Adjustable plate shearing machine based on steel door plate cutting

Abstract

The invention relates to the technical field of plate shearing machines, and discloses an adjustable plate shearing machine based on steel door plate cutting, which comprises a cutting table, and further comprises two supporting plates fixedly connected to the front side and the rear side of the bottom of the cutting table respectively, and a placing table is arranged on the cutting table and used for placing a steel plate to be cut; the box body is arranged on the left sides of the two supporting plates, and a fixing unit is arranged in the box body and used for fixing the steel plate placed on the placing table; wherein the fixing unit comprises a fixing mechanism arranged in the box body; and the cutting mechanism is connected with the fixing mechanism. The L-shaped push plate and the limiting baffle can be synchronously driven to move left and right by rotating the adjusting screw rods on the two sides, and stepless setting of the cutting length of a steel plate is achieved; in cooperation with the second rectangular hole in the side plate, the limiting baffle can automatically sink to avoid the cutter in the cutting process, the cutting path is not hindered, the limiting function can be continuously kept after resetting, and the remodeling efficiency and the size precision are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of shearing machines, in particular to an adjustable shearing machine based on cutting steel door panels. Background Art

[0002] Traditional shearing machines are mainly divided into two categories: mechanical and hydraulic. Mechanical shearing machines use a crank-connecting rod mechanism to drive the upper blade to complete shearing. They have a simple structure and fast speed, but the shearing force is not adjustable, the blade gap is fixed, and the adaptability to steel plates of different thicknesses is poor, which is prone to burrs and dimensional errors. Hydraulic shearing machines use hydraulic cylinders to directly drive the upper blade. The shearing force is large and adjustable, which can improve the incision quality to a certain extent, but still have the following common defects:

[0003] Length positioning relies on manual marking or backstops, resulting in low adjustment accuracy and a high time consumption. Backstops often use a screw-handwheel structure, making it difficult to achieve simultaneous fine-tuning on both sides, and long plates are prone to diagonal errors. When specifications are frequently changed, operators need to repeatedly enter the danger zone for measurement and tightening, which is labor-intensive and poses a safety hazard. Furthermore, pressing and shearing are performed in separate steps, resulting in poor synchronization. Existing pressing mechanisms are mostly independent cylinders or spring pressers, with no mechanical linkage to the shearing action. This results in uneven clamping force, plate slippage, and "collapsed corners" or "fishtail" defects in the cut. Furthermore, the presser foot has a fixed height and cannot adapt to different plate thicknesses. Thin plates are prone to indentation, while thick plates are prone to loosening. Therefore, an adjustable shearing machine based on steel door plate cutting is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an adjustable shearing machine for cutting steel door panels in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an adjustable shearing machine based on cutting steel door panels, including a cutting table and also including:

[0006] Two support plates are fixedly connected to the front and rear sides of the bottom of the cutting table respectively. The cutting table is provided with a placement table for placing steel plates to be cut;

[0007] The box body is arranged on the left side of the two support plates, and a fixing unit is provided inside the box body for fixing the steel plate placed on the placement table;

[0008] Wherein, the fixing unit includes:

[0009] A fixing mechanism is arranged in the box;

[0010] The cutting mechanism is connected to the fixing mechanism and slides up and down in the box;

[0011] A pressing mechanism, disposed inside the box, for pressing the cutting waste;

[0012] The movable mechanism is arranged inside the box body, connected to the cutting mechanism and the pressing mechanism, and is used to push the cutting mechanism and the pressing mechanism to move up and down;

[0013] A limiting mechanism is provided inside the box body and is used to adjust the cutting position of the steel plate;

[0014] The cutter assembly is arranged on the top left side of the cutting table and cuts the steel plate when the cutting mechanism moves downward;

[0015] The cutter assembly comprises:

[0016] Two fixed blocks are fixedly connected to the top of the cutting table at equal intervals and are located on the left side of the placement table;

[0017] The lower cutter is installed on the top of the two fixed blocks and is connected to the two fixed blocks through a plurality of screws arranged at equal intervals.

[0018] Preferably, the box includes:

[0019] A bottom plate is fixedly connected to the left sides of the two support plates, and the front and rear sides of the top of the bottom plate are respectively fixedly connected to the side plates, and the top of the two side plates is fixedly connected to the top plate;

[0020] The right sides of the two side panels are provided with arc-shaped cutouts, and the right sides of the two side panels are fixedly connected with L-shaped side panels, and the top of the bottom panel is fixedly connected with a discharge ramp for sliding off the cut waste;

[0021] The cutting mechanism comprises:

[0022] Two rectangular slide rails are fixedly connected to the inner side walls of the two side panels and are symmetrically arranged front to back;

[0023] The rectangular movable block has sliding sleeves fixedly connected to the front and rear sides respectively, and slides up and down on the outer walls of the rectangular slide rails and side panels through the sliding sleeves;

[0024] An inclined plate fixedly connected to the bottom of the rectangular movable block;

[0025] an upper cutter fixedly connected to the right side of the outer wall of the inclined plate and mounted on the outer wall of the inclined plate via a plurality of threaded rods arranged at equal intervals;

[0026] The push plate is fixedly connected to the right side of the rectangular movable block.

[0027] Preferably, the movable mechanism includes:

[0028] Two fixed columns are fixedly connected to the front and rear sides of the bottom of the top plate, and the outer surface of each fixed column is slidably connected to a plurality of rectangular sliders;

[0029] A plurality of swing arms are rotatably connected to the outer wall of the uppermost rectangular slider from the top, and the outer walls of the lowermost rectangular slider from the bottom are respectively fixedly connected to push rods, and a connecting rod 1 is hinged between the push rods and the swing arms;

[0030] Two rectangular fixed columns are respectively fixedly connected to the bottom of the top plate and located on the left side of the fixed column, and the outer wall of each rectangular fixed column is hinged with a plurality of connecting rods 2 at equal intervals, and the other end of the connecting rods 2 is respectively hinged to the end of the swing arm away from the connecting rod 1;

[0031] Two synchronous push rods are fixedly connected between the uppermost rectangular slider and the rectangular movable block, and are used to synchronously push the rectangular movable block up and down;

[0032] Two pry bars are movably connected to rectangular holes formed on the rectangular fixing columns, and the right side of each rectangular fixing column is fixedly connected to two hinged seats located on both sides of the rectangular hole, and the pry bars are hinged on the hinged seats;

[0033] A U-shaped rod is fixedly connected to the top of the uppermost rectangular slider and is located on the left side of the fixed column, and a U-shaped sleeve is provided on the right side of the pry bar and is rotatably connected to the outer wall of the U-shaped rod through the U-shaped sleeve;

[0034] A synchronization rod, the outer wall of which is fixedly connected to the left side of the two pry bars, and the outer wall of the synchronization rod is hinged with a hinge rod;

[0035] The hydraulic cylinder is fixedly connected to the top of the top plate, and the telescopic end of the hydraulic cylinder movably passes through the top plate and is hinged to the end of the hinge rod away from the synchronization rod.

[0036] Preferably, the limiting mechanism includes:

[0037] A fixed plate, fixedly connected between the front and rear side plates;

[0038] The U-shaped block has two T-shaped slide bars fixedly connected to the top, and the outer wall of the T-shaped slide bar is provided with a tension spring for pulling the T-shaped slide bar upward and driving the U-shaped block to move upward, and the bottom of the inclined plate is in contact with the top of the U-shaped block;

[0039] The limit baffle is movably connected to the inner wall of the U-shaped block to control the cutting length of the steel plate;

[0040] Two connecting plates are fixedly connected to the front and back of the U-shaped block respectively; and the front and back of the U-shaped block are respectively provided with a rectangular sliding hole 1;

[0041] Two L-shaped push plates are respectively fixedly connected to the left side of the limit baffle and slidably connected to the inner wall of the rectangular sliding hole 1. The right side of the connecting plate is rotatably connected to an adjusting screw, and the L-shaped push plate is threadedly connected to the outer wall of the adjusting screw to drive the L-shaped push plate to move left and right;

[0042] A second rectangular hole is respectively opened on the two side plates, and the connecting plate, the adjusting screw and the L-shaped push plate all move up and down in the second rectangular hole.

[0043] Preferably, an arc-shaped grinding plate is provided on the right side of the rectangular movable block for grinding the cut edge of the steel plate, and a plurality of sliding rods arranged at equal intervals are fixedly connected to the left side of the arc-shaped grinding plate, and the left side of the sliding rod is movable through the rectangular movable block, and the outer wall of each sliding rod is respectively provided with two tension springs, and the outer wall of the sliding rod is threadedly connected with a bolt for fixing the sliding rod.

[0044] Preferably, the pressing mechanism includes:

[0045] A rectangular block is slidably connected between the side plates, and the front and rear sides of the top of the rectangular block are respectively fixedly connected to sliding sleeves, the sliding sleeves are slidably connected to the outer wall of the fixed column, and the top of the sliding sleeves is fixedly connected to the bottom rectangular slider;

[0046] an L-shaped pressing plate, disposed on the outer wall of the rectangular block, with the right side of the L-shaped pressing plate in contact with one side of the unloading ramp;

[0047] Multiple sliding columns are fixedly connected to the inner wall of the L-shaped pressure plate and movably connected to the bottom slide groove of the rectangular block. The outer wall of each sliding column is respectively sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the L-shaped pressure plate and the rectangular block, for pushing the L-shaped pressure plate downward.

[0048] Preferably, the fixing mechanism includes:

[0049] A pressing plate, provided below the L-shaped side plate, for pressing the steel plate;

[0050] A plurality of telescopic rods are arranged at equal intervals and movably connected to the L-shaped side panels, and the tops of the telescopic rods are fixedly connected to the contact plates, and the tops of the contact plates are in contact with the bottoms of the push plates;

[0051] The outer walls of the telescopic rod are respectively provided with spring 2 and spring 3, and are respectively located on the inner and outer sides of the L-shaped side plate. The two ends of the spring 2 are respectively connected to the contact plate and the L-shaped side plate, and the two ends of the spring 3 are respectively connected to the pressure plate and the L-shaped side plate.

[0052] Preferably, the fixing mechanism further comprises:

[0053] A synchronous pressing plate is fixedly connected to the right side of the pressing plate, and the four corners of the bottom of the synchronous pressing plate are fixedly connected to movable rods, and the bottom of the movable rod is fixedly connected to an H-shaped push plate, and the H-shaped push plate slides in a sliding groove provided on the inner wall of the support plate;

[0054] The placing table and the cutting table are provided with a plurality of through holes arranged at equal intervals, and a rectangular push block is movably connected in each through hole, and the bottom of the rectangular push block is connected to the top of the H-shaped push plate;

[0055] A mounting groove is provided at the bottom of the synchronous pressure plate, and the mounting groove is movably connected to a rectangular movable frame, a plurality of circular rods are fixedly connected to the top of the inner wall of the mounting groove, and the rectangular movable frame slides on the outer wall of the circular rod, and a spring four is provided on the outer wall of each circular rod, and the two ends of the spring four are connected to the rectangular movable frame and the top of the mounting groove of the synchronous pressure plate, for pushing the rectangular movable frame downward;

[0056] A plurality of rollers are rotatably connected to the inner wall of the rectangular movable frame and are arranged axially in the front and rear directions for rolling against the upper surface of the steel plate.

[0057] Preferably, two rectangular grooves are provided at the bottom of the pressing plate, and a cleaning mechanism is provided in the right rectangular groove for cleaning the steel plate, and the cleaning mechanism includes:

[0058] A rectangular frame is movably connected to the inner wall of the rectangular groove on the right side, and a brush plate is fixedly connected to the bottom of the rectangular frame for cleaning the steel plate;

[0059] Multiple adjusting rods are fixedly connected to the four corners of the top of the brush plate, and the outer walls of the adjusting rods are movably connected upward to the circular groove opened at the top of the rectangular groove on the right side of the pressure plate. The outer wall of each adjusting rod is respectively provided with a spring five, and the two ends of the spring five are respectively connected to the pressure plate and the brush plate, for pushing the brush plate downward and fitting it to the surface of the steel plate.

[0060] Preferably, a rectangular through hole is formed on the brush plate, and two mounting blocks are fixedly connected to the inner wall of the rectangular frame and are located at the front and rear sides of the rectangular through hole, a rubber roller is rotatably connected between the two mounting blocks, and the outer wall of the rubber roller is in contact with the steel plate;

[0061] A plurality of limiting slide bars are fixedly connected to the right side of the inner wall of the rectangular frame, and are arranged in groups of two, and the outer walls of each two limiting slide bars are slidably connected to a U-shaped push block;

[0062] A through hole is opened on the left side of the pressure plate and is connected to the left rectangular groove, and a push block is movably connected in the left rectangular groove, and the right side of the push block is fixedly connected to the U-shaped push block;

[0063] The pressure plate is provided with a plurality of rectangular movable holes 1 arranged at equal intervals and connected to the left and right rectangular grooves. The rectangular frame is provided with a plurality of rectangular movable holes 2 corresponding to the rectangular movable holes 1. The U-shaped push block is located in the rectangular movable holes 2 and moves left and right, and the U-shaped push block is located on the left and right of the rectangular movable hole 1 and moves up and down.

[0064] The outer wall of the rubber roller is respectively provided with annular tooth grooves arranged at intervals on the front and rear sides, and the bottom of the U-shaped push block is provided with a tooth groove, and the annular tooth groove is engaged with the tooth groove. The outer wall of the limiting slide rod is provided with a tension spring three for pulling the U-shaped push block to reset.

[0065] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0066] 1. This adjustable shearing machine, which is used for cutting steel door panels, can synchronously drive the L-shaped push plate and the limit baffle to move left and right by rotating the adjusting screws on both sides, thereby realizing stepless setting of the steel plate cutting length; in conjunction with the second rectangular hole on the side panel, the limit baffle can automatically sink to avoid the tool during the cutting process, which neither hinders the cutting path nor maintains the limit function after resetting, significantly improving the changeover efficiency and dimensional accuracy.

[0067] 2. This adjustable shearing machine, which is based on cutting steel door panels, can complete the elastic pressing of the pressure plate and the synchronous pressure plate on the steel plate through one downward movement of the rectangular movable block to prevent slippage; the upper cutter and the lower cutter are closed to complete the shearing; the arc-shaped grinding plate always fits the cross-section of the steel plate under the action of the second tension spring, and can remove burrs synchronously by reciprocating up and down once, reducing the subsequent deburring process, reducing the labor intensity and scratch risk of workers, and at the same time, a double spring structure of spring two + spring three is adopted between the pressure plate and the telescopic rod. The pressing force is automatically adjusted with the thickness of the plate, which can press thin plates firmly without damaging thick plates.

[0068] 3. This adjustable shearing machine, which is used for cutting steel door panels, slides the cut waste onto the bottom plate via a discharging ramp. The movable mechanism drives the rectangular block and L-shaped pressing plate downward through a multi-stage swing arm and a sliding sleeve, compacting the waste in real time. The spring enables the L-shaped pressing plate to adapt to the height of the waste. After compression, the volume of the waste is reduced, avoiding accumulation and blockage, and reducing the frequency of shutdown for cleaning.

[0069] 4. This adjustable shearing machine is based on cutting steel door panels. When the pressure plate is reset, the brush plate and rubber roller in the cleaning mechanism are automatically pressed down to the surface of the steel plate under the action of spring 5; the movement of the steel plate drives the rubber roller to rotate, and the engagement of the annular tooth groove with the U-shaped push block causes the push block to swing back and forth. The brushing and wiping work together to remove oxide scale and loose rust, reduce blade chipping, and increase tool life.

[0070] 5. The adjustable plate shearing machine based on steel door plate cutting is provided with a rectangular push block below the placing table, which can lift the push block when the pressing plate is lifted, so as to eliminate the negative pressure adsorption of the steel plate and the table surface; the roller is always elastically pressed to hold the steel plate under the action of the spring, which not only ensures smooth movement but also avoids lateral movement, so that the long plate can also be easily pushed to the limiting baffle by one person, and the operation strength is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0071] Figure 1 It is a structural schematic diagram of the present application;

[0072] Figure 2 It is a structural schematic diagram of the back of the present application;

[0073] Figure 3 It is a structural schematic diagram of the front of the present application;

[0074] Figure 4 It is a structural schematic diagram of the movable mechanism of the present application;

[0075] Figure 5 It is a structural schematic diagram of the present application Figure 4 It is a structural schematic diagram of the present application

[0076] Figure 6 It is a structural schematic diagram of the cutting mechanism of the present application;

[0077] Figure 7 It is a structural schematic diagram of the present application Figure 6 It is a structural schematic diagram of the present application

[0078] Figure 8 It is a structural schematic diagram of the fixed mechanism of the present application;

[0079] Figure 9 It is a structural schematic diagram of the present application Figure 8 It is a structural schematic diagram of the present application

[0080] Figure 10 It is a structural schematic diagram of the pressing plate of the present application;

[0081] Figure 11 It is a structural schematic diagram of the present application Figure 10 It is a structural schematic diagram of the present application.

[0082] In the figure: 1, support plate; 2, cutting table; 3, placing table; 4, cutter assembly; 41, fixed block; 42, lower cutter; 43, screw rod; 5, fixing unit; 51, fixing mechanism; 511, pressing plate; 512, abutting plate; 513, spring two; 514, spring three; 515, telescopic rod; 516, synchronous pressing plate; 517, movable rod; 518, H-shaped push plate; 519, rectangular push block; 5110, rectangular movable frame; 5111, roller; 5112, circular rod; 5113, spring four; 52, cutting mechanism; 521, rectangular movable block; 522, rectangular slide rail; 523, sliding sleeve; 524, inclined plate; 525, upper cutter; 526, push plate; 53, movable mechanism; 531, fixed column; 532, rectangular slide block; 533, swing arm; 534, push rod; 535, connecting rod one; 536, connecting rod two; 537, rectangular fixed column; 538, U-shaped rod; 539, crowbar; 5310, hinged seat; 5311, synchronous rod; 5312, hinged rod; 5313, hydraulic cylinder; 5314, synchronous push rod; 54, pressing mechanism; 541, rectangular block; 542, sliding sleeve; 543, L-shaped pressing plate; 544, sliding column; 545, spring one; 55, limiting mechanism; 551, fixed plate; 552, T-shaped slide rod; 553, pull spring one; 554, limiting baffle; 555, connecting plate; 556, adjusting screw rod; 557, L-shaped push plate; 558, slide rod; 559, pull spring two; 5510, bolt; 5511, arc polishing plate; 5512, U-shaped block; 6, box body; 61, bottom plate; 62, side plate; 63, top plate; 64, L-shaped side plate; 65, unloading inclined table; 7, cleaning mechanism; 71, rectangular frame; 72, brush plate; 73, adjusting rod; 74, spring five; 75, mounting block; 76, rubber roller; 77, annular tooth groove; 78, U-shaped push block; 79, limiting slide rod; 710, pull spring three; 711, push block; 712, rectangular movable hole one; 713, rectangular movable hole two. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0084] Please refer to Figure 1-11 An embodiment of the present application is: a steel door plate material cutting based adjustable plate shearing machine, comprising a cutting table 2, further comprising:

[0085] Two support plates 1 are respectively fixedly connected to the front and rear sides of the bottom of the cutting table 2, and the cutting table 2 is provided with a placing table 3 for placing steel plates to be cut.

[0086] The box body 6 is provided on the left side of the two support plates 1, and a fixing unit 5 is provided inside the box body 6 for fixing the steel plate placed on the placement table 3;

[0087] Wherein, the fixing unit 5 includes:

[0088] The fixing mechanism 51 is disposed in the box body 6; the cutting mechanism 52 is connected to the fixing mechanism 51 and slides up and down in the box body 6;

[0089] A pressing mechanism 54 is provided inside the box 6 and is used for pressing the cutting waste;

[0090] The movable mechanism 53 is provided inside the box body 6 and is connected to the cutting mechanism 52 and the pressing mechanism 54, respectively, and is used to push the cutting mechanism 52 and the pressing mechanism 54 to move up and down;

[0091] The limiting mechanism 55 is provided inside the box 6 and is used to adjust the cutting position of the steel plate;

[0092] The cutter assembly 4 is arranged on the top left side of the cutting table 2 and cuts the steel plate when the cutting mechanism 52 moves downward;

[0093] The cutter assembly 4 comprises:

[0094] Two fixed blocks 41 are fixedly connected to the top of the cutting table 2 at equal intervals and are located on the left side of the placement table 3; the lower cutter 42 is installed on the top of the two fixed blocks 41 and is connected to the two fixed blocks 41 through a plurality of screws 43 arranged at equal intervals.

[0095] The box 6 includes:

[0096] The bottom plate 61 is fixedly connected to the left side of the two support plates 1, and the front and rear sides of the top of the bottom plate 61 are fixedly connected to the side plates 62 respectively, and the top of the two side plates 62 is fixedly connected to the top plate 63;

[0097] The right sides of the two side panels 62 are provided with arc-shaped cutouts, and the right sides of the two side panels 62 are fixedly connected with L-shaped side panels 64. The top of the bottom panel 61 is fixedly connected with a discharge ramp 65 for sliding off the cut waste.

[0098] The cutting mechanism 52 includes two rectangular slide rails 522, which are respectively fixedly connected to the inner side walls of the two side plates 62 and are symmetrically arranged front to back;

[0099] The rectangular movable block 521 has sliding sleeves 523 fixedly connected to its front and rear sides respectively, and slides up and down on the rectangular slide rails 522 and the outer wall of the side plate 62 through the sliding sleeves 523;

[0100] Inclined plate 524, fixedly connected to the bottom of the rectangular movable block 521;

[0101] The upper cutter 525 is fixedly connected to the right side of the outer wall of the inclined plate 524 and is installed on the outer wall of the inclined plate 524 through a plurality of threaded rods arranged at equal intervals; the push plate 526 is fixedly connected to the right side of the rectangular movable block 521.

[0102] The movable mechanism 53 includes two fixed columns 531, which are fixedly connected to the front and rear sides of the bottom of the top plate 63, and a plurality of rectangular sliders 532 are slidably connected to the outer surface of each fixed column 531;

[0103] Multiple swing arms 533 are rotatably connected to the outer wall of the uppermost rectangular slider 532, and the outer walls of the next rectangular slider 532 from the bottom to the top are respectively fixedly connected to push rods 534, and a connecting rod 535 is hinged between the push rods 534 and the swing arms 533;

[0104] Two rectangular fixing columns 537 are fixedly connected to the bottom of the top plate 63 and are located on the left side of the fixing column 531. The outer wall of each rectangular fixing column 537 is hinged with multiple connecting rods 536 at equal intervals. The other end of the connecting rods 536 is hinged to the end of the swing arm 533 away from the connecting rod 535.

[0105] Two synchronous push rods 5314 are respectively fixedly connected between the uppermost rectangular slider 532 and the rectangular movable block 521, and are used to synchronously push the rectangular movable block 521 up and down;

[0106] Two pry bars 539 are movably connected to rectangular holes formed in the rectangular fixing columns 537. The right side of each rectangular fixing column 537 is fixedly connected to two hinged seats 5310 located on both sides of the rectangular hole. The pry bars 539 are hinged to the hinged seats 5310.

[0107] A U-shaped rod 538 is fixedly connected to the top of the uppermost rectangular slider 532 and is located on the left side of the fixed column 531. A U-shaped sleeve is provided on the right side of the pry bar 539 and is rotatably connected to the outer wall of the U-shaped rod 538 through the U-shaped sleeve.

[0108] The outer wall of the synchronization rod 5311 is fixedly connected to the left side of the two pry bars 539, and the outer wall of the synchronization rod 5311 is hinged with a hinge rod 5312;

[0109] The hydraulic cylinder 5313 is fixedly connected to the top of the top plate 63 , and the telescopic end of the hydraulic cylinder 5313 movably passes through the top plate 63 and is hinged to the end of the hinge rod 5312 away from the synchronization rod 5311 .

[0110] The limiting mechanism 55 includes: a fixed plate 551, fixedly connected between the front and rear side plates 62;

[0111] The top of the U-shaped block 5512 is fixedly connected to two T-shaped slide bars 552, and the outer wall of the T-shaped slide bar 552 is provided with a tension spring 553 for pulling the T-shaped slide bar 552 upward and driving the U-shaped block 5512 to move upward, and the bottom of the inclined plate 524 is in contact with the top of the U-shaped block 5512;

[0112] The limiting baffle 554 is movably connected to the inner wall of the U-shaped block 5512 and is used to control the cutting length of the steel plate;

[0113] Two connecting plates 555 are fixedly connected to the front and back of the U-shaped block 5512 respectively;

[0114] The front and back of the U-shaped block 5512 are respectively provided with a rectangular sliding hole 1;

[0115] Two L-shaped push plates 557 are fixedly connected to the left side of the limit stopper 554 and are slidably connected to the inner wall of the rectangular sliding hole 1. The right side of the connecting plate 555 is rotatably connected to the adjusting screw 556, and the L-shaped push plate 557 is threadedly connected to the outer wall of the adjusting screw 556 to drive the L-shaped push plate 557 to move left and right;

[0116] A second rectangular hole is respectively formed on the two side plates 62 , and the connecting plate 555 , the adjusting screw 556 and the L-shaped push plate 557 all move up and down in the second rectangular hole.

[0117] An arc-shaped grinding plate 5511 is provided on the right side of the rectangular movable block 521 for grinding the cut edge of the steel plate, and a plurality of equally spaced sliding rods 558 are fixedly connected to the left side of the arc-shaped grinding plate 5511, and the left side of the sliding rod 558 is movable through the rectangular movable block 521, and the outer wall of each sliding rod 558 is respectively provided with a tension spring 559, and the outer wall of the sliding rod 558 is threadedly connected with a bolt 5510 for fixing the sliding rod 558.

[0118] Working principle: Place the steel plate to be cut flat on the placement table 3, use the adjustment wrench to synchronously rotate the two adjustment screws 556, thereby pushing the L-shaped push plate 557 to move left and right, thereby adjusting the limit baffle 554 to move left and right, so that the distance between the limit baffle 554 and the lower cutter 42 can be adjusted, so as to quickly set the required cutting length;

[0119] By pushing the steel plate against the outer wall of the limit baffle 554 and controlling the hydraulic cylinder 5313 to work through the external control device, its telescopic end will move upward, thereby pulling the hinge rod 5312 upward, and at this time, the synchronization rod 5311 will be pulled upward. Moreover, when the synchronization rod 5311 moves upward, it will pull the pry bar 539 upward to deflect around the hinge seat 5310, thereby pushing the U-shaped rod 538 on the inner wall of the U-shaped sleeve downward in the opposite direction, and then pushing the synchronization push rod 5314 downward. At this time, the rectangular movable block 521 will be driven to move downward on the outer wall of the rectangular slide rail 522 through the sliding sleeve 523. At this time, the push plate 526 and the inclined plate 524 will be pushed downward at the same time. When the push plate 526 moves downward and pushes the contact plate 512 to move downward, the spring 2 513 will be compressed first and the telescopic rod 515 will be driven downward, thereby pushing the pressing plate 511 downward and fitting it to the top of the steel plate, thereby clamping and fixing the steel plate to limit the movement of the steel plate during cutting.

[0120] When the rectangular movable block 521 moves downward and continues to drive the push plate 526 to move downward, the spring three 514 is compressed and the telescopic rod 515 is contracted to adapt to the displacement of the push plate 526 to continue to move downward, and the pressure plate 511 is always kept clamping the steel plate to adapt to the purpose of clamping steel plates of different thicknesses. At the same time, in the process of the rectangular movable block 521 continuing to move downward, the upper cutting knife 525 is driven to move downward and contact the steel plate, and at the same time cooperates with the lower cutting knife 42 to cut the steel plate. In the process of moving downward, the tension spring two 559 pulls the bolt 5510 and the sliding rod 558 to move, and pushes the arc grinding plate 5511 to move to the right and fit the outer wall of the steel plate. In the process of the rectangular movable block 521 moving up and down, the arc grinding plate 5511 contacts the steel plate to achieve synchronous grinding of the cut surface of the steel plate, so as to avoid the burrs of the cut steel plate affecting the workers' picking up.

[0121] Furthermore, when the limit baffle 554 is located below the inclined plate 524, it affects the cutting path. At this time, when the rectangular movable block 521 moves downward, it will contact the top of the U-shaped block 5512 through the bottom of the inclined plate 524, and then push the U-shaped block 5512 to move downward, and move it downward on the fixed plate 551 through the T-shaped slide bar 552, and when the entire connecting plate 555, the adjusting screw 556 and the L-shaped push plate 557 are adaptively moved up and down in the rectangular hole 2, so as to achieve limit resistance when cutting steel plates at different positions.

[0122] When the hydraulic cylinder 5313 is in the non-working state, it will drive the pry bar 539 to deflect upward on the right side, thereby driving the rectangular slide block 532 to return to its original position. At this time, the rectangular movable block 521 is driven upward by the synchronous push rod 5314, and the push plate 526 is driven upward, and no pressure is applied to the contact plate 512. At this time, the deformation of the second spring 513 is greater than the deformation of the third spring 514, which will push the contact plate 512 to move upward, thereby driving the telescopic rod 515 to move upward, and the telescopic end of the telescopic rod 515 will cooperate with the upward telescopic rod 515 under the action of the spring third 514 to synchronously drive the pressure plate 511 to move upward, and no pressure is applied to the steel plate. When the inclined plate 524 follows the rectangular movable block 521 to move upward, it no longer squeezes the limit baffle 554. At this time, the tension spring 1 553 resets the T-shaped slide bar 552 and the U-shaped block 5512 upward, and causes the limit baffle 554 to return upward to the same level as the steel plate.

[0123] See also Figure 1-11 Based on the above embodiment, in another embodiment of the present invention, the pressing mechanism 54 includes:

[0124] The rectangular block 541 is slidably connected between the side plates 62. Sliding sleeves 542 are fixedly connected to the front and rear sides of the top of the rectangular block 541. The sliding sleeves 542 are slidably connected to the outer wall of the fixed column 531. The top of the sliding sleeve 542 is fixedly connected to the bottom rectangular slider 532.

[0125] An L-shaped pressing plate 543 is provided on the outer wall of the rectangular block 541 , and the right side of the L-shaped pressing plate 543 contacts one side of the unloading ramp 65 ;

[0126] Multiple sliding columns 544 are fixedly connected to the inner wall of the L-shaped pressure plate 543 and movably connected to the bottom slide groove of the rectangular block 541. The outer wall of each sliding column 544 is respectively sleeved with a spring 545, and the two ends of the spring 545 are respectively fixedly connected to the L-shaped pressure plate 543 and the rectangular block 541, for pushing the L-shaped pressure plate 543 downward.

[0127] The fixing mechanism 51 includes: a pressing plate 511, which is arranged below the L-shaped side plate 64 and is used to press the steel plate;

[0128] Multiple telescopic rods 515 are arranged at equal intervals and movably connected to the L-shaped side plate 64, and the top of the telescopic rod 515 is fixedly connected to the contact plate 512, and the top of the contact plate 512 contacts the bottom of the push plate 526;

[0129] The outer walls of the telescopic rod 515 are respectively provided with spring 2 513 and spring 3 514, and are respectively located on the inner and outer sides of the L-shaped side plate 64. The two ends of spring 2 513 are respectively connected to the contact plate 512 and the L-shaped side plate 64, and the two ends of spring 3 514 are respectively connected to the pressure plate 511 and the L-shaped side plate 64.

[0130] The fixing mechanism 51 further includes: a synchronous pressing plate 516, fixedly connected to the right side of the pressing plate 511, and the four corners of the bottom of the synchronous pressing plate 516 are fixedly connected to movable rods 517, and the bottom of the movable rod 517 is fixedly connected to an H-shaped push plate 518, and the H-shaped push plate 518 slides in a sliding groove provided on the inner wall of the support plate 1;

[0131] The placement table 3 and the cutting table 2 are provided with a plurality of through holes at equal intervals, and a rectangular push block 519 is movably connected in each through hole, and the bottom of the rectangular push block 519 is connected to the top of the H-shaped push plate 518;

[0132] The bottom of the synchronous pressure plate 516 is provided with a mounting slot, which is movably connected to a rectangular movable frame 5110. A plurality of circular rods 5112 are fixedly connected to the top of the inner wall of the mounting slot, and the rectangular movable frame 5110 slides on the outer wall of the circular rods 5112. The outer wall of each circular rod 5112 is sheathed with a fourth spring 5113. The ends of the fourth spring 5113 are connected to the rectangular movable frame 5110 and the top of the mounting slot of the synchronous pressure plate 516, and are used to push the rectangular movable frame 5110 downward.

[0133] A plurality of rollers 5111 are rotatably connected to the inner wall of the rectangular movable frame 5110 and are arranged axially in the front-back direction for rolling against the upper surface of the steel plate.

[0134] Working principle: First, when the pressing plate 511 moves upward, it will synchronously drive the synchronous pressing plate 516 to move upward. At this time, the roller 5111 located in the synchronous pressing plate 516 will be pushed downward by the spring 4 5113 to push the rectangular movable frame 5110, thereby pushing the roller 5111 to always fit the upper surface of the steel plate, so that the steel plate can still be limited when adjusting the steel plate to prevent the steel plate from deflecting. At the same time, after the synchronous pressing plate 516 moves upward, it will drive the movable rod 517 to move upward, and at this time synchronously drive the H-shaped push plate 518 to move upward, and drive multiple rectangular push blocks 519 upward, and push the steel plate upward to leave the surface of the placement table 3, so as to avoid the steel plate being adsorbed on the surface of the placement table 3, making it difficult to move the steel plate;

[0135] Furthermore, when the movable steel plate hits the limit stopper 554, the pressing plate 511 moves downward, which will drive the synchronous pressing plate 516 to move downward, first driving the movable rod 517 and the H-shaped pushing plate 518 to move downward, and then driving the multiple rectangular pushing blocks 519 to move downward, so that the steel plate can fall back to the surface of the placing table 3, so that the pressing plate 511 can clamp the steel plate. At the same time, when the synchronous pressing plate 516 moves downward, it will compress the roller 5111 downward, thereby driving the rectangular movable frame 5110 to move upward inside the synchronous pressing plate 516 and the outer wall of the circular rod 5112, and compressing the spring four 5113, so that the synchronous pressing plate 516 can fit the upper surface of the steel plate, further expanding the pressing area with the steel plate, and avoiding the danger of the steel plate rebounding during cutting;

[0136] Furthermore, when the uppermost rectangular slider 532 moves downward, it pushes the uppermost swing arm 533 downward. At this time, one end of the uppermost swing arm 533 is restricted and hinged by the second connecting rod 536, thereby driving the other end to deflect downward and push the lower rectangular slider 532 downward through the first connecting rod 535. This reciprocating motion gradually expands the deflection angle of the swing arm 533. Therefore, when the lowermost rectangular slider 532 moves downward, it can push the sliding sleeve 542 downward and simultaneously push the rectangular block 541 downward, thereby squeezing the waste material that has been cut and slides to the unloading ramp 65 and slides onto the bottom plate 61. In the squeezing process, the L-shaped pressure plate is pushed by the spring 1 545 543 moves down a certain distance, and when the L-shaped pressure plate 543 contacts the waste, the compression spring 545 will drive the L-shaped pressure plate 543 and the slide column 544 to slide in the rectangular block 541, thereby adaptively squeezing and compressing waste materials of different thicknesses to improve the waste cleaning efficiency. When the compression is completed, when the rectangular slider 532 moves up, it will drive the sliding sleeve 542 and the rectangular block 541 to move up, thereby driving the L-shaped pressure plate 543 and the slide column 544 to move up, and then move the L-shaped pressure plate 543 away from the unloading ramp 65, so that the cut waste can slide onto the bottom plate 61, waiting for the L-shaped pressure plate 543 to continue to move down to compress the waste.

[0137] See also Figure 1-11 In another embodiment of the present invention, based on the above embodiment, two rectangular grooves are provided at the bottom of the pressing plate 511, and a cleaning mechanism 7 is provided in the right rectangular groove for cleaning the steel plate. The cleaning mechanism 7 includes: a rectangular frame 71 movably connected to the inner wall of the right rectangular groove, and a brush plate 72 is fixedly connected to the bottom of the rectangular frame 71 for cleaning the steel plate;

[0138] Multiple adjustment rods 73 are fixedly connected to the four corners of the top of the brush plate 72, and the outer walls of the adjustment rods 73 are movably connected upward to the circular groove opened at the top of the rectangular groove on the right side of the pressure plate 511. The outer wall of each adjustment rod 73 is respectively sleeved with a spring five 74, and the two ends of the spring five 74 are respectively connected to the pressure plate 511 and the brush plate 72, for pushing the brush plate 72 downward and fitting it to the surface of the steel plate.

[0139] A rectangular through hole is formed on the brush plate 72, and two mounting blocks 75 are fixedly connected to the inner wall of the rectangular frame 71 and are located on the front and rear sides of the rectangular through hole. A rubber roller 76 is rotatably connected between the two mounting blocks 75, and the outer wall of the rubber roller 76 is in contact with the steel plate.

[0140] A plurality of limiting slide bars 79 are fixedly connected to the right side of the inner wall of the rectangular frame 71 and are arranged in groups of two. A U-shaped push block 78 is slidably connected to the outer wall of each two limiting slide bars 79.

[0141] A through hole is formed on the left side of the pressure plate 511 and is connected to the left rectangular groove. A push block 711 is movably connected to the left rectangular groove, and the right side of the push block 711 is fixedly connected to the U-shaped push block 78.

[0142] The pressure plate 511 is provided with a plurality of equally spaced rectangular movable holes 712 that connect the left and right rectangular slots. The rectangular frame 71 is provided with a plurality of second rectangular movable holes 713 that correspond to the first rectangular movable holes 712. The U-shaped push block 78 is located in the second rectangular movable holes 713 and moves left and right. The U-shaped push block 78 is located on the left and right sides of the first rectangular movable hole 712 and moves up and down.

[0143] The outer wall of the rubber roller 76 is provided with annular tooth grooves 77 at intervals on the front and rear sides, and the bottom of the U-shaped push block 78 is provided with a tooth groove, and the annular tooth groove 77 is engaged with the tooth groove. The outer wall of the limiting slide rod 79 is provided with a tension spring 710 for pulling the U-shaped push block 78 to reset.

[0144] Working principle: When the cutting is completed, the position of the steel plate is adjusted. At this time, the pressing plate 511 moves up, and the rectangular frame 71 and the brush plate 72 located in the pressing plate 511 will move downward under the push of the spring 5 74, and at the same time drive the U-shaped push block 78 and the push block 711 to move downward, and make the bristle side of the brush plate 72 and the push block 711 fit the surface of the steel plate. At this time, the steel plate will brush off the waste and dust on its surface during the movement, thereby avoiding the increase of blade wear caused by oxide scale or inclusions on the surface of the steel plate, such as non-metallic inclusions in the steel plate, and thus avoiding the phenomenon of sudden change of local force during shearing and the occurrence of incision gaps.

[0145] When the steel plate moves, it will come into contact with the surface of the rubber roller 76, which will drive the rubber roller 76 to rotate, and then drive the annular tooth groove 77 on the outer wall of the rubber roller 76 to rotate, and engage with the U-shaped push block 78 with the tooth groove, thereby pushing the U-shaped push block 78 to move on the outer wall of the limiting slide rod 79, and when disengaged, the U-shaped push block 78 is pulled to reset through the tension spring 3 710, thereby realizing the continuous left and right movement of the U-shaped push block 78, thereby continuously moving the push block 711 left and right, thereby further improving the cleaning effect on the upper surface of the steel plate.

[0146] The present invention provides an adjustable shearing machine for cutting steel door panels. There are numerous methods and approaches for implementing this technical solution. The above is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. An adjustable shearing machine for cutting steel door panels, comprising a cutting table (2), characterized in that: Also includes: Two support plates (1) are respectively fixedly connected to the front and rear sides of the bottom of the cutting table (2); a placement table (3) is provided on the cutting table (2) for placing steel plates to be cut; A box body (6) is arranged on the left side of the two support plates (1), and a fixing unit (5) is provided inside the box body (6) for fixing the steel plate placed on the placement table (3); Wherein, the fixing unit (5) comprises: A fixing mechanism (51) is arranged in the box (6); The cutting mechanism (52) is connected to the fixing mechanism (51) and slides up and down in the box (6); A pressing mechanism (54) is provided inside the box (6) and is used for pressing the cutting waste; A movable mechanism (53) is arranged inside the box (6), connected to the cutting mechanism (52) and the pressing mechanism (54), and is used to push the cutting mechanism (52) and the pressing mechanism (54) to move up and down; A limiting mechanism (55) is provided inside the box (6) and is used to adjust the cutting position of the steel plate; A cutter assembly (4) is arranged on the top left side of the cutting table (2) and cuts the steel plate when the cutting mechanism (52) moves downward; The cutter assembly (4) comprises: Two fixed blocks (41) are fixedly connected to the top of the cutting table (2) at equal intervals and are located on the left side of the placement table (3); The lower cutter (42) is mounted on the top of the two fixed blocks (41) and is connected to the two fixed blocks (41) via a plurality of screw rods (43) arranged at equal intervals.

2. The adjustable shearing machine for cutting steel door panels according to claim 1 is characterized in that: The box (6) comprises: A bottom plate (61) is fixedly connected to the left sides of the two support plates (1), and the front and rear sides of the top of the bottom plate (61) are respectively fixedly connected to side plates (62), and the tops of the two side plates (62) are fixedly connected to the top plate (63); The right sides of the two side panels (62) are provided with arc-shaped cutouts, and the right sides of the two side panels (62) are fixedly connected with L-shaped side panels (64), and the top of the bottom panel (61) is fixedly connected with a discharge ramp (65) for sliding off the cut waste; The cutting mechanism (52) comprises: Two rectangular slide rails (522) are respectively fixedly connected to the inner side walls of the two side panels (62) and are symmetrically arranged front to back; The rectangular movable block (521) is fixedly connected to sliding sleeves (523) on both the front and rear sides, and slides up and down on the outer wall of the rectangular slide rail (522) and the side plate (62) through the sliding sleeves (523); An inclined plate (524) is fixedly connected to the bottom of the rectangular movable block (521); An upper cutter (525) is fixedly connected to the right side of the outer wall of the inclined plate (524) and is installed on the outer wall of the inclined plate (524) through a plurality of threaded rods arranged at equal intervals; The push plate (526) is fixedly connected to the right side of the rectangular movable block (521).

3. The adjustable shearing machine for cutting steel door panels according to claim 2 is characterized in that: The movable mechanism (53) comprises: Two fixed columns (531) are fixedly connected to the front and rear sides of the bottom of the top plate (63), and the outer surface of each fixed column (531) is slidably connected to a plurality of rectangular sliders (532); A plurality of swing arms (533) are rotatably connected to the outer wall of the uppermost rectangular slider (532), and the outer walls of the lowermost rectangular slider (532) are fixedly connected to push rods (534) respectively, and a connecting rod (535) is hinged between the push rods (534) and the swing arms (533); Two rectangular fixed columns (537) are respectively fixedly connected to the bottom of the top plate (63) and located on the left side of the fixed column (531); the outer wall of each rectangular fixed column (537) is respectively hinged with a plurality of connecting rods (536) at equal intervals, and the other end of the connecting rod (536) is respectively hinged to the end of the swing arm (533) away from the connecting rod (535); Two synchronous push rods (5314) are respectively fixedly connected between the uppermost rectangular slider (532) and the rectangular movable block (521) and are used to synchronously push the rectangular movable block (521) to move up and down; Two pry bars (539) are movably connected to rectangular holes opened on the rectangular fixing column (537), and the right side of each rectangular fixing column (537) is fixedly connected to two hinge seats (5310) located on both sides of the rectangular hole, and the pry bars (539) are hinged on the hinge seats (5310); A U-shaped rod (538) is fixedly connected to the top of the uppermost rectangular slider (532) and is located on the left side of the fixed column (531), and a U-shaped sleeve is provided on the right side of the pry bar (539) and is rotatably connected to the outer wall of the U-shaped rod (538) through the U-shaped sleeve; A synchronization rod (5311), the outer wall of which is fixedly connected to the left sides of the two pry bars (539), and the outer wall of the synchronization rod (5311) is hinged with a hinge rod (5312); The hydraulic cylinder (5313) is fixedly connected to the top of the top plate (63), and the telescopic end of the hydraulic cylinder (5313) movably passes through the top plate (63) and is hinged to the end of the hinge rod (5312) away from the synchronization rod (5311).

4. The adjustable shearing machine for cutting steel door panels according to claim 3 is characterized in that: The limiting mechanism (55) comprises: A fixed plate (551) fixedly connected between the front and rear side plates (62); The U-shaped block (5512) is fixedly connected to two T-shaped slide bars (552) on the top, and the outer wall of the T-shaped slide bar (552) is provided with a tension spring (553) for pulling the T-shaped slide bar (552) upward and driving the U-shaped block (5512) to move upward, and the bottom of the inclined plate (524) is in contact with the top of the U-shaped block (5512); A limit baffle (554) is movably connected to the inner wall of the U-shaped block (5512) and is used to control the cutting length of the steel plate; Two connecting plates (555) are fixedly connected to the front and back of the U-shaped block (5512), respectively; and the front and back of the U-shaped block (5512) are respectively provided with a rectangular sliding hole. Two L-shaped push plates (557) are respectively fixedly connected to the left side of the limit baffle (554) and slidably connected to the inner wall of the rectangular sliding hole 1. The right side of the connecting plate (555) is rotatably connected to the adjusting screw (556), and the L-shaped push plate (557) is threadedly connected to the outer wall of the adjusting screw (556) to drive the L-shaped push plate (557) to move left and right. A second rectangular hole is respectively provided on the two side plates (62), and the connecting plate (555), the adjusting screw (556) and the L-shaped push plate (557) all move up and down in the second rectangular hole.

5. The adjustable shearing machine for cutting steel door panels according to claim 4 is characterized in that: An arc-shaped grinding plate (5511) is provided on the right side of the rectangular movable block (521) for grinding the cutting edge of the steel plate, and a plurality of equally spaced sliding rods (558) are fixedly connected to the left side of the arc-shaped grinding plate (5511), and the left side of the sliding rod (558) is movable through the rectangular movable block (521), and the outer wall of each sliding rod (558) is respectively provided with a tension spring (559), and the outer wall of the sliding rod (558) is threadedly connected with a bolt (5510) for fixing the sliding rod (558).

6. The adjustable shearing machine for cutting steel door panels according to claim 5, characterized in that: The pressing mechanism (54) comprises: A rectangular block (541) is slidably connected between the side plates (62) on both sides, and a sliding sleeve (542) is fixedly connected to the front and rear sides of the top of the rectangular block (541), respectively. The sliding sleeve (542) is slidably connected to the outer wall of the fixed column (531), and the top of the sliding sleeve (542) is fixedly connected to the bottom rectangular slider (532); An L-shaped pressing plate (543) is provided on the outer wall of the rectangular block (541), and the right side of the L-shaped pressing plate (543) contacts one side of the unloading ramp (65); A plurality of slide columns (544) are respectively fixedly connected to the inner wall of the L-shaped pressure plate (543) and movably connected to the bottom slide groove of the rectangular block (541). The outer wall of each slide column (544) is respectively provided with a spring (545), and the two ends of the spring (545) are respectively fixedly connected to the L-shaped pressure plate (543) and the rectangular block (541) for pushing the L-shaped pressure plate (543) downward.

7. The adjustable shearing machine for cutting steel door panels according to claim 6, characterized in that: The fixing mechanism (51) comprises: A pressing plate (511) is provided below the L-shaped side plate (64) and is used for pressing the steel plate; A plurality of telescopic rods (515) are arranged at equal intervals and movably connected to the L-shaped side plate (64), and the top of the telescopic rod (515) is fixedly connected to the contact plate (512), and the top of the contact plate (512) contacts the bottom of the push plate (526); The outer wall of the telescopic rod (515) is respectively provided with a spring 2 (513) and a spring 3 (514), and is respectively located on the inner and outer sides of the L-shaped side plate (64). The two ends of the spring 2 (513) are respectively connected to the contact plate (512) and the L-shaped side plate (64), and the two ends of the spring 3 (514) are respectively connected to the pressure plate (511) and the L-shaped side plate (64).

8. The adjustable shearing machine for cutting steel door panels according to claim 7, characterized in that: The fixing mechanism (51) further comprises: A synchronous pressing plate (516) is fixedly connected to the right side of the pressing plate (511), and the four corners of the bottom of the synchronous pressing plate (516) are respectively fixedly connected to movable rods (517), and the bottom of the movable rod (517) is fixedly connected to an H-shaped push plate (518), and the H-shaped push plate (518) slides in a sliding groove provided on the inner wall of the support plate (1); The placement table (3) and the cutting table (2) are provided with a plurality of through holes arranged at equal intervals, and a rectangular push block (519) is movably connected in each through hole, and the bottom of the rectangular push block (519) is connected to the top of the H-shaped push plate (518); The bottom of the synchronous pressing plate (516) is provided with a mounting groove, and the mounting groove is movably connected to a rectangular movable frame (5110), the top of the inner wall of the mounting groove is fixedly connected to a plurality of circular rods (5112), and the rectangular movable frame (5110) slides on the outer wall of the circular rod (5112), and the outer wall of each circular rod (5112) is provided with a spring four (5113), and the two ends of the spring four (5113) are connected to the rectangular movable frame (5110) and the top of the mounting groove of the synchronous pressing plate (516) for pushing the rectangular movable frame (5110) downward; A plurality of rollers (5111) are rotatably connected to the inner wall of the rectangular movable frame (5110) and are arranged axially in the front and rear directions for rolling against the upper surface of the steel plate.

9. The adjustable shearing machine for cutting steel door panels according to claim 8, characterized in that: Two rectangular grooves are provided at the bottom of the pressing plate (511), and a cleaning mechanism (7) is provided in the right rectangular groove for cleaning the steel plate. The cleaning mechanism (7) comprises: A rectangular frame (71) is movably connected to the inner wall of the rectangular groove on the right side, and a brush plate (72) is fixedly connected to the bottom of the rectangular frame (71) for cleaning the steel plate; A plurality of adjusting rods (73) are fixedly connected to the four corners of the top of the brush plate (72), and the outer wall of the adjusting rod (73) is movably connected upward to the circular groove opened at the top of the rectangular groove on the right side of the pressure plate (511). The outer wall of each adjusting rod (73) is respectively provided with a spring five (74), and the two ends of the spring five (74) are respectively connected to the pressure plate (511) and the brush plate (72), so as to push the brush plate (72) downward and fit it to the surface of the steel plate.

10. The adjustable shearing machine for cutting steel door panels according to claim 9, characterized in that: A rectangular through hole is provided on the brush plate (72), and two mounting blocks (75) are fixedly connected to the inner wall of the rectangular frame (71) and are located at the front and rear sides of the rectangular through hole. A rubber roller (76) is rotatably connected between the two mounting blocks (75), and the outer wall of the rubber roller (76) is in contact with the steel plate. A plurality of limiting slide bars (79) are fixedly connected to the right side of the inner wall of the rectangular frame (71), and are arranged in groups of two, and the outer walls of each two limiting slide bars (79) are slidably connected to a U-shaped push block (78); The left side of the pressing plate (511) is provided with a through hole, which is communicated with the left rectangular groove, and a push block (711) is movably connected in the left rectangular groove, and the right side of the push block (711) is fixedly connected to the U-shaped push block (78); The pressure plate (511) is provided with a plurality of rectangular movable holes (712) arranged at equal intervals and connected to the left and right rectangular slots. The rectangular frame (71) is provided with a plurality of rectangular movable holes (713) corresponding to the rectangular movable holes (712). The U-shaped push block (78) is located in the rectangular movable hole (713) and moves left and right. The U-shaped push block (78) is located on the left and right of the rectangular movable hole (712) and moves up and down. The outer wall of the rubber roller (76) is provided with annular tooth grooves (77) arranged at intervals at the front and rear sides, and the bottom of the U-shaped push block (78) is provided with a tooth groove, and the annular tooth groove (77) is engaged with the tooth groove. The outer wall of the limiting slide rod (79) is provided with a tension spring three (710) for pulling the U-shaped push block (78) to reset.

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