Plastic product injection molding device and use method thereof

Abstract

The invention discloses a plastic product injection molding device and a use method thereof, belonging to the field of plastic processing technology, comprising a drying barrel, a material pipe, a water tank, a male mold and a female mold, wherein the drying barrel is used to provide dry raw materials for the material pipe, and the material pipe is used to provide molten raw materials; a cooling mechanism comprises a water tank, a circulation pipe and a circulation cavity, the water tank is used to provide cold water, and the circulation pipe is used to conduct the circulation cavity and the water tank; a transfer mechanism comprises a heat preservation cover, a socket, a hot rod, a driving component and a sealing component, wherein the heat preservation cover is installed on the side wall of the male mold, the driving component is used to drive the hot rod to move, and the hot rod is driven to be drawn out of the socket by the driving component, so that the cooling water cools the mold and the workpiece, thereby improving the work efficiency; when processing again, the driving component drives the hot rod to be inserted into the socket, so that the mold is complete and the mold is prevented from being damaged due to pressure during the injection molding process, and at the same time, the heat of the hot rod is transferred to the mold in the mold closing state, so that the mold can be preheated, thereby playing a role in recycling the heat of the hot rod.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing, and more particularly to a plastic product injection molding device and a use method thereof. Background Art

[0002] The injection molding device is a supporting device for product injection molding. When the injection molding machine is in use, the injection molding device is its main body, and can obtain products of specified shapes by injection molding. The working principle of the injection molding machine is similar to that of a syringe for injection. It uses the thrust of a screw or a plunger to inject the plasticized molten state, i.e., viscous flow state, into a closed mold cavity, and obtains the product after solidification and finalization. Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding, melt plasticization, pressure injection, mold filling and cooling, and mold opening and part removal.

[0003] Only after the molded plastic products are cooled and solidified to a certain rigidity can they avoid deformation due to external force during the demoulding process. Therefore, the mold is in a low-temperature state during demoulding. When continuous production is carried out, the mold suddenly contacts the high-temperature molten raw materials from the low-temperature state, which will generate large thermal stress due to the large temperature difference, easily leading to mold damage or even explosion.

[0004] The Chinese patent with authorization announcement number: CN212498826U discloses an injection mold preheating device. Through the set No. 1 motor and the set fan blades, it can be more conveniently used with the set heating wire and heating ring, so that the air in the preheating box can be better used, and the mold can be preheated through the fan blades, so that the mold can be better used.

[0005] Although the above patent can realize the preheating of the mold, the mold to be preheated needs to be installed on the preheating device, which is troublesome to operate. In addition, when the preheating is completed and the mold is removed, the heat of the mold will be dissipated, so that the preheating effect is poor, and the heat transferred to the mold during the injection molding process cannot be recovered and utilized, resulting in a waste of resources.

[0006] Therefore, a plastic product injection molding device and a use method thereof are proposed. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a plastic product injection molding device and a method of using the same, which can realize heat recovery and save resources.

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A plastic product injection molding device comprises a drying barrel, a material pipe, a male mold and a female mold, wherein the drying barrel is used to provide dry raw materials to the material pipe, and the material pipe is used to provide molten raw materials;

[0010] Also includes:

[0011] The cooling mechanism includes a water tank, a circulation pipe, and a circulation cavity. The water tank is used to provide cold water, and the circulation pipe is used to connect the circulation cavity and the water tank.

[0012] The transfer mechanism includes a heat preservation cover, a socket, a heat rod, a driving assembly, and a sealing assembly. The heat preservation cover is installed on the side wall of the punch. The driving assembly is used to drive the heat rod to move. The socket cooperates with the heat rod. The sealing assembly is used to prevent the heat of the heat rod from being lost.

[0013] The hot compress mechanism includes an airflow channel, an elastic rope, a spoiler ball, and an air supply assembly; the air supply assembly is used to provide hot air to the airflow channel, the elastic rope is used to drive the spoiler ball to shake, and the spoiler ball is used to increase the diffusion range of the airflow discharged from the airflow channel;

[0014] Among them, the integrity of the punch is ensured by inserting the hot rod into the socket. After the injection molding is completed, the hot rod is transferred to reduce the total heat contained in the mold after the mold is closed. The heat loss of the hot rod is reduced by the heat insulation cover. When working again and the hot rod is inserted into the socket, the hot rod is used to preheat the mold.

[0015] First, the male mold and the female mold are combined to form a complete mold and a mold cavity, and then the molten raw material is transported to the mold cavity through the material pipe. When the mold cavity is filled with molten raw material, the driving component drives the hot rod to retract into the insulation cover, that is, the hot rod with higher temperature is transferred to the insulation cover, and the insulation cover can be separated from the mold by the action of the sealing component, thereby reducing the heat of the entire mold. Then the water tank is started to drain water into the circulation pipe. The water tank, the refrigerator in the water tank and the circulation pipe cooperate with each other to cool the entire mold, thereby solidifying the molten raw material. When continuous production is performed, when the mold is closed again, under the action of the driving component, the hot rod with higher temperature is inserted into the socket again, so that the entire mold can be heated through heat exchange, reducing the workload of the external heat source and playing a role in saving resources.

[0016] At the same time, under the action of the air supply component, hot air can be provided to the air flow channel, and the hot air flow in the air flow channel impacts the spoiler ball. Under the action of the elastic rope, the spoiler ball swings, thereby changing the flow direction of the gas discharged from the air flow channel. Therefore, during the mold closing process, the hot air flow discharged from the air flow channel on the punch can impact the surface of the die, and the hot air flow discharged from the air flow channel on the die can impact the surface of the punch, further improving the preheating effect of the punch and the die.

[0017] Furthermore, the heat preservation cover is a hollow structure, and the driving assembly includes a first elastic member installed on the inner wall of the heat preservation cover, a mounting plate is installed on the first elastic member, the heat rod is connected to the mounting plate, and a hydraulic rod with an output end connected to the mounting plate is installed on the inner wall of the heat preservation cover.

[0018] After the injection molding is completed, stop injecting the molten raw material into the mold cavity, and then start the hydraulic rod. At this time, the hydraulic rod extends and stretches the first elastic part. After the hydraulic rod is extended to the maximum, the hydraulic rod remains in an extended state, thereby being able to drive the hot rod to be pulled out of the socket, thereby driving the hot rod to move; when the processing is completed and injection molding is performed again, the hydraulic rod is powered off during the mold closing process. At this time, the first elastic part recovers and drives the mounting plate to move, while driving the hydraulic rod to reset, thereby enabling the hot rod to be inserted into the socket again.

[0019] Furthermore, the air supply assembly includes a cavity opened on the first elastic member, an air pipe connected to the air flow channel is inserted on the side wall of the cavity, and an air intake valve cooperating with the heat preservation cover is embedded on the side wall of the cavity.

[0020] Furthermore, a piston is slidably installed in the socket, and guide grooves are provided on the male and female molds, and the guide grooves are connected with the circulation cavity and the end of the socket.

[0021] When cooling water is injected into the circulation cavity through the circulation pipe, part of the cooling water in the circulation cavity passes through the guide groove into the socket under the action of water pressure. At this time, the piston is pushed and slides along the socket, so that the hot air flow in the socket can be squeezed and flows through the socket to the inside of the heat preservation cover, thereby increasing the heat content in the heat preservation cover, and in the process of the first elastic member recovering, the cavity absorbs hot air from the inside of the heat preservation cover through the air intake valve, so under the action of the piston, the socket, the heat preservation cover and the guide groove, it plays a role in providing hot air to the cavity. When the first elastic member is squeezed, the high-temperature gas in the cavity flows through the air pipe into the air flow channel, thus playing a role in providing hot air to the air flow channel.

[0022] Furthermore, by making the piston of the heat-insulating material, heat insulation can be achieved, thereby preventing the heat of the cooling water from being dissipated into the heat-insulating cover, thereby improving the utilization rate of the cooling water and the utilization rate of the heat in the heat-insulating cover.

[0023] Under the action of the guide groove, cooling water enters the plug hole, which is equivalent to increasing the volume of the circulation cavity and improving the heat dissipation effect of the mold.

[0024] Furthermore, the sealing assembly includes a slide groove opened on the side wall of the heat preservation cover, a sealing plate is slidably installed in the slide groove, a second elastic member is installed between the sealing plate and the slide groove, and the side wall of the sealing plate is an inclined surface.

[0025] When the heat rod is retracted into the insulation cover, the second elastic member pushes the sealing plate out of the slide groove, thereby isolating the socket from the insulation cover, thereby retaining the heat in the insulation cover and preventing the heat in the insulation cover from dissipating into the socket, thereby improving the cooling efficiency.

[0026] And under the action of the inclined surface, the hot rod can apply thrust to the inclined surface to retract the blocking plate into the slide groove, so that the hot rod can be extended from the heat preservation cover.

[0027] Furthermore, bumps are evenly arranged on the inner wall of the airflow channel, and the bumps are made of elastic material.

[0028] When the airflow passes through the airflow channel, the direction of the airflow can be initially changed under the action of the protrusion, increasing the contact area between the airflow and the outer wall of the mold. When the mold is closed and the injection molding process is in progress, the airflow stops impacting the spoiler ball. At this time, the elastic rope pulls the spoiler ball to reset. In this process, the spoiler ball hits the protrusion, so that the protrusion is subjected to impact force, and the impact force is transmitted to the raw material in the mold cavity, thereby driving the raw material to shake and evenly shake the raw material. When the surface of the processed part contains a large number of holes, the speed at which the holes are filled with raw materials can be accelerated, thereby improving work efficiency.

[0029] Furthermore, the heat rod is honeycomb-shaped and made of metal, and the heat insulation cover is provided with a blowing mechanism that cooperates with the heat rod.

[0030] Furthermore, the blowing mechanism includes a cavity formed on the second elastic member, a through hole is formed on the side wall of the sealing plate, and two ends of the through hole are respectively connected to the cavity and the slide groove.

[0031] Under the action of the honeycomb structure, the gas inside the honeycomb structure can be kept in a high temperature state. Therefore, when the heat rod is inserted into the socket, the gas in the cavity on the squeezed second elastic member will pass through the through hole and flow into the honeycomb hole, thereby being able to flow the hot air in the honeycomb hole, increasing the probability of this part of the hot air contacting the side wall of the socket and improving the preheating effect.

[0032] Furthermore, a heat-insulating sleeve is provided on the outer wall of the first elastic member.

[0033] Since the first elastic member is connected to the outside through the air pipe and the air flow channel, the heat loss in the cavity can be reduced by arranging a heat preservation sleeve on the outer wall of the first elastic member, thereby ensuring that the gas discharged from the cavity can achieve a preheating effect.

[0034] The present invention also provides a method for using the above-mentioned plastic product injection molding device, comprising the following steps:

[0035] S1, the male mold and the female mold are combined to form a complete mold, and then the molten raw material is injected into the mold cavity of the mold through the material pipe;

[0036] S2. After the mold cavity is filled with raw materials, the driving component drives the hot rod to be pulled out from the socket, and the hot rod enters the interior of the heat preservation cover;

[0037] S3, after the hot rod enters the heat preservation cover, the water tank injects cold water into the circulation chamber through the circulation pipe, at this time, the cold water passes through the guide groove into the plug hole and the piston is pushed by the water flow, and the gas in the plug hole is squeezed into the heat preservation cover;

[0038] S4, during the second mold closing process, the first elastic member is squeezed, the cavity is exhausted outward through the air flow channel, and the spoiler ball and the convex block cooperate with each other to change the air flow direction, thereby increasing the contact area between the hot air flow and the male and female molds;

[0039] S5. After the mold is closed, the elastic rope pulls the spoiler ball to reset, and the spoiler ball hits the protrusion, causing the molten material in the mold cavity to shake.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] (1) This scheme is provided with a socket, a hot rod, a driving assembly, and a heat-insulating cover. After the injection molding is completed, the driving assembly drives the hot rod to be pulled out of the socket, thereby reducing the heat of the entire mold, facilitating the cooling of the mold and the workpiece by the cooling water, and improving the work efficiency. When processing again, the driving assembly drives the hot rod to be inserted into the socket to make the mold complete and prevent the mold from being damaged by pressure during the injection molding process. At the same time, the heat of the hot rod is transferred to the mold in the closed state, which can preheat the mold and play the role of recycling the heat of the hot rod; at the same time, it reduces the temperature difference between the mold and the molten raw material, which plays the role of protecting the mold.

[0042] (2) This scheme, by providing an air flow channel, a spoiler ball, an elastic rope, and a protrusion, can initially change the direction of the air flow through the protrusion when the air flow passes through the air flow channel, thereby increasing the contact area between the air flow and the outer wall of the mold. When the mold is closed and the injection molding process is in progress, the air flow stops impacting the spoiler ball. At this time, the elastic rope pulls the spoiler ball to reset. During this process, the spoiler ball hits the protrusion, so that the protrusion is subjected to impact force, and the impact force is transmitted to the raw material in the mold cavity, thereby driving the raw material to shake and evenly shake the raw material. When the surface of the processed part contains a large number of holes, the speed at which the holes are filled with raw materials can be accelerated, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of a first three-dimensional structure of the present invention;

[0044] Figure 2 It is a schematic diagram of a second three-dimensional structure of the present invention;

[0045] Figure 3 It is a schematic diagram of the combined cross-sectional structure of the concave mold and the convex mold of the present invention;

[0046] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0047] Figure 5 It is a schematic cross-sectional structural diagram of the punch of the present invention;

[0048] Figure 6 It is a schematic diagram of the top view of the structure of the present invention;

[0049] Figure 7 It is a schematic structural diagram of the heat rod of the present invention.

[0050] Description of the numbers in the figure:

[0051] 1. Drying barrel; 2. Material pipe; 3. Punch; 4. Die; 5. Water tank; 6. Circulation pipe; 7. Circulation cavity; 8. Insulation cover; 9. Socket; 10. Hot rod; 11. Air flow channel; 12. Elastic rope; 13. Spoiler ball; 14. First elastic part; 15. Mounting plate; 16. Hydraulic rod; 17. Cavity; 18. Air pipe; 19. Inlet valve; 20. Piston; 21. Guide groove; 22. Sealing plate; 23. Second elastic part; 24. Bump; 25. Cavity; 26. Through hole; 27. Insulation cover. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Example

[0053] See also Figures 1 to 7 , a plastic product injection molding device and its use method, comprising a drying barrel 1, a material pipe 2, a male mold 3 and a female mold 4, wherein the drying barrel 1 is used to provide dry raw materials to the material pipe 2, and the material pipe 2 is used to provide molten raw materials;

[0054] Also includes:

[0055] The cooling mechanism includes a water tank 5, a circulation pipe 6, and a circulation chamber 7. The water tank 5 is used to provide cold water, and the circulation pipe 6 is used to connect the circulation chamber 7 and the water tank 5.

[0056] The transfer mechanism includes a heat preservation cover 8, a socket 9, a heat rod 10, a driving assembly, and a sealing assembly. The heat preservation cover 8 is installed on the side wall of the punch 3. The driving assembly is used to drive the heat rod 10 to move. The socket 9 cooperates with the heat rod 10. The sealing assembly is used to prevent the heat of the heat rod 10 from being lost.

[0057] The hot compress mechanism comprises an air flow channel 11, an elastic rope 12, a spoiler ball 13, and an air supply assembly; the air supply assembly is used to provide hot air to the air flow channel 11, the elastic rope 12 is used to drive the spoiler ball 13 to shake, and the spoiler ball 13 is used to increase the diffusion range of the air flow discharged from the air flow channel 11;

[0058] Among them, the integrity of the punch 3 is ensured by inserting the heat rod 10 into the socket 9. After the injection molding is completed, the heat rod 10 is transferred to reduce the total heat contained in the mold after the mold is closed. The heat preservation cover 8 is used to reduce the heat loss of the heat rod 10. When working again and the heat rod 10 is inserted into the socket 9, the heat rod 10 is used to preheat the mold.

[0059] First, the male mold 3 and the female mold 4 are combined to form a complete mold and a mold cavity, and then the molten raw material is transported to the mold cavity through the material pipe 2. When the mold cavity is filled with the molten raw material, the hot rod 10 is driven by the driving component to retract into the insulation cover 8, that is, the hot rod 10 with a higher temperature is transferred to the insulation cover 8, and the insulation cover 8 can be separated from the mold by the action of the sealing component, thereby reducing the heat of the entire mold. Then the water tank 5 is started to drain water into the circulation pipe 6. Through the cooperation of the water tank 5, the refrigerator in the water tank 5 and the circulation pipe 6, the entire mold can be cooled, thereby solidifying the molten raw material; when continuous production is performed, when the mold is closed again, under the action of the driving component, the hot rod 10 with a higher temperature is inserted into the socket 9 again, so that the entire mold can be heated by heat exchange, reducing the workload of the external heat source and playing a role in saving resources.

[0060] At the same time, under the action of the air supply component, hot air can be provided to the air flow channel 11, and the hot air flow in the air flow channel 11 impacts the spoiler ball 13. Under the action of the elastic rope 12, the spoiler ball 13 swings, thereby changing the flow direction of the gas discharged from the air flow channel 11. Therefore, during the mold closing process, the hot air flow discharged from the air flow channel 11 on the punch 3 can impact the surface of the die 4, and the hot air flow discharged from the air flow channel 11 on the die 4 can impact the surface of the punch 3, further improving the preheating effect of the punch 3 and the die 4.

[0061] like Figure 3 As shown, the heat preservation cover 8 is a hollow structure, and the driving assembly includes a first elastic member 14 installed on the inner wall of the heat preservation cover 8, a mounting plate 15 is installed on the first elastic member 14, the heat rod 10 is connected to the mounting plate 15, and a hydraulic rod 16 with an output end connected to the mounting plate 15 is installed on the inner wall of the heat preservation cover 8.

[0062] By adopting the above technical solution, after the injection molding is completed, the injection of molten raw materials into the mold cavity is stopped, and then the hydraulic rod 16 is started. At this time, the hydraulic rod 16 extends and stretches the first elastic member 14. After the hydraulic rod 16 is extended to the maximum, the hydraulic rod 16 remains in the extended state, thereby being able to drive the hot rod 10 to be pulled out of the socket 9, thereby driving the hot rod 10 to move; when the processing is completed and injection molding is performed again, the hydraulic rod 16 is powered off during the mold closing process. At this time, the first elastic member 14 is restored and drives the mounting plate 15 to move, while driving the hydraulic rod 16 to reset, thereby enabling the hot rod 10 to be inserted into the socket 9 again.

[0063] like Figure 3 , Figure 4 As shown, the air supply assembly includes a cavity 17 opened on the first elastic member 14, an air pipe 18 connected to the air flow channel 11 is inserted on the side wall of the cavity 17, and an air intake valve 19 cooperating with the heat preservation cover 8 is embedded on the side wall of the cavity 17.

[0064] A piston 20 is slidably installed in the insertion hole 9 , and a guide groove 21 is provided on the male die 3 and the female die 4 , and the guide groove 21 is connected with the circulation chamber 7 and the end of the insertion hole 9 .

[0065] By adopting the above technical solution, when cooling water is injected into the circulation chamber 7 through the circulation pipe 6, part of the cooling water in the circulation chamber 7 passes through the guide groove 21 into the plug hole 9 under the action of water pressure, and at this time the piston 20 is pushed and slides along the plug hole 9, so that the hot air flow in the plug hole 9 can be squeezed and flows through the plug hole 9 to the inside of the heat preservation cover 8, thereby increasing the heat content in the heat preservation cover 8, and in the process of the first elastic member 14 recovering, the cavity 17 absorbs hot air from the inside of the heat preservation cover 8 through the air intake valve 19, so under the action of the piston 20, the plug hole 9, the heat preservation cover 8 and the guide groove 21, it plays a role in providing hot air for the cavity 17. When the first elastic member 14 is squeezed, the high-temperature gas in the cavity 17 flows through the air pipe 18 into the air flow channel 11, so it plays a role in providing hot air for the air flow channel 11.

[0066] Furthermore, by making the piston 20 of a heat-insulating material, heat insulation can be achieved, thereby preventing the heat of the cooling water from being dissipated into the heat-insulating cover 8 , thereby improving the utilization rate of the cooling water and the utilization rate of the heat in the heat-insulating cover 8 .

[0067] Under the action of the guide groove 21, the cooling water enters the insertion hole 9, which is equivalent to increasing the volume of the circulation cavity 7 and improving the heat dissipation effect on the mold.

[0068] like Figure 4 As shown, the sealing assembly includes a slide groove opened on the side wall of the heat preservation cover 8, a sealing plate 22 is slidably installed in the slide groove, a second elastic member 23 is installed between the sealing plate 22 and the slide groove, and the side wall of the sealing plate 22 is an inclined surface.

[0069] By adopting the above technical solution, when the heat rod 10 is retracted into the insulation cover 8, the second elastic member 23 pushes the sealing plate 22 to extend out of the slide groove, thereby isolating the socket 9 from the insulation cover 8, thereby retaining the heat in the insulation cover 8, and preventing the heat in the insulation cover 8 from dissipating into the socket 9, thereby improving the cooling efficiency.

[0070] And under the action of the inclined surface, the heat rod 10 can apply a thrust to the inclined surface to retract the blocking plate into the slide groove, thereby enabling the heat rod 10 to extend from the heat preservation cover 8.

[0071] like Figure 4 As shown, bumps 24 are evenly disposed on the inner wall of the air flow channel 11 , and the bumps 24 are made of elastic material.

[0072] By adopting the above technical solution, when the airflow passes through the airflow channel 11, the airflow direction can be preliminarily changed under the action of the protrusion 24, thereby increasing the contact area between the airflow and the outer wall of the mold. When the mold is closed and the injection molding process is completed, the airflow stops impacting the spoiler ball 13. At this time, the elastic rope 12 pulls the spoiler ball 13 to reset. In this process, the spoiler ball 13 hits the protrusion 24, so that the protrusion 24 is subjected to impact force, and the impact force is transmitted to the raw material in the mold cavity, thereby driving the raw material to shake and evenly shake the raw material. When the surface of the processed part contains a large number of holes, the speed at which the holes are filled with the raw material can be accelerated, thereby improving work efficiency.

[0073] like Figure 7 As shown, the heat rod 10 is honeycomb-shaped and made of metal, and the heat insulation cover 8 is provided with a blowing mechanism that cooperates with the heat rod 10 .

[0074] The blowing mechanism includes a cavity 25 formed on the second elastic member 23 . A through hole 26 is formed on the side wall of the sealing plate 22 . Two ends of the through hole 26 are connected to the cavity 25 and the slide groove respectively.

[0075] By adopting the above technical solution, the gas inside the honeycomb structure can be kept in a high temperature state under the action of the honeycomb structure. Therefore, when the heat rod 10 is inserted into the socket 9, the gas in the cavity 25 on the squeezed second elastic member 23 will pass through the through hole 26 and flow into the honeycomb hole, thereby making it possible to flow the hot air in the honeycomb hole, thereby increasing the probability of this part of the hot air contacting the side wall of the socket 9 and improving the preheating effect.

[0076] like Figure 4 As shown, the outer wall of the first elastic member 14 is provided with a heat-insulating sleeve 27 .

[0077] By adopting the above technical solution, since the first elastic member 14 is connected to the outside through the air pipe 18 and the air flow channel 11, the heat loss in the cavity 17 can be reduced by arranging the insulation sleeve 27 on the outer wall of the first elastic member 14, thereby ensuring that the gas discharged from the cavity 17 can have a preheating effect.

[0078] The present invention also provides a method for using the above-mentioned plastic product injection molding device, comprising the following steps:

[0079] S1, the male mold 3 and the female mold 4 are combined to form a complete mold, and then the molten raw material is injected into the mold cavity of the mold through the material pipe 2;

[0080] S2, after the mold cavity is filled with raw materials, the driving assembly drives the hot rod 10 to be pulled out from the insertion hole 9, and the hot rod 10 enters the interior of the heat preservation cover 8;

[0081] S3, after the hot rod 10 enters the heat preservation cover 8, the water tank 5 injects cold water into the circulation chamber 7 through the circulation pipe 6, at this time, the cold water passes through the guide groove 21 into the plug hole 9 and the piston 20 is pushed by the water flow, and the gas in the plug hole 9 is squeezed into the heat preservation cover 8;

[0082] S4, during the second mold closing process, the first elastic member 14 is squeezed, the cavity 17 is exhausted to the outside through the air flow channel 11, and the spoiler ball 13 cooperates with the convex block 24 to change the air flow direction, thereby increasing the contact area between the hot air flow and the male mold 3 and the female mold 4;

[0083] S5. After the mold is closed, the elastic rope 12 pulls the spoiler ball 13 to reset, and the spoiler ball 13 hits the protrusion 24, causing the molten material in the mold cavity to shake.

[0084] Instructions for use: First, the male mold 3 and the female mold 4 are combined to form a complete mold and a mold cavity, and then the molten raw material is transported to the mold cavity through the material pipe 2. When the mold cavity is filled with the molten raw material, the hot rod 10 is driven to retract into the heat preservation cover 8 through the driving component, that is, the hot rod 10 with a higher temperature is transferred to the heat preservation cover 8, and the heat preservation cover 8 can be separated from the mold by the action of the sealing component, thereby reducing the heat of the entire mold, and then the water tank 5 is started to drain water into the circulation pipe 6. Through the cooperation of the water tank 5, the refrigerator in the water tank 5 and the circulation pipe 6, the entire mold can be cooled, thereby solidifying the molten raw material; when continuous production is performed, when the mold is combined again, under the action of the driving component, the hot rod 10 with a higher temperature is inserted into the socket 9 again, so that the entire mold can be heated through heat exchange, reducing the workload of the external heat source and playing a role in saving resources.

[0085] At the same time, under the action of the air supply component, hot air can be provided to the air flow channel 11, and the hot air flow in the air flow channel 11 impacts the spoiler ball 13. Under the action of the elastic rope 12, the spoiler ball 13 swings, thereby changing the flow direction of the gas discharged from the air flow channel 11. Therefore, during the mold closing process, the hot air flow discharged from the air flow channel 11 on the punch 3 can impact the surface of the die 4, and the hot air flow discharged from the air flow channel 11 on the die 4 can impact the surface of the punch 3. After the injection molding is completed, the injection of molten raw materials into the mold cavity is stopped, and then the hydraulic rod 16 is started. At this time, the hydraulic rod 16 extends and stretches the first elastic member 14. When the hydraulic rod 16 is extended to the maximum, the hydraulic rod 16 remains in an extended state, thereby being able to drive the hot rod 10 to be pulled out of the socket 9, thereby driving the hot rod 10 to move ; when the processing is completed and injection molding is performed again, the hydraulic rod 16 is powered off during the mold closing process. At this time, the first elastic member 14 recovers and drives the mounting plate 15 to move, and at the same time drives the hydraulic rod 16 to reset. When the cooling water is injected into the circulation chamber 7 through the circulation pipe 6, part of the cooling water in the circulation chamber 7 passes through the guide groove 21 into the socket 9 under the action of water pressure. At this time, the piston 20 is pushed and slides along the socket 9, so that the hot air flow in the socket 9 can be squeezed and flows through the socket 9 to the inside of the insulation cover 8, thereby increasing the heat content in the insulation cover 8, and in the process of the first elastic member 14 recovering, the cavity 17 absorbs hot air from the inside of the insulation cover 8 through the intake valve 19. Therefore, under the action of the piston 20, the socket 9, the insulation cover 8 and the guide groove 21, it plays a role in providing hot air for the cavity 17. When the first elastic member 14 is squeezed, the high-temperature gas in the cavity 17 flows through the air pipe 18 to the air flow channel 11; and the piston 20 made of thermal insulation material can be insulated, thereby preventing the heat of the cooling water from dissipating into the thermal insulation cover 8. Under the action of the guide groove 21, the cooling water enters the socket 9, which is equivalent to increasing the volume of the circulation chamber 7 and improving the heat dissipation effect on the mold.

[0086] When the hot rod 10 is retracted into the insulation cover 8, the second elastic member 23 pushes the sealing plate 22 to extend out of the slide groove, thereby isolating the socket 9 from the insulation cover 8, thereby keeping the heat in the insulation cover 8 and preventing the heat in the insulation cover 8 from being dissipated into the socket 9. When the airflow passes through the airflow channel 11, the airflow direction can be initially changed under the action of the protrusion 24, thereby increasing the contact area between the airflow and the outer wall of the mold. When the mold is closed and the injection molding process is in progress, the airflow stops impacting the spoiler ball 13. At this time, the elastic rope 12 pulls the spoiler ball 13 to reset. In this process, the spoiler ball 13 hits the protrusion 24, thereby causing the protrusion 24 to be subjected to impact force, and the impact force is transmitted to the raw material in the mold cavity, thereby driving the raw material to shake and evenly shake the raw material. When the surface of the processed part contains a large number of holes, the speed at which the raw material fills the holes can be accelerated, thereby improving work efficiency.

[0087] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic product injection molding device, comprising a drying barrel (1), a material pipe (2), a male mold (3) and a female mold (4), wherein the drying barrel (1) is used to provide dry raw materials to the material pipe (2), and the material pipe (2) is used to provide molten raw materials; characterized in that: Also includes: The cooling mechanism comprises a water tank (5), a circulation pipe (6), and a circulation chamber (7), wherein the water tank (5) is used to provide cold water, and the circulation pipe (6) is used to connect the circulation chamber (7) and the water tank (5); The transfer mechanism comprises a heat preservation cover (8), a socket (9), a heat rod (10), a driving assembly, and a sealing assembly, wherein the heat preservation cover (8) is mounted on the side wall of the male mold (3), the driving assembly is used to drive the heat rod (10) to move, the socket (9) cooperates with the heat rod (10), and the sealing assembly is used to prevent heat loss from the heat rod (10); A hot compress mechanism, comprising an air flow channel (11), an elastic rope (12), a spoiler ball (13), and an air supply assembly; the air supply assembly is used to provide hot air to the air flow channel (11), the elastic rope (12) is used to drive the spoiler ball (13) to shake, and the spoiler ball (13) is used to increase the diffusion range of the air flow discharged from the air flow channel (11); The integrity of the male mold (3) is ensured by inserting the hot rod (10) into the insertion hole (9). After the injection molding is completed, the hot rod (10) is transferred to reduce the total heat contained in the mold after the mold is closed. The heat preservation cover (8) is used to reduce the amount of heat loss of the hot rod (10). When the hot rod (10) is inserted into the insertion hole (9) when working again, the hot rod (10) is used to preheat the mold. The heat preservation cover (8) is a hollow structure, the drive assembly comprises a first elastic member (14) mounted on the inner wall of the heat preservation cover (8), a mounting plate (15) is mounted on the first elastic member (14), the heat rod (10) is connected to the mounting plate (15), and a hydraulic rod (16) whose output end is connected to the mounting plate (15) is mounted on the inner wall of the heat preservation cover (8); The air supply assembly comprises a cavity (17) formed on the first elastic member (14); an air pipe (18) communicating with the air flow channel (11) is inserted into the side wall of the cavity (17); and an air intake valve (19) cooperating with the heat preservation cover (8) is embedded in the side wall of the cavity (17); A piston (20) is slidably mounted in the insertion hole (9), and a guide groove (21) is provided on the male mold (3) and the female mold (4), wherein the guide groove (21) is connected to the circulation chamber (7) and the end of the insertion hole (9); The sealing assembly comprises a slide groove formed on a side wall of the heat-insulating cover (8), a sealing plate (22) being slidably mounted in the slide groove, a second elastic member (23) being mounted between the sealing plate (22) and the slide groove, and a side wall of the sealing plate (22) being an inclined surface; Bumps (24) are evenly arranged on the inner wall of the airflow channel (11), and the bumps (24) are made of elastic material.

2. A plastic product injection molding device according to claim 1, characterized in that: The heating rod (10) is honeycomb-shaped and made of metal, and an air blowing mechanism cooperating with the heating rod (10) is provided on the heat-insulating cover (8).

3. A plastic product injection molding device according to claim 2, characterized in that: The blowing mechanism comprises a cavity (25) formed on the second elastic member (23); a through hole (26) is formed on the side wall of the sealing plate (22); two ends of the through hole (26) are respectively connected to the cavity (25) and the slide groove.

4. A plastic product injection molding device according to claim 3, characterized in that: The outer wall of the first elastic member (14) is provided with a heat-insulating sleeve (27).

5. A method for using the plastic product injection molding device according to any one of claims 1 to 4, characterized in that: The steps include: S1, the male mold (3) and the female mold (4) are combined to form a complete mold, and then the material is injected into the mold cavity through the material pipe (2). Molten raw materials; S2, after the mold cavity is filled with raw materials, the driving assembly drives the hot rod (10) to be pulled out from the insertion hole (9), and the hot rod (10) enters the interior of the heat preservation cover (8); S3, after the hot rod (10) enters the interior of the heat preservation cover (8), the water tank (5) injects cold water into the circulation chamber (7) through the circulation pipe (6), and the cold water passes through the guide groove (21) and enters the plug hole (9), and the piston (20) is pushed by the water flow, and the gas in the plug hole (9) is squeezed into the interior of the heat preservation cover (8); S4, during the second mold closing process, the first elastic member (14) is squeezed, the cavity (17) is exhausted to the outside through the air flow channel (11), and the spoiler ball (13) and the protrusion (24) cooperate with each other to change the air flow direction, thereby increasing the contact area between the hot air flow and the male mold (3) and the female mold (4); S5. After the mold is closed, the elastic rope (12) pulls the spoiler ball (13) to reset, and the spoiler ball (13) hits the protrusion (24), causing the molten material in the mold cavity to vibrate.

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