CN204490992U - Batch device continuous chemical plating automatic production line - Google Patents

Abstract

The automatic production line for continuous electroless plating of batch devices described in the utility model relates to the technical field of electroless plating, specifically a full-automatic production line for batch and continuous electroless nickel plating and copper plating for electronic devices, aerospace instruments, auto parts and hardware. . Its structure is that the pre-processing part and the post-processing part are respectively arranged by various functional tanks and multiple washing tanks in close contact with each other according to the process requirements in a single-layer or double-layer structure; the transmission mechanism is composed of chain transmission mechanism and It is composed of frequency-modulated motors, and circulates between each functional tank and the washing tank; the chain transmission mechanism includes two parallel chains and a sprocket supporting the chain, and a horizontal belt is installed between the two chains. There are spring clips on the top; the horizontal belt is turned back and forward one or more times in each functional tank and water washing tank to meet the process requirements. The starting end is an automatic feeding device, which continuously passes through each tank along the forward direction and then automatically unloads. The device returns to the starting end continuously and automatically, forming a continuous cycle operation.

Description

Batch device continuous electroless plating automatic production line

technical field

The automatic production line for continuous electroless plating of batch devices described in the utility model relates to the technical field of electroless plating, and is specifically a fully automatic production line for batch continuous electroless nickel plating and copper plating for electronic devices, aerospace instrument devices, auto parts and hardware parts .

Background technique

Electroless plating is more and more popular because it does not require electricity, is not limited by the shape of the device, and has superior functional properties including hardness, wear resistance, corrosion resistance, discoloration resistance, electrical properties, magnetism, solderability, and natural lubricity. It is widely used in many fields such as electronics, aerospace, auto parts and hardware production. The electroless plating methods in the prior art are mainly rack plating and barrel plating. Barrel plating is only suitable for tiny devices. During the plating process, the devices collide and rub against each other, resulting in poor coating quality.

Rack plating is currently the most widely used method of electroless plating, and its advantages are wide adaptability, reliable method, convenient adjustment of process parameters and easy maintenance. The rack plating automatic production line designed and developed in recent years uses multiple cranes above the chemical plating production line to control the take-off and landing or back and forth walking by the automatic control program, which saves manual physical strength and controls the chemical plating quality to a certain extent. Its disadvantages are: due to the long and complicated process of electroless plating, it needs to be realized by the forward and backward travel and take-off and landing of multiple cranes, so the speed is slow; the take-off and landing of the crane will bring different baths out or in, Causes pollution between different baths, increases the amount of washing water and waste water and the loss of chemical plating solution; the hangers on the production line still have to be loaded and unloaded manually, and a lot of labor is needed to bundle the parts to be plated one by one and install them on the hangers On and off, the efficiency is low and a lot of manpower is consumed. After manual binding, the devices hung on the hanger are at different distances from each other, and the plating layer will be uneven or poor in precision due to mutual adhesion and mutual covering, which is difficult to meet the technical requirements. Salt spray test requirements. The discontinuity of the process makes the degree of automation low and greatly affects the production efficiency.

Due to the lengthy pre- and post-treatment process requirements of electroless plating, the entire process has as many as 30-40 stations, and the length of the usual aluminum alloy electroless plating production line is 30-50m. The processing capacity is increasing, the quality requirements are getting higher and higher, and the demand for the development of chemical plating equipment technology is also becoming stronger and stronger. A more efficient continuous electroless plating fully automatic production line that washes water and reduces waste water.

In view of the problems existing in the above-mentioned prior art, it is very necessary to study and design a new type of continuous electroless plating automatic production line for batch devices, so as to overcome the problems existing in the prior art.

Utility model content

In view of the problems existing in the above-mentioned prior art, the purpose of this utility model is to research and design a new type of continuous electroless plating full-automatic production line for batch devices. To solve the problems existing in the prior art:

1. The number of operators is large, labor-intensive and labor-intensive, and the production efficiency is low;

2. It covers a large area and usually requires a 30-50m long production line;

3. The washing method is complex and unreasonable waste water, which increases the waste of liquid medicine, and the discharge of waste water is large, causing pollution.

The technical solution of the present utility model is realized in this way:

The batch device continuous chemical plating automatic production line described in the utility model includes an automatic feeding device, a pre-processing part, a main chemical nickel plating part, a post-processing part, a transmission mechanism and an automatic feeding device; the batch device continuous chemical plating is fully automatic The production line is arranged in the order of automatic feeding device, pre-processing part, main electroless nickel plating, post-processing part and automatic unloading device, and is cyclically linked by a transmission mechanism; it is characterized in that the pre-processing part and post-processing part are composed of Various functional tanks and multiple washing tanks are closely arranged in a single-layer or double-layer structure according to technological requirements; Circular advance; the chain transmission mechanism includes two parallel chains and a sprocket supporting the chain. A horizontal belt is installed between the two chains. The horizontal belt is installed at an integral multiple of the chain pitch. Installed on the outer plate of the chain, spring clips are installed on the horizontal belt; the horizontal belt is turned back and forward one or more times in each functional tank and water washing tank to meet the process requirements, and the starting end is an automatic feeding device, which continues along the forward direction After passing through each tank, the automatic feeding device returns to the starting end for continuous automatic operation, forming a continuous cycle operation. During the production process, the residence time of the material in each process tank according to the process requirements is realized by controlling the liquid level in each tank. of.

The pre-processing part described in the utility model is arranged between the automatic feeding device and the main chemical galvanizing part, and is arranged in a double-layer structure; the pre-processing part includes a polishing tank, an ultrasonic degreasing tank, a micro-etching tank, a galvanizing tank, Zinc stripping tank, secondary zinc dipping tank, alkaline nickel plating tank and multiple washing tanks; the washing tank is placed between adjacent functional tanks, and the transmission mechanism drives the horizontal belt to pass through the upper polishing tank, washing tank and ultrasonic degreasing tank And the water washing tank enters the micro-etching tank, water washing tank, zinc dipping tank, water washing tank, dezincification tank, water washing tank, secondary zinc dipping tank and water washing tank in the lower layer, and then returns to the upper layer to enter the alkaline galvanizing tank and water washing tank. Go to the main electroless galvanizing part for the electroless galvanizing process.

The main electroless nickel plating part described in the utility model is a large electroless galvanizing tank, and the transmission structure drives the horizontal bar to go back and forth in the chemical galvanizing tank for many times, and performs electroless galvanizing while advancing.

The post-processing part described in the utility model is arranged between the main chemical galvanizing part and the automatic feeding device, and is arranged in a double-layer structure; the post-processing part includes a passivation tank, a closed tank, a drying tank and a plurality of washing tanks The washing tank is placed between the adjacent functional tanks, and the transmission mechanism drives the horizontal bar to come out of the main chemical galvanizing tank, and then enter the lower closed tank, washing tank and drying tank through the upper washing tank, passivation tank and washing tank Then enter the automatic unloading device for unloading.

The horizontal belt described in the utility model is a strip-shaped horizontal belt made of metal or functional plastic, one of which is made of 0.5-2mm thick stainless steel or carbon steel strips, punched into channel steel form, and has holes on it. Used to hold spring clips, with holes on both ends for fastening to the side plate of the chain. The spring clip on the horizontal belt of the chain transmission mechanism is specially designed and processed according to the characteristics and shape of different workpieces. According to the characteristics of chemical plating, the spring clip cannot be clamped to the surface of the workpiece and must be kept loose; the horizontal belt and The spring clip on it is made of metal or plastic; the horizontal belt and the spring clip are made of metal. It is necessary to first fix the horizontal belt and the spring clip into one, then coat it with hanging glue or plastic, and then fix it to the chains on both sides. On the side plate, the workpiece to be plated is clamped on the spring clip.

Each functional tank, water washing tank and main chemical galvanizing tank of the pre-processing part and post-processing part described in the utility model are equipped with a cover, an exhaust port and a condensation return dripping device to avoid the overflow of steam or waste gas, and the main chemical plating tank The condensate return guide plate is installed in the cover of the zinc tank to avoid the overflow of steam or exhaust gas, and the operating environment is improved to facilitate exhaust gas treatment. The condensate return guide plate is installed in the top cover of the main coating tank to prevent condensate overflow and reduce water waste.

The sprocket machine chain in the transmission mechanism described in the utility model is made of stainless steel, metal coated with plastic or functional plastic.

In the automatic production line for continuous electroless plating of batch devices described in the utility model, when stainless steel chains are used, in order to avoid the precipitation of the plating layer on them, not only nitric acid pre-passivation and anode protection are adopted, but also the chains can be pre-passivated before entering the main electroless nickel plating tank. Two nitric acid passivation tanks are set at the positions of the chains on both sides. The feature is that the two passivation tanks are separated and independent from each other on both sides, so that only the chain enters the passivation tank, and the workpiece clamped on the horizontal belt is still in the air. Affect the surface state of the workpiece to be plated.

In the utility model, when electroless nickel plating is performed on copper materials, electroplating nickel plating is required instead of galvanizing. The automatic line insulates the transmission stainless steel chain and the horizontal belt, and connects all the horizontal belts with copper wires wrapped with insulating materials to form a loop. In this way, when electroplating is required, only the cathodic current needs to be introduced through the friction of the horizontal belt to realize the nickel electroplating process, while the anode current can still be passed through the transmission chain for anodic protection, so as to avoid the electroless plating of the nickel layer on it, so as to realize the electroless nickel of the copper material. The organic combination of electroplating and electroless plating is realized on the same production line.

The operating steps of the batch device continuous chemical plating automatic production line described in the utility model are as follows:

Step 1: Put the whole set of equipment in place, connect and install the piping, and the debugging is normal.

Step 2. Select the appropriate pre-treatment solution and electroless plating solution and add them to the respective tanks, so that the liquid level height should be determined according to the immersion time set for each functional tank, and start the chain transmission system driven by the frequency modulation motor.

Step 3: Turn on the automatic material sorting and sorting device to load the material into the material box, set the required electroless plating time and the corresponding main motor conveying chain speed and automatic feeding speed according to the process requirements.

Step 4: After starting, after the set processing time, the entire chemically plated material is discharged from the post-processing tank, and the blowing and electric drying are turned on.

Step 5. Manually pour the materials into the material box of the automatic material sorting and sorting device in time, and collect the electrochemically plated materials in time at the discharge place.

The entire process sequence of a typical aluminum alloy electroless nickel plating (high phosphorus) is: automatic sorting, sorting and loading of materials→automatic loading→water washing→polishing→hot water washing→tap water washing→lighting→tap water washing→ultrasonic degreasing hot water washing →Secondary water washing→Micro-etching→Secondary water washing→Pure water washing→Primary zinc immersion→Secondary water washing→Pure water washing→Zinc stripping→Secondary water washing→Pure water washing→Secondary zinc immersion→Secondary water washing→Pure water washing→Alkaline Nickel plating→secondary water washing→pure water washing→acid chemical nickel plating→hot water washing→cold water washing→passivation→hot pure water washing→cold pure water washing→sealing→cold pure water washing→hot pure water washing→air knife drying→electric heating drying → Automatic loading and unloading.

The advantages of the utility model are obvious, mainly manifested in:

1. The entire electroless plating process, including automatic sorting and sorting of materials, loading, loading and unloading, is fully automated and continuous, which greatly saves the number of operators and manual physical strength, improves production efficiency, and reduces production and labor costs.

2. The equipment is compact, occupies less land, and is closely connected. On the premise of the same or increased processing capacity, the production line that is usually 30-50m long is greatly shortened to 4-5m in length. The washing method is simple and reasonable, saving water and energy, and reducing waste water discharge. The electroless plating tank and the pre- and post-treatment functional tanks are covered and equipped with exhaust, and there is basically no damage to the human body by the smell of the chemical liquid. The close connection between the tanks eliminates the escape, drip, and leakage of the liquid medicine and washing water, reduces the loss of the liquid medicine, and greatly improves the operating environment on site, which is clean and orderly.

3. The spring clips and horizontal strips coated with plastic or hanger glue on the outside have no plating precipitation, eliminating the need for deplating, avoiding the waste of precious metals from plating and binding wires, and saving production costs.

4. The materials are held by the spring clips at the same distance from each other, without any adhesion and cover, the residence time in the solution is the same, the coating is uniform, and the performance of the salt spray test is improved.

5. Increasing the simultaneous feeding of multi-material parts in the same row can increase the output without increasing the equipment footprint.

6. The equipment is stable in operation, convenient in maintenance, safe and reliable.

7. Program control can be used, and various control programs for optimized process programming provide users with a variety of choices, which can meet the needs of users' self-programming. Various operating process conditions and historical data

Parameters can be stored and recalled.

The utility model has the advantages of novel structure, reasonable layout, stable operation, uniform coating, convenient maintenance, safety and reliability, mass production, sanitation and environmental protection, etc., and its mass production will definitely produce positive social benefits and significant economic benefits.

Description of drawings

The utility model has 2 accompanying drawings, wherein:

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the schematic diagram of the structure of the horizontal belt and the spring clip.

In the picture: 1. Automatic feeding, 2. Polishing, 3. Washing, 4. Ultrasonic degreasing, 5. Micro-etching, 6. Zinc dipping, 7. Zinc stripping, 8. Secondary zinc dipping, 9. Alkaline Nickel plating, 10. Main chemical nickel plating, 11. Passivation, 12. Sealing, 13. Drying, 14. Automatic feeding, 15. Horizontal belt, 16. Spring clip, 17. Workpiece to be plated.

Detailed ways

The specific implementation of the utility model is shown in the accompanying drawings, including an automatic feeding device 1, a pre-processing part, a main electroless nickel plating part, a post-processing part, a transmission mechanism and an automatic feeding device 14; a batch device continuous chemical plating automatic production line Arranged in the order of automatic feeding device 1, pre-processing part, main electroless nickel plating, post-processing part and automatic unloading device, and cyclically linked by a transmission mechanism; it is characterized in that the described pre-processing part and post-processing part are composed of Various functional tanks and multiple washing tanks 3 are closely arranged according to the process requirements in a single-layer or double-layer structure; The chain transmission mechanism includes two chains parallel to each other and a sprocket wheel supporting the advancement of the chains. A horizontal belt 15 is installed between the two chains. The horizontal belt 15 is installed according to an integer multiple of the chain pitch. The two ends of belt 15 are mounted on the chain outer plate, and spring clamp 16 is housed on the horizontal belt 15; The automatic feeding device 1 continuously passes through each groove along the advancing direction and then returns to the starting end through the automatic unloading device 14 to continue automatically, forming a continuous cycle operation.

The pre-treatment part is arranged between the automatic feeding device 1 and the main chemical galvanizing part, and is arranged in a double-layer structure; the pre-treatment part includes a polishing tank 2, an ultrasonic degreasing tank 4, a micro-etching tank 5, a zinc dipping tank 6, and an annealing tank. Zinc tank 7, secondary galvanizing tank 8, alkaline nickel plating tank 9 and multiple washing tanks 3; the washing tanks 3 are placed between adjacent functional tanks, and the transmission mechanism drives the horizontal belt 15 through the upper polishing tank 2, Water washing tank 3, ultrasonic degreasing tank 4 and water washing tank 3 enter the lower micro-etching tank 5, water washing tank 3, zinc dipping tank 6, water washing tank 3, zinc stripping tank 7, water washing tank 3, secondary zinc dipping tank 8 and water washing Return to the upper layer after tank 3 and enter the alkaline galvanizing tank 9 and water washing tank 3 to enter the main chemical galvanizing part to carry out the chemical galvanizing process.

The main electroless nickel plating part is a large electroless galvanizing tank 10, and the transmission structure drives the horizontal bar 15 to go back and forth in the chemical galvanizing tank 10 for many times, and the electroless galvanizing is performed while advancing.

The post-processing part is arranged between the main chemical galvanizing part and the automatic unloading device 14, and is arranged in a double-layer structure; the post-processing part includes a passivation tank 11, a closed tank 12, a drying tank 13 and a plurality of washing tanks 3; The washing tank 3 is placed between adjacent functional tanks, and the transmission mechanism drives the horizontal bar 15 to come out from the main chemical galvanizing tank 10, and then enters the lower closed tank 12, After washing tank 3 and drying tank 13, enter automatic unloading device 14 to unload.

Cross-belt 15 is stamped into channel steel form, and perforation is arranged on it and is used for fixing spring clip 16, and cross-belt 15 two perforations are fixed on the side plate of chain, clamps workpiece 17 to be plated on spring clip 16; The spring clip 16 on it is made of metal or plastic material; the horizontal belt 15 and the spring clip 16 are made of metal, and the horizontal belt and the spring clip need to be fixed into one, and then the whole is coated with hanger glue or plastic, and then fixed to the two sides. side of the chain on the side plate.

Each functional tank of the pre-processing part and the post-processing part and the washing tank 3 and the main chemical galvanizing tank 10 are all provided with a cover, an exhaust port and a condensation return dripping device to avoid the overflow of steam or waste gas, and the main chemical galvanizing tank 10 The condensate return guide plate is set in the cover.

The sprocket machine chain in the transmission mechanism is made of stainless steel, metal-coated plastic or functional plastic; the main plating tank and sprocket chain are made of stainless steel and need passivation treatment and anodic protection.

The above is only a preferred embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto, all those skilled in the art are within the technical scope disclosed in the utility model, according to the present invention Any equivalent replacement or change of the technical solution of the utility model and the concept of the utility model shall be covered within the protection scope of the utility model.

Claims (7)

1. A fully automatic production line for continuous electroless plating of batch devices, comprising an automatic feeding device (1), a pre-processing part, a main electroless nickel plating part, a post-processing part, a transmission mechanism and an automatic feeding device (14); batch devices are continuously The automatic electroless plating production line is arranged in the order of the automatic feeding device (1), pre-treatment part, main electroless nickel plating, post-processing part and automatic unloading device, and is cyclically linked by the transmission mechanism; it is characterized in that the pre-treatment The part and the post-processing part are respectively composed of various functional tanks and multiple washing tanks (3) which are closely arranged in a single-layer or double-layer structure according to the process requirements; the transmission mechanism is composed of a chain transmission mechanism and a frequency modulation motor. And advance circularly between each functional tank and the washing tank (3); the chain transmission mechanism includes two chains parallel to each other and a sprocket wheel supporting the advancement of the chain, and a horizontal belt (15) is installed between the two chains. Band (15) is installed by the integral multiple of chain pitch, and the two ends of cross band (15) are contained on chain outer plate, and spring clamp (16) is housed on the cross band (15); The tank and washing tank (3) are turned back and forwarded one or more times within the time required by the process. The starting end is the automatic feeding device (1), and the automatic feeding device (14) passes through each tank continuously along the forward direction and then passes through the automatic feeding device (14). Return to the starting end continuously and automatically, forming a continuous cycle operation. 2. The continuous electroless plating automatic production line for batch devices according to claim 1, characterized in that said pretreatment part is arranged between the automatic feeding device (1) and the main electroless galvanizing part, and is a double-layer structure. Cloth; the pre-treatment part includes polishing tank (2), ultrasonic degreasing tank (4), micro-etching tank (5), zinc dipping tank (6), zinc stripping tank (7), secondary zinc dipping tank (8), alkali permanent nickel plating tank (9) and multiple washing tanks (3); the washing tanks (3) are placed between adjacent functional tanks, and the transmission mechanism drives the horizontal belt (15) through the upper polishing tank (2), washing tank (3), ultrasonic degreasing tank (4) and water washing tank (3) enter the micro-etching tank (5), water washing tank (3), zinc dipping tank (6), water washing tank (3), zinc stripping tank (7) in the lower layer ), water washing tank (3), secondary galvanizing tank (8) and water washing tank (3) and then return to the upper layer to enter the alkaline galvanizing tank (9) and water washing tank (3) and then enter the main chemical galvanizing part for Electroless galvanizing process. 3. The continuous electroless plating full-automatic production line for batch devices according to claim 1 is characterized in that said main electroless nickel plating part is a large-scale electroless galvanizing tank (10), and the transmission structure drives the horizontal bar (15) in the chemical In the galvanizing tank (10), multiple turns are carried out, and the electroless galvanizing is carried out while advancing. 4. The continuous electroless plating automatic production line for batch devices according to claim 1, characterized in that the post-processing part is arranged between the main electroless galvanizing part and the automatic blanking device (14), and is a double-layer structure. Cloth; post-processing part comprises passivation tank (11), closed tank (12), drying tank (13) and a plurality of washing tanks (3); washing tank (3) is placed between adjacent functional tanks, The transmission mechanism drives the horizontal bar (15) to come out from the main chemical galvanizing tank (10), and then enters the lower closed tank (12) through the upper washing tank (3), passivation tank (11), and washing tank (3). After groove (3) and drying groove (13), enter into automatic unloading device (14) unloading. 5. The automatic production line for continuous electroless plating of batch devices according to claim 1, characterized in that the horizontal strip (15) is punched into a channel steel form, and there are holes on it for fixing spring clips (16), and the horizontal strip (15) The openings at both ends of the belt (15) are fixed to the side plates of the chain, and the workpiece (17) to be plated is clamped on the spring clamp (16); the horizontal belt (15) and the spring clamp (16) on it are made of metal or plastic; Horizontal belt (15) and spring clip (16) adopt metal material and need first horizontal belt and spring clip be fixed as a whole, then its whole is coated with hanger glue or coated with plastic, is fixed to the side plate of the chain of both sides then. 6. The continuous electroless plating automatic production line for batch devices according to claim 1, characterized in that each functional tank and washing tank (3) and main chemical galvanizing tank (10) of the pre-processing part and the post-processing part All are provided with cover, exhaust port and condensate return dripping device, avoid the overflow of steam or waste gas, the cover of main electroless galvanizing tank (10) is provided with condensed water backflow guide plate. 7. The batch device continuous electroless plating automatic production line according to claim 1, characterized in that the sprockets and chains are made of stainless steel, metal-coated plastic or functional plastics; the main plating tank and sprocket chains are made of stainless steel. Passivation treatment and plus anodic protection.