Punching device facilitating positioning of automobile parts

Abstract

The punching device comprises a base, the upper end of the base is fixedly connected with a plurality of sets of positioning columns, the outer wall of a device cylinder is fixedly connected with two sets of connecting pipes, one-way valves are installed in the two sets of connecting pipes, one set of connecting pipes are communicated with a liquid conveying pipe, and the other set of connecting pipes are communicated with a liquid conveying pipe. The liquid conveying pipe is communicated with the lubricating holes in the multiple sets of positioning columns, a piston is movably connected into the device cylinder, a driving assembly for driving the piston to slide is installed in the device cylinder, and lubricating liquid is injected into the device cylinder. The piston is driven by the reciprocating lead screw to slide, so that lubricating liquid is uniformly coated on the surface of the positioning column through the lubricating hole to form a continuous lubricating film, the sliding friction resistance between the positioning sleeve and the positioning column is obviously reduced, the metal abrasion is effectively inhibited, and the problem that the fit clearance is increased due to long-term high-frequency punching is avoided; therefore, accurate alignment of the punching die and the fixed die is ensured, and the stability of the punching track and the machining quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of punching device technology, and in particular to a punching device that facilitates the positioning of automotive parts. Background Technology

[0002] Automotive parts are the various units that make up the whole of automotive parts processing and the products that serve automotive parts processing. In the production and processing of automotive parts, for sheet materials, in addition to cutting, punching is also required, which is usually done using a punching device.

[0003] Chinese utility model patent CN221754490U discloses a punching device for automotive parts. In use, the device uses a hydraulic cylinder to drive a connecting seat to perform punching operations. Positioning sleeves are provided at the four corners of the connecting seat. The positioning sleeves slide on the outer wall of the positioning post to improve the stability during punching. However, in actual use, the positioning sleeves slide in direct contact with the positioning post. Long-term high-frequency punching leads to increased friction between metals. After wear, the sliding clearance increases, causing the punching die's pressing trajectory to deviate. Therefore, this invention proposes a punching device that facilitates the positioning of automotive parts to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a punching device that facilitates the positioning of automotive parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A punching device for facilitating the positioning of automotive parts includes a base. Multiple sets of positioning pins are fixedly connected to the upper end of the base. A top plate is connected to the ends of the positioning pins. Positioning sleeves are fitted onto the outer walls of the positioning pins. A sliding plate is connected to the positioning sleeves. A punching die is installed at the lower end of the sliding plate. A fixed die is installed on the base. Lubrication holes are formed on the outer walls of the positioning pins, and the lubrication holes on the outer walls of the same positioning pin are interconnected. A device cylinder is fixedly connected to the outer wall of the base. Two sets of connecting pipes are fixedly connected to the outer wall of the device cylinder, and each set contains a one-way valve. One set of connecting pipes is connected to an infusion pipe, which communicates with the lubrication holes in the positioning pins. A piston is movably connected inside the device cylinder, and a drive assembly for driving the piston to slide is installed inside the device cylinder. Lubricating fluid is injected into the device cylinder.

[0007] Preferably, the drive assembly includes a reciprocating screw rotatably connected inside the device cylinder, a screw sleeve threadedly connected to the threaded section of the reciprocating screw, a piston connected to the screw sleeve via a connecting rod, and the screw sleeve in close contact with the inner wall of the device cylinder.

[0008] Preferably, a limiting block is fixedly connected to the end of the reciprocating lead screw, and the radius of the limiting block is larger than the radius of the reciprocating lead screw.

[0009] Preferably, the outer wall of the base is rotatably connected to a gear one and a gear two, and the gear one is coaxially fixedly connected to an incomplete gear, and the radii of the incomplete gear and the gear two are both smaller than the radius of the gear one, and the incomplete gear and the gear two mesh with each other.

[0010] Preferably, a rack is fixedly connected to the outer wall of the slide plate, and the rack meshes with a gear.

[0011] Preferably, a hydraulic cylinder is fixedly connected to the end face of the top plate, and the telescopic end is fixedly connected to the end face of the slide plate. A storage box is slidably connected to the outer wall of the base, and the storage box is located directly below the fixed mold.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model drives the piston to slide via a reciprocating screw, so that the lubricant is evenly coated on the surface of the positioning post through the lubrication hole, forming a continuous lubrication film. This significantly reduces the sliding friction resistance between the positioning sleeve and the positioning post, effectively inhibits metal wear, and avoids the problem of increased fit clearance caused by long-term high-frequency stamping. This ensures the precise alignment of the punching die and the fixed die, and improves the stability of the punching trajectory and the processing quality.

[0014] 2. This utility model uses an incomplete gear and gear two reduction transmission design to convert the rapid linear motion of the slide into the slow rotation of the reciprocating screw, accurately control the sliding speed of the piston, realize the quantitative supply of lubricating fluid, avoid excessive consumption, and at the same time, the lubrication system only starts when the slide is pressed down. During the reset process, the gear set disengages and the lubricating fluid delivery automatically stops, further reducing resource waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a punching device for facilitating the positioning of automotive parts according to the present invention.

[0016] Figure 2 for Figure 1 Structural diagram.

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the gear, rack, and device cylinder.

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at the central device cylinder.

[0019] In the diagram: 1. Base; 2. Top plate; 3. Hydraulic cylinder; 4. Slide plate; 5. Storage box; 6. Fixed mold; 7. Infusion tube; 8. Rack; 9. Gear 1; 10. Incomplete gear; 11. Device cylinder; 12. Gear 2; 13. Connecting pipe; 14. Lubrication hole; 15. Reciprocating lead screw; 16. Limit block; 17. Lead screw sleeve; 18. Piston; 19. Positioning pin; 20. Positioning sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A punching device for facilitating the positioning of automotive parts includes a base 1. Multiple sets of positioning pins 19 are fixedly connected to the upper end of the base 1. A top plate 2 is connected to the ends of the multiple sets of positioning pins 19. Positioning sleeves 20 are fitted onto the outer walls of the multiple sets of positioning pins 19. A sliding plate 4 is connected to the outer walls of the positioning sleeves 20. A punching die is installed at the lower end of the sliding plate 4. A fixed die 6 is installed on the base 1. Lubrication holes 14 are opened on the outer walls of the multiple sets of positioning pins 19. The lubrication holes 14 on the outer walls of the same positioning pin 19 are interconnected. A device cylinder 11 is fixedly connected to the outer wall of the base 1. Two sets of connecting pipes 13 are fixedly connected to the outer wall of the device cylinder 11, and each set is equipped with a one-way valve. One set of connecting pipes 13 is connected to an infusion pipe 7, which is connected to the lubrication holes 14 in the multiple sets of positioning pins 19. A piston 18 is movably connected inside the device cylinder 11. A drive assembly for driving the piston 18 to slide is installed inside the device cylinder 11. Lubricating fluid is injected into the device cylinder 11.

[0022] Specifically, by sliding the piston 18, lubricant in the device cylinder 11 can be injected into multiple lubrication holes 14. With the overflow of lubricant and the sliding of the positioning sleeve 20, the lubricant can be evenly coated on the outer wall of the positioning post 19, forming a lubricating film. This reduces the frictional resistance when the positioning sleeve 20 slides, slowing down the wear of the positioning post 19. It should be noted that to ensure the quality during punching, a clamping mechanism can be installed on the upper end of the base 1. However, the existing clamping mechanism's installation methods and technical functions are mature technologies and are irrelevant to the design purpose of this solution; therefore, they will not be described in detail.

[0023] The drive assembly includes a reciprocating screw 15 rotatably connected inside the device cylinder 11. A screw sleeve 17 is threadedly connected to the threaded section of the reciprocating screw 15. The screw sleeve 17 is connected to a piston 18 via a connecting rod. The screw sleeve 17 is in close contact with the inner wall of the device cylinder 11.

[0024] Specifically, another connecting pipe 13 is connected to an external container containing lubricating fluid. The transmission between the reciprocating screw 15 and the screw sleeve 17 can convert the up-and-down movement of the slide plate 4 into the reciprocating movement of the piston 18, thereby realizing the automatic pumping of lubricating fluid.

[0025] A limit block 16 is fixedly connected to the end of the reciprocating screw 15. The radius of the limit block 16 is larger than that of the reciprocating screw 15. Gear 9 and gear 12 are rotatably connected to the outer wall of the base 1. Gear 9 is coaxially fixedly connected to an incomplete gear 10. The radii of both the incomplete gear 10 and gear 12 are smaller than that of gear 9. The incomplete gear 10 and gear 12 mesh with each other. A rack 8 is fixedly connected to the outer wall of the slide plate 4. The rack 8 meshes with gear 9.

[0026] Specifically, by setting the rack 8, its linear motion can be converted into the rotational motion of the reciprocating screw 15. At the same time, by setting the radius between the incomplete gear 10, gear one 9 and gear two 12, the rotational speed transmitted from the rack 8 to the reciprocating screw 15 can be reduced, forming a speed reduction mechanism. This avoids the piston 18 sliding too fast, which would lead to a waste of resources.

[0027] A hydraulic cylinder 3 is fixedly connected to the end face of the top plate 2, and the telescopic end is fixedly connected to the end face of the slide plate 4. A storage box 5 is slidably connected to the outer wall of the base 1, and the storage box 5 is located directly below the fixed mold 6.

[0028] In this utility model, the device is used as follows: When the operator starts the hydraulic cylinder 3, its telescopic end drives the slide plate 4 to slide downward along the positioning post 19. The punching die at the lower end of the slide plate 4 then punches the automotive parts in the fixed die 6 on the base 1. At this time, the positioning sleeve 20 slides synchronously along the outer wall of the positioning post 19. Through the guiding effect of multiple sets of positioning posts 19, the precise alignment of the punching die and the fixed die 6 is ensured, and the stamping trajectory is avoided from deviating.

[0029] During the downward pressing of the slide plate 4, the rack 8 fixed to the outer wall of the slide plate 4 moves downward and meshes with gear 9. Gear 9 drives the coaxially fixed incomplete gear 10 to rotate. Since the radius of the incomplete gear 10 and gear 12 is smaller than that of gear 9, a speed reduction transmission structure is formed, thereby reducing the output speed of gear 12. Gear 12 drives the reciprocating screw 15 in the drive cylinder 11 to rotate slowly. The threaded section of the reciprocating screw 15 engages with the screw sleeve 17, converting the rotational motion into the linear reciprocating motion of the screw sleeve 17, and pushing the piston 18 to slide inside the drive cylinder 11 via the connecting rod.

[0030] As the piston 18 advances into the device cylinder 11, the lubricating fluid inside the device cylinder 11 is supplied under pressure through the connecting pipe 13 and the infusion pipe 7 to the lubrication holes 14 of each positioning post 19. The lubricating fluid overflows from the lubrication holes 14 onto the outer wall of the positioning post 19 and is evenly coated on the surface of the positioning post 19 as the positioning sleeve 20 slides, forming a lubricating film. This lubricating film effectively reduces the frictional resistance between the positioning sleeve 20 and the positioning post 19, while also reducing metal wear and extending the service life of the guide structure. When the piston 18 retracts, the external lubricating fluid container replenishes the lubricating fluid into the device cylinder 11 through another connecting pipe 13 and a one-way valve, ensuring the continuous operation of the lubrication system.

[0031] After punching is completed, hydraulic cylinder 3 drives slide plate 4 to rise and reset, rack 8 moves upward accordingly, driving gear 9 to rotate in the opposite direction. At this time, incomplete gear 10 disengages from gear 12, reciprocating screw 15 stops rotating, and piston 18 remains stationary to prevent lubricant from being wasted during non-working conditions. During the resetting process of slide plate 4, the waste material generated during punching falls into the collection box 5 below base 1 for easy collection and cleaning.

[0032] In summary, this device transforms the stamping action of the slide plate 4 into the driving power of the lubrication system through the linkage between the incomplete gear 10, gear one 9 and gear two 12, realizing the synchronous automation of punching and lubrication. The speed reduction transmission design ensures that the lubricant is supplied on demand and avoids excessive consumption. The continuous formation of the lubricating film significantly reduces the wear of the positioning pin 19 and the positioning sleeve 20, maintaining the accuracy of the punching trajectory.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A punching device for facilitating the positioning of automotive parts, comprising a base (1), characterized in that, The upper end of the base (1) is fixedly connected to multiple sets of positioning columns (19), and the ends of the multiple sets of positioning columns (19) are connected to a top plate (2). The outer walls of the multiple sets of positioning columns (19) are fitted with positioning sleeves (20), and the positioning sleeves (20) are connected to a sliding plate (4). A punching die is installed at the lower end of the sliding plate (4). The base (1) is fitted with a fixed die (6). The outer walls of the multiple sets of positioning columns (19) are provided with lubrication holes (14), and the lubrication holes (14) on the outer walls of the same positioning column (19) are interconnected. A device cylinder (11) is fixedly connected to the outer wall of the base (1). Two sets of connecting pipes (13) are fixedly connected to the outer wall of the device cylinder (11), and one-way valves are installed inside each of them. One set of the connecting pipes (13) is connected to an infusion pipe (7). The infusion pipe (7) is connected to the lubrication holes (14) in multiple sets of positioning columns (19). A piston (18) is movably connected inside the device cylinder (11). A drive assembly for driving the piston (18) to slide is installed inside the device cylinder (11). Lubricating fluid is injected into the device cylinder (11).

2. The punching device for facilitating the positioning of automotive parts according to claim 1, characterized in that, The drive assembly includes a reciprocating screw (15) rotatably connected inside the device cylinder (11). A screw sleeve (17) is threadedly connected to the threaded section of the reciprocating screw (15). The screw sleeve (17) is connected to a piston (18) via a connecting rod. The screw sleeve (17) is in close contact with the inner wall of the device cylinder (11).

3. The punching device for facilitating the positioning of automotive parts according to claim 2, characterized in that, The end of the reciprocating screw (15) is fixedly connected to a limiting block (16), and the radius of the limiting block (16) is larger than that of the reciprocating screw (15).

4. The punching device for facilitating the positioning of automotive parts according to claim 3, characterized in that, The outer wall of the base (1) is rotatably connected to a gear one (9) and a gear two (12). The gear one (9) is coaxially fixedly connected to an incomplete gear (10), and the radii of the incomplete gear (10) and the gear two (12) are both smaller than the radius of the gear one (9). The incomplete gear (10) and the gear two (12) mesh with each other.

5. A punching device for facilitating the positioning of automotive parts according to claim 4, characterized in that, A rack (8) is fixedly connected to the outer wall of the slide plate (4), and the rack (8) meshes with the gear (9).

6. A punching device for facilitating the positioning of automotive parts according to claim 5, characterized in that, A hydraulic cylinder (3) is fixedly connected to the end face of the top plate (2), and the telescopic end is fixedly connected to the end face of the slide plate (4). A storage box (5) is slidably connected to the outer wall of the base (1), and the storage box (5) is located directly below the fixed mold (6).

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