Off-side cutting asymmetric lathe bed structure and laser pipe cutting machine

Abstract

The invention provides an offside cutting asymmetric lathe bed structure and a laser pipe cutting machine, relates to the field of laser pipe cutting equipment, and aims to solve the problems that the height of a lathe bed is high, the feeding height of a semi-automatic feeding machine exceeds the human engineering standard and the labor intensity of workers is increased due to the stroke and structural characteristics of a follow-up centering assembly of an existing laser pipe cutting machine. The first guide rail and the second guide rail which are distributed in a height difference mode are arranged, the structural layout of the lathe bed and the chuck sliding plate is changed, the height of the side, matched with the semi-automatic feeding machine, of the lathe bed is reduced, then the height of the semi-automatic feeding machine can be reduced to the height conforming to human engineering, and the labor intensity during manual discharging is reduced; and the space on one side of the lower first guide rail is fully utilized, the protective cover is arranged on the lathe bed on one side, facing the laser processing position, of the first guide rail, and the top end of the protective cover extends into the avoiding groove after crossing the top end of the first guide rail, so that the guide rail protective structure is optimized.

Description

Technical Field

[0001] The present invention relates to the field of laser pipe cutting equipment, and particularly to an offside cutting asymmetric bed structure and a laser pipe cutting machine. Background Art

[0002] A laser pipe cutting machine with offside cutting function for two chucks of the bevel groove has significant advantages of energy saving, high cutting accuracy and high efficiency. In the prior art, the front chuck can achieve the offside cutting function, and the front chuck component moves by means of servo drive. When in the non-offside cutting state, the front chuck component is located behind the cutting head; while in offside cutting, the front chuck component can move to the front of the cutting head. However, offside cutting also has special requirements for the height of the semi-automatic loading machine. The semi-automatic loading machine usually works in cooperation with the follow-up centering component on the bed. The follow-up centering component can lift the pipe fitting to the center of the chuck, assisting in clamping the pipe fitting. When the rear chuck moves close to it, the follow-up centering component needs to quickly descend into the bed for avoidance so that the rear chuck can smoothly pass above it. This requires that the stroke of the follow-up centering component is large enough, which should not only meet the requirement of reaching the center of the chuck when rising, but also avoid the moving track of the rear chuck when descending, and at the same time not hit the ground. Based on such structural characteristics, the height of this component itself is not too small. Even by adopting the structural optimization method of two-stage lifting, its height is still 0.72 meters after being lowered to the lowest.

[0003] Due to this height characteristic of the follow-up centering component, the height of the bed is also correspondingly high, about 0.8 meters, which is higher than the follow-up centering component, so as to ensure that the rear chuck will not collide with it when moving on the bed. However, after the bed is raised to about 0.8 meters, when the semi-automatic loading machine feeds the material, it has to be forced to be raised to about 1.0 meters, which exceeds the ergonomic standard. When manual feeding operation is carried out, due to the increase of the potential energy of the material, the labor intensity also increases significantly.

[0004] A Chinese patent (publication number CN 114654106 B, publication date 20220624) provides a two-chuck side-mounted laser tube cutting machine, in which two rows of parallel guide rails and a row of racks are installed on the upper surface of the bed. A chuck rotary motor and a reducer assembly are fixed on the hollow pneumatic front chuck. The front chuck slide is fixed to the guide rail slider of the linear guide rail 1 by screws and is hung on the side of the bed. The chuck is arranged in a side-hanging manner, so that the guide rail arrangement area avoids the follow-up centering component in the horizontal direction, but it is not suitable for the chuck slides distributed on both sides with the guide rails. It still cannot solve the problem that the bed height is too high and it is inconvenient to adapt to the semi-automatic loader; in addition, the front chuck component has an offside action, so a guide rail must be set. The guide rail is located below the laser cutting area, so the guide rail must be equipped with dust and flame erosion prevention measures, and this area is in the direction of continuous material discharge, which makes this space a more complex "airspace". The traditional guide rail protection structure is easy to interfere with the slide and follow-up blanking assembly of the front chuck assembly. In order to avoid interference, the distribution range of the guide rail protection structure is limited, and the protection ability of the guide rail is poor, which affects the reliability during long-term operation. Summary of the invention

[0005] The purpose of the present invention is to provide an off-set cutting asymmetric bed structure and a laser pipe cutting machine in response to the defects of the prior art, and to provide a first guide rail and a second guide rail with a height difference distribution, thereby changing the structural layout of the bed and the chuck slide, so that the height of the bed matching the side of the semi-automatic loader is lowered, and the height of the semi-automatic loader can be lowered to an ergonomic height, thereby reducing the labor intensity during manual material placement.

[0006] The first object of the present invention is to provide an offside cutting asymmetric bed structure, which adopts the following scheme:

[0007] A bed, on which a first guide rail and a second guide rail with a height difference distribution are provided;

[0008] A chuck slide is mounted on the first guide rail and the second guide rail, the top surface of the chuck slide is used to carry the chuck, a padding portion of the chuck slide is provided between the chuck slide and the first guide rail, a first slider slidably matched with the first guide rail is connected to the padding portion, an inwardly recessed avoidance groove is provided on the side of the padding portion, a second slider connected to the chuck slide is provided between the chuck slide and the second guide rail, and the second slider slidably matches the second guide rail;

[0009] The protective cover is arranged on the bed on the side of the first guide rail facing the laser processing position, and the top end thereof passes over the top end of the first guide rail and extends into the avoidance groove.

[0010] Furthermore, the first guide rail is located on the loading side of the bed, and the vertical height of the first guide rail is lower than the vertical height of the second guide rail.

[0011] Further, the first guide rail and the second guide rail are arranged in parallel.

[0012] Further, the avoidance groove faces the second guide rail. The bottom end of the protective cover is fixed to the bed body, and the top end is bent and extends into the avoidance groove to shield the top surface and the side surface of the first guide rail.

[0013] Further, the vertical cross-section of the protective cover is in a shape of "7".

[0014] Further, a follow-up blanking component is also installed on the bed body. The follow-up blanking component is provided with a turning plate, and the turning plate is located above the protective cover and is arranged at an interval from the protective cover.

[0015] Further, the chuck slide plate includes a carrier plate. A cushion block fixed to the carrier plate is provided between the carrier plate and the first guide rail as a heightening part, and the vertical cross-section of the cushion block is in a shape of "C".

[0016] Further, the avoidance groove is formed in the cushion block, and the avoidance groove is distributed longitudinally along a direction parallel to the first guide rail.

[0017] Further, laser brackets are respectively arranged on both sides of the bed body, and the top end of the laser bracket is lower than the first guide rail or the second guide rail on the corresponding side.

[0018] The second object of the present invention is to provide a laser pipe cutting machine, which utilizes the offside cutting asymmetric bed body structure as described in the first object.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are:

[0020] Aiming at the problem that due to the stroke and structural characteristics of the follow-up centering component in the current laser pipe cutting machine, the height of the bed body is relatively high, and the feeding height of the semi-automatic loading machine exceeds the ergonomic standard, increasing the labor intensity of workers. The first guide rail and the second guide rail with height difference distribution are set, which changes the structural layout of the bed body and the chuck slide plate, so that the height of the side of the bed body matching the semi-automatic loading machine is reduced. Furthermore, the height of the semi-automatic loading machine can be reduced to an ergonomic height, reducing the labor intensity during manual feeding; and the space on the side of the lower first guide rail is fully utilized. By arranging a protective cover on the bed body on the side of the first guide rail facing the laser processing position, and the top end crosses the top end of the first guide rail and extends into the avoidance groove, the guide rail protection structure is optimized. Its top end crosses the top end of the first guide rail and extends into the avoidance groove, effectively avoiding interference with the chuck slide plate and the follow-up blanking component, and achieving good shielding from the side of the first guide rail, improving the protection ability, reducing damage to the guide rail caused by dust, flame ablation, etc. during laser cutting, and prolonging the service life of the guide rail. Description of the Drawings

[0021] The attached drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] Figure 1 It is a schematic diagram of an offside cutting asymmetric bed structure in one or more embodiments of the present invention.

[0023] Figure 2 It is a schematic diagram of a chuck slide in one or more embodiments of the present invention.

[0024] Figure 3 It is a schematic diagram of the distribution positions of the first guide rail and the second guide rail in one or more embodiments of the present invention.

[0025] Among them, 1, semi-automatic loading machine; 2, protective cover; 3, first guide rail; 4, second guide rail; 5, turning plate; 6, chuck slide; 7, avoidance groove; 8, bed; 9, elevation part; 10, first slider; 11, second slider. Detailed implementation manners

[0026] Embodiment 1

[0027] In a typical embodiment of the present invention, as Figures 1-3 shown, an offside cutting asymmetric bed structure is given.

[0028] The purpose of this embodiment is to solve the problems that when the existing laser pipe cutting machine performs offside cutting, the height of the bed 8 is too high, resulting in the height of the semi-automatic loading machine 1 not meeting ergonomics, and there are interference contradictions between the guide rail protection and the follow-up blanking assembly. This embodiment provides an offside cutting asymmetric bed structure, which sets the first guide rail 3 and the second guide rail 4 with a height difference distribution, changes the structural layout of the bed 8 and the chuck slide 6, reduces the height of the side of the bed 8 that matches the semi-automatic loading machine 1, and by arranging the protective cover 2 on the bed 8 on the side of the first guide rail 3 facing the laser processing position, and the top extends into the avoidance groove 7 after crossing the top of the first guide rail 3, the guide rail protection structure is optimized to avoid the interference problem between the guide rail protection and the follow-up blanking assembly.

[0029] As Figure 1 、 Figure 2 shown, the offside cutting asymmetric bed structure mainly includes a bed 8, a chuck slide 6 and a protective cover 2. The bed 8 is provided with the first guide rail 3 and the second guide rail 4 with a height difference distribution; the chuck slide 6 is mounted on the first and second guide rails 4. There is an elevation part 9 between the chuck slide 6 and the first guide rail 3. The elevation part 9 is connected to the first slider 10, and there is an avoidance groove 7 on the side of the elevation part 9. The chuck slide 6 is connected to the second guide rail 4 through the second slider 11; the protective cover 2 is arranged on the bed 8 on the side of the first guide rail 3 facing the laser processing position, and the top extends into the avoidance groove 7 after crossing the top of the first guide rail 3.

[0030] In this embodiment, as Figure 1 and Figure 3 shown, the height of the first guide rail 3 is set to b = 696 mm, the height of the second guide rail 4 is set to c = 769 mm, and the height difference between the first guide rail 3 and the second guide rail 4 is a = 100 mm; after reducing the height of the first guide rail 3, the height of the semi-automatic loading machine 1 is also reduced to e = 887.1 m, which conforms to the ergonomic height and reduces the labor intensity during loading.

[0031] In the prior art, the height of the follow-up centering component is large, which raises the bed body 8, resulting in the feeding height of the semi-automatic loading machine 1 exceeding the ergonomic standard and the labor intensity of manual feeding being large. In this embodiment, by setting the height difference guide rail, the height of the side of the bed body 8 matching the semi-automatic loading machine 1 is reduced, the structural layout of the bed body 8 and the chuck slide plate 6 is optimized, the height of the bed body 8 is reduced, and then the height of the semi-automatic loading machine 1 can be reduced, thus reducing the labor intensity.

[0032] The guide rail with a height difference distribution changes the overall structural layout of the bed body 8. In a limited production space, reducing the height of one side of the bed body 8 can better adapt to the installation and placement of different auxiliary equipment, improving the utilization rate of the workshop space. It can make the layout of the surrounding pipe storage racks, waste collection devices, etc. and the pipe cutting machine more compact and reasonable, reduce the floor area of the equipment, and enhance the compactness and orderliness of the overall production space.

[0033] The top surface of the chuck slide plate 6 is used to carry the chuck. A heightening part 9 of the chuck slide plate 6 is provided between the chuck slide plate 6 and the first guide rail 3. One side of the chuck slide plate 6 is matched with the first guide rail 3 through the first slider 10 connected by the heightening part 9, and the other side of the chuck slide plate 6 is matched with the second guide rail 4 through the connection of the second slider 11, realizing the sliding displacement of the chuck slide plate 6 on the bed body 8, thereby driving the chuck carried by it to move relative to the bed body 8. The second slider 11 slidingly cooperates with the second guide rail 4 to ensure the horizontal attitude and stable operation of the chuck on the premise of normal operation of the chuck, and at the same time provides an installation space for the guide rail protection.

[0034] In addition, in the traditional structure, it is difficult to protect the guide rail. An avoidance groove 7 recessed inward is provided on the side surface of the heightening part 9, so that the heightening part 9 of the chuck slide plate 6 forms a partially hollow structure, and one end of the protective cover 2 for protecting the guide rail can be inserted into it, increasing the protection range, realizing the functions of dust prevention and ablation prevention, solving the problem of guide rail protection. At the same time, due to the distribution of the height difference guide rail, an installation space is provided for the protective cover 2, avoiding interference between the protective cover 2 and the turning plate 5 of the follow-up blanking component.

[0035] Specifically, as Figure 2As shown in the figure, the first guide rail 3 is located on the loading side of the bed 8. The vertical height of the first guide rail 3 is lower than that of the second guide rail 4. By reducing the height of the first guide rail 3 on the loading side of the bed 8, the overall structure of the bed 8 presents an asymmetric high-low platform layout.

[0036] This directly reduces the height of the side of the bed 8 that cooperates with the semi-automatic loading machine 1, and further enables the height of the semi-automatic loading machine 1 to be reduced to an ergonomic height. Taking actual data as an example, the height of the semi-automatic loading machine 1 can be reduced from about 1.0 meter to 0.88 meters, reducing the potential energy during manual feeding, thereby effectively reducing the labor intensity.

[0037] The first guide rail 3 and the second guide rail 4 are arranged in parallel to ensure the smoothness and cutting accuracy of the chuck when it runs on guide rails at different heights, enabling the chuck slide 6 to slide stably on the high-low guide rails, ensuring that the chuck is always in a horizontal posture, and further ensuring that the cutting head can remain stable when cutting pipe fittings, improving the cutting accuracy. When cutting pipe fittings with a longer size (1 meter - 2 meters), the stable chuck posture can overcome the interference of the centrifugal swing generated by the rotation of the workpiece to the accuracy, improving the product quality.

[0038] To solve the problem of guide rail protection, avoid the dust and flame erosion generated by laser cutting on the guide rails, and prevent the interference between the protection structure and other components. In this embodiment, an avoidance groove 7 facing the second guide rail 4 is provided at the raised part 9 of the chuck slide 6, and the top end of the protective cover 2 is bent and extended into the avoidance groove 7, enabling the protective cover 2 to fully cover the top surface and side surface of the first guide rail 3. On the one hand, it effectively protects the first guide rail 3 from being eroded by the dust and flame generated by laser cutting, extending the service life of the guide rail; on the other hand, through a reasonable structural design, while the protective cover 2 plays a protective role, it avoids interference with other components such as the chuck slide 6 and the follow-up blanking component during operation, ensuring the normal operation of each component of the equipment.

[0039] While meeting the requirements of guide rail protection, optimize the structure of the protective cover 2 so that it can not only effectively protect the guide rail, but also avoid interference with other components, and ensure its own structural strength. The 7-shaped protective cover 2 not only enhances the protection ability of the guide rail, but also, due to its unique shape, better adapts to the layout of each component of the equipment in a limited space, reducing the risk of interference with other components. At the same time, this structural design also improves the rigidity of the protective cover 2 itself, making it not easy to deform during long-term use, ensuring the stability of the protection effect.

[0040] As Figure 3As shown in the figure, the follow-up blanking assembly is provided with a turning plate 5. By the action of the cylinder, the turning plate 5 is opened (the turning plate 5 is in a retracted state by default), increasing the area of the working surface. The projection of the increased area can just cover the guide rail position of the bed 8, effectively preventing the workpiece from falling into this projected area and damaging the guide rail or the protective cover 2 (or the bellows). The working surface is lifted upward by a standard cylinder located at the rear side below it. The front side below the working surface is fixed by a hinge, and the working surface thus becomes inclined. The cut pipe fittings will automatically slide downward and finally fall into the collection basket to complete the blanking action.

[0041] During the process of the turning plate 5 changing from the horizontal state to the vertical state and retracting, the movement trajectory of the turning plate 5 can be regarded as a fan-shaped area. The structures within the fan-shaped area will interfere with the turning plate 5. However, in fact, a guide rail dust cover (or bellows) will appear within this fan-shaped area due to the lowering of the follow-up blanking device and interfere with it. Therefore, the smaller the width of the turning plate 5, the better. Thus, there is a contradiction in the prior art. To increase the protection area, the wider the width of the turning plate 5, the better. To avoid interference with the protective cover 2, the smaller the width of the turning plate 5, the better.

[0042] In this embodiment, the protective cover 2, by being arranged on one side of the lower first guide rail 3, can fully avoid the movement path of the turning plate 5, can solve the interference problem between the turning plate 5 and the protective cover 2 during the working process of the follow-up blanking assembly, enables the size of the turning plate 5 to reach d = 175 mm, and at the same time ensures the smoothness of the blanking process and avoids the pipe fittings from falling and damaging the guide rail or other components.

[0043] The turning plate 5 is arranged above the protective cover 2 and keeps a certain interval from the protective cover 2. The turning plate 5 can be opened or retracted under the drive of the cylinder. When opened, it increases the area of the working surface and prevents the pipe fittings from falling and damaging the guide rail; when retracted, it reduces the area of the working surface and avoids interference with the protective cover 2.

[0044] When the follow-up blanking assembly works, the opening of the turning plate 5 can effectively protect key components such as the guide rail and prevent damage caused by the falling of the pipe fittings; when the chuck moves out of position, the retraction of the turning plate 5 can avoid interference with the protective cover 2, ensure the normal operation of each component of the equipment, and improve the reliability and stability of the equipment operation.

[0045] A spacer block with a C-shaped vertical cross-section is arranged between the carrier plate and the first guide rail 3 as the heightening part 9. By using the structural characteristics of the C shape, it not only meets the heightening requirement but also leaves space for installing the guide rail protective cover 2. The C-shaped spacer block enables the chuck slide plate 6 to be stably erected on guide rails with different heights, ensures the levelness of the chuck, and ensures the stability of the cutting process. At the same time, its internal space can be used to install the guide rail protective cover 2 to achieve dust and ablation protection for the guide rail, improve the service life of the equipment and the cutting quality.

[0046] A relief groove 7 that runs the entire length in the direction parallel to the first guide rail 3 is provided on the cushion block serving as the elevation part 9, enabling the protective cover 2 to smoothly extend into the groove. The relief groove 7 provides an installation space for the protective cover 2, and at the same time ensures that the protective cover 2 will not interfere with the chuck slide 6 when covering the guide rail, and facilitates the installation and maintenance of the protective cover 2.

[0047] After the relief groove 7 runs the entire length, when the chuck slide 6 moves along the first guide rail 3, the chuck slide 6 and the relief groove 7 still remain separated, without restricting the movement range of the chuck slide 6 and improving its running smoothness.

[0048] The laser brackets are arranged on both sides of the bed body 8 and their tops are lower than the height of the corresponding side of the guide rail. The lower height of the laser brackets will not impede the movement of the chuck slide 6, ensuring that the chuck can slide freely on the guide rail to achieve functions such as overtravel cutting. At the same time, the laser brackets can stably support the laser equipment, ensuring the stability and precision of the laser cutting process, enabling the laser pipe cutting machine to work properly, and improving production efficiency and product quality.

[0049] Embodiment 2

[0050] In another typical embodiment of the present invention, as Figures 1-3 shown, a laser pipe cutting machine is given, which utilizes the overtravel cutting asymmetric bed structure as in Embodiment 1.

[0051] The laser pipe cutting machine further includes a laser head and a semi-automatic loading machine 1. The laser head is installed on the laser bracket, and the semi-automatic loading machine 1 is arranged on one side of the bed body 8 and is connected to the follow-up centering assembly provided on the bed body 8. The semi-automatic loading machine 1 can load the pipe to be cut onto the follow-up centering assembly.

[0052] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An offside cutting asymmetric bed structure, characterized in that Comprising: A bed body, on which a first guide rail and a second guide rail with a height difference distribution are provided; A chuck slide plate, which is mounted on the first guide rail and the second guide rail. The top surface of the chuck slide plate is used to carry the chuck. A heightening part of the chuck slide plate is provided between the chuck slide plate and the first guide rail. The heightening part is connected with a first slider that slidably cooperates with the first guide rail. An avoidance groove that is recessed inward is provided on the side of the heightening part. A second slider connected to the chuck slide plate is provided between the chuck slide plate and the second guide rail, and the second slider slidably cooperates with the second guide rail; A protective cover, which is arranged on the bed body on one side of the first guide rail facing the laser processing position, and the top end extends into the avoidance groove after crossing the top end of the first guide rail.

2. The offside cutting asymmetric bed structure according to claim 1, characterized in that, The first guide rail is located on the loading side of the bed body, and the vertical height of the first guide rail is lower than the vertical height of the second guide rail.

3. The offside cutting asymmetric bed structure according to claim 2, characterized in that, The first guide rail and the second guide rail are arranged in parallel.

4. The offside cutting asymmetric bed structure according to claim 1, characterized in that, The avoidance groove faces the second guide rail. The bottom end of the protective cover is fixed to the bed body, and the top end is bent and then extends into the avoidance groove to shield the top surface and the side surface of the first guide rail.

5. The offside cutting asymmetric bed structure according to claim 4, characterized in that, The vertical cross-section of the protective cover is in the shape of a 7.

6. The offside cutting asymmetric bed structure according to claim 1, characterized in that A follow-up blanking assembly is further installed on the bed body. The follow-up blanking assembly is provided with a turning plate, and the turning plate is located above the protective cover and is arranged at an interval from the protective cover.

7. The offside cutting asymmetric bed structure according to claim 1, wherein The chuck slide plate includes a carrier plate. A cushion block fixed to the carrier plate is provided between the carrier plate and the first guide rail as the heightening part, and the vertical cross-section of the cushion block is in the shape of a C.

8. The offside cutting asymmetric bed structure according to claim 7, characterized in that, The avoidance groove is opened on the cushion block, and the avoidance groove is distributed longitudinally along a direction parallel to the first guide rail.

9. The offside cutting asymmetric bed structure according to claim 1, characterized in that, Laser brackets are respectively arranged on both sides of the bed body, and the top ends of the laser brackets are lower than the first guide rail or the second guide rail on the corresponding side.

10. A laser pipe cutting machine, characterized in that, Using the offside cutting asymmetric bed body structure according to any one of claims 1-9.

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