CN113216810B

CN113216810B - Noise reduction protective door of numerical control machine tool

Info

Publication number: CN113216810B
Application number: CN202110442991.9A
Authority: CN
Inventors: 方映; 高庆云; 王惠姣; 张素颖; 凌华伟
Original assignee: Hangzhou Vocational and Technical College
Current assignee: Hangzhou Vocational and Technical College
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2022-12-06
Anticipated expiration: 2041-04-23
Also published as: CN113216810A

Abstract

The invention belongs to the technical field of numerical control machines, and particularly relates to a noise reduction protective door of a numerical control machine, which comprises a machine body; the side wall of the lathe bed is provided with a door slot, and the side wall of the door slot is provided with a surrounding slot; the surrounding groove is connected with a protective door in a sliding manner; an observation window is arranged on the protective door, and double-layer glass is fixedly connected in the observation window; a first cavity is formed in the bottom of the surrounding groove, and first grooves are formed in the bottoms of the two sides of the surrounding groove; a screw rod is rotatably connected to the side wall of the top end of the first groove, the bottom end of the screw rod extends into the first cavity, and a chain wheel is fixedly connected to a lever of the screw rod extending into the first cavity; the invention provides a noise reduction protective door of a numerical control machine tool, which aims to solve the problems that the protective door of the numerical control machine tool generally adopts a setting mode of pulling open or pushing open towards two sides, but the setting mode of the protective door occupies more space, enough opening space needs to be left for the protective door, and the numerical control machine tool with smaller size or smaller working space is inconvenient to use.

Description

Numerical control machine tool noise reduction protective door

Technical Field

The invention belongs to the technical field of numerical control machines, and particularly relates to a noise reduction protective door of a numerical control machine.

Background

The numerical control machine tool is an automatic machine tool provided with a program control system, and compared with the traditional machine tool, the numerical control machine tool has the advantages of high flexibility, high machining precision and high productivity, and can well solve the problem of machining of complex, precise, small-batch and multi-variety parts.

Some technical schemes about the digit control machine tool technique have also appeared among the prior art, have disclosed a guard gate for digit control machine tool like a chinese patent with application number 2018110742186, including bounding wall, guard gate and fingerprint identification device, the inside intermediate position of bounding wall is equipped with the rectangle chamber, and the upper and lower bilateral symmetry in rectangle chamber is equipped with the slide bar, the guard gate symmetry is established in the left and right sides in rectangle chamber, and the guard gate passes through circular slot and slide bar sliding connection, the inside of spout is equipped with automatic control mechanism, automatic control mechanism with be connected actuating mechanism swing joint, the upper and lower bilateral symmetry of observation window is equipped with a body locking mechanism, fingerprint identification device fixed connection is on the surface of bounding wall, realizes through automatic control mechanism and connection actuating mechanism that only when the guard gate closes, the digit control machine tool can only start to the staff can only open the guard gate through door locking mechanism after the discernment of fingerprint identification device is closed to the guard gate, and the digit control machine tool automatic shutdown operation after the guard gate is opened, thereby effectively ensure at staff's personal safety.

In the prior art, a protective door of a numerical control machine tool is generally arranged in a mode of pulling open or pushing open towards two sides, but the protective door is large in occupied space, enough opening space needs to be reserved for the protective door, and the numerical control machine tool with the smaller size or the smaller working space is inconvenient to use.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the noise reduction protective door of the numerical control machine tool, which solves the problems that the protective door of the numerical control machine tool generally adopts a setting mode of pulling open or pushing open to two sides, but the setting mode of the protective door occupies more space, enough opening space needs to be left for the protective door, and the numerical control machine tool with smaller size or smaller working space is inconvenient to use.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a noise reduction protective door of a numerical control machine tool, which comprises a machine body; the side wall of the lathe bed is provided with a door slot, and the side wall of the door slot is provided with a surrounding slot; the enclosure groove is connected with a protective door in a sliding manner; the protective door is provided with an observation window, and double-layer glass is fixedly connected in the observation window; a first cavity is formed in the bottom of the surrounding groove, and first grooves are formed in the bottoms of the surrounding grooves at two sides; a lead screw is rotatably connected to the side wall of the top end of the first groove, the bottom end of the lead screw extends into the first cavity, and a chain wheel is fixedly connected to a lever of the lead screw extending into the first cavity; the chain wheels are driven by a transmission chain; the first cavity is fixedly connected with a motor, and the output end of the motor is connected with a screw rod; a moving block is connected in the first groove in a sliding manner and is fixedly connected to the side wall of the protective door; the lead screw and the moving block are connected with each other through a lead screw nut pair; when the numerical control machine tool is operated, when a product is placed on the numerical control machine tool to be opened, the motor is started, the motor rotates to rotate through the chain wheel and simultaneously drives the screw to rotate forwards, the screw forwards rotates to drive the moving block to move upwards in the first groove, the moving block moves to drive the protective door to move upwards, the protective door is opened upwards, the product is placed into the machine tool body, the screw is driven to rotate reversely by the motor to rotate, the screw reversely rotates to drive the moving block to move downwards in the first groove, the moving block moves to drive the protective door to move downwards, the protective door is closed, the numerical control machine tool is started to work, the protective door is driven to move upwards and downwards to be opened and closed by driving the screw to rotate by the motor to drive the screw to move, the working space of the protective door is the upper side of the machine tool, the numerical control machine tool with smaller size or smaller working space can be suitable for the numerical control machine tool, double-layer glass is arranged on the observation window on the protective door, the working condition of the machine tool can be conveniently observed, and further noise emission can be reduced.

Preferably, the side walls of the two sides of the door slot are rotatably connected with rotating shafts, and the rotating shafts are fixedly connected with cleaning wheels; when the protective door is opened and closed, the cleaning wheels are contacted with the inner wall of the double-layer glass of the observation window; the during operation because at data lathe during operation, some impurity in the lathe bed or some lubricating oil etc. all can get rid of on the double glazing of observation window, can lead to the double glazing of observation window to become the greasy dirt for a long time and lead to unable clear observation in the digit control machine tool, for this reason when the guard gate is opened or is closed, double glazing on the observation window all can with clean the wheel and contact the friction each other, and then clean, guarantee double glazing's clean and tidy nature.

Preferably, a second groove is formed in the side wall of the surrounding groove, and the top end of the second groove is positioned at the opening end; two ends of a rotating shaft on the cleaning wheel extend into the second groove and are fixedly connected with a first gear; a second gear is fixedly connected to the inner wall of the second groove through a rotating shaft; the second gear is meshed with the first gear, and the diameter of the second gear is larger than that of the first gear; a rack layer is fixedly connected to the side wall of the surrounding groove of the protective door, the rack layer extends into the second groove, and the second gear is meshed with the rack layer; the during operation, when the guard gate reciprocated, this moment can drive second gear revolve through the rack layer, second gear revolve can drive first gear revolve, and under the interact through rack layer, second gear and first gear, can drive the removal opposite direction of cleaning wheel direction of rotation and guard gate, can further strengthen the cleanness of cleaning the observation window on the wheel pair guard gate, and the second gear is greater than first gear, can further improve the rotational speed of cleaning wheel, improve and clean efficiency.

Preferably, the sweeping wheel comprises an inner wheel and an elastic layer; the inner wheel and the elastic layer are connected through a support piece; the support member includes a support plate; a group of supporting plates are fixedly connected to the inner wall of the elastic layer; the supporting plate is fixedly connected to the inner wheel through an elastic sheet; the outer layer of the elastic layer is fixedly connected with a sponge layer; the during operation, when the guard gate reciprocated, the wheel of cleaning this moment can take place to rotate and clean the double glazing of the observation window on the guard gate, has the elastic layer through the wheel of cleaning that sets up, when cleaning wheel and guard gate and contact, the elastic layer received the extrusion this moment, not only can increase the contact range of cleaning wheel and guard gate, can also further strengthen and clean the effect.

Preferably, the bottom end of the supporting plate is fixedly connected with a vibration plate through a fixing column; the bottom end of the vibrating plate is fixedly connected with a magnetic ball through an elastic rope; a magnetic seat is fixedly connected to the position of the inner wheel relative to the magnetic ball; the magnetic ball and the magnetic seat are mutually attracted; the during operation, when cleaning wheel pair double glazing cleans, elastic layer and double glazing's contact point this moment, the elastic layer can receive the extrusion, the elastic layer receives the extrusion, the backup pad of extrusion department removes to cleaning wheel central point this moment, the magnetic ball can adsorb on the magnetism seat this moment, after cleaning wheel is rotatory, the extruded backup pad can be the reconversion under the effect of flexure strip, the magnetic ball is strained by the elastic rope this moment, when backup pad reconversion, the elasticity of elastic rope is greater than the mutual appeal of magnetic ball and magnetism seat this moment, the magnetic ball can be under the effect of elastic rope this moment, strike the vibrations board, vibrations of vibrations board can drive elastic layer and sponge layer and shake, can clear away some impurity that depend on at the sponge layer, keep the effect of cleaning on sponge layer.

Preferably, a group of second cavities are formed in the inner wheel, and oil removal agents are arranged in the second cavities; a group of third cavities are formed in the inner wheel, the third cavities are connected with a pressing plate in a sliding mode, and a connecting column is fixedly connected to the side wall of the pressing plate; the connecting column penetrates through the second cavity and is fixedly connected to the sponge layer; the connecting column is in a hollow state; a storage bag is arranged between the second cavity and the pressing plate; one end of the storage bag is communicated with the second cavity through a hose, the other end of the storage bag is communicated with the hollow cavity of the connecting column through a hose, and the hoses are internally provided with one-way valves; the during operation, when the cleaning wheel received the extrusion, can promote the spliced pole this moment and drive the clamp plate and remove in the third cavity, extrude the storage bag, the deoiling agent of storage bag can get into the well cavity of spliced pole through the hose, in getting into the sponge layer, the sponge layer is filled with the deoiling agent, can further increase the effect of cleaning of greasy dirt on to double glazing, because of being equipped with the check valve in the hose, the flow direction of deoiling agent gets into the storage bag for the second cavity, in getting into the spliced pole, in getting into the sponge layer.

Preferably, an arc-shaped plate is fixedly connected to the inner wall of the door slot through a fixing column; the arc plate covers the cleaning wheel, and a cleaning piece is arranged in the arc plate; the during operation covers the cleaning wheel through setting up the arc, can prevent that some impurity and greasy dirt in the lathe bed from directly depending on the cleaning wheel, and when the cleaning wheel was rotatory, the impurity on the cleaning wheel can be at the effect of centrifugal force and the separation of cleaning wheel, and the arc can prevent the in disorder of impurity and fly. And the bottom end of the arc-shaped plate is fixedly connected with a collecting box, and impurities thrown off from the sweeping wheel can enter the collecting cavity through the arc-shaped plate.

Preferably, the sweeping member includes a fourth cavity; the fourth cavity is communicated with the side wall of the arc-shaped plate through a through hole; a push plate is fixedly connected to the side wall, close to the inner wall of the arc-shaped plate, in the fourth cavity through a telescopic rod, a group of cleaning brushes are fixedly connected to the push plate, and the cleaning brushes enter and exit the arc-shaped plate through holes; a layer of shock absorption pad is fixedly connected to the bottom of the surrounding groove, and a group of fifth cavities are formed in the shock absorption pad; the fifth cavity is communicated with a telescopic rod through a hose, and the telescopic rod extends through inflation; when the protection door moves up and down, the shock pad has elasticity, a fifth cavity in the shock pad can absorb gas in the telescopic rod through the hose, the telescopic rod contracts at the moment to drive the push plate to move, the push plate moves to drive the cleaning brush on the push plate to enter the arc-shaped plate through the through hole, and the rotating cleaning wheel cleans impurities; when the cleaning wheel is reversed, the impurity on the cleaning wheel can be cleaned through cleaning the brush at this moment, but when the cleaning wheel corotation, the impurity can pile up on cleaning the brush on the cleaning wheel this moment, and it can depend on cleaning the brush line to follow rare impurity, so when the guard gate is closed completely, can extrude fifth cavity in the shock pad earlier, gas in the fifth cavity can get into in the telescopic link, the telescopic link extension can drive and clean brush entering through-hole, when cleaning the brush and remove, impurity can be clear away by the through-hole, carry out the automatically cleaning to cleaning the brush, the assurance cleans the effect of cleaning of brush.

Preferably, a sixth cavity is formed in the surrounding groove; the bottom end of the sixth cavity is fixedly connected with a first conductive plate through a spring; the top end of the sixth cavity is fixedly connected with a second conductive plate through a spring; the top end of the second current-conducting plate is fixedly connected with a compression leg, and the compression leg extends into the surrounding groove; the during operation, when the guard gate was closed completely, the guard gate can extrude the compression leg this moment, and the compression leg moves down and can drive first current conducting plate and second current conducting plate and carry out the contact circular telegram, just can carry out work in the digit control machine tool this moment, when the guard gate was opened, second current conducting plate and first current conducting plate can take place to separate this moment, place when the guard gate was opened, and the digit control machine tool can also work, improves the factor of safety of operation of digit control machine tool.

Preferably, the bottom end of the arc-shaped plate is fixedly connected with a collecting box; during operation, the collecting box is fixedly connected to the bottom end of the arc-shaped plate, and impurities thrown away from the cleaning wheel and impurities cleaned through the cleaning brush can enter the collecting cavity through the arc-shaped plate.

The invention has the following beneficial effects:

1. according to the noise reduction protective door of the numerical control machine tool, the motor is started to drive the screw rod to rotate so as to drive the protective door to move up and down for opening and closing, the working space of the protective door is the upper side of the machine tool body, the noise reduction protective door can be suitable for a small numerical control machine tool or a numerical control machine tool with a small working space, and the double-layer glass is arranged on the observation window on the protective door, so that the working condition of the machine tool can be conveniently observed, and the noise emission can be further reduced.

2. According to the noise reduction protective door of the numerical control machine tool, when the protective door moves up and down, the rack layer drives the second gear to rotate, the second gear rotates to drive the first gear to rotate, and the rotation direction of the cleaning wheel is opposite to the moving direction of the protective door under the interaction of the rack layer, the second gear and the first gear, so that the cleaning of the cleaning wheel on the observation window on the protective door can be further enhanced, and the second gear is larger than the first gear, so that the rotation speed of the cleaning wheel can be further increased, and the cleaning efficiency is improved.

3. According to the noise reduction protective door of the numerical control machine tool, when the protective door is completely closed, the protective door can extrude the compression leg, the compression leg moves downwards to drive the first current conducting plate and the second current conducting plate to be in contact with each other and electrified, the numerical control machine tool can work, when the protective door is opened, the second current conducting plate and the first current conducting plate can be separated, when the protective door is opened, the numerical control machine tool can work, and the working safety coefficient of the numerical control machine tool 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 partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a partial top view of the present invention;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 4;

FIG. 6 is a partial rear view of the present invention;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;

FIG. 8 is an enlarged view at D of FIG. 7;

FIG. 9 is a sectional view of the collection bin;

in the figure: 1. a bed body; 11. a door slot; 12. a protective door; 13. enclosing the groove; 14. a first cavity; 15. a first groove; 16. a moving block; 17. a lead screw; 18. an electric motor; 19. an observation window; 2. cleaning wheels; 21. a second groove; 22. a first gear; 23. a second gear; 24. a rack layer; 3. an inner wheel; 31. an elastic layer; 32. a support plate; 33. a vibration plate; 34. a magnetic ball; 35. a magnetic base; 36. a second cavity; 37. a third cavity; 38. connecting columns; 39. pressing a plate; 391. a storage bladder; 4. an arc-shaped plate; 41. a collection box; 42. a fourth cavity; 43. a telescopic rod; 44. pushing the plate; 45. cleaning a brush; 46. a shock pad; 47. a fifth cavity; 5. a sixth cavity; 51. a first conductive plate; 52. a second conductive plate; 53. and (5) pressing the column.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.

The first embodiment is as follows:

as shown in fig. 1 to 8, the noise reduction protection door for a numerical control machine tool comprises a machine body 1; the side wall of the lathe bed 1 is provided with a door slot 11, and the side wall of the door slot 11 is provided with an enclosing slot 13; the surrounding groove 13 is connected with a protective door 12 in a sliding manner; an observation window 19 is arranged on the protective door 12, and double-layer glass is fixedly connected in the observation window 19; a first cavity 14 is formed in the bottom of the surrounding groove 13, and first grooves 15 are formed in the bottoms of the surrounding grooves 13 at two sides; a lead screw 17 is rotatably connected to the side wall of the top end of the first groove 15, the bottom end of the lead screw 17 extends into the first cavity 14, and a chain wheel is fixedly connected to a lever of the lead screw 17 extending into the first cavity 14; the chain wheels are driven by a transmission chain; a motor 18 is fixedly connected to the first cavity 14, and the output end of the motor 18 is connected with a screw 17; a moving block 16 is slidably connected in the first groove 15, and the moving block 16 is fixedly connected to the side wall of the protective door 12; the lead screw 17 and the moving block 16 are connected with each other through a lead screw nut pair; when the numerically-controlled machine tool is in operation, when a product needs to be placed on the numerically-controlled machine tool, the motor 18 is started, the motor 18 rotates to simultaneously drive the lead screw 17 to rotate forwards through the chain wheel, the lead screw 17 rotates forwards to drive the moving block 16 to move upwards in the first groove 15, the moving block 16 moves to drive the protective door 12 to move upwards, the protective door 12 is opened upwards, the product is placed in the machine tool body 1, the lead screw 17 rotates backwards to drive the lead screw 17 to rotate backwards, the lead screw 17 rotates backwards to drive the moving block 16 to move downwards in the first groove 15, the moving block 16 moves to drive the protective door 12 to move downwards, the protective door 12 is closed, the numerically-controlled machine tool is started to operate, the lead screw 17 is driven to rotate to drive the protective door 12 to move upwards to open and close, the working space of the protective door 12 is above the machine tool body 1, the protective door can be suitable for small-sized machine tools, the numerically-controlled machine tool can be used for observing the noise of the glass 19 arranged on the protective door 12, and the machine tool can be convenient for observing the noise of the machine tool and reducing the noise of the machine tool.

The side walls at two sides of the door slot 11 are rotatably connected with rotating shafts, and the rotating shafts are fixedly connected with cleaning wheels 2; when the protective door 12 is opened and closed, the cleaning wheels 2 and the inner wall of the double-layer glass of the observation window 19 are contacted with each other; the during operation because at data lathe during operation, some impurity or some lubricating oil etc. in the lathe bed 1 all can get rid of on observation window 19's double glazing, can lead to the double glazing of observation window 19 to become the greasy dirt for a long time and lead to unable clear observation in the digit control machine tool, for this reason when guard gate 12 is opened or is closed, double glazing on the observation window 19 all can with the 2 mutual contact friction of cleaning wheel, and then cleans, guarantees double glazing's clean and tidy nature.

A second groove 21 is formed in the side wall of the surrounding groove 13, and the top end of the second groove 21 is positioned at the opening end; two ends of a rotating shaft on the cleaning wheel 2 extend into the second groove 21 and are fixedly connected with a first gear 22; a second gear 23 is fixedly connected to the inner wall of the second groove 21 through a rotating shaft; the second gear 23 and the first gear 22 are meshed with each other, and the diameter of the second gear 23 is larger than that of the first gear 22; a rack layer 24 is fixedly connected to the side wall of the surrounding groove 13 of the protective door 12, the rack layer 24 extends into the second groove 21, and the second gear 23 is meshed with the rack layer 24; the during operation, when protection door 12 reciprocated, can drive second gear 23 through rack layer 24 this moment and rotate, second gear 23 rotates and can drive first gear 22 and rotate, and through rack layer 24, under the interact of second gear 23 and first gear 22, can drive the moving direction of cleaning wheel 2 direction of rotation and protection door 12 opposite, can further strengthen the cleaning of cleaning wheel 2 to observation window 19 on the protection door 12, and second gear 23 is greater than first gear 22, can further improve the rotational speed of cleaning wheel 2, improve and clean efficiency.

The cleaning wheel 2 comprises an inner wheel 3 and an elastic layer 31; the inner wheel 3 and the elastic layer 31 are connected through a support; the support comprises a support plate 32; a group of supporting plates 32 are fixedly connected to the inner wall of the elastic layer 31; the supporting plate 32 is fixedly connected to the inner wheel 3 through an elastic sheet; a sponge layer is fixedly connected to the outer layer of the elastic layer 31; the during operation, when protective door 12 reciprocated, the rotation can take place for cleaning wheel 2 this moment and clean the double glazing of observation window 19 on protective door 12, has elastic layer 31 through the cleaning wheel 2 that sets up, when cleaning wheel 2 and protective door 12 contacted, elastic layer 31 received the extrusion this moment, not only can increase the contact range of cleaning wheel 2 and protective door 12, can also further strengthen the cleaning effect.

The bottom end of the supporting plate 32 is fixedly connected with a vibration plate 33 through a fixing column; the bottom end of the vibration plate 33 is fixedly connected with a magnetic ball 34 through an elastic rope; a magnetic seat 35 is fixedly connected to the position of the inner wheel 3 relative to the magnetic ball 34; the magnetic ball 34 and the magnetic base 35 are mutually attracted; the during operation, when cleaning wheel 2 cleans double glazing, elastic layer 31 and double glazing's contact point this moment, elastic layer 31 can receive the extrusion, elastic layer 31 receives the extrusion, backup pad 32 of extrusion department removes to cleaning wheel 2 central point this moment, magnetic ball 34 can adsorb on magnetic base 35 this moment, cleaning wheel 2 rotatory backs, extruded backup pad 32 can be reconversion under the effect of flexure strip, magnetic ball 34 is taut by the elastic cord this moment, when backup pad 32 reconversion, the elasticity of elastic cord is greater than the mutual appeal of magnetic ball 34 and magnetic base 35 this moment, magnetic ball 34 can be under the effect of elastic cord this moment, strike vibrations board 33, vibrations board 33 vibrations can drive elastic layer 31 and sponge layer and vibrate, can clear away some impurity that depends on at the sponge layer, keep the effect of cleaning of sponge layer.

A group of second cavities 36 are formed in the inner wheel 3, and oil removal agents are arranged in the second cavities 36; a group of third cavities 37 are formed in the inner wheel 3, the third cavities 37 are connected with a pressing plate 39 in a sliding mode, and a connecting column 38 is fixedly connected to the side wall of the pressing plate 39; the connecting column 38 penetrates through the second cavity 36 and is fixedly connected to the sponge layer; the connecting column 38 is hollow; a storage bag 391 is arranged between the second cavity 36 and the pressure plate 39; one end of the storage bag 391 is communicated with the second cavity 36 through a hose, the other end of the storage bag 391 is communicated with the hollow cavity of the connecting column 38 through a hose, and the hoses are all provided with one-way valves; the during operation, when cleaning wheel 2 received the extrusion, can promote spliced pole 38 this moment and drive clamp plate 39 and remove in third cavity 37, extrude storage bag 391, the deoiling agent of storage bag 391 can get into the well cavity of spliced pole 38 through the hose, in getting into the cavernosum, the cavernosum in situ is filled with the deoiling agent, can further increase the effect of cleaning to double glazing greasy dirt, because of being equipped with the check valve in the hose, the flow direction of deoiling agent gets into storage bag 391 for second cavity 36, in getting into spliced pole 38, in getting into the cavernosum.

The inner wall of the door slot 11 is fixedly connected with an arc-shaped plate 4 through a fixing column; the arc-shaped plate 4 covers the cleaning wheel 2, and a cleaning piece is arranged in the arc-shaped plate 4; the during operation covers cleaning wheel 2 through setting up arc 4, can prevent that some impurity and greasy dirt in the lathe bed 1 from directly depending on cleaning wheel 2, and when cleaning wheel 2 was rotatory, the impurity on the cleaning wheel 2 can be at the effect of centrifugal force and the separation of cleaning wheel 2, and arc 4 can prevent the indiscriminate of impurity and fly. And a collecting box 41 is fixedly connected at the bottom end of the arc-shaped plate 4, and impurities thrown off from the cleaning wheel 2 can enter the collecting cavity through the arc-shaped plate 4.

The sweeper includes a fourth cavity 42; the fourth cavity 42 is communicated with the side wall of the arc-shaped plate 4 through a through hole; a push plate 44 is fixedly connected to the side wall of the fourth cavity 42 close to the inner wall of the arc-shaped plate 4 through a telescopic rod 43, a group of cleaning brushes 45 are fixedly connected to the push plate 44, and the cleaning brushes 45 enter and exit the arc-shaped plate 4 through holes; a layer of shock absorption pad 46 is fixedly connected to the bottom of the surrounding groove 13, and a group of fifth cavities 47 are formed in the shock absorption pad 46; the fifth cavity 47 is communicated with the telescopic rod 43 through a hose, and the telescopic rod 43 extends through inflation; when the protective door 12 moves up and down, the shock pad 46 has elasticity, the fifth cavity 47 in the shock pad 46 can absorb gas in the telescopic rod 43 through the hose, at the moment, the telescopic rod 43 contracts to drive the push plate 44 to move, the push plate 44 moves to drive the cleaning brush 45 on the push plate 44 to enter the arc-shaped plate 4 through the through hole, and impurities are cleaned by the rotating cleaning wheel 2; when cleaning wheel 2 reversal, the impurity on the cleaning wheel 2 can clean through cleaning brush 45 this moment, but when cleaning wheel 2 corotation, the impurity can pile up on cleaning brush 45 on cleaning wheel 2 this moment, and it can depend on cleaning brush 45 line still to be rare impurity, so when guard gate 12 closes completely, can extrude fifth cavity 47 in the shock pad 46 earlier, gas in the fifth cavity 47 can get into in the telescopic link 43, telescopic link 43 extension can drive and clean brush 45 and get into the through-hole, when cleaning brush 45 and remove, impurity can be clear away by the through-hole, carry out the automatically cleaning to cleaning brush 45, guarantee to clean the effect of cleaning of brush 45.

A sixth cavity 5 is formed in the surrounding groove 13; the bottom end of the sixth cavity 5 is fixedly connected with a first conductive plate 51 through a spring; the top end of the sixth cavity 5 is fixedly connected with a second conductive plate 52 through a spring; the top end of the second conductive plate 52 is fixedly connected with a compression leg 53, and the compression leg 53 extends into the surrounding groove 13; the during operation, when guard gate 12 is closed completely, guard gate 12 can extrude compression leg 53 this moment, and compression leg 53 moves down and can drive first current conducting plate 51 and second current conducting plate 52 and carry out the contact circular telegram, just can work in the digit control machine tool this moment, when guard gate 12 was opened, second current conducting plate 52 and first current conducting plate 51 can take place the separation this moment, place when guard gate 12 was opened, and the digit control machine tool can also work, improves the operating safety factor of digit control machine tool.

Example two:

referring to fig. 9, in a first comparative example, as another embodiment of the present invention, a collecting box 41 is fixedly connected to the bottom end of the arc-shaped plate 4; during operation, the collecting box 41 is fixedly connected to the bottom end of the arc-shaped plate 4, and impurities thrown away from the cleaning wheel 2 and impurities cleaned through the cleaning brush 45 can enter the collecting cavity through the arc-shaped plate 4.

The working principle is as follows: when a product is placed on the numerical control machine tool to be opened, a motor 18 is started, the motor 18 rotates and drives a lead screw 17 to rotate forwards through a chain wheel, the lead screw 17 rotates forwards to drive a moving block 16 to move upwards in a first groove 15, the moving block 16 moves to drive a protective door 12 to move upwards, the protective door 12 is opened upwards, after the product is placed in a machine tool body 1, the lead screw 17 is driven to rotate backwards by the rotation of the motor 18, the lead screw 17 rotates backwards to drive the moving block 16 to move downwards in the first groove 15, the moving block 16 moves to drive the protective door 12 to move downwards, the protective door 12 is closed, the numerical control machine tool is started to work, the protective door 12 is driven to rotate by the motor 18 to drive the lead screw 17 to drive the protective door 12 to move upwards and downwards to be opened and closed, the working space of the protective door 12 is the upper side of the machine tool body 1, the numerical control machine tool with small working space or smaller working space can be suitable, and double-layer glass is arranged on an observation window 19 on the protective door 12, so that the working condition of the machine tool can be conveniently observed, and the noise emission can be further reduced; when the protective door 12 moves up and down, the rack layer 24 drives the second gear 23 to rotate, the second gear 23 rotates to drive the first gear 22 to rotate, and the rack layer 24, the second gear 23 and the first gear 22 interact to drive the cleaning wheel 2 to rotate in a direction opposite to the moving direction of the protective door 12, so that the cleaning of the cleaning wheel 2 on the observation window 19 on the protective door 12 can be further enhanced, and the second gear 23 is larger than the first gear 22, so that the rotating speed of the cleaning wheel 2 can be further increased, and the cleaning efficiency is improved; when the cleaning wheel 2 cleans the double-layer glass, at the moment, the elastic layer 31 can be extruded at the contact point of the elastic layer 31 and the double-layer glass, the elastic layer 31 is extruded, the supporting plate 32 at the extrusion part moves towards the central point of the cleaning wheel 2, the magnetic ball 34 can be adsorbed on the magnetic seat 35 at the moment, after the cleaning wheel 2 rotates, the extruded supporting plate 32 can restore under the action of the elastic sheet, the magnetic ball 34 is tensioned by the elastic rope at the moment, when the supporting plate 32 restores the original shape, the elasticity of the elastic rope is greater than the mutual attraction of the magnetic ball 34 and the magnetic seat 35 at the moment, the magnetic ball 34 can impact the vibration plate 33 under the action of the elastic rope at the moment, the vibration plate 33 can drive the elastic layer 31 and the sponge layer to vibrate, impurities attached to the sponge layer can be removed, and the cleaning effect of the sponge layer is kept; when the cleaning wheel 2 is extruded, the connecting column 38 is pushed to drive the pressing plate 39 to move in the third cavity 37, the storage bag 391 is extruded, the degreasing agent in the storage bag 391 enters the hollow cavity of the connecting column 38 through the hose, and the degreasing agent is filled in the sponge layer when entering the sponge layer, so that the cleaning effect on greasy dirt on the double-layer glass can be further improved; the cleaning wheel 2 is covered by the arc-shaped plate 4, so that impurities and oil stains in the machine body 1 can be prevented from being directly attached to the cleaning wheel 2, the impurities on the cleaning wheel 2 can be separated from the cleaning wheel 2 under the action of centrifugal force when the cleaning wheel 2 rotates, the arc-shaped plate 4 can prevent the impurities from flying in a mess, the bottom end of the arc-shaped plate 4 is fixedly connected with the collecting box 41, and the impurities thrown away from the cleaning wheel 2 can enter the collecting cavity through the arc-shaped plate 4; when protective door 12 closed completely, protective door 12 can extrude compression leg 53 this moment, and compression leg 53 moves down and can drive first current conducting plate 51 and second current conducting plate 52 and carry out the contact circular telegram, just can carry out work in the digit control machine tool this moment, when protective door 12 was opened, second current conducting plate 52 and first current conducting plate 51 can take place to separate this moment, place when protective door 12 was opened, the digit control machine tool can also work, improves the work safety factor of digit control machine tool.

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.

Claims

1. A noise reduction protection door of a numerical control machine tool is characterized by comprising a machine body (1); a door groove (11) is formed in the side wall of the lathe bed (1), and a surrounding groove (13) is formed in the side wall of the door groove (11); the surrounding groove (13) is connected with a protective door (12) in a sliding way; an observation window (19) is formed in the protective door (12), and double-layer glass is fixedly connected in the observation window (19); a first cavity (14) is formed in the bottom of the surrounding groove (13), and first grooves (15) are formed in the bottoms of the two sides of the surrounding groove (13); a lead screw (17) is rotatably connected to the side wall of the top end of the first groove (15), the bottom end of the lead screw (17) extends into the first cavity (14), and a chain wheel is fixedly connected to a lever of the lead screw (17) extending into the first cavity (14); the chain wheels are driven by a transmission chain; a motor (18) is fixedly connected to the first cavity (14), and the output end of the motor (18) is connected with a screw rod (17); a moving block (16) is connected in the first groove (15) in a sliding manner, and the moving block (16) is fixedly connected to the side wall of the protective door (12); the lead screw (17) and the moving block (16) are connected with each other through a lead screw nut pair;

the side walls of the two sides of the door slot (11) are rotatably connected with rotating shafts, and cleaning wheels (2) are fixedly connected on the rotating shafts; when the protective door (12) is opened and closed, the cleaning wheels (2) are contacted with the inner wall of the double-layer glass of the observation window (19);

a second groove (21) is formed in the side wall of the surrounding groove (13), and the top end of the second groove (21) is positioned at the opening end; two ends of a rotating shaft on the cleaning wheel (2) extend into the second groove (21) and are fixedly connected with a first gear (22); a second gear (23) is fixedly connected to the inner wall of the second groove (21) through a rotating shaft; the second gear (23) and the first gear (22) are meshed with each other, and the diameter of the second gear (23) is larger than that of the first gear (22); a rack layer (24) is fixedly connected to the side wall of the surrounding groove (13) of the protective door (12), the rack layer (24) extends into the second groove (21), and the second gear (23) and the rack layer (24) are meshed with each other;

the cleaning wheel (2) comprises an inner wheel (3) and an elastic layer (31); the inner wheel (3) and the elastic layer (31) are connected through a support; the support comprises a support plate (32); a group of supporting plates (32) are fixedly connected to the inner wall of the elastic layer (31); the supporting plate (32) is fixedly connected to the inner wheel (3) through an elastic sheet; a sponge layer is fixedly connected to the outer layer of the elastic layer (31);

the bottom end of the supporting plate (32) is fixedly connected with a vibration plate (33) through a fixing column; the bottom end of the vibrating plate (33) is fixedly connected with a magnetic ball (34) through an elastic rope; a magnetic seat (35) is fixedly connected to the position of the inner wheel (3) relative to the magnetic ball (34); the magnetic ball (34) and the magnetic seat (35) are mutually attracted.

2. The noise reduction guard door of the numerical control machine tool is characterized in that a group of second cavities (36) are formed in the inner wheel (3), and oil removal agents are arranged in the second cavities (36); a group of third cavities (37) is formed in the inner wheel (3), the third cavities (37) are connected with a pressing plate (39) in a sliding mode, and connecting columns (38) are fixedly connected to the side walls of the pressing plate (39); the connecting column (38) penetrates through the second cavity (36) and is fixedly connected to the sponge layer; the connecting column (38) is hollow; a storage bag (391) is arranged between the second cavity (36) and the pressure plate (39); one end of the storage bag (391) is communicated with the second cavity (36) through a hose, the other end of the storage bag is communicated with the cavity of the connecting column (38) through a hose, and the hoses are internally provided with one-way valves.

3. The noise reduction protection door for the numerical control machine tool as claimed in claim 2, wherein an arc-shaped plate (4) is fixedly connected to the inner wall of the door slot (11) through a fixing column; the arc-shaped plate (4) covers the cleaning wheel (2), and a cleaning piece is arranged in the arc-shaped plate (4); the bottom end of the arc-shaped plate (4) is fixedly connected with a collecting box (41).

4. -noise reduction guard door for numerical control machines according to claim 3, characterized in that said sweeper comprises a fourth cavity (42); the fourth cavity (42) is communicated with the side wall of the arc-shaped plate (4) through a through hole; a push plate (44) is fixedly connected to the side wall, close to the inner wall of the arc-shaped plate (4), in the fourth cavity (42) through a telescopic rod (43), a group of cleaning brushes (45) are fixedly connected to the push plate (44), and the cleaning brushes (45) enter and exit the arc-shaped plate (4) through holes; a layer of shock absorption pad (46) is fixedly connected to the bottom of the surrounding groove (13), and a group of fifth cavities (47) is formed in the shock absorption pad (46); the fifth cavity (47) is communicated with the telescopic rod (43) through a hose, and the telescopic rod (43) extends through inflation.

5. The noise reduction guard door for the numerical control machine tool according to claim 4, characterized in that a sixth cavity (5) is formed in the surrounding groove (13); the bottom end of the sixth cavity (5) is fixedly connected with a first conductive plate (51) through a spring; the top end of the sixth cavity (5) is fixedly connected with a second conductive plate (52) through a spring; the top end of the second conductive plate (52) is fixedly connected with a compression leg (53), and the compression leg (53) extends into the surrounding groove (13).

6. The noise reduction guard door of the numerical control machine tool according to claim 5, characterized in that a collecting box (41) is fixedly connected to the bottom end of the arc-shaped plate (4).