CN115246146B

CN115246146B - Mute pneumatic cutter head of cutting machine

Info

Publication number: CN115246146B
Application number: CN202210826683.0A
Authority: CN
Inventors: 刘�文
Original assignee: Gbos Laser Inc
Current assignee: Gbos Laser Inc
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-03-10
Anticipated expiration: 2042-07-13
Also published as: CN115246146A

Abstract

The invention belongs to the technical field of cutting tool bits, and particularly relates to a mute pneumatic tool bit of a cutting machine, which comprises a body, wherein a notch is formed in the edge of the back surface of a tool handle of a blade of the body, and a convex part is arranged on the edge of the front surface of the tool handle; a groove is formed in a placing groove at the second end of the cutter head piston of the body, the cutter handle is embedded in the placing groove, and the convex part is embedded in the groove; the inner end of the inner hexagon bolt is propped in the gap; according to the invention, the back of the blade is provided with the notch, the edge of the front of the blade is provided with the convex part, the blade is limited, the problem of looseness of the hexagon socket head cap screw can be solved timely, the blade can be still limited in the placing groove, meanwhile, when an operator cuts an object, the operator can easily perceive the loosening condition of the blade by holding the body, the blade is still limited in the placing groove instead of being directly separated from the placing groove, the operator can stop the work of the pneumatic cutter head, and the work safety of the operator is ensured.

Description

Mute pneumatic cutter head of cutting machine

Technical Field

The invention belongs to the technical field of cutting tool bits, and particularly relates to a mute pneumatic tool bit of a cutting machine.

Background

The tool bit is the cutting machine and is realizing cutting an indispensable device in the product action, and current tool bit is mostly the compressed gas drive, and pneumatic tool bit low cost and comparatively safety.

The utility model discloses a No. CN214836553U, a pneumatic tool bit that provides, including case subassembly and cutter arbor piston, the case subassembly has seted up first return passage, second return passage and first cavity, first return passage communicates with each other with first cavity, the department of intercommunication of first return passage and second return passage is provided with first case, first case can switch between the first state of shutoff in first return passage and the second state of shutoff in second return passage, first case is used for switching compressed gas's flow path, the cutter arbor piston includes first end and second end, first end sets up in first cavity and the outer wall of first end closely supports with the inner wall of first cavity along axial slip, the lateral wall of first cavity has seted up the passageway of leaking gas, the blade is installed to the second end. The first valve core of the patent can change the blocking state by continuously charging compressed gas, and the switching frequency of the first valve core between the first state and the second state is improved.

This pneumatic tool bit has improved the back and forth movement frequency of blade, but also has other problems, for example the stability of being connected between blade and the cutter arbor piston, directly push up the blade in the cutter arbor piston second end standing groove through the bolt, this pneumatic tool bit is at the operation in-process, collide with by the cutting object, the vibrational force of multiple times collision production, easily loose the bolt vibration, and the back edge of blade is the linearity, after the bolt is not hard up, the blade drops, the continuation back and forth movement of cutter arbor piston, extrude on the blade, splash operating personnel easily on one's body, especially the back and forth movement frequency that this pneumatic tool bit improves, the possibility that the blade was dropped in the extrusion collision of cutter arbor piston has been increased, there is the operation potential safety hazard.

Therefore, the invention provides a mute pneumatic cutter head of a cutting machine.

Disclosure of Invention

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the invention for solving the technical problem is as follows: the mute pneumatic cutter head of the cutting machine comprises a body, wherein a notch is formed in the edge of the back face of a cutter handle of a blade of the body, and a convex part is arranged on the edge of the front face of the cutter handle; a groove is formed in a placing groove at the second end of the cutter head piston of the body, the cutter handle is embedded in the placing groove, and the convex part is embedded in the groove; the inner end of the inner hexagon bolt is propped in the gap; the cutter head is an indispensable device for realizing the action of cutting products by the cutting machine, the existing cutter head is driven by compressed gas mostly, and the pneumatic cutter head is low in cost and safe; the utility model discloses a No. CN214836553U, a pneumatic tool bit that provides, including case subassembly and cutter arbor piston, the case subassembly has seted up first return passage, second return passage and first cavity, first return passage communicates with each other with first cavity, the department of intercommunication of first return passage and second return passage is provided with first case, first case can switch between the first state of shutoff in first return passage and the second state of shutoff in second return passage, first case is used for switching compressed gas's flow path, the cutter arbor piston includes first end and second end, first end sets up in first cavity and the outer wall of first end closely supports with the inner wall of first cavity along axial slip, the lateral wall of first cavity has seted up the passageway of leaking gas, the blade is installed to the second end. The first valve core of the patent can change the blocking state by continuously charging compressed gas, and the switching frequency of the first valve core between the first state and the second state is improved.

The pneumatic cutter head improves the reciprocating motion frequency of the blade, but has other problems, such as the connection stability between the blade and the cutter bar piston, the blade is directly propped against the placing groove on the second end of the cutter bar piston through the bolt, the pneumatic cutter head collides with a cut object in the operation process, the bolt is easy to vibrate and loosen due to the vibration force generated by multiple collisions, the edge of the back surface of the blade is linear, the blade falls off after the bolt loosens, the cutter bar piston continues to reciprocate and is extruded on the blade, the blade is easy to splash onto an operator, particularly the reciprocating motion frequency improved by the pneumatic cutter head increases the possibility that the cutter bar piston extrudes and collides with the falling blade, and the potential safety hazard exists; according to the invention, the back surface of the blade is provided with the notch, the edge of the front surface of the blade is provided with the convex part, the blade is limited, the problem that the hexagon socket head cap screw is loosened can be solved timely, the blade can be still limited in the placing groove, meanwhile, when an operator cuts an object, the operator can hold the body by hand, the loosening condition of the blade can be easily perceived, the blade is still limited in the placing groove at the moment, but is not directly separated from the placing groove, the operator can stop the work of the pneumatic cutter head, the hexagon socket head cap screw is tightened, and the work safety of the operator is ensured.

Preferably, a circular through groove is formed in the end face of the rectangular portion, arc-shaped openings are symmetrically formed in two sides of the through groove, an oval-shaped pressure spring is arranged in the through groove, one end of the pressure spring is embedded into the arc-shaped groove formed in the outer end face of the inner hexagon bolt, and the other end of the pressure spring abuts against the top face in the through groove; interior hex bolts's not hard up, derive from the vibration that the blade cutting object produced, it is lax to rotate the vibration of interior hex bolts, set up the pressure spring for this, put into logical inslot along the arc mouth with the pressure spring, and push down the pressure spring, rotate 90 degrees, make the one end embedding of pressure spring in the arc wall, the other end top of pressure spring is leading to inslot top surface position, interior hex bolts is pushed down by the pressure spring this moment, can offset the vibrational force that the blade cutting object produced, fix interior hex bolts, thereby the length of time that the extension blade is stable.

Preferably, an elliptical plate is arranged between the other end of the pressure spring and the top surface in the through groove, one surface of the elliptical plate is fixedly connected with one end of the pressure spring, the other surface of the elliptical plate is symmetrically provided with convex points, and the convex points are embedded into concave points formed in the top surface in the through groove; put into logical inslot with the same extrusion of elliptical plate intercommunication pressure spring, then rotatory elliptical plate, the elliptical plate rotates 90 degrees, and the one end embedding of pressure spring is in the arc wall, and the bump embedding of elliptical plate is in the concave point simultaneously, and the rotation of pressure spring is restricted this moment to hexagon socket head cap screw's rotation in the restriction further improves hexagon socket head cap screw's stability, thereby when the extension blade is stable.

Preferably, an oil inlet hole is formed in one side of the outer ring of the tool bit fixing seat of the body, an oil inlet pipe is arranged on the tool bit cover body of the body, the oil inlet pipe penetrates through the tool bit cover body and is communicated with the oil inlet hole, and the oil inlet pipe is bound on the outer shell of the body; pneumatic tool bit has improved the round trip motion frequency of blade, but also can bring other problems along with it, and blade and cutter holder move together, and the frequency of motion improves, and relative sliding friction damage also strengthens thereupon between cutter holder and the tool bit fixing base simultaneously, and the oil pipe is advanced in the setting for this reason, and timely supplementary lubricating oil, lubricating oil lubricate between cutter holder and the tool bit fixing base, alleviate wearing and tearing, increase of service life.

Preferably, the cross section of the oil inlet hole is rectangular, the inner end of the oil inlet hole is wide-mouthed, a rubber sheet is arranged in the inner end of the oil inlet hole, one end of the rubber sheet is fixedly connected to the horizontal middle position in the oil inlet hole, and the other end of the rubber sheet is fixedly connected to a rectangular groove formed in the curved surface of the tool holder and horizontally arranged in the middle position of the rectangular groove; the upper side and the lower side in the rectangular groove are provided with oil passages, and the oil passages are formed along the interior of the tool holder and extend to the surface of the rectangular part of the tool holder; the cutter holder makes a reciprocating motion, drive the sheet rubber luffing motion, when the sheet rubber upswing, the sheet rubber dwindles with the space of wide-mouth portion gradually, extrude the lubricating oil of wide-mouth portion inner space in the oil duct, lubricating oil stretches to cutter holder and standing groove position along the oil duct, lubricate this position, when the sheet rubber downswing, the space of wide-mouth portion top increases, form the negative pressure simultaneously, with external lubricating oil suction wide-mouth portion in the space of wide-mouth portion top, sheet rubber downswing and wide-mouth position formation space reduce gradually simultaneously, extrude the lubricating oil of wide-mouth portion below space in the oil duct, the repetitive motion, have the suction wide-mouth portion with external lubricating oil, extrude the oil duct simultaneously, namely, when pneumatic tool bit uses, lubricating oil automatic suction realizes the lubrication protection, and need not add extra fuel feeding equipment, reduce equipment investment cost, even if install fuel feeding equipment, need consider the opening and stopping of fuel feeding equipment, bring unnecessary trouble and equipment maintenance.

Preferably, the wide-mouth inner edge of the oil inlet is provided with rubber blocks in an up-and-down symmetrical manner, and the edge of each rubber block is flush with the wide-mouth inner edge of the oil inlet; the oscillating back and forth from top to bottom of the sheet rubber, need consider the leakproofness between the inward flange about rubber and the wide-mouth portion, the leakproofness is low, lubricating oil in the wide-mouth portion is difficult to arrange the oil duct into, external lubricating oil is difficult to the suction simultaneously, the position need hug closely the sheet rubber and attach the setting in wide-mouth portion inward flange, but also can cause sheet rubber and wide-mouth portion extrusion friction, make the sheet rubber break, set up the block rubber for this reason, when the sheet rubber extrudees to the block rubber, the block rubber is squashed by the extrusion, slow down the wearing and tearing to the sheet rubber, also help improving the leakproofness between sheet rubber and the wide-mouth portion, thereby help with suction and the discharge of lubricating oil.

Preferably, the other end of the rubber sheet is provided with elastic antennae which are symmetrically arranged up and down, one end of each antenna is fixedly connected to the middle position of the rubber sheet, and the other end of each antenna is spherical and is plugged at the oil inlet port of the oil duct; the oil duct communicates with the wide-mouth portion of inlet port, form the negative pressure in-process between sheet rubber and wide-mouth portion, partial lubricating oil in the oil duct also can be returned in the wide-mouth portion by the suction, influence the discharge amount of lubricating oil, thereby influence lubricating oil to the lubrication effect between cutter holder and the standing groove, set up the feeler for this reason, in the sheet rubber luffing motion in-process, the sheet rubber upswing, the sheet rubber below feeler amount other end is close to in the inlet port department of oil duct, block up the oil duct, thereby the effective external lubricating oil of suction of wide-mouth portion of sheet rubber below, rather than drawing back the lubricating oil in the oil duct, and on the same hand, when the sheet rubber downswing, also be the above-mentioned, the effective external lubricating oil of suction of wide-mouth portion of sheet rubber below, rather than drawing back the lubricating oil in the oil duct.

Preferably, an elastic strip is arranged inside the antenna, one end of the elastic strip extends to the other end of the antenna, and the other end of the elastic strip is fixedly connected to an iron sheet arranged inside the other end of the rubber sheet; through setting up the elasticity strip, with the swing direction restriction of antenna, the sheetrubber luffing motion in-process, in addition antenna self inertia, can the horizontal hunting, the inside elasticity strip that sets up the billet material at the antenna, at the inside iron sheet of cooperation sheetrubber, with the swing range restraint of antenna, when making the sheetrubber luffing motion, the other end of antenna can effectively be clogged the shutoff at the oil inlet port department of oil duct, thereby the effective external lubricating oil of suction of wide oral area of sheetrubber below, rather than take out the lubricating oil in the oil duct back.

Preferably, the outer ring of the tool holder is provided with a diversion trench up and down, and the tail end of the diversion trench extends to the surface of the rectangular part of the tool holder; through setting up the guiding gutter, with unnecessary lubricating oil drainage to the refluence inslot in the oil feed hole to make more lubricating oil stretch to the surface of cutter holder, improve lubricated effect.

Preferably, a straight groove is formed in the middle of the elliptical plate; the hexagon spanner is used for screwing the hexagon socket head cap screw, then the compression spring is communicated with the elliptical plate and is embedded into the through groove, the straight groove is inserted into the straight bolt cutter, the rotation is 90 degrees, the convex points are embedded into the concave points, and the straight groove is arranged, so that the elliptical plate can be conveniently clamped and taken down in a rotating mode.

The invention has the following beneficial effects:

1. according to the mute pneumatic cutter head of the cutting machine, the back face of the blade is provided with the notch, the edge of the front face of the blade is provided with the convex part, the blade is limited, the problem that the hexagon socket head cap screw looses is solved timely, the blade can be still limited in the placing groove, meanwhile, when an operator cuts an object, the operator can hold the body by hand, the loosening condition of the blade can be easily detected, the blade is still limited in the placing groove at the moment, the blade is not directly separated from the placing groove, the operator can stop the work of the pneumatic cutter head, the hexagon socket head cap screw is tightened, and the work safety of the operator is guaranteed.

2. According to the mute pneumatic cutter head of the cutting machine, the pressure spring is arranged, the pressure spring is placed into the through groove along the arc-shaped opening, the pressure spring is pressed downwards and rotates for 90 degrees, one end of the pressure spring is embedded into the arc-shaped groove, the other end of the pressure spring abuts against the inner top surface of the through groove, the inner hexagonal bolt is pressed by the pressure spring, the vibration force generated when the blade cuts an object can be offset, the inner hexagonal bolt is fixed, and therefore the stable time of the blade is prolonged.

Drawings

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

FIG. 1 is a perspective view of a silent pneumatic cutter head of the cutting machine of the present invention;

FIG. 2 is a perspective view of the bit piston and the bit mount of the present invention;

FIG. 3 is a perspective view of an insert of the present invention in cooperation with a tool holder;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a view showing the engagement of a compression spring with a hexagon socket head cap screw according to the present invention;

FIG. 6 is a cross-sectional view of the insert of the present invention in mating engagement with a toolholder;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

FIG. 8 is a perspective view of the guide slot and tool holder of the present invention;

figure 9 is a perspective view of the engagement of the linear slot and the elliptical plate of the present invention.

In the figure: the tool bit comprises a body 1, a tool bit piston 101, a blade 2, a notch 3, a convex part 4, a groove 5, a hexagon socket head cap screw 6, a through groove 7, an arc-shaped opening 8, a pressure spring 9, an arc-shaped groove 10, an elliptical plate 11, a convex point 12, a concave point 13, a tool bit fixing seat 14, an oil inlet hole 15, a tool bit cover body 16, a rubber sheet 17, a tool holder 171, a rectangular groove 18, an oil passage 19, a rubber block 20, an antenna 21, an elastic strip 22, an iron sheet 23, a flow guide groove 24 and a straight groove 25.

Detailed Description

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

The first embodiment is as follows:

referring to fig. 1, 2 and 6, the mute pneumatic cutter head of the cutting machine comprises a body 1, wherein a notch 3 is formed in the edge of the back side of a cutter handle of a blade 2 of the body 1, and a convex part 4 is arranged on the edge of the front side of the cutter handle; a groove 5 is formed in a placing groove at the second end of the cutter head piston 101 of the body 1, the cutter handle is embedded in the placing groove, and the convex part 4 is embedded in the groove 5; the inner hexagonal bolt 6 is connected with a threaded hole in the rectangular part of the tool holder 171 on the body 1 in a threaded manner, and the inner end of the inner hexagonal bolt 6 is propped against the notch 3; the cutter head is an indispensable device for realizing the action of cutting products by the cutting machine, the existing cutter head is driven by compressed gas mostly, and the pneumatic cutter head is low in cost and safe; the utility model discloses a CN214836553U, the pneumatic tool bit that provides, including case subassembly and cutter arbor piston, the case subassembly has seted up first return passage, second return passage and first cavity, first return passage communicates with each other with first cavity, the department of intercommunication of first return passage and second return passage is provided with first case, first case can switch between the first state of shutoff in first return passage and the second state of shutoff in second return passage, first case is used for switching compressed gas's flow path, the cutter arbor piston includes in first end and the terminal standing groove, first end sets up in first cavity and the outer wall of first end closely supports with the inner wall of first cavity along axial slip, the bleeder channel has been seted up to the lateral wall of first cavity, the blade 2 is installed to the terminal standing groove. The first valve core of the patent can change the blocking state by continuously charging compressed gas, and the switching frequency of the first valve core between the first state and the second state is improved.

The pneumatic cutter head improves the reciprocating motion frequency of the blade 2, but has other problems, such as the connection stability between the blade 2 and the cutter bar piston, the blade 2 is directly propped against the upper placing groove in the placing groove at the tail end of the cutter bar piston through the bolt, the pneumatic cutter head collides with a cut object in the operation process, the bolt is easy to vibrate and loosen due to the vibration force generated by multiple collisions, the edge of the back surface of the blade 2 is linear, after the bolt is loosened, the blade 2 falls off, the cutter bar piston continues to reciprocate and is extruded on the blade 2, the pneumatic cutter head is easy to splash onto an operator, particularly the reciprocating motion frequency improved by the pneumatic cutter head increases the possibility that the cutter bar piston extrudes and collides with the falling blade 2, and the potential safety hazard of operation exists; according to the invention, the back of the blade 2 is provided with the notch 3, the edge of the front of the blade 2 is provided with the convex part 4, the blade 2 is limited, the problem of looseness of the hexagon socket head cap screw 6 is solved timely, the blade 2 can still be limited in the placing groove, meanwhile, when an operator cuts an object, the operator can easily perceive the looseness of the blade 2 by holding the body 1, the blade 2 is still limited in the placing groove at the moment, and the blade 2 is not directly separated from the placing groove, so that the operator can stop the work of the pneumatic cutter head, tighten the hexagon socket head cap screw 6, and the work safety of the operator is ensured.

Referring to fig. 3, 4 and 5, a circular through groove 7 is formed in the end face of the rectangular portion, arc-shaped openings 8 are symmetrically formed in two sides of the through groove 7, an oval-shaped pressure spring 9 is arranged in the through groove 7, one end of the pressure spring 9 is embedded into an arc-shaped groove 10 formed in the outer end face of the hexagon socket head cap screw 6, and the other end of the pressure spring 9 abuts against the inner top face of the through groove 7; interior hex bolts 6 not hard up, derive from the vibration that blade 2 cutting object produced, it is lax to rotate interior hex bolts 6 vibration, set up pressure spring 9 for this, put into logical groove 7 with pressure spring 9 along arc mouth 8, and push down pressure spring 9, rotate 90 degrees, make the one end embedding of pressure spring 9 in the arc wall 10, the other end top of pressure spring 9 is at logical inslot 7 top surface position, interior hex bolts 6 was pushed down by pressure spring 9 this moment, can offset the vibrational force that blade 2 cutting object produced, fix interior hex bolts 6, thereby it is long when extension blade 2 is stable.

Referring to fig. 4 and 5, an elliptical plate 11 is arranged between the other end of the compression spring 9 and the inner top surface of the through groove 7, one surface of the elliptical plate 11 is fixedly connected with one end of the compression spring 9, the other surface of the elliptical plate 11 is symmetrically provided with convex points 12, and the convex points 12 are embedded into concave points 13 formed in the inner top surface of the through groove 7; put into logical groove 7 with 11 mutual extrudions of elliptical plate intercommunication pressure spring 9, then rotatory elliptical plate 11, elliptical plate 11 rotates 90 degrees, and the one end embedding of pressure spring 9 is in arc wall 10, and the bump 12 embedding of elliptical plate 11 is in concave point 13 simultaneously, and the rotation of pressure spring 9 this moment is restricted to restriction hexagon socket head cap screw 6's rotation, further improve hexagon socket head cap screw 6's stability, thereby it is long when extension blade 2 is stable.

Referring to fig. 6, an oil inlet 15 is formed in one side of an outer ring of a tool bit fixing seat 14 of the body 1, an oil inlet pipe is arranged on a tool bit cover body 16 of the body 1, the oil inlet pipe penetrates through the tool bit cover body 16 and is communicated with the oil inlet 15, and the oil inlet pipe is bound on an outer shell of the body 1; pneumatic tool bit has improved the back and forth movement frequency of blade 2, but also can bring other problems thereupon, and blade 2 and cutter holder 171 together move, and the frequency of motion improves, and relative sliding friction damage also strengthens thereupon between cutter holder 171 and the tool bit fixing base 14 simultaneously, sets up into oil pipe for this reason, and timely supplementary lubricating oil lubricates between cutter holder 171 and the tool bit fixing base 14, alleviates wearing and tearing, increase of service life.

Referring to fig. 6, 7 and 8, the cross section of the oil inlet hole 15 is rectangular, the inner end of the oil inlet hole 15 is wide-mouthed, a rubber sheet 17 is arranged in the inner end of the oil inlet hole 15, one end of the rubber sheet 17 is fixedly connected to the horizontal middle position in the oil inlet hole 15, and the other end of the rubber sheet 17 is fixedly connected to a rectangular groove 18 formed in the curved surface of the tool holder 171 and is horizontally arranged at the middle position of the rectangular groove 18; the upper side and the lower side in the rectangular groove 18 are provided with oil passages 19, and the oil passages 19 are formed along the interior of the tool holder 171 and extend to the surface of the rectangular part of the tool holder 171; the tool holder 171 reciprocates repeatedly to drive the rubber sheet 17 to swing up and down, when the rubber sheet 17 swings upwards, the space between the rubber sheet 17 and the wide mouth part is gradually reduced, the lubricating oil in the space in the wide mouth part is extruded into the oil duct 19, the lubricating oil stretches to the positions of the tool holder 171 and the placing groove along the oil duct 19, the lubricating treatment is carried out on the positions, when the rubber sheet 17 swings downwards, the space above the wide mouth part is increased, negative pressure is formed, the external lubricating oil is pumped into the space above the wide mouth part, the space formed by the downward swing of the rubber sheet 17 and the wide mouth part is gradually reduced, the lubricating oil in the space below the wide mouth part is extruded into the oil duct 19, the external lubricating oil is pumped into the wide mouth part and is simultaneously extruded and discharged into the oil duct 19, namely, when the pneumatic tool bit is used, the lubricating oil is automatically pumped in to realize the lubricating protection, no extra oil supply equipment is required to be added, the equipment investment cost is reduced, even if the oil supply equipment is installed, the starting and stopping of the oil supply equipment needs to be considered, and unnecessary inconvenience and equipment maintenance are brought.

Referring to fig. 7, the wide-mouth inner edge of the oil inlet hole 15 is provided with rubber blocks 20 symmetrically up and down, and the edge of the rubber block 20 is flush with the wide-mouth inner edge of the oil inlet hole 15; oscillating back and forth about the sheet rubber 17, need consider the leakproofness between the inward flange about rubber and wide-mouth portion, the leakproofness is low, lubricating oil in the wide-mouth portion is difficult to the oil duct 19 of discharging, external lubricating oil is difficult to the suction simultaneously, the position need be hugged closely sheet rubber 17 and attach the setting at wide-mouth portion inward flange, but also can cause sheet rubber 17 and wide-mouth portion extrusion friction, make sheet rubber 17 break, set up block rubber 20 for this reason, when sheet rubber 17 extrudees to block rubber 20, block rubber 20 is squashed by the extrusion, slow down the wearing and tearing to sheet rubber 17, also help improving the leakproofness between sheet rubber 17 and the wide-mouth portion, thereby help with suction and the discharge of lubricating oil.

Referring to fig. 7, the other end of the rubber sheet 17 is provided with elastic antennae 21 which are arranged in a vertically symmetrical manner, one end of the antennae 21 is fixedly connected to the middle position of the rubber sheet 17, and the other end of the antennae 21 is spherical and is plugged at the oil inlet port of the oil passage 19; the oil duct 19 is communicated with the wide-mouth part of the oil inlet 15, in the process of forming negative pressure between the rubber sheet 17 and the wide-mouth part, part of lubricating oil in the oil duct 19 can be pumped into and returned to the wide-mouth part, the discharge amount of the lubricating oil is influenced, and therefore the lubricating effect of the lubricating oil on the lubricating oil between the tool holder 171 and the placing groove is influenced, the feeler 21 is arranged for the purpose, in the process of swinging the rubber sheet 17 up and down, the rubber sheet 17 swings upwards, the other end of the feeler 21 below the rubber sheet 17 is close to the oil inlet of the oil duct 19, the oil duct 19 is sealed and blocked, and therefore the wide-mouth part below the rubber sheet 17 is effectively pumped into the outside lubricating oil instead of pumping the lubricating oil in the oil duct 19.

Referring to fig. 7, an elastic strip 22 is arranged inside the antenna 21, one end of the elastic strip 22 extends to the other end of the antenna 21, and the other end of the elastic strip 22 is fixedly connected to an iron sheet 23 arranged inside the other end of the rubber sheet 17; through setting up elastic strip 22, with the swing direction restriction of feeler 21, the in-process of the luffing motion of sheet rubber 17, in addition feeler 21 self inertia, can the horizontal hunting, at the inside elastic strip 22 that sets up the billet material of feeler 21, at the inside iron sheet 23 of cooperation sheet rubber 17, retrain the swing range of feeler 21, when making sheet rubber 17 luffing motion, the shutoff can effectively be filled to feeler 21's the other end at the oil inlet port department of oil duct 19, thereby the wide oral area portion of sheet rubber 17 below effectively aspirates external lubricating oil, rather than take out the lubricating oil in the oil duct 19 back.

Referring to fig. 8, the outer ring of the tool holder 171 is provided with guide grooves 24 at the upper and lower sides, and the end placement grooves of the guide grooves 24 extend to the surface of the rectangular portion of the tool holder 171; through setting up guiding gutter 24, with in the oil inlet 15 unnecessary lubricating oil drainage to the refluence inslot to make more lubricating oil stretch to the surface of cutter holder 171, improve lubricated effect.

Example two:

referring to fig. 9, a first comparative example is another embodiment of the present invention, wherein a linear groove 25 is formed in the middle of the elliptical plate 11; screwing up hexagon socket head cap screw 6 through the hexagonal spanner, then communicating the leading to inslot 7 of 11 imbeds of elliptical plate with pressure spring 9 to insert a word groove 25 with a word shank of bolt sword, rotatory 90 degrees can, in 12 embedding concave points 13 of bump, the word groove 25 of setting, the convenience is to the rotatory block of elliptical plate 11 and take off.

The working principle is as follows: according to the invention, the back surface of the blade 2 is provided with the notch 3, and the edge of the front surface of the blade 2 is provided with the convex part 4, so that the blade 2 is limited, and the problem of looseness of the hexagon socket head cap screw 6 can be solved timely, the blade 2 can still be limited in the placing groove, meanwhile, when an operator cuts an object, the operator can hold the body 1 by hand, the looseness of the blade 2 can be easily detected, at the moment, the blade 2 is still limited in the placing groove, but not directly separated from the placing groove, the operator can stop the work of the pneumatic cutter head, and the hexagon socket head cap screw 6 is tightened, so that the work safety of the operator is ensured;

the inner hexagonal bolt 6 is loosened, vibration generated by the blade 2 cutting an object is generated, the inner hexagonal bolt 6 is vibrated, rotated and loosened, a pressure spring 9 is arranged for the purpose, the pressure spring 9 is placed into the through groove 7 along the arc-shaped opening 8, the pressure spring 9 is pressed downwards, the inner hexagonal bolt is rotated for 90 degrees, one end of the pressure spring 9 is embedded into the arc-shaped groove 10, the other end of the pressure spring 9 abuts against the inner top surface of the through groove 7, at the moment, the inner hexagonal bolt 6 is pressed by the pressure spring 9, the vibration force generated by the blade 2 cutting the object can be offset, the inner hexagonal bolt 6 is fixed, and therefore the stable time of the blade 2 is prolonged;

the elliptical plate 11 is communicated with the pressure spring 9 to be extruded together and placed into the through groove 7, then the elliptical plate 11 is rotated, the elliptical plate 11 rotates for 90 degrees, one end of the pressure spring 9 is embedded into the arc-shaped groove 10, meanwhile, the convex points 12 of the elliptical plate 11 are embedded into the concave points 13, and at the moment, the rotation of the pressure spring 9 is limited, so that the rotation of the hexagon socket head cap screw 6 is limited, the stability of the hexagon socket head cap screw 6 is further improved, and the stable duration of the blade 2 is prolonged;

the pneumatic cutter head improves the back-and-forth movement frequency of the blade 2, but other problems can be brought along with the back-and-forth movement frequency, the blade 2 and the cutter holder 171 move together, the movement frequency is improved, and meanwhile, the relative sliding friction damage between the cutter holder 171 and the cutter head fixing seat 14 is also enhanced, so that an oil inlet pipe is arranged for timely supplementing lubricating oil, the lubricating oil lubricates the space between the cutter holder 171 and the cutter head fixing seat 14, the abrasion is reduced, and the service life is prolonged;

the tool holder 171 moves back and forth repeatedly to drive the rubber sheet 17 to swing up and down, when the rubber sheet 17 swings upwards, the space between the rubber sheet 17 and the wide-mouth part is gradually reduced, the lubricating oil in the space in the wide-mouth part is extruded into the oil duct 19, the lubricating oil extends to the positions of the tool holder 171 and the placing groove along the oil duct 19, the lubricating treatment is carried out on the positions, when the rubber sheet 17 swings downwards, the space above the wide-mouth part is increased, negative pressure is formed, the external lubricating oil is pumped into the space above the wide-mouth part, meanwhile, the space formed by the downward swing of the rubber sheet 17 and the wide-mouth part is gradually reduced, the lubricating oil in the space below the wide-mouth part is extruded into the oil duct 19, the repeated movement is carried out, the external lubricating oil is pumped into the wide-mouth part and is simultaneously extruded and discharged into the wide-mouth part 19, namely, when a pneumatic tool bit is used, the lubricating oil is automatically pumped in, the lubrication protection is realized, no additional oil supply equipment is needed to be added, the equipment investment cost is reduced, even if the oil supply equipment is installed, the start and stop of the oil supply equipment need to be considered, and unnecessary trouble and equipment maintenance are brought;

the rubber sheet 17 swings up and down, the sealing performance between rubber and the upper inner edge and the lower inner edge of the wide-mouth part needs to be considered, the sealing performance is low, lubricating oil in the wide-mouth part is difficult to discharge into the oil duct 19, meanwhile, the lubricating oil outside is difficult to suck, the rubber sheet 17 needs to be attached to the inner edge of the wide-mouth part in a clinging mode, however, the rubber sheet 17 and the wide-mouth part can be extruded and rubbed, the rubber block 20 is arranged, when the rubber sheet 17 is extruded to the rubber block 20, the rubber block 20 is extruded and flattened, abrasion to the rubber sheet 17 is reduced, the sealing performance between the rubber sheet 17 and the wide-mouth part is also improved, and therefore the lubricating oil can be sucked and discharged;

the oil duct 19 is communicated with the wide-mouth part of the oil inlet 15, in the process of forming negative pressure between the rubber sheet 17 and the wide-mouth part, part of lubricating oil in the oil duct 19 can be pumped into and returned to the wide-mouth part, the discharging amount of the lubricating oil is influenced, and therefore the lubricating effect of the lubricating oil on the lubricating oil between the tool holder 171 and the placing groove is influenced, the feeler 21 is arranged for this purpose, in the process of vertically swinging the rubber sheet 17, the rubber sheet 17 swings upwards, the other end of the feeler 21 below the rubber sheet 17 is close to the oil inlet of the oil duct 19, the oil duct 19 is sealed, and therefore the wide-mouth part below the rubber sheet 17 effectively pumps the lubricating oil outside instead of pumping the lubricating oil in the oil duct 19, and similarly, when the rubber sheet 17 swings downwards, the wide-mouth part below the rubber sheet 17 effectively pumps the lubricating oil outside instead of pumping the lubricating oil in the oil duct 19;

the swinging direction of the antenna 21 is limited by arranging the elastic strip 22, the antenna 21 can swing left and right by the inertia of the antenna 21 in the up-and-down swinging process of the rubber sheet 17, the elastic strip 22 made of steel bars is arranged in the antenna 21, and the swinging amplitude of the antenna 21 is limited by matching with the iron sheet 23 in the rubber sheet 17, so that the other end of the antenna 21 can be effectively plugged and blocked at the oil inlet port of the oil duct 19 when the rubber sheet 17 swings up and down, and the wide opening part below the rubber sheet 17 can effectively suck in the outside lubricating oil instead of sucking back the lubricating oil in the oil duct 19;

by arranging the guide grooves 24, redundant lubricating oil in the oil inlet hole 15 is guided to the backflow grooves, so that more lubricating oil is spread to the surface of the tool holder 171, and the lubricating effect is improved; screwing up hexagon socket head cap screw 6 through the hexagonal spanner, then communicating the leading to inslot 7 of 11 imbeds of elliptical plate with pressure spring 9 to insert a word groove 25 with a word shank of bolt sword, rotatory 90 degrees can, in 12 embedding concave points 13 of bump, the word groove 25 of setting, the convenience is to the rotatory block of elliptical plate 11 and take off.

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

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

Claims

1. The utility model provides a pneumatic tool bit of cutting machine silence, includes body (1), its characterized in that: a notch (3) is formed in the edge of the back face of the cutter handle of the blade (2) of the body (1), and a convex part (4) is arranged on the edge of the front face of the cutter handle; a groove (5) is formed in a placing groove at the second end of the cutter head piston of the body (1), the cutter handle is embedded in the placing groove, and the convex part (4) is embedded in the groove (5); the inner end of the inner hexagon bolt (6) is propped against the notch (3);

a circular through groove (7) is formed in the end face of the rectangular portion, arc-shaped openings (8) are formed in two sides of the through groove (7) symmetrically, an oval-shaped pressure spring (9) is arranged in the through groove (7), one end of the pressure spring (9) is embedded into an arc-shaped groove (10) formed in the outer end face of the inner hexagon bolt (6), and the other end of the pressure spring (9) abuts against the inner top face of the through groove (7).

2. The mute pneumatic cutter head of the cutting machine as claimed in claim 1, wherein: an elliptical plate (11) is arranged between the other end of the pressure spring (9) and the inner top surface of the through groove (7), one surface of the elliptical plate (11) is fixedly connected with one end of the pressure spring (9), the other surface of the elliptical plate (11) is symmetrically provided with convex points (12), and the convex points (12) are embedded into concave points (13) formed in the inner top surface of the through groove (7).

3. The mute pneumatic cutter head of the cutting machine as claimed in claim 1, wherein: an oil inlet hole (15) is formed in one side of an outer ring of the tool bit fixing seat (14) of the body (1), an oil inlet pipe is arranged on the tool bit cover body (16) of the body (1), the oil inlet pipe penetrates through the tool bit cover body (16) and is communicated with the oil inlet hole (15), and the oil inlet pipe is bound on an outer shell of the body (1).

4. The mute pneumatic cutter head of the cutting machine as claimed in claim 3, wherein: the cross section of the oil inlet hole (15) is rectangular, the inner end of the oil inlet hole (15) is wide-mouthed, a rubber sheet (17) is arranged in the inner end of the oil inlet hole (15), one end of the rubber sheet (17) is fixedly connected to the horizontal middle position in the oil inlet hole (15), and the other end of the rubber sheet (17) is fixedly connected to a rectangular groove (18) formed in the curved surface of the tool holder (171) and horizontally arranged in the middle position of the rectangular groove (18); oil ducts (19) are formed in the upper side and the lower side of the rectangular groove (18), and the oil ducts (19) are formed in the tool holder (171) and extend to the surface of the rectangular portion of the tool holder (171).

5. The mute pneumatic cutter head of the cutting machine as claimed in claim 4, wherein: the wide-mouth inner edge of the oil inlet hole (15) is arranged at the position of the wide-mouth inner edge in an up-and-down symmetrical mode and is provided with a rubber block (20), and the edge of the rubber block (20) is flush with the wide-mouth inner edge of the oil inlet hole (15).

6. The mute pneumatic cutter head of the cutting machine as claimed in claim 4, wherein: the other end of sheet rubber (17) is equipped with longitudinal symmetry and is equipped with elastic feeler (21), and the one end rigid coupling of feeler (21) is in the intermediate position of sheet rubber (17), and the other end of feeler (21) is spherical, and fills the shutoff and in the oil inlet port department of oil duct (19).

7. The mute pneumatic cutter head of the cutting machine as claimed in claim 6, wherein: the inside elasticity strip (22) that is equipped with of antenna (21), the one end of elasticity strip (22) extends to the other end of antenna (21), and the other end rigid coupling of elasticity strip (22) is on iron sheet (23) that the other end inside was equipped with of sheet rubber (17).

8. The mute pneumatic cutter head of the cutting machine as claimed in claim 4, wherein: a guide groove (24) is formed in the outer ring of the tool holder (171) in an up-and-down mode, and a placing groove in the tail end of the guide groove (24) extends to the surface of the rectangular portion of the tool holder (171).

9. The mute pneumatic cutter head of the cutting machine as claimed in claim 2, wherein: the middle position of the elliptic plate (11) is provided with a straight groove (25).