CN111229709B

CN111229709B - Cleaning line before gilding of circuit board

Info

Publication number: CN111229709B
Application number: CN202010056268.2A
Authority: CN
Inventors: 许招弟; 王攀峰; 寇斌; 周俊杰
Original assignee: Simmtech Electronics Xi'an Co ltd
Current assignee: Simmtech Electronics Xi'an Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2021-07-13
Anticipated expiration: 2040-01-18
Also published as: CN111229709A

Abstract

The invention discloses a cleaning line before gold plating of a circuit board, which relates to the field of circuit board production and comprises a plurality of water tanks and a conveying assembly, wherein the plurality of water tanks are sequentially arranged, the conveying assembly is used for sequentially putting a workpiece into the plurality of water tanks for rinsing, the conveying assembly comprises a travelling crane, a clamping frame which slides below a moving arm of the travelling crane along the vertical direction and is used for clamping the workpiece, and a driving piece which is arranged on the moving arm of the travelling crane and drives the clamping frame to move up and down, and the clamping frame comprises an annular frame, a lower supporting piece and an upper clamping piece; the annular frame is connected to the travelling crane in a sliding manner, and the upper inner side wall and the lower inner side wall of the annular frame are horizontally arranged in parallel; the lower supporting piece is arranged on the lower end of the annular frame, and the upper end surface of the lower supporting piece is provided with a positioning groove for embedding a workpiece; the upper clamping piece is fixed at the upper end of the annular frame and used for clamping a workpiece to be positioned. The lower supporting piece and the upper clamping piece are arranged, so that the situation that the surface of the workpiece is clamped is reduced, and the quality of the workpiece is more stable.

Description

Cleaning line before gilding of circuit board

Technical Field

The invention relates to the field of circuit board production, in particular to a cleaning line for a circuit board before gold plating.

Background

The principle of gold plating of circuit boards generally refers to "gold electroplating", "nickel gold electroplating", "electrolytic gold", "electric gold" and "electric nickel gold", and the distinction between soft gold and hard gold (generally hard gold is used for gold fingers) is that nickel and gold (commonly called gold salt) are dissolved in chemical liquid, a circuit board is immersed in an electroplating cylinder and is electrified to generate a nickel-gold plating layer on the copper foil surface of the circuit board, and the electric nickel-gold is widely applied to electronic products due to the advantages of high hardness, wear resistance and difficult oxidation of the plating layer.

Aiming at a large-sized circuit board, when gold is plated, the circuit board needs to be clamped on a workpiece through a clamping assembly below the travelling crane, and then the circuit board enters chemical liquid for gold plating. Before the gold plating of circuit board, need wash the work piece, current transport through the driving is put into a plurality of water tanks in proper order with the work piece and is rinsed, with impurity sanitization.

The clamping assembly is a fixing clamp, a workpiece is clamped and fixed through the fixing clamp, and the circuit board is large and heavy, so that the clamping force of the fixing clamp is large, the surface of the workpiece is easily clamped and damaged, the quality is affected, and improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a cleaning line for a circuit board before gold plating, which has the advantage of reducing clamping damage on the surface of a workpiece.

In order to achieve the purpose, the invention provides the following technical scheme:

a cleaning line before gold plating of a circuit board comprises a plurality of water tanks, a conveying assembly and a driving assembly, wherein the plurality of water tanks are sequentially arranged, the conveying assembly is used for sequentially putting a workpiece into the plurality of water tanks for rinsing, the conveying assembly comprises a travelling crane, a clamping frame and a driving piece, the clamping frame slides below a moving arm of the travelling crane along the vertical direction and is used for clamping the workpiece, the driving piece is arranged on the moving arm of the travelling crane and drives the clamping frame to move up and down, and the clamping frame comprises an annular frame, a lower supporting piece and; the annular frame is connected to the travelling crane in a sliding manner, and the upper inner side wall and the lower inner side wall of the annular frame are horizontally arranged in parallel; the lower supporting piece is arranged on the lower end of the annular frame, and a positioning groove for embedding a workpiece is formed in the upper end face of the lower supporting piece; the upper clamping piece is fixed at the upper end of the annular frame and used for clamping a workpiece to be positioned.

Through above-mentioned technical scheme, when needs wash the circuit board, support the back through the constant head tank that corresponds the card income lower support piece with the lower extreme of circuit board, then carry out the centre gripping through the top holder and fix can. At the moment, the lower support piece supports the weight of the workpiece, the upper clamping piece above the lower support piece mainly plays a role in righting and positioning, the clamping force of the upper clamping piece on the workpiece is small, the situation that the surface of the workpiece is clamped is reduced, and the quality of the workpiece is more stable.

The present invention in a preferred example may be further configured to: the lower support piece is provided with a plurality of, every along the horizontal direction the lower support piece is including setting up fixed part on the annular frame, being fixed in two collateral branch vaulting poles of fixed part up end, and two bracing pieces are kept away from the setting gradually towards the direction of keeping away from the fixed part and are made the constant head tank is the V-arrangement groove.

Through above-mentioned technical scheme, the constant head tank is the setting in V-arrangement groove for the operation that the constant head tank was gone into to work piece below card is more convenient.

The present invention in a preferred example may be further configured to: the lower support piece is made of plastic, and the support rod is cylindrical and is arranged in a mode of gradually diminishing towards the direction away from the fixing portion.

Through above-mentioned technical scheme, the bracing piece is cylindrically to make the bracing piece be the point contact with the contact surface of work piece, thereby reduced the contact surface, make and wash more thoroughly, the bracing piece gradually diminishes in addition sets up and has reduced the bracing piece and blockked the washing liquid when wasing.

The present invention in a preferred example may be further configured to: go up the holder and be provided with a plurality ofly along the horizontal direction, every goes up the holder and all includes the fixation clamp portion that is fixed in on the ring frame, articulate articulated clamp portion on the fixed part, connect and make articulated clamp portion centre gripping work piece in the torsional spring of fixation clamp portion between fixation clamp portion and articulated clamp portion, the upper end of articulated clamp portion still is connected with the handle, the handle is upwards extended towards keeping away from fixation clamp portion and being the slope.

Through above-mentioned technical scheme, when the work piece is installed and need carry out the centre gripping to the work piece top after the constant head tank, make articulated clamping part upset open through pressing the handle, contradict the fixed clamping part when the work piece after with the handle loosen slowly for articulated clamping part supports tightly the work piece and keeps away from the terminal surface of fixed clamping part and carries out the centre gripping fixedly.

The present invention in a preferred example may be further configured to: the articulated clamping part is close to the terminal surface of fixed clamping part and has seted up the centre gripping groove, the degree of depth in centre gripping groove is greater than the thickness of work piece just the centre gripping groove runs through articulated clamping part setting downwards, the tank bottom in centre gripping groove is provided with the rubber pad.

Through above-mentioned technical scheme, set up centre gripping groove and rubber pad, the centre gripping groove can form the space that supplies the work piece to hold, then supports tightly on the work piece through the rubber pad, and rubber pad elastic deformation can reduce the condition that the workpiece surface was hindered by the clamp, and the conflict of rubber pad can be fixed a position the work piece simultaneously to make the difficult follow of work piece break away from on the holder.

The present invention in a preferred example may be further configured to: the hinged clamping parts of the upper clamping pieces clamped on the same workpiece are fixedly connected through connecting rods, and handles corresponding to the hinged clamping parts are connected through fixing rods.

Through the technical scheme, the hinged clamping parts are connected with the handles corresponding to the hinged clamping parts through the connecting rods and the fixing rods, and the hinged clamping parts for clamping the same workpiece can be turned and opened simultaneously by operating one of the handles, so that the clamping and dismounting operation of the workpiece is more convenient.

The present invention in a preferred example may be further configured to: the lower terminal surface of driving train moving arm is provided with two deflectors, two the deflector is located the both ends of annular frame horizontal direction respectively, the corrugated guide way has been seted up along vertical direction to the terminal surface that the deflector is close to the annular frame, the annular frame all is fixed with the extension rod along the both ends of horizontal direction, the extension rod correspondence penetrates the guide way setting, be connected with the articulated elements between driving piece and the holding frame, the articulated elements including connect articulated seat, the one end on the driving piece articulate and the other end articulate in articulated rod on the annular frame, the extension rod is close to the top setting of annular frame.

Through the technical scheme, when the driving piece drives the hinging seat to move upwards, the hinging rod of the hinging seat can drive the annular frame to move upwards, and the extension rods at the two ends of the annular frame rise along the guide grooves, so that the cleaning liquid adhered to the workpiece is thrown out by swinging the workpiece. When the driving piece drives the hinged shaft to move downwards, the annular frame moves downwards under the action of the matching gravity of the driving piece, so that a workpiece on the annular frame is immersed into the water tank, and in the downward movement process, the workpiece follows the annular frame to swing, so that the cleaning effect of the workpiece in the water tank is better.

The present invention in a preferred example may be further configured to: the extending rod penetrates into the guide groove and is correspondingly sleeved with a bearing.

Through above-mentioned technical scheme, the extension rod passes through bearing and guide way lateral wall friction, and the roll through the bearing has reduced frictional resistance for reciprocating of holding frame is more smooth and easy.

The present invention in a preferred example may be further configured to: two guide grooves are formed in each guide plate and symmetrically distributed in the horizontal direction, two clamping frames are arranged, the hinge rods and the extension rods are correspondingly arranged, and the extension rods on the annular frames are correspondingly matched with the two guide grooves; the articulated elements are located between two clamping racks, and each articulated rod is arranged from one end of the articulated seat to one end of the clamping rack in an inclined downward mode.

Through the technical scheme, when the workpieces on the two clamping frames move downwards for cleaning, the two clamping frames drive the workpieces to swing so that the cleaning liquid impacts the opposite end faces of the workpieces, and the cleaning effect is better. When the driving piece drives the two clamping frames to move upwards synchronously, the symmetrical swinging of the two clamping frames can enable the distance between the two clamping frames to change along with the swinging, so that air flow is formed, and the attached cleaning liquid can be further separated from the cleaning liquid through the air flow when the cleaning liquid is thrown out in a swinging mode. Two clamping frames are arranged, so that the cleaning efficiency of the cleaning line is better, and the cleaning effect is better.

The present invention in a preferred example may be further configured to: two the annular frame is close to lower extreme department and is connected with the connecting strip, the both ends of connecting strip are articulated with the annular frame respectively.

Through above-mentioned technical scheme, when two support frames reciprocate when following the guide way swing, the connecting strip can reduce two support frame lower extremes and bump to make whole use more stable.

Compared with the prior art, the invention has the beneficial effects that:

(1) by arranging the lower supporting piece and the upper clamping piece, the situation that the surface of the workpiece is clamped is reduced, so that the quality of the workpiece is more stable;

(2) the clamping groove and the rubber pad are arranged, so that the situation that the surface of the workpiece is clamped is further reduced;

(3) through setting up two holding framves for the cleaning efficiency of cleaning line is better, makes the cleaning performance better simultaneously.

Drawings

FIG. 1 is a general schematic view of a first embodiment;

FIG. 2 is a schematic partial structure diagram according to the first embodiment;

FIG. 3 is a schematic view of a holder according to the first embodiment;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 3;

FIG. 6 is a schematic partial structure diagram according to the second embodiment;

fig. 7 is an enlarged schematic view of the structure of two holding frame parts in the third embodiment.

Reference numerals: 1. a water tank; 2. a delivery assembly; 21. driving a vehicle; 211. a moving arm; 22. a clamping frame; 221. an annular frame; 222. a lower support; 2221. a fixed part; 2222. a support bar; 223. an upper clamping member; 2231. a fixing clip part; 2232. a hinged clamp portion; 2233. a torsion spring; 23. a drive member; 3. a connecting seat; 4. a guide strip; 5. a guide wheel; 6. positioning a groove; 7. a clamping groove; 8. a rubber pad; 9. a handle; 10. a connecting rod; 11. fixing the rod; 12. a guide plate; 13. a guide groove; 14. an extension pole; 15. a bearing; 16. a connecting strip; 17. an articulation member; 171. a hinged seat; 172. a hinged lever.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

The first embodiment is as follows:

a cleaning line before gold plating of a circuit board is shown in figures 1 and 2 and comprises a plurality of water tanks 1 and a conveying assembly 2 which are arranged in sequence, wherein the water tanks 1 are arranged in a row. The conveying assembly 2 comprises a travelling crane 21, a clamping frame 22 which slides below a moving arm 211 of the travelling crane 21 along the vertical direction and is used for clamping workpieces, and a driving piece 23 which is fixed on the moving arm 211 of the travelling crane 21. The moving arm 211 of the travelling crane 21 is positioned above the water tank 1 and slides along the direction of distribution of the water tank 1; the driving member 23 is an air cylinder or an oil cylinder, and an output shaft of the driving member 23 is connected to the clamping frame 22 and used for driving the clamping frame 22 to move up and down.

When the work piece is located and needs to wash on the holding frame 22, driving 21 drives holding frame 22 and removes to water tank 1 top, then makes work piece submergence on the holding frame 22 to water tank 1 in through driving piece 23, then driving piece 23 drives holding frame 22 and shifts up and make holding frame 22 lower extreme be higher than water tank 1, then removes to next water tank 1 repetitive operation to put into a plurality of water tanks 1 with the work piece in proper order and rinse.

As shown in fig. 1 and 2, the holder 22 includes a ring-shaped frame 221, a plurality of lower supporting members 222, and a plurality of upper clamping members 223. The annular frame 221 is connected to the traveling crane 21 in a sliding manner, the upper inner side wall and the lower inner side wall of the annular frame 221 are arranged horizontally and in parallel, the annular frame 221 is arranged in a rectangular square ring shape, and the length direction of the annular frame is arranged along the horizontal direction. The annular frame 221 has a plurality of workpieces distributed therein along the longitudinal direction at the same time, and in this embodiment, three workpieces can be mounted at the same time. The output shaft of the driving member 23 is fixedly connected with a connecting seat 3, and the clamping frame 22 is connected to the output shaft of the driving member 23 through the connecting seat 3. Two guide strips 4 are vertically and downwards fixed on the moving arm 211 of the travelling crane 21, and the two guide strips 4 are distributed at two ends of the connecting seat 3 along the length direction of the annular frame 221. The both ends of connecting seat 3 distribute and are provided with a pair of leading wheel 5, and two leading wheels 5 are located 4 both sides of gib block respectively and support tightly to lead connecting seat 3 and the slip of holding frame 22 on gib block 4.

As shown in fig. 3 and 4, the plurality of lower supporting members 222 are fixed to the inner wall of the lower end of the annular frame 221, and are horizontally distributed along the length direction of the annular frame 221. Nine lower support members 222 are provided in this embodiment, and each workpiece is provided corresponding to three lower support members 222. The lower supporting members 222 are made of plastic, and each lower supporting member 222 includes a fixing portion 2221 disposed on the ring frame 221, and two side supporting rods 2222 fixed to the upper end surface of the fixing portion 2221. The support bars 2222 are cylindrical and gradually decrease toward the direction away from the fixing portion 2221, and the two support bars 2222 gradually decrease toward the direction away from the fixing portion 2221 so that the positioning groove 6 is a V-shaped groove, and the positioning groove 6 is mainly used for the embedding and positioning of the lower end of the workpiece.

As shown in fig. 3 and 5, a plurality of upper clamps 223 are fixed to the upper end of the ring frame 221 and are horizontally distributed along the length direction of the ring frame 221. The upper clamp 223 is provided with six and each workpiece is provided with two upper clamps 223. The upper clamps 223 are fixed to the upper end of the ring frame 221, and each upper clamp 223 includes a fixing clamp portion 2231 fixed to the ring frame 221, a hinge clamp portion 2232 hinged to the fixing portion 2221, and a torsion spring 2233 connected between the fixing clamp portion 2231 and the hinge clamp portion 2232. The fixed clamp portion 2231 and the hinge clamp portion 2232 are disposed downward, and the torsion spring 2233 makes one end of the hinge clamp portion 2232 away from the hinge axis abut against the fixed clamp portion 2231, so that the upper clamp member 223 is used for clamping a workpiece for positioning. The end face, close to the fixed clamp part 2231, of the hinged clamp part 2232 is provided with a clamping groove 7, the depth of the clamping groove 7 is larger than the thickness of the workpiece, the clamping groove 7 penetrates through the hinged clamp part 2232 downwards, and a rubber pad 8 is arranged at the bottom of the clamping groove 7. The clamping groove 7 can form a space for accommodating a workpiece, then the workpiece is tightly supported on the workpiece through the rubber pad 8, and the condition that the surface of the workpiece is clamped and damaged can be reduced due to elastic deformation of the rubber pad 8.

The upper end of the hinged clip portion 2232 is also connected to a handle 9, and the handle 9 extends obliquely upward away from the fixed clip portion 2231. The hinged clamp portions 2232 of the two upper clamping pieces 223 clamped on the same workpiece are fixedly connected through a connecting rod 10, and the handles 9 corresponding to the hinged clamp portions 2232 are connected through a fixed rod 11. The hinged clamp portions 2232 and the handles 9 corresponding to the hinged clamp portions 2232 are connected by the connecting rod 10 and the fixing rod 11, and the hinged clamp portions 2232 holding the same workpiece can be turned over and opened or held at the same time by operating one of the handles 9.

The working principle of the embodiment is as follows:

when the cleaning line is used before gold plating of the circuit board, the workpiece is clamped on the clamping frame 22, and the workpiece on the clamping frame 22 is driven by the travelling crane 21 to be sequentially immersed into the water tanks 1 for sequential rinsing, so that the whole cleaning is more convenient. In addition, since the lower support 222 supports the weight of the workpiece, the upper clamping member 223 above mainly plays a role in centering and positioning, and the clamping force on the workpiece is small, so that the situation that the surface of the workpiece is clamped and damaged is reduced.

Example two:

a cleaning line before gold plating of a circuit board is different from the first embodiment in that the moving path of an annular frame 221 is different.

As shown in fig. 6 and 7, two holding frames 22 are provided, and the two holding frames 22 are distributed along the moving direction of the moving arm 211 of the traveling crane 21. Two guide plates 12 are fixed to the lower end surface of the moving arm 211 of the traveling crane 21, and the two guide plates 12 are respectively located at two ends of the annular frame 221 in the horizontal direction. The end faces of the two guide plates 12 close to the annular frame 221 are provided with waved guide grooves 13 along the vertical direction, two guide grooves 13 are arranged on each guide plate 12, and the waved shapes of the two guide grooves 13 are symmetrically distributed in the horizontal direction. Extension rods 14 are fixed to both ends of each annular frame 221 in the horizontal direction, and the extension rods 14 are arranged near the top ends of the annular frames 221. Each extension rod 14 is correspondingly inserted into the guide groove 13, and the extension rods 14 at both ends of each ring frame 221 are engaged with the corresponding guide grooves 13 of the two guide plates 12. The extension rod 14 penetrates into the guide groove 13 and is correspondingly sleeved with a bearing 15, the extension rod 14 rubs with the side wall of the guide groove 13 through the bearing 15, and friction resistance is reduced through rolling of the bearing 15.

The two annular frames 221 are connected with the connecting strip 16 near the lower ends, two ends of the connecting strip 16 are respectively hinged with the annular frames 221, and the connecting strip 16 is provided with two ends respectively located at the two ends of the annular frames 221 along the length direction in the embodiment. A hinge member 17 is further connected between the driving member 23 and the two clamping frames 22, and the hinge member 17 includes a hinge seat 171 fixedly connected to the output shaft of the driving member 23, and a hinge rod 172 having one end hinged to the hinge seat 171 and the other end hinged to the corresponding annular frame 221. The hinge seats 171 are located between the two holder blocks 22 and are disposed higher than the top ends of the holder blocks 22, and each hinge rod 172 is disposed obliquely downward from one end of the hinge seat 171 to one end of the holder block 22.

The working principle of the embodiment is as follows:

when the workpieces on the two holding frames 22 are cleaned, the piston rods of the driving members 23 are extended, and the annular frame 221 moves downwards under the action of the driving members 23 in cooperation with the gravity, so that the workpieces on the annular frame 221 are immersed into the water tank 1. In the downward moving process, the extension rod 14 on the annular frame 221 is matched with the guide groove 13 to enable the annular frame 221 to swing, at the moment, the workpiece swings along with the annular frame 221, and the cleaning liquid impacts the opposite end face of the workpiece in the swinging process of the workpiece, so that the cleaning effect is better.

When the driving member 23 drives the hinge seat 171 to move upward, the hinge rod 172 of the hinge seat 171 can drive the annular frame 221 to move upward, and at this time, the extension rods 14 at the two ends of the annular frame 221 rise along the guide groove 13, so that the upper end of the annular frame 221 swings, the annular frame 221 swings to drive the workpiece to swing, and the workpiece swings to throw away the cleaning liquid adhered to the workpiece, thereby reducing the pollution condition of the cleaning liquid in the previous water tank 1 to the next water tank 1 in the cleaning process.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a cleaning line before gilding of circuit board, including a plurality of water tanks (1) that set gradually, be used for putting into a plurality of water tanks (1) in proper order with the work piece and carry out conveying subassembly (2) of rinsing, conveying subassembly (2) including driving (21), slide in removal arm (211) below of driving (21) and be used for centre gripping work piece holding frame (22) along vertical direction, set up driving piece (23) that drive holding frame (22) and reciprocate on driving (21) removal arm (211), its characterized in that: the clamping frame (22) comprises an annular frame (221), a lower support piece (222) and an upper clamping piece (223); the annular frame (221) is connected to the traveling crane (21) in a sliding manner, and the upper inner side wall and the lower inner side wall of the annular frame (221) are arranged horizontally and in parallel; the lower supporting piece (222) is arranged on the lower end of the annular frame (221), and a positioning groove (6) for embedding a workpiece is formed in the upper end face of the lower supporting piece (222); the upper clamping piece (223) is fixed at the upper end of the annular frame (221), and the upper clamping piece (223) is used for clamping a workpiece to be positioned;

the lower end surface of the moving arm (211) of the travelling crane (21) is provided with two guide plates (12), the two guide plates (12) are respectively positioned at the two ends of the annular frame (221) in the horizontal direction, the end surface of the guide plate (12) close to the annular frame (221) is provided with a waved guide groove (13) along the vertical direction, the two ends of the annular frame (221) along the horizontal direction are both fixed with extension rods (14), the extension rod (14) is correspondingly arranged by penetrating into the guide groove (13), a hinge piece (17) is connected between the driving piece (23) and the clamping frame (22), the hinged part (17) comprises a hinged seat (171) connected to the driving part (23), a hinged rod (172) with one end hinged to the hinged seat (171) and the other end hinged to the annular frame (221), and the extension rod (14) is arranged close to the top end of the annular frame (221);

two guide grooves (13) in each guide plate (12) are symmetrically distributed in the horizontal direction, two clamping frames (22) are arranged, the hinge rods (172) and the extension rods (14) are correspondingly arranged, and the extension rods (14) in each annular frame (221) are correspondingly matched with the two guide grooves (13); the hinge piece (17) is positioned between the two clamping frames (22), and each hinge rod (172) is obliquely and downwards arranged from one end of the hinge seat (171) to one end of the clamping frame (22); two the annular frame (221) are close to lower extreme department and are connected with connecting strip (16), the both ends of connecting strip (16) are articulated with annular frame (221) respectively.

2. The pre-gold plating cleaning line for the circuit board according to claim 1, wherein: the lower supporting piece (222) is provided with a plurality of along the horizontal direction, and every lower supporting piece (222) is including setting up fixed part (2221) on annular frame (221), two side support bars (2222) that are fixed in fixed part (2221) up end, and two bracing pieces (2222) are kept away from the setting gradually towards the direction of keeping away from fixed part (2221) and are made constant head tank (6) are the V-arrangement groove.

3. The pre-gold plating cleaning line for the circuit board according to claim 2, wherein: the lower support piece (222) is made of plastic, and the support rod (2222) is cylindrical and gradually decreases in the direction away from the fixing portion (2221).

4. The pre-gold plating cleaning line for the circuit board according to claim 1, wherein: go up holder (223) and be provided with a plurality ofly along the horizontal direction, every is gone up holder (223) and all includes that fixed clamp portion (2231) on being fixed in annular frame (221), articulate articulated clamp portion (2232) on fixed part (2221), connect and make articulated clamp portion (2232) centre gripping work piece in torsional spring (2233) of fixed clamp portion (2231) between fixed clamp portion (2231) and articulated clamp portion (2232), the upper end of articulated clamp portion (2232) still is connected with handle (9), handle (9) are upwards extending towards keeping away from fixed clamp portion (2231) and being the slope.

5. The pre-gold plating cleaning line for the circuit board according to claim 4, wherein: articulated clamp portion (2232) are close to the terminal surface of fixed clamp portion (2231) and have been seted up centre gripping groove (7), the degree of depth in centre gripping groove (7) is greater than the thickness of work piece just centre gripping groove (7) run through articulated clamp portion (2232) setting downwards, the tank bottom of centre gripping groove (7) is provided with rubber pad (8).

6. The pre-gold plating cleaning line for the circuit board according to claim 5, wherein: hinged clamp parts (2232) of a plurality of upper clamping pieces (223) clamped on the same workpiece are fixedly connected through a connecting rod (10), and handles (9) corresponding to the hinged clamp parts (2232) are connected through a fixing rod (11).

7. The pre-gold plating cleaning line for the circuit board according to claim 1, wherein: the extending rod (14) penetrates into the guide groove (13) and is correspondingly sleeved with a bearing (15).