JP2019114646A - Work device - Google Patents

Abstract

To provide a work device capable of preventing occurrence of significant heat deformation in the panel part of the window of a cover member, even when exposed to environment of large temperature variation.SOLUTION: A window part 22W of a cover member 12 covering the base 11 and forming a work space 11S includes a metal frame part 31 forming a window frame part 31W, a transparent resin panel part 32 having peripheral part in contact with the window frame part 31W formed by the frame part 31, and multiple fasteners 33 for fastening the frame part 31 and the panel part 32. The multiple fasteners 33 consist, respectively, of a bolt 33B and a nut 33N for clamping the frame part 31 and the panel part 32, in a state inserted into the frame part 31 and the panel part 32, and fastening. At least one of the multiple fasteners 33 is configured to clamp an elastic member 36, placed between the bolt 33B and the nut 33N, together with the frame part 31 and the panel part 32.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a work device in which a work unit performs a predetermined work in a work space formed by covering a base with a cover member.

  As a working device in which a working unit performs a predetermined work in a working space formed by covering a base with a cover member, for example, a component mounting apparatus for mounting components by a mounting head on a substrate positioned in the working space Are known. A window part is provided in the cover member of such a working device, and the operator can visually recognize the working space through the window part, and can visually confirm the working condition and the like by the working part (for example, the following patent) Reference 1). The window portion is configured such that the peripheral portion of the transparent resin panel portion is fastened to the window frame portion formed by the metal frame portion by a plurality of fasteners. The fastener is usually composed of a bolt and a nut which sandwiches and clamps the frame portion and the panel portion in a state of being inserted into the frame portion and the panel portion.

JP 2012-227483 A

  However, as described above, in the configuration in which the window portion and the panel portion are fastened to the window portion, the working device is exposed to a large temperature change environment, and the thermal expansion coefficient is relatively large with respect to the metal frame portion. If the resin panel part expands and contracts more, the panel part whose peripheral part is restrained by the frame may be thermally deformed, and if it is bad, the product qualification may be lost. There was a problem.

  Therefore, an object of the present invention is to provide a working device capable of preventing the occurrence of large thermal deformation in the panel portion of the window portion of the cover member even when exposed to an environment with a large temperature change.

  The work apparatus according to the present invention is a work apparatus including a base, a cover member covering the base to form a work space, and a work unit performing a predetermined work in the work space, the cover member Has a window portion, the window portion is a metal frame portion forming the window frame portion, and a transparent resin panel portion whose peripheral portion is in contact with the window frame portion formed by the frame portion And a plurality of fasteners for fastening the frame portion and the panel portion, wherein the plurality of fasteners are respectively inserted into the frame portion and the panel portion and the frame portion and the panel portion. And at least one of the plurality of fasteners sandwich an elastic member disposed between the bolt and the nut together with the frame portion and the panel portion.

  According to the present invention, even when exposed to a large temperature change environment, it is possible to prevent the occurrence of large thermal deformation in the panel portion of the window portion of the cover member.

A perspective view of a working device in an embodiment of the present invention A perspective view of a working device in an embodiment of the present invention A perspective view of a working device in an embodiment of the present invention The perspective view of the opening-and-closing cover part of the cover member with which the operation device in the 1 embodiment of the present invention is provided An exploded perspective view of a closed cover portion provided in a working device according to an embodiment of the present invention Sectional drawing of the fastening location by the fastener of the opening-closing cover part with which the working device in one embodiment of the present invention is provided The disassembled perspective view of the fastening location by the fastener of the opening-closing cover part with which the working device in one embodiment of the present invention is provided An exploded sectional view of a fastening portion by a fastener of an opening and closing cover portion provided in a working device according to an embodiment of the present invention (A) (b) Cross-sectional view of part of the opening / closing cover portion provided in the working device according to one embodiment of the present invention Sectional drawing of the fastening location by the fastener of the opening-closing cover part with which the working device in the modification of one embodiment of the present invention is provided

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a work apparatus 1 according to an embodiment of the present invention. The work apparatus 1 is a component mounting apparatus that manufactures a component mounting board by mounting a component PT on a substrate KB as a work carried in from the outside, and includes a base 11, a cover member 12, a transport conveyor 13, and parts The feeder 14, the head moving mechanism 15 and the mounting head 16 are provided. Here, for convenience of description, the left-right direction of the base 11 viewed from the operator OP is taken as an X-axis direction, and the front-back direction of the base 11 viewed from the operator OP is taken as a Y-axis direction. Also, the vertical direction is taken as the Z-axis direction.

  In FIG. 1 and FIG. 2, the base 11 is covered by a cover member 12. A space above the base 11 covered by the cover member 12 is a working space 11S of the working device 1. The transfer conveyor 13 is provided on the base 11 and extends in the X-axis direction from the work space 11S. The transport conveyor 13 carries the substrate KB from the outside and positions it at a predetermined work position in the work space 11S.

  In FIG. 1 and FIG. 2, the parts feeder 14 is attached to a carriage 14 D connected to the base 11. A plurality of part feeders 14 can be attached to the carriage 14D, and by connecting or separating the carriage 14D to the base 11, the plurality of parts feeders 14 can be collectively attached to the base 11 or removed from the base 11. be able to. The parts feeder 14 mounted on the base 11 supplies the parts PT to the work space 11S.

  In FIG. 2, the head moving mechanism 15 includes a Y-axis beam 15a, a Y-axis beam 15a, and a moving plate 15c. The Y-axis beam 15a is provided on the base 11 and extends in the Y-axis direction. The X-axis beam 15b extends in the X-axis direction, and one end thereof is supported by the Y-axis beam 15a. The X-axis beam 15b is movable (that is, moved in the Y-axis direction) along the Y-axis beam 15a. The moving plate 15c is attached to the X-axis beam 15b, and is movable (that is, moved in the X-axis direction) along the X-axis beam 15b.

  In FIG. 2, the mounting head 16 is attached to the moving plate 15 c of the head moving mechanism 15. The mounting head 16 moves the work space 11S by moving the X-axis beam 15b in the Y-axis direction with respect to the Y-axis beam 15a of the head moving mechanism 15 and moving the moving plate 15c in the X-axis direction with respect to the X-axis beam 15b. Moving. The mounting head 16 includes a plurality of nozzles 16N extending downward. A vacuum suction force can be generated at the lower end of each nozzle 16N.

  The mounting head 16 repeatedly executes a pickup operation of suctioning the component PT supplied by the parts feeder 14 by the nozzle 16N and a component mounting operation of mounting the suctioned component PT on the substrate KB positioned at the work position. As described above, in the present embodiment, the mounting head 16 is a working unit that performs a predetermined operation (component mounting operation) on the substrate KB as a workpiece in the work space 11S. After the component mounting operation on the substrate KB by the mounting head 16 is completed, the transport conveyor 13 carries the substrate KB out of the work apparatus 1.

  In the working apparatus 1 having such a configuration, the cover member 12 that covers the base 11 to form the working space 11S is provided on the front and back of the base 11 in addition to the main body 21 that covers the entire base 11. It has an open / close cover 22 (FIGS. 1 and 3). As shown in FIG. 4, each opening / closing cover 22 has a window 22 W, and the upper edge thereof is pivotally connected to the main body 21 via a hinge 21 H.

  The operator OP can visually recognize the work space 11S through the window 22W, and can visually confirm the component mounting operation by the mounting head 16. Further, the operator OP can open and close the open / close cover 22 in the vertical direction with the hinge 21H as a fulcrum in a state where the operation of the mounting head 16 is stopped (FIG. 3). You can access to

  Each window part 22W with which each opening-and-closing cover part 22 is provided is comprised including the flame | frame part 31, the some panel part 32, and the some fastener 33, as shown to FIG.4 and FIG.5. The frame portion 31 is formed by connecting a plurality of hollow beam members 31B made of metal, and forms three rectangular window frame portions 31W. Each panel portion 32 is made of a transparent plate-like member made of resin (for example, acrylic resin), and the four sides of the peripheral portion are in contact with the outer surface side of each window frame portion 31W formed by the frame portion 31. The plurality of fasteners 33 fasten the frame portion 31 and the panel portion 32 at discrete positions along the four sides of each window frame portion 31W. In the present embodiment, one opening / closing cover 22 is configured to include three windows 22W (FIG. 4), but this is an example, and the number of windows 22W provided in the opening / closing cover 22 Is not particularly limited.

  In FIGS. 4 and 5, on the outer surface side of each side of the peripheral portion of the panel portion 32, a pressing plate 34 made of a plate-like member is installed. The pressing plate 34 functions to protect the outer surface side of the peripheral portion of the panel member, and further, a plurality of nuts 33 N arranged side by side on each side of the peripheral portion of the panel portion 32 to which the pressing plate 34 is attached It works to connect.

  Each of the plurality of nuts 33 </ b> N mutually connected by the holding plate 34 is attached to the holding plate 34 by stud welding. That is, in the present embodiment, each of the plurality of studs stud-welded to the pressing plate 34 is a part of the fastener 33 (nut 33 N).

  Each fastener 33 formed of the bolt 33B and the nut 33N clamps and couples the beam member 31B and the panel portion 32 in a state where the fastener 33 is inserted through both the beam member 31B and the panel portion 32. Here, as shown in FIG. 6 (a sectional view taken along the line VV in FIG. 4), the pressing plate 34 mounts each nut 33N on the panel portion 32 from the outer surface side (the upper side in FIG. 6). The formed through hole 32H (Figs. 7 and 8) and the insertion hole 31H (Figs. 7 and 8) provided penetrating the beam member 31B (Figs. 7 and 8) are inserted, and the end portion thereof is inside the beam member 31B. It is located in.

  The bolt 33B is inserted into the insertion hole 31H of the beam member 31B from the inner surface side of the frame portion 31 (the side opposite to the side on which the panel portion 32 of the beam member 31B is provided. In FIG. Is screwed into the nut 33N. A washer 35 and an elastic member 36 formed in a disk shape are disposed on the inner surface side of the beam member 31B, and a hollow cylindrical spacer 37 is disposed inside the beam member 31B. The bolt 33B is inserted into the washer 35, the elastic member 36 and the spacer 37 and screwed into the nut 33N. The bolt 33B and the nut 33N correspond to the beam member 31B and the panel portion 32 as the washer 35, the elastic member 36 and the spacer It is in the state of being inserted with 37 (Fig. 6).

  The elastic member 36 is a member made of an elastic material formed in a disk shape having a certain thickness. Here, the elastic member 36 is made of a rubber material, but may be made of a thermoplastic elastomer or the like. The spacer 37 has one end side (upper end side in FIG. 6) in contact with the end face of the nut 33N located inside the beam member 31B, and the other end side (lower end side in FIG. 6) outside the beam member 31B (bolt It is made to project to the side where 33B is inserted. The projecting amount of the spacer 37 to the outside of the beam member 31 B is substantially the same as the thickness of the elastic member 36 or slightly smaller than the thickness of the elastic member 36.

  As described above, since the bolt 33B and the nut 33N sandwich the beam member 31B and the panel portion 32 together with the elastic member 36, the pressing force between the beam member 31B and the panel portion 32 is an elastic member. It is moderately relaxed according to the elastic deformation of 36, and relative movement (slip) of the panel portion 32 with respect to the frame portion 31 is permitted (FIG. 9A → FIG. 9B, shown in FIG. 9B). Arrow M). Specifically, when the panel portion 32 tries to move relative to the frame portion 31 in the in-plane direction, the elastic member 36 is in its thickness direction (the tightening direction of the beam member 31B and the panel portion 32 by the fastener 33 And elastically deform so as to contract, and allow relative movement (slip) of the panel portion 32 with respect to the frame portion 31.

  Therefore, for example, even when the working device 1 is exposed to an environment with a large temperature change and the panel portion 32 made of resin expands and contracts more than the frame portion 31 made of metal, the panel portion 32 is It can move relative to the frame portion 31 within the range of the gap SP (so-called rattling) between the through hole 32H and the fastener 33 (here, the nut 33N) inserted in the through hole 32H. For this reason, in the working device 1 of the present embodiment, it is possible to prevent the occurrence of large thermal deformation in the panel portion 32 constituting the window portion 22W of the cover member 12.

  The bolt 33B presses the washer 35 and the elastic member 36 against the beam member 31B from the outside in a state of being screwed into the nut 33N, but the elastic member 36 is hardly compressed by the screwing of the bolt 33B. This is because the amount of screwing of the bolt 33B to the nut 33N is defined by the height of the spacer 37, and excessive twisting of the bolt 33B to the nut 33N is regulated by the spacer 37 and to the beam member 31B of the spacer 37. As described above, the amount of outward projection of is substantially the same as or slightly smaller than the thickness of the elastic member 36.

  As described above, in the present embodiment, the excessive twisting of the bolt 33B with respect to the nut 33N is restricted by the spacer 37, so that the frame portion 31 and the panel portion 32 are fastened by the fastener 33. Also, the elastic member 36 has a sufficient shrinkage allowance. For this reason, the elastic member 36 can fully exhibit the original function of contracting in the tightening direction of the frame portion 31 and the panel portion 32 and allowing the panel portion 32 to slide relative to the frame portion 31.

  As described above, in the work apparatus 1 according to the present embodiment, the fastener 33 for fastening the metal frame portion 31 of the window portion 22W and the resin panel portion 32 includes the elastic member 36 and the frame portion 31. Since the panel portion 32 and the bolt 33B and the nut 33N are held together with the panel portion 32, when the panel portion 32 tries to move relative to the frame portion 31, the elastic member 36 is made of the frame portion 31 and the panel portion 32. It shrinks in the tightening direction to allow the panel 32 to slide relative to the frame 31. Therefore, the panel unit 32 can move relative to the frame unit 31, and the panel unit constituting the window 22W of the cover member 12 even when the working device 1 is exposed to a large temperature change environment It is possible to prevent the occurrence of large thermal deformation at 32.

  Although the embodiments of the present invention have been described above, the present invention is not limited to those described above, and various modifications are possible. For example, in the above embodiment, the elastic member 36 is provided at a position to be pressed against the outer surface of the beam member 31B, but if it is disposed between the bolt 33B and the nut 33N, the installation position is particularly It is not limited. Further, in the above-described embodiment, the spacer 37 functions to restrict excessive screwing of the bolt 33B to the nut 33N, but as shown in the modification of FIG. 10, the height of the nut 33N is increased. The spacer 37 can be omitted by making the amount of projection from the beam member 31B substantially the same as the amount of projection of the spacer 37 in the above-described embodiment after penetrating the beam member 31B.

  Further, in the above-described embodiment, the plurality of nuts 33N aligned along each side of the peripheral portion of the panel portion 32 is attached to the pressing plate 34 and connected to each other. Alternatively, the nut 33N may be screwed to the bolt 33B independently of each other. Moreover, in the above-mentioned embodiment, although the elastic member 36 was formed in disk shape, the shape of the elastic member 36 is completely arbitrary. The present invention is not limited to the work device 1 provided in the opening / closing cover 22 where the window 22W is opened and closed with respect to the main body 21 as described in the above embodiment, and the window 22W is The present invention can also be applied to a working device provided in the main body 21 itself.

  Provided is a working device capable of preventing large thermal deformation from occurring in a panel portion of a window portion of a cover member even when exposed to a large temperature change environment.

DESCRIPTION OF SYMBOLS 1 work apparatus 11 base 11S work space 12 cover member 16 mounting head 21 main-body part 22 opening-and-closing cover part 22W window part 31 frame part 31W window frame part 32 panel part 33 fastener 33B bolt 33N nut 34 pressing plate (plate-like member)
36 elastic member 37 spacer

Claims (7)

A work apparatus comprising: a base; a cover member covering the base to form a work space; and a work unit performing a predetermined work in the work space,
The cover member has a window portion,
The window is
A metal frame part that forms the window frame part,
A transparent resin panel portion whose peripheral portion is in contact with the window frame portion formed by the frame portion;
A plurality of fasteners for fastening the frame portion and the panel portion;
Each of the plurality of fasteners includes a bolt and a nut for sandwiching and clamping the frame portion and the panel portion in a state of being inserted into the frame portion and the panel portion,
At least one of the plurality of fasteners sandwiches an elastic member disposed between the bolt and the nut together with the frame portion and the panel portion.   The working device according to claim 1, wherein the elastic member is made of a rubber material.   The work apparatus according to claim 1, further comprising: a plate-like member provided along a peripheral portion of the panel portion, wherein the plurality of nuts are attached to the plate-like member.   The work apparatus according to any one of claims 1 to 3, further comprising a spacer that restricts excessive twisting of the bolt to the nut.   The work apparatus according to claim 4, wherein the frame portion is formed by connecting a plurality of hollow beam members, and the spacer is provided inside the beam member.   The said cover member is provided with the main-body part which covers the whole of the said base, and the opening-and-closing cover part opened and closed with respect to the said main-body part, The said window part is equipped with the said opening-and-closing cover part. Work equipment described in.   The work apparatus according to any one of claims 1 to 6, wherein the work unit is a mounting head for mounting a component on a substrate positioned in the work space.

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