Metal cutting device for fireproof composite board

Abstract

The invention relates to the technical field of plate processing, in particular to a metal cutting device for a fireproof composite plate, which is used for solving the problem that an existing device cannot adapt to automatic grinding distance adjustment due to grinding piece loss, and comprises a fixing mechanism, a cutting mechanism and a distance adjusting mechanism, the fixing mechanism is used for clamping the fireproof composite plate, and the cutting mechanism is used for cutting the fireproof composite plate. The cutting mechanism is used for cutting the fireproof composite board; the distance adjusting mechanism comprises two cross arms fixedly arranged on the upper portion of the fireproof composite board, swing arms are hinged to the two cross arms, the bottoms of the two swing arms are connected to the two cut fireproof composite boards respectively, and after each time of grinding of the grinding piece and before next time of grinding, the two swing arms swing oppositely according to the grinding times by an equal increasing micro distance. Therefore, the clearance is gradually reduced along with the grinding times of the grinding sheet to make up the loss of the grinding sheet; according to the device, the gap of the section can be gradually reduced along with the increase of the use times of the grinding piece, so that the gap is reduced along with the loss of the grinding piece, and the grinding effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of plate processing, and in particular to a metal cutting device for fireproof composite plates. Background Art

[0002] In the field of modern construction and industrial manufacturing, fireproof composite panels are widely used due to their excellent fireproof performance and good physical and mechanical properties. However, in the processing of fireproof composite panels, cutting and grinding are two crucial links. Traditional cutting methods can often only achieve basic cutting functions, while subsequent grinding processing usually requires manual labor or the use of independent grinding equipment, which not only increases production costs, but also reduces production efficiency, and it is difficult to ensure the consistency and accuracy of grinding.

[0003] Especially in automated production lines, the continuity and precision of cutting and grinding are required to be higher. After cutting the fireproof composite board with a traditional cutting device, the cross section is often rough and requires an additional grinding step to smooth it out to avoid safety hazards caused by sharp edges during use. However, most existing automated cutting equipment lacks an integrated grinding function, or the grinding effect is not ideal, and cannot effectively deal with the problem of gradual wear of the grinding disc as the use time increases, resulting in a decrease in grinding accuracy and affecting product quality.

[0004] In addition, the wear of the grinding disc is a continuous and inevitable process. Existing devices usually manually observe the grinding effect deterioration and then manually adjust the grinding parameters. It cannot be discovered in time, resulting in the possibility of rework later, which not only wastes energy but also reduces the processing speed. Summary of the invention

[0005] The invention provides a metal cutting device for fireproof composite panels to solve the problem that the existing device cannot automatically adjust the grinding distance to adapt to the loss of the grinding sheet.

[0006] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0007] A metal cutting device for a fireproof composite board, comprising a fixing mechanism, a cutting mechanism and a distance adjustment mechanism, wherein the fixing mechanism is used to clamp the fireproof composite board, and the cutting mechanism is used to cut the fireproof composite board;

[0008] The cutting mechanism comprises a circular saw, and two grinding plates are symmetrically connected to two end surfaces of the circular saw. After the circular saw cuts the fireproof composite board, it continues to move downward so that the grinding plates contact the cut section, thereby grinding the cut section;

[0009] The distance adjustment mechanism includes two cross arms fixedly arranged on the upper part of the fireproof composite board, and the two cross arms are hinged with swing arms. The bottoms of the two swing arms are respectively connected to the two cut fireproof composite boards. After the circular saw cuts the fireproof composite board, the two swing arms swing away from each other to form a gap for the grinding plate to pass through between the two cut fireproof composite boards. Moreover, after each grinding of the grinding plate and before the next grinding, the two swing arms swing toward each other by a micro distance that increases equally with the number of grindings, so that the gap gradually decreases with the number of grindings of the grinding plate to compensate for the loss of the grinding plate.

[0010] Furthermore, the cutting mechanism also includes a bracket connected to the fixing mechanism, a slider is slidably connected to the bracket, and the circular saw is connected to the slider.

[0011] Furthermore, it also includes a reversing mechanism, the reversing mechanism includes a rectangular plate connected to the bracket, a parallelogram slide groove is provided on the rectangular plate, a slide column is connected to the slider, and the slide column is slidably connected to the parallelogram slide groove;

[0012] The two acute angles of the parallelogram slide groove are respectively slidably connected with a first wedge block and a second wedge block. When the slide column slides counterclockwise in the parallelogram slide groove, it can alternately push the first wedge block and the second wedge block to slide.

[0013] Furthermore, the reversing mechanism further comprises an arc block vertically sliding on the upper horizontal section of the parallelogram slideway, the arc block is connected with a first piston rod, the rectangular plate is fixedly connected with a first piston cylinder, the first piston rod slides in the first piston cylinder, a first spring is connected between the first piston rod and the first piston cylinder, an arc hydraulic rod is connected between the cross arm and the swing arm, the arc hydraulic rod is connected with a first pipeline, the first pipeline is connected with a distance adjusting tube, and a fourth pipeline is connected between the first piston cylinder and the distance adjusting tube;

[0014] The arc block is arranged at a position close to the first wedge block. When the sliding column slides to the arc block, the fireproof composite board is cut into two pieces, and the sliding column pushes the arc block upward to extend the arc hydraulic rod, so that the two swing arms swing away from each other.

[0015] Furthermore, the reversing mechanism further comprises a second piston rod, a second piston cylinder is slidably connected to the second piston rod, a second spring is sleeved on the second piston rod, and two ends of the second spring are respectively against the first wedge block and the rectangular plate;

[0016] The adjustable distance tube is connected with the second piston cylinder, and an electromagnetic valve is arranged on the adjustable distance tube, a one-way valve is arranged on the fourth pipeline, a first pressure-sensitive switch for controlling the electromagnetic valve is arranged on the contact surface between the first wedge block and the sliding column, and when the second piston rod slides into the second piston cylinder, the second piston cylinder extracts the medium in the arc-shaped hydraulic rod to make the two swing arms swing toward each other.

[0017] Furthermore, a baffle is provided in the sliding direction of the second piston cylinder, and the baffle can block the axial sliding of the second piston cylinder, so that the second piston rod slides into the second piston cylinder.

[0018] Furthermore, the rectangular plate is rotatably connected to two screw rods, and the baffle is provided with threaded holes that cooperate with the two screw rods;

[0019] When the slide column squeezes the first pressure-sensitive switch, the screw rod synchronously rotates by a slight angle, so that the initial position distance between the baffle and the second piston cylinder is reduced;

[0020] The initial position distance between the baffle and the second piston cylinder gradually decreases as the first pressure-sensitive switch is pressed more and more times, so that the second piston cylinder gradually extracts more and more medium in the arc-shaped hydraulic rod, so that the distance at which the two swing arms swing toward each other increases gradually.

[0021] Furthermore, an oil box is connected to the bracket, a third pipeline is connected between the first piston cylinder and the oil box, and a one-way valve is arranged on the third pipeline.

[0022] Furthermore, a second pipeline is connected between the oil box and the first pipeline, a micro pump is arranged on the second pipeline, and a second pressure-sensitive switch is arranged on the contact surface between the second wedge block and the sliding column;

[0023] When the slide column contacts the second pressure-sensitive switch, the cutting mechanism is reset, the solenoid valve is opened, the micro pump is started, and the medium in the arc-shaped hydraulic rod and the second piston cylinder is extracted through the first pipeline and the pitch-adjusting tube, so that the reversing mechanism is reset.

[0024] Furthermore, a round rod is connected to the second wedge block, the round rod slides axially on the rectangular plate, a third spring is sleeved on the round rod, and two ends of the third spring are respectively in contact with the second wedge block and the rectangular plate.

[0025] The beneficial effects of the present invention are analyzed as follows:

[0026] A metal cutting device for fireproof composite panels comprises a fixing mechanism, a cutting mechanism and a distance adjusting mechanism, wherein the fixing mechanism is used to clamp the fireproof composite panels, and the cutting mechanism is used to cut the fireproof composite panels; the cutting mechanism comprises a circular saw, and two grinding plates are symmetrically connected to the two end faces of the circular saw. After the circular saw cuts the fireproof composite panels, it continues to move downward so that the grinding plates contact the cutting section, thereby grinding the cutting section; the distance adjusting mechanism comprises two horizontal arms fixedly arranged on the upper part of the fireproof composite panels, and swing arms are hinged on the two horizontal arms, and the bottoms of the two swing arms are respectively connected to the two fireproof composite panels after cutting. After the circular saw cuts the fireproof composite panels, the two swing arms swing away from each other, so that a gap for the grinding plate to pass through is formed between the two fireproof composite panels after cutting, and, after each grinding of the grinding plate, before the next grinding, the two swing arms swing towards each other by a micro distance that increases by an equal amount with the number of grinding times, so that the gap gradually decreases with the number of grinding times of the grinding plate to compensate for the loss of the grinding plate.

[0027] The swing arm of the device will not swing back further after the first swing forms a gap at the cut-off point of the fireproof composite board, and the grinding sheet is in a brand new state at this time, and its thickness is just slightly larger than the width of the gap. As the number of operations of the device increases, when the cross-section of the fireproof composite board is polished for the second time, after the swing arm swings to form a gap between the two fireproof composite boards, the swing arm swings back a slight distance, and this slight distance can just make up for the wear of the grinding sheet. When the cross-section of the fireproof composite board is polished for the third time, the distance that the swing arm swings back is a slight increase on the basis of the second swing-back distance, and so on, to ensure that the gap formed at the cut-off point of the fireproof composite board can adapt to the grinding sheet that is constantly worn and thinned. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the rack of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the support of the present invention;

[0033] Figure 5It is a structural schematic diagram of the circular saw of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the distance adjustment mechanism of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the reversing mechanism of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the first piston rod of the present invention.

[0037] icon:

[0038] 100, fixing mechanism; 110, workbench; 120, first motor; 130, driving shaft; 140, gear; 150, rack; 160, positioning frame; 170, positioning block; 171, pressure strip; 180, electric push rod; 190, pressure block; 200, cutting mechanism; 210, slider; 211, slide column; 220, second motor; 230, circular saw; 240, grinding disc; 250, bracket; 300, reversing mechanism; 310, rectangular plate; 320, parallelogram slide; 330, first wedge; 331, second piston cylinder; 332, second movable Plug rod; 333, second spring; 340, second wedge block; 341, round rod; 342, third spring; 350, baffle; 351, screw; 360, arc block; 361, first piston rod; 362, first spring; 363, first piston cylinder; 370, distance adjustment tube; 371, first pipeline; 372, second pipeline; 373, third pipeline; 374, fourth pipeline; 380, oil box; 381, micro pump; 400, distance adjustment mechanism; 410, cross arm; 420, swing arm; 421, through groove; 422, limit rod; 430, arc hydraulic rod. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example

[0043] like Figure 1-Figure 8 As shown, a metal cutting device for fireproof composite panels includes a fixing mechanism 100, a cutting mechanism 200 and a distance adjustment mechanism 400. The fixing mechanism 100 is used to clamp the fireproof composite panel, and the cutting mechanism 200 is used to cut the fireproof composite panel; the cutting mechanism 200 includes a circular saw 230, and two grinding plates 240 are symmetrically connected to the two end faces of the circular saw 230. After the circular saw 230 cuts the fireproof composite panel, it continues to move downward so that the grinding plates 240 contact the cut section, thereby grinding the cut section; the distance adjustment mechanism 400 includes two cross arms fixedly arranged on the upper part of the fireproof composite panel. 410, the two horizontal arms 410 are hinged with swing arms 420, and the bottoms of the two swing arms 420 are respectively connected to the two fireproof composite boards after cutting. After the circular saw 230 cuts the fireproof composite board, the two swing arms 420 swing away from each other to form a gap for the grinding sheet 240 to pass through between the two cut fireproof composite boards, and after each grinding of the grinding sheet 240 and before the next grinding, the two swing arms 420 swing towards each other by a minute distance that increases by the same amount as the number of grindings, so that the gap gradually decreases as the number of grindings of the grinding sheet 240 is repeated to compensate for the loss of the grinding sheet 240.

[0044] The working mechanism of the cutting device provided in this embodiment is as follows:

[0045] When cutting the fireproof composite board, the fireproof composite board is placed and fixed firmly by the fixing mechanism 100. After the fireproof composite board is fixed firmly, the cutting mechanism 200 is started, and the circular saw 230 rotates and cuts the fireproof composite board. After the fixing mechanism 100 fixes the fireproof composite board firmly, the swing arm 420 presses down at the same time to apply pressure to the fireproof composite board so that the fireproof composite board fits on the fixing mechanism 100. After the circular saw 230 cuts the fireproof composite board into two halves, the two swing arms 420 swing back to back, so that the two cut fireproof composite boards are separated from each other, so that there is a gap between the two. The distance of this gap is slightly smaller than the thickness of the grinding sheet 240. When the gap is formed, the circular saw 230 moves down so that the grinding sheet 240 is in the gap, and then the circular saw 230 moves back. At this time, the grinding sheet 240 grinds the cross section of the cut fireproof composite board, so that the cut part of the cut fireproof composite board is polished to eliminate burrs.

[0046] The grinding sheet 240 will wear out with use, so that the thickness of the grinding sheet 240 gradually decreases. In order to facilitate the subsequent grinding of the broken part of the fireproof composite board without the need for adjustment each time, the swing arm 420 of the device will no longer swing back further after the first swing to form a gap at the cut part of the fireproof composite board. At this time, the grinding sheet 240 is in a brand new state, and its thickness is just slightly larger than the width of the gap. As the number of operations of the device increases, when the cross-section of the fireproof composite board is polished for the second time, after the swing arm 420 swings to form a gap between the two fireproof composite boards, the swing arm 420 swings back a slight distance, and this slight distance can just make up for the wear of the grinding sheet 240. When the cross-section of the fireproof composite board is polished for the third time, the distance that the swing arm 420 swings back is a slight distance increased on the basis of the second swing back distance, and so on, to ensure that the gap formed at the cut part of the fireproof composite board can adapt to the grinding sheet 240 that is constantly worn and thinned. After replacing the grinding sheet 240, the swing distance of the swing arm 420 is manually reset.

[0047] Regarding the structure of the fixing mechanism 100, specifically:

[0048] The fixing mechanism 100 includes a workbench 110, a first motor 120 connected to the side of the workbench 110, and when the first motor 120 is started, the drive shaft 130 rotates, and at this time, the gear 140 on the drive shaft 130 drives the two racks 150 to approach each other, and at this time, the positioning frames 160 connected to the two racks 150 approach each other, and the positioning blocks 170 connected to the two positioning frames 160 approach each other and clamp the fireproof composite board placed on the workbench 110, and the positioning blocks 170 are provided with pressure sensors. After the pressure sensor detects that the pressure between the positioning blocks 170 and the fireproof composite board is sufficient to clamp the fireproof composite board firmly, the first motor The machine 120 stops running. The first motor 120 has a self-locking function to ensure that the fireproof composite board is firmly clamped. After the first motor 120 stops running, the electric push rod 180 runs, so that the pressure block 190 connected to its output end is pushed. At this time, the pressure block 190 is pressed on the fireproof composite board. There are two groups of positioning frames 160. A groove is opened in the middle of the workbench 110. This groove is used to allow the circular saw 230 and the grinding sheet 240 to pass through, and at the same time, the metal chips generated during grinding and cutting are stored. The two groups of positioning frames 160 are symmetrically arranged on both sides of the groove, so that the two fireproof composite boards after cutting can be fixed;

[0049] The positioning block 170 is slidably connected to the positioning frame 160, and a limiting rod 422 is connected to the pressure strip 171. The limiting rod 422 slides in a through groove 421 opened at the lower part of the swing arm 420. The slotting direction of the through groove 421 is consistent with the length direction of the pressure strip 171. The pressure strip 171 is slidably connected to the two positioning blocks 170 on the same side, and the sliding direction is the length direction of the pressure strip 171, so that the positioning block 170 is not interfered with in clamping the fireproof composite board. The table top of the workbench 110 can be provided with structures such as ball bearings, so that when the swing arm 420 swings, the cut fireproof composite boards can be easily driven by the swing arm 420 to move closer to or away from each other.

[0050] Regarding the structure of the cutting mechanism 200, specifically:

[0051] The cutting mechanism 200 further includes a bracket 250 connected to the fixing mechanism 100 , a slider 210 is slidably connected to the bracket 250 , and the circular saw 230 is connected to the slider 210 .

[0052] The slider 210 is driven to slide on the bracket 250 by electromagnetic force or power such as a screw rod and a cylinder. A second motor 220 is connected to the slider 210. The second motor 220 drives the circular saw 230 to rotate through the cooperation of a pulley and a belt. When the slider 210 slides, it drives the circular saw 230 to move and cut the fireproof composite board.

[0053] After the circular saw 230 cuts the fireproof composite board, how does the grinding sheet 240 move to the cut-off portion of the fireproof composite board to perform the grinding operation? Specifically:

[0054] It also includes a reversing mechanism 300, which includes a rectangular plate 310 connected to the bracket 250, a parallelogram slide groove 320 is opened on the rectangular plate 310, a sliding column 211 is connected to the slider 210, and the sliding column 211 is slidably connected to the parallelogram slide groove 320; the first wedge block 330 and the second wedge block 340 are slidably connected at the two acute angles of the parallelogram slide groove 320, respectively, and when the sliding column 211 slides counterclockwise in the parallelogram slide groove 320, it can alternately push the first wedge block 330 and the second wedge block 340 to slide.

[0055] The slider 210 is composed of a slider and a body. The body can slide vertically relative to the slider. The second motor 220 and the circular saw 230 are both connected to the body. The slide post 211 is connected to the body. When the circular saw 230 cuts the fireproof composite board, the slider 210 slides on the bracket 250. At this time, the slide post 211 slides in the upper horizontal section of the parallelogram slide groove 320. When the slide post 211 slides to the obtuse angle of the parallelogram slide groove 320, as the slider 210 continues to slide, the slide post 211 slides toward the inclined section of the parallelogram slide groove 320. At this time, the body slides down relative to the slider, so that the circular saw 230 moves down relative to the fireproof composite board. At this time, the grinding sheet 240 moves to the disconnection point of the fireproof composite board, and the slide post 211 slides in the parallelogram slide groove 320. When the inclined section slides down, it can push the first wedge block 330. After the first wedge block 330 is pushed and reset, the sliding column 211 slides to the lower horizontal section of the parallelogram slide groove 320. At this time, the slider 210 slides back, so that the grinding sheet 240 grinds the disconnection of the fire-proof composite board. When the sliding column 211 slides to the lower horizontal section of the parallelogram slide groove 320 and another inclined section, as the slider 210 continues to slide, the sliding column 211 slides up in the inclined section. At this time, the sliding column 211 can contact and push the second wedge block 340. After the sliding column 211 pushes the second wedge block 340 and the second wedge block 340 is reset, the sliding column 211 moves to the upper horizontal section of the parallelogram slide groove 320 at this time, so that the main body moves up, so that the circular saw 230 is reset.

[0056] How to keep the two fireproof composite panels away from each other after cutting:

[0057] The reversing mechanism 300 further includes an arc block 360 that slides vertically on the upper horizontal section of the parallelogram slide groove 320, the arc block 360 is connected to a first piston rod 361, the rectangular plate 310 is fixedly connected to a first piston cylinder 363, the first piston rod 361 slides in the first piston cylinder 363, a first spring 362 is connected between the first piston rod 361 and the first piston cylinder 363, an arc hydraulic rod 430 is connected between the cross arm 410 and the swing arm 420, and the arc hydraulic rod 430 is connected between the cross arm 410 and the swing arm 420. The rod 430 is connected to a first pipe 371, the first pipe 371 is connected to a distance-adjusting tube 370, and a fourth pipe 374 is connected between the first piston cylinder 363 and the distance-adjusting tube 370; the arc block 360 is arranged near the first wedge block 330, and when the sliding column 211 slides to the arc block 360, the fireproof composite board is cut into two pieces, and the sliding column 211 pushes the arc block 360 to move upward, so that the arc hydraulic rod 430 is extended, so that the two swing arms 420 swing back to each other.

[0058] An arc block 360 is provided at the position of the upper horizontal section of the parallelogram slide 320 near the first wedge block 330. When the slide column 211 moves to the arc block 360, the circular saw 230 cuts off the fireproof composite board. When the slide column 211 continues to move, it pushes the arc block 360. At this time, the first piston rod 361 slides into the first piston cylinder 363, so that the hydraulic oil in the first piston cylinder 363 enters the arc hydraulic rod 430 through the fourth pipeline 374, the distance adjusting tube 370 and the first pipeline 371. At this time, the arc hydraulic rod 430 extends, so that the two swing arms 420 swing back to back, and drive the two groups of pressure strips 171 and the positioning blocks 170 to move away from each other, so that the gap between the fireproof composite boards at both ends of the cut is increased to the distance of the initial thickness of the grinding sheet 240, so that the broken part of the fireproof composite board is polished.

[0059] How to adjust the gap distance according to the wear of the grinding sheet 240, specifically:

[0060] The reversing mechanism 300 also includes a second piston rod 332, on which a second piston cylinder 331 is slidably connected, and a second spring 333 is sleeved on the second piston rod 332, and the two ends of the second spring 333 are respectively against the first wedge block 330 and the rectangular plate 310; the distance regulating tube 370 is connected to the second piston cylinder 331, and a solenoid valve is arranged on the distance regulating tube 370, and a one-way valve is arranged on the fourth pipeline 374, and a first pressure-sensitive switch for controlling the solenoid valve is arranged on the contact surface between the first wedge block 330 and the sliding column 211, and when the second piston rod 332 slides into the second piston cylinder 331, the second piston cylinder 331 extracts the medium in the arc-shaped hydraulic rod 430 to make the two swing arms 420 swing towards each other; the sliding of the second piston cylinder 331 A baffle 350 is provided in the moving direction, and the baffle 350 can block the axial sliding of the second piston cylinder 331, so that the second piston rod 332 slides into the second piston cylinder 331; two screws 351 are rotatably connected to the rectangular plate 310, and a threaded hole matching the two screws 351 is opened on the baffle 350; when the sliding column 211 squeezes the first pressure-sensitive switch, the screw 351 rotates synchronously by a slight angle, so that the initial position distance between the baffle 350 and the second piston cylinder 331 is reduced; the initial position distance between the baffle 350 and the second piston cylinder 331 gradually decreases with the number of times the first pressure-sensitive switch is pressed, so that the second piston cylinder 331 extracts a gradually increasing amount of medium in the arc-shaped hydraulic rod 430, so that the distance between the two swing arms 420 swinging towards each other increases gradually.

[0061] When the sliding column 211 slides to the first wedge block 330 position of the parallelogram sliding groove 320, the circular saw 230 moves downward, so that the grinding disc 240 can grind the broken part of the fireproof composite board. At this time, the first wedge block 330 drives the second piston rod 332 and the second piston cylinder 331 to slide synchronously, and the second spring 333 is compressed. The two ends of the second spring 333 are respectively in contact with the first wedge block 330 and the rectangular plate 310. Therefore, when the fireproof composite board is polished for the first time, the first pressure-sensitive switch is pressurized to make the screw 351 rotate, and the second piston cylinder 331 still does not contact the baffle 350. The first wedge block 330 drives the second piston rod 332 and the second piston cylinder 331 to slide synchronously. At this time, the second piston cylinder 331 does not extract the hydraulic oil in the arc hydraulic rod 430, and the swing arm 420 does not When the first wedge block 330 is in a sliding state, the sliding stroke of the first wedge block 330 is fixed, so that when the baffle plate 350 is close to the second piston cylinder 331, the second piston rod 332 can slide into the second piston cylinder 331. At this time, the second piston cylinder 331 extracts the hydraulic oil in the arc-shaped hydraulic rod 430, so that the swing arm 420 swings back a slight distance, so that the gap becomes smaller and the worn grinding sheet 240 is compensated. By analogy, the baffle plate 350 gradually approaches the rectangular plate 310 with the number of grinding times of the grinding sheet 240, so that the gap formed after the fireproof composite board is cut gradually becomes smaller;

[0062] The screw 351 is controlled to rotate by a micro motor. When the grinding sheet 240 is switched, the micro motor is controlled to reverse so that the baffle 350 is reset.

[0063] Regarding how to reset the device as a whole after grinding, specifically;

[0064] An oil box 380 is connected to the bracket 250, and a third pipe 373 is connected between the first piston cylinder 363 and the oil box 380, and a one-way valve is arranged on the third pipe 373; a second pipe 372 is connected between the oil box 380 and the first pipe 371, and a micro pump 381 is arranged on the second pipe 372, and a second pressure-sensitive switch is arranged on the contact surface between the second wedge block 340 and the sliding column 211; when the sliding column 211 contacts the second pressure-sensitive switch, the cutting mechanism 200 is reset, and the solenoid valve is opened, the micro pump 381 is started, and the medium in the arc hydraulic rod 430 and the second piston cylinder 331 is extracted through the first pipe 371 and the distance adjustment tube 370, so that the reversing mechanism 300 is reset.

[0065] The third pipe 373 and the fourth pipe 374 connected to the first piston cylinder 363 are both provided with a one-way valve to ensure that the hydraulic oil in the oil box 380 can only enter the first piston cylinder 363 through the third pipe 373, and the hydraulic oil in the first piston cylinder 363 can only be discharged through the fourth pipe 374. When the sliding column 211 moves to the second wedge block 340, the second pressure-sensitive switch on the second wedge block 340 is pressurized, and the circular saw 230 returns to its original position. At the same time, the solenoid valve is opened and the micro pump 381 is started. At this time, the hydraulic oil in the second piston cylinder 331 is pumped into the oil box 380 through the distance adjustment tube 370, the first pipe 371 and the second pipe 372. The hydraulic oil in the arc hydraulic rod 430 is pumped into the oil box 380 through the first pipe 371 and the second pipe 372. When the arc hydraulic rod 430 moves to the second wedge block 340, the second pressure-sensitive switch on the second wedge block 340 is pressurized, and the circular saw 230 returns to its original position. At the same time, the solenoid valve is opened and the micro pump 381 is started. 30 and the hydraulic oil in the second piston cylinder 331 are pumped back, the reversing mechanism 300 is reset, and at the same time, the sliding column 211 is separated from the contact with the second wedge block 340, so that the micro pump 381 stops running, the solenoid valve is closed, the sliding speed of the sliding column 211 is constant, the pressure-bearing time of the second pressure-sensitive switch is also fixed, and the amount of hydraulic oil in the arc hydraulic rod 430 and the second piston cylinder 331 is not fixed, so that the micro pump 381 extracts the hydraulic oil of the second piston cylinder 331 and the arc hydraulic rod 430. After the hydraulic oil is completely pumped out, the negative pressure generated by the micro pump 381 causes the hydraulic oil in the oil box 380 to flow back to the oil box 380 through the third pipe 373, the first piston cylinder 363, the fourth pipe 374, the pitch adjusting pipe 370, the first pipe 371 and the second pipe 372, so that the micro pump 381 is not damaged.

[0066] Among the optional methods of this embodiment, the more preferred ones are:

[0067] The second wedge block 340 is connected with a round rod 341 which slides axially on the rectangular plate 310 . The round rod 341 is sleeved with a third spring 342 . Two ends of the third spring 342 abut against the second wedge block 340 and the rectangular plate 310 , respectively.

[0068] When the second wedge block 340 is pushed, the third spring 342 is compressed, and the round rod 341 slides. After the sliding column 211 slides out of contact with the second wedge block 340, the third spring 342 rebounds, so that the second wedge block 340 is reset, so that the sliding column 211 will not slide reversely in the parallelogram slot 320.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal cutting device for fireproof composite panels, Features: It comprises a fixing mechanism (100), a cutting mechanism (200) and a distance adjustment mechanism (400), wherein the fixing mechanism (100) is used to clamp the fireproof composite board, and the cutting mechanism (200) is used to cut the fireproof composite board; The cutting mechanism (200) comprises a circular saw (230), two grinding plates (240) being symmetrically connected to two end surfaces of the circular saw (230), and the circular saw (230) continues to move downward after cutting the fireproof composite board so that the grinding plates (240) contact the cut section, thereby grinding the cut section; The distance adjustment mechanism (400) comprises two horizontal arms (410) fixedly arranged on the upper part of the fireproof composite board, and the two horizontal arms (410) are hinged with swing arms (420), and the bottoms of the two swing arms (420) are respectively connected to the two cut fireproof composite boards. After the circular saw (230) cuts the fireproof composite board, the two swing arms (420) swing away from each other, so that a gap for the grinding sheet (240) to pass through is formed between the two cut fireproof composite boards, and after each grinding of the grinding sheet (240), before the next grinding, the two swing arms (420) swing towards each other by a micro distance that increases in the same amount as the number of grindings, so that the gap gradually decreases as the number of grindings of the grinding sheet (240) is repeated to compensate for the loss of the grinding sheet (240).

2. The metal cutting device for fireproof composite panels according to claim 1, Features: The cutting mechanism (200) further comprises a bracket (250) connected to the fixing mechanism (100), a slider (210) being slidably connected to the bracket (250), and the circular saw (230) being connected to the slider (210).

3. The metal cutting device for fireproof composite panels according to claim 2, Features: The invention also comprises a reversing mechanism (300), wherein the reversing mechanism (300) comprises a rectangular plate (310) connected to the bracket (250), a parallelogram slide groove (320) is provided on the rectangular plate (310), a slide column (211) is connected to the slider (210), and the slide column (211) is slidably connected to the parallelogram slide groove (320); A first wedge block (330) and a second wedge block (340) are respectively slidably connected at two acute angles of the parallelogram slide groove (320), and the slide column (211) can alternately push the first wedge block (330) and the second wedge block (340) to slide when sliding counterclockwise in the parallelogram slide groove (320).

4. The metal cutting device for fireproof composite panels according to claim 3, Features: The reversing mechanism (300) further comprises an arc block (360) which slides vertically on the upper horizontal section of the parallelogram slide groove (320); the arc block (360) is connected to a first piston rod (361); the rectangular plate (310) is fixedly connected to a first piston cylinder (363); the first piston rod (361) slides in the first piston cylinder (363); a first spring (362) is connected between the first piston rod (361) and the first piston cylinder (363); an arc hydraulic rod (430) is connected between the cross arm (410) and the swing arm (420); the arc hydraulic rod (430) is connected to a first pipeline (371); the first pipeline (371) is connected to a distance adjusting tube (370); a fourth pipeline (374) is connected between the first piston cylinder (363) and the distance adjusting tube (370); The arc block (360) is arranged at a position close to the first wedge block (330). When the sliding column (211) slides to the arc block (360), the fireproof composite board is cut into two pieces, and the sliding column (211) pushes the arc block (360) to move upward, so that the arc hydraulic rod (430) is extended, so that the two swing arms (420) swing away from each other.

5. The metal cutting device for fireproof composite panels according to claim 4, Features: The reversing mechanism (300) further comprises a second piston rod (332), a second piston cylinder (331) being slidably connected to the second piston rod (332), a second spring (333) being sleeved on the second piston rod (332), and two ends of the second spring (333) respectively abutting against the first wedge block (330) and the rectangular plate (310); The pitch-adjusting tube (370) is connected to the second piston cylinder (331), and a solenoid valve is arranged on the pitch-adjusting tube (370). A one-way valve is arranged on the fourth pipeline (374). A first pressure-sensitive switch for controlling the solenoid valve is arranged on the contact surface between the first wedge block (330) and the sliding column (211). When the second piston rod (332) slides into the second piston cylinder (331), the second piston cylinder (331) extracts the medium in the arc-shaped hydraulic rod (430) so that the two swing arms (420) swing towards each other.

6. The metal cutting device for fireproof composite panels according to claim 5, Features: A baffle (350) is provided in the sliding direction of the second piston cylinder (331), and the baffle (350) can block the axial sliding of the second piston cylinder (331), so that the second piston rod (332) slides into the second piston cylinder (331).

7. The metal cutting device for fireproof composite panels according to claim 6, Features: The rectangular plate (310) is rotatably connected to two screw rods (351), and the baffle plate (350) is provided with threaded holes that match the two screw rods (351); When the slide column (211) presses the first pressure-sensitive switch, the screw rod (351) synchronously rotates by a slight angle, so that the initial position distance between the baffle plate (350) and the second piston cylinder (331) is reduced; The initial position spacing between the baffle (350) and the second piston cylinder (331) gradually decreases as the first pressure-sensitive switch is pressed more and more times, so that the second piston cylinder (331) extracts a gradually increasing amount of medium in the arc-shaped hydraulic rod (430), thereby increasing the distance that the two swing arms (420) swing toward each other.

8. The metal cutting device for fireproof composite panels according to claim 7, Features: The bracket (250) is connected to an oil box (380), a third pipeline (373) is connected between the first piston cylinder (363) and the oil box (380), and a one-way valve is provided on the third pipeline (373).

9. The metal cutting device for fireproof composite panels according to claim 8, Features: A second pipe (372) is connected between the oil box (380) and the first pipe (371), a micro pump (381) is arranged on the second pipe (372), and a second pressure-sensitive switch is arranged on the contact surface between the second wedge block (340) and the sliding column (211); When the slide column (211) contacts the second pressure-sensitive switch, the cutting mechanism (200) is reset, the solenoid valve is opened, the micro pump (381) is started, and the medium in the arc-shaped hydraulic rod (430) and the second piston cylinder (331) is extracted through the first pipeline (371) and the pitch-adjusting tube (370), so that the reversing mechanism (300) is reset.

10. The metal cutting device for fireproof composite panels according to claim 9, Features: The second wedge block (340) is connected to a round rod (341), the round rod (341) slides axially on the rectangular plate (310), the round rod (341) is sleeved with a third spring (342), and two ends of the third spring (342) are respectively in contact with the second wedge block (340) and the rectangular plate (310).

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