A welding fixture for automotive window frames

Abstract

This utility model relates to the field of fixture technology, and provides a welding fixture for automotive window frames. The window frame has a through hole on a horizontal side wall and a groove on a corner side wall. The welding fixture includes: a support platform on which an anti-error component, a positioning component, and a clamping component are mounted; the anti-error component has a movable anti-error block, one end of which is movably inserted into the groove; the positioning component has a positioning element, one end of which passes through the through hole to provide positioning for the window frame; the clamping component has a support block and a clamping block, the support block and the clamping block are arranged opposite to each other and respectively abut against the side wall surface of the window frame to fix the window frame on the support platform; this invention achieves full automation of the window frame clamping process by integrating anti-error, positioning, and clamping functions, avoiding manual intervention, significantly improving production cycle time, ensuring high consistency in positioning and clamping status of each batch of workpieces, effectively improving welding quality stability, and reducing labor costs.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, specifically relating to a welding fixture for automotive window frames. Background Technology

[0002] When welding automotive window frames, the frames typically need to be fixed to ensure accurate welding positions, usually manually. However, manual fixing has several limitations. For example, operators are prone to errors due to fatigue or subjective judgment during clamping and positioning, leading to deviations in the assembly position of the window frame and affecting welding accuracy and product quality consistency. Furthermore, manual operation is inefficient and cannot meet the requirements of modern production lines for cycle time and automation, especially in high-volume, continuous production scenarios, where manual fixing has become a bottleneck restricting production efficiency improvements.

[0003] Specifically, manual fixing typically relies on the operator's experience to adjust the window frame's position and uses manual clamps for locking. This method is not only time-consuming, but also makes it difficult to maintain consistent clamping force, which may cause slight displacement or deformation of the window frame during welding, thus affecting the final weld quality. Furthermore, manual operation poses certain safety hazards, especially when working with welding equipment; if the fixing is not secure, it could lead to window frame loosening or even a safety accident. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is: to propose a welding fixture for automotive window frames. By integrating anti-error components, positioning components, and clamping components on a support platform, the window frame clamping process is fully automated, replacing traditional manual placement and clamping operations. This significantly shortens the clamping time per piece and increases production cycle time. Simultaneously, it avoids clamping force fluctuations caused by uneven manual operation, ensuring consistent clamping conditions for each batch of workpieces, improving welding quality stability, reducing human-machine interaction risks, enhancing operational safety, and effectively saving labor costs.

[0005] The technical solution adopted by this utility model to solve its technical problem is to propose a welding fixture for an automobile window frame, wherein the window frame has a through hole on the horizontal side wall and a groove on the side wall at the corner, and the welding fixture includes:

[0006] Support platform;

[0007] An error-proofing component is provided on the support platform and has an movably disposed error-proofing block. When the window frame is correctly placed on the support platform, one end of the error-proofing block is movably inserted into the groove. When the window frame is placed in the wrong direction or model, the error-proofing block is interfered with by the window frame and cannot be fully inserted.

[0008] A positioning component having a movable positioning element, one end of which passes through the through hole for positioning the window frame;

[0009] A clamping assembly is disposed on the support platform and has a fixed support block and a movable clamping block. The support block and the clamping block are disposed opposite to each other and abut against the side wall of the window frame, respectively, for fixing the window frame on the support platform.

[0010] The error-proofing component, the positioning component, and the clamping component are staggered and arranged in a ring along the outer contour of the window frame.

[0011] In the aforementioned welding fixture for automotive window frames, the error-proofing component further includes:

[0012] A first support base is disposed on the support platform;

[0013] A first driving component is disposed on the first support base;

[0014] A first movable block is disposed on the first driving member and connected to the output end of the first driving member, and the error-proof block is connected to the first movable block. The first movable block is used to drive the error-proof block to move.

[0015] In the aforementioned welding fixture for automotive window frames, the positioning component further includes:

[0016] A second driving component is disposed on the support platform. A second moving block is disposed at the output end of the second driving component. The positioning component is connected to the second moving block. The second driving component drives the positioning component to move through the second moving block.

[0017] In the aforementioned welding fixture for automotive window frames, a plurality of clamping components are provided on the support platform.

[0018] In the aforementioned welding fixture for automotive window frames, each of the clamping components includes:

[0019] A second support base is disposed on the support platform, and at least one of the support blocks is disposed on the second support base;

[0020] The third driving component is connected to the second support base;

[0021] A rotating rod is hinged to the second support base by a pivot pin. One end of the rotating rod is connected to the output end of the third driving member. The third driving member is used to drive the rotating rod to rotate around the pivot pin.

[0022] At least one clamping block is provided at the end of the rotating rod away from the driving member, and the rotating rod is used to drive the clamping block to move.

[0023] In the above-mentioned welding fixture for automotive window frames, the support block and the clamping block are disposed opposite to each other on both sides of the window frame in the vertical direction, and respectively abut against the outer surfaces of both sides of the window frame in the vertical direction, for fixing the window frame in the vertical direction.

[0024] In the above-mentioned welding fixture for automotive window frames, the support block and the clamping block are disposed opposite to each other on both sides of the window frame in the horizontal direction, and respectively abut against the outer surfaces of both sides of the window frame in the horizontal direction, for fixing the window frame horizontally.

[0025] In the above-mentioned welding fixture for automotive window frames, the clamping block has a first clamping part and a second clamping part. The first clamping part is movably abutted against the side wall of the window frame in the vertical direction, and the second clamping part extends downward along the end of the first clamping part and is movably abutted against the horizontal side wall adjacent to the window frame.

[0026] In the aforementioned welding fixture for automotive window frames, the support block includes:

[0027] The first support block is located at the bottom of the window frame and is disposed opposite to the first clamping part, and is used to support the vertical sidewall of the window frame;

[0028] The second support block is located on one side of the window frame in the horizontal direction and is disposed opposite to the second clamping part, and is used to support the horizontal side wall of the window frame.

[0029] In the aforementioned welding fixture for an automotive window frame, the window frame further has a through hole located on a vertical side wall, and the second support base is further provided with:

[0030] The positioning pin is movably disposed on the side of the support block and movably inserted into the through hole, and is used to assist in positioning the window frame;

[0031] The fourth driving component has a positioning pin connected to its output end, which is used to drive the positioning pin to rise and fall.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) By integrating error prevention components, positioning components and clamping components on the support platform, the window frame clamping process is fully automated, replacing the traditional manual placement and manual clamping operations, significantly shortening the clamping time of a single piece and improving the production cycle; at the same time, it avoids the fluctuation of clamping force caused by uneven manual operation force, ensuring that the clamping state of each batch of workpieces is consistent, improving the stability of welding quality, reducing the risk of human-machine interaction, improving the safety of operation, and effectively saving labor costs.

[0034] (2) By setting up error-proof components, interference judgment is made by using the insertion action of the error-proof block into the side wall groove at the corner of the window frame: when the window frame model or placement direction is correct, the error-proof block can be inserted smoothly; if there is misinstallation, the error-proof block cannot be in place due to the obstruction of the window frame structure, and the system judges the abnormality and terminates the subsequent process accordingly. This mechanism realizes the automatic verification of the assembly posture of the window frame, which can effectively prevent positioning failure, welding offset and fixture damage caused by misinstallation, and improve the fault tolerance of the production line and the consistency of the process.

[0035] (3) By arranging multiple clamping components on the outer contour of the window frame and driving the rotating rod to rotate by the third driving component, the clamping block is driven to move, thereby achieving multi-point coordinated clamping; it can apply uniform clamping force to the side wall of the window frame from different directions, effectively preventing it from shifting, warping or loosening due to thermal deformation, electric arc impact or mechanical vibration during the welding process, and significantly improving the stability and reliability of window frame clamping. Attached Figure Description

[0036] Figure 1 This is a 3D view of the window frame in this design.

[0037] Figure 2 This is a 3D view of the proposed solution.

[0038] Figure 3 yes Figure 2 A 3D view of the hidden part of the structure.

[0039] Figure 4 This is a 3D diagram of the error prevention components in this solution.

[0040] Figure 5 This is a 3D diagram of the positioning components in this solution.

[0041] Figure 6 yes Figure 3 A 3D view of the hidden part of the structure.

[0042] Figure 7 yes Figure 6 A three-dimensional view of another orientation.

[0043] Figure 8 yes Figure 7 A 3D view of the hidden part of the structure.

[0044] Figure 9 This is a 3D view of the clamping component in this solution.

[0045] In the diagram, 1 is the window frame; 2 is the perforation; 3 is the groove; 4 is the support platform; 5 is the anti-misalignment component; 6 is the anti-misalignment block; 7 is the positioning component; 8 is the positioning element; 9 is the clamping component; 10 is the support block; 11 is the clamping block; 12 is the first support base; 13 is the first driving element; 14 is the first moving block; 15 is the second driving element; 16 is the second moving block; 17 is the second support base; 18 is the third driving element; 19 is the rotating rod; 20 is the first clamping part; 21 is the second clamping part; 22 is the first support block; 23 is the second support block; 24 is the through hole; 25 is the positioning pin; and 26 is the fourth driving element. Detailed Implementation

[0046] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0047] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0048] like Figures 1 to 9 As shown, this solution includes a welding fixture for an automotive window frame. The window frame 1 has a through hole 2 on a horizontal side wall and a groove 3 on a corner side wall. The welding fixture includes: a support platform 4; and an anti-misalignment component 5, which is mounted on the support platform 4 and has a movable anti-misalignment block 6. When the window frame 1 is correctly placed on the support platform 4, one end of the anti-misalignment block 6 is movably inserted into the groove 3. When the window frame 1 is placed in the wrong direction or with the wrong model, the anti-misalignment block 6 is interfered with by the window frame 1 and cannot be fully inserted. Component 7 has a movable positioning element 8, one end of which passes through the through hole 2 to provide positioning for the window frame 1; clamping component 9 is disposed on the support platform 4 and has a fixed support block 10 and a movable clamping block 11. The support block 10 and the clamping block 11 are disposed opposite to each other and abut against the side wall of the window frame 1 to fix the window frame 1 on the support platform 4; the anti-error component 5, the positioning component 7 and the clamping component 9 are staggered and distributed in a ring along the outer contour of the window frame 1.

[0049] During operation, the operator or automated equipment places the car window frame 1 to be welded onto the support platform 4. At this time, the support block 10, which is fixedly installed on the support platform 4, provides a stable foundation support for the window frame 1 and initially defines the position of the window frame 1 on the support platform 4.

[0050] Subsequently, the error-proofing component 5 is activated. The error-proofing block 6 moves along a preset trajectory toward the groove 3 on the side wall at the corner of the window frame 1. If the window frame 1 is of the correct model and is placed in the correct orientation, the error-proofing block 6 can be successfully inserted into the groove 3 on the window frame 1, and the error-proofing verification is passed; conversely, if the window frame 1 is placed in the wrong orientation or is of the wrong model, the window frame 1 will physically interfere with the error-proofing block 6, causing the error-proofing block 6 to fail to complete the insertion action. After the control system detects this abnormal state, it immediately triggers an alarm prompt and automatically terminates all subsequent action processes, effectively preventing the incorrect window frame 1 from entering the positioning and clamping stage, fundamentally eliminating positioning deviations, fixture damage, welding defects, and even equipment safety accidents caused by the incorrect installation of the window frame 1.

[0051] After the error-proofing verification is passed, the positioning component 7 begins to operate. The positioning element 8 is precisely inserted into the through hole 2 on the horizontal side wall of the window frame 1. The through hole 2 serves as a key process positioning reference hole, forming a mating relationship with the positioning element 8 to achieve precise positioning of the window frame 1, laying the foundation for subsequent high-precision welding.

[0052] Next, the clamping assembly 9 performs a clamping operation. The movable clamping block 11 moves closer to the window frame 1, forming a counter-clamping force with the fixed support block 10. The support block 10 and the clamping block 11 respectively abut against the outer surface of the window frame 1, applying a uniform and controllable clamping force from both sides, firmly fixing the window frame 1 to the support platform 4, effectively suppressing the vibration or displacement of the window frame 1 caused by thermal deformation or arc force during welding, and ensuring the stability of the welding process.

[0053] Once the error prevention, positioning, and clamping actions are all completed and confirmed to be in place, the system issues a ready signal, and the welding equipment automatically enters the welding process to begin welding operations on window frame 1.

[0054] Compared to traditional methods relying on manual placement and clamping in existing technologies, the welding fixture in this solution achieves full automation of the entire positioning, error prevention, and clamping process. It eliminates the need for manual inspection and operation, significantly reducing clamping time per piece. This makes it suitable for high-volume, high-paced automated production lines, significantly improving production cycle time and equipment utilization. It avoids clamping force fluctuations and positioning errors caused by uneven force and positional deviations during manual operation, ensuring a highly consistent clamping state for each product, thereby effectively improving welding quality stability and product qualification rate. Through the error prevention component 5, errors in the window frame 1 are identified and intercepted in advance, preventing safety hazards caused by incorrect installation. Simultaneously, it reduces the frequency of operator intervention in the equipment operating area, lowering human-machine interaction risks and improving overall operational safety.

[0055] In summary, this welding fixture not only automates and intelligentizes the clamping process of window frame 1, but also surpasses traditional manual operation methods in multiple dimensions such as efficiency, precision, safety, and economy, and has good industrial application prospects and promotion value.

[0056] More preferably, the error prevention component 5 further includes: a first support base 12, which is disposed on the support platform 4; a first driving member 13, which is disposed on the first support base 12; a first moving block 14, which is disposed on the first driving member 13 and connected to the output end of the first driving member 13, and the error prevention block 6 is connected to the first moving block 14, and the first moving block 14 is used to drive the error prevention block 6 to move.

[0057] Once the window frame 1 is positioned on the support platform 4, the first driving component 13 activates, moving the first moving block 14 and thus propelling the error-prevention block 6 towards the groove 3. If the window frame 1's model and placement orientation are correct, the error-prevention block 6 smoothly inserts into the groove 3, and the error prevention is successful. If the window frame 1 is incorrectly placed or its model is incompatible, its structure will hinder the movement of the error-prevention block 6, causing insertion failure. The system then identifies the error and terminates the process. This error-prevention mechanism automatically identifies the model and assembly posture of the window frame 1 by checking whether the error-prevention block 6 can be successfully inserted into the groove 3. It features rapid response, accurate judgment, and high reliability. Compared to the traditional method relying on manual visual inspection, it significantly reduces the risk of incorrect assembly and missed inspections, improves the automation level of the production line and process consistency, and provides a prerequisite for subsequent high-precision positioning and stable welding. The first driving component 13 can be a motor, hydraulic cylinder, or pneumatic cylinder.

[0058] More preferably, the positioning component 7 further includes: a second driving member 15, which is disposed on the support platform 4, and a second moving block 16 is disposed at the output end of the second driving member 15. The positioning member 8 is connected to the second moving block 16, and the second driving member 15 drives the positioning member 8 to move through the second moving block 16.

[0059] Once the error-proofing component 5 confirms that the error-proofing block 6 has been fully inserted into the groove 3 and the system determines that the model and orientation of the window frame 1 are correct, the second drive component 15 is activated, driving the second moving block 16 to move smoothly along a preset trajectory, thereby driving the positioning component 8 to align and insert into the through hole 2 on the window frame 1. The positioning component 8 and the through hole 2 form a clearance fit or transition fit, restricting the degree of freedom of the window frame 1 and achieving precise positioning of the window frame 1. This positioning method has high repeatability and good stability, providing a reliable guarantee for the accuracy of the welding torch path in the subsequent automated welding process. The second drive component 15 can be a motor, hydraulic cylinder, or pneumatic cylinder.

[0060] To securely fix the window frame 1, multiple clamping components 9 are provided on the support platform 4. By correspondingly setting the clamping components 9 at multiple positions along the outer contour of the window frame 1, uniform clamping force can be applied to the side wall of the window frame 1 from different directions, effectively preventing displacement, warping or loosening due to thermal deformation, arc impact or mechanical vibration during welding, and significantly improving the stability and reliability of the window frame 1 clamping.

[0061] Multiple clamping components 9 are distributed at intervals along the outer contour of the window frame 1, with a particular focus on the welding and easily deformable areas, achieving targeted reinforcement of critical structural regions. This multi-point coordinated clamping method not only improves overall rigidity but also avoids local stress concentration, reducing elastic deformation or plastic damage to the window frame 1 caused by uneven clamping force, thereby ensuring the dimensional accuracy and geometric tolerances of the welded components.

[0062] Furthermore, each clamping component 9 can be controlled independently or operated synchronously, making it suitable for mass production of standard window frames 1, and also adaptable to different models of window frames 1 through program adjustment, exhibiting excellent process adaptability and production line flexibility. Compared to single-point or small-scale clamping structures, this solution significantly enhances the fixture's adaptability to complex contour window frames 1, improving the consistency of welding quality and the yield rate of finished products.

[0063] Meanwhile, since the window frame 1 is firmly fixed, the welding robot or welding torch can operate stably on a high-precision trajectory without having to reduce the welding speed or adjust parameters due to the vibration of the window frame 1, which further improves the welding efficiency and the uniformity of the penetration depth.

[0064] In summary, the use of multiple clamping components 9 not only enhances clamping safety and reduces quality risks during production, but also provides a solid foundation for achieving automated and intelligent welding.

[0065] More preferably, each clamping assembly 9 includes: a second support base 17 disposed on the support platform 4, wherein at least one support block 10 is disposed on the second support base 17; a third driving member 18 connected to the second support base 17; a rotating rod 19 hinged to the second support base 17 by a pivot pin, one end of the rotating rod 19 being connected to the output end of the third driving member 18, the third driving member 18 being used to drive the rotating rod 19 to rotate around the pivot pin; at least one clamping block 11 is disposed at the end of the rotating rod 19 away from the driving member, the rotating rod 19 being used to drive the clamping block 11 to move. The third driving member 18 may be a motor, a hydraulic cylinder, or a pneumatic cylinder.

[0066] During operation, once the window frame 1 is placed on the support platform 4 and precisely positioned, the third drive component 18 of each clamping assembly 9 is activated, driving the rotating rod 19 to rotate around the pivot pin, thereby causing the clamping block 11 to move closer to the window frame 1. After the clamping block 11 contacts the outer surface of the window frame 1, pressure continues to be applied until a stable opposing clamping force is formed together with the support block 10 on the opposite side, firmly fixing the window frame 1 to the support platform 4.

[0067] This clamping method amplifies and reverses force through a lever mechanism, resulting in a compact structure and rapid response, making it suitable for automated production lines. Multiple clamping components work in tandem to effectively suppress thermal deformation and vibration during welding, ensuring consistent welding quality and dimensional accuracy.

[0068] In one embodiment, the support block 10 and the clamping block 11 are disposed opposite to each other on both sides of the window frame 1 in the vertical direction, and respectively abut against the outer surfaces of both sides of the window frame 1 in the vertical direction, so as to apply opposing clamping force to the window frame 1 in the vertical direction to achieve fixation.

[0069] In another embodiment, the support block 10 and the clamping block 11 are disposed opposite to each other on both sides of the window frame 1 in the horizontal direction, and respectively abut against the outer surfaces of both sides of the window frame 1 in the horizontal direction, for fixing the window frame 1 in the horizontal direction.

[0070] In another embodiment, the clamping block 11 has a first clamping part 20 and a second clamping part 21. The first clamping part 20 is movably abutted against the side wall of the window frame 1 in the vertical direction, and the second clamping part 21 extends downward along the end of the first clamping part 20 and abuts against the horizontal side wall adjacent to the window frame 1.

[0071] Correspondingly, the support block 10 includes: a first support block 22, which is disposed opposite to the first clamping part 20 and is used to support the vertical sidewall of the window frame 1; and a second support block 23, which is disposed opposite to the second clamping part 21 and is used to support the horizontal sidewall of the window frame 1.

[0072] The first clamping part 20 and the first support block 22 clamp the vertical side wall, and the second clamping part 21 and the second support block 23 clamp the horizontal side wall, effectively restricting the degree of freedom of the window frame 1 and preventing it from shifting or twisting during the welding process.

[0073] The window frame 1 also has a through hole 24 located on the vertical side wall. The second support 17 is also provided with: a positioning pin 25, which is movably disposed on the side of the support block 10 and movably inserted into the through hole 24, for auxiliary positioning of the window frame 1; and a fourth drive member 26, with the positioning pin 25 connected to the output end of the fourth drive member 26, for driving the positioning pin 25 to rise and fall.

[0074] During operation, the window frame 1 is first positioned by inserting the positioning element 8 from the positioning assembly 7 into the through hole 2 on the horizontal side wall of the window frame 1. Subsequently, the fourth drive element 26 is activated, driving the positioning pin 25 to insert into the through hole 24 on the vertical side wall, further restricting the rotational freedom of the window frame 1. At this time, the third drive element 18 is activated, and the clamping block 11 moves towards the side wall of the window frame 1, applying clamping force together with the opposite support block 10. After clamping is completed, the welding equipment enters the working state. The fourth drive element 26 can be a motor, hydraulic cylinder, or pneumatic cylinder.

[0075] In this utility model, the terms "first," "second," "a," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0077] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A welding fixture for an automotive window frame having a perforation on a horizontal side wall and a groove on a side wall at a corner, characterized by, The welding fixture includes: Support platform; An error-proofing component is provided on the support platform and has an movably disposed error-proofing block. When the window frame is correctly placed on the support platform, one end of the error-proofing block is movably inserted into the groove. When the window frame is placed in the wrong direction or model, the error-proofing block is interfered with by the window frame and cannot be fully inserted. A positioning component having a movable positioning element, one end of which passes through the through hole for positioning the window frame; A clamping assembly is disposed on the support platform and has a fixed support block and a movable clamping block. The support block and the clamping block are disposed opposite to each other and abut against the side wall of the window frame, respectively, for fixing the window frame on the support platform. The error-proofing component, the positioning component, and the clamping component are staggered and arranged in a ring along the outer contour of the window frame.

2. The welding fixture for an automobile window frame according to claim 1, wherein The error prevention component also includes: A first support base is disposed on the support platform; A first driving component is disposed on the first support base; A first movable block is disposed on the first driving member and connected to the output end of the first driving member, and the error-proof block is connected to the first movable block. The first movable block is used to drive the error-proof block to move.

3. The welding fixture for an automobile window frame according to claim 1, wherein The positioning component also includes: A second driving component is disposed on the support platform. A second moving block is disposed at the output end of the second driving component. The positioning component is connected to the second moving block. The second driving component drives the positioning component to move through the second moving block.

4. The welding fixture for an automobile window frame according to claim 1, wherein The support platform is provided with a plurality of clamping components.

5. The welding fixture for an automobile window frame as described in claim 4, characterized in that, Each of the clamping components includes: A second support base is disposed on the support platform, and at least one of the support blocks is disposed on the second support base; The third driving component is connected to the second support base; A rotating rod is hinged to the second support base by a pivot pin. One end of the rotating rod is connected to the output end of the third driving member. The third driving member is used to drive the rotating rod to rotate around the pivot pin. At least one clamping block is provided at the end of the rotating rod away from the driving member, and the rotating rod is used to drive the clamping block to move.

6. The welding fixture for an automobile window frame according to claim 1, wherein The support block and the clamping block are disposed opposite to each other on both sides of the window frame in the vertical direction, and respectively abut against the outer surfaces of both sides of the window frame in the vertical direction, for fixing the window frame in the vertical direction.

7. The welding fixture for an automobile window frame according to claim 1, wherein The support block and the clamping block are disposed opposite to each other on both sides of the window frame in the horizontal direction, and respectively abut against the outer surfaces of both sides of the window frame in the horizontal direction, for fixing the window frame horizontally.

8. The welding fixture for an automobile window frame as described in claim 1, characterized in that, The clamping block has a first clamping part and a second clamping part. The first clamping part is movably abutted against the side wall of the window frame in the vertical direction. The second clamping part extends downward along the end of the first clamping part and is movably abutted against the horizontal side wall adjacent to the window frame.

9. The welding fixture for an automotive window frame of claim 8, wherein, The support block includes: The first support block is located at the bottom of the window frame and is disposed opposite to the first clamping part, and is used to support the vertical sidewall of the window frame; The second support block is located on one side of the window frame in the horizontal direction and is disposed opposite to the second clamping part, and is used to support the horizontal side wall of the window frame.

10. The welding fixture for an automotive window frame as set forth in claim 5, said window frame further having a through hole located on the vertical side wall, wherein, The second support base is also provided with: The positioning pin is movably disposed on the side of the support block and movably inserted into the through hole, and is used to assist in positioning the window frame; The fourth driving component has a positioning pin connected to its output end, which is used to drive the positioning pin to rise and fall.

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