TWI684492B - Alignment fixture and outside mold decoration method using the same - Google Patents

Abstract

The present invention relates to an alignment fixture, which is applied to an outside mold decoration method, comprising: a base body; an article positioning module configured on the base body and providing for an article to position on the base body; and a film positioning module configured on the base body and providing for a film to position on the base body, wherein a relative position between the film and the work piece is determined through the work piece positioning module and the film positioning module.

Description

Alignment jig and method of external decoration using the same

The invention relates to an alignment jig, in particular to an alignment jig applied to an outer mold decoration method.

In recent years, exterior mold technology has been adopted for interiors of cars, 3C devices, notebook computers, tablets, smart phones, etc., as well as nameplates for home appliances, nameplates for washing machines, nameplates for automobiles, dashboards, locomotives, and building materials. decoration, OMD) to improve the overall appearance ratio is higher and higher, because OMD can be applied to a variety of materials, can adapt to a variety of product appearance, from irregular shapes, three-dimensional, chamfering, R angle , The bottom, to complex curved surfaces, etc., can also give the product a special texture and touch on the outer surface, and rich decorative patterns, diverse colors, can also achieve a small variety of production, and meet the pursuit of environmental protection.

OMD technology is also called high-pressure transfer or vacuum high-pressure thermal transfer. Because of its different treatments for decorative films, it is roughly divided into outside mold forming (OMF) and outside mold release (outside mold release) technologies. , OMR) two, OMF technology after the film is hot-pressed, because the decorative film has been wrapped on the material, so it is necessary to use the post-cutting process to cut off the excess film from the material, OMF technology is commonly used in decorative film The materials are ABS, PVC, PET, PU, etc., and the final decorative layer thickness is about 0.2mm~0.4mm; after the OMR technology is formed by hot pressing of the film, it is generally necessary to cure the outer protective layer with ultraviolet light (UV), and then Release film from The material is torn apart, but does not need to be die-cut in the rear section. The common materials of OMR technology decorative films are PET, PC, PO, etc. Because the thickness of the release film is reduced, the final decorative layer thickness can be controlled to less than 0.05mm.

Figures 1 and 2 are schematic diagrams showing the conventional external mold decoration process; the conventional external mold decoration process, as shown in Figure 1, the conventional OMD equipment includes a lower mold heating plate 10, a mold frame 20, and an upper mold heating plate 30 , OMD decorative film 40, OMD mold 50, etc., the material 60 to be processed outside the mold is placed on the mold 50, when the material 60 is placed on the mold 50, and the mold 50 and the material 60 are on the lower mold heating plate 10 After positioning, the OMD decorative film 40 is sandwiched between the mold frame 20 and the upper mold heating plate 30, and then the lower mold heating plate 10 and the upper mold heating plate 30 are closed, and the lower mold heating plate 10 and the upper mold heating plate 30 are closed. , And a cavity H is formed between the mold frames 20.

As shown in FIG. 2, the OMD equipment starts to evacuate the cavity H from the lower mold heating plate 10 and pressurize the OMD decorative film 40 through the upper mold heating plate 30, and simultaneously synchronize the lower mold heating plate 10 and the upper mold heating plate 30 The OMD decorative film 40 and the material 60 are heated. During the process, the OMD decorative film 40 is forced to cover the material 60 and adhere closely to the surface of the material 60. After the process is completed, the pressure relief and vacuum are broken, and the decorative material 60 is removed from the OMD equipment. Take out; if OMR technology is used and the OMD decorative film 40 is a release film, continue the steps of UV curing and removal of the release film. If OMF technology is used, cut the OMD decorative film 40 so that its outline can conform to The outline of the material.

However, in the existing OMD technology, since the decorative film is only clamped on the mold frame and is not aligned with the material in any position, the existing OMD technology can only transfer the pattern layer, the decorative layer or the coating layer to the material , But the decorative pattern cannot be accurately positioned on the material, so currently OMD products can only use patterns without alignment requirements, such as: monochrome, gradient, regular patterns, or random patterns, in other words, if you want to mark, or The pattern of Mickey Mouse is accurately positioned on the material, which cannot be achieved by the existing OMD technology.

Therefore, in order to solve the problem that the existing OMD technology cannot achieve the position of the pattern and form a more refined and beautiful appearance on the surface of the product, the applicant after careful testing and research, and a persevering spirit, finally conceived the case of "positional governance "A method of decorating with a mold and using it" can overcome the above shortcomings. The following is a brief description of the present invention.

The invention of the present invention proposes a new jig structure, which includes a special alignment jig, which can position an OMD (outside mode decoration) film with an alignment pattern on the jig, so that the finished product and pattern can be accurately positioned, and then passed through the general In the OMD process, another general film with no pattern requirements is fixed on the machine platform, and the general film is wrapped on the OMD decorative film with the alignment pattern through vacuum pressure, and fixed on the finished product together to complete the pattern. The purpose of positioning on the finished product.

According to this, the present invention proposes an alignment fixture, which is applied to an outer mold decoration method and includes: a body; a work positioning module, which is provided on the body and provides work positioning on the body; and a film positioning mold Set, which is arranged on the body and provides film positioning on the body, and the workpiece and the film determine the relative positions between each other through the workpiece positioning module and the film positioning modules.

Preferably, the body further includes one of the following: a bulge whose height is higher than the height of the workpiece positioning module and provides the arrangement of the film positioning module; and a plurality of air holes that penetrate the body and allow gas Flow in it.

Preferably, the workpiece positioning module is a workpiece carrier, and its outline conforms to the outer shape of the workpiece to provide positioning of the workpiece on the body. The film positioning module includes a plurality of film positioning pins to provide the film It is located on the body.

Preferably, the external decoration method is based on external decoration technology, external decoration technology, external film release technology, external film forming technology, external film 3D imprinting technology, external film 3D transfer technology, external film 3D vacuum Molding technology, 3D surface decoration technology outside the film, vacuum film transfer technology outside the film, high pressure molding technology outside the film, high pressure technology outside the film, pressure forming technology outside the film, pressure transfer technology outside the film, vacuum outside the film High-pressure thermal transfer technology, and one of its combinations.

Preferably, the appearance characteristics of the workpiece to be presented have been pre-formed on the film.

Preferably, the alignment jig further includes: the body, further comprising: a first body; and a second body, which determines the relative positions of the first body and the first body through a pair of positioning members; The workpiece positioning module is disposed on the first body and provides workpiece positioning on the first body; and the film positioning module is disposed on the second body and provides film positioning on the second body.

Preferably, the pair of positioning members further includes a first positioning member and a second positioning member, wherein the first positioning member is disposed on the first body, the second positioning member is disposed on the second body, and the The first positioning member and the second positioning member can maintain the relative position of each other in a determined state; and the first body further includes a recessed portion, wherein the height of the recessed portion is lower than the height of the workpiece positioning module, so that when When the first body and the second body are combined, they are located at the junction of the first body and the second body, and are formed by the first body and the second body together, and the first surface for carrying the thin film can Keep it flat.

According to this, the present invention further proposes an over-mold decoration method, which includes: providing an over-mold decoration machine, the over-mold decoration machine including a lower template; providing an alignment jig, the alignment jig including a workpiece positioning module, and a film positioning Module; positioning the workpiece on the alignment jig through the workpiece positioning module; positioning the film on the alignment jig through the film positioning module; and the pair Place the fixture under this template.

10‧‧‧Lower mold heating plate

20‧‧‧Mold frame

30‧‧‧ Upper mold heating plate

40‧‧‧OMD decorative film

50‧‧‧OMD mold

60‧‧‧ material

100‧‧‧positioning fixture

111‧‧‧ first body

112‧‧‧Second body

110‧‧‧Body

120‧‧‧Bulge

125‧‧‧Depression

130‧‧‧Film positioning pins

140‧‧‧Workpiece carrier

150‧‧‧Blowhole

161‧‧‧First positioning piece

162‧‧‧Second positioning piece

171‧‧‧Elastic element

210‧‧‧ First film

211‧‧‧ film substrate

212‧‧‧Protective layer

213‧‧‧Decorative layer

214‧‧‧Next layer

215‧‧‧Locating point

216‧‧‧ trademark pattern

217‧‧‧Great arc

218‧‧‧small arc

220‧‧‧Second film

300‧‧‧Workpiece

310‧‧‧Back

320‧‧‧Side

330‧‧‧ Edge

340‧‧‧Main camera lens opening

350‧‧‧ camera lens opening

400‧‧‧Mold decoration machine

410‧‧‧ Lower template

411‧‧‧ heating rod

420‧‧‧Mold frame

430‧‧‧Up template

431‧‧‧ heating rod

500‧‧‧Tear

C1‧‧‧ color block

C2‧‧‧ color block

A‧‧‧First chamber

B‧‧‧The second chamber

H‧‧‧ chamber

S‧‧‧First surface

Step 2011‧‧‧ Provide an over-mold decoration machine including upper template, lower template, mold frame, second film, air pressure control module and heating module

Step 2012‧‧‧ Provide a positioning jig, which includes a workpiece positioning module and a film positioning module

Step 2013‧‧‧positioning the workpiece on the positioning jig through the workpiece positioning module

Step 2014‧‧‧position the first film on the alignment jig through the film positioning module, so that the workpiece and the first film pass through the workpiece positioning module and the films included in the alignment jig Position the modules to determine their relative positions

Step 2015‧‧‧ Place the alignment jig on the lower template and fix the second film on the mold frame

Step 2016 ‧‧‧ causes the upper template and the lower template to clamp the second film, and forms a first airtight cavity between the lower template, the mold frame and the second film, and the upper template, A second airtight cavity is formed between the mold frame and the second film, and the alignment fixture is contained in the first airtight cavity

Step 2017‧‧‧ The air pressure control module applies negative pressure to the first airtight cavity and the second airtight cavity, and at the same time uses the heating module to the first airtight cavity and the second airtight cavity , Heating together with the included workpiece, the first film, and the second film

Step 2018‧‧‧After a period of time, break the vacuum state of the second airtight cavity and immediately apply positive pressure to the second airtight cavity, so that the first film and the second film cover the workpiece Most surfaces

Step 2019‧‧‧ Cool down and break the vacuum state of the first airtight chamber

Fig. 1 and Fig. 2 are schematic diagrams showing the process of conventional overmold decoration; Fig. 3 is a schematic diagram showing the planar structure of the first embodiment of the alignment jig of the present invention; Fig. 4 is a diagram showing the alignment jig of the present invention. 3 is a schematic diagram of a side cross-sectional structure on the WW' cross-sectional line shown in FIG. 3; FIG. 5 is a schematic plan view of the first embodiment of the alignment jig of the present invention in use; FIG. 6 is a schematic view of the alignment jig of the present invention. Figure 5 shows a side cross-sectional structure on the XX' cross-sectional line and a schematic diagram inside the overmold decoration machine; Figure 7 is a schematic side sectional structure diagram showing the working state of the alignment jig of the present invention in the overmold decoration machine; FIG. 8 is a schematic diagram showing the planar structure of the second embodiment of the alignment jig of the present invention; FIG. 9 is a schematic diagram showing the side cross-sectional structure of the alignment jig of the invention on the YY′ section line shown in FIG. 8; FIG. 10 Fig. 11 is a schematic diagram showing the planar structure of the second embodiment of the alignment jig of the present invention in use; FIG. 11 is a diagram showing the ZZ' cross-sectional line shown in FIG. 10 of the second embodiment of the alignment jig of the invention in use. A schematic diagram of a side cross-sectional structure; FIG. 12 is a schematic diagram showing the side cross-sectional structure of the alignment jig of the present invention on the ZZ′ cross-sectional line shown in FIG. 10, and a schematic diagram in an over-mold decoration machine; Figure 13 is a schematic diagram showing the side cross-sectional structure of the working state of the positioning jig of the present invention in the outer mold decorating machine; Figure 14 is a schematic plan view of the workpiece without surface decoration of the present invention; Figure 15 is a schematic view of the invention Figure 16 is a schematic plan view of the surface-decorated workpiece; Figure 16 is a schematic diagram showing the side cross-sectional structure of the first film of the present invention; Figure 17 is a schematic plan view of the first film of the present invention; Fig. 19 is a three-dimensional schematic diagram of a workpiece whose surface is decorated by a jig; Fig. 19 is a three-dimensional schematic diagram showing a tearing gap at the edge of a workpiece using conventional surface decoration technology; and Fig. 20 is a method for decorating the mold of the present invention Flow chart of implementation steps.

The present invention will be fully understood by the following examples, so that those skilled in the art can complete it. However, the implementation of the present invention is not limited by the following examples and its implementation forms; The size, size, and scale are not included in the limitation. The size, size, and scale of the present invention are not limited by the drawings of the present invention.

The term "preferred" in this article is non-exclusive and should be understood as "preferred but not limited to". Any steps described or recorded in any specification or request can be performed in any order, not limited to the description in the request The sequence of the present invention should be determined only by the appended claims and their equivalents, and not by the examples of implementation examples; when the term "comprising" and its variations appear in the description and claims, An open language, not restrictive Meaning, does not exclude other features or steps.

Figure 3 is a schematic plan view of the first embodiment of the alignment jig of the present invention; Figure 4 is a schematic cross-sectional structure view of the alignment jig of the present invention on the WW' section line shown in Figure 3; Figure 5 It is a schematic diagram showing the planar structure of the first embodiment of the alignment jig of the present invention in use; FIG. 6 is a side sectional structure of the alignment jig of the invention on the XX′ section line shown in FIG. 5 and the mold Figure 7 is a schematic diagram of the exterior decoration machine; and Figure 7 is a schematic diagram of the side cross-sectional structure of the working state of the alignment fixture of the present invention in the mold exterior decoration machine; Figure 16 is a schematic diagram of the side cross-sectional structure of the first film of the invention; Figure 17 is a schematic plan view of the first film of the present invention.

As shown in FIGS. 3 and 4, the positioning jig 100 of the present invention includes a body 110, a bulge 120, a plurality of film positioning pins (film positioning modules) 130, and a workpiece stage (work positioning module) 140 , Air holes 150 and other structures, the positioning fixture 100 has a basic body 110, the shape of the body 110 is preferably but not limited to a polygon, mainly as a thick base, a workpiece carrier 140 is formed in the center, the workpiece The stage 140 is used to carry the workpiece 300 to be surface-decorated. Therefore, the structure, contour, and shape of the workpiece stage 140 and the structure, contour, and shape of the workpiece 300 will be consistent, corresponding, or conformal. In this embodiment, the workpiece 300 is disclosed in FIG. 14 and is preferably a smartphone back cover. The surface of the workpiece 300 in FIG. 14 has not been surface-decorated, and includes a back 310, a side 320, an edge 330, and a main The structure of the camera lens opening 340 and the sub-camera lens opening 350, etc., therefore, the structure, contour and shape of the workpiece stage 140 conform to the structure, contour and shape of the workpiece 300, and serve as a platform for stably placing the workpiece 300 to be processed.

The body 110 has ridges 120 around the film, and the film positioning pins 130 are disposed on the ridges 120. The ridges 120 can increase the height of the film positioning pins 130 so that the height of the film positioning pins 130 is higher than the workpiece stage 140, the first film (Film) 210 will be fixed on the film positioning pin 130 It is fixed on the positioning jig 100. Since the relative position between the film positioning pin 130 and the workpiece stage 140 is fixed and fixed, the first position fixed on the positioning jig 100 through the film positioning pin 130 is A thin film 210 can be accurately aligned and determined relative to the workpiece 300 placed on the workpiece stage 140, so the first thin film 210 can be accurately aligned with the workpiece 300. Inventing the alignment jig 100 can achieve precise alignment between the first film 210 and the workpiece 300.

The first film 210 is preferably a decorative film used to form the main appearance features of the workpiece 300. The decorative appearance features formed on the first film 210 preferably need to be accurately aligned with the workpiece 300, but The first film 210 may also be a general film, or it may be a blank film, or it may also be a pattern film, but there is no requirement for alignment with the workpiece 300.

In this embodiment, as disclosed in FIG. 16, the first film 210 mainly includes a film substrate 211, a decorative layer 213, and an adhesive layer 214. The protective layer 212 is a selective layer structure. OMF) is the main film coating technology, or the film substrate 211 is a non-releasing film, the first film 210 can optionally include or not include the protective layer 212, when adopting OMF-based technology, or the first film 210 When the outer layer will be covered with another second film (220), the first film 210 may choose not to include the protective layer 212, when the film tearing technology based on OMR is adopted, or the film base 211 is separated When the type film (including the base film and the release agent) is to be removed later, the first film 210 may optionally include a protective layer 212, and the protective layer 212 is preferably a layer of ultraviolet (UV) photosensitive coating.

The decorative layer 213 of the first film 210 has been preliminarily printed, coated, surface treated, etc., and will eventually be displayed on the workpiece 300 (artwork), or other items displayed Viewing decorative features, including: lines, text, symbols, gradient colors, patterns, colors, color blocks, patterns, lines, decorative patterns, logo patterns, trademark patterns, three-dimensional decorative layers, texture layers, tactile layers, functions Layer, functional layer, or a combination of the above, etc., pre-processed and formed on the film substrate 211 or the protective layer 212, the decorative layer 213 itself may preferably also include a multi-layer structure, and then the layer 214 is coated on the decorative layer 213 and will work with the workpiece 300 In contact, the first film 210 and the workpiece 300 are bonded through the adhesive layer 214 and bonded by hot pressing. The adhesive layer 214 is preferably a hot melt adhesive layer or a back adhesive layer.

As shown in FIG. 17, a plurality of positioning points 215 have been pre-fabricated on all four sides of the first film 210, and its implementation structure may preferably be dot marks, or micro openings, etc. The positions of the plurality of positioning points 215 are aligned A plurality of film positioning pins 130 of the positioning jig 100 are used as an indicator mark for positioning the first film 210 on the positioning jig 100, so that the first film 210 can pass through the positioning jig 100 and the workpiece 300 Accurate positioning can be completed in time, so that the patterns, trademarks, color blocks, etc. designed and formed on the first film 210 can be accurately aligned to the design position of the workpiece 300. In the OMF-based process, it can also be Separation lines SL1, SL2 (two-point chain line) are formed on a thin film 210 in advance, and the shapes of the separation lines SL1, SL2 will correspond to the structure, contour, and shape of the workpiece 300, so that the first thin film 210 that is not needed is removed from the workpiece at the end of the process Removed on 300.

In this embodiment, the first film 210 has been pre-printed with a color block C1, a color block C2, and a trademark pattern 216, and a large arc 217 and a small arc 218 formed by design at the junction of the color block C1 and the color block C2, Corresponding to the workpiece 300, ie, the back and side of the smartphone back cover, the trademark pattern 216 has been pre-designed to correspond to a specific location on the workpiece 300, ie, the back of the smartphone back cover, pre-made on the first film 210 Offline SL1 corresponds to the edge of the smartphone back cover, and the separation line SL2 corresponds to the size of the camera lens of the smartphone back cover.

As shown in FIG. 5, when the positioning jig 100 of the present invention is actually used, the workpiece 300 is placed on the workpiece stage 140, and the multiple positions of the first film 210 are positioned according to the instructions provided by the multiple positioning points 215 The point 215 is placed on the film positioning pin 130 to fix the first film 210 on the positioning jig 100 and determine the relative position between the first film 210 and the workpiece 300 so that the first film 210 is designed and formed in advance The color block C1, color block C2, separation line SL1, separation line SL2, trademark pattern 216, large arc 217, and small arc 218 can be accurately aligned to the corresponding structure, contour and shape of the workpiece 300 according to the design In order to prepare as a decorative outer layer or a functional outer layer of the workpiece 300.

As shown in FIG. 6, after the workpiece 300 and the first film 210 are positioned on the alignment jig 100, the alignment jig 100 and the workpiece 300 and the first film 210 contained therein are moved into the overmold decoration machine 400 On the lower template 410, a second film 220 is sandwiched on the mold frame 420. The second film 220 is a film that does not need to be aligned with the workpiece 300, preferably a protective film, or a general film, which is in contact with the first film Between 210, you can choose to stick or not to stick, and then the upper template 430 and the lower template 410 are closed (mold), then a sealed chamber is formed between the lower template 410, the mold frame 420, and the upper template 430, this sealed chamber The second film 220 is divided into a first chamber A and a second chamber B.

The extra-mold decoration machine 400 starts to apply negative pressure (evacuation) to the first chamber A and the second chamber B with the air pressure control module. During the process, the heating rods (heating) contained in the lower template 410 and the upper template 430 are simultaneously heated. Modules) 411 and 431 start to heat the first chamber A, the second chamber B, together with the first film 210, the second film 220, the workpiece 300, etc. contained in it, according to different processes and material characteristics, heating Preferably, the process may choose to use different temperatures in stages. During vacuuming and heating, the first film 210 is only kept above the workpiece 300 but does not touch the workpiece 300. The heating process will activate the adhesive layer on the first film 210, Or the adhesive layer on the second film 220 (if Yes), the over-mold decoration machine 400 can be OMD equipment, OMR equipment, OMF equipment, 3D imprint equipment, 3D transfer equipment, 3D vacuum forming machine, vacuum envelope transfer machine, high pressure forming machine, high pressure transfer machine, Pressure molding machine, pressure transfer machine, vacuum high pressure heat transfer machine, or 3D surface decoration machine, etc.

As shown in FIG. 7, after a period of time, the vacuum state of the second chamber B is broken and a high pressure is immediately applied to the second chamber B and the negative pressure state of the first chamber A is maintained. During the process, the second film 220 is forced to The first film 210 quickly moves toward the lower template 410 and begins to closely cover and conform to most of the outer surface of the workpiece 300 according to the contour and shape of the workpiece 300. After the coating is completed, the first film 210 The color block C1, color block C2, trademark pattern 216, large arc 217, and small arc 218 have all been accurately aligned and transferred to the workpiece 300. After the process is completed, the temperature is reduced, the first chamber A vacuum is broken, You can take out the workpiece 300 covered with the first film 210 and the second film 220 after removing the second film 220. After removing the second film 220, if the OMF technology is adopted, the operator only needs to simply follow the separation line SL1. The first film 210 is separated from the workpiece 300 without a punching process. If OMR technology is adopted, the second film 220 is a release film, and only the film substrate needs to be peeled from the pattern layer.

FIG. 14 is a schematic plan view of the workpiece without surface decoration of the present invention; FIG. 15 is a schematic plan view of the workpiece with surface decoration of the present invention; as shown in FIGS. 14 and 15, the workpiece 300 in this embodiment It is preferably a smartphone back cover. When the workpiece 300 has not been subjected to surface decoration, as shown in FIG. 14, the workpiece 300 includes a back 310, a side 320, an edge 330, a main camera lens opening 340, a sub camera lens opening 350, etc. Structure, the surface of the workpiece 300 without surface decoration treatment only exhibits a single tone. When the workpiece 300 is finished with surface decoration treatment, as shown in FIG. 15, the workpiece 300 has been covered with the second film 220 and the first film 210, Because the process of decorating the first film 210 on the surface is through the alignment jig 100 of the present invention and the workpiece 300 Accurate positioning, so the separation line SL1 on the first film 210 has been accurately aligned to the edge 330 of the workpiece 300, the separation line SL2 is accurately aligned to the workpiece 300, the size of the camera lens 340 and 350, and the large arc 217 is accurately aligned to the back of the workpiece 300 310 and the small arc 218 are accurately aligned to the side 320 of the workpiece 300, and the color block C1, the color block C2, and the trademark pattern 216 are accurately positioned to the design position on the workpiece 300.

Figure 8 is a schematic plan view of the second embodiment of the alignment jig of the present invention; Figure 9 is a schematic side sectional view of the alignment jig of the present invention on the YY' cross-sectional line shown in Figure 8; Figure 10 FIG. 11 is a schematic diagram showing the planar structure of the second embodiment of the alignment jig of the present invention when in use; FIG. 11 is a ZZ′ section line shown in FIG. 10 when the second embodiment of the alignment jig of the invention is in use FIG. 12 is a schematic diagram of the side cross-sectional structure; FIG. 12 is a schematic diagram of the side cross-sectional structure of the alignment jig of the present invention on the ZZ′ cross-sectional line shown in FIG. Schematic diagram of the side cross-sectional structure of the working state of the alignment jig in the decoration machine outside the mold.

As disclosed in FIGS. 8 and 9, the second embodiment of the present invention is based on the first embodiment, but the body of the alignment jig 100 further includes two separate bodies, namely the first body 111, and The second body 112, wherein the first body 111 includes a recess 125, a workpiece stage 140, an air hole 150, a first positioning member 161, an elastic element 171 and other structures, and the second body 112 includes a film positioning pin 130 and a second positioning member 162 The first body 111 is similar to the body 110 of the first embodiment, and is mainly used as a thick base, while the second body 112 is a flat frame-like structure that is lighter and thinner than the first body 111 It is mainly used to set the film positioning pins 130 provided for fixing the first film 210. The first body 111 and the second body 112 are preferably aligned with each other through a paired positioning member, and They are combined in such a way that they do not create substantial connections or connections; preferably, the first film 210 can be installed on the film positioning pins 130 of the body 112 first, because The second body 112 is relatively lighter and thinner than the first body 111, and it is relatively easy for the operator to perform the operation process of fixing the first film 210 on the film positioning pins 130. After the first film 210 is installed on the second body 112, then pass through The positioning member combines the second body 112 with the first body 111, and then the positioning jig 100 is placed in the mold decoration machine for operation.

The pair of positioning members preferably includes a paired first positioning member 161 and a second positioning member 162. The first positioning member 161 only needs to be in contact with the second positioning member 162 and can be opposed to each other The position can be maintained at a certain level. It is not necessary to form a secured, fixed, or fastened connection, but the first positioning member 161 only needs to be between the second positioning member 162 The connection can be formed in a locked, fixed, or held state. For example, in this embodiment, the first positioning member 161 is a socket, and the second positioning member 162 is a pin. The pins are inserted into the socket to make contact with each other, and The relative position between each other can be determined, but there is no connection between the pin and the socket in a locked, fixed or tight state. Such a positioning member is convenient for the operator to easily assemble the second body 112 to the first body 111; or, for example: the first positioning member 161 may be a screw hole, the second positioning member 162 is a screw, the screw is locked into the screw hole to produce mutual contact, and at the same time form a locked, fixed or held state with each other link.

When using the method for decorating the mold 100 of the present invention, as shown in FIGS. 10 and 11, first place the workpiece 300 on the workpiece stage 140 of the first body 111, and then place the first film 210 After being installed on the second body 112 through the plurality of film positioning pins 130 on the second body 112, after the installation of the first film 210, the color block C1, the color block C2, and the separation line formed on the first film 210 are designed and formed in advance SL1, separation line SL2, trademark pattern 216, large arc line 217, and small arc line 218 can be accurately aligned to the corresponding structure, contour and shape of the workpiece 300 according to the design to prepare for the decorative outer layer or function of the workpiece 300 Sexual outer layer.

As disclosed in FIG. 11, the second positioning members 162 on the second body 112 are aligned with the corresponding first positioning members 161 on the first body, and then the second body 112 is passed through the second positioning members 162 The first positioning member 161 is combined with the first body 111, but due to the elastic supporting force provided by the plurality of elastic elements 171 included on the first body 111, the second body 112 is preferably temporarily between the first body 111 Maintain a small distance D. The distance D is preferably such that the first film 210 can be as close as possible to the workpiece 300 but not touch the workpiece 300, so that the first film 210 can be suspended above the workpiece 300.

As shown in FIG. 12, the positioning jig 100 including the first body 111, the second body 112, the workpiece 300, the first film 210 and the like is moved into the lower mold 410 of the over-mold decoration machine 400 and clamped on the mold frame 420 Into the second film 220, and then the upper mold 430 and the lower mold 410 are closed, at this time, the first chamber A and the second chamber B are formed between the lower mold 410, the mold frame 420, and the upper mold 430, and the over-mold decoration machine 400 starts Simultaneously evacuate the first chamber A and the second chamber B, and simultaneously heat the first chamber A, the second chamber B, and the first film 210, the second The film 220 and the workpiece 300 are all heated together. During the vacuuming and heating process, the first film 210 remains suspended above the workpiece 300 without touching the workpiece 300. The heating process will start to activate the subsequent layer on the first film 210 Or an adhesive layer on the second film 220 (if any).

As shown in FIG. 13, after a period of time, the vacuum state of the second chamber B is broken and a high pressure is immediately applied to the second chamber B and the negative pressure state of the first chamber A is maintained. During the process, the second film 220, the second A thin film 210 is subjected to a strong gas pressure, forcing the second thin film 220 and the first thin film 210 to quickly move toward the lower template 410, driving the second body 112 to press down into the first body 111, and at the same time the second thin film 220, the first The thin film 210 begins to closely cover and conform to most of the outer surface of the workpiece 300 according to the contour and shape of the workpiece 300.

Since the first body 111 further includes a concave portion 125, the height of the concave portion 125 is substantially equal to the thickness of the second body 112, and its shape in the projection direction is substantially the same as the shape of the second body 112, so when the second After the body 112 is pushed down into the first body 111, it is located at the junction of the first body and the second body, and is formed by the first body and the second body for carrying the first film 210 and the second film The first surface S of 220 can be kept substantially flat, together with the first film 210 and the second film 220 carried on the first surface S can be kept flat, which helps reduce the sticking of the first film 210 and the second film 220 The tension experienced during the closing process.

After the coating is completed, the color block C1, the color block C2, the trademark pattern 216, the large arc 217, and the small arc 218 on the first film 210 will be accurately positioned on the workpiece 300, and then a period of cooling, After breaking the first chamber A vacuum and opening the mold, you can take out the workpiece 300 that has been coated with the first film 210 and the second film 220, because most of the first film 210 and the second film 220 are covered in The thin second body 112 can be easily removed from the workpiece 300 regardless of OMF technology or OMR technology.

Figure 18 is a perspective schematic view showing the edge of the workpiece using the positioning fixture of the present invention for surface decoration; Figure 19 is a perspective schematic view showing the tearing gap generated at the edge of the workpiece using the surface decoration technology; According to the invention, the positioning jig 100 can accurately position the workpiece 300 and the first film 210, so the separation lines SL1 and SL2 can be accurately prepared on the first film 210 in advance. When the second film 220 and the first film 210 To separate from the work 300, the operator only needs to separate the second film 220 and the first film 210 from the work 300 along the separation line SL1, and when the second film 220 and the first film 210 are to be separated from the work 300, such as As shown in FIG. 18, when the side 320 of the workpiece 300 is close to the edge 330, the coated second film 220 and the first film 210 will not have uneven or zigzag tears. Showing smooth and The flat edge 330, but in the conventional technology, because the film and the workpiece 300 cannot be accurately positioned, the position of the edge of the workpiece cannot be determined on the film, so the separation line cannot be made on the film in advance, resulting in the film and the workpiece 300 After separation, as shown in FIG. 19, when the side 320 of the workpiece 300 is close to the edge 330, an uneven or jagged tearing gap 500 may appear on the coated film.

FIG. 20 is a flowchart showing the steps of the method for decorating the mold of the present invention; the method for decorating the mold of the present invention includes the following steps:

Step 2011: provide an outer mold decoration machine including an upper template, a lower template, a mold frame, a second film, an air pressure control module, and a heating module; Step 2012: provide an alignment jig including the workpiece positioning mold Group, and film positioning module; step 2013: positioning the workpiece on the alignment jig through the workpiece positioning module; step 2014: positioning the first film on the alignment jig through the film positioning module, To make the workpiece and the first film determine the relative position between each other through the workpiece positioning module and the film positioning modules included in the alignment jig; Step 2015: place the alignment jig under the The template and the second film are fixed to the mold frame; Step 2016: the upper template and the lower template are clamped to the second film and are formed between the lower template, the mold frame and the second film A first airtight cavity, and a second airtight cavity is formed between the upper template, the mold frame and the second film, the alignment fixture is included in the first airtight cavity; Step 2017: The air pressure control module applies a negative pressure to the first airtight cavity and the second airtight cavity, and simultaneously uses the heating module to the first airtight cavity, the second airtight cavity, and the included workpiece , The first film, and the second film are heated; step 2018: after a period of time, the vacuum state of the second airtight cavity is broken and a positive pressure is applied to the second airtight cavity immediately to make the first film And the second film covers most of the surface of the workpiece; and step 2019: lower the temperature and break the vacuum state of the first airtight chamber.

In summary, the present invention proposes and designs a new alignment fixture structure, which is placed inside the main mold of the OMD machine in use, and becomes the alignment mold used in the main mold, which can be regarded as a mold in concept The configuration concept of mold in mold or dual mold, the proposed fixture structure includes a special alignment fixture, which can locate the OMD (outside mode decoration) film with the alignment pattern On the jig, the finished product and the pattern can be accurately positioned, and then through the general OMD process, another piece of general film without pattern requirements is fixed on the machine platform, and the general film is wrapped on the The OMD decorative film of the pattern is fixed on the finished product together to complete the purpose of positioning the pattern on the finished product.

The invention has the following obvious technical effects: (1) It can be applied to any OMD technology, including OMF technology and OMR technology, so that the decorative patterns that need to be accurately aligned with the workpiece (finished product, product, terminal product) can be accurately positioned on the workpiece However, the conventional OMD technology can not be achieved; (2) The present invention does not need to use high-cost conventional OMD alignment pattern film, only need to use the general release film prefabricated decorative pattern, which can greatly increase the film utilization rate, reduce film cost, reduce The overall cost of the process; (3) the alignment fixture of the present invention can be used directly on various conventional OMD machines, which is fully compatible and suitable for all existing OMD processes; (4) in a simple, direct and low-cost method, in OMD In the technology, the decorative pattern is accurately positioned on the workpiece.

The above embodiments of the present invention can be arbitrarily combined or replaced with each other, so as to derive more implementation forms, but all do not deviate from the scope of the present invention, and further provide more embodiments of the present invention:

Embodiment 1: An alignment jig, which is applied to an outer mold decoration method, and includes: a body; a work positioning module, which is provided on the body, and provides work positioning on the body; and a film positioning module , Which is arranged on the body and provides a film to be positioned on the body, The workpiece and the film determine the relative positions of each other through the workpiece positioning module and the film positioning modules.

Embodiment 2: The positioning jig as described in Embodiment 1, wherein the body further includes one of the following: a raised portion whose height is higher than the height of the workpiece positioning module, and provides the configuration of the film positioning module ; And a plurality of air holes, which penetrate the body and allow gas to flow therein.

Embodiment 3: The positioning jig as described in Embodiment 1, wherein the workpiece positioning module is a workpiece stage, and its outline conforms to the outer shape of the workpiece to provide the workpiece positioning on the body and the film The positioning module includes a plurality of film positioning pins to provide positioning of the film on the body.

Embodiment 4: The alignment jig as described in Embodiment 1, wherein the external mold decoration method is based on external mold decoration technology, external mold decoration technology, external film release technology, external film forming technology, and external film 3D imprinting Technology, 3D transfer technology outside the film, 3D vacuum forming technology outside the film, 3D surface decoration technology outside the film, vacuum film transfer technology outside the film, high pressure molding technology outside the film, high pressure transfer technology outside the film, pressure molding outside the film One of technology, pressure transfer technology outside the film, vacuum high pressure heat transfer technology outside the film, and combinations thereof.

Embodiment 5: The alignment jig as described in Embodiment 1, wherein the appearance features of the workpiece to be presented are pre-formed on the film, and lines, characters, symbols, and symbols corresponding to the workpiece are pre-formed on the film Gradient color, pattern, color, color block, pattern, texture, decorative pattern, logo pattern, trademark pattern, three-dimensional decorative layer, texture layer, tactile layer, functional layer, functional layer, and combinations thereof.

Embodiment 6: The positioning fixture as described in Embodiment 1, further comprising: the body, further comprising: a first body; and a second body, which is between the first body through a pair of positioning members Determine the relative positions of each other; the workpiece positioning module, which is provided on the first body, and provides the workpiece to be positioned on the first body; and the film positioning module, which is provided on the second body, and provides the The film is positioned on the second body.

Embodiment 7: The positioning jig as described in Embodiment 6, wherein the pair of positioning members further includes a first positioning member and a second positioning member, wherein the first positioning member is disposed on the first body, the first Two positioning members are disposed on the second body, and the first positioning member and the second positioning member can maintain the relative position of each other in a determined state; and the first body further includes a recessed portion, wherein the height of the recessed portion It is lower than the height of the workpiece positioning module, so that when the first body and the second body are combined, they are located at the junction of the first body and the second body, and are shared by the first body and the second body The first surface formed and provided for carrying the thin film can be kept substantially flat.

Embodiment 8: An extra-mold decoration method, comprising: providing an extra-mold decoration machine, the outer-mold decoration machine including a lower template; providing an alignment jig, the alignment jig including a workpiece positioning module and a film positioning module Positioning the workpiece on the alignment jig through the workpiece positioning module; positioning the film on the alignment jig through the film positioning module; and placing the alignment jig on the lower template.

Embodiment 9: The overmold decoration method as described in Embodiment 8, further comprising: making the workpiece and the film pass through the workpiece positioning module and the film positioning modules included in the alignment jig to determine each other Relative position; providing the outer mold decoration machine, the outer mold decoration machine includes an upper template, the lower template, a mold frame, a second film, an air pressure control module, and a heating module; the second film is fixed to the mold frame; The upper template and the lower template clamp the second film, and a first airtight cavity is formed between the lower template, the mold frame and the second film, and the upper template, the mold frame and the A second airtight cavity is formed between the second films, and the alignment fixture is contained in the first airtight In the cavity; the air pressure control module applies negative pressure to the first airtight cavity and the second airtight cavity, and at the same time uses the heating module to the first airtight cavity, the second airtight cavity, and The included workpiece, the film, and the second film are heated; the vacuum state of the second airtight cavity is broken, and a positive pressure is applied to the second airtight cavity immediately to make the film and the second film Covering most of the surface of the workpiece; and cooling and breaking the vacuum state of the first airtight cavity.

Embodiment 10: The method for over-mold decoration as described in Example 8, wherein the over-mold decoration machine is an out-of-mold decoration device, an out-of-mold forming device, an out-of-film release device, a 3D imprinting device, a 3D transfer device, 3D vacuum forming machine, 3D surface decoration machine, vacuum film transfer machine, high pressure forming machine, high pressure transfer machine, pressure forming machine, pressure transfer machine, or vacuum high pressure heat transfer machine.

The embodiments of the present invention can be combined or replaced with each other in any way, so as to derive more implementation forms, but all do not deviate from the scope of the invention to be protected. The record shall prevail.

100‧‧‧positioning fixture

130‧‧‧Film positioning pins

210‧‧‧ First film

220‧‧‧Second film

300‧‧‧Workpiece

400‧‧‧Mold decoration machine

410‧‧‧ Lower template

420‧‧‧Mold frame

430‧‧‧Up template

A‧‧‧First chamber

B‧‧‧The second chamber

Claims (9)

A positioning jig, which is applied to a mold exterior decoration method, and includes: a first body; a second body, which includes a pair of positioning members, and the first body and the two bodies are determined by the pair of positioning members Relative positions of each other and combined with each other; a workpiece positioning module, which is arranged on the first body, and provides a workpiece to be positioned on the first body; and a film positioning module, which is arranged on the second body And provide a film to be positioned on the second body and align a decorative pattern on the film to a decorative position on the workpiece, where the workpiece and the film pass through the The workpiece positioning module and the film positioning module have predetermined and fixed relative positions with each other, and the decorative pattern has been pre-positioned to the decorative position. The alignment fixture according to claim 1, wherein the first body further includes one of the following: a raised portion whose height is higher than the height of the workpiece positioning module, and provides the workpiece positioning module setting; And a plurality of air holes, which penetrate the body and allow gas to flow therein. The alignment jig according to claim 1, wherein the workpiece positioning module is a workpiece carrier, and its outline conforms to the outer shape of the workpiece to provide positioning of the workpiece on the body, and the film positioning module A plurality of film positioning pins are included to provide positioning of the film on the body. The alignment jig as described in claim 1, wherein the method of exterior decoration is based on an exterior decoration technique Technology, one-mold external decoration technology, one-film external release technology, one-film external molding technology, one-film external 3D imprinting technology, one-film external 3D transfer technology, one-film external 3D vacuum forming technology, one-film external 3D surface Decoration technology, one film external vacuum envelope transfer technology, one film external high pressure molding technology, one film external high pressure transfer technology, one film external pressure forming technology, one film external pressure transfer technology, one film external vacuum high pressure One of thermal transfer technology and its combination. The alignment jig according to claim 1, wherein the decorative pattern to be presented by the workpiece is pre-formed on the film, and the decorative pattern is selected from a line, a text, a symbol, a gradient color, and a pattern , A color, a color block, a pattern, a pattern, a decorative pattern, a logo pattern, a trademark pattern, a three-dimensional decorative layer, a texture layer, a tactile layer, a functional layer, a functional layer, and its Combine one of them. The alignment fixture according to claim 1, wherein: the pair of positioning members further includes a first positioning member and a second positioning member, wherein the first positioning member is disposed on the first body, the second The positioning member is disposed on the second body, and the first positioning member and the second positioning member can maintain a relative position of each other in a determined state; and the first body further includes a recessed portion, wherein the height of the recessed portion Is lower than the height of the workpiece positioning module, so that when the first body and the second body are combined, they are located at the junction of the first body and the second body, and the first body and the second body are common One of the first surfaces formed and provided for carrying the thin film can be kept substantially flat. An outer mold decoration method includes: providing an outer mold decoration machine, the outer mold decoration machine includes the following template; providing a pair of positioning jigs, the positioning jig includes a workpiece positioning module separated from each other, and A film positioning module, the workpiece positioning module, and the film positioning module determine the relative positions of each other through a pair of positioning members and combine each other; positioning a workpiece on the positioning jig through the workpiece positioning module; Positioning a film on the alignment jig through the film positioning module, and aligning a decorative pattern on the film to a decorative position on the workpiece; and placing the alignment jig on the lower template , Where the work and the film have been previously determined and fixed relative to each other on the positioning jig through the work positioning module and the film positioning module through the work positioning module and the film positioning module, and the decorative pattern Has been pre-positioned to the decorative position. The extra-mold decoration method according to claim 7, further comprising: causing the workpiece and the film to determine the relative position between each other through the workpiece positioning module and the film positioning module included in the alignment jig; providing the An extra-mold decoration machine, which includes an upper template, the lower template, a mold frame, a second film, an air pressure control module, and a heating module; the second film is fixed to the mold frame; The upper template and the lower template clamp the second film, and a first airtight cavity is formed between the lower template, the mold frame and the second film, and the upper template, the mold frame and A second airtight cavity is formed between the second films, the alignment fixture is included in the first airtight cavity; the first airtight cavity and the second airtight cavity are controlled by the air pressure control module Apply negative pressure and simultaneously heat the first airtight cavity, the second airtight cavity, and the included workpiece, the film, and the second film with the heating module; break the second airtight The vacuum state of the cavity, and immediately apply positive pressure to the second airtight cavity, so that the film and the second film cover most of the surface of the workpiece; and Lower the temperature and break the vacuum state of the first airtight cavity. The extra-mold decoration method according to claim 7, wherein the extra-mold decoration machine is a film external decoration device, a film external molding device, a film external release device, a 3D imprinting device, and a 3D transfer device , A 3D vacuum forming machine, a 3D surface decoration machine, a vacuum envelope transfer machine, a high pressure forming machine, a high pressure transfer machine, a pressure forming machine, a pressure transfer machine, or a vacuum high pressure heat Transfer machine.

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