JP2016029411A - Separating apparatus for display device and separating method for display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separating apparatus for a display device capable of separating a display device bonded to a case with an adhesive from the case with a small load.SOLUTION: A separating apparatus for a display device includes a suction unit 39 for sucking a thin display device 4 which is bonded to a case 2 with an adhesive 61 so as to rotate on a pin 38. While softening the adhesive 61 with a heater 51, the suction unit 39 is lifted up to separate the thin display device 4 from the case 2 which is fixed to a holder block 21. When the suction unit 39 is rotated on the pin 38 to incline, the thin display device 4 is gradually peeled off from one end at the pin 38 side. Thus, the thin display device 4 is peed off from the case 2 with a small tensile force. By pulling down the one end of the case 2 with a tensioning part 25 provided to the holder block 21, the thin display device 4 can be peeled off from the case 2 with a smaller tensile force.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a display device separation apparatus and a display device separation method.

  Some works such as portable terminals are equipped with a thin display device. The display device is fixed to an opening formed in the workpiece case using an adhesive. When the work breaks down, the display device may be removed from the case and reused. In particular, when the work is a mobile phone, a touch panel type LCD (Liquid Crystal Display) is often used for the display device. However, since the LCD is expensive, after being removed from the case of the mobile phone, There is a high need for reusing LCDs.

  Here, when removing the display device from the work case, a tool such as a spatula coated with an organic solvent is inserted between the case and the display device, and the display device is removed from the case while melting the adhesive along the outer periphery of the display device. I was removing it. For example, in a conventional structure in which a display panel that is a display device is removed from an operation panel that is a case, a notch is formed in the operation panel in advance deeper than the thickness of the display panel to facilitate insertion of a tool. Also, as a method of removing the glass adhered to the case, it is easy to remove the glass from the case by providing a through hole in the part where the glass of the case overlaps, inserting a tool into the through hole, and pushing the glass away from the case with the tool doing.

JP 2000-337026 A JP 2001-12746 A

By the way, when the work is a portable terminal or the like, waterproofness, dustproofness, and durability are required. Therefore, it is necessary to form a strong adhesive structure without a gap between the case and the display device. Here, in order to form a strong adhesion structure, it is necessary to use an adhesive having a high adhesion force and to increase the adhesion area between the case and the display device. However, as the adhesive strength of the adhesive increases and the adhesive area increases, a large tensile force is required to separate the display device from the case. In addition, it is necessary to firmly hold the case. In this way, in the process of separating the display device from the portable terminal or the like, a large external force is applied to the case and the display device, so that the load received by the display device such as an LCD increases and the defect rate of the display device after removal is increased. It is a factor.
The present invention has been made in view of such circumstances, and an object thereof is to pull the display device away from the case with a low load.

  According to one aspect of the embodiment, the heater that heats the adhesive that bonds the display device and the case, the fixing portion that fixes the case, the suction portion that sucks the display device, and the display device It is movable in a direction away from the case and has a rotation shaft at one end portion that rotatably supports the suction portion, and the rotation shaft intersects the direction in which the display device is separated from the case. And a support device that extends. A separation device for a display device is provided.

  Further, according to another aspect of the embodiment, a case in which the display device is bonded with an adhesive is fixed, the display device is sucked by a suction portion that can be rotated by a rotation shaft, and the adhesive is heated. The display device is moved from the one end side where the rotation shaft is disposed while the suction portion is moved in a direction to be softened and moved away from the case, and the suction portion is inclined around the rotation shaft. A method for separating a display device characterized by being separated from a case is provided.

  In separating the display device from the case, the area on which the tensile force acts in the display device can be reduced, and the display device can be reliably peeled off from the case while reducing the load applied to the display device during the separation work.

FIG. 1 is an exploded perspective view showing an example of a workpiece having a display device to be separated in the separation device for a display device according to an embodiment of the present invention. FIG. 2 is a side view showing an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. 3A and 3B show an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. FIG. 3A is a view as viewed from an arrow A in FIG. 2, and FIG. 3B is a view as viewed from an arrow B in FIG. It is. FIG. 4 is a side view showing a state in which a workpiece is installed in a receiving part in an example of a schematic configuration of a separation device for a display device according to an embodiment of the present invention. FIG. 5 is a side view in which a workpiece is arranged below the separation unit in an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. FIG. 6A is a side view in which a workpiece is brought into close contact with a separation unit in an example of a schematic configuration of a separation device for a display device according to an embodiment of the present invention. FIG. 6B is an enlarged view of a part of FIG. 6A in an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. FIG. 7 is a side view showing a state in which one end portion of the case is pulled down by the engaging member in an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. FIG. 8 is a side view showing a state in which one end portion of the display device is lifted while the support portion is lifted and the suction portion is inclined in an example of a schematic configuration of the display device separation device according to the embodiment of the present invention. . FIG. 9 is a side view showing a state where the support portion is further pulled up from FIG. 8 in an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention. FIG. 10 is a side view showing a state where the display device is peeled off from the case in an example of a schematic configuration of the separation device of the display device according to the embodiment of the present invention.

The objects and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims.
The foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the invention.

First, an example of a workpiece will be described with reference to the exploded perspective view of FIG.
In the work 1, a substrate, a power source, etc. (not shown) are arranged in an internal space formed by overlapping two cases 2 and 3. Further, the thin display device 4 is fixed to the opening 2 </ b> A formed in one case 2 with an adhesive 61. The adhesive 61 is applied, for example, in a rectangular frame shape continuous with the elongated rectangular opening 2A. In this case, the thin display device 4 is firmly fixed and fixed to the case 2 via a square frame-shaped adhesive 61.

  A recess 6 is formed on the side surface of the case 2. For example, when the work 1 is a mobile phone, the thin display device 4 uses a touch panel type LCD (Liquid Crystal Display), performs information processing based on the operation of the owner, and displays the processing result in the thin display device 4. Etc. Moreover, the recessed part 6 in case the workpiece | work 1 is a mobile telephone becomes a hole which lets a strap pass, for example. In addition, the recessed part 6 is not limited to a hole, The level | step difference, protrusion, etc. which were formed in the case 2 can be used.

Next, a schematic configuration of a thin display device separation device (hereinafter referred to as a display device separation device) will be described with reference to FIG.
The display device separating apparatus 10 has a workpiece receiving portion 12 that is a fixed portion on which a workpiece 1 such as a terminal device having the thin display device 4 is placed on a base 11. Further, the display device separating apparatus 10 includes a separation unit 13 that removes the thin display device 4 from the work 1, and a control device 15 that controls the work receiving unit 12 and the separation unit 13.

  The base 11 has a moving mechanism (not shown) that moves the workpiece receiving unit 12 between the loading / unloading position shown in FIG. 2 and the separation position below the separation unit 13. An example of the moving mechanism is a cylinder. When the moving mechanism is a cylinder, the rod that advances and retreats is fixed to the work receiving portion 12, and the main body portion that supports the rod so as to freely advance and retreat is fixed to the base 11. The display device separating apparatus 10 may have a configuration in which the workpiece receiving unit 12 is fixed below the separating unit 13 without having a moving mechanism.

  The work receiving unit 12 includes a receiving base 21 on which the work 1 can be positioned and placed. A plurality of clampers 22 that hold the workpiece 1 are attached to the cradle 21. For example, the clamper 22 has a pressing member that presses the case 2 from the side by driving the cylinder, and can employ a configuration in which the workpiece 1 is fixed by pressing the case 2 against a block fixed to the cradle 21 with the pressing member. .

  Further, a tension portion 25 is provided at one end of the workpiece receiving portion 12. The tension part 25 has a cylinder 27 fixed to the work receiving part 12. In the cylinder 27, a rod that can be moved forward and backward extends vertically upward, and the tip of the rod is bent substantially horizontally to form a tension claw 26. The tension claw 26 is an engagement member having a shape that extends upward from the base end portion and then bends substantially horizontally. Further, the tension portion 25 has a shape that can be engaged with a recess 6 that is formed in advance on the case 2 of the workpiece 1. Furthermore, the tip portion of the tension claw 26 is sized to be inserted into the recess 6. Note that the cradle 21 is not provided below the tension claw 26.

Next, the separation unit 13 will be described.
As shown in FIG. 2, the separation unit 13 is attached to the ceiling portion 32 of the frame 31 attached to the base 11. The separation unit 13 has a cylinder 35 fixed to the ceiling portion 32 downward. A plurality of rods 35 </ b> A that move up and down extend downward from the cylinder 35. A separation portion 36 is provided at the lower end of the rod 35A. As shown in FIG. 2 and FIG. 3A, which is a view taken in the direction of arrow A in FIG. 2, the separating portion 36 has a support portion 37 fixed to the rod 35A. A suction portion 39 is attached so as to be rotatable by a pin 38. When the cradle 21 is disposed below the separation unit 13, only one pin 38 is disposed at the same end as the end where the tension claw 26 is disposed. In this embodiment, the pin 38 extends in a direction substantially orthogonal to the tip of the tension claw 26 and in a direction orthogonal to the advancing / retreating direction of the rod 35 </ b> A of the cylinder 35. More specifically, when the advancing / retreating direction of the rod 35A of the cylinder 35 is the Z direction and the tension claw 26 extends in the Y direction parallel to the longitudinal direction of the thin display device 4, the pin 38 extends in the X direction. Yes.

  As shown in FIG. 2, one end of a tension spring 40 that is an urging member is attached to the other end of the support portion 37. The other end of the tension spring 40 is attached to the suction portion 39. The tension spring 40 urges the suction portion 39 and the other end of the support portion 37 to be attracted to each other, that is, to attract the suction portion 39 to the support portion 37 supported by the cylinder 35. Further, a pin 42 is fixed to the side surface of the other end portion of the support portion 37. A frame-shaped regulating plate 43 is attached to an area corresponding to the pin 42 of the suction portion 39 so as to surround the pin 42. The pin 42 and the restriction plate 43 are provided to restrict the inclination angle of the suction part 39 with respect to the support part 37. In other words, the suction portion 39 can rotate around the pin 38 between the inclination angle at which the pin 42 contacts the upper surface of the regulating plate 43 and the inclination angle at which the pin 42 contacts the bottom surface. When the other end of the suction portion 39 is pulled up by the tension spring 40 until the bottom surface of the regulating plate 43 and the pin 42 come into contact with each other, the suction portion 39 is disposed substantially horizontally.

  Furthermore, as shown in FIG. 2 and FIG. 3B, which is a view taken in the direction of arrow B in FIG. 2, a heater 51 that heats the workpiece 1 is provided on the outer edge portion of the lower surface of the suction portion 39. . The heater 51 extends in a frame shape downward from the lower surface of the adsorption portion 39. The heater 51 is larger than the outer shape of the case 2 and can heat the workpiece 1 with radiant heat. A cooling unit 52 that cools the work 1 and a suction pad 53 that sucks the work 1 are attached to the lower surface of the suction unit 39 and inside the heater 51. The cooling unit 52 includes a plurality of cooling nozzles 55 arranged near the approximate center of the lower surface of the suction unit 39. The plurality of cooling nozzles 55 extend vertically downward, and an opening for ejecting cold air supplied from a cold air generator (not shown) is formed at the lower end. The number and arrangement of the cooling nozzles 55 are not limited to the illustrated number and arrangement as long as the entire surface of the thin display device 4 of the workpiece 1 can be cooled substantially uniformly. Further, the cooling unit 52 includes a windbreak wall 56 disposed between the cooling nozzle 55 and the heater 51. The windbreak wall 56 is formed in a frame shape in an area above the case 2 outside the thin display device 4 of the work 1.

  Further, a plurality of suction pads 53 are disposed in a region inside the windbreak wall 56 at a position avoiding the cooling nozzle 55 and connected to an exhaust device (not shown). In the example shown in FIG. 3B, six suction pads 53 are arranged on the lower surface of the suction portion 39 at equal intervals.

Next, a method for separating the thin display device 4 will be described.
First, as an initial state, the control device 15 pulls the workpiece receiving unit 12 from below the separation unit 13 and moves it to the loading / unloading position shown in FIG. 2 and opens the clamper 22. In this state, as shown in an enlarged view in FIG. 4, the worker or the robot places the workpiece 1 to be separated on the receiving base 21. At this time, the operator or the robot inserts the tension claw 26 into the recess 6 of the case 2 of the workpiece 1.

  Thereafter, as shown in FIG. 5, the control device 15 holds the workpiece 1 with the clamper 22, and then moves the workpiece 1 below the separation unit 13. Subsequently, as illustrated in FIG. 6A, the control device 15 drives the cylinder 27 to lower the separation unit 36 toward the work 1, thereby bringing the plurality of suction pads 53 into close contact with the thin display device 4. Subsequently, the exhaust device (not shown) is driven, and the mold display device 4 is sucked to the separation unit 36 by the plurality of suction pads 53. At the same time, the control device 15 energizes the heater 51 to heat the workpiece 1. As schematically shown in the enlarged view of FIG. 6B, the heater 51 heats the workpiece 1 from the outer peripheral side and the side by radiant heat as indicated by an arrow AR1. Thereby, the adhesive 61 between the case 2 and the thin display device 4 is heated. On the other hand, the cool nozzle 55 cools the thin display device 4 by ejecting cold air as indicated by an arrow AR2. The adhesive 61 is heated by the heater 51 and the thin display device 4 is cooled by the cooling nozzle 55, thereby preventing thermal damage in the thin display device 4. Further, as shown by the arrow AR3, the windbreak wall 56 does not directly apply the cold air to the heater 51. Therefore, the heat generated by the heater 51 can be efficiently transmitted to the workpiece 1.

  Heating by the heater 51 is continued until the adhesive 61 is softened. For example, when a predetermined time has elapsed as the time for the adhesive 61 to soften, the control device 15 lowers the tension claw 26 of the tension portion 25 while continuing the heating and cooling, so that one end portion of the case 2 is moved. Pull down. As a result, as shown in FIG. 7, the case 2 in the vicinity of the recess 6 is deformed downward by the tension claw 26. Since the thin display device 4 is attracted to the suction pad 53 and does not move, the softened adhesive 61 is peeled off, and the thin display device 4 in the vicinity of the recess 6 is separated from the case 2. At this time, the thin display device 4 and the case 2 in other regions remain in close contact.

  Subsequently, as illustrated in FIG. 8, the control device 15 raises the separation unit 36 and raises the thin display device 4. At this time, since the suction portion 39 on the concave portion 6 side is connected to the support portion 37 via the pin 38, the suction portion 39 rises together with the rod 35A of the elevating cylinder 35. On the other hand, since the thin display device 4 and the case 2 remain in close contact with each other at the end opposite to the recess 6, the other end of the suction portion 39 hardly rises. As a result, the suction portion 39 rotates and tilts in the direction indicated by AR4 about the pin 38, and the other end side is lowered relative to the one end side of the suction portion 39, and only the concave portion 6 side is raised. Further, the tension spring 40 extends by being pulled up and down by the lifting force of the elevating cylinder 35 and the adhesive force of the adhesive 61. As a result, a slight gap is formed between the bottom surface of the regulating plate 43 at the other end of the suction portion 39 and the pin 42.

  If the suction part 39 is further raised in this state, the suction part 39 is further inclined. This is because the case 2 is fixed and does not move, whereas the suction part 39 rises and the suction part 39 is rotatable. In the display device 4 sucked by the sucking unit 39, the part already separated from the case 2 rises while being tilted together with the sucking unit 39. On the other hand, the portion of the adhesive 61 that is in close contact with the case 2 cannot rise. As a result, in the vicinity of the portion of the display device 4 that is already separated from the case 2, the tensile force by the separation unit 13 acts on the portion that is bonded to the case 2 with the adhesive 61. At this time, since the adhesive 61 is softened by the heater 51, the adhesive 61 is adhered by the adhesive 61 in the vicinity of the portion already separated from the case 2 of the display device 4 by the tensile force of the separation unit 13. The area is peeled away from case 2.

  In this way, as the separation unit 13 raises the suction portion 39, the adhesive 61 is moved from the one end portion side of the case 2 along the outer periphery of the case 2 while the suction portion 39 increases the inclination angle. Gradually peel toward the other end. That is, as the suction part 39 rises, the thin display device 4 is gradually pulled away from the case 2 starting from the end part separated from the case 2 by the tension claw 26. Since the pulling force by the separation unit 13 acts on a portion that is pulled away from the case 2 when the suction portion 39 rises while tilting, the pulling force applied to the thin display device 4 is applied to the entire thin display device 4 simultaneously with the case 2. It becomes smaller compared with the case where it pulls away from.

  Then, as shown in FIG. 9, the thin display device 4 is gradually peeled off from the case 2 by gradually peeling the adhesive 61 from the concave portion 6 side. When the thin display device 4 is peeled off all around the case 2, the thin display device 4 is separated from the case 2. At this time, as shown in FIG. 10, the other end portion of the suction portion 39 is attracted to the support portion 37 by the tension spring 40, so that the suction portion 39 rotates around the pin 38 in the direction indicated by the arrow AR5. The part 39 becomes horizontal. Along with this, the thin display device 4 sucked by the sucking portion 39 is also arranged horizontally. The control device 15 stops heating by the heater 51 and cooling by the cooling nozzle 55. Further, when the suction by the suction pad 53 is released, the thin display device 4 can be removed. On the other hand, the moving mechanism is driven to retract the workpiece 1 from which the thin display device 4 is removed from the lower side of the separation unit 13 and to open the clamper 22. Thereby, the workpiece 1 from which the thin display device 4 is removed can be taken out.

  As described above, in the display device separating apparatus 10, the thin display device 4 is gradually peeled off from the case 2 by tilting the suction portion 39, so that the thin display device 4 Compared with the case where the whole is peeled off at once, the area on which the tensile force acts can be reduced. As a result, the thin display device 4 can be peeled off from the case 2 with a small tensile force. In the process of separating the thin display device 4 from the case 2, the burden on the thin display device 4 is reduced, the defect rate when removed from the case 2 can be reduced, and the reuse rate of the thin display device 4 can be improved.

  Further, since the adhesive 61 is heated from the outer periphery of the case 2 and the thin display device 4 is cooled, only the adhesive 61 can be heated, and the load on the thin display device 4 can be reduced. Before the thin display device 4 is pulled up by providing the tension portion 25, a part of the case 2 is pulled down to be deformed, so that the thin display device 4 can be peeled off from the case 2 with a small tensile force.

  Note that, as shown in FIG. 10, the pin 38 that is the rotation shaft is X perpendicular to the Z direction that is the direction in which the thin display device 4 is pulled away from the case 2 and parallel to the short side of the thin display device 4. Extending in the direction. However, the pin 38 only needs to be able to tilt the suction portion 39 that sucks the thin display device 4 with respect to the Z direction, and does not necessarily extend in a direction orthogonal to the Z direction. Further, when the thin display device 4 has an elongated shape in the Y direction perpendicular to the XZ direction, the thin display device 4 can be easily separated from the case 2 by disposing the tension portion 25 at one end portion in the Y direction. The tension part 25 may fix the tension claw 26 to the receiving part 21.

  All examples and conditional expressions given here are intended to help the reader understand the inventions and concepts that have contributed to the promotion of technology, and such examples and It is to be construed without being limited to the conditions, and the organization of such examples in the specification is not related to showing the superiority or inferiority of the present invention. While embodiments of the present invention have been described in detail, various changes, substitutions and variations can be made thereto without departing from the spirit and scope of the present invention.

The features of the above embodiment will be added below.
(Additional remark 1) The heater which heats the adhesive which has adhere | attached the display apparatus and the case, the fixing | fixed part which fixes the said case, the adsorption | suction part which adsorb | sucks the said display apparatus, and the direction which pulls the said display apparatus away from the said case A support portion that is movable and has a rotation shaft that rotatably supports the suction portion at one end, and the rotation shaft extends in a direction intersecting a direction in which the display device is pulled away from the case; A separation device for a display device, comprising:
(Additional remark 2) It has an engaging member which can be engaged with the said case in the one end part of the said fixing | fixed part, The separation apparatus of the display apparatus of Additional remark 1 characterized by the above-mentioned.
(Supplementary note 3) The display device separation device according to supplementary note 2, wherein the engagement member is supported by the fixing portion so as to be movable in a direction in which the display device is pulled away from the case.
(Additional remark 4) It has a biasing member which biases the said adsorption | suction part toward the said support part in the other end part of the said support part, The separation apparatus of the display apparatus of Additional remark 2 or Additional remark 3 characterized by the above-mentioned.
(Additional remark 5) The said adsorption | suction part has a nozzle which ejects cool air toward the said display apparatus as a cooling part which cools the said display apparatus, and the windbreak wall arrange | positioned between the said nozzle and the said heater. The separation device for a display device according to any one of appendices 1 to 4, characterized by:
(Appendix 6) A case where the display device is bonded with an adhesive is fixed, the display device is adsorbed by an adsorbing portion which can be rotated by a rotation shaft, the adhesive is heated and softened, and the display device is The suction portion is moved in a direction away from the case, and the display device is pulled away from the case from one end side where the rotation shaft is disposed while the suction portion is inclined around the rotation shaft. A method for separating display devices.
(Appendix 7) Before moving the display device in the direction of separating from the case, the engaging member engaged with one end portion of the case is moved, and the one end portion of the case is moved away from the display device. The method for separating a display device according to appendix 6, wherein:
(Supplementary note 8) The supplementary note 6 or Supplementary note 7, wherein after the display device is separated from the case, the suction portion that sucks the display device is urged by a urging member and arranged horizontally. A method for separating display devices.

1 Work piece 2 Case 4 Display device 21 Receiving part (fixing part)
26 Engagement member 37 Support portion 38 Rotating shaft 39 Adsorption portion 40 Tension spring (biasing member)
51 Heater 52 Cooling Unit 55 Cooling Nozzle 56 Windbreak Wall 61 Adhesive

Claims (5)

A heater for heating an adhesive that bonds the display device and the case;
A fixing part for fixing the case;
An adsorbing portion for adsorbing the display device;
The display device is movable in a direction away from the case, and has a rotation shaft at one end for rotatably supporting the suction portion, and the rotation shaft is in a direction away from the case. And a support portion extending in a crossing direction,
A separation device for a display device, comprising:   The separation device for a display device according to claim 1, further comprising an engaging member that can be engaged with the case at one end of the fixing portion.   The separation device for a display device according to claim 2, further comprising an urging member that urges the suction portion toward the support portion at the other end portion of the support portion.   The suction unit includes a nozzle that blows out cool air toward the display device, and a windbreak wall disposed between the nozzle and the heater as a cooling unit that cools the display device. The separation device for a display device according to any one of claims 1 to 3. Fix the case where the display device is bonded with adhesive,
Adsorb the display device by an adsorbing part that can be rotated by a rotation axis;
The adhesive is heated and softened, the suction unit is moved in a direction in which the display device is pulled away from the case, and the display device is disposed on the rotation shaft while the suction unit is inclined around the rotation shaft. The display device is separated from the case from the one end side.

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