CN218492127U - Self-cleaning circular knife device of intelligent cutting bed - Google Patents

Abstract

The utility model relates to an intelligent manufacturing and weaving automatic machine tool field, in particular to self-cleaning circular knife device of intelligence cutting bed. The tool bit can roll in the quick and convenient cutting action in fabrics surface for circular knife piece, and the circular knife piece is gas drive moving, saves electric power more, sets up the gas outgoing structure, blows away the debris on the blade, can blow the cutting plane downwards and make it paste on the cutting bed surface. Including a location section of thick bamboo, circle blade holder, location bobbin base portion sets up the circle blade holder, wherein: the circular cutter seat comprises a connecting seat and a circular cutter cutting piece, the connecting seat is provided with a mounting cavity, and the circular cutter cutting piece is mounted in the mounting cavity; the circular cutter cutting piece comprises a circular blade, a pneumatic cutter shaft, a tubular impeller piece and a cutter shaft cover, wherein the pneumatic cutter shaft is provided with the tubular impeller piece, the front end of the tubular impeller piece is provided with the cutter shaft cover by the pneumatic cutter shaft, the cutter shaft cover is provided with a cleaning exhaust hole, and the front end of the cutter shaft cover of the pneumatic cutter shaft is provided with the circular blade; compressed air is discharged from the outlet of the cleaning exhaust hole and blown onto the circular blade to clean the circular blade.

Description

Self-cleaning circular knife device of intelligent cutting bed

Technical Field

The utility model relates to an intelligent manufacturing and weaving automatic machine tool field, in particular to self-cleaning circular knife device of intelligence cutting bed.

Background

At present, when a cutting bed cutting knife in the prior art carries out material cutting, the cutting bed cutting knife is basically a straight blade structure, namely a straight knife which is known in the industry, the straight knife is driven by an electric motor to be pressed down and lifted, the knife can meet the working requirements of leather, cloth and the like, but can not meet the working requirements of textiles with the thickness of less than 3 mm, for example, the patent number is CN201920420369.6, the cutting bed cutting knife comprises an eccentric wheel, an eccentric wheel bracket and a transmission assembly arranged on the eccentric wheel, wherein the eccentric wheel is rotatably arranged on the eccentric wheel bracket, the eccentric wheel is used for being connected with a fixed knife assembly through the transmission assembly and can drive the fixed knife assembly to reciprocate up and down, the transmission assembly comprises a connecting rod, a fixed shaft and a first bearing, one end of the connecting rod is rotatably arranged on the outer surface of the fixed shaft through the first bearing, and the fixed shaft is fixed in an eccentric shaft hole of the eccentric wheel. Therefore, the utility model has the advantages of the structure is simpler, compacter, make things convenient for the dismouting more, wholly more stable, and the precision is higher, process more easily. The situation that the fabric is dragged can be actually found when the cutting surface of the cutter in the structure is narrower, namely the fabric is not fixed well around, the fabric can be dragged backwards by the cutter, so that the ready-made clothes are cut differently; in addition, the knife face of the straight knife needs to be cleaned in a cleaning module after one procedure is finished, so that the production efficiency is reduced.

Disclosure of Invention

An object of the utility model is to provide a self-cleaning circular knife device of intelligence cutting bed, the tool bit can roll in the textile surface fast and convenient action of cutting for circular knife piece, can not pull textile itself moreover, has adopted and has been different from the prior art structure, and the circular knife piece is gas drive moving, saves electric power more, has set up gas outgoing structure, can reach and blow away debris on the circular knife piece and carry out the automatically cleaning, can blow down the cutting plane and make it paste at these two functions on cutting bed surface.

In order to realize the above purpose, the technical scheme of the utility model is that: the utility model provides a self-cleaning circular knife device of intelligence cutting bed, includes a location section of thick bamboo, circular knife seat, and location bobbin base portion sets up circular knife seat, wherein: the circular cutter seat comprises a connecting seat and a circular cutter cutting piece, the connecting seat is provided with an installation cavity, and the circular cutter cutting piece is installed in the installation cavity; the circular cutter cutting part comprises a circular blade, a pneumatic cutter shaft, a tubular impeller part and a cutter shaft cover, wherein the pneumatic cutter shaft is provided with the tubular impeller part, the front end of the tubular impeller part is provided with the cutter shaft cover by the pneumatic cutter shaft, the cutter shaft cover is provided with a cleaning exhaust hole, the front end of the cutter shaft cover of the pneumatic cutter shaft is provided with the circular blade, and the outlet of the cleaning exhaust hole is opposite to the circular blade; the connecting seat is provided with an air duct which is communicated with the mounting cavity, compressed air introduced by the air duct pushes the tubular impeller part to drive the pneumatic cutter shaft to rotate, the circular blade connected with the pneumatic cutter shaft in parallel rotates, and the compressed air is discharged from an outlet of the cleaning exhaust hole and blown onto the circular blade to clean the circular blade and flows downwards under the limitation of the space of the mounting cavity. The technical effect of blowing away impurities on the circular blade can be achieved, and downward blowing can be achieved due to the guiding effect of the blade rotating groove, so that when the circular knife cuts textiles, the cut textile cutting surface can not be drawn into the blade rotating groove, but is attached to the surface of the cutting bed, and the technical effects of no knife clamping and cutting surface leveling are achieved.

Preferably, the connecting seat comprises a circular cutter cover and a lateral fixing seat, the circular cutter cover is transversely provided with a shaft seat hole, the outer side of the shaft seat hole is provided with a splicing groove, and the lateral fixing seat is inserted into the splicing groove, so that the circular cutter cover and the lateral fixing seat are spliced and connected in the left-right direction; the lateral fixing seat is provided with a blade rotating groove around the head seat hole, and is vertically provided with an air duct communicated with the head seat hole; the pneumatic cutter shaft of the circular cutter cutting part is inserted into the shaft seat hole after being provided with the tubular impeller part, the front end of the pneumatic cutter shaft is provided with the cutter shaft cover for fixation, then the circular cutter blade is continuously arranged on the pneumatic cutter shaft at the position of the blade rotating groove, the head end of the pneumatic cutter shaft is provided with the cutter shaft head bearing, the cutter shaft head bearing is arranged in the head seat hole, the circular cutter cutting part is suspended in the circular cutter cover and the lateral fixing seat, and the circular cutter blade rotates in the blade rotating groove. This structure can be very convenient carry out the dismantlement and the installation of circular knife lid and side direction fixing base, and the daily convenient maintenance inspection circular knife of being convenient for cuts the piece, and whole connecting seat also goes down from a location section of thick bamboo easily, and the modularization degree is high, and tool bit structure separation is easy, is convenient for change and maintain, just also changes the new connecting seat structure of dress and just can change the tool bit, the quick maintenance of being convenient for.

Preferably, the positioning cylinder is a hollow pipe body, an inlet at the top of the positioning cylinder is further covered with a top cap, and the top cap is provided with an air pipe socket, a mounting fixing hole and an adjusting air hole. The hollow tube body of the positioning tube is used for entering compressed air, the mounting fixing hole is used for being connected with the machine head, the adjusting air hole is used for supplementing the compressed air to increase air pressure or discharging the air to reduce the air pressure, and the pressure of the injected compressed air is adjusted.

Preferably, the lateral fixing seat is transversely provided with an emptying hole, and the emptying hole is directly communicated with the external space or provided with a drainage pipe. The main purpose of the emptying hole is that after the round blade is cleaned by gas in the exhaust hole, impurities at the top can be discharged from the lateral fixing seat and the blade rotating groove through the emptying hole.

Preferably, the positioning cylinder and the connecting seat are provided with a lifting sliding groove on the same longitudinal axis. The lifting sliding groove is used for being installed on a sliding rail or a sliding rod, and the circular knife device can conveniently move up and down.

Preferably, the tubular impeller is integrally tubular, a driving shaft tube is arranged at the axis position, a plurality of impellers are arranged around the circumference of the tubular body in a sleeved or integrated mode on the outer wall surface of the tubular impeller, the pneumatic cutter shaft is square or polygonal in the middle or a flat circular structure body with semicircular structures at the front end and the rear end, the inserting shaft hole used for matching the tubular impeller is also square or polygonal, the pneumatic cutter shaft is sleeved with a pneumatic cutter shaft tail bearing at the tail end of the pneumatic cutter shaft after being inserted into the driving shaft tube, a pneumatic cutter shaft middle bearing is sleeved at the front end of the tubular impeller, and the cutter shaft cover covers the pneumatic cutter shaft middle bearing and rotates together with the pneumatic cutter shaft middle bearing. This structure has adopted duplex bearing internal rotation structure, has rotated under the impeller is blown by compressed air, and the rotational efficiency is than higher.

Preferably, the tubular impeller part is provided with an occlusion positioning plate at the head end and the tail end of the driving shaft tube, the occlusion positioning plate is occluded to fix the pneumatic cutter shaft inserted into the driving shaft tube, and a tail bearing or a middle bearing of the pneumatic cutter shaft is sleeved above the occlusion positioning plate. The structure can be stably connected with a tail bearing or a middle bearing of the pneumatic cutter shaft into a whole, and effectively prevents the idle running and the deviation of the pneumatic cutter shaft.

Preferably, the top of the connecting base is provided with an insertion fixing head in a threaded connection or buckling connection or screw fixing connection mode, and the insertion fixing head is inserted into and connected to the bottom of the positioning cylinder. The connecting seat and the inserting fixing head are of separable structures, and the top of the connecting seat is exposed out of the mounting cavity after the connecting seat and the inserting fixing head are separated, so that the circular cutter cutting piece is mounted and maintained.

Preferably, the circular knife cover of the connecting seat is provided with air ducts communicated with the mounting cavity, each air duct comprises a side air duct and a top air duct, the side air ducts are provided with two branches, outlets at the bottoms of the side air ducts are respectively arranged at the front and the rear of the tubular impeller, and the tops of the top air duct and the side air ducts are respectively connected with an air conveying pipe. The side air duct is used for introducing compressed air flow into the side surface of the tubular impeller part to push the tubular impeller part to rotate from the side surface so as to drive the whole circular cutter to cut, for example, after the compressed air of the side air duct on the front side of the tubular impeller part is introduced, the tubular impeller part is blown to rotate clockwise, then the circular cutter also rotates clockwise, and the whole device advances to cut; after compressed air in a side air passage at the rear side of the tubular impeller piece is introduced, the tubular impeller piece is blown to rotate anticlockwise, then the circular cutter piece also rotates anticlockwise, and the whole device retreats to cut; the top air channel directly guides the airflow of the compressed air from the top to the top of the tubular impeller part, and the circular cutter part keeps rotating clockwise under the condition that the impeller is arranged downwards, so that the effects of stabilizing, stopping the rotation of the circular cutter part and preventing the reverse rotation of the circular cutter part are mainly achieved.

The utility model adopts the above technical scheme after have following obvious effect: 1. the combination of the circular blade structure and the cutter head structure is adopted, the circular cutter has higher effect than a straight cutter when in cutting, can roll on the surface of the textile for quick and convenient cutting action, does not drag the textile, can adapt to more textiles and has small damage to the periphery of the cutting position of the textile; 2. the pneumatic power is adopted to drive the pneumatic cutter shaft and the circular blade of the circular cutter cutting piece to rotate, the pneumatic power is much lower than the electric power, and the adopted electric parts are fewer, so that the whole electric energy consumption is saved, the maintenance is easy, and the service life is longer than that of the electric cutter cutting piece; 3. the connecting seat and the circular cutter cutting piece are provided with an additional gas exhaust structure, the connecting seat and the circular cutter cutting piece are opposite to the corresponding circular cutter piece, the technical effect of blowing away sundries on the circular cutter piece can be achieved, downward blowing can be achieved due to the guiding effect of the cutter rotating groove, the circular cutter can cut textiles when the textiles are cut, the cut textile cutting surface cannot be drawn into the cutter rotating groove, the textile cutting surface is attached to the surface of a cutting bed, no cutter clamping is achieved, the technical effect of cutting surface flattening is achieved, 4, the modularization degree is high, the cutter head structure is easy to separate, and convenience in replacement and maintenance can be achieved.

Drawings

FIG. 1 is a schematic view of the overall internal and external structure.

Fig. 2 is a structural view of the explosive connection of the positioning cylinder and the circular cutter seat.

Fig. 3 is a schematic view of the installation of the positioning cylinder, the connecting seat and the circular cutter cutting piece.

Fig. 4 is a schematic diagram of the inner and outer structures of the circular cutter.

FIG. 5 is a view of the overall combination of the circular cutter;

FIG. 6 is an exploded perspective view in its entirety;

FIG. 7 is a perspective exploded view of a circular knife cutting member;

FIG. 8 is a left side perspective view of a circular cutter setting method;

FIG. 9 is a right perspective view of a circular cutter setting method;

FIG. 10 is a schematic view of a tool tip drive configuration;

FIG. 11 is a view showing the structure of an air duct in the connecting base;

FIG. 12 is a structural view of embodiment 2.

In the figure: the device comprises a positioning cylinder 1, a circular cutter seat 2, a connecting seat 3, a circular cutter cutting piece 4, an installation cavity 5, a circular cutter blade 6, a pneumatic cutter shaft 7, a tubular impeller piece 8, a cutter shaft cover 9, a cleaning exhaust hole 10, an outlet 11, an air duct 12, a circular cutter cover 13, a lateral fixing seat 14, a shaft seat hole 15, a splicing groove 16, a head seat hole 17, a cutter blade rotating groove 18, a cutter shaft head bearing 19, an inlet 20, a top cap 21, an air pipe socket 21a, an installation fixing hole 21b, an adjusting air hole 22, an exhaust hole 23, a pumping and discharging pipe 24, a lifting sliding groove 25, a driving shaft pipe 26, an impeller 27, a shaft inserting hole 28, a pneumatic cutter shaft tail bearing 29, a pneumatic cutter shaft middle bearing 30, a meshing positioning plate 31, an insertion fixing head 32, a lateral air duct 33, a top air duct 34 and an air duct 35.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The main embodiment, as shown in fig. 1 and 2, the self-cleaning circular knife device of the intelligent cutting bed of the present invention comprises a positioning cylinder 1 and a circular knife holder 2, wherein the positioning cylinder 1 is integrally of a tubular structure, the circular knife holder 2 is inserted into a tube body of the positioning cylinder 1 from the bottom, a screw hole is formed in a side surface of a connection position, and the circular knife holder 2 is fixedly connected and arranged by a screw; wherein: the circular knife seat 2 comprises a connecting seat 3 and a circular knife cutting piece 4, as shown in fig. 3, the connecting seat 3 comprises a circular knife cover 13 and a lateral fixing seat 14, the circular knife cover 13 is transversely provided with a shaft seat hole 15, a splicing groove 16 is formed outside the shaft seat hole 15, and the lateral fixing seat 14 is inserted into the splicing groove 16, so that the circular knife cover 13 and the lateral fixing seat 14 are spliced and connected in the left-right direction, and the connecting seat 3 with a structure capable of being spliced and split in the left-right direction is formed;

continuing to be shown in the left side of fig. 3, after the circular knife cover 13 and the lateral fixing seat 14 are assembled into a whole, a head seat hole 17 is formed in a symmetrical shaft seat hole 15 of the lateral fixing seat 14, and the shaft seat hole 15 and the head seat hole 17 form an installation cavity 5 for installing the circular knife cutting piece 4 after being assembled;

as shown in fig. 1 and 3, the circular cutter 4 is mounted in the mounting cavity 5; the circular cutter cutting part 4 comprises a circular blade 6, a pneumatic cutter shaft 7, a tubular impeller part 8 and a cutter shaft cover 9, wherein the pneumatic cutter shaft 7 is provided with the tubular impeller part 8, as shown in fig. 4-7, the tubular impeller part 8 is integrally of a tubular structure, a driving shaft tube 26 is arranged at the axis position, a plurality of impellers 27 are arranged on the surface of the outer wall of the tubular impeller part 8 in a sleeved or integrated mode and surround the circumference of the tubular part, as shown in fig. 6 and 7, the impellers 27 are of a plurality of tooth-shaped structures with trapezoidal sections, two groove bodies are cut out from the tooth-shaped structures, the groove bodies can block air flow when being blown by compressed air with high flow speed, so that the whole tubular impeller part is driven to rotate by the compressed air, the pneumatic cutter shaft 7 is of a square or rectangular or polygonal middle, or flat circular structure with semicircular structures at the front and rear ends, an inserting shaft hole 28 matched with the tubular impeller part 8 is also of a square or polygonal, after the pneumatic cutter shaft 7 is inserted into the driving shaft tube 26, a tail end of the pneumatic cutter shaft bearing 29 is sleeved on the tail end of the tubular cutter shaft 8, a middle cutter shaft bearing 30 is arranged at the front end of the pneumatic cutter shaft, and the pneumatic cutter shaft cover 9 and a rotary bearing 30 and a rotary shaft cover 30 and a rotary bearing 30 are arranged on one of the pneumatic cutter shaft cover. The structure adopts a double-bearing rotating structure, and the impeller rotates under the blowing of compressed air, so that the rotating efficiency is higher; the structure shows that the pneumatic cutter shaft and the circular blade of the circular cutter cutting piece are driven to rotate by adopting pneumatic power, the pneumatic power is very lower than the electric power, and the adopted electric parts are fewer, so that the whole electric energy consumption is saved, the maintenance is easier, and the service life is longer than that of the electric cutter cutting piece;

as shown in fig. 5 and 7, the pneumatic cutter shaft 7 is provided with a cutter shaft cover 9 at the front end of the tubular impeller 8, the cutter shaft cover 9 is provided with a cleaning exhaust hole 10, the circular blade 6 is arranged at the front end of the cutter shaft cover 9 of the pneumatic cutter shaft 7, and an outlet 11 of the cleaning exhaust hole 10 is opposite to the circular blade 6;

as shown in fig. 9, the lateral fixing base 14 is provided with a blade rotating groove 18 around the head base hole 17, and the lateral fixing base 14 is further vertically provided with an air duct 12, and the air duct 12 is communicated with the head base hole 17; the pneumatic knife shaft 7 of the circular knife cutting part 4 is installed with the tubular impeller part 8 and then inserted into the shaft seat hole 15, the front end of the pneumatic knife shaft is installed with the knife shaft cover 9 for fixation, then the circular knife blade 6 is continuously installed on the pneumatic knife shaft 7 at the position of the blade rotating groove 18, the head end of the pneumatic knife shaft 7 is provided with the knife shaft head bearing 19, the knife shaft head bearing 19 is installed into the head seat hole 17, therefore, the circular knife cutting part 4 is suspended in the circular knife cover 13 and the lateral fixing seat 14, and the circular knife blade 6 rotates in the blade rotating groove 18. This structure can be very convenient carry out the dismantlement and the installation of circle knife lid 13 and side direction fixing base 14, and the daily convenient maintenance of being convenient for examines circle knife cutting member 4, and whole connecting seat also gets off from a location section of thick bamboo 1 easily, and the modularization degree is high, and tool bit structure separation is easy, is convenient for change and maintain, just also changes the new connecting seat structure of dress and just can change the tool bit, the quick maintenance of being convenient for.

As mentioned above, the principle of use is: the circular knife cover 13 of the connecting seat 3 is provided with an air channel 12 communicated with the mounting cavity 5, compressed air introduced by the air channel 12 pushes the tubular impeller part 8 to drive the pneumatic knife shaft 7 to rotate and is linked with the circular knife blade 6 of the pneumatic knife shaft 7 to rotate, the compressed air is discharged from an outlet 11 of the cleaning exhaust hole 10 to blow onto the circular knife blade 6 to clean the circular knife blade 6 and flows downwards under the limitation of the space of the mounting cavity 5. Can reach and blow away the debris technical effect on the circular knife piece, can also blow downwards because the guide effect in blade rotating groove for the circular knife can not be drawn into the blade rotating groove at the cutting of fabrics, cuts the fabrics cutting plane of opening, but makes it paste on cutting bed surface, reaches not card sword, and the smooth technical effect of cutting plane.

Embodiment 2, as shown in fig. 12, a self-cleaning circular knife device of an intelligent cutting bed includes a positioning cylinder 1 and a circular knife holder 2, the positioning cylinder 1 is integrally of a tubular structure, the circular knife holder 2 is inserted into a tube body of the positioning cylinder 1 from the bottom, a screw hole is formed in a side surface of a connection position, and the circular knife holder 2 is fixedly connected and arranged by a screw; wherein: the circular knife seat 2 comprises a connecting seat 3, a circular knife cutting piece 4 and an inserting fixing head 32, the top of the connecting seat 3 is in threaded connection with the inserting fixing head 32, the inserting fixing head 32 is inserted into the bottom of the positioning cylinder 1, the connecting seat 3 is provided with an installation cavity 5, the whole circular knife cutting piece 4 is directly installed in the installation cavity 5, the inserting fixing head 32 is arranged on a sealing cover, the connecting seat and the inserting fixing head can be combined and separated from each other vertically, the installation cavity is exposed at the top of the connecting seat after the connecting seat and the inserting fixing head are separated from each other, and the circular knife cutting piece is installed and maintained.

Preferably, as shown in fig. 6, the positioning cylinder 1 is a hollow tube, an inlet 20 at the top of the positioning cylinder 1 is further covered with a top cap 21, and the top cap 21 is provided with an air pipe socket 21a, an installation fixing hole 21b and an adjustment air hole 22. The hollow tube body of the positioning tube is used for entering compressed air, the mounting fixing hole is used for being connected with the machine head, the adjusting air hole is used for supplementing the compressed air to increase air pressure or discharging the air to reduce the air pressure, and the pressure of the injected compressed air is adjusted.

As shown in fig. 8 and 10, preferably, the lateral fixing base 14 is transversely provided with an evacuation hole 23, and the evacuation hole 23 is directly communicated with the external space or provided with a drainage pipe 24. The main purpose of the emptying hole is to clean the circular blade by cleaning gas in the exhaust hole, and impurities at the top can be discharged out of the lateral fixing seat and the blade rotating groove through the emptying hole.

As shown in fig. 6, it is preferable that the positioning cylinder 1 and the connecting holder 3 have a lifting/lowering sliding groove 25 on the same longitudinal axis. The lifting sliding groove is used for being installed on the sliding rail or the sliding rod, and the circular knife device can conveniently move up and down.

As shown in fig. 4 and 7, preferably, the tubular impeller 8 is provided with an engagement positioning plate 31 at the head end and the tail end of the driving shaft tube 26, the engagement positioning plate 31 engages and fixes the air knife shaft 7 inserted into the driving shaft tube 26, and the air knife shaft tail bearing 29 or the air knife shaft middle bearing 30 is fitted over the engagement positioning plate 31. The structure can be stably connected with the sleeved pneumatic cutter shaft tail bearing 29 or the pneumatic cutter shaft middle bearing 30 into a whole, and effectively prevents the idle running and the deviation of the pneumatic cutter shaft.

The above description is only a preferred and feasible embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and various other modifications made by the technical solutions and concepts of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a self-cleaning circular knife device of intelligence cutting bed, includes a location section of thick bamboo (1), circular knife seat (2), and a location section of thick bamboo (1) bottom sets up circular knife seat (2), characterized by: the circular knife seat (2) comprises a connecting seat (3) and a circular knife cutting piece (4), the connecting seat (3) is provided with a mounting cavity (5), and the circular knife cutting piece (4) is mounted in the mounting cavity (5); the circular cutter cutting part (4) comprises a circular blade (6), a pneumatic cutter shaft (7), a tubular impeller part (8) and a cutter shaft cover (9), wherein the pneumatic cutter shaft (7) is provided with the tubular impeller part (8), the pneumatic cutter shaft (7) is provided with the cutter shaft cover (9) at the front end of the tubular impeller part (8), the cutter shaft cover (9) is provided with a cleaning exhaust hole (10), the circular blade (6) is arranged at the front end of the cutter shaft cover (9) of the pneumatic cutter shaft (7), and an outlet (11) of the cleaning exhaust hole (10) is opposite to the circular blade (6); the connecting seat (3) is provided with an air duct (12) which is communicated with the mounting cavity (5), compressed air introduced by the air duct (12) pushes the tubular impeller part (8) to drive the pneumatic cutter shaft (7) to rotate and is linked with the circular blade (6) of the pneumatic cutter shaft (7) to rotate, the compressed air is discharged from an outlet (11) of the cleaning exhaust hole (10) to blow to the circular blade (6), the circular blade (6) is cleaned, and the compressed air flows downwards under the limitation of the space of the mounting cavity (5).

2. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1, wherein: the connecting seat (3) comprises a circular cutter cover (13) and a lateral fixing seat (14), a shaft seat hole (15) is transversely formed in the circular cutter cover (13), a splicing groove (16) is formed in the outer side of the shaft seat hole (15), and the lateral fixing seat (14) is inserted into the splicing groove (16), so that the circular cutter cover (13) and the lateral fixing seat (14) are spliced left and right; a symmetrical shaft seat hole (15) of the lateral fixing seat (14) is provided with a head seat hole (17), the shaft seat hole (15) and the head seat hole (17) are spliced to form a mounting cavity (5), the lateral fixing seat (14) is provided with a blade rotating groove (18) around the head seat hole (17), in addition, the lateral fixing seat (14) is vertically provided with an air duct (12), and the air duct (12) is communicated with the head seat hole (17); a pneumatic cutter shaft (7) of a circular cutter cutting piece (4) is provided with a tubular impeller piece (8) and then inserted into a shaft seat hole (15), the front end of the pneumatic cutter shaft is provided with a cutter shaft cover (9) for fixation, then, a circular cutter blade (6) is continuously arranged on the pneumatic cutter shaft (7) at the position of a blade rotating groove (18), the head end of the pneumatic cutter shaft (7) is provided with a cutter shaft head bearing (19), the cutter shaft head bearing (19) is arranged in a head seat hole (17), therefore, the circular cutter cutting piece (4) is suspended in a circular cutter cover (13) and a lateral fixed seat (14), and the circular cutter blade (6) rotates in the blade rotating groove (18).

3. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1, wherein: the positioning cylinder (1) is a hollow pipe body, an inlet (20) at the top of the positioning cylinder (1) is further covered with a top cap (21), and the top cap (21) is provided with an air pipe socket (21 a), a mounting and fixing hole (21 b) and an adjusting air hole (22).

4. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 2, characterized in that: the lateral fixing seat (14) is transversely provided with an emptying hole (23), and the emptying hole (23) is directly communicated with the external space or provided with a drainage pipe (24).

5. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1 or 3, wherein: the positioning cylinder (1) and the connecting seat (3) are provided with a lifting sliding groove (25) on the same longitudinal axis.

6. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1, wherein: the integral tubular impeller piece (8) is of a tubular structure, a driving shaft tube (26) is arranged at the axis position, a plurality of impellers (27) are arranged around the circumference of the tubular body in a sleeved or integrated mode on the surface of the outer wall of the tubular impeller piece (8), a pneumatic cutter shaft (7) is square or polygonal in the middle or is of a oblate structure body with semicircular structures at the front end and the rear end, a shaft inserting hole (28) used for matching the tubular impeller piece (8) is also square or polygonal, after the pneumatic cutter shaft (7) is inserted into the driving shaft tube (26), a pneumatic cutter shaft tail bearing (29) is sleeved at the tail end of the pneumatic cutter shaft, a pneumatic cutter shaft middle bearing (30) is sleeved at the front end of the tubular impeller piece (8), and a shaft cover (9) covers the pneumatic cutter shaft middle bearing (30) and rotates together with the pneumatic cutter shaft middle bearing (30).

7. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1 or 6, characterized in that: the tubular impeller part (8) is provided with meshing positioning plates (31) at the head end and the tail end of the driving shaft tube (26), the meshing positioning plates (31) are meshed with and fixedly inserted into the pneumatic cutter shaft (7) of the driving shaft tube (26), and a pneumatic cutter shaft tail bearing (29) or a pneumatic cutter shaft middle bearing (30) is sleeved above the meshing positioning plates (31).

8. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1 or 2, characterized in that: the top of the connecting seat (3) is provided with an inserting fixing head (32) in threaded connection or buckling connection or screw fixed connection, and the inserting fixing head (32) is inserted into and connected to the bottom of the positioning cylinder (1).

9. The self-cleaning circular knife device of the intelligent cutting bed as claimed in claim 1 or 2, wherein: circular knife lid (13) of connecting seat (3) are provided with air duct (12) and installation cavity (5) and communicate with each other, and air duct (12) are including side air duct (33) and top air duct (34), and side air duct (33) sets up two, and the export of its bottom sets up respectively on the front and back position of cast impeller spare, and a gas-supply pipe (35) is connected respectively at the top of top air duct (34) and side air duct (33).

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