Automatic feeding device and working method of laser tube cutting machine

Abstract

Automatic feeding device and working method for laser tube cutting machine. The invention relates to the technical field of industrial processing equipment, and in particular to the improvement of the feeding device of laser tube cutting machine. An automatic feeding device and working method for laser tube cutting machine are provided, including a frame, a storage rack, at least two feeding mechanisms, at least two height limiting devices and at least two clamping mechanisms, the frame includes two side frames, the tube axial position adjustment mechanism includes an end plate and a pushing device fixedly arranged on one side frame, and the pushing device is movably arranged on the other side frame of the frame. The present invention can provide the laser tube cutting machine with a tube supply with precise position and accurate quantity, and there is no need to adjust the tube position again before the subsequent tube cutting process, so that the processing efficiency of the laser tube cutting machine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial processing equipment, and in particular to the improvement of a feeding device of a laser tube cutting machine. Background Art

[0002] Laser tube cutting machine is a kind of efficient tube cutting processing equipment among the existing equipment. However, in order to further improve the processing efficiency of laser tube cutting machine, users often use automatic feeding device to match the laser tube cutting machine, so as to improve the efficiency by shortening the feeding time.

[0003] The patent document of the prior art with publication number: CN110900014A; name: A fully automatic loading laser tube cutting machine discloses a fully automatic loading laser tube cutting machine. This case aims to solve the problem of how to enable the laser tube cutting machine to achieve automatic loading, and the technical solutions proposed include: support frame, unloading frame, feeding belt... etc. Objectively speaking, the technical solution proposed in the comparative document can indeed realize the fully automatic loading of tubes for the laser tube cutting machine. However, in the process of transferring the tube from the chain drive feeding mechanism 5 → cylinder 6 → clamping mechanism 14, the adjustment of the position accuracy of the tube cannot be achieved. In the actual operation process, factors such as the speed uniformity of the transmission device and the inertia of the tube operation often lead to inconsistent positions of the tubes. In this way, the position of the clamping claws of the clamping mechanism to clamp the tube will be inconsistent, which makes it difficult to ensure the processing accuracy during the subsequent laser cutting.

[0004] In addition, under the condition of continuous pipe feeding, when the pipes are arranged closely on the chain drive feeding mechanism, how the lifting mechanism at the discharge port can ensure that the pipes are lifted according to the design requirements is also a technical problem that needs to be solved. Summary of the invention

[0005] In view of the above problems, the present invention provides an automatic feeding device and working method for a laser tube cutting machine.

[0006] The first technical problem to be solved is to ensure the position accuracy of the pipe in the X and Y directions;

[0007] The second technical problem to be solved is: being able to lift the pipes on the conveyor belt according to the design quantity requirements.

[0008] The technical solution of the present invention is: an automatic feeding device for a laser tube cutting machine, comprising a frame, a storage frame, at least two feeding mechanisms, at least two height limiting devices and at least two clamping mechanisms, the frame comprising two side frames, characterized in that a finger blocking device is provided between adjacent feeding mechanisms, a lifting mechanism is also provided on the side of the finger blocking device, and a tube axial position adjustment mechanism is provided between the two side frames of the frame;

[0009] The lifting mechanism includes an L-shaped support platform, a slide, a lifting guide rail and a linear drive mechanism, wherein the L-shaped support platform is arranged on the top surface of the slide, and the L-shaped support platform includes a platform and a vertical plate, wherein the height of the platform is lower than the upper surface of the feeding mechanism at the initial bottom limit position, and the vertical plate is arranged on the side of the platform facing the discharge port; the slide is connected to the lifting guide rail through a linear drive mechanism, and the lifting guide rail is connected to the frame;

[0010] The pipe axial position adjustment mechanism comprises an end plate fixedly arranged on one side of the vertical frame and a pushing device, and the pushing device is movably arranged on the other side of the vertical frame of the frame.

[0011] The pushing device includes a pushing baffle, a pushing bracket and a bracket movable seat, the pushing baffle is vertically connected to the top of the pushing bracket and corresponds to the axial position of the pipe; the pushing bracket is connected to the bracket movable seat; the bracket movable seat is connected to the frame through a movable seat guide rail, a chain is provided on the surface of the frame adjacent to the bracket movable seat, and the bracket movable seat is connected to the chain through a chain connecting block.

[0012] The pushing device comprises a pushing baffle and a pushing cylinder, wherein the pushing baffle is connected to the piston rod of the pushing cylinder; the pushing cylinder is horizontally connected to the stand on the other side of the frame, and the pushing baffle corresponds to the axial position of the pipe.

[0013] The end plate comprises a position regulating cylinder and an end plate, and the end plate is connected to the piston rod of the position regulating cylinder.

[0014] The platform of the L-shaped supporting platform is a horizontal roller column, and the vertical plate is a vertical roller column.

[0015] The clamping mechanism includes an upper clamping jaw, a lower clamping jaw, a clamping seat and an X-direction motion mechanism, the clamping seat has a Z-direction plane, the upper clamping jaw and the lower clamping jaw are movably connected to the clamping seat, the clamping seat is connected to the X-direction motion mechanism, and the X-direction motion mechanism is connected to a frame.

[0016] The finger-blocking device comprises a finger-blocking rod and a finger-blocking moving seat. The finger-blocking rod is arranged along the Z direction and fixedly connected to the finger-blocking moving seat. The finger-blocking moving seat is connected to the frame via a finger-blocking guide rail.

[0017] A supporting plate is arranged on the finger-blocking moving seat, and the top surface of the supporting plate is at the same height as the upper surface of the feeding mechanism.

[0018] A Y-direction crossbeam is disposed at the top of the frame, and at least two height limiting devices are hung below the lower portion of the crossbeam. The height limiting devices are connected to the crossbeam via a height adjustment connection mechanism.

[0019] A working method of an automatic feeding device of a laser tube cutting machine comprises the following steps:

[0020] 1) The pipe is pulled by the steel cable from the storage rack and sent into the feeding mechanism.

[0021] 2) At the entrance of the feeding mechanism, it is restrained by the height limiting device to prevent it from entering the feeding mechanism in a stacked form.

[0022] 3) The frontmost 1 or N pipes are limited in X direction by the finger blocking device.

[0023] 4) The lifting mechanism will lift one or N pipes that are limited.

[0024] 5) The clamping mechanism moves in the direction of the pipe discharge in the open state, and the Z-direction plane of the clamping mechanism pushes one or N pipes until one or N pipes contact the platform and vertical plate of the L-shaped support table, and then reset to complete the X-direction positioning.

[0025] 6) The pushing device starts and pushes the tail end of the pipe until the head end of the pipe contacts the end plate to complete the Y-axis positioning.

[0026] 7) The clamping mechanism moves toward the pipe discharging direction again, clamps the pipe, and continues to send it out in the pipe discharging direction.

[0027] 8) Reach the set position, complete.

[0028] The present invention can make the pipes move in the feeding direction in an orderly manner during operation, and accurately define the positions of the pipes in the X and Y directions through the X-direction positioning mechanism (finger-stop device 7) and the Y-direction positioning mechanism (pushing device 5, end plate 8), thereby ensuring that the pipes delivered by the clamping mechanism have a high position accuracy. In addition, in order to improve the transportation efficiency, the position of the finger-stop device in this case is adjustable, so that the lifting mechanism can lift different quantities of pipes according to the setting.

[0029] The present invention can provide a laser tube cutting machine with a tube supply with precise position and quantity, and there is no need to adjust the tube position again before subsequent tube cutting processing, so that the processing efficiency of the laser tube cutting machine can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional schematic diagram of the present invention,

[0031] Figure 2 It is a structural schematic diagram of the present invention,

[0032] Figure 3 yes Figure 2 AA section view,

[0033] Figure 4 yes Figure 2Middle BB section view,

[0034] Figure 5 yes Figure 2 Partial view from the middle C direction,

[0035] Figure 6 yes Figure 2 A partial enlarged view of the middle D part.

[0036] Figure 7 yes Figure 2 A partial enlarged view of the middle E part.

[0037] Figure 8 yes Figure 7 The left view of

[0038] Fig. 9 is a partial structural diagram of the second embodiment of the pushing device in the present invention,

[0039] Fig.10 is a schematic structural diagram of a second embodiment of a pushing device in the present invention,

[0040] Fig.11 is a three-dimensional schematic diagram of a second embodiment of the pushing device in the present invention,

[0041] Fig.12 yes Figure 2 A partial enlarged view of the middle F part.

[0042] Fig.13 The working principle of the quantitative delivery pipe of the present invention is Figure 1 ,

[0043] Fig.14 The working principle of the quantitative delivery pipe of the present invention is Figure 2 ,

[0044] Fig.15 The working principle of the quantitative delivery pipe of the present invention is Figure 3 ,

[0045] Fig.16 The working principle of the quantitative delivery pipe of the present invention is Figure 4 ,

[0046] Fig.17 : is a schematic structural diagram of an optimized embodiment of an L-shaped support platform in the present invention,

[0047] Fig.18 It is a structural schematic diagram of an optimized embodiment of the finger blocking device in the present invention.

[0048] exist Figure 1 The X, Y, and Z three-dimensional reference coordinate system is established.

[0049] exist Figure 2 The Y and Z reference coordinate systems are established in .

[0050] In the figure, 1 is a frame, 2 is a material storage rack, 21 is a steel cable, 3 is a feeding mechanism, and 4 is a height limiting device.

[0051] 5 is a pushing device, 51 is a pushing baffle, 52 is a pushing bracket, 53 is a bracket movable seat, 54 is a movable seat guide rail, 55 is a chain connecting block, 56 is a chain, 501 is a pushing cylinder,

[0052] 6 is a lifting mechanism, 61 is a slide seat, 62 is an L-shaped support platform, 63 is a gear rack transmission pair, 64 is a lifting guide rail, 65 is a roller column,

[0053] 7 is a finger blocking device, 71 is a finger blocking rod, 72 is a finger blocking motion seat, 73 is a finger blocking guide rail, 74 is an elastic protective sleeve, 75 is a support plate,

[0054] 8 is an end plate, 81 is an end plate sheet, 82 is a position adjustment cylinder,

[0055] 9 is a clamping mechanism, 91 is a Z-direction plane, and 10 is a pipe. DETAILED DESCRIPTION

[0056] The following is combined with Figure 1-18 To further explain the present invention, the present invention comprises a frame 1, a storage frame 2, at least two feeding mechanisms 3, at least two height limiting devices 4 and at least two clamping mechanisms 9, the frame 1 comprises two side frames, a finger blocking device 7 is provided between adjacent feeding mechanisms 3, a lifting mechanism 6 is further provided on the side of the finger blocking device 7, a pipe axial position adjustment mechanism is provided between the two side frames of the frame 1, and the feeding mechanism 3 is a conveyor belt that performs a rotary motion in the platform of the feeding mechanism;

[0057] The lifting mechanism 6 includes an L-shaped support platform 62, a slide 61, a lifting guide rail 64 and a linear drive mechanism. The linear drive mechanism adopts a gear rack transmission pair 63. The L-shaped support platform 62 is arranged on the top surface of the slide 61. The L-shaped support platform 62 includes a platform and a vertical plate. The height of the platform is lower than the upper surface of the feeding mechanism 3 at the initial bottom limit position. The vertical plate is arranged on the side of the platform facing the discharge port; the slide 61 is connected to the lifting guide rail 64 through the gear rack transmission pair 63, and the lifting guide rail 64 is connected to the frame 1;

[0058] The pipe axial position adjustment mechanism comprises an end plate 8 fixedly arranged on one side of the vertical frame and a pushing device 5 , and the pushing device 5 is movably arranged on the other side of the vertical frame of the frame 1 .

[0059] like Figure 7-8As shown, the first embodiment of the pushing device 5 includes a pushing baffle 51, a pushing bracket 52 and a bracket movable seat 53, the pushing baffle 51 is vertically connected to the top of the pushing bracket 52 and corresponds to the axial position of the pipe 10; the pushing bracket 52 is connected to the bracket movable seat 53; the bracket movable seat 53 is connected to the frame 1 through a movable seat guide rail 54, and a chain 56 is provided on the surface adjacent to the frame 1 and the bracket movable seat 53, the bracket movable seat 53 is connected to the chain 56 through a chain connecting block 55, and the chain 56 is parallel to the axial direction of the pipe 10, driving the pushing baffle 51 to do reciprocating motion in the Y direction, thereby positioning the pipe 10 in the Y direction. This embodiment is suitable for shorter pipes 10, and the longer stroke of this embodiment can be used to complete the positioning of the short pipe 10.

[0060] like Figure 9-11 As shown, the second embodiment of the pushing device 5 includes a pushing baffle 51 and a pushing cylinder 501, the pushing baffle 51 is connected to the piston rod of the pushing cylinder 501; the pushing cylinder 501 is horizontally connected to the stand on the other side of the frame 1, the pushing baffle 51 corresponds to the axial position of the pipe 10, the pushing cylinder 501 is parallel to the axial direction of the pipe 10, and drives the pushing baffle 51 to do reciprocating motion in the Y direction, thereby positioning the pipe 10 in the Y direction. This second embodiment is suitable for pipes 10 with a longer length, has a simple structure, is easy to control, and can complete the positioning of the pipe 10.

[0061] The end plate 8 includes a position adjusting cylinder 82 and an end plate 81 . The end plate 81 is connected to the piston rod of the position adjusting cylinder 82 and has the ability to serve as a positioning reference in the Y direction to assist in positioning the pipe 10 .

[0062] The platform of the L-shaped support platform 62 is a horizontal roller column, and the vertical plate is a vertical roller column, which is convenient for the tube 10 to form rolling friction during the axial positioning process, reduce scratches caused by displacement, and protect the surface of the tube 10.

[0063] The clamping mechanism 9 includes an upper clamping jaw, a lower clamping jaw, a clamping seat and an X-direction motion mechanism. The clamping seat has a Z-direction plane 91. The upper clamping jaw and the lower clamping jaw are movably connected to the clamping seat. The clamping seat is connected to the X-direction motion mechanism, and the X-direction motion mechanism is connected to the frame. The upper clamping jaw, the lower clamping jaw, the clamping seat and the X-direction motion mechanism are not marked in the accompanying drawings. These parts and mechanisms belong to the technology well known to those skilled in the art and will not be repeated here. However, when the clamping mechanism 9 is in the open and closed state, the Z-direction plane 91 of the clamping seat is exposed to push the pipe 10 in the X direction until the pipe 10 contacts the platform and the vertical plate of the L-shaped support table 62, thereby completing the positioning of the pipe 10 in the X direction.

[0064] The finger stop device 7 includes a finger stop rod 71 and a finger stop motion seat 72. The finger stop rod 71 is arranged along the Z direction and fixedly connected to the finger stop motion seat 72. The finger stop motion seat 72 is connected to the frame 1 through a stop guide rail 73. The finger stop device 7 can move back and forth in the X direction.

[0065] A support plate 75 is provided on the finger-blocking moving seat 72, and the top surface of the support plate 75 is flush with the upper surface of the feeding mechanism 3. When the finger-blocking device 7 moves toward the feeding mechanism 3, it can push the lower bottom surface of the special-shaped pipe 10 to improve the flatness of the special-shaped pipe 10, which is beneficial to the subsequent extraction work of the lifting mechanism 6.

[0066] A Y-direction beam is provided at the top of the frame 1, and at least two height limiting devices 4 are hung below the beam, and the height limiting devices 4 are connected to the beam through a height adjustment connection mechanism. The distance between the lower edge of the height limiting device 4 and the upper surface of the feeding mechanism 3 is slightly greater than an integral multiple of the diameter / height of the pipe 10, which can ensure that the pipe 10 at the feeding end is fed according to the design height requirement.

[0067] A working method of an automatic feeding device of a laser tube cutting machine comprises the following steps:

[0068] 1) The pipe 10 is pulled by the steel cable 21 from the storage rack 2 and fed into the feeding mechanism 3.

[0069] 2) At the entrance of the feeding mechanism 3, the materials are restrained by the height limiting device 4 to prevent them from entering the feeding mechanism 3 in a stacked form.

[0070] 3) The frontmost one or N pipes 10 are limited in the X direction by the finger blocking device 7.

[0071] 4) The lifting mechanism 6 lifts the 1 or N pipes 10 that are limited.

[0072] 5) The clamping mechanism 9 moves in the direction of the pipe discharging in the open state, and the Z-direction plane 91 of the clamping mechanism 9 pushes one or N pipes 10 until one or N pipes 10 contact the platform and the vertical plate of the L-shaped support table 62, and then reset to complete the X-direction positioning.

[0073] 6) The pushing device 5 starts to push the tail end of the pipe 10 until the head end of the pipe 10 contacts the end plate 8, completing the Y-axis positioning.

[0074] 7) The clamping mechanism 9 moves toward the pipe discharging direction again, clamps the pipe 10, and continues to deliver it in the pipe discharging direction.

[0075] 8) Reach the set position, complete.

[0076] The finger-blocking device 7 in the present invention can move forward and backward in the X direction, the lifting mechanism 6 can move up and down in the Z direction, and the pushing device 5 can move left and right in the Y direction. Through the movement coordination of the finger-blocking device 7 and the lifting mechanism 6, the position of the L-shaped support platform 62 in the lifting mechanism 6 protruding from the finger-blocking rod 71 in the X direction can accommodate the number of pipes 10 required by the design, and the lifting mechanism 6 moves upward along the Z direction, so that the lifting mechanism 6 can extract the number of pipes 10 required by the design. Then, a plurality of clamping mechanisms 9 are used to move in the X direction to push the pipe 10 to the root of the L-shaped support platform 62 to achieve the positioning of the pipe 10 in the X direction, and then the pipe axial position adjustment mechanism is used to position the pipe 10 in the Y direction. The present invention can provide the laser pipe cutting machine with pipes with accurate position and quantity, and the laser pipe cutting machine does not need to adjust the position of the pipe again before the subsequent pipe cutting process, so that the processing efficiency of the laser pipe cutting machine is improved.

[0077] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. An automatic feeding device for a laser tube cutting machine, comprising a frame, a material storage rack, at least two feeding mechanisms, at least two height limiting devices and at least two clamping mechanisms, wherein the frame comprises two side frames, characterized in that: A finger-blocking device is provided between adjacent feeding mechanisms, a lifting mechanism is also provided on the side of the finger-blocking device, and a pipe axial position adjustment mechanism is provided between the two side frames of the frame; The lifting mechanism includes an L-shaped support platform, a slide, a lifting guide rail and a linear drive mechanism, wherein the L-shaped support platform is arranged on the top surface of the slide, and the L-shaped support platform includes a platform and a vertical plate, wherein the height of the platform is lower than the upper surface of the feeding mechanism at the initial bottom limit position, and the vertical plate is arranged on the side of the platform facing the discharge port; the slide is connected to the lifting guide rail through a linear drive mechanism, and the lifting guide rail is connected to the frame; The pipe axial position adjustment mechanism comprises an end plate fixedly arranged on one side of the frame and a pushing device, and the pushing device is movably arranged on the other side of the frame; The clamping mechanism comprises an upper clamping jaw, a lower clamping jaw, a clamping seat and an X-direction motion mechanism, the clamping seat has a Z-direction plane, the upper clamping jaw and the lower clamping jaw are movably connected to the clamping seat, the clamping seat is connected to the X-direction motion mechanism, and the X-direction motion mechanism is connected to the frame; The finger blocking device comprises a finger blocking rod and a finger blocking motion seat, wherein the finger blocking rod is arranged along the Z direction and is fixedly connected to the finger blocking motion seat, and the finger blocking motion seat is connected to the frame via a blocking guide rail; A support plate is provided on the finger moving seat, and the top surface of the support plate is at the same height as the upper surface of the feeding mechanism; Through the movement coordination of the finger stop device and the lifting mechanism, the position of the L-shaped support platform in the lifting mechanism protruding from the finger stop rod in the X direction can accommodate the number of pipes required by the design, and the lifting mechanism moves upward along the Z direction, so that the lifting mechanism can extract the number of pipes required by the design.

2. The automatic feeding device of the laser tube cutting machine according to claim 1 is characterized in that: The pushing device includes a pushing baffle, a pushing bracket and a bracket movable seat, the pushing baffle is vertically connected to the top of the pushing bracket and corresponds to the axial position of the pipe; the pushing bracket is connected to the bracket movable seat; the bracket movable seat is connected to the frame through a movable seat guide rail, a chain is provided on the surface of the frame adjacent to the bracket movable seat, and the bracket movable seat is connected to the chain through a chain connecting block.

3. The automatic feeding device of the laser tube cutting machine according to claim 1 is characterized in that: The pushing device comprises a pushing baffle and a pushing cylinder, wherein the pushing baffle is connected to the piston rod of the pushing cylinder; the pushing cylinder is horizontally connected to the stand on the other side of the frame, and the pushing baffle corresponds to the axial position of the pipe.

4. The automatic feeding device of the laser tube cutting machine according to claim 1 is characterized in that: The end plate comprises a position regulating cylinder and an end plate, and the end plate is connected to the piston rod of the position regulating cylinder.

5. The automatic feeding device of the laser tube cutting machine according to claim 1 is characterized in that: The platform of the L-shaped supporting platform is a horizontal roller column, and the vertical plate is a vertical roller column.

6. The automatic feeding device of the laser tube cutting machine according to claim 1, characterized in that: A Y-direction crossbeam is disposed at the top of the frame, and at least two height limiting devices are hung below the lower portion of the crossbeam. The height limiting devices are connected to the crossbeam via a height adjustment connection mechanism.

7. The working method of the automatic feeding device of a laser tube cutting machine according to any one of claims 1 to 6, characterized in that: The following steps are involved: 1) The pipe is pulled by the steel cable from the storage rack and sent into the feeding mechanism. 2) At the entrance of the feeding mechanism, it is restrained by the height limiting device to prevent it from entering the feeding mechanism in a stacked form. 3) The frontmost N pipes are limited in the X direction by the finger-stop device. 4) The lifting mechanism will lift the N pipes that are limited. 5) The clamping mechanism moves in the direction of the pipe discharge in the open state, and the Z-direction plane of the clamping mechanism pushes N pipes until the N pipes contact the platform and the vertical plate of the L-shaped support table, and then reset to complete the X-direction positioning. 6) The pushing device starts and pushes the tail end of the pipe until the head end of the pipe contacts the end plate to complete the Y-axis positioning. 7) The clamping mechanism moves toward the pipe discharging direction again, clamps the pipe, and continues to send it out in the pipe discharging direction. 8) Reach the set position, complete.

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