Tool for solving crumple of necking pipe end

Abstract

The utility model relates to the technical field of welded pipe necking, in particular to a tool for solving necking pipe end collapse, which comprises an inner support tool, an inner support fixing rod is arranged at the left end of the inner support tool, and a necking die is arranged outside the inner support tool. One end of the piston rod of the electric cylinder extends to drive the movable plate to move rightwards, the movable plate pushes the connecting rod, the connecting rod pushes the top plate to extend out of the inserting block, the top plate abuts against the inner supporting die holder, and therefore the inner supporting die holder can be quickly assembled; the electric cylinder drives the movable plate to move leftwards to drive the top plate to retract into the inserting block, and the inner supporting die holder can be quickly taken down; according to the inner supporting tool, the inner supporting die base can be rapidly disassembled, when the necking die is used for conducting necking operation on a welded pipe workpiece, the welded pipe workpiece is located between the necking die and the inner supporting tool, in this way, the inner supporting tool can support the inner wall of the welded pipe workpiece, the problem that the necking pipe end crumples and deforms due to the fact that stress of the welded pipe is nowhere released is solved, and the service life of the welded pipe is prolonged. And the necking quality of the welded pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe necking, in particular to a tooling for solving the collapse of the necked pipe end. Background Technique

[0002] Welded pipe necking is an important process in the processing of welded pipes. It is achieved by processing the welded pipes to reduce their diameters in one or several sections, thereby meeting specific dimensional requirements or improving the performance of the welded pipes to meet specific usage needs.

[0003] At present, a common method for necking welded pipes is to press the welded pipes through a die to reduce their diameters. This method is suitable for mass production. However, in actual production work, it is found that the necking of welded pipes is prone to collapse and deformation at the necked pipe end due to the lack of stress release, resulting in the quality problem of the collapse of the pipe end of the welded pipe. Therefore, a tooling for solving the collapse of the necked pipe end is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a tooling for solving the collapse of the necked pipe end to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A tooling for solving the collapse of the necked pipe end, including an inner support tooling. The left end of the inner support tooling is provided with an inner support fixing rod. A necking die is arranged outside the inner support tooling. A welded pipe workpiece is arranged on the right side of the inner support tooling.

[0006] The inner support tooling includes an inner support die base and a connection seat. A positioning groove is opened on the left side wall of the inner support die base, and a slot is opened on the inner side wall of the positioning groove.

[0007] The connection seat includes a positioning block. The left side wall of the positioning block is fixedly connected to the right side wall of the inner support fixing rod. The right side wall of the positioning block is fixedly connected with an insertion block. A first through groove is opened inside the positioning block. A second through groove is opened inside the insertion block. The second through groove is communicated with the first through groove. Two top plates are symmetrically and slidably connected to the outer side wall of the insertion block. An installation groove is opened on the right side wall of the inner support fixing rod. An electric cylinder is installed on the inner side wall of the installation groove. One end of the piston rod of the electric cylinder is fixedly connected with a movable plate. Two connecting rods are symmetrically hinged to the outer side wall of the movable plate. The end of the connecting rod far away from the movable plate is hinged to the outer side wall of the top plate.

[0008] As a further preference of this technical solution: The outer wall contour of the inner support die base matches the inner wall contour of the welded pipe workpiece.

[0009] As a further preference of this technical solution: Rubber pads are bonded to the mutually repulsive sides of the two top plates.

[0010] As a further preference of this technical solution: Two connecting blocks are symmetrically and fixedly connected to the outer side wall of the top plate.

[0011] As a further preference of this technical solution: A spring is fixedly connected between the opposite sides of the connecting block and the plug block.

[0012] As a further preference of this technical solution: A control button is installed on the front surface of the inner support fixing rod, and the electrical output end of the control button is electrically connected to the electrical input end of the electric cylinder through a wire.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] One end of the piston rod of the electric cylinder of the present utility model extends to drive the movable plate to move to the right. The movable plate pushes the connecting rod, and the connecting rod pushes the top plate to extend the plug block. The top plate presses against the inner support die base to complete the rapid assembly of the inner support die base. Similarly, the electric cylinder drives the movable plate to move left to drive the top plate to retract into the plug block, and the inner support die base can be quickly removed, realizing the rapid disassembly of the inner support die base. When using a necking die to perform necking operation on a welded pipe workpiece, the welded pipe workpiece is located between the necking die and the inner support tooling. In this way, the inner support tooling can support the inner wall of the welded pipe workpiece, avoiding the problem of necking tube end collapse and deformation caused by the stress of the welded pipe having nowhere to release, improving the quality of the welded pipe necking, and the inner support die base is convenient to assemble and disassemble, facilitating the replacement of the inner support die base to adapt to welded pipe workpieces of different specifications, bringing convenience to the welded pipe necking work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the inner support fixing rod and the inner support die base of the present utility model;

[0017] Figure 3 is the sectional structural schematic diagram of the inner support die base of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the inner support die base and the positioning groove of the present utility model;

[0019] Figure 5 is the sectional structural schematic diagram of the positioning block of the present utility model.

[0020] In the figure:

[0021] 1. Inner support tooling; 2. Inner support fixing rod; 3. Welded pipe workpiece; 4. Necking die; 5. Control button;

[0022] 11. Inner support die base; 111. Positioning groove; 112. Insert slot;

[0023] 12. Connecting seat; 121. Positioning block; 122. Insert block; 123. First through groove; 124. Second through groove; 125. Top plate; 126. Electric cylinder; 127. Movable plate; 128. Link rod; 129. Rubber pad; 1201. Connecting block; 1202. Spring; 1203. Installation groove. Specific implementation manner

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0026] Please refer to Figures 1-5 , the present invention provides a technical solution: A tooling for solving the necking and collapse of the pipe end, including an inner support tooling 1. The left end of the inner support tooling 1 is provided with an inner support fixing rod 2. The outside of the inner support tooling 1 is provided with a necking die 4. The right side of the inner support tooling 1 is provided with a welded pipe workpiece 3;

[0027] The inner support tooling 1 includes an inner support die base 11 and a connecting seat 12. A positioning groove 111 is opened on the left side wall of the inner support die base 11, and a slot 112 is opened on the inner side wall of the positioning groove 111;

[0028] The connecting seat 12 includes a positioning block 121. The left side wall of the positioning block 121 is fixedly connected to the right side wall of the inner support fixing rod 2. A plug block 122 is fixedly connected to the right side wall of the positioning block 121. A first through groove 123 is formed inside the positioning block 121. A second through groove 124 is formed inside the plug block 122. The second through groove 124 communicates with the first through groove 123. Two top plates 125 are symmetrically and slidably connected to the outer side wall of the plug block 122. An installation groove 1203 is formed in the right side wall of the inner support fixing rod 2. An electric cylinder 126 is installed on the inner side wall of the installation groove 1203. One end of the piston rod of the electric cylinder 126 is fixedly connected to a movable plate 127. Two connecting rods 128 are symmetrically hinged to the outer side wall of the movable plate 127. The end of the connecting rod 128 far from the movable plate 127 is hinged to the outer side wall of the top plate 125.

[0029] With the above settings, when one end of the piston rod of the electric cylinder 126 extends, it drives the movable plate 127 to move to the right. The movable plate 127 pushes the connecting rod 128, and the connecting rod 128 pushes the top plate 125 to extend out of the plug block 122. The top plate 125 presses against the inner support die base 11, completing the rapid assembly of the inner support die base 11. Similarly, when the electric cylinder 126 drives the movable plate 127 to move leftward, it drives the top plate 125 to retract into the plug block 122, and the inner support die base 11 can be quickly removed, realizing the rapid disassembly of the inner support die base 11. When using the necking die 4 to perform necking operation on the welded pipe workpiece 3, the welded pipe workpiece 3 is located between the necking die 4 and the inner support tooling 1. In this way, the inner support tooling 1 can support the inner wall of the welded pipe workpiece 3, avoiding the problem that the necked pipe end collapses and deforms due to the stress of the welded pipe having nowhere to release, improving the quality of the welded pipe necking, and the inner support die base 11 is convenient to assemble and disassemble, facilitating the replacement of the inner support die base 11 to adapt to welded pipe workpieces 3 of different specifications.

[0030] In this embodiment, specifically: the outer wall contour of the inner support die base 11 matches the inner wall contour of the welded pipe workpiece 3; the size and inner wall contour of the inner support die base 11 can be customized according to the size and outer wall contour of the welded pipe workpiece 3.

[0031] In this embodiment, specifically: rubber pads 129 are bonded to the mutually repulsive sides of the two top plates 125; the rubber pads 129 can increase the friction between the top plates 125 and the inner support die base 11, preventing the inner support die base 11 from falling off.

[0032] In this embodiment, specifically: two connecting blocks 1201 are symmetrically and fixedly connected to the outer side wall of the top plate 125; it is convenient for the connecting blocks 1201 to move synchronously with the top plate 125.

[0033] In this embodiment, specifically: a spring 1202 is fixedly connected between the opposite sides of the connecting block 1201 and the plug block 122; when the top plate 125 extends out of the plug block 122, the spring 1202 is compressed. When it is necessary to disassemble the inner support die base 11, the elastic force of the spring 1202 can assist the top plate 125 to retract into the plug block 122.

[0034] In this embodiment, specifically, a control button 5 is installed on the front surface of the inner support fixing rod 2, and the electrical output end of the control button 5 is electrically connected to the electrical input end of the electric cylinder 126 through a wire, facilitating the control of the working state of the electric cylinder 126.

[0035] The working principle of the present utility model is as follows: when the piston rod end of the electric cylinder 126 extends, it drives the movable plate 127 to move to the right. The movable plate 127 pushes the connecting rod 128, and the connecting rod 128 pushes the top plate 125 to extend the insertion block 122. The top plate 125 abuts against the inner support die base 11 to complete the rapid assembly of the inner support die base 11. Similarly, when the electric cylinder 126 drives the movable plate 127 to move leftward, it drives the top plate 125 to retract the insertion block 122 inside, and the inner support die base 11 can be quickly removed, realizing the rapid disassembly of the inner support die base 11. When using the necking die 4 to perform necking operation on the welded pipe workpiece 3, the welded pipe workpiece 3 is located between the necking die 4 and the inner support tooling 1. In this way, the inner support tooling 1 can support the inner wall of the welded pipe workpiece 3, avoiding the problem that the necked pipe end collapses and deforms due to the stress having nowhere to release, improving the quality of the welded pipe necking. Moreover, the inner support die base 11 is convenient to assemble and disassemble, facilitating the replacement of the inner support die base 11 to adapt to different specifications of the welded pipe workpiece 3, bringing convenience to the welded pipe necking work.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling for solving the necking and collapse of the pipe end, characterized in that: It includes an internal support tooling (1). An internal support fixing rod (2) is provided at the left end of the internal support tooling (1). A necking die (4) is provided outside the internal support tooling (1). A welded pipe workpiece (3) is provided to the right of the internal support tooling (1). The internal support tooling (1) includes an internal support die base (11) and a connection seat (12). A positioning groove (111) is formed in the left side wall of the internal support die base (11), and a slot (112) is formed in the inner side wall of the positioning groove (111). The connection seat (12) includes a positioning block (121). The left side wall of the positioning block (121) is fixedly connected to the right side wall of the internal support fixing rod (2). An insertion block (122) is fixedly connected to the right side wall of the positioning block (121). A first through groove (123) is formed inside the positioning block (121). A second through groove (124) is formed inside the insertion block (122). The second through groove (124) communicates with the first through groove (123). Two top plates (125) are symmetrically and slidably connected to the outer side wall of the insertion block (122). An installation groove (1203) is formed in the right side wall of the internal support fixing rod (2). An electric cylinder (126) is installed on the inner side wall of the installation groove (1203). One end of the piston rod of the electric cylinder (126) is fixedly connected to a movable plate (127). Two connecting rods (128) are symmetrically hinged to the outer side wall of the movable plate (127). The end of the connecting rod (128) far from the movable plate (127) is hinged to the outer side wall of the top plate (125).

2. The tooling for solving the necking and buckling of the tube end according to claim 1, characterized in that: The outer wall contour of the internal support die base (11) matches the inner wall contour of the welded pipe workpiece (3).

3. The tooling for solving the necking and buckling of the pipe end according to claim 2, characterized in that: Rubber pads (129) are bonded to the mutually repulsive sides of the two top plates (125).

4. The tooling for solving the necking and collapse of the pipe end according to claim 3, wherein: Two connecting blocks (1201) are symmetrically and fixedly connected to the outer side wall of the top plate (125).

5. The tooling for solving the necking and buckling of the pipe end according to claim 4, characterized in that: A spring (1202) is fixedly connected between the opposite sides of the connecting block (1201) and the insertion block (122).

6. The tooling for solving the necking and collapse of the pipe end according to claim 5, characterized in that: A control button (5) is installed on the front surface of the internal support fixing rod (2). The electrical output end of the control button (5) is electrically connected to the electrical input end of the electric cylinder (126) through a wire.

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