JPH0540225U - Pallet loading device - Google Patents

Abstract

(57) [Abstract] [Objective] The present invention relates to a pallet loading device for stacking a plurality of pallets on which work is placed. The robot can be loaded into and unloaded from a pallet with a small space, and is a robot. The purpose is to be able to take a large operating range of the arm. [Arrangement] At least two or more pallet loading devices capable of stacking a plurality of pallets for mounting work are arranged in parallel, and at least one pallet holding device is provided with a pallet gripping device on top of another pallet. The pallet gripping device and the lifter for moving the pallet up and down are arranged below each of the pallet stacking devices so that the pallet gripping device can be moved back to the original position. A conveyor for conveying pallets is arranged below.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pallet loading device capable of stacking a plurality of pallets on which works are placed.

[0002]

[Prior Art]

 A conventional pallet placing device will be described with reference to FIG. A first pallet stacking device 103, in which a plurality of pallets 102 are arranged on the upper surface of the base 101, and a second pallet stacking device 105, which conveys and stores the pallet 102 by a conveyor 104, have an interval (work station). 106) is arranged.

To explain the operation, first, one pallet 102 is discharged from below the first pallet stacking device 103, and the pallet 102 is positioned at the work station 106 by the rotation of the conveyor 104. At the work station 106, when various work (placement of work on pallet: packing, unloading work in pallet, etc.) is completed, the conveyor 104 is rotated again and the pallet 102 is moved to the first position. When it reaches below the second pallet loading device 105, the conveyor 104 stops. When the conveyor 104 is stopped, the pallet 102 is stored inside the second pallet stacking device 105 by a lifter (not shown).

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, not only the first pallet loading device 103 and the second pallet loading device 105 are arranged with a space therebetween, but also the work station is provided between each pallet loading device 103, 105. Since the option 106 is provided, a considerable space was needed.

In addition, a robot (not shown) is usually installed in the work station 106 to carry in and carry out the work. However, since the pallet loading devices 103 and 105 are provided on the left and right sides of the work station, the robot is carried out. There was a problem that the rotation range of the arm was restricted.

[0006]

[Means for Solving the Problems]

 The present invention is intended to solve the above-mentioned problems, and at least two or more pallet loading devices capable of stacking a plurality of pallets for mounting work are arranged in parallel, and at least one or more pallet loading devices are arranged. Arrange the pallet gripping device above the palletizing device so that it can be moved back to the other pallet stacking device and return it to its original position. And a conveyor for carrying pallets under the pallet gripping device.

[0007]

【Example】

 In the frame 1, a first pallet loading section 3 and a second pallet loading section 4 on which several pallets 2 are loaded are arranged. An upper gripping device 5 and lower gripping devices 6, 7 for gripping and positioning the pallet 2 are provided on the upper surface of the first pallet stacking part 3 and below the first and second pallet stacking parts 3, 4. It is attached to frame 1. Next, the upper gripping device 5 and the lower gripping devices 6 and 7 having substantially the same configuration as the upper gripping device 5 will be described with reference to FIGS. 4 and 5.

The slide rails A and B mounted on the frame 1 are provided with a base C which is engaged with the slide rails A and B and is moved by an air cylinder or the like. Grasping claws 8 and 9 for grasping the pallet 2 in the longitudinal direction are opposed to each other on the table C and linearly slidably attached to each other by guide members 10, 11, 12 and 13.

Further, drive sources (air cylinders) 14 and 14 ′ for opening and closing the grip claws 8 and 9 are attached to the frame 1, and the cylinder rods 15 and 16 of the air cylinders 14 and 14 ′ are attached to the drive sources. It is fixed to the respective gripping claws 8 and 9 via the floating joints 17 and 18.

Reference numerals 19 and 20 are air cylinders for positioning the pallet 2 in the direction perpendicular to the longitudinal direction by bringing the pallet 2 into contact with the stepped portions 8a and 9a formed at one end of the gripping claws 8 and 9, respectively. An elastic member 22 is covered on the rod tips of the air cylinders 19 and 20 (installed only in the upper gripping device 5 in this embodiment) so as not to damage the pallet 2.

The pallet 2 is moved from the second pallet loading section 4 to the first pallet loading section 3 below the first and second pallet loading sections 3 and 4 (below the lower gripping devices 6 and 7). A conveyor chain 23 for arranging and discharging the excess (excess) pallet 2 is arranged. The conveyor chain 23 is connected to a rotary drive source 24 via a transmission member 25 such as a chain or belt.

Below the conveyor chain 23, lifters 26 and 27 for raising and lowering the pallet 2 are arranged. The lifter 26 has a rack-and-pinion system in order to minimize the installation length. Reference numerals 28 and 29 are rotary drive sources for moving the lifters 26 and 27 up and down.

Next, the operation will be described. First, the pallet 2 is loaded on the first and second pallet loading sections 3 and 4, and the pallet 2 is also gripped by the upper gripping device 5, and the air cylinders 19 and 20 perform positioning. Here, the finished product etc. is packed in the top pallet 2 with a robot. When the packing is completed, the upper gripping device 5 moves to the upper part of the second pallet stacking unit 4. After the movement, the lifter 27 rises, and when the uppermost pallet 2 of the second pallet stacking unit 4 comes into contact with the pallet 2 held by the upper holding device 5, the air cylinder 14 of the upper holding device 5 is moved. , 14 'are actuated and the pawls 8 and 9 are opened to open the pallet 2.

Next, the upper gripping device 5 is retracted, or while the lifter 27 is lowered. The lower gripping device 7 operates just before the end of the lowest descent, and holds the pallet 2 in the second stage from the lowermost stage. After the lifter 27 has finished descending to the lowest position, the conveyor chain 23 rotates to convey the pallet 2 to the lowermost stage of the first pallet stacking unit 3 (the pallet of the first pallet stacking unit 5 is previously moved to the lower part). It is gripped by the gripping device 6 and lifted higher.

After the conveyance is completed, the lifter 26 is lifted at the same time when the lower gripping device 6 is released from gripping, and the uppermost pallet 2 of the first pallet stacking unit 3 is lifted to the position of the upper gripping device 5.

By repeating the above operation, the work is packed in the pallet 2 arranged in the first and second pallet stacking units 3 and 4. After the work is stored in all the pallets, the pallet loading sections 3 and 4 are replaced with new ones.

[0017]

[Effect of the device]

 According to the present invention, at least two pallet loading devices capable of stacking a plurality of pallets for mounting work are arranged in parallel, and at least one pallet holding device is provided above the pallet device. The pallet loading device and the lifter for moving the pallet up and down. Since a conveyor for pallet transportation is arranged below the pallet gripping device, work can be carried in and out of the pallet with a small space, and the operating range of the robot (arm) can be widened. be able to.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a top view of FIG.

FIG. 4 is a plan view of an upper grip device.

FIG. 5 is a front view of FIG.

FIG. 6 is a front view of a lower gripping device, a conveyor, and a lifter.

FIG. 7 is a schematic front view of a conventional device.

[Explanation of reference numerals] 1 frame 2 pallet 3 first pallet loading section 4 second pallet loading section 5 upper gripping device 6 lower gripping device 7 lower gripping device 8 gripping claw 9 gripping claw 10 guide member 11 guide member 12 Guide member 13 Guide member 14 Air cylinder 14 'Air cylinder 19 Air cylinder 20 Air cylinder 23 Conveyor chain 26 Lifter 27 Lifter

Claims (1)

[Scope of utility model registration request] 1. At least two pallet stacking devices capable of stacking a plurality of pallets for mounting a work in parallel.
In addition to arranging more than one pallet, a pallet gripping device is arranged above at least one pallet device so that it can be moved to another pallet loading device and returned to its original position. A pallet stacking device comprising a gripping device and a lifter for moving the pallet up and down, and a conveyor for transporting the pallet below the pallet gripping device.