CN105840850A

CN105840850A - Filling valve

Info

Publication number: CN105840850A
Application number: CN201610368928.4A
Authority: CN
Inventors: 史中伟; 史正; 唐官仁; 徐军强
Original assignee: Hangzhou Zhongya Machinery Co Ltd
Current assignee: Hangzhou Zhongya Machinery Co Ltd
Priority date: 2016-05-27
Filing date: 2016-05-27
Publication date: 2016-08-10
Anticipated expiration: 2036-05-27
Also published as: CN105840850B

Abstract

The invention discloses a filling valve. A piston is composed of a shell, a base, a connecting piece and elastic supporting bodies; the shell has a semi-closed integrated structure, and an opening part of the shell is formed far away from the part needing to supply the sealing action during filling operation and the part needing to supply the diversion action during cleaning operation, so that the only gap formed after the shell is combined with the base to form the integrated structure does not influence the filling operation and the cleaning operation; the surface of the shell has a continuous and seamless structure, so that with design of the piston into the integrated surface structure and arrangement of the only connecting part on the surface of the piston at the position, far away from the range of filling operation, and the filling valve ensures that the surface of the piston is arranged in a region for a material to flow through in the continuous and seamless characteristic; the clean degree of the piston can meet the requirement for aseptic filling, the using field of the piston is enlarged, and the use influences of the gap of the surface of the piston on the filling valve are completely avoided.

Description

A kind of filling valve

Technical field

The present invention relates to a kind of filling valve.

Background technology

In piston-type measurement filling valve field, filling valve includes valve body and be positioned at valve inner rotary valve, Piston.Such as disclosed in 7 days July in 2010 Chinese patent of Publication No. CN101767760A, open The charging of a kind of food filling and the switching valve of discharging, in valve piston linear move back and forth and with spool Rotation process, it is achieved the conveying purpose of material.As it is shown in figure 1, in prior art, piston-type measurement is filling The piston that valve uses is all the structure that separating component assembles, including upper cover the 24, first sealing ring 25, a bracer 26, the second sealing ring 27, bottom 28, upper cover 24 is provided with discoid position and protrudes at discoid position Connecting portion, bottom 28 is fixedly mounted at the connecting portion of upper cover 24, the first sealing ring 25, support Block the 26, second sealing ring 27 is sandwiched between which.The piston structure ultimately formed is at two sealing ring places Position obtains the position for being connected with valve seal, must form gap after being connected by sealing ring both sides The impact of reason, at least four annulus, road at this sealing position surface alignment, and position, gap Relate to filling job area the most filling time material flow through at gap.So many gap seriously constrains this work The range of plug metering filling valve, especially for the sterile filling field that sanitary cleaning degree is higher, Gap certainly will produce health concerns, though the most distinct issues be take cleaning measure to eliminate health concerns, Still the many drawbacks cleaning inconvenience can be there is.

Summary of the invention

The technical problem to be solved in the present invention is that the gap of the piston face how eliminating filling valve is to fill operations Impact, thus provide that a kind of to have piston at filling job area be surface continuous print, seamless filling valve.

For solving above-mentioned technical problem, the present invention adopts the following technical scheme that this filling valve is provided with valve body and work Plug, described piston is movably arranged in valve body, and described piston includes housing, base, connector, resilient support Body, described housing is that integral type structure, described housing are provided with main body section and elastic position, described main part Position include water conservancy diversion position and force part, described water conservancy diversion position be flat structure, described force part be pipe Shape structure, the outside at described water conservancy diversion position is provided with centre position and the one of the force part of guide face I, inner side End connects, and described housing is T-shaped at the cross section of main body section, and described connector is that bolt, connector set Flange, described connector Guan County is had to be contained on force part, the center line of described connector and casing centerline Overlap, described elastic position in tubular construction, described elastic position be distributed in water conservancy diversion position edge and be subject to Power position is positioned at the inner side at water conservancy diversion position together, and the outer surface at described elastic position links up with guide face I, institute State elastic position to include sealing position, moulding position, the side at described sealing position is connected with water conservancy diversion position, The opposite side at described sealing position is connected with moulding position, and described sealing position outer surface is provided with in housing The projection of heart line distribution, described housing is at the largest outside diameter of high spot, and the inner surface at described moulding position is provided with Confined planes, described sealing position, moulding position, between water conservancy diversion position and force part formed be used for accommodating bullet The chamber of property supporter, described confined planes is towards chamber, and the cross section of described chamber is trapezoidal, described chamber Being provided with an opening, described opening is towards the region between moulding position and force part, and described confined planes arrives The distance on the surface of force part opening towards on gradually decrease, described elastic support cross section is also in ladder Shape, described elastic support is placed in chamber with compressive state, described elastic support with seal position, lead Stream position, force part all connect and make sealing position, water conservancy diversion position, force part all be carried out own elasticity The extruding of supporter, is provided with through hole in the middle of described base, described base is fixedly connected in moulding position, institute Stating base to be tightly connected with moulding position, described flange is positioned at forced section on the center line bearing of trend of piston Between position and base, one end of described connector is positioned at the side of base, described base, elasticity through through hole Supporter, be provided with between moulding position and force part accommodate elastic support deformation position cavity.

In this technical scheme, housing is that semi-enclosed integrative-structure, its opening are arranged far from needs The position of sealing function is provided during filling operation, away from providing the position of guide functions when needing washing and cleaning operation, Therefore the unique connecting portion produced after housing is combined with base and to form integrative-structure do not affect filling operation, Do not affect washing and cleaning operation；Surface of shell is continuous print, seamless structure.So, the present invention uses integral type Housing and connecting portion migrate to the technical scheme of reasonable position (non-active area), completely eliminate existing In technology because gap is had to be present in the health concerns that filling job area causes and the problem cleaning inconvenience.

Piston is tightly connected relation with the foundation of other parts, is dependent on the surface of other parts of piston press, And then form close annexation, this annexation refers to set up interference fit between piston and other parts, Thus produce the effect being tightly connected.The sealing position of housing is that piston is tightly connected pass with the formation of other parts The sole site of system, in order to be able to make sealing position the tightst with other component contact, first seals position quilt It is designed as the position that whole piston wall thickness is the thinnest, makes sealing position obtain elastic deformation ability；Second, elastic Supporter is arranged in housing, and after installation, elastic support is in contraction state the trend that is in expansion and holds Continuous continuous crush seal position outwards deforms.Finally, seal member protrudes laterally, and its projection is tightly pressed Valve interior surface on the surface of other parts, such as filling valve.

The effect of elastic support is maintain the deformation tendency sealing position and undertake External Force Acting (this external force The mainly reaction force of other component feedback).Elastic support is not with expansion side naturally in an initial condition Formula is positioned at enclosure interior, and be affected by from seal position, water conservancy diversion position, the package action of force part and In the state being extruded, it with seal position, water conservancy diversion position, force part compact siro spinning technology；For accommodating bullet Property supporter the effect of chamber be to accommodate elastic support and make elastic support deform, it is ensured that bullet Property supporter can promote sealing position deform laterally and protrude.

Control elastic support deformation tendency it is crucial that the shape of chamber, limit in the technical scheme of the application The effect of plane is not only that the position guaranteeing elastic support is restricted, it is often more important that control elasticity Support body has all the time to sealing the trend that position is stretched, and reaches to promote sealing the purpose that position deforms laterally.

When using this piston, interference fit state forces sealing position to be shunk inside, so, seals in position Side promote elastic support so that resilient support body deformability, resilient support body deformability after part to base, Elastic support, cavity between moulding position and force part migrate.Cavity during piston applications extremely Closing important, it serves the effect of the deflection of direct snubber elastomeric supporter, has producing interference fit Key effect.

The perfect condition of reciprocating motion of the pistons is to maintain fixed pose, and the centerline parallel of piston is in the fortune of piston Dynamic direction, it should avoid the centerline dip situation in the direction of motion of piston, but should in implementation process Situation can be caused by many reasons, such as install not in place, manufacturing deficiency, parts are impaired, operation pair As instability etc..The situation of tilting of the piston once occurs, on housing except other protruding position (especially It is end) have the situation that the surface with other parts contacts, therefore the frictional force that piston movement is subject to increase. But, the surface foundation that now projection on housing remains to other parts is tightly connected, say, that seal Position is still in effective duty.In order to eliminate the impact of frictional force, the master at moulding position in the application The external diameter of body portion has all been configured to the structure less than the external diameter sealing position, so in the elastic portion of housing Define step structure at Wei, when tilting of the piston the end of housing can away from the surface of other parts, Thus avoid the piston can be by extra frictional force.

Moulding position is the position that housing is connected with base.Can be joined by interference between base and moulding position Conjunction mode is fixed connection, can also be connected by binding agent is fixing.Which kind of connected mode is all for moulding The pliability at position has particular requirement, and pliability depends on the wall thickness degree at moulding position, and wall thickness value is more Greatly, pliability the poorest, wall thickness value is the least, pliability the best.For making moulding position reach rational pliability, The wall thickness at described moulding position is designed to more than sealing the position wall thickness at high spot, but still needs to keep sealing The external diameter at position is more than the external diameter at moulding position.

Sealing position, between moulding position and water conservancy diversion position, seals side, position and is linked as one with water conservancy diversion position Body, sealing position opposite side are connected as a single entity with moulding position.The pliability that sealing position shows is than moulding portion The pliability of position is more pliable and tougher, seals position more elastic than moulding position.Elastic support is pushed and is sealed Easily make sealing position bend laterally in the case of position, housing shows as sealing position outward bulge Rise.Therefore, the deformation behaviour sealing position is to ensure that this piston can be tightly connected pass with other parts are set up The key factor of system.Seal and should seal position by the position of deformation acquisition maximum displacement on position Centre position, is arranged at the zone line sealing position by projection, it is possible to make protruding and other parts foundation The most close annexation.The most important thing is, back piston is so set and obtains compensation function at high spot, Because bigger displacement ensure that protruding can passing through under state of wear deforms the outward extending reaction of acquisition Mechanism, thus compensation can be obtained by self-deformation in the case of projection is worn and torn.

Base is disc-shaped structure, and it is only fixed in its side and moulding position and is connected, by moulding position Inner side arranges the stopper slot of annular, and stopper slot width is equal to the thickness at the edge of base；Limit when base Edge is embedded in stopper slot, and the side of base directly contacts with housing and limited by housing, base opposite side Surface just coherent with the surface of housing and form one.The design of stopper slot can be effectively improved mounting seat Efficiency and installation accuracy.

In order to improve the contiguity of base and housing, the centre of described base is provided with groove, described recessed Groove connects with through hole, and described force part is embedded in groove.Force part is embedded in groove, forced section Position and base set up close annexation；Make to be connected between housing with base more firm.The design of flange The contiguity between connector and force part and base can be increased equally.

Preferred as the present invention, described guide face I is in the shape being made up of side and the upper bottom surface of round platform. The structure of guide face I beneficially liquid leaves piston to casing peripheral flowing under gravity, it is ensured that lead Stream interface I will not pile up liquid, it is simple to thoroughly cleaning piston.

Same for thorough cleaning piston, described base is provided with guide face II, and described guide face II is in round platform The shape of side, the outer surface at described moulding position links up with guide face II.

In order to avoid produce gap potential situation, make whole piston face no matter be in filling job area, Also it is remote from filling job area and is all rendered as continuous, seamless feature, the edge of described base and moulding portion Connecting by binding agent is fixing between Wei, the outer surface at described moulding position links up with the outer surface of base.Should Binding agent can be filled up completely with in the small gaps between housing and base, overflows at housing table by removing The mode of the binding agent in face obtains at position, binding agent place can be with the outside at moulding position, the outer surface of base Coherent surface.The whole surface of piston presents continuous, seamless feature, completely eliminates the shadow in gap Ring.

The present invention uses technique scheme: filling valve by being the surface texture of integral type by plunger designs, And unique for piston face connecting portion is disposed away from the position of filling job area, thus ensure piston table Face is positioned at, with continuous print, seamless feature, the region that material flows through.The clean surface degree of piston can meet The requirement of sterile filling, the use field of piston is expanded, and thoroughly avoids piston face gap to filling The use impact of valve.

Accompanying drawing explanation

The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of prior art filling valve；

Fig. 2 is the use schematic diagram of the present invention；

Fig. 3 is the piston structure schematic diagram of the present invention；

Fig. 4 is the structural representation of the housing of the piston of the present invention；

Fig. 5 is the structural representation of the main body section of the housing of the piston of the present invention；

Fig. 6 is the structural representation at the elastic position of the housing of the piston of the present invention；

Fig. 7 is the structural representation sealing position at the elastic position of the housing of the piston of the present invention；

Fig. 8 is the structural representation at the moulding position at the elastic position of the housing of the piston of the present invention；

Fig. 9 is the structural representation of the connector of the piston of the present invention；

Figure 10 is the structural representation of the base of the piston of the present invention.

Detailed description of the invention

As Fig. 2 is to shown in 10, and filling valve is provided with valve body 1 and piston 2, and valve body 1 inner hollow is for appearance Receive piston 2 and material.Piston 2 is movably arranged in valve body 1, and is tightly connected relation with valve body 1 formation. As it is shown on figure 3, this piston includes housing 3, base 4, connector 5, elastic support 6.Housing 3 With base 4 be food grade plastic, connector 5 be metal parts, elastic support 6 is for having resilient rubber Glue component.Base 4 and elastic support 6 are all arranged in housing 3, the outer surface of whole piston 2 by The outer surface of housing 3 and a side composition of base 4；Although connector 5 is also mounted in housing 3, But it has one end to protrude in the side of base 4, i.e. protrudes from the outer surface of housing 3.

As shown in Figure 3,4, housing 3 is integral type structure, and it has main body section 7 and elastic position 8, Main body section 7 includes that again water conservancy diversion position 9 and force part 10, elastic position 8 include again sealing position 11 He Moulding position 12.

As it is shown in figure 5, the cross section of the main body section 7 of housing 3 is T-shaped structure, water conservancy diversion position 9 is in flat Flat structure, force part 10 are in tubular construction.Water conservancy diversion position 9 in truncated conical shape, the surface at water conservancy diversion position 9 In the shape being made up of side and the upper bottom surface of round platform and guide face I 13 that this surface is water conservancy diversion position 9, lead Stream interface I 13 belongs to the outer surface of housing 3；Force part 10 is positioned at inside water conservancy diversion position 9 and at water conservancy diversion position The centre position of 9, one end of force part 10 is connected with water conservancy diversion position 9, sees on the whole, and both belong to one Two parts of body structure.The center line of force part 10 overlaps with the center line at water conservancy diversion position 9, and this two The center line of person all center lines with piston 2 overlap.

As shown in Fig. 3,5,9, connector 5 is fixing with force part 10 to be connected, and the surface of connector 5 sets Have external screw thread, the external screw thread of connector 5 one end to engage with the internal thread of force part 10, make connector 5 with Force part 10 is fixing to be connected；Be provided with flange 14 in the middle part of connector 5, the external diameter of flange 14 with The external diameter of force part 10 is identical, flange 14 be close to the end of force part 10 the most not with water conservancy diversion position 9 This end connected.Flange 14 is in the close annexation of the body with force part 10 relying on connector 5 Achieve the close-connected purpose with the end of force part 10, therefore connector 5 on the whole with housing 3 shape Become annexation closely.Connector 5 other end also is provided with external screw thread.

As shown in Fig. 3,4,6, elastic position 8 is distributed in the edge at water conservancy diversion position 9, elastic position 8 Outer surface links up with guide face I 13, and elastic position 8 is all located at water conservancy diversion position together with force part 10 The same side of 9, on the whole, elastic position 8 and force part 10 are all located at the interior of water conservancy diversion position 9 Side.

Sealing position 11, the moulding position 12 at elastic position 8 is all the tubular structure that wall thickness is relatively thin.Sealing Position 11 is provided with the minimum position of wall thickness and the position of largest outside diameter.As it is shown in fig. 7, seal on position 11 It is provided with the projection 15 of the center line distribution around the i.e. force part 10 of housing 3 center line, at piston 2 center line Bearing of trend on, protruding 15 are distributed in the zone line sealing position 11, and this makes to seal position 11 Cross section is convex, and sealing position in addition to protruding 15, the position 11 is the thinnest position of wall thickness, and protruding It is that whole piston 2 is maximum that the external diameter of 15 becomes.The side sealing position 11 is directly connected with water conservancy diversion position 9, close The opposite side at envelope position 11 is connected with moulding position 12.Such as Fig. 6, shown in 8, moulding position 12 is with close This side that envelope position 11 connects is provided with progressive structure, and its external diameter and internal diameter are prolonging along piston 2 center line Stretch on direction all in the state gradually changed.Moulding position 12 is outside this side being connected with sealing position 11 Footpath is less than or equal to the external diameter at elastic position 8, and moulding position 12 is in this side being connected with sealing position 11 Inner surface i.e. inner surface to the distance on the surface of force part 10 at the bearing of trend along piston 2 center line On in the state gradually changed, this inner surface is the confined planes 16 at moulding position 12.The master at moulding position 12 The external diameter of body is less than the external diameter at sealing position 11, and the wall thickness at moulding position 12 is more than sealing position 11 in projection Wall thickness at 15.The inner side at moulding position 12 is provided with the stopper slot 17 of annular, and moulding position 12 is at stopper slot The cross-sectional profiles of 17 positions is L-shaped.

As shown in Fig. 3,4,8, seal position 11, moulding position 12, water conservancy diversion position 9, force part 10 Together form chamber 18, the cross section of this chamber 18 is trapezoidal, be used for accommodating elastic support 6.Elastic Supporter 6 is circulus, and its cross section is trapezoidal, the horizontal stroke of the cross section of elastic support 6 and chamber 18 Cross sectional shape is identical and the area of the cross section of elastic support 6 is more than the area of the cross section of chamber 18. Elastic support 6 can be limited by housing 3 and is in compressive state in being arranged on chamber 18, resilient support The surface at body 6 only crush seal position 11, the confined planes 16 at moulding position 12, the table of force part 10 Face, the surface at water conservancy diversion position 9, elastic support 6 is in the sealing position 11 of extruding housing 3 all the time, leads Stream position 9 and the state of force part 10.Owing to sealing position 11, there is pliable and tough elastically-deformable feature, Therefore arch upward in direction to the center line away from piston 2 under the squeezing action of elastic support 6, seal position The projection 15 of 11 is placed in the position away from piston 2 center line.

Chamber 18 is provided only with an opening so that chamber 18 is semi-enclosed structure.Opening is towards moulding portion Region and opening between position 12 and force part 10 are put down towards the bearing of trend with the center line of piston 2 OK, confined planes 16 to the surface of force part 10 distance opening towards on gradually decrease.Confined planes 16 Effect the chamber 18 width on opening direction is gradually reduced, limit elastic support 6 movable model Enclose.

Such as Fig. 3, shown in 10, base 4 is in the form of annular discs, and centre is provided with through hole 19 and groove 20, through hole 19 Center line and groove 20 center line overlap, groove 20 connects with through hole 19, through hole 19, groove 20 The cross section making the space of base 4 centre is T-shaped, the diameter of groove 20 and the external diameter of force part 10 Identical, the thickness at the edge of base 4 is equal to the width of stopper slot 17.During installation, only in the side of base 4 Smear binding agent, then the edge of base 4 is embedded in stopper slot 17, make base 4 be fixedly mounted on housing On 3；One end of force part 10 is embedded in groove 20 so that flange 14 prolongs at the center line of piston 2 Stretch on direction between force part 10 and base 4；The other end of connector 5 passes through hole 19, thus Connector 5 is provided with externally threaded one end and protrudes in the side of base 4.

After installation, the edge on a surface of base 4 is limited by the stop at moulding position 12, Receiving resilient support is yet forms both between base 4, elastic support 6, moulding position 12 and force part 10 Body 6 deforms the cavity 23 at position.Another surface of base 4 is positioned at the outside of housing 3 and as housing 3 The part of outer surface, this outer surface is guide face II 21, and guide face II 21 is the shape of the side of round platform, The outer surface at moulding position 12 links up with guide face II 21；And base 4 is plane in the centre on this surface, During use for set female connecting rod and dock.

Piston 2 is arranged in housing 3, the effect of protruding 15 elastically supported bodies 6 and with housing 3 tightly Contact, piston 2 is formed with housing 3 and is tightly connected.Elastic support 6 is squeezed and deforms, and becomes Shape makes elastic support 6 have position to migrate in cavity 23.Now, elastic support 6 is collected compression, Therefore, the exposure level between protruding 15 and housing 3 is promoted closely.Due to, elastic support 6 is Being in compressive state, once seal the annexation at position 11 and change, these changes include projection The situation of 15 abrasions, just can continue to press on residue protruding 15 by elastic support 6 and tightly be squeezed in housing 3 On, and continuously form the relation that is tightly connected closely.Most importantly the connecting portion position on piston 2 surface Be not involved in the region of filling operation in valve body 1, the connecting portion on piston 2 will not contacting material and only have Piston 2 continuous print, bright and clean surface can contacting materials.

Claims

1. a filling valve, it is characterised in that: this filling valve is provided with valve body (1) and piston (2), described piston (2) in being movably arranged on valve body (1), described piston (1) include housing (3), base (4), connector (5), Elastic support (6), described housing (3) be integral type structure, described housing (3) be provided with main body section (7) and Elastic position (8), described main body section (7) includes water conservancy diversion position (9) and force part (10), described diversion division Position (9) in flat structure, described force part (10) in tubular construction, the outside of described water conservancy diversion position (9) Be provided with guide face I (13), the centre position of inner side is connected with the one end of force part (10), described housing (3) T-shaped at the cross section of main body section (7), described connector (5) is that bolt, connector (5) are provided with flange (14), described connector (5) Guan County is contained on force part (10), the center line of described connector (5) and shell Body (3) center line overlaps, and in tubular construction, described elastic position (8) is distributed in water conservancy diversion to described elastic position (8) The edge at position (9) and be positioned at the inner side of water conservancy diversion position (9) together with force part (10), described elastic position (8) outer surface and guide face I (13) links up, and described elastic position (8) includes sealing position (11), moulding Position (12), the side of described sealing position (11) is connected with water conservancy diversion position (9), described sealing position (11) Opposite side is connected with moulding position (12), and described sealing position (11) outer surface is provided with around housing (3) center line The projection (15) of distribution, described housing (3) at the largest outside diameter at protruding (15) place, described moulding position (12) Inner surface is provided with confined planes (16), described sealing position (11), moulding position (12), water conservancy diversion position (9) and Formed between force part (10) and be used for accommodating the chamber (18) of elastic support (6), described confined planes (16) face To chamber (18), the cross section of described chamber (18) is trapezoidal, and described chamber (18) is provided with an opening, institute Stating opening towards the region between moulding position (12) and force part (10), described confined planes (16) arrives stress The distance on the surface at position (10) opening towards on gradually decrease, described elastic support (6) cross section also in Trapezoidal, in described elastic support (6) is placed in chamber (18) with compressive state, described elastic support (6) with Sealing position (11), water conservancy diversion position (9), force part (10) all connect and make sealing position (11), diversion division Position (9), force part (10) are all subject in the middle of the extruding from elastic support (6), described base (4) to be provided with Through hole (19), described base (4) is fixedly connected in moulding position (12), described base (4) and moulding position (12) being tightly connected, described flange (14) is positioned at force part (10) on the center line bearing of trend of piston (2) With between base (4), one end of described connector (5) is positioned at the side of base (4) through through hole (19), described Receiving elasticity it is provided with between base (4), elastic support (6), moulding position (12) and force part (10) The cavity (23) at support body (6) deformation position.

Filling valve the most according to claim 1, it is characterised in that: being provided with of described moulding position (12) External diameter is less than the position of the external diameter sealing position (11).

Filling valve the most according to claim 2, it is characterised in that: the wall thickness of described moulding position (12) is big In sealing the position (11) wall thickness at protruding (15) place.

Filling valve the most according to claim 1, it is characterised in that: described projection (15) is positioned at sealing position (11) zone line.

Filling valve the most according to claim 1, it is characterised in that: described moulding position (12) inner side is provided with The stopper slot (17) of annular, described stopper slot (17) width is equal to the thickness at the edge of base (4), described base (4) edge is embedded in stopper slot (17).

6. according to filling valve described in claim 1 or 5, it is characterised in that: the centre of described base (4) sets Fluted (20), described groove (20) connects with through hole (19), and described force part (10) are embedded in groove (20) In.

Filling valve the most according to claim 1, it is characterised in that: described guide face I (13) is in by round platform Side and upper bottom surface composition shape.

Filling valve the most according to claim 1, it is characterised in that: described base (4) is provided with guide face II (21), the shape of the described guide face II (21) side in round platform.

Filling valve the most according to claim 1, it is characterised in that: the edge of described base (4) is with moulding Connect, outside the outer surface of described moulding position (12) is with base (4) by binding agent is fixing between position (12) Surface links up.