Cooling device for injection molding machine

Abstract

The utility model discloses a cooling device for an injection molding machine. The cooling device comprises a charging barrel and a cooling assembly, a plurality of cooling ring grooves are formed in the charging barrel, the cooling assembly is composed of an isolation piece and a flow guide piece, the isolation piece is installed on the flow guide piece, the flow guide piece is installed on the charging barrel, a first through hole is formed in the middle of the isolation piece, an installation part matched with the first through hole is arranged on the flow guide piece, symmetrical drainage holes are formed in the installation part, and balls are arranged in the drainage holes. And an annular groove is formed in the first through hole. According to the cooling device for the injection molding machine, the sectional type cooling assembly is adopted, the part needing to be cooled can be rapidly cooled according to actual requirements, the temperature of the part not needing to be cooled can be kept, the part does not need to be cooled to the temperature of the part needing to be cooled, and the internal temperature is kept. And meanwhile, the cooling assemblies which are not needed can be detached in sections, so that the charging barrel of the injection molding machine can be better cooled.

Description

Technical Field

[0001] The utility model relates to injection molding technology, in particular to a cooling device for an injection molding machine. Background Art

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the primary molding equipment used to create various shapes of plastic products from thermoplastics or thermosetting plastics using plastic molding molds. They are available in vertical, horizontal, and all-electric models. They heat the plastic and apply high pressure to the molten plastic, forcing it to eject and fill the mold cavity. Injection molding machines typically consist of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system.

[0003] During the production process, switching to different plastic products is very frequent. Whenever different plastic products are produced, the machine must be shut down to clean the plastic particles. However, due to improper shutdown methods, the molten plastic particles in the barrel will agglomerate after cooling. The use of an integrated cooling structure, due to the internal pins of the barrel and the discharge port, makes it difficult to remove the agglomerated plastic inside. The existing standard design, the cooling structure on the plasticizing unit cannot be disassembled and is directly mounted on the barrel. When the plastic particles agglomerate at the discharge port, the agglomerated plastic material cannot be removed. The only way to deal with the agglomerated plastic material at the discharge port is to disassemble the plasticizing unit as a whole. Utility Model Content

[0004] In order to solve the above-mentioned defects in the prior art, the utility model proposes a cooling device for an injection molding machine.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A cooling device for an injection molding machine, characterized by comprising:

[0007] The barrel is provided with multiple cooling ring grooves.

[0008] Multiple cooling components are arranged on the barrel, and the cooling components are composed of an isolation piece and a guide piece. The isolation piece is installed on the guide piece, and the guide piece is installed on the barrel. The isolation piece is provided with a liquid inlet pipe and a liquid outlet pipe. A first through hole is formed in the middle of the isolation piece, and the guide piece is provided with a mounting portion that cooperates with the first through hole. The mounting portion is provided with symmetrical drainage holes, and balls are provided in the drainage holes. An annular groove is provided in the first through hole, and the annular groove is connected to the liquid inlet pipe. A part of the ball is provided in the annular groove, and a second through hole is provided in the middle of the guide piece, and the barrel is provided in the second through hole.

[0009] In the cooling device for an injection molding machine of the present invention, an internal thread is provided on the inner wall of the first through hole, and an external thread matching the internal thread is provided on the mounting portion.

[0010] In the cooling device for an injection molding machine of the present invention, the cross section of the drainage hole is frustum-shaped, and the diameter of the drainage hole at one end facing the second through hole is larger, and the diameter of the drainage hole at one end away from the second through hole is smaller.

[0011] In the cooling device for an injection molding machine of the present invention, the diameter of one end of the drainage hole away from the second through hole is smaller than the diameter of the ball.

[0012] In the cooling device for an injection molding machine of the present invention, the diameter of the cooling ring groove is larger than the diameter of the ball.

[0013] In the cooling device for the injection molding machine of the present invention, a plurality of strip grooves are provided on the outer wall of the barrel, the strip grooves are communicated with the cooling ring grooves, and the strip grooves are located in the second through hole.

[0014] The present invention provides a cooling device for an injection molding machine with the following advantages: The cooling device utilizes segmented cooling components, which can rapidly cool the portion requiring cooling according to actual needs, while maintaining the temperature of the portion not requiring cooling, preventing the portion from cooling to the temperature of the portion requiring cooling, thereby preserving the internal temperature. Furthermore, unneeded cooling components can be removed in segments, enabling better cooling of the injection molding machine barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a cooling device for an injection molding machine according to the present invention;

[0016] Figure 2 for Figure 1 A top view of

[0017] Figure 3 for Figure 2 The cross-sectional view at AA in the figure;

[0018] Figure 4 for Figure 1 Schematic diagram of the barrel structure;

[0019] Figure 5 for Figure 1 A cross-sectional view of the cooling assembly in FIG.

[0020] Figure 6 for Figure 3 A partial enlarged view of point B in FIG. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] like Figures 1 to 6 As shown, the cooling device for an injection molding machine of the present invention includes a barrel 1 and a cooling assembly 2. The barrel 1 is provided with multiple cooling annular grooves 3, with sliding portions 4 formed between the cooling annular grooves 3. The outer wall of the barrel 1 is provided with multiple strip grooves 5, which communicate with the cooling annular grooves 3 and are located within a second through hole 6. The strip grooves 5 are provided on the sliding portion 4.

[0023] The cooling assembly 2 is provided on the barrel 1 and has multiple locations. The cooling assembly 2 consists of an insulating member 7 and a flow guide 8. The insulating member 7 is mounted on the flow guide 8, which is mounted on the barrel 1. The insulating member 7 is provided with an inlet pipe 9 and a discharge pipe 10. The inlet pipe 9 and the discharge pipe 10 are symmetrically arranged and are both arranged at the ball 12. A liquid inlet hole 11 is formed in the middle of the liquid inlet pipe 9, and a liquid discharge hole 13 is formed in the middle of the liquid discharge pipe 10. They are connected to external injection equipment to inject coolant.

[0024] A first through hole 14 is formed in the middle of the isolation member 7 , and a mounting portion 15 is provided on the flow guide member 8 to cooperate with the first through hole 14 . An internal thread 16 is provided on the inner wall of the first through hole 14 , and an external thread 17 is provided on the mounting portion 15 to cooperate with the internal thread 16 .

[0025] Symmetrical drainage holes 18 are provided on the mounting portion 15, and a ball 12 is provided in the drainage hole 18. An annular groove 19 is provided in the first through hole 14, and the annular groove 19 is connected to the liquid inlet pipe 9. A part of the ball 12 is arranged in the annular groove 19. A second through hole 6 is provided in the middle of the guide member 8, and the barrel 1 is arranged in the second through hole 6.

[0026] The cross section of the drainage hole 18 is in the shape of a frustum, and the diameter of the drainage hole 18 at one end facing the second through hole 6 is larger, while the diameter of the drainage hole 18 at the other end away from the second through hole 6 is smaller.

[0027] The diameter of the drainage hole 18 at the end away from the second through hole 6 is smaller than the diameter of the ball 12, so that the ball 12 can completely block the drainage hole 18. The diameter of the cooling ring groove 3 is larger than the diameter of the ball 12, which can keep the ball 12 in the cooling ring groove 3 and allow the coolant to flow in the cooling ring groove 3.

[0028] A high temperature resistant sealing ring can be provided in the second through hole 6 to achieve a waterproof sealing effect. At the same time, the boiling point of the coolant needs to be higher than the temperature in the barrel 1.

[0029] A fixing hole 20 is further provided on the barrel 1 , and a positioning pin 21 is provided in the fixing hole 20 for limiting the position of the cooling assembly 2 .

[0030] When the entire barrel 1 needs to be cooled, the entire cooling assembly 2 can be pushed so that the cooling annular groove 3 is connected to the annular groove 19 and coolant is injected. When segmented cooling is required, individual cooling assemblies 2 can be pushed so that the guide piece can slide on the barrel 1, thereby driving the balls 12 to move and enter the cooling annular groove 3, connecting the cooling annular groove 3 with the annular groove 19, thereby connecting the liquid inlet pipe 9 and the liquid outlet pipe 10, and cooling the barrel 1 with the coolant.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements 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 cooling device for an injection molding machine, characterized in that: include: The barrel is provided with multiple cooling ring grooves. Multiple cooling components are arranged on the barrel, and the cooling components are composed of an isolation piece and a guide piece. The isolation piece is installed on the guide piece, and the guide piece is installed on the barrel. The isolation piece is provided with a liquid inlet pipe and a liquid outlet pipe. A first through hole is formed in the middle of the isolation piece, and the guide piece is provided with a mounting portion that cooperates with the first through hole. The mounting portion is provided with symmetrical drainage holes, and balls are provided in the drainage holes. An annular groove is provided in the first through hole, and the annular groove is connected to the liquid inlet pipe. A part of the ball is provided in the annular groove, and a second through hole is provided in the middle of the guide piece, and the barrel is provided in the second through hole.

2. The cooling device for an injection molding machine according to claim 1, characterized in that: An internal thread is provided on the inner wall of the first through hole, and an external thread matching the internal thread is provided on the mounting portion.

3. The cooling device for an injection molding machine according to claim 1, characterized in that: The cross section of the drainage hole is in a frustum shape, and the diameter of the drainage hole at one end facing the second through hole is larger, and the diameter of the drainage hole at one end away from the second through hole is smaller.

4. The cooling device for an injection molding machine according to claim 3, characterized in that: The diameter of one end of the drainage hole away from the second through hole is smaller than the diameter of the ball.

5. The cooling device for an injection molding machine according to claim 1, characterized in that: The diameter of the cooling ring groove is larger than the diameter of the ball.

6. The cooling device for an injection molding machine according to claim 1, characterized in that: A plurality of strip grooves are provided on the outer wall of the barrel, the strip grooves are communicated with the cooling ring groove, and the strip grooves are located in the second through hole.

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