CN118127604A - Clamping jig for electroplating automobile radiating fin - Google Patents

Abstract

The invention discloses a clamping jig for electroplating an automobile radiating fin, which relates to the technical field of electroplating of automobile radiating fins and comprises a bracket, wherein a torsion component is arranged in the middle of the bracket, a clamp is arranged at the bottom of the torsion component, a fixing component is symmetrically arranged at the bottom of the clamp in a left-right mode, an elastic band is arranged on the clamp in a surrounding sleeve bundle, the torsion component comprises a hanging plate, and a clamping head is fixedly connected with the middle of the top end of the hanging plate. This clamping tool for car fin electroplates not only is applicable to the clamping operation of the fin of a single specification, can effectively change the biggest and minimum clamping operation scope of anchor clamps, through the mode with the help of pneumatic drive, eliminates the hardness adjustment of fixed subassembly motion in-process, even the fin body shape is too big and can't the clamping between splint and fixed plate, also can not cause excessive hard striking and damage to the fin, can not cause sustainable backlog to the fin to damage yet.

Description

A clamping fixture for electroplating of automobile radiator

Technical Field

The invention relates to the technical field of automobile radiator electroplating, in particular to a clamping fixture for automobile radiator electroplating.

Background technique

Automobile radiator is a device for dissipating heat from heat-prone parts in automobiles. It is mostly made of aluminum alloy, brass or bronze in the form of plates, sheets, or multiple sheets. During the production process, radiators often need to be electroplated, which is a process of plating a thin layer of other metals or alloys on certain metal surfaces using the principle of electrolysis. It is a process of using electrolysis to adhere a layer of metal film to the surface of metal or other material parts, thereby preventing corrosion, improving wear resistance, conductivity, reflectivity, and enhancing aesthetics. This process can effectively improve the performance and appearance of automobile parts.

However, the existing fixtures used for electroplating of automobile radiators are mostly common fixtures on the market. Not only are the specifications and types of the radiators clamped single, the clamping operation range cannot be flexibly adjusted, and the radiators will be impacted and damaged during the clamping process, resulting in the surface of the radiator being damaged and unable to continue to be used.

Summary of the invention

In order to solve the above technical problems, the present invention is implemented through the following technical solutions: A clamping fixture for electroplating of automobile heat sinks, comprising a bracket, a torsion component is installed in the middle of the bracket, a clamp is installed at the bottom of the torsion component, a fixing component is installed at the bottom of the clamp in a bilaterally symmetrical shape, and an elastic band is wrapped around the clamp to elastically block and shield the front and rear positions of the middle of the heat sink to prevent the heat sink from shaking locally on the clamp;

The torsion assembly includes a hanging plate, a clamp is fixedly connected to the middle of the top of the hanging plate, an electric push rod is symmetrically connected to the bottom of the hanging plate, a pressing plate is connected to the telescopic end of the electric push rod, and the pressing plate is used to clamp the top of the heat sink;

The fixing assembly includes a clamping plate, a folding plate clamp is fixedly connected to the clamping plate, a fixing plate is installed on the horizontal plate portion of the folding plate clamp, gas rods are symmetrically installed on the vertical plate portion of the folding plate clamp, the telescopic ends of the gas rods are connected to the fixing plate, and the fixing plate cooperates with the clamping plate on the folding plate clamp through the gas rods to clamp and fix the front and rear of the heat sink.

Preferably, the bracket includes an arch frame, and two groups of support plates are threadedly installed on the left and right sides of the bottom end of the arch frame in a left-right symmetrical manner, and locking pins are installed on the opposite sides of the two groups of support plates in a centrally symmetrical manner. A main air valve is fixedly installed in the middle of the front end of the arch frame, and a motor and an annular frame are fixedly installed in the middle of the bottom end of the arch frame. The annular frame is installed around the motor, and the bottom of the annular frame is socketed with the chuck, and the output end of the motor is connected to the middle of the top end of the chuck.

Preferably, a prism sleeve is embedded and installed in the middle part of one end of the support plate away from the arch frame, and two connecting rod heads are rotatably clamped in the prism sleeve in a left-right symmetrical manner, and a double-headed pin is installed between the two connecting rod heads, and both ends of the double-headed pin are equipped with extrusion springs. The extrusion spring is provided to separate the two ends of the double-headed pin from the connecting rod head when the connecting rod head is in non-axial extrusion, so that the double-headed pin is installed on the inner side of the prism sleeve with the help of two groups of connecting rod heads under the action of the extrusion spring; the two ends of the double-headed pin are inserted into the opposite side surfaces of the two connecting rod heads, and the connecting rod head is threadedly installed with the support plate through the double-headed pin, and octagonal grooves are provided in the middle parts of the left and right ends of the connecting rod head, and the double-headed pin is embedded with the connecting rod head through the octagonal grooves.

Preferably, the clamp includes a crossbeam frame, and the crossbeam frame is fixedly connected to the bottom of the electric push rod, the telescopic end of the electric push rod passes through the crossbeam frame and is connected to the pressure plate, frames are installed on both ends of the left and right ends of the crossbeam frame, a telescopic plate is telescopically connected to the inner middle part of the frame, a long screw rod is installed on the top of the telescopic plate and the side facing the crossbeam frame, the long screw rod is threadedly connected to the crossbeam frame, and a support plate is installed at the bottom between the two groups of frames.

Preferably, a short edge is fixedly installed in the middle of the top of the support plate, and the cross-section of the short edge is a triangular prism. Ball valves are fixedly installed on the front and rear sides of the top of the support plate, a bottom plate is fixedly installed on the bottom end of the support plate, side edges are fixedly installed on the front and back faces of the support plate, and a sleeve rail is fixedly installed on the inner middle part of the support plate.

Preferably, a jet valve nozzle is fixedly installed in the injection port of the ball valve, and the jet valve nozzle is made of plastic as a whole. A hemispherical hard film recessed toward the inner side of the ball valve is provided in the middle of the jet valve nozzle. The specific structure refers to the principle of a heart valve. In the initial state, the hard film is in a closed state recessed toward the inner side of the ball valve. When opened, it is pushed open by the air ejected from the injection port of the ball valve. At this time, the hard film is in an open state facing the opposite direction of the ball valve. The hard film is used to block gas and liquid from directly entering the injection port of the ball valve.

Preferably, a valve tube is also fixedly installed on the vertical plate of the folding plate clamp, and the output end of the valve tube is connected to the input end of the gas rod, a diverter valve stem is connected between the clamping plate and the vertical plate of the folding plate clamp, and the diverter valve stem is connected to the valve tube through the folding plate clamp, the diverter valve stem is limitedly installed between the support plate and the bottom plate, the connection between the clamping plate and the folding plate clamp is fitted on the bottom of the bottom plate, the vertical plate structures of the clamping plate and the folding plate clamp are fitted and slid with the support plate through the side edges, a telescopic bellows is connected to the diverter valve stem, the telescopic bellows is slidably sleeved in the sleeve rail, the middle parts of the left and right ends of the crossbeam frame and the support plate are threadedly installed with ball head pipes, the middle parts of the inner sides of the frame and the telescopic plate and the middle part between the crossbeam frame and the hanging plate are connected with straight guide tubes, the diverter valve stem is connected to the main gas valve through the cooperation of the telescopic bellows, the ball head pipes and the straight guide tubes;

The frame is threadedly connected to the support plate through a ball head pipe, the telescopic plate is threadedly connected to the crossbeam frame through a ball head pipe, and the ball head valve is connected to the ball head pipe through the support plate;

Among them, the straight conduit connected in the middle between the crossbeam frame and the hanging plate cooperates with the output end of the motor through the middle of the clamp and passes through the arch frame to be connected with the main air valve.

Preferably, a cone bar is fixedly installed on one side of the clamp facing the folding plate clamp, and an elastic bar is fixedly connected to the side of the cone bar, and the elastic bar is arched and not in direct contact with the elastic bar, and the axis where the center of the elastic bar is located is perpendicular to the axis where the cone bar is located.

Preferably, ear plates are hinged on both ends of the fixed plate, and a torsion spring is installed at the hinged portion of the ear plate and the fixed plate. A hook is fixedly connected to the side of the fixed plate facing the ear plate, and the middle part of the torsion spring is hooked on the hook. The ear plate is flipped on the fixed plate toward the side close to the splint through the torsion spring, and a spherical shell is installed in a linear array on the side of the fixed plate facing the splint, and the spherical shell is a hollow structure made of elastic metal material.

Preferably, the elastic band is wrapped around the front and rear inner walls of the clamp and is fixedly mounted with ribs, which are protruded from the surface of the elastic band. The head and tail ends of the elastic band are fixedly connected with Velcro for sticking the head and tail ends of the elastic band together, so as to wrap the elastic band around the clamp as a whole and limit the front and rear positions of the heat sink on the clamp.

The present invention provides a clamping fixture for electroplating of automobile radiator, which has the following beneficial effects:

1. The clamping fixture for electroplating of automobile radiator can blow air to the radiator through the ball valve after the electroplating is completed, so as to blow off the plating liquid attached to the surface of the radiator, accelerate the speed of the plating liquid falling off, improve the efficiency of cleanly removing the radiator from the plating liquid, speed up the electroplating process of the radiator, improve the overall efficiency of the electroplating process of the radiator, increase the total production volume, and at the same time, ensure the electroplating quality of the radiator.

2. The clamping fixture for electroplating of automobile radiator eliminates the abrupt adjustment of the fixed component during the movement by means of pneumatic transmission. Even if the radiator is too large to be clamped between the clamping plate and the fixed plate, it will not cause excessive hard impact and damage to the radiator, nor will it cause continuous backlog damage to the radiator. In addition, by means of the retractability of the telescopic bellows, it gains reaction time for timely shutting down the delivery of high-pressure gas. It can timely block the hard clamping and damage of the radiator by the fixed component by shutting off the high-pressure air delivered to the main air valve, thereby realizing a flexible clamping protection for the radiator and providing a remedial opportunity for timely adjustment of the clamping method.

3. The clamping fixture for electroplating of automobile radiators installs spring bars between the cone bars and the radiator, and uses the spring bars and the cone bars to form a grid-like elastic shielding and protection structure, which elastically shields and protects the back of the radiator squeezed on the clamping plate, avoiding hard collision between the radiator and the clamping plate when the radiator is pushed and squeezed onto the clamping plate by the fixed plate, ensuring that the quality of the radiator is not affected.

4. The clamping fixture for electroplating of automobile radiators ensures the stable clamping function of the fixing plate on the radiator without causing additional damage to the radiator. It is also convenient for removing the radiator from the plating solution and draining it after the electroplating is completed, without leaving the plating solution on the fixture.

5. The clamping fixture for electroplating of automobile radiators can complete the docking assembly between various clamping fixtures, can be used for combined clamping of different types of radiators, can effectively expand the total clamping operation of the clamping fixture, and realize the synchronous clamping and synchronous electroplating operations of multiple radiators.

6. The clamping fixture for electroplating of automobile radiators will also adjust the other assembly clamping fixture assembled adjacent to the current clamping fixture to the same angle or the opposite angle, so as to comprehensively utilize the two assembly clamping fixtures to jointly clamp larger radiators or radiators with special structures. At this time, the two groups of fixing components on each clamping fixture are a clamping and fixing structure to clamp and fix the radiator between the two groups of fixing components, thereby realizing the clamping operation of radiators with special structural shapes, realizing another use method of the clamping fixture, and being able to effectively link multiple assembly clamping fixtures to each other to jointly complete the clamping operation of the radiator, so as to realize the adaptation of the clamping fixture to different working conditions.

7. The clamping fixture for electroplating of automobile radiators uses a support plate to support and position the bottom of the radiator. The short edges with a triangular prism-shaped cross-section can lift the bottom of the radiator from the top of the support plate, thereby providing stable support for the bottom of the radiator in the form of line-surface contact, while reducing the area of the radiator that is blocked, so that the entire radiator can be electroplated and dead corners for electroplating are eliminated.

8. The clamping fixture for electroplating automobile radiator has a telescopic installation of the telescopic plate and the frame, which can perform the initial adjustment of the overall clamping height of the fixture for clamping the radiator. The electric push rod can also be used to control the lifting and lowering of the pressure plate inside the fixture, and the local clamping height of the fixture can be adjusted secondary. This allows the fixture to clamp not only larger sized radiators, but also smaller sized radiators. It is not only suitable for the clamping operation of a single specification of radiator, but can also effectively change the maximum and minimum clamping operation range of the fixture.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the external structure of a clamping fixture for electroplating of automobile heat sinks according to the present invention;

FIG2 is a schematic diagram of the structure of a torsion assembly of the present invention;

FIG3 is a schematic diagram of the structure of the arch frame and the support plate of the present invention;

FIG4 is a schematic diagram of the disassembled structure of the connecting rod head and the supporting plate of the present invention;

FIG5 is a schematic structural diagram of the clamp of the present invention;

FIG6 is a schematic structural diagram of a support plate according to the present invention;

FIG7 is a schematic diagram of a partially disassembled structure of a frame and a support plate of the present invention;

FIG8 is a schematic diagram of the disassembled structure of the jet valve nozzle and the ball valve of the present invention;

FIG9 is a schematic structural diagram of a fixing assembly of the present invention;

FIG10 is a schematic structural diagram of a folding plate clamp and a diverter valve stem according to the present invention;

FIG11 is a schematic diagram of a partial structure of a fixing plate of the present invention;

FIG12 is a schematic diagram of the front structure of the fixing plate of the present invention;

FIG. 13 is a schematic diagram of the structure of the elastic band of the present invention.

In the figure: 1, bracket; 2, clamp; 3, torsion assembly; 4, fixing assembly; 5, elastic band; 11, arch frame; 12, support plate; 13, locking pin; 14, main air valve; 15, motor; 16, ring mounting; 17, prism sleeve; 18, double-headed bolt; 19, connecting rod head; 21, crossbeam frame; 22, frame; 23, telescopic plate; 24, long screw rod; 25, support plate; 26, short prism; 27, ball head valve; 28, bottom plate; 29, side prism; 210, Rail sleeve; 211, jet valve nozzle; 31, hanging plate; 32, clamp; 33, electric push rod; 34, pressure plate; 41, clamp; 43, folding plate clamp; 44, fixing plate; 45, gas rod; 46, valve pipe; 47, diverter valve stem; 48, telescopic bellows; 49, ball head pipe; 410, straight conduit; 411, cone strip; 412, spring strip; 441, ear plate; 442, torsion spring; 443, hook; 444, ball shell; 51, rib strip; 52, Velcro.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

In the first embodiment, as shown in FIGS. 1 to 13 , the present invention provides a technical solution: a clamping fixture for electroplating of automobile radiator, comprising a bracket 1, a torsion component 3 is installed in the middle of the bracket 1, a clamp 2 is installed at the bottom of the torsion component 3, a fixing component 4 is installed at the bottom of the clamp 2 in a bilaterally symmetrical manner, and an elastic band 5 is wrapped around the clamp 2;

The torsion assembly 3 includes a hanging plate 31, a clamp 32 is fixedly connected to the middle of the top of the hanging plate 31, an electric push rod 33 is symmetrically connected to the bottom of the hanging plate 31, and a pressing plate 34 is connected to the telescopic end of the electric push rod 33, and the pressing plate 34 is used to clamp the top of the heat sink;

The fixing assembly 4 includes a clamping plate 41, to which a folding plate clamp 43 is fixedly connected, a fixing plate 44 is installed on the horizontal plate portion of the folding plate clamp 43, and gas rods 45 are symmetrically installed on the vertical plate portion of the folding plate clamp 43, and the telescopic ends of the gas rods 45 are connected to the fixing plate 44. The fixing plate 44 cooperates with the clamping plate 41 on the folding plate clamp 43 through the gas rods 45 to clamp and fix the front and back of the heat sink.

The bracket 1 includes an arch frame 11, and two groups of support plates 12 are threadedly installed on the left and right sides of the bottom end of the arch frame 11 in a left-right symmetrical manner. The opposite sides of the two groups of support plates 12 are centrally symmetrically installed with locking pins 13. A main air valve 14 is fixedly installed in the middle of the front end of the arch frame 11, and a motor 15 and an annular frame 16 are fixedly installed in the middle of the bottom end of the arch frame 11. The surface of the annular frame 16 has a scale that can indicate the angle change between the rotation adjustment fixture 2 and the bracket 1. The annular frame 16 is installed around the motor 15, and the bottom of the annular frame 16 is socketed with the clamp 32, and the output end of the motor 15 is connected to the middle of the top of the clamp 32.

The clamp 2 includes a crossbeam frame 21, and the crossbeam frame 21 is fixedly connected to the bottom of the electric push rod 33. The telescopic end of the electric push rod 33 passes through the crossbeam frame 21 and is connected to the pressure plate 34. Frames 22 are installed on both ends of the crossbeam frame 21. The inner middle part of the frame 22 is telescopically connected with a telescopic plate 23. A long screw rod 24 is installed on the top of the telescopic plate 23 and the side facing the crossbeam frame 21. The long screw rod 24 is threadedly connected to the crossbeam frame 21, and a support plate 25 is installed at the bottom between the two groups of frames 22.

A short ridge 26 is fixedly installed in the middle of the top of the support plate 25, and the cross-section of the short ridge 26 is a triangular prism. A ball head valve 27 is fixedly installed on the front and rear sides of the top of the support plate 25, a bottom plate 28 is fixedly installed on the bottom end of the support plate 25, side ridges 29 are fixedly installed on the front and back faces of the support plate 25, and a sleeve rail 210 is fixedly installed on the inner middle part of the support plate 25.

An air jet valve nozzle 211 is fixedly installed in the injection port of the ball head valve 27. The air jet valve nozzle 211 is made of plastic as a whole. A hemispherical hard film is provided in the middle of the air jet valve nozzle 211, which is recessed toward the inner side of the ball head valve 27. The hard film is used to prevent gas and liquid from directly entering the injection port of the ball head valve 27.

A valve tube 46 is also fixedly installed on the vertical plate of the folding plate clamp 43, and the output end of the valve tube 46 is connected to the input end of the gas rod 45. A diverter valve stem 47 is connected between the clamp plate 41 and the vertical plate of the folding plate clamp 43, and the diverter valve stem 47 is connected to the valve tube 46 through the folding plate clamp 43. The diverter valve stem 47 is limitedly installed between the support plate 25 and the bottom plate 28. The connection between the clamp plate 41 and the folding plate clamp 43 is set at the bottom of the bottom plate 28. The vertical plate structures of the clamp plate 41 and the folding plate clamp 43 are connected by the side edges 29. Sliding in close contact with the support plate 25, the diverter valve stem 47 is connected with a telescopic bellows 48, which is slidably sleeved in the sleeve rail 210, the middle parts of the left and right ends of the crossbeam frame 21 and the support plate 25 are threadedly installed with ball head pipes 49, the middle parts of the inner sides of the frame 22 and the telescopic plate 23 and the middle parts between the crossbeam frame 21 and the hanging plate 31 are connected with straight conduits 410, and the diverter valve stem 47 is connected to the main gas valve 14 through the telescopic bellows 48, the ball head pipes 49, and the straight conduits 410;

The frame 22 is threadedly connected to the support plate 25 through the ball head pipe 49, the telescopic plate 23 is threadedly connected to the crossbeam frame 21 through the ball head pipe 49, and the ball head valve 27 is connected to the ball head pipe 49 through the support plate 25;

Among them, the straight conduit 410 connected in the middle between the crossbeam frame 21 and the hanging plate 31 cooperates with the output end of the motor 15 through the middle of the clamp 32 and passes through the arch frame 11 to be connected with the main air valve 14.

A cone bar 411 is fixedly installed on one side of the clamping plate 41 facing the folding plate clamp 43, and an elastic bar 412 is fixedly connected to the side of the cone bar 411, and the elastic bar 412 is arched and not in direct contact with the elastic bar 412, and the axis where the center of the elastic bar 412 is located is perpendicular to the axis where the cone bar 411 is located.

Ear plates 441 are hinged on both ends of the fixed plate 44, and a torsion spring 442 is installed at the hinged portion of the ear plate 441 and the fixed plate 44. A hook 443 is fixedly connected to the side of the fixed plate 44 facing the ear plate 441, and the middle part of the torsion spring 442 is hooked on the hook 443. The ear plate 441 is flipped on the fixed plate 44 toward the side close to the clamping plate 41 through the torsion spring 442. A ball shell 444 is installed in a linear array on the side of the fixed plate 44 facing the clamping plate 41, and the ball shell 444 is a hollow structure made of elastic metal material.

When in use, the heat sink is placed as a whole in the rectangular frame structure surrounded by the clamp 2, and the bottom of the heat sink is placed in the middle of the top of the support plate 25, with the short ridge 26 as the structure for contact between the top of the support plate 25 and the bottom of the heat sink, and then the main air valve 14 is used to transport air with a certain air pressure to the straight conduit 410 installed between the crossbeam frame 21 and the hanging plate 31; under the guidance of the crossbeam frame 21 and the ball head pipe 49 at the left and right ends of the crossbeam frame 21, the air is input into the straight conduit 410 in the middle of the inner side of the frame 22 and the telescopic plate 23, and by closing the diverter valve stem 47 and activating the ball head pipe 49 connected to the diverter valve stem 47, the air is transported into the telescopic bellows 48, driving the telescopic bellows 48 to extend in the sleeve rail 210, and with the help of the extended telescopic bellows 48, the fixing assembly 4 is pushed as a whole to slide toward the center on the support plate 25 until the two groups of fixing assemblies 4 slide to the left and right ends of the bottom of the heat sink; then the diverter valve stem 47 is activated The valve stem 47 delivers air to the valve tube 46, and the valve tube 46 delivers the gas into the gas rod 45, pushing the telescopic end of the gas rod 45 to extend, and the gas rod 45 pushes the fixed plate 44 close to the clamping plate 41, so that the heat sink is clamped between the clamping plate 41 and the fixed plate 44. At this time, the diverter valve stem 47 is closed to keep the gas rod 45 in the extended state, and the clamping action of the fixed plate 44 on the heat sink is maintained; at the same time, the ball head pipes 49 at both ends of the support plate 25 are also closed to maintain the extended position of the telescopic bellows 48 in the sleeve rail 210; then the electric push rod 33 is activated to drive the pressing plate 34 to press down vertically, and the pressing plate 34 is pressed on the top of the heat sink, and finally the adhesive effect between the two sets of Velcro 52 is used to stick the ends of the elastic band 5 together, so as to bind the elastic band 5 to the fixture 2 in a surrounding wrapping shape, and limit the middle part of the heat sink. Thus, the heat sink is fixed and clamped on the clamping fixture through the above operation, which is convenient for the subsequent electroplating operation of the heat sink.

During the clamping and positioning of the heat sink by the fixture 2, the opening and closing control of the ball head pipe 49 and the diverter valve stem 47 on each structural part, as well as the external air pump connected to the main air valve 14 and the delivery and extraction of high-pressure air by the air pump can be used to automatically adjust the fixed position of the fixing component 4 on the support plate 25, and automatically control the clamping, fixing and loosening of the heat sink by the fixing plate 44, thereby realizing automatic clamping and releasing of the heat sink on the fixture 2.

By closing the diverter valve stem 47 and controlling the inflation and deflation of air in the telescopic bellows 48, the sliding position of the fixing assembly 4 on the support plate 25 is changed, and the vertical lifting position of the pressure plate 34 is changed by controlling the electric push rod 33, so as to comprehensively realize the clamping and positioning of heat sinks of different sizes.

Through the telescopic installation of the telescopic plate 23 and the frame 22, the overall clamping height of the clamp 2 for clamping the heat sink can be initially adjusted, and the electric push rod 33 can be used to control the lifting and lowering of the pressure plate 34 on the inner side of the clamp 2, and the local clamping height of the clamp 2 can be secondarily adjusted. This allows the clamp 2 to not only clamp larger-sized heat sinks, but also smaller-sized heat sinks. It is not only suitable for the clamping operation of a single-sized heat sink, but can also effectively change the maximum and minimum clamping operation ranges of the clamp 2.

While using the support plate 25 to support and position the bottom of the heat sink, the bottom of the heat sink can be lifted from the top of the support plate 25 through the short edges 26 with a triangular prism-shaped cross-section, providing stable support for the bottom of the heat sink in the form of line-surface contact while reducing the area of the heat sink that is blocked, so that the entire heat sink can be electroplated and electroplating blind spots are eliminated.

After the heat sink is clamped on the fixture 2, the ball head pipe 49 can be used to connect the ball head valve 27 through the support plate 25 to enable the ball head valve 27 to blow air to clean the surface of the heat sink. The heat sink can be pre-treated before electroplating to automatically clean away hidden dust and impurities on the heat sink, ensuring that the surface of the heat sink is clean and tidy.

At the same time, after the electroplating is completed, the ball head valve 27 can be activated to blow air on the heat sink to blow off the plating liquid attached to the surface of the heat sink, thereby accelerating the shedding speed of the plating liquid, improving the efficiency of cleanly removing the heat sink from the plating liquid, speeding up the electroplating process of the heat sink, improving the overall efficiency of the heat sink electroplating process, increasing the total production volume, and at the same time, ensuring the electroplating quality of the heat sink.

Among them, through the designed bottom plate 28, the ball head valve 27 is horizontally limited and guided between the bottom plate 28 and the support plate 25. At the same time, the connection between the ball head valve 27 and the telescopic bellows 48, and the telescopic bellows 48 are protected together on the inner side of the support plate 25, and the sleeve rail 210 is used to provide a limitable storage protection structure for the telescopic bellows 48, so as to prevent the telescopic bellows 48 from being unable to retract normally, and to guide the telescopic bellows 48 to move in a straight push and pull direction under the action of air delivery and suction, so as to give the ball head valve 27 a thrust or pull, so as to drive the fixing component 4 to slide on the support plate 25 as a whole through the horizontal force on the ball head valve 27. The fixing component 4 as a whole can be adjusted to slide horizontally under the impetus of air pressure, and with the help of air pressure transmission, the abrupt adjustment of the fixing component 4 during movement is eliminated. Even if the heat sink is too large to be clamped between the clamping plate 41 and the fixing plate 44, it will not cause excessive hard impact and damage to the heat sink, nor will it cause continuous backlog damage to the heat sink. In addition, with the help of the retractability of the telescopic bellows 48, reaction time is gained for timely shutting down the delivery of high-pressure gas. The high-pressure air delivered to the main air valve 14 can be shut off in time to block the hard clamping and damage of the heat sink by the fixing component 4, thereby realizing a flexible clamping protection for the heat sink and providing a remedial opportunity for timely adjustment of the clamping method.

When the bracket 1 is used in conjunction with the clamp 2 and the torsion assembly 3, the heat sink can be clamped by retracting the locking pins 13 inserted at both ends of the hanging plate 31 in the initial state, releasing the lock of the hanging plate 31 by the locking pins 13, and activating the motor 15 to drive the hanging plate 31 to rotate around the axis where the center of the clamp 32 is located, so as to change the angle between the clamp 2 and the bracket 1 at the bottom of the torsion assembly 3, and then activating the two sets of locking pins 13 that are symmetrical in center to extend, so that the telescopic ends of the locking pins 13 are against the hanging plate 31, helping the stopped motor 15 to lock the adjusted deflection angle of the hanging plate 31 on the bracket 1, and at the same time, the current clamping Another assembly clamping jig of the adjacent assembly jig also makes the same angle adjustment or the opposite angle adjustment to comprehensively utilize the two assembly clamping jigs to jointly clamp larger or heat sinks with special structures. At this time, the two groups of fixing components 4 on each clamping jig are a clamping and fixing structure to clamp and fix the heat sink between the two groups of fixing components 4, thereby realizing the clamping operation of heat sinks with special structural shapes, realizing another use method of the clamping jig, and being able to effectively link multiple assembly clamping jigs to each other to jointly complete the clamping operation of the heat sink, thereby realizing the adaptability of the clamping jig to different working conditions.

By using the conical strip 411 and the elastic strip 412 as the contact structure with the back side of the heat sink, and the spherical shell 444 as the contact structure with the front side of the heat sink, direct contact between the front and back sides of the heat sink and the fixing assembly 4 is avoided, and the blocked area of the clamped part of the heat sink surface is reduced. At the same time, the above three structural designs are used to achieve elastic contact and clamping of the front and back sides of the heat sink, avoiding scratches, extrusion or pressure damage to the heat sink surface.

By installing the elastic bar 412 between the conical bar 411 and the heat sink, the elastic bar 412 and the conical bar 411 form a grid-like elastic barrier protection structure, so that the back side of the heat sink squeezed on the clamping plate 41 is elastically shielded and protected, avoiding the heat sink from hard collision with the clamping plate 41 when it is pushed and squeezed onto the clamping plate 41 by the fixing plate 44, thereby ensuring that the quality of the heat sink is not affected.

When the heat sink is clamped on the clamping plate 41 by using the fixing plate 44, the ear plate 441 will automatically fit and intercept on the heat sink under the torsion action of the torsion spring 442, assisting the fixing plate 44 to intercept and clamp the heat sink, thereby increasing the contact surface and also playing a certain shielding and protective role.

During the period when the fixed plate 44 clamps the heat sink, it can be seen from Figure 10 that the spherical shell 444 installed at the bottom of the fixed plate 44 can follow the three guide rails on the horizontal plate of the folding plate clamp 43 to provide linear guidance for the straight movement of the fixed plate 44 on the folding plate clamp 43, so that when the spherical shell 444 on the fixed plate 44 clamps the heat sink, it can contact the front side of the heat sink at the same time, regardless of order, thus ensuring the stable clamping function of the fixed plate 44 on the heat sink, and will not cause additional damage to the heat sink. At the same time, it is also convenient for the heat sink to be removed from the plating solution and drained after the electroplating is completed, without leaving the plating solution on the fixture.

The second embodiment, based on the first embodiment, please refer to Figures 1 to 4, a prism sleeve 17 is embedded and installed in the middle of one end of the support plate 12 away from the arch frame 11, and two connecting rod heads 19 are rotatably clamped in the prism sleeve 17 in a left-right symmetrical manner, and a double-headed pin 18 is installed between the two connecting rod heads 19. Both ends of the double-headed pin 18 are equipped with extrusion springs, and the two ends of the double-headed pin 18 are inserted into the opposite sides of the two connecting rod heads 19. The connecting rod heads 19 are threadedly installed with the support plate 12 through the double-headed pin 18, and octagonal grooves are opened in the middle of the left and right ends of the connecting rod heads 19.

The two sets of clamping fixtures are used in combination as follows: by pressing the connecting rod head 19 along the axial direction of the connecting rod head 19, which is recorded as the first connecting rod head, the two extrusion springs installed between the two sets of connecting rod heads 19 and the double-headed plug 18 are squeezed, so that the two ends of the double-headed plug 18 installed in the prism sleeve 17 are respectively inserted into the octagonal grooves in the two sets of connecting rod heads 19, and by rotating the connecting rod head 19 exposed on the outside of the support plate 12, the other connecting rod head 19 installed in the support plate 12 can be further threaded and tightened to be installed on the support plate 12. The connecting rod head 19 here is recorded as the second connecting rod head. At this time, the threaded installation of the second connecting rod head on the support plate 12 of the first clamping fixture is completed; then The first connecting rod head that was just pressed is inserted into the middle position of the end of the support plate 12 of the second clamping fixture, and the same pressing and rotating operation as mentioned above is used to thread the first connecting rod head onto the support plate 12 of the second clamping fixture. After the first connecting rod head thread is tightened into place, the bracket 1 of the first clamping fixture and the bracket 1 of the second clamping fixture present a straight structure in a horizontal docking state, thereby completing the simple assembly between the two clamping fixtures. The same operation as mentioned above can be used to complete the docking assembly between the clamping fixtures, which can be suitable for the combined clamping of different types of heat sinks, can effectively expand the total clamping operation of the clamping fixture, and realize the synchronous clamping and synchronous electroplating operations of multiple heat sinks.

Among them, the connection structure inserted at the connection between the two sets of clamping fixtures through the prism tube sleeve 17 utilizes the multi-faceted structure of the prism tube sleeve 17 to increase the contact area between the clamping fixtures while avoiding direct relative rotation between the two sets of clamping fixtures, which would cause looseness between the clamping fixtures and ensure the tightness of the connection between the clamping fixtures.

The third embodiment, based on the first and second embodiments, please refer to Figure 13, the elastic band 5 is wrapped around the front and rear inner walls of the clamp 2 and fixedly installed with ribs 51, and the ribs 51 are protruded from the surface of the elastic band 5, and the head and tail ends of the elastic band 5 are fixedly connected with Velcro 52, which is used to stick the head and tail ends of the elastic band 5 together, so that the elastic band 5 is bound to the wrapping clamp 2 in a wrapping shape as a whole, and the front and rear positions of the heat sink on the clamp 2 are limited.

Finally, after the heat sink is clamped on the fixture 2, the elastic band 5 can be manually installed around the fixture 2 to clamp and position the front and rear positions of the heat sink again. The setting of the ribs 51 can also provide an additional limit protection for the heat sink, while also reducing the obstruction of the heat sink surface to avoid hindering the smooth electroplating of the heat sink. When the auxiliary heat sink is clamped on the fixture 2, it can protect the heat sink from obvious shaking between the local part and the fixture 2, avoiding the heat sink from accidentally falling from the fixture 2 during the transfer of the clamping fixture, so that the heat sink has a certain anti-shaking function on the clamping fixture, and also provides another guarantee for the stable clamping of the heat sink on the fixture 2, while preventing the heat sink from sliding or falling off during the electroplating process.

Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims (10)

1. A clamping fixture for electroplating of automobile heat sinks, characterized in that it comprises a bracket (1), a torsion assembly (3) is installed in the middle of the bracket (1), a clamp (2) is installed at the bottom of the torsion assembly (3), a fixing assembly (4) is installed at the bottom of the clamp (2) in a bilaterally symmetrical manner, and an elastic band (5) is wrapped around the clamp (2); The torsion assembly (3) comprises a hanging plate (31), a clamp (32) is fixedly connected to the middle of the top of the hanging plate (31), an electric push rod (33) is symmetrically connected to the bottom of the hanging plate (31), a pressing plate (34) is connected to the telescopic end of the electric push rod (33), and the pressing plate (34) is used to clamp the top of the heat sink; The fixing assembly (4) comprises a clamping plate (41), a folding plate clamp (43) is fixedly connected to the clamping plate (41), a fixing plate (44) is installed on the horizontal plate portion of the folding plate clamp (43), gas rods (45) are installed symmetrically on the vertical plate portion of the folding plate clamp (43), the telescopic ends of the gas rods (45) are connected to the fixing plate (44), and the fixing plate (44) cooperates with the clamping plate (41) on the folding plate clamp (43) through the gas rods (45) to clamp and fix the heat sink at the front and back. 2. A clamping fixture for electroplating of automobile heat sinks according to claim 1, characterized in that: the bracket (1) includes an arch frame (11), and two groups of support plates (12) are threadedly installed on the left and right sides of the bottom end of the arch frame (11) in a left-right symmetrical manner, and locking pins (13) are installed on the opposite sides of the two groups of support plates (12) in a central symmetrical manner, and a main air valve (14) is fixedly installed in the middle of the front end of the arch frame (11), and a motor (15) and an annular mounting frame (16) are fixedly installed in the middle of the bottom end of the arch frame (11), and the annular mounting frame (16) is installed around the motor (15), and the bottom of the annular mounting frame (16) is sleeved with the chuck (32), and the output end of the motor (15) is connected to the middle of the top end of the chuck (32). 3. A clamping fixture for electroplating of automobile heat sinks according to claim 2, characterized in that: a prism sleeve (17) is embedded and installed in the middle of one end of the support plate (12) away from the arch frame (11), and two connecting rod heads (19) are rotatably clamped in the prism sleeve (17) in a left-right symmetrical manner, and a double-headed pin (18) is installed between the two connecting rod heads (19), and both ends of the double-headed pin (18) are covered with extrusion springs, and the two ends of the double-headed pin (18) are inserted into the opposite side surfaces of the two connecting rod heads (19), and the connecting rod heads (19) are threadedly installed with the support plate (12) through the double-headed pin (18), and octagonal grooves are opened in the middle of the left and right ends of the connecting rod heads (19). 4. A clamping fixture for electroplating of automobile radiator according to claim 3, characterized in that: the clamp (2) includes a crossbeam frame (21), and the crossbeam frame (21) is fixedly connected to the bottom of the electric push rod (33), the telescopic end of the electric push rod (33) passes through the crossbeam frame (21) and is connected to the pressure plate (34), the left and right ends of the crossbeam frame (21) are both installed with frames (22), the inner middle part of the frame (22) is telescopically connected with a telescopic plate (23), the top of the telescopic plate (23) and the side facing the crossbeam frame (21) are installed with a long screw (24), the long screw (24) is threadedly connected to the crossbeam frame (21), and a support plate (25) is installed at the bottom between the two groups of frames (22). 5. A clamping fixture for electroplating of automobile radiator according to claim 4, characterized in that: a short ridge (26) is fixedly installed in the middle of the top of the support plate (25), and the cross-section of the short ridge (26) is in the shape of a triangular prism, a ball head valve (27) is fixedly installed on the front and rear sides of the top of the support plate (25), a bottom plate (28) is fixedly installed on the bottom end of the support plate (25), side ridges (29) are fixedly installed on the front and rear surfaces of the support plate (25), and a sleeve rail (210) is fixedly installed in the middle of the inner side of the support plate (25). 6. A clamping fixture for electroplating of automobile radiator according to claim 5, characterized in that: an air jet valve nozzle (211) is fixedly installed in the injection port of the ball head valve (27), and the air jet valve nozzle (211) is made of plastic as a whole, and a hemispherical hard film is provided in the middle of the air jet valve nozzle (211) which is recessed toward the inner side of the ball head valve (27). 7. A clamping fixture for electroplating of automobile radiator according to claim 4, characterized in that: a valve tube (46) is also fixedly installed on the vertical plate of the folding plate clamp (43), and the output end of the valve tube (46) is connected to the input end of the gas rod (45), a diverter valve stem (47) is connected between the clamping plate (41) and the vertical plate of the folding plate clamp (43), and the diverter valve stem (47) is connected to the valve tube (46) through the folding plate clamp (43), the diverter valve stem (47) is limitedly installed between the support plate (25) and the bottom plate (28), the connection between the clamping plate (41) and the folding plate clamp (43) is arranged to fit the bottom of the bottom plate (28), and the clamping plate (41) and the folding plate clamp (43) are connected to each other. 3) the vertical plate structures are all fitted and slidably engaged with the support plate (25) through the side edges (29), the diverter valve stem (47) is connected with a telescopic bellows (48), the telescopic bellows (48) is slidably sleeved in the sleeve rail (210), the middle parts of the left and right ends of the crossbeam frame (21) and the support plate (25) are threadedly installed with ball head pipes (49), the inner middle parts of the frame (22) and the telescopic plate (23) and the middle part between the crossbeam frame (21) and the hanging plate (31) are all connected with straight conduits (410), and the diverter valve stem (47) is connected to the main gas valve (14) through the telescopic bellows (48), the ball head pipe (49) and the straight conduit (410); The frame (22) is threadedly connected to the support plate (25) via a ball head pipe (49), the telescopic plate (23) is threadedly connected to the crossbeam frame (21) via a ball head pipe (49), and the ball head valve (27) is connected to the ball head pipe (49) via the support plate (25). 8. A clamping fixture for electroplating of automobile heat sinks according to claim 7, characterized in that: a cone bar (411) is fixedly installed on one side of the clamping plate (41) facing the folding plate clamp (43), and an elastic bar (412) is fixedly connected to the side of the cone bar (411), and the elastic bar (412) is arched and not in direct contact with the elastic bar (412), and the axis where the center of the elastic bar (412) is located is perpendicular to the axis where the cone bar (411) is located. 9. A clamping fixture for electroplating of automobile radiator according to claim 1, characterized in that: ear plates (441) are hinged on both left and right ends of the fixing plate (44), a torsion spring (442) is installed at the hinged portion of the ear plate (441) and the fixing plate (44), a hook (443) is fixedly connected to the side of the fixing plate (444) facing the ear plate (441), the middle part of the torsion spring (442) is hooked on the hook (443), the ear plate (441) is flipped on the fixing plate (44) toward the side close to the clamping plate (41) through the torsion spring (442), and a spherical shell (444) is installed in a linear array on the side of the fixing plate (44) facing the clamping plate (41), and the spherical shell (444) is a hollow structure made of elastic metal material. 10. A clamping fixture for electroplating of automobile heat sinks according to claim 1, characterized in that: the elastic band (5) is wrapped around the front and rear inner walls of the clamp (2) and fixedly installed with ribs (51), and the ribs (51) are protruded from the surface of the elastic band (5), and the head and tail ends of the elastic band (5) are fixedly connected with Velcro (52) for sticking the head and tail ends of the elastic band (5) together.