Double-station PCBA (printed circuit board assembly) tin spot laser welding equipment

Abstract

The utility model discloses a double-station PCBA board tin spot laser welding device which comprises a rack, servo drive modules, welding jigs, a tin spot mechanism and a tin soldering mechanism, the rack is provided with the double-station servo drive modules, the two servo drive modules are both provided with the welding jigs, the tin spot mechanism is provided with the tin soldering mechanism, and the tin soldering mechanism is provided with the tin soldering mechanism. A tin dispensing mechanism and a tin soldering mechanism are mounted on the rack on the rear side of the double-station servo driving module; the welding jig comprises a base, a jig plate, a positioning pin, a cover plate and a pressing block. By means of the mode, the double-station tin spot welding machine is high in double-station tin spot welding efficiency, continuous feeding, non-stop and rapid feeding can be achieved, pseudo soldering is avoided, and the welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a double-station PCBA board spot tin laser welding device. Background Art

[0002] The PCBA board of the touch panel involves multiple welding points, such as Figure 1 As shown, it is necessary to place components on the PCBA board and then weld the connection points. It is necessary to apply solder paste first and then weld. Since the components are placed directly on the PCBA board, the components are prone to warping and floating, and it is difficult to achieve precise fit with the PCBA board. If tin is applied directly for welding, it is easy to have cold solder joints. During the welding process, the solder paste is easy to diffuse toward the four axes, especially flow into the bottom surface of the components, which directly affects the welding quality and thus affects the function of the PCBA board.

[0003] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a double-station PCBA board spot tin laser welding equipment. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a double-station PCBA board spot tin laser welding equipment, which has high efficiency in spot tin welding, can continuously load materials without stopping the machine, can load materials quickly, avoids cold welding, and ensures welding quality.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a double-station PCBA board spot tin laser welding equipment, the double-station PCBA board spot tin laser welding equipment includes a frame, a servo drive module, a welding jig, a tinning mechanism and a soldering mechanism, the frame is equipped with a double-station servo drive module, both servo drive modules are equipped with welding jigs, and the frame on the rear side of the double-station servo drive module is equipped with a tinning mechanism and a soldering mechanism; the welding jig includes a base, a jig plate, a positioning pin, a cover plate and a pressure block, the base is installed on the sliding block of the servo drive module, the base is equipped with a jig plate, the jig plate is provided with an installation groove for placing the PCBA board, the installation groove is provided with a positioning pin for positioning the PCBA board, the jig plate is covered with a cover plate, the jig plate and the cover plate are matched by pin guides, the cover plate is provided with an avoidance opening relative to the product solder point position, and the cover plate is also clamped with a pressure block for pre-pressing components.

[0006] Preferably, a groove for placing components is provided at the lower end of the pressing block, and the pressing block is made of a soft material.

[0007] Preferably, both ends of the base and the fixture plate are provided with access openings for facilitating access to the PCBA board and the cover plate.

[0008] Preferably, the tinning mechanism includes a gantry, a three-axis driving module installed on the gantry, a transfer plate driven to move by the three-axis driving module, a sensor installed on the transfer plate for identifying the jig and the product, a CCD camera for locating the product position, and a tinning needle for applying solder paste.

[0009] Preferably, the soldering mechanism includes a camera module driven by a three-way driving module for identifying the position of solder paste dots, a laser for laser welding, and a dust collecting pipe for collecting welding fumes, and the dust collecting pipe is externally connected to a negative pressure device.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The double-station welding fixture is driven by two sets of servo drive modules, one for loading and the other for spot tinning, with a fast production pace and no downtime.

[0012] The welding fixture can quickly and automatically position the parts to be welded, and can press the components on the PCBA board to avoid cold soldering, seal the components, and prevent the solder paste from flowing into the bottom, thus ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the PCBA board of the touch screen.

[0014] Figure 2 This is a structural schematic diagram of a double-station PCBA board spot tin laser welding equipment.

[0015] Figure 3 This is a partial top view of a dual-station PCBA board spot tin laser welding equipment.

[0016] Figure 4 This is a schematic diagram of the welding fixture structure of a double-station PCBA board spot tin laser welding equipment.

[0017] Figure 5 This is a structural schematic diagram from another perspective of a welding fixture for a double-station PCBA board spot tin laser welding equipment.

[0018] Among them, 1. rack, 2. servo drive module, 3. welding jig, 30. pick-and-place opening, 31. base, 32. jig plate, 33. positioning pin, 34. cover plate, 340. avoidance opening, 35. pressure block, 350. groove, 4. tinning mechanism, 41. door frame, 42. three-axis drive module, 43. transfer plate, 44. in-position sensor, 45. CCD camera, 46. tinning needle, 5. soldering mechanism, 51. camera module, 52. laser, 53. dust collection tube. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] See also Figures 1 to 5 , the utility model embodiment includes:

[0021] A double-station PCBA board spot tin laser welding equipment comprises a frame 1, a servo drive module 2, a welding fixture 3, a spot tin mechanism 4 and a soldering mechanism 5.

[0022] The frame 1 is equipped with a double-station servo drive module 2, and both servo drive modules 2 are equipped with welding fixtures 3. The frame 1 at the rear side of the double-station servo drive module 2 is equipped with a tinning mechanism 4 and a soldering mechanism 5.

[0023] The welding jig 3 includes a base 31, a jig plate 32, a positioning pin 33, a cover plate 34 and a pressure block 35. The base 31 is installed on the sliding block of the servo drive module 2. The jig plate 32 is installed on the base 31. The jig plate 32 is provided with a mounting groove for placing the PCBA board, and the mounting groove is provided with a positioning pin 33 for positioning the PCBA board. The jig plate 32 is covered with a cover plate 34. The jig plate 32 and the cover plate 34 are matched through pin guides. The cover plate 34 is provided with an avoidance opening 340 corresponding to the product welding point position. The cover plate 34 is also clamped with a pressure block 35 for pre-pressing components. The base 31 and the jig plate 32 are provided with openings 30 for taking in and putting in the PCBA board and the cover plate 34 at both ends.

[0024] A groove 350 for placing components is formed at the lower end of the pressing block 35. The pressing block 35 is made of soft material. The components to be soldered on the PCBA board are located in the groove 350 of the pressing block 35. The pressing block 35 is tightly attached to the PCBA board on all sides, which has the effect of sealing the components and preventing solder paste from flowing into the bottom of the components.

[0025] The tinning mechanism 4 includes a gantry 41, a three-axis driving module 42 installed on the gantry 41, a transfer plate 43 driven by the three-axis driving module 42, a sensor 44 installed on the transfer plate 43 for identifying the jig and the product, a CCD camera 45 for locating the product position, and a tinning needle 46 for applying solder paste.

[0026] The soldering mechanism 5 includes a camera module 51 driven by a three-way driving module for identifying the position of solder paste, a laser 52 for laser welding, and a dust collecting pipe 53 for collecting welding fumes. The dust collecting pipe 53 is externally connected to a negative pressure device.

[0027] When the utility model is a double-station PCBA board spot tin laser welding equipment working, the worker puts the PCBA board into the installation groove of the welding fixture 3, aligns the positioning hole on the PCBA board with the positioning pin 33, the worker clamps the cover plate 34 onto the fixture plate 32, presses the pressing block 35 with fingers to pre-tighten the components on the PCBA board, and the servo drive module 2 moves the welding fixture 3 to the bottom of the spot tin mechanism 4. After the in-place sensor 44 recognizes the fixture and the product, the CCD camera 45 visually locates the spot tin position, and the spot tin needle 46 spots solder paste at the soldering point position under the drive of the three-axis drive module 42. The servo drive module 2 continues to move the welding fixture 3 to the bottom of the soldering mechanism 5. After the camera module 51 recognizes the product, the laser 52 performs laser welding, and the dust collecting pipe 53 extracts dust and collects welding exhaust gas and smoke. At the same time, the welding fixture 3 of the other station continues to load the product.

[0028] The utility model discloses a double-station PCBA board spot tin laser welding equipment, which has high efficiency in spot tin welding, can continuously load materials without stopping the machine, can quickly load materials, avoids false soldering, and ensures welding quality.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A double-station PCBA board spot tin laser welding equipment, characterized by: It includes a frame, a servo drive module, a welding jig, a tinning mechanism and a soldering mechanism. A double-station servo drive module is installed on the frame, and welding jigs are installed on both servo drive modules. The tinning mechanism and the soldering mechanism are installed on the frame on the rear side of the double-station servo drive module; the welding jig includes a base, a jig plate, a positioning pin, a cover plate and a pressure block. The base is installed on the sliding block of the servo drive module, and a jig plate is installed on the base. The jig plate is provided with a mounting groove for placing a PCBA board, and a positioning pin for positioning the PCBA board is installed on the mounting groove. The jig plate is covered with a cover plate, and the jig plate and the cover plate are matched through pin guides. The cover plate is provided with an avoidance opening relative to the product solder point position, and a pressure block for pre-pressing components is also clamped on the cover plate.

2. A double-station PCBA board spot tin laser welding equipment according to claim 1, characterized in that: A groove for placing components is provided at the lower end of the pressing block, and the pressing block is made of soft material.

3. A double-station PCBA board spot tin laser welding equipment according to claim 1, characterized in that: Both ends of the base and the fixture plate are provided with access openings for facilitating access to the PCBA board and the cover plate.

4. A double-station PCBA board spot tin laser welding equipment according to claim 1, characterized in that: The tinning mechanism includes a gantry, a three-axis driving module installed on the gantry, a transfer plate driven by the three-axis driving module, a sensor installed on the transfer plate for identifying the jig and the product, a CCD camera for locating the product position, and a tinning needle for applying solder paste.

5. A double-station PCBA board spot tin laser welding equipment according to claim 1, characterized in that: The soldering mechanism includes a camera module driven by a three-way driving module for identifying the position of solder paste dots, a laser for laser welding, and a dust collecting pipe for collecting welding fumes, and the dust collecting pipe is externally connected to a negative pressure device.

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