Automobile door lock welding fixture with positioning structure

Abstract

This utility model relates to a welding fixture for automotive door locks with a positioning structure, belonging to the technical field of welding fixtures. It includes an inclined base plate with a mounting platform on it. A door lock is placed on the mounting platform. A first cylinder, fixedly connected to the base plate, is located above the mounting platform. A first piston rod, reciprocatingly moving, is located at the bottom of the first cylinder. A positioning block, fixedly connected to one side of the mounting platform, is also located on one side of the positioning block, which is fixedly connected to the base plate. The top of the positioning block has a raised annular positioning part. The bottom of the door lock, near the positioning block, has a recessed positioning groove that abuts against the positioning part. In this design, the positioning block structure next to the mounting platform ensures that the door lock is placed in the same position on the mounting platform each time it is placed, facilitating subsequent welding and improving production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixture technology, and relates to a welding fixture for automotive door locks with a positioning structure. Background Technology

[0002] During the production of car door locks, the door lock is welded to the bottom locking ring. In order to improve welding efficiency and the yield rate, there is a welding fixture in the prior art. The base plate of the fixture is tilted upward at a 60-degree angle. A mounting platform for placing the door lock is set on the fixture. After the door lock is placed on the mounting platform, the top cylinder extends and retracts downward to fix the door lock on the mounting platform for subsequent welding processes.

[0003] However, existing welding fixtures still have some shortcomings. In order to facilitate the movement of the welding torch to the mounting table for welding the door lock, the base plate of the fixture and the mounting table are set at an angle. Therefore, during the process of placing the door lock on the mounting table, the door lock is prone to sliding and misalignment, making it impossible to place the door lock stably in the desired position. Frequent adjustments are required during the clamping process, which reduces welding efficiency. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing a welding fixture for automotive door locks with a positioning structure. The technical problem to be solved by this utility model is: how to quickly place the door lock into a specific clamping position.

[0005] The objective of this utility model can be achieved through the following technical solution: A welding fixture for automotive door locks with a positioning structure includes an inclined base plate, a mounting platform on the base plate, a door lock placed on the mounting platform, a first cylinder fixedly connected to the base plate above the mounting platform, a first piston rod reciprocating at the bottom of the first cylinder, a positioning block fixedly connected to one side of the mounting platform, one side of the positioning block fixedly connected to the base plate, a raised annular positioning part at the top of the positioning block, and a positioning groove recessed towards the center on the bottom side of the door lock near the positioning block, the positioning groove being able to abut and fit against the positioning part.

[0006] In this solution, the mounting platform is used to place the door locks to be processed. The side of the door lock with the positioning groove is aligned with the positioning block. When the positioning groove and the positioning part are in contact, the positioning part can abut against the bottom of the door lock, so that the door lock can be stably placed on the mounting platform. Then, the first cylinder is opened, and the first cylinder drives the first piston rod to move down, clamping the door lock to be processed on the mounting platform. Through the above method, the structure of the positioning block is set next to the mounting platform. When the positioning groove on the door lock abuts against the corresponding positioning part, the door lock can be placed in the same position on the mounting platform every time it is placed, which facilitates subsequent welding processing and improves production efficiency.

[0007] In the aforementioned automotive door lock welding fixture with a positioning structure, a fixed base is provided on the base plate, a second cylinder is fixedly connected to the base plate at the bottom of the fixed base, and several integrally connected folding parts are provided on the top of the door lock. A second piston rod is provided on the top of the second cylinder, and a limiting block is fixedly connected to the top of the second piston rod. One side of the folding part is located between the limiting block and the fixed base. The second cylinder can drive the limiting block to move up and down. The fixed base and the limiting block are used to clamp the folding parts of the door lock, preventing the angle of the door lock from shifting and making the door lock more stably clamped on the mounting table.

[0008] In the aforementioned automotive door lock welding fixture with a positioning structure, the bottom of the fixing seat is provided with a downwardly protruding snap-fit ​​portion, which can abut against the outer wall of the folding portion. During the placement of the door lock, after the positioning groove on the door lock is engaged with the positioning portion, the folding portion on one side can also abut against the snap-fit ​​portion at the bottom of the fixing seat, making it easier to adjust the door lock to the desired position.

[0009] In the aforementioned automotive door lock welding fixture with a positioning structure, the top of the limiting block is provided with an upwardly protruding pin. Both the pin and the end of the first piston rod are provided with guide portions. The end of the guide portion near the door lock is thinner. The bottom and folding portion of the door lock are provided with insertion holes, allowing the guide portion to be inserted into these holes respectively. The thinner end of the guide portion near the door lock facilitates insertion into the insertion hole, preventing the door lock from failing to insert during clamping due to positional deviation.

[0010] In the aforementioned automotive door lock welding fixture with a positioning structure, the mounting platform and the fixing base are provided with circular through holes, which are respectively located directly below the insertion hole. After the guide part is inserted into the insertion hole, it can continue to be inserted into the through hole. After passing through the insertion hole, the guide part can continue to move downward into the through hole, making the clamping more stable.

[0011] In the aforementioned automotive door lock welding fixture with a positioning structure, the bottom of the limiting block is provided with a fixed slider, and the slider has a fixed sliding part on the side near the base plate. The base plate has a fixed slide rail, and the sliding part is slidably connected to the slide rail. The slider can reciprocate along the direction of the slide rail. The structure of the slide rail and slider is used to support the limiting block, enabling the limiting block to stably reciprocate and clamp the folding part.

[0012] In the aforementioned automotive door lock welding fixture with a positioning structure, the bottom of the door lock is provided with several mounting holes. The mounting holes are used to insert a lock ring, allowing the door lock and lock ring to be welded together.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this solution, a positioning block structure is set next to the mounting platform. When the positioning groove on the door lock abuts against the corresponding positioning part, the door lock can be placed in the same position on the mounting platform every time it is placed, which facilitates subsequent welding processing and improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0017] Figure 3 yes Figure 2 A magnified schematic diagram of the local structure;

[0018] Figure 4 This is a top view of the door lock and positioning block of this utility model.

[0019] Figure 5 This is a bottom view of the door lock and fixing base of this utility model.

[0020] In the diagram, 1 is the base plate; 2 is the mounting platform; 2a is the positioning block; 2a1 is the positioning part; 3 is the door lock; 3a is the folding part; 3b is the positioning groove; 3c is the insertion hole; 3d is the mounting hole; 4 is the first cylinder; 4a is the first piston rod; 5 is the fixed seat; 5a is the snap-fit ​​part; 6 is the second cylinder; 6a is the second piston rod; 6b is the limit block; 6b1 is the pin; 6c is the slider; 6c1 is the sliding part; 7 is the slide rail; 8 is the through hole; and 9 is the guide part. Detailed Implementation

[0021] 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.

[0022] Example

[0023] like Figure 1 As shown, a welding fixture for automotive door locks with a positioning structure includes an inclined base plate 1, a door lock 3 placed on a mounting platform 2, a first cylinder 4 fixedly connected to the base plate 1 above the mounting platform 2, a first piston rod 4a reciprocatingly moving at the bottom of the first cylinder 4, a fixed seat 5 fixedly connected to the base plate 1, a second cylinder 6 fixedly connected to the base plate 1 at the bottom of the fixed seat 5, a second piston rod 6a fixedly connected to the top of the second cylinder 6, and a limiting block 6b fixedly connected to the top of the second piston rod 6a.

[0024] like Figure 2 Combination Figure 3As shown, the base plate 1 is provided with a mounting platform 2, and a positioning block 2a is fixedly connected to one side of the mounting platform 2. One side of the positioning block 2a is fixedly connected to the base plate 1. The top of the door lock 3 is provided with several integrally connected folding parts 3a. One side of the folding part 3a is located between the limiting block 6b and the fixing seat 5. The bottom of the limiting block 6b is provided with a fixed slider 6c. The slider 6c is provided with a fixed sliding part 6c1 on the side near the base plate 1. The base plate 1 is provided with a fixed slide rail 7. The sliding part 6c1 is slidably connected to the slide rail 7. The bottom of the first piston rod 4a is provided with a guide part 9.

[0025] As shown in the figure Figure 4 As shown, the top of the positioning block 2a is provided with a raised annular positioning part 2a1, and the bottom of the door lock 3 is provided with a positioning groove 3b recessed towards the center on the side near the positioning block 2a. The positioning groove 3b can abut and fit against the positioning part 2a1. The bottom of the door lock 3 is provided with an insertion hole 3c and several mounting holes 3d. The mounting platform 2 is provided with a through hole 8.

[0026] As shown in the figure Figure 5 As shown, the bottom of the fixing base 5 is provided with a downward protruding snap-fit ​​part 5a, which can abut against the outer wall of the folding part 3a. The top of the limiting block 6b is provided with an upward protruding pin 6b1, and the top of the pin 6b1 is also provided with a guide part 9. The end of the guide part 9 near the door lock 3 is thinner. The fixing base 5 is also provided with a through hole 8. After the guide part 9 is inserted into the insertion hole 3c, it can continue to be inserted into the through hole 8.

[0027] The working principle of this solution is as follows: Figure 1-5 As shown, align the side of the door lock 3 with the positioning groove 3b with the positioning block 2a. When the positioning groove 3b fits into the positioning part 2a1, the positioning part 2a1 can abut against the bottom of the door lock 3. At the same time, the folding part 3a on one side can also abut against the snap-fit ​​part 5a at the bottom of the fixing seat 5, so that the door lock 3 is stably placed on the mounting platform 2. At this time, the insertion hole 3c at the bottom of the door lock 3 is connected to the through hole 8 on the mounting platform 2, and the insertion hole 3c on the folding part 3a is connected to the through hole 8 on the fixing seat 5. Then, start the first cylinder 4 and the second cylinder 6. The first piston rod 4a moves downward, the guide part 9 at the bottom inserts into the insertion hole 3c and continues to move downward to insert into the through hole 8, fixing the bottom of the door lock 3 on the mounting platform 2. The second piston rod 6a pushes the limiting block 6b to move upward. The pin 6b1 at the top of the limiting block 6b inserts from the bottom into the insertion hole 3c on the folding part 3a, and then moves upward to insert into the through hole 8 on the fixing seat 5, so that the folding part 3a is clamped. During the clamping process described above, the door lock 3 can be easily placed in a specific position, improving welding efficiency.

[0028] 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.

[0029] Although this document frequently uses terms such as 1. base plate; 2. mounting platform; 2a. positioning block; 2a1. positioning part; 3. door lock; 3a. folding part; 3b. positioning groove; 3c. insertion hole; 3d. mounting hole; 4. first cylinder; 4a. first piston rod; 5. fixed seat; 5a. snap-fit ​​part; 6. second cylinder; 6a. second piston rod; 6b. limiting block; 6b1. pin; 6c. slider; 6c1. sliding part; 7. slide rail; 8. through hole; 9. guide part, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A welding fixture for a car door lock with a positioning structure, comprising an inclined base plate (1), a mounting platform (2) on the base plate (1), a door lock (3) placed on the mounting platform (2), a first cylinder (4) fixedly connected to the base plate (1) above the mounting platform (2), and a reciprocating first piston rod (4a) at the bottom of the first cylinder (4), characterized in that, The mounting platform (2) has a fixed positioning block (2a) on one side. One side of the positioning block (2a) is fixed to the base plate (1). The top of the positioning block (2a) has a raised annular positioning part (2a1). The bottom of the door lock (3) has a positioning groove (3b) recessed towards the center on the side of the positioning block (2a). The positioning groove (3b) can abut against and fit against the positioning part (2a1).

2. The automobile door lock welding fixture with positioning structure according to claim 1, characterized in that, The base plate (1) is provided with a fixed seat (5) fixedly connected to it. The bottom of the fixed seat (5) is provided with a second cylinder (6) fixedly connected to the base plate (1). The top of the door lock (3) is provided with several integrally connected folding parts (3a). The top of the second cylinder (6) is provided with a second piston rod (6a). The top of the second piston rod (6a) is provided with a fixed limiting block (6b). The folding part (3a) on one side is located between the limiting block (6b) and the fixed seat (5).

3. The automotive door lock welding fixture with a positioning structure according to claim 2, characterized in that, The bottom of the fixing seat (5) is provided with a downward protruding snap-fit ​​part (5a), which can abut against the outer wall of the folding part (3a).

4. The automotive door lock welding fixture with a positioning structure according to claim 2, characterized in that, The top of the limiting block (6b) is provided with an upward protruding pin (6b1). The pin (6b1) and the end of the first piston rod (4a) are both provided with guide portions (9). The end of the guide portion (9) near the door lock (3) is thinner. The bottom of the door lock (3) and the folding part (3a) are provided with insertion holes (3c). The guide portion (9) can be inserted into the insertion holes (3c) respectively.

5. The automotive door lock welding fixture with positioning structure according to claim 4, characterized in that, The mounting platform (2) and the fixing base (5) are provided with circular through holes (8). The through holes (8) are respectively located directly below the insertion hole (3c). After the guide part (9) is inserted into the insertion hole (3c), it can continue to be inserted into the through hole (8).

6. The automobile door lock welding fixture with positioning structure according to claim 2, characterized in that, The bottom of the limiting block (6b) is provided with a fixed slider (6c), and the slider (6c) is provided with a fixed sliding part (6c1) on the side near the base plate (1). The base plate (1) is provided with a fixed slide rail (7), and the sliding part (6c1) is slidably connected to the slide rail (7).

7. The automobile door lock welding fixture with positioning structure according to claim 1, characterized in that, The bottom of the door lock (3) is provided with several mounting holes (3d).

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