JPH07120470B2 - Vending machine product dispensing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product dispensing device of a flapper dispensing system, in particular, to a product dispensing device.

2. Description of the Related Art Conventionally, this type of product dispensing device is configured as shown in FIGS.

In the product dispensing device shown in FIG. 4, 1 and 2 are first and second product pedestals pivotally supported by shafts 3 and 4, respectively.
The downward rotation of is restricted by a single cam plate 5. The cam plate 5 has a semicircular shape and is fixed to the tip of the cam shaft 6 so as to be horizontally rotatable. 7 is the first product stand 1
The products in the first product column that are stacked on top of each other are labeled with I ₁ , I ₂ , I _3, ... Reference numeral 8 is a product in the second product column stacked on the second product cradle 2 and similarly denoted by II ₁ , II ₂ , II ₃ ... 9,10 is the first
The second stopper pushes the second product from the bottom of the first and second product columns to the side of the stocker wall surface 12 by pushing it out by the cam body 11 fixed to the camshaft 6 and stacking the second or more products. It supports products. Reference numerals 13 and 14 denote first and second sold-out detection levers which are urged upward by springs (not shown). The tips of the detection levers project into the first and second product columns. , 8 and are pressed downward against the spring. 15, 16 are the first and second sold-out detection levers 13,
Reference numerals 14 are first and second switches for detecting that the spring 14 has rotated upward by the biasing force of the spring.

The rotation of the camshaft 6 is driven by a motor (not shown), a stop cam (not shown) attached to the camshaft 6 and a cam switch [not shown] that detects the state of the stop cam as follows. Controlled by.

Incidentally, in the past, the motor only rotates in a single direction. Further, the product 7 in the first product column and the product 8 in the second product column are the same product, and the product payout is executed from the first or second product column each time the payout instruction is detected. .

Figure 6 shows I ₁ is paid out in the _first payout instruction detection,
The second process of paying out II ₁ in the second detection of payout instruction
The state of the 1st, 2nd goods stand 1 and 2 and the cam plate 5 is shown.

FIG. 6 (a) shows the initial state of FIG. 4 and FIG.

When the first payout instruction is detected, the cam plate 5 rotates 90 ° clockwise as shown in FIG. 6 (b), and the engagement between the first product receiving stand 1 and the cam plate 5 is released.

It should be noted that when the cam plate 1 is rotated by 90 ° and the first product support 1 is rotated downward, the second product I ₂
7 is pressed against the stocker wall 12 by the cam body 11 as shown in FIG. 7, and only the product I ₁ is dispensed when the first product support 1 is rotated downward. When the payout of the product I ₁ is completed, the cam plate 5 further rotates 90 ° and rotates downward as shown in FIGS. 6 (b) to 6 (c).
Is pushed up and the pressing of the product I ₂ by the cam body 11 is released.

When the second payout instruction is detected, the cam plate 5 rotates 90 ° as shown in FIGS. 6 (c) to 6 (d), and the engagement between the second product receiving stand 2 and the cam plate 5 is caused. The product II ₁ is dispensed as shown in FIG. 8, and when the dispensing is completed, the product returns to the initial state of FIG. 6 (a).

Thus, in the conventional case, the cam plate 5 rotates in a single direction,
One product is paid out each time it rotates.

Further, conventionally, when at least one of the first and second switches 15 and 16 is in the sold-out detection state, the product may not be paid out at the time of the next payout, so even if the product remains in the product column on one side, In such a case, it is configured to immediately judge that the product is in a sold-out state and stop all sales.

In Japanese Patent Laid-Open No. 59-186089, the drive shaft 22 is rotated from the state shown in FIG. 12 (a) to rotate the semi-circular control unit 23, and as shown in FIG. 12 (b). As shown in the figure, the control member 25 is allowed to rotate about the support shaft 24, and the main stopper 26 of the right product column is rotated downward to pay out the lowermost product of the right product column. A dispensing device is disclosed.

In this conventional example, the control unit 23 in the state shown in FIG.
When the stop state of the product is set to the standby position [0 °], the control unit 23 is intermittently operated 180 ° in one direction every time a dispensing instruction is detected, and products are alternately dispensed from the right product column and the left product column. .

Here, the case of performing the payout operation of the product column on the left side will be taken as an example.When performing the payout operation of the product column on the left side, the presence or absence of the product in the product column on the right side to be paid out next is confirmed. When the product in the right product column is sold out, the product dispensing operation in the right product column is continuously executed, that is, the blank product in the right product column is executed and the product returns to the standby position [0 °]. Is configured.

Problems to be Solved by the Invention In this way, even if one of the left and right product columns is sold out, the product dispensing device that continues selling without suspending the sale until the product is sold out. Was paying out one product in 180 ° intermittent operation in one direction, but when one of the product columns was sold out, it was switched to 360 ° operation in one direction and the rotation range of the control unit 23 was more than before. Is also increased and the operation is continued.

In the case of the configuration as disclosed in Japanese Patent Laid-Open No. 59-186089, even if the product column on one side is sold out, the product is paid out from the product column on the other side and the sales operation is continued. However, there is a problem that it takes a long time for one selling operation.

Further, since it is necessary to rotate the rotary drive system by an angle twice as large as a normal operation for one selling operation, there is a problem that the mechanical portion is worn.

The present invention is of course capable of continuing the sales without stopping the sales even when one of the left and right product columns is sold out. An object of the present invention is to provide a product dispensing device that can reduce the working amount and working time.

Means for Solving the Problems The product dispensing device for a vending machine of the present invention is provided with vertically long product columns that can be stacked and stored side by side, and one end along a wall adjacent to the lower end of each product column. A merchandise pedestal supported by is provided at each lower end of the merchandise column, and a semi-circular cam plate for horizontally supporting the merchandise cradle or rotating the free end downward to hang the merchandise cradle is provided. , It is arranged so that it can appear and disappear on the left and right product columns along the lower surface of the left and right product pedestals, and when the bottommost product is carried out, the second product from the bottom is pressed to drop the products other than the bottommost product. Place the stopper to prevent it from being placed above each product pedestal,
A cam body that operates the stopper is provided on the operation shaft of the cam plate, and the operation of the stopper is interlocked with the operation of the product cradle so that the cam plate exists across both sides of the left and right product columns. It is configured to operate from the standby position to the left product column unloading position that has completely moved to the right product column side, and the right product column unloading position that has completely moved to the left product column side, and it also detects the presence or absence of stored products. Provide a sold-out detection switch near the lower end of each product column, and when the sold-out detection switch detects that the product is sold out, move the cam plate in the direction that does not carry out the product from the sold-out product column of the left and right product columns. 90
It is characterized in that a control means is provided for rotating the cam plate in a reciprocating manner so as to reduce the rotation range of the cam plate more than before the sold-out detection switch detects the sold-out.

Operation With this configuration, when the sold-out detection switch provided on the product column does not detect the sold-out state, the cam plate extends from both sides of the left and right product columns to the right product column. Side product column unloading posture completely moved to the left side, and right product column unloading posture completely moved to the left side product column side, and the product cradle is alternately opened each time a product dispensing instruction is detected. Products are paid out alternately from the left and right product columns.

When the sold-out detection switch provided on either of the left and right product columns detects the sold-out state, the cam plate is reciprocally rotated 90 ° in a direction that does not execute the carry-out posture to carry out the product from the sold-out product column, and the product payout instruction is issued. Each time it is detected, only the product cradle on the side where the product remains will operate and the product will be dispensed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In this embodiment, in the conventional flapper dispensing type product dispensing device shown in FIGS. 4 to 8, when there is a product in both the left and right product columns, the cam plate 5 is provided in the same manner as in the conventional case. Each time the left and right product columns are activated, the product is alternately dispensed from the left and right product columns each time a product dispensing instruction is detected, and the product cradle is activated when the products in one product column run out. The rotation range of the cam plate 5 is reduced in the following manner so that only the product cradle on the side where the product remains can operate.

FIG. 1 shows a control circuit of the DC motor 17 for driving the camshaft.

18 is a product selection button, 19a is a reading circuit which reads out the sold-out detection state of the first and second switches 15 and 16 and notifies the microcomputer 19b as a control means. The microcomputer 19b is a first and second switch. When none of the items 15 and 16 is being sold out, the selling operation of FIG. 6 is executed every time the operation of the product selection button 18 is detected, and one of the first and second switches 15 and 16 is operated. When the sold-out detection is in progress, a 90 ° reciprocating motion is executed in a predetermined direction according to the position of the cam plate 5 and the sold-out detection column at that time, and when both the product columns are in the sold-out detection, all sales are stopped. Software is configured. Reference numeral 20 is a polarity switching circuit for switching the voltage polarity to the DC motor 17 according to an instruction from the microcomputer 19b, and reference numeral 21 is a stop cam switch for detecting the stop position of the camshaft 6 at every 90 ° and notifying the microcomputer 19b.

Next, the software configuration of the microcomputer 19b will be described with reference to FIG. If none of the first and second switches 15 and 16 detect the sold-out state, the sixth switch
Since it is similar to the figure, here is the ninth item in the second product column.
The case where the product jam shown in the figure occurs will be described as an example.

When the cam plate 5 is at the initial position in FIG. 2 (a) and only the second switch 16 is detecting the sold out, the product selection button
When the operation of 18 is detected, the microcomputer 19b executes the following operation each time.

First, in the polarity switching circuit 20, the DC motor 17 is rotated clockwise [arrow A].
Direction] and rotate the cam plate 5 90 ° as shown in FIG. 2 (b) to allow rotation below the first pedestal 1
After paying out I ₁ , the polarity switching circuit 18 is reversed to instruct the DC motor 17 to rotate to the left [in the direction of arrow B] to move from the position shown in FIG. 2B to the initial position shown in FIG. 2A. The cam plate 5 is returned.

In this way, when the product sold-out is detected in one of the product columns on one side, the movement of the cam plate 5 is switched to a reciprocal rotation of 90 ° each time the product payout instruction is detected, and the other product with the product is switched. Items are paid out from the column.

Therefore, as seen in Japanese Patent Laid-Open No. 59-186089, when the product column on one side is sold out, the rotary drive system is operated 180 ° in one direction to further sell the product. The rotation range of the cam plate 5 in one selling operation is 90 ° in comparison with the one in which the rotary drive system is further operated 180 ° in one direction to return to the standby state in order to execute the empty payout of the column. As long as the rotation speed of the cam plate 5 is the same, the time required is (1/2) the time required for rotating the cam plate 5 360 ° and delivering one product, and the mechanical system wears. Is small, and even if you pay repeatedly,
Since the time required for one vending operation is shorter than before, a quick payout operation can be realized.

FIG. 10 shows the specific circuit of FIG. 1, and FIG. 11 shows the waveform diagram of the main parts of FIG. Periods a and b show the 0 ° to 180 ° motor-on period and the braking period when one product is dispensed with a half rotation of the cam plate, and periods a ′ and b ′ are the 180 ° to 360 ° motor-on period and the braking period. Is shown.

In each of the above-described embodiments, the case where the product jam occurs in the second product column has been described as an example, but the same applies when the product jam occurs in the first product column.

EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to prevent the sales operation rate from decreasing when one of the left and right product columns is sold out, and to operate the product dispensing device when the product is out of stock. The amount and operating time are reduced to reduce mechanical wear, and even when paying out repeatedly, the time required for one selling operation is shorter than before, so a quick paying out operation is possible. This can be realized and the operation of the flapper type product dispensing device can be improved.

[Brief description of drawings]

FIG. 1 is an electrical block diagram of an embodiment of the product dispensing apparatus of the present invention, FIG. 2 is an operation explanatory view of FIG. 1, FIG. 3 is an operation explanatory view of another embodiment, and FIG. FIG. 5 is a vertical sectional view of the product dispensing device, FIG. 5 is a view taken along the line XX in FIG. 4, and FIG. 6 is an operation explanatory diagram of a conventional product dispensing device taken along the line YY in FIG. 6 and 8 are explanatory views of FIG. 6, FIG. 9 is an explanatory view of product jam, FIG. 10 is a concrete circuit diagram of FIG. 1, FIG. 11 is a waveform diagram of main parts of FIG. The drawing is a vertical cross-sectional view showing another conventional payout process. 1 ... first pedestal, 2 ... second pedestal, 5 ... cam plate,
6 ... Camshaft, 9,10 ... First and second stoppers,
11 ... Cam body, 13,14 ... first and second sold-out detection levers, 15,16 ... first and second switches, 17 ... DC motor, 19b ... microcomputer [control means], 20 ...
… Polarity switching circuit, 21 …… Stop cam switch.

Claims (1)

[Claims] 1. A vertically long product column for stacking and storing products is provided side by side, and a product pedestal having one end pivotally supported along a wall adjacent to the lower end of each product column is provided at each lower end of the product column. A semi-circular cam plate for horizontally supporting the product cradle or rotating the free end downward to hang the product cradle is provided with left and right products along the lower surface of the left and right product cradle. A stopper that is placed so that it can appear and disappear on the column side and that presses the second product from the bottom when carrying out the product at the bottom end to prevent the products other than the product at the bottom end from falling, is placed above each product pedestal. A cam body for activating the stopper is provided on the operation shaft of the cam plate, and the operation of the stopper is interlocked with the operation of the product cradle so that the cam plate straddles both sides of the left and right product columns. From the existing standby position, the right product column Side product column unloading posture completely moved to the left side, and right product column unloading posture completely moved to the left side product column side, and each product has a sold-out detection switch that detects the presence or absence of stored products. Each of them is provided near the lower end of the column, and when the sold-out detection switch detects that the product is sold out, the cam plate is reciprocally rotated by 90 degrees in a direction in which the carry-out posture of carrying out the product column out of the left and right product columns is not performed. A product dispensing device for a vending machine, which is provided with control means for reducing the rotation range of the cam plate compared to before the sold-out detection switch detects the sold-out.