JPWO2011155443A1 - Plate-shaped member transfer device and suction pad - Google Patents

Abstract

A plate-shaped member transfer device that transfers a glass plate P as a plate-shaped member while being sucked and held by a negative pressure acting through the suction pad, the suction pad 30 having protrusions 39 on the inner surface, When the protective sheet B stacked on the surface of P is adsorbed, the projection 39 penetrates the protective sheet B, and a ventilation part b1 is formed around the penetration part by the projection of the protection sheet. The plate P is sucked and held together with the protective sheet B.

Description

  The present invention relates to a glass plate, a resin plate, a laminate plate formed by laminating a glass layer and a resin layer, a transfer device for transferring a plate member such as a metal plate, and a suction pad for the device, and more Specifically, the present invention relates to a transfer device and a suction pad for transferring a plate-like member with a protective sheet together with the protective sheet.

  For example, glass substrates used for manufacturing display panels for image display devices such as liquid crystal displays and plasma displays, glass substrates used as substrates for electronic display functional elements and thin film formation, glass plates for building structures, etc. These are collectively referred to as a glass plate) and are transferred to a predetermined position in processes such as production, conveyance, and storage. For the transfer, a transfer device of a type in which a glass plate is sucked by a suction pad and the suction pad is moved to a predetermined position by a moving means is widely used. The suction pad connected to the vacuum source sucks the glass plate by applying a negative pressure to the inside of the pad while being applied to the glass plate.

On the other hand, in order to prevent scratches and dirt after processing, or to prevent scratches due to contact between the glass plates when they are loaded on the packing pallet, the surface of the glass plate is a protective sheet (paper, synthetic resin, etc.). It is often transported in a state covered with paper. Moreover, the glass plate for flat panel displays adsorb | sucks with a suction pad through a protective sheet so that the contact trace of a suction pad may not be left. In any case, since the negative pressure of the suction pad first acts on the protective sheet, it is necessary to suck the glass plate through the protective sheet.

For example, when an air-permeable protective sheet such as paper is used, an adsorption force can be applied to the glass plate through the protective sheet. For example, in the transfer devices described in Patent Documents 1, 2, and 3, negative pressure is exerted on the glass plate by using a porous or other breathable protective sheet. However, in these cases, the material of the protective sheet is limited. In particular, when a glass plate laminated on a packing pallet is transported by a truck or the like, the glass plate may be displaced due to vibration. Therefore, a foamed resin sheet that has cushioning properties and is less likely to be displaced is often used as a protective sheet. In this case, the glass plate cannot be adsorbed through the protective sheet.

In this regard, in the apparatus described in Patent Document 4, only the foamed resin sheet used as the protective sheet is once adsorbed by the suction pad, and the sheet surface is brought into contact with the needle-like or knife-like piercing member to form the cut. And give it breathability. And the negative pressure is exerted on a glass plate by moving the protection sheet on a glass plate, applying a suction pad to a notch formation position, and attracting | sucking. According to this apparatus, a negative pressure can be reliably exerted on the glass plate regardless of the material of the protective sheet. However, it has been necessary to go through a process of forming a cut by adsorbing only the protective sheet, and there is a drawback that the process and the apparatus are complicated.

JP2004-136926 (paragraph 0009) Shoko Sho 60-11860 (column 2) JP2004-153157 (paragraph 0013) JP-A-2005-75482 (paragraphs 0041-0045)

Then, an object of this invention is to provide the transfer apparatus which can perform simply and reliably adsorption | suction of plate-shaped members, such as a glass plate, via a protective sheet, and an adsorption pad for it.

  In order to achieve the above object, the present invention provides a plate-like member transfer device for transferring the plate-like member in a state where the plate-like member is sucked and held by a negative pressure acting via a suction pad, the suction member being The pad has a protrusion on its inner surface, and when the protective sheet superimposed on the surface of the plate-like member is adsorbed by negative pressure, the protrusion penetrates the protective sheet, and the portion of the protective sheet penetrated by the protrusion An apparatus for transferring a plate-like member is provided, wherein a ventilation portion is formed around the plate member, and the plate-like member is sucked and held together with the protective sheet by a negative pressure acting on the plate-like member through the ventilation portion. To do.

  As described above, in this transfer device, the suction pad has a protrusion on its inner surface, and when the protective sheet on the surface of a plate-like member such as a glass plate is sucked by negative pressure, the protrusion penetrates the protective sheet. Along with this, a ventilation part is formed around the penetrating part by the protrusion in the protection sheet, and the suction pad adsorbs and holds the plate member together with the protection sheet by negative pressure acting on the plate member through the ventilation part. To do. Therefore, it is possible to easily and reliably adsorb the glass plate through the protective sheet based on a simple configuration in which a protrusion is provided on the inner surface of the pad and a ventilation portion is formed in the protective sheet by the protrusion using negative pressure. it can.

  The protrusion may have a cutting edge extending along a protruding direction on a surface thereof. This cutting blade penetrates the protective sheet when the protective sheet is adsorbed by the suction pad, and reliably forms a ventilation portion around the penetrating portion.

  The protrusion may have a polygonal pyramid shape, and the polygonal pyramid ridge line may constitute the cutting blade. Thereby, the hole formed in a protection sheet produces a ventilation part by the cut | interruption extended in the radial direction from the ridgeline of a polygonal pyramid. In particular, since the cut is formed so as to extend long on the protective sheet that is spread by suction, the suction force acts on the plate member more effectively.

  The suction pad includes a base portion connected to a vacuum source and a skirt portion extending from the base portion in a bowl shape to form an opening end surface, and the protrusion is provided on the base portion. be able to. Thus, the protrusion provided on the base portion is located at the heel end of the skirt-like skirt portion. Therefore, it is possible to reliably prevent the plate-like member from coming into contact with the protrusion during suction by negative pressure. This point is particularly effective when the skirt portion is elastically deformed toward the plate-like member with suction.

  The suction pad includes a base portion connected to a vacuum source, and a skirt portion extending from the base portion in a bowl shape to form an opening end surface, and the protrusion is in the vicinity of a boundary between the base portion and the skirt portion It can be provided. The sucked protection sheet is deformed so as to substantially follow the skirt portion and the base portion and reaches the protrusion. On the other hand, when the skirt part is elastically deformed with suction, the deformation amount is small on the base end side near the base part, so that the plate-like member is difficult to reach the vicinity of the boundary between the skirt part and the base part. Contact with is reliably prevented.

  The suction pad may be provided with a stopper extending from the inner surface thereof toward the opening end surface, and the stopper may extend beyond the tip of the protrusion to a position before the opening end surface. If this suction pad is used, even if the skirt is bent and the plate-shaped member approaches the protrusion when the protective sheet is sucked, the plate-shaped member comes into contact with the stopper, so Since the movement is restricted, it is reliably prevented that the plate-like member is damaged due to contact with the protrusion.

  The protrusion can be made of metal. Thereby, the machinability which penetrates a protection sheet at the time of adsorption | suction by an adsorption pad becomes favorable, and favorable machinability is maintained over a long period of time.

  In order to achieve the above object, the present invention is a suction pad that communicates with a vacuum source that generates a negative pressure, and has a protrusion on the inner surface of the pad, and the protrusion has a cutting edge extending along the protruding direction on the surface. The suction pad characterized by this is provided.

  Thus, since the suction pad has a protrusion on its inner surface, when the protective sheet is stacked on the surface of the plate-like member, the protrusion penetrates the sucked protective sheet. Along with this, a ventilation part is formed around the penetrating part by the protrusion in the protection sheet, and the suction pad adsorbs and holds the plate member together with the protection sheet by negative pressure acting on the plate member through the ventilation part. To do. Therefore, it is possible to simply and reliably adsorb the plate-like member via the protective sheet based on a simple configuration in which a protrusion is provided on the inner surface of the pad and a ventilation portion is formed in the protective sheet by using the negative pressure. Can do.

  The protrusion may have a polygonal pyramid shape, and the polygonal pyramid ridge line may constitute the cutting blade. Thereby, the hole formed in a protection sheet produces a ventilation part by the cut | interruption extended in the radial direction from the ridgeline of a polygonal pyramid. In particular, since the cut is formed so as to extend long on the protective sheet that is spread by suction, the suction force acts on the plate member more effectively.

  As described above, according to the present invention, it is possible to provide a transfer device that can easily and reliably suck a plate-like member such as a glass plate via a protective sheet, and a suction pad therefor.

It is a front view showing roughly one embodiment of the transfer device concerning the present invention. It is a longitudinal cross-sectional view which shows the suction pad in the transfer apparatus shown in FIG. It is a bottom view of the suction pad shown in FIG. It is a longitudinal cross-sectional view which shows the use condition of the suction pad shown in FIG. It is a bottom view which shows the punching | piercing form of the protection sheet in the use condition of FIG. It is a figure which shows the form of the processus | protrusion used for the suction pad of FIG. It is a figure which shows the other form of the protrusion used for the suction pad of FIG. It is a figure which shows the other form of the protrusion used for the suction pad of FIG. It is a figure which shows the other form of the protrusion used for the suction pad of FIG. It is a figure which shows the other form of the protrusion used for the suction pad of FIG. It is a figure which shows the other form of the protrusion used for the suction pad of FIG. It is a longitudinal cross-sectional view which shows other embodiment of the suction pad which concerns on this invention. It is a bottom view of the suction pad shown in FIG. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad. It is a longitudinal cross-sectional view which shows the other form of a suction pad.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The same or similar parts in the drawings are denoted by the same reference numerals and description thereof is partially omitted.

  FIG. 1 is a front view schematically showing an embodiment of a transfer device according to the present invention. This transfer device includes a moving means 1 supported by a rail 10 and a suction device 3 coupled to the moving means 1.

  The moving means 1 includes a sliding portion 11 that slides along the rail 10, a swiveling portion 12 that is coupled to the sliding portion and allows rotation about a vertical axis, and is coupled to the swiveling portion to move up and down. An elevating part 13 that expands and contracts in the direction, a first arm 14 that is coupled to the lower end of the elevating part and rotates about a horizontal axis, and a horizontal axis that is coupled to the first arm and supports the suction device 3 at the tip. And a second arm 15 that rotates around.

  The rail 10 is installed on a ceiling or the like, and extends between stations to which a plate-like member, for example, a glass plate P is to be transferred. The sliding part 11, the turning part 12, the elevating part 13, the first arm 14, and the second arm 15 are configured to perform predetermined operations by driving means such as an electric motor incorporated therein, for example. Since various known structures can be applied to this, detailed description is omitted here. Moreover, as a moving means, it can be set as various forms, such as what supported a rocking arm on the turning arm installed on the floor surface, what was supported on a rail, and a robot arm-like thing.

  In each station, the glass plate P may be in any installation state such as a single unit or stacked layers, horizontal, vertical or diagonal. Further, the glass sheet P is overlaid with protective sheets for surface protection and the like. The protective sheet (so-called slip sheet) is a synthetic resin such as a foamed resin sheet, paper, or the like. The protective sheet B is desirably stretchable. Thereby, at the time of adsorption | suction by the suction pad mentioned later, a protection sheet does not become a wrinkle but is easy to deform | transform along a pad inner surface, and a through-hole can be reliably formed with a protrusion.

  The suction device 3 includes a support plate 31 supported at the tip of the second arm 15, a plurality of suction pads 30 attached to the support plate, one end connected to the support plate 31, and the other end a sliding portion. 11 and a suction hose 33 connected to a vacuum source (not shown).

  In this embodiment, the support plate 31 has a flat plate shape with dimensions slightly smaller than the glass plate to be transferred, and has a ventilation path formed therein (not shown). The air passage extends from the connection portion 34 of the suction hose 33 to each suction pad 30.

  As shown in the longitudinal sectional view of FIG. 2 and the bottom view of FIG. 3, the suction pad (suction head) 30 includes a base portion 35 and a skirt portion 37 extending from the base portion in a hook shape. The base portion 35 includes a base main body 351 and an adapter 352 extending from the base main body and connected to the air passage of the support plate 31. The adapter 352 is formed with a through hole 352a for transmitting a negative pressure acting on the air passage, and the base body 351 is formed with a through hole 351a communicating with the through hole 352a. A threaded portion is formed on the outer peripheral surface of the adapter 352, and a nut 353 is screwed into the threaded portion. The suction pad 30 is attached by inserting an adapter 352 into a through hole of a pad attachment plate (bracket) such as the support plate 31 and fastening a nut 353.

  The skirt portion 37 is formed of a flexible material such as silicon or NBR, extends from the base body 351 in a bowl shape, and forms an open end surface 371 on the opposite side of the base body 351. The base body 351 and the skirt portion 37 form a concave inner surface 38 for allowing the suction pad 30 to apply a suction force.

  In this embodiment, the skirt portion 37 has a bell-like diameter expanded from the base portion 35 side to the opening end surface 371 side. Thereby, when it applies to a protective sheet, a front-end | tip part tends to bend and the negative pressure maintenance in a skirt part is ensured. Alternatively, as shown in FIG. 9 (d), the skirt portion 37 may have a cylindrical shape extending on a plane on the base portion 35 side and extending to the opening end surface 371 with substantially the same diameter. In this case, it is desirable to provide a pad 372 with high flexibility at the tip in order to improve the adhesion with the protective sheet.

  The suction pad 30 further includes a perforation protrusion 39. The protrusion 39 extends from the recessed inner surface 38 toward the opening end surface 371. The protrusion 39 has a sharp tip portion 391, and the base end portion is fixed to the base portion 35. This fixing can be performed by bonding, fusing, screwing, or the like. For bonding, for example, a cyanoacrylate instantaneous adhesive, an epoxy adhesive, a two-component mixed acrylic adhesive, or the like can be used. Alternatively, the protrusion 39 may be insert-molded when the base body 351 and the skirt portion 37 are molded. The protrusion 39 is preferably made of a metal having high hardness such as a cemented carbide so as to maintain good machinability of the protective sheet perforation.

  The protrusion 39 has an irregular cross-sectional shape that prevents the peripheral edge portion of the hole formed in the protective sheet from sticking to the entire peripheral surface of the protrusion, and in this embodiment, as shown in FIGS. 6 (1a) and (1b). It has a triangular pyramid shape. Alternatively, other polygonal pyramids such as a quadrangular pyramid shown in FIGS. 6 (2a) and (2b) may be used. In the case of a polygonal pyramid shape, as shown in these drawings, the weight surface 392 is preferably concave from the plane connecting adjacent ridge lines. Thereby, the ventilation part mentioned later becomes easy to be formed and the suction power through a protection sheet acts more effectively by a glass plate.

  In the illustrated embodiment, for example, the skirt portion 37 can have an outer diameter of 50 to 150 mm and a height of 5 to 20 mm. In this case, the protrusion 39 has a height of 5 to 10 mm and a proximal end portion. The diameter can be 2 to 5 mm.

  The projection 39 may be conical as shown in FIGS. 6 (3a) and (3b), and a groove 393 for forming a ventilation portion may be provided in a part of the circular cross section. In a simple conical protrusion, the peripheral edge portion of the hole of the protective sheet tends to adhere to the entire peripheral surface of the protrusion, and as a result, the negative pressure of the suction pad may not sufficiently reach the glass plate. On the other hand, the protrusion 39 provided with the groove 393 has a gap with the groove 393 even if the protective sheet is in close contact with the peripheral surface, so that the negative pressure reaches the glass plate with the gap as a ventilation portion. Will be.

  This transfer device is used as follows. First, the moving means 1 is brought to a predetermined pickup position along the rail 10. FIG. 1 shows a state in which a glass plate that has been leaned diagonally at the pickup position is adsorbed. By operating the moving means 1, the suction pad 30 is applied to the protective sheet B covering the glass plate P. Then, a negative pressure is applied to the suction pad 30 through a suction hose 33 and a support plate 31 from a vacuum source not shown. Thereby, as shown in FIG. 4, the protective sheet B is sucked toward the recessed inner surface 38 side of the suction pad 30. Then, the perforation b <b> 0 is formed in the protective sheet B by being sucked beyond the tip 391 of the protrusion 39. Further, the triangular perforation b0 by the protrusion 39 generates a ventilation part b1 by a cut extending in a radial direction from each vertex (ridge line of the polygonal pyramid). Particularly, since the protective sheet B is sucked and spread while being sandwiched between the skirt portion 37 and the glass plate P, the ventilation portion (cut) b1 is formed to extend long. The ventilation part b1 is formed through the front and back surfaces of the protective sheet B. As a result, the suction force effectively acts on the glass plate. However, if the protrusion 39 is a polygonal pyramid having a pentagonal pyramid or more, the peripheral portion of the perforation b0 is easily adhered to the entire peripheral surface of the protrusion, and the ventilation portion b1 is difficult to be formed. Air flow may not be obtained.

  When suction is performed in this manner, the negative pressure from the vacuum source acts on the glass plate P through the perforations b0 and the ventilation portion b1, and the glass plate P is adsorbed by the suction pad 30. In this state, if the suction device 3 is moved to a predetermined position by the moving means 1 and the negative pressure from the vacuum source is released after the movement, the glass plate P can be installed at the predetermined position together with the protective sheet B. This installation may be any of single or stacked, horizontal, vertical or diagonal. Since the suction force of the suction pad reaches the glass plate through the perforations b0 and the like even if there are some wrinkles in the protective sheet, reliable suction is possible. Thus, as a result of the suction force of the suction pad reliably reaching the glass plate, accidents such as dropping of the glass plate during transfer can be prevented.

  7 and 8 show another embodiment of the transfer device of the present invention. The suction pad 30 in this transfer device includes a stopper 36 extending from the recessed inner surface 38 toward the opening end surface 371. As shown in FIG. 8, the stopper 36 has a columnar shape and is provided at four locations on the base portion 35, and each extends beyond the tip portion 391 of the protrusion 39 to a position before the opening end surface 371.

  If the suction pad 30 is used, even when the protective sheet B is sucked, even if the skirt portion 37 is bent and the glass plate P approaches the protrusion 39, the glass plate P will not exceed the stopper 36 when it comes into contact with the stopper 36. Since the movement toward the protrusion 39 is restricted, the glass plate P is prevented from being damaged due to contact with the protrusion 39.

  As shown in the figure, the stoppers 36 may be arranged in a distributed manner or in a continuous or intermittent ring shape such as a circular shape or a polygonal shape. Further, the protrusion 39 may be provided outside the inside of the arrangement area of the stopper 36. In this embodiment, the protrusion 39 is bonded to the wall surface of the through hole 351 a in the base portion 35.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, A various change is possible unless it deviates from the meaning. For example, the piercing projections 39 can be provided at various locations on the concave inner surface 38 as illustrated in FIG. 9A is the position of the skirt portion 37, FIG. 9B is the position of the base portion 35, FIG. 9C is the position of the adapter 352 in the base portion 35, and FIG. The state where the projections 39 are provided at the positions of the adapters 352 is shown. Since the adapter 352 is usually made of metal, the protrusion 39 can be brazed. Further, the adapter 352 and the protrusion 39 may be integrally machined.

  A plurality of protrusions can be provided. 10 shows an example in which two protrusions 39 are provided. FIG. 10A shows the position of the skirt portion 37 and the base portion 35, FIG. 10B shows the position of the base portion 35, and FIG. ) Shows a state in which a projection 39 is provided at each position of the skirt portion 37. Thus, by providing the some protrusion 39, more airflow can be obtained through the perforation formed in a protection sheet, and the speed of operation can be aimed at.

  In the said embodiment, although the example which adsorb | sucks one glass plate using many suction pads was shown, depending on the dimension of a glass plate, one glass plate or two to several suction pads Can also be adsorbed. Moreover, in the said embodiment, although the glass plate P was made into the transfer object, transfer objects are plate-shaped members, such as a laminated board comprised by laminating | stacking a resin plate, a glass layer, and a resin layer, a metal plate, etc. It may be.

1: Moving means 3: Suction device 30: Suction pad 35: Base portion 36: Stopper 37: Skirt portion 38: Recessed inner surface 39: Protrusion 371: Open end surface B: Protective sheet P: Glass plate b0: Perforation b1: Cut

Claims (9)

A plate-like member transfer device for transferring the plate-like member in a state where the plate-like member is sucked and held by a negative pressure acting via a suction pad,
The suction pad has a protrusion on its inner surface, and when the protective sheet stacked on the surface of the plate-like member is sucked by negative pressure, the protrusion penetrates the protective sheet and is formed by the protrusion of the protective sheet. A plate-shaped member transfer device, characterized in that a ventilation portion is formed around the penetrating portion, and the plate-like member is adsorbed and held together with the protective sheet by a negative pressure acting on the plate-like member through the ventilation portion. .   The plate-like member transfer device according to claim 1, wherein the protrusion has a cutting edge extending along a protruding direction on a surface thereof.   The plate-like member transfer device according to claim 2, wherein the projection has a polygonal pyramid shape, and the polygonal ridge line forms the cutting blade.   The suction pad includes a base part connected to a vacuum source and a skirt part extending from the base part to form an opening end surface, and the protrusion is provided on the base part. The plate-shaped member transfer device according to any one of claims 1 to 3.   The suction pad includes a base portion connected to a vacuum source, and a skirt portion extending from the base portion in a bowl shape to form an opening end surface, and the protrusion is in the vicinity of a boundary between the base portion and the skirt portion The plate-shaped member transfer device according to claim 1, wherein the plate-shaped member transfer device is provided.   2. The suction pad includes a stopper extending from an inner surface thereof toward an opening end surface, and the stopper extends beyond a tip portion of the protrusion to a position before the opening end surface. The transfer apparatus of the plate-shaped member of any one of -5.   The plate-like member transfer device according to claim 1, wherein the protrusion is made of metal. A suction pad leading to a vacuum source that generates negative pressure,
A suction pad having a protrusion on the inner surface of the pad, and the protrusion having a cutting edge extending along the protruding direction on the surface thereof.   The suction pad according to claim 8, wherein the protrusion has a polygonal pyramid shape, and the polygonal ridge line forms the cutting blade.

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