CN1443884A

CN1443884A - Core yam end-piecing method, splicer and automatic winding frame with end-piecing device for core yarn

Info

Publication number: CN1443884A
Application number: CN 03120185
Authority: CN
Inventors: 坂元直孝
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2002-03-13
Filing date: 2003-03-12
Publication date: 2003-09-24
Anticipated expiration: 2023-03-12
Also published as: EP1344739B1; DE60310630D1; DE60310630T2; EP1344739A2; JP3838354B2; CN100352984C; EP1344739A3; JP2003267632A

Abstract

The present invention provides a method of splicing two core yarns so that inner layer fibers and outer layer fibers are substantially continuous at their spliced portion. The present invention also provides a spliced portion formed by this method and an automatic winder comprising a device that embodies this method. Compressed air is applied to two core yarns 1A, 1B to untwist their outer layer fibers 11a, 11b. The core yarns 1A, 1B are then cut to form core yarn end surfaces 1a, 1b. The core yarn end surfaces 1a, 1b are then abutted against each other. Subsequently, an adhesive is applied to the abutted portion and then left set. Further, the inner layer fibers 10a, 10b and the outer layer fibers 11a, 11b are substantially continuous at the spliced portion of the core yarns.

Description

A core wire connection method, joint and have the core silk with the automatic bobbin winder of piecing devices

Technical field

The present invention relates to the jointing method of core silk, utilize the joint of the core silk of this jointing method formation, and the automatic bobbin winder that has core silk usefulness piecing devices that this jointing method is specific.

Background technology

Core silk (core yarn), be for example with elastic filament such as Si Pandekesi (polyurethane fiber) fibers as inner fiber (below be referred to as heart yearn), as outer layer fiber (below be referred to as envelope core silk) and form, the retractility of existing Si Pandekesi fiber has the feel of natural fabric again simultaneously with anti-diminishing line such as wool fibre or cotton fiber.As the jointing method of this core silk, described in the back mode is practicability.

At first, the mode of the knotting that mechanically connects each other of the end that two core silks that will separate because of cut-out are arranged.Utilize this mode, the intensity height of joint, and can be applicable to bigger yam count always, but, the joint of connected core silk is the outstanding state of pimple shape, so, when being used for fabric and braided fabric, exist the problem that this pimple shape protuberance can not be pressed into the rear side of fabric.

Secondly, after the sth. made by twisting of the end of two core silks that also useful compressed air will separate is untied, with the end coincidence of each core silk, and then by compressed air stream being affacted on this intersection the air splicing mode that moment connects two core silks.According to this mode, the outstanding state of the joint as the knotting mode not, but not connecting the heart yearn of retractility, the part of splicing does not have retractility.In addition, the end of core silk can fly out, constitute the yarn defect from the envelope heart yearn.

Summary of the invention

Therefore, the purpose of this invention is to provide a kind ofly heart yearn and envelope both sides can be engaged, blank area can keep retractility a core wire connection method, utilize joint that this jointing method forms and the automatic bobbin winder that has the concrete device that this jointing method is specialized.

The jointing method of core silk of the present invention, it is characterized by, the core silk is made of inner fiber with retractility and the outer layer fiber with shrink resistance, produce on the end of two aforementioned core silks that shrink in the shrinkage that makes outer layer fiber because of inner fiber by cut-out, along the directive effect compressed air stream that elongates this core silk, the perhaps external force of rotating member of beating machine and so on etc., the contraction of aforementioned outer layer fiber is elongated, make outer layer fiber return to original state, the outer layer fiber of backtwisting is cut off, dock each other the end of the core silk that will form by this cut-out, on this butted part after the adhesive stripe-coating, with this adhesive cures.

Preferably, aforementioned binding agent has the curable of solidifying under the irradiation of light, and aforementioned lights can be ultraviolet ray, and aforementioned lights is a laser beam.

Core wire connection head of the present invention, it is characterized by, in the core silk that constitutes by inner fiber with retractility and outer layer fiber with shrink resistance, the end of two core silks is docked each other, utilize binding agent that this butted part is engaged, on this bonding part, aforementioned inner fiber and outer layer fiber come down to continuous.

The automatic bobbin winder that has the core silk with piecing devices of the present invention, it is characterized by, it is equipped with core silk piecing devices, in the core silk that constitutes by inner fiber with retractility and outer layer fiber with shrink resistance, produce on the end of two aforementioned core silks that shrink in the shrinkage that makes outer layer fiber because of inner fiber by cut-out, along the directive effect compressed air stream that elongates this core silk, the contraction of aforementioned outer layer fiber is elongated, make outer layer fiber return to original state, the outer layer fiber of backtwisting is cut off, dock each other the end of the core silk that will form by this cut-out, on this butted part after the adhesive stripe-coating, with this adhesive cures, realize engaging.

Preferably, aforementioned core silk comprises with piecing devices: a pair of clamping component that control two core silks respectively, can move mutually; Form a pair of first cutting element that the end of the core silk that described each clamping component controls is used, make air flow affact a pair of nozzle on the end of described core silk; After the end cut-out with aforementioned core silk, make aforementioned each clamping component approaching, so that a pair of second cutting element that the mode that dock each other the end of aforementioned each core silk is cut off; On described butted part, apply the resin organization of supply of the binding agent that constitutes by light-cured resin; Coated light-cured resin is solidified the light irradiating means of usefulness.The aforementioned lights irradiation means is made of semiconductor laser.

Description of drawings

Fig. 1, be the key diagram of an expression core wire connection method.

Fig. 2, be the then key diagram of Fig. 1.

Fig. 3, be expression and scheme corresponding further explanatory drawings.

Fig. 4, be the key diagram of the joint of core silk.

Fig. 5, be to have the key diagram of core wire connection head with the joint sequence of movement of the automatic bobbin winder of device.

Fig. 6, be the then key diagram of Fig. 5.

Fig. 7, be the then key diagram of Fig. 6.

Fig. 8, be the then key diagram of Fig. 7.

Fig. 9, be the key diagram of expression core silk with the joint sequence of movement of piecing devices.

Figure 10, be the then key diagram of Fig. 9.

Figure 11, be the then key diagram of Figure 10.

Figure 12, be the then key diagram of Figure 11.

Figure 13, be the then key diagram of Figure 12.

Figure 14, be the then key diagram of Figure 13.

Figure 15, be the then key diagram of Figure 14.

Figure 16, be the key diagram of the expression core silk corresponding with second embodiment of joint usefulness device with Figure 15.

The specific embodiment

Below, the jointing method of the core silk that present invention will be described in detail with reference to the accompanying, utilize the joint of the core silk that this jointing method forms and have core silk that this jointing method is specialized automatic bobbin winder with piecing devices.

The jointing method of core silk at first, is described based on Fig. 1 and Fig. 2.Fig. 1 and Fig. 2 are the key diagrams of this jointing method of expression.In Figure 1A, but control respectively as a pair of core silk 1A, the 1B that will carry out joint, give compressed air stream along the axial direction (elongating the direction of loose thread) of each

core silk

1A, 1B with a pair of nozzle 50,51 with freely openable, mobile clamper 30,31.At this moment, the direction of first cutter of describing rearwards 40,41 is given compressed air (direction of arrow that contracts shown in the figure).Then, in Figure 1B, make the effect of compressed air stream by one side, one side makes a pair of first cutter 40,41 move with respect to the direction perpendicular to the axial direction of each

core silk

1A, 1B each

core silk

1A, 1B is cut off, and forms the end of each core silk 1A, 1B.Then, in Fig. 1 C, in the action of ending nozzle 50,51, by near be positioned at the clamper 30,31 a pair of second cutter 60,61 is moved to the direction perpendicular to the axial direction of each

core silk

1A, 1B,

core silk

1A, 1B are cut off, on each

core silk

1A, 1B, form core

silk end face

1a, 1b.

And then, in Fig. 2 A, the binding agent 2 that dipping is made of uv curing resin on each core

silk end face

1a, 1b, then, in Fig. 2 b, by

mobile clamper

30,31, each core

silk end face

1a, 1b are docked each other, the binding agent that utilizes surface tension will be immersed on each core

silk end face

1a, 1b is integrated, then, and in Fig. 2 C, under the state that each core

silk end face

1a, 1b are docked each other, irradiation solidifies binding agent 2 from the ultraviolet ray of ultraviolet lamp 70, forms joint.After forming joint,

open clamper

30,31, utilize drive unit (omitting among the figure) to transport the core silk.

In addition, the coating of binding agent 2 shown in Fig. 2 B, also can be coated to the position of butt joint under the state that each core

silk end face

1a, 1b are docked each other.In addition, also can with the action interlock of second cutter 60,61 among Fig. 1 C, adhesive stripe-coating 2 in cutting-off process or on core silk end face 1a, the 1b after just having cut off.

In addition, under the situation of the binding agent 2 that coating is made of heat-curing resin, replace aforementioned ultraviolet lamp 70, also can use the Halogen lamp LED of irradiation heat ray, perhaps form a pair of hot plate of half slot, carry out the curing of heat-curing resin by the crimping inner surface.In addition, under the situation of using the binding agent 2 that is made of light-cured resin, also can replace ultraviolet lamp 70, use semiconductor laser, irradiating laser light makes adhesive cures on butted part.

And then, describe aforementioned jointing method in detail based on Fig. 3.Fig. 3 is corresponding with Fig. 1, is the key diagram of representing core silk 1A enlargedly.Fig. 3 A is corresponding to Figure 1A, under this state, as heart yearn 10a outer field envelope 11a reel with certain interval L1.Then, Fig. 3 B1 and B2 are corresponding to Figure 1B, Fig. 3 B1 is the state before expression gives compressed air, Fig. 3 B2 is that expression gives compressed air state afterwards, shown in Fig. 3 B1, do not giving under the compressed-air actuated state, by utilizing first cutter 40 that core silk 1A is cut off, heart yearn 10a is along with the coiling of the shrinkage envelope 11a of heart yearn 10a shortens to distance L 2 at interval, and then, shown in Fig. 3 B2, by giving compressed air to the direction of arrow (elongating the direction of loose thread), the coiling of envelope 11a turns back to the distance L 1 shown in Fig. 3 A at interval.Then, Fig. 3 C is corresponding to Fig. 1 C, and by cutting off core silk 1A with second cutter 60, at the state that forms the shrinkage recovery of elongating outer layer fiber, promptly the coiling of envelope 11a distance is the state of L1, can form core silk end face 1a.In addition, in the present embodiment, enumerated as the example that is used for the external force of outer layer fiber backtwisting is used compressed air stream, but also can use other mechanical means, for example, the tabular component that will rub contacts with the loose thread surface, perhaps rotating member is affacted the first-class means in loose thread surface.

Secondly, the joint of the core silk that utilizes above-mentioned jointing method formation is described based on Fig. 4.Fig. 4 is the key diagram of the joint of expression core silk.

Articulate core silk

1A, 1B, the nonoverlapping butt joint of

end face

1a, 1b by each core silk utilizes binding agent 2 to be engaged securely.Each core

silk end face

1a, 1b are at the state butt joint of cutting off, the twisted continuous state that is in basically at each

core silk

1A, 1B place in addition.

And then, based on Fig. 5 to Figure 16, illustrate to have the automatic bobbin winder that the core silk that aforementioned jointing method is specialized is used piecing devices.Fig. 5 to Fig. 8 is the side view of expression automatic bobbin winder, and Fig. 9 to Figure 16 is the front view of the core silk of expression automatic bobbin winder outfit with piecing devices, is the key diagram of the action when two core silks are carried out joint.

Automatic bobbin winder shown in Figure 5 has the core silk with piecing devices (below be referred to as piecing devices) in central authorities, have be positioned at the below feed a silk bobbin B, the coiling packing P that is positioned at the top is wound up on the coiling packing P of rotation from the core silk YP that feeds silk bobbin B supply.Feed the core silk YP of silk from feeding the silk bobbin,, give core silk YP suitable tension force,, the core YP of specific thickness is wound up on the packing P that reels via the cylinder D that traverses of rotation by tensioner T via thread-carrier G.Simultaneously, in order defective part not to be wound up on this coiling packing P, detect thickness by the core silk YP of checkout gear F always.

Follow Fig. 5, in Fig. 6, when the packing P coiling of reeling was fed the core silk YP of silk from feeding a bobbin B, checkout gear F and predefined core filament diameter compared, and detect the yarn defect of the core YP that is passed through.And, when this checkout gear F detects the yarn defect, when being arranged on cutter (omitting among the figure) on the checkout gear F and cutting off core silk YP, the rotation of packing P stops to reel, in order to supspend coiling, be wound under the state of packing on the P at last core silk Y1, following core silk Y2 is in the state that attracted on yarn suction inlet (yarn trap) W that is positioned at thread-carrier G upside.

Follow Fig. 6, in Fig. 7, under the state of Fig. 6, last yarn is that the center turns clockwise with the above axle of a suction arm S1 D1, and following yarn is that the center is rotated counterclockwise with suction arm S2 with lower shaft D2.Each aspirates arm S1, S2, is connected on the inner intake guide KP for the cavity.And KP is air-breathing by intake guide, and each attraction mouth S1a, S2a that aspirates arm S1, S2 attracts to control yarn Y1, reaches yarn Y2 down.

Follow Fig. 7, in Fig. 8, control under the state of yarn Y1 and following yarn Y2 at each suction arm S1, S2, is that the center is rotated counterclockwise to the bottom by last yarn with axle D1 more than the suction arm S1, following yarn is that the center is rotated counterclockwise upwards pendulum with suction arm S2 with lower shaft D2, and yarn Y2 was directed to the position of regulation respectively under last yarn Y1 reached via the front of piecing devices 101.

Below, the situation when piecing devices 101 will be gone up yarn Y1 and be connected with following yarn Y2 is described.Fig. 9 represents the front of piecing devices 101, is having yarn usefulness clamping component 110 and following yarn on the board 101A near member 111, and each clamping component 110,111 is made of

clamper

110a, 111a and the second clamper 110b, 111b.These

clampers

110a, 111a, 110b, 111b normally separate, last yarn will go up with suction arm S1 that yarn will descend yarn Y2 importing to yarn to use each

clamper

111a, 111b of clamping component 111 between to yarn with aspirating arm S2 with between each

clamper

110a, 110b of clamping component 110 yarn Y1 importings in.

Follow Fig. 9, in Figure 10, last yarn Y1 and down yarn Y2 under each

clamper

110a, 110b of each clamping component 110,111, state (state shown in Figure 9) between 111a, the 111b, each the

first clamper

110a, 111a move, the plate face that each

clamper

110a, 111a are had, the plate face contact of each the

second clamper

110b, 111b of subtend is with it controlled yarn Y1 and is reached yarn Y2 down.

Follow Figure 10, in Figure 11, yarn is with first cutting element 220 in configuration below the piecing devices 101, disposes up to yarn with first cutting element 221, and each first cutting element 220,221 is by

fixed blade

220a, 221a and

movable sword

220b, 221b formation.Simultaneously, by moving of each

movable sword

220b, 221b, last yarn cuts off with first cutting element 220 and goes up yarn Y1, and following yarn cuts off yarn Y2 down with first cutting element 221.In addition, last yarn reaches down with nozzle 230, and yarn is located between each clamping component 110,111 and each first cutting element 220,221 with nozzle 231, in the time of with each first cutting element 220,221 action, each nozzle 230,231 is gone up yarn Y1 and following yarn Y2 with compressed air.At this moment, give compressed-air actuated direction and point to each first cutting element 220,221.

As shown in figure 12, between each clamping component 110,111, near on yarn with the configuration of the position of clamping component 110 on yarn with second cutting element 120, yarn is with second cutting element 121 under disposing with the position of clamping component 111 near yarn down.Each second cutting element 120,121 constitutes by fixed blade 120a, 121a and movable sword 120b, 121b, by moving of movable sword 120b, 121b, last yarn will be gone up yarn Y1 with second cutting element 120 and cut off, and following yarn will descend yarn Y2 to cut off with second cutting element 121.At this moment, the last yarn Y1 that each clamping component 110,111 is not controlled reaches yarn Y2 down, attracted to and respectively aspirates on arm S1, the S2, and yarn Y1, the Y2 of defective part goes out of use in the air intake duct KP.

Follow Figure 12, in Figure 13, each clamping component 110,111 of controlling yarn Y1 and following yarn Y2 is approaching mutually, with last yarn Y1 and the section butt joint of yarn Y2 down.

Then Figure 13 in Figure 14, reaches at last yarn Y1 under the state (state of Figure 13) of the cut-out end face butt joint of yarn Y2 down, and the supply opening 131 of resin organization of supply 130 is near these butted parts, from supply opening 131 coating light-cured resins.This resin organization of supply 130 is containers of injection shape, and by main body 132, supply opening 131 and cylinder body 133 constitute.Simultaneously, main body 132 is installed on the pedestal CA that can freely advance and retreat, and inside holds light-cured resin.Simultaneously, under the state of last yarn Y1 and the cut-out end face butt joint of yarn Y2 down, when passing in and out with pedestal CA, the described means for screening 150 in back moves to the top, and the supply opening 131 of resin organization of supply 130 is opened.Then, the supply opening 131 of resin organization of supply 130 reaches the butted part of yarn Y2 down near last yarn Y1, by making cylinder body 133 actions, discharges the light-cured resin of main body 132 inside of ormal weight, and light-cured resin is coated on the butted part.

Then Figure 14 in Figure 15, applies under the state (state of Figure 14) of light-cured resin on the butted part of yarn Y2 under last yarn Y1 reaches, and utilizes light irradiating means 140 irradiation light, and light-cured resin is solidified, and will go up yarn Y1 and following yarn Y2 joint.In this embodiment, light-cured resin is a ultraviolet curable resin, light irradiating means 140 irradiation ultraviolet radiations.During irradiation, pedestal CA returns to original position, and supply opening 131 leaves yarn Y1 and reaches the butted part of yarn Y2 down, meanwhile, because means for screening 150 also turns back to the origin-location, so the plate portion 151 of means for screening 150 covers supply opening 131.Whereby, can prevent the curing of the light-cured resin of supply opening 131, prevent that supply opening 131 from stopping up.In addition,, the viscosity of the light-cured resin in the resin organization of supply 130 can be adjusted, the viscosity of the yam count of the core silk that is suitable for carrying out joint can be adjusted to by near configuration heater (omitting among the figure) resin organization of supply 131.

And then, in the present embodiment, last yarn with clamping component 110 near in the configuration yarn with testing agency 160, yarn down with near the configuration clamping component 111 under yarn testing agency 161, described 160,161 work under state shown in Figure 10.Simultaneously, last yarn is used to detect yarn Y1 with testing agency 160, be used to detect down yarn Y2 to yarn with testing agency 161, do not detect yarn Y1 and under the situation of yarn Y2 in each testing agency 160,161, promptly, control at each clamping component 110,111 under the situation of yarn Y1 and following yarn Y2 failure, end the following action of Figure 11, prevent that supply light cured resin and liquid are sagging in vain.Then, carry out the following action of Fig. 6 once more, repeat this action till the joint success.In joint when success, that is, each testing agency 160,161 detects yarn Y1 and promptly descend yarn Y2, and when carrying out the action up to Figure 15, the packing of reeling P rotates once more, reels from feeding silk bobbin B a next core silk YP, does not have flaw core silk YP partly so always can reel.

Secondly, second embodiment different with first embodiment is described.In addition, omission is to the explanation of the part identical with first embodiment.Figure 16 is the expression piecing devices different with first embodiment, and is corresponding with Figure 15 of first embodiment.The light irradiating means 140 of first embodiment, for example send the diffused light of Halogen lamp LED, light-cured resin is solidified, but in second embodiment, this light irradiating means 140 is that lens are installed to semiconductor laser 140 ' on the semiconductor laser diode, with lens the light that semiconductor laser diode sends is focused on, and sends laser 141, on the butted part that laser 141 is shone yarn Y1 and following yarn Y2, light-cured resin is solidified.In addition, the wavelength region may of semiconductor laser 140 ' is preferably 400～420nm, for example, and the cyan of Ri Ya KCC system or purple semiconductor laser.

Figure 16 under the state (state of Figure 14) of coating light-cured resin on the butted part of each yarn Y1, Y2, shines on the butted part by making the laser 141 that sends from semiconductor laser 140 ', and light-cured resin is solidified, and with each yarn Y1, Y2 engages.Because semiconductor laser 140 ' constitutes compact shape, so, can be with whole piecing devices 101 miniaturizations, in addition, owing to compare with light quantity, the electric power of consumption is low, so its economic performance excellence.And then, in the solid mechanism 140 of the light of first embodiment, because diffused light only, so work as photopolymer resin attached to each yarn Y1, Y2 and each clamping component 110, in the time of on 111, the joint failure, when in second embodiment, because the mode of laser with pinpoint (pinpoint) shone on the butted part, so even light-cured resin is attached to each yarn Y1, Y2 and each clamping component 110, on 111, because laser 141 can not shine each yarn Y1, Y2 and each clamping component 110, on 111 the part that is attached with resin, so, can not cause that the resin solidification that adheres to causes the joint failure.And then, by pinpoint irradiation, compare with first embodiment, the hardness height, in addition, because light-cured resin can instantaneous solidification, so accelerate operating speed, the life-span of light irradiating means also extends.In addition, in the present embodiment, because pinpoint ground shines semiconductor laser 140 ' on blank area, so, do not need as first embodiment, to be provided with means for screening 150, can be with its overall simpleization.

The present invention, as above illustrated, when utilizing above-mentioned adhesive method that two core silks are connected, because can engage heart yearn and envelope, so, retractility also had at blank area, can be under the state of the characteristic of keeping the core silk, together with two core wire connections.And then, owing to utilize adhesive method, so blank area does not become outstanding state, in addition, because joint is short and little, so the variable color when dyeing is partly short, has more inconspicuous advantage.

Claims

1, a kind of jointing method of core silk, it is characterized by, the core silk is made of inner fiber with retractility and the outer layer fiber with shrink resistance, produce on the end of two aforementioned core silks that shrink in the shrinkage that makes outer layer fiber because of inner fiber by cut-out, along the directive effect external force of elongating this core silk, the contraction of aforementioned outer layer fiber is elongated, make outer layer fiber return to original state, the outer layer fiber of backtwisting is cut off, dock each other the end of the core silk that will form by this cut-out, on this butted part after the adhesive stripe-coating, with this adhesive cures.

2, a kind of jointing method of core silk, it is characterized by, the core silk is made of inner fiber with retractility and the outer layer fiber with shrink resistance, produce on the end of two aforementioned core silks that shrink in the shrinkage that makes outer layer fiber because of inner fiber by cut-out, along the directive effect compressed air stream that elongates this core silk, the contraction of aforementioned outer layer fiber is elongated, make outer layer fiber return to original state, the outer layer fiber of backtwisting is cut off, dock each other the end of the core silk that will form by this cut-out, on this butted part after the adhesive stripe-coating, with this adhesive cures.

3, the jointing method of core silk as claimed in claim 1 or 2 is characterized by, and aforementioned binding agent has the curable of solidifying under the irradiation of light.

4, the jointing method of core silk as claimed in claim 3 is characterized by, and aforementioned lights is ultraviolet ray.

5, the jointing method of core silk as claimed in claim 3 is characterized by, and aforementioned lights is a laser beam.

6, a kind of core wire connection head, it is characterized by, in the core silk that constitutes by inner fiber with retractility and outer layer fiber with shrink resistance, the end of two core silks is docked each other, utilize binding agent that this butted part is engaged, on this bonding part, aforementioned inner fiber and outer layer fiber come down to continuous.

7, a kind of automatic bobbin winder that has the core silk with piecing devices, it is characterized by, it is equipped with core silk piecing devices, in the core silk that constitutes by inner fiber with retractility and outer layer fiber with shrink resistance, produce on the end of two aforementioned core silks that shrink in the shrinkage that makes outer layer fiber because of inner fiber by cut-out, along the directive effect external force of elongating this core silk, the contraction of aforementioned outer layer fiber is elongated, make outer layer fiber return to original state, the outer layer fiber of backtwisting is cut off, and dock each other the end of the core silk that will form by this cut-out, on this butted part after the adhesive stripe-coating, with this adhesive cures, realize engaging.

8, winder as claimed in claim 7 is characterized by, and aforementioned core silk comprises with piecing devices: a pair of clamping component that control two core silks respectively, can move mutually; Form a pair of first cutting element that the end of the core silk that described each clamping component controls is used, make air flow affact a pair of nozzle on the end of described core silk; After the end cut-out with aforementioned core silk, make aforementioned each clamping component approaching, so that a pair of second cutting element that the mode that dock each other the end of aforementioned each core silk is cut off; On described butted part, apply the resin organization of supply of the binding agent that constitutes by light-cured resin; Coated light-cured resin is solidified the light irradiating means of usefulness.

9, automatic bobbin winder as claimed in claim 8 is characterized by, and the aforementioned lights irradiation means is made of semiconductor laser.