Toy injection mold with cooling function

Abstract

The utility model relates to an injection mold, in particular to a toy injection mold with a cooling function. The technical problem to be solved by the utility model is to provide a water-cooled toy injection mold with a cooling function. The toy injection mold with the cooling function comprises a lower mold, an upper mold, an air cylinder and the like, one side of the lower die is fixedly connected with an air cylinder, the lower die and the upper die are connected through the air cylinders, the air cylinders are symmetrically distributed on the two sides of the lower die and the two sides of the upper die, the air cylinders on the two sides drive the upper die to stably move upwards or descend through telescopic rods, and separation and attachment between the upper die and the lower die are achieved. Water is pumped into the water storage tank through the water pump, when the water in the water storage tank flows down from the water flow channel, the flowing water carries out heat of the lower mold and the upper mold through heat transfer, the lower mold and the upper mold serve as cooling media, plastic cooling and curing are accelerated, and the time for waiting for slow molding of the plastic is effectively shortened.

Description

Technical Field

[0001] The utility model relates to an injection mold, in particular to a toy injection mold with a cooling function. Background Art

[0002] Plastic molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products a complete configuration and precise size. Among them, toy injection molds are tools used to make toys. They are usually made of metal materials such as steel or aluminum alloy. The injection mold injects the molten plastic material into the mold through the injection molding machine. After cooling and solidification, the mold is removed to obtain a molded toy.

[0003] The patent with patent announcement number CN210139562U discloses a plastic toy injection molding mold, including a base, a mold body is arranged at the midpoint of the top of the base, the bottom of the mold body is in contact with the top of the base, the left and right sides of the mold body are fixedly connected with support blocks, the top of the support block is fixedly connected with a limiting block, the left and right sides of the top of the base are opened with through openings, and a limiting device is arranged inside the through openings, a driving device is fixedly connected at the midpoint of the bottom of the inner wall of the base, support legs are fixedly connected on the left and right sides of the bottom of the base, a positioning block is fixedly connected at the midpoint of the top of the base, a positioning groove is opened at the midpoint of the bottom of the mold body, and the top of the positioning block passes through the positioning groove and extends to the inside of it and contacts with its inner wall.

[0004] The above patent design is a plastic toy injection molding mold, and the process of disassembling the mold body is simple to operate, which can reduce the labor intensity of workers and can be used for normal use of the injection molding mold. However, when the mold body shapes the melted plastic therein, the molten plastic liquid will release heat, causing the temperature of the mold body to rise, and the plastic takes a long time to cool and solidify, which directly leads to a slow molding speed of plastic toys, thereby affecting the toy production efficiency. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In order to overcome the shortcoming that the existing toy injection mold cannot provide cooling, the technical problem to be solved by the utility model is to provide a water-cooled toy injection mold with a cooling function.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a toy injection mold with a cooling function, including a lower mold, an upper mold, a cylinder, a water flow channel, a refrigeration water tank, a water pump, a water pipe, an injection port and a water storage tank. A cylinder is fixedly connected to one side of the lower mold, and the lower mold and the upper mold are connected by the cylinder. The cylinders are symmetrically distributed on both sides of the lower mold and the upper mold. The cylinders on both sides drive the upper mold to move up or down smoothly through telescopic rods to achieve separation and bonding between the upper mold and the lower mold. A plurality of water flow channels for water supply and circulation are vertically opened in the internal circumference of the upper mold and the lower mold. When the upper mold and the lower mold are bonded, each water flow channel is The channels will be connected respectively. The middle part of the upper mold is connected to an injection port that vertically penetrates the mold groove. The water flow channel of the upper mold is connected to the water tank. The injection port and the water tank are separated from each other. The bottom of the lower mold is connected to a refrigeration water tank with a larger space. A water pump for pumping water is provided inside the refrigeration water tank. The water pump is connected to a water pipe upward. The water pipe is divided into two sections, the upper section of the water pipe is divided into multiple branches, and is connected to the water tank through the branches. The water pipe of the lower section is connected to the water pump. The water pipes of the upper and lower sections are connected by port contact, and follow the separation and bonding of the upper and lower molds. The water pipes of the upper and lower sections will also be opened and connected synchronously.

[0009] Preferably, a sealing sleeve for sealing is provided between the upper and lower sections of the water pipes. The sealing sleeve is fixed to the port of one of the water pipes. When the upper and lower sections of the water pipes are disconnected, the sealing sleeve is separated. When the upper and lower sections of the water pipes are connected, a sealed connection is achieved to prevent leakage of water pumped out by the water pump.

[0010] Preferably, a sealing tube is provided at the port at the lower end of the water flow channel of the upper mold. After the upper mold and the lower mold are fitted together, the sealing tube of the upper mold will be inserted into the water flow channel of the lower mold, so that the water flow channel between the upper mold and the lower mold is sealed and connected. The sealing tube can prevent water from flowing out from the gap between the upper mold and the lower mold, thereby affecting the normal film molding operation.

[0011] Preferably, sealing pads are provided at the edges of the contact surfaces of the lower mold and the upper mold, so that the lower mold and the upper mold can be sealed and fitted to protect the complete molding of the plastic inside.

[0012] Preferably, a baffle is provided at the upper end of the injection port, which will limit the melted thermoplastic so that it can be correctly introduced into the injection port to prevent overflow when the thermoplastic is injected, thereby preventing a safety accident.

[0013] Preferably, it also includes a bracket and a refrigerator. The left and right sides of the refrigeration water tank are fixedly connected with brackets, and the brackets are installed with refrigerators for accelerating water cooling, avoiding the trouble of manually taking out the cooling water for cooling.

[0014] Preferably, a plurality of cooling fins are provided on the outside of the refrigerator, and the cooling fins are closely attached to the refrigerator to accelerate the cooling of the cooling water by the refrigerator.

[0015] Preferably, the refrigerator is detachably installed, so that a failed refrigerator can be quickly replaced to maintain its refrigeration effectiveness.

[0016] Preferably, an air outlet is also included. An air outlet is provided between the injection port and the mold body of the upper mold, and the air outlet connects the mold groove of the upper mold with the outside air.

[0017] Preferably, the air outlet and the injection port are separated from each other and are close to each other, forming together a vertical ventilated injection channel.

[0018] (3) Beneficial effects

[0019] 1. The utility model uses a water pump to pump water into a water tank. When the water in the water tank flows down from the water flow channel, the flowing water will bring out the heat of the lower mold and the upper mold through heat transfer. The lower mold and the upper mold are used as cooling media to accelerate the cooling and solidification of the plastic, effectively shortening the time required to wait for its slow shaping.

[0020] 2. The utility model can increase the cooling area of ​​the mold where the water flows in contact with the water by setting a plurality of water flow channels to connect the water storage tank and the refrigeration water tank up and down, and then cooperate with the refrigerator to circulate and cool the water after absorbing heat. Under the action of the water pump, the cooling water circulates in the mold, and applies continuous and cyclic cooling to the melted plastic, thereby maintaining the high efficiency of cooling when the plastic is being molded.

[0021] 3. The utility model can also design the injection port and the air outlet. When the heated and melted plastic is injected into the molding cavity by the injection molding machine under high pressure, the air squeezed out by the plastic can be discharged from the relatively sealed mold through the air outlet. By balancing the air pressure inside and outside the mold, it is ensured that the hot plastic is quantitatively injected into the molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the injection port, water pump, water storage tank and water flow channel of the utility model.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the refrigeration water tank, water pipe and air outlet of the utility model.

[0025] The markings in the accompanying drawings are: 1-lower mold, 2-upper mold, 3-injection port, 4-refrigeration water tank, 5-cylinder, 6-bracket, 7-refrigerator, 8-water pump, 9-water pipe, 10-water storage tank, 11-water flow channel, 12-air outlet. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Embodiment: A toy injection mold with cooling function, such as Figure 1 and Figure 2 As shown, it includes a lower mold 1, an upper mold 2, a cylinder 5, a water flow channel 11, a cooling water tank 4, a water pump 8, a water pipe 9, an injection port 3 and a water storage tank 10. The cylinder 5 is fixedly connected to one side of the lower mold 1. The lower mold 1 and the upper mold 2 are connected through the cylinder 5. The cylinders 5 are symmetrically distributed on both sides of the lower mold 1 and the upper mold 2. The cylinders 5 on both sides drive the upper mold 2 to move up or down smoothly through the telescopic rod to achieve the separation and bonding between the upper mold and the lower mold 1. A plurality of water flow channels 11 for water supply and circulation are vertically opened in the internal circumference of the upper mold 2 and the lower mold 1. When the upper mold 2 and the lower mold 1 are bonded, the water flow channels 11 therein will be connected to each other respectively, and the middle of the upper mold 2 It is connected to an injection port 3 which vertically passes through the mold groove, and the water flow channel 11 of the upper mold 2 is connected to a water storage tank 10. The injection port 3 and the water storage tank 10 are separated from each other. The bottom of the lower mold 1 is connected to a refrigeration water tank 4 with a larger space. A water pump 8 for pumping water is arranged inside the refrigeration water tank 4. The water pump 8 is connected to a water pipe 9 upward. The water pipe 9 is divided into two sections, the upper section of the water pipe 9 is further divided into multiple branch pipes, and is connected to the water storage tank 10 through the branch pipes. The water pipe 9 of the lower section is connected to the water pump 8. The upper and lower sections of the water pipe 9 are connected by port contact, and following the separation and bonding of the upper mold 2 and the lower mold 1, the upper and lower sections of the water pipe 9 will also be opened and connected synchronously.

[0028] like Figure 2 As shown, a sealing sleeve for sealing is provided between the upper and lower sections of the water pipe 9. The sealing sleeve is fixed at the end of one section of the water pipe 9. When the upper and lower sections of the water pipe 9 are disconnected, they are separated. When the upper and lower sections of the water pipe 9 are connected, a sealed connection is achieved to prevent leakage of the water pumped out by the water pump 8.

[0029] like Figure 3 As shown, a sealing tube is provided at the port at the lower end of the water flow channel 11 of the upper mold 2. After the upper mold 2 and the lower mold 1 are fitted together, the sealing tube of the upper mold 2 will be inserted into the water flow channel 11 of the lower mold 1, so that the water flow channel 11 between the upper mold 2 and the lower mold 1 is sealed and connected. The sealing tube can prevent water from flowing out from the gap between the upper mold 2 and the lower mold 1, thereby affecting the normal plastic film operation. The edges of the contact surfaces of the lower mold 1 and the upper mold 2 are provided with sealing gaskets, and the lower mold 1 and the upper mold 2 can be sealed and fitted to protect the complete molding of the plastic inside.

[0030] like Figure 1 As shown, a baffle is provided at the upper end of the injection port 3, which will limit the melted thermoplastic so that it can be correctly introduced into the injection port 3 to prevent overflow when the thermoplastic is injected, thereby preventing a safety accident.

[0031] like Figure 1As shown, it also includes a bracket 6 and a refrigerator 7. The brackets 6 are fixedly connected to the left and right sides of the cooling water tank 4. The refrigerator 7 for accelerating water cooling is installed on the brackets 6 to avoid the trouble of manually taking out the cooling water for cooling.

[0032] like Figure 1 As shown, a plurality of cooling fins are provided on the outside of the refrigerator 7, which are closely attached to the refrigerator 7 to accelerate the cooling of the cooling water by the refrigerator 7. The refrigerator 7 can be installed detachably, and a failed refrigerator 7 can be quickly replaced to maintain its refrigeration effectiveness.

[0033] like Figure 2 As shown, an air outlet 12 is also included. An air outlet 12 is provided between the injection port 3 and the mold body of the upper mold 2. The air outlet 12 connects the mold groove of the upper mold 2 with the outside air. The air outlet 12 and the injection port 3 are separated and tightly attached to each other, and together form a vertical ventilated injection pipeline.

[0034] When it is necessary to perform toy injection molding, the present mold can be used. Before molding the film, a certain amount of cooling water is first injected into the refrigeration water tank 4, and then the cylinders 5 on both sides are started. The cylinders 5 drive the upper mold 2 downward and steadily close to the upper end of the lower mold 1 through the telescopic rod, and the upper mold 2 and the lower mold 1 can be tightly sealed and fitted under the continuous action of the cylinders 5. In the process of continuous fitting of the upper mold 2 and the lower mold 1, the sealing tube at the end of each water flow channel 11 of the upper mold 2 will be inserted into the lower mold 1, and will be tightly fitted with the water flow channel 11 corresponding to the lower mold 1, so that the seal of the water flow channel 11 between the upper mold 2 and the lower mold 1 is connected. At the same time, in the process of continuous descent of the upper mold 2, the upper mold 2 will also drive the upper and lower sections of the water pipes 9 to be synchronously spliced ​​and connected together, and the sealing sleeve is tightly sleeved. The sealing fit between the two sections of water pipe 9 is realized below. When the water pipe 9 and the water flow channel 11 are respectively sealed and connected, the user can inject the melted plastic liquid with a higher temperature from the injection port 3. The hot plastic liquid flows down into the predetermined toy shaping groove after passing through the injection port 3. At this time, in the process of the hot plastic liquid flowing down the toy shaping groove, the air in the toy shaping groove can be squeezed to the air outlet 12, and finally discharged to the outside through the air outlet 12 upward, so that the air pressure inside and outside the mold is balanced, so that the hot plastic liquid can smoothly flow into the shaping groove of the mold, and under the restriction of the upper mold 2 and the lower mold 1, the hot plastic liquid in the toy shaping groove is cooled and shaped. In the process of the hot plastic liquid being fitted and shaped by the upper mold 2 and the lower mold 1, the high temperature of the hot plastic liquid will be transferred to the upper mold 2 and the lower mold 1, causing the temperature of the upper mold 2 and the lower mold 1 to rise. At this time, the water pump 8 is started, and the water pump 8 will pump the cooling water in the refrigeration water tank 4 into the water pipe 9 by pressure. After the water is pumped into the water pipe 9, it will come to the water storage tank 10, and after a certain amount of water is injected, the water in the water storage tank 10 will flow down from the multiple openings at the bottom thereof and enter the multiple corresponding water flow channels 11. Since the water flow channels 11 are distributed throughout the mold bodies of the lower mold 1 and the upper mold 2, the water flowing through the water flow channels 11 will take out the heat in the upper mold 2 and the lower mold 1, so that the upper mold 2 and the lower mold 1 can be cooled after losing the heat. At this time, the upper mold 2 and the lower mold 1 will continue to transfer the heat in the hot plastic liquid, thereby accelerating its cooling speed and effectively shortening the toy shaping time. At this time, the water with heat will flow back to the refrigeration water tank 4 through the water flow channel 11, causing the water in the refrigeration water tank 4 to start to heat up. At this time, the refrigerator 7 outside the refrigeration water tank 4 will cool it, thereby accelerating the rapid cooling of the high-temperature water in the refrigeration water tank 4 after absorbing heat. After the cooling water is cooled to a suitable temperature, it will continue to be pumped upward into the water pipe 9 for circulation under the action of the water pump 8, and finally come to the water storage tank 10 again and flow down from the water flow channel 11, realizing the cyclic cooling of the mold, reducing the temperature of the mold itself, and accelerating the cooling and shaping of the toy. Finally, after turning off the water pump 8, the cylinder 5 drives the lower mold 1 and the upper mold 2 to separate, and the shaped toy can be taken out, achieving the effect of rapid shaping of the toy.

[0035] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A toy injection mold with cooling function, characterized in that: The invention comprises a lower mold (1), an upper mold (2), a cylinder (5), a water flow channel (11), a cooling water tank (4), a water pump (8), a water pipe (9), an injection port (3) and a water storage tank (10). The cylinder (5) is fixedly connected to one side of the lower mold (1). The lower mold (1) and the upper mold (2) are connected via the cylinder (5). The cylinders (5) are symmetrically distributed on both sides of the lower mold (1) and the upper mold (2). The cylinders (5) on both sides drive the upper mold (2) to move upward or downward steadily via telescopic rods. A plurality of water flow channels (11) for water supply and circulation are vertically opened in the inner circumference of the upper mold (2) and the lower mold (1). Each of the water flow channels (11) is divided into The upper mold (2) is connected to an injection port (3) which is vertically connected to the mold groove in the middle part, the water flow channel (11) of the upper mold (2) is connected to the water storage tank (10), the injection port (3) and the water storage tank (10) are separated from each other, the bottom of the lower mold (1) is connected to a refrigeration water tank (4), a water pump (8) is arranged inside the refrigeration water tank (4), the water pump (8) is connected to a water pipe (9) upward, the water pipe (9) is divided into two sections, the water pipe (9) of the upper section is further divided into a plurality of branch pipes, and the branch pipes are connected to the water storage tank (10), the water pipe (9) of the lower section is connected to the water pump (8), and the water pipes (9) of the upper and lower sections are contact-connected through ports.

2. A toy injection mold with cooling function according to claim 1, characterized in that: A sealing sleeve is provided between the upper and lower sections of the water pipe (9), and the sealing sleeve is fixed to the end of one section of the water pipe (9).

3. A toy injection mold with cooling function according to claim 2, characterized in that: A sealing tube is provided at the port at the lower end of the water flow channel (11) of the upper mold (2). After the upper mold (2) and the lower mold (1) are attached, the sealing tube of the upper mold (2) is inserted into the water flow channel (11) of the lower mold (1), so that the water flow channel (11) between the upper mold (2) and the lower mold (1) is sealed and connected.

4. A toy injection mold with cooling function according to claim 3, characterized in that: Sealing pads are provided at the edges of the contact surfaces of the lower mold (1) and the upper mold (2), so that the lower mold (1) and the upper mold (2) can be sealed and fitted.

5. A toy injection mold with cooling function according to claim 4, characterized in that: A baffle is provided at the upper end of the injection port (3) to limit the hot plasticization after melting.

6. A toy injection mold with cooling function according to claim 5, characterized in that: It also includes a bracket (6) and a refrigerator (7), and the bracket (6) is fixedly connected to the left and right sides of the refrigeration water tank (4).

7. A toy injection mold with cooling function according to claim 6, characterized in that: A plurality of cooling fins are arranged on the outside of the refrigerator (7), and the cooling fins are closely attached to the refrigerator (7).

8. The toy injection mold with cooling function according to claim 7, characterized in that: The refrigerator (7) is detachably installed, and a failed refrigerator (7) can be quickly replaced.

9. The toy injection mold with cooling function according to claim 8, characterized in that: It also includes an air outlet (12), and a section of the air outlet (12) is provided between the injection port (3) and the mold body of the upper mold (2).

10. The toy injection mold with cooling function according to claim 9, characterized in that: The air outlet (12) and the injection port (3) are separated from each other and closely attached to each other, and together form a vertical ventilated injection pipe.

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