Circuit board welding jig

Abstract

The utility model relates to the field of circuit board welding production, and discloses a circuit board welding jig which comprises a base, a leveling plate, a positioning assembly and a driving device, and the leveling plate is arranged on the base and provided with a containing groove used for containing a circuit board; the positioning assembly comprises a positioning block and an elastic piece, the positioning block is arranged on the leveling plate in a sliding mode, and the elastic piece is arranged on the leveling plate and connected with the positioning block; the driving device is arranged on the base and used for driving the positioning block to move; when the leveling plate and the circuit board are locked, the elastic piece drives the positioning block to abut against the circuit board so that the circuit board can be fixed to the leveling plate. And when the leveling plate and the circuit board are unlocked, the driving device overcomes the elastic force of the elastic piece, so that the positioning block does not abut against the circuit board. The circuit board welding jig provided by the utility model can solve the problem of how to quickly disassemble and assemble the circuit board.

Description

Technical Field

[0001] The utility model relates to the field of circuit board welding production, and particularly relates to a circuit board welding jig. Background Art

[0002] A circuit board is a carrier for electronic components. At present, the welding operation of welding electronic components onto a circuit board is generally completed by an automatic soldering device. However, due to the relatively thin thickness of some circuit boards, they are prone to warping and deformation under high temperature during the welding process, resulting in poor flatness and causing the preset welding positions to shift, thereby affecting the welding quality.

[0003] Therefore, there is currently provided a welding jig. The jig is provided with a receiving groove for accommodating the circuit board, and the bottom of the receiving groove has a welding port for exposing the positions to be welded on the circuit board. In this way, before welding, first fix the circuit board in the receiving groove of the welding jig, and then fix the jig to the workbench of the soldering device for welding operations. During the welding process, the welding jig can keep the circuit board flat at all times. After welding, take out the welded circuit board from the receiving groove.

[0004] The welding jig fixes the circuit board in the receiving groove by screwing, and there are at least two screwing positions to ensure that the circuit board will not fall out of the receiving groove during the welding process. As a result, the operations of installing the circuit board onto the welding jig and removing it from the welding jig are both relatively complex and time-consuming, thereby resulting in low overall production efficiency of the circuit board. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The utility model provides a circuit board welding jig, which can at least solve the technical problem of how to quickly disassemble and assemble the circuit board.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions: A circuit board welding jig, comprising:

[0009] A base;

[0010] A flat plate, arranged on the base and provided with a receiving groove for accommodating the circuit board;

[0011] A positioning assembly, including a positioning block and an elastic member. The positioning block is slidably arranged on the flat plate, and the elastic member is arranged on the flat plate and connected to the positioning block;

[0012] A driving device, arranged on the base and used for driving the positioning block to move;

[0013] When the flat plate and the circuit board are locked, the elastic member drives the positioning block to press against the circuit board to fix the circuit board on the flat plate;

[0014] When the leveling plate and the circuit board are unlocked, the driving device overcomes the elastic force of the elastic member so that the positioning block no longer presses tightly against the circuit board.

[0015] It is further provided that the aforementioned circuit board is provided with a positioning hole;

[0016] The positioning components are arranged in pairs, and the sliding directions of the positioning blocks of the same positioning component are opposite. The positioning blocks are provided with positioning convex parts, which are located in the receiving grooves and are used to cooperate with the positioning holes in a clearance.

[0017] When the flat plate and the circuit board are unlocked, the positioning protrusion is located in the positioning hole, or is opposite to the position of the positioning hole in the accommodating groove; when the flat plate and the circuit board are locked, the positioning protrusion moves toward the outside of the accommodating groove under the elastic force of the elastic member to press against the hole wall of the positioning hole and unfold the circuit board.

[0018] It is further arranged that the aforementioned positioning block is provided with a slot, the elastic member is located in the slot and is provided with two extended ends, the extended ends extend out of the slot and abut against the flat plate.

[0019] It is further provided that the aforementioned driving device comprises a push block and a driving member, the driving member is arranged on the base and connected to the push block, and the driving member is used to drive the push block to move;

[0020] When the leveling plate and the circuit board are unlocked, the driving member drives the push block to abut against the positioning block and overcomes the elastic force of the elastic member, so that the positioning block no longer abuts against the circuit board;

[0021] When the flattening plate and the circuit board are locked, the driving member drives the push block to no longer abut against the positioning block, and the positioning block is tightly pressed against the circuit board under the elastic force of the elastic member.

[0022] It is further configured that the aforementioned flattening plate is also provided with a sliding groove and a clearance opening, the sliding groove and the clearance opening are connected and extend in the same direction, the positioning block is slidably matched with the sliding groove, and the clearance opening is used for the push block to be inserted and slidably matched with the push block.

[0023] It is further provided that a plurality of first limiting blocks are provided on the aforementioned base, and the plurality of first limiting blocks are combined to form a positioning space for accommodating and positioning the flattening plate.

[0024] It is further configured that the circuit board welding jig also includes a cover plate, which is rotatably connected to the base and is used to close the positioning space.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, a circuit board welding jig provided by the utility model has the following beneficial effects:

[0027] When the circuit board welding jig provided by the utility model is in use, first, the flat plate is arranged on the base, and then the circuit board to be welded is placed into the accommodating groove. At this time, the flat plate and the circuit board are in an unlocked state. Then, the driving device is started to move away from the positioning block, so that the positioning block can be tightly abutted against the circuit board under the elastic force of the elastic member, thereby fixing the circuit board on the flat plate. At this time, the flat plate and the circuit board are in a locked state. Then, the flat plate can be removed from the base and placed on the soldering equipment, and the soldering equipment performs soldering operations on the circuit board on the flat plate. During the soldering process, the flat plate is beneficial to keep the circuit board flat all the time without warping, thereby ensuring the soldering quality of the circuit board. After the soldering is completed, the flat plate can be reset on the base, and then the driving device is started. The driving device drives the positioning block to move and overcomes the elastic force of the elastic member, so that the positioning block no longer tightly abuts against the circuit board. At this time, the flat plate and the circuit board return to the unlocked state again, and the soldered circuit board can be easily taken out of the accommodating groove, and the next circuit board to be welded can be replaced; it can be seen that the circuit board welding jig can fasten the circuit board in the accommodating groove of the flat plate through the positioning component, ensure that the circuit board will not fall out of the accommodating groove during the welding process, and can quickly disassemble and assemble the circuit board in combination with the driving device, replacing the screw connection fixation, thereby improving the overall production efficiency of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a perspective view of the circuit board welding jig without loading the circuit board in the embodiment;

[0029] Figure 2 It is a perspective view of the circuit board welding jig loading the circuit board in the embodiment;

[0030] Figure 3 It is a perspective view of the circuit board welding jig in the state where the cover plate is closed in the embodiment;

[0031] Figure 4 It is an exploded view of the circuit board welding jig in the embodiment;

[0032] Figure 5 For Figure 4 The enlarged schematic view of part A in

[0033] Figure 6 It is a cross-sectional view of the positioning block of the circuit board welding jig in the locked position in the embodiment;

[0034] Figure 7 It is a cross-sectional view of the positioning block of the circuit board welding jig in the unlocked position in the embodiment.

[0035] Reference numerals in the drawings:

[0036] 1. Base; 11. First limit block; 12. Positioning space; 13. Limit column; 14. Second limit block;

[0037] 2. Flat plate; 21. Accommodating groove; 22. Sliding groove; 23. Displacement opening; 24. Concave portion; 25. Welding opening;

[0038] 3. Positioning assembly; 31. Positioning block; 311. Positioning convex portion; 312. Slot; 32. Elastic member; 321. Extension end;

[0039] 4. driving device; 41. pushing block; 42. driving member;

[0040] 5. Cover plate;

[0041] 6. Circuit board; 61. Positioning hole. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by conventional technicians in this field without creative work are within the scope of protection of the utility model.

[0043] The utility model provides a circuit board welding jig, which is used to solve the problem of how to quickly disassemble and assemble a circuit board 6.

[0044] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, Figure 1 This is a three-dimensional diagram of the circuit board welding fixture in the embodiment without a circuit board loaded thereon. Figure 2 This is a three-dimensional diagram of a circuit board welding jig loaded with a circuit board in an embodiment. Figure 4 This is an exploded view of the circuit board welding fixture in the embodiment. Figure 5 for Figure 4 In the enlarged schematic diagram at point A, the circuit board welding fixture includes a base 1, a flat plate 2, a positioning component 3 and a driving device 4.

[0045] The flattening plate 2 is located on the base 1 and has a receiving groove 21 for receiving the circuit board 6 . The flattening plate 2 is conducive to keeping the circuit board 6 flat and not warping during the subsequent welding process, thereby ensuring the welding quality of the circuit board 6 .

[0046] The positioning assembly 3 includes a positioning block 31 and an elastic member 32. The positioning block 31 is slidably connected to the flat plate 2 through a guide rail or a slide groove. The elastic member 32 is located on the flat plate 2 and connected to the positioning block 31.

[0047] The driving device 4 is installed on the base 1 and is used to drive the positioning block 31 to move.

[0048] When the flat plate 2 and the circuit board 6 are locked, the elastic member 32 urges the positioning block 31 to tightly abut against the circuit board 6 to fix the circuit board 6 on the flat plate 2; when the flat plate 2 and the circuit board 6 are unlocked, the driving device overcomes the elastic force of the elastic member 32 to make the positioning block 31 no longer tightly abut against the circuit board 6.

[0049] When the circuit board welding jig provided by the above technical solution is in use, first, the flat plate 2 is arranged on the base 1, and then the circuit board 6 to be welded is placed into the receiving groove 21. At this time, the flat plate 2 and the circuit board 6 are in an unlocked state (in the unlocked state, the circuit board 6 can be easily taken out or put into the receiving groove 21). Then, the driving device 4 is started to move away from the positioning block 31, so that the positioning block 31 can tightly abut against the circuit board 6 under the action of the elastic force of the elastic member 32, thereby fixing the circuit board 6 on the flat plate 2. At this time, the flat plate 2 and the circuit board 6 are in a locked state (in the locked state, the circuit board 6 cannot be taken out or put into the receiving groove 21). Then, the flat plate 2 can be removed from the base 1 and placed on the soldering equipment, and the soldering equipment performs soldering operations on the circuit board 6 on the flat plate 2. During the soldering process, the flat plate 2 keeps the circuit board 6 flat all the time without warping to ensure the soldering quality of the circuit board 6. After the soldering is completed, the flat plate 2 can be reset on the base 1, and then the driving device 4 is started to drive the positioning block 31 to move and overcome the elastic force of the elastic member 32 to make the positioning block 31 no longer tightly abut against the circuit board 6. At this time, the flat plate 2 and the circuit board 6 return to the unlocked state again, and the soldered circuit board 6 can be easily taken out of the receiving groove 21, and the next circuit board 6 to be soldered can be replaced. It can be seen that the circuit board welding jig can fasten the circuit board 6 in the receiving groove 21 of the flat plate 2 through the positioning assembly 3 to ensure that the circuit board 6 will not come out of the receiving groove 21 during the soldering process, and combined with the driving device 4, the circuit board 6 (with the flat plate 2) can be quickly disassembled and assembled, replacing the screw connection fixation, thereby improving the overall production efficiency of the circuit board 6.

[0050] Refer to Figure 1 and Figure 4 As shown, the bottom of the above-mentioned receiving groove 21 has a plurality of welding interfaces 25 for exposing the positions to be soldered on the circuit board 6 so that the soldering equipment can perform soldering operations on the circuit board 6 on the flat plate 2.

[0051] The above-mentioned positioning component 3 can be one or more than one. If there is only one positioning component 3, the positioning component 3 can apply a pulling force or a pushing force to the circuit board 6 and cooperate with the groove wall of the receiving groove 21 to fix the circuit board 6, so as to fix the circuit board 6 and the flat plate 2. If there are more than one positioning component 3, the sliding directions of the positioning components 3 can be different, and they can be combined to apply a pulling force or a pushing force to the circuit board 6, cooperate with the groove wall of the receiving groove 21 to fix the circuit board 6, or the positioning components 3 can also cooperate with each other to fix the circuit board 6, so as to fix the circuit board 6 and the flat plate 2.

[0052] The above-mentioned flat plate 2 can be directly placed on the base 1 and its position can be restricted by a limiting structure, or it can be connected to the base 1 by a quick disassembly and assembly method such as snap connection.

[0053] Refer to Figure 2 As shown, in an implementation manner where the flat plate 2 is arranged on the base 1, a number of first limiting blocks 11 are fixed on the base 1 by welding or screwing, etc. A positioning space 12 for receiving and positioning the flat plate 2 is formed by combining the first limiting blocks 11. In this way, when using the circuit board welding jig, only by directly placing the flat plate 2 in the positioning space 12 of the base 1, the locking or unlocking operation of the flat plate 2 and the circuit board 6 can be carried out. Taking the flat plate 2 out of the positioning space 12 can place the flat plate 2 on the soldering equipment for soldering operations. The disassembly and assembly of the flat plate 2 and the base 1 are simple and fast, saving time, thus improving the overall production efficiency of the circuit board 6. In this embodiment, the flat plate 2 is a square plate, and there are four first limiting blocks 11, which are L-shaped and respectively cover the four corners of the flat plate 2.

[0054] Refer to Figure 1 、 Figure 2 and Figure 3 As shown, Figure 3 Fig. is a perspective view of the circuit board welding jig in the state where the cover plate is closed in the embodiment. On the basis of the above embodiment, the circuit board welding jig further includes a cover plate 5. The cover plate 5 is rotatably connected to the base 1 and is used to close the positioning space 12. In this way, the cover plate 5 has an open state and a closed state. When the cover plate 5 is in the open state, the receiving groove 21 can be exposed so as to take out or put the circuit board 6 into the receiving groove 21. When the cover plate 5 is in the closed state, it can close the positioning space 12, limit the flat plate 2 in the positioning space 12, and can also prevent the positioning component 3 from ejecting to the operator during the locking or unlocking process and causing harm to the operator.

[0055] Refer to Figure 2As shown, on the basis of the above embodiment, a plurality of limit columns 13 can be fixed on the base 1 by welding or screwing. When the leveling plate 2 is placed in the positioning space 12, the limit columns 13 penetrate the leveling plate 2, thereby assisting the first limit block 11 to further position the leveling plate 2.

[0056] See also Figure 2 As shown, in one embodiment of the base 1, a second limit block 14 is also fixed to the base 1 by welding or screwing. When the cover plate 5 is in the closed state, it abuts against the second limit block 14, thereby closing the accommodating groove 21 and not directly contacting the flat plate 2 and the circuit board 6 thereon, effectively preventing the cover plate 5 from wearing the circuit board 6 during the closing process.

[0057] See also Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, Figure 6 This is a cross-sectional view of the positioning block of the circuit board welding fixture in the embodiment in the locked position. Figure 7 It is a cross-sectional view of the positioning block of the circuit board welding jig in the embodiment in the unlocked position. In one embodiment of the positioning assembly 3, the positioning assemblies 3 are grouped in pairs, and the sliding directions of the positioning blocks 31 of the same group of positioning assemblies 3 are opposite. A positioning protrusion 311 is fixed to the positioning block 31 by means of integral connection or bonding, and the edge of the circuit board 6 has a positioning hole 61. The positioning protrusion 311 is located in the receiving groove 21 and is used to fit with the positioning hole 61 in a clearance. Among them, when the flattening plate 2 and the circuit board 6 are unlocked, the positioning protrusion 311 is located in the positioning hole 61, or the positioning protrusion 311 is opposite to the position of the positioning hole 61 in the receiving groove 21; when the flattening plate 2 and the circuit board 6 are locked, the positioning protrusion 311 moves toward the outside of the receiving groove 21 under the elastic force of the elastic member 32, so as to press against the hole wall of the positioning hole 61 and unfold the circuit board 6. In this way, when the flattening plate 2 and the circuit board 6 are in an unlocked state, such as Figure 7 As shown, the positioning block 31 is opposite to the positioning hole 61, does not interfere with the circuit board 6, and does not press against the hole wall of the positioning hole 61, so that the circuit board 6 can be easily taken out or put into the receiving groove 21; on the contrary, when the flat plate 2 and the circuit board 6 are in a locked state, the positioning block 31 moves toward the outside of the receiving groove 21 under the elastic force of the elastic member 32. If the circuit board 6 is not in the receiving groove 21, the positioning protrusion 311 and the positioning hole 61 in the receiving groove 21 are offset, as shown in FIG. Figure 6As shown, it interferes with the circuit board 6 to be subsequently placed in the receiving groove 21, preventing the positioning convex portion 311 from being inserted into the positioning hole 61 of the circuit board 6, so that the circuit board 6 cannot be placed in the receiving groove 21. If the circuit board 6 is in the receiving groove 21, the positioning convex portion 311 abuts against the hole wall of the positioning hole 61, and applies a pulling force towards the outside of the receiving groove 21 to the positioning hole 61 of the circuit board 6, thereby fastening the circuit board 6 in the receiving groove 21 and pulling the edge of the circuit board 6 to extend and open outwards, further ensuring the flatness of the circuit board 6.

[0058] In this embodiment, the number of the positioning components 3 is four, and they are paired in two, applying pulling forces with opposite directions and the same magnitude to both sides of the circuit board 6, so as to cooperate with each other to fix the circuit board 6 and pull both sides of the circuit board 6 to extend and open outwards.

[0059] Refer to Figure 5 、 Figure 6 and Figure 7 As shown, in an embodiment of the positioning component 3, the positioning block 31 has a slot 312, the elastic member 32 is located in the slot 312 and has two extended ends 321. The extended ends 321 extend out of the slot 312 and abut against the flat plate 2. In this way, when the driving device 4 drives the positioning block 31 to move, the positioning block 31 pulls the main body of the elastic member 32 to displace through the slot 312, and makes the extended ends 321 of the elastic member 32 abut tightly against the flat plate 2, so that the elastic member 32 is elastically deformed and has an elastic force to drive the positioning block 31 to return to its original position.

[0060] The above elastic member 32 can use springs such as compression springs, tension springs or torsion springs.

[0061] Refer to Figure 6 and Figure 7As shown, in an embodiment of the driving device 4, the driving device 4 includes a push block 41 and a driving member 42. The driving member 42 is installed on the base 1 by screwing or welding or other means. The output end of the driving member 42 is connected to the push block 41 by screwing or welding or other means. The driving member 42 is used to drive the push block 41 to move. Among them, when the flat plate 2 and the circuit board 6 are unlocked, the driving member 42 drives the push block 41 to abut against the positioning block 31, and pushes the positioning block 31 to overcome the elastic force of the elastic member 32, so that the positioning block 31 no longer tightly abuts against the circuit board 6; when the flat plate 2 and the circuit board 6 are locked, the driving member 42 drives the push block 41 to no longer abut against the positioning block 31 (removing the external force applied to the positioning block 31), and the positioning block 31 tightly abuts against the circuit board 6 under the elastic force of the elastic member 32. In this way, when the circuit board welding jig is used, the flat plate 2 is arranged on the base 1, and the positioning block 31 can automatically be located on the moving path of the push block 41 without additionally connecting the push block 41 and the positioning block 31. The circuit board welding jig can switch between the locked state and the unlocked state through the driving device 4 and the positioning component 3. Before removing the flat plate 2 from the base 1, it is not necessary to additionally disassemble the push block 41 and the positioning block 31. In summary, during the process of locking and unlocking the flat plate 2 and the circuit board 6 of the circuit board welding jig, it is not necessary to additionally disassemble and connect the push block 41 and the positioning block 31, which can further simplify the operation of locking and unlocking the flat plate 2 and the circuit board 6, and thus further save the time for locking and unlocking the flat plate 2 and the circuit board 6.

[0062] The above-mentioned driving member 42 can use existing telescopic pushing members such as cylinders.

[0063] On the basis of the above embodiment, a control device such as a button or a knob can also be installed on the base 1 so that the staff can control the driving member 42 to drive the push block 41 to reciprocate.

[0064] Refer to Figure 5 、 Figure 6 and Figure 7 As shown, in an embodiment of the flat plate 2, the flat plate 2 further has a sliding groove 22 and a relief opening 23. The relief opening 23 communicates with the sliding groove 22 and has the same extending direction. The positioning block 31 is slidably engaged with the sliding groove 22. The relief opening 23 is used for the push block 41 to be inserted and is slidably engaged with the push block 41. In this way, during the movement of the push block 41, it can abut against the positioning block 31 in the relief opening 23 or the sliding groove 22, so as to be able to push the positioning block 31 to slide along the sliding groove 22, and the relief opening 23 and the sliding groove 22 can also limit the sliding paths of the push block 41 and the positioning block 31 to be on the same straight line or the extension line of the same straight line.

[0065] Refer to Figure 2 As shown, in an embodiment of the flat plate 2, there is a recess 24 at the notch of the receiving groove 21, which is convenient for taking out and putting in the circuit board 6 in the receiving groove 21.

[0066] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A circuit board welding jig, characterized in that: include: Base; A flat plate, arranged on the base, and provided with a receiving groove for receiving the circuit board; A positioning assembly, comprising a positioning block and an elastic member, wherein the positioning block is slidably disposed on the flat plate, and the elastic member is disposed on the flat plate and connected to the positioning block; A driving device, disposed on the base and used to drive the positioning block to move; Wherein, when the flat plate and the circuit board are locked, the elastic member drives the positioning block to press against the circuit board, so as to fix the circuit board on the flat plate; When the leveling plate and the circuit board are unlocked, the driving device overcomes the elastic force of the elastic member so that the positioning block no longer presses against the circuit board.

2. A circuit board welding jig according to claim 1, characterized in that: The circuit board is provided with positioning holes; The positioning components are arranged in groups of two, and the positioning blocks of the positioning components in the same group slide in opposite directions. The positioning blocks are provided with positioning protrusions, and the positioning protrusions are located in the receiving grooves and are used to cooperate with the positioning holes in a clearance. Wherein, when the flat plate and the circuit board are unlocked, the positioning protrusion is located in the positioning hole, or is opposite to the position of the positioning hole in the accommodating groove; when the flat plate and the circuit board are locked, the positioning protrusion moves toward the outside of the accommodating groove under the elastic force of the elastic member to press against the hole wall of the positioning hole and unfold the circuit board.

3. A circuit board welding jig according to claim 2, characterized in that: The positioning block is provided with a slot; the elastic member is located in the slot and is provided with two extended ends, the extended ends extend out of the slot and abut against the flat plate.

4. A circuit board welding jig according to claim 1, characterized in that: The driving device comprises a push block and a driving member, wherein the driving member is arranged on the base and connected to the push block, and the driving member is used to drive the push block to move; When the leveling plate and the circuit board are unlocked, the driving member drives the pushing block to abut against the positioning block and overcomes the elastic force of the elastic member, so that the positioning block no longer abuts against the circuit board; When the flattening plate and the circuit board are locked, the driving member drives the pushing block to no longer abut against the positioning block, and the positioning block is pressed tightly against the circuit board under the elastic force of the elastic member.

5. A circuit board welding jig according to claim 4, characterized in that: The flattening plate is also provided with a sliding groove and a clearance opening, the sliding groove and the clearance opening are connected and extend in the same direction, the positioning block is slidably matched with the sliding groove, and the clearance opening is used for the push block to be inserted and slidably matched with the push block.

6. A circuit board welding jig according to claim 1, characterized in that: The base is provided with a plurality of first limiting blocks, which are combined to form a positioning space for accommodating and positioning the flat plate.

7. A circuit board welding jig according to claim 6, characterized in that: It also includes a cover plate, which is rotatably connected to the base and is used to close the positioning space.

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