CN212885103U

CN212885103U - Front-mounted pneumatic chuck

Info

Publication number: CN212885103U
Application number: CN202020842758.0U
Authority: CN
Inventors: 石利军
Original assignee: Changzhou Dairuike Mechanical And Electrical Technology Co ltd
Current assignee: Changzhou Dairuike Mechanical And Electrical Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-04-06
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a front-mounted pneumatic chuck, which comprises a base, a bearing fixed on the base, a chuck body, an inner sleeve, a distribution ring component and a driven gear, wherein the chuck body, the inner sleeve, the distribution ring component and the driven gear are fixedly connected in sequence; the inner sleeve is fixed in the inner ring of the bearing; the chuck body is made of aluminum; the front end of the chuck body is provided with a jaw assembly; the chuck also comprises a driving mechanism which is arranged between the chuck body and the gas distribution ring assembly and is arranged on the gas distribution ring assembly, and the driving mechanism comprises a gear assembly and a pneumatic assembly; the pneumatic assembly is communicated with an external air source through the air distribution ring assembly and is suitable for driving the jaw assembly to move. The utility model discloses structural design is compact for the whole axial dimensions of chuck reduces, has effectively shortened air chuck's cutting tails.

Description

Front-mounted pneumatic chuck

Technical Field

The utility model relates to a laser cutting machine part, especially a forward type air chuck.

Background

Laser cutting is the most important application technology in the laser processing industry, and has the characteristics of high speed, high precision, no deformation of workpieces and the like, so that the laser cutting technology is widely applied to the fields of automobiles, rolling stock manufacturing, aviation, chemical engineering, light industry, electrical appliances, electronics, petroleum, metallurgy and the like. In recent years, laser cutting technology has developed rapidly, and the laser cutting technology has increased at a rate of 20% to 30% every year internationally. China has increased more than 25% per year since 1985. Because the laser industry foundation in China is poor, the application of the laser processing technology is not common, the overall level of laser processing is still far from the advanced state, and the obstacles and the defects are believed to be solved along with the continuous progress of the laser processing technology. The laser cutting technology is bound to become an important pipe processing means indispensable in the 21 st century. The wide application market of laser cutting processing and the rapid development of modern science and technology enable domestic and foreign science and technology workers to conduct continuous research on laser cutting processing technology, and the laser cutting technology is promoted to develop continuously forward.

Along with the increasing expansion of the market of laser pipe cutting machines, the use of pneumatic chucks is more and more, but the problem of long cutting tailings commonly exists in the pneumatic chucks used by laser complete machine factories at present, and a chuck with excellent performance is urgently needed to replace a simple and crude chuck which cannot fully meet the cutting target at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a leading type air chuck effectively shortens air chuck's cutting tails.

Realize the utility model discloses the technical scheme of purpose is:

a front-mounted pneumatic chuck comprises a base, a bearing fixed on the base, and a chuck body, an inner sleeve, a gas distribution ring assembly and a driven gear which are fixedly connected in sequence; the inner sleeve is fixed in the inner ring of the bearing; the chuck body is made of aluminum; the front end of the chuck body is provided with a jaw assembly; the chuck also comprises a driving mechanism which is arranged between the chuck body and the gas distribution ring assembly and is arranged on the gas distribution ring assembly, and the driving mechanism comprises a gear assembly and a pneumatic assembly; the pneumatic assembly is communicated with an external air source through the air distribution ring assembly and is suitable for driving the jaw assembly to move.

Furthermore, four sliding parts are uniformly distributed at the front end of the chuck body; the jaw assembly comprises two pairs of sliding blocks and a jaw mechanism; the sliding block is slidably mounted on the sliding part, and the claw mechanism is detachably mounted on the sliding block.

Further, be equipped with the mold insert of stainless steel between sliding block and the sliding part, because the chuck body is made by the aluminum product, compare in the chuck body of steel material, weight alleviates greatly, but surface hardness is lower simultaneously, adopts the mold insert of stainless steel material, can effectively avoid the sliding block at gliding in-process wearing and tearing chuck body.

Furthermore, two positioning key grooves are formed in the front end face of the sliding block; the rear part of the sliding block is symmetrically provided with outward extending bosses, and the outer side of the boss on one side is provided with tooth grooves distributed in the direction of extension degree; the sliding block is provided with scraping plates at two ends along the moving direction.

Furthermore, the both sides of sliding block are equipped with the layering that fixed connection is the L type on the chuck body in the cross section to restriction sliding block can only follow chuck radial movement.

Furthermore, one side of the pressing strip, which is close to the sliding block, is provided with a groove, and a felt strip is arranged in the groove, so that the sliding friction tightness is improved, and the dustproof effect is achieved.

Furthermore, the gear assembly comprises a first fluted disc, a second fluted disc, a pair of first gap bridge gear assemblies and a pair of second gap bridge gear assemblies, wherein the first fluted disc and the second fluted disc are sequentially sleeved on the inner sleeve; the gear assembly further comprises a plurality of supporting pieces fixedly mounted at the rear end of the chuck body, and the first gap bridge gear assembly and the second gap bridge gear assembly are respectively rotatably mounted on the supporting pieces; the tooth grooves of the first fluted disc and the pair of sliding blocks are respectively meshed with the first bridge gear assembly; and the tooth grooves of the second fluted disc and the other pair of sliding blocks are respectively meshed with the second gap bridge gear assembly.

Furthermore, roller pins are arranged between the first fluted disc and the inner sleeve and between the second fluted disc and the inner sleeve, so that the friction force between the fluted discs and the inner sleeve is greatly reduced.

Furthermore, oil ways are arranged at the front part of the inner sleeve corresponding to the first fluted disc and the second fluted disc.

Furthermore, the chuck body is provided with the oil hole communicated with the oil way, lubricating oil can be directly added to the roller pins at the fluted disc from the outside of the chuck, and the maintenance is convenient.

Further, the first bridge gear assembly comprises a first rotating shaft, and a first gear and a second gear which are coaxially and fixedly installed on the first rotating shaft, and the first gear and the second gear are respectively meshed with the tooth grooves of the first fluted disc and the sliding block; the second bridge gear assembly comprises a second rotating shaft, and a third gear and a fourth gear which are coaxially and fixedly installed on the second rotating shaft, wherein the third gear and the fourth gear are respectively meshed with tooth grooves of a second fluted disc and a sliding block.

Further, the pneumatic assembly comprises a first cylinder assembly and a second cylinder assembly; the first cylinder assembly comprises a first cylinder, a first mounting pin, a first connecting block, a first guide pin and a first side lug; the first cylinder is rotatably connected to the first mounting pin; two ends of the first mounting pin are respectively mounted on the front end surface of the gas distribution ring assembly and the rear end surface of the chuck body; the first guide pin is rotationally connected with the first cylinder through a first connecting block; one end of the first side lug is fixedly connected with the first fluted disc, and the other end of the first side lug is fixedly connected with the first guide pin; the second air cylinder assembly comprises a second air cylinder, a second mounting pin, a second connecting block, a second guide pin and a second side lug; the second cylinder is rotatably connected to the second mounting pin; two ends of the second mounting pin are respectively mounted on the front end surface of the gas distribution ring assembly and the rear end surface of the chuck body; the second guide pin is rotatably connected with the second air cylinder through a second connecting block; one end of the second side lug is fixedly connected with the second gear plate, and the other end of the second side lug is fixedly connected with the second guide pin.

Further, the gas distribution ring assembly comprises a gas sealing disc, a sealing support ring and a sealing gland; two ends of the air sealing disc are fixedly connected with the rear end of the inner sleeve and the front end of the driven gear respectively; the gas sealing disc is provided with a flange part; the sealing support ring is rotatably sleeved on the air sealing disc; the sealing gland is fixedly sleeved on the gas sealing disc; the flange part and the sealing gland are respectively arranged on two sides of the sealing support ring; and the outer peripheral surface of the sealing support ring is provided with an air inlet and an air outlet which are communicated with an external air source.

Furthermore, air passage grooves are formed in two sides of the sealing support ring, sealing rings which are in clearance fit along the axial direction are arranged in the air passage grooves, and a plurality of air holes are uniformly distributed in the sealing rings; the air sealing disc is provided with a first air passage communicated with the air passage groove on one side through the air hole; the sealing gland is provided with a second air passage communicated with the air passage groove at the other side through the air hole; and a third air passage communicated with the second air passage is also arranged on the air sealing disc.

Furthermore, the two sides of the sealing support ring are also provided with annular grooves, balls are arranged in the annular grooves, and rolling needles are arranged between the inner hole of the sealing support ring and the air sealing disc, so that the friction force is small when the sealing support ring and the sealing gland and the air sealing disc rotate mutually, and the rotation is smoother.

Furthermore, an oil cup suitable for automatically supplementing oil to the needle roller of the inner hole is arranged on the peripheral surface of the sealing support ring, so that the use is convenient.

Furthermore, a plurality of through holes are uniformly distributed on the driven gear along the circumferential direction.

Furthermore, a groove matched with the bearing is arranged on the base.

Further, the outer ring of the bearing is fixedly installed in the groove of the base, and the front end face and the rear end face of the inner ring of the bearing are fixedly connected with the chuck body and the air sealing disc respectively.

Furthermore, one side of the base is provided with a filtering device.

Furthermore, a positioning groove penetrating through the front and the rear is formed in the middle of the bottom of the base, and the laser cutting machine is convenient to mount.

Furthermore, the rear end face of the base is symmetrically provided with limiting plates, and the limiting plates are fixedly connected with the sealing support ring through bolts to prevent the sealing support ring from rotating along with the machine tool spindle.

Furthermore, a proximity switch is fixedly arranged on the rear end face of the base, and a bolt matched with the proximity switch is arranged on the outer peripheral face of the sealing gland, so that the rotation angle of the chuck can be sensed, and the processing requirement of needing a special rotation angle can be met conveniently.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

1. the chuck of the utility model is sequentially and fixedly provided with a chuck body, an inner sleeve, an air distribution ring component and a driven gear along the axial direction, and the rear end of the chuck body is provided with a bearing coaxially sleeved on the inner sleeve; the chuck is still including locating the actuating mechanism in the annular cavity that chuck body, endotheca, distribution ring subassembly and bearing formed, the utility model discloses structural design is compact for the whole axial dimension of chuck reduces, has effectively shortened pneumatic chuck's cutting tails.

2. The utility model discloses the chuck body is made by the aluminum product, reduces greatly for general steel chuck weight, has reduced the inertia of the chuck body, and cast aluminium processing cycle is short simultaneously, and production efficiency is fast, and through accurate aluminum casting, also can reduce the machining allowance, improves the output of the chuck body.

3. The utility model discloses jack catch mechanism detachable installs at the sliding block, can realize jack catch mechanism's position control, satisfies the user demand of more processing strokes.

4. The utility model discloses the preceding terminal surface of sliding block is equipped with two location keyways, the location installation of the jack catch mechanism of being convenient for.

5. The utility model discloses the sliding block is equipped with the scraping plate respectively along moving direction's both ends, can in time clear away the piece of leaving over on the sliding part in the tubular product course of working in the time that the sliding block removed, guarantees that the sliding block removes in the same direction as smooth.

6. The utility model discloses drive assembly includes pneumatic assembly and pneumatic assembly driven gear assembly, drives the motion of jack catch subassembly through gear drive, and the transmission is stable, and control is accurate, realizes that two liang of linkages of four jack catch mechanisms are from feeling relieved, the mutual interference action again.

7. The utility model adopts the air inlet structure of the air distribution ring, and the chuck can not rotate when clamping the parts; after the parts are clamped, one-way pressure maintaining of the air path is realized through a check valve in an external air path, the pressure maintaining time can be more than 12 hours, and the influence of sudden air cut-off during product processing can be avoided.

8. The utility model discloses there are a plurality of through-holes along circumference evenly distributed on the driven gear, further alleviateed the holistic weight of chuck to reduce the inertia of chuck body, improved the precision of chuck processing part.

9. The utility model discloses the base is equipped with the recess with bearing matched with, the location installation of the bearing of being convenient for.

10. The utility model discloses be equipped with filter equipment, effectively filter the gaseous impurity in the pipeline, improve pneumatic component's life.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural diagram of the driving assembly of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the present invention.

Fig. 5 is a partially enlarged view at a.

Fig. 6 is a partially enlarged view at B.

Fig. 7 is a schematic view of the structure of the inner sleeve of the present invention.

The reference numbers in the drawings are:

the chuck comprises a chuck body 1, a sliding part 11, an insert 12 and an oil hole 13;

an inner sleeve 2 and an oil path 21;

the gas distribution ring assembly 3, the gas sealing disc 31, the flange part 311, the first gas passage 312, the third gas passage 313, the sealing support ring 32, the gas inlet 321, the gas outlet 322, the gas passage groove 323, the sealing ring 324, the sealing gland 33 and the second gas passage 331;

the clamping jaw assembly 4, a sliding block 41, a positioning key slot 411, a boss 412, a tooth groove 413, a clamping jaw mechanism 42, a scraping plate 43, a pressing strip 44 and a felt strip 45;

a bearing 5;

a base 6, a filter 61;

the gear assembly 7, the first fluted disc 71, the second fluted disc 72, the first bridge gear assembly 73, the first rotating shaft 731, the first gear 732, the second gear 733, the second bridge gear assembly 74, the second rotating shaft 741, the third gear 742, the fourth gear 743 and the support 75;

the pneumatic assembly 8, the first cylinder assembly 81, the first cylinder 811, the first mounting pin 812, the first connecting block 813, the first guide pin 814, the first side lug 815, the second cylinder assembly 82, the second cylinder 821, the second mounting pin 822, the second connecting block 823, the second guide pin 824, and the second side lug 825;

a driven gear 9.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

(example 1)

Referring to fig. 1 to 7, the front-mounted air chuck of the present embodiment includes a base 6, a bearing 5 fixed on the base, and a chuck body 1, an inner sleeve 2, a gas distribution ring assembly 3 and a driven gear 9 fixedly connected in sequence; chuck body 1 adopts cast aluminium spare, reduces greatly for general steel chuck weight, has reduced the inertia of chuck body, and cast aluminium processing cycle is short simultaneously, and production efficiency is fast, and through accurate aluminum casting, also can reduce the machining allowance, improves the output of chuck body. The front end of the chuck body 1 is provided with a jaw component 4; the chuck further comprises a driving mechanism arranged in an annular cavity formed by the chuck body 1, the inner sleeve 2, the gas distribution ring assembly 3 and the bearing 5, wherein the driving mechanism is suitable for driving the jaw assembly 4 to move and comprises a gear assembly 7 and a pneumatic assembly 8 for driving the gear assembly 7 to rotate. This embodiment structural design is compact for the whole axial dimensions of chuck reduces, has effectively shortened air chuck's cutting tails.

Four sliding parts 11 are uniformly distributed at the front end of the chuck body 1; the jaw assembly 4 comprises two pairs of sliding blocks 41 and jaw mechanisms 42; sliding block 41 slidable mounting is in sliding part 11, and the preceding terminal surface of sliding block 41 is equipped with two location keyway 411, and jaw mechanism 42 installs on sliding block 41 through two location keyway 411 removability, can realize jaw mechanism 42's position control, satisfies the user demand of more processing strokes. The rear part of the sliding block 41 is symmetrically provided with outward extending bosses 412, and the outer side of one side boss 412 is provided with tooth grooves 413 distributed in the extension direction; the sliding block 41 is provided with the scraping plates 43 at two ends along the moving direction respectively, so that the sliding block 41 can be moved while the scraps left on the sliding part 11 in the pipe machining process can be removed in time, and the sliding block 41 is ensured to move smoothly. Be equipped with stainless steel's mold insert 12 between sliding block 41 and the sliding part 11, because chuck body 1 adopts cast aluminium spare, compare in steel material's chuck body, weight alleviates greatly, but surface hardness is lower simultaneously, adopts stainless steel's mold insert 12, can effectively avoid sliding block 41 at gliding in-process wearing and tearing chuck body 1. The sliding block 41 is provided with a bead 44 with an L-shaped cross section fixedly connected to the chuck body 1 at both sides thereof, so that the sliding block 41 is restricted from moving only in the radial direction of the chuck body 1. One side of the pressing strip 44 close to the sliding block 41 is provided with a groove, and a felt strip 45 is arranged in the groove, so that the sliding friction tightness is improved, and the dustproof effect is achieved.

In the embodiment, a gas inlet structure of the gas distribution ring is adopted, so that the chuck cannot rotate when a part is clamped; through the check valve in the outside gas circuit behind the clamping part, realize the one-way pressurize of gas circuit, the dwell time can reach more than 12 hours, can make the product add man-hour not influenced by disconnected gas suddenly, and concrete structure is as follows: the gas distribution ring assembly 3 is respectively communicated with an external gas source and the pneumatic assembly 8, wherein the gas distribution ring assembly 3 comprises a gas sealing disc 31, a sealing support ring 32 and a sealing gland 33; the gas seal disk 31 is provided with a flange portion 311; the sealing support ring 32 and the sealing gland 33 are sequentially sleeved on the air sealing disc 31; the flange portion 311 and the seal gland 33 are respectively provided on both sides of the seal support ring 32; the gas sealing disc 31 is fixedly arranged at the rear end of the inner sleeve 2, and the sealing gland 33 is fixedly connected to the gas sealing disc 31; the outer peripheral surface of the sealing support ring 32 is provided with an air inlet 321 and an air outlet 322 which are communicated with an external air source. The both sides of sealing support ring 32 are equipped with gas circuit groove 323, are equipped with along axial clearance fit's sealing washer 324 in the gas circuit groove 323, if when left side gas circuit groove 323 admits air, sealing washer 324 moves left along gas circuit groove 323 under the atmospheric pressure effect to closely laminate with the flange portion 311 of the left gas seal dish 31 of sealing support ring 32, realize sealed function, thereby guarantee the leakproofness of gas circuit switching-over. A plurality of air holes are uniformly distributed on the sealing ring 324; the gas sealing disc 31 is provided with a first gas channel 312 communicated with the gas channel 323 at one side through the gas hole; the sealing gland 33 is provided with a second air passage 331 communicated with the air passage groove 323 at the other side through the air hole; the air sealing disk 31 is also provided with a third air passage 313 communicated with the second air passage 331.

The base 6 is provided with a groove matched with the bearing 5, so that the bearing 5 can be conveniently positioned and installed. One side of base 6 is equipped with filter equipment 61, effectively filters the gaseous impurity in the pipeline, improves pneumatic component 8's life. The middle position of the bottom of the base 6 is provided with a positioning groove which penetrates through the front and the back, and the laser cutting machine is convenient to install. Limiting plates are symmetrically arranged on the rear end face of the base 6 and are fixedly connected with the sealing support ring through bolts, so that the sealing support ring is prevented from rotating along with the machine tool spindle. Fixed proximity switch that is equipped with on the rear end face of base 6, be equipped with on the periphery of gland 33 with proximity switch matched with bolt, can respond to chuck rotation angle, be convenient for satisfy the processing demand that needs special rotation angle.

This embodiment drives the jack catch subassembly through gear drive and moves, and the transmission is stable, and control is accurate, realizes that two liang of linkages of four jack catch mechanisms 42 are from feeling relieved, the mutual interference action again, and concrete structure is as follows: the gear assembly 7 comprises a first fluted disc 71 and a second fluted disc 72, a pair of first gap bridge gear assemblies 73 and a pair of second gap bridge gear assemblies 74 which are sequentially sleeved on the inner sleeve 2; the gear assembly further includes a plurality of supports 75 fixedly installed at the rear end of the chuck body 1, and the first and second bridge gear assemblies 73 and 74 are rotatably installed at the supports 75, respectively. The first bridge gear assembly 73 includes a first rotating shaft 731, and a first gear 732 and a second gear 733 coaxially and fixedly mounted on the first rotating shaft 731, wherein the first gear 732 and the second gear 733 are respectively engaged with the first toothed disc 71 and a toothed groove 413 of one sliding block 41; the second bridge gear assembly 74 includes a second rotation shaft 741, and a third gear 742 and a fourth gear 743 coaxially and fixedly mounted on the second rotation shaft 741, and the third gear 742 and the fourth gear 743 are respectively engaged with the second gear 72 and the tooth groove 413 of the other slide block 41. Roller pins are arranged between the first gear disc 71 and the second gear disc 72 and the inner sleeve 2, so that the friction force between the gear discs and the inner sleeve 2 is greatly reduced. The front part of the inner sleeve 2 is provided with an oil path 21 corresponding to the first fluted disc 71 and the second fluted disc 72. The chuck body 1 is provided with the oil hole 13 communicated with the oil path 21, lubricating oil can be directly added to the roller pins at the fluted disc from the outside of the chuck, and the maintenance is convenient.

The pneumatic assembly 8 comprises a first cylinder assembly 81 and a second cylinder assembly 82; the first cylinder assembly 81 comprises a first cylinder 811, a first mounting pin 812, a first connecting block 813, a first guide pin 814 and a first side lug 815; the first cylinder 811 is pivotally connected to the first mounting pin 812; two ends of the first mounting pin 812 are respectively mounted on the front end surface of the gas distribution ring component 3 and the rear end surface of the chuck body 1; the first guide pin 814 is rotatably connected with the first cylinder 811 by a first connecting block 813; one end of the first side lug 815 is fixedly connected with the first fluted disc 71, and the other end is fixedly connected with the first guide pin 814; the second cylinder assembly 82 includes a second cylinder 821, a second mounting pin 822, a second connecting block 823, a second guide pin 824, and a second side lug 825; the second cylinder 821 is rotatably connected to the second mounting pin 822; two ends of the second mounting pin 822 are respectively mounted on the front end surface of the gas distribution ring component 3 and the rear end surface of the chuck body 1; the second guide pin 824 is rotatably connected with the second cylinder 821 through a second connecting block 823; the second side ear 825 has one end fixedly connected to the second gear plate 72 and the other end fixedly connected to the second guide pin 824.

The driven gear 9 is fixedly arranged at the rear end of the air sealing disc 31; 12 through holes are uniformly distributed on the driven gear 9 along the circumferential direction, so that the overall weight of the chuck is further reduced, the inertia of the chuck body is reduced, and the precision of processing parts by the chuck is improved.

The utility model discloses a theory of operation: when air is fed, an air inlet pipe of an external air source enters the left air path groove 321 through the filtering device 61 and the air inlet 321 of the sealing support ring 32, and is communicated with the two cylinders through air pipes along the first air passage 312, so that power is provided for the movement of the cylinders; during air exhaust, the air cylinder is communicated with the third air passage 313 through an air pipe, enters the right air passage groove 321 of the sealing support ring 32 through the third air passage 313 and the second air passage 331 of the sealing gland 33, is communicated with the filtering device 61 through the air outlet 322, and is further connected with an external air source. It should be noted that the air inlet 321 and the air outlet 322 are opposite, air can enter from the air inlet 321 or from the air outlet 322, so as to realize the reciprocating motion of the cylinder, and the direction change of the air flow is controlled by the solenoid valve of the external air passage.

The chuck is mounted on a laser cutting machine, and a speed reducer on the laser cutting machine drives the driven gear 9 to rotate, so that the air sealing disc 31, the inner ring of the bearing 5, the inner sleeve 2 and the chuck body 1 are driven to rotate. When the part is clamped, the chuck does not rotate. The first cylinder 811 drives the first guide pin 814 to move so as to drive the first fluted disc 71 connected with the first side lug 815 to rotate, the first fluted disc 71 drives the first gears 732 of the pair of first bridge gear assemblies 73 to rotate, and then drives the second gear 733, which is coaxially and fixedly installed on the first rotating shaft 731 with the first gears 732, to rotate, and further drives the sliding block 41 to slide along the sliding part 11 of the chuck body 1, so as to realize the movement of the pair of jaw mechanisms; similarly, the second cylinder 821 drives the second guide pin 824 to move so as to drive the second fluted disc 72 to rotate, and the second bridge gear assembly 74 drives the sliding block 41 of the other pair of jaw assemblies 4 to move, so that the movement of the other pair of jaw mechanisms 42 is realized, and the clamping of the part is realized.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A front-mounted air chuck is characterized in that: comprises a base (6), a bearing (5) fixed on the base (6), and a chuck body (1), an inner sleeve (2), a gas distribution ring component (3) and a driven gear (9) which are fixedly connected in sequence; the inner sleeve (2) is fixed in an inner ring of the bearing (5); the chuck body (1) is made of aluminum; the front end of the chuck body (1) is provided with a jaw component (4); the chuck further comprises a driving mechanism which is arranged between the chuck body (1) and the gas distribution ring assembly (3) and is arranged on the gas distribution ring assembly (3), and the driving mechanism comprises a gear assembly (7) and a pneumatic assembly (8); the pneumatic assembly (8) is communicated with an external air source through the air distribution ring assembly (3) and is suitable for driving the jaw assembly (4) to move.

2. The forward air chuck as set forth in claim 1, wherein: four sliding parts (11) are uniformly distributed at the front end of the chuck body (1); the jaw assembly (4) comprises two pairs of sliding blocks (41) and jaw mechanisms (42); the sliding block (41) is slidably mounted on the sliding part (11), and the claw mechanisms (42) are detachably mounted on the sliding block (41).

3. The forward air chuck as set forth in claim 2, wherein: the front end face of the sliding block (41) is provided with two positioning key slots (411); the rear part of the sliding block (41) is symmetrically provided with outwards extending bosses (412), and the outer sides of the bosses (412) are provided with tooth grooves distributed in the direction of extension degree; and two ends of the sliding block (41) along the moving direction are respectively provided with a scrap scraping plate (413).

4. The forward air chuck as set forth in claim 1, wherein: the gear assembly (7) comprises a first fluted disc (71) and a second fluted disc (72) which are sequentially sleeved on the inner sleeve (2), and a pair of first gap bridge gear assemblies (73) and a pair of second gap bridge gear assemblies (74); the gear assembly further comprises a plurality of supporting pieces (75) fixedly arranged at the rear end of the chuck body (1), and the first bridge gear assembly (73) and the second bridge gear assembly (74) are respectively rotatably arranged on the supporting pieces (75); the tooth grooves of the first fluted disc (71) and the pair of sliding blocks (41) are respectively meshed with the first bridge gear assembly (73); the second fluted disc and the tooth grooves of the other pair of sliding blocks (41) are respectively meshed with a second bridge gear assembly (74).

5. The forward air chuck as set forth in claim 1, wherein: the pneumatic assembly (8) comprises a first cylinder assembly (81) and a second cylinder assembly (82); the first cylinder assembly (81) comprises a first cylinder (811), a first mounting pin (812), a first connecting block (813), a first guide pin (814) and a first side lug (815); the first air cylinder (811) is rotatably connected to the first mounting pin (812); two ends of the first mounting pin (812) are respectively mounted on the front end surface of the gas distribution ring assembly (3) and the rear end surface of the chuck body (1); the first guide pin (814) is rotatably connected with the first air cylinder (811) through a first connecting block (813); one end of the first side lug (815) is fixedly connected with the first fluted disc (71), and the other end of the first side lug is fixedly connected with the first guide pin (814); the second cylinder assembly (82) comprises a second cylinder (821), a second mounting pin (822), a second connecting block (823), a second guide pin (824) and a second side lug (825); the second air cylinder (821) is rotatably connected to the second mounting pin (822); two ends of the second mounting pin (822) are respectively mounted on the front end surface of the gas distribution ring assembly (3) and the rear end surface of the chuck body (1); the second guide pin (824) is rotatably connected with the second air cylinder (821) through a second connecting block (823); one end of the second side lug (825) is fixedly connected with the second fluted disc (72), and the other end of the second side lug is fixedly connected with the second guide pin (824).

6. The forward air chuck as set forth in claim 1, wherein: the gas distribution ring assembly (3) comprises a gas sealing disc (31), a sealing support ring (32) and a sealing gland (33); two ends of the air sealing disc (31) are fixedly connected with the rear end of the inner sleeve (2) and the front end of the driven gear (9) respectively; the gas sealing disc (31) is provided with a flange part (311); the sealing support ring (32) is rotatably sleeved on the air sealing disc (31); the sealing gland (33) is fixedly sleeved on the gas sealing disc (31); the flange part (311) and the sealing gland (33) are respectively arranged on two sides of the sealing support ring (32); and the outer peripheral surface of the sealing support ring (32) is provided with an air inlet (321) and an air outlet (322) which are communicated with an external air source.

7. The forward air chuck as set forth in claim 6, wherein: the sealing support ring is characterized in that air path grooves (323) are formed in two sides of the sealing support ring (32), sealing rings (324) which are in clearance fit along the axial direction are arranged in the air path grooves (323), and a plurality of air holes are uniformly distributed in the sealing rings (324); the air sealing disc (31) is provided with a first air passage (312) communicated with an air passage groove (323) at one side through the air hole; the sealing gland (33) is provided with a second air passage (331) communicated with the air passage groove (323) at the other side through the air hole; and a third air passage (313) communicated with the second air passage (331) is also arranged on the air sealing disc (31).

8. The forward air chuck as set forth in claim 1, wherein: a plurality of through holes are uniformly distributed on the driven gear (9) along the circumferential direction.

9. The forward air chuck as set forth in claim 1, wherein: and the base (6) is provided with a groove matched with the bearing (5).

10. A front-loading air chuck according to claim 1 or 9, wherein: one side of the base (6) is provided with a filtering device (61).