Automatic protective gate device for laser cutting machine

Abstract

The utility model relates to the technical field of laser cutting machines, in particular to an automatic protective gate device of a laser cutting machine, which comprises a casing front cover, a lifting driving mechanism is mounted on the inner side wall of the casing front cover, a protective gate is fixedly connected to the bottom of the lifting driving mechanism, and connecting plates are fixedly connected to two sides of the protective gate. A linear bearing is installed on the inner side of the connecting plate and slidably arranged on an optical shaft in a sleeving mode, the two ends of the optical shaft are fixedly connected with the machine shell front cover through fixing bases, and a cleaning mechanism is arranged on the optical shaft. The cleaning mechanism comprises a cleaning ring rotationally connected to the connecting plate, a brush is arranged on the inner wall of the cleaning ring, a driven bevel gear is fixedly arranged on the outer wall of the cleaning ring, one side of the driven bevel gear is meshed with a driving bevel gear, and a connecting shaft is fixedly connected to the driving bevel gear; according to the automatic protection gate device of the laser cutting machine, foreign matters attached to the optical axis can be swept away, and therefore the problems of blockage, abnormal sound and the like caused by abrasion of the optical axis can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, specifically to an automatic protective gate device for laser cutting machines. Background Technology

[0002] The automatic protective gate device of a laser cutting machine is an important safety device, usually made of metal sheet, possessing a certain strength and rigidity to effectively block laser light and spatter. Its shape and size are designed according to the working area and structure of the laser cutting machine, commonly including flat panel and roller shutter types. Common driving methods include motor drive and cylinder drive. Existing protective gate devices using cylinder drive install optical shafts on both sides of the gate to guide its movement. However, during the cutting process, some spatter adheres to the optical shaft, causing wear on its surface. Over time, this can lead to problems such as jamming and abnormal noise. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an automatic protective gate device for laser cutting machines, which solves the technical problems of jamming and abnormal noise caused by optical axis wear.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automatic protective gate device for a laser cutting machine, including a front cover of the machine housing, a lifting drive mechanism installed on the inner side wall of the front cover of the machine housing, a protective gate fixedly connected to the bottom of the lifting drive mechanism, connecting plates fixedly connected to both sides of the protective gate, a linear bearing installed on the inner side of the connecting plate, the linear bearing slidingly sleeved on the optical shaft, both ends of the optical shaft being fixedly connected to the front cover of the machine housing through fixed seats, and a cleaning mechanism provided on the optical shaft;

[0005] The cleaning mechanism includes a cleaning ring rotatably connected to a connecting plate. A brush is provided on the inner wall of the cleaning ring. A driven bevel gear is fixed on the outer wall of the cleaning ring. A driving bevel gear meshes with one side of the driven bevel gear. A connecting shaft is fixedly connected to the driving bevel gear. The connecting shaft is rotatably connected to one side of the connecting plate through a connecting seat. A spur gear is fixedly connected to one end of the connecting shaft. A gear plate frame fixedly connected to the front cover of the housing meshes with one side of the spur gear.

[0006] Preferably, the lifting drive mechanism includes a cylinder installed on the inner side wall of the front cover of the housing, a connecting block installed on the telescopic shaft of the cylinder, the connecting block being fixedly connected to the side wall of the protective gate, and a baffle fixedly installed on the connecting block, the baffle being located in front of the telescopic shaft of the cylinder.

[0007] Preferably, a slider is fixed on the cylinder, and the slider is slidably disposed in a groove opened on the inner side wall of the baffle.

[0008] Preferably, two sets of limit switches are installed on the inner side wall of the front cover of the housing near the optical axis.

[0009] Preferably, two baffles are fixed on the inner sidewall of the front cover of the housing, and the two baffles are respectively located in front of the two optical axes.

[0010] Preferably, the inner walls of the front cover of the housing and the protective gate are provided with reinforcing ribs.

[0011] By means of the above technical solution, this utility model provides an automatic protective gate device for laser cutting machines, which has at least the following beneficial effects:

[0012] 1. The automatic protective gate device for laser cutting machines, by setting up a cleaning mechanism, when the protective gate is opened, the cleaning ring rotates due to the meshing action of the column gear and the toothed plate frame. The brush on the inner side of the cleaning ring can sweep away foreign objects attached to the optical axis, thereby avoiding problems such as jamming and abnormal noise caused by optical axis wear.

[0013] 2. The automatic protective gate device for the laser cutting machine, by setting up a baffle, can protect the extension shaft of the cylinder during the extension and retraction movement of the cylinder, thereby preventing damage to the cylinder. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the lifting drive mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting plate, optical axis, and cleaning mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the cleaning mechanism on the optical axis of this utility model.

[0019] Figure label:

[0020] 1. Front cover of the housing; 2. Lifting drive mechanism; 201. Cylinder; 202. Connecting block; 203. Baffle; 204. Slider; 3. Protective gate; 4. Connecting plate; 5. Linear bearing; 6. Optical shaft; 7. Fixed seat; 8. Cleaning mechanism; 801. Cleaning ring; 802. Driven bevel gear; 803. Driven bevel gear; 804. Connecting shaft; 805. Connecting seat; 806. Spur gear; 807. Gear plate frame; 9. Limit switch; 10. Baffle. Detailed Implementation

[0021] 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.

[0022] Laser cutting machines are essential equipment in modern manufacturing, using high-energy laser beams to ablate materials and achieve precise cutting. However, during the cutting process, especially when cutting metal, high-temperature molten slag, spatter, fumes, and light radiation are generated, posing safety hazards to operators. Therefore, the installation of a protective gate 3 is a necessary safety measure. The protective gate 3 is usually made of metal sheet, possessing a certain strength and rigidity, and can effectively block laser beams and spatter.

[0023] Example 1:

[0024] Due to the technical defects of existing technology, such as jamming and abnormal noise caused by wear of the optical axis 6, please refer to... Figures 1-4 This embodiment provides an automatic protective gate device for a laser cutting machine, which can sweep away foreign objects attached to the optical axis 6, thereby avoiding problems such as jamming and abnormal noise caused by wear of the optical axis 6. It includes a front cover 1 of the machine housing, a lifting drive mechanism 2 installed on the inner wall of the front cover 1, a protective gate 3 fixedly connected to the bottom of the lifting drive mechanism 2, connecting plates 4 fixedly connected to both sides of the protective gate 3, and linear bearings 5 ​​installed on the inner side of the connecting plates 4. The linear bearings 5 ​​are slidably sleeved on the optical axis 6, and both ends of the optical axis 6 are fixedly connected to the front cover 1 of the machine housing via fixed seats 7. A cleaning mechanism 8 is provided on the optical axis 6. In use, the protective gate 3 separates the inside and outside of the laser cutting machine, so that the laser and spatter generated during cutting will not cause injury to the operator. At the same time, the operation of the protective gate 3 can be controlled by the lifting drive mechanism 2 for convenient operation. When the protective gate 3 moves up and down, the optical axis 6 and the linear bearings 5 ​​guide the protective gate 3, ensuring that the protective gate 3 moves up and down in the correct direction.

[0025] During the cutting process, some spatter will adhere to the optical axis 6, causing wear on its surface. Prolonged use may lead to problems such as jamming and abnormal noise. For solutions to this problem, please refer to [link / reference needed]. Figure 4The cleaning mechanism 8 includes a cleaning ring 801 rotatably connected to the connecting plate 4. A brush is provided on the inner wall of the cleaning ring 801. A driven bevel gear 802 is fixedly mounted on the outer wall of the cleaning ring 801. A driving bevel gear 803 meshes with one side of the driven bevel gear 802. A connecting shaft 804 is fixedly connected to the driving bevel gear 803. The connecting shaft 804 is rotatably connected to one side of the connecting plate 4 via a connecting seat 805. A spur gear 806 is fixedly connected to one end of the connecting shaft 804. One side of the spur gear 806 meshes with a component fixed to the front cover 1 of the housing. The toothed plate frame 807 is on the upper part; when the protective gate 3 is opened, the linear bearing 5 is driven to move along the optical axis 6 through the connecting plate 4. At this time, under the meshing action of the spur gear 806 and the toothed plate frame 807, the driving bevel gear 803 can be driven to rotate through the connecting shaft 804. The driving bevel gear 803 drives the cleaning ring 801 to rotate through the meshing action with the driven bevel gear 802. Since the cleaning ring 801 is equipped with a brush on the inner side, the foreign objects attached to the optical axis 6 can be swept away, thereby avoiding problems such as jamming and abnormal noise caused by the wear of the optical axis 6.

[0026] Furthermore, the lifting drive mechanism 2 includes a cylinder 201 installed on the inner side wall of the front cover 1 of the housing. A connecting block 202 is installed on the telescopic shaft of the cylinder 201. The connecting block 202 is fixedly connected to the side wall of the protective gate 3. A baffle 203 is fixedly installed on the connecting block 202. The baffle 203 is located in front of the telescopic shaft of the cylinder 201. When the protective gate 3 is opened or closed, the connecting block 202 can be moved by the air rod. The connecting block 202 can then move the protective gate 3. By setting the baffle 203, the baffle 203 can protect the telescopic shaft of the cylinder 201 when the cylinder 201 is telescopic, thereby preventing damage to the cylinder 201.

[0027] When the connecting block 202 drives the baffle 203 to move, in order to improve the stability of the movement of the baffle 203, a slider 204 is fixed on the cylinder 201. The slider 204 is slidably disposed in a groove opened on the inner side wall of the baffle 203. Through the cooperation of the slider 204 and the groove, the baffle 203 can remain stable during movement.

[0028] When the protective gate 3 is opened or closed, the position of the protective gate 3 needs to be precisely controlled. For this purpose, two sets of limit switches 9 are installed on the inner side wall of the front cover 1 of the housing near the optical axis 6. When it is open, the position of the protective gate 3 is monitored by the upper set of limit switches 9, and when it is closed, the position of the protective gate 3 is monitored by the lower set of limit switches 9.

[0029] Furthermore, two baffles 10 are fixed on the inner side wall of the front cover 1 of the housing, and the two baffles 10 are respectively located in front of the two optical axes 6; the baffles 10 are used to reduce the amount of splashing material adhering to the optical axes 6.

[0030] Furthermore, reinforcing ribs are provided on the inner walls of the front cover 1 and the protective gate 3; the reinforcing ribs are used to improve the strength of the front cover 1 and the protective gate 3, ensuring that they are not prone to deformation after long-term use.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic safety shutter device for a laser cutting machine comprising a housing front cover (1), characterized in that: The inner side wall of the machine shell front cover (1) is provided with a lifting driving mechanism (2), the bottom of the lifting driving mechanism (2) is fixedly connected with a protective gate (3), the two sides of the protective gate (3) are fixedly connected with connecting plates (4), the inner side of the connecting plate (4) is provided with a linear bearing (5), the linear bearing (5) is slidably sleeved on an optical shaft (6), the two ends of the optical shaft (6) are fixedly connected with the machine shell front cover (1) through fixing seats (7), and the optical shaft (6) is provided with a cleaning mechanism (8). The cleaning mechanism (8) comprises a cleaning ring (801) rotatably connected to the connecting plate (4), a brush is arranged on the inner wall of the cleaning ring (801), a driven bevel gear (802) is fixedly arranged on the outer wall of the cleaning ring (801), a driving bevel gear (803) is engaged on one side of the driven bevel gear (802), a connecting shaft (804) is fixedly connected to the driving bevel gear (803), the connecting shaft (804) is rotatably connected to one side of the connecting plate (4) through a connecting seat (805), a spur gear (806) is fixedly connected to one end of the connecting shaft (804), and a toothed plate frame (807) is fixedly connected to the machine shell front cover (1) on one side of the spur gear (806).

2. The automatic shield door arrangement in relation to a laser cutting machine as claimed in claim 1, characterized in that: The lifting driving mechanism (2) comprises a gas cylinder (201) mounted on the inner side wall of the machine shell front cover (1), a connecting block (202) is mounted on the telescopic shaft of the gas cylinder (201), the connecting block (202) is fixedly connected with the side wall of the protective gate (3), and a baffle cover (203) is fixedly arranged on the connecting block (202) and located in front of the telescopic shaft of the gas cylinder (201).

3. The automatic shield door arrangement in relation to a laser cutting machine according to claim 2, characterized in that: A sliding block (204) is fixedly arranged on the gas cylinder (201) and slidably arranged in a sliding groove formed in the inner side wall of the baffle cover (203).

4. The automatic shield door arrangement in relation to a laser cutting machine as claimed in claim 1, characterized in that: Two groups of limit switches (9) are mounted on the inner side wall of the machine shell front cover (1) near the optical shaft (6).

5. The automatic shield door arrangement in relation to a laser cutting machine as claimed in claim 1, characterized in that: Two baffles (10) are fixedly arranged on the inner side wall of the machine shell front cover (1), and the two baffles (10) are respectively located in front of the two optical shafts (6).

6. The automatic shield door arrangement in relation to a laser cutting machine as claimed in claim 1, characterized in that: The inner side walls of the machine shell front cover (1) and the protective gate (3) are provided with reinforcing ribs. The inner side walls of the machine shell front cover (1) and the protective gate (3) are provided with reinforcing ribs.

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