JP2006168880A - Sliding fork device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a convenient sliding fork device capable of restricting scattering of dust. <P>SOLUTION: In this fork device, a base side engaging member 23 is provided in an intermediate structure A in the condition wherein engagement working range thereof is formed smaller than length of a base side guide rail 22a provided in a base side member 15, and a tip side engaging member 24 is provided in the intermediate structure A in the condition wherein engagement working range thereof is formed smaller than length of a tip side guide rail 22b provided in a tip side member 19, and an appearance/disappearance driving means is provided to slide the intermediate structure A in relation to the base side member 15 and to slide the tip side member 19 in relation to the intermediate structure A in a mode of maintaining engagement of the base side engaging member 23 with the base side guide rail 22a over the whole of the engagement working range and engagement of the tip side engaging member 24 with the tip side guide rail 22b over the whole of the engagement working range. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a slide-type fork device configured such that a front end side member for supporting an article is moved out and with respect to a base side member.

Such a slide-type fork device is a device for supporting an article on a front end side member for supporting the article and moving the front end side member so that the article is transferred, and a stacker crane in an automatic warehouse, a self-propelled carriage, It is provided in a transfer device provided on a fixed base and used when transferring an article.
In such a sliding fork device, conventionally, a guide rail is provided on each of the base side member and the tip side member, and is slidably engaged with the guide rail on the base side provided on the base side member. An intermediate component having a distal side engaging member that is slidably engaged with a guide rail on the distal side provided to the base side engaging member and the distal side member is provided, and the base side engaging member is The engagement action range is provided in a state where it is formed to be approximately the same length as the length of the guide rail on the base side, and the front end side engagement member has a length substantially the same as the length of the guide rail on the front end side. (See, for example, Patent Document 1).
Such a slide-type fork device moves the intermediate component relative to the base side member so as to be positioned at an intermediate position in the movable range along the longitudinal direction of the guide rail on the base side, and moves the front end side member to the front end. Retracted state in which the intermediate component is moved so that the intermediate component is positioned at an intermediate position of the movable range along the longitudinal direction of the guide rail on the side, the movable range of the intermediate component relative to the base side member One side projecting state in which the distal end side member is moved to one end side of the movable range with respect to the intermediate component part, and the intermediate component part is movable with respect to the base side member. The intermediate component is slid with respect to the base member in order to switch to the other side protruding state in which the tip member is moved to the other end of the movable range with respect to the intermediate component. Operate and medium A retracting drive means for sliding the tip side member with respect to the component is provided, and the tip side member protrudes to one side of the sliding movement direction with respect to the base side member in one side protruding state or the other side. What is constituted so that it can change to the other side projecting state made to project, and can be transferred to the article transfer object place provided in the both sides of the slide movement direction can be transferred. is there.

Japanese Utility Model Publication No.2-2307

However, as in the conventional configuration, the base side engaging member is provided in a state in which the engaging action range is formed to be approximately the same length as the length of the guide rail on the base side. In a state where the base side engaging member is slid with respect to the guide rail on the side and switched to the one side protruding state or the other side protruding state, the sliding side of the engaging action range of the base side engaging member is changed. In the range, the engagement with the guide rail on the base side is disengaged, and the front end side engagement member is provided in a state in which the engagement action range is formed to be substantially the same length as the length of the guide rail on the front end side. Therefore, in the state of switching from the retracted state to the one side protruding state or the other side protruding state in which the guide rail on the tip side is slid with respect to the tip side engaging member, the engagement operation of the tip side engaging member is performed. Slide in the working range In the range of the side opposite to the one in which deviates the engagement between the distal end side of the guide rail.
Thus, when the retracted state is switched to the one side protruding state or the other side protruding state, the entire engagement range of the base side engaging member is engaged with the guide rail on the base side and the tip. Since it is not possible to maintain the entire range of the engagement action range of the side engagement member to be engaged with the guide rail on the distal end side, when switching from the retracted state to the one side protruding state or the other side protruding state, Dust generated by the engagement between the base side engaging member and the base side guide rail and the engagement between the front end side engaging member and the front end side guide rail is pushed outward when the engagement is released. It is difficult to dispose in the clean room because it easily scatters to the surroundings, and when switching from the one side protruding state or the other side protruding state to the retracted state, an attempt is made to engage the base side engaging member or the tip side engaging member. The guide rail on the base side and the guide rail on the tip side There is a possibility that can not be smoothly switched to retired state and Wataru.

Therefore, the base side engaging member is provided in a state in which its engaging action range is made smaller than the length of the base side guide rail, and the front end side engaging member is arranged so that its engaging action range is the length of the front side guide rail. The entire engagement range of the base side engagement member is engaged with the guide rail on the base side and the full range of the engagement range of the distal side engagement member is set to the distal side. The intermediate component is moved with respect to the base side member so as to be positioned on the other end side of the moving range along the longitudinal direction of the guide rail on the base side in the form of maintaining the engagement with the guide rail of the base side, and the tip side The retracted state in which the member is moved with respect to the intermediate component so as to be positioned on the other end side of the moving range along the longitudinal direction of the guide rail on the tip side, and the intermediate component in the longitudinal direction of the guide rail on the base side Located on one end of the moving range along In a laterally projecting state in which the distal side member is moved relative to the intermediate component so as to be positioned at one end of the moving range along the longitudinal direction of the distal side guide rail. A configuration is conceivable in which an intermediate drive portion is slid with respect to the base side member to be switched, and an exit / retreat drive means for sliding the tip side member with respect to the intermediate portion is provided.
However, in such a configuration, it is not possible to switch to the other side protruding state, and it is not possible to slide the tip side member toward the article transfer target portion provided on the other side in the slide moving direction. In order to transfer the article to and from the article transfer target portion provided on the other side, if the swiveling device that turns the base side member around the vertical axis is provided, the base side member is turned. Therefore, a large space is required around the slide-type fork device, which is inconvenient.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a slide-type fork device that is difficult to disperse dust and is easy to use.

In order to achieve this object, the first characteristic configuration of the slide-type fork device according to the present invention is a slide-type configuration in which the front end side member for supporting the article is moved out and with respect to the base side member. In the fork device,
A guide rail is provided on each of the base side member and the tip side member, and a base side engaging member and a tip side member are slidably engaged with a base side guide rail provided on the base side member. An intermediate component having a distal-side engaging member that is slidably engaged with the provided distal-side guide rail is provided, and the base-side engaging member has its engaging action range guided by the base-side guide. Provided in a state of being formed to be smaller than the length of the rail, and wherein the distal end side engaging member is provided in a state of having its engaging action range formed to be smaller than the length of the guide rail on the distal end side, and the base side engagement Maintaining engagement of the entire engagement range of the member with the guide rail on the base side and engagement of the entire range of engagement operation of the distal end engagement member with the guide rail on the distal end side Shape Then, the intermediate component is moved with respect to the base side member so as to be positioned at an intermediate position of a movable range along the longitudinal direction of the guide rail on the base side, and the tip side member is moved to the guide rail on the tip side A retreated state in which the intermediate component is moved so that the intermediate component is positioned at an intermediate position of the movable range along the longitudinal direction of the intermediate component, the movable range of the intermediate component relative to the base side member One side projecting state in which the distal end side member is moved to one end side of the movable range with respect to the intermediate configuration portion, and the intermediate configuration portion is moved with respect to the base side member. The base side member is moved to the other end side of the movable range and the tip side member is switched to the other side protruding state in which the distal end member is moved to the other end side of the movable range with respect to the intermediate component. Against the above The components slide operation, and, the certain the front part relative to the intermediate component in that projecting and retracting driving means for sliding operation is provided.

That is, even if the base side engaging member is provided in a state in which the engaging action range is formed smaller than the length of the guide rail on the base side, and the intermediate component is slid relative to the base side member, Since it is possible to keep the entire range of the engagement action range of the base side engagement member engaged with the guide rail on the base side as much as the base side engagement member is formed small, the base side of the intermediate component part The movable range with respect to the member is a range in which the base side engaging member of the intermediate component moves from a state where the base side engaging member is located on one end side of the base side guide rail to a state where it is located on the other end side. Thus, the intermediate component is moved to one end of the movable range relative to the base side member, or the intermediate component is moved to the other end of the movable range relative to the base side member. The other side protruding state Even switching can be configured to maintain the engagement of the full range of engaging action for the range of the base-side engaging member at the base side of the guide rail.
Further, even if the distal end side engagement member is provided in a state in which the engagement action range is formed to be smaller than the length of the guide rail on the distal end side, and the distal end side member is slid relative to the intermediate component Since it is possible to maintain the entire engagement range of the front end side engagement member with the front end guide rail by the amount that the front end side engagement member is formed smaller, the intermediate configuration of the front end side member The movable range with respect to the portion is a range in which the distal end side engaging member of the intermediate component portion moves from a state where it is positioned on one end side of the guide rail on the distal end side of the distal end side member to a state where it is positioned on the other end side. The one side projecting state in which the tip side member is moved to one end side of the movable range with respect to the intermediate component part, or the tip side member is moved to the other end side of the movable range with respect to the intermediate component part Cut to the other side protruding state Even were example, it can be configured to maintain the engagement of the full range of engaging action for the range of the distal end side engaging member on the distal end side of the guide rail.

  Accordingly, the intermediate component is slid with respect to the base member, and the tip member is slid with respect to the intermediate member to switch to the retracted state, the one side protruding state, or the other side protruding state. Therefore, even if it is switched from the retracted state to the one side projecting state or the other side projecting state, the base side engaging member or the tip side engaging member can be used. Since it is possible to maintain the entire engagement range of the member engaged with the guide rail on the base side or the guide rail on the tip side, the protrusion from the retracted state to the one side protruding state or the other side protruding state When switching to a state, the dust generated by the engagement between the base side engaging member and the base side guide rail and the engagement between the front end side engaging member and the front end side guide rail is prevented from being scattered around. Can be washed It is easy to install in a high clean room, and even if it is switched to one side projecting state or the other side projecting state, the entire range of engagement action of the base side engaging member and the guide rail on the base side and the tip side engaging member Since the engagement between the entire range of the engagement action range and the guide rail on the front end side is maintained, switching from the one side protruding state or the other side protruding state to the retracted state can be performed smoothly.

  Therefore, the engagement action range of the base side engagement member is formed smaller than the length of the guide rail on the base side, the engagement action range of the tip side engagement member is formed smaller than the length of the guide rail on the tip side, In any state switched to the retracted state, the one-side protruding state, or the other-side protruding state, the entire range of the engaging action range of the base side engaging member is engaged with the guide rail on the base side and the tip side Since the entire engagement range of the engagement member is maintained to be engaged with the guide rail on the distal end side, it is difficult to scatter dust, and the one-side protruding state from the retracted state It can be configured to switch to both the other side protruding state, and thus it is possible to provide a sliding fork device that is difficult to disperse dust and is easy to use.

  A second characteristic configuration of the slide-type fork device according to the present invention is the first characteristic configuration, wherein the intermediate component includes the base-side engaging member and the first relay engaging member, A distal end side linking member provided with the distal end side engaging member and a second relay engaging member; a first guide rail engaged with the first relay engaging member; and the second relay engaging member. A relay link member having a second guide rail to be engaged is provided, and the first relay engagement member is provided in a state in which the engagement action range is formed to be smaller than the length of the first guide rail. And the second relay engaging member is provided in a state in which the engaging action range is formed to be smaller than the length of the second guide rail, and the retracting drive means is the first relay engaging member. The entire range of engagement action of the first guide rail In the retracted state, and the base-side linking member is moved in the retracted state in such a manner that the entire range of the engaging action range of the second relay engaging member is engaged with the second guide rail. The relay side member is moved relative to the base side member so as to be positioned at an intermediate position of the movable range along the longitudinal direction of the base side guide rail, and the relay linkage member is movable along the longitudinal direction of the first guide rail. The base-side linking member is moved relative to the base-side linking member so that the base-side linking member is positioned at an intermediate position, and the tip-side linking member is positioned at an intermediate position in the movable range along the longitudinal direction of the second guide rail. So that the relay link member is moved to the intermediate link position in the movable range along the longitudinal direction of the guide rail on the front end side. The base link member is moved to one end of the movable range with respect to the base side member in the one side projecting state, and the relay link member is moved to the base side. The distal end side linking member is moved toward one end side of the movable range with respect to the relay linking member, and the distal end side member is moved toward the distal end side. Move to one end side of the movable range with respect to the linkage member, and move the base side linkage member to the other end side of the movable range with respect to the base side member in the other side protruding state, Moving the relay linkage member to the other end side of the movable range with respect to the base side linkage member, moving the distal end side linkage member to the other end side of the movable range with respect to the relay linkage member; and The tip side In order to move the material to the other end side of the movable range with respect to the distal end side linking member, the base side linking member is slid with respect to the base side member, and the relay is performed with respect to the base side linking member. It is configured to slide the linkage member, slide the tip side linkage member relative to the relay linkage member, and slide the tip side member relative to the tip side linkage member. is there.

That is, the first relay engaging member is provided in a state in which the engaging action range is formed to be smaller than the length of the first guide rail, and the relay connecting member is slid relative to the base side connecting member. However, since it is possible to keep the entire engagement range of the first relay engaging member engaged with the first guide rail as much as the first relay engaging member is formed smaller, the relay The movable range of the linking member relative to the base side linking member is changed from the state where the base side engaging member of the base side linking member is located on one end side of the first guide rail of the relay linking member to the state located on the other end side. By setting the moving range, the relay link member is moved to one end of the movable range with respect to the base side link member, or the relay link member is moved with respect to the base side link member. Other possible range Even if it switches to the other side protrusion state moved to the side, it is comprised so that it may maintain engaging the full range of the engagement effect | action range of the engagement member for 1st relays with the 1st guide rail. it can.
Further, the second relay engaging member is provided in a state where the engaging action range is formed to be smaller than the length of the second guide rail, and the distal end side linking member is slid relative to the relay linking member. Even so, it is possible to keep the entire engagement range of the second relay engaging member engaged with the second guide rail as much as the second relay engaging member is formed small. The movable range of the side engaging member relative to the relay linking member is a state in which the second relay engaging member of the distal end side linking member is located on the other end side from the state on the one end side of the second guide rail of the relay linking member. By setting the range to move until the leading end side linking member is moved to one end side of the movable range with respect to the relay linking member, or the leading end side linking member to the relay linking member. Other range of movement Even if it switches to the other side protrusion state moved to the side, it can comprise so that the whole range of the engagement action range of the engagement member for 2nd relays may be engaged with the 2nd guide rail. it can.

Accordingly, the engagement action range of the first relay engagement member is formed smaller than the length of the first guide rail, and the engagement action range of the second relay engagement member is formed smaller than the length of the second guide rail. Thus, in any of the states switched to the retracted state, the one side protruding state, and the other side protruding state, the entire range of the engaging action range of the first relay engaging member is engaged with the first guide rail. And the second relay engaging member is configured to maintain the entire engagement range of engagement with the second guide rail, so that it is difficult to disperse dust and the one side from the retracted state. It can be configured to switch to both the state of the side protrusion and the state of the other side protrusion.
The intermediate component includes a base-side link member, a relay link member, and a tip-side link member. The base-side link member is slid with respect to the base-side member, and the base-side link member is relay-linked. The member to be slid is operated by sliding the member, the front end side linking member is slid by the relay linking member, and the front end side member is slid by the front side linking member. By providing four linkage members and front end side link members, that is, the front end side member, for example, the same fork is provided as compared with the case where one member for sliding the intermediate structure is provided and two members for slide operation are provided. In order to obtain reach, the length of each member in the sliding direction can be shortened, and the width of the sliding fork device in the sliding direction can be reduced.

  The third characteristic configuration of the sliding fork device according to the present invention is the same as or substantially the same length in the sliding direction of the base side member, the relay linking member, and the tip side member in the second characteristic configuration. The length of the base side linkage member and the tip side linkage member in the sliding direction is the same or substantially the same, and is smaller than the length of the relay linkage member.

  That is, the base side link member and the front end side link member are made lighter by forming the lengths of the base side link member and the front end side link member smaller than the lengths of the base side member, the relay link member and the front end side member. Therefore, the sliding fork device can be configured to be lightweight.

  According to a fourth characteristic configuration of the slide-type fork device according to the present invention, in any one of the second or third characteristic configuration, the retracting / retracting driving unit moves the base-side linking member to the base-side member. A slide driving means for performing a slide operation, a slide operation of the relay linking member by the movement of the base side linking member, a slide operation of the tip side linking member by a movement of the relay linking member, and a movement of the tip side linking member And a slide operation means for slidingly operating the distal end side member.

  That is, since all of the base side link member, the relay link member, the tip side link member and the tip side member can be slid by one slide drive unit, it is sufficient to provide only one slide drive unit. It can be simplified.

  According to a fifth characteristic configuration of the slide-type fork device according to the present invention, in the fourth characteristic configuration, the slide operation means has one end connected to the base side member and extended in the sliding movement direction, and the base side linkage. After being guided in the reverse direction by the reverse guide portion provided in the member, one end is connected to the base side cord-like body connected to the relay linking member and the base side linking member is extended in the slide movement direction. And after being guided in the reverse direction by the reverse guide provided in the relay linkage member, the relay cord connected to the distal end side linkage member and one end connected to the relay linkage member and slidingly moved. And a distal end-side cord connected to the distal end side member after being guided in the reverse direction by a reversing guide portion provided in the distal end side linking member. .

That is, when the base side linking member is slid in the slide movement direction by the slide driving means, the relay linking member is pulled by the base side cord-like body by the movement of the base side linking member in the slide movement direction. When the relay link member moves in the slide movement direction, the distal end side linkage member is pulled by the relay cord to move in the slide movement direction, and the distal end side link member slides. By the movement in the moving direction, the distal end side member is pulled by the distal end side cord-like body and moved in the sliding movement direction, and switched to the retracted state, the one side protruding state, or the other side protruding state.
And the slide operation means is composed of a base side cable-like body, a relay cable-like body, and a tip-side side cable-like body, and the switching to the retracted state, the one side protruding state, and the other side protruding state is performed. Since it is configured to be performed by a pulling operation, dust is less likely to be generated than that in which the slide operation means is composed of a rack and a pinion, and scattering of dust around the device can be suppressed.

  A sixth characteristic configuration of the slide-type fork device according to the present invention is the dust-proof cover body that covers the slide operation means on each of the base side linkage member and the tip side linkage member in the fourth or fifth feature configuration. Is provided in a state protruding in the sliding direction.

  That is, by covering the slide operation means with the dust-proof cover body, dust scattering from the slide operation means can be prevented, and in any of the retracted state, the one side protruding state, and the other side protruding state. By covering the slide operation means with the dustproof cover body, it is possible to further prevent dust from being scattered from the slide operation means.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a pair of storage shelves 1 that store articles W are disposed so as to face each other, and a stacker crane 2 is disposed along a traveling rail 3 between the pair of storage shelves 1 that face each other. The stacker crane 2 is provided so as to be able to run, and is configured to convey the article W between the storage shelf 1 and the cargo receiving device 4 provided on the entrance side of the storage shelf 1. The crane 2 and the cargo receiving device 4 constitute an automatic warehouse. As shown in FIGS. 1 and 2, the storage shelf 1 is formed with a plurality of article storage sections for storing articles W in the vertical direction and the horizontal width direction so as to store one article W in the depth direction. It is configured.

  The stacker crane 2 is configured such that a traveling carriage 5 traveling along a traveling rail 3 is provided with a pair of front and rear columns 6 that guide and support the lifting platform 9 so as to be movable up and down at the front and rear end portions in the traveling direction. 6 are connected to each other by an upper frame 8 guided and supported by an upper rail 7 installed above the work path. A slide-type fork device 14 is provided so that the front end side member 19 can be operated to move in and out in the slide movement direction. As shown in FIG. 2, the sliding fork device 14 has a one-side protruding state in which the tip-side member 19 is protruded from the retracted state to one side in the sliding movement direction with respect to the base-side member 15. The sliding fork device 14 can be switched to the retracted state, the one-side protruding state, the other-side protruding state, and the lifting / lowering of the lifting platform 9. Thus, the article W can be stored and taken out from both the pair of opposing storage shelves 1.

Next, the sliding fork device 14 will be described.
As shown in FIGS. 3 to 6, the slide-type fork device 14 is configured such that a front end side member 19 for supporting an article is withdrawn / retracted with respect to the base side member 15. Further, a guide rail 22 is provided on each of the distal end side members 19, and a base side engaging member 23 slidably engaged with a base side guide rail 22 a provided on the base side member 15 and the distal end side member 19 is provided with an intermediate component A having a distal end side engaging member 24 that is slidably engaged with a guide rail 22b on the distal end side provided in 19, and the base side engaging member 23 has an engagement operating range thereof. Is formed smaller than the length of the guide rail 22a on the base portion side, and the front end side engaging member 24 forms the engaging action range smaller than the length of the guide rail 22b on the front end side. It is provided in that state. The base-side guide rail 22a and the base-side engaging member 23 constitute a linear guide, and the tip-side guide rail 22b and the tip-side engaging member 24 constitute a linear guide. However, the base side member 15 and the distal end side member 19 are appropriately provided with ribs in order to increase the strength.

  The intermediate component A includes a base-side linking member 16 provided with the base-side engaging member 23 and a first relay engaging member 25, the tip-side engaging member 24, and a second relay engaging member 26. , A first guide rail 27 with which the first relay engagement member 25 is engaged, and a second guide rail 28 with which the second relay engagement member 26 is engaged. The first relay engaging member 25 is provided in a state in which the engaging action range is formed to be smaller than the length of the first guide rail 27, and the second relay engaging member 25 is provided. The engaging member 26 is provided in a state in which the engaging action range is formed smaller than the length of the second guide rail 28. The first guide rail 27 and the first relay engaging member 25 constitute a linear guide, the second guide rail 28 and the second relay engaging member 26 constitute a linear guide, and Although not shown, the base side linkage member 16, the relay linkage member 17, and the distal end side linkage member 18 are appropriately provided with ribs to increase the strength.

  Specifically, as shown in FIGS. 3 to 5, the base side guide rail 22 a having the same length as the length of the base side member 15 in the slide movement direction is provided on the upper surface of the base side member 15 in the slide movement direction. The two guide rails 22a on the base side are provided at intervals in the lateral width direction orthogonal to the sliding movement direction. A base-side engaging member 23 that engages with the base-side guide rail 22a is provided on the lower surface of the base-side linking member 16, and this base-side engaging member 23 is a single base-side guide rail. It is composed of a total of four guide members provided with a distance in the longitudinal direction with respect to 22a. Note that both lateral side portions of the base portion side member 15 are bent upward.

  Further, a first guide rail 27 having the same length as the length of the relay linkage member 17 in the slide movement direction is provided on the upper surface of the relay linkage member 17 along the slide movement direction. Two are provided at intervals in the width direction. Then, both lateral side portions of the base-side linking member 16 are bent upward in a U-shape, and the first lower surface of the bent portion is engaged with the first guide rail 27. A relay engaging member 25 is provided, and the first relay engaging member 25 is provided with a total of four guides provided with a distance in the longitudinal direction with respect to one first guide rail 27. It is comprised with the member.

  Further, the inner side portion in the lateral width direction is recessed downward from the location where the first guide rail 27 of the relay linking member 17 is provided, and the relay linking member 17 slides on the upper surface of the inner side portion. The second guide rail 28 having the same length as the length in the direction is provided along the slide movement direction, and the two second guide rails 28 are provided at intervals in the lateral width direction. A second relay engagement member 26 that engages with the second guide rail 28 is provided on the lower surface of the distal end side linking member 18, and the second relay engagement member 26 includes one second The guide rail 28 is composed of a total of four guide members provided at two intervals in the longitudinal direction.

  Further, a guide rail 22b on the distal end side having the same length as the sliding movement direction of the distal end side member 19 is formed on the upper surface of the support portion formed by bending the lower portion of the distal end side member 19 on both lateral sides. The two guide rails 22b on the front end side are provided at intervals in the lateral width direction. Then, both lateral side portions of the distal end side linking member 18 are bent upward in a U-shape, and a distal end engaging with the guide rail 22b on the distal end side is formed on the upper lower surface of the bent portion. A side engagement member 24 is provided, and the distal end side engagement member 24 is divided into a total of four guide members provided at a distance in the longitudinal direction with respect to one guide rail 22b on the distal end side. Configured.

  Further, the sliding fork device 14 has the entire engagement range of the base side engagement member 23 engaged with the guide rail 22a on the base side and the engagement operation of the tip side engagement member 24. The intermediate component A is positioned at an intermediate position of the movable range along the longitudinal direction of the guide rail 22a on the base side in a form that maintains the entire range of the working range engaged with the guide rail 22b on the distal end side. The distal side member 19 is moved relative to the base side member 15 and the intermediate component A is positioned at an intermediate position within a movable range along the longitudinal direction of the guide rail 22b on the distal side. Retracted state moved with respect to the intermediate component A, the intermediate component A is moved to one end of the movable range with respect to the base side member 15, and the tip side member 19 is moved to the intermediate configuration One side projecting state moved to one end side of the movable range with respect to A, and the intermediate component A is moved to the other end side of the movable range with respect to the base side member 15 and The intermediate component A is slid with respect to the base member 15 in order to switch to the other side protruding state in which the distal member 19 is moved to the other end of the movable range with respect to the intermediate component A. In addition, an exit / retreat driving means 31 for sliding the distal end side member 19 with respect to the intermediate component A is provided.

  Then, the exit / retreat drive means 31 engages the first guide rail 27 with the entire range of engagement of the first relay engaging member 25 and the second relay engaging member 26. Moving the base-side linking member 16 along the longitudinal direction of the base-side guide rail 22a in the retracted state in such a manner that the entire range of the engaging action range is maintained to be engaged with the second guide rail 28. The base link member 17 is moved relative to the base side member 15 so as to be positioned at an intermediate position of the possible range, and the relay link member 17 is moved to the intermediate position of the movable range along the longitudinal direction of the first guide rail 27. The distal end side linkage member 18 is moved to the intermediate position of the movable range along the longitudinal direction of the second guide rail 28. The relay link member 17 is moved relative to the relay link member 17, and the relay link member 17 is positioned at an intermediate position within a movable range along the longitudinal direction of the guide rail 22b on the tip end side. The base link member 16 is moved relative to the base side member 15 to one end side of the movable range in the one side projecting state, and the relay link member 17 is moved to the link member 17. The base side linking member 16 is moved to one end side of the movable range, the tip side linking member 18 is moved to one end side of the movable range with respect to the relay linking member 17, and the tip side The member 19 is moved to one end side of the movable range with respect to the distal end side linkage member 18, and the base side linkage member 16 is moved relative to the base side member 15 in the other side protruding state. The relay link member 17 is moved to the other end side of the movable range with respect to the base side link member 16, and the distal end side link member 18 is moved to the relay link member. In order to move the distal end side member 19 to the other end side of the movable range with respect to the distal end side link member 18, the base side member is moved to the other end side of the movable range with respect to 17 15, slides the base link member 16 with respect to the base link member 16, slides the relay link member 17 with respect to the base link member 16, and slides the tip link member 18 with respect to the relay link member 17. The distal end side member 19 is operated to slide with respect to the distal end side linking member 18.

As shown in FIGS. 7 and 8, the base side engaging member 23 is provided in a state in which the engaging action range is formed smaller than the length of the guide rail 22 a on the base side. Even if the base-side linking member 16 is slid, the base-side engagement member 23 has the entire engagement range of the base-side engagement member 23 as much as the base-side engagement member 23 is formed. It is comprised so that it can maintain engaging with the guide rail 22a.
That is, the engaging action range of the base side engaging member 23 is set to be smaller than the movable range of the base side linking member 16, and the base side linking member 16 is set to one end of the movable range with respect to the base side member 15. Even if it is switched to the one side protruding state that has been moved or the other side protruding state in which the base side linking member 16 is moved to the other side of the movable range with respect to the base side member 15, the base side engagement The entire range of the engaging action range of the member 23 is configured to be able to be kept engaged with the guide rail 22a on the base side.

In addition, since the first relay engaging member 25 is provided in a state in which the engaging action range is formed to be smaller than the length of the first guide rail 27, the relay connecting member 17 with respect to the base side connecting member 16. Even if the first relay engagement member 25 is slid, the entire range of the engagement range of the first relay engagement member 25 is reduced to the first guide rail 27 as much as the engagement range of the first relay engagement member 25 is reduced. It is comprised so that it can maintain engaging.
That is, the engaging action range of the first relay engaging member 25 is set to be smaller than the movable range of the relay linking member 17, and the relay linking member 17 is one end side of the movable range with respect to the base side linking member 16. Even if it is switched to the one side projecting state moved to the other side or the other side projecting state in which the relay linking member 17 is moved to the other end side of the movable range with respect to the base side linking member 16, the first relay The engagement range of the engagement member 25 is configured to be able to maintain the entire range of engagement with the first guide rail 27.

Further, since the second relay engaging member 26 is provided in a state in which the engaging action range is formed to be smaller than the length of the second guide rail 28, the distal end side connecting member 18 with respect to the relay connecting member 17. Even when the second relay engagement member 26 is slid, the entire range of the engagement action range of the second relay engagement member 26 is reduced to the second guide rail 28 by the amount that the engagement action range of the second relay engagement member 26 is reduced. It is comprised so that it can maintain engaging.
That is, the engaging action range of the second relay engaging member 26 is set to be smaller than the movable range of the distal end side linkage member 18, and the distal end side linkage member 18 is one end of the movable range with respect to the relay linkage member 17. Even if it is switched to the one side protruding state moved to the side or the other side protruding state in which the distal end side linking member 18 is moved to the other end side of the movable range with respect to the relay linking member 17, the second side The entire engaging range of the engaging member for relay 26 is configured to be engaged with the second guide rail 28.

In addition, since the front end side engagement member 24 is provided in a state in which the engagement action range is formed to be smaller than the length of the front end side guide rail 22b, the front end side member 19 is attached to the front end side link member 18. Even if it is slid, the entire engagement range of the distal end side engagement member 24 is engaged with the guide rail 22b on the distal end side by the amount that the engagement range of the distal end side engagement member 24 is made smaller. It is configured to be able to maintain.
That is, the engagement action range of the distal end side engagement member 24 is set smaller than the movable range of the distal end side member 19, and the distal end side member 19 is moved to one end side of the movable range with respect to the distal end side linking member 18. Even if it is switched to the one side projecting state, or the other end projecting state in which the tip side member 19 is moved to the other end side of the movable range with respect to the tip side linking member 18, the tip side engaging member It is configured to be able to maintain that the entire range of the engagement action range of 24 is engaged with the guide rail 22b on the distal end side.

As shown in FIG. 4, the base side member 15, the relay linkage member 17, and the distal end side member 19 are configured to have the same or substantially the same length in the slide movement direction, and the base side linkage member 16 and The length in the slide movement direction of the distal end side linking member 18 is the same or substantially the same, and is formed to be smaller than the length of the relay linking member 17 and less than half.
The pair of guide members of the base-side engaging member 23 provided on the base-side linking member 16 is provided so as to be distributed between one end and the other end in the sliding direction of the base-side linking member 16, and the tip-side linking member 18. The pair of guide members of the distal end side engaging member 24 provided on the distal end side of the distal end side linking member 18 are provided separately on one end and the other end in the sliding movement direction of the distal end side linking member 18.
The base-side linking member 16 does not protrude from one end of the base-side member 15 to one side in the sliding movement direction and is on the other side in the sliding movement direction from the other end of the relay linking member 17 in one side protruding state. And projecting from the other end of the base side member 15 to the other side in the slide movement direction and from one end of the relay linkage member 17 to one side in the slide movement direction. It is configured not to protrude. In addition, the distal end side linking member 18 does not project from one end of the relay linking member 17 to one side in the sliding movement direction and protrudes from the other end of the distal end side member 19 to the other side in the sliding movement direction in one side protruding state. In the state of not projecting and projecting to the other side, it does not project from the other end of the relay linking member 17 to the other side of the sliding movement direction, and does not project from one end of the distal end side member 19 to one side of the sliding movement direction. It is configured.

The exit / retreat drive means 31 slides the relay linkage member 17 by the slide drive means 32 that slides the base side linkage member 16 with respect to the base side member 15 and the movement of the base side linkage member 16. The front end side link member 18 is slid by the movement of the relay link member 17 and the front end side member 19 is slid by the movement of the front end link member 18. .
Then, the slide operating means 33 is connected to the base side member 15 at one end and extended in the slide movement direction, and in the reverse direction by the reverse sprocket 34 as the reverse guide portion provided in the base side linkage member 16. After being guided to the relay link member 17, the base side cord 35 is connected to the relay link member 17, and one end of the base side link member 16 is connected to the base link member 16 so as to extend in the sliding movement direction. After being guided in the reverse direction by the inverted reverse sprocket 34, one end is connected to the relay cord-like body 36 connected to the distal end side linkage member 18 and the relay linkage member 17 and extended in the sliding movement direction. And a tip-side cord-like body 37 connected to the tip-side member 19 after being guided in the reverse direction by the reverse sprocket 34 provided in the tip-side linking member 18. That.

  As shown in FIG. 6, the slide drive means 32 includes a drive sprocket 41 and a driven sprocket 42 that are rotationally driven by an electric motor (not shown) on the base side member 15, and a drive chain 43 is provided at the base. One end is connected to the side linking member 16 and extended to one side in the sliding movement direction, and the intermediate portion is wound around the drive sprocket 41 and the driven sprocket 42 and guided in the reverse direction, respectively, and then the other end Is connected to the base-side linking member 16.

The base-side cord-like body 35 is connected to the base-side member 15 and is extended to one side in the sliding movement direction, and is slid in the reverse direction by the reverse sprocket 34 provided in the base-side linking member 16. After being guided to the other side in the moving direction, one end is connected to the base side chain connected to the relay linking member 17 and the base side member 15 and extended to the other side in the sliding direction, and the base side linking member 16 is connected. After being guided to one side of the slide movement direction which is the reverse direction by the reverse sprocket 34 provided in the above, it is constituted by a pair of base side chains with a base side chain connected to the relay linkage member 17.
The relay cable 36 is connected to the base side linkage member 16 at one end and extended to one side in the slide movement direction, and is moved in the reverse direction by the reverse sprocket 34 provided in the relay linkage member 17. After being guided to the other side in the direction, one end is connected to the relay chain connected to the distal end side linkage member 18 and the base side linkage member 16 and is extended to the other side in the sliding movement direction. After being guided to one side in the slide movement direction which is the reverse direction by the reverse sprocket 34 provided, it is constituted by a pair of relay chains with a relay chain connected to the distal end side linking member 18.
Further, the distal end side rod-like body 37 is connected to the relay linking member 17 and extended to one side in the sliding movement direction, and is slid in the reverse direction by the reverse sprocket 34 provided in the distal end side linking member 18. After being guided to the other side in the moving direction, one end is connected to the tip side chain connected to the tip side member 19 and the relay linking member 17 and extended to the other side in the sliding direction, and the tip side linking member 18 is connected. After being guided to one side of the slide movement direction which is the reverse direction by the reverse sprocket 34 provided in the above, it is constituted by a pair of front end side chains with a front end side chain connected to the front end side member 19.

Therefore, the sliding type fork device 14 is switched from the retracted state to the one side protruding state by pulling the base side linking member 16 to one side in the sliding movement direction by the slide driving means 32 and moving it. By the movement of the base side linkage member 16 to one side in the slide movement direction, the relay linkage member 17 is pulled by the base side cord 35 and moved to one side in the slide movement direction, and the relay linkage member 17 is moved. As a result of the movement to one side in the slide movement direction, the distal end side linking member 18 is pulled by the relay cable 36 and moved to one side in the slide movement direction, and the distal end side linking member 18 moves in the slide movement direction. By moving to the one side, the distal end side member 19 is pulled by the distal end side cord-like body 37 and moved to one side in the sliding movement direction to be switched to the one side protruding state.
Further, the switching of the sliding fork device 14 from the retracted state to the other side protruding state is performed by pulling and moving the base side linkage member 16 to the other side in the sliding movement direction by the slide driving means 32. By the movement of the base side linkage member 16 to the other side in the slide movement direction, the relay linkage member 17 is pulled by the base side cord 35 and moved to the other side of the slide movement direction, and the relay linkage member 17 is moved. As a result of the movement to the other side of the sliding movement direction, the distal end side linking member 18 is pulled by the relay cable 36 and moved to the other side of the sliding movement direction, and the distal end side linking member 18 moves in the sliding movement direction. By the movement to the other side, the distal end side member 19 is pulled by the distal end side cord-like body 37 and moved to the other side in the sliding movement direction to be switched to the other side protruding state.

A dust-proof cover body 38 that covers the slide operation means 33 is provided on each of the base side link member 16 and the tip side link member 18 so as to protrude in the slide direction.
That is, the dust-proof cover body 38 is attached in a cantilevered manner toward the outside in the sliding movement direction at both ends of the sliding part in the sliding direction of the base-side linking member 16. The dust-proof cover body 38 of the side linking member 16 is connected to one end of the dust-proof cover body 38 in the one-side protruding state, and is connected to the relay linking member 17 located on the outer side of one end of the base-side linking member 16 and the base-side cord-like shape. It is provided so that it may be located in the connection place with the body 35, or the inversion sprocket 34 provided in the relay linkage member 17, and what is attached to the other end part in the other side protruding state is the base side linkage member 16. It is provided so as to be located immediately below the reversing sprocket 34 provided on the connection location of the relay linkage member 17 and the base side cable-like body 35 located on the outer side of the other end portion or on the relay linkage member 17.
A dust-proof cover body 38 is attached in a cantilevered manner toward both sides of one end and the other end in the slide movement direction of the distal end side linking member 18 so as to be outward in the slide movement direction. The dust-proof cover body 38 of the side linking member 18 has a tip-side member 19 and a tip-side cord-like member that are attached to one end and are located outward from one end of the tip-side linking member 18 in a side protruding state. The tip side member provided so as to be located immediately below the connection portion with the body 37 and attached to the other end portion in the other side protruding state is located outward from the other end portion of the tip side linking member 18. 19 and the tip-side cord-like body 37 are provided so as to be located immediately below the connecting portion.
The base-side linking member 16 and the tip-side linking member 18 are configured to have the same length as the base-side member 15 or a slightly shorter length when the dust-proof cover body 38 is included. The side linking member 16 and the distal end side linking member 18 are configured to be accommodated on the base side member 15 including the dustproof cover body 38.
Since the relay linking member 17 and the distal end side member 19 are not provided with portions bent upward on both lateral sides, dustproof walls are provided on both lateral sides so that dust does not scatter laterally. 39 is attached.

[Another embodiment]
(1) In the above embodiment, the engaging member 24 is constituted by a plurality of guide members, but the engaging member may be constituted by a plurality of guide rollers.
More specifically, as shown in FIGS. 9 to 11, a pair of base side guide rails 22a formed in a U-shaped cross-sectional shape, the base side member 15 so that the openings formed in the lateral sides thereof face each other. The relay link member 17 is provided with a pair of E-shaped guide rails 45 formed in an E-shaped cross-sectional shape, and a pair of guide rails 22b formed in a U-shaped cross-sectional shape are arranged on the lateral side thereof. The distal end side member 19 is provided so that the openings formed in the portions face in opposite directions. In addition, the E-shaped guide rail 45 forms the first guide rail 27 at the portion where the opening is formed toward the outer side, and the second guide at the portion where the opening is formed toward the inner side. A rail 28 is formed, and the first guide rail 27 and the second guide rail 28 are integrally formed.
Then, the base side engaging member 23 and the first relay engaging member 25 provided in the base side linking member 16 are each constituted by four guide rollers rotatable around the horizontal axis, and the base side engaging member The guide roller 23 is engaged with the inner side of the base side guide rail 22 a, and the guide roller of the first relay engaging member 25 is engaged with the outer side of the first guide rail 27. Further, the second relay engaging member 26 and the front end side engaging member 24 provided in the front end side engaging member 18 are each constituted by four guide rollers that are rotatable around the horizontal axis, and the second relay unit. The guide roller in the engagement member is engaged with the inner side of the second guide rail 28, and the guide roller in the distal end side engagement member 24 is engaged with the outer side of the distal guide rail 22b.
As shown in FIGS. 9 and 10, each guide rail has a dust-proof length equal to that of the guide rail on the side where the opening is formed so that dust generated in the guide rail is not scattered laterally. A plate 46 may be provided.

(2) In the above-described embodiment, the intermediate component A is configured to include the base-side linking member 16, the relay linking member 17, and the tip-side linking member 18, and the sliding fork device 14 is configured in five stages. However, the intermediate component A may be configured with a single linking member, and the sliding fork device 14 may be configured in three stages.

(3) In the above-described embodiment, the length in the sliding direction of the base-side linking member 16 and the tip-side linking member 18 is smaller than the length of the relay linking member 17, but the base-side linking member 16 and the tip-side side The length of the linkage member 18 in the sliding direction may be the same as or substantially the same as the length of the relay linkage member 17.

(4) In the above embodiment, the slide operation means 33 is configured to link the movement of the base side linkage member 16, the movement of the relay linkage member 17, the movement of the distal end side linkage member 18, and the movement of the distal end side member 19. Although configured, the slide operation means 33 is composed of a rack and a pinion gear so that the base side linkage member 16, the relay linkage member 17, the tip side linkage member 18, and the movement of the tip side member 19 are individually moved. It may be configured.

(5) In the above-described embodiment, the slide operation means 33 is configured by a plurality of cord-like bodies including the base-side cord-like body 35, the relay cord-like body 36, and the tip-side-side cord-like body 37, and the base-side linking member The movement of 16, the movement of the relay linking member 17, the movement of the distal end side linking member 18, and the movement of the distal end side member 19 are linked, but may be configured to be linked by other means, for example, The slide operation means 33 is constituted by a plurality of link mechanisms so as to link the movement of the base side linkage member 16, the movement of the relay linkage member 17, the movement of the tip side linkage member 18, and the movement of the tip side member 19. You may comprise.

(6) Although the slide type fork device 14 is provided in the stacker crane 2 in the above embodiment, the slide type fork device 14 may be provided in a transfer device provided in a self-propelled carriage or a fixed base.

Floor plan of automated warehouse Side view of automated warehouse Exploded perspective view of fork device Disassembled side view of fork device Cross-sectional front view of fork device The figure which shows the exit / exit drive means in a fork device The figure which shows the engagement state of an engaging member and a guide rail Partially cutaway side view showing one side protruding state and the other side protruding state Exploded side view of fork device in another embodiment Sectional front view of the fork device in another embodiment The top view of the fork device in another embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 14 Fork device 15 Base side member 16 Base side linkage member 17 Relay linkage member 18 Tip side linkage member 19 Tip side member 22a Base side guide rail 22b Tip side guide rail 23 Base side engagement member 24 Tip side engagement member 25 1st relay engaging member 26 2nd relay engaging member 27 1st guide rail 28 2nd guide rail 31 Exit drive means 32 Slide drive means 33 Slide operation means 34 Reverse guide part 35 Base side cord-like body 36 Relay Cable-shaped body 37 Tip-side cable-shaped body 38 Dust-proof cover body A Intermediate component

Claims (6)

A slide-type fork device configured such that a tip-side member for supporting an article is withdrawn / retreated with respect to a base-side member,
Guide rails are provided on each of the base side member and the tip side member,
A base-side engaging member that slidably engages with a base-side guide rail provided in the base-side member, and a distal-end side that slidably engages with a distal-side guide rail provided in the distal-end side member An intermediate component with an engagement member is provided;
The base side engaging member is provided in a state in which the engaging action range is formed smaller than the length of the guide rail on the base side,
The distal end side engaging member is provided in a state in which the engaging action range is formed smaller than the length of the distal end side guide rail,
Engage the entire range of engagement action of the base side engagement member with the guide rail on the base side, and engage the entire range of engagement action of the distal side engagement member with the guide rail on the distal side. The intermediate component is moved with respect to the base side member so as to be positioned at an intermediate position in a movable range along the longitudinal direction of the guide rail on the base side, and the tip side member is maintained. In a retracted state in which the intermediate component is moved with respect to the intermediate component such that the intermediate component is positioned at an intermediate position in a movable range along the longitudinal direction of the guide rail on the distal end side, One side projecting state in which the distal end side member is moved to one end side of the movable range with respect to the intermediate component, and the intermediate component is moved to one end of the movable range with respect to the intermediate component Said base side In order to switch to the other side projecting state in which the distal end side member is moved to the other end side of the movable range with respect to the intermediate component portion with respect to the other end side of the movable range with respect to A slide-type fork device provided with a retracting drive means for sliding the intermediate component with respect to the side member and sliding the tip side member with respect to the intermediate component. A base-side linking member in which the intermediate component includes the base-side engaging member and the first relay engaging member; a tip-side linking member provided with the tip-side engaging member and the second relay engaging member; And a relay linking member comprising a first guide rail with which the first relay engaging member engages and a second guide rail with which the second relay engaging member engages,
The first relay engaging member is provided in a state in which the engaging action range is formed smaller than the length of the first guide rail;
The second relay engaging member is provided in a state in which the engaging action range is formed smaller than the length of the second guide rail;
The exit / exit drive means
The entire range of the engagement action range of the first relay engagement member is engaged with the first guide rail, and the entire range of the engagement action range of the second relay engagement member is the second guide rail. In the form of maintaining engagement with
In the retracted state, the base side linking member is moved relative to the base side member so as to be positioned at an intermediate position in a movable range along the longitudinal direction of the guide rail on the base side, and the relay linking member is moved to the first side. The base-side linking member is moved so that the base-side linking member is positioned at an intermediate position in a movable range along the longitudinal direction of the one guide rail, and the tip-side linking member is moved in the longitudinal direction of the second guide rail. The front end side member is moved to the intermediate position of the movable range along the longitudinal direction of the guide rail on the front end side. Move relative to the relay linkage member so that the linkage member is located;
In the one side projecting state, the base side linking member is moved to one end side of the movable range relative to the base side member, and the relay linking member is moved to the base side linking member in the movable range. Move to one end side, move the leading end side linking member to one end side of the movable range with respect to the relay linking member, and move the leading end side member to the leading end side linking member within the movable range. Move it to one end,
In the other side protruding state, the base side linking member is moved to the other end side of the movable range with respect to the base side member, and the relay linking member is moved within the movable range with respect to the base side linking member. The distal end side linking member is moved to the other end side of the movable range with respect to the relay linking member, and the distal end side member is moved with respect to the distal end side linking member. In order to move to the other end side of the possible range, the base side link member is slid with respect to the base side member, the relay link member is slid with respect to the base side link member, and the relay link member The sliding fork device according to claim 1, wherein the front end side linking member is slid on the front end side linking member, and the front end side member is slid on the front end side linking member.   The length in the sliding direction of the base side member, the relay linking member, and the distal end side member is the same or substantially the same, and the length in the sliding direction of the base side linking member and the distal end side linking member The slide-type fork device according to claim 2, which is the same or substantially the same and is formed to be smaller than the length of the relay linkage member.   The exit / retreat driving means slides the base-side linking member with respect to the base-side member, and slides the relay-linking member by movement of the base-side linking member. 4. The slide-type device according to claim 2, further comprising: a slide operation unit that slides the distal end side linking member by movement and slides the distal end side member by moving the distal end side linking member. 5. Fork device. One end of the slide operation means is connected to the base side member, extends in the slide movement direction, and is guided in the reverse direction by the reverse guide portion provided in the base side link member, and then the relay link member A proximal side cord connected to the
One end connected to the base-side linking member, extended in the sliding movement direction, guided in the reverse direction by the reverse guide portion provided in the relay linking member, and then connected to the tip-side linking member Cords,
One end is connected to the relay linking member, extends in the sliding movement direction, and is guided in the reversing direction by the reversing guide portion provided in the distal end side linking member, and then connected to the front end side member. 5. A sliding fork device according to claim 4, wherein the sliding fork device is constituted by a cord-like body.   The sliding fork according to claim 4 or 5, wherein a dust-proof cover body that covers the slide operating means is provided on each of the base side linkage member and the distal end side linkage member so as to protrude in the sliding direction. apparatus.

Images