Multi-runner injection mold based on multiple composite materials

Abstract

The utility model provides a multi-runner injection mold based on multiple composite materials, which belongs to the field of mold equipment and comprises an upper mounting plate, a lower mounting plate, a cooling mechanism and a heat insulation plate. An upper mold is fixedly mounted at the bottom of the upper mounting plate, a lower mold is mounted at the top of the lower mounting plate, and a main pouring gate is formed in the upper mold; according to the utility model, a spiral cooling channel is formed in an upper mold, a concentric-square-shaped cooling channel is formed in a lower mold, the spiral cooling channel is arranged around a main pouring gate and two auxiliary pouring gates, and the concentric-square-shaped cooling channel is formed in the bottom of a pouring cavity; when a water pump conveys cooling water in a cold water tank into the spiral cooling channel and the concentric-square-shaped cooling channel, cold water flows to take away heat transmitted by the main pouring channel, the two auxiliary pouring channels and the pouring cavity, so that an injection molding part and a mold are rapidly cooled, the injection molding part is conveniently and rapidly taken down, and the injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of mold equipment, in particular to a multi-sprue injection mold based on multi-composite materials. Background Art

[0002] Injection molds are tools for producing plastic products. They inject heated and molten materials into mold cavities by high pressure, and obtain molded products after cooling and solidification. However, due to the increasingly complex structures of existing plastic products, ordinary gates and runners can no longer fill the mold cavities well. Once the mold cavity cannot be filled with heated and molten materials, the quality of the molded plastic products is difficult to guarantee. Among them, a single-gate multi-runner injection mold with application number "CN201520811860.3" is disclosed. The utility model discloses a single-gate multi-runner injection mold. By adding a nozzle, a main runner, two side runners and two branch runners, the heated and molten materials can have multiple ways to enter the mold cavity, ensuring that the heated and molten materials can fill the mold cavity, thereby ensuring the quality of the molded plastic products. However, the injection mold still has certain deficiencies during use: the surface temperature of the molded part after injection molding is very high. Since the mold does not have a cooling structure inside, the molded part needs to wait for cooling before being removed, which affects the efficiency of injection molding. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-gating injection mold based on multi-composite materials to solve the problem that the surface temperature of the molded part after injection molding is very high, and since the mold does not have a cooling structure inside, the molded part needs to wait for cooling before being removed, which affects the efficiency of injection molding.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-sprue injection mold based on multi-composite materials, comprising an upper mounting plate, a lower mounting plate, a cooling mechanism and a heat insulation plate;

[0005] Wherein: an upper mold is fixedly installed at the bottom of the upper mounting plate, a lower mold is installed on the top of the lower mounting plate, a main runner is opened inside the upper mold, two sides of the main runner are connected to two auxiliary runners, and a casting cavity is opened on the surface of the lower mold;

[0006] A cooling mechanism, wherein the cooling mechanism comprises a spiral cooling channel opened inside the upper mold, a meander cooling channel opened inside the lower mold, the spiral cooling channel is arranged around the main runner and two auxiliary runners, the meander cooling channel is distributed at the bottom of the casting cavity, one end of the spiral cooling channel and the meander cooling channel are both equipped with a water inlet joint, and the other end of the spiral cooling channel and the meander cooling channel are both equipped with a water outlet joint;

[0007] The heat insulation board is installed on the surface of the lower mold and is distributed on both sides of the casting cavity.

[0008] As a preferred solution of the utility model: a cold water tank is provided on one side of the upper mounting plate, a water pump is installed on the top of the cold water tank, a water supply pipe is installed at the water outlet of the water pump, and the water supply pipe is connected to one end of two water inlet joints.

[0009] As a preferred solution of the utility model: one end of the two water outlet joints is connected to a return pipe, and one end of the return pipe is connected to a water collection tank.

[0010] As a preferred solution of the utility model: the water supply pipe and the water return pipe are corrugated hoses.

[0011] As a preferred solution of the utility model: a support plate is installed in the middle of the surface of the lower mounting plate, and a plurality of ejector rods are fixedly installed on the surface of the support plate, and the ejector rods are inserted and connected inside the casting cavity.

[0012] As a preferred solution of the utility model: the ejector rod and the meander-shaped cooling channel are staggered.

[0013] As a preferred solution of the utility model: a positioning hole is opened at the bottom of the upper mold, and positioning columns are installed around the surface of the lower mold, and the positioning columns are inserted in the positioning hole.

[0014] As a preferred solution of the utility model: an injection gate is opened in the middle of the upper mounting plate, and the injection gate is connected to the main runner.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) A spiral cooling channel is opened inside the upper mold, and a meander cooling channel is opened inside the lower mold. The spiral cooling channel is arranged around the main runner and two auxiliary runners, and the meander cooling channel is opened at the bottom of the casting cavity. When the water pump delivers cooling water from the cold water tank to the spiral cooling channel and the meander cooling channel, the cold water flows away the heat transferred from the main runner, the two auxiliary runners and the casting cavity, so that the injection molded parts and the mold are cooled quickly, so that the injection molded parts can be quickly removed, thereby improving the injection molding efficiency;

[0017] (2) The surface of the lower mold is installed with a heat insulation board, which is distributed on both sides of the casting cavity. When the upper mold and the lower mold are closed, the heat insulation board is located in the middle of the two, which can avoid the heat transfer between the upper mold and the lower mold and reduce the heat loss of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the pouring cavity structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the upper mold of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower mold of the utility model;

[0022] Figure 5 This is a schematic diagram of the cooling mechanism structure of the utility model.

[0023] In the figure: 1. upper mounting plate; 101. upper mold; 102. main runner; 103. auxiliary runner; 2. lower mounting plate; 201. lower mold; 202. casting cavity; 3. cooling mechanism; 31. spiral cooling channel; 32. round cooling channel; 33. water inlet joint; 34. water outlet joint; 35. cold water tank; 36. water pump; 37. water supply pipe; 38. water return pipe; 39. water collecting tank; 4. heat insulation board; 5. support plate; 6. ejector rod; 7. positioning hole; 8. positioning column; 9. injection gate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 , a multi-gating injection mold based on multi-composite materials, comprising: an upper mounting plate 1, a lower mounting plate 2, a cooling mechanism 3 and a heat insulation plate 4; the upper mounting plate 1 and the lower mounting plate 2, an upper mold 101 is fixedly mounted on the bottom of the upper mounting plate 1, a lower mold 201 is mounted on the top of the lower mounting plate 2, a main runner 102 is opened inside the upper mold 101, both sides of the main runner 102 are connected to two auxiliary runners 103, and a casting cavity 202 is opened on the surface of the lower mold 201;

[0026] During specific use: a main runner 102 is opened inside the upper mold 101, and two auxiliary runners 103 are connected on both sides of the main runner 102. When the casting material enters the main runner 102 and flows, the injection molded material is dispersed and enters the auxiliary runners 103 on both sides, so that casting is performed through multiple runners to avoid material shortage after injection molding.

[0027] See also Figure 3 , Figure 4 , Figure 5, cooling mechanism 3, the cooling mechanism 3 includes a spiral cooling channel 31 opened in the upper mold 101, a meander cooling channel 32 is opened in the lower mold 201, the spiral cooling channel 31 is arranged around the main runner 102 and the two auxiliary runners 103, the meander cooling channel 32 is distributed at the bottom of the casting cavity 202, one end of the spiral cooling channel 31 and the meander cooling channel 32 are both equipped with a water inlet joint 33, the other end of the spiral cooling channel 31 and the meander cooling channel 32 are both equipped with a water outlet joint 34, a cold water tank 35 is provided on one side of the upper mounting plate 1, a water pump 36 is installed on the top of the cold water tank 35, a water supply pipe 37 is installed at the water outlet end of the water pump 36, the water supply pipe 37 is connected to one end of the two water inlet joints 33, one end of the two water outlet joints 34 is connected to a return pipe 38, and one end of the return pipe 38 is connected to a water collecting tank 39.

[0028] During specific use: a spiral cooling channel 31 is opened inside the upper mold 101, and a meandering cooling channel 32 is opened inside the lower mold 201. When the water pump 36 is working, the cooling water in the cold water tank 35 is transported to the water supply pipe 37. The cooling water enters the water inlet joint 33 through the water supply pipe 37, so that the water flows into the spiral cooling channel 31 and the meandering cooling channel 32. The flowing water takes away the heat inside the upper mold 101 and the lower mold 201, so that the injection molded parts are quickly cooled. The water flows through the water outlet joint 34 to the return pipe 38, and is finally collected by the water collecting tank 39 connected to one end of the return pipe 38.

[0029] See also Figure 4 , the insulation board 4 is installed on the surface of the lower mold 201, and the insulation board 4 is distributed on both sides of the casting cavity 202.

[0030] During specific use: the surface of the lower mold 201 is installed with an insulation board 4, and the insulation board 4 is distributed on both sides of the casting cavity 202. When the upper mold 101 and the lower mold 201 are closed, the insulation board 4 is in the middle position between the two, which can avoid the heat transfer between the upper mold 101 and the lower mold 201 and reduce the heat loss of the mold.

[0031] See also Figure 4 The water supply pipe 37 and the water return pipe 38 are corrugated hoses.

[0032] During specific use: the water supply pipe 37 and the water return pipe 38 adopt a retractable corrugated pipe, so that the water supply pipe 37 and the water return pipe 38 can meet the displacement variables of the water inlet joint 33 and the water outlet joint 34 when the mold is opened.

[0033] See also Figure 1 A support plate 5 is installed in the middle of the surface of the lower mounting plate 2 , and a plurality of ejector rods 6 are fixedly installed on the surface of the support plate 5 , and the ejector rods 6 are inserted and connected inside the casting cavity 202 .

[0034] During specific use: a support plate 5 is installed in the middle of the surface of the lower mounting plate 2, and a push rod 6 installed on the surface of the support plate 5 is inserted into the casting cavity 202. When the injection molding is completed, the support plate 5 drives the push rod 6 to eject the injection molded part from the casting cavity 202, which is convenient for material removal.

[0035] See also Figure 1 , Figure 4 The top rod 6 and the meander cooling channel 32 are staggered.

[0036] During specific use, the installation position of the push rod 6 and the opening position of the meander-shaped cooling channel 32 are staggered to prevent the push rod 6 from passing through the meander-shaped cooling channel 32 and causing water leakage.

[0037] See also Figure 2 A positioning hole 7 is formed at the bottom of the upper mold 101 , and positioning columns 8 are installed around the surface of the lower mold 201 , and the positioning columns 8 are inserted into the positioning holes 7 .

[0038] During specific use: the positioning hole 7 opened at the bottom of the upper mold 101 corresponds to the positioning column 8 installed on the surface of the lower mold 201. When the mold is closed, the positioning column 8 is inserted into the positioning hole 7, so that the mold remains stable during the injection molding process.

[0039] See also Figure 3 An injection gate 9 is opened in the middle of the upper mounting plate 1 , and the injection gate 9 is connected to the main runner 102 .

[0040] When in use, an injection gate 9 connected to the main runner 102 is provided in the middle of the upper mounting plate 1 , so that the composite material flows into the main runner 102 through the injection gate 9 for injection molding.

[0041] A spiral cooling channel 31 is provided inside the upper mold 101, and a meander cooling channel 32 is provided inside the lower mold 201. The spiral cooling channel 31 is arranged around the main runner 102 and the two auxiliary runners 103, and the meander cooling channel 32 is provided at the bottom of the casting cavity 202. When the water pump 36 transports the cooling water in the cold water tank 35 to the spiral cooling channel 31 and the meander cooling channel 32, the cold water flows away the heat transferred from the main runner 102, the two auxiliary runners 103 and the casting cavity 202, so that the injection molded parts and the mold are cooled quickly, thereby facilitating the rapid removal of the injection molded parts and improving the injection molding efficiency.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field 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 shall be included in the protection scope of the present invention.

Claims

1. A multi-gating injection mold based on multi-composite materials, characterized in that: include: An upper mounting plate (1) and a lower mounting plate (2), wherein an upper mold (101) is fixedly mounted on the bottom of the upper mounting plate (1), and a lower mold (201) is mounted on the top of the lower mounting plate (2); a main runner (102) is provided inside the upper mold (101), and two sides of the main runner (102) are connected to two auxiliary runners (103); and a casting cavity (202) is provided on the surface of the lower mold (201); A cooling mechanism (3), the cooling mechanism (3) comprising a spiral cooling channel (31) provided inside the upper mold (101), a meander cooling channel (32) provided inside the lower mold (201), the spiral cooling channel (31) being arranged around the main runner (102) and the two auxiliary runners (103), the meander cooling channel (32) being distributed at the bottom of the casting cavity (202), one end of each of the spiral cooling channel (31) and the meander cooling channel (32) being provided with a water inlet joint (33), and the other end of each of the spiral cooling channel (31) and the meander cooling channel (32) being provided with a water outlet joint (34); A heat insulation board (4), wherein the heat insulation board (4) is installed on the surface of the lower mold (201), and the heat insulation board (4) is distributed on both sides of the casting cavity (202).

2. The multi-gating injection mold based on multi-composite materials according to claim 1, characterized in that: A cold water tank (35) is provided on one side of the upper mounting plate (1), a water pump (36) is installed on the top of the cold water tank (35), a water supply pipe (37) is installed at the water outlet end of the water pump (36), and the water supply pipe (37) is connected to one end of the two water inlet joints (33).

3. The multi-gating injection mold based on multi-composite materials according to claim 1, characterized in that: One end of the two water outlet joints (34) is connected to a water return pipe (38), and one end of the water return pipe (38) is connected to a water collection tank (39).

4. The multi-gating injection mold based on multi-composite materials according to claim 2, characterized in that: The water supply pipe (37) and the water return pipe (38) are corrugated hoses.

5. The multi-gating injection mold based on multi-composite materials according to claim 1, characterized in that: A support plate (5) is installed in the middle of the surface of the lower installation plate (2), and a plurality of push rods (6) are fixedly installed on the surface of the support plate (5), and the push rods (6) are inserted and connected inside the casting cavity (202).

6. The multi-gating injection mold based on multi-composite materials according to claim 5, characterized in that: The push rod (6) and the meander-shaped cooling channel (32) are arranged in a staggered manner.

7. The multi-gating injection mold based on multi-composite materials according to claim 1, characterized in that: A positioning hole (7) is provided at the bottom of the upper mold (101), and positioning columns (8) are installed around the surface of the lower mold (201), and the positioning columns (8) are inserted into the positioning hole (7).

8. The multi-gating injection mold based on multi-composite materials according to claim 1, characterized in that: An injection gate (9) is provided in the middle of the upper mounting plate (1), and the injection gate (9) is connected to the main runner (102).

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