Coloring device for double-color enamel

Abstract

The invention relates to the technical field of enamel coloring, in particular to a double-color enamel coloring device which comprises a driving frame, a storage barrel is installed on one side of the driving frame, a driving motor is fixedly installed on the storage barrel, the driving motor is connected with a piston cylinder, the piston cylinder is fixedly installed on the storage barrel, and the piston cylinder is fixedly connected with the driving motor. The bottom of the storage barrel is rotationally connected with a plurality of limiting plates, and a rubber film is fixedly installed between every two adjacent limiting plates. When large-range coloring is carried out, a driving assembly pushes a pushing plate to move downwards to abut against a limiting plate and then pushes the limiting plate to be unfolded all around, so that a storage barrel can rapidly carry out filling operation, and when small-range coloring is carried out, the driving assembly pushes the pushing plate to move upwards to be away from the limiting plate, and the limiting plate gets close to the middle to abut against the side wall of a discharging hopper; and the storage barrel carries out filling operation through the discharging hopper, so that during enamel coloring, the coloring efficiency of the coloring device is guaranteed, and the finished product quality of colored enamel is also guaranteed.

Description

Technical Field

[0001] This invention relates to the field of enamel coloring technology, specifically to a two-color enamel coloring device. Background Technology

[0002] Enamel is a decorative or protective layer formed by melting glass onto the surface of a porcelain body. It is commonly used in handicrafts. The production process involves first creating an enamel blank to form the enamel shape, then glazing the surface to form a base glaze. Finally, coloring is applied to the glazed enamel. Enamel pigments are made from a mixture of minerals such as quartz, feldspar, and borax with metal oxides. The glaze is then filled into the corresponding areas. Because enamel is a handicraft, the coloring process requires extreme precision. Most coloring devices use a pipette for coloring, with manual control of the amount applied. To address this issue, patent application CN215744580U provides a metal commemorative plate. The device for applying enamel paint uses a rubber ring to control the enamel application through a straw. A slanted clip at the top of the straw allows for filling smaller gaps with enamel. While this structure can fill and paint smaller gaps, for larger enamel pieces, which have both large and very small filling areas, the small amount of paint applied results in a slower filling speed, significantly reducing the efficiency of enamel painting and impacting production efficiency. Furthermore, low painting efficiency can severely affect the quality of the finished enamel piece for enamels with specific firing time requirements.

[0003] To address this, a two-color enamel coloring device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a two-color enamel coloring device to solve the problem of precisely controlling the output amount when coloring enamel, and at the same time to solve the problem that the coloring device can perform fine coloring on small areas of enamel but cannot guarantee the efficiency of enamel coloring.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A two-color enamel coloring device includes a drive frame, a storage cylinder mounted on one side of the drive frame, a drive motor fixedly mounted on the storage cylinder, a piston cylinder connected to the drive motor and fixedly mounted on the storage cylinder, multiple limiting plates rotatably connected to the bottom of the storage cylinder, and a rubber membrane fixedly mounted between two adjacent limiting plates, a discharge hopper located at the center of the bottom of the storage cylinder, multiple support rods fixedly mounted on the discharge hopper and installed inside the storage cylinder, a push plate slidably connected to the support rods inside the storage cylinder, a drive assembly fixedly mounted on the storage cylinder and connected to the push plate, and a discharge rod connected to the push plate inside the storage cylinder, the discharge rod being positioned in the middle of the multiple support rods. When the push plate moves downward, the multiple limiting plates move towards the center and abut against the side wall of the discharge hopper, while the discharge rod retracts into the storage cylinder. When the push plate moves upward, the multiple limiting plates spread outward away from the center of the discharge hopper, and the discharge rod passes through the discharge hopper and extends outside the storage cylinder.

[0007] When coloring enamel, different patterns result in different colors for each area, leading to varying areas that can be colored with different pigments. When the area to be colored is large, a coloring device with a large outlet is used to ensure coloring efficiency. However, if the area to be colored is very small, this large outlet device becomes unusable. Coloring will cause dripping material to cover several adjacent areas, and because different colors are being applied, the pigments in the covered areas mix, affecting the quality of the finished product. Therefore, in this invention, when coloring a large area, the storage cylinder... The installed drive assembly operates, pushing the lower push plate downwards. The moving push plate abuts against the lower limit plate. Because a rubber membrane is fixedly installed between adjacent limit plates, the rubber membrane pulls multiple limit plates closer to the central axis of the storage cylinder. After the downward-moving push plate abuts against the limit plate, the diameter of the push plate remains unchanged, pushing the limit plate to unfold in all directions. At the same time, the unfolded limit plate also pulls the connected rubber membrane taut, ensuring the efficiency of the coloring device in coloring the enamel. When coloring a small area, the drive assembly installed on the storage cylinder operates, pushing the lower push plate upwards, moving the push plate away from the lower limit plate. The limiting plate will continue to move towards the center axis of the storage cylinder under the push of the taut rubber diaphragm. Because there is a discharge hopper in the middle of the bottom of the storage cylinder, the taut rubber diaphragm pulls the limiting plate against the discharge hopper. Of course, the upward movement of the pushing plate will cause the discharge rod to move downward and pass through the discharge hopper. At this time, the discharge port at the bottom of the storage cylinder is blocked, and the powder in the storage cylinder will be discharged through the discharge hopper. Of course, because there is a discharge hopper, the powder discharged from the discharge hopper will be applied to the corresponding area by the discharge rod. The discharge rod can accurately apply the powder to the designated position. Of course, using a coloring device with multiple different models of discharge heads can also achieve precise coloring of small areas. While achieving the desired effect, for the coloring field, the drawn patterns are irregularly shaped, with one side of the coloring area being wider than the other. This means that different models of ejector heads need to be changed when filling the same area in actual use. Frequent ejector head changes not only affect production efficiency but also significantly increase the energy consumption of the equipment. The ejector bar can prevent the injection needle from getting clogged when applying the enamel through the injection needle. Through the cooperation of the ejector bar and the limiting plate, the coloring efficiency of the coloring device and the quality of the finished enamel product are both guaranteed during the coloring process. This not only improves the enamel production efficiency but also reduces the energy consumption required to produce the corresponding enamel.

[0008] Preferably, the drive assembly includes a threaded rod rotatably connected to a storage cylinder. A stabilizing frame connected to the threaded rod is fixedly mounted on the storage cylinder. The output shaft of the drive motor is connected to the threaded rod via a gearbox. A movable plate is threadedly connected to the threaded rod. One side of the movable plate is fixedly mounted to the movable end of a piston cylinder. A plurality of first push rods are slidably connected to the storage cylinder. The first push rods are arranged in a ring around the threaded rod. One end of the first push rod is fixedly mounted to the movable plate. A piston ring is fixedly mounted to the other end of the first push rod. A plurality of second push rods arranged in a ring are fixedly mounted between the piston ring and the push plate.

[0009] When different areas need to be colored, and the position of the push plate needs to be changed, the drive motor mounted on the storage cylinder operates. The drive motor drives the threaded rod to rotate in the opposite direction via the gearbox. The rotating threaded rod drives the movable plate threaded to it to descend. The descending movable plate drives the first push rod, which is fixed at one end, to move down. The descending first push rod drives the fixed piston ring to move down. The descending piston ring drives the push plate to move down via multiple fixed second push rods, so that the push plate abuts against the limit plate. Of course, because one side of the movable plate is fixedly installed to the moving end of the piston cylinder, the powder in the piston cylinder will be pushed into the storage cylinder below during the downward movement of the movable plate. When the motor drives the threaded rod to rotate forward through the gearbox, the rotating threaded rod drives the moving plate threaded to it to rise. The moving plate, through the first push rod, piston ring and second push rod, drives the push plate away from the multiple limit plates below. Of course, during the upward movement of the moving plate, it pushes the piston cylinder to extract the powder. At the same time, the drive assembly drives the push plate to move up and down, so that the piston cylinder draws the powder into the piston cylinder for coloring. The up and down movement of the push plate can drive the discharge rod and the limit plate to quickly switch between two modes of efficiency and precision, so that the coloring efficiency of the coloring device and the quality of the finished enamel product are guaranteed when coloring the enamel.

[0010] Preferably, a piston cylinder is fixedly installed inside the storage cylinder, and a piston tube is sleeved on the outside of the piston cylinder. The piston tube is fixedly installed on the inner wall of the storage cylinder, and a piston cavity is formed between the piston tube and the outer wall of the piston cylinder. The piston ring slides in the piston cavity, and the first push rod and the second push rod both slide in the piston tube. A piston block is slidably connected inside the piston cylinder, and a piston rod is fixedly installed at one end of the piston block. One end of the piston rod extends to the outside of the piston cylinder and is fixedly installed with the discharge rod. A hole communicating with the piston cavity is opened at the top of the piston cylinder.

[0011] The up-and-down movement of the push block changes the position of the limiting plate, thus altering the position of the discharge bar. Specifically, when the push plate moves downward, it requires the movement of the piston rings. The piston rings are slidably connected to the piston chamber. As they slide downward, because the top of the piston cylinder has a hole communicating with the piston chamber, liquid inside the piston cylinder is drawn into the piston chamber through this hole. This causes the liquid level in the piston cylinder to decrease continuously. The decreasing liquid level causes the piston block inside the piston cylinder to retract into the piston cylinder, allowing the piston rod connected to the piston block on one side to push the discharge bar, which then passes through the hopper for precise coloring. When the push plate moves upward, it requires the movement of the piston rings. The piston ring moves by sliding within the piston chamber. When it slides upwards, because the top of the piston cylinder has a hole communicating with the piston chamber, the liquid in the piston chamber is drawn into the piston chamber through the hole at the top. This causes the moving end of the piston cylinder to contract and move away from the nearby discharge hopper, causing the discharge rod connected to one side to move downwards. The discharge rod allows for precise judgment and filling of the small area below. The up-and-down movement of the push plate allows the discharge rod and the limiting plate to quickly switch between efficiency and precision modes, ensuring both the coloring efficiency of the coloring device and the quality of the finished enamel product after coloring.

[0012] Preferably, the push plate has multiple through slots arranged in a ring, and the side wall of the push plate has a downward inclined surface. Multiple balls are distributed on the inclined surface, and the balls are rolled and connected to the push plate. The number of balls is equal to the number of limiting plates. When the push plate moves downward, the balls roll on the limiting plates.

[0013] When the push plate moves down to abut against the lower limiting plate and pushes the limiting plate to open, the push plate will rub against the limiting plate for a long time, causing wear after long-term use. Therefore, the side wall of the push plate is set as an inclined surface to allow the push plate to make better contact with the limiting plate. Of course, setting ball bearings on the inclined surface of the push plate can further reduce the friction between the push plate and the limiting plate. The number of ball bearings is equal to the number of limiting plates, so that during the downward movement of the push plate, the ball bearings on the push plate will roll one by one on each limiting plate. The up and down movement of the push plate can be smooth, the service life of the equipment is longer, and the coloring efficiency of the coloring device and the quality of the finished enamel product are guaranteed when coloring the enamel.

[0014] Preferably, the discharge bar is provided with a guide groove, the guide groove is teardrop-shaped, the conical tail of the guide groove is facing the piston cylinder, and the arc-shaped head of the guide groove is facing away from the piston cylinder.

[0015] When the discharge rod passes through the discharge hopper, it can block the discharge port, preventing the powder coating in the storage cylinder from being discharged onto the discharge rod. Therefore, a guide groove needs to be made on the discharge rod to allow the powder coating in the storage cylinder to drip continuously onto the discharge rod. The conical tail of the guide groove is positioned towards the piston cylinder, while the arc-shaped head is positioned away from the piston cylinder. When the discharge rod moves out of the storage cylinder from the discharge hopper, the arc-shaped head of the guide groove moves out first, creating a wide groove that allows the powder coating in the storage cylinder to continuously flow onto the discharge rod. As the discharge rod continues to move, the guide groove becomes smaller and smaller until it disappears completely, preventing the powder coating in the storage cylinder from being discharged. This avoids excessive powder pigment being discharged from the storage cylinder through the discharge rod during coloring.

[0016] Preferably, the support rod includes a fixed rod and a movable rod. The fixed rod is fixedly installed inside the storage cylinder. A movable frame is slidably connected to the fixed rod. One end of the movable frame is fixedly installed to the movable rod. A compression spring is placed inside the movable frame. The two ends of the compression spring abut against the inner wall of the movable frame and the fixed rod, respectively. A plurality of evenly arranged locking slots are opened on the discharge hopper. A locking block is fixedly installed on the limiting plate. When the pushing plate moves to abut against the movable frame and pushes the movable frame to continue moving, the locking block enters the locking slot.

[0017] When the limiting plate closes towards the middle and abuts against the side wall of the middle discharge hopper, the powder pigment in the storage cylinder will be discharged through the side wall between the limiting plate and the discharge hopper due to gravity, and fall onto the enamel, because the limiting plate relies on the tightening of the rubber membrane to approach the middle discharge hopper. Therefore, in order to ensure that the powder pigment does not leak out through the connection between the limiting plate and the discharge hopper, specifically, the upward-moving push plate drives the moving frame on the movable rod to move upward. Because the moving frame slides on the fixed rod, the push plate can drive the movable rod to move upward. The upward-moving movable rod drives the bottom fixed discharge hopper to move upward. The discharge hopper has multiple evenly arranged locking slots, and the limiting plate is fixedly installed with locking blocks. Therefore, when the limiting plate closes towards the middle and abuts against the middle discharge hopper, the locking blocks on it will enter the locking slots. During the upward movement of the discharge hopper, the discharge hopper will completely lock the locking blocks in the locking slots, ensuring that the limiting plate will not leak when the discharge hopper is running, and ensuring the quality of the finished enamel after coloring.

[0018] Preferably, the outer wall of the storage cylinder has multiple circumferentially distributed upper mounting grooves, and the top of the limiting plate has a lower mounting groove that cooperates with the upper mounting grooves. Rubber sheets are fixedly installed in the upper and lower mounting grooves, and the rubber sheets connect the storage cylinder and the limiting plate. Because the limiting plate needs to rotate relative to the storage cylinder, rubber sheets are installed in the upper and lower mounting grooves to connect the storage cylinder and the limiting plate. The rubber sheets are made of flexible material, allowing the limiting plate to maintain a large range of movement relative to the storage cylinder.

[0019] Preferably, a rubber ring is fixedly installed on the discharge hopper. The rubber ring is located near the storage cylinder through the through hole of the discharge hopper. Because the through hole of the discharge hopper cannot perfectly match the discharge rod, some pigment will leak out when the discharge rod passes through the discharge hopper. This prevents the storage cylinder from discharging too much powder pigment through the discharge rod during coloring, which would reduce the quality of the finished enamel product after coloring.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. When applying color to a large area, the drive component pushes the push plate downwards, and after it touches the limit plate, it pushes the limit plate to expand outwards, allowing the storage cylinder to quickly fill the container. When applying color to a small area, the drive component pushes the push plate upwards away from the limit plate, causing the limit plate to move towards the center and touch the side wall of the discharge hopper, allowing the storage cylinder to fill the container through the discharge hopper. This ensures both the coloring efficiency of the coloring device and the quality of the finished enamel product after coloring.

[0022] 2. When the push plate moves upward, it will cause the discharge rod to move downward and pass through the discharge hopper. At this time, the discharge port formed by the limiting plate is blocked, and the powder in the storage cylinder will be discharged through the discharge hopper. The powder discharged from the discharge hopper will flow onto the discharge rod and drip down the discharge rod to the corresponding area that needs to be filled. The discharge rod can approach a small area and accurately apply the powder coating to the designated position, so that the coloring efficiency of the coloring device and the quality of the finished enamel product are guaranteed when the enamel is colored.

[0023] 3. When the limiting plate closes to the middle and blocks the middle discharge hopper, the locking block on the limiting plate will enter the locking groove. During the upward movement of the discharge hopper, the discharge hopper will completely lock the locking block in the locking groove, ensuring that the limiting plate will not leak when the discharge hopper is running. This ensures both the coloring efficiency of the coloring device and the quality of the finished enamel product after coloring. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2This is a schematic diagram of the internal structure of the storage cylinder in this invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the push plate in this invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the piston tube in this invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the mobile frame in this invention;

[0029] Figure 6 This is an enlarged structural schematic diagram of the material guide channel in this invention;

[0030] Figure 7 This is a schematic diagram of the discharge hopper in this invention.

[0031] In the diagram: 1. Drive frame; 2. Storage cylinder; 3. Piston cylinder; 4. Drive motor; 5. Stabilizer; 6. Threaded rod; 7. Moving plate; 8. Gearbox; 9. First push rod; 10. Limiting plate; 11. Rubber diaphragm; 12. Rubber sheet; 13. Discharge hopper; 131. Fixed rod; 132. Moving frame; 133. Movable rod; 134. Compression spring; 14. Discharge bar; 15. Second push rod; 16. Piston cylinder; 161. Piston rod; 17. Push plate; 18. Ball bearing; 19. Piston ring; 20. Guide groove; 21. Locking groove; 22. Locking block; 23. Upper mounting groove; 24. Lower mounting groove; 25. Piston tube; 26. Rubber ring. Detailed Implementation

[0032] Please see Figures 1 to 7 The present invention provides a two-color enamel coloring device, the technical solution of which is as follows:

[0033] A two-color enamel coloring device, please refer to Figure 1 , Figure 2 and Figure 3The system includes a drive frame 1, a storage cylinder 2 mounted on one side of the drive frame 1, a drive motor 4 fixedly mounted on the storage cylinder 2, a piston cylinder 3 connected to the drive motor 4, and the piston cylinder 3 fixedly mounted on the storage cylinder 2. Multiple limiting plates 10 are rotatably connected to the bottom of the storage cylinder 2. Multiple circumferentially distributed upper mounting grooves 23 are formed on the outer wall of the storage cylinder 2. A lower mounting groove 24, which cooperates with the upper mounting grooves 23, is formed on the top of the limiting plates 10. Rubber sheets 12 are fixedly installed in the upper mounting grooves 23 and lower mounting grooves 24. The rubber sheets 12 connect the storage cylinder and the limiting plates 10, and a rubber membrane 11 is fixedly installed between two adjacent limiting plates 10. A discharge hopper 13 is located at the middle of the bottom of the storage cylinder 2. A fixed... A rubber ring 26 is installed, located near the storage cylinder at the through hole on the discharge hopper 13. Multiple support rods are fixedly installed on the discharge hopper 13, and the support rods are installed inside the storage cylinder 2. A push plate 17 is provided inside the storage cylinder 2, and the push plate 17 is slidably connected to the support rods. A discharge rod 14 connected to the push plate 17 is provided inside the storage cylinder 2, and the discharge rod 14 is located in the middle of the multiple support rods. When the push plate 17 moves downward, multiple limit plates 10 move towards the center and abut against the side wall of the discharge hopper 13. At the same time, the discharge rod 14 retracts into the storage cylinder 2. When the push plate 17 moves upward, multiple limit plates 10 spread outwards away from the center of the discharge hopper 13, and the discharge rod 14 passes through the discharge hopper 13 and extends out of the storage cylinder 2.

[0034] Please see Figure 2 and Figure 3 A threaded rod 6 is rotatably connected inside the storage cylinder 2. A stabilizing frame 5 connected to the threaded rod 6 is fixedly installed on the storage cylinder 2. The output shaft of the drive motor 4 is connected to the threaded rod 6 through a gearbox 8. A movable plate 7 is threadedly connected to the threaded rod 6. One side of the movable plate 7 is fixedly installed to the movable end of the piston cylinder 3. Multiple first push rods 9 are slidably connected to the storage cylinder 2. The first push rods 9 are arranged in a ring around the threaded rod 6. One end of the first push rod 9 is fixedly installed to the movable plate 7. A piston ring 19 is fixedly installed to the other end of the first push rod 9. Multiple second push rods 15 arranged in a ring are fixedly installed between the piston ring 19 and the push plate 17.

[0035] Please see Figure 4 , Figure 6 and Figure 7 A piston cylinder 16 is fixedly installed inside the storage cylinder 2. A piston tube 25 is sleeved on the outside of the piston cylinder 16. The piston tube 25 is fixedly installed on the inner wall of the storage cylinder. A piston cavity is formed between the piston tube 25 and the outer wall of the piston cylinder 16. The piston ring 19 slides in the piston cavity. The first push rod 9 and the second push rod 15 both slide in the piston tube 25. A piston block is slidably connected inside the piston cylinder 16. A piston rod 161 is fixedly installed at one end of the piston block. One end of the piston rod 161 extends to the outside of the piston cylinder 16 and is fixedly installed with the discharge rod 14. A hole communicating with the piston cavity is opened at the top of the piston cylinder 16.

[0036] Please see Figure 1 , Figure 2 and Figure 3 The push plate 17 has multiple through slots arranged in a ring. The side wall of the push plate 17 has a downward inclined surface. Multiple balls 18 are distributed on the inclined surface. The balls 18 are tumbling on the push plate 17. The number of balls 18 is equal to the number of limiting plates 10. When the push plate 17 moves downward, the balls 18 roll on the limiting plates 10.

[0037] Please see Figure 6 The discharge bar 14 is provided with a guide groove 20, which is teardrop-shaped. The conical tail of the guide groove 20 is positioned towards the piston cylinder 16, and the arc-shaped head of the guide groove 20 is positioned away from the piston cylinder 16.

[0038] Please see Figure 2 and Figure 5 The support rod includes a fixed rod 131 and a movable rod 133. The fixed rod 131 is fixedly installed inside the storage cylinder. A movable frame 132 is slidably connected to the fixed rod 131. One end of the movable frame 132 is fixedly installed to the movable rod 133. A compression spring 134 is placed inside the movable frame 132. The two ends of the compression spring 134 abut against the inner wall of the movable frame 132 and the fixed rod 131, respectively. A plurality of evenly arranged locking slots 21 are opened on the discharge hopper 13. A locking block 22 is fixedly installed on the limiting plate 10. When the pushing plate 17 moves to abut against the movable frame 132 and pushes the movable frame 132 to continue moving, the locking block 22 enters the locking slot 21.

[0039] Please see Figure 1 , Figure 2 and Figure 3 When the coloring device is in use, the enamel to be colored is placed on the coloring device. The drive frame 1 on one side pushes the storage cylinder 2 to move above the area of ​​the enamel to be colored. When a large area of ​​the enamel needs to be filled with color, the drive motor 4 on the storage cylinder runs. The drive motor 4 drives the threaded rod 6 to rotate in the opposite direction through the gearbox 8. The rotating threaded rod 6 drives the moving plate 7 threaded on it to descend. The descending moving plate 7 drives the first push rod 9 fixed at one end to move down. The descending first push rod 9 drives the fixed piston ring 19 to move down. The descending piston ring 19 drives the push plate 17 to move down through multiple fixed second push rods 15, so that the push plate 17 abuts against the limit plate 10. Of course, since one side of the moving plate 7 is fixedly installed to the movable end of the piston cylinder 3, the powder in the piston cylinder 3 will be pushed into the storage cylinder 2 below during the process of the moving plate 7 moving down.

[0040] Please see Figure 1 , Figure 2 and Figure 3The moving push plate 17 abuts against the lower limiting plate 10. As the push plate 17 moves downwards, abutting the lower limiting plate 10 and pushing it open, the push plate 17 will experience prolonged friction with the limiting plate 10, leading to wear after long-term use. Therefore, the sidewall of the push plate 17 is designed as an inclined surface to improve contact between the push plate 17 and the limiting plate 10. Furthermore, the presence of ball bearings 18 on the inclined surface of the push plate 17 further reduces friction between them. The number of ball bearings 18 is equal to the number of limiting plates 10, ensuring that during the downward movement of the push plate 17, each ball bearing 18 rolls one-to-one on each limiting plate 10. The up-and-down movement is smooth, and the service life of the equipment is longer. Because a rubber membrane 11 is fixedly installed between two adjacent limit plates 10, the rubber membrane 11 will pull multiple limit plates 10 toward the central axis of the storage cylinder 2. After the downward-moving push plate 17 abuts against the limit plate 10, the diameter of the push plate 17 remains unchanged, pushing the limit plate 10 to unfold in all directions. The storage cylinder and the limit plate 10 are connected by installing rubber sheets 12 on the upper mounting groove 23 and the lower mounting groove 24. The rubber sheet 12 is a flexible material, which allows the limit plate 10 to swing in a large range relative to the storage cylinder 2. At the same time, the unfolded limit plate 10 will also pull the connected rubber membrane 11 to tighten, ensuring the efficiency of the coloring device in coloring the enamel.

[0041] Please refer to the figure. Figure 2 and Figure 3 When it is necessary to fill and color a small area of ​​enamel, the drive motor 4 drives the threaded rod 6 to rotate in the forward direction through the gearbox 8. The rotating threaded rod 6 drives the moving plate 7 threaded on it to rise. The moving plate 7 drives the push plate 17 away from the multiple limiting plates 10 below through the first push rod 9, piston ring 19 and second push rod 15. Of course, during the upward movement of the moving plate 7, it will push the piston cylinder 3 to extract the powder, so that the piston cylinder 3 draws the powder into the piston cylinder 16.

[0042] Please see Figure 1 , Figure 2 and Figure 3 The moving push plate 17 moves away from the lower limiting plate 10. The limiting plate 10 will continue to move towards the central axis of the storage cylinder 2 due to the push of the taut rubber diaphragm 11. Since there is a discharge hopper 13 at the bottom center of the storage cylinder 2, the taut rubber diaphragm 11 pulls the limiting plate 10 to block the discharge hopper 13. Of course, the upward movement of the push plate 17 will drive the discharge rod 14 to move downward and pass through the discharge hopper 13. At this time, the discharge port at the bottom of the storage cylinder 2 is blocked, and the powder in the storage cylinder will be discharged through the discharge hopper 13. Of course, since there is a discharge hopper 13, the powder discharged from the discharge hopper 13 will be applied to the corresponding area through the discharge rod 14. The discharge rod 14 can accurately apply the powder to the designated position.

[0043] Please see Figure 3 and Figure 6 When the discharge rod 14 passes through the discharge hopper 13, it blocks the discharge port of the discharge hopper 13, preventing the powder coating in the storage cylinder 2 from being discharged onto the discharge rod 14. Therefore, a guide groove 20 needs to be opened on the discharge rod 14 so that the powder coating in the storage cylinder 2 can drip continuously onto the discharge rod 14 through the guide groove 20. The conical tail of the guide groove 20 is set towards the side facing the piston cylinder 16, while the arc-shaped head of the guide groove 20 is set away from the piston cylinder 16. On one side, when the discharge rod 14 is moved out of the storage cylinder 2 from the discharge hopper 13, the arc-shaped head of the guide groove 20 will move out first. The groove formed by the arc-shaped head of the guide groove 20 is wide, so the powder coating in the storage cylinder 2 will continuously flow through the groove onto the discharge rod 14. As the discharge rod 14 continues to move, the guide groove 20 becomes smaller and smaller until it disappears completely. At this time, the powder coating in the storage cylinder 2 cannot be discharged, thus avoiding the storage cylinder from discharging too much powder pigment through the discharge rod 14 when the equipment is coloring.

[0044] Please see Figure 2 , Figure 3 and Figure 7 Of course, when the limiting plate 10 closes towards the middle and abuts against the side wall of the middle discharge hopper 13, because the limiting plate 10 is brought closer to the middle discharge hopper 13 by the tightening of the rubber membrane 11, the powder pigment in the storage cylinder 2 will be discharged through the side wall between the limiting plate 10 and the discharge hopper 13 due to gravity, and flow onto the enamel. Therefore, in order to ensure that the powder pigment will not be discharged through the connection between the limiting plate 10 and the discharge hopper 13, specifically, the upward-moving push plate 17 drives the moving frame 132 on the movable rod 133 to move upward. Because the moving frame 132 slides on the fixed rod 131, the push plate 17 moves upward. The movable plate 17 can drive the movable rod 133 to move upward. The upward-moving movable rod 133 drives the bottom fixed discharge hopper 13 to move upward. The discharge hopper 13 has multiple evenly arranged locking grooves 21. The limiting plate 10 is fixedly installed with locking blocks 22. So when the limiting plate 10 closes to the middle and abuts against the middle discharge hopper 13, the locking blocks 22 on it will enter the locking grooves 21. During the upward movement of the discharge hopper 13, the discharge hopper 13 will completely lock the locking blocks 22 in the locking grooves 21, ensuring that the limiting plate 10 will not leak when the discharge hopper 13 is in operation.

[0045] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A two-color enamel coloring device, comprising a drive frame (1), a storage cylinder (2) mounted on one side of the drive frame (1), a drive motor (4) fixedly mounted on the storage cylinder (2), the drive motor (4) connected to a piston cylinder (3), the piston cylinder (3) fixedly mounted on the storage cylinder (2), characterized in that, The bottom of the storage cylinder (2) is rotatably connected to multiple limiting plates (10), and a rubber membrane (11) is fixedly installed between two adjacent limiting plates (10). A discharge hopper (13) is provided at the middle position of the bottom of the storage cylinder (2), and multiple support rods are fixedly installed on the discharge hopper (13). The support rods are installed inside the storage cylinder (2). A push plate (17) is provided inside the storage cylinder (2), and the push plate (17) is slidably connected to the support rods. A drive assembly is fixedly installed on the storage cylinder (2), and the drive assembly is connected to the push plate (17). The storage cylinder (2) is provided with a discharge rod (14) connected to the push plate (17). The discharge rod (14) is located in the middle of multiple support rods. When the push plate (17) moves downward, multiple limiting plates (10) move towards the middle and abut against the side wall of the discharge hopper (13). At the same time, the discharge rod (14) retracts into the storage cylinder (2). When the push plate (17) moves upward, multiple limiting plates (10) spread out to the sides away from the discharge hopper (13). The discharge rod (14) passes through the discharge hopper (13) and extends out of the storage cylinder (2).

2. The two-color enamel coloring device according to claim 1, characterized in that, The drive assembly includes a threaded rod (6) rotatably connected to a storage cylinder (2). A stabilizer (5) connected to the threaded rod (6) is fixedly installed on the storage cylinder (2). The output shaft of the drive motor (4) is connected to the threaded rod (6) through a gearbox (8). A movable plate (7) is threadedly connected to the threaded rod (6). One side of the movable plate (7) is fixedly installed to the movable end of the piston cylinder (3). A plurality of first push rods (9) are slidably connected to the storage cylinder (2). The first push rods (9) are arranged in a ring around the threaded rod (6). One end of the first push rod (9) is fixedly installed to the movable plate (7). A piston ring (19) is fixedly installed at the other end of the first push rod (9). A plurality of second push rods (15) arranged in a ring are fixedly installed between the piston ring (19) and the push plate (17).

3. The two-color enamel coloring device according to claim 2, characterized in that, A piston cylinder (16) is fixedly installed inside the storage cylinder (2). A piston tube (25) is sleeved on the outside of the piston cylinder (16). The piston tube (25) is fixedly installed on the inner wall of the storage cylinder. A piston cavity is formed between the piston tube (25) and the outer wall of the piston cylinder (16). The piston ring (19) slides in the piston cavity. The first push rod (9) and the second push rod (15) both slide in the piston tube (25). A piston block is slidably connected inside the piston cylinder (16). A piston rod (161) is fixedly installed at one end of the piston block. One end of the piston rod (161) extends to the outside of the piston cylinder (16) and is fixedly installed with the discharge rod (14). A hole communicating with the piston cavity is opened at the top of the piston cylinder (16).

4. The two-color enamel coloring device according to claim 2, characterized in that, The push plate (17) has multiple through slots arranged in a ring. The side wall of the push plate (17) has a downward inclined surface. Multiple balls (18) are distributed on the inclined surface. The balls (18) are rolled on the push plate (17). The number of balls (18) is equal to the number of limiting plates (10). When the push plate (17) moves downward, the balls (18) roll on the limiting plates (10).

5. The two-color enamel coloring device according to claim 1, characterized in that, The discharge bar (14) is provided with a guide groove (20), which is teardrop-shaped. The conical tail of the guide groove (20) is positioned towards the piston cylinder (16), and the arc-shaped head of the guide groove (20) is positioned away from the piston cylinder (16).

6. The two-color enamel coloring device according to claim 2, characterized in that, The support rod includes a fixed rod (131) and a movable rod (133). The fixed rod (131) is fixedly installed inside the storage cylinder. A movable frame (132) is slidably connected to the fixed rod (131). One end of the movable frame (132) is fixedly installed to the movable rod (133). A compression spring (134) is placed inside the movable frame (132). The two ends of the compression spring (134) abut against the inner wall of the movable frame (132) and the fixed rod (131) respectively. A plurality of evenly arranged locking slots (21) are opened on the discharge hopper (13). A locking block (22) is fixedly installed on the limiting plate (10). When the push plate (17) moves to abut against the movable frame (132) and pushes the movable frame (132) to continue moving, the locking block (22) enters the locking slot (21).

7. The two-color enamel coloring device according to claim 1, characterized in that, The storage cylinder (2) has multiple circumferentially distributed upper mounting grooves (23) on its outer side wall. The top of the limiting plate (10) has a lower mounting groove (24) that cooperates with the upper mounting grooves (23). A rubber sheet (12) is fixedly installed in the upper mounting groove (23) and the lower mounting groove (24). The rubber sheet (12) connects the storage cylinder and the limiting plate (10).

8. The two-color enamel coloring device according to claim 1, characterized in that, A rubber ring (26) is fixedly installed on the discharge hopper (13), and the rubber ring (26) is located on the discharge hopper (13) near the storage cylinder through hole.

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