JP2571821Y2 - Article pushing plate feed mechanism of the article pushing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is based on an article shelf (article table) that extends forward and backward, and sequentially accommodates articles housed in front and rear by pushing (moving forward) a pushing plate from the rear side. The present invention relates to a feed mechanism of an article pushing plate in an article pushing device for a vending machine or the like pushing out from a front end.

[0002]

2. Description of the Related Art As a feed mechanism of an article pushing plate of this kind, there are a mechanism in which a base portion of an article pushing plate is screw-engaged with an electric feed screw shaft extending back and forth along an article shelf, and an article shelf. What is fixed to the electric belt which extends along is commonly used.

[0003]

[Problems to be Solved by the Invention] However, all of the conventional ones, including the electric motor, have an integral assembly structure, and the drive operation unit including the electric motor is disposed on the rear side. In addition, there is a problem that maintenance and inspection and disassembly and repair are difficult.

In view of the above, an object of the present invention is to provide a feed mechanism for an article pushing plate which has a simple structure and is easy to assemble, maintain, inspect and disassemble and repair.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an object of the present invention is to provide a method for controlling an article via a front timing belt pulley and a rear timing belt pulley installed adjacent to a front end and a rear end of an article shelf. A timing belt with an article push plate extending back and forth along the shelf is stretched, a pinion is fixed concentrically to the front timing belt pulley shaft via a one-way clutch, and a reciprocating rack is engaged with the pinion. A spring that urges the rack to always return to the home position; and a rack that moves forward from the home position against the operating force of the spring, while the rack reduces the operating force of the spring. And a rack reciprocating operation means including a rack pusher capable of reciprocating by a predetermined amount enabling reciprocation to the home position via the object pushing plate feeding mechanism of the article pushing device. Accomplish.

The rack pusher is a rack pushing means (for example, a push rod, a push block) that can reciprocate by an electric operation (for example, an electromagnetic solenoid), a mechanical operation (for example, a cam, a link mechanism), a manual operation (for example, a hand lever), or the like. And so on.

[0007]

In the present invention, in the feed mechanism of the push plate,
Each time the rack moves from the home position to the forward limit position against the acting force of the rack spring due to the forward movement of the rack pusher of the rack reciprocating operation means, or the rack acting force of the spring that follows the backward movement of the rack pusher The forward timing belt pulley is rotated by a predetermined angle from the pinion via the one-way clutch at every time of return from the forward limit position to the home position, whereby the timing belt and therefore the article pushing plate advance. The frontmost article is pushed out from the front end of the article shelf.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the drawings, for example, as shown in the drawing, a feed mechanism of an article pushing plate of the present invention includes a front timing belt pulley 12 installed below a front end and a rear end of an article shelf 11 extending horizontally. Between the rear timing belt pulley 13
A timing belt 14 that extends horizontally below the article shelf 11 is wound around the article rack 1, and the article shelf 1 is placed on an extension portion of the timing belt 14 on the approach side with respect to the front timing belt pulley 12.
1, the leg 16 of the article pushing plate 15 is fixed, and a pinion 18 is attached to a lower extension of the front timing belt pulley shaft 17 at the time of clockwise rotation in FIG. 2 (solid line in FIG. 2). (Indicated by an arrow) via a one-way clutch 19 so as to be integrally connected with the front timing belt pulley 12 in a transmission manner.
A rack 20 extending forward and backward is engaged with a portion of the timing belt 14 corresponding to a retreating portion of the timing belt pulley 12 from the front timing belt pulley 12, and rack reciprocating operation means is provided at each of a rear end and a front end of the rack 20. A spring 21 for constantly biasing the rack 20 toward the front origin position, which is a means, is engaged with a rod-shaped rack pusher 22 that can reciprocate a predetermined amount by an electric operation, a mechanical operation, or a manual operation. It can be implemented in the form of letting.

In this illustrated example, the rack pusher 2
When the rack 2 is moved backward by a predetermined amount, the front timing belt pulley 12 from the pinion 18 via the one-way clutch 19 moves from the origin position of the rack 20 to the forward limit position, and the solid arrow in FIG. Rotate clockwise as indicated by. As a result, the front timing belt pulley 12
, The timing belt 14 on the entry side, and hence the article pushing plate 15 attached thereto, advance by a predetermined amount (an amount corresponding to the thickness of the article 23), whereby the frontmost article 23 on the article shelf 11 is moved. Is pushed out from the front end and sent to a predetermined position through, for example, a chute or the like, and at the same time, the article 23 located next to the article sent out of the article shelf is moved to the front end of the article shelf so that it can be pushed out. Become.

Thereafter, when the rack pusher 22 is moved forward, the rack 20 moves back to the front origin position while following the rack pusher 22 by the action force of the spring 21. At this time, the pinion 18 is the one-way clutch 1
9 rotates idle with respect to the timing belt pulley shaft 17, so that the timing belt 14 and the article pushing plate 15
Therefore, the article 23 does not move.

[0011] Hereinafter, articles are sequentially extruded by repeating the above operation.

In addition to the above, the present invention is also applicable to a case in which the article pushing plate is attached to a portion of the timing belt which extends to the retreating side with respect to the front timing belt pulley. The present invention can be implemented in various forms, for example, when returning to the origin position via a force, the article pushing plate is advanced to push out the article.

[0013]

As is apparent from the above description, in the feed mechanism of the article pushing plate of the present invention, the rack pusher of the rack reciprocating operation means constituting the drive operation part is arranged at the front side, and the rack reciprocating operation means is provided. Since it has a simple structure that is entirely separable, including the entire structure, maintenance, inspection and repair as well as assembly can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of a feed mechanism for an article pushing plate according to the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

DESCRIPTION OF SYMBOLS 11 Article shelf 12 Front timing belt pulley 13 Rear timing belt pulley 14 Timing belt 15 Article pushing plate 17 Front timing belt pulley shaft 18 Pinion 19 One-way clutch 20 Rack 21 Spring 22 Rack pusher 23 Article

Claims (1)

(57) [Scope of request for utility model registration] 1. A timing belt with an article pushing plate extending forward and backward along an article shelf via a front timing belt pulley and a rear timing belt pulley installed adjacent to a front end and a rear end of the article shelf. The pinion is concentrically fixed to the front timing belt pulley shaft via a one-way clutch, and a reciprocable rack is engaged with the pinion, and the rack is always returned to the home position. And a rack can be reciprocated by a predetermined amount to allow the rack to move forward from the home position against the acting force of the spring while allowing the rack to return to the home position via the acting force of the spring. An article pushing and moving plate feeding mechanism of an article pushing device, wherein a rack reciprocating operation means including a simple rack pusher is engaged.