JPH06137397A - Step disjointing device - Google Patents

Abstract

PURPOSE:To smoothly operate a step disjointing device used for a tray feeder stably even at high speed and with relative low cost. CONSTITUTION:A claw 5 for hooking a tray 1 is opened/closed by combination of movement of a cam follower 3 received from a plate cam 2 during moving up and down of a holder 4, and movement of a stopper bolt (A) 6 separating from the claw 5 by being pushed up of the base end of a lever 9 with a stopper bolt (B) 8, and hence step disjointing is performed smoothly and stably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stepping device for a trefeeder which is a type of automatic machine.

[0002]

2. Description of the Related Art A conventional disassembling apparatus has a structure as shown in a perspective view of an essential part of FIG. That is, a two-stage cylinder 13 having an intermediate position is attached to the main body 7 and is movable in the directions of arrows AB, and a cylinder 12 is attached to the tip of the two-stage cylinder 13 and is movable in the directions of arrows CD. is there. Further, the trays 1 piled up by the claws 5 attached to the tip of the cylinder 12 are lifted by the operation of the two-stage cylinder 13 so that the tray 1 at the lowermost stage is separated.

The operation of the destacking device will be described below with reference to the explanatory view of FIG. First, FIG. 6 (a) shows a front view of the state where the claws 5 reach the upper limit, and the claws 5 are hooked on the tray 1 which is the second from the bottom of the stacked trays 1, and the cylinder 12 moves in the direction of arrow C. The tray 1 in the lowermost stage is removed and moved while the second stage cylinder 13 is moved to the upper limit.

FIG. 6 (b) is a front view showing the state where the claw 5 is at the lower limit, and after lowering the two-stage cylinder 13 to the lower limit, the cylinder 12 is retracted in the direction of arrow D, and the tray 1 is set on the main body 7. Land.

FIG. 6 (c) is a front view showing a state in which the claw 5 is in the intermediate position. After the two-stage cylinder 13 is extended to the intermediate position, the cylinder 12 is extended in the direction of arrow C to the maximum, The claw 5 is caught on the second tray 1.
After confirming with the sensor 14 that the claws 5 are caught on the tray 1 in the second stage from the bottom, if the second stage cylinder 13 is extended from the intermediate position to the upper limit, the step-out motion is completed.

[0006]

However, in such a structure, since a cylinder is used, a sensor and a control device are indispensable, resulting in a high cost, and the time required for the step-out operation to complete one cycle does not affect the operation of the cylinder. Had the problem of being affected by.

In view of the above problems, it is an object of the present invention to perform high-speed and stable step-out without a sensor or a controller.

[0008]

In order to solve the above problems, the present invention comprises a cam follower that moves up and down along a plate cam attached to the main body, and a pawl opening / closing mechanism using a lever. It is designed to be able to open and close the claws for lifting.

[0009]

According to the present invention, since the pawl is interlocked with the cam follower that moves up and down along the plate cam and the lever that moves with the stopper bolt, there is no stop time corresponding to the conventional intermediate position, and therefore smoothness is achieved. You will be able to perform high-speed disassembling.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the structure of a step-out device according to an embodiment of the present invention. In FIG. 1, 1 is a tray, 2 is a plate cam attached to the main body 7, 3 is a cam follower that moves up and down along the plate cam 2 (direction of arrow AB),
Reference numeral 4 denotes a holder for lifting the tray 1, to which a claw 5 described later is attached, and a spring (A) 10 is stretched between the holder 4 and the claw 5. The pawl 5 can rotate (direction of arrow CD) about a shaft 3a to which the cam follower 3 is attached. 6 is a stopper bolt that is attached to the tip of a lever 9 described below and supports the claw 5
(A) and 8 are stopper bolts (B) attached to the main body 7 for pushing up the other end of the lever 9, and the lever 9 is pulled by the spring (B) 11 so that the tip of the lever 9 is pulled, and the fulcrum 9A
The shaft is attached to the holder 4 smoothly and rotated (in the direction of arrow E-F).

Next, the operation of the step-out device shown in FIG. 1 will be described with reference to FIGS. In each of these figures,
(1) is a front view of the holder 4 and the lever 9, and (2) is a side view thereof. The tray 1, the plate cam 2, the cam follower 3, the holder 4, the claw 5, the stopper bolt (A) 6, the main body 7, Stopper bolt (B) 8, lever 9, spring (A) 10,
The main parts such as the spring (B) 11 are shown.

FIG. 2A shows a state in which the holder 4 is located at the upper limit. The tray 1 is hooked by a claw 5, and the claw 5 is pulled by a spring (A) 10 mounted between the claw 5 and the holder 4, but a stopper bolt ( A) It is 6 so it doesn't move.

Next, FIG. 2B shows the cam follower 3 of FIG. 2A.
Shows a state in which the plate cam 2 descends along the plate cam 2 and slightly passes over the mountain portion 2a of the plate cam 2. The reason why the cam follower 3 is not in contact with the plate cam 2 is that the stopper bolt is
This is because the movement of the claw 5 is regulated by (A) 6.

FIG. 3 (a) shows a state in which the cam follower 3 descends from the ridge portion 2a along the plate cam 2 and the holder 4 is located at the lower limit. At this time, the base end of the lever 9 is attached to the main body 7 by a stopper bolt (B) 8
Then, the stopper bolt (A) 6 attached to the tip of the lever 9 lowers and is disengaged from the claw 5. The pawl 5 is pulled by the spring (A) 10 until the cam follower 3 contacts the plate cam 2, and at the same time, the tray 1 lands on the main body 7.

The above is the operation of the step-out device when descending. Next, the operation at the time of rising will be described.

FIG. 3B shows a state before the cam follower 3 reaches the crest portion 2a of the plate cam 2. At this time, the lever 9 is apart from the stopper bolt (B) 8, but the stopper bolt (A) 6 is still located below the claw 5,
The lever 9 does not return to the state shown in FIG. Cam follower 3
Rises along the plate cam 2.

Next, FIG. 4 (a) shows a state in which the cam follower 3 has passed the ridge portion 2a of the plate cam 2. Here, the cam follower 3 causes the claw 5 to hook the second tray 1 from the bottom, and at the same time, the stopper bolt (A) 6 comes off the claw 5.
The lever 9 is pulled by the spring (A) 10 mounted between the holder 4 and the holder 4, and the state shown in FIG.

FIG. 4 (b) shows the state when the holder 4 has risen to the upper limit again. Claw 5 in Figure 4 (a)
This means that the tray 1 of the second stage from the bottom that has been hooked is lifted and the disassembling operation is completed. Further, if the tray left in the main body 7 is moved, it is possible to restart the step-out operation.

[0020]

As described above, the step-out device of the present invention is provided with a simple mechanism including a plate cam, a cam follower, and a lever, so that a high-speed, stable and low-cost step-out device without a cylinder is provided. The device can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of a step-out device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of FIG.

FIG. 3 is a diagram for explaining the operation of FIG.

FIG. 4 is a diagram for explaining the operation of FIG.

FIG. 5 is a perspective view of a main part of a conventional disassembling apparatus.

FIG. 6 is a diagram illustrating the operation of FIG.

[Explanation of symbols]

1 ... Tray, 2 ... Plate cam, 3 ... Cam follower, 4
… Holder, 5… Claw, 6… Stopper bolt (A),
7 ... Main body, 8 ... Stopper bolt (B), 9 ... Lever, 10 ... Spring (A), 11 ... Spring (B).

Claims (1)

[Claims] 1. A plate cam attached to the main body, a cam follower that moves up and down along the plate cam, a pawl capable of rotating about a shaft to which the cam follower is mounted, and a shaft that smoothly supports the shaft. A holder to which the claw is attached via a spring (A), a lever having a spring (B) different from the spring (A) to pull the tip end to smoothly attach a fulcrum to the holder, and a lever attached to the tip end of the lever The stopper bolt (A) that supports the claw and the stopper bolt that functions to push up the base end of the lever
Stopper bolt attached to the main body different from (A)
A stage disassembling device comprising (B).