Resin vacuumizing device

Abstract

The utility model provides a resin vacuumizing device, and belongs to the technical field of injection molding vacuumizing. Comprising a mold and a vacuumizing pump fixed to the top end of the mold, the mold comprises an upper mold and a lower mold, a mounting hole is formed in the top end of the upper mold, a vacuumizing pipe is fixed to the vacuumizing pump, and a cooling pipe tightly inserted into the mounting hole is fixed to the bottom end of the vacuumizing pipe. Wherein an elastic plate which is used for fixing the cooling pipe and is of an arc-shaped structure is arranged on the inner wall of the mounting hole, the two ends of the cooling pipe are each sleeved with a cooling plate, and a quick disassembly and assembly mechanism is arranged between the two cooling plates. The vacuumizing pump pumps out air in the tail fin cavity through the vacuumizing pipe, negative pressure assists flowing of injection molding liquid in the pumping-out process, air in the tail fin cavity is conveniently pumped out, and the problem that machining is affected due to the fact that the injection molding liquid is blocked by the air is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding vacuum extraction, and particularly relates to a resin vacuum extraction device. Background Art

[0002] Plastic molds are tools that are used in the plastic processing industry and are matched with plastic molding machines to endow plastic products with complete configurations and precise dimensions. Due to the variety of plastic varieties and processing methods, and the complexity of the structures of plastic molding machines and plastic products, the types and structures of plastic molds are also diverse. During the production of surfboard fins, the resin is heated and then injected into the mold, and after solidification in the mold, it is taken out.

[0003] The patent with the application number 202420569141.4 discloses a plastic shell injection mold. The cooperation of the pull rod and the sliding pin enables the workbench to turn upwards synchronously when the upper template and the lower template are separated, moving the injection-molded plastic shell to the front side, which is convenient for the staff to take, reduces the labor intensity of the staff, and improves safety at the same time. The cooperation of the ejector block and the tensioning component enables the processed plastic shell to automatically separate from the upper template when the upper template rises and automatically reset when the upper template and the lower template are closed, improving convenience while having a high degree of automation and stability. The ejector rod cooperates with the lower template and can jack up the processed plastic shell upwards after production is completed to prevent the plastic shell from adhering to the lower template.

[0004] Although the above technical solution is convenient for demolding parts, since the surfboard fin is in a flat structure, it is difficult for the injection liquid to flow in a narrow space during the injection process. Since the mold cavity is filled with air, the injection liquid is difficult to fully flow into the inner cavity of the mold, resulting in defects in the injection-molded parts affected by air. Therefore, the present application provides a resin vacuum extraction device to meet the requirements. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a resin vacuum extraction device to solve the problem that in the existing injection process, it is difficult for the injection liquid to flow in a narrow space. Since the mold cavity is filled with air, the injection liquid is difficult to fully flow into the inner cavity of the mold, resulting in defects in the injection-molded parts affected by air.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A resin vacuum pumping device, comprising a mold and a vacuum pump fixed to the top of the mold. The mold includes an upper mold and a lower mold. An installation hole is provided at the top of the upper mold. A vacuum pumping pipe is fixed to the vacuum pump. A cooling pipe is fixed to the bottom end of the vacuum pumping pipe and is tightly inserted into the installation hole. An elastic plate for fixing the cooling pipe in an arc structure is provided on the inner wall of the installation hole. Cooling plates are sleeved at both ends of the cooling pipe, and a quick disassembly and assembly mechanism is provided between the two cooling plates.

[0007] Optionally, a base is fixed to the bottom end of the lower mold, and positioning rods are installed in a rectangular array at the top end of the lower mold.

[0008] Optionally, the positioning rods are inserted into the upper mold in a fitting manner, and a fastening pipe is threadedly sleeved through the upper mold by multiple positioning rods.

[0009] Optionally, a connecting portion is fixed to the bottom end of the vacuum pumping pipe, and the cooling pipe is threadedly inserted into the connecting portion.

[0010] Optionally, a baffle plate that abuts against the upper mold is provided at the bottom end of the cooling pipe, and an arc-shaped groove is provided on the outer wall of the cooling pipe. The elastic plate is snap-fitted into the arc-shaped groove.

[0011] Optionally, a fin cavity is provided between the upper mold and the lower mold, and an injection pipe communicating with the fin cavity is fixed to the top end of the upper mold.

[0012] Optionally, an exhaust hole communicating with the fin cavity is provided in the fixed bottom wall of the installation hole, and a sealing gasket that abuts against the cooling pipe is embedded in the installation hole.

[0013] Optionally, positioning grooves are provided at both ends of one of the cooling plates, positioning plates that are symmetrically fixed to the side wall of the other cooling plate and are inserted into the positioning grooves in a fitting manner are provided, and water storage cavities are provided at the central positions of the two cooling plates.

[0014] Optionally, telescopic grooves are symmetrically provided at one end of the positioning plate passing through the positioning groove, and the quick disassembly and assembly mechanism includes a spring and a block embedded in the telescopic groove.

[0015] Optionally, the block is snap-fitted with the inner wall of the telescopic groove, and the block passes through the positioning groove and is tightly connected to the side wall of the cooling plate.

[0016] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0017] In the above solution, a vacuum pump is provided at the top of the upper mold. A vacuum extraction pipe is installed on the vacuum pump. The cooling pipe at the bottom end of the vacuum extraction pipe is inserted into the installation hole. The gasket on the bottom wall of the installation hole keeps the cooling pipe sealed, and the elastic plate on the side wall of the installation hole is clamped with the arc-shaped groove to keep the cooling pipe fixed. During the injection molding process, the vacuum pump extracts the air in the fin cavity through the vacuum extraction pipe, and the negative pressure assists the flow of the injection liquid during the extraction process, facilitating the extraction of the air in the fin cavity and avoiding the problem that the air blocks the injection liquid and affects the processing.

[0018] A cooling plate is sleeved on the cooling pipe. The water in the water storage cavity of the cooling plate cools the cooling pipe. When the injection liquid is sucked into the cooling pipe, the cooling plate cools and solidifies the injection liquid, greatly reducing the situation where the injection liquid is sucked into the vacuum extraction pipe. After the injection molding and cooling, the cooling pipe is unscrewed to clean the impurities inside. At the same time, the extrusion block on the side wall of the cooling plate is squeezed so that it shrinks into the telescopic groove, so that the two cooling plates are separated from the cooling pipe. After separation, a cooling plate with low-temperature coolant is replaced, and the positioning plate is inserted into the positioning groove, and the spring pushes the block to protrude on the side wall of the cooling plate, so that the cooling plate is fixed, improving the convenience of disassembly and replacement of the cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0020] Figure 1 is a three-dimensional structural schematic diagram of a resin vacuum extraction device;

[0021] Figure 2 is a sectional structural schematic diagram of a resin vacuum extraction device;

[0022] Figure 3 is Figure 2 a partial enlarged structural schematic diagram at A;

[0023] Figure 4 is a sectional structural schematic diagram of a cooling plate;

[0024] Figure 5 is Figure 4 a partial enlarged structural schematic diagram at B.

[0025] Reference Signs:

[0026] 1. Lower die; 2. Vacuum pump; 3. Base; 4. Fastening pipe; 5. Injection pipe; 6. Positioning rod; 7. Upper die; 8. Tail fin cavity; 9. Vacuum extraction pipe; 10. Baffle; 11. Cooling pipe; 12. Connection part; 13. Cooling plate; 14. Arc groove; 15. Gasket; 16. Exhaust hole; 17. Mounting hole; 18. Elastic plate; 19. Water storage cavity; 20. Positioning groove; 21. Positioning plate; 22. Telescopic groove; 23. Block; 24. Spring.

[0027] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0028] The following will describe in detail a resin vacuum extraction device provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0029] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, when combining embodiments to describe specific features, structures or characteristics, implementing such features, structures or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0030] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. In addition, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, allowing for the existence of other factors that may not be explicitly described.

[0031] It will be understood that the meanings of "on", "above" and "over" in the present utility model should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but may also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0032] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used herein may be interpreted accordingly.

[0033] As Figures 1 to 3 shown, an embodiment of the present utility model provides a resin vacuuming device, including a mold and a vacuum pump 2 fixed to the top of the mold. The mold includes an upper mold 7 and a lower mold 1. An installation hole 17 is formed in the top of the upper mold 7. A vacuum tube 9 is fixed to the vacuum pump 2. A cooling tube 11 tightly inserted into the installation hole 17 is fixed to the bottom end of the vacuum tube 9. An elastic plate 18 for fixing the cooling tube 11 in an arc structure is provided on the inner wall of the installation hole 17. Cooling plates 13 are sleeved at both ends of the cooling tube 11. A quick disassembly and assembly mechanism is provided between the two cooling plates 13.

[0034] A base 3 is fixed to the bottom end of the lower mold 1, and positioning rods 6 are installed at the top end of the lower mold 1 in a rectangular array. The positioning rods 6 are inserted into the upper mold 7 in a fitting manner, and a fastening tube 4 is threadedly sleeved on the upper mold 7 through the plurality of positioning rods 6. A connecting portion 12 is fixed to the bottom end of the vacuum extraction tube 9, and a cooling tube 11 is threadedly inserted into the connecting portion 12. A baffle 10 abuting against the upper mold 7 is arranged at the bottom end of the cooling tube 11, and an arc-shaped groove 14 is formed in the outer wall of the cooling tube 11. An elastic plate 18 is snap-fitted into the arc-shaped groove 14. A fin cavity 8 is arranged between the upper mold 7 and the lower mold 1, and an injection tube 5 communicating with the fin cavity 8 is fixed to the top end of the upper mold 7. An exhaust hole 16 communicating with the fin cavity 8 is formed in the bottom wall of the mounting hole 17, and a sealing gasket 15 abutting against the cooling tube 11 is embedded in the mounting hole 17. The cooling tube 11 at the bottom end of the vacuum extraction tube 9 is inserted into the mounting hole 17, and the sealing gasket 15 on the bottom wall of the mounting hole 17 keeps the cooling tube 11 sealed. The elastic plate 18 on the side wall of the mounting hole 17 is snap-fitted with the arc-shaped groove 14 to keep the cooling tube 11 fixed. During the injection process, a vacuum pump 2 extracts the air in the fin cavity 8 through the vacuum extraction tube 9, and the negative pressure assists the flow of the injection liquid during the extraction process.

[0035] As Figure 4 and Figure 5 shown, positioning grooves 20 are formed at both ends of one of the cooling plates 13, positioning plates 21 symmetrically fixed to the side wall of the other cooling plate 13 are inserted into the positioning grooves 20 in a fitting manner, and water storage cavities 19 are formed at the central positions of the two cooling plates 13. The end of the positioning plate 21 passing through the positioning groove 20 is symmetrically provided with telescopic grooves 22. The quick disassembly and assembly mechanism includes a spring 24 and a clamping block 23 embedded in the telescopic grooves 22. The clamping block 23 is clamped with the inner wall of the telescopic groove 22, and the clamping block 23 passes through the positioning groove 20 and is tightly connected with the side wall of the cooling plate 13. The water in the water storage cavity 19 in the cooling plate 13 cools the cooling tube 11. When the injection liquid is sucked into the cooling tube 11, the cooling plate 13 cools and solidifies the injection liquid, greatly reducing the situation where the injection liquid is sucked into the vacuum extraction tube 9. After the injection and cooling, the cooling tube 11 is unscrewed to clean the impurities inside, and at the same time, the clamping block 23 is squeezed from the side wall of the cooling plate 13 to contract into the telescopic groove 22, so that the two cooling plates 13 are separated from the cooling tube 11, and after separation, the cooling plate 13 with low-temperature coolant is replaced.

[0036] The working principle of the technical solution provided by the present utility model is as follows:

[0037] During use, insert the cooling pipe 11 at the bottom end of the vacuum extraction pipe 9 into the installation hole 17. The gasket 15 on the bottom wall of the installation hole 17 keeps the cooling pipe 11 sealed, and the elastic plate 18 on the side wall of the installation hole 17 is engaged with the arc-shaped groove 14 to keep the cooling pipe 11 fixed. During the injection molding process, the injection liquid is filled from the injection pipe 5. Start the vacuum extraction pump 2 to extract the air in the fin cavity 8 through the vacuum extraction pipe 9, and during the extraction process, negative pressure assists the flow of the injection liquid to facilitate the extraction of the air in the fin cavity 8. The water in the water storage cavity 19 of the cooling plate 13 cools the cooling pipe 11. When the injection liquid is sucked into the cooling pipe 11, the cooling plate 13 cools and solidifies the injection liquid, greatly reducing the situation where the injection liquid is sucked into the vacuum extraction pipe 9. After cooling and injection molding, unscrew the cooling pipe 11 to clean the impurities inside. At the same time, squeeze the clamping block 23 on the side wall of the cooling plate 13 to make it contract into the telescopic groove 22, so that the two cooling plates 13 are separated from the cooling pipe 11. After separation, replace the cooling plate 13 with low-temperature coolant, insert the positioning plate 21 into the positioning groove 20, and the spring 24 pushes the clamping block 23 to protrude on the side wall of the cooling plate 13, so that the cooling plate 13 is fixed, improving the convenience of disassembly and replacement of the cooling plate 13.

[0038] The present utility model covers any alternatives, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the following preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without these detailed descriptions. Additionally, in order to avoid unnecessary confusion to the essence of the present utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A resin vacuum pumping device, characterized in that: It includes a mold and a vacuum pump fixed on the top of the mold, the mold includes an upper mold and a lower mold, the top of the upper mold is opened with a mounting hole, a vacuum tube is fixed on the vacuum pump, a cooling tube tightly inserted in the mounting hole is fixed to the bottom of the vacuum tube, wherein the inner wall of the mounting hole is provided with an elastic plate for fixing the cooling tube in an arc structure, cooling plates are provided at both ends of the cooling tube, and a quick disassembly mechanism is provided between the two cooling plates.

2. The resin vacuum extraction device according to claim 1, characterized in that: A base is fixed to the bottom end of the lower mold, and positioning rods are installed in a rectangular array on the top end of the lower mold.

3. The resin vacuum extraction device according to claim 2, characterized in that: The positioning rods are inserted into the upper mold, and a plurality of positioning rods pass through the upper mold and are threadedly sleeved with fastening tubes.

4. The resin vacuum extraction device according to claim 1, characterized in that: A connecting portion is fixed to the bottom end of the vacuum tube, and the cooling tube is threadedly inserted into the connecting portion.

5. The resin vacuum extraction device according to claim 4, characterized in that: The bottom end of the cooling tube is provided with a baffle plate abutting against the upper mold, and the outer wall of the cooling tube is provided with an arc groove, and the elastic plate is fitted and clamped in the arc groove.

6. The resin vacuum extraction device according to claim 5, characterized in that: A tail fin cavity is arranged between the upper mold and the lower mold, and an injection tube connected with the tail fin cavity is fixed on the top of the upper mold.

7. The resin vacuum extraction device according to claim 6, characterized in that: The fixed bottom wall of the mounting hole is provided with an exhaust hole communicated with the tail fin cavity, and a sealing gasket abutting against the cooling pipe is embedded in the mounting hole.

8. The resin vacuum extraction device according to claim 1, characterized in that: Both ends of one of the cooling plates are provided with positioning grooves, and the side wall of the other cooling plate is symmetrically fixed with positioning plates that fit in the positioning grooves, and water storage cavities are provided at the center positions of the two cooling plates.

9. The resin vacuum extraction device according to claim 8, characterized in that: One end of the positioning plate passing through the positioning slot is symmetrically provided with a telescopic slot, and the quick disassembly and assembly mechanism comprises a spring and a clamping block embedded in the telescopic slot.

10. The resin vacuum extraction device according to claim 9, characterized in that: The clamping block is clamped with the inner wall of the telescopic slot, and the clamping block passes through the positioning slot and is tightly connected with the side wall of the cooling plate.

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