Opening structure of a cutting machine guard door

Abstract

The utility model provides a kind of opening structure of cutting machine protective door belongs to protective door technical field.The utility model, including rack and the protective cover assembly being set on rack, the protective cover assembly includes three-stage protective cover, two-stage protective cover and primary protective cover, nesting telescopic is realized by the cooperation of slider and slide rail;Through the cooperation of trigger device and limit stop lever, the opening and closing state of protective door is bound with the telescopic movement of three-stage protective cover, avoid the security risk that protective door is not closed and is operated or door is opened by mistake in operation caused by artificial operation;The whole opening structure only uses the telescopic movement of three-stage protective cover as power input, realizes the automatic control of protective door using the potential energy of the rotation of push plate, telescopic rod transmission and elastic reset piece, without configuring additional motor, air cylinder and other power device, not only simplify the overall structure, reduce manufacturing cost, also reduce the shutdown risk caused by electrical components or pneumatic component failure, improve the operation reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of protective doors, and more specifically, to an opening structure for a protective door for a cutting machine. Background Technology

[0002] In industrial production, cutting machines are widely used for processing various materials. To ensure operator safety and reduce hazards during the cutting process, safety doors are an important component of cutting machines.

[0003] The existing protective door opening structure of cutting machines lacks automation. Most protective doors require manual operation to open and close, and additional power devices such as motors and cylinders are needed. When cutting operations are frequent, operators may be distracted and make mistakes in the operation sequence, such as starting the cutting machine without closing the door. This causes dangerous factors such as cutting debris, strong light, and high temperature to fly out and injure the operator. In addition, the speed of manual operation of the protective door is relatively slow, which affects production efficiency and cannot adapt to the production rhythm of modern industrial automation and high efficiency.

[0004] How to invent an opening structure for a cutting machine protective door to solve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an opening structure for a cutting machine protective door, aiming to solve the problems mentioned in the background.

[0006] This utility model is implemented as follows:

[0007] This utility model provides an opening structure for a cutting machine protective door, including a frame and a protective cover assembly mounted on the frame. The protective cover assembly includes a three-level protective cover, a two-level protective cover, and a first-level protective cover, which are nested and extendable through the cooperation of a slider and a slide rail. A protective door is provided at the front end of the three-level protective cover. A support frame is provided on the frame, and a limit stop bar is installed on the support frame. A triggering device is provided on the three-level protective cover. The triggering device opens and closes the protective door through cooperation with the limit stop bar. A connecting plate is fixedly installed on the inner side wall of the protective door.

[0008] Preferably, the triggering device includes two sets of positioning frames, a telescopic rod, a lever, and a mounting base. The mounting base is fixed on the side wall of the three-level protective cover, and the positioning frames are fixedly installed on the inner side wall of the three-level protective cover. A rotating shaft block is rotatably connected inside the mounting base. One end of the rotating shaft block is fixedly connected to the protective door through a connecting plate. The lever is fixedly installed on the rotating shaft block. When the three-level protective cover moves, the lever cooperates with the corresponding limit stop to realize the opening and closing of the protective door.

[0009] Preferably, one end of the telescopic rod is hinged to the positioning frame, and the other end is hinged to the lever plate.

[0010] Preferably, the lower end of the lever is provided with a limiting groove that matches the limiting stop bar.

[0011] Preferably, the telescopic rod is equipped with an elastic reset element, and the protective door is in the open state when not in operation.

[0012] Preferably, the protective door is provided with an observation window.

[0013] The beneficial effects of this utility model are:

[0014] By coordinating the triggering device and the limit stop, the opening and closing state of the protective door is linked to the extension and retraction movement of the three-level protective cover. When the three-level protective cover extends to the working position, the lever contacts the limit stop, triggering the protective door to close automatically. When the protective cover retracts and resets, the elastic reset component drives the protective door to open automatically. This mechanism avoids safety hazards such as the protective door not closing before operation or accidental opening during operation caused by human operation, ensuring that the protective door is always in a closed protective state during the cutting process, effectively blocking debris splashing, high temperature radiation and noise leakage, and significantly improving the safety of equipment operation.

[0015] The entire opening structure uses only the telescopic movement of the three-stage protective cover as the power input. It utilizes the potential energy of the rotating toggle plate, telescopic rod transmission, and elastic reset component to achieve automatic control of the protective door. There is no need to configure additional motors, cylinders, or other power devices. This not only simplifies the overall structure and reduces manufacturing costs, but also reduces the risk of downtime due to failure of electrical components or pneumatic parts, thereby improving the operational reliability and maintenance convenience of the equipment.

[0016] In non-operational states, the protective door remains open due to the elastic reset mechanism, facilitating quick loading and unloading of workpieces by operators. During operation, it automatically closes as the protective cover extends, requiring no manual intervention. After operation is completed, it automatically opens as the protective cover retracts, eliminating the need for manual opening and closing. This design reduces auxiliary operation time, optimizes the human-machine interaction process, and is particularly suitable for the continuous operation requirements of automated production lines, effectively improving production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation position of the limit stop bar of this utility model;

[0021] Figure 4 This is a schematic diagram of the triggering device structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the protective door of this utility model when it is opened;

[0023] Figure 6 This is a schematic diagram of the left-side structure of this utility model;

[0024] Figure 7 This is the utility model Figure 6 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Frame; 2. Level 3 protective cover; 3. Level 2 protective cover; 4. Level 1 protective cover; 5. Protective door; 6. Positioning frame; 7. Telescopic rod; 8. Paddle plate; 9. Mounting base; 11. Limiting stop bar; 51. Observation window; 52. Connecting plate; 81. Limiting groove; 91. Rotating shaft block; 111. Support frame. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example, refer to Figures 1-4 An opening structure for a cutting machine protective door includes a frame 1 and a protective cover assembly mounted on the frame 1. The protective cover assembly includes a third-level protective cover 2, a second-level protective cover 3, and a first-level protective cover 4, which are nested and extendable through the cooperation of a slider and a slide rail. A protective door 5 is provided at the front end of the third-level protective cover 2. A support frame 111 is provided on the frame 1, and a limit stop bar 11 is installed on the support frame 111. A triggering device is provided on the third-level protective cover 2. The triggering device opens and closes the protective door 5 by cooperating with the limit stop bar 11. When the third-level protective cover 2 extends to the working position, the lever 8 will inevitably contact the limit stop bar 11, forcibly triggering the protective door 5 to close. When the protective cover retracts, the contact is released, and the triggering door opens. A connecting plate 52 is fixedly installed on the inner side wall of the protective door 5.

[0028] It should be noted that the protective door 5 is equipped with an observation window 51, which is made of high-strength transparent materials such as tempered glass. When the protective door 5 is closed, the operator can monitor the cutting process without opening the door, thus balancing safety and operability.

[0029] Reference Figures 3-7 The triggering device includes two sets of positioning frames 6, telescopic rods 7, a lever 8, and a mounting base 9. The mounting base 9 is fixed on the side wall of the three-level protective cover 2, and the positioning frames 6 are fixedly installed on the inner side wall of the three-level protective cover 2. A rotating shaft block 91 is rotatably connected inside the mounting base 9. One end of the rotating shaft block 91 is fixedly connected to the protective door 5 through a connecting plate 52. The lever 8 is fixedly installed on the rotating shaft block 91. When the three-level protective cover 2 moves, the lever 8 cooperates with the corresponding limit stop 11 to realize the opening and closing of the protective door 5. When the three-level protective cover 2 moves forward, the lever 8 is blocked by the stop and rotates around the shaft block, thereby driving the protective door 5 to rotate and realizing the conversion of the motion mode.

[0030] Furthermore, one end of the telescopic rod 7 is hinged to the positioning frame 6, and the other end is hinged to the lever plate 8.

[0031] It should be noted that: the lower end of the lever 8 is provided with a limiting groove 81 that matches the limiting stop 11. The lever 8 moves with the three-level protective cover 2. The function of the limiting groove 81 at its lower end is to ensure that the lever 8 does not slip or deviate when it contacts the stop. After the stop is embedded in the groove, it can stably apply rotational force to the lever 8, avoiding trigger failure due to vibration or impact, and ensuring the reliability of the closing action. The telescopic rod 7 is provided with an elastic reset component. When not in operation, the protective door 5 is in the open state. When not in operation, the reset component is in the natural state, pushing the lever 8 to maintain the initial angle. At this time, the protective door 5 is in the open state. When the lever 8 is pressed and rotated by the stop, the reset component is compressed (stores elastic potential energy). When the protective cover retracts and the stop is disengaged, the reset component releases potential energy, pushing the lever 8 to rotate in the opposite direction and reset, thereby driving the protective door 5 to open automatically. The automatic opening and reset of the protective door 5 can be achieved without external force, ensuring that the protective door 5 can be reliably opened after the operation is completed, making it convenient to pick up and put down the workpiece.

[0032] The working principle of the opening structure of the cutting machine protective door is as follows: When the cutting machine starts operation, the drive mechanism (existing technology, not described in detail) drives the third-level protective cover 2 to extend forward along the slide rail (sliding outside the second-level protective cover 3). As the third-level protective cover 2 moves, the triggering device installed on its side wall moves synchronously. When the third-level protective cover 2 extends to the preset cutting position, the limiting groove 81 at the lower end of the lever 8 in the triggering device will contact the limiting stop bar 11 fixed on the support frame 111 on the frame 1. The limiting stop bar 11 is embedded in the limiting groove 81, forming a block on the lever 8.

[0033] Since the lever 8 is fixed on the rotating shaft block 91 of the mounting base 9, under the continuous forward thrust of the three-level protective cover 2, the lever 8 rotates with the rotating shaft block 91 as the fulcrum (overcoming the pre-tightening force of the elastic reset component inside the telescopic rod 7). At this time, the lever 8 pulls the positioning frame 6 through the hinged telescopic rod 7, and the positioning frame 6 is fixed on the inner side wall of the three-level protective cover 2. Then, through mechanical linkage, the connecting plate 52 of the protective door 5 moves. The protective door 5 rotates around the rotating connection with the three-level protective cover 2, gradually closing from the open state when not in operation, and finally completely covering the front opening of the three-level protective cover 2, realizing the closed protection of the cutting area.

[0034] During operation, the protective door 5 remains closed, and the operator can monitor the cutting situation through the observation window 51. When the cutting is completed, the three-level protective cover 2 retracts and resets under the drive mechanism. The lever 8 moves away from the limit stop bar 11 along with the three-level protective cover 2. The limit stop bar 11 disengages from the limit groove 81, and the blocking force of the lever 8 disappears. At this time, the elastic reset component (such as a spring) inside the telescopic rod 7 releases its elastic force, pushing the lever 8 to rotate in the opposite direction and reset. At the same time, the protective door 5 rotates in the opposite direction through the hinge relationship between the telescopic rod 7 and the positioning frame 6, and finally returns to the open state when not in operation, which is convenient for picking up and putting down workpieces.

[0035] The entire process requires no additional power source. It achieves automatic closing when the protective door 5 extends and automatic opening when it retracts through the telescopic movement of the three-level protective cover 2 and the mechanical triggering of the limit stop bar 11. This ensures safety protection during operation, simplifies the operation process when not in operation, and improves the automation adaptability of the equipment.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" 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, 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An opening structure for a cutting machine protective door, comprising a frame (1) and a protective cover assembly mounted on the frame (1), characterized in that, The protective cover assembly includes a three-level protective cover (2), a two-level protective cover (3) and a first-level protective cover (4), which are nested and telescopic through the cooperation of the slider and the slide rail. The front end of the three-level protective cover (2) is provided with a protective door (5). A support frame (111) is provided on the frame (1). A limit stop bar (11) is installed on the support frame (111). A triggering device is provided on the three-level protective cover (2). The triggering device opens and closes the protective door (5) through cooperation with the limit stop bar (11). A connecting plate (52) is fixedly installed on the inner side wall of the protective door (5).

2. The opening structure of a cutting machine protective door according to claim 1, characterized in that, The triggering device includes two sets of positioning frames (6), telescopic rods (7), levers (8) and mounting bases (9). The mounting bases (9) are fixed on the side wall of the three-level protective cover (2). The positioning frames (6) are fixedly installed on the inner side wall of the three-level protective cover (2). A rotating shaft block (91) is rotatably connected inside the mounting base (9). One end of the rotating shaft block (91) is fixedly connected to the protective door (5) through a connecting plate (52). The levers (8) are fixedly installed on the rotating shaft block (91). When the three-level protective cover (2) moves, the levers (8) cooperate with the corresponding limit stop (11) to realize the opening and closing of the protective door (5).

3. The opening structure of a cutting machine protective door according to claim 2, characterized in that, One end of the telescopic rod (7) is hinged to the positioning frame (6), and the other end is hinged to the dial plate (8).

4. The opening structure of a cutting machine protective door according to claim 2, characterized in that, The lower end of the lever (8) is provided with a limiting groove (81) that matches the limiting stop (11).

5. The opening structure of a cutting machine protective door according to claim 2, characterized in that, The telescopic rod (7) is equipped with an elastic reset component inside, and the protective door (5) is in the open state when not in operation.

6. The opening structure of a cutting machine protective door according to claim 1, characterized in that, The protective door (5) is provided with an observation window (51).

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