JP2000053244A - Pallet lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce loss from the viewpoint of the energy saving compared with the conventional one and to reduce the operation loss in a manufacturing process in adjusting the timing of stopping and lifting of a pallet. SOLUTION: A pallet 1 moving in an arrow Y30 direction on a conveyer is stopped and lifted in an arrow Y31 direction by two drive sources conventionally, however this device enables it by one drive source, or a motor 26, the rotation of the motor 26 can move a plate 2 vertically in the arrow Y31 direction via a cam 25 and a bracket 24, a stopper shaft 3 stops the pallet 1, the plate 2 lifts and stops it, and the one-point adjustment by the cam 25 adjusts each timing of stopping by the stopper shaft 3 and lifting/stopping by the plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet lifting device for lifting a stopped pallet when the pallet moving on a conveyor is stopped to perform work.

[0002]

2. Description of the Related Art Conventionally, in a manufacturing process of a product using, for example, a belt or a roller conveyor, various parts and semi-finished products are placed on a pallet which is moved along the conveyor, and the When working on various parts or semi-finished products, the moving pallet is temporarily stopped at a predetermined position, and then lifted and stopped at a predetermined position in the vertical direction to perform the work. .

At this time, a pallet stopper mechanism for temporarily stopping the moving pallet at a predetermined position, and a pallet stopper mechanism for lifting the stopped pallet in a vertical direction (substantially vertically) and stopping at a predetermined position. Equipment having a pallet lifting mechanism is used.

As described above, conventionally, for example, in a product manufacturing process, a pallet stopper mechanism and a pallet stopper mechanism are used as a mechanism for stopping a pallet moving on a conveyor and regulating the lifting of the pallet when performing work. It is composed of a two-mechanism system using a lifting mechanism.

The timing for stopping the pallet at a predetermined position on the conveyor and the timing for lifting and stopping the pallet in the vertical direction are different for each of the pallet stopper mechanism and the pallet lifting mechanism. Has been adjusted.

[0006]

As described above, in the conventional method using the equipment including the pallet stopper mechanism and the pallet lifting mechanism, the stopping of the pallet moving on the conveyor and the lifting and stopping of the pallet are performed. Is composed of two mechanisms, a pallet stopper mechanism and a pallet lifting mechanism, and in order to drive them, two driving sources provided for each mechanism are required, and a viewpoint of energy saving. Therefore, there is a problem that energy is lost.

[0007] Adjustment of the timing of stopping the pallet on the conveyor, and adjustment of the lifting and stopping timing of the pallet in the vertical direction are also adjusted at two locations for each of the pallet stopper mechanism and the pallet lifting mechanism. However, there is also a problem that the number of work steps is lost in the manufacturing process.

The present invention solves the above-mentioned conventional problems. Compared with the conventional art, it is possible to reduce the number of driving sources for stopping and lifting a pallet moving on a conveyor, and to save energy. In addition to reducing the energy loss, the timing adjustment of stopping and lifting the pallet on the conveyor can be simplified.
Provided is a pallet lifting device that can reduce a loss in work steps in a manufacturing process.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a pallet lifting apparatus according to the present invention employs a conventional pallet lifting apparatus which stops and lifts a pallet moving on a conveyor by two driving sources. The operation is performed by one drive source, the plate is moved up and down by rotation of the cam by the drive source, and the pallet is stopped by the stopper shaft, lifted and stopped by the plate, and adjusted at one place by the cam. The timing of stop by the stopper shaft and lifting and stopping by the plate are adjusted.

As described above, it is possible to reduce the number of driving sources for stopping and lifting the pallet moving on the conveyor, and to reduce energy loss from the viewpoint of energy saving, as compared with the related art. ,
It is possible to simplify the timing adjustment of stopping and lifting the pallet on the conveyor, and also in such timing adjustment, it is possible to reduce work-related losses in the manufacturing process.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pallet lifting device according to a first aspect of the present invention operates by stopping the pallet on a work object placed on a pallet moving along a conveyor. A pallet lifting device that stops and lifts the pallet when performing the pallet, wherein a stopper means for stopping the pallet is formed on an upper surface of a plate-like body at a position below the pallet, and the pallet is lifted. A plate for raising is provided, and one driving unit for moving the plate up and down via a cam is provided, and the plate moving up and down via the cam by the one driving unit is provided.
The stop and vertical movement of the pallet by the stopper means are controlled.

According to a second aspect of the present invention, there is provided a pallet lifting device in which one of the driving means according to the first aspect has a function of temporarily stopping, and when the pallet is stopped and lifted, the one driving means is driven. The stop and the lifting are performed at an arbitrary timing by adjusting one part by means.

According to the above construction, the pallet moving on the conveyor is stopped and lifted by the two driving sources in the past, but the pallet is moved by the single driving source. To move the plate up and down, stop the pallet by the stopper shaft and lift and stop by the plate, and adjust the timing of stop by the stopper shaft and lift and stop by the plate by one adjustment by the cam Can be performed.

Hereinafter, a pallet lifting device according to an embodiment of the present invention will be specifically described with reference to the drawings. First, an outline of a pallet lifting device according to an embodiment of the present invention will be described.

FIG. 1 is a schematic configuration diagram of a pallet lifting device according to the present embodiment, and is a perspective view corresponding to a state of FIG. 2B described later. In FIG. 1, reference numeral 1 denotes a pallet moving on a conveyor (not shown) in the direction of arrow Y10;
Is a plate that moves up and down in the direction of the arrow Y11 to lift the pallet 1, and 3 is a stopper shaft fixed near the upper end of the plate 2 to stop the pallet 1 moving on the conveyor. Is moved up and down by one driving source described later.

FIG. 2 is an explanatory diagram of each driving state showing the movement of each part around the pallet 1 of FIG. FIG. 2A is a state diagram when the plate 2 is at the lowest position and no action is performed on the pallet 1 moving on the conveyor (not shown) in the direction of arrow Y20. FIG.
FIG. 6A is a state diagram when the plate 2 is at an intermediate position by the movement in the direction of the arrow Y21, the stopper shaft 3 abuts on the end surface of the pallet 1 moving on the conveyor, and the pallet 1 is stopped. . FIG. 2 (c) is the same as FIG.
Is moved to the uppermost position by the movement in the direction of the arrow Y22, and the pallet 1 stopped in FIG.
It is a state diagram at the time of raising in 23 directions. In these three states, by temporarily stopping the drive source for moving the plate 2 up and down, the respective states can be maintained for an arbitrary time. Note that in FIG.
The position of the pallet 1 indicated by a chain line (virtual line) is shown in FIG.
This is the same position as the position of the pallet 1 shown in FIG.

Next, a specific example of the pallet lifting device according to the embodiment of the present invention will be described. FIG. 3 is a specific configuration example for explaining the operation of the pallet lifting device of the present embodiment.
In FIG. 3, 1 indicates an arrow Y3 on a conveyor (not shown).
Pallet moving in the 0 direction, 2 is a plate that moves up and down in the direction of arrow Y31 to lift pallet 1, and 3 is fixed near the upper end of plate 2 to stop pallet 1 moving on the conveyor. A stopper shaft, 24 is a bracket with a cam follower fixed to the lower surface of the plate 2, and 25 is a bracket with a cam follower shown in FIGS. 2 (a) and 2 (b).
A plate-like cam 26 to which each state (three states) is assigned as shown in each drawing of FIG. 2C, and a motor 26 as a drive source for rotating the cam 25 in a predetermined direction.

The operation of the pallet lifting device having the above components will be described below. Conventionally, as shown in FIG. 3, two driving sources stop the pallet 1 moving on the conveyor (not shown) in the direction of arrow Y30 and lift the pallet 1 in the direction of arrow Y31. The operation is performed by the motor 26 which is the source.

Then, the cam 25 is rotated simultaneously by the rotation of the motor 26, and the plate 2 is moved up and down in the direction of arrow Y31 via the bracket 24 abutting on the cam 25, and the pallet 1 is stopped by the stopper shaft 3. And the plate 2 can be lifted and stopped.

Further, the cam 25 is simultaneously rotated by the rotation of the motor 26, and the plate 2 is moved up and down in the direction of the arrow Y31 through the bracket 24 abutting on the cam 25 by adjusting the cam 25 at one place. 1, the respective timing adjustments of the stop by the stopper shaft 3 and the lifting and the stop by the plate 2 can be performed.

As described above, the motor 26 is a driving source for moving the plate 2 up and down. When the motor 26 is rotated, the cam 25 rotates at the same time, and the plate 2 moves up and down via the bracket 24. .

Here, if the motor 26 is temporarily stopped when the allocation positions a, b and c corresponding to the respective states of the plate 2 on the cam 25 abut against the bracket 24, the allocation positions a, b and c of the cam 25 Accordingly, the plate 2 can hold three states as shown in FIGS. 2 (a), 2 (b), and 2 (c).

By controlling the temporary stop of the motor 26 with a sensor (not shown) or the like, the positions of the cam 25 for the respective positions of the plate 2 are assigned to the positions a, b, c.
2A, 2B, and 2C, the driving timings of the three states of the plate 2 can be adjusted.

As described above, the conventional method of stopping and lifting the pallet 1 moving on the conveyor by two driving sources is performed by the motor 26 as one driving source. The plate 2 is moved up and down by the rotation of the cam 26 to stop the pallet 1 by the stopper shaft 3 and to lift and stop by the plate 2. It is possible to adjust the timing of stopping and lifting and stopping by the plate 2.

As a result, the motor 26 as a driving source for stopping and lifting the pallet 1 moving on the conveyor and its related members can be reduced as compared with the related art, and energy saving from the viewpoint of energy saving. Loss can be reduced, and the timing adjustment of stopping and lifting the pallet 1 on the conveyor can be simplified, and the timing adjustment can also reduce the work-hour loss in the manufacturing process. be able to.

[0026]

As described above, according to the present invention, the pallet moving and moving on the conveyor is stopped and lifted by the two driving sources in the prior art. The plate is moved up and down by the rotation of the cam by the drive source, the pallet is stopped by the stopper shaft and lifted and stopped by the plate, and the cam is adjusted in one place to stop by the stopper shaft and lift by the plate. And stop timing adjustments can be performed.

As a result, it is possible to reduce the number of driving sources for stopping and lifting the pallet moving on the conveyor as compared with the related art, and to reduce energy loss from the viewpoint of energy saving. It is possible to simplify the timing adjustment of stopping and lifting the pallet on the conveyor, and also in such timing adjustment, it is possible to reduce work-related losses in the manufacturing process.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a pallet lifting device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of each driving state showing movement of each part around a pallet in the embodiment.

FIG. 3 is a specific configuration example for explaining the operation of the pallet lifting device in the embodiment.

[Explanation of symbols]

 1 Pallet 2 (Pallet Lifting) Plate 3 Stopper Shaft 24 (Cam Follower) Bracket 25 (Plate Lifting) Cam 26 Motor

Claims (2)

[Claims] 1. A pallet lifting device that stops and lifts a pallet when performing an operation by stopping the pallet on a work object placed on a pallet moving along a conveyor. A stopper means for stopping the pallet is formed on the upper surface of the plate-like body at a position below the pallet, a plate for lifting the pallet is arranged, and the plate is moved up and down via a cam. A driving means for causing the plate to move up and down via the cam by the one driving means;
A pallet lifting device characterized in that stop and vertical movement of the pallet by the stopper means are controlled. 2. The method according to claim 1, wherein one of the driving means has a function of temporarily stopping, and when the pallet is stopped and lifted, the stop and the lifting are performed at an arbitrary timing by adjusting one part by the one driving means. 2. The pallet lifting apparatus according to claim 1, wherein the pallet lifting operation is performed.