Metal pipe reducing forming device capable of reducing pipe wall wrinkles

Abstract

The utility model relates to the technical field of metal pipe processing, and particularly discloses a metal pipe reducing forming device capable of reducing pipe wall wrinkles, which comprises a workbench, a controller, a reducing assembly, a mounting plate, a mandrel and a driving assembly, and the controller, the reducing assembly and the mounting plate are all fixedly arranged at the top of the workbench. The controller is electrically connected with the reducing assembly and the driving assembly, the mandrel is fixedly arranged on the surface of the mounting plate and penetrates through the interior of the reducing assembly, a reducing section supporting assembly and a large-diameter section supporting assembly are sequentially arranged on the mandrel, and the reducing section supporting assembly corresponds to the reducing assembly. The supporting body makes contact with the inner wall of the large-diameter section of the metal pipe, the position of the metal pipe can be limited, the metal pipe, the mandrel and the reducing assembly are coaxial, the end of the supporting body is the cambered surface and attached to the supporting plate, the bent position of the reducing section can be supported and protected, and wrinkles or cracks are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal pipe processing technical field, concretely is a kind of metal pipe reducing forming device of reducing pipe wall wrinkle. BACKGROUND

[0002] Traditional metal pipe reducing processing usually adopts the mode of directly placing metal pipe in the center of eight-petal mould of pipe reducing machine, then starting equipment, relying on the radial contraction movement of mould petal piece to extrude specific section of pipe material, to realize diameter reduction.

[0003] However, this process has obvious limitations: on the one hand, during reducing, the coaxiality of reducing section on metal pipe is difficult to accurately control, resulting in overall coaxiality deviation when subsequent pipeline is connected, and further causing installation inclination problem; on the other hand, due to deformation concentration, reducing bending area is prone to wrinkle or crack and other defects, not only affecting component quality, but also causing material waste. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a kind of metal pipe reducing forming device of reducing pipe wall wrinkle, with the advantages of guaranteeing the coaxiality of metal pipe during reducing, and supporting and protecting bending of reducing section, etc., solve the coaxiality of metal pipe during reducing cannot be guaranteed, and the problem that reducing bending area is prone to wrinkle or crack.

[0005] The utility model discloses a kind of metal pipe reducing forming device of reducing pipe wall wrinkle, including workbench, controller, reducing assembly, mounting plate, mandrel and drive assembly, the controller, reducing assembly and mounting plate are all fixedly arranged on the top of workbench, the controller is electrically connected with reducing assembly and drive assembly, the mandrel is fixedly arranged on the surface of mounting plate, and mandrel penetrates the inside of reducing assembly, reducing section support assembly and large diameter section support assembly are sequentially arranged on the mandrel, and reducing section support assembly is set correspondingly reducing assembly, the drive assembly is arranged in the inside of mandrel, and reducing section support assembly and large diameter section support assembly are driven by drive assembly;

[0006] The reducing section support assembly includes a placing groove, an inner support plate, and an outer support plate.

[0007] The large diameter section support assembly includes a moving groove and a support body.

[0008] The utility model discloses a kind of metal pipe reducing forming device of reducing pipe wall wrinkle, wherein the side of the moving groove is fixedly provided with a limiting rod, and the surface of the support body is provided with a limiting slot matched with the limiting rod.

[0009] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the inner support board and outer support board are assembled in the placing groove in two layers, and the inner support board is located the inner ring of placing groove, and the outer support board is located the outer ring of placing groove, and the number of inner support board and outer support board is same and is staggered, and the both ends of both sides of each inner support board are fixedly provided with clamping block, and the both ends of both sides of each outer support board are provided with the clamping groove that is matched with clamping block.

[0010] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the inner support board and outer support board are assembled in the placing groove in two layers, and the inner support board is located the inner ring of placing groove, and the outer support board is located the outer ring of placing groove, and the number of inner support board and outer support board is same and is staggered, and the both ends of both sides of each inner support board are fixedly provided with clamping block, and the both ends of both sides of each outer support board are provided with the clamping groove that is matched with clamping block.

[0011] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the drive assembly includes hydraulic pipe and telescopic link, the hydraulic pipe end is provided with the pump body, and the pump body is electrically connected with controller, and the hydraulic pipe is fixedly connected with mounting panel, and the output end of hydraulic pipe penetrates mounting panel and extends to the inner chamber of mandrel, and the telescopic link is fixedly arranged in the inner chamber of mandrel, and the input end and output end of telescopic link are connected with hydraulic pipe and inner support board respectively.

[0012] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the both ends of the inner surface of each inner support board are fixedly provided with telescopic link.

[0013] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the end of hydraulic pipe movably is provided with cover plate, the surface of cover plate is fixedly provided with the push head that corresponds with support body, the inside of cover plate is fixedly provided with push rod, the end of push rod is fixedly provided with push plate, and push plate is combined with the inner wall of hydraulic pipe.

[0014] The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the end of cover plate and support body are fixedly provided with elastic rope, and the number of elastic rope is same with the number of support body.

[0015] Compared with the prior art, the utility model has the advantages of the following:

[0016] 1, the utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the support body contacts the inner wall of the metal pipe large diameter section, can limit the position of the metal pipe, makes the metal pipe coaxial with the mandrel and the reducing assembly.

[0017] 2, the utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, wherein the outer support board and the inner support board are sequentially combined, form a smooth and complete cylindrical surface on the outside, can guarantee the flatness of the inner wall of the metal pipe after reducing, and no fold appears.

[0018] 3. The end of the support body is an arc surface and is attached to the support plate, which can support and protect the bending part of the reduced diameter section and avoid wrinkles or cracks. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are intended to provide further understanding of the present application, form a part of the present application, and the illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model core shaft external structure;

[0022] Figure 3 It is a structural schematic diagram of the utility model driving assembly structure;

[0023] Figure 4 It is a structural schematic diagram of the utility model hydraulic pipe section structure;

[0024] Figure 5 It is a structural schematic diagram of the utility model reduced diameter section support assembly structure;

[0025] Figure 6 It is a structural schematic diagram of the utility model large diameter section support assembly structure;

[0026] Figure 7 It is a structural schematic diagram of the utility model support body and limiting groove structure.

[0027] In the drawing: 1, workbench; 2, controller; 3, reduced diameter assembly; 4, mounting plate; 5, core shaft; 6, driving assembly; 601, hydraulic pipe; 602, telescopic rod; 603, cover plate; 604, push head; 605, elastic rope; 606, push rod; 7, large diameter section support assembly; 701, moving groove; 702, support body; 703, limiting rod; 704, limiting groove; 8, reduced diameter section support assembly; 801, placing groove; 802, inner support plate; 803, outer support plate; 804, elastic rope; 805, clamping block; 806, clamping groove. DETAILED DESCRIPTION

[0028] In the following, a plurality of embodiments of the present application will be disclosed by means of drawings. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.

[0029] Please refer toFigures 1-7 The utility model discloses a metal pipe reducing forming device of reducing pipe wall fold, including work table 1, controller 2, reducing assembly 3, mounting plate 4, mandrel 5 and drive assembly 6, controller 2, reducing assembly 3 and mounting plate 4 all are fixed in the top of work table 1, controller 2 is electrically connected with reducing assembly 3 and drive assembly 6, mandrel 5 is fixed in the surface of mounting plate 4, and mandrel 5 penetrates the inside of reducing assembly 3, and mandrel 5 is equipped with reducing section support assembly 8 and large diameter section support assembly 7 in proper order, and reducing section support assembly 8 sets up corresponding reducing assembly 3, drive assembly 6 is located in the inside of mandrel 5, and reducing section support assembly 8 and large diameter section support assembly 7 are driven through drive assembly 6;

[0030] Reducing section support assembly 8 includes placing groove 801, inner support plate 802 and outer support plate 803, and placing groove 801 is opened in the surface of mandrel 5, and inner support plate 802 and outer support plate 803 are movably assembled in the inner chamber of placing groove 801;

[0031] Large diameter section support assembly 7 includes moving groove 701 and support body 702, and moving groove 701 is annularly opened in the inner chamber of mandrel 5, and support body 702 is movably assembled in the inner chamber of moving groove 701.

[0032] Mounting plate 4 is used for fixing mandrel 5, drive assembly 6 is arranged in mandrel 5, mandrel 5 is divided into large diameter support section and reducing support section, and large diameter support section is provided with support body 702, and support body 702 is located in the inner side of the outer surface of mandrel 5 in ordinary times, and support body 702 is pushed open by injecting hydraulic oil in drive assembly 6, and support body 702 is used for supporting the non-reducing part of metal pipe, and the injection of hydraulic oil simultaneously drives inner support plate 802 and outer support plate 803 to move outward and supports the reducing section.

[0033] Initially, inner support plate 802, outer support plate 803 and support body 702 are all in initial state, as shown in Figure 5 As shown in Figure 6 The metal pipe is sleeved on mandrel 5 and is moved to reducing assembly 3, then support body 702 is pushed out and contacts the inner wall of metal pipe by drive assembly 6, the position of metal pipe is limited, metal pipe is coaxial with mandrel 5 and reducing assembly 3, on the other hand, drive assembly 6 moves inner support plate 802 and outer support plate 803 outward to form the inner support structure of reducing section, then reducing assembly 3 is controlled to work by controller 2, and the reducing work of metal pipe is completed by the cooperation of reducing assembly 3, inner support plate 802 and outer support plate 803.

[0034] The end of the support body 702 is arc-shaped and can be attached to the inner wall of the metal pipe. After the support body 702 moves outward, the diameter of the arc-shaped surface is the same as the inner diameter of the metal pipe. The outer diameters of the inner support plate 802 and the outer support plate 803 after moving outward are the same as the inner diameter of the metal pipe at the reduced diameter. The outer diameter of the mandrel 5 is smaller than the inner diameter of the metal pipe at the reduced diameter, so that the metal pipe can be removed after being reduced in diameter.

[0035] The end surface of the support body 702 in contact with the inner support plate 802 and the outer support plate 803 can be chamfered, so that the metal pipe inner wall is not subjected to a large stress during the reduction in diameter, and wrinkles or cracks are avoided during the reduction in diameter, ensuring smooth transition at the diameter change of the metal pipe.

[0036] A limiting rod 703 is fixed on one side of the moving groove 701, and a limiting groove 704 is formed on the surface of the support body 702 and matched with the limiting rod 703.

[0037] The limiting rod 703 is integrally formed on the side of the moving groove 701 and corresponds to the limiting groove 704, which is used to assist in limiting the support body 702.

[0038] The inner support plate 802 and the outer support plate 803 are movably assembled in two layers in the placing groove 801. The inner support plate 802 is located in the inner circle of the placing groove 801, and the outer support plate 803 is located in the outer circle of the placing groove 801. The number of the inner support plate 802 and the outer support plate 803 is the same and they are arranged alternately. The two ends of each inner support plate 802 on both sides are fixed with a clamping block 805, and the two ends of each outer support plate 803 on both sides are provided with a clamping groove 806 matched with the clamping block 805.

[0039] When the inner support plate 802 moves outward, the outer support plate 803 is pushed outward. Finally, the clamping block 805 is clamped in the clamping groove 806, and the outer support plate 803 and the inner support plate 802 are sequentially attached to form a smooth and complete cylindrical surface on the outer side, which can ensure the flatness of the inner wall of the metal pipe after being reduced in diameter and prevent wrinkles.

[0040] The elastic rope 804 is fixed between the inner support plate 802 and the outer support plate 803, and the two ends of the elastic rope 804 are fixedly connected with the bottom of the outer support plate 803 and the side of the inner support plate 802, respectively.

[0041] When the inner support plate 802 moves inward, the outer support plate 803 is pulled back to the original position by the elastic force of the elastic rope 804. Figure 5 The elastic rope 804 is in a state of no force.

[0042] The driving assembly 6 comprises a hydraulic pipe 601 and a telescopic rod 602, the end of the hydraulic pipe 601 is provided with a pump body, the pump body is electrically connected with the controller 2, the hydraulic pipe 601 is fixedly connected with the mounting plate 4, and the output end of the hydraulic pipe 601 penetrates through the mounting plate 4 and extends to the inner cavity of the mandrel 5, and the telescopic rod 602 is fixedly arranged in the inner cavity of the mandrel 5, and the input end and the output end of the telescopic rod 602 are connected with the hydraulic pipe 601 and the inner support plate 802 respectively.

[0043] The controller 2 is provided with operation buttons and a display screen, the telescopic rod 602 is composed of an outer pipe and a connecting rod, the outer pipe is an input end and is communicated with the hydraulic pipe 601, and the connecting rod is an output end, when hydraulic oil is injected, the pump body is controlled to operate through the operation of the controller 2, the hydraulic oil is injected into the hydraulic pipe 601, the hydraulic oil flows into the outer pipe, the connecting rod is extended by pressure, the inner support plate 802 is driven to move outward, the outer support plate 803 is driven to move outward through the outward movement of the inner support plate 802, the reduced diameter section is supported, when the reduced diameter work is performed, the reduced diameter assembly 3 is controlled to operate through the operation of the controller 2, so that the reduced diameter work is completed, and after the reduced diameter work is completed, the hydraulic oil is extracted through the controller 2, so that the connecting rod moves into the outer pipe.

[0044] The telescopic rod 602 is fixedly arranged at both ends of the inner surface of each inner support plate 802.

[0045] The end of the hydraulic pipe 601 is movably provided with a cover plate 603, the surface of the cover plate 603 is fixedly provided with a push head 604 corresponding to the support body 702, the inside of the cover plate 603 is fixedly provided with a push rod 606, the end of the push rod 606 is fixedly provided with a push plate, and the push plate is attached to the inner wall of the hydraulic pipe 601.

[0046] The support body 702 is pushed open by the push head 604 after the hydraulic oil is injected into the hydraulic pipe 601, the inside of the cover plate 603 is provided with the push rod 606, the push rod 606 is located in the inside of the hydraulic pipe 601, the right end of the push rod 606 is provided with a push plate, the push plate is attached to the inner wall of the hydraulic pipe 601, the push plate is located at the rightmost position and also at the left side of the left telescopic rod 602, so as not to hinder the communication between the telescopic rod 602 and the hydraulic pipe 601, the hydraulic oil drives the push plate to move and further drives the push rod 606 to move, the push rod 606 drives the cover plate 603 to move, and the cover plate 603 drives the push head 604 to move, so as to push open the support body 702.

[0047] The end of the cover plate 603 and the support body 702 are fixedly provided with elastic ropes 605, and the number of the elastic ropes 605 is the same as that of the support body 702.

[0048] When the hydraulic oil is extracted, the push head 604 is reset, and the support body 702 can be reset through the elastic ropes 605 on the cover plate 603.

[0049] In the use of a metal pipe reducing forming device for reducing pipe wall fold: the metal pipe is sleeved on the mandrel 5 and moved into the reducing assembly 3, then hydraulic oil is injected into the hydraulic pipe 601, on the one hand, the push head 604 is driven to move to push the support body 702 out of contact with the inner wall of the metal pipe, the position of the metal pipe is defined, on the other hand, the telescopic rod 602 is driven to extend, the inner support plate 802 and the outer support plate 803 are moved outward to form an inner support structure for the reducing section, then the reducing assembly 3 is started to perform reducing work, the reducing assembly 3 is operated in cooperation with the inner support plate 802 and the outer support plate 803 to complete the reducing work of the metal pipe, then the hydraulic oil is discharged to reset the support body 702, the inner support plate 802 and the outer support plate 803, and the metal pipe can be taken out.

[0050] The above merely describes the implementation manners of the present application and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A metal pipe reducing forming device for reducing the wall fold of a pipe, comprising a workbench (1), a controller (2), a reducing assembly (3), a mounting plate (4), a mandrel (5) and a driving assembly (6), characterized in that: The controller (2), the reducing assembly (3) and the mounting plate (4) are fixedly arranged on the top of the workbench (1), the controller (2) is electrically connected with the reducing assembly (3) and the driving assembly (6), the mandrel (5) is fixedly arranged on the surface of the mounting plate (4), and the mandrel (5) penetrates the inside of the reducing assembly (3), the mandrel (5) is sequentially provided with the reducing section support assembly (8) and the large-diameter section support assembly (7), and the reducing section support assembly (8) is arranged corresponding to the reducing assembly (3), the driving assembly (6) is arranged in the inside of the mandrel (5), and the reducing section support assembly (8) and the large-diameter section support assembly (7) are driven by the driving assembly (6); The reducing section support assembly (8) comprises a placing groove (801), an inner support plate (802) and an outer support plate (803), the placing groove (801) is arranged on the surface of the mandrel (5), and the inner support plate (802) and the outer support plate (803) are movably assembled in the inner cavity of the placing groove (801). The large-diameter section support assembly (7) comprises a moving groove (701) and a support body (702), the moving groove (701) is annularly arranged in the inner cavity of the mandrel (5), the support body (702) is movably assembled in the inner cavity of the moving groove (701), and the end of the support body (702) is an arc surface.

2. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 1, wherein: A limiting rod (703) is fixedly arranged on one side of the moving groove (701), and a limiting groove (704) matched with the limiting rod (703) is arranged on the surface of the support body (702).

3. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 1, wherein: The inner support plate (802) and the outer support plate (803) are movably assembled in the placing groove (801) in two layers, the inner support plate (802) is located in the inner ring of the placing groove (801), the outer support plate (803) is located in the outer ring of the placing groove (801), the number of the inner support plate (802) and the outer support plate (803) is the same and they are arranged in an interlaced mode, a clamping block (805) is fixedly arranged at both ends of each inner support plate (802), and a clamping groove (806) matched with the clamping block (805) is arranged at both ends of each outer support plate (803).

4. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 3, wherein: A spring rope (804) is fixedly arranged between the inner support plate (802) and the outer support plate (803), and the two ends of the spring rope (804) are fixedly connected with the bottom of the outer support plate (803) and the side of the inner support plate (802) respectively.

5. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 1, wherein: The driving assembly (6) comprises a hydraulic pipe (601) and a telescopic rod (602), the end of the hydraulic pipe (601) is provided with a pump body, the pump body is electrically connected with the controller (2), the hydraulic pipe (601) is fixedly connected with the mounting plate (4), the output end of the hydraulic pipe (601) penetrates the mounting plate (4) and extends into the inner cavity of the mandrel (5), and the telescopic rod (602) is fixedly arranged in the inner cavity of the mandrel (5), and the input end and the output end of the telescopic rod (602) are connected with the hydraulic pipe (601) and the inner support plate (802) respectively.

6. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 5, wherein: Telescopic rods (602) are fixedly arranged at both ends of the inner surface of each inner support plate (802).

7. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 5, wherein: The end of the hydraulic pipe (601) is movably provided with a cover plate (603), the surface of the cover plate (603) is fixedly provided with a push head (604) corresponding to the support body (702), the inside of the cover plate (603) is fixedly provided with a push rod (606), the end of the push rod (606) is fixedly provided with a push plate, and the push plate is attached to the inner wall of the hydraulic pipe (601).

8. The apparatus for reducing wall wrinkling of a metal pipe during a reducing forming process according to claim 7, wherein: The end of the cover plate (603) and the support body (702) are fixedly provided with elastic ropes (605), and the number of the elastic ropes (605) is the same as that of the support body (702).

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