Metal wire frame plasma cutting device

Abstract

The application provides a metal wiring frame plasma cutting device, and belongs to the technical field of metal wiring frame processing. The device comprises a cutting table, a first driving assembly, a plasma cutting gun, a polishing assembly and a second driving assembly. The upper part of the cutting table is provided with a feeding mechanism for feeding metal plates. Two groups of support plates are fixedly arranged on the upper edge of the cutting table and are distributed left and right. The plasma cutting gun is arranged between the two groups of support plates. The first driving assembly is installed on the side wall of the support plate and drives the plasma cutting gun to move back and forth to cut the metal plate. Compared with the prior art, the embodiment of the application can realize continuous automatic cutting of the metal plate, and can polish and remove the slag on the cutting seam, so as to ensure that the edge of the cut metal plate is flat and improve the cutting quality.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metal wiring rack processing, and particularly relates to a metal wiring rack plasma cutting device. BACKGROUND

[0002] The wiring rack is generally installed in a computer room and hoisted on the top of the computer room, and is used for laying optical fibers or electric wires.

[0003] At present, when the metal wiring rack is processed, the metal plate is cut into a plurality of metal strips, and then the metal strips are punched into a U-shaped structure by means of a punching equipment. The metal strip with the U-shaped structure is used as the frame body of the wiring rack, has the advantages of light weight and high strength. In the prior art, the cutting of the metal plate is mostly realized by using a plasma cutting device. The plasma cutting device is a kind of processing equipment that uses the heat of a high-temperature plasma arc to melt and evaporate the metal part or local part at the cutting gap of a workpiece, and removes the molten metal by the momentum of a high-speed plasma to form a cutting gap. However, when the metal plate is cut by the plasma, the slag generated will be distributed on the side wall of the cutting gap and the upper and lower positions of the cutting gap, so that the edge of the metal strip after cutting is not smooth and flat enough, and then the cutting quality is affected. SUMMARY

[0004] In view of the above problems in the prior art, the technical problem to be solved by the embodiments of the present application is to provide a metal wiring rack plasma cutting device.

[0005] To solve the above technical problems, the present application provides the following technical scheme:

[0006] A metal wiring rack plasma cutting device, comprising a cutting table, a first driving assembly, a plasma cutting gun, a polishing assembly and a second driving assembly,

[0007] A feeding mechanism is arranged on the upper part of the cutting table, and the feeding mechanism is used for conveying the metal plate,

[0008] Two groups of support plates are fixedly arranged on the edge of the upper part of the cutting table, and the two groups of support plates are distributed left and right opposite to each other,

[0009] The plasma cutting gun is arranged between the two groups of support plates, the first driving assembly is installed on the side wall of the support plate, and is used for driving the plasma cutting gun to move back and forth to cut the metal plate,

[0010] The polishing assembly is arranged beside the plasma cutting gun, and is used for polishing the cutting gap of the metal plate when the plasma cutting gun cuts the metal plate,

[0011] The second driving assembly is provided with two groups, and the two groups of second driving assemblies are respectively installed on the side walls of the two groups of support plates.

[0012] As a further improved aspect of the present application, the first driving assembly comprises a first motor, a lead screw, a guide rod, a first sliding sleeve, a support rod and a second sliding sleeve,

[0013] The support rod is vertically arranged between the two groups of support plates, and the plasma cutting torch is fixedly installed at the bottom of the support rod.

[0014] The guide rod is fixedly arranged between the two groups of support plates, and the guide rod penetrates through the first sliding sleeve and is in sliding cooperation with the first sliding sleeve.

[0015] As a further improved aspect of the present application, the polishing assembly comprises a first connecting rod, a protective box, a first polishing disc, a polishing rod and a second polishing disc,

[0016] The first polishing disc and the second polishing disc are arranged in a vertical manner, the polishing rod is fixedly arranged at the center between the first polishing disc and the second polishing disc, one end of the first connecting rod is connected with the support rod, and the other end is fixedly connected with the protective box.

[0017] As a further improved aspect of the present application, the polishing assembly further comprises a rotating drum and a gear, the rotating drum is rotatably arranged outside the support rod, the gear is fixedly arranged outside the rotating drum, and one end of the first connecting rod away from the protective box is fixedly connected with the rotating drum.

[0018] The second driving assembly comprises a support strip, an oblique toothed piece and a second elastic member,

[0019] The support strip is fixedly arranged on the side wall of the support plate, the oblique toothed piece is provided with a plurality of groups, the plurality of oblique toothed pieces are hingedly arranged on the side wall of the support strip and are sequentially and spacedly arranged along the length direction of the support strip, one side of each group of oblique toothed pieces is connected with the support strip through a group of second elastic members, and the second elastic member is used for providing elastic support for the oblique toothed piece.

[0020] As a further improvement of the present application: the polishing assembly further comprises a V-shaped limiting rod, a second connecting rod and a sliding sleeve,

[0021] The sliding sleeve is slidably arranged outside the supporting rod, the V-shaped limiting rod is provided with two groups, the two groups of V-shaped limiting rods are respectively hingedly arranged on the left and right sides of the supporting rod, the lower ends of the two groups of V-shaped limiting rods extend to between adjacent teeth of the gear, the upper ends of the two groups of V-shaped limiting rods are respectively hingedly provided with a group of second connecting rods, and the upper ends of the two groups of second connecting rods are respectively hingedly connected with the sliding sleeve,

[0022] The two groups of supporting plates are respectively provided with a guide sleeve on the side wall, a top rod is movably arranged in the inner part of the end of the guide sleeve away from the corresponding supporting plate, a ring block is fixedly arranged outside the top rod, the ring block and the guide sleeve are connected through a first elastic piece, and the first elastic piece is used to provide elastic support for the top rod.

[0023] As a further improvement of the present application: the cutting table is further provided with a clamping assembly, and the clamping assembly is used for clamping the metal strip.

[0024] As a further improvement of the present application: the clamping assembly comprises a hydraulic cylinder and a clamping plate,

[0025] The hydraulic cylinder is provided with two groups, the two groups of hydraulic cylinders are fixedly installed on the cutting table and are distributed in left and right opposition, and the output ends of the two groups of hydraulic cylinders are provided with a group of clamping plates.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] Compared with the prior art, the present application can realize continuous automatic cutting of the metal plate, and can polish and remove the slag on the cutting seam, so as to ensure that the edge of the cut metal plate is flat, thereby improving the cutting quality. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic diagram of a metal wiring frame plasma cutting device Figure 1 ;

[0029] Figure 2 It is a structure schematic diagram of a metal wiring frame plasma cutting device Figure 2 ;

[0030] Figure 3 It is Figure 1 an enlarged schematic view of area A in the figure;

[0031] Figure 4 It is Figure 1 an enlarged schematic view of area B in the figure;

[0032] Figure 5 For Figure 1 Amplified schematic view of the middle C area;

[0033] In the figure: 10 - cutting table, 101 - support plate, 102 - guide sleeve, 103 - first elastic piece, 104 - ring block, 105 - ejector rod, 20 - first driving assembly, 201 - first motor, 202 - lead screw, 203 - guide rod, 204 - first sliding sleeve, 205 - support rod, 206 - second sliding sleeve, 30 - plasma cutting gun, 40 - polishing assembly, 401 - first connecting rod, 402 - protection box, 403 - first polishing disc, 404 - polishing rod, 405 - second polishing disc, 406 - rotating drum, 407 - V-shaped limiting rod, 408 - second connecting rod, 409 - sliding sleeve, 410 - gear, 50 - second driving assembly, 501 - support strip, 502 - helical tooth, 503 - second elastic piece, 60 - clamping assembly, 601 - hydraulic cylinder, 602 - clamping plate. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0035] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0036] Please refer to Figure 1 and Figure 2The embodiment provides a metal wiring frame plasma cutting device, which comprises a cutting table 10, a first driving assembly 20, a plasma cutting gun 30, a polishing assembly 40 and a second driving assembly 50. The upper part of the cutting table 10 is provided with a feeding mechanism (not shown in the figure), which is used for feeding metal plates. The upper edge of the cutting table 10 is fixedly provided with two groups of support plates 101, which are distributed in left and right opposition. The plasma cutting gun 30 is arranged between the two groups of support plates 101. The first driving assembly 20 is installed on the side wall of the support plate 101 and is used for driving the plasma cutting gun 30 to move back and forth so as to cut metal plates. The polishing assembly 40 is arranged on the side of the plasma cutting gun 30. When the plasma cutting gun 30 cuts metal plates, the polishing assembly 40 is used for polishing the cutting seam of the metal plates. The second driving assembly 50 is provided with two groups, and the two groups of second driving assemblies 50 are respectively installed on the side walls of the two groups of support plates 101. After the plasma cutting gun 30 cuts metal plates, the second driving assembly 50 is used for driving the polishing assembly 40 to rotate 180° around the plasma cutting gun 30.

[0037] Initially, the plasma cutting gun 30 is positioned near the right support plate 101, and the grinding assembly 40 is located to the right of the plasma cutting gun 30. When continuous cutting of a metal sheet is required, the metal sheet can be placed on the upper part of the cutting table 10, and then the feeding mechanism conveys the metal sheet a predetermined distance toward the plasma cutting gun 30. Then, the first drive assembly 20 drives the plasma cutting gun 30 and the grinding assembly 40 to move synchronously to the left. When the plasma cutting gun 30 moves to the left, it cuts the metal sheet, and when the grinding assembly 40 moves to the left, it grinds the cut seam generated during the cutting process, keeping the cut seam of the metal sheet flat. When the plasma cutting gun 30 moves to the left and is close to the left support plate 101, the plasma cutting gun 30 completes one cut. At this time, the second drive assembly 50 located on the side wall of the left support plate 101 drives the grinding assembly 40 to rotate 180° around the plasma cutting gun 30, so that the grinding assembly 40 is located to the left of the plasma cutting gun 30. Then, the feeding mechanism again grinds the metal sheet. The metal sheet is continuously conveyed a predetermined distance. Then, the first drive assembly 20 drives the plasma cutting gun 30 and the grinding assembly 40 to move to the right. As the plasma cutting gun 30 moves to the right, it cuts the subsequent metal sheet again, and the grinding assembly 40 grinds the resulting cut seam. When the plasma cutting gun 30 moves to a position close to the right support plate 101, it completes a secondary cut. At this time, the second drive assembly 50 on the side wall of the right support plate 101 drives the grinding assembly 40 to rotate 180° around the plasma cutting gun 30 again, so that the grinding assembly 40 is once again located to the right of the plasma cutting gun 30. Then, the feeding mechanism conveys the subsequent metal sheet a predetermined distance again, and the first drive assembly 20 drives the plasma cutting gun 30 and the grinding assembly 40 to move to the left again... This cycle repeats, enabling continuous cutting of the metal sheet and grinding away the slag on the cut seam, thus ensuring that the edges of the cut metal sheet remain flat and improving the cutting quality.

[0038] Please see Figure 1In one embodiment, the first drive assembly 20 includes a first motor 201, a lead screw 202, a guide rod 203, a first sliding sleeve 204, a support rod 205, and a second sliding sleeve 206. The support rod 205 is disposed between two sets of support plates 101 and is vertically distributed. The plasma cutting gun 30 is fixedly installed at the bottom of the support rod 205. The first sliding sleeve 204 and the second sliding sleeve 206 are respectively fixedly installed on opposite side walls of the support rod 205. The guide rod 203 is fixedly disposed between the two sets of support plates 101. The guide rod 203 passes through the first sliding sleeve 204 and is slidably engaged with the first sliding sleeve 204. The lead screw 202 is rotatably installed between the two sets of support plates 101. The lead screw 202 passes through the second sliding sleeve 206 and is threadedly engaged with the second sliding sleeve 206. The first motor 201 is fixedly installed on the side wall of one set of support plates 101 and is used to drive the lead screw 202 to rotate.

[0039] The first motor 201 drives the lead screw 202 to rotate forward. When the lead screw 202 rotates forward, the threaded engagement between the lead screw 202 and the second sliding sleeve 206, and the sliding engagement between the first sliding sleeve 204 and the guide rod 203, can drive the support rod 205 to move to the left. When the support rod 205 moves to the left, it drives the plasma cutting gun 30 to move to the left simultaneously, thereby performing a first cut on the metal sheet. When the plasma cutting gun 30 moves to the left and is close to the left support plate 101, the feeding mechanism conveys the subsequent metal sheet a predetermined distance. Then, the first motor 201 drives the lead screw 202 to rotate in the opposite direction. When the lead screw 202 rotates in the opposite direction, the reverse threaded engagement between the lead screw 202 and the second sliding sleeve 206, and the reverse sliding engagement between the first sliding sleeve 204 and the guide rod 203, can drive the support rod 205 to move to the right. The support rod 205 drives the plasma cutting gun 30 to move to the right simultaneously, thereby performing a second cut on the metal sheet.

[0040] Please see Figure 4 In one embodiment, the polishing assembly 40 includes a first connecting rod 401, a protective box 402, a first polishing disc 403, a polishing rod 404, and a second polishing disc 405. The first polishing disc 403 and the second polishing disc 405 are arranged vertically. The polishing rod 404 is fixedly disposed at the center position between the first polishing disc 403 and the second polishing disc 405. One end of the first connecting rod 401 is connected to the support rod 205, and the other end is fixedly connected to the protective box 402. A second motor (not shown in the figure) is disposed inside the protective box 402, and the output shaft of the second motor is connected to the first polishing disc 403.

[0041] When the first motor 201 drives the lead screw 202 to rotate in the forward direction, thereby driving the support rod 205 and the plasma cutting gun 30 to move to the left, the support rod 205 drives the first connecting rod 401, the protective box 402, the second motor, the first grinding disc 403, the grinding rod 404, and the second grinding disc 405 to move to the left as a whole. After the plasma cutting gun 30 cuts a kerf in the metal sheet, the grinding rod 404 moves into the kerf and acts on the two side walls of the kerf. The grinding disc 405 moves to the upper and lower sides of the metal sheet and comes into contact with the upper and lower side walls of the metal sheet. At this time, the second motor drives the first grinding disc 403, the grinding rod 404 and the second grinding disc 405 to rotate synchronously. When the first grinding disc 403 rotates, it grinds and removes the slag protruding above the cutting seam. When the grinding rod 404 rotates, it grinds and removes the slag protruding on the two side walls of the cutting seam. When the second grinding disc 405 rotates, it grinds and removes the slag protruding below the cutting seam.

[0042] Please see Figure 3 In one embodiment, the grinding assembly 40 further includes a rotating cylinder 406 and a gear 410. The rotating cylinder 406 is rotatably disposed outside the support rod 205, and the gear 410 is fixedly disposed outside the rotating cylinder 406. The end of the first connecting rod 401 away from the protective box 402 is fixedly connected to the rotating cylinder 406. The second driving assembly 50 includes a support bar 501, helical gears 502, and a second elastic element 503. The support bar 501 is fixedly disposed on the side wall of the support plate 101. Several groups of helical gears 502 are provided, and several helical gears 502 are hinged to the side wall of the support bar 501 and distributed sequentially at intervals along the length direction of the support bar 501. Each group of helical gears 502 is connected to the support bar 501 on one side through a group of second elastic elements 503. The second elastic elements 503 are used to provide elastic support for the helical gears 502.

[0043] When motor 201 drives lead screw 202 to rotate forward, thereby moving support rod 205, plasma cutting gun 30, first grinding disc 403, grinding rod 404, and second grinding disc 405 to a position close to the left support plate 101, plasma cutting gun 30 completes cutting of the metal sheet. First grinding disc 403, grinding rod 404, and second grinding disc 405 move to the left side of the metal sheet. At this time, gear 410 acts on several helical gears 502 on the side wall of left support bar 501, and is pushed by these helical gears 502 to rotate drum 406 180° relative to support rod 205. When drum 205 rotates 180°, it drives protective box 402 and second motor via first connecting rod 401. The first grinding disc 403, grinding rod 404, and second grinding disc 405 rotate 180° around the plasma cutting gun 30, causing them to rotate to the left side of the plasma cutting gun 30. When the plasma cutting gun 30 subsequently moves to the right, the first grinding disc 403, grinding rod 404, and second grinding disc 405, now rotated to the left side of the plasma cutting gun 30, move synchronously to the right. At this time, the grinding rod 404 moves into the cutting kerf and acts on the two sidewalls of the cutting kerf. The first grinding disc 403 and second grinding disc 405 move to the upper and lower sides of the metal sheet, respectively, and come into contact with the upper and lower sidewalls of the metal sheet. This allows for further grinding of the subsequent cut seam; when the plasma cutting gun 30 and support rod 205 move to the right, the gear 410 acts in the opposite direction on several helical gears 502, thereby pushing several helical gears 502 to deflect sequentially towards the support bar 501. The helical gears 502 cannot push the gear 410, thus failing to drive the rotating drum 406 to rotate, and consequently failing to drive the first grinding disc 403, grinding rod 404, and second grinding disc 405 to rotate around the support rod 205; when the plasma cutting gun 30, first grinding disc 403, grinding rod 404, and second grinding disc 405 move to a position close to the right support plate 101, the plasma cutting gun 30 cuts the metal sheet. After cutting is completed, the first grinding disc 403, grinding rod 404, and second grinding disc 405 move to the right side of the metal sheet. At this time, the gear 410 acts on several helical teeth 502 on the side wall of the right support bar 501, and is pushed by several helical teeth 502 to drive the rotating drum 406 to rotate 180° relative to the support rod 205 again. When the rotating drum 205 rotates 180°, it drives the protective box 402, the second motor, the first grinding disc 403, the grinding rod 404, and the second grinding disc 405 to rotate 180° around the plasma cutting gun 30 as a whole through the first connecting rod 401, so that the first grinding disc 403, the grinding rod 404, and the second grinding disc 405 rotate back to the right side of the plasma cutting gun 30.

[0044] Please see Figure 3 as well as Figure 5In one embodiment, the grinding assembly 40 further includes a V-shaped limiting rod 407, a second connecting rod 408, and a sliding sleeve 409. The sliding sleeve 409 is slidably sleeved on the outside of the support rod 205. Two sets of V-shaped limiting rods 407 are provided, with each set hinged to the left and right sides of the support rod 205. The lower ends of the two sets of V-shaped limiting rods 407 extend to between adjacent teeth of the gear 410, and a second connecting rod 408 is hinged to the upper ends of each set of V-shaped limiting rods 407. 08. The upper ends of the two sets of second connecting rods 408 are respectively hinged to the sliding sleeves 409. Guide sleeves 102 are fixedly provided on the side walls of the two sets of support plates 101. A top rod 105 is movably inserted into the end of the guide sleeve 102 away from the corresponding support plate 101. A ring block 104 is fixedly provided on the outside of the top rod 105. The ring block 104 and the guide sleeve 102 are connected by a first elastic element 103. The first elastic element 103 is used to provide elastic support for the top rod 105.

[0045] During the grinding process of the first grinding disc 403, grinding rod 404, and second grinding disc 405 on the cutting seam, the lower ends of the two sets of V-shaped limiting rods 407 extend to the space between adjacent teeth of the gear 410, thereby limiting the rotation of the rotating cylinder 406. This allows the first grinding disc 403, grinding rod 404, and second grinding disc 405 to stably grind the cutting seam. After the plasma cutting gun 30 moves to the left and finishes cutting the metal sheet, the plasma cutting gun 30 moves to a position close to the left support plate 101. At this time, the upper end of the V-shaped limiting rod 407 on the left side wall of the support rod 205 acts on the left support plate 101. The push rod 105 on the support plate 101 pushes the left V-shaped limiting rod 407, causing the left V-shaped limiting rod 407 to rotate relative to the support rod 205. When the left V-shaped limiting rod 407 rotates, its lower end rotates out from between the adjacent teeth of the gear 410, while its upper end pushes the sliding sleeve 409 through the corresponding second connecting rod 408, causing the sliding sleeve 409 to slide upward along the outside of the support rod 205. When the sliding sleeve 409 slides upward, it pulls the right V-shaped limiting rod 407 through the right second connecting rod 408, causing the right V-shaped limiting rod 407 to rotate relative to the support rod 205. This causes the lower end of the right V-shaped limiting rod 407 to synchronously rotate out from between the adjacent teeth of the gear 410. The gear 410 rotates out between adjacent teeth, thereby releasing the rotation restriction of the rotating drum 406. After the rotation restriction of the rotating drum 406 is released, the gear 410 acts on several helical teeth 502 on the side wall of the left support bar 501, thereby driving the rotating drum 410, the first connecting rod 401, the protective box 402, the first grinding disc 403, the grinding rod 404, and the second grinding disc 405 to rotate 180° around the plasma cutting gun 30. This causes the first grinding disc 403, the grinding rod 404, and the second grinding disc 405 to rotate to the left side of the plasma cutting gun 30. During this process, the left push rod 105 is pushed and moves into the left guide sleeve 102. When the plasma cutting gun 30 moves to the right and finishes cutting the metal sheet, the top rod 105 on the side wall of the right support plate 101 can also push the right V-shaped limiting rod 407. The lower end of the right V-shaped limiting rod 407 rotates out from between the adjacent teeth of the gear 410, and the upper end pushes the sliding sleeve 409 to slide upward along the outside of the support rod 205 through the right second connecting rod 408. The sliding sleeve 409 pulls the left V-shaped limiting rod 407 to rotate through the left second connecting rod 408. The lower end of the left V-shaped limiting rod 407 rotates out from a certain adjacent tooth of the gear 410, thereby releasing the rotation restriction of the rotating drum 406.

[0046] In one embodiment, the first elastic element 103 and the second elastic element 503 can be springs or metal sheets, and there is no limitation here.

[0047] After the plasma cutting gun 30 cuts the metal sheet, the grinding rod 404 remains in the cut kerf. Since there is no longer a connection between the remaining metal sheet and the broken metal strip, the rotation of the grinding rod 404, the first grinding disc 403, and the second grinding disc 405 can easily cause the broken metal strip to wobble, thus affecting the grinding effect on the remaining part of the cut kerf. Therefore, please refer to [further details needed]. Figure 1 In one embodiment, the cutting table 10 is further provided with a clamping assembly 60, which is used to clamp the metal strip so that the metal strip remains stable after being separated from the subsequent metal sheet, thereby ensuring the grinding effect of the remaining cutting seam.

[0048] Please see Figure 1 In one embodiment, the clamping assembly 60 includes a hydraulic cylinder 601 and a clamping plate 602. The hydraulic cylinder 601 is provided in two sets, and the two sets of hydraulic cylinder 601 are fixedly installed on the cutting table 10 and distributed in a left-right opposite manner. Each set of hydraulic cylinder 601 has a clamping plate 602 at its output end.

[0049] During the grinding process of the grinding rod 404, the first grinding disc 403, and the second grinding disc 405 on the cutting seam, the two sets of hydraulic cylinders 601 drive the two sets of clamping plates 602 to move towards each other, thereby clamping the metal strip and keeping it stable after the metal sheet is broken. After the grinding rod 404, the first grinding disc 403, and the second grinding disc 405 have finished grinding the cutting seam, the two sets of hydraulic cylinders 601 drive the two sets of clamping plates 602 to move away from each other, so as to release the clamped metal strip. At this time, the metal strip falls off from one end of the cutting table 10 by itself.

[0050] In one embodiment, the feeding mechanism may be a plurality of feeding rollers installed on the upper part of the cutting table 10, or other structures with feeding functions, which are not limited here.

[0051] In this embodiment of the invention, initially, the plasma cutting gun 30 is positioned near the right support plate 101, and the grinding assembly 40 is located to the right of the plasma cutting gun 30. When continuous cutting of a metal sheet is required, the metal sheet can be placed on the upper part of the cutting table 10, and then the feeding mechanism conveys the metal sheet a predetermined distance toward the plasma cutting gun 30. Then, the first drive assembly 20 drives the plasma cutting gun 30 and the grinding assembly 40 to move synchronously to the left. When the plasma cutting gun 30 moves to the left, it cuts the metal sheet, and when the grinding assembly 40 moves to the left, it grinds the cut seam generated during the cutting process, so that the cut seam of the metal sheet remains flat. When the plasma cutting gun 30 moves to the position near the left support plate 101, the plasma cutting gun 30 completes one cut. At this time, the second drive assembly 50 located on the side wall of the left support plate 101 drives the grinding assembly 40 to rotate 180° around the plasma cutting gun 30, so that the grinding assembly 40 is located to the left of the plasma cutting gun 30. Then, the feeding mechanism conveys the subsequent metal sheet again. A predetermined distance is set, and then the first drive component 20 drives the plasma cutting gun 30 and the grinding component 40 to move to the right. When the plasma cutting gun 30 moves to the right, it cuts the subsequent metal sheet again, and the grinding component 40 grinds the resulting cut seam again. When the plasma cutting gun 30 moves to a position close to the right support plate 101, the plasma cutting gun 30 completes the second cut. At this time, the second drive component 50 on the side wall of the right support plate 101 drives the grinding component 40 to rotate 180° around the plasma cutting gun 30 again, so that the grinding component 40 is once again located to the right of the plasma cutting gun 30. Then the feeding mechanism conveys the subsequent metal sheet again to the predetermined distance, and the first drive component 20 drives the plasma cutting gun 30 and the grinding component 40 to move to the left again... This cycle repeats, which can realize continuous cutting of metal sheets. Compared with the existing technology, it can realize continuous automatic cutting of metal sheets, and at the same time, it can grind and remove the slag on the cut seam, thereby ensuring that the edge of the cut metal sheet remains flat, thus improving the cutting quality.

[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A plasma cutting device for metal wiring racks, characterized in that, Includes a cutting table, a first drive assembly, a plasma cutting gun, a grinding assembly, and a second drive assembly. A feeding mechanism is provided on the upper part of the cutting table, which is used to transport metal sheets. Two sets of support plates are fixedly installed on the upper edge of the cutting table, and the two sets of support plates are distributed facing each other from left to right. The plasma cutting torch is positioned between the two sets of support plates. The first drive assembly is mounted on the side wall of the support plate and is used to drive the plasma cutting torch to reciprocate in order to cut the metal sheet. The grinding component is disposed on the side of the plasma cutting gun. When the plasma cutting gun cuts the metal sheet, the grinding component is used to grind the cut seam of the metal sheet. The second drive assembly comprises two sets, each mounted on the sidewall of one of the two sets of support plates. After the plasma cutting gun cuts the metal sheet, the second drive assembly drives the grinding assembly to rotate 180° around the plasma cutting gun. The first drive assembly includes a support rod, which is disposed between the two sets of support plates and is vertically distributed. The grinding assembly includes a first connecting rod, a protective box, a first grinding disc, a grinding rod, and a second grinding disc. The first and second grinding discs are arranged vertically. The grinding rod is fixedly positioned at the center between the first and second grinding discs. One end of the first connecting rod is connected to the support rod, and the other end is fixedly connected to the protective box. A second motor is installed inside the protective box, and the output shaft of the second motor is connected to the first grinding disc. The grinding assembly also includes a rotating drum and a gear. The rotating drum is rotatably mounted outside the support rod, and the gear is fixedly mounted outside the rotating drum. The end of the first connecting rod away from the protective box is fixedly connected to the rotating drum. The second drive assembly includes a support bar, a helical toothed plate, and a second elastic element. The support bar is fixedly mounted on the side wall of the support plate. Several groups of helical teeth are provided. Several helical teeth are hinged to the side wall of the support bar and distributed sequentially at intervals along the length of the support bar. Each group of helical teeth is connected to the support bar on one side through a group of second elastic members. The second elastic members are used to provide elastic support for the helical teeth.

2. The plasma cutting device for a metal wiring rack according to claim 1, characterized in that, The first drive assembly further includes a first motor, a lead screw, a guide rod, a first sliding sleeve, and a second sliding sleeve. The plasma cutting gun is fixedly mounted on the bottom of the support rod, and the first sliding sleeve and the second sliding sleeve are respectively fixedly mounted on opposite side walls of the support rod. The guide rod is fixedly disposed between the two sets of support plates. The guide rod passes through the first sliding sleeve and is slidably engaged with the first sliding sleeve. The lead screw is rotatably installed between the two sets of support plates. The lead screw passes through the second sliding sleeve and is threadedly engaged with the second sliding sleeve. The first motor is fixedly installed on the side wall of one set of support plates to drive the lead screw to rotate.

3. The plasma cutting device for a metal wiring rack according to claim 1, characterized in that, The grinding assembly also includes a V-shaped limiting rod, a second connecting rod, and a sliding sleeve. The sliding sleeve is slidably fitted onto the outside of the support rod. Two sets of V-shaped limiting rods are provided, each set hinged to one of the left or right sides of the support rod. The lower ends of both sets of V-shaped limiting rods extend to between adjacent teeth of the gear. A second connecting rod is hinged to the upper ends of each set of V-shaped limiting rods, and the upper ends of the two sets of second connecting rods are hinged to the sliding sleeve. Guide sleeves are fixedly installed on the side walls of both sets of support plates. A top rod is movably inserted into the end of the guide sleeve away from the corresponding support plate. A ring block is fixedly installed on the outside of the top rod. The ring block is connected to the guide sleeve through a first elastic element, which provides elastic support for the top rod.

4. The plasma cutting device for a metal wiring rack according to claim 1, characterized in that, The cutting table is also equipped with a clamping assembly, which is used to clamp the metal strip.

5. The plasma cutting device for a metal wiring rack according to claim 4, characterized in that, The clamping assembly includes a hydraulic cylinder and a clamping plate. The hydraulic cylinder is provided in two sets, which are fixedly installed on the cutting table and distributed in a left-right opposite manner. Each set of hydraulic cylinders has a clamping plate at its output end.

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