JPS5820144Y2 - Protection device for torque control switch in frozen dessert making machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a frozen confectionery manufacturing machine that manufactures snow-like sweets made from carbon dioxide, syrup, and water, soft-serve ice cream made from a so-called mix, and products similar to these. In particular, the present invention relates to a device in which cooling operation is controlled by a torque control switch in order to maintain appropriate hardness of frozen desserts formed in a freezing cylinder.

Conventionally, in this type of frozen dessert making machine, when the liquid stock solution supplied into the freezing cylinder becomes moderately hard, a torque is generated from the stirring device placed inside the cylinder and installed on the output shaft that passes through the rear wall of the cylinder. It is configured so that it can be detected by a detection mechanism.

That is, the actuating member that is part of the torque mechanism moves rearward due to the torque generated by the product curing, and the actuator of the torque control switch is pressed by the operating piece of the member, thereby controlling the cooling operation to be stopped. There is.

When the torque decreases again, the actuating member returns to its normal state, the switch is no longer pressed, and the cooling operation is resumed.

Although the cooling operation is controlled in the manner described above, there is inevitably a slight lag between the timing at which the switch is turned off and the timing at which the cooling operation stops, resulting in the refrigeration cylinder becoming slightly overcooled and the torque increasing even after the switch is turned off. become.

The operating member then moves further rearward from the switch-off position.

In such a case, the switch has no place to escape and is crushed and destroyed by the operating piece of the operating member, resulting in the disadvantage that the switch becomes uncontrollable and the machine is damaged. It could happen.

In view of this, the present invention is to provide a device that reliably protects the torque control switch from destruction. We will explain the case when it is implemented.

As shown in Fig. 1, 1 is a carbon dioxide gas cylinder, which is connected to a regulator 2 for adjusting the discharge amount and pressure, a carbon dioxide valve 3, a closed relay tank 4, and a refrigeration system refrigerant pipe 5 wrapped around it. Connect to cylinder 6.

7 is a syrup tank that stores liquid syrup, and is connected to the suction side of the pump device 8.

A water tank 9 stores a predetermined amount of water supplied from the tap, and is connected to the suction side of the pump device 8.

Further, the discharge side of the pump device 8 is connected to the refrigeration cylinder 6 via the relay tank 4 along the same route as the carbon dioxide cylinder 1.

Reference numeral 10 denotes a raw material supply pressure switch that indirectly senses the pressure state inside the freezing cylinder 6 by being connected to the relay tank 4, and controls the supply of carbon dioxide, syrup, and water to the freezing cylinder 6.

11 is a service cock for taking out the product.

Furthermore, 12 is an electric compressor that constitutes a refrigeration system together with the refrigerant pipe 5, and 13 is a condenser.

Reference numeral 14 denotes a stirring device disposed within the freezing cylinder 6, and an output shaft 15 of the device 14 passes through the rear wall 6a of the freezing cylinder 6 via a bearing 16.

A rotating member 17 having a circular circumferential surface is fixed to the output shaft 15, and a conical groove 18 is formed in the end surface of the rotating member 17.

Reference numeral 19 denotes an operating member fitted so as to be in contact with the circumferential surface and end surface of the rotating member 17, and the rotating member 1 is normally fitted on the end surface.
A conical groove 20 corresponding to the groove 18 on the side 7 is formed, and a hard ball 21 is formed between the grooves 1B and 20.
is intervening.

A through hole 22 is formed in the actuating member 19 so as to maintain mutual contact between the end surfaces of the actuating member 19 and the rotating member 1γ, and a screw 24 is inserted into the through hole 22 from the outer surface via the spring body 23. and is coupled to a screw hole 25 formed in the end face of the rotating member 17.

Therefore, by the action of the spring 230, the actuating member 19 presses against the rotating member 17 and is held in contact with the rotating member 17.

A continuous V-shaped groove 26 in cross section is formed on the outer peripheral surface of the residual operating member 19.
A V-belt 27 is formed in the line groove 26, and the power of a drive device (not shown) is transmitted to the actuating member 19 via the V-belt 27.

Further, the rotation of the actuating member 190 is transmitted to the rotating member 1γ via the ball 21 and rotated, and finally the power for rotation is transmitted to the stirring device 14.

Note that the through hole 22 is a hole formed in a crescent shape in the rotation direction.

Furthermore, the actuating member 19 has an actuating piece 28 projecting rearward from the center of its outer surface, and the electric compressor 1 is attached to this actuating piece 28.
The actuator 29a of the automatic return type torque control switch 29 that controls the operation of No. 2 is made to correspond to the actuator 29a.

The switch 29 is supported on a base plate 33 fixed to a movable plate 32 whose one end is pivotably supported on an angle 30 .

Further, the upright plate 34 is extended from the upper end side of the movable plate 32,
A front control plate 35 and a rear control plate 36 are extended from the angle 30, and the standing plate 34 is positioned between them.

and respective boards 34 and 35. 36 with a bolt 37, so that only the standing plate 34 is free from the bolt 31.

Furthermore, a holding spring 38 wound around a bolt 37 is interposed between the upright plate 34 and the rear control plate 36, and normally the movable plate 3
2 is pushed forward and stopped at the position where it abuts the front control plate 35.

This state is the normal corresponding position of the actuator 29a and the operating piece 28.

Next, the operation of the present invention will be explained.

First, by operating the pump device 8 and opening the carbon dioxide valve 3, carbon dioxide, syrup, and water are supplied into the freezing cylinder 6.

When the pressure switch 10 detects that seven fixed quantities of these have been supplied, the pump device 8 and the carbon dioxide gas valve 3 are deactivated to stop the supply of the stock solution.

On the other hand, the stock solution supplied to the freezing cylinder 6 is cooled by operating the electric compressor 12, and the stirring device 1
While being stirred by step 4, it becomes a setta product.

Then, as the product hardens, the torque gradually increases, and this torque is transmitted to the actuating member 1 through the ball 21.
9, the actuating member 19 moves rearward against the spring body 23 and the actuating piece 28 closes the control switch 2.
9 actuator 29a is pressed.

Then, the switch 29 stops the electric compressor 12 and stops the cooling operation.

However, the timing at which the electric compressor 12 stops is slightly delayed from the timing at which the control switch 29 is turned off.

That is, the refrigeration cylinder 6 becomes slightly supercooled, so that the torque further increases.

The actuating member 19 then moves further rearward, and the actuating piece 28 further pushes the actuator 29a.

Then, the movable plate 32 to which the control switch 29 is attached drills into the holding spring 38 and rotates backwards about the shaft 31, and as a result, the control switch 29 retreats from its normal position, and the switch is turned off. 29 from abnormal pressing of the operating piece 28 (the state shown in FIG. 3).

In the above-mentioned embodiment of the present invention, the movable plate 32 is configured to be rotatable and the control switch 29 is retracted. However, as another embodiment of the present invention, as shown in FIG. The moving plate 32 in the above embodiment
It may be constructed symmetrically with the upper support structure, and in this case, the movable plate 32 moves horizontally backward and the controllers 29 and 29 also move horizontally, so the structure is similar to the above embodiment. be effective.

This invention has a protection device for the torque control switch that is configured and operates as described above, so it can reliably protect the switch even if an abnormally large torque is applied, and it is extremely practical as it can reliably prevent the switch from being destroyed. Play the advantage.

This is a practical torque control switch protection device that can reliably stop the cooling operation because even if the switch moves backward due to abnormal torque caused by the actuator, the operating piece does not come off the actuator and remains in the pressed state. .

Furthermore, although the protection device of the present invention is applied to a frozen dessert manufacturing machine that uses carbon dioxide gas, syrup, and water as raw materials, it is also applicable to various types of machines that manufacture soft serve ice cream and similar products that use so-called mixes as raw materials. Can be widely implemented in frozen dessert making machines.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of a frozen dessert manufacturing machine equipped with the device of the present invention, Fig. 2 is an enlarged view of the main parts of the device of the present invention with a part cut away, Fig. 3 is an explanatory diagram of the operation, and Fig. 4 is a diagram of the device of the present invention. FIG. 7 is an explanatory diagram of main parts showing another embodiment. 29°°・Torque control switch, 19... Operating member, 38... Holding spring body.

Claims (1)

[Scope of utility model registration request] A freezing cylinder for cooling the supplied liquid stock solution and a stirring device for stirring the liquid stock solution cooled in the cylinder are provided, and a rotating member fixed to the output shaft of the stirring device passing through the rear wall of the cylinder is provided. An actuating member is provided that presses through the spring body, and the rotation of the drive device is transmitted to the actuating member through the belt, and the rotation of the actuating member is transmitted to the rotating member and finally to the stirring device. An actuator of an automatic return type torque control switch is connected to an actuating piece projecting rearward from the actuating member, and the actuating member causes the actuating member to actuate the spring of the spring body by the torque generated as the product hardens. In a frozen dessert making machine that moves backward against a force and presses the actuator of the switch with the actuating piece to stop the cooling operation, the point in time 1 when a predetermined torque is applied to the actuating member. Then, a holding spring is provided to hold the switch so that the switch does not move, and when a torque larger than a predetermined value is applied to the actuating member due to abnormal hardening of the product, the switch is held against the tension force of the holding spring. A protection device for a torque control switch in a frozen dessert making machine, characterized in that the actuating piece causes the switch to retreat.