Clamp for welding automobile battery frame anti-collision beam assembly

Abstract

The utility model discloses a clamp for welding an anti-collision beam assembly of an automobile battery frame. The clamp comprises a bottom plate, five datum planes are arranged in the middle of the bottom plate and sequentially comprise the first cross beam left datum plane, the second cross beam left datum plane, the middle cross beam datum plane, the second cross beam right datum plane and the first cross beam right datum plane from left to right. An auxiliary positioning pin is arranged between the first cross beam left datum plane and the second cross beam left datum plane. A main positioning pin is arranged between the second right cross beam reference surface and the first right cross beam reference surface; four powerful pressing cylinders, an auxiliary positioning pin pressing cylinder and a main positioning pin pressing cylinder are arranged at the rear part of the bottom plate; the left portion and the right portion of the bottom plate are each provided with a reinforcing plate moving and positioning assembly. According to the clamp for welding the automobile battery frame anti-collision beam assembly, welding deformation can be prevented, reverse pre-bending welding can be achieved, qualified products can be welded at a time, the sizing procedure is reduced, and therefore production efficiency is improved, and enterprise cost is reduced.

Description

Technical Field

[0001] This utility model relates to a fixture for welding automotive battery frame anti-collision beam assemblies. Background Technology

[0002] See also Figure 1 The battery frame anti-collision beam assembly includes a battery frame anti-collision beam crossbeam 25 and two seat brackets 26 mounted thereon. Both ends of the battery frame anti-collision beam crossbeam 25 are provided with a first reinforcing plate 27 and a second reinforcing plate 28.

[0003] Currently, the automotive battery frame anti-collision beam assembly is welded using ordinary pneumatic clamps. After welding, inspection revealed that the crossbeam 25 bent downwards by 3mm in the middle due to welding deformation, far exceeding the 1mm standard requirement in the drawing. After welding, a hydraulic press is used to reshape it to the dimensions required by the drawing, adding a reshaping process compared to the usual welding assembly. Due to the high demand and production volume of this product, it is difficult to guarantee production volume by mechanically reshaping the dimensions to meet the drawing requirements. Therefore, the key issue for enterprises is to determine the appropriate means to control welding deformation and thus control the welding dimensions of the battery frame anti-collision beam.

[0004] Currently, the most commonly used welding fixtures are automatic pneumatic fixtures made with ordinary cylinders. These fixtures are inexpensive and suitable for products with relatively uniform welds and easily controllable dimensions, making them widely used. However, these fixtures are not suitable for products made of high-strength steel with welding deformation greater than 3mm. For example, the crossbeam of a battery frame collision beam is made of HC1200 / 1500MS high-strength steel with 20 welds, which are only distributed on the upper end face of the beam. The welds are relatively dense on the upper end face. When using ordinary pneumatic fixtures for assembly, the crossbeam cannot be pre-bent in the opposite direction before welding. As a result, after welding, the middle of the crossbeam bends downward by 3mm. A hydraulic press is needed to straighten the crossbeam to the dimensions required by the drawing. This process is time-consuming, complex, inefficient, and difficult to meet the requirements of mass production. In addition, it adds an extra process and requires an employee and a straightening machine, which undoubtedly increases the company's costs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fixture for welding automotive battery frame anti-collision beam assemblies. This fixture can prevent welding deformation and achieve reverse pre-bending welding. It can not only weld qualified products in one go, but also reduce the straightening process, thereby improving production efficiency and reducing enterprise costs.

[0006] The technical solution to achieve the above objective is: a fixture for welding automotive battery frame anti-collision beam assemblies, including a base plate;

[0007] The base plate has five reference surfaces in the middle. From left to right, the five reference surfaces are the first reference surface on the left of the crossbeam, the second reference surface on the left of the crossbeam, the middle reference surface on the crossbeam, the second reference surface on the right of the crossbeam, and the first reference surface on the right of the crossbeam. The middle reference surface on the crossbeam is higher than the remaining reference surfaces.

[0008] A secondary positioning pin is provided between the first left reference plane and the second left reference plane of the crossbeam;

[0009] A seat bracket fixing mechanism is provided between the second left reference plane of the crossbeam and the middle reference plane of the crossbeam, and between the middle reference plane of the crossbeam and the second right reference plane of the crossbeam;

[0010] A main positioning pin is provided between the second right reference plane and the first right reference plane of the crossbeam;

[0011] The rear of the base plate is equipped with four high-pressure clamping cylinders, one secondary positioning pin clamping cylinder, and one primary positioning pin clamping cylinder. The clamping heads of the four high-pressure clamping cylinders are located directly above the left first reference plane, the left second reference plane, the right second reference plane, and the right first reference plane of the crossbeam, respectively. The clamping head of the secondary positioning pin clamping cylinder is located directly above the secondary positioning pin. The clamping head of the primary positioning pin clamping cylinder is located directly above the primary positioning pin.

[0012] The base plate is equipped with a set of reinforcing plate moving and positioning components on its left and right sides. Each set of reinforcing plate moving and positioning components includes a lifting mechanism, a push-pull cylinder, a first reinforcing plate positioning reference mechanism, a second reinforcing plate positioning reference mechanism, and two slide rails. The two slide rails are arranged parallel to each other on the base plate, one in front of the other. The lifting mechanism is slidably mounted across the two slide rails. The push-pull cylinder is connected to the lifting mechanism and drives the lifting mechanism to slide left and right along the two slide rails. The first and second reinforcing plate positioning reference mechanisms are arranged one in front of the other on the lifting mechanism, and the lifting mechanism drives the first and second reinforcing plate positioning reference mechanisms to perform lifting and lowering movements.

[0013] The front side of the base plate is provided with a clamping button and a solenoid valve assembly. The clamping button controls the action of each cylinder through the solenoid valve assembly.

[0014] The aforementioned fixture for welding automotive battery frame anti-collision beam assemblies, wherein the middle reference plane of the crossbeam is 4mm higher than the remaining reference planes.

[0015] The above-mentioned fixture for welding automotive battery frame anti-collision beam assembly includes a first positioning reference mechanism for the reinforcing plate, comprising a first reference block for the reinforcing plate and a positioning pin disposed thereon; and a second positioning reference mechanism for the reinforcing plate, comprising a second reference block for the reinforcing plate and a positioning pin disposed thereon.

[0016] The aforementioned fixture for welding automotive battery frame anti-collision beam assemblies includes a battery frame anti-collision beam crossbeam and two seat brackets mounted thereon. Each end of the battery frame anti-collision beam crossbeam is provided with a first reinforcing plate and a second reinforcing plate. The battery frame anti-collision beam crossbeam is positioned on the five reference surfaces. The two seat brackets are fixed to the battery frame anti-collision beam crossbeam one-to-one by two seat bracket fixing mechanisms. The first reinforcing plate at each end of the battery frame anti-collision beam crossbeam is respectively positioned on the first reinforcing plate positioning reference mechanism of two sets of reinforcing plate moving positioning assemblies, and the second reinforcing plate at each end of the battery frame anti-collision beam crossbeam is respectively positioned on the second reinforcing plate positioning reference mechanism of two sets of reinforcing plate moving positioning assemblies.

[0017] The aforementioned fixture for welding automotive battery frame anti-collision beam assemblies includes four measuring reference blocks on the base plate.

[0018] This utility model discloses a fixture for welding automotive battery frame anti-collision beam assemblies. It can prevent welding deformation and achieve reverse pre-bending welding. Not only can qualified products be welded in one go, but it also reduces the straightening process, thereby improving production efficiency and reducing enterprise costs. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the automotive battery box anti-collision beam assembly.

[0020] Figure 2 This is a three-dimensional structural diagram of the fixture for welding automotive battery frame anti-collision beam assemblies according to the present invention.

[0021] Figure 3 This is a front view of the fixture for welding automotive battery frame anti-collision beam assemblies according to this utility model;

[0022] Figure 4 This is a side view of the fixture for welding automotive battery frame anti-collision beam assemblies according to the present invention;

[0023] Figure 5 A schematic diagram of using the clamp of this utility model to clamp the anti-collision beam of the battery frame;

[0024] Figure 6 This is a diagram showing the usage status of the main positioning pin and the auxiliary positioning pin of the clamp of this utility model;

[0025] Figure 7 A schematic diagram showing the clamping of a seat bracket using the fixture of this utility model;

[0026] Figure 8 This is a schematic diagram of using the fixture of this utility model to clamp the reinforcing plate. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0028] See also Figures 2 to 8 The preferred embodiment of this utility model is a fixture for welding automotive battery frame anti-collision beam assemblies, including a base plate 1; four measuring reference blocks 2 are provided on the base plate 1, and the measuring reference blocks 2 are references for coordinate system establishment.

[0029] Five reference surfaces are set in the middle of the base plate 1. From left to right, the five reference surfaces are: the first reference surface 8 on the left of the crossbeam, the second reference surface 9 on the left of the crossbeam, the middle reference surface 5 on the crossbeam, the second reference surface 7 on the right of the crossbeam, and the first reference surface 6 on the right of the crossbeam. The middle reference surface 5 of the crossbeam is 4mm higher than the remaining reference surfaces, which can realize the pre-bending treatment of the crossbeam before welding.

[0030] A secondary positioning pin 14 is provided between the first left reference surface 8 and the second left reference surface 9 of the crossbeam. The secondary positioning pin 14 is used for positioning the secondary positioning hole of the product.

[0031] A seat bracket fixing mechanism 18 is provided between the second reference plane 9 on the left and the middle reference plane 5 on the crossbeam, and a seat bracket fixing mechanism 19 is provided between the middle reference plane 5 on the crossbeam and the second reference plane 7 on the right. The seat bracket fixing mechanism 18 and the seat bracket fixing mechanism 19 are used to fix the two seat brackets 26 to the crossbeam 25 of the battery frame anti-collision beam.

[0032] A main locating pin 15 is provided between the second right reference surface 7 and the first right reference surface 6 of the crossbeam. The main locating pin 15 is used for positioning the main locating hole of the product.

[0033] The rear of the base plate 1 is equipped with four high-pressure clamping cylinders, one secondary positioning pin clamping cylinder 16, and one main positioning pin clamping cylinder 17. The clamping heads of the high-pressure clamping cylinders 11, 12, 13, and 10 are located directly above the left first reference plane 8, the left second reference plane 9, the right second reference plane 7, and the right first reference plane 6 of the crossbeam. Each high-pressure clamping cylinder is an 80-type high-pressure cylinder, used for pre-bending and clamping the crossbeam before welding.

[0034] The clamping head of the secondary positioning pin clamping cylinder 16 is located directly above the secondary positioning pin 14; the secondary positioning pin clamping cylinder 16 is used to clamp the secondary positioning pin 14.

[0035] The clamping head of the main locating pin clamping cylinder 17 is located directly above the main locating pin 15. The main locating pin clamping cylinder 17 is used to clamp the main locating pin 15.

[0036] The left and right sides of the base plate 1 are each equipped with a set of reinforcing plate moving and positioning components. Each set of reinforcing plate moving and positioning components includes a lifting mechanism 21, a push-pull cylinder 22, a first reinforcing plate positioning reference mechanism 23, a second reinforcing plate positioning reference mechanism 24, and two slide rails 20. The two slide rails 20 are arranged parallel to each other on the base plate 1, one in front of the other. The lifting mechanism 21 is slidably mounted across the two slide rails 20. The push-pull cylinder 22 is connected to the lifting mechanism 21 and drives the lifting mechanism 21 to slide left and right along the two slide rails 20. The first reinforcing plate positioning reference mechanism 23 and the second reinforcing plate positioning reference mechanism 24 are arranged one in front of the other on the lifting mechanism 21. The lifting mechanism 21 drives the first reinforcing plate positioning reference mechanism 23 and the second reinforcing plate positioning reference mechanism 24 to perform lifting and lowering movements. The first reinforcing plate positioning reference mechanism 23 includes a first reinforcing plate reference block and a positioning pin set thereon. The second reinforcing plate positioning reference mechanism 24 includes a second reinforcing plate reference block and a positioning pin set thereon.

[0037] The front side of the base plate 1 is provided with a clamping button 3 and a solenoid valve assembly 4. The clamping button 3 controls the action of each cylinder through the solenoid valve assembly 4.

[0038] Please see again Figure 1 The automotive battery frame anti-collision beam assembly includes a battery frame anti-collision beam crossbeam 25 (hereinafter referred to as crossbeam 25) and two seat brackets 26 mounted on it. Both ends of the crossbeam 25 are provided with a first reinforcing plate 27 and a second reinforcing plate 28. The crossbeam 25 is mounted on five reference surfaces. The two seat brackets 26 are fixed to the crossbeam 25 one-to-one by two seat bracket fixing mechanisms. The first reinforcing plate 27 at both ends of the crossbeam 25 is respectively mounted on the first reinforcing plate positioning reference mechanism 23 of the two sets of reinforcing plate moving positioning assemblies, and the second reinforcing plate 28 at both ends of the crossbeam 25 is respectively mounted on the second reinforcing plate positioning reference mechanism 24 of the two sets of reinforcing plate moving positioning assemblies.

[0039] This utility model discloses a fixture for welding automotive battery frame anti-collision beam assemblies. During assembly, the fixture's five reference surfaces and main / secondary locating pins serve as positioning references for the crossbeam. After the crossbeam is placed on the reference surfaces, pressing the clamping button activates each high-pressure clamping cylinder to press the crossbeam firmly onto the reference surfaces. The middle reference surface is 4mm higher than the two end reference surfaces to perform a pre-bending treatment on the crossbeam before welding. Other parts are then installed until all parts are installed and clamped in place. The start button is then pressed to begin welding. After welding, the parts are placed on an inspection fixture for testing. Parts that conform to the fixture are considered qualified; otherwise, they are considered unqualified.

[0040] The specific operating procedure for the fixture used for welding automotive battery frame anti-collision beam assemblies of this utility model is as follows:

[0041] 1) Place the crossbeam 25 on the five reference planes (see...) Figure 5 );

[0042] 2) Place the main locating pin 15 and the auxiliary locating pin 14 into the main and auxiliary locating holes of the crossbeam 25 to position the crossbeam 25 (see...). Figure 6 );

[0043] 3) Press clamping button 3, and the auxiliary positioning pin clamping cylinder 16 and the main positioning pin clamping cylinder 17 will clamp the corresponding positioning pins (see...). Figure 6 Simultaneously, the high-pressure clamping cylinders 11, 12, 13, and 10 respectively clamp the crossbeam 25. At this time, the middle position of the crossbeam is 4mm higher than the two ends, achieving a pre-bending effect before welding. The 4mm difference in height between the middle reference surface and the two end reference surfaces is used to pre-bend the crossbeam before welding, ensuring that the crossbeam dimensions after welding meet the drawing's outline requirement of ±1mm (see...). Figure 5 );

[0044] 4) Place the seat bracket 26 on the crossbeam 25 (see...) Figure 7 );

[0045] 5) Press clamping button 3, the cylinder of the seat bracket fixing mechanism clamps, and fixes the seat bracket to the crossbeam (see...). Figure 7 );

[0046] 6) Install reinforcing plate 1 27 and reinforcing plate 28 onto reinforcing plate 1 positioning reference mechanism 23 and reinforcing plate 2 positioning reference mechanism 24 respectively (see...) Figure 8 );

[0047] 7) Press the clamping button 3, the push-pull cylinder 22 moves, and the lifting mechanism 21 of the two sets of reinforcing plate moving and positioning components slides along the slide rail 20 to the middle position. At the same time, the first reinforcing plate 27 and the second reinforcing plate 28 on the lifting mechanism 21 move to the middle. Press the clamping button 3 again, and the lifting mechanism 21 begins to rise. At the same time, the first reinforcing plate 27 and the second reinforcing plate 28 at both ends attach to the crossbeam 25. The assembly is complete (see...). Figure 8 );

[0048] 8) Press the start button for the welding robot. The welding robot will perform welding. After welding is completed, the fixture will open automatically, and the operator can take out the battery frame anti-collision beam welding assembly.

[0049] In summary, the fixture of this utility model for welding automotive battery frame anti-collision beam assemblies can prevent welding deformation and achieve reverse pre-bending welding. It can not only weld qualified products in one go, but also reduce the straightening process, thereby improving production efficiency and reducing enterprise costs.

[0050] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A fixture for welding automotive battery frame anti-collision beam assemblies, characterized in that, Including the base plate; The base plate has five reference surfaces in the middle. From left to right, the five reference surfaces are the first reference surface on the left of the crossbeam, the second reference surface on the left of the crossbeam, the middle reference surface on the crossbeam, the second reference surface on the right of the crossbeam, and the first reference surface on the right of the crossbeam. The middle reference surface on the crossbeam is higher than the remaining reference surfaces. A secondary positioning pin is provided between the first left reference plane and the second left reference plane of the crossbeam; A seat bracket fixing mechanism is provided between the second left reference plane of the crossbeam and the middle reference plane of the crossbeam, and between the middle reference plane of the crossbeam and the second right reference plane of the crossbeam; A main positioning pin is provided between the second right reference plane and the first right reference plane of the crossbeam; The rear of the base plate is equipped with four powerful clamping cylinders, one auxiliary positioning pin clamping cylinder and one main positioning pin clamping cylinder. The clamping heads of the four powerful clamping cylinders are located directly above the left first reference plane, the left second reference plane, the right second reference plane and the right first reference plane of the crossbeam. The clamping head of the auxiliary positioning pin clamping cylinder is located directly above the auxiliary positioning pin; the clamping head of the main positioning pin clamping cylinder is located directly above the main positioning pin. The base plate is equipped with a set of reinforcing plate moving and positioning components on its left and right sides. Each set of reinforcing plate moving and positioning components includes a lifting mechanism, a push-pull cylinder, a first reinforcing plate positioning reference mechanism, a second reinforcing plate positioning reference mechanism, and two slide rails. The two slide rails are arranged parallel to each other on the base plate, one in front of the other. The lifting mechanism is slidably mounted across the two slide rails. The push-pull cylinder is connected to the lifting mechanism and drives the lifting mechanism to slide left and right along the two slide rails. The first and second reinforcing plate positioning reference mechanisms are arranged one in front of the other on the lifting mechanism, and the lifting mechanism drives the first and second reinforcing plate positioning reference mechanisms to perform lifting and lowering movements. The front side of the base plate is provided with a clamping button and a solenoid valve assembly. The clamping button controls the action of each cylinder through the solenoid valve assembly.

2. The fixture for welding automotive battery frame anti-collision beam assemblies according to claim 1, characterized in that, The middle reference plane of the crossbeam is 4mm higher than the remaining reference planes.

3. A fixture for welding automotive battery frame anti-collision beam assemblies according to claim 1, characterized in that, The first positioning reference mechanism of the reinforcing plate includes a first reference block of the reinforcing plate and a positioning pin disposed thereon; the second positioning reference mechanism of the reinforcing plate includes a second reference block of the reinforcing plate and a positioning pin disposed thereon.

4. A fixture for welding automotive battery frame anti-collision beam assemblies according to claim 1, characterized in that, The automotive battery frame anti-collision beam assembly includes a battery frame anti-collision beam crossbeam and two seat brackets mounted thereon. Each end of the battery frame anti-collision beam crossbeam is provided with a first reinforcing plate and a second reinforcing plate. The battery frame anti-collision beam crossbeam is positioned on the five reference surfaces. The two seat brackets are fixed to the battery frame anti-collision beam crossbeam one-to-one by two seat bracket fixing mechanisms. The first reinforcing plate at each end of the battery frame anti-collision beam crossbeam is respectively positioned on the first reinforcing plate positioning reference mechanism of two sets of reinforcing plate moving positioning assemblies. The second reinforcing plate at each end of the battery frame anti-collision beam crossbeam is respectively positioned on the second reinforcing plate positioning reference mechanism of two sets of reinforcing plate moving positioning assemblies.

5. A fixture for welding automotive battery frame anti-collision beam assemblies according to claim 1, characterized in that, Four measuring reference blocks are set on the base plate.

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