A multi-color multi-cavity injection molding system and partitioned injection molding method thereof

Abstract

The present invention relates to the field of injection molding technology, specifically to a multi-color and multi-cavity injection molding system and a partitioned injection molding method thereof, comprising a frame, a displacement mechanism installed on the upper part of the frame, a sub-mold installed at one end of the displacement mechanism, an injection molding machine slidably installed at one end of the displacement mechanism, a fitting rail provided in the middle of the injection molding machine, a material conveying assembly movably installed on the inner side of the fitting rail, the material conveying assembly comprising an injection molding channel tube movably installed on the inner side of the fitting rail, and a feed hopper fixedly installed at one end of the injection molding channel tube, one end of the injection molding channel tube being fixedly connected to a docking assembly, an injection molding sub-hopper movably provided on the outside of the injection molding machine, an injection molding head installed at one end of the injection molding sub-hopper, a cleaning assembly fixedly connected to the upper surface of the injection molding machine, which is beneficial to cleaning the residual liquid adhered to and solidified in the molten injection molding channel, and convenient for assembling and disassembling its components, thereby improving the injection molding quality.

Description

Technical Field

[0001] The present invention relates to the field of injection molding technology, in particular to a multi-color multi-cavity injection molding system and a zoned injection molding method thereof. Background Art

[0002] Injection molding is one of the most common production technologies used by plastics manufacturers in Hong Kong. Plastic injection molding technology has developed rapidly in recent years, with one development trend being the use of gas-assisted injection molding systems to improve product quality and cost-effectiveness. There are many different types of injection molding systems, including gas-assisted injection systems, FLYSET hot runner injection systems, and preform injection systems.

[0003] Currently, the existing multi-color injection molding system has the following problems during operation: In actual operation, when pushing the hot melt adhesive into the conveying channel, the hot melt material delivered last time can only be simply flushed when the equipment is shut down and restarted. There may still be stubborn molten adhesive solidification in the hot melt conveying channel. During cleaning, due to the small inner diameter of the injection port, it is very easy to cause clogging of the injection head, affecting normal injection conveying and resulting in incomplete injection molded parts;

[0004] Therefore, those skilled in the art provide a multi-color and multi-cavity injection molding system and a zoned injection molding method thereof to solve the problems raised in the above background technology. Summary of the Invention

[0005] In response to the shortcomings of the prior art, the present invention provides a multi-color multi-cavity injection molding system and a zoned injection molding method thereof, which solves the following problems: in actual operation, after the hot melt adhesive is pushed through the conveying channel of the existing injection molding equipment, the hot melt material delivered last time can only be simply flushed when the equipment is shut down and restarted. There may still be relatively stubborn molten adhesive solidification in the hot melt conveying channel. During cleaning, due to the small inner diameter of the injection port, it is very easy to cause clogging of the injection head, affecting normal injection molding and conveying, resulting in incomplete injection molded parts.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The technical solution adopted by the present invention to solve its technical problem is: a multi-color multi-cavity injection molding system and a partitioned injection molding method thereof, comprising a frame, a displacement mechanism is installed on the upper part of the frame, a sub-mold is installed at one end of the displacement mechanism, an injection molding machine is slidably installed at one end of the displacement mechanism, a fitting rail is opened in the middle of the injection molding machine, a conveying material assembly is movably installed on the inner side of the fitting rail, the conveying material assembly includes an injection molding channel tube movably installed on the inner side of the fitting rail, and a feed hopper fixedly installed at one end of the injection molding channel tube, one end of the injection molding channel tube is fixedly connected to It is connected to a docking component, and the external movably provided with an injection molding hopper of the injection molding machine, one end of the injection molding hopper is installed with an injection molding head, the upper surface of the injection molding machine is fixedly connected with a cleaning component, the outer surface of the injection molding hopper is fixedly installed with a protection component, the outer surface of the injection molding hopper is installed with an adjustment component, one end of the injection molding channel tube is fixedly installed with a driving motor, the interior of the injection molding channel tube is rotatably installed with a rotating shaft, the outer surface of the rotating shaft is fixedly installed with a conveying impeller, and one end of the rotating shaft passes through the injection molding channel tube and is fixedly connected to the output end of the driving motor.

[0008] Preferably, the cleaning assembly includes a cleaning rod arranged outside the injection molding machine, and a sleeve fixedly mounted on the outer surface of the cleaning rod, the outer surface of the sleeve is annularly and equidistantly mounted with multiple scrapers, and the outer surface of the cleaning rod is movably mounted with a covering disk located above the multiple scrapers.

[0009] Preferably, the protection component includes a plurality of mounting brackets annularly fixedly connected to the outer surface of the injection molding hopper, and an opening and closing groove opened in the middle of the mounting bracket, a limiting rod is provided in the inner middle part of the opening and closing groove, the outer surface of the limiting rod is slidably fitted with a slider, the outer surface of the limiting rod and both sides of the slider are fitted with springs, the bottom end of the slider is fixedly connected to a bracket, the corresponding ends of the plurality of brackets are commonly connected to a sealing sleeve, and the upper surface of the mounting bracket is fixedly connected to a linkage component.

[0010] Preferably, the linkage assembly includes a mounting base fixedly connected to one end of the upper surface of the mounting frame, and a pressure strip rotatably connected to one end of the mounting base, the upper surface of the pressure strip is provided with a limiting groove, the inner side of the limiting groove is slidingly provided with a pressure plate, the upper end of the mounting base is rotatably connected to a swing plate used in conjunction with the pressure plate, the bottom end of the pressure strip is rotatably connected to a driven rod, and the driven rod is rotatably connected to the slider.

[0011] Preferably, a sensor is provided at one end of the mounting bracket, an end plate is fixedly connected to the other end of the bracket, and an inductor corresponding to the sensor is installed on the upper surface of the end plate.

[0012] Preferably, the docking assembly includes a docking joint fixedly connected to one end of the injection molding channel tube, and a docking opening is provided on the inner side of the docking joint, and the docking opening is plugged and matched with the injection molding distribution hopper.

[0013] Preferably, an L-shaped frame is fixedly connected to the upper surface of the injection molding machine, a second hydraulic push rod is fixedly installed on the inner top end of the L-shaped frame, the protruding end of the second hydraulic push rod is fixedly connected to a micro motor, and the output end of the micro motor is fixedly connected to the cleaning rod.

[0014] Preferably, the outer surface of the injection molding channel tube is fixedly sleeved with a sealing ring, and movable racks are movably provided on both sides of the sealing ring, and the outer surface of the injection molding channel tube is slidably provided with a limiting plate that is fixedly connected to the movable rack, and one end of each of the two movable racks is fixedly sleeved with a limiting block, and the bottom end of the injection molding channel tube is installed with a first hydraulic push rod, and the protruding end of the first hydraulic push rod is fixedly connected to the limiting plate, and one end of the sealing ring is annularly fixedly connected with a plurality of docking strips, and the docking strips are used in conjunction with the swing plate.

[0015] Preferably, the adjustment assembly includes two rotators fixedly mounted on the outer surface of the injection molding hopper, and the two rotators are respectively fixedly connected to the movable frame.

[0016] The present invention also provides a partitioned injection molding method for a multi-color multi-cavity injection molding system, which specifically includes the following steps:

[0017] S1: First, put the rubber material from the feed hopper into the injection channel tube, and control the drive motor to turn on from the external controller. After the drive motor is running, it drives the rotating shaft to rotate. After the rotating shaft rotates, it drives the conveying impeller to rotate to convey the molten rubber material. The conveyed material enters the injection molding hopper, and then enters the injection head and is conveyed to the injection mold. After the injection molding is completed, the position of the injection molding hopper is adjusted through the adjustment component to make it a vertical state with the injection head facing downward. Then, the cleaning component is used to clean and scrape off the adhered material on the inner wall of the injection molding hopper.

[0018] S2: After the cleaning is completed, the injection molding hopper is rotated to the starting angle by adjusting the component operation. When the injection molding hopper moves, the linkage component and the protection component are driven to move, and cooperate with the docking component to dock and interfere, thereby sealing the injection molding hopper, the injection molding channel pipe or the docking joint combination.

[0019] Beneficial effects of the present invention:

[0020] (1) The multi-color multi-cavity injection molding system and its zoned injection molding method described in the present invention drive the limiting plate to slide on the surface of the injection molding channel tube after the first hydraulic push rod is operated, and the limiting plate drives the movable frame to slide in the limiting block respectively after the movement, and drives the cleaning rod to move in parallel under the synchronous movement of the two movable frames, and drives the injection molding hopper to slide out from the docking port in the docking joint and separate, and then the external controller opens the cleaning rod and rotates it to a predetermined vertical angle, and the direction of the injection molding head is downward, and the second hydraulic push rod is operated and the extended end pushes the micro motor to move, so as to drive the cleaning rod to descend vertically, and at the same time, driven by the micro motor, drives the cleaning rod to descend and rotate at the same time, and then the cleaning rod gradually enters the injection molding hopper and passes through the injection molding head to push out the residual material inside, and the rotation of the cleaning rod drives the sleeve to rotate, and after the sleeve rotates, it drives the scraper to rotate to scrape off the adhered material on the inner wall of the injection molding hopper, and the cleaning liquid is input into the through holes of the cover plate respectively, which is beneficial to the cleaning and delivery of the injection molding channel and prevents the inner wall rubber material from being adsorbed and agglomerated;

[0021] (2) The multi-color multi-cavity injection molding system and its zoned injection molding method described in the present invention start the movement of the reset adjustment component by the second hydraulic push rod, so that the injection molding hopper rotates to the starting angle, and drives the injection molding hopper to move as the first hydraulic push rod is reset. When the injection molding hopper moves, it drives the linkage component and the protection component to move. When the injection molding hopper gradually enters the docking port, the swing plate also conflicts with the docking strip plate, so that the swing plate pushes the pressure plate to slide in the limiting groove after rotation, thereby driving the pressure strip plate to rotate around the mounting seat. After the pressure strip plate rotates, it drives the driven rod to slide outside the limit rod and compresses the spring on one side in the opening and closing groove, and at the same time drives the bracket to move and push the sealing sleeve into the docking port to seal the docking seam between the injection molding hopper and the docking port. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention from another external perspective;

[0025] Figure 3 This is a schematic diagram of the expanded structure of the docking assembly of the present invention;

[0026] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the cleaning component of the present invention;

[0028] Figure 6This is an enlarged structural diagram of the cleaning component of the present invention;

[0029] Figure 7 It is a schematic diagram of the enlarged structure of the linkage component and the protection component of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the injection molded channel tube in a half-section according to the present invention;

[0031] Figure 9 This is a schematic diagram of the external structure of the injection molded channel tube of the present invention;

[0032] Figure 10 It is a side structural schematic diagram of the present invention.

[0033] In the figure: 1. Injection molding hopper; 2. Frame; 3. Injection molding channel tube; 4. Injection molding head; 5. Sealing ring; 551. Material conveying assembly; 552. Cleaning assembly; 553. Linkage assembly; 554. Protection assembly; 555. Adjustment assembly; 556. Docking assembly; 6. Feed hopper; 7. Drive motor; 8. First hydraulic push rod; 9. Limiting block; 10. Moving frame; 11. Fitting rail; 12. Injection molding machine; 13. Second hydraulic push rod; 14. Sub-mold; 15. Displacement mechanism; 16. Limiting plate; 17. Scraper; 18. Covering plate; 19. L-shaped frame; 20. Micro motor; 21. Cleaning rod; 22. Docking head; 23. Docking port; 24. Docking strip; 25. Sleeve; 26. Pressure plate; 27. Swing plate; 28. Pressure strip; 29. ​​Limiting groove; 30. Follower rod; 31. Sensor; 32. End plate; 33. Slider; 34. Spring; 35. Bracket; 36. Mounting frame; 37. Mounting seat; 38. Rotating shaft; 39. Conveying impeller; 40. Rotator; 41. Sealing sleeve; 42. Opening and closing groove. DETAILED DESCRIPTION

[0034] The embodiments of the present invention provide a multi-color multi-cavity injection molding system and a zoned injection molding method thereof, which solve the problem that, in actual operation of existing injection molding equipment, after the hot melt adhesive is pushed through the conveying channel, the hot melt delivered previously can only be simply flushed when the equipment is shut down and restarted. Stubborn molten adhesive may still solidify in the hot melt conveying channel. During cleaning, the injection head is easily clogged due to the small inner diameter of the injection port, affecting normal injection molding and delivery, resulting in incomplete injection molded parts.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] like Figures 1-10As shown, a multi-color multi-cavity injection molding system and a partitioned injection molding method thereof of the present invention include a frame 2, a displacement mechanism 15 is installed on the upper part of the frame 2, a sub-mold 14 is installed at one end of the displacement mechanism 15, an injection molding machine 12 is slidably installed at one end of the displacement mechanism 15, a fitting rail 11 is provided in the middle of the injection molding machine 12, a conveying material component 551 is movably installed on the inner side of the fitting rail 11, the conveying material component 551 includes an injection molding channel tube 3 movably installed on the inner side of the fitting rail 11, and a feed hopper 6 fixedly installed at one end of the injection molding channel tube 3, one end of the injection molding channel tube 3 is fixedly connected to a docking component 556, an injection molding sub-hopper 1 is movably provided on the outside of the injection molding machine 12, an injection molding head 4 is installed at one end of the injection molding sub-hopper 1, and the upper surface of the injection molding machine 12 is fixedly connected There is a cleaning component 552, a protective component 554 is fixedly installed on the outer surface of the injection molding hopper 1, an adjustment component 555 is installed on the outer surface of the injection molding hopper 1, one end of the injection molding channel tube 3 is fixedly installed with a drive motor 7, a rotating shaft 38 is rotatably installed inside the injection molding channel tube 3, a conveying impeller 39 is fixedly installed on the outer surface of the rotating shaft 38, one end of the rotating shaft 38 passes through the injection molding channel tube 3 and is fixedly connected to the output end of the drive motor 7, the cleaning component 552 includes a cleaning rod 21 arranged on the outside of the injection molding machine 12, and a sleeve 25 fixedly sleeved on the outer surface of the cleaning rod 21, a plurality of scrapers 17 are equidistantly installed on the outer surface of the sleeve 25, a covering plate 18 is movably sleeved on the outer surface of the cleaning rod 21 and located above the plurality of scrapers 17, and the mounting frame 36 is provided with a plurality of scrapers 17. The upper surface is fixedly connected with a linkage component 553, the upper surface of the injection molding machine 12 is fixedly connected with an L-shaped frame 19, the inner top of the L-shaped frame 19 is fixedly installed with a second hydraulic push rod 13, the extended end of the second hydraulic push rod 13 is fixedly connected with a micro motor 20, the output end of the micro motor 20 is fixedly connected to the cleaning rod 21, the outer surface of the injection molding channel tube 3 is fixedly sleeved with a sealing ring 5, and the two sides of the sealing ring 5 are interspersed with movable frames 10. The outer surface of the injection molding channel tube 3 is slidably provided with a limiting plate 16 that is interspersed and fixedly connected with the movable frame 10. One end of the two movable frames 10 is fixedly sleeved with a limiting block 9. The bottom end of the injection molding channel tube 3 is installed with a first hydraulic push rod 8, and the extended end of the first hydraulic push rod 8 is fixedly connected to the limiting plate 16. The sealing ring One end of 5 is annularly fixedly connected with a plurality of docking strips 24, which are used in conjunction with the swing plate 27. The adjustment component 555 includes two rotators 40 fixedly mounted on the outer surface of the injection molding hopper 1. The two rotators 40 are respectively fixedly connected to the mobile frame 10. After the first hydraulic push rod 8 is operated, it drives the limiting plate 16 to slide on the surface of the injection molding channel tube 3. After the limiting plate 16 moves, it drives the mobile frame 10 to slide in the limiting block 9 respectively. Under the synchronous movement of the two mobile frames 10, the rotator 40 is driven to move in parallel. After the cleaning rod rotator 40 moves, it drives the injection molding hopper 1 to slide out of the docking port 23 in the docking head 22 and separate. Then the external controller opens the rotator 40 and rotates it to a predetermined vertical angle. The direction of the injection head 4 is downward.This is beneficial for preparing for component pre-processing operations. The second hydraulic push rod 13 and the micro motor 20 are controlled to open by an external controller. After the second hydraulic push rod 13 is in operation, the extended end pushes the micro motor 20 to move, causing the cleaning rod 21 to descend vertically. At the same time, driven by the micro motor 20, the cleaning rod 21 is driven to rotate while descending. Then, the cleaning rod 21 gradually enters the injection molding hopper 1 and passes through the injection molding head 4 to push out the residual material inside. The rotation of the cleaning rod 21 drives the sleeve 25 to rotate. After the sleeve 25 rotates, it drives the scraper 17 to rotate to scrape off the material adhering to the inner wall of the injection molding hopper 1. The cleaning liquid is respectively input into the through-holes of the cover plate 18, which is beneficial for cleaning and sending out the injection molding channel and preventing the rubber material on the inner wall from being adsorbed and agglomerated.

[0037] Example 2

[0038] On the basis of Example 1, Figure 1 、 Figure 3 、 Figure 7 、 Figure 8 、 Figure 9As shown, the protection component 554 includes a plurality of mounting brackets 36 fixedly connected to the outer surface of the injection molding hopper 1 in an annular manner, and an opening and closing groove 42 opened in the middle of the mounting bracket 36. A limit rod is provided in the middle of the inner side of the opening and closing groove 42. The outer surface of the limit rod is slidably covered with a slider 33. The outer surface of the limit rod and both sides of the slider 33 are covered with springs 34. The bottom end of the slider 33 is fixedly connected to a bracket 35. The corresponding ends of the plurality of brackets 35 are commonly connected to a sealing sleeve 41. The linkage component 553 includes a plurality of mounting brackets 36 fixedly connected to the upper surface of the mounting bracket 36. The mounting seat 37 at one end of the surface, and the pressure strip 28 rotatably connected to one end of the mounting seat 37, the upper surface of the pressure strip 28 is provided with a limiting groove 29, the inner side of the limiting groove 29 is slidably provided with a pressure plate 26, the upper end of the mounting seat 37 is rotatably connected to the swing plate 27 used in conjunction with the pressure plate 26, the bottom end of the pressure strip 28 is rotatably connected to the driven rod 30, the driven rod 30 is rotatably connected to the slider 33, one end of the mounting frame 36 is provided with a sensor 31, the other end of the bracket 35 is fixedly connected to the end plate 32, the upper surface of the end plate 32 A sensor corresponding to the sensor 31 is installed, and the docking assembly 556 includes a docking joint 22 fixedly connected to one end of the injection channel tube 3, and a docking port 23 is opened on the inner side of the docking joint 22. The docking port 23 is plugged and matched with the injection molding hopper 1. The second hydraulic push rod 13 starts to drive the reset adjustment assembly 555 to move, so that the injection molding hopper 1 rotates to the starting angle, and as the first hydraulic push rod 8 resets, the injection molding hopper 1 moves. When the injection molding hopper 1 moves, it drives the linkage assembly 553 and the protection assembly 554 to move. When After the injection molding hopper 1 gradually enters the docking port 23, the swing plate 27 also conflicts with the docking strip 24, so that the swing plate 27 rotates and pushes the pressure plate 26 to slide in the limiting groove 29, thereby driving the pressure strip 28 to rotate around the mounting seat 37. After the pressure strip 28 rotates, it drives the driven rod 30 to slide outside the limit rod and compresses the spring 34 on one side in the opening and closing groove 42, and at the same time drives the bracket 35 to move and push the sealing sleeve 41 into the docking port 23, thereby sealing the docking seam between the injection molding hopper 1 and the docking port 23.

[0039] The embodiment of the present invention further provides a zoned injection molding method for a multi-color multi-cavity injection molding system, the specific working principle of which includes the following steps:

[0040] S1: First, the rubber material is fed from the feed hopper 6 and enters the injection channel tube 3. The drive motor 7 is turned on by the external controller. After the drive motor 7 is running, it drives the rotating shaft 38 to rotate. After the rotating shaft 38 rotates, it drives the conveying impeller 39 to rotate to convey the molten rubber material. The conveyed material enters the injection hopper 1, and then enters the injection head 4 and is conveyed to the injection mold, and the injection molding is completed;

[0041] S2: Then, the switch of the first hydraulic push rod 8 is turned on from the external controller. After the first hydraulic push rod 8 is in operation, it drives the limiting plate 16 to slide on the surface of the injection channel tube 3. After the limiting plate 16 moves, it drives the movable frame 10 to slide in the limiting block 9 respectively. Under the synchronous movement of the two movable frames 10, the rotator 40 is driven to move in parallel. After the cleaning rod rotator 40 moves, it drives the injection hopper 1 to slide out of the docking port 23 in the docking head 22 and separate. Then, the external controller turns on the rotator 40 and rotates it to a predetermined vertical angle. The injection head 4 is directed downward, which is conducive to the preparation of the component pre-processing operation.

[0042] S3: Then, the external controller controls the second hydraulic push rod 13 and the micro motor 20 to open respectively. After the second hydraulic push rod 13 is in operation, the extended end pushes the micro motor 20 to move, so that the cleaning rod 21 is driven to descend vertically. At the same time, the cleaning rod 21 is driven to descend and rotate at the same time under the drive of the micro motor 20. Then, the cleaning rod 21 gradually enters the injection molding hopper 1 and passes through the injection molding head 4 to push out the residual material inside. The rotation of the cleaning rod 21 drives the sleeve 25 to rotate. After the sleeve 25 rotates, it drives the scraper 17 to rotate to scrape off the adhered material on the inner wall of the injection molding hopper 1. The cleaning liquid is respectively input into the through holes of the cover plate 18, which is conducive to cleaning and sending out the injection molding channel to prevent the rubber material on the inner wall from being adsorbed and agglomerated.

[0043] S4: When the cleaning is completed, the protection component 554 is reset, and then the second hydraulic push rod 13 starts to drive the reset adjustment component 555 to move, so that the injection molding sub-hopper 1 rotates to the starting angle, and as the first hydraulic push rod 8 is reset, the injection molding sub-hopper 1 is driven to move. When the injection molding sub-hopper 1 moves, it drives the linkage component 553 and the protection component 554 to move. When the injection molding sub-hopper 1 gradually enters the docking port 23, the swing plate 27 also conflicts with the docking strip plate 24, so that after the swing plate 27 rotates, it pushes the pressure plate 26 to slide in the limiting groove 29, thereby driving the pressure strip plate 28 to rotate around the mounting seat 37. After the pressure strip plate 28 rotates, it drives the driven rod 30 to slide outside the limit rod and compresses the spring 34 on one side in the opening and closing groove 42. At the same time, it drives the bracket 35 to move and pushes the sealing sleeve 41 into the docking port 23, sealing the docking seam between the injection molding sub-hopper 1 and the docking port 23;

[0044] S5: The sensor 31 set on the mounting frame 36 indicates the joint condition of the injection molding hopper 1 and the docking joint 22. When the pressure is unstable, the sealing sleeve 41 drives the bracket 35 to move, and drives the slider 33 and the spring 34 on the other side to compress and move, and at the same time drives the end plate 32 to move, so that the sensor and the sensor 31 are misaligned, thereby transmitting the signal to the display component. After the personnel learn about it, they deal with it in time, which further ensures the operational safety of the injection molding system.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-color multi-cavity injection molding system, characterized by: The invention comprises a frame (2), a displacement mechanism (15) is installed on the upper part of the frame (2), a sub-mold (14) is installed on one end of the displacement mechanism (15), an injection molding machine (12) is slidably installed on one end of the displacement mechanism (15), a fitting rail (11) is provided in the middle of the injection molding machine (12), a conveying material assembly (551) is movably installed on the inner side of the fitting rail (11), and the conveying material assembly (551) comprises an injection molding channel tube (3) movably installed on the inner side of the fitting rail (11), and a fixed A feed hopper (6) is fixedly installed at one end of the injection channel tube (3), one end of the injection channel tube (3) is fixedly connected to a docking assembly (556), an injection molding hopper (1) is movably provided on the outside of the injection molding machine (12), one end of the injection molding hopper (1) is installed with an injection head (4), a cleaning assembly (552) is fixedly connected to the upper surface of the injection molding machine (12), a protective assembly (554) is fixedly installed on the outer surface of the injection molding hopper (1), and the outer surface of the injection molding hopper (1) is installed with a The regulating assembly (555) comprises a driving motor (7) fixedly mounted on one end of the injection molding channel tube (3), a rotating shaft (38) rotatably mounted inside the injection molding channel tube (3), a conveying impeller (39) fixedly mounted on the outer surface of the rotating shaft (38), and one end of the rotating shaft (38) passing through the injection molding channel tube (3) and fixedly connected to the output end of the driving motor (7); the protecting assembly (554) comprises a plurality of mounting brackets (36) annularly fixedly connected to the outer surface of the injection molding hopper (1), and a plurality of mounting brackets (36) provided on the outer surface of the injection molding hopper (1). An opening and closing groove (42) is provided in the middle of the mounting frame (36), a limiting rod is provided in the middle of the inner side of the opening and closing groove (42), a slider (33) is slidably mounted on the outer surface of the limiting rod, springs (34) are mounted on the outer surface of the limiting rod and on both sides of the slider (33), a bracket (35) is fixedly connected to the bottom end of the slider (33), a sealing sleeve (41) is commonly connected to the corresponding ends of a plurality of the brackets (35), and a linkage assembly (553) is fixedly connected to the upper surface of the mounting frame (36); The linkage assembly (553) includes a mounting seat (37) fixedly connected to one end of the upper surface of the mounting frame (36), and a pressure strip (28) rotatably connected to one end of the mounting seat (37), the upper surface of the pressure strip (28) is provided with a limiting groove (29), the inner side of the limiting groove (29) is provided with a pressure plate (26) for sliding, the upper end of the mounting seat (37) is rotatably connected to a swing plate (27) used in conjunction with the pressure plate (26), the bottom end of the pressure strip (28) is rotatably connected to a driven rod (30), and the driven rod (30) is rotatably connected to the slider (33); one end of the mounting frame (36) is provided with a sensor (31), the other end of the bracket (35) is fixedly connected to an end plate (32), and the upper surface of the end plate (32) is provided with a sensor corresponding to the sensor (31).

2. The multi-color multi-cavity injection molding system according to claim 1, characterized in that: The cleaning assembly (552) comprises a cleaning rod (21) arranged outside the injection molding machine (12), and a sleeve (25) fixedly sleeved on the outer surface of the cleaning rod (21); a plurality of scrapers (17) are equidistantly mounted on the outer surface of the sleeve (25); and a covering disk (18) is movably sleeved on the outer surface of the cleaning rod (21) and located above the plurality of scrapers (17).

3. The multi-color multi-cavity injection molding system according to claim 2, characterized in that: The docking assembly (556) includes a docking joint (22) fixedly connected to one end of the injection molding channel tube (3), a docking opening (23) is provided on the inner side of the docking joint (22), and the docking opening (23) is plugged and matched with the injection molding hopper (1).

4. The multi-color multi-cavity injection molding system according to claim 1, characterized in that: The upper surface of the injection molding machine (12) is fixedly connected to an L-shaped frame (19), the inner top end of the L-shaped frame (19) is fixedly installed with a second hydraulic push rod (13), the extended end of the second hydraulic push rod (13) is fixedly connected to a micro motor (20), and the output end of the micro motor (20) is fixedly connected to a cleaning rod (21).

5. The multi-color multi-cavity injection molding system according to claim 4, characterized in that: The outer surface of the injection molding channel tube (3) is fixedly sleeved with a sealing ring (5), and movable racks (10) are movably arranged on both sides of the sealing ring (5). The outer surface of the injection molding channel tube (3) is slidably provided with a limiting plate (16) that is fixedly connected to the movable rack (10). One end of each of the two movable racks (10) is fixedly sleeved with a limiting block (9). The bottom end of the injection molding channel tube (3) is installed with a first hydraulic push rod (8), and the protruding end of the first hydraulic push rod (8) is fixedly connected to the limiting plate (16). One end of the sealing ring (5) is annularly fixedly connected with a plurality of docking strips (24), and the docking strips (24) are used in conjunction with the swing plate (27).

6. The multi-color multi-cavity injection molding system according to claim 5, characterized in that: The adjustment assembly (555) comprises two rotators (40) fixedly mounted on the outer surface of the injection molding hopper (1), and the two rotators (40) are respectively fixedly connected to the movable frame (10).

7. A zoned injection molding method for a multi-color and multi-cavity injection molding system, characterized in that: Using the multi-color multi-cavity injection molding system according to any one of claims 1 to 5, the method specifically comprises the following steps: S1: First, the rubber material is put into the injection molding channel tube (3) from the feed hopper (6), and the drive motor (7) is turned on by the external controller. After the drive motor (7) is running, it drives the rotating shaft (38) to rotate. After the rotating shaft (38) rotates, it drives the conveying impeller (39) to rotate to convey the molten rubber material. The conveyed material enters the injection molding hopper (1), and then enters the injection head (4) to be conveyed to the injection mold. After the injection molding is completed, the position of the injection molding hopper (1) is adjusted by the adjustment component (555) to make it a vertical state, with the injection head (4) facing downward. Then, the cleaning component (552) is operated to clean and scrape off the adhered material on the inner wall of the injection molding hopper (1); S2: After the cleaning is completed, the injection molding hopper (1) is rotated to the starting angle by operating the adjustment component (555). When the injection molding hopper (1) moves, the linkage component (553) and the protection component (554) are driven to move, and the linkage component (553) and the docking component (556) are matched and docked, thereby sealing the injection molding hopper (1), the injection molding channel tube (3) or the docking joint (22).

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