CN214300437U

CN214300437U - Clamping device for electroplating low-voltage circuit board

Info

Publication number: CN214300437U
Application number: CN202120135789.7U
Authority: CN
Inventors: 陈铭宗; 顾照祥
Original assignee: Suzhou Heen Electrical And Mechanical Co ltd
Current assignee: Suzhou Heen Electrical And Mechanical Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-09-28
Anticipated expiration: 2031-01-19

Abstract

The utility model discloses a low pressure circuit board is electroplated and is used clamping device belongs to electroplating jig technical field, the electric iron comprises a handle, the top sliding connection of handle has the push rod, the bottom of push rod runs through and extends to the inside of handle, the outside fixedly connected with limiting plate of push rod, the outside cover of push rod is equipped with tension spring, tension spring's top and bottom respectively with the inner wall and the limiting plate fixed connection of handle. The utility model discloses a, press the board through pressing, can drive the ejector pin and promote the inside of slider withdrawal spout to make the push rod can the rebound, accomplish the unblock, and tension spring's pulling force drives limiting plate rebound, makes the push rod rebound, and the drive connecting rod is upwards, makes two hinge bars drive two splint upwards, makes the bottom rebound of two pull rods, because the top rigidity of pull rod, makes the inclination increase of two pull rods, drives two splint and keeps away from each other, keeps the open mode, is convenient for wash.

Description

Clamping device for electroplating low-voltage circuit board

Technical Field

The utility model relates to an electroplating jig technical field, more specifically say, relate to a clamping device is used in low pressure circuit board electroplating.

Background

In the electroplating industry, an electroplating clamp clamps an electroplating workpiece through two clamping plates and then extends into electroplating solution for electroplating.

Electroplating jig is the must instrument in the circuit board electroplating process for smuggle the circuit board that has attached to the chemical medicine secretly, electroplating jig's chuck needs to possess corrosion resisting property, among the prior art, when electroplating circuit board, because multiple chemical medicine remains easily in the chuck of anchor clamps, need wash the anchor clamps chuck, when anchor clamps are in closed state, inside remaining medicine is hardly washd, but present anchor clamps chuck can't keep open state always, unless the purger continues the application of force, cleaning work is difficult to carry out.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a low pressure circuit board is electroplated and is used clamping device possesses the operation more convenient, can keep opening the abluent advantage of state being convenient for, has solved present anchor clamps chuck and can't keep opening the state always, unless the purger lasts the application of force, the problem that cleaning work is difficult to go on.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A clamping device for electroplating a low-voltage circuit board comprises a handle, wherein the top of the handle is slidably connected with a push rod, the bottom of the push rod penetrates through and extends to the inside of the handle, a limiting plate is fixedly connected to the outside of the push rod, a tension spring is sleeved outside the push rod, the top and the bottom of the tension spring are respectively fixedly connected with the inner wall of the handle and the limiting plate, the bottom of the push rod is fixedly connected with a connecting rod, the bottom of the connecting rod penetrates through and extends to the bottom of the handle, the inner wall of the handle is fixedly connected with two clamping plates, the inside of the push rod is slidably connected with a locking assembly, the left side of the locking assembly penetrates through and extends to the lower part of the clamping plates, the left side of the handle is slidably connected with an unlocking assembly, the right side of the unlocking assembly extends to the lower part of the clamping plates and contacts with the locking assembly, and the bottom of the handle is slidably connected with two telescopic rods, the equal fixedly connected with splint in bottom of two telescopic links, two the inside of splint is all rotated and is connected with the dwang, two the outside of dwang is all rotated and is connected with the hinge bar, two the bottom of hinge bar all is articulated with the connecting rod, the bottom of handle articulates there are two pull rods, two the back of dwang runs through respectively and extends to the back of two splint, two the bottom of pull rod is fixed connection respectively in the outside of two dwangs, two the pull rod is located the back of two splint respectively.

Preferably, the locking assembly comprises a supporting spring and a sliding block, a sliding groove is formed in the left side of the push rod, the top and the bottom of the supporting spring are fixedly connected with the sliding block and the inner wall of the sliding groove respectively, and the left side of the sliding block penetrates through and extends to the left side of the push rod and contacts with the unlocking assembly.

Preferably, the unlocking assembly comprises an ejector rod, a top plate, a pressing plate and a first spring, the left side and the right side of the ejector rod are fixedly connected with the pressing plate and the top plate respectively, the right side of the ejector rod penetrates through the inside of the handle and is in contact with the sliding block, the first spring is sleeved on the outer portion of the ejector rod, and the left side and the right side of the first spring are fixedly connected with the pressing plate and the handle respectively.

Preferably, two equal sliding connection in relative one side of splint has two bracing pieces, four the outside of bracing piece is all overlapped and is equipped with the second spring, adjacent two one side fixedly connected with backup pad, four that splint were kept away from to the bracing piece the both ends of second spring are equallyd divide do not with backup pad and splint fixed connection.

Preferably, the clamping plate and the supporting plate are fixedly connected with an anti-corrosion sleeve at the outer part, and one side of the anti-corrosion sleeve close to the supporting plate is corrugated.

Preferably, the telescopic link includes slide bar and sleeve pipe, slide bar sliding connection is in sheathed tube inside, the bottom of slide bar extends to sheathed tube outside and with splint fixed connection, sheathed tube top and handle fixed connection.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) the scheme is that the handle is arranged to hold the circuit board, the top of the handle is slidably connected with a push rod, the push rod is pressed downwards to drive the connecting rod to slide downwards, the bottoms of the two hinged rods are hinged with the connecting rod to enable the bottoms of the two hinged rods to move downwards, the two hinged rods are hinged with the clamping plates through the rotating rods to drive the two clamping plates to move downwards, the clamping plates are hinged with the pull rod through the rotating rods to enable the bottoms of the pull rods to move downwards, the length of the telescopic rod is unchanged, the top position of the pull rod is fixed, the bottom of the pull rod enables the inclination angle of the pull rod to be reduced downwards, so that the two clamping plates are driven to approach each other to clamp and fix the circuit board, the bottom of the handle is slidably connected with the telescopic rod, the telescopic rod can support in the process that the clamping plates move upwards and downwards, the clamping plates are kept in a vertical state in the clamping process, and when the push rod moves downwards, the locking component can be driven to move downwards, the clamping plate is fixedly connected to the inside of the handle, the bottom of the sliding block in the locking component is arc-shaped, so that the clamping plate can push the sliding block to retract into the sliding groove, when the locking component slides to the lower side of the clamping plate, the sliding block can be supported to the outside of the sliding groove by the supporting spring, the sliding block is extended to the left clamping plate of the push rod to be clamped, so that the push rod cannot move upwards, the position of the connecting rod is further locked, the positions of the two hinged rods, the two pull rods and the two clamping plates are fixed, the two clamping plates can keep a clamping and fixing state to carry out electroplating work, the clamping process only needs to press the push rod by a thumb, the operation is simple and convenient, when a circuit board needs to be loosened, the press plate in the unlocking component is only needed to press, the ejector rod can be driven to slide towards the inside of the handle, the ejector rod is fixedly connected with the top plate, so that the top plate can push the sliding block to retract into the sliding groove, thereby make the push rod can the lapse, accomplish the unblock, and the outside cover of push rod is equipped with tension spring, and tension spring's pulling force drives the limiting plate rebound, makes the push rod rebound, and it is upwards to drive the connecting rod, makes two hinge bars drive two splint upwards to make the bottom rebound of two pull rods, the top rigidity of two pull rods makes the inclination increase of two pull rods, drives two splint and keeps away from each other, keeps the open mode, is convenient for wash.

(2) This scheme, through the top and the bottom that set up supporting spring respectively with the inner wall fixed connection of slider and spout, supporting spring plays the supporting role this moment, can support the slider to the outside of spout, makes the slider extend to the left side cardboard of push rod and blocks to make the push rod can't shift up, and then the position of locking push rod.

(3) This scheme, run through the handle and contact with the slider through setting up the ejector pin, make and promote the board and can drive the ejector pin and slide to the handle is inside, ejector pin and roof fixed connection, make the roof can promote the inside of slider withdrawal spout, thereby make the push rod can upwards slide, reach the purpose of removing the joint between locking subassembly and the cardboard, the left and right sides of first spring respectively with board and handle fixed connection, when making not to board and ejector pin application of force, first spring can support the board and slide left, make the ejector pin slide left, break away from the contact with the slider, thereby make the locking subassembly can keep the lock-up state.

(4) This scheme, through setting up bracing piece sliding connection in the inside of splint, make the bracing piece can stretch out and draw back the regulation, the second spring can be close to the circuit board to holding the backup pad during the centre gripping, and fixed with the circuit board centre gripping, and because the elastic force of centre gripping fixed process dependence second spring, so can not take place the problem of loosening the circuit board because of vibrations produce, also avoided the circuit board to cause the damage because of the atress is uneven.

(5) This scheme can play the effect that prevents acid-base solution corruption metal splint through setting up the cover that anticorrosives, has insulating effect in addition to make splint not receive the electroplating influence, can increase of service life, one section that sets up the cover that anticorrosives is the corrugate, makes the cover that anticorrosives can fold, thereby makes the cover that anticorrosives can stretch out and draw back the regulation.

(6) This scheme through setting up slide bar sliding connection in sheathed tube inside, makes the telescopic link can extend and contract when connection support handle and splint.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

fig. 2 is a back view of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

fig. 4 is an enlarged view of the point B in fig. 1 according to the present invention.

The reference numbers in the figures illustrate:

1. a grip; 2. a push rod; 3. a connecting rod; 4. clamping a plate; 5. a locking assembly; 51. a support spring; 52. a slider; 6. an unlocking assembly; 61. a top rod; 62. a top plate; 63. a first spring; 64. pressing a plate; 7. a pull rod; 8. rotating the rod; 9. a splint; 91. a support bar; 92. a second spring; 93. a support plate; 10. a hinged lever; 11. a tension spring; 12. a limiting plate; 13. an anti-corrosion sleeve; 14. a telescopic rod.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a clamping device for electroplating a low-voltage circuit board comprises a handle 1, a push rod 2 is slidably connected to the top of the handle 1, the bottom of the push rod 2 penetrates through and extends into the handle 1, a limit plate 12 is fixedly connected to the outside of the push rod 2, a tension spring 11 is sleeved on the outside of the push rod 2, the top and the bottom of the tension spring 11 are respectively and fixedly connected to the inner wall of the handle 1 and the limit plate 12, a connecting rod 3 is fixedly connected to the bottom of the push rod 2, the bottom of the connecting rod 3 penetrates through and extends to the bottom of the handle 1, two clamping plates 4 are fixedly connected to the inner wall of the handle 1, a locking assembly 5 is slidably connected to the inside of the push rod 2, the left side of the locking assembly 5 penetrates through and extends to the lower side of the clamping plates 4, an unlocking assembly 6 is slidably connected to the left side of the handle 1, the right side of the unlocking assembly 6 extends to the lower side of the clamping plates 4 and contacts with the locking assembly 5, the bottom of the handle 1 is slidably connected with two telescopic rods 14, the bottoms of the two telescopic rods 14 are fixedly connected with clamping plates 9, the interiors of the two clamping plates 9 are rotatably connected with rotating rods 8, the exteriors of the two rotating rods 8 are rotatably connected with hinge rods 10, the bottoms of the two hinge rods 10 are hinged with connecting rods 3, the bottom of the handle 1 is hinged with two pull rods 7, the back surfaces of the two rotating rods 8 penetrate and extend to the back surfaces of the two clamping plates 9 respectively, the bottoms of the two pull rods 7 are fixedly connected with the exteriors of the two rotating rods 8 respectively, the two pull rods 7 are positioned on the back surfaces of the two clamping plates 9 respectively, the handle 1 can be held by arranging the handle 1, the top of the handle 1 is slidably connected with a push rod 2, the push rod 2 is pressed downwards, the connecting rod 3 can be driven to slide downwards, the bottoms of the two hinge rods 10 are hinged with the connecting rod 3, so that the bottoms of the two hinge rods 10 move downwards, the two hinged rods 10 are hinged with the clamping plates 9 through the rotating rods 8, so that the two clamping plates 9 can be driven to move downwards, the clamping plates 9 are hinged with the pull rod 7 through the rotating rods 8, the bottom of the pull rod 7 also moves downwards, the length of the pull rod 7 is unchanged, the top position of the pull rod 7 is fixed, the bottom of the pull rod 7 downwards reduces the inclination angle of the pull rod 7, so that the two clamping plates 9 are driven to approach each other to clamp and fix the circuit board, the bottom of the handle 1 is slidably connected with the telescopic rod 14, the telescopic rod 14 can support in the process that the clamping plates 9 move up and down, the clamping plates 9 are kept in a vertical state in the clamping process, when the push rod 2 moves downwards, the locking assembly 5 can be driven to move downwards, the clamping plates 4 are fixedly connected with the inside of the handle 1, and because the bottom of the sliding blocks 52 in the locking assembly 5 is arc-shaped, the clamping plates 4 can push the sliding blocks 52 to retract into the sliding grooves, when the locking assembly 5 slides to the lower part of the clamping plate 4, the supporting spring 51 can support the sliding block 52 to the outside of the sliding groove, so that the sliding block 52 extends to the left clamping plate 4 of the push rod 2 to be clamped, thereby the push rod 2 can not move upwards, further the position of the connecting rod 3 is locked, the positions of the two hinged rods 10, the two pull rods 7 and the two clamping plates 9 are fixed, the two clamping plates 9 can keep a clamping and fixing state to carry out electroplating work, the clamping process only needs to press the push rod 2 by a thumb, the operation is simple and convenient, when the circuit board needs to be loosened, only the press plate 64 in the unlocking assembly 6 needs to be pressed, the ejector rod 61 can be driven to slide towards the inside of the grip 1, the ejector rod 61 is fixedly connected with the top plate 62, the top plate 62 can push the sliding block 52 to retract into the sliding groove, thereby the push rod 2 can slide upwards to complete unlocking, and the outer sleeve of the push rod 2 is provided with the tension spring 11, the pulling force of tension spring 11 drives limiting plate 12 rebound, makes 2 rebound of push rod, drives connecting rod 3 upwards, makes two hinge bars 10 drive two splint 9 upwards to make the bottom rebound of two pull rods 7, the top rigidity of two pull rods 7 makes the inclination increase of two pull rods 7, drives two splint 9 and keeps away from each other, keeps the open mode, is convenient for wash.

Further, locking Assembly 5 includes supporting spring 51 and slider 52, the spout has been seted up to the left side of push rod 2, supporting spring 51's top and bottom respectively with the inner wall fixed connection of slider 52 and spout, slider 52's left side is run through and is extended to the left side of push rod 2 and contact with unblock subassembly 6, through the top and the bottom that set up supporting spring 51 respectively with the inner wall fixed connection of slider 52 and spout, supporting spring 51 plays the supporting role this moment, can support slider 52 to the outside of spout, make slider 52 extend to the left side cardboard 4 of push rod 2 and block, thereby make push rod 2 unable move up, and then the position of locking push rod 2.

Further, the unlocking assembly 6 comprises a push rod 61, a top plate 62, a press plate 64 and a first spring 63, the left side and the right side of the push rod 61 are respectively fixedly connected with the press plate 64 and the top plate 62, the right side of the push rod 61 penetrates into the interior of the handle 1 and contacts with the sliding block 52, the first spring 63 is sleeved outside the push rod 61, the left side and the right side of the first spring 63 are respectively fixedly connected with the press plate 64 and the handle 1, the push rod 61 penetrates through the handle 1 and contacts with the sliding block 52, so that the push plate 64 can drive the push rod 61 to slide towards the interior of the handle 1, the push rod 61 is fixedly connected with the top plate 62, the top plate 62 can push the sliding block 52 to retract into the interior of the sliding groove, the push rod 2 can slide upwards, the purpose of releasing the clamping between the locking assembly 5 and the clamping plate 4 is achieved, the left side and the right side of the first spring 63 are respectively fixedly connected with the press plate 64 and the handle 1, so that when no force is applied to the press plate 64 and the push rod 61, the first spring 63 can support the pressing plate 64 to slide leftward, so that the top rod 61 slides leftward out of contact with the sliding block 52, thereby maintaining the locking assembly 5 in a locked state.

Further, equal sliding connection in relative one side of two splint 9 has two bracing pieces 91, the outside of four bracing pieces 91 is all overlapped and is equipped with second spring 92, one side fixedly connected with backup pad 93 that splint 9 was kept away from to two adjacent bracing pieces 91, the both ends of four second springs 92 are equallyd divide do not with backup pad 93 and splint 9 fixed connection, through setting up bracing piece 91 sliding connection in the inside of splint 9, make bracing piece 91 can flexible regulation, second spring 92 can be close to the circuit board to supporting backup pad 93 during the centre gripping, it is fixed with the circuit board centre gripping, and because the clamping fixation process relies on second spring 92's elastic force, so can not take place the problem of unclamping the circuit board because of vibrations produce, also avoided the circuit board to cause the damage because of the atress is uneven.

Further, the outside fixedly connected with of splint 9 and backup pad 93 prevents corrosion cover 13, and one side that corrosion cover 13 is close to backup pad 93 is the corrugate, can play the effect that prevents acid-base solution corrosion metal splint 9 through setting up corrosion cover 13, and insulating effect in addition to make splint 9 not influenced by the electroplating, can increase of service life, one section that sets up corrosion cover 13 is the corrugate, makes corrosion cover 13 can fold, thereby makes corrosion cover 13 can stretch out and draw back the regulation.

Further, telescopic link 14 includes slide bar and sleeve pipe, and slide bar sliding connection is in sheathed tube inside, and the bottom of slide bar extends to sheathed tube outside and with splint 9 fixed connection, sheathed tube top and handle 1 fixed connection, through setting up slide bar sliding connection in sheathed tube inside, makes telescopic link 14 can extend and contract when joint support handle 1 and splint 9.

It should be noted that each device in the present application is a common device in the market, and can be selected according to the requirement when in specific use, and the circuit connection relationship of each device belongs to a simple series and parallel connection circuit, and there is no innovation point in the circuit connection, and those skilled in the art can easily implement the circuit connection, and belong to the prior art, and are not described again.

The working principle is as follows: when the handle is used, firstly, the handle 1 is held, the push rod 2 is pressed downwards by a thumb, at the moment, the push rod 2 slides downwards to drive the connecting rod 3 to slide downwards, the two hinged rods 10 move downwards to drive the two clamping plates 9 to move downwards, the bottom of the pull rod 7 also moves downwards, because the length of the pull rod 7 is unchanged and the top position of the pull rod 7 is fixed, the bottom of the pull rod 7 downwards enables the inclination angle of the pull rod 7 to be reduced, so that the two clamping plates 9 are driven to approach each other to clamp and fix a circuit board, the telescopic rod 14 can support in the process that the clamping plates 9 move up and down, the clamping plates 9 keep a vertical state in the clamping process, when the push rod 2 moves downwards, the locking component 5 can be driven to move downwards, the clamping plate 4 is fixedly connected with the inside of the handle 1, because the bottom of the sliding block 52 in the locking component 5 is arc-shaped, the clamping plate 4 can push the sliding block 52 to retract into the sliding groove, when the locking assembly 5 slides to the lower part of the clamping plate 4, the supporting spring 51 can support the sliding block 52 to the outside of the sliding groove, so that the sliding block 52 extends to the left side of the push rod 2 and the clamping plate 4 is clamped, thereby the push rod 2 can not move upwards, further the position of the connecting rod 3 is locked, the positions of the two hinged rods 10, the two pull rods 7 and the two clamping plates 9 are fixed, so that the two clamping plates 9 can keep a clamping and fixing state to carry out electroplating work, when a circuit board needs to be loosened, only the pressing plate 64 in the unlocking assembly 6 needs to be pressed to drive the ejector rod 61 to slide towards the inside of the grip 1, the sliding block 52 is pushed to retract into the inside of the sliding groove to complete unlocking, so that the push rod 2 can slide upwards, the tension spring 11 is sleeved on the outside of the push rod 2, the tension force of the tension spring 11 drives the limiting plate 12 to move upwards, so that the push rod 2 moves upwards, drives the connecting rod 3 to upwards, so that the two hinged rods 10 drive the two clamping plates 9 upwards, thereby make the bottom rebound of two pull rods 7, the top rigidity of two pull rods 7 makes the inclination increase of two pull rods 7, drives two splint 9 and keeps away from each other, keeps the open mode, is convenient for wash splint 9, has solved present anchor clamps chuck and can't keep opening the state always, unless the cleaning personnel lasts the application of force, the problem that cleaning work is difficult to go on.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a low pressure circuit board is electroplated and is used clamping device, includes handle (1), its characterized in that: the handle is characterized in that the top of the handle (1) is slidably connected with a push rod (2), the bottom of the push rod (2) penetrates through and extends to the inside of the handle (1), a limiting plate (12) is fixedly connected to the outside of the push rod (2), a tension spring (11) is sleeved on the outside of the push rod (2), the top and the bottom of the tension spring (11) are respectively fixedly connected with the inner wall of the handle (1) and the limiting plate (12), a connecting rod (3) is fixedly connected to the bottom of the push rod (2), the bottom of the connecting rod (3) penetrates through and extends to the bottom of the handle (1), two clamping plates (4) are fixedly connected to the inner wall of the handle (1), a locking component (5) is slidably connected to the inside of the push rod (2), the left side of the locking component (5) penetrates through and extends to the lower side of the clamping plates (4), and an unlocking component (6) is slidably connected to the left side of the handle (1), the right side of the unlocking component (6) extends to the lower part of the clamping plate (4) and is contacted with the locking component (5), the bottom of the handle (1) is connected with two telescopic rods (14) in a sliding way, the bottoms of the two telescopic rods (14) are both fixedly connected with clamping plates (9), the interiors of the two clamping plates (9) are both rotatably connected with rotating rods (8), the exteriors of the two rotating rods (8) are both rotatably connected with hinge rods (10), the bottoms of the two hinge rods (10) are both hinged with the connecting rod (3), the bottom of handle (1) articulates there are two pull rods (7), two the back of dwang (8) runs through respectively and extends to the back of two splint (9), two the bottom of pull rod (7) is fixed connection respectively in the outside of two dwang (8), two pull rod (7) are located the back of two splint (9) respectively.

2. The clamping device for electroplating the low-voltage circuit board according to claim 1, wherein: the locking assembly (5) comprises a supporting spring (51) and a sliding block (52), a sliding groove is formed in the left side of the push rod (2), the top and the bottom of the supporting spring (51) are fixedly connected with the sliding block (52) and the inner wall of the sliding groove respectively, and the left side of the sliding block (52) penetrates through and extends to the left side of the push rod (2) and is in contact with the unlocking assembly (6).

3. The clamping device for electroplating the low-voltage circuit board according to claim 2, wherein: the unlocking assembly (6) comprises an ejector rod (61), a top plate (62), a pressing plate (64) and a first spring (63), the left side and the right side of the ejector rod (61) are fixedly connected with the pressing plate (64) and the top plate (62) respectively, the right side of the ejector rod (61) penetrates through the inside of the handle (1) and is in contact with the sliding block (52), the first spring (63) is sleeved on the outside of the ejector rod (61), and the left side and the right side of the first spring (63) are fixedly connected with the pressing plate (64) and the handle (1) respectively.

4. The clamping device for electroplating the low-voltage circuit board according to claim 1, wherein: two equal sliding connection in relative one side of splint (9) has two bracing pieces (91), four the outside of bracing piece (91) all is equipped with second spring (92), adjacent two one side fixedly connected with backup pad (93), four of splint (9) are kept away from in bracing piece (91) the both ends of second spring (92) are equallyd divide do not with backup pad (93) and splint (9) fixed connection.

5. The clamping device for electroplating the low-voltage circuit board according to claim 4, wherein: the outer parts of the clamping plate (9) and the supporting plate (93) are fixedly connected with an anti-corrosion sleeve (13), and one side, close to the supporting plate (93), of the anti-corrosion sleeve (13) is corrugated.

6. The clamping device for electroplating the low-voltage circuit board according to claim 1, wherein: the telescopic rod (14) comprises a sliding rod and a sleeve, the sliding rod is connected inside the sleeve in a sliding mode, the bottom of the sliding rod extends to the outside of the sleeve and is fixedly connected with the clamping plate (9), and the top of the sleeve is fixedly connected with the grip (1).