JPS61243593A - Goods feeder for vending machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a product delivery device for a vending machine.

(B) Conventional technology A spiral is arranged vertically as a product delivery mechanism in a product storage column, and the spiral is rotated a predetermined amount by the rotation of a drive motor based on a product delivery command, and is locked between the helices of the spiral. In a vending machine in which the stored lowest item is dropped from the bottom end during this predetermined rotation, a cam that rotates with the rotation of the spiral is provided, a position detection switch is arranged corresponding to this cam, and the drive motor The structure is such that a position detection switch is operated to stop the drive motor every time the spiral rotates half a turn due to the rotation of the motor. In other words, as shown in Fig. 4, this type of product delivery device has a product storage column (3) which has a product loading opening (1) at the front and a product delivery opening (2) at the lower end. A shaft rod (5) around which the spiral (4) is wrapped is arranged in the vertical direction, and the spiral (4) can be rotated by a drive motor (6) connected to the upper end of the shaft rod (5). At the same time, a position detection switch (
8), and when the spiral (4) rotates 180 degrees by the rotation of the drive motor (6) based on the product delivery command, the position detection switch (8) is operated by the cam (7), and this position detection switch The operation of (8) causes the drive motor (6
) is stopped. On the other hand, in the middle of the 180 degree rotation of the spiral (4), the lowest product is released from the lock by the spiral (4) and is sent out falling from the opening (2).

(c) Problems to be Solved by the Invention In the above-mentioned lateral prior art, when the spiral (4) is rotated by the rotation of the drive motor (6), the spiral (4)
) moves the product (3) stored and locked between the spirals downward by sliding the spiral (4 + - H) as it rotates, so the load and friction of the product (3) causes the lower part of the spiral (4) to The spiral (4) rotates with a delay compared to the upper part.In other words, since the spiral (4) has a structure that extends long in the vertical direction, the stored and locked product (due to the Al load and friction, due to the elasticity of the material Twisting in the direction of rotation is likely to occur, and there is a phenomenon in which the rotation of the lower part located far from the drive motor (6) is delayed by the amount of twist compared to the rotation of the upper part connected to the drive motor (6). Therefore, when the cam (7) installed at the top of the shaft rod (5) operates the position detection switch (8) to stop the drive motor (6), the upper part of the spiral (4), which has been twisted due to rotation, will be removed. The cam (7), which operated the position detection switch (8), rotates in the opposite direction as the cam (7) rotates in the opposite direction to restore the twist.
The position detection switch (8) may be in a position where it is not activated, which may interfere with the next product delivery operation. That is, this type of device generally starts the product delivery operation on the condition that the position detection switch (8) is operated by the cam (7), so if the position detection switch (8) is not operated, There was a drawback that the next product delivery operation could not be performed.

In view of this, the present invention provides a product delivery device that can continue to maintain the operating state of the position detection switch even when the spiral stops rotating and reverse rotation occurs due to twist recovery.

C. Means for Solving the Problems The present invention provides a product delivery mechanism disposed within the product storage column,
A position at which the delivery mechanism is rotated in a predetermined manner by the rotation of the drive motor based on a product delivery command, the product locked in the delivery mechanism is sent out during the predetermined rotation, and the end of the predetermined rotation of the delivery mechanism is detected. In a vending machine in which the drive motor is stopped by the detection means, when the position detection means detects the completion of a predetermined rotation of the delivery mechanism, the delivery mechanism operates to move the delivery mechanism within a range not exceeding the detection width by the position detection means. In order to allow rotation, a timer means is provided for delaying the stop of the drive motor.

(E) Function The present invention is provided with a timer means that operates when the position detection means detects a predetermined rotation of the delivery mechanism, and the timer means delays the stop of the drive motor to a range that does not exceed the detection width of the position detection means. .

(f) Embodiment FIGS. 1 to 3 show embodiments of the present invention, and the same reference numerals as in FIG. 4, which shows a conventional example, indicate the same or similar items. (3) is a box-shaped product storage column that has an opening (1) for loading products in the front and an opening (2) for dropping products out at the bottom end, and has a product delivery mechanism inside. A spiral rod (5) is wrapped around the spiral (4).
) are arranged vertically.

And the spiral edges (4) of the spiral (4) on both sides of the shaft (5)
Products (2) can be stored and locked between A) and (4A), and products on both sides are alternately delivered and dropped each time the spiral (4) rotates 180 degrees.

Further, the shaft rod (5) has a lower end rotatably supported by a support member (9), and an upper end rotatably supported by the earthen wall (3A) of the storage column (3). The upper end of the shaft rod (5) is connected to the output shaft (6A) of the drive motor (6). αα is a permanent magnet fixed to the shaft rod (5) at 180 degree intervals, and operates a reed switch (111) as a position detection means.In other words, by rotation of the drive motor (6), the shaft rod (5) ) rotates 180 degrees, the magnet fil moves to a position corresponding to the reed switch (11), and this reed switch (
Ill is configured to work. Further, as shown in FIG. 2, the reed switch fi11 has a predetermined detection width (B) that operates when the magnet aα is located between the position indicated by the two-dot chain line and the position indicated by the solid line. A2 is a door provided with an opening (1) for loading products so that it can be opened and closed, and is used to prevent stored products from falling off the spiral (4).

On the other hand, FIG. 3 shows a functional block diagram of the present invention.
(131 is a motor control unit that controls the drive of the drive motor 16+, and when a sales signal vS generated by inserting a predetermined coin and operating a product selection button (not shown) is input, it outputs a product delivery command signal Q41. When the stop signal from the timer means Q51 is input, the output of the product delivery command signal (+41) is stopped, and the drive motor (6) is stopped.

The timer means (15) operates when a detection signal is input from the reed switch (11) as a position detection means, and outputs a stop signal to the motor control section 03 after a predetermined period of time has elapsed. The time required to move within the detection width (1") of the old reed switch after the magnet (101 is the old reed switch) rotated by the rotation of 6) is set as the predetermined time 12. It is set. In other words, when the reed switch (old switch) detects the arrival of the magnet 00) due to the end of the predetermined rotation of the spiral (4), it operates, and after a predetermined time that does not exceed the detection width (Bl) of the rotating magnet 001 It outputs a stop signal.

Next, the operation of this configuration will be explained. Product A) has 0 doors
By opening the door 2 and opening the opening (1), the shaft rod (
5) Store and lock one piece between each spiral side (4A) on both sides of (4A). After loading, close the door Oz and store the product.
.

prevent it from falling off. Here, when a predetermined amount of money is inserted and the product selection button is operated, the sales signal VS is output to the motor control unit O.
In response to the input of the sales signal vS delivered to J, the motor control section (I3) outputs a product delivery command signal (+4) to rotate the drive motor (6). Therefore, the drive motor (6
) rotates the shaft (5), and the spiral (4) rotates the product (3).
) starts the sending and falling operation. By this rotation of the spiral (4), the product (3) stored between each spiral side (4A) gradually descends. When the lowest product (3) is released from the lower end of the spiral (4), the product (3) is sent out downward from the opening (21). rotate,
When the magnet [101 is the reed switch old], the reed switch old) sends a detection signal to the timer means (151).

Therefore, the timer means 051 starts operating and the magnet 00
After a predetermined period of time in which the reed switch OD moves to just before exceeding the detection width ff31 of the reed switch OD, a stop signal is output to the motor control section (13). The motor control unit (13) that receives this stop signal stops outputting the product delivery command signal (141) and stops the drive motor (6), thereby ending one sales operation.

On the other hand, the spiral (4) and the shaft rod (5) are twisted due to the load of the product and the frictional resistance with the product due to the rotation of the spiral (4), compared to the upper part on the drive motor (6) side. Rotate with the lower part delayed.

Therefore, when the drive motor (6) stops, the spiral (4) and shaft rod (5) are elastically untwisted, and the upper part on the drive motor (6) side rotates in the opposite direction by the amount of twist. become. For this reason, the reed switch (
11) is in operation, the magnet [01] is also rotated in the reverse direction, but the timer means (15) causes the magnet 001 to rotate close to the limit of the detection width (Bl) of the reed switch (111) in the forward rotation direction. Since it is stopped, the detection width (Bl
can be located within.

(G) Effects of the Invention The present invention provides a timer means that operates when the position detection means detects a predetermined rotation of the delivery mechanism, and the timer means stops the drive motor within a range that does not exceed the detection width of the position detection means. Since the mechanism is designed to delay the rotation of the delivery mechanism, even if the delivery mechanism is twisted due to its elasticity during the product delivery operation and reversely rotates as the delivery mechanism returns to its original position after stopping, the delivery mechanism remains at the predetermined rotational position. The state detected by the detection means can be continued, and the next product sales operation can be performed normally.

[Brief explanation of drawings]

1 to 3 show embodiments of the present invention.
The figure is a side sectional view of the product delivery device, FIG. 2 is a plan view of the relationship between the reed switch and the magnet, FIG. 3 is a functional block diagram, and FIG. 4 is a conventional example. (4)...Spiral, (5)...Axis, (6)...
... Drive motor, low ... magnet, low) ... reed switch (position detection means), Q51 ... timer means, (131 ... detection width. Applicant: Sanyo Electric Co., Ltd. and one other representative) Patent Attorney Shizuo Sano Figure 1 Figure 4 Figure 217 (

Claims (1)

[Claims] 1. A product delivery mechanism is arranged in the product storage column, and the delivery mechanism is rotated in a predetermined manner by rotation of a drive motor based on a product delivery command, and the products locked in the delivery mechanism are sent out during the predetermined rotation. In addition, in the vending machine in which the drive motor is stopped by a position detection means for detecting the end of a predetermined rotation of the delivery mechanism, the drive motor is activated when the position detection means detects the end of the predetermined rotation of the delivery mechanism. A product dispensing device for a vending machine, characterized in that a timer means is provided for delaying the stop of the drive motor so as to allow rotation of the dispensing mechanism within a range that does not exceed a detection width by the position detecting means.