CN110696278A - Multicolor rubber belt body, preparation method thereof and wearable device - Google Patents
Multicolor rubber belt body, preparation method thereof and wearable device Download PDFInfo
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- CN110696278A CN110696278A CN201911009161.6A CN201911009161A CN110696278A CN 110696278 A CN110696278 A CN 110696278A CN 201911009161 A CN201911009161 A CN 201911009161A CN 110696278 A CN110696278 A CN 110696278A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 88
- 239000005060 rubber Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 58
- 239000003086 colorant Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 31
- 238000004073 vulcanization Methods 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 abstract description 8
- 239000003292 glue Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 229920001973 fluoroelastomer Polymers 0.000 description 6
- 230000009545 invasion Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007779 soft material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0053—Flexible straps
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application relates to the field of wearable devices, in particular to a multicolor rubber belt body, a preparation method thereof and a wearable device. A preparation method of a multicolor rubber belt body is suitable for preparing the multicolor rubber belt body which comprises a belt body made of rubber with a first color and a second belt body made of rubber with other colors by adopting a mold. The surface of the second belt body is provided with a preset exposed surface and a belt body covering surface. The preparation method comprises the following steps: placing the second belt body in a cavity of a mold, wherein the periphery of the second belt body is provided with a residual space; the exposed surface is attached to the mold, and the covering surface of the belt body is exposed in the residual space; under the action of pressure, the belt body raw material is injected into the residual space, so that the belt body raw material is vulcanized, molded and wrapped on the belt body covering surface of the second belt body. By extrusion molding the belt body around the second belt body, a multicolor rubber belt body can be produced.
Description
Technical Field
The application relates to the field of wearable devices, in particular to a multicolor rubber belt body, a preparation method thereof and a wearable device.
Background
The area body of wearable devices such as high-end smart meter, motion bracelet generally adopts rubber materials, but because the rubber area body forming process difficulty of the colour more than two kinds is big, the area body of wearable devices such as common high-end smart meter, motion bracelet is mostly monochromatic, and the polychrome area body is more rare.
Disclosure of Invention
An object of the present invention is to provide a multi-colored rubber tape body, a method for manufacturing the same, and a wearable device.
In a first aspect, the present application provides a technical solution:
a preparation method of a multicolor rubber belt body is suitable for preparing the multicolor rubber belt body which comprises a belt body made of rubber with a first color and a second belt body made of rubber with other colors by adopting a mould; the surface of the second belt body is provided with a preset exposed surface and a belt body covering surface;
the preparation method comprises the following steps:
placing the second belt body in a cavity of a mold, wherein the periphery of the second belt body is provided with a residual space; the exposed surface is attached to the mold, and the covering surface of the belt body is exposed in the residual space;
under the action of pressure, the belt body raw material is injected into the residual space, so that the belt body raw material is vulcanized, molded and wrapped on the belt body covering surface of the second belt body.
By extrusion molding the belt body around the second belt body, a multicolor rubber belt body can be produced. The preparation method is simple and feasible, and the forming effect is good.
In other embodiments of the present application, before the step of placing the second tape body in the cavity of the mold, the method further includes: and selecting a mould matched with the second belt body, so that when the second belt body is placed in the cavity of the mould, a narrow slit communicated with the residual space can be formed between part of the covering surface of the belt body and the inner surface of the mould.
Through setting up the slot, can make and crowd into some area body raw materials in the die cavity along this slot when moving to the direction that is close to the second area body, pressure reduces greatly to avoid the problem of excessive glue, cross color and area body deformation.
In other embodiments of the present application, the distance between the covering surface of the belt body forming the narrow slit and the inner surface of the mold is 0.05 to 3 mm.
The distance between the covering surface of the belt body forming the narrow slit and the inner surface of the die is 0.05-3 mm, so that the second belt body can be prevented from deforming under the extrusion of raw materials of the belt body, and the situation of non-straightness can be avoided.
In other embodiments of the present application, the extending distance from the entrance of the slit to the bottom of the slit is 0.5-3 mm.
When the belt body is formed, the joint of the second belt body (soft material) and the die (steel material, hard material) is easy to have the invasion of raw material of the belt body, and the situations of glue overflow, color cross, sawtooth and the like occur. The extension distance of the cover surface of the belt body extending to the entrance of the cavity is 0.5-3 mm, so that the pressure of the raw material of the belt body can be greatly reduced through the thin and long narrow slit, and the adverse phenomena of glue overflow, color crosstalk, saw teeth and the like can be avoided.
In other embodiments of the present application, the bottom wall of the cavity includes a first region and a second region that is sunken relative to the first region;
when the second belt body is placed in a cavity of the mold, part of the covering surface of the belt body extends to the second area, and a narrow gap is formed between the covering surface and the inner surface of the second area; the exposed surface adjacent to the covering surface of the belt body is attached to the inner surface of the first area.
Part of the covering surface of the belt body extends to the second area and forms a narrow gap with the inner surface of the second area, and the exposed surface adjacent to the covering surface of the belt body is attached to the inner surface of the first area, so that the two colors of the outer surface of the finally obtained multicolor rubber belt body can be well jointed without color cross.
In other embodiments of the present application, the exposed surface is convex with respect to the belt body cover adjacent thereto facing the cavity bottom wall;
when the second belt body is placed in a cavity of the mold, a narrow gap is formed between the covering surface of part of the belt body and the inner surface of the cavity; the exposed surface is attached to the inner surface of the cavity.
When the second belt body is placed in the cavity of the mold, a narrow gap is formed between the covering surface of the partial belt body and the inner surface of the cavity; the exposed surface is attached to the inner surface of the cavity, so that the two colors of the outer surface of the finally obtained multicolor rubber belt body can be well joined without color cross.
In other embodiments of the present application, before the step of placing the second tape body in the cavity of the mold, the method further includes: selecting a second belt body with a bulge on the exposed surface and a mold with a groove capable of being clamped with the bulge;
when the second belt body is placed in the cavity of the mold, the protrusion is clamped into the groove.
When the belt body is formed, the joint of the second belt body (soft material) and the die (steel material, hard material) is easy to have the invasion of belt body raw material, and the conditions of glue overflow, color cross, sawtooth and the like occur. Through setting up the arch, can prevent the invasion of taking the body raw material, stop bad phenomena such as excessive glue, color mixing, sawtooth.
In another embodiment of the present application, the step of injecting the raw material with a body into the remaining space includes:
and injecting the belt body raw material into the residual space of the cavity along the direction vertical to the side wall of the second belt body, and vulcanizing and molding.
The belt body raw material is injected along the direction vertical to the side wall of the second belt body, so that the belt body can be integrally molded around the second belt body.
In other embodiments of the present application, the sidewall of the second belt body has a slope;
optionally, the height of the slope is 1/2-2/3 of the overall height of the side wall.
Through setting up the slope, avoid taking the lateral wall that the body raw material directly strikeed the second area body for take the body raw material to fill the shaping along the slope from top to bottom in proper order, the shaping effect is better.
In other embodiments of the present application, the second belt body is provided with a precompression amount of 0.05-0.3 mm high.
By setting the compression amount, enough pre-pressure can be generated after die assembly, and the occurrence of glue overflow is further prevented.
In other embodiments of the present disclosure, the hardness of the second belt body and the belt body after vulcanization are within a range of 60 to 80 shore hardness.
Hardness ranges below or above the above range can affect the comfort of the belt and the belt formation yield.
In other embodiments of the present application, the pressure for injecting the raw material with the body into the remaining space of the cavity and performing vulcanization molding is 30 to 100 tons; the vulcanization time is 4-8 minutes.
Within the range, the forming effect is good, and excessive pressure can cause glue overflow; too little pressure to form.
In a second aspect, the present application provides a multi-colored rubber tape body:
a multi-colored rubber tape body comprising:
a second belt body having an exposed surface and a belt body covering surface; and
the belt body is arranged on the periphery of the second belt body and covers the covering surface of the belt body;
the second belt body has a first surface and an opposite second surface;
the exposed surfaces are positioned on the first surface and the second surface; the belt body covering surface comprises a side wall of the second belt body, a part of the first surface and a part of the second surface.
In other embodiments of the present application, the exposed surface of the second surface is flush with the surrounding covered surface of the belt body, and the thickness of the covered surface of the belt body on the partial second surface is 0.05-3 mm.
In other embodiments of the present application, the second surface has a second protruding portion, the second protruding portion is an exposed surface of the second surface, and a covering thickness of the belt body on a part of the second surface is 0.05-3 mm.
In other embodiments of the present application, the first surface has a first protruding portion, and the first protruding portion is an exposed surface of the first surface.
In other embodiments of the present application, the belt body covers the second surface from the edge of the sidewall of the second belt body to an inner distance of 0.5 to 3 mm.
In another embodiment of the present application, the side wall of the second belt body has a slope surface, and the slope surface is communicated with the first surface.
In other embodiments of the present application, the height of the slope is 1/2-2/3 of the overall height of the sidewall of the second belt.
In other embodiments of the present disclosure, the hardness of each of the second belt body and the belt body is within a range of 60 to 80 shore.
In other embodiments of the present application, the exposed surface is provided with a plurality of through holes.
In other embodiments of the present application, the hole walls of the through holes all protrude from the first surface to form a first protruding portion.
In a third aspect, the present application provides a wearable device, which includes the above-mentioned multi-color rubber belt body and a device body, wherein the rubber belt body is connected to the device body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic view of a multi-colored rubber tape body according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a multi-colored rubber tape body according to an embodiment of the present disclosure from a second perspective;
fig. 3 is a schematic view of a process for manufacturing a second belt according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a second belt body manufactured according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a first process for forming a belt body around a second belt body according to an embodiment of the present disclosure;
FIG. 6 is a schematic illustration of the direction of green stock injection into a belt body during manufacture of the belt body according to an embodiment of the present application;
fig. 7 is a partial schematic view of a first process for forming a belt body around a second belt body according to an embodiment of the present disclosure;
fig. 8 is a partial schematic view of a second process for forming a belt body around a second belt body provided in accordance with an embodiment of the present application;
fig. 9 is a partial schematic view of a third process for forming a belt body around a second belt body according to an embodiment of the present disclosure.
Icon: 100-a multi-colored rubber tape body; 110-a belt body; 120-a second belt body; 121-a through hole; 123-a first surface; 1231-a first projection; 124-side wall; 1241-slope; 125-projection; 126-bare surface; 127-belt body cover; 128-a second surface; 129-a second surface; 1291-a second projection; 130-a mould; 131-a lower die; 132-an upper die; 140-a mold; 141-a cavity; 1412-a first area; 1413-a second region; 142-remaining space; 143-narrow slits; 1431-entrance of the slit; 1432-bottom end of slit; 144-upper template; 145-lower template; 1451-groove; 146-middle template; 1461-gate; 150-belt body raw material; 160-predetermined connection interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", and the like refer to orientations or positional relationships that are based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the application are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of description and simplification of the description, but do not refer to or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be considered as limiting the application.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiment of the application provides a preparation method of a multicolor rubber belt body, which is suitable for preparing the multicolor rubber belt body comprising a belt body made of rubber with a first color and a second belt body made of rubber with other colors by adopting a mold.
The rubber material can be molded by a mold to obtain any shape due to the self performance and the structural characteristics of the rubber material. The fluororubbers have very poor flowability and longer vulcanization time compared with common rubbers, and are usually formed by extrusion in a die.
Therefore, the method for manufacturing a multi-colored rubber belt body according to the embodiment of the present application is particularly suitable for extruding the multi-colored rubber belt body including the belt body made of the fluororubber of the first color and the second belt body made of the fluororubbers of other colors by using the mold.
The first color is different from the other colors. For example, when a first color selects red, other colors may select blue. By means of the method, a rubber tape body having at least two colors can be produced. The band can be used for high-end smart meters, telemechanical bracelets and the like, and is wide in application.
Referring to fig. 1 to 9, a method for preparing a multi-colored rubber belt body 100 according to an embodiment of the present application includes the following steps:
step S1, the second tape body 120 is prepared.
Referring to fig. 3 and 4, the second tape body 120 is prepared using the mold 130. A color of rubber raw material (e.g., blue rubber raw material) is selected, the raw material is placed in the lower mold 131, and the upper mold 132 is closed. The whole mold 130 is placed on an oil press machine to be pressurized, and rubber raw materials are filled in the cavity of the lower mold 131 under the action of pressure and are vulcanized and molded.
In the illustrated embodiment, the second strap 120 is provided with a plurality of through holes 121, a hole wall of each through hole 121 protrudes from the first surface 123 of the second strap 120, and the plurality of protruding hole walls form the first protruding portion 1231. Specifically, the final structure of the second belt body 120 manufactured using the mold 130 is shown in fig. 4.
Further optionally, a pre-compression amount of 0.05-0.3 mm high is set when the second belt body 120 is molded.
Illustratively, when a second tape body 120 with a preset height of 2mm is prepared (for example, the height of the cavity of the mold 140 for subsequently placing the second tape body 120 is 2mm), a raw material with a height exceeding 2mm is added (for example, a raw material with a height of 0.3mm is added more), so that the prepared second tape body 120 with a height of 2.3mm has a precompression of 0.3mm, and when a tape body is subsequently formed, a sufficient precompression can be generated after mold closing, and glue overflow is further prevented.
In other alternative embodiments of the present application, the through hole 121 may not be disposed in the second tape body 120.
In the embodiment shown in fig. 3 to 4, the cavity of the lower mold 131 of the selected mold 130 can mold the second tape body 120 having a sidewall with a slope.
Specifically, the side walls 124 of the second belt body 120 are provided with slopes 1241, and further optionally, referring to fig. 3 to 4, the heights of the slopes 1241 are 1/2 to 2/3 of the overall height of the side walls 124. Illustratively, the sloping surfaces 1241 on the peripheral side walls of the second belt body 120 have a height 1/2, 11/20, 7/12, 3/5, or 2/3 of the overall height of the side walls 124.
With such a structure, when the belt body 110 is subsequently molded around the second belt body 120, the injected belt body raw material 150 can be sequentially filled into the cavity molding belt body 110 from top to bottom along the gradient, thereby preventing the belt body raw material 150 from directly impacting the side wall 124 of the second belt body 120 from the injection direction, and improving the molding effect.
In other alternative embodiments, referring to fig. 8, the second surface 129 of the second belt body 120 may be formed in a stepped shape such that the second surface 129 of the portion near the edge is depressed with respect to the remaining second surface 129. The specific forming method is to select an adaptive die and form the product according to the forming process.
In an alternative embodiment, referring to fig. 9, a bead-like protrusion 125 is formed on the second surface 128 of the second belt body 120. The specific forming method is to select an adaptive die and form the product according to the forming process.
In other alternative embodiments of the present application, the second belt body 120 may be obtained by purchasing.
Step S2, a rubber belt body 110 of a first color (e.g., yellow) is molded around the second belt body 120.
Specifically, referring to fig. 5 to 9, a mold 140 for molding the belt body 110 is selected. The mold 140 has a cavity 141 capable of accommodating the second tape body 120 and the tape body 110 at the same time.
The second tape body 120 manufactured in the step S1 is placed in the cavity 141 of the mold 140, and the remaining space 142 is provided around the second tape body 120.
Further, the surface of the second tape body 120 manufactured in the step S1 has a preset exposed surface 126 and a tape body covering surface 127.
The exposed surface 126 refers to the surface of the second tape body 120 that is not covered by the tape body 110 after the tape body 110 is molded around the second tape body 120; the belt body covering surface 127 refers to a surface of the second belt body 120 covered by the belt body 110 after the belt body 110 is molded around the second belt body 120.
Further, the exposed surface 126 of the second tape body 120 is attached to the mold 140, and the tape body covering surface 127 is exposed to the remaining space 142. Under the pressure, the belt body raw material 150 is injected into the remaining space 142, so that the belt body raw material 150 is vulcanization molded to wrap the belt body covering surface 127 of the second belt body 120.
Referring to fig. 5 to 7, in the first embodiment, the mold 140 adapted to the second tape body 120 is selected such that when the second tape body 120 is placed in the cavity 141 of the mold 140, a narrow slit 143 communicating with the remaining space 142 is formed between a part of the tape body covering surface 127 and the inner surface of the mold 140.
When the belt body is formed, the joint of the second belt body (soft material) and the die (steel material, hard material) is easy to have the invasion of raw material of the belt body, and the situations of glue overflow, color cross, sawtooth and the like occur.
For the fluororubber material, when the fluororubber material is extruded by a mold, the problems of color mixing, glue overflow and the like are more likely to occur due to higher extrusion pressure, and the preparation method of the multicolor rubber belt body provided by the embodiment of the application is more suitable for preparing the multicolor rubber belt body and can solve the problems of color mixing, glue overflow, saw teeth and the like easily occurring when the multicolor fluororubber is prepared and molded. Through setting up foretell slot 143 for the second area body 120 is to taking body 110 inside extension, takes body raw material to reduce greatly through pressure behind the long and thin slot like this, thereby can stop bad phenomena such as excessive glue, cross color, sawtooth.
Further, referring to FIGS. 7 and 8, a distance d1 between the belt body covering surface 127 forming the slit 143 and the inner surface of the mold 140 is 0.05 to 3 mm. In this scope, not only can stop bad phenomena such as excessive glue, color mixing, sawtooth effectively, can avoid the second area body to warp under the extrusion of taking the body raw material moreover, the condition of not directly appearing.
Further alternatively, the distance d1 between the belt body covering surface 127 forming the narrow slit 143 and the inner surface of the mold 140 may be selected to be 0.05 to 1 mm; or the distance d1 between the belt body covering surface 127 forming the narrow slit 143 and the inner surface of the mold 140 can be selected to be 0.05-0.5 mm; alternatively, the distance d1 between the belt body covering surface 127 forming the narrow slit 143 and the inner surface of the mold 140 may be selected to be 0.05 to 0.1 mm. Further, referring to FIGS. 6-8, the extended distance d2 from the entrance 1431 of the slot to the bottom 1432 of the slot is 0.5-3 mm. Within the range, the pressure of the belt body raw material after injection can be greatly reduced, and the adverse phenomena of glue overflow, color cross, saw teeth and the like are effectively avoided.
Further optionally, the extension distance d2 from the entrance 1431 of the slot to the bottom 1432 of the slot may be selected to be 0.5-1 mm; or the extension distance d2 from the entrance 1431 of the narrow slit to the bottom 1432 of the narrow slit can be selected to be 0.6-2 mm; or the extension distance d2 from the entrance 1431 of the slit to the bottom 1432 of the slit may be selected to be 0.8-1.5 mm.
In the embodiment shown in fig. 5-7, the selected mold 140, which is adapted to the second belt body 120, includes an upper mold plate 144, a lower mold plate 145, and a middle mold plate 146. The lower mold plate 145 is opened with a cavity 141, and the second tape body 120 can be placed in the cavity 141 and the tape body 110 can be molded. The middle die plate 146 is used for placing the belt body raw material 150, a water gap 1461 is formed on the middle die plate 146, and the belt body raw material 150 can be extruded from the water gap 1461 and then injected into the cavity 141 of the lower die plate 145 along a contact gap between the middle die plate 146 and the lower die plate 145. The upper die plate 144 can be closed over the middle die plate 146. At this time, the exposed surface 126 of the second belt body 120 is attached to the mold 140, that is, the exposed area of the first surface 123 of the second belt body 120 is attached to the middle mold plate 146, and the exposed area of the second surface 128 of the second belt body 120 is attached to the lower mold plate 145, when the belt body raw material 150 is extruded into the cavity 141, because the exposed area is attached to the mold 140, the belt body raw material 150 cannot be molded on the second belt body 120 in a covering manner, so that the outer surface of the finally formed multicolor rubber belt body 100 includes the exposed surface 126 of the second belt body 120. Further, the tape body covering surface 127 is exposed in the remaining space, that is, the side wall 124 of the second tape body 120 faces the remaining space 142 and is exposed in the remaining space 142, so that when the tape body raw material 150 is extruded into the cavity 141, since the side wall 124 of the second tape body 120 is exposed in the remaining space 142, the tape body raw material 150 can be directly covered on the side wall 124 of the second tape body 120 and the tape body covering surface 127 and is finally molded around the side wall 124 of the second tape body 120, so that the outer surface of the finally formed multicolor rubber tape body 100 does not include the tape body covering surface 127.
Further, the bottom wall of the cavity 141 formed in the lower plate 145 is stepped, and includes a first region 1412 and a second region 1413 which is sunken relative to the first region 1412.
When the second tape body 120 is placed in the cavity 141 of the mold 140, a part of the tape body covering surface 127 extends to the second zone 1413, and forms a narrow gap 143 with the inner surface of the second zone 1413; the exposed face 126 adjacent the tape body cover face 127 conforms to the inner surface of the first region 1412. When the tape body raw material 150 is injected into the remaining space 142, it can flow along the narrow slit 143 and cover the surface of the tape body covering surface 127 of the second tape body 120, and finally, it is vulcanization molded.
Further optionally, the bottom wall of the first area 1412 opposite to the bottom wall of the second area 1413 is sunken by a distance of 0.05-3 mm. For example, the bottom wall sinking distance of the first region 1412 facing the bottom wall of the second region 1413 is 0.05mm, or 0.1mm, or 1.5mm, or 2.0mm, or 2.5mm, or 3 mm.
Further, the side wall 124 of the second belt body 120 extends towards the inside of the belt body 110, optionally, the extending distance is 0.5-3 mm. Since a part of the sidewall of the second belt body 120 extends into the belt body 110, and the part of the second belt body 120 extending into the belt body 110 forms a certain barrier, the finally manufactured multicolor rubber belt body 100 has no color cross, glue overflow, saw teeth and other undesirable problems at the preset connecting interface 160 between the belt body 110 and the second belt body 120.
In the second embodiment, the exposed surface 126 is convex toward the bottom wall of the cavity 141 relative to the adjacent belt body cover surface 127. When the second tape body 120 is placed in the cavity 141 of the mold 140, a narrow slit 143 is formed between the partial tape body covering surface 127 and the inner surface of the cavity 141; the exposed surface 126 is attached to the inner surface of the cavity 141.
By placing the second tape body 120 in the cavity 141 of the mold 140, a narrow slit 143 is formed between the partial tape body covering surface 127 and the inner surface of the cavity 141; the exposed surface 126 is attached to the inner surface of the cavity 141, so that the two colors on the outer surface of the finally obtained multicolor rubber belt body 100 can be well joined without color cross.
Specifically, referring to fig. 8, in the illustrated embodiment, the second surface 129 of the second tape body 120 has a second projecting portion 1291. The second projection 1291 projects a height d1 relative to the second surface 129 such that a slot 143 is formed between the second surface 129 of the second strip 120 and the inner surface of the cavity. Optionally, the protrusion height d is 10.05-3 mm. For example, the second protrusion 1291 protrudes above the second surface 129 by a height d1 of 0.05mm, or 0.1mm, or 0.5mm, or 1.0mm, or 2.5mm, or 3 mm.
Since the second protrusion 1291 protrudes relative to the second surface 129, so that a narrow gap 143 is formed between a portion of the second surface 129 of the second belt body 120 and the inner surface of the cavity 141 of the mold 140, when the belt body raw material 150 is injected, the pressure is gradually reduced along the narrow gap 143, and thus the problems of color mixing, glue overflow and the like after molding can be effectively avoided.
Also, in this embodiment, a portion of the sidewall of the second belt body 120 extends into the belt body 110, and during the process of extruding the belt body raw material 150 into the cavity, the connection interface between the belt body 110 and the second belt body 120 is moved toward the inside of the belt body 110, so as to reduce the impact of the belt body raw material 150 on the second belt body 120, and simultaneously, due to the buffer effect of the narrow gap 143 between the surface of the portion of the second surface 129 of the second belt body 120 and the inner surface of the cavity, the undesirable problems of color running, glue overflow, saw tooth and the like of the connection interface 160 preset in the final product are avoided.
In the third embodiment, before the step of placing the second tape body 120 in the cavity 141 of the mold 140, the method further comprises: the second tape body 120 having the protrusion 125 on the exposed surface 126 and the mold 140 having the groove 1451 capable of engaging with the protrusion 125 are selected. Further optionally, the protrusion 125 is protruded on the edge of the second belt body 120.
When the second tape body 120 is placed in the cavity 141 of the mold 140, the protrusion 125 is caught in the groove 1451.
When the belt body is formed, the joint of the second belt body (soft material) and the die (steel material, hard material) is easy to have the invasion of belt body raw material, and the conditions of glue overflow, color cross, sawtooth and the like occur. Through setting up protruding 125, can prevent the invasion of taking body raw meal 150, make extrusion pressure reduce gradually, when taking body raw meal 150 to reach the predetermined interface 160 of final product, pressure reduces greatly to avoid the predetermined interface 160 of final product to appear string of colors, overflow and glue, unfavorable problems such as sawtooth.
Specifically, referring to fig. 9, in the illustrated embodiment, a ring of rib-shaped protrusions 125 is provided at the edge of the second surface 128 of the second body 120. The second strip 120 with the ribbed protrusions 125 is then placed in the cavity 141 with the second surface 128 of the second strip 120 contacting the inner surface of the cavity 141, and a mold with a groove 1451 is selected such that the ribbed protrusions 125 of the second strip 120 are received in the groove 1451 and adhere to the inner wall of the groove 1451. That is, a groove 1451 is formed on the lower mold plate 145, and the rib-shaped protrusion 125 of the second tape body 120 is engaged with the groove 1451. During molding, the raw material 150 is injected into the cavity 141 of the lower mold plate 145, and the rib-shaped protrusion 125 is used for sealing, so that the belt body 110 is finally vulcanized and molded around the second belt body 120. After the molding is finished, the rib-shaped protrusions 125 of the second belt body 120 are ground off. The multi-color rubber belt body 100 finally manufactured does not have rib-shaped bulges 125, and because the rib-shaped bulges 125 obstruct the belt body raw material in the extrusion process, the finally manufactured product does not have the problems of color mixing, glue overflow, saw teeth and the like.
Further, the step of injecting the belt body raw material 150 into the remaining space 142 includes:
the tape body raw material 150 is injected into the remaining space 142 of the cavity 141 in a direction perpendicular to the side wall 124 of the second tape body 120 and vulcanization molded.
In each of the foregoing embodiments, referring to fig. 6, the green tape material 150 is injected into the cavity 141 of the lower platen 145 along the narrow gap 143 between the middle platen 146 and the lower platen 145 in a direction perpendicular to the side wall 124 of the second tape body 120 (direction indicated by arrow in fig. 6). Since the sidewall 124 of the second belt body 120 is provided with a slope, the belt body raw material 150 can slide down along the slope of the sidewall 124 of the second belt body 120 after being injected into the cavity 141 of the lower die plate 145. That is, the molding material slides downwards from the first surface 123 of the second belt body 120 to the second surface, so that the belt body raw material 150 can sequentially fill the cavity 141 from top to bottom, thereby avoiding direct impact on the sidewall 124 of the second belt body 120 and greatly improving the molding effect.
Referring to fig. 7 to 9, the tape body raw material 150 is injected perpendicularly to the side wall 124 of the second tape body 120. The tape body slurry 150 is injected into the cavity 141 of the lower die plate 145 along the gap between the middle die plate 146 and the lower die plate 145 in a direction perpendicular to the side wall 124 of the second tape body 120.
For the embodiment shown in fig. 9, the sidewall 124 of the second tape body 120 can also be set to a certain slope according to actual needs.
Further, the hardness of the second belt body 120 and the belt body 110 after vulcanization is within the range of 60-80 degrees (shore hardness).
Illustratively, the hardness of the second belt body 120 and the belt body 110 after vulcanization are both 60 °; or the hardness of the second belt body 120 and the belt body 110 after vulcanization is 70 degrees; or the hardness of the second belt body 120 and the belt body 110 after vulcanization are both 60 °; or the second belt body 120 and the belt body 110 have a hardness of 80 ° after vulcanization.
In other embodiments, the hardness of the second belt body 120 and the belt body 110 after vulcanization may not be completely the same, for example, the hardness of the second belt body 120 after vulcanization is set to 60 °, and the hardness of the belt body 110 after vulcanization is set to 65 °.
The hardness of the vulcanized second belt body 120 and the vulcanized belt body 110 is within the range of 60-80 degrees, so that the hardness of the manufactured final product multi-color rubber belt body 100 is ensured, and the reliability, the comfort and the forming yield of the structure are ensured. Hardness ranges below or above the above range can affect the comfort of the belt and the belt formation yield.
Further, the pressure for injecting the belt body raw material 150 into the residual space 142 of the cavity and vulcanizing and molding is 30-100 tons; the vulcanization time is 4-8 minutes.
Illustratively, the pressure for injecting the belt body raw material 150 into the remaining space 142 of the cavity and vulcanization molding is 30 tons, and the vulcanization time is 8 minutes; or the belt body raw material 150 is injected into the residual space 142 of the cavity 141 and the pressure for vulcanization molding is 100 tons, and the vulcanization time is 4 minutes; or the pressure for injecting the belt body raw material 150 into the remaining space 142 of the cavity 141 and vulcanization molding is 50 tons, and the vulcanization time is 5 minutes.
In other alternative embodiments of the present application, the step S2 may be repeated, and a rubber belt body of a third color is formed on the periphery of the belt body 110, so as to obtain a rubber belt body of three colors. Of course, the above step S2 can be repeated to produce rubber tapes of different colors according to actual requirements.
Some embodiments of the present application provide a multi-colored rubber tape body 100, and the multi-colored rubber tape body 100 can be prepared by the method for preparing the multi-colored rubber tape body provided in the foregoing embodiments.
Referring to fig. 1-7, the multi-colored rubber tape body 100 includes: a second belt body 120 and a belt body 110. The second tape body 120 has an exposed surface 126 and a tape body covering surface 127. The belt body 110 is disposed around the second belt body 120 and covers the belt body covering surface 127.
Further, the second belt body 120 has a first surface 123 and an opposite second surface 128; the exposed face 126 is located on the first surface 123 and the second surface 128.
The belt body cover 127 includes the side wall 124 of the second belt body, a portion of the first surface 123, and a portion of the second surface 128.
Further, the belt body 110 covers a distance of 0.5 to 3mm from the edge of the sidewall 124 of the second belt body 120 toward the inside of the second surface 128. In the illustrated embodiment, the distance d is represented by d2 in fig. 7 and 8, i.e., d2 is 0.5-3 mm.
Further, the side wall 124 of the second band 120 has a slope 1241, and the slope 1241 is connected to the first surface 123. In other words, the ramp 1241 starts from the first surface 123 and extends in a downhill manner towards the second surface 128.
Further, the height of the slope 1241 is 1/2-2/3 of the overall height of the side wall 124 of the second belt body 120.
In other words, the ramp 1241 extends from the first surface 123 toward the second surface 128 in a downward slope manner for the entire height 1/2-2/3 of the side wall 124 of the second belt body 120.
Further, the hardness of the second belt body 120 and the hardness of the belt body 110 are both within the range of 60-80 shore hardness.
Further, the exposed surface 126 is provided with a plurality of through holes 121.
Further, the hole walls of the through holes 121 all protrude from the first surface 123, forming the first protruding portion 1231.
In the illustrated embodiment, with reference to fig. 1, 2, 4 and 7, the exposed surface 126 of the second surface 128 is flush with the surrounding belt body cover surface 127, and the cover thickness of the belt body 110 on a portion of the second surface 128 is 0.05-3 mm. That is, d1 is 0.05-3 mm in FIG. 7. Further, the first protruding portion 1231 (i.e., the protruding hole wall outer surface of the plurality of through holes 121) on the first surface 123, the first protruding portion 1231 is the exposed surface 126 on the first surface 123.
In another embodiment, with reference to fig. 1, 2, 4 and 8, the second surface 129 has a second protrusion 1291, the second protrusion 1291 is an exposed surface 126 of the second surface 129, and the covering thickness of the tape body 110 on a portion of the second surface 129 is 0.05-3 mm. Referring to fig. 8, in fig. 8, d1 is 0.05-3 mm. Further, the first protruding portion 1231 (i.e., the protruding hole wall outer surface of the plurality of through holes 121) on the first surface 123, the first protruding portion 1231 is the exposed surface 126 on the first surface 123.
Some embodiments of the present application provide a wearable device including the multi-colored rubber tape body and the device body provided in the above embodiments. The rubber belt body is connected with the device body.
For example, a smart watch, as a wearable device, includes a watch body and a multi-colored rubber band body connected to the watch body; the wearable device of motion bracelet as a, including bracelet body and polychrome rubber belt body, polychrome rubber belt body coupling is in bracelet body.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (23)
1. The preparation method of the multi-color rubber belt body is characterized in that the method is suitable for preparing the multi-color rubber belt body which comprises a belt body made of rubber with a first color and a second belt body made of rubber with other colors by adopting a mold; the surface of the second belt body is provided with a preset exposed surface and a belt body covering surface;
the preparation method comprises the following steps:
placing the second belt body in a cavity of the mold, wherein a residual space is formed around the second belt body; the exposed surface is attached to the mold, and the covering surface of the belt body is exposed to the residual space;
under the action of pressure, injecting belt body raw materials into the residual space, so that the belt body raw materials are vulcanized, molded and wrapped on the belt body covering surface of the second belt body.
2. The method for preparing a multicolored rubber belt body of claim 1,
prior to the step of placing the second strip in the cavity of the mold, further comprising: and selecting a mould matched with the second belt body, so that when the second belt body is placed in a cavity of the mould, a narrow slit communicated with the residual space can be formed between part of the belt body covering surface and the inner surface of the mould.
3. The method for preparing a multicolored rubber belt body of claim 2,
the distance between the covering surface of the belt body forming the narrow slit and the inner surface of the mold is 0.05-3 mm.
4. The method for preparing a multicolored rubber belt body of claim 2,
the extending distance from the inlet of the narrow slit to the bottom end of the narrow slit is 0.5-3 mm.
5. The method for preparing a multicolored rubber belt body of claim 2,
the bottom wall of the cavity comprises a first area and a second area sunken relative to the first area;
when the second belt body is placed in the cavity of the mold, part of the covering surface of the belt body extends to the second area, and the narrow gap is formed between the covering surface and the inner surface of the second area; the exposed surface adjacent to the belt body covering surface is attached to the inner surface of the first region.
6. The method for preparing a multicolored rubber belt body of claim 2,
the exposed surface is convex relative to the belt body covering surface adjacent to the exposed surface and faces the bottom wall of the cavity;
when the second belt body is placed in a cavity of the mold, the narrow gap is formed between part of the covering surface of the belt body and the inner surface of the cavity; the exposed surface is attached to the inner surface of the cavity.
7. The method for preparing a multicolored rubber belt body of claim 1,
prior to the step of placing the second strip in the cavity of the mold, further comprising: selecting the second belt body with a bulge on the exposed surface and a mold with a groove capable of being clamped with the bulge;
and when the second belt body is placed in the cavity of the mold, the protrusion is clamped into the groove.
8. The method for producing a multicolored rubber belt body according to any one of claims 1 to 7,
the step of injecting the raw material for the belt body into the remaining space includes:
and injecting the belt body raw material into the residual space of the cavity along a direction vertical to the side wall of the second belt body, and vulcanizing and molding.
9. The method for preparing a multicolored rubber tape body of claim 8,
the side wall of the second belt body is provided with a slope;
optionally, the height of the slope is 1/2-2/3 of the overall height of the side wall.
10. The method for preparing a multicolored rubber tape body of claim 8,
the second area body is provided with the high precompression volume of 0.05 ~ 0.3 mm.
11. The method for preparing a multicolored rubber tape body of claim 8,
the hardness of the second belt body and the belt body after vulcanization is within the range of 60-80 Shore hardness.
12. The method for preparing a multicolored rubber tape body of claim 8,
injecting the belt body raw material into the residual space of the cavity and vulcanizing and molding at the pressure of 30-100 tons; the vulcanization time is 4-8 minutes.
13. A multi-colored rubber tape body, comprising:
a second belt body having an exposed surface and a belt body covering surface; and
the belt body is arranged on the periphery of the second belt body and covers the covering surface of the belt body;
the second belt body has a first surface and an opposing second surface;
the exposed surface is located on the first surface and the second surface; the belt body covering surface includes a side wall of the second belt body, a part of the first surface, and a part of the second surface.
14. The multicolored rubber tape body of claim 13,
the exposed surface of the second surface is flush with the covering surface of the belt body around the exposed surface, and the covering thickness of the belt body on the second surface of the part is 0.05-3 mm.
15. The multicolored rubber tape body of claim 13,
the second surface has the second bulge, the second bulge is for being located the second surface the exposed surface, the area body is in the cover thickness of the second surface of part is 0.05 ~ 3 mm.
16. The multicolored rubber tape body of claim 14 or 15,
the first surface has a first protruding portion, and the first protruding portion is located on the exposed surface of the first surface.
17. The multicolored rubber tape body of any one of claims 13-15,
the distance that the area body inwards covers from the lateral wall edge of the second area body the second surface is 0.5 ~ 3 mm.
18. The multicolored rubber tape body of claim 17,
the lateral wall of the second area body has a slope surface, and the slope surface is communicated with the first surface.
19. The multicolored rubber tape body of claim 18,
the height of the slope is 1/2-2/3 of the overall height of the side wall of the second belt body.
20. The multicolored rubber tape body of claim 13,
the hardness of the second belt body and the belt body is within the range of 60-80 Shore hardness.
21. The multicolored rubber tape body of claim 16,
the exposed surface is provided with a plurality of through holes.
22. The multicolored rubber tape body of claim 21,
the hole walls of the through holes all protrude out of the first surface to form the first protruding portion.
23. A wearable device, characterized in that it comprises a multicolored rubber band body according to any of claims 13-22; and
the device body, rubber belt body connect in the device body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009161.6A CN110696278A (en) | 2019-10-22 | 2019-10-22 | Multicolor rubber belt body, preparation method thereof and wearable device |
| PCT/CN2019/118564 WO2021077499A1 (en) | 2019-10-22 | 2019-11-14 | Multi-color rubber belt body and manufacturing method therefor, and wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911009161.6A CN110696278A (en) | 2019-10-22 | 2019-10-22 | Multicolor rubber belt body, preparation method thereof and wearable device |
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| CN110696278A true CN110696278A (en) | 2020-01-17 |
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| CN201911009161.6A Pending CN110696278A (en) | 2019-10-22 | 2019-10-22 | Multicolor rubber belt body, preparation method thereof and wearable device |
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| WO (1) | WO2021077499A1 (en) |
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| CN115256755A (en) * | 2022-06-27 | 2022-11-01 | 歌尔股份有限公司 | Forming die and forming method |
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| WO2021077499A1 (en) | 2021-04-29 |
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Application publication date: 20200117 |