Fireproof door core plate shearing device
The accuracy of fireproof door core panel cutting is ensured by a hydraulically driven guiding device and clamping assembly, and automatic waste disposal is achieved through a waste collection bin. This solves the problems of deviation and inconvenient waste disposal in existing devices, and improves processing efficiency and environmental cleanliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-06
AI Technical Summary
Existing fire door core panel cutting devices are prone to deviation during cutting, resulting in inaccurate dimensions and inconvenient waste disposal, affecting the working environment and safety.
A shearing device driven by a hydraulic cylinder was designed, equipped with a guiding device and a clamping assembly to ensure shearing accuracy, and a waste collection box was set up for automatic waste disposal.
It achieves accurate cutting dimensions and timely collection of waste materials, improves processing efficiency and the cleanliness of the working environment, and ensures operational safety.
Smart Images

Figure CN223971775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door processing technology, and in particular to a fire door core panel shearing device. Background Technology
[0002] Fire-resistant door core panels, as the core filling material of fire doors, effectively slow the spread of fire and prevent heat transfer during a fire, buying precious time for escape and rescue. Therefore, the production and processing of fire-resistant door core panels are crucial. In the production process, shearing is a critical step, and its quality directly affects the dimensional accuracy of the fire-resistant door core panel and the subsequent processing results.
[0003] However, existing fire door core panel cutting devices have some problems. For example, they are prone to misalignment during cutting, leading to inaccurate cutting dimensions and affecting the quality of the fire door core panels. Furthermore, the cutting process generates a large amount of waste. If this waste is not collected and disposed of promptly and effectively, it will not only affect the cleanliness of the working environment but may also pose a threat to the safety of operators. Simultaneously, the accumulation of waste may also obstruct the operation of the device, reducing cutting efficiency. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fireproof door core panel shearing device. This device automatically clamps the fireproof door core panel, ensuring no displacement during the shearing process and guaranteeing the accuracy of the shearing dimensions. Furthermore, a waste collection bin is included to promptly collect and dispose of waste generated during the shearing process.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A fireproof door core panel shearing device includes a workbench, a gantry frame fixedly installed at the upper end of the workbench, a hydraulic cylinder fixedly installed at the upper end of the gantry frame, a vertical rod fixedly installed at the telescopic end of the hydraulic cylinder, and a shearing blade fixedly installed at the lower end of the vertical rod.
[0007] A horizontal plate is fitted onto the vertical rod, and two sliding cylinders are symmetrically fixedly installed at the lower end of the horizontal plate. A pressing assembly for pressing and fixing the door core panel is provided on the sliding cylinder.
[0008] The workbench has a waste collection trough in the middle, a waste outlet at the upper end of the waste collection trough, and a waste collection box is fixedly installed inside the waste collection trough.
[0009] Preferably, the clamping assembly includes a slide rod slidably connected inside the slide cylinder, a pressure plate is fixedly installed at the lower end of the slide rod, and a spring is provided inside the slide cylinder, with both ends of the spring fixedly connected to the cross plate and the slide rod, respectively.
[0010] Preferably, the lower end of the pressure plate is provided with a sliding groove, and two unfolding plates are symmetrically arranged inside the sliding groove. A fixed seat is fixedly installed on the side wall of the sliding cylinder, and a rotating arm is provided between the fixed seat and the two unfolding plates. The two ends of the rotating arm are rotatably connected to the unfolding plate and the fixed seat, respectively.
[0011] Preferably, the unfolding plate is integrally formed from a dovetail structure and a rectangular plate.
[0012] Preferably, two guide rods are fixedly installed at the upper end of the shearing blade, and the upper ends of the guide rods pass through the gantry frame and are slidably connected to it.
[0013] Preferably, the waste outlet is located directly below the shearing blade.
[0014] This utility model has the following beneficial effects:
[0015] The shearing blade is slidably connected to the gantry frame via a guide rod. When the hydraulic cylinder pushes the vertical rod to move the shearing blade downwards, the guide rod can provide stable guidance for the shearing blade, ensuring that the shearing blade moves along the predetermined straight trajectory, avoiding deviation during the shearing process, thereby ensuring the accuracy of the shearing dimensions and improving the shearing precision of the fireproof door core panel.
[0016] The clamping assembly firmly clamps the fireproof door core panel before shearing. The sliding rod inside the sliding cylinder can adaptively adjust according to the thickness of the door core panel, and with the elasticity of the spring, the pressure plate always fits tightly against the surface of the door core panel. At the same time, the unfolding plate at the lower end of the pressure plate can automatically unfold under the action of the rotating arm, further increasing the contact area with the door core panel, enhancing the clamping effect, effectively preventing the door core panel from shifting during shearing, and further ensuring shearing accuracy.
[0017] After shearing, the cut waste falls directly into the waste collection bin within the waste collection trough through the waste inlet, achieving automatic waste collection and preventing waste from accumulating on the workbench, thus maintaining a clean working environment. The waste collection bin can be easily removed from the waste collection trough, facilitating centralized processing of the collected waste, such as recycling or disposal, thereby improving waste processing efficiency. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a fireproof door core panel shearing device proposed in this utility model;
[0019] Figure 2 This is a cross-sectional view of a fireproof door core panel shearing device proposed in this utility model;
[0020] Figure 3 This is a cross-sectional view of the clamping component of a fireproof door core panel shearing device proposed in this utility model.
[0021] In the diagram: 1. Workbench, 2. Waste collection box, 3. Gantry, 4. Hydraulic cylinder, 5. Guide rod, 6. Horizontal plate, 7. Slide cylinder, 8. Pressure plate, 9. Unfolding plate, 10. Shearing blade, 11. Rotating arm, 12. Fixed seat, 13. Vertical rod, 14. Waste outlet, 15. Slide rod, 16. Spring. Detailed Implementation
[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed by a fireproof door core panel cutting device, and its component layout may also be more complex.
[0024] Some exemplary embodiments of the present invention have been described for illustrative purposes. It should be understood that the present invention may be implemented in other ways not specifically shown in the accompanying drawings.
[0025] Reference Figures 1-3 A fireproof door core panel shearing device includes a workbench 1, a gantry frame 3 fixedly installed on the upper end of the workbench 1, a hydraulic cylinder 4 fixedly installed on the upper end of the gantry frame 3, a vertical rod 13 fixedly installed on the telescopic end of the hydraulic cylinder 4, a shearing blade 10 fixedly installed on the lower end of the vertical rod 13, and two guide rods 5 fixedly installed on the upper end of the shearing blade 10. The upper end of the guide rods 5 passes through the gantry frame 3 and is slidably connected to it to ensure that the shearing blade 10 moves smoothly.
[0026] A horizontal plate 6 is fitted onto the vertical rod 13. Two sliding cylinders 7 are symmetrically fixedly installed at the lower end of the horizontal plate 6. A pressing assembly for pressing and fixing the door core panel is provided on the sliding cylinder 7. The pressing assembly includes a sliding rod 15 slidably connected inside the sliding cylinder 7. A pressure plate 8 is fixedly installed at the lower end of the sliding rod 15. A spring 16 is provided inside the sliding cylinder 7. The two ends of the spring 16 are fixedly connected to the horizontal plate 6 and the sliding rod 15 respectively. Under the action of the spring 16, the sliding rod 15 inside the sliding cylinder 7 can adaptively adjust according to the fireproof door core panel of different thicknesses to ensure that the pressure plate 8 can always press tightly on the door core panel, prevent the door core panel from shifting during the shearing process, and ensure the shearing accuracy.
[0027] The lower end of the pressure plate 8 is provided with a sliding groove, and two unfolding plates 9 are symmetrically arranged inside the sliding groove. The unfolding plates 9 are integrally formed with a dovetail structure and a rectangular plate. A fixed seat 12 is fixedly installed on the side wall of the sliding cylinder 7. A rotating arm 11 is provided between the fixed seat 12 and the two unfolding plates 9. The two ends of the rotating arm 11 are rotatably connected to the unfolding plate 9 and the fixed seat 12 respectively.
[0028] A waste collection trough is provided in the middle of the workbench 1, and a waste outlet 14 is provided at the upper end of the waste collection trough. The waste outlet 14 is located directly below the shearing blade 10, and a waste collection box 2 is fixedly installed inside the waste collection trough.
[0029] Working principle:
[0030] When the hydraulic cylinder 4 is working, the telescopic end pushes the vertical rod 13 and the shearing blade 10 downward to shear the door core panel placed on the workbench 1.
[0031] When the shearing blade 10 moves downward, the horizontal plate 6 descends together with the vertical rod 13. The pressure plate 8 first contacts the door core panel. As it continues to descend, the slide rod 15 slides upward in the slide cylinder 7. The spring 16 is compressed. Under the elastic force of the spring 16, the pressure plate 8 presses the door core panel tightly and fixes it to prevent the door core panel from moving during shearing until the shearing blade 10 can completely shear the door core panel.
[0032] During the process of the pressure plate 8 descending to press the door core panel, the dovetail structure of the unfolding plate 9 unfolds outward under the action of the rotating arm 11, further increasing the contact area with the door core panel and enhancing the pressing effect;
[0033] After shearing is completed, the shearing blade 10 is lifted, and the sheared waste material falls from the waste outlet 14 into the waste collection box 2 in the waste collection trough, which facilitates the subsequent centralized processing of waste material and keeps the working environment clean.
[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A fire door core panel shearing apparatus, characterized by: Including the workbench (1), the upper end of the workbench (1) is fixedly installed with a gantry (3), the upper end of the gantry (3) is fixedly installed with a hydraulic oil cylinder (4), the telescopic end of the hydraulic oil cylinder (4) is fixedly installed with a vertical rod (13), the lower end of the vertical rod (13) is fixedly installed with a shearing cutter (10); The vertical rod (13) is sleeved with a horizontal plate (6), the lower end of the horizontal plate (6) is fixedly installed with two slide cylinders (7) in a symmetrical manner, and the slide cylinder (7) is provided with a pressing assembly for door core plate pressing and fixing; The middle part of the workbench (1) is provided with a waste collecting groove, the upper end of the waste collecting groove is provided with a waste port (14), and the inside of the waste collecting groove is fixedly installed with a waste collecting box (2).
2. A fire door core panel shearing device as claimed in claim 1 wherein, The pressing assembly comprises a sliding rod (15) slidably connected in the slide cylinder (7), a pressing plate (8) fixedly installed at the lower end of the sliding rod (15), a spring (16) arranged in the slide cylinder (7), and the two ends of the spring (16) are fixedly connected with the horizontal plate (6) and the sliding rod (15).
3. A fire door core panel shearing apparatus as claimed in claim 2, wherein, The lower end of the pressing plate (8) is provided with a sliding groove, two unfolding plates (9) are symmetrically arranged in the sliding groove, a fixing seat (12) is fixedly installed on the side wall of the slide cylinder (7), a rotating arm (11) is arranged between the fixing seat (12) and the two unfolding plates (9), and the two ends of the rotating arm (11) are rotatably connected with the unfolding plate (9) and the fixing seat (12).
4. A fire door core panel shearing apparatus as claimed in claim 3, wherein, The unfolding plate (9) is integrally formed by a dovetail structure and a rectangular plate.
5. A fire door core panel shearing apparatus as claimed in claim 1, wherein, The upper end of the shearing cutter (10) is fixedly installed with two guide rods (5), the upper end of the guide rod (5) penetrates through the gantry (3) and is slidably connected with the gantry (3).
6. A fire door core panel shearing device as claimed in claim 1, wherein, The waste port (14) is located directly below the shearing cutter (10).