Injection molding method based on hot runner and nozzle

Abstract

The present invention provides an injection molding method based on a hot runner nozzle, which relates to the field of injection molding technology and includes the following steps: S1: connecting an injection molding machine to a hot runner nozzle assembly via a connecting device, and injecting rubber into the hot runner nozzle assembly; S2: opening the main nozzle in the hot runner nozzle assembly, allowing the rubber to enter the square nozzle through a channel in a manifold; S3: providing an inclined flow channel and a high-thermal conductivity nozzle core in the square nozzle, allowing the rubber to enter the high-thermal conductivity nozzle core through the inclined flow channel, and a heating wire is wound around the high-thermal conductivity nozzle core; S4: at this time, the valve needle in the high-thermal conductivity nozzle core is in an open state, and the cylinder is opened, allowing the rubber to be injected into the mold product cavity through the nozzle core; S5: closing the cylinder, and the valve needle closes to complete the injection. This valve, by providing a high-thermal conductivity nozzle core inside the square nozzle, and providing a heating wire on the high-thermal conductivity nozzle core, can heat the interior of the nozzle, making the temperature of the nozzle more uniform through the thermal conductivity of the high-thermal conductivity nozzle core.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment, and in particular to an injection molding method based on a hot runner and hot nozzle. Background Art

[0002] Injection molding is a method for producing industrial products. Rubber and plastic injection molding are commonly used. Injection molding can be further divided into compression molding and die casting. Rubber injection molding involves injecting the rubber compound directly from the barrel into the mold for vulcanization. The advantages of rubber injection molding include: although it is an intermittent operation, it offers fast cycle times, high production efficiency, the elimination of blank preparation, low labor intensity, and excellent product quality. Plastic injection molding involves injecting molten plastic into a mold under pressure, where it is cooled and formed into the desired plastic part. Mechanical injection molding machines are specifically designed for this purpose. The most commonly used plastics are polyethylene, polypropylene, ABS, PA, and polystyrene. The resulting shape often represents the final product, requiring no further processing before installation or final use. Many details, such as bosses, ribs, and threads, can be created in a single injection molding operation.

[0003] In the existing technology, a heating wire is usually provided outside the hot nozzle to heat the injection molding operation. However, because the hot nozzle is installed on the mold and contacts the mold, a large amount of heat from the hot nozzle is absorbed by the mold, making the overall temperature of the hot nozzle uneven, which can easily cause abnormal shape of the molded product. Summary of the Invention

[0004] The present invention provides an injection molding method based on a hot runner and hot nozzle to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses an injection molding method based on a hot runner nozzle, which includes the following steps: S1: connecting the injection molding machine to the hot runner nozzle assembly through a connecting device, and injecting the rubber into the hot runner nozzle assembly; S2: opening the main nozzle in the hot runner nozzle assembly, and the rubber enters the square nozzle through the channel in the diverter plate; S3: an inclined flow channel and a high thermal conductivity nozzle core are provided in the square nozzle, and the rubber enters the high thermal conductivity nozzle core through the inclined flow channel, and a heating wire is wound around the high thermal conductivity nozzle core; S4: at this time, the valve needle in the high thermal conductivity nozzle core is in an open state, the cylinder is opened, and the rubber is injected into the mold product cavity through the high thermal conductivity nozzle core; S5: closing the cylinder, and the valve needle is closed to complete the injection.

[0006] Preferably, the hot runner nozzle assembly includes a diverter plate and a main nozzle, a channel is provided in the diverter plate, the delivery end of the main nozzle extends into the diverter plate, and the delivery end of the main nozzle is fixedly connected to the extended position of the diverter plate, the delivery end of the main nozzle is connected to the channel, a square hot nozzle is installed on the lower side of the diverter plate, a high thermal conductivity nozzle core is provided in the square hot nozzle, and the high thermal conductivity nozzle core is embedded in the square hot nozzle, the channel extends into the square hot nozzle, the channel is fixedly connected to the through position of the square hot nozzle, and the channel is connected to the high thermal conductivity nozzle core.

[0007] Preferably, a cylinder is also provided on the diverter plate, and the output end of the cylinder extends into the square hot nozzle through the diverter plate, and the output end of the cylinder is connected with the high thermal conductivity nozzle core. A valve needle sleeve is provided at the connection between the output end of the cylinder and the high thermal conductivity nozzle core, and the high thermal conductivity nozzle core extends downward out of the square hot nozzle, and the high thermal conductivity nozzle core is fixedly connected to the extended position of the square hot nozzle. The lower end of the square hot nozzle is also provided with an insulating sealing ring and an insulating color-changing cap. The insulating sealing ring is made of titanium alloy, and the insulating color-changing cap is made of Vespel material.

[0008] Preferably, the connecting device includes a connecting tube, the left end of the connecting tube is connected to the injection molding machine, a sealing tube is installed on the right side of the connecting tube, the right side of the connecting tube extends into the sealing tube, and the connecting tube is fixedly connected to the extended position of the sealing tube, the right end of the connecting tube passes through the connecting through tube, and two upper and lower symmetrical snap heads are provided on the through tube, a battery and an air pump are also provided in the sealing tube, the snap head, the battery and the air pump are electrically connected, and an airbag is also installed on the through tube, the left side of the airbag abuts against the left inner wall of the sealing tube, and the snap head is inserted into the main nozzle.

[0009] Preferably, a connecting tube is installed on the main nozzle, a sealing ring is fixed on the connecting tube, the sealing ring abuts against the inner wall of the sealing tube, an annular tooth plate is also provided on the connecting tube, the annular tooth plate abuts against the inner wall of the sealing tube, a trumpet-shaped channel is provided in the connecting tube, and the trumpet-shaped channel can cooperate with the through tube.

[0010] Preferably, an auxiliary device is also provided in the diverter plate, the auxiliary device includes a fixed box, the fixed box is fixedly set on the right inner wall of the diverter plate, and an adjustment box is provided in the fixed box, the adjustment box is fixedly connected to the upper and lower sides and the right inner wall of the fixed box, and an air-conditioning pump is also provided on the diverter plate, and the lower output end of the air-conditioning pump is also connected with an air-conditioning pipe, which passes through the diverter plate and the fixed box and extends into the adjustment box, and the air-conditioning pipe is fixedly connected with the diverter plate, the fixed box and the adjustment box through the position, and the lower end of the adjustment box is connected with an air pipe, which passes through the fixed box and is fixedly connected to the fixed box, and the lower end of the air pipe is connected with an air plate, which is fixedly set on the lower inner wall of the diverter plate, and a plurality of nozzles are provided on the lower surface of the air plate, and a plurality of holes are opened on the lower side wall of the diverter plate, and the nozzles match the holes.

[0011] Preferably, a first fixing plate and a second fixing plate are provided in the fixed box, and the first fixing plate and the second fixing plate are fixedly connected to the inner wall of the fixed box, the first fixing plate is located on the left side of the second fixing plate, and an air cavity is formed between the first fixing plate and the second fixing plate, a slide is provided in the air cavity, the slide is slidably connected to the upper and lower inner walls of the air cavity, the left side of the slide is fixedly connected to the return spring, the left side of the return spring is fixedly connected to the first fixing plate, the right side of the slide is rotatably connected to a push rod, the push rod passes through the second fixing plate to the right, and the push rod is slidably connected to the passing position of the second fixing plate, the push rod extends to the right into the adjustment box, and the push rod is slidably connected to the extension position of the adjustment box, the right end of the push rod is fixedly connected to the baffle, and the upper and lower sides of the baffle are rotatably connected to fan blades, and the baffle is used to block the cold air entering the cold air pipe.

[0012] Preferably, a one-way air inlet valve is provided on the upper side wall of the air cavity, an electric telescopic rod is embedded in the second fixed plate, the output end of the electric telescopic rod is fixedly connected to the slide, the right end of the slide is fixedly connected to the displacement detection module, and an air outlet pipe is connected to the lower side wall of the air cavity, the other end of the air outlet pipe extends into the adjustment box, and the air outlet pipe is fixedly connected to the extended position of the adjustment box. A pneumatic telescopic rod is also provided on the lower inner wall of the adjustment box, the air outlet pipe is connected to the pneumatic telescopic rod, and an air release valve is also provided on the pneumatic telescopic rod. The upper output end of the pneumatic telescopic rod is fixedly connected to a gear rod, and a recess is also provided on the left side wall of the adjustment box. A gear ring is rotatably connected to the left inner wall of the adjustment box, and the gear ring is meshed with the gear rod. The upper end of the gear rod is fixedly connected to a first connecting rod, and the right end of the first connecting rod is fixedly connected to the second connecting rod at 90 degrees, and the right end of the second connecting rod is fixedly connected to the cold air pipe.

[0013] Preferably, two vertically symmetrical keyways are provided in the gear ring, and two vertically symmetrical connecting keys are provided on the push rod, and the connecting keys cooperate with the keyways, so that the push rod can slide left and right in the gear ring;

[0014] A control box is also provided on the diversion plate, and the control box is electrically connected to the air release valve, the electric telescopic rod, the displacement detection module, and the air conditioning pump.

[0015] Preferably, a fixing rod is fixed on the upper inner wall of the diverter plate, a fixed pulley is installed at the lower end of the fixing rod, a wiring harness is fixedly connected to the left end of the slide, the wiring harness passes through the first fixing plate and the left inner wall of the fixing box to the left, and the wiring harness is slidingly connected to the first fixing plate and the fixing box through the position, a rotating shaft is provided for rotation in the channel, a slow reset coil spring is provided in the rotating shaft, a release plate is fixed at the lower end of the rotating shaft, the wiring harness bypasses the fixed pulley and extends into the channel, and the wiring harness is sealed and slidingly connected to the channel extension position, and the wiring harness is fixedly connected to the rotating shaft.

[0016] Compared with the prior art, the present invention provides an injection molding method based on a hot runner and hot nozzle, which has the following beneficial effects:

[0017] The present invention disposes a high thermal conductivity nozzle core inside a square hot nozzle. The high thermal conductivity nozzle core is provided with a heating wire, which can heat the inside of the square hot nozzle. The thermal conductivity of the high thermal conductivity nozzle core can make the temperature of the square hot nozzle more evenly distributed, thereby improving the yield rate of the product after the injection molding is completed and effectively improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the connecting mechanism of the present invention Figure 1 ;

[0021] Figure 3 Schematic diagram of the structure of the connecting mechanism of the present invention Figure 2 ;

[0022] Figure 4 A schematic diagram of the auxiliary device of the present invention;

[0023] Figure 5 It is the internal structure diagram of the adjustment box of the present invention.

[0024] Figure: 1, main nozzle; 2, manifold; 3, cylinder; 4, valve needle; 5, valve needle sleeve; 6, square nozzle; 7, high thermal conductivity nozzle core; 8, thermal insulation seal ring; 9, thermal insulation color change cap; 10, channel; 11, air pump; 12, air pipe; 13, adjustment box; 14, air pipe; 15, air plate; 16, nozzle; 17, release plate; 18, rotating shaft; 19, slow return coil spring; 20, fixed pulley; 21, fixing rod; 22, wiring harness; 23, fixing box; 24, first fixing plate; 25, slide plate; 2 6. Second fixed plate; 27. Air cavity; 28. Push rod; 29. Exhaust pipe; 30. Recess; 31. First connecting rod; 32. Second connecting rod; 33. Gear ring; 34. Fan blade; 35. Baffle; 36. Gear rod; 37. Pneumatic telescopic rod; 38. Control box; 39. Injection molding machine; 40. Connecting pipe; 41. Sealing pipe; 42. Buckle head; 43. Through pipe; 44. Battery; 45. Air pump; 46. Airbag; 47. Connecting pipe; 48. Sealing ring; 49. Annular gear plate; 50. Trumpet-shaped channel. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Example 1

[0028] The embodiment of the present invention provides an injection molding method based on a hot runner nozzle, such as Figure 1 As shown, the following steps are included: S1: connecting the injection molding machine 39 to the hot runner nozzle assembly through a connecting device, and injecting the rubber into the hot runner nozzle assembly; S2: opening the main nozzle 1 in the hot runner nozzle assembly, and the rubber enters the square hot nozzle 6 through the channel 10 in the diverter plate 2; S3: an inclined flow channel and a high thermal conductivity nozzle core 7 are provided in the square hot nozzle 6, and the rubber enters the high thermal conductivity nozzle core 7 through the inclined flow channel, and a heating wire is wound around the high thermal conductivity nozzle core 7; S4: at this time, the valve needle 4 in the high thermal conductivity nozzle core 7 is in an open state, the cylinder 3 is opened, and the rubber is injected into the mold product cavity through the high thermal conductivity nozzle core 7; S5: closing the cylinder 3, the valve needle 4 is closed to complete the injection.

[0029] The working principle and beneficial effects of the above technical solution are as follows: First, the injection molding machine 39 is connected to the hot runner nozzle assembly via a connecting device, and the rubber material is injected into the hot runner nozzle assembly; second, the main nozzle 1 in the hot runner nozzle assembly is opened, and the rubber material enters the square nozzle 6 through the channel 10 in the manifold 2; third, the square nozzle 6 is provided with an inclined flow channel and a high thermal conductivity nozzle core 7, and the rubber material enters the high thermal conductivity nozzle core 7 through the inclined flow channel, and the high thermal conductivity nozzle core 7 is wound with a heating wire; fourth, at this time, the valve needle 4 in the high thermal conductivity nozzle core 7 is in an open state, and the cylinder 3 is opened, and the rubber material is injected into the mold cavity of the mold product through the high thermal conductivity nozzle core 7; fifth, the cylinder 3 is closed, and the valve needle 4 is closed to complete the injection;

[0030] By placing a high thermal conductivity nozzle core 7 inside the square nozzle 6, and providing a heating wire on the high thermal conductivity nozzle core 7, heating can be performed inside the square nozzle 6. The temperature of the square nozzle 6 can be more evenly distributed through the thermal conductivity of the high thermal conductivity nozzle core 7, thereby improving the yield rate of the product after the injection molding is completed and effectively improving the practicality.

[0031] Example 2

[0032] On the basis of the above embodiment 1, Figure 1 As shown, the hot runner nozzle assembly includes a diverter plate 2 and a main nozzle 1. A channel 10 is provided in the diverter plate 2. The delivery end of the main nozzle 1 extends into the diverter plate 2 and is fixedly connected to the extended position of the diverter plate 2. The delivery end of the main nozzle 1 is connected through the channel 10. A square nozzle 6 is installed on the lower side of the diverter plate 2. A high thermal conductivity nozzle core 7 is provided in the square nozzle 6, and the high thermal conductivity nozzle core 7 is embedded in the square nozzle 6. The channel 10 extends into the square nozzle 6. The channel 10 is fixedly connected to the through position of the square nozzle 6, and the channel 10 is connected through the high thermal conductivity nozzle core 7.

[0033] Among them, preferably, a cylinder 3 is also provided on the diverter plate 2, and the output end of the cylinder 3 extends into the square hot nozzle 6 through the diverter plate 2, and the output end of the cylinder 3 is connected with the high thermal conductivity nozzle core 7. A valve needle sleeve 5 is provided at the connection between the output end of the cylinder 3 and the high thermal conductivity nozzle core 7. The high thermal conductivity nozzle core 7 extends downward out of the square hot nozzle 6, and the high thermal conductivity nozzle core 7 is fixedly connected to the extended position of the square hot nozzle 6. The lower end of the square hot nozzle 6 is also provided with an insulating sealing ring 8 and an insulating color-changing cap 9. The insulating sealing ring 8 is made of titanium alloy, and the insulating color-changing cap 9 is made of Vespe l material.

[0034] Among them, Vespe l is made of thermosetting polyimide powder;

[0035] The heat-insulating sealing ring 8 is made of titanium alloy, which plays the role of sealing and heat insulation and has sufficient strength. The heat-insulating color-changing cap 9 is made of Vespel material, which plays the role of heat insulation and filling the flow channel gap.

[0036] The working principle and beneficial effects of the above technical solution are as follows: the glue in the main nozzle 1 enters the high thermal conductivity nozzle core 7 through the channel 10, the heating wire on the high thermal conductivity nozzle core 7 heats up, and the inside of the square hot nozzle 6 is heated, and then the valve needle 4 is opened, the cylinder 3 is opened, and the glue is injected into the mold product cavity through the high thermal conductivity nozzle core 7, and finally the valve needle 4 is closed to complete the injection; by penetrating and inlaying the high thermal conductivity nozzle core 7 inside the square hot nozzle 6, the thermal conductivity of the high thermal conductivity nozzle core 7 makes the nozzle temperature more balanced, and the heating wire is provided on the high thermal conductivity nozzle core 7 to supplement the temperature of the square hot nozzle 6, avoiding a large amount of heat loss when the square hot nozzle 6 contacts the mold, resulting in insufficient temperature of the square hot nozzle 6; the thermal insulation sealing ring 8 and the thermal insulation color change cap 9 can reduce the heat loss when the hot nozzle contacts the mold.

[0037] Example 3

[0038] On the basis of the above-mentioned embodiments 1-2, Figure 2-3As shown, the connecting device includes a connecting tube 40, the left end of which is connected to the injection molding machine 39, a sealing tube 41 is installed on the right side of the connecting tube 40, the right side of the connecting tube 40 extends into the sealing tube 41, and the connecting tube 40 is fixedly connected to the extended position of the sealing tube 41, the right end of the connecting tube 40 is connected to the through-tube 43, and two upper and lower symmetrical snap heads 42 are provided on the through-tube 43, a battery 44 and an air pump 45 are also provided in the sealing tube 41, the snap head 42, the battery 44 and the air pump 45 are electrically connected, and an airbag 46 is also installed on the through-tube 43, the left side of the airbag 46 abuts against the left inner wall of the sealing tube 41, and the snap head 42 is inserted into the main nozzle 1.

[0039] Among them, preferably, a connecting tube 47 is installed on the main nozzle 1, and a sealing ring 48 is fixed on the connecting tube 47, which abuts the inner wall of the sealing tube 41. The connecting tube 47 is also provided with an annular tooth plate 49, which abuts the inner wall of the sealing tube 41. A trumpet-shaped channel 50 is provided in the connecting tube 47, and the trumpet-shaped channel 50 can cooperate with the through tube 43.

[0040] The working principle and beneficial effects of the above technical solution are as follows: when it is necessary to connect the injection molding machine 39 and the main nozzle 1, the through-tube 43 is inserted into the connecting tube 47. When the buckle head 42 contacts the inner wall with the smaller diameter of the trumpet-shaped channel 50, the air pump 45 is powered on and started, and the airbag 46 is slowly inflated. In the process of continuing to move, the buckle head 42 will be clamped to the inner wall of the main nozzle 1. At this time, the sealing tube 41 also covers the outside of the connecting tube 47, and the inner wall of the sealing tube 41 abuts against the sealing ring 48 and the annular tooth plate 49. When the buckle When the head 42 is snapped onto the inner wall of the main nozzle 1, the airbag 46 expands to its maximum, and the airbag 46 blocks the connecting pipe 47 to prevent the glue from leaking; by setting the snap head 42, the battery 44 and the air pump 45 to be electrically connected, when the snap head 42 contacts the inner wall of the trumpet-shaped channel 50 with a smaller diameter, the driving operation can be completed, so that the airbag 46 is gradually inflated. The airbag 46 can effectively complete the blockage when it expands, preventing the glue from leaking during the transportation process, and effectively improving the practicality and effectiveness of the device.

[0041] Example 4

[0042] On the basis of the above-mentioned embodiments 1-3, Figure 4-5 As shown, a connecting pipe 47 is installed on the main nozzle 1, and a sealing ring 48 is fixed on the connecting pipe 47. The sealing ring 48 abuts against the inner wall of the sealing tube 41. The connecting pipe 47 is also provided with an annular tooth plate 49, which abuts against the inner wall of the sealing tube 41. A trumpet-shaped channel 50 is provided in the connecting pipe 47, and the trumpet-shaped channel 50 can cooperate with the through-tube 43.

[0043] Among them, preferably, the manifold 2 is further provided with an auxiliary device, the auxiliary device includes a fixed box 23, the fixed box 23 is fixedly arranged on the right inner wall of the manifold 2, and an adjustment box 13 is provided in the fixed box 23, the adjustment box 13 is fixedly connected to the upper and lower sides and the right inner wall of the fixed box 23, and the manifold 2 is further provided with an air-conditioning pump 11, and the lower output end of the air-conditioning pump 11 is also connected with an air-conditioning pipe 12, and the air-conditioning pipe 12 passes through the manifold 2 and the fixed box 23 and extends into the adjustment box 13 The cold air pipe 12 is fixedly connected to the diverter plate 2, the fixed box 23 and the adjustment box 13 through a position. The lower end of the adjustment box 13 is connected with an air pipe 14. The air pipe 14 passes through the fixed box 23 and is fixedly connected to the fixed box 23. The lower end of the air pipe 14 is connected with an air plate 15. The air plate 15 is fixedly arranged on the lower inner wall of the diverter plate 2, and a plurality of nozzles 16 are provided on the lower surface of the air plate 15. A plurality of holes are opened on the lower side wall of the diverter plate 2, and the nozzles 16 cooperate with the holes.

[0044] Among them, preferably, a first fixing plate 24 and a second fixing plate 26 are provided in the fixing box 23, and the first fixing plate 24 and the second fixing plate 26 are fixedly connected to the inner wall of the fixing box 23, the first fixing plate 24 is located on the left side of the second fixing plate 26, and an air cavity 27 is formed between the first fixing plate 24 and the second fixing plate 26, and a slide plate 25 is provided in the air cavity 27, and the slide plate 25 is slidably connected to the inner walls of the upper and lower sides of the air cavity 27, the left side of the slide plate 25 is fixedly connected to the return spring, and the left side of the return spring is fixedly connected to the first fixing plate 24, and the right side of the slide plate 25 is rotatably connected to the push rod 28, the push rod 28 passes through the second fixing plate 26 to the right, and the push rod 28 is slidably connected to the second fixing plate 26 through the position, the push rod 28 extends to the right into the adjustment box 13, and the push rod 28 is slidably connected to the extended position of the adjustment box 13, the right end of the push rod 28 is fixedly connected to the baffle 35, and the baffle 35 is rotatably connected to the fan blades 34 on the upper and lower sides. The baffle 35 is used to block the cold air entering the cold air pipe 12.

[0045] Among them, preferably, a one-way air inlet valve is provided on the upper side wall of the air cavity 27, an electric telescopic rod is embedded in the second fixed plate 26, the output end of the electric telescopic rod is fixedly connected to the slide 25, and the right end of the slide 25 is fixedly connected to the displacement detection module. An air outlet pipe 29 is connected to the lower side wall of the air cavity 27, and the other end of the air outlet pipe 29 extends into the adjustment box 13. The air outlet pipe 29 is fixedly connected to the extension position of the adjustment box 13. A pneumatic telescopic rod 37 is also provided on the inner wall of the lower side of the adjustment box 13. The air outlet pipe 29 is connected to the The pneumatic telescopic rod 37 is connected through, and an air release valve is also provided on the pneumatic telescopic rod 37. The upper output end of the pneumatic telescopic rod 37 is fixedly connected to the gear rod 36. A recess 30 is also provided on the left side wall of the adjustment box 13. A gear ring 33 is rotatably connected to the left inner wall of the adjustment box 13. The gear ring 33 is meshed with the gear rod 36. The upper end of the gear rod 36 is fixedly connected to the first connecting rod 31. The right end of the first connecting rod 31 is fixedly connected to the second connecting rod 32 at 90 degrees. The right end of the second connecting rod 32 is fixedly connected to the cold air pipe 12.

[0046] Among them, preferably, two vertically symmetrical key slots are provided in the gear ring 33, and two vertically symmetrical connecting keys are provided on the push rod 28. The connecting keys cooperate with the key slots, and the push rod 28 can slide left and right in the gear ring 33;

[0047] A control box 38 is further provided on the diverter plate 2 , and the control box 38 is electrically connected to the air release valve, the electric telescopic rod, the displacement detection module, and the cold air pump 11 .

[0048] Among them, preferably, a fixed rod 21 is fixed on the upper inner wall of the diverter plate 2, a fixed pulley 20 is installed at the lower end of the fixed rod 21, and a wiring harness 22 is fixedly connected to the left end of the skateboard 25. The wiring harness 22 passes through the first fixed plate 24 and the left inner wall of the fixed box 23 to the left, and the wiring harness 22 is slidably connected to the first fixed plate 24 and the fixed box 23 through the position. A rotating shaft 18 is provided in the channel 10, and a slow reset coil spring 19 is provided in the rotating shaft 18. A release plate 17 is fixed to the lower end of the rotating shaft 18. The wiring harness 22 bypasses the fixed pulley 20 and extends into the channel 10, and the wiring harness 22 is sealed and slidably connected to the extended position of the channel 10, and the wiring harness 22 is fixedly connected to the rotating shaft 18.

[0049] The working principle and beneficial effects of the above technical solution are as follows: when the glue in the channel 10 passes through the release plate 17, the release plate 17 opens, the release plate 17 drives the rotating shaft 18 to rotate, the rotating shaft 18 drives the wire harness 22 to pull the slide plate 25 to move to the left, and the reset spring is compressed. When the glue passes through the release plate 17, the release plate 17 slowly resets under the action of the slow reset coil spring 19, the rotating shaft 18 slowly releases the wire harness 22, and at the same time the reset spring resets, and the slide plate 25 moves to the right (this device adopts an electric extension When the slide 25 starts to move to the right, the displacement detection module on the slide 25 transmits a signal to the control box 38, which starts the cold air pump 11. The cold air enters the adjustment box 13 from the cold air pipe 12. The slide 25 drives the push rod 28 to move to the right, and the push rod 28 drives the baffle 35 to move to the right, so that the baffle 35 is as far away from the air outlet of the cold air pipe 12 as possible. The cold air then enters the air plate 15 from the air pipe 14 and is discharged from the nozzle 16.

[0050] When the return spring is reset to the limit, the control box 38 controls the electric telescopic rod to retract, and the slide plate 25 continues to move to the right. When the slide plate 25 moves to a certain position to the right (the position can be selected according to the needs of those skilled in the art), the air in the air cavity 27 enters the pneumatic telescopic rod 37 through the air outlet pipe 29, and the pneumatic telescopic rod 37 extends (only when the slide plate 25 moves to a certain position, the gas in the air cavity 27 can extend the pneumatic telescopic rod 37), the pneumatic telescopic rod 37 drives the gear rod 36 to move upward, the gear rod 36 drives the gear ring 33 to rotate, and the gear rod 36 drives the first connecting rod 31 and the second connecting rod 32 to move upward. The second connecting rod 32 drives the cooling pipe 12 to move upward, the gear ring 33 drives the push rod 28 to rotate, the control box 38 drives the baffle 35 to rotate, and the baffle 35 drives the fan blades 34 to rotate, so that the cooling pipe 12 is farther away from the baffle 35. At the same time, the baffle 35 blocks the air outlet of the cooling pipe 12 less, so that more air enters the air plate 15 from the air pipe 14 and is discharged from the nozzle 16, which has a better cooling effect. After the baffle 35 rotates, the wind will blow the fan blades 34 to rotate. When the cooling is completed, the control box 38 drives the air release valve to release air, the pneumatic telescopic rod 37 contracts, the gear ring 33 is reset, the baffle 35 is reset, and the cooling operation is completed.

[0051] When the glue in the channel 10 passes through, the release plate 17 starts to reset, and the slide plate 25 moves to the right. At this time, the control box 38 drives the cold air pump 11 to cool the square hot nozzle 6 after the single injection molding is completed to prevent burns caused by accidental touch. At this time, since the baffle 35 is still blocking the air outlet of the cold air pipe 12, the amount of cold air discharged from the nozzle 16 is small; and if the amount of cold air needs to be increased, the electric telescopic rod can be started through the control box 38 to discharge the gas in the air cavity 27 into the pneumatic telescopic rod 37, so that the baffle 35 rotates, the wind block is smaller, and the air output of the nozzle 16 is larger. However, the injection molding process requires high temperature. If the temperature is lowered too much in a single time, the heating wire on 7 will consume more energy in the next injection molding. It is better to try. If it is not used for a long time after one use, it can be cooled quickly. If it is used intermittently, the cooling operation can be performed only by resetting the slide plate 25. Those skilled in the art can rotate it as needed and set the fan blades 34. When wind passes through, the fan blades 34 can break up the cold air, effectively reducing the water droplets in the cold air caused by the low temperature from flowing out of the nozzle 16, effectively improving the practicality and functionality of the device.

[0052] Example 5

[0053] On the basis of the above-mentioned embodiment 4, the injection molding method based on the hot runner nozzle further includes:

[0054] Volume flow meter: installed on the nozzle 16, used to detect the volume flow of cold air passing through the nozzle 16 per unit time;

[0055] Thermometer: installed on the square hot nozzle 6, used to detect the temperature of the square hot nozzle 6 (approximate temperature);

[0056] Timer: installed at the nozzle 16, used to detect the total time the gas passes through the nozzle 16;

[0057] The control box 38 is electrically connected to the volume flow meter, the thermometer and the timer. The control box 38 controls the operation of the electric telescopic rod based on the pressure volume flow meter, the thermometer and the timer, including the following steps:

[0058] Step 1: The control box 38 obtains the cooling effect index of the auxiliary device based on the volume flow meter, thermometer, timer and formula (1):

[0059]

[0060] Wherein, B is the cooling effect index of the auxiliary device; M is the mechanical efficiency of the cooling pump 11; V is the volume flow meter detection value; t is the timer detection value; N is the cross-sectional area of the nozzle 16; T is the thermometer detection value; t1 is the unit time; T1 is the preset temperature to be lowered; H is the height of the square nozzle 6;

[0061] Among them, the preset temperature to be lowered is 70 degrees.

[0062] Step 2: Compare the cooling effect index of the auxiliary device calculated by formula (1) with the corresponding preset cooling effect index. When the cooling effect index of the auxiliary device calculated by formula (1) is less than the corresponding preset cooling effect index, the control box 38 controls the electric telescopic rod to retract, so that the distance that the push rod 28 pushes the baffle 35 to the right increases, so that the area of the baffle 35 blocking the cold air pipe 12 is smaller, and the gas discharged from the air cavity 27 into the pneumatic telescopic rod 37 is not enough to extend the pneumatic telescopic rod 37. When the heat dissipation index of the heat dissipation mechanism calculated by formula (1) is greater than the corresponding preset heat dissipation index, the control box 38 does not control the electric telescopic rod and keeps it in place.

[0063] The working principle and beneficial effects of the above calculation scheme are as follows: first, the cooling effect index of the auxiliary device is calculated using formula (1), and the control box 38 compares the cooling effect index of the auxiliary device calculated by formula (1) with the preset cooling effect index. When the cooling effect index of the auxiliary device calculated by formula (1) is less than the corresponding cooling effect index, the control box 38 controls the electric telescopic rod to retract, so that the distance that the push rod 28 pushes the baffle 35 to the right increases, so that the area of the baffle 35 blocking the cold air pipe 12 is smaller, and the gas discharged into the pneumatic telescopic rod 37 in the air cavity 27 is not enough to make the pneumatic telescopic rod 37 extend. When the heat dissipation index of the heat dissipation mechanism calculated by formula (1) is greater than the corresponding preset heat dissipation index, the control box 38 does not control the electric telescopic rod. The control box 38 connects the volume flow meter, thermometer and timer to predict the cooling effect index of the auxiliary device, which can effectively improve the practicality of the device and also prevent the high temperature of the square hot nozzle 6 after injection molding, causing burns to personnel.

[0064] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. If such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. The injection molding method based on hot runner and hot nozzle is characterized by: The method comprises the following steps: S1: connecting an injection molding machine (39) to a hot runner nozzle assembly through a connecting device, and injecting the rubber into the hot runner nozzle assembly; S2: opening a main nozzle (1) in the hot runner nozzle assembly, and the rubber enters a square hot nozzle (6) through a channel (10) in a diverter plate (2); S3: an inclined flow channel and a high thermal conductivity nozzle core (7) are provided in the square hot nozzle (6), and the rubber enters the high thermal conductivity nozzle core (7) through the inclined flow channel, and a heating wire is wound around the high thermal conductivity nozzle core (7); S4: at this time, the valve needle (4) in the high thermal conductivity nozzle core (7) is in an open state, the cylinder (3) is opened, and the rubber is injected into the mold cavity of the mold product through the high thermal conductivity nozzle core (7); S5: closing the cylinder (3), and the valve needle (4) is closed to complete the injection; The connecting device comprises a connecting tube (40), the left end of the connecting tube (40) is connected to the injection molding machine (39), a sealing tube (41) is installed on the right side of the connecting tube (40), the right side of the connecting tube (40) extends into the sealing tube (41), and the connecting tube (40) and the sealing tube (41) are fixedly connected at the extended position, the right end of the connecting tube (40) is connected to the through-tube (43), two upper and lower symmetrical snap-fit heads (42) are provided on the through-tube (43), a battery (44) and an air pump (45) are also provided in the sealing tube (41), the snap-fit head (42), the battery (44) and the air pump (45) are electrically connected, an air bag (46) is also installed on the through-tube (43), the left side of the air bag (46) abuts against the left inner wall of the sealing tube (41), and the snap-fit head (42) is inserted into the main nozzle (1); A connecting pipe (47) is installed on the main nozzle (1). A sealing ring (48) is fixedly provided on the connecting pipe (47). The sealing ring (48) abuts against the inner wall of the sealing pipe (41). An annular tooth plate (49) is also provided on the connecting pipe (47). The annular tooth plate (49) abuts against the inner wall of the sealing pipe (41). A trumpet-shaped channel (50) is provided in the connecting pipe (47). The trumpet-shaped channel (50) can be matched with the through pipe (43).

2. The injection molding method based on hot runner nozzle according to claim 1, characterized in that: The hot runner nozzle assembly comprises a diverter plate (2) and a main nozzle (1). The diverter plate (2) is provided with a channel (10). The delivery end of the main nozzle (1) extends into the diverter plate (2), and the delivery end of the main nozzle (1) is fixedly connected to the extension position of the diverter plate (2). The delivery end of the main nozzle (1) is connected through the channel (10). A square nozzle (6) is installed on the lower side of the diverter plate (2). A high thermal conductivity nozzle core (7) is provided in the square nozzle (6), and the high thermal conductivity nozzle core (7) is embedded in the square nozzle (6). The channel (10) extends into the square nozzle (6), and the channel (10) is fixedly connected to the through position of the square nozzle (6). The channel (10) is connected through the high thermal conductivity nozzle core (7).

3. The injection molding method based on hot runner nozzle according to claim 2, characterized in that: A cylinder (3) is also provided on the manifold (2). The output end of the cylinder (3) passes through the manifold (2) and extends into the square hot nozzle (6). The output end of the cylinder (3) is connected to the high thermal conductivity nozzle core (7). A valve needle sleeve (5) is provided at the connection between the output end of the cylinder (3) and the high thermal conductivity nozzle core (7). The high thermal conductivity nozzle core (7) extends downward out of the square hot nozzle (6). The high thermal conductivity nozzle core (7) is fixedly connected to the extended position of the square hot nozzle (6). A heat insulating sealing ring (8) and a heat insulating color changing cap (9) are also provided at the lower end of the square hot nozzle (6). The heat insulating sealing ring (8) is made of titanium alloy, and the heat insulating color changing cap (9) is made of Vespel material.

4. The injection molding method based on hot runner nozzle according to claim 2, characterized in that: An auxiliary device is also provided in the diverter plate (2), and the auxiliary device includes a fixed box (23), the fixed box (23) is fixedly arranged on the right inner wall of the diverter plate (2), and an adjustment box (13) is provided in the fixed box (23), and the adjustment box (13) is fixedly connected to the upper and lower sides and the right inner wall of the fixed box (23). A cold air pump (11) is also provided on the diverter plate (2), and a cold air pipe (12) is connected to the lower output end of the cold air pump (11). The cold air pipe (12) passes through the diverter plate (2) and the fixed box (23) and extends into the adjustment box (13). The cold air pipe ( 12) is fixedly connected to the diverter plate (2), the fixed box (23) and the adjustment box (13) through a position; the lower end of the adjustment box (13) is connected to an air pipe (14); the air pipe (14) passes through the fixed box (23) and is fixedly connected to the fixed box (23); the lower end of the air pipe (14) is connected to an air plate (15); the air plate (15) is fixedly arranged on the lower inner wall of the diverter plate (2); and a plurality of nozzles (16) are provided on the lower surface of the air plate (15); a plurality of holes are opened on the lower side wall of the diverter plate (2); and the nozzles (16) are matched with the holes.

5. The injection molding method based on hot runner nozzle according to claim 4, characterized in that: A first fixing plate (24) and a second fixing plate (26) are provided in the fixing box (23), and the first fixing plate (24) and the second fixing plate (26) are fixedly connected to the inner wall of the fixing box (23), the first fixing plate (24) is located on the left side of the second fixing plate (26), and an air cavity (27) is formed between the first fixing plate (24) and the second fixing plate (26), a slide plate (25) is provided in the air cavity (27), the slide plate (25) is slidably connected to the inner walls of the upper and lower sides of the air cavity (27), the left side of the slide plate (25) is fixedly connected to the reset spring, and the left side of the reset spring is fixedly connected to the first The fixed plate (24) and the right side of the slide plate (25) are rotatably connected to a push rod (28), the push rod (28) passes through the second fixed plate (26) to the right, and the push rod (28) and the second fixed plate (26) are slidably connected at a passing position, the push rod (28) extends to the right into the adjustment box (13), and the push rod (28) and the adjustment box (13) are slidably connected at an extended position, the right end of the push rod (28) is fixedly connected to a baffle (35), and the upper and lower sides of the baffle (35) are rotatably connected to fan blades (34), and the baffle (35) is used to block the cold air entering the cold air pipe (12).

6. The injection molding method based on hot runner nozzle according to claim 5, characterized in that: A one-way air inlet valve is provided on the upper side wall of the air cavity (27), an electric telescopic rod is embedded in the second fixed plate (26), the output end of the electric telescopic rod is fixedly connected to the slide plate (25), the right end of the slide plate (25) is fixedly connected to the displacement detection module, an air outlet pipe (29) is connected to the lower side wall of the air cavity (27), the other end of the air outlet pipe (29) extends into the adjustment box (13), the air outlet pipe (29) is fixedly connected to the extension position of the adjustment box (13), and a pneumatic telescopic rod (37) is also provided on the lower inner wall of the adjustment box (13), the air outlet pipe (29) and the pneumatic telescopic rod ( 37) is connected through, the pneumatic telescopic rod (37) is also provided with an air release valve, the upper output end of the pneumatic telescopic rod (37) is fixedly connected to the gear rod (36), the left side wall of the adjustment box (13) is also provided with a recess (30), the left inner wall of the adjustment box (13) is rotatably connected with a gear ring (33), the gear ring (33) is meshed with the gear rod (36), the upper end of the gear rod (36) is fixedly connected to the first connecting rod (31), the right end of the first connecting rod (31) is fixedly connected to the second connecting rod (32) at 90 degrees, and the right end of the second connecting rod (32) is fixedly connected to the cold air pipe (12).

7. The injection molding method based on hot runner nozzle according to claim 6, characterized in that: Two vertically symmetrical keyways are provided in the gear ring (33), and two vertically symmetrical connecting keys are provided on the push rod (28). The connecting keys match the keyways, and the push rod (28) can slide left and right in the gear ring (33); A control box (38) is also provided on the diverter plate (2), and the control box (38) is electrically connected to the air release valve, the electric telescopic rod, the displacement detection module, and the cold air pump (11).

8. The injection molding method based on hot runner nozzle according to claim 7, characterized in that: A fixing rod (21) is fixedly provided on the inner wall of the upper side of the diverter plate (2), a fixed pulley (20) is installed at the lower end of the fixing rod (21), a wiring harness (22) is fixedly connected to the left end of the slide plate (25), the wiring harness (22) passes through the first fixing plate (24) and the inner wall of the left side of the fixing box (23) to the left, and the wiring harness (22) is slidably connected to the first fixing plate (24) and the fixing box (23) at a passing position, a rotating shaft (18) is provided in the channel (10), a slow return coil spring (19) is provided in the rotating shaft (18), a release plate (17) is fixedly provided at the lower end of the rotating shaft (18), the wiring harness (22) bypasses the fixed pulley (20) and extends into the channel (10), and the wiring harness (22) is sealed and slidably connected to the extended position of the channel (10), and the wiring harness (22) is fixedly connected to the rotating shaft (18).

Images