A plastic toy injection mold that is easy to dissipate heat

Abstract

The present invention relates to the technical field of plastic toy production, and discloses a plastic toy injection mold that is easy to dissipate heat, comprising a base, the end of the auxiliary speed-changing lifting mechanism being connected to a first oil storage tank, one side of the support plate being connected to a movable plate via an electric telescopic rod, a second mold being fixed to one side of the movable plate, and an injection valve and a demoulding mechanism being fixed to the second mold. The plastic toy injection mold that is easy to dissipate heat, after completing the injection operation, opens the injection valve to introduce coolant into the cooling channel, thereby accelerating the molding speed of the raw material. Since the coolant flows from top to bottom, the cooling effect becomes worse the further down the coolant flows, and new coolant is introduced into the lower half of the cooling channel by utilizing the injection pipe, the movable channel and the docking pipe. At the same time, the movable channel moves downward along with the slider, thereby balancing the cooling effect and facilitating uniform heat dissipation of the upper and lower parts of the raw material. The branch channel can cool the bottom of the raw material.

Description

Technical Field

[0001] The invention relates to the technical field of plastic toy production, in particular to a plastic toy injection mold which is easy to dissipate heat. Background Art

[0002] Plastic toys are toys made of plastic as the main raw material. According to the plastic molding process, they are divided into injection molded toys, blow molded toys, rotational molded toys, slush molded toys, inflatable toys, etc. Injection molded toys are made by heating the raw materials into liquid by an injection molding machine, injecting them into the mold and cooling them into shape. Therefore, injection molds can be used to make plastic toys.

[0003] After completing the injection operation, existing injection molds generally need to wait for the raw materials to be formed, and the static cooling time is relatively long, which will affect production efficiency. The general cooling method uses water cooling, and the coolant flows in the side wall of the mold to speed up the raw material molding speed. However, the flow direction of the coolant is generally fixed. The further the coolant flows to the back, the worse the cooling effect. This will cause uneven heat dissipation of the entire raw material, thereby affecting the quality of the finished product. In response to the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a plastic toy injection mold that is easy to dissipate heat, so as to solve the problem raised in the above background technology that the existing injection mold generally needs to wait for the raw material to be formed after completing the injection operation, and the static cooling time is relatively long, which affects the production efficiency. The general cooling method adopts water cooling treatment, and the coolant flows in the side wall of the mold to speed up the raw material molding speed. However, the flow direction of the coolant is generally fixed. The further the coolant flows to the back, the worse the cooling effect is, which will lead to uneven heat dissipation effect of the entire raw material, thereby affecting the quality of the finished product.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A plastic toy injection mold that is easy to dissipate heat, comprising a base, a support plate fixed to the upper end surface of the base, a support rod fixed to one side of the support plate, a first mold fixed to one end of the support rod, a cooling channel provided in the side wall of the first mold, a branch channel provided in the bottom of the first mold, the branch channel being connected to the cooling channel through a connecting pipe, a first oil storage tank provided in the side wall of the first mold, a first piston being slidably connected in the first oil storage tank, a slider being fixed to the bottom of the first piston, a slide groove provided on an inner wall of the cooling channel, the slider being slidably connected in the slide groove, a moving channel fixed to one side of the slider, a docking pipe fixed to the inner side wall of the moving channel, an auxiliary speed change lifting mechanism fixed to one side of the first mold, and the end of the auxiliary speed change lifting mechanism being connected to the first oil storage tank.

[0006] One side of the support plate is connected to the movable plate through an electric telescopic rod. A second mold is fixed on one side of the movable plate. An injection valve and a demoulding mechanism are fixed on the second mold.

[0007] Preferably, a liquid injection valve is fixed on the top of the first mold, and a liquid outlet valve is fixed on the bottom of the first mold, and three of the liquid injection valves and three of the liquid outlet valves are provided.

[0008] Preferably, a liquid injection pipe is fixed on one side of the movable channel, and the liquid injection pipe passes through the slider and the bottom of the first mold.

[0009] Preferably, the auxiliary speed-changing lifting mechanism includes an oil storage box, and the oil storage box is fixed on one side of the cooling channel, a bracket is fixed on one side of the oil storage box, and a forward and reverse motor is fixed at the bottom of the bracket, the bottom of the forward and reverse motor is connected to the incomplete gear, and a locking plate is fixed at the bottom of the incomplete gear.

[0010] Preferably, a fixing frame is fixed on one side of the oil storage box, and a sleeve is rotatably connected to the fixing frame, two limiting rings are fixed on the outside of the sleeve, the fixing frame is located between the two limiting rings, a circular gear is fixed to the bottom of the sleeve, and the circular gear is meshed and connected to one side of the incomplete gear, and two convex strips are fixed to the bottom of the circular gear.

[0011] Preferably, a screw rod is connected to the inner thread of the sleeve, and the screw rod passes through the bottom of the oil storage box and is connected to the second piston. A limiting rod is fixed in the second piston, and a third piston is slidably connected in the second piston. The limiting rod passes through the third piston, and the third piston is connected to the inner wall of the second piston through a first compression spring.

[0012] Preferably, an air hole is provided at the bottom of the oil storage box, and the oil storage box is connected to the first oil storage tank through a first connecting pipe.

[0013] Preferably, the demolding mechanism includes a hydraulic cylinder, and the hydraulic cylinder is fixed in the side wall of the second mold, a hydraulic rod is provided on the inner side of the hydraulic cylinder, a second oil storage tank is opened in the side wall of the second mold, and a fourth piston is slidably connected in the second oil storage tank, the fourth piston is connected to the inner top of the second oil storage tank through a second compression spring, and the second compression spring is wrapped around the outside of the hydraulic rod, the hydraulic rod passes through the fourth piston and is connected to the clamping column, a groove is opened on one side of the second mold, and the clamping column extends into the groove.

[0014] Preferably, an oil storage cylinder is fixed on the other side of the second mold, and the oil storage cylinder is connected to the second oil storage tank through a second connecting pipe. A fifth piston is slidably connected in the oil storage cylinder, and a push block is fixed on one side of the fifth piston, and the push block is slidably connected in the groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The plastic toy injection mold that is easy to dissipate heat can achieve the purpose of uniform heat dissipation through the mutual use of the cooling channel, branch channel, slider, movable channel, docking pipe, injection pipe and injection valve. After the injection operation is completed, the injection valve is opened to introduce coolant into the cooling channel, which is convenient for accelerating the molding speed of the raw material. Since the coolant flows from top to bottom, the cooling effect becomes worse the lower the coolant flows. New coolant is introduced into the lower half of the cooling channel by using the injection pipe, movable channel and docking pipe. At the same time, the movable channel moves downward with the slider to balance the cooling effect and facilitate uniform heat dissipation of the upper and lower parts of the raw material. The branch channel can cool the bottom of the raw material.

[0017] 2. The plastic toy injection mold that is easy to dissipate heat can achieve the purpose of changing the cooling time by coordinating the first piston, slider, movable channel, oil storage box, incomplete gear, sleeve, circular gear, second piston and third piston. The incomplete gear can rotate forward and reverse, thereby driving the circular gear and sleeve forward and reverse. The second piston and the third piston can move up and down, thereby driving the first piston, slider and movable channel to move up and down. Since the right inner wall of the oil storage box is inclined inward, when the second piston and the third piston move up, the extruded hydraulic oil gradually decreases, and the downward movement speed of the movable channel gradually decreases, so that the lower layer of raw materials can be cooled for a longer time, ensuring uniform cooling.

[0018] 3. The plastic toy injection mold that is easy to dissipate heat can achieve the purpose of automatic demolding through the mutual cooperation of the first mold, the second mold, the fourth piston, the clamping column, the groove and the fifth piston. During injection, part of the raw material will enter the groove. After the raw material is formed, the clamping column is clamped into the plastic toy. When the second mold moves to the right, it can drive the plastic toy to move to the right, so that the plastic toy is separated from the first mold. After that, the clamping column moves and leaves the plastic toy, and the clamping column squeezes the fourth piston to move. The fifth piston and the push plate move to the left, which facilitates the automatic pushing down of the plastic toy for quick demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0021] Figure 3 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0022] Figure 4 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0023] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0024] Figure 6 This is a schematic diagram of the connection structure of the first mold, cooling channel, branch channel and connecting pipe of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure of the first piston, slider, moving channel, docking pipe and injection pipe of the present invention;

[0026] Figure 8 This is a schematic structural diagram of the auxiliary speed-changing lifting mechanism of the present invention;

[0027] Figure 9 This is a schematic diagram of the connection structure of the incomplete gear, lock plate and circular gear of the present invention;

[0028] Figure 10 It is a schematic diagram of the connection structure of the second piston, the limiting rod, the third piston and the first compression spring of the present invention.

[0029] In the figure: 1. base; 2. support plate; 3. support rod; 4. first mold; 5. cooling channel; 6. injection valve; 7. liquid outlet valve; 8. branch channel; 9. connecting pipe; 10. first oil storage tank; 11. first piston; 12. slider; 13. slideway; 14. moving channel; 15. docking pipe; 16. injection pipe; 17. auxiliary speed-changing lifting mechanism; 1701. oil storage box; 1702. bracket; 1703. forward and reverse motor; 1704. incomplete gear; 1705. lock plate; 1706. fixing frame; 1707. sleeve; 1708. limit ring; 1709. circular gear; 1710. convex strip; 1711. Screw rod; 1712. Second piston; 1713. Limit rod; 1714. Third piston; 1715. First compression spring; 1716. Air hole; 1717. First connecting pipe; 18. Electric telescopic rod; 19. Moving plate; 20. Second mold; 21. Injection valve; 22. Demolding mechanism; 2201. Hydraulic cylinder; 2202. Hydraulic rod; 2203. Fourth piston; 2204. Second oil storage tank; 2205. Second compression spring; 2206. Clamping column; 2207. Groove; 2208. Second connecting pipe; 2209. Oil storage cylinder; 2210. Fifth piston; 2211. Push block. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figures 1 to 10 The present invention provides a technical solution: a plastic toy injection mold that is easy to dissipate heat, comprising a base 1, a support plate 2 is fixed to the upper end surface of the base 1, a support rod 3 is fixed to one side of the support plate 2, a first mold 4 is fixed to one end of the support rod 3, a cooling channel 5 is opened in the side wall of the first mold 4, a branch channel 8 is opened in the bottom of the first mold 4, the branch channel 8 is connected to the cooling channel 5 through a connecting pipe 9, a first oil storage tank 10 is opened in the side wall of the first mold 4, a first piston 11 is slidably connected in the first oil storage tank 10, a slider 12 is fixed to the bottom of the first piston 11, a slide groove 13 is opened on an inner wall of the cooling channel 5, the slider 12 is slidably connected in the slide groove 13, a moving channel 14 is fixed to one side of the slider 12, a docking pipe 15 is fixed to the inner side wall of the moving channel 14, an auxiliary speed change lifting mechanism 17 is fixed to one side of the first mold 4, and the end of the auxiliary speed change lifting mechanism 17 is connected to the first oil storage tank 10.

[0032] One side of the support plate 2 is connected to the movable plate 19 via an electric telescopic rod 18 . A second mold 20 is fixed to one side of the movable plate 19 . A filling valve 21 and a demoulding mechanism 22 are fixed to the second mold 20 .

[0033] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, a liquid injection valve 6 is fixed on the top of the first mold 4, and a liquid outlet valve 7 is fixed on the bottom of the first mold 4. The liquid injection valve 6 and the liquid outlet valve 7 are both connected to the cooling channel 5, and there are three liquid injection valves 6 and three liquid outlet valves 7. After opening the liquid injection valve 6, coolant can be introduced into the cooling channel 5, and opening the liquid outlet valve 7 can discharge the coolant in the cooling channel 5. The coolant can cool the raw material, thereby accelerating the molding speed of the raw material.

[0034] In this embodiment, Figure 2 and Figure 7As shown, a liquid injection pipe 16 is fixed on one side of the movable channel 14, and the liquid injection pipe 16 passes through the bottom of the slider 12 and the first mold 4. Before using the device, the liquid injection pipe 16 needs to be connected to the liquid supply pipe. The liquid injection pipe 16 can pass coolant into the movable channel 14, and the coolant can flow into the cooling channel 5 through the docking pipe 15. After the movable channel 14 moves downward and the docking pipe 15 corresponds to the connecting pipe 9, the coolant injected from the liquid injection pipe 16 can flow into the connecting pipe 9 and the branch channel 8, which facilitates the enhancement of the cooling effect and makes the cooling effect of the cooling channel 5 more uniform.

[0035] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 8 and Figure 9 As shown, the auxiliary speed-changing lifting mechanism 17 includes an oil storage box 1701, and the oil storage box 1701 is fixed on one side of the cooling channel 5. A bracket 1702 is fixed on one side of the oil storage box 1701, and a forward and reverse motor 1703 is fixed to the bottom of the bracket 1702. The bottom of the forward and reverse motor 1703 is connected to the incomplete gear 1704, and a lock plate 1705 is fixed to the bottom of the incomplete gear 1704. The incomplete gear 1704 can rotate under the action of the forward and reverse motor 1703, and the lock plate 1705 rotates accordingly.

[0036] In this embodiment, Figure 2 、 Figure 3 、 Figure 5 、 Figure 8 and Figure 9 As shown, a fixing frame 1706 is fixed to one side of the oil storage box 1701, and a sleeve 1707 is rotatably connected to the fixing frame 1706. Two limiting rings 1708 are fixed to the outside of the sleeve 1707. The fixing frame 1706 is located between the two limiting rings 1708. A circular gear 1709 is fixed to the bottom of the sleeve 1707, and the circular gear 1709 is meshed and connected to one side of the incomplete gear 1704. Two ridges 1710 are fixed to the bottom of the circular gear 1709. When the gear 1704 rotates and meshes with the circular gear 1709, the circular gear 1709 can rotate along with the rotation of the incomplete gear 1704, thereby driving the sleeve 1707 to rotate. The two limiting rings 1708 limit the sleeve 1707. When the incomplete gear 1704 is not meshed with the circular gear 1709, the locking plate 1705 will be stuck between the two protrusions 1710, so as to lock the circular gear 1709 and prevent the circular gear 1709 from rotating on its own.

[0037] In this embodiment, Figure 2 、 Figure 8 and Figure 10As shown, the sleeve 1707 is internally threaded with a screw rod 1711, and the screw rod 1711 passes through the bottom of the oil storage box 1701 and is connected to the second piston 1712. A limiting rod 1713 is fixed in the second piston 1712, and a third piston 1714 is slidably connected in the second piston 1712. The limiting rod 1713 passes through the third piston 1714, and the third piston 1714 is connected to the inner wall of the second piston 1712 through a first compression spring 1715. The sleeve 1707 and the oil storage box 1701 can limit the screw rod 1711. When the sleeve 1707 rotates, the screw rod 1711 moves up and down, thereby driving the second piston 1712 and the third piston 1714 to move up and down as a whole. The first compression spring 171 5 plays a supporting role for the third piston 1714. The third piston 1714 and the second piston 1712 form a telescopic structure. The limit rod 1713 plays a limiting support role for the third piston 1714. Since the inner wall of the oil storage box 1701 that fits the third piston 1714 is inclined inward, when the third piston 1714 and the second piston 1712 move upward as a whole, the third piston 1714 will be squeezed by the inner wall of the oil storage box 1701 and move to the left, the hydraulic oil squeezed out will gradually decrease, and the hydraulic pressure will gradually decrease. When the third piston 1714 and the second piston 1712 move downward as a whole, the third piston 1714 will bounce to the right under the action of the first compression spring 1715, the hydraulic oil drawn in will gradually increase, and the hydraulic pressure will gradually increase.

[0038] In this embodiment, Figure 2 and Figure 3 As shown, an air hole 1716 is provided at the bottom of the oil storage box 1701, and the oil storage box 1701 is connected to the first oil storage tank 10 through a first connecting pipe 1717. The air hole 1716 can be used for extracting and exhausting air, and the first connecting pipe 1717 serves to connect the oil storage box 1701 and the first oil storage tank 10.

[0039] In this embodiment, Figure 2 and Figure 4As shown, the demoulding mechanism 22 includes a hydraulic cylinder 2201, and the hydraulic cylinder 2201 is fixed in the side wall of the second mold 20, a hydraulic rod 2202 is provided on the inner side of the hydraulic cylinder 2201, a second oil storage tank 2204 is provided in the side wall of the second mold 20, and a fourth piston 2203 is slidably connected in the second oil storage tank 2204, the fourth piston 2203 is connected to the inner top of the second oil storage tank 2204 through a second compression spring 2205, and the second compression spring 2205 is wrapped around the outer side of the hydraulic rod 2202, the hydraulic rod 2202 passes through the fourth piston 2203 and is connected to the clamping column 2206, and one side of the second mold 20 is provided with a second oil storage tank 2204. There is a groove 2207, and the clamping column 2206 extends into the groove 2207. When the hydraulic rod 2202 is extended or retracted, it will drive the clamping column 2206 to move up and down. The clamping column 2206 initially extends into the groove 2207. When the material is injected into the first mold 4, part of the raw material will enter the groove 2207. After the raw material is formed, the clamping column 2206 is stuck in the plastic toy. In the process of removing the second mold 20, the plastic toy moves to the right with the second mold 20, so that the plastic toy can be separated from the first mold 4. After that, the hydraulic rod 2202 contracts, the clamping column 2206 moves and leaves the plastic toy, and then the clamping column 2206 will squeeze the fourth piston 2203 to move.

[0040] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, an oil storage cylinder 2209 is fixed on the other side of the second mold 20, and the oil storage cylinder 2209 is connected to the second oil storage tank 2204 through a second connecting pipe 2208. A fifth piston 2210 is slidingly connected in the oil storage cylinder 2209, and a push block 2211 is fixed on one side of the fifth piston 2210. The push block 2211 is slidingly connected in the groove 2207. The second connecting pipe 2208 serves to connect the oil storage cylinder 2209 and the second oil storage tank 2204. When the fourth piston 2203 is squeezed and moved by the clamping column 2206, the fifth piston 2210 will move to the left under the action of oil pressure, thereby driving the push block 2211 to move left, which is convenient for automatic demolding.

[0041] The use method and advantages of the present invention: The working process of the plastic toy injection mold that is easy to dissipate heat is as follows:

[0042] like Figures 1 to 10As shown: Hydraulic oil is stored in the oil storage box 1701 and the second oil storage tank 2204. First, the injection valve 6 and the injection pipe 16 are connected to the external liquid supply pipe, and the outlet valve 7 is connected to the outlet pipe. The injection valve 21 is opened to inject material between the first mold 4 and the second mold 20. The injection valve 6 is opened to inject coolant into the cooling channel 5. At the same time, coolant is introduced into the injection pipe 16. The coolant flows into the cooling channel 5 through the moving channel 14 and the docking pipe 15. The coolant cools the raw material in the process of flowing through the cooling channel 5 and the branch channel 8, thereby accelerating the molding speed of the raw material. The incomplete gear 1704 rotates and meshes with the circular gear 1709 When connected together, the circular gear 1709 rotates with the rotation of the incomplete gear 1704, thereby driving the sleeve 1707 to rotate, the screw 1711, the second piston 1712 and the third piston 1714 move up, thereby squeezing out the hydraulic oil, the first piston 11, the slider 12, the moving channel 14 and the docking pipe 15 move down as a whole, so as to use the coolant in the injection pipe 16 to strengthen the cooling of the lower half of the raw material, so that the upper and lower parts of the raw material can be evenly cooled. After the docking pipe 15 corresponds to the connecting pipe 9, the coolant in the moving channel 14 will enter the branch channel 8, so that the bottom of the raw material can also be evenly cooled. When the incomplete gear 1704 rotates, the second piston 1712 and the third piston 1714 move up, thereby squeezing out the hydraulic oil, and the first piston 11, the slider 12, the moving channel 14 and the docking pipe 15 move down as a whole, thereby using the coolant in the injection pipe 16 to strengthen the cooling of the lower half of the raw material, so that the upper and lower parts of the raw material can be evenly cooled. 1712 and the third piston 1714 move downward, and the first piston 11, the slider 12, the movable channel 14 and the docking pipe 15 move upward as a whole. Since the right inner wall of the oil storage box 1701 is tilted inward, when the second piston 1712 and the third piston 1714 move upward, the downward movement speed of the slider 12 gradually decreases, which is convenient for extending the cooling time of the lower layer and making the cooling effect uniform. When the second piston 1712 and the third piston 1714 move downward, the upward movement speed of the slider 12 gradually increases. The incomplete gear 1704 has a section of vacant teeth. Before the slider 12 moves down to the bottom and moves up, the teeth on the incomplete gear 1704 disengage from the circular gear 1709, and the lock plate 1705 is stuck between the two ridges 1710, so that Lock the circular gear 1709, and the incomplete gear 1704 rotates forward and reverse until the raw material is completely formed. During injection, part of the raw material enters the groove 2207. After the raw material is formed, the clamping column 2206 is stuck in the plastic toy, and the movable plate 19 and the second mold 20 move right as a whole, thereby withdrawing the plastic toy from the first mold 4. Then the hydraulic rod 2202 contracts, and the clamping column 2206 moves and leaves the plastic toy. When the clamping column 2206 squeezes the fourth piston 2203 to move, the fifth piston 2210 and the push block 2211 move left, thereby pushing the plastic toy down from the second mold 20, facilitating automatic demoulding. Afterwards, an external cutting tool can be used to remove the scraps withdrawn from the groove 2207.

[0043] In summary, the plastic toy injection mold that is easy to dissipate heat achieves the purposes of uniform heat dissipation, variable cooling time and automatic demoulding, and meets people's usage needs.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0045] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the protection content of the present invention.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A plastic toy injection mold that is easy to dissipate heat, comprising a base (1), characterized in that: A support plate (2) is fixed to the upper end surface of the base (1), a support rod (3) is fixed to one side of the support plate (2), a first mold (4) is fixed to one end of the support rod (3), a cooling channel (5) is provided in the side wall of the first mold (4), a branch channel (8) is provided in the bottom of the first mold (4), the branch channel (8) is connected to the cooling channel (5) through a connecting pipe (9), a first oil storage tank (10) is provided in the side wall of the first mold (4), a first piston (11) is slidably connected in the first oil storage tank (10), a slider (12) is fixed to the bottom of the first piston (11), and an inner wall of the cooling channel (5) is provided. A slide groove (13) is provided, the slider (12) is slidably connected in the slide groove (13), a moving channel (14) is fixed on one side of the slider (12), a docking pipe (15) is fixed on the inner wall of the moving channel (14), an auxiliary speed-changing lifting mechanism (17) is fixed on one side of the first mold (4), the end of the auxiliary speed-changing lifting mechanism (17) is connected to the first oil storage tank (10), the auxiliary speed-changing lifting mechanism (17) includes an oil storage box (1701), and the oil storage box (1701) is fixed on one side of the cooling channel (5), a bracket (1702) is fixed on one side of the oil storage box (1701), and the bottom of the bracket (1702) is fixed. There is a forward and reverse motor (1703), the bottom of the forward and reverse motor (1703) is connected to the incomplete gear (1704), and a locking plate (1705) is fixed to the bottom of the incomplete gear (1704). The incomplete gear (1704) can rotate under the action of the forward and reverse motor (1703), and the locking plate (1705) rotates accordingly. A fixing frame (1706) is fixed to one side of the oil storage box (1701), and a sleeve (1707) is rotatably connected to the fixing frame (1706). A circular gear (1709) is fixed to the bottom of the sleeve (1707), and the circular gear (1709) is meshed and connected to one side of the incomplete gear (1704). The incomplete gear (1704) 04) rotates and meshes with the circular gear (1709), the circular gear (1709) can rotate along with the rotation of the incomplete gear (1704), thereby driving the sleeve (1707) to rotate. When the incomplete gear (1704) is not meshed with the circular gear (1709), the locking plate (1705) will lock the circular gear (1709) to prevent the circular gear (1709) from rotating. The sleeve (1707) is internally threaded with a screw rod (1711), and the screw rod (1711) passes through the bottom of the oil storage box (1701) and is connected to the second piston (1712). The third piston (1714) is slidably connected inside the second piston (1712). Since the inner wall of the oil storage box (1701) and the third piston (1714) that fits together is inclined inward, when the third piston (1714) and the second piston (1712) move upward as a whole, the third piston (1714) will be squeezed by the inner wall of the oil storage box (1701) and move to the left, the hydraulic oil squeezed out will gradually decrease, and the hydraulic pressure will gradually decrease. When the third piston (1714) and the second piston (1712) move downward as a whole, the third piston (1714) will bounce to the right, the hydraulic oil drawn in will gradually increase, and the hydraulic pressure will gradually increase. One side of the support plate (2) is connected to the movable plate (19) via an electric telescopic rod (18); a second mold (20) is fixed to one side of the movable plate (19); and an injection valve (21) and a demoulding mechanism (22) are fixed to the second mold (20).

2. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: A liquid injection valve (6) is fixed on the top of the first mold (4), and a liquid outlet valve (7) is fixed on the bottom of the first mold (4), and three of each of the liquid injection valves (6) and the liquid outlet valves (7) are provided.

3. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: A liquid injection pipe (16) is fixed on one side of the movable channel (14), and the liquid injection pipe (16) passes through the slider (12) and the bottom of the first mold (4).

4. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: Two limiting rings (1708) are fixed to the outside of the sleeve (1707), the fixing frame (1706) is located between the two limiting rings (1708), and two convex strips (1710) are fixed to the bottom of the circular gear (1709).

5. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: A limiting rod (1713) is fixed inside the second piston (1712), the limiting rod (1713) passes through the third piston (1714), and the third piston (1714) is connected to the inner wall of the second piston (1712) via a first compression spring (1715).

6. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: An air hole (1716) is provided at the bottom of the oil storage box (1701), and the oil storage box (1701) is connected to the first oil storage tank (10) via a first connecting pipe (1717).

7. The plastic toy injection mold that is easy to dissipate heat according to claim 1, characterized in that: The demoulding mechanism (22) includes a hydraulic cylinder (2201), and the hydraulic cylinder (2201) is fixed in the side wall of the second mold (20). A hydraulic rod (2202) is provided on the inner side of the hydraulic cylinder (2201). A second oil storage tank (2204) is provided in the side wall of the second mold (20), and a fourth piston (2203) is slidably connected in the second oil storage tank (2204). The fourth piston (2203) is connected to the inner top of the second oil storage tank (2204) through a second compression spring (2205), and the second compression spring (2205) is wrapped around the outer side of the hydraulic rod (2202). The hydraulic rod (2202) passes through the fourth piston (2203) and is connected to the clamping column (2206). A groove (2207) is provided on one side of the second mold (20), and the clamping column (2206) extends into the groove (2207).

8. The plastic toy injection mold that is easy to dissipate heat according to claim 7, characterized in that: An oil storage cylinder (2209) is fixed on the other side of the second mold (20), and the oil storage cylinder (2209) is connected to the second oil storage tank (2204) through a second connecting pipe (2208). A fifth piston (2210) is slidably connected in the oil storage cylinder (2209), and a push block (2211) is fixed on one side of the fifth piston (2210), and the push block (2211) is slidably connected in the groove (2207).

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