Anti-deformation welding jig

Abstract

The utility model discloses an anti-deformation welding jig. The welding jig comprises a base plate, a welding rod and a welding rod, the number of the main positioning assemblies is multiple, each main positioning assembly comprises a main support, a lifting mechanism and a main positioning block, the main supports are installed on the base plate, the lifting mechanisms are connected to the main supports and drive the main positioning blocks to ascend and descend vertically, and the main positioning blocks are provided with vertically-upward positioning pins; the number of the auxiliary positioning assemblies is multiple, each auxiliary positioning assembly comprises an auxiliary support and an auxiliary positioning block, the auxiliary supports are installed on the base plate, and the auxiliary positioning blocks are connected to the auxiliary supports; the number of the limiting assemblies is multiple, the limiting assemblies are provided with movable pressing blocks, and each pressing block is provided with a moving path abutting against the auxiliary positioning block. Compared with the prior art, even if the step pitch difference exists between the lifting mechanisms, the position of the welding workpiece is not changed during demolding, so that the welding workpiece is not subjected to any external force during demolding, and deformation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to the anti-deformation welding fixture. BACKGROUND

[0002] The prior application with the publication number CN220993299U provides a technology that can flexibly adjust fixture positioning parameters, and the prior application does not rely on manual demolding of the welded workpiece, but completes the demolding through a demolding mechanism. The demolding mechanism is provided with a movable demolding part, and the positioning surface of the workpiece is located within the movable range of the demolding part. After the workpiece is completed, all the limiting components drive the pressing blocks to reset, and then the demolding mechanism drives the demolding part to move towards the workpiece until the workpiece is demolded upward from the positioning components.

[0003] However, with the rise of new energy vehicles, the sunroof guide rail of the new energy vehicle tends to adopt a narrow track design. This design not only reduces the material usage, but also reduces the wind resistance, which meets the development trend of lightweight and high efficiency of new energy vehicles. Figure 1 As shown in the figure, it is a sunroof frame with a narrow track design, and the frame width is narrow, which leads to poor anti-deformation ability. If the demolding technology of the prior application with the publication number CN220993299U is still used, once there is a step difference between multiple demolding parts, the sunroof frame with a narrow track design will deform due to uneven stress. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide an anti-deformation welding fixture to reduce the risk of deformation of the welded workpiece during demolding.

[0005] The anti-deformation welding fixture according to the first aspect of the utility model comprises:

[0006] a base plate;

[0007] a main positioning assembly, the number of which is multiple, each of which comprises a main support, a lifting mechanism and a main positioning block, the main support is installed on the base plate, the lifting mechanism is connected to the main support and drives the main positioning block to ascend and descend, the main positioning block is provided with a vertical upward positioning pin, and all the main positioning blocks jointly form a main positioning surface for supporting the workpiece to be welded;

[0008] a vice positioning assembly, the number of which is multiple, each of which comprises a vice support and a vice positioning block, the vice support is installed on the base plate, and the vice positioning block is connected to the vice support, and all the vice positioning blocks jointly form a vice positioning surface for supporting the workpiece to be welded;

[0009] The plurality of limiting assemblies are provided with movable pressing blocks, and each pressing block has an abutting surface for abutting against the moving path of the secondary positioning block.

[0010] The anti-deformation welding jig has at least the following beneficial effects: before welding, an operator places bulk welding plates on the primary positioning surface and the secondary positioning surface to form a workpiece to be welded, the workpiece to be welded is provided with a plurality of positioning holes matched with the positioning pins, so that the initial positioning of the workpiece to be welded is achieved, then the plurality of limiting assemblies press the workpiece to be welded in the initial positioning state, so that the workpiece to be welded does not deviate in the subsequent welding process, after the welding is completed, all the limiting assemblies are reset, and all the lifting mechanisms drive the corresponding primary positioning blocks to descend, so that the positioning pins and the positioning holes, and the primary positioning surface and the welding workpiece are separated, at this time, the welding workpiece is only supported on the secondary positioning surface, and the operator can easily take out the welding workpiece; compared with the prior art, even if there is a step difference between the lifting mechanisms, the position of the welding workpiece does not change when demolding, so that the welding workpiece is not subjected to any external force when demolding, thereby avoiding deformation, and because the demolding part is omitted, the operation space reserved for the welding robot is larger, and more complex and variable welding processes can be coped with.

[0011] According to some embodiments of the utility model, the plurality of secondary supports are connected with positioning rods, and the positioning rods are used for positioning the edges of the workpiece to be welded. Although each welding plate is provided with two positioning holes, the size of the positioning holes may have a size deviation, so the edges of each welding plate are positioned by the positioning rods in addition to being positioned by the two positioning pins.

[0012] According to some embodiments of the utility model, the anti-deformation welding jig further comprises a plurality of sensing sensors, and all the sensing sensors have a sensing direction towards the workpiece to be welded. When any one of the sensing sensors senses that the workpiece to be welded is not placed in place, the welding system will report an error to the outside, so as to prevent the welding jig and the welding robot from being damaged due to inaccurate positioning during welding.

[0013] According to some embodiments of the utility model, the plurality of sensing sensors are electrically connected with a control center, the control center is provided with coordinate mappings associated with all the sensing sensors one by one, and each coordinate mapping reflects the working condition of the corresponding sensing sensor in real time. The sensing sensor generally has two working conditions, one is a green working condition in which the workpiece to be welded is detected to be placed in place, and the other is a red working condition in which the workpiece to be welded is detected to be not placed in place. As long as the red working condition appears on any one of the coordinate mappings, the control center will report an error to the outside.

[0014] According to some embodiments of the present application, the control center is provided with a display screen, the display screen displays the change of the coordinate mapping through pixel points, and an operator can intuitively observe the specific error position from the display screen to help the operator quickly find the problem on the welding fixture.

[0015] According to some embodiments of the present application, the limiting assembly comprises a telescopic cylinder, a rotating frame and the pressing block, the telescopic cylinder is fixedly connected to the auxiliary support, the rotating frame is rotatably connected to the auxiliary support, the telescopic part of the telescopic cylinder is upwardly hinged to the rotating frame, and a plurality of the pressing blocks are connected to the rotating frame.

[0016] According to some embodiments of the present application, in order to prevent the welding current from being shunted, the main positioning block, the positioning pin, the auxiliary positioning block and the pressing block are all coated with an insulating layer.

[0017] According to some embodiments of the present application, in order to facilitate replacement of different welding fixtures, the bottom of the base plate is connected with a roller.

[0018] According to some embodiments of the present application, the bottom of the base plate is provided with a bottom plate, and the bottom plate is connected with a lifting mechanism for lifting the base plate.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0021] Figure 1 is a perspective structural schematic view of a to-be-welded workpiece provided by an embodiment of the present application;

[0022] Figure 2 is a perspective structural schematic view of a deformation-preventing welding fixture provided by an embodiment of the present application;

[0023] Figure 3 is Figure 2 is a front view of the deformation-preventing welding fixture shown in FIG.

[0024] Figure 4 is Figure 2A top view of the anti-deformation welding jig shown;

[0025] Figure 5 It is the three-dimensional structure schematic view of the main positioning assembly provided in the embodiment of the utility model;

[0026] Figure 6 It is the three-dimensional structure schematic view of the auxiliary positioning assembly provided in the embodiment of the utility model.

[0027] In the drawing: 100 - substrate, 200 - main positioning assembly, 300 - auxiliary positioning assembly, 400 - limiting assembly, 500 - workpiece to be welded, 210 - main support, 220 - lifting mechanism, 230 - main positioning block, 231 - positioning pin, 240 - fixed block, 310 - auxiliary support, 320 - auxiliary positioning block, 510 - welding plate, 520 - positioning hole, 330 - positioning rod, 410 - telescopic cylinder, 420 - rotating frame, 430 - pressing block, 600 - induction sensor, 110 - roller, 700 - bottom plate, 710 - lifting mechanism. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0029] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right and the like, is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as limiting the utility model.

[0030] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are included in the number. If it is described to the first, the second is only used for distinguishing the purpose of technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0031] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0032] AsFigures 1 to 4 As shown, the anti-deformation welding jig according to the first aspect embodiment of the utility model, it includes substrate 100, multiple main positioning assembly 200, multiple vice positioning assembly 300 and multiple limiting assembly 400, substrate 100 as the reference of all components, its upper surface is connected with main positioning assembly 200 and vice positioning assembly 300, because the workpiece to be welded 500 is rectangular frame structure, therefore multiple main positioning assembly 200 and multiple vice positioning assembly 300 are all arranged along the shape of workpiece to be welded 500. Main positioning assembly 200 and vice positioning assembly 300 are commonly used for positioning support to workpiece to be welded 500, and limiting assembly 400 is used for compacting workpiece to be welded 500 in the positioning state, so as to avoid the situation that workpiece to be welded 500 appears weld point deviation in the welding process. Because different specifications of workpiece to be welded 500 need to be configured with different number and different position main positioning assembly 200, vice positioning assembly 300 and limiting assembly 400, therefore the utility model does not limit the number and distribution position of main positioning assembly 200, vice positioning assembly 300 and limiting assembly 400, and the person skilled in the art can set the number and distribution position of main positioning assembly 200, vice positioning assembly 300 and limiting assembly 400 according to design drawing.

[0033] It can be understood that limiting assembly 400 can be connected to substrate 100, and can also be connected to vice positioning assembly 300, because limiting assembly 400 and vice positioning assembly 300 complement each other, therefore the technical scheme that limiting assembly 400 is arranged in vice positioning assembly 300 can effectively reduce the production cost of welding jig.

[0034] As Figure 5As shown, the main positioning assembly 200 includes a main support 210, a lifting mechanism 220, and main positioning blocks 230. The substrate 100 is provided with a first screw hole at a specified position, and the bottom of the main support 210 is provided with a first mounting hole corresponding to the first screw hole, and the two are fixedly connected by a bolt. The lifting mechanism 220 includes, but is not limited to, a cylinder, an oil cylinder, a linear push rod, and the like. In this embodiment, the lifting mechanism 220 is preferably a cylinder. The lifting mechanism 220 is fixedly connected to the upper portion of the main support 210, and the main support 210 is used to support and fix the position of the lifting mechanism 220. The lifting rod of the lifting mechanism 220 is connected to the main positioning blocks 230. The top surface of the main positioning blocks 230 is provided with a positioning pin 231 vertically upward. The top surfaces of all the main positioning blocks 230 together form a main positioning surface for supporting the workpiece 500 to be welded. When the lifting mechanism 220 receives a downward command, it drives the lifting rod to move downward and drives the main positioning blocks 230 and the positioning pins 231 to move downward together, thereby changing the relative position between the main positioning surface and the substrate 100. When the lifting mechanism 220 receives an upward command, it drives the lifting rod to move upward and drives the main positioning blocks 230 and the positioning pins 231 to move upward together, thereby changing the relative position between the main positioning surface and the substrate 100.

[0035] It should be noted that the main positioning blocks 230 are composed of a plurality of connecting portions and a plurality of mesons. The structure thereof can refer to the welding jig with the publication number CN220993299U, so as to meet the positioning requirements of different workpieces 500 to be welded, reduce the number of molds of the welding jig, and achieve the purpose of reducing production costs.

[0036] Further, the main support 210 is provided with a fixed block 240 above the lifting mechanism 220. When the lifting mechanism 220 drives the main positioning blocks 230 to move upward to abut against the fixed block 240, the main positioning blocks 230 cannot be continuously lifted because the position of the fixed block 240 is fixed, thereby limiting the upper limit position of the main positioning blocks 230. This is beneficial to realize the resetting of the main positioning blocks 230 and thereby eliminates the position detection of the main positioning blocks 230.

[0037] As shown in FIG. 2, the main positioning assembly 200 is provided with a plurality of main positioning blocks 230, and the main positioning blocks 230 are arranged in a staggered manner. Figure 6As shown, the sub-positioning assembly 300 comprises a sub-support 310 and a sub-positioning block 320, the substrate 100 is provided with a second screw hole at a designated position, the bottom of the sub-support 310 is provided with a second mounting hole corresponding to the second screw hole, and the two are fixedly connected through a bolt. The sub-positioning block 320 is connected to the sub-support 310, and the sub-support 310 is used to support and fix the position of the sub-positioning block 320. Since the sub-positioning block 320 is not provided with a positioning pin 231, the sub-positioning block 320 only provides positioning for the workpiece to be welded 500 through the upper surface, and therefore a plurality of sub-positioning blocks 320 can be connected to one sub-support 310. No matter how many sub-positioning blocks 320 are connected to the sub-support 310, the top surfaces of all the sub-positioning blocks 320 together form a sub-positioning surface for supporting the workpiece to be welded 500, and the sub-positioning surface and the reset main positioning surface together support the workpiece to be welded 500. When the main positioning surface is driven to descend by the lifting mechanism 220, only the sub-positioning surface supports the workpiece to be welded 500 at this time.

[0038] As shown in Figure 1 , Figure 4 and Figure 6 , the workpiece to be welded 500 is composed of four welding plates 510, although each welding plate 510 is positioned and placed in two positioning pins 231 through two positioning holes 520, but the hole diameter of the positioning hole 520 can have a size deviation. Once the hole diameter of the two positioning holes 520 of the welding plate 510 has a size deviation, the position of the welding plate 510 on the main positioning surface is not unique, so in addition to being positioned by the two positioning pins 231, the edge of each welding plate 510 also needs to be positioned by the positioning rod 330. Since the position of the sub-positioning assembly 300 relative to the substrate 100 is fixed and does not change, it is preferred to connect the positioning rod 330 to the sub-support 310. Through the above arrangement, before welding, the operator needs to slightly move the welding plate 510 in addition to positioning and placing the welding plate 510 in the two positioning pins 231, so that the edge of the welding plate 510 can abut against the positioning rod 330, thereby meeting the initial positioning requirement of the workpiece to be welded 500.

[0039] It can be understood that since each welding plate 510 is positioned and placed in two positioning pins 231 through two positioning holes 520, and the workpiece to be welded 500 is a frame structure composed of four welding plates 510, only one main positioning assembly 200 needs to be arranged at each of the four corners of the frame structure to meet the hole positioning requirement of the workpiece to be welded 500. The remaining positions of the workpiece to be welded 500 are positioned by the sub-positioning assembly 300, but it must be ensured that at least one sub-positioning assembly 300 is arranged corresponding to each welding plate 510. In this embodiment, there is a case where three sub-positioning assemblies 300 are arranged corresponding to one welding plate 510, and for this case, the sub-positioning assembly 300 located in the middle can not be provided with a positioning rod 330 to avoid positioning interference.

[0040] As shown in Figure 6 The limiting assembly 400 is not independently arranged on the base plate 100, and the limiting assembly 400 needs to be attached to the sub-positioning assembly 300 at this time. Specifically, each limiting assembly 400 includes a telescopic cylinder 410, a rotating frame 420, and a pressing block 430. The telescopic cylinder 410 includes but is not limited to a gas cylinder, an oil cylinder, a linear push rod, and other linear telescopic devices, which is preferably a gas cylinder in this embodiment. The telescopic cylinder 410 is fixedly connected to the corresponding sub-bracket 310. The rotating frame 420 is rotatably connected to the corresponding sub-bracket 310. The rotating frame 420 is located above the telescopic cylinder 410. The telescopic part of the telescopic cylinder 410 is upwardly hinged to the rotating frame 420. The rotating frame 420 is connected with a plurality of pressing blocks 430. Each pressing block 430 has an abutting path to the sub-positioning block 320. When the telescopic part of the telescopic cylinder 410 extends upward, the rotating frame 420 inwardly turns close to the workpiece 500 to be welded until the pressing block 430 and the sub-positioning block 320 jointly abut against the workpiece 500 to be welded, so as to limit the workpiece 500 to be welded. When the telescopic part of the telescopic cylinder 410 retracts downward, the rotating frame 420 outwardly turns away from the workpiece 500 to be welded, and the pressing block 430 moves away from the sub-positioning block 320, so as to release the limitation of the workpiece 500 to be welded.

[0041] It can be understood that since the sub-bracket 310 is used to lift and fix the position of the sub-positioning block 320, the sub-bracket 310 reserves a certain height to install the telescopic cylinder 410. The number of the pressing blocks 430 of each limiting assembly 400 needs to be determined according to the design drawing, and the number of the pressing blocks 430 can be less than the number of the sub-positioning blocks 320. For example, assuming that a sub-positioning assembly 300 is provided with two sub-positioning blocks 320, the number of the corresponding pressing blocks 430 of the limiting assembly 400 can be one or two.

[0042] In some embodiments, the limiting assembly 400 is independently arranged on the base plate 100. Specifically, each limiting assembly 400 comprises a limiting support (not shown in the drawings), a telescopic cylinder 410, a rotating frame 420 and a pressing block 430. The telescopic cylinder 410 comprises but is not limited to a pneumatic cylinder, an oil cylinder, a linear telescopic device, etc. In the present embodiment, the telescopic cylinder 410 is preferably a pneumatic cylinder. The limiting support is mounted on the base plate 100, the telescopic cylinder 410 is fixedly connected to the limiting support, the rotating frame 420 is rotatably connected to the limiting support, the rotating frame 420 is located above the telescopic cylinder 410, the telescopic part of the telescopic cylinder 410 is upwardly hinged to the rotating frame 420, and the rotating frame 420 is connected with a plurality of pressing blocks 430. Each pressing block 430 has an abutting path to the secondary positioning block 320. When the telescopic part of the telescopic cylinder 410 is extended upwardly, the rotating frame 420 is inwardly turned to approach the workpiece 500 until the pressing block 430 and the secondary positioning block 320 jointly abut against the workpiece 500 to limit the workpiece 500. When the telescopic part of the telescopic cylinder 410 is retracted downwardly, the rotating frame 420 is outwardly turned to move away from the workpiece 500, and the pressing block 430 moves away from the secondary positioning block 320 to release the workpiece 500.

[0043] It can be understood that, since the limiting assembly 400 is independently arranged, the telescopic cylinder 410 can press the secondary positioning block 320 of the secondary positioning assembly 300 by controlling the plurality of pressing blocks 430, thereby reducing the number of telescopic cylinders 410.

[0044] In some embodiments of the present application, the distance between the clamp and the welding point is more than 3mm during welding, which can effectively reduce the shunt path of the current through the clamp, thereby ensuring that the welding current is concentrated on the welding point area. In order to prevent the welding current from being shunted, the primary positioning block 230, the positioning pin 231, the secondary positioning block 320 and the pressing block 430 are coated with an insulating layer. In the present embodiment, the insulating layer can be selected from epoxy resin spray paint, polyurethane elastic spray paint or Teflon spray paint.

[0045] With the above structure, before welding, the operator places the bulk welding plates 510 on the main positioning surface and the auxiliary positioning surface at the same time to form the welding workpiece 500, and the welding workpiece 500 is provided with a plurality of positioning holes 520 matched with the positioning pins 231, so as to satisfy the initial positioning of the welding workpiece 500, and then the plurality of limiting assemblies 400 press the welding workpiece 500 in the initial positioning state, so as to prevent the welding workpiece 500 from being deviated in the subsequent welding process. After the welding is completed, all the limiting assemblies 400 are reset, and all the lifting mechanisms 220 drive the corresponding main positioning blocks 230 to descend, so as to realize the separation of the positioning pins 231 and the positioning holes 520 and the main positioning surface and the welding workpiece, at this time, the welding workpiece is only supported on the auxiliary positioning surface, and the operator can easily take out the welding workpiece. Compared with the prior art, even if there is a step difference between each lifting mechanism 220, the position of the welding workpiece does not change when demolding, so the welding workpiece will not be subjected to any external force when demolding, thereby avoiding deformation. Moreover, since the demolding part is omitted, the operation space reserved for the welding robot is larger, and more complex and variable welding processes can be coped with.

[0046] As shown in Figure 3 and Figure 6 The plurality of auxiliary supports 310 are connected with inductive sensors 600, which include but are not limited to photoelectric sensors and proximity switches and the like, and all the inductive sensors 600 have an inductive direction towards the welding workpiece 500. The inductive sensors 600 are not only used for detecting the existence of the welding workpiece 500, but also for detecting whether the welding workpiece 500 is placed in place. Taking the proximity switch as an example, the inductive proximity switch utilizes the electromagnetic induction principle, when a metal object approaches, an eddy current is generated inside the metal, causing the amplitude of the oscillation circuit to change, and the change of the amplitude of the oscillation circuit is associated with the distance between the proximity switch and the metal object. That is to say, when the welding workpiece 500 is not placed in place, by comparing the detection data at this time with the detection data after being placed in place, it can be determined whether the welding workpiece 500 is placed in place at the corresponding position.

[0047] Once the welding workpiece 500 is not placed in place, not only will it cause inaccurate positioning, but also it is easy to damage the welding jig and the welding robot. In order to prevent such accidents, a plurality of inductive sensors 600 are arranged below the welding workpiece 500 to detect whether the welding workpiece 500 is placed in place. As long as one inductive sensor 600 detects that the welding workpiece 500 is not placed in place at the corresponding position, the control center (not shown in the figure) blocks the control right of the operator and sends an alarm to the outside, and the operator must place the welding workpiece 500 in place before performing the next welding process. However, since the number of inductive sensors 600 is large, the operator must check one by one each time an error occurs, which is low in work efficiency and high in work intensity.

[0048] To reduce the operator's workload, the control center is equipped with a coordinate mapping system that is one-to-one with all the sensing sensors 600. Each coordinate mapping reflects the real-time operating status of the corresponding sensing sensor 600. The sensing sensors 600 generally have two operating states: a green state indicating that the workpiece 500 to be welded is in place, and a red state indicating that the workpiece 500 is not in place. If a red state appears on any coordinate mapping, the control center will issue an error report. To visually represent the changes in the coordinate mapping, in this embodiment, the control center is equipped with a display screen (not shown in the attached diagram). The display screen shows the changes in the coordinate mapping using pixels, allowing the operator to visually observe the specific error location and quickly locate the problem on the welding fixture.

[0049] In other embodiments, multiple light-emitting diodes (LEDs) (not shown in the figures) can be used instead of a display screen, with each LED positioned next to a corresponding sensor 600. If the sensor 600 detects that the workpiece 500 to be welded is not in place at the corresponding position, the sensor 600 sends a detection signal to the control center, which then causes the corresponding LED to emit red light. If the sensor 600 detects that the workpiece 500 to be welded is in place, the sensor 600 sends a detection signal to the control center, which then causes the corresponding LED to emit green light. Ultimately, the operator only needs to adjust the workpiece 500 to be welded based on the position of the red light.

[0050] Of course, the sensing sensor 600 may also be independently mounted on the substrate 100 without being attached to the sub-support 310, and is not limited to the above embodiment.

[0051] like Figure 2 and Figure 3 As shown, in some embodiments of this utility model, since each welding fixture can only position and support workpieces with similar positioning dimensions, if different types of workpieces are welded at one welding station, different welding fixtures need to be changed at that welding station. To facilitate the replacement of different welding fixtures, rollers 110 are connected to the bottom of the base plate 100, allowing the operator to replace different welding fixtures without the aid of any auxiliary tools.

[0052] Further, the bottom plate 700 is arranged below the substrate 100, and the lifting mechanism 710 for lifting the substrate 100 is connected to the bottom plate 700, wherein the lifting mechanism 710 includes but is not limited to a pneumatic cylinder, an oil cylinder, a linear push rod, and the like linear extension device, and in the embodiment, the lifting mechanism 710 is preferably a pneumatic cylinder. When the welding jig is moved to the predetermined welding station, the operator controls the lifting mechanism 710 to lift the substrate 100, so as to fix the position of the welding jig by moving the rollers 110 away from the ground. When it is necessary to move the welding jig, the operator controls the lifting mechanism 710 to lower the substrate 100, so as to move the position of the welding jig by moving the rollers 110 to contact the ground again.

[0053] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. An anti-deformation welding fixture, characterized in that, include: substrate(100); There are multiple main positioning components (200). Each main positioning component (200) includes a main support (210), a lifting mechanism (220), and a main positioning block (230). The main support (210) is mounted on the base plate (100). The lifting mechanism (220) is connected to the main support (210) and drives the main positioning block (230) to move up and down. The main positioning block (230) is provided with a vertically upward positioning pin (231). All the main positioning blocks (230) together form a main positioning surface for supporting the workpiece (500) to be welded. Multiple sub-positioning components (300) are provided. Each sub-positioning component (300) includes a sub-support (310) and a sub-positioning block (320). The sub-support (310) is mounted on the base plate (100), and the sub-positioning block (320) is connected to the sub-support (310). All sub-positioning blocks (320) together form a sub-positioning surface for supporting the workpiece (500) to be welded. The limiting components (400) are provided in multiple quantities, each of the limiting components (400) is provided with a movable clamping block (430), and each clamping block (430) has a moving path that abuts against the sub-positioning block (320).

2. The anti-deformation welding fixture according to claim 1, characterized in that: Each of the sub-supports (310) is connected to a positioning rod (330), which is used to position the edge of the workpiece (500) to be welded.

3. The anti-deformation welding fixture according to claim 1, characterized in that: It also includes multiple sensing sensors (600), all of which have a sensing direction toward the workpiece (500) to be welded.

4. The anti-deformation welding fixture according to claim 3, characterized in that: Multiple sensing sensors (600) are electrically connected to a control center. The control center has a coordinate mapping associated with each of the sensing sensors (600) in real time. Each coordinate mapping reflects the working condition of the corresponding sensing sensor (600) in real time.

5. The anti-deformation welding fixture according to claim 4, characterized in that: The control center is equipped with a display screen, which shows the changes in the coordinate mapping through pixels.

6. The anti-deformation welding fixture according to claim 1, characterized in that: The limiting component (400) includes a telescopic cylinder (410), a rotating frame (420), and a pressing block (430). The telescopic cylinder (410) is fixedly connected to the sub-support (310), and the rotating frame (420) is rotatably connected to the sub-support (310). The telescopic part of the telescopic cylinder (410) is hinged to the rotating frame (420) with its telescopic part facing upward. A plurality of pressing blocks (430) are connected to the rotating frame (420).

7. The anti-deformation welding fixture according to claim 1, characterized in that: The main positioning block (230), positioning pin (231), secondary positioning block (320) and clamping block (430) are all coated with an insulating layer.

8. The anti-deformation welding fixture according to claim 1, characterized in that: The bottom of the substrate (100) is connected to a roller (110).

9. The anti-deformation welding fixture according to claim 8, characterized in that: A base plate (700) is provided below the substrate (100), and a lifting mechanism (710) for lifting the substrate (100) is connected to the base plate (700).

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