Injection molding machine structure of in-mold rapid cooling circulation system

Abstract

The injection molding machine structure comprises a machine table, a material injector is arranged on one side of the top face of the machine table, and a fixed mold plate is fixedly connected to the middle of the top face of the machine table; the temperature control structure can inject cold liquid or hot liquid into the micro-channel coil pipe, a small air compressor is arranged to discharge residual liquid, in this way, during forming, the hot liquid can be injected into the micro-channel coil pipe, the liquidity of molten liquid is guaranteed, and in the cooling stage, the hot liquid is switched to the cold liquid, so that the hot liquid can be conveniently discharged; in this way, cold liquid is injected again for circulation to achieve rapid cooling, the phenomenon that the fluidity of molten liquid becomes poor due to the low mold temperature in the forming period is avoided, rapid cooling can be achieved in the cooling stage, and the refrigeration effect is more comprehensive. The positioning structure and the guide structure are matched with each other to realize positioning of the injection head, so that the injection head can be accurately inserted into an injection port, and the phenomenon of insertion type friction and rubbing caused by displacement of the injection head is avoided.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, specifically to an injection molding machine structure with an in-mold rapid cooling circulation system. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are classified into vertical, horizontal, and all-electric types. Injection molding machines heat plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. They mainly consist of a mold mechanism and an injection mechanism. The injection mechanism heats the molten material and injects the liquid into the mold for molding. For example, Chinese invention patent CN115122566A discloses a horizontal injection molding machine for BMC raw material injection molding, including: a mold clamping part with a cavity; an injection part including a nozzle assembly, a barrel, and a plunger rod, the nozzle assembly being located between the mold clamping part and the barrel and communicating with the cavity and the barrel, the plunger rod being located inside the barrel and capable of moving along the barrel; and a feeding part communicating with the barrel, suitable for conveying raw material into the barrel. After molding in the mold, the injection molding machine needs cooling. Current rapid cooling technology uses microchannels within the mold for cooling through coolant circulation. However, current injection molding machines have the following drawbacks: Currently, most cooling methods rely on in-mold coolant circulation, resulting in a low mold temperature after molding. Consequently, during subsequent injection molding, the molten liquid cools down upon entering the mold, affecting its fluidity and leading to defects. This cooling method has certain limitations. Furthermore, during injection, the injection head needs to be inserted into the mold's injection port. Due to the relatively long injection tube, slight deformation is common, especially in horizontal injection molding machines where the injection tube tends to deviate slightly downwards. This causes friction between the injection head and the injection port during insertion, potentially resulting in scratches and other defects.

[0003] To address these issues, we propose an in-mold rapid cooling circulation system for injection molding machines. Summary of the Invention

[0004] The purpose of this invention is to provide an injection molding machine structure with an in-mold rapid cooling circulation system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection molding machine structure with an in-mold rapid cooling circulation system, including a machine base, a material injector provided on one side of the top surface of the machine base, a fixed template fixedly connected to the middle of the top surface of the machine base, a mold closing power structure provided on the side of the top surface of the machine base away from the material injector, a moving template horizontally slidably provided on the top surface of the machine base between the mold closing power structure and the fixed template, and a side opening provided on the machine base, with a temperature control structure provided inside the side opening; The temperature control structure includes a base plate, with a housing fixedly connected to the top surface of the base plate. A cold liquid inlet male connector and a hot liquid inlet male connector are fixedly connected to the side wall of the housing. The cold liquid inlet male connector is fixedly connected to and connected to a cold liquid inlet pipe, and the hot liquid inlet male connector is fixedly connected to and connected to a hot liquid inlet pipe. The ends of the cold liquid inlet pipe and the hot liquid inlet pipe are fixedly connected to and connected to both ends of a four-way switching valve. A main inlet pipe is also fixedly connected to and connected to the four-way switching valve. A small air compressor is fixedly connected to the top surface of the housing, and the output end of the small air compressor is fixedly connected to and connected to an air pipe. The end of the air pipe is fixedly connected to and connected to the purge pipe. The end of the purge pipe is fixedly connected to and connected to the four-way switching valve. The side wall of the chamber shell is also fixedly connected to a cold liquid return male connector and a hot liquid return male connector. The cold liquid return male connector is fixedly connected to and connected to the cold liquid return pipe. The hot liquid return male connector is fixedly connected to and connected to the hot liquid return pipe. The ends of the cold liquid return pipe and the hot liquid return pipe are fixedly connected to and connected to the three-way switching valve. The end of the three-way switching valve is fixedly connected to and connected to the main return pipe. The air pipe is fixedly connected to and connected to a pressure regulating valve and a high-speed solenoid valve. The fixed template is fixed to the fixed mold body on the side near the moving template. A microchannel coil is fixed inside the fixed mold body. The microchannel coil is connected to the main liquid inlet pipe and the main return pipe.

[0006] Preferably, the fixed template sidewall is fixedly connected to an inlet male connector and an outlet male connector, the fixed template sidewall is also fixedly connected to an inlet transfer male connector and an outlet transfer male connector, the fixed mold body sidewall is fixedly connected to an inlet hose and an outlet hose, the inlet hose and the outlet hose are fixedly connected to and connected to a microchannel coil, the end of the inlet hose is fixedly connected to and connected to an inlet female connector, the inlet female connector is inserted into and connected to an inlet male connector, the end of the outlet hose is fixedly connected to and connected to an outlet female connector, the outlet female connector is inserted into and connected to an outlet male connector, the inlet transfer male connector is connected to an inlet male connector, the outlet transfer male connector is connected to an outlet male connector, the end of the main inlet pipe is fixedly connected to and connected to an inlet transfer female connector, the end of the main return pipe is fixedly connected to and connected to a return transfer female connector, the inlet transfer female connector is inserted into and connected to an inlet transfer male connector, and the return transfer female connector is inserted into and connected to an outlet transfer male connector.

[0007] Preferably, the material injector is provided with an injection tube at one end near the moving template, the injection tube is fixedly connected to an injection head, a positioning structure is sleeved on the end of the injection tube near the injection head, the fixed template has a cavity opening on the side near the material injector, a guide structure is provided inside the cavity opening, a through opening is provided on the side wall of the cavity opening, and an injection port is provided in the middle of the side of the fixed mold body near the fixed template, the injection port is connected to the through opening.

[0008] Preferably, the positioning structure includes a sleeve that is fixedly fitted onto the end of the injection tube. A frustum block is slidably fitted onto the sleeve, with the diameter of the end of the frustum block near the fixed template being smaller than the diameter of the other end. A horizontal sliding hole is formed on the frustum block, and the sliding hole is slidably fitted onto the sleeve. An inner groove is formed on the periphery of the sleeve, and a sliding ring is fixedly fitted onto the inner side of the sliding hole. The sliding ring is slidably fitted onto the inner groove. A spring is fixedly connected between the sliding ring and the end of the inner groove. Multiple lugs are evenly fixed to the periphery of the sleeve at the end away from the injection head. The end of a limiting rod is fixedly connected to the side of the lugs near the frustum block. A limiting hole is formed on the side wall of the frustum block corresponding to the position of each limiting rod, and the limiting rod is slidably inserted into the limiting hole.

[0009] Preferably, the guide structure includes a seat body, which is fixedly sleeved inside the cavity. A conical opening is formed on the side of the seat body near the material injector. The diameter of the conical opening at the end near the material injector is larger than the diameter at the other end. A through hole is formed on the side wall of the conical opening, which connects the conical opening and the through port. Multiple ball bearings are tactilely connected to the side wall of the conical opening.

[0010] Preferably, a cold liquid tank and a hot liquid tank are fixedly connected to the top surface inside the tank shell, a cold compartment and a heating compartment are fixedly connected to the bottom surface inside the tank shell, the cold liquid tank is connected to the cold compartment, the hot liquid tank is connected to the heating compartment, the side wall of the cold compartment is horizontally fixedly connected to and connected to the cold liquid return compartment, the side wall of the heating compartment is horizontally fixedly connected to and connected to the hot liquid return compartment, and a first circulation pump and a second circulation pump are also fixedly connected to the bottom surface inside the tank shell, the first circulation pump is connected to the cold compartment, and the second circulation pump is connected to the heating compartment.

[0011] Preferably, a first temperature-regulating chamber and a second temperature-regulating chamber are fixedly connected inside the chamber shell above the first and second circulation pumps. The first temperature-regulating chamber is fixedly connected to and connected to the first circulation pump via a first connecting pipe, and the second temperature-regulating chamber is fixedly connected to and connected to the second circulation pump via a second connecting pipe. The cold liquid inlet male connector is connected to the cold liquid return chamber, the hot liquid inlet male connector is connected to the hot liquid return chamber, the cold liquid return male connector is connected to the first temperature-regulating chamber, and the hot liquid return male connector is connected to the second temperature-regulating chamber.

[0012] Preferably, the top surface of the machine platform is fixedly connected to a slide rail, the bottom surface of the moving template is fixedly connected to a slide block, the slide block is slidably connected to the slide rail, the side of the moving template near the fixed template is fixedly connected to a moving mold cover, multiple heaters are fixedly sleeved on the injection tube, the top surface of the material injector is fixedly connected to a feed pipe, the top end of the feed pipe is fixedly connected to and connected to a material hopper, the feed pipe is connected to the injection tube, and the top surface of the machine platform is also fixedly connected to a propulsion structure.

[0013] Preferably, the propulsion structure includes a platform fixed to the top surface of the machine base, a U-shaped seat horizontally slidably sleeved on the top surface of the platform, a material injector fixed to the top surface of the U-shaped seat, the top surface of the platform having an inwardly concave structure, a lead screw horizontally rotatably connected to the inner side of the top surface of the platform, a force-bearing plate fixed to the bottom surface of the U-shaped seat, a threaded sleeve fixed to the force-bearing plate, the lead screw threadedly connected to the threaded sleeve, two guide rails fixed to both sides of the top surface of the platform, two guide seats fixed to both sides of the bottom surface of the U-shaped seat, the guide seats horizontally slidably connected to the guide rails, a servo reduction motor fixed to the end of the platform, and the end of the lead screw fixed to the shaft end of the servo reduction motor.

[0014] Preferably, the mold-closing power structure includes an end block fixed to the top surface of the machine base end. Four optical shafts are horizontally fixed to the four corners of the end block. The ends of the four optical shafts are fixed to the four corners of the fixed template. Four guide holes are opened at the four corners of the moving template. The optical shafts slide into the guide holes. Two side support plates are horizontally fixed to both sides of the end block. A push plate is horizontally slidably arranged between the two side support plates. The push plate is located between the moving template and the end block. A push frame is fixed to the side of the moving template near the end block. Two first hinge blocks are fixed to the top and bottom surfaces of the end block. Two second hinge blocks are fixed to the top and bottom ends of the push frame. Each first hinge block is rotatably connected to one end of a first connecting arm. The other end of the first connecting arm is rotatably connected to one end of a second connecting arm. The end block is rotatably connected to the second hinge block. Two third hinge blocks are fixed to the top and bottom of the push plate. A fourth hinge block is fixed to the side wall of the first connecting arm near the end of the second connecting arm. The third hinge block is rotatably connected to one end of the short connecting arm. The other end of the short connecting arm is rotatably connected to the fourth hinge block. A hydraulic cylinder is fixedly sleeved on the end block. The output end of the hydraulic cylinder is fixed to the side wall of the push plate. Four guide sleeves are fixed at the four corners of the push frame. The guide sleeves are fixed to the side wall of the moving template. The guide sleeves are slidably sleeved to the optical shaft rod. A side slide groove is opened on the side of the side support plate near the push plate. Two side sliders are fixed to both sides of the push plate. The side sliders are horizontally slidably connected in the side slide groove. A guide rod is horizontally fixed in the side slide groove. A guide hole is horizontally opened on the side slider. The guide rod is slidably sleeved to the guide hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the temperature control structure can inject either cold or hot liquid into the microchannel coil, and a small air compressor is provided to discharge residual liquid. During molding, hot liquid can be injected into the microchannel coil to maintain mold temperature and ensure the fluidity of the molten liquid. During the cooling stage, the system switches to cold liquid, and during this switch, compressed air is blown in by the temperature control structure to expel the hot liquid. This recirculation of cold liquid achieves rapid cooling, preventing poor molten liquid fluidity due to low mold temperature during molding. Furthermore, rapid cooling during the cooling stage provides a more comprehensive cooling effect. The positioning and guiding structures work together to position the injection head. During injection, as the injection head is inserted towards the injection port, the frustum block inserts first into the conical opening. Once fully inserted, the injection tube remains horizontal, allowing the material injector to continue advancing. This ensures precise insertion of the injection head into the injection port, preventing friction and scratches caused by injection head displacement. Attached Figure Description

[0016] Figure 1 These are schematic diagrams of the main body structure in the first and second embodiments of the present invention; Figure 2 These are schematic diagrams of the cross-sectional structure at the fixed mold body in the first and second embodiments of the present invention; Figure 3 These are schematic diagrams of the temperature control structure in the first and second embodiments of the present invention; Figure 4 This is a schematic diagram of the other side of the temperature control structure in the second embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the material injector in the second embodiment of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure at the template location in the second embodiment of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure at the positioning structure in the second embodiment of the present invention; Figure 8 This is a schematic diagram of the mold-closing power structure in the second embodiment of the present invention; Figure 9 This is a partial structural diagram of the mold closing power structure in the second embodiment of the present invention.

[0017] In the diagram: 1. Machine base; 2. Fixed mold plate; 3. Temperature control structure; 4. Moving mold plate; 5. Material injector; 6. Propulsion structure; 7. Positioning structure; 8. Guiding structure; 9. Mold closing power structure; 11. Side opening; 12. Slide rail; 21. Fixed mold body; 22. Liquid inlet male connector; 23. Liquid outlet male connector; 24. Liquid inlet transfer male connector; 25. Liquid outlet transfer male connector; 26. Liquid inlet hose; 27. Liquid outlet hose; 28. Liquid inlet female connector; 29. ​​Liquid outlet female connector; 210. Microchannel coil; 211. Injection port; 212. Cavity opening; 213. Through port; 31. Cold liquid inlet male connector; 32. Hot liquid inlet male connector. 33. Liquid inlet pipe; 34. Hot liquid inlet pipe; 35. Four-way switching valve; 36. Main liquid inlet pipe; 37. Liquid inlet transfer female connector; 38. Liquid return male connector; 39. Hot liquid return male connector; 310. Liquid return pipe; 311. Hot liquid return pipe; 312. Three-way switching valve; 313. Main return pipe; 314. Return transfer female connector; 315. Small air compressor; 316. Air pipe; 317. Purge pipe; 318. Pressure regulating valve; 319. High-speed solenoid valve; 320. Liquid tank; 321. Hot liquid tank; 322. Cold compartment; 323. Heating compartment; 324. Liquid return compartment; 325. Hot liquid reflux chamber; 326. First temperature control chamber; 327. Second temperature control chamber; 328. First circulating pump; 329. Second circulating pump; 330. First connecting pipe; 331. Second connecting pipe; 332. Base plate; 333. Chamber shell; 41. Moving mold cover; 42. Slide block; 43. Guide hole; 51. Injection tube; 52. Heater; 53. Injection head; 54. Feed pipe; 55. Hopper; 61. Platform; 62. U-shaped seat; 63. Lead screw; 64. Force plate; 65. Threaded sleeve; 66. Servo geared motor; 67. Guide rail; 68. Guide seat; 71. Sleeve; 72. Frustum block; 73. 74. Slip ring; 75. Inner groove; 76. Ear block; 77. Limiting rod; 78. Limiting hole; 79. Spring; 81. Seat; 82. Conical opening; 83. Ball bearing; 84. Through hole; 91. End block; 92. Optical shaft rod; 93. Side support plate; 94. Push plate; 95. Push frame; 96. First hinge block; 97. First connecting rod arm; 98. Second connecting rod arm; 99. Second hinge block; 910. Third hinge block; 911. Fourth hinge block; 912. Short connecting rod arm; 913. Side sliding groove; 914. Side slider; 915. Guide rod; 916. Guide hole; 917. Guide sleeve; 918. Hydraulic cylinder. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0019] Please see Figure 1-3 The present invention provides a technical solution: an injection molding machine structure with an in-mold rapid cooling circulation system, including a machine base 1, a material injector 5 is provided on one side of the top surface of the machine base 1, a fixed template 2 is fixedly connected to the middle of the top surface of the machine base 1, a mold closing power structure 9 is provided on the side of the top surface of the machine base 1 away from the material injector 5, a moving template 4 is horizontally slidably provided on the top surface of the machine base 1 between the mold closing power structure 9 and the fixed template 2, and a side opening 11 is opened on the machine base 1, and a temperature control structure 3 is provided in the side opening 11; The temperature control structure 3 includes a base plate 332, a housing 333 fixedly connected to the top surface of the base plate 332, a cold liquid inlet male connector 31 and a hot liquid inlet male connector 32 fixedly connected to the side wall of the housing 333, a cold liquid inlet male connector 31 fixedly connected to and connected to a cold liquid inlet pipe 33, a hot liquid inlet male connector 32 fixedly connected to and connected to a hot liquid inlet pipe 34, the ends of the cold liquid inlet pipe 33 and the hot liquid inlet pipe 34 fixedly connected to and connected to both ends of a four-way switching valve 35, a main inlet pipe 36 fixedly connected to and connected to the four-way switching valve 35, a small air compressor 315 fixedly connected to the top surface of the housing 333, and the output end of the small air compressor 315... A gas pipe 316 is fixedly connected and connected to the end of the gas pipe 316. A purge pipe 317 is fixedly connected and connected to the end of the purge pipe 317. A four-way switching valve 35 is fixedly connected and connected to the end of the purge pipe 317. A cold liquid return male connector 38 and a hot liquid return male connector 39 are also fixedly connected to the side wall of the shell 333. The cold liquid return male connector 38 is fixedly connected and connected to the cold liquid return pipe 310. The hot liquid return male connector 39 is fixedly connected and connected to the hot liquid return pipe 311. The ends of the cold liquid return pipe 310 and the hot liquid return pipe 311 are fixedly connected and connected to the three-way switching valve 312. The end of the three-way switching valve 312 is fixedly connected and connected to the main return pipe 313. The fixed mold plate 2 is fixedly connected to the fixed mold body 21 on the side near the moving mold plate 4. The microchannel coil 210 is fixedly connected inside the fixed mold body 21. The microchannel coil 210 is connected to the main liquid inlet pipe 36 and the main return pipe 313. The temperature control structure 3 can inject cold liquid or hot liquid into the microchannel coil 210. A small air compressor 315 is set to discharge residual liquid. In this way, during molding, hot liquid can be injected into the microchannel coil 210 to ensure the mold temperature and the fluidity of the melt. During the cooling stage, it switches to cold liquid. When switching, compressed air is blown in through the temperature control structure 3 to discharge the hot liquid. Then, cold liquid is injected to achieve rapid cooling. This avoids the phenomenon that the low mold temperature during molding causes poor fluidity of the melt. Moreover, it can also cool down quickly during the cooling stage, and the cooling effect is more comprehensive. Example 2

[0020] Please see Figure 1-9 This is the second embodiment of the present invention. Based on the previous embodiment, the fixed template 2 has an inlet male connector 22 and an outlet male connector 23 fixedly connected to its side wall. The fixed template 2 also has an inlet transfer male connector 24 and an outlet transfer male connector 25 fixedly connected to its side wall. The fixed mold body 21 has an inlet hose 26 and an outlet hose 27 fixedly connected to its side wall. The inlet hose 26 and outlet hose 27 are fixedly connected to and connected to the microchannel coil 210. The end of the inlet hose 26 is fixedly connected to and connected to the inlet female connector 28, which is inserted into and connected to the inlet male connector 22. The end of the outlet hose 27 is fixedly connected to and connected to the outlet female connector 29, which is inserted into and connected to the outlet male connector 210. 3. The male inlet connector 24 is connected to the male inlet connector 22, and the male outlet connector 25 is connected to the male outlet connector 23. The end of the main inlet pipe 36 is fixedly connected to and connected to the female inlet connector 37. The end of the main return pipe 313 is fixedly connected to and connected to the female return connector 314. The female inlet connector 37 is inserted and connected to the male inlet connector 24, and the female return connector 314 is inserted and connected to the male outlet connector 25. The pressure regulating valve 318 and the high-speed solenoid valve 319 are fixedly connected to and connected to the air pipe 316. They are quickly connected through the female inlet connector 28 and the female outlet connector 29. This allows for convenient and quick connection of the liquid circuit after replacing the fixed mold body 21.

[0021] The material injector 5 is provided with an injection tube 51 at one end near the moving template 4. The end of the injection tube 51 is fixedly connected to the injection head 53. A positioning structure 7 is sleeved on the end of the injection tube 51 near the injection head 53. The fixed template 2 is provided with a cavity 212 on one side near the material injector 5. A guide structure 8 is provided inside the cavity 212. A through-hole 213 is provided on the side wall of the cavity 212. The fixed mold body 21 is provided with an injection port 211 in the middle of one side near the fixed template 2. The injection port 211 is connected to the through-hole 213.

[0022] The positioning structure 7 includes a sleeve 71, which is fixedly sleeved on the end of the injection tube 51. A frustum block 72 is slidably sleeved on the sleeve 71. The diameter of the end of the frustum block 72 near the fixed template 2 is smaller than the diameter of the other end. A horizontal sliding hole 73 is opened on the frustum block 72, and the sliding hole 73 is slidably sleeved on the sleeve 71. An inner groove 75 is opened on the periphery of the sleeve 71. A sliding ring 74 is fixedly sleeved on the inner side of the sliding hole 73. The sliding ring 74 is slidably sleeved on the inner groove 75. A spring 79 is fixedly connected between the end of the sliding ring 74 and the end of the inner groove 75. Multiple ear blocks 76 are evenly fixed on the periphery of the end of the sleeve 71 away from the injection head 53. The end of a limiting rod 77 is fixedly connected to the side of the ear block 76 near the frustum block 72. A limiting hole 78 is opened on the side wall of the frustum block 72 corresponding to the position of each limiting rod 77. The limiting rod 77 is slidably inserted into the limiting hole 78.

[0023] The guide structure 8 includes a seat 81, which is fixedly fitted inside the cavity 212. A conical opening 82 is opened on the side of the seat 81 near the material injector 5. The diameter of the end of the conical opening 82 near the material injector 5 is larger than the diameter of the other end. A through hole 84 is opened on the side wall of the conical opening 82, which connects the conical opening 82 and the through opening 213. Multiple balls 83 are rolled on the side wall of the conical opening 82. The positioning structure 7 and the guide structure 8 cooperate with each other to achieve the positioning of the injection head 53. During injection, when the injection head 53 is inserted toward the injection port 211, the frustum block 72 will be inserted into the conical opening 82 first. After it is fully inserted, the position of the injection tube 51 can be guaranteed to be horizontal. The material injector 5 continues to advance. In this way, the injection head 53 can be accurately inserted into the injection port 211, avoiding the phenomenon of friction and scratching caused by the displacement of the injection head 53 during insertion.

[0024] The top surface inside the casing 333 is fixedly connected to a cold liquid tank 320 and a hot liquid tank 321. The bottom surface inside the casing 333 is fixedly connected to a cold compartment 322 and a heating compartment 323. The cold liquid tank 320 is connected to the cold compartment 322, and the hot liquid tank 321 is connected to the heating compartment 323. The side wall of the cold compartment 322 is horizontally fixedly connected to and connected to a cold liquid return compartment 324. The side wall of the heating compartment 323 is horizontally fixedly connected to and connected to a hot liquid return compartment 325. The bottom surface inside the casing 333 is also fixedly connected to a first circulation pump 328 and a second circulation pump 329. The first circulation pump 328 is connected to the cold compartment 322, and the second circulation pump 329 is connected to the heating compartment 323.

[0025] Inside the housing 333, above the first circulating pump 328 and the second circulating pump 329, are fixedly connected a first temperature regulating chamber 326 and a second temperature regulating chamber 327. The first temperature regulating chamber 326 is fixedly connected to the first circulating pump 328 and connected to a first connecting pipe 330. The second temperature regulating chamber 327 is fixedly connected to the second circulating pump 329 and connected to a second connecting pipe 331. The cold liquid inlet male connector 31 is connected to the cold liquid return chamber 324. The hot liquid inlet male connector 32 is connected to the hot liquid return chamber 325. The cold liquid return male connector 38 is connected to the first temperature regulating chamber 326. The hot liquid return male connector 39 is connected to the second temperature regulating chamber 327. Both the first temperature regulating chamber 326 and the second temperature regulating chamber 327 are equipped with cooling and heating structures to perform final temperature regulation of the liquid. The temperature control structure 3 can realize the supply of hot liquid and cold liquid.

[0026] The top surface of the machine base 1 is fixedly connected to the slide rail 12, the bottom surface of the moving template 4 is fixedly connected to the slide seat 42, the slide seat 42 is slidably connected to the slide rail 12, the moving template 4 is fixedly connected to the moving mold cover 41 on the side near the fixed template 2, multiple heaters 52 are fixedly sleeved on the injection tube 51, the top surface of the material injector 5 is fixedly connected to the feed pipe 54, the top end of the feed pipe 54 is fixedly connected to and connected to the hopper 55, the feed pipe 54 is connected to the injection tube 51, and the top surface of the machine base 1 is also fixedly connected to the propulsion structure 6.

[0027] The propulsion structure 6 includes a platform 61 fixed to the top surface of the machine base 1. A U-shaped seat 62 is horizontally slidably sleeved on the top surface of the platform 61. The material injector 5 is fixed to the top surface of the U-shaped seat 62. The top surface of the platform 61 has a concave structure. A lead screw 63 is horizontally rotatably connected to the inner side of the top surface of the platform 61. A force plate 64 is fixed to the bottom surface of the U-shaped seat 62. A threaded sleeve 65 is fixed to the force plate 64. The lead screw 63 is threadedly connected to the threaded sleeve 65. Two guide rails 67 are fixed to both sides of the top surface of the platform 61. Two guide seats 68 are fixed to both sides of the bottom surface of the U-shaped seat 62. The guide seats 68 are horizontally slidably connected to the guide rails 67. A servo reduction motor 66 is fixed to the end of the platform 61. The end of the lead screw 63 is fixed to the shaft end of the servo reduction motor 66. The propulsion structure 6 is used to carry the material injector 5 for movement, which facilitates the insertion and injection work.

[0028] The mold clamping power structure 9 includes an end block 91 fixed to the top surface of the end of the machine base 1. Four optical shafts 92 are horizontally fixed at the four corners of the end block 91. The ends of the four optical shafts 92 are fixed at the four corners of the fixed template 2. Four guide holes 43 are opened at the four corners of the moving template 4. The optical shafts 92 slide and fit into the guide holes 43. Two side support plates 93 are horizontally fixed to both sides of the end block 91. A push plate 94 is horizontally slidably arranged between the two side support plates 93. The push plate 94 is located between the moving template 4 and the end block 91. A push frame 95 is fixed to the side of the moving template 4 near the end block 91. Two first hinge blocks 96 are fixed to the top and bottom surfaces of the end block 91. Two second hinge blocks 99 are fixed to the top and bottom ends of the push frame 95. Each first hinge block 96 is rotatably connected to one end of a first connecting arm 97. The other end of the first connecting arm 97 is rotatably connected to one end of a second connecting arm 98. The other end of the second connecting arm 98 is rotatably connected to the second hinge block 99. Two third hinge blocks are fixed to the top and bottom ends of the push plate 94. Block 910, a fourth hinge block 911 is fixedly connected to the side wall of the first connecting arm 97 near the end of the second connecting arm 98. The third hinge block 910 is rotatably connected to one end of the short connecting arm 912, and the other end of the short connecting arm 912 is rotatably connected to the fourth hinge block 911. A hydraulic cylinder 918 is fixedly sleeved on the end block 91. The output end of the hydraulic cylinder 918 is fixedly connected to the side wall of the push plate 94. Four guide sleeves 917 are fixedly connected to the four corners of the push frame 95. The guide sleeves 917 are fixedly connected to the side wall of the moving template 4. The sleeve 917 is slidably connected to the optical shaft rod 92. The side support plate 93 has a side slide groove 913 on the side near the push plate 94. Two side sliders 914 are fixed on both sides of the push plate 94. The side sliders 914 are horizontally slidably connected in the side slide groove 913. The guide rod 915 is horizontally fixed in the side slide groove 913. The guide hole 916 is horizontally opened on the side slider 914. The guide rod 915 is slidably connected to the guide hole 916. The mold closing power structure 9 is used to drive the moving template 4 to move and realize mold closing.

[0029] In use, the material is added to the hopper 55, the mold-closing power structure 9 drives the moving template 4 to move and close the mold, then the temperature control structure 3 injects hot liquid into the microchannel coil 210 in the fixed mold body 21 and maintains circulation, the propulsion structure 6 drives the material injector 5 to move so that the injection head 53 is inserted into the injection port 211, and then the molten liquid is injected. After completion, in the cooling stage, the four-way switching valve 35 in the temperature control structure 3 switches so that the air pipe 316 is connected to the main liquid inlet pipe 36, and the small air compressor 315 injects liquid into the microchannel coil 210. Compressed air is injected to discharge the hot liquid from the main return pipe 313. Then, the four-way switching valve 35 and the three-way switching valve 312 are switched to inject cold liquid and circulate it for cooling. After cooling is complete, the mold closing power structure 9 drives the mold plate 4 to move and demold. Afterward, the four-way switching valve 35 in the temperature control structure 3 switches, connecting the air pipe 316 to the main liquid inlet pipe 36. The small air compressor 315 injects compressed air into the microchannel coil 210, discharging the cold liquid from the main return pipe 313, completing the operation and awaiting the next injection molding operation. The temperature control structure 3 can inject either cold liquid or hot liquid into the microchannel coil 210, and a small air compressor 315 is provided to discharge residual liquid. During molding, hot liquid can be injected into the microchannel coil 210 to maintain mold temperature and ensure the fluidity of the melt. During the cooling stage, the system switches to cold liquid. When switching, compressed air is blown in by the temperature control structure 3 to expel the hot liquid, and then cold liquid is injected again for circulation, achieving rapid cooling and preventing poor melt fluidity due to low mold temperature during molding. Moreover, it can quickly cool down during the cooling stage, resulting in a more comprehensive cooling effect. In this invention, the positioning structure 7 and the guiding structure 8 work together to position the injection head 53. During injection, when the injection head 53 is inserted into the injection port 211, the frustum block 72 will first insert into the conical port 82. After complete insertion, the position of the injection tube 51 can be guaranteed to be horizontal, and the material injector 5 continues to advance. In this way, the injection head 53 can be accurately inserted into the injection port 211, avoiding friction and scratching caused by the displacement of the injection head 53 during insertion.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid in-mold cooling circulation system injection molding machine structure, comprising a machine base (1), characterized in that: A material injector (5) is provided on one side of the top surface of the machine (1). A fixed template (2) is fixedly connected to the middle of the top surface of the machine (1). A mold closing power structure (9) is provided on the side of the top surface of the machine (1) away from the material injector (5). A moving template (4) is horizontally slidably provided on the top surface of the machine (1) between the mold closing power structure (9) and the fixed template (2). A side opening (11) is opened on the machine (1). A temperature control structure (3) is provided inside the side opening (11). The temperature control structure (3) includes a base plate (332), the top surface of which is fixedly connected to a housing (333). The side walls of the housing (333) are fixedly connected to a cold liquid inlet male connector (31) and a hot liquid inlet male connector (32). The cold liquid inlet male connector (31) is fixedly connected to and connected to a cold liquid inlet pipe (33). The hot liquid inlet male connector (32) is fixedly connected to and connected to a hot liquid inlet pipe (34). The ends of the cold liquid inlet pipe (33) and the hot liquid inlet pipe (34) are fixedly connected to and connected to both ends of a four-way switching valve (35). The four-way switching valve (35) is also fixedly connected to and connected to a main inlet pipe (36). The top surface of the housing (333) is fixedly connected to a small air compressor (315). The output end of the small air compressor (315) is fixedly connected to and connected to an air pipe (316). The purge pipe (317) is fixedly connected to the end of the air pipe (316), and the purge pipe (317) is fixedly connected to the end of the four-way switching valve (35). The side wall of the chamber shell (333) is also fixedly connected to a cold liquid return male connector (38) and a hot liquid return male connector (39). The cold liquid return male connector (38) is fixedly connected to the cold liquid return pipe (310), and the hot liquid return male connector (39) is fixedly connected to the hot liquid return pipe (311). The ends of the cold liquid return pipe (310) and the hot liquid return pipe (311) are fixedly connected to the three-way switching valve (312). The end of the three-way switching valve (312) is fixedly connected to the main return pipe (313). The pressure regulating valve (318) and the high-speed solenoid valve (319) are fixedly connected to the air pipe (316). The fixed template (2) is fixed to the fixed mold body (21) on the side near the moving template (4). The fixed mold body (21) is fixed to the microchannel coil (210). The microchannel coil (210) is connected to the main liquid inlet pipe (36) and the main return pipe (313).

2. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 1, characterized in that: The fixed template (2) is fixedly connected to the side wall of the liquid inlet male connector (22) and the liquid outlet male connector (23). The fixed template (2) is also fixedly connected to the side wall of the liquid inlet transfer male connector (24) and the liquid outlet transfer male connector (25). The fixed mold body (21) is fixedly connected to the side wall of the liquid inlet hose (26) and the liquid outlet hose (27). The liquid inlet hose (26) and the liquid outlet hose (27) are fixedly connected to and connected to the microchannel coil (210). The end of the liquid inlet hose (26) is fixedly connected to and connected to the liquid inlet female connector (28). The liquid inlet female connector (28) is inserted into and connected to the liquid inlet male connector (22). The end of the liquid outlet hose (27) is fixedly connected to and connected to the liquid outlet... The female connector (29) is inserted into and connected to the male connector (23). The male connector (24) is connected to the male connector (22). The male connector (25) is connected to the male connector (23). The end of the main inlet pipe (36) is fixed and connected to the female connector (37). The end of the main return pipe (313) is fixed and connected to the female connector (314). The female connector (37) is inserted into and connected to the male connector (24). The female connector (314) is inserted into and connected to the male connector (25).

3. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 1, characterized in that: The material injector (5) is provided with an injection tube (51) at one end near the moving template (4). The injection tube (51) is fixed to an injection head (53). A positioning structure (7) is sleeved on the end of the injection tube (51) near the injection head (53). The fixed template (2) is provided with a cavity (212) on one side near the material injector (5). A guide structure (8) is provided inside the cavity (212). A through-hole (213) is provided on the side wall of the cavity (212). An injection port (211) is provided in the middle of the fixed mold body (21) near the fixed template (2). The injection port (211) is connected to the through-hole (213).

4. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 3, characterized in that: The positioning structure (7) includes a sleeve (71), which is fixedly sleeved on the end of the injection tube (51). A frustum block (72) is slidably sleeved on the sleeve (71). The diameter of the frustum block (72) near the fixed template (2) is smaller than the diameter of the other end. A horizontal sliding hole (73) is opened on the frustum block (72). The sliding hole (73) is slidably sleeved on the sleeve (71). An inner groove (75) is opened on the periphery of the sleeve (71). A sliding ring (7) is fixedly sleeved inside the sliding hole (73). 4) The slip ring (74) is slidably sleeved on the inner groove (75), and a spring (79) is fixed between the slip ring (74) and the end of the inner groove (75). Multiple ear blocks (76) are evenly fixed to the periphery of the sleeve (71) away from the injection head (53). The end of the limiting rod (77) is fixed to the side of the ear block (76) near the frustum block (72). A limiting hole (78) is opened on the side wall of the frustum block (72) corresponding to the position of each limiting rod (77). The limiting rod (77) is slidably inserted into the limiting hole (78).

5. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 4, characterized in that: The guide structure (8) includes a seat (81), which is fixedly sleeved inside the cavity (212). A conical opening (82) is opened on the side of the seat (81) near the material injector (5). The diameter of the conical opening (82) at the end near the material injector (5) is larger than the diameter at the other end. A through hole (84) is opened on the side wall of the conical opening (82). The through hole (84) connects the conical opening (82) and the through port (213). Multiple balls (83) are rolledly connected to the side wall of the conical opening (82).

6. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 1, characterized in that: The top surface inside the casing (333) is fixed to a cold liquid tank (320) and a hot liquid tank (321). The bottom surface inside the casing (333) is fixed to a cold compartment (322) and a heating compartment (323). The cold liquid tank (320) is connected to the cold compartment (322). The hot liquid tank (321) is connected to the heating compartment (323). The side wall of the cold compartment (322) is horizontally fixed to and connected to a cold liquid return compartment (324). The side wall of the heating compartment (323) is horizontally fixed to and connected to a hot liquid return compartment (325). The bottom surface inside the casing (333) is also fixed to a first circulation pump (328) and a second circulation pump (329). The first circulation pump (328) is connected to the cold compartment (322). The second circulation pump (329) is connected to the heating compartment (323).

7. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 6, characterized in that: Inside the housing (333), above the first circulation pump (328) and the second circulation pump (329), the first temperature regulating chamber (326) and the second temperature regulating chamber (327) are fixedly connected. The first temperature regulating chamber (326) is fixedly connected to the first circulation pump (328) and connected to the first connecting pipe (330). The second temperature regulating chamber (327) is fixedly connected to the second circulation pump (329) and connected to the second connecting pipe (331). The cold liquid inlet male connector (31) is connected to the cold liquid return chamber (324). The hot liquid inlet male connector (32) is connected to the hot liquid return chamber (325). The cold liquid return male connector (38) is connected to the first temperature regulating chamber (326). The hot liquid return male connector (39) is connected to the second temperature regulating chamber (327).

8. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 3, characterized in that: The top surface of the machine base (1) is fixedly connected to the slide rail (12), the bottom surface of the moving template (4) is fixedly connected to the slide seat (42), the slide seat (42) is slidably connected to the slide rail (12), the moving template (4) is fixedly connected to the moving mold cover (41) on the side near the fixed template (2), multiple heaters (52) are fixedly sleeved on the injection tube (51), the top surface of the material injector (5) is fixedly connected to the feed pipe (54), the top end of the feed pipe (54) is fixedly connected to and connected to the hopper (55), the feed pipe (54) is connected to the injection tube (51), and the top surface of the machine base (1) is also fixedly connected to the propulsion structure (6).

9. The injection molding machine structure of an in-mold rapid cooling circulation system according to claim 8, characterized in that: The propulsion structure (6) includes a platform (61) fixed to the top surface of the machine base (1), a U-shaped seat (62) horizontally slidingly sleeved on the top surface of the platform (61), a material injector (5) fixed to the top surface of the U-shaped seat (62), the top surface of the platform (61) is a concave structure, a lead screw (63) is horizontally rotatably connected to the inner side of the top surface of the platform (61), a force-bearing plate (64) is fixed to the bottom surface of the U-shaped seat (62), a threaded sleeve (65) is fixed to the force-bearing plate (64), the lead screw (63) is threadedly connected to the threaded sleeve (65), two guide rails (67) are fixed to both sides of the top surface of the platform (61), two guide seats (68) are fixed to both sides of the bottom surface of the U-shaped seat (62), the guide seats (68) are horizontally slidably connected to the guide rails (67), a servo reduction motor (66) is fixed to the end of the platform (61), and the end of the lead screw (63) is fixed to the shaft end of the servo reduction motor (66).

10. The injection molding machine structure of the in-mold rapid cooling circulation system according to claim 1, characterized in that: The mold-closing power structure (9) includes an end block (91) fixed to the top surface of the end of the machine base (1). Four optical shafts (92) are horizontally fixed at the four corners of the end block (91). The ends of the four optical shafts (92) are fixed at the four corners of the fixed template (2). Four guide holes (43) are opened at the four corners of the moving template (4). The optical shafts (92) slide and fit into the guide holes (43). Two side support plates (93) are horizontally fixed on both sides of the end block (91). A push plate (94) is horizontally slidably arranged between the two side support plates (93). The push plate (94) is located on the moving template (4). The position between the template (4) and the end block (91) is such that the movable template (4) is fixedly connected to the push frame (95) on the side near the end block (91), two first hinge blocks (96) are fixedly connected to the top and bottom surfaces of the end block (91), and two second hinge blocks (99) are fixedly connected to the top and bottom ends of the push frame (95). Each first hinge block (96) is rotatably connected to one end of a first connecting arm (97), and the other end of the first connecting arm (97) is rotatably connected to one end of a second connecting arm (98). The other end of the second connecting arm (98) is rotatably connected to the second hinge block (99). The push plate (94) is... Two third hinge blocks (910) are fixed to the top and bottom of the first connecting arm (97). A fourth hinge block (911) is fixed to the side wall of the first connecting arm (97) near the end of the second connecting arm (98). The third hinge block (910) is rotatably connected to one end of the short connecting arm (912). The other end of the short connecting arm (912) is rotatably connected to the fourth hinge block (911). A hydraulic cylinder (918) is fixedly sleeved on the end block (91). The output end of the hydraulic cylinder (918) is fixedly connected to the side wall of the push plate (94). Four guide sleeves (917) are fixed at the four corners of the push frame (95). (917) is fixed to the side wall of the moving template (4). The guide sleeve (917) is slidably sleeved with the optical shaft rod (92). The side support plate (93) has a side sliding groove (913) on the side near the push plate (94). Two side sliders (914) are fixed on both sides of the push plate (94). The side sliders (914) are horizontally slidably connected in the side sliding groove (913). The guide rod (915) is horizontally fixed in the side sliding groove (913). The guide hole (916) is horizontally opened on the side slider (914). The guide rod (915) is slidably sleeved with the guide hole (916).

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