A split blanking and shearing device capable of self-adaptive alignment

Abstract

The present invention discloses a split type blanking and shearing device capable of self-adaptive alignment, which comprises a base, an automatic centering slide table, a scissors width adjusting device, a shearing frame and split type blanking scissors. An automatic centering slide table is arranged on the base. The automatic centering slide table comprises a slide table guide sleeve, and a slide plate is arranged on the guide sleeve of the slide table guide sleeve. The shearing frames are symmetrically arranged on the automatic centering slide table. A shearing oil cylinder, an oil cylinder buffer joint, an elastic member and a mounting plate with a guide post are arranged on the upper side of the shearing frame. A width adjusting lead screw is arranged on the lower side. The position of a single shearing frame on the slide table can be adjusted separately through the width adjusting lead screw, that is, the position of the split type blanking scissors relative to the plate type can be adjusted. The structure of the present invention is novel in design, convenient for replacing scissors, improves work efficiency, can be applicable to the shearing work of plates with the same structures at both ends and different widths in the middle. The moving knife with a guiding knife handle can automatically fall into the pre-cut on the plate, and can automatically return to the center to ensure the accuracy of the shearing position.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal shearing, and particularly to a split type blanking shearing device capable of self-adaptive alignment. Background Art

[0002] In the forming process of metal profiles, the sheet metal needs to go through multiple processes such as uncoiling, leveling, punching, cold bending, and shaping to process the required shape. After forming, the sheet metal needs to be cut to the required length to meet the application requirements. The common shearing structures on the market at present use hydraulic cylinders to drive the scissors to cut the sheet metal. The existing shearing mechanisms have the following defects: 1. When the sheet metal is relatively thick, the shearing knife contacts the sheet metal rigidly, which is easy to damage the scissors; 2. A pair of scissors of one specification can only be applicable to the shearing of profiles of one specification. When the profile changes, the scissors need to be replaced; 3. Replacing the scissors is time-consuming and laborious, and the cooperation and position accuracy of the scissors need to be adjusted, which affects the work efficiency; 4. When shearing, the shearing position cannot be automatically and accurately identified, and position deviation is likely to occur, resulting in inaccurate shearing position, affecting the quality of the product, and unable to meet the requirements in actual use. Therefore, there is an urgent need for improved technologies in the industry to solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a split type blanking shearing device capable of self-adaptive alignment, with novel structural design, convenient replacement of scissors, improved work efficiency, capable of being applicable to the shearing work of sheets with different widths, automatically adapting to the pre-cut position on the sheet metal, and capable of automatically returning to the center to ensure the accuracy of the shearing position, which can effectively solve the problems in the background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A split type blanking and shearing device capable of self-adaptive alignment, comprising a base, an automatic centering device, an automatic centering slide, a shear width adjustment device, a shear frame, a split type blanking shear, an upper mounting plate and a lower mounting plate; An automatic centering device and an automatic centering slide are arranged on the base, and the automatic centering device includes a centering support seat and a centering slide; The automatic centering slide includes slide guide columns and slide guide sleeves, and a slide plate is arranged on the slide guide sleeves; The automatic centering device is arranged between the base and the slide plate of the automatic centering slide; The shear frame includes an upper mounting plate and a lower mounting plate, and two shear frames are symmetrically arranged on the slide plate of the automatic centering slide. Guide pressing strips are arranged on the slide plate to limit the degrees of freedom of the shear frame in two directions; The shear width adjustment device is arranged between the lower side of the shear frame and the slide plate of the automatic centering slide. The shear width adjustment device is two width adjustment lead screws, specifically including two sets of width adjustment screw-nut pairs, two position indicators, two adjustment handles and a fixed seat. This device is used to adjust the relative positions of the two shear frames in the width direction of the profile. The split type blanking shear is arranged between the upper mounting plate and the lower mounting plate of the shear frame. The split type blanking shear includes an upper mounting plate, guide columns and sleeves, a split type blanking shear moving blade with a recognition port handle and a split type blanking shear fixed blade. The handle of the split type blanking shear moving blade is connected to the upper mounting plate through a guide pressing strip III. The lower template of the split type blanking shear fixed blade, that is, the base of the split type blanking shear fixed blade, is connected to the lower mounting plate through a guide pressing strip II; A guide recognition port structure corresponding to the pre-cut of the plate is arranged at the lower end of the split type blanking shear moving blade.

[0005] Further, the automatic centering device includes a centering support base and a centering slide table. The centering support base is fixed on the side of the base, and the centering slide table is fixed on the slide plate of the automatic centering slide table by screws. The centering support base is arranged on the base, and an adaptive spring, a spring backing plate, and an adjusting set screw are arranged inside the centering support base. On the centering slide table, there are a slide plate seat, a slider, a lead screw, and a guide optical rod for adjusting the position of the shear frame relative to the base in the left-right direction, that is, along the moving direction of the sheet. The lower end of the slider of the centering slide table is located in the middle of the centering support base. The two sides of the lower end of the slider are in contact with the adaptive springs arranged inside the centering support base. One end of the adaptive spring is in contact with the side of the slider of the centering slide table, and the other end is arranged in the round hole of the centering support base. A spring backing plate is arranged in the round hole of the support base and is in contact with the end of the adaptive spring. An adjusting set screw in contact with the spring backing plate is arranged outside the centering support base for adjusting the compression amount of the spring, thereby adjusting the balancing stiffness of the centering support base on the slider of the centering slide table. The upper side of the slider of the centering slide table is connected to the lead screw and the optical rod fixed on the slide plate seat of the centering slide table. Driven by the lead screw and guided by the optical rod, the slider and the slide plate seat can move relative to each other. Due to the action of the spring inside the centering support base on the slider, it will always return to the middle balance state, that is, the position relative to the base remains unchanged, thereby realizing the adjustment of the position of the slide plate seat relative to the base. When the cutting moving blade recognizes the notch, if the pre-notch of the sheet does not face the cutting moving blade exactly and is within the allowable error, the moving blade drops, and its notch chamfer part contacts the sheet. The sheet will give the moving blade a lateral thrust along the sheet moving direction. Under the action of this thrust, the cutting moving blade drives the shear frame to move along the sheet moving direction, thereby driving the slider of the centering slide table to move. After the cutting moving blade completes the cutting action, the moving blade separates from the sheet, and the lateral thrust of the sheet on the moving blade along the sheet moving direction disappears. Thus, the slider returns to the middle balance position under the action of the centering device. A scale is arranged on the side of the slide plate seat of the centering slide table, and a pointer corresponding to the scale is arranged on the upper side of the slider of the centering slide table. The pointer and the scale are used to indicate the fine adjustment amount of the position of the slide plate seat relative to the base.

[0006] Further, the automatic centering slide table is arranged on the base and includes a support base, a sliding support, slide guide columns, slide guide sleeves, and a slide plate. The slide guide columns are fixed inside the support base, the slide guide sleeves are fixed inside the sliding support, and the slide plate is fixed on the four sliding supports, so that the slide plate can move left and right along the slide rod.

[0007] Further, the shear width adjusting device is arranged between the lower side of the shear frame and the slide plate of the automatic centering slide table. Its fixed seat is fixed on the slide plate of the automatic centering slide table. One end of the width adjusting lead screw is fixed on the fixed seat, and the other end is respectively fixed on the lower mounting plates of the two shear frames through a nut pair. By rotating the width adjusting lead screw separately through each adjusting handle, the horizontal movement of the two shear frames can be driven, realizing the adjustment of the relative width of the split shears.

[0008] Further, an oil cylinder is provided on the top surface of the scissors frame. The telescopic end of the oil cylinder is connected to the upper mounting plate through a pressing block. An elastic member is provided between the upper mounting plate and the top surface of the scissors frame. The elastic member is a nitrogen spring. When the oil cylinder slowly descends and the blanking shearing blade aligns with the sheet material notch, the elastic element releases pressure and pushes the upper slide plate downward, ensuring that the joint always fits closely with the inner upper surface of the joint block. A gap is always maintained between the oil cylinder connector and the upper mounting plate, preventing the pressure of the oil cylinder from being transmitted to the moving blade, thus protecting the moving blade and the sheet material and completing the slow descent and notch alignment process of the moving blade. After the upper blade completes the notch alignment, the pressure of the elastic element is completely released and cannot push the upper mounting plate to continue descending. At this time, the piston rod of the oil cylinder continues to descend, and the oil cylinder connector contacts the upper surface of the upper mounting plate. The middle position detection switch of the three-position detection switch receives a signal, shielding the signal of the opposed switch in the buffer device, and the system switches to the fast shearing mode, starting to drive the upper blade to complete fast shearing by the oil cylinder. Guide columns are provided on the upper mounting plate, and the guide columns are connected to the scissors frame through sliding sleeves.

[0009] Further, the split-type blanking shear lower blade is a one-piece die core structure provided on the base. The die core includes a lower blade seat, a lower blade, and a single-side clamping blade plate. The lower blade seat, lower blade, and clamping blade plate on one side of the die core are connected and fixed through bolts and pins, and the other side is an open structure.

[0010] Further, a die core adjusting block is provided on the base. The adjusting block is fixed to the base through screws. A jackscrew is provided on the adjusting block, and the jackscrew abuts against the lower blade seat of the shearing die core, used to adjust the position of the shearing die core relative to the upper blade and the gap of the knife seam on the open side between the upper and lower blades.

[0011] Further, a wear-resistant cushion strip is provided between the lower mounting plate and the base of the split-type blanking shear fixed blade, increasing the connection strength between the lower mounting plate and the base of the split-type blanking shear fixed blade, making the fixation firm, increasing the wear resistance of the base. A guide column and guide sleeve are provided between the base of the split-type blanking shear fixed blade and the base of the split-type blanking shear moving blade.

[0012] Further, two sets of split-type blanking scissors are provided, and the structures of the split-type blanking scissors are symmetrical. The notch structure on the split-type blanking shear moving blade is a chamfer structure.

[0013] Further, long slot holes with the same width but different lengths are pre-cut in the middle part of the sheet material sheared by the split-type blanking scissors, and the split-type scissors only cut off the two side parts of the sheet material.

[0014] Further, a buffer mechanism is also included. The buffer mechanism includes a joint block and an oil cylinder connector. The joint block is fixed on the upper surface of the upper mounting plate, and the oil cylinder connector is slidably connected to the joint block. A buffer gap is left between the lower part of the oil cylinder connector and the upper mounting plate. Opposed switches are provided on the joint block on both sides of the buffer gap, and the telescopic end of the oil cylinder is connected to the oil cylinder connector.

[0015] Further, a detection bracket is provided on the top surface of the shearing frame. A three-position detection switch is provided on the detection bracket, and the detection head of the three-position detection switch is installed at the top end of the guide post; it is used to detect the position of the upper mounting plate. When the detection switch is in the upper limit position, the system is in a low-pressure and low-speed working mode to complete the operation of recognizing the opening of the upper blade of the blanking shear; when the detection switch is in the middle position, the system switches from the low-pressure and low-speed working mode to the high-pressure and high-speed mode to complete the rapid cutting operation of the plate; when the detection switch is in the lower position, the scissors complete the cutting of the plate, and the scissors start to quickly return to the starting position.

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

[0017] 1. A width adjustment lead screw is provided on the present invention. By means of the width adjustment lead screw, the position of the lower mounting plate can be adjusted, and then the position of the shearing frame can be adjusted, and the position between the shearing frames can be adjusted, so as to meet the shearing control of plates with different widths. When the chamfer of the opening recognition structure is not directly opposite the reserved opening, there is a dislocation. The split blanking shear moving blade drives the shearing frame to move under force. The shearing frame drives the whole slide plate to move on the slide guide sleeve. The adaptive spring pushes the slider on the centering slide table to move, driving the whole slide plate to return to the center, and then making the split blanking shear moving blade align with the reserved opening to ensure the accuracy of the shearing position.

[0018] 2. An oil cylinder is provided on the present invention. When the oil cylinder slowly descends and the scissors recognize the opening of the plate, the elastic element releases pressure and pushes the upper slide plate to move downward, so that the joint and the joint block are always in contact. There is always a gap between the oil cylinder connection head and the upper slide plate, and the pressure of the oil cylinder cannot be transmitted to the moving blade, playing a role in protecting the moving blade and the plate. The slow descent and opening recognition process of the moving blade are completed.

[0019] 3. A three-position detection switch is provided on the present invention. By means of the three-position detection switch, the position of the guide post can be detected in real time, and then the cutting position of the split blanking shear moving blade can be monitored, which is convenient for control. Through the opening recognition structure, the split blanking shear moving blade can be accurately inserted into the pre-cut opening on the plate, thus ensuring the accuracy of the shearing position. The two groups of split blanking scissors cut each half of the plate respectively, thus completing the cutting of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention;

[0021] Figure 2 It is a left-view structural diagram of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the buffer mechanism of the present invention;

[0023] Figure 4 It is an axonometric drawing of the present invention;

[0024] Figure 5 It is a schematic enlarged structure diagram of part A of the present invention;

[0025] Figure 6 It is a schematic structure diagram of the split blanking shear moving blade of the present invention;

[0026] Figure 7 It is a schematic enlarged structure diagram of part B of the present invention;

[0027] Figure 8 It is a schematic structure diagram of the reserved notch on the plate of the present invention;

[0028] Figure 9 It is a schematic enlarged structure diagram of part C of the present invention;

[0029] Figure 10 It is a schematic structure diagram of the automatic centering slide of the present invention;

[0030] Figure 11 It is a schematic structure diagram of the split cutting of the present invention;

[0031] Figure 12 It is an axonometric view of the direction of the automatic centering device of the present invention;

[0032] Figure 13 It is a schematic structure diagram of the width adjustment lead screw of the width adjustment structure of the present invention.

[0033] In the figure: 1 base, 2 centering slide, 3 guide strip Ⅰ, 4 wear-resistant strip, 5 guide strip Ⅱ, 6 die core adjustment block, 7 shear frame, 8 split blanking scissors, 9 guide pillar and guide sleeve, 10 guide strip Ⅲ, 11 hard block, 12 elastic member, 13 oil cylinder, 14 oil cylinder joint, 15 joint block, 16 opposed switch, 17 detection bracket, 18 three-position detection switch, 19 split blanking shear moving blade, 20 notch recognition structure, 21 width adjustment lead screw, 22 slide guide sleeve, 23 scale, 24 pointer, 25 adaptive spring, 26 spring backing plate, 27 adjustment screw, 28 slide plate, 29 buffer gap, 30 lower mounting plate, 31 upper mounting plate, 32 split blanking shear fixed blade, 33 centering support seat, 34 fixing screw, 35 adjustment block, 36 adjustment screw, 37 reserved notch. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-13, the present invention provides a technical solution: a split type blanking and shearing device capable of self-adaptive alignment, which includes a base 1, an automatic alignment device, an automatic alignment slide table, a scissors width adjustment device, a shear frame 7, a split type blanking scissors 8, an upper mounting plate 31 and a lower mounting plate 30, and a switch protection device. An automatic alignment device and an automatic alignment slide table are arranged on the base 1. The automatic alignment device includes a centering support seat 33 and an alignment slide table 2; the automatic alignment slide table includes a slide table guide sleeve 22, and a slide plate 28 is arranged on the guide sleeve of the slide table guide sleeve 22; an adjustable automatic alignment device is arranged between the slide plate 28 and the base 1; the shear frames 7 are symmetrically arranged on the slide plate 28, and a width adjustment lead screw 21 is arranged on the lower side of the shear frame 7. The width adjustment lead screw 21 is the scissors width adjustment device. As shown in the appendix Figure 13 , the specific structure includes two width adjustment lead screw nut pairs, two position indicators, two adjustment handles, and a fixed seat. This device is used to adjust the relative positions of the two shear frames 7 in the width direction of the profile. By the width adjustment lead screw 21, the position of the lower mounting plate 30 can be adjusted, and then the position of the shear frame 7 can be adjusted to adjust the position between the shear frames 7, so as to meet the shearing control of plates with different widths. The slider of the width adjustment lead screw 21 is connected to the lower mounting plate 30. Specifically, one end of the width adjustment lead screw is fixed on the slide plate 28 through a fixed seat, and the lead screw nut slider is fixed on the lower mounting plate 30; from the appendix of the specification Figure 1 and the appendix of the specification Figure 4It can be seen that the scissors frame 7 is positioned on the slide plate through the guide pressing strip I 3 and can move back and forth along the slide plate. When the width adjustment lead screw 21 rotates, it drives the scissors frame 7 to move along the guide pressing strip I 3 on the slide plate 28. The rotation of the width adjustment lead screw 21 drives the movement of the scissors frame 7. An upper mounting plate 31 is provided on the scissors frame 7. The split blanking scissors 8 are arranged between the upper mounting plate 31 and the lower mounting plate 30. The split blanking scissors 8 include a split blanking moving knife 19 with a notched handle and a split blanking fixed knife 32. The handle of the split blanking moving knife 19 is connected to the upper mounting plate 31 through the guide pressing strip III 10. The base of the split blanking fixed knife 32 is connected to the lower mounting plate 30 through the guide pressing strip II 5. A die core adjustment block 6 is provided on the lower mounting plate 30. An adjustment screw 36 for the position of the split blanking fixed knife 32 is provided on the die core adjustment block 6. The die core adjustment block 6 includes a fixing screw 34, an adjustment block 35, and an adjustment screw 36. The adjustment block 35 is fixed to the lower mounting plate 30 through the fixing screw 34. One end of the adjustment screw 36 passes through the adjustment block 35 and is screwed into the threaded hole on the lower side of the lower part of the split blanking fixed knife 32, realizing the function of adjusting and positioning the split blanking fixed knife 32. A U-shaped notch can also be opened on the adjustment block 35, and a groove structure is designed at the end of the adjustment screw 36, which is installed in the U-shaped notch on the adjustment block 35. One end of the adjustment screw 36 is screwed into the threaded hole of the lower plate of the split blanking fixed knife 32. By advancing and retracting the adjustment screw 36, the position of the split blanking fixed knife 32 on the lower mounting plate 30 is adjusted. This is common knowledge in the technical field. Since the adjustment means is a conventional technology, other adjustment structures can also be set, and it will not be specifically described in detail here. A wear-resistant cushion strip 4 is provided between the lower mounting plate 30 and the base of the split blanking fixed knife 32. The connection strength between the lower mounting plate and the base of the split blanking fixed knife is increased through the wear-resistant cushion strip, making it firmly fixed. A guide pillar and guide sleeve 9 are provided between the base of the split blanking fixed knife 32 and the base of the split blanking moving knife 19. Through the guide pillar and guide sleeve 9, it is ensured that the split blanking moving knife 19 operates accurately and stably during the shearing process. A guide notching structure 20 corresponding to the pre-cut of the plate is provided at the lower end of the split blanking moving knife 19.

[0036] The automatic centering slide is arranged on the base. The automatic centering slide is common knowledge in the field, as shown in Figure 10 the attached figure. The specific structure of the automatic centering slide includes a support seat, a sliding support, a slide guide pillar, a slide guide sleeve 22, and a slide plate 28. The slide guide pillar is fixed in the support seat, the slide guide sleeve is fixed in the sliding support, and the slide plate is fixed on four sliding supports, so that the slide plate can move left and right along the slide rod.

[0037] On both sides of the slider of the centering slide table 2, it is in contact with the adaptive spring 25 arranged inside the centering support seat 33. One end of the adaptive spring 25 is in contact with the side surface of the slider of the centering slide table 2, and the other end is arranged in the round hole of the centering support seat 33. A spring backing plate 26 is arranged in the round hole of the centering support seat 33 and is in contact with the end of the adaptive spring 25. An adjusting setscrew 27 in contact with the spring backing plate 26 is arranged on the outside of the centering support seat 33 for adjusting the compression amount of the spring; The centering slide table 2 also includes a lead screw and a guide optical rod for adjustment. As shown in the appendix Figure 5 As shown, the centering slide table 2 is used for adjusting the left and right positions of the shear frame 7 relative to the base. The centering slide table 2 is common general knowledge in the field. A scale 23 is arranged on the side surface of the slide plate of the centering slide table 2, and a pointer 24 corresponding to the scale 23 is arranged on the slider of the centering slide table 2; The position of the centering slide table 2 relative to the centering support seat 33 is adjusted by the lead screw to finely adjust the accurate position of the shear frame 7 in the length direction of the production line.

[0038] This part also needs to be described in combination with the force and motion conditions described in the previous text.

[0039] When the chamfer of the alignment structure 20 is not directly facing the reserved opening, misalignment occurs. When the chamfer of the alignment part of the split blanking shear moving blade 19 contacts the pre-cut of the sheet, the sheet will give the moving blade a lateral component force along the sheet feeding direction. The moving blade drives the shear frame 7 to move under the force. The shear frame 7 drives the entire slide plate 28 to move on the slide guide sleeve 22. The adaptive spring 25 on one side inside the centering fixed seat is pushed and compressed by the slider on the centering slide table 2, and the springs on both sides are in an unbalanced force state. When the shearing action is completed, the moving blade separates from the sheet, and the force between the two disappears. The compressed adaptive spring 25 on one side inside the centering fixed seat drives the entire slide plate 28 to return to the center. The springs on both sides inside the centering fixed seat continue to return to the balanced state, and then the split blanking shear moving blade 19 returns to the set position, aligning with the pre-cut of the sheet to ensure the accuracy of the shearing position. The split blanking shears 8 are set in two groups, and the structure of the split blanking shears 8 is symmetrical. The alignment structure on the split blanking shear moving blade 19 is a chamfer structure; Through the alignment structure 20, the split blanking shear moving blade 19 can be accurately inserted into the pre-cut on the sheet, thereby ensuring the accuracy of the shearing position. By cutting one side of the sheet with each of the two groups of split blanking shears 8, the cutting of the sheet is completed.

[0040] The upper top surface of the centering slide table 2 is connected to the slide plate 28 by screws, and the middle support seat 33 is connected to the base by screws. From the appendix of the specification Figure 2Its specific connection structure can be clearly seen in the figure; the specific structure of the centering slide 2 includes a guide post support, a guide post, a slider, and a lead screw. The two ends of the guide post are fixed on the guide post support, the slider is set on the guide post and can slide relative to the guide post, the two ends of the lead screw are set on the guide post support, and the slider is connected to the lead screw through a lead screw nut; because the lower side of the slider is contacted by the spring in the return center fixed seat, it is always in the middle position of the return center fixed seat, that is, the position relative to the return center fixed seat remains unchanged, and the position relative to the base remains unchanged, so rotating the lead screw can adjust the position of the slider relative to the slide 28, that is, adjust the position of the slide relative to the base. The pointer 24 corresponding to the scale 23 is used to display the fine adjustment amount of the slide relative to the base. The centering slide 2 is common knowledge in the field.

[0041] As shown in the attached Figure 9 As shown, the spring washer 26 is installed in the spring positioning hole of the return support seat 33 to support the spring. The other side of the spring washer 26 is supported by the adjusting top screw 27. When the adjusting top screw 27 moves forward and backward, it can push the spring washer 26 to move, and the spring washer 26 pushes the adaptive spring 25 to move.

[0042] The front end of the blade of the split blanking shearing knife 19 is provided with a chamfering guide recognition structure 20; when the chamfer of the recognition structure 20 is not aligned with the reserved cut 37 of the plate, when the split blanking shearing knife 19 falls, the inclined side surface of the chamfered part of the front end of the split blanking shearing knife 19 contacts the side surface of the pre-cut of the plate, and the plate will give the split blanking shearing knife 19 a lateral force, so that the split blanking shearing knife 19 moves laterally. The split blanking shearing knife 19 and the shear frame 7 are an integral structure, and the lateral movement of the split blanking shearing knife 19 The movement drives the shear frame 7 to move laterally, and further drives the slide plate 28 to move laterally to complete the shearing action; when the shearing action is completed, the split blanking shear knife 19 rises and lifts up, separates from the plate, and there is no longer a lateral force between the split blanking shear knife 19 and the plate, then the slide plate 28 returns to the set middle position under the action of the adaptive spring 25; by adjusting the adjusting top screws 27 on both sides of the adaptive spring 25, the compression state of the adaptive springs 25 on both sides can be adjusted to adjust the middle position of the slide plate 28.

[0043] The normal position of the split blanking shearing knife 19 is fixed. The reserved cutout 37 of the plate is theoretically designed to stop just below the split blanking shearing knife 19. However, there is a certain small error in the movement of the plate, so an automatic centering device is needed to adapt to the position error of the plate.

[0044] The guide opening structure 20 adds a non-cutting edge portion to the lower side of the cutter, and the portion is a slender chamfered structure. The design of the chamfered structure facilitates the cutter body to fall into the reserved cut 37 of the plate to be cut; Figure 8 The cutter is provided with a structure diagram for identifying the cutter opening and a reserved cutout 37 on the plate.

[0045] An oil cylinder is provided on the top surface of the scissors frame. The telescopic end of the oil cylinder is connected to the upper mounting plate. An oil cylinder 13 is provided on the top surface of the scissors frame 7, and the telescopic end of the oil cylinder 13 is connected to the upper mounting plate 31. An elastic member 12 is provided between the upper mounting plate 31 and the top surface of the scissors frame 7. The elastic member is a nitrogen spring. When the oil cylinder is pressing down and the pressure is insufficient, the elastic member releases pressure and can still cut the sheet material, ensuring the normal operation of the shearing work. Guide posts are provided on the upper mounting plate 31, and the guide posts are connected to the scissors frame 7 through sliding sleeves.

[0046] The buffer mechanism includes a joint block 15 and an oil cylinder joint 14. The joint block 15 is fixed on the upper surface of the upper mounting plate 31. The oil cylinder joint 14 is slidably connected to the joint block 15. A buffer gap 29 is left below the oil cylinder joint 14. Opposite switches 16 are provided on the joint block 15 on both sides of the buffer gap 29. The telescopic end of the oil cylinder 13 is connected to the oil cylinder joint 14. When the middle position switch signal of the three-position detection switch has no response, the oil cylinder joint 14 enters the buffer gap 29, blocks the opposite switch 16, and transmits the detection signal to the external controller. The oil cylinder 13 stops operating, indicating that the split blanking shearing moving blade 19 fails to complete the notch recognition action and the split blanking shearing moving blade 19 cannot perform shearing, playing a role in protecting the split blanking shearing moving blade 19 and preventing damage to the split blanking shearing moving blade 19. When the middle position switch signal of the three-position detection switch responds, the signal of the opposite switch 16 is automatically shielded, and the system switches to the high-speed and high-pressure shearing mode. The oil cylinder joint 14 enters the buffer gap 29 and continues to fall to contact the upper mounting plate, quickly pushing the upper mounting plate to fall, driving the shearing upper blade to complete the shearing action. When the detection switch is in the low position, the scissors complete the cutting of the sheet material and the scissors start to quickly return to the starting position.

[0047] A detection bracket 17 is provided on the top surface of the scissors frame 7. A three-position detection switch 18 is provided on the detection bracket 17. The three-position detection switch 18 is a switch protection device, and the detection head of the three-position detection switch 18 is installed at the top end of the guide post. The position of the guide post can be detected in real time through the three-position detection switch 18, and thus the real-time position of the split blanking shearing moving blade 19 can be monitored, which is convenient for control. The structure of the present invention is novel in design, the scissors are convenient to replace, the work efficiency is improved, it can be applicable to the shearing work of sheet materials with different widths, identify the pre-cut on the sheet material, and can automatically return to the center to ensure the accuracy of the shearing position.

[0048] The detection bracket 17, three-position detection switch 18, and opposed switch 16 are in a logical relationship with each other. When there is no signal from the middle position switch of the three-position detection switch 18, it indicates that the chamfer of the recognition port of the split blanking shear moving blade 19 has not fallen into the reserved cut 37 of the sheet material. In this case, the oil cylinder joint 14 continues to fall, enters the buffer gap, blocks the signal of the opposed switch 16, emits an alarm signal, and stops shearing; when there is a signal from the middle position switch of the three-position detection switch 18, it indicates that the chamfer of the recognition port of the split blanking shear moving blade 19 has completely fallen into the pre-cut of the sheet material, and the shearing action can be realized; in this case, the signal of the opposed switch 16 is shielded, no alarm signal is emitted anymore, the oil cylinder joint 14 continues to fall, enters the buffer gap, contacts the upper mounting plate, and finally contacts the split blanking shear moving blade 19 to realize the sheet material shearing action; therefore, the shearing action can be realized.

[0049] Method for implementing the shearing and alignment action: The sheet passes through the material passing channel in the split blanking shearing fixed knife 32. During shearing, the telescopic end of the oil cylinder 13 drives the upper mounting plate 30 downward, and then drives the split blanking shearing moving knife 19 downward. The alignment structure 20 at the lower end of the split blanking shearing moving knife 19 penetrates into the reserved opening of the sheet. The split blanking shearing moving knife 19 and the split blanking shearing fixed knife 32 cooperate up and down to cut the sheet. The position of the lower mounting plate 30 can be adjusted through the width adjustment lead screw 21, and then the position of the shearing frame 7 is adjusted to adjust the position between the shearing frames 7, so as to meet the shearing control of sheets with different widths. When the pre-cut position of the sheet moves to directly below the split blanking shearing moving knife 19, the three-position detection switch is in the high-position switch state, and the moving knife 19 starts to drop for alignment. When the chamfer of the alignment structure 20 is not directly facing the reserved opening and there is a misalignment within the allowable error, when the chamfer of the alignment part of the split blanking shearing moving knife 19 contacts the pre-cut of the sheet, the sheet will give the moving knife a lateral component force along the sheet feeding direction. The moving knife drives the shearing frame 7 to move under the force, and the shearing frame 7 drives the whole slide plate 28 to move on the slide guide sleeve 22. The adaptive spring 25 on one side inside the centering fixed seat is pushed and compressed by the slider on the centering slide table 2, so that the shearing moving knife 19 is directly facing the pre-cut 37 of the sheet. When the middle-position switch signal of the three-position detection switch responds, it indicates that the alignment action is completed. The middle-position switch signal shields the signal of the opposed switch 16. The oil cylinder joint 14 continues to drop, enters the buffer gap, and contacts the upper mounting plate, starting the fast shearing mode. If the position deviation between the shearing moving knife 19 and the pre-cut 37 of the sheet is large and exceeds the allowable error, the alignment action cannot be completed and the middle-position switch signal has no response. At this time, the piston rod of the oil cylinder continues to extend. When the oil cylinder joint 14 enters the buffer gap 29 and blocks the opposed switch 16, since there is no signal from the middle-position detection switch, the signal of the opposed switch 16 is not shielded. The opposed switch 16 transmits the detection signal to the external controller, and the oil cylinder 13 stops operating. The split blanking shearing moving knife 19 cannot perform shearing, which plays a role in protecting the split blanking shearing moving knife 19 and preventing damage to the split blanking shearing moving knife 19.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split-type blanking and shearing device capable of self-adaptive alignment, comprising a base (1), an automatic centering slide table, a shearing frame (7), split-type blanking scissors (8), an upper mounting plate (31) and a lower mounting plate (30), characterized in that: An automatic centering slide is provided on the base (1). The automatic centering slide includes a slide guide sleeve (22), and a slide plate (28) is arranged on the guide sleeve of the slide guide sleeve (22); an adjustable automatic centering device is arranged between the slide plate (28) and the base (1); the shearing frames (7) are symmetrically arranged on the slide plate (28), a width adjustment lead screw (21) is arranged on the lower side of the shearing frames (7), and the slider of the width adjustment lead screw (21) is connected to the lower mounting plate (30); an upper mounting plate (31) is arranged on the shearing frames (7), and the split blanking scissors (8) are arranged between the upper mounting plate (31) and the lower mounting plate (30). The split blanking scissors (8) include a split blanking fixed knife (32) and a split blanking moving knife (19) with a knife handle. The knife handle of the split blanking moving knife (19) is connected to the upper mounting plate (31) through a guide pressing strip III (10), and the base of the split blanking fixed knife (32) is connected to the lower mounting plate (30) through a guide pressing strip II (5); a guide recognition port structure (20) corresponding to the pre-cut of the plate is arranged at the lower end of the split blanking moving knife (19).

2. The split type blanking and shearing device capable of self-adaptive alignment according to claim 1, wherein: The automatic centering device includes a centering support seat (33) and a centering slide (2). The centering slide (2) is arranged on the slide plate (28), the centering support seat (33) is fixed on the side of the base (1), the lower end of the slider of the centering slide (2) is located in the middle of the centering support seat (33), an adaptive spring (25) is arranged between the slider of the centering slide (2) and the centering support seat (33), a spring backing plate (26) is arranged at one end of the adaptive spring (25), an adjusting screw (27) for adjusting the compression amount of the adaptive spring (25) is arranged on the centering slide (2), a scale (23) is arranged on the side of the slide plate (28), and a pointer (24) corresponding to the scale (23) is arranged on the slider of the centering slide (2).

3. The split type blanking and shearing device capable of self-adaptive alignment according to claim 1, wherein: An oil cylinder (13) is arranged on the top surface of the shearing frame (7), and the telescopic end of the oil cylinder (13) is connected to the upper mounting plate (31). An elastic member (12) is arranged between the upper mounting plate (31) and the top surface of the shearing frame (7). Guide posts are arranged on the upper mounting plate (31), and the guide posts are connected to the shearing frame (7) through sliding sleeves.

4. The split type blanking and shearing device capable of self-adaptive alignment according to claim 3, wherein: It further includes a buffer mechanism. The buffer mechanism includes a joint block (15) and an oil cylinder joint (14). The joint block (15) is fixed on the upper surface of the upper mounting plate (31), and the oil cylinder joint (14) is slidably connected to the joint block (15). A buffer gap (29) is left below the oil cylinder joint (14), and opposed switches (16) are arranged on the joint block (15) on both sides of the buffer gap (29). The telescopic end of the oil cylinder (13) is connected to the oil cylinder joint (14).

5. The split type blanking and shearing device capable of self-adaptive alignment according to claim 3, wherein: A detection bracket (17) is arranged on the top surface of the shearing frame (7), a three-position detection switch (18) is arranged on the detection bracket (17), and the detection head of the three-position detection switch (18) is installed at the top end of the guide post.

6. The split type blanking and shearing device capable of self-adaptive alignment according to claim 1, characterized in that: A wear-resistant gasket strip (4) is arranged between the lower mounting plate (30) and the base of the split blanking shearing fixed knife (32), and a guide pillar and bushing (9) is arranged between the base of the split blanking shearing fixed knife (32) and the base of the split blanking shearing moving knife (19).

7. The split type blanking and shearing device capable of self-adaptive alignment according to claim 3, wherein: The split blanking scissors (8) are arranged in two groups, and the structure of the split blanking scissors (8) is symmetrical.

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