CN1321587A - Method for making propelling pencil and its writing-core protection component - Google Patents

Abstract

A lead protection member comprising a longitudinal hole formed by removing by laser beams a part of resin filled in the lead protection member, or a resin tube or pipe covered at least on the outer surface thereof with a metal, or a resin tube or pipe formed at least on the outer surface thereof with an electrically conductive film that is further covered with a metal, thereby reducing variations in production. increasing a resistance between the lead protection member and the lead to thereby prevent shaking of a remaining portion of the lead when one is writing. Further, removing part of the resin layer at the tip end of the lead protection member will reduce the wall-thickness of the resin layer to thereby reduce a compression ratio of the resin layer and further reduce shaking of the remaining portion of the lead.

Description

The manufacture method of propelling pencil and lead for retractable pencil guard block thereof

The present invention relates to by being disposed at the propelling pencil that moving forward and backward of lead for retractable pencil delivering mechanism in the penholder send the lead for retractable pencil self-configuring at the lead for retractable pencil guard block of penholder front end and the manufacture method of lead for retractable pencil guard block thereof.

Above-mentioned propelling pencil is described in conjunction with Fig. 1.

This propelling pencil utilizes lead for retractable pencil delivering mechanism 4 that lead for retractable pencil is sent, and this lead for retractable pencil delivering mechanism 4 is made of dops 2 such as three-jaw chuck, ball dop and dop clamping unit 3.When sending lead for retractable pencil, under the state of dop clamping unit 3 with lead for retractable pencil L chucking, the elastic force that makes dop 2 overcome elastomeric element (omitting among the figure) is advanced, after the certain distance that advances, mobile being obstructed of dop clamping unit 3 (card among the figure ends the shoulder 5a of the forepiece 5 on penholder 1), when after this dop 2 moves on, dop 2 will become release conditions, if under this state, separate moving of the dop 2 that disappears, then under the effect of the elastic force of elastomeric element, dop 2 will retreat up to engaging with dop clamping unit 3, and lead for retractable pencil L is subjected to by the maintenance of formed retaining parts S such as rubber it during this period and retreats and be restricted, thereby realize sending of lead for retractable pencil.By repeating to implement This move, lead for retractable pencil L will highlight from the lead for retractable pencil guard block 6 of penholder 1 (forepiece 5) front end.

But when lead for retractable pencil shortened along with writing, dop 2 can not keep lead for retractable pencil again, and lead for retractable pencil will remain in front end from dop 2 to the lead for retractable pencil guard block 6.(below be called " residual core ") L is only kept gently by retaining parts S because this residual lead for retractable pencil, so write the sense variation.Therefore, generally speaking, eject, perhaps wait it is extracted and abandons with finger with residual core or with follow-up lead for retractable pencil.And for the residual core that breaks away from retaining parts S, above-mentioned phenomenon is more obvious, and lead for retractable pencil just can drop out by deadweight sometimes.

For this reason, in order more effectively to utilize this residual core, once improvement project was proposed with regard to the lead for retractable pencil guard block.Known for example have: the stacked integratedly elastic film that is made of rubber etc. on the inner surface of lead for retractable pencil guard block; with the frictional force between this elastic film increase and the lead for retractable pencil; prevent that residual core is because of deadweight drop (real public clear 58-32959 communique); and on the inner surface of lead for retractable pencil guard block, form projection; make this projection clamp the into surface of residual core, prevent that residual core is because of deadweight drop (spy opens clear 56-118898 communique, the spy opens clear 58-203099 communique) etc.

There is variety of issue in the lead for retractable pencil guard block of above-mentioned prior art.

As the former; be to use mould that pressurizations such as the synthetic resin of fusion or rubber are filled; the cooling back forms elastic film on the inner surface of lead for retractable pencil guard block; therefore; exist dispersed at manufacture view; that is, the gap smaller between lead for retractable pencil guard block and the mould sometimes, thus the pressurization that can't carry out the synthetic resin of fusion or rubber etc. is filled.

And use the propelling pencil that has the lead for retractable pencil guard block that is laminated with elastic film integratedly on the above-mentioned inner surface, with residual core when paper etc. is located to write, residual core rocks at the front end of lead for retractable pencil guard block, thereby it is poor to write sense.

This problem results from the elastic force of elastic film that residual core is kept.That is, the inner surface of lead for retractable pencil guard block is formed with elastic film, even when lead for retractable pencil is inserted in wherein; because film keeps its elastic force to drop because of deadweight to prevent lead for retractable pencil; therefore, when writing under the effect of writing pressure elastic film be compressed, the user can feel rocking of lead for retractable pencil.Lead for retractable pencil rocks this problem, even the thickness of lead for retractable pencil guard block leading section that increases elastic film can not be resolved to increase pressure that lead for retractable pencil is kept (below be called " lead for retractable pencil confining force ").

Elastic film is by forming such as resins such as silicone or rubber, though have good chemical-resistant resistance and heat-resisting, cold tolerance, poor to the tolerance of gasoline and nonpolarity organic compound such as toluene, Liquid Paraffin, can absorb these solvents and expand.Contain Liquid Paraffin or mineral oil, animal oil, plant wet goods oils and soak in the lead for retractable pencil of propelling pencil, after the nonpolarity organic compound that is contained in these oil is absorbed by elastic film, to cause that elastic film expands, the lead for retractable pencil confining force increases and causes lead for retractable pencil to send difficulty.

And as the latter, drop owing to make projection embed residual core lead for retractable pencil when preventing to write, therefore, projection can be damaged the surface of lead for retractable pencil, and the intensity that exists very thin lead for retractable pencil significantly reduces this quality problems.

Disclosure of an invention

Task of the present invention is; provide a kind of and do not reduce lead for retractable pencil intensity and can effectively utilize the propelling pencil of residual core, the manufacture method that lead for retractable pencil rocks the lead for retractable pencil guard block of propelling pencil sense, that the lead for retractable pencil confining force does not increase is not provided when also being to provide a kind of manufacturing to write.

For this reason, the present invention creates in view of above-mentioned existing problems, its the 1st purpose provides a kind of like this propelling pencil, promptly, in the propelling pencil of by the lead for retractable pencil guard block that is configured in the penholder front end lead for retractable pencil being sent by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder, aforementioned lead for retractable pencil guard block is to utilize laser beam to remove a part that is filled in the resin in the lead for retractable pencil guard block, form and form the hole in the longitudinal direction, keep lead for retractable pencil lightly by the inner surface in the hole on this length direction; Its 2nd purpose provides a kind of like this propelling pencil, promptly, in the propelling pencil of by the lead for retractable pencil guard block that is configured in the penholder front end lead for retractable pencil being sent by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder, aforementioned lead for retractable pencil guard block is that the outside at least coated metal of bile duct forms in resin, keeps lead for retractable pencil lightly by the inner surface of bile duct in the resin; Its 3rd purpose provides a kind of like this propelling pencil, promptly, in the propelling pencil of by the lead for retractable pencil guard block that is configured in the penholder front end lead for retractable pencil being sent by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder, aforementioned lead for retractable pencil guard block is the outside at least conductive film that forms of bile duct in resin, and coated metal forms on this conductive film, keeps lead for retractable pencil lightly by the inner surface of bile duct in the resin; Its 4th purpose provides a kind of like this propelling pencil, promptly, in penholder, dispose the lead for retractable pencil delivering mechanism, and the lead for retractable pencil guard block that inner surface has resin bed at least is configured in the propelling pencil of penholder front end, it is characterized in that, aforementioned lead for retractable pencil guard block is to make it to take place plastic deformation by apply external force from the outside, makes the leading section inscribed circle diameter less than the rearward end inscribed circle diameter; Its 5th purpose provides a kind of like this manufacture method of lead for retractable pencil guard block; promptly; on the inner surface of lead for retractable pencil guard block, have at least in the manufacture method of lead for retractable pencil guard block of propelling pencil of resin bed; at least include by apply external force from the outside and make lead for retractable pencil guard block front end generation plastic deformation, make the inscribed circle diameter of lead for retractable pencil guard block leading section less than the plastic deformation operation of the inscribed circle diameter of non-variant part.

The present invention is in the lead for retractable pencil guard block of the front end that is disposed at penholder; at least on the inner surface of lead for retractable pencil guard block, dispose the lead for retractable pencil holding member that lead for retractable pencil is kept; thereby can obtain a kind of like this propelling pencil; promptly; when lead for retractable pencil is longer, can bring into play the function same, and under the situation of residual core, can be used effectively with prior art; and, the intensity of lead for retractable pencil is reduced.In addition; a lead for retractable pencil guard block or the part that will be filled in the resin in the lead for retractable pencil guard block are utilized laser beam to remove and are formed the hole in the longitudinal direction and form; or form at the outside at least coated metal of pitch tube; or at the outside at least conductive film that forms of pitch tube; and at this conductive film; last coated metal forms, and therefore, can reduce the possibility that occurs dispersiveness in the production.In addition, the inscribed circle diameter of leading section is diminished, resin bed is compressed and increase and lead for retractable pencil between resistance sense, residual core can not shake, in addition when writing, the resin bed of leading section is removed a part, can make the wall thickness attenuation of resin bed, therefore, the compression ratio of resin bed reduces, and can further eliminate rocking of residual core.In addition, because the leading section of lead for retractable pencil guard block is done narrowlyer, so improved the observability at lead for retractable pencil front end place when writing.In addition, used the resin of oil resistivity excellence in the elastic resin layer,, the increase of lead for retractable pencil confining force can not take place again and cause lead for retractable pencil to send the phenomenon of difficulty so can avoid the elastic resin layer to expand because of absorbing the nonpolarity organic compound that is contained in the lead for retractable pencil.

In addition, bile duct in the said resin means to comprise pitch tube among the present invention.

Fig. 1 is the key diagram of prior art.

Fig. 2 is the longitudinal sectional view of propelling pencil of the present invention.

Fig. 3 is the longitudinal sectional view of the major part of propelling pencil of the present invention.

Fig. 4 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Fig. 5 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Fig. 6 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Fig. 7 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Fig. 8 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Fig. 9 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 10 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 11 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 12 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 13 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 14 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 15 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 16 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 17 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 18 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 19 is the transverse sectional view of lead for retractable pencil guard block of the present invention.

Figure 20 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 21 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 22 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 23 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 24 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 25 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 26 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 27 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 28 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 29 is the longitudinal sectional view of lead for retractable pencil guard block of the present invention.

Figure 30 is the stereogram of lead for retractable pencil guard block of the present invention.

Figure 31 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 32 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 33 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 34 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 35 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 36 be the manufacturing process to lead for retractable pencil guard block of the present invention describe vertically cut view.

Figure 37 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 38 is the longitudinal sectional view that the manufacturing process to lead for retractable pencil guard block of the present invention describes.

Figure 39 is the stereogram of lead for retractable pencil guard block of the present invention.

Embodiment 1

Fig. 2 is an example of the longitudinal sectional view of propelling pencil among the present invention, and Fig. 3 is an example of the longitudinal sectional view of propelling pencil major part.

Among Fig. 2 and 3, Ref. No. 1 is the penholder of propelling pencil, in this penholder 1, dispose the lead for retractable pencil delivering mechanism 4 that constitutes by dop 2 such as three-jaw chuck or ball dop (being three-jaw chuck among the figure) and dop clamping unit 3 (be ring-type among the figure, and under the situation of ball dop, use ball).Ref. No. 5 is the forepieces that are assemblied on the penholder 1, and this forepiece 5 also can be made of one with penholder 1.And forwardly the front end of part 5 is equipped with lead for retractable pencil guard block 6.

Ref. No. 7 is the elastomeric elements such as helical spring that lead for retractable pencil delivering mechanism 4 applied backward the active force of (top among the figure).Therefore, lead for retractable pencil delivering mechanism 4 can move forward and backward along its length.In addition, shown in the figure is to have omitted employed lead for retractable pencil retaining examples of members in the existing propelling pencil, but also can be the same with prior art, at the rear of lead for retractable pencil guard block configuration lead for retractable pencil retaining parts.

More than constitute identical with the basic comprising of existing common rear end push mode propelling pencil.

In addition, the present invention also can be applied in the propelling pencil of front end push mode, rotary lifting formula, sideslip type, middle existing known configurations such as collapsible.

The invention is characterized in the formation and the manufacture method thereof of lead for retractable pencil guard block 6 in the propelling pencil.

In the inside of lead for retractable pencil guard block 6, be formed with the lead for retractable pencil holding member 8 that lead for retractable pencil is kept, owing to be formed with this lead for retractable pencil holding member 8, and self-evident for long lead for retractable pencil, even also can keep for residual core.

The formation method of this lead for retractable pencil guard block 6 is, utilizes laser beam to remove the part of the resin of being filled in the lead for retractable pencil guard block and forms the hole in the longitudinal direction.

As the object lesson of the resin that is used for lead for retractable pencil holding member 8, can use reaction-curable resin, thermohardening type resin and thermoplastic resin.Its object lesson can list: epoxy resin, carbamate resins, the acrylic compounds melamine resin, acrylic compounds-silicones, propylene-carbamate resins, unsaturated polyester resin, alkyd resins, silicones, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral resin, silicon rubber, urethane rubber, ethylene-acrylate rubber, epichlorohydrin rubber, acrylic rubber, EP rubbers, neoprene, natural rubber, isoprene rubber, haloflex, acrylonitrile-butadiene rubber, the phenylethylene elastomer, olefin type elastomer, ester class elastomer, urethanes class elastomer etc.Can also use ultraviolet curing resin; as its object lesson; can use: have the esters of acrylic acid of acryloyl group, the simple function monomer of methyl acrylic ester endways as functional group, or polyester acrylate of multi-functional monomer, optical polymerism prepolymer, epoxy acrylate, urethane acrylate, polyether acrylate, melamine acrylate, alkyd acrylate etc.Monomer can not use with monomer, use with the optical polymerism prepolymer, but one or more mixing of optical polymerism prepolymer is used.

In addition, when using the resin of oil resistivity excellence, even if when containing the replacement core of nonpolarity organic compound and sliding in through hole, lead for retractable pencil holding member 8 also is difficult for absorbing nonpolarity organic compound, the expansion that can alleviate lead for retractable pencil holding member 8.Its result can prevent that the lead for retractable pencil confining force from becoming big, and propelling pencil can use for a long time.Particularly, when its weight rate was a resin below 10% when flooding 20 days in the Liquid Paraffin (Cas No.8012-95-1) that uses at 70 ℃, lead for retractable pencil holding member 8 expanded hardly, and the lead for retractable pencil confining force is constant, so be suitable for employing.

And use when weight rate surpasses 10% resin when flooding 20 days in 70 ℃ of Liquid Paraffins, the absorption that 8 pairs of lead for retractable pencil holding members are replaced the nonpolarity organic compound that is contained in the core increases and the generation that can not prevent to expand, therefore, the lead for retractable pencil confining force will increase.When the lead for retractable pencil confining force surpassed 200g, lead for retractable pencil was difficult to move ahead under the effect of delivering mechanism, lead for retractable pencil might occur and fracture in inside, or lead for retractable pencil such as can not send at phenomenon.

In addition, also can contain in these resins such as blowing agent and coccoid etc.

Blowing agent can use CBA, physical blowing agent, thermal expansivity micro-capsule etc.The object lesson of CBA has: organic class thermal decomposition type blowing agents such as azo-compound, nitroso compound, hydrazine derivate, semicarbazide compound, azido cpd, triazole compounds; Organic class response type such as isocyanate compound blowing agent; Mineral-type thermal decomposition type blowing agents such as heavy carbonate, carbonate, sulphite, hydride; Mineral-type response type blowing agents such as mixture of mixture, hydrogen peroxide and the saccharomycetic mixture of sodium bicarbonate and acid, zinc powder and acid or the like.The object lesson of physical blowing agent can list: butane, pentane, hexane, dichloroethanes, carrene, Methyltestosterone, air, carbon dioxide, nitrogen etc.The object lesson of thermal expansivity micro-capsule can list: with low boiling hydrocarbons such as iso-butane, pentane, benzinum, hexanes is core material, with the micro-capsule of the thermoplastic resins that copolymer was constituted such as vinylidene chloride, acrylonitrile, acrylate, methacrylate as shell.These foaming bodies can add one or more.

In addition, Fig. 4 is the example that contains blowing agent in the resin, and Ref. No. 12 is the spaces that form by foaming.

As the object lesson of coccoid, can list: resin coccoids such as styrene, nylon, polyolefin, silicon, epoxy, polymethyl methacrylate, and inorganic coccoid such as silica, aluminium oxide, zirconia etc.In addition, also can list following example, promptly, the composite powder body that coccoids such as lining propylene ester class, carbamates, epoxies are filmed and formed on these coccoids, and, use automatic mortar, ball mill, jet pulverizer, atomizing pulverizer, hybridization (Ha イ Block リ ダ イ ザ) etc., absorption or embed coccoid that the inorganic coccoid less than this resin coccoid forms etc. on the resin coccoid.In addition, the shape of coccoid being there is no special qualification, can be shapes such as spherical, sheet, needle-like.These coccoids can add one or more.In addition, when adding fusing point and be higher than the coccoid of this resin, when the part of resin being removed, can form concavo-convexly, can further adapt to the dispersiveness of lead for retractable pencil external diameter by coccoid with laser beam.

And Fig. 5 is the example that contains coccoid 13 in the resin.

As the material of lead for retractable pencil guard block 6, get final product so long as can form the material of tubulose, be not particularly limited, for example can be: metal materials such as aluminium or its alloy, copper or its alloy, iron or its alloy, zinc or its alloy, magnesium or its alloy; Thermoplastic resins such as acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitritrile-styrene resin (AS), acrylic resin, Merlon, polypropylene, polyethylene, polyester, polystyrene; Ceramic materials such as alumina, zirconia, potter's clay; Natural materials such as timber or the like.In addition, also can be on the outer wall of lead for retractable pencil guard block 6 and/or inwall form the filming of nickel, chromium or noble metal etc., printed patterns etc. by methods such as plating, plated by electroless plating, application, printings in advance.

Below, the formation method is described.As the method for filling above-mentioned resin to lead for retractable pencil guard block 6, at normal temperature, normal pressure, heat, fill under the conditions such as pressurization and vacuum state and get final product, be not particularly limited.Next, the part of institute's potting resin is removed with laser beam and form hole 9 in the longitudinal direction, and the laser medium of employed laser beam as long as can above-mentioned resin be removed or be removed by chemical depletion (decomposition) with heat, is not particularly limited.Its object lesson can list: Solid State Lasers such as precious stone laser, YAG laser, glass laser, artificial schellite laser; He-Ne laser, Ar laser, Kr laser, CO ₂Gas lasers such as laser; Liquid lasers such as oxychloride selenium laser, chelate laser; Semiconductor lasers such as Ga-As laser, Ga-Sb laser, Cd-S laser, Zn-S laser and excimer laser or the like.As long as so that with formation holes such as the laser machine of above-mentioned laser medium or laser-marking devices.

About the shape of lead for retractable pencil holding member 8, can be following different shape: as shown in Figure 6, wall thickness be the shape of uniform thickness; Or as shown in Figure 7, from the tapered shape of rear end forward end; Or as shown in Figure 8, be the stairstepping shape from the rear end forward end; Or as shown in Figure 9, only the front inner surface at lead for retractable pencil guard block 6 is formed with lead for retractable pencil holding member 8 or the like.

And the formation method of its shape as previously mentioned; be after lead for retractable pencil guard block 6 is filled the resin that constitutes lead for retractable pencil holding member 8; the part of resin removed with laser beam and form hole 9 in the longitudinal direction form; but for forepiece 5 and the penholder 1 independent occasion that forms; also can be with lead for retractable pencil guard block 6 by be pressed into or insert form in its medium front end that is installed in forepiece 5 after, carry out removing operations such as a part of resin to lead for retractable pencil guard block 6 potting resins, with laser beam.

In addition, the lead for retractable pencil that is sent will be positioned at the inner surface in hole 9 of the lead for retractable pencil holding member 8 of lead for retractable pencil guard block 6, and this moment, owing to need lightly lead for retractable pencil be kept with the hole 9 of lead for retractable pencil holding member 8, so lead for retractable pencil holding member 8 must have elasticity diametrically.Therefore, if the aforementioned resin that is used for lead for retractable pencil holding member 8 does not have elasticity diametrically, then need to add and to give its flexible additive.As the lead for retractable pencil confining force that produces by lead for retractable pencil holding member 8, can not depend on the drop lead for retractable pencil confining force of this degree of deadweight as long as have residual core, but be that 10g to 100g is advisable to be set by direction with respect to lead for retractable pencil.And when the lead for retractable pencil confining force is 35g to 100g, can obtain the effect that to avoid lead for retractable pencil to rotate when writing with residual core.

In addition, the shape of the cross section in hole 9 can adopt shapes such as circle, ellipse, polygon, and perhaps inner surface is petal-like, or forms along its length slit or various shapes such as fin on inner surface.

Embodiment 1-1

Below, an example of the propelling pencil among the embodiment 1 is elaborated.

With external diameter is that 1.07mm, internal diameter are that 0.76mm, length are after the stainless steel tube of 6.0mm polishes with rolling barrel, to carry out degreasing with solvent.Then, (the シ リ コ of GE Toshiba-Application company makes, and TSE3221) fills in above-mentioned stainless steel tube by pressurization with silicone resin.Afterwards, be cured with 150 ℃, 30 minutes condition.Secondly, use CO ₂(Mitsubishi Electric Corporation makes laser machine; oscillator ML5036D; workbench ML2512HD II; working lenses f7.5 inch; main jet φ 2.0); punch under power output 200W, the condition in 0.5 second processing time, forming the aperture in the inside of lead for retractable pencil guard block is the lead for retractable pencil holding member of 0.54mm, forms lead for retractable pencil guard block shown in Figure 6.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A125 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 1-2

Below, an example of the propelling pencil among the embodiment 1 is elaborated.

With external diameter be 1.07mm, internal diameter be 0.76mm, length be the stainless steel tube of 6.0mm with after the rolling barrel polishing, carry out degreasing with solvent.Then, silicone resin (eastern レ ダ ウ コ-ニ Application グ シ リ コ-Application company makes, and adds special-purpose catalyst 10wt% in SE1701W/C), stir the companion after, pressurization is filled in above-mentioned stainless steel tube.Afterwards, be cured with 150 ℃, 30 minutes condition.Secondly, use CO ₂(サ Application Network ス company makes the laser-marking device; LP-200); with a footpath is that 0.18mm, power output 6W, sweep speed 500mm/s, 1 second processing time are that condition is punched; forming the aperture, rear end in the inside of lead for retractable pencil guard block is that 0.54mm, front end aperture are the lead for retractable pencil holding member of 0.52mm, forms lead for retractable pencil guard block shown in Figure 7.Secondly, (ペ ん て Ru company makes, and forepiece A125) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A125 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 1-3

Below, an example of the propelling pencil among the embodiment 1 is elaborated.

With external diameter is that 1.06mm, internal diameter are that 0.77mm, length are after the iron pipe of 6.0mm polishes with rolling barrel, to carry out degreasing with solvent.Secondly, carry out degreasing, form the Ni plated film of 5 μ m with the plated by electroless plating method with known electro-plating pre-treatment method. secondly, (Asahi Glass company makes, LF-105) to the filling of pressurizeing of the inside of aforementioned tube with carbamate resins.Be cured with normal temperature, humidity 90%, 24 hours condition.Secondly, use CO ₂(サ Application Network ス company makes the laser-marking device; LP-200); with a footpath is 0.18mm; power output 12W; sweep speed 500mm/s; the condition in 0.3 second processing time is punched; then; with a footpath is 0.18mm; power output 9W; sweep speed 500mm/s; the condition in 0.3 second processing time is punched; be 0.18mm with a footpath again; power output 6W; sweep speed 500mm/s; the condition in 0.3 second processing time is punched; forming the aperture, rear end in the inside of lead for retractable pencil guard block is 0.54mm; median pore radius is 0.53mm; the front end aperture is the lead for retractable pencil holding member of 0.52mm, forms lead for retractable pencil guard block shown in Figure 8.Secondly, (ペ ん て Ru company makes, and forepiece PG505-AD) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the PG505-AD forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 1-4

Below, an example of the propelling pencil among the embodiment 1 is elaborated.

With external diameter is that 1.07mm, internal diameter are that 0.76mm, length are after the stainless steel tube of 6.0mm polishes with rolling barrel, to carry out degreasing with solvent.Secondly, (the シ リ コ of GE Toshiba-Application company makes, and after adding blowing agent (Japanese Off イ ラ イ ト company make エ Network ス パ Application セ Le 091DU) 10wt% in TSE3221) and disperseing with mortar, fills in aforementioned tube through pressurization at silicone resin.Afterwards, carry out foamed solidification with 150 ℃, 30 minutes condition.Secondly, use CO ₂(Mitsubishi Electric Corporation makes laser machine; oscillator ML5036D; workbench ML2512HD II; working lenses f7.5 inch; main jet φ 2.0); punch with power output 200W, the condition in 0.3 second processing time, forming the aperture in the inside of lead for retractable pencil guard block is the lead for retractable pencil holding member of 0.54mm, forms lead for retractable pencil guard block shown in Figure 4.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A125 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 1-5

With external diameter is that 1.06mm, internal diameter are that 0.77mm, length are after the brass tube of 6.0mm polishes with rolling barrel, to carry out degreasing with solvent.Then, carry out degreasing, form the Ni plated film of 5 μ m, form the Cr plated film of 0.01 μ m afterwards with galvanoplastic with the plated by electroless plating method with the processing method before the known plating.Secondly, (Northwest ペ Chi Application ト company makes at thermal-curable acrylic coating, マ ヅ Network ロ Application 1000) (シ リ シ ァ chemical company of Fuji makes to add silica powdery body 15 in, サ イ リ シ ァ 770) 3wt%, after stirring companion's roller and disperse with three, under vacuum state, be filled into the inside of aforementioned tube.Afterwards, be cured with 180 ℃, 20 minutes condition.Secondly, use CO ₂(Mitsubishi Electric Corporation makes laser machine; oscillator ML5036D; workbench ML2512HD II; working lenses f7.5 inch; main jet φ 2.0); punch with power output 300W, the condition in 1 second processing time, form the lead for retractable pencil holding member of aperture 0.54mm in the inside of lead for retractable pencil guard block, form lead for retractable pencil guard block shown in Figure 9.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A125 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 2

In the present embodiment, except that the formation of lead for retractable pencil guard block, other is identical with embodiment 1, and the explanation of same section is omitted.

The formation of lead for retractable pencil guard block is that the method for the outside at least coated metal by bile duct in resin realizes in the present embodiment.

Among Figure 10, Figure 11, Ref. No. 14 is to constitute bile duct in the resin of the lead for retractable pencil holding member that lead for retractable pencil is kept, the 15th, constitute the coated metal of lead for retractable pencil guard block.Bile duct 14 can use with compression forming in the resin, transfer forming, injection mo(u)lding, extrusion modling, the interior bile duct that the whole bag of tricks moulding such as vacuum pouring moulding form, as the object lesson of this resin, can list: acrylic resin, silicones, fluororesin, polyvinyl chloride, carbamate resins, polyurethane resin, polyvinyl resin, silicone rubber, ethylene, propylene acids rubber, polyurethane rubber, epichlorohydrin rubber, acrylic rubber, EP rubbers, neoprene, natural rubber, isoprene rubber, haloflex, acrylonitrile-butadiene rubber, the phenylethylene elastomer, olefin type elastomer, ester class elastomer, carbamates elastomer etc.Resin by use has excellent oil resistance can obtain effect similarly to Example 1.

In addition, in these resins, can contain the coccoid described in the embodiment 1, blowing agent or electrically conductive microparticle etc.

The outside formed coated metal 15 of bile duct 14 is that two or more method in any or these method that adopts in plated by electroless plating method, physical vapor deposition, chemical vapor deposition method, galvanoplastic, the electrocasting is multilayer and forms in the resin of this formation lead for retractable pencil holding member.Its material can list: aluminium, copper, iron, zinc, magnesium, chromium, nickel, tin, titanium, gold, silver, palladium, platinum, rhodium, ruthenium and their alloy etc.This coated metal 15 both can be directly forms on the bile duct 14 in resin, also can be in to resin the surface of bile duct 14 activate, hydrophiling, give catalyst etc. and form after handling.

In addition, be in resin the outside of bile duct 14 when forming coated metal 15, get final product after inserting in the resin bar in the bile duct.

In addition since with embodiment 1 described same reason, require that bile duct 14 has elasticity diametrically in the resin, therefore, bile duct 14 rubber-like occasion not diametrically needs to add and can give its flexible additive in aforementioned resin.As the lead for retractable pencil confining force that produces by bile duct in the resin 14, make the residual core can be as long as have because of the drop lead for retractable pencil confining force of this degree of deadweight, be advisable but be set to 10g to 100g by direction with respect to lead for retractable pencil.And when the lead for retractable pencil confining force is 35g to 100g, can also obtain the effect that when writing, can avoid lead for retractable pencil to rotate with residual core.

In addition, the shape of cross section of bile duct 14 can be shapes such as circle, ellipse, polygon in the resin, be not particularly limited, can also be: inner surface be petal-like as shown in figure 12, or be formed with slit on the length direction or fin etc. on the inner surface as shown in figure 13, or inner surface is various shapes such as polygonal as shown in figure 14.

Embodiment 2-1

Below, an example of the propelling pencil among the embodiment 2 is elaborated.

At external diameter is that 1.0mm, internal diameter are that the insertion external diameter is that 0.5mm, length are the iron bar of 150mm in the hole of bile duct in the circle of 0.55mm, the silicone that length is 100mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of bile duct in the silicone.Secondly, with known sensitizer and active agent method, make palladium catalyst be adsorbed on the outside of bile duct in the silicone.Secondly, use non-electrolytic nickel phosphorus electroplate liquid (Japanese カ ニ ゼ Application company make BLUE SUMER), handled 320 minutes down for 90 ℃ in liquid temperature, with the metal level (nickel phosphorus layer) of plated by electroless plating method formation thickness 120 μ m.Secondly, after the drying, bar made of iron is removed, obtain the nickel phosphorus tubulation that inner surface has silicone resin.Secondly, nickel phosphorus tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 2-2

Below, an example of the propelling pencil among the embodiment 2 is elaborated.

The insertion external diameter is that 0.54mm, length are the iron bar of 100mm in the hole of bile duct in length is the pyrocondensation silicone rubber of 100mm (chemical industrial company of SHIN-ETSU HANTOTAI makes, ST-3d4 (0.2)).Secondly, form 80 μ m titanium nitride films with ion plating method.Secondly, bar made of iron is removed, obtain the titanium nitride tubulation that inner surface has silicone resin.Secondly, the titanium nitride tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece A125) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 2-3

Below, an example of the propelling pencil among the embodiment 2 is elaborated.

At external diameter is that 1.0mm, internal diameter are that 0.55mm, length are that to insert external diameter in the hole that contains bile duct in the electrically conductive microparticle silicone of 100mm be that 0.54mm, length are the iron bar of 100mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of bile duct in the silicone.Secondly, (Japanese chemical industry company makes NSF-E) 0.5ml/1 to add the stress release additive in nickel electroforming solution (Japanese chemical industry company makes, and sulfonyl amino acid nickel high concentration is bathed), so that the stress of the tunicle of separating out is the solution composition of compression stress, by current density 10A/dm ²Handling 60 minutes, is the metal level (nickel dam) of 100 μ m thereby form thickness with electrocasting.Secondly, after the drying, bar made of iron is removed, obtain the nickel tubulation that inner surface has silicone resin.Secondly, the nickel tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 3

In the present embodiment, except that the formation of lead for retractable pencil guard block, other is identical with embodiment 1, so the explanation of same section is omitted.

The formation of lead for retractable pencil guard block is to form conductive film by the outside at least of bile duct in resin, and the method for coated metal realizes on this conductive film.

Among Figure 15, Figure 16, Ref. No. 14 is to constitute bile duct in the resin of the lead for retractable pencil holding member that lead for retractable pencil is kept, the 16th, and conductive film, the 15th, constitute the coated metal of lead for retractable pencil guard block.Bile duct 14 can use by compression forming in the resin, transfer forming, injection moulding, extrusion modling, the interior bile duct that the whole bag of tricks moulding such as vacuum pouring moulding form, as the object lesson of this resin, can list: acrylic resin, silicones, fluororesin, polyvinyl chloride, carbamate resins, polyurethane resin, polyvinyl resin, silicone rubber, polyurethane rubber, ethylene, propylene acids rubber, epichlorohydrin rubber, acrylic rubber, EP rubbers, neoprene, natural rubber, isoprene rubber, haloflex, acrylonitrile-butadiene rubber, the phenylethylene elastomer, olefin type elastomer, ester class elastomer, carbamates elastomer or the like.In these resins, also can contain the coccoid described in the embodiment 1, blowing agent or electrically conductive microparticle etc.

The outside formed conductive film 16 of bile duct 14 is that two or more method in any or these method that adopts in plated by electroless plating method, physical vapor deposition, the chemical vapor deposition method is multilayer and forms in the resin of this formation lead for retractable pencil holding member.Its material can list: aluminium, copper, iron, zinc, magnesium, chromium, nickel, tin, titanium, gold, silver, palladium, platinum, rhodium, ruthenium and their alloy etc.This conductive film 16 both can be directly forms on the bile duct 14 in resin, also can be in to resin the surface of bile duct 14 activate, hydrophiling, give catalyst etc. and form after handling.

In addition, be in resin the outside of bile duct 14 when forming conductive film 16, get final product after inserting in the resin bar in the bile duct.

As the formation method that on conductive film 16, forms coated metal 15, be immersed in and be used for forming in the aqueous solution that contains metal ion of metal level as long as will be formed with in the resin of conductive film 16 bile duct, bile duct in the resin that floods, be formed with conductive film is added negative potential and forms metal and get final product.Its concrete formation method can have all selections according to the shape of bile duct in the resin, length, thickness etc., as galvanoplastic, electrocasting etc., as long as can form metal level, it is not particularly limited.

In addition since with same reason described in the embodiment 1, require that bile duct 14 has elasticity diametrically in the resin, therefore, bile duct 14 does not have the occasion of radial elastic in aforementioned resin, needs to add to give its flexible additive.As the lead for retractable pencil confining force that produces by bile duct in the resin 14, can be as long as have residual core because of the drop lead for retractable pencil confining force of this degree of deadweight, be advisable but be set to 10g to 100g by direction with respect to lead for retractable pencil.And when the lead for retractable pencil confining force is 35g to 100g, can also obtain when writing, can avoid the effect of lead for retractable pencil rotation with residual core.

In addition, the shape of cross section of bile duct 14 can be shapes such as circle, ellipse, polygon in the resin, be not particularly limited, can also adopting as shown in figure 17, inner surface is petal-like, or be formed with slit on the length direction or fin etc. on the inner surface as shown in figure 18, or inner surface is polygonal or the like various shapes as shown in figure 19.

Embodiment 3-1

Below, an example of the propelling pencil among the embodiment 3 is elaborated.

External diameter be 1.0mm, internal diameter be 0.55mm circle, length is that to insert external diameter in the hole of bile duct in the silicone of 100mm be that 0.54mm, length are the bar made of iron of 100mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of bile duct in the silicone.Secondly, with known sensitizer and active agent method, make palladium catalyst be adsorbed on the outside of bile duct in the silicone.Secondly, using non-electrolytic nickel phosphorus electroplate liquid (Japanese カ ニ ゼ Application company make BLUE SUMER) to handle 1 minute down for 90 ℃ in liquid temperature, is the conductive film of 0.3 μ m with plated by electroless plating method formation thickness.Afterwards, (Japanese chemical industry company makes NSF-E) 0.5ml/l to add the stress release additive in nickel electroforming solution (Japanese chemical industry company makes, and sulfonyl amino acid nickel high concentration is bathed), so that the stress of the tunicle of separating out is the solution composition of compression stress, by current density 10A/dm ²Handled 60 minutes, forming thickness with electrocasting is the metal level (nickel dam) of 100 μ m.Secondly, after the drying, plug made of iron is removed, obtain the nickel tubulation that inner surface has silicone resin.Secondly, the nickel tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece PG305D) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 3-2

Below, an example of the propelling pencil among the embodiment 3 is elaborated.

Inserting external diameter in the hole of bile duct in the pyrocondensation silicone rubber of length 150mm (chemical industrial company of SHIN-ETSU HANTOTAI makes, ST-3d4 (0.2)) is that 0.54mm, length are the iron bar of 150mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of bile duct in the pyrocondensation silicone rubber.Secondly, with known sensitizer and active agent method, make palladium catalyst be adsorbed on the outside of bile duct in the pyrocondensation silicone rubber.Secondly, using non-electrolytic nickel phosphorus electroplate liquid (Japanese カ ニ ゼ Application company make BLUE SUMER), handled 5 minutes down for 90 ℃ in liquid temperature, is the conductive film of 1.0 μ m with plated by electroless plating method formation thickness.Afterwards, use industrial chromium plating bath, by current density 10A/dm ²Handle, forming thickness with galvanoplastic is the metal level (hard chromium layer) of 80 μ m.Secondly, after the drying, iron plug is removed, obtain the hard chromium tubulation that inner surface has silicone resin.Secondly, hard chromium tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece A125) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 3-3

Below, an example of the propelling pencil among the embodiment 3 is elaborated.

The insertion external diameter is that 0.54mm, length are the iron bar of 100mm in the hole of bile duct in length is the pyrocondensation silicone rubber of 100mm (chemical industrial company of SHIN-ETSU HANTOTAI makes, ST-3d4 (0.2)).Secondly, form 0.1 μ m film made of copper as conductive film with ion plating method.Afterwards, (Japanese chemical industry company makes NSF-E) 5ml/1 to add the stress release additive in nickel electroforming solution (Japanese chemical industry company makes, and sulfonyl amino acid nickel high concentration is bathed), so that the stress of the tunicle of separating out is the solution composition of tension, by current density 10A/dm ²Handled 60 minutes, forming thickness with electrocasting is the metal level (nickel dam) of 100 μ m.Secondly, after the drying, plug made of iron is removed, obtain the nickel tubulation that inner surface has silicone resin.Secondly, the nickel tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece A125) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 3-4

Below, an example of the propelling pencil among the embodiment 2 is elaborated.

External diameter be 1.0mm, internal diameter be 0.55mm circle, length is that to insert external diameter in the hole of bile duct in the silicone of 100mm be that 0.54mm, length are the iron bar of 100mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of bile duct in the silicone.Secondly, in aminosilane-treated liquid (Japanese エ ニ-カ company makes, the 1wt% alcoholic solution of A1100), flood 10 minutes with 50% ℃ of liquid temperature after, with 100 ℃ of dryings 60 minutes.Secondly, with known sensitizer and active agent method, make palladium catalyst be adsorbed on the outside of bile duct in the silicone.Secondly, using non-electrolytic nickel phosphorus electroplate liquid (Japanese カ ニ ゼ Application company make BLUE SUMER), handled 1 minute down for 90 ℃ in liquid temperature, is the conductive film of 0.3 μ m with plated by electroless plating method formation thickness.Afterwards, use nickel electroforming solution (Japanese chemical industry company makes, and sulfonyl amino acid nickel high concentration is bathed),, press current density 10A/dm so that the stress of the tunicle of separating out is the solution composition of compression stress ²Handled 120 minutes, forming thickness with electrocasting is the metal level (nickel dam) of 150 μ m.Secondly, after the drying, plug made of iron is removed, obtain the nickel tubulation that inner surface has silicone resin.Secondly, the nickel tubulation is cut into the length of 6mm, forms the lead for retractable pencil guard block.Secondly, (ペ ん て Ru company makes, and forepiece A125) is pressed into this lead for retractable pencil guard block and be fixed on the other forepiece (ペ ん て Ru company makes, the A127 forepiece), thereby obtains propelling pencil to remove propelling pencil.

Embodiment 4

Thereby lead for retractable pencil guard block of the present invention also can apply external force from the outside and make it to take place plastic deformation formation variant part.

Figure 20 and Figure 21 illustrate an example of lead for retractable pencil guard block.

In the inside of lead for retractable pencil guard block, be formed with resin bed 17 that lead for retractable pencil is kept and the metal level 18 that is formed at the outside of this resin bed 17.Be formed with through hole on this resin bed 17, lead for retractable pencil L slides in this through hole, by this resin bed 17, not only for long lead for retractable pencil, even if also can keep for residual core.

The lead for retractable pencil guard block makes it to be out of shape and forms by from the outside its leading section being applied external force.Because this plastic deformation, the aperture of the through hole of resin bed 17 will attenuate.

Therefore, attenuate, can make lead for retractable pencil press-resin layer 17 when the part by narrowing down, thereby increase resistance sense and prevent that residual core from shaking by making lead for retractable pencil guard block front end external diameter.

In addition, after the part of the resin bed 17 of the front end of lead for retractable pencil guard block is removed, attenuate, can also prevent that residual core from rocking by making lead for retractable pencil guard block front end external diameter.

In addition, also can between resin bed 17 and metal level 18, form conductive film 16.

Embodiment 5

Describe in conjunction with Figure 22.

Present embodiment is the resin bed in the lead for retractable pencil guard block to be removed a part form.

Remove the formation method of portion 20 as the part of resin bed, can list: laser beam is removed method (below be called the method for removing 1), cutting method (below be called the method for removing 2), dissolution method (below be called the method for removing 3) or the like.The method that it is concrete can have all selections according to factors such as the material of resin bed and shapes.

In the method for removing 1, can use the lasing medium that the part of resin bed 17 is removed with hot melting way by laser beam, perhaps the laser medium that is removed in chemical depletion (decomposition) mode.For example, can list: Solid State Lasers such as precious stone laser, YAG laser, glass laser, artificial schellite laser; He-Ne laser, Ar laser, Kr laser, CO ₂Gas lasers such as laser; Liquid lasers such as oxychloride selenium laser, chelate laser; Semiconductor lasers such as Ga-As laser, Ga-Sb laser, Cd-S laser, Zn-S laser and excimer laser or the like are not particularly limited it.

In the method for removing 2, can list methods such as the rotary cut processing of using cutting tool for boring, the drilling processing of using fluted drill or semilune cutter, reamer processing, wheel grinding processing, it is not particularly limited.

In the method for removing 3, can list heating head by being pressed in method that makes it to be out of shape on the resin bed 17 etc.It is not particularly limited.

In addition, remove the shape that is removed of portion 20, mainly select cylindric, coniform, rotary body shape, polygonal shape etc., but shape is not particularly limited for the part of resin bed.

Embodiment 5-1

Figure 23, Figure 24, Figure 25 illustrate the one example.

As embodiment 5-1, except before the processing leading section fore-end of resin bed 17 being removed the part in embodiment 4, other is identical with embodiment 4.

Present embodiment is that the fore-end of resin bed 17 is removed portion 20 as the part, and therefore, the elastic force of the resin bed 17 of leading section is compared also little with embodiment 4, so lead for retractable pencil is littler than embodiment 4 rocking of leading section.

When the fore-end of resin bed 17 is removed a part, can for example shown in Figure 26 resin bed be removed fully, or be the flowerpot shape as shown in figure 27 and remove.

Embodiment 5-2

Figure 28 illustrates the one example.

Present embodiment is to form lead for retractable pencil guard block 6 and forepiece 5 forms by the metal level that is formed at resin bed 17 outsides.That is, after metal level is than heavy back formation,, its outward appearance and rear inner surface shape are processed into different shape by modes such as machining, and then, lead for retractable pencil guard block 6 front ends are carried out tube reducing processing and make it the footpath contracting.

Embodiment 5-3

Figure 29 illustrates the one example.

Present embodiment is that the leading section with the metal level 18 of lead for retractable pencil guard block makes it to internal strain with forcing press etc., thereby the internal diameter of leading section is directly contracted form.In the present embodiment, also can adopt a kind of like this method, that is, after at first having formed the metal tubulation front end metal level 18 that process has been processed, in metal level 18, form resin bed 17 by pressure processing or machining.

Embodiment 5-4

Figure 30 illustrates the one example.

As present embodiment, be in embodiment 4, be not that the diameter of leading section is diminished on complete cycle, thereby but be divided into several positions make it the distortion internal diameter (in this occasion, being inscribed circle diameter) is diminished, in addition, identical with embodiment 4.A plurality of positions are added man-hour, can adopt methods such as pressure processing, punch process, mould extension processing.

Embodiment 6

Below, the formation method of plastic deformation is elaborated.

The formation method of plastic deformation in the present embodiment adopts is tube reducing processing method (below be called plastic deformation method 1).

In plastic deformation method 1, can list, utilize its inner surface to have can to make the mould of the shape of lead for retractable pencil guard block leading section distortion, pipe is carried out the tube reducing method for processing.Shape to tube reducing processing is not particularly limited.

With the dimethyl class silicone inner bag pipe of extrusion process formation external diameter φ 0.86mm (circle), inscribed circle diameter φ 0.52mm (hexagon), length 500mm, in this silicone, insert plug made of iron in the hole of bile duct.

Secondly, form the conductive film (copper film) of 0.2 μ m with the surface of ion plating method bile duct in above-mentioned silicone.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF H-3) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, forming thickness is the metal level (nickel dam) of 120 μ m.

Secondly, carry out drying, after this, iron plug is removed, it is cut off with guillotine.

Guillotine is the GC-320PB that テ イ ス コ company makes, and uses to cut thickness and be the type below the 0.5mm, and it is 1500～4000m/ minute that the rotary speed of guillotine is decided to be the guillotine linear velocity.

On the end face of the lead for retractable pencil guard block that cuts off, can there be the burr that produces when cutting off, therefore, with the burr removing of methods such as rolling barrel polishing with the end face periphery.

Rolling barrel uses the centrifugal running barrel machine, carries out wet method processing.The abrasive particle of rolling barrel uses titanium abrasive particle and water to polish with surfactant mixtures.

Below, the method that the part of the resin bed 17 of lead for retractable pencil guard block front end is removed is described.

The method of removing adopts CO ₂Laser beam is removed method.

The condition of laser beam is, focal length 20mm, and 15 watts of optical output powers were shone 1.5 seconds.Thus, can resin bed 8 be removed (with reference to the Ref. No. 9 of Figure 22) to the degree of depth of 1.5mm with 0.5mm.

Below, in conjunction with Figure 31, Figure 32, Figure 33, for applying from the outside that external force makes it to produce plastic deformation so that the leading section inscribed circle diameter describe less than the manufacture method of rear inscribed circle diameter.

Distortion is carried out tube reducing processing with mould 21 and is realized.

The material of mould 21 is used superhard alloy.The inner surface configuration 22 of mould 21 both can be identical with the shape of generally managing tube reducing processing, be the shape that easy curve carries out tube reducing processing, also can be taper.

Internal configurations at mould 21 has plug 23 and dnockout pipe 24.

Plug 23 adds and inserts lead for retractable pencil guard block inside man-hour lead for retractable pencil guard block leading section being carried out tube reducing; its objective is, prevent to cause the desired value (with reference to Figure 34) of the internal diameter of tube reducing processing back lead for retractable pencil guard block leading section less than the front aperture internal diameter because of the influence of metal level 18 thickness dispersivenesses.

And dnockout pipe 24 is when tube reducing processing back lead for retractable pencil guard block is nipped on mould, the lead for retractable pencil guard block is separated with mould 21 dispose (with reference to Figure 33).

Mould 24 is installed on the forcing press, lead for retractable pencil guard block 6 is contained in is disposed on mould 21 workpiece placement station 25 on axially (with reference to Figure 31).

Then, die device 26 is descended with lead for retractable pencil guard block 6 is pressurizeed (with reference to Figure 32).

Make die device 26 risings (with reference to Figure 33) behind the decline corresponding size.

In addition, the relation of the position between workpiece placement station 25 and the die device 26 also only is not limited to above-below direction.

By above-mentioned series of processes tube reducing processing is carried out in the end of lead for retractable pencil guard block; make leading section distortion, the inscribed circle diameter of metal level 18 attenuate; not only can prevent that residual core from dropping because of deadweight and write the lead for retractable pencil guard block of the propelling pencil that Shi Buhui feels that residual core rocks thereby form, obtained inner surface have the silicone resin layer, leading section produces (with reference to the numbering 19 of Figure 33) lead for retractable pencil guard block (with reference to Figure 33) of plastic deformation.

Embodiment 7

The formation method of plastic deformation in the present embodiment adopts is to push and the method that makes it to be out of shape (below be called plastic deformation method 2) with bearing etc.

In plastic deformation method 2, can list: outer peripheral face is the shape that can make lead for retractable pencil guard block leading section distortion and several bearings that form disposed radially around the axle center, several bearings that will dispose in the rotation of lead for retractable pencil guard block are slowly pushed towards the center, thereby make a kind of like this extension processing method of lead for retractable pencil guard block leading section distortion; And, make lead for retractable pencil guard block rotation, from a direction of lead for retractable pencil guard block leading section side, slowly push have the shape that can make it to be out of shape such as bearing etc., thereby make method of lead for retractable pencil guard block leading section distortion or the like, this is not particularly limited.

Also the lead for retractable pencil guard block can be fixed and make the bearing sideway swivel.

(the シ リ コ of GE Toshiba-Application company makes to use fluoro-dimethyl copolymerization silicone rubber (Off ロ ロ-ジ メ チ Le overlaps シ リ コ-Application go system altogether), XE24-A1680), by extrinsion pressing formation external diameter φ 0.90mm (circle), internal diameter φ 0.53mm (circle) and length is the interior bile duct of fluoro-dimethyl copolymerization silicone of 600mm, inserts the plug that ferroalloy is made in this silicone in the hole of bile duct.

Secondly, the surface with ion plating method bile duct in above-mentioned silicone forms conductive film (copper film) 0.5 μ m.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF H-2) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone of above-mentioned conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, forming thickness is the metal level (nickel dam) of 120 μ m.

Secondly, carry out drying, after it, ferroalloy coremaking rod is removed.The method of cutting off is identical with embodiment 6 with the method for deburring.

Removing of the interior bile duct part of silicone is the lead for retractable pencil guard block to be fixed on make it rotation on the rotating shaft, is that the machining method is carried out by boring processing.Also can make cutting tool for boring rotation and the lead for retractable pencil guard block is fixed.

Below, in conjunction with Figure 34, Figure 35, Figure 36, for applying from the outside that external force makes it to produce plastic deformation so that the leading section inscribed circle diameter describe less than the manufacture method of rear inscribed circle diameter.

Distortion is to be undertaken by the extension processing method that the roof pressure that is the bearing 27 that the shape (with reference to the numbering 22 of Figure 34) that can make front end distortion forms makes it to be out of shape.

As bearing 27, dispose 2 to 3 radially with respect to the axle center of rotating shaft 28, fix and can rotate freely by bearing fixing parts 29.

The bearing arrangement 30 that bearing 27 is installed is installed in such as on rotatable main shaft or the motor.

Plug 23 similarly to Example 6; in that being carried out tube reducing, lead for retractable pencil guard block leading section adds man-hour; insert lead for retractable pencil guard block inside, its objective is, prevent that influence because of metal level 18 thickness dispersivenesses from causing internal diameter after the tube reducing processing less than front aperture internal diameter desired value.

The lead for retractable pencil guard block is installed on the workpiece placement station 25, with bearing arrangement 30 be assemblied in rotate on the axes extending line of lead for retractable pencil guard block such as motor on (with reference to Figure 34).

Drive by motor etc. and in the rotation at bearing arrangement 30, it is pushed make it contact, to carrying out tube reducing processing in lead for retractable pencil guard block end, thereby make the leading section of metal level 18 be out of shape (with reference to Figure 35) with the lead for retractable pencil guard block.

Make bearing arrangement 30 risings (with reference to Figure 36) behind the decline corresponding size.

In addition, the relation of the position between workpiece placement station 25 and the bearing arrangement 30 is not limited in above-below direction.

By above-mentioned series of processes inscribed circle diameter is attenuated; not only can prevent that residual core from dropping because of deadweight and write the lead for retractable pencil guard block of the propelling pencil that Shi Buhui feels that residual core rocks, and obtains inner surface and have (with reference to the numbering 19 of Figure 36) the silicone resin layer, leading section generation plastic deformation lead for retractable pencil guard block (with reference to Figure 36) thereby form.

Embodiment 8

The formation method of plastic deformation in the present embodiment is to make the punch process that the part of leading section deforms (below be called plastic deformation method 3) method with drift etc.

In plastic deformation method 3, can list the processing method for stamping that utilizes drift that the part of lead for retractable pencil guard block leading section side periphery is deformed at several places.Shape to the drift front end is not particularly limited.

In being the fluoromethane alkyls silicone of 6mm, external diameter φ 0.92mm (circle), inscribed circle diameter φ 0.51mm (pentagon) and length inserts the plug that ferroalloy is made in the hole of bile duct (bile duct in the fluorosilicone).

Secondly, form the conductive film (copper film) of 0.2 μ m with the surface of ion plating method bile duct in above-mentioned silicone.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone (bile duct in the fluorosilicone) of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, forming thickness is the metal level (nickel dam) of 100 μ m.

Secondly, carry out drying, after this, ferroalloy coremaking rod is removed.

The method that the part of bile duct in the silicone is removed adopts is the heat distortion temperature that the heating head that will have the shape of being removed is heated to silicone, makes the silicone distortion obtain the method for respective shapes by pushing.

Below, in conjunction with Figure 37, Figure 38, Figure 39, for applying from the outside that external force makes it to produce plastic deformation so that the leading section inscribed circle diameter describe less than the manufacture method of rear inscribed circle diameter.

Distortion is to carry out punch process by several positions of 31 pairs of leading section peripheries of drift to realize.

Distortion is to realize by the extension processing that the roof pressure that is the drift 31 that the shape (with reference to the numbering 22 of Figure 37) that can make front end distortion forms makes it to be out of shape.

Drift 31 both can be to divide with drift to carry out punching press several times, also drift can be disposed radially and carried out punching press simultaneously.

Pressing direction is not particularly limited.

Figure 39 is divided into that several positions make it to be out of shape and example that inscribed circle diameter is diminished.

In addition; same with embodiment 6, embodiment 7; in that being carried out tube reducing, lead for retractable pencil guard block leading section adds man-hour; in order to prevent that influence because of metal level 18 thickness dispersivenesses from causing internal diameter after the tube reducing processing less than front aperture internal diameter desired value and in order to improve the precision that connects the aperture in the front end, also can carry out punching press with the state that inserts plug.

The shape of distortion is not limited to the shape shown in the figure.

And the method that makes it to be out of shape is not limited to punch process, also can be pressure processing or the extension processing carried out with mould.

Embodiment 9

Use mixes fluoromethane substituted alkyl class silicon rubber (fluorosilicone) and dimethyl class silicone rubber with 1: 1 ratio silicone rubber forms external diameter φ 0.92mm (circle), inscribed circle diameter φ 0.51mm (pentagon) and length is the interior bile duct of fluorine silicon-dimethyl-silicon mixings silicone of 500mm by extrusion modling.In this silicone, insert the plug that ferroalloy is made in the hole of bile duct.

Secondly, the surface with ion plating method bile duct in above-mentioned silicone forms conductive film (copper film) 0.2 μ m.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of fluoro-dimethyl mixing silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, forming thickness is the metal level (nickel dam) of 100 μ m.

Secondly, carry out drying, after this, ferroalloy coremaking rod is removed.

Cut-out, deburring, remove any one method that silicone, tube reducing processing etc. can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8; Thereby obtain inner surface and have the lead for retractable pencil guard block silicone resin layer, leading section generation plastic deformation.

Embodiment 10

By extrusion modling formation external diameter φ 0.86mm (circle), inscribed circle diameter φ 0.52mm (hexagon) and length is the dimethyl class silicone inner bag pipe of 500mm, inserts plug made of iron in this silicone in the hole of bile duct.

Hydrophilicity-imparting treatment is carried out by corona discharge in outside to bile duct in this silicone.Secondly, make palladium catalyst be adsorbed on the outside of bile duct in this silicone with known sensitizer and active agent method.

Secondly, be immersed in the non-electrolytic nickel electroplate liquid (BLUE SUMER (Japanese カ ニ ゼ Application company make) is carried out 5 times of dilution gained with ion exchange water), with 90 ℃ of liquid temperature, 1 minute be that condition is handled, forming thickness at above-mentioned silicone inner bag tube-surface is 0.2 μ m conductive film (Ni-P alloy firm).

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF H-3) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the dimethyl class silicone inner bag pipe of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, form the metal level (nickel dam) of thickness 120 μ m.

Secondly, carry out drying, after this, ferroalloy coremaking rod is removed.

Cut-out, deburring, remove any one method that the processing of silicone, tube reducing can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8; Thereby obtain inner surface and have the lead for retractable pencil guard block silicone resin layer, leading section generation plastic deformation.

Embodiment 11

(the シ リ コ of GE Toshiba-Application company makes to use fluoro-dimethyl copolymerization silicone rubber, XE24-A1680), by extrinsion pressing formation external diameter φ 0.90mm (circle), internal diameter φ 0.53mm (circle) and length is the interior bile duct of fluoro-dimethyl copolymerization silicone of 600mm, inserts the plug that ferroalloy is made in this silicone in the hole of bile duct.

Secondly, plasma treatment is carried out in the outside of bile duct in the above-mentioned silicone make it hydrophiling.Secondly, with known catalyst method, make palladium catalyst be adsorbed on the outside of bile duct in the above-mentioned silicone.

Secondly, bile duct in the above-mentioned silicone is immersed in non-electrolytic copper electroplating liquid, and (chemical copper liquid 500A liquid is (in wild pharmaceuticals industry manufacturing 125mL/L of company difficult to understand and the chemical copper liquid 500B liquid (mixed liquor of the wild pharmaceuticals industry manufacturing 125mL/L of company difficult to understand), with 25 ℃ of liquid temperature, 10 minutes be that condition is handled, forming thickness is the conductive film (copper film) of 0.5 μ m.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSFH-2) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of fluoro-dimethyl copolymerization silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, form the metal level (nickel dam) of thickness 120 μ m.

Secondly, carry out drying, after it, ferroalloy coremaking rod is removed.

Cut-out, deburring, remove any one method that silicone, tube reducing processing etc. can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8; Thereby obtain inner surface and have the lead for retractable pencil guard block silicone resin layer, leading section generation plastic deformation.

Embodiment 12

Insert the bar of ferroalloy manufacturing in the hole of bile duct in length is the pyrocondensation silicone of 300mm (chemical industrial company of SHIN-ETSU HANTOTAI makes, ST-3d4 (0.2)).

Secondly, form the conductive film (copper film) of 0.2 μ m at above-mentioned pyrocondensation silicone inner bag tube-surface with ion plating method.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of above-mentioned pyrocondensation silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, forming thickness is the metal level (nickel dam) of 100 μ m.

Secondly, carry out drying, after this, ferroalloy coremaking rod is removed.

Cut-out, deburring, remove any one method that the processing of silicone, tube reducing can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8; Thereby obtain inner surface and have the lead for retractable pencil guard block silicone resin layer, leading section generation plastic deformation.

Embodiment 13

In being the fluororesin of 500mm, external diameter φ 1.0mm (circle), internal diameter φ 0.5mm (circle) and length inserts plug made of iron in the hole of bile duct.

Secondly, form the conductive film (copper film) of 0.2 μ m with ion plating method surface of bile duct in above-mentioned.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of fluororesin of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, forming thickness is the metal level (nickel dam) of 100 μ m.

Secondly, carry out drying, after this, ferroalloy coremaking rod is removed.

Cut-out, deburring, remove any one method that the processing of silicone, tube reducing can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8; Thereby obtain inner surface and have lead for retractable pencil guard block fluororesin layer, leading section generation plastic deformation.

Embodiment 14

By extrusion modling formation external diameter 1.0mm (circle), internal diameter φ 0.58mm (circle) and length is the propylene parent tube of 500mm.Secondly, hydrophilicity-imparting treatment is carried out by corona discharge in the outside of this propylene parent tube.Secondly, with known sensitizer and active agent method, make palladium catalyst be adsorbed on the outside of aforementioned propylene parent tube.Secondly, with known catalyst method, make palladium catalyst be adsorbed on the outside of this propylene parent tube.

Secondly, this propylene parent tube is immersed in non-electrolytic copper electroplating liquid, and (chemical copper liquid 500A liquid is (in wild pharmaceuticals industry manufacturing 125mL/L of company difficult to understand and the chemical copper liquid 500B liquid (mixed liquor of the wild pharmaceuticals industry manufacturing 125mL/L of company difficult to understand), with 25 ℃ of liquid temperature, 10 minutes be that condition is handled, forming thickness is the conductive film (copper film) of 0.5 μ m.

Afterwards, use copper electroforming solution (acid copper sulfate bath), dipping is formed with this propylene parent tube of conductive film, at current density 5A/dm ²Condition under add negative potential, forming thickness is the metal level (copper layer) of 50 μ m.

Cut-out, deburring, remove any one method that the processing of silicones, tube reducing can be adopted embodiment 5, embodiment 6, embodiment 7 and embodiment 8, have lead for retractable pencil guard block acrylate resin layer, leading section generation plastic deformation thereby obtain inner surface.

Embodiment 15

(the シ リ コ of GE Toshiba-Application company makes to use fluoro-dimethyl copolymerization silicone rubber, XE24-A1680: (dipping is in the time of 20 days in 70 ℃ Liquid Paraffin for weight rate 2%, down together)), by extrinsion pressing formation external diameter φ 0.86mm (circle), inscribed circle diameter φ 0.52mm (hexagon) and length is the interior bile duct of fluoro-dimethyl copolymerization silicone of 500mm, inserts plug made of iron in this silicone in the hole of bile duct.

Secondly, with ion plating method, form the conductive film (copper film) of 0.5 μ m at above-mentioned silicone inner bag tube-surface.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF H-3) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, forming thickness is the metal level (nickel dam) of 120 μ m.

Secondly, carry out drying, after at it after, ferroalloy coremaking rod being removed, it is cut off and acquisition lead for retractable pencil guard block with guillotine.

Lead for retractable pencil is passed through from the lead for retractable pencil guard block that is obtained; (イ マ ダ company makes: MODEL DPX-1) measure the lead for retractable pencil confining force with digital force gauge; 200 lead for retractable pencils are passed after the lead for retractable pencil guard block, when measuring the lead for retractable pencil confining force with digital force gauge once more, do not find that the lead for retractable pencil confining force increases.

Embodiment 16

(the シ リ コ of GE Toshiba-Application company makes to use fluoro-dimethyl copolymerization silicone rubber, XE24-A1680: weight rate 2%), by extrinsion pressing formation external diameter φ 0.90mm (circle), internal diameter φ 0.53mm (circle) and length is the interior bile duct of fluoro-dimethyl copolymerization silicone of 500mm, inserts the plug that ferroalloy is made in this silicone in the hole of bile duct.

Secondly, with ion plating method, form the conductive film (copper film) of 0.5 μ m at above-mentioned silicone inner bag tube-surface.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF H-2) 10mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone of above-mentioned conductive film, at current density 10A/dm ²Condition under add negative potential, handled 70 minutes, forming thickness is the metal level (nickel dam) of 120 μ m.

Secondly, carry out drying, after at it after, the ferroalloy plug being removed, it is cut off and acquisition lead for retractable pencil guard block with guillotine.

The replacement core is passed through from the lead for retractable pencil guard block that is obtained, measure the lead for retractable pencil confining force, 200 replacement cores are passed after the lead for retractable pencil guard block, when measuring the lead for retractable pencil confining force with digital force gauge once more, do not find that the lead for retractable pencil confining force increases with digital force gauge.

Embodiment 17

At external diameter φ 0.92mm (circle), inscribed circle diameter φ 0.51mm (pentagon) and length is the fluoromethane substituted alkyl class silicone inner bag pipe (bile duct in the fluorosilicone: insert the plug that ferroalloy is made in hole weight rate 1%) of 6mm.

Secondly, form the conductive film (copper film) of 0.2 μ m at above-mentioned silicone inner bag tube-surface with ion plating method.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of silicone (bile duct in the fluorosilicone) of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, form the metal level (nickel dam) of thickness 100 μ m.

Secondly, carry out drying, after at it after, the ferroalloy plug being removed, it is cut off and acquisition lead for retractable pencil guard block with guillotine.

The replacement core is passed through from the lead for retractable pencil guard block that is obtained, measure the lead for retractable pencil confining force, 200 replacement cores are passed after the lead for retractable pencil guard block, when measuring the lead for retractable pencil confining force with digital force gauge once more, do not find that the lead for retractable pencil confining force increases with digital force gauge.

Embodiment 18

Use mixes fluoromethane substituted alkyl class silicon rubber (fluorine silicon) and dimethyl class silicone rubber in 1: 1 ratio silicone rubber (weight rate 8%) forms external diameter φ 0.92mm (circle), inscribed circle diameter φ 0.51mm (pentagon) and length is the interior bile duct of fluoro-dimethyl mixings silicone of 500mm by extrusion modling.In this silicone, insert the plug that ferroalloy is made in the hole of bile duct.

Secondly, form the conductive film (copper film) of 0.2 μ m with the surface of ion plating method bile duct in above-mentioned silicone.

Afterwards, in nickel electroforming solution (60% sulfonyl amino acid nickel solution (Japanese chemical industry company make) 1000g/L, nickel chloride 30g/L, boric acid 35g/L), add additive (Japanese chemical industry company manufacturing, NSF-E) 5mL/L is modulated into the nickel electroforming solution that is used for forming metal level.

Secondly, be used for forming in the nickel electroforming solution of metal level at this, dipping is formed with the interior bile duct of fluoro-dimethyl mixing silicone of conductive film, at current density 10A/dm ²Condition under add negative potential, handled 60 minutes, forming thickness is the metal level (nickel dam) of 100 μ m.

Secondly, carry out drying, after at it after, the ferroalloy plug being removed, it is cut off and acquisition lead for retractable pencil guard block with guillotine.

The replacement core is passed through from the lead for retractable pencil guard block that is obtained, measure the lead for retractable pencil confining force, 200 replacement cores are passed after the lead for retractable pencil guard block, when measuring the lead for retractable pencil confining force with digital force gauge once more, do not find that the lead for retractable pencil confining force increases with digital force gauge.

Comparative example

With commercially available propelling pencil product (ペ ん て Ru company makes, A125, use external diameter as 0.9mm, internal diameter as 0.61mm, length as the stainless steel tube of 6mm as the lead for retractable pencil guard block, have the retaining parts) as a comparative example.

To the lead for retractable pencil confining force of the propelling pencil that obtained by the foregoing description 1-1～1-5,2-1～2-3,3-1-3-4 and comparative example and have or not residual core to drop because of deadweight to estimate, evaluation result is shown in table 1, the table 2.

For the lead for retractable pencil confining force in the evaluation of lead for retractable pencil confining force, the following measurement, promptly, ((ペ ん て Ru company makes for nominal diameter 0.5 (JIS S 6005), HB with replacing core with propelling pencil, Hi-POLYMER Ain (C225-HB)), be inserted in the lead for retractable pencil guard block that is installed on the forepiece, in vertical state, it is afterburning downwards to grip forepiece, measures lead for retractable pencil and begins load (static friction load) when rearward mobile; Each estimates averaged, maximum and minimum of a value to 5 samples (comparative example is 5 products).

In addition; for having or not residual core to drop because of deadweight; followingly confirm; promptly; aforementioned Hi-POLYMER Ain (C225-HB) is cut into 3mm (residual core); insert from the front end of the lead for retractable pencil guard block of embodiment, comparative example, the rear end that makes residual core is connected mutually with follow-up lead for retractable pencil and is vertical, and the state of residual core is at this moment confirmed.

Table 1

	Lead for retractable pencil confining force (g)
				On average	Maximum	Minimum
	Embodiment 1-1	????15	????16				????14
Embodiment 1-2				????20	????22	????18
	Embodiment 1-3	????50	????51				????49
Embodiment 1-4				????30	????33	????27
	Embodiment 1-5	???100	???105				????95
Embodiment 2-1				????33	????35	????31
	Embodiment 2-2	????30	????32				????29
Embodiment 2-3				????27	????28	????27
	Embodiment 3-1	????25	????30				????20
Embodiment 3-2				????90	????94	????86
	Embodiment 3-3	????30	????31				????29
Embodiment 3-4				????18	????20	????16
	Comparative example	????25	????30				????20

Table 2

	Residual core has or not because of deadweight and drops
		Embodiment 1-1	Not having deadweight drops
Embodiment 1-2	Not having deadweight drops
		Embodiment 1-3	Not having deadweight drops
Embodiment 1-4	Not having deadweight drops
		Embodiment 1-5	Not having deadweight drops
Embodiment 2-1	Not having deadweight drops
		Embodiment 2-2	Not having deadweight drops
Embodiment 2-3	Not having deadweight drops
		Embodiment 3-1	Not having deadweight drops
Embodiment 3-2	Not having deadweight drops
		Embodiment 3-3	Not having deadweight drops
Embodiment 3-4	Not having deadweight drops
		Comparative example	There is deadweight to drop

Claims (15)

1. propelling pencil; lead for retractable pencil is sent by the lead for retractable pencil guard block that is configured in the penholder front end by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder; it is characterized in that; aforementioned lead for retractable pencil guard block is to utilize laser beam to remove a part that is filled in the resin in the lead for retractable pencil guard block; form and form the hole in the longitudinal direction, keep lead for retractable pencil lightly by the inner surface in the hole on this length direction.

2. propelling pencil; lead for retractable pencil is sent by the lead for retractable pencil guard block that is configured in the penholder front end by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder; it is characterized in that; aforementioned lead for retractable pencil guard block is that the outside at least coated metal of bile duct forms in resin, keeps lead for retractable pencil lightly by the inner surface of bile duct in the resin.

3. propelling pencil; lead for retractable pencil is sent by the lead for retractable pencil guard block that is configured in the penholder front end by the forward-reverse that is configured in the lead for retractable pencil delivering mechanism in the penholder; it is characterized in that; aforementioned lead for retractable pencil guard block is the outside at least conductive film that forms of bile duct in resin; and coated metal forms on this conductive film, keeps lead for retractable pencil lightly by the inner surface of bile duct in the resin.

4. as the propelling pencil of one of claim 1 to 3, it is characterized in that resin is the resin with excellent oil resistance.

5. as the propelling pencil of one of claim 1 to 3, it is characterized in that resin is a silicone rubber.

6. as the propelling pencil of one of claim 1 to 3, it is characterized in that resin is a fluoro-dimethyl copolymerization silicone rubber.

7. as the propelling pencil of one of claim 1 to 3, it is characterized in that, resin be in Liquid Paraffin dipping when (70 ℃, 20 days) its weight rate be resin below 10%.

8. propelling pencil; in penholder, dispose the lead for retractable pencil delivering mechanism; and; the lead for retractable pencil guard block that inner surface has resin bed at least is configured in the penholder front end; it is characterized in that; aforementioned lead for retractable pencil guard block is to make it to take place plastic deformation by apply external force from the outside, makes the leading section inscribed circle diameter form less than the rearward end inscribed circle diameter.

9. propelling pencil as claimed in claim 8 is characterized in that, the pen core guard block is the part of the resin bed of leading section to be removed to form before plastic deformation.

10. as the propelling pencil of claim 2 or 3, it is characterized in that the cross section endoporus of bile duct is shaped as abnormity in the resin.

11. the propelling pencil as one of claim 1 to 10 is characterized in that, residual core can not drop because of deadweight.

12. the propelling pencil as one of claim 1 to 11 is characterized in that, the pen core confining force is 10g to 100g with respect to pen core by direction.

13. the propelling pencil as one of claim 1 to 11 is characterized in that, the pen core confining force is 35g to 100g with respect to pen core by direction.

14. have the manufacture method of lead for retractable pencil guard block of the propelling pencil of resin bed on the inner surface of a lead for retractable pencil guard block at least; it is characterized in that; at least comprise by apply external force from the outside making lead for retractable pencil guard block front end generation plastic deformation, make the plastic deformation operation of the inscribed circle diameter of lead for retractable pencil guard block leading section less than the inscribed circle diameter of non-variant part.

15. the manufacture method as the lead for retractable pencil guard block of the propelling pencil of claim 14 is characterized in that, before the plastic deformation operation, the part of the resin bed of pen core guard block leading section is removed.

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