A plastic injection mold capable of improving hot runner flow

CN116587530BActive Publication Date: 2026-06-23MICOTEC(SHENZHEN) LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MICOTEC(SHENZHEN) LTD
Filing Date
2023-04-21
Publication Date
2026-06-23

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Abstract

The application discloses a plastic injection mold capable of improving hot runner flow, and relates to the technical field of plastic injection molds. The injection mold body comprises an injection device and an injection device connected to the front end of the injection device. The bottom end, middle end and top end of the injection device are respectively provided with a movable mold bottom plate, a movable mold template and a fixed mold template. The top surface of the fixed mold template is provided with a docking assembly. The docking assembly comprises a driving motor, a driving wheel connected to the bottom end of the driving motor, a driving belt sleeved on the outer circle of the driving wheel, an auxiliary wheel clamped on the inner circle of the other end of the driving belt, and a cutter connected to the outer circle of the driving belt. The application has the advantages that when the fixed mold template exerts pressure on the injection nozzle, the plastic liquid in the sleeve enters the inside of the injection device through the pouring hole, so that the liquid can be quickly poured into the inside of the injection device during injection, and the speed of the pressurized plastic liquid entering the inside of the injection device is increased through cooperation with the compression rod.
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Description

Technical Field

[0001] This invention relates to the field of plastic injection mold technology, specifically to a plastic injection mold that can improve the flow of hot runners. Background Technology

[0002] Double parting surface injection molds have two parting surfaces. Compared with single parting surface injection molds, double parting surface injection molds have an additional movable intermediate plate in the fixed mold part, also called a movable sprue plate, which is equipped with sprues, runners and other parts and components required by the fixed mold.

[0003] Currently, most two-part injection molds require the removal of their three parts sequentially to separate them, which is a complex operation and inconvenient for adjustment. Furthermore, due to the complexity of the two-part injection mold, demolding the molded object after injection molding is also cumbersome. Therefore, we propose a plastic injection mold that can improve the flow of hot runners. Summary of the Invention

[0004] The purpose of this invention is to provide a plastic injection mold that can improve the flow of hot runners.

[0005] To address the problems mentioned in the background art, the present invention provides the following technical solution: a plastic injection mold that improves hot runner flow, comprising an injection mold body, the injection mold body including an injection molding machine and an injection device connected to the front end of the injection molding machine, the bottom, middle and top ends of the injection molding machine being respectively provided as a moving mold base plate, a moving mold template and a fixed mold template, the top surface of the fixed mold template being equipped with a docking assembly, the docking assembly including a drive motor, a drive wheel connected to the bottom end of the drive motor, a drive belt sleeved on the outer ring of the drive wheel, an auxiliary wheel snapped into the inner ring of the other end of the drive belt, and a cutter connected to the outer ring of the drive belt, the injection device including an injection nozzle, a sleeve connected to the rear end of the injection nozzle, a heating coil sleeved on the outer ring of the sleeve, a feed hopper installed near the top surface of the sleeve near the rear end, a compression rod inserted into the rear end of the sleeve, and a synchronization assembly connecting the injection nozzle and the compression rod, a disconnection assembly installed between the injection molding machine and the injection device, the disconnection assembly including a support frame, a compression spring connected to the bottom surface of the support frame, and a spring plate connected to the other end of the compression spring.

[0006] As a further embodiment of the present invention: a model is mounted on the top surface of the moving mold base plate, and a model groove is opened on the bottom surface of the moving mold template. Circular holes are opened at the four corners of the bottom surface of the moving mold template, and hydraulic rods are installed inside the circular holes. A sealing groove is installed on the top surface of the moving mold template, and the bottom surface of the moving mold template is fastened to the top surface of the moving mold base plate. A sealing plate is mounted on the bottom surface of the fixed mold template, and the sealing plate is fastened to the inside of the sealing groove. An injection hole is opened on the top surface of the fixed mold template, and the injection hole is located at the center of the top surface of the model groove. Fixing holes and adjustment holes are respectively opened on both sides of the injection hole on the top surface of the fixed mold template.

[0007] As a further embodiment of the present invention: the bottom surface of the drive motor is connected to the top surface of the support plate, and a hole is provided on the top surface of the front end of the support plate. The front end of the drive motor is inserted into the hole. The bottom surface of the support plate and the top surface of the fixed mold template are fixedly connected. The bottom end of the drive motor passes through the inside of the drive wheel and extends into the inside of the fixing hole. A fixing bolt is installed inside the auxiliary wheel, and the bottom end of the fixing bolt rotates in the adjustment hole. The drive belt is adjusted on the outer ring of the drive wheel and the auxiliary wheel. The rear end of the cutter is fixedly connected to the bottom surface of the drive belt.

[0008] As a further aspect of the present invention: the rear end of the injection nozzle is sealed and snapped into the interior of the rebound plate; the rear end of the injection nozzle is configured as an extension rod; a constant temperature ring is sleeved on the extension rod near the front end periphery; the interior of the sleeve is hollow, and the front and rear ends are respectively connected to the extension rod and the compression rod; the outer wall of the compression rod and the inner wall of the sleeve are tightly connected; the inner ring of the heating coil is sleeved on the outer ring of the sleeve, and the heating coil is larger in volume than the constant temperature ring.

[0009] As a further aspect of the present invention: the top surface of the rear end of the sleeve is provided with a feed hole, and the top surface of the feed hole and the bottom surface of the feed hopper are sealed together. The feed hopper is hollow inside and the top is expanded.

[0010] As a further aspect of the present invention: the synchronization component includes a stabilizing block, a rotating gear mounted on the top surface of the stabilizing block, the rotating gear, and a rack. The top surface of the stabilizing block is connected to the bottom surface of the rotating gear, but the two are not fixedly connected. Two sets of racks are provided, both mounted on both sides of the rotating gear. A collar is welded to the top of the front end of the rack, and the collar is respectively connected to the outer ring of the extension rod and the compression rod.

[0011] As a further embodiment of the present invention: a base is installed below the injection mold body, a groove is provided on the top surface of the base near the injection molding equipment, and a lead screw is installed between the inner walls of the groove. A push plate is sleeved on the outer ring of the lead screw, and the bottom surface of the stabilizing block is fixedly connected to the top surface of the base.

[0012] As a further embodiment of the present invention: the top surface of the support frame is provided with a connecting hole, and two compression springs are provided. The top and bottom ends of the compression springs are respectively installed on the bottom surface of the support frame and the top surface of the rebound plate. The top surface of the rebound plate is also provided with a connecting hole.

[0013] Compared with the prior art, the beneficial effects of the present invention, using the above technical solution, are as follows:

[0014] 1. The push plate shifts towards the injection equipment, and the surface of the fixed mold plate applies pressure to the injection nozzle. The rear end of the extension rod slowly enters the interior of the sleeve. When the extension rod moves backward, the rotating gear inside the synchronous component rotates, driving the racks connected on both sides. The racks are provided in two sets, which are respectively connected to the extension rod and the compression rod. The movement path is simultaneously outward or inward. Thus, when the fixed mold plate applies pressure to the injection nozzle, the plastic liquid inside the sleeve enters the interior of the injection equipment through the filling hole. This allows the liquid to be quickly poured into the interior of the injection equipment during injection. In conjunction with the compression rod, it increases the speed at which the plastic liquid enters the injection equipment.

[0015] 2. When the surface of the fixed mold plate applies pressure to the injection nozzle, the front end of the injection nozzle aligns with the filling hole on the top surface of the fixed mold plate. Conversely, when no pressure is applied, the two stop contacting each other. At the same time, the drive motor starts working, using the drive wheel and auxiliary wheel to make the drive belt move at high speed. The bottom surface of the cutter is tightly connected to the top surface of the fixed mold plate. The cutter moves synchronously with the drive belt. When it passes between the injection nozzle and the filling hole, it cuts off the overflowing liquid plastic. At the same time, when no pressure is applied to the injection nozzle, the synchronous component drives the compression rod to move backward, so that the liquid plastic inside the extension rod is drawn into the inside of the sleeve, preventing the liquid plastic from overflowing from the front end of the injection nozzle.

[0016] 3. When injection stops, the injection nozzle moves forward slowly. At the same time, the spring plate inside the disconnect component pulls the injection nozzle out of the filling hole. The liquid plastic inside the injection nozzle is continuously heated by the cooling component inside the injection equipment through the thermostatic ring installed on the outer ring of the front end of the extension rod, so that the liquid plastic inside the extension rod is always in a liquid state. Only when the compression rod moves backward can the liquid plastic be drawn into the sleeve for continuous high-temperature melting. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the injection mold body in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram showing the location of the disconnected component in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram showing the disassembly of the docking component and the fixed mold template in an embodiment of the present invention;

[0020] Figure 4 This is a three-dimensional schematic diagram of the base in an embodiment of the present invention;

[0021] Figure 5 This is a three-dimensional schematic diagram of the injection device in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram showing the location of the synchronization component in an embodiment of the present invention;

[0023] Figure 7 This is a three-dimensional schematic diagram of the disconnection component in an embodiment of the present invention;

[0024] Figure 8 This is a three-dimensional schematic diagram of the docking components in an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of the disassembled injection molding equipment in an embodiment of the present invention;

[0026] Figure 10 This is a schematic diagram of the model slot position in an embodiment of the present invention.

[0027] In the diagram: 1. Injection mold body; 2. Injection molding equipment; 21. Moving mold base plate; 211. Mold; 22. Moving mold template; 221. Mold groove; 222. Circular hole; 223. Hydraulic rod; 224. Sealing groove; 23. Fixed mold template; 231. Sealing plate; 232. Filling hole; 233. Fixing hole; 234. Adjusting hole; 24. Connecting assembly; 241. Drive motor; 242. Drive wheel; 243. Drive belt; 244. Auxiliary wheel; 2441. Fixing bolt; 245. Cutting blade; 25. 3. Support plate; 3. Injection equipment; 31. Injection nozzle; 311. Extension rod; 312. Thermostatic ring; 32. Sleeve; 321. Feed hole; 33. Heating coil; 34. Feed hopper; 35. Compression rod; 36. Synchronization assembly; 361. Stabilizing block; 362. Rotary gear; 363. Rack; 364. Collar; 37. Base; 371. Slide groove; 372. Lead screw; 373. Push plate; 4. Disconnection assembly; 41. Support frame; 411. Connection hole; 42. Compression spring; 43. Rebound plate. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Example 1

[0030] Please see Figures 1-10This invention provides a technical solution: a plastic injection mold that can improve the flow of hot runners, comprising an injection mold body 1, the injection mold body 1 including an injection molding equipment 2 and an injection device 3 connected to the front end of the injection molding equipment 2, the bottom, middle and top ends of the injection molding equipment 2 being respectively provided as a moving mold base plate 21, a moving mold template 22 and a fixed mold template 23, the top surface of the fixed mold template 23 being equipped with a docking assembly 24, the docking assembly 24 including a drive motor 241, a drive wheel 242 connected to the bottom end of the drive motor 241, a drive belt 243 sleeved on the outer ring of the drive wheel 242, and an auxiliary device engaged on the inner ring of the other end of the drive belt 243. The auxiliary wheel 244 and the cutter 245 are connected to the outer ring of the drive belt 243. The injection device 3 includes an injection nozzle 31, a sleeve 32 connected to the rear end of the injection nozzle 31, a heating coil 33 sleeved on the outer ring of the sleeve 32, a feed hopper 34 installed on the top surface of the sleeve 32 near the rear end, a compression rod 35 inserted into the rear end of the sleeve 32, and a synchronization component 36 connecting the injection nozzle 31 and the compression rod 35. A disconnection component 4 is installed between the injection molding device 2 and the injection device 3. The disconnection component 4 includes a support frame 41, a compression spring 42 connected to the bottom surface of the support frame 41, and a spring plate 43 connected to the other end of the compression spring 42.

[0031] Please see Figure 2A model 211 is mounted on the top surface of the moving mold base plate 21, and a model groove 221 is opened on the bottom surface of the moving mold template 22. Circular holes 222 are opened at the four corners of the bottom surface of the moving mold template 22, and hydraulic rods 223 are installed inside the circular holes 222. A sealing groove 224 is installed on the top surface of the moving mold template 22, and the bottom surface of the moving mold template 22 is fastened to the top surface of the moving mold base plate 21. A sealing plate 231 is mounted on the bottom surface of the fixed mold template 23, and the sealing plate 231 is fastened to the inside of the sealing groove 224. An injection hole 232 is opened on the top surface of the fixed mold template 23, and the injection hole 232 is located at the center of the top surface of the model groove 221. The top surface of the fixed mold template 23 has a fixing hole 233 and an adjustment hole 234 on both sides of the filling hole 232. The bottom surface of the drive motor 241 is connected to the top surface of the support plate 25, and the front end of the support plate 25 has a hole. The front end of the drive motor 241 is inserted into the hole. The bottom surface of the support plate 25 and the top surface of the fixed mold template 23 are fixedly connected. The bottom end of the drive motor 241 passes through the inside of the drive wheel 242 and extends into the inside of the fixing hole 233. A fixing bolt 2441 is installed inside the auxiliary wheel 244, and the bottom end of the fixing bolt 2441 rotates. Within the adjustment hole 234, the drive belt 243 is adjusted to the outer ring of the drive wheel 242 and the auxiliary wheel 244. The rear end of the cutter 245 is fixedly connected to the bottom surface of the drive belt 243. The rear end of the injection nozzle 31 is sealed and snapped into the interior of the spring plate 43. The rear end of the injection nozzle 31 is configured as an extension rod 311. A constant temperature ring 312 is sleeved on the outer periphery of the extension rod 311 near the front end. The interior of the sleeve 32 is hollow, and the front and rear ends are respectively connected to the extension rod 311 and the compression rod 35. The outer wall of the compression rod 35 is tightly connected to the inner wall of the sleeve 32. The inner ring of the heating coil 33... The heating coil 33 is larger in volume than the constant temperature ring 312 and is fitted onto the outer ring of the sleeve 32. The synchronization component 36 includes a stabilizing block 361, a rotating gear 362 mounted on the top surface of the stabilizing block 361, a rotating gear 362 and a rack 363. The top surface of the stabilizing block 361 is connected to the bottom surface of the rotating gear 362, but the two are not fixedly connected. There are two sets of racks 363, which are installed on both sides of the rotating gear 362. A collar 364 is welded to the top of the front end of the rack 363, and the collar 364 is connected to the outer ring of the extension rod 311 and the compression rod 35 respectively.

[0032] In this embodiment, the heating coil 33 and the constant temperature ring 312 have the same function, which is to heat the plastic raw material. The purpose is to facilitate the plastic raw material to enter the injection molding equipment 2, so as to complete the injection molding effect.

[0033] During use, the push plate 373 shifts towards the injection device 3, and the surface of the fixed mold plate 23 applies pressure to the injection nozzle 31. The rear end of the extension rod 311 slowly enters the interior of the sleeve 32. When the extension rod 311 moves backward, the rotating gear 362 inside the synchronization component 36 rotates, driving the racks 363 connected on both sides. The racks 363 are provided in two sets, which are respectively connected to the extension rod 311 and the compression rod 35, and their movement paths are simultaneously outward or inward. Thus, when the fixed mold plate 23 applies pressure to the injection nozzle 31, the plastic liquid inside the sleeve 32 enters the interior of the injection device 2 through the filling hole 232. This allows the liquid to be quickly poured into the interior of the injection device 2 during injection, and cooperates with the compression rod 35 to increase the speed at which the plastic liquid enters the injection device 2.

[0034] Example 2

[0035] Please see Figures 1-10 This invention provides a technical solution: a plastic injection mold that can improve the flow of hot runners, comprising an injection mold body 1, the injection mold body 1 including an injection molding equipment 2 and an injection device 3 connected to the front end of the injection molding equipment 2, the bottom, middle and top ends of the injection molding equipment 2 being respectively provided as a moving mold base plate 21, a moving mold template 22 and a fixed mold template 23, the top surface of the fixed mold template 23 being equipped with a docking assembly 24, the docking assembly 24 including a drive motor 241, a drive wheel 242 connected to the bottom end of the drive motor 241, a drive belt 243 sleeved on the outer ring of the drive wheel 242, and an auxiliary device engaged on the inner ring of the other end of the drive belt 243. The auxiliary wheel 244 and the cutter 245 are connected to the outer ring of the drive belt 243. The injection device 3 includes an injection nozzle 31, a sleeve 32 connected to the rear end of the injection nozzle 31, a heating coil 33 sleeved on the outer ring of the sleeve 32, a feed hopper 34 installed on the top surface of the sleeve 32 near the rear end, a compression rod 35 inserted into the rear end of the sleeve 32, and a synchronization component 36 connecting the injection nozzle 31 and the compression rod 35. A disconnection component 4 is installed between the injection molding device 2 and the injection device 3. The disconnection component 4 includes a support frame 41, a compression spring 42 connected to the bottom surface of the support frame 41, and a spring plate 43 connected to the other end of the compression spring 42.

[0036] Please see Figures 7-9A model 211 is mounted on the top surface of the moving mold base plate 21, and a model groove 221 is opened on the bottom surface of the moving mold template 22. Circular holes 222 are opened at the four corners of the bottom surface of the moving mold template 22, and hydraulic rods 223 are installed inside the circular holes 222. A sealing groove 224 is installed on the top surface of the moving mold template 22, and the bottom surface of the moving mold template 22 is fastened to the top surface of the moving mold base plate 21. A sealing plate 231 is mounted on the bottom surface of the fixed mold template 23, and the sealing plate 231 is fastened to the inside of the sealing groove 224. An injection hole 232 is opened on the top surface of the fixed mold template 23, located at the center of the top surface of the model groove 221. Fixing holes 233 and adjusting holes 234 are respectively opened on both sides of the injection hole 232 on the top surface of the fixed mold template 23. The synchronization component 36 includes a stabilizing block 361, a rotating gear 362 mounted on the top surface of the stabilizing block 361, a rotating gear 362, and a rack 363. The surface of the rack 363 is connected to the bottom surface of the rotating gear 362, but the two are not fixedly connected. There are two sets of racks 363, which are installed on both sides of the rotating gear 362. The top of the front end of the rack 363 is welded with a collar 364, and the collar 364 is connected to the outer ring of the extension rod 311 and the compression rod 35 respectively. A base 37 is installed below the injection mold body 1. A groove 371 is opened on the top surface of the base 37 near the injection molding equipment 2. A lead screw 372 is installed between the inner walls of the groove 371. A push plate 373 is sleeved on the outer ring of the lead screw 372. The bottom surface of the stabilizing block 361 is fixedly connected to the top surface of the base 37. A connection hole 411 is opened on the top surface of the support frame 41. Two compression springs 42 are provided. The top and bottom ends of the compression springs 42 are respectively installed on the bottom surface of the support frame 41 and the top surface of the rebound plate 43. A connection hole 411 is also opened on the top surface of the rebound plate 43.

[0037] In this embodiment, the cutter 245 is in contact with the surface of the fixed mold template 23, so that when it passes the surface of the filling hole 323, the plastic liquid can be quickly cut off. When the filling hole 323 and the injection nozzle 31 come into contact, the drive motor 241 stops working.

[0038] When pressure is applied to the injection nozzle 31 by the surface of the fixed mold plate 23 during use, the front end of the injection nozzle 31 aligns with the filling hole 232 on the top surface of the fixed mold plate 23. Conversely, when no pressure is applied, the two stop contacting each other. At the same time, the drive motor 241 starts working, using the drive wheel 242 and the auxiliary wheel 244 to make the drive belt 243 move at high speed. The bottom surface of the cutter 245 is tightly connected to the top surface of the fixed mold plate 23. The cutter 245 moves synchronously with the drive belt 243. When it passes between the injection nozzle 31 and the filling hole 232, it cuts off the overflowing plastic liquid. At the same time, when no pressure is applied to the injection nozzle 31, the synchronization component 36 drives the compression rod 35 to move backward, so that the plastic liquid inside the extension rod 311 is drawn into the sleeve 32, preventing the plastic liquid from overflowing from the front end of the injection nozzle 31.

[0039] Example 3

[0040] Please see Figures 1-10 This invention provides a technical solution: a plastic injection mold that can improve the flow of hot runners, comprising an injection mold body 1, the injection mold body 1 including an injection molding equipment 2 and an injection device 3 connected to the front end of the injection molding equipment 2, the bottom, middle and top ends of the injection molding equipment 2 being respectively provided as a moving mold base plate 21, a moving mold template 22 and a fixed mold template 23, the top surface of the fixed mold template 23 being equipped with a docking assembly 24, the docking assembly 24 including a drive motor 241, a drive wheel 242 connected to the bottom end of the drive motor 241, a drive belt 243 sleeved on the outer ring of the drive wheel 242, and an auxiliary device engaged on the inner ring of the other end of the drive belt 243. The auxiliary wheel 244 and the cutter 245 are connected to the outer ring of the drive belt 243. The injection device 3 includes an injection nozzle 31, a sleeve 32 connected to the rear end of the injection nozzle 31, a heating coil 33 sleeved on the outer ring of the sleeve 32, a feed hopper 34 installed on the top surface of the sleeve 32 near the rear end, a compression rod 35 inserted into the rear end of the sleeve 32, and a synchronization component 36 connecting the injection nozzle 31 and the compression rod 35. A disconnection component 4 is installed between the injection molding device 2 and the injection device 3. The disconnection component 4 includes a support frame 41, a compression spring 42 connected to the bottom surface of the support frame 41, and a spring plate 43 connected to the other end of the compression spring 42.

[0041] Please see Figures 5-6 The rear end of the injection nozzle 31 is sealed and snapped into the interior of the rebound plate 43. The rear end of the injection nozzle 31 is set as an extension rod 311. A thermostatic ring 312 is sleeved on the outer periphery of the extension rod 311 near the front end. The interior of the sleeve 32 is hollow, and the front and rear ends are respectively connected to the extension rod 311 and the compression rod 35. The outer wall of the compression rod 35 is tightly connected to the inner wall of the sleeve 32. The inner ring of the heating coil 33 is sleeved on the outer ring of the sleeve 32, and the heating coil 33 is larger in volume than the thermostatic ring 312.

[0042] In this embodiment, the sleeve 32 and the compression rod 35 cooperate to form a sealed cylinder inside, which can work with the injection nozzle 31 to inject liquid plastic into the injection molding equipment 2 during injection molding. Conversely, it can stop injection and draw the liquid plastic inside the extension rod 311 back into the sleeve 32 for high-temperature melting.

[0043] During use, the injection nozzle 31 moves forward slowly when injection stops, and the spring plate 43 inside the disconnect component pulls the injection nozzle 31 out of the filling hole 232. The plastic liquid inside the injection nozzle 31 is continuously heated by the cooling component inside the injection molding equipment 2 through the constant temperature ring 312 installed on the outer ring of the front end of the extension rod 311, so that the plastic liquid inside the extension rod 311 is always in a liquid state. Only when the compression rod 35 moves backward can the plastic liquid be drawn into the sleeve 32 for continuous high-temperature melting.

[0044] Working principle: First, when injection stops, the injection nozzle 31 moves forward slowly. Simultaneously, the spring plate 43 inside the disconnect assembly pulls the injection nozzle 31 out of the filling hole 232. The molten plastic inside the injection nozzle 31 is continuously heated by the cooling components inside the injection molding equipment 2 and by the thermostatic ring 312 installed on the outer ring of the front end of the extension rod 311, keeping the molten plastic inside the extension rod 311 in a liquid state. Only when the compression rod 35 moves backward can the molten plastic be drawn into the sleeve 32 for continuous high-temperature melting. Secondly, the push plate 373 shifts towards the injection device 3, and the surface of the fixed mold plate 23 applies pressure to the injection nozzle 31. The rear end of the extension rod 311 slowly enters the interior of the sleeve 32. When the extension rod 311 moves backward, the rotating gear 362 inside the synchronization component 36 rotates, driving the racks 363 connected on both sides. The racks 363 are provided in two sets, respectively connecting the extension rod 311 and the compression rod 35, and their movement paths are simultaneously outward or inward. Thus, when the fixed mold plate 23 applies pressure to the injection nozzle 31, the interior of the sleeve 32... The molten plastic enters the injection molding machine 2 through the inlet hole 232, allowing for rapid injection during molding. It also works in conjunction with the compression rod 35 to increase the speed at which the molten plastic enters the injection molding machine 2. Finally, when the surface of the fixed mold platen 23 applies pressure to the injection nozzle 31, the tip of the injection nozzle 31 aligns with the inlet hole 232 on the top surface of the fixed mold platen 23. Conversely, when no pressure is applied, the two stop contacting each other. Simultaneously, the drive motor 241 starts working, utilizing... The drive belt 243 is driven to move at high speed by the drive wheel 242 and the auxiliary wheel 244. The bottom surface of the cutter 245 is tightly connected to the top surface of the fixed mold plate 23. The cutter 245 moves synchronously with the drive belt 243. When it passes between the injection nozzle 31 and the filling hole 232, it cuts off the overflowing plastic liquid. At the same time, when the injection nozzle 31 is not pressurized, the synchronization component 36 drives the compression rod 35 to move backward, so that the plastic liquid inside the extension rod 311 is drawn into the sleeve 32, preventing the plastic liquid from overflowing from the front end of the injection nozzle 31.

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

Claims

1. A plastic injection mold that improves hot runner flow, comprising an injection mold body (1), characterized in that: The injection mold body (1) includes an injection molding machine (2) and an injection device (3) connected to the front end of the injection molding machine (2). The bottom, middle and top ends of the injection molding machine (2) are respectively provided as a moving mold base plate (21), a moving mold template (22) and a fixed mold template (23). A docking assembly (24) is installed on the top surface of the fixed mold template (23). The docking assembly (24) includes a drive motor (241), a drive wheel (242) connected to the bottom end of the drive motor (241), a drive belt (243) sleeved on the outer ring of the drive wheel (242), an auxiliary wheel (244) snapped into the inner ring of the other end of the drive belt (243), and a cutter (245) connected to the outer ring of the drive belt (243). The injection device (3) includes an injection nozzle (31), a sleeve (32) connected to the rear end of the injection nozzle (31), a heating coil (33) sleeved on the outer ring of the sleeve (32), a feed hopper (34) installed on the top surface of the sleeve (32) near the rear end, a compression rod (35) inserted into the rear end of the sleeve (32), and a synchronization component (36) connecting the injection nozzle (31) and the compression rod (35). A disconnection component (4) is installed between the injection molding device (2) and the injection device (3). The disconnection component (4) includes a support frame (41), a compression spring (42) connected to the bottom surface of the support frame (41), and a spring plate (43) connected to the other end of the compression spring (42). The rear end of the injection nozzle (31) is sealed and snapped into the interior of the rebound plate (43). The rear end of the injection nozzle (31) is set as an extension rod (311). A constant temperature ring (312) is sleeved on the outer periphery of the extension rod (311) near the front end. The interior of the sleeve (32) is hollowed out, and the front end and rear end are respectively connected to the extension rod (311) and the compression rod (35). The outer wall of the compression rod (35) is tightly connected to the inner wall of the sleeve (32). The inner ring of the heating coil (33) is sleeved on the outer ring of the sleeve (32), and the heating coil (33) is larger in volume than the constant temperature ring (312). The synchronization component (36) includes a stabilizing block (361), a rotating gear (362) mounted on the top surface of the stabilizing block (361), a rotating gear (362) and a rack (363). The top surface of the stabilizing block (361) is connected to the bottom surface of the rotating gear (362), but the two are not fixedly connected. There are two sets of racks (363), which are installed on both sides of the rotating gear (362). A collar (364) is welded to the top of the front end of the rack (363), and the collar (364) is connected to the outer ring of the extension rod (311) and the compression rod (35) respectively. A base (37) is installed below the main body (1) of the injection mold. A groove (371) is provided on the top surface of the base (37) near the injection molding equipment (2). A lead screw (372) is installed between the inner walls of the groove (371). A push plate (373) is sleeved on the outer ring of the lead screw (372). The bottom surface of the stabilizing block (361) is fixedly connected to the top surface of the base (37).

2. A plastic injection mold for improving hot runner flow according to claim 1, characterized in that: The top surface of the moving mold base plate (21) is equipped with a model (211), and the bottom surface of the moving mold template (22) is provided with a model groove (221). The four corners of the bottom surface of the moving mold template (22) are provided with round holes (222), and hydraulic rods (223) are installed inside the round holes (222). The top surface of the moving mold template (22) is equipped with a sealing groove (224). The bottom surface of the moving mold template (22) is fastened to the top surface of the moving mold base plate (21). The bottom surface of the fixed mold template (23) is equipped with a sealing plate (231), and the sealing plate (231) is fastened to the inside of the sealing groove (224). The top surface of the fixed mold template (23) is provided with an injection hole (232), which is located at the center of the top surface of the model groove (221). The top surface of the fixed mold template (23) is provided with a fixing hole (233) and an adjustment hole (234) on both sides of the injection hole (232).

3. A plastic injection mold for improving hot runner flow according to claim 2, characterized in that: The bottom surface of the drive motor (241) is connected to the top surface of the support plate (25), and the top surface of the front end of the support plate (25) has a hole. The front end of the drive motor (241) is inserted into the hole. The bottom surface of the support plate (25) and the top surface of the fixed mold template (23) are fixedly connected. The bottom end of the drive motor (241) passes through the inside of the drive wheel (242) and extends to the inside of the fixing hole (233). The auxiliary wheel (244) is equipped with a fixing bolt (2441), and the bottom end of the fixing bolt (2441) rotates in the adjustment hole (234). The drive belt (243) is adjusted to the outer ring of the drive wheel (242) and the auxiliary wheel (244). The rear end of the cutter (245) is fixedly connected to the bottom surface of the drive belt (243).

4. A plastic injection mold for improving hot runner flow according to claim 1, characterized in that: The sleeve (32) has a feed hole (321) on the top surface of its rear end, and the top surface of the feed hole (321) and the bottom surface of the feed hopper (34) are sealed together. The feed hopper (34) is hollow inside and has an expanded top.

5. A plastic injection mold for improving hot runner flow according to claim 1, characterized in that: The top surface of the support frame (41) is provided with a connection hole (411), and two compression springs (42) are provided. The top and bottom ends of the compression springs (42) are respectively installed on the bottom surface of the support frame (41) and the top surface of the spring plate (43). The top surface of the spring plate (43) is also provided with a connection hole (411).