Universal hanging tool for automatic electroplating of cylinder hole

Abstract

The universal hanging tool comprises a bearing frame and a plurality of electroplating units, each electroplating unit comprises a liquid supply assembly, an electroplating assembly and a pressing device, each liquid supply assembly comprises a liquid supply base used for introducing electroplating liquid to form circulating electroplating, and the electroplating assemblies are pressed on the liquid supply bases through the pressing devices; forming the electroplating unit; a pressing device rail and a liquid supply seat rail are arranged on the bearing frame; the liquid supply seats are freely placed on the liquid supply seat rails, the positions of the liquid supply seats can be adjusted, the liquid supply seats can be combined, and the pressing devices are installed on the pressing device rails in a position-adjustable mode; the device not only has all the advantages of circulating electroplating outside the tank, but also can adapt to the electroplating process of cylinder holes of one-cylinder to multi-cylinder engines, has complete universality, does not need to replace tools for electroplating different cylinder holes, and is simple in structure and convenient to use, so that the working efficiency is improved, and the working cost is reduced.

Description

Technical Field

[0001] The invention relates to a cylinder electroplating device component, in particular to a universal hanger for automatic electroplating of cylinder holes. Background Art

[0002] The engine cylinder body is electroplated to form an anti-wear layer to ensure the wear resistance of the cylinder bore. In the prior art, the electroplating methods basically include in-tank electroplating and out-tank circulation electroplating. In contrast, the out-tank circulation electroplating process has a flowing electroplating environment, which ensures the real-time replacement of cations on the coating, the indifferent concentration and stable and uniform fluidity, ensure the compactness of the coating, and ultimately ensure the quality of electroplating.

[0003] However, in the existing electroplating structure outside the tank, due to the different dimensions of the cylinder body (workpiece), the anode (especially the height) needs to be replaced in order to be used for the normal electroplating work, which requires the entire production line to be shut down, increasing losses and production costs; and the tooling fixtures are also different, with complex structures, and the replacement process needs to be carried out manually, which reduces work efficiency. To this end, Chinese patent Z201911244529.7 discloses a scheme for electroplating workpieces with different cylinder diameters on the same tooling using a cylinder diameter compensation structure, so that the existing tooling structure has a certain degree of versatility. However, with the continuous development of engine technology, especially the use on motorcycles, there are more multi-cylinder requirements, and there are different standards between multi-cylinder engines, not only with different cylinder diameters, but also with different distances between cylinder diameters. The existing cycle electroplating tooling is a fixed design. For different multi-cylinder engine cylinders, a variety of tooling structures are required. Different cylinders need to remove the original tooling and replace the appropriate electroplating tooling. Not only is the operation more complicated, the tooling cost is high and the work efficiency is extremely low.

[0004] Therefore, it is necessary to optimize and improve the existing circulating (dynamic) electroplating equipment, which should have all the advantages of off-tank circulating electroplating and be fully universal, able to adapt to the electroplating process of one-cylinder to multi-cylinder engine cylinder bores, simple structure, easy to use, and no need to dismantle the original tooling, thereby improving work efficiency and reducing work costs. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a universal hanger for automated electroplating of cylinder bores, which has all the advantages of out-of-tank circulation electroplating and is fully universal, can adapt to the electroplating process of cylinder bores of one to multiple cylinder engines, and has a simple structure and is easy to use. It does not require the removal of the original tooling, thereby improving work efficiency and reducing work costs.

[0006] The universal hanger for cylinder hole automatic electroplating of the present invention comprises a carrier frame and an electroplating device;

[0007] The electroplating device comprises a plurality of electroplating units, wherein the electroplating units comprise a liquid supply assembly, an electroplating assembly and a pressing device, wherein the liquid supply assembly comprises a liquid supply seat for introducing electroplating liquid for forming a cyclic electroplating, and the pressing device presses the electroplating assembly onto the liquid supply seat to form the electroplating unit;

[0008] The carrier frame is provided with a clamping device track and a liquid supply seat track;

[0009] The liquid supply seat is freely placed on the liquid supply seat track, so that the position is adjustable and the liquid supply seats can be combined, and the clamping device is installed on the clamping device track in an adjustable position;

[0010] As shown in the figure, the carrier is a frame structure, and supports and beams need to be added according to the mechanical load-bearing needs, which will not be repeated here; a clamping device track is fixed on the upper part of the frame structure of the carrier, and a liquid supply seat track is fixed on the lower part. At the same time, the clamping device track and the liquid supply seat track also play a role in reinforcing the beam. The two are parallel in space, so that the position adjustment of the liquid supply seat and the position adjustment of the clamping device can be in the same direction; in the present invention, the liquid supply seat is the bottom component forming the electroplating unit. When in use, the position of the liquid supply seats of the two electroplating units determines the positional relationship between the electroplating components. Therefore, when the cylinder holes of different multi-cylinder engines are electroplated, it is only necessary to adjust the positional relationship between the liquid supply seats to achieve , the structure and operation process are simple, which improves work efficiency while not requiring disassembly and replacement of tooling, thus saving process costs; at the same time, unlike the structure in the prior art where the electroplating tooling is installed in a fixed position and a hanging basket with the workpiece is placed on the workstation when in use, in the present invention, the liquid supply seat is located on the carrier, which is easy to adjust the position to adapt to different cylinder requirements, and after being pressed against the workpiece, the sealing effect is also guaranteed; when in use, the carrier, the liquid supply seat and the workpiece are lifted together and placed in the electroplating station (at this time, only basic general equipment such as the electroplating liquid tank is required) to carry out electroplating. Of course, the required power supply is connected after it is in place, which can be completed by means of the prior art, and will not be repeated here;

[0011] The electroplating assembly generally includes an anode and an anode seat (the anode seat is a hollow tube, which can be separated from the anode or formed integrally). The usual structure is that the anode is installed on the anode seat, and the anode seat passes through the liquid supply seat. The liquid supply seat introduces the plating solution into the outside of the anode seat and between the outside of the anode and the cylinder hole. The plating solution that has completed the electroplating enters the center of the anode from the top, is led out from the center hole of the anode seat, and flows back to the plating solution tank. This is a general structure of circulating electroplating and will not be repeated here.

[0012] Furthermore, there are two liquid supply seat tracks, and the liquid supply seat is provided with two flanges corresponding to the two liquid supply seat tracks, and the liquid supply seat is supported on the liquid supply seat tracks through the flanges; as shown in the figure, the cross-section of the liquid supply seat is approximately T-shaped (other shapes can be formed below the flange as needed, and together with the flange part, a T-shape is formed). When in use, the flanges on both sides are respectively placed on the corresponding liquid supply seat tracks, and after installing the electroplating components and the workpiece, they can be clamped by a clamping device. It is convenient and quick to use, and it is also convenient to adjust the position.

[0013] Furthermore, the support frame is also provided with a main liquid supply channel, and the main liquid supply channel is provided with a plurality of liquid supply branch channels, and the liquid supply branch channels are provided with liquid supply valves and can be connected with the liquid inlet of the corresponding liquid supply seat; as shown in the figure, the main liquid supply channel can be a pipeline structure parallel to the track of the liquid supply seat, and can be a square pipeline structure or a circular pipeline structure, etc., and the length can extend to the length direction in which the liquid supply seat can be distributed, and the liquid supply branch channel is provided with a liquid supply valve, and the idle liquid supply seat closes the liquid supply valve. Of course, the liquid supply branch channel is generally formed by a hose to ensure adaptability to the position adjustment of the liquid supply seat, and a pipe joint is provided on the liquid supply seat for communicating with the branch channel; as shown in the figure, the pipe joint is tilted downward to avoid the track of the liquid supply seat, which will not be repeated here.

[0014] Furthermore, a total liquid inlet pipe is provided at the bottom of the total liquid supply channel, and the liquid inlet port of the total liquid inlet pipe enables the total liquid inlet pipe to be directly and sealedly connected with the liquid outlet pipe port provided in the plating liquid tank after the support frame is in place; the total liquid inlet pipe is a pipe for introducing the plating liquid in the plating liquid tank into the total liquid supply channel, and has a liquid inlet port and introduces the plating liquid from the port; the plating liquid tank is provided with a liquid outlet pipe (generally connected with the outlet of the plating liquid pump), and after the support frame is in place, the total liquid inlet pipe is directly matched with the liquid outlet pipe of the plating liquid tank. As shown in the figure, the total liquid inlet pipe is vertically arranged, and the lower port is the liquid inlet port and is a tapered port, the liquid outlet pipe is vertically arranged, and the upper port is a tapered port. After the support frame is in place, the upper port of the liquid outlet pipe is directly inserted into the lower port of the total liquid inlet pipe to form a tapered matching pair, thereby completing the sealed connection, and the structure is simple and easy to operate.

[0015] Furthermore, the liquid supply seat has a drainage cavity for introducing the electroplating liquid from the liquid inlet, and the anode seat of the electroplating assembly is sealed downward through the bottom of the drainage cavity. As shown in the figure, the bottom of the drainage cavity of the liquid supply seat is provided with a hole for the anode seat to pass through, and a seal is formed by means of existing technology when passing through, such as threaded fitting or sealing filler, etc.; the liquid supply assembly also includes a guide member arranged in the drainage cavity and sleeved on the anode seat, the guide member has a drainage portion with flow distribution holes, the flow distribution holes are distributed around the anode seat, the outer edge of the drainage portion is in contact with the side wall of the drainage cavity, thereby forming a stable matching structure and having a sealing effect, so that the electroplating liquid needs to flow into the electroplating environment through the flow distribution holes; the electroplating liquid is introduced between the anode and the workpiece through the flow distribution holes, which can ensure the uniform and stable flow of the electroplating liquid, so that the effective ions in the electroplating environment are evenly distributed, thereby achieving the desired electroplating effect; the liquid inlet is located at the lower part of the drainage portion and is connected to the drainage cavity.

[0016] Furthermore, the bottom of the total liquid supply channel is connected to the total liquid inlet pipe at a low point. When the electroplating process stops, the electroplating environment and the electroplating liquid in the channel flow back to the total liquid inlet pipe by their own gravity. As shown in the figure, the bottom of the total liquid supply pipeline is an inclined structure, and the connection point between the total liquid inlet pipe and the total liquid supply channel is the lowest point of the inclined bottom. Of course, the total liquid supply channel can also be a pipeline installed obliquely on the supporting frame, which can also achieve many purposes of the invention. It also includes a return liquid tank. After the supporting frame is in place, the anode seat is opposite to the return liquid channel of the return liquid tank. As shown in the figure, the return liquid tank is connected by two partitions. A liquid return channel of a set width is formed, and the anode seat is opposite to the liquid return channel after passing through the bottom of the drainage chamber. The liquid return tank is provided with a liquid outlet, and the liquid outlet is located within the range of the liquid return channel. The liquid outlet is located at the low point of the liquid return channel. The purpose of the invention can be achieved by tilting the bottom inner surface of the liquid return tank. No further details are given here. When in use, the liquid return tank is located on the work station, and the liquid outlet pipe seal of the electroplating liquid tank passes through the bottom of the liquid return tank. After the supporting frame is in place, the liquid return tank contains the supporting frame from the bottom, which can effectively ensure that all the electroplating liquid of the entire hanger is sealed in time and will not leak out even if there is a leak.

[0017] Furthermore, the guide member is a T-shaped sleeve which is sleeved on the anode seat, the flange of the T-shaped sleeve is the drainage part, and the flow distribution holes are evenly distributed on the flange of the T-shaped sleeve; a V-shaped annular groove is provided on the end surface of the drainage part corresponding to the flow distribution holes, and the bottom of the V-shaped annular groove corresponds to the flow distribution holes; as shown in the figure, the upper end of the T-shaped sleeve, i.e., the cylindrical structure, is bent outward to form an annular flange, the structure is simple and compact, and the installation with the anode is stable and simple; different from the existing drainage part with a larger upper and smaller lower conical surface at the inner circle upper end, the outlet of the flow distribution hole is located at the bottom of the V-shaped groove, and after the plating solution is drained out, the plating solution is fully buffered along the V-shaped groove and dispersed to the drainage cavity, forming a more uniform and stable plating solution, further avoiding the plating solution flowing out of the flow distribution hole from forming a local unstable impact on the plating environment.

[0018] Further, the anode of the electroplating assembly is installed on the anode seat or is formed integrally with the anode seat, including a working part and a functional part, the working part is used to form an electroplating environment, and the functional part extends upward to introduce an anode current; the functional part is a hollow structure, which is used to introduce the plating solution of the electroplating environment into the center of the anode and lead it out by the anode seat for reflux; as shown in the figure, in this embodiment, the anode seat and the anode are arranged separately, the anode seat is a hollow column, the anode seat is inserted into the anode upward and the outer circle is provided with an annular protrusion, the annular protrusion is pressed against the lower end face of the anode upward to form a limit for the anode, and at the same time, the anode seat passes through the guide member downward, the annular protrusion is pressed against the upper end face of the guide member downward, and the lower end face of the guide member is placed at the bottom of the drainage cavity, thereby forming a stability support from bottom to top; in order to ensure that the electroplating solution flows into the electroplating environment from the flow distribution hole, the anode seat and the guide member and the guide member and the drainage cavity wall must be tightly matched, or necessary sealing measures are adopted, which will not be repeated here;

[0019] As shown in the figure, the clamping device is suspended on the clamping device track through a clamping device seat, and the clamping device seat includes a rectangular seat groove that opens upward and is accommodated in the clamping device track from bottom to top, and a hanging part that is located at the upper part of the rectangular seat groove and is bent inwardly and clamped on the upper surface of the clamping device track; as shown in the figure, the clamping device includes a clamping rod that can be driven to reciprocate up and down and a lever assembly for driving the clamping rod to reciprocate, and the lower end of the clamping rod is provided with a clamping plate (such as a threaded connection) whose height can be adjusted on the clamping rod, which can adapt to different workpiece heights; the lever assembly includes a driving lever (forming a bending structure based on a fulcrum) and a rocker arm, and the clamping rod The upper end of the end is rotatably hinged to the resistance end of the lever, and the upper end of the rocker arm is coaxially hinged with the fulcrum of the driving lever so as to rotate with a single degree of freedom; as shown in the figure, the rocker arm is composed of two separate levers on the left and right, and a limit block (generally formed in one piece) is fixedly arranged between the two rocker arms, and the limit block limits the lever from continuing to rotate in the clamping direction when the driving lever drives the clamping rod to clamp the workpiece; the lower end of the rocker arm is hinged to a base, and the rocker arm is composed of two separate levers on both sides of the base and the lower end of the rocker arm is coaxially hinged to the base; when the clamping rod clamps the workpiece through the clamping part, the axis of the clamping rod intersects with or exceeds the axis of the fulcrum backwards, and at this time, the limit block presses against the resistance arm of the driving lever from the back side;

[0020] As shown in the figure, the base includes a base plate and a guide sleeve, which are detachably connected and fixed, and both are provided with through holes for the clamping rod to pass through; the base plate is detachably fixed to the rectangular seat groove by two connecting rods, and has strong adaptability; the guide sleeve is fixed to the base plate by threaded connection, and has a simple structure; as shown in the figure, the lower end of the guide sleeve is processed with an external thread, which is screwed on the internal thread on the base plate to form a connection, and a locking nut is also used to lock it to avoid it coming out; the lower end of the rocker arm is hinged on the guide sleeve, and the structure is simple and practical. The entire locking assembly forms a module, and the hinged part is installed on the base plate after it is completely processed;

[0021] The backward direction in the present invention refers to the direction in which the power arm swings when the driving lever presses the workpiece, and the back side is the side corresponding to the backward direction, which will not be described in detail here.

[0022] Due to the action of the limit block, the resistance wall of the lever is prevented from continuing to rotate, and the rocker arm cannot continue to rotate under the action of the limit block, that is, interlocking is formed, and the axis of the clamping rod intersects with or exceeds the axis of the fulcrum backward (generally intersection is sufficient), forming a stable retraction mechanism to avoid loosening.

[0023] The reciprocating motion of the clamping rod is generally a single degree of freedom, that is, it only moves back and forth; the upper end of the rocker arm is hinged at the fulcrum of the driving lever through a fulcrum hinge shaft, and the driving lever rotates around the fulcrum under the action of external force, so that the resistance arm approaches vertical from horizontal, thereby driving the clamping rod downward to clamp the workpiece, and the rocker arm swings forward around its lower end under the lateral (no displacement) constraint of the clamping rod. When the resistance arm clamps the workpiece, the fulcrum axis at least intersects with the fulcrum hinge axis or exceeds the hinge axis backward, thereby forming a self-locking, preventing the lever from rotating under the reaction force. At the same time, the limit block limits the lever from continuing to rotate in the clamping direction, preventing it from continuing to rotate and driving the clamping rod upward, forming a clamping self-locking (that is, the mechanical structure composed of the clamping rod and the driving lever is similar to the connecting rod crank structure, but because it is limited by the limit block, a circular motion similar to the connecting rod crank is avoided, thereby forming a self-locking).

[0024] Furthermore, it also includes a transition ring, and the clamping device presses the electroplating assembly to the liquid supply seat through the transition ring. The transition ring is provided with a functional gap, and when in use, the anode power supply is connected to the functional part of the anode through the functional gap; as shown in the figure, the transition ring is a cylindrical ring, which is sleeved on the anode and the lower end is pressed on the workpiece when in use, and the upper end is pressed by the clamping plate of the clamping device, thereby forming a stable electroplating environment; the purpose of the functional gap of the transition ring is to easily clamp the power supply to the functional part of the anode through the gap, and at the same time, different transition rings can adapt to different cylinder heights, so that the present invention has further versatility.

[0025] Beneficial effects of the present invention: the universal hanger for automatic electroplating of cylinder holes of the present invention adopts a liquid inlet seat with adjustable position set on the carrier frame, and each liquid inlet seat corresponds to a cylinder hole, therefore, different cylinder models and cylinder hole numbers can be electroplated by the present invention, and it has complete versatility, so that the present invention not only has all the advantages of external tank circulation electroplating, but also has the advantages of dynamic electroplating, which not only ensures the real-time replacement of cations on the coating, forms an indifferent concentration and stable and uniform fluidity, better ensures the compactness of the coating, ensures the quality of electroplating, and can also adapt to the electroplating process of cylinder holes of one cylinder to multiple cylinder engines, does not need to replace tooling, and has a simple structure and is easy to use, thereby improving work efficiency and reducing work costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is the overall appearance diagram of the present invention;

[0028] Figure 2 The overall appearance diagram of the present invention with a liquid return tank added;

[0029] Figure 3 is a structural diagram of the carrier frame;

[0030] Figure 4 It is a transverse cross-sectional view of the carrier frame (with the liquid inlet seat);

[0031] Figure 5 It is a cross-sectional view of the electroplating unit;

[0032] Figure 6 This is an exploded view of the electroplating unit;

[0033] Figure 7 is the anode structure diagram;

[0034] Figure 8 It is the structural diagram of the clamping device;

[0035] Fig. 9 This is the structural diagram of the return tank. DETAILED DESCRIPTION

[0036] like Figures 1 to 9 As shown: the universal hanger for cylinder hole automatic electroplating of this embodiment includes a carrier 1 and an electroplating device;

[0037] The electroplating device comprises a plurality of electroplating units 3, wherein the electroplating units 3 comprise a liquid supply component, an electroplating component and a pressing device 31, wherein the liquid supply component comprises a liquid supply seat 301 for introducing electroplating liquid for forming a cyclic electroplating, and the pressing device 31 presses the electroplating component onto the liquid supply seat 301 to form the electroplating unit 3;

[0038] The carrier frame 1 is provided with a clamping device track 101 and a liquid supply seat track 102;

[0039] The liquid supply seat 301 is freely placed on the liquid supply seat track 102, forming an adjustable position and allowing the liquid supply seats 102 to form a combinable state. The combined state means that the combination can be adjusted according to the number of cylinder holes on the cylinder body and the distance between the cylinder holes to achieve versatility; the clamping device 31 is installed on the clamping device track with an adjustable position to adapt to the positional relationship between the liquid supply seats to achieve clamping; due to the need to withstand the pressure of the clamping device and the gravity of the electroplating unit, the liquid supply seat track 102 can be two common support liquid supply seats, or it can be one with a set width for supporting the liquid supply seat and can be limited by a lateral limit design to achieve the purpose of the invention;

[0040] As shown in the figure, the carrier 1 is a frame structure, and supports and beams need to be added according to the mechanical load-bearing needs, which will not be repeated here; a clamping device track 101 is fixed to the upper part of the frame structure of the carrier 1, and a liquid supply seat track 102 is fixed to the lower part. At the same time, the clamping device track 101 and the liquid supply seat track 102 also play a role in reinforcing the beam. The two are parallel in space, so that the position adjustment of the liquid supply seat and the position adjustment of the clamping device can be in the same direction; in the present invention, the liquid supply seat 301 is a bottom component forming an electroplating unit. When in use, the positions of the liquid supply seats 301 of the two electroplating units determine the positional relationship between the electroplating components. Therefore, when electroplating the cylinder holes of different multi-cylinder engines, it is only necessary to adjust the position between the liquid supply seats. The positional relationship can be realized, the structure and operation process are simple, and while the work efficiency is improved, there is no need to disassemble and replace the tooling, saving process costs; at the same time, unlike the structure in the prior art where the electroplating tooling is installed in a fixed position and the hanging basket with the workpiece is placed on the workstation when in use, in the present invention, the liquid supply seat 301 is located on the carrier 1, and the position is easy to adjust to adapt to different cylinder requirements. After being pressed between the workpiece, the sealing effect is also guaranteed; when in use, the carrier, the liquid supply seat and the workpiece are lifted together and placed in the electroplating station (at this time, only basic general equipment such as the electroplating liquid tank is required) to carry out electroplating. Of course, the required power supply is connected after it is in place, which can be completed by means of the prior art, and will not be repeated here;

[0041] The electroplating assembly generally includes an anode 304 and an anode seat 303 (the anode seat is a hollow tube, which can be separated from the anode or formed integrally). The usual structure is that the anode 304 is installed on the anode seat 303, and the anode seat 303 passes through the liquid supply seat 301. The liquid supply seat 301 introduces the plating solution into the outside of the anode seat 303 and between the outside of the anode 304 and the cylinder hole of the workpiece 4. The electroplating solution that has completed the electroplating enters the center of the anode 304 from the top, is led out from the center hole of the anode seat 303, and flows back to the plating solution tank. This is a general structure of circulating electroplating and will not be repeated here.

[0042] In this embodiment, the liquid supply seat track 102 is two parallel arrangements, and the liquid supply seats of several electroplating units are placed side by side along the length direction of the liquid supply seat track 102; the liquid supply seat 301 is provided with two flanges corresponding to the two liquid supply seat tracks, and the liquid supply seat is supported on the liquid supply seat track through the flanges; as shown in the figure, the outer shape of the liquid supply seat is a square column, and the longitudinal cross-section (at least in the direction perpendicular to the liquid supply seat track) is approximately T-shaped (other shapes can be formed below the flange as needed, and together with the flange part, a T-shape is formed). When in use, the flanges on both sides are respectively placed on the corresponding liquid supply seat tracks 102, and the main body of the lower part of the flange of the liquid supply seat is abutted against the two liquid supply seat tracks to ensure the stability of the installation; when in use, the electroplating components and the workpiece 4 are installed and then clamped by the clamping device 31. It is convenient and quick to use, and it is also convenient to adjust the position.

[0043] In this embodiment, the carrier 1 is also provided with a main liquid supply channel 103, which is generally arranged close to the liquid supply seat track 102 to ensure a shorter electroplating liquid delivery distance; the main liquid supply channel 103 is provided with a plurality of liquid supply branch channels 104, and the liquid supply branch channels 104 are provided with liquid supply valves 1041 and can be connected to the liquid inlet of the corresponding liquid supply seat 301; as shown in the figure, the main liquid supply channel 103 can be a pipeline structure parallel to the liquid supply seat track 102, and can be a square pipeline structure or a circular pipe structure. Channel structure, etc., the length can be extended to the length direction in which the liquid supply seat 301 can be distributed, and a liquid supply valve 1041 is provided on the liquid supply branch channel 104, and the idle liquid supply seat 301 (electroplating unit) closes the liquid supply valve. Of course, the liquid supply branch channel 104 is generally formed by a hose to ensure adaptability to the position adjustment of the liquid supply seat, and a pipe joint 3011 is provided on the liquid supply seat 301 for connecting with the branch channel; as shown in the figure, the pipe joint 3011 is tilted downward to avoid the liquid supply seat track 102, which is not repeated here.

[0044] In this embodiment, a main liquid inlet pipe 105 is provided at the bottom of the main liquid supply channel 103, and the liquid inlet port of the main liquid inlet pipe 105 allows the support frame to be directly and sealedly connected with the liquid outlet pipe 203 provided in the electroplating liquid tank after the support frame is in place; the main liquid inlet pipe 105 is a pipeline for introducing the plating liquid in the electroplating liquid tank into the main liquid supply channel 103, and has a liquid inlet port and introduces the plating liquid from the port; the electroplating liquid tank is provided with a liquid outlet pipe 203 (generally connected with the outlet of the plating liquid pump). After the support frame 1 is in place, the main liquid inlet pipe 105 directly cooperates with the liquid outlet pipe 203 of the electroplating liquid tank. As shown in the figure, the main liquid inlet pipe 105 is vertically arranged, and the lower port is the liquid inlet port and is a tapered port. The liquid outlet pipe 203 is vertically arranged, and the upper port is a tapered port. After the support frame is in place, the upper port of the liquid outlet pipe is directly inserted into the lower port of the main liquid inlet pipe to form a tapered matching pair, thereby completing the sealed connection, and the structure is simple and easy to operate.

[0045] In this embodiment, the liquid supply seat 301 has a drainage cavity 3013 for introducing the electroplating liquid from the liquid inlet, and the anode 304 seat of the electroplating assembly is sealed downward through the bottom of the drainage cavity. As shown in the figure, the bottom of the drainage cavity of the liquid supply seat 304 is provided with a hole for the anode seat 303 to pass through. When passing through, a seal is formed by means of existing technology, such as threaded fitting or sealing filler, etc. The threaded connection can also ensure the stability of the anode seat installation, which is conducive to ensuring the coaxiality of the anode, which will not be repeated here; the liquid supply assembly also includes a guide member 302 arranged in the drainage cavity and sheathed on the anode seat 303, and the guide member 302 has a flow distribution hole 3 021, the flow distribution holes 3021 are distributed around the anode seat 303. As shown in the figure, the drainage cavity is a cylindrical cavity, and the drainage portion is also cylindrical. After placement, the outer edge of the drainage portion fits with the side wall of the drainage cavity, thereby forming a stable matching structure, and at the same time has a sealing effect, so that all the plating liquid must flow into the electroplating environment through the flow distribution holes; in the present invention, the plating liquid is introduced between the anode and the workpiece through the flow distribution holes 3021, which can ensure the uniform and stable flow of the plating liquid, so that the effective ions in the electroplating environment are evenly distributed, thereby achieving the desired electroplating effect; the liquid inlet is located at the lower part of the drainage portion and is connected to the drainage cavity 3013.

[0046] In this embodiment, the bottom of the total liquid supply channel 103 and the connection point of the total liquid inlet pipe 105 are low points. When the electroplating process stops, the electroplating environment and the electroplating liquid in the channel flow back to the total liquid inlet pipe 105 by their own gravity, and then flow back to the electroplating liquid tank; as shown in the figure, the bottom of the total liquid supply pipeline 103 is an inclined structure, and the connection point of the total liquid inlet pipe 105 and the total liquid supply channel is the lowest point of the inclined bottom. Of course, the total liquid supply channel can also be a pipeline installed obliquely on the supporting frame, which can also achieve many purposes of the invention; it also includes a return liquid tank 2. After the supporting frame 1 is in place, the anode seat 303 is opposite to the return liquid channel 201 of the return liquid tank 1; as shown in the figure, the return liquid tank 2 is a rectangular open tank, As a whole, it can contain the carrier frame horizontally, and a return liquid channel 201 of a set width is formed inside by two partitions. The anode seat 303 passes through the bottom of the drainage chamber and faces the return liquid channel 201. A liquid outlet is provided in the return liquid tank, and the liquid outlet is located within the range of the return liquid channel 201 and at the low point of the return liquid channel 201. The purpose of the invention can be achieved by tilting the bottom inner surface of the return liquid tank 2. No further details are given here. When in use, the return liquid tank 2 is located on the work station, and the liquid outlet pipe 203 of the electroplating liquid tank is sealed and passes through the bottom of the return liquid tank. After the carrier frame 1 is in place, the return liquid tank 2 contains the carrier frame 1 from the bottom, which can effectively ensure that all the electroplating liquid of the entire hanger is sealed in time and will not leak out even if there is a leak.

[0047] In this embodiment, the flow guide 302 is a T-shaped sleeve that is sleeved on the anode seat 303. The T-shaped sleeve refers to a T-shaped cross-section in the vertical direction, which will not be repeated here; the flange of the T-shaped sleeve is the drainage part, and the flow distribution holes 3021 are evenly distributed on the flange of the T-shaped sleeve; a V-shaped annular groove 3022 is opened on the end surface of the drainage part corresponding to the flow distribution holes 3021, and the bottom of the V-shaped annular groove 3022 corresponds to the flow distribution holes; as shown in the figure, the T-shaped sleeve is a cylindrical structure The upper end is bent outward to form an annular flange, which has a simple and compact structure, and is stable and simple to install with the anode 304; unlike the existing drainage portion whose inner circle upper end is a conical surface with a larger upper part and a smaller lower part, the outlet of the flow distribution hole 3021 is located at the bottom of the V-shaped groove. After the plating liquid is drained out, the plating liquid is fully buffered along the V-shaped groove and dispersed to the drainage cavity, forming a more uniform and stable plating liquid, further avoiding the plating liquid flowing out of the flow distribution hole 3021 from forming a local unstable impact on the plating environment.

[0048] In this embodiment, the anode 304 of the electroplating assembly is installed on the anode seat 303 or is formed integrally with the anode seat 303, including a working part 3041 and a functional part 3042, wherein the working part 3041 is used to form an electroplating environment, and the functional part 3042 extends upward to introduce an anode current; the functional part 3042 is a hollow structure, which is used to introduce the plating solution of the electroplating environment into the center of the anode and lead it out from the anode seat for reflux. In this embodiment, at least two windows of a set area are opened upward from the position where the working part of the anode extends to the functional part to form a hollow part, which will not be repeated here; as shown in the figure, in this embodiment, the anode seat 303 and the anode 304 are separated. The anode seat 303 is a hollow column, the anode seat 303 is inserted upward into the anode 304 and the outer circle is provided with an annular protrusion, the annular protrusion presses upward against the lower end surface of the anode to form a limit to the anode, and at the same time, the anode seat passes downward through the guide member 302, the annular protrusion presses downward against the upper end surface of the guide member 302, and the lower end surface of the guide member 302 is placed at the bottom of the drainage cavity, thereby forming a stability support from bottom to top; in order to ensure that the electroplating solution flows into the electroplating environment from the flow distribution hole 3021, the anode seat 303 and the guide member 302 and the guide member 302 and the wall of the drainage cavity 3013 need to be tightly matched, or necessary sealing measures are adopted, which will not be repeated here;

[0049] As shown in the figure, the clamping device 31 is suspended on the clamping device track 101 through the clamping device seat 3107, and the clamping device seat 3107 includes a rectangular seat groove that opens upward and is accommodated in the clamping device track from bottom to top, and a hanging portion that is located at the upper part of the rectangular seat groove and is bent inwardly and clamped on the upper surface of the clamping device track; as shown in the figure, the clamping device 31 includes a clamping rod that can be driven to reciprocate up and down and a lever assembly for driving the clamping rod 3102 to reciprocate, and the lower end of the clamping rod 3102 is provided with There is a clamping plate (such as a threaded connection) on the clamping rod 3102, which can be adjusted in height to adapt to different workpiece heights; the lever assembly includes a driving lever 3104 (forming a bending structure based on the fulcrum) and a rocker arm 3105, the upper end of the clamping rod 3102 is rotatably hinged to the resistance end of the lever 3104, and the upper end of the rocker arm 3105 is coaxially hinged with the fulcrum of the driving lever 3104 to rotate with a single degree of freedom; as shown in the figure, the rocker arm 3105 is divided into two separate levers, the left and right rockers 3104 and the right and left rockers 3105. A limit block 31051 (generally formed in one piece) is fixed between the two ends of the rocker arm 3104 and the workpiece. When the driving lever 3104 drives the clamping rod to clamp the workpiece, the limit block limits the lever from continuing to rotate in the clamping direction. The lower end of the rocker arm is hinged to a base. The rocker arm is composed of two arms which are arranged on both sides of the base and are coaxially hinged to the base at the lower end. When the clamping rod clamps the workpiece through the clamping portion, the axis of the clamping rod intersects with or exceeds the axis of the fulcrum backwards. At this time, the limit block 31051 presses against the resistance of the driving lever from the back side. Force arm; as shown in the figure, the driving lever 3104 is a right-angle structure bounded by a fulcrum, the resistance arm forms a fork-shaped groove and the clamping rod 3102 is located in the fork-shaped groove and is hinged to the end of the resistance arm. The fork-shaped structure is conducive to stable connection and does not apply bias force, so that the structure is stable and has a long life cycle; as shown in the figure, the driving lever 3104 is a right-angle structure bounded by a fulcrum (that is, the power arm and the resistance arm are at right angles), that is, the power arm turns at the fulcrum and bends forward, which is convenient for operation and does not interfere with the rocker arm (limit block).

[0050] As shown in the figure, the base 3103 includes a base plate and a guide sleeve, which are detachably connected and fixed, and both are provided with a through hole for the clamping rod 3102 to pass through; the base plate is detachably fixed to the rectangular seat groove by two connecting rods, and has strong adaptability; the guide sleeve is fixed to the base plate by threaded connection, and has a simple structure; as shown in the figure, the lower end of the guide sleeve is processed with an external thread, which is screwed on the internal thread on the base plate to form a connection, and a locking nut is also used to prevent it from coming out; the lower end of the rocker arm is hinged on the guide sleeve, and the structure is simple and practical. The entire locking assembly forms a module, and the hinged part is installed on the base plate after it is completely processed;

[0051] The backward direction in the present invention refers to the direction in which the power arm swings when the driving lever presses the workpiece, and the back side is the side corresponding to the backward direction, which will not be described in detail here.

[0052] Due to the action of the limit block, the resistance wall of the lever is prevented from continuing to rotate, and the rocker arm cannot continue to rotate under the action of the limit block, that is, interlocking is formed, and the axis of the clamping rod intersects with or exceeds the axis of the fulcrum backward (generally intersection is sufficient), forming a stable retraction mechanism to avoid loosening.

[0053] The reciprocating motion of the clamping rod is generally a single degree of freedom, that is, it only moves back and forth; the upper end of the rocker arm is hinged at the fulcrum of the driving lever through a fulcrum hinge shaft, and the driving lever rotates around the fulcrum under the action of external force, so that the resistance arm approaches vertical from horizontal, thereby driving the clamping rod downward to clamp the workpiece, and the rocker arm swings forward around its lower end under the lateral (no displacement) constraint of the clamping rod. When the resistance arm clamps the workpiece, the fulcrum axis at least intersects with the fulcrum hinge axis or exceeds the hinge axis backward, thereby forming a self-locking, preventing the lever from rotating under the reaction force. At the same time, the limit block limits the lever from continuing to rotate in the clamping direction, preventing it from continuing to rotate and driving the clamping rod upward, forming a clamping self-locking (that is, the mechanical structure composed of the clamping rod and the driving lever is similar to the connecting rod crank structure, but because it is limited by the limit block, a circular motion similar to the connecting rod crank is avoided, thereby forming a self-locking).

[0054] In this embodiment, a transition ring 305 is also included. The clamping device clamps the electroplating component to the liquid supply seat 301 through the transition ring 305. The transition ring is provided with a functional gap. When in use, the anode power supply is connected to the functional part of the anode through the functional gap. As shown in the figure, the transition ring 305 is a cylindrical ring. When in use, it is sleeved on the anode and the lower end is pressed on the workpiece, and the upper end is pressed by the clamping plate of the clamping device, so as to form a stable electroplating environment. The purpose of the functional gap of the transition ring is to easily clamp the power supply to the functional part of the anode through the gap. At the same time, different transition rings can be adapted to different cylinders. When in use, it is also necessary to cooperate with other structures of the prior art, such as a lower shielding ring 308 is provided between the liquid inlet seat 301 and the workpiece 4. A compensation ring 309 is also required. Both the lower shielding ring 308 and the compensation ring 309 can be replaced according to different cylinder bore diameters, and the liquid inlet seat 301 is a universal structure. The compensation ring 309 also serves as a centering structure (corresponding to the positioning hole or bolt hole on the workpiece to form a positioning) and a sealing structure to center the workpiece so that the workpiece and the anode are coaxial and sealed at the same time, thereby ensuring the quality of electroplating. This will not be repeated here. An upper shielding ring 306, a sealing structure 307 and a centering sleeve are required on the upper part of the workpiece to ensure that the upper shielding ring 306 is coaxial and sealed with the workpiece 4, thereby ensuring the quality of electroplating. This will not be repeated here. The working principle of the compensation ring belongs to the existing technical solution, that is, different compensation rings have the same outer diameter and the inner diameter corresponds to different cylinder bore diameters, thereby achieving compensation. This will not be repeated here. The function and structure of the shielding ring belong to the technical solution of the prior art, and will not be repeated here.

[0055] When the present invention is used, the hanger of the present invention, i.e., the carrier frame 1 on which the workpiece, the electroplating assembly, the liquid inlet seat 301, etc. are installed, is transferred to the electroplating station. When arriving at the electroplating station, the hanger is directly placed at the station, and the liquid inlet main pipe on the hanger is directly inserted into the liquid outlet pipe of the electroplating tank (conical matching pair) to form a connection, and the anode seat is directly facing the return tank. After the preparation work is completed, the electroplating can be started; of course, a positioning structure should be provided on the station to cooperate with the positioning structure on the carrier to ensure accurate positioning, thereby ensuring the coordination between the liquid inlet main pipe and the liquid outlet pipe and the connection of the conductive structure, so that the electroplating process can proceed smoothly;

[0056] The tooling of the present invention adopts an integral modular type, and the self-contained electroplating environment has been delivered to the work station as a whole, and the electroplating units can be arbitrarily combined, and are suitable for cylinder bodies with different numbers of cylinder holes and cylinder holes of different models and sizes. It is easy to install and position, which is conducive to realizing automated electroplating outside the tank, greatly improving work efficiency. In the structure of the present invention, it is easy and simple to replace the anode and other components. Since the anode and the anode seat are split structures and coaxial plug-in fit, of course, the plug-in fit needs to ensure the set fit gap to ensure that there is not too much leakage of the plating liquid. When replacing the anode, it can be directly taken out from the anode seat, which is simple and convenient to operate. Therefore, the present invention is completely universal for electroplating outside the cylinder tank, suitable for workpieces of various sizes, models and numbers of cylinder holes, and realizes "seamless switching" of products, avoids production capacity loss due to line stoppage, quickly meets delivery needs, minimizes the switching time of mature products, and minimizes production capacity loss.

[0057] The out-of-tank electroplating of the present invention refers to dynamic electroplating achieved by forming a plating solution circulation outside the plating solution tank, which will not be described in detail here.

[0058] This embodiment takes the engine cylinder block as an example. In fact, the technical solution claimed to be protected by the present invention is not limited to the engine cylinder block, but can also be a compressor cylinder, a plunger pump cylinder block, etc. with a cylinder block with a similar structure, which will not be repeated here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A universal hanger for cylinder bore automated electroplating, characterized in that: It includes a carrier frame and an electroplating device; The electroplating device comprises a plurality of electroplating units, wherein the electroplating units comprise a liquid supply assembly, an electroplating assembly and a pressing device, wherein the liquid supply assembly comprises a liquid supply seat for introducing electroplating liquid for forming a cyclic electroplating, and the pressing device presses the electroplating assembly onto the liquid supply seat to form the electroplating unit; The carrier frame is provided with a clamping device track and a liquid supply seat track; The liquid supply seat is freely placed on the liquid supply seat track, so that the position is adjustable and the liquid supply seats can be combined. The clamping device is installed on the clamping device track in an adjustable position.

2. The universal hanger for cylinder hole automatic electroplating according to claim 1, characterized in that: There are two liquid supply seat tracks, and the liquid supply seat is provided with two flanges corresponding to the two liquid supply seat tracks, and the liquid supply seat is supported on the liquid supply seat tracks through the flanges.

3. The universal hanger for cylinder hole automatic electroplating according to claim 1, characterized in that: The support frame is also provided with a main liquid supply channel, and the main liquid supply channel is provided with a plurality of liquid supply branch channels. The liquid supply branch channels are provided with liquid supply valves and can be communicated with the liquid inlet of the corresponding liquid supply seat.

4. The universal hanger for cylinder hole automatic electroplating according to claim 3 is characterized in that: A main liquid inlet pipe is arranged at the bottom of the main liquid supply channel, and the liquid inlet port of the main liquid inlet pipe enables the support frame to be directly and sealedly connected with the liquid outlet port arranged in the electroplating liquid tank after being in place.

5. The universal hanger for cylinder hole automatic electroplating according to claim 1, characterized in that: The liquid supply seat has a drainage cavity for introducing electroplating liquid through a liquid inlet, and the anode seat of the electroplating assembly is sealed downward through the bottom of the drainage cavity; the liquid supply assembly also includes a flow guide member arranged in the drainage cavity and sleeved on the anode seat, the flow guide member has a drainage portion with flow distribution holes, the flow distribution holes are distributed around the anode seat, and the outer edge of the drainage portion is in contact with the side wall of the drainage cavity; the liquid inlet is located at the lower part of the drainage portion and communicates with the drainage cavity.

6. The universal hanger for cylinder hole automatic electroplating according to claim 4, characterized in that: The bottom of the total liquid supply channel is connected to the total liquid inlet pipe at a low point; it also includes a liquid return groove, and after the support frame is in place, the anode seat faces the liquid return channel of the liquid return groove; the liquid return groove is provided with a liquid outlet, and the liquid outlet is located at the low point of the liquid return channel.

7. The universal hanger for cylinder hole automatic electroplating according to claim 5, characterized in that: The flow guide is a T-shaped sleeve which is externally mounted on the anode seat, the flange of the T-shaped sleeve is the drainage part, and the flow distribution holes are evenly distributed on the flange of the T-shaped sleeve; a V-shaped annular groove is provided on the end surface of the drainage part corresponding to the flow distribution holes, and the bottom of the V-shaped annular groove corresponds to the flow distribution holes.

8. The universal hanger for cylinder hole automatic electroplating according to claim 1, characterized in that: The anode of the electroplating assembly is installed on the anode seat or is formed integrally with the anode seat, and includes a working part and a functional part. The working part is used to form an electroplating environment, and the functional part extends upward to introduce an anode current; the functional part is a hollow structure, which is used to introduce the plating liquid in the electroplating environment into the center of the anode and lead it back through the anode seat.

9. The universal hanger for cylinder hole automatic electroplating according to claim 1, characterized in that: The clamping device is suspended on the clamping device track through a clamping device seat, and the clamping device seat includes a rectangular seat groove that opens upward and is accommodated in the clamping device track from bottom to top, and a hanging part that is located at the upper part of the rectangular seat groove and is bent inwardly and clamped on the upper surface of the clamping device track.

10. The universal hanger for cylinder hole automatic electroplating according to claim 8, characterized in that: It also includes a transition ring, and the clamping device presses the electroplating assembly onto the liquid supply seat through the transition ring. The transition ring is provided with a functional gap, and when in use, the anode power supply is connected to the functional part of the anode through the functional gap.

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