Laser pipe cutting equipment with automatic positioning function

Abstract

The utility model relates to the field of laser cutting, and discloses an automatic positioning laser pipe cutting device which comprises a working table, a guide rail is installed on the working table, a sliding seat is movably installed on the guide rail, a cutting machine is installed on the sliding seat, and a material guiding structure for a workpiece to penetrate through is installed on the working table. A sliding rail is arranged at the bottom of the sliding seat, mutually symmetrical movable seats are movably mounted on the sliding rail, a plurality of mounting frames are mounted on the inner sides of the movable seats, limiting rollers are mounted in the mounting frames through connecting shafts, the mounting frames are mounted on the movable seats through rotating shafts, and rotating driving structures are arranged on the movable seats. According to the utility model, the limiting rollers clamp the workpiece and are in rolling contact with the workpiece, so that the workpiece is fixed in the left-right direction, then the rotating direction of the limiting rollers deviates from the conveying direction of the workpiece, and the limiting rollers are in sliding contact with the workpiece to form sliding friction force, so that the workpiece is fixed in the front-back direction; a workpiece can be fixed in different directions through the same structure, and operation is simpler.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, specifically to an automatic positioning laser tube cutting device. Background Technology

[0002] Metal pipes require different sizes for different applications, so they need to be cut and trimmed as needed. Laser pipe cutting machines can perform non-contact batch cutting of metal pipes without the need for secondary processing.

[0003] Laser tube cutting machines often experience unstable tube fixation and inaccurate cutting during the cutting process, leading to tube breakage. To address this, a utility model patent with publication number CN221935707U provides a laser tube cutting machine that uses rollers in a gripper device to clamp the tube for lateral fixation, and then uses a clamping mechanism to fix the tube front and back. This ensures the tube is firmly fixed both laterally and longitudinally, preventing shaking and ensuring accurate cutting.

[0004] In existing technologies, fixing pipes in different directions requires different structures. After the gripper device is fixed, the clamping mechanism is then used for fixing, which is cumbersome. Furthermore, the fixing effects of the pipes in the horizontal and vertical directions are independent of each other, which may result in poor fixing effect in one direction, thus affecting the final cutting effect. Utility Model Content

[0005] Therefore, this utility model provides an automatically positioned laser tube cutting device, which effectively solves the technical problems in the prior art, such as cumbersome operation and the possibility of poor fixation in one direction, which affects the final cutting effect.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: an automatic positioning laser tube cutting device, including a worktable, a guide rail mounted on the worktable, a slide mounted movably on the guide rail, a cutting machine mounted on the slide, and a material guiding structure for workpieces to pass through mounted on the worktable;

[0007] The bottom of the slide block is provided with a slide rail, and mutually symmetrical movable seats are movably installed on the slide rail. Several mounting frames are installed inside the movable seats, and limit rollers are installed in the mounting frames through connecting shafts. The workpiece is clamped between the limit rollers.

[0008] The mounting frame is mounted on the movable seat via a rotating shaft. The movable seat is provided with a rotating drive structure. The rotating drive structure drives the mounting frame to rotate via the rotating shaft, causing the rotation direction of the limiting roller to deviate from the workpiece transport direction, and the rolling contact between the limiting roller and the workpiece to be changed to a sliding contact.

[0009] Furthermore, the rotation drive structure includes an adjusting gear connected to the end of the rotating shaft and a toothed plate disposed on the side of the adjusting gear;

[0010] The toothed plate meshes with all the adjusting gears. A hydraulic cylinder is connected to the end of the toothed plate. The hydraulic cylinder is mounted on the movable seat. The drive end of the hydraulic cylinder is connected to the toothed plate to drive the toothed plate to translate and the adjusting gears to rotate.

[0011] Furthermore, the slide rail is arranged perpendicular to the transport direction of the workpiece.

[0012] Furthermore, a first drive motor is provided on the slide rail, and a first lead screw is connected to the drive end of the first drive motor;

[0013] The first lead screw is divided into two threaded sections with opposite thread directions. The two threaded sections are respectively threaded with the movable seat so that when the first lead screw rotates, it drives the movable seat to move in opposite directions or away from each other.

[0014] Furthermore, the guide rail is arranged along the transport direction of the workpiece;

[0015] A second drive motor is mounted on the guide rail. The drive end of the second drive motor is connected to a second lead screw. The second lead screw is threadedly engaged with the slide block so that the slide block can slide on the guide rail when the second lead screw rotates.

[0016] Furthermore, when the connecting shaft is arranged in a vertical direction, the limiting roller can make rolling contact with the workpiece;

[0017] When the connecting shaft is set off from the vertical direction, the limiting roller can slide in contact with the workpiece.

[0018] Furthermore, the rotating shaft passes through and is threaded into the movable seat.

[0019] Furthermore, the material guiding structure includes a chuck, which is hollow and allows the workpiece to pass through, and the discharge end of the chuck is provided with clamps.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] In this invention, an adjustable limiting roller is provided. When the rotation direction of the limiting roller coincides with the workpiece transport direction, the limiting roller clamps the workpiece and rolls with it, thus fixing the workpiece in the left-right direction. After adjusting the front-back position of the workpiece, the rotation direction of the limiting roller deviates from the workpiece transport direction, and the limiting roller slides with the workpiece, forming sliding friction, thus fixing the workpiece in the front-back direction. The same structure can achieve fixing of the workpiece in different directions, making the operation simpler.

[0022] Furthermore, by adjusting the friction between the limiting roller and the workpiece, the workpiece can be fixed in the front-to-back direction. While ensuring the workpiece is fixed in the left and right directions, the front-to-back fixation effect can also be ensured, thereby ensuring the cutting effect of the workpiece. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of an automatically positioned laser tube cutting device provided for an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure on the slide block in an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 A structural diagram from another perspective;

[0027] Figure 4 This is a top view of the upper structure of the slide block in an embodiment of the present utility model;

[0028] Figure 5 for Figure 4 A three-dimensional sectional view along the AA direction;

[0029] Figure 6 for Figure 5 A magnified structural diagram of A in the diagram.

[0030] The labels in the diagram represent the following:

[0031] 1. Worktable; 2. Guide rail; 3. Slide; 4. Cutting machine; 5. Material guiding structure; 6. Slide rail; 7. Movable seat; 8. Mounting frame; 9. Connecting shaft; 10. Limiting roller; 11. Rotating shaft; 12. Rotation drive structure; 13. First drive motor; 14. First lead screw; 15. Second drive motor; 16. Second lead screw; 17. Chuck;

[0032] 121. Adjusting gear; 122. Gear plate; 123. Hydraulic cylinder. Detailed Implementation

[0033] 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.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, this utility model provides an automatic positioning laser tube cutting device, including a worktable 1, a guide rail 2 installed on the worktable 1, a slide 3 movably installed on the guide rail 2, a cutting machine 4 installed on the slide 3, the cutting machine 4 moving with the slide 3, and a material guiding structure 5 for the workpiece to pass through installed on the worktable 1.

[0035] The material guiding structure 5 includes a chuck 17, which is hollow and allows the workpiece to pass through. The discharge end of the chuck 17 is equipped with a clamp, which is mainly used to fix the workpiece. It adopts a commonly used clamp structure that can clamp and fix the workpiece. The chuck 17 itself can also be designed as a structure that moves along the workpiece transport direction, mainly used to drive the workpiece forward. The specific movement process of the chuck 17 can be completed by a motor screw drive or a cylinder drive. During the process of driving the workpiece forward, the clamp fixes the workpiece, and the chuck 17 drives the workpiece forward.

[0036] The bottom of the slide block 3 is provided with a slide rail 6, and symmetrical movable seats 7 are movably mounted on the slide rail 6. Several mounting frames 8 are installed inside the movable seats 7. Limiting rollers 10 are installed in the mounting frames 8 through connecting shafts 9. The workpiece is clamped between the limiting rollers 10. The mounting frames 8 are mounted on the movable seats 7 through rotating shafts 11. A rotation drive structure 12 is provided on the movable seats 7. The rotation drive structure 12 drives the mounting frames 8 to rotate through the rotating shafts 11, so that the rotation direction of the limiting rollers 10 deviates from the workpiece transport direction, and the rolling contact between the limiting rollers 10 and the workpiece is changed to sliding contact. The limiting rollers 10 play the role of fixing the workpiece in front and behind and left and right.

[0037] The material guiding structure 5 is generally set at the input end of the cutting station, directly below the cutting machine 4. The guide rail 2 is set along the transport direction of the workpiece. The complete workpiece is input from the material guiding structure 5 directly below the cutting machine 4. The limiting roller 10 is used to fix the workpiece left and right and front and back. After it is fixed, the cutting machine 4 cuts the workpiece. After the cutting is completed, the fixation of the workpiece is released, and one section of the cut workpiece falls under the action of gravity.

[0038] The slide block 3 can slide along the direction of the guide rail 2, thereby adjusting the relative position between the limiting roller 10 and the workpiece. Specifically, a second drive motor 15 is installed on the guide rail 2, and a second lead screw 16 is connected to the drive end of the second drive motor 15. The second lead screw 16 is threadedly engaged with the slide block 3 so that when the second drive motor 15 drives the second lead screw 16 to rotate, it drives the slide block 3 to slide on the guide rail 2.

[0039] Throughout the process, the workpiece, already inside the chuck 17, is first secured by the clamp in the guide structure 5. The chuck 17 then moves the workpiece forward. After moving a certain distance, the clamp releases, and the chuck 17 resets. At this point, the front end of the workpiece is close to the bottom of the cutting machine 4 and will not follow the chuck 17 back to its original position. After the chuck 17 resets, the clamp secures the workpiece and continues to move it forward. This cycle repeats to achieve forward transport of the workpiece. During this forward transport, when the workpiece reaches a specific position directly below the cutting machine 4, the movable seats 7 move closer together, causing the limiting rollers 10 to clamp the workpiece. At this point, the workpiece is fixed in the left-right direction. Then, the sliding seat 3 moves back and forth to adjust the relative position of the workpiece and the cutting machine 4 in the front-back direction. During the adjustment, the limiting rollers 10 roll relative to the workpiece. After the adjustment is complete, the limiting rollers 10 rotate, and the rolling contact between the limiting rollers 10 and the workpiece changes to a sliding contact. Under the sliding friction, the workpiece can no longer move back and forth, thus fixing the workpiece in the front-back direction. After the workpiece is fixed in the front-back and left-right directions, the cutting machine 4 performs laser cutting on the workpiece.

[0040] The above describes one way to adjust the position of the workpiece and the cutting machine 4, namely: moving the slide 3 back and forth while keeping the workpiece stationary. In practical applications, the position of the workpiece and the cutting machine 4 can also be adjusted by moving the workpiece back and forth while keeping the slide 3 stationary.

[0041] In this invention, an adjustable-direction limiting roller 10 is provided. When the rotation direction of the limiting roller 10 coincides with the workpiece transport direction, the limiting roller 10 clamps the workpiece and rolls with it, thus fixing the workpiece in the left-right direction. After adjusting the front-back position of the workpiece, the rotation direction of the limiting roller 10 deviates from the workpiece transport direction, and the limiting roller 10 slides with the workpiece, forming sliding friction, thus fixing the workpiece in the front-back direction. The same structure can achieve fixing of the workpiece in different directions, making the operation simpler.

[0042] In addition, by adjusting the friction between the limiting roller 10 and the workpiece, the workpiece can be fixed in the front-to-back direction. While ensuring that the workpiece is fixed in the left-to-right direction, the front-to-back fixation effect of the workpiece can be ensured, thereby ensuring the cutting effect of the workpiece.

[0043] In this invention, the angle of the limiting roller 10 is adjusted by rotating the drive structure 12, thereby adjusting the state between the limiting roller 10 and the workpiece. Specifically, as shown... Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the rotation drive structure 12 includes an adjusting gear 121 connected to the end of the rotating shaft 11 and a toothed plate 122 disposed on the side of the adjusting gear 121; the toothed plate 122 meshes with all the adjusting gears 121, and a hydraulic cylinder 123 is connected to the end of the toothed plate 122, and the hydraulic cylinder 123 is mounted on the movable seat 7.

[0044] The hydraulic cylinder 123 is connected to the toothed plate 122 at the drive end, so as to drive the toothed plate 122 to translate and adjust the gear 121 to rotate. The rotating shaft 11 drives the mounting frame 8 to rotate, thereby driving the connecting shaft 9 and the limiting roller 10 to rotate. When the connecting shaft 9 is set in the vertical direction, the limiting roller 10 can roll contact with the workpiece. When the connecting shaft 9 is set off from the vertical direction, the limiting roller 10 can slide contact with the workpiece.

[0045] The rotating shaft 11 is always horizontally positioned inside the movable seat 7. In order to further achieve the clamping effect of the workpiece in the front-back direction, the present invention also makes the following design: the rotating shaft 11 passes through and is threadedly assembled inside the movable seat 7.

[0046] In addition, a compressible and resilient rubber layer is provided on the outer periphery of the limiting roller 10. When the limiting roller 10 rolls into contact with the workpiece, the rubber layer is slightly squeezed. After the rotating shaft 11 is driven to rotate, the rotating shaft 11 moves forward in a spiral motion, thereby driving the mounting frame 8 and the limiting roller 10 to move forward in a spiral motion. Therefore, during the rotation of the limiting roller 10, not only does it rotate, but it also gets closer to the side wall of the workpiece, making the rubber layer squeezed more deeply. The positive pressure formed by the limiting roller 10 on the surface of the workpiece is greater, and the sliding friction it forms is sufficient to resist the relative movement that the workpiece may make in the front-back direction, thereby achieving the fixation of the workpiece in the front-back direction.

[0047] The slide rail 6 is arranged perpendicular to the transport direction of the workpiece, thereby fixing the workpiece in the left-right direction along the transport direction of the workpiece. To achieve opposite or opposite movements of the different movable seats 7, this utility model is designed as follows: Figure 2 As shown, a first drive motor 13 is provided on the slide rail 6, and a first lead screw 14 is connected to the drive end of the first drive motor 13.

[0048] The first lead screw 14 is divided into two threaded sections with opposite thread directions. The two threaded sections are threadedly engaged with the movable seat 7 respectively, so that when the first drive motor 13 drives the first lead screw 14 to rotate, it drives the movable seat 7 to move towards or away from each other, thereby causing the limiting rollers 10 on different movable seats 7 to move closer or further away from each other. When the limiting rollers 10 move closer to each other, the workpiece is gradually fixed in the left and right direction.

[0049] During use, when the workpiece is moved forward by the guide structure 5, when the workpiece reaches a specific position directly below the cutting machine 4, the first drive motor 13 drives the movable seats 7 to move closer to each other, so that the limiting roller 10 clamps the workpiece and fixes the workpiece in the left and right directions.

[0050] The second drive motor 15 drives the slide block 3 to move back and forth to adjust the relative position of the workpiece and the cutting machine 4 in the front and back direction. After adjustment, the limiting roller 10 rotates around the rotating shaft 11 as the central axis and is closer to the workpiece. The rolling contact between the limiting roller 10 and the workpiece is changed to sliding contact. Under the sliding friction, the workpiece can no longer move back and forth, thus fixing the workpiece in the front and back direction.

[0051] After the workpiece is fixed in the front-back and left-right directions, the cutting machine 4 performs laser cutting on the workpiece. After the cutting is completed, the first drive motor 13 is reset. After the workpiece is released from the fixation, it falls under the action of gravity. The second drive motor 15 and the hydraulic cylinder 123 are reset synchronously.

[0052] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An automatically positioned laser tube cutting device, characterized in that, Includes a workbench (1), on which a guide rail (2) is installed, on which a slide (3) is movably installed, on which a cutting machine (4) is installed, and on which a material guiding structure (5) for the workpiece to pass through is installed. The slide block (3) has a slide rail (6) at the bottom, and symmetrical movable seats (7) are movably installed on the slide rail (6). Several mounting frames (8) are installed inside the movable seats (7). Limiting rollers (10) are installed inside the mounting frames (8) through connecting shafts (9). The workpiece is clamped between the limiting rollers (10). The mounting frame (8) is mounted on the movable seat (7) via a rotating shaft (11). The movable seat (7) is provided with a rotating drive structure (12). The rotating drive structure (12) drives the mounting frame (8) to rotate via the rotating shaft (11), causing the rotation direction of the limiting roller (10) to deviate from the workpiece transport direction, and the rolling contact between the limiting roller (10) and the workpiece is changed to a sliding contact.

2. The automatically positioned laser tube cutting device according to claim 1, characterized in that, The rotation drive structure (12) includes an adjusting gear (121) connected to the end of the rotating shaft (11) and a toothed plate (122) disposed on the side of the adjusting gear (121). The toothed plate (122) meshes with all the adjusting gears (121). A hydraulic cylinder (123) is connected to the end of the toothed plate (122). The hydraulic cylinder (123) is mounted on the movable seat (7). The driving end of the hydraulic cylinder (123) is connected to the toothed plate (122) to drive the toothed plate (122) to translate and the adjusting gears (121) to rotate.

3. The automatically positioned laser tube cutting device according to claim 1, characterized in that, The slide rail (6) is arranged along the transport direction perpendicular to the workpiece.

4. The automatically positioned laser tube cutting device according to claim 3, characterized in that, The slide rail (6) is provided with a first drive motor (13), and the drive end of the first drive motor (13) is connected to a first lead screw (14). The first lead screw (14) is divided into two threaded sections with opposite thread directions. The two threaded sections are threadedly engaged with the movable seat (7) to drive the movable seat (7) to move towards or away from each other when the first lead screw (14) rotates.

5. The automatically positioned laser tube cutting device according to claim 1, characterized in that, The guide rail (2) is arranged along the transport direction of the workpiece; A second drive motor (15) is installed on the guide rail (2). The drive end of the second drive motor (15) is connected to a second lead screw (16). The second lead screw (16) is threadedly engaged with the slide block (3) so that when the second lead screw (16) rotates, it drives the slide block (3) to slide on the guide rail (2).

6. The automatically positioned laser tube cutting device according to claim 1, characterized in that, When the connecting shaft (9) is arranged in the vertical direction, the limiting roller (10) can roll into contact with the workpiece; When the connecting shaft (9) is set off from the vertical direction, the limiting roller (10) can slide in contact with the workpiece.

7. The automatically positioned laser tube cutting device according to claim 1, characterized in that, The rotating shaft (11) passes through and is threaded into the movable seat (7).

8. The automatically positioned laser tube cutting device according to claim 1, characterized in that, The material guiding structure (5) includes a chuck (17), which is hollow and allows the workpiece to pass through. The discharge end of the chuck (17) is equipped with a clamp.

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