Steel plate cutting device capable of conveniently adjusting cutting angle

Abstract

The invention belongs to the technical field of steel plate cutting, and particularly relates to a steel plate cutting device capable of conveniently adjusting the cutting angle, which comprises a machining platform, an abutting plate is fixedly connected to the upper end of the machining platform, two clamping plates are linearly and slidably connected to the side wall of the abutting plate, and two hydraulic cylinders are fixedly connected to the upper end of the machining platform; feeding plates are fixedly connected to the output ends of the two hydraulic cylinders correspondingly, and cutting wheels are arranged on the sides, close to the two clamping plates, of the feeding plates. And the cutting mechanism is used for driving a cutting wheel to linearly move so as to cut the steel plate, and the cutting mechanism comprises a transverse guide rail which is slidably connected to the side wall of the feeding plate in the vertical direction. Through the arrangement of the detection mechanism, the thickness of a steel plate can be automatically and accurately detected through the cooperation of a pressing plate and a third lead screw; and the control mechanism is linked with the first regulation and control mechanism and the second regulation and control mechanism through hydraulic transmission based on the thickness data, so that the cutting speed is automatically matched with the feeding speed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel plate cutting, and particularly relates to a steel plate cutting device facilitating cutting angle adjustment. BACKGROUND

[0002] The steel plate cutting device is a kind of equipment for cutting steel plates (including ordinary steel plates, stainless steel plates, alloy steel plates, etc.) into specific shapes, sizes or contours through mechanical, thermal, electrical and other means. The core function is to separate the material by destroying the local structure of the steel plate (such as melting, vaporization, fracture, etc.) through the relative movement of the cutting tool and the steel plate.

[0003] The traditional cutting device often uses a rotating disc cutter to mechanically cut the steel plate. However, the above cutting device often has the following technical problems during use:

[0004] Firstly, the cutting angle is not easy to adjust. The cutting wheel angle of the traditional device is usually fixed by manual mechanical locking. The adjustment requires stopping operation, and the angle positioning relies on manual experience, with large precision error (usually error ≥ ±2°). It is difficult to meet the high-precision splicing processing requirements, especially in the cutting of special-shaped parts. Frequent angle adjustment significantly reduces the processing efficiency and cannot adapt to complex metal cutting conditions.

[0005] Secondly, the thickness adaptability is poor. Different thicknesses of steel plates (such as thin plates ≤6mm and thick plates >20mm) have significant differences in cutting speed and feeding speed requirements. However, the existing device often requires manual adjustment of the cutting motor speed and feeding rate, which is not only cumbersome to operate, but also prone to cutting defects due to improper parameter matching. Thick plates often have "half-cutting" or slag accumulation due to insufficient speed, and thin plates are prone to edge "overburning" and "deformation" due to excessive energy.

[0006] Therefore, it is a key requirement to develop a steel plate cutting device that can conveniently adjust the cutting angle, automatically adapt the thickness of the parameters, and accurately position the parameters. SUMMARY

[0007] The purpose of the present application is to solve the problems in the background art. The steel plate cutting device facilitates cutting angle adjustment based on steel plate thickness data, and automatically adapts the cutting speed and feeding speed through the hydraulic transmission linkage of the first and second control mechanisms.

[0008] To achieve the above purpose, the application adopts the following technical solutions:

[0009] A steel plate cutting device facilitating cutting angle adjustment, comprising:

[0010] The upper end of the machining platform is fixedly connected with a resisting plate, the side wall of the resisting plate is linearly and slidably connected with two clamping plates, the upper end of the machining platform is fixedly connected with two hydraulic cylinders, the output ends of the two hydraulic cylinders are fixedly connected with feeding plates, and the feeding plates are provided with cutting wheels on the side close to the two clamping plates.

[0011] The cutting mechanism is used for driving the cutting wheel to linearly move to realize the cutting work on the steel plate, and comprises a transverse guide rail which is slidably connected to the side wall of the feeding plate in the vertical direction, a first screw rod which is rotatably connected in the transverse guide rail, a moving block which is threadedly connected to the first screw rod, the moving block which is linearly and slidably connected in the transverse guide rail, a U-shaped adjusting plate which is rotatably connected to the end of the moving block away from the transverse guide rail through a rotating shaft, the cutting wheel which is rotatably connected between the two side walls of the U-shaped adjusting plate, a first motor which is fixedly connected to the side wall of the moving block and used for adjusting the angle of the U-shaped adjusting plate, a second motor which is fixedly connected to the outer wall of the transverse guide rail and used for driving the first screw rod, and a cutting motor which is fixedly connected to the lower end of the U-shaped adjusting plate and used for driving the cutting wheel.

[0012] Preferably, the side wall of the feeding plate away from the transverse guide rail is fixedly connected with a mounting block, the lower end of the mounting block is rotatably connected with a second screw rod, the second screw rod is threadedly connected with a lifting block, the feeding plate is provided with a first limiting slot, and the lifting block is fixedly connected with the side wall of the transverse guide rail through the first limiting slot.

[0013] Preferably, the two clamping plates are provided with a detection mechanism used for detecting the thickness of the steel plate, the detection mechanism comprises a pressing plate arranged between the two clamping plates, the two ends of the pressing plate are telescopically arranged and the telescopic ends are fixedly connected with the two clamping plates respectively, the side walls of the two clamping plates away from each other are fixedly connected with two supporting blocks respectively, the third screw rod is rotatably connected between the two supporting blocks on the same side, the third screw rod is threadedly connected with a transmission block, the clamping plate is provided with a second limiting slot, the transmission block is slidably connected to the inner wall of the second limiting slot in the vertical direction, and the supporting block on the same side and located on the upper side is fixedly connected with a third motor used for driving the third screw rod.

[0014] Preferably, the side wall of the resisting plate is provided with a first regulating mechanism used for adjusting the cutting speed of the cutting wheel and a second regulating mechanism used for adjusting the feeding speed of the cutting wheel.

[0015] Preferably, the first regulating mechanism comprises two first supporting blocks fixedly connected to the side wall of the resisting plate, an electric resistance rod fixedly connected between the two first supporting blocks, and a sliding piece slidably connected to the electric resistance rod, and the electric resistance rod and the sliding piece constitute a sliding rheostat electrically connected with the cutting motor.

[0016] Preferably, the second regulating mechanism comprises an elastic mounting rod arranged on the side of the stop plate, recesses are arranged on the two side walls of the elastic mounting rod, sliding blocks are arranged on the two sides of the elastic mounting rod and are embedded in the recesses, the two sliding blocks are linearly close to or away from each other, two second supporting blocks are fixedly connected to the position above the elastic mounting rod, a reciprocating screw rod is rotatably connected between the two second supporting blocks, a fourth motor is fixedly connected to the side wall of one of the second supporting blocks and is used to drive the reciprocating screw rod, a reciprocating block is threadedly connected to the reciprocating screw rod, the reciprocating block is linearly and slidingly connected to the side wall of the stop plate, a conductive sheet is fixedly connected to the lower end of the reciprocating block, a conductive strip is fixedly connected to the upper end of the elastic mounting rod, the conductive sheet and the conductive strip are connected in series with the second motor, extension rods are fixedly connected to the two ends of the elastic mounting rod, adjusting blocks are fixedly connected to the ends of the extension rods away from the elastic mounting rod, the adjusting blocks are linearly and slidingly connected to the side wall of the stop plate, two symmetrically distributed stop blocks are fixedly connected to the stop plate, and a first spring is arranged between the adjusting block and the corresponding stop block.

[0017] Preferably, the elastic mounting rod and the extension rods at the two ends are made of 50CrVA elastic alloy and have a tendency to bend away from the reciprocating screw rod.

[0018] Preferably, the side wall of one of the clamping plates is provided with a control mechanism for automatically controlling the first regulating mechanism and the second regulating mechanism according to the thickness of the steel plate detected by the detection mechanism, the control mechanism comprises a guide rod slidingly connected to one of the transmission blocks, an inclined guide plate is fixedly connected to the side wall of the clamping plate, a guide wheel is rotatably connected to the side wall of the guide rod close to the inclined guide plate, the guide wheel rolls in contact with the inclined guide plate, a lateral liquid storage frame is fixedly connected to the side wall of the clamping plate close to the guide rod, a piston plate is sealingly and slidingly connected to the inner wall of the lateral liquid storage frame, a second spring is arranged between the piston plate and the inner wall of the lateral liquid storage frame, a vertical sliding groove is arranged in the side of the piston plate close to the guide rod, the guide rod is slidingly connected to the vertical sliding groove in the vertical direction, a circular control cylinder and a square control cylinder are fixedly connected to the side wall of the stop plate, a first piston block is sealingly and slidingly connected in the circular control cylinder, a first push rod is fixedly connected between the first piston block and the sliding sheet, a liquid outlet pipe is fixedly and communicatively connected to the end of the circular control cylinder away from the sliding sheet, two symmetrically distributed liquid guide cavities are arranged in the square control cylinder, a second piston block is sealingly and slidingly connected to the inner wall of the liquid guide cavities, a second push rod is fixedly connected between the second piston block and the corresponding sliding block, a three-way pipe is fixedly connected to the lower end of the square control cylinder, the two ends above the three-way pipe are respectively in communication with the interiors of the two liquid guide cavities, and the other end of the three-way pipe and the liquid outlet pipe are in communication with the interior of the lateral liquid storage frame.

[0019] Compared with the prior art, the steel plate cutting device convenient to adjust the cutting angle has the advantages that:

[0020] 1、The present application realizes the electric precise adjustment of the cutting wheel angle through the linkage design of the U-shaped adjusting plate in the cutting mechanism and the first motor, without manual locking, and can automatically adapt the inclination angle according to the thickness of the steel plate, greatly improving the machining precision and efficiency in the scenes of special-shaped part cutting, bevel splicing and the like.

[0021] 2、The present application can automatically and accurately detect the thickness of the steel plate through the cooperation of the pressing plate and the third screw rod by setting a detection mechanism; based on the thickness data, the control mechanism links the first and second regulating mechanisms through hydraulic transmission, realizes the automatic adaptation of the cutting speed and the feeding speed, increases the cutting motor speed when the plate is thick (enhances the penetration), reduces the feeding speed (ensures the heat penetration), reduces the speed when the plate is thin (avoids overburning), and increases the feeding speed (reduces heat accumulation), effectively avoiding the parameter deviation problem of traditional manual adjustment.

[0022] 3、The present application realizes the full-process automatic operation from the steel plate positioning and clamping (the clamping plate is accurately positioned by the screw nut assembly), thickness detection, angle adjustment, speed / feeding parameter adaptation, cutting execution and equipment resetting, reduces the manual intervention link, and significantly improves the production continuity. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0024] Figure 2 is an enlarged view of A in Figure 2

[0025] Figure 3 is a schematic diagram of the three-dimensional structure of the present application from another angle;

[0026] Figure 4 is a schematic diagram of the three-dimensional structure of the present application from still another angle;

[0027] Figure 5 is a partial sectional view of the side liquid storage frame in the present application;

[0028] Figure 6 is a partial sectional view of the circular control cylinder and the square control cylinder in the present application;

[0029] Figure 7 is an enlarged view of B in Figure 6

[0030] In the figure:

[0031] 1, processing platform; 11, abutting plate; 12, clamping plate; 13, hydraulic cylinder; 14, feeding plate; 15, cutting wheel; ​​

[0032] 2, cutting mechanism; 21, transverse guide rail; 22, first screw rod; 23, moving block; 24, U-shaped adjusting plate; 25, first motor; 26, second motor;

[0033] 3, mounting block; 31, second screw rod; 32, lifting block; 33, first limiting groove;

[0034] 4, detection mechanism; 41, pressing plate; 42, supporting block; 43, third screw rod; 44, transmission block; 45, second limiting groove; 46, third motor;

[0035] 5, first regulating mechanism; 51, resistance rod; 52, sliding sheet;

[0036] 6, second regulating mechanism; 61, elastic mounting rod; 62, groove; 63, sliding block; 64, reciprocating screw rod; 65, fourth motor; 66, reciprocating block; 67, conductive sheet; 68, conductive strip; 69, extension rod; 610, adjusting block; 611, first spring;

[0037] 7, control mechanism; 71, guide rod; 72, inclined guide plate; 73, guide wheel; 74, lateral liquid storage frame; 75, piston plate; 76, second spring; 77, vertical sliding groove; 78, circular control cylinder; 781, first piston block; 782, first push rod; 783, infusion tube; 79, square control cylinder; 791, liquid guide cavity; 792, second piston block; 793, second push rod; 794, three-way pipe. DETAILED DESCRIPTION

[0038] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0039] Example: Reference Figures 1 to 7 A steel plate cutting device facilitating adjustment of cutting angle, comprising:

[0040] The upper end of the machining platform 1 is fixedly connected with a stop plate 11, the side wall of the stop plate 11 is linearly slidably connected with two clamping plates 12, the upper end of the machining platform 1 is fixedly connected with two hydraulic cylinders 13, the output ends of the two hydraulic cylinders 13 are each fixedly connected with a feeding plate 14, and the feeding plate 14 is provided with a cutting wheel 15 on the side close to the two clamping plates 12.

[0041] Specifically, the lower end of the machining platform 1 is provided with a screw nut assembly, and the screw threads on the two sides of the screw rod in the screw nut assembly are in opposite directions, for driving the two nuts to move closer to or farther away from each other during rotation of the screw rod, realizing the mutual approach or mutual departure of the two clamping plates 12, thereby realizing the clamping work on the steel plate to be cut.

[0042] The cutting mechanism 2 is used for driving the cutting wheel 15 to linearly move to realize the cutting work on the steel plate, and the cutting mechanism 2 comprises a transverse guide rail 21 which is slidably connected to the side wall of the feeding plate 14 in the vertical direction, a first screw rod 22 which is rotatably connected in the transverse guide rail 21, a moving block 23 which is threadedly connected to the first screw rod 22, the moving block 23 being linearly slidably connected in the transverse guide rail 21, a U-shaped adjusting plate 24 which is rotatably connected to the end of the moving block 23 away from the transverse guide rail 21 through a rotating shaft, the cutting wheel 15 being rotatably connected between the two side walls of the U-shaped adjusting plate 24, a first motor 25 which is fixedly connected to the side wall of the moving block 23 and used for adjusting the angle of the U-shaped adjusting plate 24, a second motor 26 which is fixedly connected to the outer wall of the transverse guide rail 21 and used for driving the first screw rod 22, and a cutting motor which is fixedly connected to the lower end of the U-shaped adjusting plate 24 and used for driving the cutting wheel 15.

[0043] Specifically, the side wall of the feeding plate 14 away from the transverse guide rail 21 is fixedly connected with a mounting block 3, the lower end of the mounting block 3 is rotatably connected with a second screw rod 31, the second screw rod 31 is threadedly connected with a lifting block 32, the feeding plate 14 is provided with a first limiting groove 33, the lifting block 32 is fixedly connected with the side wall of the transverse guide rail 21 through the first limiting groove 33, when it is necessary to adjust the vertical height of the cutting wheel 15 to adapt to the cutting starting point of the steel plate with different thicknesses, the second screw rod 31 is driven to rotate, the lifting block 32 is vertically slid along the first limiting groove 33, and then the cutting wheel 15 is synchronously lifted through the transverse guide rail 21, so that the cutting wheel 15 always keeps a reasonable distance from the surface of the steel plate (the distance is slightly increased when the plate is thick to avoid initial overheating, and the distance is slightly reduced when the plate is thin to enhance energy concentration).

[0044] The two clamping plates 12 are provided with a detection mechanism 4 used for detecting the thickness of the steel plate, the detection mechanism 4 comprises a pressing plate 41 which is arranged between the two clamping plates 12, the two ends of the pressing plate 41 are telescopically arranged and the telescopic ends are fixedly connected with the two clamping plates 12 respectively, the pressing plate 41 is a nested telescopic plate, i.e. the inner plate and the outer plate are in sliding fit, the two clamping plates 12 are both fixedly connected with two support blocks 42 on the side walls away from each other, the two support blocks 42 on the same side are both rotatably connected with a third screw rod 43, the third screw rod 43 is threadedly connected with a transmission block 44, the clamping plate 12 is provided with a second limiting groove 45, the transmission block 44 is slidably connected to the inner wall of the second limiting groove 45 in the vertical direction, and the upper support block 42 on the same side is fixedly connected with a third motor 46 used for driving the third screw rod 43.

[0045] When the steel plate is placed on the processing platform 1 and clamped by the clamping plate 12, the third motor 46 drives the third screw rod 43 to rotate, drives the transmission block 44 to slide downward along the second limiting groove 45, and then drives the pressing plate 41 to descend and adhere to the upper surface of the steel plate; by detecting the sliding distance of the transmission block 44 (i.e. the distance between the pressing plate 41 and the processing platform 1), the thickness data of the steel plate can be accurately obtained, which provides basic parameters for subsequent angle adjustment and speed control.

[0046] The side wall of the abutting plate 11 is provided with a first control mechanism 5 for adjusting the cutting speed of the cutting wheel 15 and a second control mechanism 6 for adjusting the feeding speed of the cutting wheel 15.

[0047] The first control mechanism 5 includes two first supporting blocks fixedly connected to the side wall of the abutting plate 11, and a resistance rod 51 fixedly connected between the two first supporting blocks. A sliding piece 52 is slidably connected to the resistance rod 51, and the resistance rod 51 and the sliding piece 52 form a sliding rheostat electrically connected to the cutting motor.

[0048] When the sliding piece 52 slides along the resistance rod 51, the input resistance of the sliding rheostat changes, thereby changing the input current of the cutting motor: when cutting thick plates (thickness > 20 mm), the sliding piece 52 moves in the direction of reducing resistance, and the power of the cutting motor increases (the rotating speed increases) to enhance the cutting ability and avoid "half-cutting"; when cutting thin plates (thickness ≤ 6 mm), the sliding piece 52 moves in the direction of increasing resistance, and the power of the cutting motor decreases (the rotating speed slows down) to prevent the edge from "overheating" due to excessive energy.

[0049] The second control mechanism 6 includes an elastic mounting rod 61 arranged at the side of the abutting plate 11. Grooves 62 are formed in the two side walls of the elastic mounting rod 61. Sliding blocks 63 are arranged at the two sides of the elastic mounting rod 61 and embedded in the grooves 62. The two sliding blocks 63 move linearly towards or away from each other. Two second supporting blocks are fixedly connected to the position of the abutting plate 11 above the elastic mounting rod 61. A reciprocating screw rod 64 is rotatably connected between the two second supporting blocks. A fourth motor 65 is fixedly connected to the side wall of one of the second supporting blocks for driving the reciprocating screw rod 64. A reciprocating block 66 is threadedly connected to the reciprocating screw rod 64. The reciprocating block 66 is linearly slidably connected to the side wall of the abutting plate 11. A conductive piece 67 is fixedly connected to the lower end of the reciprocating block 66. A conductive strip 68 is fixedly connected to the upper end of the elastic mounting rod 61. The conductive piece 67 and the conductive strip 68 are connected in series with the second motor 26. Extension rods 69 are fixedly connected to the two ends of the elastic mounting rod 61. An adjusting block 610 is fixedly connected to the end of the extension rod 69 away from the elastic mounting rod 61. The adjusting block 610 is linearly slidably connected to the side wall of the abutting plate 11. Two symmetrically distributed stop blocks are fixedly connected to the abutting plate 11. A first spring 611 is arranged between the adjusting block 610 and the corresponding stop block.

[0050] Specifically, the elastic mounting rod 61 and the two end extension rods 69 are made of 50CrVA elastic alloy, and they both have a bending trend away from the reciprocating wire rod 64. The 50CrVA elastic alloy has high fatigue strength and is suitable for high-frequency stress scenarios, avoiding attenuation of the bending trend after long-term use, so that the elastic mounting rod 61 always has a bending trend away from the reciprocating wire rod 64. The elastic mounting rod 61 can be divided into a middle straight section and two curved sections by the two sliders 63, and the length of the middle straight section and the two curved sections is controlled by the position of the sliders 63, so as to adjust the length of the conductive strip 68 on the elastic mounting rod 61. When the length of the conductive strip 68 changes, the contact time of the conductive sheet 67 with the conductive strip 68 per unit time changes when the reciprocating wire rod 64 reciprocates, thereby adjusting the feeding distance of the cutting wheel 15 per unit time.

[0051] When the fourth motor 65 drives the reciprocating wire rod 64 to rotate, the reciprocating block 66 drives the conductive sheet 67 to reciprocate, and the second motor 26 is powered on when the conductive sheet 67 contacts the conductive strip 68 (driving the cutting wheel 15 to feed along the transverse guide rail 21), and is powered off when it is separated (pausing feeding). When cutting thick plates, the sliders 63 are in a state of approaching each other, the middle straight section of the elastic mounting rod 61 is relatively short, the effective contact length of the conductive strip 68 is relatively short, and the conductive sheet 67 is powered on for a relatively short time per unit time, so that the cutting wheel 15 feeding speed is reduced (to ensure that the heat is fully penetrated); when cutting thin plates, the thinner the thickness of the steel plate, the farther the two sliders 63 are from each other, so that the middle straight section of the elastic mounting rod 61 is relatively long, the effective contact length of the conductive strip 68 is increased, and the feeding speed is improved (to avoid heat accumulation leading to deformation).

[0052] The side wall of one of the clamping plates 12 is provided with a control mechanism 7 for automatically controlling the first regulating mechanism 5 and the second regulating mechanism 6 according to the thickness of the steel plate detected by the detection mechanism 4. The control mechanism 7 comprises a guide rod 71 slidingly connected to one of the transmission blocks 44, the side wall of the clamping plate 12 is fixedly connected with an inclined guide plate 72, the side wall of the guide rod 71 close to the inclined guide plate 72 is rotatably connected with a guide wheel 73, the guide wheel 73 is in rolling contact with the inclined guide plate 72, the side wall of the clamping plate 12 close to the guide rod 71 is fixedly connected with a lateral liquid storage frame 74, the inner wall of the lateral liquid storage frame 74 is sealingly slidingly connected with a piston plate 75, the second spring 76 is arranged between the piston plate 75 and the inner wall of the lateral liquid storage frame 74, the side of the piston plate 75 close to the guide rod 71 is provided with a vertical sliding slot 77, the guide rod 71 is slidingly connected to the vertical sliding slot 77 in the vertical direction, the side wall of the resisting plate 11 is fixedly connected with a circular control cylinder 78 and a square control cylinder 79, the circular control cylinder 78 is sealingly slidingly connected with a first piston block 781 in the inside, the first piston block 781 and the sliding sheet 52 are fixedly connected with a first push rod 782, one end of the circular control cylinder 78 away from the sliding sheet 52 is fixedly communicated with a liquid delivery pipe 783, the square control cylinder 79 is provided with two symmetrical guide liquid cavities 791 in the inside, the inner wall of the guide liquid cavities 791 is sealingly slidingly connected with a second piston block 792, the second piston block 792 and the corresponding sliding block 63 are fixedly connected with a second push rod 793, the lower end of the square control cylinder 79 is fixedly connected with a three-way pipe 794, the upper two ends of the three-way pipe 794 are respectively communicated with the interiors of the two guide liquid cavities 791, the other end of the three-way pipe 794 and the liquid delivery pipe 783 are both communicated with the interior of the lateral liquid storage frame 74.

[0053] Meanwhile, the liquid delivery pipe 783 and the three-way pipe 794 can be provided with an overflow valve or a synchronous valve for balancing pressure, so as to avoid the situation that the first piston block 781 and the second piston block 792 are out of synchronization, and prevent the situation that the cutting speed is improved but the feeding speed is not followed up (leading to local overheating) or the feeding is too fast but the cutting speed is insufficient (leading to discontinuous cutting).

[0054] When the detection mechanism 4 detects the thickness of the steel plate, the transmission block 44 slides along the second limiting groove 45, and the guide rod 71 is synchronously moved, the guide wheel 73 rolls along the inclined guide plate 72, and the piston plate 75 pushes the guide rod 71 to move laterally under the elastic force of the second spring 76, the guide rod 71 can move vertically along the vertical sliding groove 77, so that the movement interference is avoided, the hydraulic oil in the liquid guide cavity 791 of the circular control cylinder 78 and the square control cylinder 79 is drawn into the lateral liquid storage frame 74 through the liquid delivery pipe 783 and the three-way pipe 794, the first piston block 781 in the circular control cylinder 78 is driven to slide by the first push rod 782 under the hydraulic pressure, and the sliding sheet 52 is driven to slide, so that the automatic adjustment of the first adjusting mechanism 5 is realized; the second piston block 792 in the square control cylinder 79 is driven to move by the second push rod 793, and the automatic adjustment of the second adjusting mechanism 6 is realized, and at the same time, the first piston block 781 and the second piston block 792 are arranged between the inner wall of the circular control cylinder 78 and the inner wall of the corresponding position liquid guide cavity 791, and the force spring is arranged between the second piston block 792 and the inner wall of the corresponding position liquid guide cavity 791, so that the movement of the first piston block 781 and the second piston block 792 is always synchronously driven by the hydraulic pressure, so that the hydraulic oil only drives one of the first piston block 781 and the second piston block 792, and the synchronous driving of the first adjusting mechanism 5 and the second adjusting mechanism 6 is guaranteed.

[0055] At the same time, the first motor 25 of the cutting mechanism 2 drives the U-shaped adjusting plate 24 to rotate according to the thickness data of the detection mechanism 4: when the plate is thick, the U-shaped adjusting plate 24 is inclined to the outside by 1°-3° (the heat accumulation and slag discharge capacity of the bottom are enhanced), and when the plate is thin, the U-shaped adjusting plate 24 is inclined by 5°-15° (the heat input is dispersed to inhibit deformation), so that the automatic control of “thickness detection-angle adjustment-speed / power adaptation” is finally realized.

[0056] The function principle of the application can be described by the following operation mode:

[0057] 1. Steel plate positioning and clamping: the steel plate to be cut is placed on the machining platform 1, and the edge of the steel plate is attached to the resisting plate 11 to realize longitudinal positioning; the screw nut assembly at the lower end of the machining platform 1 is started, and when the screw rod rotates, the two side reverse threads drive the nuts to drive the two clamping plates 12 to move towards each other along the side wall of the resisting plate 11, until the two clamping plates 12 tightly clamp the two sides of the steel plate, so that the steel plate is not displaced during cutting. At the same time, the hydraulic cylinder 13 drives the feeding plate 14 to move towards the steel plate, so that the cutting wheel 15 approaches the edge of the steel plate to be cut, and the initial alignment before cutting is completed.

[0058] 2、Steel plate thickness detection and data acquisition: After clamping is completed, the detection mechanism 4 starts working, the third motor 46 drives the third lead screw 43 to rotate, driving the transmission block 44 to slide vertically downward along the second limiting groove 45, the transmission block 44 pushes the pressing plate 41 to descend synchronously until the lower surface of the pressing plate 41 is attached to the upper surface of the steel plate. By detecting the sliding distance of the transmission block 44 (i.e. the distance between the pressing plate 41 and the upper surface of the machining platform 1), the thickness data of the steel plate is accurately obtained, which is fed back to the control mechanism 7 through mechanical transmission, providing a core basis for subsequent parameter adjustment.

[0059] 3、Cutting parameter automatic adaptive adjustment:

[0060] The control mechanism 7 starts linkage adjustment according to the detected thickness data:

[0061] Cutting angle adjustment: After receiving the thickness signal (the height of the pressing plate 41 can be controlled by the working time of the third motor 46, when the third motor 46 drives the third lead screw 43 to rotate until the pressing plate 41 cannot descend, the third motor 46 transmits the working time to the external controller through electrical signal, further controlling the working of the first motor 25), the first motor 25 drives the U-shaped adjustment plate 24 to rotate around the rotating shaft on the moving block 23, realizing precise adjustment of the cutting wheel 15 angle - when the thickness of the steel plate is > 20mm (thick plate), the cutting wheel 15 is inclined outward by 1°-3°, enhancing the ability of heat accumulation and slag discharge at the bottom; when the thickness of the steel plate is ≤6mm (thin plate), the cutting wheel 15 is inclined by 5°-15°, dispersing heat input to suppress edge burning and deformation.

[0062] Cutting speed adjustment: When the transmission block 44 descends, it synchronously drives the guide rod 71 to move, the guide wheel 73 rolls along the inclined guide plate 72, pushing the piston plate 75 to pull the second spring 76 and draw the hydraulic oil in the circular control cylinder 78 into the lateral liquid storage frame 74 through the infusion tube 783, the first push rod 782 drives the sliding sheet 52 to slide along the resistance rod 51: when the thickness of the steel plate is thick, the sliding sheet moves in the direction of decreasing resistance, the cutting motor input current increases and the rotating speed increases (enhancing the cutting penetration); when the thickness of the steel plate is thin, the sliding sheet moves in the direction of increasing resistance, the rotating speed of the cutting motor decreases (avoiding excess energy).

[0063] The feeding speed adjustment: the hydraulic oil in the two liquid guide cavities 791 of the square control cylinder 79 is simultaneously drawn into the lateral liquid storage frame 74 through the three-way pipe 794, the second piston block 792 is pushed to move, and the second push rod 793 drives the sliding block 63 to slide along the groove 62 of the elastically mounted rod 61: when the thick plate, the sliding blocks 63 are close to each other, the middle straight section of the elastically mounted rod 61 is short, and the effective contact length of the conductive strip 68 is short; when the thin plate, the sliding blocks 63 are far away from each other, the middle straight section is lengthened, and the effective contact length of the conductive strip 68 is increased. Through the length change of the conductive strip 68, the unit time contact length of the conductive strip 67 (sliding with the reciprocating screw rod 64) and the conductive strip 68 is adjusted, and the change of the driving frequency of the second motor 26 is realized - the feeding speed is reduced when the thick plate (to ensure that the heat is fully penetrated), and the feeding speed is improved when the thin plate (to avoid heat accumulation).

[0064] 4. Cutting execution and dynamic stability control: after the parameter adjustment is completed, the cutting wheel 15 starts to work, the cutting motor drives the cutting wheel 15 to rotate at high speed, the second motor 26 drives the moving block 23 to move linearly along the transverse guide rail 21, and the transverse cutting feed of the cutting wheel 15 is realized. In the process, the second control mechanism 6 dynamically controls the on-off frequency of the second motor 26 through the cooperation of the reciprocating screw rod 64 and the conductive sheet 67, so that the feeding speed is matched with the thickness of the steel plate; if there is a local deviation in the thickness of the steel plate, the second screw rod 31 on the mounting block 3 can drive the lifting block 32 to slide along the first limiting groove 33, drive the transverse guide rail 21 and the cutting wheel 15 to move up and down synchronously, and adjust the distance between the cutting wheel 15 and the surface of the steel plate in real time, so that the energy distribution is stable during the whole cutting process.

[0065] 5. Cutting completion and reset: after cutting to the end of the steel plate, the cutting motor stops rotating, the second motor 26 drives the moving block 23 to move reversely and reset; the hydraulic cylinder 13 drives the feeding plate 14 to retreat to the initial position, the clamping plates 12 are driven away from each other by the screw nut assembly to loosen the steel plate, and the single cutting work is completed. The elastically mounted rod 61 and the extension rod 69 are reset under the bending tendency of the 50CrVA elastic alloy itself and the action of the first spring 611, the piston plate 75 of the control mechanism 7 is pushed back to the hydraulic oil under the elastic force of the second spring 76, and each control component returns to the initial state, waiting for the next cutting cycle.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel plate cutting device with easily adjustable cutting angle, characterized in that, include: A processing platform (1) is fixedly connected to the upper end of the processing platform (1). Two clamping plates (12) are linearly slidably connected to the side wall of the clamping plate (11). Two hydraulic cylinders (13) are fixedly connected to the upper end of the processing platform (1). A feed plate (14) is fixedly connected to the output end of each of the two hydraulic cylinders (13). A cutting wheel (15) is provided on the side of the feed plate (14) near the two clamping plates (12). A cutting mechanism (2) is used to drive the cutting wheel (15) to move linearly to cut the steel plate. The cutting mechanism (2) includes a transverse guide rail (21) that is slidably connected to the side wall of the feed plate (14) in the vertical direction. A first lead screw (22) is rotatably connected inside the transverse guide rail (21). A moving block (23) is threadedly connected to the first lead screw (22). The moving block (23) is linearly slidably connected inside the transverse guide rail (21). The moving block (23) is away from the transverse guide rail (21). One end of the U-shaped adjustment plate (24) is rotatably connected to the U-shaped adjustment plate (24) via a rotating shaft. The cutting wheel (15) is rotatably connected between the two side walls of the U-shaped adjustment plate (24). A first motor (25) for adjusting the angle of the U-shaped adjustment plate (24) is fixedly connected to the side wall of the moving block (23). A second motor (26) for driving the first lead screw (22) is fixedly connected to the outer wall of the transverse guide rail (21). A cutting motor for driving the cutting wheel (15) is fixedly connected to the lower end of the U-shaped adjustment plate (24).

2. The steel plate cutting device with easily adjustable cutting angle according to claim 1, characterized in that, An mounting block (3) is fixedly connected to the side wall of the feed plate (14) away from the transverse guide rail (21). A second lead screw (31) is rotatably connected to the lower end of the mounting block (3). A lifting block (32) is threaded onto the second lead screw (31). A first limiting groove (33) is provided on the feed plate (14). The lifting block (32) passes through the first limiting groove (33) and is fixedly connected to the side wall of the transverse guide rail (21).

3. The steel plate cutting device with easily adjustable cutting angle according to claim 1, characterized in that, A detection mechanism (4) for detecting the thickness of the steel plate is provided between the two clamping plates (12). The detection mechanism (4) includes a pressing plate (41) disposed between the two clamping plates (12). The two ends of the pressing plate (41) are telescopic and their telescopic ends are fixedly connected to the two clamping plates (12). Two support blocks (42) are fixedly connected to the side walls of the two clamping plates (12) that are far apart from each other. A third lead screw (43) is rotatably connected between the two support blocks (42) on the same side. A transmission block (44) is threadedly connected to the third lead screw (43). A second limiting groove (45) is opened on the clamping plate (12). The transmission block (44) is slidably connected to the inner wall of the second limiting groove (45) in the vertical direction. A third motor (46) for driving the third lead screw (43) is fixedly connected to the upper support block (42) on the same side.

4. The steel plate cutting device with easily adjustable cutting angle according to claim 3, characterized in that, The side wall of the backing plate (11) is provided with a first control mechanism (5) for adjusting the cutting speed of the cutting wheel (15) and a second control mechanism (6) for adjusting the feed speed of the cutting wheel (15).

5. The steel plate cutting device with easily adjustable cutting angle according to claim 4, characterized in that, The first control mechanism (5) includes two first support blocks fixedly connected to the side wall of the support plate (11), a resistance rod (51) fixedly connected between the two first support blocks, and a slider (52) slidably connected on the resistance rod (51). The resistance rod (51) and the slider (52) form a sliding rheostat electrically connected to the cutting motor.

6. The steel plate cutting device with easily adjustable cutting angle according to claim 5, characterized in that, The second control mechanism (6) includes an elastic mounting rod (61) disposed on the side of the abutment plate (11). Grooves (62) are provided on both sides of the elastic mounting rod (61). Slider blocks (63) that engage with the grooves (62) are provided on both sides of the elastic mounting rod (61). The two sliders (63) move linearly towards or away from each other. Two second support blocks are fixedly connected to the abutment plate (11) above the elastic mounting rod (61). A reciprocating screw (64) is rotatably connected between the two second support blocks. A fourth motor (65) for driving the reciprocating screw (64) is fixedly connected to the side wall of one of the second support blocks. A reciprocating block (66) is threaded onto the reciprocating screw (64). The reciprocating block (66) is linearly slidably connected to the side wall of the abutment plate (11). The lower end of the reciprocating block (66) is fixedly connected to a conductive sheet (67). The upper end of the elastic mounting rod (61) is fixedly connected to a conductive strip (68). The conductive sheet (67) and the conductive strip (68) are connected in series with the second motor (26). Both ends of the elastic mounting rod (61) are fixedly connected to an extension rod (69). The end of the extension rod (69) away from the elastic mounting rod (61) is fixedly connected to an adjusting block (610). The adjusting block (610) is linearly slidably connected to the side wall of the abutment plate (11). Two symmetrically distributed stops are fixedly connected to the abutment plate (11). A first spring (611) is provided between the adjusting block (610) and the corresponding stop.

7. The steel plate cutting device with adjustable cutting angle according to claim 6, characterized in that, The elastic mounting rod (61) and the two end extension rods (69) are made of 50CrVA elastic alloy and both tend to bend away from the reciprocating lead screw (64).

8. The steel plate cutting device with adjustable cutting angle according to claim 7, characterized in that, One of the clamping plates (12) has a control mechanism (7) on its side wall, which is used to automatically control the first control mechanism (5) and the second control mechanism (6) according to the steel plate thickness detected by the detection mechanism (4). The control mechanism (7) includes a guide rod (71) that is slidably connected to one of the transmission blocks (44). An inclined guide plate (72) is fixedly connected to the side wall of the clamping plate (12). A guide wheel (73) is rotatably connected to the side wall of the guide rod (71) near the inclined guide plate (72). The guide wheel (73) rolls in contact with the inclined guide plate (72). A lateral liquid storage frame (74) is fixedly connected to the side wall of the clamping plate (12) near the guide rod (71). A piston plate (75) is slidably connected to the inner wall of the lateral liquid storage frame (74), and a second spring (76) is provided between the piston plate (75) and the inner wall of the lateral liquid storage frame (74). A vertical groove (77) is opened on the side of the piston plate (75) near the guide rod (71). The guide rod (71) is slidably connected to the clamping plate (12) in the vertical direction. A vertical chute (77) is provided. A circular control cylinder (78) and a square control cylinder (79) are fixedly connected to the side wall of the abutment plate (11). A first piston block (781) is slidably connected inside the circular control cylinder (78). A first push rod (782) is fixedly connected between the first piston block (781) and the slide plate (52). An infusion tube (783) is fixedly connected to one end of the circular control cylinder (78) away from the slide plate (52). Two symmetrically distributed liquid guiding chambers are opened inside the square control cylinder (79). 791), the inner wall of the liquid guiding cavity (791) is sealed and slidably connected with a second piston block (792), and the second piston block (792) and the corresponding side slider (63) are both fixedly connected with a second push rod (793). The lower end of the square control cylinder (79) is fixedly connected with a three-way pipe (794). The two ends of the three-way pipe (794) are respectively connected to the inside of the two liquid guiding cavities (791). The other end of the three-way pipe (794) and the infusion pipe (783) are both connected to the inside of the side liquid storage frame (74).

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