CN1143484A - Band and molding method thereof - Google Patents
Band and molding method thereof Download PDFInfo
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- CN1143484A CN1143484A CN 96106947 CN96106947A CN1143484A CN 1143484 A CN1143484 A CN 1143484A CN 96106947 CN96106947 CN 96106947 CN 96106947 A CN96106947 A CN 96106947A CN 1143484 A CN1143484 A CN 1143484A
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Abstract
Disclosed is a plastic band with a decorative member, which is integrally molded through injecting plastic into a die from one end of the die; the decorative member is embedded into the plastic, with some part exposed outside, and is provided with a through hole running in the direction of the plastic flow. The molding method includes the following steps: place the decorative member in the die, with the decorative partly exposed outside the main body of the band, then inject plastic into the cavity of the die; arrange a protrusion with a slope at the inner surface of the die, facing the inner surface of the decorative member, so that the flow direction of the melted injected plastic can be changed by the protrusion, thus the melted plastic can flow to the decorative member.
Description
The present invention relates to a kind of ribbon that is used for wrist-watch or its analog, and relate to a kind of molding methods of ribbon.
Wrist-watch is known with the ribbon that has a gadget that is made of metal, this ribbon with by flexible plastic, in belt body, be molded as one as polyurethane or analog.Gadget in the ribbon is made the shape of similar flat board usually, and therefore when the molten plastic injection wherein was provided with the mould of gadget, flowing of melted plastic material can not interrupted by gadget.Yet this ribbon has a shortcoming, and promptly the shape of ribbon is restricted, and can not obtain the ribbon of desired shape.
Therefore, in order to obtain to have the ribbon of desirable shape, people's gadget of how forming the longitudinal extension shape and how that gadget molding in strap-like objects of longitudinal extension shape is as a whole that begun one's study.
But when the gadget with longitudinal extension shape was molded in the integral body, gadget will be placed in than under the big pressure of the situation of the gadget of writing board shape owing to injection pressure (injection pressure of molten plastic).Thereby gadget might distortion or the sinking in the ribbon body owing to the effect of pressure.
The object of the present invention is to provide a kind of ribbon that has gadget with longitudinal extension shape, this ribbon can be by molding suitably, and in moulding process, the gadget in the ribbon body is indeformable or sink, and the molding methods that a kind of such ribbon is provided.
In order to achieve this end, ribbon according to the present invention comprises the plastics ribbon with a gadget, and this gadget is by from an end of mould injected plastic and one molding in the axial direction, and gadget embeds in the plastics, and the part of gadget is exposed; Wherein, gadget has a through hole that runs through along the plastic flow direction.
According to said structure, when gadget is set in the mould, crosses the through hole that is formed on gadget and be molded to an integral body owing to inject the stream of plastic of mould, gadget can be owing to injection pressure is placed under the bigger pressure.Therefore, can prevent that gadget from producing distortion or sink in moulding process in the ribbon body, even and the ribbon that uses the gadget that has the longitudinal extension shape also can be by molding suitably.
In order to reach this purpose, molding methods according to a kind of ribbon of the present invention, comprise the following steps: a gadget to be set at the mould that is used for a ribbon body of molding, make after molding, the part of gadget is exposed from the surface of ribbon body, then plastics is injected in the die cavity; Wherein the injection of the plastics on the inner surface of the mould relative with the inner surface of gadget side is provided with the bossing with a slope, makes the flow direction that injects molten plastic be changed by the slope of bossing, and molten plastic is flowed to gadget.
According to said method, when molding, changed by the slope of bossing owing to inject the flow direction of the molten plastic of mould, cause that molten plastic flows to the inner surface of gadget, gadget tends to be pushed to mold wall by the molten plastic that flows.Thereby, may prevent that gadget is out of shape or sinks in moulding process in the ribbon body, even and the ribbon that has a gadget with longitudinal extension shape also can be by molding suitably.
Fig. 1 is the perspective view of major part of first embodiment of the present invention's ribbon of being used for wrist-watch;
Fig. 2 is the perspective view of a gadget;
Fig. 3 is the sectional drawing that shows the molding state of the ribbon shown in molding Fig. 1 in mould;
Fig. 4 is the perspective view of major part of second embodiment of the ribbon that is used for wrist-watch of the present invention;
Fig. 5 is the sectional drawing that shows the molding state of the ribbon shown in molding Fig. 4 in mould;
Fig. 6 is the sectional drawing of user mode of major part that adopts the ribbon of the molding apparatus molding shown in Fig. 5;
Fig. 7 is the sectional drawing at the molding state of mould ribbon that is applied in the third embodiment of the present invention of the ribbon that is used for wrist-watch according to the present invention; And
Fig. 8 is the sectional drawing of pith that adopts the ribbon of the molding apparatus molding shown in Fig. 7.
First embodiment
Be applied to first embodiment of wrist-watch with reference to Fig. 1-3 explanation the present invention below with ribbon.
Fig. 1 is the perspective view that is used for the ribbon of wrist-watch according to of the present invention.Ribbon 1 comprises a ribbon body 3 that is made of plastics, and a plurality of gadget 2, and each gadget 2 has one to be embedded into part in the ribbon body 3 by embedding mould method of molding.
Each gadget 2 is shaped to the shape of box-like, is arranged, as shown in Figure 2 an end of opening by the sheet metal of pushing.In the upper surface portion of gadget 2, be formed with upwardly extending long and narrow hole 4, axial vertical side with ribbon body 3.In its front and rear surfaces (right side among Fig. 3 and left surface part), formed the through hole 5 that runs through each surface portion on the flow direction at the molten plastic of ribbon body 3 (right side among Fig. 3 and left to).In its each lower end a marginal portion 6 is arranged with rear surface part and side surface portion before each of each gadget 2, this part approximate horizontal ground outwards stretches.The upper surface portion of gadget 2 tilts, and makes that its front side (left side of Fig. 3) is higher, and becomes low more near rear side (right side among Fig. 3) more.
Ribbon body 3 by flexible plastic for example polyurethane or its analog make, and a long and narrow global shape is arranged.The formation of ribbon body 3 is that an end (bottom left section among Fig. 1) is big and remainder is less.In the thicker end part, be provided with a pin-and-hole 7, pin passes pin-and-hole ribbon and Wristwatch case is partly coupled together.On the thin upper surface partly of belt body 3, decorate bossing 8 and be integrally formed in the predetermined space.Gadget 2 is on being adjacent to the boundary between respectively decorating bossing 8 and approaching partly or being adjacent to than thickness portion and the position than each border between the thin part.And be embedded in the ribbon body, make the top of having only gadget 2 be exposed at the upper surface of ribbon body.At the lower surface of ribbon body 3, the sunk part 9 that is molded as is formed on the position of each gadget 2 below.
Next, the method for this ribbon 1 of molding will be described.At first, the mould 10 shown in Fig. 3 of preparation.Mould 10 comprises a patrix 10a and a counterdie 10b.Patrix 10a and counterdie 10b stack mutually, and die parting line PL is arranged therebetween, form and ribbon 1 corresponding die cavity 11 therein.At the left end of mould 10, be provided with a cast gate mouth 2, be used for being injected in the die cavity 11 from pin-and-hole 7 one sides of shoestring body 3 plastics with fusion.In this case, upper surface at die cavity 11, it is the inner surface of patrix 10a, formed one and be used for installing therein the installation dimple 15 on the top of each gadget 2 corresponding to the sunk part of respectively decorating bossing 8 14 and of ribbon body 3 than the step portion 13, of boundary between thickness portion and the thin part corresponding to ribbon body 3.On the basal surface of die cavity 11, promptly on the inner surface of counterdie 10b, formed bossing 16, for use in the molding of ribbon body 3 corresponding to each sunk part 9.Bossing 16 is positioned at the below that dimple 15 is installed.The side surface of bossing 16, promptly the side surface of molten plastic influent stream side (near a side of cast gate 12) has a slope 16a, makes molten plastic flow to dimple 15 is installed.In counterdie 10b, be mounted slidably in order to form the slide core 10c of pin-and-hole 7.
In order to pass through to use mould 10 molding ribbons 1, at first patrix 10a and counterdie 10b are separated to open mould.Gadget 2 is positioned among the patrix 10a, and like this, the top of gadget 2 just is installed in respectively installing in the dimple 15 on the inner surface that is formed at patrix 10a.Each gadget 2 is placed with a little gradient, makes that the left side (cast gate 12 1 sides) of patrix is higher and become low more from right-hand member is near more.Therefore, patrix 10a and counterdie 10b stack mutually, with die parting line PL closure, thereby form die cavity 11 in mould 10.In mould, each gadget 2 is arranged so that like this its front and rear surfaces part hangs down to the approximate mid portion of die cavity 11 from the inner surface of patrix 10a, and stretch in the direction of level of approximation each marginal portion 6 of front and rear surfaces part and side surface portion.In the time of in being held concurrently in the chamber 11 that is injected into mould 10 by cast gate 12 in fusion, the molten plastic that injects die cavity 11 flows to the front surface and the rear surface part of each gadget 2.But because on the flow direction of the molten plastic that is used for molding ribbon body 3, be formed with a through hole 5 that runs through the forward and backward surface portion of gadget, molten plastic can flow into by through hole 5 like this.Thereby gadget 2 trends towards not being placed under the big pressure that is produced by the injection pressure of molten plastic.So might prevent distortion or the sinking of gadget 2 in ribbon body 3 in moulding process, even and the ribbon 1 that uses gadget 2 with longitudinal extension shape also may be by molding suitably.
When molten plastic flows in the mould 10, because the flow direction of molten plastic is changed by the slope 16a of bossing 16, make molten plastic flow to the inner surface of gadget 2, gadget 2 promptly is pushed on the installation dimple 15 that is against in the die cavity 11.Thereby, may prevent that gadget 2 is out of shape or sinks in moulding process in ribbon body 3, and molding ribbon suitably.The upper surface that is used for each gadget 2 has a little slope, so its left side (cast gate 12 1 sides) is higher and low more near right-hand member more, has been changed the molten plastic that flows to by the slope 16a of bossing 16 and trended towards flowing to direction almost perpendicular to the upper surface of gadget 2.Thereby, the upper surface of gadget 2 must be pushed against to the installation dimple 15 of mould 10.
Adopt the ribbon 1 of this method molding, filled by plastics owing to be formed on the inside of the forward and backward lip-deep through hole 5 of gadget 2, gadget 2 embeds ribbon body 3, makes gadget 2 to be connected to securely on the ribbon body 3.Second embodiment
Next, be applied in wrist-watch with second embodiment on the ribbon with reference to Fig. 4-6 explanation the present invention.
Ribbon 20 comprises one by flexible plastic, the ribbon body of making such as polyurethane 22, and gadget 21, and the part of gadget 21 embeds ribbon body 22 by embedding mould method of molding.
Be similar to the gadget of embodiment 1, this gadget 21 has one by pushing the end that a sheet metal is opened for being similar to the shape of box.Gadget 21 has the upper surface portion of a level of approximation.In the upper surface portion that is formed on gadget 21 perpendicular to the upwardly extending long and narrow hole 23 of axle of ribbon 22.In the molten plastic flows direction that is used for molding ribbon body 22, be formed with a through hole 24 that runs through the forward and backward surface (right side among Fig. 5 and left surface part) of gadget 21.Forward and backward surface portion of each of gadget 21 and side surface portion have one in its each lower end, and approximate outwardly directed abreast marginal portion 25.
Similar to the ribbon body of embodiment 1, the global shape of this ribbon body 22 is long and narrow.It is big and the thickness of the other end is less that ribbon body 22 forms the thickness of an end (bottom left section among Fig. 4).Than thickness portion one end, be provided with a pin-and-hole 26, wherein can insert a pin spare, be used for ribbon is connected to the watchband coupling part of watch case.At the thin upper surface partly of ribbon body 22, gadget 21 embeds in the ribbon body 22 at a book office, makes and has only its top to expose the upper surface of ribbon body.Dimple part 27 is formed on the correspondence position on the upper and lower surface of ribbon body 22, thereby soft thin part 28 is formed on each on each position between the upper and lower dimple part 27.
Next the method for this ribbon 20 of molding will be described.At first, prepared mould 30 as shown in Figure 5.This mould 30 comprises a patrix 30a and a counterdie 30b.Patrix 30a and counterdie 30b stack mutually by die parting line PL, to form the die cavity 31 corresponding to ribbon 20.At the left end of mould 30, be provided with the cast gate 32 that is used for the plastics of fusion being injected into die cavity 31 from a side of the pin-and-hole 26 of ribbon body 22.In this example, upper surface at die cavity 31, it is the inner surface of patrix 30a, formed a step portion 33 than the boundary position between thickness portion and the thin part corresponding to ribbon body 22, and, formed the installation dimple 34 on the top that each gadget 21 is installed therein at predetermined space.Bossing 35 has the shape of trapezoidal or inverse taper, is formed on the upper surface of die cavity 31, promptly on the inner surface of patrix 30a, and between adjacent gadget 21, and the lower surface that is positioned at die cavity 31, the i.e. corresponding position of the inner surface of counterdie 30b.In counterdie 30b, be mounted slidably the slide core 30c that is used to form pin-and-hole 26.
For by adopting mould 30 molding ribbons 20, at first separate patrix 30a and counterdie 30b to open mould.Gadget 21 is placed among the patrix 30a, makes the top of each gadget 21 be installed in respectively installing in the dimple 34 in the inner surface that is formed on patrix 30a.Then, patrix 30a and counterdie 30b are stacked together, and with die parting line PL closure, thereby form die cavity 31 in mould 30.In mould, each gadget 21 is arranged to its front and rear surfaces part and dangles downwards to being similar to the die cavity core from the inner surface of die cavity 31, and stretch out with the level of approximation direction marginal portion 25 of front and rear surfaces part and side surface portion.When the plastics of fusion are injected in the die cavity 31 of mould 30 by cast gate 32, because the molten plastic that is injected in the die cavity 31 flows through the front and rear surfaces through hole 24 partly that is formed on gadget, similar with first embodiment, gadget 21 trends towards not being placed under the big pressure that is produced by the injection pressure of molten plastic.Therefore, may prevent gadget 21 distortion or sink in ribbon body 22 in moulding process, and molding ribbon 20 suitably.
The ribbon 20 of molding in this way, because dimple part 27 is formed on the upper and lower lip-deep relevant position of the ribbon body 22 between the adjacent gadget 21, and be formed on bossing 35 on the relevant position of upper and lower surface of die cavity 31 of mould 30 by utilization, in ribbon body 22, formed soft thin part 28, can be at an easy rate by soft thin part 28 crooked ribbon bodies 22.Therefore, because when ribbon body 22 is bent, this bending is difficult to cause that the top of gadget 21 and the stress of the boundary member 36 between the ribbon body 22 concentrates, and is difficult at boundary member 36 places formation crackle or analog.Thereby, can obtain at equal perfect ribbon on the function and in the design.The 3rd embodiment
Be applied to three embodiment of wrist-watch with reference to Fig. 7 and 8 explanation the present invention below with ribbon.In these figure, identical reference number is represented the counter element among second embodiment, and omits its explanation.
For molding ribbon 40, at first, prerequisite class is similar to the mould 30 of second embodiment.Each spike 42 of gadget 41 is arranged on each lip-deep respectively the installation in the dimple 34 that is formed at patrix 30a.Because spike 42 is connected to each other continuously by coupling part 43, can once place all spikes 42 in mould 43.Thereby may improve ability to work, and reduce the number of the indispensable part of gadget 41 significantly, to reduce production costs.When patrix 30a and counterdie 30b stack when closing, in mould 30, form die cavity 31.In mould, each spike 41 is provided with like this, make its forward and backward surface portion dangle and down to the middle part of approximate die cavity from the inner surface of die cavity 31, stretch on the direction of level being similar to each marginal portion 25 of forward and backward surface portion, is similar to second embodiment.Therefore, when molten plastic injects the die cavity 31 of mould 30 by cast gate 32, flow through the through hole 24 that is formed on the forward and backward surface portion of gadget owing to inject the molten plastic of die cavity 31, be similar to second embodiment, gadget 41 trends towards not being placed under the big pressure that the injection pressure by molten plastic causes.Thereby may prevent gadget 41 distortion or sink in belt body 22 in moulding process, and then molding ribbon 40 suitably.
Adopt the ribbon 40 of this method molding, because when ribbon body 22 is bent at thin part 28 places, the coupling part 43 of gadget 41 is owing to flecition is separated from each other, even the spike 42 of gadget 41 is connected to one another in moulding process, they in use also can be separated.Therefore, ribbon 40 can be easily crooked, and be easy to use.Owing to be not easy to form crackle etc. on the top of gadget 42 and boundary member 36 places between the ribbon body 40, be similar to first embodiment, can obtain perfect function and design.
In the various embodiments described above, only the example that is applied to watch bracelet with regard to the present invention is described.But the ground that replaces also can should be in the belt of clothes or the ribbon of other purposes with the present invention.
Claims (16)
1, the plastics ribbon that has gadget, by on its axial direction from an end injected plastic of mould and the one molding, this gadget embeds in plastics, makes the part of gadget expose; It is characterized in that gadget has a through hole that runs through on the plastic flow direction.
2, plastics ribbon as claimed in claim 1 is characterized in that, gadget comprises a plurality of spike and a plurality of coupling parts that are formed between each adjacent spike and can be separated by flecition that form continuously in the axial direction.
3, plastics ribbon as claimed in claim 1 is characterized in that, a plurality of gadget one are molded in the ribbon body, and a plurality of thin part is formed between each adjacent gadget in the ribbon.
4, plastics ribbon as claimed in claim 1 is characterized in that gadget is made of metal.
5, plastics ribbon as claimed in claim 1, it is characterized in that, gadget comprises the upper surface portion of the upper surface that exposes ribbon, and perpendicular to the side surface portion of plastic flow direction, the marginal portion of wherein stretching on axial direction is formed on the lower end of side surface portion, and through hole is formed on the side surface portion perpendicular to the plastic flow direction.
6, plastics ribbon as claimed in claim 1, it is characterized in that, gadget has the shape that is similar to the box that has the end of opening, and gadget comprises a upper surface that exposes the upper surface of ribbon, perpendicular to two side surfaces of plastic flow direction and two side surfaces that are parallel to the plastic flow direction, wherein in the lower end of each side surface, form the marginal portion of outwards stretching, and in each side surface, on the plastic flow direction, form the through hole that runs through each side surface perpendicular to the plastic flow direction.
7, plastics ribbon as claimed in claim 1 is characterized in that, the plastics ribbon is used to be connected to wrist-watch, and is used for wrist-watch is worn over wrist.
8, a kind of molding methods of ribbon comprises the following steps: at the mould that is used for molding ribbon body a gadget to be set, and makes the surface that the part of gadget is exposed ribbon behind the molding, injected plastic in the die cavity of mould then;
It is characterized in that plastics injection side is provided with the bossing that has the slope on the inner surface of the mould relative with the inner surface of gadget, the flow direction of the feasible molten plastic that injects is changed by the slope of bossing, makes the plastic flows gadget of fusion.
9, molding methods as claimed in claim 8 is characterized in that, the plastics inlet of mould is arranged to link to each other with an end of the axial direction that is positioned at the ribbon body.
10, molding methods as claimed in claim 8 is characterized in that, on the molten plastic flows direction, gadget has a through hole that runs through the forward and backward surface of gadget.
11, molding methods as claimed in claim 8 is characterized in that, gadget comprises a plurality of spikes that form continuously in the axial direction, and a plurality of being formed on also can be bent effect coupling part separately between each adjacent spike.
12, ribbon molding methods as claimed in claim 8 is characterized in that, a plurality of gadget one are molded in the ribbon body, and a plurality of thin part is formed between each adjacent gadget in the ribbon body.
13, ribbon molding methods as claimed in claim 8 is characterized in that gadget is made of metal.
14, ribbon molding methods as claimed in claim 8, it is characterized in that, gadget comprises the upper surface portion of exposing ribbon body upper surface and perpendicular to the side surface portion of plastic flow direction, wherein the marginal portion of stretching in the axial direction is formed on the lower end of side surface portion, and through hole is formed on the side surface portion perpendicular to the plastic flow direction.
15, ribbon molding methods as claimed in claim 8, it is characterized in that, gadget has and is similar to a shape that has the box at an end of opening, and comprise a upper surface that exposes ribbon body upper surface, two side surfaces perpendicular to the plastic flow direction, and two side surfaces that are parallel to the plastic flow direction, wherein the marginal portion of outwards stretching is formed on the lower end of each side surface, and is formed with the through hole that runs through perpendicular to each side surface of plastic flow direction on the plastic flow direction.
16, ribbon molding methods as claimed in claim 8 is characterized in that, the plastics ribbon is used to be connected on the wrist-watch and is used for wrist-watch is applied to wrist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189737/95 | 1995-07-04 | ||
| JP18973795A JPH0919310A (en) | 1995-07-04 | 1995-07-04 | Band structure and molding method for band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1143484A true CN1143484A (en) | 1997-02-26 |
Family
ID=16246345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96106947 Pending CN1143484A (en) | 1995-07-04 | 1996-07-04 | Band and molding method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0919310A (en) |
| CN (1) | CN1143484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100574666C (en) * | 2002-01-02 | 2009-12-30 | 永汉金属制品厂有限公司 | The part and the manufacture method thereof of table |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706839B1 (en) | 1999-02-10 | 2004-03-16 | University Of Pittsburgh | Chemical partitioning agents and methods of using same |
-
1995
- 1995-07-04 JP JP18973795A patent/JPH0919310A/en active Pending
-
1996
- 1996-07-04 CN CN 96106947 patent/CN1143484A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100574666C (en) * | 2002-01-02 | 2009-12-30 | 永汉金属制品厂有限公司 | The part and the manufacture method thereof of table |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0919310A (en) | 1997-01-21 |
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