Welding device for PCBA (Printed Circuit Board Assembly) contact pin

Abstract

The utility model discloses a PCBA pin welding device, which belongs to the technical field of circuit board welding, and comprises a device main body, the device main body comprises a mounting rack, a placing table and a rotating shaft, the mounting rack is provided with two rotating rods which are oppositely arranged, and the rotating shaft is rotatably mounted on the rotating rods; the welding assembly comprises a welding gun and a tin wire fixing piece, and the welding gun and the tin wire fixing piece are installed on the rotating shaft; according to the PCB welding device, the device body is arranged, the PCB to be welded is placed on the placing table, the compressed connecting springs drive the fixing plates to abut against the side face of the PCB, and therefore the PCB is fixed to the placing table; a worker respectively holds and rotates the welding gun and the solder wire fixing piece by two hands until the welding gun and the solder wire fixing piece are aligned to welding points on the PCB, so that the quality problems such as cold welding, insufficient welding and bridging caused by instability of the welding gun and the solder wire fixing piece are avoided, the manual welding process of the worker is effectively assisted, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit board welding, specifically relates to a kind of welding device of PCBA pin. BACKGROUND

[0002] PCBA pin is used to realize the electrical connection and mechanical fixation between printed circuit board or other electronic components;PCBA pin welding is to connect the pin of pin and the pad or via hole on PCB to realize the process of electrical connection and mechanical fixation;

[0003] When small batch production or complex assembly is carried out, manual welding is usually required;First, the tip of soldering gun is aimed at the connection between pad and pin on PCBA board, so that the heat of soldering gun preheats pad and pin;Then the tip of soldering tin wire is close to the connection between pad and pin, and the soldering tin wire starts to melt when the soldering gun is heated to a sufficient temperature;During this process, soldering gun and soldering tin wire must be kept stable at all times to ensure that soldering tin can fully and evenly cover the connection between pad and pin, and once the operation is careless, quality problems such as cold welding, false welding and bridging may occur, which may cause circuit failure during use;In addition, the temperature of soldering gun and soldering tin wire is very high during welding, and soldering tin wire has heat conductivity, so workers are easily scalded when touching soldering tin wire, thus a kind of welding device of PCBA pin is needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of welding device of PCBA pin to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of welding device of PCBA pin, comprising:

[0006] Device main body, the device main body includes mounting bracket, placement table and pivot, the placement table is fixedly installed in mounting bracket, the mounting bracket has two opposite setting rotation rod, the pivot is rotatably installed in the rotation rod;

[0007] Welding assembly, the welding assembly includes soldering gun and soldering tin wire fixing piece, the soldering gun and the soldering tin wire fixing piece are respectively installed in the pivot, and the soldering gun and the soldering tin wire fixing piece are located above the placement table;

[0008] Magnification assembly, the magnification assembly is installed in the mounting bracket.

[0009] As a preferred scheme, the welding assembly further includes telescopic column and telescopic pipe, the telescopic column is connected to the pivot and the soldering gun, and the telescopic pipe is connected to the pivot and the soldering tin wire fixing piece.

[0010] As a preferred scheme, the magnifying assembly comprises a magnifying lens, a rotating drum and a fixed ring, the mounting frame further comprises threaded posts for the rotating drum to rotate, the threaded posts are arranged on the adjacent sides of the rotating rod, the rotating drum is arranged at the middle position of the threaded posts, the magnifying lens is fixed on the circumferential side of the rotating drum, and the fixed ring is rotatably arranged on the threaded posts.

[0011] As a preferred scheme, the threaded posts are provided with threads on the two sides of the rotating drum, two fixed rings are arranged, and the two fixed rings are arranged on the rotating drum and are threadedly connected with the threaded posts, the fixed ring is provided with a plurality of fixed pins arranged at intervals on the side close to the rotating drum, and the two sides of the rotating drum are provided with fixed holes for the fixed pins to be inserted.

[0012] As a preferred scheme, the solder wire fixing member comprises a protective cylinder, fixing blocks, support posts and a return spring, the fixing blocks are arranged in plurality, the side surfaces of the fixing blocks are attached to each other, a channel for fixing the solder wire is formed in the middle of the fixing blocks, the support posts are connected to the inner wall of the protective cylinder and the outer wall of the fixing blocks, and the return spring is sleeved on the support posts.

[0013] As a preferred scheme, the device body further comprises fixing plates and connecting springs, the placing table is provided with sliding grooves, the sliding grooves are arranged in pairs, the pairs of sliding grooves are symmetrically distributed, the fixing plates are slidably arranged in the sliding grooves, and the connecting springs are connected between the fixing plates and the inner walls of the sliding grooves.

[0014] Compared with the prior art, the device has the following beneficial effects:

[0015] The device body comprises a mounting frame, a placing table and a rotating shaft, the mounting frame has two oppositely arranged rotating rods, and the rotating shaft is rotatably mounted on the rotating rods; the welding assembly comprises a welding gun and a solder wire fixing member, and the welding gun and the solder wire fixing member are mounted on the rotating shaft; the PCB to be welded is placed on the upper surface of the placing table, the compressed connecting springs drive the fixing plates to abut against the side surface of the PCB; the worker holds and rotates the welding gun and the solder wire fixing member with both hands until the welding points on the PCB are aligned, so that in the welding process, the quality problems such as cold welding, virtual welding and bridging caused by instability of the welding gun and the solder wire fixing member can be avoided, thereby effectively assisting the manual welding process of the worker and improving the product quality.

[0016] The utility model discloses, be provided with solder wire fixing spare, solder wire fixing spare includes protection cylinder, fixed block, support column and return spring, fixed block sets up a plurality of, the side of a plurality of fixed blocks mutually sticks together, the passage for fixing solder wire is formed among a plurality of fixed blocks, support column is connected in the inner wall of protection cylinder and the outer wall of fixed block, and return spring is set up in support column, under the resilience of return spring, solder wire is fixed between the passage formed among a plurality of fixed blocks, and the end of solder wire to be welded leaks from the lower end of protection cylinder, because worker holds protection cylinder, instead of directly contacting with solder wire, reduces the accident incidence of worker being scalded by solder wire with the heat conductivity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional schematic view of the utility model;

[0018] Figure 2 It is the partial explosion drawing of the utility model;

[0019] Figure 3 It is the Figure 2 partial explosion drawing of A part in the utility model;

[0020] Figure 4 It is the Figure 2 partial explosion drawing of B part in the utility model;

[0021] Figure 5 It is the plan view of the utility model;

[0022] Figure 6 It is the partial explosion drawing of device main body in the utility model.

[0023] In the drawing: 1, device main body;11, mounting frame;111, rotating rod;112, threaded column;12, placing table;121, sliding slot;13, rotating shaft;14, fixed plate;15, connecting spring;2, welding assembly;21, soldering gun;22, solder wire fixing spare;221, protection cylinder;222, fixed block;223, support column;224, return spring;225, passage;23, telescopic column;24, telescopic pipe;3, magnifying assembly;31, magnifying glass;32, rotating cylinder;321, fixed hole;33, fixed ring;331, fixed needle. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with examples.

[0025] The following examples are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and the simple improvement of the method of the utility model under the concept of the utility model belongs to the range of the utility model required protection.

[0026] Please refer to Figures 1-6 The utility model provides a kind of welding device of PCBA pin, comprising:

[0027] Device main body 1, device main body 1 includes mounting bracket 11, placement table 12 and pivot 13, placement table 12 is fixedly installed on mounting bracket 11, mounting bracket 11 has two opposite setting pivot rod 111, pivot 13 is rotatably installed on pivot rod 111;

[0028] Welding assembly 2, welding assembly 2 includes soldering gun 21 and solder wire fixing part 22, soldering gun 21 and solder wire fixing part 22 are installed on pivot 13 respectively, and soldering gun 21 and solder wire fixing part 22 are located above placement table 12;

[0029] Magnification assembly 3, magnification assembly 3 is installed on mounting bracket 11;

[0030] Welding assembly 2 further includes telescopic column 23 and telescopic pipe 24, telescopic column 23 is connected to pivot 13 and soldering gun 21, telescopic pipe 24 is connected to pivot 13 and solder wire fixing part 22;

[0031] Magnification assembly 3 includes magnifying glass 31, rotating cylinder 32 and fixed ring 33, mounting bracket 11 further includes screw column 112 for rotating cylinder 32 to rotate, screw column 112 is arranged on the adjacent side of pivot rod 111, rotating cylinder 32 is arranged at the intermediate position of screw column 112, magnifying glass 31 is fixed to the circumferential side of rotating cylinder 32, and fixed ring 33 is rotatably arranged on screw column 112;

[0032] Screw column 112 is provided with screw thread on the two sides of rotating cylinder 32, fixed ring 33 is provided with two, and the two fixed rings 33 are arranged on rotating cylinder 32 respectively and are screw-connected with screw column 112, the side of fixed ring 33 close to rotating cylinder 32 has a plurality of fixed pins 331 arranged at intervals, and the two sides of rotating cylinder 32 have fixing holes 321 for the insertion of fixed pins 331;

[0033] Solder wire fixing part 22 includes protection cylinder 221, fixed block 222, support column 223 and reset spring 224, the fixed block 222 is provided with a plurality of, the side of the plurality of fixed blocks 222 is mutually abutted, the plurality of fixed blocks 222 forms passage 225 for fixing solder wire in the middle, support column 223 is connected to the inner wall of protection cylinder 221 and the outer wall of fixed block 222, and reset spring 224 is sleeved on support column 223;

[0034] Device main body 1 further includes fixed plate 14 and connecting spring 15, placement table 12 has sliding slot 121, sliding slot 121 is provided with multiple pairs, multiple pairs of sliding slots 121 are symmetrically distributed, fixed plate 14 is slidably arranged in sliding slot 121, and connecting spring 15 is connected to fixed plate 14 and the inner wall of sliding slot 121.

[0035] The working principle and use process of the utility model:

[0036] The PCB to be welded is placed on the upper surface of the placement table 12, the compressed connecting spring 15 drives multiple fixing plates 14 to abut against the side surface of the PCB, so as to fix the PCB to the placement table 12; the worker holds the soldering gun 21 and the solder wire fixing piece 22 with both hands respectively, and rotates the soldering gun 21 and the solder wire fixing piece 22 until aligning with the welding points on the PCB, so that in the welding process, the quality problems such as cold welding, virtual welding and bridging caused by instability of the soldering gun 21 and the solder wire fixing piece 22 can be avoided, thereby effectively assisting the manual welding process of the worker and improving the product quality;

[0037] When the PCB needs to be translated to adjust the welding points, the worker moves the fixing plate 14 slidingly connected in the sliding groove 121, and then drives the PCB to move horizontally on the placement table 12, which is simple in operation and improves the stability of the PCB in the welding process;

[0038] Since the PCBA pin is usually thin, once the operation is not careful, the welding point can be deviated, affecting the welding quality; the worker first rotates the rotating drum 32, so that the magnifying glass 31 on the rotating drum 32 aligns with the welding point of the PCB; then the fixing ring 33 is rotated until the fixing needle 331 is inserted into the fixing hole 321, so as to fix the rotating drum 32 and the magnifying glass 31, so that the welding point is enlarged by setting the magnifying glass 31, helping the worker to observe more clearly, improving the welding quality and reducing the rework rate;

[0039] In addition, under the rebounding force of the reset spring 224, the solder wire is fixed between the channels 225 formed by the multiple fixing blocks 222, and the end to be welded of the solder wire leaks out from the lower end of the protective cylinder 221; since the worker holds the protective cylinder 221 instead of directly contacting with the solder wire, the incidence of the worker being scalded by the solder wire with heat conductivity is reduced.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A welding device for PCBA pins, characterized in that, The utility model relates to a welding device, including: Device body (1), device body (1) including mounting frame (11), placing table (12) and pivot (13), placing table (12) is fixedly installed in mounting frame (11), mounting frame (11) has two opposite setting pivot rod (111), pivot (13) rotatably installed in pivot rod (111); Welding assembly (2), welding assembly (2) including welding torch (21) and solder wire fixing piece (22), welding torch (21) and solder wire fixing piece (22) are installed in pivot (13) respectively, and welding torch (21) and solder wire fixing piece (22) are located above placing table (12); Magnification assembly (3) is installed in mounting frame (11).

2. The PCBA pin welding device according to claim 1, characterized in that: Welding assembly (2) further includes telescopic column (23) and telescopic pipe (24), telescopic column (23) is connected to pivot (13) and welding torch (21), telescopic pipe (24) is connected to pivot (13) and solder wire fixing piece (22).

3. The PCBA pin welding device according to claim 2, characterized in that: Magnification assembly (3) includes magnifying glass (31), rotating cylinder (32) and fixed ring (33), mounting frame (11) further includes threaded column (112) for rotating cylinder (32) rotation, threaded column (112) is arranged on the adjacent side of pivot rod (111), rotating cylinder (32) is arranged in the middle position of threaded column (112), magnifying glass (31) is fixed to the circumferential side of rotating cylinder (32), and fixed ring (33) is rotatably arranged on threaded column (112).

4. The PCBA pin welding device according to claim 3, characterized in that: Threaded column (112) is provided with threads on both sides of rotating cylinder (32), fixed ring (33) is provided with two, and the two fixed rings (33) are arranged on rotating cylinder (32) respectively and are threadedly connected with threaded column (112), fixed ring (33) has a plurality of fixed needles (331) arranged at intervals on the side close to rotating cylinder (32), and both sides of rotating cylinder (32) have fixing holes (321) for inserting fixed needles (331).

5. The PCBA pin welding device of claim 1, wherein: Solder wire fixing piece (22) includes protection cylinder (221), fixed block (222), support column (223) and reset spring (224), fixed block (222) is provided with a plurality of, the side of a plurality of fixed blocks (222) is mutually pasted, and the passage (225) for fixing solder wire is formed in a plurality of fixed blocks (222) middle, support column (223) is connected to the inner wall of protection cylinder (221) and the outer wall of fixed block (222), and reset spring (224) is sleeved on support column (223).

6. The PCBA pin welding device according to claim 5, characterized in that: The device body (1) further comprises a fixing plate (14) and a connecting spring (15), the placing table (12) is provided with a plurality of pairs of sliding grooves (121), the plurality of pairs of sliding grooves (121) are symmetrically distributed, the fixing plate (14) is slidably arranged in the sliding grooves (121), and the connecting spring (15) is connected to the fixing plate (14) and the inner wall of the sliding grooves (121).

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