Anti-deformation and deburring cutting and blanking device and anti-deformation and deburring cutting and blanking method

Abstract

The present invention relates to a rectangular pipe cutting and blanking device and its usage method, mainly including: a support bench standing on the ground, a left workbench surface and a right workbench surface which are installed on the support bench and can slide relatively back and forth and left and right, and further including a cutting machine which can be lifted and lowered between the two workbench surfaces. It is characterized in that there are two workpiece clamping devices symmetrically fixed on the two workbench surfaces, a conveying device respectively detachably fixed on the workpiece clamping devices, and a cutting surface processing device which can be lifted and lowered corresponding to the lower part of the cutting machine. When used for cutting and blanking, the saw blade of the lowered cutting machine forms a certain angle, that is, the starting point of the saw blade cutting is changed to the intersection of the plane and the vertical surface of the rectangular pipe, so that the cutting force no longer directly acts on the plane of the rectangular pipe. When used for cutting surface processing, the left workbench surface and the right workbench surface are opened to both sides, and the cutting surface processing device rises to a height matching the rectangular pipe to process the cutting surface.

Description

Technical Field

[0001] The present invention belongs to the technical field of industrial processing, and particularly relates to a device and a method for preventing deformation, removing burrs, cutting and blanking of rectangular tubes made of metal materials. Background Art

[0002] The applicant's prior invention patent: the authorized announcement number CN103252529B discloses an automatic pipe cutting machine, which mainly solves the problems in the process of automatically cutting long pipe materials, and realizes the complete automation of the processes of material taking, material pushing, and cutting.

[0003] Among the pipe materials, our company uses more rectangular pipes made of steel and aluminum materials. The length of each rectangular pipe of these two raw materials when leaving the factory is 6 meters, and when applied in our company's products, it basically needs to be cut to less than 0.5 meters. Therefore, each rectangular pipe has a large amount of cutting work.

[0004] The Chinese invention patent with the authorized announcement number CN106624962B provides a full-automatic rectangular square pipe corner sawing machine. The purpose of this invention is to improve the cutting size and angle quality of products, improve efficiency, and reduce the labor intensity of personnel. This invention solves some problems in the cutting operation, and there are still some problems to be solved, specifically as follows:

[0005] During the cutting operation, for some rectangular pipes with a large ratio of height to width, such as a rectangular steel pipe with a width of 120 mm and a height of 40 mm, some defects are likely to occur during cutting. For the convenience of explanation, the relatively wide surface of the cross-section of the rectangular pipe is defined as the plane, and the relatively narrow surface is defined as the vertical surface. When cutting and blanking traditionally, the plane is usually placed upward for clamping. In this way, the contact area between the rectangular pipe and the clamping workbench is relatively large, the stability is better, the vibration generated during cutting can be reduced, and the safety is better. However, there is an obvious drawback when cutting a rectangular pipe with a wall thickness less than 3 mm with the wide surface upward, that is, the upward surface is prone to concave after cutting. This is because there is no support in the middle position of the plane of the rectangular pipe during cutting, which is caused by the downward feeding force of the saw blade. This will be more obvious after the saw blade becomes old and dull, as shown in the attached Figure 1 As shown, if vertical clamping is adopted and the two planes are cut in the vertical direction, the concave situation can be greatly improved. However, as described above, this will bring great instability and insecurity;

[0006] On the other hand, a large amount of coolant is used during the cutting of rectangular pipes. The coolant entangles sawdust and concentrates on the cutting surface, and part of it flows into the rectangular pipe. After drying, the sawdust adheres to the inner wall of the cutting surface.

[0007] After the cutting and blanking of rectangular pipes, the next process is usually the welding process or the installation of capping and covering, etc. To ensure the processing quality of the subsequent processes, it is necessary to clean the sawdust, remove the burrs, and correct the concave surface of the above problems. These processes basically require manual labor, which is extremely time-consuming and laborious. Summary of the Invention

[0008] In view of the above problems, the present invention provides a rectangular pipe cutting and blanking device, which can effectively solve the problems in the background technology, not only reducing the deformation after cutting but also removing the burrs and cleaning the internal sawdust immediately after cutting.

[0009] The object of the present invention is achieved by the following technical solutions: An anti-deformation and deburring cutting and blanking device mainly includes: a support platform frame standing on the ground, a left workbench surface and a right workbench surface installed on the support platform frame and capable of sliding relatively back and forth and left and right, and further includes a cutting machine that can be lifted between the two workbench surfaces. It is characterized in that two workpiece clamping devices symmetrically fixed on the two workbench surfaces, a conveying device respectively detachably fixed on the workpiece clamping devices, and a cutting surface processing device that can be lifted corresponding to the lower part of the cutting machine;

[0010] When used for cutting and blanking, the cutting surface processing device descends below the workbench surface, and the left workbench surface and the right workbench surface move closer to the middle to form a closure. After the closure, there is a gap with the thickness of the saw blade. The conveying device performs transmission, transports the rectangular pipe to the set position, and then the workpiece clamping device performs clamping. At the same time of clamping, the workpiece clamping device rotates itself by a certain angle, forming a certain angle with the saw blade of the descending cutting machine, that is, the starting point of saw blade cutting is changed to the intersection of the rectangular pipe plane and the vertical plane, so that the cutting force no longer directly acts on the rectangular pipe plane;

[0011] When used for cutting surface processing, the left workbench surface and the right workbench surface open to both sides, and the cutting surface processing device rises to the height matching the rectangular pipe to process the cutting surface.

[0012] Preferably, the workpiece clamping device includes: a lower fixed seat fixed on the workbench surface, an upper die matching the lower fixed seat and rotatably connected to each other, and a pushing and rotating clamping assembly for pushing the upper die to rotate and clamping the rectangular pipe at the same time. The traditional clamping method is usually fixed and cannot adjust the cutting angle with the saw blade. By designing the clamping device into two rotatable parts and designing the pushing and rotating clamping assembly to clamp the rectangular pipe while pushing the two to rotate, the angular position between the rectangular pipe and the blade can be adjusted when pushing and clamping, and it does not affect the transmission of the rectangular pipe when returning to the parallel state.

[0013] Preferably, a groove with an arc-shaped cross-section is provided at the center of the lower fixing base, and an arc-shaped cylindrical surface matching the groove is provided at the center of the upper profiling die. The two are pivotally connected by setting hanging ears at the outer ends. The lower fixing base is provided with an inclined surface facing the outside, and the pushing and rotating clamping assembly is arranged on the side opposite to the inclined surface; the overall cross-section of the upper profiling die is a semi-circular shape with a missing corner, and the shape of the missing corner is a right angle. The two surfaces of the right angle are a working vertical surface and a working plane. The upper profiling die and the lower fixing base are in contact through an arc surface, and the two can rotate relative to each other. The design of the hanging ears fixes the two on both sides and prevents them from separating. When disassembling, it is only necessary to remove the hanging ears to separate them, which is very convenient.

[0014] Preferably, the pushing and rotating clamping assembly includes: more than two driving cylinders with their closed ends hinged below the workbench surface, one end hinged to the telescopic rod of the driving cylinder, connected to the upper profiling die through a first connecting piece in the middle, and the other end being a free end for pressing the rectangular tube; an arc-shaped driven pressing piece that can slide relatively and fits on the outer surface of the upper profiling die; both end faces of the arc-shaped driven pressing piece have extension segments extending towards the center of the arc. An arc-shaped groove is provided in the extension segment, and a notch with the same radian as the extension segment is provided in the upper profiling die. A pin is arranged in the notch and passes through the arc-shaped groove in the extension segment. Here, the pin is detachably fixedly connected, and multiple installation positions of the pin are set in the notch to be used for adjustment when providing rectangular tubes of different height specifications, so as to form a fit where the two fit tightly and slide without separating. A second connecting piece is provided at the upper end of the arc-shaped driven pressing piece, and the second connecting piece is used to connect the main body part of the conveying device. A reverse push spring is provided at the lower end of the arc-shaped driven pressing piece, and each pressing execution piece is combined together by setting a linkage piece. The overall movement of the pushing and rotating clamping assembly is realized by the driving cylinder. Since more clamping area is required for the rectangular tube rather than too large clamping force, generally one driving cylinder is arranged at each end, and it is more economical and reasonable to combine all the pressing execution pieces to act together through the linkage piece.

[0015] Preferably, a return spring is hung on the side opposite to the inclined surface of the lower fixing base, and the other end of the return spring is hung on the first connecting piece. The return spring drives the upper profiling die to reset after the driving cylinder retracts. The return spring plays a guarantee role, that is, after the driving cylinder retracts, it ensures that the upper profiling die is in a parallel position.

[0016] Preferably, the conveying device is generally divided into a main part and an auxiliary part. The main part is a belt transmission component, and the transmission actuator is preferably a chain plate structure made of hard rubber. The auxiliary part is installed in a working plane, and a plurality of long strip sinks are provided in the working plane. Both sides of the sink are provided with partition walls in the long direction, and a plurality of groups of mounting holes are arranged between the two partition walls. The auxiliary part of the conveying device includes: a slidable roller assembly sleeved in each group of mounting holes. The hard rubber material can increase the friction performance and will not cause damage to the rectangular tube after the rectangular tube is compressed. The design of the slidable roller assembly at the bottom enables the rectangular tube to move smoothly and accurately when it needs to be transported.

[0017] Preferably, the sliding roller assembly includes a roller, a core shaft rotatably connected to the roller and exposed on both sides and with a tapered end, and a reset spring sleeved on one side of the core shaft; the distal end of the core shaft on which the reset spring is installed is a pressing end, and the tapers of the exposed tapered parts on both sides of the core shaft are set in the same direction, and the diameters of the side away from the reset spring are relatively large and the diameters of the other side are relatively small. After the sliding roller assembly is installed, the tapered parts at both ends of the core shaft are respectively sleeved into the mounting holes on one side, and the roller falls into the sink groove and can be displaced to a certain position along the axial direction of the mounting hole. A sink hole for accommodating the reset spring is provided at the position corresponding to each mounting hole on the side of the upper mold away from the working facade, and the pressing end and part of the reset spring are exposed. The core shaft and the roller can be moved inward synchronously by applying force to the pressing end from the outside. This design uses the tapered parts at both ends of the mandrel to contact the mounting hole with a diameter tending to the small end, and the center axis of the roller decreases relative to the center axis of the mounting hole, that is, the overall height of the roller is reduced, and the roller is set to a maximum height slightly lower than the upper surface of the sink groove, so that when the workpiece clamping device is in the state of waiting for cutting, the roller does not contact the bottom surface of the rectangular tube, and does not affect its clamping; and when the external force is removed, under the elastic force of the reset compression spring, the tapered parts at both ends of the mandrel contact the mounting hole with a diameter tending to the large end, and similarly the overall height of the roller is increased, and the increase is set to be higher than the upper surface of the sink groove, so that when the workpiece clamping device is in the state of waiting for transmission, it can assist the belt transmission component to smoothly move and transmit the rectangular tube. Here, the force on the pressing end is applied, and the linkage is used to resist it, so that when the clamping actuator performs the clamping action, the roller is synchronously triggered to sink, and vice versa, when the clamping actuator performs the retraction action, the roller moves up to achieve auxiliary transmission.

[0018] Preferably, the cutting surface processing device includes: a lifting platform frame disposed between the left workbench surface and the right workbench surface, a rotating platform rotatably mounted on the upper part of the lifting platform frame, a processing module detachably fixed at the center of the rotating platform for deburring and sawdust cleaning, and a clamping assembly fixed on the rotating platform on one side of the processing module; the processing module includes: a connecting base for detachably connecting with the rotating platform, a mounting seat fixedly installed on the upper part of the connecting base, a grinding assembly and a sawdust cleaning assembly arranged in the mounting seat, and a stable backrest arranged on one side of the mounting seat.

[0019] The present invention also provides a method for cutting and blanking rectangular tubes in view of the problems in the prior art. This method can reduce the cutting deformation of rectangular tubes, reduce the station transfer of rectangular tubes, improve the utilization rate of the transportation device, and improve the overall processing efficiency of rectangular tubes.

[0020] Another object of the present invention is achieved by the following technical solution: a method for anti-deformation deburring cutting and blanking, as Figure 16 shown, the steps are:

[0021] S1. The workpiece clamping device first presets a height matching the rectangular tube, and the rectangular tube enters the workpiece clamping device through an external transmission device;

[0022] S2. The rectangular tube continuously travels through the conveying device. After reaching the set position, the driving cylinder acts, driving the pressing actuator to act. The upper end of the pressing actuator abuts against the side wall of the rectangular tube. When the driving cylinder continues to move upward, it pushes the upper die to rotate against the elastic force of the return spring. At the same time, the upper wall of the rectangular tube presses against the slidable roller assembly, causing it to rotate against the elastic force of the anti-pushing spring together with the arc-shaped driven pressing member until the upper die is completely attached to the lower fixing seat. Also, the linkage member abuts against the pressing end, causing the mandrel and the roller to move inward synchronously, and the height of the roller drops to the working plane. The working plane and the belt transmission assembly press the upper and lower surfaces of the side rectangular tube, and all four surfaces of the rectangular tube are simultaneously clamped and fastened;

[0023] S3. After the rectangular tube forms an inclination angle with the saw blade and the cutting is completed by starting the cutting machine, the driving cylinder retracts. After the linkage member is removed, the roller rises above the working plane, and the slidable roller assembly and the belt transmission assembly return to the transmission state, and the upper die resets;

[0024] S4. Slide the left workbench surface and the right workbench surface to both sides respectively, then start the cutting surface processing device to rise. After reaching the set distance, start the conveying device on the workbench surface corresponding to the processing direction of the cutting surface processing device, and convey the rectangular tube into the cutting surface processing device. The clamping assembly clamps both sides of the rectangular tube;

[0025] S5. First, start the path drive motor to rotate the surrounding rotating arm for one circle, and the inner and outer grinding heads rotate along the cross-sectional contour of the rectangular pipe to check whether the position is accurate. At the same time, driven by the transmission gear, the flexible cleaning part deforms under the transmitted tension of the tension execution gear, that is, it forms a filling in the inner cavity of the rectangular pipe to prevent grinding spatter from entering;

[0026] S6. Then, start the grinding drive motor to drive the two groups of grinding heads to rotate, and follow the path of the surrounding rotating arm to complete the removal of burrs. After the grinding drive motor stops, the disc spring energy storage part continues to store energy;

[0027] S7. The clamping assembly is loosened, the conveying device starts to retreat, and the rectangular pipe completely exits. At this time, sawdust and grinding chips are also carried out together to complete the cleaning. Shut down the continuous path drive motor. At this time, the disc spring energy storage part releases the stored energy, causing the tension execution gear to reverse. With the auxiliary action of the reset assist spring at the same time, the inner pull shaft, the pressing part, and the flexible cleaning part are reset at the same time;

[0028] S8. Start the rotating platform, rotate the degree to the other side, and repeat the above steps to complete the processing of the cutting surface.

[0029] In summary, the present invention has the following advantages compared with the prior art:

[0030] 1. The workpiece clamping device of the present invention can rotate together with the rectangular pipe to be cut, thereby changing the cutting angle with the saw blade, that is, the starting point of saw blade cutting is changed to the intersection of the plane and the vertical surface of the rectangular pipe. In this way, the cutting force no longer acts directly on the plane of the rectangular pipe, effectively reducing the concave deformation of the cutting surface;

[0031] 2. The conveying device of the present invention can not only transport the rectangular pipe, but also assist in clamping the rectangular pipe during cutting, so that the rectangular pipe is almost in a wrapped clamping state during cutting, improving the seismic stability;

[0032] 3. After the rectangular pipe is cut and blanked, the traditional processing method is to transfer the work station for deburring and cleaning sawdust, and most of them need to be done manually. However, the cutting surface processing device of the present invention mechanically removes burrs and cleans sawdust and grinding chips immediately after cutting, avoiding the increase in cleaning difficulty caused by the adhesion of sawdust inside the rectangular pipe, saving the transfer cost, improving the utilization rate of the conveying device, accelerating the overall production rhythm, and having no more occupation in terms of space layout compared with the cutting machine. The overall volume of the entire equipment is not much different from that of the conventional disc cutting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the defects in the prior art processing in the background technology;

[0034] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 3 It is the right view partial view when the present invention is in the to-be-transmitted state;

[0036] Figure 4 It is the right view partial view when the present invention is in the to-be-cut state;

[0037] Figure 5 It is the exploded view of the parts of the workpiece clamping device;

[0038] Figure 6 It is Figure 2 The partial enlarged view at position A in

[0039] Figure 7 It is the structural schematic diagram of the workpiece clamping device from the top view and the oblique side angle;

[0040] Figure 8 It is Figure 7 The partial enlarged view at position B in

[0041] Figure 9 It is the structural schematic diagram of the slidable roller assembly;

[0042] Figure 10 It is the structural schematic diagram when the cutting surface processing device is working;

[0043] Figure 11 It is the structural schematic diagram of the processing module;

[0044] Figure 12 It is the structural schematic diagram of the processing module after partial sectioning with the clamping component hidden;

[0045] Figure 13 It is Figure 12 The partial enlarged view at position C in

[0046] Figure 14 It is the full sectional view of the processing module;

[0047] Figure 15 It is the schematic diagram when the processing module is operating;

[0048] Figure 16 It is the step flow chart of the anti-deformation deburring cutting and blanking method.

[0049] Markings in the figure:

[0050] Rectangular pipe 001, first connecting piece 002, sinking groove 003, partition wall 004, mounting hole 005, linkage piece 006, hanging ear 01, support bench 100, left workbench surface 200, right workbench surface 300, cutting machine 400, workpiece clamping device 500, lower fixing seat 510, upper template 520, working vertical surface 521, working plane 522, reset tension spring 523, push-rotate clamping assembly 530, driving cylinder 531, pressing actuator 532, arc-shaped driven pressing piece 533, second connecting piece 534, anti-pushing spring 535, conveying device 600, slidable roller assembly 610, belt transmission assembly 620, roller 611, core shaft 612, reset compression spring 613, pressing end 614, cutting surface processing device 700, lifting bench 710, rotating platform 720, processing module 730, connecting base 731, mounting seat 732, grinding assembly 733, path driving motor 733a, intermediate gear 733b, surrounding rotating arm 733c, slider 733d, grinding driving motor 733e, transmission shaft 733f, power transmission gear set 733h, outer wall grinding wheel clamping head 733j, inner wall grinding wheel clamping head 733k, main contour guide 733i, sub contour guide 733m, overall mounting frame 733n, sawdust cleaning assembly 734, flexible cleaning piece 734a, inner pulling shaft 734b, pressing piece 734c, boss 734d, reset assisting spring 734e, fixed threaded piece 734f, transmission gear 734g, wide surface gear 734h, transmission reset shaft 734i, tension execution gear 734m, disc spring energy storage piece 734n, stable backrest 735, clamping assembly 740. Specific embodiments

[0051] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0052] Embodiment 1

[0053] As Figure 2 shown, a rectangular pipe cutting and blanking device can reduce the concave deformation of the cutting surface by changing the cutting angle, and can mechanically remove the inner and outer surface burrs of the cutting part and automatically clean the sawdust inside the cutting part; the main structure includes: a support bench 100 standing on the ground, a left workbench surface 200 and a right workbench surface 300 which are installed on the support bench 100 and can slide back and forth and left and right, a cutting machine 400 which is arranged between the two workbench surfaces and can be lifted in a certain space above, a workpiece clamping device 500 symmetrically fixed on each of the two workbench surfaces with the saw blade of the cutting machine 400 as the center, a conveying device 600 detachably fixed on the workpiece clamping device 500 respectively, and a cutting surface processing device 700 which can be lifted in a certain space below the cutting machine 400.

[0054] When used for cutting surface machining, the cutting surface machining device 700 descends below the tabletop, while the left tabletop 200 and the right tabletop 300 move closer to the middle to form a closure. After the closure, there is a gap with the thickness of the saw blade. The conveying device 600 performs transmission. After the rectangular pipe is transmitted to the set length, the workpiece clamping device 500 performs clamping. While clamping, the workpiece clamping device 500 rotates itself by a certain angle, forming a certain angle with the saw blade of the descending cutting machine 400. That is, the starting point of the saw blade cutting is changed to the intersection of the plane and the vertical surface of the rectangular pipe. In this way, the cutting force no longer directly acts on the plane of the rectangular pipe, effectively reducing the concave of the cutting plane.

[0055] When used for cutting surface machining, the left tabletop 200 and the right tabletop 300 open to both sides, and the cutting surface machining device 700 rises to a height matching the rectangular pipe, and corresponding processes such as deburring or chamfering are selected for the cutting surface according to requirements.

[0056] As Figures 3 - 4 shown, the workpiece clamping device 500 has two stationary working states, namely the state of waiting for transmission and the state of waiting for cutting. The two working states are switched by rotating relative to each other. Figure 3 It is the state where the workpiece clamping device 500 does not fully clamp the rectangular pipe 001. At this time, it is in the state of cooperating with the conveying device 600 to transmit the rectangular pipe 001. Figure 4 It is the state where the workpiece clamping device 500 clamps the rectangular pipe 001 and is waiting for cutting after its own rotation is completed. Its main structural components are as Figure 5 shown, including: a long strip-shaped lower fixing seat 510 fixed on the tabletop, an upper mold 520 that matches the lower fixing seat 510 and can be relatively rotatably connected to abut against the rectangular pipe, and a pushing and rotating clamping assembly 530 for pushing the upper mold 520 to rotate and clamping the rectangular pipe at the same time.

[0057] Figure 5 shown, an arc-shaped groove is provided at the center of the lower fixing seat 510, and an arc-shaped cylindrical surface matching the groove is provided at the center of the upper mold 520. The two are pivotally connected by setting lugs 01 at the outer ends. The lower fixing seat 510 is provided with an inclined surface facing the outside, and the space left above the inclined surface is used for the rotation space of the upper mold 520. The pushing and rotating clamping assembly 530 is arranged on the side opposite to the inclined surface. The overall cross-section of the upper mold 520 is a semi-circular shape with a missing corner. The shape of the missing corner is a right angle. The two surfaces of the right angle are a working vertical surface 521 and a working plane 522. The two working surfaces together form a backstop for the rectangular pipe, for the rectangular pipe to lean against and slide or abut against when being clamped.

[0058] As Figures 3 - 5As shown in the figure, the pushing and clamping assembly 530 includes: more than two driving cylinders 531 with their closed ends hinged under the workbench surface, one end of which is hinged to the telescopic rod of the driving cylinder 531, and the middle is hinged to the upper die 520 through the first connecting piece 002, and the other end is a free end for pressing the rectangular tube, namely the pressing actuator 532; an arc-shaped driven pressing piece 533 that can slide relatively and fit on the outer surface of the upper die 520;

[0059] As Figure 6 shown in the figure, both end faces of the arc-shaped driven pressing piece 533 have extension segments extending towards the arc center side, and arc-shaped grooves are provided in the extension segments. The upper die 520 is provided with the same radian notches that cooperate with the extension segments. Pins are arranged in the notches and pass through the arc-shaped grooves in the extension segments to form a fitting where the two are closely attached and slide without separation. A second connecting piece 534 is provided at the upper end of the arc-shaped driven pressing piece 533, and the second connecting piece 534 is used to connect the main part of the conveying device 600. A reverse pushing spring 535 is provided at the lower end of the arc-shaped driven pressing piece 533. The reverse pushing spring 535 has two functions. One is that when the workpiece clamping device 500 is in the state of waiting for transmission, the reverse pushing spring 535 makes the main part of the conveying device 600 on the arc-shaped driven pressing piece 533 keep contact with the rectangular tube with an appropriate frictional pressure. The other is that when the workpiece clamping device 500 turns from the state of waiting for transmission to the state of waiting for cutting, the rectangular tube flips and moves upward, and the reverse pushing spring 535 is greatly compressed and reversely pushes the driven pressing piece 533 to form complete pressing between the main part of the conveying device 600 and the rectangular tube; As Figure 5 、 Figure 7 shown in the figure, each pressing actuator 532 is combined together by arranging linkage parts 006 to be able to complete driving with relatively few cylinders and ensure the synchronization of actions.

[0060] A reset tension spring 523 is hung on the side opposite to the inclined plane in the lower fixed seat 510, and the other end of the reset tension spring 523 is hung on the first connecting piece 002. The reset tension spring 523 drives the upper die 520 to reset after the driving cylinder 531 retracts.

[0061] The conveying device 600 is generally divided into two parts: the main part and the auxiliary part. The main part is the belt-type conveying assembly 620, and the conveying actuator is a chain plate structure made of hard rubber. The auxiliary part is installed in the working plane 522. As Figures 7 - 8 shown in the figure, a plurality of long strip-shaped sinking grooves 003 are provided in the working plane 522, and partition walls 004 are provided on both long sides in the sinking grooves 003. Multiple groups of mounting holes 005 are arranged at intervals between the two partition walls 004; The auxiliary part of the conveying device 600 includes: a slidable roller assembly 610 sleeved in each group of mounting holes 005;

[0062] As Figure 9As shown, the slidable roller assembly 610 includes a roller 611, a core shaft 612 rotatably connected to the roller 611 and exposed on both sides and with a tapered end, and a return spring 613 sleeved on one side of the core shaft 612; the distal end of one side of the core shaft 612 on which the return spring is installed is a pressing end 614, and the tapers of the tapered parts exposed on both sides of the core shaft 612 are set in the same direction, and the diameter of the side away from the return spring 613 is relatively large, and the diameter of the other side is relatively small. The slidable roller assembly 61 After installation, the conical parts at both ends of the mandrel 612 are respectively inserted into the mounting holes 005 on one side, and the roller 611 falls into the sink groove 003 and can be displaced to a certain position along the axial direction of the mounting hole 005. The upper mold 520 is provided with a sink hole for accommodating the return compression spring 613 at the position corresponding to each mounting hole 005 away from the working vertical surface 521. The pressing end 614 and part of the return compression spring 613 are exposed. By applying force to the pressing end 614 from the outside, the mandrel 612 and the return compression spring 613 can be moved. The roller 611 moves inward synchronously, and at this time, the contact between the tapered parts at both ends of the core shaft 612 and the mounting hole 005 is toward the small end in diameter, and the center axis of the roller 611 decreases in height relative to the center axis of the mounting hole 005, that is, the overall height of the roller 611 is reduced, and the roller 611 is set to a maximum height slightly lower than the upper surface of the sink groove 003, so that when the workpiece clamping device 500 is in the state of waiting for cutting, the roller 611 does not contact the bottom surface of the rectangular tube, and does not affect its clamping; and when the external force is removed, under the elastic force of the reset compression spring 613, the contact between the tapered parts at both ends of the core shaft 612 and the mounting hole 005 is toward the large end in diameter, and similarly, the overall height of the roller 611 is increased, and the increase is set to be higher than the upper surface of the sink groove 003, so that when the workpiece clamping device 500 is in the state of waiting for transmission, it can assist the belt transmission component 620 to smoothly move and transmit the rectangular tube. Here, force is applied to the pressing end 614 to resist the linkage 006, so that when the clamping actuator 532 performs the clamping action, the roller 611 is synchronously triggered to sink. Conversely, when the clamping actuator 532 performs the retraction action, the roller 611 moves up to achieve auxiliary transmission.

[0063] like Figure 10 As shown, in order to clean the cutting surface as soon as possible and reduce the transportation and secondary clamping, after the rectangular tube is cut once, the left work surface 200 and the right work surface 300 slide to both sides respectively, and then the cutting surface processing device 700 is raised to match the height of the rectangular tube, and the conveying device 600 on one side is started to transport the rectangular tube to the cutting surface processing device 700 to a suitable position, and then the cutting surface processing device 700 performs the corresponding operation;

[0064] The cutting surface processing device 700 includes: a lifting platform frame 710 disposed between the left workbench surface 200 and the right workbench surface 300, a rotating platform 720 rotatably mounted on the upper part of the lifting platform frame 710, a processing module 730 detachably fixed at the center of the rotating platform 720 for deburring and sawdust cleaning, and a clamping assembly 740 fixed on the rotating platform 720 on one side of the processing module 730; during operation, the clamping assembly 740 fixes the incoming rectangular pipe, the processing module 730 removes burrs and cleans sawdust on the cutting surface. After one side of the processing surface is completed, the rotating platform 720 is started to rotate 180 degrees, so that the processing direction of the processing module 730 is opposite to the other side of the rectangular pipe. Similarly, the corresponding conveying device 600 of this rectangular pipe is started to convey the rectangular pipe to the processing module 730 for deburring and sawdust cleaning, so as to complete the deburring and sawdust cleaning operation after one cutting of the rectangular pipe.

[0065] As Figure 11 shown, the processing module 730 includes: a connection base 731 for detachably connecting with the rotating platform 720, a mounting seat 732 fixedly installed on the upper part of the connection base 731, a grinding assembly 733 and a sawdust cleaning assembly 734 arranged in the mounting seat 732, and a stabilizing backrest 735 arranged on one side of the mounting seat 732 for enhancing stability during operation;

[0066] As Figures 12 - 13 shown, the grinding assembly 733 includes: a path driving motor 733a installed in the mounting seat 732 for driving to rotate around the cross-section of the rectangular pipe, an intermediate gear 733b meshing with the output shaft gear of the path driving motor 733a, a surrounding rotating arm 733c arranged at the front end of the intermediate gear 733b and fixedly connected with it, a sliding block 733d slidably installed in the surrounding rotating arm 733c, a grinding driving motor 733e arranged on one side of the sliding block 733d close to the intermediate gear 733b, and a transmission shaft 733f arranged on the other side far from the intermediate gear 733b and connected to the output shaft of the grinding driving motor 733e through the sliding block 733d. A power transmission gear set 733h meshingly connected through a positioning mounting frame 733g is arranged in the transmission shaft 733f. Outer wall grinding wheel holders 733j and inner wall grinding wheel holders 733k are respectively arranged at the centers of the two gears in front of the power transmission gear set 733h. Guide rollers are respectively arranged at the centers of the two gears behind the power transmission gear set 733h. A main contour guide 733i matching the inner and outer contours of the cross-section of the rectangular pipe to be processed and a secondary contour guide 733m at the front end of the main contour guide 733i are arranged between the two guide rollers, and an integral mounting frame 733n covering the periphery of the two guides;

[0067] The main contour guide 733i is in the shape of a rectangular block as a whole. The outer peripheral surface matches the outer contour of the rectangular pipe, and the inner side is grooved. The size after grooving matches the inner contour of the rectangular pipe. Similar to the profiling die principle, that is, under the rotation of the surrounding rotating arm 733c, the two guide rollers respectively roll and cooperate with the outer periphery and the inner side groove of the main contour guide 733i. After the grinding wheel holder at the front end is installed with the corresponding grinding wheel, it grinds the cutting surface of the rectangular pipe in a circular motion to remove burrs.

[0068] As Figures 12 - 14 shown, the sawdust cleaning assembly 734 includes: a flexible cleaning member 734a provided at the front end and extending into the rectangular pipe during operation; in order to facilitate entry and prevent the sawdust concentrated at the mouth from being pushed deep into the pipe by the four sides of the flexible cleaning member 734a when entering, the overall external dimension of the flexible cleaning member 734a is smaller than the inner space of the rectangular pipe, that is, there is a space left around it and the pipe wall.

[0069] The sawdust cleaning assembly 734 also includes: an inner pull shaft 734b that tightly and slidably passes through the flexible cleaning member 734a, the secondary contour guide 733m, the main contour guide 733i, and the center of the surrounding rotating arm 733c and is sleeved into the stable backrest 735; a pressing member 734c is provided at one end of the inner pull shaft 734b through a threaded connection with the flexible cleaning member 734a. An extended boss 734d is provided at one end of the inner pull shaft 734b close to the stable backrest 735. A reset assist spring 734e is provided between the boss 734d and the stable backrest 735. During use, the boss 734d is stressed and overcomes the elastic force of the reset assist spring 734e to move the inner pull shaft 734b towards the stable backrest 735 side. The pressing member 734c at the front end squeezes the flexible cleaning member 734a, causing the flexible cleaning member 734a to deform and expand towards the surrounding. The amplitude of the deformation needs to fill the entire inner space of the rectangular pipe. Therefore, the flexible cleaning member 734a can specifically be an airbag with elasticity on the circumferential surface and the side surface, and the wall of the airbag on the circumferential surface is relatively thin. When subjected to pressure, it first deforms to fill the inner space of the rectangular pipe, and then as the pulling stroke continues, the airbag expands towards both sides. Such a design that can expand towards both sides serves as a buffer release for the pulling force. The purpose of this action of the flexible cleaning member 734a is to block the abrasive dust from entering the deep part of the rectangular pipe when removing burrs, and after the rectangular pipe is withdrawn, the flexible cleaning member 734a takes out the abrasive dust and the original sawdust together to achieve the purpose of cleaning the inner space.

[0070] The sawdust cleaning component 734 is also provided with a component that applies a pulling force to the inner pulling shaft 734b. This component relies on the power of the path driving motor 733a and can be reset after the power stops. The conversion structure adopts thread transmission, and the pitch controls the stroke reset accuracy. The specific structure includes: a fixed threaded member 734f sleeved on the outer periphery of the inner pulling shaft 734b and fixed on the mounting seat 732, a transmission gear 734g arranged above the transition gear 733b and the two are meshed, a wide-faced gear 734h coaxially arranged with the transmission gear 734g, a transmission reset shaft 734i that coaxially connects the transmission gear 734g and the wide-faced gear 734h and is rotatably sleeved in the stable backrest 735, the outer ring teeth are meshed with the wide-faced gear 734h, the inner ring is provided with a threaded pulling force execution gear 734m that is threadedly meshed with the fixed threaded member 734f, and a transmission reset shaft 734i connected to the transmission reset shaft 734i The disc spring force storage member 734n is connected and fixed on the stable backrest 735; when working, the transmission gear 734g is relayed from the transition gear 733b to the tension execution gear 734m through the wide-face gear 734h, and the disc spring force storage member 734n accumulates force during continuous transmission. The threaded cooperation between the tension execution gear 734m and the fixed threaded member 734f makes the tension execution gear 734m move to the right, and it contacts the boss 734d during the movement, so that the inner pulling shaft 734b moves to the right as a whole, thereby driving the clamping member 734c to compress the flexible cleaning member 734a to deform it. After the grinding is completed, the rectangular tube is withdrawn, the path driving motor 733a stops, the disc spring force storage member 734n releases the stored energy, and the tension execution gear 734m is rotated in the opposite direction. With the help of the reset assisting spring 734e, the inner pulling shaft 734b, the clamping member 734c, and the flexible cleaning member 734a are reset at the same time.

[0071] Overall operation steps simulation:

[0072] S1, Figure 2 As shown, the rectangular tube 001 enters the workpiece clamping device 500 through the external transmission device. Here, the workpiece clamping device 500 is first preset to a height that matches the rectangular tube 001. Figure 6 This is accomplished by limiting the pin position shown in ;

[0073] S2, Figure 3As shown, the rectangular tube 001 continuously moves forward through the conveying device 600. After reaching the set position, the driving cylinder 531 acts, driving the pressing actuator 532 to act and contact the side wall of the rectangular tube 001. When the driving cylinder 531 continues to move upward, it pushes the upper die 520 to rotate against the elastic force of the return spring 523. At the same time, the upper wall of the rectangular tube 001 presses against the belt transmission assembly 620, causing it to rotate together with the arc-shaped driven pressing member 533 against the elastic force of the anti-pushing spring 535 until the upper die 520 is completely attached to the lower fixing seat 510. At this time, the rectangular tube 001 is clamped on both the side and the top. Generally, the existing clamping devices are only designed to clamp on both sides, and the stability is more guaranteed;

[0074] S3、 Figure 4 As shown, an inclination angle has been formed between the rectangular tube 001 and the saw blade. After starting the cutting machine 400 to complete the cutting, the driving cylinder 531 retracts and the upper die 520 resets;

[0075] S4、 Figure 2 As shown, the left workbench surface 200 and the right workbench surface 300 are respectively slid to both sides, and then the cutting surface processing device 700 is started to rise. After reaching the set distance, the conveying device 600 on the workbench surface corresponding to the processing direction of the cutting surface processing device 700 is started, and the rectangular tube 001 is conveyed into the cutting surface processing device 700. As Figure 15 As shown, the clamping assembly 740 clamps both sides of the rectangular tube 001;

[0076] S5、 Figure 15 As shown, first start the path driving motor 733a to make the surrounding rotating arm 733c rotate one circle. The internal and external grinding heads rotate along the cross-sectional contour of the rectangular tube 001 for one week to check whether the position is accurate. At the same time, driven by the transmission gear 734g, the flexible cleaning member 734a deforms under the transmitted tension of the tension execution gear 734m, that is, it forms a filling in the inner cavity of the rectangular tube 001 to prevent grinding spatter from entering;

[0077] S5. Then start the grinding driving motor 733e to drive the two groups of grinding heads to rotate, and follow the path of the surrounding rotating arm 733c to complete the removal of burrs. The grinding driving motor 733e stops, and during this period, the disc spring energy storage member 734n continuously stores energy;

[0078] S6. The clamping assembly 740 is loosened, the conveying device 600 is started to retreat, and the rectangular tube 001 completely exits. At this time, the sawdust and grinding debris are also carried out together to complete the cleaning. The continuous path driving motor 733a is shut down. At this time, the disc spring energy storage member 734n releases the stored energy, causing the tension execution gear 734m to reverse. Under the action of the reset assist spring 734e, the inner pull shaft 734b, the pressing member 734c, and the flexible cleaning member 734a are reset at the same time;

[0079] S7. Start the rotating platform 720, rotate 180 degrees to reverse to the other side, and repeat the above steps to complete the processing of the cutting surface.

[0080] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for cutting and blanking with anti-deformation and deburring functions, mainly including: A support platform frame (100) standing on the ground, a left workbench surface (200) and a right workbench surface (300) installed on the support platform frame (100) and capable of sliding relatively back and forth and left and right, further comprising a cutting machine (400) that can be lifted between the two workbench surfaces, characterized in that there are two workpiece clamping devices (500) symmetrically fixed on the two workbench surfaces, a conveying device (600) respectively detachably fixed on the workpiece clamping devices (500), and a cutting surface processing device (700) that can be lifted corresponding to the lower part of the cutting machine (400); When used for cutting and blanking, the cutting surface processing device (700) descends below the workbench surface, and the left workbench surface (200) and the right workbench surface (300) move closer to the middle to form a closure. After the closure, there is a gap with the thickness of the saw blade. The conveying device (600) performs transmission. After the rectangular pipe is transmitted to the set position, the workpiece clamping device (500) performs clamping, and while clamping, the workpiece clamping device (500) rotates itself by a certain angle to form a certain angle with the saw blade of the descending cutting machine (400), that is, the starting point of the saw blade cutting is changed to the intersection of the plane and the vertical surface of the rectangular pipe, so that the cutting force no longer directly acts on the plane of the rectangular pipe; When used for cutting surface processing, the left workbench surface (200) and the right workbench surface (300) open to both sides, and the cutting surface processing device (700) rises to a height matching the rectangular pipe to process the cutting surface; The workpiece clamping device (500) includes: a lower fixing seat (510) fixed on the workbench surface, an upper mold (520) matching the lower fixing seat (510) and rotatably connected to each other, and a pushing and rotating clamping assembly (530) for pushing the upper mold (520) to rotate and clamping the rectangular pipe at the same time; An arc-shaped groove with a cross-section is provided at the center of the lower fixing seat (510), and an arc-shaped cylindrical surface matching the groove is provided at the center of the upper mold (520). The two are pivotally connected by setting hanging ears (01) at the outer ends. The lower fixing seat (510) is provided with an inclined surface facing the outside, and the pushing and rotating clamping assembly (530) is arranged on the side opposite to the inclined surface; the overall cross-section of the upper mold (520) is a semi-circular shape with a missing corner, and the shape of the missing corner is a right angle. The two surfaces of the right angle are a working vertical surface (521) and a working plane (522); The pushing and rotating clamping assembly (530) includes: more than two driving cylinders (531) with the closed ends hinged below the workbench surface, one end hinged to the telescopic rod of the driving cylinder (531), connected to the upper mold (520) through a first connecting piece (002) in the middle, and the other end being a free end for pressing the rectangular pipe, a pressing execution member (532), and an arc-shaped driven pressing member (533) that can slide relatively and fit on the outer surface of the upper mold (520); Both end faces of the arc-shaped driven pressing member (533) have extension segments extending towards the arc center side. Arc-shaped grooves are provided in the extension segments. The upper die holder (520) is provided with notch openings with the same radian as that of the extension segments for fitting. A pin is arranged in the notch opening and passes through the arc-shaped grooves in the extension segments, forming a fitting in which the two are closely attached and slide without separation. A second connecting member (534) is provided at the upper end of the arc-shaped driven pressing member (533), and the second connecting member (534) is used to connect the main body part of the conveying device (600). A reverse pushing spring (535) is provided at the lower end of the arc-shaped driven pressing member (533). Each pressing actuator (532) is combined together by arranging a linkage member (006).

2. The anti-deformation and deburring cutting and blanking device according to claim 1, characterized in that, A reset pulling spring (523) is hung on the side opposite to the inclined plane in the lower fixed seat (510). The other end of the reset pulling spring (523) is hung on the first connecting member (002). After the driving cylinder (531) retracts, the reset pulling spring (523) drives the upper die holder (520) to reset.

3. The anti-deformation and deburring cutting and blanking device according to claim 1, characterized in that, The conveying device (600) is generally divided into two parts: a main body part and an auxiliary part. The main body part is a belt-type transmission assembly (620), and the transmission actuator is a chain plate structure made of hard rubber. The auxiliary part is installed in the working plane (522). A plurality of long strip-shaped sinking grooves (003) are provided in the working plane (522). Partition walls (004) are provided on both long sides in the sinking grooves (003). Multiple groups of mounting holes (005) are arranged at intervals between the two partition walls (004). The auxiliary part of the conveying device (600) includes: a slidable roller assembly (610) sleeved in each group of mounting holes (005).

4. The anti-deformation and deburring cutting and blanking device according to claim 3, characterized in that, The slidable roller assembly (610) includes a roller (611), a mandrel (612) rotatably connected to the roller (611) and exposed on both sides with a tapered end, and a reset compression spring (613) sleeved on one side of the mandrel (612). The distal end of the side of the mandrel (612) where the reset compression spring is installed is a pressing end (614). The taper of the tapered parts exposed on both sides of the mandrel (612) is set in the same direction, that is, the diameter of the side away from the reset compression spring (613) is relatively large and the diameter of the other side is relatively small. After the slidable roller assembly (610) is installed, the tapered parts at both ends of the mandrel (612) are respectively sleeved into the mounting holes (005) on one side, and the roller (611) falls into the sinking grooves (003) and can displace a certain position along the axial direction of the mounting holes (005). Sinking holes for accommodating the reset compression spring (613) are provided at the positions corresponding to each mounting hole (005) on the side of the upper die holder (520) away from the working vertical surface (521). The pressing end (614) and a part of the reset compression spring (613) are exposed. By applying an external force on the pressing end (614), the mandrel (612) and the roller (611) can be synchronously moved inwards.

5. The anti-deformation and deburring cutting and blanking device according to claim 1, wherein The cutting surface processing device (700) includes: a lifting platform frame (710) disposed between a left workbench surface (200) and a right workbench surface (300), a rotating platform (720) rotatably mounted on the upper part of the lifting platform frame (710), a processing module (730) detachably fixed to the center of the rotating platform (720) for burr removal and sawdust cleaning, and a clamping assembly (740) fixed to the rotating platform (720) on one side of the processing module (730); the processing module (730) includes: a connection base (731) for detachably connecting to the rotating platform (720), a mounting base (732) fixedly installed on the upper part of the connection base (731), a grinding assembly (733) and a sawdust cleaning assembly (734) disposed in the mounting base (732), and a stable backrest (735) disposed on one side of the mounting base (732).

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