Short-tailing laser pipe cutting machine

Abstract

The utility model belongs to the technical field of laser pipe cutting machines, and discloses a short tailing laser pipe cutting machine which comprises a machine frame, a supporting frame, a front chuck, a rear chuck and a chuck sliding rail arranged in the length direction of the machine frame, the front chuck and the rear chuck are coaxially arranged and both connected with the chuck sliding rail in a sliding mode, and the supporting frame is arranged in the width direction of the machine frame and located above the machine frame. The two ends of the chuck sliding rail are located on the two sides of the supporting frame correspondingly, and a laser cutting device is arranged on the supporting frame. The double chucks are adopted for clamping and cutting the pipe, the front chuck can move in an offside mode, the front chuck and the rear chuck are located between laser cutting devices, the two ends of a short material are clamped, and cutting stability is improved. Furthermore, the rear chuck moves into the front chuck, and the clamping jaws extend out of the clamping surface of the front chuck, so that the tailings can be cut, the cutting treatment of the short tailings is met, the pipe waste is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser tube cutting machines, and in particular relates to a short-tail material laser tube cutting machine. Background Art

[0002] At present, the main structure of the laser tube cutting machine includes a frame and a laser cutting head, a front chuck and a rear chuck installed on the frame. The front and rear chucks are used to position and drive the tube. The rear chuck often cannot be fully moved under the laser cutting head, resulting in the tube between the front and rear chucks becoming tail material, thereby causing waste of tube material. Therefore, it is urgent to optimize the existing structure of the laser tube cutting machine, so that the rear chuck can be fully moved under the laser cutting head by the offside of the front chuck (over the laser cutting head), thereby achieving the cutting of short tail materials, reducing tube waste and reducing production costs. Utility Model Content

[0003] In view of the deficiencies in the background technology, the utility model provides a short-tail laser tube cutting machine, which enables the end of the rear chuck to be completely moved below the laser cutting head by overstepping the front chuck (overstepping the laser cutting head), thereby achieving the cutting of short-tail materials, reducing tube waste and lowering production costs.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A short tail material laser tube cutting machine, characterized in that it includes a frame, a support frame, a front chuck, a rear chuck and a chuck slide rail arranged along the length direction of the frame, the front chuck and the rear chuck are coaxially arranged and are both slidably connected to the chuck slide rail, the support frame is arranged along the width direction of the frame and is located above the frame, the two ends of the chuck slide rail are respectively located on both sides of the support frame, and a laser cutting device is provided on the support frame.

[0006] Preferably, the rear chuck is connected to a driving motor, the output shaft of the driving motor is connected to a gear, the gear is meshed with a rack arranged on the frame, and the rack is arranged parallel to the chuck slide rail.

[0007] Preferably, an offside cylinder is connected to the side of the front chuck close to the rear chuck, and the offside cylinder drives the front chuck to move along the chuck slide rail so that the front chuck is located between the support frame and the rear chuck, or on the side of the support frame away from the rear chuck.

[0008] Preferably, the frame is provided with a feeding mechanism for supporting the pipes and a feeding mechanism for cutting and unloading the pipes, and the feeding mechanism and the feeding mechanism are respectively located at the feeding side and the unloading side of both sides of the support frame.

[0009] Preferably, the blanking mechanism includes at least two groups of blanking devices evenly spaced apart. Each blanking device includes a fixed seat, a swing arm, and a blanking cylinder. One end of the swing arm is rotatably connected to the fixed seat, and the other end is connected with a pneumatic gripper. The blanking cylinder is hinged to the fixed seat, and its output shaft is hinged to the end of the swing arm away from the fixed seat.

[0010] Preferably, the pneumatic gripper is hinged to the end of the swing arm through a rotating shaft, and a support rod is hinged between it and the fixed seat.

[0011] Preferably, a vertical rotating shaft is rotatably connected to the inner side of each gripper of the pneumatic gripper, and a horizontal rotating shaft is rotatably connected to the side of the pneumatic gripper close to the swing arm.

[0012] Preferably, a limiting component for restricting the rising height of the swing arm is provided on one side of each group of blanking devices. The limiting component includes a limiting slide rail on one side of the fixed seat, a limiting slider slidably connected to the limiting slide rail, a wedge-shaped limiting block provided on the limiting slider, and a limiting roller rotatably connected to one side of the swing arm. The limiting roller is located directly below the wedge-shaped limiting block and cooperates with the inclined surface at its bottom end.

[0013] Preferably, a linkage rod that sequentially connects the limiting sliders of each group of limiting components is connected to the limiting slider of each group of limiting components, and a linkage driving device for driving it to perform reciprocating linear motion is provided at one end of the linkage rod.

[0014] Preferably, the blanking mechanism includes a vertical plate and a blanking plate. One side of the vertical plate is horizontally slidably connected to the chuck slide rail, and a vertically arranged lifting slide rail is provided on the other side. A lifting frame is slidably connected to the lifting slide rail, and a lifting cylinder is connected to the lower end of the lifting frame. The blanking plate is installed on the lifting frame.

[0015] Preferably, one side of the blanking plate is hinged to the lifting frame, and a blanking cylinder is hinged between the bottom of the blanking plate and the lifting frame.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] (1) The present utility model uses a double chuck to clamp and cut the pipe. The position of the front chuck can be moved in an offside manner, so that the front chuck and the rear chuck are located between the laser cutting devices, realizing the clamping of both ends of the short material and improving the cutting stability. Further, the rear chuck moves inside the front chuck and extends the jaws out of the clamping surface of the front chuck, so that the tail material can also be cut, meeting the cutting treatment of short tail materials, reducing pipe waste, and lowering production costs.

[0018] (2) The feeding side of the present utility model is provided with a material pushing mechanism, and the discharging side is provided with a discharging mechanism. The heights of the material pushing mechanism and the discharging mechanism can be adjusted according to actual needs to meet the cutting requirements of pipes with different specifications and shapes, so as to ensure that the pipe is always on the same central axis as the front and rear chucks during the processes of movement, rotation and cutting, thereby ensuring the cutting accuracy of the product and the stability of the cutting process;

[0019] (3) The pneumatic jaws of multiple groups of material pushing devices of the present utility model are linked and controlled by a single motor, effectively reducing the manufacturing cost of the equipment. Moreover, the material pushing cylinders of each material pushing device work independently without interference; when the rear chuck is retracting, the feeding process of the next pipe can be carried out simultaneously, saving time and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives and advantages of the present utility model will become more obvious.

[0021] Figure 1 It is a schematic structural diagram of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the present utility model from another perspective;

[0023] Figure 3 It is for the present utility model Figure 1 The enlarged structural diagram at position A in the present utility model;

[0024] Figure 4 It is for the present utility model Figure 2 The enlarged structural diagram at position B in the present utility model;

[0025] Figure 5 It is a schematic series connection structure diagram of multiple groups of material pushing devices of the present utility model;

[0026] Figure 6 It is a schematic structural diagram of a single group of material pushing devices of the present utility model;

[0027] Figure 7 It is a schematic bottom structure diagram of a single group of material pushing devices of the present utility model;

[0028] Figure 8 It is a schematic structural diagram of the discharging mechanism of the present utility model;

[0029] Figure 9 It is a schematic bottom structure diagram of the discharging mechanism of the present utility model;

[0030] In the figure: 1. Frame, 101. Chuck slide rail, 102. Rack, 2. Support frame, 3. Front chuck, 4. Rear chuck, 5. Laser cutting device, 6. Driving motor, 7. Offside cylinder, 8. Pushing device, 801. Fixed seat, 802. Swing arm, 803. Pushing cylinder, 804. Pneumatic gripper, 805. Rotating shaft, 806. Support rod, 807. Vertical rotating shaft, 808. Horizontal rotating shaft, 9. Material discharging mechanism, 901. Vertical plate, 902. Material discharging plate, 903. Lifting slide rail, 904. Lifting frame, 905. Lifting cylinder, 906. Material discharging cylinder, 907. Roller, 10. Limit slide rail, 11. Limit slider, 12. Wedge-shaped limit block, 1201. Inclined surface, 13. Limit roller, 14. Linking rod, 15. Linking driving device, 16. Alignment baffle plate. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Such as Figure 1 、 Figure 2As shown in the figure, a short-tail laser tube cutting machine includes a frame 1, a support frame 2, a front chuck 3, a rear chuck 4, and a chuck slide rail 101 horizontally arranged along the length direction of the frame. The front chuck and the rear chuck are coaxially arranged and are both slidably connected to the chuck slide rail. The support frame is arranged along the width direction of the frame and is located above the frame. The two ends of the chuck slide rail are respectively located on both sides of the support frame. A laser cutting device 5 is provided on the support frame. When cutting a normal-length pipe, the laser cutting device on the support frame is located on the side of the front chuck away from the rear chuck; when cutting a short-tail pipe, the front chuck is moved away from the rear chuck, so that the laser cutting device is located between the front chuck and the rear chuck (the front chuck is out of position). At this time, by adjusting the distance between the rear chuck and the laser cutting device, the cutting of the short-tail material can be completed, thereby reducing pipe waste and lowering production costs. The outer diameter of the rear chuck is smaller than the inner diameter of the front chuck. The rear chuck can extend into the front chuck and the jaws can extend out of the clamping surface of the front chuck, so that the tail material can also receive the cutting operation, to meet the cutting treatment of the short-tail material, reduce pipe waste, and lower production costs. The laser cutting device mainly includes a laser, a laser cutting head, a lift, etc., and is electrically connected to the control system of the pipe cutting machine. In this embodiment, the lift can control the laser cutting head to move in the X-axis (the axial direction of the front and rear chucks) and the Z-axis (the width direction of the frame). The operations of clamping and rotating the pipe by the front chuck and the rear chuck are all prior arts and will not be elaborated here.

[0035] Combined with Figure 3 and Figure 4 As shown in the figure, a driving motor 6 is connected to the rear chuck. The output shaft of the driving motor is connected to a gear (not shown in the figure). The gear meshes with a rack 102 provided on the frame. The rack is arranged parallel to the chuck slide rail. By using the meshing of the gear and the rack, the driving motor drives the gear to rotate, so as to control the rear chuck to slide along the chuck slide rail and adjust the distance between the rear chuck and the front chuck and the laser cutting device. A displacement cylinder 7 is connected to the side of the front chuck close to the rear chuck. The displacement cylinder drives the front chuck to move along the chuck slide rail, so that the front chuck is located between the support frame and the rear chuck, or on the side of the support frame away from the rear chuck. In this embodiment, there are two displacement cylinders in total, which are distributed at intervals up and down to ensure the stability of the movement of the front chuck. When the front chuck is located on the side of the support frame away from the rear chuck, the cutting of the short-tail material can be realized.

[0036] Since the pipe is relatively long, the pipe will bend due to its own gravity. On the frame of this cutting machine, there is a top material mechanism for supporting the pipe and a blanking mechanism 9 for cutting and blanking. The top material mechanism and the blanking mechanism are respectively located on the feeding side and the blanking side on both sides of the support frame, and can effectively support the pipe, so that the pipe is always on the same central axis as the front and rear chucks, thereby ensuring the cutting accuracy and the stability of the cutting process. After cutting, the blanking operation is realized by using the blanking mechanism.

[0037] AsFigures 5 to 7 As shown, the blanking mechanism includes at least two groups of blanking devices 8 evenly spaced apart. The multiple groups of blanking devices are at the same height and lower than the heights of the rear chuck and the front chuck, so that during the retraction of the rear chuck, the blanking mechanism can still be loaded, and the two do not interfere with each other, thereby improving work efficiency. The blanking device includes a fixed seat 801, a swing arm 802, and a blanking cylinder 803. One end of the swing arm is rotatably connected to the fixed seat, and the other end is connected with a pneumatic gripper 804. The pneumatic gripper can clamp the pipe between its two jaws. A vertical rotating shaft 807 is rotatably connected to the inner side of each jaw of the pneumatic gripper, and a horizontal rotating shaft 808 is rotatably connected to the side of the pneumatic gripper close to the swing arm, facilitating the movement and rotation of the pipe and other actions, ensuring the smoothness and stability of the pipe cutting process. The blanking cylinder is hinged to the fixed seat, and its output shaft is hinged to the end of the swing arm away from the fixed seat. When the output shaft of the blanking cylinder extends, it can drive the swing arm to swing upward along the fixed seat to effectively support the pipe. The pneumatic gripper is hinged to the end of the swing arm through a rotating shaft 805, and a support rod 806 is hinged between it and the fixed seat, which can effectively prevent the rising trajectory of the pneumatic gripper from being arc-shaped with the swing arm. The setting of the support rod can make the pneumatic gripper in a horizontal state during the rising process, that is, the two vertical rotating shafts at the upper end remain vertical. In order to facilitate the end positioning during the pipe loading process, an alignment baffle 16 is provided on one side of the blanking device farthest from the front chuck. The vertical cross-section of the alignment baffle is L-shaped.

[0038] As Figures 5 to 7 ​As shown, a limit assembly for limiting the rising height of the swing arm is provided on one side of each group of the lifting device, the limit assembly includes a limit rail 10 located on one side of the fixed seat, a limit slider 11 slidably connected to the limit rail, a wedge-shaped limit block 12 provided on the limit slider, and a limit roller 13 rotatably connected to one side of the swing arm. The limit roller is located directly below the wedge-shaped limit block and cooperates with the inclined surface 1201 at its bottom end. When the swing arm swings upward along the fixed seat driven by the lifting cylinder until the limit roller contacts the inclined surface and stops, the upward swing height of the swing arm is limited. Since the bottom end surface of the wedge-shaped limit block is an inclined surface, the highest point position of the limit roller can be adjusted by changing the position of the wedge block, ensuring that the height of the swing arm of each group of top-feeding devices remains consistent. In order to achieve the linkage adjustment of each group of top-feeding devices, a linkage rod 14 is connected to the limit slider of each group of limit assemblies, and one end of the linkage rod is provided with a linkage drive device 15 that drives it to achieve reciprocating linear motion. The linkage rod drives the wedge-shaped limit block of each group of top-feeding devices to move synchronously, thereby ensuring that the height of the swing arm of each group of top-feeding devices remains consistent. The linkage drive device is a power device that realizes the linear reciprocating motion of the linkage rod. It is a prior art. In this embodiment, the linkage drive device mainly includes a positioning member, a sliding member, a lead screw and a motor. The end of the linkage rod is connected to the sliding member, and the sliding member is slidably connected to the positioning member and is threadedly connected to the lead screw. The motor drives the lead screw to rotate, thereby driving the horizontal sliding of the sliding member. When cutting the other side tube, the limit assembly can be used to adjust the height of each ejecting device in real time, so that the height of the solution is always consistent with the front and rear axes during the rotation process, and the lifting of each ejecting device is independently controlled. During the movement of the rear chuck, the lifting of each ejecting device can be adjusted according to actual needs, and the two do not interfere with each other.

[0039] like Figure 8 and Figure 9As shown in the figure, the blanking mechanism is connected to the front chuck and can move synchronously with the movement of the front chuck. It includes a vertical plate 901 and a blanking plate 902. One side of the vertical plate is horizontally slidably connected to the chuck slide rail, and the other side is provided with a vertically arranged lifting slide rail 903. A lifting frame 904 is slidably connected to the lifting slide rail. The lower end of the lifting frame is connected to a lifting cylinder 905. The blanking plate is installed on the lifting frame. The lifting cylinder drives the lifting frame to perform up and down lifting movements, so as to ensure that the upper end face of the blanking plate continuously and stably supports the pipe, and its height can also change synchronously in real time during the rotary cutting of the pipe (mainly for square pipes). In order to ensure that the product moves more smoothly on the blanking plate, a plurality of strip-shaped mounting holes are evenly spaced along the length direction of the blanking plate, and a roller shaft 907 is rotatably installed inside to reduce the friction between the pipe and the upper end face of the blanking plate. The cut pipe falls on the blanking plate. One side of the blanking plate is hinged to the lifting frame, and a blanking cylinder 906 is hinged between the bottom of the blanking plate and the lifting frame. The blanking cylinder can be used to drive the lifting of the blanking plate away from one side of the lifting frame. When its height decreases, the pipe rolls off the blanking plate and falls into a preset pipe aggregate bin or rack.

[0040] The laser pipe cutting machine of the present utility model further includes a control system. In this application, each driving component such as motors and cylinders is electrically connected to the control system to achieve PLC automatic control, ensure the stability and smoothness of the cutting process, and improve work efficiency.

[0041] The working principle of the present utility model is as follows:

[0042] As Figures 1 to 9As shown, in the starting state, the rear chuck 4 and the front chuck 3 are on the same side of the laser cutting device 5. An auxiliary loading machine is used to transfer the pipe to be cut to the blanking mechanism, that is, into the pneumatic grippers 804 of each group of blanking devices 8. The linkage driving device 15 controls the linkage rod 14 to drive each wedge-shaped limit block 12 to move, restricting the elevation of each swing arm 802. Then the blanking cylinder 803 works to drive the swing arm 802 to rise, so that the pipe is on the same central axis as the rear chuck 4 and the front chuck 3. The front chuck 3 and the rear chuck 4 are used to clamp the pipe and drive it to move, so that the length of the pipe on the blanking side is consistent with the preset cutting length, and the pipe on the blanking side is pressed against the blanking plate 902. Then the laser cutting device 5 is used to cut the pipe. After cutting, the output shaft of the blanking cylinder 906 contracts to assist the pipe in blanking. When cutting short tail materials with shorter lengths, the overrun cylinder 7 is used to drive the front chuck 3 to drive the blanking mechanism 9 to move, so that the front chuck 3 and the rear chuck 4 are respectively on both sides of the laser cutting device 5. At this time, by moving the position of the rear chuck 4, the distance between the rear chuck 4 and the laser cutting device 5 can be further reduced to meet the cutting requirements of short tail materials. The outer diameter of the rear chuck is smaller than the inner diameter of the front chuck. When cutting the tail material, the rear chuck can move into the front chuck and extend the jaws out of the clamping surface of the front chuck, so that the tail material can also be cut, to meet the cutting treatment of short tail materials, reduce pipe waste, and reduce production costs; after a complete pipe is cut, the rear chuck 4 is moved away from the front chuck, and at the same time, the next pipe is loaded onto the blanking mechanism. When the rear chuck 4 moves to the initial position, the above operation steps are repeated.

[0043] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A short-tail material laser pipe cutting machine, characterized in that: It includes a frame, a support frame, a front chuck, a rear chuck, and a chuck slide rail arranged along the length direction of the frame. The front chuck and the rear chuck are coaxially arranged and are both slidably connected to the chuck slide rail. The support frame is arranged along the width direction of the frame and is located above the frame. The two ends of the chuck slide rail are respectively located on both sides of the support frame. A laser cutting device is provided on the support frame.

2. The short-tail material laser pipe cutting machine according to claim 1, characterized in that: A driving motor is connected to the rear chuck. The output shaft of the driving motor is connected with a gear, and the gear meshes with a rack arranged on the frame. The rack is arranged parallel to the chuck slide rail.

3. A short-tail material laser tube cutting machine according to claim 1, characterized in that: A offside cylinder is connected to the side of the front chuck close to the rear chuck. The offside cylinder drives the front chuck to move along the chuck slide rail, so that the front chuck is located between the support frame and the rear chuck, or on the side of the support frame far from the rear chuck.

4. A short-tail material laser pipe cutting machine according to claim 1, characterized in that: A blanking mechanism for pipe support and a blanking mechanism for cutting and blanking are provided on the frame. The blanking mechanism for pipe support and the blanking mechanism for cutting and blanking are respectively located on the loading side and the blanking side on both sides of the support frame.

5. A short-tail material laser tube cutting machine according to claim 4, characterized in that: The blanking mechanism for pipe support includes at least two groups of blanking devices evenly spaced. The blanking device includes a fixed seat, a swing arm, and a blanking cylinder. One end of the swing arm is rotatably connected to the fixed seat, and the other end is connected with a pneumatic gripper. The blanking cylinder is hinged to the fixed seat, and its output shaft is hinged to the end of the swing arm far from the fixed seat.

6. The short-tail material laser pipe cutting machine according to claim 5, wherein: The pneumatic gripper is hinged to the end of the swing arm through a rotating shaft, and a support rod is hinged between it and the fixed seat.

7. A short-tail laser tube cutting machine according to claim 5, characterized in that: A limiting component for restricting the rising height of the swing arm is provided on one side of each group of blanking devices. The limiting component includes a limiting slide rail on one side of the fixed seat, a limiting slider slidably connected to the limiting slide rail, a wedge-shaped limiting block arranged on the limiting slider, and a limiting roller rotatably connected to one side of the swing arm. The limiting roller is located directly below the wedge-shaped limiting block and cooperates with the inclined surface at its bottom end.

8. The short-tail material laser pipe cutting machine according to claim 7, characterized in that: A linkage rod that sequentially connects them is connected to the limiting slider of each group of limiting components. A linkage driving device for driving it to perform reciprocating linear motion is provided at one end of the linkage rod.

9. A short-tail laser tube cutting machine according to claim 4, characterized in that: The blanking mechanism for cutting and blanking includes a vertical plate and a blanking plate. One side of the vertical plate is horizontally slidably connected to the chuck slide rail, and a vertical lifting slide rail is provided on the other side. A lifting frame is slidably connected to the lifting slide rail. A lifting cylinder is connected to the lower end of the lifting frame. The blanking plate is installed on the lifting frame.

10. A short-tail laser tube cutting machine according to claim 9, characterized in that: One side of the blanking plate is hinged to the lifting frame, and a blanking cylinder is hinged between the bottom of the blanking plate and the lifting frame.

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