Positioning structure of metal pipe bending machine

By setting active and passive clamping components on the metal tube bending machine, combined with an electric telescopic cylinder and bidirectional screw adjustment, stable clamping of both ends of the tube is achieved, solving the problems of insufficient clamping force and damage in the existing technology, and improving bending stability and practicality.

CN224574534UActive Publication Date: 2026-07-31HANGZHOU ZHENGJIAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU ZHENGJIAN TECH CO LTD
Filing Date
2025-09-05
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing metal tube bending machines often have insufficient clamping force at the other end of the tube during the bending process, resulting in poor clamping effect and easy damage to the outer wall of the tube.

Method used

The system employs an active and passive clamping pipe structure, utilizing an electric telescopic cylinder and a two-way screw to adjust the active and passive extrusion rollers. Combined with a beaded clamping plate and a bead-holding plate, it achieves stable clamping of both ends of the pipe body, reducing damage to the pipe surface.

Benefits of technology

This improves the stability of the tube during bending, reduces damage to the tube surface, and increases the practicality and stability of the device.

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Abstract

This metal pipe bending machine positioning structure relates to the technical field of pipe bending equipment, and particularly to a metal pipe bending machine positioning structure, including a worktable. A bending mechanism is set in the middle section of the upper surface of the worktable for bending the pipe body. It also includes an active pipe clamping component located at one end of the upper surface of the worktable, which consists of a bottom frame and an upper frame. Both the bottom frame and the upper frame are detachably connected to beaded clamping plates, forming a clamping pipe between the bottom frame and the upper frame for clamping one end of the pipe body. A driven pipe clamping component is located at the other end of the upper surface of the worktable for clamping the other end of the pipe body. By setting the active and driven pipe clamping components at both ends of the bending mechanism, the pipe body to be bent can be clamped at the end, thereby improving the stability of the pipe body during bending. The beaded clamping plates and clamping bead plates can clamp the pipe body while greatly reducing damage to the pipe body surface.
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Description

Technical Field

[0001] This metal pipe bending machine positioning structure relates to the field of pipe bending equipment technology, and in particular to a metal pipe bending machine positioning structure. Background Technology

[0002] Chinese patent CN120515860A discloses a positioning structure patent for a metal tube bending machine. It includes a worktable, a fixing mechanism on one side of the top surface of the worktable, and a bending mechanism on the other side of the top surface. The fixing mechanism includes a fixed clamp and a movable clamp, with the fixed clamp fixedly connected to the top surface of the worktable. This invention places one end of a metal tube between the fixed clamp and the movable clamp. A threaded rod drives a screw plate to move downwards on the surface of the threaded rod, and the screw plate drives the movable clamp to move downwards. The movable clamp and the fixed clamp fix one end of the metal tube. During fixing, the arc plate is compressed, causing the pressure plate to move. The pressure plate compresses the elastic element and causes the inclined rod to move. The other end of the inclined rod causes the side clamp to press against the surface of the metal tube for secondary positioning. The movable clamp and the fixed clamp have identical internal structures, achieving simultaneous clamping of the metal tube from all sides, facilitating the subsequent bending process and improving operational stability.

[0003] While the above equipment can effectively bend pipes, it has the following problems: Although the above devices can clamp one end of the tube simultaneously from top to bottom and left to right, when bending the tube, even if one end of the device is fixed, the clamping force of the other end is weak. The multi-point clamping effect of this type of device is poor, and it is easy to cause damage to the outer wall of the tube when clamping it. Utility Model Content

[0004] To solve the above problems, this metal tube bending machine positioning structure provides a metal tube bending machine positioning structure.

[0005] The above-mentioned technical objective of the positioning structure of this metal tube bending machine is achieved through the following technical solution: A positioning structure for a metal tube bending machine includes a worktable, a bending mechanism is provided in the middle section of the upper surface of the worktable for bending the tube body, and an active tube clamping component is located at one end of the upper surface of the worktable. The active clamping component consists of a bottom frame and an upper frame. A beaded clamping plate is detachably connected inside the bottom frame and the upper frame. A clamping pipe is formed between the bottom frame and the upper frame for clamping one end of the tube body. The driven clamp is located at the other end of the upper surface of the worktable to clamp the other end of the tube.

[0006] Furthermore, the bending mechanism includes a support plate, which is fixedly installed on the upper surface of the workbench. An electric telescopic cylinder is fixedly installed on one side of the upper surface of the support plate via a mounting plate, and an active extrusion wheel is fixedly installed at one end of the electric telescopic cylinder.

[0007] By adopting the above technical solution, the active extrusion wheel can be moved by an electric telescopic cylinder.

[0008] Furthermore, a driven frame with a driven extrusion wheel is symmetrically slidably mounted on the other side surface of the support plate. A T-shaped block is symmetrically fixedly mounted on the lower end of the driven frame. A T-shaped groove is opened in the support plate. The T-shaped block and the T-shaped groove are slidably engaged with each other. A first bidirectional lead screw is rotatably mounted in the T-shaped groove. The first bidirectional lead screw is slidably connected to the T-shaped block.

[0009] By adopting the above technical solution, it is possible to limit the movement of the driven frame.

[0010] Furthermore, the bottom frame and the workbench are fixedly connected to each other. Multiple insertion holes are provided on one side of both the bottom frame and the upper frame. Multiple screws are fixedly installed on one end of the beaded clamping plate. One end of the screw is inserted into the insertion hole, and a nut is fixedly installed on one end of the screw.

[0011] By adopting the above technical solution, the beaded clamp can be fixed.

[0012] Furthermore, a guide rod is fixedly installed at one end of the bottom frame, a drive motor is embedded at one end of the bottom frame, and a lifting screw is fixedly installed at one end of the drive motor, the lifting screw passing through the upper frame.

[0013] By adopting the above technical solution, the lifting screw can be rotated by the drive motor.

[0014] Furthermore, the driven clamping pipe fitting includes a support frame, in which a clamping bead plate is symmetrically and slidably installed via a stabilizing rod, and a second bidirectional lead screw is screwed to the top of the clamping bead plate.

[0015] By adopting the above technical solution, the tube body can be clamped by two clamping plates.

[0016] In summary, the positioning structure of this metal tube bending machine has the following beneficial effects: 1. In this application, by providing active and passive clamping components at both ends of the bending mechanism, the pipe body to be bent can be clamped at the end, thereby improving the stability of the pipe body during bending. 2. In this application, by setting the beaded clamping plate and the bead holding plate, the tube body can be clamped while greatly reducing the damage to the tube body surface. It also makes it easy to disassemble the beaded clamping plate, increasing the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the active pipe clamping component of this utility model; Figure 3 This is a schematic diagram of the bending mechanism of this utility model; Figure 4 This is a schematic diagram showing the position of the drive motor of this utility model; Figure 5 This is a schematic diagram of the driven pipe clamp of this utility model; Figure 6 Figure 1 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Workbench; 2. Bending mechanism; 201. Support plate; 202. Electric telescopic cylinder; 203. Active extrusion wheel; 204. Driven extrusion wheel; 205. Driven frame; 206. T-block; 207. T-slot; 208. First bidirectional lead screw; 3. Active pipe clamping fitting; 301. Bottom frame; 302. Upper frame; 303. Beaded clamping plate; 304. Pipe clamping; 305. Insertion hole; 306. Screw; 307. Nut; 308. Guide rod; 309. Drive motor; 310. Lifting lead screw; 4. Driven pipe clamping fitting; 401. Support frame; 402. Stabilizing rod; 403. Beaded clamping plate; 404. Second bidirectional lead screw. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] like Figure 1-6 As shown in the figure, this application discloses a positioning structure for a metal tube bending machine, including a worktable 1, a bending mechanism 2 disposed in the middle section of the upper surface of the worktable 1 for bending the tube body, and further including: The active clamping pipe component 3 is located at one end of the upper surface of the workbench 1. It consists of a bottom frame 301 and an upper frame 302. Both the bottom frame 301 and the upper frame 302 are detachably connected to beaded clamping plates 303. A clamping pipe 304 is formed between the bottom frame 301 and the upper frame 302 for clamping one end of the pipe. Driven clamp 4 is located at the other end of the upper surface of the workbench 1 to clamp the other end of the tube.

[0021] The bending mechanism 2 includes a support plate 201, which is fixedly installed on the upper surface of the workbench 1. An electric telescopic cylinder 202 is fixedly installed on one side of the upper surface of the support plate 201 via a mounting plate. An active extrusion wheel 203 is fixedly installed at one end of the electric telescopic cylinder 202. A driven frame 205 with a driven extrusion wheel 204 is symmetrically slidably installed on the other side surface of the support plate 201. T-shaped blocks 206 are symmetrically fixedly installed at the lower end of the driven frame 205. A T-shaped groove 207 is formed inside the support plate 201, and the T-shaped blocks 206... The T-slots 207 slide and engage with each other. A first bidirectional lead screw 208 is rotatably installed inside the T-slots 207. The first bidirectional lead screw 208 is slidably connected to the T-block 206. It should be noted that the electric telescopic cylinder 202, which is flexibly connected by an external power source, can bend the tube (not shown in the figure) by means of the electric telescopic cylinder 202 and the active extrusion wheel 203. By rotating the first bidirectional lead screw 208, the two driven extrusion wheels 204 can move towards each other, thereby adjusting the bending angle.

[0022] The bottom frame 301 is fixedly connected to the worktable 1. Multiple insertion holes 305 are provided on one side of both the bottom frame 301 and the upper frame 302. Multiple screws 306 are fixedly installed on one end of the beaded clamping plate 303. One end of the screw 306 is inserted into the insertion hole 305. A nut 307 is fixedly installed on one end of the screw 306. A guide rod 308 is fixedly installed on one end of the bottom frame 301. A drive motor 309 is embedded in one end of the bottom frame 301. A lifting screw 310 is fixedly installed on one end of the drive motor 309. The lifting screw 310 passes through the upper frame 302. It should be noted that a rubber pad (not labeled in the figure) is provided between the beaded clamping plate 303 and the bottom frame 301 and the upper frame 302. The screws 306 are inserted into the insertion holes 305 and fixed and limited by the nuts 307, thereby achieving the fixation of the beaded clamping plate 303.

[0023] The driven clamping fitting 4 includes a support frame 401. A clamping bead plate 403 is symmetrically slidably installed inside the support frame 401 via a stabilizing rod 402. A second bidirectional screw 404 is screwed to the top of the clamping bead plate 403. It should be noted that by rotating the second bidirectional screw 404, the other end of the pipe can be stably clamped by the clamping bead plate 403. After adjustment, the second bidirectional screw 404 and the first bidirectional screw 208 can be fixed by a pin to prevent them from flipping. Since this is a common manual fixing method, its details are not described in this device.

[0024] The working principle of the positioning structure of the metal tube bending machine in this embodiment is as follows: First, start the drive motor 309 of the active clamping pipe 3. The drive motor 309 drives the lifting screw 310 to rotate, so that the upper frame 302 moves upward along the guide rod 308, expanding the clamping pipe 304 distance between the bottom frame 301 and the upper frame 302. Place one end of the metal tube to be bent into the inner side of the beaded clamping plate 303 in the bottom frame 301. Then, start the drive motor 309 in the opposite direction to lower the upper frame 302 until the upper frame 302 and the beaded clamping plate 303 in the bottom frame 301 together wrap the tube body, and the balls of the beaded clamping plate 303 are in contact with the surface of the tube body. At this time, stop the drive motor 309. The beaded clamping plate 303 forms a flexible clamping of the tube body through the balls, which not only avoids damage to the surface of the tube body, but also restricts the radial displacement of the tube body.

[0025] Then adjust the driven clamping component 4: rotate the handwheel of the second bidirectional lead screw 404 to drive the two clamping ball plates 403 to move along the stabilizing rod 402 toward the tube body until the inner ball of the clamping ball plate 403 is in contact with the surface of the other end of the tube body, thus completing the clamping of the other end of the tube body; through the coordinated clamping of the active clamping component 3 and the driven clamping component 4, it is ensured that the tube body remains horizontal and without loosening on the surface of the workbench 1, providing a stable foundation for subsequent bending.

[0026] The above description is merely a preferred embodiment of the positioning structure of this metal tube bending machine. The protection scope of this positioning structure is not limited to the above embodiments. All technical solutions falling within the conceptual framework of this positioning structure are protected within its scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this positioning structure should also be considered within its protection scope.

Claims

1. A positioning structure of a metal pipe bending machine, comprising a workbench (1), a bending mechanism (2) is arranged in the middle section of the upper surface of the workbench (1) and used for bending a pipe body, characterized in that: It also includes: An active clamping fitting (3) is located at one end of the upper surface of the workbench (1). It consists of a bottom frame (301) and an upper frame (302). Both the bottom frame (301) and the upper frame (302) are detachably connected with beaded clamping plates (303). A clamping pipe (304) is formed between the bottom frame (301) and the upper frame (302) for clamping one end of the pipe. The driven clamping pipe fitting (4) is located at the other end of the upper surface of the worktable (1) for clamping the other end of the pipe body.

2. The metal pipe bending machine positioning structure according to claim 1, characterized by: The bending mechanism (2) includes a support plate (201), which is fixedly installed on the upper surface of the workbench (1). An electric telescopic cylinder (202) is fixedly installed on one side of the upper surface of the support plate (201) through a mounting plate. An active extrusion wheel (203) is fixedly installed at one end of the electric telescopic cylinder (202).

3. The metal pipe bending machine positioning structure according to claim 2, characterized by: A driven frame (205) with a driven extrusion wheel (204) is symmetrically slidably mounted on the other side surface of the support plate (201). A T-shaped block (206) is symmetrically fixedly mounted on the lower end of the driven frame (205). A T-shaped groove (207) is opened in the support plate (201). The T-shaped block (206) and the T-shaped groove (207) are slidably engaged with each other. A first bidirectional lead screw (208) is rotatably mounted in the T-shaped groove (207). The first bidirectional lead screw (208) is slidably connected to the T-shaped block (206).

4. The metal pipe bending machine positioning structure according to claim 3, characterized by: The bottom frame (301) is fixedly connected to the workbench (1). The bottom frame (301) and the upper frame (302) are provided with multiple insertion holes (305) on one side. Multiple screws (306) are fixedly installed on one end of the beaded clamp (303). One end of the screw (306) is inserted into the insertion hole (305). A nut (307) is fixedly installed on one end of the screw (306).

5. The metal pipe bending machine positioning structure according to claim 4, characterized by: A guide rod (308) is fixedly installed at one end of the bottom frame (301), a drive motor (309) is embedded at one end of the bottom frame (301), a lifting screw (310) is fixedly installed at one end of the drive motor (309), and the lifting screw (310) passes through the upper frame (302).

6. The metal pipe bending machine positioning structure according to claim 1, characterized by: The driven clamping pipe fitting (4) includes a support frame (401), in which a clamping bead plate (403) is symmetrically slidably installed via a stabilizing rod (402) inside the support frame (401), and a second bidirectional lead screw (404) is screwed to the top of the clamping bead plate (403).