KR20160117873A - Attaching and detaching structure of multi cutter blade - Google Patents

Attaching and detaching structure of multi cutter blade Download PDF

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Publication number
KR20160117873A
KR20160117873A KR1020150045774A KR20150045774A KR20160117873A KR 20160117873 A KR20160117873 A KR 20160117873A KR 1020150045774 A KR1020150045774 A KR 1020150045774A KR 20150045774 A KR20150045774 A KR 20150045774A KR 20160117873 A KR20160117873 A KR 20160117873A
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KR
South Korea
Prior art keywords
clamp
blade
spindle housing
pusher
height direction
Prior art date
Application number
KR1020150045774A
Other languages
Korean (ko)
Inventor
정영채
Original Assignee
계양전기 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 계양전기 주식회사 filed Critical 계양전기 주식회사
Priority to KR1020150045774A priority Critical patent/KR20160117873A/en
Publication of KR20160117873A publication Critical patent/KR20160117873A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/28—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A spindle housing having a predetermined internal space and having a bottom opening and a through hole formed on an upper surface thereof; A clamp pusher having a threaded clamping jig disposed inside the spindle housing so as to be movable along a height direction of the spindle housing, the clamping jig including a clamping protrusion protruding outside the spindle housing through the through hole; A clamp cam provided on the clamp pusher to move the clamp pusher upward and downward along the height direction of the spindle housing and to selectively contact the upper surface of the clamp pusher while eccentrically rotating; A blade provided on a lower surface of the spindle housing to cut the object to be cut; A blade clamp coupled to the clamp jaw such that the blade is coupled to the lower side of the spindle housing and the clamp pusher moves together with the clamp pusher to thereby urge the blade toward the spindle housing; And a support spring installed inside the spindle housing to elastically support the lower surface of the spindle in an upward direction along the height direction of the spindle housing, thereby making it possible to quickly and easily attach and detach the blade of the multi-cutter, .

Description

TECHNICAL FIELD [0001] The present invention relates to a multi-cutter blade attachment / detachment structure,

The present invention relates to a power tool, and more particularly, to a multi-cutter blade detachable structure.

In general, a multifunctional cutter is a machine for machining an object by grinding or cutting a surface of an object made of wood, stone or metal by attaching a blade or a polishing disc to a rotary shaft rotating at a high speed by driving of a motor or compressed air of a compressor .

The conventional multifunctional cutter uses a method in which a blade or a grinding disc is fixed to a rotary shaft mounted on the main body and then fixed with a nut or a bolt is fastened to a rotary shaft to fix the disc.

Therefore, in such a structure, the fastening force is reduced due to the frictional force and the fine vibration of the blades or disks rotating at high speed as they are simply fastened to the grinder main body by the blades, disk bolts or nuts, causing psychological anxiety to the worker, A separate cover is provided around the blade or the disk in order to prevent the disk from being released during the operation and causing a safety accident.

In addition, there is a problem that when the fixing bolt for fixing the polishing disk is rotated to rotate the blades or disks due to long use, the rotating shaft rotates together. Therefore, there is a tool for unlocking the fixing bolt, There is a problem in that it takes a lot of time and effort because the work of attaching and detaching a blade or a disk using another tool, that is, two tools, must be performed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-cutter blade attaching / detaching structure capable of quickly and easily attaching and detaching blades of a multi-cutter, thereby improving user's convenience .

In order to solve the above-described problems, the present invention provides a spindle device comprising: a spindle housing having a predetermined inner space and having a bottom surface opened and a through hole formed on an upper surface; A clamp pusher having a threaded clamping jig disposed inside the spindle housing so as to be movable along a height direction of the spindle housing, the clamping jig including a clamping protrusion protruding outside the spindle housing through the through hole; A clamp cam provided on the clamp pusher to move the clamp pusher upward and downward along the height direction of the spindle housing and to selectively contact the upper surface of the clamp pusher while eccentrically rotating; A blade provided on a lower surface of the spindle housing to cut the object to be cut; A blade clamp coupled to the clamp jaw such that the blade is coupled to the lower side of the spindle housing and the clamp pusher moves together with the clamp pusher to thereby urge the blade toward the spindle housing; And a support spring installed inside the spindle housing so as to elastically support the bottom surface of the tank upward along the height direction of the spindle housing.

Here, a plurality of fasteners, through which a plurality of fastening protrusions are protruded, are coupled to a bottom surface of the spindle housing, and a plurality of fastening holes are formed in the plate surface of the blade to fasten the fastening protrusions.

A support spring may be provided between the lower surface of the clamp pusher and the blade holder to restore the clamp pusher to its original position after the clamp pusher moves.

The inner surface of the support spring may be provided with a clamp guide having a hollow shape and having a cylindrical shape to support the upright state of the support spring and guide the movement of the blade clamp.

In addition, a pressing protrusion for pressing the blade toward the blade holder may be provided around the contact surface of the blade clamp, which is in contact with the blade.

Further, a separate elastic spring may be provided between the end of the blade clamp and the inner bottom surface of the clamp pusher to prevent the flow of the blade clamp coupled to the clamp tank.

INDUSTRIAL APPLICABILITY According to the present invention, the blade of the multi-cutter can be quickly and easily attached and detached, thereby improving the user's convenience.

1 is a perspective view showing a multi-cutter blade detachment / attachment structure according to an embodiment of the present invention,
FIG. 2 is a longitudinal sectional view showing the multi-cutter blade detachment / attachment structure of FIG. 1,
Fig. 3 is an operation diagram showing an operation of attaching and detaching a blade to the multi-cutter of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a multi-cutter blade detachment / attachment structure according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing the multi- And Fig.

As shown in these drawings, the multi-cutter blade detachable structure according to an embodiment of the present invention includes a spindle housing 100 having a predetermined internal space and having a bottom opening and a through hole 110 formed on an upper surface thereof; A part of which is projected to the outside of the spindle housing 100 through the through hole 110 and is movable in the height direction of the spindle housing 100 and is disposed inside the spindle housing 100, A clamp pusher 200 having a tub 210 therein; A clamp which is provided on the upper side of the clamp pusher 200 so as to move up and down the clamp pusher 200 along the height direction of the spindle housing 100 and selectively contacts the upper surface of the clamp pusher 200 while eccentrically rotating, A cam (300); A blade 400 provided on a lower surface of the spindle housing 100 to cut the object to be cut; The blade 400 is coupled to the lower side of the spindle housing 100 by being fastened to the clamp trough 210 and moves together with the clamp pusher 200 when the clamp pusher 200 is moved, 400) to the spindle housing (100) side; And a support spring 700 installed inside the spindle housing 100 to elastically support the clamp pusher 200 and the lower surface of the clamp tank 210 upward in the height direction of the spindle housing 100 .

The spindle housing 100 is a cylindrical member having a predetermined inner space and formed with an opening and a through hole 110 penetrating a plate surface in a central region of the upper surface, And various parts for detachably attaching to the lower surface of the spindle housing 100 are provided.

The clamp pusher 200 includes a cylindrical member having an opening on the lower surface and an outer diameter similar to the inner diameter of the spindle housing 100 and a cylindrical member having a predetermined length extending from the upper surface of the cylindrical member and partially extending to the clamp pusher 200 And a cylindrical member protruding from the clamp pusher 200 through the through-hole 110 formed therein.

The cylindrical member is disposed movably in the inner space of the clamp pusher 200 along the height direction of the clamp pusher 200. The cylindrical member moves along the height direction of the clamp pusher 200, It comes in and out inside and out.

The clamp member 210 is provided with a screw thread 210 formed on the inner surface of the cylindrical member so that the end of the blade clamp 500 and the clamp member 210 are screwed to each other so that the blade 400 is fixed to the lower surface of the spindle housing 100 It can be fastened.

Since the lower surface of the clamp tank 210 is movable in the height direction within the cylindrical member and the lower surface of the clamp tank 210 is elastically supported by the support spring 700, when the clamp pusher 200 moves upward, The blade clamp 500 coupled to the clamp 210 moves upward and presses the blade 400 provided on the lower surface of the spindle housing 100. As a result,

The clamp cam 300 is disposed on the upper side of the clamp pusher 200 so as to be eccentrically rotatable to selectively move the upper region of the clamp pusher 200 to the inside and the outside of the through hole 110.

In order to allow the clamp cam 300 to eccentrically rotate, the center of rotation of the clamp cam 300 is disposed in a state of being offset to one side, and the difference in distance from the center of rotation to the side of the clamp cam 300, The distance through which the through-hole 110 is drawn out is the same.

The blade 400 cuts an object to be cut by rotating the blade 400 and is formed into a ring shape so that the blade 400 is inserted into the blade clamp 500 at one end so as to be fastened to the lower surface of the spindle housing 100 And the other end extends in a bar shape by a predetermined length, and one side of the sheet surface is bent.

 A blade holder 600 having a plurality of fastening protrusions 610 protruded therearound is coupled to a bottom surface of the spindle housing 100 and a plurality of fastening protrusions 510 are fastened to the plate surface of the blade 400 And a fastening hole 410 is formed through the through hole.

The blades 400 are firmly fixed to the lower surface of the spindle housing 100 by the engagement of the plurality of fastening protrusions 510 with the fastening holes 410 so that the spindle housing 100 does not rotate as the spindle housing 100 rotates, .

The blade clamp 500 is a bolt-shaped member having a thread formed on an outer surface of an end portion thereof and screwed to the clamping jaw 210 so that the blade 400 is fastened to the lower surface of the spindle housing 100.

A pressing protrusion 510 for pressing the blade 400 toward the blade holder 600 is provided around the contact surface of the blade clamp 500 contacting the blade 400 so that the blade 400 is positioned on the lower surface of the spindle housing 100 Make sure to tighten firmly.

A support spring 700 is provided between the lower surface of the clamp pusher 200 and the blade holder 600 to restore the clamp pusher 200 to its original position after the clamp pusher 200 has moved.

The support spring 700 moves the clamp pusher 200 downward along the height direction of the spindle housing 100 by the rotation of the clamp cam 300 to release the blade clamp 500 in the clamp tank 210, 400 and then returning the clamp cam 300 to its original position, the clamp pusher 200 is moved upward and restored to its original position.

When the clamp pusher 200 supports the upright state of the support spring 700 when the clamp pusher 200 is moved up and down by the rotation of the clamp cam 300 and the support spring 700 It is preferable that a clamp guide 800 having a hollow and formed in a cylindrical shape is provided.

A disk member formed in a disk shape is provided around the lower surface of the clamp guide 800 so that the clamp guide 800 is seated on the upper surface of the clamp holder 600. The height of the clamp guide 800 is larger than the height of the upper surface of the clamp holder 800 And a height equal to the distance from the clasp tank 210 to the clasp tank 210.

A separate elastic spring 900 is provided between the end of the blade clamp 500 and the inner bottom surface of the clamp pusher 200 to prevent the flow of the blade clamp 500 fastened to the clamp tank 210.

The elastic spring 900 is inserted into the clamp tank 210 to prevent the blade clamp 500 from flowing due to a gap between the thread formed at the end of the blade clamp 500 and the thread formed at the inner surface of the clamp tank 210, And presses the blade clamp 500 fastened thereto.

A method of detaching and attaching the blade using the multi-cutter blade detachment / attachment structure according to an embodiment of the present invention having such a configuration is as follows.

3 (a), in a state in which the blade 400 is attached, the side surface of the clamp cam 300 disposed at the shortest distance from the center of rotation of the clamp cam 300 is inserted into the through hole 210 are separated from the upper surface of the clamp pusher 200 protruding to the outside by a predetermined distance.

In this state, since the clamp pusher 200 and the lower surface of the clamp tank 210 are resiliently supported by the support springs 700 simultaneously by the support springs 700 provided in the spindle housing 100, The blade clamp 500 fastened to the spindle housing 210 moves upward and presses the blade 400 provided on the lower surface of the spindle housing 100 to keep the blade 400 firmly fastened.

3 (b), in order to replace the blade 400 with a new blade after detaching the blade 400, the clamp cam 300 is rotated so that the clamp disposed at the longest distance from the center of rotation of the clamp cam 300 So that the side surface of the cam 300 presses the upper surface of the clamp pusher 200.

The clamp pusher 200 pressed by the clamp cam 300 is moved downward along the height direction of the spindle housing 100 so that the blade clamp 500 fastened to the clamp tank 410 is moved downward along the height direction of the spindle housing 100, And is separated from the lower surface of the housing 600 by a predetermined distance.

In this state, the blade 400 is released from the lower surface of the blade holder 600 by unscrewing the blade clamp 500 in the clamping tank 410, and after the blade 400 is inserted into the blade clamp 500 to be replaced, The clamping hole 410 formed in the blade holder 600 is inserted into the clamping protrusion 610 provided on the lower surface of the blade holder 600 and the end of the blade clamp 500 is fastened to the clamping clamp 410.

Thereafter, when the clamp cam 300 is rotated so that the side surface of the clamp cam 300 disposed at the shortest distance from the center of rotation of the clamp cam 300 is disposed on the upper side of the clamp pusher 200, The clamp pusher 200 and the clamp tank 410 are moved upward and the blade clamp 500 is moved upward to press the blade 400 to complete the replacement of the blade.

The multi-cover blade detachable structure according to an embodiment of the present invention having such a configuration can quickly and easily attach and detach the blades of the multi-cutter, thereby improving the user's convenience.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100: spindle housing 110: through-hole
200: clamp pusher 210: clamp clamp
300: clamp cam 400: blade
410: fastening groove 500: blade clamp
510: pressing projection 600: blade holder
610: fastening protrusion 700: support spring
800: clamp guide 900: elastic spring

Claims (5)

A spindle housing 100 having a predetermined internal space and having a bottom surface and a through hole 110 formed on an upper surface thereof;
A part of which is projected to the outside of the spindle housing 100 through the through hole 110 and is movable in the height direction of the spindle housing 100 and is disposed inside the spindle housing 100, A clamp pusher 200 having a tub 210 therein;
A clamp which is provided on the upper side of the clamp pusher 200 so as to move up and down the clamp pusher 200 along the height direction of the spindle housing 100 and selectively contacts the upper surface of the clamp pusher 200 while eccentrically rotating, A cam (300);
A blade 400 provided on a lower surface of the spindle housing 100 to cut the object to be cut;
The blade 400 is coupled to the lower side of the spindle housing 100 by being coupled to the clamp tank 210 so that the blade 400 moves together with the clamp pusher 200 when the clamp pusher 200 is moved, 400) to the spindle housing (100) side;
A support spring 700 installed inside the spindle housing 100 to elastically support the clamp pusher 200 and the lower surface of the clamp tank 210 upward along the height direction of the spindle housing 100;
Wherein the multi-cutter blade attachment / detachment structure includes: The method according to claim 1,
A blade holder 600 having a plurality of fastening protrusions 610 protruded therearound is coupled to a lower surface of the spindle housing 100 and a plurality of fastening protrusions 610 fastened to the plate surface of the blade 400 And a fastening hole (410) of the fastening hole (410) is formed through the fastening hole (410). 3. The method of claim 2,
A clamp guide 800 is provided on the inner surface of the support spring 700 and formed in a cylindrical shape to support the upright state of the support spring 700 and to guide the movement of the blade clamp 500, Wherein the multi-cutter blade attachment / detachment structure comprises: 3. The method of claim 2,
And a pressing protrusion (510) for pressing the blade (400) toward the blade holder (600) is provided around a contact surface of the blade clamp (500) in contact with the blade (400) . 5. The method of claim 4,
A separate elastic spring 900 is provided between the end of the blade clamp 500 and the inner bottom surface of the clamp pusher 200 to prevent the flow of the blade clamp 500 fastened to the clamp tank 210 A multi-cutter blade detachable structure.


KR1020150045774A 2015-03-31 2015-03-31 Attaching and detaching structure of multi cutter blade KR20160117873A (en)

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Application Number Priority Date Filing Date Title
KR1020150045774A KR20160117873A (en) 2015-03-31 2015-03-31 Attaching and detaching structure of multi cutter blade

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Application Number Priority Date Filing Date Title
KR1020150045774A KR20160117873A (en) 2015-03-31 2015-03-31 Attaching and detaching structure of multi cutter blade

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109108823A (en) * 2018-10-11 2019-01-01 梯伦豪斯机械（上海）有限公司 Grinding head more changing device and centreless grinding Superfinishing machine equipped with the device
CN112962300A (en) * 2021-02-10 2021-06-15 金恒丰科技集团有限公司 Cutter device and printer
CN114012166A (en) * 2021-11-01 2022-02-08 江苏华宏科技股份有限公司 Sheet material shearing system and saw-tooth-shaped multi-cutter shear thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109108823A (en) * 2018-10-11 2019-01-01 梯伦豪斯机械（上海）有限公司 Grinding head more changing device and centreless grinding Superfinishing machine equipped with the device
CN112962300A (en) * 2021-02-10 2021-06-15 金恒丰科技集团有限公司 Cutter device and printer
CN112962300B (en) * 2021-02-10 2022-04-15 金恒丰科技集团有限公司 Cutter device and printer
CN114012166A (en) * 2021-11-01 2022-02-08 江苏华宏科技股份有限公司 Sheet material shearing system and saw-tooth-shaped multi-cutter shear thereof
CN114012166B (en) * 2021-11-01 2023-03-10 江苏华宏科技股份有限公司 Sheet material shearing system and saw-tooth-shaped multi-cutter shear thereof

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