Exhaust system for injection mold

Abstract

The utility model relates to the technical field of mold processing, and discloses an exhaust system for an injection mold, which comprises a base, the top of the base is fixedly connected with a lower injection mold, the top of the lower injection mold is provided with an upper injection mold, and the top of the upper injection mold is fixedly connected with an injection pipe. And the top of the injection molding pipe is slidably connected with a sealing assembly used for sealing the upper injection molding mold, exhaust pipes are fixedly connected to the inner walls of the two sides of the top of the upper injection molding mold, sealing rings are slidably connected to the interiors of the exhaust pipes, first springs are arranged in the exhaust pipes, and pistons are fixedly connected to one sides of the sealing rings. According to the utility model, the air pressure can be automatically adjusted, the air pressure can be effectively adjusted, air accumulation or bubbles on the surface of a molded product can be prevented, the quality and the consistency of the molded product can be improved, errors and deviations possibly caused by manual operation can be reduced, and the stability and the reliability of production can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to an exhaust system for an injection mold. Background Art

[0002] The exhaust system of the injection mold is to remove the gas in the mold and ensure the quality of the molded product. Common designs include vents, vents and exhaust needles. These structures can effectively exhaust the bubbles and gas generated during the injection molding process to avoid surface defects and internal bubbles in the parts. Optimized exhaust system design can improve production efficiency and product quality, especially in the manufacture of injection molded parts with high requirements for precision and surface quality.

[0003] In the prior art, some exhaust systems for injection molds ensure that gas is discharged timely and effectively from the inside of the mold during the injection molding process by designing reasonable vent grooves, vent holes, exhaust needles or exhaust valves. However, in the specific use process, if the internal air pressure cannot be automatically adjusted, the surface quality of the molded parts may be unstable or there may be bubbles or defects. Especially in the production of injection molded parts with high precision requirements, these defects may significantly affect the quality of the final product. Therefore, an exhaust system for injection molds is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an exhaust system for an injection mold, aiming to improve the problem in the prior art that the internal air pressure cannot be automatically adjusted.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An exhaust system for an injection mold comprises a base, the top of the base is fixedly connected to a lower injection mold, the top of the lower injection mold is provided with an upper injection mold, the top of the upper injection mold is fixedly connected to an injection tube, the top of the injection tube is slidably connected to a sealing assembly for sealing the upper injection mold, the inner walls on both sides of the top of the upper injection mold are fixedly connected to an exhaust pipe, the interior of the exhaust pipe is slidably connected to a sealing ring, a spring is provided inside the exhaust pipe, a piston is fixedly connected to one side of the sealing ring, the left and right sides of the bottom of the upper injection mold are fixedly connected to connecting blocks, the inner walls on both sides of the top of the base are fixedly connected to sealing gaskets, the connecting blocks are engaged with the sealing gaskets, a fan is fixedly connected to the left side of the top of the base, an outlet pipe is fixedly connected to the left side of the fan, an air valve is fixedly connected to the top of the outlet pipe, a filter plate is provided inside the air valve, and buckle assemblies for fixing the filter plate are fixedly connected to the front and rear ends of the left side of the base;

[0007] As a further description of the above technical solution:

[0008] The sealing assembly comprises an upper cover, the bottom inner wall of the upper cover is slidably connected to the outside of the injection tube, a plurality of fixing columns are fixedly connected to the top inner wall of the upper cover, a sliding plate is slidably connected inside the fixing columns, a sliding rod is fixedly connected to the bottom of the sliding plate, a second spring is arranged inside the fixing columns, and a second sealing pad is fixedly connected to the top of the sliding rod;

[0009] As a further description of the above technical solution:

[0010] Each of the buckle components includes a shell, the bottom of the shell is fixedly connected to the top of the left side of the base, the left side of the shell is slidably connected to a push rod, one end of the push rod is fixedly connected to a slide plate, the outside of the push rod is rotatably connected to a rotating rod, one end of the rotating rod is rotatably connected to a clamping rod, a spring three is arranged inside the shell, and a bottom plate is fixedly connected to an inner wall of one side of the shell;

[0011] As a further description of the above technical solution:

[0012] The left and right sides of the top of the base are fixedly connected with handles, and the left side of the bottom of the air outlet pipe is fixedly connected with a support column;

[0013] As a further description of the above technical solution:

[0014] The outside of the sliding rod is slidably connected to the bottom inner wall of the fixed column, and the bottom of the second sealing gasket is in contact with the top of the injection tube;

[0015] As a further description of the above technical solution:

[0016] The right side of the lower injection mold is fixedly connected with an input pipe, and the filter plate is engaged with the clamping rod;

[0017] As a further description of the above technical solution:

[0018] One end of the second spring is fixedly connected to an inner wall of one side of the fixing column, and the other end of the second spring is fixedly connected to one side of the sliding plate;

[0019] As a further description of the above technical solution:

[0020] The bottom of the slide plate is slidably connected to the bottom inner wall of the shell, and the outside of the clamping rod is slidably connected to the inner wall of one side of the shell.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, when the air pressure inside the cavity is too high, the gas will be discharged through the exhaust pipe. As the gas is discharged, the air pressure will continue to decrease. Then, under the action of spring 1, the piston will be pushed to block the opening, thereby realizing automatic adjustment of the air pressure. The air pressure can be effectively adjusted to prevent gas accumulation or bubbles on the surface of the molded product, improve the quality and consistency of the molded product, reduce the errors and deviations that may be introduced by human operation, improve the stability and reliability of production, and reduce the generation rate of defective products.

[0023] 2. In the utility model, the push rod is pushed, the push rod drives the rotating rod to rotate, the rotating rod drives the clamping rod to move, so that the clamping rod slides out from the inside of the filter plate, thereby realizing the disassembly of the filter plate, making it more convenient to clean and maintain the filter plate, so as to ensure the smooth progress of the next production process and reduce production interruptions caused by exhaust problems during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of an exhaust system for an injection mold proposed by the utility model;

[0025] Figure 2 A schematic diagram of the structure of a spring 1 of an exhaust system for an injection mold proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a sliding rod of an exhaust system for an injection mold proposed by the utility model;

[0027] Figure 4 The utility model is a schematic structural diagram of a rotating rod of an exhaust system for an injection mold.

[0028] Legend:

[0029] 1. Base; 2. Lower injection mold; 3. Upper injection mold; 4. Exhaust pipe; 5. Sealing ring; 6. Piston; 7. Spring 1; 8. Connecting block; 9. Sealing gasket 1; 10. Upper cover; 11. Fixed column; 12. Sliding plate; 13. Sliding rod; 14. Spring 2; 15. Sealing gasket 2; 16. Injection pipe; 17. Fan; 18. Exhaust pipe; 19. Air valve; 20. Filter plate; 21. Housing; 22. Push rod; 23. Slide plate; 24. Rotating rod; 25. Clamp rod; 26. Spring 3; 27. Bottom plate; 28. Handle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an exhaust system for an injection mold, comprising a base 1, a lower injection mold 2 is fixedly connected to the top of the base 1, the base 1 serves as an overall supporting platform, firmly fixes the lower injection mold 2, and provides basic support and stability for the mold system, an upper injection mold 3 is arranged on the top of the lower injection mold 2, and the double-layer injection mold design is realized through this structure, which is suitable for the injection molding processing requirements of complex products, an injection tube 16 is fixedly connected to the top of the upper injection mold 3, and a sealing component for sealing the upper injection mold 3 is slidably connected to the top of the injection tube 16, which effectively prevents leakage of plastic materials during the injection molding process, and the sealing component comprises an upper cover 10, the bottom inner wall of the upper cover 10 is slidably connected to the outside of the injection tube 16, and the upper cover The top inner wall of 10 is fixedly connected with a plurality of fixed columns 11, the interior of the fixed column 11 is slidably connected with a sliding plate 12, the bottom of the sliding plate 12 is fixedly connected with a sliding rod 13, a spring 2 14 is arranged inside the fixed column 11, a sealing gasket 2 15 is fixedly connected to the top of the sliding rod 13, the sealing gasket 2 15 is an important part of the sealing component, which ensures the sealing of the injection tube 16 during operation to prevent leakage and contamination of the plastic material, the inner walls on both sides of the top of the upper injection mold 3 are fixedly connected with an exhaust pipe 4, the interior of the exhaust pipe 4 is slidably connected with a sealing ring 5, the sealing ring 5 prevents gas leakage, a spring 1 7 is arranged inside the exhaust pipe 4, the function of the spring 1 7 is to provide power for realizing autonomous regulation of air pressure, a piston 6 is fixedly connected to one side of the sealing ring 5,

[0032] Reference Figure 1 , Figure 3 and Figure 4, the left and right sides of the bottom of the upper injection mold 3 are fixedly connected with connecting blocks 8, the inner walls of the top two sides of the base 1 are fixedly connected with sealing gaskets 9, the connecting blocks 8 are engaged with the sealing gaskets 9, and the left side of the top of the base 1 is fixedly connected with a fan 17. The fan 17 is square and is used to cool part of the structure in the injection mold process to maintain temperature control and plastic molding quality. The left side of the fan 17 is fixedly connected with an outlet pipe 18. The outlet pipe 18 usually has a tubular shape and is used to discharge the cooled air from around the mold to promote the efficiency and stability of the entire injection molding process. The top of the outlet pipe 18 is fixedly connected with an air valve 19, and a filter plate 20 is arranged inside the air valve 19. The front and rear ends of the left side of the base 1 are fixedly connected with a snap assembly for fixing the filter plate 20. The snap assembly is used to fix the filter plate 20. The snap assembly usually adopts a shape that is easy to operate and fix to ensure that the filter plate 20 is stable and easy to replace during use.

[0033] Each snap assembly includes a shell 21, which is designed to protect the internal mechanical parts from the influence of the external environment. The bottom of the shell 21 is fixedly connected to the top left side of the base 1. The left side of the shell 21 is slidably connected to a push rod 22. The push rod 22 is used to push or pull the internal parts when needed. One end of the push rod 22 is fixedly connected to a slide plate 23. This design enables the push rod 22 to effectively transmit thrust or pulling force to ensure the normal operation of the internal mechanical parts. The outside of the push rod 22 is rotatably connected to a rotating rod 24, and one end of the rotating rod 24 is rotatably connected to a clamping rod 25. A spring three 26 is arranged inside the shell 21, and a bottom plate 27 is fixedly connected to the inner wall of one side of the shell 21. The function of the bottom plate 27 is to enhance the stability and durability of the overall structure and ensure the overall reliability and durability of long-term use.

[0034] Reference Figure 2 - Figure 4 , the left and right sides of the top of the base 1 are fixedly connected with handles 28, which are designed to facilitate the operator to carry and move the mold, improve the convenience and safety of operation, and are made of sturdy and durable materials to ensure that they are not easily damaged or deformed during use. The left side of the bottom of the outlet pipe 18 is fixedly connected with a support column, and the outer sliding rod 13 is slidably connected to the bottom inner wall of the fixed column 11. The bottom of the sealing gasket 15 fits the top of the injection tube 16. The shape and material design of the injection tube 16 are designed to ensure the sealing between the injection tube 16 and other connecting parts to prevent leakage of liquid or gas;

[0035] An input pipe is fixedly connected to the right side of the lower injection mold 2, the filter plate 20 is engaged with the clamping rod 25, one end of the spring 214 is fixedly connected to the inner wall of one side of the fixed column 11, and the spring 214 provides a restoring force or a supporting force through this connection method, which is used to maintain the position of the fixed column 11 or adjust its moving range to ensure the stability and reliability of the mold. The other end of the spring 214 is fixedly connected to one side of the sliding plate 12, the bottom of the slide plate 23 is slidably connected to the bottom inner wall of the outer shell 21, and the outside of the clamping rod 25 is slidably connected to the inner wall of one side of the outer shell 21. The clamping rod 25 is intended to control or lock the position or movement state of other mechanical parts to ensure the accuracy and reliability of the mold during operation.

[0036] Working principle: When the equipment needs to be used, the lower injection mold 2 and the upper injection mold 3 are installed, and the connection between the lower injection mold 2 and the upper injection mold 3 is sealed by setting the connecting block 8 and the sealing gasket 9. Then, the upper cover 10 is opened, and the raw material is poured into the injection cavity inside the lower injection mold 2 for injection molding. When the air pressure inside the cavity is too high, the air pressure will push the piston 6 to move upward. When the position of the piston 6 rises to the opening inside the exhaust pipe 4, the gas will be discharged through the exhaust pipe 4. As the gas is discharged, the air pressure will continue to decrease. Then, under the action of the spring 7, the piston 6 will be pushed to block the opening, thereby realizing automatic adjustment of the air pressure.

[0037] When the filter plate 20 needs to be disassembled, the push rod 22 is pushed, and the push rod 22 will drive the rotating rod 24 to rotate, and the rotating rod 24 will drive the clamping rod 25 to move, so that the clamping rod 25 slides out from the inside of the filter plate 20, thereby completing the disassembly of the filter plate 20; when the filter plate 20 needs to be installed, the push rod 22 is pushed, and the push rod 22 will drive the rotating rod 24 to rotate, and the rotating rod 24 will drive the clamping rod 25 to move, and at the same time, the push rod 22 will push the slide plate 23 to move, and the slide plate 23 will squeeze the spring three 26, and then the filter plate 20 is placed inside the exhaust pipe 18, and then the push rod 22 is released, and under the action of the spring three 26, the clamping rod 25 will be engaged with the filter plate 20.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 protection scope of the present invention.

Claims

1. An exhaust system for an injection mold, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a lower injection mold (2), the top of the lower injection mold (2) is provided with an upper injection mold (3), the top of the upper injection mold (3) is fixedly connected to an injection tube (16), the top of the injection tube (16) is slidably connected to a sealing component for sealing the upper injection mold (3), the inner walls on both sides of the top of the upper injection mold (3) are fixedly connected to an exhaust pipe (4), the interior of the exhaust pipe (4) is slidably connected to a sealing ring (5), the interior of the exhaust pipe (4) is provided with a spring (7), one side of the sealing ring (5) is fixedly connected to a piston (6), and the The bottom left and right sides of the upper injection mold (3) are fixedly connected with connection blocks (8), the inner walls on both sides of the top of the base (1) are fixedly connected with sealing gaskets (9), the connection blocks (8) are engaged with the sealing gaskets (9), the top left side of the base (1) is fixedly connected with a fan (17), the left side of the fan (17) is fixedly connected with an air outlet pipe (18), the top of the air outlet pipe (18) is fixedly connected with an air valve (19), a filter plate (20) is arranged inside the air valve (19), and the front and rear ends of the left side of the base (1) are fixedly connected with buckle assemblies for fixing the filter plate (20).

2. An exhaust system for injection mold according to claim 1, characterized in that: The sealing assembly comprises an upper cover (10), the bottom inner wall of the upper cover (10) is slidably connected to the outside of the injection molding tube (16), a plurality of fixed columns (11) are fixedly connected to the top inner wall of the upper cover (10), a sliding plate (12) is slidably connected inside the fixed columns (11), a sliding rod (13) is fixedly connected to the bottom of the sliding plate (12), a second spring (14) is arranged inside the fixed column (11), and a second sealing pad (15) is fixedly connected to the top of the sliding rod (13).

3. An exhaust system for an injection mold according to claim 1, characterized in that: Each of the buckle assemblies comprises a shell (21), the bottom of the shell (21) is fixedly connected to the top of the left side of the base (1), the left side of the shell (21) is slidably connected to a push rod (22), one end of the push rod (22) is fixedly connected to a slide plate (23), the outside of the push rod (22) is rotatably connected to a rotating rod (24), one end of the rotating rod (24) is rotatably connected to a clamping rod (25), a spring three (26) is arranged inside the shell (21), and a bottom plate (27) is fixedly connected to an inner wall of one side of the shell (21).

4. An exhaust system for injection mold according to claim 1, characterized in that: The left and right sides of the top of the base (1) are both fixedly connected with handles (28), and the left side of the bottom of the air outlet pipe (18) is fixedly connected with a support column.

5. An exhaust system for injection mold according to claim 2, characterized in that: The outside of the sliding rod (13) is slidably connected to the bottom inner wall of the fixing column (11), and the bottom of the second sealing gasket (15) is in contact with the top of the injection tube (16).

6. An exhaust system for an injection mold according to claim 3, characterized in that: An input pipe is fixedly connected to the right side of the lower injection mold (2), and the filter plate (20) is engaged with the clamping rod (25).

7. An exhaust system for injection mold according to claim 2, characterized in that: One end of the second spring (14) is fixedly connected to an inner wall of one side of the fixing column (11), and the other end of the second spring (14) is fixedly connected to one side of the sliding plate (12).

8. An exhaust system for an injection mold according to claim 3, characterized in that: The bottom of the slide plate (23) is slidably connected to the bottom inner wall of the shell (21), and the outside of the clamping rod (25) is slidably connected to the inner wall of one side of the shell (21).

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