Exchange mechanism for automobile body-in-white welding clamp

Abstract

The utility model relates to the technical field of automobile welding, and discloses an exchange mechanism for an automobile body-in-white welding clamp, which comprises a rotating support, a rotating cross beam, mounting cross beams and a motor, wherein the rotating support is provided with a stand column, the rotating cross beam is rotationally connected with the stand column, and the mounting cross beams are connected to two sides of the rotating cross beam; the first clamping mechanism comprises two clamping arms which are connected to the mounting cross beam and can be clamped and opened up and down, and opposite air cylinders are arranged on the opposite inner surfaces of the two clamping arms; the second clamping mechanism comprises a rotating arm which is connected to the mounting cross beam on the other side and can swing up and down, a cylinder is arranged on the lower surface of the rotating arm, and a sucker is arranged at the end of a piston rod of the cylinder. Clamping mechanisms are arranged on the two sides of the rotating cross beam, a motor can drive the rotating cross beam to rotate, and workpieces clamped on the two sides of the rotating cross beam can be rotated; the clamping mechanisms on the two sides of the rotating cross beam are in a clamping mode and an adsorption mode respectively, and workpieces of different materials and structures can be clamped and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding, and more specifically to an exchange mechanism for automobile body-in-white welding fixtures. Background Art

[0002] Automobile welding is one of the four major processes in automobile production. When the automobile body is welded, a welding fixture is needed to clamp it.

[0003] After the existing automobile body welding fixture clamps the workpiece, if the workpiece needs to be turned over for processing, the workpiece can only be turned over manually and then clamped again, which is inefficient; and the existing fixture can only fix the workpiece by clamping. If the workpiece can only be contacted on one side, it is difficult to fix it, and the applicability is poor. Utility Model Content

[0004] The utility model aims to provide an exchange mechanism for automobile body-in-white welding fixtures to solve the problems in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0006] An exchange mechanism for a welding fixture of an automobile body in white, comprising:

[0007] The rotating bracket 100 includes a column 110, a rotating beam 120, two mounting beams 130, and a motor 140. The rotating beam 120 is horizontally arranged, and its end is rotatably connected to the column 110. The two mounting beams 130 are connected in parallel to both sides of the rotating beam 120. The motor 140 is arranged on the column 110 and can drive the rotating beam 120 to rotate.

[0008] The first clamping mechanism 200 includes an upper clamping arm 210 and a lower clamping arm 220 which are mounted on one side of the mounting crossbeam 130 and can be controlled to open and clamp upward and downward, and a first clamping head 230. The first clamping head 230 includes two first clamping cylinders 231, and the two first clamping cylinders 231 are oppositely arranged at the ends of the upper clamping arm 210 and the lower clamping arm 220;

[0009] The second clamping mechanism 300 includes a swivel arm 310 and a second clamping head 320. One end of the swivel arm 310 is hingedly connected to the mounting beam 130 on the other side and can be controlled to swing up and down. The second clamping head 320 includes a second clamping cylinder 321 arranged on the lower surface of the end of the swivel arm 310. A suction cup 322 is arranged at the end of the piston rod of the second clamping cylinder 321.

[0010] Furthermore, the mounting beam 130 is connected to the rotating beam 120 via a sliding assembly 150, and the sliding assembly 150 includes two sliding arms 151 vertically connected to the rotating beam 120 in a horizontal plane, and a sliding hydraulic cylinder 152 installed on the rotating beam 120 and arranged parallel to the sliding arms 151. The mounting beam 130 is slidably connected between the two sliding arms 151 and connected to the piston rod of the sliding hydraulic cylinder 152.

[0011] Furthermore, a rubber block 232 is provided at the end of the piston rod of the first clamping cylinder 231 .

[0012] Furthermore, one end of the upper clamp arm 210 and the lower clamp arm 220 are respectively hingedly connected to the upper and lower surfaces of the mounting beam 130, and the upper clamp arm 210 and the lower clamp arm 220 are controlled to open and clamp up and down through a first swivel arm assembly 240. The first swivel arm assembly 240 includes a first hinge rod 241, a first connecting rod 242 and a first hydraulic cylinder 243. The cylinder body of the first hydraulic cylinder 243 is vertically installed on the mounting beam 130 in a horizontal plane. The first connecting rod 242 is arranged parallel to the mounting beam 130 and is connected to the piston rod of the first hydraulic cylinder 243. The upper clamp arm 210 and the lower clamp arm 220 are respectively hingedly connected to the first connecting rod 242 through a first hinge rod 241.

[0013] Furthermore, the swing arm 310 is controlled to swing up and down through the second swing arm assembly 330, and the second swing arm assembly 330 includes a second hinge rod 331, a second connecting rod 332 and a second hydraulic cylinder 333. The cylinder body of the second hydraulic cylinder 333 is vertically installed on the mounting beam 130 in a horizontal plane, and the second connecting rod 332 is arranged parallel to the mounting beam 130 and is connected to the piston rod of the second hydraulic cylinder 333. One end of the second hinge rod 331 is hingedly connected to the inner surface of the swing arm 310, and the other end is hingedly connected to the second connecting rod 332.

[0014] Furthermore, the first clamping mechanisms 200 include multiple groups, which are spaced apart along the length direction of the mounting beam 130 .

[0015] Furthermore, the second clamping mechanisms 300 include multiple groups, which are spaced apart along the length direction of the mounting beam 130 .

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides an exchange mechanism for automobile body-in-white welding fixtures, wherein clamping mechanisms are arranged on both sides of a rotating crossbeam, and the rotating crossbeam is driven to rotate by a motor, so that the workpieces clamped on both sides of the rotating crossbeam can be rotated; at the same time, the clamping mechanisms on both sides of the rotating crossbeam respectively adopt clamping and adsorption forms, so that workpieces of different materials and structures can be clamped and fixed.

[0018] The utility model provides an exchange mechanism for a white body welding fixture for an automobile. The first clamping mechanism and the second clamping mechanism can perform clamping operations separately or simultaneously on both sides. By driving a rotating crossbeam to rotate by a motor, the workpieces clamped by the first clamping mechanism and the second clamping mechanism on both sides of the rotating crossbeam can be exchanged for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of an exchange mechanism for a welding fixture for an automobile body-in-white in one embodiment;

[0021] Figure 2 A top view of an exchange mechanism for an automobile body-in-white welding fixture in one embodiment;

[0022] Figure 3 A side view of an exchange mechanism for an automobile body-in-white welding fixture in one embodiment;

[0023] 100. rotating bracket, 110. column, 120. rotating beam, 130. mounting beam, 140. motor, 150. sliding assembly, 151. sliding arm, 152. sliding hydraulic cylinder;

[0024] 200. first clamping mechanism, 210. upper clamping arm, 220. lower clamping arm, 230. first clamping head, 231. first clamping cylinder, 232. rubber block, 240. first rotating arm assembly, 241. first hinge rod, 242. first connecting rod, 243. first hydraulic cylinder;

[0025] 300. Second clamping mechanism, 310. Rotating arm, 320. Second clamping head, 321. Second clamping cylinder, 322. Suction cup, 330. Second rotating arm assembly, 331. Second hinge rod, 332. Second connecting rod, 333. Second hydraulic cylinder. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3 This embodiment provides an exchange mechanism for a car body-in-white welding fixture, including: a rotating bracket 100, a first clamping mechanism 200 and a second clamping mechanism 300.

[0028] The rotating bracket 100 includes a column 110, a rotating beam 120, a mounting beam 130, a motor 140 and a sliding assembly 150; the columns 110 are provided with two columns 110 and are arranged opposite to each other; the rotating beam 120 is arranged horizontally, and its two ends are rotatably connected between the two columns 110; the mounting beam 130 is provided with two columns, and the two mounting beams 130 are arranged parallel to the rotating beam 120 and are connected to both sides of the rotating beam 120 through the sliding assembly 150; the sliding assembly 150 includes two sliding arms 151 vertically connected to the rotating beam 120 in a horizontal plane, and a sliding hydraulic cylinder 152 installed on the rotating beam 120 and arranged parallel to the sliding arms 151, and the two ends of the mounting beam 130 are slidably connected between the two sliding arms 151 and connected to the piston rod of the sliding hydraulic cylinder 152; the motor 140 is arranged on one of the columns 110 and can drive the rotating beam 120 to rotate.

[0029] The first clamping mechanism 200 includes an upper clamping arm 210, a lower clamping arm 220 and a first clamping head 230. The upper clamping arm 210 and the lower clamping arm 220 are installed on one side of the mounting beam 130 and can be controlled to open and clamp up and down; the first clamping head 230 includes two first clamping cylinders 231, and the two first clamping cylinders 231 are relatively arranged on the lower surface of the end of the upper clamping arm 210 and the upper surface of the end of the lower clamping arm 220. The piston rods of the two first clamping cylinders 231 extend and retract in opposite directions. When the piston rods of the two first clamping cylinders 231 are extended at the same time, the ends of the piston rods of the two first clamping cylinders 231 can clamp the workpiece.

[0030] In this embodiment, a rubber block 232 is provided at the end of the piston rod of the first clamping cylinder 231. The elastic deformation of the rubber block 232 can ensure the stability of the two first clamping cylinders 231 clamping the workpiece and avoid scratching the surface of the workpiece.

[0031] In this embodiment, one end of the upper clamp arm 210 and the lower clamp arm 220 are respectively hingedly connected to the upper and lower surfaces of the mounting beam 130 on one side, and the upper clamp arm 210 and the lower clamp arm 220 are controlled to open and clamp up and down by the first rotating arm assembly 240. The first rotating arm assembly 240 includes a first hinge rod 241, a first connecting rod 242 and a first hydraulic cylinder 243. The cylinder body of the first hydraulic cylinder 243 is vertically installed on the mounting beam 130 in a horizontal plane. The first connecting rod 242 is arranged parallel to the mounting beam 130 and is connected to the piston rod of the first hydraulic cylinder 243. The upper clamp arm 210 and the lower clamp arm 220 are respectively hingedly connected to the first connecting rod 242 through a first hinge rod 241.

[0032] In this embodiment, the first clamping mechanism 200 has multiple groups, which are spaced apart along the length direction of the mounting beam 130. The upper clamping arm 210 and the lower clamping arm 220 of each group of the first clamping mechanism 200 are respectively connected to the same first connecting rod 242 through the first hinge rod 241. The extension and retraction of the piston rod of the first hydraulic cylinder 243 can push the first connecting rod 242 to move forward and backward, thereby driving the multiple groups of upper clamping arms 210 and lower clamping arms 220 to open and clamp at the same time.

[0033] The second clamping mechanism 300 includes a rotating arm 310 and a second clamping head 320. One end of the rotating arm 310 is hingedly connected to the mounting beam 130 on the other side and can be controlled to swing up and down. The second clamping head 320 includes a second clamping cylinder 321 arranged on the lower surface of the end of the rotating arm 310. A suction cup 322 is arranged at the end of the piston rod of the second clamping cylinder 321.

[0034] In this embodiment, the swing arm 310 is controlled to swing up and down through the second swing arm assembly 330. The second swing arm assembly 330 includes a second hinge rod 331, a second connecting rod 332 and a second hydraulic cylinder 333. The cylinder body of the second hydraulic cylinder 333 is vertically installed on the mounting beam 130 in a horizontal plane. The second connecting rod 332 is arranged parallel to the mounting beam 130 and is connected to the piston rod of the second hydraulic cylinder 333. One end of the second hinge rod 331 is hingedly connected to the inner surface of the swing arm 310, and the other end is hingedly connected to the second connecting rod 332.

[0035] The second clamping mechanism 300 has multiple groups, which are spaced apart along the length direction of the mounting beam 130. The rotating arms 310 of the multiple groups of the second clamping mechanisms 300 are respectively connected to the same second connecting rod 332 through the second hinge rod 331. The extension and retraction of the piston rod of the second hydraulic cylinder 333 can push the second connecting rod 332 to move forward and backward, thereby driving the multiple groups of the rotating arms 310 to swing up and down synchronously.

[0036] The working principle of a switching mechanism for a white body welding fixture for an automobile provided in this embodiment is as follows:

[0037] When in use, the sliding hydraulic cylinder 152 is started, and the piston rod of the sliding hydraulic cylinder 152 pushes the mounting beam 130 to slide along the surface of the sliding arm 151 , thereby adjusting the clamping distance between the first clamping mechanism 200 and the second clamping mechanism 300 .

[0038] Start the first hydraulic cylinder 243, and the piston rod of the first hydraulic cylinder 243 pushes the first connecting rod 242 to move forward and backward, thereby pushing the upper clamping arm 210 and the lower clamping arm 220 to rotate and open through the first hinge rod 241; then start the first clamping cylinder 231, and the piston rods of the two first clamping cylinders 231 drive the two rubber blocks 232 to extend toward each other, slowly clamping the workpiece to ensure the accuracy of clamping.

[0039] The second hydraulic cylinder 333 is started, and the piston rod of the second hydraulic cylinder 333 pushes the second connecting rod 332 to move forward and backward, thereby pushing the rotating arm 310 to swing upward through the second hinge rod 331, and then the second clamping cylinder 221 is started, and the piston rod of the second clamping cylinder 221 pushes the suction cup 222 onto the workpiece for adsorption and fixation.

[0040] During operation, the first clamping mechanism 200 and the second clamping mechanism 300 can perform clamping operations separately or simultaneously on both sides. By driving the rotating beam 120 to rotate through the motor 140, the workpieces clamped by the first clamping mechanism 200 and the second clamping mechanism 300 on both sides of the rotating beam 120 can be exchanged for operation.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exchange mechanism for automobile body-in-white welding fixtures, characterized in that: include: A rotating bracket (100) comprises a column (110), a rotating beam (120), two mounting beams (130), and a motor (140); the rotating beam (120) is arranged horizontally, and its end is rotatably connected to the column (110); the two mounting beams (130) are connected in parallel to both sides of the rotating beam (120); and the motor (140) is arranged on the column (110) and can drive the rotating beam (120) to rotate; The first clamping mechanism (200) comprises an upper clamping arm (210) and a lower clamping arm (220) which are mounted on one side of the mounting crossbeam (130) and can be controlled to open and clamp upward and downward, and a first clamping head (230), wherein the first clamping head (230) comprises two first clamping cylinders (231), and the two first clamping cylinders (231) are arranged oppositely at the ends of the upper clamping arm (210) and the lower clamping arm (220); The second clamping mechanism (300) comprises a rotating arm (310) and a second clamping head (320), wherein one end of the rotating arm (310) is hingedly connected to the mounting crossbeam (130) on the other side and can be controlled to swing up and down, and the second clamping head (320) comprises a second clamping cylinder (321) arranged on the lower surface of the end of the rotating arm (310), and a suction cup (322) is arranged at the end of the piston rod of the second clamping cylinder (321).

2. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: The mounting crossbeam (130) is connected to the rotating crossbeam (120) via a sliding assembly (150). The sliding assembly (150) comprises two sliding arms (151) vertically connected to the rotating crossbeam (120) in a horizontal plane, and a sliding hydraulic cylinder (152) mounted on the rotating crossbeam (120) and arranged parallel to the sliding arms (151). The mounting crossbeam (130) is slidably connected between the two sliding arms (151) and connected to a piston rod of the sliding hydraulic cylinder (152).

3. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: A rubber block (232) is provided at the end of the piston rod of the first clamping cylinder (231).

4. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: One end of the upper clamp arm (210) and the lower clamp arm (220) are respectively hingedly connected to the upper and lower surfaces of the mounting beam (130); the upper clamp arm (210) and the lower clamp arm (220) are controlled to open and clamp up and down by a first rotating arm assembly (240); the first rotating arm assembly (240) comprises a first hinge rod (241), a first connecting rod (242) and a first hydraulic cylinder (243); the cylinder body of the first hydraulic cylinder (243) is vertically mounted on the mounting beam (130) in a horizontal plane; the first connecting rod (242) is arranged parallel to the mounting beam (130) and is connected to the piston rod of the first hydraulic cylinder (243); the upper clamp arm (210) and the lower clamp arm (220) are respectively hingedly connected to the first connecting rod (242) via a first hinge rod (241).

5. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: The swing arm (310) is controlled to swing up and down by a second swing arm assembly (330). The second swing arm assembly (330) includes a second hinge rod (331), a second connecting rod (332) and a second hydraulic cylinder (333). The cylinder body of the second hydraulic cylinder (333) is vertically installed on the mounting crossbeam (130) in a horizontal plane. The second connecting rod (332) is arranged parallel to the mounting crossbeam (130) and is connected to the piston rod of the second hydraulic cylinder (333). One end of the second hinge rod (331) is hingedly connected to the inner surface of the swing arm (310), and the other end is hingedly connected to the second connecting rod (332).

6. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: The first clamping mechanisms (200) have a plurality of groups, which are spaced apart and distributed along the length direction of the mounting beam (130).

7. The exchange mechanism for automobile body-in-white welding fixture according to claim 1, characterized in that: The second clamping mechanism (300) has a plurality of groups, which are distributed at intervals along the length direction of the mounting beam (130).

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