Automatic brazing filler metal pre-coating device for laser brazing

Abstract

The utility model discloses an automatic brazing filler metal pre-coating device for laser brazing. The automatic brazing filler metal pre-coating device comprises a workbench, a first X-axis lead screw sliding table, an electric telescopic rod, a Y-axis lead screw sliding table, a pasty brazing filler metal extrusion device and a brazing filler metal trowelling device. Brazing filler metal trowelling devices are symmetrically arranged on the left side and the right side of the workbench, first X-axis lead screw sliding tables are arranged on the front side and the rear side of the workbench correspondingly, the electric telescopic rods are fixedly installed on the tops of first X-axis lead screw sliding table moving pieces through installation bases, and a Y-axis lead screw sliding table is arranged on the tops of the electric telescopic rods on the two sides; the pasty brazing filler metal extrusion device is fixedly mounted on the Y-axis lead screw sliding table moving part; according to the device, quantitative and fixed-area coating of the paste brazing filler metal on the surface of the base metal can be automatically achieved, inconvenience caused by manual coating is avoided, meanwhile, the quality of follow-up laser welding and the accuracy degree of experiments are guaranteed, and the device is suitable for further application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of laser brazing auxiliary equipment, in particular to an automatic pre-coating device for laser brazing brazing material. Background Art

[0002] Existing laser brazing solder-assisting devices primarily include wire feeders, which control the solder wire feed speed to control weld quality during the laser welding process. However, manual pre-coating is the only method for conducting experiments with paste solder. This process makes it impossible to simultaneously control the solder amount at the paste's wetting point and weld seam area, as well as the contact area between the solder and the welding material. This compromises both laser welding quality and experimental accuracy.

[0003] To this end, the utility model provides an automatic pre-coating auxiliary device for laser brazing paste solder, which can realize pre-coating of solder of a fixed quantity and a fixed contact area at welding seams and wetting points. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an automatic pre-coating device for laser brazing solder.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are:

[0006] An automatic pre-coating device for laser brazing solder, comprising a workbench, a first X-axis lead screw slide, an electric telescopic rod, a Y-axis lead screw slide, a paste solder extruding device and a solder smoothing device;

[0007] The left and right sides of the workbench are symmetrically provided with solder smoothing devices, the front and rear sides of the workbench are respectively provided with a first X-axis screw slide, the electric telescopic rod is fixedly mounted on the top of the first X-axis screw slide moving part through a mounting seat, and a Y-axis screw slide is provided on the top of the electric telescopic rod on both sides, and the paste solder extrusion device is fixedly mounted on the Y-axis screw slide moving part;

[0008] The solder smoothing device includes two groups of stacked second X-axis screw slides, connecting rods, scrapers and wetting molds. The moving parts of the second X-axis screw slides are fixedly connected with connecting rods. The end of the connecting rod on the upper second X-axis screw slide moving part is detachably mounted with a scraper, and the end of the connecting rod on the lower second X-axis screw slide moving part is detachably mounted with a wetting mold. The bottom of the scraper is in contact with the top surface of the wetting mold, and the wetting mold is provided with a plurality of through holes.

[0009] As a possible implementation manner, further, protrusions for shoveling materials are integrally extended from both sides of the bottom end of the scraper.

[0010] As a possible implementation mode, further, the workbench includes a table top, a fixed screw, a pressure plate, a nut and a support foot. The fixed screw is evenly fixed on both sides of the top of the table top along the length direction of the table top. A circular opening is provided on the pressure plate. The pressure plate is sleeved on the fixed screw, and the fixed screw and the circular opening on the pressure plate are clearance-fitted. A nut is provided above each group of pressure plates, and the nut is threadedly connected to the fixed screw; the support foot is detachably connected to the four corners of the bottom of the table top.

[0011] As a possible implementation manner, further, a groove is provided in the middle of the top of the table along the width direction of the table.

[0012] As a possible embodiment, further, the paste solder extrusion device includes a mounting shell, a base plate, a partition, an internal thread moving block, a T-shaped slide rail, a drive motor, a connecting block, a push rod, a solder barrel, a plunger and a longitudinal screw, wherein a partition is installed inside the mounting shell, a base plate is fixedly installed at the bottom of the mounting shell, an opening is opened in the middle of the base plate, a longitudinal screw is rotatably connected between the base plate and the partition, a drive motor is installed on the partition, and an output shaft of the drive motor is connected to the longitudinal screw for driving the longitudinal screw to rotate;

[0013] A T-shaped slide rail is provided on the inner side wall of the mounting shell, and the T-shaped slide rail is parallel to the longitudinal screw. An internal threaded moving block is threadedly connected to the longitudinal screw, and the internal threaded moving block is slidably connected to the T-shaped slide rail. A connecting block is fixedly installed on the side of the internal threaded moving block, and a push rod is fixedly connected to the bottom of the connecting block. The lower end of the push rod passes through the opening in the middle of the bottom plate. The solder barrel is detachably mounted on the bottom of the bottom plate, and the push rod is located in the solder barrel. A plunger is fixedly connected to the bottom of the push rod, and the plunger is tightly fitted with the inner wall of the solder barrel.

[0014] As a possible implementation manner, further, the outer surface of the plunger is covered with a rubber layer.

[0015] As a possible implementation manner, further, an externally threaded collar is fixed to the bottom of the base plate, and the solder tube is threadedly connected to the externally threaded collar.

[0016] As a possible embodiment, further, the first X-axis screw slide, the Y-axis screw slide, and the second X-axis screw slide are all composed of a hollow mounting shell, an upper cover, a motor, a threaded rod, an internal thread block, and a moving part. The upper cover is installed at the opening of the upper end of the hollow mounting shell, and longitudinal bending sections are provided on both sides of the short side of the upper cover. The longitudinal bending sections on the short sides of the upper cover are fixedly connected to the top of the hollow mounting shell, forming a strip opening at the upper ends of the two side walls of the hollow mounting shell.

[0017] A motor is installed inside the hollow mounting shell, and a threaded rod is connected to the output shaft of the motor. The other end of the threaded rod is rotatably connected to the inner wall of the hollow mounting shell. An internal threaded block is threadedly connected to the threaded rod, and a moving part is fixedly connected to the top of the internal threaded block. Both ends of the moving part pass through the strip opening at the upper end of the side wall of the hollow mounting shell, and the ends thereof are bent upward.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] The automatic pre-coating device for laser brazing solder provided by the utility model can automatically realize the quantitative and area-specific coating of paste solder on the surface of the base material, avoiding the inconvenience caused by manual coating, while ensuring the quality of subsequent laser welding and the accuracy of the experiment, and is suitable for further promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a structural diagram of the workbench in the utility model;

[0023] Figure 3 This is a schematic structural diagram of the paste solder extrusion device in the present invention;

[0024] Figure 4 This is a schematic diagram of the cooperation between the T-shaped slide rail and the internal thread moving block in the utility model;

[0025] Figure 5 This is a schematic structural diagram of the solder leveling device in the present invention;

[0026] Figure 6 This is a front view of the solder leveling device in the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the scraper in the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the screw slide in the utility model;

[0029] Figure 9 This is a schematic diagram of the internal structure of the screw slide in the utility model.

[0030] The labels in the figure are as follows:

[0031] Workbench 1; first X-axis lead screw slide 2; electric telescopic rod 3; Y-axis lead screw slide 4; paste solder extruder 5; solder smoothing device 6; hollow mounting housing 7; upper cover 8; motor 9; threaded rod 10; internal thread block 11; moving part 12; mounting seat 13; table 101; groove 1011; fixing screw 102; pressure plate 103; nut 104 ; Support foot-105; Mounting shell-51; Base plate-52; Partition-53; Internal thread moving block-54; T-type slide rail-55; Drive motor-56; Connecting block-57; Push rod-58; Solder barrel-59; Plunger-510; External thread collar-511; Longitudinal screw-512; Second X-axis lead screw slide-61; Connecting rod-62; Scraper-63; Wetting mold-64; Through hole-641. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Refer to the attached Figure 1 As shown, this embodiment provides an automatic pre-coating device for laser brazing solder, comprising a workbench 1, a first X-axis lead screw slide 2, an electric telescopic rod 3, a Y-axis lead screw slide 4, a paste solder extruding device 5 and a solder smoothing device 6;

[0034] The workbench 1 is symmetrically equipped with solder smoothing devices 6 on the left and right sides. A first X-axis screw slide 2 is installed on the front and back sides of the workbench 1. An electric telescopic rod 3 is fixedly mounted on the top of the moving part of the first X-axis screw slide 2 via a mounting seat 13. A Y-axis screw slide 4 is installed on top of the electric telescopic rods 3 on both sides. A solder paste extruder 5 is fixedly mounted on the moving part of the Y-axis screw slide 4. During use, the first X-axis screw slide 2, the electric telescopic rod 3, and the Y-axis screw slide 4 can drive the solder paste extruder 5 to move and raise and lower.

[0035] Refer to the attached Figure 2 As shown, the workbench 1 includes a table top 101, a fixed screw 102, a pressure plate 103, a nut 104 and a support leg 105. The fixed screw 102 is evenly fixed to both sides of the top of the table top 101 along the length direction of the table top 101. A circular opening is opened on the pressure plate 103. The pressure plate 103 is sleeved on the fixed screw 102, and the fixed screw 102 and the circular opening on the pressure plate 103 are clearance-fitted, that is, the pressure plate 103 can slide up and down on the fixed screw 102; a nut 104 is provided above each group of pressure plates 103, and the nut 104 is threadedly connected to the fixed screw 102; the support leg 105 is detachably connected to the four corners of the bottom of the table top 101. Specifically, the detachable connection between the support leg 105 and the table top 101 can be achieved by bolts or buckles. A groove 1011 is opened in the middle of the top of the table top 101 along the width direction of the table top 101.

[0036] During use, place two pieces of parent materials to be welded on the table 101, and adjust the splicing position of the two pieces of parent materials to be in the groove 1011 in the middle of the table 101. The setting of the groove 1011 can prevent the parent materials from sticking to the table 101 when the welding is thorough; then press the pressure plate 103 on the top of the parent material and lock it with the nut 104 to fix the parent material.

[0037] When the base material needs to be moved to the laser welding table for welding, the four supporting legs 105 at the bottom of the workbench 1 are removed, and then the table top 101 and the base material are moved to the laser welding table for laser welding.

[0038] Refer to the attached Figure 5-6As shown, the solder smoothing device 6 includes two sets of stacked second X-axis screw slides 61, connecting rods 62, scrapers 63 and wetting molds 64. The moving parts of the second X-axis screw slides 61 are fixedly connected with connecting rods 62. The end of the connecting rod 62 on the moving part of the upper second X-axis screw slide 61 is detachably mounted with a scraper 63. Specifically, the scraper and the connecting rod 62 are detachably connected by bolts or the like. The end of the connecting rod 62 on the moving part of the lower second X-axis screw slide 61 is detachably mounted with a wetting mold 64. The wetting mold 64 and the connecting rod 62 are detachably connected by buckles or the like. The connection between the scraper 63, the wetting mold 64 and the connecting rod 62 is detachable. The user can replace the scraper 63 and the wetting mold 64 of the corresponding size according to the size of the base material. The bottom of the scraper 63 is in contact with the top surface of the wetting mold 64, and the wetting mold 64 is provided with a plurality of through holes 641.

[0039] During use, the two motherboards to be welded are fixedly mounted on the workbench 1, and the lower second X-axis screw slides 61 on both sides push the wetting molds 64 on both sides toward the joint welds of the two motherboards through the connecting rods 62, and stop after moving to the set position. Specifically, the distance between the two wetting molds 64 is generally controlled at 1-2 mm.

[0040] Next, the solder paste extrusion device 5 is driven to move by the first X-axis screw slide, the electric telescopic rod 3, and the Y-axis screw slide 4 to pre-coat the through-hole 641 of the wetting die 64 and the weld between the two wetting dies 64 with solder paste. After pre-coating, the solder paste extrusion device 5 rises and resets, and then the scrapers 63 on both sides are driven to move back and forth one or more times by the upper second X-axis screw slide 61 to scrape the protruding materials at the weld and through-hole 641. Since the size of the through-hole 641 is fixed and the excess solder paste will be scraped off, the amount of solder paste in each through-hole 641 and the contact area between the solder paste and the base material are consistent. Similarly, after the distance between the two wetting dies 64 is determined, the width of the weld is determined. The solder paste extrusion device 5 pre-coats the weld with solder paste and then scrapes it flat, which can ensure that the amount of solder paste used in various parts of the weld and the contact area between the solder paste and the base material are consistent, thereby achieving a quantitative and fixed area coating of the solder paste on the surface of the base material.

[0041] After the paste solder is dried and solidified, the four supporting legs 105 at the bottom of the workbench 1 are removed, and then the table 101 and the base material are moved downward and taken out, and then moved to the laser welding table for subsequent laser welding.

[0042] Refer to the attached Figure 7 As shown, protrusions for scraping materials are integrally extended on both sides of the bottom end of the scraper 63, which is conducive to scraping off the excess paste solder protruding from the surface of the wet mold 64.

[0043] Refer to the attached Figure 3-4As shown, the paste solder extrusion device 5 includes a mounting shell 51, a bottom plate 52, a partition 53, an internal thread moving block 54, a T-shaped slide rail 55, a drive motor 56, a connecting block 57, a push rod 58, a solder barrel 59, a plunger 510 and a longitudinal screw 512. The partition 53 is installed inside the mounting shell 51, and the bottom plate 52 is fixedly installed at the bottom of the mounting shell 51. The middle part of the bottom plate 52 is opened. The longitudinal screw 512 is rotatably connected between the bottom plate 52 and the partition 53. The drive motor 56 is installed on the partition 53. The output shaft of the drive motor 56 is connected to the longitudinal screw 512 for driving the longitudinal screw 512 to rotate.

[0044] A T-shaped slide rail 55 is provided on the inner side wall of the mounting shell 51. The T-shaped slide rail 55 is parallel to the longitudinal screw 512. An internal threaded moving block 54 is threadedly connected to the longitudinal screw 512, and the internal threaded moving block 54 is slidably connected to the T-shaped slide rail 55, wherein the T-shaped slide rail 55 guides the internal threaded moving block 54. A connecting block 57 is fixedly installed on the side of the internal threaded moving block 54. A push rod 58 is fixedly connected to the bottom of the connecting block 57. The lower end of the push rod 58 passes through the opening in the middle of the bottom plate 52. The solder barrel 59 is detachably mounted on the bottom of the bottom plate 52, and the push rod 58 is located in the solder barrel 59. A plunger 510 is fixedly connected to the bottom of the push rod 58. The outer surface of the plunger 510 is covered with a rubber layer, and the plunger 510 is tightly fitted with the inner wall of the solder barrel 59.

[0045] When in use, first remove the solder tube 59 , then fill the solder tube 59 with paste solder. After filling, insert the plunger 510 into the solder tube 59 and install the solder tube 59 filled with material at the bottom of the base plate 52 .

[0046] When the paste solder needs to be extruded, the driving motor 56 drives the longitudinal screw 512 to rotate. The rotation of the longitudinal screw 512 drives the internal thread moving block 54 to descend along the T-shaped slide rail 55. The internal thread moving block 54 descends and drives the plunger 510 to move downward through the connecting block 57 and the push rod 58. The plunger 510 moves downward and squeezes out the material in the solder tube 59.

[0047] In this embodiment, an externally threaded collar 511 is fixed to the bottom of the base plate 52 , and the solder tube 59 is threadedly connected to the externally threaded collar 511 ; this arrangement facilitates installation and removal of the solder tube 59 .

[0048] Refer to the attached Figure 8-9 As shown, the first X-axis screw slide 2, the Y-axis screw slide 4, and the second X-axis screw slide 61 are all composed of a hollow mounting shell 7, an upper cover 8, a motor 9, a threaded rod 10, an internal thread block 11, and a moving part 12. The upper cover 8 is installed at the opening of the upper end of the hollow mounting shell 7. The upper cover 8 is provided with longitudinal bending sections on both sides of the short side. The longitudinal bending sections on the short side of the upper cover 8 are fixedly connected to the top of the hollow mounting shell 7, forming a strip-shaped opening at the upper end of the two side walls of the hollow mounting shell 7.

[0049] A motor 9 is installed inside the hollow mounting shell 7. A threaded rod 10 is connected to the output shaft of the motor 9. The other end of the threaded rod 10 is rotatably connected to the inner wall of the hollow mounting shell 7. An internal thread block 11 is threadedly connected to the threaded rod 10. The top of the internal thread block 11 is fixedly connected to a moving part 12. Both ends of the moving part 12 pass through the strip opening at the upper end of the side wall of the hollow mounting shell 7, and the ends thereof are bent upward, wherein the distance between the bent portions on both sides of the moving part 12 is slightly larger than the width of the upper cover 8.

[0050] When the moving part 12 on the lead screw slide needs to be driven to move, the motor 9 is started to drive the threaded rod 10 to rotate, and the rotation of the threaded rod 10 drives the internal thread block 11 and the moving part 12 to move.

[0051] In this embodiment, the motor 9 and the drive motor 56 are both stepper motors.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic pre-coating device for laser brazing solder, characterized in that: It comprises a workbench (1), a first X-axis lead screw slide (2), an electric telescopic rod (3), a Y-axis lead screw slide (4), a paste solder extruding device (5) and a solder smoothing device (6); The workbench (1) is symmetrically provided with solder smoothing devices (6) on the left and right sides, and the workbench (1) is provided with a first X-axis screw slide (2) on the front and rear sides respectively. The electric telescopic rod (3) is fixedly mounted on the top of the first X-axis screw slide (2) moving part through a mounting seat (13). A Y-axis screw slide (4) is provided on the top of the electric telescopic rod (3) on both sides, and the paste solder extrusion device (5) is fixedly mounted on the Y-axis screw slide (4) moving part. The solder smoothing device (6) comprises two groups of stacked second X-axis screw slides (61), connecting rods (62), scrapers (63) and wetting molds (64), wherein the movable parts of the second X-axis screw slides (61) are fixedly connected with connecting rods (62), the end of the connecting rod (62) on the movable part of the upper second X-axis screw slide (61) is detachably mounted with a scraper (63), and the end of the connecting rod (62) on the movable part of the lower second X-axis screw slide (61) is detachably mounted with a wetting mold (64), the bottom of the scraper (63) is in contact with the top surface of the wetting mold (64), and the wetting mold (64) is provided with a plurality of through holes (641).

2. The automatic pre-coating device for laser brazing solder according to claim 1, characterized in that: Both sides of the bottom end of the scraper (63) are integrally provided with protrusions for scraping materials.

3. The automatic pre-coating device for laser brazing solder according to claim 1, characterized in that: The workbench (1) comprises a table top (101), a fixing screw (102), a pressure plate (103), a nut (104) and a supporting foot (105). The fixing screw (102) is evenly fixed to both sides of the top of the table top (101) along the length direction of the table top (101). A circular opening is provided on the pressure plate (103). The pressure plate (103) is sleeved on the fixing screw (102), and the fixing screw (102) and the circular opening on the pressure plate (103) are clearance-matched. A nut (104) is provided above each group of pressure plates (103), and the nut (104) is threadedly connected to the fixing screw (102); the supporting foot (105) is detachably connected to the four corners of the bottom of the table top (101).

4. The automatic pre-coating device for laser brazing solder according to claim 3, characterized in that: A groove (1011) is provided at the middle position of the top of the table (101) along the width direction of the table (101).

5. The automatic pre-coating device for laser brazing solder according to claim 1, characterized in that: The paste solder extrusion device (5) comprises a mounting shell (51), a bottom plate (52), a partition (53), an internal thread moving block (54), a T-shaped slide rail (55), a driving motor (56), a connecting block (57), a push rod (58), a solder barrel (59), a plunger (510) and a longitudinal screw (512); the mounting shell (51) is internally mounted with a partition (53); the bottom of the mounting shell (51) is fixedly mounted with a bottom plate (52); an opening is provided in the middle of the bottom plate (52); a longitudinal screw (512) is rotatably connected between the bottom plate (52) and the partition (53); a driving motor (56) is mounted on the partition (53); an output shaft of the driving motor (56) is connected to the longitudinal screw (512) for driving the longitudinal screw (512) to rotate; A T-shaped slide rail (55) is provided on the inner side wall of the mounting shell (51), and the T-shaped slide rail (55) is parallel to the longitudinal screw (512). An internal threaded moving block (54) is threadedly connected to the longitudinal screw (512), and the internal threaded moving block (54) is slidably connected to the T-shaped slide rail (55). A connecting block (57) is fixedly installed on the side of the internal threaded moving block (54), and a push rod (58) is fixedly connected to the bottom of the connecting block (57). The lower end of the push rod (58) passes through the opening in the middle of the bottom plate (52). The solder barrel (59) is detachably installed on the bottom of the bottom plate (52), and the push rod (58) is located in the solder barrel (59). The bottom of the push rod (58) is fixedly connected to a plunger (510), and the plunger (510) is tightly fitted with the inner wall of the solder barrel (59).

6. The automatic pre-coating device for laser brazing solder according to claim 5, characterized in that: The outer surface of the plunger (510) is covered with a rubber layer.

7. The automatic pre-coating device for laser brazing solder according to claim 5, characterized in that: An external threaded collar (511) is fixed to the bottom of the base plate (52), and the solder cylinder (59) is threadedly connected to the external threaded collar (511).

8. The automatic pre-coating device for laser brazing solder according to claim 1, characterized in that: The first X-axis screw slide (2), the Y-axis screw slide (4), and the second X-axis screw slide (61) are all composed of a hollow mounting shell (7), an upper cover (8), a motor (9), a threaded rod (10), an internal thread block (11), and a moving part (12). The upper cover (8) is installed at the opening of the upper end of the hollow mounting shell (7). The upper cover (8) is provided with longitudinal bending sections on both sides of the short side of the upper cover (8). The longitudinal bending sections on the short side of the upper cover (8) are fixedly connected to the top of the hollow mounting shell (7), forming a strip-shaped opening at the upper end of the two side walls of the hollow mounting shell (7); A motor (9) is installed inside the hollow mounting shell (7), a threaded rod (10) is connected to the output shaft of the motor (9), the other end of the threaded rod (10) is rotatably connected to the inner wall of the hollow mounting shell (7), an internal thread block (11) is threadedly connected to the threaded rod (10), a moving part (12) is fixedly connected to the top of the internal thread block (11), and both ends of the moving part (12) pass through the strip opening at the upper end of the side wall of the hollow mounting shell (7), and the end thereof is bent upward.

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