effects of the utility model are:

[0014] One end of the necked pipe is inserted into the necking end of the necking mechanism, and the other end is clamped and fixed by two clamping mechanisms. The axis of the arc groove on the clamping die of the clamping mechanism is collinear with the axis of the necking end of the necking mechanism, thereby preventing the pipe from shaking during the necking process, ensuring the coaxial accuracy of the pipe after necking, and the pipe is evenly stressed during the clamping process. The clamping die is connected to the movable seat with bolts for easy replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0016] Figure 1 A schematic diagram of an application scenario of the present application is shown.

[0017] Figure 2 A schematic diagram showing the projection position of the V-shaped block of the present application on the necking end is shown.

[0018] Figure 3 A schematic diagram of the connection structure between the clamping mechanism and the top plate of the present application is shown.

[0019] Figure 4 A schematic diagram of the installation of components on the top plate of the present application is shown.

[0020] Figure 5 An exploded schematic diagram of the clamping mechanism of the present application is shown.

[0021] Markings in the figure: frame -10, clamping mechanism -20, necking mechanism -30, top plate -11, slide rail -12, clamping mold -21, arc groove -211, pipe fitting -1, moving seat -22, necking end -31, avoidance groove -13, mounting seat -14, guide light axis -15, force-enhancing rocker arm -23, force-enhancing first-level connecting rod -24, force-enhancing second-level connecting rod -25, slider -26, cylinder -27, bump -221, bolt -212, groove -213, reinforcing rib -222, floating joint -28, cross plate -223, guide block -224, V-block -16. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] like Figure 1-Figure 5 As shown, this embodiment provides a pipe necking device, including: a frame 10, a clamping mechanism 20, and a necking mechanism 30.

[0024] The frame 10 includes a top plate 11 , and two sets of parallel slide rails 12 are spaced apart at the front end of the top plate 11 , so that the two sets of slide rails 12 are arranged along the width direction of the top plate 11 and are parallel to the width direction of the top plate 11 .

[0025] The necking mechanism 30 is disposed at the rear end of the top plate 11 , and the necking end 31 of the necking mechanism 30 is used for necking one end of the pipe fitting 1 .

[0026] Two clamping mechanisms 20 are arranged in parallel and at intervals, and the clamping mechanism 20 includes a group of symmetrically arranged clamping molds 21 and two movable seats 22. The opposite sides of a group of clamping molds 21 are provided with arc grooves 211 for clamping the pipe 1 to be necked. The two movable seats 22 are respectively arranged on the opposite sides of a group of clamping molds 21. The opposite sides of a group of clamping molds 21 are connected to the corresponding movable seats 22 by bolts 212, and the axis of the bolts 212 is perpendicular to the axis of the arc groove 211. When the diameter of the pipe 1 to be necked is different, the corresponding group of clamping molds 21 can be replaced by removing the bolts 212, so that the replacement operation is convenient, and it can be ensured that the axis of the arc groove 211 corresponding to the replaced group of clamping molds 21 is kept in line with the axis of the necking end 31 of the necking mechanism 30, thereby avoiding affecting the coaxiality of the pipe 1 after necking. The bottom surface of the movable seat 22 is slidably connected to the slide rail 12, and the outer side surface of the movable seat 22 is provided with a driving assembly for driving the movable seat 22 so that a group of clamping molds 21 are opposite to each other along the slide rail 12 to clamp the pipe 1 to be necked, or move away from each other to loosen the necked pipe 1.

[0027] Specifically, Figure 2 - Figure 5 As shown, a set of avoidance grooves 13 is provided between the two sets of slide rails 12, and the outer ends of the set of avoidance grooves 13 respectively penetrate the sides of the top plate 11 on both sides, and four guide light axes 15 are vertically provided on the bottom surface of the top plate 11. The set of avoidance grooves 13 are symmetrically arranged about the long axis of the top plate 11, and mounting seats 14 are respectively provided on both sides of the set of avoidance grooves 13. The driving assembly includes two force-enhancing rocker arms 23, two force-enhancing primary connecting rods 24, two force-enhancing secondary connecting rods 25, a slider 26, a cylinder 27, and a floating joint 28. The cylinder 27 is vertically arranged, and the bottom of the cylinder 27 is installed at the lower end of the frame 10. The bottom center of the slider 26 is connected to the upper end of the floating joint 28, and the lower end of the floating joint 28 is connected to the output end of the cylinder 27. 6 is slidably connected to the four guide light shafts 15, the lower ends of the booster secondary connecting rods 25 are rotatably connected to the two sides of the slider 26, so that the upper ends of the two booster secondary connecting rods 25 are rotatably connected to the lower ends of the two booster rocker arms 23, the middle parts of the two booster rocker arms 23 are rotatably connected to a corresponding set of mounting seats 14, the upper ends of the two booster rocker arms 23 are rotatably connected to the two booster primary connecting rods 24, the lower ends of the two booster primary connecting rods 24 are rotatably connected to the moving seat 22, and each rotating connection is connected by a pin shaft.

[0028] When in use, start the cylinder 27, so that the cylinder 27 pushes the slider 26 to move upward along the guide light axis 15, so that the upper end of the secondary force-boosting connecting rod 25 rotates downward, so that the secondary force-boosting connecting rod 25 drives the force-boosting rocker arm 23 and the connection between the secondary force-boosting connecting rod 25 to move synchronously, so that the force-boosting rocker arm 23 rotates around the connection between the force-boosting rocker arm 23 and the movable seat 22, so that the upper end of the force-boosting rocker arm 23 rotates downward, so that the force-boosting rocker arm 23 drives the connection between the primary force-boosting connecting rod 24 and the movable seat 22 to approach the pipe fitting 1 to be necked, thereby clamping the pipe fitting 1.

[0029] More specifically, Figure 5 As shown, a side of the movable seat 22 facing a group of clamping molds 21 is provided with a protrusion 221, and a side of a group of clamping molds 21 facing the movable seat 22 is provided with a groove 213. The protrusion 221 is engaged with the groove 213 to further improve the position accuracy of the group of clamping molds 21 after installation. A group of reinforcing ribs 222 are provided at intervals on the other side of the movable seat 22, and the force-enhancing first-level connecting rod 24 is rotatably connected to the reinforcing ribs 222.

[0030] Specifically, as shown in Figure 1, Figure 5 As shown, a transverse plate 223 is provided on the opposite side of a group of reinforcing ribs 222, and a guide block 224 is provided on the bottom surface of the transverse plate 223. The guide block 224 is slidably connected to the slide rail 12 to reduce the friction between the moving seat 22 and the track 12.

[0031] Specifically, Figure 2 , Figure 4 As shown, one end of the two clamping mechanisms 20 is respectively provided with a V-shaped block 16, and the projections of the inclined surfaces on both sides of the V-shaped block 16 on the necking end 31 are tangent to the outer periphery of the necking end 31. When in use, the necking end of the pipe fitting 1 to be necked is placed in the necking end 31, and the parts of the pipe fitting 1 that do not need to be necked are supported and limited by the two V-shaped blocks 16, so as to facilitate the two clamping mechanisms 20 to clamp the pipe fitting 1 when necking.

[0032] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A pipe necking device, comprising: The frame (10), the clamping mechanism (20), and the necking mechanism (30) are characterized by: The frame (10) comprises a top plate (11), one end of which is provided with two sets of parallel slide rails (12) at intervals, and the two sets of slide rails (12) are arranged along the width direction of the top plate (11); Two clamping mechanisms (20) are arranged in parallel and at intervals, and the clamping mechanism (20) comprises a group of symmetrically arranged clamping dies (21), one side of each clamping dies (21) is provided with an arc groove (211) for clamping the pipe (1) to be necked, and one side of each clamping dies (21) is provided with a movable seat (22) on each side opposite to the other. The clamping dies (21) are connected to the corresponding movable seat (22) by bolts (212), and the axis of the bolts (212) is perpendicular to the axis of the arc groove (211). The bottom surface of the movable seat (22) is slidably connected to the slide rail (12), and the outer side surface of the movable seat (22) is provided with a driving assembly for driving the movable seat (22) so that the group of clamping dies (21) moves relative to or opposite to each other along the slide rail (12); The necking mechanism (30) is arranged at the other end of the top plate (11), and the necking end (31) of the necking mechanism (30) is used to neck one end of the pipe fitting (1).

2. The pipe necking device according to claim 1, characterized in that: A set of avoidance grooves (13) is provided between the two sets of slide rails (12), one end of each set of avoidance grooves (13) respectively passes through two sides of the top plate (11), and each set of avoidance grooves (13) is symmetrical about the long axis of the top plate (11), mounting seats (14) are respectively provided on two sides of each set of avoidance grooves (13), a plurality of guide optical axes (15) are vertically provided on the bottom surface of the top plate (11), and the driving component comprises a force-enhancing rocker arm (23), one end of the force-enhancing rocker arm (23) is provided with a force-enhancing primary connecting rod (24), and the force-enhancing rocker arm (23) is provided with a force-enhancing primary connecting rod (24). One end of the primary force connecting rod (24) is rotatably connected to the moving seat (22), the other end of the force-enhancing rocker arm (23) is rotatably provided with a secondary force-enhancing connecting rod (25), the middle part of the force-enhancing rocker arm (23) is rotatably connected to the mounting seat (14), one end of the secondary force-enhancing connecting rod (25) is rotatably provided with a slider (26), the slider (26) is slidably connected to the guide optical axis (15), the bottom surface of the slider (26) is vertically provided with an oil cylinder (27), and the bottom of the oil cylinder (27) is connected to the frame (10).

3. The pipe necking device according to claim 2, characterized in that: A convex block (221) is provided on one side of the movable seat (22), a groove (213) is provided on the opposite side of a set of clamping molds (21), the convex block (221) is engaged with the groove (213), a set of reinforcing ribs (222) are provided at intervals on the other side of the movable seat (22), and a force-enhancing primary connecting rod (24) is rotatably connected to the reinforcing rib (222).

4. The pipe necking device according to claim 2, characterized in that: The output end of the oil cylinder (27) is provided with a floating joint (28), and the floating joint (28) is connected to the bottom surface of the sliding block (26).

5. The pipe necking device according to claim 3, characterized in that: A transverse plate (223) is provided on the opposite side of a group of reinforcing ribs (222), and a guide block (224) is provided on the bottom surface of the transverse plate (223). The guide block (224) is slidably connected to the slide rail (12).

6. The pipe necking device according to claim 1, characterized in that: A V-shaped block (16) is provided at one end of the clamping mechanism (20), and projections of inclined surfaces on both sides of the V-shaped block (16) on the necking mechanism (30) are tangent to the outer periphery of the necking end (31).

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