Rapid cooling and shaping structure of metal piece vacuum coating device

Abstract

A rapid cooling and shaping structure of a metal piece vacuum coating device comprises a cooling coil, a cooling liquid circulating system and a refrigerating device, a machine body of the metal piece vacuum coating device comprises an inner layer metal wall and an outer layer metal wall, and cooling cavity structures are formed at the left side, the right side and the rear side of the machine body and between the inner layer metal wall and the outer layer metal wall. The cooling coil pipe is distributed in the cooling cavity structure in a snakelike manner; the cooling liquid circulating system is arranged on one side outside the machine body and comprises a cooling liquid storage box and a circulating pump, and the circulating pump is connected with the cooling liquid storage box and the cooling coil; and the refrigerating device is connected with the cooling liquid storage box. According to the rapid cooling and shaping structure of the metal piece vacuum coating device, through the reasonable cooling cavity structure, the cooling coil pipes distributed in a snakelike mode, the cooling liquid circulating system and the refrigerating system, the efficient, uniform and accurate cooling effect is achieved, and the coating quality and the production efficiency of metal pieces are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum coating technology field, concretely relates to a kind of quick cooling and shaping structure of metal piece vacuum coating device. BACKGROUND

[0002] In the field of metal processing, vacuum coating technology, as an important means that can significantly improve the performance and appearance of metal parts, has been widely used. By plating a specific film on the surface of metal parts, its wear resistance, corrosion resistance can be enhanced, and it can also be endowed with unique optical, electrical and other properties.

[0003] At present, the existing metal piece vacuum coating device cooling and shaping link has many problems. On the one hand, the cooling efficiency is low, and the metal piece cooling time is too long, which not only prolongs the entire coating cycle and reduces the production efficiency, but also may affect the quality of coating, such as causing the adhesion between the coating layer and the metal piece substrate to decrease, and causing the coating layer to fall off and other problems. On the other hand, the cooling uniformity is difficult to guarantee. Further, the metal piece is deformed, which affects its size accuracy and appearance quality.

[0004] In order to solve the above problems, the utility model designs a kind of quick cooling and shaping structure of metal piece vacuum coating device, through the cooling cavity structure of reasonable, the cooling coil pipe of serpentine distribution mode and cooling liquid circulation system, refrigeration system, realizes high efficiency, uniform, accurate cooling effect, improves the coating quality and production efficiency of metal piece. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above shortcomings, and provides a kind of quick cooling and shaping structure of metal piece vacuum coating device, by carefully designing cooling cavity structure, adopting the cooling coil pipe of serpentine distribution, and being equipped with cooling liquid circulation system and refrigeration system, realizes high efficiency, uniform, accurate cooling effect, improves the coating quality and production efficiency of metal piece, and has wide application prospect.

[0006] Technical solution: a kind of quick cooling and shaping structure of metal vacuum coating device, including cooling coil, cooling liquid circulation system and refrigeration device, the body of the metal vacuum coating device includes inner metal wall and outer metal wall, an independent cooling cavity structure is formed between the left, right and rear side of the body and the inner metal wall and the outer metal wall, the inside of the body is vacuum coating chamber, the cooling coil is serpentine distribution in cooling cavity structure, the vacuum pump is provided on the top of the body, the air outlet of the vacuum pump is communicated with the inside of vacuum coating chamber by pipeline, the bottom of the vacuum coating chamber is provided with multiple-point evaporation source;The cooling liquid circulation system is arranged on one side of the body, the cooling liquid circulation system includes cooling liquid storage tank, circulating pump, the cooling liquid storage tank is used to store cooling liquid, the circulating pump is connected with cooling liquid storage tank and cooling coil for the circulation of cooling liquid;The refrigeration device 4 is arranged on one side of cooling liquid storage tank, and the refrigeration device is connected with the cooling liquid storage tank for refrigerating the cooling liquid.

[0007] The quick cooling and shaping structure of metal vacuum coating device forms independent cooling cavity structure between the left, right and rear side of the body and the inner metal wall and the outer metal wall, makes full use of the space inside the body structure, without occupying too much external space to set cooling area, so that the structure of the whole vacuum coating device is more compact and reasonable.

[0008] The cooling coil is serpentine distribution in cooling cavity structure, and the serpentine distribution mode can make the cooling liquid flow uniformly in the cooling cavity, so that the heat exchange with the air or parts around the metal parts to be cooled in the body is better. Compared with other simple coil layout, serpentine distribution can effectively avoid cooling blind area, so as to improve the quality of metal cooling and shaping.

[0009] Further, the quick cooling and shaping structure of metal vacuum coating device, the material of the inner metal wall is copper;The material of the outer metal wall is duplex stainless steel.

[0010] The inner wall of the body is made of metal material (copper) with excellent heat conductivity, copper has excellent heat conductivity, and its thermal conductivity coefficient is about 386 W / (m·K). It has good chemical stability and is not easy to be corroded in general environment, and can maintain good heat conductivity for a long time. The inner wall can efficiently conduct heat. The outer wall of the body is made of metal material (duplex stainless steel) with good heat insulation performance. This kind of stainless steel combines the advantages of austenite and ferrite, not only has good strength and corrosion resistance, but also has outstanding heat insulation performance, for example, 2205 duplex stainless steel, its thermal conductivity coefficient is about 10.5 W / (m·K), compared with other metal materials, it can reduce the heat loss from the body to the external environment.

[0011] Further, the quick cooling and shaping structure of the metal vacuum coating device has a sealing door arranged on the front side of the body and an observation window arranged on the sealing door.

[0012] The observation window arranged on the sealing door of the chamber can ensure the vacuum sealing and facilitate the operator to observe the coating condition of the metal inside the chamber during the operation of the device.

[0013] Further, the quick cooling and shaping structure of the metal vacuum coating device has a vacuum pump composed of a mechanical pump and a molecular pump.

[0014] The mechanical pump is used as a front-stage pump, and the chamber pressure is first extracted to a certain degree, and then the molecular pump continues to reduce the pressure to a higher vacuum degree.

[0015] Further, the quick cooling and shaping structure of the metal vacuum coating device has a plurality of small evaporation sources arranged in the bottom of the vacuum coating chamber.

[0016] The multi-point evaporation source can evaporate the coating material from multiple positions at the same time, thereby improving the uniformity of the coating.

[0017] Further, the quick cooling and shaping structure of the metal vacuum coating device has a plurality of small evaporation sources arranged in the bottom of the vacuum coating chamber.

[0018] The metal is clamped on the clamp, and the clamp is driven to rotate by the clamp driving assembly during the coating process, thereby further improving the uniformity of the coating.

[0019] Further, the quick cooling and shaping structure of the metal vacuum coating device has a plurality of small evaporation sources arranged in the bottom of the vacuum coating chamber.

[0020] The motor is started, the motor shaft drives the small conical gear to rotate, the small conical gear drives the driving shaft to rotate through the large conical gear, thereby driving the clamp to rotate.

[0021] Furthermore, in the rapid cooling and shaping structure of the aforementioned metal vacuum coating device, a bellows is installed at the position where the drive shaft passes through the machine body.

[0022] A bellows is installed at the location where the drive shaft passes through the machine body. The bellows are generally made of materials such as metal or rubber and are flexible. Metal bellows have good sealing performance, high temperature resistance, and high pressure resistance, making them suitable for environments with high sealing requirements. Rubber bellows have good flexibility and elasticity, and are relatively low in cost. They can ensure that the cavity still has good sealing performance after the machine body is provided with a through hole for the drive shaft to pass through.

[0023] The beneficial effects of this utility model are as follows: The rapid cooling and shaping structure of the metal vacuum coating device of this utility model has a reasonable overall layout. Independent cooling chamber structures are formed on the left, right, and rear sides of the machine body, as well as between the inner and outer metal walls. This makes full use of the internal space of the machine body structure, without requiring excessive external space to set up cooling areas. The serpentine distribution of cooling coils, combined with the coolant circulation system and refrigeration system, allows the coolant to flow evenly in the cooling chamber, thereby better exchanging heat with the air or components around the metal parts to be cooled inside the machine body. This significantly shortens the cooling time after metal coating, allowing the equipment to perform the next coating operation more quickly, thereby improving overall production efficiency and having broad application prospects. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of the vacuum coating device for metal parts described in this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the vacuum coating device for metal parts described in this utility model;

[0026] Figure 3 This is a simplified connection diagram of the rapid cooling and shaping structure of the vacuum coating device for metal parts described in this utility model;

[0027] Figure 4 This is a top cross-sectional view of the vacuum coating apparatus for metal parts described in this utility model;

[0028] In the diagram: 1. Body; 11. Inner metal wall; 12. Outer metal wall; 13. Cooling chamber structure; 14. Vacuum coating chamber; 15. Sealed door; 16. Observation window; 2. Cooling coil; 3. Coolant circulation system; 31. Coolant storage tank; 32. Circulation pump; 4. Refrigeration device; 5. Vacuum pump; 6. Multi-point evaporation source; 7. Fixture; 8. Fixture drive assembly; 81. Motor; 82. Drive shaft. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 , 2, 3, 4 and embodiment 1, embodiment 2, further illustrate the utility model.

[0030] Embodiment 1

[0031] As Figure 1 , 3 Indicated, the quick cooling and shaping structure of the metal piece vacuum coating device, including cooling coil 2, cooling liquid circulation system 3, refrigeration device 4.

[0032] Wherein, as Figure 1 , 4 Indicated, the machine body 1 of the metal piece vacuum coating device includes inner metal wall 11 and outer metal wall 12, and an independent cooling cavity structure 13 is formed between the left, right and rear positions of the machine body 1 and the inner metal wall 11 and the outer metal wall 12, and the inside of the machine body 1 is a vacuum coating chamber 14. The above design makes full use of the space inside the machine body 1 structure, without occupying too much external space to set up the cooling area, so that the structure of the whole vacuum coating device is more compact and reasonable, and the cooling cavity structure 13 surrounds the surrounding area of the metal piece.

[0033] Further, the cooling coil 2 is distributed in the cooling cavity structure 13 in a serpentine shape. The serpentine distribution mode can make the cooling liquid flow uniformly in the cooling cavity structure 13, so as to better exchange heat with the air or parts around the metal piece to be cooled in the vacuum coating chamber 14. Compared with other simple coil layout, the serpentine distribution can effectively avoid the cooling blind area, so as to improve the quality of metal piece cooling and shaping.

[0034] Further, the material of the inner metal wall 11 is copper, which has excellent thermal conductivity, and its thermal conductivity coefficient is about 386 W / (m·K). It has good chemical stability and is not easy to be corroded in general environment, and can maintain good thermal conductivity for a long time. The inner wall can efficiently conduct heat. The material of the outer metal wall 12 is duplex stainless steel, such as 2205 duplex stainless steel, and its thermal conductivity coefficient is about 10.5 W / (m·K), which can reduce the heat loss from the machine body to the external environment compared with other metal materials.

[0035] As Figure 3As shown, the cooling liquid circulating system 3 comprises a cooling liquid storage tank 31, a circulating pump 32. A cooling liquid storage tank 31 is arranged outside the body 1 for storing cooling liquid such as ethylene glycol aqueous solution, and the circulating pump 32 is connected to the cooling liquid storage tank 31 and the cooling coil 2 in the cooling cavity structure 13. The circulating pump 32 pumps the cooling liquid from the cooling liquid storage tank 31 into the cooling coil 2, which surrounds the peripheral region of the metal piece, ensuring that the cooling liquid can uniformly flow through the peripheral region of the metal piece and take away the heat. After flowing through the cooling cavity structure 13, the cooling liquid returns to the cooling liquid storage tank, forming a cycle.

[0036] The refrigeration device 4 is installed on the cooling liquid storage tank for reducing the temperature of the cooling liquid. The refrigeration device 4 can adopt a compressor refrigeration system, which comprises a circulating system composed of a refrigeration compressor, a condenser, an evaporator and the like, to control the temperature of the cooling liquid within a suitable range (for example, -20℃ to 0℃).

[0037] After the film plating of the metal piece is completed, the rapid cooling and shaping structure is started. The circulating pump 32 starts to work to pump the cooling liquid in the cooling liquid storage tank 31, which has been cooled by the refrigeration device 4, into the cooling coil 2 in the cooling cavity structure 13. The cooling liquid flows in the cooling coil 2 and exchanges heat with the hot air around the metal piece through the inner metal wall 11, rapidly taking away the heat on the surface of the metal piece to rapidly cool the plated film layer.

[0038] Embodiment 2

[0039] Based on the above structural basis of embodiment 1, as shown in Figure 1 、 2 .

[0040] As shown in Figure 1 、 2 , the metal piece vacuum plating device disclosed by the utility model is provided with a sealing door 15 rotatably arranged on the front side of the body 1, and an observation window 16 is arranged on the sealing door 15. The sealing door 15 is used for opening and closing, and the observation window 16 is arranged on the sealing door of the body 1, which can ensure the vacuum sealing property and facilitate the observation of the plating film condition of the internal metal piece by the operator during the operation of the equipment.

[0041] Further, a vacuum pump 5 is arranged on the top of the body 1, the suction port of the vacuum pump 5 is communicated with the inside of the vacuum plating chamber 14 through a pipeline, and a multi-point evaporation source 6 is arranged on the bottom of the vacuum plating chamber 14.

[0042] Further, the vacuum pump 5 of the embodiment adopts a combination of a mechanical pump and a molecular pump, the mechanical pump is used as a backing pump, the chamber pressure is first extracted to a certain degree, and then the molecular pump continues to reduce the pressure to a higher vacuum degree. The molecular pump realizes high vacuum extraction by making gas molecules flow directionally through a high-speed rotating rotor. This design can realize efficient air extraction in a wide pressure range. The evaporation source of the embodiment adopts a multi-point evaporation source 6, which can evaporate the coating material from multiple positions at the same time, thereby improving the uniformity of the coating.

[0043] Further, a clamp 7 is arranged in the vacuum coating chamber 14 for clamping the metal piece, and a clamp driving assembly 8 is arranged on the top of the body 1, the clamp driving assembly 8 is connected with the clamp 7 for driving the clamp 7 to rotate. The metal piece is clamped on the clamp 7, and during the coating process, the clamp 7 is driven to rotate by the clamp driving assembly 8, thereby further improving the uniformity of the coating.

[0044] The clamp driving assembly 8 comprises a motor 81 and a driving shaft 82, the motor 81 is fixedly provided with a small conical gear at the shaft end, the driving shaft 82 penetrates the top of the body 1, the driving shaft 82 is fixedly provided with a large conical gear at the upper end, the large conical gear is engaged with the small conical gear at the shaft end of the motor 81, and the lower end of the driving shaft 82 is fixedly connected with the clamp 7. When the motor 81 is started, the shaft of the motor 81 drives the small conical gear to rotate, and the small conical gear drives the driving shaft 82 to rotate through the large conical gear, so that the clamp 7 drives the metal piece to rotate.

[0045] Further, in order to ensure that the body 1 still has good sealing performance after the through hole for the driving shaft 82 is arranged, a bellows is arranged at the position where the driving shaft 82 penetrates the body 1.

[0046] The metal piece vacuum coating device is characterized in that the working process is as follows:

[0047] (1) Coating stage

[0048] Open the sealing door 15, clamp the metal piece to be coated on the clamp 7, and close the sealing door 15. Start the vacuum pump 5, and extract the vacuum coating chamber 14 to the required vacuum degree. Turn on the multi-point evaporation source 6, and at the same time, the clamp driving assembly 8 drives the clamp 7 to rotate, and the metal piece is coated. At this time, the cooling liquid circulation system 3 and the refrigeration device 4 are in standby state.

[0049] (2) Cooling stage

[0050] After the coating is completed, the multi-point evaporation source 6 is closed.

[0051] Start the cooling liquid circulating system 3 and the refrigeration device 4. The cooling liquid circulates in the cooling coil 2, exchanges heat with the hot air around the metal piece through the inner metal wall 11, quickly takes away the heat on the surface of the metal piece, and rapidly cools the coating layer. Under the action of the refrigeration device 4, the temperature of the cooling liquid is continuously reduced, and the metal piece is continuously cooled and shaped.

[0052] After the cooling is completed, the cooling liquid circulating system 3 and the refrigeration device 4 are closed, the sealing door 15 is opened, and the metal piece is taken out.

[0053] Through the above design, the rapid cooling and shaping structure can realize rapid cooling and shaping of the metal piece without interfering with the coating process, and improve the overall performance and production efficiency of the vacuum coating equipment.

[0054] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements can be made, and these improvements should also be considered as the protection scope of the present application.

Claims

1. A quick cooling and shaping structure of a vacuum coating device for metal parts, comprising a cooling coil (2), a cooling liquid circulation system (3) and a refrigeration device (4), characterized in that: The metal piece vacuum coating device body (1) includes an inner metal wall (11) and an outer metal wall (12), a separate cooling cavity structure (13) is formed between the left, right and rear sides of the body (1) and the inner metal wall (11) and the outer metal wall (12), the inside of the body (1) is a vacuum coating chamber (14), the cooling coil (2) is distributed in a serpentine shape in the cooling cavity structure (13), a vacuum pump (5) is arranged on the top of the body (1), the air outlet of the vacuum pump (5) is connected to the inside of the vacuum coating chamber (14) through a pipeline, and a multi-point evaporation source (6) is arranged at the bottom of the vacuum coating chamber (14); the cooling liquid circulating system (3) is arranged on one side of the body (1), the cooling liquid circulating system (3) includes a cooling liquid storage tank (31) and a circulating pump (32), the cooling liquid storage tank (31) is used for storing cooling liquid, and the circulating pump (32) is connected to the cooling liquid storage tank (31) and the cooling coil (2) to circulate the cooling liquid; the refrigeration device (4) is arranged on one side of the cooling liquid storage tank (31), and the refrigeration device (4) is connected to the cooling liquid storage tank (31) to refrigerate the cooling liquid.

2. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 1, wherein, The material of the inner metal wall (11) is copper, and the material of the outer metal wall (12) is duplex stainless steel.

3. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 1, wherein, A sealing door (15) is rotatably arranged on the front side of the body (1), and an observation window (16) is arranged on the sealing door (15).

4. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 1, wherein, The vacuum pump (5) is a combination of a mechanical pump and a molecular pump.

5. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 1, wherein, The multi-point evaporation source (6) is composed of a plurality of small evaporation sources (61), and the evaporation sources (61) are uniformly distributed at the bottom of the vacuum coating chamber (14).

6. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 1, wherein, A clamp (7) is arranged in the vacuum coating chamber (14) for clamping metal pieces, and a clamp driving assembly (8) is arranged on the top of the body (1), the clamp driving assembly (8) is connected to the clamp (7) to drive the rotation of the clamp (7).

7. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 6, wherein, The clamp driving assembly (8) includes a motor (81) and a drive shaft (82), a small conical gear is fixedly arranged at the shaft end of the motor (81), the drive shaft (82) penetrates the top of the body (1), a large conical gear is fixedly arranged at the upper end of the drive shaft (82), the large conical gear is engaged with the small conical gear at the shaft end of the motor (81), and the lower end of the drive shaft (82) is fixedly connected to the clamp (7).

8. The quick cooling and shaping structure of the vacuum coating device for metal parts according to claim 7, wherein, A bellows is arranged at the position where the drive shaft (82) penetrates the body (1).

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