Galvanized coiled plate cutting equipment

Abstract

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting equipment, and particularly relates to a galvanized sheet cutting equipment. BACKGROUND

[0002] The galvanized sheet has excellent corrosion resistance due to the cathodic protection of the zinc layer, and becomes the core material in the fields of automobile manufacturing (body sheet metal, chassis structural parts), home appliance production (air conditioner shell, washing machine panel), building decoration, etc. When the galvanized sheet is cut, a laser cutting equipment is usually used. After the laser is started, the laser beam is focused to a very small point through an optical system. The high energy of the point makes the zinc layer on the surface of the galvanized sheet and the steel sheet itself rapidly melt and evaporate, and then break, so as to achieve the purpose of cutting the galvanized sheet. During the use of the current equipment, there are still many inconveniences. The melting point of the zinc layer on the surface of the galvanized sheet is much lower than that of the steel sheet base material. During laser cutting, the zinc layer will rapidly melt and vaporize before the base material. The vaporized zinc vapor is easy to mix with the molten iron, or to condense on the lower edge of the cut due to the difference in cooling speed, forming a hard "zinc-iron alloy" slag. At the same time, the eruption of zinc vapor will interfere with the normal discharge path of the molten slag, causing burr accumulation. In addition, the evaporated zinc vapor is also corrosive and can combine with impurities in the air to form sticky dust, which may contaminate the laser generator lens, causing laser power fluctuations, mode deterioration, and even causing generator failure. SUMMARY

[0003] The purpose of the present application is to solve the problem that the molten slag and zinc vapor generated during the cutting of the galvanized sheet by the laser cutting equipment in the prior art adversely affect the equipment itself and the cutting quality of the sheet, and a galvanized sheet cutting equipment is provided.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A galvanized sheet cutting equipment, comprising: a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting tooth plate, a slag removal fan and a discharging structure; The cutting structure comprises a cutting seat, a laser cutting head, a split protective cover, an intercepting tooth plate, a slag removal fan and a discharging structure. The cutting seat is internally provided with a air supply structure, and the bottom end of the cutting seat is provided with an electric telescopic rod. The laser cutting head is arranged at the bottom end of the electric telescopic rod, and the outer side of the laser cutting head is sleeved with an annular wind shield. The split protective cover is composed of a plurality of spliced covers. The spliced cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. The intercepting tooth plate is arranged in the conveying structure and is used for intercepting the molten slag falling from the gap of the conveying structure. The slag removal fan is arranged at a position corresponding to the position of the intercepting tooth plate and is used for blowing off the molten slag on the intercepting tooth plate. The discharging structure is matched in shape with the intercepting tooth plate and is used for discharging the material falling on the intercepting tooth plate.

[0005] As a further scheme of the present application, the guide rail structure is mounted on the mounting frame, and the cutting structure is mounted on the guide rail structure, the guide rail structure comprises horizontal guide rails and vertical guide rails for driving the cutting structure to freely move in the horizontal direction.

[0006] As a further scheme of the present application, the inner wind box is arranged on the inner side of the outer cover plate, the inner wall of the inner wind box is slidably connected with the laser cutting head, the bottom end of the inner wind box is sequentially provided with a first arc-shaped air outlet, a second arc-shaped air outlet and a third arc-shaped air outlet from outside to inside, the air outlet direction of the first arc-shaped air outlet is matched with the inner side of the outer cover plate, the second arc-shaped air outlet is provided with two air outlets, one of which is matched with the bottom end of the inner wind box and faces the first arc-shaped air outlet, and the other is matched with the outer wall of the annular air cover, and the third arc-shaped air outlet is slidably inserted into the top end of the annular air cover.

[0007] As a further scheme of the present application, the limiting plate is arranged on the telescopic end of the electric telescopic rod, the limiting spring is arranged between the limiting plate and the inner wind box, one end of the air supply hose is communicated with the top end of the inner wind box, and the other end of the air supply hose extends into the cutting seat through the limiting plate and is communicated with the air supply structure.

[0008] As a further scheme of the present application, the bottom end of the outer cover plate is provided with a rubber strip, the inner side of the outer cover plate is slidably connected with a limiting ring, the inner side of the limiting ring is provided with a plurality of rolling balls, the bottom end of the rolling ball extends out of the bottom end of the outer cover plate, and the top end of the rolling ball is provided with a return spring.

[0009] As a further scheme of the present application, the conveying structure is arranged below the cutting structure, the conveying structure comprises a toothed roller group and a transmission belt sleeved on the toothed roller group, the transmission belt comprises two mounting strips and a plurality of supporting rods arranged between the two mounting strips, the top end of the supporting rod is provided with a plurality of teeth, and the bottom end of the supporting rod is matched in shape with the toothed roller group.

[0010] As a further scheme of the present application, the intercepting toothed plate is arranged on the inner side of the transmission belt, and the top end of the intercepting toothed plate is provided with a plurality of gear racks.

[0011] As a further scheme of the present application, the slag removal fan is arranged on one side of the mounting frame, one end of the slag removal fan is communicated with the outside, and the other end of the slag removal fan is provided with a toothed groove air outlet, the position and shape of the toothed groove air outlet correspond to the position and shape of the intercepting toothed plate.

[0012] As a further scheme of the present application, the discharging structure comprises a lead screw structure and a scraping plate mounted on the lead screw structure, the bottom end of the scraping plate is provided with a plurality of gear racks embedded with the intercepting toothed plate, and the scraping plate and the intercepting toothed plate are slidably connected through the gear racks.

[0013] As a further scheme of the present application, the other side of the mounting frame is provided with a discharging port, and the position of the discharging port corresponds to the position of the intercepting toothed plate.

[0014] Compared with the prior art, the present application has the following advantages: When the present application is used, high-pressure air is blown out from the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, so that the molten slag can be intercepted and the zinc vapor can be adhered to the splicing cover, the annular air cover and the laser cutting head. In addition, the high-pressure air blown out from the bottom end of the annular air cover and the closed space formed by the split protective cover force the air to flow out along the cutting seam, so that the blowing force of the air flow on the lower edge of the cut is enhanced, and the molten slag can be forcibly stripped. When the present application is used, the air flow blown out by the slag removal fan enters the intercepting tooth plate through the tooth groove air outlet, the tooth groove can converge the air flow, enhance the air pressure and flow rate, so that the molten slag converged to the tooth valley of the intercepting tooth plate is easily blown out. In addition, the slag removal fan itself can further cool the molten slag and form a protective air curtain on the intercepting tooth plate to prevent the molten slag from adhering to the intercepting tooth plate. In addition, the lead screw structure in the discharging structure drives the scraping plate to move along the direction of the intercepting tooth plate rack. Since the bottom end of the scraping plate is provided with a plurality of rack teeth embedded with the intercepting tooth plate, the finished product can be pushed out along the intercepting tooth plate, and the surface of the intercepting tooth plate can be scraped to prevent the molten slag from adhering to the intercepting tooth plate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of a galvanized sheet cutting device is provided. Figure 2 A schematic diagram of the cutting structure of a galvanized sheet cutting device is provided. Figure 3 A schematic diagram of a split protective cover of a galvanized sheet cutting device is provided. Figure 4 A schematic diagram of a split protective cover of a galvanized sheet cutting device is provided. Figure 5 A schematic diagram of a galvanized sheet cutting device is provided. Figure 4 An enlarged schematic diagram of position A in the above figure is provided. Figure 6 A schematic diagram of the position of the intercepting tooth plate of a galvanized sheet cutting device is provided. Figure 7 A schematic diagram of the conveying structure of a galvanized sheet cutting device is provided. Figure 8 A schematic diagram of the support rod of a galvanized sheet cutting device is provided. Figure 9 A schematic diagram of the position of the tooth groove air outlet of a galvanized sheet cutting device is provided. Figure 10 A schematic diagram of the discharging structure of a galvanized sheet cutting device is provided.

[0016] In the figure: 1, mounting frame; 101, discharging port; 2, guide rail structure; 3, cutting structure; 301, cutting seat; 302, electric telescopic rod; 303, laser cutting head; 304, ring-shaped wind cover; 305, detachable protective cover; 306, spliced cover; 307, outer cover plate; 308, inner wind box; 309, limiting plate; 310, limiting spring; 311, air feeding hose; 312, first arc-shaped air outlet; 313, second arc-shaped air outlet; 314, third arc-shaped air outlet; 315, limiting ring; 316, ball; 317, return spring; 4, conveying structure; 401, toothed roller set; 402, transmission belt; 403, mounting strip; 404, support rod; 5, intercepting toothed plate; 6, slag removal blower; 601, toothed groove air outlet; 7, discharging structure; 701, lead screw structure; 702, material scraping plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0018] As shown in Figures 1-6 , a galvanized sheet cutting device comprises a mounting frame 1, a guide rail structure 2, a cutting structure 3, a conveying structure 4, an intercepting toothed plate 5, a slag removal blower 6, and a discharging structure 7. As shown in Figures 2-5 , the cutting structure 3 comprises a cutting seat 301, a laser cutting head 303, a detachable protective cover 305, the intercepting toothed plate 5, the slag removal blower 6, and the discharging structure 7. The cutting seat 301 is internally provided with an air feeding structure. The bottom end of the cutting seat 301 is provided with an electric telescopic rod 302. The laser cutting head 303 is arranged at the bottom end of the electric telescopic rod 302. The laser cutting head 303 is externally sleeved with a ring-shaped wind cover 304. The detachable protective cover 305 is spliced by a plurality of spliced covers 306. The spliced cover 306 comprises an outer cover plate 307, an inner wind box 308, a limiting plate 309, a limiting spring 310, and an air feeding hose 311. The intercepting toothed plate 5 is located inside the conveying structure 4, used for intercepting molten slag falling from the gap of the conveying structure 4. The slag removal blower 6 is located in a position corresponding to the position of the intercepting toothed plate 5, used for blowing off the molten slag on the intercepting toothed plate 5. The discharging structure 7 is shaped to match the shape of the intercepting toothed plate 5, used for discharging the material falling on the intercepting toothed plate 5. When the application is used, the galvanized sheet is first placed on the conveying structure 4. When the conveying structure 4 is started, the galvanized sheet is driven by the conveying structure 4 and gradually occupies the top space of the transmission belt 402 in the conveying structure 4. Then the guide rail structure 2 drives the cutting structure 3 to reach the pre-cutting position. The electric telescopic rod 302 drives the laser cutting head 303 and the detachable protective cover 305 to descend, so that the detachable protective cover 305 abuts against the top end of the galvanized sheet to form a closed space. Then the laser cutting head 303 cuts the galvanized sheet. During cutting, the slag falls through the spacing of the supporting rod 404 to the tooth valley of the intercepting tooth plate 5 and is blown out of the discharge opening 101 by the slag removal fan 6. After cutting, the finished product (which may also be waste material according to different processing requirements) also falls through the spacing of the supporting rod 404 to the intercepting tooth plate 5, and finally is pushed out of the discharge opening 101 by the discharging structure 7 along the intercepting tooth plate 5.

[0019] As shown in Figure 1 , the guide rail structure 2 is installed on the mounting frame 1, and the cutting structure 3 is installed on the guide rail structure 2. The guide rail structure 2 includes horizontal guide rails and vertical guide rails for driving the cutting structure 3 to move freely in the horizontal direction.

[0020] As shown in Figure 4 and Figure 5 , the inner air box 308 is arranged on the inner side of the outer cover plate 307. The inner wall of the inner air box 308 is slidably connected with the laser cutting head 303. The bottom end of the inner air box 308 is sequentially provided with a first arc-shaped air outlet 312, a second arc-shaped air outlet 313 and a third arc-shaped air outlet 314 from outside to inside. The air outlet direction of the first arc-shaped air outlet 312 is fitted to the inner side of the outer cover plate 307. The second arc-shaped air outlet 313 is provided with two air outlets, one of which is fitted to the bottom end of the inner air box 308 and faces the first arc-shaped air outlet 312, and the other is fitted to the outer wall of the annular air cover 304. The third arc-shaped air outlet 314 extends into the top end of the annular air cover 304 and is slidably connected with the annular air cover 304.

[0021] When the application is used, high-pressure air enters the inner air box 308 from the air supply structure (the air supply structure is composed of a high-pressure air pump arranged inside the cutting seat 301, the outlet of the high-pressure air pump is connected to each air supply hose through a flow divider, and further preferably, the outlet pressure of the high-pressure air pump can be adjusted within the range of 0.5 MPa to 0.8 MPa), and is discharged from the first arc-shaped air outlet 312, the second arc-shaped air outlet 313, and the third arc-shaped air outlet 314. The air outlet of the first arc-shaped air outlet 312 blows high-pressure air to form a protective air curtain inside the outer cover plate 307. The two air outlets of the second arc-shaped air outlet 313 blow high-pressure air to form protective air curtains on the outer wall of the annular air cover 304 at the bottom end of the inner air box 308. The air outlet of the third arc-shaped air outlet 314 sends high-pressure air into the annular air cover 304, so that the high-pressure air is finally sprayed from the bottom end of the annular air cover 304 around the laser cutting head 303 to form a protective air curtain for the laser cutting head 303. These protective air curtains can prevent molten slag from splashing and being intercepted, and zinc vapor from adhering to the splicing cover 306, the annular air cover 304, and the laser cutting head 303. In addition, the high-pressure air sprayed from the bottom end of the annular air cover 304, and the closed space formed by the separate protective cover 305, force air to be discharged along the cutting seam, so that the blowing force of the air flow on the lower edge of the cut increases, and the molten slag can be forcibly stripped. The separate protective cover and the multi-air outlet air curtain formed by the overall device can significantly improve the adaptability to uneven coil plate surfaces and ensure the airtightness of the cutting area, thereby effectively solving the problems of zinc vapor escaping and molten slag splashing caused by poor sealing.

[0022] As shown in Figure 2 and Figure 3 , the limiting plate 309 is arranged on the telescopic end of the electric telescopic rod 302, the limiting spring 310 is arranged between the limiting plate 309 and the inner air box 308, one end of the air supply hose 311 communicates with the top end of the inner air box 308, and the other end extends into the cutting seat 301 through the limiting plate 309 and communicates with the air supply structure.

[0023] As shown in Figure 4 , the bottom end of the outer cover plate 307 is provided with a rubber strip, the inner part of the outer cover plate 307 is slidingly connected with a limiting ring 315, the inner part of the limiting ring 315 is installed with a ball 316, the bottom end of the ball 316 extends out of the bottom end of the outer cover plate 307, and the top end of the ball 316 is installed with a return spring 317.

[0024] When the electric telescopic rod 302 is stretched, the limiting plate 309 drives the inner air box 308 through the limiting spring 310, and then drives the outer cover plate 307 to move downward, that is, the separated protective cover 305 is lowered with the stretching of the electric telescopic rod 302. During the preparation of the equipment for cutting, the bottom end of the outer cover plate 307 first contacts the galvanized sheet, at which time the ball 316 is extruded, driving the limiting ring 315 to move upward and compressing the return spring 317, so that the high-temperature-resistant rubber strip at the bottom end of the outer cover plate 307 is attached to the top surface of the galvanized sheet. The separated protective cover 305 is assembled by a plurality of spliced covers 306, so it can better adapt to the uneven surface of the galvanized sheet, and the separated protective cover 305 is more attached to the surface of the galvanized sheet than the traditional integral protective cover. The ball 316 is provided to facilitate the sliding of the separated protective cover 305 on the surface of the galvanized sheet during the movement of the laser cutting head 303 or when the laser cutting head 303 jumps to the next cutting position after cutting at a position.

[0025] As shown in Figure 7 and Figure 8 , the conveying structure 4 is arranged below the cutting structure 3, and the conveying structure 4 comprises a toothed roller set 401 and a transmission belt 402 sleeved on the toothed roller set 401. The transmission belt 402 comprises two mounting strips 403 and a plurality of support rods 404 arranged at intervals between the two mounting strips 403. The top end of the support rod 404 is provided with a plurality of tines, and the bottom end of the support rod 404 is matched in shape with the toothed roller set 401.

[0026] As shown in Figure 6 and Figure 9 , the intercepting toothed plate 5 is arranged on the inner side of the transmission belt 402, and the top end of the intercepting toothed plate 5 is provided with a plurality of gear racks. So that the molten slag falling from the support rods 404 is easily accumulated in the valleys of the intercepting toothed plate 5.

[0027] As shown in Figure 1 and Figure 6 , the slag removal fan 6 is arranged on one side of the mounting rack 1, and one end thereof is in communication with the outside, and the other end is provided with a toothed groove air outlet 601. The position and shape of the toothed groove air outlet 601 correspond to those of the intercepting toothed plate 5.

[0028] When the present application is used, the airflow blown by the slag removal fan 6 enters the intercepting toothed plate 5 through the toothed groove air outlet 601. The toothed groove can converge the airflow, enhance the air pressure and flow rate, so that the molten slag accumulated in the valleys of the intercepting toothed plate 5 is easily blown out. In addition, the slag removal fan 6 itself can further cool the molten slag and form a protective air curtain on the intercepting toothed plate 5 to prevent the molten slag from sticking to the intercepting toothed plate 5.

[0029] As Figure 9 and Figure 10 shown, the blanking structure 7 includes a lead screw structure 701 and a scraping plate 702 mounted on the lead screw structure 701, the bottom end of the scraping plate 702 is provided with a plurality of rack gears embedded with the intercepting tooth plate 5, and the scraping plate 702 is slidably connected with the intercepting tooth plate 5 through the rack gears.

[0030] In this application, the lead screw structure 701 in the blanking structure 7 drives the scraping plate 702 to move along the direction of the rack gears of the intercepting tooth plate 5. Since the bottom end of the scraping plate 702 is provided with a plurality of rack gears embedded with the intercepting tooth plate 5, not only the finished parts can be pushed out along the intercepting tooth plate 5, but also the surface of the intercepting tooth plate 5 can be scraped to prevent the molten slag from being bonded on the intercepting tooth plate 5.

[0031] As Figure 9 shown, the other side of the mounting frame 1 is provided with a blanking port 101, and the position of the blanking port 101 corresponds to the position of the intercepting tooth plate 5.

[0032] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A galvanized sheet cutting device, characterized in that, include: Mounting frame (1), guide rail structure (2), cutting structure (3), conveying structure (4), intercepting toothed plate (5), slag cleaning fan (6), and unloading structure (7); The cutting structure (3) includes: A cutting seat (301) is provided with an air supply structure inside, and an electric telescopic rod (302) is provided at the bottom end of the cutting seat (301). A laser cutting head (303) is provided at the bottom end of an electric telescopic rod (302), and an annular shroud (304) is sleeved on the outside of the laser cutting head (303). The split protective cover (305) is composed of multiple splicing covers (306), and the splicing cover (306) includes: an outer cover plate (307), an inner air box (308), a limiting plate (309), a limiting spring (310), and an air supply hose (311). The intercepting toothed plate (5) is located inside the conveying structure (4) and is used to intercept molten slag falling from the gaps in the conveying structure (4); The position of the slag removal fan (6) corresponds to the position of the intercepting toothed plate (5) and is used to blow off the molten slag on the intercepting toothed plate (5); The shape of the feeding structure (7) matches the shape of the intercepting tooth plate (5) and is used to feed the material that falls onto the intercepting tooth plate (5).

2. The galvanized sheet cutting equipment according to claim 1, characterized in that, The guide rail structure (2) is mounted on the mounting bracket (1), and the cutting structure (3) is mounted on the guide rail structure (2). The guide rail structure (2) includes a horizontal guide rail and a vertical guide rail, which are used to drive the cutting structure (3) to move freely in the horizontal direction.

3. The galvanized sheet cutting equipment according to claim 1, characterized in that, The inner air box (308) is located inside the outer cover plate (307). The inner wall of the inner air box (308) is slidably connected to the laser cutting head (303). The bottom end of the inner air box (308) is provided with a first arc-shaped exhaust port (312), a second arc-shaped exhaust port (313) and a third arc-shaped exhaust port (314) from the outside to the inside. The air outlet direction of the first arc-shaped exhaust port (312) is close to the inner side of the outer cover plate (307). The second arc-shaped exhaust port (313) has two air outlets. One air outlet is close to the bottom end of the inner air box (308) and faces the first arc-shaped exhaust port (312). The other air outlet is close to the outer wall of the annular hood (304). The third arc-shaped exhaust port (314) extends into the top of the annular hood (304) and is slidably inserted into the annular hood (304).

4. The galvanized sheet cutting equipment according to claim 1, characterized in that, The limiting plate (309) is set on the telescopic end of the electric telescopic rod (302), the limiting spring (310) is set between the limiting plate (309) and the inner air box (308), one end of the air supply hose (311) is connected to the top of the inner air box (308), and the other end is inserted through the limiting plate (309) and extends into the interior of the cutting seat (301) to communicate with the air supply structure.

5. The galvanized sheet cutting equipment according to claim 1, characterized in that, A rubber strip is provided at the bottom end of the outer cover plate (307). A limit ring (315) is slidably connected inside the outer cover plate (307). A ball (316) is installed inside the limit ring (315). The bottom end of the ball (316) extends out of the bottom end of the outer cover plate (307). A return spring (317) is installed at the top end of the ball (316).

6. The galvanized sheet cutting equipment according to claim 1, characterized in that, The conveying structure (4) is located below the cutting structure (3). The conveying structure (4) includes a toothed roller group (401) and a transmission belt (402) sleeved on the toothed roller group (401). The transmission belt (402) includes two mounting strips (403) and multiple support rods (404) spaced between the two mounting strips (403). The top of the support rod (404) is provided with multiple sharp teeth, and the bottom of the support rod (404) matches the shape of the toothed roller group (401).

7. The galvanized sheet cutting equipment according to claim 1, characterized in that, The intercepting toothed plate (5) is disposed on the inner side of the transmission belt (402), and the top of the intercepting toothed plate (5) is provided with multiple toothed racks.

8. The galvanized steel coil cutting equipment according to claim 1, characterized in that, The slag removal fan (6) is set on one side of the mounting frame (1), with one end connected to the outside and the other end having a toothed air outlet (601). The position and shape of the toothed air outlet (601) correspond to the position and shape of the intercepting tooth plate (5).

9. A galvanized sheet cutting device according to claim 1, characterized in that, The feeding structure (7) includes a lead screw structure (701) and a scraper (702) mounted on the lead screw structure (701). The bottom end of the scraper (702) is provided with a plurality of racks that engage with the intercepting toothed plate (5). The scraper (702) and the intercepting toothed plate (5) are slidably connected by the racks.

10. A galvanized sheet cutting device according to claim 1, characterized in that, The mounting bracket (1) has a discharge port (101) on the other side, and the position of the discharge port (101) corresponds to the position of the intercepting tooth plate (5).

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