Spot welding device with limiting structure for PCBA (printed circuit board assembly) board processing tool

Abstract

The utility model relates to the technical field of PCBA board processing, and discloses a PCBA board processing tool spot welding device with a limiting structure, which comprises a frame body, a conveying belt is arranged in the middle of the frame body, four corners of the bottom of the frame body are respectively and fixedly connected with supporting legs, and the frame body is respectively provided with a limiting mechanism, a driving mechanism and a spot welding mechanism. A first electric telescopic rod drives a rectangular block to move, the rectangular block drives a second sliding rod to slide along the inner wall of a second sliding hole, so that a hinge arm is stressed to rotate around a hinge point, the hinge arm drives a first sliding rod to slide along the inner wall of a first sliding hole, and the first sliding rod drives a sliding strip and a limiting plate to move; according to the PCBA welding fixture, the two limiting plates are arranged, so that the two limiting plates move relatively and limit the PCBA, positioning of the PCBA is more accurate, meanwhile, the fixing stability is high, the PCBA is more stable during welding, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBA board processing, and particularly relates to a spot welding device with a limiting structure for PCBA board processing. Background Technique

[0002] A PCBA board is a populated circuit board. The main substrate is generally classified according to the insulating part of the substrate. Common raw materials are bakelite boards, fiberglass boards, and various plastic boards. The main processing process of a PCBA board is generally to integrate components on a PCB board through SMT and DIP. The main difference is that SMT does not require drilling holes in the PCB, while DIP requires inserting the PIN feet of the components into the drilled holes. The welding process of components on a PCBA board is an important step in PCBA board processing. Through a spot welding mechanism, the components can be fixed on the PCBA board.

[0003] However, when the existing spot welding device performs spot welding on a PCBA board, the PCBA board is prone to displacement due to vibration or external force, affecting the accuracy and consistency of spot welding. Therefore, a spot welding device with a limiting structure for PCBA board processing is proposed to solve the above-mentioned problems. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a spot welding device with a limiting structure for PCBA board processing in view of the above-mentioned deficiencies in the prior art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a spot welding device with a limiting structure for PCBA board processing, including a frame body. A conveyor belt is arranged in the middle of the frame body. Four corners of the bottom of the frame body are respectively fixedly connected with support legs. A limiting mechanism, a driving mechanism, a spot welding mechanism, and a cleaning mechanism are respectively arranged on the frame body;

[0006] The limiting mechanism includes: two fixing plates and two fixing bars. The two fixing plates are fixedly connected to the top of the frame body relatively. Slide bars are slidably connected to the opposite surfaces of the two fixing plates. Limiting plates are respectively fixedly connected to the opposite surfaces of the two slide bars. The two fixing bars are respectively fixedly connected to the front and rear sides of the frame body. Hinged arms are hinged to the left and right sides of each fixing bar. The hinged arms are arranged in a "V" shape, and the hinged arms on the front and rear sides are arranged relatively. A first slide hole is opened above the right side of each hinged arm, and a second slide hole is opened below the right side of each hinged arm. Slide bars are respectively fixedly connected to the left and right sides of each slide bar, and the outer walls of the four slide bars are respectively slidably connected to the inner walls of the four first slide holes;

[0007] The driving mechanism includes: four lower support rods. Two of the four lower support rods are fixedly connected to the bottom of the frame body in pairs. The bottom ends of the four lower support rods are fixedly connected with a bottom plate. An electric telescopic rod I is fixedly installed on the top of the bottom plate. The piston end of the electric telescopic rod I is fixedly installed with a rectangular block. Two sliding rods II are fixedly connected to the left and right sides of the rectangular block, and the outer walls of the four sliding rods II are respectively slidably connected to the inner walls of the four sliding holes II.

[0008] Preferably, through holes are formed in the opposite surfaces of the two fixing plates, and the sliding strip is slidably connected in the through holes.

[0009] Preferably, the right sides of the two limiting plates are both arc-shaped and arranged oppositely, and the bottoms of the two limiting plates are both attached to the upper surface of the conveyor belt.

[0010] Preferably, the spot welding mechanism includes: four upper support rods. Two of the four upper support rods are fixedly connected to the top of the frame body in pairs. The top ends of the four upper support rods are fixedly connected with a top plate. An electric slide rail is arranged at the bottom of the top plate. An electric telescopic rod II is installed at the bottom of the electric slide rail. The piston end of the electric telescopic rod II is fixedly installed with a mounting block, and a spot welding gun is fixedly installed at the bottom of the mounting block.

[0011] Preferably, the cleaning mechanism includes: a U-shaped frame. The U-shaped frame is fixedly installed at the bottom of the frame body. Two springs are fixedly connected to the inner wall of the bottom of the U-shaped frame. The top ends of the two springs are fixedly connected with a mounting plate. A cleaning brush is bolted to the top of the mounting plate, and the bristles of the cleaning brush are attached to the lower surface of the conveyor belt.

[0012] Preferably, two fixing rods are fixedly connected to the middle of the frame body. Support plates are fixedly sleeved on the outer walls of the two fixing rods, and the top of the support plate is attached to the inner wall of the top of the conveyor belt.

[0013] The utility model adopts the above technical solutions and can bring the following beneficial effects:

[0014] 1. For the spot welding device with a limiting structure for PCBA board processing, through the combined use of the limiting mechanism and the driving mechanism, the electric telescopic rod I is used to drive the rectangular block to move. The rectangular block drives the sliding rod II to slide along the inner wall of the sliding hole II, so that the articulated arm is stressed and rotates around the hinge point, so that the articulated arm drives the sliding rod I to slide along the inner wall of the sliding hole I, so that the sliding rod I drives the sliding strip and the limiting plate to move, so that the two limiting plates move relatively and limit the PCBA board, making the positioning of the PCBA board more accurate. At the same time, the fixing stability is high, making the PCBA board more stable during welding and improving the processing quality.

[0015] 2. The spot welding device with a limiting structure for PCBA board processing, through the combined use of the U-shaped frame, spring, mounting plate, and cleaning brush, when the conveyor belt moves, uses the cleaning brush to clean the surface of the conveyor belt, thereby removing welding slag, dust, etc. adhering to the surface of the conveyor belt, keeping the surface of the conveyor belt clean and tidy, avoiding the PCBA board being scratched by welding slag and affecting the processing quality, and under the action of the elastic force of the spring itself, pushing up the mounting plate and the cleaning brush, so that the bristles of the cleaning brush always closely fit the surface of the conveyor belt, avoiding the cleaning brush being worn after long-term use and affecting the cleaning effect, and extending the service life of the cleaning brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front structural schematic diagram of the present utility model;

[0017] Figure 2 is a right side sectional view of the present utility model;

[0018] Figure 3 is a front sectional view of the present utility model;

[0019] Figure 4 is a left side sectional view of the present utility model;

[0020] Figure 5 is Figure 4 an enlarged view of part A of

[0021] In the figure: 1, frame body; 2, conveyor belt; 3, support leg; 4, limiting mechanism; 41, fixing plate; 42, sliding strip; 43, limiting plate; 44, fixing strip; 45, articulated arm; 46, first sliding hole; 47, second sliding hole; 48, first sliding rod; 5, driving mechanism; 51, lower support rod; 52, bottom plate; 53, first electric telescopic rod; 54, rectangular block; 55, second sliding rod; 6, spot welding mechanism; 61, upper support rod; 62, top plate; 63, electric slide rail; 64, second electric telescopic rod; 65, mounting block; 66, spot welding gun; 7, cleaning mechanism; 71, U-shaped frame; 72, spring; 73, mounting plate; 74, cleaning brush; 8, fixing rod; 9, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a number of" is two or more unless otherwise clearly and specifically defined.

[0026] Please refer to Figures 1-5, an embodiment of the present utility model is: a spot welding device with a limiting structure for PCBA board processing, including a frame body 1. A conveyor belt 2 is arranged in the middle of the frame body 1. Four corners of the bottom of the frame body 1 are respectively fixedly connected with support legs 3. A limiting mechanism 4, a driving mechanism 5, a spot welding mechanism 6, and a cleaning mechanism 7 are respectively arranged on the frame body 1; The limiting mechanism 4 includes: two fixing plates 41 and two fixing bars 44. The two fixing plates 41 are fixedly connected to the top of the frame body 1 relatively. Slide bars 42 are slidably connected to the opposite surfaces of the two fixing plates 41. Through holes are formed on the opposite surfaces of the two fixing plates 41. The slide bars 42 are slidably connected in the through holes. Limiting plates 43 are respectively fixedly connected to the opposite surfaces of the two slide bars 42. The right sides of the two limiting plates 43 are arc-shaped and arranged relatively. The bottoms of the two limiting plates 43 are in contact with the upper surface of the conveyor belt 2. The two fixing bars 44 are respectively fixedly connected to the front and rear sides of the frame body 1. Hinge arms 45 are hinged to the left and right sides of each fixing bar 44. The hinge arms 45 are arranged in a "V" shape, and the hinge arms 45 on the front and rear sides are arranged relatively. A first sliding hole 46 is formed above the right side of each hinge arm 45. A second sliding hole 47 is formed below the right side of each hinge arm 45. Slide bars 48 are respectively fixedly connected to the left and right sides of each slide bar 42. The outer walls of the four slide bars 48 are respectively slidably connected to the inner walls of the four first sliding holes 46; The driving mechanism 5 includes: four lower support rods 51. The four lower support rods 51 are fixedly connected to the bottom of the frame body 1 in pairs relatively. The bottom ends of the four lower support rods 51 are fixedly connected with a bottom plate 52. An electric telescopic rod 53 is fixedly installed on the top of the bottom plate 52. A rectangular block 54 is fixedly installed at the piston end of the electric telescopic rod 53. Two slide bars 55 are respectively fixedly connected to the left and right sides of the rectangular block 54. The outer walls of the four slide bars 55 are respectively slidably connected to the inner walls of the four second sliding holes 47. The electric telescopic rod 53 is used to drive the rectangular block 54 to move. The rectangular block 54 drives the slide bars 55 to slide along the inner walls of the second sliding holes 47, so that the hinge arms 45 are forced to rotate around the hinge points, so that the hinge arms 45 drive the slide bars 48 to slide along the inner walls of the first sliding holes 46, so that the slide bars 48 drive the slide bars 42 and the limiting plates 43 to move, so that the two limiting plates 43 move relatively and limit the PCBA board, making the positioning of the PCBA board more accurate. At the same time, the fixing stability is high, making the PCBA board more stable during welding and improving the processing quality;The spot welding mechanism 6 includes: four upper support rods 61, and the four upper support rods 61 are fixedly connected to the top of the frame body 1 in pairs and opposite to each other. The tops of the four upper support rods 61 are fixedly connected with a top plate 62. An electric slide rail 63 is arranged at the bottom of the top plate 62. An electric telescopic rod II 64 is installed at the bottom of the electric slide rail 63. The piston end of the electric telescopic rod II 64 is fixedly installed with a mounting block 65. A spot welding gun 66 is fixedly installed at the bottom of the mounting block 65. By starting the electric slide rail 63 to drive the spot welding gun 66 to move to a specified position, and then starting the electric telescopic rod II 64 to drive the mounting block 65 to move downward, the mounting block 65 drives the spot welding gun 66 to move downward close to the PCBA board, so as to perform spot welding operation on the PCBA board; Two fixing rods 8 are fixedly connected to the middle of the frame body 1. Support plates 9 are fixedly sleeved on the outer walls of the two fixing rods 8, and the top of the support plate 9 is in contact with the inner top wall of the conveyor belt 2. The conveyor belt 2 and the PCBA board are supported by the fixing rods 8 and the support plates 9 to prevent the conveyor belt 2 from deforming under force during spot welding, keep the PCBA board stable, and further improve the processing quality.

[0027] Working principle: Place the PCBA board on the conveyor belt 2, and use the conveyor belt 2 to convey the PCBA board. When the PCBA board reaches below the spot welding gun 66, the conveyor belt 2 stops. Start the electric telescopic rod I 53 to contract and drive the rectangular block 54 to move vertically, so that the rectangular block 54 drives the slide rod II 55 to slide along the inner wall of the slide hole II 47, so that the articulated arm 45 is forced to rotate around the hinge point, so that the articulated arm 45 drives the slide rod I 48 to slide along the inner wall of the slide hole I 46, so that the slide rod I 48 drives the slide bar 42 to move horizontally under the limitation of the fixed plate 41. The slide bar 42 drives the limiting plate 43 to move, so that the two limiting plates 43 move relatively and limit the PCBA board, making the positioning of the PCBA board more accurate, and at the same time having high fixing stability. By starting the electric slide rail 63 to drive the spot welding gun 66 to move to a specified position, and then starting the electric telescopic rod II 64 to drive the mounting block 65 to move downward, the mounting block 65 drives the spot welding gun 66 to move downward close to the PCBA board, so as to perform spot welding operation on the PCBA board.

[0028] Please refer to Figures 1-5, on the basis of the above embodiments, in another embodiment of the present utility model, the cleaning mechanism 7 includes: a U-shaped frame 71, the U-shaped frame 71 is fixedly installed at the bottom of the frame body 1, two springs 72 are fixedly connected to the inner wall of the bottom of the U-shaped frame 71, the top ends of the two springs 72 are fixedly connected to a mounting plate 73, a cleaning brush 74 is bolted to the top of the mounting plate 73, and the bristles of the cleaning brush 74 are in contact with the lower surface of the conveyor belt 2. When the conveyor belt 2 moves, the cleaning brush 74 is used to clean the surface of the conveyor belt 2, so as to remove the welding slag, dust, etc. adhering to the surface of the conveyor belt 2, keep the surface of the conveyor belt 2 clean and tidy, avoid the welding slag from scratching the PCBA board and affecting the processing quality, and under the action of the elastic force of the spring 72 itself, the mounting plate 73 and the cleaning brush 74 are pushed upward, so that the bristles of the cleaning brush 74 are always in close contact with the surface of the conveyor belt 2, avoid the cleaning brush 74 from being worn after long-term use and affecting the cleaning effect, and extend the service life of the cleaning brush 74.

[0029] Working principle: When the conveyor belt 2 moves, the bristles of the cleaning brush 74 are always in contact with the lower surface of the conveyor belt 2. The cleaning brush 74 is used to clean the surface of the conveyor belt 2, so as to remove the welding slag, dust, etc. adhering to the surface of the conveyor belt 2, keep the surface of the conveyor belt 2 clean and tidy, and under the action of the elastic force of the spring 72 itself, the mounting plate 73 and the cleaning brush 74 are pushed upward, so that the bristles of the cleaning brush 74 are always in close contact with the surface of the conveyor belt 2, avoid the cleaning brush 74 from being worn after long-term use and affecting the cleaning effect, and extend the service life of the cleaning brush 74.

[0030] It should be noted that, for the sake of convenience of control, the first electric telescopic rod 53, the second electric telescopic rod 64, the electric slide rail 63, and the spot welding gun 66 in the above embodiments are all controlled to open and close by a control switch. The conveyor belt 2 is driven by an external driving device, and an infrared sensor for intelligently controlling the movement and stop of the conveyor belt 2 is provided on the frame body 1. The above are all prior arts and not the main innovation points, so no detailed description will be made here.

[0031] The present utility model provides a spot welding device with a limiting structure for PCBA board processing. There are many methods and ways to specifically implement this technical solution. The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. Each component not clearly defined in this embodiment can be realized by using the prior art.

Claims

1. A spot welding device with a limiting structure for PCBA board processing, comprising a frame (1), characterized in that: A conveyor belt (2) is arranged in the middle of the frame (1), and support legs (3) are fixedly connected to the four corners of the bottom of the frame (1), and a limiting mechanism (4), a driving mechanism (5), a spot welding mechanism (6), and a cleaning mechanism (7) are arranged on the frame (1); The limiting mechanism (4) comprises: two fixing plates (41) and two fixing bars (44); the two fixing plates (41) are relatively fixedly connected to the top of the frame (1); the opposite surfaces of the two fixing plates (41) are slidably connected to the sliding bars (42); the opposite surfaces of the two sliding bars (42) are respectively fixedly connected to the limiting plates (43); the two fixing bars (44) are respectively fixedly connected to the front and rear sides of the frame (1); and the left and right sides of each fixing bar (44) are hingedly connected to a hinge. The articulated arm (45) is arranged in a "V" shape, and the articulated arms (45) on the front and rear sides are arranged opposite to each other, a sliding hole (46) is opened on the upper right side of each articulated arm (45), and a sliding hole (47) is opened on the lower right side of each articulated arm (45), and a sliding rod (48) is fixedly connected to the left and right sides of each slide bar (42), and the outer walls of the four sliding rods (48) are respectively slidably connected to the inner walls of the four sliding holes (46); The driving mechanism (5) comprises: four lower support rods (51), the four lower support rods (51) are fixedly connected to the bottom of the frame body (1) in pairs, the bottom ends of the four lower support rods (51) are fixedly connected to a bottom plate (52), the top of the bottom plate (52) is fixedly mounted with an electric telescopic rod (53), the piston end of the electric telescopic rod (53) is fixedly mounted with a rectangular block (54), the left and right sides of the rectangular block (54) are fixedly connected with two sliding rods (55), and the outer walls of the four sliding rods (55) are respectively slidably connected to the inner walls of the four sliding holes (47).

2. A spot welding device with a limiting structure for PCBA board processing according to claim 1, characterized in that: Through holes are provided on the opposite surfaces of the two fixing plates (41), and the sliding strips (42) are slidably connected in the through holes.

3. The spot welding device with a limiting structure for PCBA board processing according to claim 1, characterized in that: The right sides of the two limit plates (43) are both arc-shaped and are arranged opposite to each other, and the bottoms of the two limit plates (43) are in contact with the upper surface of the conveyor belt (2).

4. The spot welding device with a limiting structure for PCBA board processing according to claim 1, characterized in that: The spot welding mechanism (6) comprises: four upper support rods (61), the four upper support rods (61) are fixedly connected to the top of the frame (1) in pairs, the top ends of the four upper support rods (61) are fixedly connected to a top plate (62), the bottom of the top plate (62) is provided with an electric slide rail (63), the bottom of the electric slide rail (63) is installed with an electric telescopic rod 2 (64), the piston end of the electric telescopic rod 2 (64) is fixedly installed with a mounting block (65), and the bottom of the mounting block (65) is fixedly installed with a spot welding gun (66).

5. The spot welding device with a limiting structure for PCBA board processing according to claim 1, characterized in that: The cleaning mechanism (7) comprises: a U-shaped frame (71), the U-shaped frame (71) is fixedly mounted on the bottom of the frame body (1), two springs (72) are fixedly connected to the inner wall of the bottom of the U-shaped frame (71), the top ends of the two springs (72) are fixedly connected to a mounting plate (73), the top of the mounting plate (73) is bolted to a cleaning brush (74), and the bristles of the cleaning brush (74) are in contact with the lower surface of the conveyor belt (2).

6. The spot welding device with a limiting structure for PCBA board processing according to claim 1, characterized in that: Two fixing rods (8) are fixedly connected to the middle of the frame (1); the outer walls of the two fixing rods (8) are fixedly sleeved with support plates (9), and the top of the support plates (9) fits with the top inner wall of the conveyor belt (2).

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