Negative-pressure recycling device for material edge of injection molding part

By designing a negative pressure recovery device for injection molded parts, the device automatically cleans the edges of injection molded parts using negative pressure and airflow principles, solving the problem of low efficiency in manual cleaning in existing technologies and achieving efficient automated cleaning and material reuse.

CN224196918UActive Publication Date: 2026-05-05DONGGUAN QIANJI ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN QIANJI ELECTRONICS CO LTD
Filing Date
2025-06-04
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

In existing technologies, after the injection gate is cut off, the edge material of the injection molded part remains on the cutting equipment, which requires manual cleaning, resulting in low processing efficiency and increased labor intensity.

Method used

Design a negative pressure recovery device for injection molded parts. The device uses a negative pressure generator to create negative pressure and airflow between the collection hood and the air outlet hood through the suction pipe and the air outlet pipe, respectively, to automatically clean the material edges and debris on the injection molded parts and collect them into the collection box.

Benefits of technology

It enables automated cleaning of the material edges of injection molded parts, improving processing efficiency, reducing manual labor intensity, and increasing the reuse rate of materials.

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Abstract

The utility model relates to the field of injection molding part machining, in particular to an injection molding part material edge negative pressure recovery device which comprises a collection box installed at the lower end of a machining table. A negative pressure generating piece is arranged in the collecting box, an air suction pipe is arranged at the end, away from the negative pressure generating piece, of the collecting box, and the other end of the air suction pipe is connected with a plurality of collecting covers; an air outlet pipe is arranged at the end, close to the negative pressure generating piece, of the collecting box, and the other end of the air outlet pipe is connected with an air outlet cover. The device has the beneficial effects that the negative pressure generating piece is arranged in the collecting box, the negative pressure generating piece enables the collecting cover to be in a negative pressure state through the air suction pipe, meanwhile, the air outlet cover is in an air outlet state through the air outlet pipe, when the material edge of the injection molding part is cut off, the air outlet cover blows away the material edge and sundries on the injection molding part, and the material edge is cut off. And meanwhile, the collecting cover sucks the blown-away material edges and impurities into the collecting box under negative pressure, and impurity removal treatment can be conducted on the injection molding part, so that the machining efficiency is effectively improved, and the labor intensity of workers is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of injection molding processing, and in particular to a negative pressure recovery device for injection molding material edges. Background Technology

[0002] Injection gates are channels or openings in injection molds used to inject molten plastic. During the injection molding process, plastic granules are heated and melted, then enter the mold cavity through the injection gate, filling the cavity and forming the desired plastic product. Typically, the injection gate is connected to the finished injection molded part, requiring subsequent cutting to separate it from the part.

[0003] Currently, after the cutting equipment removes the injection gate of the injection molded part, the edge material of the injection molded part is left on the cutting equipment. It is necessary to stop the machine and have the staff manually clean it, which increases the workload and reduces the processing efficiency of the injection molded part. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0005] A negative pressure recovery device for injection molded parts includes a collection box installed at the lower end of the processing table;

[0006] The inside of the collection box is equipped with a negative pressure generating element. An air suction pipe is installed at the end of the collection box away from the negative pressure generating element. The other end of the air suction pipe is connected to multiple collection hoods, which are respectively installed on the outside of the processing table.

[0007] The collection box is equipped with an air outlet pipe at one end near the negative pressure generating component, and the other end of the air outlet pipe is connected to an air outlet hood. The air outlet hood is located on the upper part of the processing table and is positioned relative to the processing table.

[0008] As a further embodiment of this invention: a collection net is provided inside the collection box on the side near the negative pressure generating component.

[0009] As a further embodiment of this utility model: a cover plate is provided on the side of the collection cover away from the processing table, and the height of the cover plate is higher than that of the processing table.

[0010] As a further embodiment of this utility model: a telescopic cylinder is provided at the upper end of the air outlet hood, and the telescopic end of the telescopic cylinder is connected to the upper end of the air outlet hood.

[0011] As a further embodiment of this utility model, the negative pressure generating component is either a vacuum pump or a centrifugal fan.

[0012] As a further embodiment of this utility model: a door is hinged on the side of the collection box away from the air inlet and outlet pipes, and a handle is provided on the door.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a negative pressure generating component inside the collection box, the negative pressure generating component makes the collection hood negative pressure through the suction pipe, and at the same time makes the air outlet hood air outlet through the air outlet pipe. When the material edge of the injection molded part is cut off, the air outlet hood blows the material edge and debris on the injection molded part outward, and at the same time, the collection hood sucks the blown material edge and debris into the collection box under negative pressure. This can remove impurities from the injection molded part, thereby effectively improving processing efficiency and reducing manual labor intensity.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the left view of this utility model.

[0018] The following components are shown in the diagram: 1. Collection box; 2. Negative pressure generating component; 3. Suction pipe; 4. Collection cover; 5. Exhaust pipe; 6. Exhaust hood; 7. Collection net; 8. Cover plate; 9. Telescopic cylinder; 10. Box door; 11. Handle. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Please see Figure 1-2 A negative pressure recovery device for injection molded parts includes a collection box 1 installed at the lower end of the processing table;

[0024] The inside of the collection box 1 is equipped with a negative pressure generating element 2. The end of the collection box 1 away from the negative pressure generating element 2 is equipped with a suction pipe 3. The other end of the suction pipe 3 is connected to multiple collection covers 4, which are respectively set on the outside of the processing table.

[0025] The collection box 1 is provided with an air outlet pipe 5 at one end near the negative pressure generating component 2, and the other end of the air outlet pipe 5 is connected to an air outlet hood 6. The air outlet hood 6 is located at the upper end of the processing table and is positioned relative to the processing table.

[0026] After the material edge of the injection molded part is cut off, the negative pressure generator 2 works, generating negative pressure in the collection hood 4 through the suction pipe 3, and at the same time, the air outlet pipe 5 makes the air outlet hood 6 in the air outlet state, which can blow away the material edge and debris cut off from the injection molded part. The blown material edge and debris are then sucked into the collection box 1 by the negative pressure through the collection hood 4.

[0027] A further solution: A collection net 7 is installed inside the collection box 1 on the side near the negative pressure generating component 2.

[0028] It can retain the material edges and debris sucked in through the collection hood 4 in the collection box 1, which facilitates subsequent processing and improves the material reuse rate.

[0029] A further solution: A cover plate 8 is provided on the side of the collection cover 4 away from the processing table, and the height of the cover plate 8 is higher than that of the processing table.

[0030] This allows material edges and debris to enter the collection hood 4 more effectively.

[0031] A further solution: A telescopic cylinder 9 is provided at the upper end of the air outlet hood 6, and the telescopic end of the telescopic cylinder 9 is connected to the upper end of the air outlet hood 6.

[0032] The height of the air hood 6 can be adjusted according to the size of the injection molded part, thereby improving the cleaning efficiency of the injection molded part.

[0033] A further option: The negative pressure generating component 2 can be either a vacuum pump or a centrifugal fan.

[0034] It can facilitate the collection hood 4 to quickly enter a negative pressure state, thereby improving work efficiency.

[0035] A further solution: A door 10 is hinged to the side of the collection box 1 away from the air inlet pipe 3 and the air outlet pipe 5, and a handle 11 is provided on the door 10.

[0036] It facilitates the handling of material edges and debris in the collection box 1, thereby improving the material reuse rate.

[0037] The circuits, electronic components, and control modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0038] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A negative pressure recovery device for injection molded parts, characterized in that: Includes a collection box (1) installed at the lower end of the processing table; The inside of the collection box (1) is equipped with a negative pressure generating component (2). A suction pipe (3) is provided at one end of the collection box (1) away from the negative pressure generating component (2). The other end of the suction pipe (3) is connected to multiple collection covers (4). The collection covers (4) are respectively set on the outside of the processing table. The collection box (1) is provided with an air outlet pipe (5) at one end near the negative pressure generating component (2), and the other end of the air outlet pipe (5) is connected to an air outlet hood (6). The air outlet hood (6) is located at the upper end of the processing table and is positioned relative to the processing table.

2. The injection molded part edge negative pressure recovery device according to claim 1, characterized in that: A collection net (7) is provided inside the collection box (1) on the side near the negative pressure generating component (2).

3. The injection molded part edge negative pressure recovery device according to claim 1, characterized in that: A cover plate (8) is provided on the side of the collection cover (4) away from the processing table, and the height of the cover plate (8) is higher than that of the processing table.

4. The negative pressure recovery device for injection molded parts according to claim 1, characterized in that: A telescopic cylinder (9) is provided at the upper end of the air outlet hood (6), and the telescopic end of the telescopic cylinder (9) is connected to the upper end of the air outlet hood (6).

5. The injection molded part edge negative pressure recovery device according to claim 1, characterized in that: The negative pressure generating component (2) is either a vacuum pump or a centrifugal fan.

6. The negative pressure recovery device for injection molded parts according to claim 1, characterized in that: The collection box (1) is hinged to a door (10) on the side away from the air inlet pipe (3) and the air outlet pipe (5), and a handle (11) is provided on the door (10).