A two-color injection molding device for hard and soft rubber

Abstract

The present invention relates to the technical field of injection molding processing, and particularly relates to a two-color injection molding device for hard and soft rubber, including a main frame. A two-color injection molding die is installed at the front end of the main frame. The device further includes: heating sleeves, symmetrically arranged horizontally at the rear side of the two-color injection molding die. Nested openings are provided at both the front and rear ends of the heating sleeves, and electric heating wires are arranged in a ring around the middle of the heating sleeves; translation guide rails, symmetrically arranged horizontally on the left and right sides of the main frame. By providing detachable unit barrels, the traction connecting frame can drive the unit barrels to move synchronously, so that the unit barrels are connected to or separated from the two-color injection molding die and the heating sleeves, and are loaded and unloaded on the traction connecting frame at the same time, so as to realize the rapid replacement of the unit barrels, avoid the need for thorough cleaning when replacing raw materials for a fixed barrel, can quickly replace raw materials according to production requirements, shorten the overall downtime, and is beneficial to improving the efficiency of the overall production line.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding processing, and particularly to a two-color injection molding device for hard and soft rubber. Background Art

[0002] With the rapid development of the manufacturing industry and the increasing improvement of consumers' requirements for product quality, two-color injection molding technology, especially two-color injection molding of hard and soft rubber, has become a key process for innovation design and enhancing product competitiveness in many industries. The two-color injection molding technology of hard and soft rubber allows the integration of the structural strength of hard materials and the comfortable feel of soft materials in a single product, and is widely used in fields such as automotive interiors, consumer electronics, and medical equipment. As an important means to enhance product added value and differential design, two-color injection molding technology plays a key role in realizing product diversification. However, traditional two-color injection molding equipment has problems of long raw material replacement time and low production efficiency when facing frequent production switches and small-batch orders of multiple varieties.

[0003] Currently, two-color injection molding devices generally adopt a fixed barrel and screw design. Each time the raw material is replaced, thorough cleaning is required to avoid contamination of different colors or materials. This process is not only time-consuming and laborious, but also wastes a large amount of raw materials and water resources, increasing production costs. In addition, the equipment must be suspended during the cleaning process, seriously affecting the overall efficiency of the production line. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a two-color injection molding device for hard and soft rubber to solve the problem that the current two-color injection molding device cannot quickly replace raw materials according to production requirements, affecting the overall efficiency of the production line.

[0005] Based on the above purpose, the present invention provides a two-color injection molding device for hard and soft rubber, including a main frame, a two-color injection molding die is installed at the front end of the main frame, and further includes:

[0006] Heating sleeves, symmetrically arranged horizontally at the rear side of the two-color injection molding die, nested openings are provided at both the front and rear ends of the heating sleeves, and electric heating wires are wound around the middle of the heating sleeves;

[0007] Translation guide rails, symmetrically arranged horizontally on the left and right sides of the main frame, a translation traction frame is slidably connected in the middle of the translation guide rails;

[0008] Rotating adjustment frames, symmetrically arranged at the rear end of the main frame, a rotating connection ring is connected to the rear side of the rotating adjustment frames, the rotating adjustment frames are rotationally connected to the main frame through the rotating connection ring, a plurality of fitting storage grooves are evenly arranged in a circular shape in the middle of the rotating adjustment frames, and a storage guide rail is horizontally connected in the middle of the fitting storage grooves;

[0009] A unit barrel is slidably arranged on the inner side of the engaging receiving groove, a unit hopper is detachably connected to the top rear side of the unit barrel, a feeding screw is nested and rotatably arranged on the inner side of the unit barrel, a conical injection nozzle is arranged at the front end of the unit barrel, and a conical injection port is symmetrically arranged on the rear side of the two-color injection mold, and the unit barrel is mutually engaged and connected with the two-color injection mold through the conical injection nozzle and the conical injection port;

[0010] The traction connecting frame is connected to the rear end of the unit barrel, and the unit barrel is slidably connected to the storage guide rail and the translation guide rail through the traction connecting frame. The middle connection of the traction connecting frame is provided with a traction interlocking groove, and the translation traction frame and the traction interlocking groove are matched with each other.

[0011] Furthermore, the inner wall of the heating sleeve is surrounded by a plurality of interlocking connection grooves, and the outer wall of the unit barrel is surrounded by a plurality of interlocking connection blocks. The interlocking connection blocks and the interlocking connection grooves are arranged corresponding to each other and their sizes match each other. When the unit barrel is slidably inserted into the inner side of the heating sleeve through the nested opening, the interlocking connection blocks and the interlocking connection grooves are interlocked and connected with each other.

[0012] Furthermore, an injection channel is provided at the center of the conical injection nozzle, an injection opening is provided at the front end of the injection channel, the rear end of the injection channel is communicated with the interior of the unit barrel, a hollow guide sleeve is provided on the rear side of the injection opening, the hollow guide sleeve is fixedly connected to the unit barrel, a closed ejector rod is nested and slidably provided on the inner side of the hollow guide sleeve, a closed spring is provided on the rear side of the closed ejector rod, the sizes of the closed ejector rod and the injection channel are matched with each other, and the closed spring pushes the closed ejector rod into the injection channel to close the injection opening.

[0013] Furthermore, a liquid conveying channel is provided at the front end of the center of the conical injection port, and an opening push rod is fixedly connected in the middle of the conical injection port. The diameter of the opening push rod is smaller than the inner diameter of the injection channel. When the conical injection nozzle is fully embedded in the conical injection port, the opening push rod pushes the closing push rod to move backward to separate from the injection channel to open the injection opening.

[0014] Furthermore, the rotating adjustment frame drives all the unit barrels carried thereon to rotate. When the unit barrel rotates to the rear of the heating sleeve, the storage guide rail and the translation guide rail are aligned with each other and are located on the same horizontal line, and the traction engagement grooves on the corresponding unit barrels are embedded in the translation traction frame. The translation traction frame drives the unit barrels to move synchronously along the storage guide rail and the translation guide rail through the traction engagement grooves.

[0015] Furthermore, a positioning connection groove is provided at the rear end of the traction connection frame. A locking connection sleeve is connected inside the translation guide rail. A locking positioning pin is nested and slidably arranged inside the locking connection sleeve. A locking spring is arranged at the rear side of the locking positioning pin. An unlocking electromagnet is connected to the rear end of the locking connection sleeve. When the unit cartridge is slidably nested inside the heating sleeve, the conical injection nozzle is completely embedded in the conical injection port, and the positioning connection groove is aligned with the locking positioning pin.

[0016] Furthermore, a central drive shaft is connected to the center of the feeding screw. The rear end of the central drive shaft penetrates through the rear end of the unit cartridge and is connected with a conveying bevel gear. A rotating connection disk is connected to the rear side of the conveying bevel gear. A pressure sensor is connected to the rear side of the rotating connection disk. A buffer spring is arranged at the rear side of the pressure sensor. The front and rear ends of the buffer spring are fixedly connected to the pressure sensor and the traction connection frame respectively.

[0017] Furthermore, a screw servo motor is vertically arranged below the rear side of the heating sleeve. The screw servo motor is fixedly connected to the main frame. A drive sleeve is connected to the shaft end of the screw servo motor. A drive connection shaft is nested and slidably arranged inside the drive sleeve. A drive bevel gear is connected to the shaft end of the drive connection shaft. A rotating connection sleeve is nested and rotatably connected to the upper side of the drive connection shaft. A lifting clutch frame is connected to the outer side of the rotating connection sleeve. A hydraulic telescopic rod is connected to the outer side of the lifting clutch frame. The upper and lower ends of the hydraulic telescopic rod are respectively connected to the lifting clutch frame and the main frame. The hydraulic telescopic rod drives the drive connection shaft and the drive bevel gear to move up and down synchronously through the lifting clutch frame and the rotating connection sleeve, so that the drive bevel gear meshes with or disengages from the conveying bevel gear that moves above the drive bevel gear.

[0018] Furthermore, a hopper adjusting frame is arranged above the rear side of the heating sleeve. A central rotating shaft is vertically arranged at the center of the hopper adjusting frame. The hopper adjusting frame is rotatably connected to the main frame through the central rotating shaft. A second adjusting motor is connected to the shaft end of the central rotating shaft. A plurality of unit hoppers are evenly arranged around the middle of the hopper adjusting frame. A vertical feeding pipe is connected to the bottom end of the unit hopper. A feeding interface is arranged at the bottom end of the vertical feeding pipe. An inlet connection pipe is connected to the rear end of the top of the unit cartridge. An inlet interface is arranged at the top of the inlet connection pipe. When the unit cartridge is completely slidably nested inside the heating sleeve, the inlet interface is aligned with the feeding interface that rotates above the unit cartridge.

[0019] Further, a closed sleeve is nested and slidably arranged on the outer side of the vertical feed pipe. A magnetic linkage ring is connected around the outer side of the closed sleeve. A connecting spring is arranged above the magnetic linkage ring. An annular electromagnet is arranged around the outer side of the upper end of the vertical feed pipe.

[0020] Advantages of the present invention: As can be seen from the above, a soft and hard rubber two-color injection molding device provided by the present invention is provided with a detachable unit barrel. The unit barrel can be horizontally slid to be connected or separated from the heating sleeve. At the same time, it is mutually fitted and connected with the two-color injection molding die through a conical injection nozzle and a conical injection port. The device stores multiple unit barrels through a rotating adjusting frame and drives the unit barrels to rotate through the rotating adjusting frame for adjustment work. The traction connecting frame can traction drive the unit barrels to move synchronously, so that the unit barrels are mutually connected or separated from the two-color injection molding die and the heating sleeve, and are loaded and unloaded on the traction connecting frame at the same time, so as to realize the rapid replacement of the unit barrel, avoid the need for thorough cleaning when replacing the raw material of the fixed barrel, can quickly replace the raw material according to the production demand, shorten the overall shutdown time, and is beneficial to improving the efficiency of the overall production line. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a front structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 It is a top structural schematic diagram of an embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the two-color injection molding die of an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the main frame of an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the heating sleeve of an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the translation guide rail of an embodiment of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the unit barrel of an embodiment of the present invention;

[0029] Figure 8Schematic diagram of the internal structure of the unit cartridge according to an embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the structure of the driving bevel gear according to an embodiment of the present invention;

[0031] Figure 10 Schematic diagram of the structure of the rotary adjustment frame according to an embodiment of the present invention;

[0032] Figure 11 Schematic diagram of the structure of the hopper adjustment frame according to an embodiment of the present invention;

[0033] Figure 12 Schematic diagram of the structure of the unit hopper according to an embodiment of the present invention.

[0034] The markings in the figure are:

[0035] 1. Main frame; 101. Two-color injection mold; 102. Conical injection port; 103. Opening ejector rod; 104. Liquid delivery channel; 105. Heating sleeve; 106. Nested opening; 107. Fitting connection groove; 108. Electric heating wire; 109. Connection socket; 2. Translation guide rail; 201. Translation traction frame; 202. Traction screw sleeve; 203. Horizontal screw; 204. Translation traction motor; 205. Locking connection sleeve; 206. Locking positioning pin; 207. Locking spring; 208. Unlock electromagnet; 3. Screw servo motor; 301. Driving sleeve; 302. Driving connection shaft; 303. Driving bevel gear; 304. Rotary connection sleeve; 305. Lifting clutch frame; 306. Hydraulic telescopic rod; 4. Unit cartridge; 401. Fitting connection block; 402. Temperature sensor; 403. Feed connection pipe; 404. Feed interface; 405. Traction connection frame; 406. Traction fitting groove; 407. Positioning connection groove; 408. Connection plug; 5. Conical injection nozzle; 501. Injection channel; 502. Injection opening; 503. Hollow guide sleeve; 504. Sealing ejector rod; 505. Sealing spring; 6. Feeding screw; 601. Central drive shaft; 602. Conveying bevel gear; 603. Rotary connection disk; 604. Pressure sensor; 605. Buffer spring; 7. Rotary adjustment frame; 701. Fitting storage groove; 702. Storage guide rail; 703. Rotary connection ring; 704. Adjustment gear ring; 705. Adjustment gear; 706. First adjustment motor; 8. Hopper adjustment frame; 801. Central rotation shaft; 802. Second adjustment motor; 803. Unit hopper; 804. Feeding motor; 805. Stirring drive shaft; 806. Rotary stirring frame; 807. Sector-shaped closing plate; 9. Vertical feeding pipe; 901. Sector-shaped conveying port; 902. Feeding interface; 903. Ring-shaped electromagnet; 904. Sealing sleeve; 905. Connection spring; 906. Magnetic linkage ring. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further details the present invention with reference to specific embodiments.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown in

[0039] a heating sleeve 105, horizontally symmetrically arranged at the rear side of the two-color injection mold 101, nested openings 106 are arranged at both the front and rear ends of the heating sleeve 105, and an electric heating wire 108 is wound around the middle of the heating sleeve 105;

[0040] translation guide rails 2, horizontally symmetrically arranged on the left and right sides of the main frame 1, a translation traction frame 201 is slidably connected in the middle of the translation guide rails 2, and a traction fitting groove 406 is arranged in the middle of the translation traction frame 201;

[0041] rotary adjustment frames 7, symmetrically arranged at the rear end of the main frame 1, a rotary connection ring 703 is connected to the rear side of the rotary adjustment frame 7, the rotary adjustment frame 7 is rotatably connected to the main frame 1 through the rotary connection ring 703, a plurality of fitting storage grooves 701 are evenly arranged in a circular shape around the middle of the rotary adjustment frame 7, and a storage guide rail 702 is horizontally connected in the middle of the fitting storage groove 701;

[0042] The unit cartridge 4 is fitted and slidably arranged inside the fitting storage groove 701. A unit hopper 803 is detachably connected to the rear side of the top of the unit cartridge 4. A feeding screw 6 is nested and rotatably arranged inside the unit cartridge 4. A conical injection nozzle 5 is arranged at the front end of the unit cartridge 4. Conical injection ports 102 are symmetrically arranged on the rear side face of the two-color injection mold 101. The unit cartridge 4 is mutually fitted and connected with the two-color injection mold 101 through the conical injection nozzle 5 and the conical injection ports 102;

[0043] The traction connecting frame 405 is connected and arranged at the rear end of the unit cartridge 4. The unit cartridge 4 is slidably connected with the storage guide rail 702 and the translation guide rail 2 through the traction connecting frame 405. A traction fitting groove 406 is connected and arranged in the middle of the traction connecting frame 405. The translation traction frame 201 and the traction fitting groove 406 are mutually cooperatively arranged.

[0044] In this embodiment, the unit barrel 4 of the device is fed through the unit hopper 803 detachably connected to the rear side of the top. After the raw material is input into the unit barrel 4, it is heated and melted by the heating sleeve 105, and is driven forward by the rotation of the feeding screw 6, and then is conveyed to the two-color injection mold 101 through the conical injection nozzle 5 and the conical injection port 102 for injection molding. The unit barrel 4 is an independent, separable and detachable structure. The unit barrel 4 can be connected or separated from the heating sleeve 105 by horizontal sliding. At the same time, when the unit barrel 4 is slid into the heating sleeve 105, it is connected to the two-color injection mold 101 through the conical injection nozzle 5 and the conical injection port 102. The device stores multiple unit barrels 4 through the rotating adjustment frame 7 at the same time, and drives the unit barrel 4 to rotate through the rotating adjustment frame 7 for adjustment work. An adjustment gear ring 704 is arranged around the outer side of the rotating connection ring 703, and an adjustment gear 705 is meshed on the outer side of the adjustment gear ring 704. The shaft end of the adjustment gear 705 is connected with a first adjustment motor 706. The first adjustment motor 706 can drive the rotating connection ring 703 to rotate through the adjustment gear 705 and the adjustment gear ring 704, and then drive the rotating adjustment frame 7 to rotate. The rotating adjustment frame 7 drives all the unit barrels 4 carried thereon to rotate. When the unit barrel 4 rotates to the exact rear of the heating sleeve 105, the storage guide rail 702 and the translation guide rail 2 are aligned on the same horizontal line, and the traction fitting groove 406 on the corresponding unit barrel 4 is inserted into the translation traction frame 201. The outer side of the translation traction frame 201 is connected with a traction screw sleeve 202. A horizontal screw 203 is nested and connected in the middle of the traction screw sleeve 202. The shaft end of the horizontal screw 203 is connected with a translation traction motor 204. The translation traction motor 204 is fixedly connected to the main frame 1. Thus, the translation traction motor 204 can drive the translation traction frame 201 to move along the translation guide rail 2 through the horizontal screw 203 and the traction screw sleeve 202. The translation traction frame 201 drives the unit barrel 4 to move synchronously along the storage guide rail 702 and the translation guide rail 2 through the traction fitting groove 406, so that the unit barrel 4 is connected or separated from the two-color injection mold 101 and the heating sleeve 105, and is loaded and unloaded on the traction connection frame 405 at the same time, so as to realize the rapid replacement of the unit barrel 4, avoid the need for thorough cleaning when replacing the raw material of the fixed barrel, can quickly replace the raw material according to the production requirements, shorten the overall downtime, and is beneficial to improving the efficiency of the overall production line.

[0045] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, the inner wall of the heating sleeve 105 of the device is surrounded by a plurality of interlocking connection grooves 107, and the outer wall of the unit barrel 4 is surrounded by a plurality of interlocking connection blocks 401. The interlocking connection blocks 401 and the interlocking connection grooves 107 are arranged corresponding to each other and their sizes match each other. When the unit barrel 4 is slidably inserted into the inner side of the heating sleeve 105 through the nesting opening 106, the interlocking connection blocks 401 and the interlocking connection grooves 107 are interlocked and connected with each other, thereby facilitating the improvement of the heat conduction efficiency between the unit barrel 4 and the heating sleeve 105, so as to improve the heating production efficiency, and provide a positioning connection structure to improve the stability of the connection.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, preferably, an injection channel 501 is provided at the center of the conical injection nozzle 5 of the device, an injection opening 502 is provided at the front end of the injection channel 501, the rear end of the injection channel 501 is interconnected with the inside of the unit barrel 4, a hollow guide sleeve 503 is provided on the rear side of the injection opening 502, the hollow guide sleeve 503 is fixedly connected to the unit barrel 4, a closed ejector rod 504 is nested and slidably provided on the inner side of the hollow guide sleeve 503, a closed spring 505 is provided on the rear side of the closed ejector rod 504, the sizes of the closed ejector rod 504 and the injection channel 501 are matched with each other, the closed spring 505 pushes the closed ejector rod 504 to insert into the injection channel 501 to close the injection opening 502, and the center of the conical injection port 102 is provided with a hollow guide sleeve 503, the hollow guide sleeve 503 is fixedly connected to the unit barrel 4, a closed ejector rod 504 is nested and slidably provided on the inner side of the hollow guide sleeve 503, a closed ejector rod 504 is provided on the rear side of the closed ejector rod 504, the sizes of the closed ejector rod 504 and the injection channel 501 are matched with each other, the closed spring 505 pushes the closed ejector rod 504 to insert into the injection channel 501 to close the injection opening 502, and the center of the conical injection port 102 is provided with a hollow guide sleeve 503. A liquid conveying channel 104 is provided at the front end, and an opening push rod 103 is fixedly connected in the middle of the conical injection port 102. The diameter of the opening push rod 103 is smaller than the inner diameter of the injection channel 501. Therefore, when the conical injection nozzle 5 is fully embedded in the conical injection port 102, the opening push rod 103 pushes the closing push rod 504 to move backward to separate from the injection channel 501 to open the injection opening 502, which is convenient for conveying the molten raw material for injection molding processing. When the unit barrel 4 is disassembled, the conical injection nozzle 5 and the conical injection port 102 are separated from each other, and the closing spring 505 pushes the closing push rod 504 to insert into the injection channel 501 to close the injection opening 502, thereby avoiding the molten raw material from being discharged and overflowing when the unit barrel 4 is replaced.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 ,Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown in Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , preferably, the rotary adjustment frame 7 of the device drives all the unit cartridges 4 carried thereon to rotate. When the unit cartridge 4 rotates to the exact rear of the heating sleeve 105, the storage guide rail 702 and the translation guide rail 2 are aligned with each other on the same horizontal line, and the insertion translation traction frame 201 corresponding to the traction fitting groove 406 on the unit cartridge 4. The translation traction frame 201 drives the unit cartridge 4 to move synchronously along the storage guide rail 702 and the translation guide rail 2 through the traction fitting groove 406. And a positioning connection groove 407 is provided at the rear end of the traction connection frame 405. A locking connection sleeve 205 is connected and arranged inside the translation guide rail 2. A locking positioning pin 206 is nested and slidably arranged inside the locking connection sleeve 205. A locking spring 207 is arranged at the rear side of the locking positioning pin 206. An unlocking electromagnet 208 is connected and arranged at the rear end of the locking connection sleeve 205. When the unit cartridge 4 slides and nests inside the heating sleeve 105, the conical injection nozzle 5 is completely inserted into the conical injection port 102, and the positioning connection groove 407 and the locking positioning pin 206 are aligned with each other. At this time, the locking positioning pin 206 can be inserted into the positioning connection groove 407 to lock the traction connection frame 405 and the corresponding unit cartridge 4. And after the unlocking electromagnet 208 is energized, it can attract the magnetic locking positioning pin 206 to move out of the positioning connection groove 407 to unlock the traction connection frame 405 and the corresponding unit cartridge 4, so as to facilitate quickly locking and unlocking the unit cartridge 4 and realize the quick replacement of the unit cartridge 4.

[0048] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, a central drive shaft 601 is connected to the center of the feeding screw 6 of the device. The rear end of the central drive shaft 601 penetrates through the rear end of the unit barrel 4 and is connected with a transmission bevel gear 602. The transmission bevel gear 602 can drive the feeding screw 6 to rotate through the central drive shaft 601 to convey raw materials for injection molding. And a rotary connection disc 603 is connected to the rear side of the transmission bevel gear 602, a pressure sensor 604 is connected to the rear side of the rotary connection disc 603, a buffer spring 605 is arranged at the rear side of the pressure sensor 604, and the front and rear ends of the buffer spring 605 are fixedly connected to the pressure sensor 604 and the traction connection frame 405 respectively. Thus, the whole feeding screw 6 can move back and forth within a certain range to cooperate with the pressure sensor 604 to detect the conveying pressure in real time. And a temperature sensor 402 is also arranged inside the unit barrel 4. And a connection plug 408 is connected to the upper side of the traction connection frame 405. Both the temperature sensor 402 and the pressure sensor 604 are electrically connected to the connection plug 408. A connection socket 109 is connected to the upper side of the rear end of the heating sleeve 105. The connection plug 408 and the connection socket 109 are arranged corresponding to each other. Thus, when the unit barrel 4 is inserted into the heating sleeve 105 for installation, the connection plug 408 and the connection socket 109 are also inserted and connected synchronously, which is convenient for realizing the data transmission of the pressure sensor 604 and the temperature sensor 402 for real-time regulation according to requirements, making it more flexible and convenient to use.

[0049] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown, preferably, a screw servo motor 3 is vertically arranged below the rear side of the heating sleeve 105 of the device. The screw servo motor 3 is fixedly connected to the main frame 1. A driving sleeve 301 is connected to the shaft end of the screw servo motor 3. A driving connecting shaft 302 is nested and slidably arranged inside the driving sleeve 301. A driving bevel gear 303 is connected to the shaft end of the driving connecting shaft 302. Thus, the screw servo motor 3 can drive the driving bevel gear 303 to rotate through the driving sleeve 301 and the driving connecting shaft 302. At the same time, a rotating connecting sleeve 304 is nested and rotatably connected to the upper side of the driving connecting shaft 302. A lifting clutch frame 305 is connected to the outer side of the rotating connecting sleeve 304. A hydraulic telescopic rod 306 is connected to the outer side of the lifting clutch frame 305. The upper and lower ends of the hydraulic telescopic rod 306 are respectively connected to the lifting clutch frame 305 and the main frame 1. The hydraulic telescopic rod 306 drives the driving connecting shaft 302 and the driving bevel gear 303 to move up and down synchronously through the lifting clutch frame 305 and the rotating connecting sleeve 304, so that the driving bevel gear 303 meshes with or separates from the conveying bevel gear 602 that has moved above the driving bevel gear 303. Thus, the screw servo motor 3 is used to drive the feeding screw 6, and it is convenient to control and adjust the position connection of the driving bevel gear 303, so as to quickly replace and load and unload the unit cartridge 4, making it more flexible and convenient to use.

[0050] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, a hopper adjusting frame 8 is provided above the rear side of the heating sleeve 105 of the device. A central rotating shaft 801 is vertically arranged at the center of the hopper adjusting frame 8. The hopper adjusting frame 8 is rotationally connected to the main frame 1 through the central rotating shaft 801. A second adjusting motor 802 is connected to the shaft end of the central rotating shaft 801. A plurality of unit hoppers 803 are evenly arranged around the middle of the hopper adjusting frame 8. A vertical feeding pipe 9 is connected to the bottom end of the unit hopper 803. A feeding interface 902 is arranged at the bottom end of the vertical feeding pipe 9. An inlet connecting pipe 403 is connected to the rear end of the top of the unit cylinder 4. An inlet interface 404 is arranged at the top of the inlet connecting pipe 403. When the unit cylinder 4 is completely slidably nested inside the heating sleeve 105, the inlet interface 404 is aligned with the feeding interface 902 rotated above the unit cylinder 4. At this time, the raw material in the unit cylinder 4 can be conveyed to the inlet connecting pipe 403 through the vertical feeding pipe 9. Thus, the unit hopper 803 can be quickly adjusted and replaced according to the needs in cooperation with the unit cylinder 4 to adjust and replace the injection molding raw material. At the same time, a closed sleeve 904 is slidably nested outside the vertical feeding pipe 9. A magnetic linkage ring 906 is connected around the outside of the closed sleeve 904. A connecting spring 905 is arranged above the magnetic linkage ring 906. An annular electromagnet 903 is arranged around the outer side of the upper end of the vertical feeding pipe 9. Therefore, when the inlet interface 404 is aligned with the feeding interface 902 rotated above the unit cylinder 4, the annular electromagnet 903 loses power, and the connecting spring 905 can push the closed sleeve 904 to slide downward to be nested outside the inlet connecting pipe 403, realizing the closed connection between the inlet connecting pipe 403 and the vertical feeding pipe 9, facilitating the conveying of the raw material and avoiding the discharge of the raw material. At the same time, when separation adjustment is required, the annular electromagnet 903 is energized to attract the closed sleeve 904 to move upward through the magnetic linkage ring 906, so that the closed sleeve 904 is separated from the inlet connecting pipe 403, facilitating the adjustment and replacement of the unit hopper 803 and the unit cylinder 4, and making it more flexible and convenient to use.

[0051] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, a feeding motor 804 is connected to the top of the unit hopper 803 of the device. A stirring drive shaft 805 is connected to the shaft end of the feeding motor 804. A rotating stirring frame 806 is connected around the outer side of the stirring drive shaft 805. Thus, the feeding motor 804 can drive the rotating stirring frame 806 to rotate through the stirring drive shaft 805 to stir the raw material particles inside the unit hopper 803, facilitating the smooth transportation of the raw materials. And a sector-shaped closing plate 807 is connected to the lower end of the stirring drive shaft 805. A sector-shaped conveying port 901 is arranged in the middle of the feeding interface 902. The raw materials are conveyed downward through the sector-shaped conveying port 901. The sector-shaped conveying port 901 and the sector-shaped closing plate 807 are arranged corresponding to each other. Thus, the feeding motor 804 can drive the sector-shaped closing plate 807 to rotate through the stirring drive shaft 805, so that the sector-shaped closing plate 807 shields and closes the sector-shaped conveying port 901, or is misaligned with the sector-shaped conveying port 901 to open the sector-shaped conveying port 901. When it is convenient to separate and adjust the unit hopper 803 and the unit cylinder 4, the sector-shaped conveying port 901 can be closed to prevent the raw materials from leaking.

[0052] In use, the unit cartridge 4 of the device is fed through the unit hopper 803 detachably connected to the rear side of the top. After the raw material is input into the interior of the unit cartridge 4, it is heated and melted by the heating sleeve 105, and is conveyed forward by the rotation drive of the feeding screw 6. Then, it is conveyed to the two-color injection mold 101 through the conical injection nozzle 5 and the conical injection port 102 for injection molding. When it is necessary to replace the raw material, the feeding motor 804 can drive the sector-shaped closing plate 807 to rotate through the stirring drive shaft 805, so that the sector-shaped closing plate 807 shields and closes the sector-shaped conveying port 901. At the same time, the annular electromagnet 903 is energized to attract the magnetic linkage ring 906 to attract the closing sleeve 904 to move upward through the magnetic force, so that the closing sleeve 904 is separated from the feeding connecting pipe 403. Then, the second adjustment motor 802 drives the hopper adjustment frame 8 to rotate through the central rotating shaft 801, rotates the unit hopper 803 loaded with the required raw material to directly above the unit cartridge 4. Then, after the unlocking electromagnet 208 is energized, it attracts the magnetic locking positioning pin 206 to move out of the positioning connection groove 407 to unlock the traction connection frame 405 and the corresponding unit cartridge 4. And the hydraulic expansion and contraction rod 306 drives the drive connection shaft 302 and the drive bevel gear 303 to move downward synchronously through the lifting clutch frame 305 and the rotating connection sleeve 304, so that the drive bevel gear 303 is separated from the conveying bevel gear 602 moving above the drive bevel gear 303. The translation traction motor 204 drives the translation traction frame 201 to move along the translation guide rail 2 through the horizontal screw 203 and the traction nut 202. The translation traction frame 201 drives the unit cartridge 4 to move synchronously along the translation guide rail 2 and the storage guide rail 702 through the traction fitting groove 406, and moves the unit cartridge 4 to the fitting storage groove 701 vacant in the rotation adjustment frame 7. Then, the first adjustment motor 706 can drive the rotating connection ring 703 to rotate through the adjustment gear 705 and the adjustment gear ring 704, and then drive the rotation adjustment frame 7 to rotate. When the fitting storage groove 701 storing the required unit cartridge 4 is rotated to directly behind the heating sleeve 105, then the translation traction frame 201 drives the unit cartridge 4 to move synchronously along the storage guide rail 702 and the translation guide rail 2 through the traction fitting groove 406, so that the unit cartridge 4 is connected to the two-color injection mold 101 and the heating sleeve 105. Then, the annular electromagnet 903 is powered off, and the connecting spring 905 pushes the closing sleeve 904 to slide downward to be nested outside the feeding connecting pipe 403 to realize the closed connection between the feeding connecting pipe 403 and the vertical feeding pipe 9. Finally, the hydraulic expansion and contraction rod 306 drives the drive connection shaft 302 and the drive bevel gear 303 to move upward synchronously through the lifting clutch frame 305 and the rotating connection sleeve 304, so that the drive bevel gear 303 meshes with the conveying bevel gear 602 moving above the drive bevel gear 303, thus completing the rapid replacement of the unit cartridge 4 and the unit hopper 803 and realizing the rapid adjustment and replacement of the raw material.

[0053] The two-color injection molding device for hard and soft rubber provided by the present invention is provided with a detachable unit barrel 4. The unit barrel 4 can be horizontally slid to be connected or separated from the heating sleeve 105. At the same time, it is mutually and fittingly connected with the two-color injection molding die 101 through the conical injection nozzle 5 and the conical injection port 102. The device stores a plurality of unit barrels 4 through the rotary adjustment frame 7 at the same time, and drives the unit barrel 4 to rotate through the rotary adjustment frame 7 for adjustment work. The traction connecting frame 405 can traction drive the unit barrel 4 to move synchronously, so that the unit barrel 4 is mutually connected or separated from the two-color injection molding die 101 and the heating sleeve 105, and the loading and unloading are carried out on the traction connecting frame 405 at the same time, so as to realize the rapid replacement of the unit barrel 4, avoid the need for thorough cleaning when replacing the raw material of the fixed barrel, can quickly replace the raw material according to the production demand, shorten the overall downtime, and is beneficial to improving the efficiency of the overall production line.

[0054] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present invention is limited to these examples; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity. Any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A soft and hard plastic two-color injection molding device, comprising a main frame (1), a two-color injection mold (101) is installed at the front end of the main frame (1), characterized in that: Also includes: A heating sleeve (105) is horizontally symmetrically arranged on the rear side of the two-color injection mold (101), and the front and rear ends of the heating sleeve (105) are both provided with nesting openings (106), and an electric heating wire (108) is arranged around the middle of the heating sleeve (105); A translation guide rail (2) is horizontally and symmetrically arranged on the left and right sides of the main frame (1), and a translation traction frame (201) is slidably connected in the middle of the translation guide rail (2); A rotating adjustment frame (7) is symmetrically arranged at the rear end of the main frame (1); a rotating connection ring (703) is connected to the rear side of the rotating adjustment frame (7); the rotating adjustment frame (7) is rotatably connected to the main frame (1) via the rotating connection ring (703); a plurality of embedded storage grooves (701) are evenly arranged in a circular shape in the middle of the rotating adjustment frame (7); and a storage guide rail (702) is horizontally connected to the middle of the embedded storage groove (701); A unit barrel (4) is slidably arranged on the inner side of the engaging receiving groove (701), a unit hopper (803) is detachably connected to the top rear side of the unit barrel (4), a feeding screw (6) is nested and rotatably arranged on the inner side of the unit barrel (4), a conical injection nozzle (5) is arranged at the front end of the unit barrel (4), and a conical injection port (102) is symmetrically arranged on the rear side of the two-color injection mold (101), and the unit barrel (4) is mutually engaged and connected with the two-color injection mold (101) through the conical injection nozzle (5) and the conical injection port (102); A traction connection frame (405) is connected to the rear end of the unit barrel (4), and the unit barrel (4) is slidably connected to the storage guide rail (702) and the translation guide rail (2) through the traction connection frame (405). A traction interlocking groove (406) is provided in the middle connection of the traction connection frame (405), and the translation traction frame (201) and the traction interlocking groove (406) are arranged to cooperate with each other.

2. The soft and hard plastic two-color injection molding device according to claim 1 is characterized in that: The inner wall of the heating sleeve (105) is surrounded by a plurality of interlocking connection grooves (107), and the outer wall of the unit barrel (4) is surrounded by a plurality of interlocking connection blocks (401). The interlocking connection blocks (401) and the interlocking connection grooves (107) are arranged correspondingly to each other and their sizes match each other. When the unit barrel (4) is slidably inserted into the inner side of the heating sleeve (105) through the nesting opening (106), the interlocking connection blocks (401) and the interlocking connection grooves (107) are interlocked and connected with each other.

3. The soft and hard plastic two-color injection molding device according to claim 1, characterized in that: An injection channel (501) is provided at the center of the conical injection nozzle (5), an injection opening (502) is provided at the front end of the injection channel (501), the rear end of the injection channel (501) is interconnected with the interior of the unit barrel (4), a hollow guide sleeve (503) is provided on the rear side of the injection opening (502), the hollow guide sleeve (503) is fixedly connected to the unit barrel (4), a closed ejector rod (504) is nested and slidably provided on the inner side of the hollow guide sleeve (503), a closed spring (505) is provided on the rear side of the closed ejector rod (504), the sizes of the closed ejector rod (504) and the injection channel (501) are matched with each other, and the closed spring (505) pushes the closed ejector rod (504) to be inserted into the injection channel (501) to close the injection opening (502).

4. The soft and hard plastic two-color injection molding device according to claim 3 is characterized in that: A liquid delivery channel (104) is provided at the front end of the center of the conical injection port (102); an opening push rod (103) is fixedly connected to the middle of the conical injection port (102); the diameter of the opening push rod (103) is smaller than the inner diameter of the injection channel (501); when the conical injection nozzle (5) is completely embedded in the conical injection port (102), the opening push rod (103) pushes the closing push rod (504) to move backward and away from the injection channel (501) to open the injection opening (502).

5. The soft and hard plastic two-color injection molding device according to claim 1, characterized in that: The rotating adjustment frame (7) drives all the unit barrels (4) carried thereon to rotate. When the unit barrel (4) rotates to the rear of the heating sleeve (105), the storage guide rail (702) and the translation guide rail (2) are aligned with each other and located on the same horizontal line, and the traction engagement groove (406) on the corresponding unit barrel (4) is embedded in the translation traction frame (201). The translation traction frame (201) drives the unit barrel (4) to move synchronously along the storage guide rail (702) and the translation guide rail (2) through the traction engagement groove (406).

6. The soft and hard plastic two-color injection molding device according to claim 5, characterized in that: The rear end of the traction connecting frame (405) is provided with a positioning connecting groove (407), the internal connection of the translation guide rail (2) is provided with a locking connecting sleeve (205), the inner side of the locking connecting sleeve (205) is nested and slidably provided with a locking positioning pin (206), the rear side of the locking positioning pin (206) is provided with a locking spring (207), the rear end of the locking connecting sleeve (205) is connected with an unlocking electromagnet (208), when the unit barrel (4) is slidably nested into the inner side of the heating sleeve (105), the conical injection nozzle (5) is completely embedded in the conical injection port (102), and the positioning connecting groove (407) and the locking positioning pin (206) are aligned with each other.

7. The soft and hard plastic two-color injection molding device according to claim 1, characterized in that: A central drive shaft (601) is connected to the center of the feeding screw (6); the rear end of the central drive shaft (601) passes through the rear end of the unit barrel (4) and is connected to a conveying bevel gear (602); the rear side of the conveying bevel gear (602) is connected to a rotating connection disk (603); the rear side of the rotating connection disk (603) is connected to a pressure sensor (604); the rear side of the pressure sensor (604) is provided with a buffer spring (605); the front and rear ends of the buffer spring (605) are respectively fixedly connected to the pressure sensor (604) and the traction connection frame (405).

8. The soft and hard plastic two-color injection molding device according to claim 7, characterized in that: A screw servo motor (3) is vertically arranged at the lower rear side of the heating sleeve (105); the screw servo motor (3) is fixedly connected to the main frame (1); a drive sleeve (301) is connected to the shaft end of the screw servo motor (3); a drive connecting shaft (302) is slidably arranged inside the drive sleeve (301); a drive bevel gear (303) is connected to the shaft end of the drive connecting shaft (302); a rotating connecting sleeve (304) is rotatably arranged on the upper side of the drive connecting shaft (302); and the outer side of the rotating connecting sleeve (304) is connected to the drive connecting shaft (302). A lifting clutch frame (305) is connected to the main frame (1), and a hydraulic telescopic rod (306) is connected to the outer side of the lifting clutch frame (305). The upper and lower ends of the hydraulic telescopic rod (306) are respectively connected to the lifting clutch frame (305) and the main frame (1). The hydraulic telescopic rod (306) drives the driving connection shaft (302) and the driving bevel gear (303) to move up and down synchronously through the lifting clutch frame (305) and the rotating connecting sleeve (304), so that the driving bevel gear (303) and the conveying bevel gear (602) moved above the driving bevel gear (303) are engaged with or separated from each other.

9. The soft and hard plastic two-color injection molding device according to claim 1, characterized in that: A hopper adjustment frame (8) is arranged above the rear side of the heating sleeve (105), a central rotating shaft (801) is arranged vertically at the center of the hopper adjustment frame (8), the hopper adjustment frame (8) is rotatably connected to the main frame (1) via the central rotating shaft (801), a second adjustment motor (802) is connected to the shaft end of the central rotating shaft (801), a plurality of unit hoppers (803) are evenly arranged around the middle of the hopper adjustment frame (8), and the unit hoppers (803) are arranged in a manner that allows the hopper to move freely. The bottom end is connected with a vertical feeding pipe (9), the bottom end of which is provided with a feeding interface (902), the top rear end of the unit barrel (4) is connected with a feeding connection pipe (403), the top of which is provided with a feeding interface (404), and when the unit barrel (4) is completely slid and nested into the inner side of the heating sleeve (105), the feeding interface (404) is aligned with the feeding interface (902) rotated to the top of the unit barrel (4).

10. The soft and hard plastic two-color injection molding device according to claim 9, characterized in that: A closed sleeve (904) is slidably nested on the outer side of the vertical feeding tube (9), a magnetic linkage ring (906) is connected and arranged around the outer side of the closed sleeve (904), a connecting spring (905) is arranged above the magnetic linkage ring (906), and a ring-shaped electromagnet (903) is arranged around the outer side of the upper end of the vertical feeding tube (9).

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