A cold runner device for quick color change

Abstract

The application discloses a cold runner device capable of quickly replacing colorant and belongs to the technical field of injection molding equipment, mainly comprising a colorant pipeline, a sleeving hole block is fixedly connected to the outer wall of the colorant pipeline, and a temperature stabilizing and colorant replacing mechanism is arranged in front of the sleeving hole block; wherein the temperature stabilizing and colorant replacing mechanism comprises a first constant-temperature water inlet opening arranged in front of the sleeving hole block, and a second constant-temperature water inlet opening is arranged at the rear of the sleeving hole block. The application adopts a replacement butt joint mechanism to drive four linkage supporting rods to slide rightwards along the inside of the sleeving hole block under the driving of a square frame linkage plate, a sealing sleeve plate drives two guide inserting rods to be respectively inserted into the inside of a guide positioning hole and the inside of a butt joint hole position to form positioning butt joint, after a piston sleeve is quickly butt jointed into the inside of a metal butt joint block, the colorant pipeline and an extrusion butt joint sleeve block complete butt joint feeding, and other colors can be used to extrude and squeeze out the rubber colorant in the original runner, and the colorant replacement color efficiency is effectively improved.

Description

A cold runner device for quick colorant replacement Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and more specifically to a cold runner device for quick colorant replacement. Background Technology

[0002] Existing rubber injection molding equipment faces challenges in product processing due to the wide range of applications and diverse product demands for rubber products. For example, different colors of the same product may require different materials during the injection molding process, necessitating the use of a cold runner system for changing the colorant.

[0003] In publicly available technical documents, Chinese Patent Publication No. CN208930731U discloses a full-color 3D printing device. This patent addresses the issue of mixing red, yellow, and blue primary colors in different proportions to produce different colors. Existing color mixing control equipment lacks precise control over the extrusion of the pigments, resulting in a significant discrepancy between the final mixed color and the predicted color, causing considerable frustration for users. Therefore, this patent proposes a full-color 3D printing device. This patent primarily utilizes a threaded rod on the piston and a limiting block on the transition barrel within the full-color 3D printing device to achieve a smaller error in the final mixed pigment ratio, eliminating user frustration and simplifying operation. However, this patent has the following drawbacks:

[0004] When conveying extruded rubber injection molded products, the cold runner for pigments uses a single channel to extrude different colors of rubber pigments, which can cause color mixing and affect the extrusion effect of a single color. This requires a long time to use other colors to extrude the rubber pigments inside the original runner, resulting in a long extrusion time. In addition, the presence of stubborn pigments can lead to low efficiency in changing pigments. Therefore, a cold runner device for quick pigment changing is provided. Summary of the Invention

[0005] Therefore, the present invention provides a cold runner device for quick colorant replacement to solve the technical problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cold runner device for rapid pigment replacement, comprising a pigment pipe, a connecting hole block fixedly connected to the outer wall of the pigment pipe, and a temperature-stabilizing material replacement mechanism provided in front of the connecting hole block; the temperature-stabilizing material replacement mechanism includes a first constant temperature water inlet provided in front of the connecting hole block, and a second constant temperature water inlet provided behind the connecting hole block; a first spiral water pipe and a second spiral water pipe are fixedly connected to one side of the connecting hole block, a water outlet pipe is connected to one end of the first spiral water pipe, and a lower discharge port is threadedly connected to the bottom end of the water outlet pipe; a replacement docking mechanism is provided on the other side of the connecting hole block; a linkage extrusion assembly is installed inside the pigment pipe; and a flow control and temperature adjustment assembly is installed inside the first constant temperature water inlet.

[0007] Preferably, the second spiral water pipe and the first spiral water pipe are respectively connected to the first constant temperature water inlet and the second constant temperature water inlet in a one-to-one correspondence. The inner wall of the pigment pipe is polished. The first spiral water pipe and the second spiral water pipe are both fixedly connected to and connected to the water outlet pipe. The pitch of the first spiral water pipe and the second spiral water pipe is set to 25 cm. The replacement docking mechanism includes multiple linkage support rods set on the other side of the socket block.

[0008] A sealing sleeve is fixedly connected to the outer wall of the linkage rod near one end. A pressing and mating sleeve block is bonded to one side of the sealing sleeve. Two guide rods are installed on the other side of the sealing sleeve near its central position. A rectangular frame linkage plate is fixedly connected to the other end of the linkage rod. A linkage support plate is welded to one side of the rectangular frame linkage plate near its top. A threaded sliding block is welded to the bottom end of the linkage support plate. A first transmission screw is threadedly connected to the inner wall of the threaded sliding block. A guide frame plate is installed on the outer wall of the threaded sliding block. One end of the first transmission screw extends to the outer wall of the guide frame plate and is coaxially connected to a reduction drive motor. The deceleration drive motor is fixedly connected to the guide frame plate. A distance sensor is fixedly connected inside the socket block and located on one side of the linkage support rod. A metal docking block is inserted inside the colorant pipe and located below the distance sensor. A docking hole and a guide positioning hole are sequentially opened on one side of the metal docking block from front to back. Multiple linkage support rods are arranged in a rectangular equidistant distribution, and multiple linkage support rods are slidably connected to the socket block. The guide rod is movably inserted into the guide positioning hole. The vertical cross-sectional area of ​​one end of the guide rod is larger than the vertical cross-sectional area of ​​the other end. The center point of the guide positioning hole and the center point of the guide rod are on the same horizontal line.

[0009] In the above technical solution, the controller starts the deceleration drive motor to drive the first transmission screw to rotate inside the guide frame plate. The threaded sleeve slider drives the linkage support plate to move the rectangular frame linkage plate to the right. The rectangular frame linkage plate drives the four linkage support rods to slide to the right along the inside of the sleeve hole block. The linkage support rods drive the pressing docking sleeve block to make the sealing sleeve plate move closer to the sleeve hole block. The sealing sleeve plate drives the two guide rods to be inserted into the guide positioning hole and the docking hole respectively to form a positioning docking.

[0010] Preferably, the linkage extrusion assembly includes a material hole installed inside the pigment pipe, a piston sleeve provided on one side of the material hole, a support block fixedly connected to the inner wall of the piston sleeve, a support linkage disc and a grip ring arranged sequentially from right to left on one side of the piston sleeve, a grip groove embedded in the outer wall of the grip ring, a scraper spring fixedly connected to the other side of the piston sleeve near its edge, a plurality of arc-shaped connecting spring strips fixedly connected in a circular pattern at equal intervals on the inner wall of the scraper spring strip, an arc-shaped spring strip fixedly connected to the piston sleeve, a scraping tip ring fixedly connected to one side of the scraper spring strip, the grip ring and the piston sleeve both fixedly connected to the support linkage disc, the piston sleeve is made of silicone material, and the vertical cross-sectional area of ​​one side of the scraping tip ring is smaller than the vertical cross-sectional area of ​​the other side.

[0011] In the above technical solution, a color pigment is present inside the material hole. Another color pigment is then poured into the cavity inside the extrusion mating sleeve block, generating extrusion pressure. The gripping ring drives the piston sleeve to move along the inside of the metal mating block. The piston sleeve drives the scraper spring to move the scraping tip ring to the right. The scraping tip ring slides along the inner wall of the metal mating block to the inner wall of the pigment channel, where a residual color pigment is left. Under the action of extrusion pressure, the residual color pigment on the inner wall of the pigment channel is quickly scraped away. When the scraper spring moves to the arc-shaped curved part of the material hole, the scraper spring is subjected to extrusion pressure, which drives the scraping tip ring to move. The arc-shaped spring strip driven by the scraper spring bends on the arc-shaped connecting spring strip, and the piston sleeve can also achieve bending deformation, smoothly moving to the arc-shaped position on the inner wall of the material hole to remove the residual color pigment.

[0012] Preferably, the flow control and temperature regulation assembly includes a support sleeve block installed inside the first constant temperature water inlet, and a first inlet temperature sensor for water temperature sensing is fixedly connected to the inner wall of the support sleeve block. A support plate is fixedly connected to the inner wall of the second constant temperature water inlet, and a second inlet temperature sensor is fixedly connected to the inner wall of the support plate. An outlet connecting pipe is welded to the top of the outlet pipe, and a guide support frame plate is fixedly connected to the inner wall of the outlet connecting pipe. A second transmission screw is rotatably connected to the inner wall of the guide support frame plate. A waterproof reduction motor is fixedly connected to the guide support frame plate at one end of the second transmission screw. A threaded sleeve support block is slidably connected to the guide support frame plate on the outer wall of the second transmission screw. An outlet temperature sensor is embedded and fixedly connected to the bottom end of the threaded sleeve support block. A pump is threadedly connected to the top of the outlet connecting pipe, and a controller is fixedly connected to one side of the outlet pipe. The outer wall of the second transmission screw is threadedly connected to the inner wall of the threaded sleeve support block, and both the second transmission screw and the threaded sleeve support block are made of stainless steel.

[0013] In the above technical solution, the first inlet temperature sensor can sense the temperature of the first constant temperature water inlet as 50 degrees Celsius. When the second inlet temperature sensor senses the water temperature as 50 degrees Celsius, the water enters the second spiral water pipe through the first constant temperature water inlet and collects in the outlet pipe. The water inside the second constant temperature water inlet enters its interior through the first spiral water pipe, which can control the temperature of the pigment that needs to be discharged from the pigment pipe, preventing the pigment from solidifying on the inner wall of the pigment pipe. At the same time, after the water temperature drops, the temperature is sensed by the outlet temperature sensor. Simultaneously, the waterproof reduction motor inside the water body drives the second transmission screw to rotate forward and backward. The threaded sleeve support block drives the outlet temperature sensor to move back and forth. The outlet temperature sensor achieves uniform sensing of the water temperature inside the outlet connecting pipe. When the temperature is below 40 degrees Celsius, the controller starts the pump, so that the water inside the first spiral water pipe and the second spiral water pipe flows rapidly to control the temperature of the outside of the pigment pipe to the range of 40-50 degrees Celsius, maintaining uniform water pressure flow.

[0014] The present invention has the following advantages:

[0015] 1. This invention employs a replacement docking mechanism that drives a reduction drive motor to rotate a first transmission screw inside a guide frame plate. The first transmission screw drives a threaded sleeve slider to slide to the right along the inside of the guide frame plate under the action of the thread. A rectangular frame linkage plate drives four linkage rods to slide to the right along the inside of the sleeve hole block. A sealing sleeve plate drives two guide rods to be inserted into the guide positioning hole and the docking hole respectively to form a positioning docking. After the distance sensor senses the set value on the controller, the controller stops the reduction drive motor. When changing the colorant, the piston sleeve can be quickly docked into the metal docking block, and the colorant pipe and the extrusion docking sleeve block complete the docking and feeding. Other colors can be used to extrude the rubber colorant inside the original flow channel, eliminating the need for multiple extrusions and requiring only one extrusion. This thoroughly cleans the stubborn colorant and effectively improves the efficiency of colorant replacement.

[0016] 2. This invention allows another color pigment to be injected into the cavity inside the extrusion docking sleeve block by changing the docking mechanism, generating extrusion pressure. The gripping ring drives the piston sleeve to move along the inside of the metal docking block. The support block supports the inner wall of the piston sleeve. The piston sleeve drives the scraper spring to move the scraping tip ring to the right. When the scraper spring moves to the arc-shaped curved part of the material hole, the scraper spring is subjected to extrusion pressure, which drives the scraping tip ring to move. The arc-shaped connecting spring is bent and deformed inside the piston sleeve, which can move and scrape away the residual color pigment at the arc-shaped position of the inner wall of the material hole. The close linkage cleaning and replacement of the pigment can not only avoid the residue of other colors pigment, but also improve the pigment replacement efficiency.

[0017] 3. This invention utilizes a flow control and temperature regulation component to enable a first inlet temperature sensor to sense the temperature of the first constant temperature water inlet, and a second inlet temperature sensor to sense the temperature of the water inside the second constant temperature water inlet. The water enters the second spiral water pipe through the first constant temperature water inlet and collects in the outlet pipe. The water inside the second constant temperature water inlet enters its interior through the first spiral water pipe, and the outlet temperature sensor then uniformly senses the temperature of the water inside the outlet connecting pipe. If the temperature is too low, the controller starts the pump, causing the water inside the first and second spiral water pipes to flow rapidly and control the temperature of the pigment pipe to the range set by the controller. The double spiral pipe maintains the internal temperature of the pigment pipe within the specified material replacement range, thereby preventing the replaced pigment from solidifying and becoming difficult to discharge, resulting in faster pigment discharge and effectively improving pigment replacement efficiency.

[0018] Through the interaction of the above-mentioned multiple technical effects, firstly, after the piston sleeve is connected to the inside of the metal docking block, the colorant pipe and the extrusion docking block complete the docking and material supply. Then, the arc-shaped connecting spring is used to bend and deform inside the piston sleeve to scrape and clean. Finally, the double spiral pipe keeps the internal temperature of the colorant pipe within the specified material replacement range. In summary, when changing colorants, the colorant pipe maintains the specified temperature and the internal docking is quickly completed to scrape and clean, which not only avoids the residue of other colors of colorant, but also effectively improves the efficiency of colorant replacement. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1 is a schematic diagram of the overall structure of a cold runner device for quick color change according to the present invention;

[0022] Figure 2 is a bottom view of the cold runner device for quick color change according to the present invention.

[0023] Figure 3 is a partial structural diagram of the connection between the sleeve hole block and the linkage rod of the present invention.

[0024] Figure 4 is a side view of the connection between the socket block and the metal mating block of the present invention.

[0025] Figure 5 is a partial structural diagram of the connection between the first transmission screw and the reduction drive motor of the present invention.

[0026] Figure 6 is a schematic diagram of a partial cut-off structure at the connection between the distance sensor and the socket block of the present invention.

[0027] Figure 7 is a partial structural diagram of the vertical cross-section of the colorant pipe of the present invention;

[0028] Figure 8 is an enlarged structural schematic diagram of point A in Figure 7 of the present invention;

[0029] Figure 9 is a schematic diagram of the main structure of the connection between the support sleeve and the second inlet temperature sensor of the present invention.

[0030] Figure 10 is a partial structural schematic diagram of the cross-section of the liquid outlet connecting pipe of the present invention, viewed from below.

[0031] In the diagram: 1. Pigment pipe; 2. Connecting hole block; 3. First constant temperature water inlet; 4. Second constant temperature water inlet; 5. First spiral water pipe; 6. Second spiral water pipe; 7. Water outlet pipe; 8. Lower discharge port; 9. Metal connecting block; 10. Linkage support rod; 11. Sealing sleeve plate; 12. Extrusion connecting sleeve block; 13. Guide rod; 14. Rectangular frame linkage plate; 15. Linkage support plate; 16. Threaded connecting slider; 17. First transmission screw; 18. Guide frame plate; 19. Gear drive motor; 20. Distance sensor; 21. Connecting hole position; 22. Guide positioning. 23. Feed hole; 24. Piston sleeve; 25. Support block; 26. Support linkage disc; 27. Grip ring; 28. Grip groove; 29. ​​Scraper spring; 30. Arc-shaped spring bar; 31. Arc-shaped connecting spring bar; 32. Scraper pointed ring; 33. Support sleeve block; 34. First inlet temperature sensor; 35. Support sleeve plate; 36. Second inlet temperature sensor; 37. Liquid outlet connecting pipe; 38. Guide support frame plate; 39. Second transmission screw; 40. Threaded sleeve support block; 41. Liquid outlet temperature sensor; 42. Waterproof geared motor; 43. Pump; 44. Controller. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0033] Example 1:

[0034] As shown in Figures 1-2, a cold runner device for quick colorant replacement includes a colorant pipe 1, a socket block 2 fixedly connected to the outer wall of the colorant pipe 1, and a temperature-stabilizing material replacement mechanism provided in front of the socket block 2.

[0035] The temperature-stabilized material changing mechanism includes a first constant temperature water inlet 3 located in front of the socket block 2, and a second constant temperature water inlet 4 located behind the socket block 2. A first spiral water pipe 5 and a second spiral water pipe 6 are fixedly connected to one side of the socket block 2. A water outlet pipe 7 is connected to one end of the first spiral water pipe 5, and a lower discharge port 8 is threadedly connected to the bottom end of the water outlet pipe 7. A replacement docking mechanism is provided on the other side of the socket block 2. A linkage extrusion assembly is installed inside the colorant pipe 1. A flow control and temperature adjustment assembly is installed inside the first constant temperature water inlet 3.

[0036] In some embodiments, as shown in Figures 1-2, the second spiral water pipe 6 and the first spiral water pipe 5 are respectively connected to the first constant temperature water inlet 3 and the second constant temperature water inlet 4 in a one-to-one correspondence. The inner wall of the colorant pipe 1 is polished. In some embodiments, as shown in the figures, the first spiral water pipe 5 and the second spiral water pipe 6 are both fixedly connected to and communicate with the water outlet pipe 7. The pitch of the first spiral water pipe 5 and the second spiral water pipe 6 is set to 25 cm.

[0037] In this embodiment, the colorant to be replaced is pressurized and injected into the metal docking block 9, and then enters the colorant pipe 1 through the metal docking block 9. Temperature-controlled water is then injected into the second constant-temperature water inlet 4 and the first constant-temperature water inlet 3. Water enters the second spiral water pipe 6 through the first constant-temperature water inlet 3, while water can be injected into the first spiral water pipe 5 through the second constant-temperature water inlet 4. The temperature inside the colorant pipe 1 is controlled within the replacement temperature range. The water in the first spiral water pipe 5 and the water in the second spiral water pipe 6 are transported to the outlet pipe 7 and discharged externally, completing the colorant replacement operation. To ensure that the rubber is kept at a usable processing temperature during the colorant replacement process, the processing conditions for rubber products are 40-50℃ under normal pressure. Outside this temperature range, the strength and ductility of the rubber cannot meet the standard requirements of the processed products. Therefore, a dual-flow circulating spiral water channel is used around the outer surface of the material channel. Maintaining the rubber at a consistently processable temperature of 40-50℃ is crucial. Temperatures below this range result in slow injection, high vulcanization time costs, and low production efficiency. Conversely, excessively high temperatures cause the rubber to lose its normal active properties, rendering the rubber soles unusable and requiring scrapping, leading to significant material waste. This solution enables temperature-controlled 3D printing of the rubber injection channel, as well as surround cooling channels around the injection channel and arc-shaped channels for the colorant pipe, reducing injection pressure.

[0038] Example 2:

[0039] As shown in Figure 3-10, a cold runner device for quick color change is provided. The device is equipped with a replacement docking mechanism, a linkage extrusion component, and a flow control and temperature adjustment component. The arrangement of each mechanism and component can maintain the color pipe 1 at a specified temperature and complete the scraping and cleaning of the inside by quick docking during color change. This not only avoids the residue of other colors of color, but also effectively improves the efficiency of color change. The specific structural settings of each mechanism and component are as follows.

[0040] In some embodiments, as shown in Figures 3-4, the temperature-stabilized material changing mechanism includes a first constant temperature water inlet 3 opened in front of the socket block 2, and a second constant temperature water inlet 4 opened behind the socket block 2. A first spiral water pipe 5 and a second spiral water pipe 6 are fixedly connected to one side of the socket block 2. A water outlet pipe 7 is connected to one end of the first spiral water pipe 5. A lower discharge port 8 is threadedly connected to the bottom end of the water outlet pipe 7. A replacement docking mechanism is provided on the other side of the socket block 2. A linkage extrusion assembly is installed inside the colorant pipe 1. A flow control and temperature adjustment assembly is installed inside the first constant temperature water inlet 3.

[0041] In some embodiments, as shown in Figures 3-6, the replacement docking mechanism includes multiple linkage rods 10 disposed on the other side of the socket block 2. A sealing sleeve plate 11 is fixedly connected to the outer wall of the linkage rod 10 near one end. A pressing docking sleeve block 12 is bonded and fixed to one side of the sealing sleeve plate 11. Two guide rods 13 are installed on the other side of the sealing sleeve plate 11 near its middle position. A rectangular frame linkage plate 14 is fixedly connected to the other end of the linkage rod 10. A linkage support plate 15 is welded to one side of the rectangular frame linkage plate 14 near its top position. A threaded socket slider 16 is welded to the bottom end of the linkage support plate 15. A first transmission screw 17 is threadedly connected to the inner wall of the threaded socket slider 16. A guide frame plate 18 is installed on the outer wall of the threaded socket slider 16. One end of the first transmission screw 17 extends to the guide frame plate 18. A geared drive motor 19 is coaxially connected to the outer wall of the frame plate 18, and the geared drive motor 19 is fixedly connected to the guide frame plate 18. A distance sensor 20 is fixedly connected inside the socket block 2 and located on one side of the linkage rod 10. A metal docking block 9 is inserted inside the color material pipe 1 and located below the distance sensor 20. A docking hole 21 and a guide positioning hole 22 are sequentially opened from front to back on one side of the metal docking block 9. Multiple linkage rods 10 are arranged in a rectangular equidistant distribution, and multiple linkage rods 10 are slidably connected to the socket block 2. The guide rod 13 is movably inserted into the guide positioning hole 22. The vertical cross-sectional area of ​​one end of the guide rod 13 is larger than the vertical cross-sectional area of ​​the other end. The center point of the guide positioning hole 22 and the center point of the guide rod 13 are on the same horizontal line.

[0042] In some embodiments, as shown in Figures 6-8, the linkage extrusion assembly includes a material hole 23 installed inside the colorant pipe 1. A piston sleeve 24 is provided on one side of the material hole 23. A support block 25 is fixedly connected to the inner wall of the piston sleeve 24. A support linkage disc 26 and a grip ring 27 are provided sequentially from right to left on one side of the piston sleeve 24. A grip groove 28 is embedded in the outer wall of the grip ring 27. A scraper spring 29 is fixedly connected to the other side of the piston sleeve 24 near its edge. Multiple arc-shaped connecting spring strips 31 are fixedly connected in a circular pattern at equal intervals on the inner wall of the scraper spring 29. Arc-shaped spring strips 30 are fixedly connected between the arc-shaped connecting spring strips 31 and the piston sleeve 24. A scraping tip ring 32 is fixedly connected to one side of the scraper spring 29. Both the grip ring 27 and the piston sleeve 24 are fixedly connected to the support linkage disc 26. The piston sleeve 24 is made of silicone material. The vertical cross-sectional area of ​​one side of the scraping tip ring 32 is smaller than the vertical cross-sectional area of ​​the other side.

[0043] In some embodiments, as shown in Figures 6-10, the flow control and temperature regulation assembly includes a support sleeve 33 installed inside the first constant temperature water inlet 3, and a first inlet temperature sensor 34 for water temperature sensing is fixedly connected to the inner wall of the support sleeve 33. A support plate 35 is fixedly connected to the inner wall of the second constant temperature water inlet 4, and a second inlet temperature sensor 36 is fixedly connected to the inner wall of the support plate 35. An outlet pipe 37 is welded to the top of the water outlet pipe 7, and a guide frame plate 38 is fixedly connected to the inner wall of the outlet pipe 37. A second transmission screw 3 is rotatably connected to the inner wall of the guide frame plate 38. 9. A waterproof geared motor 42 is fixedly connected to the guide support plate 38 at one end of the second transmission screw 39. A threaded sleeve support block 40 is slidably connected to the guide support plate 38 on the outer wall of the second transmission screw 39. An outlet temperature sensor 41 is embedded and fixedly connected at the bottom end of the threaded sleeve support block 40. A pump 43 is threadedly connected to the top end of the outlet connecting pipe 37. A controller 44 is fixedly connected to one side of the outlet pipe 7. The outer wall of the second transmission screw 39 is threadedly connected to the inner wall of the threaded sleeve support block 40. Both the second transmission screw 39 and the threaded sleeve support block 40 are made of stainless steel.

[0044] The process of using the cold runner device for quick colorant replacement of the present invention is as follows.

[0045] Firstly, during rapid docking, the hand grips the groove 28 on the outer wall of the grip ring 27. After moving the grip ring 27, the piston sleeve 24 is inserted into the inner wall of the metal docking block 9. The controller 44 starts the reduction drive motor 19, which drives the first transmission screw 17 to rotate inside the guide frame plate 18. The first transmission screw 17 drives the threaded sleeve slider 16 to slide to the right along the inside of the guide frame plate 18 under the action of the thread. At the same time, the threaded sleeve slider 16 drives the linkage support plate 15 to move the rectangular frame linkage plate 14 to the right. The rectangular frame linkage plate 14 drives the four linkage support rods 10 to slide to the right along the inside of the socket block 2. The linkage support rods 10 drive the pressing docking sleeve block 12 to move the sealing sleeve plate 11 closer to the socket block 2. At the same time, the sealing sleeve plate 11 drives the two guide rods 13 to be inserted into the guide positioning hole 22 and the docking hole 21 respectively to form a positioning docking. The sealing sleeve plate 11 is pressed onto the distance sensor 20. After the distance sensor 20 senses the set value on the controller 44, the controller 44 stops the reduction drive motor 19.

[0046] Secondly, during temperature control and flow regulation, the first constant temperature water inlet 3 is connected to the factory's water inlet pipe, maintaining the inlet temperature at 50 degrees Celsius. The first inlet temperature sensor 34 is supported by a support sleeve 33, which senses the temperature of the first constant temperature water inlet 3 at 50 degrees Celsius. Meanwhile, the second constant temperature water inlet 4 is supported by a support sleeve 35, which supports the second inlet temperature sensor 36. When the second inlet temperature sensor 36 senses a water temperature of 50 degrees Celsius, the water enters the second spiral water pipe 6 through the first constant temperature water inlet 3 and collects in the outlet pipe 7. The water inside the second constant temperature water inlet 4 then enters through the first spiral water pipe 5, thus controlling the temperature of the pigment to be discharged from the pigment pipe 1, preventing the pigment from solidifying on the inner wall of the pigment pipe 1. Simultaneously, as the water temperature drops, the temperature is monitored by the outlet temperature sensor 41. The sensor simultaneously activates the waterproof reduction motor 42 inside the water body, driving the second transmission screw 39 to rotate forward and backward. The second transmission screw 39 drives the threaded sleeve support block 40 to move back and forth along the inside of the guide support frame plate 38. The threaded sleeve support block 40 drives the outlet temperature sensor 41 to move back and forth. The outlet temperature sensor 41 uniformly senses the water temperature inside the outlet connecting pipe 37. When the temperature is higher than 40 degrees Celsius, there is no need to start the pump 43 through the controller 44. When the temperature is lower than 40 degrees Celsius, the controller 44 starts the pump 43, causing the water inside the first spiral water pipe 5 and the second spiral water pipe 6 to flow rapidly and control the temperature of the outside of the pigment pipe 1 to the range of 40-50 degrees Celsius, preventing the pigment inside the pigment pipe 1 from solidifying. When the temperature sensed by the outlet temperature sensor 41 returns to 40-50 degrees Celsius, the controller 44 stops the pump 43 from accelerating, maintaining a uniform water supply and flow.

[0047] Then, when changing the colorant, one colorant will be present inside the material hole 23. Another colorant is then poured into the cavity inside the extrusion coupling sleeve block 12, generating extrusion pressure. The extrusion machine then extrudes and conveys the other colorant. The other colorant presses against the gripping ring 27 along the extrusion coupling sleeve block 12. The gripping ring 27 drives the piston sleeve 24 to move along the inside of the metal coupling block 9. The support block 25 supports the inner wall of the piston sleeve 24. The piston sleeve 24 drives the scraper spring 29 to move the scraping tip ring 32 to the right. The scraping tip ring 32 slides along the inner wall of the metal coupling block 9 to the inner wall of the colorant pipe 1, where a remaining colorant is rapidly extruded under the extrusion pressure. The residual color pigment on the inner wall of pipe 1 is scraped away. When the scraper spring 29 moves to the arc-shaped bend of the material hole 23, the scraper spring 29 is squeezed and will drive the scraper tip ring 32 to move. The arc-shaped spring strip 30 driven by the scraper spring 29 bends on the arc-shaped connecting spring strip 31. At the same time, the arc-shaped connecting spring strip 31 bends and deforms on the piston sleeve 24, and the piston sleeve 24 can also bend and deform. This smoothly moves the arc-shaped position on the inner wall of the material hole 23 to remove the residual color pigment. Another color pigment will fill the inside of the color pigment pipe 1 and continue to supply material. This allows for quick replacement of color pigment and quick cleaning of residual color pigment inside the color pigment pipe 1.

[0048] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A cold runner device for quick colorant replacement, comprising a colorant pipe (1), wherein a socket block (2) is fixedly connected to the outer wall of the colorant pipe (1), characterized in that: A temperature-stabilizing material exchange mechanism is provided in front of the socket block (2); the temperature-stabilizing material exchange mechanism includes a first constant temperature water inlet (3) in front of the socket block (2), and a second constant temperature water inlet (4) is provided behind the socket block (2). A first spiral water pipe (5) and a second spiral water pipe (6) are fixedly connected to one side of the socket block (2). A water outlet pipe (7) is connected to one end of the first spiral water pipe (5). A lower discharge port (8) is threadedly connected to the bottom end of the water outlet pipe (7). A replacement docking mechanism is provided on the other side of the socket block (2); a linkage extrusion assembly is installed inside the colorant pipe (1). The linkage extrusion assembly includes a material hole (23) installed inside the colorant pipe (1). A material hole (23) is provided on one side of the material hole (23). A piston sleeve (24) is provided, and a support block (25) is fixedly connected to the inner wall of the piston sleeve (24). A support linkage disc (26) and a grip ring (27) are provided sequentially from right to left on one side of the piston sleeve (24). A grip groove (28) is embedded in the outer wall of the grip ring (27). A scraper spring (29) is fixedly connected to the other side of the piston sleeve (24) near its edge. Multiple arc-shaped connecting spring strips (31) are fixedly connected in a circular pattern on the inner wall of the scraper spring (29). An arc-shaped spring strip (30) is fixedly connected between the arc-shaped connecting spring strip (31) and the piston sleeve (24). A scraping tip ring (32) is fixedly connected to one side of the scraper spring (29). A flow control and temperature adjustment component is installed inside the first constant temperature water inlet (3).

2. The cold runner device for quick colorant replacement as described in claim 1, characterized in that: The second spiral water pipe (6) and the first spiral water pipe (5) are respectively connected to the first constant temperature water inlet (3) and the second constant temperature water inlet (4) in a one-to-one correspondence. The inner wall of the pigment pipe (1) is polished.

3. The cold runner device for quick colorant replacement as described in claim 1, characterized in that: The first spiral water pipe (5) and the second spiral water pipe (6) are both fixedly connected to the water outlet pipe (7) and are in communication. The pitch of the first spiral water pipe (5) and the second spiral water pipe (6) is set to 25 cm.

4. The cold runner device for quick colorant replacement as described in claim 1, characterized in that: The replacement docking mechanism includes multiple linkage rods (10) arranged on the other side of the socket block (2); a sealing sleeve plate (11) is fixedly connected to the outer wall of the linkage rod (10) near one end, and a pressing docking sleeve block (12) is bonded and fixed to one side of the sealing sleeve plate (11); two guide rods (13) are installed on the other side of the sealing sleeve plate (11) near its middle position; a rectangular frame linkage plate (14) is fixedly connected to the other end of the linkage rod (10); a linkage support plate (15) is welded to one side of the rectangular frame linkage plate (14) near its top position; a threaded socket slider (16) is welded to the bottom end of the linkage support plate (15); and the inner wall of the threaded socket slider (16) is threaded. A first transmission screw (17) is connected to the threaded connection. A guide frame plate (18) is installed on the outer wall of the threaded sleeve slider (16). One end of the first transmission screw (17) extends to the outer wall of the guide frame plate (18) and is coaxially connected to a reduction drive motor (19). The reduction drive motor (19) is fixedly connected to the guide frame plate (18). A distance sensor (20) is fixedly connected inside the sleeve hole block (2) and located on one side of the linkage support rod (10). A metal docking block (9) is inserted inside the color material pipe (1) and located below the distance sensor (20). A docking hole (21) and a guide positioning hole (22) are sequentially opened from front to back on one side of the metal docking block (9).

5. The cold runner device for quick colorant replacement as described in claim 4, characterized in that: Multiple linkage rods (10) are arranged in a rectangular equidistant distribution, and all multiple linkage rods (10) are slidably connected to the sleeve hole block (2).

6. The cold runner device for quick colorant replacement as described in claim 4, characterized in that: The guide rod (13) is movably inserted into the guide positioning hole (22). The vertical cross-sectional area of ​​one end of the guide rod (13) is greater than the vertical cross-sectional area of ​​the other end. The center point of the guide positioning hole (22) and the center point of the guide rod (13) are on the same horizontal line.

7. The cold runner device for quick colorant replacement as described in claim 1, characterized in that: The grip ring (27) and piston sleeve (24) are both fixedly connected to the support linkage disc (26). The piston sleeve (24) is made of silicone material. The vertical cross-sectional area of ​​one side of the scraping tip ring (32) is smaller than the vertical cross-sectional area of ​​the other side.

8. The cold runner device for quick colorant replacement as described in claim 1, characterized in that: The flow control and temperature regulation assembly includes a support sleeve (33) installed inside the first constant temperature water inlet (3), and a first inlet temperature sensor (34) for water temperature sensing is fixedly connected to the inner wall of the support sleeve (33). A support plate (35) is fixedly connected to the inner wall of the second constant temperature water inlet (4), and a second inlet temperature sensor (36) is fixedly connected to the inner wall of the support plate (35). An outlet pipe (37) is welded to the top of the water outlet pipe (7), and a guide support frame plate (38) is fixedly connected to the inner wall of the outlet pipe (37). The inner wall of the frame plate (38) is rotatably connected to a second transmission screw (39). At one end of the second transmission screw (39), a waterproof geared motor (42) is fixedly connected to the guide support frame plate (38). The outer wall of the second transmission screw (39) is provided with a threaded sleeve support block (40) that is slidably connected to the guide support frame plate (38). The bottom end of the threaded sleeve support block (40) is embedded and fixedly connected to an outlet temperature sensor (41). The top end of the outlet connecting pipe (37) is threadedly connected to a pump (43), and a controller (44) is fixedly connected to one side of the outlet pipe (7).

9. The cold runner device for quick colorant replacement as described in claim 8, characterized in that: The outer wall of the second transmission screw (39) is threadedly connected to the inner wall of the threaded sleeve support block (40), and both the second transmission screw (39) and the threaded sleeve support block (40) are made of stainless steel.

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