Protective structure of profile laser compound machine tool

Abstract

The utility model discloses a section bar laser compound machine tool's protection structure relates to laser compound machine tool technical field, the utility model discloses a bed body is equipped with moving mechanism on the bed body, is equipped with first elevating system and second elevating system on moving mechanism, is equipped with laser cutting mechanism on first elevating system, is equipped with cutting mechanism on second elevating system, the first elevating system with the second elevating system all is equipped with guide rod on, is equipped with two vertical shafts on moving mechanism, two vertical shafts all rotatory connection have sleeve shaft, is equipped with protective cover on sleeve shaft, the lateral wall of sleeve shaft is equipped with spiral groove, and guide rod is cooperated with spiral groove, when guide rod is down, and sleeve shaft and protective cover are around vertical shaft and turn to the shielding state. The utility model does not need to use the drive equipment to drive the protection structure, is favorable to the energy saving.

Description

Technical Field

[0001] This utility model relates to the field of laser composite machine tool technology, and specifically to a protective structure for a profile laser composite machine tool. Background Technology

[0002] Laser composite machine tools are composite machine tools that combine laser cutting and cutting methods, improving their flexibility and adaptability.

[0003] See Figure 12 Currently, the laser composite machine tool includes a bed 1, on which a moving mechanism is provided. The moving mechanism includes a first lifting mechanism and a second lifting mechanism, which are used to adjust the lateral, longitudinal, and vertical positions of the first and second lifting mechanisms. A laser cutting mechanism is mounted on the first lifting mechanism, and a cutting mechanism is mounted on the second lifting mechanism. During laser operation, the first lifting mechanism drives the laser cutting mechanism to move downwards; during cutting operation, the second lifting mechanism drives the cutting mechanism to move downwards.

[0004] The bed 1 is also equipped with a protective structure, which includes a protective door 12. The protective door 12 is slidably mounted on the front side of the bed 1 and is driven to rise and fall by a drive device. During laser operation or cutting operation, the drive device drives the protective door 12 to rise and shield the laser cutting mechanism and the cutting mechanism, preventing workers from being injured by sparks or flying debris during laser operation or cutting operation.

[0005] In the above-mentioned protective structure, the protective door requires a drive device to provide power, which is not conducive to energy conservation. Utility Model Content

[0006] To address the aforementioned shortcomings of existing technologies, this invention proposes a protective structure for a profile laser composite machine tool. This invention eliminates the need for a drive device to operate the protective structure, thus saving energy.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A protective structure for a profile laser composite machine tool includes a bed, a moving mechanism on the bed, a first lifting mechanism and a second lifting mechanism on the moving mechanism, a laser cutting mechanism on the first lifting mechanism and a cutting mechanism on the second lifting mechanism, a guide rod on both the first and second lifting mechanisms, and two vertical shafts on the moving mechanism, each of which is rotatably connected to a sleeve shaft. A protective cover is provided on the sleeve shaft, and a spiral groove is provided on the side wall of the sleeve shaft. The guide rod cooperates with the spiral groove. When the guide rod moves down, the sleeve shaft and the protective cover rotate around the vertical shaft to a blocking state.

[0008] Furthermore, the first lifting mechanism includes a first lifting seat and a first lifting drive component. The first lifting drive component is used to drive the first lifting seat to lift. The first lifting seat is provided with the laser cutting mechanism. The second lifting mechanism includes a second lifting seat and a second lifting drive component. The second lifting drive component is used to drive the second lifting seat to rise and fall. The cutting mechanism is provided on the second lifting seat. Both the first and second lifting seats are equipped with the guide rods.

[0009] Furthermore, the side wall of the sleeve shaft is also provided with a vertical groove, and the bottom of the spiral groove is connected to the top of the vertical groove.

[0010] Furthermore, the top of the vertical shaft is connected to the moving mechanism, the middle of the sleeve shaft is provided with a sleeve hole, the vertical shaft is rotatably engaged with the sleeve hole, and the bottom of the vertical shaft is provided with a fall-prevention part, which abuts against the bottom of the sleeve shaft.

[0011] Furthermore, the anti-fall part adopts a nut, which is threaded to the bottom of the vertical shaft and abuts against the bottom of the sleeve shaft.

[0012] Furthermore, a horizontal axis is provided at the top of the vertical axis, and a mounting plate is provided at the end of the horizontal axis away from the vertical axis. The mounting plate is connected to the moving mechanism.

[0013] Furthermore, a limiting part is provided at the upper part of the vertical shaft to prevent the sleeve shaft from moving upward.

[0014] The beneficial effects of this utility model are: 1. When the first or second lifting mechanism descends, it can drive the guide rod installed with it to descend as well. The guide rod pushes the lower groove wall of the spiral groove on the side wall of the sleeve shaft, so that the sleeve shaft can rotate around the vertical axis. The sleeve shaft drives the protective cover to rotate together, so that the protective cover can shield the laser cutting mechanism and the cutting mechanism. Conversely, when the first or second lifting mechanism rises, it can drive the guide rod installed with it to move upward. The guide rod pushes the upper groove wall of the spiral groove, so that the sleeve shaft drives the protective cover to rotate in the opposite direction, opening the laser cutting mechanism and the cutting mechanism.

[0015] Therefore, the adjustment of the protective cover in the open and closed states can adapt to the movement of the first or second lifting mechanism without the need for additional drive equipment, which helps to save energy.

[0016] 2. The guide rod, vertical shaft, and sleeve shaft have a simple structure, making them easy to inspect and maintain.

[0017] 3. When the first or second lifting seat moves the guide rod from the spiral groove into the vertical groove, the vertical groove provides space for the guide rod to move vertically downward, which will not hinder the continued descent of the first and second lifting seats, thus expanding the lifting range of the first and second lifting seats. Furthermore, as the first and second lifting seats continue to move downwards, the vertical groove will not cause the sleeve shaft to rotate around the vertical axis, thus maintaining the protective cover's shielding state stably and improving reliability.

[0018] 4. By using nuts as anti-fall parts, the vertical shaft and sleeve shaft can be easily disassembled and installed, making replacement and maintenance convenient. Attached Figure Description

[0019] Figure 1 This is a 3D view of the protective structure of the profile laser composite machine tool; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 It is a 3D view of the protective structure of the profile laser composite machine tool after removing the vertical axis, sleeve axis and protective cover; Figure 4 yes Figure 3 A magnified view of a section at point B in the middle; Figure 5 When the guide rod is at the bottom of the spiral groove, the guide rod, vertical shaft, sleeve shaft, and protective cover form a three-dimensional structure. Figure 1 ; Figure 6 When the guide rod is at the bottom of the spiral groove, the guide rod, vertical shaft, sleeve shaft, and protective cover form a three-dimensional structure. Figure 2 ; Figure 7 When the guide rod is at the top of the spiral groove, the guide rod, vertical shaft, sleeve shaft, and protective cover form a three-dimensional structure. Figure 1 ; Figure 8 When the guide rod is at the top of the spiral groove, the guide rod, vertical shaft, sleeve shaft, and protective cover form a three-dimensional structure. Figure 2 ; Figure 9 It is a breakdown diagram of the guide rod, vertical shaft, and sleeve shaft; Figure 10 The service status of the protective structure for profile laser composite machine tools Figure 1 ; Figure 11 The service status of the protective structure for profile laser composite machine tools Figure 2 ; Figure 12 It is a 3D diagram of the background technology.

[0020] Explanation of reference numerals in the attached figures: 1-Bed body, 11-Sliding slide rail, 12-Safety door, 211-Transverse slider, 212-Transverse slider rack, 221-Longitudinal sliding seat, 231-Vertical mover base, 232-Vertical mover motor, 31-First lifting seat, 41-Second Lifting Seat 51-laser, 61-Cutting motor, 62-Cutting tool, 7-Guide rod, 8-Vertical axis, 81-Horizontal axis, 811-Mounting plate, 82-Limiting part, 83-Nut, 9-Sleeve shaft, 91-Helical groove, 92-Vertical groove, 10-Protective shield, 20- Profile. Detailed Implementation

[0021] To better understand this utility model, it will be further described below with reference to the accompanying drawings. It is worth noting that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are used for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example: A protective structure for a profile laser composite machine tool, see [reference] Figure 1 and Figure 3 It includes a bed 1, a moving mechanism on the bed 1, a first lifting mechanism and a second lifting mechanism on the moving mechanism, a laser cutting mechanism on the first lifting mechanism and a cutting mechanism on the second lifting mechanism.

[0023] The moving mechanism includes a lateral moving component, a longitudinal moving component, and a vertical moving component.

[0024] See Figure 1 and Figure 3The transverse assembly includes a transverse base 211, a transverse motor, a transverse gear, and a transverse rack 212. A transverse slider is fixedly mounted on the bottom of the transverse base 211, and the transverse slider slides laterally with the transverse slide rail 11 on the bed 1. The transverse motor is a servo motor, which is fixedly mounted on the transverse base 211. The transverse gear is fixedly mounted on the output shaft of the transverse motor. The transverse rack 212 is fixedly mounted on the bed 1, and the transverse gear meshes with the transverse rack 212. After the transverse motor is started, the transverse motor drives the transverse gear to rotate, and the transverse gear drives the transverse base 211 to move laterally along the transverse rack 212.

[0025] See Figure 1 and Figure 3 The longitudinal movement assembly includes a longitudinal movement base 221, a longitudinal movement motor, a longitudinal movement screw, and a longitudinal movement nut seat. A longitudinal movement slide rail is fixedly mounted on the bottom of the longitudinal movement base 221, and a longitudinal movement slider is fixedly mounted on the top surface of the transverse movement base 211. The longitudinal movement slide rail slides longitudinally in contact with the longitudinal movement slider. The longitudinal movement motor is a servo motor, fixedly mounted on the bottom of the longitudinal movement base 221. Both ends of the longitudinal movement screw are rotatably mounted on the bottom of the longitudinal movement base 221 via bearing seats, and one end of the longitudinal movement screw is fixedly connected to the output shaft of the longitudinal movement motor. The longitudinal movement nut seat is fixedly mounted on the transverse movement base 211, and the longitudinal movement nut seat is threadedly engaged with the longitudinal movement screw. After the longitudinal movement motor starts, it drives the longitudinal movement screw to rotate, causing the longitudinal movement base 221 to move longitudinally relative to the transverse movement base 211.

[0026] See Figure 1 and Figure 3 The vertical movement assembly includes a vertical movement base 231, a vertical movement motor 232, a vertical movement screw, and a vertical movement nut seat. A vertical movement slide rail is fixedly installed on the rear side of the vertical movement base 231, and a vertical movement slide block is fixedly installed on the front side of the vertical movement base 221. The vertical movement slide rail slides vertically with the vertical movement slide block. The vertical movement motor 232 is a servo motor and is fixedly installed on the rear side of the vertical movement base 231. Both ends of the vertical movement screw are rotatably mounted on the rear side of the vertical movement base 231 through bearing seats, and the upper end of the vertical movement screw is fixedly connected to the output shaft of the vertical movement motor 232. The vertical movement nut seat is fixedly installed on the front side of the vertical movement base 221, and the vertical movement nut seat is threadedly engaged with the vertical movement screw. After the vertical movement motor 232 is started, the vertical movement motor 232 drives the vertical movement screw to rotate, and the vertical movement screw drives the vertical movement base 231 to move vertically relative to the vertical movement base 221.

[0027] See Figure 4 The first lifting mechanism includes a first lifting seat 31 and a first lifting drive component; the first lifting drive component can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The cylinder body of the first lifting drive component is fixedly installed inside the vertical shift seat 231. The piston rod of the first lifting drive component is set downwards. The first lifting seat 31 is fixedly installed on the piston rod of the first lifting drive component. The first lifting drive component drives the first lifting seat 31 to rise and fall.

[0028] See Figure 4 The second lifting mechanism includes a second lifting seat 41 and a second lifting drive component; the second lifting drive component can also be a cylinder, hydraulic cylinder or electric cylinder, and the cylinder body of the second lifting drive component is also fixedly installed inside the vertical shift seat 231. The piston rod of the second lifting drive component is set downward, and the second lifting seat 41 is fixedly installed on the piston rod of the second lifting drive component. The second lifting drive component drives the second lifting seat 41 to rise and fall.

[0029] See Figure 2 and Figure 4 The laser cutting mechanism includes a laser 51, which is fixedly installed on the front side of the first lifting seat 31.

[0030] See Figure 2 and Figure 4 The cutting mechanism includes a cutting motor 61 and a cutting tool 62. The cutting motor 61 is fixedly installed on the front side of the second lifting seat 41, and the cutting tool 62 is installed on the output shaft of the cutting motor 61.

[0031] When using the laser 51 to cut the profile 20, the first lifting drive needs to be used to drive the first lifting seat 31 to move down. The first lifting seat 31 drives the laser 51 to move down, so that the height of the laser 51 is lower than the cutting mechanism, so that the laser 51 is closer to the profile 20 placed on the bed 1 than the cutting mechanism.

[0032] When using the cutting mechanism to cut the profile 20, the second lifting drive needs to be used to drive the second lifting seat 41 to move down. The second lifting seat 41 drives the cutting mechanism to move down, so that the height of the cutting mechanism is lower than the laser 51, so that the cutting mechanism is closer to the profile 20 placed on the bed 1 than the laser 51.

[0033] See Figure 4 The first lifting seat 31 and the second lifting seat 41 are both fixedly installed with guide rods 7 on the side opposite to each other.

[0034] See Figure 2 The vertical shifting assembly has two vertical shafts 8 on the vertical shifting base 231, located on the left and right sides of the vertical shifting base 231 respectively. The top of each of the two vertical shafts 8 is provided with a horizontal shaft 81, and the vertical shafts 8 and the horizontal shafts 81 are an integral structure; a mounting plate 811 is welded and fixed to the end of the horizontal shaft 81 away from the vertical shaft 8, and the mounting plate 811 is fixedly installed on the vertical shifting base 231 by screws.

[0035] See Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9Each of the two vertical shafts 8 has a sleeve shaft 9 in the middle, and a sleeve hole in the middle of the sleeve shaft 9. The vertical shaft 8 is rotatably engaged with the sleeve hole. Each of the two vertical shafts 8 has an annular limiting part 82 at the top. The vertical shaft 8 and the limiting part 82 are an integral structure. The limiting part 82 is used to prevent the sleeve shaft 9 from sliding upward along the vertical shaft 8. The bottom of the vertical shaft 8 has a fall prevention part, which is a nut 83. The nut 83 is threaded to the bottom of the vertical shaft 8. The fall prevention part is used to prevent the sleeve shaft 9 from sliding downward along the vertical shaft 8. Because there is a limiting part 82 at the top of the sleeve shaft 9 and a fall prevention part at the bottom of the sleeve shaft 9, the sleeve shaft 9 will not move up and down along the vertical shaft 8. The sleeve shaft 9 can only rotate around the vertical shaft 8.

[0036] To assemble the vertical shaft 8 and the sleeve shaft 9, first, align the sleeve hole of the sleeve shaft 9 with the bottom of the vertical shaft 8; then, slide the sleeve shaft 9 onto the vertical shaft 8 from bottom to top; finally, screw the nut 83 onto the bottom of the vertical shaft 8. Conversely, to disassemble the vertical shaft 8 and the sleeve shaft 9, first, unscrew the nut 83 from the bottom of the vertical shaft 8; then, peel the sleeve shaft 9 off the vertical shaft 8. Through the above assembly and disassembly process of the vertical shaft 8 and the sleeve shaft 9, it can be seen that by using the nut 83 as a fall-prevention part, the vertical shaft 8 and the sleeve shaft 9 can be easily assembled and disassembled, facilitating replacement and maintenance.

[0037] See Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A protective cover 10 is welded and fixed to the side wall of the sleeve shaft 9. The side wall of the sleeve shaft 9 is also provided with a spiral groove 91, and the guide rod 7 cooperates with the spiral groove 91.

[0038] The working principle of this embodiment is as follows: (1) When using the laser 51 to cut the profile 20, firstly, the first lifting drive is used to drive the first lifting seat 31 to move down. The first lifting seat 31 drives the laser 51 to move down, so that the laser 51 is closer to the profile 20 placed on the bed 1 than the cutting mechanism, so as to avoid the cutting mechanism from hindering the operation of the laser 51 because the height of the laser 51 is the same.

[0039] During the downward movement of the first lifting seat 31, the first lifting seat 31 drives the guide rod 7 to move downward. The guide rod 7 pushes the lower groove wall of the spiral groove 91, causing the sleeve shaft 9 to rotate around the vertical axis 8. The protective cover 10 rotates along with the sleeve shaft 9, so that the protective cover 10 rotates to the state of blocking the laser 51 and the cutting mechanism. At this time, see Figure 10 .

[0040] Then, the horizontal, vertical, and longitudinal components of the moving mechanism adjust the horizontal, longitudinal, and vertical positions of the vertical moving base 231, respectively, so that the horizontal, longitudinal, and vertical positions of the laser 51 and the protective cover 10 on the vertical moving base 231 are also adjusted. The laser 51 performs laser cutting on the profile 20. (See also...) Figure 11 .

[0041] Because the laser 51 is protected by a protective cover 10, it can prevent workers from being injured by sparks and flying debris generated during laser cutting, thus achieving a protective function.

[0042] Finally, when the laser cutting operation is completed, the horizontal, vertical and vertical components are reset to their initial positions, the first lifting drive drives the first lifting seat 31 to move upward and reset, and the first lifting seat 31 drives the laser 51 and the guide rod 7 to move upward and reset.

[0043] As the guide rod 7 moves upward, it pushes the upper wall of the spiral groove 91, causing the sleeve shaft 9 to rotate in the opposite direction around the vertical axis 8. The protective cover 10 rotates in the opposite direction along with the sleeve shaft 9, so that the protective cover 10 rotates to the state of opening the laser 51 and the cutting mechanism.

[0044] (2) When using the cutting mechanism to cut the profile 20, firstly, the second lifting drive is used to drive the second lifting seat 41 to move down. The second lifting seat 41 drives the cutting mechanism to move down, so that the cutting mechanism is closer to the profile 20 placed on the bed 1 than the laser 51, so as to avoid the laser 51 from hindering the operation of the cutting mechanism because the laser 51 is at the same height as the cutting mechanism.

[0045] During the downward movement of the second lifting seat 41, the second lifting seat 41 drives the guide rod 7 to move downward. The guide rod 7 pushes the lower groove wall of the spiral groove 91, causing the sleeve shaft 9 to rotate around the vertical axis 8. The protective cover 10 rotates together with the sleeve shaft 9, so that the protective cover 10 rotates to the state of blocking the cutting mechanism and the laser 51.

[0046] Then, the lateral, longitudinal, and vertical components in the moving mechanism adjust the lateral, longitudinal, and vertical positions of the vertical moving seat 231, respectively, so that the lateral, longitudinal, and vertical positions of the cutting mechanism and the protective cover 10 on the vertical moving seat 231 are also adjusted, and the cutting mechanism performs cutting operations on the profile 20.

[0047] Because the cutting mechanism is protected by a protective cover 10, it can prevent workers from being injured by flying debris generated during cutting, thus achieving a protective function.

[0048] Finally, when the cutting operation is completed, the transverse, longitudinal, and vertical components are reset to their initial positions, the second lifting drive drives the second lifting seat 41 to move upward and reset, and the second lifting seat 41 drives the cutting mechanism and guide rod 7 to move upward and reset.

[0049] As the guide rod 7 moves upward, it pushes the upper wall of the spiral groove 91, causing the sleeve shaft 9 to rotate in the opposite direction around the vertical axis 8. The protective cover 10 rotates in the opposite direction along with the sleeve shaft 9, so that the protective cover 10 is turned to the state of opening the cutting mechanism and the laser 51.

[0050] Based on the working principle described above in this embodiment, it can be seen that this embodiment has the following effects: As described above, when the first lifting seat 31 or the second lifting seat 41 descends, it can drive the guide rod 7 installed with it to descend. The guide rod 7 pushes the lower groove wall of the spiral groove 91 on the side wall of the sleeve shaft 9, so that the sleeve shaft 9 can rotate around the vertical axis 8. The sleeve shaft 9 drives the protective cover 10 to rotate together, so that the protective cover 10 can block the laser 51 and the cutting mechanism. Conversely, when the first lifting seat 31 or the second lifting seat 41 rises, it can drive the guide rod 7 installed with it to move upward. The guide rod 7 pushes the upper groove wall of the spiral groove 91, so that the sleeve shaft 9 drives the protective cover 10 to rotate in the opposite direction, opening the laser 51 and the cutting mechanism.

[0051] Therefore, the adjustment of the protective cover 10 in the open and closed states can adapt to the movement of the first lifting seat 31 or the second lifting seat 41 without the need for additional drive equipment, which helps to save energy.

[0052] Furthermore, the guide rod 7, vertical shaft 8, and sleeve shaft 9 have simple structures, making them easy to inspect and maintain.

[0053] Further, see Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A vertical groove 92 is also provided on the side wall of the sleeve shaft 9, and the bottom of the spiral groove 91 is connected to the top of the vertical groove 92.

[0054] When the first lifting seat 31 moves the guide rod 7 down to the bottom of the spiral groove 91, the protective cover 10 is in the state of blocking the laser 51 and the cutting mechanism. If the first lifting seat 31 continues to move the guide rod 7 down, the guide rod 7 slides down in the vertical groove 92. At this time, the sleeve shaft 9 will not rotate around the vertical axis 8, so that the protective cover 10 remains in the state of blocking the laser 51 and the cutting mechanism.

[0055] Similarly, when the second lifting seat 41 drives the guide rod 7 to move down from the bottom of the spiral groove 91 into the vertical groove 92, the protective cover 10 can also maintain the state of shielding the cutting mechanism and the laser 51.

[0056] Therefore, when the first lifting seat 31 or the second lifting seat 41 drives the guide rod 7 to move down from the spiral groove 91 into the vertical groove 92, the vertical groove 92 provides space for the guide rod 7 to move vertically downward, which will not hinder the continued descent of the first lifting seat 31 and the second lifting seat 41, thus expanding the lifting range of the first lifting seat 31 and the second lifting seat 41; moreover, when the first lifting seat 31 and the second lifting seat 41 continue to move down, the vertical groove 92 will not cause the sleeve shaft 9 to rotate around the vertical axis 8, which can stably maintain the shielding state of the protective cover 10, which is conducive to improving the reliability of use.

[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A protective structure for a profile laser composite machine tool, comprising a bed, a moving mechanism on the bed, a first lifting mechanism and a second lifting mechanism on the moving mechanism, a laser cutting mechanism on the first lifting mechanism, and a cutting mechanism on the second lifting mechanism, characterized in that... Both the first and second lifting mechanisms are equipped with guide rods. The moving mechanism is equipped with two vertical shafts, and each vertical shaft is rotatably connected to a sleeve shaft. The sleeve shaft is equipped with a protective cover, and the side wall of the sleeve shaft is equipped with a spiral groove. The guide rod cooperates with the spiral groove. When the guide rod moves down, the sleeve shaft and the protective cover rotate around the vertical shaft to the blocking state.

2. The protective structure of a profile laser composite machine tool according to claim 1, characterized in that, The first lifting mechanism includes a first lifting seat and a first lifting drive component. The first lifting drive component is used to drive the first lifting seat to lift. The laser cutting mechanism is provided on the first lifting seat. The second lifting mechanism includes a second lifting seat and a second lifting drive component. The second lifting drive component is used to drive the second lifting seat to rise and fall. The cutting mechanism is provided on the second lifting seat. Both the first and second lifting seats are equipped with the guide rods.

3. The protective structure of a profile laser composite machine tool according to claim 1, characterized in that, The side wall of the sleeve is also provided with a vertical groove, and the bottom of the spiral groove is connected to the top of the vertical groove.

4. The protective structure of a profile laser composite machine tool according to any one of claims 1-3, characterized in that, The top of the vertical shaft is connected to the moving mechanism, and the middle of the sleeve shaft is provided with a sleeve hole. The vertical shaft and the sleeve hole are rotatably engaged. The bottom of the vertical shaft is provided with a fall-prevention part, which abuts against the bottom of the sleeve shaft.

5. The protective structure of a profile laser composite machine tool according to claim 4, characterized in that, The fall arrestor is made of a nut, which is threaded to the bottom of the vertical shaft and abuts against the bottom of the sleeve shaft.

6. The protective structure of a profile laser composite machine tool according to claim 4, characterized in that, The top of the vertical axis is provided with a horizontal axis, and the horizontal axis has a mounting plate at the end away from the vertical axis. The mounting plate is connected to the moving mechanism.

7. The protective structure of a profile laser composite machine tool according to claim 4, characterized in that, The upper part of the vertical shaft is provided with a limiting part, which is used to prevent the sleeve shaft from moving upward.

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