CN216006062U

CN216006062U - Plate clamp assembly of PCB (printed circuit board) electroplating production line

Info

Publication number: CN216006062U
Application number: CN202121738900.8U
Authority: CN
Inventors: 南文辉
Original assignee: Shaanxi Zhongtu Heavy Industry Machinery Co ltd
Current assignee: Shaanxi Zhongtu Heavy Industry Machinery Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-11
Anticipated expiration: 2031-07-28

Abstract

The plate anchor clamps subassembly of PCB board electroplating production line includes: the device comprises a femto beam, a copper plate connected with the femto beam and a plurality of PCB clamps arranged on the copper plate; the plate clamp comprises a connecting part connected with the copper flat, a first clamping arm and a second clamping arm which are symmetrically arranged at two sides of the connecting part, and a compression spring for providing clamping force for the first clamping arm and the second clamping arm, wherein the first clamping arm and the second clamping arm are both provided with clamping end parts which are contacted with the PCB; the first clamping arm and the second clamping arm are respectively connected with the connecting part through a rotating shaft, the first clamping arm and the second clamping arm can rotate around the rotating shafts respectively, a first linkage tooth part is arranged on the first clamping arm, a second linkage tooth part is arranged on the second clamping arm, and the first linkage tooth part is meshed with the second linkage tooth part; conductive parts are arranged between the first clamping arm and the connecting part and between the second clamping arm and the connecting part. The clamp can ensure that the clamping arms are opened synchronously, is convenient for the upper plate and the lower plate, has good guidance among all the parts, and ensures the electroplating effect.

Description

Plate clamp assembly of PCB (printed circuit board) electroplating production line

Technical Field

The utility model belongs to the technical field of PCB (printed circuit board) electroplating production lines, and particularly relates to a plate clamp assembly of a PCB electroplating production line.

Background

The circuit board is also called as a PCB (printed Circuit Board), is a carrier for installing and connecting chips and components of electronic automation equipment, is very wide in application and has huge market demand. At present, the electroplating process of the circuit board mainly adopts the following two types of production lines: gantry and ring. Automatic production has been realized to a certain extent to planer-type PCB board plating line, has improved production efficiency, but traditional planer-type plating line all adopts manual operation's mode to realize the upper plate and the hypoplastron of circuit board, on the plate clamp of plating line was pressed from both sides one by one to the circuit board by the workman during the upper plate, took off one by the workman circuit board on the plate clamp after the electroplating was accomplished again. Because the processes of the upper plate and the lower plate can not be automated, the efficiency is low, the labor intensity of workers is high, and certain health hazards can be caused to the bodies of the workers.

In order to improve the efficiency of hypoplastron on the PCB board plating line, chinese utility model patent No. 202020441821X discloses an automatic hypoplastron device for realize the automatic upper plate and the hypoplastron of PCB board, nevertheless there is the place that needs the improvement still in the structure of current plate anchor clamps, for example, there may be the electrically conductive bad condition by the influence that anchor clamps opened and shut the action between each part of anchor clamps, two arm lock of anchor clamps open and shut the action inconsistent, lead to upper plate or hypoplastron difficulty, the plating solution is gathered easily between the contact position of anchor clamps and PCB board, influence electroplating effect etc..

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plate clamp assembly of a PCB electroplating production line, which can ensure good electric conduction among all parts of the clamp and synchronous and smooth opening and closing actions.

In order to achieve the purpose, the utility model adopts the following technical solutions:

the plate anchor clamps subassembly of PCB board electroplating production line includes: the device comprises a femto beam, a copper plate connected with the femto beam and a plurality of PCB clamps arranged on the copper plate; the plate clamp comprises a connecting part connected with the copper flat, a first clamping arm and a second clamping arm which are symmetrically arranged at two sides of the connecting part, and a compression spring for providing clamping force for the first clamping arm and the second clamping arm, wherein the first clamping arm and the second clamping arm are both provided with clamping end parts contacted with the PCB; the first clamping arm and the second clamping arm are respectively connected with the connecting part through a rotating shaft, the first clamping arm and the second clamping arm can rotate around the rotating shafts respectively, a first linkage tooth part is arranged on the first clamping arm, a second linkage tooth part is arranged on the second clamping arm, and the first linkage tooth part is meshed with the second linkage tooth part; and conductive parts are arranged between the first clamping arm and the connecting part and between the second clamping arm and the connecting part.

Further, the conductive part is a steel wire rope.

Further, the conductive part is fixed on the first clamping arm, the second clamping arm and the connecting part through a pressing sheet and a threaded fastener or through a fixing clamp.

Furthermore, the conductive part is connected with the first clamping arm, the second clamping arm and the connecting part in a welding mode.

Furthermore, at least one flow guide groove extending from top to bottom is arranged on the clamping end part.

Furthermore, the first clamping arm and/or the second clamping arm are/is provided with a plate limiting part, and the plate limiting part is positioned above the clamping end part.

Furthermore, the first linkage tooth portion and the second linkage tooth portion respectively comprise a first tooth piece and a second tooth piece, the first tooth piece and the second tooth piece are arranged at intervals along the thickness direction of the clamping arm, the first tooth piece is provided with one meshing tooth, the second tooth piece is provided with two meshing teeth, the first tooth piece on the first linkage tooth portion is meshed with the second tooth piece on the second linkage tooth portion, the second tooth piece on the first linkage tooth portion is meshed with the first tooth piece on the second linkage tooth portion, and the first clamping arm and the second clamping arm are identical in shape.

Furthermore, spring seats for accommodating the end parts of the compression springs are arranged on the first clamping arm and the second clamping arm, a clamping force adjusting assembly is arranged at the outer end part of each spring seat and comprises a clamping force adjusting bolt, the clamping force adjusting bolt is in threaded connection with the spring seats, the axis of the clamping force adjusting bolt is overlapped with the axis of the compression springs, and the end parts of the clamping force adjusting bolt abut against the end parts of the compression springs accommodated in the spring seats.

Further, the clamping force adjusting assembly further comprises a locknut arranged on the clamping force adjusting bolt.

Furthermore, the periphery of the lower part of the first clamping arm and the periphery of the lower part of the second clamping arm are both provided with rubber coatings.

Furthermore, the vertical section of the clamping end part is in a sawtooth shape.

According to the technical scheme, the two clamping arms are provided with the interlocking tooth parts which are meshed with each other, so that the two clamping arms can ensure the synchronism of the clamping arms through the interlocking tooth parts in the opening or closing action process, the opening/closing of the clamp is smooth and consistent, and the upper plate and the lower plate are convenient to mount; meanwhile, the conductive part is arranged between the clamping arm and the connecting part, so that good conductivity among all parts of the clamp can be ensured, and the electroplating effect is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a panel jig according to embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a panel jig according to embodiment 2 of the present invention.

Fig. 4 is a schematic structural view of a panel jig according to embodiment 3 of the present invention.

Fig. 5 is a schematic structural view of a panel jig according to embodiment 4 of the present invention.

Fig. 6 is a schematic structural view of a panel jig according to embodiment 5 of the present invention.

Fig. 7 is a schematic structural view of a panel jig clamping portion according to embodiment 5 of the present invention.

Fig. 8 is a partially enlarged schematic view of a portion a in fig. 7.

Fig. 9 is a partial structural view of a panel jig clamping portion according to embodiment 5 of the present invention.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the plate jig assembly of the PCB electroplating production line of this embodiment includes a flying beam 1, a copper plate 2 connected to the flying beam 1, and a plurality of plate jigs 3 disposed on the copper plate 2, wherein the plate jigs 3 are arranged at regular intervals along the extending direction of the copper plate 2, and the PCB is clamped by the plate jigs 3. The panel clamps 3 on the same copper flat 2 can be opened or closed synchronously by a clamp synchronous opening and closing mechanism (not shown). The specific structure of the synchronous opening and closing mechanism of the clamp can refer to the structure of the synchronous opening and closing mechanism of the clamp in the chinese patent application with publication number CN 111379006A.

As shown in fig. 2, the plate clamp 3 of this embodiment is a symmetrical double-open type clamp, the plate clamp 3 includes a first clamping arm 3-1, a second clamping arm 3-2, a connecting portion 3-3 and a compression spring 3-4, and the connecting portion 3-3 is connected to the copper flat 2. The first clamping arm 3-1 and the second clamping arm 3-2 are identical in structure and symmetrically arranged on two sides of the connecting part 3-3, the first clamping arm 3-1 and the second clamping arm 3-2 are respectively connected with the connecting part 3-3 through a rotating shaft a, and the first clamping arm 3-1 and the second clamping arm 3-2 can rotate around the rotating shaft a, so that the clamp is opened or closed. The first clamping arm 3-1 is provided with a first interlocking tooth part 3-1a, the second clamping arm 3-2 is provided with a second interlocking tooth part 3-2a, the first interlocking tooth part 3-1a is meshed with the second interlocking tooth part 3-2a, and the interlocking tooth parts are used for ensuring the action synchronism of the two clamping arms when the first clamping arm 3-1 and the second clamping arm 3-2 are opened and closed so as to facilitate the loading and unloading of plates. The first interlocking tooth portion 3-2a and the second interlocking tooth portion 3-2b of the present embodiment are both provided with through holes for the rotating shaft a to pass through, that is, the rotation axis of the first clamping arm 3-1 and the rotation axis of the second clamping arm 3-2 respectively pass through the first interlocking tooth portion 3-1a and the second interlocking tooth portion 3-2 a.

For convenience of description, the position of the rotating shaft a is used to divide the first clamping arm 3-1 and the second clamping arm 3-2 into an upper part and a lower part, the lower parts of the first clamping arm 3-1 and the second clamping arm 3-2 form a clamping part, and the PCB is clamped by the lower parts of the first clamping arm 3-1 and the second clamping arm 3-2. The upper portions of the first and second clamp arms 3-1 and 3-2 constitute an operating portion, and the opening or closing of the first and second clamp arms 3-1 and 3-2 is controlled by pressing or releasing the upper portions of the first and second clamp arms 3-1 and 3-2. The compression spring 3-4 of the present embodiment includes a pair of compression springs 3-4 coaxially disposed, wherein one end of one of the compression springs 3-4 abuts against the upper portion of the first arm lock 3-1, and the other end abuts against the connecting portion 3-3, and similarly, one end of the other compression spring 3-4 abuts against the upper portion of the second arm lock 3-2, and the other end abuts against the connecting portion 3-3. The pressing spring 3-4 is abutted against the upper parts of the first clamping arm and the second clamping arm, so that a force for clamping the lower parts of the first clamping arm 3-1 and the second clamping arm 3-2 can be provided. To open the clamp, a force is applied to the upper portions (upper ends) of the first and second clamp arms to overcome the elastic force of the compression springs 3-4 to open the clamp. When the first clamping arm 3-1 and the second clamping arm 3-2 are opened, the distance between the lower end of the first clamping arm 3-1 and the lower end of the second clamping arm 3-2, that is, the opening of the clamp is at least 12mm, preferably 20mm, and the opening is large enough to facilitate automatic plate loading.

Conductive parts 3-5 are provided between the first clamping arm 3-1 and the connecting part 3-3, and between the second clamping arm 3-2 and the connecting part 3-3, both ends of the conductive part 3-5 of this embodiment are fixed to the first clamping arm 3-1, the second clamping arm 3-2 and the connecting part 3-3 by pressing pieces 3-6, and the pressing pieces 3-6 of this embodiment are mounted on the first clamping arm 3-1, the second clamping arm 3-2 and the connecting part 3-3 by screws (not numbered). However, in order to reduce the cost, the conductive part can also be connected with the first clamping arm, the second clamping arm and the connecting part in a welding mode, and the welding mode has the advantages of low cost, reliable connection and good conductive effect. Through setting up the conductive part, guaranteed to keep good effectual electric conductivity between each part of plate anchor clamps, avoid opening and shutting of plate anchor clamps to lead to the electric conduction badly. In a specific application, the conductive parts 3-5 may be steel wire ropes.

As a preferred embodiment, in order to prevent the circuit board from being deformed due to excessive pressure applied by the clip arms on the PCB, the vertical cross-sectional shapes of the clamping ends (the portions of the clamping portions contacting the PCB) of the first clip arm 3-1 and the second clip arm 3-2 are saw-toothed (fig. 8), that is, the projection of the surface of the clamping end contacting the PCB on a plane perpendicular to the thickness direction of the clip arms (the direction perpendicular to the plane of the paper in fig. 8) is a saw-toothed line. The contact area of both sides arm and PCB board has been reduced to the centre gripping tip of zigzag, can avoid the too big condition that leads to PCB board fatigue fracture of clamping-force of arm to take place from this.

The connecting part 3-3 of the embodiment is arranged on the copper flat 2 through a mounting piece 3-3b matched with the connecting part. The upper end of the connecting part 3-3 is connected with the mounting piece 3-3b through a threaded connecting piece 3-3c which is arranged at an upper and lower interval, and the copper flat 2 is positioned between the upper end of the connecting part 3-3 and the mounting piece 3-3 b. After the threaded connectors 3-3c are screwed down, the PCB clamp can be fixed on the copper flat 2.

Example 2

As shown in FIG. 3, the present embodiment is different from embodiment 1 in that only one compression spring 3-4 is provided, a through hole 3-3a for the compression spring 3-4 to pass through is formed in the connecting portion 3-3, and one end of the compression spring 3-4 abuts against the upper portion of the first clip arm 3-1 and the other end abuts against the upper portion of the second clip arm 3-2, so that the first clip arm 3-1 and the second clip arm 3-2 are kept in a closed state. In addition, as a preferable embodiment, the spring seat 3-6 for accommodating the end part of the compression spring 3-4 is arranged on the first clamping arm 3-1 and the second clamping arm 3-2, the clamping force adjusting bolt 3-7 is arranged at the outer end part of the spring seat 3-6, the clamping force adjusting bolt 3-7 and the spring seat 3-6 are in a threaded connection mode, the axis of the clamping force adjusting bolt 3-7 is coincident with the axis of the compression spring 3-4, the end part of the clamping force adjusting bolt 3-7 is abutted against the end part of the compression spring 3-4, and the pressing force of the compression spring 3-4 can be adjusted by screwing the clamping force adjusting bolt 3-7.

The upper end of the connecting part 3-3 of the embodiment is in a T shape, a mounting hole (not numbered) is processed on the T-shaped head, and the T-shaped head of the connecting part 3-3 is mounted on the copper flat through a threaded connecting piece penetrating through the mounting hole.

Example 3

As shown in fig. 4, this embodiment is different from embodiment 2 in that: the two ends of the conductive part 3-5 of this embodiment are fixed on the first clamping arm 3-1, the second clamping arm 3-2 and the connecting part 3-3 by fixing clips 3-6'. The fixing clip 3-6' is welded on the first clamping arm 3-1, the second clamping arm 3-2 and the connecting part 3-3.

Example 4

As shown in fig. 5, the present embodiment is different from embodiment 1 in that both ends of the conductive part 3-5 of the present embodiment are fixed to the first clip arm 3-1, the second clip arm 3-2, and the connecting part 3-3 by screws (not numbered). The clamping force adjusting assembly further comprises a locknut 3-8, the locknut 3-8 is arranged on the clamping force adjusting bolt 3-7, and the locknut 3-8 can be screwed to prevent the clamping force adjusting bolt 3-7 from loosening.

Example 5

Referring to fig. 6, 7, 8 and 9, the present embodiment differs from embodiment 1 in that: the first interlocking tooth portion 3-1a of the present embodiment includes a first tooth plate Q1 and a second tooth plate Q2, the first tooth plate Q1 and the second tooth plate Q2 are spaced apart in the thickness direction of the first arm 3-1, the first tooth plate Q1 has one engaging tooth, and the second tooth plate Q2 has two engaging teeth. The second interlocking tooth portion 3-2a also includes a first tooth plate Q1 and a second tooth plate Q2. The first tooth piece Q1 on the first interlocking tooth part 3-1a is meshed with the second tooth piece Q2 on the second interlocking tooth part 3-2a, and the second tooth piece Q2 on the first interlocking tooth part 3-1a is meshed with the first tooth piece Q1 on the second interlocking tooth part 3-2a, so that the first clamping arm 3-1 and the second clamping arm 3-2 can be synchronously rotated and opened within 180 degrees. As shown in figure 6, the first clamping arm and the second clamping arm are of the same structure and are symmetrically arranged, and the two clamping arms can be used universally, so that the production cost is reduced.

In the embodiment, the first clamping arm 3-1 is provided with a plate limiting part 3-9, and the plate limiting part 3-9 is positioned above the clamping end part 3-10 on the clamping arm. The plate limiting parts 3-9 are used for limiting the height of the PCB, and when the plate clamp clamps the PCB, the top end of the PCB can be blocked by the plate limiting parts 3-9, so that the height of the PCB cannot exceed the plate limiting parts 3-9. Preferably, the peripheries of the clamping parts of the first clamping arm 3-1 and the second clamping arm 3-2 are provided with rubber coatings 3-11, and the rubber coatings 3-11 can prevent electroplating solution from being coated on the clamping arms during electroplating. The plate limiting part can be arranged on any one clamping arm, or the plate limiting parts are arranged on the two clamping arms.

As a preferred embodiment of the present invention, at least one diversion trench 3-10a is disposed on (the surface of) the clamping end portion 3-10 contacting with the PCB, the diversion trench 3-10a extends from top to bottom, the diversion trench 3-10a of this embodiment extends along the vertical direction, and the diversion trench 3-10a is used for diverting the electroplating solution, so as to prevent the electroplating effect from being affected by the accumulated liquid at the contact position of the clamping end portion 3-10 and the PCB when the clamp clamps the PCB.

In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same or similar parts among the parts are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A plate clamp assembly of a PCB electroplating production line, comprising: the device comprises a femto beam, a copper plate connected with the femto beam and a plurality of PCB clamps arranged on the copper plate; the method is characterized in that:

the plate clamp comprises a connecting part connected with the copper flat, a first clamping arm and a second clamping arm which are symmetrically arranged at two sides of the connecting part, and a compression spring for providing clamping force for the first clamping arm and the second clamping arm, wherein the first clamping arm and the second clamping arm are both provided with clamping end parts contacted with the PCB;

the first clamping arm and the second clamping arm are respectively connected with the connecting part through a rotating shaft, the first clamping arm and the second clamping arm can respectively rotate around the rotating shafts, a first linkage tooth part is arranged on the first clamping arm, a second linkage tooth part is arranged on the second clamping arm, and the first linkage tooth part is meshed with the second linkage tooth part;

and conductive parts are arranged between the first clamping arm and the connecting part and between the second clamping arm and the connecting part.
2. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the conductive part is a steel wire rope.
3. The board jig assembly of a PCB board electroplating line according to claim 1 or 2, wherein: the conductive part is fixed on the first clamping arm, the second clamping arm and the connecting part through a pressing sheet and a threaded fastener or through a fixing clamp.
4. The board jig assembly of a PCB board electroplating line according to claim 1 or 2, wherein: the conductive part is connected with the first clamping arm, the second clamping arm and the connecting part in a welding mode.
5. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the clamping end part is provided with at least one flow guide groove extending from top to bottom.
6. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the first clamping arm and/or the second clamping arm are/is provided with a plate limiting part, and the plate limiting part is located above the clamping end part.
7. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the first linkage tooth part and the second linkage tooth part respectively comprise a first tooth piece and a second tooth piece, the first tooth piece and the second tooth piece are arranged at intervals along the thickness direction of the clamping arm, the first tooth piece is provided with one meshing tooth, the second tooth piece is provided with two meshing teeth, the first tooth piece on the first linkage tooth part is meshed with the second tooth piece on the second linkage tooth part, the second tooth piece on the first linkage tooth part is meshed with the first tooth piece on the second linkage tooth part, and the first clamping arm and the second clamping arm are identical in shape.
8. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the clamping device comprises a first clamping arm, a second clamping arm, a compression spring, a spring seat and a clamping force adjusting assembly, wherein the first clamping arm and the second clamping arm are provided with spring seats for containing the end parts of the compression spring, the outer end parts of the spring seats are provided with the clamping force adjusting assembly, the clamping force adjusting assembly comprises clamping force adjusting bolts, the clamping force adjusting bolts are in threaded connection with the spring seats, the axis of the clamping force adjusting bolts is superposed with the axis of the compression spring, and the end parts of the clamping force adjusting bolts abut against the end parts of the compression spring contained in the spring seats.
9. The board jig assembly of a PCB board electroplating line according to claim 8, wherein: the clamping force adjusting assembly further comprises a locknut arranged on the clamping force adjusting bolt.
10. The board jig assembly of a PCB board electroplating line according to claim 1, wherein: the periphery of the lower part of the first clamping arm and the periphery of the lower part of the second clamping arm are both provided with rubber coatings; and/or the vertical cross section of the clamping end part is in a sawtooth shape.