Laser welding positioning device for automobile air conditioner pipeline joint

Abstract

The utility model discloses a kind of automobile air conditioner pipeline joint laser welding positioning device, including rotating platform, XY hand-adjusted sliding table, welding tool base, welding tool body, pipe fitting fixing device and pipe fitting pressing device, the rotating platform is horizontally located in the bottom end, XY hand-adjusted sliding table is installed on rotating platform, welding tool base is installed on XY hand-adjusted sliding table, the welding tool body can be detachably installed on welding tool base, and the positioning mechanism for positioning pressing plate and aluminium pipe is equipped in welding tool body upper end, the pipe fitting fixing device is equipped in the upper side of welding tool body, for fixed support to aluminium pipe, the pipe fitting pressing device includes pressing part and rotating part, and pressing part is used to press tight aluminium pipe upper end, and rotating part is cooperated with rotating platform to realize pressing tight after rotating operation.The utility model is convenient to install, and adjustment is quick, improve product change type efficiency, so that the laser welding technology is fully adapted to the rhythm of fast replacement of domestic new energy automobile.

Description

Technical Field

[0001] This utility model relates to a laser welding positioning device for automotive air conditioning pipe joints, belonging to the field of automotive air conditioning pipe production technology. Background Technology

[0002] Automotive air conditioning pipes are an indispensable key component of vehicle air conditioning. Especially with the popularization of new energy vehicles, not only have the requirements for air conditioning refrigeration systems been raised, but heat pump air conditioning systems and refrigerator refrigeration systems have also been introduced to improve the comfort of passengers. As a result, the amount of air conditioning pipes used in a car has increased several times compared to before.

[0003] Flame brazing is a commonly used welding method for air conditioning pipes. This method significantly increases the demand for equipment, gas, and human resources. However, as people's living standards improve, their requirements for working environment and workload also increase. Currently and in the future, it is difficult to train and recruit skilled workers, which necessitates that companies improve their production processes and provide better working environments and lower workloads. Simultaneously, with the increasing maturity and widespread adoption of laser welding technology in the automotive and other fields, the welding technology for automotive air conditioning pipes has reached a critical juncture for upgrading and transformation.

[0004] However, there are many specifications and models of air conditioning pipe connectors, and the existing equipment tooling positioning devices are difficult to install and debug, resulting in low equipment utilization. It is necessary to upgrade and modify the existing positioning devices to improve the tooling positioning accuracy and reduce installation and debugging time. Utility Model Content

[0005] The purpose of this invention is to provide a laser welding positioning device for automotive air conditioning pipe joints, which enables quick mold changes and has error prevention and positioning functions, thereby assisting in the laser welding of aluminum pipes and pressure plates.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a laser welding positioning device for automotive air conditioning pipe joints, comprising a rotating platform, an XY manually adjustable slide, a welding fixture base, a welding fixture body, a pipe fixing device, and a pipe clamping device. The rotating platform is horizontally positioned at the bottom, the XY manually adjustable slide is mounted on the upper end of the rotating platform, the welding fixture base is mounted on the upper end of the XY manually adjustable slide, the welding fixture body is detachably mounted on the welding fixture base, and the upper end of the welding fixture body is provided with a positioning mechanism for positioning the pressure plate and the aluminum pipe. The pipe fixing device is located on one side above the welding fixture body and is used to fix and support the side end of the aluminum pipe. The pipe clamping device is located at the top and includes a clamping part and a rotating part. The clamping part is used to clamp the upper end of the aluminum pipe, and the rotating part cooperates with the rotating platform to realize the rotation operation after clamping.

[0007] Furthermore, the upper center of the welding fixture base is provided with a positioning center hole, and the lower center of the welding fixture body is provided with a positioning center shaft. The positioning center shaft is inserted into the positioning center hole to position the welding fixture body.

[0008] Furthermore, the positioning mechanism includes a fixed hole in the center and a positioning pin on one side of the fixed hole. The fixed hole engages with a boss at the lower end of the pressure plate, and the positioning pin engages with a pin hole on the pressure plate. When the pressure plate is installed, the lower boss is inserted into the fixed hole, and the pin hole is fitted with the positioning pin.

[0009] Furthermore, the side end of the welding fixture body is equipped with an anti-mistake block, which cooperates with the anti-mistake plane at the front end of the pressure plate to prevent the placement of a pressure plate of the wrong specification.

[0010] Furthermore, the pipe fixing device includes a metal mounting part and a non-metal fixing part. The metal mounting part is fixed on the horizontal telescopic cylinder, and the non-metal fixing part is detachably installed inside the metal mounting part. An arc-shaped groove that fits the aluminum pipe wall is provided on the side end face of the non-metal fixing part.

[0011] Furthermore, the metal mounting part is made of stainless steel, and the connecting holes on the metal mounting part are oblong holes in the left-right direction to facilitate adjustment in the left-right direction; the non-metallic fixing part is made of POM material, and the connecting holes on the non-metallic fixing part are oblong holes in the front-back direction to facilitate adjustment in the front-back direction.

[0012] Furthermore, the front end of the clamping part of the pipe clamping device is tapered to facilitate insertion into the upper end of the aluminum pipe.

[0013] Furthermore, the pipe clamping device is mounted on the vertical telescopic cylinder via a positioning bracket.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) It can achieve rapid mold change and high positioning accuracy: the coaxiality of the product and equipment rotation center before welding meets the requirements of laser welding process. After this device is used, the coaxiality basically does not need to be adjusted. Even if it exceeds 0.1mm, the adjustment time using the X / Y manual adjustment slide will not exceed 2 minutes. The overall mold change time has been reduced from the original 30 minutes to the current 5 minutes.

[0016] (2) It has error prevention function: It overcomes the problem that the joint welding process in the factory is that flame brazing and laser welding coexist, but the flame brazing pressure plate and the laser welding pressure plate cannot be used and coexist. The error prevention plane of the laser welding pressure plate is designed to cooperate with the error prevention block to prevent the insertion of other specifications of pressure plates, thereby achieving the error prevention effect.

[0017] (3) The design of the bottom rotating platform and the upper rotating part enables the fixed aluminum tube and pressure plate to rotate, thereby improving welding efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the laser welding positioning device of this utility model;

[0019] Figure 2 This is a schematic diagram of the product structure after the pressure plate and aluminum tube of this utility model are welded.

[0020] The markings in the diagram are as follows: 1-Rotating platform, 2-XY manual adjustment slide, 3-Welding fixture base, 031-Positioning center hole, 4-Anti-misalignment block, 5-Welding fixture body, 051-Fixed hole, 052-Positioning pin, 053-Positioning center shaft, 6-Pipe fitting fixing device, 061-Metal mounting part, 062-Non-metal fixing part, 063-Left-right oblong hole, 064-Front-back oblong hole, 7-Pipe fitting clamping device, 071-Clamping part, 072-Rotating part, 073-Positioning bracket, 8-Pressure plate, 9-Aluminum tube, 10-Weld seam, 11-Anti-misalignment plane. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and 2 As shown, a laser welding positioning device for automotive air conditioning pipe joints includes a rotating platform 1, an XY manual adjustment slide 2, a welding fixture base 3, a welding fixture body 5, a pipe fixing device 6, and a pipe clamping device 7. The rotating platform 1 is horizontally positioned at the bottom, the XY manual adjustment slide 2 is mounted on the upper end of the rotating platform 1, the welding fixture base 3 is mounted on the upper end of the XY manual adjustment slide 2, the welding fixture body 5 is detachably mounted on the welding fixture base 3, and the upper end of the welding fixture body 5 is provided with a positioning mechanism for positioning the pressure plate 8 and the aluminum pipe 9. The pipe fixing device 6 is located on one side above the welding fixture body 5 and is used to fix and support the aluminum pipe 9. The pipe clamping device 7 is located at the top and includes a clamping part 071 and a rotating part 072. The clamping part 071 is used to clamp the upper end of the aluminum pipe 9, and the rotating part 072 cooperates with the rotating platform 1 to realize the rotation operation after clamping.

[0023] In this embodiment, the upper center of the welding fixture base 3 is provided with a positioning center hole 031 with a diameter of 10 (+0.02, 0) mm and a depth of 15 mm, and the lower center of the welding fixture body 5 is provided with a positioning center shaft 053 with a diameter of 10 (-0.01, -0.03) mm and a height of 10 mm. The positioning center shaft 053 is inserted into the positioning center hole 031 to position the welding fixture body. The design gap is 0.05 mm to ensure convenient assembly. The shaft hole fit ensures that the coaxiality is controlled within 0.05 mm.

[0024] In this embodiment, the positioning mechanism of the welding fixture body 5 includes a centrally located fixed hole 051 and a positioning pin 052 located on one side of the fixed hole. The fixed hole 051 engages with a boss at the lower end of the pressure plate 8, and the positioning pin 052 engages with a pin hole on the pressure plate. When the pressure plate 8 is installed, the lower boss is inserted into the fixed hole 051, and the pin hole is fitted with the positioning pin 052. An anti-error stop 4 is also installed on the side of the welding fixture body 5. The anti-error stop 4 engages with the anti-error plane 11 at the front end of the pressure plate 8 to prevent the placement of a pressure plate 8 of the wrong size.

[0025] In this embodiment, the pipe fixing device 6 includes a metal mounting part 061 and a non-metal fixing part 062. The metal mounting part 061 is fixed to a horizontal telescopic cylinder, and the non-metal fixing part 062 is detachably installed inside the metal mounting part 061. An arc-shaped groove that fits the aluminum pipe wall is provided on the side end face of the non-metal fixing part 062. The metal mounting part 061 is made of stainless steel, and the connecting hole on the metal mounting part 061 is a left-right oriented oblong hole 063 to facilitate adjustment in the left-right direction. The non-metal fixing part 062 is made of POM material, and the connecting hole on the non-metal fixing part 062 is a front-back oriented oblong hole 064 to facilitate adjustment in the front-back direction.

[0026] In this embodiment, the front end of the clamping part 071 of the pipe clamping device 7 is tapered to facilitate insertion into the upper end of the aluminum pipe. Furthermore, the pipe clamping device is mounted on the vertical telescopic cylinder via a positioning bracket 093.

[0027] The tooling assembly method of this utility model:

[0028] The rotating platform 1 is integrated with the equipment; the XY manual adjustment slide 2 is fixed to the rotating platform 1 with positioning pins and locked with bolts; the welding fixture base 3 is fixed to the XY manual adjustment slide 2 with positioning pins and locked with bolts; the anti-misalignment block 4 is fixed to the welding fixture body 5; the metal part of the pipe fitting fixing device 6 is installed on the equipment cylinder; the pipe fitting clamping device is installed on the equipment clamping cylinder by the positioning bracket.

[0029] Before welding, the centering is adjusted. Then, the lower end of the laser welding pressure plate 8 is placed into the fixed hole 051, and the pin hole is fitted onto the positioning pin 052. Then, the aluminum tube 9 is placed into the upper hole of the pressure plate 8. Next, the cylinder drives the tube fixing device 6 to move forward to support and fix the aluminum tube 9, and the tube clamping device 7 moves downward to clamp the aluminum tube 9. Finally, the laser welding operation begins.

[0030] The mold changing steps are as follows:

[0031] For joints of different pipe diameters, remove the metal mounting parts of the welding fixture body 5 and the pipe fitting positioning device 6 respectively, and replace them with new metal mounting parts of the fixture body 5 and the pipe fitting positioning device 6. For joints of the same pipe diameter, simply remove the welding fixture body 5 and replace it with a new welding fixture body 5. After replacing with a new positioning device, check the coaxiality of the inner hole of the center positioning structure with a dial indicator. If it is within 0.1mm, production can proceed directly. Otherwise, adjust the XY manual adjustment slide 2 until it reaches within 0.1mm.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.

Claims

1. A laser welding positioning device for automotive air conditioning pipe joints, characterized in that, The device includes a rotating platform, an XY manually adjustable slide, a welding fixture base, a welding fixture body, a pipe fixing device, and a pipe clamping device. The rotating platform is horizontally positioned at the bottom, the XY manually adjustable slide is mounted on the top of the rotating platform, the welding fixture base is mounted on the top of the XY manually adjustable slide, and the welding fixture body is detachably mounted on the welding fixture base. The upper end of the welding fixture body is provided with a positioning mechanism for positioning the pressure plate and the aluminum pipe. The pipe fixing device is located on one side above the welding fixture body and is used to fix and support the aluminum pipe. The pipe clamping device is located at the top and includes a clamping part and a rotating part. The clamping part is used to clamp the upper end of the aluminum pipe, and the rotating part cooperates with the rotating platform to realize the rotation operation after clamping.

2. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The upper center of the welding fixture base is provided with a positioning center hole, and the lower center of the welding fixture body is provided with a positioning center shaft. The positioning center shaft is inserted into the positioning center hole to position the welding fixture body.

3. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The positioning mechanism includes a fixed hole in the center and a positioning pin on one side of the fixed hole. The fixed hole engages with the boss at the lower end of the pressure plate, and the positioning pin engages with the pin hole on the pressure plate. When the pressure plate is installed, the boss at the lower end is inserted into the fixed hole, and the pin hole is fitted into the positioning pin.

4. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The side end of the welding fixture body is equipped with an anti-mistake block, which cooperates with the anti-mistake plane at the front end of the pressure plate to prevent the placement of a pressure plate of the wrong specification.

5. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The pipe fixing device includes a metal mounting part and a non-metal fixing part. The metal mounting part is fixed on a horizontal telescopic cylinder, and the non-metal fixing part is detachably installed inside the metal mounting part. An arc-shaped groove that fits the aluminum pipe wall is provided on the side end face of the non-metal fixing part.

6. The laser welding positioning device for automotive air conditioning pipe joints according to claim 5, characterized in that, The metal mounting part is made of stainless steel, and the connecting holes on the metal mounting part are oblong holes in the left and right direction to facilitate adjustment in the left and right direction; the non-metallic fixing part is made of POM material, and the connecting holes on the non-metallic fixing part are oblong holes in the front and back direction to facilitate adjustment in the front and back direction.

7. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The front end of the clamping part of the pipe clamping device is tapered to facilitate insertion into the upper end of the aluminum pipe.

8. The laser welding positioning device for automotive air conditioning pipe joints according to claim 1, characterized in that, The pipe clamping device is mounted on the vertical telescopic cylinder via a positioning bracket.

Images