JPH0567997B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a product conveying machine used in a vending machine or the like.

[Conventional technology]

In the conventional product conveying machine shown in FIGS. 1 to 3, reference numeral 1 denotes a pair of left and right stockers, which are separated by a hollow partition frame 2, with a vertical rotating shaft 3 inside the frame 2. The upper and lower parts are supported by appropriate bearings.

A motor 5 and a speed reducer 6 for driving the shaft 3 are provided in the frame 4 at the upper end of the left and right stockers 1.
Near the upper end of the motor control cam 7 and this cam 7.
A motor stop switch 8 is provided which is operated by the motor.

A pedestal 10 is rotatably attached to both sides of the lower end of the partition frame 2 by left and right shafts 9, and a semicircular support cam 11 for supporting the lower part of the pedestal 10 is fixed to the shaft 3.

Windows 12 are provided on both sides of a portion slightly above the lower end of the partition frame 2, and the upper ends of presser plates 14 are swingably attached by shafts 13 at the upper ends of each window 12, and the insides of both presser plates 14 are pushed. A presser foot pressing cam 15 is fixed to the rotating shaft 3.

16 is the vertical axis 1 on the front outer side of the left and right stockers 1.
The door 16 is rotatably attached to the door 16, and the product 18 can be dropped by opening the door 16, putting the product 18 into the stocker 1, and closing it as shown in FIG. 2 using the action of a spring. is prevented.

The relationship between the motor control cam 7 and the motor stop switch 8 is that the cam 11 is
The motor control cam 7 is configured to operate the motor stop switch 8 in the frame 4 in a standby state in which the lower portions of the left and right pedestals 10 are supported as shown in FIGS.

Now, in the standby state shown in FIG. 1, when a payout signal is input to the control circuit of the motor 5 due to the insertion of a coin, the motor 5 starts and rotates the cam 11 together with the shaft 3 in the direction of the arrow in FIG. let

In this way, at the same time as the cam 11 begins to rotate, the presser cam 15 pushes out the presser plate 14 on the left side in the direction of the figure.
When the support cam 11 rotates 90 degrees while pushing the second product 18 from the bottom on the left side to prevent it from falling, the cam 11 completely retracts from the left side of the partition frame 2 as shown in FIG.

As a result, the left pedestal 10 loses its support.
The product 18 at the lowest end rotates downward due to its own weight and is dispensed from the lower end opening of the stocker 1.

The support cam 11 continues to rotate further, and from the beginning,
When one end of the cam 7 presses the switch 8 at the position shown in FIG. 3 after rotating 180 degrees, the motor 5 stops and the cam 11
stops in the standby state shown in FIG. At this time, the pushing of the left presser plate 14 by the presser cam 15 is released, the left product 18 is lowered, and the support cam 1
By receiving the left and right pedestals 10, the left and right products 18 are held in the stocker 1 and placed in a standby state.

Next, when the payout signal is input, the motor 5 rotates the support cam 11 together with the shaft 3 in the same direction, so the cam 11 rotates from the position shown in FIG. 3 in the direction of the arrow from FIG. Cam 7 in position
The other end activates the switch 8 and stops, but during this time the goods in the stocker 1 on the right side are dispensed.

[Problem to be solved by the invention]

As described above, in the conventional device, the support cam intermittently rotates 180 degrees in a fixed direction every time a dispensing signal is input, and the products in the left and right stockers 1 are alternately dispensed. Therefore, the left and right stockers can only accommodate products of the same brand.

Therefore, if it is desired to store a plurality of types of products in a vending machine, two rows of stockers must be accommodated for each type of product, resulting in only half the number of stockers being able to accommodate the types of products.

[Means to solve the problem]

In order to solve the above problems, this invention
The motor for driving the rotating shaft is a reversible motor, and the support cam is symmetrical so that it simultaneously supports the receiving plates of the left and right stockers in the standby position where the motor is stopped. It has a shape that retracts from the bottom of the pedestal on the opposite side when rotated 90 degrees to the right or left from the standby position, and further includes a pair of manually operated brand selection switches that select the rotation direction of the reversible motor, and the support cam. When the support cam is in the standby position, the standby position detection switch is activated, and when the support cam rotates 90 degrees to the right or left, the right or left payout detection switch is activated, and when the support cam turns 90 degrees in the same direction, the other one is activated. A motor control cam that operates the position detection switch is provided on the rotating shaft, and the motor controls the support cam under the condition that any of the brand selection switches described above is operated and any of the standby position detection switches detects the standby position. When the dispensing detection switch detects 90° rotation of the support cam after rotating in the direction corresponding to the selected brand, the drive motor is temporarily stopped, and then the motor is rotated in the same direction to move the support cam to the other side. The configuration includes a control circuit that rotates the motor to the standby position and stops the motor under the condition that the other standby position detection switch detects the standby position.

[Effect]

The product conveyance machine of this invention has the above-mentioned configuration, and in the case of a vending machine, when a specified coin is inserted and a brand is selected by operating the push button of one of the brand selection switches, the reversible motor selects the selected brand. The support cam and presser cam, which were in the standby position, rotated approximately 90 degrees to the right or left in response to the selection switch, and the motor control cam activated the payout switch corresponding to the brand. After stopping once, the motor is further rotated 90 degrees in the same direction, and when the motor control cam activates the other standby detection switch, the motor is stopped. Therefore, it is possible to store products of different brands in the left and right stockers and dispense the desired product by operating the selection switch.

〔Example〕

In one embodiment shown in FIGS. 4 to 8,
The same parts as in the conventional example are given the same reference numerals, and the description thereof will be omitted.

In the case of this embodiment, the support cam 21 and presser cam 25, which are bilaterally symmetrical and fixed to the shaft 3, are formed so as to be symmetrical in the standby position as shown in FIGS. 5 and 6.

The motor control cam 27 fixed to the shaft 3 has a protrusion 28 at one location as shown in FIG. 32 and 33 are fixed in the frame 4 with a phase of 90 degrees, and each switch 31, 32, 3 is connected by the protrusion 28.
3 and 34, and the shaft 3 is rotated clockwise or counterclockwise by a reversible motor 22 and a speed reducer 23.

9 is a motor control circuit, and its input circuit includes a pair of left and right brand selection switches 36, 37.
and each of the above switches 3 to another input circuit.
Connect 1, 32, 33, and 34.

Now, under the condition that the support cam 21 is in one standby position as shown in FIG. 6, and the motor control cam 27 is operating the switch 31 as shown in FIG. 8, for example, by inserting a coin and selecting one side. When the push button of the switch 36 is pressed, the signal is transmitted to the control circuit 35.
When the input is input to , when the support cam 21 is fully retracted from the left side of the partition frame 2, the protrusion 28 of the motor control cam 27 actuates the switch 32.

When the switch 32 is activated as described above, the timer in the control circuit 35 is activated to start the motor 22 approximately.
Pause for 0.5 seconds. During this time, the pedestal 10 on the left side rotates downward, and the lowest product 19 on the left side falls, and the product 19 on top of it falls onto the presser plate 1 pushed out by the cam 25.
It won't fall because it's held down by 4.

A timer causes the motor 22 to run for a certain period of time (e.g.
After stopping for 0.5 seconds and completely discharging the product 19, the motor 22 further rotates to the right, rotates 180 degrees from the beginning as shown in Fig. 6, and when it reaches the other standby position, the protrusion 28 of the cam 27 switches. Press 34 to stop the motor 22 and enter the standby state. As mentioned above, when the push button of one of the brand selection switches 36 is pressed, if the support cam 21 is in one standby position, the motor 22 always starts to rotate clockwise, rotates 90 degrees, stops for a certain period of time, and then rotates another 90 degrees. The control circuit 35 is arranged so that it rotates clockwise to the other standby position.

Further, when the support cam 21 is in one standby position as shown in FIG. 6, when a coin is inserted and the push button of the other brand selection switch 37 is pressed, the motor 22 starts and starts rotating counterclockwise. The support cam 21, which was in the standby position as shown in Fig. 6, rotates 90 degrees to the left and moves to the opposite position as shown in Fig. 6.
The control circuit is constructed so that the product stops for 0.5 seconds, and during this time the product in the stocker on the right side is dispensed, then continues to rotate counterclockwise, returns to the other standby position, and stops, as shown in Figure 6.

Further, when the support cam 21 is in the other standby position as shown in FIG. 7, when the push button of the brand selection switch 37 is pressed in the opposite way, the motor 22 starts to rotate clockwise and rotates 90 degrees, as shown in FIG. This is one of the standby positions.

When the push button of the brand selection switch 36 is pressed at the other standby position in FIG. A control circuit is constructed so that the product 19 on the left side is dispensed since it is at one standby position in the figure. That is, motor 2
2, the rotation direction is determined by two conditions: the operating states of the selection switches 36, 37 and the switches 31, 34 as standby position detection means, and the support cam 21 and presser cam 25 are rotated in a predetermined direction to select the desired product 19.
Or pay out 20.

Therefore, different products 1 are placed on the left and right stockers 1.
9 and 20 are stacked and stored, respectively, and a desired product in the stocker 1 can be dispensed by pushing the selection switches 36 and 37.

Note that the switches 31, 32, 3 shown in FIG.
3, 33, and 34 are shaped like limit switches having a mechanical structure, but it goes without saying that various detection means other than such switches can be used.

〔effect〕

Since the product conveyance machine of the present invention has the above-mentioned configuration and function, the basic configuration of the known type of conveyance machine remains the same, and the motor is of a forward and reverse type, and the product support cams are configured to have left and right symmetry. And when it rotates 90 degrees to the right or left from the standby position, it is retracted from the bottom of the pedestal on the opposite side, and the rotation angle of the support cam is detected and the position is changed to one standby position or the other standby position. By providing a switch that detects the position and whether the right or left product has been dispensed, products of different brands can be stacked on the left and right stockers and the desired product can be freely dispensed. By attaching the conveyor of this invention to a vending machine, it is possible to dispense twice as many types of products in the same space as a conventional stocker. During the dispensing operation, the support cam
Because it rotates 180 degrees, the number of rotational changes is halved compared to a device in which the support cam rotates 90 degrees forward and backward for each dispensing operation, making the dispensing operation smoother and faster. It has unique effects such as less wear on the motor and less heat generated by the motor.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional product conveyance machine with a portion cut away and partially cut away, Fig. 2 is a cross-sectional plan view of the same as above, and Fig. 3 is a plan view of each process showing the operation of the cam as above. , FIG. 4 is a partially cutaway and partially longitudinally sectional front view of the product conveyance machine of the present invention, FIG. 5 is a cross-sectional plan view of the same as the above, and FIGS.
In the figures, , , and are plan views showing the operation of the same cam according to each process, FIG. 8 is a layout diagram of a switch showing an example of means for detecting the orientation of the support cam, and FIG. FIG. 3 is a block diagram showing the circuit. 1...Stocker, 3...Axis, 5...Motor,
10... cradle, 11, 21... support cam, 14...
...Press plate, 15,25...Press cam, 18,1
9, 20...Product, 22...Reversible motor, 31,
34...Standby detection switch, 32, 33...Payout detection switch, 35...Control circuit, 36, 37...
...brand switch.

Claims (1)

[Claims] 1. Products are stacked in a line in a pair of stockers on the left and right, and a vertical rotating shaft driven by a motor is provided between the two stockers. A supporting cam that appears and retracts and a presser cam that pushes a presser plate that appears and retracts from the side of the product on the product on the pedestal are fixed, and the support cam advances to the bottom of the pedestal and supports the pedestal. When the presser cam is in the unloading state, the presser cam is retracted, and the support cam is retracted and the cradle rotates downward.
In a product conveying machine configured such that a presser cam presses a presser plate to prevent a product above the product being delivered from falling, the motor for driving the rotating shaft is a reversible motor, and the motor is stopped. In the standby position, the support cams are symmetrical so that they simultaneously support the left and right stocker receiving plates.
And this support cam moves from the standby position to the right or left.
It has a shape that retracts from the bottom of the pedestal on the opposite side when rotated 90 degrees, and further includes a pair of manually operated brand selection switches that select the rotation direction of the reversible motor, and a standby position detection when the support cam is in the standby position. Operate the switch to move the support cam to the right or left.
A motor control cam is installed on the rotating shaft, which activates the right or left payout detection switch when rotated 90 degrees, and activates the other standby position detection switch when rotated 90 degrees in the same direction, and selects one of the brands listed above. When the switch is operated and one of the standby position detection switches detects the standby position, the motor rotates the support cam in the direction corresponding to the selected brand, and the dispensing detection switch detects the support cam.
When a 90° rotation is detected, the drive motor is temporarily stopped, and then the motor is rotated in the same direction to rotate the support cam to the other standby position, and this other standby position detection switch detects the standby position. A product conveyor equipped with a control circuit that stops the motor under certain conditions.