TW201420300A - Adhesion jig and method of using the same - Google Patents

Abstract

An adhesion jig comprises a base having a central opening and a plurality of sidewalls surrounding said opening, an adhesion stage supported in said opening of the base for a first workpiece to be placed thereon. The peripheral of said first workpiece is designed to exceed the peripheral of said adhesion stage when it is placed on the stage, and at least one restricting portions formed on the base for confining the position of a second workpiece loaded from outside, so that the second workpiece may be precisely adhered with the first workpiece placed on the stage. A method of using said adhesion jig is also provided for preventing the contamination caused by the overflow of the adhesive.

Description

Fitting fixture and its use method

The present invention generally relates to a jig, and more particularly to a conforming jig and method of use thereof.

A jig is a tool used to assist in controlling the position of a workpiece or part or guiding its movement. By controlling the position or movement of a workpiece or part, the jig can be used to repeat the process accurately, safely and quickly. The efficacy of the manufacturing steps of a certain part is widely used in the processing industry or the assembly industry. The fixtures will be presented in a variety of styles depending on their application areas and customization requirements. All machining tools, stamping fixtures, heat treatment fixtures, welding fixtures, or assembly fixtures are the industry. Common types of fixtures. For some types, the fixture can also be considered a fixture, and there is no significant difference in functionality between the two.

The jig is also used in the assembly field of today's smart phones. In this application, the sensor glass is generally aligned and fitted with the outer protective glass. Then, the touch panel is assembled integrally with the inner liquid crystal panel, the circuit board, and the casing. For the bonding step of the touch substrate and the glass cover, the industry generally uses a special bonding fixture to accurately contact the touch substrate with the glass. The cover is fitted.

Details of the above bonding step will be described below through Figs. 1 and 2. First, Fig. 1 is a perspective view showing a conventional fitting jig in a general smart phone assembly. As shown in FIG. 1 , the conventional bonding fixture 100 used in the assembly of a smart phone has a block-shaped seat body shape, and has a bearing area 101 at the center for placing a touch substrate to be attached. A plurality of raised limiting portions 103 are formed around the platform of the carrying area 101, such as the corner portions shown in the figure, which can limit the position of the touch substrate placed on the carrying area 101. At the same time, a step portion 105 is formed at a portion outside the respective limiting portions 103 for restricting the position of the cover glass when it is close to the portion to be bonded to the touch substrate. Through the arrangement design of the limiting portion 103 and the step portion 105, the conventional bonding jig 100 allows the glass cover to be accurately attached to the touch substrate. However, although the conventional fitting jig 100 can achieve the effect of accurate fitting, the conventional fitting jig 100 in practice can cause a lot of process problems, and the problem will be explained later in FIG.

Referring now to FIG. 2, there is shown a cross-sectional view of the conventional bonding jig 100 during the actual bonding, which is made by taking the line A-A' in FIG. 1 as a cross line. The relative position and distance between the glass cover, the touch substrate, the limiting portion, and the step portion can be clearly indicated. As shown in FIG. 2, the glass cover 107 and the touch substrate 109 are adhered to each other by a bonding glue 111 (such as a water-repellent glue), and the adhesive 111 is applied to the bonding surface via a free overflow. Wetting and diffusion. In the prior art, since the touch substrate 109 is a fixed position by using the limiting portion 103 of the bonding jig, it can be seen from the figure. The peripheral edge 109a of the touch substrate 109 is very close to or even in contact with the limiting portion 103. On the other hand, the glass cover 107 is attached to the touch substrate 109 from above the bonding fixture 100. When approaching the touch substrate 109, the glass cover 107 passes through the outer wall of the step of the bonding fixture 100. 105a is used to limit its position so that the glass cover 107 can be accurately aligned with the underlying touch substrate 109 and uniformly adhered. Finally, the bonding surface of the glass cover 107 is located close to the height level of the stepped platform 105b, and there is a slight gap between the glass cover 107 and the touch substrate 109, so that the adhesive film 111 naturally overflows and wets and spreads through the capillary phenomenon.

It can be clearly seen from FIG. 2 that a part of the periphery of the touch substrate 109 and the glass cover 107 are attached due to the close-fitting design of the limiting portion 103 of the conventional fitting jig 100 and the step portion 105. The face will be very close to the corner portion 105c of the step portion 105, as shown by the area circled by the broken line, so that the glue 111 will be wetted and spread onto the bonding jig 100 due to the capillary phenomenon. This excessive gelation phenomenon will cause pollution to the fixture, and affect the subsequent cooperation of other touch substrates and glass cover sheets. Therefore, the industry still needs to improve the design of the fitting fixtures used in today's smart phone assembly, in order to solve the problems inherent in many of the above prior art.

In view of the above-mentioned prior art techniques, the problem of excessive overfilling is easily caused, and the present invention proposes a novel design of a fitting fixture, which discards the conventional technique in which two pieces of the fitting workpiece are supported by the limiting portion. Or limit feature to fix the position In the same way, a novel single-piece limit design is used for the fit. In this way, the bonding glue does not cause capillary phenomenon due to the workpiece being too close to the bonding fixture, which may cause problems such as excessive glue overflow.

According to one aspect of the invention, a fitting fixture includes a body having an opening in the center and a plurality of side walls surrounding the opening; a mounting platform suspended in the opening of the housing, the carrier For carrying a first workpiece, the circumference of the first workpiece may exceed the circumference of the loading platform and be spaced apart from the sidewall, and at least one limiting portion is disposed on the base for limiting an external The position of the second workpiece entering the opening is such that the second workpiece can be accurately engaged with the first workpiece carried on the stage.

According to another aspect of the present invention, a method of using a fitting jig is provided, the method comprising the steps of providing a fitting jig comprising a seat having a central opening, a suspension a central opening of the base and at least one limiting portion disposed on the base, wherein the limiting portion is configured to limit a position of the workpiece from the outside into the opening; and a first workpiece is disposed on the carrying platform So that the circumference of the first workpiece extends beyond the circumference of the loading platform and is spaced apart from the sidewall surrounding the opening; the second workpiece passes through the limit of the limiting portion, so that the second workpiece can be accurately carried The first workpiece on the stage is attached.

The objectives and other objects of the present invention will become more apparent from the written description of the appended claims.

In the detailed description that follows, the component symbols are marked as part of the accompanying drawings and are described in the manner in which the particular embodiments of the embodiments can be practiced. Such embodiments will be described in sufficient detail to enable those of ordinary skill in the art to practice. The reader is aware that other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the embodiments. Therefore, the following detailed description is not to be considered as a limitation, and the embodiments included herein are defined by the scope of the accompanying claims.

Referring first to Figure 3, a perspective view of a fitting jig 200 in accordance with a preferred embodiment of the present invention is illustrated. As shown in Fig. 3, the main body of the fitting jig 200 is a body 201 which is in the form of a frame. The base 201 has an opening 203 in the middle thereof and a plurality of side walls 204 surrounding the opening. A loading platform 205 is suspended in the opening 203 of the base 201. The base 201 further includes a support member that connects the carrier 205. The carrier 205 can be suspended in the opening 203 by the support member 207 and can be spaced apart from the sidewall 204 of the surrounding opening 203. The number, location and shape of the side walls 204 can be adjusted depending on the workpiece being attached. The carrier 205 is configured to carry a first workpiece, such as a sensor glass component in a smart phone. In this embodiment, the height of the bearing surface of the carrying platform 205 is higher than the height of the supporting member 207, so as to prevent the adhesive glue from sticking to the supporting member 207 when the bonding is performed.

A plurality of limiting portions 209 are formed on the base 201 surrounding the carrying platform 205, and are disposed at four corners outside the carrying platform 205 or are respectively arranged in the seat as shown in the figure. At the four corners of the body 201, the height of the body 201 is higher than that of the loading platform 205, so that a second workpiece is firstly restrained by the limiting portions 209 when approaching the loading platform 205 to be positioned at a predetermined bonding position. . The fitting jig 200 can also be formed with a groove 210 for facilitating the clamping of the attached workpiece by the clamp.

Referring now to FIG. 4, a top view of a first workpiece 211 carried on a carrier 205 of the bonding fixture 200 in FIG. 3 is illustrated in accordance with a preferred embodiment of the present invention. As shown in FIG. 4, a first workpiece 211 is placed on the carrier 205. In a preferred case, the circumference of the first workpiece 211 carried by the carrier 205 may exceed the circumference of the carrier 205, thus ensuring that even if the adhesive applied to the first workpiece 211 during the bonding process overflows, The carrier 205 under the first workpiece 211 is contaminated. In the embodiment of the present invention, the first workpiece 211 and the carrying platform 205 are both in a rectangular shape. In other embodiments, the first workpiece 211 and the carrier 205 may have other shapes, such as a circular shape or even an irregular shape, depending on the design of the workpiece to be attached. Moreover, in the embodiment of the present invention, the opening 203 of the bonding fixture 200 is sized such that when the first workpiece 211 is placed on the carrier 205, the circumference of the first workpiece 211 is spaced from the sidewall 204 of the surrounding opening 203. A certain distance, this will ensure that the first workpiece 211 will not be too close to the side wall 204 of the seat 201 during the bonding process, causing the adhesive glue to wet and contaminate the body 201. Similarly, in order to prevent the adhesive glue from being wetted and contaminated to the limiting portion 209, the first workpiece 211 is spaced apart from the limiting portion 209 by a certain distance.

Referring to FIG. 4, in the preferred embodiment of the present invention, the bonding fixture 200 may further include a plurality of movable positioning members (or positioning claws) 213 disposed around the carrying platform 205. To locate the first workpiece to be carried The position of 211 on the carrier 205. For example, the positioning member 213 can move in the X direction and the Y direction to push the first workpiece 211 placed on the stage 205 to move the first workpiece 211 to a predetermined bonding position. In another embodiment, the positioning member 213 can move the first workpiece 211 by suction, thereby achieving the purpose of positioning the first workpiece 211. In addition, the movable positioning member (or positioning claw) 213 may also be disposed away from the limiting portion 209 to prevent the overflow portion from being contaminated to the positioning member or the limiting portion as is conventionally known.

Furthermore, the bearing surface of the loading platform 205 can be provided with a plurality of air holes 214. After the first workpiece 211 is positioned by the positioning member 213, the first workpiece 211 can be fixed on the loading platform 205 via the air hole 214 by vacuum adsorption. The bonding is incorrect due to the movement of the first workpiece 211 during the bonding. In another embodiment, the carrier 205 can have a certain adhesiveness, and the first workpiece 211 can be fixed in an adhesive manner. In another embodiment, when the first workpiece 211 is a substance having magnetic properties, a magnetic attraction device may be added under the loading platform 205 to fix the first workpiece 211 to the carrier 205 by magnetic attraction.

Next, please refer to FIG. 5, which illustrates a top view of a second workpiece 215 being restrained by the conforming jig 200 during the bonding process in the preferred embodiment of the present invention. In the embodiment of the present invention, the second workpiece 215, which is intended to be attached to the first workpiece 211 on the carrying platform 205, such as a cover glass in a smart phone, is first placed on the press machine. The dispensing step is carried out (not shown), and the bonding glue is uniformly wetted and spread on the bonding surface of the second workpiece 215. During the fitting, the press machine will take the second workpiece 215 from the fitting jig 200 The upper portion is fed into the opening 203 of the fitting jig 200. In this step, the second workpiece 215 passes through a plurality of limiting portions 209 provided on the base 201 around the opening 203 above the carrying platform 205. In the embodiment of the present invention, the area of the second workpiece 215 is larger than the area 211 of the first workpiece. For example, the area of the touch substrate in the smart phone is smaller than the protective glass cover of the outer layer, which occupies only the glass. The screen display area of the cover layer is not formed on the cover. As shown in FIGS. 3 and 5, each of the limiting portions 209 of the fitting jig 200 may be a recess having a specific contour shape, the shape of which will correspond to the contour of the second workpiece 215 of the desired limit. . Thus, under the joint action of the plurality of limiting portions 209, the second workpiece 215 passing through the opening 203 can be accurately restricted to a predetermined bonding position, and the position is not aligned with the first workpiece 211. Offset due to uneven force.

Referring now to Figure 6, there is shown a cross-sectional view of the bonding jig 200 during actual bonding in accordance with a preferred embodiment of the present invention. The cross-sectional view is taken as line B-B' in Figure 5 The line is made to clearly show the relative position and distance between the first workpiece 211, the second workpiece 215, the carrier 205, and the limiting portion 209. As shown in Fig. 6, the first workpiece 211 is fixed to the carrier 205 with its periphery exceeding the circumference of the carrier 205. The specific surface of the bonding surface of the second workpiece 215 is covered with a bonding glue 217. During the bonding, the second workpiece 215 enters the opening 203 from above the bonding fixture 200 and is limited by the limiting portion 209. The conforming area of the second workpiece 215 can be accurately aligned and conformed to the first workpiece 211. It can be clearly seen from Fig. 6 that among the two workpieces of the first workpiece 211 and the second workpiece 215, only the second workpiece having a larger area is present. The 215 is subjected to the restriction of the stopper portion 209 to approach or contact the bonding fixture 200. Since the first workpiece 211 having a small area is not limited by the stopper portion 209 of the bonding jig 200, the periphery thereof does not come close to or contact with the bonding jig 200 (except for the carrying table 205).

According to the bonding fixture 200 proposed by the embodiment of the present invention, the present invention also provides a method for using the bonding fixture, the method comprising the steps of providing a bonding fixture as shown in FIG. 3, the bonding fixture The base 201 includes a central opening 203, a mounting base 205 suspended from the central opening 203 of the base 201, and at least one limiting portion 209 disposed on the base 201. The limiting portion 209 is used for the limiting portion 209. Limiting the position of the workpiece from the outside into the opening 203 (other components of the fitting jig and corresponding descriptions have been disclosed in the above embodiments, and will not be described herein again), and a first workpiece 211 is placed on the sticker. The carrier 205 of the fixture (as shown in FIG. 4) is such that the circumference of the first workpiece 211 extends beyond the circumference of the carrier 205 and is spaced apart from the sidewall surrounding the opening 203 of the stage, and finally makes a The two workpieces 215 are constrained by the limiting portions (as shown in FIGS. 5 and 6), thereby enabling the second workpiece 215 to be accurately attached to the first workpiece 211 carried on the loading platform. Hehe. In the bonding process, the bonding glue may be formed on the first workpiece 211 in advance or formed on the second workpiece 215 in advance.

The method of using the fitting jig of the present invention further comprises using a movable positioning member to position the first workpiece on the stage. The method for using the bonding fixture provided by the invention further comprises fixing the first workpiece to the loading platform by vacuum adsorption or adhesion, or using a magnetic force The first workpiece is fixed to the stage by an adsorption method.

Through the design of the invention, the bonding glue between the first workpiece and the second workpiece does not contact the bonding fixture even if the glue is overflowed, so that the contamination caused by excessive overflow can be prevented, and the water glue can be avoided. Waste, or problems such as the amount of glue dispensed and the thickness of the fit.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100‧‧‧Fitting fixture

101‧‧‧bearing area

103‧‧‧Limited

105‧‧‧Steps

105a‧‧‧The outer wall of the limit

105b‧‧‧Limited Platform

105c‧‧‧ corner parts

107‧‧‧glass cover

109‧‧‧Touch substrate

109a‧‧‧ Periphery

111‧‧‧Finishing glue

200‧‧‧Fit fixture

201‧‧‧ body

203‧‧‧ openings

205‧‧‧bearing station

207‧‧‧Support

209‧‧‧Limited

210‧‧‧ Groove

211‧‧‧First workpiece

213‧‧‧ Positioning parts

214‧‧‧ stomata

215‧‧‧second workpiece

217‧‧‧Finishing glue

The present specification contains the drawings and constitutes a part of the specification in the specification, and the reader will further understand the embodiments of the invention. The drawings depict some embodiments of the invention and, together with the description herein. In the drawings, FIG. 1 is a perspective view showing a conventional jig for fitting in a general smart phone assembly, and FIG. 2 is a view showing a conventional jig in the first drawing during the actual fitting. 3 is a perspective view of a fitting jig in accordance with a preferred embodiment of the present invention; and FIG. 4 is a view showing a first workpiece carried in FIG. 3 in accordance with a preferred embodiment of the present invention. a top view on the carrier of the fixture; Figure 5 illustrates a second workpiece in the preferred embodiment of the invention during the bonding period A top view of the conformal fixture limit; and a cross-sectional view of the fit fixture during the actual fit in FIG.

It should be noted that all the illustrations in this specification are of the nature of the legend. For the sake of clarity and convenience of illustration, the various components in the drawings may be exaggerated or reduced in size and proportion. The same reference numbers are used in the drawings to refer to the corresponding or similar features in the modified or different embodiments.

200‧‧‧Fit fixture

203‧‧‧ openings

205‧‧‧bearing station

209‧‧‧Limited

211‧‧‧First workpiece

215‧‧‧second workpiece

217‧‧‧Finishing glue

Claims (16)

A fitting fixture comprising: a body having an opening in the center and a plurality of side walls surrounding the opening; a carrying platform suspended in the opening of the seat, the carrying platform for carrying a first a workpiece, the peripheral edge of the first workpiece may exceed a circumference of the carrier and be spaced apart from a sidewall surrounding the opening; and at least one limiting portion is disposed on the base for restricting an external access to the opening The position of the second workpiece is such that the second workpiece can be accurately engaged with the first workpiece carried on the stage. The affixing jig of claim 1, wherein the affixing fixture further comprises a movable positioning member, and the positioning member is disposed around the loading platform and/or away from the at least one limiting portion. And for positioning the position of the first workpiece to be carried on the loading platform. The fitting jig according to claim 1, wherein the base further comprises a support member connected to the loading platform, the support platform being suspended in the opening of the base body by the support member. The bonding fixture of claim 1, wherein the loading platform fixes the first workpiece by vacuum adsorption or adhesion. The bonding jig of claim 1, wherein the first workpiece has magnetic properties, and the first workpiece is fixed to the loading platform by magnetic attraction. The fitting jig according to claim 1, wherein the carrying surface of the carrying platform has a height higher than a height of the supporting member. The bonding jig of claim 1, wherein the height of the limiting portion is higher than the carrying platform. The bonding fixture of claim 1, wherein the limiting portions are disposed at four corners of the housing and spaced apart from the first workpiece by a distance. The fitting jig according to claim 1, wherein the limiting portion is a concave portion having a specific contour shape, and the shape corresponds to a peripheral contour of the second workpiece to be constrained. The bonding fixture of claim 1, wherein the second workpiece has an area larger than an area of the first workpiece. The bonding fixture of claim 1, wherein the first workpiece is a touch panel. The bonding fixture of claim 1, wherein the second workpiece is a glass cover. A method for using a fitting fixture, the method comprising: providing a fitting fixture, the fitting fixture comprising a seat body having a central opening, a carrying platform suspended from a central opening of the seat body, and at least one a limiting portion on the seat body, wherein the limiting portion is configured to limit a position at which the workpiece enters the opening from the outside; and a first workpiece is disposed on the loading platform such that a circumference of the first workpiece exceeds the loading platform a peripheral edge and spaced apart from a side wall surrounding the opening; and a second workpiece passing the limit of the limiting portion, so that the second workpiece can be accurately fitted to the first workpiece carried on the carrying platform . The method of using the fitting jig according to claim 13 further includes using a movable positioning member to position the first workpiece on the stage. The method for using the bonding fixture according to claim 14, further comprising fixing the first workpiece to the loading platform by vacuum adsorption or adhesion. For example, the method of using the bonding fixture described in claim 14 of the patent application is further The method includes magnetically adsorbing the first workpiece on the platform.