Steel pipe twisting machine

Abstract

The utility model discloses a steel pipe twisting machine which comprises a base, a hydraulic cylinder is fixedly installed on the top of the base, a fixing plate is fixedly installed on one side of the hydraulic cylinder and located on the top of the base, and a twisting assembly used for twisting a bicycle steel pipe is installed at the telescopic end of the hydraulic cylinder. A twisting assembly is installed on the base, a fixing assembly used for positioning a steel pipe for bicycle production is installed on one side of the twisting assembly, a fixing block is fixedly installed at the position, located on the top of the base, of one side of the twisting assembly, and a stamping head is fixedly installed on one side of the fixing block. And then the hydraulic cylinder is started, the telescopic end of the hydraulic cylinder stretches out to drive the fixed steel pipe to move towards one side of the stamping head, so that the steel pipe is subjected to distortion shaping, the situation that the center point deviates due to abrasion of the connecting position of the stamping head and equipment is prevented, and distortion shaping failure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle processing equipment, in particular to a steel pipe twisting machine. Background Art

[0002] Bicycles are a means of transportation that we often use in our daily lives. During the production process of bicycles, multiple steel pipe parts are bent and then welded together to form the frame of the bicycle.

[0003] According to a steel pipe bending device for bicycles with publication number CN217700827U, the utility model relates to the technical field of bicycle production and discloses a steel pipe bending device for bicycles, including a workbench, a processing seat is arranged above the workbench, and the processing seat is fixed to the surface of the workbench through a connecting seat; two steel pipe fixing devices are arranged on the top of the workbench, and a stamping assembly is arranged on the top of the steel pipe fixing device; the utility model has a simple structure and high working efficiency, and the steel pipe to be processed can be fixed by the two steel pipe fixing devices, and then the steel pipe is stamped and bent by the stamping assembly to obtain the required bent pipe, and the operation is simple and fast, the stamping head is detachably connected and can be replaced, and the stamping head can be adjusted according to different bending angle requirements, and the processing range is significantly improved.

[0004] There are still some problems in the use of the above device. The punching head of the punching assembly is connected to the second adapter frame. When used for a long time, wear will inevitably occur between the punching head and the second connecting frame, which will cause the centerline point of the punching head to shift, and it cannot be ensured that the processed steel pipe meets the requirements. Utility Model Content

[0005] The utility model aims to provide a steel pipe twisting machine to solve the problem of wear between the punch head and the second connecting frame proposed in the above background technology, thereby affecting the twisting accuracy of the steel pipe.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A steel pipe twisting machine comprises a base, a hydraulic cylinder is fixedly mounted on the top of the base, a fixing plate is fixedly mounted on one side of the hydraulic cylinder and located on the top of the base, a twisting assembly for twisting steel pipes for bicycle production is mounted on the telescopic end of the hydraulic cylinder, a fixing assembly for positioning steel pipes for bicycle production is mounted on one side of the twisting assembly, a fixing seat is fixedly mounted on one side of the twisting assembly and located on the top of the base, and a punch head is fixedly mounted on one side of the fixing seat.

[0008] Preferably, the twisting assembly includes a fixed shell fixedly connected to the telescopic end of the hydraulic cylinder, a fixed shaft is connected through the surface of the fixed shell, and a rotating block is rotatably sleeved on the surface of the fixed shaft in the inner cavity of the fixed shell.

[0009] Preferably, the fixing assembly includes fixing blocks fixedly installed on both sides of the fixing shell, a through hole is opened on the surface of the fixing shell, a hand-tightening bolt is rotatably connected to the surface of the fixing block, a connecting block is threadedly connected to the surface of the hand-tightening bolt, and two groups of connecting plates are provided on the surface of the connecting block, and the two groups of connecting plates respectively penetrate the inner cavity of the corresponding side fixing blocks and the through hole in sequence, a fixing pin is fixedly installed between the two groups of connecting plates, and a roller is rotatably sleeved on the surface of the fixing pin.

[0010] Preferably, a plug-in plate is fixedly mounted on one side of the punch head, the plug-in plate is plugged into an inner cavity of a plug-in slot provided on the surface of the fixing seat, and the plug-in plate is fixedly mounted to the fixing seat via a second bolt.

[0011] Preferably, an arc groove is provided on the surface of the rotating block.

[0012] Preferably, a guide block is fixedly mounted on the bottom of the fixed shell, and the guide block is slidably connected to an inner cavity of a guide groove opened on the surface of the fixed block.

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

[0014] 1. The utility model first fixes the steel pipe on the twisting assembly through the setting of the twisting assembly, and then starts the hydraulic cylinder. The telescopic end of the hydraulic cylinder extends to drive the fixed steel pipe to move to the side of the punching head, thereby twisting and shaping the steel pipe, thereby preventing the center point from being offset due to wear at the connection between the punching head and the equipment, thereby avoiding twisting and shaping failure.

[0015] 2. The utility model provides a rotating block to support the deformed portion of the steel pipe when the steel pipe is twisted and shaped, thereby preventing the steel pipe from deforming and causing twisting failure.

[0016] 3. The utility model provides an arc groove on the surface of the rotating block, and places the steel pipe in the inner cavity of the arc groove, thereby further restricting the position of the steel pipe and preventing the steel pipe from deviating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the steel pipe twisting machine of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a fixed block in a steel pipe twisting machine of the utility model;

[0019] Figure 3This is a schematic diagram of the structure of the fixed shell in the steel pipe twisting machine of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the structure of the roller in the steel pipe twisting machine.

[0021] In the figure: 100, base; 101, hydraulic cylinder; 102, fixed plate; 103, guide block; 104, guide groove; 200, fixed shell; 201, roller; 202, fixed shaft; 203, rotating block; 204, through hole; 205, hand-tightening bolt; 206, connecting plate; 207, fixed block; 208, fixing pin; 209, connecting block; 210, arc groove; 300, second bolt; 301, fixed seat; 302, plug-in groove; 303, plug-in plate; 304, punch head. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a steel pipe twisting machine includes a base 100, a hydraulic cylinder 101 is fixedly installed on the top of the base 100, a fixing plate 102 is fixedly installed on one side of the hydraulic cylinder 101 and located on the top of the base 100, a twisting component for twisting steel pipes for bicycle production is installed on the telescopic end of the hydraulic cylinder 101, a fixing component for positioning steel pipes for bicycle production is installed on one side of the twisting component, a fixing seat 301 is fixedly installed on one side of the twisting component and located on the top of the base 100, and a punching head 304 is fixedly installed on one side of the fixing seat 301. Through the setting of the twisting component, the steel pipe is first fixed on the twisting component, and then the hydraulic cylinder 101 is started, and the telescopic end of the hydraulic cylinder 101 extends out, driving the fixed steel pipe to move to the side of the punching head 304, thereby twisting and shaping the steel pipe, thereby preventing the punching head 304 from wearing at the connection between the equipment, causing the center point to shift, and thus causing the twisting and shaping failure.

[0024] Preferably, the twisting assembly includes a fixed shell 200 fixedly connected to the telescopic end of the hydraulic cylinder 101, and a fixed shaft 202 is connected through the surface of the fixed shell 200. A rotating block 203 is rotatably sleeved on the surface of the fixed shaft 202 in the inner cavity of the fixed shell 200. Through the setting of the rotating block 203, when the steel pipe is twisted and shaped, the deformation part of the steel pipe is supported to prevent the deformation of the steel pipe and the failure of the twisting and shaping.

[0025] Furthermore, the fixing assembly includes fixing blocks 207 fixedly installed on both sides of the fixing shell 200, a through hole 204 is opened on the surface of the fixing shell 200, a hand-tightening bolt 205 is rotatably connected to the surface of the fixing block 207, a connecting block 209 is threadedly connected to the surface of the hand-tightening bolt 205, and two groups of connecting plates 206 are arranged on the surface of the connecting block 209, and the two groups of connecting plates 206 respectively penetrate the inner cavity of the corresponding side fixing block 207 and the through hole 204 in sequence, a fixing pin 208 is fixedly installed between the two groups of connecting plates 206, and a roller 201 is rotatably sleeved on the surface of the fixing pin 208. Through the setting of the fixing assembly, it can be adjusted according to the diameter of the steel pipe and fixed to improve the applicability of the device.

[0026] Furthermore, a plug-in plate 303 is fixedly installed on one side of the punch head 304, and the plug-in plate 303 is plugged into the inner cavity of the plug-in slot 302 opened on the surface of the fixing seat 301. The plug-in plate 303 is fixedly installed together with the fixing seat 301 by the second bolt 300. Through the setting of the second bolt 300, the restriction on the plug-in block can be released by removing the second bolt 300, so that the equipment can replace the punch head 304 according to the diameter of the steel pipe, thereby improving the diversity of the device.

[0027] It is worth mentioning that an arc groove 210 is provided on the surface of the rotating block 203, and the rotating block 203 is formed by a combination of one or two materials such as rubber and polyurethane. Through the setting of the arc groove 210, the steel pipe is placed in the inner cavity of the arc groove 210, and the position of the steel pipe is further restricted to prevent the steel pipe from deviating.

[0028] Preferably, a guide block 103 is fixedly installed at the bottom of the fixed shell 200, and the guide block 103 is slidably connected to the inner cavity of the guide groove 104 opened on the surface of the fixed block 207. By setting the guide block 103 to be slidably connected to the inner cavity of the sliding groove, the movement trajectory of the fixed shell 200 is limited to prevent the movement trajectory of the fixed shell 200 from being offset, thereby affecting the twisting effect on the steel pipe, and further improving the stability of the device.

[0029] Working principle:

[0030] The steel pipe used in the production of the bicycle is taken out, and the fixing components at both ends of the fixing shell 200 are passed through in sequence. Then the staff tightens the hand-tightening bolt 205, thereby driving the connecting block to move outward, so that the roller 201 is close to the surface of the steel pipe to fix the steel pipe. Then the hydraulic cylinder 101 is started, and the telescopic end of the hydraulic cylinder 101 extends to drive the fixed steel pipe to move to the side of the punch head 304, thereby twisting and shaping the steel pipe. While the steel pipe is twisting and shaping, the two groups of rotating blocks 203 rotate inward at the same time, thereby offsetting the stress caused by the shaping of the steel pipe and preventing the steel pipe from being deformed. When the twisting and shaping of the steel pipe is completed, the hand-tightening bolt 205 is loosened to separate the roller 201 from the surface of the steel pipe, and then the steel pipe can be taken out.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel pipe twisting machine, characterized in that: The invention comprises a base (100), a hydraulic cylinder (101) is fixedly mounted on the top of the base (100), a fixing plate (102) is fixedly mounted on one side of the hydraulic cylinder (101) and located on the top of the base (100), a twisting assembly for twisting a steel pipe for bicycle production is mounted on the telescopic end of the hydraulic cylinder (101), a fixing assembly for positioning the steel pipe for bicycle production is mounted on one side of the twisting assembly, a fixing seat (301) is fixedly mounted on one side of the twisting assembly and located on the top of the base (100), and a punching head (304) is fixedly mounted on one side of the fixing seat (301).

2. A steel pipe twisting machine according to claim 1, characterized in that; The twisting assembly comprises a fixed shell (200) fixedly connected to the telescopic end of the hydraulic cylinder (101), a fixed shaft (202) penetrating the surface of the fixed shell (200), and a rotating block (203) rotatably sleeved on the surface of the fixed shaft (202) in the inner cavity of the fixed shell (200).

3. A steel pipe twisting machine according to claim 1, characterized in that: The fixing assembly comprises fixing blocks (207) fixedly mounted on both sides of the fixing shell (200); a through hole (204) is provided on the surface of the fixing shell (200); a hand-tightening bolt (205) is rotatably connected to the surface of the fixing block (207); a connecting block (209) is threadedly connected to the surface of the hand-tightening bolt (205); two groups of connecting plates (206) are arranged on the surface of the connecting block (209); the two groups of connecting plates (206) respectively penetrate the inner cavity of the corresponding side fixing block (207) and the through hole (204) in sequence; a fixing pin (208) is fixedly mounted between the two groups of connecting plates (206); and a roller (201) is rotatably sleeved on the surface of the fixing pin (208).

4. A steel pipe twisting machine according to claim 1, characterized in that: A plug-in plate (303) is fixedly mounted on one side of the punch head (304); the plug-in plate (303) is plugged into an inner cavity of a plug-in slot (302) provided on the surface of the fixing seat (301); and the plug-in plate (303) is fixedly mounted on the fixing seat (301) via a second bolt (300).

5. A steel pipe twisting machine according to claim 2, characterized in that: An arc-shaped groove (210) is formed on the surface of the rotating block (203).

6. A steel pipe twisting machine according to claim 2, characterized in that: A guide block (103) is fixedly mounted on the bottom of the fixed shell (200), and the guide block (103) is slidably connected to the inner cavity of a guide groove (104) provided on the surface of the fixed block (207).

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