A stable fully automatic pipe cutting machine

Abstract

The present invention discloses a stable fully automatic pipe cutting machine related to the field of pipe processing technology. It comprises: a main body, a laser generator is installed on the main body, a chuck is installed on the main body, a chuck is installed on the chuck, and a sliding disk is installed on the chuck; a plurality of sliding blocks evenly distributed circumferentially, all of which are limitedly slidably connected to the sliding disk, the sliding block is fixedly connected to a mounting block, and the mounting block is limitedly slidably connected to a sliding frame; a plurality of groups of connecting parts evenly distributed circumferentially, respectively fixed to adjacent sliding frames, the connecting parts are hinged with folding plates, and the folding plates in the same group are hinged with elastic strips. The present invention wraps the circular pipes with elastic strips to increase the force-bearing area of ​​the circular pipes, thereby dispersing the extrusion force applied to the circular pipes, avoiding the deformation of the circular pipes caused by excessive local stress, thereby ensuring the positioning accuracy of the circular pipes and the accuracy of laser cutting.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, and in particular to a stable full-automatic pipe cutting machine. Background Art

[0002] Laser tube cutting machine is a kind of equipment which uses high energy density laser beam to cut metal tubes or non-metal tubes. It is equipped with a chuck system for clamping and fixing tubes to ensure that the tubes will not move or shake during the cutting process, thereby ensuring the cutting accuracy and quality. The chuck system can be divided into single chuck, double chuck and multi-chuck according to factors such as the purpose of the laser tube cutting machine. The double chuck clamping system includes two sets of power elements, front chuck and rear chuck. The front chuck is used to support the tube, and the rear chuck is usually a four-claw chuck used to clamp, fix and move the tube.

[0003] The existing four-jaw chuck can clamp both square tubes and round tubes. However, when the four-jaw chuck is used to clamp and fix a thin-walled round tube, since the contact area between the four jaws of the four-jaw chuck and the round tube is only line contact, when the chuck is used to clamp the round tube, the extrusion force of the jaws on the round tube is concentrated on one line, resulting in concentrated force on the round tube, which can easily cause the round tube to deform and affect the roundness of the round tube. At the same time, affected by the gravity of the round tube itself, the extrusion force of the four-jaw chuck on different parts of the round tube is different. When the round tube is deformed due to concentrated force, the deformation amount of the round tube at different circumferential parts is different, resulting in the deviation of the central axis of the round tube, causing the round tube to tilt, resulting in reduced subsequent cutting accuracy. Summary of the invention

[0004] The invention provides a stable full-automatic pipe cutting machine to overcome the disadvantage that when a four-claw chuck is used to clamp a round pipe, the round pipe is easily deformed, resulting in reduced cutting accuracy.

[0005] The technical solution is as follows: A stable fully automatic pipe cutting machine comprises: a main body, a laser generator is installed on the main body, a clamping seat is installed on the clamping seat, and a sliding disk is installed on the chuck; a plurality of sliding blocks evenly distributed circumferentially are all limitedly slidably connected to the sliding disk, a plurality of power elements are arranged in the chuck and are respectively used to provide power for adjacent sliding blocks, the sliding block is fixedly connected to a mounting block, the mounting block is limitedly slidably connected to a sliding frame, the sliding frame is slidably connected to claws, and a plurality of claws are used to clamp and fix the pipe fittings; a plurality of groups of connecting members evenly distributed circumferentially are respectively fixedly connected to adjacent sliding frames, and the number of the connecting members in each group is at least two, a folding plate is hinged on a side of the connecting member away from the adjacent sliding frame, and the folding plates in the same group are jointly hinged with an elastic strip, the elastic strip is in contact with and cooperates with adjacent claws, and the elastic strip is used to increase the force area when clamping the circular pipe fittings.

[0006] Furthermore, an elastic member fixedly connected to the adjacent folding plate is fixedly provided on the connecting member, and the elastic coefficient of the elastic member is greater than the elastic coefficient of the elastic strip, and is used to maintain the straight state of the elastic strip. A reset column is slidably connected to the claw, and a spring is fixedly provided between the two, and the reset column is squeezed and fitted with the adjacent mounting block.

[0007] Furthermore, a residual inclined surface is arranged on the clamping claw.

[0008] Furthermore, the thicknesses of adjacent mounting blocks are different, and adjacent claws are staggered.

[0009] Furthermore, it also includes: a plurality of identification components, which are respectively arranged in adjacent claws for distinguishing square pipes and round pipes, and the identification components include: symmetrically distributed detection columns, which are slidably connected to adjacent claws at positions close to the central axis of the sliding disk, and the detection columns pass through adjacent elastic strips; a swinging member, which is limitedly slidably connected to adjacent claws, and a tension spring is fixedly connected therebetween, the detection column is limitedly slidably connected to the adjacent swinging member, the swinging member is rotatably connected to a transmission rod slidably connected to the adjacent claw, a limited block is slidably connected in the claw, a sliding groove is provided on the limit block, the transmission rod slides in the adjacent sliding groove, and a limit groove is provided on the sliding frame for limiting the position of the adjacent limit block.

[0010] Furthermore, the distance that the limit block can move is equal to the length of the detection column protruding from the adjacent elastic strip, so that when the detection column moves to the limit position, the detection column and the adjacent elastic strip are coplanar.

[0011] Furthermore, the distance between the limit block and the upper limit groove of the adjacent sliding frame is greater than the depth of the upper limit groove of the sliding frame.

[0012] Furthermore, an extrusion block is slidably connected inside the sliding frame, and the extrusion block is frictionally matched with the adjacent claws. The mounting block is provided with an inclined surface that is extrusion-matched with the adjacent extrusion block, and the inclined surface is used to push the adjacent extrusion block to move. A limiting ball is slidably connected inside the mounting block, and a spring is fixed between the two, and the sliding frame is provided with a groove that is limitedly matched with the adjacent limiting ball.

[0013] Furthermore, a plurality of elastic friction plates are fixedly connected to one side of the elastic strip close to the central axis of the sliding disk, and the elastic friction plates extend out of the adjacent elastic strips to increase the friction force when the elastic strips clamp the pipe fittings.

[0014] Furthermore, a sensor is mounted on the mounting block, and the sensor is in contact with the adjacent reset column.

[0015] The advantages and positive effects of the present invention compared with the prior art are: the present invention wraps the circular tube with an elastic strip, thereby increasing the force-bearing area of ​​the circular tube, thereby dispersing the extrusion force applied to the circular tube, avoiding the deformation of the circular tube due to excessive local stress, thereby ensuring the positioning accuracy of the circular tube and the accuracy of laser cutting.

[0016] The shape of the pipe to be clamped is determined by the number of squeezed columns and the squeezed distance, and then a suitable clamping method is selected to clamp the pipe.

[0017] The clamping claw and the sliding frame are combined together through the extrusion block, so that the installation block, the sliding frame and the clamping claw are combined into a whole, and then the clamping claw, the folding plate and the elastic strip move together to apply extrusion force to the circular pipe fitting, thereby improving the uniformity of the extrusion force on the circular pipe fitting and further improving the stability when clamping the circular pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the chuck seat and the sliding plate of the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the pressing plate, the sliding block and the mounting block of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping claw, the connecting piece and the folding plate of the present invention;

[0022] Figure 5 It is a three-dimensional structural cross-sectional view of the mounting block, the sliding frame and the claws of the present invention;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the sliding frame, the swinging member and the limit block of the present invention;

[0024] Figure 7 For the present invention Figure 5 The enlarged view of point A in the middle;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the folding plate, the elastic strip and the elastic member of the present invention;

[0026] Fig. 9 It is an exploded view of the sliding block, the mounting block and the sliding frame of the present invention.

[0027] In the accompanying drawings: 1-main body, 2-base, 201-chuck, 3-slide plate, 4-pressure plate, 5-sliding block, 6-mounting block, 7-sliding frame, 8-claw, 9-connecting piece, 10-folding plate, 101-allowance slope, 11-elastic strip, 12-elastic piece, 13-reset column, 14-detection column, 15-swinging piece, 151-transmission rod, 16-limiting block, 161-sliding groove, 17-extrusion block, 171-inclined surface, 18-limiting ball, 19-elastic friction plate, 20-sensor. DETAILED DESCRIPTION

[0028] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings.

[0029] A stable fully automatic pipe cutting machine, please refer to Figure 1-Figure 4 , including: a main body 1, on which a laser generator is installed, a holder 2 is installed on the main body 1, a chuck 201 is installed on the holder 2, and a sliding disk 3 is installed on the chuck 201; a plurality of sliding blocks 5 evenly distributed circumferentially are all limitedly slidably connected to the sliding disk 3, a plurality of power elements are arranged in the chuck 201 and are respectively used to provide power for adjacent sliding blocks 5, the sliding block 5 is fixedly connected to a mounting block 6, the mounting block 6 is limitedly slidably connected to a sliding frame 7, the sliding frame 7 is slidably connected to a clamping claw 8, and a plurality of clamping claws 8 are used to clamp and fix the pipe fittings; a plurality of groups of connecting members 9 evenly distributed circumferentially are respectively fixedly connected to adjacent sliding frames 7, and each group of connecting members 9 has at least two connecting members, and a folding plate 10 is hinged on one side of the connecting member 9 away from the adjacent sliding frame 7, and the folding plates 10 in the same group are jointly hinged with an elastic strip 11, and the elastic strip 11 contacts and cooperates with the adjacent clamping claws 8, and the elastic strip 11 is used to increase the force area when clamping the circular pipe fittings.

[0030] The main body 1 is equipped with a control terminal, a front clamp, and a loading and unloading system, which cooperate with a laser generator to cut the pipe fittings.

[0031] In the above scheme, the problem of stress concentration at the clamping point caused by the small contact area when the circular pipe is clamped and fixed is solved; the power element in the chuck 201 can be a cylinder, a hydraulic cylinder, etc., which can drive the sliding block 5 to move in a straight line and provide a constant extrusion force for the sliding block 5. For example, the pressure of the gas in the cylinder is controlled to be a constant value by the control terminal. After the claw 8, the folding plate 10 and the elastic strip 11 contact the pipe, the cylinder can still provide a constant force for the claw 8, the folding plate 10 and the elastic strip 11 through the sliding block 5, so that the claw 8, the folding plate 10 and the elastic strip 11 always have a tendency to approach the central axis of the pipe; the limited sliding connection between the mounting block 6 and the sliding frame 7 can be realized by a sliding groove and a protrusion, and initially, there is an empty stroke between the mounting block 6 and the sliding frame 7 for the relative movement of the two. When the sliding block 5 drives the adjacent mounting block 6 to move, the mounting block 6 first moves relative to the adjacent sliding frame 7 until the empty stroke between the sliding frame 7 and the adjacent mounting block 6 ends, and the mounting block 6 drives the adjacent sliding frame 7 to move together.

[0032] A plurality of groups of pressure plates 4 evenly distributed circumferentially can be installed on the sliding disk 3, and each group of pressure plates 4 includes two symmetrically distributed pressure plates 4, and the pressure plates 4 are used to guide adjacent sliding blocks 5 to slide along a straight line; the elastic strip 11 can be a material with high tensile strength and low ductility, such as carbon fiber reinforced composite materials; the elastic strip 11 can be embedded in the side of the adjacent clamping claw 8 close to the central axis of the sliding disk 3, so that initially, the elastic strip 11 and the side of the adjacent clamping claw 8 close to the central axis of the sliding disk 3 are coplanar, which is convenient for clamping square pipes; the circular pipes are wrapped by the elastic strip 11 to increase the force-bearing area of ​​the circular pipes, thereby dispersing the extrusion force applied to the circular pipes, avoiding the deformation of the circular pipes due to excessive local stress, thereby ensuring that the central axis of the circular pipes coincides with the central axis of the sliding disk 3, and ensuring the accuracy of laser cutting.

[0033] See also Figure 4 Furthermore, an elastic member 12 fixedly connected to the adjacent folding plate 10 is fixedly connected to the connecting member 9, and the elastic coefficient of the elastic member 12 is greater than the elastic coefficient of the elastic strip 11, and is used to maintain the straight state of the elastic strip 11. A reset column 13 is slidably connected to the claw 8, and a spring is fixedly connected between the two. The reset column 13 is squeezed and fitted with the adjacent mounting block 6.

[0034] See also Figure 5 Furthermore, a residual inclined surface 101 is provided on the claw 8 .

[0035] In the above scheme, the elastic strip 11 is intended to be kept taut at all times and wrinkles will not appear during the subsequent clamping process; the elastic member 12 can be any part such as a torsion spring, an elastic sheet, etc. that can flip the folding plate 10 in a direction away from the adjacent claws 8; after the circular tube is clamped and the elastic strip 11 contacts the circular tube, the folding plate 10 pushes the two ends of the adjacent elastic strip 11 to wrap the elastic strip 11 around the side wall of the circular tube. At the same time, the elastic strip 11 drives the adjacent folding plate 10 to swing relative to the adjacent connecting member 9, and drives the adjacent elastic member 12 to deform, so that the folding plate 10 finally contacts the circular tube, providing further rigid support for the circular tube, and improving the stability of the circular tube when clamping.

[0036] See also Figure 3 Furthermore, the thicknesses of adjacent mounting blocks 6 are different, and adjacent claws 8 are staggered.

[0037] See also Figure 5 and Figure 6 , further, it also includes: a plurality of identification components, which are respectively arranged in adjacent claws 8 for distinguishing square pipe fittings and round pipe fittings, and the identification components include: symmetrically distributed detection columns 14, which are slidably connected to the adjacent claws 8 at a position close to the central axis of the sliding disk 3, and the detection column 14 passes through the adjacent elastic strip 11; a swinging member 15, which is limitedly slidably connected to the adjacent claws 8, and a tension spring is fixedly connected therebetween, the detection column 14 is limitedly slidably connected to the adjacent swinging member 15, the swinging member 15 is rotatably connected to a transmission rod 151 slidably connected to the adjacent claws 8, a limited block 16 is slidably connected in the claws 8, a sliding groove 161 is provided on the limit block 16, the transmission rod 151 is limitedly slid in the adjacent sliding groove 161, and a limit groove that cooperates with the adjacent limit block 16 is provided on the sliding frame 7.

[0038] See also Figure 5 Furthermore, the distance that the limit block 16 can move is equal to the length of the detection column 14 protruding from the adjacent elastic strip 11, so that when the detection column 14 moves to the limit position, the detection column 14 is coplanar with the adjacent elastic strip 11.

[0039] See also Figure 5 Furthermore, the distance between the limit block 16 and the upper limit groove of the adjacent sliding frame 7 is greater than the depth of the upper limit groove of the sliding frame 7.

[0040] In the above scheme, it is intended to distinguish whether the clamped pipe is square or round, so as to select a suitable clamping force application method; the number of symmetrically distributed detection columns 14 on the same clamping claw 8 can be greater than or equal to two, and the number of corresponding detection columns 14 on the same clamping claw 8 is selected as two here. Multiple detection columns 14 are used to improve the accuracy of the detection result. Only when all the detection columns 14 on the same clamping claw 8 are squeezed into the adjacent clamping claws 8 can it be determined that the pipe to be clamped is a square pipe, and the rest are round pipes; the side of the detection column 14 close to the central axis of the sliding plate 3 can be set to a semi-cylindrical shape to reduce The friction between the detection column 14 and the pipe fitting prevents the detection column 14 from scratching the pipe fitting; the swinging piece 15 and the two adjacent detection columns 14 can realize a limited sliding relationship through a slide groove, etc. The slide groove on the swinging piece 15 is used to prevent the detection column 14 from conflicting with the movement of the adjacent swinging piece 15 when the adjacent detection columns 14 on one side are squeezed by the pipe fitting so that the swinging piece 15 swings (not displaced); the distance between the two detection columns 14 on the same claw 8 should be less than the width of the smallest pipe fitting to be clamped to ensure that the shape of the pipe fitting can be judged according to the situation of the detection column 14 being squeezed by the pipe fitting.

[0041] The radius of the arc formed by the midpoint of the lowermost side of the two detection columns 14 on the same clamping claw 8 and the midpoint of the lower side of the adjacent clamping claw 8 is greater than the outer diameter of the largest circular tube to be clamped, that is, when clamping the largest circular tube that the device can adapt to, the circular tube contacts the midline of the lower side of the clamping claw 8, but does not contact the two adjacent detection columns 14, which is used to ensure the reliability of the detection result of the detection column 14 (this paragraph is attached to the Figure 5 from the perspective of the ).

[0042] After the detection column 14 contacts the pipe fitting, if the single-side detection column 14 is squeezed and enters the adjacent claw 8, the detection column 14 pushes the adjacent swinging member 15 to move, so that the swinging member 15 is in an inclined state, and the swinging member 15 pushes the adjacent transmission rod 151 to move, and the transmission rod 151 pushes the adjacent limit block 16 to move through the adjacent sliding groove 161. At this time, the limit block 16 does not contact the adjacent limit groove on the sliding frame 7, that is, only when the two detection columns 14 on the same claw 8 are completely squeezed into the adjacent claws 8, the limit block 16 can cooperate with the adjacent limit groove on the adjacent sliding frame 7 to distinguish between round pipe fittings and square pipe fittings.

[0043] The specific operation steps of the above scheme are as follows: when clamping the square pipe fitting, the four sliding blocks 5 move simultaneously in the direction close to the centerline axis of the sliding disk 3, and the sliding block 5 drives the adjacent claws 8 to move through the adjacent mounting block 6, the adjacent sliding frame 7 and the adjacent limiting block 16. At the same time, the sliding frame 7 drives the adjacent elastic strips 11 to move along with the adjacent claws 8 through the adjacent connecting piece 9 and the adjacent folding plate 10 until the detection column 14 stops moving after contacting the square pipe fitting. As the sliding block 5 continues to move, the two detection columns 14 on the same claw 8 are squeezed into the adjacent claws 8. At this time, the detection column 14 drives the limiting block 16 to limit the adjacent limiting grooves on the adjacent sliding frame 7, so that the sliding frame 7 and the adjacent claws 8 are combined as a whole through the adjacent limiting block 16, so that the sliding frame 7 and the adjacent claws 8 are relatively stationary, that is, the elastic strips 11 and the adjacent claws 8 are relatively stationary, and finally the four claws 8 and the adjacent elastic strips 11 complete the clamping of the square pipe fitting together.

[0044] When clamping the round tube, due to the curved surface of the round tube, when the detection column 14 contacts the side of the round tube, at most only one detection column 14 on the same claw 8 contacts the round tube and is squeezed into the adjacent claw 8. At this time, the detection column 14 cannot drive the limit block 16 to enter the adjacent limit groove on the adjacent sliding frame 7. As the sliding block 5 continues to move, the claw 8 contacts the round tube, and the claw 8 stops moving. Then the sliding frame 7 continues to drive the elastic strip 11 to move, and the two folding plates 10 are used to squeeze the adjacent ones. The two ends of the adjacent elastic strips 11 are bent and fit against the side wall of the circular tube, and finally the folding plate 10 is fit against the side wall of the circular tube. At this time, the claw 8 clamps the circular tube through the elastic force of the spring on the adjacent reset column 13. At the same time, the eight folding plates 10 contact the circular tube and provide it with a linear extrusion force, and the four elastic strips 11 contact the circular tube and increase its force area. At this point, the clamping of the circular tube is completed, and then the control terminal controls the movement of the clamping seat 2 and starts the laser generator to cut the clamped tube.

[0045] See also Figure 5 and Figure 7 Furthermore, an extrusion block 17 is slidably connected in the sliding frame 7, and the extrusion block 17 is frictionally matched with the adjacent claw 8. An inclined surface 171 is provided on the mounting block 6 to be extruded and matched with the adjacent extrusion block 17. The inclined surface 171 is used to push the adjacent extrusion block 17 to move. A limiting ball 18 is slidably connected in the mounting block 6, and a spring is fixed between the two. A groove is provided on the sliding frame 7 to be limited and matched with the adjacent limiting ball 18.

[0046] In the above scheme, the purpose is to drive the claw 8 to continue to move through the extrusion block 17, thereby increasing the extrusion force of the claw 8 on the circular pipe fitting; the extrusion block 17 on a sliding frame 7 can be set to two, to improve the stability of the extrusion block 17 when the extrusion block 17 squeezes the claw 8, and the corresponding inclined surface 171 increases synchronously; the elastic coefficient of the adjacent spring of the limiting ball 18 is greater than the elastic coefficient of the adjacent spring of the reset column 13, which is used to enable the claw 8 and the adjacent sliding frame 7 to move relative to each other at the initial stage; the side of the extrusion block 17 close to the adjacent claw 8 can be set as a hard rubber block to ensure the friction between the extrusion block 17 and the adjacent claw 8; in the process of the sliding block 5 driving the mounting block 6 to move, the mounting block 6 drives the adjacent sliding frame 7 to move through the adjacent limiting ball 18, at this time, the mounting block 6 and the adjacent sliding frame 7 are in a relatively static state, and after the folding plate 10 contacts the circular pipe fitting, the folding The plate 10, the connecting piece 9 and the sliding frame 7 all stop moving. At this time, the mounting block 6 continues to move relative to the adjacent sliding frame 7 in the direction close to the central axis of the sliding disk 3 (that is, the idle stroke between the above-mentioned mounting block 6 and the adjacent sliding frame 7). The mounting block 6 drives the adjacent limiting ball 18 to move and releases the contact between the limiting ball 18 and the adjacent groove on the adjacent sliding frame 7. At the same time, the mounting block 6 squeezes the extrusion block 17 through the adjacent inclined surface 171 to move, so that the extrusion force between the extrusion block 17 and the adjacent claw 8 increases. Subsequently, when the mounting block 6 continues to move, the extrusion block 17 is compressed to the limit state. At this time, the extrusion block 17 and the adjacent claw 8 are combined as a whole by friction. The mounting block 6 squeezes the extrusion block 17 through the adjacent inclined surface 171 and the adjacent claw 8 to apply extrusion force to the circular pipe fittings together, thereby increasing the extrusion force of the claw 8 on the circular pipe fittings, thereby improving the stability of clamping the circular pipe fittings.

[0047] See also Figure 8 and Fig. 9 Furthermore, a plurality of elastic friction plates 19 are fixedly connected to one side of the elastic strip 11 close to the central axis of the sliding disc 3, and the elastic friction plates 19 extend out of the adjacent elastic strips 11 to increase the friction force of the elastic strips 11 when clamping the pipe fittings.

[0048] In the above scheme, the aim is to improve the stability when clamping the pipe; multiple elastic friction plates 19 can be located at non-central positions of adjacent elastic strips 11. When clamping the circular pipe, the claw 8 and the central portion of the adjacent elastic strip 11 are in rigid line contact with the circular pipe, that is, the presence of the elastic friction plate 19 will not reduce the rigid contact area between the elastic strip 11 and the circular pipe; the elastic friction plate 19 will be compressed to a state coplanar with the side of the adjacent elastic strip 11 after being squeezed, thereby increasing the friction between the elastic strip 11 and the pipe, thereby improving the stability when clamping the pipe.

[0049] See also Figure 4 and Fig. 9Furthermore, a sensor 20 is mounted on the mounting block 6 , and the sensor 20 contacts the adjacent reset column 13 .

[0050] In the above scheme, the diameter of the clamped circular pipe is determined by the change in the elastic force of the adjacent springs on the reset column 13, that is, the moving distance of the mounting block 6 relative to the claw 8; the sensor 20 can be a pressure-variable plate, a piezoelectric sensor, a Hall effect sensor, or other types of sensors that can detect the extrusion force between the reset column 13 and the adjacent mounting block 6 (that is, the compression amount of the spring between the reset column 13 and the adjacent claw 8); when clamping the circular pipe, after the claw 8 contacts the pipe and stops moving, the mounting block 6 drives the folding plate 10 to continue to move downward and finally contacts the pipe. During this process, the claw 8 and the mounting block 6 move relative to each other, and as the diameter of the pipe changes, the distance of the relative movement of the claw 8 and the mounting block 6 increases. The distance between the reset column 13 and the adjacent mounting block 6 changes, that is, the distance that the reset column 13 is pushed into the adjacent claw 8 by the adjacent mounting block 6 changes, and the elastic force of the adjacent spring of the reset column 13 changes synchronously. Finally, the diameter of the circular pipe to be clamped can be pushed out according to the elastic force of the adjacent spring of the reset column 13. As the diameter of the circular pipe decreases, the central angle occupied by the elastic strip 11 on the circular pipe increases, and the proportion of the area of ​​the extrusion pressure shared by the circular pipe increases, that is, the extrusion pressure that can be withstood increases. In this way, the diameter information of the circular pipe is transmitted to the control terminal, and the control terminal can control the sliding block 5 transmission claw 8 and the elastic strip 11 to apply a suitable extrusion pressure to the circular pipe, thereby further reducing the probability of the circular pipe being deformed due to excessive extrusion pressure.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A stable fully automatic pipe cutting machine, characterized in that: include: A main body (1), a laser generator being mounted on the main body (1), a chuck (2) being mounted on the main body (1), a chuck (201) being mounted on the chuck (201), and a sliding plate (3) being mounted on the chuck (201); A plurality of sliding blocks (5) uniformly distributed in the circumferential direction are all slidably connected to the sliding disc (3) in a limited position, a plurality of power elements are arranged in the chuck (201) and are respectively used to provide power to adjacent sliding blocks (5), the sliding block (5) is fixedly connected to a mounting block (6), the mounting block (6) is slidably connected to a sliding frame (7), the sliding frame (7) is slidably connected to a clamping claw (8), and the plurality of clamping claws (8) are used in cooperation to clamp and fix the pipe fitting; A plurality of groups of connecting members (9) evenly distributed in the circumferential direction are respectively fixed to adjacent sliding frames (7), each group of connecting members (9) has at least two connecting members (9), a side of the connecting member (9) away from the adjacent sliding frame (7) is hingedly connected to a folding plate (10), the folding plates (10) in the same group are hingedly connected to an elastic strip (11), the elastic strip (11) is in contact with and cooperates with the adjacent clamping claws (8), and the elastic strip (11) is used to increase the force bearing area when clamping the circular pipe; The connecting member (9) is fixedly connected to an elastic member (12) fixedly connected to the adjacent folding plate (10); the elastic coefficient of the elastic member (12) is greater than the elastic coefficient of the elastic strip (11) and is used to maintain the elastic strip (11) in a straight state; the claw (8) is slidably connected to a reset column (13), and a spring is fixedly connected therebetween; the reset column (13) is extruded and matched with the adjacent mounting block (6); Also includes: A plurality of identification components are respectively arranged in adjacent claws (8) for distinguishing square pipes from round pipes, and the identification components include: Symmetrically distributed detection columns (14) are slidably connected to adjacent claws (8) at positions close to the central axis of the sliding disk (3), and the detection columns (14) pass through adjacent elastic strips (11); The swing member (15) is slidably connected in a limited position in the adjacent clamping claw (8), and a tension spring is fixedly connected between the two. The detection column (14) is slidably connected to the adjacent swing member (15). The swing member (15) is rotatably connected to a transmission rod (151) slidably connected to the adjacent clamping claw (8). The clamping claw (8) is slidably connected to a limited position block (16), and a sliding groove (161) is provided on the limit block (16). The transmission rod (151) is slidably connected in the adjacent sliding groove (161), and the sliding frame (7) is provided with a limit groove that cooperates with the adjacent limit block (16) in a limited position.

2. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: The clamping claw (8) is provided with a residual inclined surface (101).

3. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: The thicknesses of adjacent mounting blocks (6) are different, and adjacent clamping claws (8) are staggered.

4. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: The distance that the limit block (16) can move is equal to the length of the detection column (14) protruding from the adjacent elastic strip (11), so that when the detection column (14) moves to the extreme position, the detection column (14) and the adjacent elastic strip (11) are coplanar.

5. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: The distance between the limit block (16) and the upper limit groove of the adjacent sliding frame (7) is greater than the depth of the upper limit groove of the sliding frame (7).

6. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: An extrusion block (17) is slidably connected inside the sliding frame (7), and the extrusion block (17) is frictionally matched with the adjacent clamping claw (8). The mounting block (6) is provided with an inclined surface (171) that is pressed and matched with the adjacent extrusion block (17), and the inclined surface (171) is used to push the adjacent extrusion block (17) to move. A limiting ball (18) is slidably connected inside the mounting block (6), and a spring is fixedly connected therebetween. The sliding frame (7) is provided with a groove that is limited and matched with the adjacent limiting ball (18).

7. A stable fully automatic pipe cutting machine according to claim 1, characterized in that: A plurality of elastic friction plates (19) are fixedly connected to one side of the elastic strip (11) close to the central axis of the sliding disc (3), and the elastic friction plates (19) protrude from adjacent elastic strips (11) to increase the friction force of the elastic strip (11) when clamping the pipe.

8. A stable fully automatic pipe cutting machine according to claim 6, characterized in that: A sensor (20) is mounted on the mounting block (6), and the sensor (20) is in contact with the adjacent reset column (13).

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