阅读说明：本技术 一种等离子切割用的主驱动横梁装置 (Main drive beam device for plasma cutting ) 是由 张耀 黄慧媛 齐申 屈恒 于 2021-08-16 设计创作，主要内容包括：本发明属于钢材切割设备技术领域,具体的说是一种等离子切割用的主驱动横梁装置,包括切割单元和横梁本体；所述切割单元滑动连接在横梁顶部,切割单元侧边转动连接有转轴,转轴底部固连有齿轮,转轴通过伺服电机驱动；所述横梁本体上与齿轮对应位置固连有齿条,齿条与齿轮相互啮合；所述齿条与横梁本体之间设有U形槽,所述切割单元内固连有储油箱,储油箱内装有润滑脂,储油箱底部与齿条对应位置连通有下料管；本发明通过储油箱中储存的润滑脂经下料管涂抹在齿条外周,增加齿条外周油膜的厚度,减少熔渣飞溅并粘附在齿条上,进而保证切割单元在横梁上运动的顺畅性和移动精度,进一步保证等离子切割机切割工件后的形状精度。(The invention belongs to the technical field of steel cutting equipment, and particularly relates to a main driving beam device for plasma cutting, which comprises a cutting unit and a beam body; the cutting unit is connected to the top of the cross beam in a sliding mode, the side edge of the cutting unit is rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a gear, and the rotating shaft is driven by a servo motor; a rack is fixedly connected to the position, corresponding to the gear, of the beam body, and the rack is meshed with the gear; a U-shaped groove is formed between the rack and the cross beam body, an oil storage tank is fixedly connected in the cutting unit, lubricating grease is filled in the oil storage tank, and a discharging pipe is communicated with the bottom of the oil storage tank and the position corresponding to the rack; according to the invention, the lubricating grease stored in the oil storage tank is coated on the periphery of the rack through the blanking pipe, so that the thickness of an oil film on the periphery of the rack is increased, slag splashing is reduced and the slag is adhered to the rack, and further, the smoothness and the moving precision of the movement of the cutting unit on the cross beam are ensured, and the shape precision of the plasma cutting machine after a workpiece is cut is further ensured.)

1. A main drive beam device for plasma cutting is characterized in that: comprises a cutting unit (1) and a beam body (11); the cutting unit (1) is connected to the top of the beam body (11) in a sliding mode, a rotating shaft (12) is connected to the side edge of the cutting unit (1) in a rotating mode, a gear (13) is fixedly connected to the bottom of the rotating shaft (12), and the rotating shaft (12) is driven by a servo motor; a rack (14) is fixedly connected to the position, corresponding to the gear (13), of the beam body (11), and the rack (14) is meshed with the gear (13); be equipped with U-shaped groove (15) between rack (14) and crossbeam body (11), cutting unit (1) internal fixation has batch oil tank (16), is equipped with lubricating grease in batch oil tank (16), and batch oil tank (16) bottom corresponds position intercommunication with rack (14) has unloading pipe (17).

2. A main drive beam assembly for plasma cutting as recited in claim 1, wherein: an extrusion hole (18) is formed in one side of the U-shaped groove (15), a filter screen (19) is arranged in the extrusion hole (18), a push plate (21) is fixedly connected to one side of the cutting unit (1) and the position, corresponding to the extrusion hole (18), through a connecting rod (2), and the push plate (21) is in sliding connection with the extrusion hole (18); the bottom of the extrusion hole (18) is communicated with an extrusion pipe (22), and the top end of the extrusion pipe (22) is arranged corresponding to the top of the oil storage tank (16).

3. A main drive beam assembly for plasma cutting as recited in claim 2, wherein: the filter screen (19) is connected with the extrusion hole (18) in a sliding and sealing manner, and a pressure spring is fixedly connected between the filter screen (19) and the bottom of the extrusion hole (18); the bottom of one end of the extrusion hole (18) close to the hole bottom is communicated with a slag storage cavity (24) through a slag discharge hole (23); one side equipartition that push pedal (21) are close to filter screen (19) is a set of curved elastic rod (25), and elastic rod (25) free end downward sloping, but elastic rod (25) free end fixedly connected has kicking ball (26).

4. A main drive beam assembly for plasma cutting as recited in claim 3, wherein: the slag discharging hole (23) is of a conical structure with a large upper part and a small lower part, an elastic ring (27) attached to the slag discharging hole (23) is fixedly connected in the slag discharging hole (23), and the bottom of the elastic ring (27) is in a closed state; a set of magnetic balls (28) are symmetrically arranged in the slag storage cavity (24) close to the slag discharge hole (23), the magnetic balls (28) are hinged with the side wall of the slag storage cavity (24) through a half-ball seat (29) and a rotating pin (3), and a torsion spring is sleeved on the rotating pin (3).

5. The main drive beam assembly for plasma cutting of claim 4, wherein: the semi-ball seats (29) on the two sides of the magnetic ball (28) are fixedly connected with a pair of hooks (31), the hooks (31) are arranged oppositely, and the hooks (31) have certain elasticity.

6. A main drive beam assembly for plasma cutting as recited in claim 5, wherein: the discharging pipe (17) is internally and rotatably connected with an auger (32), and the auger (32) is driven to rotate by a driving unit.

7. A main drive beam assembly for plasma cutting as recited in claim 6, wherein: the bottom of the cutting unit (1) is provided with a spray head (33), the periphery of the spray head (33) is provided with a conical gas collecting hood (34), and the top of the gas collecting hood (34) is hermetically connected with the spray head (33); an annular filter cloth (35) is fixedly connected in the gas-collecting hood (34); an annular filter cloth (35) is fixedly connected in the gas-collecting hood (34); the gas collecting hood (34) is communicated with a blower (36) through a gas inlet pipe; an annular hole (37) is formed in the side wall of the oil storage tank (16), and an exhaust hole (38) communicated with the upper edge of the oil storage tank (16) is formed in the top of the annular hole (37); the annular hole (37) is communicated with an air outlet of the air blower (36) through an exhaust pipe (39), and the exhaust hole (38) is communicated with an exhaust gas treatment unit through a pipeline.

8. A main drive beam assembly for plasma cutting as recited in claim 7, wherein: the driving unit comprises an elastic friction wheel (4), and the periphery of the friction wheel (4) is propped against the rotating shaft (12); the friction wheel (4) is rotationally connected with the packing auger (32), and a spiral groove (41) is formed in one end, close to the friction wheel (4), of the packing auger (32); a sliding hole (42) is formed in the auger (32) at a position corresponding to the spiral groove (41), a friction block (43) is connected in the sliding hole (42) in a sliding manner, a spring is fixedly connected between one side of the friction block (43) and the bottom of the sliding hole (42), and the other side of the friction block is connected with the auger (32) in a sliding manner; one side of the friction block (43) close to the packing auger (32) is fixedly connected with a clamping block (44), and the clamping block (44) is embedded into the spiral groove (41) and is in sliding connection with the spiral groove (41).

9. A main drive beam assembly for plasma cutting as recited in claim 7, wherein: the diameter of an exhaust hole (38) on one side of the oil storage tank (16) far away from the exhaust pipe (39) is larger than that on the other side; one end of the auger (32) positioned on the inner wall of the oil storage tank (16) is fixedly connected with a group of inclined scrapers (45), the scrapers (45) are matched with the contour of the inner wall of the oil storage tank (16), and the scrapers (45) are in clearance fit with the inner wall of the oil storage tank (16).

10. A main drive beam assembly for plasma cutting as recited in claim 7, wherein: one side in the exhaust hole (38) is rotatably connected with a wind wheel (46), and the wind wheel (46) is fixedly connected with a fan-shaped magnetic block (47); the inner wall of the exhaust hole (38) on one side of the wind wheel (46) close to the annular hole (37) is fixedly connected with an arc-shaped air deflector (48), and the air deflector (48) is tangent to the inner wall of the exhaust hole (38); one side equipartition that scraper blade (45) are close to oil storage tank (16) inner wall is a set of curved elastic doctor-bar (49), and doctor-bar (49) free end is to the direction slope that is close to auger (32).

Technical Field

The invention belongs to the technical field of steel cutting equipment, and particularly relates to a main driving beam device for plasma cutting.

Background

Numerical control cutting, that is, workpiece instructions (or programs) for controlling a machine tool or equipment, is a new control method given in numerical form. When the command is given to the controller of the numerical control automatic cutting machine, the cutting machine can automatically cut according to a given program. Plasma cutting is a process in which the heat of a high-temperature plasma arc is used to partially or locally melt (and vaporize) the metal at the cut of a workpiece and the molten metal is removed by the momentum of the high-speed plasma to form the cut.

Some technical schemes related to steel cutting equipment also appear in the prior art, for example, a chinese patent with application number CN2016200239407 discloses a high-efficiency plasma cutting machine device, which comprises a main control device and a beam support, wherein the beam support is driven by a motor to slide on a guide rail; a workbench is arranged below the beam support; the beam support is provided with a cooling water device and two plasma cutting machines, the two plasma cutting machines are driven by respective independent motors to horizontally slide on the beam support, and one of the two plasma cutting machines is provided with a laser distance sensor for measuring the distance between the two plasma cutting machines; the plasma cutting machine comprises a plasma arc nozzle, the plasma arc nozzle comprises an electrode and a nozzle cover, a surrounding cooling water pipe is arranged on the nozzle cover, and a water outlet and a water inlet of the cooling water pipe are both communicated with a cooling water device; and the main control device is respectively connected with the two plasma cutting machines, the cooling water device, the laser distance sensor and the electric signals of the motors.

However, in the prior art, when the plasma cutting machine performs cutting operation, a large amount of slag is easy to splash due to the impact of air flow, and after the slag is adhered to the rack for driving on the beam, the movement precision and the movement stability of the cutting head are seriously influenced, the abrasion of the guide rail and the rack is increased, the shape precision of the cut workpiece is reduced, and the cutting quality is influenced.

Therefore, the invention provides a main driving beam device for plasma cutting.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that a large amount of slag is easy to splash under the impact action of air flow when a plasma cutting machine carries out cutting operation in the prior art, the moving precision and the moving stability of a cutting head are seriously influenced after the slag is adhered to a rack for driving on a beam, the abrasion of a guide rail and the rack is increased, the shape precision of a workpiece after cutting is reduced, and the cutting quality is influenced, the invention provides the main driving beam device for plasma cutting.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a main driving beam device for plasma cutting, which comprises a cutting unit and a beam body; the cutting unit is connected to the top of the cross beam in a sliding mode, the side edge of the cutting unit is rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a gear, and the rotating shaft is driven by a servo motor; a rack is fixedly connected to the position, corresponding to the gear, of the beam body, and the rack is meshed with the gear; a U-shaped groove is formed between the rack and the cross beam body, an oil storage tank is fixedly connected in the cutting unit, lubricating grease is filled in the oil storage tank, and a discharging pipe is communicated with the bottom of the oil storage tank and the position corresponding to the rack; when the plasma cutting machine works, a large amount of slag is easy to splash under the impact action of air flow when the plasma cutting machine in the prior art performs cutting operation, the movement precision and the movement stability of a cutting head are seriously influenced after the slag is adhered to a rack which is arranged on a beam and used for driving, the abrasion of a guide rail and the rack is increased, the shape precision of a workpiece after cutting is reduced, and the cutting quality is influenced; at the moment, lubricating grease stored in the oil storage tank is coated on the periphery of the rack through the blanking pipe, the thickness of an oil film on the periphery of the rack is increased, so that splashed slag is isolated, the splashed slag is reduced and is adhered to the rack, the smoothness and the moving precision of the cutting unit on the beam are ensured, the shape precision of the plasma cutting machine after the workpiece is cut is further ensured, meanwhile, the cutting unit is enabled to stably and uniformly perform cutting operation, the neat cutting seam at the cutting opening is increased, the reprocessing allowance of the cut workpiece is further reduced, and the utilization efficiency of the workpiece is increased.

Preferably, an extrusion hole is formed in one side of the U-shaped groove, a filter screen is arranged in the extrusion hole, a push plate is fixedly connected to a position, corresponding to the extrusion hole, on one side of the cutting unit through a connecting rod, and the push plate is connected with the extrusion hole in a sliding mode; the bottom of the extrusion hole is communicated with an extrusion pipe, and the top end of the extrusion pipe is arranged corresponding to the top of the oil storage tank; when reciprocating sliding on the crossbeam body through the cutting unit, drive the push pedal through the connecting rod and scrape in the U-shaped groove and push for the slag that drops on the rack collects with the direction that is close to the extrusion hole after the lubricating grease mixes, later extrude into the extrusion hole through the push pedal, during lubricating grease flows back into oil storage tank cyclic utilization after the filter screen filters, the slag then is intercepted by the filter screen, and then the rack periphery that reduces the slag adhesion once more influences the meshing precision of gear and rack, further guarantees the motion precision of cutting unit.

Preferably, the filter screen is connected with the extrusion hole in a sliding and sealing manner, and a pressure spring is fixedly connected between the filter screen and the bottom of the extrusion hole; the bottom of one end of the extrusion hole close to the hole bottom is communicated with a slag storage cavity through a slag discharge hole; one side of the push plate, which is close to the filter screen, is uniformly provided with a group of arc-shaped elastic rods, the free ends of the elastic rods incline downwards, and the free ends of the elastic rods are fixedly connected with push balls; when extruding the filter screen through the push pedal, the filter screen slides to the direction that is close to the extrusion hole bottom, and later the filter screen stops sliding after the filter screen extrudees the pressure spring completely, exposes the scum hole in the one side that the filter screen is close to the push pedal, and the push pedal supports the filter screen and slides downwards under the drive of elastic rod when continuing to slide this moment, and then discharges into scum hole and storage sediment chamber behind the last remaining slag scraping of filter screen, further reduces the content of slag in the lubricating grease.

Preferably, the slag discharging hole is of a conical structure with a large upper part and a small lower part, an elastic ring attached to the slag discharging hole is fixedly connected in the slag discharging hole, and the bottom of the elastic ring is in a closed state; a group of magnetic balls are symmetrically arranged in the slag storage cavity at positions close to the slag discharge holes, the magnetic balls are hinged with the side wall of the slag storage cavity through a semi-ball seat and a rotating pin, and a torsional spring is sleeved on the rotating pin; the kickball close to the bottom moves downwards under the action of the elastic rod and is inserted into the elastic ring, so that molten slag is discharged into the slag storage cavity after the elastic ring is expanded, lubricating grease is prevented from entering the slag storage cavity by the elastic ring in a closed state in an initial state, the recycling efficiency of the lubricating grease is improved, meanwhile, after the kickball penetrates through the elastic ring to convey the molten slag into the slag storage cavity, the push plate is reset to drive the kickball to be drawn out, at the moment, the magnetic ball attracts and drives the half-ball seat to rotate to be close to the kickball, the molten slag adhered to the kickball is further smoothed out, and the efficiency of discharging the molten slag into the slag storage cavity is improved.

Preferably, the hemisphere seats at two sides of the magnetic ball are fixedly connected with a pair of hooks, the two hooks are arranged oppositely, and the hooks have certain elasticity; the scraping efficiency of the slag adhered to the periphery of the elastic rod and the heading ball is further increased by hooking the connecting part of the heading ball and the elastic rod through the hook.

Preferably, the feeding pipe is internally and rotatably connected with a packing auger, and the packing auger is driven to rotate by a driving unit; the packing auger is driven to rotate continuously by the driving unit, lubricating grease in the oil storage tank is forced to be output, and the lubricating grease is further added to be uniformly coated on the surface of the rack.

Preferably, the bottom of the cutting unit is provided with a spray head, the periphery of the spray head is provided with a conical gas-collecting hood, and the top of the gas-collecting hood is hermetically connected with the spray head; an annular filter cloth is fixedly connected in the gas-collecting hood; the gas collecting hood is communicated with a blower through a gas inlet pipe; an annular hole is formed in the side wall of the oil storage tank, and the top of the annular hole is provided with an exhaust hole communicated with the upper edge of the oil storage tank; the annular hole is communicated with an air outlet of the air blower through an exhaust pipe, and the exhaust hole is communicated with a waste gas treatment unit through a pipeline; high temperature waste gas that forms among the process of cutting the work piece through the air-blower sucks, heats the batch oil tank when high temperature gas flows through the exhaust hole and discharges afterwards for grease in the batch oil tank rapid heating and discharge downwards under low temperature environment, increase the mobility of grease, further increase the even coating of grease on the rack surface.

Preferably, the driving unit comprises an elastic friction wheel, and the periphery of the friction wheel is abutted against the rotating shaft; the friction wheel is rotationally connected with the auger, and a spiral groove is formed in one end, close to the friction wheel, of the auger; a sliding hole is formed in the auger and corresponds to the spiral groove, a friction block is connected in the sliding hole in a sliding manner, a spring is fixedly connected between one side of the friction block and the bottom of the sliding hole, and the other side of the friction block is connected with the auger in a sliding manner; one side of the friction block, which is close to the auger, is fixedly connected with a fixture block, and the fixture block is embedded into the spiral groove and is in sliding connection with the spiral groove; through the friction drive of friction pulley and pivot, reduce the too much slag card of splattering in the oil storage tank and die and damage the auger, when the auger card was dead, the pivot drove the friction pulley and continues low-speed rotation for a certain time simultaneously, and the cooperation helicla flute makes the auger rise a section distance through the fixture block this moment, and then increases the clearance efficiency of the slag of card income in the auger, further guarantees the normal work of auger.

Preferably, the diameter of the vent hole on one side of the oil storage tank, which is far away from the exhaust pipe, is larger than that on the other side; one end of the auger, which is positioned on the inner wall of the oil storage tank, is fixedly connected with a group of inclined scraping plates, the scraping plates are matched with the contour of the inner wall of the oil storage tank, and the scraping plates are in clearance fit with the inner wall of the oil storage tank; keep away from the exhaust hole diameter of blast pipe one side through the batch oil tank and be greater than the opposite side, make the exhaust gas flow keep evenly in the distribution hole, increase the heating effect of waste gas to each position lubricating grease of batch oil tank, the lubricating grease after will being close to the heating of batch oil tank inner wall is transported downwards simultaneously through the scraper blade of slope, make the lubricating grease at batch oil tank middle part constantly descend and be close to the batch oil tank inner wall, increase the heating efficiency of blast hole to lubricating grease, further increase the even coating of lubricating grease on the rack surface, reduce the slag adhesion in the rack periphery.

Preferably, one side in the exhaust hole is rotatably connected with a wind wheel, and the wind wheel is fixedly connected with a fan-shaped magnetic block; the inner wall of the exhaust hole, close to one side of the annular hole, of the wind wheel is fixedly connected with an arc-shaped air deflector, and the air deflector is tangent to the inner wall of the exhaust hole; one side of the scraping plate close to the inner wall of the oil storage tank is uniformly provided with a group of arc elastic scraping plates, and the free ends of the scraping plates incline towards the direction close to the packing auger; the wind wheel is driven to rotate under the drainage effect of the air deflector through air flow, so that the magnetic block intermittently attracts the scraper blade, the scraper blade continuously swings and is in reciprocating close to the inner wall of the attached oil storage tank, and the efficiency of downward transportation of softened lubricating grease is further improved by matching with the inclined scraper blade.

The invention has the following beneficial effects:

1. according to the main driving beam device for plasma cutting, lubricating grease stored in the oil storage tank is coated on the periphery of the rack through the blanking pipe, the thickness of an oil film on the periphery of the rack is increased, so that splashed slag is isolated, splashed slag is reduced and adhered to the rack, the smoothness and the moving precision of the movement of the cutting unit on the beam are ensured, the shape precision of a workpiece cut by a plasma cutting machine is further ensured, meanwhile, the cutting unit is enabled to stably and uniformly perform cutting operation, the neat cutting seam at the cut is increased, the reprocessing allowance of the workpiece after cutting is further reduced, and the utilization efficiency of the workpiece is increased.

2. According to the main driving beam device for plasma cutting, the kickball close to the bottom moves downwards under the action of the elastic rod and is inserted into the elastic ring, so that molten slag is discharged into the slag storage cavity after the elastic ring is expanded, lubricating grease is prevented from entering the slag storage cavity by the elastic ring in the initial state, the recycling efficiency of the lubricating grease is improved, meanwhile, after the kickball penetrates through the elastic ring to send the molten slag into the slag storage cavity, the push plate is reset to drive the kickball to be drawn out, the magnetic ball attracts and drives the half ball seat to rotate to be close to the kickball, the molten slag adhered to the kickball is further smoothed out, and the efficiency of discharging the molten slag into the slag storage cavity is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a cross-sectional view of the oil reservoir of the present invention;

FIG. 6 is a partial enlarged view of FIG. 5 at B;

FIG. 7 is an enlarged view of a portion of FIG. 5 at C;

in the figure: the cutting unit 1, the beam body 11, the rotating shaft 12, the gear 13, the rack 14, the U-shaped groove 15, the oil storage tank 16, the blanking pipe 17, the extrusion hole 18, the filter screen 19, the connecting rod 2, the push plate 21, the extrusion pipe 22, the slag discharge hole 23, the slag storage cavity 24, the elastic rod 25, the top ball 26, the elastic ring 27, the magnetic ball 28, the hemispherical seat 29, the rotating pin 3, the hook 31, the packing auger 32, the nozzle 33, the gas collecting hood 34, the filter cloth 35, the blower 36, the annular hole 37, the exhaust hole 38, the exhaust pipe 39, the friction wheel 4, the spiral groove 41, the sliding hole 42, the friction block 43, the clamping block 44, the scraping plate 45, the wind wheel 46, the magnet 47, the wind deflector 48 and the scraping blade 49.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1 to 6, the main driving beam device for plasma cutting according to the present invention includes a cutting unit 1 and a beam body 11; the cutting unit 1 is connected to the top of the beam body 11 in a sliding mode, a rotating shaft 12 is connected to the side edge of the cutting unit 1 in a rotating mode, a gear 13 is fixedly connected to the bottom of the rotating shaft 12, and the rotating shaft 12 is driven by a servo motor; a rack 14 is fixedly connected to the position, corresponding to the gear 13, of the beam body 11, and the rack 14 is meshed with the gear 13; a U-shaped groove 15 is formed between the rack 14 and the cross beam body 11, an oil storage tank 16 is fixedly connected in the cutting unit 1, lubricating grease is filled in the oil storage tank 16, and a discharging pipe 17 is communicated with the bottom of the oil storage tank 16 and the position corresponding to the rack 14; when the plasma cutting machine works, a large amount of slag is easy to splash due to the impact of air flow when the plasma cutting machine in the prior art performs cutting operation, the slag adheres to the rack 14 for driving on the beam body 11 to seriously affect the moving precision and moving stability of the cutting head, the abrasion of the guide rail and the rack 14 is increased, the shape precision of a workpiece after cutting is reduced, and the cutting quality is affected; at the moment, lubricating grease stored in the oil storage tank 16 is coated on the periphery of the rack 14 through the blanking pipe 17, so that the thickness of an oil film on the periphery of the rack 14 is increased, splashed slag is isolated, the splashed slag is reduced and is adhered to the rack 14, the smoothness and the moving precision of the movement of the cutting unit 1 on the beam body 11 are further ensured, the shape precision of the plasma cutting machine after the workpiece is cut is further ensured, meanwhile, the cutting unit 1 can stably and uniformly perform cutting operation, the tidy joint cutting at the cut is increased, the allowance reprocessing of the workpiece after the cutting is further reduced, and the utilization efficiency of the workpiece is increased.

An extrusion hole 18 is formed in one side of the U-shaped groove 15, a filter screen 19 is arranged in the extrusion hole 18, a push plate 21 is fixedly connected to one side of the cutting unit 1 corresponding to the extrusion hole 18 through a connecting rod 2, and the push plate 21 is connected with the extrusion hole 18 in a sliding mode; an extrusion pipe 22 is communicated with the bottom of the extrusion hole 18, and the top end of the extrusion pipe 22 is arranged corresponding to the top of the oil storage tank 16; when reciprocating sliding on the beam body 11 through the cutting unit 1, drive the push pedal 21 through the connecting rod 2 and scrape and push in the U-shaped groove 15, make the slag that drops on the rack 14 mix with lubricating grease and collect to the direction that is close to the extrusion hole 18, later extrude into the extrusion hole 18 through the push pedal 21, lubricating grease flows back into the oil storage tank 16 cyclic utilization after filtering through filter screen 19, the slag is then intercepted by filter screen 19, and then reduce the rack 14 periphery of slag adhesion once more and influence the meshing precision of gear 13 and rack 14, further guarantee the motion precision of cutting unit 1.

The filter screen 19 is connected with the extrusion hole 18 in a sliding and sealing manner, and a pressure spring is fixedly connected between the filter screen 19 and the bottom of the extrusion hole 18; the bottom of one end of the extrusion hole 18 close to the hole bottom is communicated with a slag storage cavity 24 through a slag discharge hole 23; one side of the push plate 21 close to the filter screen 19 is uniformly provided with a group of arc-shaped elastic rods 25, the free ends of the elastic rods 25 incline downwards, and the free ends of the elastic rods 25 are fixedly connected with push balls 26; when the filter screen 19 is extruded by the push plate 21, the filter screen 19 slides towards the direction close to the hole bottom of the extrusion hole 18, then the filter screen 19 stops sliding after the filter screen 19 completely extrudes the pressure spring, the slag discharge hole 23 is exposed at one side of the filter screen 19 close to the push plate 21, at the moment, the top ball 26 props against the filter screen 19 and slides downwards under the driving of the elastic rod 25 when the push plate 21 continues to slide, and then residual slag on the filter screen 19 is scraped and discharged into the slag discharge hole 23 and the slag storage cavity 24, so that the content of the slag in the lubricating grease is further reduced.

The slag discharging hole 23 is of a conical structure with a large upper part and a small lower part, an elastic ring 27 attached to the slag discharging hole 23 is fixedly connected in the slag discharging hole 23, and the bottom of the elastic ring 27 is in a closed state; a group of magnetic balls 28 are symmetrically arranged in the slag storage cavity 24 close to the slag discharge hole 23, the magnetic balls 28 are hinged with the side wall of the slag storage cavity 24 through a hemispherical seat 29 and a rotating pin 3, and a torsion spring is sleeved on the rotating pin 3; the top ball 26 close to the bottom moves downwards under the action of the elastic rod 25 and is inserted into the elastic ring 27, so that the slag is discharged into the slag storage cavity 24 after the elastic ring 27 is expanded, the elastic ring 27 in the initial state is in a closed state to reduce the entering of lubricating grease into the slag storage cavity 24, the recycling efficiency of the lubricating grease is improved, meanwhile, after the top ball 26 penetrates through the elastic ring 27 to send the slag into the slag storage cavity 24, the push plate 21 resets to drive the top ball 26 to be drawn out, at the moment, the magnetic ball 28 attracts and drives the half ball seat 29 to rotate to be close to the top ball 26, the slag adhered to the top ball 26 is further smoothed out, and the efficiency of discharging the slag into the slag storage cavity 24 is improved.

The half ball seats 29 on two sides of the magnetic ball 28 are fixedly connected with a pair of hooks 31, the two hooks 31 are oppositely arranged, and the hooks 31 have certain elasticity; the efficiency of scraping off the slag adhering to the outer peripheries of the elastic rod 25 and the knock ball 26 is further increased by hooking the connection portion of the knock ball 26 and the elastic rod 25 by the hook 31.

The discharging pipe 17 is rotatably connected with an auger 32, and the auger 32 is driven to rotate by a driving unit; the packing auger 32 is driven by the driving unit to rotate continuously, so that lubricating grease in the oil storage tank 16 is output forcibly, and the surface of the rack 14 is further coated with the lubricating grease uniformly.

A spray head 33 is arranged at the bottom of the cutting unit 1, a conical gas collecting hood 34 is arranged on the periphery of the spray head 33, and the top of the gas collecting hood 34 is hermetically connected with the spray head 33; an annular filter cloth 35 is fixedly connected in the gas-collecting hood 34; the gas collecting hood 34 is communicated with a blower 36 through an air inlet pipe; an annular hole 37 is formed in the side wall of the oil storage tank 16, and an exhaust hole 38 communicated with the upper edge of the oil storage tank 16 is formed in the top of the annular hole 37; the annular hole 37 is communicated with an air outlet of the blower 36 through an exhaust pipe 39, and the exhaust hole 38 is communicated with an exhaust gas treatment unit through a pipeline; high-temperature waste gas formed in the process that the spray head 33 cuts the workpiece is sucked through the blower 36, and then the oil storage tank 16 is heated when the high-temperature gas flows through the exhaust hole 38 to be exhausted, so that lubricating grease in the oil storage tank 16 is rapidly heated in a low-temperature environment and is exhausted downwards, the flowability of the lubricating grease is increased, and the lubricating grease is further uniformly coated on the surface of the rack 14.

The driving unit comprises an elastic friction wheel 4, and the periphery of the friction wheel 4 is propped against the rotating shaft 12; the friction wheel 4 is rotatably connected with the packing auger 32, and a spiral groove 41 is formed in one end, close to the friction wheel 4, of the packing auger 32; a sliding hole 42 is formed in the auger 32 at a position corresponding to the spiral groove 41, a friction block 43 is connected in the sliding hole 42 in a sliding manner, a spring is fixedly connected between one side of the friction block 43 and the bottom of the sliding hole 42, and the other side of the friction block is connected with the auger 32 in a sliding manner; one side of the friction block 43 close to the packing auger 32 is fixedly connected with a clamping block 44, and the clamping block 44 is embedded into the spiral groove 41 and is in sliding connection with the spiral groove 41; through the friction transmission of friction pulley 4 and pivot 12, reduce and splash into too much slag card in the oil storage tank 16 and die and damage auger 32, simultaneously when auger 32 card was dead, pivot 12 drove friction pulley 4 and continues low-speed rotation for a certain time, and the cooperation helicla flute 41 of passing through fixture block 44 makes auger 32 rise a section distance this moment, and then increases the clearance efficiency of the slag of card income in auger 32, further guarantees the normal work of auger 32.

The diameter of the exhaust hole 38 on one side of the oil storage tank 16 away from the exhaust pipe 39 is larger than that on the other side; one end of the auger 32, which is positioned on the inner wall of the oil storage tank 16, is fixedly connected with a group of inclined scrapers 45, the scrapers 45 are matched with the contour of the inner wall of the oil storage tank 16, and the scrapers 45 are in clearance fit with the inner wall of the oil storage tank 16; the diameter of the exhaust hole 38 on one side far away from the exhaust pipe 39 through the oil storage tank 16 is larger than that on the other side, so that the flow of waste gas in the exhaust hole 38 is kept uniform, the heating effect of the waste gas on lubricating grease at each position of the oil storage tank 16 is increased, meanwhile, the lubricating grease heated close to the inner wall of the oil storage tank 16 is conveyed downwards through the inclined scraper 45, the lubricating grease in the middle of the oil storage tank 16 continuously descends and is close to the inner wall of the oil storage tank 16, the heating efficiency of the exhaust hole 38 on the lubricating grease is increased, the lubricating grease is further increased to be uniformly coated on the surface of the rack 14, and the adhesion of slag to the periphery of the rack 14 is reduced.

Example two

As shown in fig. 7, a first comparative example, in which another embodiment of the present invention is:

one side in the exhaust hole 38 is rotatably connected with a wind wheel 46, and the wind wheel 46 is fixedly connected with a fan-shaped magnetic block 47; the inner wall of the exhaust hole 38, close to one side of the annular hole 37, of the wind wheel 46 is fixedly connected with an arc-shaped air deflector 48, and the air deflector 48 is tangent to the inner wall of the exhaust hole 38; a group of arc elastic scraping blades 49 are uniformly distributed on one side of the scraping plate 45 close to the inner wall of the oil storage tank 16, and the free ends of the scraping blades 49 incline towards the direction close to the packing auger 32; the wind wheel 46 is driven to rotate under the drainage action of the air deflector 48 through air flow, so that the magnetic block 47 intermittently attracts the scraper 45, the scraper 45 continuously swings and is in reciprocating close contact with the inner wall of the oil storage tank 16, and the downward transportation efficiency of softened lubricating grease is further improved by matching with the inclined scraper 49

When the plasma cutting machine works, lubricating grease stored in the oil storage tank 16 is coated on the periphery of the rack 14 through the blanking pipe 17, the thickness of an oil film on the periphery of the rack 14 is increased, so that splashed slag is isolated, the splashed slag is reduced and is adhered to the rack 14, the smoothness and the moving precision of the movement of the cutting unit 1 on the beam body 11 are further ensured, the shape precision of the plasma cutting machine after a workpiece is cut is further ensured, meanwhile, the cutting unit 1 can stably and uniformly perform cutting operation, the regular cutting seam at a cutting opening is increased, the reprocessing allowance of the cut workpiece is further reduced, and the utilization efficiency of the workpiece is increased; when the cutting unit 1 slides on the cross beam body 11 in a reciprocating manner, the connecting rod 2 drives the push plate 21 to scrape and push in the U-shaped groove 15, so that slag falling from the rack 14 is mixed with lubricating grease and then collected in a direction close to the extrusion hole 18, then the mixture is extruded into the extrusion hole 18 through the push plate 21, the lubricating grease is filtered by the filter screen 19 and then flows back into the oil storage tank 16 for cyclic utilization, the slag is intercepted by the filter screen 19, the influence of the periphery of the rack 14, which is adhered with the slag again, on the meshing precision of the gear 13 and the rack 14 is reduced, and the movement precision of the cutting unit 1 is further ensured; when the filter screen 19 is extruded by the push plate 21, the filter screen 19 slides towards the direction close to the bottom of the hole 18 of the extrusion hole, then the filter screen 19 stops sliding after the filter screen 19 completely extrudes the pressure spring, the slag discharge hole 23 is exposed at one side of the filter screen 19 close to the push plate 21, at the moment, the top ball 26 props against the filter screen 19 and slides downwards under the driving of the elastic rod 25 when the push plate 21 continues to slide, and then residual slag on the filter screen 19 is scraped and discharged into the slag discharge hole 23 and the slag storage cavity 24, so that the content of the slag in the lubricating grease is further reduced; the top ball 26 close to the bottom moves downwards under the action of the elastic rod 25 and is inserted into the elastic ring 27, so that the slag is discharged into the slag storage cavity 24 after the elastic ring 27 is expanded, the elastic ring 27 in the initial state and the closed state reduces the entering of lubricating grease into the slag storage cavity 24, the recycling efficiency of the lubricating grease is improved, meanwhile, after the top ball 26 penetrates through the elastic ring 27 to send the slag into the slag storage cavity 24, the push plate 21 resets to drive the top ball 26 to be drawn out, at the moment, the magnetic ball 28 attracts and drives the half ball seat 29 to rotate to be close to the top ball 26, the slag adhered to the top ball 26 is further stripped, and the efficiency of discharging the slag into the slag storage cavity 24 is improved; the scraping efficiency of the slag adhered to the peripheries of the elastic rod 25 and the top ball 26 is further increased by hooking the connecting part of the top ball 26 and the elastic rod 25 through the hook 31; the packing auger 32 is driven by the driving unit to rotate continuously, so that lubricating grease in the oil storage tank 16 is output forcibly, and the lubricating grease is further increased to be uniformly coated on the surface of the rack 14; high-temperature waste gas formed in the process of cutting the workpiece by the nozzle 33 is sucked by the blower 36, and then the oil storage tank 16 is heated when the high-temperature gas flows through the exhaust hole 38 and is exhausted, so that lubricating grease in the oil storage tank 16 is rapidly heated and exhausted downwards in a low-temperature environment, the flowability of the lubricating grease is increased, and the lubricating grease is further increased to be uniformly coated on the surface of the rack 14; through the friction transmission of the friction wheel 4 and the rotating shaft 12, excessive slag splashing into the oil storage tank 16 is reduced, the auger 32 is damaged, meanwhile, when the auger 32 is clamped, the rotating shaft 12 drives the friction wheel 4 to continue to rotate at a low speed for a certain time, the auger 32 is lifted for a certain distance through the fixture block 44 matched with the spiral groove 41, the cleaning efficiency of the slag clamped in the auger 32 is further improved, and the normal work of the auger 32 is further ensured; the diameter of the exhaust hole 38 on one side far away from the exhaust pipe 39 through the oil storage tank 16 is larger than that on the other side, so that the flow of waste gas in the exhaust hole 38 is kept uniform, the heating effect of the waste gas on lubricating grease at each position of the oil storage tank 16 is increased, meanwhile, the lubricating grease heated close to the inner wall of the oil storage tank 16 is conveyed downwards through the inclined scraper 45, the lubricating grease in the middle of the oil storage tank 16 continuously descends and is close to the inner wall of the oil storage tank 16, the heating efficiency of the exhaust hole 38 on the lubricating grease is increased, the lubricating grease is further increased to be uniformly coated on the surface of the rack 14, and the adhesion of slag to the periphery of the rack 14 is reduced.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.