Positioning device

Abstract

The utility model discloses a positioning device which comprises a positioning part and a driving part, the positioning part comprises a base and at least two profiling blocks arranged on the base at intervals, each profiling block comprises a clamping face with the same profile configuration as a hot air expansion pipe fitting, and the clamping faces extend out of the base so that the projections of the clamping faces on the mounting face can be separated from the base; the driving part is in transmission connection with the base so as to drive the base to rotate clockwise and anticlockwise, the driving part drives the base to rotate by a preset angle at a single time, and the integral multiple of the preset angle is 180 degrees. According to the utility model, the profiling block is matched with the molded surface of the hot air expansion pipe fitting to clamp the hot air expansion pipe fitting, and the hot air expansion pipe fitting is staggered with the base in the vertical direction through the extending arrangement structure of the clamping surface relative to the base; and the left and right transmission of the driving part can turn over by 180 degrees to carry out bottom surface processing on the premise that the hot air expansion pipe fitting is clamped by the profiling block, and the processing is not blocked by the base, so that the accuracy and the efficiency of the processing process are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting processing equipment technology, and in particular to a positioning device. Background Technology

[0002] Hot gas expansion tubes are products manufactured using hot gas expansion forming technology for metal tubing. They are used in various automotive parts forming processes due to their high strength and low springback. Currently, hot gas expansion tubes require laser cutting after forming to accommodate mounting points. However, because the tubes cannot be punched during the expansion process, positioning holes for clamping are not provided during laser cutting. Using both ends of the tube as a reference for positioning leads to inconsistencies in the dimensions of the expanded ends, making it difficult to meet the hole precision requirements. Furthermore, for irregular hot gas expansion tubes, laser cutting often involves multiple steps, requiring the tube to be rotated before clamping when working on different surfaces. This also affects hole precision and reduces processing efficiency.

[0003] Therefore, how to improve the accuracy and efficiency of the laser cutting process for hot gas expansion tubes is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a positioning device to improve the accuracy and efficiency of the laser cutting process of hot gas expansion tubes.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A positioning device, comprising:

[0007] The positioning part includes a base and at least two contour blocks spaced apart on the base. The contour blocks include clamping surfaces with the same profile as the hot gas expansion tube. The clamping surfaces extend out of the base so that their projections on their mounting surfaces are separate from the base.

[0008] The driving unit is connected to the base to drive the base to rotate clockwise and counterclockwise. The driving unit drives the base to rotate a preset angle at a time, and the preset angle is an integer multiple of 180°.

[0009] Preferably, in the above-described positioning device, at least one of the contour blocks is slidably disposed in the length direction of the base to adjust its clamping distance with other contour blocks.

[0010] Preferably, in the above positioning device, the clamping surface is adjusted by a cylinder to change the clamping opening, and the minimum clamping opening of the clamping surface is less than the cross-sectional dimensions of the hot air expansion tube.

[0011] Preferably, in the above positioning device, the driving unit includes a drive motor and a flipping base, the drive motor drives the flipping base to rotate through a power shaft, and the base is fixedly mounted on the flipping base.

[0012] Preferably, in the above positioning device, the flipping seat has an L-shaped structure and includes a mounting plate for fixing the base. When the flipping seat is in the initial position, the positioning part is located at the top of the mounting plate in the vertical direction; when the flipping seat is flipped 180° from the initial position, the positioning part is located at the bottom of the mounting plate in the vertical direction.

[0013] Preferably, in the above-described positioning device, the height of the flipping seat in the vertical direction is not less than the height of the positioning part in the vertical direction.

[0014] Preferably, in the above positioning device, the drive unit further includes a reducer and a button box; the button box includes a first button for adjusting the rotational drive direction of the drive motor on the flipping seat, and a second button for adjusting the drive motor to perform a single drive action; the reducer is used to reduce the drive speed of the drive motor and increase its output torque.

[0015] Preferably, in the above positioning device, the button box further includes a third button for adjusting the drive motor to reset the flip seat to its initial position.

[0016] Preferably, in the above-described positioning device, the plurality of clamping surfaces are arranged with the same or different extension lengths relative to the base.

[0017] Preferably, in the above positioning device, the preset angle is 45°, 90° or 180°.

[0018] As can be seen from the above technical solution, the positioning device provided by this utility model uses a positioning part to position and clamp the hot gas expansion tube, and uses a driving part to flip the positioning part, so that the hot gas expansion tube can meet the processing requirements of different surfaces with only one clamping. The positioning part uses a contour block to stably clamp the hot gas expansion tube, and by extending its clamping surface relative to the base, the hot gas expansion tube can be in a cantilever structure relative to the base. After the driving part flips the positioning part 180°, the other side of the hot gas expansion tube will not be blocked by the base and can be laser cut. This achieves the processing requirements of the top and bottom surfaces of the hot gas expansion tube in a single clamping process, without disassembling, flipping and re-clamping, thus improving processing accuracy and processing efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 A schematic diagram of the positioning device provided in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the positioning part;

[0022] Figure 3 A schematic diagram of the cross-section of a hot gas expansion tube clamped by a contour block;

[0023] Figure 4 This is a schematic diagram of the drive unit.

[0024] Figure 5 This is a schematic diagram of the structure when the positioning part is in its initial position;

[0025] Figure 6 for Figure 5 A schematic diagram of the structure when the positioning part is rotated 180°.

[0026] in,

[0027] 10-Positioning part; 110-Base; 120-Following block; 1210-Clamping surface;

[0028] 20-Drive unit; 210-Drive motor; 220-Flip base; 2210-Mounting plate; 230-Reducer; 240-Button box;

[0029] 30 - Hot gas expansion fitting. Detailed Implementation

[0030] The core of this utility model lies in disclosing a positioning device to improve the accuracy and efficiency of the laser cutting process for hot gas expansion tubes.

[0031] To enable those skilled in the art to better understand the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention as described in the claims.

[0032] like Figures 1-6As shown, the positioning device provided in this embodiment of the present invention mainly includes a positioning part 10 and a driving part 20. The positioning part 10 is used to clamp and position the hot gas expansion tube 30. It mainly includes a base 110 and a contour block 120 disposed on the base 110. The base 110 provides a basic bearing structure, while the contour block 120 is used to clamp and lock the outer wall surface of the hot gas expansion tube 30. The contour block 120 specifically includes an open clamping surface 1210. The clamping surface 1210 has the same profile as the hot gas expansion tube 30, so that the hot gas expansion tube 30 can be stably clamped with the outer wall of the hot gas expansion tube 30 as a reference. It should be noted that the profile is the outer surface required by the structure of the hot gas expansion tube 30. It has high precision to meet the shape requirements of the hot gas expansion tube 30. The clamping surface 1210 clamps the hot gas expansion tube 30 with the profile of the hot gas expansion tube 30 as a positioning reference, so that the hot gas expansion tube 30 has a more accurate positioning state, and thus the structure such as the laser-processed hole can be closer to the design position.

[0033] As for the positioning part 10, the clamping surface 1210 on its contour block 120 extends outward relative to the base 110. Specifically, the projection of the clamping surface 1210 on its mounting surface is separate from the base 110. Taking the base 110 as an example on a horizontal plane, the projection of the clamping surface 1210 on the horizontal plane where the base 110 is located is separate from the base 110, that is, it is spaced apart from the base 110. The above structure enables the hot air expansion tube 30 to be cantilevered relative to the base 110 when the clamping surface 1210 clamps it. This ensures that the hot air expansion tube 30 is not obstructed by the base 110 in the initial clamping state and the subsequent flipping state, so that the laser cutting process can be executed smoothly.

[0034] Based on this, the drive unit 20 is connected to the base 110 for transmission, enabling the base 110 to rotate clockwise and counterclockwise. It should be noted that the drive unit 20 can be a rocker arm located on one side of the base 110 and connected to it, so that the rotation axis of the base 110 is located within the base 110. Alternatively, the drive unit 20 can be spaced apart from the base 110, allowing the base 110 to rotate as a whole via a motor, cylinder, or other structure. The drive unit 20 can be configured to drive the base 110 to rotate a preset angle in a single operation, with the preset angle being an integer multiple of 180°. That is, through one or more driving processes, the drive unit 20 can achieve the rotation of the base 110, thereby causing the hot air expansion tube 30 to rotate 180°.

[0035] The above structure, while achieving stable clamping of the hot gas expansion tube 30 through the positioning part 10, also enables the hot gas expansion tube 30 to rotate 180° through the driving part 20. When processing of the hot gas expansion tube 30 is required, the hot gas expansion tube 30 can be clamped on the positioning part 10 first. With the close fit between the clamping surface 1210 and the profile of the hot gas expansion tube 30, the hot gas expansion tube 30 has a stable reference. Laser processing is then performed based on the state of the hot gas expansion tube 30 at this time, resulting in a higher surface finish on the processed surface. The machining accuracy is improved. When the other side of the hot gas expansion tube 30 needs to be processed, the base 110 can be rotated 180° by the drive unit 20, so that the other side of the hot gas expansion tube 30 faces the laser processing equipment, and the other side of the hot gas expansion tube 30 is processed by the laser equipment. This process only requires the drive unit 20 to move, without disassembling or clamping the hot gas expansion tube 30. The hot gas expansion tube 30 has a uniform and stable reference datum in the two processing processes, thereby improving the accuracy of the tube process.

[0036] Meanwhile, the process is convenient to operate and has high processing efficiency. After the hot air expansion tube 30 is processed as a whole, the base 110 can be reset or rotated by the reverse drive of the drive unit 20, and the hot air expansion tube 30 can be disassembled at an angle that is easy to operate.

[0037] It should also be noted that, by setting a preset angle, the hot air expansion tube 30 can maintain a stable clamping state under different angle rotations, while other areas of the hot air expansion tube 30 face the laser processing equipment. This can increase the number of effective processing surfaces of the hot air expansion tube 30 by the laser processing equipment. For the off-center holes on the hot air expansion tube 30, they can be aligned with the laser processing equipment by adjusting the preset angle several times, thereby further improving the accuracy of the hot air expansion tube 30 during the processing.

[0038] Furthermore, considering that the hot gas expansion tube 30 may bend along its length, there is a risk that the spacing of the contour blocks 120 may not meet the appropriate clamping area on the hot gas expansion tube 30. Therefore, in some embodiments of this utility model, at least one contour block 120 is slidably arranged along the length of the base 110 to enable adjustment of the clamping distance between the contour block 120 and other contour blocks 120. This allows for adjustment of the effective clamping distance between the contour block 120 and other contour blocks 120. For hot gas expansion tubes 30 with different effective clamping areas, stable clamping can be achieved through sliding adjustment, making the positioning device provided by this utility model embodiment more versatile.

[0039] Furthermore, it should be noted that, considering the ease of clamping the hot gas expansion tube 30, in the positioning device provided in this utility model embodiment, the clamping opening of the clamping surface 1210 is adjustable and is adjusted by a cylinder. It should also be noted that the minimum clamping opening of the clamping surface 1210 is less than the cross-sectional dimension of the hot gas expansion tube 30.

[0040] Based on this, the clamping process of the hot air expansion tube 30 is performed on the positioning part 10. The clamping opening of the clamping surface 1210 can be increased by the cylinder, and the hot air expansion tube 30 is placed into the opened clamping surface 1210. Then, the clamping opening of the clamping surface 1210 is reduced by the cylinder drive, and its opening is adjusted according to the set pre-tightening force, so that the clamping surface 1210 can achieve the clamping operation of the hot air expansion tube 30 with a certain pre-tightening force.

[0041] Furthermore, in some embodiments of this utility model, to facilitate the assembly and maintenance of the positioning device, the positioning part 10 and the driving part 20 are designed as relatively independent modules, while... Figure 4 As shown, the drive unit 20 includes a drive motor 210 and a tilting base 220. The drive motor 210 drives the tilting base 220 to rotate. This movement can be achieved by direct connection to the motor's power shaft, with the drive shaft rotating under its influence, or by meshing with gears mounted on the motor shaft. This is a common connection structure for the drive motor 210 and will not be described further here. Correspondingly, the base 110 is fixedly mounted on the tilting base 220 to achieve synchronous rotation while the drive motor 210 drives the tilting base 220 to rotate. This structure allows the positioning unit 10 and the drive unit 20 to be independent modules, requiring only connecting parts for assembly. A single drive unit 20 can be used to connect with positioning units 10 of different sizes, thus improving the versatility of the positioning device and the possibility of future structural updates and expansions.

[0042] Based on the above embodiments, the flip base 220 can be configured as a single-layer plate or a plate with an L-shaped cross-section along its length. When the flip base 220 is a single-layer plate, it can be directly partially attached and fixed to the base 110. When the flip base 220 is an L-shaped plate, it includes a mounting plate 2210. The mounting plate 2210 is parallel to the base 110 and is attached to the base 110 through a portion of its area, so that the base 110 has sufficient mounting surface on the flip base 220 to maintain its connection stability.

[0043] Based on this, taking the drive unit 20 as an example of being positioned on a horizontal plane, when the flip base 220 is in its initial position, the positioning part 10 is located at the top of the mounting plate 2210 in the vertical direction. That is, when the positioning part 10 and the drive unit 20 are assembled, the base 110 is attached to and fixed to the top surface of the mounting surface. When the flip base 220 is flipped 180° from its initial position, the positioning part 10 is located at the bottom of the mounting plate 2210 in the vertical direction. The mounting plate 2210 provides a horizontally attached connecting surface for the positioning part 10 in both its initial position and when it is flipped 180° from its initial position, thereby improving the connection stability between the positioning part 10 and the drive unit 20 and avoiding the risk of slippage caused by tilting forces between the positioning part 10 and the drive unit 20.

[0044] Based on this, the height of the flip base 220 in the vertical direction is not less than the height of the positioning part 10 in the vertical direction, so as to provide the drive part 20 with more flexible structural settings. The height setting of the flip base 220 in the vertical direction allows the positioning part 10 to be within the projection coverage of the flip base 220 in the vertical direction when it is in the initial position and when it is rotated 180° from the initial position. Correspondingly, the drive part 20 does not need to raise the positioning part 10 to meet the rotation requirements. When setting the drive part 20, it only needs to keep the mounting plate 2210 on the flip base 220 in a horizontal state to meet the subsequent rotation requirements. It should be noted that it is preferable that there is a certain gap between the mounting plate 2210 and the setting plane of the drive part 20 to meet the subsequent rotation space requirements of the positioning part 10.

[0045] In order to further optimize the above technical solution, in some embodiments of this utility model, the drive unit 20 also includes a reducer 230 and a button box 240. The reducer 230 is used to reduce the driving speed of the drive motor 210 and increase its output torque, so as to improve the driving stability of the drive motor 210 when driving the integrated structure of the heavy flip seat 220, the positioning part 10 and the hot air expansion tube 30. The button box 240 is used for operators to conveniently adjust the drive unit 20. The button box 240 includes at least a first button and a second button. The first button of the button box 240 is used to adjust the rotation drive direction of the drive motor 210 on the flip seat 220. Taking the initial drive direction of the drive motor 210 on the flip seat 220 as counterclockwise as an example, pressing the first button once will reverse the output torque of the drive motor 210 and change it to clockwise drive on the flip seat 220. Similarly, pressing the first button again will reverse the output torque of the drive motor 210 and change its drive on the flip seat 220 from clockwise drive back to counterclockwise drive.

[0046] The second button is used to adjust the drive motor 210 to perform a single drive action. It should be noted that, as in the aforementioned embodiment, the single drive of the drive unit 20 is to drive the base 110 to rotate by a preset angle. Correspondingly, after pressing the second button, the drive motor 210 performs a drive action of the preset angle on the base 110. When it is necessary to continue driving, the second button is pressed again so that the drive motor 210 performs a drive action of the preset angle on the base 110 again.

[0047] The combined use of the first and second buttons allows the operator to freely adjust the side of the hot gas expansion tube 30 facing the laser processing equipment during the processing of the hot gas expansion tube 30, thereby meeting the diverse processing needs of the hot gas expansion tube 30.

[0048] Considering that after the processing of the hot air expansion tube 30 is completed, the positioning part 10 needs to be reset to the initial position so that the hot air expansion tube 30 can be kept in the initial clamping state for inspection and disassembly, but the multiple operations of the button box 240 are cumbersome, in some embodiments of this utility model, the button box 240 also includes a third button. The third button is used to adjust the drive motor 210 to reset the flip seat 220 to the initial position. After the hot air expansion tube 30 has completed all processing, the third button is pressed to reset it, which can facilitate the subsequent inspection and disassembly process and improve the overall processing efficiency.

[0049] Furthermore, since the hot gas expansion tube 30 requires bending parts, in the positioning device provided in this embodiment of the utility model, multiple clamping surfaces 1210 are arranged with the same or different extension lengths relative to the base 110. For clamping surfaces 1210 with the same extension length, they can clamp the hot gas expansion tube 30 with a straight structure; for clamping surfaces 1210 with different extension lengths, they can clamp the hot gas expansion tube 30 with a bent structure. By selecting appropriate positions and numbers of contour blocks 120, the stable clamping effect of hot gas expansion tubes 30 with different structures can be achieved.

[0050] Furthermore, it should be noted that, considering the common processing surface requirements of parts, in some embodiments of this utility model, the preset angle is 45°, 90° or 180°, which can be adjusted by single or multiple flips to meet the processing requirements of different processing surfaces of the hot gas expansion tube.

[0051] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning device, characterized in that, include: The positioning part includes a base and at least two contour blocks spaced apart on the base. The contour blocks include clamping surfaces with the same profile as the hot gas expansion tube. The clamping surfaces extend out of the base so that their projections on their mounting surfaces are separate from the base. The driving unit is connected to the base to drive the base to rotate clockwise and counterclockwise. The driving unit drives the base to rotate a preset angle at a time, and the preset angle is an integer multiple of 180°.

2. The positioning device as described in claim 1, characterized in that, At least one of the contour blocks is slidably disposed in the length direction of the base to adjust its clamping distance with the other contour blocks.

3. The positioning device as described in claim 1, characterized in that, The clamping surface is adjusted by a cylinder to change the clamping opening, and the minimum clamping opening of the clamping surface is less than the cross-sectional dimensions of the hot gas expansion tube.

4. The positioning device as described in claim 1, characterized in that, The drive unit includes a drive motor and a tilting base. The drive motor drives the tilting base to rotate via a power shaft, and the base is fixedly mounted on the tilting base.

5. The positioning device as described in claim 4, characterized in that, The flip seat has an L-shaped structure and includes a mounting plate for fixing the base. When the flip seat is in the initial position, the positioning part is located at the top of the mounting plate in the vertical direction; when the flip seat is flipped 180° from the initial position, the positioning part is located at the bottom of the mounting plate in the vertical direction.

6. The positioning device as described in claim 5, characterized in that, The height of the flipping seat in the vertical direction is not less than the height of the positioning part in the vertical direction.

7. The positioning device as described in claim 4, characterized in that, The drive unit also includes a speed reducer and a button box; the button box includes a first button for adjusting the rotational drive direction of the drive motor on the tilting seat, and a second button for adjusting the drive motor to perform a single drive action; the speed reducer is used to reduce the drive speed of the drive motor and increase its output torque.

8. The positioning device as described in claim 7, characterized in that, The button box also includes a third button for adjusting the drive motor to reset the flip seat to its initial position.

9. The positioning device as described in claim 1, characterized in that, The plurality of clamping surfaces are arranged with the same or different extension lengths relative to the base.

10. The positioning device according to any one of claims 1-9, characterized in that, The preset angle is 45°, 90° or 180°.

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