Car body welding fixing support

Abstract

The utility model discloses an automobile body welding fixing support, and particularly relates to the technical field of automobile welding, and the automobile body welding fixing support comprises a fixing frame, a sliding frame, a supporting frame and a fixing frame, the claw discs are arranged on the two sides of the sliding frame and driven to turn over towards the center of the table top of the fixing frame along the table top of the fixing frame; the plurality of vacuum chucks are arranged on the claw disc and are used for adsorbing a vehicle body; the vacuum suction cup comprises an outer suction cup body and an inner suction cup body, a one-way valve used for blocking the inner suction cup body is arranged at an end opening of the inner suction cup body, and in the blocking state, a gap between the outer suction cup body and the inner suction cup body is an exhaust cavity. According to the vehicle body welding fixing support, the inner suction cup is sealed through the one-way valve, so that the exhaust cavity is formed between the outer suction cup and the inner suction cup, gas is exhausted to conduct blowing dust removal operation on the surface of a vehicle body, the influence factor of dust on the vacuum suction cup is small when the vacuum suction cup is tightly attached to the vehicle body, and adsorption is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding, in particular to a vehicle body welding fixing bracket. Background Art

[0002] In conjunction with publication number CN219426029U, published on July 28, 2023, a positioning bracket for automobile body welding is disclosed, comprising a positioning platform, the upper surface of which is slidably connected to two vertical plates, the upper surfaces of which are fixedly connected to strip plates, the upper surfaces of which are fixedly connected to a plurality of vacuum suction cups, and the opposite sides of the two vertical plates are fixedly connected to vacuum pumps, which are connected to the interior of each vacuum suction cup. In this positioning bracket for automobile body welding, the automobile body is moved above the two strip plates by a lifting device and pressed above the vacuum suction cups. At this time, the vacuum pump is turned on to extract the air in the vacuum suction cups, thereby sucking the automobile body from the bottom.

[0003] However, the car body needs to go through stamping, cutting and other steps before welding. The dust and debris generated during the cutting process will remain on the surface of the car body. When the vacuum suction cup is sucking, the dust will cause the vacuum suction cup and the car body to not be completely closed, resulting in a gap, which will weaken the suction force of the vacuum suction cup. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle body welding fixing bracket to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle body welding fixing bracket, comprising:

[0006] A sliding frame slidably mounted on the fixed frame;

[0007] Claw plates are arranged on both sides of the sliding frame and are driven to flip along the fixed frame table surface to the center of the fixed frame table surface;

[0008] A plurality of vacuum suction cups are provided on the claw plate, which are used to absorb the vehicle body;

[0009] The vacuum suction cup includes an outer suction cup and an inner suction cup, and the inner suction cup port is provided with a one-way valve for sealing the inner suction cup. In the sealed state, the gap between the outer suction cup and the inner suction cup is an exhaust cavity.

[0010] Preferably, it further comprises a rotating rod which keeps synchronous cooperation with the sliding frame, and the rotating rod is fixedly connected to the claw plate.

[0011] Preferably, the rotating rod is provided with a thread groove for forming a threaded fit with the sliding frame.

[0012] Preferably, the fixing frame is provided with a spring for keeping the sliding frame at a predetermined height.

[0013] Preferably, an elastic diaphragm is provided in the outer suction cup, and the elastic diaphragm is pressurized to switch between two states, a concave state and a convex state, and the one-way valve is located in the middle of the elastic diaphragm.

[0014] Preferably, the inner suction cup is arranged on the elastic diaphragm.

[0015] Preferably, the cross-section of the inner suction cup increases in a step-like manner along the exhaust direction.

[0016] In the above technical solution, the utility model provides a vehicle body welding fixing bracket, which has the following beneficial effects: the inner suction cup is closed by a one-way valve, so that an exhaust cavity is formed between the outer suction cup and the inner suction cup, for gas to be discharged to blow and remove dust from the surface of the vehicle body, so that the vacuum suction cup is less affected by dust when it is close to the vehicle body, and the adsorption is more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram of the structure of the rotating rod and the claw plate provided in an embodiment of the utility model;

[0020] Figure 3 A cross-sectional schematic diagram of the vacuum suction cup provided in an embodiment of the present invention in an exhaust state;

[0021] Figure 4 This is a cross-sectional schematic diagram of the vacuum suction cup in the suction state provided by an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Fixed frame; 2. Sliding frame; 3. Rotating rod; 31. Threaded groove; 4. Cantilever; 5. Claw plate; 6. Vacuum suction cup; 61. Outer suction cup; 62. Elastic diaphragm; 63. One-way valve; 64. Anti-reverse belt; 65. Inner suction cup; 7. Vacuum pump; 8. Spring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, a vehicle body welding fixing bracket includes a fixing bracket 1:

[0026] A sliding frame 2 slidably assembled on the fixed frame 1;

[0027] The claw plates 5 are arranged on both sides of the sliding frame 2 and driven to flip along the surface of the fixed frame 1 to the center of the surface of the fixed frame 1;

[0028] A plurality of vacuum suction cups 6 are provided on the claw plate 5 for adsorbing the vehicle body;

[0029] The vacuum suction cup 6 includes an outer suction cup 61 and an inner suction cup 65 , and a one-way valve 63 is provided at the port of the inner suction cup 65 for sealing the inner suction cup 65 . In the sealed state, the gap between the outer suction cup 61 and the inner suction cup 65 is an exhaust cavity.

[0030] Specifically, a vacuum pump 7 connected to the vacuum suction cup 6 is provided on the fixing frame 1 .

[0031] Furthermore, the car body is hoisted on the sliding frame 2, and the claw plate 5 can be rotated manually or driven by a motor to flip the claw plate 5 along the center of the table surface of the fixed frame 1. During the flipping process, multiple vacuum suction cups 6 are driven close to both sides of the car body, and then the vacuum pump 7 is started to exhaust. Since the one-way valve 63 is in a state of blocking the inner suction cup 65, the gas is discharged from the exhaust chamber to blow and clean the dust on the outer wall of the car body, and then the vacuum pump 7 is made to inhale, the one-way valve 63 is opened, and the gas is sucked from the inner suction cup 65 and the outer suction cup 61 into the vacuum pump 7, causing the outer suction cup 61 to deform and the gap between it and the inner suction cup 65 to shrink. The inner suction cup 65 is sucked into a negative pressure state and adsorbed on the outer wall of the car body, so that the car body is fixed.

[0032] In the above technology, the inner suction cup 65 is closed by the one-way valve 63, so that an exhaust cavity is formed between the outer suction cup 61 and the inner suction cup 65, for gas to be discharged to blow and remove dust from the surface of the vehicle body, so that the vacuum suction cup 6 is less affected by dust when it is close to the vehicle body and the adsorption is more firm.

[0033] As an embodiment further provided by the present invention, it further includes a rotating rod 3 that keeps synchronous cooperation with the sliding frame 2, and the rotating rod 3 is fixedly connected to the claw plate 5.

[0034] Specifically, a thread groove 31 is provided on the rotating rod 3 to form a threaded fit with the sliding frame 2. When the vehicle body is hoisted on the sliding frame 2, the sliding frame 2 moves downward due to the weight of the vehicle body, thereby driving the thread groove 31 to rotate, so that the rotating rod 3 drives the claw plate 5 to flip.

[0035] As another embodiment further provided by the present invention, the fixed frame 1 is provided with a spring 8 for keeping the sliding frame 2 at a predetermined height.

[0036] Specifically, when the car body is hoisted on the sliding frame 2, the sliding frame 2 is driven to move downward due to the weight of the car body, the spring 8 contracts and starts to store energy, and under the elastic support of the spring 8, it can buffer the downward movement of the sliding frame 2, thereby protecting the car body. When the welding is completed, the vacuum suction cup 6 is exhausted by the vacuum pump 7, so that the gas enters the vacuum suction cup 6 through the exhaust chamber, so that the air pressure in the exhaust chamber is balanced with the outside world and no longer close to the car body, so that the car body is hoisted from the sliding frame 2 again, the elastic force of the spring 8 is released and drives the sliding frame 2 to return to the predetermined height. At the same time, the rotating rod 3 is driven to rotate again through the threaded cooperation, driving the claw plate 5 away from the car body.

[0037] As another embodiment further provided by the present invention, an elastic diaphragm 62 is provided in the outer suction cup 61 , and the elastic diaphragm 62 is pressurized to switch between the concave state and the convex state, and the one-way valve 63 is located in the middle of the elastic diaphragm 62 .

[0038] Specifically, an anti-reverse belt 64 is provided in the inner suction cup 65 to prevent the one-way valve 63 from opening into the inner suction cup 65. When the vacuum pump 7 starts to exhaust, the air pressure pushes the elastic diaphragm 62 into a bulging state. At this time, the one-way valve 63 in the elastic diaphragm 62 is located in the middle of the bulging state and is blocked by the anti-reverse belt 64, so that the one-way valves 63 squeeze and support each other, so that multiple one-way valves 63 form a closed spherical surface, such as Figure 3 In the state shown, the port of the inner suction cup 65 is closed by the one-way valve 63, and the exhausted gas can only be discharged outward from between the outer suction cup 61 and the inner suction cup 65. When the vacuum pump 7 starts to suck air, the direction of the air pressure on the elastic diaphragm 62 changes, making the elastic diaphragm 62 in a concave state, as shown in FIG. Figure 4 In the state shown, the one-way valve 63 is not blocked by the anti-reverse belt 64, so that the one-way valve 63 opens between the inner suction cup 65 and the outer suction cup 61, and the air in the inner suction cup 65 and the outer suction cup 61 is sucked into the vacuum pump 7.

[0039] As another embodiment further provided by the present invention, the cross section of the inner suction cup 65 increases in a step-like manner along the exhaust direction.

[0040] Specifically, since the inner suction cup 65 is provided on the elastic diaphragm 62, when the elastic diaphragm 62 is in an expanded state, the inner suction cup 65 on the elastic diaphragm 62 is supported by the normal force of the spherical surface where the elastic diaphragm 62 is located, as shown in FIG. Figure 3 The cone structure shown in FIG. 1 is a cone structure, and since the cross section increases along the exhaust direction, the inner diameter of the exhaust cavity decreases when passing through the step, so that the cross-sectional area of ​​the cavity decreases when the gas passes through, and the gas velocity is increased, which is conducive to blowing away the dust. When the elastic diaphragm 62 is in the concave state, the elastic diaphragm 62 exerts a force on the inner suction cup 65 in the direction of the axis of the inner suction cup 65, so that the inner suction cup 65 is folded as shown in FIG. Figure 4In the frustum structure shown, the stepped portion on the cross section is bent, and after the bending, the inner wall of the inner suction cup 65 near one end of the vehicle body is more easily fitted to the vehicle body.

[0041] Working principle: When the car body is hoisted on the sliding frame 2, the sliding frame 2 moves downward due to the weight of the car body, thereby driving the threaded groove 31 to rotate, so that the rotating rod 3 drives the claw plate 5 to flip, so that the claw plate 5 flips along the center of the table surface of the fixed frame 1. During the flipping process, multiple vacuum suction cups 6 are driven close to both sides of the car body, and then the vacuum pump 7 is started to exhaust. When the elastic diaphragm 62 is in a bulging state, the inner suction cup 65 on the elastic diaphragm 62 is supported by the normal force of the spherical surface where the elastic diaphragm 62 is located. The one-way valve 63 in the elastic diaphragm 62 is located in the middle of the bulge and is blocked by the anti-reverse belt 64, so that the one-way valves 63 squeeze and support each other, so that multiple one-way valves 63 form a closed spherical surface, such as Figure 3 As shown in the state, and because the cross section increases along the exhaust direction, the inner diameter of the exhaust cavity decreases when passing through the step, so that the cross-sectional area of ​​the cavity decreases when the gas passes through, increasing the gas velocity, which is conducive to blowing away dust, and then the vacuum pump 7 inhales air. When the elastic diaphragm 62 is in a concave state, the air pressure direction on the elastic diaphragm 62 changes, so that the elastic diaphragm 62 is in a concave state. At this time, the one-way valve 63 is not blocked by the anti-reverse belt 64, so that the one-way valve 63 opens between the inner suction cup 65 and the outer suction cup 61, and the air in the inner suction cup 65 and the outer suction cup 61 is sucked into the vacuum pump 7. The force exerted by the elastic diaphragm 62 on the inner suction cup 65 is directed in the axial direction of the inner suction cup 65, so that the inner suction cup 65 is folded as shown. Figure 4 The frustum structure shown in the figure has a stepped portion on the cross section that is bent. After bending, the inner wall of the inner suction cup 65 near one end of the vehicle body is more easily fitted with the vehicle body. The inner suction cup 65 is sucked into a negative pressure state and adsorbed on the outer wall of the vehicle body, thereby fixing the vehicle body.

[0042] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vehicle body welding fixing bracket, characterized in that: Includes mounting bracket (1): A sliding frame (2) slidably assembled on the fixed frame (1); Claw plates (5) are arranged on both sides of the sliding frame (2) and are driven to flip along the table surface of the fixed frame (1) toward the center of the table surface of the fixed frame (1); A plurality of vacuum suction cups (6) provided on the claw plate (5) for adsorbing the vehicle body; The vacuum suction cup (6) comprises an outer suction cup (61) and an inner suction cup (65), and a one-way valve (63) for sealing the inner suction cup (65) is provided at the port of the inner suction cup (65); in the sealed state, the gap between the outer suction cup (61) and the inner suction cup (65) serves as an exhaust cavity.

2. The vehicle body welding fixing bracket according to claim 1, characterized in that: It also includes a rotating rod (3) that keeps synchronous cooperation with the sliding frame (2), and the rotating rod (3) is fixedly connected to the claw plate (5).

3. The vehicle body welding fixing bracket according to claim 2, characterized in that: The rotating rod (3) is provided with a thread groove (31) for forming a threaded fit with the sliding frame (2).

4. The vehicle body welding fixing bracket according to claim 3, characterized in that: The fixed frame (1) is provided with a spring (8) for maintaining the sliding frame (2) at a predetermined height.

5. The vehicle body welding fixing bracket according to claim 1, characterized in that: An elastic diaphragm (62) is provided inside the outer suction cup (61), and the elastic diaphragm (62) is pressurized to switch between two states, a concave state and a convex state, and the one-way valve (63) is located in the middle of the elastic diaphragm (62).

6. The vehicle body welding fixing bracket according to claim 5, characterized in that: The inner suction cup (65) is arranged on the elastic diaphragm (62).

7. The vehicle body welding fixing bracket according to claim 1, characterized in that: The cross section of the inner suction cup (65) increases in a step-like manner along the exhaust direction.

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