Automobile part bending device

Abstract

The utility model belongs to the field of workpiece machining, and particularly relates to an automobile part bending device which comprises a workbench, a lower die and an upper die, the lower die is fixedly connected to the workbench, a rack is fixedly connected to the top of the workbench, a first hydraulic cylinder is fixedly connected to the top of the rack, and the upper die is fixedly connected to the output end of the first hydraulic cylinder; a pair of supports are fixedly connected to the bottom of the workbench and located on the two sides of the lower die, rotating shafts are rotationally connected to the supports, fixing arms are fixedly connected to the rotating shafts, and when the device is used, the second hydraulic cylinders push the supports to move upwards, the supports move upwards to push the crank bases to rotate, and therefore the rotating shafts and the fixing arms rotate; the two fixing arms rotate, the top ends of the fixing arms press and fix the workpiece, so that the end of the workpiece is fixed, the situation that the workpiece deviates and shakes in the bending forming process is reduced, and the bending forming precision can be improved conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece processing field, concretely is a kind of automobile parts bending device. BACKGROUND

[0002] Automobile parts are the general term of each component and part constituting automobile whole.

[0003] At present in prior art, automobile partial metal parts need to use bending device to be bent into shape, bending device has multiple, one kind of bending device is relied on two moulds cooperation, and is bent into shape by two moulds, to drive mould to move by relying on hydraulic cylinder, which is installed in the side surface of the mould.

[0004] But workpiece is easy to shake in bending process, and then it will affect the precision of workpiece bending into shape;Therefore, aiming at the above problem, an automobile parts bending device is provided. INVENTION CONTENTS

[0005] In order to make up for the deficiency of prior art, solve at least one technical problem proposed in the background art, the utility model provides an automobile parts bending device.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: the utility model discloses an automobile parts bending device, which comprises a workbench, a lower die and an upper die, the lower die is fixedly connected to the workbench, the top of the workbench is fixedly connected with a rack, the top of the rack is fixedly connected with a first hydraulic cylinder, and the upper die is fixedly connected to the output end of the first hydraulic cylinder;The bottom of the workbench is fixedly connected with a pair of supports, and the pair of supports are located on the two sides of the lower die, the support is rotatably connected with a rotating shaft, the rotating shaft is fixedly connected with a fixed arm, and a driving assembly for rotating the fixed arm is arranged below the workbench.

[0007] Preferably, the driving assembly comprises a second hydraulic cylinder, a bracket and a crank seat, the crank seat is fixedly connected to the end of the rotating shaft, the side surface of the crank seat is fixedly connected with a shaft rod, the second hydraulic cylinder is installed below the workbench, the bracket is fixedly connected to the output end of the second hydraulic cylinder, a pair of sliding grooves are formed in the bracket, and the shaft rod is inserted into the sliding grooves and connected with them in sliding mode.

[0008] Preferably, a plurality of sliding cylinders are fixedly connected to the rack, a guide rod is slidably connected in the sliding cylinder, the bottom end of the guide rod is fixedly connected with the upper die, a support rod is fixedly connected to the lower die, and the support rod penetrates through the bracket and is connected with it in sliding mode.

[0009] Preferably, the side of the workbench is fixedly connected with a motor, the output end of the motor is fixedly connected with a lead screw, the lead screw is connected with a moving seat through a ball screw nut pair, the moving seat and the workbench are in sliding connection, the top of the moving seat is fixedly connected with a push block, the top side of the workbench is fixedly connected with a positioning block, and the positioning block and the push block are located at the two ends of the lower die respectively.

[0010] Preferably, the top end of the fixed arm is fixedly connected with a friction pad, and the friction pad is made of hard rubber material.

[0011] Preferably, the two ends of the bracket are a pair of the sliding grooves, and the top end of the fixed arm is located above the lower die.

[0012] The utility model discloses the beneficial effect lies in:

[0013] 1. The utility model discloses a fixed arm, support, pivot, crank holder, axle, strut and second hydraulic cylinder are set up, when using, the second hydraulic cylinder is started, and the second hydraulic cylinder promotes the bracket to go up, and the bracket goes up and will promote the crank holder to rotate, and the axle on the crank holder slides in the sliding groove, to this to make the pivot and fixed arm rotate, and the fixed arm top end presses fixed workpiece by relying on two fixed arms rotation, to this workpiece's end portion is fixed to reduce in the bending forming process, and the workpiece shifts and shakes, to this can conveniently improve the precision of bending forming.

[0014] 2. The utility model discloses a friction pad is set up, when using, relying on setting up the friction pad, to this can increase the friction between the fixed arm top end and workpiece surface, to can improve the fixed effect. ACCURACY

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the rack structure schematic diagram of the utility model;

[0018] Figure 3 It is the lower die bottom structure schematic diagram of the utility model;

[0019] Figure 4 It is the lower die and upper die structure schematic diagram of the utility model;

[0020] Figure 5 It is the structural schematic view of the fixed arm of the utility model.

[0021] In the figure: 11, workbench; 12, rack; 13, first hydraulic cylinder; 14, upper die; 15, lower die; 16, support; 17, rotating shaft; 18, fixed arm; 21, second hydraulic cylinder; 22, support; 23, crank base; 24, shaft rod; 31, sliding cylinder; 32, guide rod; 33, support rod; 41, motor; 42, screw rod; 43, moving seat; 44, push block; 45, positioning block; 5, friction pad; 7, pulley. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] The specific embodiments are given below.

[0024] Please refer to Figures 1-5 As shown in the figure, an automobile part bending device, including workbench 11, lower die 15 and upper die 14, the lower die 15 is fixedly connected on workbench 11, the top of workbench 11 is fixedly connected with rack 12, the top of rack 12 is fixedly connected with first hydraulic cylinder 13, and upper die 14 is fixedly connected on the output end of first hydraulic cylinder 13;The bottom of workbench 11 is fixedly connected with a pair of supports 16, and a pair of supports 16 is located on the both sides of lower die 15, and rotating shaft 17 is rotatably connected on support 16, and fixed arm 18 is fixedly connected on rotating shaft 17, and drive assembly capable of rotating fixed arm 18 is arranged below workbench 11;The drive assembly includes second hydraulic cylinder 21, support 22 and crank base 23, the end of rotating shaft 17 is fixedly connected with crank base 23, the side of crank base 23 is fixedly connected with shaft rod 24, second hydraulic cylinder 21 is installed below workbench 11, support 22 is fixedly connected on the output end of second hydraulic cylinder 21, a pair of sliding grooves are formed on support 22, and shaft rod 24 is inserted into the sliding grooves and is slidably connected with the sliding grooves;A pair of sliding grooves are the both ends of support 22, and the top end of fixed arm 18 is located above lower die 15;

[0025] In use, the workpiece is placed above the lower mold 15, and then the upper mold 14 is moved down by the first hydraulic cylinder 13. The upper mold 14 and the lower mold 15 work together to squeeze and form the workpiece. Before bending, the second hydraulic cylinder 21 is activated, which pushes the bracket 22 up. The upward movement of the bracket 22 will push the crank seat 23 to rotate, and the shaft 24 on the crank seat 23 will slide in the groove, thereby causing the rotating shaft 17 and the fixed arm 18 to rotate. With the rotation of the two fixed arms 18, the top of the fixed arm 18 presses and fixes the workpiece, thereby fixing the end of the workpiece and reducing the workpiece's displacement and shaking during the bending process, thus improving the bending accuracy.

[0026] Furthermore, such as Figures 1-2 As shown, multiple sliding cylinders 31 are fixedly connected to the frame 12. Guide rods 32 are slidably connected inside the sliding cylinders 31. The bottom end of the guide rods 32 is fixedly connected to the upper mold 14. A support rod 33 is fixedly connected to the lower mold 15. The support rod 33 passes through the bracket 22 and is slidably connected to it. In use, the guide rods 32 slide inside the sliding cylinders 31 on the frame 12. The stability of the upper mold 14 moving up and down can be improved by setting the guide rods 32. The support rods 33 can guide the bracket 22 and improve its stability.

[0027] Furthermore, such as Figures 1-3 As shown, a motor 41 is fixedly connected to the side of the worktable 11, and a lead screw 42 is fixedly connected to the output end of the motor 41. A movable seat 43 is connected to the lead screw 42 through a ball screw nut pair. The movable seat 43 is slidably connected to the worktable 11. A push block 44 is fixedly connected to the top of the movable seat 43. A positioning block 45 is fixedly connected to the top side of the worktable 11. The positioning block 45 and the push block 44 are located at the two ends of the lower mold 15, respectively.

[0028] In use, after the workpiece is placed above the lower mold 15, the motor 41 is started. The motor 41 is preferably a servo motor 41. The servo motor 41 drives the lead screw 42 to rotate. The rotation of the lead screw 42 drives the moving seat 43 to move on the worktable 11. The moving seat 43 drives the push block 44 to move. The workpiece can be positioned by the positioning blocks 45 at both ends of the lower mold 15 and the movable push block 44, thereby improving the workpiece forming accuracy.

[0029] Furthermore, such as Figure 5 As shown, a friction pad 5 is fixed to the top of the fixed arm 18, and the friction pad 5 is made of hard rubber.

[0030] When in use, by setting the friction pad 5, the friction between the top of the fixing arm 18 and the workpiece surface can be increased, thereby improving the fixing effect and reducing wear. After applying oil to the workpiece surface to reduce mold wear, the friction pad 5 can increase the friction to a certain extent, which facilitates fixing.

[0031] Furthermore, such as Figure 4 As shown, a pulley 7 is rotatably connected to the shaft 24. By setting the pulley 7 and installing it in the slide groove, the friction can be reduced by the rolling friction between the pulley 7 and the slide groove.

[0032] Working principle: During use, the workpiece is placed above the lower mold 15. Then, the first hydraulic cylinder 13 drives the upper mold 14 to move downward. The upper mold 14 and the lower mold 15 work together to extrude and bend the workpiece. Before bending, the second hydraulic cylinder 21 is activated, pushing the support 22 upward. The upward movement of the support 22 will drive the crank seat 23 to rotate, and the shaft 24 on the crank seat 23 will slide in the slide groove, thereby causing the rotating shaft 17 and the fixed arm 18 to rotate. With the rotation of the two fixed arms 18, the top of the fixed arm 18 presses and fixes the workpiece, thereby fixing the end of the workpiece and reducing the workpiece's displacement and shaking during the bending process. Therefore, it can improve the bending accuracy. During use, the guide rod 32 slides inside the slide cylinder 31 on the frame 12, relying on... The guide rod 32 improves the stability of the upper mold 14's vertical movement. The support rod 33 guides the bracket 22, further enhancing stability. After the workpiece is placed above the lower mold 15, the motor 41 (preferably a servo motor) is started, driving the lead screw 42 to rotate. The rotation of the lead screw 42 drives the moving seat 43 to move on the worktable 11. The moving seat 43 moves the push block 44. The positioning blocks 45 at both ends of the lower mold 15 and the movable push block 44 are used to position the workpiece, improving its forming accuracy. The friction pad 5 increases the friction between the top of the fixed arm 18 and the workpiece surface, improving the fixing effect and reducing wear. After applying oil to the workpiece surface to reduce mold wear, the friction pad 5 increases friction, facilitating fixing.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A bending device for automotive parts, comprising a worktable (11), a lower die (15), and an upper die (14), wherein the lower die (15) is fixedly connected to the worktable (11), a frame (12) is fixedly connected to the top of the worktable (11), a first hydraulic cylinder (13) is fixedly connected to the top of the frame (12), and the upper die (14) is fixedly connected to the output end of the first hydraulic cylinder (13); characterized in that: A pair of supports (16) are fixedly connected to the bottom of the worktable (11). The pair of supports (16) are located on both sides of the lower mold (15). A rotating shaft (17) is rotatably connected to the support (16). A fixed arm (18) is fixedly connected to the rotating shaft (17). A drive assembly that enables the fixed arm (18) to rotate is provided below the worktable (11).

2. The automotive parts bending device according to claim 1, characterized in that: The drive assembly includes a second hydraulic cylinder (21), a bracket (22), and a crank seat (23). The crank seat (23) is fixed to the end of the rotating shaft (17). A shaft (24) is fixed to the side of the crank seat (23). The second hydraulic cylinder (21) is installed below the worktable (11). The bracket (22) is fixed to the output end of the second hydraulic cylinder (21). A pair of sliding grooves are provided on the bracket (22). The shaft (24) is inserted into the sliding grooves and slidably connected thereto.

3. The automotive parts bending device according to claim 2, characterized in that: Multiple slide cylinders (31) are fixedly connected to the frame (12). A guide rod (32) is slidably connected inside the slide cylinder (31). The bottom end of the guide rod (32) is fixedly connected to the upper mold (14). A support rod (33) is fixedly connected to the lower mold (15). The support rod (33) passes through the bracket (22) and is slidably connected to it.

4. The automotive parts bending device according to claim 3, characterized in that: A motor (41) is fixedly connected to the side of the worktable (11). A lead screw (42) is fixedly connected to the output end of the motor (41). A movable seat (43) is connected to the lead screw (42) through a ball screw nut pair. The movable seat (43) and the worktable (11) are slidably connected. A push block (44) is fixedly connected to the top of the movable seat (43). A positioning block (45) is fixedly connected to the top side of the worktable (11). The positioning block (45) and the push block (44) are located at the two ends of the lower mold (15), respectively.

5. The automotive parts bending device according to claim 4, characterized in that: The top end of the fixed arm (18) is fixed with a friction pad (5), which is made of hard rubber.

6. The bending device for automotive parts according to claim 5, characterized in that: The pair of grooves are at both ends of the bracket (22), and the top of the fixed arm (18) is located above the lower mold (15).

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