Positioning and clamping device for copper-aluminum brazing

Abstract

This invention relates to the field of copper-aluminum brazing positioning technology, and discloses a positioning and clamping device for copper-aluminum brazing, comprising: a base frame and a support tube. Support plates are fixedly connected to the outer wall of the support tube. There are eight support plates, arranged in groups of four. A first guide cylinder, a second guide cylinder, and a third guide cylinder are fixedly sleeved on the outer wall of each group of support plates. Each group of support plates has two first guide cylinders on its outer wall. Guide openings are provided between the second guide cylinder and the first guide cylinder, and between the third guide cylinder and the first guide cylinder. This positioning and clamping device for copper-aluminum brazing allows an assistant to simultaneously fix and adjust the workpiece inside the positioning mechanism while the welder is welding, ensuring that the welding time and the fixing and adjustment time coincide. This reduces the number of steps for the welder, is suitable for assembly line operations, and improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of copper-aluminum brazing positioning technology, specifically a positioning clamping device for copper-aluminum brazing. Background Technology

[0002] Brazing is a welding method in which both the filler metal and the workpiece are heated to their melting temperatures simultaneously, and the liquid filler metal fills the gaps between the solid workpieces to join the metals. Before brazing, the oxide film and oil on the contact surfaces of the base metals must be removed to allow the capillary action of the filler metal to function properly after it melts, increasing its wettability and capillary flowability. Depending on the melting point of the filler metal, brazing is further divided into hard brazing and soft brazing.

[0003] When brazing copper and aluminum, a positioning device is required for clamping. However, conventional positioning devices require the welder to fix and adjust the workpiece inside the positioning device before welding, which is not suitable for assembly line operations and is relatively inefficient when welding a large number of workpieces. Therefore, a positioning and clamping device for copper and aluminum brazing is needed. This device allows an assistant to fix and adjust the workpiece inside the positioning device while the welder is welding, so that the welding time and the fixing and adjustment time coincide, reducing the number of steps for the welder and making it suitable for assembly line operations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a positioning and clamping device for copper-aluminum brazing, which solves the problems mentioned in the background.

[0005] This invention provides the following technical solution: a positioning and clamping device for copper-aluminum brazing, comprising: a base frame and a support tube, wherein a support plate is fixedly connected to the outer wall of the support tube, the number of support plates is eight, and four support plates form a group, and a first guide cylinder, a second guide cylinder, and a third guide cylinder are fixedly sleeved on the outer wall of each group of support plates, and the number of first guide cylinders on the outer wall of each group of support plates is two, and guide openings are provided between the second guide cylinder and the first guide cylinder and between the third guide cylinder and the first guide cylinder, and first support rollers are rotatably connected to the inside of each support plate. The first and second support rollers are movably sleeved with a transmission belt on their outer walls. A guide strip is fixedly connected to the outer wall of the transmission belt. A slider is slidably connected to the outer wall of the guide strip. An extension column is integrally connected to the side of the slider away from the guide strip. A stepper motor is fixedly installed on one side of the base frame. The output end of the stepper motor is fixedly connected to a drive shaft through a coupling. One end of the drive shaft passes through one side of the base frame and extends to the other side of the base frame. The outer wall of the drive shaft is rotatably connected to the inner wall of the base frame. A positioning groove is fixedly connected to the outer wall of the extension column.

[0006] Preferably, a switch frame is slidably connected to the outer wall of the positioning groove, and a guide hole is provided through the surface of the switch frame. The guide hole includes an oblique hole and a straight hole, and the oblique hole and the straight hole are connected. The guide hole is located on the side of the positioning groove away from the outer extension post, and a positioning mechanism is provided inside the positioning groove.

[0007] Preferably, the positioning mechanism includes a mounting column, a pressing connecting rod, a pressing wheel, and a spring. The mounting column is integrally connected to the inner wall of the positioning groove. The pressing connecting rod is rotatably connected to the outer wall of the mounting column via a bearing, and one side of the pressing connecting rod is slidably connected to the inner wall of the switch frame. The pressing wheel is rotatably connected to the end of the pressing connecting rod away from the mounting column. The spring is fixedly connected to the inner wall of the positioning groove, and the spring is located between the pressing connecting rod and the positioning groove. The positioning mechanism is internally provided with a one-way limiting mechanism.

[0008] Preferably, the one-way limiting mechanism includes a compression lever, a rubber block, and a rubber sleeve. The compression lever is rotatably connected to the inner wall of the compression connecting rod. The rubber block is fixedly connected to one end of the compression lever. The rubber sleeve is fixedly sleeved on the outer wall of the compression wheel. The surface of the compression lever is tangent to the surface of the compression wheel. The surface of the rubber block is slidably connected to the surface of the rubber sleeve. The surface of the spring is movably connected to one side of the compression lever. The side of the compression lever away from the spring is movably connected to one side of the compression connecting rod.

[0009] Preferably, the side of the extrusion link away from the positioning groove is integrally connected with a pin, and the outer wall of the pin is slidably connected to the inner wall of the guide hole.

[0010] Preferably, the inner wall of the base frame is integrally connected with a fixing cylinder, and the outer wall of the fixing cylinder is fixedly connected to the inner wall of the support tube.

[0011] Preferably, a stop plate is integrally provided on the side of the third guide cylinder away from the second guide cylinder, and the stop plate is perpendicular to the third guide cylinder.

[0012] Preferably, the first support roller has through holes at both ends, and the inner wall of the through holes is fixedly connected to the outer wall of the drive shaft.

[0013] Preferably, there are multiple extrusion links, with each pair of extrusion links forming a group, and each group of extrusion links being relatively distributed.

[0014] Preferably, the guide port has a groove inside, and the inner wall of the guide port is slidably connected to the outer wall of the extension post.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This positioning and clamping device for copper-aluminum brazing, through its base frame, support tube, support plate, first guide cylinder, second guide cylinder, third guide cylinder, guide opening, first support roller, second support roller, transmission belt, guide strip, slider, extension column, stepper motor, transmission shaft, and positioning groove, enables the auxiliary personnel to simultaneously fix and adjust the workpiece to be welded within the positioning mechanism while the welder is welding, thus coinciding the welding time and the fixing and adjustment time. This reduces the number of operation steps for the welder, is suitable for assembly line operations, and improves work efficiency.

[0017] 2. This positioning and clamping device for copper-aluminum brazing, through the installation column, extrusion connecting rod, extrusion wheel and spring, can use the extrusion of the spring to push the extrusion connecting rod of the same group to move closer to the center, so as to ensure the clamping and positioning of the workpiece to be welded.

[0018] 3. The positioning and clamping device for copper-aluminum brazing, through the setting of spring, extrusion lever, rubber block and rubber sleeve, can use the spring to extrusion lever to extrusion and the friction between the rubber block and rubber sleeve to limit the extrusion wheel in one direction, ensuring that the workpiece to be welded can only move in one direction towards the center, ensuring the positioning of the workpiece to be welded while facilitating the adjustment and adjustment of the position of the workpiece to be welded in advance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a main sectional view of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a side sectional view of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure at the guide port position of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal exploded structure of the third guide tube of the present invention;

[0025] Figure 7 This is a schematic diagram of the positioning groove structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the positioning groove of the present invention;

[0027] Figure 9 This is a schematic diagram of the positioning mechanism structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the internal exploded structure of the positioning mechanism of the present invention.

[0029] In the diagram: 1. Base frame; 2. Support tube; 3. Support plate; 4. First guide cylinder; 5. Second guide cylinder; 6. Third guide cylinder; 7. Guide opening; 8. First support roller; 9. Second support roller; 10. Transmission belt; 11. Guide strip; 12. Slider; 13. Extension column; 14. Stepper motor; 15. Transmission shaft; 16. Positioning groove; 17. Switch frame; 18. Guide hole; 19. Pin; 2001. Mounting column; 2002. Extrusion connecting rod; 2003. Extrusion wheel; 2004. Spring; 2101. Extrusion lever; 2102. Rubber block; 2103. Rubber sleeve; 22. Fixing cylinder; 23. Stop plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-10A positioning and clamping device for copper-aluminum brazing includes: a base frame 1 and a support tube 2. Support plates 3 are fixedly connected to the outer wall of the support tube 2. There are eight support plates 3, arranged in groups of four. Each group of support plates 3 has a first guide cylinder 4, a second guide cylinder 5, and a third guide cylinder 6 fixedly sleeved on its outer wall. Each group of support plates 3 has two first guide cylinders 4. Guide openings 7 are provided between the second guide cylinder 5 and the first guide cylinder 4, and between the third guide cylinder 6 and the first guide cylinder 4. The inner wall of the support plate 3... The base frame 1 is rotatably connected to a first support roller 8 and a second support roller 9. A transmission belt 10 is movably sleeved on the outer wall of the first support roller 8 and the second support roller 9. A guide strip 11 is fixedly connected to the outer wall of the transmission belt 10. A slider 12 is slidably connected to the outer wall of the guide strip 11. An extension column 13 is integrally connected to the side of the slider 12 away from the guide strip 11. A stepper motor 14 is fixedly mounted on one side of the base frame 1. The stepper motor 14 is a type of motor that converts electrical pulse signals into corresponding angular or linear displacements. For each input pulse signal, the stepper motor rotates... The stepper motor rotates by an angle or moves forward one step. Its output angular displacement or linear displacement is proportional to the number of input pulses, and its rotational speed is proportional to the pulse frequency. Therefore, the stepper motor is also called a pulse motor. The output end of the stepper motor 14 is fixedly connected to the drive shaft 15 through a coupling. One end of the drive shaft 15 passes through one side of the base frame 1 and extends to the other side of the base frame 1. The outer wall of the drive shaft 15 is rotatably connected to the inner wall of the base frame 1. The outer wall of the extension column 13 is fixedly connected to the positioning groove 16. The base frame 1, support tube 2, and support are used to connect the stepper motor. The support plate 3, first guide cylinder 4, second guide cylinder 5, third guide cylinder 6, guide opening 7, first support roller 8, second support roller 9, transmission belt 10, guide strip 11, slider 12, extension column 13, stepper motor 14, transmission shaft 15, and positioning groove 16 enable the auxiliary personnel to fix and adjust the workpiece to be welded inside the positioning mechanism while the welder is welding. This allows the welding time and the fixing and adjustment time to coincide, reducing the number of operation steps for the welder, making it suitable for assembly line operations and improving work efficiency.

[0032] The outer wall of the positioning groove 16 is slidably connected to a switch frame 17, and a guide hole 18 is provided through the surface of the switch frame 17. The guide hole 18 includes an oblique hole and a straight hole, and the oblique hole and the straight hole are connected. The guide hole 18 is located on the side of the positioning groove 16 away from the outer extension post 13. The positioning groove 16 is provided with a positioning mechanism to facilitate the opening and closing of the extrusion connecting rod 2002 by controlling the sliding switch frame 17, so as to facilitate the removal of the weldment.

[0033] The positioning mechanism includes a mounting post 2001, a pressing connecting rod 2002, a pressing wheel 2003, and a spring 2004. The mounting post 2001 is integrally connected to the inner wall of the positioning groove 16. The pressing connecting rod 2002 is rotatably connected to the outer wall of the mounting post 2001 via a bearing, and one side of the pressing connecting rod 2002 is slidably connected to the inner wall of the switch frame 17. The pressing wheel 2003 is rotatably connected to the end of the pressing connecting rod 2002 away from the mounting post 2001. The spring 2004 is fixedly connected to the inner wall of the positioning groove 16, and the spring 2004 is located between the pressing connecting rod 2002 and the positioning groove 16. The positioning mechanism is equipped with a one-way limiting mechanism. Through the mounting post 2001, the pressing connecting rod 2002, the pressing wheel 2003, and the spring 2004, the pressing of the spring 2004 can push the pressing connecting rod 2002 in the same group to move closer to the center, ensuring the clamping and positioning of the workpiece to be welded.

[0034] The one-way limiting mechanism includes a compression lever 2101, a rubber block 2102, and a rubber sleeve 2103. The compression lever 2101 is rotatably connected to the inner wall of the compression connecting rod 2002. The rubber block 2102 is fixedly connected to one end of the compression lever 2101. The rubber sleeve 2103 is fixedly sleeved on the outer wall of the compression wheel 2003. The surface of the compression lever 2101 is tangent to the surface of the compression wheel 2003. The surface of the rubber block 2102 is slidably connected to the surface of the rubber sleeve 2103. The surface of the spring 2004 is movably connected to one side of the compression lever 2101. The side of the compression lever 2101 away from the spring 2004 is movably connected to the side of the compression connecting rod 2002. Through the spring 2004, compression lever 2101, rubber block 2102 and rubber sleeve 2103, the spring 2004 can compress the compression lever 2101, and the friction between the rubber block 2102 and the rubber sleeve 2103 can limit the compression wheel 2003 in one direction, ensuring that the workpiece to be welded can only move in one direction towards the middle. This ensures that the workpiece to be welded is positioned and that its position can be adjusted when it is fixed in advance.

[0035] The pressing rod 2002 is integrally connected to a pin 19 on the side away from the positioning groove 16, and the outer wall of the pin 19 is slidably connected to the inner wall of the guide hole 18 so as to push the pressing rod 2002 to rotate.

[0036] The inner wall of the base frame 1 is integrally connected with a fixing cylinder 22, and the outer wall of the fixing cylinder 22 is fixedly connected to the inner wall of the support pipe 2, so as to fix the support pipe 2 and fix the device through the support pipe 2 and the base frame 1.

[0037] Among them, the third guide cylinder 6 is integrally provided with a stop plate 23 on the side away from the second guide cylinder 5, and the stop plate 23 is perpendicular to the third guide cylinder 6, so as to facilitate quick positioning with the help of the stop plate 23 when installing the welding parts.

[0038] The first support roller 8 has through holes at both ends, and the inner wall of the through holes is fixedly connected to the outer wall of the drive shaft 15 so as to facilitate transmission through the drive shaft 15 and the first support roller 8.

[0039] The number of extrusion connecting rods 2002 is multiple, and every two extrusion connecting rods 2002 form a group. Each group of extrusion connecting rods 2002 is relatively distributed to facilitate the formation of opposing extrusion to fix the welded parts.

[0040] The guide port 7 has a groove inside, and the inner wall of the guide port 7 is slidably connected to the outer wall of the extension column 13 so that the weldment can slide towards the middle and be connected as the guide port 7 slides.

[0041] Working principle: During use, the assistant installs the aluminum and copper parts into the positioning mechanism on one side of the two stop plates 23 respectively. During installation, the aluminum or copper part is slid into the stop plate 23 from one end of the positioning groove 16, so that the end of the aluminum or copper part is in contact with the stop plate 23. The extrusion connecting rod 2002 is extruded and the spring 2004 is deformed. The extrusion connecting rod 2002 and the extrusion wheel 2003 push and fix the welded part to prevent it from sliding up and down. At the same time, the extrusion lever 2101 is pressed against the rubber sleeve 2 through the rubber block 2102. The 103 joints are tangentially fitted to ensure that the extrusion roller 2003 can roll smoothly when the weldment slides into the positioning groove 16, while creating resistance in the opposite direction when the weldment slides out of the positioning groove 16, preventing the extrusion roller 2003 from sliding in the opposite direction and preventing the weldment from sliding away from the stop plate 23. When the extrusion connecting rod 2002 unfolds, it will push the guide hole 18 through the pin 19, causing the switch frame 17 to slide away from the stop plate 23. Then, the stepper motor 14 is started, and the stepper motor 14 drives the first support roller 8 to rotate through the transmission shaft 15. The first support roller 8 rotates... When in motion, the guide bar 11 moves via the transmission belt 10. The guide bar 11 drives the extension post 13 to slide along the guide opening 7 via the slider 12, causing the positioning mechanism in front of the auxiliary personnel to rotate out. At the same time, the already installed welding parts slide closer to each other along the convex groove inside the guide opening 7 until they reach the end of the position. When the welding ends of the welding parts are tightly attached, the stepper motor 14 stops. The auxiliary personnel continue to install new aluminum and copper parts into the positioning mechanism on one side of the two stop plates 23. The welding personnel weld the parts. After welding, the switch frame 17 is slid away from the stop plate 23. The switch frame 17 pushes the pin 19 through the guide hole 18 to squeeze the squeeze connecting rod 2002 to unfold, thereby taking out the welded parts. Then, the switch frame 17 is slid in the opposite direction to reset the squeeze connecting rod 2002. Then, the start stepper motor 14 is started again. The start stepper motor 14 pushes the new welding parts to the end of the position through the above steps. Then, the welding personnel welding and taking out parts and the auxiliary personnel loading and fixing parts are repeated to realize the assembly line operation.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning and clamping device for copper-aluminum brazing, characterized in that, include: The base frame (1) and the support tube (2) are provided. The outer wall of the support tube (2) is fixedly connected to the support plate (3). There are eight support plates (3), and four support plates (3) are arranged as a group. The outer walls of the two groups of support plates (3) are fixedly fitted with a first guide cylinder (4), a second guide cylinder (5) and a third guide cylinder (6). There are two first guide cylinders (4) on the outer wall of each group of support plates (3). Guide openings (7) are provided between the second guide cylinder (5) and the first guide cylinder (4) and between the third guide cylinder (6) and the first guide cylinder (4). The inside of the support plate (3) is rotatably connected to a first support roller (8) and a second support roller (9). The first support roller (8) and the second support roller (9) are rotatably connected to each other. A transmission belt (10) is movably sleeved on the outer wall of the roller (9). A guide strip (11) is fixedly connected to the outer wall of the transmission belt (10). A slider (12) is slidably connected to the outer wall of the guide strip (11). An extension column (13) is integrally connected to the side of the slider (12) away from the guide strip (11). A stepper motor (14) is fixedly installed on one side of the base frame (1). A transmission shaft (15) is fixedly connected to the output end of the stepper motor (14) through a coupling. One end of the transmission shaft (15) passes through one side of the base frame (1) and extends to the other side of the base frame (1). The outer wall of the transmission shaft (15) is rotatably connected to the inner wall of the base frame (1). A positioning groove (16) is fixedly connected to the outer wall of the extension column (13). The outer wall of the positioning groove (16) is slidably connected to a switch frame (17), and a guide hole (18) is provided through the surface of the switch frame (17). The guide hole (18) includes an oblique hole and a straight hole, and the oblique hole and the straight hole are connected. The guide hole (18) is located on the side of the positioning groove (16) away from the outer extension post (13), and a positioning mechanism is provided inside the positioning groove (16). The positioning mechanism includes a mounting post (2001), a pressing rod (2002), a pressing wheel (2003), and a spring (2004). The mounting post (2001) is integrally connected to the inner wall of the positioning groove (16). The pressing rod (2002) is rotatably connected to the outer wall of the mounting post (2001) via a bearing, and one side of the pressing rod (2002) is slidably connected to the inner wall of the switch frame (17). The pressing wheel (2003) is rotatably connected to the end of the pressing rod (2002) away from the mounting post (2001). The spring (2004) is fixedly connected to the inner wall of the positioning groove (16), and the spring (2004) is located between the pressing rod (2002) and the positioning groove (16). The positioning mechanism is equipped with a one-way limiting mechanism.

2. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The one-way limiting mechanism includes a compression lever (2101), a rubber block (2102), and a rubber sleeve (2103). The compression lever (2101) is rotatably connected to the inner wall of the compression connecting rod (2002). The rubber block (2102) is fixedly connected to one end of the compression lever (2101). The rubber sleeve (2103) is fixedly sleeved on the outer wall of the compression wheel (2003). The surface of the compression lever (2101) is tangent to the surface of the compression wheel (2003). The surface of the rubber block (2102) is slidably connected to the surface of the rubber sleeve (2103). The surface of the spring (2004) is movably connected to one side of the compression lever (2101). The side of the compression lever (2101) away from the spring (2004) is movably connected to one side of the compression connecting rod (2002).

3. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The side of the extrusion link (2002) away from the positioning groove (16) is integrally connected with a pin (19), and the outer wall of the pin (19) is slidably connected to the inner wall of the guide hole (18).

4. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The inner wall of the base frame (1) is integrally connected to a fixing cylinder (22), and the outer wall of the fixing cylinder (22) is fixedly connected to the inner wall of the support tube (2).

5. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The third guide cylinder (6) is integrally provided with a stop plate (23) on the side away from the second guide cylinder (5), and the stop plate (23) is perpendicular to the third guide cylinder (6).

6. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The first support roller (8) has through holes at both ends, and the inner wall of the through holes is fixedly connected to the outer wall of the drive shaft (15).

7. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The number of extrusion links (2002) is multiple, and every two extrusion links (2002) form a group, and each group of extrusion links (2002) is relatively distributed.

8. The positioning and clamping device for copper-aluminum brazing according to claim 1, characterized in that, The guide port (7) is provided with a groove inside, and the inner wall of the guide port (7) is slidably connected to the outer wall of the extension column (13).

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