CN102343461A

CN102343461A - Cutting device

Info

Publication number: CN102343461A
Application number: CN2011101297045A
Authority: CN
Inventors: 基思·帕克
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2012-02-08

Abstract

The invention provides a cutting device which comprises a rotary cutting element, a fixed protective cover and a movable protective cover, wherein the fixed protective cover is partially covered on the cutting element, the movable protective cover can pivot relative to the fixed protective cover and a warning device is arranged on the movable protective cover. According to the invention, the safety, convenience in operation and the like of the cutting device are improved.

Description

Cutter sweep

Technical field

The present invention relates to a kind of cutter sweep and relevant, more specifically, relating to a kind of cutting head can lift the cutter sweep that pivots between a position and the lowering position and relevant with respect to workbench one.

Background technology

Cutting head involved in the present invention can lift the cutter sweep that pivots between a position and the lowering position one with respect to workbench, and common is mitre saw (comprising the composite slide mitre saw), amputating saw etc.Typical mitre saw comprises base, is supported in workbench on the base, is connected in the support arm at turntable rear portion, is pivotally connected to the cutting head of support arm around an axis perpendicular to this trunnion axis around a trunnion axis around vertical axes rotation.Typical amputating saw comprises a workbench, is pivotally connected to the cutting head at workbench rear portion around an axis.

Existing such cutter sweep all has the leader, and it is bigger to be separated by between its grip portions and the saw blade, and the operator is easy to because of carelessness hand is placed between grip portions and the saw blade, exists by the danger of accidental cuts.

This cutter sweep also comprises the movable shield that links to each other with secure shroud usually; When cutting head is switched to lowering position from lifting the position; Movable shield is opened the cutting part that exposes saw blade gradually, lifts the position when cutting head returns back to from lowering position, and movable shield is closed gradually thereupon.In cutting operation, when movable shield is opened, the saw blade cutting part is exposed in the scope that the operator can contact rotatably at a high speed, has potential safety problem.

Summary of the invention

The invention provides a kind of improved cutter sweep, improved security, operation convenience of cutter sweep etc.

For realizing above-mentioned purpose, the invention provides a kind of cutter sweep, comprise:

One rotation cutting element,

Cover the secure shroud of said cutting element partially,

One can be said relatively the movable shield that pivots of secure shroud,

Said movable shield is provided with alarming device.

More characteristics of the present invention and advantage will be set forth hereinafter in detail.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further elaboration.

Fig. 1 is a stereogram of cutter sweep of the present invention.

Fig. 2 is the stereogram of another angle of cutter sweep among Fig. 1.

Fig. 3 is the cutting head of cutter sweep of the present invention is in closure state in movable shield a side view.

Fig. 4 is the side view that cutting head is in open mode among Fig. 3 in movable shield.

Fig. 5 is the side view that cutter sweep of the present invention is provided with clamping device;

Fig. 6 is the side view of its deposit position when being in storage configuration after clamping device is finished using among Fig. 5;

Fig. 7 be among Fig. 5 clamping device when being used for the thick workpiece of clamping, the side view of the maximum height that the relative supporting surface of its top possibly stretch out;

Fig. 8 be among Fig. 5 clamping device when being used for the thin workpiece of clamping, the side view of the minimum constructive height that the relative supporting surface of its top possibly stretch out;

Fig. 9 is the stereogram that cutter sweep of the present invention is provided with supplemental support, and the wherein not shown cutter unit that comprises cutting head only shows the support unit part;

Figure 10 is the stereogram of the supplemental support among Fig. 9;

Figure 11 is in the stereogram under the another kind of occupation mode after the positive and negative upset of the supplemental support among Figure 10.

The specific embodiment

Be the present invention of example accompanying drawings with the composite slide mitre saw below.

As depicted in figs. 1 and 2; Composite slide mitre saw 1 comprises the support unit 20 that is used to support workpiece to be cut and workpiece is carried out the cutting head 10 of cutting processing; Wherein support unit comprises base and is connected in the workbench of base rotationally around vertical axis; Cutting head 10 is connected on the slide assemblies around first axle 11 pivotly, and this slide assemblies is connected in base through a support arm.

Cutting head 10 comprise one around second axis 13 rotation that is parallel to first axle 11 be installed on a saw blade axis saw blade 12, cover the secure shroud 14 of saw blade 12 the first half.First-selected ground, power set are installed on the cutting head, and link to each other with saw blade axis through suitable transmission mechanism, and the power source first-selection of power set is motor or small gasoline engine etc.

Leader 30 is arranged on the secure shroud 14, can be installed on the secure shroud or and secure shroud integrally formed.Handle 30 comprises grip portions 301, two coupling parts 302 that are positioned at the anterior top of secure shroud.First end of coupling part 302 is connected with the rear portion of secure shroud 14, and its second end is connected respectively with grip portions 301 two ends.The two ends of one safe jube 303 respectively and first end of coupling part 302 and the mid portion between second end link to each other, and more near second end of coupling part.Like this, stand in as the operator on the operating position in mitre saw the place ahead, contact secure shroud 14 and must walk around safe jube 303, therefore safe jube 303 is set can prevent effectively that staff from can touch secure shroud 14 because of carelessness under the situation of chance.

Further, handle 30 also comprises an auxiliary coupling part 304, is connected between secure shroud front portion and the grip portions, to increase handle intensity.

Fig. 3 and Fig. 4 show the sketch map that cutting head partly is provided with alarming device; The cast-cutting saw slice 12 outer secure shroud 14 and the following movable shield 15 of being provided with of rotation; Following movable shield 15 goes up secure shroud 14 relatively and swings back and forth pivotly; When carrying out cutting operation; Along with cutting head 10 descends gradually and cuts in the process of workpiece; Following movable shield 15 can be opened gradually; Thereby expose the cutting zone 19 of saw blade 12; After cutting operation is accomplished; Along with lifting of cutting head 12; Following movable shield 15 can be pivoted to closed state automatically along the direction shown in the curved arrow 16; Yet movable shield 15 is not closed fully as yet instantly; Saw blade 12 still when rotated; If it is breakneck that mistake touches saw blade 12; For avoiding accident, the caution operator takes place; The present invention is being provided with alarming device 17 on the movable shield 15 down; Preferably; This alarming device 17 is the easy visuality of discerning of human eye; As warn color; The caution symbol; Any of caution literal or warning lamp etc. or combination in any, caution color choosing wavelength is suitable for the redness of human eye identification; Special; On the caution position 18 of the cutting zone 19 that the movable shield 15 of being located at this alarming device 17 down exposes near saw blades 12; Because rotating saw blade 12 contracts in movable shield 15 or from movable shield 15, comes out all is at first through this caution position 18; Therefore alarming device 17 is located on this caution position 18, the caution effect is obviously directly perceived.

Fig. 5 to Fig. 8 shows the sketch map that mitre saw is provided with work holder; The support unit 20 of the certificate 1 of cutting sth. askew also comprises by grid 50; Lean on grid 50 to have the abutment face 51 vertical with supporting bable tops 21; In workpiece process; Workpiece is placed on the supporting bable tops 21 and its side is resisted against on the abutment face 51; For making workpiece when being cut, more firmly be positioned on the supporting bable tops 21; The present invention provides a kind of work holder 40; Further, this clamping device 40 relatively the supporting surface 21 of support unit 20 be installed in up or down on the support unit 20.

Clamping device 40 mainly comprise the clamping element 41 that acts on the workpiece pressing upper surface, be used to be connected to the connector 42 of support unit 20 and place clamping element 41 and connector 42 between crossbeam 43; Connector 42 has an axis 423 perpendicular to supporting bable tops 21; Connector 42 has maximum projecting position and minimum extended position along the direction of axis 423; On maximum projecting position; It is last that the upper end 422 of connector is in relative supporting bable tops 21 distance farthest; Otherwise; On minimum extended position; It is last that the upper end 422 of connector is in the nearest distance of relative supporting bable tops 21; Connector 42 can slide between maximum projecting position and minimum extended position; Simultaneously; Be used to the guide (not shown) that provides connector 42 to slide thereon cutting sth. askew to be provided with according to 1 support unit 20; Crossbeam 43 has first end and second end; Its first end is connected in the upper end 422 of connector rotationally; Its second end holder 41 that is threaded, holder 41 lower ends are provided with the press keeping section 411 of cup-shaped or plate-like.

Clamping device 40 also comprises makes connector 42 be locked in the locking device of guide; Connector 41 is a bar; Guide is made as the hole that said bar can pass within it; What this hole can be located at support unit 20 leans on grid 50 or/and on the base; The hook-shaped sticking department that the body of rod of connector 42 is provided with circumferential groove 421, one locking pieces 44 is fitted in the cannelure 421 and locks.

But the workpiece of clamping device 40 clamping different-thickness; And because its connector 42 and clamping element 41 are all adjustable on perpendicular to the direction of supporting bable tops 21; Adjustable extent is big; As shown in Figure 7; For clamping device 40 when being used for the thick workpiece of clamping; The possible maximum of the relative supporting bable tops of its top is stretched out height, and at this moment, connector 42 is on the maximum projecting position; As shown in Figure 8, clamping device 40 is when being used for the thin workpiece of clamping, and the possible minimum of the relative supporting surface of its top is stretched out height, and at this moment, the bottom side of crossbeam 43 is leaned on the upper end of grid 50 to prop up.Compare with prior art; Clamping device 40 of the present invention is provided with deposit position; Therefore accomplish the back or when carrying out the inclined-plane cutting (when the inclined-plane cuts at cutting operation; The relative supporting bable tops of cutter unit with cutting head tilts; If this moment, clamping device still had the very high position that protrudes in table top then thereby the inclined degree that is prone to hinder cutter unit can not be accomplished correct cutting operation; Even have an accident) need not it is taken off from cutter sweep; Thereby do not exist the phenomenon that might can not find when reusing to take place; It deposits process referring to Fig. 5 and Fig. 6; At first; Make clamping element 41 cross the top by grid 50; And make it to forward on the position that places by the rear of grid 50; Then, connector 42 downward straightenings are on the minimum extended position to it, accomplish the process of depositing.

Extremely shown in Figure 11 like Fig. 9; Mitre saw 1 also is provided with supplemental support 60; Supplemental support 60 is arranged on the left end of the base of support unit 20 movably; Can move in the primary importance that engages with the base left end and between along the direction shown in the arrow labeled D away from the second place of said left end; Former and later two slide bars 64 of bracing or strutting arrangement 60 fit in the hole on the base and can be locked by locking device; Wherein, locking device is a prior art, and the present invention does not set forth it in detail.The table top 61 of supplemental support 60 is concordant with the supporting bable tops 21 of support unit 20; Supplemental support 60 also is provided with a stop device; Be specially adapted to the workpiece of batch machining fixed length, after workpiece is placed on supporting bable tops 21, only need left end with workpiece be resisted against to place on the precalculated position on the stop device.Stop device comprises stop part 62; Stop part 62 adapts in the groove 66 that is located on the tall auxiliary mesa 61 slidably; Stop part 62 has vertical with table top against the plane; The part with workpiece one end butt that protrudes on the table top against the plane is defined as positive stop end; Certainly; Under the occasion that does not need stop device; This positive stop end also can place under the table top; The other end of relative limit end is provided with adjustable roller 65 on the stop part 62; Stop device 60 also comprises and is used for stop part 62 is locked in a certain locational locking piece 63, and a certain position may be interpreted as maximum position and the positive stop end that positive stop end protrudes on the table top and is lower than the arbitrary position between the position under the table top.

Supplemental support 60 dismountable being arranged on the base; When cutting very long workpiece; Referring to Figure 11; Supplemental support 60 can be pulled down and place apart from the farther position of base left end and make its upset; At this moment; The main part of supplemental support and slide bar form the firm support that is triangular shape, and an end of workpiece is supported on the roller, and roller helps the feeding of workpiece.

Stop part 62 of the present invention is not limited to shape and the mounting means in the above-mentioned embodiment; In other embodiments; As long as this stop part 62 have perpendicular to table top and selectively place the stop end that protrudes in table top and be lower than the position of table top; Such as; Stop part 62 is connected in the side of supplemental support rotationally, when it plays the backstop effect when needs, its stop end is rotated to the position that protrudes on the table top; Otherwise, make to stop end to be positioned under the table top.

Supplemental support of the present invention is not limited to place in the above-mentioned embodiment situation of base left end; In other embodiments; Supplemental support also can be located at the right-hand member of base, and perhaps the right ends at base is respectively equipped with described supplemental support, determines according to behaviour in service.

Claims

1. cutter sweep comprises:

One rotation cutting element,

Cover the secure shroud of said cutting element partially,

One can be said relatively the movable shield that pivots of secure shroud,

It is characterized in that: said movable shield is provided with alarming device.

2. cutter sweep according to claim 1 is characterized in that: said alarming device is located at said movable shield near on the position of said cutting element exposed parts.

3. cutter sweep according to claim 2 is characterized in that: said alarming device is visual device.

4. cutter sweep according to claim 3 is characterized in that: said alarming device is each or combination in any of caution color, caution character, caution literal or warning lamp.

5. cutter sweep according to claim 4 is characterized in that: said caution color is for red.