JPH0455216A - Tray feeder - Google Patents

Abstract

PURPOSE:To take out trays one by one accurately by pivotally attaching air cylinders installed slantingly while keeping their horizontal restoring forces so that tray holding tilt plates to sandwich the lowermost part tray sidewall among stacked trays can be fitted to the tray holding position. CONSTITUTION:Stacked trays 3 are inserted between stocker side plates 1 with their bottom surfaces facing downward as to be held with a tray locking piece IQ. And air is introduced from air inflow horses 9 to air cylinders 5 so as to extend cylinder rods 10 for moving tray holding tilt plates 4 in the trays 3 direction. Owing to the extension of the rods 10, the tilt plates 4 can sandwich the lowermost part tray sidewall. Thereby, the balance between weights 8 and the cylinders is lost due to the weight of the trays 3 so that the rods 10 can extend while the cylinders 5 are fluctuating downward. Thereby, the lowermost part tray 3a can be separated from the second tray and subsequent ones.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an improvement of a tray removing device in a tray feeder.

(B) Prior Art Conventionally, thin trays for packaging sweets and the like have been stacked when stored before use, and are removed one by one when used. Devices for removing the stacked trays one by one include vacuum bats installed on both sides of the loaded cases, clamping with rolls installed on both sides, or gripping with nails. There were some things that could be used to supply desorption.

However, in the case of a device that suctions with a vacuum vat, it cannot handle trays of different sizes, and in the case of a device that uses rolls to hold the suction, the contact surface of the rolls is large, so the friction between the overlapping surfaces of the trays is The force increases, and due to the thickness of the trays, it is not always possible to accurately remove the trays one by one.

Furthermore, even in the case of a device that grips the trays using thin plate springs, it has not always been possible to remove the trays one by one due to the unevenness of the edge of the tray mouth during loading and the thickness of the trays when loaded under pressure.

(C) Problems to be Solved by the Present Invention Therefore, the present invention has been developed by attaching a tray-clamping inclined plate to the tip of the cylinder rod of an air cylinder pivotally mounted to the main body, and in which the tray-clamping inclined plate is When the lowest 1-lay of the stacked trays is clamped, the air cylinder descends due to the weight of the loaded trays, and the overlapping surfaces of the stacked trays are clamped, causing the upper tray to be pushed up. Regardless of the irregularity of the edges of the I-Herrero when loaded or the thickness of the tray in the rolled-down loading state, it is possible to reliably separate and drop the trays one by one.

(D) Technical Means for Solving the Problems In order to solve the above problems, the present invention provides a tray clamping inclined plate which is located closer to the bottom of the stacked trays from both sides on the side wall of the tray. The 1-to-Ray supply machine is characterized in that an air cylinder installed in an inclined manner to match the inclination is pivoted to the main body of the 1-to-Ray supply machine by exerting a horizontal restoring force.

(E) Example Hereinafter, a detailed explanation will be given according to an illustrated embodiment.

FIG. 1 is a side view of a tray feeder according to the present invention.

The stocker body 2 and the stocker side plates 1 are vertically disposed on the stocker body 2 and face each other at an interval corresponding to the width of the loaded trays.

The inner wall of the lower edge of the stocker side plate is shaped like a projection and forms a tray locking portion 1a. Mana, stocker side plate 1. The upper end of the tray is slightly opened outward to form a tray loading portion 1b that allows loaded trays to be easily inserted from the top.

The upper surface of the stocker main body 2 is provided along the lower end of the stocker side plate 1-, and the back side of the upper surface plate serves as an air cylinder mounting surface. It is attached to the shaft.

The cylinder rod of the air cylinder 5 ] - 0 has a tilted plate 4 for holding one Heley. In this embodiment, the tray clamping inclined plate 4 is attached to the cylinder rod 10 with an inclination greater than the slope of the side surfaces of the trays 1 to 1 so as to contact the lower end 3b of the side surface of the tray to be clamped.

The vertical length of the tray-clamping inclined plate 4 is longer than the depth of the tray so that it can be positioned below the I-lay when the lower end of the I-ray holding inclined plate 4 abuts. ing. The upper edge of the tray holding inclined plate 4 is a cylinder rod]-
It is bent horizontally in the direction of 〇 and is in sliding contact with the back side of the upper surface of the stocker body 2. This is to prevent the tray clamping inclined plate 4 from moving unstablely when the cylinder rod 10 is extended.

The surface of the tray-clamping inclined plate 4 is desirably made of a friction material such as urethane rubber and carved in a sawtooth shape so that the tray can be easily clamped. Further, a friction material such as urethane rubber may be attached to the part.

A stopper 5a is attached to the tip of the air cylinder 5, and a thin wire 1-2 is tied to the stopper 5a.

Instead of the wire 12, a G-shaped nylon string, a spring band, etc. may be used.

The wire 1-2 passes through a through hole cut out in a part of the upper surface of the stocker body 2, and is tied to a weight 8 via a pulley 7 attached to the outer wall of the stocker side plate 1. The weight 8
is approximately the same weight as the air cylinder 5. In this embodiment, the air cylinder 5 is suspended by a weight 8 via a pulley 7, thereby serving as a horizontal maintenance mechanism when the air cylinder is stationary and a horizontal restoration mechanism when the air cylinder is extended.

(F) Function of the present invention An embodiment of the present invention has been described above, and the function of the present invention will be described below while explaining its operation.

As shown in FIG. 1, the stacked trays 3 are placed between the stocker side plates with their bottoms facing downward and held by the tray locking pieces a.

First, when air is fed into the air cylinder 5 from the air inflow hose 9, the cylinder rod ]-0 extends, and the tray clamping inclined plate 4 attached to the cylinder rod 10 moves in the A direction in the figure, that is, when the tray is loaded. It starts moving in the direction of 1 to 3.

As the cylinder rod 10 extends, the tray clamping inclined plate 4 begins to clamp the lower end of the side surface of the unloaded tray 3 located at the lowest position, as shown in FIG. Further, as the tray-clamping inclined plate 4 advances, as shown in FIG. When the air cylinder is mounted, the air cylinder 5, which is pivotally mounted on the surface, begins to rotate downward. When the air cylinder 5 descends, the tray located at the lowest position begins to separate from the tray locking piece 1a while being twisted in the center. Simultaneously with this detachment operation of the tray located at the lowest position, the overlapping surfaces of the loaded trays are clamped by the tray clamping inclined plate 4, so that the upper tray is pushed up and securely attached to the tray locking piece 1a. This prevents repeated falls.

Tray 3 loaded with the lowest tray by air cylinder 5
When the air cylinder rod 10 is detached from the air cylinder rod 10 and falls due to its own weight and reaches the protruding end, the air cylinder rod 10 turns back. When the air cylinder 5 is no longer affected by the weight of the loaded objects 1 to 3, it returns to its horizontal state due to the weight of the weight 8 that supports the air cylinder 5. At this time, due to the inertia of the weight of the air cylinder 5, the center of gravity shifts at the exit end, causing a time lag in the horizontal restoration of the air cylinder 5, and this slow movement prevents the detachment tray from rising again and accelerates its fall.

In the present invention, by repeating this operation, loaded trays can be detached and supplied one by one.

(F) Effects of the present invention The structure and operation of the present invention provide the following effects.

First, even if the trays are of different sizes, the edges of the trays 30 are uneven when loaded, and regardless of the thickness of the trays 3 in the rolled-down loading state, each tray can be reliably removed one by one. It became something I could let go of.

Secondly, the effect of the embodiment is that the inclination of the tray clamping inclined plate 4 is greater than the slope of the side surface of the tray to be clamped, so that the tray clamping inclined plate 4 is positioned at the lower end of the side surface of the tray. This makes it possible to reduce the frictional force on the overlapping surfaces of the stacked trays during detachment, making it possible to more reliably detach the trays one by one.

Thirdly, as an effect of the embodiment, the structure in which the air cylinder 5 is suspended by a weight 8 via a pulley 7 serves as a horizontal maintenance mechanism and a horizontal restoration mechanism, so that a tray feeding machine that is inexpensive and has fewer failures can be achieved. I can provide it.

[Brief explanation of drawings]

FIG. 1 is a side view of a tray feeder according to the present invention, and FIG. 2 is a side view showing a state in which the lowest tray of loaded trays has been removed. 1. 5. Stocker side plate tray 4 Air cylinder pulley 81. Weight cylinder rod 21. Stocker main body, inclined plate for holding tray 61. Mounting bracket 90. Air hose 111. spindle

Claims (1)

[Claims] An air cylinder, which is attached with inclined plates for holding trays that are close to each other from both sides toward the bottom of the loaded trays and is inclined to match the inclination of the side walls of the trays, is attached to the main body of the tray feeder to provide horizontal restoring force. A tray feeding machine characterized by the following: