A hexagonal frame auxiliary welding tool

Abstract

The present invention provides a hexagonal frame auxiliary welding tool, a base plane plate and a base square tube bracket, the base square tube bracket is fixedly arranged on the bottom surface of the base plane plate, the base plane plate is connected with the base square tube bracket, the left fixed bracket and the linear guide slider of the right movable bracket, the rear end of the left fixed bracket is provided with a laser distance sensor, an anti-rollover bracket is fixed between the left fixed bracket and the right movable bracket and close to the right movable bracket, and a motor controller is installed on the top surface of the base plane plate, and the motor controller drives the motor to move through the signal of the laser distance sensor to reach the set distance. The present invention can avoid repeated operations of manual measurement and positioning and errors of manual measurement; can ensure the accuracy of the distance between the levels of the hexagonal frame; and avoid the up and down jumping of the V-shaped groove and the swing of the linear movement.

Description

Technical Field

[0001] The invention relates to the technical field of hexagonal frame welding, and in particular to a hexagonal frame auxiliary welding tool. Background Art

[0002] The welding of the hexagonal frame of a special-purpose vehicle requires the use of square tubes and steel plates for assembly and welding, in which the position relationship, angle relationship and relative gap have very high requirements. The frame generally includes the top and two sides of the frame, in which the cutting of the steel plate is processed by laser cutting and bending, and the square tube is made by welding after cutting according to the design size. When welding the frame, it is necessary to control the position and angle of the welded square tube according to the design requirements. Only multiple adjustments and multi-person assistance can achieve a qualified welding effect; however, in the existing production process, the measurement depends on manual work, which increases the labor intensity of the staff, and is prone to welding deformation and large errors in position, angle, and relative gap size, which greatly reduces the uniformity and versatility of the product, and thus cannot guarantee the qualified rate of frame welding. Therefore, how to design a welding tool that can solve the influence of material cutting on welding and ensure the dimensional accuracy of the welding frame, so that the versatility of the welding product is improved, thereby improving the operating efficiency, is a difficult problem that professional technicians and even companies need to solve urgently.

[0003] Therefore, technicians have proposed many solutions to the above problems. Chinese patent document CN201822199605.4 provides "A frame welding tool", including a fixed base plate. The base plate is the fixed base of all adjustment blocks, locating pins and clamps, ensuring that the adjustment blocks, locating pins and clamps are on the same horizontal plane. It is also the main basis for keeping the frame welding on the same plane. The verticality of the square tube in two directions is ensured by a number of locating pins, clamps and adjustment blocks. The same is true for the other three square tubes. The two mutually perpendicular surfaces of the adjustment block are pressed against the two adjacent square tubes to ensure the verticality between the square tubes, which has met the frame welding requirements. This frame welding tool solves the requirements of simple frame welding verticality and flatness to a certain extent, and also improves the welding accuracy.

[0004] However, this technical measure has its shortcomings. It can only be applied to the guarantee of simple plane welding dimensions, and only when the square tube plane is very high can a higher flatness be guaranteed. However, in reality, most square tubes are formed and welded by iron plates. The existence of the weld makes one side of the square tube have obvious unevenness. In addition, the iron plate will also have local bulging or depression during the forming process, and warping will occur when it is close to the base plate or adjustment block, positioning pin and clamp. At the same time, manual operation is still required to ensure the size, including the blanking of the square tube and the adjustment of the adjustment block. When the blanking of the square tube is fixed in size, manual blanking will have certain measurement errors and burrs and corners generated during cutting. The adjustment of the adjustment block is not only time-consuming and laborious under manual operation, but also cannot ensure that the position is fixed at each time during adjustment. The abutment between the adjustment block and the square tube will occasionally have line contact and non-contact phenomena. These situations not only increase the welding time to a certain extent, but also have great shortcomings in ensuring dimensional accuracy. Summary of the invention

[0005] The present invention aims to provide a hexagonal frame auxiliary welding tool that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, so as to solve the problem that the adjustment of the adjustment block under manual operation is not only time-consuming and labor-intensive, but also cannot well ensure that the position is in a fixed position each time during adjustment, and the abutment between the adjustment block and the square tube may occasionally have line contact and non-contact phenomena. These situations not only increase the welding time to a certain extent, but also have great deficiencies in ensuring dimensional accuracy.

[0006] To achieve the above object, the technical solution of the present invention is specifically implemented as follows:

[0007] The present invention provides a hexagonal frame auxiliary welding tool, comprising a base plane plate and a base square tube bracket, wherein the base square tube bracket is fixedly arranged on the bottom surface of the base plane plate, the base plane plate is connected with the base square tube bracket, a linear guide slider of a left fixed bracket and a right movable bracket, a laser ranging sensor is arranged on the rear end of the left fixed bracket, an anti-rollover bracket is fixed between the left fixed bracket and the right movable bracket and at a position close to the right movable bracket, a motor controller is installed on the top surface of the base plane plate, and the motor controller drives the motor to move through a signal of the laser ranging sensor to reach a set distance.

[0008] As a further solution of the present invention, the right movable bracket includes a front limit plate, a lower limit plate, a side lower limit tube, a side upper limit tube, a side lower limit plate, a side middle limit plate, a side upper limit plate, a slider, a linear guide rail, a slider limit block, a nut slider, a screw guide rail, a servo drive motor, a side middle limit tube and a pad, and the front limit plate is an L-shaped steel plate, which is used to fix the position of the front plate through the two front limit plates of the left fixed bracket and the right movable bracket.

[0009] As a further solution of the present invention, the L-shaped steel plates of the lower limit plate and the front limit plate form two perpendicular surfaces for fixing the position of the side lower tube, the front end of the side lower tube is close to one side of the L-shaped steel plate of the front limit plate, the side lower limit plate is a U-shaped steel plate, and the angle with the horizontal plane is 82°, the side upper vertical tube is in contact with three surfaces of the side lower limit plate, and the other end is in contact with the lower bottom plate for fixing the position of the side upper vertical tube, the left fixed bracket and the right movable bracket each have two side lower limit plates for fixing the side upper vertical tubes.

[0010] As a further solution of the present invention, the angle between the lower side limit tube and the side middle limit tube and the horizontal plane is 78°, and they are in contact with one side of the upper side vertical tube to ensure that the angle between the upper side vertical tube and the horizontal plane is 78°. A side middle limit plate is provided on the side of the middle part of the side middle limit tube that contacts the upper side vertical tube. The side middle limit plate is an L-shaped steel plate that forms an angle of 90° with the side middle limit tube. The side middle tube is in contact with the surface of the side middle limit plate and the side middle limit tube to determine the position of the side middle tube.

[0011] As a further solution of the present invention, the side limit plates are located on both sides of the side middle limit tube, forming three-sided limitations with the side middle limit tube, the side upper vertical tube is in contact with the side middle limit tube and the two side limit plates, fixing the position of the side upper vertical tube, the linear guide rail slider structure includes a linear guide rail and a slider, the front and rear linear guide rail slider structures are parallel to each other, ensuring the precise linear movement of the movable bracket in the horizontal direction.

[0012] As a further solution of the present invention, a slider limit block is fixed on the rightmost end of the linear guide rail to ensure that the slider will not exceed the right limit position to avoid derailment. The nut slider and the screw guide rail constitute a screw nut structure. The nut slider is connected to the movable bracket and is driven by a servo drive motor to realize the left and right linear movement of the movable bracket. At the same time, the motor is locked after reaching the set position to realize the function of fixing the position.

[0013] As a further solution of the present invention, the two pads are located under the side lower tube and in contact with the side lower tube, ensuring that the vertical distance between the side lower tube and the front plate remains constant, and the left fixed bracket and the right movable bracket are mirror-distributed, so that the right movable bracket becomes a fixed square tube bracket of the same height.

[0014] The present invention provides a hexagonal frame auxiliary welding tool, which has the following beneficial effects:

[0015] 1. The present invention fixes the square tube positioning position of the hexagonal frame by means of a horizontal positioning plate and a vertical positioning plate, which facilitates the position determination of each part of the hexagonal frame and avoids repeated operations of manual measurement and positioning and errors in manual measurement;

[0016] Second, the present invention drives the horizontal movement of the movable bracket by a servo drive motor, thereby solving the inconvenience of disassembling the hexagonal frame of the fixed bracket after welding, and also uses the closed-loop control of the servo motor to accurately ensure the accuracy of the horizontal distance between the hexagonal frames;

[0017] 3. The present invention adopts a linear guide rail to ensure the straightness of the movement of the mobile bracket, solves the shortcoming of the traditional V-shaped groove that only has point contact, and avoids the up and down jumping of the V-shaped groove and the swing of linear movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 3D is a three-dimensional diagram of a hexagonal frame in an embodiment of the present invention.

[0020] Figure 2 It is a three-dimensional diagram of the right movable bracket in an embodiment of the present invention.

[0021] Figure 3 It is a three-dimensional diagram of the auxiliary welding tool in the embodiment of the present invention. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0023] First, if Figure 1The figure shows a hexagonal frame to be welded, wherein 1 is a front plate, 2 is a side lower tube, 3 is a side middle tube, 4 is a side upper tube, 5 is a side lower vertical plate, 6 is a side upper vertical tube, 7 is an upper middle plate, 8 is an upper plate, 9 is a rear lower tube, 10 is a side upper plate, and 11 is a lower tube. The side lower tube 2 is perpendicular to and close to the front plate 1, and the side lower vertical plate 5 and the side lower tube 2 are perpendicular to the side lower tube 2 in the vertical direction, and the angle between the side lower tube 2 and the side lower tube 2 is 98° in the horizontal plane. The front end of the side middle tube 3 is closely connected to the notch of the front plate 1 and connects the two side lower vertical plates 5, and the side upper vertical tube 6 has an angle of 78° with the side lower tube 2 and connects the side middle tube 3 and the side upper tube 4. The side upper plate 10 is in a rectangular frame surrounded by the side middle tube 3, the side upper vertical tube 6 and the side upper tube 4, and is aligned with the three. The side upper tube 4 is connected to the upper plate 8 and the side upper vertical tube 6, and is aligned with the front end of the side upper plate 10. The upper plate 8 is used to fix the two side upper tubes 4 and the distance between them. The upper middle plate 7 is evenly distributed in the gap between the two upper plates 8. The lower tube 10 is used to fix the two side lower tubes 2 and the distance between them, and is evenly distributed between the front plate 1 and the rear lower tube 9.

[0024] See also Figure 1-3 A hexagonal frame auxiliary welding tool provided by an embodiment of the present invention includes a base plane plate 28 and a base square tube bracket 27. The base square tube bracket 27 is fixedly arranged on the bottom surface of the base plane plate 28. The base plane plate 28 is connected with the base square tube bracket 27, the linear guide slider of the left fixed bracket and the right movable bracket, which is an important basis for ensuring the flatness of the welding tool. A laser ranging sensor 29 is provided on the rear end of the left fixed bracket. An anti-rollover bracket 30 is fixed between the left fixed bracket and the right movable bracket and at a position close to the right movable bracket. A motor controller 31 is installed on the top surface of the base plane plate 28. The motor controller 31 drives the motor to move through the signal of the laser ranging sensor 29 to reach the set distance.

[0025] In the present device, the base square tube bracket 27 fixes and supports the base flat plate 28, and the base square tube bracket 27 is in contact with the ground to ensure the stability of the entire welding tooling, and the distance between the left fixed bracket and the right movable bracket is measured with an accuracy of 0.05mm. In addition, when the right movable bracket moves backward, the hexagonal frame loses the limit fixation of the right movable bracket, so as not to tip over and damage the hexagonal frame.

[0026] See also Figure 1-3The right movable bracket includes a front limit plate 12, a lower limit plate 13, a side lower limit tube 14, a side upper limit tube 15, a side lower limit plate 16, a side middle limit plate 17, a side upper limit plate 18, a slider 19, a linear guide rail 20, a slider limit block 21, a nut slider 22, a screw guide rail 23, a servo drive motor 24, a side middle limit tube 25 and a pad 26. The front limit plate 12 is an L-shaped steel plate, and the two front limit plates 12 of the left fixed bracket and the right movable bracket are used to fix the position of the front plate 1.

[0027] See also Figure 1-3 The L-shaped steel plates of the lower limit plate 13 and the front limit plate 12 form two perpendicular surfaces for fixing the position of the side lower tube 2. The front end of the side lower tube 2 is close to one surface of the L-shaped steel plate of the front limit plate 12. The side lower limit plate 16 is a U-shaped steel plate with an angle of 82° with the horizontal plane. The side upper vertical tube 6 is in contact with three surfaces of the side lower limit plate 16, and the other end is in contact with the lower bottom plate to fix the position of the side upper vertical tube 6. The left fixed bracket and the right movable bracket each have two side lower limit plates 16 for fixing the four side upper vertical tubes 6.

[0028] See also Figure 1-3 The angle between the side lower limit tube 14 and the side middle limit tube 25 and the horizontal plane is 78°, and they are in contact with one side of the side upper vertical tube 6 to ensure that the angle between the side upper vertical tube 6 and the horizontal plane is 78°. A side middle limit plate 17 is provided on the side of the side middle limit tube 25 that contacts the side upper vertical tube 6 in the middle part. The side middle limit plate 17 is an L-shaped steel plate and forms an angle of 90° with the side middle limit tube 25. The side middle tube 3 is in contact with the surface of the side middle limit plate 17 and the side middle limit tube 25 to determine the position of the side middle tube 3.

[0029] See also Figure 1-3 The side upper limit plates 18 are located on both sides of the side middle limit tube 25, forming three-sided restrictions with the side middle limit tube 25. The side upper vertical tube 6 is in surface contact with the side middle limit tube 25 and the two side upper limit plates 18 to fix the position of the side upper vertical tube 6. The linear guide slider structure includes a linear guide 20 and a slider 19. The front and rear linear guide slider structures are parallel to each other, ensuring the precise linear movement of the movable bracket in the horizontal direction.

[0030] See also Figure 1-3 A slider limit block 21 is fixed on the rightmost end of the linear guide rail 20 to ensure that the slider will not exceed the right limit position to avoid derailment. The nut slider 22 and the screw guide rail 23 form a screw nut structure. The nut slider 22 is connected to the movable bracket and is driven by the servo drive motor 24 to realize the left and right linear movement of the movable bracket. At the same time, the motor is locked after reaching the set position to realize the function of fixing the position.

[0031] See also Figure 1-3 The two pads 26 are located below the side lower tube 2 and in contact with the side lower tube 2, ensuring that the vertical distance between the side lower tube 2 and the front plate 1 remains constant. The left fixed bracket and the right movable bracket are mirror-distributed, so that the right movable bracket becomes a fixed square tube bracket of the same height.

[0032] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A hexagonal frame auxiliary welding tool, comprising a base plane plate (28) and a base square tube bracket (27), wherein the base square tube bracket (27) is fixedly arranged on the bottom surface of the base plane plate (28), characterized in that: The base plane plate (28) is connected to the base square tube bracket (27), the left fixed bracket and the linear guide slider of the right movable bracket. A laser distance sensor (29) is provided on the rear end of the left fixed bracket. An anti-rollover bracket (30) is fixed between the left fixed bracket and the right movable bracket and at a position close to the right movable bracket. A motor controller (31) is installed on the top surface of the base plane plate (28). The motor controller (31) drives the motor to move according to the signal of the laser distance sensor (29) to reach a set distance. The right movable bracket comprises a front limit plate (12), a lower limit plate (13), a side lower limit tube (14), a side upper limit tube (15), a side lower limit plate (16), a side middle limit plate (17), a side upper limit plate (18), a slider (19), a linear guide rail (20), a slider limit block (21), a nut slider (22), a screw guide rail (23), a servo drive motor (24), a side middle limit tube (25) and a pad (26); the front limit plate (12) is an L-shaped steel plate, and is used to fix the position of the front plate (1) through the two front limit plates (12) of the left fixed bracket and the right movable bracket.

2. The hexagonal frame auxiliary welding tool according to claim 1 is characterized in that: The L-shaped steel plates of the lower limit plate (13) and the front limit plate (12) form two mutually perpendicular surfaces for fixing the position of the side lower tube (2). The front end of the side lower tube (2) is close to one side of the L-shaped steel plate of the front limit plate (12). The side lower limit plate (16) is a U-shaped steel plate with an angle of 82° with the horizontal plane. The side upper vertical tube (6) contacts three surfaces of the side lower limit plate (16) and the other end contacts the lower bottom plate for fixing the position of the side upper vertical tube (6). The left fixed bracket and the right movable bracket each have two side lower limit plates (16) for fixing the four side upper vertical tubes (6).

3. The hexagonal frame auxiliary welding tool according to claim 2 is characterized in that: The side lower limiting tube (14) and the side middle limiting tube (25) have an angle of 78° with the horizontal plane, and are in contact with one surface of the side upper vertical tube (6), ensuring that the angle between the side upper vertical tube (6) and the horizontal plane is 78°. A side middle limiting plate (17) is provided on the side of the side middle limiting tube (25) in the middle part of the side upper vertical tube (6) in contact with the side upper vertical tube (6). The side middle limiting plate (17) is an L-shaped steel plate, and forms an angle of 90° with the side middle limiting tube (25). The side middle tube (3) is in contact with the surface of the side middle limiting plate (17) and the side middle limiting tube (25), thereby determining the position of the side middle tube (3).

4. The hexagonal frame auxiliary welding tool according to claim 3 is characterized in that: The side upper limit plates (18) are located on both sides of the side middle limit tube (25) to form three-sided restrictions with the side middle limit tube (25); the side upper vertical tube (6) is in surface contact with the side middle limit tube (25) and the two side upper limit plates (18) to fix the position of the side upper vertical tube (6); the linear guide rail slider structure includes a linear guide rail (20) and a slider (19); the front and rear linear guide rail slider structures are parallel to each other to ensure the precise linear movement of the movable bracket in the horizontal direction.

5. The hexagonal frame auxiliary welding tool according to claim 4 is characterized in that: A slider limit block (21) is fixed on the rightmost end of the linear guide rail (20) to ensure that the slider does not exceed the right limit position to avoid derailment. The nut slider (22) and the screw guide rail (23) form a screw nut structure. The nut slider (22) is connected to the movable bracket and driven by a servo drive motor (24) to achieve left and right linear movement of the movable bracket. At the same time, the motor is locked after reaching the set position to achieve the function of fixing the position.

6. The hexagonal frame auxiliary welding tool according to claim 5 is characterized in that: The two pads (26) are located below the side lower tube (2) and in contact with the side lower tube (2), ensuring that the vertical spacing between the side lower tube (2) and the front plate (1) remains constant. The left fixed bracket and the right movable bracket are distributed in a mirror image, so that the right movable bracket becomes a fixed square tube bracket of the same height.

Images