Exhaust mechanism for precise injection mold

Abstract

The utility model provides an exhaust mechanism for a precise injection mold, which relates to the technical field of injection molds and comprises a base, a mold body is arranged at the top of the base, an exhaust pipe is fixed on one side of the mold body in a penetrating manner, a cooling box is fixed on one side of the top of the base, and one side of the cooling box is hermetically connected with one end of the exhaust pipe in a penetrating manner. A spraying plate is fixed to the end, close to the exhaust pipe, of the top of the cooling box, and a liquid medicine box is fixed to the top of the spraying plate. According to the device, an air pump is started to suck air from a first air guide pipe, air in a cooling box is pumped out, air pressure in the cooling box is small, air can automatically enter the cooling box from an exhaust pipe, water in the cooling box is pumped into a second guide pipe through a water pump, the second guide pipe makes large-area contact with the outside, and cooling is conducted through external natural cooling; and the low temperature of water in the cooling box is kept, and then the water is sprayed out from the spraying plate to cool the gas in the cooling box, so that a good cooling effect is still achieved after long-time use.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and more specifically, it relates to an exhaust mechanism for precision injection molds. Background Technology

[0002] Precision injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Molten plastic is injected into the mold cavity under high pressure by an injection molding machine, and after cooling and solidification, a molded product is obtained. By shaping molten thermoplastic raw materials through injection molds, parts of various sizes and uses can be produced. Molten thermoplastic plastic will produce a large amount of gas when it solidifies. In order to avoid the gas affecting the curing effect, the gas needs to be guided and discharged in time.

[0003] The existing publication number CN221562140U discloses an exhaust mechanism for precision injection molds. Although it has the function of cooling the gas in the connecting pipe by passing one end of the connecting pipe through the cooling box, thus preventing burns to the workers, and by connecting a purification box to one end of the connecting pipe, it is easy to turn on the exhaust fan to draw the gas into the purification box. The first activated carbon plate and the second activated carbon plate installed inside the purification box can adsorb the odor in the gas.

[0004] Based on the above, the inventors have discovered the following problems: After prolonged use, the temperature inside the cooling box will rise sharply, resulting in a decrease in the subsequent cooling effect, which is not conducive to long-term use. At the same time, although it has the effect of air purification, the use of multiple activated carbon plates for filtration can easily lead to a very slow gas flow rate, causing the extracted gas to be blocked inside the purification box. Furthermore, relying solely on activated carbon plates to purify the gas may result in some harmful substances not being purified.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a venting mechanism for precision injection molds in order to achieve a more practical purpose. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an exhaust mechanism for precision injection molds, which solves the issues that after prolonged use, the temperature inside the cooling box rises sharply, leading to a decrease in subsequent cooling effect, which is not conducive to long-term use, and that relying solely on activated carbon plates to purify the gas may result in some harmful substances not being purified.

[0007] This utility model provides a venting mechanism for precision injection molds, achieved through the following specific technical means:

[0008] An exhaust mechanism for a precision injection mold includes a base, a mold body on top of the base, an exhaust pipe fixed through one side of the mold body, a cooling box fixed to one side of the top of the base, a cooling box connected to one end of the exhaust pipe through and sealed, a spray plate fixed to the top of the cooling box near the exhaust pipe, a liquid tank fixed to the top of the spray plate, a first conduit connected to the bottom of one side of the liquid tank through and sealed, a water pump fixed to one side of the outer wall of the cooling box, a second conduit on the outer wall of the water pump, one end of the second conduit connected to the top of the spray plate, and one end of the first conduit and one end of the second conduit connected to the outer wall of the second conduit through and sealed, an air pump and a purification box fixed to the top of the base, a first air guide pipe fixed to one end of the air pump through and sealed to the cooling box, a second air guide pipe fixed to the other end of the air pump through and sealed to the purification box.

[0009] Furthermore, the middle part of the second conduit is curved, and the middle part of the second conduit is composed of multiple U-shaped tubes sealed together. The water inlet pipe of the water pump penetrates the bottom of the inner wall of the cooling box.

[0010] Furthermore, an exhaust port is provided through the end of the purification box away from the second air duct, and multiple exhaust ports are provided, which are arranged vertically and equidistantly.

[0011] Furthermore, the purification box is equipped with a locking block inside, and a filter plate is detachably installed in the middle of the locking block. There are three locking blocks and three filter plates.

[0012] Furthermore, the three filter plates, from right to left, are a first filter screen, a second filter screen, and an activated carbon plate, and the mesh density of the first filter screen is less than that of the second filter screen.

[0013] Furthermore, a sealing cover is movably fitted onto the top of the purification box, and a sealing ring is fixed around the inner wall of the sealing cover.

[0014] Furthermore, a cover plate is hinged to the other end of the top of the cooling box, a liquid guide plate is fixed to the bottom of the inner wall of the cooling box, the height of the liquid guide plate near the spray plate is greater than the height of the other end, and filter cotton is fixed to the top of the liquid guide plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this utility model, gas is drawn into the cooling box by starting the air pump through the first air guide pipe, and the gas inside the cooling box is extracted. The air pressure inside the cooling box is relatively low, and the cooling box will automatically enter the gas through the exhaust pipe. The water pump draws the water in the cooling box into the second guide pipe. The second guide pipe has a large external contact area with the outside, and the water is cooled by external natural cooling to maintain the low temperature of the water in the cooling box. The water is then sprayed out from the spray plate to cool the gas in the cooling box, thereby achieving a good cooling effect even after long-term use.

[0017] 2. In this invention, chemical reagents are added to the medicine tank, and a water pump draws water from the cooling box into the second conduit, which then sprays it out from the spray plate. At the same time, the chemical reagents in the medicine tank are slowly sprayed out, cooling and purifying the gas in the cooling box. The cooled and purified gas then enters the gas pump through the first gas guide pipe and then enters the purification box through the second gas guide pipe. The gas is filtered in layers by the first and second filter screens, and finally adsorbed by the activated carbon plate. This achieves gas purification by two methods simultaneously, resulting in better purification effect and improved gas flow rate. Attached Figure Description

[0018] Figure 1 This is a side view of the overall structure of this utility model at a 45-degree angle.

[0019] Figure 2 This is a top view of the overall structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the cooling box structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the cooling box of this utility model.

[0022] The correspondence between the component names in the diagram and the attached drawing numbers is as follows:

[0023] 1. Base; 2. Mold body; 3. Exhaust pipe; 4. Cooling box; 5. Cover plate; 6. Liquid tank; 7. First conduit; 8. Liquid guide plate; 9. Filter cotton; 10. Water pump; 11. Second conduit; 12. First air guide pipe; 13. Air pump; 14. Second air guide pipe; 15. Purification box; 16. Exhaust hole; 17. Sealing cover; 18. Clamping block; 19. Filter plate; 20. Spray plate. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; in addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 4 As shown:

[0028] This utility model provides an exhaust mechanism for precision injection molds, including a base 1, a mold body 2 on the top of the base 1, an exhaust pipe 3 through and fixed to one side of the mold body 2, a cooling box 4 fixed to one side of the top of the base 1, a cooling box 4 connected to one end of the exhaust pipe 3 through and sealed to one side of the cooling box 4, a spray plate 20 fixed to one end of the top of the cooling box 4 near the exhaust pipe 3, a liquid tank 6 fixed to the top of the spray plate 20, a first conduit 7 connected to the bottom of one side of the liquid tank 6 through and sealed to one side of the cooling box 4, a water pump 10 fixed to one side of the outer wall of the cooling box 4, a second conduit 11 on the outer wall of the water pump 10, one end of the second conduit 11 connected to the top of the spray plate 20, and one end of the first conduit 7 connected to the outer wall of one end of the second conduit 11 through and sealed to one side of the second conduit 11, an air pump 13 and a purification box 15 fixed to the top of the base 1, a first air guide pipe 12 fixed to one end of the air pump 13 through and sealed to the cooling box 4, and a second air guide pipe 14 fixed to the other end of the air pump 13 through and sealed to the purification box 15.

[0029] The second conduit 11 is curved in the middle and is composed of multiple U-shaped tubes sealed together. The water inlet pipe of the water pump 10 penetrates the bottom of the inner wall of the cooling box 4. Water in the cooling box 4 is pumped into the second conduit 11 by the water pump 10. The second conduit 11 is in contact with the outside environment on a large scale and is cooled by natural external cooling to keep the water in the cooling box 4 at a low temperature.

[0030] The purification chamber 15 has an exhaust port 16 extending through one end away from the second air duct 14. Multiple exhaust ports 16 are provided and are arranged vertically at equal intervals to discharge the gas in the purification chamber 15.

[0031] The purification box 15 has a fixed locking block 18 inside, and a filter plate 19 is detachably installed in the middle of the locking block 18. There are three locking blocks 18 and three filter plates 19. The filter plate 19 is fixed by the locking block 18, and can be quickly replaced or cleaned after long-term use.

[0032] The three filter plates 19, from right to left, are a first filter screen, a second filter screen, and an activated carbon plate. The mesh density of the first filter screen is less than that of the second filter screen. The filter is filtered in layers through the first and second filter screens, and finally adsorbed by the activated carbon plate.

[0033] The purification chamber 15 is fitted with a sealing cover 17 on its top. The inner wall of the sealing cover 17 is fixed with a sealing ring. By using the sealing cover 17 to seal the purification chamber 15, the gas inside the purification chamber 15 can be filtered by three filter plates 19 and then discharged from the exhaust port 16.

[0034] The cooling box 4 has a cover plate 5 hinged to the other end of the top. A liquid guide plate 8 is fixed to the bottom of the inner wall of the cooling box 4. The height of the liquid guide plate 8 near the spray plate 20 is greater than the height of the other end. A filter cotton 9 is fixed to the top of the liquid guide plate 8. When the filter cotton 9 needs to be replaced after long-term use, the cover plate 5 can be opened to remove the filter cotton 9 for replacement, keeping the coolant in the cooling box 4 clean.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In this invention, the air pump 13 is first activated to draw gas into the first air pipe 12, extracting the gas from the cooling box 4. Since the internal air pressure of the cooling box 4 is relatively low, the cooling box 4 automatically receives gas through the exhaust pipe 3. Simultaneously, the water pump 10 is activated and chemical reagents are added to the medicine tank 6. The water pump 10 draws water from the cooling box 4 into the second conduit 11. The second conduit 11 has a large external contact area with the outside environment, allowing for natural cooling and maintaining the low temperature of the water in the cooling box 4. The water is then sprayed out from the spray plate 20, while simultaneously spraying the chemical reagents from the medicine tank 6. The gas in the cooling box 4 is cooled and purified simultaneously. The cooled and purified gas then enters the air pump 13 through the first air guide pipe 12 and then enters the purification box 15 through the second air guide pipe 14. The gas is filtered in layers by the first and second filters and finally adsorbed by the activated carbon plate. The filter plate 19 is fixed by the clip 18. It can be quickly replaced or cleaned after long-term use. When the filter cotton 9 needs to be replaced, the cover plate 5 can be opened to remove the filter cotton 9 for replacement. Keep the coolant in the cooling box 4 clean.

[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A venting mechanism for a precision injection mold, comprising a base (1), a mold body (2) being disposed on the top of the base (1), and an venting pipe (3) being fixedly fixed through one side of the mold body (2), characterized in that: A cooling box (4) is fixed to one side of the top of the base (1). One side of the cooling box (4) is sealed to one end of the exhaust pipe (3). A spray plate (20) is fixed to the top of the cooling box (4) near the exhaust pipe (3). A medicine tank (6) is fixed to the top of the spray plate (20). A first conduit (7) is sealed to the bottom of one side of the medicine tank (6). A water pump (10) is fixed to one side of the outer wall of the cooling box (4). A second conduit (11) is provided on the outer wall of the water pump (10). One end of the pipe (11) is connected to the top of the spray plate (20), and one end of the first conduit (7) is sealed to the outer wall of one end of the second conduit (11). The top of the base (1) is fixed with an air pump (13) and a purification box (15). One end of the air pump (13) is fixed with a first air guide pipe (12), which is sealed to the cooling box (4). The other end of the air pump (13) is fixed with a second air guide pipe (14), which is sealed to the purification box (15).

2. The venting mechanism for precision injection molds as described in claim 1, characterized in that: The middle part of the second conduit (11) is curved and is composed of multiple U-shaped tubes sealed together. The water inlet pipe of the water pump (10) penetrates the bottom of the inner wall of the cooling box (4).

3. The venting mechanism for precision injection molds as described in claim 1, characterized in that: The purification box (15) has an exhaust port (16) through one end away from the second air duct (14). There are multiple exhaust ports (16), and the multiple exhaust ports (16) are arranged vertically at equal intervals.

4. The venting mechanism for precision injection molds as described in claim 1, characterized in that: The purification box (15) has a fixed locking block (18) inside, and a filter plate (19) is detachably installed in the middle of the locking block (18). There are three locking blocks (18) and three filter plates (19).

5. The venting mechanism for precision injection molds as described in claim 4, characterized in that: The three filter plates (19) are, from right to left, a first filter screen, a second filter screen and an activated carbon plate, and the mesh density of the first filter screen is less than that of the second filter screen.

6. The venting mechanism for precision injection molds as described in claim 1, characterized in that: The top of the purification box (15) is movably fitted with a sealing cover (17), and a sealing ring is fixed around the inner wall of the sealing cover (17).

7. The venting mechanism for precision injection molds as described in claim 1, characterized in that: The top of the cooling box (4) is hinged to a cover plate (5), and a liquid guide plate (8) is fixed to the bottom of the inner wall of the cooling box (4). The height of the liquid guide plate (8) near the spray plate (20) is greater than the height of the other end. A filter cotton (9) is fixed to the top of the liquid guide plate (8).

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