JPH0632122B2 - Vending machine product delivery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a product delivery device for a vending machine.

(B) Conventional technology Conventionally, a drive shaft that makes a predetermined reciprocating rotation by forward / reverse rotation of an electric motor for each sales command is vertically installed in a product storage column,
A product passage for stacking and storing products is formed on both sides of the drive shaft, and a delivery device for controlling delivery of the product in the product passage by the predetermined rotation of the drive shaft is provided under the drive shaft. There is one that sends out a product in one of the product passages in accordance with the sales command based on the operation of the product selection switch provided corresponding to each of the products, which is disclosed in, for example, JP-A-60-101694. In such a structure, a control cam is provided on the drive shaft and a detection switch is provided opposite to the control cam to control the forward / reverse rotation drive of the electric motor.

(C) Problem to be Solved by the Invention In the case of the configuration of the control cam and the control switch according to the related art, the control units of the control cam for operating the control switch are provided at 90 degree intervals, and the control cam is normally rotated by a sales command. Or, it rotates reciprocally by reversing 90 degrees, but since all the control units operate in the same manner with the control switches in the ON or OFF state, which control unit is in the sales standby position, and also rotates 90 degrees. It was impossible to determine whether it was the product delivery position. Therefore, for example, if a power failure or the like occurs at a position rotated by 90 degrees, a reciprocating rotation of 90 degrees is performed with the position rotated by 90 degrees as a sales standby position at the time of energization, resulting in defective delivery of products.

Therefore, the present invention provides a product sending device of an automatic vending machine which can surely determine the turning position of the control cam.

(D) Means for Solving the Problem The present invention is to install a drive shaft vertically reciprocally rotated by forward / reverse rotation of an electric motor for each sales command in a product storage column, and to both sides of this drive shaft. A product passage for stacking and storing products is formed, and a delivery device for controlling delivery of products in the product passage by the predetermined rotation of the drive shaft is provided below the drive shaft, and provided corresponding to each product passage. In an automatic vending machine which sends out a product in one of the product passages in response to the sales command based on the operation of the product selection switch, it is provided so as to rotate in association with the rotation of the drive shaft. A control cam, a plurality of detection switches that are provided corresponding to the control cam and that detect a rotational position of the control cam and output a detection signal, and control the drive of the electric motor based on the detection signals of the detection switches. Control hand The control cam includes a step of waiting for the product vending machine of the sending device, a product sending position of one product passage side, a product sending position of the other product passage side, and a product selling standby position and a product sending position. ON / OFF by the plural detection switches at the intermediate position of
A control unit that operates in different modes is provided.

(E) Action A plurality of detection switches provided facing the control cam are controlled by the control unit provided on the control cam to, for example, OF at the product standby position.
F / OFF, OFF / ON at the product delivery position on one product passage side, ON / OFF at the product delivery position on the other product passage side, and between the product standby position and the product delivery position. At the intermediate position, it is turned ON and ON, and the position of the control cam is detected by the detection switch.

(F) Embodiments Each drawing shows an embodiment of the present invention. Reference numeral 1 denotes a product storage column having a U-shaped cross section, which is provided with a product filling opening 2 on the front face and a product delivery port 3 at the lower end, and is vertically installed in the vending machine body.

A drive shaft 4 is rotatably provided vertically in the product storage column 1. The drive shaft 4 is connected to the electric motor 5 at its upper end, and on both sides of the drive shaft 4, a product passage 6 for accumulating and storing products in a line. 7 is provided. A semi-disk shaped delivery port control cam 8 and a locking control cam 9 above the delivery control cam 8 are provided at the lower part of the drive shaft 4, and the delivery control cam 8 is provided on both sides with corresponding delivery members 10. , 10 to control the locking control cam 9
Controls the locking members 11, 11 on both sides.

The delivery member 10 is axially supported on the side wall 1A side of the product storage column 1 corresponding to the delivery control cam 8, and when the delivery control cam 8 instructs the lower surface thereof, extends substantially horizontally into the product passages 6, 7. The lowest product in the product passages 6 and 7 can be placed and supported, and when the support by the delivery control cam 8 is released, the product rotates downward and drops and delivers the lowest product.

The locking member 11 pivotally supports the upper end of the side wall 1A of the product storage column 1 corresponding to the locking control cam 9, and the side surface is supported by the locking control cam 9 when the shipping member 10 sends the product. When pressed, the lower part pivots and extends inwardly of the product passages 6 and 7, so that the product at the next stage of the lowest product delivered by the delivery member 10 can be locked and supported.

That is, in the product sale standby position, the delivery control cam 8 is positioned so as to support the delivery members 10, 10 on both sides, and the delivery members 10, 10 extend into the product passages 6, 7 in a substantially horizontal state. Also, the locking control cam 9 is the locking member 1 on both sides.
The locking members 11, 1 are located at a position extending forward and backward between the locking members 11, 1.
1 is retracted to the outside of the product passages 6 and 7, respectively. At the product delivery position where the drive shaft 4 is rotated by 90 degrees, one delivery member 10 is released from the support by the delivery control cam 8 and the lowest product is delivered by dropping.
The locking member 11 on 0 is pushed and extended into the product passage 6 or the product passage 7 by the locking control cam 9 so that the product at the next stage is neglected.

Reference numeral 12 denotes a control cam whose lower part is fixed to the upper end of the drive shaft 4 and whose upper part is connected to the electric motor 5. The control cam 12 transmits the drive of the electric motor 5 to the drive shaft 4 and has two outer faces opposed to each other. A control unit 15 for turning ON / OFF the detection switches 13 and 14 is provided. The control unit 15 is a surface of the control cam that comes into contact with the detection rods 13A and 14A of the detection switches 13 and 14, respectively, and when the drive shaft 4 is in the product sale standby position, the detection switches 13 and 14 respectively. An operation unit 15A that operates the detection rods 13A and 14A by immersing the detection rods 13A and 14A into the OFF state.
When the drive shaft 4 is forwardly rotated by the forward rotation of the electric motor 5 to deliver the product on the product passage 6 side and is in the product delivery position rotated by 90 degrees, only the detection rod 13A of the detection switch 13 is immersed. And an operation unit 15B that turns off the detection switch 13 and turns on the other detection switches 14,
When the drive shaft 4 is rotated in the reverse direction by the reverse rotation of the electric motor 5 to deliver the product on the product passage 7 side and is in the product delivery position which is rotated by 90 degrees, only the detection rod 14A of the detection switch 14 is retracted. When the operation unit 15C that turns off the detection switch 14 and turns on the other detection switches 13 and the drive shaft 4 is at an intermediate position between the product sale standby position and the product delivery position for delivering the product on the product passage 6 side. Each detection switch 1
The operating unit 15D for turning on the motors 3 and 14 and the drive shaft 4
Is at an intermediate position between the product sale standby position and the product delivery position for delivering the products on the product passage 7 side.
An operation unit 15E for turning ON the power supply terminals 3 and 14 is provided.

FIG. 7 is a block diagram of the control circuit of the device of the present invention.
6 is a product selection switch provided corresponding to the product passage 6, 1
7 is a product selection switch provided corresponding to the product passage 1, 1
8 is a detection switch 13 or 14 when a product selection signal is input from the product selection switch 16 or 17 or the power is turned on.
Is a microcomputer that checks the input state of the detection signal from the control circuit, operates according to the program stored in the ROM 19 according to the input state of the detection signal, and drives and controls the electric motor 5.

Next, the operation of the above configuration will be described with reference to the flowcharts of FIGS. 8 and 9. When the power is turned on, the microcomputer (hereinafter abbreviated as MPU) 18 checks the input state of the detection signals from the detection switches 13 and 14. At this time, if the detection switches 13 and 14 are in the OFF state, the drive shaft 4 is at the predetermined product sale standby position.
The MPU 18 waits for the input of the product selection signal in S111.
Further, when the detection switch 13 is ON, the detection switch 14
Is OFF, the MPU 18 drives the electric motor 5 in the normal direction until the detection switch 13 is turned OFF.
01, S103, S105, S108, S110 of rotating the drive shaft 4 to the product sale standby position and stopping it. When the detection switch 13 is in the OFF state and the detection switch 14 is in the ON state, the MPU 18 drives the electric motor 5 in the reverse direction until the detection switch 14 is in the OFF state S101, S1.
02, S106, S109, S110 of rotating the drive shaft 4 to the product sale standby position and stopping it. Furthermore, when the detection switches 13 and 14 are in the ON state, S101, S103,
The MPU 18 reversely drives the electric motor 5 until the detection switch 14 is turned off, and stops the electric motor 5 when detecting the off state (S104, S107, S110).
That is, when a detection signal other than the OFF / ON state in which each of the detection switches 13 and 14 detects that the drive shaft 4 is in the product sale standby position is input, each of the detection switches 13 and 14 is input.
Depending on the state, the MPU 8 drives the electric motor 5 in the forward or reverse direction to position the drive shaft 4 at a predetermined product sale standby position.

Here, for example, the product selection switch 16 after the predetermined money is inserted.
Is operated and a product selection signal is input to the MPU 18, the MPU 18 drives the electric motor 5 in the normal direction. Therefore, the drive shaft 4 is rotated in the forward direction, and the locking member 11 on the product passage 6 side is moved by the locking control cam 9 in accordance with this rotation.
The product A2 is pushed and rotated inward to lock the product A2 at the next stage of the lowest product A1. When the drive shaft 4 rotates 90 degrees, the support of the delivery member 10 on the side of the product passage 6 supported by the delivery control cam 8 is released, and the delivery member 10 rotates downward to support the placement. The lowest order product A1 is dropped and sent out.

On the other hand, due to the normal rotation of the drive shaft 4, the respective detection switches 13 and 14 are turned on by the operating portion 15D of the control cam 12, and when the drive shaft 4 rotates forward by 90 degrees, the detection switch 13 operates. Is turned off at S113,
S114. In this state, that is, the detection switch 13 is off
If the detection switch 14 is in the ON state, the MPU 18
Stops the normal rotation drive of the electric motor 5. Then, at this product delivery position, the electric motor 5 is stopped for a predetermined time of about 1 second, and S
115, after which the MPU 18 starts reverse rotation driving S116.

By the reverse drive of the electric motor 5, the delivery control cam 8 supports the delivery member 10 on the product passage 6 side in the horizontal state again, and after this support, the engagement control cam 9 presses the engagement member 11 to rotate. The product A2 at the next stage, which has been released from the motion and has been locked by the locking member 11, is dropped and placed on the delivery member 10 and supported to become the lowest product A1.

On the other hand, when the drive shaft 4 is rotated in the reverse direction, the detection switch 13 is first turned on in the operation unit 15D in S117. When the drive shaft 4 is rotated in the reverse direction by 90 degrees and returned to the product sale standby position, the detection switches 13, Since S14 is turned off by the operating unit 15A in S118, the MPU 18 stops the electric motor 5 in S119.

When the product selection switch 17 is operated in S111, the electric motor 5 is reversely driven in S120, the drive shaft 4 is rotated in the reverse direction, and the lowest product A1 on the product passage 7 side is dropped and sent out S121. , S122, S123, and S124, S125, S that are rotated in the normal direction and returned to the sale standby position.
126, S119.

(G) Effect of the Invention Since the present invention is configured as described above, the position of the drive shaft can be reliably determined by detecting the control cam by a plurality of detection switches. Therefore, even if the product delivery device is stopped during operation due to a power failure or the like, it is possible to automatically return from the stopped position to the product sale standby position by turning on the power again.

[Brief description of drawings]

Each drawing shows an embodiment of a product delivery device according to the present invention. FIG. 1 is a vertical sectional front view of a product sales standby state, FIG. 2 is a sectional view taken along line BB of FIG. 1, and FIG. 1 is a cross-sectional view taken along the line CC of FIG. 1, FIG. 4 is a vertical sectional front view of a product delivery state, FIG. 5 is a plan view showing the relationship between a control cam and a detection switch, FIG. 6 is the same perspective view, and FIG. FIG. 8 is a block diagram of the control circuit, and FIGS. 8 and 9 are operation flowcharts. (4) ... Drive shaft, (5) ... electric motor, (12) ... control cam, (13) (14) ... detection switch, (15) ... control section, (15A) (15B) ( 15C) (15D) (15E)
...... Operation part, (18) …… Microcomputer.

Claims (1)

[Claims] 1. A drive shaft for reciprocating a predetermined rotation by forward / reverse rotation of an electric motor for each sale command is vertically installed in a product storage column, and product passages for stacking and storing products are formed on both sides of the drive shaft. In addition, a delivery device that controls delivery of the products in the product passage by the predetermined rotation of the drive shaft is provided under the drive shaft, and the delivery device is provided based on the operation of the product selection switch provided corresponding to each of the product passages. Corresponding to a control cam and a control cam provided to rotate in conjunction with the rotation of the drive shaft in an automatic vending machine that sends out a product in one of the product passages according to a sales command A plurality of detection switches that are provided to detect the rotational position of the control cam and output a detection signal, and a control unit that controls the drive of the electric motor based on the detection signals of the detection switches.
The control unit, which is a surface of the control cam that comes into contact with each of the detection rods of the plurality of detection switches, has a state in which the delivery device is in a product sales standby state and a state in which one of the product passages is in a product delivery state. , ON / OF of the plurality of detection switches when the product is on the other product passage side and when it is in the intermediate state between the product sale standby state and the product delivery state.
An article sending device for a vending machine, characterized in that an operation part which comes into contact with the detection rod is formed so that the F aspects are different from each other.