Jig for circuit board

Abstract

The utility model provides a jig for a circuit board. The jig comprises a base plate, the base plate comprises a guide part and a clamping part which are opposite, at least one through hole is formed in the clamping part, and the through hole is provided with a connecting edge close to the guide part; each clamping head is contained in the through hole and fixedly connected with the connecting edge, each clamping head is configured to be capable of rotating by a preset angle around the connecting edge in the direction away from the clamping part, and a clamping area is defined by the clamping head and the clamping part. According to the technical scheme, the problem that in the prior art, the circuit board is damaged due to the board clamping phenomenon in the production process of the circuit board is solved.

Description

Technical Field

[0001] The utility model relates to the field of semiconductor production, and specifically provides a fixture for a circuit board. Background Art

[0002] With the development of miniaturization and thinness of mobile electronic devices, the thickness of finished circuit boards has gradually decreased, and the thickness of semi-finished products in the production process has reached less than 50 microns. At present, the various process production lines of circuit boards can be divided into vertical and horizontal types according to the transportation method of circuit boards.

[0003] A vertical production line means that the circuit board is fixed in a frame-type fixture, and both the circuit board and the fixture move forward perpendicular to the horizontal plane. A horizontal production line means that the circuit board is placed on horizontal rollers and transported forward by the rotation of the rollers.

[0004] For circuit boards with lower thickness, the problem of board jamming often occurs during the horizontal production process. Board jamming means that when a circuit board passes through two adjacent sets of rollers, due to gravity or water flow, the forward side of the circuit board hits the roller, causing the board to break, break, or the roller to deform. Chinese utility model patent CN202321411952.3 discloses a PCB electroplated sheet transfer device, which prevents the forward side of the thin plate from entering between the rollers and causing jamming by installing a horizontal fixed plate in the gap between the rollers, and adds an inclined blowing device to prevent the thin plate from being adsorbed on the fixed plate.

[0005] However, this device inevitably requires the replacement, modification and installation of other accessories of the existing horizontal roller conveyor mechanism, which will inevitably cause a period of production suspension, resulting in a reduction in the factory's production capacity and output value. In addition, for horizontal lines that require the use of liquid medicine for chemical reactions, adding a horizontal fixed plate between the rollers will affect the circulation of the liquid medicine, resulting in the circuit board being unable to fully react chemically with the liquid medicine.

[0006] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0007] In order to solve the problem of circuit board damage caused by the stuck board phenomenon in the production process of circuit boards in the prior art, the utility model provides a jig for circuit boards. The jig of the utility model comprises: a base plate, the base plate comprises a relative guide portion and a clamping portion, at least one through hole is provided on the clamping portion, and the through hole has a connecting edge close to the guide portion; and at least one clamp head, each of which is accommodated in the through hole and forms a fixed connection with the connecting edge, and each of which is configured to be able to rotate around the connecting edge in a predetermined angle in a direction away from the clamping portion, and together with the clamping portion, form a clamping area.

[0008] The utility model adopts a substrate and a chuck to clamp the circuit board, so that the fixture of the utility model can be directly applied to the existing horizontal production line, and the implementation cost is low. The substrate includes a relative guide part and a clamping part. When the fixture is in a working state, the guide part and the clamping part are configured so that the guide part is in front and the clamping part is in the back along the forward direction of the production line. In this way, when the fixture and the circuit board move forward synchronously, the guide part will first contact the roller to avoid the circuit board from getting stuck. At least one through hole is provided on the clamping part, and the through hole has a connecting edge close to the guide part. Each chuck is accommodated in the through hole and forms a fixed connection with the connecting edge. Through the above configuration, when the chuck is tilted along the connecting edge, the opening of the area clamped by the chuck and the clamping part is roughly toward the side where the clamping part of the substrate is located, so as to produce a dragging effect on the circuit board during the advancement of the fixture. Each clamp can be rotated around the connecting edge at a predetermined angle in a direction away from the clamping portion, and together with the clamping portion, form a clamping area, so that one side of the circuit board can extend into the clamping area, and the two sides are clamped by the clamp and the clamping portion to prevent the circuit board from detaching from the fixture during movement.

[0009] In the preferred technical solution of the jig for circuit boards, the base plate and the clamp are integrally processed from the same plate-like member. Through the above configuration, the clamping area formed by the clamp and the clamping portion has a strong holding force by utilizing the stress generated by the deformation of the material of the jig itself, and the production cost of the jig integrally formed from the same plate is low.

[0010] In the above preferred technical solution of the jig for circuit boards, the plate-shaped component. Through the above configuration, the metal plate-shaped component not only prevents the jig from being corroded by chemicals in the production line, but also enhances the clamping force between the clamp head and the clamping part.

[0011] In the preferred technical solution of the jig for circuit boards, the thickness of the plate-like member is 1.7 mm to 3 mm. Through the above configuration, both the base plate and the chuck have a certain hardness, which prevents the guide part from being greatly deformed when contacting the roller on the horizontal production line, causing the jig to jam; on the other hand, it ensures the clamping force between the chuck and the clamping part.

[0012] In the preferred technical solution of the jig for circuit boards, a predetermined gap is formed between the clamp and the through hole, the connecting edge has two opposite ends, and the predetermined gap extends between the two ends. Through the above arrangement, the existence of the predetermined gap ensures that the clamp and the clamping portion can be separated from each other to achieve a clamping effect.

[0013] In the preferred technical solution of the jig for circuit boards, there are multiple through holes, and the connecting edges of each through hole extend in the same direction. Each connecting edge is configured to extend in the same direction, so that after the circuit board is inserted into the clamping area formed by the clamping head and the clamping portion, the deformation degree of each clamp is roughly the same, thereby generating roughly the same clamping force, thereby improving the clamping effect of the jig.

[0014] In the preferred technical solution of the jig for circuit boards, a first liquid flow hole is also provided on the clamping portion, and the first liquid flow hole is provided between the through holes adjacent to each other. Through the above configuration, the portion of the circuit board covered by the clamping portion can also be fully in contact with the liquid medicine, and the liquid after the reaction is completed can be discharged from the through hole and the first liquid flow hole.

[0015] In the preferred technical solution of the jig for circuit boards, a second liquid flow hole is provided on the chuck and passes through the chuck. Through the above configuration, the portion of the circuit board covered by the chuck can also be fully in contact with the liquid medicine, and the liquid after the reaction is completed can also be discharged from the second liquid flow hole.

[0016] In the preferred technical solution of the above-mentioned jig for circuit boards, the shape of the clamp is configured as a rectangle, a semicircle or a trapezoid. Through the above-mentioned configuration, the jig can be conveniently clamped on the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the jig for circuit boards of the utility model;

[0019] Figure 2 yes Figure 1 A detailed schematic diagram of an embodiment of a jig for a circuit board is shown at A;

[0020] Figure 3 It is a schematic diagram of the back side of an embodiment of the jig for circuit boards of the utility model in a working state;

[0021] Figure 4 yes Figure 3 A cross-sectional view of an embodiment of a jig for a circuit board shown at position BB;

[0022] Figure 5 It is a front schematic diagram of an embodiment of the jig for circuit boards of the utility model in a working state.

[0023] List of reference numerals:

[0024] 100, fixture; 10, substrate; 11, guide portion; 12, clamping portion; 121, through hole; 1211, connecting edge; 122, first liquid flow hole; 20, chuck; 21, second liquid flow hole; 30, clamping area; 40, predetermined gap. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that, in the description of the present invention, the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In order to solve the problem of circuit board damage caused by the stuck board phenomenon in the production process of circuit boards in the prior art, the utility model provides a jig 100 for circuit boards. The jig 100 of the utility model includes: a substrate 10, the substrate 10 includes a relative guide portion 11 and a clamping portion 12, at least one through hole 121 is provided on the clamping portion 12, and the through hole 121 has a connecting edge 1211 close to the guide portion 11; and at least one clamp 20, each clamp 20 is accommodated in the through hole 121 and is fixedly connected with the connecting edge 1211, and each clamp 20 is configured to be able to rotate around the connecting edge 1211 in a predetermined angle in a direction away from the clamping portion 12, and together with the clamping portion 12, a clamping area 30 is enclosed.

[0029] Figure 1 This is a schematic diagram of the structure of the fixture for circuit boards of the utility model. Figure 1 As shown, in one or more embodiments, the jig 100 for a circuit board of the present invention comprises a substrate 10 and seven clamps 20. Alternatively, the clamps 20 may be configured to be less than 7 or more than 7, for example, 1, 3, 8, etc., according to the size of the circuit board that the jig 100 actually needs to clamp.

[0030] Continue reading Figure 1, the substrate 10 includes a relative guide portion 11 and a clamping portion 12. In one or more embodiments, the substrate 10 is configured in a substantially rectangular shape, and based on the orientation shown in the figure, the clamping portion 12 is on the "upper" side and the guide portion 11 is on the "lower" side. Alternatively, the substrate 10 may also be configured in other suitable shapes, and it is only necessary to ensure that the guide portion 11 and the clamping portion 12 are respectively on opposite sides of the substrate 10, so that the guide portion 11 contacts the roller transmission mechanism in front of the production line movement direction, and the clamping portion 12 clamps the circuit board in the rear of the movement direction.

[0031] Figure 2 yes Figure 1 A detailed schematic diagram of an embodiment of a jig for a circuit board is shown at A; Figure 3 FIG. 1 is a schematic diagram of the back side of the embodiment of the jig for circuit boards of the utility model in working state. Figure 1 As shown, in one or more embodiments, seven through holes 121 are provided on the clamping portion 12. Alternatively, the through holes 121 may be provided in other suitable numbers less than or more than 7, such as 1, 3, 8, etc. When the number of through holes 121 is less than the number of clamps 20, multiple clamps 20 may be accommodated in the same through hole 121. Figure 2 As shown, in one or more embodiments, each through hole 121 is configured to be roughly rectangular. Each through hole 121 has a connecting edge 1211 close to the guide portion 11. In the present embodiment, the connecting edge 1211 is the bottommost edge of the rectangular through hole 121. Alternatively, the shape of the through hole 121 can also be set to other suitable shapes, such as a semicircle, an arcuate shape, etc., and the diameter of the semicircle / the chord of the arcuate shape is configured to be close to the guide portion 11. In one or more embodiments, when the number of through holes 121 is multiple, there are also multiple connecting edges 1211 accordingly, and these connecting edges 1211 are arranged to extend in the same direction, that is, these connecting edges 1211 are roughly located on the same straight line. Alternatively, the multiple connecting edges 1211 can also be arranged to extend in different directions from each other, so as to facilitate the use of the same fixture 100 to match circuit boards of various shapes and sizes.

[0032] Continue reading Figure 1 In one or more embodiments, when there are two or more through holes 121, first liquid flow holes 122 are provided between adjacent through holes 121, and each first liquid flow hole 122 penetrates the clamping portion 12. Alternatively, the first liquid flow holes 122 may be omitted. Figure 2 As shown, the number of first liquid flow holes 122 between adjacent through holes 121 can be set to 1, 2 or other suitable numbers. The shape of the first liquid flow holes 122 includes but is not limited to circular, rectangular and slit. The processing methods of the first liquid flow holes 122 include but are not limited to milling and stamping. Figure 3As shown, after the fixture 100 and the circuit board are installed together, the first liquid flow hole 122 and the through hole 121 are set, and the liquid medicine can also flow freely at the place clamped by the fixture 100 on the back of the circuit board to participate in the chemical reaction. Alternatively, the setting of the first liquid flow hole 122 can also be eliminated.

[0033] Figure 4 yes Figure 3 The embodiment of the jig for circuit boards shown in FIG. Figure 2 and Figure 4 As shown, the clamp 20 is fixedly connected to the connecting edge 1211, and the clamp 20 can rotate around the connecting edge 1211 by a predetermined angle in a direction away from the clamping portion 12. After the clamp 20 rotates by a predetermined angle, it forms a clamping area 30 together with the clamping portion 12, and one side of the circuit board can be clamped by placing it in the clamping area 30. The predetermined angle can be configured to different values ​​according to the thickness of the circuit board assembled with the fixture 100. The thicker the circuit board, the larger the predetermined angle of rotation of the clamp 20 around the connecting edge 1211.

[0034] In one or more embodiments, the base plate 10 and the chuck 20 are integrally formed from the same plate-like component. For example, the base plate 10 and the chuck 20 are formed on the plate-like component by milling or stamping. Figure 2 As shown, the chuck 20 is accommodated in the through hole 121 of the clamping portion 12, and a predetermined gap 40 is formed between the chuck 20 and the through hole 121. The predetermined gap 40 extends from one end of the connecting edge 1211 to the other end opposite to the connecting edge 1211. The shape of the predetermined gap 40 depends on the shape of the through hole and the shape of the chuck. For example, when the through hole and the chuck are both arranged in matching rectangles, the predetermined gap 40 can be obtained by milling or stamping to remove the material originally located at the predetermined gap 40 on the plate-like member, so as to separate the chuck 20 and the clamping portion 12 to form the clamping area 30. After the predetermined gap 40 is processed, the chuck 20 is accommodated in the through hole 121 and one side of the chuck 20 is also fixedly connected to the connecting edge 1211.

[0035] The plate-like member includes but is not limited to metal plates such as copper-clad plates and stainless steel. It is understood by those skilled in the art that the forming method of the fixture 100 of the utility model is not limited to milling or stamping the same plate, and other suitable methods can also be used to form the substrate 10 and the chuck 20 together, such as casting.

[0036] In one or more embodiments, the thickness of the plate-like member is configured to be between 1.7 mm and 3 mm. Alternatively, the plate-like member used for forming the substrate 10 and the chuck 20 can be configured to have other suitable thicknesses according to the actual impact conditions when the roller mechanism on the production line contacts the fixture 100.

[0037] It should be noted that when the substrate 10 and the chuck 20 are fixed together by integral molding, at least a portion of the connecting edge 1211 has no clear boundary. In this case, the deformation on the substrate 10 caused by the lifting of one side of the chuck 20 can be identified as the connecting edge 1211.

[0038] In alternative embodiments, the substrate 10 and the clamp 20 may also be fixed together in other suitable ways to achieve the effect of generating a clamping force to clamp the circuit board.

[0039] Continue reading Figure 2 , the chuck 20 is accommodated in the through hole 121. In one or more embodiments, the shape of the chuck 20 is set to be a rectangle or other suitable shape matching the through hole 121, such as a semicircle, a trapezoid, etc., so as to be accommodated in the through hole 121. Alternatively, the shape of the chuck 20 can also be configured to be different from the shape of the through hole 121, for example, the through hole 121 is set to be a substantially rectangular shape and the chuck 20 is set to be a substantially trapezoidal shape.

[0040] Figure 5 2 is a front view of an embodiment of the jig for circuit boards of the utility model in a working state. In one or more embodiments, a second liquid flow hole 21 is provided on the chuck 20, and each second liquid flow hole 21 passes through the chuck 20. Figure 5 As shown, after the fixture 100 and the circuit board are installed together, the second liquid flow hole 21 is set, and the liquid medicine can also flow freely at the position of the front of the circuit board clamped by the fixture 100 to participate in the chemical reaction. Alternatively, the second liquid flow hole 21 can also be eliminated.

[0041] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A jig for a circuit board, characterized in that: The fixtures include: A substrate, the substrate comprising a guide portion and a clamping portion opposite to each other, the clamping portion being provided with at least one through hole, the through hole having a connecting edge close to the guide portion; and At least one clamp, each clamp is accommodated in the through hole and forms a fixed connection with the connecting edge, each clamp is configured to be able to rotate around the connecting edge in a direction away from the clamping portion by a predetermined angle, and together with the clamping portion, forms a clamping area.

2. The jig for a circuit board according to claim 1, characterized in that: The base plate and the chuck are integrally manufactured from the same plate-like member.

3. The jig for a circuit board according to claim 2, characterized in that: A predetermined gap is formed between the clamp and the through hole, and the connecting edge has two opposite ends, and the predetermined gap extends between the two ends.

4. The jig for a circuit board according to claim 2, characterized in that: The plate-shaped component is a copper-clad plate or a stainless steel plate.

5. The jig for a circuit board according to claim 2, characterized in that: The thickness of the plate-like member is configured to be 1.7 mm-3 mm.

6. The jig for a circuit board according to any one of claims 1 to 5, characterized in that: There are multiple through holes, and the connecting edges of each through hole extend along the same direction.

7. The jig for a circuit board according to claim 6, characterized in that: The clamping portion is also provided with a first liquid flow hole, and the first liquid flow hole is arranged between the through holes adjacent to each other.

8. The jig for a circuit board according to any one of claims 1 to 5, characterized in that: The chuck is provided with a second liquid flow hole penetrating through the chuck.

9. The jig for a circuit board according to any one of claims 1 to 5, characterized in that: The shape of the clamp is configured to be rectangular, semicircular or trapezoidal.

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