One direction for welding fixtures

Abstract

This utility model relates to the technical field of welding operation auxiliary devices, and discloses a directional welding fixture, including a platform, a riser positioning seat disposed in the middle of the platform, a pipe positioning mechanism and an end positioning mechanism symmetrically disposed on both sides of the riser positioning seat, and a support limiting mechanism symmetrically disposed on the two pipe positioning mechanisms. A top limiting detection structure is also provided on the outer side of the end positioning mechanism, and a riser clamping mechanism is provided on the front side of one side of the riser positioning seat. This fixture enables accurate positioning and fixing of each part to be welded, and allows for detection of whether the parts to be welded meet the requirements before welding, improving the welding quality and finished product quality, while avoiding welding defective products and thus avoiding waste of manpower and resources.

Description

Technical Field

[0001] This utility model relates to the technical field of welding operation auxiliary devices, specifically to a welding fixture with a directional orientation. Background Technology

[0002] The handlebars of a motorcycle or electric vehicle are typically U-shaped components that are gripped with both hands to steer the vehicle. The two ends of the U-shape extend symmetrically outward to form grips for mounting the control levers and brake levers. A vertical support tube is located at the bottom center of the U-shape and connects to the front wheel bracket. Rotating the grips drives the front wheel to turn left or right through the vertical support tube, thus controlling the direction of the motorcycle. Therefore, the handlebars are an important component of the motorcycle's frame.

[0003] Due to their unique shape, the U-shaped handlebars are typically made by bending steel pipes before being welded to the vertical tube. Currently, the common welding method involves using a simple clamp and manual operation to place the handlebar into the radial arc-shaped notch at the top of the vertical tube. A support rod is used to support the height of the handlebar on both sides, ensuring that the height and angle of the handlebar on both sides meet the design requirements when the vertical tube is in a vertical position, before welding. To improve welding quality, a welding clamp for motorcycle handlebars, such as CN214978810U, can be used.

[0004] However, none of the above welding clamping methods can guarantee that the relative positions of the vertical tube and the handle tube fully meet the relevant requirements before welding, nor can they guarantee that the relative positions of the vertical tube and the handle will not change during the welding process. This means that the welded product may not meet the relevant technical requirements, thus affecting the welding quality and finished product quality. Therefore, how to accurately position and fix each part to be welded during welding is an important means to ensure the welding quality and finished product quality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a directional welding fixture that enables accurate positioning and fixing of each part to be welded. It also allows for the detection of whether the parts to be welded meet the requirements before welding, thereby improving the welding quality and finished product quality. At the same time, it avoids welding defective products, which would otherwise waste manpower and resources. This overcomes the problem in existing technologies where the relative position of the workpieces to be welded cannot be accurately positioned, resulting in welded products that may not meet relevant technical requirements, thus affecting the welding quality and finished product quality.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This utility model is a directional welding fixture, including a platform, a riser positioning seat set in the middle of the platform, a pipe positioning mechanism and an end positioning mechanism symmetrically arranged on both sides of the riser positioning seat, and a support limiting mechanism symmetrically provided on the two pipe positioning mechanisms. A top limit detection structure is also provided on the outside of the end positioning mechanism, and a riser clamping mechanism is also provided in front of one side of the riser positioning seat.

[0008] Further improvements include: the riser positioning seat includes: a mandrel connected to the platform and mounted on the base, and a mandrel mounted on the base and adapted to fit the riser; the mandrel has a positioning hole perpendicular to the axis; the riser clamping mechanism includes: a connecting seat connected to the platform, a quick-clamp structure mounted on the connecting seat, and a positioning pin connecting one end of the quick-clamp structure; the other end of the positioning pin is adapted to the positioning hole; and the quick-clamp structure is fixedly connected to the connecting seat via a connecting flange.

[0009] A further improvement is that the handle tube positioning mechanism is located near the outside of the bend on the handle tube, and includes: a first support base, a first clamping seat located on the top of the first support base, a first pressure block located above the first clamping seat for clamping the handle tube, and a first drive connected to and driving one end of the first pressure block. The first drive is connected to one side of the first support base via a first side support, and the support limiting mechanism is located on the other side of the first support base.

[0010] A further improvement is that: the upper end of the first clamp is provided with a groove for the handle tube, and a hinge support for the first pressure block is provided between the first drive and the first clamp. The hinge support includes: a hinge seat and a hinge frame disposed above the hinge seat. The hinge seat is fixed on the first drive or the first side support. The hinge frame is hinged to the first pressure block through a hinge shaft. The first drive drives the first pressure block to rotate around the hinge frame to press or release the handle tube.

[0011] A further improvement is that the support limiting mechanism is located on one side of the tube positioning mechanism and extends close to the side of the riser positioning seat to abut and limit the lower bend of the tube. The support limiting mechanism includes a support connecting part and a support limiting part. One end of the support connecting part is connected to the first support seat, and the other end of the support connecting part extends laterally along the first support seat and is connected to the support limiting part. The support limiting part is provided with a limiting groove that fits and abuts against the lower bend of the tube.

[0012] A further improvement is that the end positioning mechanism includes: a second support base, a second clamping seat disposed on the top of the second support base, a second pressure block disposed above the second clamping seat for clamping the end of the handle tube, a second drive connected to and driving one end of the second pressure block, and a hinged support disposed in the middle of the second pressure block, consisting of a hinged seat and a hinged frame. The second drive is connected to one side of the second support base through a second side support. The top limit detection structure is disposed on the outside of the second support base and is correspondingly disposed to the top groove of the second clamping seat.

[0013] A further improvement is that the top limit detection structure includes a bracket connected to the second support base and a limit block disposed above the bracket and abutting against the end of the handle tube, wherein the limit block is tunably connected to the bracket.

[0014] Further improvements include: the bottom of the riser clamping mechanism, the pipe positioning mechanism, and the end positioning mechanism are also provided with a reinforcing structure and a limiting structure, and the limiting structure is fixed at a right angle to the platform on the outer side of the bottom of the riser clamping mechanism, the pipe positioning mechanism, and the end positioning mechanism.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This application sets a riser positioning seat in the middle of the platform and a riser clamping mechanism in front of the riser positioning seat to clamp the riser onto the riser positioning seat, ensuring that the riser is completely positioned. By setting up a handle positioning mechanism and an end positioning mechanism on both sides of the riser positioning seat, the bending part and end of the handle can be positioned and supported and the point conformity can be detected. This can achieve accurate positioning and clamping of the riser and handle, ensuring that there is no movement or displacement during the welding process, and ensuring the welding quality of the handlebar riser.

[0017] By setting a support and limiting mechanism on the side of the pipe positioning mechanism near the riser positioning seat, the bending part of the pipe is limited and supported, and the bending point at this position is simultaneously tested for compliance. Furthermore, the welding quality and finished product quality can be improved by detecting that the parts to be welded meet the requirements before welding.

[0018] By setting a top limit detection structure on the outside of the end positioning mechanism, the starting end of the handle tube is calibrated and controlled to ensure complete positioning and calibration. Handles tubes that do not meet the requirements of each point are removed and not further processed, thus rejecting the welding of defective handle tubes from the source, improving the efficiency and quality of welded products, and avoiding the mistaken welding of defective products, which would result in a waste of manpower and resources. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the welding clamping state of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a partial three-dimensional structure on one side of this utility model.

[0022] Attached image labels:

[0023] Platform-1; Riser positioning seat-2; Base-21; Mandrel-22; Positioning hole-23; Riser clamping mechanism-3; Connecting seat-31; Connecting flange-32; Quick clamp structure-33; Positioning pin-34; Pipe positioning mechanism-4; First support seat-41; First clamp seat-42; First pressure block-43; First drive-44; First side support-45; Hinge seat-46; Hinge frame-47; End positioning mechanism-5; Second support seat-51; Second clamp seat-52; Second pressure block-53; Second drive-54; Second side support-55; Support limiting mechanism-6; Support connection part-61; Support limiting part-62; Top limit detection structure-7; Bracket-71; Limiting block-72; Reinforcing structure-8; Limiting structure-9. Detailed Implementation

[0024] To enhance understanding of this utility model, it will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1-3The present invention is a directional welding fixture, including a platform 1, a riser positioning seat 2 located in the middle of the platform 1, pipe positioning mechanisms 4 and end positioning mechanisms 5 symmetrically arranged on both sides of the riser positioning seat 2, and support and limiting mechanisms 6 symmetrically arranged on the two pipe positioning mechanisms 4. A top limit detection structure 7 is also provided on the outer side of the end positioning mechanism 5. A riser clamping mechanism 3 is also provided on one side of the riser positioning seat 2. The riser is fitted onto the riser positioning seat 2 and clamped onto the riser positioning seat 2 from one side by the riser clamping mechanism 3, ensuring that the riser is completely positioned, that is, it does not rotate or move up and down relative to the riser positioning seat 2. The riser is secured by the double-sided arrangement of the pipe positioning mechanism 4 and end positioning mechanism 5 on both sides of the riser positioning seat 2. The positioning mechanism 5 can provide positioning support and point conformity detection for the bends and ends of the handle tube. At the same time, by setting a support limiting mechanism 6 on the side of the tube positioning mechanism 4 near the riser positioning seat 2, it provides limiting support for the bends of the lower part of the handle tube and also performs conformity detection for the bend points at that position. Furthermore, a top limiting detection structure 7 is set on the outside of the end positioning mechanism 5 to perform benchmark positioning calibration detection and control for the starting end of the handle tube. This ensures the complete positioning and calibration of the handle tube. Handles that do not meet the requirements of each point are removed and not further processed, thus rejecting the welding of defective handles from the source, improving the efficiency and quality of welded products, and avoiding the mistaken welding of defective products, which would result in a waste of manpower and resources.

[0028] Specifically:

[0029] An alternative implementation, such as Figure 1-3 The riser positioning seat 2 shown includes: a base 21 fixedly connected to the platform 1 by bolts and a mandrel 22 mounted on the base 21 and adapted to fit the riser. The mandrel 22 has a positioning hole 23 perpendicular to the axis. The riser clamping mechanism 3 includes: a connecting seat 31 fixedly connected to the platform 1, a quick-clamp structure 33 mounted on the connecting seat 31, and a positioning pin 34 connecting one end of the quick-clamp structure 33. The other end of the positioning pin 34 is fitted into the positioning hole 23 and completely positions the riser on the mandrel 22 without rotating or moving up or down. The quick-clamp structure 33 is fixedly connected to the connecting seat 31 through a connecting flange 32. During installation, the riser is fitted onto the mandrel 22 in the required position, and the hole on the riser is aligned with the positioning hole 23 on the mandrel 22. Then, the handle of the quick-clamp structure 33 is turned, which drives the positioning pin 34 mounted on the top of the quick-clamp structure 33 to pass through the positioning hole of the riser and the mandrel 22 to completely position the riser.

[0030] The handle positioning mechanism 4 is located near the outer side of the bend in the handle and includes: a first support base 41, a first clamping seat 42 located on top of the first support base 41, a first pressure block 43 located above the first clamping seat 42 for clamping the handle, and a first drive 44 connected to and driving one end of the first pressure block 43. The first drive 44 is connected to one side of the first support base 41 via a first side support 45. The first side support 45 is an L-shaped structure, with one side fixedly connected to one side of the first support base 41, and the other side forming a connecting platform on one side of the first support base 41 to support and fix the first drive 44. A support limiting mechanism 6 is located on the other side of the first support base 41. The first support base 41 is an inverted T-shape and is fastened to the platform 1 by bolts. 1. A connecting limiting groove is provided at the middle position of the upper end, which is fixedly connected to the first clamp 42 by connecting bolts; the upper end of the first clamp 42 is provided with a groove for the handle tube, wherein the direction of the groove is adapted to the direction of the handle tube; a hinge support adapted to the first pressure block 43 is also provided between the first drive 44 and the first clamp 42. The hinge support includes: a hinge seat 46 and a hinge frame 47 provided above the hinge seat 46. The hinge seat 46 is fixed on the first drive 44 or the first side support 45. The hinge frame 47 is hinged to the first pressure block 43 through a hinge shaft. The first drive 44 drives the first pressure block 43 to rotate around the hinge frame 47 to press or release the handle tube; the support limiting mechanism 6 is provided on one side of the handle tube positioning mechanism 4 and extends close to the side of the upright positioning seat 2 to abut and limit the lower bending part of the handle tube.

[0031] The end positioning mechanism 5 includes: a second support base 51 fixedly connected to the platform 1 by bolts; a second clamping seat 52 fixedly connected to the top of the second support base 51 by bolts; a second pressure block 53 disposed above the second clamping seat 52 for clamping the end of the handle tube; a second drive 54 connected to and driving one end of the second pressure block 53; and a hinge support disposed in the middle of the second pressure block 53, consisting of a hinge seat 46 and a hinge frame 47. The second drive 54 is connected to one side of the second support base 51 through a second side support 55. The top limit detection structure 7 is disposed on the outside of the second support base 51 and is correspondingly disposed to the top groove of the second clamping seat 52. The second support base 51, the second clamping seat 52, the second pressure block 53, and the second side support 55 have the same structure as the first support base 41, the first clamping seat 42, the first pressure block 43, and the first side support 45.

[0032] During operation, the bent handle is placed on the handle positioning mechanism 4 and the end positioning mechanism 5. One end of the reversed handle is then aligned with the adjusted top limit detection structure 7. Visual inspection is performed to ensure that all parts of the handle are fully aligned with the clamp and the upright. If they are fully aligned, the first pressure block 43 and the second pressure block 53 on both sides are driven to press and position the handle. Then, the welding robot is started to perform welding, thereby ensuring reliable welding positioning and improving welding efficiency and quality. If the handle does not align with the clamp and the upright, the bending of the handle is not up to standard. A qualified handle is then removed and reinstalled. During installation, the quality of the handle can be effectively detected, effectively preventing unqualified handles from being used in the next welding step, thus avoiding waste of manpower and resources.

[0033] An alternative implementation, such as Figure 3 As shown: The support limiting mechanism 6 includes a support connecting part 61 and a support limiting part 62. One end of the support connecting part 61 is fixedly connected to one side of the first support base 41 by bolts or pins. The other end of the support connecting part 61 extends laterally outward along the first support base 41 and obliquely upward to connect with the support limiting part 62. The top of the support limiting part 62 is provided with a limiting groove that fits and abuts against the lower bend of the handle tube. The size and structure of the limiting groove can be determined according to the limit position tolerance of the handle tube at this position to ensure that the handle tube at this position is a qualified product within a certain range.

[0034] An alternative implementation, such as Figure 2-3 As shown: The top limit detection structure 7 includes: a bracket 71 connected to the second support base 51 and a limit block 72 disposed above the bracket 71 and abutting against the end of the handle tube. The limit block 72 is tunably connected to the bracket 71. The lower part of the bracket 71 is fixedly connected to the outer end of the second support base 51 by bolts. The upper part of the bracket 71 is offset outward relative to the lower part by a certain distance and is provided with a threaded connection hole that matches one end of the limit block 72, so that there is a certain adjustment space between the limit block 72 and the bracket 71. In normal use, the distance between the inner side of the limit block 72 and the second clamp 52 is adjusted and fixed as the positioning reference for the handle tube, and the clamping and welding are started. The top limit detection structures 7 symmetrically disposed on the other side of the second support base 51 can be used simultaneously or removed. When positioning and welding the same type of handle tube, the top limit detection structure 7 on this side, which serves as the positioning reference for the top of the handle tube, does not need to be adjusted and can be used directly. When positioning and welding different types of handle tubes, the positioning reference needs to be readjusted and calibrated.

[0035] In one optional embodiment, the bottom of the riser clamping mechanism 3, the pipe positioning mechanism 4, and the end positioning mechanism 5 is further provided with a reinforcing structure 8 and a limiting structure 9, with the limiting structure 9 fixed at a right angle to the platform on the outer side of the bottom of the riser clamping mechanism 3, the pipe positioning mechanism 4, and the end positioning mechanism 5.

[0036] The addition of reinforced structure 8 and limiting structure 9 enhances the overall support stability, structural robustness, and positioning accuracy of the fixture.

[0037] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A direction handle welding fixture, comprising a platform (1), a riser positioning seat (2) arranged in the middle of the platform (1), handle pipe positioning mechanisms (4) symmetrically arranged on both sides of the riser positioning seat (2), and end positioning mechanisms (5), characterized in that: The two pipe positioning mechanisms (4) are also symmetrically provided with support limiting mechanisms (6), the end positioning mechanism (5) is also provided with a top limiting detection structure (7) on the outside, and the riser positioning seat (2) is also provided with a riser clamping mechanism (3) on one side in front.

2. The welding fixture of claim 1, wherein: The riser positioning seat (2) includes: a mandrel (22) connected to the platform (1) on the base (21) and adapted to the riser on the base (21), the mandrel (22) having a positioning hole (23) perpendicular to the axis; the riser clamping mechanism (3) includes: a connecting seat (31) connected to the platform (1), a quick clamping structure (33) on the connecting seat (31) and a positioning pin (34) connecting one end of the quick clamping structure (33), the other end of the positioning pin (34) being adapted to the positioning hole (23), the quick clamping structure (33) being fixedly connected to the connecting seat (31) through a connecting flange (32).

3. The welding fixture of claim 1, wherein: The handle positioning mechanism (4) is located near the outside of the bend on the handle and includes: a first support base (41), a first clamp (42) located on the top of the first support base (41), a first pressure block (43) located above the first clamp (42) for clamping the handle, and a first drive (44) connected to and driving one end of the first pressure block (43). The first drive (44) is connected to one side of the first support base (41) via a first side support (45). The support limiting mechanism (6) is located on the other side of the first support base (41).

4. The welding fixture of claim 3, wherein: The first clamp (42) has a groove for fitting the handle tube at its upper end. The first drive (44) and the first clamp (42) are also provided with a hinge support for fitting the first pressure block (43). The hinge support includes a hinge seat (46) and a hinge frame (47) set above the hinge seat (46). The hinge seat (46) is fixed on the first drive (44) or the first side support (45). The hinge frame (47) is hinged to the first pressure block (43) through a hinge shaft. The first drive (44) drives the first pressure block (43) to rotate around the hinge frame (47) to press or release the handle tube.

5. The welding fixture of claim 1, wherein: The support limiting mechanism (6) is located on one side of the handle positioning mechanism (4) and extends close to the side of the riser positioning seat (2) to abut and limit the lower bend of the handle. The support limiting mechanism (6) includes a support connecting part (61) and a support limiting part (62). One end of the support connecting part (61) is connected to the first support seat (41), and the other end of the support connecting part (61) extends laterally along the first support seat (41) and is connected to the support limiting part (62). The support limiting part (62) is provided with a limiting groove that fits and abuts the lower bend of the handle.

6. The welding fixture of claim 1, wherein: The end positioning mechanism (5) includes: a second support base (51), a second clamp (52) disposed on the top of the second support base (51), a second pressure block (53) disposed above the second clamp (52) for clamping the end of the handle tube, a second drive (54) connected to and driving one end of the second pressure block (53), and a hinge support disposed in the middle of the second pressure block (53) consisting of a hinge seat (46) and a hinge frame (47). The second drive (54) is connected to one side of the second support base (51) through a second side support (55). The top limit detection structure (7) is disposed on the outside of the second support base (51) and corresponds to the top groove of the second clamp (52).

7. The welding fixture of claim 6, wherein: The top limit detection structure (7) includes: a bracket (71) connected to the second support (51) and a limit block (72) disposed above the bracket (71) and abutting the end of the handle tube. The limit block (72) is tunably connected to the bracket (71).

8. The welding fixture of claim 1, wherein: The bottom of the riser clamping mechanism (3), the pipe positioning mechanism (4) and the end positioning mechanism (5) is also provided with a reinforcing structure (8) and a limiting structure (9). The limiting structure (9) is fixed at a right angle to the platform on the outer side of the bottom of the riser clamping mechanism (3), the pipe positioning mechanism (4) and the end positioning mechanism (5).

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