JP2020128291A - Container stacking mechanism in rack - Google Patents

Abstract

To provide a container stacking mechanism in rack in which a container receiving claw body is pivotally attached so as to fall/stand at vertical and horizontal frames which become the skeleton of a rack beforehand, and in which the next container can be stacked below an old container by raising the old container with a new container via a falling/standing operation of the container receiving claw body by the lifting operation of a fork which has moved below the container receiving claw body, that is, below the old container which has already been mounted on the container receiving claw body.SOLUTION: A container stacking mechanism in rack comprises: a container receiving claw body pivotally attached to a predetermined position of vertical and horizontal frames so as to fall/stand; a fork which expands/contracts and goes up/down freely and which transports a container below the container receiving claw body; a claw body falling mechanism constituted so as to displace and operate so that the container receiving claw body does not inhibit the container lifting track according to the lifting of the fork; and a transport mechanism for transporting the stacking container in which the next container is stacked by the lifting of the fork and is placed and constituted at the container receiving claw body to a predetermined position of the rack.SELECTED DRAWING: Figure 9

Description

The present invention relates to a container stage in a rack in which a container receiving claw is pivotally attached to a frame constituting a rack so that the container receiving claw can be sequentially lifted by a fork from below to stack the containers. Regarding the loading mechanism.

2. Description of the Related Art Conventionally, an upwardly open container for storing objects to be conveyed such as bread, confectionery, machine tools and parts has been often used for storing and conveying the objects to be conveyed.

Such a container is emptied or is stored in a warehouse rack by stacking it in several stages as an efficient storage form when storing the stored items in a warehouse.

In order to realize such a stacking mode, a technology is used in which containers are stacked in advance on a lift installed adjacent to a rack frame constructed by assembling a number of frames vertically and horizontally, and the containers are transferred to a predetermined position of the rack frame by the lift in the stacking mode. Is disclosed (for example, see Patent Document 1).

JP, 2018-154479, A

However, such a stacking technique requires stacking work before loading on a rack in advance, and also requires a separate transfer work to the rack in the stacked state, and a mechanism for performing the two-stage work is required. In addition, the operator needs to perform a two-step work operation.

Therefore, the device of the mechanism is complicated, the workability is complicated, the cost is disadvantageous, the working time is lengthened, and the rack storage work of the container is made more efficient.

According to the present invention, a container receiving pawl is pivotally attached to a vertical and horizontal frame that is a skeleton of a rack in advance so that the container can be mounted on a fork that can be expanded and contracted and raised and lowered, that is, already under the container receiving pawl. Moved to the lower side of the old container mounted on the container and lifted the old container with the new container through the fall operation of the container receiving pawls by the ascending operation of the fork, stacking the next container below the old container, and so on. A rack that is configured so that a large number of containers can be successively lifted from below by means to perform stacking work, and by performing stacking transfer to a predetermined position as it is, racks that can perform stacking work and stacking transfer by simple work We will provide a stacking mechanism for containers inside.

The present invention is directed to a container receiving claw that is pivotally attached to a predetermined position of a vertical and horizontal frame that serves as a skeleton of a rack, an extendable and retractable fork that transports a container below the container receiving claw, and a fork lifter. Along with this, the claw body fall-down mechanism is configured so that the container receiving claws are displaced so as not to obstruct the container ascending path, and the next container is further moved below the container placed on the container receiving claws by the fork rising. A container stacking mechanism in a rack is provided, which is configured to be stacked on the container receiving claws and sequentially stacked from below to transfer the stacked containers to a predetermined position in the rack. It is something to do.

Further, the claw body fall-down mechanism is configured such that the container receiving claw body is rotationally erected and displaced in a state in which there is no pushing-up stress load from below about the pivot axis to form a container mounting form and a pushing-up stress load from below. In a certain state, the claw body urging means for pivotally tilting and displacing the container for receiving the container is provided between the vertical and horizontal frames and the container receiving claw body.

Further, the transfer mechanism includes a traveling rail laid along a longitudinal direction of a rack row in which a plurality of racks are adjacent to each other in a certain direction and a transfer device that is driven and driven on the traveling rail, and the fork is It is characterized in that it is mounted on the transfer device.

In addition, the containers form a gap between the containers when the upper support portions project downward or upward at predetermined positions of the rectangular bottom side edge portion or the upper opening side edge portion and are stacked in a stack. The container receiving pawl is provided at the gap position that does not interfere with the upper mounting support portion when the containers are stacked and mounted on the vertical and horizontal frames.

According to the first aspect of the invention, the container receiving claw is pivotally attached to a predetermined position of the vertical and horizontal frames that are the skeleton of the rack, and the extendable and vertically movable fork for transferring the container below the container receiving claw. And the claw body fall-down mechanism configured so that the container receiving claws are displaced and actuated as the fork rises so as not to obstruct the container ascending path, and the fork is further placed below the container placed on the container receiving claws by the fork rising. A vertical and horizontal frame that serves as a skeleton of a conventional existing rack because it is composed of a transfer mechanism for transferring a stacked container that is stacked on the container receiving claws and moved to a predetermined position of the rack when it is lifted. Since the container receiving claws are pivotally attached to the predetermined position of the container so that they can be stacked on the container receiving claws in order from below and the stacking container can be transferred to the predetermined position of the rack by the transfer mechanism, it is easy. With this structure, stacking of containers can be performed efficiently, and the subsequent transfer work of containers can be easily performed by the existing transfer mechanism, and the stacking work of containers and the subsequent transfer work can be performed without requiring a special complicated mechanism. There is an effect that can be done efficiently.

According to the second aspect of the present invention, the claw body fall-down mechanism causes the container receiving claw body to be rotationally erected and displaced in a state in which the container receiving claw body is pushed up about the pivot shaft from below and there is no stress load. In addition, the pawl urging means for pivotally tilting and displacing the container under the condition of pushing up the load from below is formed between the vertical and horizontal frames and the container receiving pawl so that the fork is formed. There is an effect that the container receiving claws can be immediately and surely restored to various forms according to the rise of the container and the new container from below can be placed on the container receiving claws together with the stacked containers.

According to the invention of claim 3, the transfer mechanism is a traveling rail laid along the longitudinal direction of a rack row in which a plurality of the racks are adjacent in a certain direction, and a transport device for driving and driving on the traveling rail. Since the fork is mounted on the transfer device, it is possible to more efficiently perform the stacking work of the containers for mounting the containers at a predetermined position of the desired rack and the subsequent transfer work. effective.

According to the invention of claim 4, when the container is stacked in a stacking manner with the upper support portion projecting downward or upward at a predetermined position of the rectangular bottom side edge portion or upper opening side edge portion. Since the container receiving claws are configured so as to form a gap between them, and the container receiving claws are provided at the gap positions that do not interfere with the upper supporting portion when the containers are stacked and placed in the vertical and horizontal frames, the container receiving claws are provided. When the body is in an upright/tilted position, the tip of the container receiving pawl hits the bottom of the stacking container and the container receiving pawl smoothly receives the load of the stacking container. There is an effect that it can be placed or placed in a container.

It is a whole perspective view showing composition of a container stacking mechanism concerning the present invention. It is a whole perspective view showing composition of a container stacking mechanism concerning the present invention. It is a typical perspective view showing the composition of the rack of the container stacking mechanism concerning the present invention. It is a partial perspective view which shows the structure of the rack of the container stacking mechanism which concerns on this invention. It is a typical side view showing composition of a container receiving nail object of a container stacking mechanism concerning the present invention. It is a typical side view showing composition of a container receiving nail object and a container of a container stacking mechanism concerning the present invention. It is a perspective view showing composition of a transfer mechanism of a container stacking mechanism concerning the present invention. It is explanatory drawing which shows the usage example of the container stacking mechanism which concerns on this invention. It is explanatory drawing which shows the usage example of the container stacking mechanism which concerns on this invention. It is explanatory drawing which shows the usage example of the container stacking mechanism which concerns on this invention.

The gist of the present invention is to provide a container receiving claw that is pivotally attached to a predetermined position of a vertical and horizontal frame that serves as a skeleton of a rack, an extendable and vertically movable fork that transports a container below the container receiving claw, and a fork of the fork. As the container receiving claws move upward, the claw body fall-down mechanism is configured to operate so as not to obstruct the container ascending path, and the fork further moves below the container placed on the container receiving claws to move the next The container is stacked and placed on the container receiving claws, and the containers are sequentially stacked from below to transfer the stacked containers to a predetermined position of the rack as a result.

Further, the claw body fall-down mechanism is configured such that the container receiving claw body is rotationally erected and displaced in a state in which there is no pushing-up stress load from below about the pivot axis to form a container mounting form and a pushing-up stress load from below. In a certain state, the claw body urging means for rotatably tilting and displacing the container for receiving the container is provided between the vertical and horizontal frames and the container receiving claw body.

Further, the transfer mechanism includes a traveling rail laid along a longitudinal direction of a rack row in which a plurality of racks are adjacent to each other in a certain direction and a transfer device that is driven and driven on the traveling rail, and the fork is It is characterized in that it is mounted on the transfer device.

In addition, the containers form a gap between the containers when the upper support portions project downward or upward at predetermined positions of the rectangular bottom side edge portion or the upper opening side edge portion and are stacked in a stack. It is characterized in that the container receiving claws are provided in the vertical and horizontal frames at a gap position that does not interfere with the upper support portion of the container.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is an overall explanatory view of a combination of a rack and forks for stacking containers, FIG. 2 is an overall explanatory view of a rack in which containers are stacked, and FIG. 3 is a schematic perspective view showing the configuration of the rack. 4, FIG. 4 is a partial perspective view showing the configuration of the rack, FIG. 5 is a schematic side view showing the configuration of the container receiving claw body, FIG. 6 is a schematic side view showing the configuration of the container receiving claw body, and FIG. FIG. 8 to FIG. 10 are perspective views showing the configuration of the transfer mechanism, and FIGS. 8 to 10 are explanatory views showing an example of use of the container stacking mechanism.

[1. Overview of the present invention]
As shown in FIGS. 1 and 2, the rack 1 holds four vertical frames 11 as pillars while maintaining positions and distances corresponding to the four corners of the rectangular container B. Has a rack structure sequentially arranged in a fixed direction.

A plurality of horizontal frames 12 are horizontally laid between the two vertical frames 11, 11 at regular intervals in the vertical direction to reinforce the vertical frame 11.

Further, a plurality of racks 1 having such a structure are arranged adjacent to each other in a certain direction to form a rack row 1L. As shown in FIG. 1, two rack rows 1L of this embodiment are provided in parallel at a predetermined interval.

The containers B are stacked in order from the bottom in the frame space S of the one-unit support frame 10 of the rack 1, and in the present invention, the one-unit support frame space of the one-unit support frame 10 of the rack 1 is thus constructed. (Hereinafter, also simply referred to as a frame space.) The present invention relates to a rack structure for stacking containers B from below in S and a function of stacking containers on a rack.

That is, the container stacking mechanism A according to the present invention is a mechanism for stacking and stacking the containers B in the frame space S of the rack 1 so as to face each vertical frame 11 of the one-unit support frame 10 at a predetermined height. Four container receiving claws 2 are provided on each of the surfaces, and containers are sequentially stacked on the container receiving claws 2 from the lower side so that the containers B are stacked in the one-unit support frame space S. It was done.

Here, the container B used in the container stacking mechanism A according to the present invention may be any one that can be stacked and stacked in a size that can be mounted on the rack 1. For example, the transferred object itself or the transferred object is stored. Intended to be a general weight, tenbaco or pallet that is placed or placed.

Further, as the container B, it is preferable to employ, for example, a container in which an upper mounting support portion 100 is provided so as to project downward or upward at a predetermined position of a rectangular side edge portion or an upper opening side edge portion. By this superposing support portion 100, a plurality of containers B can be stacked in layers to form a gap 101 between the containers B, and by disposing the container receiving claws 2 in the gap 101, the container receiving claws can be formed. The rotational displacement operation at the time of inserting/removing 2 is facilitated.

In particular, the container B of the present embodiment is configured by projecting upward mounting support portions 100 upward at two positions of the opening edge portions facing each other in the rectangular upper opening.

[2. Configuration of container receiving claw body]
Hereinafter, the configuration of the container receiving claw body 2 for sequentially stacking and stacking the containers B from below will be described in detail. As shown in FIGS. 1 and 3, four container receiving claws 2 are arranged at positions corresponding to the virtual four corner positions of the container B with respect to each of the four vertical frames 11 in the one-unit support frame space S. ing.

As shown in FIG. 3, the container receiving pawl 2 is mounted with a substantially L-shaped bracket 13 on a fixed height of the one-unit support frame 10 with bolts, and the lower portion of the container receiving pawl 2 is attached to the bracket 13, that is, the upper surface. A flat, substantially L-shaped nail base 24 is pivotally supported by the nail fall mechanism 3 so as to be upright and tiltable.

The four inverted L-shaped container receiving claws 2 arranged at the virtual four corners of the container B have a fixed upright tilt direction, for example, the left and right container receiving claws on the front side as shown in FIG. The bodies 2 and 2 and the left and right container receiving claw bodies 2 and 2 are respectively arranged in a left-right direction, and are configured to support the four corners of the bottom surface of the container B from below. In this embodiment, the bracket 13 is pivotally attached so as to stand up and down along the extension and contraction direction of the fork 8 that moves in and out of the frame space S of the rack 1.

In addition, the container receiving claws 2 are positioned in the vertical and horizontal frames 11 and 12 at a position where they do not interfere with the upper supporting portion 100 of the container B, that is, in the gap 101 portion formed between the containers B when the stacked container B1 is formed. It is provided so that it is located.

In other words, as shown in FIG. 6, the container receiving claw 2 has a rotation locus formed by the frontmost part of the container receiving claw 2 about the shaft 26 within the vertical range H of the gap 101 between the containers B. Is configured as follows.

The L-shaped bracket 13 is substantially L-shaped in plan view, and as shown in FIGS. 3 and 4, one side of the L-shaped bracket in plan view is a bracket fixing portion 14 that is fixed to the vertical frame 11. The other side of the L-shape is configured as an inward protruding portion 15 that protrudes inward from the bracket fixing portion 14 into the one-unit support frame space S.

Further, the bracket fixing portion 14 and the inward protruding portion 15 corresponding to each side portion of the L-shaped bracket 13 in the plan view L are formed in a substantially L-shaped cross section, respectively, and extend vertically in the vertical direction. It has a side portion 13a and a bottom side portion 13b that horizontally projects from the lower end of the vertical side portion toward the inside of the L shape in plan view.

The L-shaped bracket 13 is arranged at a predetermined position of the vertical frame 11 of the one-unit support frame 10 with a corner portion of the one-unit support frame space S having an L-shaped corner portion in plan view and a vertical side of the bracket fixing portion 14. The portion 13a is fixed to the opposing side walls of the vertical frames 11, 11 via bolts.

Specifically, each of the L-shaped brackets 13 includes two vertical frames 11 and 11 of the one-unit support frame 10 and the vertical frames 11 and 11 that stand upright on the vertical frames 11 and 11 at a predetermined interval. The inward protrusions 15 are arranged on the respective surfaces facing each other so as to face each other.

Further, the inverted L-shaped container receiving claws 2 arranged at the four imaginary corner positions of the container B are the inward protruding portions of the substantially L-shaped bracket 13 provided on the one-unit support frame 10 as shown in FIG. It is provided at the end of 15.

As shown in FIGS. 4 and 5, the claw base 24 of the container receiving claw 2 is pivotally supported via a shaft 26 on a bearing 25 projecting outward from the vertical side 13a of the bracket 13, and therefore, The container receiving pawl 2 is configured to be tiltable rearward about a shaft 26.

Specifically, the container receiving claw body 2 is formed in a substantially Z-shape in a side view as shown in FIG. 5, and corresponds to the upper side of the Z-shape, and the hook-shaped head 22 on which the container B is placed. And an upright portion 23 that corresponds to a Z-shaped vertical side and is bent from the base end of the hook-shaped head 22 and extends downward so as to be orthogonal to the extension direction of the hook-shaped head 22, and a Z-shaped lower side. And a claw base 24 that is bent from the lower end of the upright portion 23 and extends in a direction opposite to the extending direction of the hook-shaped head 22.

Further, the container receiving claw body 2 is formed in a bifurcated shape from the hook-shaped head 22 in a front view. That is, as shown in FIG. 4, the upright portion 23 and the claw body base 24 of the container receiving claw body 2 are formed by the left and right side walls that are bifurcated around the hook-shaped head 22, and the bearing 25 is It can be fitted on the outer shaft.

The upper surface of the hook-shaped head 22 is formed into a flat portion 21 that is flat as shown in FIG. 5, and the container receiving pawl 2 is in a standing posture (the upright portion 23 of the container receiving pawl 2 is substantially The container B can be placed and stacked in a horizontal plane in the vertical posture).

The width of the flat portion 21 is such that, when the container receiving claw 2 is rotated about the shaft 26 as described above, the tip of the container receiving claw 2 is shown in FIG. The rotation locus formed by the end of the flat portion 21 corresponding to the most distal end of the portion 22 is formed to have a width within the vertical range H of the gap 101 between the containers B.

The rear end 24a of the claw base 24 of the container receiving claw 2 is formed in a vertical shape orthogonal to the flat surface of the flat portion 21 as shown in FIG. When the body recoil mechanism 3 restores the tilted posture to the standing posture, the tip of the claw body base 24 is brought into contact with the outside of the vertical frame 11, that is, the inner side surface of the vertical side portion 13a of the bracket 13 so that the flat portion 21 is leveled. It is possible to maintain the standing posture of the container-receiving claw body 2 in the shape of a circle.

As shown in FIGS. 3 and 4, the bearing 25 is formed in a U-shape in a plan view, so that the U-shaped left and right wall portions of the bearing 25 stand upright with respect to the bottom side portion 13 b of the bracket 13. The U-shaped central wall portion of the bearing 25 is fixed inside the vertical side portion 13a of the bracket 13 via a bolt. A shaft hole for pivotally mounting the shaft 26 is formed substantially at the center of the left and right wall portions of the bearing 25.

That is, the container receiving pawl 2 is externally fitted to the left and right wall portions of the bearing 25 integrated with the vertical frame 11 via the bracket 13 at the bent portion from the Z-shaped upright portion 23 to the pawl base portion 24. The shaft 26 is constructed so that it can stand up and down.

Further, the container receiving pawl 2 is provided with a pawl falling mechanism 3 configured to be displaced and operated so as not to obstruct the ascending course of the container B as the fork rises.

The claw body falling mechanism 3 is configured to rotate the container receiving claw body 2 about the shaft 26 to erect the container receiving claw body 2 in a standing state and to rotate the container receiving claw body 2 in response to a pushing-up stress from below to perform a tilting displacement. For example, in the container receiving claw body 2, the weight of the hook-shaped head 22 is made larger than that of the upright portion 23 and the claw body base 24 so that the center of gravity is placed on the hook-shaped head 22, and the shaft mounting position is used as a reference The hook-shaped head 22 can be eccentrically configured.

Further, the claw body fall-down mechanism 3 makes the container receiving claw body 2 pivotally erected to displace the container receiving claw body 2 about the shaft 26 in a state where there is no upward stress load from below, and also causes the container to be placed on the container, and the upward stress load from below is applied. In a certain state, the claw body urging means 3a which is rotated and tilted to be in a container receiving form is provided between the vertical and horizontal frames 11 and 12 and the container receiving claw body 2.

As the claw body urging means 3a, for example, a spring, a leaf spring, an elastic body such as rubber, a drive device such as pneumatic pressure, hydraulic pressure, electric power, or a rotary cylinder for rotating the shaft 26 can be adopted. In this embodiment, the claw body fall mechanism 3 is configured by interposing the spring 30 as the claw body urging means 3a between the vertical and horizontal frames 11 and 12 and the container receiving claw body 2.

In this way, the container receiving claw body 2 can freely restore its upright posture by the spring 30 as the claw body urging means 3a. As shown in FIG. 5A, the claw body base 24 of the claw body base 24 can be restored. The upright portion 23 and the hook-shaped head portion 22 that bends at its tip are erected via a shaft 26 in an inverted L shape.

The spring 30 has one end connected to the rear end of the claw body base 24 of the container receiving claw body 2 and the other end connected to the upper part of the vertical side portion 13a of the bracket 13 above the rear end of the claw body base 24. Then, it is interposed between the container receiving claw body 2 and the bracket 13.

The container receiving claw 2 is hooked around the shaft 26 as the claw body base 24 is pulled toward the bracket 13 by the contraction elastic force of the spring 30 provided between the claw body base 24 and the bracket 13. The mold head 22 is rotationally displaced so as to project to the inside of the one-unit support frame space S.

In such a container receiving claw body 2, the tip end surface of the claw body base portion 24 is brought into contact with and engaged with the inner side surface of the vertical side portion 13a of the bracket 13, and the hook-shaped head portion 22 is located inside the one-unit support frame space S beyond that. The standing posture is regulated so as not to be rotationally displaced toward one side.

In this manner, the container receiving claw body 2 in the standing posture, which is biased by the spring 30 and restricted in rotation, brings the flat portion 21 of the hook-shaped head portion 22 into a horizontal state.

In other words, the container receiving pawls 2 in the four standing postures of the one-unit support frame 10 have the flat portions 21 of the hook-shaped heads 22 protruding inward in the one-unit support frame space S on the same plane. A virtual horizontal plane formed by the flat portion 21 is formed to support the container B from below.

On the other hand, when a pushing-up stress from below the container B is generated, the container receiving pawls 2 tilt toward the rear side around the shaft 26 and face the container receiving pawls 2 at the four corners as shown in FIG. 5B. Each of them is configured to be rotationally displaced in a container receiving form in the one-unit support frame space S and lifted from below the already placed container B to form a stack of containers B.

Specifically, the container receiving claw body 2 is pressed upward from the claw body head portion 22 against the hook-shaped head portion 22 against the contraction elastic force of the spring 30 between the claw body base portion 24 and the bracket 13 so that the claw body base portion 24 is pressed. Moves away from the bracket 13 and pivotally displaces about the shaft 26 so that the hook-shaped head 22 moves to the outside of the one-unit support frame space S.

That is, the container receiving claw body 2 is in a tilted posture in which the regulation by the abutting engagement between the tip end surface of the claw body base portion 24 and the inner surface of the vertical side portion 13a of the bracket 13 is released.

In other words, the container receiving claws 2 in the four tilted postures of the one-unit support frame 10 tilt the hook-shaped head 22 outward of the one-unit support frame space S to move the container B in the one-unit support frame space S. It will be a container receiving form that secures a climbing path.

The pawl urging means 3a of this embodiment employs the spring 30 (tensile coil spring), but may be, for example, a torsion coil spring. The coil spring is fitted onto the shaft 26 coaxially and one end of the coil spring is attached. The container receiving claw 2 may be fixed and the other end may be fixed to the vertical frame 11.

Further, as shown in FIGS. 3 and 4, at the central corner of each bracket 13, two long guide plates 4 having a U-shaped cross section are attached in the vertical direction by bolts. Each of the long plates 4 has a U-shaped cross section and is formed in a right-angled cross section along the side edge of the inverted L-shaped ceiling plate of the container receiving claw 2 to regulate the corner of the container B. ..

Specifically, the long guide plate 4 has a U-shaped cross section, and has one side part as a long plate fixing part 40 for fixing to the inner wall of the L-shaped bracket 13 and the other side part as a container B. It is configured as a container restricting portion 41 for restricting the container B in the one-unit support frame space S by contacting the outside of the corner of the container.

The two long guide plates 4 and 4 ′ having the above-described structure are provided below the long plate fixing portions 40 and 40 ′ in the vertical direction of the bracket fixing portion 14 corresponding to the central corner of the L-shaped bracket 13 and the inward protruding portion 15. By being fixed to the inside of the side portion 13a, the brackets 13 are provided upright along the extending direction of the vertical frame 11.

That is, in the one-unit support frame space S of the one-unit support frame 10, a corner that fits into the corner of the container B is formed by the two container-constraining parts 41 of the long guides standing upright on the L-shaped bracket 13. The part 43 is formed.

Therefore, each corner of the container placed on the flat portion 21 having an inverted L shape has a step of the container B standardized by four corners 43 formed by two long guide plates 4 and 4'. Stacking is done.

Further, the upper and lower end portions of the container restriction portion 41 of the long guide plate 4 are formed into inclined portions 42, 42 that are inclined outward, and the stacked container B1 is lifted from below and new containers B are sequentially stacked from below. In addition to making it easy to stack, the stacked container B1 is easily taken out from above.

[3. Fork structure]
Next, the structure of the fork 8 for stacking and storing the containers B in the rack 1 will be described. A transfer mechanism 5 for transferring the container B to a predetermined position on the rack 1 is arranged between the two rack rows 1L and 1L, as shown in FIG.

The transfer mechanism 5 includes a stack container B1 in which the next container B is stacked on the container receiving claw body 2 by stacking the next container B by raising the fork 8 below the container B mounted on the container receiving claw body 2 described above. It is configured to be transferred to a predetermined position.

That is, the transfer mechanism 5 basically includes a traveling rail 51 provided between the rack rows 1L and 1L along the longitudinal direction of the rack row 1L as shown in FIGS. 1 and 2, and the traveling rail 51. And a transfer device 50 which can be driven and run along the same.

Although only the traveling rail 51 laid on the ground surface G is shown in this embodiment, a traveling rail with which the upper portion of the transfer device 50 abuts is also provided above the traveling rail 51.

As shown in FIGS. 1, 2 and 7, a fork base 72 is mounted on the transfer device 50 so as to be movable up and down, and the fork 8 is mounted on the fork base 72. That is, as shown in FIG. 7, the transfer device 50 includes a fork 8 that enables the container B to be transferred below the container receiving claw body 2 and that extends and retracts toward the rack 1 and that moves up and down on the device body. It is installed.

The transfer device 50 includes a traveling unit 6 that is driven to travel on a traveling rail 51, a columnar elevating guide 71 that is erected on the traveling unit 6, and a fork 8 that elevates and lowers along the elevating guide 71. 7 and.

The traveling unit 6 includes a traveling base 61 on which the elevating guide 71 is erected, traveling wheels that are supported by a lower portion of the traveling base 61 to drive along the traveling rails 51, and traveling wheels provided on the traveling base 61. And a traveling motor for applying a driving force to the motor.

The elevating unit 7 includes a fork base 72 that moves up and down along the elevating guide 71, a fork frame 74 that is provided upright at the front and rear ends of the fork base 72, and is arranged on the fork base 72 so that the rack 1 is arranged in the direction of arrangement. A fork 8 that expands and contracts in the direction (perpendicular to the traveling direction).

The elevating guide 71 is U-shaped in a side view, and is erected at the front and rear ends of the traveling base 61 of the traveling unit 6 so that the U-shaped opening faces downward, and the front and rear fork guide portions 71a and 71b are provided. I am configuring.

A fork base 72 is arranged between the front and rear fork guide portions 71a and 71b of the lift guide 71. The fork base 72 is continuously linked so as to be capable of moving up and down via front and rear lift guides 71 by a lift actuator 73 provided at the front end of the traveling base 61.

The lift actuator 73 is, for example, an electric motor or a hydraulic motor, and can be appropriately selected according to the lift method. Further, as the lift system, a hydraulic lift system, a wire lift system, an electric lift system or the like can be adopted. In the figure, reference numeral 75 is a control panel for controlling various drive sources.

The fork 8 is mounted on the fork base 72, so that the fork 8 can be lifted and lowered along the lift guide 71.

Further, a fork frame 74 is erected at the front and rear ends of the fork base 72, and the front and rear ends of the stacked containers B1 placed on the forks 8 are guided on the fork base 72 so that the container B is moved up and down. It prevents it from falling carelessly.

As shown in FIG. 8, the fork 8 is composed of a plurality of stages of fork pieces 81, 82, and 83 that can project and retract from the lateral direction of the one-unit support frame 10, and each of the fork pieces 81, 82, and 83 is an end. The parts are connected to each other to perform distraction shortening operation.

The fork 8 is not particularly limited as long as it is configured to be able to project and retreat from the lateral direction of the one-unit support frame 10, and for example, in the traveling direction of the transfer mechanism 5 centered on the fork base 72 by cylinder drive. The fork 8 may be protruded to the right of the left side so that the fork 8 can be freely retracted.

The fork 8 of this embodiment includes a lower fork piece 81 integrally provided on the fork base 72 and a left and right direction of movement of the transfer mechanism 5 centered on the fork base 72 on the lower fork piece 81 via a fork slide mechanism. It is composed of a central fork piece 82 that slides outwards on the side, and an upper fork piece 83 that slides further outward on the left and right sides in the traveling direction of the transfer mechanism 5 on the central fork piece 82 via the fork slide mechanism. .. As the fork slide mechanism, for example, a rack and pinion mechanism or a chain type actuating mechanism can be adopted.

Further, on the upper fork piece 83, a container guide body 84 for guiding the four sides of the container B is provided so that the container B does not slide down in the sliding direction when the container B is placed and slid. ing.

[4. Example of using container stacking mechanism]
Hereinafter, an example of use of the container stacking mechanism A of this embodiment will be described. The container B is mounted on the forks 8 of the transfer mechanism 5 so that the upper support portions 100 formed on the rectangular upper opening edges of the rack 1 facing each other are oriented in the direction orthogonal to the direction in which the forks 8 enter the rack 1. Placed.

The fork 8 on which the container B is placed travels along the rack row 1L by the transfer mechanism 5 and stops before the target rack 1, and as shown in FIG. Extend and enter.

When the extended fork pieces 81, 82, 83 rise in this state, the container B on the fork 8 lifts the stacked container B1 already placed on the container receiving pawl 2 of the one-unit support frame 10 from below. become.

Due to the lifting stress of the fork 8, the container receiving pawl 2 whose shaft is supported by the pawl base 24 pivots the hook-shaped head 22 outside the frame space S about the shaft 26 to raise the existing container B. When the new container B from the next fork 8 comes to a position higher than the hook-shaped head 22 of the container receiving pawl 2 while not interfering with the operation, the new container B does not interfere with the container receiving pawl 2.

Specifically, as shown in FIG. 11, the four container receiving claws 2 of the one-unit support frame 10 hold their respective upright postures and project inwardly at the four corners of the one-unit support frame space S to form a hook. Each flat portion 21 of the die head 22 is placed horizontally in a container.

As shown in FIG. 9, the fork 8 is a new container at a lower position of each container receiving claw 2 in the container mounting form, that is, at a position directly below the stacked container B1 supported by each container receiving claw 2 from below. The B unit is moved into the frame space S of the one-unit support frame 10 so as to be positioned, and stopped. In this way, the forks 8 are arranged in a distracted form so that the forks 8 can be vertically stacked.

Then, when the fork 8 in the extended form is lifted, the upper loading support portion 100 of the container B on the fork 8 is placed on the bottom side edge of the stacked container B1 already placed on each container receiving pawl 2 in the container loading form. While in the engaged state, the container receiving claws 2 are positioned in the gap 101 between the containers B. That is, the fork 8 mounts the stacked container B1 via the container B and ascends.

As the fork 8 rises, the opening edge 102 of the container B comes into contact with the lower end of the hook-shaped head 22 of each container receiving claw 2 as shown in FIG. 6, and when the container B further rises, the hook-shaped head. The container 22 is pushed up from below by the container B, and the container receiving claw 2 is rotationally displaced outwardly of the frame space S about the shaft 26 of the claw body fall mechanism 3.

That is, in the container receiving claw 2, the rotation locus formed by the frontmost part of the container receiving claw 2 (the most distal end of the hook-shaped head 22) about the shaft 26 is within the vertical range H of the gap 101 between the containers B. Since the container B is configured to be housed, the hook-shaped head 22 of the container receiving pawl 2 arranged in the gap 101 between the containers B is displaced so as to relatively escape from the gap 101 when the container B moves up. Will be done.

At this time, since the tip of the hook-shaped head 22 does not hit the bottom surface of the stacking container B1 and interfere with the stacking container B1, the load of the stacking container B1 is applied to the container receiving claw body 2. Instead, the container receiving claw body 2 can smoothly perform the tilted posture.

In this way, the four container receiving claws 2 of the one-unit support frame 10 are tilted to form a container receiving form in which the ascending path of the container B in the frame space S is secured.

When the fork 8 is further raised, as shown in FIG. 9, the container B is constantly pushed toward the inside of the frame space S by the claw body falling mechanism 3 so that the container B receives the most distal end portion (hook-shaped head). (The most distal end portion of 22) is abutted on its side surface and ascended.

The container receiving claw body 2 in the tilted posture releases the contact between the side surface of the container B and the tip of the container receiving claw body 2 when the height position of the bottom surface of the container B becomes higher than the height position of the tip of the container receiving claw body 2. The tilting mechanism 3 restores the tilted posture to the standing posture so as to sneak into the position below the bottom surface of the container B.

In this way, the container receiving pawl 2 immediately restores the container receiving pawl 2 from the tilted posture to the standing posture, that is, from the container receiving form to the original container placing form by the pawl falling mechanism 3, as shown in FIG. Thus, a new container B can be placed on the flat portion 21 of the inverted L-shaped hook-shaped head 22.

While repeating this operation, the containers B are sequentially stacked from the bottom in the frame space S of the one-unit support frame 10 to complete the stacking operation.

As described above, according to the present invention, the container receiving claws are pivotally attached to the predetermined positions of the vertical and horizontal frames, which are the skeletons of the conventional existing racks, so that the container receiving containers can be received in order from the bottom. Since the stacking container can be transferred to a predetermined position of the rack by stacking it on the claws and transferring it to a predetermined position of the rack, the container can be stacked efficiently with a simple structure, and the subsequent transfer operation of the container is also performed by the existing transfer mechanism. Therefore, there is an effect that the stacking work of the containers and the subsequent transfer work can be efficiently carried out without requiring a special complicated mechanism.

In addition, the claw body fall-down mechanism causes the container receiving claw body to be rotationally erected and displaced in a state in which there is no pushing up stress load from below around the pivot axis to form a container mounting form and there is a pushing up stress load from below. In this state, since the pawl urging means for pivotally tilting and displacing the container to bring it into the container receiving form is provided between the vertical and horizontal frames and the container receiving pawl, the container receiving pawl is changed from the container receiving form to the container receiving form. There is an effect that the container can be immediately restored and a new container from below can be placed on the container receiving claw together with the stacked container.

Further, the transfer mechanism is composed of a traveling rail laid along the longitudinal direction of a rack row in which a plurality of racks are adjacent in a certain direction and a transfer device driven and driven on the traveling rail, and the fork is mounted on the transfer device. Therefore, there is an effect that it is possible to more efficiently perform the stacking operation of the containers for loading and mounting the containers at the predetermined position of the desired rack and the subsequent transfer operation.

In addition, when the containers are stacked by stacking the upper support parts projecting downward or upward at predetermined positions on the bottom edge or the upper opening side edge of the rectangular shape, a gap is formed between the containers. Since the container receiving pawls are provided in the gap position that does not interfere with the upper support when the containers are stacked and placed in the vertical and horizontal frames, the container receiving pawls can be placed in the upright/tilted posture. The tip of the body hits the bottom of the stacking container, and the container receiving pawls can be smoothly put into the container mounting form or the container receiving form without receiving the load load of the stacking container. is there.

A Container stacking mechanism B Container S Frame space 1 Rack 10 One-unit prop frame 11 Vertical frame 12 Horizontal frame 13 Bracket 2 Container receiving claw 21 Flat part 22 Hook type head 23 Upright part 24 Claw base 25 Bearing 26 Shaft 3 Claw body fall mechanism 30 Spring 4 Long plate for guide 5 Transfer mechanism 50 Transfer device 51 Traveling rail 6 Traveling part 7 Elevating part 8 Fork 81 Lower fork piece 82 Central fork piece 83 Upper fork piece 9 Fork slide mechanism

Claims (4)

A container receiving claw that is pivotally attached to a predetermined position of the vertical and horizontal frames that will be the skeleton of the rack so that it can be inverted.
An extendable and retractable fork that transfers the container below the container receiving claw,
With the lifting of the fork, the container receiving claw body is configured to be displaced so as not to obstruct the container ascending course, and a claw body falling mechanism,
A transfer mechanism for transferring the stacked container, which is configured by stacking the next container by stacking the next container by raising the fork to the lower position of the container placed on the container receiving pawl by raising the fork, to a predetermined position on the rack. A stacking mechanism for containers in a rack. The claw body fall-down mechanism is configured so that the container receiving claw body is rotationally erected and displaced about the pivot shaft about a pivot axis in a state in which there is no upward stress load, and there is a upward stress load. The rack according to claim 1, wherein claw body urging means for pivotally tilting and displacing the container in a state of being in a state is provided between the vertical and horizontal frames and the container receiving claw body. Inside container stacking mechanism. The transfer mechanism includes a traveling rail laid along a longitudinal direction of a rack row in which a plurality of racks are adjacent to each other in a certain direction, and a transfer device that is driven and driven on the traveling rail, and the fork is the transfer unit. The container stacking mechanism in the rack according to claim 1 or 2, which is mounted on a device. The containers are provided with a mounting support portion projecting downward or upward at a predetermined position on the bottom side edge or the upper opening side edge of the rectangular shape so that a gap is formed between the containers when stacked. 4. The container receiving claw body is provided in the gap position that does not interfere with the upper mounting support portion when the containers are stacked and mounted on the vertical and horizontal frames. Stacking mechanism in the rack.

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