Double colored plastic injection machine with cooling structure

Abstract

The utility model discloses a double-colored injection molding machine with a cooling structure, which comprises a double-colored injection molding machine mechanism, a cooling assembly and a double-colored mold assembly, the cooling assembly comprises a channel pipe, the channel pipe is arranged in a cooling channel inside the double-colored mold assembly, one side of the double-colored mold assembly is provided with a concave opening, and the concave opening is communicated with the cooling channel of the double-colored mold assembly. A butt joint hole is formed in one end of the interior of the channel pipe, a threaded pipe is rotatably connected to the interior of the butt joint hole, a circulation hole is formed in the threaded pipe, a steel pipe is connected to one end of the threaded pipe in a welded mode, and through the channel pipe, the threaded pipe, the steel pipe and other components, a first sealing ring, a second sealing ring and an outer side sealing ring, the threaded pipe and the steel pipe are connected in a welded mode. By means of the threaded pipe and the butt joint hole in the channel pipe, the threaded pipe is effectively screwed down in the butt joint hole, leakage of cooling liquid is reduced, and the first sealing ring, the second sealing ring and the outer sealing ring effectively prevent leakage of cooling media.

Description

Technical Field

[0001] This utility model relates to the field of two-color injection molding machine technology, specifically a two-color injection molding machine with a cooling structure. Background Technology

[0002] A two-color injection molding machine is a machine capable of simultaneously injecting two colors of plastic. By precisely mixing and injecting different colored plastic materials on the same machine, it produces plastic products with various color combinations. Applications include automotive interior parts such as dashboards, door panels, and center consoles; multi-color and multi-material designs; and mobile phone cases, TV remotes, and computer keyboards. The working principle of a two-color injection molding machine is based on two independent injection systems, each responsible for one color of plastic. During the injection process, these two systems work alternately, injecting different colored plastics into the same or different locations in the mold, thus forming two-color or multi-color products.

[0003] Currently, two-color injection molding machines work by selecting suitable plastic materials and placing them into the two barrels of the machine. Through heating and screw rotation, the plastic granules are transformed into a molten state. The molten plastic is then injected into the mold cavity under high pressure, where it cools and solidifies to form the desired shape. However, the cooling structure of a two-color injection molding machine is installed inside the mold, with dedicated cooling channels for circulating coolant (usually water or oil) to quickly reduce the mold temperature and accelerate the cooling process of the product. However, if the cooling pipes are installed at the cooling channel opening of the two-color mold, and the joints are not tightened properly or the sealing tape is not wrapped properly, coolant leakage may occur. This leakage may lead to uneven temperature distribution in the mold, thus affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a two-color injection molding machine with a cooling structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a two-color injection molding machine with a cooling structure, comprising a two-color injection molding machine mechanism, a cooling component, and a two-color mold assembly, characterized in that: the cooling component includes: a channel pipe, the channel pipe being installed inside the cooling channel of the two-color mold assembly, a recessed opening on one side of the two-color mold assembly, a mating hole being provided at one end of the channel pipe, a threaded pipe being rotatably connected inside the mating hole, a flow hole being provided inside the threaded pipe, and a steel pipe being welded to one end of the threaded pipe.

[0006] As a further preferred embodiment of this technical solution, a second sealing ring is fitted onto the outer side of the channel tube. The second sealing ring is installed at the cooling channel opening of the two-color mold assembly and is also installed inside the recess.

[0007] As a further preferred embodiment of this technical solution, a first sealing ring is installed at one end of the second sealing ring, and the first sealing ring is fitted onto the connection position between the threaded pipe and the mating hole.

[0008] As a further preferred embodiment of this technical solution, a fixing ring plate is installed on the outer side of the steel pipe. The fixing ring plate is bolted to one end of the two-color mold assembly, and an outer sealing ring is fitted onto the fixing ring plate.

[0009] As a further preferred embodiment of this technical solution, a flexible hose is installed at one end of the steel pipe, and a first sealing connection sleeve is fitted at the connection between the flexible hose and the steel pipe.

[0010] As a further preferred embodiment of this technical solution, one end of the hose is installed at one end of the cooling connection port, and a second sealing connection sleeve is fitted on the outside of the hose.

[0011] As a further preferred embodiment of this technical solution, the cooling connection port is connected through the interior of the fixed support plate, and the fixed support plate is fixed to one end of the two-color injection molding machine mechanism by a fixing bolt.

[0012] This utility model provides a two-color injection molding machine with a cooling structure, which has the following beneficial effects:

[0013] (1) This utility model uses components such as tunnel pipe, threaded pipe, steel pipe, and first sealing ring, second sealing ring and outer sealing ring, and the threaded pipe and the tunnel pipe are connected through the internal docking hole to effectively tighten the threaded pipe and reduce coolant leakage. The first sealing ring, second sealing ring and outer sealing ring effectively prevent the coolant from leaking.

[0014] (2) This utility model effectively prevents leakage of cooling liquid during transmission through the first sealing connecting sleeve and the second sealing connecting sleeve, and can maintain good sealing performance even under high pressure. The fixed support plate is firmly connected to the two-color injection molding machine through the fixing bolt, providing stable support for the cooling hose and reducing the risk of loose connection due to vibration or movement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the two-color mold assembly of this utility model;

[0017] Figure 3This is a schematic diagram of the disassembled structure of the cooling component of this utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the cooling component of this utility model;

[0019] Figure 5 This is a schematic diagram of the steel pipe and threaded pipe structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the channel pipe and the second sealing ring structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the cooling water pipe support and fixing assembly structure of this utility model;

[0022] In the diagram: 100, Two-color injection molding machine mechanism; 200, Cooling component; 201, Recessed opening; 202, Hose; 203, First sealing connection sleeve; 204, Steel pipe; 205, Fixing ring plate; 206, Outer sealing ring; 207, First sealing ring; 208, Second sealing ring; 209, Channel pipe; 210, Threaded pipe; 211, Flow hole; 212, Butt hole; 300, Two-color mold assembly; 400, Cooling water pipe support and fixing assembly; 401, Cooling connection port; 402, Fixing bolt; 403, Second sealing connection sleeve; 404, Fixing support plate. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1-6As shown, in this embodiment, a two-color injection molding machine with a cooling structure includes a two-color injection molding machine mechanism 100, a cooling assembly 200, and a two-color mold assembly 300. The cooling assembly 200 includes a channel pipe 209, which is installed inside the cooling channel of the two-color mold assembly 300. A recess 201 is provided on one side of the two-color mold assembly 300. A docking hole 212 is provided at one end of the channel pipe 209. A threaded pipe 210 is rotatably connected inside the docking hole 212. A flow hole 21 is provided inside the threaded pipe 210. 1. One end of the threaded pipe 210 is welded to a steel pipe 204. A second sealing ring 208 is fitted onto the outside of the channel pipe 209. The second sealing ring 208 is installed at the cooling channel opening of the two-color mold assembly 300 and is also installed inside the recess 201. A first sealing ring 207 is installed at one end of the second sealing ring 208. The first sealing ring 207 is fitted onto the connection position between the threaded pipe 210 and the mating hole 212. A fixing ring plate 205 is installed on the outside of the steel pipe 204 to fix the position of the steel pipe 204. To ensure the stability of the cooling structure, the fixing ring plate 205 is bolted to one end of the two-color mold assembly 300. An outer sealing ring 206 is fitted onto the fixing ring plate 205, further enhancing the sealing effect. In actual use, the two-color mold assembly 300 is a mold used to mold two-color products. It has internal cooling channels to help quickly cool the plastic parts. The cooling assembly 200 includes components such as a channel pipe 209, a threaded pipe 210, and a steel pipe 204. These components together constitute a cooling system. The cooling structure includes a channel tube 209 installed in the cooling channel inside the mold to guide the flow of cooling medium (such as water or oil) and remove heat from the mold and plastic parts. A threaded tube 210 is rotatably connected to a mating hole 212. The threads inside the mating hole 212 are twisted and fixed to the threads outside the threaded tube 210. The cooling medium can enter the channel tube 209 through the flow hole 211. The first sealing ring 207 and the second sealing ring 208 are made of rubber material to ensure the sealing of the cooling structure and prevent the cooling medium from leaking.

[0025] Through components such as the channel pipe 209, threaded pipe 210, and steel pipe 204, as well as the first sealing ring 207, the second sealing ring 208, and the outer sealing ring 206, the threaded pipe 210 is effectively tightened into the inner mating hole 212 of the channel pipe 209, thereby reducing coolant leakage. The first sealing ring 207, the second sealing ring 208, and the outer sealing ring 206 effectively prevent the leakage of cooling medium.

[0026] like Figure 1-3 , Figure 7As shown, a flexible hose 202 is installed at one end of the steel pipe 204. A first sealing sleeve 203 is fitted at the connection between the flexible hose 202 and the steel pipe 204. One end of the flexible hose 202 is installed at one end of the cooling connection port 401, and a second sealing sleeve 403 is fitted on its outer side. The cooling connection port 401 is connected through the inside of the fixed support plate 404. The fixed support plate 404 is fixed to one end of the two-color injection molding machine mechanism 100 by fixing bolts 402. In actual use, the connection between the steel pipe 204 and the flexible hose 202 is sealed by the first sealing sleeve 203 to prevent leakage of cooling liquid. The other end of the flexible hose 202 is connected to the cooling connection port 401 and sealed by the second sealing sleeve 403 to ensure that the cooling medium does not leak during transmission. The fixed support plate 404 is firmly connected to one end of the two-color injection molding machine mechanism 100 by fixing bolts 402 to ensure the stability of the entire cooling hose 202.

[0027] The first sealing sleeve 203 and the second sealing sleeve 403 effectively prevent the leakage of coolant during transmission and maintain good sealing performance even under high pressure. The fixed support plate 404 is firmly connected to the two-color injection molding machine by the fixing bolt 402, providing stable support for the cooling hose 202 and reducing the risk of loosening due to vibration or movement.

[0028] This utility model provides a two-color injection molding machine with a cooling structure. The specific working principle is as follows: A two-color injection molding machine is typically equipped with two independent injection systems, each with its own barrel and screw. These two systems can be controlled independently, including parameters such as plasticizing, injection volume, and injection speed. During production, the molten material from the two injection systems is injected sequentially or simultaneously into the corresponding positions of the mold. The mold also includes a rotating or sliding mechanism for moving or rotating the mold between the first and second injections to achieve color switching. Two-color injection molding machines come in various models, and can be divided into different specifications based on parameters such as clamping force, injection volume, and injection speed. For example, the DKM double-color injection machine is a common model. The cooling system is an important component of the two-color injection molding machine, used to quickly reduce the mold temperature during injection, allowing the plastic to solidify rapidly. The cooling system typically includes components such as cooling channels, coolers, and water pumps. During injection, cooling water circulates through the cooling channels inside the mold, carrying away the heat generated by the mold. The two-color mold assembly 300 is a mold used for molding two-color products. It has internal cooling channels to help quickly cool the plastic parts. The cooling assembly 200 includes components such as a channel pipe 209, a threaded pipe 210, and a steel pipe 204. These components together form a cooling structure. The channel pipe 209 is installed in the cooling channels inside the mold to guide the flow of cooling medium (such as water or oil) and remove heat from the mold and plastic parts. The threaded pipe 210 is rotatably connected to a mating hole 212. The threads inside the mating hole 212 are twisted and fixed to the threads outside the threaded pipe 210. The coolant can enter the channel pipe 209 through the flow hole 211. The first sealing ring 207 and the second sealing ring 208 are made of rubber material to ensure the sealing of the cooling structure and prevent the coolant from leaking. The first sealing connecting sleeve 203 and the second sealing connecting sleeve 403 effectively prevent the coolant from leaking during the transmission process and maintain good sealing performance even under high pressure. The fixed support plate 404 is firmly connected to the two-color injection molding machine by the fixing bolt 402, providing stable support for the cooling hose 202 and reducing the risk of loosening due to vibration or movement.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-color injection molding machine with a cooling structure, comprising a two-color injection molding machine mechanism (100), a cooling assembly (200), and a two-color mold assembly (300), characterized in that: The cooling assembly (200) includes: a channel pipe (209), which is installed in the cooling channel inside the two-color mold assembly (300). A recess (201) is provided on one side of the two-color mold assembly (300). A docking hole (212) is provided at one end of the channel pipe (209). A threaded pipe (210) is rotatably connected inside the docking hole (212). A flow hole (211) is provided inside the threaded pipe (210). A steel pipe (204) is welded to one end of the threaded pipe (210).

2. A two-color injection molding machine with a cooling structure according to claim 1, characterized in that: The outer side of the channel tube (209) is fitted with a second sealing ring (208), which is installed at the cooling channel opening of the two-color mold assembly (300) and is also installed inside the recess (201).

3. A two-color injection molding machine with a cooling structure according to claim 2, characterized in that: One end of the second sealing ring (208) is fitted with a first sealing ring (207), which is sleeved on the connection position between the threaded pipe (210) and the mating hole (212).

4. A two-color injection molding machine with a cooling structure according to claim 1, characterized in that: A fixing ring plate (205) is installed on the outside of the steel pipe (204). The fixing ring plate (205) is bolted to one end of the two-color mold assembly (300). An outer sealing ring (206) is fitted onto the fixing ring plate (205).

5. A two-color injection molding machine with a cooling structure according to claim 4, characterized in that: A flexible hose (202) is installed at one end of the steel pipe (204), and a first sealing connection sleeve (203) is sleeved at the connection between the flexible hose (202) and the steel pipe (204).

6. A two-color injection molding machine with a cooling structure according to claim 5, characterized in that: One end of the hose (202) is installed at one end of the cooling connection port (401), and a second sealing connection sleeve (403) is sleeved on the outside.

7. A two-color injection molding machine with a cooling structure according to claim 6, characterized in that: The cooling connection port (401) is connected through the interior of the fixed support plate (404), and the fixed support plate (404) is fixed to one end of the two-color injection molding machine mechanism (100) by a fixing bolt (402).

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