Tube expanding device

Abstract

The present invention relates to the technical field of pipe processing, in particular to pipe processing equipment; the technical problem to be solved by the present invention is to provide an expanding pipe device capable of controlling the expanding force. The expanding pipe device includes a bottom plate, a top pipe, a mandrel, a handle and a rubber sleeve; a cam is provided at the end of the handle; the rubber sleeve is located between the top pipe and the bottom plate; the handle is located above the bottom plate; the mandrel is slidably engaged with the bottom plate, the rubber sleeve and the top pipe, one end of the mandrel is hinged to the cam, and a stop block is provided at the other end of the mandrel; the rubber sleeve and the top pipe are located between the stop block and the bottom plate.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, in particular to pipe processing equipment. Background Art

[0002] In the existing pipe expanding device, a plug is inserted into the pipe, and the plug is linearly pushed to expand the pipe by mechanical hard extrusion. For thin-walled pipes, using a plug to expand the pipe cannot conveniently control the expanding force, and thus cannot control the deformation amount of the pipe, and it is easy to burst the pipe. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a pipe expanding device capable of controlling the expanding force.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a pipe expanding device, including a bottom plate, a pipe pusher, a mandrel, a handle and a rubber sleeve;

[0005] A cam is provided at the end of the handle;

[0006] The rubber sleeve is located between the pipe pusher and the bottom plate;

[0007] The handle is located above the bottom plate;

[0008] The mandrel is slidably matched with the bottom plate, the rubber sleeve and the pipe pusher. One end of the mandrel is hinged to the cam, and a stop block is provided at the other end of the mandrel;

[0009] The rubber sleeve and the pipe pusher are located between the stop block and the bottom plate.

[0010] Furthermore, it further includes a wear-resistant plate, and the wear-resistant plate is arranged between the cam and the bottom plate.

[0011] Furthermore, it further includes a support pipe. The support pipe is connected to the bottom plate and communicated with the bottom plate. The support pipe is located between the rubber sleeve and the bottom plate, and the mandrel is slidably matched with the support pipe.

[0012] Furthermore, the support pipe is detachably connected to the bottom plate.

[0013] Furthermore, connection holes are provided on the bottom plate.

[0014] Furthermore, anti-slip threads are provided on the handle.

[0015] Furthermore, the stop block is detachably connected to the mandrel.

[0016] Furthermore, the stop block is a nut, and the nut is threadedly connected to the mandrel.

[0017] The beneficial effect of the present invention is: compared with the existing pipe expanding device, the present pipe expanding device includes a bottom plate, a pipe pusher, a mandrel, a handle and a rubber sleeve;

[0018] The end of the handle is provided with a cam;

[0019] The rubber sleeve is located between the top pipe and the bottom plate;

[0020] The handle is located above the bottom plate;

[0021] The mandrel is slidably fitted with the bottom plate, the rubber sleeve and the top pipe. One end of the mandrel is hinged to the cam, and a stop block is provided at the other end of the mandrel;

[0022] The rubber sleeve and the top pipe are located between the stop block and the bottom plate.

[0023] When the present invention is used, the rubber sleeve is inserted into the pipe, the handle is rotated, and the mandrel pulls the stop block to move through the lever principle, so that the rubber sleeve is squeezed and deformed. The rubber sleeve deforms along the radial direction of the mandrel and pushes the pipe wall to deform. When the cam rotates to different positions, the deformation amount of the rubber sleeve is different. The profile of the cam can be used to control the force of tube expansion, and thus control the deformation amount of tube expansion. And before the tube expansion starts, the rubber sleeve is in a contracted state, which can enter the pipe more conveniently, and the pipe can also be expanded at different positions without continuously expanding the pipe. Description of the Drawings

[0024] Figure 1 is the front view of the structure of the present invention;

[0025] Figure 2 is the top view of the structure of the present invention;

[0026] Figure 3 is the cross-sectional view of the structure of the present invention when the rubber sleeve is in a compressed state;

[0027] Figure 4 is the cross-sectional view of the structure of the present invention when the rubber sleeve is in a stretched state;

[0028] Parts, positions and numbers in the figure: bottom plate 1, support pipe 2, rubber sleeve 3, top pipe 4, stop block 5, mandrel 6, wear-resistant plate 7, handle 8, cam 801. Detailed Embodiment

[0029] The present invention will be further described below with reference to the drawings.

[0030] As Figures 1 to 4 shown, the tube expanding device includes a bottom plate 1, a top pipe 4, a mandrel 6, a handle 8 and a rubber sleeve 3;

[0031] The end of the handle 8 is provided with a cam 801, and the profile of the cam 801 can be selected according to the requirements of the tube expansion deformation amount and the tube expansion force;

[0032] The rubber sleeve 3 is located between the top pipe 4 and the bottom plate 1;

[0033] The handle 8 is located above the bottom plate 1;

[0034] The mandrel 6 is in sliding fit with the bottom plate 1, the rubber sleeve 3 and the top pipe 4. One end of the mandrel 6 is hinged to the cam 801, and a stop block 5 is provided at the other end of the mandrel 6. The stop block can be parts such as a square block, a nut, a baffle plate, etc., and its function is to push the top pipe 4 to move.

[0035] The rubber sleeve 3 and the top pipe 4 are located between the stop block 5 and the bottom plate 1.

[0036] In order to avoid abrasion of the bottom plate 1 when the cam 801 rotates, a wear-resistant plate 7 is further included. The wear-resistant plate 7 is arranged between the cam 801 and the bottom plate 1. The wear-resistant plate is made of wear-resistant materials such as rubber and plastic.

[0037] In order to save the stroke of the mandrel 6, the present invention further includes a support pipe 2. The support pipe 2 is connected to the bottom plate 1 and communicates with the bottom plate 1. The support pipe 2 is located between the rubber sleeve 3 and the bottom plate 1. The mandrel 6 is in sliding fit with the support pipe 2. The longer the support pipe 2 is, the shorter the stroke of the mandrel required for the rubber sleeve 3 to reach the same deformation amount is, and at the same time, the material of the rubber sleeve 3 is also saved.

[0038] In order to facilitate the disassembly and assembly of the support pipe 2, the support pipe 2 and the bottom plate 1 are connected by a detachable method such as bolt connection, threaded connection or snap connection.

[0039] In order to facilitate the fixing of the device on the operating table, connection holes are provided on the bottom plate 1. Bolts can be used to pass through the connection holes to fix the whole device in a certain place.

[0040] In order to avoid slipping during manual operation, anti-slip threads are provided on the handle 8.

[0041] In order to facilitate the disassembly and assembly of the stop block 5, the stop block 5 and the mandrel 6 are detachably connected by means such as threaded connection, snap connection or pin connection.

[0042] In order to make the structure of the present invention simple, easy to maintain, disassemble and assemble, the stop block 5 is a nut, and the nut is threadedly connected to the mandrel 6.

Claims

1. Expansion tube device, characterized in that: It includes a bottom plate (1), a top pipe (4), a mandrel (6), a handle (8) and a rubber sleeve (3); A cam (801) is provided at the end of the handle (8); The rubber sleeve (3) is located between the top pipe (4) and the bottom plate (1); The handle (8) is located above the bottom plate (1); The mandrel (6) is slidably engaged with the bottom plate (1), the rubber sleeve (3) and the top pipe (4). One end of the mandrel (6) is hinged to the cam (801), and a stop block (5) is provided at the other end of the mandrel (6); The rubber sleeve (3) and the top pipe (4) are located between the stop block (5) and the bottom plate (1); When the handle (8) rotates, the mandrel (6) can pull the stop block (5) to act, squeezing the rubber sleeve (3) to deform and thus pushing the pipe wall to deform.

2. The tube expanding device according to claim 1, characterized in that: It further includes a wear-resistant plate (7), and the wear-resistant plate (7) is arranged between the cam (801) and the bottom plate (1).

3. The expanding tube device according to claim 1, wherein: It further includes a support pipe (2), and the support pipe (2) is connected to the bottom plate (1) and communicates with the bottom plate (1). The support pipe (2) is located between the rubber sleeve (3) and the bottom plate (1), and the mandrel (6) is slidably engaged with the support pipe (2).

4. The tube expanding device according to claim 3, characterized in that: The support pipe (2) is detachably connected to the bottom plate (1).

5. The tube expanding device according to any one of claims 1 to 4, characterized in that: Connection holes are provided on the bottom plate (1).

6. The expanding tube device according to claim 4, wherein: Anti-slip threads are provided on the handle (8).

7. The tube expanding device according to claim 4, characterized in that: The stop block (5) is detachably connected to the mandrel (6).

8. The tube expanding device according to claim 7, characterized in that: The stop block (5) is a nut, and the nut is threadedly connected to the mandrel (6).

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