An automatic cutting machine protective device

By using a hydraulically driven adjustment assembly, electric push rod, and rope system, the cutting machine's cutting blade can be quickly positioned and the safety light curtain can be used for safety protection. This solves the problem of insufficient flexibility in existing devices and improves production efficiency and safety.

CN224425780UActive Publication Date: 2026-06-30GUANGZHOU ZHIHAN TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU ZHIHAN TECHNOLOGY CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-30

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Abstract

This utility model relates to the field of cutting machine technology and discloses an automatic cutting machine protective device, including a machine body. Two hydraulic cylinders are fixedly connected inside the machine body. A connecting plate is fixedly connected to the output end of each hydraulic cylinder. Two sliding columns are fixedly connected to the top of the connecting plate. A top plate is fixedly connected between the tops of the four sliding columns. A cutting assembly is provided at the bottom of the top plate. An adjusting assembly is provided on the outer wall of the top plate. The cutting assembly includes two sliding rods, which are fixedly connected to the outer wall of the top plate. Two sliders are slidably connected to the outer wall of the sliding rods. A mounting plate is fixedly connected between the bottoms of two distant sliders. In this utility model, the electric push rod in the adjusting assembly serves as the main power source. In conjunction with the fixed plate, fixed block, and connecting rod, the telescopic motion of the electric push rod can be converted into the horizontal linear motion of the sliders on the sliding rods. This allows the operator to conveniently and quickly adjust the position of the cutting blade according to the cutting requirements of different products.
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Description

Technical Field

[0001] This utility model relates to the field of cutting machine technology, and in particular to a protective device for an automatic cutting machine. Background Technology

[0002] A polarizing lens is an optical lens that effectively filters polarized light and has wide applications in photography, driving, outdoor activities, and many other fields. Its production process involves several precision steps, among which the precise cutting of the polarizing lens material is a crucial one. Because polarizing lenses require extremely high dimensional accuracy, and different applications result in variations in specifications, efficient, precise, and flexible cutting devices are essential in production to ensure product quality and meet diverse market demands.

[0003] The existing equipment lacks flexibility. It typically allows only limited fixed-position adjustments, making it difficult to conveniently and quickly change the position of the cutting blade according to the cutting requirements of different products. When producing polarizing lenses of various specifications, operators often need to spend a lot of time readjusting the equipment or even changing tooling, which greatly limits the equipment's adaptability to different products, seriously hinders the improvement of production efficiency, and also limits the application scope of the equipment in diversified markets. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a protective device for an automatic cutting machine, aiming to improve the poor flexibility of existing devices. These devices typically only allow for limited fixed-position adjustments, making it difficult to conveniently and quickly change the position of the cutting blade according to the cutting requirements of different products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic cutting machine protective device, comprising a machine body, two hydraulic cylinders fixedly connected inside the machine body, a connecting plate fixedly connected to the output end of the hydraulic cylinders, two sliding columns fixedly connected to the top of the connecting plate, a top plate fixedly connected between the tops of the four sliding columns, a cutting component provided at the bottom of the top plate, and an adjustment component provided on the outer wall of the top plate.

[0006] The cutting assembly includes two sliding rods, which are fixedly connected to the outer wall of the top plate. Two sliders are slidably connected to the outer wall of the sliding rods. A mounting plate is fixedly connected between the bottoms of the two distant sliders. A cutting blade is installed at the bottom of the mounting plate. A fixing assembly is provided inside the mounting plate.

[0007] As a further description of the above technical solution:

[0008] The adjustment assembly includes two fixed plates, which are fixedly connected to the outer wall of the top plate. An electric push rod is fixedly connected to the bottom of the fixed plate, and a fixed block is fixedly connected to the output end of the electric push rod. Two connecting rods are rotatably connected to the outer wall of the fixed block, and the end of the connecting rod away from the fixed block is rotatably connected to the top of the slider.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes multiple knobs, which are rotatably connected inside the mounting plate. A rope is wound around the outer wall of the knob, and a limiting plate is fixedly connected to the end of the rope away from the knob. A locking block is fixedly connected to the side of the limiting plate away from the rope, and a spring is sleeved on the outer wall of the rope.

[0011] As a further description of the above technical solution:

[0012] Two safety light curtains are fixedly connected to the front wall of the machine body, and the two safety light curtains are symmetrically distributed.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the rope is slidably connected to the inside of the mounting plate, and a handle is provided on the top of the knob.

[0015] As a further description of the above technical solution:

[0016] One end of the spring is fixedly connected to the inner wall of the mounting plate, and the other end of the spring is fixedly connected to the limiting plate.

[0017] As a further description of the above technical solution:

[0018] The locking block penetrates the mounting plate and engages with the cutting blade.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the sliding column is slidably connected to the top of the machine body.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the electric push rod in the adjustment assembly serves as the main power source. Together with the fixed plate, fixed block, and connecting rod, it converts the telescopic motion of the electric push rod into the horizontal linear motion of the slider on the slide rod. This allows operators to conveniently and quickly adjust the position of the cutting blade according to the cutting requirements of different products, greatly improving the adaptability of the cutting machine to various products and broadening the application range of the equipment.

[0023] 2. In this utility model, the fixing component utilizes the coordinated operation of a knob, rope, limiting plate, locking block, and spring to achieve rapid installation and disassembly of the cutting blade. Rotating the knob controls the release and retraction of the rope, easily engaging or disengaging the locking block from the cutting blade. When the cutting blade wears out and needs replacement or maintenance, this design significantly reduces downtime and improves equipment efficiency.

[0024] 3. In this utility model, two safety light curtains symmetrically distributed on the front wall of the machine body provide reliable safety protection for operators. Once an object blocks the light emitted and received by the safety light curtains, the control system of the cutting machine will respond quickly and immediately stop the relevant actions, effectively preventing operators from accidentally putting their limbs into the danger zone during the operation of the cutting machine, thus greatly improving the safety of equipment operation. Attached Figure Description

[0025] Figure 1 This is a perspective view of an automatic cutting machine protective device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of a hydraulic cylinder for an automatic cutting machine protection device proposed in this utility model;

[0027] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the cutting blade of an automatic cutting machine protective device proposed in this utility model;

[0029] Figure 5 This is a cross-sectional view of the mounting plate of an automatic cutting machine protective device proposed in this utility model.

[0030] Legend:

[0031] 1. Body; 2. Hydraulic cylinder; 3. Connecting plate; 4. Sliding column; 5. Top plate; 6. Safety light curtain; 7. Sliding rod; 8. Sliding block; 9. Mounting plate; 10. Cutting blade; 11. Fixing plate; 12. Electric push rod; 13. Connecting rod; 14. Knob; 15. Rope; 16. Limiting plate; 17. Locking block; 18. Spring; 19. Fixing block. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-3 This utility model provides an embodiment of an automatic cutting machine protective device, comprising a body 1, which serves as the main load-bearing structure of the entire device, providing the installation foundation and working environment for other components. Two hydraulic cylinders 2 are fixedly connected inside the body 1, providing power. Through the operation of the hydraulic system, the hydraulic cylinders 2 can generate a stable and large thrust. A connecting plate 3 is fixedly connected to the output end of the hydraulic cylinder 2, transmitting the movement of the hydraulic cylinder 2 and causing the sliding column 4 at its top to slide up and down. Two sliding columns 4 are fixedly connected to the top of the connecting plate 3, guiding and restricting the sliding of the connecting plate 3. Simultaneously, the movement of the connecting plate 3 is transmitted to a top plate 5. A top plate 5 is fixedly connected between the tops of the four sliding columns 4, providing the installation foundation for subsequent cutting and adjusting components. A cutting component is installed at the bottom of the top plate 5, sliding up and down under the influence of the top plate 5 to achieve the cutting effect. An adjusting component is installed on the outer wall of the top plate 5, adjusting the position of the cutting component to adapt to different production products.

[0034] Reference Figure 3 The cutting assembly includes two sliding rods 7, which are fixedly connected to the outer wall of the top plate 5. The sliding rods 7 provide guidance and support for the sliding of the slider 8, allowing the slider 8 to slide smoothly on the sliding rods 7, thereby adjusting the position of the slider 8. Two sliders 8 are slidably connected to the outer wall of the sliding rods 7, allowing the sliders 8 to slide smoothly on the sliding rods 7, thereby driving the subsequent mounting plate 9 to slide. The mounting plate 9 is fixedly connected between the bottoms of the two sliders 8, providing the mounting base for the cutting blade 10. Under the action of the sliders 8, the mounting plate 9 slides, further driving the cutting blade 10 to slide, achieving the effect of adjusting the position of the cutting blade 10. The cutting blade 10 is installed at the bottom of the mounting plate 9. The cutting blade 10 is used to cut the production product. The mounting plate 9 has a fixing component inside, which is used to fix the cutting blade 10, achieving the effect of quick installation and removal of the cutting blade 10.

[0035] Reference Figures 1-3The adjustment assembly includes two fixed plates 11, which are fixedly connected to the outer wall of the top plate 5. The fixed plates 11 are fixed to the outer wall of the top plate 5, allowing them to move with the movement of the top plate 5. Simultaneously, the fixed plates 11 provide a supporting foundation for the installation of the electric push rod 12. The electric push rod 12 is fixedly connected to the bottom of the fixed plates 11. The electric push rod 12 is the main power source for the entire adjustment assembly. The electric push rod 12 extends and retracts after ventilation. A fixing block 19 is fixedly connected to the output end of the electric push rod 12. The fixed block 19 is used to transmit the telescopic movement of the electric push rod 12 and to provide an installation position for the connecting rod 13. Two connecting rods 13 are rotatably connected to the outer wall of the fixed block 19. The connecting rods 13 rotate under the push of the fixed block 19, converting the vertical telescopic movement of the fixed block 19 into horizontal linear movement. The end of the connecting rod 13 away from the fixed block 19 is rotatably connected to the top of the slider 8. When the electric push rod 12 moves, it causes the two sliders 8 to slide relative to or away from each other on the outer wall of the slide rod 7.

[0036] Reference Figure 5 The fixing assembly includes multiple knobs 14, which are rotatably connected inside the mounting plate 9. The knobs 14 are the main driving structure of the entire fixing assembly. A rope 15 is wound around the outer wall of each knob 14. When the knob 14 rotates, it causes the rope 15 to wind or unwind, thereby driving the subsequent limiting plate 16 to slide. The end of the rope 15 away from the knob 14 is fixedly connected to the limiting plate 16. The limiting plate 16 is used to limit the locking block 17, preventing it from sliding excessively and detaching from the mounting plate 9. Simultaneously, the limiting plate 16 slides under the influence of the rope 15, causing the locking block 17 to slide. The side of the limiting plate 16 away from the rope 15 is fixed. A locking block 17 is connected, which engages with or disengages from the cutting blade 10 to fix and release the cutting blade 10, facilitating quick installation and removal of the cutting blade 10 from the mounting plate 9. A spring 18 is sleeved on the outer wall of the rope 15 to provide elastic force. When the limiting plate 16 slides under the action of the rope 15, it compresses the spring 18, causing the spring 18 to store potential energy. When the external force disappears, the spring 18 resets, pushing the limiting plate 16 and the locking block 17 to slide, allowing the locking block 17 to quickly engage with the cutting blade 10.

[0037] Reference Figure 1 and Figure 2Two safety light curtains 6 are fixedly connected to the front wall of the machine body 1. The two safety light curtains 6 are symmetrically distributed. When an object blocks the light emitted and received by the safety light curtain 6, the safety light curtain 6 will immediately detect it and transmit the signal to the control system of the cutting machine. The control system will react quickly and stop the relevant actions of the cutting machine to prevent the operator from accidentally putting his / her limbs into the danger zone during the operation of the cutting machine, causing accidental injury.

[0038] Reference Figure 5 The outer wall of the rope 15 is slidably connected to the inside of the mounting plate 9 to ensure that there will be no jamming when the knob 14 is turned to retract or extend the rope 15. The top of the knob 14 is equipped with a handle, which allows for easier and more convenient retraction and extension of the rope 15, thereby enabling adjustment of the working status of the fixed component.

[0039] Reference Figure 5 One end of the spring 18 is fixedly connected to the inner wall of the mounting plate 9, and the other end of the spring 18 is fixedly connected to the limiting plate 16, so that the spring 18 can effectively apply force to the limiting plate 16, push the limiting plate 16 and the locking block 17 to move towards the cutting blade 10, and realize the locking block 17 and the cutting blade 10 to engage and fix.

[0040] Reference Figure 5 The locking block 17 penetrates the mounting plate 9 and engages with the cutting blade 10. This engaging connection method can firmly fix the cutting blade 10 to the bottom of the mounting plate 9. At the same time, when the cutting blade 10 needs to be replaced, the locking block 17 can be easily separated from the cutting blade 10 by operating the fixing component.

[0041] Reference Figure 2 The outer wall of the sliding column 4 is slidably connected to the top of the machine body 1, allowing the sliding column 4 to slide smoothly inside the machine body 1. After receiving power from the hydraulic cylinder 2, it can effectively drive the top plate 5 to slide, thus achieving the cutting operation.

[0042] Working principle: When it is necessary to cut the polarizing mirror during production, the polarizing mirror to be cut is placed between the two cutting blades 10 at the bottom of the top plate 5. Then, the electric push rod 12 is extended and retracted. When the electric push rod 12 extends and retracts, it drives the fixed block 19 to slide up and down. When the fixed block 19 slides up and down, it drives the connecting rod 13 to rotate. The connecting rod 13 transmits the up and down movement of the electric push rod 12 to the slider 8, thereby driving the slider 8 to slide on the outer wall of the slide rod 7, achieving the effect of adjusting the position of the two cutting blades 10. After the position of the two cutting blades 10 is adjusted, the hydraulic cylinder 2 is started. When the hydraulic cylinder 2 is started, it slides up and down through hydraulic movement. When the hydraulic cylinder 2 slides up and down, it drives the connecting plate 3 on its output end to slide up and down. The sliding of the connecting plate 3 drives the sliding column 4 to slide up and down, and the sliding column 4 drives the top plate 5 to slide, thereby driving the cutting blades 10 to slide, realizing the cutting of the polarizing mirror.

[0043] When the cutting blade 10 wears down after long-term use and becomes difficult to quickly cut the polarizer, the knob 14 is turned. When the knob 14 is turned, the rope 15 is wound up. When the rope 15 is wound up, the limiting plate 16 slides, which in turn drives the locking block 17 to slide. At the same time, the spring 18 is compressed. When the locking block 17 is disengaged from the cutting blade 10, the cutting blade 10 can be removed and polished. After polishing the cutting blade 10, the knob 14 is turned and the cutting blade 10 is put back into the mounting plate 9. Then, the knob 14 is released. At this time, the external force disappears, and the spring 18 releases the stored potential energy, thereby pushing the limiting plate 16 and the locking block 17 to slide, so that the locking block 17 re-engages with the cutting blade 10, achieving the effect of fixing the cutting blade 10.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safeguard for an automatic cutting machine comprising a machine body (1), characterized in that: The machine body (1) has two hydraulic cylinders (2) fixedly connected inside. The output end of the hydraulic cylinder (2) is fixedly connected to a connecting plate (3). The top of the connecting plate (3) is fixedly connected to two sliding columns (4). The top of the four sliding columns (4) is fixedly connected to a top plate (5). The bottom of the top plate (5) is provided with a cutting component. The outer wall of the top plate (5) is provided with an adjustment component. The cutting assembly includes two slide rods (7), which are fixedly connected to the outer wall of the top plate (5). Two sliders (8) are slidably connected to the outer wall of the slide rods (7). An installation plate (9) is fixedly connected between the bottoms of the two sliders (8) that are far apart. A cutting blade (10) is installed at the bottom of the installation plate (9). A fixing assembly is provided inside the installation plate (9).

2. A safeguard for an automatic cutting machine according to claim 1, characterized in that: The adjustment assembly includes two fixed plates (11), which are fixedly connected to the outer wall of the top plate (5). An electric push rod (12) is fixedly connected to the bottom of the fixed plate (11), and a fixed block (19) is fixedly connected to the output end of the electric push rod (12). Two connecting rods (13) are rotatably connected to the outer wall of the fixed block (19), and one end of the connecting rod (13) away from the fixed block (19) is rotatably connected to the top of the slider (8).

3. The safeguard for an automatic cutting machine of claim 1 wherein: The fixing assembly includes multiple knobs (14), which are rotatably connected inside the mounting plate (9). A rope (15) is wound around the outer wall of the knob (14). A limiting plate (16) is fixedly connected to one end of the rope (15) away from the knob (14). A locking block (17) is fixedly connected to one side of the limiting plate (16) away from the rope (15). A spring (18) is sleeved on the outer wall of the rope (15).

4. The safeguard for an automatic cutting machine of claim 1 wherein: The front wall of the body (1) is fixedly connected to two safety light curtains (6), and the two safety light curtains (6) are symmetrically distributed.

5. The safeguard for an automatic cutting machine of claim 3 wherein: The outer wall of the rope (15) is slidably connected to the inside of the mounting plate (9), and the knob (14) is provided with a handle on the top.

6. The safeguard for an automatic cutting machine of claim 3 wherein: One end of the spring (18) is fixedly connected to the inner wall of the mounting plate (9), and the other end of the spring (18) is fixedly connected to the limiting plate (16).

7. The safeguard for an automatic cutting machine of claim 3 wherein: The locking block (17) penetrates the mounting plate (9) and engages with the cutting blade (10).

8. The safeguard for an automatic cutting machine of claim 1 wherein: The outer wall of the slide column (4) is slidably connected to the top of the body (1).