A cutting mechanism for injection molded parts
By designing a box-type clamp seat and a sliding shearing cylinder, combined with a guide hose to collect shearing waste, the problem of waste splashing during the shearing process is solved, achieving safe and stable shearing and convenient cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI QIANRUN INTELLIGENT TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-29
AI Technical Summary
The existing injection molding shearing mechanism lacks a semi-cylindrical structure connected to the shearing cylinder during the shearing process, which causes waste material to splash and scatter after shearing, affecting safety, stability and cleanability.
The injection-molded shell is held by a box-type connecting clamp seat, and the opening and closing are controlled by a sliding shearing cylinder hinged to a semi-cylinder. The waste material after shearing is collected and centrally processed through a connecting pipe and a guide hose.
It achieves safety and stability in the shearing process and centralized collection of waste materials, avoids splashing interference, and improves adaptability and ease of cleaning.
Smart Images

Figure CN224296473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding, and more specifically, to a shearing mechanism for injection molded parts. Background Technology
[0002] In injection molding production, a variety of products can be manufactured, especially the injection molded housings of lamps and water meters. They can be manufactured as a single piece and then processed, especially the shearing operation at the injection end.
[0003] The utility model patent with authorization announcement number CN 221659975 U relates to a shearing structure for injection-molded lens barrels. It includes a shearing fixture fixed to a frame, a shearing station for the injection-molded lens barrel on the shearing fixture, a lifting cutter bar directly above the shearing station, several cutting blades fixedly connected to the bottom periphery of the lifting cutter bar, a lifting pressure rod vertically passing through the inside of the lifting cutter bar, and a pressure head fixedly at the bottom end of the lifting pressure rod. This shearing structure for injection-molded lens barrels places the injection-molded lens barrel in a fixed posture on the shearing station of the shearing fixture. The lifting pressure rod first descends to drive the pressure head down to press down on the top of the lens barrel, and then the lifting cutter bar descends again to drive the cutting blades aligned with the sprue connection to complete the shearing. This results in high-quality cuts, aesthetically pleasing products, no impact on assembly, and high shearing efficiency.
[0004] In the above-disclosed structure, the cutting blade is connected to the lifting blade holder for positioning and cutting. However, the lack of a semi-cylindrical structure connected to the shearing cylinder causes the cut waste to fly out and scatter to various locations, making it impossible to collect and process in a centralized manner. This results in poor adaptability, difficulty in subsequent cleaning and maintenance, and insufficient safety and stability, which need to be improved. Utility Model Content
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a shearing mechanism for injection molded parts. A fixture seat is connected to the mounting bracket on the housing, which can be used to install a fixture to hold the injection molded shell. A semi-cylinder is hinged to the sliding shearing cylinder, thereby controlling the opening and closing to complete the shearing. Furthermore, a guide hose is installed through the connecting pipe, which can enclose and centrally collect and process the cut parts, avoiding splashing interference. The mechanism is safe, stable, and highly adaptable.
[0006] To solve the above problems, the present invention adopts the following technical solution.
[0007] A shearing mechanism for injection molded parts includes a housing. A cover plate is installed at one open end of the housing. A mounting bracket is fixedly connected to the upper surface of the housing. A clamp seat is fixedly connected to the upper interior of the mounting bracket. An alignment telescopic rod is fixedly installed on one side of the upper surface of the housing. An adjusting plate is fixedly connected to the head of the alignment telescopic rod. A shearing cylinder is fixedly installed at one end of the adjusting plate. A notch is provided on one side of the outer surface of the shearing cylinder. A hinge seat is fixedly connected to one side of the notch. A hinge rod is hinged to one end of the hinge seat. A semi-cylinder is fixedly connected to one end of the hinge rod. Both the shearing cylinder and the semi-cylinder have shearing blades at their ends. A tapered surface is provided at the lower interior end of the shearing cylinder. A connecting pipe is provided at the lower end of the tapered surface. A guide hose is fixedly installed at one end of the connecting pipe.
[0008] Furthermore, the flow guiding hose is fixedly connected to the lower surface of the shearing cylinder and is fixedly connected to the interior of the housing.
[0009] Furthermore, one end of the adjusting plate is provided with a guide hole, and a guide rod is slidably installed inside the guide hole.
[0010] Furthermore, the guide rod is fixedly connected to the upper surface of the box and is located on one side of the shearing cylinder. The guide rod is installed through the guide hole at one end of the adjusting plate, which can guide the support for limiting the position, ensuring the stability of the upper and lower alignment adjustment, and facilitating installation and use.
[0011] Furthermore, a support plate is fixedly connected to one side of the shearing cylinder, and a hinge frame is provided on the upper surface of the support plate.
[0012] Furthermore, a shearing telescopic rod is hinged to one end of the hinge frame, and the shearing telescopic rod is located on one side of the hinge seat.
[0013] Furthermore, the shearing telescopic rod has a push rod hinged to its head. The push rod is fixedly connected to the end of the hinged rod. The shearing telescopic rod and the push rod are hinged together by a support plate and can be combined and connected to the end of the hinged rod. This allows for pushing and pulling the semi-cylinder to flip and adjust, which is convenient, efficient, and easy to control.
[0014] Compared with existing technologies, the advantages of this utility model are:
[0015] (1) This solution connects the fixture seat to the mounting bracket on the box, which can install the fixture to hold the injection molded shell. The semi-cylinder is hinged to the sliding shearing cylinder to complete the shearing by opening and closing control. The flow guide hose is installed through the connecting pipe to close and collect the sheared material for centralized treatment, avoiding splashing interference. It is safe, stable and highly adaptable.
[0016] (2) By installing the guide rod through the guide hole at one end of the adjustment plate, the guide support can be limited to ensure the stability of the upper and lower alignment adjustment and facilitate installation and use.
[0017] (3) The shearing telescopic rod and push rod are installed by hinged mounting plate. They can be combined and connected to the end of the hinge rod, so as to push and pull the semi-cylinder to flip and adjust, which is convenient for opening and closing control for shearing, convenient and efficient, and easy to control. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a partial schematic diagram of the planar structure of this utility model;
[0020] Figure 3 This is a partial cross-sectional view of the connection between the semi-cylinder and the shearing cylinder of this utility model;
[0021] Figure 4 This is a partial structural diagram of the semi-cylindrical connection of this utility model;
[0022] Figure 5 This is a schematic diagram of the connection between the semi-cylinder and the shearing cylinder of this utility model.
[0023] Explanation of the labels in the diagram:
[0024] 1. Box body, 11. Cover plate, 12. Mounting bracket, 13. Clamp seat, 14. Alignment telescopic rod, 15. Adjusting plate, 16. Shearing cylinder, 17. Notch, 18. Hinge seat, 2. Hinge rod, 21. Semi-cylinder, 22. Shearing blade, 23. Conical surface, 24. Connecting pipe, 25. Flow guide hose, 26. Guide hole, 27. Guide rod, 3. Support plate, 31. Hinge bracket, 32. Shearing telescopic rod, 33. Push rod. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1 , Figure 4 and Figure 5A shearing mechanism for injection molded parts includes a housing 1. A cover plate 11 is installed at one open end of the housing 1. A mounting bracket 12 is fixedly connected to the upper surface of the housing 1. A clamping seat 13 is fixedly connected to the upper end of the mounting bracket 12, allowing for the installation of a clamping distance to hold injection-molded water meter housings or lamp housings for easy alignment and shearing. An alignment telescopic rod 14 is fixedly installed on one side of the upper surface of the housing 1. An adjusting plate 15 is fixedly connected to the head of the alignment telescopic rod 14. A shearing cylinder 16 is fixedly installed at one end of the adjusting plate 15. A notch 17 is provided on one side of the outer surface of the shearing cylinder 16. A hinge seat 18 is fixedly connected to one side of the notch 17. A hinge rod 21 is hinged to one end of the hinge seat 18. One end of the hinge rod 21 is fixedly connected to... The semi-cylinder 21, the shearing cylinder 16, and the ends of the semi-cylinder 21 are all equipped with shearing blades 22. The lower end of the interior of the shearing cylinder 16 is equipped with a conical surface 23, and the lower end of the conical surface 23 is equipped with a connecting pipe 24. One end of the connecting pipe 24 is fixedly installed with a flow guiding hose 25. The semi-cylinder 21 is hinged by the hinge rod 2, which can be opened and closed within the notch 17. Combined with the shearing blades 22, the shearing is completed. It is convenient and efficient. The shearing is carried out in a closed state to prevent the waste material from splashing out of the shearing cylinder 16. It is safe and stable. After the waste material is cleaned, it falls into the connecting pipe 24 and is guided by the flow guiding hose 25 to the inside of the box 1 for centralized collection. Finally, the cover plate 11 can be opened for cleaning and maintenance. It is convenient, stable, highly adaptable, and easy to use in combination.
[0027] Please see Figure 1 and Figure 2 The flow guide hose 25 is fixedly connected to the lower surface of the shearing cylinder 16 and is fixedly connected to the inside of the housing 1. One end of the adjusting plate 15 is provided with a guide hole 26. A guide rod 27 is slidably installed inside the guide hole 26. The guide rod 27 is fixedly connected to the upper surface of the housing 1 and is located on one side of the shearing cylinder 16. By installing the guide rod through the guide hole at one end of the adjusting plate, the guide support can be limited to ensure the stability of the upper and lower alignment adjustment and facilitate installation and use.
[0028] Please see Figure 1 , Figure 2 and Figure 3A support plate 3 is fixedly connected to one side of the shearing cylinder 16. A hinge frame 31 is provided on the upper surface of the support plate 3. A shearing telescopic rod 32 is hinged to one end of the hinge frame 31. The shearing telescopic rod 32 is located on one side of the hinge seat 18. A push rod 33 is hinged to the head of the shearing telescopic rod 32. The push rod 33 is fixedly connected to the end of the hinge rod 21. The shearing telescopic rod and the push rod are installed by hinged on the support plate. They can be combined and connected to the end of the hinge rod, thereby pushing and pulling the semi-cylinder to flip and adjust. This facilitates opening and closing control for shearing, making it convenient, efficient, and easy to control. The extension and retraction of the shearing telescopic rod 32 drives the push rod 33, thereby pulling the hinge rod 21 to flip and adjust. This allows the semi-cylinder 21 to flip inside the notch 17, facilitating opening and closing control. After opening, the shearing blade 22 can be aligned with the end of the injection molded part. Then, the shearing telescopic rod 32 can be extended to push the semi-cylinder 21 and the shearing cylinder 16 together for shearing. This facilitates production processing and is efficient and stable.
[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A shearing mechanism for injection molded parts, comprising a housing (1), wherein a cover plate (11) is mounted on one end of the housing (1), and a mounting bracket (12) is fixedly connected to the upper surface of the housing (1), characterized in that: The upper part of the mounting bracket (12) is fixedly connected to a clamp seat (13). A positioning telescopic rod (14) is fixedly installed on one side of the upper surface of the box (1). An adjusting plate (15) is fixedly connected to the head of the positioning telescopic rod (14). A shearing cylinder (16) is fixedly installed at one end of the adjusting plate (15). A notch (17) is provided on one side of the outer surface of the shearing cylinder (16). A hinge seat (18) is fixedly connected to one side of the notch (17). A hinge rod (2) is hinged to one end of the hinge seat (18). A semi-cylinder (21) is fixedly connected to one end of the hinge rod (2). A shearing blade (22) is provided at the ends of both the shearing cylinder (16) and the semi-cylinder (21). A conical surface (23) is provided at the lower part of the interior of the shearing cylinder (16). A connecting pipe (24) is provided at the lower end of the conical surface (23). A guide hose (25) is fixedly installed at one end of the connecting pipe (24).
2. The shearing mechanism for injection molded parts according to claim 1, characterized in that: The flow guide hose (25) is fixedly connected to the lower surface of the shearing cylinder (16) and is fixedly connected to the interior of the box (1).
3. The shearing mechanism for injection molded parts according to claim 1, characterized in that: One end of the adjusting plate (15) is provided with a guide hole (26), and a guide rod (27) is slidably installed inside the guide hole (26).
4. A shearing mechanism for injection molded parts according to claim 3, characterized in that: The guide rod (27) is fixedly connected to the upper surface of the box (1) and is located on one side of the shearing cylinder (16).
5. A shearing mechanism for injection molded parts according to claim 1, characterized in that: A support plate (3) is fixedly connected to one side of the shearing cylinder (16), and a hinge frame (31) is provided on the upper surface of the support plate (3).
6. A shearing mechanism for injection molded parts according to claim 5, characterized in that: One end of the hinge frame (31) is hinged to a shear telescopic rod (32), which is located on one side of the hinge seat (18).
7. A shearing mechanism for injection molded parts according to claim 6, characterized in that: The shear telescopic rod (32) has a push rod (33) hinged to its head, and the push rod (33) is fixedly connected to the end of the hinge rod (2).