Positioning tool clamp for heavy automobile accessory welding

Abstract

The invention discloses a positioning tool clamp for heavy automobile accessory welding in the technical field of heavy automobile accessory welding, which comprises a bottom plate and a welding mechanism, and further comprises at least two supporting seats symmetrically distributed on the bottom plate and used for bearing two ends of angle steel, and at least one supporting seat can rotate; the attaching unit is located on the supporting base and can attach the inner wall of the placed angle steel; the first rotating shaft is fixed on the bottom plate and is coaxial with the rotation center of the supporting seat; the two ends of the telescopic baffle are fixedly connected with the first rotating shaft and the non-rotating supporting base respectively, one end of the second baffle is rotatably and fixedly connected, and the other end of the second baffle is rotatably connected with the first rotating shaft; the sliding groove is formed in the bottom plate, a guide shaft is connected into the sliding groove in a sliding mode, and the guide shaft is fixedly installed at the bottom of a supporting seat capable of rotating; the production quality of the tripod can be better guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding of heavy truck parts, in particular to a positioning fixture for welding of heavy truck parts. Background Art

[0002] The tripod made of angle steel welding is one of the important accessories of Sinotruk. It is widely used in exposed supporting parts and consumables of Sinotruk, for example, various supporting beams including fuel tanks.

[0003] See also Figure 1 In order to reduce the amount of welding and improve the consistency of the product, the tripod is usually cut into an L-shape after the angle steel is bent during the production process; however, in order to reduce the harmful deformation of the angle steel, the existing bending equipment usually needs to be highly fitted to the bent part of the angle steel, which also leads to the bending of the actuator blocking the weld after bending (such as Figure 1 Column 1 in the figure), so after the angle steel is bent, it needs to be transferred to the welding equipment for welding; because the angle steel itself has a certain elasticity, the angle steel will usually rebound during the process of being transferred from the bending equipment to the welding equipment; therefore, during welding, the staff needs to apply pressing force to the angle steel to keep the bending angle; this will cause the angle steel in the high-temperature welding state to be easily deformed when subjected to the applied pressing force, and the angle of the angle steel after welding will deviate, which will cause the supported parts to be in an uneven state in actual application, which will increase the difficulty of replacing the angle steel on the one hand, and at the same time, the risk of damage to the supported parts on the surface of the tripod will be greatly increased due to the vibration of the tripod caused by the driving of the vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning fixture for welding heavy truck parts to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning fixture for welding Sinotruk parts, including a base plate and a welding mechanism, and also including: at least two support seats, which are symmetrically distributed on the base plate to support the two ends of the angle steel, and at least one support seat can rotate; a fitting unit, which is located on the support seat and can fit the inner wall of the placed angle steel; a first rotating shaft, which is fixed to the base plate and coaxial with the rotation center of the support seat; a telescopic baffle, whose two ends are respectively fixedly connected to the first rotating shaft and the non-rotating support seat, and a second baffle, one end of which is fixedly connected to a rotatable fixed connection and the other end of which is rotatably connected to the first rotating shaft; a slide groove, which is opened on the base plate, and a guide shaft is slidably connected in the slide groove, and the guide shaft is fixedly installed on the bottom of the rotatable support seat; a driving unit, which is arranged on the base plate and is used to drive the support seat to move along the slide groove through the guide shaft.

[0006] As a further solution of the present invention, the bonding unit includes a pressure plate slidably connected to the support seat; the pressure plate is provided with a first spring for its reset; the end of the pressure plate close to the first rotating shaft is set as a wedge surface, and the pressure plate is provided with an avoidance block.

[0007] As a further solution of the present invention, the driving unit includes a first gear, which is fixedly mounted on a guide shaft, and the first gear is meshed with an arcuate rack rod, and the arcuate rack rod has the same shape as the slide groove; the arcuate rack rod is fixedly connected to a base plate; a first sprocket is fixedly connected to the rotating shaft of the first gear, and the first sprocket is connected to a second sprocket through a chain transmission, and a second rotating shaft is fixedly connected to the center of the second sprocket, and the second rotating shaft is rotatably connected to the base plate, and a fixed plate is fixedly connected to the second rotating shaft, and the second sprocket is rotatably connected to the fixed plate; a driving motor is fixedly connected to the fixed plate, and the driving motor is transmission-connected to the second sprocket.

[0008] As a further solution of the present invention, a second spring is fixedly connected to the support seat on the left side, and the end of the second spring away from the support seat is fixedly connected to the first slider, the first slider is slidably installed with the base plate, and a wedge block is provided on the side of the first slider, and the wedge block is slidably connected to the base plate; a connecting rod is rotatably connected to the wedge block, and the end of the connecting rod away from the wedge block is rotatably connected to the second rack rod, and the second rack rod is slidably connected to the base plate; the second rack rod is meshed with a second gear, and the second gear is fixedly connected to the second rotating shaft.

[0009] As a further solution of the present invention, a T-shaped slot is provided on the pressure plate, and a T-shaped block which can be plugged into the T-shaped slot is fixedly connected to the avoidance block.

[0010] As a further solution of the present invention, the support seats are rotatably connected to rotating rollers.

[0011] As a further solution of the present invention, a micro motor is fixedly connected to the support seat, and the output shaft of the micro motor is fixedly connected to the rotating shaft of the rotating roller.

[0012] As a further solution of the present invention, a plurality of baffle bars are slidably connected to the bottom plate, and the plurality of baffle bars are distributed in a circular array about the first rotating shaft.

[0013] As a further solution of the present invention, the welding mechanism includes a support plate, a linear motor is mounted on the support plate, a fixed seat is transmission-connected to the linear motor, a cylinder is fixedly connected to the fixed seat, and a welding head is fixedly connected to the output end of the cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges the support seat, the pressure plate, the avoidance block and the driving assembly. The two support seats can cooperate with the pressure plate to fix the position of the angle steel. At the same time, the pressure plate can provide a support point for the angle steel when the angle steel is bent, so that the angle steel can be bent around the end of the pressure plate. At the same time, the arrangement of the two avoidance blocks can enable the two pressure plates to move outward when the angle steel completes bending, thereby gradually avoiding the welding position, so that a sufficient gap can be formed between the two pressure plates, so that the welding mechanism can directly weld when the angle steel maintains the bending angle, so as to ensure that the angle steel will not deviate during welding, and the production quality of the tripod can be better guaranteed. The pressure plate can also block the splashing welding slag in the cavity formed by the two pressure plates, the avoidance block and the workpiece, so as to avoid the splashing of welding slag and scalding the staff. At the same time, the vertical side wall of the pressure plate can also have a certain blocking effect on the welding light, which can greatly reduce the light pollution in the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the working principle of the prior art; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention (looking from above); Figure 4 This is a schematic diagram of the structure of the drive unit of the present invention; Figure 5 It is an exploded view of part of the structure of the present invention; Figure 6 It is a schematic diagram of the structure of the pressing plate, the avoidance block and the T-shaped block of the present invention; Figure 7 It is a partial structural schematic diagram of the present invention; Figure 8 It is a schematic diagram of the working state of the present invention.

[0016] The accompanying drawings are marked as follows: 1-base plate, 2-support seat, 3-telescopic baffle, 4-first rotating shaft, 5-second baffle, 6-slide groove, 7-guide shaft, 8-pressure plate, 9-first spring, 10-avoidance block, 11-first gear, 12-arc-shaped rack rod, 13-first sprocket, 14-chain, 15-second sprocket, 16-second rotating shaft, 17-fixed plate, 18-drive motor, 19-second spring, 20-first slider, 21-wedge block, 22-connecting rod, 23-second rack rod, 24-second gear, 25-T-shaped block, 26-rotating roller, 27-micro motor, 28-baffle rod, 29-support plate, 30-linear motor, 31-fixed seat, 32-cylinder, 33-welding head. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 8 The present invention provides a technical solution: a positioning fixture for welding heavy truck parts, including a base plate 1 and a welding mechanism, and also including a support seat 2, a bonding unit, a first rotating shaft 4, a telescopic baffle 3, a second baffle 5, a slide 6 and a driving unit; there are at least two support seats 2, which are symmetrically distributed on the base plate 1 to support the two ends of the angle steel, and at least one support seat 2 can rotate; the bonding unit is located on the support seat 2 and can bond the inner wall of the placed angle steel; the first rotating shaft 4 is fixed on the base plate 1 and is coaxial with the rotation center of the support seat 2; the two ends of the telescopic baffle 3 are respectively connected to the first rotating shaft 4 and the non-rotating The movable support seat 2 is fixedly connected, one end of the second baffle 5 is fixedly connected to the rotatable 2, and the other end is rotatably connected to the first rotating shaft 4; a slide groove 6 is opened on the bottom plate 1, and a guide shaft 7 is slidably connected in the slide groove 6, and the guide shaft 7 is fixedly installed at the bottom of the rotatable support seat 2; the driving unit is arranged on the bottom plate 1, and is used to drive the support seat 2 to move along the slide groove 6 through the guide shaft 7; the fitting unit includes a pressing plate 8 slidably connected to the support seat 2; the pressing plate 8 is provided with a first spring 9 for its reset; the end of the pressing plate 8 close to the first rotating shaft 4 is set to a wedge surface, and the pressing plate 8 is provided with an avoidance block 10.

[0019] For the sake of clarity, see Figure 2 , Figure 2 The support seat 2 on the left side is a non-rotating support seat, and the support seat on the right side is a rotatable support seat 2; the staff puts the angle steel after cutting and notching on the top of the bottom plate 1, and makes the rear side wall of the angle steel fit with the telescopic baffle 3 and the second baffle 5, and then pushes the angle steel to the right to make the right side wall of the angle steel fit with the support seat 2 on the right; then the staff pushes the support seat 2 on the left side to move to the right to make the left side wall of the angle steel fit with the support seat 2 on the left, and then fixes the support seat 2 on the left side; at this time, the angle steel is located between the two support seats 2, and the two ends are respectively fitted with the two support seats 2, and then the staff releases the pressing plate 8; it should be noted that, in the case Figure 2In the initial state shown, the first spring 9 is in a stretched state, and the pressure plate 8 is limited by the limit assembly set on the support seat 2 and cannot move; the limit assembly can be implemented by pressing the pressure plate 8 with a set bolt, or by a latch to realize the latch of the lateral position of the pressure plate. After the angle steel is installed, the staff cancels the fixation of the pressure plate 8 by rotating the screw, etc.; then the pressure plate 8 can move to the side close to the first rotating shaft 4 under the elastic force of the first spring 9; the two pressure plates 8 will move to the position as shown in the figure. Figure 7 The state shown; then the bending work can be started, the driving unit will drive the guide shaft 7, the right support seat 2 and the right pressure plate 8 to rotate with the first rotating shaft 4 as the center, and the guide shaft 7 will slide in the slide groove 6 (in this process, the pressure plate 8 cooperates with the second baffle 5 to achieve high-fitting bending of the angle steel, on the one hand to ensure the accuracy of the bending point, and on the other hand to ensure that the non-bending part of the angle steel does not deform); at this time, the end of the two pressure plates 8 close to each other will provide a stable support point for the rotation of the angle steel, so that the angle steel can be strictly bent around the end of the pressure plate 8. Since the distance between the pressure plate 8 and the right support seat 2 is kept constant, it can ensure that the specifications of the tripod are consistent after the angle steel is bent and subsequently welded, and the quality stability of the tripod produced in batches can be greatly improved; when the right pressure plate 8 drives the right avoidance block 10 to rotate to contact the left avoidance block 10, the two avoidance blocks will abut each other, and under the action of the two avoidance blocks 10, the two pressure plates 8 will move outward as the bending action proceeds, thereby gradually avoiding the welding position, and when the support seat 2 drives the angle steel to rotate to Figure 8 In the welding state shown, a sufficient gap will be formed between the two pressure plates 8, and the subsequent welding mechanism can directly carry out welding. At the same time, the two support seats 2 and the pressure plate 8 can maintain the state of fixing the angle steel, which can ensure that the angle steel will not shift during welding, and can better ensure the production quality of the tripod. The pressure plate 8 can also block the splashing welding slag in the cavity formed by the two pressure plates 8, the avoidance block 10, the workpiece and the welding equipment, which can avoid the splashing of welding slag. At the same time, the vertical side wall of the pressure plate 8 can also have a certain blocking effect on the welding light, which can greatly reduce the light pollution during the welding process; after the welding is completed, the staff will pull the two pressure plates 8 outward and fix them, and then remove the welded tripod from the base plate 1; after the driving component drives the support seat 2 on the right to move back to the initial position, the staff can place the next angle steel to be processed on the base plate 1 for processing.

[0020] Specifically, Figure 2-Figure 5As shown, the driving unit includes a first gear 11, which is fixedly mounted on the guide shaft 7, and the first gear 11 is meshed with an arcuate rack rod 12, and the arcuate rack rod 12 has the same shape as the slide groove 6; the arcuate rack rod 12 is fixedly connected to the base plate 1; a first sprocket 13 is fixedly connected to the rotating shaft of the first gear 11, and the first sprocket 13 is connected to the second sprocket 15 through a chain 14, and the center of the second sprocket 15 is fixedly connected to a second rotating shaft 16, and the second rotating shaft 16 is rotatably connected to the base plate 1, and a fixed plate 17 is fixedly connected to the second rotating shaft 16, and the second sprocket 15 is rotatably connected to the fixed plate 17; a driving motor 18 is fixedly connected to the fixed plate 17, and the driving motor 18 is connected to the second sprocket 15.

[0021] When the driving motor 18 is started, the driving motor 18 will drive the second rotating shaft 16 to rotate, and the second rotating shaft 16 will drive the second sprocket 15 to rotate, and the second sprocket 15 will drive the first sprocket 13 to rotate synchronously through the chain, and the first sprocket 13 will drive the first gear 11 to rotate synchronously. When the first gear 11 rotates, it will rotate and move under the action of the arc-shaped rack rod 12. At this time, the first gear 11 will rotate with the second rotating shaft 16 as the center of the circle, and the fixed plate 17 plays a supporting role; the first gear 11 will drive the guide shaft 7 to move in the slide groove 6, and the guide shaft 7 will drive the support seat 2 on the right side to rotate, and the support seat 2 will drive the second baffle plate 5, the pressure plate 8 and the right end of the angle steel to rotate synchronously, so that the angle steel completes the bending work; after the angle steel completes the bending work, the driving motor 18 stops working; the support seat 2 stops and the angle steel remains in the bent state; after the welding is completed, the driving motor 18 drives the second rotating shaft 16 to rotate in the opposite direction, so that the support seat 2 on the right side rotates back to the initial position.

[0022] Specifically, Figure 5 As shown, a second spring 19 is fixedly connected to the left support seat 2, and a first slider 20 is fixedly connected to the end of the second spring 19 away from the support seat 2. The first slider 20 is slidably installed with the base plate 1, and a wedge block 21 is provided on the side of the first slider 20, and the wedge block 21 is slidably connected to the base plate 1; a connecting rod 22 is rotatably connected to the wedge block 21, and an end of the connecting rod 22 away from the wedge block 21 is rotatably connected to the second rack rod 23, and the second rack rod 23 is slidably connected to the base plate 1; the second rack rod 23 is meshed with a second gear 24, and the second gear 24 is fixedly connected to the second rotating shaft 16.

[0023] When the staff pushes the left support seat 2 to move right so that the left support seat 2 fits with the angle steel, the left support seat 2 will drive the second spring 19 and the first slide block 20 to move right synchronously. When the support seat 2 moves to fit with the angle steel, the first slide block 20 will move to the inner side of the wedge block 21; when the bending work starts, the driving motor 18 drives the second rotating shaft 16 to rotate, the second rotating shaft 16 will drive the second gear 24 to rotate synchronously, and the second gear 24 will drive the second rack rod 23 to move away from the wedge block 21. The second rack rod 23 will drive the wedge block 21 to move toward the side close to the first slide block 20 through the connecting rod 23. The wedge surface of the wedge block 21 will drive the first slide block 20 to move toward the side close to the support seat 2, and the first slide block 20 will drive the second spring 19 to compress and press the left support seat 2. At this time, the left support seat 2 is automatically fixed, and the staff does not need to fix it manually, which can improve the production efficiency of the tripod.

[0024] Specifically, Figure 6 As shown, a T-shaped slot is provided on the pressing plate 8, and a T-shaped block 25 which can be plugged into the T-shaped slot is fixedly connected to the avoidance block 10.

[0025] By matching the T-shaped slot with the T-shaped block 25, the avoidance block 10 is detachably mounted on the pressure plate 8; by replacing the avoidance blocks 10 of different specifications, the size of the gap formed between the two pressure plates 8 during welding can be adjusted. Figure 8 When the angle at which the angle steel needs to be bent changes, the pressure plate 8 can be made to avoid at different angles by plugging in avoidance blocks 10 of different specifications, which can make it more convenient for workers to perform welding operations.

[0026] Specifically, Figure 5 As shown, the support seat 2 is rotatably connected with a rotating roller 26 .

[0027] By setting the rotating roller 26, the sliding friction of the pressing plate 8 is converted into rolling friction when sliding on the supporting seat 2, which makes it easier for the staff to push the pressing plate 8 to move.

[0028] Specifically, Figure 5 As shown, a micro motor 27 is fixedly connected to the support seat 2 , and the output shaft of the micro motor 27 is fixedly connected to the rotating shaft of the rotating roller 26 .

[0029] The rotation of the rotating roller 26 can be controlled by the micro motor 27, and the rotation of the rotating roller 26 can drive the pressing plate 8 to move on the supporting seat 2, so that the automatic movement of the pressing plate 8 can be realized, and the staff does not need to manually push the pressing plate 8, which can greatly reduce the workload of the staff.

[0030] Specifically, Figure 2As shown, a plurality of blocking rods 28 are slidably connected to the bottom plate 1 , and the plurality of blocking rods 28 are distributed in a circular array about the first rotating shaft 4 .

[0031] Multiple baffles 28 correspond to different bending angles, and the staff can adjust the bending angle according to actual needs; then push the baffle 28 to move closer to the inside of the slide groove 6, so that the baffle 28 is inserted into the slide groove 6, and when the guide shaft moves in the slide groove 6 to contact the baffle 28, the angle steel rotates to the welding position.

[0032] Specifically, Figure 2 As shown, the welding mechanism includes a support plate 29, a linear motor 30 is mounted on the support plate 29, a fixed seat 31 is transmission-connected to the linear motor 30, a cylinder 32 is fixedly connected to the fixed seat 31, and a welding head 33 is fixedly connected to the output end of the cylinder 32.

[0033] When the welding mechanism needs to work, the cylinder 32 drives the welding head 33 to move downward so that the bottom end of the welding head 33 is aligned with the welding head 33. Figure 8 As shown, the weld is in contact, and then the welding head performs welding again. The linear motor 30 can drive the fixed seat 31 to drive the cylinder 32 and the welding head 33 to move along the weld; after the welding is completed, the cylinder 32 and the linear motor 30 drive the welding head 33 to move back to the initial state.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for welding a heavy truck component, comprising a base plate (1) and a welding mechanism, characterized in that: Also includes, There are at least two support seats (2) symmetrically distributed on the bottom plate (1) for supporting the two ends of the angle steel, and at least one of the support seats (2) is rotatable; A fitting unit is located on the support seat (2) and is capable of fitting to the inner wall of the angle steel that has been placed; A first rotating shaft (4) is fixed on the base plate (1) and is coaxial with the rotation center of the support seat (2); The telescopic baffle (3) has two ends fixedly connected to the first rotating shaft (4) and the non-rotating support seat (2), respectively. A second baffle (5), one end of which is fixedly connected to the rotatable (2), and the other end of which is rotatably connected to the first rotating shaft (4); A slide groove (6) is provided on the bottom plate (1), a guide shaft (7) is slidably connected in the slide groove (6), and the guide shaft (7) is fixedly mounted on the bottom of the rotatable support seat (2); The driving unit is arranged on the base plate (1) and is used to drive the support seat (2) to move along the slide groove (6) via the guide shaft (7).

2. A positioning fixture for welding heavy truck parts according to claim 1, characterized in that: The laminating unit comprises a pressing plate (8) slidably connected to the supporting seat (2); the pressing plate (8) is provided with a first spring (9) for resetting the pressing plate (8); one end of the pressing plate (8) close to the first rotating shaft (4) is provided with a wedge-shaped surface, and the pressing plate (8) is provided with an avoidance block (10).

3. A positioning fixture for welding of heavy truck parts according to claim 2, characterized in that: The driving unit comprises a first gear (11), the first gear (11) being fixedly mounted on a guide shaft (7), the first gear (11) being meshed with an arc-shaped rack rod (12), the arc-shaped rack rod (12) being of the same shape as the slide groove (6); the arc-shaped rack rod (12) being fixedly connected to the base plate (1); a first sprocket (13) being fixedly connected to the rotating shaft of the first gear (11), the first sprocket (13) being transmission-connected to a second sprocket (15) via a chain (14), the center of the second sprocket (15) being fixedly connected to a second rotating shaft (16), the second rotating shaft (16) being rotationally connected to the base plate (1), a fixed plate (17) being fixedly connected to the second rotating shaft (16), the second sprocket (15) being rotationally connected to the fixed plate (17); a driving motor (18) being fixedly connected to the fixed plate (17), the driving motor (18) being transmission-connected to the second sprocket (15).

4. A positioning fixture for welding of heavy truck parts according to claim 3, characterized in that: A second spring (19) is fixedly connected to the support seat (2) on the left side, and a first slider (20) is fixedly connected to one end of the second spring (19) away from the support seat (2). The first slider (20) is slidably mounted on the bottom plate (1). A wedge block (21) is provided on the side of the first slider (20), and the wedge block (21) is slidably connected to the bottom plate (1); a connecting rod (22) is rotatably connected to the wedge block (21), and an end of the connecting rod (22) away from the wedge block (21) is rotatably connected to a second rack rod (23), and the second rack rod (23) is slidably connected to the bottom plate (1); the second rack rod (23) is meshed with a second gear (24), and the second gear (24) is fixedly connected to the second rotating shaft (16).

5. A positioning fixture for welding of heavy truck parts according to claim 2, characterized in that: The pressing plate (8) is provided with a T-shaped slot, and the avoidance block (10) is fixedly connected with a T-shaped block (25) that can be plugged into the T-shaped slot.

6. A positioning fixture for welding of heavy truck parts according to claim 1, characterized in that: The support seats (2) are all rotatably connected to a rotating roller (26).

7. A positioning fixture for welding of heavy truck parts according to claim 1, characterized in that: The support seats (2) are all fixedly connected with micro motors (27), and the output shaft of the micro motors (27) is fixedly connected to the rotating shaft of the rotating roller (26).

8. The positioning fixture for welding of heavy truck parts according to claim 1 is characterized by: A plurality of blocking rods (28) are slidably connected to the bottom plate (1), and the plurality of blocking rods (28) are distributed in a circular array about the first rotating shaft (4).

9. The positioning fixture for welding of heavy truck parts according to claim 1, characterized in that: The welding mechanism comprises a support plate (29), a linear motor (30) is mounted on the support plate (29), a fixed seat (31) is drivingly connected to the linear motor (30), a cylinder (32) is fixedly connected to the fixed seat (31), and a welding head (33) is fixedly connected to the output end of the cylinder (32).

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