Laser welding assembly clamp for new energy automobile motor cooling oil pipe

Abstract

The utility model discloses a laser welding assembly clamp for a new energy automobile motor cooling oil pipe. The laser welding assembly clamp comprises a bottom plate, and a supporting limiting block assembly, a first abutting mechanism, a second abutting mechanism, a third abutting mechanism, a fourth abutting mechanism and a fifth abutting mechanism are arranged at the upper end of the bottom plate. The supporting limiting block assembly comprises a first supporting block, a second supporting block and a third supporting block which are sequentially distributed at intervals from front to back, and further comprises a left supporting block, a right supporting block and a fifth supporting block which are located between the first supporting block and the second supporting block, and the upper end of each supporting block is provided with a limiting groove used for containing a welding pipe fitting. An abutting block for the fixed flange to abut against is further arranged on the rear side of the second supporting block; the left side or the right side of the abutting block is further provided with a side blocking end. The upper end of the bottom plate is further provided with a flange pressing mechanism for pressing the fixing flange towards the abutting block from back to front. The clamping device can be used for assembling and clamping the cooling oil pipe of the motor of the new energy automobile in the laser welding process.

Description

Technical Field

[0001] The utility model relates to the technical field of the processing of cooling oil pipes, in particular to a laser welding assembly jig for a motor cooling oil pipe of a new energy vehicle. Background Technique

[0002] The motor is one of the important devices of a new energy vehicle. During operation, the motor generates heat. When the temperature is too high, it will affect the normal operation of the motor. Therefore, it is necessary to cool the motor. At present, the main motor cooling methods for new energy vehicles are oil cooling and liquid cooling. The oil cooling method is to pump oil into the oil pipe through an oil pump. There are holes in the internally installed oil pipe to spray the oil inside the motor, so as to achieve the dual functions of temperature reduction and lubrication.

[0003] The finished cooling oil pipe is usually a structural assembly formed by splicing and welding multiple distribution pipes. As Figure 1 shown, it is a structural schematic diagram of a finished cooling oil pipe designed according to customer requirements. The cooling oil pipe is a set of structural assemblies, including an intermediate elbow pipe A1, a left straight pipe A2, a right straight pipe A3, a lower straight pipe A4, an upper straight pipe A5, and a horizontal branch pipe A6. A number of oil through holes C are provided on the pipe walls of the intermediate elbow pipe A1, the left straight pipe A2, the right straight pipe A3, the lower straight pipe A4, the upper straight pipe A5, and the horizontal branch pipe A6; and, between the left end of the intermediate elbow pipe A1 and the pipe wall of the left straight pipe A2, between the right end of the intermediate elbow pipe A1 and the pipe wall of the right straight pipe A3, between the upper end of the lower straight pipe A4 and the pipe wall of the intermediate elbow pipe A1, between the lower end of the upper straight pipe A5 and the pipe wall of the intermediate elbow pipe A1, and between the left end of the horizontal branch pipe A6 and the pipe wall of the right straight pipe A3, an arc saddle D is respectively connected. At the same time, the inner cavities of the intermediate elbow pipe A1, the left straight pipe A2, the right straight pipe A3, the lower straight pipe A4, the upper straight pipe A5, and the horizontal branch pipe A6 communicate with each other. In addition, a fixed flange B for fixing and connecting is respectively connected to the pipe walls of the left straight pipe A2 and the right straight pipe A3, and a fixed hole B1 is provided on the fixed flange B.

[0004] To form a finished cooling oil pipe with the structure as Figure 1 shown, we envision that during the process of processing the above cooling oil pipe, it is carried out in two major steps. The first step is to form six parts to be welded as Figure 2 shown, that is, first weld two fixed flanges and 5 arc saddles to each pipe fitting respectively. After welding, it forms as Figure 2The welded pipe fittings 101 shown in the figure (including the intermediate elbow A1 and two arc saddles), the welded pipe fittings 2 102 (including the left straight pipe A2 and a fixed flange), the welded pipe fittings 3 103 (including the right straight pipe A3 and a fixed flange), the welded pipe fittings 4 104 (including the lower straight pipe A4 and an arc saddle), the welded pipe fittings 5 105 (including the upper straight pipe A5 and an arc saddle), and the welded pipe fittings 6 106 (including the horizontal branch pipe A6 and an arc saddle). Then, in the second step, the above six components to be welded are spliced and welded to form a finished cooling oil pipe as shown in Figure 1 Shown.

[0005] However, the existing single laser welding assembly fixture does not match the structural layout of the above-mentioned finished cooling oil pipe. It is impossible to clamp the six welded components at one time in a single fixture, and multiple welding stations need to cooperate and proceed sequentially. Each welding station is not integrally arranged, but is far apart, and is respectively equipped with an operator, a laser welding assembly fixture, and a welding device.

[0006] This design with each welding station separated from each other increases the equipment cost and labor cost. Moreover, after each sub-step is completed, the components to be welded need to be sent to another station for the next welding step, which also greatly consumes the time cost and manual handling cost and affects the final processing efficiency. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a laser welding assembly fixture for the cooling oil pipe of a new energy vehicle motor, aiming at the technical problem that in the prior art, when assembling and welding each welded pipe fitting to form a finished cooling oil pipe, multiple welding stations need to cooperate and proceed sequentially. The present utility model has a simple structure and lower cost.

[0008] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0009] A laser welding assembly fixture for the cooling oil pipe of a new energy vehicle motor, including a bottom plate. A support and limit block assembly, a first tightening mechanism, a second tightening mechanism, a third tightening mechanism, a fourth tightening mechanism, and a fifth tightening mechanism are provided at the upper end of the bottom plate;

[0010] The support and limit block assembly includes a first support block, a second support block, and a third support block that are sequentially spaced apart from front to back; the support and limit block assembly further includes a left support block and a right support block located between the first support block and the second support block, and a fifth support block located on the left or right side of the area where the first support block, the second support block, and the third support block are located;

[0011] A left-through elbow limit groove 1 and a right-through elbow limit groove 2 are respectively provided at the upper ends of the left support block and the right support block for placing the welded pipe fittings 1;

[0012] On the upper end of the first support block, a first limiting groove, a second limiting groove, and a third limiting groove that penetrate through from front to back are successively provided from left to right; on the upper end of the second support block, a fourth limiting groove and a fifth limiting groove that penetrate through from front to back are successively provided from left to right; on the upper end of the third support block, a sixth limiting groove, a seventh limiting groove, and an eighth limiting groove that penetrate through from front to back are successively provided from left to right; on the upper end of the fifth support block, a ninth limiting groove that penetrates through from left to right for placing the sixth welded pipe fitting is provided.

[0013] The first limiting groove, the fourth limiting groove, and the sixth limiting groove are aligned in sequence from front to back for placing the second welded pipe fitting; the third limiting groove, the fifth limiting groove, and the eighth limiting groove are aligned in sequence from front to back for placing the third welded pipe fitting; the second limiting groove and the seventh limiting groove are respectively used for placing the fourth welded pipe fitting and the fifth welded pipe fitting.

[0014] The first pressing mechanism is used to push the welding surface of the second welded pipe fitting against the left welding end face of the first welded pipe fitting; the second pressing mechanism is used to push the welding surface of the third welded pipe fitting against the right welding end face of the first welded pipe fitting; the third pressing mechanism is used to push the welding end face of the fourth welded pipe fitting against the front welding surface of the first welded pipe fitting; the fourth pressing mechanism is used to push the welding end face of the fifth welded pipe fitting against the rear welding surface of the first welded pipe fitting; the fifth pressing mechanism is used to push the left welding end face of the sixth welded pipe fitting against the right welding surface of the third welded pipe fitting.

[0015] On the rear side of the second support block, a contact block for the fixed flange to rest against is further provided; on the left side or the right side of the contact block, a side stop end is further provided; on the upper end of the bottom plate, a flange pressing mechanism for pressing the fixed flange towards the contact block from back to front is further provided.

[0016] Further, the first pressing mechanism, the second pressing mechanism, the third pressing mechanism, the fourth pressing mechanism, and the fifth pressing mechanism respectively include a pressing rod and a pressing cylinder for driving the pressing rod to move.

[0017] Or the first pressing mechanism, the second pressing mechanism, the third pressing mechanism, and the fourth pressing mechanism respectively include a pressing rod and a pressing cylinder for driving the pressing rod to move; the fifth pressing mechanism includes a threaded pressing rod and a pressing rod fixing block threadedly connected to the threaded pressing rod.

[0018] Further, the flange pressing mechanism includes a flange pressing rod and a flange pressing cylinder for driving the flange pressing rod to move back and forth.

[0019] Further, a convex platform that can be inserted into the mounting hole on the fixed flange is provided at the front end of the flange pressing rod.

[0020] Further, it further includes a second detection pin mechanism for detecting the position of the oil passage hole on the wall of the second welded pipe fitting, a third detection pin mechanism for detecting the position of the oil passage hole on the wall of the third welded pipe fitting, a fourth detection pin mechanism for detecting the position of the oil passage hole on the wall of the fourth welded pipe fitting that is pushed, a fifth detection pin mechanism for detecting the position of the oil passage hole on the wall of the fifth welded pipe fitting, and a sixth detection pin mechanism for detecting the position of the oil passage hole on the wall of the sixth welded pipe fitting.

[0021] Further, the second detection pin mechanism and the third detection pin mechanism are respectively located on the left and right sides of the area where the first support block, the second support block, and the third support block are located; and the second detection pin mechanism and the third detection pin mechanism respectively include a movable detection pin and a detection pin pushing cylinder for driving the movable detection pin to move.

[0022] The fourth detection pin mechanism is located between the first support block and the second support block; the fifth detection pin mechanism is located between the second support block and the third support block; the sixth detection pin mechanism is located in front of or behind the fifth support block; and the fourth detection pin mechanism, the fifth detection pin mechanism, and the sixth detection pin mechanism respectively include a threaded detection pin and a detection pin fixing block threadedly connected to the threaded detection pin.

[0023] Further, the front ends of the movable detection pin and the threaded detection pin are both conical.

[0024] Further, a laser welding relief hole that penetrates up and down is also provided on the bottom plate.

[0025] Compared with the prior art, the present utility model provides a laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle, having the following beneficial effects:

[0026] The laser welding assembly fixture in the present utility model is an integrated fixture. During the operation process, the laser welding assembly fixture can be used to complete the clamping operation of six welding components at one time. The six welding components placed in the fixture are arranged according to the structural layout of the finished cooling oil pipe, and after being positioned and clamped, a welding device can be used to continuously perform fixed-point welding operations to weld the six welding components together. The structure of the present utility model is simple, the operation is convenient, and the efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a finished cooling oil pipe in the present utility model.

[0028] Figure 2 is a disassembled structural schematic diagram of the finished cooling oil pipe before welding in the present utility model.

[0029] Figure 3It is a schematic structural diagram of a laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle equipped with welded pipe fittings in the present utility model.

[0030] Figure 4 It is Figure 3 the left view of.

[0031] Figure 5 It is a schematic structural diagram of a bottom plate and a support and limit block assembly in the present utility model.

[0032] Figure 6 It is a side view of a flange pressing rod in the present utility model.

[0033] In the figure:

[0034] A1 - middle elbow, A2 - left straight pipe, A3 - right straight pipe, A4 - lower straight pipe, A5 - upper straight pipe, A6 - cross branch pipe; B - fixed flange, B1 - mounting hole, C - oil through hole, D - arc saddle;

[0035] 101 - welded pipe fitting one, 102 - welded pipe fitting two, 103 - welded pipe fitting three, 104 - welded pipe fitting four, 105 - welded pipe fitting five, 106 - welded pipe fitting six;

[0036] 201 - first support block, 202 - second support block, 203 - third support block, 205 - fifth support block, 206 - left support block, 207 - right support block;

[0037] 301 - first pressing rod, 302 - second pressing rod, 303 - third pressing rod, 304 - fourth pressing rod, 305 - fifth pressing rod;

[0038] 401 - flange pressing rod, 402 - boss, 403 - shoulder, 404 - flange pressing cylinder, 501 - abutting block, 502 - laser welding relief hole;

[0039] 602 - second detection pin, 603 - third detection pin, 604 - fourth detection pin, 605 - fifth detection pin, 606 - sixth detection pin;

[0040] 701 - first elbow limit groove, 702 - second elbow limit groove;

[0041] 801 - first limit groove, 802 - second limit groove, 803 - third limit groove, 804 - fourth limit groove, 805 - fifth limit groove, 806 - sixth limit groove, 807 - seventh limit groove, 808 - eighth limit groove, 809 - ninth limit groove;

[0042] 902 - Second detection pin pushing cylinder, 903 - Third detection pin pushing cylinder, 904 - Fourth detection pin fixing block, 905 - Fifth detection pin fixing block, 906 - Sixth detection pin fixing block;

[0043] 911 - First clamping cylinder, 912 - Second clamping cylinder, 913 - Third clamping cylinder, 914 - Fourth clamping cylinder. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] As Figure 3-4 shown, the present invention provides a laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle.

[0046] The laser welding assembly fixture in this embodiment includes a bottom plate 100, and a support and limit block assembly, a clamping mechanism, and a flange pressing mechanism are provided at the upper end of the bottom plate 100.

[0047] As Figure 3 , 5 shown, the support and limit block assembly includes a first support block 201, a second support block 202, and a third support block 203 that are sequentially and spaced apart from front to back; the support and limit block assembly further includes a left support block 206 and a right support block 207 located between the first support block 201 and the second support block 202, and a fifth support block 205 located on the right side of the area where the first support block 201, the second support block 202, and the third support block 203 are located.

[0048] Moreover, a left-right through pipe bending limit groove one 701 and a left-right through pipe bending limit groove two 702 are respectively provided at the upper ends of the left support block 206 and the right support block 207. The pipe bending limit groove one 701 and the pipe bending limit groove one 701 are distributed left and right, and can be used to place the welded pipe fitting one 101.

[0049] As Figure 5As shown, on the upper end of the first support block 201, there are successively arranged from left to right a first limiting groove 801, a second limiting groove 802, and a third limiting groove 803 that penetrate through from front to back; on the upper end of the second support block 202, there are successively arranged from left to right a fourth limiting groove 804 and a fifth limiting groove 805 that penetrate through from front to back; on the upper end of the third support block 203, there are successively arranged from left to right a sixth limiting groove 806, a seventh limiting groove 807, and an eighth limiting groove 808 that penetrate through from front to back; on the upper end of the fifth support block 205, there is a ninth limiting groove 809 that penetrates through from left to right for placing the welding pipe fitting six 106.

[0050] As Figure 3 , 5 shown, the first limiting groove 801, the fourth limiting groove 804, and the sixth limiting groove 806 are aligned in sequence from front to back for placing the welding pipe fitting two 102; the third limiting groove 803, the fifth limiting groove 805, and the eighth limiting groove 808 are aligned in sequence from front to back for placing the welding pipe fitting three 103; the second limiting groove 802 and the seventh limiting groove 807 are respectively used for placing the welding pipe fitting four 104 and the welding pipe fitting five 105. And the ninth limiting groove 809 is used for placing the welding pipe fitting six 106.

[0051] In this embodiment, the three strip-shaped block support blocks (the first support block 201, the second support block 202, and the third support block 203) are distributed at intervals in the front - back direction, with an interval space left between them, which can leave a larger space and reduce the occlusion of the welding points.

[0052] Meanwhile, as Figure 3 , 4 shown, in this embodiment, the pressing mechanism includes a first pressing mechanism, a second pressing mechanism, a third pressing mechanism, a fourth pressing mechanism, and a fifth pressing mechanism.

[0053] In this embodiment, the first pressing mechanism is used to push the welding surface of the welding pipe fitting two 102 against the left welding end surface of the welding pipe fitting one 101, and includes a first pressing rod 301 and a first pressing cylinder 911 that drives the first pressing rod 301 to move.

[0054] The second pressing mechanism is used to push the welding surface of the welding pipe fitting three 103 against the right welding end surface of the welding pipe fitting one 101, and includes a second pressing rod 302 and a second pressing cylinder 912 that drives the second pressing rod 302 to move.

[0055] The third pressing mechanism is used to push the welding end surface of the welding pipe fitting four 104 against the front - side welding surface of the welding pipe fitting one 101, and includes a third pressing rod 303 and a third pressing cylinder 913 that drives the third pressing rod 303 to move.

[0056] The fourth clamping mechanism is used to push the welding end face of the welded pipe fitting five 105 against the rear welding face of the welded pipe fitting one 101, and includes a fourth clamping rod 304 and a fourth clamping cylinder 914 that drives the fourth clamping rod 304 to move.

[0057] In this embodiment, the fifth clamping mechanism is used to push the left welding end face of the welded pipe fitting six 106 against the right welding face of the welded pipe fitting three 103, and includes a fifth clamping rod 305 and a clamping rod fixing block that is threadedly connected to the fifth clamping rod 305. In the solution using the fifth clamping rod 305 and the clamping rod fixing block, the fifth clamping rod 305 is a threaded clamping rod, that is, a clamping rod with threads.

[0058] Preferably, the fifth clamping mechanism can also be selected as a solution consisting of a clamping rod and a clamping cylinder that drives the clamping rod to move. The clamping rod is connected to the clamping cylinder and moves back and forth under the drive of the clamping cylinder.

[0059] The clamping mechanisms are used to clamp the welded pipe fittings placed in the respective limiting grooves, and lock the relative positions between the welded pipe fittings.

[0060] In this embodiment, the function of the flange pressing mechanism is to press the fixed flange B against the abutting surface from back to front, and the abutting surface is the rear end face of the abutting block 501. In this embodiment, a fixed flange B for fixing and connecting is connected to the pipe wall of the left straight pipe A2 and the pipe wall of the right straight pipe A3 respectively. Therefore, correspondingly, in the laser welding assembly fixture, two abutting blocks 501 are provided at the rear side of the second support block 202. Correspondingly, there are two flange pressing mechanisms in this embodiment, and each flange pressing mechanism includes a flange pressing rod 401 and a flange pressing cylinder 404 that drives the flange pressing rod 401 to move back and forth towards the abutting surface.

[0061] At the same time, in this embodiment, a guiding through hole is also provided on the third support block 303, and the flange pressing rod 401 penetrates through the guiding through hole from back to front and presses against the rear end face of the abutting block 501. The guiding through hole is movably connected to the flange pressing rod 401, and plays a certain guiding role in the forward and backward movement of the flange pressing rod 401.

[0062] At the same time, in order to be able to more accurately position the fixed flange B, a side blocking end can also be provided on the left or right side of the abutting block 501 (this side blocking end can be the left end face or the right end face of the side blocking block provided at the upper end of the bottom plate 100). Since the fixed flange B and the left straight pipe A2 have been pre-fixed and connected before laser welding, after the fixed flange B abuts against the left end face or the right end face of the side blocking end, the left straight pipe A2 will not displace in the left-right direction or the radial direction.

[0063] During the operation, after the operator assembles the welding pipe fitting two 102 and the welding pipe fitting three 103 into the laser welding assembly fixture, the front end face of the fixed flange B can be abutted against the rear end face of the abutting block 501, and at the same time, the fixed flange B can be abutted against the side blocking end on its left or right side. Through the above operations, the preliminary locking of the front-back and left-right positions of the welding pipe fitting two 102 and the welding pipe fitting three 103 can be realized, and the welding pipe fitting two 102 and the welding pipe fitting three 103 can be quickly and accurately assembled into the preset assembly positions in the fixture with the abutting surface and the side blocking end as the limiting reference surfaces.

[0064] At the same time, since there is also an installation hole B1 at the upper end of the fixed flange B, and this installation hole B1 penetrates through from front to back after the welding pipe fitting two 102 and the welding pipe fitting three 103 are assembled into the laser welding assembly fixture. We have provided a boss 402 at the front end of the flange pressing rod 401 that can be inserted into the installation hole B1.

[0065] Such as Figure 6 As shown, before the shoulder of the boss 402 (i.e., the shoulder 403) presses against the rear end face of the fixed flange B, the boss 402 is first inserted into the installation hole B1 to lock the position of the fixed flange B in the left-right direction in advance, so that it cannot move laterally. Then the shoulder 403 presses against the rear end face of the fixed flange B, so as to more accurately lock the assembly position of the fixed flange B.

[0066] At the same time, in the laser welding assembly fixture in this embodiment, we have also added a detection pin mechanism for detecting the position of the oil passage hole C after the pressing operation. The detection pin mechanism includes a second detection pin mechanism for detecting the position of the oil passage hole on the wall of the welding pipe fitting two 102, a third detection pin mechanism for detecting the position of the oil passage hole on the wall of the welding pipe fitting three 103, a fourth detection pin mechanism for detecting the position of the oil passage hole on the wall of the welding pipe fitting four 104, a fifth detection pin mechanism for detecting the position of the oil passage hole on the wall of the welding pipe fitting five 105, and a sixth detection pin mechanism for detecting the position of the oil passage hole on the wall of the welding pipe fitting six 106.

[0067] Such as Figure 3 、 4 As shown, in this embodiment, the second detection pin mechanism and the third detection pin mechanism are respectively located on the left and right sides of the regions where the first support block 201, the second support block 202, and the third support block 203 are located; and the second detection pin mechanism and the third detection pin mechanism respectively include a movable detection pin and a detection pin pushing cylinder for driving the movable detection pin to move.

[0068] Specifically, the second detection pin mechanism includes a second detection pin 602 and a second detection pin pushing cylinder 902 that drives the second detection pin 602 to move; the third detection pin mechanism includes a third detection pin 603 and a third detection pin pushing cylinder 903 that drives the third detection pin 603 to move; the fourth detection pin mechanism includes a fourth detection pin 604 and a fourth detection pin fixing block 904 that is threadedly connected to the fourth detection pin 604; the fifth detection pin mechanism includes a fourth detection pin 605 and a fifth detection pin fixing block 905 that is threadedly connected to the fifth detection pin 605; the sixth detection pin mechanism includes a sixth detection pin 606 and a sixth detection pin fixing block 906 that is threadedly connected to the sixth detection pin 606.

[0069] The fourth detection pin 604, the fifth detection pin 605, and the sixth detection pin 606 are all detection pins with threads, that is, threaded detection pins. The second detection pin 602 and the third detection pin 603 are both movable detection pins connected to the detection pin pushing cylinder.

[0070] By using the structure that combines the threaded detection pin with the detection pin fixing block to form the detection pin mechanism, since the threaded detection pin and the detection pin fixing block are threadedly connected, the movement range of the threaded detection pin can be better controlled. At the same time, as Figure 3 , 4 shown, what is connected to the threaded detection pin is the detection pin fixing block rather than the cylinder, which can effectively control the overall size of the detection pin mechanism. It is arranged between each support block. For example, in this embodiment, the fourth detection pin mechanism is located between the first support block 201 and the second support block 202; the fifth detection pin mechanism is located between the second support block 202 and the third support block 203. The size of the detection pin mechanism is relatively easy to control, and the installation position of the detection pin mechanism can be arranged more flexibly, and the occlusion of the welding points can be reduced more effectively.

[0071] During the operation, after each welded pipe fitting is clamped by the clamping mechanism in the support and limit block assembly, the operator can start the detection pin mechanism to detect the position of the oil passage holes C at the upper ends of the intermediate elbow A1, the left straight pipe A2, the right straight pipe A3, the lower straight pipe A4, the upper straight pipe A5, and the horizontal branch pipe A6. When the second detection pin 602, the third detection pin 603, the fourth detection pin 604, the fifth detection pin 605, and the sixth detection pin 606 are simultaneously inserted into the corresponding oil passage holes C at the upper ends of the left straight pipe A2, the right straight pipe A3, the lower straight pipe A4, the upper straight pipe A5, and the horizontal branch pipe A6 respectively, it indicates that the above oil passage holes C are basically in the preset positions, and each welded pipe fitting is in the preset assembly position.

[0072] Preferably, the front ends of the second detection pin 602, the third detection pin 603, the fourth detection pin 604, the fifth detection pin 605, and the sixth detection pin 606 can also be set to a conical shape. The front part of the conical front end can be inserted into the oil passage hole C, and the rear part of the conical front end can be used to press against the edge of the oil passage hole C to apply a certain pressing force to the welded pipe fitting. After the conical front end is inserted into the oil passage hole C, the operator can more intuitively observe the matching degree between the oil passage hole C and the conical front end after insertion, so as to judge whether the orientation of the oil passage hole C is accurately located at the preset position. At the same time, the conical front end can also effectively control the insertion depth of the detection pin into the oil passage hole C.

[0073] At the same time, a laser welding relief hole 502 that penetrates up and down is also provided at the upper end of the bottom plate 100. During the welding operation, the welding laser passes through the laser welding relief hole 502.

[0074] After the welded pipe fitting one 101, the welded pipe fitting two 102, the welded pipe fitting three 103, the welded pipe fitting four 104, the welded pipe fitting five 105, and the welded pipe fitting six 106 are clamped in the preset assembly position in the laser welding assembly fixture, the above-mentioned welded pipe fittings can be welded together using a laser welding device to form a Figure 1 finished cooling oil pipe as described.

Claims

1. A laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle, characterized in that: It includes a bottom plate (100), and a support and limit block assembly, a first pressing mechanism, a second pressing mechanism, a third pressing mechanism, a fourth pressing mechanism and a fifth pressing mechanism are provided at the upper end of the bottom plate (100); The support and limit block assembly includes a first support block (201), a second support block (202) and a third support block (203) which are sequentially and spaced apart from front to back; the support and limit block assembly further includes a left support block (206) and a right support block (207) located between the first support block (201) and the second support block (202), and a fifth support block (205) located on the left or right side of the area where the first support block (201), the second support block (202) and the third support block (203) are located; A first elbow pipe limiting groove (701) and a second elbow pipe limiting groove (702) which penetrate through from left to right are respectively provided at the upper ends of the left support block (206) and the right support block (207) for placing a first welded pipe fitting (101); A first limiting groove (801), a second limiting groove (802) and a third limiting groove (803) which penetrate through from front to back are sequentially provided at the upper end of the first support block (201) from left to right; a fourth limiting groove (804) and a fifth limiting groove (805) which penetrate through from front to back are sequentially provided at the upper end of the second support block (202) from left to right; a sixth limiting groove (806), a seventh limiting groove (807) and an eighth limiting groove (808) which penetrate through from front to back are sequentially provided at the upper end of the third support block (203) from left to right; a ninth limiting groove (809) which penetrates through from left to right for placing a sixth welded pipe fitting (106) is provided at the upper end of the fifth support block (205); The first limiting groove (801), the fourth limiting groove (804) and the sixth limiting groove (806) are aligned in sequence from front to back for placing a second welded pipe fitting (102); the third limiting groove (803), the fifth limiting groove (805) and the eighth limiting groove (808) are aligned in sequence from front to back for placing a third welded pipe fitting (103); the second limiting groove (802) and the seventh limiting groove (807) are respectively used for placing a fourth welded pipe fitting (104) and a fifth welded pipe fitting (105); The first pressing mechanism is used to push the welding surface of the second welded pipe fitting (102) to abut against the left welding end face of the first welded pipe fitting (101); the second pressing mechanism is used to push the welding surface of the third welded pipe fitting (103) to abut against the right welding end face of the first welded pipe fitting (101); the third pressing mechanism is used to push the welding end face of the fourth welded pipe fitting (104) to abut against the front side welding surface of the first welded pipe fitting (101); the fourth pressing mechanism is used to push the welding end face of the fifth welded pipe fitting (105) to abut against the rear side welding surface of the first welded pipe fitting (101); the fifth pressing mechanism is used to push the left welding end face of the sixth welded pipe fitting (106) to abut against the right side welding surface of the third welded pipe fitting (103); A butt block (501) for the fixed flange to abut against is further provided at the rear side of the second support block (202); a side stop end is further provided on the left or right side of the butt block (501); a flange pressing mechanism for pressing the fixed flange tightly against the butt block (501) from the rear to the front is further provided at the upper end of the bottom plate (100).

2. The laser welding assembly jig for the motor cooling oil pipe of a new energy vehicle according to claim 1, characterized in that: The first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism and the fifth clamping mechanism respectively include a clamping rod and a clamping cylinder for driving the clamping rod to move; Or the first clamping mechanism, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism respectively include a clamping rod and a clamping cylinder for driving the clamping rod to move; the fifth clamping mechanism includes a threaded clamping rod and a clamping rod fixing block threadedly connected to the threaded clamping rod.

3. The laser welding assembly jig for the motor cooling oil pipe of a new energy vehicle according to claim 2, wherein: The flange pressing mechanism includes a flange pressing rod (401) and a flange pressing cylinder for driving the flange pressing rod (401) to move back and forth.

4. The laser welding assembly fixture for the motor cooling oil pipe of a new energy vehicle according to claim 3, wherein: A boss capable of being inserted into the mounting hole on the fixed flange is provided at the front end of the flange pressing rod (401).

5. A laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle according to any one of claims 1-4, characterized in that: It further includes a second detection pin mechanism for detecting the position of the oil through hole on the pipe wall of the welding pipe fitting two (102), a third detection pin mechanism for detecting the position of the oil through hole on the pipe wall of the welding pipe fitting three (103), a fourth detection pin mechanism for detecting the position of the oil through hole on the pipe wall of the welding pipe fitting four (104), a fifth detection pin mechanism for detecting the position of the oil through hole on the pipe wall of the welding pipe fitting five (105), and a sixth detection pin mechanism for detecting the position of the oil through hole on the pipe wall of the welding pipe fitting six (106).

6. The laser welding assembly fixture for the motor cooling oil pipe of a new energy vehicle according to claim 5, characterized in that: The second detection pin mechanism and the third detection pin mechanism are respectively located on the left and right sides of the area where the first support block (201), the second support block (202) and the third support block (203) are located; and the second detection pin mechanism and the third detection pin mechanism respectively include a movable detection pin and a detection pin pushing cylinder for driving the movable detection pin to move; The fourth detection pin mechanism is located between the first support block (201) and the second support block (202); the fifth detection pin mechanism is located between the second support block (202) and the third support block (203); the sixth detection pin mechanism is located at the front or rear side of the fifth support block (205); and the fourth detection pin mechanism, the fifth detection pin mechanism and the sixth detection pin mechanism respectively include a threaded detection pin and a detection pin fixing block threadedly connected to the threaded detection pin.

7. The laser welding assembly fixture for the motor cooling oil pipe of a new energy vehicle according to claim 6, characterized in that: The front ends of the movable detection pin and the threaded detection pin are both conical.

8. A laser welding assembly fixture for a motor cooling oil pipe of a new energy vehicle according to claim 7, characterized in that: A laser welding relief hole (502) penetrating up and down is further provided on the bottom plate.

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