Automobile part clamping tool

Abstract

This invention belongs to the field of processing equipment technology, specifically disclosing a clamping fixture for automotive parts, including a worktable and two sets of clamping units. The automotive parts are placed on the worktable. The two sets of clamping units are used to clamp both sides of the automotive parts. Each clamping unit includes a clamping block, a manual push-pull clamp, a first mounting base, a guide rod, and a copper block. The manual push-pull clamp is mounted on the first mounting base. The first mounting base and the guide rod are made of stainless steel. The first mounting base has mounting holes, and the guide holes also have mounting holes. Copper blocks are fixed on the upper and lower sides of the mounting holes, forming a guide hole between the mounting holes and the copper blocks to guide the guide rod. The guide rod is slidably connected within the guide hole. Both the guide rod and the push rod of the manual push-pull clamp are connected to the clamping block. By setting the copper block, the friction between the guide rod and the first mounting base is reduced, making the movement between the guide rod and the first mounting base smoother without affecting the guiding effect.

Description

Technical Field

[0001] This invention belongs to the field of processing equipment technology, and in particular relates to a clamping fixture for automotive parts. Background Technology

[0002] Currently, automotive parts require drilling or welding during processing, necessitating the use of clamps for holding them. Our company currently uses manual push-pull clamps, similar in structure to the GH-36204 model, but with differences in the length and stroke of each component. In this type of clamp, the handle swings, driving a push rod in a linear motion. Because the handle operates in a swinging motion, guide blocks are needed to guide the linear movement of the push rod. Currently, the imported equipment's mounting blocks and guide blocks are made of stainless steel. Initially, the linear movement between the guide blocks and mounting blocks was not smooth, resulting in significant friction, which prevented many newly imported pieces of equipment from being put into use immediately. Summary of the Invention

[0003] The purpose of this invention is to provide a clamping fixture for automotive parts, which solves the problem that when the mounting block and guide block are both made of stainless steel, the linear motion between the guide block and the mounting block is not smooth and the friction is large when they are first used, which causes many newly introduced equipment to not be put into use in time.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: an automotive parts clamping fixture, comprising a worktable and two sets of clamping units, wherein the automotive parts are placed on the worktable; the two sets of clamping units are used to clamp both sides of the automotive parts; each set of clamping units includes a clamping block, a manual push-pull clamp, a first mounting base, a guide rod, and a copper block, wherein the manual push-pull clamp is mounted on the first mounting base, the first mounting base and the guide rod are made of stainless steel, the first mounting base is provided with a mounting hole, the guide hole is provided with a mounting hole, copper blocks are fixed on the upper and lower sides of the mounting hole, and a guide hole is formed between the mounting hole and the copper blocks to guide the guide rod; the guide rod is slidably connected in the guide hole; the guide rod and the push rod of the manual push-pull clamp are both connected to the clamping block.

[0005] Furthermore, it also includes two sets of dust-wiping units, which perform dust-wiping treatment on the surface of automotive parts. Each dust-wiping unit corresponds to a clamping unit. Each set of dust-wiping units includes a dust-wiping brush and a first transmission device. The clamping unit drives the dust-wiping brush to move on the surface of the automotive parts through the first transmission device. The movement state of the dust-wiping brush is opposite to the movement state of the clamping block. When the clamping block approaches the automotive parts to clamp them, the dust-wiping brush moves from the center to both sides of the automotive parts.

[0006] Furthermore, it also includes two sets of jet units, which are used to spray air onto the surface of the automotive parts. Each jet unit corresponds to a clamping unit. Each set of jet units includes a cylinder, a delivery pipe, and a nozzle. The clamping unit is used to drive the piston plate in the cylinder to move. When the clamping block is close to the automotive parts for clamping, the cylinder draws in air; when the clamping block is away from the automotive parts, the cylinder exhausts air. The cylinder is provided with an air inlet and an air outlet. The air inlet is provided with a one-way air inlet valve, and the air outlet is provided with a one-way air outlet valve. The two sides of the delivery pipe are connected to the air outlet and the nozzle, respectively.

[0007] Furthermore, the one-way exhaust valve is a pressure valve. When the pressure inside the cylinder reaches a set value, the pressure valve opens, and the nozzle sprays air.

[0008] Furthermore, the first transmission device includes a transmission rod and a transmission gear. One side of the transmission rod is connected to the dust-wiping brush, and the other side of the transmission rod is provided with a first set of teeth that can mesh with the transmission gear. The guide rod is provided with a second set of teeth that meshes with the transmission gear. The guide rod and the transmission rod are arranged in parallel and are located on both sides of the transmission gear, respectively. The transmission gear is rotatably connected to the worktable.

[0009] Furthermore, it also includes two sets of positioning units, which are used to position one side of the automotive parts. Each positioning unit corresponds to a clamping unit. Each set of positioning units includes a positioning block and a second transmission device. The worktable has receiving grooves on both sides, and the positioning block is vertically slidably connected in the receiving groove. A spring is installed between the bottom of the positioning block and the receiving groove. Under the elastic force of the spring, the top of the positioning block can extend out of the receiving groove. The clamping unit drives the positioning block to move vertically through the second transmission device. When the guide rod of the clamping unit moves towards the automotive parts, the clamping unit drives the positioning block to move downward and retract into the receiving groove through the second transmission device.

[0010] Furthermore, the end of the guide rod is connected to the piston plate.

[0011] Furthermore, the delivery pipe can deform to change the position of the nozzle.

[0012] Furthermore, the second transmission device includes a transmission rope, one side of which is connected to the bottom of the positioning block, and the other side is wound around the central shaft of the transmission gear.

[0013] The working principle of this technical solution is as follows: In the initial state, the manual push-pull clamp is in the released state, the clamping blocks are at their extreme positions on both sides, the two sets of dust-wiping brushes are in the middle position with their sides in contact, and the tops of the two sets of positioning blocks extend out of the receiving groove under the action of springs. The automotive parts are pushed in from the other side of the positioning blocks until their sides abut against the sides of the positioning blocks. Then, the handle of the manual push-pull clamp is simultaneously driven, causing the push rod of the manual push-pull clamp to move towards the automotive parts. The push rod and clamping blocks drive the guide rod to move. The movement of the guide rod drives the transmission gear to rotate, and the rotation of the transmission gear drives the transmission rod and dust-wiping brushes to move away from each other. During this movement, a simple dust-wiping treatment is performed on the surface of the automotive parts. Simultaneously, the rotation of the transmission gear causes the transmission rope wound around the central shaft of the transmission gear to continue winding, pulling the positioning blocks downwards and completely retracting them into the receiving groove, compressing the springs. Furthermore, the movement of the guide rod drives the piston plate in the cylinder to move, causing the cylinder to perform an intake action. When the manual push-pull clamp reaches its dead center position, it stops moving, as does the guide rod. This causes the transmission gear, cleaning brush, positioning block, and piston to stop moving as well. The clamping blocks then hold the automotive parts from both sides, allowing the worker to begin processing them.

[0014] After processing, the worker simultaneously drives the handle of the manual push-pull clamp, causing the push rod of the manual push-pull clamp to move away from the automotive parts. During this process, the guide rod drives the transmission gear to rotate in the opposite direction. The rotation of the transmission gear drives the transmission rod and the dust-wiping brush to move closer to each other. During this movement, the dust-wiping brush performs a simple dust-wiping treatment on the surface of the automotive parts (debris generated during processing). At the same time, the rotation of the transmission gear causes the transmission cable wound around the central shaft of the transmission gear to gradually loosen. The positioning block gradually loses the tension of the transmission cable and moves upward under the elastic force of the spring. Furthermore, the movement of the guide rod drives the piston plate in the cylinder to move. The piston plate continuously compresses the air in the cylinder. When the opening pressure of the pressure valve is reached, the air in the cylinder is sprayed towards the processing position through the air outlet, delivery pipe, and nozzle, blowing air onto the processing position to achieve the effect of dust removal and cooling.

[0015] The beneficial effects of this technical solution are as follows: ① This technical solution reduces the friction between the guide rod and the first mounting base by setting a copper block, making the movement between the guide rod and the first mounting base smoother without affecting the guiding effect.

[0016] ②This technical solution, by setting up a dust removal unit, enables automotive parts to be dusted both before and after processing. Dusting before processing facilitates welding of automotive parts, and dust removal after processing facilitates cleaning of shavings from drilled areas.

[0017] ③ This technical solution, by setting up an air jet unit, can achieve air blowing at the processing position, thereby achieving the effects of dust removal and cooling.

[0018] ④ This technical solution, by setting up a positioning unit, can locate the position of automotive parts. During processing, the positioning block will retract to avoid affecting the processing.

[0019] ⑤ This technical solution sets the delivery pipe as a deformable pipe, thus enabling the nozzle position to be adjusted according to the processing location to ensure the blowing effect.

[0020] ⑥ In this technical solution, the dust removal unit, the air jet unit, and the positioning unit do not require additional power sources; they will all move synchronously according to the movement of the clamping unit. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the automotive parts clamping fixture of the present invention during clamping; Figure 2 This is a schematic diagram of the structure of the automotive component clamping fixture of the present invention when it is released. Figure 3 This is a structural diagram showing the location of the copper block; Figure 4 A schematic diagram of a U-shaped dust-wiping brush; Figure 5 for Figure 4 A schematic diagram of the U-shaped dust brush rotating upwards. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: workbench 1, automotive parts 2, clamping block 3, push rod 4, guide rod 5, transmission gear 6, transmission rod 7, dust brush 8, first mounting base 9, second mounting base 10, central shaft 11, connecting rod 12, piston plate 13, cylinder 14, one-way intake valve 15, pressure valve 16, delivery pipe 17, nozzle 18, positioning block 19, spring 20, transmission pull rope 21, copper block 22, guide wheel 23, vertical brush 24, horizontal brush 25, manual push-pull clamp 26.

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The basic implementation examples are as follows: Figure 1-5 As shown: an automotive parts clamping fixture includes a worktable 1, two sets of clamping units, two sets of dust-wiping units, two sets of air-jetting units, and two sets of positioning units. Automotive parts 2 are placed on the worktable 1. The two sets of clamping units are used to clamp the left and right sides of the automotive parts. Each clamping unit includes a clamping block 3, a manual push-pull clamp 26, a first mounting base 9, a guide rod 5, and a copper block 22. The manual push-pull clamp 26 is mounted on the first mounting base 9. The first mounting base 9 and the guide rod 5 are made of stainless steel. The first mounting base 9 has mounting holes, and copper blocks 22 are fixed on the upper and lower sides of the mounting holes. A guide hole is formed between the mounting holes and the copper blocks 22 to guide the guide rod 5. The guide rod 5 is slidably connected within the guide hole. The guide rod 5 and the push rod 4 of the manual push-pull clamp 26 are both connected to the clamping block 3.

[0025] The dust-wiping unit performs dust-wiping treatment on the surface of the automotive parts 2. Each dust-wiping unit corresponds to a clamping unit. Each dust-wiping unit includes a dust-wiping brush 8 and a first transmission device. The clamping unit drives the dust-wiping brush 8 to move on the surface of the automotive parts via the first transmission device. The movement state of the dust-wiping brush 8 is opposite to that of the clamping block 3. When the clamping block 3 approaches the automotive parts for clamping, the dust-wiping brush 8 moves from the center to both sides of the automotive parts. The first transmission device includes a transmission rod 7 and a transmission gear 6. In this embodiment, to adapt to the height of the guide rod 5, the transmission rod 7 is designed as a Z-shaped structure. The first transmission device is located behind the first mounting base 9, not in the direction of movement of the clamping unit, to avoid interference with the movement of the clamping unit. A second mounting base 10 is fixed on the worktable 1. The second mounting base 10 has through holes, and the upper and lower sides of the lower side of the transmission rod 7 are slidably connected within the through holes. The second mounting base 10 supports and guides the transmission rod 7. One side of the transmission rod 7 is connected to the dust-wiping brush 8, and the front side of the lower side of the transmission rod 7 is provided with a first set of teeth that can mesh with the transmission gear 6. The front side of the through hole leaves space for the first set of teeth to pass through. The guide rod 5 is provided with a second set of teeth that meshes with the transmission gear 6. The guide rod 5 and the transmission rod 7 are arranged in parallel and are located on both sides of the transmission gear 6. The transmission gear 6 is rotatably connected to the worktable 1 through the central shaft 11.

[0026] Depending on the shape of the dust-wiping brush 8 selected for car part 2, it can be a straight brush to wipe the top of car part 2. It can also be set to a U-shape, such as... Figure 4 , 5 As shown, it includes a horizontal brush 25 and two sets of vertical brushes 24. The two sets of vertical brushes 24 are rotatably connected to both sides of the horizontal brush 25. The two sets of vertical brushes 24 can be rotated to the top of the horizontal brush 25 to facilitate the placement of the car parts 2. The U-shaped dust-wiping brush 8 can wipe the top and front and rear sides of the car parts 2. The dust-wiping brush 8 is made of dense and soft bristles.

[0027] Since the horizontal movement of the push rod 4 is limited, a first gear and a second gear can be set between the transmission gear 6 and the transmission rod 7. The first set of teeth of the transmission rod 7 no longer meshes with the transmission gear 6, the second set of teeth of the guide rod 5 meshes with the transmission gear 6, the first gear meshes with the transmission gear 6, the first gear meshes with the second gear, and the second gear meshes with the first set of teeth of the transmission rod 7. By changing the transmission ratio through the first gear and the second gear, the transmission rod 7 can move more horizontally, thus ensuring the dust removal effect of the dust removal brush 8.

[0028] The jetting unit is used to spray air onto the surface of the automotive part 2. Each jetting unit corresponds to a clamping unit. Each jetting unit includes a cylinder 14, a delivery pipe 17, and a nozzle 18. The cylinder 14 is fixed to the worktable 1. The clamping unit drives the piston plate 13 within the cylinder 14. The end of the guide rod 5 is connected to the piston plate 13 via a connecting rod 12. When the clamping block 3 approaches the automotive part 2 for clamping, the cylinder 14 draws in air; when the clamping block 3 moves away from the automotive part 2, the cylinder 14 exhausts air. The cylinder 14 has an air inlet and an air outlet. The air inlet has a one-way air inlet valve 15, and the air outlet has a one-way air outlet valve. The two sides of the delivery pipe 17 are connected to the air outlet and the nozzle 18, respectively. The delivery pipe 17 can deform to change the position of the nozzle 18. The delivery pipe 17 can be equipped with a lifting structure to suspend it above the automotive part 2, or the material of the delivery pipe 17 can be made into a rigid structure capable of self-deformation and support. The one-way exhaust valve uses a pressure valve 16. When the pressure inside the cylinder 14 reaches the set value, the pressure valve 16 opens and the nozzle 18 sprays air.

[0029] The positioning unit is used to position one side of the automotive part 2. Each positioning unit corresponds to a clamping unit. Each positioning unit includes a positioning block 19 and a second transmission device. The worktable 1 has receiving grooves on both sides, and the positioning block 19 is vertically slidably connected within the receiving groove. A spring 20 is installed between the bottom of the positioning block 19 and the receiving groove; under the elastic force of the spring 20, the top of the positioning block 19 can extend out of the receiving groove. The clamping unit drives the positioning block 19 to move vertically through the second transmission device. When the guide rod 5 of the clamping unit moves towards the automotive part 2, the clamping unit drives the positioning block 19 downwards and retracts it into the receiving groove through the second transmission device. The second transmission device includes a transmission rope 21, one side of which is connected to the bottom of the positioning block 19, and the other side is wound around the central shaft 11 of the transmission gear 6. The worktable 1 has a drive chamber, and several guide wheels 23 are rotatably connected within the drive chamber. The guide wheels 23 guide the direction of the transmission rope 21. By setting the position of the positioning block 19 and the height of its extension from the receiving groove, the positioning block 19 is retracted into the receiving groove before the dust-wiping brush 8 reaches its position. By setting the diameter of the central shaft 11, the positioning block 19 can be stretched downwards until it is completely retracted into the receiving groove.

[0030] The specific implementation process is as follows: In the initial state, the manual push-pull clamp 26 is in the released state, the clamping block 3 is at its extreme positions on both sides, the two sets of dust-wiping brushes 8 are in the middle position with their sides in contact, and the tops of the two sets of positioning blocks 19 extend out of the receiving groove under the action of the spring 20. The car part 2 is pushed in from the other side of the positioning block 19 until its side abuts against the side of the positioning block 19. Then, the handle of the manual push-pull clamp 26 is driven simultaneously, causing the push rod 4 of the manual push-pull clamp 26 to move towards the car part 2. The push rod 4 and the clamping block 3 drive the guide rod 5 to move. The movement of the guide rod 5 drives the transmission gear 6 to rotate, and the rotation of the transmission gear 6 drives the transmission rod 7 and the dust-wiping brushes 8 to move away from each other. During the movement, a simple dust-wiping treatment is performed on the surface of the car part 2. At the same time, the rotation of the transmission gear 6 causes the transmission pull rope 21 wound on the central shaft 11 of the transmission gear 6 to continue to wind. The transmission pull rope 21 pulls the positioning block 19 downward and completely retracts it into the receiving groove, and the spring 20 is compressed. Furthermore, as the guide rod 5 moves, it drives the piston plate 13 inside the cylinder 14 to move, causing the cylinder 14 to perform an intake action. When the manual push-pull clamp 26 moves to its dead position, it stops moving, and the guide rod 5 also stops moving, causing the transmission gear 6, the dust brush 8, the positioning block 19, and the piston plate 13 to all stop moving. The clamping block 3 then clamps the automotive part 2 from both sides. The worker can then process the automotive part 2.

[0031] After processing, the worker simultaneously drives the handle of the manual push-pull clamp 26, causing the push rod 4 of the manual push-pull clamp 26 to move away from the automotive part 2. During this process, the guide rod 5 drives the transmission gear 6 to rotate in the opposite direction. The rotation of the transmission gear 6 drives the transmission rod 7 and the dust-wiping brush 8 to move closer to each other. During the movement, the dust-wiping brush 8 performs a simple dust-wiping treatment on the surface of the automotive part 2 (debris generated during processing). At the same time, the transmission gear 6 rotates, and the transmission rope 21 wrapped around the central shaft 11 of the transmission gear 6 will continuously loosen. The positioning block 19 gradually loses the tension of the transmission rope 21 and moves upward under the elastic force of the spring 20. In addition, during the movement of the guide rod 5, the piston plate 13 inside the cylinder 14 will move. The piston plate 13 continuously compresses the air inside the cylinder 14. When the opening pressure of the pressure valve 16 is reached, the air inside the cylinder 14 will be sprayed towards the processing position through the air outlet, the delivery pipe 17 and the nozzle 18, blowing air onto the processing position to achieve the effect of dust removal and cooling.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A clamping fixture for automotive parts, characterized in that: The system includes a workbench (1) and two sets of clamping units. The automotive parts (2) are placed on the workbench (1). The two sets of clamping units are used to clamp the two sides of the automotive parts (2). Each set of clamping units includes a clamping block (3), a manual push-pull clamp (26), a first mounting base (9), a guide rod (5), and a copper block (22). The manual push-pull clamp (26) is mounted on the first mounting base (9). The first mounting base (9) and the guide rod (5) are made of stainless steel. The first mounting base (9) has a mounting hole. The guide hole has a mounting hole. Copper blocks (22) are fixed on the upper and lower sides of the mounting hole. The mounting hole and the copper block (22) form a guide hole to guide the guide rod (5). The guide rod (5) is slidably connected in the guide hole. The guide rod (5) and the push rod (4) of the manual push-pull clamp (26) are both connected to the clamping block (3).

2. The automotive parts clamping fixture according to claim 1, characterized in that: It also includes two sets of dust removal units, which perform dust removal treatment on the surface of the automotive parts (2). Each dust removal unit corresponds to a clamping unit. Each set of dust removal units includes a dust removal brush (8) and a first transmission device. The clamping unit drives the dust removal brush (8) to move on the surface of the automotive parts (2) through the first transmission device. The movement state of the dust removal brush (8) is opposite to the movement state of the clamping block (3). When the clamping block (3) is close to the automotive parts (2) for clamping, the dust removal brush (8) moves from the center to both sides of the automotive parts (2).

3. The automotive parts clamping fixture according to claim 1, characterized in that: It also includes two sets of jet units, which are used to jet gas onto the surface of the automotive parts (2). Each jet unit corresponds to a clamping unit. Each set of jet units includes a cylinder (14), a delivery pipe (17), and a nozzle (18). The clamping unit is used to drive the piston plate (13) inside the cylinder (14) to move. When the clamping block (3) is close to the automotive parts (2) for clamping, the cylinder (14) draws in air. When the clamping block (3) is away from the automotive parts (2), the cylinder (14) exhausts air. The cylinder (14) is provided with an air inlet and an air outlet. The air inlet is provided with a one-way air inlet valve (15), and the air outlet is provided with a one-way air outlet valve. The two sides of the delivery pipe (17) are connected to the air outlet and the nozzle (18) respectively.

4. The automotive parts clamping fixture according to claim 3, characterized in that: The one-way exhaust valve is a pressure valve (16). When the pressure inside the cylinder (14) reaches the set value, the pressure valve (16) opens and the nozzle (18) sprays air.

5. The automotive parts clamping fixture according to claim 2, characterized in that: The first transmission device includes a transmission rod (7) and a transmission gear (6). One side of the transmission rod (7) is connected to the dust brush (8), and the other side of the transmission rod (7) is provided with a first set of teeth that can mesh with the transmission gear (6). The guide rod (5) is provided with a second set of teeth that mesh with the transmission gear (6). The guide rod (5) and the transmission rod (7) are arranged in parallel and are located on both sides of the transmission gear (6). The transmission gear (6) is rotatably connected to the worktable (1).

6. The automotive parts clamping fixture according to claim 5, characterized in that: It also includes two sets of positioning units, which are used to position one side of the automotive part (2). The positioning units correspond one-to-one with the clamping units. Each set of positioning units includes a positioning block (19) and a second transmission device. The worktable (1) is provided with receiving grooves on both sides. The positioning block (19) is vertically slidably connected in the receiving groove. A spring (20) is provided between the bottom of the positioning block (19) and the receiving groove. Under the elastic force of the spring (20), the top of the positioning block (19) can extend out of the receiving groove. The clamping unit drives the positioning block (19) to move vertically through the second transmission device. When the guide rod (5) of the clamping unit moves towards the automotive part (2), the clamping unit drives the positioning block (19) to move downward and retract into the receiving groove through the second transmission device.

7. The automotive parts clamping fixture according to claim 3, characterized in that: The end of the guide rod (5) is connected to the piston plate (13).

8. The automotive parts clamping fixture according to claim 4, characterized in that: The delivery pipe (17) can deform to change the position of the nozzle (18).

9. The automotive parts clamping fixture according to claim 6, characterized in that: The second transmission device includes a transmission rope (21), one side of which is connected to the bottom of the positioning block (19), and the other side is wound around the central shaft (11) of the transmission gear (6).

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