Multifunctional mold exhaust structure for processing

Abstract

This utility model discloses a multifunctional mold venting structure for processing, relating to the field of mold technology. The utility model includes a base plate, a lower mold body fixedly connected to the top of the base plate, an upper mold body positioned on top of the lower mold body, and an injection pipe and an venting pipe respectively connected to the top of the upper mold body. A sealing assembly is provided inside the venting pipe, comprising a sealing plate fixedly connected to one side of the venting pipe, a movable plate positioned on top of the sealing plate, and a plug fixedly connected to the bottom of the movable plate. This utility model achieves rapid venting of high-pressure gas during injection molding through the synergistic action of the movable plate, plug, threaded rod, and threaded sleeve in the sealing assembly. When the gas pressure increases, the sealing plug is forced open, the spring is stretched, and the gas is discharged through the vent hole; as the gas pressure decreases, the spring drives the sealing plug to reset, automatically closing the vent hole and preventing external air from entering.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a multi-functional mold venting structure for processing. Background Technology

[0002] A mold is a tool used to manufacture parts or products, typically made of metals such as steel and aluminum. It holds and shapes raw materials to obtain the desired product shape. To ensure a smooth injection molding process, avoid product defects, and improve the quality of the finished product, molds utilize venting structures during product injection.

[0003] A utility model patent application with publication number CN220742001U discloses a multifunctional venting structure for injection molds, including a lower mold body. An upper mold body is fixedly connected to the upper surface of the lower mold body. The hollow space between the lower mold body and the upper mold body forms a mold cavity. A plug groove is provided near the mold cavity at the connection between the lower mold body and the upper mold body. A sliding groove is provided away from the plug groove at the connection between the lower mold body and the upper mold body. The plug groove is slidably connected to a venting block. By setting a venting block, a locking block, and a venting pipe, residual air in the mold during the injection molding process can be discharged, and there are no obvious burrs at the contact point between the venting hole and the product, thereby improving product quality.

[0004] Although the above technical solution achieves the functions of venting and protecting the product during mold injection through venting blockage, the venting structure is located on both sides of the lower and upper mold bodies. During the injection process, the molten plastic will come into contact with the venting blockage, affecting the venting volume. In addition, the gas is discharged directly without any treatment during the venting process. The gas discharged from the mold contains volatile organic compounds, toxic gases or other pollutants, which can easily cause environmental pollution if discharged directly. At the same time, the venting structure is not sealed after the internal gas is discharged, which can easily allow external gas to enter and affect the product injection.

[0005] To address these issues, we provide a multi-functional mold venting structure for machining. Utility Model Content

[0006] The purpose of this utility model is to provide a multifunctional mold exhaust structure for processing, which solves the problems of insufficient exhaust volume and direct emission pollution in the environment of existing mold exhaust structures during use through sealing components and processing components.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model is a multifunctional mold venting structure for processing, including a base plate, a lower mold body fixedly connected to the top of the base plate, an upper mold body disposed on the top of the lower mold body, and an injection pipe and an venting pipe respectively connected to the top of the upper mold body; a sealing assembly is disposed inside the venting pipe, the sealing assembly including a sealing plate fixedly connected to one side inside the venting pipe, a movable plate disposed on the top of the sealing plate, and a plug fixedly connected to the bottom of the movable plate;

[0009] The top of the upper mold body is provided with a processing component, which includes a movable tube movably connected to the inner surface of the exhaust pipe and activated carbon disposed inside the movable tube.

[0010] The present invention is further configured such that the sealing assembly includes a threaded rod disposed inside the exhaust pipe, a threaded sleeve rod threadedly connected to the surface of the threaded rod, a horizontal plate movably connected to the surface of the threaded rod, a vent hole opened at the top of the horizontal plate, a fixed shell fixedly connected to the bottom of the horizontal plate, a spring fixedly connected to the top of the fixed shell, and a sealing plug fixedly connected to the top of the spring.

[0011] The present invention is further configured such that the processing component includes a tube head threaded to the inner surface of the movable tube, and a filter screen fixedly connected to one side of the movable tube and one side of the tube head.

[0012] The present invention is further configured such that a fixing plate is provided on one side of the threaded sleeve rod, a guide rod is fixedly connected to the top of the fixing plate, and a limiting plate is sleeved on the surface of the guide rod.

[0013] The present invention is further configured such that a guide rod is fixedly connected to the top of the cross plate, and a movable plate is sleeved on the surface of the guide rod.

[0014] The present invention is further configured such that a sealing head is threadedly connected to the inner surface of the injection-molded tube, and the sealing head is in contact with the injection-molded tube.

[0015] The present invention is further configured such that a connecting plate is fixedly connected to one side of both the upper mold body and the lower mold body, and the two connecting plates are fixedly connected by bolts.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model achieves rapid discharge of high-pressure gas during injection molding through the synergistic action of the movable plate, plug, threaded rod, and threaded sleeve rod in the sealing assembly. When the gas pressure increases, the sealing plug is forced open, the spring is stretched, and the gas is discharged through the vent hole; as the gas pressure decreases, the spring drives the sealing plug to reset, automatically closing the vent hole and preventing external air from entering. In addition, the rotation of the threaded rod can further control the raising and lowering of the plug, achieving a double sealing effect and effectively avoiding injection molding defects caused by poor sealing in traditional exhaust structures. The movable tube in the treatment assembly contains activated carbon and a filter screen. During the exhaust process, the gas needs to be purified by activated carbon adsorption, effectively removing volatile organic compounds and toxic substances, reducing environmental pollution. The movable tube and the tube head are connected by threads, which facilitates regular replacement of activated carbon and ensures a long-term stable purification effect.

[0018] 2. This utility model features handles at the sealing head and pipe end for easy manual operation; the guide rods and guide bars ensure stable movement of the sealing plug and movable plate, preventing jamming. Simultaneously, the modular design of the injection pipe and vent pipe makes maintenance and cleaning more convenient, improving mold lifespan and efficiency. By integrating venting, sealing, and gas treatment functions into one unit, it solves the problem of the single function of traditional mold venting structures, meeting the requirements for efficient venting while also considering environmental protection and sealing performance, significantly improving the quality of injection molded products and the safety of the production environment.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a multi-functional mold exhaust structure for processing.

[0022] Figure 2 This is a cross-sectional view of the upper mold body in a multifunctional mold venting structure for machining.

[0023] Figure 3 This is a cross-sectional view of the injection pipe in a multifunctional mold venting structure for processing.

[0024] Figure 4 This is a cross-sectional view of the exhaust pipe in a multi-functional mold exhaust structure for machining.

[0025] Figure 5This is a diagram showing the state of the plug moving upwards in the venting structure of a multifunctional mold for processing.

[0026] In the attached diagram: 1. Base plate; 2. Lower mold body; 3. Upper mold body; 4. Injection tube; 5. Exhaust pipe; 6. Sealing assembly; 601. Sealing plate; 602. Movable plate; 603. Plug; 604. Threaded rod; 605. Threaded sleeve rod; 606. Horizontal plate; 607. Vent hole; 608. Fixed shell; 609. Spring; 610. Sealing plug; 7. Processing assembly; 701. Movable tube; 702. Activated carbon; 703. Tube head; 704. Filter screen; 8. Sealing head. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0029] Please see Figures 1-5 This utility model is a multifunctional mold venting structure for processing, including a base plate 1, a lower mold body 2 fixedly connected to the top of the base plate 1, an upper mold body 3 disposed on the top of the lower mold body 2, the upper mold body 3 and the lower mold body 2 being in contact with each other, the upper mold body 3 and the lower mold body 2 together forming an injection cavity, the top of the upper mold body 3 being respectively connected to an injection pipe 4 and an venting pipe 5, the injection pipe 4 being used for pouring molten plastic; a sealing component 6 is disposed inside the venting pipe 5, the sealing component 6 including a sealing plate 601 fixedly connected to one side inside the venting pipe 5, and disposed on the top of the sealing plate 601. The movable plate 602 has its bottom in contact with the sealing plate 601. A plug 603 is fixedly connected to the bottom of the movable plate 602. The top of the sealing plate 601 has a through groove that matches the plug 603. The plug 603 is located inside the through groove and in contact with the sealing plate 601. The top of the upper mold body 3 is provided with a processing component 7. The processing component 7 includes a movable tube 701 that is movably connected to the inner surface of the exhaust pipe 5. The movable tube 701 and the exhaust pipe 5 are movably connected through a sealed bearing. Activated carbon 702 is disposed inside the movable tube 701. Specific Implementation Example 2

[0031] Please see Figures 1-5Based on the first specific embodiment, the sealing assembly 6 further includes a threaded rod 604 disposed inside the exhaust pipe 5. The top of the threaded rod 604 is fixedly connected to the filter screen 704 inside the movable pipe 701. A threaded sleeve rod 605 is threadedly connected to the surface of the threaded rod 604. The bottom of the threaded sleeve rod 605 is fixedly connected to the movable plate 602. A horizontal plate 606 is movably connected to the surface of the threaded rod 604 through a sealing bearing. The horizontal plate 606 is fixedly connected to the exhaust pipe 5. A vent hole 607 is opened at the top of the horizontal plate 606. A fixed shell 608 is fixedly connected to the bottom of the horizontal plate 606. A spring 609 is fixedly connected to the top of the fixed shell 608. A sealing plug 610 is fixedly connected to the top of the spring 609. The sealing plug 610 contacts the horizontal plate 606 and elastically seals the vent hole 607 through the sealing plug 610. The processing assembly 7 further includes a threaded connection to the inner surface of the movable pipe 701. The tube head 703 is fixedly connected to the filter screen 704 inside the movable tube 701 and the tube head 703. Activated carbon 702 is laid on the top of the filter screen 704 inside the movable tube 701. A fixing plate is provided on one side of the threaded sleeve rod 605. A guide rod is fixedly connected to the top of the fixing plate. A limiting plate is sleeved on the surface of the guide rod. The fixing plate is fixedly connected to the exhaust pipe 5. The limiting plate is fixedly connected to the threaded sleeve rod 605. The limiting plate can move along the guide rod direction on the surface of the guide rod. A guide rod is fixedly connected to the top of the horizontal plate 606. A moving plate is sleeved on the surface of the guide rod. The moving plate is fixedly connected to the sealing plug 610. The moving plate can move along the guide rod direction on the surface of the guide rod. A sealing head 8 is threadedly connected to the inner surface of the injection tube 4. The sealing head 8 is in contact with the injection tube 4. A handle is fixedly connected to the top of both the sealing head 8 and the tube head 703. A connecting plate is fixedly connected to one side of both the upper mold body 3 and the lower mold body 2. The two connecting plates are fixedly connected by bolts.

[0032] The operation process in this embodiment is as follows: Molten plastic is injected into the mold cavity through the injection tube 4, and a sealed space is formed after the sealing head 8 is closed. At this time, the plug 603 is in the through groove under the action of the threaded rod 604, and is in close contact with the sealing plate 601 to achieve initial sealing. Rotating the tube head 703 drives the threaded rod 604 to rotate, and the threaded sleeve rod 605 pushes the movable plate 602 and the plug 603 upward, opening the through groove. High-pressure gas rushes open the sealing plug 610, enters the exhaust pipe 5 through the vent hole 607, and is discharged after being purified by the activated carbon 702. The spring 609 is stretched, and the sealing plug 610 remains open to ensure smooth exhaust.

[0033] When the air pressure inside the mold cavity balances with the external pressure, the spring 609 contracts, causing the sealing plug 610 to reset and seal the vent 607. Simultaneously, the threaded rod 604 rotates in the opposite direction, causing the plug 603 to re-insert into the through groove, forming a double seal to prevent gas backflow or external contamination. Periodically unscrewing the tube head 703 to replace the activated carbon 702, or disassembling the sealing head 8 to clean residue from the injection tube 4, ensures the long-term stable operation of all components. Through the above-mentioned structural linkage, automated control of venting, purification, and sealing is achieved, significantly improving the practicality and environmental performance of the mold.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-functional mold venting structure for processing, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to the top of the lower mold body (2), and the top of the lower mold body (2) is provided with an upper mold body (3). The top of the upper mold body (3) is respectively connected to the injection pipe (4) and the exhaust pipe (5); The exhaust pipe (5) is provided with a sealing assembly (6), which includes a sealing plate (601) fixedly connected to one side of the exhaust pipe (5), a movable plate (602) disposed on the top of the sealing plate (601), and a plug (603) fixedly connected to the bottom of the movable plate (602). The upper mold body (3) is provided with a processing component (7) on its top. The processing component (7) includes a movable tube (701) movably connected to the inner surface of the exhaust pipe (5) and activated carbon (702) disposed inside the movable tube (701).

2. The multi-functional mold venting structure for processing according to claim 1, characterized in that, The sealing assembly (6) further includes a threaded rod (604) disposed inside the exhaust pipe (5), a threaded sleeve rod (605) threadedly connected to the surface of the threaded rod (604), a horizontal plate (606) movably connected to the surface of the threaded rod (604), a vent hole (607) opened at the top of the horizontal plate (606), a fixed shell (608) fixedly connected to the bottom of the horizontal plate (606), a spring (609) fixedly connected to the top of the fixed shell (608), and a sealing plug (610) fixedly connected to the top of the spring (609).

3. The multi-functional mold venting structure for processing according to claim 1, characterized in that, The processing component (7) further includes a tube head (703) threaded to the inner surface of the movable tube (701) and a filter screen (704) fixedly connected to one side inside the movable tube (701) and one side inside the tube head (703).

4. The venting structure for a multifunctional mold used in processing according to claim 2, characterized in that, A fixing plate is provided on one side of the threaded sleeve (605), and a guide rod is fixedly connected to the top of the fixing plate. A limiting plate is sleeved on the surface of the guide rod.

5. The multi-functional mold venting structure for processing according to claim 2, characterized in that, A guide rod is fixedly connected to the top of the horizontal plate (606), and a movable plate is sleeved on the surface of the guide rod.

6. The multi-functional mold venting structure for processing according to claim 1, characterized in that, The inner surface of the injection tube (4) is threaded with a sealing head (8), which is in contact with the injection tube (4).

7. The multi-functional mold venting structure for processing according to claim 1, characterized in that, Both the upper mold body (3) and the lower mold body (2) are fixedly connected to one side with connecting plates, and the two connecting plates are fixedly connected by bolts.

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