Crystal film coating system
By introducing an adjustable high-pressure roller assembly into the crystal coating system, the problem of uncontrollable pre-pressure of the pressing roller was solved, and precise control of the pre-pressure of the pressing roller was achieved, improving the bonding quality and stability of the transfer film and release paper.
Patent Information
- Application Number
- CN202411472625.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-12-26
AI Technical Summary
In existing crystal lamination systems, it is difficult to precisely control the bonding quality between the transfer film and the release paper by the pressure roller, mainly due to the uncontrollable compression of the pre-compression spring.
An adjustable high-pressure pressing roller assembly, including a height adjustment mechanism and a pre-pressure spring, is adopted. The pre-pressure adjustment screw and the operating handle are coordinated to achieve the desired effect. A new cam and operating method are achieved by controlling the cam and the operating mechanism. The adjustable high-pressure pressing roller assembly, including a height adjustment mechanism and a pre-pressure spring, precisely controls the pre-pressure of the pressing roller through the coordination of the adjustment screw and the operating handle.
Precise control of the pre-pressure of the pressing roller was achieved, improving the bonding quality and stability of the transfer film and release paper.
Smart Images
Figure CN121200564A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of crystal label printer accessories, and in particular to a crystal coating system. Background Technology
[0002] Crystal labels are a decorative process where layers of adhesive, white ink, and varnish are layered onto release paper to print various patterns. A transfer film is then applied to the release paper to protect the pattern, and the transfer film is used to transfer the pattern onto the surface of the item. Generally, to ensure the release paper surface is clean, a protective film is first applied; this protective film is peeled off from the top of the release paper when layering the white ink and varnish. The crystal lamination system is a functional component on the crystal label printer that tightly adheres the transfer film to the release paper. Existing crystal lamination systems, to increase the bonding strength between the transfer film and the release paper, have a pressure roller above the drive roller. The pressure roller presses against the drive roller, sandwiching the release paper and transfer film in between. This pressure roller has a heating element to facilitate the bonding of the transfer film and release paper, forming the crystal label. The pressure roller also outputs torque to transport the bonded transfer film and release paper downwards. Therefore, a gap needs to be left between the pressing roller and the power roller for the transfer film and release paper to pass through; and a pre-compression spring is installed above the pressing roller to keep the pressing roller in close contact with the transfer film at all times; in the existing technology, the compression amount of the pre-compression spring is uncontrollable, so the pre-pressure applied to the pressing roller is uncontrollable, and the bonding quality of the transfer film and release paper cannot be better controlled. Summary of the Invention
[0003] The purpose of this invention is to solve the above-mentioned problems and provide a crystal coating system.
[0004] The technical solution of this invention is as follows: A crystal coating system includes two side plates, an adjustable high-pressure roller assembly, a power roller, and a feed roller; the adjustable high-pressure roller assembly includes a pressing roller and two height adjustment mechanisms; the height adjustment mechanisms are used to adjust the height of the end of the pressing roller so that the pressing roller is at a suitable height, leaving sufficient gap between it and the power roller to ensure the smooth passage of the crystal label, and ensuring that the pressing roller has sufficient pre-pressure on the crystal label; the height adjustment mechanism includes a support frame, a height adjustment plate, an operating handle, a cam, a pre-pressure spring, and an adjusting screw; the side plates and the height adjustment mechanisms are symmetrically arranged on both sides; the power roller, pressing roller, and feed roller are all arranged laterally between the two side plates; the pressing roller is located directly above the power roller and cooperates with the power roller to enhance the bonding between the transfer film and the release paper, and to ensure the smooth flow of the crystal label; the ends of the power roller and the feed roller are rotatably connected to the side plates; the end of the pressing roller is rotatably connected to the support frame; the support frame is vertically slidingly engaged with the side plates to provide guidance for the height adjustment of the pressing roller; the feed roller is located in front of the pressing roller. This system provides a transfer film for the crystal coating system; a support frame extends outward to form a horizontal plate; an adjusting screw vertically penetrates the horizontal plate and is threadedly connected to the top of the height adjustment plate, forming an integral unit with it; a pre-compression spring is fitted in the middle of the adjusting screw; the upper end of the pre-compression spring connects to the top of the adjusting screw; the lower end of the pre-compression spring connects to the horizontal plate; the adjusting screw allows for initial adjustment of the pre-compression spring's compression, and further adjustment as the horizontal plate rises and falls, thus precisely controlling the pre-pressure of the pressing roller on the crystal target; the height adjustment plate has a height adjustment hole in the middle that mates with the side of the cam; the end of the operating handle is rotatably connected to the side plate, and the middle is fixed to the cam; a gap corresponding to the cam is left between the bottom of the horizontal plate and the top of the height adjustment plate; this gap is less than the cam's lifting and lowering stroke on the height adjustment plate; the operating handle controls the rotation of the cam, and then controls the vertical lifting and lowering of the height adjustment plate through the cooperation of the cam and the height adjustment hole, providing power for further adjustment of the pre-pressure of the pressing roller on the crystal target; the height adjustment plate and the side plate slide vertically together, providing guidance for the vertical lifting and lowering of the height adjustment plate.
[0005] Preferably, the crystal coating system further includes a power mechanism; the power mechanism includes a drive motor, a drive pulley, a driven pulley, and a transmission belt; the output shaft of the drive motor is coaxially fixed to the drive pulley; the driven pulley is coaxially fixed to the power roller; the transmission belt connects the drive pulley and the driven pulley; the drive motor outputs torque to drive the drive pulley to rotate; the rotating drive pulley acts on the driven pulley through the transmission belt, causing the driven pulley to rotate; the rotating driven pulley drives the power roller to rotate, providing power to the power roller.
[0006] Furthermore, the crystal coating system also includes a base plate; the side plates and drive motors are all mounted on the base plate, and then the base plate is connected to the crystal label printer; the relative positions of the side plates and drive motors can achieve a certain level of precision.
[0007] Preferably, a clamp-type thermocouple is installed at the end of the pressing roller to control the heating component of the pressing roller in real time, so that the temperature on the pressing roller is kept in a balanced state. Real-time monitoring of the temperature on the pressing roller ensures that when the pressing roller acts on the transfer film and release paper, the pressing roller reaches the set temperature, resulting in a good bonding effect between the transfer film and the release paper. A temperature control switch is installed on the support frame near the end of the pressing roller to control the heating component of the pressing roller in real time, so that the temperature on the pressing roller is kept in a constant state, which is beneficial to the bonding stability of the transfer film and the release paper.
[0008] Preferably, the height adjustment mechanism further includes a vertical guide rail and a vertical slider that cooperate with each other; the vertical guide rail is mounted on the side plate; the vertical slider is mounted on the lifting frame; the vertical guide rail and the vertical slider cooperate with each other to provide guidance for the vertical lifting and lowering of the lifting frame.
[0009] Preferably, the height adjustment plate is also provided with vertical guide holes; there are two vertical guide holes, which are set on both sides of the height adjustment hole; the height adjustment mechanism also includes a guide shaft and a limit screw; one end of the guide shaft is connected to the side plate, and the other end passes through the vertical elongated hole and is fitted with a limit screw; the screw head of the limit screw is slidably engaged with the height adjustment plate; the vertical guide hole engages with the guide shaft to provide guidance for the vertical lifting and lowering of the height adjustment plate; the limit screw restricts the position of the guide shaft and the vertical guide hole to prevent the height adjustment plate from coming off the guide shaft.
[0010] Preferably, the height adjustment mechanism further includes a synchronous shaft; the end of the synchronous shaft is coaxially fixed to the end of the operating handle; the synchronous shaft ensures that the lifting frames at both ends of the pressing roller rise and fall synchronously, and synchronously adjusts the preload spring adjustment amount at both ends of the pressing roller.
[0011] Preferably, the cam includes a cylindrical wheel, a fastener, and a rolling bearing; the end face of the cylindrical wheel is provided with an eccentric through hole; the middle part of the operating handle passes through the eccentric through hole, ensuring that the operating handle drives the cylindrical wheel to rotate, thus achieving the cam effect; the cylindrical wheel is connected to the middle part of the operating handle through the fastener, ensuring the fixed connection between the cylindrical wheel and the operating handle; the rolling bearing is fitted outside the cylindrical wheel to reduce the rotational resistance of the cylindrical wheel.
[0012] Furthermore, a keyway is provided in the middle of the operating handle; the end of the fastener abuts against the bottom of the keyway, improving the connection strength between the cylindrical wheel and the operating handle.
[0013] Furthermore, a circular limiting blind hole is provided at the bottom of the keyway; the end of the fastener is inserted into the limiting blind hole to improve the connection effect between the cylindrical wheel and the operating handle.
[0014] Preferably, the adjustable high-pressure pressing roller assembly also includes a protective housing; the protective housing covers the end of the pressing roller and protects the height adjustment mechanism.
[0015] The beneficial effects of the present invention are as follows: The crystal coating system of the present invention has the following advantages: (1) The present invention has a simple structure and is easy to operate. The vertical lifting and lowering of the height adjustment plate is caused by controlling the cam. When the height adjustment plate rises vertically, the end of the height adjustment plate can push against the horizontal plate and lift the pressing roller vertically, which is convenient for placing the crystal label. When the height adjustment plate falls vertically, the pressing roller is first lowered and pressed on the crystal label, and then the pre-compression spring is compressed to adjust the pre-pressure of the pressing roller. The operating handle can control the pre-compression spring to reach the designed compression amount and make further adjustments so that the pre-pressure of the pressing roller can be precisely controlled to ensure the bonding quality of the transfer film and the release paper. (2) The vertical guide hole of the present invention cooperates with the guide shaft to provide guidance for the vertical lifting and lowering of the height adjustment plate; the limit screw restricts the position of the guide shaft and the vertical guide hole to prevent the height adjustment plate from coming off the guide shaft. Attached Figure Description
[0016] Figure 1 The three-dimensional crystal coating system of the present invention Figure 1 ; Figure 2 The three-dimensional crystal coating system of the present invention Figure 2 ; Figure 3 yes Figure 1 The main view; Figure 4 yes Figure 3 AA section view; Figure 5 yes Figure 4 BB cross-sectional view; Figure 6 yes Figure 5 A magnified view of the I-shaped image; Figure 7 yes Figure 4 CC section view; Figure 8 yes Figure 7 DD sectional view; Figure 9 This is a 3D view of the adjustable high-pressure roller assembly; In the diagram: 1. Side plate, 21. Pressing roller, 211. Clamp-type thermocouple, 22. Height adjustment mechanism, 221. Lifting frame, 2211. Horizontal plate, 2212. Temperature control switch, 222. Height adjustment plate, 2221. Height adjustment hole, 2222. Vertical guide hole, 223. Operating handle, 2231. Keyway, 22311. Limit blind hole, 224. Cam, 2241. Cylindrical wheel, 22411. Eccentric through hole, 2242. Fastening pin, 2243. Rolling bearing, 22 5. Preload spring; 226. Adjusting screw; 227. Clearance; 2281. Vertical guide rail; 2282. Vertical slider; 2291. Guide shaft; 22911. Cylindrical section; 22912. Square column section; 22913. Synchronous shaft; 2292. Limit screw; 231. Housing A; 2311. Arched hole; 232. Housing B; 3. Power roller; 4. Fabric feeding roller; 51. Drive motor; 52. Drive pulley; 53. Driven pulley; 54. Transmission belt; 6. Base plate. Detailed Implementation
[0017] Example 1: See Figure 1-9A crystal coating system includes two side plates 1, an adjustable high-pressure roller assembly, a power roller 3, and a fabric feeding roller 5. The adjustable high-pressure roller assembly includes a pressing roller 21 and two height adjustment mechanisms 22. The height adjustment mechanism 22 is used to adjust the height of the end of the pressing roller 21 so that the pressing roller 21 is at a suitable height, leaving a sufficient gap between it and the power roller 3 to ensure that the crystal label passes through smoothly, and ensuring that the pressing roller 21 has sufficient pre-pressure on the crystal label. The height adjustment mechanism 22 includes a lifting frame 221, a height adjustment plate 222, an operating handle 223, a cam 224, a pre-pressure spring 225, and an adjusting screw 226. The side plates 1 and the height adjustment mechanisms 22 are symmetrically arranged on both sides. On the side, the power roller 3, pressure roller 21, and feed roller 5 are all horizontally arranged between the two side plates 1; the pressure roller 21 is positioned directly above the power roller 3, cooperating with the power roller 3 to enhance the bonding between the transfer film and the release paper, and to ensure the smooth flow of the crystal label; the ends of the power roller 3 and the feed roller 5 are rotatably connected to the side plates 1; the end of the pressure roller 21 is rotatably connected to the support frame 221; the support frame 221 slides vertically with the side plates 1, providing guidance for the height adjustment of the pressure roller 21; the feed roller 5 is positioned in front of the pressure roller 21, providing transfer film for the crystal coating system; the support frame 221 extends outward to form a horizontal plate 221. 1. The adjusting screw 226 vertically penetrates the horizontal plate 2211 and is threadedly connected to the top of the height adjusting plate 222, forming an integral part with the height adjusting plate 222; the preload spring 225 is fitted in the middle of the adjusting screw 226; the upper end of the preload spring 225 is connected to the top of the adjusting screw 226; the lower end of the preload spring 225 is connected to the horizontal plate 2211; the setting of the adjusting screw 226 can directly and initially adjust the compression of the preload spring 225, and further adjust the compression of the preload spring 225 as the horizontal plate 2211 rises and falls, thereby accurately controlling the preload pressure of the pressing roller 21 on the crystal mark; the middle of the height adjusting plate 222 is provided with a cam 224 The height adjustment hole 2221 is fitted on the side; the end of the operating handle 223 is rotatably connected to the side plate 1, and the middle part is fixedly connected to the cam 224; the bottom of the horizontal plate 2211 and the top of the height adjustment plate 222 have a gap 227 corresponding to the cam 224; the size of the gap 227 is less than the lifting stroke of the cam 224 on the height adjustment plate 222; the operating handle 223 can control the rotation of the cam 224, and then control the vertical lifting of the height adjustment plate 222 through the cooperation of the cam 224 and the height adjustment hole 2221, providing power for further adjustment of the pre-pressure of the pressing roller 21 on the crystal mark; the height adjustment plate 222 is vertically slidably fitted with the side plate 1, providing guidance for the vertical lifting of the height adjustment plate 222.
[0018] Compared with existing technologies, this invention has a simple structure and is easy to operate. The vertical raising and lowering of the height adjustment plate 222 is caused by controlling the cam 224. When the height adjustment plate 222 rises vertically, its end can press against the horizontal plate 2211, vertically lifting the pressure roller 21 for easy placement of the crystal label. When the height adjustment plate 222 descends vertically, the pressure roller 21 is first lowered and pressed onto the crystal label, then the pre-compression spring 225 is compressed to adjust the pre-pressure of the pressure roller 21. The operating handle 223 can control the pre-compression spring 225 to reach the designed compression amount, allowing for further adjustment to precisely control the pre-pressure of the pressure roller 21 and ensure the bonding quality between the transfer film and the release paper.
[0019] The crystal coating system also includes a power mechanism; this power mechanism includes a drive motor 51, a drive pulley 52, a driven pulley 53, and a transmission belt 54; the output shaft of the drive motor 51 is coaxially fixed to the drive pulley 52; the driven pulley 53 is coaxially fixed to the power roller 3; the transmission belt 54 connects the drive pulley 52 and the driven pulley 53; the drive motor 51 outputs torque to drive the drive pulley 52 to rotate; the rotating drive pulley 52 acts on the driven pulley 53 through the transmission belt 54, causing the driven pulley 53 to rotate; the rotating driven pulley 53 drives the power roller 3 to rotate, providing power to the power roller 3.
[0020] The crystal coating system also includes a base plate 6; the side plate 1 and the drive motor 51 are all mounted on the base plate 6, and the base plate 6 is connected to the crystal label printer; the relative position of the side plate 1 and the drive motor 51 can achieve a certain accuracy.
[0021] A clamp-type thermocouple 211 is installed at the end of the pressing roller 21 to control the heating component of the pressing roller 21 in real time, so that the temperature on the pressing roller 21 is kept in a balanced state. The temperature on the pressing roller 21 is monitored in real time to ensure that the pressing roller 21 reaches the set temperature when it acts on the transfer film and release paper, and the bonding effect of the transfer film and release paper is good. A temperature control switch 2212 is installed on the support frame 221 near the end of the pressing roller 21 to control the heating component of the pressing roller 21 in real time, so that the temperature on the pressing roller 21 is kept in a constant temperature state, which is beneficial to the bonding stability of the transfer film and release paper.
[0022] The height adjustment mechanism 22 also includes a vertical guide rail 2281 and a vertical slider 2282 that cooperate with each other; the vertical guide rail 2281 is mounted on the side plate 1; the vertical slider 2282 is mounted on the lifting frame 221; the vertical guide rail 2281 and the vertical slider 2282 cooperate with each other to provide guidance for the vertical lifting of the lifting frame 221.
[0023] The height adjustment plate 222 is also provided with vertical guide holes 2222; there are two vertical guide holes 2222, which are set on both sides of the height adjustment hole 2221; the height adjustment mechanism 22 also includes a guide shaft 2291 and a limiting screw 2292; one end of the guide shaft 2291 is connected to the side plate 1, and the other end passes through the vertical elongated hole and is fitted with the limiting screw 2292; the screw head of the limiting screw 2292 is slidably engaged with the height adjustment plate 222; the vertical guide hole 2222 engages with the guide shaft 2291 to provide guidance for the vertical lifting and lowering of the height adjustment plate 222; the limiting screw 2292 restricts the position of the guide shaft 2291 and the vertical guide hole 2222 to prevent the height adjustment plate 222 from coming off the guide shaft 2291.
[0024] The guide shaft 2291 includes a cylindrical section 22911 and a square section 22912. The cylindrical section 22911 is inserted into the vertical guide hole 2222. The end of the square section 22912 abuts against the height adjustment plate 222. The cylindrical section 22911 and the vertical guide hole 2222 cooperate to improve the vertical guiding effect. The end of the square section 22912 cooperates with the height adjustment plate 222 to limit the horizontal position of the height adjustment plate 222.
[0025] The height adjustment mechanism 22 also includes a synchronous shaft 22913; the end of the synchronous shaft 22913 is coaxially fixed to the end of the operating handle 223; the synchronous shaft 22913 ensures that the lifting frames 221 at both ends of the pressing roller 21 rise and fall synchronously, and synchronously adjusts the adjustment amount of the preload springs 225 at both ends of the pressing roller 21.
[0026] The adjustable high-pressure roller assembly also includes a protective housing; the protective housing covers the end of the pressing roller 21 and protects the height adjustment mechanism 22.
[0027] The protective shell and side plate 1 are connected by screws to form a whole.
[0028] The protective housing includes housing A 231 and housing B 232; housing A 231 is provided at the end of the pressing roller 21 where the temperature control switch 2212 is located, and has an arched hole 2311 on the side to facilitate observation of the working status of the passive pulley 53, the temperature control switch 2212, and the clamp-type thermocouple 211.
[0029] The working process of this embodiment: ① Preliminary adjustment of the preload of the pressing roller 21 Pressing roller 21 onto power roller 3 compresses preload spring 225 to a certain extent; according to design requirements, rotate adjusting screw 226 to compress preload spring 225 to the designed degree for preliminary adjustment of preload pressure of pressing roller 21. ② Lifting the pressing roller 21 Rotate the operating handle 223 in the opposite direction to rotate the cam 224; the rotating cam 224 acts on the height adjustment hole 2221, causing the height adjustment plate 222 to rise vertically; during the vertical rise of the height adjustment plate 222, the preload spring 225 will first reduce its compression as the adjusting screw 226 rises, and then be passively stretched; at the same time, the gap 227 between the bottom of the horizontal plate 2211 and the top of the height adjustment plate 222 will gradually decrease until the top of the height adjustment plate 222 abuts against the bottom of the horizontal plate 2211; then, the top of the height adjustment plate 222 rises together with the horizontal plate 2211; the horizontal plate 2211 also rises together with the lifting frame 221 and the end of the pressing roller 21; the gap between the pressing roller 21 and the power roller 3 increases, making it easier for the crystal mark to pass through; ③ Pass the crystal label through the gap between the pressing roller 21 and the power roller 3. ④ Precisely control the descent of the pressing roller 21 Rotate the operating handle 223 forward to rotate the cam 224; the rotating cam 224 acts on the height adjustment hole 2221, causing the height adjustment plate 222 to descend vertically; during the vertical descent of the height adjustment plate 222, the preload spring 225 will be gradually compressed; subsequently, a gap 227 will be exposed between the bottom of the horizontal plate 2211 and the top of the height adjustment plate 222, and this gap 227 will gradually increase until the pressure roller 21 is about to fall onto the tension roller; then, slowly rotate the operating handle 223 forward until the pressure roller 21 falls onto the tension roller, and maintain a suitable preload on the crystal mark on the tension roller; at this moment, the compression amount of the preload spring 225 is more suitable for the forming of the crystal mark compared with the compression amount of the preload spring 225 in step ①.
[0030] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that: the cam 224 includes a cylindrical wheel 2241, a fastening pin 2242, and a rolling bearing 2243; the end face of the cylindrical wheel 2241 is provided with an eccentric through hole 22411; the middle part of the operating handle 223 passes through the eccentric through hole 22411, ensuring that the operating handle 223 drives the cylindrical wheel 2241 to rotate, thus achieving the effect of the cam 224; the cylindrical wheel 2241 is connected to the middle part of the operating handle 223 through the fastening pin 2242, ensuring the fixed connection between the cylindrical wheel 2241 and the operating handle 223; the rolling bearing 2243 is fitted outside the cylindrical wheel 2241 to reduce the rotational resistance of the cylindrical wheel 2241.
[0031] The operating handle 223 has a keyway 2231 in the middle; the end of the fastener 2242 abuts against the bottom of the keyway 2231, thereby improving the connection strength between the cylindrical wheel 2241 and the operating handle 223.
[0032] The bottom of the keyway 2231 is provided with a circular limiting blind hole 22311; the end of the fastener 2242 is inserted into the limiting blind hole 22311 to improve the connection effect between the cylindrical wheel 2241 and the operating handle 223.
Claims
1. A crystal coating system, characterized in that, The device includes two side plates, an adjustable high-pressure closing roller assembly, a power roller, and a fabric feeding roller. The adjustable high-pressure closing roller assembly includes a pressing roller and two height adjustment mechanisms. Each height adjustment mechanism includes a support frame, a height adjustment plate, an operating handle, a cam, a preload spring, and an adjusting screw. The side plates and height adjustment mechanisms are symmetrically arranged on both sides. The power roller, pressing roller, and fabric feeding roller are all horizontally arranged between the two side plates. The ends of the power roller and the fabric feeding roller are rotatably connected to the side plates. The end of the pressing roller is rotatably connected to the support frame. The support frame slides vertically with the side plates. The support frame extends outward to form a horizontal plate. The adjusting screw penetrates vertically through the horizontal plate and is threadedly connected to the top of the height adjustment plate. The preload spring is fitted in the middle of the adjusting screw. The upper end of the preload spring connects to the top of the adjusting screw. The lower end of the preload spring connects to the horizontal plate. The middle of the height adjustment plate has a height adjustment hole that matches the side of the cam. The end of the operating handle is rotatably connected to the side plate, and the middle is fixedly connected to the cam. The bottom of the horizontal plate and the top of the height adjustment plate have a gap corresponding to the cam. The height adjustment plate slides vertically with the side plates.
2. The crystal coating system according to claim 1, characterized in that: It also includes a power mechanism; the power mechanism includes a drive motor, a drive pulley, a driven pulley, and a transmission belt; the output shaft of the drive motor is coaxially fixed to the drive pulley; the driven pulley is coaxially fixed to the power roller; and the transmission belt connects the drive pulley and the driven pulley.
3. The crystal coating system according to claim 1, characterized in that: A clamp-type thermocouple is installed at the end of the pressing roller; a temperature control switch is installed on the support frame near the end of the pressing roller.
4. The crystal coating system according to claim 1, characterized in that: The height adjustment mechanism also includes a vertical guide rail and a vertical slider that work together; the vertical guide rail is mounted on the side plate; and the vertical slider is mounted on the lifting frame.
5. The crystal coating system according to claim 1, characterized in that: The height adjustment plate is also provided with vertical guide holes; there are two vertical guide holes, which are set on both sides of the height adjustment hole; the height adjustment mechanism also includes a guide shaft and a limit screw; one end of the guide shaft is connected to the side plate, and the other end passes through the vertical elongated hole and is fitted with a limit screw; the screw head of the limit screw is in sliding engagement with the height adjustment plate.
6. The crystal coating system according to claim 1, characterized in that: The height adjustment mechanism also includes a synchronous shaft; the end of the synchronous shaft is coaxially fixed to the end of the operating handle.
7. The crystal coating system according to claim 1, characterized in that: The cam includes a cylindrical wheel body, a fastener, and a rolling bearing; the end face of the cylindrical wheel body is provided with an eccentric through hole; the middle part of the operating handle passes through the eccentric through hole; the cylindrical wheel body is connected to the middle part of the operating handle through the fastener; the rolling bearing is fitted onto the cylindrical wheel body.
8. The crystal coating system according to claim 7, characterized in that: The operating handle has a keyway in the middle; the end of the fastener abuts against the bottom of the keyway.
9. The crystal coating system according to claim 8, characterized in that: The bottom of the keyway is provided with a circular limiting blind hole; the end of the fastener is inserted into the limiting blind hole.
10. The crystal coating system according to claim 1, characterized in that: The adjustable high-pressure pressing roll assembly also includes a protective housing; the protective housing covers the end of the pressing roll.