Front hood lock mounting guide positioning tool

Abstract

The utility model relates to the technical field of automobile processing and manufacturing, disclose a front machine cover lock installation direction positioning frock, including frock body, four positioning mechanisms are arranged on the frock body, the guide clamping mechanism is arranged in the frock body. The utility model discloses four positioning mechanisms of rectangular array distribution, the negative pressure adsorption is generated with the help of the air pressure in the adjusting sucking disc, the front machine cover lock is fixed firmly in the preset position of the vehicle body, and the clamping groove of the guide clamping mechanism is completely matched with the shape of the front machine cover lock, the lock body can be fixed in the shape surface laminating mode, the permanent magnet can further adsorb the lock body, prevents the lock body from falling in the installation process, and through the rotation limiting bolt, the position of clamping plate can be adjusted, and then the space height and horizontal position of clamping groove are changed, further fixed, simultaneously adapt to the front machine cover lock installation depth of different vehicle models, the size difference of lock body, need not to customize frock for each vehicle model.

Description

Technical Field

[0001] This utility model relates to the field of automobile processing and manufacturing technology, specifically to a front hood lock installation guide and positioning tool. Background Technology

[0002] In the automotive manufacturing industry, the hood lock is a core component that ensures the safety of the vehicle's front compartment and controls the precision of the hood's opening and closing. Its installation quality directly determines the hood's sealing performance, gap uniformity, and long-term stability. If there is a deviation in the installation position, it may not only cause unevenness and uneven gaps between the hood and surrounding parts such as the body fenders and bumpers after the hood is closed, but may also cause safety hazards such as abnormal noises during driving and accidental loosening of the hood, while increasing the labor cost of manual adjustment later.

[0003] In existing technologies, operators often rely on experience to manually align the lock body with the mounting holes on the vehicle body. This method is susceptible to human error and other factors, making it difficult to accurately control the lock body's installation posture and spatial position. This reduces the single-assembly pass rate and restricts the production efficiency of the vehicle assembly line. Therefore, those skilled in the art provide a front hood lock installation guide and positioning fixture to solve the problems mentioned in the background technology. Utility Model Content

[0004] The purpose of this utility model is to provide a front hood lock installation guide and positioning tool to solve the problems in the above-mentioned technology.

[0005] This utility model provides the following technical solution: a front hood lock installation guide positioning fixture, including a fixture body, four positioning mechanisms are provided on the fixture body, and a guide clamping mechanism is provided inside the fixture body; The positioning mechanism includes four connecting rods fixedly connected to the tooling body in a rectangular array. A support block is fixedly connected to each connecting rod. A connecting hole is opened on each connecting rod, and an air storage tube is fixedly connected to the connecting hole. A suction cup is fixedly connected to one end of the air storage tube, and a suction tube is fixedly connected to the other end of the air storage tube. A suction piston is slidably connected to the end of the suction tube opposite to the air storage tube. A first one-way valve is fixedly connected to the end of the air storage tube near the suction tube, and a third one-way valve is fixedly connected to the end of the air storage tube opposite to the suction tube. A second one-way valve is fixedly connected to the side wall of the suction tube.

[0006] As a preferred embodiment of the above technical solution, the gas storage tube is connected to the suction cup and the suction tube through a first one-way valve and a third one-way valve, respectively.

[0007] As a preferred embodiment of the above technical solution, the guide clamping mechanism includes a clamping plate, a clamping groove is provided at the center of the clamping plate, a permanent magnet is fixedly connected in the clamping groove, and a limit bolt is fixedly connected at the center of the side of the clamping plate opposite to the clamping groove.

[0008] As a preferred embodiment of the above technical solution, a sliding groove is provided in the tooling body, and the clamping plate slides within the sliding groove.

[0009] As a preferred embodiment of the above technical solution, the limiting bolt is threadedly connected to the tooling body, and the limiting bolt passes through the sliding groove.

[0010] As a preferred embodiment of the above technical solution, the clamping groove conforms to the shape of the front hood lock.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes four positioning mechanisms arranged in a rectangular array. By adjusting the air pressure within the suction cups, negative pressure adsorption is created, firmly fixing the hood lock to a preset position on the vehicle body. The clamping groove of the guide clamping mechanism perfectly matches the shape of the hood lock, allowing for a form-fitting fixation of the lock body. Simultaneously, the permanent magnet further attracts the lock body, preventing it from falling off during installation. By rotating the limiting bolts, the position of the clamping plate can be adjusted, thereby changing the spatial height and horizontal position of the clamping groove for further fixation. It is also adaptable to the different hood lock installation depths and lock body sizes of various vehicle models, eliminating the need for custom-made tooling for each model and reducing tooling procurement and inventory costs for automakers. Attached Figure Description

[0012] Figure 1 A schematic diagram of a front hood lock installation guide and positioning fixture; Figure 2 This is an exploded structural diagram of the guide clamping mechanism in a front hood lock installation guide positioning fixture; Figure 3 This is an exploded structural diagram of the positioning mechanism in a front hood lock installation guide positioning fixture; Figure 4 A schematic cross-sectional view of the air storage pipe in a front hood lock installation guide and positioning fixture; Figure 5 A front hood lock installation guide and positioning tool Figure 3 An enlarged schematic diagram of the structure of A in the diagram.

[0013] In the diagram: 1. Tooling body; 101. Sliding groove; 2. Positioning mechanism; 21. Connecting rod; 22. Support block; 23. Suction cup; 24. Air storage pipe; 25. First one-way valve; 26. Suction pipe; 27. Suction piston; 28. Second one-way valve; 29. ​​Third one-way valve; 3. Guide clamping mechanism; 31. Clamping plate; 32. Clamping groove; 33. Permanent magnet; 34. Limit bolt. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figure 1 - Figure 5 As shown, this utility model provides a technical solution: a front hood lock installation guide positioning fixture, including a fixture body 1, four positioning mechanisms 2 are provided on the fixture body 1, and a guide clamping mechanism 3 is provided inside the fixture body 1; The positioning mechanism 2 includes four connecting rods 21 fixedly connected to the tooling body 1 in a rectangular array. A support block 22 is fixedly connected to the connecting rod 21. A connecting hole is opened on the connecting rod 21. An air storage tube 24 is fixedly connected in the connecting hole. A suction cup 23 is fixedly connected to one end of the air storage tube 24. A suction tube 26 is fixedly connected to the other end of the air storage tube 24. A suction piston 27 is slidably connected to the end of the suction tube 26 away from the air storage tube 24. A first one-way valve 25 is fixedly connected to the end of the air storage tube 24 near the suction tube 26. A third one-way valve 29 is fixedly connected to the end of the air storage tube 24 away from the suction tube 26. A second one-way valve 28 is fixedly connected to the side wall of the suction tube 26.

[0016] In practice, the tooling body 1 is a transparent plate with arc-shaped sides for easy handling and alignment of the lock mounting holes with the vehicle body mounting holes. A support block 22 facilitates initial fixation by pressing the suction cup 23. The air storage pipe 24 is made of seamless steel pipe, vertically penetrating the axial connection hole of the connecting rod 21. Its lower end passes through the suction cup 23, whose edge is designed with a wavy lip to ensure a tight seal when in contact with the workpiece surface. A first one-way valve 25 is installed at the connection between the air storage pipe 24 and the suction pipe 26, allowing only gas to flow from the air storage pipe 24. The second one-way valve 28 on the side wall of the suction tube 26 only allows gas to flow from the suction tube 26 to the outside, and is used to discharge the air in the suction tube 26 when the suction piston 27 is reset; while the third one-way valve 29 is installed at the end of the gas storage tube 24 near the suction cup 23, and only allows gas to flow from the suction cup 23 side to the gas storage tube 24. When the suction piston 27 is pushed, the gas in the suction tube 26 is discharged to the outside. When the piston is pulled, a negative pressure is formed in the gas storage tube 24, and the air between the suction cup 23 and the workpiece is drawn in through the third one-way valve 29 to achieve the adsorption and positioning of the workpiece.

[0017] As one implementation method in this embodiment, please refer to Figure 3 - Figure 5 As shown, the gas storage tube 24 is connected to the suction cup 23 and the suction tube 26 through the first one-way valve 25 and the third one-way valve 29, respectively.

[0018] In practice, by connecting the gas storage tube 24 to the suction cup 23 and the suction tube 26 through the first one-way valve 25 and the third one-way valve 29 respectively, it is convenient to extract the gas in the suction cup 23.

[0019] As one implementation method in this embodiment, please refer to Figure 3 - Figure 5 As shown, the guide clamping mechanism 3 includes a clamping plate 31, a clamping groove 32 is provided at the center of the clamping plate 31, a permanent magnet 33 is fixedly connected in the clamping groove 32, and a limit bolt 34 is fixedly connected at the center of the side of the clamping plate 31 facing away from the clamping groove 32.

[0020] In specific implementation, the permanent magnet 33 is made of neodymium iron boron strong magnetic material and is embedded in the groove at the bottom of the clamping groove 32. Its magnetic force can help to attract the workpiece and prevent it from falling off during the clamping process. The limit bolt 34 is fitted with the threaded hole of the tooling body 1 with fine thread. The end is connected to the clamping plate 31 through the bearing. When the limit bolt 34 is rotated, the clamping plate 31 can be driven to move axially along the sliding groove 101 to realize the clamping or loosening of the workpiece. The end of the limit bolt 34 is also equipped with a scale plate, which can accurately control the clamping force to meet the needs of workpieces of different thicknesses.

[0021] As one implementation method in this embodiment, please refer to Figure 3 - Figure 5 As shown, a sliding groove 101 is provided inside the tooling body 1, and the clamping plate 31 slides in the sliding groove 101.

[0022] In specific implementation, a sliding groove is provided in the sliding groove 101, and the clamping plate 31 is in the sliding groove. By setting the sliding groove, the clamping plate 31 can be limited to avoid flipping.

[0023] As one implementation method in this embodiment, please refer to Figure 1 - Figure 2 As shown, the limiting bolt 34 is threadedly connected to the tooling body 1, and the limiting bolt 34 passes through the sliding groove 101.

[0024] As one implementation method in this embodiment, please refer to Figure 1 - Figure 2 As shown, the clamping groove 32 fits the shape of the front hood lock.

[0025] In practice, by setting the shape of the clamping groove 32 to fit the shape of the front hood lock, the front hood lock can be initially clamped.

[0026] Working principle: First, the hood lock is placed into the clamping groove 32 on the clamping plate 31 to achieve initial positioning, and the lock body is further attracted by the permanent magnet 33 in the clamping groove 32. Then, the hood lock is initially fixed to the vehicle body by the suction cups 23 on the four positioning mechanisms 2 arranged in a rectangular array on the tooling body 1. Then, by pulling the suction piston 27 in the suction pipe 26, the first one-way valve 25 creates negative pressure in the air storage pipe 24. With the one-way conduction of the third one-way valve 29, the gas in the suction cup 23 is drawn into the air storage pipe. Inside tube 24, the suction piston 27 is pressed simultaneously to expel the gas from the suction tube 26 through the second one-way valve 28. The above steps are repeated to ensure that the suction cup 23 is firmly attached to the corresponding position on the vehicle body, ensuring that the tooling body 1 is positioned stably. Then, by rotating the limiting bolt 34 that is threaded to the tooling body 1 and passes through the sliding groove 101, the clamping plate 31 is driven to slide in the sliding groove 101, precisely adjusting the position of the lock body so that the lock body mounting hole is completely aligned with the vehicle body mounting hole, thus completing the precise guiding and positioning of the front hood lock for subsequent installation operations.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A front hood lock installation guide and positioning fixture, comprising a fixture body (1), characterized in that: The tooling body (1) is provided with four positioning mechanisms (2), and the tooling body (1) is provided with a guide clamping mechanism (3). The positioning mechanism (2) includes four connecting rods (21) fixedly connected in a rectangular array to the tooling body (1). A support block (22) is fixedly connected to the connecting rod (21). A connecting hole is opened on the connecting rod (21). An air storage tube (24) is fixedly connected in the connecting hole. A suction cup (23) is fixedly connected to one end of the air storage tube (24). A suction tube (26) is fixedly connected to the other end of the air storage tube (24). A suction piston (27) is slidably connected to the end of the suction tube (26) away from the air storage tube (24). A first one-way valve (25) is fixedly connected to the end of the air storage tube (24) near the suction tube (26). A third one-way valve (29) is fixedly connected to the end of the air storage tube (24) away from the suction tube (26). A second one-way valve (28) is fixedly connected to the side wall of the suction tube (26).

2. The front hood lock installation guide positioning fixture according to claim 1, characterized in that: The gas storage tube (24) is connected to the suction cup (23) and the suction tube (26) through the first one-way valve (25) and the third one-way valve (29), respectively.

3. The front hood lock installation guide positioning fixture according to claim 1, characterized in that: The guide clamping mechanism (3) includes a clamping plate (31), a clamping groove (32) is provided at the center of the clamping plate (31), a permanent magnet (33) is fixedly connected in the clamping groove (32), and a limit bolt (34) is fixedly connected at the center of the side of the clamping plate (31) away from the clamping groove (32).

4. The front hood lock installation guide positioning fixture according to claim 3, characterized in that: The tooling body (1) has a sliding groove (101) inside, and the clamping plate (31) slides in the sliding groove (101).

5. The front hood lock installation guide positioning fixture according to claim 4, characterized in that: The limiting bolt (34) is threadedly connected to the tooling body (1), and the limiting bolt (34) passes through the sliding groove (101).

6. The front hood lock installation guide positioning fixture according to claim 3, characterized in that: The clamping groove (32) fits the shape of the front hood lock.

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