JPH09255154A - Reciprocating base of cargo processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reciprocating base for a cargo processor, which is capable of preventing the sticking of adhesives for temporarily fixing the layers of cargos and saving the burden of maintenance. SOLUTION: A reciprocating base 5 is traveled between a stage unloading section 1 and a stage loading section 2 and moved to the layers of loaded cargos. For the reciprocating base 5, a plurality of carriage rollers 10 are provided between truck side frames 5a and the leading one or two rollers 10 are used as driving carriage rollers 10A. A resin cover 10b made of an elongated/ contracted tube or the like is provided in the remaining non-driving carriage rollers 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load handling device for picking up a desired number of loads stacked on a pallet or the like and stacking the load on another pallet or the like, and more particularly to improvement of a carriage thereof.

[0002]

2. Description of the Related Art Conventionally, a plurality of packages stacked on each pallet may be transferred to another pallet in units of the number of stages. For example, in a canned beverage production plant, cardboard boxes containing canned beverages are stacked in pallets according to the type of beverage, and a desired number of tiers are taken out from these pallets, and various pallets are prepared for each shipping destination. As a load handling device that takes out each of such steps, the applicant of the present invention runs a carriage between the stepping part and the upper part of the stacking part, and reciprocates between the layers of the articles stacked on the stepping part. It has been proposed that a table be inserted to pick up a package (for example, Japanese Utility Model Publication No. 7-14266). In the carriage, a plurality of carriage rollers are provided between the carriage side frames, and the leading one or two carriage rollers are rotationally driven in the scooping direction. A chute is provided at the rear end of the carriage. In the step-down section, the uppermost and second-stage loads to be scooped by the step-down section are clamped between the opposing stoppers so that the load does not collapse when the carriage enters and exits. In addition, between the layers of the upper and lower parcels, several places are temporarily fixed with a hot-melt type adhesive so that the cargo does not collapse while being conveyed by the pallet.

[0003]

However, if the layers of the baggage are temporarily fixed with the adhesive in this way, the adhesive for the temporary fixing is used as the carriage roller of the carriage when the carriage enters between the layers. Or may adhere to the surface of the chute. When the adhesive is attached, not only a step is formed between the portion where the adhesive is attached and the portion where the adhesive is not attached, but also the frictional force becomes uneven on the carriage roller and the chute, which impairs the straightness of the load. The smooth cargo handling by the carriage is hindered. Therefore, it is often necessary to clean or replace the carriage roller or chute, which requires maintenance.

The present invention solves the above-mentioned problems, and an adhesive for temporary fixing between layers of luggage is less likely to adhere to the carriage, and a carriage for a cargo handling apparatus that can save maintenance work is provided. The purpose is to provide. Another object of the present invention is to make it possible to smoothly slide down a load, make it difficult for the adhesive to adhere to the chute thereof, and to easily perform the processing for preventing the adhesion of the adhesive on the carriage roller. .

[0005]

A load handling apparatus to which a carriage according to the present invention is applied has a step-down section having an elevating table apparatus for placing loads in a stacked state, and a step-down section arranged in parallel with the step-down section. A stacking unit having a loading platform, a lifting platform device of the loading / unloading unit, and an upper part of the loading platform of the stacking unit are provided so as to be capable of reciprocating travel, and with traveling to the loading / unloading unit side. And a carriage capable of picking up the cargo by entering between the layers of the cargo stacked on the stacking section. The carriage includes a pair of carriage side frames, a plurality of carriage rollers provided between the carriage side frames, and one or a plurality of carriage rollers from the top of the step-down section side, which rotate in the baggage picking direction. And a carriage roller driving device for driving. Each of the carriage rollers other than the rotatively driven carriage roller is made of metal, and its surface is covered with a resin coating for preventing adhesion of the hot-melt adhesive. The material of the resin coating is not particularly limited.
Generally, a resin material has a lower adhesiveness to a hot melt adhesive than a metal material.

According to the load handling apparatus having this structure, the loads stacked on the lifting platform device at the loading / unloading unit are lifted by the carriage to a height at which the loads on the uppermost layer can be picked up. The carriage travels to the step-down section, and the traveling operation and the rotation of the drive carriage roller scoop the uppermost load onto the carriage roller. The carriage that picks up the luggage runs in the opposite direction and unloads at the stacking section. While the carriage is located in the stacking unit, the elevator unit lifts the cargo by one stage and waits in the stacking unit. In the process of repeating such operations, when the layers of the luggage are temporarily fixed with the hot-melt adhesive, the carriage peels off the adhesive as the scooping is done, and the adhesive remaining on the lower surface of the luggage is replaced by the carriage roller. Will be rubbed. However, since each carriage roller is provided with a resin coating, the hot-melt type adhesive is unlikely to adhere due to the property of the resin, and the amount of adhesive adhered is small even after repeated use. Therefore, the trouble of cleaning or replacing the carriage roller can be saved. It has been confirmed by experiments that, in the cargo handling apparatus having the above-mentioned configuration, the resin coating as described above prevents the adhesion of the adhesive.

In the carriage having the above structure, a chute may be provided between the pair of bogie side frames on the rear end side of the carriage roller array, and a fluororesin coating layer may be provided on the surface of the chute. Further, the resin coating of the carriage roller may be a stretchable resin tube.
The chute facilitates loading and unloading of luggage, but the provision of a fluororesin coating layer facilitates slipping and further facilitates loading and unloading of luggage. In addition, the fluororesin coating layer makes it difficult for the adhesive remaining on the lower surface of the luggage to adhere. When the resin coating of the carriage roller is a stretchable resin tube,
The resin coating can be formed on the roller surface by a simple process of covering with a resin tube and shrinking, and the manufacturing cost becomes low.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The overall outline will be described with reference to FIG. In this load handling apparatus, a step-down unit 1 and a step-stacking unit 2 are arranged side by side, and a carriage 5 that travels back and forth on a rail 4 of a main body frame 3 is provided between them. The unloading unit 1 includes a carry-in conveyor 6 for carrying in pallets P1 on which loads W are stacked, and a lifting device for lifting the carried pallets P1 and sequentially lifting the loads W on each stage to the level of the carriage 5. 7 and 7. The stacking unit 2 is provided with a lifting platform device 9 which is a loading platform and an unloading conveyor 8. An empty pallet P2 is placed on the lifting platform device 9 and the loading and unloading unit 2 is used by the carriage 5. Loaded luggage is loaded. The carriage 5 has a large number of carriage rollers 10 that form a roller conveyor, and scoops the cargo W one step at a time at the step-down section 1 and lowers it to the stacking section 2.

On the upper part of the step-down unit 1, when scooping by the carriage 5, the uppermost-stage load W is sandwiched and the scooping aligning device 1 is sandwiched.
1 and a clamp device 12 for sandwiching the luggage W at the second stage from the top. The scooping alignment device 11 includes the step-down unit 1.
The upper stopper 13 is provided at a position opposite to the carriage entry side, and the shutter 14 is provided at the carriage entry side. The clamp device 12 is composed of a lower stopper 15 provided below the upper stopper 13 and a stopper 16 located below the shutter 14. The stopper 16 serves as a pusher. Above the stacking unit 2, a scrubbing alignment device 19 including a stopper 17 and a shutter 18 is provided.

Next, details of each section will be described. The lifting platform devices 7 and 9 of the step-down unit 1 and the stacking unit 2 are the guide columns 2.
Elevating arms 22 and 23 for elevating along 0 and 20 are provided in parallel, and elevating and lowering drive devices 21 and 21 for elevating and lowering these elevating arms 22 and 23 by a motor via a hanging rope or a ball screw are provided. It is a thing. Step down section 1
Carry-in conveyor 6 and carry-out conveyor 8 of stacking section 2
Each comprises a chain conveyor, and the chain path is depressed downward in a U-shape (not shown) so that the lifting arms 22 and 23 of the lifting platform devices 7 and 9 can respectively sink. Is provided.

As shown in FIGS. 2 and 3, the carriage 5 has a large number of carriage rollers 10 mounted between a pair of carriage side frames 5a, 5a, and each carriage side frame 5a is
Rails 4 provided on the two upper frame members 3a of the main body frame 3
In addition, it is installed so as to be able to move back and forth through a running guide 24 such as a linear motion bearing or wheels. A rack 25 is provided on the main body frame 3 along each rail 4, and a self-propelled traveling device 28 including a pair of pinions 26 (FIG. 2) meshing with the rack 25 and a motor 27 with a speed reducer is used as a trolley. It is mounted on the side frame 5a. The pinions 26, 26 on both sides are
They are connected to each other by a rotating shaft 26a.

Of the carriage rollers 10 of the carriage 5,
The first two carriage rollers 10A on the step-down unit 1 side
Is a carriage roller driving device 2 mounted on the carriage 5.
9 is a driving carriage roller that is rotationally driven.
Further, on the rear end side of the arrangement of the carriage rollers 10, a plate-like chute 30 having an upper surface descending and inclined is provided.
It is attached across a and 5a. As shown in FIG. 3B, each of the non-driving carriage rollers 10 has a metal roller body 10a made of iron or the like with a resin coating 10b on its surface. A resin tube made of vinyl chloride is used for the resin coating 10b, and the resin tube is covered with the roller body 10a and then contracted by heating or the like to be attached to the roller body 10a. As the resin that covers the roller body 10a, in addition to vinyl chloride, thermosetting resins such as silicon resin (silicon rubber) and polyimide can be used, and thermoplastic resins include polyethylene, polypropylene, fluororesin, Polyamide (nylon, etc.), polycarbonate, saturated polyester, etc. can be used. When a thermoplastic resin such as vinyl chloride is used, as described above, it is possible to easily form a resin coating on the surface of the roller body 10a by covering the roller body 10a with a tubular material and then performing heat shrinkage. it can. Further, when a fluororesin is used, a resin coating having excellent wear resistance and high durability can be formed. A coating layer of fluororesin such as tetrafluoroethylene resin is formed as a resin coating on the chute 30 only or on the entire surface. It should be noted that, except for the drive carriage roller 10A, it is desirable that the carriage 5 be covered with resin coating on all the places that may come into contact with the bottom surface of the luggage W, for example, the upper surface and the inner side surface of the carriage side frame 5a. The drive carriage roller 10A is made of metal such as iron, and its surface is provided with a non-slip coating such as silicon rubber. This coating also
As a stretchable tube, it is attached by heat shrinkage or the like.
In the illustrated example, the coating of the drive carriage roller 10A is
It is divided into a plurality in the longitudinal direction.

As shown in FIG. 5, the carriage roller driving device 29 comprises a bearing portion 29A and a driving portion 29B. The bearing portion 29A mounts the bearing 31 on the roller shaft 10c protruding from the end of each drive carriage roller 10A,
These bearings 31 are housed in a common bearing box 32 through which both roller shafts 10c pass. The bearing box 32 is installed on a mount 33 provided on the trolley-side frame 5a, and is divided into upper and lower parts by a horizontal dividing surface, and a fitting concave portion 34 of the bearing 31 is provided on the dividing surface. . The bearing box 32 can be opened and closed vertically around a support shaft 35, and a stopper 36 provided on the tip of the lower split bearing box so as to be tilted and tilted is engaged with a recess at the tip of the upper split bearing box. It is held in the closed state by fitting them together and tightening them with the screw portion of the stopper 36. The reference numeral 5c in the figure indicates a connecting member for connecting the bogie side frames 5a on both sides. Carriage roller driving device 29
The drive portion 29B is provided with a gear 37 at the tip portion of each roller shaft 10c protruding from the bearing box 32, and these gears 37 are meshed with a common drive transmission gear 38 from above. The drive transmission gear 38 is rotatably supported by the mount 33, and meshes with the output gear 40 of the drive source 39 obliquely downward. The drive source 39 is composed of a motor 41 provided with a speed reducer 42, and the speed reducer 42 has an output shaft orthogonal to the motor shaft.

FIG. 4 shows the scooping alignment device 11 and the clamp device 12 in the step-down unit 1. Aligning device for scooping 1
The upper stopper 13 of No. 1 and the lower stopper 15 of the clamp device 12 are movably supported by guide members 46 and 47 such as slide bearings via a plurality of guide rods 44 and 45 protruding to the back surface, respectively. It is driven back and forth by forward and backward drive devices 48 and 49 such as cylinders. The guide members 46, 47 and the advancing / retreating drive devices 48, 49 are installed on the installation base 43 of the main body frame 3 via an appropriate mount.

The shutter 14 is attached to the lower end of a vertical shaft 52 which is supported on the advancing / retreating member 50 through a guide member 51 such as a slide bearing so as to be able to move up and down, and is moved up and down by a shutter opening / closing device 53. The advancing / retreating member 50 is
In the shutter support frame 60 installed on the main body frame 3,
It is installed so as to be able to move forward and backward through a guide rod 54 and a guide member 55 such as a slide bearing, and is driven forward and backward by a shutter forward and backward device 56 such as a cylinder.

The stopper 16 on the carriage entry side of the clamp device 12 is divided into a plurality of unit stoppers 16a to 16c arranged in a direction orthogonal to the carriage traveling direction, and the unit stoppers 16a to 16c are individually advanced and retracted. A stopper advancing / retreating device 57 is provided. Each unit stopper 16a to 16c
Has a plurality of guide rods 58 protruding from the back surface, and is supported so as to be able to move back and forth through the guide rods 58 and guide members 59 such as slide bearings.
The unit stopper advancing / retreating device 57 is composed of a cylinder and is arranged between the guide rods 58 on both sides. The unit stopper advancing / retreating device 57 and the guide member 59 are installed on the main body frame 3. Each unit stopper advancing / retreating device 57 is a rod-shaped member extending in the arranging direction, and a cushion member is attached to the luggage contact surface.

The shutter 18 of the stacking section 2 in FIG.
4 is moved up and down by the shutter opening / closing device 61 and moved forward / backward by the shutter advancing / retracting device 62, similarly to the shutter 14 on the step-down section side in FIG. In addition, the stopper 1 of the stacking section 2
7 is advanced and retracted by a stopper advancing and retracting device 63 including a cylinder or the like.

The operation of the above configuration will be described. The load W on the pallet P1 on the side of the step-down unit 1 in FIG. 1 is, for example, a cardboard box that stores canned beverages, and the load W is placed on a conveyor (not shown) preceding the conveyor 6 by type. A plurality of pallets P1 are sequentially arranged and made to stand by. The layers of the stacked packages W are adhered to each other with a hot-melt adhesive (not shown) so that the packages do not collapse during transportation. The pallet P2 on the stacking unit 2 side is a pallet prepared for each shipping destination.

As shown in FIG. 6 (A), when the stacked pallets P1 are conveyed by the carry-in conveyor 6 to the predetermined position of the stacking section 1, the carry-in conveyor 6 is stopped and the lift table device 7 is operated. Raise to lift the pallet P1 of the carry-in conveyor 6. When the uppermost luggage W reaches the height of the carriage 5 as shown by the chain line, the lifting of the lifting platform device 7 stops. After this stop, as shown in FIG. 6B, the upper stopper 13 of the scooping alignment device 11 and the lower stopper 15 of the clamp device 12 are scooped.
Moves forward to a predetermined position where it hits the luggage W, the shutter 14 descends to the closed position and moves forward, and the clamp device 12
The pusher side stopper 16 moves forward. This allows
The uppermost load W is sandwiched between the upper stopper 13 and the shutter 14, and the second load W from the top is clamped by the clamp device 12.
It is sandwiched between the lower stopper 15 and the pusher side stopper 16.

In the clamped state as described above, the carriage 5 waiting on the stacking section 2 side travels to the stacking section 1 side while rotating the leading drive carriage roller 10A upward. When the drive carriage roller 10A hits the side surface of the uppermost load W, the frictional force due to the rotation of the drive W causes the load W to move.
Are picked up and placed on the carriage 5 as the carriage 5 travels (FIG. 6 (C)). Since the uppermost luggage W is sandwiched by the aligning device 11 during scooping, the luggage W is not pushed by the carriage 5 and escapes, or the packing appearance does not collapse. At the time of scooping up, the adhesive that adheres the layers of the luggage W is peeled off and rubbed against each carriage roller 10 and each part of the carriage 5, but the carriage roller 10 and the chute 30
Is covered with a resin coating 10b or a coating layer of a fluororesin, the adhesive property prevents the adhesive from adhering to the carriage roller 10 or the like due to the property of the resin. Therefore, the frequency of cleaning or replacement of the carriage roller 10, chute 30, etc. can be reduced.

Further, when the luggage W is picked up by the carriage 5, the second-stage luggage W, which is the lower layer of the scooping layer, is sandwiched by the clamp device 12, so that the load does not collapse. Further, it is prevented that the position and the posture of the second-stage luggage W are disturbed and the entrance of the carriage 5 is hindered, and the scooping is performed smoothly. Since the pusher-side stopper 16 of the clamp device 12 is divided into a plurality of parts, the stopper 16 shown in FIG.
Even when there is a gap d between the loads W in some rows as shown in FIG. 7A, as shown in FIG.
The loads W are clamped for each row at 6a to 16c, and are clamped without a gap. Therefore, a reliable clamp can be performed,
The carriage 5 can smoothly pick up the luggage W. Further, not only when there is a gap between the loads W, but also when the lengths of the rows of the loads W are different, by pushing the loads W for each row by the split stoppers 16a to 16c, A reliable clamp can be performed.

After the luggage W has been scooped up by the carriage 5, the upper stopper 13 of the aligning device 11 at the time of scooping retracts and the shutter 14 retracts to the upper position as shown in FIG. 7 (A). The carriage 5 opens and runs backward to the stacking unit 2 side. Further, the lower stopper 15 and the pusher-side stopper 16 of the clamp device 12 are retracted to release the clamp and prepare for the next lifting of the load W. When the carriage 5 travels to a predetermined position on the stacking unit 2, the dismounting and aligning device 1 is stopped after traveling.
The luggage W on the carriage 5 is sandwiched by the shutter 18 and the stopper 17 of 9 (FIG. 7B). In this state, the carriage 5 passes under the shutter 18 and travels toward the step-down unit 1, so that the cargo W on the carriage 5 is stopped by the stopper 17 and is discharged onto the pallet P2. While the carriage 5 is located in the stacking section 2, the lifting platform device 7 is raised by one stage of the load W at the stacking section 1, and the scooping aligning device 11 and the clamping device 12 are operated in the same manner as described above. Stand by with the luggage W in between. Therefore, when the carriage 5 travels to the step-down unit 1 side for the purpose of clearing the luggage W, by continuing the traveling as it is, the next-stage package W of the step-down unit 1 is loaded.
Are picked up by the carriage 5 (Fig. 7 (C)).

In this way, the carriage 5 is reciprocated to take out the load W of the desired number of stages of the pallet P1 of the step-down unit 1.
The pallets P2 of the stacking unit 2 are stacked. The excess cargo W in the step-down unit 1 is unloaded from the lifting platform device 7 onto the carry-in conveyor 6 together with the pallet P1 and carried out from the subsequent conveyor (not shown).

In the above embodiment, the stacking section 2
Although the lifting platform device 9 is used as a loading platform and stacked on the pallet P2, the loading platform may be a conveyor, a carriage, or the like.

[0025]

In the carriage of the load handling apparatus according to the present invention, the carriage roller is provided with the resin coating, so that the hot melt adhesive for temporary fixing between the layers of the load is prevented from adhering to the roller surface, and the carriage is You can save the trouble of cleaning and replacing the rollers. When the chute of the carriage is provided with the fluororesin coating layer, the coating layer facilitates the smooth sliding down of the cargo and also has the effect of preventing the adhesion of the adhesive. Further, when the resin coating of the carriage roller is made of a stretchable resin tube, the processing is easy and the cost increase due to the formation of the resin coating can be suppressed.

[Brief description of drawings]

FIG. 1 is an overall front view of a load processing apparatus including a carriage according to an embodiment of the present invention.

FIG. 2 is a plan view of the package processing apparatus.

FIG. 3A is a perspective view showing a carriage and a traveling guide system of the same cargo handling apparatus, and FIG. 3B is a partially enlarged cutaway perspective view of a carriage roller thereof.

FIG. 4A is a perspective view showing a clamp device and each stopper of the load handling device, and FIG. 4B is a plan view showing a split stopper of the clamp device and its peripheral portion.

5A is a plan view showing a carriage roller driving device of a load handling device, FIG. 5B is a side view of the same part, and FIG. 5C is a cutaway side view of the same part.

FIG. 6 is an operation explanatory view of the load processing device.

FIG. 7 is an explanatory diagram of the operation of the load processing device subsequent to FIG. 6;

FIG. 8 is an operation explanatory view of a clamp device in the same load processing device.

[Explanation of symbols]

1 ... Stacking part, 2 ... Stacking part, 3 ... Main body frame, 4 ...
Rails, 5 ... Reciprocating carriage, 5a ... Bogie side frame, 7 ... Lifting platform device, 9 ... Lifting platform device (loading platform), 10 ... Carriage roller, 10b ... Resin coating, 10A ... Drive carriage roller, 28 ... Traveling device , 29 ... Carriage roller drive device, P1, P2 ... Pallet, W ... Luggage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Nishi Nishi 1-2-3 Moto-Akasaka, Minato-ku, Tokyo Suntory Ltd. Tokyo branch office

Claims (2)

[Claims] 1. A step-down section having a lifting platform device for placing loads in a stacked state, a stacking section having a loading platform arranged in parallel with the step-down section, and lifting of the stepping section. It is provided so that it can travel back and forth between the platform device and above the loading platform of the stacking unit, and enters between the layers of the cargo stacked on the stacking unit as it travels to the stacking unit side. In the load handling device provided with a carriage capable of picking up luggage, the carriage includes a pair of carriage side frames, a plurality of carriage rollers provided between the carriage side frames, and the step-down device. A carriage roller driving device that rotatably drives one or a plurality of carriage rollers from the top of the unit side in the direction for picking up luggage, and each carriage roller except the rotatably driven carriage rollers is made of metal and has its surface A resin coating to prevent the adhesion of hot melt adhesive A carriage for a cargo handling device characterized by being covered. 2. A chute is provided between the pair of bogie side frames on the rear end side of the arrangement of the carriage rollers, and a fluororesin coating layer is provided on the surface of the chute.
The carriage according to claim 1, wherein the resin coating of the carriage roller is a stretchable resin tube.