JPS602527A - Stacking device for trays and the like - Google Patents

Abstract

PURPOSE:To lift a conveyed load easily and surely without entailing any shock there as well as to make each stackable upon conveyance by means of a holding arm inserted into a concave part of a base plate. CONSTITUTION:When a tray T is conveyed up to a stopper position at the end of a base plate 71, a rotary mechanism is rotated and, after a crane body 80 is moved to the upper part of the tray T, a motor 80a of the crane body 80 is rotated, and a lifting shaft 82a of a tray holding part 82 is made to go down whereby each tip end of holding arms 82c and 82d of the tray holding part 82 is inserted into a long slit 71k of the base plate 71. Next, a cylinder 82e is operated, and an interval between these holding arms 82c and 82d is narrowed whereby the tray T is held, then the motor 80a is rotated, making the tray holding part 82 go up, and the crane body 80 is moved froward by rotation of the rotary mechanism, conveying the tray T and making it go down, thus it is placed on a main tray MT.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stacking device for stacking objects such as trays.

Generally, when heating or other processing is performed on articles such as mechanical parts during manufacture, it may be necessary to arrange the articles on trays or the like and stack the trays.

For example, in a powder metallurgy process, a powder compact compacted by a molding compactor is usually conveyed by a chute or a belt conveyor, and the powder compacts that are conveyed are usually flowed in rows. Therefore, when charging the green compact into the next process sintering furnace (gun sintering furnace), it is necessary to collect a large number of green compacts, and to do this, the compacted compact is placed on a tray. It is necessary to arrange them in multiple rows and stack these sheets 1/-. In this case, it is necessary to stack the trays without disturbing the arrangement of the green compacts that are aligned on the trays, but this operation requires procurement and is time-consuming.

The present invention has been made in view of the above circumstances, and provides a stacking device for trays and the like that can easily and reliably stack trays on which green compacts are aligned without disrupting the alignment of the green compacts. The purpose is to

The present invention will be specifically described below with reference to FIGS. 1 to 8.

First, the green compacts 1 are arranged on a tray (object to be transported) T,
To explain the overall configuration of the aligning and stacking device for stacking the trays T, this aligning and stacking device grasps the powder compact 1 sent from the left side in Fig. 1 and conveys it to the right side.
A powder compact (conveying device 3) that makes a large clockwise rotation on the transfer path 2 and places it on the transfer path 2, and a reversing device 4 that inverts the compact 1 that is being transferred on the transfer path 2. , a tray feeding device 5 that individually feeds the stacked trays T to the left with cylindrical protrusions Ta on the four corners, and a tray feeding device 5 that grasps the powder compact 1 on the transfer path 2. an alignment device 6 for aligning the trays conveyed by the tray gripper 5 in each line;
- a tray transport device 7 that transports the trays T on which the green compacts 1 are aligned on the upper surface to a predetermined position, and a tray stacking device (stacking device) that stacks the trays T transported by the tray transport device 7. It is composed of 8.

The conveying body 70 of the tray conveying device 7 is the base plate 7.
A conveyance plate 70a protrudes from a long hole 71a drilled in the base plate 71, and is attached to both ends of the conveyance plate 70a to support the base plate 71. .

The movable part 70b moves along a rail 71c provided on the frame 71b. 71e
It is provided so as to be movable in the left-right direction in FIG. 2 by means of a chain 71f provided therebetween. The sprocket 7im provided on l1I7111 of this sprocket 71d is connected via a chain 711 to the sprocket 7Th of a rotating mechanism 71g consisting of a reducer and an electric motor installed on the lower surface of the frame 71b (D). A long hole 71j is provided in the center of the base plate 71.
A stone puff 2c formed on the rod 72b of the cylinder 72a of the locking mechanism 72 installed on the lower surface of the base plate 71 emerges and retracts from this elongated hole 71j. There is. And cylinder 72
The inclination of the diston puff 2c formed on the frame 71h due to the expansion and contraction of the frame 71a is configured such that as it moves to the right in FIG. 2 along the first surface 71n, it falls downward. Furthermore, when arranging the green compacts l on the tray T, the transport plate 70a of the transport body 70 and the stopper 72c of the locking mechanism 72 are
It is configured such that the tray T is sandwiched and fixed between them. Reference numerals 73 and 74 are base bushes, which are stoppers provided on the door 1, and the conveyed trays T are configured to stop at the positions of these stoppers 73j74.

The crane body 80 of the tray feeding device 8 has rails 81 a and 81 a Vi laid on top of abutments 81 and 8L installed on the base plate 71, and sprockets 81 b provided at both ends of the rail 81 a.

The shaft 81 of the subblock 81c is configured to move in the left-right direction in FIG.
The sprocket 81f installed on the rail 81a is a rotating mechanism 81 consisting of a reducer and an electric motor installed on the right side of the rail 81a.
It is connected to the sprocket 81h of g via a chain 81i. The tray gripping portion 82 is provided so as to be movable up and down by an elevating shaft 82a connected to an electric motor 80a installed on the upper surface of the crane body 80 via a gear mechanism 80b. The sliding plate 82b attached to the upper part is connected to the V-
It is slidably provided on the contact body 80. The electric motor 80
When a rotates, the tray gripping part 82 moves up and down @82a.

The sliding shaft R2b of the tray gripping part 82 is configured to move up and down with respect to the l/-n body 80. Also,
At both ends of the tray gripping section 82, gripping arms 82c, 82 are provided.
d is attached, the gripping arms 82c and 82d are configured to move left and right in FIG. 7 by two cylinders 82eK provided at the center of the tray gripping portion 82. Additionally, a long hole (recess) 71k is provided in the base plate 71 opposite to the gripping arms 82c and 82d. Furthermore, in FIG. 6, a conveyor i*84 consisting of sprockets 84a, 84b and a chain 84c is installed on a frame 83 provided below the rail 81a, and a conveyor i*84 is installed at @84d of this sprocket 84a. sprocket 8
4e is a sprocket 84 of a geared motor 84g installed on the lower surface of the frame 83 via a chain 84f.
connected to h. The chain 84c is configured to move to the left in FIG. 6 along a support 841 provided on the frame 83. Here, MT
is a main tray for stacking trays T, and MT□ is a recess formed in the main tray p-MT.

Next, the operation of the stacking device for trays and the like according to the present invention will be explained.

First, a green compact 1 formed by a molding compressor is placed on a transfer path 2 by a compact conveying device 3, and its posture is reversed by a reversing device 4, and it arrives at the end of the transfer path 2. On the other hand,
fi) The tray T is fed to the tray feeding device 5 by the tray conveying device 7.
It is conveyed at position 1 of the stopper 73. Transfer passage 2
The green compacts 1 that have arrived at the end are aligned on the tray T by the aligning device 6 one by one.

Next, when the powder compacts 1 are aligned on the tray T, the tray T is sandwiched and fixed between the transport plate 70a of the transport body 70 and the stopper 72c of the locking mechanism 72, and the shape 7'C is locked. By retracting the cylinder 72a of the stop mechanism 72, the stopper 72ct=long hole 71 of the base plate 71.
It is released by lowering it from j. Then, when the rotating mechanism 71g is rotated, the rotation is caused by the sprocket 71h, the chain 711 . The conveyor 70 moves the tray T to the 21st
Move it to the right in the figure.

When the tray T is conveyed to the position of the stopper 74 at the end of the base plate 71, the one rotation mechanism 81g is rotated. Then, the rotation is transmitted to the shaft 81e via the sprocket 81h1 chain 811 and the sprocket 81f, and the crane body 80 is moved above the tray T by the sprockets 81c, 81b and chain 81d. Then, by rotating the electric motor 80a of the crane body 80 and lowering the elevating shaft 82a of the tray gripping part 82, the gripping arms 82c, 82 of the tray gripping part 82 are
The tip of d is inserted into the elongated hole 71 of the base plate 71. Therefore, the tray T is gripped by activating the cylinder 8'2e and reducing the distance between the gripping arms 82c and 82d. Next, the electric motor 80a is rotated,
Raise the tray gripping section 82. Then, the crane body 80 is moved to the left in FIG. 25 by rotating the rotating mechanism 81g. When the crane body 80 moves and comes over the main point II<, -MT, the electric motor 80a is rotated. , lower the tray gripping part 82, and remove the main tray, -MT.
Place the tray T on top. Return this action to main t.
, ; - When the trays T are stacked on the MT to a predetermined height, the guard motor 84g is rotated. This rotation is caused by sprocket 84h, chain 84f1, sprocket 8
4e, the sprocket 84 is transmitted to the shaft 84d.
a e 84 b maint J by b chain 84c
, tMT moves to the left. Then, stack the tray T on the mage) 11/-MT, and finally the maint goods -M
When the trays T are completely stacked on the maint, the maint is sent to the next process.

Although the tray T is conveyed by the conveyor 70 in this embodiment, the tray T is not limited to this, and may be conveyed by a conveyor such as a belt, roller, or chain. Moreover, it goes without saying that the main point v-MTij: conveyed by the chain 84c may be conveyed using a roller conveyor.

As explained above, the present invention is provided with a gripping arm that is inserted into the recess of the base plate and grips the objects to be transported, so that the objects can be easily and reliably lifted, transported, and stacked without giving any shock to the objects. be able to.

Therefore, the arrangement of objects such as powder compacts arranged on the object to be conveyed will not be disrupted or objects may be dropped, and this has an excellent effect of promoting labor saving by eliminating the need for manpower. .

[Brief explanation of the drawing]

Figures 1 to 8 show one embodiment of the present invention.
The figure is an overall view showing the overall configuration of the alignment and stacking device, Figure 2 is a sectional view of the tray conveyance device, Figure 3 is a sectional view of the tray conveyance device, and Figure 4 is a cross section taken along the line ■■ in Figure 2. Figure 5 is a sectional view taken along the line ■-■ in Figure 2, Figure 6 is a side view of the tray stacking device, Figure 7 is a sectional view of the tray stacking device, and Figure 8 is a compacted powder FIG. 3 is a plan view showing the tray in a state in which the trays are aligned. T......tv-1 conveyed object), 7 l...
...Base play 1.71k...Long hole (concave part), 8o, old...7 clays, 8ra...Rail, 82...Tray grip, 82c ,82d・
...Gripping arm.

Claims (1)

[Claims] A rail is provided above the base plate on which objects to be transported such as trays are placed, and a crane body is provided on this rail so as to be movable in the horizontal direction. A stacking device for trays, etc., characterized in that the tray gripping section is provided with two gripping arms that are inserted into the recesses of the base plate and move horizontally to grip the objects to be transported.