CN213276190U - ACF adhesion device - Google Patents

Abstract

The utility model relates to a liquid crystal display technology field discloses an ACF adhesion device. The ACF adhesion device comprises a bearing plate, a pressing plate, two cutters and a heating plate, wherein the bearing plate can support a workpiece, an ACF extending along the Y direction is arranged on the upper surface of the workpiece, the pressing plate is located on the bearing plate and can move relative to the bearing plate along the Z direction, accommodating holes are formed in the pressing plate, the two cutters are arranged in the accommodating holes at intervals along the Y direction, the distance between the two cutters is adjustable, the cutting edge of each cutter is flush with the lower surface of the pressing plate, when the pressing plate moves to be pressed on the workpiece, the ACF can be cut by the cutters, the heating plate is movably connected to one side, facing the bearing plate, of the pressing plate, and the heating plate can. The utility model discloses an ACF adhesion device can cut ACF to appropriate size according to the work piece demand, and the commonality is good, repeatability is good, and the hot plate does not contact with the work piece when heating ACF, avoids damaging the work piece.

Description

ACF adhesion device

Technical Field

The utility model relates to a liquid crystal display technology field especially relates to an ACF adhesion device.

Background

The liquid crystal display has the advantages of low operating voltage, no radiation, light weight, small volume and the like, and becomes a mainstream product in the display field in the market. The liquid crystal display comprises a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel is formed by sealing liquid crystal between an upper transparent substrate and a lower transparent substrate. The liquid crystal display panel is connected to the printed circuit board through the driving circuit, and particularly, ACFs (Anisotropic Conductive films) are disposed between the driving circuit board and the liquid crystal display panel and between the driving circuit board and the printed circuit board, and the ACFs are formed by uniformly dispersing minute Conductive ions in adhesive resin having adhesion, so that the driving circuit board and the liquid crystal display panel and the driving circuit board and the printed circuit board can be fixed and electrically connected.

Typically, the ACF is in a strip structure and is disposed in a roll, and includes an adhesive layer and a release paper attached to the adhesive layer. The adhesive layer of the ACF has weak adhesiveness at normal temperature, and can achieve firm adhesion upon heating. When the ACF is adhered to a workpiece (such as a liquid crystal display panel, a driving circuit board, or a printed circuit board), the ACF needs to be cut first to make the length of the ACF consistent with the length of the area to be adhered to the workpiece, then the cut ACF is positioned on the workpiece, and finally the ACF is heated and pressed to adhere to the workpiece. For some reworked workpieces, because the number is small and the types are many, the ACF is usually pasted under the line, and in the prior art, the off-line ACF pasting device cannot flexibly cut the size of the ACF according to the type of the workpiece, so that the ACF is low in pasting efficiency and poor in precision, and the workpiece is easily damaged when being pressed.

Therefore, an ACF attachment device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ACF adhesion device, the commonality is good, the precision is high and avoid damaging the work piece.

To achieve the purpose, the utility model adopts the following technical proposal:

an ACF bonding apparatus comprising:

the loading plate can support a workpiece, and the upper surface of the workpiece is provided with an ACF extending along the Y direction;

the ACF cutting device comprises a bearing plate, a pressing plate and two cutters, wherein the pressing plate is positioned on the bearing plate and can move relative to the bearing plate along the Z direction, the bottom of the pressing plate is provided with an accommodating hole, the two cutters are arranged in the accommodating hole at intervals along the Y direction, the distance between the two cutters is adjustable, the cutting edge of each cutter is flush with the lower surface of the pressing plate, and the cutters can cut the ACF when the pressing plate moves to be pressed on a workpiece; and

the heating plate is movably connected to one side, facing the bearing plate, of the pressing plate and can selectively move to the position below the cutter so as to be pressed on the cut ACF.

Optionally, the ACF attachment device further includes:

the first guide rail is arranged on the pressing plate along the Y direction;

and the two sliding plates are in sliding fit with the first guide rail, and each cutting knife is connected with one sliding plate, and the sliding plates can be locked at any position of the first guide rail.

Optionally, the ACF adhesion device further includes a fastener, a threaded hole is provided on the sliding plate, the fastener is inserted into the threaded hole and is in threaded fit with the threaded hole, and the fastener can abut against the first guide rail.

Optionally, the ACF adhesion device further includes a first driving assembly, the first driving assembly is connected to the pressing plate, an output end of the first driving assembly is connected to the heating plate, the heating plate protrudes from a bottom surface of the pressing plate, the first driving assembly can drive the heating plate to move in an X direction, and the X direction is perpendicular to the Y direction.

Optionally, a sink groove is formed in the top surface of the bearing plate, and when the ACF is cut by the cutter, the heating plate can be accommodated in the sink groove.

Optionally, the ACF adhesion device further includes a second guide rail extending along the X direction, a receiving groove is provided on the bottom surface of the pressing plate, the first driving assembly and the second guide rail are both disposed in the receiving groove, and the heating plate is in sliding fit with the second guide rail.

Optionally, the ACF adhesion device further includes a connection block disposed in the accommodation groove, the connection block is connected to the output end of the first driving component and is in sliding fit with the second guide rail, and the heating plate is connected to the connection block.

Optionally, the ACF attachment device further includes:

the support is arranged on the bearing plate, and the pressing plate is movably connected with the support;

and the output end of the second driving assembly is connected with the pressing plate, and the second driving assembly can drive the pressing plate to move along the Z direction.

Optionally, the ACF attachment device further includes:

the third guide rail is arranged on the bracket along the Z direction;

and the sliding block is fixedly connected with the pressing plate and is in sliding fit with the third guide rail.

Optionally, a groove is formed in the top surface of the bearing plate, an anti-skid pad is arranged in the groove, and the workpiece is placed on the anti-skid pad.

The utility model discloses beneficial effect does:

the ACF adhesion device of the utility model adjusts the distance between the two cutters to a proper value when in use, and the pressing plate is pressed down once, so that the cutters cut ACF protruding out of the workpiece into required size, and the cutting precision and repeatability are high; after the pressing plate is lifted, the heating plate moves to the position below the cutter, at the moment, the pressing plate is pressed down again, the heating plate is in contact with the cut ACF and is heated and pressed down, the ACF is firmly bonded on the workpiece, the heating plate is not in direct contact with the workpiece, and the workpiece is not easy to damage; can cut out the ACF of different length sizes through adjusting the distance between two cutters to satisfy the demand of different work pieces, the commonality is good.

Drawings

Fig. 1 is a plan view of an ACF attachment device according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A in FIG. 1 (in a state where the heating plate is not positioned below the cutter blade);

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a sectional view taken along line A-A in FIG. 1 (with the heating plate positioned below the cutter blade)

Fig. 5 is a cross-sectional view C-C in fig. 2.

In the figure:

100-a workpiece; 200-ACF;

1-a carrier plate; 11-sinking a groove;

2-pressing a plate; 21-a body portion; 22-a mounting portion;

211-a receiving hole; 212-a receiving groove;

3-cutting the knife;

4-heating the plate;

51-a first guide rail; 52-a slide plate; 53-fasteners;

61-a first drive assembly; 62-a second guide rail; 63-connecting blocks;

7-a scaffold;

81-a third guide rail; 82-a slide block;

9-non-slip mat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides an ACF adhesion device which can be used in the technical field of liquid crystal display. Fig. 1 is a plan view of the ACF attachment device of the present embodiment, fig. 2 is a sectional view taken along line a-a of fig. 1, and fig. 3 is a sectional view taken along line B-B of fig. 1, in which the X, Y, and Z directions are perpendicular to each other and only represent spatial directions. Specifically, as shown in fig. 1-3, the ACF attachment device includes a carrier plate 1, a pressing plate 2, two cutters 3 and a heating plate 4, wherein the carrier plate 1 is horizontally disposed and can horizontally support the workpiece 100, the workpiece 100 can be a liquid crystal display panel or a driving circuit board or a printed circuit board, the ACF200 that is not firmly attached and extends along the Y direction is disposed at the position to be attached on the upper surface of the workpiece 100, the dimension of the ACF200 along the Y direction is greater than the dimension to be attached on the workpiece 100, the pressing plate 2 is disposed on the carrier plate 1 and can move along the Z direction relative to the carrier plate 1, the pressing plate 2 is disposed with receiving holes 211, the two cutters 3 are spaced in the receiving holes 211 along the Y direction and have adjustable spacing, the cutting edge of the cutter 3 is flush with the lower surface of the pressing plate 2, so that when the pressing plate 2 moves along the Z direction to press-fit on the upper surface of the workpiece 100, the cutting is convenient and the cutting precision is high; the distance between the two cutters 3 along the Y direction is adjusted, so that the ACF200 can be cut into different lengths, the adhesion requirements of different workpieces 100 can be met, and the universality is good; the heating plate 4 is movably connected to one side of the pressing plate 2 facing the bearing plate 1, and the heating plate 4 can selectively move to the lower part of the cutter 3 so as to press and heat the cut ACF 200. After the pressing plate 2 is pressed down once, the ACF200 is cut into a required size by the cutter 3, then the pressing plate 2 is lifted, the cut redundant ACF200 is taken away, the heating plate 4 moves to the position below the cutter 3, the pressing plate 2 is pressed down again at the moment, the heating plate 4 is in contact with the cut ACF200, the heating plate 4 heats the cut ACF200, the adhesive force of the adhesive layer of the ACF200 is increased by heating, the ACF200 is firmly adhered to the workpiece 100, the heating and pressing process of the heating plate 4 is not in direct contact with the workpiece 100, the workpiece 100 is guaranteed not to be damaged, and the safety is good.

Specifically, as shown in fig. 1 and 2, the ACF attachment device further includes a support 7 and a second driving assembly (not shown), wherein the support 7 is disposed on the carrier plate 1, the pressing plate 2 is movably connected to the support 7, an output end of the second driving assembly is connected to the pressing plate 2, and the second driving assembly is configured to drive the pressing plate 2 to move along the Z direction. Through the motion of second drive assembly drive clamp plate 2, can the accurate control clamp plate 2 push down the displacement, make clamp plate 2 and work piece 100 contact the back, cutter 3 just cuts off ACF200, avoids taking place because of the too big condition that leads to cutter 3 to damage work piece 100 of clamp plate 2 overdraft. Further, as shown in fig. 1 and 2, the ACF attachment device further includes a third guide rail 81 and a slider 82, the third guide rail 81 is disposed on the bracket 7 along the Z direction, the slider 82 is fixedly connected to the pressure plate 2, and the slider 82 is in sliding fit with the third guide rail 81, so that the pressure plate 2 moves more smoothly and smoothly along the vertical direction.

In this embodiment, the pressing plate 2 includes a main body 21 and a mounting portion 22, wherein the receiving hole 211 is disposed on the main body 21, the main body 21 is larger than the mounting portion 22 along the Y-direction dimension, the ACF adhesion device includes two oppositely disposed brackets 7, third guide rails 81 are respectively disposed on the opposite surfaces of the two brackets 7, the mounting portion 22 is provided with sliding blocks 82 along the Y-direction two side surfaces at both ends, each sliding block 82 is in sliding fit with one third guide rail 81, and the motion stability of the pressing plate 2 is further ensured by the cooperation of the two sets of third guide rails 81 and the sliding blocks 82. Alternatively, the second driving assembly may be a linear cylinder disposed on the bearing plate 1 or the bracket 7, and an output end of the linear cylinder is connected to the mounting portion 22 and can output a linear motion along the Z direction. In other embodiments, the second driving assembly may also be a screw-nut pair matched with a motor, wherein the motor is disposed on the bearing plate 1 or the bracket 7, the screw extends along the Z direction and is rotationally matched with the bracket 7, the nut is connected with the mounting portion 22, and the motor drives the screw to rotate, so that the nut drives the entire pressing plate 2 to move along the Z direction.

Preferably, as shown in fig. 2 and 3, a groove is formed in the top surface of the carrier plate 1, a non-slip pad 9 is arranged in the groove, and the workpiece 100 is placed on the non-slip pad 9, so that when the workpiece 100 is pressed down by the pressing plate 2, the workpiece 100 is prevented from shifting in position in a horizontal plane, and the accuracy of the adhesion position of the ACF200 is ensured; furthermore, the arrangement of the non-slip mat 9 in the recess can avoid a positional shift of the non-slip mat 9 relative to the carrier plate 1. In this embodiment, the anti-slip pad 9 may be a rubber pad, which has good anti-slip performance and is soft, and the workpiece 100 is not damaged. Further, as shown in fig. 2 and 3, a positioning groove is provided on the upper side of the anti-slip pad 9, the workpiece 100 is placed in the positioning groove, and the positioning groove can realize the accurate positioning of the workpiece 100 relative to the pressing plate 2 and the cutter 3, thereby further ensuring the cutting accuracy of the ACF 200. It should be noted that each set of ACF200 device includes multiple anti-slip pads 9, the external dimensions of the multiple anti-slip pads 9 are the same to match the grooves on the carrier board 1, the positioning grooves on each anti-slip pad 9 have different dimensions to be respectively used for positioning different workpieces 100, and when different workpieces 100 need to be worked, the anti-slip pads 9 are replaced correspondingly.

Preferably, as shown in fig. 1-3, the ACF attachment device further includes a first guide rail 51 and two sliding plates 52, the first guide rail 51 extends along the Y direction and is disposed on a side of the pressing plate 2 away from the carrier plate 1, the two sliding plates 52 are slidably engaged with the first guide rail 51, each cutting knife 3 is connected to one sliding plate 52, the sliding plates 52 can be locked at any position of the first guide rail 51, so that the two cutting knives 3 can be locked at any position of the first guide rail 51, the relative position of the two cutting knives 3 along the Y direction can be adjusted, and in actual use, the relative position of the two cutting knives 3 can be adjusted according to the corresponding workpiece 100. Specifically, in the present embodiment, the ACF attachment device includes two first guide rails 51, the two first guide rails 51 are respectively disposed at two sides of the accommodating hole 211 along the Y direction, and each sliding plate 52 is respectively in sliding fit with the two first guide rails 51, so as to ensure that the sliding plates 52 move smoothly, and further ensure that the cutter 3 does not have position deviation.

Preferably, as shown in fig. 2, the ACF attachment device further includes a fastener 53, the sliding plate 52 is provided with a threaded hole, the fastener 53 is inserted into the threaded hole and threadedly engaged with the threaded hole, and the fastener 53 can abut against the first guide rail 51. After the fastener 53 is screwed to make the fastener 53 abut against the first guide rail 51, the position of the sliding plate 52 relative to the first guide rail 51, that is, the position of the cutting knife 3, can be locked, and the fastener 53 is screwed reversely to separate the fastener 53 from the first guide rail 51, so that the sliding plate 52 can be unlocked, and the sliding plate 52 can freely slide along the first guide rail 51, and the structure for realizing the position locking of the sliding plate 52 is simple, the operation is convenient, and the cost is low. In the present embodiment, the fastener 53 is a bolt. In other embodiments, the sliding plate 52 may be driven by a driving source to slide along the first guide rail 51, and is not limited in particular.

Fig. 2 is a sectional view taken along a line a-a of fig. 1 when the heating plate 4 is not moved to a position below the cutter 3, and fig. 4 is a sectional view taken along a line a-a of fig. 1 when the heating plate 4 is moved to a position below the cutter 3, as shown in fig. 2 and 4, the ACF adhesion device further includes a first driving member 61, the first driving member 61 is connected to the pressing plate 2 and has an output end connected to the heating plate 4, the heating plate 4 protrudes from a bottom surface of the pressing plate 2, and the first driving member 61 can drive the heating plate 4 to move along the direction X. When the ACF200 is cut, the heating plate 4 is located at the avoiding position, so that the lower surface of the pressing plate 2 can abut against the upper surface of the workpiece 100, and when the cut ACF200 needs to be pressed and heated, the first driving component 61 drives the heating plate 4 to a position below the cutter 3, that is, between the cutter 3 and the ACF200, and at this time, the pressing plate 2 is driven to move along the Z direction again, so that the heating plate 4 can be pressed and pressed on the ACF 200. Specifically, the top surface of the bearing plate 1 is provided with a sink 11, and when the ACF200 is cut by the cutter 3, and the pressing plate 2 is pressed on the workpiece 100, the heating plate 4 is accommodated in the sink 11, so that the heating plate 4 is avoided.

In this embodiment, first drive assembly 61 is the straight line cylinder, and the output of straight line cylinder is connected with hot plate 4, simple structure, convenient operation. In other embodiments, the first driving assembly 61 may also be a structure in which a motor is matched with a screw nut pair, which is a common means of those skilled in the art, and the specific connection relationship is not described herein again. Further, fig. 5 is a cross-sectional view taken from C to C in fig. 2, as shown in fig. 5, the dimension of the heating plate 4 in the X direction is not less than the width of the ACF200, and the length in the Y direction is not less than the maximum distance between the two cutters 3, so as to ensure that the heating plate 4 can heat and press all the positions of the cut ACF200, and ensure the bonding firmness of each position of the ACF 200.

Preferably, as shown in fig. 2, 4 and 5, the ACF attachment device further includes a second guide rail 62 disposed along the horizontal direction, one side of the pressing plate 2 facing the carrier plate 1 is provided with an accommodating groove 212, and the first driving assembly 61 and the second guide rail 62 are both disposed in the accommodating groove 212, so as to ensure that the lower surface of the pressing plate 2 can be pressed on the upper surface of the workpiece 100, and the heating plate 4 is slidably engaged with the second guide rail 62, so that the position accuracy and the movement stability of the heating plate 4 can be ensured. Specifically, in the present embodiment, as shown in fig. 5, the second guide rail 62 extends in the X direction and is disposed at one side of the accommodation hole 211, thereby making the structure of the ACF attachment device more compact. Further, as shown in fig. 4, the ACF attachment device further includes a connection block 63 disposed in the accommodation groove 212, the connection block 63 is connected to the output end of the first driving assembly 61 and is slidably engaged with the second guide rail 62, and the heating plate 4 is connected to the connection block 63, so that the connection between the second guide rail 62 located in the accommodation groove 212, the first driving assembly 61, and the heating plate 4 located outside the accommodation groove 212 is achieved.

Preferably, the ACF adhesion device further includes a control component, the control component is electrically connected to the first driving component 61 and the heating plate 4, respectively, and the control component can control the output movement of the first driving component 61, so as to ensure that the heating plate 4 moves to the position below the cutting knife 3 at a proper time and moves to the position right above the sinking groove 11 at a proper time. The control assembly can also control the temperature of the heating plate 4, so that the heating plate 4 can not only heat the adhesive layer of the ACF200 to a temperature with strong adhesive force, but also cannot scald the workpiece 100. Further, the control assembly is arranged on the bracket 7, is far away from the heating plate 4, does not need to change in position in the working process, and has longer service life.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and for those skilled in the art, there are variations on the specific embodiments and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An ACF bonding apparatus, comprising:

a carrier plate (1) capable of supporting a workpiece (100), wherein an ACF (200) extending in the Y direction is arranged on the upper surface of the workpiece (100);

the ACF cutting device comprises a pressing plate (2) and two cutters (3), wherein the pressing plate (2) is located on the bearing plate (1) and can move relative to the bearing plate (1) along the Z direction, a containing hole (211) is formed in the bottom of the pressing plate (2), the two cutters (3) are arranged in the containing hole (211) at intervals along the Y direction, the distance between the two cutters (3) is adjustable, the cutting edge of each cutter (3) is flush with the lower surface of the corresponding pressing plate (2), and when the pressing plate (2) moves to be pressed on the workpiece (100), the ACF (200) can be cut by the corresponding cutter (3); and

the heating plate (4) is movably connected to one side, facing the bearing plate (1), of the pressing plate (2), and the heating plate (4) can selectively move to the position below the cutter (3) so as to be pressed on the cut ACF (200).

2. The ACF attachment device of claim 1, further comprising:

a first guide rail (51) provided to the platen (2) along the Y-direction;

two sliding plates (52) are in sliding fit with the first guide rails (51), each cutting knife (3) is connected with one sliding plate (52), and the sliding plates (52) can be locked at any position of the first guide rails (51).

3. The ACF attachment device of claim 2, further comprising a fastener (53), wherein the sliding plate (52) is provided with a threaded hole, the fastener (53) is inserted into the threaded hole and threadedly engaged with the threaded hole, and the fastener (53) can abut against the first rail (51).

4. The ACF attachment device of claim 1, further comprising a first driving unit (61), wherein the first driving unit (61) is connected to the pressure plate (2) and has an output end connected to the heating plate (4), the heating plate (4) protrudes from a bottom surface of the pressure plate (2), the first driving unit (61) can drive the heating plate (4) to move along an X direction, and the X direction is perpendicular to the Y direction.

5. The ACF bonding apparatus as claimed in claim 4, wherein the top surface of the carrier board (1) is provided with a sink (11), and the heating plate (4) can be accommodated in the sink (11) when the cutting knife (3) cuts the ACF (200).

6. The ACF bonding apparatus according to claim 4, further comprising a second guide rail (62) extending along the X direction, wherein a receiving groove (212) is provided on a bottom surface of the pressing plate (2), the first driving assembly (61) and the second guide rail (62) are both disposed in the receiving groove (212), and the heating plate (4) is slidably engaged with the second guide rail (62).

7. The ACF bonding device according to claim 6, further comprising a connection block (63) disposed in the accommodation groove (212), wherein the connection block (63) is connected to an output end of the first driving unit (61) and slidably engaged with the second guide rail (62), and the heating plate (4) is connected to the connection block (63).

8. The ACF attachment device of any one of claims 1 to 7, wherein the ACF attachment device further includes:

the support (7) is arranged on the bearing plate (1), and the pressing plate (2) is movably connected with the support (7);

and the output end of the second driving component is connected with the pressing plate (2), and the second driving component can drive the pressing plate (2) to move along the Z direction.

9. The ACF attachment device of claim 8, further comprising:

a third guide rail (81) provided on the bracket (7) in the Z direction;

and the sliding block (82) is fixedly connected with the pressing plate (2), and the sliding block (82) is in sliding fit with the third guide rail (81).

10. The ACF adhesive device according to any of claims 1-7, wherein the top surface of the carrier plate (1) is provided with a groove, a non-slip pad (9) is arranged in the groove, and the workpiece (100) is placed on the non-slip pad (9).

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