Mechanical gripper for vehicle body welding

Abstract

The utility model relates to a mechanical gripper, in particular to a mechanical gripper for welding a vehicle body. The utility model provides the mechanical gripper for welding the vehicle body, which can be used for automatically arranging and flattening metal plates for welding the vehicle body. A mechanical gripper used for vehicle body welding comprises a mounting base, a double-row rack, clamping arms, anti-slip strips, a leveling assembly and the like, the anti-slip strips are arranged on the opposite sides of the two clamping arms, and a mechanical gripper capable of automatically pushing and flattening the side edge of a welded metal plate and automatically pushing and flattening the side edge of the welded metal plate is arranged between the mounting base and the double-row rack. And the leveling assembly is used for accurately welding the leveled and aligned objects. Before the automobile body metal plates are clamped and welded, the clamping arms and the anti-slip strips are controlled to be mutually opened, and the side edges and corners of the metal plates can be automatically pushed and flattened under the matching action of the rollers, the top blocks and the arrangement blocks, so that the two metal plates needing to be welded can be completely matched and aligned.

Description

Technical Field

[0001] The utility model relates to a mechanical gripper, in particular to a mechanical gripper used for welding of vehicle bodies. Background Art

[0002] During the welding process of the car body, a robotic arm is required to clamp two independent metal sheets through a mechanical gripper and then weld them.

[0003] After searching, a Chinese patent with an authorization announcement date of August 12, 2022 and an authorization announcement number of CN217167218U discloses a mechanical gripper for aerial welding of automobiles, including a fixed seat, a clamping jaw assembly and a driving assembly; a fixed seat: its lower end is fixedly connected to the upper surface of the large rotating shaft seat, and the internal rotation connection of the large rotating shaft seat is evenly distributed with long rotating shafts, and a connecting rod is provided at the rear end of the outer arc surface of the long rotating shaft, and a short rotating shaft is provided in the through hole at the lower end of the connecting rod, and the short rotating shafts are respectively rotatably connected to the rotating holes of the small rotating shaft seat. There are four short rotating shafts and two small rotating shaft seats. Gears are provided in the middle of the outer arc surfaces of the two middle long rotating shafts, and the two gears are meshed and connected; clamping jaw assemblies: respectively arranged at the lower ends of the small rotating shaft seats; driving assembly: arranged on the upper surface of the large rotating shaft seat, and the lower end of the driving assembly extends to the interior of the large rotating shaft seat and is fixedly connected to the long rotating shaft on the middle left side. Although the mechanical gripper can grasp and clamp the frame, it does not have the function of automatically aligning the frame and the body before welding, which may cause the frame and the body to be welded without being completely aligned, which is not conducive to improving the quality requirements for body welding.

[0004] To this end, a mechanical gripper for body welding is particularly proposed, which can automatically level the metal plates for body welding, so as to solve the above technical problems. Utility Model Content

[0005] In order to overcome the shortcoming of existing mechanical grippers that they are unable to automatically arrange and align metal sheets for body welding, the technical problem to be solved is to provide a mechanical gripper for body welding that can automatically arrange and align metal sheets for body welding.

[0006] The technical solution is as follows: A mechanical gripper for car body welding, comprising a mounting base, a support, a cylinder, a double-row rack, a rotating shaft, a gear and a clamping arm, wherein the mounting base is provided with a support, the support is provided with a cylinder, the telescopic rod of the cylinder is connected with a double-row rack, two rotatable rotating shafts are symmetrically arranged on the side of the mounting base away from the support, gears are sleeved on the middle parts of the two rotating shafts, and the gears are meshed with the double-row racks, clamping arms are sleeved on the two rotating shafts, and also include anti-slip strips and leveling components, anti-slip strips are arranged on the opposite sides of the two clamping arms, and a leveling component is arranged between the mounting base and the double-row racks, which can automatically push and flatten the side edges of the welded metal sheets so as to accurately weld the leveled and aligned objects.

[0007] As an improvement of the above-mentioned scheme, the leveling assembly includes a connecting arm, a roller, a sorting block and a top block. The double-row rack is connected to a connecting arm, and a roller is rotatably provided on the connecting arm. A sorting block capable of flattening the corners of the metal sheet is provided on the connecting arm near the roller, and a top block capable of flattening and aligning the side edges of the metal sheet is provided at the end of the double-row rack.

[0008] As an improvement of the above solution, the arranging block is arranged in an arc-shaped structure.

[0009] As an improvement of the above solution, the inner top end surface of the arranging block is flush with the outer end surface of the top block.

[0010] As an improvement of the above solution, anti-skid grooves are evenly spaced apart on opposite sides of the two anti-skid strips.

[0011] As an improvement of the above scheme, it also includes a connecting plate and a guide sleeve. The mounting seat is provided with a connecting plate, the end of the connecting plate is provided with a guide sleeve, and the double-row rack is slidably sleeved on the guide sleeve.

[0012] The beneficial effects of the utility model are as follows: before clamping and welding the metal sheets of the vehicle body, the clamping arms and the anti-slip strips are controlled to open to each other, and the sides and corners of the metal sheets can be automatically pushed and leveled respectively through the cooperation of the rollers, the top blocks and the sorting blocks, so that the two metal sheets to be welded can be completely aligned, and the clamping arms and the anti-slip strips are controlled to close to each other, so that the two leveled metal sheets can be clamped, which is beneficial to improving the quality of welding the metal sheets of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a front view of the utility model.

[0015] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model.

[0016] Figure 4 It is the right view of the utility model.

[0017] Figure 5 This is a diagram of the unfolded state of the clamping arm and the anti-slip strip of the utility model.

[0018] Figure numbers: 1_mounting seat, 2_support, 3_cylinder, 4_double-row rack, 5_rotating shaft, 6_gear, 7_clamping arm, 8_anti-slip strip, 9_connecting arm, 10_roller, 11_sorting block, 12_top block, 13_connecting plate, 14_guide sleeve. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Embodiment: The utility model provides a mechanical gripper for body welding, see Figure 1-Figure 5 , including a mounting base 1, a support 2, a cylinder 3, a double-row rack 4, a rotating shaft 5, a gear 6, a clamping arm 7, an anti-slip strip 8 and a leveling component. The mounting base 1 is provided with a support 2, the support 2 is provided with a cylinder 3, the telescopic rod of the cylinder 3 is connected with a double-row rack 4, the middle part of the double-row rack 4 is a hollow structure, and two rotating shafts 5 that can rotate are symmetrically arranged on one side of the mounting base 1 away from the support 2, and the middle parts of the two rotating shafts 5 are sleeved with gears 6, and the gears 6 are connected to the double-row rack 4. The two rotating shafts 5 are meshed, and clamping arms 7 are mounted on each of the two clamping arms 7. Anti-skid strips 8 are arranged on opposite sides of the two clamping arms 7. Anti-skid grooves are evenly spaced apart on opposite sides of the two anti-skid strips 8, which is beneficial to improving the gripping force of the anti-skid strips 8 on the metal sheets of the vehicle body, thereby facilitating the clamping of the metal sheets firmly. A leveling component is arranged between the mounting seat 1 and the double-row racks 4, and the leveling component can automatically push and level the metal sheets of the vehicle body before welding, thereby facilitating the precise welding of the metal sheets.

[0021] For further information, see Figure 1-Figure 5 The leveling assembly includes a connecting arm 9, a roller 10, a sorting block 11 and a top block 12. The double-row rack 4 is connected to the connecting arm 9, and the connecting arm 9 is rotatably provided with a roller 10. A sorting block 11 is provided on the connecting arm 9 near the roller 10. The sorting block 11 is an arc-shaped structure, which is conducive to close fitting with the corners of the metal sheet of the car body. The end of the double-row rack 4 is provided with a top block 12, and the top end surface of the sorting block 11 is flush with the outer end surface of the top block 12, which is conducive to pushing and leveling the side of the metal sheet.

[0022] In addition, see Figure 1-Figure 5, also includes a connecting plate 13 and a guide sleeve 14. The mounting seat 1 is provided with a connecting plate 13, and a guide sleeve 14 is provided at the end of the connecting plate 13. The double-row rack 4 is slidably sleeved on the guide sleeve 14, and the guide sleeve 14 can be used to horizontally guide the double-row rack 4 when extending or retracting.

[0023] The mechanical gripper can be installed on a mechanical arm, and then the mechanical arm is used to control the movement of the mechanical gripper. The cylinder 3 is started to extend the telescopic rod on it, and the double-row rack 4 will drive the top block 12 and the connecting arm 9 to extend synchronously. Through the meshing action of the double-row rack 4 and the gear 6, the clamping arm 7 and the anti-slip strip 8 can be driven to unfold accordingly. When the roller 10 contacts the side of the corresponding metal plate, the side of the two metal plates can be flattened, and when the top block 12 contacts the upper side of the two metal plates, the upper sides of the two metal plates can be aligned. , and the edges and corners of the two metal sheets can be leveled through the sorting block 11, which is beneficial to leveling the two originally separated metal sheets, and thus is beneficial to improving the accuracy of metal sheet welding; the cylinder 3 is controlled to shorten the telescopic rod on it, and the double-row rack 4 will retract the components on it, so that the clamping arm 7 and the anti-slip strip 8 are retracted, and the two aligned metal sheets can be clamped firmly. By controlling the mechanical arm, the clamped and leveled metal sheets can be welded, which is beneficial to improving the quality of metal sheet welding.

[0024] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the utility model concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A mechanical gripper for body welding, comprising a mounting base (1), a support (2), a cylinder (3), a double-row rack (4), a rotating shaft (5), a gear (6) and a clamping arm (7), wherein the mounting base (1) is provided with a support (2), the support (2) is provided with a cylinder (3), the telescopic rod of the cylinder (3) is connected with a double-row rack (4), two rotatable rotating shafts (5) are symmetrically provided on one side of the mounting base (1) away from the support (2), the middle parts of the two rotating shafts (5) are both sleeved with gears (6), and the gears (6) are both meshed with the double-row rack (4), and the two rotating shafts (5) are both sleeved with clamping arms (7), wherein the clamping arm (7) is characterized in that: It also includes an anti-slip strip (8) and a leveling component. The two clamping arms (7) are each provided with an anti-slip strip (8) on one side opposite to the other. A leveling component is provided between the mounting seat (1) and the double-row rack (4) and is capable of automatically pushing and leveling the side of the welded metal sheet so as to enable accurate welding of the leveled and aligned objects.

2. A mechanical gripper for body welding according to claim 1, characterized in that: The leveling assembly comprises a connecting arm (9), a roller (10), a tidying block (11) and a top block (12); the double-row rack (4) is connected to the connecting arm (9); the connecting arm (9) is rotatably provided with a roller (10); the connecting arm (9) is provided with a tidying block (11) capable of leveling the corners of the metal sheet near the roller (10); the end of the double-row rack (4) is provided with a top block (12) capable of leveling and aligning the side of the metal sheet.

3. A mechanical gripper for body welding according to claim 2, characterized in that: The arranging block (11) is arranged in an arc-shaped structure.

4. A mechanical gripper for body welding according to claim 2, characterized in that: The inner top end surface of the arranging block (11) and the outer end surface of the top block (12) are flush.

5. The mechanical gripper for body welding according to claim 1 is characterized in that: Anti-slip grooves are evenly spaced apart on opposite sides of the two anti-slip strips (8).

6. The mechanical gripper for body welding according to claim 1 is characterized in that: It also comprises a connecting plate (13) and a guide sleeve (14); the mounting seat (1) is provided with a connecting plate (13); the end of the connecting plate (13) is provided with a guide sleeve (14); and the double-row rack (4) is slidably sleeved on the guide sleeve (14).

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