CN108869485B

CN108869485B - Device for screen assembly

Info

Publication number: CN108869485B
Application number: CN201810720722.2A
Authority: CN
Inventors: 王水琴; 张敏; 丁井杯
Original assignee: Huaqin Telecom Technology Co Ltd
Current assignee: Huaqin Technology Co Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2020-08-18
Anticipated expiration: 2038-06-29
Also published as: CN108869485A

Abstract

The invention discloses a device for assembling a screen, which is used for pasting the screen on a shell, and comprises: the fixture comprises an adsorption unit, an upper fixture die and a lower fixture die; the lower jig die is used for fixing the shell; the upper jig mould is arranged above the lower jig mould and used for fixing the screen; the upper jig mould comprises a plurality of supporting pieces, the supporting pieces can be far away from each other and approach to each other to form a placing space, the shape of the placing space is matched with the peripheral shape of the screen, and one side of each supporting piece facing the placing space is provided with a protruding part used for supporting the screen; the adsorption unit is arranged above the lower jig die and can move in the up-down direction, and the adsorption unit is used for adsorbing the screen. The device can prepositioned the screen, paste the screen in the casing perpendicularly to excessive gluey and the clearance inequality when preventing screen and casing laminating.

Description

Device for screen assembly

Technical Field

The invention relates to the field of electronic terminals, in particular to a device for assembling a screen.

Background

The assembly of screens such as touch screens and the like in the mobile phone industry is always a technical difficulty, the overall screen is a development trend at present, the narrow sides of the corresponding shell A (shell) glue are increasingly limited, the gap standard is correspondingly improved, the reference is made to the minimum side of 0.60mm at present, and the gap between the periphery of the touch screen and the shell A is 0.05 mm; the laminating technology of the touch screen is greatly challenged, and the problems of glue overflow and uneven gaps can be caused by the conventional assembly method; the touch screen is attached to the shell A and the risks of glue overflow and uneven gaps can be avoided only by means of vertical attachment; the following two methods are currently used for assembly;

1. the assembly touch screen adopts CCD automatic assembly jig: because the touch screen has FPC (flexible circuit board) and needs to pass through the A shell wire passing hole, the CCD automation needs slow operation, several times of pause are needed to ensure whether the FPC is installed, about 60 seconds are needed for assembling a finished product, the cost of the CCD automation is high, and the whole set of equipment is hundreds of thousands;

2. the touch screen is assembled by pure hands: after the adhesive surface of the touch screen of the shell A is glued, the touch screen cannot be assembled in a vertical mode because the FPC needs to penetrate through the shell A, the glue can be shoveled out of the shell in an inclined installation mode, the utilization rate of the glue is high, meanwhile, the glue overflow rate is as high as 30-40%, gaps are difficult to guarantee, the assembling of the touch screen is abnormal and poor and is high (the wall is climbed (the touch screen is pressed to the appearance surface of the shell), the gaps (the gaps of the touch screen) are uneven by 3%), and the time is 28-35 seconds.

Disclosure of Invention

The invention aims to overcome the defects of slow assembly, high possibility of glue overflow and uneven gaps of the touch screen in the prior art, and provides a device for assembling a screen.

The invention solves the technical problems through the following technical scheme:

a device for screen assembly for affixing a screen to a housing, the device comprising: the fixture comprises an adsorption unit, an upper fixture die and a lower fixture die;

the lower jig die is used for fixing the shell;

the upper jig mould is arranged above the lower jig mould and used for fixing the screen;

the upper jig mould comprises a plurality of supporting pieces, the supporting pieces can be far away from each other and approach to each other to form a placing space, the shape of the placing space is matched with the peripheral shape of the screen, and one side of each supporting piece facing the placing space is provided with a protruding part used for supporting the screen;

the adsorption unit is arranged above the lower jig die and can move in the up-down direction, and the adsorption unit is used for adsorbing the screen.

Optionally, each of the holders provides an abutting surface facing the placing space, the abutting surface is used for abutting against a side surface of the screen, and an upper surface of the protruding portion is a supporting surface used for supporting the screen from below.

Optionally, four of the plurality of supporting members are respectively a first supporting member, a second supporting member, a third supporting member and a fourth supporting member, the first supporting member, the second supporting member, the third supporting member and the fourth supporting member respectively provide a first abutting surface, a second abutting surface, a third abutting surface and a fourth abutting surface facing the placing space, the first abutting surface is opposite to the second abutting surface, and the third abutting surface is opposite to the fourth abutting surface.

Optionally, the first and second trays are movable in a first direction, the third and fourth trays are movable in a second direction, and the first direction is perpendicular to the second direction.

Optionally, a notch is formed in the fourth supporting piece at a position facing the third supporting piece, and the notch allows the shell to be placed into the lower jig die.

Optionally, the fourth supporting member is a surrounding member, and the fourth supporting member surrounds the first supporting member, the second supporting member and the third supporting member in the fourth supporting member.

Optionally, the fourth abutting surface is a surface of two ends of the fourth supporting piece close to the notch, which faces the placing space.

Optionally, the device further includes a limiting member, where the limiting member corresponds to the supporting member one to one, and is configured to limit a moving distance of the supporting member.

Optionally, the adsorption unit includes a suction plate and a driving member for driving the suction plate to move up and down.

Optionally, the adsorption unit further comprises an air pump, a plurality of air ports are formed in the lower surface of the air suction plate, and the air pump is communicated with the air ports and used for supplying air to and sucking air from the air ports.

The positive progress effects of the invention are as follows: the device can preposition screen through the place space that mould formed on the tool, and the screen is being positioned in the accurate position of casing top after, pastes screen perpendicular in casing through adsorbing the unit to excessive gluey and the clearance inequality when preventing screen and casing laminating.

Drawings

Fig. 1 is a schematic perspective view of an apparatus according to a preferred embodiment of the present invention.

Fig. 2 is a schematic view of the structure of a suction plate of the apparatus according to the preferred embodiment of the present invention.

Fig. 3 is a partial structural schematic diagram of the device according to the preferred embodiment of the invention, wherein the upper jig mold is exposed and the screen is placed in the placing space.

Fig. 4 is a schematic top view of an upper mold of a jig according to a preferred embodiment of the present invention, wherein each of the holders is located at a first position.

Fig. 5 is a schematic top view of an upper mold of a jig according to a preferred embodiment of the present invention, wherein each of the holders is located at a second position.

Fig. 6 is a schematic structural view of a second tray according to a preferred embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of the second tray of fig. 6.

Fig. 8 is a schematic perspective view of a lower mold of a jig according to a preferred embodiment of the present invention.

Description of reference numerals:

device 100

Rack 101

Support plate 102

Adsorption unit 110

Air suction plate 111

First plate 112

Second plate 113

Drive member 114

Jig upper die 120

First supporting member 121

Second holder 122

Third tray 123

Fourth tray 124

First contact surface 131

Second abutting surface 132

Third contact surface 133

Fourth abutting surface 134

Stopper 141

Projection 142

Support surface 143

Gap 144

Guide member 145

Placing space 146

Jig lower die 150

Screen 200

First direction X

Second direction Y

Detailed Description

The present invention is further illustrated by way of example and not by way of limitation in the scope of the following examples in connection with the accompanying drawings.

As shown in fig. 1, the device 100 is used to attach a screen 200 to a housing.

The apparatus 100 may be suitable for mounting terminal devices including mobile phones, tablet computers, PDAs (Personal digital assistants), POS (Point of Sales), in-vehicle computers, and the like. In this embodiment, a mobile phone screen is taken as an example.

The screen 200 may be a capacitive screen, a resistive screen, or the like, and may be in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. The shell is the shell of the terminal equipment.

The apparatus 100 comprises: the jig comprises a frame 101, an adsorption unit 110, an upper jig mold 120 and a lower jig mold 150 which are sequentially installed on the frame 101 from top to bottom.

The adsorption unit 110 is disposed above the jig lower mold 150 and is movable in an up-down direction, and the adsorption unit 110 is used for adsorbing the screen 200.

The adsorption unit 110 includes a suction plate 111 and a driving member 114, and the driving member 114 is fixed to the frame 101 and drives the suction plate 111 to move up and down. In the present embodiment, the driving member 114 is a cylinder. Alternatively, the driving member 114 may be a linear motor or the like.

The adsorption unit 110 further includes an air pump (not shown). The lower surface of the air suction plate 111 is provided with a plurality of air ports, and the air pump is communicated with the air ports and used for supplying air to the air ports and sucking air.

As shown in fig. 2, the suction plate 111 includes a first plate 112 and a second plate 113, the second plate 113 is embedded in the first plate 112 and positioned below the first plate 112, and the first plate 112 is provided with through holes larger than those provided in the second plate 113. The lower surface of the air suction plate 111, that is, the lower surface of the second plate 113, is a plane, which facilitates the attachment of the screen 200.

As shown in fig. 3, the upper jig mold 120 includes 4 holders, the 4 holders can be far away from each other and approach each other to form a placing space 146, the placing space 146 is adapted to the peripheral shape of the screen 200, a protruding portion 142 is disposed on one side of each holder facing the placing space 146, and the protruding portion 142 is used for holding the screen 200. In fig. 3, the screen 200 is placed in the placing space 146 and held by the holder.

In the present embodiment, only 4 receiving members are provided, but the present invention is not limited thereto, and those skilled in the art can set the number of receiving members as needed as long as they can enclose the desired placing space 146.

Each of the holders provides an abutment surface facing the placing space 146, the abutment surface being for abutting a side surface of the screen 200, an upper surface of the projection 142 being a support surface 143, the support surface 143 being for supporting the screen 200 from below.

Four of the plurality of holders are respectively a first holder 121, a second holder 122, a third holder 123 and a fourth holder 124, the first holder 121, the second holder 122, the third holder 123 and the fourth holder 124 respectively provide a first abutting surface 131, a second abutting surface 132, a third abutting surface 133 and a fourth abutting surface 134 facing the placing space 146, the first abutting surface 131 and the second abutting surface 132 are oppositely arranged, and the third abutting surface 133 and the fourth abutting surface 134 are oppositely arranged.

The first and

second trays

121 and 122 are movable in a first direction X, and the third and

fourth trays

123 and 124 are movable in a second direction Y, the first direction X being perpendicular to the second direction Y. Each tray is provided with a guide member 145, and the guide member 145 is a matching structure of a slider and a slide rail. The guide member 145 is installed between each tray and a support plate 102 above each tray, and the support plate 102 is fixedly installed to the frame 101 to support each tray. Each tray is driven to move by a driving unit. The driving unit may be a rotary motor, a linear motor, a cylinder, etc. The first and

second trays

121 and 122 are moved in a manner of approaching or separating from each other in the first direction X, and the third and

fourth trays

123 and 124 are moved in a manner of approaching or separating from each other in the second direction Y.

The device 100 further includes limiting members 141, and the limiting members 141 are in one-to-one correspondence with the holders and used for limiting the moving distance of the holders. In the embodiment, the limiting member 141 is a cylinder disposed in the long hole of the holder, and the movable distance of the holder is equal to the length of the long hole. However, the present invention is not limited thereto, and the stopper 141 may be a stopper or the like provided at one end or both ends of the holder.

Fig. 4 illustrates a state in which each tray is located at the first position. In the first position, the 4 supporting members are close to each other and enclose the placing space 146, at this time, the screen 200 cannot enter the lower jig mold 150 below the upper jig mold 120, and the housing cannot be placed in the lower jig mold 150.

Fig. 5 illustrates a state in which each tray is located at the second position. In the second position, 4 holding pieces are far away from each other, and at this moment, the jig lower die 150 is exposed, so that the shell is conveniently placed.

The fourth supporting member 124 has a notch 144 at a position facing the third supporting member 123, and the notch 144 allows the housing to be placed into the lower jig mold 150. Because the air suction plate 111 is arranged above the jig, the air suction plate 111 is close to the jig, and therefore, the shell cannot be directly placed from the upper side of the jig, but is obliquely placed into the lower jig mold 150 from the notch 144.

The fourth tray 124 is a surrounding member, and the fourth tray 124 surrounds the first tray 121, the second tray 122 and the third tray 123 inside the fourth tray 124. Providing the fourth tray 124 as a surround ensures that the fourth tray 124 is a unitary member in the presence of the gap 144, reducing the overall part count of the device 100. And the fourth abutment surface 134 is easy to synchronize.

The fourth abutting surface 134 is a surface of the fourth tray 124 facing the placing space 146 at both ends near the notch 144. Both surfaces simultaneously abut the sides of the screen 200 when the screen 200 is inserted.

Since the mobile phone screen has a long side and a short side, for the purpose of more stable placement of the screen 200, the abutting surfaces abutting the long sides are both two surfaces spaced from each other. As shown in fig. 3, the third tray 123 has a "U" shape, the third abutting surface 133 is two surfaces spaced from each other, and the fourth abutting surface 134 of the fourth tray 124 is opposite to the third abutting surface 133.

The first and

second holders

121 and 122 are of an "L" shaped structure, and the first and second abutting

surfaces

131 and 132 are both continuous single surfaces.

Alternatively, the first and second abutment surfaces 131, 132 may be spaced surfaces, while the third and fourth abutment surfaces 133, 134 are connected single surfaces. The number of surface configurations of the abutment surfaces is not limited as long as the abutment surfaces are on the same plane.

Fig. 6 and 7 illustrate the second tray 122. Here, the protruding portions 142 of the respective trays facing the placing space 146 are described by taking the second tray 122 as an example.

The width of the supporting surface 143 of the protrusion 142 (i.e., the protruding length of the protrusion 142) was 0.5 mm. The protruding length of the protruding portion 142 should not be too long so as to prevent the housing from being placed into the lower mold 150.

Fig. 8 illustrates a structure of a lower jig mold 150, and the lower jig mold 150 is a conventional mold for fixing a housing and is not described in detail herein.

The method of use of the apparatus 100 is briefly described below.

Firstly, the housing is dispensed and then placed into the lower jig mold 150 for fixation, and at this time, each support member is located at the second position. Then, the movement of each tray is controlled so that each tray is located at the first position, and is placed in the screen 200. When the screen 200 is placed, firstly, a Flexible Printed Circuit (FPC) of the screen 200 is passed through a wire passing hole of the housing, then one edge of the screen 200 is abutted against an abutting surface and a supporting surface 143 of one of the holders, preferably one short edge of the screen 200 is abutted against the first holder 121 or the second holder 122, and then the whole screen 200 is placed in the placing space 146 enclosed by the holders. After the screen 200 is placed stably, the adsorption unit 110 is started, the air suction plate 111 moves downwards to press against the plane and vacuum adsorption is started, then the support pieces are pushed back to the second position, the air suction plate 111 continues to move downwards, and the screen 200 is pressed into the screen 200 installation frame of the shell. Then the air suction plate 111 moves upwards, and the air pump is started to supply air while moving upwards, so that the screen 200 is prevented from being taken out of the shell by the air suction plate 111. The assembled housing assembly is taken out by the operator to enter the next process. The whole assembly process consumes about 30-35s according to statistics in actual operation, and the glue overflow proportion is reduced to be within a controllable range of 3%.

Although the term "abutment" is used in the description of the present invention, it does not mean very close frictional contact and clamping contact, but rather, a slight gap may exist between two surfaces abutting each other due to an operation error or a mounting error, and such a case is also included in the scope of "abutment" defined in the present application.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships that are based on the orientation or direction of the device 100 during normal use.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A device for screen assembly, the device for affixing a screen to a housing, the device comprising: the fixture comprises an adsorption unit, an upper fixture die and a lower fixture die;

the lower jig die is used for fixing the shell;

the adsorption unit is arranged above the lower die of the jig and can move in the vertical direction, the adsorption unit is used for adsorbing the screen, the adsorption unit comprises an air suction plate and a driving member, and the driving member is used for driving the air suction plate to move up and down;

wherein each of the trays is driven to move by a driving unit.

2. The device for screen assembly according to claim 1, wherein each of the holders provides an abutment surface facing the placing space, the abutment surface being for abutting against a side surface of the screen, an upper surface of the projection being a support surface for supporting the screen from below.

3. The device for screen assembly of claim 1, wherein four of the plurality of holders are a first holder, a second holder, a third holder, and a fourth holder, respectively, the first holder, the second holder, the third holder, and the fourth holder providing a first abutting surface, a second abutting surface, a third abutting surface, and a fourth abutting surface, respectively, facing the placing space, the first abutting surface being disposed opposite to the second abutting surface, the third abutting surface being disposed opposite to the fourth abutting surface.

4. The device for screen assembly of claim 3, wherein the first and second trays are movable in a first direction, the third and fourth trays are movable in a second direction, and the first direction is perpendicular to the second direction.

5. The device for screen assembly according to claim 3, wherein the fourth supporting member has a notch at a position facing the third supporting member, the notch allowing the housing to be placed into the lower jig mold.

6. The device for screen assembly of claim 5, wherein the fourth holder is a surround, the fourth holder surrounding the first, second, and third holders inside the fourth holder.

7. The device for screen assembly of claim 6, wherein the fourth abutment surface is a surface of both ends of the fourth tray near the notch facing the placement space.

8. The apparatus for screen assembly according to claim 1, further comprising a limiting member, wherein the limiting member corresponds to the tray one to one and limits a moving distance of the tray.

9. The apparatus for screen assembly of claim 1, wherein the adsorption unit further comprises an air pump, a plurality of air ports are formed on a lower surface of the air suction plate, and the air pump communicates with the air ports and serves to supply and suck air to and from the air ports.