JPH08282846A - Palletizer - Google Patents

Abstract

PURPOSE: To perform a load handy-ing with a small-space by providing a support lever which sucks and lifts a container to a movable frame provided facing from a conveyor to a frame, providing sucking devices on the support frame, and also providing a device for adjusting the intervals between the sucking devices according to the sizes of containers. CONSTITUTION: A support lever 21 is installed on a guide tube 19 which is lifted along a guide frame 20 provided on a movable frame capable of traveling on a rail 29, and the support lever 21 is lifted with a lifting screw 31. Also the support lever 21 is provided with a rotating adjusting screw lever, and sucking devices are screwed into screws with different pitches of the adjusting screw lever so that distances between the sucking devices can be adjusted. Then the sucking device of a support lever 21 for lifting a container 7 can be moved to a specified position of the support lever 21 according to the size of the container 7, and can be placed easily on a specified pallet 6 even for containers of different sizes. Thus the containers 7 can be loaded successively front the uppermost pallet 6 of a specified number of pallets 6 carried in and loaded on a frame 5 beforehand, and the time for load handling can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a palletizer for loading products and the like on a pallet, and more specifically, it is filled with chemical products such as paints in a high-mix low-volume production system and chemical products treated as dangerous substances. The present invention relates to a palletizer most suitable for loading containers such as 1-to and 16-liter cans (hereinafter abbreviated as containers) on a pallet.

[0002]

2. Description of the Related Art Recently, various demands have been diversified and individualized, while various regulations have been relaxed. We are working to cultivate new demand by switching to the low-volume type production method and multi-variable variable-volume production method as well as further cost saving, efficiency and automation to reduce costs to the limit. Therefore, not only is each company rationalized and streamlined in the production process, but in order to further streamline and streamline the logistics activities such as transportation, storage, and cargo handling, various products, cargoes, etc. are unit-loaded and mechanized cargo handling. We are proceeding with consistent transportation and storage and effective use of land. As a result, a carrier or transfer device for unloading and loading products and cargo, a palletizer for loading products and cargo on pallets, a depalletizer for unloading products and cargo loaded on pallets, or an unmanned warehouse, etc. The development of cargo handling equipment has progressed considerably. However, in most cases, most of these cargo-handling-related devices are used for cargo-handling work such as products and cargoes of almost the same standard that are continuously carried in and out, and are also used in explosion-proof areas. Few possible cargo handling equipment existed. Figure 6 is a typical large amount of conventional
It is a schematic diagram which shows the process of the cargo handling work which carries in / out a product, a cargo, etc. in a continuous production system. In the figure (7)
Is, for example, a container filled with product, (6) is a pallet,
(34) is a product carry-in conveyor, (35) is a palletizer for loading a predetermined amount of containers (7) on a pallet (6) by a predetermined method, and (36) is an empty pallet (6) carried by, for example, a forklift. Is a dispenser for sequentially feeding the sheets to the palletizer (35) through the carry-in conveyor (37), and (38) is a product carry-out conveyor.

The container (7) moves to the vicinity of the palletizer (35) through a product carry-in conveyor (34) communicating with the manufacturing process, and the pallet (6) fed to the palletizer (35) for one sheet by the dispenser (36). ) Is loaded with the palletizer (35) on the container (7) in a predetermined manner, and when a predetermined amount is loaded, the pallet (6) on which the container (7) is loaded is transferred to the product unloading conveyor (38) to, for example, a product warehouse. It will be shipped to.

[0004]

Therefore, in the case of the cargo handling related apparatus as described above, a considerably large space is required and the equipment becomes large-scale. In addition, when the standard / size of the container is changed or the size of the pallet is changed, it is necessary to considerably change the method of a series of cargo handling operations, and the time required for this cannot be ignored. Therefore, the quantity is not so large, and the above method is not suitable for cargo handling work such as handling containers having many kinds. Recently, it has become difficult to secure workers involved in cargo handling work that requires physical labor, so we have promoted mechanization further while reducing the side where we have to rely on manual work as much as possible. There was a need to develop a palletizer that can be easily handled in cargo and that can be used in explosion-proof areas. The present invention has been invented in view of the above problems, and although it is a large variety, it is suitable for cargo handling work in which a container filled with a product in which the amount of one lot is not so large is used, and in a small space. The purpose is to obtain a palletizer that can complete a series of cargo handling work and can also be used in the explosion-proof area as needed.

[0005]

SUMMARY OF THE INVENTION The present invention provides the following palletizer in order to achieve the above objects. That is, a conveyor for loading containers is provided adjacent to a gantry on which a pallet for loading containers is placed,
Provided with a movable frame movable from the conveyor toward the gantry, the movable frame is provided with a vertically movable support rod for adsorbing and lifting the container, and the supporting rod is provided with a suction tool for adsorbing the container, A palletizer provided with a device capable of adjusting the distance between the suction tools according to the size of the container.In such a palletizer, screws of different pitches are arranged on the adjusting screw rods provided on the support rods, and each of these screws is arranged. A guide tool of the suction tool is screwed, and a device for adjusting the distance between the suction tools is configured.

[0006]

The container is filled with the product by the filling device which is the previous step of the present apparatus, and the filled container is carried into the palletizer by the conveyor and positioned at a predetermined position. The suction device that lifts multiple containers is positioned according to the size of the container, then descends to adsorb the containers with the suction device, lifts and moves, and then moves on the top pallet that is placed on the palletizer pedestal in advance. A predetermined amount of containers are loaded in a predetermined manner, and when the loading is completed, the pallet is carried out of the system by, for example, a forklift, and then the containers are sequentially loaded on the pallet of the next stage.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in the drawings. FIG. 1 is a plan view of the palletizer of the present invention, and FIG. 2 is a side view of the palletizer of the present invention. In the figure, (7) is a container, (6) is a pallet, (1) is a carry-out conveyor having side walls on both sides, which communicates with a filling process for filling a product with a container, and (2) is a carry-out conveyor (1). A carry-in conveyor having side walls on both sides, which is laid in the palletizer of the present invention by bridging with the tip, and (3) is a stopper attached to the tip of the carry-in conveyor (2). Sensors (4) are attached to both sides of the rear end of the carry-in conveyor (2), and when a container enters the conveyor (2), the sensor detects the cylinder and the cylinder (39) operates, and the tip of the conveyor (2). 5, the rod (40) is shortened and lowered to tilt the carry-in conveyor (2), and the roller at the front end of the carry-in conveyor (2) is driven to naturally move the container toward the leading end of the carry-in conveyor. When the container comes into contact with the stopper (3) attached to the tip of the carry-in conveyor (2),
Detecting this, the rod (40) of the cylinder (39) extends, the carry-in conveyor (2) returns to its original state, the driving of the roller (41) also stops, and the next container is received. . When the next container enters the carry-in conveyor (2), the sensor (4) detects again and the cylinder (3
9) is activated, the tip of the conveyor (2) is lowered by shortening the rod (40) thereof, the carry-in conveyor (2) is tilted, and the roller at the rear end of the carry-in conveyor (2) is driven to make the container natural. When the carry-in conveyor (2) moves to the front end and hits the container in front, the sensor (4a) corresponding to this detects and detects the rod (4) of the cylinder (39).
At 0), the carry-in conveyor (2) returns to the original state, the driving of the rollers is stopped, and the next container is received. When a predetermined number of containers, for example, four containers are arranged in parallel by repeating this operation, a stopper (not shown) located at the rear end of the carry-in conveyor (2) is operated to prevent a subsequent container from entering the carry-in conveyor (2). To do. The inclination of the carry-in conveyor (2) as described above continues until the four containers are arranged side by side, and when the sensor (4) detects the four containers, the cylinder (39) operates and the carry-in conveyor (2) becomes horizontal. It is also possible to stop the driving of the roller and to activate the stopper for preventing the subsequent container from entering, while returning to the above.

Reference numeral (6) is a pallet that is carried by, for example, a forklift and placed in advance on a rack (5) in a predetermined number. (11) is two columns (9) and (10)
A groove portion (17) is formed on the arm (11) as shown in FIG. 2 by an arm horizontally provided on the top of the movable plate (14) so that the lower convex portion (16) of the moving plate (14) can move freely. It is fitted. A screw rod (12) is provided horizontally above the arm (11) in parallel therewith, and a vertical wall (15) of the moving plate (14) is screwed to this, so that the motor (13) on the column (10). Drive the screw rod (12) to move the moving plate (14) movably. (8) is a moving frame in which a plurality of wheels (30) attached to the legs are fitted to rails (29) laid parallel to the screw rods (12) facing the columns (9) and (10), On the top of the moving frame (8), a moving plate (14) is projected toward the arm (11), and as described above, the moving plate (14).
The vertical wall (15) of the screw is screwed into the screw rod (12). In addition, (14a) is an upper moving plate that is provided to project on the moving frame (8) together with the moving plate (14), and is fixed to the moving plate (14) by the standing wall (15).

Reference numeral (21) is a support rod shown in FIG. 4 having a substantially square cross section which is provided on the movable frame (8) below the movable plate (14) and is provided at the center of the bottom of the support rod (21). Has a linear cut (25) in the longitudinal direction. (22)
Is a cylindrical guide fixed to the body of the suction tool (23),
The groove (24) is provided with a notch projection (2) of the support rod (21).
5) is fitted. A movable block (27) is fixedly installed above the guide tool (22), and an adjusting screw rod (26) is fixed to the movable block (27).
Are screwed together, and the adjusting screw rod (26) can be rotated by a motor (28) arranged on the support rod (21). The adjusting screw rod (26) is formed by continuously arranging screws having different pitches over a predetermined length, for example, 1: 2.
It is designed with a pitch ratio of 3 to 4. The moving block (27) of each suction tool (23) is screwed into these screws, and when the motor (28) is operated, each suction tool (23) is moved.
Move and the spacing between the aspirators is adjusted. Therefore, when the size of the container is determined, the motor (28) is actuated to rotate the adjusting screw rod (26) to move the suction tool (23) right above the center of the container (7) to lower the container (7). 7) is sucked and lifted up, and the groove (24) of the guide tool (22) fixed to the body of the suction tool (23) has a support rod (2).
Since it is fitted to the convex portion (25) of (1), the support rod (2
1) is designed to have sufficient strength to withstand the weight of the container to be lifted. In the embodiment, four suction tools (23) are provided in parallel, but the number, shape, etc. of suction tools are not particularly limited. Reference numeral (33) shown in FIG. 2 is a sensor for detecting a container attached to the bottom of the end of the support rod (21). Further, (18) is a positioning frame provided on the frame. It goes without saying that the suction tool (23) is connected to an intake device (not shown).

Next, the moving frame (8) will be described in detail with reference to FIG. 3. The wheels (30) attached to the legs of the moving frame (8) are fitted on the rails (29) and can travel freely. ,
As described above, the screw rod (12) is screwed to the standing wall (15) of the moving plate (14) protruding from the top of the moving frame (8), and the moving frame (8) is moved left and right by the motor (13). You are free. Reference numeral (32) is a lifting motor arranged on the top of the moving frame (8), and reference numeral (31) is a lifting screw vertically connected to the motor (32) and screwed to the support rod (21).
(19) (19) is a guide tube standing on both sides of the lifting screw (31) and fixed on both sides of the support rod (21).
By driving 2), the support rod (21) is raised and lowered by the raising and lowering screw (31), and the guide cylinders (19) and (19) are also raised and lowered in synchronization with the guide rod (20).

Therefore, when the motor (13) is operated, the screw rod (12) rotates, and the standing wall (15) of the moving plate (14) projecting from the moving frame (8) is screwed with the screw rod (12). As a result, the movable rod (8) reciprocates horizontally on the rail (29), and when the motor (32) is operated, the lifting screw (31) rotates and the support rod screwed to this. Since (21) vertically moves up and down along the guide rods (20) and (20), the support rod (21) integrally moves with the moving frame (8) and moves horizontally, and the lifting screw (3)
A plurality of suction tools (23) descending at 1) and adjustably provided on the support rod (21) come directly above a plurality of containers (7) waiting on the carry-in conveyor (2). Then, the upper surface of the container is adsorbed and lifted up, and the container is moved to just above the uppermost pallet (6) placed on the pedestal (5),
It descends to release the suction of the suction tool (23) and transfer the container.

The palletizer according to the present invention is constructed as described above, and its operation will be described below. For example, 20 kg of paint is filled in a 1-ton can of size 240 x 240 x 350H, and 4 rows x 5 rows = 1 row on the pallet.
The palletizing in the case of stacking 20 cans of 3 layers and shipping them will be described. Since the size of the pallet for one-tower canning is determined to be 1050 × 1300, first, four pallets of the above size are placed on the rack (5) at a predetermined position with a forklift. In this embodiment, since the maximum production amount of one batch is about 4 tons, when four pallets are loaded on the pallet by the above method, one pallet has three stages and 1200 kg. Therefore, four pallets are sufficient. The sizes of the container and the pallet of the one-tower can, the center position of the upper surface of the container of the one-tower can, the number and the number of the containers to be loaded on one stage of the pallet, and the like are input in advance to the CPU. In the filling step, a predetermined amount of paint is filled in the one-tower can, a label is attached to the side wall of the can, and the can is sequentially carried into the carry-in conveyor (2) by the carry-out conveyor (1). When the can enters the carry-in conveyor (2), the cylinder is detected by detecting it, and the leading end of the carry-in conveyor (2) is lowered by the cylinder (39).
Tilts and the can flows naturally, stopping at the stopper (3). When the can comes into contact with the stopper (3) and stops, the carry-in conveyor (2) returns to the original horizontal state, and when the second can enters the carry-in conveyor (2), the carry-in conveyor (2) is carried out in the same manner as above. Tilts and the cans flow through the carry-in conveyor (2) and stop alongside the first can. Predetermined number, eg 4
When the cans of the book are arranged in parallel with the carry-in conveyor (2), the sensor (4) is actuated and the stopper (not shown) at the rear end of the carry-in conveyor (2) is actuated, and the subsequent cans are carried in the carry-in conveyor (2). Prevent access to. Next, the motor (32) is operated to rotate the lifting screw (31) to lower the support rod (21) in which the suction tool (23) is inscribed, along the guide rods (20) (20). Each suction tool (23) descends to the center of the upper surface of the can, and when the center is pressed and sucked by each suction tool (23), the can is sucked by the suction tool (23). When each of the four suction tools (23) sucks the can, the motor (13)
And the motor (32) are operated to support the rod (21).
The suction tool (23) that holds the can because the sensor (33) detects the position of the pallet.
Reaches a predetermined position directly above the pallet (6), gently places the can on the pallet (6), stops the suction device of the suction tool (23), and releases the suction between the suction tool and the container. To do.

Since the support rod (21) suspends four cans in a cantilevered state, it is necessary to design and design the strength of the support rod when manufacturing the support rod. In the embodiment, four suction tools are attached to the support rod, but the number thereof is not limited. If six suction tools are attached to the support rod and four cans are suspended, the two suction tools may be left idle. After confirming that the four cans have been placed on the pallet, the motor (13) and the motor (32) are respectively operated in the opposite manner to return the suction tool (23) to the original position. Carry out the same operation as above to load four cans on the second row on the pallet, and then do the same for the first one on the pallet.
A total of 20 cans are loaded in a row with 4 cans in 4 rows in 5 rows. Then, in the same manner, stack 2 and 3 tiers, for a total of 20 tiers.
1 × 3 = 60 cans are loaded on the pallet. Since the sensor (33) detects the predetermined position of the pallet when loading the first-stage can and the position of the can at the end of the first stage when loading the second-stage can, respectively, Cans are loaded regularly and do not collapse. 6 total on pallet
When 0 cans are stacked in 3 stages, the pallet is moved from the mount to a predetermined position by, for example, a forklift, and 60 cans are placed on the second pallet placed on the mount in the same manner as above. Stack cans in 3 levels. In the present embodiment, the weight of one can filled with the product is 20 kg, so 60 cans / pallet × 4 pallets × 20 kg = 4800 kg. The production amount of products manufactured in this batch process is usually 4 to
Since it is 5t or less, four pallets to be placed on the gantry in advance are sufficient, but when the production amount is more than this, the required number of pallets are placed on the gantry. When there are cases where the number of pallets is increased, the height of the moving frame (8) needs to be equal to or more than the sum of the height of the number of pallets and the height of the cans to be loaded. When production of one batch is completed, batch production of the next product starts, but the size of the pallet and the can is selected according to the packing style of the product, the loading method is decided according to it, the condition is implied to the CPU, and necessary. By preliminarily placing a number of pallets on the gantry, the palletizing can be easily performed by the above method. In this embodiment, the suction tool attached to the support rod is movable by the adjusting screw rod, but the suction tool may be fixed to the support rod if the size of the container does not change, or the suction tool is manually operated. The position of may be changed.
Although the suction tool is hung from the support rod, a can with a lid or the like attached to the upper surface of the can cannot be adsorbed by such a suction tool, so a suction tool for adsorbing the side wall of the container is attached. I need to put it. In this embodiment, the palletizing of the can has been described, but the present invention is not limited to the can. In addition, the drive source of this palletizer uses an air motor, and the sensors have an intrinsically safe explosion-proof structure, so they can be used in an explosion-proof area. It is also possible to equip the gantry with wheels and fixtures, move the palletizer of the present invention to the container carrying-out conveyor, and connect it to the conveyor.

In summary of the above, the present invention provides claim 1,
In a preferred embodiment, a supporting rod is provided on a guide cylinder that moves up and down along a guide frame that is erected on a moving frame that can travel freely on a rail, and the supporting rod is driven by a motor. It is constructed so that it can be raised and lowered with a rotating lifting screw, and the support rod is provided with an adjusting screw rod that is further rotated by a motor, and the suction device is screwed to the screws with different pitches arranged on the adjusting screw rod. A palletizer that adjusts the spacing, and a suction tool attached to a support rod that sucks up and lifts a container can move to a predetermined position of the support rod according to the size of the container, and different standards and sizes Even containers can be loaded on a specified pallet in a specified manner with a simple operation, and the top pallet among the specified number of pallets that have been loaded and placed on the gantry in order Can be loaded with a container in a predetermined manner, it is possible to sell palletizer the time required for cargo handling is reduced.

Still another preferred embodiment is a palletizer provided with a wheel and a fixing device which are configured to be movable to the vicinity of a conveyor from which a container is carried out, and a driving source is an air motor. In addition, a palletizer that uses an intrinsically safe explosion-proof structure, such as a sensor, can be used even in an explosion-proof area, but the design can be changed arbitrarily within the spirit of the present invention. Is.

[0016]

The palletizer according to the present invention has a product loading conveyor and a gantry on which a pallet is placed in the apparatus.
Since a predetermined number of pallets are placed on the frame,
The lifting device, which consists of a support rod that can move horizontally and vertically, picks up multiple products carried by a product carry-in conveyor, moves them onto a pallet, and sequentially loads the products onto the top pallet. Since there is little work that requires manual labor, the time required for loading and unloading products is short, the equipment and space required for a series of loading and unloading work is minimal, and it is also possible to use it in an explosion-proof area. It can also be used for palletizing chemical products, etc., and can be moved up to the conveyor for carrying out containers, resulting in high investment efficiency and expected to significantly improve productivity. Palletizing in a high-mix low-volume production system Is a suitable palletizer.

[Brief description of drawings]

FIG. 1 is a plan view of a palletizer of the present invention.

FIG. 2 is a side view of the palletizer of the present invention.

FIG. 3 is a front view of the palletizer of the present invention.

FIG. 4 is a cross-sectional view of a suspension device portion including a support rod.

FIG. 5 is an explanatory diagram of a carry-in conveyor

FIG. 6 is an explanatory view showing a conventional device.

[Explanation of symbols]

 1 Carry-out conveyor 2 Carry-in conveyor 3 Stopper 4 Sensor 5 Frame 6 Pallet 7 Container 8 Moving frame 9 Pillar 10 Strut 11 Arm 12 Screw rod 13 Motor 14 Moving plate 15 Standing wall 16 Projection 17 Groove 18 Positioning frame 19 Guide tube 20 Guide rod 21 Support Rod 22 Guide tool 23 Suction tool 24 Groove 25 Convex part 26 Adjusting screw rod 27 Moving block 28 Adjusting motor 29 Rail 30 Wheel 31 Lifting screw 32 Lifting motor 33 Sensor 34 Carry-in conveyor 35 Palletizer 36 Dispenser 37 Carry-in conveyor 38 Product carry-out conveyor 39 Cylinder 40 rod

Claims (2)

[Claims] 1. A conveyor for loading a container is provided adjacent to a gantry on which a pallet for loading the container is placed, and a movable frame movable from the conveyor to the gantry is provided. A palletizer which is provided with a support rod which is sucked and lifted up and down, and which is provided with a suction tool for sucking a container, and a device capable of adjusting a distance between the suction tools according to the size of the container. 2. A device in which screws of different pitches are arranged on an adjusting screw rod mounted on a support rod, and guides of a suction tool are screwed into each of these screws, so that the distance between the suction tools can be adjusted. The palletizer according to claim 1, which comprises: