Automobile tire mold edge rolling process and edge rolling equipment

Abstract

The invention relates to an automobile tire mold edge rolling technology and edge rolling equipment, and belongs to the technical field of automobile edge rolling. The automobile tire mold edge rolling technology comprises the steps that S1, discharging is conducted, specifically, a robot gripper clamps an automobile part, and the automobile part is movably placed on a tire mold pier; s2, positioning is conducted, specifically, the edge of the turning part is clamped and fixed through an angle pushing mechanism; s3, pre-pushing is conducted, specifically, a pre-pushing mechanism conducts pre-pushing edge rolling on the edge of the turned part, and pre-adjustment of the edge rolling angle of the turned part is achieved; and S4, edge rolling is conducted, specifically, the pre-pushing mechanism is moved away, after the angle of the edge of the turned part is pre-adjusted, the material pressing mechanism moves, and the edge of the turned part is subjected to edge rolling machining through the edge rolling mechanism. When the turning part needs to be subjected to large-angle edge rolling machining, the edge rolling angle is pre-adjusted through the pre-pushing mechanism, so that the edge rolling frequency in the follow-up edge rolling procedure is reduced as much as possible and kept consistent, damage to the turning part is reduced, and meanwhile the consistency of the edge rolling machining precision is improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive hemming, and in particular to an automotive die hemming process and hemming equipment. Background Art

[0002] The automotive hemming process refers to a technology for processing and treating the edges of a vehicle body during automotive manufacturing. It mainly makes the edges of the vehicle body smoother and more beautiful through operations such as curling and pressing on the edges of the vehicle body, and can improve the structural strength and safety performance of the vehicle body.

[0003] Traditional hemming equipment includes a die bolster, a positioning unit, a corner pusher unit, a hemming unit, a pressing tool, etc. The gripper moves the workpiece to the die bolster, and after being clamped and positioned by the cooperation of the positioning unit and the pressing tool, the gripper is demolded. Then the corner pusher unit presses against the edge of the vehicle body, and the hemming unit performs hemming and pressing on the workpiece.

[0004] Currently, the standards for multiple dimensions such as the angle, appearance, and quality of automotive hemming are constantly improving. When performing large-angle hemming on the edge of the vehicle body, due to the limitation of the hemming angle in each step, it is necessary to perform hemming 4 to 5 times. Due to too many hemming times, the hemming fillet is prone to cracks due to stress accumulation and the ductility limitation of the workpiece itself, which cannot be repaired. At the same time, the traditional hemming unit cannot accurately adjust and correct the angle, resulting in incomplete hemming processing. Summary of the Invention

[0005] In order to improve the problem that the angle of the workpiece product is too large, and the traditional hemming unit cannot accurately adjust and correct the angle, resulting in incomplete hemming processing, this application provides an automotive die hemming process and hemming equipment.

[0006] An automotive die hemming process provided by this application adopts the following technical solutions: An automotive die hemming process includes the following steps: S1: Feeding: The robot gripper clamps the workpiece and moves it to the die bolster for placement. S2: Positioning: The corner pusher mechanism clamps and fixes the edge of the workpiece. S3: Pre-pushing: The pre-pushing mechanism performs pre-pushing hemming on the edge of the workpiece to achieve pre-adjustment of the hemming angle of the workpiece edge. S4: Hemming: After the pre-pushing mechanism moves away and the angle of the workpiece edge is pre-adjusted, the blank holding mechanism moves, and the hemming mechanism performs hemming processing on the edge of the workpiece.

[0007] Preferably, the following steps are further included in the above S1: S1-1: Pressing: The blank holding mechanism presses the workpiece against the die bolster along the edge of the upper surface of the workpiece for one week. S1-2: Separation: The robot body disengages from the robot gripper, the robot body moves away, and the robot gripper presses on the vehicle part.

[0008] Preferably, the above S3 further includes the following steps: S3-1: Energy supply: The power mechanism is connected to the blank holding mechanism to provide power for the blank holding mechanism; S3-2: Displacement: The blank holding mechanism moves, the blank holding mechanism cooperates with the pre-pushing mechanism, the pre-pushing mechanism pre-pushes and rolls the edge of the vehicle part, and the blank holding mechanism limits the pre-pushing angle of the pre-pushing mechanism.

[0009] An automobile die hemming device further includes a base. The die block is arranged on the base. A plurality of support blocks and support members are arranged on the die block. The support blocks are connected to the die block through the support members. A through hole is formed along the circumference of the die block, and the support blocks pass through the through hole. The support blocks are in contact with the lower surface of the vehicle part, and the support blocks are made of flexible materials.

[0010] Preferably, the support member includes a support connecting plate, a V-shaped adapter plate and a universal ball. The support connecting plate is arranged on the outer wall of the die block. One side plate surface of the V-shaped adapter plate is connected to the support connecting plate by bolts. A locking buckle is arranged on the other side plate surface of the V-shaped adapter plate. The universal ball is movably arranged in the locking buckle. A support rod is arranged in the universal ball. One end of the support rod is provided with the support block.

[0011] Preferably, the robot gripper includes a blank holding frame and a gun changer. The gun changer is arranged on the blank holding frame. The blank holding mechanism includes a fixed pressing block and a fixed connecting piece. The fixed pressing block is connected to the blank holding frame through the fixed connecting piece. A plurality of fixed pressing blocks are provided. The plurality of fixed pressing blocks are pressed on the vehicle part along the upper edge of the vehicle part in a circle.

[0012] Preferably, the blank holding mechanism further includes a movable member. The movable member includes a movable pressing block and a movable driving source. The movable driving source is arranged on the blank holding frame. The movable pressing block is arranged at the output end of the movable driving source. The power mechanism is used to provide pneumatic and electric power for the driving source. The movable pressing block and the fixed pressing block cooperate to press on the vehicle part along the edge of the vehicle part in a circle. The operation of the movable driving source drives the movable pressing block to move relative to the vehicle part.

[0013] Preferably, the power mechanism includes a power support and a power connecting piece. The power support is arranged on the base. The power connecting piece is arranged on the power support. A plug hole is formed in the power connecting piece. A plug pin is arranged on the movable driving source. The plug hole is used for the plug pin to be inserted and connected. The power connecting piece and the movable driving source are detachably connected.

[0014] Preferably, the pre-pushing mechanism includes a pre-pushing drive and a pre-pushing member. The pre-pushing drive is arranged on the base, and the pre-pushing member is arranged at the output end of the pre-pushing drive. The pre-pushing member is used for pre-pushing and curling the edge of the vehicle part, and the side of the pre-pushing member that fits the vehicle part is shaped accordingly.

[0015] Preferably, the corner-pushing mechanism includes a corner-pushing drive and a corner-pushing block. The corner-pushing drive is arranged on the base, and the corner-pushing block is arranged at the output end of the corner-pushing drive. The contour of the side of the corner-pushing block that abuts against the edge of the vehicle part is shaped according to the edge of the vehicle part.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the pre-pushing mechanism, when the vehicle part needs to be processed with a large-angle curling, the pre-pushing mechanism is used to pre-adjust the curling angle first, so as to reduce the number of curling times as much as possible and keep them consistent in the subsequent curling process, reduce the damage to the vehicle part itself, and at the same time is beneficial to improving the consistency of the curling processing accuracy; 2. Through the setting of the fixed pressing block and the movable pressing block, after the vehicle part is accurately positioned and placed on the die block, the fixed pressing block and the movable pressing block are pressed on the vehicle part to ensure the position stability of the vehicle part in the subsequent pre-pushing and curling processing. During the pre-pushing process, the movable pressing block cooperates with the pre-pushing mechanism, and the movable pressing block provides a limit for the pre-pushing angle of the pre-pushing mechanism. After pre-pushing, the movable pressing block displaces, facilitating the formal curling processing of the vehicle part by the curling mechanism, making the equipment highly automated and beneficial to improving the production rhythm; 3. Through the setting of the power mechanism, the robot gripper selects a device that combines grasping and pressing. After the vehicle part is placed in place, the robot gripper is separated from the robot main body. The vehicle part is clamped and positioned through the pressing frame and the pressing mechanism, and then the power mechanism provides power for the movable pressing block to drive the movable pressing block to move. There is no need for manual participation, and the cooperation between the various mechanisms is high, further realizing the automation of the curling processing and greatly improving the production rhythm. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the automotive die curling equipment in the embodiment of the present application.

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in

[0019] Figure 3 is Figure 1 a partial enlarged view of part B in

[0020] Figure 4 is Figure 1 a partial enlarged view of part C in

[0021] Figure 5This is a schematic cross-sectional view of the power mechanism shown in the embodiments of the present application.

[0022] Explanation of reference numerals: 1, base; 2, die block; 21, support block; 22, support connecting plate; 23, V-shaped adapter plate; 24, universal ball; 25, support rod; 26, through hole; 3, positioning mechanism; 31, positioning column; 32, positioning plug; 40, gun changer; 41, blank holder; 42, fixed pressing block; 43, fixed connecting piece; 431, first fixing plate; 432, second fixing plate; 433, adjusting gasket; 44, movable pressing block; 45, movable driving source; 46, connecting rod; 47, insertion pin; 5, angle pushing mechanism; 51, angle pushing drive; 52, angle pushing block; 6, pre-pushing mechanism; 61, pre-pushing drive; 62, pre-pushing member; 7, power mechanism; 71, power support; 72, power connecting piece; 73, insertion hole. Detailed implementation manners

[0023] The following further elaborates on the present application in conjunction with the attached Figures 1-5 drawings.

[0024] The embodiments of the present application disclose an automobile die hemming process and hemming equipment. Referring to Figure 1 , an automobile die hemming process, and the hemming equipment applied in the process include: S1: Loading: The robot gripper clamps the vehicle part and moves and places the vehicle part on the die block 2. Referring to Figure 1 , the hemming equipment further includes a base 1, and the die block 2 is arranged on the base 1. The robot gripper is of a combined pressing and gripping type. The robot gripper is used to achieve the gripping function, grasp the vehicle part, carry it and place it on the die block 2. Then, the robot gripper is separated from the robot main body. At this time, the robot gripper is used to achieve the blank holding function, press the vehicle part on the die block 2 to fix the position of the vehicle part, so as to keep the vehicle part stable during subsequent processing.

[0025] Referring to Figure 1 and 2 , a number of support blocks 21 and support members are provided on the die block 2. The support members include a support connecting plate 22, a V-shaped adapter plate 23 and a universal ball 24. The support connecting plate 22 is fixedly arranged on the outer wall of the die block 2. One side plate surface of the V-shaped adapter plate 23 is connected to the support connecting plate 22 by bolts. A locking buckle is fixedly connected to the other side plate surface of the V-shaped adapter plate 23. The universal ball 24 is movably arranged in the locking buckle. A support rod 25 is inserted into the universal ball 24. One end of the support rod 25 is fixedly connected to the support block 21. The support block 21 is made of a flexible material. Specifically, the support block 21 is a telescopic flexible suction cup. A number of through holes 26 are formed in a circle along the die block 2. The through holes 26 are for the support blocks 21 to pass through. When the robot gripper places the vehicle part on the die block 2, the support blocks 21 abut against the lower surface of the vehicle part.

[0026] S1-1: Pressing: The pressing mechanism presses the part against the membrane pier 2 along the edge of the upper surface of the part; S1-2: Separation: The robot body and the robot gripper are separated, the robot body moves away, and the robot gripper is pressed on the vehicle part; Reference Figure 1 and 3 , multiple positioning mechanisms 3 are arranged around the base 1, specifically, the positioning mechanisms 3 are arranged in four groups, and the positioning mechanisms 3 include positioning columns 31 and positioning rods 32, the positioning columns 31 are fixedly connected to the base 1, and the positioning rods 32 are connected to the robot gripper. According to the preset positioning accuracy, after the PLC setting, when the robot gripper carries the vehicle part and moves to the top of the fetal membrane pier 2, the positioning rods 32 are inserted into the positioning columns 31 to achieve positioning, and then the robot gripper moves toward the fetal membrane pier 2 and places the vehicle part on the fetal membrane pier 2. The robot gripper includes a gun changing plate 40 and a material pressing frame 41, the gun changing plate 40 is fixedly connected to the material pressing frame 41, and the gun changing plate 40 is detachably connected to the robot body, so as to realize the separation of the robot gripper and the robot body. The material pressing mechanism includes a fixed pressing block 42 and a fixed connecting member 43. The fixed connecting member 43 includes a fixed plate 1 431, a fixed plate 2 432 and an adjusting gasket 433. The fixed plate 1 431 is connected to the side of the material pressing frame 41 away from the gun changing plate 40 by bolts. The adjusting gasket 433 is arranged between the fixed plate 1 431 and the fixed plate 2 432. The number of the adjusting gasket 433 is set to at least one. Before operation, the number of the connected adjusting gaskets 433 is adjusted according to the requirements of the machined parts to be processed. The fixed pressing block 42 is connected to the fixed plate 2 432 by bolts. There are a plurality of fixed pressing blocks 42, and the plurality of fixed pressing blocks 42 are pressed on the machined parts along the upper edge of the machined parts to maintain the stable position of the machined parts.

[0027] S2: Positioning: The angle push mechanism 5 clamps and fixes the edge of the part; Reference Figure 1 and 4 , there are several corner push mechanisms 5, and the specific number can be selected according to the outer edge contour shape of the lathe part to be processed. The corner push mechanism 5 includes an angle push drive 51 and an angle push block 52. The angle push drive 51 is fixedly connected to the base 1 and is located on the circumference of the fetal membrane 2. The angle push block 52 is fixedly connected to the output end of the angle push drive 51 by bolts. The side contour of the angle push block 52 abuts against the edge of the lathe part and is set according to the edge profiling of the lathe part, so that the angle push block 52 fits the outer edge contour of the lathe part, which is beneficial to improve the stability of the lathe part. The cooperation between the angle push mechanism 5 and the pressing mechanism can further reduce the possibility of displacement and shaking of the lathe part during the rolling process. The angle push block 52 can be customized according to the edge shape of the lathe part to be processed. Therefore, the angle push block 52 can be replaced at will, making the equipment more adaptable.

[0028] S3: Pre-pushing: The pre-pushing mechanism 6 pre-pushes and rolls the edge of the vehicle part to achieve pre-adjustment of the rolling angle of the vehicle part edge; Refer to Figure 1 and 4 , the pre-pushing mechanism 6 includes a pre-pushing drive 61 and a pre-pushing member 62. The pre-pushing drive 61 is fixedly connected to the base 1, and the pre-pushing member 62 is connected to the output end of the pre-pushing drive 61. The pre-pushing member 62 is used to pre-push and roll the edge of the vehicle part, and one side of the pre-pushing member 62 that fits the vehicle part is shaped accordingly. Multiple pre-pushing mechanisms 6 can be set according to the model and size of the vehicle part to be processed.

[0029] S3-1: Energy supply: The power mechanism 7 is connected to the blank-holding mechanism to provide power for the blank-holding mechanism; S3-2: Displacement: The blank-holding mechanism moves. The blank-holding mechanism cooperates with the pre-pushing mechanism 6, and the pre-pushing mechanism 6 pre-pushes and rolls the edge of the vehicle part. The blank-holding mechanism limits the pre-pushing angle of the pre-pushing mechanism 6; Refer to Figure 1 and 4 , the blank-holding mechanism further includes a movable part. The movable part includes a movable pressing block 44 and a movable drive source 45. The movable drive source 45 is fixedly connected to the blank-holding frame 41, and the movable pressing block 44 is fixedly connected to the output end of the movable drive source 45. The movable pressing block 44 and the fixed pressing block 42 cooperate to press on the vehicle part along the edge of the vehicle part for one week. The movable drive source 45 is a cylinder, and a connecting rod 46 is arranged on the cylinder block of the cylinder. A plug pin 47 is fixedly arranged at one end of the connecting rod 46 away from the cylinder.

[0030] Refer to Figure 1 and 5 , the power mechanism 7 includes a power support 71 and a power connecting member 72. The power support 71 is fixed to the base 1, and the power connecting member 72 is arranged on the power support 71. The power connecting member 72 is used to provide pneumatic and electric power for the drive source. A plug hole 73 is opened on the power connecting member 72 for the plug pin 47 to be inserted and connected. When the robot gripper carries the vehicle part and moves above the die block 2, after being positioned by multiple positioning mechanisms 3, synchronously, the plug pin 47 and the plug hole 73 are aligned. Then, when the robot gripper carries the vehicle part and moves towards the die block 2, the plug pin 47 and the plug hole 73 are inserted and positioned, and then the power connecting member 72 can provide power for the movable drive source 45.

[0031] Refer to Figure 1, when the movable pressing block 44 is in the initial position, it cooperates with the pre-pushing member 62 to limit the pre-pushing angle of the pre-pushing member 62, improving the accuracy of the pre-pushing angle range. Then the robot main body is separated from the robot gripper, the robot gripper is powered off, and the power mechanism 7 provides power for the movement of the movable pressing block 44. After the pre-pushing process is completed, the pre-pushing member 62 retracts, and according to the PLC preset program, the movable pressing block 44 displaces relative to the vehicle part to facilitate the subsequent formal hemming process steps.

[0032] S4: Hemming: The pre-pushing mechanism 6 is moved away. After the edge angle of the vehicle part is pre-adjusted, the blank holding mechanism moves, and the hemming mechanism performs hemming processing on the edge of the vehicle part.

[0033] The implementation principle of an automotive die hemming process and the hemming equipment applied in the process in the embodiment of the present application is as follows: The robot gripper moves the vehicle part to be processed above the die pier 2. After being positioned by a plurality of positioning mechanisms 3, the robot gripper drives the vehicle part to move towards the die pier 2, synchronously realizing the insertion of the insertion pin 47 into the insertion hole 73. After the vehicle part is placed in place, the robot gripper is separated from the robot main body. The fixed pressing block 42 and the movable pressing block 44 cooperate to press the upper surface edge of the vehicle part for one week, and cooperate with the pre-pushing mechanism 6 and the hemming mechanism to perform hemming processing on the vehicle part, which is not only beneficial to protecting the vehicle part itself from external force damage, but also effectively guarantees the accuracy of the hemming angle. The setting of the power mechanism 7 can greatly improve the automation level of the vehicle part hemming process and effectively improve the production beat.

[0034] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A process for rolling the tire membrane of an automobile, characterized in that: include: Here are the steps: S1: Unloading: The robot gripper holds the machined part and moves it to place it on the membrane pier (2); S2: Positioning: The corner push mechanism (5) clamps and fixes the edge of the machined part; S3: Pre-pushing: The pre-pushing mechanism (6) pre-pushes the edge of the machined part to roll the edge, thereby pre-adjusting the rolling angle of the edge of the machined part; S4: Rolling: The pre-pushing mechanism (6) moves away, and after the edge angle of the machined part is pre-adjusted, the pressing mechanism moves, and the rolling mechanism performs rolling processing on the edge of the machined part.

2. The automobile tire membrane rolling process according to claim 1, characterized in that: The above S1 also includes the following steps: S1-1: Pressing: The pressing mechanism presses the part against the membrane pier (2) along the edge of the upper surface of the part; S1-2: Separation: The robot body is separated from the robot gripper, the robot body moves away, and the robot gripper is pressed onto the vehicle part.

3. The automobile tire membrane rolling process according to claim 1, characterized in that: The above S3 also includes the following steps: S3-1: Energy supply: the power mechanism (7) is connected to the material pressing mechanism to provide power for the material pressing mechanism; S3-2: Displacement: The pressing mechanism moves, the pressing mechanism cooperates with the pre-pushing mechanism (6), the pre-pushing mechanism (6) pre-pushes the edge of the machined part, and the pressing mechanism limits the pre-pushing angle of the pre-pushing mechanism (6).

4. An automobile tire membrane rolling device, applied to the automobile tire membrane rolling process described in any one of claims 1 to 3, characterized in that: It also includes a base (1), the fetal membrane pier (2) is arranged on the base (1), and a plurality of support blocks (21) and support members are arranged on the fetal membrane pier (2), and the support blocks (21) are connected to the fetal membrane pier (2) through the support members, and a through hole (26) is opened around the upper edge of the fetal membrane pier (2), and the through hole (26) is for the support block (21) to pass through, and the support block (21) is in contact with the lower surface of the vehicle part, and the support block (21) is made of a flexible material.

5. The automobile tire membrane rolling device according to claim 4, characterized in that: The support member comprises a support connecting plate (22), a V-shaped adapter plate (23) and a universal ball (24); the support connecting plate (22) is arranged on the outer wall of the fetal membrane pier (2); one side plate surface of the V-shaped adapter plate (23) is connected to the support connecting plate (22) by bolts; the other side plate surface of the V-shaped adapter plate (23) is provided with a locking buckle; the universal ball (24) is movably arranged in the locking buckle; a support rod (25) is passed through the universal ball (24); and the support block (21) is arranged at one end of the support rod (25).

6. The automobile tire membrane rolling process according to claim 3, characterized in that: The robot gripper comprises a material pressing frame (41) and a gun changing plate (40), wherein the gun changing plate (40) is arranged on the material pressing frame (41), and the material pressing mechanism comprises a fixed pressing block (42) and a fixed connecting member (43), wherein the fixed pressing block (42) is connected to the material pressing frame (41) via the fixed connecting member (43), and a plurality of the fixed pressing blocks (42) are provided, and the plurality of the fixed pressing blocks (42) are pressed onto the lathe part along an upper edge of the lathe part.

7. The automobile tire membrane rolling device according to claim 6, characterized in that: The material pressing mechanism also includes a movable part, which includes a movable pressing block (44) and a movable driving source (45). The movable driving source (45) is arranged on the material pressing frame (41), and the movable pressing block (44) is arranged at the output end of the movable driving source (45). The power mechanism (7) is used to provide gas and electric power to the driving source. The movable pressing block (44) cooperates with the fixed pressing block (42) to be pressed on the lathe part along the edge of the lathe part, and the movable driving source (45) drives the movable pressing block (44) to move relative to the lathe part.

8. The automobile tire membrane rolling device according to claim 7, characterized in that: The power mechanism (7) comprises a power support (71) and a power connecting member (72); the power support (71) is arranged on the base (1); the power connecting member (72) is arranged on the power support (71); a plug hole (73) is provided on the power connecting member (72); a plug pin (47) is provided on the movable driving source (45); the plug hole (73) is for the plug pin (47) to be inserted and connected; the power connecting member (72) and the movable driving source (45) are detachably connected.

9. The automobile tire membrane rolling device according to claim 3, characterized in that: The pre-pushing mechanism (6) comprises a pre-pushing drive (61) and a pre-pushing member (62), wherein the pre-pushing drive (61) is arranged on the base (1), and the pre-pushing member (62) is arranged at the output end of the pre-pushing drive (61), and the pre-pushing member (62) is used to pre-push the edge of the lathe part, and the pre-pushing member (62) is arranged to imitate the side of the lathe part that is in contact with the lathe part.

10. The automobile tire membrane rolling device according to claim 1, characterized in that: The angle push mechanism (5) comprises an angle push drive (51) and an angle push block (52); the angle push drive (51) is arranged on a base (1); the angle push block (52) is arranged at the output end of the angle push drive (51); the angle push block (52) abuts against a side contour of an edge of a lathe part and is arranged according to the edge contour of the lathe part.

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