Injection molded part shearing device
By designing a finished product storage box and a hydraulic telescopic cylinder to work together to cut injection molded parts, the problems of insufficient precision and low automation of traditional cutting devices have been solved, realizing automated collection and precise cutting, improving production efficiency and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU ZHUOXINHUI PLASTIC MOULD CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional injection molding shearing devices suffer from insufficient shearing precision, low automation, and the need for manual collection of finished materials after shearing, which increases labor costs and affects work efficiency.
A cutting device for injection molded parts was designed, comprising a finished product storage box, a hydraulic telescopic cylinder, a sliding plate, a buffer spring, and a fixing device. The hydraulic telescopic cylinder drives the shearing blade to be precisely positioned, the buffer spring absorbs the shearing impact force, and the fixing device ensures that the cut parts are fixed, thereby achieving automated collection and improving cutting accuracy.
It enables automatic collection of injection molded parts after shearing, improves shearing accuracy and efficiency, reduces labor costs, extends equipment life, and optimizes the production process.
Smart Images

Figure CN224255875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shearing technology, specifically to a shearing device for injection molded parts. Background Technology
[0002] Shearing is a crucial step in the injection molding process. Traditional shearing devices suffer from insufficient shearing precision and low automation.
[0003] Utility model patent CN221809380U discloses a cutting device for injection molded parts, including a centering conveying mechanism, a cutting mechanism, and a housing. The centering conveying mechanism includes two symmetrically arranged long racks, both of which are fixedly connected to the inside of the housing by screws. An electric motor is installed inside the housing, and two symmetrically arranged rotating screws are rotatably installed inside the housing. One of the rotating screws is connected to the output end of the electric motor through a coupling. Through the arrangement of the electric motor, sliding clamping block, and other structures, the material is placed on a material placement plate. When the material is placed, it is aligned with both ends of the material placement plate. Then, the electric motor is turned on, moving the material placement plate to the bottom of the cutting blade. At the same time, the sliding clamping block centers and clamps the material, improving its efficiency and cutting accuracy.
[0004] In the aforementioned application, a rotating screw driven by an electric motor is used to center, convey, and clamp the material. While this improves efficiency and cutting accuracy, it also makes it impossible to collect the finished material after shearing, requiring manual collection, which increases labor costs and affects the efficiency of the shearing machine. Therefore, we propose a shearing device for injection molded parts. Utility Model Content
[0005] This utility model proposes a cutting device for injection molded parts.
[0006] The technical solution of this utility model is as follows: a cutting device for injection molded parts, including a finished product storage box, a processing panel fixedly connected to the top of the finished product storage box, a control panel provided in the finished product storage box, and a cutting device provided on the top of the processing panel.
[0007] The shearing device includes a support plate, which is fixedly connected to the top of the processing panel. A mounting plate is fixedly connected to the top of the support plate. A hydraulic telescopic cylinder is provided on the top of the mounting plate. A connecting plate is fixedly connected to the telescopic end of the hydraulic telescopic cylinder. A blade holder connecting plate is fixedly connected to the bottom of the connecting plate. A shearing blade is fixedly connected to the bottom of the blade holder connecting plate. An injection molded part placement plate is provided on the top of the processing panel. A sliding groove is provided on the side of the support plate. A sliding plate is fixedly connected to the side of the connecting plate.
[0008] A buffer spring is fixedly connected to the top of the chute, and a buffer pad is fixedly connected to the end of the buffer spring away from the support plate. A material discharge hole is opened at the top of the processing panel, which is used to allow the sheared injection molded parts to fall smoothly into the finished product storage box, ensuring that the production process is efficient and smooth.
[0009] The side of the slide plate is slidably connected to the inner side of the slide groove, and the circumferential surface of the hydraulic telescopic cylinder telescopic column is slidably connected to the circumferential surface of the mounting plate. Its function is to ensure that the shearing blade is stable and accurate during the shearing process, reduce errors, and improve the shearing quality.
[0010] The hydraulic telescopic cylinder, slide plate, buffer spring, and buffer pad are provided in two quantities and are symmetrically distributed along the vertical central axis of the support plate. Their function is to ensure that the shearing device remains balanced when subjected to bidirectional force, further improve shearing stability and accuracy, extend the service life of the equipment, and improve overall production efficiency.
[0011] The bottom of the buffer pad is located on the displacement trajectory of the top of the slide plate, and the inside of the discharge hole is through the inside of the finished product storage box. Its function is to ensure that the cut injection molded parts can fall into the finished product storage box quickly and smoothly, avoid jamming, improve discharge efficiency, and ensure production continuity.
[0012] A fixing device is provided on the side of the connecting plate. The fixing device includes a fixed connecting plate. A limit sleeve is fixedly connected to the side of the fixed connecting plate. A compression spring is fixedly connected to the top of the inner side of the limit sleeve. A slider is fixedly connected to the end of the compression spring away from the limit sleeve. A top post is fixedly connected to the bottom of the slider. Its function is to effectively fix the workpiece to be cut during the cutting process, ensure cutting accuracy, and reduce labor costs.
[0013] A gasket is fixedly connected to the end of the top post away from the slider. There are four top posts and gaskets, arranged in pairs along the vertical central axis of the connecting plate. Their function is to enhance the fixing force of the top post on the workpiece being sheared, ensure no displacement during the shearing process, further improve the shearing accuracy and efficiency, and ensure product quality.
[0014] The circumferential surface of the slider is slidably connected to the inner circumferential surface of the limiting sleeve. There are four sliders and limiting sleeves, arranged in pairs along the vertical central axis of the connecting plate. Their function is to ensure that the slider slides stably during the shearing process, avoid deviation, further optimize the shearing accuracy, extend the service life of the equipment, and improve the overall production efficiency.
[0015] The working principle and beneficial effects of this utility model are as follows:
[0016] 1. This utility model achieves precise positioning and stable shearing of the shearing blade through the cooperation of components such as the support plate, mounting plate, and hydraulic telescopic cylinder in the shearing device. This ensures smooth edges on the injection molded parts after shearing, improving the product qualification rate. Simultaneously, the design of the buffer spring and buffer pad effectively absorbs the shearing impact force, protecting the equipment and extending its service life. The symmetrical distribution of the hydraulic telescopic cylinder ensures bidirectional force balance, further improving the stability and accuracy of the shearing process, optimizing the overall production process, and achieving automated collection.
[0017] 2. This utility model achieves a firm fixation of the workpiece being sheared through the cooperation of components such as the fixing connecting plate, limiting sleeve, and compression spring in the fixing device, avoiding displacement and offset during the shearing process and ensuring shearing accuracy and efficiency. The design of the top column and gasket enhances the fixing force, further improving product quality and production efficiency.
[0018] 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
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a three-dimensional side view structural schematic diagram of the present invention;
[0022] Figure 3 This is a magnified three-dimensional side view of the present invention.
[0023] Figure 4 This is a three-dimensional enlarged structural schematic diagram of the shearing device of this utility model;
[0024] Figure 5 This is a three-dimensional cross-sectional structural diagram of the fixing device of this utility model.
[0025] In the diagram: 1. Finished product storage box; 2. Processing panel; 3. Control panel; 4. Shearing device; 401. Support plate; 402. Mounting plate; 403. Hydraulic telescopic cylinder; 404. Connecting plate; 405. Tool holder connecting plate; 406. Shearing blade; 407. Injection molded part placement plate; 408. Slide groove; 409. Slide plate; 5. Buffer spring; 6. Buffer pad; 7. Material discharge hole; 8. Fixing device; 801. Fixing connecting plate; 802. Limit sleeve; 803. Compression spring; 804. Slider; 805. Top column; 9. Gasket. Detailed Implementation
[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0027] Example 1
[0028] like Figures 1-5 As shown in the figure, this embodiment proposes an injection molded part cutting device, including a finished product storage box 1, a processing panel 2 fixedly connected to the top of the finished product storage box 1, a control panel 3 provided in the finished product storage box 1, and a cutting device 4 provided on the top of the processing panel 2.
[0029] The shearing device 4 includes a support plate 401, which is fixedly connected to the top of the processing panel 2. A mounting plate 402 is fixedly connected to the top of the support plate 401. A hydraulic telescopic cylinder 403 is provided on the top of the mounting plate 402. A connecting plate 404 is fixedly connected to the telescopic end of the hydraulic telescopic cylinder 403. A knife holder connecting plate 405 is fixedly connected to the bottom of the connecting plate 404. A shearing blade 406 is fixedly connected to the bottom of the knife holder connecting plate 405. An injection molded part placement plate 407 is provided on the top of the processing panel 2. A sliding groove 408 is provided on the side of the support plate 401. A sliding plate 409 is fixedly connected to the side of the connecting plate 404.
[0030] A buffer spring 5 is fixedly connected to the top of the slide 408. A buffer pad 6 is fixedly connected to the end of the buffer spring 5 away from the support plate 401. A material discharge hole 7 is opened on the top of the processing panel 2. Its function is to allow the cut injection molded parts to fall smoothly into the finished product storage box 1, ensuring that the production process is efficient and smooth.
[0031] The side of the slide plate 409 is slidably connected to the inner side of the slide groove 408, and the circumferential surface of the hydraulic telescopic cylinder 403 telescopic column is slidably connected to the circumferential surface of the mounting plate 402. Its function is to ensure that the shearing blade 406 is stable and accurate during the shearing process, reduce errors, and improve the shearing quality.
[0032] There are two hydraulic telescopic cylinders 403, slide plate 409, buffer spring 5 and buffer pad 6, which are symmetrically distributed along the vertical central axis of the support plate 401. Their function is to ensure that the shearing device 4 remains balanced when subjected to bidirectional force, further improve shearing stability and accuracy, extend the service life of the equipment and improve overall production efficiency.
[0033] The bottom of the buffer pad 6 is located on the displacement trajectory of the top of the slide plate 409. The inside of the discharge hole 7 is through the inside of the finished product storage box 1. Its function is to ensure that the injection molded parts after shearing can fall into the finished product storage box 1 quickly and smoothly, avoid jamming, improve discharge efficiency, and ensure production continuity.
[0034] In this embodiment, when it is necessary to cut the injection molded part, the operator first places the product on the injection molded part placement plate 407, and starts the hydraulic telescopic cylinder 403 through the control panel 3. The telescopic end of the hydraulic telescopic cylinder 403 drives the connecting plate 404 to move downward. The connecting plate 404 drives the blade holder connecting plate 405 and the shearing blade 406 to move downward synchronously, thereby cutting the injection molded part placed on the injection molded part placement plate 407. During the cutting process, the slide plate 409 slides in the slide groove 408, which plays a guiding and stabilizing role. After the shearing blade 406 completes the cutting action, the telescopic end of the hydraulic telescopic cylinder 403 drives the connecting plate 404 to move upward. At this time, the buffer spring 5 and the buffer pad 6 play a buffering role, reducing the impact and vibration of the shearing blade 406 during the return stroke, protecting the equipment and improving its service life. The cut injection molded part falls smoothly into the finished product storage box 1 through the discharge hole 7, completing the entire cutting process.
[0035] Example 2
[0036] like Figures 1-5 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes a fixing device 8. The fixing device 8 is provided on the side of the connecting plate 404. The fixing device 8 includes a fixing connecting plate 801. A limiting sleeve 802 is fixedly connected to the side of the fixing connecting plate 801. A compression spring 803 is fixedly connected to the top of the inner side of the limiting sleeve 802. A slider 804 is fixedly connected to the end of the compression spring 803 away from the limiting sleeve 802. A top post 805 is fixedly connected to the bottom of the slider 804. Its function is that during the shearing process, the top post 805 can effectively fix the sheared part, ensure the shearing accuracy, and reduce labor costs.
[0037] A gasket 9 is fixedly connected to the end of the top post 805 away from the slider 804. There are four top posts 805 and four gaskets 9, arranged in pairs along the vertical central axis of the connecting plate 404. Their function is to enhance the fixing force of the top post 805 on the workpiece being sheared, ensure no displacement during the shearing process, further improve the shearing accuracy and efficiency, and ensure product quality.
[0038] The circumferential surface of the slider 804 is slidably connected to the inner circumferential surface of the limiting sleeve 802. There are four sliders 804 and four limiting sleeves 802, arranged in pairs, distributed along the vertical central axis of the connecting plate 404. Their function is to ensure that the slider 804 slides stably during the shearing process, avoids deviation, further optimizes the shearing accuracy, extends the service life of the equipment, and improves the overall production efficiency.
[0039] In this embodiment, the operator first places the product on the injection molded part placement plate 407, and then activates the hydraulic telescopic cylinder 403 via the control panel 3. The telescopic end of the hydraulic telescopic cylinder 403 drives the connecting plate 404 to move downward. The connecting plate 404 drives the blade holder connecting plate 405 and the shearing blade 406 to move downward synchronously. At the same time, the slider 804 slides within the limiting sleeve 802, and the top column 805 and the gasket 9 apply a fixing force to the part being sheared, ensuring that the part being sheared will not be displaced during the shearing process. This achieves precise shearing of the injection molded part placed on the injection molded part placement plate 407.
[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A shearing device for injection molded parts, characterized in that, The product includes a finished product storage box (1), a processing panel (2) is fixedly connected to the top of the finished product storage box (1), a control panel (3) is provided in the finished product storage box (1), and a shearing device (4) is provided on the top of the processing panel (2). The shearing device (4) includes a support plate (401), which is fixedly connected to the top of the processing panel (2). A mounting plate (402) is fixedly connected to the top of the support plate (401). A hydraulic telescopic cylinder (403) is provided on the top of the mounting plate (402). A connecting plate (404) is fixedly connected to the telescopic end of the hydraulic telescopic cylinder (403). A knife holder connecting plate (405) is fixedly connected to the bottom of the connecting plate (404). A shearing blade (406) is fixedly connected to the bottom of the knife holder connecting plate (405). An injection molded part placement plate (407) is provided on the top of the processing panel (2). A sliding groove (408) is provided on the side of the support plate (401). A sliding plate (409) is fixedly connected to the side of the connecting plate (404).
2. The injection molding part shearing device according to claim 1, characterized in that, A buffer spring (5) is fixedly connected to the top of the chute (408), and a buffer pad (6) is fixedly connected to the end of the buffer spring (5) away from the support plate (401). A material discharge hole (7) is opened on the top of the processing panel (2).
3. The injection molding part shearing device according to claim 2, characterized in that, The side of the slide plate (409) is slidably connected to the inner side of the slide groove (408), and the circumferential surface of the telescopic column of the hydraulic telescopic cylinder (403) is slidably connected to the circumferential surface of the mounting plate (402).
4. The injection molding part shearing device according to claim 3, characterized in that, The hydraulic telescopic cylinder (403), slide plate (409), buffer spring (5) and buffer pad (6) are provided in two quantities and are symmetrically distributed along the vertical central axis of the support plate (401).
5. The injection molding part shearing device according to claim 4, characterized in that, The bottom of the buffer pad (6) is located on the displacement trajectory of the top of the slide plate (409), and the interior of the discharge hole (7) penetrates the interior of the finished product storage box (1).
6. The injection molding part shearing device according to claim 5, characterized in that, The side of the connecting plate (404) is provided with a fixing device (8), the fixing device (8) includes a fixing connecting plate (801), a limiting sleeve (802) is fixedly connected to the side of the fixing connecting plate (801), a compression spring (803) is fixedly connected to the top of the inner side of the limiting sleeve (802), a slider (804) is fixedly connected to the end of the compression spring (803) away from the limiting sleeve (802), and a top post (805) is fixedly connected to the bottom of the slider (804).
7. A shearing device for injection molded parts according to claim 6, characterized in that, A gasket (9) is fixedly connected to the end of the top post (805) away from the slider (804). The number of top posts (805) and gaskets (9) is set to four, in pairs, distributed along the vertical central axis of the connecting plate (404).
8. A shearing device for injection molded parts according to claim 7, characterized in that, The circumferential surface of the slider (804) is slidably connected to the inner circumferential surface of the limiting sleeve (802). The number of sliders (804) and limiting sleeves (802) is set to four, in pairs, distributed along the vertical central axis of the connecting plate (404).
Citation Information
Patent Citations
Injection molded part shearing device
CN221809380U