JPH03216404A - Lift - Google Patents

Abstract

PURPOSE:To reduce space of a working table by pushing up pallets stacked at the lower part of a lift body and loaded with semi-finished goods to a working plane by a lift chain, and carrying the pallets upward by a carrying chain when work is completed, and carrying the uppermost one of the stacked pallets up to the working plane by the carrying chain. CONSTITUTION:Semi-finished goods such as IC substrates, etc. are placed on pallet loading framed shelves of a pallet device 4, and the shelves are stacked and spaced at suitable intervals at the lower part of a lift body 1. After an operator installs an IC on the uppermost IC substrate, a carrying chain 21 is rotated, and one carrying-hook 26 formed on the chain are caught by the arm of an uppermost pallet 4 and pushed up. Then, a main chain 19 is turned, plural lift hooks 24 provided to the lift chain are caught by the arm of the stacked pallets 4, and the second pallet 4 is pushed up to a working plane. Since the lift hooks 24 are adapted to be turnable through 90 degrees clockwise, the lift hooks do not interfere with the upward movement of the pallets 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a lift, and more particularly to a lift that can perform assembly line work by raising and lowering a pallet device without applying vibrations.

2. Description of the Related Art Conventionally, assembly of parts, such as attaching semiconductor chips to a substrate, has been carried out on a suitable number of parallel belt conveyors that move laterally. In this case, several workers line up horizontally, and each worker performs a assigned task at a predetermined position on a moving workbench.

Problems to be Solved by the Invention In the above-mentioned work using the conventional belt conveyor system that moves laterally, it is necessary to install a large number of belt conveyor workbenches, which take up a lot of space, and the cost of land has increased in recent years. It was extremely uneconomical at the time.

Furthermore, if workers only work on a part of the products that are moved by the conveyor belt, even if work efficiency improves, the work of the workers becomes too simple and it is difficult to create a sense of competition in the work. The problem was that it was possible.

Means for Solving the Problems This invention solves the above problems and is composed of a base, an operation panel, a pallet device, and a pallet lifting means.
The operation panel includes a power supply device, a pallet feed switch, and a main lift up/down switch. The present invention relates to a lift characterized in that the pallet lifting means includes a main lift chain having a main lift hook and a transport chain having a transport hook.

Embodiment 2 shows the entire lift of the present invention, and the lift 1 is composed of a base 2, an operation panel 3, a pallet mount 14, and a pallet I to lifting means 5.

-F The base 2 forms the frame of the lift main body, and has an operation panel 3 erected at the front end of the base 2, and a back plate 6 erected at the rear end to fix pallet lifting means. Control panel 3
has a built-in power supply equipment 7, and this power supply equipment 7
This allows the pallet 4 to be moved up and down. 8 is a pallet feed switch, 9 is a main lift lift changeover switch, and 10
is an emergency stop switch. The pallet device 4 includes a pallet rack shelf 11 for placing pallets. It is formed of an arm 12 formed on the side of the pallet lifting means 5, a liner 13 and a pallet shelf guard 14 formed at both ends of the arm 12 to protrude in a direction perpendicular to the arm 12. In the pallet lifting means 5, a main lift motor 15 and a transport motor 16, which are connected to the power supply 7 of the operation panel 3, are fixedly formed on the back plate 6, and are connected to subrockets 17 and 18 through bevel gears, respectively. It is possible to rotate. A main lift chain 19 is fitted into the sprocket I7, and a driven sprocket 20 is formed at the other end. Further, a conveyance chain 21 is fitted into the sprocket 18, and a driven sprocket 22 is formed at the other end. The sprocket 17 is formed at the upper end of the lift body, and the driven sprocket 20 is formed at the lower end of the lift body. On the other hand, the sprocket 18 is located at the bottom rear surface when the pallet device 4 moves upward, and the driven sprocket 22 is located at the top rear surface when the pallet device 4 is positioned in the r direction. It is set up.

A protrusion 23 is fixed to the main lift l-chain 19 at an interval substantially equal to the interval between the upper and lower pallet apparatuses, and a main lift hook 24 is pivotally formed on the protrusion 23 so as to be rotatable at a fixed angle. ing. As shown in FIG. 5, when the main lift hook 24 is raised, the upper surface side of the main lift hook 24 is horizontal, but when it is lowered, it rotates clockwise due to the release of the locking means and the weight of its tip. .

The rotation angle is approximately 80 degrees. Projection part 23 and -
A sufficient number of soft lift hooks 24 are provided to raise and lower several pallet devices 4 -E.

Ikegata: The conveyance chain 21 is formed with one protrusion 25, and a conveyance hook 26 is pivoted to the protrusion 25 so as to be rotatable at a certain angle in the same manner as the upper main lift hook 24. . Main lift chain 1 above is subrocket 17
, 20 will be reciprocated, and the conveyance chain 21 will also be reciprocated in relation to the conveyance hook 26. When the transport hook 26 moves downward,
Similar to the main lift hook 24 described above, the arm 12 causes the transport hook 26 to rotate clockwise, allowing that portion to be lowered to a predetermined position.

Linears 13 are formed to protrude perpendicularly from both ends of the arm 12, and are fitted onto shafts 27 vertically disposed on both sides of the pallet lifting means 5. It is possible to move the pallet device 4, which is raised and lowered by the hook 26, without giving any movement.

Further, reference numeral 28 denotes an optical sensor, which is arranged on which side of each of the hooks 24 and 26 of the main lift chain 19 and the transport chain 21, and controls the transport distance of the hooks 24 and 26.

To explain the operation of the embodiment, semi-finished products such as IC boards are placed on the pallet rack of the pallet device 4, and these products are stacked at predetermined intervals below the lift main body. It will be done. The worker installs the IC on the snow at a predetermined position on the product such as an IC board located at the top, and when a predetermined amount of work is completed, pushes the product such as the IC board upward.

To push up the IC board, etc., by rotating the conveyance chain 21, one conveyance hook 26 formed on the conveyance chain 21 is moved to the arm 12 of the pallet device 4.
hook and move it upwards. When the pallet device 4 is moved upward, the main lift hooks 24 formed in the main lift chain 19 are moved by the arms 12 from below, so each main lift hook 24 rotates clockwise. , does not obstruct the upward movement of the pallet device 4.

Next, the worker will work on the second IC board, etc., but in order to do so, by rotating the main lift chain 19, the main lift hook 24 formed thereon will be attached to the pallet device. 4's arm 12 is pushed up from below, and the entire pallet device 4 becomes one pallet device 4.
The next pallet device will be located at the working surface level by moving upward by the thickness of . At that time, the conveyor chain 21
The pallet device 4 which has been moved upward by the upper main lift hook 24 will also be moved upward by one position of the pallet device 4.

By repeating the above operation, it is possible to move the pallet devices 4 upward one by one. The above movement is possible by moving the conveyance chain 21 using a pallet feed switch 8 formed on the operation panel 3 located in front of the operator.

Further, by repeating the above operation, the pallet device 4 pushed upward can be lowered all at once by moving the main lift chain using the main lift changeover switch 9 formed on the operation panel 3 as described above.

Effects of the Invention As explained above, the lift of this invention
Since a workbench such as a base can be arranged, it is now possible to effectively obtain a workspace without taking up much space.

Further, since the work table can be moved by a simple conveyance system, the work can be carried out as efficiently as in the conventional belt conveyor-type assembly work that moves in the lateral direction.

[Brief explanation of drawings]

Fig. 1 is a front view of the lift of this invention, Fig. 2 is a side view of the same,
FIG. 3 is a schematic front view showing the pallet lifting means on the back plate side, FIG. 4 is a plan side sectional view of the lift, and FIG. 5 is a side view showing the main lift chain. In the figure, 1...Lift 2...Base 3...Operation panel 4...Pallet snow removal 5...Pallet lifting means 6...Back plate 7...Power supply device
8...Pallet feed switch 9...Main lift elevation changeover switch 10...Emergency stop switch 11...Pallet frame shelf 12...Arm 13...Linya 14...Pallet shelf guard 15. ...Main lift motors 17, 18...Subrocket 20...Followed subrocket 22...Followed sprocket 24...Main lift hook 26...Transport hook 28...Light sensor 16...For transport Motor 19...Main lift chain 21...Transport chain 23...Protrusion 25...Protrusion 27...Shaft 1st prisoner 2nd prisoner

Claims (1)

[Claims] It is composed of a base 2, an operation panel 3, a pallet device 4, and a pallet lifting means 5, and the operation panel 3 is equipped with a power supply device 7,
Pallet feed switch 8, main lift elevation changeover switch 9
is constructed, and the pallet device 4 has a pallet rack shelf 11,
An arm 12, a linear 13 projecting perpendicularly to the arm 12, and a pallet lifting means 5.
The main lift chain 19 has a main lift hook 24 formed therein.
, a transport chain 21 each having a transport hook 26 formed therein.