Auxiliary fixture for PCB electroplating

Abstract

The present application relates to the technical field of fixtures for PCB electroplating, and in particular to an auxiliary fixture for PCB electroplating, which solves the problem of adding a lot of extra costs by eliminating the electroplating edge effect at the edge of the circuit board through copper strips during electroplating. The auxiliary fixture for PCB electroplating includes a connecting mechanism for connecting a flybar and a first angle plate connected to the bottom of the connecting mechanism, and the first angle plate is made of insulating material. The present application protects the edge of the circuit board by insulating material to eliminate the electroplating edge effect, and the insulating material can be reused, which has the effect of saving costs.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures for PCB electroplating, and in particular to an auxiliary fixture for PCB electroplating. Background Art

[0002] Electroplating is a method of applying a layer of metal to a conductor using the principle of electrolysis. The purpose is to plate a metal coating on the substrate to change the surface properties or size of the substrate. During electroplating, the plating metal or other insoluble material acts as the anode, and the workpiece to be plated acts as the cathode. The cations of the plating metal are reduced on the surface of the workpiece to be plated to form a coating. In order to eliminate the interference of other cations and make the coating uniform and firm, a solution containing the plating metal cations is required as the electroplating solution to keep the concentration of the plating metal cations unchanged.

[0003] With the development of electroplating technology, electroplating process has been increasingly applied in PCB production. In the circuit board manufacturing process, many processes require electroplating of the circuit board to form a uniform thickness of electroplating layer on the surface of the circuit board. At present, during electroplating, the circuit board is generally fixed in a special hanger, and then the hanger with the circuit board is placed in the electroplating solution, and the electroplating is realized by using electric current.

[0004] In the Chinese invention patent with the authorization announcement number CN210001953U, a high-efficiency PCB electroplating fixture device is disclosed, which includes a flying bar and a plurality of first electroplating fixtures and a second electroplating fixture installed on the flying bar; the first electroplating fixture and the second electroplating fixture both include a fixed frame and a pressing rod, a movable clamp and a connecting rod installed on the fixed frame; a fixed plate is arranged on one side of the fixed frame, the movable clamp and the fixed plate are arranged oppositely, the pressing rod is pivotally connected to the movable clamp and the fixed plate, and the connecting rod is movably connected to the movable clamp and the fixed plate; the pressing rod and the movable clamp of the first electroplating fixture are arranged on the opposite side of the fixed plate, and the pressing rod and the movable clamp of the second electroplating fixture are arranged on the fixed plate away from the fixed frame. The present invention sets a plurality of symmetrical electroplating fixtures, so that the same group of flying bars can hang a group of PCB boards on both sides for vertical electroplating processing, thereby doubling the electroplating output on the basis of the original production, greatly improving the production efficiency.

[0005] The tracks of positive and negative ions moving in a directional manner under the action of an external electric field in the electroplating solution are generally called lines of force, and the edges of both sides of the circuit board often gather more lines of force, resulting in a tip effect. The tip effect is also called the edge effect, which refers to the phenomenon that on the same charged conductor, compared with the smooth part, the surface charge density at the tip is larger, the electric field strength near the tip is stronger, and it is easy to discharge from the tip to the surrounding. In electroplating, the tip effect will make the edge of the coating thicker, grow burrs or burn, resulting in uneven distribution of the coating thickness on the circuit board and poor electroplating quality. Summary of the invention

[0006] In order to solve the problem of increasing a lot of extra costs by eliminating the electroplating edge effect at the edge of the circuit board through copper strips during electroplating, the present application provides an auxiliary fixture for PCB electroplating.

[0007] The auxiliary fixture for PCB electroplating provided in this application adopts the following technical solution:

[0008] An auxiliary fixture for PCB electroplating comprises a connecting mechanism for connecting a femtobar and a first angle plate connected to the bottom of the connecting mechanism, wherein the first angle plate is made of insulating material.

[0009] By adopting the above technical scheme, when the PCB board is electroplated, the first angle plate is hung on the flying bar through the connecting mechanism, and each PCB board corresponds to two groups of first angle plates. The openings of the two first angle plates are arranged relatively to each other, so that the edges on both sides of the PCB board are respectively located between the two first angle plates and fit with the two first angle plates. Since the first angle plates are made of insulating material, the current at the edges on both sides of the PCB board can be isolated, thereby reducing the possibility of thickening, burr growth or burning of the coating edge due to excessive current concentration at the edge of the PCB board, making the coating thickness more uniform, and improving the qualified rate of PCB board products. In addition, the first angle plates can be reused, which can save a lot of material costs compared to the method of using copper bars or copper plates to consume the current at the edge of the PCB board, and can also avoid the consumption of coating metal in the plating solution caused by the coating on the surface of the copper bar.

[0010] Preferably, a first clamping plate is provided on the inner side of the first angle plate, and a first clamping groove for fixing the PCB is provided on the side of the first clamping plate.

[0011] By adopting the above technical solution, the side of the PCB board is installed in the first clamping groove during electroplating. The first clamping groove can limit the PCB board to prevent the PCB board from shaking during the electroplating process and affecting the quality of the surface coating, which is beneficial to improving the yield rate of PCB electroplating.

[0012] Preferably, a second angle plate is provided on the inner side of the first angle plate, the second angle plate is made of insulating material, the outer wall of the second angle plate is in contact with the inner wall of the first angle plate, the first clamping plates are provided at both ends of the inner side of the first angle plate, the second angle plate is slidably passed through the first clamping plate away from the connecting mechanism, the second clamping plate is provided on the inner side of the second angle plate, and the second clamping plate is located between the two first clamping plates.

[0013] By adopting the above technical solution, the setting of the second angle plate makes it easy to lengthen the length of the first angle plate according to the specifications of the PCB board, so as to adapt to different types of PCB boards. The second clamping plate can limit the second angle plate to prevent the second clamping plate from detaching from the first clamping plate.

[0014] Preferably, second clamping plates are provided at both ends of the inner side of the second angle plate, the second clamping plate at the top end of the second angle plate is located between the two first clamping plates, the second clamping plate at the bottom end of the second angle plate is located below the two first clamping plates, and the side of the second clamping plate is provided with a second clamping groove for fixing the PCB board.

[0015] By adopting the above technical solution, the second clamping groove is used to limit the PCB board, which increases the limiting points of the PCB board, thereby improving the limiting effect on the PCB board, which is beneficial to improving the electroplating quality.

[0016] Preferably, first baffles are provided on both sides of the first angle plate, and the two ends of the first baffle are respectively connected to the two first clamping plates; second baffles are provided on both sides of the second angle plate, and the two ends of the second baffle are respectively connected to the two second clamping plates; the first baffle is parallel to the second baffle and slides together.

[0017] By adopting the above technical solution, the arrangement of the first baffle plate and the second baffle plate can improve the isolation effect of the current, and can also improve the structural strength of the first angle plate and the second angle plate.

[0018] Preferably, a connecting rod is connected between the first angle plate and the connecting mechanism, and two ends of the connecting rod are detachably connected to the connecting mechanism and the first angle plate respectively.

[0019] By adopting the above technical solution, the detachable connection between the connecting mechanism and the first angle plate is easy to disassemble and assemble, and it is convenient to replace the first angle plate according to usage requirements.

[0020] Preferably, the connecting mechanism includes a connecting plate connected to the connecting rod at one end, an upper clamp arranged on the connecting plate away from one end of the connecting rod, a slide groove opened on the side wall of the connecting plate, and a lower clamp passed through the slide groove, and a clamping assembly for controlling the upper and lower sliding of the lower clamp is arranged on the side wall of the connecting plate.

[0021] By adopting the above technical solution, during installation, the clamping assembly is used to control the lower clamp to slide downward, and then the connecting plate is attached to the flying bar and the upper clamp is hung on the flying bar. Then, the clamping assembly is used to control the lower clamp to slide upward, so that the upper clamp and the lower clamp cooperate to clamp the flying bar to complete the installation.

[0022] Preferably, the clamping assembly includes a base plate arranged on the side wall of the connecting plate and located above the slide slot, a positioning ring arranged on the base plate near one end of the slide slot, a sliding rod slidably passed through the positioning ring, a fixing plate arranged on the connecting plate near one end of the connecting rod, and a compression spring connected between the fixing plate and the lower clamping piece, the end of the sliding rod away from the positioning ring is fixedly connected to the lower clamping piece, the end of the base plate away from the positioning ring is provided with a mounting plate, a rotating part is rotatably connected to the mounting plate, the end of the sliding rod away from the lower clamping piece is rotatably connected to a connecting plate, and the end of the connecting plate away from the sliding rod is rotatably connected to the rotating part.

[0023] By adopting the above technical solution, the rotating part is rotated downward during installation, and the connecting piece moves downward to drive the sliding rod to slide downward, and the sliding rod drives the lower clamping piece to slide downward and compress the compression spring, and then the upper clamping piece is hung on the flying bar, and the rotating part is released. The compression spring restores a certain degree of deformation to make the lower clamping piece press against the bottom of the flying bar. At this time, the compression spring is still in a compressed state, and the elastic force of the compression spring makes the upper clamping piece and the lower clamping piece clamp the flying bar. The clamp is fixedly installed on the flying bar through the clamping assembly, which can save a lot of manpower and time during disassembly and assembly, and is convenient for disassembly and assembly. It is also convenient to adjust the position of the clamp according to processing requirements, and it is convenient to protect the PCB board.

[0024] Preferably, limiting grooves are provided on both sides of the lower clamping piece, and the side edges of the sliding groove are embedded in the limiting grooves and slidably matched with the limiting grooves.

[0025] By adopting the above technical solution, the setting of the limit groove can limit the movement trajectory of the lower clamp when it slides up and down, so that the lower clamp keeps moving in the vertical direction, preventing the lower clamp from deviating when sliding up and down, and avoiding inconvenience in the installation of the clamp.

[0026] Preferably, a translation assembly is connected between the connecting rod and the first angle plate, and the translation assembly includes a translation plate detachably connected to one end of the first angle plate close to the connecting rod, a translation groove provided on the side wall of the translation plate, a translation block connected to one end of the connecting rod away from the connecting mechanism, a limit plate vertically connected to both sides of the translation block, a rotation axis horizontally rotatably penetrated by the two limit plates, and a positioning block provided between the two limit plates, a groove is provided at the bottom of the translation block, the top of the translation plate is slidably matched with the groove, the rotation axis and The positioning blocks are all located in the translation grooves and the rotating shaft is located below the positioning blocks. A waist-shaped block is fixedly sleeved on the rotating shaft. The arc surfaces at both ends of the waist-shaped block are provided with supporting planes. The waist-shaped block is located between the two limiting plates and the top of the waist-shaped block is abutted against the bottom of the positioning block. Limiting strips are connected between the two side edges of the two limiting plates. The two sides of the positioning block are respectively fitted with the opposite sides of the two limiting strips. An upper clamping tooth is provided on the top of the inner wall of the translation groove, and a lower clamping tooth matching the upper clamping tooth is provided on the top of the positioning block.

[0027] By adopting the above technical scheme, the setting of the translation assembly enables the first angle plate and the second angle plate to be translated. When in use, the rotating shaft is rotated to make one side of the waist-shaped block plane abut against the lower surface of the positioning block. At this time, the lower clamping tooth is separated from the upper clamping tooth, and then the sliding translation block is used to translate the position of the first angle plate. After the position of the first angle plate is determined, the rotating shaft is rotated to rotate one side of the waist-shaped block plane to a vertical state, so that the supporting plane at one end of the waist-shaped block abuts against the lower surface of the positioning block. At this time, the lower clamping tooth is meshed with the upper clamping tooth to fix the translation block, and then fix the first angle plate and the second angle plate. The supporting plane can make the end of the waist-shaped block stably abut against the positioning block to avoid the end of the waist-shaped block and the bottom of the positioning block slipping, causing the lower clamping tooth to separate from the upper clamping tooth; the setting of the translation assembly is convenient for translating the position of the clamp according to processing requirements, and is convenient for fine-tuning the position of the clamp, which is convenient for use.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] The first angle plate made of insulating material can block the current at the edges of both sides of the PCB board, reducing the possibility of thickening, burring or burning of the coating edge due to excessive current concentration at the edge of the PCB board, making the coating thickness more uniform, and improving the qualified rate of PCB board products. In addition, the first angle plate can be reused, which can save a lot of material costs compared to the method of using copper strips or copper plates to consume the current at the edge of the PCB board, and can also avoid the consumption of coating metal in the plating solution caused by the coating on the surface of the copper strip;

[0030] The first clamping groove can limit the position of the PCB board, so as to prevent the PCB board from shaking during the electroplating process and affecting the quality of the surface coating, which is beneficial to improving the yield rate of the electroplating of the PCB board;

[0031] The second angle plate is provided to facilitate lengthening the length of the first angle plate according to the specifications of the PCB board, so as to adapt to different types of PCB boards. The second clamping plate can limit the sliding distance of the second angle plate to prevent the second clamping plate from being separated from the first clamping plate.

[0032] The setting of the translation component facilitates the translation of the position of the fixture according to processing requirements, facilitates fine-tuning of the position of the fixture, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a structural diagram of the connecting mechanism.

[0035] Figure 3 It is a structural diagram of the translation component.

[0036] Figure 4 It is a structural schematic diagram of the rotating shaft and the positioning block.

[0037] Figure 5 It is a schematic diagram when the positioning block is separated from the translation slot.

[0038] Figure 6 It is a schematic diagram of the positioning block and the translation slot when they cooperate.

[0039] Figure 7 It is a schematic diagram of the structure of the first angle plate and the second angle plate.

[0040] Explanation of the reference numerals: 1. first angle plate; 11. first clamping plate; 111. first clamping groove; 12. first baffle plate; 2. second angle plate; 21. second clamping plate; 211. second clamping groove; 22. second baffle plate; 3. connecting rod; 41. connecting plate; 411. slide groove; 42. upper clamping plate; 43. lower clamping plate; 431. limiting groove; 51. bottom plate; 52. positioning ring; 53. sliding rod; 54. fixing plate; 55. compression spring; 56. mounting plate; 57. rotating member; 58. connecting plate; 61. translation plate; 62. translation groove; 621. upper clamping tooth; 63. translation block; 631. groove; 64. limiting plate; 65. rotating shaft; 66. positioning block; 661. lower clamping tooth; 67. limiting strip; 68. waist-shaped block; 681. supporting plane. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with the accompanying drawings.

[0042] The present application embodiment discloses an auxiliary fixture for PCB electroplating. Figure 1 The auxiliary fixture for PCB electroplating includes a connecting mechanism for connecting the femtobar and a first angle plate 1 connected below the connecting mechanism. The cross-section of the first angle plate 1 is L-shaped. A connecting rod 3 is vertically connected to the bottom of the connecting mechanism. The end of the connecting rod 3 away from the connecting mechanism is connected to a translation component for translating the first angle plate 1. The first angle plate 1 is made of insulating material.

[0043] Reference Figure 2 The connecting mechanism includes a connecting plate 41 connected to the connecting rod 3 at one end, an upper clamp 42 welded to the top of one side of the connecting plate 41 away from the connecting rod 3, a slide groove 411 opened on the side wall of the connecting plate 41, and a lower clamp 43 horizontally inserted into the slide groove 411. The lower clamp 43 slides in cooperation with the slide groove 411 in the vertical direction. A clamping assembly for controlling the upper and lower sliding of the lower clamp 43 is installed on the side wall of the connecting plate 41 away from the upper clamp 42.

[0044] The clamping assembly includes a base plate 51 fixedly installed on a side of the connecting plate 41 away from the upper clamping piece 42 and located above the slide groove 411 by bolts, a positioning ring 52 welded to one end of the base plate 51 close to the slide groove 411, a cylindrical slide rod 53 sliding through the positioning ring 52 in the vertical direction, a fixed plate 54 horizontally welded to one end of the connecting plate 41 close to the connecting rod 3, and a compression spring 55 connected between the fixed plate 54 and the lower clamping piece 43, the two ends of the compression spring 55 are respectively welded to the fixed plate 54 and the lower clamping piece 43, and the end of the slide rod 53 away from the positioning ring 52 is welded to the lower clamping piece 43.

[0045] A mounting piece 56 is welded to one end of the bottom plate 51 away from the positioning ring 52, a rotating member 57 is hinged to the mounting piece 56, a connecting piece 58 is hinged to one end of the slide bar 53 away from the lower clamping piece 43, and one end of the connecting piece 58 away from the slide bar 53 is hinged to the rotating member 57. The hinge point between the connecting piece 58 and the rotating member 57 is located between the mounting piece 56 and the slide bar 53, and the hinge point between the connecting piece 58 and the rotating member 57 is always located on the side of the hinge point between the mounting piece 56 and the rotating member 57 and the hinge point between the slide bar 53 and the connecting piece 58 close to the bottom plate 51.

[0046] During installation, the rotating member 57 is rotated downward, and the connecting piece 58 moves downward to drive the slide bar 53 to slide downward, and then drive the lower clamping piece 43 to slide downward and compress the compression spring 55, then the connecting plate 41 is fitted to the flying bar and the upper clamping piece 42 is hung on the flying bar, and the rotating member 57 is released, and the compression spring 55 recovers a certain degree of deformation to make the lower clamping piece 43 close to the bottom of the flying bar. At this time, the compression spring 55 is still in a compressed state, and the elastic force of the compression spring 55 makes the upper clamping piece 42 and the lower clamping piece 43 clamp the flying bar to complete the installation. The clamp is fixedly installed on the flying bar by the clamping assembly, which can save a lot of manpower and time during disassembly and assembly, and is convenient for disassembly and assembly. At the same time, it is also convenient to adjust the position of the clamp according to processing requirements, and it is convenient to protect the PCB board.

[0047] When electroplating the PCB board, each PCB board corresponds to two sets of clamps, and the openings of the two first angle plates 1 are arranged opposite to each other, so that the edges on both sides of the PCB board are respectively located between the two first angle plates 1 and fit with the two first angle plates 1. Since the first angle plates 1 are made of insulating material, the current at the edges on both sides of the PCB board can be isolated, thereby reducing the possibility of thickening of the coating edge, burrs or burning due to excessive concentration of current at the edge of the PCB board.

[0048] A limiting groove 431 is provided on both sides of the lower clamping piece 43, and the side of the slide groove 411 is embedded in the limiting groove 431 and slidably cooperates with the limiting groove 431. The limiting groove 431 can limit the movement trajectory of the lower clamping piece 43 when the lower clamping piece 43 slides up and down, so that the lower clamping piece 43 keeps moving in the vertical direction, preventing the lower clamping piece 43 from deviating when sliding up and down, and avoiding inconvenience in the installation of the clamp.

[0049] Reference Figure 3 and Figure 4 The translation assembly includes a translation plate 61 vertically connected to the outer side of the first angle plate 1 near the end of the connecting rod 3, a translation groove 62 provided on the side wall of the translation plate 61, a translation block 63 horizontally welded to the end of the connecting rod 3 away from the connecting mechanism, a limit plate 64 vertically welded to both sides of the translation block 63, a rotation shaft 65 horizontally rotatably penetrated through the two limit plates 64, and a positioning block 66 placed between the two limit plates 64. A groove 631 is provided at the bottom of the translation block 63, and the top of the translation plate 61 is slidably matched with the groove 631.

[0050] The rotating shaft 65 and the positioning block 66 are both located in the translation groove 62, and the rotating shaft 65 is located below the positioning block 66. A waist-shaped block 68 is fixedly sleeved on the rotating shaft 65. The arc surfaces at both ends of the waist-shaped block 68 are provided with support planes 681. The waist-shaped block 68 is located between the two limiting plates 64, and the top of the waist-shaped block 68 abuts against the bottom of the positioning block 66. The two sides of the two limiting plates 64 are horizontally connected to the limiting strips 67, and the two ends of the limiting strips 67 are welded to the limiting plates 64. The two sides of the positioning block 66 are respectively in contact with the opposite sides of the two limiting strips 67, and the two sides of the positioning block 66 are respectively in contact with the opposite sides of the two limiting plates 64.

[0051] Reference Figure 5 An upper latching tooth 621 is disposed at the top of the inner wall of the translation groove 62 , and a lower latching tooth 661 matching with the upper latching tooth 621 is disposed at the top of the positioning block 66 .

[0052] Reference Figure 5 and Figure 6 When in use, the rotating shaft 65 is rotated to make one side of the plane of the waist-shaped block 68 abut against the lower surface of the positioning block 66. At this time, the lower latching tooth 661 is separated from the upper latching tooth 621, and then the sliding translation block 63 is translated to the position of the first angle plate 1. After the position of the first angle plate 1 is determined, the rotating shaft 65 is rotated to make one side of the plane of the waist-shaped block 68 rotate to a vertical state, so that the supporting plane 681 at one end of the waist-shaped block 68 abuts against the lower surface of the positioning block 66. At this time, the lower latching tooth 661 is engaged with the upper latching tooth 621 to fix the translation block 63, and then fix the first angle plate 1. The supporting plane 681 can make the end of the waist-shaped block 68 stably abut against the positioning block 66, and prevent the end of the waist-shaped block 68 from slipping with the bottom of the positioning block 66, which causes the lower latching tooth 661 to separate from the upper latching tooth 621. The translation assembly is convenient for translating the position of the clamp according to processing requirements, and is convenient for fine-tuning the position of the clamp, which is convenient for use.

[0053] Reference Figure 1 The connecting rod 3 and the connecting plate 41 are detachably connected by bolts, and the translation plate 61 and the first angle plate 1 are detachably connected by bolts, so as to facilitate the disassembly and assembly of the clamp and the replacement or repair of the first angle plate 1 according to the use requirements.

[0054] Reference Figure 7The first clamping plates 11 are horizontally installed at both ends of the inner side of the first angle plate 1, and the two sides of the first clamping plate 11 are respectively bonded to the two side walls of the inner side of the first angle plate 1. The middle of the side of the first clamping plate 11 is provided with a first clamping groove 111 for fixing the PCB, and the first clamping groove 111 extends along the corner near the first angle plate 1. During electroplating, the side of the PCB board is installed in the first clamping groove 111, and the first clamping groove 111 can limit the PCB board to prevent the PCB board from shaking during the electroplating process and affecting the quality of the surface coating, which is conducive to improving the yield rate of electroplating of the PCB board.

[0055] A second angle plate 2 made of insulating material is installed on the inner side of the first angle plate 1. The outer wall of the second angle plate 2 fits with the inner wall of the first angle plate 1. The second angle plate 2 slides through the first clamping plate 11 at the bottom end of the first angle plate 1. Second clamping plates 21 are installed horizontally at both ends of the inner side of the second angle plate 2. Two sides of the second clamping plate 21 are respectively bonded to the two side walls of the inner side of the second angle plate 2. The second clamping plate 21 at the top end of the second angle plate 2 is located between the two first clamping plates 11, and the second clamping plate 21 at the bottom end of the second angle plate 2 is located below the two first clamping plates 11. A second clamping groove 211 for fixing the PCB is opened in the middle of the side of the second clamping plate 21.

[0056] By installing the second angle plate 2, the length of the first angle plate 1 can be extended according to the specifications of the PCB board, so as to adapt to different types of PCB boards. The second clamping groove 211 on the second angle plate 2 is used to increase the limiting point of the PCB board, thereby improving the limiting effect on the PCB board, which is conducive to improving the electroplating quality.

[0057] The side walls at the notch of the first clamping groove 111 and the side walls at the notch of the second clamping groove 211 are both expanded and arranged in directions away from each other, thereby guiding the installation of the PCB board and facilitating the positioning of the PCB board.

[0058] The first baffle 12 is installed on both sides of the first angle plate 1, one side of the first baffle 12 is bonded to the first angle plate 1, and the two ends of the first baffle 12 are respectively bonded to the two first clamping plates 11. The second baffle 22 is installed on both sides of the second angle plate 2, one side of the second baffle 22 is bonded to the second angle plate 2, and the two ends of the second baffle 22 are respectively bonded to the two second clamping plates 21, and the first baffle 12 is parallel to the second baffle 22 and slides in contact. The first baffle 12 and the second baffle 22 can improve the isolation effect of the current, and can also improve the structural strength of the first angle plate 1 and the second angle plate 2.

[0059] In this embodiment, the first angle plate 1 and the second angle plate 2 are both made of PVC material. In other embodiments, the first angle plate 1 and the second angle plate 2 can be made of PP material or polytetrafluoroethylene material or other insulating materials.

[0060] The implementation principle of an auxiliary fixture for PCB electroplating in an embodiment of the present application is as follows: when the PCB board is electroplated, the first angle plate 1 and the second angle plate 2 are hung on the flying bar through a connecting mechanism, and each PCB board corresponds to two groups of first angle plates 1 and second angle plates 2. The openings of the two first angle plates 1 and the two second angle plates 2 are relatively arranged so that the edges on both sides of the PCB board are respectively located between the two first angle plates 1 and the two second angle plates 2 and fit with the two first angle plates 1 and the two second angle plates 2. Since the first angle plates 1 and the second angle plates 2 are both made of insulating materials, the current at the edges on both sides of the PCB board can be isolated, thereby reducing the possibility of thickening, burr growth or burning of the coating edge due to excessive current concentration at the edge of the PCB board, making the coating thickness more uniform, and improving the qualified rate of PCB board products. Furthermore, the first angle plate 1 and the second angle plate 2 can be reused, because when a copper bar or a copper plate is used to consume the current at the edge of the PCB board, the surface of the copper bar or the copper plate will be gradually plated during the electroplating process. When the surface of the copper bar is covered with the plating, it is difficult for the copper bar to consume the current, and a new copper bar or copper plate needs to be replaced. Therefore, the first angle plate 1 and the second angle plate 2 made of insulating material can save a lot of material costs compared to the method of using a copper bar or a copper plate to consume the current at the edge of the PCB board, and can also avoid the consumption of the plated metal in the plating solution caused by the plating on the surface of the copper bar. In addition, the sliding fit of the first angle plate 1 and the second angle plate 2 makes it easy to lengthen the length of the first angle plate 1 according to the specifications of the PCB board, so that the fixture can adapt to different types of PCB boards. Only one specification of fixture is needed to produce PCB boards of various specifications, saving the manufacturing cost of the fixture.

[0061] The embodiments of this specific implementation method are preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary fixture for PCB electroplating, characterized in that: The invention comprises a connection mechanism for connecting a flying bus and a first angle plate (1) connected to the bottom of the connection mechanism, wherein the first angle plate (1) is made of insulating material, a connection rod (3) is connected between the first angle plate (1) and the connection mechanism, and the two ends of the connection rod (3) are respectively detachably connected to the connection mechanism and the first angle plate (1), and the connection mechanism comprises a connection plate (41) with one end connected to the connection rod (3), an upper clamping piece (42) arranged on the end of the connection plate (41) away from the connection rod (3), a slide groove (411) opened on the side wall of the connection plate (41), and a lower clamping piece (43) inserted into the slide groove (411), and a clamping assembly for controlling the upper and lower sliding of the lower clamping piece (43) is arranged on the side wall of the connection plate (41); A first clamping plate (11) is arranged on the inner side of the first angle plate (1), and a first clamping groove (111) for fixing a PCB board is provided on the side of the first clamping plate (11).

2. The auxiliary fixture for PCB electroplating according to claim 1, characterized in that: A second angle plate (2) is arranged on the inner side of the first angle plate (1); the second angle plate (2) is made of insulating material; the outer wall of the second angle plate (2) is in contact with the inner wall of the first angle plate (1); the first clamping plates (11) are arranged at both ends of the inner side of the first angle plate (1); the second angle plate (2) is slidably inserted into the first clamping plate (11) away from the connecting mechanism; a second clamping plate (21) is arranged on the inner side of the second angle plate (2); the second clamping plate (21) is located between the two first clamping plates (11).

3. The auxiliary fixture for PCB electroplating according to claim 2, characterized in that: Second clamping plates (21) are provided at both ends of the inner side of the second angle plate (2); the second clamping plate (21) at the top end of the second angle plate (2) is located between the two first clamping plates (11); the second clamping plate (21) at the bottom end of the second angle plate (2) is located below the two first clamping plates (11); and the side of the second clamping plate (21) is provided with a second clamping groove (211) for fixing a PCB board.

4. The auxiliary fixture for PCB electroplating according to claim 2, characterized in that: A first baffle (12) is provided on both sides of the first angle plate (1), and two ends of the first baffle (12) are respectively connected to the two first clamping plates (11); a second baffle (22) is provided on both sides of the second angle plate (2), and two ends of the second baffle (22) are respectively connected to the two second clamping plates (21); the first baffle (12) and the second baffle (22) are parallel and slidably matched.

5. The auxiliary fixture for PCB electroplating according to claim 1, characterized in that: The clamping assembly comprises a bottom plate (51) arranged on a side wall of the connecting plate (41) and located above the slide groove (411), a positioning ring (52) arranged on one end of the bottom plate (51) close to the slide groove (411), a sliding rod (53) slidably penetrated through the positioning ring (52), a fixing plate (54) arranged on one end of the connecting plate (41) close to the connecting rod (3), and a compression spring (55) connected between the fixing plate (54) and the lower clamping piece (43). One end of the slide bar (53) away from the positioning ring (52) is fixedly connected to the lower clamping piece (43); one end of the bottom plate (51) away from the positioning ring (52) is provided with a mounting plate (56); a rotating member (57) is rotatably connected to the mounting plate (56); one end of the slide bar (53) away from the lower clamping piece (43) is rotatably connected to a connecting plate (58); one end of the connecting plate (58) away from the slide bar (53) is rotatably connected to the rotating member (57).

6. The auxiliary fixture for PCB electroplating according to claim 5, characterized in that: Limiting grooves (431) are provided on both sides of the lower clamping piece (43), and the side edges of the sliding groove (411) are embedded in the limiting grooves (431) and slidably cooperate with the limiting grooves (431).

7. The auxiliary fixture for PCB electroplating according to claim 1, characterized in that: A translation assembly is connected between the connecting rod (3) and the first angle plate (1), and the translation assembly comprises a translation plate (61) detachably connected to one end of the first angle plate (1) close to the connecting rod (3), a translation groove (62) provided on the side wall of the translation plate (61), a translation block (63) connected to one end of the connecting rod (3) away from the connecting mechanism, a limit plate (64) vertically connected to both sides of the translation block (63), a rotation shaft (65) horizontally rotatably penetrated through the two limit plates (64), and a positioning block (66) provided between the two limit plates (64), a groove (631) provided at the bottom of the translation block (63), a top of the translation plate (61) slidably cooperates with the groove (631), and the rotation shaft (65) and the positioning block (66) are connected to the connecting rod (3) and the limit plate (64). 6) are both located in the translation groove (62) and the rotation shaft (65) is located below the positioning block (66), a waist-shaped block (68) is fixedly sleeved on the rotation shaft (65), and the arc surfaces at both ends of the waist-shaped block (68) are provided with supporting planes (681), the waist-shaped block (68) is located between the two limiting plates (64) and the top of the waist-shaped block (68) is in contact with the bottom of the positioning block (66), the two side edges of the two limiting plates (64) are connected between the limiting strips (67), the two sides of the positioning block (66) are respectively fitted with the opposite sides of the two limiting strips (67), the top of the inner wall of the translation groove (62) is provided with an upper clamping tooth (621), and the top of the positioning block (66) is provided with a lower clamping tooth (661) matched with the upper clamping tooth (621).

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