JPH0567996B2 - - 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 held down. A pushing 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 such that the cam 11 is connected to the left and right cradle 1 as shown in FIGS. 1, 2, and 3.
The motor control cam 7 operates the motor stop switch 8 in the frame 4 in a standby state in which the lower part of the motor is supported.

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. 3. 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, when it is desired to store a plurality of types of products in a vending machine, it is necessary to store two stockers for each type, 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 supports the receiving plates of the left and right stockers at the same time in the standby position where the motor is stopped, and this cam is in the standby position. 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 position, and a pair of manually operated brand selection switches that select the rotation direction of the reversible motor, and the support cam are on standby. Activate the standby position detection switch when the
A motor control cam is provided on the rotating shaft that activates a right or left payout detection switch when the support cam rotates 90 degrees to the right or left, and when one of the brand selection switches is operated, the standby position is detected. Under the condition that the switch detects the standby position, the motor rotates the support cam in the direction corresponding to the selected brand, and when the dispensing detection switch detects 90° rotation of the support cam, the drive motor is temporarily turned off. The configuration includes a control circuit that stops the motor, then reverses the motor, rotates the support cam to the original position, and stops the motor under the condition that the 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 are in the standby position, move to the right or left depending on the selection switch.
When it rotates 90 degrees and the motor control cam acts on the payout switch corresponding to the brand, it stops briefly and then returns to its original position, and when the motor control cam acts on the standby detection switch, it stops the motor. 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.
33 are fixed in the frame 4 at a 90° phase, and each switch 31, 32, 33 is actuated by the protrusion 28, and the shaft 3 is rotated clockwise or counterclockwise by the reversible motor 22 and 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, and 33.

Now, the support cam 21 is in the standby position as shown in FIG. 6, and the motor control cam 2 is in the standby position as shown in FIG.
7 is operating the switch 31, for example, when a coin is inserted, the push button of one selection switch 36 is pressed, and the signal is input to the control circuit 35, the motor 22 starts and starts rotating clockwise. The support cam 21 and motor control cam 27 are rotated clockwise together with the shaft 3, and this cam 21 is rotated 90 degrees to the right as shown in FIG.
When fully retracted from the left side of the motor control cam 27, the protrusion 28 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 starts rotating counterclockwise, rotates 90 degrees and returns to its original position as shown in FIG. Press to stop the motor 22 and enter the standby state. As mentioned above, the control circuit 35 is constructed so that whenever the push button of one brand selection switch 36 is pressed, the motor 22 starts rotating clockwise, rotates 90 degrees, stops for a certain period of time, then reverses and returns to its original state. ing.

Furthermore, when a coin is inserted and the push button of the other brand selection switch 37 is pressed, the motor 22 is activated and begins to rotate counterclockwise.The support cam 21, which was in the standby position in FIG. The control circuit is set up so that after reaching the position shown in Figure 7 and stopping for a moment (about 0.5 seconds) by a timer, it starts rotating clockwise, returns to its original position as shown in Figure 7, and stops. .

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 is shaped like a limit switch having a mechanical structure, but it goes without saying that various detection means other than such a switch can be used.

〔effect〕

Since the product conveyance machine of the present invention has the above-described structure and operation, the basic structure 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 be left and right symmetrical. It is shaped so that when it rotates 90 degrees to the right or left from the standby position, it retracts from the bottom of the pedestal on the opposite side, and detects the rotation angle of the support cam to determine whether it is in the standby position or whether it is on the right or left side. By providing a switch to detect whether a product has been dispensed, products of different brands can be piled up on the left and right stockers, and a desired product can be freely dispensed using a brand selection switch. By attaching it to a vending machine, it has the unique effect of being able to dispense twice as many types of products in the same space as a conventional stocker.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional product conveyance machine with a part cut away and a partial longitudinal section; Fig. 2 is a cross-sectional plan view of the same as above; Fig. 3 is a plan view of each process showing the cam operation as above; Fig. 4 is a front view with a part cut away and a longitudinal section of the product conveyance machine of the present invention, Fig. 5 is a cross-sectional plan view of the same as above, and , , , of Fig. 7 are the same as above. FIG. 8 is a layout diagram of a switch showing an example of means for detecting the orientation of the support cam, and FIG. 9 is a block diagram showing the circuit of the product conveyance machine of the present invention. be. 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...
...Standby detection switch, 35...Control circuit, 36,
37... Stock selection 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 pushes out a presser plate to prevent the product above the product 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 that activates a right or left payout detection switch when rotated by 90 degrees is provided on the rotating shaft, and when one of the brand selection switches is operated,
Under the condition that the standby position detection switch detects the standby position, the motor rotates the support cam in the direction corresponding to the selected brand, and when the dispensing detection switch detects 90° rotation of the support cam, the drive is activated. This product conveyor is equipped with a control circuit that temporarily stops the motor, then reverses the motor, rotates the support cam to its original position, and stops the motor under conditions in which a standby position detection switch detects the standby position.