A fixing device for the inlet of a metal bent pipe straightening machine

By designing a fixing device for the inlet of a metal tube bending and straightening machine, the problem of unstable fixing of metal tubes at the inlet of the straightening machine is solved, achieving high-precision processing and wide applicability, suitable for metal tubes with different inner diameters.

CN224542933UActive Publication Date: 2026-07-24JINAN LANXIN AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINAN LANXIN AUTO PARTS CO LTD
Filing Date
2025-08-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing metal pipe straightening machines lack a reliable fixing structure at the inlet, which makes the metal pipes prone to displacement or shaking during processing, affecting processing accuracy. Furthermore, the existing fixing components have poor adaptability and cannot flexibly meet the fixing requirements of metal pipes of different specifications.

Method used

A fixing device for the inlet of a metal pipe straightening machine was designed, including a positioning component, an adjustment component, and a clamping component. The metal pipe is fixed by a snap-fit ​​and clamping structure to accommodate different inner diameter sizes, and the positioning component is stably installed by an installation mechanism.

Benefits of technology

It effectively prevents metal tubes from shifting during the straightening process, ensuring processing accuracy, and adapts to metal tubes with different inner diameters, thus expanding the applicability of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to straightening press technical field, and disclose a kind of metal elbow pipe straightening press entrance fixed device, including workbench, the workbench bottom is fixedly connected with supporting leg, the workbench top is fixedly connected with straightening equipment, the straightening equipment right side is fixedly connected with discharge port, the straightening equipment and discharge port are in the metal pipe setting, the discharge port right side is provided with fixed mechanism.The metal elbow pipe straightening press entrance fixed device, through the fixed mechanism being set, after metal pipe is placed in the straightening equipment and discharge port, staff can be connected with the positioning assembly outer ring of metal pipe, then positioning assembly is fixed in the discharge port right side, staff only needs to rotate the twist disc of upper and lower sides to control the clamping plate of upper and lower sides to move inwards, the clamping of metal pipe by the clamping plate of upper and lower sides, and the cooperation of the clamping cone being connected with the right side of metal pipe, the fixation of metal pipe is completed.
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Description

Technical Field

[0001] This utility model relates to the field of straightening machine technology, specifically to a fixing device for the inlet of a metal pipe straightening machine. Background Technology

[0002] A straightening machine is a device used to straighten metal profiles, bars, pipes, wires, etc. The straightening machine uses straightening rollers to compress the bar or other material, changing its straightness. Generally, there are two rows of straightening rollers, but the number varies. There are also two-roll straightening machines that rely on the angle changes of the two rollers (a concave, hyperbolic roller) to straighten materials of different diameters.

[0003] Existing metal tube straightening machines lack a reliable fixing structure at the inlet when processing metal tubes. During the process of the metal tube entering the straightening equipment, it is easy for the metal tube to shift or shake due to force, resulting in a decrease in the accuracy of subsequent straightening processing and making it difficult to guarantee the straightness requirements of the metal tube. At the same time, existing fixing components are mostly designed for metal tubes with specific inner diameters, with poor adaptability and unable to flexibly meet the fixing needs of metal tubes of different specifications, thus limiting the scope of application. These problems restrict the quality and efficiency of straightening processing. Therefore, it is necessary to design a fixing device for the inlet of a metal tube straightening machine. Utility Model Content

[0004] The purpose of this utility model is to provide a fixing device for the inlet of a metal pipe bending and straightening machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for the inlet of a metal pipe straightening machine, comprising a workbench, a support leg fixedly connected to the bottom of the workbench, a straightening device fixedly connected to the top of the workbench, a discharge port fixedly connected to the right side of the straightening device, a metal pipe disposed inside the straightening device and the discharge port, a fixing mechanism disposed to the right side of the discharge port, and installation mechanisms disposed on the front and rear sides of the fixing mechanism.

[0006] The fixing mechanism includes a positioning component, an adjusting component, and a clamping component. The positioning component is located on the right side of the discharge port, the adjusting component is located on the upper and lower sides of the positioning component, and the clamping component is located inside the adjusting component.

[0007] The installation mechanism includes a snap-fit ​​component, a locking component, and a knob component. The snap-fit ​​component is located on the front and rear sides of the positioning component, the locking component is located on the outside of the snap-fit ​​component, and the knob component is located on the outside of the locking component.

[0008] Preferably, the positioning component includes a sleeve plate, which is disposed on the right side of the discharge port and sleeved around the outer ring of the metal tube. A connecting plate is fixedly connected to the right side of the sleeve plate. The connecting plate is disposed on the upper and lower sides of the metal tube. A base plate is fixedly connected to the right side of the connecting plate. A retaining cone is fixedly connected to the left side of the base plate and engages with the inside of the right side of the metal tube.

[0009] Preferably, the adjusting component includes a fixed screw cylinder, which is fixedly connected to the connecting plate. The inner ring of the fixed screw cylinder is threadedly connected to a threaded shaft, and a torsion disc is fixedly connected to the outer side of the threaded shaft.

[0010] Preferably, the clamping assembly includes a clamping plate, which is rotatably connected to the inner side of the threaded shaft. Telescopic slide rods are fixedly connected to the four corners of the outer side of the clamping plate. The telescopic slide rods are slidably connected to the inner side of the connecting plate, and connecting strips are fixedly connected to the outer side of the telescopic slide rods.

[0011] Preferably, the snap-fit ​​assembly includes a fixing plate, which is fixedly connected to the right side of the sleeve plate, and is disposed on the front and rear sides of the metal tube. The fixing plate is fixedly connected to the left side of the base plate, and a frame plate is slidably connected to the outside of the fixing plate. The frame plate is fixedly connected to the right side of the discharge port, and a snap-fit ​​block is fixedly connected to the outside of the fixing plate. The snap-fit ​​block snaps into the inside of the right side of the frame plate, and a limit plate is fixedly connected to the outside of the snap-fit ​​block. The limit plate is fixedly connected to the front and rear sides of the base plate.

[0012] Preferably, the locking assembly includes a fixing box, which is fixedly connected to the outside of the limiting plate. A sliding piece is slidably connected inside the fixing box, and a pressure block is fixedly connected to the inner side of the sliding piece. The pressure block passes through the limiting plate and fits against the outside of the frame plate.

[0013] Preferably, the knob assembly includes a threaded turntable, which is rotatably connected to the outside of the fixed box. The inner ring of the threaded turntable is threadedly connected to a threaded rod, which is fixedly connected to the outside of the slide plate.

[0014] Compared with the prior art, the present invention provides a fixing device for the inlet of a metal pipe straightening machine, which has the following advantages:

[0015] 1. The inlet fixing device of this metal pipe bending and straightening machine, through the setting fixing mechanism, allows the operator to clamp the positioning component onto the outer ring of the metal pipe after the metal pipe is placed in the straightening equipment and the discharge port. After fixing the positioning component to the right side of the discharge port, the operator only needs to rotate the upper and lower torsion discs to control the upper and lower clamping plates to move inward. The clamping of the metal pipe by the upper and lower clamping plates, in conjunction with the clamping cone clamped inside the right side of the metal pipe, completes the fixing of the metal pipe, so that the metal pipe will not shift when it is bent through the straightening equipment, ensuring the processing accuracy of the subsequent bending process. At the same time, the clamping cone has a tapered shape that is narrower on the left and wider on the right, so that the device can be used to fix metal pipes with different inner diameters, increasing the applicability of the device.

[0016] 2. The inlet fixing device of this metal pipe bending and straightening machine, through the set installation mechanism, when the operator installs the positioning component, only needs to snap the clamping block into the inside of the right side of the frame plate, and then rotate the threaded turntables on the front and rear sides to control the pressure blocks on the front and rear sides to pass inward through the limiting plate and contact and squeeze with the outside of the frame plate. Through the friction generated by the squeezing between the pressure block and the frame plate, the position of the positioning component is fixed, so that it can cooperate with the clamping cone to fix the positioning component at any position inside the frame plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a partial structural separation diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of part of the structure of this utility model. Figure 1 ;

[0021] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0022] Figure 5 This is a schematic diagram of part of the structure of this utility model. Figure 2 ;

[0023] Figure 6 This is a sectional view of the installation mechanism.

[0024] In the diagram: 1. Fixing mechanism; 11. Positioning assembly; 1101. Sleeve plate; 1102. Connecting plate; 1103. Base plate; 1104. Taper; 12. Adjusting assembly; 1201. Fixing screw; 1202. Threaded shaft; 1203. Torque disc; 13. Clamping assembly; 1301. Clamping plate; 1302. Telescopic slide rod; 1303. Connecting bar; 2. Installation mechanism; 21. Snap-fit ​​assembly; 2101. Fixing plate; 2102. Frame plate; 2103. Clamping block; 2104. Limiting plate; 22. Locking assembly; 2201. Fixing box; 2202. Sliding plate; 2203. Pressure block; 23. Knob assembly; 2301. Threaded turntable; 2302. Threaded rod; 3. Workbench; 31. Support leg; 4. Straightening equipment; 41. Discharge port; 5. Metal pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This utility model provides a technical solution:

[0028] Example 1

[0029] Combination Figures 1 to 5 A fixing device for the inlet of a metal pipe straightening machine includes a workbench 3, a support leg 31 fixedly connected to the bottom of the workbench 3, a straightening device 4 fixedly connected to the top of the workbench 3, a discharge port 41 fixedly connected to the right side of the straightening device 4, a metal pipe 5 installed inside the straightening device 4 and the discharge port 41, a fixing mechanism 1 installed to the right side of the discharge port 41, and installation mechanisms 2 installed on the front and rear sides of the fixing mechanism 1.

[0030] The fixing mechanism 1 includes a positioning component 11, an adjusting component 12, and a clamping component 13. The positioning component 11 is located on the right side of the discharge port 41, the adjusting component 12 is located on the upper and lower sides of the positioning component 11, and the clamping component 13 is located inside the adjusting component 12.

[0031] Positioning component 11 includes a sleeve plate 1101, which is located on the right side of the discharge port 41 and fits onto the outer ring of the metal tube 5. A connecting plate 1102 is fixedly connected to the right side of the sleeve plate 1101. The connecting plate 1102 is located on the upper and lower sides of the metal tube 5. A base plate 1103 is fixedly connected to the right side of the connecting plate 1102. A retaining cone 1104 is fixedly connected to the left side of the base plate 1103 and engages with the inner right side of the metal tube 5. Adjustment component 12 includes a fixing screw cylinder 1201. 201 is fixedly connected to the connecting plate 1102. The inner ring of the fixed screw cylinder 1201 is threadedly connected to the threaded shaft 1202. The outside of the threaded shaft 1202 is fixedly connected to the torsion plate 1203. The clamping assembly 13 includes a clamping plate 1301. The clamping plate 1301 is rotatably connected to the inside of the threaded shaft 1202. The four corners of the outside of the clamping plate 1301 are fixedly connected to telescopic slide rods 1302. The telescopic slide rods 1302 are slidably connected to the connecting plate 1102. The outside of the telescopic slide rods 1302 is fixedly connected to the connecting strip 1303.

[0032] Furthermore: After the metal tube 5 is placed in the straightening device 4 and the discharge port 41, the operator can clamp the positioning component 11 onto the outer ring of the metal tube 5. After fixing the positioning component 11 to the right side of the discharge port 41, the operator only needs to rotate the upper and lower twisting discs 1203 to control the upper and lower clamping plates 1301 to move inward. The clamping of the metal tube 5 by the upper and lower clamping plates 1301, in conjunction with the clamping cone 1104 clamped in the right side of the metal tube 5, completes the fixation of the metal tube 5. This ensures that the metal tube 5 will not shift when it is bent through the straightening device 4, thus guaranteeing the processing accuracy when bending the metal tube 5. At the same time, the clamping cone 1104 has a tapered shape that is narrower on the left and wider on the right, so that the device can be used to fix metal tubes 5 with different inner diameters, increasing the applicability of the device.

[0033] Example 2

[0034] See Figures 1 to 6 Furthermore, based on Embodiment 1, the installation mechanism 2 includes a snap-fit ​​component 21, a locking component 22, and a knob component 23. The snap-fit ​​component 21 is disposed on the front and rear sides of the positioning component 11, the locking component 22 is disposed on the outside of the snap-fit ​​component 21, and the knob component 23 is disposed on the outside of the locking component 22.

[0035] The snap-fit ​​assembly 21 includes a fixing plate 2101, which is fixedly connected to the right side of the sleeve plate 1101. The fixing plate 2101 is disposed on the front and rear sides of the metal tube 5. The fixing plate 2101 is fixedly connected to the left side of the base plate 1103. A frame plate 2102 is slidably connected to the outside of the fixing plate 2101. The frame plate 2102 is fixedly connected to the right side of the discharge port 41. A locking block 2103 is fixedly connected to the outside of the fixing plate 2101. The locking block 2103 is snapped into the right side of the frame plate 2102. A limiting plate 2104 is fixedly connected to the outside of the locking block 2103. The limiting plate 2104 is fixedly connected to the base plate 1103. 3. On both the front and rear sides, the locking assembly 22 includes a fixed box 2201, which is fixedly connected to the outside of the limiting plate 2104. A sliding piece 2202 is slidably connected inside the fixed box 2201. A pressure block 2203 is fixedly connected to the inside of the sliding piece 2202. The pressure block 2203 passes through the limiting plate 2104 and fits against the outside of the frame plate 2102. The knob assembly 23 includes a threaded turntable 2301, which is rotatably connected to the outside of the fixed box 2201. A threaded rod 2302 is threadedly connected to the inner ring of the threaded turntable 2301. The threaded rod 2302 is fixedly connected to the outside of the sliding piece 2202.

[0036] Furthermore: When installing the positioning component 11, the staff only needs to snap the locking block 2103 into the inside of the right side of the frame plate 2102, and then rotate the threaded turntables 2301 on the front and rear sides to control the pressing blocks 2203 on the front and rear sides to pass inward through the limiting plate 2104 and contact and press against the outside of the frame plate 2102. Through the friction generated by the pressing block 2203 and the frame plate 2102, the position of the positioning component 11 is fixed, so that it can cooperate with the locking cone 1104 to fix the positioning component 11 at any position inside the frame plate 2102.

[0037] In actual operation, when this device is used, the operator first places the metal tube 5 into the straightening device 4 and the discharge port 41. Then, the operator places the sleeve plate 1101 on the right side of the metal tube 5 and moves it to the left. At this time, the fixing plate 2101 is engaged with the inside of the frame plate 2102, and the locking block 2103 is engaged with the inside of the right side of the frame plate 2102 until the locking cone 1104 is engaged with the inside of the right side of the metal tube 5 and can no longer move to the left. Then, the operator rotates the threaded turntables 2301 on the front and rear sides. The rotation of the threaded turntables 2301 drives the threaded rod 2302 to move inward. The inward movement of the threaded rod 2302 drives the pressure block 2203 to move inward through the sliding plate 2202. The pressure block 2203 moves inward through the limiting plate 2104 and contacts the outside of the frame plate 2102 until the threaded turntables 2301 on the front and rear sides can no longer rotate. At this time, the fixing of the positioning component 11 is completed.

[0038] Then, the staff rotates the upper and lower torsion plates 1203. The rotation of the torsion plates 1203 drives the threaded shaft 1202 to rotate. The threaded shaft 1202 rotates and moves closer to the metal tube 5 from the inner ring of the fixed screw cylinder 1201. The movement of the threaded shaft 1202 drives the clamping plate 1301 to move. The clamping plates 1301 on both the upper and lower sides move closer to the metal tube 5 at the same time, and cooperate with each other to complete the clamping of the metal tube 5. At this time, the fixing of the right end of the metal tube 5 is completed.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A fixing device for the inlet of a metal pipe bending and straightening machine, comprising a worktable (3), characterized in that: The bottom of the workbench (3) is fixedly connected to a support leg (31), the top of the workbench (3) is fixedly connected to a straightening device (4), the right side of the straightening device (4) is fixedly connected to a discharge port (41), a metal tube (5) is provided inside the straightening device (4) and the discharge port (41), a fixing mechanism (1) is provided on the right side of the discharge port (41), and an installation mechanism (2) is provided on the front and rear sides of the fixing mechanism (1). The fixing mechanism (1) includes a positioning component (11), an adjusting component (12) and a clamping component (13). The positioning component (11) is located on the right side of the discharge port (41), the adjusting component (12) is located inside the upper and lower sides of the positioning component (11), and the clamping component (13) is located inside the adjusting component (12). The installation mechanism (2) includes a snap-fit ​​component (21), a locking component (22) and a knob component (23). The snap-fit ​​component (21) is located on the front and rear sides of the positioning component (11). The locking component (22) is located on the outside of the snap-fit ​​component (21). The knob component (23) is located on the outside of the locking component (22).

2. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The positioning component (11) includes a sleeve plate (1101), which is located on the right side of the discharge port (41). The sleeve plate (1101) is sleeved on the outer ring of the metal tube (5). A connecting plate (1102) is fixedly connected to the right side of the sleeve plate (1101). The connecting plate (1102) is located on the upper and lower sides of the metal tube (5). A base plate (1103) is fixedly connected to the right side of the connecting plate (1102). A retaining cone (1104) is fixedly connected to the left side of the base plate (1103). The retaining cone (1104) is engaged with the inside of the right side of the metal tube (5).

3. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The adjustment assembly (12) includes a fixed screw cylinder (1201), which is fixedly connected to the connecting plate (1102). The inner ring of the fixed screw cylinder (1201) is threadedly connected to a threaded shaft (1202), and a torsion disc (1203) is fixedly connected to the outer side of the threaded shaft (1202).

4. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The clamping assembly (13) includes a clamping plate (1301), which is rotatably connected to the inner side of the threaded shaft (1202). Telescopic slide rods (1302) are fixedly connected to the four corners of the outer side of the clamping plate (1301). The telescopic slide rods (1302) are slidably connected to the connecting plate (1102). A connecting strip (1303) is fixedly connected to the outer side of the telescopic slide rods (1302).

5. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The snap-fit ​​assembly (21) includes a fixing plate (2101), which is fixedly connected to the right side of the sleeve plate (1101). The fixing plate (2101) is disposed on the front and rear sides of the metal tube (5). The fixing plate (2101) is fixedly connected to the left side of the base plate (1103). A frame plate (2102) is slidably connected to the outside of the fixing plate (2101).

6. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 5, characterized in that: The frame plate (2102) is fixedly connected to the right side of the feeding port (41). A locking block (2103) is fixedly connected to the outside of the fixing plate (2101). The locking block (2103) is locked inside the right side of the frame plate (2102). A limiting plate (2104) is fixedly connected to the outside of the locking block (2103). The limiting plate (2104) is fixedly connected to the front and rear sides of the base plate (1103).

7. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The locking assembly (22) includes a fixed box (2201), which is fixedly connected to the outside of the limiting plate (2104). A sliding piece (2202) is slidably connected inside the fixed box (2201), and a pressure block (2203) is fixedly connected to the inside of the sliding piece (2202). The pressure block (2203) passes through the limiting plate (2104) and fits against the outside of the frame plate (2102).

8. The fixing device for the inlet of a metal pipe bending straightening machine according to claim 1, characterized in that: The knob assembly (23) includes a threaded turntable (2301), which is rotatably connected to the outside of the fixed box (2201). The inner ring of the threaded turntable (2301) is threadedly connected to a threaded rod (2302), which is fixedly connected to the outside of the slide (2202).