Instrument support welding fixture

Abstract

The utility model discloses an instrument support welding fixture, including support seat, fixed base and first clamping mechanism, support seat is used for placing instrument bracket, and the upside of support seat is provided with positioning protrusion, and positioning protrusion can be matched with instrument bracket and is connected, the fixed base sets up in support seat one side, and the side of fixed base close to support seat is provided with positioning arm, and positioning arm can be matched with support frame and is connected, first clamping mechanism is connected in fixed base, and first clamping mechanism can draw support frame to the side of fixed base. The utility model can reduce the shaking of support frame and instrument bracket, improve the positioning accuracy between support frame and instrument bracket.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle manufacturing technology, and in particular to a welding fixture for an instrument bracket. Background Technology

[0002] The motorcycle instrument panel bracket is a core component connecting the frame and the instrument panel. It is typically made of metal or high-strength engineering plastics and primarily serves to fix, support, and protect the instrument panel, while also providing a clear viewing angle. Metal instrument panel brackets offer superior structural strength and maintain good reliability even after prolonged use. A motorcycle instrument panel bracket generally consists of a support frame and an instrument panel bracket. During production, the support frame and instrument panel bracket need to be positioned before being welded together manually or using automated welding equipment. However, using existing tools makes it difficult to reliably position the support frame and instrument panel bracket. During welding, the support frame and instrument panel bracket are prone to wobbling, causing positional changes and resulting in the overall dimensions of the welded instrument panel bracket not meeting requirements, leading to a low yield rate. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an instrument bracket welding fixture, which can reduce the shaking between the support frame and the instrument bracket and improve the positioning accuracy between the support frame and the instrument bracket.

[0004] A welding fixture for an instrument bracket according to an embodiment of the present utility model includes: The support is used to place the instrument bracket. The upper side of the support is provided with a positioning protrusion that can be matched and connected with the instrument bracket. A fixed base is provided on one side of the support base. A positioning arm is provided on the side of the fixed base near the support base. The positioning arm can be matched and connected to the support frame. The first clamping mechanism is connected to the fixed base and is capable of pulling the support frame to one side of the fixed base.

[0005] A welding fixture for an instrument bracket according to an embodiment of the present utility model has at least the following beneficial effects: The instrument bracket is placed on the support base, with the third positioning hole engaging with the periphery of the positioning protrusion, achieving rapid positioning and fixation of the instrument bracket. Then, the support frame is placed above the instrument bracket, and pushed towards the positioning arm, using the positioning arm to match and position the second connecting arm of the support frame. The first clamping mechanism pulls the support frame to one side of the fixed base, making the support frame fit snugly against the fixed base. Then, the first clamping mechanism continues to apply force to the side of the support frame away from the fixed base, creating an interaction force between the support frame and the fixed base, thus clamping and fixing the support frame. The instrument bracket is quickly positioned and fixed by the third positioning hole engaging with the positioning protrusion of the instrument bracket. The second connecting arm of the support frame is matched and positioned by the positioning arm, and the support frame is clamped and fixed by the first clamping mechanism engaging with the fixed base, thus achieving the positioning and clamping fixation of the support frame. It is easy to operate and can reliably position the support frame and the instrument bracket, reduce the shaking of the support frame and the instrument bracket, improve the positioning accuracy between the support frame and the instrument bracket, improve the dimensional consistency of the instrument bracket after welding, improve the yield of the instrument bracket after welding, and improve the structural reliability of the instrument bracket after welding.

[0006] According to an embodiment of the present invention, an instrument bracket welding fixture includes a first clamping mechanism comprising a first cylinder and a clamping block. The clamping block is connected to the piston rod of the first cylinder. The first cylinder is fixedly connected to one side of a fixed base, and the clamping block is movably disposed on the other side of the fixed base.

[0007] According to an embodiment of the present invention, a welding fixture for an instrument bracket has a through hole in the fixed base, and the piston rod of the first cylinder is movably inserted through the through hole.

[0008] According to an embodiment of the present invention, a welding fixture for an instrument bracket has a fixed base with a plurality of first positioning pins and a clamping block with a plurality of positioning grooves, wherein the plurality of first positioning pins and the plurality of positioning grooves are matched and movably connected in a one-to-one correspondence.

[0009] According to an embodiment of the present invention, an instrument bracket welding fixture includes a first clamping mechanism that further includes a second cylinder, a first connecting block, and a plurality of second positioning pins. The second cylinder is disposed on one side of the fixed base, the first connecting block is fixedly connected to the piston rod of the second cylinder, and the plurality of second positioning pins are fixedly connected to the first connecting block. The fixed base is provided with a plurality of first positioning holes, and the plurality of second positioning pins are matched and movably connected to the plurality of first positioning holes one by one.

[0010] According to an embodiment of the present utility model, a welding fixture for an instrument bracket is provided with a plurality of clearance holes corresponding to a plurality of second positioning pins, and the plurality of second positioning pins and the plurality of clearance holes are provided one-to-one.

[0011] According to an embodiment of the present invention, an instrument bracket welding fixture includes a first clamping mechanism that further includes a second connecting block, wherein a first cylinder and a second cylinder are respectively fixedly connected to opposite sides of the second connecting block.

[0012] According to an embodiment of the present invention, a welding fixture for an instrument bracket is provided in which a second connecting block is provided with a plurality of second positioning holes corresponding to a plurality of second positioning pins, and the plurality of second positioning pins and the plurality of second positioning holes are matched and connected in a one-to-one manner.

[0013] According to an embodiment of the present invention, an instrument bracket welding fixture has a positioning arm comprising a first arm and a second arm, which are detachably connected.

[0014] According to an embodiment of the present invention, an instrument bracket welding fixture is provided with a connecting groove on the first arm and a connecting protrusion on the second arm, wherein the connecting groove and the connecting protrusion can be matched and engaged.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of an instrument bracket welding fixture according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the loosened state of an instrument bracket welding fixture, support frame, and instrument bracket according to an embodiment of the present utility model; Figure 3 This is a structural schematic diagram of the clamping state of an instrument bracket welding fixture, support frame, and instrument bracket according to an embodiment of the present utility model; Figure 4 This is an exploded view of the structure of a welding fixture for an instrument bracket according to an embodiment of the present utility model; Figure 5 This is a structural diagram of the support frame and instrument bracket.

[0017] Explanation of reference numerals in the attached figures: Base plate 100; Support 200; First movable block 210; Positioning protrusion 220; Second movable block 230; Fixed block 240; Fixed base 300; positioning arm 310; first arm portion 311; connecting groove 312; second arm portion 313; connecting protrusion 314; through hole 320; first positioning pin 330; first positioning hole 340; First clamping mechanism 400; first cylinder 410; clamping block 420; positioning groove 421; clearance hole 422; second cylinder 430; first connecting block 440; second positioning pin 450; second connecting block 460; second positioning hole 461; Second clamping mechanism 500; Third clamping mechanism 600; Support frame 700; First connecting arm 710; Second connecting arm 720; Mounting hole 730; Instrument bracket 800; third positioning hole 810. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 device 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.

[0020] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Motorcycle instrument brackets generally consist of two parts: a support frame 700 and an instrument bracket 800. (Refer to...) Figure 5 ( Figure 5(This is a structural diagram of the support frame 700 when it is separated from the instrument bracket 800). The support frame 700 includes two first connecting arms 710 and one second connecting arm 720. Each of the two first connecting arms 710 has a mounting hole 730 at the end away from the second connecting arm 720. The mounting hole 730 is used to connect with the motorcycle frame.

[0023] When manufacturing motorcycle instrument brackets, the support frame 700 and the instrument bracket 800 need to be combined, then the combined support frame 700 and instrument bracket 800 need to be positioned, and then the connection between the support frame 700 and the instrument bracket 800 is welded manually or using automated welding equipment. However, it is difficult to reliably position the support frame 700 and the instrument bracket 800 using existing tools. During the welding process, the support frame 700 and the instrument bracket 800 are prone to shaking, causing positional changes between them. This results in the overall dimensions of the welded instrument bracket not meeting the requirements, leading to a low yield rate.

[0024] Reference Figures 1 to 4 This utility model provides an instrument bracket welding fixture, including a base plate 100, a support 200, a fixing base 300, and a first clamping mechanism 400. The support 200 is mounted on the upper side of the base plate 100 and is used to place an instrument bracket 800. A positioning protrusion 220 is provided on the upper side of the support 200, which can be matched and connected with the instrument bracket 800. Specifically, a third positioning hole 810 is provided on the instrument bracket 800, which can be matched and connected with the positioning protrusion 220. When the instrument bracket 800 is placed on the support 200, the third positioning hole 810 is fitted onto the periphery of the positioning protrusion 220 to achieve quick positioning and fixation of the instrument bracket 800.

[0025] A mounting base 300 is installed on the upper side of the base plate 100 and is located on one side of the support base 200. A positioning arm 310 is provided on the side of the mounting base 300 near the support base 200. The positioning arm 310 can be matched and connected with the support frame 700. Specifically, the positioning arm 310 protrudes from one side of the mounting base 300 and can be matched and connected with the second connecting arm 720 of the support frame 700. After the instrument bracket 800 is placed on the support base 200, the support frame 700 can be placed on top of the instrument bracket 800, and then the support frame 700 can be pushed towards the positioning arm 310, which can be used to match and position the second connecting arm 720.

[0026] The first clamping mechanism 400 is connected to the fixed base 300 and can pull the support frame 700 to one side of the fixed base 300. Specifically, the first clamping mechanism 400 can apply a force to the side of the support frame 700 away from the fixed base 300, pulling the support frame 700 to one side of the fixed base 300 and making it fit against the fixed base 300. Then, the first clamping mechanism 400 continues to apply a force to the side of the support frame 700 away from the fixed base 300. This facilitates pulling the support frame 700 to the fixed base 300 for positioning, and the cooperation between the first clamping mechanism 400 and the fixed base 300 can also clamp and fix the support frame 700.

[0027] The instrument bracket 800 is placed on the support 200. During placement, the third positioning hole 810 is engaged with the periphery of the positioning protrusion 220 to achieve quick positioning and fixation of the instrument bracket 800. Then, the support frame 700 is placed above the instrument bracket 800, and the support frame 700 is pushed towards the positioning arm 310, which matches and positions the second connecting arm 720 of the support frame 700. The first clamping mechanism 400 pulls the support frame 700 to one side of the fixed seat 300, making the support frame 700 fit against the fixed seat 300. Then, the first clamping mechanism 400 continues to apply force to the side of the support frame 700 away from the fixed seat 300, so that an interaction force is generated between the support frame 700 and the fixed seat 300, thereby clamping and fixing the support frame 700. The quick positioning and fixation of the instrument bracket 800 is achieved by the third positioning hole 810 cooperating with the positioning protrusion 220 of the instrument bracket 800. The second connecting arm 720 of the support frame 700 is matched and positioned by the positioning arm 310, and the support frame 700 is clamped and fixed by the first clamping mechanism 400 cooperating with the fixed seat 300, thus realizing the positioning and clamping fixation of the support frame 700. This method is convenient to operate and can reliably position the support frame 700 and the instrument bracket 800, reducing shaking between them, improving the positioning accuracy, enhancing the dimensional consistency of the welded instrument bracket, and increasing the yield rate of the welded instrument bracket.

[0028] According to some embodiments of this application, refer to Figures 1 to 4The first clamping mechanism 400 includes a first cylinder 410 and a clamping block 420. The clamping block 420 is connected to the piston rod of the first cylinder 410. The first cylinder 410 is fixedly connected to one side of the fixed base 300, and the clamping block 420 is movably disposed on the other side of the fixed base 300. The piston rod of the first cylinder 410 is connected to the clamping block 420 after bypassing the fixed base 300. The first cylinder 410 and the clamping block 420 are respectively disposed on both sides of the fixed base 300. The first cylinder 410 can drive the clamping block 420 to move closer to or away from the fixed base 300. When the support frame 700 is placed above the instrument bracket 800, the two first connecting arms 710 of the support frame 700 are extended between the fixed seat 300 and the clamping block 420. Then, the clamping block 420 can be driven by the first cylinder 410 to move towards the two first connecting arms 710, and finally the two first connecting arms 710 are clamped between the fixed seat 300 and the clamping block 420.

[0029] Furthermore, referring to Figure 4 The fixed base 300 is provided with a through hole 320, and the piston rod of the first cylinder 410 is movably inserted through the through hole 320. Specifically, the through hole 320 and the piston rod of the first cylinder 410 are connected with a clearance fit. The through hole 320 can be used to limit the radial movement of the piston rod of the first cylinder 410 (see reference). Figure 1 The piston rod of the first cylinder 410 moves more precisely and smoothly in the front-back direction (with the front-back direction as the axial direction), thereby making the clamping block 420 move more precisely and smoothly in the front-back direction.

[0030] Furthermore, referring to Figure 4 The fixed base 300 is fixedly provided with multiple first positioning pins 330, and the clamping block 420 is provided with multiple positioning grooves 421. The multiple first positioning pins 330 and the multiple positioning grooves 421 are matched and movably connected in a one-to-one correspondence. Specifically, a first positioning pin 330 is fixedly provided on each of the left and right sides of the fixed base 300, and a positioning groove 421 is provided on each of the left and right ends of the clamping block 420. The two positioning grooves 421 are slidably connected to the two first positioning pins 330 in a one-to-one correspondence, thereby limiting the clamping block 420 in the left-right and up-down directions, so that the clamping block 420 can move more accurately and smoothly in the front-back direction.

[0031] According to some embodiments of this application, refer to Figures 1 to 4The first clamping mechanism 400 further includes a second cylinder 430, a first connecting block 440, and multiple second positioning pins 450. The second cylinder 430 is disposed on one side of the fixed base 300. The first connecting block 440 is fixedly connected to the piston rod of the second cylinder 430, and the multiple second positioning pins 450 are fixedly connected to the first connecting block 440. The fixed base 300 is provided with multiple first positioning holes 340, and the multiple second positioning pins 450 are matched and movably connected to the multiple first positioning holes 340 in a one-to-one correspondence. Specifically, the fixed base 300 is provided with a first positioning hole 340 at each of its left and right ends, and the two first positioning holes 340 are respectively provided with two mounting holes 730 of the support frame 700 in a one-to-one correspondence. Specifically, the piston rod of the second cylinder 430, the first connecting block 440, and the two second positioning pins 450 are connected in sequence, and the second cylinder 430 can drive the two second positioning pins 450 to move in the front-back direction through the first connecting block 440. Specifically, the first positioning hole 340 and the corresponding second positioning pin 450 are connected with clearance fit. The two corresponding first positioning holes 340 limit the radial movement of the two second positioning pins 450, allowing the two second positioning pins 450 to move more accurately and smoothly in the front-back direction. When the two first connecting arms 710 are placed between the fixed base 300 and the clamping block 420, the second cylinder 430 drives the two second positioning pins 450 to move forward. Under the limitation of the two first positioning holes 340, the two second positioning pins 450 are respectively inserted into the two mounting holes 730, thereby positioning the two first connecting arms 710. When the fixed base 300 and the clamping block 420 cooperate to clamp the two first connecting arms 710, the two second positioning pins 450 can limit the movement of the two first connecting arms 710, preventing the support frame 700 from changing position during the clamping process.

[0032] Specifically, both the first cylinder 410 and the second cylinder 430 are double-acting linear cylinders. The piston rod of the first cylinder 410 is located on the front side of the first cylinder 410 body, and the piston rod of the second cylinder 430 is located on the rear side of the second cylinder 430 body.

[0033] Furthermore, referring to Figure 4 The clamping block 420 is provided with multiple clearance holes 422 corresponding to the multiple second positioning pins 450, and the multiple second positioning pins 450 and multiple clearance holes 422 are provided one-to-one. Specifically, there are also two clearance holes 422 corresponding to two second positioning pins 450. After the two second positioning pins 450 are respectively inserted into the two mounting holes 730, they can extend into the two corresponding clearance holes 422, so as to avoid mutual interference between the second positioning pins 450 and the clamping block 420.

[0034] Furthermore, referring to Figure 4The first clamping mechanism 400 also includes a second connecting block 460, and the first cylinder 410 and the second cylinder 430 are respectively fixedly connected to opposite sides of the second connecting block 460. Specifically, the first cylinder 410, the second connecting block 460, and the second cylinder 430 are fixedly connected sequentially from front to back. This improves the compactness of the first clamping mechanism 400.

[0035] Furthermore, referring to Figure 4 The second connecting block 460 is provided with multiple second positioning holes 461 corresponding to multiple second positioning pins 450. The multiple second positioning pins 450 and the multiple second positioning holes 461 are matched and connected in a one-to-one manner. Specifically, each of the left and right ends of the second connecting block 460 is provided with a second positioning hole 461, and the two second positioning holes 461 are respectively fitted with two second positioning pins 450 with a clearance fit. The two corresponding second positioning holes 461 limit the radial movement of the two second positioning pins 450, further improving the accuracy and stability of the movement of the two second positioning pins 450 in the front-back direction.

[0036] According to some embodiments of this application, refer to Figure 4 The positioning arm 310 includes a first arm portion 311 and a second arm portion 313, which are detachably connected. Specifically, the first arm portion 311 is horizontally positioned in the front-rear direction, and the second arm portion 313 is obliquely upward positioned from the front end of the first arm portion 311. The obliquely positioned second arm portion 313 is used to position the support frame 700 and also facilitates the removal and replacement of the second arm portion 313 from the first arm portion 311 to meet the welding needs of instrument brackets of various sizes.

[0037] Furthermore, referring to Figure 4 The first arm 311 is provided with a connecting groove 312, and the second arm 313 is provided with a connecting protrusion 314. The connecting groove 312 and the connecting protrusion 314 can be matched and engaged. The matching of the connecting protrusion 314 and the connecting groove 312 enables quick disassembly and quick connection, improving the convenience of replacing the second arm 313.

[0038] It is understood that in some other embodiments, reference is made to... Figure 4The support 200 includes a fixed block 240, a first movable block 210, and a second movable block 230. Both the first movable block 210 and the second movable block 230 are located on the upper side of the fixed block 240 and are detachably connected to the fixed block 240. Specifically, the fixed block 240 is fixedly connected to the base plate 100, and two slots are provided on the upper side of the fixed block 240. Both the first movable block 210 and the second movable block 230 are I-shaped structures, and can be respectively connected to the two slots on the upper side of the fixed block 240. This facilitates the disassembly and replacement of the first movable block 210 and the second movable block 230 to meet the welding needs of instrument brackets of different sizes.

[0039] It is understood that in some other embodiments, reference is made to... Figures 1 to 4 It also includes a second clamping mechanism 500 and a third clamping mechanism 600, which are respectively disposed on both sides of the support 200. Specifically, both the second clamping mechanism 500 and the third clamping mechanism 600 are lever cylinders. By using the second clamping mechanism 500 and the third clamping mechanism 600 to press down on the instrument bracket 800 placed above the support 200 from both sides of the support 200, the clamping and fixing effect on the instrument bracket 800 is improved.

[0040] Specifically, the first cylinder 410, the second cylinder 430, the second clamping mechanism 500 and the third clamping mechanism 600 are respectively connected to different solenoid valves (not shown in the figure), and these different solenoid valves are respectively electrically connected to the control module (not shown in the figure).

[0041] Working principle: Before starting work, first confirm that the instrument bracket welding fixture is in the correct position. Figure 1 In the loosened state shown, the instrument bracket 800 is placed on the support 200. During placement, the third positioning hole 810 is fitted onto the periphery of the positioning protrusion 220 to achieve quick positioning and fixation of the instrument bracket 800. Then, the support frame 700 is placed above the instrument bracket 800. The two first connecting arms 710 of the support frame 700 are extended between the fixing seat 300 and the clamping block 420. The support frame 700 is then pushed towards the positioning arm 310, using the positioning arm 310 to match and position the second connecting arm 720 of the support frame 700. Figure 2The process is as follows: First cylinder 410 drives clamping block 420 to move towards the two first connecting arms 710, ultimately clamping the two first connecting arms 710 between the fixed base 300 and clamping block 420; second cylinder 430 drives two second positioning pins 450 forward, inserting them into the two mounting holes 730 respectively, thus positioning the two first connecting arms 710; finally, second clamping mechanism 500 and third clamping mechanism 600 press the instrument bracket 800 downwards on both sides of the support base 200, achieving positioning and clamping fixation of the support frame 700 and the instrument bracket 800. Figure 3 As shown. Finally, the connection between the support frame 700 and the instrument bracket 800 is welded using manual or automated welding equipment.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding fixture for an instrument bracket, characterized in that, include: A support (200) is used to place an instrument bracket (800). A positioning protrusion (220) is provided on the upper side of the support (200). The positioning protrusion (220) can be matched and connected with the instrument bracket (800). A fixing seat (300) is provided on one side of the support seat (200). A positioning arm (310) is provided on the side of the fixing seat (300) near the support seat (200). The positioning arm (310) can be matched and connected to the support frame (700). A first clamping mechanism (400) is connected to the fixed base (300), and the first clamping mechanism (400) can pull the support frame (700) to one side of the fixed base (300).

2. The instrument bracket welding fixture according to claim 1, characterized in that, The first clamping mechanism (400) includes a first cylinder (410) and a clamping block (420). The clamping block (420) is connected to the piston rod of the first cylinder (410). The first cylinder (410) is fixedly connected to one side of the fixed seat (300), and the clamping block (420) is movably disposed on the other side of the fixed seat (300).

3. The instrument bracket welding fixture according to claim 2, characterized in that, The fixed seat (300) is provided with a through hole (320), and the piston rod of the first cylinder (410) is movably inserted through the through hole (320).

4. The instrument bracket welding fixture according to claim 3, characterized in that, The fixed base (300) is fixedly provided with a plurality of first positioning pins (330), and the clamping block (420) is provided with a plurality of positioning grooves (421). The plurality of first positioning pins (330) and the plurality of positioning grooves (421) are matched and connected in a one-to-one correspondence.

5. The instrument bracket welding fixture according to claim 2, characterized in that, The first clamping mechanism (400) further includes a second cylinder (430), a first connecting block (440), and a plurality of second positioning pins (450). The second cylinder (430) is disposed on one side of the fixed seat (300). The first connecting block (440) is fixedly connected to the piston rod of the second cylinder (430). The plurality of second positioning pins (450) are fixedly connected to the first connecting block (440). The fixed seat (300) is provided with a plurality of first positioning holes (340). The plurality of second positioning pins (450) are matched and movably connected to the plurality of first positioning holes (340) one by one.

6. The instrument bracket welding fixture according to claim 5, characterized in that, The clamping block (420) is provided with a plurality of clearance holes (422) corresponding to the plurality of second positioning pins (450), and the plurality of second positioning pins (450) and the plurality of clearance holes (422) are provided one-to-one.

7. A welding fixture for an instrument bracket according to claim 5 or 6, characterized in that, The first clamping mechanism (400) further includes a second connecting block (460), and the first cylinder (410) and the second cylinder (430) are respectively fixedly connected to opposite sides of the second connecting block (460).

8. The instrument bracket welding fixture according to claim 7, characterized in that, The second connecting block (460) is provided with a plurality of second positioning holes (461) corresponding to a plurality of second positioning pins (450), and the plurality of second positioning pins (450) and the plurality of second positioning holes (461) are matched and connected in a one-to-one manner.

9. The instrument bracket welding fixture according to claim 1, characterized in that, The positioning arm (310) includes a first arm (311) and a second arm (313), which are detachably connected.

10. A welding fixture for an instrument bracket according to claim 9, characterized in that, The first arm (311) is provided with a connecting groove (312), and the second arm (313) is provided with a connecting protrusion (314). The connecting groove (312) and the connecting protrusion (314) can be matched and engaged.

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