CN111152456A

CN111152456A - Scraper device and photocuring equipment with same

Info

Publication number: CN111152456A
Application number: CN202010039190.3A
Authority: CN
Inventors: 王建立
Original assignee: Hengtong Xijiao Intelligent Machine Guangdong Co Ltd
Current assignee: Hengtong Xijiao Intelligent Machine Guangdong Co Ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-05-15
Anticipated expiration: 2040-01-14
Also published as: CN111152456B

Abstract

The invention relates to the technical field of printing of photocuring equipment, in particular to a scraper device and photocuring equipment with the same, wherein the scraper device comprises a scraper body and an air extractor, a cavity is arranged in the scraper body, and one side of the scraper body, which is used for scraping the liquid level, is provided with a liquid inlet notch for feeding liquid into liquid resin; the air extracting device is communicated with the cavity of the scraper body to extract air in the cavity so that liquid resin is sucked into the cavity of the scraper body under the action of negative pressure; when the liquid level was less than the scraper lower limb, photosensitive resin in the scraper body cavity can flow out to the liquid level, guarantees liquid level and scraper lower limb parallel and level, and photosensitive resin is difficult for the gassing, has improved the effect of printing.

Description

Scraper device and photocuring equipment with same

Technical Field

The invention relates to the technical field of printing of photocuring equipment, in particular to a scraper device and photocuring equipment with the same.

Background

At present, the photocuring rapid prototyping technology is a typical layer-by-layer manufacturing method, photosensitive resin is used as a raw material, and the photosensitive resin is cured by ultraviolet light in a liquid state to form a solid part. Under the control of a computer, an ultraviolet laser scans the liquid surface of corresponding materials such as liquid photosensitive resin point by point according to the layered section information of the part, and the liquid photosensitive resin in the scanned area is cured through photopolymerization reaction to form a layered section of the part; after one layer is cured, the working platform descends by a distance equal to the thickness of the layer, the mechanical device controls the scraper to move, a new layer of liquid photosensitive resin is coated on the layering section of the part cured previously, then the computer controls the laser to scan the next layering section, and the layers are tightly connected and gaps among the layers are eliminated. Repeating the steps until the whole part is molded. The method can be used for manufacturing sample pieces with any complex structures. The printing efficiency and effect of the light curing equipment are directly related to bubbles on the surface of the photosensitive resin, and the bubbles in the liquid photosensitive resin can cause a large number of bubble holes in printed parts, so that the quality of the formed parts is reduced.

The conventional bubble removing method is to adopt a traditional mechanical scraper body to scrape the liquid level to remove bubbles, when liquid photosensitive resin is to overflow the layering section of a solidified part, the hard scraper body may cause the photosensitive resin to fail to completely cover the part due to insufficient amount of the photosensitive resin when the hard scraper body scrapes the part, so that the bubbles still exist, the bubbles are not easy to remove, the liquid level of the photosensitive resin needs to be scraped again, the printing process time is prolonged, and the printing effect is poor. In view of the above disadvantages, the invention provides a scraper device and a photo-curing apparatus having the same, which can reduce the generation of bubbles during photo-curing and improve the printing effect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a scraper device and a light curing device with the same.

The invention aims to: the scraper body can reduce the generation of air bubbles in the photosensitive resin when the liquid photosensitive resin is scraped.

The second purpose of the invention is that: reduce the quantity of the inside bubble of photocuring fashioned part, promote the quality of printing effect and part.

The above object of the present invention is achieved by the following technical solutions:

a doctor apparatus, comprising:

the scraper comprises a scraper body, wherein a cavity is arranged in the scraper body, and a liquid inlet notch for feeding liquid into liquid resin is formed in one side of the scraper body for scraping the liquid level;

and the air extracting device is communicated with the cavity of the scraper body to extract air in the cavity, so that the liquid resin is sucked into the cavity of the scraper body under the action of negative pressure.

By adopting the technical scheme, when the liquid level of the photosensitive resin is higher than one side of the scraper body for leveling the liquid level, the air exhaust device exhausts air from the cavity of the scraper body, so that negative pressure is formed in the cavity, the liquid is adsorbed into the cavity of the scraper body under the action of atmospheric pressure, and the liquid level is flush with one side of the scraper body for leveling the liquid level; when the liquid level of photosensitive resin is less than the scraper lower edge, the air pressure inside the green grape is equal to the atmospheric pressure, so that the photosensitive resin in the cavity flows out of the cavity under the action of self gravity until the liquid level is parallel and level with the liquid level of the photosensitive resin, the liquid level of the photosensitive resin and one side of the scraper body for scraping the liquid level can be always guaranteed to be parallel and level, the liquid level of the scraper body is always reduced in air contact, and bubbles can be reduced.

The present invention in a preferred example may be further configured to: the scraper body comprises a knife rest, a knife body and a scraper lower edge for scraping the liquid level.

The knife body comprises a knife back and knife sides integrally connected with two sides of the knife back, and the two knife sides are arranged in parallel;

the back of a knife blade and sword side both ends be the integral connection respectively have the blind end, the cavity is formed by the space that encloses between blind end, the back of a knife blade and the sword side, the feed liquor notch is formed by one side that the back of a knife blade was kept away from to two sword sides, the blade is connected with the knife rest in one side of tank bottom, the blade is connected along under screw and the scraper on the side of notch.

Through adopting above-mentioned technical scheme, because back of a knife blade, sword side and blind end body coupling of blade, consequently when the lower edge of scraper body was parallel and level mutually with the liquid level, there was good gas tightness blade inside, and gas is difficult for revealing from the gap between back of a knife blade, sword side or the blind end, therefore the photosensitive resin of being convenient for is pressed into the inside of cavity by atmospheric pressure.

The present invention in a preferred example may be further configured to: an observation window used for observing the height position of the liquid level in the cavity is arranged on the cutter body, and transparent glass is connected to the periphery of the observation window in a sealing mode.

Through adopting above-mentioned technical scheme, observation window can be convenient for observe the liquid level height of cavity inside, is convenient for regulate and control the degree of the evacuation of air exhaust device to the cavity.

The present invention in a preferred example may be further configured to: the utility model also comprises an adjusting mechanism used for adjusting the distance between the knife body and the knife rest.

Through adopting above-mentioned technical scheme, adjustment mechanism can adjust the distance between blade and the knife rest, and when the drum pounding position of knife rest was fixed, adjustment mechanism can adjust the distance between blade to the liquid level, easily makes the scraper device at the during operation, and the liquid level surpasses the scraper and follows down, reduces the production of bubble in the photosensitive resin.

The present invention in a preferred example may be further configured to: the adjusting mechanism comprises an adjusting screw rod and an adjusting nut, one end of the adjusting screw rod is detachably fixed on the cutter body, a communicating hole is communicated in the cutter frame, the adjusting screw rod penetrates through the communicating hole, a nut seat is arranged on the periphery of the communicating hole of the cutter frame, the adjusting nut is rotatably connected with the nut seat, and the adjusting nut is in threaded fit with the adjusting screw rod.

By adopting the technical scheme, the adjusting nut is rotated, the adjusting screw rod can reciprocate along the length direction of the adjusting screw rod, and the tool rest is connected with the tool body through the adjusting screw rod, so that when the distance between the adjusting screw rod protruding out of the adjusting nut is increased, the distance between the tool rest and the tool body is reduced; when the distance between the adjusting screw rod and the adjusting nut is reduced, the distance between the tool rest and the tool body is increased.

The present invention in a preferred example may be further configured to: the nut seat can be divided into a first nut half seat and a second nut half seat, the side surfaces of the first nut half seat and the second nut half seat are respectively provided with a rotating half groove, and the side surfaces of the first nut half seat and the second nut half seat, which are away from the rotating half grooves, are provided with a rotating half hole; the rotating half grooves of the first nut half seat and the second nut half seat are spliced to form a rotating circular groove, and the rotating circular holes are spliced to form a rotating circular hole.

By adopting the technical scheme, the nut seat can be disassembled into the first nut half seat and the second nut half seat, so that the sequential importance of the assembling time is weakened, and the assembly of the adjusting mechanism is facilitated.

The present invention in a preferred example may be further configured to: one side that the back of a knife blade deviates from the cavity is provided with the chucking groove, the both ends in chucking groove all have the opening, adjusting screw one end is provided with the chucking end, the chucking end is fixed mutually with the chucking groove, and adjusting screw is fixed with fixation nut in the notch department in chucking groove, the flaring groove has been seted up at the one end of intercommunicating pore to the knife rest, fixation nut is located the flaring inslot.

Through adopting above-mentioned technical scheme, the both ends in chucking groove all are provided with the opening, therefore the chucking end can be directly follow the opening card in chucking groove in the chucking groove of the back of a knife blade, the adjusting screw of being convenient for and the assembly of blade, and fixation nut can support adjusting screw tightly simultaneously for adjusting screw is difficult not hard up in the blade.

The present invention in a preferred example may be further configured to: the cutter frame is characterized in that the openings at the two ends of the clamping groove are abutted with stop blocks, and the stop blocks are fixed with the side surfaces of the cutter frame through bolts.

Through adopting above-mentioned technical scheme, the backstop piece can shelter from the opening of chucking groove both sides for the chucking end is difficult for deviating from the opening of chucking groove.

The present invention in a preferred example may be further configured to: the air extractor comprises a booster pump, a vacuum generator and an exhaust tube, an air pipe connector is arranged on the closed end and is communicated with the exhaust tube, the vacuum generator comprises an air outlet positioned in the middle section and vacuum ports and air supply ports positioned at two ends, one end of each air supply port is communicated with the corresponding air pipe connector through the exhaust tube, and the vacuum ports are connected with a driving air inlet of the booster pump through the exhaust tube.

Through adopting above-mentioned technical scheme, booster pump and exhaust tube intercommunication to through the exhaust tube to cavity evacuation, the high velocity air through vacuum generator will be followed air outlet and discharged partly, and continue under the bleeding of booster pump, the inside air volume of cavity is constantly compressed, thereby the scraper body is used for strickleing off under the condition that one side and the liquid level of liquid level flush mutually, and liquid photosensitive resin is inhaled inside the cavity.

The second aim of the invention is realized by the following technical scheme:

a light-curing device comprising the doctor blade assembly of any of the above.

Through adopting above-mentioned technical scheme, install foretell scraper device in the photocuring equipment, consequently the fashioned part of photocuring equipment is inside to be difficult for producing the bubble, promotes the quality of printing effect and part.

In summary, the invention includes at least one of the following beneficial technical effects:

when the liquid level of the photosensitive resin is higher than one side of the scraper body for scraping the liquid level, the air extractor extracts air from the cavity of the scraper body to form negative pressure in the cavity, the liquid is adsorbed into the cavity of the scraper body under the action of atmospheric pressure, the liquid level of the photosensitive resin and one side of the scraper body for scraping the liquid level can be always kept level, and the liquid level passing through the scraper body always reduces the contact of air, so that the generation of bubbles can be reduced, and the printing effect can be improved;

the adjusting mechanism can adjust the distance between the knife body and the knife rest, so that the distance between the knife body and the liquid level can be conveniently adjusted, and one side of the scraper body, which is used for scraping the liquid level, is flush with the liquid level;

the air extractor comprises a vacuum generator, the structure of the vacuum generator is small and exquisite, and the air effect of the cavity is better when the air extractor is used.

Drawings

Fig. 1 is a schematic overall structural diagram of a scraper device and a light curing apparatus structure having the scraper device according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a doctor apparatus according to an embodiment of the present invention;

FIG. 3 is a perspective view of a blade according to one embodiment of the present invention;

FIG. 4 is an enlarged view of the invention taken along section A of FIG. 2;

FIG. 5 is a top view of a doctor apparatus according to an embodiment of the invention;

FIG. 6 is a cross-sectional view of the present invention taken along the line B-B in FIG. 5;

FIG. 7 is a schematic view of an adjusting screw according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of an adjusting nut according to an embodiment of the present invention;

FIG. 9 is a schematic view of a stopper provided in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of a first nut half carrier according to one embodiment of the present invention;

fig. 11 is a schematic structural view of a second nut half seat according to an embodiment of the present invention.

Reference numerals: 1. the scraper comprises a scraper body, 11, a cutter holder, 111, a communication hole, 112, a flaring groove, 12, a cutter body, 121, a cutter side, 122, a cutter back, 123, a clamping groove, 124, a closed end, 125, an air pipe connecting port, 126, a mounting hole, 13, a scraper lower edge, 131, a strip-shaped groove, 132, a cutter edge, 14, an observation window, 141, transparent glass, 142, a mounting frame, 2, an air extraction device, 21, a booster pump, 211, a driving air inlet, 22, a vacuum generator, 221, an air outlet, 222, a vacuum port, 223, an air supply port, 23, an air extraction pipe, 3, an adjusting mechanism, 31, an adjusting screw rod, 311, a clamping end, 32, an adjusting nut, 321, a rotating clamping end, 322, a scale ring, 33, a nut seat, 331, a first nut half seat, 332, a second nut half seat, 333, a rotating circular groove, 334, a rotating circular hole 34, a fixing nut, 35 and a stop block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a blade device and a light curing apparatus having the same provided by the present invention include a blade body 1 and an air extractor 2.

The scraper body 1 comprises a blade holder 11, a blade 12 and a scraper lower edge 13 for scraping the liquid level. Wherein the knife rest 11, the knife body 12 and the lower edge 13 of the scraper are detachably assembled. Further, the blade holder 11, the blade 12, and the lower edge 13 may be made of an aluminum alloy material, or may be made of a material such as stainless steel or plastic.

Referring to fig. 2 and 3, the blade 12 includes a blade back 122 and a blade side 121, the blade side 121 and two sides of the blade back 122 are integrally connected, the two blade sides 121 are parallel to each other, and two ends of the blade back 122 and two ends of the blade sides 121 are respectively integrally connected to a closed end 124. The space enclosed among the closed end 124, the knife back 122 and the knife side 121 forms a cavity, the knife side 121, the knife back 122 and the closed end 124 are all integrally connected, and the air tightness inside the cavity is good. Blade 12 defines a feed slot opening on both blade sides 121 distal from blade back 122. The liquid photosensitive resin can enter the cavity from the liquid inlet notch.

Further, the knife body 12 is provided with an observation window 14 for observing the liquid level position inside the cavity, the observation window 14 is in the shape of an annular runway, and the periphery of the observation window 14 is hermetically connected with a transparent glass 141, in a specific application example, the periphery of the transparent glass 141 is fixed with a mounting frame 142 through glass cement, and the mounting frame 142 is fixed on the periphery of the observation window 14 through sealant.

Referring to fig. 2 and 4, the lower edge 13 of the scraper is elongated, and a row of threaded holes are formed in the lower edge 13 of the scraper. Correspondingly, two sword sides 121 are provided with one row of screw hole in one side of feed liquor notch, and the screw hole quantity of the screw hole of edge 13 under the scraper is corresponding, the interval of arranging equals with the screw hole quantity of two sword sides 121 to there is the screw to cooperate with the screw hole, makes under the scraper along 13 be fixed in on the side that two sword sides 121 kept away from each other.

Further, still be provided with bar recess 131 under the scraper on 13, bar recess 131 is rectangular form, and the length direction of edge 13 is consistent under the length direction of bar recess 131 and the scraper, the slope sets up between the inside wall of bar recess 131 and the tank bottom of bar recess 131, the inside wall and the tank bottom of bar recess 131 are the obtuse angle setting in the terminal surface direction, the inside wall border of bar recess 131 extends to the side of edge 13 under the scraper, make and form cutting edge 132 under the inside wall of bar recess 131 one side and the scraper between the border of edge 13, when scraping the liquid level, cutting edge 132 can scrape the bubble that the liquid level surface exists brokenly, and the bubble is attached to in bar recess 131, the effect of printing is difficult for influencing.

The knife rest 11 is connected with the knife back 122 through an adjusting mechanism 3, wherein the adjusting mechanism 3 is used for adjusting the distance between the knife body 12 and the knife rest 11, so as to adjust the height between the knife body 12 and the liquid level.

Referring to fig. 2 and 6, the adjusting mechanism 3 includes an adjusting screw 31 (see fig. 7) and an adjusting nut 32 (see fig. 8), and one end of the adjusting screw 31 is detachably fixed to the blade 12. Furthermore, a clamping groove 123 is formed in one side of the knife back 122, which is away from the cavity, a notch of the clamping groove 123 is formed in the surface of the knife back 122, and the clamping groove 123 penetrates through two side edges of the knife back 122 and forms an opening; one end of the adjusting screw 31 is provided with a clamping end 311, the clamping end 311 is placed into the clamping groove 123 from the opening of the clamping groove 123, and the clamping end 311 and the clamping groove 123 are in clamping fit with each other. In order to fix the adjusting screw 31 to the blade 12, the adjusting screw 31 is threadedly connected with a fixing nut 34 at the notch of the clamping groove 123, and the fixing nut 34 abuts against the blade back 122. The tool holder 11 has a flared groove 112 formed at one end of the communication hole 111, and the fixing nut 34 is positioned in the flared groove 112. The tool holder 11 has a through hole 111, and the adjusting screw 31 is inserted into the through hole 111 such that one end of the adjusting screw 31 protrudes from the tool holder 11, the tool holder 11 has a nut seat 33 provided around the through hole 111, the adjusting nut 32 is rotatably connected to the nut seat 33, and the adjusting nut 32 is screwed to the adjusting screw 31.

In order to further prevent the adjusting screw 31 from easily coming out of the openings at the two ends of the clamping groove 123, stop blocks 35 (see fig. 9) are fixed on the two side surfaces of the tool holder 11 through bolts, the stop blocks 35 are block-shaped, and the stop blocks 35 are tightly attached to the side surfaces of the tool holder 11. The stop block 35 extends to the side of the knife body 12, and the stop block 35 covers the opening of the clamping groove 123, so that the adjusting screw 31 is not easy to slip out from the opening of the clamping groove 123.

Further, the nut seat 33 can be divided into a first nut half seat 331 (see fig. 10) and a second nut half seat 332 (see fig. 11), wherein the side surfaces of the first nut half seat 331 and the second nut half seat 332 are both provided with a half rotating groove, and the half rotating groove is semicircular; half seat 331 of first nut and half seat 332 of second nut deviate from the side of rotating half-groove and have seted up the rotation semicircle orifice, rotate semicircle orifice semicircular in shape to half seat 331 of first nut and half seat 332 of second nut correspond respectively the rotation semicircle orifice with rotate the coaxial setting of semicircle orifice, the diameter of rotating the semicircle orifice is greater than the diameter of rotating the semicircle orifice. The first nut half base 331 and the second nut half base 332 are spliced together, so that the two rotating half slots are spliced together to form a rotating circular slot 333, and the rotating circular holes are spliced to form a rotating circular hole 334.

Further, bolt holes are formed in the first nut half seat 331 and the second nut half seat 332, and bolts penetrate through the first nut half seat 331 and the second nut half seat 332 and are in threaded fit with the tool holder 11, so that the nut seat 33 and the tool holder 11 are fixed.

Referring to fig. 6 and 8, a threaded hole is penetrated in the adjusting nut 32, and one end of the adjusting nut 32 is provided with a rotation catching end 321, the rotation catching end 321 of the adjusting nut 32 is caught in a rotation round groove 333 of the nut holder 33, and the other end of the adjusting nut 32 passes through a rotation round hole 334, and the adjusting nut 32 is provided with a scale ring 322 on the circumference side of the outer portion of the nut holder 33, the scale ring 322 being used for precisely adjusting the angle of rotation of the adjusting nut 32. The end of the adjusting screw 31 protruding from the tool holder 11 is threadedly engaged with an adjusting nut 32.

Referring to fig. 2, the air extractor 2 is communicated with the cavity of the scraper body 1. Further, the air extracting device 2 can extract air inside the cavity, so that the liquid resin is sucked into the cavity of the scraper body 1 under the action of negative pressure. The gas-withdrawal device 2 may be a vacuum pump. In a specific example, the gas exhaust device 2 includes a booster pump 21, a vacuum generator 22, and an exhaust pipe 23.

The vacuum generator 22 is in a cylindrical shape, the vacuum generator 22 has an air exhaust port 221, a vacuum port 222 at two ends, and an air supply port 223, the air exhaust port 221 is located at a middle section of the vacuum generator 22, and the vacuum port 222 and the air supply port 223 are located at two ends of the vacuum generator 22, respectively, and since the vacuum generator 22 is a prior art, it is not described in detail in this embodiment. The booster pump 21 has a drive air inlet 211. The closed end 124 is provided with a mounting hole 126, an air pipe connecting port 125 (see fig. 3) is embedded in the mounting hole 126, and the air pipe connecting port 125 is communicated with the cavity and the outside of the knife body 12. One end of the air supply port 223 is connected to the air pipe connection port 125 via the air extraction pipe 23, and the vacuum port 222 is connected to the driving air inlet 211 of the booster pump 21 via the air extraction pipe 23. The air pipe connection port 125 is connected to the air suction pipe 23.

The implementation principle of the embodiment is as follows: the scraper device comprises a scraper body 1 and an air extractor 2, and the rapid scraping and bubble removing operation of the photosensitive resin is realized; the scraper body 1 is provided with a blade 12 with a cavity, and the adjusting mechanism 3 between the blade 12 and the knife rest 11 can adjust the distance between the blade 12 and the knife rest 11, so that the height of the liquid level can be conveniently adjusted; the air extractor 2 is composed of a booster pump 21 and a vacuum generator 22, and is used for forming negative pressure to the cavity. The air extracting device 2 can generate negative pressure in the cavity of the scraper, and the photosensitive resin on the liquid level can be adsorbed in the cavity under the action of the negative pressure; when the scraper moves on the liquid level, the photosensitive resin and the liquid level in the scraper cavity can be automatically filled according to the height of the liquid level, so that the liquid level and the lower edge 13 of the scraper are at the same level. Because the liquid level is leveled by adopting the flowing of the liquid, the liquid level is not easy to generate bubbles in the moving process of the scraper body 1, the quantity of the bubbles in the formed parts is reduced, and the printing effect of the photocuring equipment provided with the scraper device can be improved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A scraper device, characterized in that: the method comprises the following steps:

the scraper comprises a scraper body (1), wherein a cavity is arranged in the scraper body (1), and a liquid inlet notch for feeding liquid into liquid resin is formed in one side of the scraper body (1) for scraping the liquid level;

and the air extracting device (2) is communicated with the cavity of the scraper body (1) to extract air in the cavity, so that the liquid resin is sucked into the cavity of the scraper body (1) under the action of negative pressure.

2. A doctor apparatus according to claim 1, characterized in that: the scraper body (1) comprises a scraper frame (11), a scraper body (12) and a scraper lower edge (13) for scraping the liquid level;

the knife body (12) comprises a knife back (122) and knife sides (121) integrally connected with two sides of the knife back (122), and the two knife sides (121) are arranged in parallel;

back of a knife blade (122) and sword side (121) both ends respectively integral connection have blind end (124), the cavity is formed by enclosing the space that becomes between blind end (124), back of a knife blade (122) and sword side (121), the feed liquor notch is formed by one side that back of a knife blade (122) was kept away from to two sword sides (121), blade (12) are connected with knife rest (11) in one side of tank bottom, blade (12) are connected along (13) under through screw and scraper on the side of notch.

3. A doctor apparatus according to claim 2, characterized in that: an observation window (14) used for observing the liquid level height position in the cavity is arranged on the knife body (12), and transparent glass (141) is connected to the periphery of the observation window (14) in a sealing mode.

4. A doctor apparatus according to claim 2, characterized in that: the utility model also comprises an adjusting mechanism (3) used for adjusting the distance between the knife body (12) and the knife rest (11).

5. A doctor apparatus according to claim 4, characterised in that: adjustment mechanism (3) are including adjusting screw (31) and adjusting nut (32), adjusting screw (31) one end can be dismantled and be fixed in blade (12) on, it has intercommunicating pore (111) to link up on knife rest (11), adjusting screw (31) run through in intercommunicating pore (111), knife rest (11) are provided with nut seat (33) along intercommunicating pore (111) week, adjusting nut (32) are connected with nut seat (33) rotation, adjusting nut (32) and adjusting screw (31) screw-thread fit.

6. A doctor apparatus according to claim 5, characterised in that: the nut seat (33) can be divided into a first nut half seat (331) and a second nut half seat (332), the side surfaces of the first nut half seat (331) and the second nut half seat (332) are respectively provided with a rotating half groove, and the side surfaces of the first nut half seat (331) and the second nut half seat (332) departing from the rotating half grooves are respectively provided with a rotating half hole; the rotating half grooves of the first nut half seat (331) and the second nut half seat (332) are spliced to form a rotating circular groove (333), and the rotating circular holes are spliced to form a rotating circular hole (334).

7. A doctor apparatus according to claim 5, characterised in that: one side that the back of a knife blade (122) deviates from the cavity is provided with chucking groove (123), the both ends in chucking groove (123) all have the opening, adjusting screw (31) one end is provided with chucking end (311), chucking end (311) are fixed mutually with chucking groove (123), and adjusting screw (31) are fixed with fixation nut (34) in the notch department in chucking groove (123), flaring groove (112) have been seted up in the one end of intercommunicating pore (111) in knife rest (11), fixation nut (34) are located flaring groove (112).

8. A doctor apparatus according to claim 7, characterised in that: the tool rest (11) is in butt joint with stop blocks (35) at openings at two ends of the clamping groove (123), and the stop blocks (35) are fixed with the side face of the tool rest (11) through bolts.

9. A doctor apparatus according to claim 2, characterized in that: air exhaust device (2) include booster pump (21), vacuum generator (22) and exhaust tube (23), be provided with trachea connector (125) on blind end (124), trachea connector (125) are linked together with exhaust tube (23), vacuum generator (22) are including air discharge port (221) that are located the interlude and vacuum port (222), the air supply mouth (223) that are located both ends, the one end and the trachea connector (125) of air supply mouth (223) are linked together through exhaust tube (23), drive air inlet (211) of vacuum port (222) and booster pump (21) are connected through exhaust tube (23).

10. A light-curing apparatus characterized by: a blade arrangement comprising a blade according to any one of claims 1 to 9.