Environment-friendly ion plating process, plating layer structure and production system of watch parts

Abstract

The present application belongs to the field of coating production technology, in particular to an environmental protection type ion coating process for watch parts, a coating structure and a production system thereof, comprising a pretreatment unit, a coating device and a detection unit; the coating device comprises a coating chamber, a plasma source and a target material module, a rotating clamp, a sub-clamp, a driving mechanism and a control system; further comprising a sealing cover, which is distributed on the upper and lower parts of the rotating clamp; the clamping jaw drives the plug to be inserted into the interface to be powered on, and the intelligent sensor detects the unopened watch parts after being powered on, detects the appearance state of the unopened workpiece, selects the watch shell with scratches, missing corners and unqualified cleaning in advance, and directly shunts to the rework link, so as to avoid these workpieces from entering the coating process, save the consumption of target material and coating time, ensure that the watch shells entering the coating are in a qualified state, improve the consistency of batch coating, and reduce the workload of subsequent detection.

Description

Technical Field

[0001] This invention belongs to the field of coating production technology, specifically the environmentally friendly ion plating process, coating structure and production system for watch parts. Background Technology

[0002] In the production of environmentally friendly ion plating for watch parts, the rotary fixture is a key component that carries the workpiece. The rotary fixture drives the workpiece to rotate around the sun and on its own axis to ensure uniformity of the film layer and avoid defects such as exposed plating and color difference. It meets the precision and appearance requirements of watch parts. In the existing technology, the rotation speed of the rotary fixture is mostly a fixed value or roughly adjusted based on experience. It is not dynamically controlled in combination with each stage of the coating, the type of workpiece and the requirements of the film layer, which leads to many quality and efficiency problems.

[0003] During the ion deposition stage, excessively high rotation speed can cause precision parts to loosen and the film layer to be too thin and lack density; excessively low rotation speed can cause the local film layer to be too thick, stress concentration, blackening of edges and corners, cracking, and excessive color difference, directly leading to the scrapping of the workpiece.

[0004] During the vacuum cooling stage, existing technologies often stop rotation or fix the speed at a low speed, which cannot achieve uniform heat dissipation and easily generate thermal stress, causing the film to peel off; if the rotation speed is too high, it will cause the fixture to vibrate, destroy the vacuum stability, and cause microcracks in the film.

[0005] In addition, watch parts have diverse specifications, and a fixed rotation speed cannot be adapted to different workpieces, resulting in uneven film thickness and color difference in products from the same furnace, a low pass rate, and indirectly affecting the plasma flow field and target material utilization, increasing production costs and rework rate. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes an environmentally friendly ion plating process, plating structure, and production system for watch parts.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: This invention proposes an environmentally friendly ion plating process, plating structure, and production system for watch parts. The environmentally friendly ion plating production system for watch parts includes a pretreatment unit, plating equipment, and a testing unit; the plating equipment includes a plating chamber, a plasma source and target module, a rotating fixture, a sub-fixture, a drive mechanism, and a control system; it also includes:

[0008] A sealing cover, wherein the sealing covers are distributed at two upper and lower positions of a rotary jig, the rotary jig is located in a sealed space formed by combining the sealing covers, a mounting frame is arranged at the center of the top of the rotary jig, the upper sealing cover is slidably connected to the mounting frame, a clamping groove and a clamping block are respectively arranged at openings of adjacent sealing covers, and the clamping block is slidably connected to the lower sealing cover; a spring rod is arranged at the top of the coating chamber, the bottom of the spring rod is connected to the upper sealing cover through bolts, a plurality of ventilation covers are hinged to the upper sealing cover through torsion springs, and a top block at the top of the coating chamber is in contact with the ventilation covers;

[0009] A storage box, wherein the storage box is mounted on a side wall of the coating chamber, a heat insulation plate is slidably connected to an opening of the storage box, a sealing adhesive strip is arranged between the heat insulation plate and the storage box, and the heat insulation plate is connected to a telescopic mechanism mounted on the storage box; a swinging mechanism is arranged in the storage box, an electric push rod is arranged at a swinging end of the swinging mechanism, and a clamping jaw is arranged at an end of the electric push rod; an intelligent sensor is mounted on the lower sealing cover, an interface is arranged on the sealing cover, the interface is connected to the intelligent sensor, and a plug matching the interface is arranged on the clamping jaw.

[0010] Preferably, an adjustment block is slidably connected to an inner wall of the sealing cover through a spring, the adjustment block is located in the lower sealing cover, a transmission ring is slidably connected to a side wall of the coating chamber, and a transmission block arranged at the top of the transmission ring is serrated; the sub-jig is rotatably connected to the rotary jig through a rotating shaft, one end of the rotating shaft is slidably connected with a transmission shaft through a spring, an outer periphery of the transmission shaft is serrated, the transmission shaft is mutually connected with the transmission ring, a locking block is slidably connected to the inside of the rotary jig through a spring, and the locking block is clamped at a serrated part of the transmission shaft; a rotating speed acquisition rod is hinged to the adjustment block through a torsion spring, the rotating speed acquisition rod is connected to a rotating speed sensor mounted in the sealing cover, and the rotating speed acquisition rod is in contact with an edge and a part near the center of the rotary jig; an air inlet and an air outlet are arranged in the storage box, and the air inlet and the air outlet are communicated with a circulating air pump matched with coating equipment.

[0011] Preferably, an extension block is arranged on one side of the transmission block, the extension blocks are arranged in a stepped manner, a first extension block is located obliquely below the top of the transmission block, a second extension block is located obliquely below the top of the first extension block, and the top of the extension block and the top of the transmission block have serrations of the same specification.

[0012] Preferably, arc-shaped buffer sheets are uniformly arranged on the transmission shaft, and the buffer sheets are uniformly distributed in serrations of the transmission shaft; blocking pipes are uniformly arranged on a side wall of the coating chamber, and the blocking pipes are in contact with an outer periphery of the transmission ring.

[0013] Preferably, air extraction holes are uniformly distributed on the blocking pipes, and the air extraction holes are communicated with the circulating air pump.

[0014] Preferably, a sealing ring is slidably connected to the bottom of the transmission ring through a spring, a heat insulation ring is arranged between adjacent sealing rings, and the sealing ring, the blocking pipes, the transmission ring and the sealing cover are combined to form a sealing partition in the middle of the coating chamber.

[0015] Preferably, a cleaning cloth is provided on the inner side of the heat insulation plate, the cleaning cloth contacts the inner wall of the storage box and the inner wall of the sealing cover below, and the cleaning cloth is close to the exhaust port.

[0016] Preferably, the storage box is equipped with an adsorption tube, which is connected to a circulating air pump and contacts a cleaning cloth.

[0017] An environmentally friendly ion plating process for watch parts, comprising the following steps:

[0018] S1: Select environmentally friendly substrates, remove surface oxide scale and burrs to ensure a smooth surface; install the substrates into multi-station rotary fixtures according to component type; select environmentally friendly target materials and install them according to coating requirements;

[0019] S2: Ultrasonic cleaning with deionized water for 15-20 minutes to remove oil and impurities, then transfer to the coating equipment;

[0020] S3: Close the coating chamber and evacuate the vacuum system; start the ionization system and pre-sputter the target for 3-5 minutes to remove the oxide layer; deposit the bonding layer, transition layer, and surface layer in that order; allow the film to cool naturally to room temperature under vacuum to avoid cracking.

[0021] S4: Inspect the film thickness, adhesion, and hardness; rework defective products; then wipe with a lint-free cloth and deionized water; finally, clean the inner wall, recover undeposited target material, and check for replenishment of target material.

[0022] An environmentally friendly ion plating structure for watch parts, wherein the plating layer is a multi-layer composite structure comprising a bonding layer, a transition layer and a surface layer in sequence;

[0023] Bonding layer: Cr base layer, bonding strength >100N;

[0024] Transition layer: CrN / AlCrN, hardness HV1200+;

[0025] Surface layer: decorative layer, color difference value <0.5.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. The environmentally friendly ion plating process, plating structure, and production system for watch parts described in this invention involve a clamp driving a plug to insert into an interface and energizing it. After the intelligent sensor is energized, it inspects the unopened watch parts, checking their appearance. For example, it pre-screens watch cases with scratches, missing corners, or unqualified cleaning, directly diverting them to the rework stage. This prevents these parts from entering the plating process, saving target material consumption and plating time. At the same time, it ensures that all watch cases entering the plating process are in a qualified state, improving the consistency of batch plating and reducing the workload of subsequent inspections.

[0028] 2. The environmentally friendly ion plating process, plating structure, and production system for watch parts described in this invention include: a high-definition camera to observe the dial and bezel surfaces and capture defects such as fingerprints, water stains, and minor scratches; and a gas detection sensor to accurately detect trace amounts of water vapor and grease gas inside the sealed cover, determining whether the cleanliness meets the requirements for high-end plating, identifying high-end parts that are not clean enough or have appearance defects in advance, preventing them from entering the plating process, reducing the scrap loss of high-end products, improving the plating yield, and thus improving the plating quality. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 It is a 3D diagram of the coating equipment;

[0031] Figure 2 This is a schematic diagram of the interior of the coating chamber;

[0032] Figure 3 This is a cross-sectional view of the coating chamber;

[0033] Figure 4 This is a schematic diagram of the coating chamber viewed from above;

[0034] Figure 5 This is a schematic diagram of the sealing cover being assembled;

[0035] Figure 6 This is a schematic diagram of the transmission shaft contacting the transmission block.

[0036] In the diagram: Coating chamber 1, Rotary clamp 11, Sub-clamp 12, Sealing cover 13, Mounting bracket 14, Slot 15, Clamping block 16, Spring rod 17, Vent cover 18, Top block 19, Storage box 2, Heat insulation plate 21, Telescopic mechanism 22, Swinging mechanism 23, Electric push rod 24, Gripper 25, Interface 26, Plug 27, Adjusting block 28, Transmission ring 29, Transmission block 3, Transmission shaft 31, Locking block 32, Speed ​​acquisition rod 33, Air inlet 34, Air outlet 35, Extension block 36, Buffer plate 37, Baffle tube 38, Air extraction hole 39, Sealing ring 4, Heat insulation ring 41, Cleaning cloth 42, Adsorption tube 43. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] To effectively solve the above problems, see the attached diagram in the instruction manual. Figure 1-6 As shown, the environmentally friendly ion plating production system for watch parts includes a pretreatment unit, a plating equipment, and a testing unit. The plating equipment includes a plating chamber 1, a plasma source and target module, a rotating fixture 11, a sub-fixture 12, a drive mechanism, and a control system. The plasma source and target module are conventional plating raw materials. The rotating fixture 11 and the sub-fixture 12 are conventional combination devices. The sub-fixture 12 is rotatably connected to the rotating fixture 11. The watch parts are mounted on the sub-fixture 12, and the sub-fixture 12 is mounted on the rotating fixture 11. The rotating fixture 11 is fixed to the drive structure inside the plating chamber 1 by a mounting bracket 14. The drive mechanism drives the sub-fixture 12 and the watch parts to revolve around the central axis through the rotating fixture 11. The sub-fixture 12 drives the watch parts to rotate on their own axis, thus completing the work requirements of the watch parts' revolution and rotation.

[0040] Also includes:

[0041] A sealing cover 13 is distributed at the top and bottom of a rotating clamp 11. The rotating clamp 11 is located in the sealed space formed by the combined sealing covers 13. A mounting bracket 14 is provided at the top center of the rotating clamp 11. The upper sealing cover 13 is slidably connected to the mounting bracket 14. Each of the openings of adjacent sealing covers 13 is provided with a slot 15 and a block 16. The block 16 is slidably connected to the lower sealing cover 13. A spring rod 17 is provided at the top of the coating chamber 1. The bottom of the spring rod 17 is connected to the upper sealing cover 13 by bolts. Multiple vent covers 18 are hinged to the upper sealing cover 13 by torsion springs. A top block 19 is provided at the top of the coating chamber 1 to contact the vent covers 18.

[0042] Storage box 2 is installed on the side wall of coating chamber 1. A heat insulation plate 21 is slidably connected to the opening of storage box 2. A sealing strip is provided between the heat insulation plate 21 and storage box 2. The heat insulation plate 21 is connected to the telescopic mechanism 22 installed on storage box 2. A swing mechanism 23 is provided inside storage box 2. An electric push rod 24 is provided at the swing end of the swing mechanism 23. A gripper 25 is provided at the end of the electric push rod 24. A smart sensor is installed on the sealing cover 13 below. An interface 26 is provided on the sealing cover 13. The interface 26 is connected to the smart sensor. A plug 27 matching the interface 26 is provided on the gripper 25.

[0043] During the coating process, the upper sealing cover 13 is positioned above and at a considerable distance from the watch part. Through the vent cover 18, it becomes a mesh structure. During coating, the sealing cover 13 is completely detached from the workpiece area, and the mesh structure does not obstruct the plasma flow field. The gripper 25 picks up and slightly rotates the lower sealing cover 13 to achieve the clamping purpose. The intelligent sensors include a temperature and humidity sensor, a water-cooled high-temperature resistant camera, a vacuum detection sensor, and a gas detection sensor, used to detect the ambient temperature, humidity, gas type, vacuum level, and film layer detection during the watch part coating process. All sensors used are high-temperature resistant. Furthermore, the interface 26 on the sealing cover 13 and the plug 27 on the gripper 25 are also made of high-temperature resistant materials; the telescopic mechanism 22 and the swing mechanism 23 are conventional electrical devices, such as electric telescopic devices and swing motors; when the lower sealing cover 13 separates and swings into the storage box, it passes through the recess on the transmission ring 29 in an inclined state, realizing the action of the lower sealing cover 13 passing through the transmission ring 29; when the sealing cover 13 needs to pass through the transmission ring 29, the sealing cover 13 drives the transmission ring 29 to descend, and the transmission ring 29 stops descending after descending to the top of the storage box 2, and the gripper 25 drives the sealing cover 13 to tilt and pass through the transmission ring 29;

[0044] Specific workflow: After the watch parts are cleaned, the two sealing covers 13 are merged to seal the rotating clamp 11, the sub-clamp 12 and the watch parts inside. The bottoms of the sealing covers 13 are in contact with each other and merged, and the tops are in contact with the mounting bracket 14 and sealed. The two sealing covers 13 are inserted into the slot 15 by the clip 16 to fix them into a whole. The sealing covers 13 restrict the rotation of the sub-clamp 12 to prevent the sub-clamp 12 from causing the watch parts to rotate after the rotating clamp 11 is fixed. This improves the stability of the watch parts during the transfer and installation process. At the same time, the isolation of the sealing covers 13 improves the cleanliness and prevents impurities from affecting the coating quality.

[0045] Workers move watch parts through the sealing cover 13 and fix the mounting bracket 14 to the drive mechanism with conventional bolts. Then, they extend and store the telescopic spring rod 17. After one end of the spring rod 17 is fixed to the upper sealing cover 13 with bolts, the coating chamber 1 door is closed. Workers control the telescopic mechanism 22 to start, which moves the heat insulation plate 21 to open the storage box 2. The swing mechanism 23 drives the gripper 25 to swing out of the storage box 2 via the electric push rod 24. After the gripper 25 swings close to the lower sealing cover 13, the electric push rod 24 is activated, which drives the gripper 25 to contact the lower sealing cover 13 and the locking block 16. The gripper 25 clamps... During the process, the latch 16 is moved horizontally, and the latch 16 moves out of the slot 15 to release the fixation of the two sealing covers 13. The upper sealing cover 13 is driven by the spring rod 17 to rise away from the watch parts. The upper sealing cover 13 drives the vent cover 18 to contact the top block 19. The top block 19 drives the vent cover 18 to flip open, so that the upper sealing cover 13 becomes a mesh structure in the coating area of ​​the watch parts. The lower sealing cover 13 is held by the claw 25 and driven by the swing mechanism 23 and the electric push rod 24, swinging into the storage box 2. The heat insulation plate 21 is closed to block the heat during the coating process from affecting the smart sensor. At this time, the preparation work for coating can begin.

[0046] Before coating, the worker can control the gripper 25 to contact the bottom of the sealing cover 13. The gripper 25 drives the plug 27 to be inserted into the interface 26 to be powered on. After the smart sensor is powered on, it will inspect the unopened watch parts and check the appearance of the unopened workpieces. For example, watch cases with scratches, missing corners, or unqualified cleaning will be screened in advance and directly diverted to the rework stage to avoid these workpieces from entering the coating process, saving target material consumption and coating time. At the same time, it ensures that all watch cases entering the coating are qualified, improves the consistency of batch coating, and reduces the workload of subsequent inspection.

[0047] After pretreatment cleaning, some watch case surfaces may have residual traces of oil, minor scratches, or casting defects. If coating is applied directly, it will lead to uneven film adhesion, prominent scratches, and even exposure of the substrate or color difference, resulting in a high batch scrap rate. After the sensor is powered on, the camera magnifies and observes the posture and surface condition of the hands and hour markers. The vacuum degree detection sensor confirms that there are no excess impurities or gases inside the sealed cover 13 and whether there is any leakage or contamination by external air dust, thus judging the cleanliness. The temperature and humidity sensor monitors the temperature inside the sealed cover 13 to keep the watch parts coated at the same temperature, improving the adhesion of the film to the watch parts and thus improving the coating quality.

[0048] When misaligned, dusty, or slightly deformed hands or pins are detected in advance, workers can unlock the sealing cover 13 to fine-tune the workpiece's posture, clean it again, or scrap it directly to avoid being unable to assemble it after coating due to these problems.

[0049] In addition, watch hands and numerals have small dimensions and light mass. After pretreatment, fine dust may remain or slight deformation may occur, and slight displacement may happen during sealed transfer. If coating is performed directly, it will cause uneven film thickness, uncoated areas at the needle tip, and aggravated deformation, which cannot meet the assembly accuracy requirements of watches. Therefore, cameras conduct high-definition observation on the surfaces of dials and bezels to capture defects such as fingerprints, water stains and fine scratches; gas detection sensors accurately detect trace water vapor and grease gas in the sealing cover 13 to determine whether the cleanliness meets the requirements for high-end coating, screen out high-end parts with unqualified cleaning and appearance defects in advance, prevent such parts from entering the coating process, reduce scrap loss of high-end products, improve the coating yield, and thus improve the coating quality;

[0050] Moreover, when transferring after coating is completed, workers unlock the spring rod 17 and the upper sealing cover 13, the upper sealing cover 13 descends along the mounting frame 14 to a position close to the rotating fixture 11, the clamping jaw 25 swings the lower sealing cover 13 back to the position below the rotating fixture 11 and then releases it, workers slide the clamping block 16 into the clamping groove 15 again to re-fix the two sealing covers 13, and the sealing covers 13 enclose and protect the coated watch parts, which prevents watch parts from being damaged due to collision and other conditions when workers disassemble them, thereby improving the protection of the coating production system for watch parts and further improving the coating quality;

[0051] In addition, during cooling after coating, the clamping jaw 25 drives the lower sealing cover 13 to swing close to the watch parts, the rotating fixture 11 and the sub-fixtures 12 drive the watch parts to revolve and rotate past the intelligent sensor, and the intelligent sensor circularly scans each watch part to monitor its temperature change, heat dissipation speed and other parameters, so as to avoid abnormal heat dissipation and other conditions; even if abnormal cooling occurs, workers can find it in time and take remedial measures and adjustments.

[0052] Embodiment 2:

[0053] Based on Embodiment 1, the inner wall of the sealing cover 13 is slidably connected with an adjustment block 28 through a spring, the adjustment block 28 is located in the lower sealing cover 13, a transmission ring 29 is slidably connected to the side wall of the coating chamber 1, and the transmission block 30 arranged at the top of the transmission ring 29 is serrated; the sub-fixture 12 is rotationally connected with the rotating fixture 11 through a rotating shaft, one end of the rotating shaft is slidably connected with a transmission shaft 31 through a spring, the outer periphery of the transmission shaft 31 is serrated, the transmission shaft 31 is mutually connected with the transmission ring 29, a locking block 32 is slidably connected in the rotating fixture 11 through a spring, and the locking block 32 is clamped at the serrated part of the transmission shaft 31; a rotational speed collection rod 33 is hinged on the adjustment block 28 through a torsion spring, the rotational speed collection rod 33 is connected to a rotational speed sensor installed in the sealing cover 13, and the rotational speed collection rod 33 is in contact with the edge and the position close to the center of the rotating fixture 11; an air inlet 34 and an air outlet 35 are arranged in the storage box 2, and the air inlet 34 and the air outlet 35 are communicated with a circulating air pump matched with coating equipment.

[0054] The transmission block 3 has an extension block 36 on one side, and the extension blocks 36 are arranged in a stepped manner. The first extension block 36 is located diagonally below the top of the transmission block 3, and the second extension block 36 is located diagonally below the top of the first extension block 36. The top of the extension block 36 and the top of the transmission block 3 have the same serrations.

[0055] The drive shaft 31 is uniformly provided with arc-shaped buffer plates 37, and the buffer plates 37 are evenly distributed in the serrations of the drive shaft 31; the side wall of the coating chamber 1 is uniformly provided with baffle tubes 38, and the baffle tubes 38 contact the outer periphery of the drive ring 29.

[0056] The baffle 38 has uniformly distributed air extraction holes 39, and the air extraction holes 39 are connected to the circulating air pump.

[0057] Specific workflow: When the sealing cover 13 is closed, the adjusting block 28 is squeezed into the interior of the lower sealing cover 13 by the rotating clamp 11. At the same time, the adjusting block 28 squeezes the edges of the rotating clamp 11 and the sub-clamp 12, so that they are fixed inside the sealing cover 13, which improves the stability during transportation and installation, and avoids the watch parts from shifting due to violent shaking, thereby improving the coating effect of the watch parts.

[0058] After the sealing cover 13 is separated, the adjusting block 28 extends away from the rotating clamp 11. When the sealing cover 13 swings into the storage box 2, it is in an inclined state. The adjusting block 28 is away from the transmission ring 29 and the two do not contact each other. During the coating cooling stage, the ambient temperature in the coating chamber 1 drops to the sensor's working temperature. The heat insulation plate 21 is opened, and the clamp 25 drives the lower sealing cover 13 to swing out and rise in a horizontal state. The lower sealing cover 13 drives the adjusting block 28 to contact the transmission ring 29. The adjusting block 28 drives the transmission ring 29 to rise until the serrated part of the transmission block 3 at the top of the transmission ring 29 contacts the serrated part on the transmission shaft 31 and they mesh with each other.

[0059] The rotating clamp 11 drives the drive shaft 31 to rotate via the sub-clamp 12. With the drive ring 29 not rotating, the drive shaft 31 rolls along the slightly serrated portion at the top of the drive ring 29 and pushes open the locking block 32, causing the drive shaft 31 to drive the sub-clamp 12 to rotate via the rotating shaft. After rotating a certain angle, for example, 10 degrees, the drive shaft 31 passes the serrated portion of the drive block 3, and the drive shaft 31 has no power to continue rotating. The locking block 32, influenced by the spring, extends and locks onto the serrated portion of the drive shaft 31, fixing the drive shaft 31 and thus fixing the watch part in the position after rotating 10 degrees. Each time the drive shaft 31 passes the serrated portion of the drive ring 29, the watch part rotates a certain angle. After multiple passes, the watch part can rotate one revolution. In this way, the watch part's original one-time rotation is changed to multiple rotations to complete one revolution, reducing the rotation speed of the watch part and preventing the newly applied plating layer from being shaken, which could lead to uneven plating thickness.

[0060] Furthermore, the parts rotate only a small angle each time, pausing briefly before rotating again, giving the camera ample time to focus and capture images, preventing blurring or missed shots due to rapid rotation. This allows for a complete scan of all surfaces of the parts, achieving truly thorough inspection without blind spots, detecting even minor scratches, dirt, or film abnormalities. The slow, paused rotation of the parts also enables the temperature sensor to more accurately capture the cooling rate of each surface. Areas with oil stains, impurities, or dark cracks exhibit noticeably different heat dissipation, making it easier for the sensor to compare and highlight these differences.

[0061] Moreover, the uniform slow rotation and step-by-step rotation result in more even heating and smoother cooling of the parts. It avoids local wind resistance and local temperature differences caused by rapid rotation, reduces film stress, and makes the edges and corners of the case and the tips of the needles less prone to peeling and flaking. The step-by-step slow rotation also allows the plasma and temperature field to remain on each surface more fully, so that parts in the same furnace will not have some surfaces that are deep and some surfaces that are shallow.

[0062] In addition, the parts are fixed in position and their rotation is controllable. The data collected by the sensor each time corresponds to the correct position. If a problem occurs, it can be accurately located on which surface and at which angle, which facilitates subsequent inspection and defect finding.

[0063] Furthermore, after the sealing cover 13 is opened, the speed acquisition rod 33 is no longer squeezed by the rotating fixture 11, and the movement of the adjusting block 28 causes the speed acquisition rod 33 to swing. Under the influence of the torsion spring and the adjusting block 28, the speed acquisition rod 33 swings to multiple monitoring points near or in contact with the edge and center of the rotating fixture 11. Then, the speed sensor detects the speed of each part of the rotating fixture 11 from the center to the edge. The speed detection method can use non-contact detection, such as fiber optic speed sensor. If the speed difference between the inside and outside of the rotating fixture 11 is too large, the color of large and small parts will be different. Multi-point speed measurement can be adjusted in time to make the color of the parts in the whole furnace uniform and improve the coating quality. Moreover, the worker can detect the actual speed of each position through the speed sensor. The camera and temperature sensor can match the corresponding angle to achieve accurate detection of each surface and each point, without missing small defects, improving detection accuracy and thus improving coating quality.

[0064] When the sealing cover 13 is closed, the bottom inclined surface of the upper sealing cover 13 presses the adjusting block 28, squeezing the adjusting block 28 back. The adjusting block 28 moves back and drives the speed acquisition rod 33 to swing back and reset. The reset is completed before the speed acquisition rod 33 contacts the rotating clamp 11.

[0065] After the sealing cover 13 enters the storage box 2, the conventional circulating air pump equipped with the coating equipment circulates air into the storage box 2 through the air inlet 34 and the air outlet 35. On the one hand, it cleans the smart sensor inside the sealing cover 13 and reduces the impact of impurities on the smart sensor. On the other hand, it can also reduce the heat radiation to the smart sensor when the coating is at high temperature. By cooling the air, the durability of the smart sensor's detection work is improved.

[0066] When controlling the rotation of the sub-clamp 12, if the sub-clamp 12 needs to rotate 15 degrees each time, the jaw 25 drives the transmission ring 29 to rise through the adjusting block 28. The top of the transmission block 3 is squeezed by the side wall of the coating chamber 1 and falls down, reducing the distance between the transmission block 3 and the transmission ring 29. The transmission block 3 falls down until its top is flush with the top of the first extension block 36, and the serrated parts of the two are connected, increasing the rolling distance of the transmission shaft 31, thereby increasing the rotation angle of the watch parts driven by the sub-clamp 12. If a greater rotation angle is required, the transmission block 3 is squeezed down further, and the tops of the transmission block 3 and the first extension block 36 fall down until they are flush with the top of the second extension block 36, further increasing the rolling distance of the transmission shaft 31. Large parts such as watch cases, buckles, and straps need to rotate a larger angle each time to improve the cooling detection effect. Very small parts such as hands and markers must rotate a very small angle each time to prevent damage to the coating. Adjustable angles can improve the applicability, eliminate the need for frequent replacement of parts, and improve coating efficiency.

[0067] By arranging a buffer plate 37 at the sawtooth part of the drive shaft 31, the buffer plate 37 can be made of elastic metal material. When the drive shaft 31 contacts the drive block 3 and the locking block 32, the buffer plate 37 can buffer the vibration generated by the rigid contact, so that the angle can be smoothly adjusted, and there will be no sudden start and stop or hard stop, thus avoiding the coating being affected and improving the coating quality.

[0068] By setting up the baffle 38, the baffle 38 guides and restricts the transmission ring 29 to move straight up and down, preventing it from rotating. Furthermore, if a change in the vacuum level inside the coating chamber 1 is detected, the operator controls the circulating air pump to uniformly extract air from the upper, middle, and lower parts of the coating chamber 1 through the air extraction hole 39 to restore the required vacuum parameters and improve the stability of the coating environment. Moreover, the air extraction hole 39 on the baffle 38 is close to the transmission block 3, and when the air extraction hole 39 extracts air, it can remove any impurities that may be generated on the transmission block 3, improving the cleanliness of each component and ensuring the cleanliness of the coating environment.

[0069] Example 3:

[0070] Based on Embodiment 2, the bottom of the transmission ring 29 is slidably connected to a sealing ring 4 by a spring, and a heat insulation ring 41 is provided between adjacent sealing rings 4. The sealing ring 4, the baffle tube 38, the transmission ring 29, and the sealing cover 13 are combined in the middle of the coating chamber 1 to form a sealed partition. The sealing ring 4 is a conventional high-temperature resistant sealing tool. When the lower sealing cover 13 separates and swings into the storage box, it passes through the recess on the transmission ring 29 in an inclined state. At this time, the transmission ring 29 is away from the baffle tube 38, and the sealing ring 4 and the heat insulation ring 41 are away from the recess on the transmission ring 29, realizing the action of the lower sealing cover 13 passing through the transmission ring 29. When the sealing cover 13 needs to pass through the transmission ring 29, the sealing cover 13 drives the transmission ring 29 to descend. The transmission ring 29 stops descending after it reaches the top of the storage box 2. The transmission ring 29 is away from the baffle tube 38, and the sealing ring 4 and the heat insulation ring 41 are away from the recess on the transmission ring 29. The gripper 25 then drives the sealing cover 13 to tilt and pass through the transmission ring 29.

[0071] The heat insulation plate 21 is provided with a cleaning cloth 42 on the inner side. The cleaning cloth 42 contacts the inner wall of the storage box 2 and the inner wall of the sealing cover 13 below, and the cleaning cloth 42 is close to the exhaust port 35.

[0072] The storage box 2 is equipped with an adsorption tube 43, which contacts the cleaning cloth 42.

[0073] Specific workflow: When the sealing cover 13 rises, it drives the transmission ring 29 to make horizontal contact with each other. The transmission ring 29 drives the sealing ring 4 and the heat insulation ring 41 to rise. The heat insulation ring 41 is guided by the inclined surface at the bottom of the baffle tube 38. The heat insulation ring 41 drives the sealing ring 4 to move towards the center of the transmission ring 29. The sealing ring 4 blocks the recess on the transmission ring 29, so that the sealing ring 4, the baffle tube 38, the transmission ring 29 and the sealing cover 13 are combined in the middle of the coating chamber 1 to form a sealed partition, reducing the space for cooling the watch parts during coating. Compared with the larger coating chamber 1, the reduced space of the coating chamber 1 makes it easier to control the temperature, thereby improving the cooling effect of the watch parts and thus improving the coating quality.

[0074] By setting the cleaning cloth 42, when the heat insulation plate 21 is opened and closed, the cleaning cloth 42 will be driven to pass through the sealing cover 13 below. The cleaning cloth 42 wipes and cleans the smart sensor inside the sealing cover 13, improving the cleanliness of the smart sensor probe, thereby improving the detection accuracy and thus improving the coating quality control accuracy. In addition, since the exhaust port 35 is close to the cleaning cloth 42, the impurities cleaned by the cleaning cloth 42 can be drawn away by the exhaust port 35 in time, improving the cleanliness.

[0075] By setting up an adsorption tube 43, which is connected to a circulating air pump, each time the cleaning cloth 42 passes through the adsorption tube 43, the adsorption tube 43 draws air into the cleaning cloth 42 through the circulating air pump. Combined with the scraping action of the adsorption tube 43, impurities on the cleaning cloth 42 are scraped away, further improving the cleanliness of the cleaning cloth 42, improving the cleaning effect on the smart sensor, thereby improving the detection accuracy of the smart sensor, and further improving the control effect of cooling the watch parts and improving the coating quality.

[0076] Example 4:

[0077] Based on Example 3, an environmentally friendly ion plating process for watch parts is described, wherein the plating process steps include:

[0078] S1: Select environmentally friendly substrates, remove surface oxide scale and burrs to ensure a smooth surface; install the substrates into multi-station rotary fixtures according to component type; select environmentally friendly target materials and install them according to coating requirements;

[0079] S2: Ultrasonic cleaning with deionized water for 15-20 minutes to remove oil and impurities, then transfer to the coating equipment;

[0080] S3: Close coating chamber 1 and evacuate the vacuum; start the ionization system, pre-sputter the target for 3-5 minutes to remove the oxide layer; deposit the bonding layer, transition layer, and surface layer in that order; allow the film to cool naturally to room temperature under vacuum to avoid cracking.

[0081] S4: Inspect the film thickness, adhesion, and hardness; rework defective products; then wipe with a lint-free cloth and deionized water; finally, clean the inner wall, recover undeposited target material, and check for replenishment of target material.

[0082] Example 5:

[0083] An environmentally friendly ion plating structure for watch parts, wherein the plating layer is a multi-layer composite structure comprising a bonding layer, a transition layer and a surface layer in sequence;

[0084] Bonding layer: Cr base layer, bonding strength >100N;

[0085] Transition layer: CrN / AlCrN, hardness HV1200+;

[0086] Surface layer: decorative layer, color difference value <0.5.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly ion plating production system for watch parts, comprising a pretreatment unit, a plating device and a detection unit; the plating device comprises a plating chamber (1), a plasma source and target material module, a rotating clamp (11), a sub-clamp (12), a driving mechanism and a control system; characterized in that, Also includes: A sealing cover (13) is distributed at the top and bottom of the rotating clamp (11). A mounting bracket (14) is provided at the center of the top of the rotating clamp (11). Each of the openings of adjacent sealing covers (13) is provided with a slot (15) and a block (16). The block (16) is slidably connected to the sealing cover (13) below. A spring rod (17) is provided at the top of the coating chamber (1). The bottom of the spring rod (17) is connected to the sealing cover (13) above by bolts. Multiple vent covers (18) are hinged on the sealing cover (13) above by torsion springs. A top block (19) is provided at the top of the coating chamber (1) to contact the vent covers (18). Storage box (2), the storage box (2) is installed on the side wall of the coating chamber (1), the opening of the storage box (2) is slidably connected to the heat insulation plate (21), the heat insulation plate (21) is connected to the telescopic mechanism (22) installed on the storage box (2); the storage box (2) is provided with a swing mechanism (23), the swing end of the swing mechanism (23) is provided with an electric push rod (24), the end of the electric push rod (24) is provided with a gripper (25); the sealing cover (13) below is equipped with a smart sensor, the sealing cover (13) is provided with an interface (26), and the gripper (25) is provided with a plug (27).

2. The environmentally friendly ion plating production system for watch parts according to claim 1, characterized in that: The inner wall of the sealing cover (13) is slidably connected to an adjusting block (28) via a spring. The adjusting block (28) is located inside the lower sealing cover (13). A transmission ring (29) is slidably connected to the side wall of the coating chamber (1). The transmission block (3) at the top of the transmission ring (29) is serrated. The sub-clamp (12) and the rotating clamp (11) are rotatably connected via a rotating shaft. One end of the rotating shaft is slidably connected to a transmission shaft (31) via a spring. The outer circumference of the transmission shaft (31) is serrated. The transmission shaft (31) and the transmission ring (29) are interconnected. The rotating clamp (11) A locking block (32) is slidably connected to the inside by a spring, and the locking block (32) is locked in the sawtooth part of the transmission shaft (31); a speed acquisition rod (33) is hinged to the adjustment block (28) by a torsion spring, and the speed acquisition rod (33) is connected to the speed sensor installed in the sealing cover (13), and the speed acquisition rod (33) contacts the edge and near the center of the rotating clamp (11); the storage box (2) is provided with an air inlet (34) and an air outlet (35), and the air inlet (34) and the air outlet (35) are connected to the circulating air pump matched with the coating equipment.

3. The environmentally friendly ion plating production system for watch parts according to claim 2, characterized in that: The transmission block (3) has an extension block (36) on one side, and the extension blocks (36) are arranged in a stepped manner. The first extension block (36) is located diagonally below the top of the transmission block (3), and the second extension block (36) is located diagonally below the top of the first extension block (36). The top of the extension block (36) and the top of the transmission block (3) have the same serrations.

4. The environmentally friendly ion plating production system for watch parts according to claim 3, characterized in that: The drive shaft (31) is uniformly provided with arc-shaped buffer plates (37), and the buffer plates (37) are evenly distributed in the sawtooth of the drive shaft (31); the side wall of the coating chamber (1) is uniformly provided with baffles (38), and the baffles (38) contact the outer periphery of the drive ring (29).

5. The environmentally friendly ion plating production system for watch parts according to claim 4, characterized in that: The baffle (38) has uniformly distributed air extraction holes (39), and the air extraction holes (39) are connected to the circulating air pump.

6. The environmentally friendly ion plating production system for watch parts according to claim 5, characterized in that: The bottom of the transmission ring (29) is slidably connected to a sealing ring (4) by a spring, and a heat insulation ring (41) is provided between adjacent sealing rings (4). The sealing ring (4), the baffle (38), the transmission ring (29) and the sealing cover (13) are combined in the middle of the coating chamber (1) to form a sealed partition.

7. The environmentally friendly ion plating production system for watch parts according to claim 6, characterized in that: The heat insulation plate (21) is provided with a cleaning cloth (42) on the inner side. The cleaning cloth (42) contacts the inner wall of the storage box (2) and the inner wall of the sealing cover (13) below, and the cleaning cloth (42) is close to the exhaust port (35).

8. The environmentally friendly ion plating production system for watch parts according to claim 7, characterized in that: The storage box (2) is equipped with an adsorption tube (43), which is connected to a circulating air pump and contacts a cleaning cloth (42).

9. An environmentally friendly ion plating process for watch parts, wherein the plating process uses the production system described in any one of claims 1-8, characterized in that: The coating process steps include: S1: Select environmentally friendly substrate, remove surface oxide scale and burrs to ensure a smooth surface; load the substrate into a multi-station rotary fixture (11) according to the type of parts; select environmentally friendly target material and install it according to the coating requirements; S2: Ultrasonic cleaning with deionized water for 15-20 minutes to remove oil and impurities, then transfer to the coating equipment; S3: Close the coating chamber (1) and evacuate the vacuum; start the ionization system, pre-sputter the target for 3-5 minutes to remove the oxide layer; deposit the coating in the order of bonding layer, transition layer and surface layer; allow the coating to cool naturally to room temperature under vacuum to avoid cracking. S4: Inspect the film thickness, adhesion, and hardness; rework defective products; then wipe with a lint-free cloth and deionized water; finally, clean the inner wall, recover undeposited target material, and check for replenishment of target material.

10. An environmentally friendly ion-plating structure for watch components, wherein the ion-plating structure is obtained by the ion plating process described in claim 9, characterized in that: The coating is a multi-layer composite structure comprising a bonding layer, a transition layer, and a surface layer in sequence. Bonding layer: Cr base layer, bonding strength >100N; Transition layer: CrN / AlCrN, hardness HV1200 or higher; Surface layer: decorative layer, color difference value <0.5.

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