Double-row integrated circuit board welding process

Abstract

The invention discloses a double-row integrated circuit board welding process, which relates to the technical field of integrated circuit board processing, and comprises the following steps: cleaning: cleaning a welding area of a circuit board; welding: after the circuit board is positioned, welding the corresponding pins of the plurality of groups of components at the welding spots through a welding device; specifically, the circuit board in the embodiment is provided with double rows of welding spots, each row of welding spots is divided into two columns, and two groups of adjacent welding spots are respectively used for being welded with pins of components; checking: after the welding is completed, checking whether each pin is correctly welded or not; trimming: trimming redundant pins; before welding, the circuit board is firstly positioned and fixed through the positioning module, then the pins of the to-be-welded components are inserted into the two groups of adjacent welding spots, and then the pins are welded at the welding spots through the welding modules, so that the four groups of pins of the two components can be respectively welded at the same time by arranging the two groups of welding modules; and the welding efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of integrated circuit board processing, and in particular to a double-row integrated circuit board welding process. Background Art

[0002] A double row integrated circuit board is a plastic board or fiberglass board that carries electronic components. Its characteristic is that the electronic components are arranged in two rows. These electronic components are connected to the conductive copper foil by welding or insertion to form a circuit. Through these circuit connections, signal transmission and energy transfer can be carried out between electronic components, thereby realizing various functions of electronic equipment.

[0003] In the process of processing a double-row integrated circuit board, it is necessary to solder the integrated circuit chip or other electronic components to the circuit board. In the prior art, for example, the patent document with the announcement number CN109922609B discloses an intelligent auxiliary soldering device for an integrated circuit board, and also discloses that the extension of the solder wire can be controlled by a clamping device, and the wire tube and the guide sleeve can facilitate the movement of the solder wire, so that people can fix the circuit components during soldering;

[0004] However, in actual application, the welding auxiliary device can only weld one component pin at a time. At the same time, during welding, the molten welding wire cannot be evenly distributed around the welding point, resulting in uneven welding points and affecting the welding quality. Summary of the invention

[0005] The purpose of the present invention is to provide a double-row integrated circuit board welding process to solve the following technical problems:

[0006] The welding auxiliary device can only weld one component pin at a time. At the same time, during welding, the molten welding wire cannot be evenly distributed around the welding point, resulting in uneven welding points and affecting the welding quality.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A double-row integrated circuit board welding process comprises the following steps:

[0009] Cleaning: Clean the soldering area of ​​the circuit board;

[0010] Welding: After positioning the circuit board, the corresponding pins of several groups of components are welded at the welding points by a welding device; specifically, the circuit board in this embodiment is provided with double rows of welding points, each row of welding points is divided into two columns, and two groups of adjacent welding points are respectively used for welding with the pins of the components;

[0011] Check: After soldering is complete, check whether each pin is properly soldered;

[0012] Trim: Trim excess pins.

[0013] Preferably, the welding device comprises a welding table, and the welding table is provided with a positioning module for positioning the circuit board;

[0014] Two groups of welding modules are symmetrically arranged on the positioning module, and each group of welding modules is used for welding two rows of welding points respectively.

[0015] Preferably, each group of the welding modules includes a welding box, in which a melting chamber for heating and melting the tin solder wire is provided, and a terminal mechanism is symmetrically arranged at one end of the welding box facing the positioning module for conveying the molten melt to the welding point.

[0016] Preferably, the end head mechanism comprises a receiving tube symmetrically arranged in the welding box, the receiving tube is connected to a conical tube arranged at the bottom of the welding box, the axial ends of the receiving tube and the conical tube are fixedly arranged with a positioning tube, a storage cavity for storing molten liquid is formed between the receiving tube and the conical tube and the positioning tube, and both sides of the bottom of the melting cavity are respectively connected to the storage cavity through the infusion channel;

[0017] Wherein, two groups of first openings for connecting to the storage cavity are symmetrically formed at the bottom of the positioning tube.

[0018] Preferably, a drainage cylinder is slidably arranged in the positioning cylinder, the outer cylinder wall of the drainage cylinder is slidably fitted with the inner cylinder wall of the positioning cylinder, a second opening corresponding to the first opening is symmetrically opened on the drainage cylinder, supports are symmetrically fixedly arranged on both sides of the welding box, a guide rod fixed to the bottom of the drainage cylinder is slidably arranged in the support, and a first spring is arranged on the guide rod;

[0019] Wherein, the welding module also includes a lifting part, and the lifting part is used to drive the welding box to rise and fall in the vertical direction.

[0020] Preferably, the lifting part comprises L-shaped brackets respectively fixed to the welding boxes, the L-shaped brackets on both sides are fixed by a connecting frame, and also comprises a driving cylinder, and the driving end of the driving cylinder is fixed to the connecting frame;

[0021] Wherein, a synchronous belt mechanism is fixedly arranged on one side of the welding table, and the synchronous belt mechanism is used to drive the driving cylinder to move along the length direction of the circuit board.

[0022] Preferably, the positioning module comprises a positioning frame, which is fixed to the welding table through four sets of mounting frames; along the length direction of the circuit board, two sets of first telescopic cylinders are symmetrically arranged in the positioning frame, and the ends of the first telescopic cylinders are fixed to the first positioning plate; along the width direction of the circuit board, two sets of second telescopic cylinders are symmetrically arranged in the positioning frame, and the ends of the second telescopic cylinders are fixed to the second positioning plate;

[0023] Wherein, the first telescopic cylinder is provided with a second spring, the second telescopic cylinder is provided with a third spring, and the base is fixedly arranged at one end where the two sets of second positioning plates are close to each other.

[0024] Preferably, a bearing plate for bearing components is provided between the welding platform and the positioning frame, and a bearing groove for embedding components is provided on the bearing plate;

[0025] The welding table also has a screw rod that is rotatably arranged, a nut is symmetrically spirally sleeved on the screw rod, a push rod is rotatably arranged on the nut, and the other end of the push rod is rotatably connected to the bearing plate;

[0026] Among them, a limit frame is fixedly arranged between the two groups of mounting frames, two groups of limit rods are symmetrically fixedly arranged on the limit frame, the bearing plate is slidably connected to the limit rods, the first gears are fixedly arranged at both ends of the screw, and pillars are also symmetrically fixedly arranged on both sides of the welding table, racks are slidably sleeved on the pillars, the ends of the racks on both sides are fixed to the adjustment plate, a through groove is provided in the adjustment plate, and the connecting frame is slidably arranged in the through groove.

[0027] Preferably, a welding wire reel for winding tin welding wire is rotatably arranged on one side of the L-shaped bracket, and a guide wheel is rotatably arranged on one side of the L-shaped bracket;

[0028] Wherein, a through hole for connecting with the melting chamber is opened on the welding box, and the tin welding wire passes through the guide wheel and the through hole in sequence and enters the melting chamber.

[0029] Preferably, the second gear and the third gear are respectively arranged by rotating in the vertical direction on one side of the two groups of L-shaped brackets that are close to each other, the second gear is fixed to the first conveying wheel, and the first conveying wheels on both sides are fixed by connecting shafts; the third gear is fixed to the second conveying wheel, and a conveying channel for conveying tin solder wire is provided between the first conveying wheel and the second conveying wheel;

[0030] Wherein, a driving motor is fixedly arranged on the outer side of the L-shaped bracket on one side, and the output end of the driving motor is fixed to the second gear.

[0031] Beneficial effects of the present invention:

[0032] (1) Before welding, the present invention firstly positions and fixes the circuit board through the positioning module, then inserts the pins of the components to be welded into two groups of adjacent welding points, and then welds the pins at the welding points through the welding module. By setting two groups of welding modules, the present invention can weld four groups of pins of two components at the same time, which can effectively improve the welding efficiency;

[0033] (2) The present invention provides a drain cylinder. When it is not contracted, the drain cylinder is in a sealed state with respect to the first opening, and the molten liquid cannot be discharged. As a result, the molten liquid that falls into the storage cavity can be distributed in a ring shape in the storage cavity. When the molten liquid is discharged from the drain cylinder, it can be discharged to the welding point at various angles, so that the molten liquid at the welding point is more uniform and the stability is enhanced. At the same time, during the contraction process, the drain cylinder synchronously drives the guide rod to rise in the support, so as to drive the first spring to stretch and generate elastic force. During this process, the elastic force reacts on the circuit board through the drain cylinder, so as to achieve a pressing effect on the circuit board, thereby improving the stability of the circuit board during welding, avoiding the phenomenon of deviation or shaking, and achieving higher stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 This is a double-row integrated circuit board welding process flow chart of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a welding device in a double-row integrated circuit board welding process of the present invention;

[0037] Figure 3 It is a structural schematic diagram of a welding box of a welding device in a double-row integrated circuit board welding process of the present invention;

[0038] Figure 4 It is a schematic diagram of the internal structure of a welding box of a welding device in a double-row integrated circuit board welding process of the present invention;

[0039] Figure 5 It is a schematic diagram of the structure of a carrier plate of a welding device in a double-row integrated circuit board welding process of the present invention;

[0040] Figure 6 It is a schematic diagram of the structure of a circuit board of a welding device in a double-row integrated circuit board welding process of the present invention;

[0041] Figure 7 The invention discloses a schematic structural diagram of a base of a welding device in a double-row integrated circuit board welding process.

[0042] In the figure: 1, welding table; 2, circuit board; 3, positioning frame; 4, driving cylinder; 5, L-shaped bracket; 6, welding box; 7, bearing plate; 101, mounting frame; 102, limiting frame; 103, pillar; 104, limiting rod; 105, synchronous belt mechanism; 201, welding point; 202, components; 203, pin; 301, first telescopic cylinder; 302, second spring; 303, second telescopic cylinder; 304, third spring; 305, first positioning plate; 306, second positioning plate; 307, base; 401, connecting frame; 402, adjusting plate; 403, through groove; 404, rack; 405, support shaft; 406, welding wire reel; 407, circular groove; 408, tin solder wire; 501, driving motor; 502, guide wheel; 503, second gear; 504, third gear; 505, second conveying wheel; 506, connecting shaft; 507, first conveying wheel; 601, through hole; 602, conical cylinder; 603, liquid discharge cylinder; 604, support; 605, guide rod; 606, first spring; 607, second opening; 608, receiving cylinder; 609, storage chamber; 610, first opening; 611, positioning cylinder; 612, melting chamber; 613, infusion channel; 701, screw; 702, nut; 703, first gear; 704, push rod; 705, bearing groove. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1

[0045] See also Figure 1 As shown, the present invention is a double-row integrated circuit board welding process, comprising the following steps:

[0046] S100, cleaning: cleaning the welding area of ​​the circuit board 2;

[0047] S200, welding: after positioning the circuit board 2, the corresponding pins 203 of several groups of components 202 are welded to the welding points 201 by a welding device; specifically, the circuit board 2 in this embodiment is provided with two rows of welding points 201, each row of welding points 201 is divided into two columns, and two groups of adjacent welding points 201 are respectively used for welding with the pins 203 of the components 202;

[0048] S300, check: after the welding is completed, check whether each pin 203 has been correctly welded;

[0049] S400, trimming: trim the redundant pins 203 to a moderate length so as not to affect the installation and use of the circuit board.

[0050] Example 2

[0051] Based on Example 1, please refer to Figure 2 , the welding device comprises a welding table 1, on which a positioning module for positioning a circuit board 2 is provided;

[0052] Two groups of welding modules are symmetrically arranged on the positioning module, and each group of welding modules is used to weld two rows of solder joints 201; specifically, before welding, the circuit board 2 is first positioned and fixed by the positioning module, and then the pins 203 of the components 202 to be welded are inserted into the two groups of adjacent solder joints 201, and then the pins 203 are welded at the solder joints 201 through the welding module. By setting two groups of welding modules, this embodiment can weld four groups of pins 203 of two components 202 at the same time, which can effectively improve the welding efficiency.

[0053] In this embodiment, please refer to Figure 3 and Figure 4 Each welding module group includes a welding box 6, in which a melting chamber 612 for heating and melting the tin solder wire 408 is provided. The end of the welding box 6 facing the positioning module is symmetrically arranged with a terminal mechanism for conveying the molten molten liquid to the soldering point 201; specifically, in this embodiment, the tin solder wire 408 is a lead-tin solder wire or a lead-free solder wire, and the heating temperature of the melting chamber 612 is set accordingly based on the type of the tin solder wire 408. This embodiment is not limited to this. It can be explained that the tin solder wire 408 is first melted in the melting chamber 612, and the molten molten liquid is conveyed to the soldering point 201 through the terminal mechanism, and then the pin 203 is welded;

[0054] Specifically, the end mechanism includes a receiving tube 608 symmetrically arranged in the welding box 6, the receiving tube 608 is connected to the tapered tube 602 arranged at the bottom of the welding box 6, the receiving tube 608 and the axial end of the tapered tube 602 are fixedly arranged with a positioning tube 611, and a storage cavity 609 for storing molten liquid is formed between the receiving tube 608 and the tapered tube 602 and the positioning tube 611, and the two sides of the bottom of the melting cavity 612 are respectively connected to the storage cavity 609 through the infusion channel 613, wherein the bottom of the positioning tube 611 is symmetrically provided with two groups of first openings 610 for connecting the storage cavity 609; it can be explained that after the tin solder wire 408 is melted in the melting cavity 612, it enters the storage cavity 609 along the infusion channel 613, and is finally discharged through the first opening 610;

[0055] See also Figure 3-Figure 4As a further solution of this embodiment, a drainage cylinder 603 is slidably arranged in the positioning cylinder 611, and the outer cylinder wall of the drainage cylinder 603 is slidably fitted with the inner cylinder wall of the positioning cylinder 611, and a second opening 607 corresponding to the first opening 610 is symmetrically opened on the drainage cylinder 603, and supports 604 are symmetrically fixedly arranged on both sides of the welding box 6, and a guide rod 605 fixed to the bottom of the drainage cylinder 603 is slidably arranged in the support 604, and a first spring 606 is provided on the guide rod 605, one end of the first spring 606 is fixed to the support 604, and the other end is fixed to the end of the guide rod 605, wherein the welding module further includes a lifting part, and the lifting part is used to drive the welding box 6 to rise and fall in the vertical direction; it can be said that It is clear that before welding, the welding box 6 is at a preset height and there is a certain distance from the circuit board 2. During welding, the welding box 6 is driven by the lifting part to move toward the circuit board 2, and the pins 203 of the components 202 first extend into the drain cylinder 603. As the welding box 6 continues to descend, the drain cylinder 603 contacts the circuit board 2. At this time, the drain cylinder 603 can be pushed to shrink toward the welding box 6 under the action of pressure. When it shrinks to the extreme position, the first opening 610 is connected with the second opening 607. At this time, the molten liquid in the storage cavity 609 can enter the drain cylinder 603 along the first opening 610 and the second opening 607, and finally be discharged into the welding point 201 and welded with the pins 203;

[0056] It should also be noted that, in this embodiment, by providing a drain cylinder 603, when it is not contracted, the drain cylinder 603 is in a sealed state with respect to the first opening 610, and the molten liquid cannot be discharged, so that the molten liquid falling into the storage cavity 609 can be distributed in a ring shape in the storage cavity 609, so that when the molten liquid is discharged from the drain cylinder 603, it can be discharged to the solder joint 201 at various angles, so that the molten liquid at the solder joint 201 is more uniform and the stability is enhanced; at the same time, during the contraction process, the drain cylinder 603 synchronously drives the guide rod 605 to rise in the support 604, so as to drive the first spring 606 to stretch and generate elastic force. During this process, the elastic force reacts on the circuit board 2 through the drain cylinder 603, so as to achieve a clamping effect on the circuit board 2, thereby improving the stability of the circuit board 2 during welding, avoiding the phenomenon of deviation or shaking, and achieving higher stability.

[0057] See also Figure 2, the lifting part includes an L-shaped bracket 5 fixed to the welding box 6 respectively, and the L-shaped brackets 5 on both sides are fixed by a connecting frame 401, and also includes a driving cylinder 4, and the driving end of the driving cylinder 4 is fixed to the connecting frame 401, wherein a synchronous belt mechanism 105 is fixedly arranged on one side of the welding table 1, and the synchronous belt mechanism 105 is used to drive the driving cylinder 4 to move along the length direction of the circuit board 2; specifically, the synchronous belt mechanism 105 includes a synchronous belt, and the synchronous belt is sleeved on two groups of rotating rollers, one of which is fixed to the motor device; it should be noted that in this embodiment, the synchronous belt mechanism 105 first drives the driving cylinder 4 to move along the length direction of the circuit board 2, so that the liquid discharge cylinder 603 just moves to the corresponding welding point 201 and stops, and then the connecting frame 401 is driven by the driving cylinder 4 to move toward the direction of the circuit board 2. After a group of welding points 201 are welded, the driving end of the driving cylinder 4 is reset, and it is driven to move to the next welding point 201 by the synchronous belt mechanism 105, and so on, the welding of two rows of welding points 201 can be completed.

[0058] As a further solution of this embodiment, please refer to Figure 2 , Figure 5-Figure 7 The positioning module includes a positioning frame 3, which is fixed to the welding table 1 through four sets of mounting frames 101. Along the length direction of the circuit board 2, two sets of first telescopic cylinders 301 are symmetrically arranged in the positioning frame 3, and the ends of the first telescopic cylinders 301 are fixed to the first positioning plate 305. Along the width direction of the circuit board 2, two sets of second telescopic cylinders 303 are symmetrically arranged in the positioning frame 3, and the ends of the second telescopic cylinders 303 are fixed to the second positioning plate 306. The first telescopic cylinder 301 is provided with a second spring 302, and the second telescopic cylinder 303 is provided with a The third spring 304 and the base 307 are fixedly arranged at one end where the two sets of second positioning plates 306 are close to each other; it can be explained that when positioning the circuit board 2, the first positioning plate 305 and the second positioning plate 306 are first pulled toward the side away from each other, and at this time, the first telescopic cylinder 301 and the second telescopic cylinder 303 synchronously drive the second spring 302 and the third spring 304 to contract, and the circuit board 2 is placed on the base 307. Based on the elastic force of the second spring 302 and the third spring 304, the circuit board 2 can be positioned for subsequent welding;

[0059] A carrying plate 7 for carrying components 202 is also provided between the welding platform 1 and the positioning frame 3, and a carrying groove 705 for embedding the components 202 is correspondingly opened on the carrying plate 7; specifically, before welding, each component 202 is first embedded in the corresponding carrying groove 705 for positioning, so that the pins 203 on each component 202 correspond to the soldering points 201 on the circuit board 2;

[0060] See also Figure 2 and Figure 5Specifically, a screw rod 701 is rotatably arranged on the welding table 1, and the threads on both sides of the screw rod 701 are rotated in opposite directions. A nut 702 is symmetrically spirally sleeved on the screw rod 701, and a push rod 704 is rotatably arranged on the nut 702. The other end of the push rod 704 is rotatably connected to the bearing plate 7, wherein a limit frame 102 is fixedly arranged between the two sets of mounting frames 101, and two sets of limit rods 104 are symmetrically fixedly arranged on the limit frame 102. The bearing plate 7 is slidably connected to the limit rod 104, and the first gear 703 is fixedly arranged at both ends of the screw 701. Pillars 103 are also symmetrically fixedly arranged on both sides of the welding table 1. Racks 404 are slidably sleeved on the pillars 103, and the ends of the racks 404 on both sides are fixed to the adjustment plate 402 A through slot 403 is provided in the adjustment plate 402, and the connecting frame 401 is slidably arranged in the through slot 403; it can be explained that when the driving cylinder 4 drives the welding box 6 to move toward the circuit board 2, the connecting frame 401 can synchronously drive the adjusting plate 402 and the rack 404 to move toward the welding table 1, and the rack 404 drives the screw 701 to rotate by engaging with the first gear 703. During the movement of the nut 702 on the screw 701, the push rod 704 pushes the supporting plate 7 to move toward the positioning frame 3, so that the pins 203 on each component 202 are plugged into the soldering point 201. Correspondingly, when the driving end of the driving cylinder 4 is reset, the supporting plate 7 is reset synchronously.

[0061] For further information, see Figure 2 , a welding wire reel 406 for winding a tin welding wire 408 is also rotatably arranged on one side of the L-shaped bracket 5, and a guide wheel 502 is also rotatably arranged on one side of the L-shaped bracket 5, wherein a through hole 601 for connecting to a melting chamber 612 is opened on the welding box 6, and the tin welding wire 408 passes through the guide wheel 502 and the through hole 601 in turn into the melting chamber 612; specifically, during welding, the welding wire reel 406 is rotatably arranged on the L-shaped bracket 5, and then the tin welding wire 408 passes through the guide wheel 502 and the through hole 601 in turn into the melting chamber 612 for melting, and a molten liquid can be obtained;

[0062] In addition, in order to facilitate the replacement of the welding wire reel 406, in this embodiment, the support shaft 405 is fixedly arranged at the end of the L-shaped bracket 5, and a circular groove 407 is opened at the center end of the welding wire reel 406. When installing, the welding wire reel 406 can be sleeved on the support shaft 405 along the circular groove 407, which is convenient to operate;

[0063] In order to transport the solder wire 408, in this embodiment, the second gear 503 and the third gear 504 are respectively rotated and arranged along the vertical direction on one side of the two groups of L-shaped brackets 5 close to each other, the second gear 503 is fixed to the first conveying wheel 507, the first conveying wheels 507 on both sides are fixed by the connecting shaft 506, the third gear 504 is fixed to the second conveying wheel 505, and a conveying channel for conveying the solder wire 408 is provided between the first conveying wheel 507 and the second conveying wheel 505, wherein a driving motor 501 is fixedly arranged on the outer side of the L-shaped bracket 5 on one side, and the output end of the driving motor 501 is fixed to the second gear 503; it can be explained that when conveying the solder wire 408, the solder wire 408 is passed through the conveying channel, the driving motor 501 is started to drive the second gear 503 to rotate, the second gear 503 drives the first conveying wheel 507 to rotate, and the second gear 503 drives the second conveying wheel 505 to rotate by meshing with the third gear 504, and the solder wire 408 can be input into the melting chamber 612 based on the friction between the two;

[0064] It should be noted that in this embodiment, the controller can control the rotation frequency of the driving motor 501 to adjust the conveying length of the tin solder wire 408 to meet the welding requirements. At the same time, elastic pads can be set on the surfaces of the first conveying wheel 507 and the second conveying wheel 505 to increase the friction between them and the tin solder wire 408, thereby making the conveying more stable.

[0065] The welding method of the welding device of this embodiment includes the following steps:

[0066] Place the circuit board 2 in the positioning frame 3 for positioning;

[0067] Embed each component 202 into the corresponding bearing slot 705 so that the pin 203 of each component 202 corresponds to the solder joint 201;

[0068] The welding wire reel 406 is sleeved on the support shaft 405, and the tin welding wire 408 passes around the guide wheel 502 and passes through the conveying channel;

[0069] The driving motor 501 is started to drive the second gear 503 to rotate, and the second gear 503 drives the first conveying wheel 507 to rotate. The second gear 503 drives the second conveying wheel 505 to rotate by meshing with the third gear 504, and the solder wire 408 is input into the melting chamber 612;

[0070] The synchronous belt mechanism 105 first drives the driving cylinder 4 to move along the length direction of the circuit board 2, so that the liquid discharge cylinder 603 moves to the corresponding welding point 201 and stops;

[0071] After the solder wire 408 is melted in the melting chamber 612 , it flows into the storage chamber 609 along the infusion channel 613 ;

[0072] The driving cylinder 4 drives the connecting frame 401 to move toward the circuit board 2, and the drain cylinder 603 contacts the circuit board 2. Under the action of pressure, the drain cylinder 603 is pushed to shrink toward the welding box 6. When it shrinks to the limit position, the first opening 610 is connected with the second opening 607, and the molten liquid enters the drain cylinder 603 along the first opening 610 and the second opening 607, and finally is discharged into the welding point 201 to be welded with the pin 203;

[0073] This reciprocating process can realize the welding of double rows of welding points 201 .

[0074] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0075] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A double-row integrated circuit board welding process, characterized in that: The steps include: Cleaning: cleaning the welding area of ​​the circuit board (2); Welding: after positioning the circuit board (2), corresponding pins (203) of a plurality of groups of components (202) are welded to the welding points (201) by means of a welding device; specifically, the circuit board (2) in this embodiment is provided with two rows of welding points (201), each row of welding points (201) is divided into two columns, and two groups of adjacent welding points (201) are respectively used for welding with the pins (203) of the components (202); Inspection: After soldering is completed, check whether each pin (203) is correctly soldered; Trim: Trim excess pins (203).

2. A double row integrated circuit board welding process according to claim 1, characterized in that: The welding device comprises a welding platform (1), and a positioning module for positioning a circuit board (2) is provided on the welding platform (1); Two groups of welding modules are symmetrically arranged on the positioning module, and each group of welding modules is used for welding two rows of welding points (201).

3. A double row integrated circuit board welding process according to claim 2, characterized in that: Each group of welding modules comprises a welding box (6), in which a melting chamber (612) for heating and melting the tin solder wire (408) is provided, and a terminal mechanism is symmetrically arranged at one end of the welding box (6) facing the positioning module, so as to transport the molten molten liquid to the welding point (201).

4. A double row integrated circuit board welding process according to claim 3, characterized in that: The end mechanism comprises a receiving tube (608) symmetrically arranged in the welding box (6), the receiving tube (608) is connected to a conical tube (602) arranged at the bottom of the welding box (6), a positioning tube (611) is fixedly arranged at the axial ends of the receiving tube (608) and the conical tube (602), a storage chamber (609) for storing molten liquid is formed between the receiving tube (608) and the conical tube (602) and the positioning tube (611), and both sides of the bottom of the melting chamber (612) are connected to the storage chamber (609) through a liquid infusion channel (613) respectively; The bottom of the positioning tube (611) is symmetrically provided with two groups of first openings (610) for connecting to the storage cavity (609).

5. A double row integrated circuit board welding process according to claim 4, characterized in that: A liquid discharge cylinder (603) is slidably arranged in the positioning cylinder (611), the outer cylinder wall of the liquid discharge cylinder (603) is slidably fitted with the inner cylinder wall of the positioning cylinder (611), a second opening (607) corresponding to the first opening (610) is symmetrically opened on the liquid discharge cylinder (603), supports (604) are symmetrically fixedly arranged on both sides of the welding box (6), a guide rod (605) fixed to the bottom of the liquid discharge cylinder (603) is slidably arranged in the support (604), and a first spring (606) is provided on the guide rod (605); The welding module further comprises a lifting part, which is used to drive the welding box (6) to move up and down in a vertical direction.

6. A double row integrated circuit board welding process according to claim 5, characterized in that: The lifting part comprises an L-shaped bracket (5) respectively fixed to the welding box (6), the L-shaped brackets (5) on both sides are fixed by a connecting frame (401), and also comprises a driving cylinder (4), the driving end of the driving cylinder (4) is fixed to the connecting frame (401); Wherein, a synchronous belt mechanism (105) is fixedly arranged on one side of the welding table (1), and the synchronous belt mechanism (105) is used to drive the driving cylinder (4) to move along the length direction of the circuit board (2).

7. A double row integrated circuit board welding process according to claim 6, characterized in that: The positioning module comprises a positioning frame (3), and the positioning frame (3) is fixed on the welding table (1) through four groups of mounting frames (101).

8. A double row integrated circuit board welding process according to claim 7, characterized in that: A carrying plate (7) for carrying components (202) is also provided between the welding platform (1) and the positioning frame (3), and a carrying groove (705) for embedding components (202) is correspondingly provided on the carrying plate (7); A screw rod (701) is also rotatably arranged on the welding table (1), a nut (702) is symmetrically spirally sleeved on the screw rod (701), a push rod (704) is rotatably arranged on the nut (702), and the other end of the push rod (704) is rotatably connected to the bearing plate (7); A limiting frame (102) is fixedly arranged between the two groups of mounting frames (101), two groups of limiting rods (104) are symmetrically fixedly arranged on the limiting frame (102), the bearing plate (7) is slidably connected to the limiting rods (104), a first gear (703) is fixedly arranged at both ends of the screw rod (701), pillars (103) are also symmetrically fixedly arranged on both sides of the welding platform (1), racks (404) are slidably sleeved on the pillars (103), the ends of the racks (404) on both sides are fixed to the adjustment plate (402), a through slot (403) is provided in the adjustment plate (402), and the connecting frame (401) is slidably arranged in the through slot (403).

9. A double row integrated circuit board welding process according to claim 6, characterized in that: A welding wire reel (406) for winding a tin welding wire (408) is also rotatably arranged on one side of the L-shaped bracket (5), and a guide wheel (502) is also rotatably arranged on one side of the L-shaped bracket (5); The welding box (6) is provided with a through hole (601) for connecting to the melting chamber (612), and the solder wire (408) passes through the guide wheel (502) and the through hole (601) in sequence and enters the melting chamber (612).

10. A double row integrated circuit board welding process according to claim 9, characterized in that: The second gear (503) and the third gear (504) are respectively arranged by rotating in the vertical direction on the side where the two groups of L-shaped brackets (5) are close to each other; the second gear (503) is fixed to the first conveying wheel (507), the third gear (504) is fixed to the second conveying wheel (505), the first conveying wheels (507) on both sides are fixed by a connecting shaft (506), and a conveying channel for conveying tin solder wire (408) is provided between the first conveying wheel (507) and the second conveying wheel (505); Wherein, a driving motor (501) is fixedly arranged on the outer side of the L-shaped bracket (5) on one side, and the output end of the driving motor (501) is fixed to the second gear (503).

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