CN102806613B - Mold for tire - Google Patents

Abstract

The present invention provides a kind of mold for tire, it is possible to also be able to after a procedure decompose even if firmly fixing block portion.Mold for tire (1) is formed with cavity surface (7) at inner surface, possesses: block portion (6), and this block portion (6) has the lamellar body of multiple tabulars arranged side by side；Keeper (5), this keeper (5) has the recess (27) that can assemble for this block portion (6)；And fixed mechanism, this fixed mechanism will be chimeric with this recess (27) in the way of can dismounting relative to recess (27) block portion (6) fix, this fixed mechanism has: the keyway formed along the direction of through each lamellar body on the surface of above-mentioned piece of portion (6) and the key (36,37) engaged with above-mentioned keyway of the inner surface being configured at above-mentioned recess (27), by key (36,37) and above-mentioned keyway card incompatible stoping block portion (6) freely being departed from from the inner surface of recess (27).

Description

Mold for tire

Technical field

The present invention relates to the mould used in the vulcanization process of tire.

Background technology

Mould is used in the vulcanization process of tire.Sheet mould and two halves mould can be at this vulcanization process Middle use.Green tire after preforming is put in mould by vulcanization process.This green tire is by mould In the die cavity surrounded with airbag (bladder) pressurized and heated.The rubber composition of green tire Flow in die cavity because of pressurization and heating.Rubber crosslinks reaction because of heating such that it is able to Obtain tire.If air residues between the cavity surface of mould and green tire when pressurization, then can be at wheel Tire surface forms defect (bare), and defect can make tire quality decline.General mould has row Pore.By this steam vent, air is discharged.

Die is for the tyre surface combination die (hereinafter referred to as combination die) of arc-shaped.Many by arrangement Individual combination die and form ring-type cavity surface.Combination die be by employ the gravitational casting of casting mold or Low pressure casting and obtain.Sometimes (so-called also by the hot investment casting employing metal casting mold Die casting) and obtain combination die.

An example as such mold for tire, it is known to Japanese Unexamined Patent Publication 2009-269245 Mould disclosed in publication.The assembling die of this mould is for block portion.This block portion possesses cavity surface.Should Cavity surface is formed by straight quarter.Block portion possesses base portion and is accommodated in this base portion and integration Core.This core is made up of multiple lamellar bodies.Each lamellar body possesses bolt hole.The plurality of lamellar body is by also Row arrangement, bolt is through is fixed on above-mentioned bolt hole.Thus, the plurality of lamellar body be integrated thus Form core.

Above-mentioned core is carried out integrated with base portion by insert casting.That is, core is inserted into The space part of casting mold.Motlten metal flows into this space part.This motlten metal solidifies and forms base portion, Thus formed by base portion and the block portion constituted in the core of base portion by insert casting.This block portion is implemented Machining and surface formed cavity surface.

Core based on insert casting is integrated with base portion, and its casting itself needs a large amount of man-hours. Covered by foundry goods due to core and fix, therefore cannot be decomposed after manufacturing block portion.Therefore, In order to by being piled up in lamellar body soil release to each other, need special heat treatment.

Propose to have and need not casting process and block portion is assemblied in the combination die of the keeper as base portion (with reference to Japanese Unexamined Patent Publication 2009-023231 publication).On this combination die, block portion be pre-formed Recess in keeper is fitted together to.Formed on any number of lamellar bodies in the stacking lamellar body constituting block portion There is bolt hole.It is formed on keeper and in the position corresponding with the bolt hole of stacking lamellar body The through hole that bolt is inserted.Utilize bolt to pass this bolt hole and through hole and guarantor is fixed in block portion Gripping member.

In the case of block portion is bolted and is fixed on keeper, bolt is screwed with lamellar body.Keep The forming position of the bolt through hole of part is different because of the number of lamellar body.In the case of lamellar body is thin, Owing to must use the bolt of path, therefore block portion reduces relative to the fixing intensity of keeper.

Patent documentation 1: Japanese Unexamined Patent Publication 2009-269245 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2009-023231 publication

Summary of the invention

The present invention completes to solve such problem, its object is to provide a kind of tire By mould and the manufacture method of this mold for tire, for this mold for tire, regardless of lamellar body Stacking number how, block portion can be firmly fixed at keeper, and need not loaded down with trivial details Casting process, and can decompose after fabrication.

Mold for tire involved in the present invention, is formed with cavity surface at inner surface, this tire mould Tool possesses: block portion, and this block portion has the lamellar body of multiple tabulars arranged side by side；Keeper, this keeper Having can be for the recess of this block portion assembling；And fixed mechanism, this fixed mechanism is with relative to upper State the mode that recess can dismount to be fixed in the block portion chimeric with above-mentioned recess,

Above-mentioned fixed mechanism has: on the surface in above-mentioned piece of portion along the through direction of through each lamellar body The slot formed and the engaging engaged with above-mentioned slot of the inner surface being configured at above-mentioned recess Ridge,

By slot is engaged ridge engaging with above-mentioned, thus stoping block portion is from the inner surface of recess Freely depart from.

According to such structure, it is not necessary to casting process, and then after mould completes, and i.e. Make also to be able to decompose this mould after it uses.Further, when block portion is assemblied in keeper, And the non-immediate lamellar body that is screwed on by bolt etc., but via engaging ridge, block portion is assemblied in guarantor Gripping member.Therefore, regardless of number and the thickness of lamellar body, block portion can be assemblied in keeper. Make each lamellar body assembling even intensity relative to keeper.

Above-mentioned engaging ridge can be made up of the key that can dismount relative to the inner surface of above-mentioned recess.

Preferably, above-mentioned piece of portion is made up of multiple unit as small blocks, and is configured to: many Individual said units is fitted in above-mentioned recess when mutually contiguity, and adjacent unit is each other Contact surface is formed with the holding section fastened mutually, and the unit of an adjacent side is fixed in recess, by This can stop the unit to the opposing party engaged with the unit of one side to depart from from recess.

Preferably, possesses the first pad being sandwiched between the above-mentioned lamellar body of adjacent two, by upper State the first pad and form the first slit between two adjacent above-mentioned lamellar bodies.

Preferably, possesses the second pad being sandwiched between the above-mentioned lamellar body of adjacent two, by upper State the second pad and form the second slit between two adjacent above-mentioned lamellar bodies.

The manufacture method of mold for tire involved in the present invention, including following operation: by multiple plates The lamellar body mother metal of shape is fixed under juxtaposition and forms the operation of block portion mother metal；By cutting Processing and form the operation of recess on keeper mother metal, this recess is used for assembling block portion mother metal；? The operation of slot is formed on above-mentioned piece of portion's mother metal；Prepare to be configured at the energy of the inner surface of above-mentioned recess The operation of enough engaging ridges engaged with above-mentioned slot；The shape of slot it is sticked in engaging ridge Under state, above-mentioned piece of portion's mother metal is assemblied in the recess of keeper mother metal and constitutes the work of combination die mother metal Sequence；Combinations thereof mould mother metal is implemented machining and forms the combination die formation process of cavity surface； And connect the mould formation process of multiple combinations thereof mould.

Preferably, formed above-mentioned piece of portion's mother metal operation in, by by pad deployment in adjacent Lamellar body mother metal forms slit each other, in combinations thereof mould formation process, makes above-mentioned slit It is exposed to above-mentioned cavity surface.

Tire manufacturing method involved in the present invention, including following operation: obtained by preforming The operation of green tire；Above-mentioned green tire is put into the operation of the mould being formed with cavity surface on an internal surface； And to the pressurization of above-mentioned green tire and the operation of heating in above-mentioned mould, above-mentioned mould possesses: block portion, This block portion has the lamellar body of multiple tabulars arranged side by side；Keeper, this keeper has can supply this block The recess of portion's assembling；And fixed mechanism, this fixed mechanism is can dismount relative to above-mentioned recess Mode the block portion chimeric with this recess is fixed,

Above-mentioned fixed mechanism has: above-mentioned piece of portion surface along through each lamellar body direction formed Slot and be configured at above-mentioned recess inner surface the engaging engaged with above-mentioned slot dash forward Bar,

By slot is engaged ridge engaging with above-mentioned, thus stoping block portion is from the inner surface of recess Freely depart from.

Preferably, above-mentioned pad is clamped each other at above-mentioned tabular lamellar body.

In mould involved in the present invention, it is not necessary to casting process just can be to the block portion with lamellar body Firmly hold, even and if then also being able to decompose this mould after it uses.Further, by block When base portion is fixed in portion, it is not necessary to directly bolt is screwed in sheet internal.

Accompanying drawing explanation

Fig. 1 is the part illustrating the mold for tire involved by an embodiment of the invention Top view.

Fig. 2 is the sectional view of the II-II line along Fig. 1.

Fig. 3 is the axonometric chart of the combination die of the mould illustrating Fig. 1.

Fig. 4 is the axonometric chart in the block portion of the combination die illustrating Fig. 3.

Fig. 5 is the sectional view of the V-V line along Fig. 3.

Fig. 6 is the sectional view of the line VI--VI along Fig. 3.

Fig. 7 is the sectional view of the VII-VII line along Fig. 3.

Fig. 8 is the sectional view of the VIII-VIII line along Fig. 3.

Fig. 9 (a) is the sectional elevation of the example illustrating the second key and the second keyway, Fig. 9 (b) Being the sectional elevation of other example illustrating the second key and the second keyway, Fig. 9 (c) is to illustrate the 3rd The sectional elevation of one example of key and key-groove,

Figure 10 (a) is the front view of the example illustrating unit holding section each other, figure 10(b) it is the front view of other example illustrating unit holding section each other.

Figure 11 is the axonometric chart before the mother metal assembling of the combination die of Fig. 3.

Figure 12 is the axonometric chart after the mother metal assembling of Figure 11.

Figure 13 is to illustrate the sectional view of each state before and after the mother metal cutting of Figure 12.

Figure 14 is the solid of the combination die illustrating the mould involved by other embodiments of the present invention Figure.

Figure 15 is the axonometric chart before the mother metal assembling of the combination die of Figure 14.

Description of reference numerals: 1...(tire) mould；2,61... combination die；5、62... Keeper；6,63... block portion；7,65... cavity surface；10, the 73... back side；11,60... typing Face；13,66... end unit；14,67... temporary location；15,17,68... end lamellar body； 16,18, lamellar body in the middle of 69...；20... bolt；23... the first pad；24... the second pad；25... First slit；26... the second slit；27,64... recess；36... the first key；37... the second key； 46B... the second plane；51,77... keeper mother metal；58,86... block portion mother metal；59... combine Mould mother metal；72... the 3rd slit；74... the 3rd key.

Detailed description of the invention

Hereinafter, with reference to suitable accompanying drawing and based on preferred embodiment the present invention being carried out specifically Bright.

Fig. 1 is to illustrate the mold for tire involved by an embodiment of the invention (hereinafter referred to as For mould) top view of the part of 1.Fig. 2 is the amplification view of the II-II line along Fig. 1. This mould 1 possesses multiple combination die 2, upper and lower pair of sidewall plate 3 and upper and lower pair of bead ring 4.The flat shape of combination die 2 is essentially arc-shaped.Multiple combination dies 2 connect to ring-type. The quantity of combination die 2 is usually more than 3 and less than 20.Sidewall plate 3 and bead ring 4 are real It is ring-type in matter.This mould 1 is so-called " sheet mould ".In fig. 2, label R represents green tire.

Fig. 3 is the axonometric chart of the combination die 2 of the mould 1 illustrating Fig. 1.Arrow X table in figure 3 Showing that the radial direction of tire, arrow Y represent axial (width) of tire, arrow Z represents tire Circumference (rotation direction).This method for expressing in other accompanying drawing too.This combination die 2 by Keeper 5 and block portion 6 are constituted.Keeper 5 is made up of steel or aluminium alloy.Block portion 6 is by described later Multiple lamellar bodies are constituted.Block portion 6 is assemblied in the recess 27 of keeper 5.

Block portion 6 possesses cavity surface 7.This cavity surface 7 possesses protuberance 8 and recess 9.This protuberance 8 Corresponding with the ditch of the tyre surface of tire.Recess 9 is corresponding with the block portion of the tyre surface of tire.Utilize this protuberance 8 and recess 9 on tire, form tread contour.The shape of protuberance 8 and recess 9 is according to tyre surface flower Stricture of vagina suitably determines.It addition, in fig. 2, the diagram of protuberance 8 and recess 9 is omitted.

Fig. 4 is the axonometric chart in the block portion 6 of the combination die 2 illustrating Fig. 3, and Fig. 5 is along Fig. 3 The sectional view of V-V line, Fig. 6 is the sectional view of the line VI--VI along Fig. 3, and Fig. 7 is along figure The sectional view of the VII-VII line of 3, Fig. 8 is the sectional view of the VIII-VIII line along Fig. 3.As Shown in Fig. 4, block portion 6 also has 10, two, back side typing while possessing above-mentioned cavity surface 7 Face 11 and upper and lower end face 12.The back side 10 is opposed with cavity surface 7.Block portion 6 is by 4 fritters Body (unit) 13,14 is constituted.These unit be in upper and lower side two end units 13, And two temporary locations 14 between end unit 13.

As shown in Figure 4, each end unit 13 has two first end lamellar bodies 15 and configuration In these first end lamellar bodies 15 multiple first middle lamellar bodies 16 each other.Each temporary location 14 have two the second end lamellar bodies 17 and be configured at these the second end lamellar bodies 17 each other it Between multiple second middle lamellar bodies 18.Each lamellar body 15,16,17,18 is plate-shaped and is closed by aluminum Gold is constituted.All lamellar body 15,16,17,18 the most circumferentially Z arrangements.

It is formed with bolt hole 19 through on circumference Z in each unit 13,14.Bolt hole 19 It is formed at the mutual of the first end lamellar body 15 constituting each end unit 13 and the first middle lamellar body 16 Consistent position.Constituting the second end lamellar body 17 and second intermediate of each temporary location 14 It is formed with bolt hole 19 on body 18 and in the most consistent position.Bolt 20 is inserted through this bolt Hole 19.Nut 21 is screwed on the two ends of each bolt 20.Tap bolt can also be used.? The bolt hole 19 of each end lamellar body 15,17 is formed with the counterbore 22 for receiving nut 21.Cause This, bolt 20 and nut 21 do not highlight from the end face 12 of each end lamellar body 15,17.At this In embodiment, whole lamellar bodies 15,16,17,18 of each unit 13,14 are all by two bolts 20 and nut 21 fastening link.In the present invention, the number of bolt is not defined.

As shown in Figures 7 and 8, the sheet that the first pad 23 is adjacent in being sandwiched in each unit 13,14 Body 15,16,17,18 is each other.By fastening above-mentioned nut 21, make lamellar body 15,16, 17,18 first pad 23 is extruded.It is provided with for bolt 20 through at the first pad 23 Not shown opening.The first pad 23 can be dismantled between lamellar body by extracting bolt 20.The One pad 23 can be only fitted to avoid the position of bolt 20.Can also arrange at the first pad 23 For avoiding the not shown otch of bolt 20, replace the opening through for bolt 20 with this. Can also be provided for avoiding the not shown otch of key 36,37 described later at the first pad 23.

As shown in Figures 5 and 6, the second pad 24 is sandwiched in the adjacent unit 13,14 in block portion 6 Each other.Preferably, the second pad 24 between end unit 13 and temporary location 14, extremely It is clipped on the second plane 46B as holding section described later less each other.Therefore, it is possible to keep making Function for holding section.First pad 23 and the second pad 24 by rustless steel such have resistance to Corrosivity, the metal of thermostability are constituted.Each pad 23,24 is lamellar.Pad is on market The sales item circulated extensively, is preferred according to the viewpoint that cost reduces.As having bolt 20 First pad 23 of through opening, the preferably packing ring etc. of bolt and nut.This embodiment party In formula, the pad using thickness to be more than 0.01mm and below 1.0mm.Thus, to block After portion 6 carries out machining and forms tread contour, it is achieved that below 0.12mm's is small The exhaust gear of slit-shaped.

The first pad 23 is utilized to form first each other at adjacent lamellar body 15,16,17,18 Slit 25(Fig. 7, Fig. 8).First slit 25 radially X and axially Y extend.First slit 25 are not exposed to die joint 11(Fig. 3).First slit 25 cavity surface 7 from block portion 6 arrives the back of the body Face 10.The second pad 24 is utilized to form the second slit each other at adjacent unit 13,14 26(Fig. 5, Fig. 6).Second slit 26 radially X and circumference Z extends.Second slit 26 It is exposed to die joint 11(Fig. 3).Second slit 26 also arrives the back side 10 from cavity surface 7.Therefore, First slit 25 and the second slit 26 is equal and gap 32 between keeper 5 described later and block portion 6 Connection.

As shown in Figures 5 and 6, block portion 6 is rear after chimeric with the recess 27 of keeper 5 The key 36,37 stated is fixed on recess 27.Utilize key 36,37 stoping block portion 6 with keeper 5 Vertical direction, the bottom surface 30 of recess 27 on freely depart from.Recess 27 is formed by machining. This recess 27 is divided by the inner surface of bottom surface 30 and opposed pairs sidewall 31 and forms.Recess 27 is substantially the tunnel-like of rectangle in cross section.Recess 27 is in the shape with the form fit in block portion 6 Shape.The back side 10 in block portion 6 is covered by the bottom surface 30 of recess 27, and the sidewall 31 of recess 27 will Upper and lower each end face (lateral surface of each end unit 13) 12 in block portion 6 covers.Block portion 6 Die joint 11 exposes (Fig. 3).The bottom surface 30 of recess 27 and the block portion 6 being embedded in recess 27 The back side 10 form small gap 32 and abut.The inner surface of the sidewall 31 of recess 27 is with embedding Upper and lower each end face 12 in the block portion 6 after conjunction forms small gap 32 and abuts.Such as can These gaps are formed by forming raised line at the outer surface in the inner surface of recess 27 and/or block portion 6 32。

As shown in Figures 4 to 6, the upper and lower each end face 12 in block portion 6 is formed with the first keyway 33.It is formed with the second keyway 34 at the back side (back side 35 of each temporary location 14) 10 in block portion 6. All of keyway 33,34 the most circumferentially Z extends.First key 36 is loaded into the first keyway 33, Second key 37 is loaded into the second keyway 34.First keyway 33 and the first key 36 are respectively provided with rectangle Shape of cross section.Second keyway 34 and the second key 37 are respectively provided with trapezoidal shape of cross section.? It is formed with multiple on the face opposed with above-mentioned sidewall 31 of one key 36 the most at spaced intervals Pin-and-hole 38 with the end.On the face opposed with above-mentioned bottom surface 30 of the second key 37 along its length every Open and alternately formed multiple screwed hole 39.Female thread is formed at this screwed hole 39.Screwed hole 39 In the present embodiment by through for the second key 37.In the present invention, it is also possible to the most through.

Screwed hole 40 runs through the sidewall 31 of keeper 5 with above-mentioned first key 36 each pin-and-hole 38 consistent positions.Screwed hole 40 is formed as circumferentially Z interval.Steady pin 41 screw thread It is fixed on this screwed hole 40.Except the specific length part of front end on the outer peripheral face of steady pin 41 In addition, it is formed with external screw thread.Using the specific length part of the front end of steady pin 41 as on having State the pin portion 42 of externally threaded bottom diameter or the external diameter less than bottom diameter.At steady pin 41 Rear end is formed with the slot 28 for rotation process based on screwdriver.By by steady pin 41 Unscrew or extract, it is possible to make the first key 36 depart from from recess 27 and take out end unit 13.Fixing Pin 41 is screwed on screwed hole 40, and thus this pin portion 42 engages with the pin-and-hole 38 of the first key 36. Thus, each end unit 13 is located in recess 27.As it was previously stated, the first keyway 33 and first The cross section of key 36 is all rectangle.Therefore, even if steady pin 41 is screwed on screwed hole 40, If temporary location 14 is not fixed in recess 27, then end unit 13 also is able to recess 27 Inner side displacement.Steady pin 41 is when being screwed on screwed hole 40, submerges in its rear end In screwed hole 40.As it is shown in figure 5, be formed for the guarantor that is screwed at the back side of keeper 5 The screwed hole 29 that the lifting bolt held etc. use.This screwed hole 29 is non-through internal in recess 27. In figure 3 the diagram of this screwed hole 29 is omitted.

As shown in Fig. 3, Fig. 6 and Fig. 8, on the bottom surface 30 of keeper 5 with above-mentioned second key The position that each screwed hole 39 of 37 is consistent, is formed with the band ladder through hole of bolt member 44 43.The bolt member 44 of tap bolt etc. is screwed on by this band ladder through hole 43 The above-mentioned screwed hole 39 of two keys 37.Thus, the second key 37 is fixed in recess 27.Second key The position 37b gone to the bottom short for end 37a on the ratio of the trapezoid cross section of 37 is fixed on the bottom surface of recess 27 30.Its result, temporary location 14 is fixed in the bottom surface 30 of recess 27.Bolt member 44 exists Under the state of the screwed hole 39 being screwed on the second key 37, submerge band ladder through hole in its rear end In 43.

Although each cross section of the second keyway 34 and the second key 37 is trapezoidal in the present embodiment, But it is not limited to trapezoidal in the present invention.Fig. 9 passes the imperial examinations at the provincial level and is illustrated the second keyway and the second key Other shape of cross section.Fig. 9 (a) shows the second keyway 34A and second of T-shaped Key 37A, Fig. 9 (b) show the of the T-shaped that shape distortion is arc-shaped at two ends, left and right Two keyway 34B and the second key 37B, Fig. 9 (c) show that the end is deformed into the trapezoidal of circular arc Second keyway 34C and the second keyway 37C.In the present invention, the second keyway and each horizontal stroke of the second key Cross sectional shape is not limited to above-mentioned shape.As the second keyway and each cross section shape of the second key Shape, preferably such as the trapezoidal shape with rake.This is because when utilizing bolt member 44 Schedule the second keying be prevented from rocking during the bottom surface of recess 27.

As shown in Figures 3 to 6, the face opposite one another of two temporary locations 14, by with recess The substantially vertical plane 45 in the bottom surface 30 of 27 is constituted.Temporary location 14 and end unit 13 Face opposite one another be made up of two planes 46A, the 46B being angled relative to each other.Specifically, should Two planes 46A, 46B be from cavity surface 7 rearwardly 10 extend with above-mentioned bottom surface 30 substantially The first vertical plane 46A and from cavity surface 7 rearwardly 10 extend from this first plane 46A rolls the second oblique plane 46B to temporary location 14.This second plane 46B constitutes end Unit 13 and the holding section of temporary location 14.When the end unit 13 including the first key 36 is consolidated In rationed marketing 41 is positioned recess 27 and include that the temporary location 14 of the second key 37 is bolted parts During the bottom surface 30 that 44 are fixed on recess 27, above-mentioned holding section is utilized also to be fixed by end unit 13 In recess 27.By the abutting each other of the second plane 46B relative to temporary location 14, End unit 13 is prevented from the displacement towards the direction vertical with bottom surface 30.Further, if both ends are single Unit 13 is pressed to inner side from the upper and lower side of keeper 5 by steady pin 41, then both ends unit 13 Clamp temporary location 14, thus play the effect of fixing each unit.

As it is shown in figure 5, alignment pin 47 preferred fit is in the end unit 13 of assembling in recess 27 And between temporary location 14 and temporary location 14 each other.Assemble this alignment pin 47 Purpose is, prevents each unit 13,14 relative displacement each other, particularly prevents tire Relative displacement on circumference Z.Alignment pin 47 is assemblied in pin-and-hole, and this pin-and-hole is formed at adjacent list The opposed locations of the opposed lamellar body 15,16,17,18 of unit 13,14.Further, in order to more Reliably carry out the location relative to keeper 5, the block portion 6, it is possible to use alignment pin 50.This location Pin 50 is such as assemblied in the bottom surface 30 of the back side of temporary location 14 and recess 27 in correspondence with each other Position formed pin-and-hole in.In the present invention, it is not limited to pin 47,50 as positioning unit. For example, it may be the bolt of bullhead.This bolt is the portion about the half of its length Divide and be formed with external screw thread.Parts the side being mutually positioned form screwed hole, are formed the opposing party Pin-and-hole.This alignment pin is screwed on the screwed hole of the parts of a side in advance.

In the present embodiment, as the holding section of end unit 13 with temporary location 14, use Second plane 46B of above-mentioned inclination.But, it is not limited to such structure in the present invention. Figure 10 passes the imperial examinations at the provincial level other shape being illustrated end unit 13 with the holding section of temporary location 14. Figure 10 (a) shows the holding section being made up of the recess 48A and protuberance 48B of rectangle, Figure 10 B () shows the holding section being made up of substantially semi-circular recess 49A and protuberance 49B.

While with reference to Figure 11 and Figure 12 while the manufacture method of combination die 2 is briefly described. First, the mother metal (referred to as keeper mother metal) of keeper 5, the end of end unit 13 are got out Lamellar body 15 mother metal (referred to as first end lamellar body mother metal) 52, the middle lamellar body of end unit 13 16 use mother metal (the referred to as first middle lamellar body mother metal) 53, the end lamellar body 17 of temporary location 14 With mother metal (referred to as the second end lamellar body mother metal) 54 and the middle lamellar body 18 of temporary location 14 With mother metal (the referred to as second middle lamellar body mother metal) 55.Keeper mother metal 59 is by reflectal Be formed as rectangular-shaped and then formed recess 27 by machining structure.Forming recess While 27, formed across bottom surface 30 opposed pairs sidewall 31.Above-mentioned screwed hole 40 is at this Be formed as penetrating into recess 27 from the outside of sidewall 31 on sidewall 31 internal.With from keeper 5 The back side penetrate into the mode within recess 27 and form above-mentioned band ladder through hole 43.At keeper The back side of 5 is formed with the above-mentioned screwed hole 29(figure for the lifting bolt etc. kept that is screwed 5) the not shown pin-and-hole and for location.This positioning pin hole is non-through in recess 27 Portion.

Lamellar body mother metal 52,53,54,55 is tabular.Although it is female at first and second end lamellar body Material 52,54 is formed with bolt hole 19 and counterbore 22, but owing to this is explained, Thus illustrated to omit herein.As shown in figure 11, join between first end lamellar body mother metal 52 Put multiple first middle lamellar body mother metal 53, between the second end lamellar body mother metal 54, configure multiple Two middle lamellar body mother metals 55.The first pad is configured between lamellar body mother metal 52,53,54,55. First end lamellar body mother metal the 52, first middle lamellar body mother metal 53 and the first pad are stacked.Bolt 20 are inserted through bolt hole, and nut 21 is tightened.Thus constitute two end unit mother metals 56.The Two end lamellar body mother metal the 54, second middle lamellar body mother metals 55 and the first pad are stacked.Bolt 20 Being inserted through bolt hole, nut 21 is tightened.Thus constitute two temporary location mother metals 57.

First key 36 with rectangular cross section and second key with trapezoidal cross-section are prepared 37.First key 36 defines multiple above-mentioned pin-and-hole 38 along its length.At the second key Multiple above-mentioned screwed hole is defined along its length on 37.First keyway 33 and the second keyway 34 are formed along the direction corresponding for circumferential Z with tire relative to each end unit mother metal 56.Second Keyway 34 is formed along the direction corresponding for circumferential Z with tire relative to each temporary location mother metal 57. First key 36 loads the first keyway 33 of end unit mother metal 56, and the second key 37 loads the second key Groove 34.Second key 37 loads the second keyway 34 of temporary location mother metal 57.

Above-mentioned first plane 46A and the second plane 46B are formed at end unit mother metal 56 and centre The mutual opposed faces of unit mother metal 57.Female with temporary location at end unit mother metal 56 respectively Between material 57 and temporary location mother metal 57 each other, clamp the second pad 24, and excellent Choose to install and join alignment pin 47.So, 4 unit mother metals 56,57 are integrated and constitute block portion mother Material 58.This block portion mother metal 58 is formed as rectangular-shaped.

As shown in figure 12, this block portion mother metal 58 is chimeric with the recess 27 of above-mentioned keeper mother metal 51. Steady pin 41 screws in the screwed hole 40 of the sidewall 31 of keeper mother metal 51.Bolt member 44 passes through The band ladder through hole 43 of the bottom surface 30 of keeper mother metal 51 and be screwed entrance the second key 37 Screwed hole 39.Thus, block portion mother metal 58 is fixed on keeper mother metal 51 and constitutes combination die mother Material 59.When block portion mother metal 58 is assemblied in recess 27, bolt member 44 and steady pin 41 The most directly it is screwed on lamellar body mother metal 52,53,54,55.Block portion mother metal 58 via key 36, 37 and be assemblied in recess 27.Therefore, the no matter number of lamellar body mother metal 52,53,54,55 and thickness Degree how, all can utilize uniform bed knife that block portion mother metal 58 is assemblied in recess 27.Make Each lamellar body mother metal 52,53,54,55 is relative to the assembling even intensity of keeper mother metal 51. The both ends of the surface of combination die mother metal 59 illustrate with double dot dash line, and cut with being inclined by.

As shown in figure 13, for combination die mother metal 59, utilize machining only by hatched parts Eliminate.It is consequently formed combination die (white portion in figure) 2.Above-mentioned steady pin 41 is formed as It is not on cuing open by its rear end under the state of the screwed hole 40 entering keeper mother metal 51 that is screwed Length in excision extension shown in upper thread.The type possessing ridge design is formed by this machining Face, chamber 7.The most directly carve ridge design.Typical machining is based on instrument cutting Cut.High-energy-density processing can also be utilized to carry out machining.Tool as high-energy-density processing Style, it is possible to enumerate Electrolyzed Processing, electro-discharge machining, the processing of line discharge cutting, Laser Processing and electricity Sub-Shu Jiagong.Owing to directly carving ridge design, therefore the degree of freedom of the shape of this ridge design is high. The dimensional accuracy of this ridge design is high.It is obtained in that combination die 2 by above machining.

In the tire manufacturing method employing this mould 1, it is obtained in that green tire by preforming. This green tire is put into mould 1 airbag shrinks when mould 1 is opened.In this stage, raw The rubber composition of tire is in uncrosslinked state.By fastening, airbag expands mould 1.Green tire is by gas Bag presses and pressurized to the cavity surface 7 of mould 1.Fig. 2 shows the green tire R of this state.With This simultaneously, green tire is heated.Rubber composition flows because of pressurization and heating.Rubber is because of heating Produce cross-linking reaction thus obtain tire.Pressurized and heating the operation of green tire is referred to as vulcanizing work Sequence.

As it has been described above, the first slit 25 and the second slit 26 be exposed independent from cavity surface 7(Fig. 5, Fig. 6, Fig. 7 and Fig. 8).In vulcanization process, the air between green tire and cavity surface 7 is by the One slit 25 and the second slit 26 and move.Second slit 26 is also exposed to die joint 11.Empty Gas arrives die joint 11 and is discharged.Even being in the air in the region away from die joint 11, It also is able to be moved on die joint 11 by the first slit 25 and the second slit 26.Due to tire The first slit 25 of width (axial Y) be formed multiple, therefore improve at tire The air being laminated into skewed green tire in rotation direction (circumference Z) discharges effect.By first Slit 25 and bolt hole 19 also are able to air-out.Prevented by movement and the discharge of air Defect.Even if being not provided with steam vent in this mould 1 also to be able to air-out fully.By not There is the mould 1 of steam vent, it is possible to obtain the tire not having projecting rubber.This tire is in outward appearance and just Phase earth-catching property aspect performance excellence.

In the embodiment described above, in order to unit 13,14 being assemblied in keeper 5 and Employ key 36,37.The present invention is not limited to such structure.Such as can be at keeper The bottom surface 30 of the recess 27 of 5 and the inner surface of sidewall 31 are formed and above-mentioned key 36,37 shape phase Same ridge, replaces above-mentioned key 36,37 with this.Ridge is formed while forming recess 27. There is the slot of the shape of cross section identical with these ridges (with above-mentioned keyway 33,34 phase With) it is formed at each unit 13,14.In this case, it is not necessary to for by above-mentioned key 36, 37 position and are fixed on screwed hole 40 and the band ladder through hole 43 of keeper 5.Each unit 13, 14 recesses 27 being assemblied in keeper 5 in the way of above-mentioned ridge is inserted through this slot successively. Or, it is positioned after pin 47 positions and form block portion 6 at whole unit 13,14, with above-mentioned Ridge is inserted through the mode of slot and is assemblied in the recess 27 of keeper 5.

Figure 14 shows other combination die 61.Figure 15 shows the manufacture of this combination die 61 A part for operation.This combination die 61 is made up of keeper 62 and block portion 63.Keeper 62 by Steel or aluminium alloy are constituted.Block portion 63 is assemblied in the recess 64 of keeper 62.This block portion 63 assembles Become relative to recess 64 from combinations of the above mould 2(Fig. 3～Figure 13) block portion 6 posture towards The direction of half-twist in the face parallel with the bottom surface of recess 64.Block portion 63 with keeper After the recess 64 of 62 is fitted together to, it is fixed in recess 64 by the 3rd key 74 described later.Block Portion 63 possesses cavity surface 65.Due to this cavity surface 65 substantially with reference to the die cavity illustrated by Fig. 3 Face 7 is identical, thus is illustrated to omit herein.

As shown in figure 15, block portion 63 is made up of 3 unit 66,67.These unit are in Two end units 66 of the left and right end of recess 64 and one between end unit 66 Temporary location.As shown in figure 14, no matter it is which unit 66,67 all has two the 3rd ends Lamellar body 68 and be configured at these the 3rd end lamellar bodies 68 multiple 3rd intermediates each other Body 69.Each lamellar body 68,69 is formed by the aluminium alloy of tabular.Adjacent in each unit 66,67 Lamellar body 68,69 each other, accompanies the not shown pad identical with the first above-mentioned pad 23. Each unit 66,67 utilize two bolts 20 and nut 21 are fastened by whole lamellar bodies 68,69 Link.

Above-mentioned pad is utilized to form the 3rd slit 72 each other at adjacent lamellar body 68,69. 3rd slit 72 radially X and circumference Z extends, and the 3rd slit 72 is exposed to dividing of block portion 63 Profile 60(Figure 14).3rd slit 72 arrives the not shown back of the body from the cavity surface 65 in block portion 63 Face.3rd slit 72 connects with the gap between keeper 62 and block portion 63.

Can be formed at the two side 82 of keeper 62 on width Y at this combination die 61 Not shown tunnel that is through with whole lamellar bodies 68,69 and that circulate for air.And then, can To be formed and above-mentioned tunnel at the upper surface of keeper 62 and lower surface (outer surface of sidewall 82) The not shown exhaust line of the channel-shaped of connection.And, it is also possible to formed and lamellar body 68,69 is not passed through Logical tunnel (not shown).As long as by between each unit 66,67 and the bottom surface of recess 64 The upper surface of gap (gap between keeper 62 and block portion 63) and keeper 62 with under The tunnel of surface connection.And then, can be in the upper surface of keeper 62 and lower surface (side The outer surface of wall 82) form the not shown exhaust line of channel-shaped connected with this tunnel.

It is formed with key-groove 73 at the back side of each unit 66,67.3rd key 74 loads each 3rd Keyway 73.Key-groove 73 and the 3rd key 74 are respectively provided with trapezoidal shape of cross section.At the 3rd key On the face that the bottom surface with above-mentioned recess 64 of 74 is opposed, it is formed with interval along its length Multiple not shown screwed holes.Female thread is formed at this screwed hole.

The position that each screwed hole with above-mentioned 3rd key 74 on the bottom surface of above-mentioned recess 64 is consistent It is formed with band ladder through hole 76(Figure 15).The diagram of band ladder through hole 76 is saved by Figure 14 Slightly.The not shown bolt member such as tap bolt is screwed on this band ladder through hole 76.Bolt Parts are screwed by the above-mentioned screwed hole of band ladder through hole 76 with the 3rd key 74.Thus, 3rd key 74 of trapezoid cross section is fixed on recess 64.Its result, each unit 66,67 is fixed on recessed The bottom surface in portion 64.Not shown bolt member is at the shape of the screwed hole being screwed on the 3rd key 74 Under state, submerge in band ladder through hole 76 in its rear end.Any unit 66,67 and any 3rd key 74 Y extensions the most vertically.Be formed as whole lamellar body 68,69 to arrange on axial Y.

With reference to Figure 15, the manufacture method of combination die 61 is carried out simple illustration.For scheming with reference The scope that the manufacture method of the combination die 2 illustrated by 11～Figure 13 is common, omits the description.First, Prepare in the 3rd end lamellar body mother metal 78 and the 3rd of keeper mother metal 77, each unit 66,67 Between lamellar body mother metal 79.The pair of sidewalls 82 of the both sides up and down of recess 64 and recess 64 is formed at guarantor Gripping member mother metal 77.In the way of the back side from keeper mother metal 77 starts to run through recess 64 inside Form above-mentioned band ladder through hole 76.

Bolt hole is formed at whole lamellar body mother metals 78,79, and then at the 3rd end lamellar body mother metal 78 Form counterbore 22.Pad deployment is in adjacent lamellar body mother metal 78,79 each other.Female at lamellar body On material 78,79, bolt 20 is inserted through bolt hole, and nut is fastened.Thus, lamellar body mother metal quilt Fastening links, thus completes two end unit mother metals 83 and a temporary location mother metal 84. Opposed faces at end unit mother metal 83 with temporary location mother metal 84 forms holding section respectively.That is, As shown in figure 15, mutual opposed faces forms the upper surface with each unit mother metal 83,84 The first vertical plane 46A and rolling to temporary location mother metal 84 from this first plane 46A The second oblique plane 46B.End unit mother metal 83 is configured at the left and right of temporary location mother metal 84 Both sides.Pad deployment is in unit mother metal 83,84 each other.Utilize this pad at unit mother metal 83,84 the 4th slit 85 is formed each other.4th slit 85 radially X and width Y Extend.Constitute block portion mother metal 86 in like fashion.

As shown in figure 15, above-mentioned piece of portion's mother metal 86 is embedding with the recess 64 of above-mentioned keeper mother metal 77 Close.In this case, block portion mother metal 86 is with the length direction the (the 3rd of each unit mother metal 83,84 The length direction of key 74) (axial with the opposed direction of the pair of sidewalls 82 of keeper mother metal 77 Y) consistent mode is chimeric with recess 64.This block portion mother metal 86 is parallel with the bottom surface of recess 64 Face in towards the direction towards half-twist from the block portion mother metal 58 shown in Figure 11 and Figure 12. Not shown bolt member is screwed on by the band ladder through hole 76 of keeper mother metal 77 The not shown screwed hole of the 3rd key 74.Thus, block portion mother metal 86 is fixed on keeper mother metal 77 Thus constitute combination die mother metal.Then, this combination die mother metal is implemented and reference Figure 12 and Figure 13 The process that illustrated combination die mother metal 59 is identical, thus complete combination die 61.

As previously described, because the 3rd slit 72 and the 4th slit 85 expose in cavity surface 65, Therefore in vulcanization process air between green tire and cavity surface 65 by the 3rd slit 72 and the 4th Slit 85 moves.3rd slit 72 is also exposed to die joint 11(Figure 14).Air arrives typing Face 11 and then be discharged.Even being in the air in the region away from die joint 11, it is also possible to logical Cross the 3rd slit 72 and the 4th slit 85 moves on die joint 11.Even if by the 3rd slit 72 and bolt hole 19 also be able to air-out.Defect is prevented with ejecting by the movement of air. Even if being not provided with steam vent in this mould 1 also to be able to air-out fully.By not having row The mould 1 of pore, it is possible to obtain the tire not having projecting rubber.This tire grabs ground in outward appearance and initial stage Aspect of performance performance excellence.

Ridge design can not be formed in cavity surface 65.Utilize the mould energy without ridge design Enough obtain racing slick and plain weave tire.Even this racing slick and plain weave tire also are able to suppression Projecting rubber.The surface of this plain weave tire is cut and forms ridge design.Owing to projecting rubber is few, because of The cutting of this this plain weave tire is prone to carry out.

If using mould 1 repeatedly, then deposit can be attached to cavity surface 7,65.This deposit The quality of tire can be caused damage.Thus must be driven off deposit.In order to remove deposit, make Key 36,37,74 departs from from keeper 5,62, and from the recess 27,64 of keeper 5,62 Take out block portion 6,63.The bolt 20 it follows that choose from block portion 6,63 and be broken down into each Body.In the case of the block portion 6,63 being made up of multiple unit, first block portion 6,63 is decomposed Become multiple unit.It follows that choose bolt 20 from each unit and resolve into each lamellar body.To respectively After parts are cleaned, assemble combination die 2,61 according to order contrary to the above.

In the implementation described above, by shim clip is loaded between lamellar body or between unit Form each slit 25,26,72,85.However, it is not limited to such structure.Such as pass through Form ridge at the outer surface of lamellar body and the outer surface of unit also to be able to form slit.

Industrial applicability

Mould involved in the present invention is suitable to manufacture various tire.

Claims (9)

1. a mold for tire, is formed with cavity surface at inner surface, the spy of this mold for tire Levy and be, possess:

Block portion, this block portion has circumferentially or the lamellar body of multiple tabulars the most arranged side by side；

Keeper, this keeper has can be for the recess of above-mentioned piece of portion's assembling；And

Fixed mechanism, this fixed mechanism will be with above-mentioned in the way of can dismounting relative to above-mentioned recess The block portion that recess is fitted together to is fixed,

Above-mentioned fixed mechanism has: above-mentioned piece of portion surface along through each lamellar body direction formed Slot and be configured at above-mentioned recess inner surface the engaging engaged with above-mentioned slot dash forward Bar,

By slot is engaged ridge engaging with above-mentioned, thus stoping block portion is from the inner surface of recess Freely depart from,

Above-mentioned piece of portion is made up of multiple unit as small blocks,

It is fitted to multiple said units are to clamp the second pad between adjacent unit In above-mentioned recess,

Between two adjacent said units, the second slit is formed by above-mentioned second pad.

Mold for tire the most according to claim 1, it is characterised in that

Said units utilizes above-mentioned fixed mechanism to be fixed on above-mentioned recess in the way of can dismounting.

Mold for tire the most according to claim 1 and 2, it is characterised in that

And it is configured to:

It is formed with the holding section fastened mutually at adjacent said units contact surface each other,

The unit of an adjacent side is fixed in recess, it is possible to stop the unit of the opposing party from recessed Portion departs from.

Mold for tire the most according to claim 1 and 2, it is characterised in that

Above-mentioned lamellar body is circumferentially arranged side by side,

Above-mentioned recess has bottom surface and opposed pairs side wall inner surfaces,

The unit contacted with the side wall inner surfaces in block portion constitutes end unit,

Above-mentioned engaging ridge includes first can dismounted relative to the side wall inner surfaces of above-mentioned recess Key,

Above-mentioned slot includes the first keyway, and this first keyway is formed at end unit, and with above-mentioned First key engaging.

Mold for tire the most according to claim 4, it is characterised in that

Be configured at above-mentioned end unit each other, unit structure in addition to above-mentioned end unit Become temporary location,

Above-mentioned engaging ridge includes the second key that can dismount relative to the bottom surface of above-mentioned recess, Above-mentioned slot includes the second keyway, and this second keyway is formed at temporary location, and with above-mentioned second Key engages.

Mold for tire the most according to claim 1 and 2, it is characterised in that

Possess the first pad being sandwiched between the above-mentioned lamellar body of adjacent two,

Between two adjacent above-mentioned lamellar bodies, the first slit is formed by above-mentioned first pad.

7. the manufacture method of a mold for tire, it is characterised in that include following operation:

The lamellar body mother metal of multiple tabulars is fixed under juxtaposition and forms multiple unit mother Material, and by multiple unit mother metals make lamellar body mother metal facing to integration under unidirectional state And form the operation of block portion mother metal；

Formed the operation of recess on keeper mother metal by machining, this recess is used for assembling Block portion mother metal；

The surface of above-mentioned piece of portion's mother metal forms slot along the direction running through each lamellar body mother metal Operation；

The engaging that can engage with above-mentioned slot preparing to be configured at the inner surface of above-mentioned recess is dashed forward The operation of bar；

When engaging ridge and being sticked in slot, so that the also column direction of multiple lamellar body mother metal For circumferential or axial mode, above-mentioned piece of portion's mother metal is assemblied in the recess of keeper mother metal and constitutes The operation of combination die mother metal；

Combinations thereof mould mother metal is implemented machining and forms the combination die formation process of cavity surface； And

Connect multiple combinations thereof mould and form the mould formation process of mould,

This mould is the mold for tire according to any one of claim 1 to 6.

The manufacture method of mold for tire the most according to claim 7, it is characterised in that

Formed above-mentioned piece of portion's mother metal operation in, by by pad deployment in adjacent lamellar body mother metal Form slit each other,

In combinations thereof mould formation process, above-mentioned slit is made to be exposed to above-mentioned cavity surface.

9. a tire manufacturing method, it is characterised in that include following operation:

The operation of green tire is obtained by preforming；

Above-mentioned green tire is dropped in the operation that inner surface is formed with the mould of cavity surface；And

To the pressurization of above-mentioned green tire and the operation of heating in above-mentioned mould,

Above-mentioned mould is the mold for tire according to any one of claim 1 to 6.