KR100432469B1 - Feeder Reciprocating Apparatus of Food Slicer - Google Patents

Abstract

The present invention prevents rocking of the food slicer due to the reciprocating movement of the feeder. The rotating cutter and the feeder for feeding the food are provided, and the feeder is not faced to the moving end and the circular cutter. Connected to the feeder reciprocating drive mechanism including a crank mechanism, and when the feeder returns and returns to the return stage, the food set in the feeder is supplied with a cutting thickness, and the feeder moves to move the feeder stage. In the food slicer in which the food tip protruding to the feeder tip is cut by the circular cutter while rotating, the returning feeder becomes the maximum speed (V2) when the crank shaft of the crank mechanism is rotated at a constant speed. It is possible to reduce the maximum speed during the return of the feeder by decelerating the rotation speed of the crankshaft only in the vicinity of the starting point. It provides a reciprocating air supply driving the device.

Description

Feeder Reciprocating Apparatus of Food Slicer}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reciprocating a feeder in a food slicer for cutting food such as meat.

The food slicer for meat is provided with the rotating circular cutter and the feeder which supplies food. The feeder is capable of reciprocating between a moving end that faces the circular cutter and a return end that does not face the circular cutter, and is connected to an electric motor via a crank mechanism. The number of round trips of the feeder per unit time is adjustable according to the rotational speed of the motor.

When the operation switch is inserted, the circular cutter is driven to rotate. In addition, the feeder is reciprocally driven between the moving end and the returning end. Each time the feeder returns and returns to the return stage, the food set in the feeder is fed by the cutting thickness. Each time the feeder moves and reaches the moving end, the food tip protruding from the feeder tip is cut by the rotating circular cutter.

When the operation switch is blocked, the rotary drive of the circular cutter is stopped and the circular cutter is inertia rotated to stop. The feeder continues to move or return without stopping the drive of the motor. When the feeder reaches a position slightly ahead of the moving end, the motor is stopped and braked, and the feeder is braked to stop at the return end.

However, in order to improve the cutting efficiency of the food, if the number of food cuts per unit time is increased according to the feeder reciprocating number per unit time, and the high speed operation, the inertial force generated in the feeder during the reciprocating movement is increased and the food is reciprocated by the feeder reciprocating movement. The slicer may swing.

Therefore, in order to suppress the fluctuation of the food slicer by the reciprocating movement of the feeder at the time of high speed operation, as disclosed in Japanese Patent Laid-Open No. 11 (1999) -198096, the position just before the feeder reaches the moving stage. A feeder speed control device has been invented which decelerates the traveling speed of the feeder between positions from which the feeder has passed through the return stage.

Next, the problem which this invention is going to solve is demonstrated.

1) In the feeder speed control device as described above, since the distance for decelerating the feeder at high speed operation is very long, which is longer than half of one round trip distance of the feeder between the position just before the feeder's moving end and the passing position of the returning end, When the feeder reciprocation number per unit time is made the same as in the conventional case in which the feeder during the reciprocating movement is not decelerated on the way, the moving speed at which the feeder travels from the passing position of the return stage to the position immediately before the moving stage becomes very high. The reciprocating speed for cutting food in the feeder becomes very high.

Therefore, while the feeder during the reciprocating movement decreases inertia force due to deceleration at the time of return, the inertia force is greatly increased due to the increase in speed during movement. In this case, the food slicer oscillates by the inertial force generated in the feeder during movement, not by the inertial force generated in the feeder during return. In addition, when the moving speed for cutting the food of the feeder becomes very high, the rotational speed of the circular cutter must be made high in correspondence with the high speed of the feeder, thereby increasing the capability of the rotary drive of the circular cutter.

In other words, it is difficult to increase the food cutting number per unit time to improve the cutting efficiency of the food.

2) In the above-mentioned food slicer, if the range for adjusting the number of cuts of food per unit time is widened, the non-uniformity of the stop position of the feeder increases according to the non-uniformity of the braking distance when stopping the feeder at the return stage. It becomes difficult to stop.

For this reason, this invention focused on the following points in order to solve the said subject.

1) In the conventional food slicer as described above, the feeder is reciprocally driven by a crank mechanism in which the crank shaft is rotated by an electric motor. When the crankshaft is rotated at a constant speed, the traveling speed of the feeder changes to a substantially sinusoidal shape, as shown by the solid line in FIG. 5, reaches the maximum speed V1 during movement, and the maximum speed V2 during return. ) The maximum speed V2 during the return is larger than the maximum speed V1 during the movement. The time T1 from the zero speed of the return stage to the maximum speed V1 during the movement, and the time T2 from the maximum speed V2 during the return to the zero speed of the return stage. Is approximately the same.

Therefore, when the feeder divides the reciprocating path at four points of the return stage, the position at which the maximum speed V1 is generated during the movement, the position at the movement stage, and the maximum speed V2 during the return, the maximum speed V2 is being returned. The average acceleration (absolute value) (V2 / T2) from to the zero velocity of the return stage becomes the largest and the average value of the inertia force becomes the largest. The inertial force generated in the feeder during the return period becomes the main force, and the food slicer swings.

Therefore, in order to reduce the average value of the inertia force during the return period to be the maximum, the deceleration is commanded to the rotational drive control device of the motor for a short time T from the time when the feeder becomes the maximum speed V2 during the return. Since the electric motor is still running while the electric motor is decelerated, the motor is slowly decelerated by the inertia of the feeder and its reciprocating drive mechanism. Moreover, even if it receives a deceleration end instruction, it does not immediately increase speed but gradually increases.

Therefore, when the motor receives the deceleration command as described above, as shown by the broken line in Fig. 5, the feeder is decelerated near the point of maximum speed V2 during the return, the maximum speed during the return decreases, and the maximum during the return. The average acceleration of the late return stage from the speed to the zero velocity of the return stage decreases, and the average value of the inertia force of the late return stage is reduced. In addition, the average acceleration of the return electric from the zero speed of the moving end to the maximum speed during the return also decreases, and the average value of the inertia force of the return electric also decreases. Therefore, fluctuation of the food slicer due to the inertial force generated in the feeder during the return becomes difficult.

In addition, since the period during which the feeder is decelerated is limited to near the maximum speed time point during the return, the amount of increasing the feeder traveling speed other than the deceleration period is at least reduced to compensate for the deceleration during the return of the feeder. Therefore, the moving speed for cutting the food in the feeder does not become excessively high.

As a result, when the crankshaft of the crank mechanism of the feeder reciprocating drive mechanism is rotated at a constant speed, the rotational speed of the crankshaft is reduced only in the vicinity of the point of time when the returning feeder reaches the maximum speed, thereby lowering the maximum speed during the return of the feeder. It was assumed that.

2) In the conventional food slicer as described above, the cause of the large unevenness of the feeder stop position when stopping the feeder at the return stage by closing the operation switch is that the feeder reaches a position slightly earlier than the moving stage, that is, the feeder. Because of the large unevenness of the feeding speed of the feeder at the start of braking, the rotational speed of the motor is always maintained at the start of braking of the feeder, even if the number of food cuts per unit time is set when stopping the feeder at the return stage. Therefore, the rotation speed of the crankshaft was decelerated to a fixed value.

In this way, regardless of the set value of the food cutting water per unit time, the running speed at the start of control of the feeder always becomes a constant value, so that the non-uniformity of the stop position of the feeder becomes small. In addition, since the traveling speed at the start of braking of the feeder becomes small, the inertia force or impact at the time of stopping the braking of the feeder becomes small.

1 is a partial longitudinal sectional view of a food slicer with a feeder reciprocating drive of an embodiment of the invention.

2 is a plan view of the food slicer.

3 is a plan view showing a sensor portion of the feeder reciprocating drive device.

4 is a block diagram of a motor deceleration control portion of the feeder reciprocating drive device.

FIG. 5 is a diagram showing a change in feeder travel speed of the feeder reciprocating drive device. FIG.

<Explanation of symbols for main parts of drawing>

2: circular cutter, 5: feeder, 6, 7, 8, 9, 13: feeder reciprocating drive mechanism, 6: crank mechanism, 9: motor, 10: crankshaft, 14: moving piece, 15: deceleration at high speed operation Sensor, 16: deceleration sensor at stop, 17: return short stop sensor, 21: inverter, 23: speed setting device, 24: food cutting water setting dial per unit time, 25: deceleration control device

Means for solving the above problems are as follows.

1) A feeder reciprocating drive mechanism comprising a rotating circular cutter and a feeder for feeding food, the feeder being capable of reciprocating between a moving end facing the circular cutter and a returning end not facing the circular cutter and including a crank mechanism. When the feeder returns and returns to the return end, the food set in the feeder is supplied with the cutting thickness, and when the feeder moves and reaches the moving end, the food tip protruding on the feeder tip is cut by the rotating circular cutter. In the food slicer,

A feeder reciprocating drive device characterized in that the rotation speed of the crankshaft is reduced to reduce the maximum speed during the return of the feeder only when the crankshaft of the crank mechanism is rotated at a constant speed, and only near the point of time when the feeder in return reaches the maximum speed. .

The crankshaft rotational speed of the crank mechanism can be adjusted to adjust the number of cuts of food per unit time, and the deceleration of the crankshaft rotational speed during the feeder abdomen is performed only at a high speed operation with a large number of cuts of food per unit time. Feeder reciprocating drive.

2) a feeder reciprocating drive mechanism comprising a rotating circular cutter and a feeder for feeding food, the feeder being capable of reciprocating between a moving end facing the circular cutter and a returning end not facing the circular cutter and including a crank mechanism When the feeder returns and returns to the return end, the food set in the feeder is supplied with the cutting thickness.When the feeder moves and reaches the moving end, the food tip protruding from the feeder tip is cut by the rotating circular cutter. In addition, the crank shaft rotation speed of the crank mechanism can be adjusted to control the number of cuts of food per unit time, and when the feeder reaches the position slightly before the moving end when the feeder stops at the return end, the braking of the feeder starts. In the food slicer which stops the feeder at the return stage,

A feeder reciprocating drive device characterized in that the crankshaft rotational speed is decelerated to a constant value at the start of braking of the feeder when the feeder is stopped at the return stage.

EXAMPLE

The food slicer provided with the feeder reciprocating drive device is for meat, and is fixed to the center part of the plate-shaped circular cutter 2 on the left rear part of the base 1 as shown to FIG. 1 and FIG. The rotating shaft 3 is axially supported in the left-right direction, and the cutting surface containing the cutting blade of the peripheral edge of the circular cutter 2 is arrange | positioned at the vertical surface along the front-back direction. The rotary shaft 3 is connected to an electric motor (not shown) and constitutes a mechanism for rotationally driving the circular cutter 2.

On the left front side of the base 1, as shown in FIG. 1 and FIG. 2, the contact plate 4 is installed perpendicularly to the front of the circular cutter 2, and the contact surface of the contact plate 4 is It arrange | positions in parallel with the cutting surface of the circular cutter 2, and makes the contact plate 4 moveable to the left-right direction. The contact plate 4 arrange | positions a contact surface from the cut surface of the circular cutter 2 to the back side of the circular cutter 2 by cutting thickness.

On the base 1, as shown in FIG. 1 and FIG. 2, the feeder 5 which supplies food is faced with the return end which faces the cut surface of the circular cutter 2, and the contact surface of the contact plate 4, and the circular cutter Between the moving stages which do not face the cut surface of (2), it is provided so that reciprocation is possible in the front-back direction along two rails.

The feeder reciprocating drive unit connects the lower part of the feeder 5 to the electric motor 9 via the crank mechanism 6, the reducer 7 and the belt transmission mechanism 8, and moves the feeder 5 to the rear. The feeder reciprocating drive mechanism which reciprocates between a stage and a front return stage is comprised. Moreover, the control apparatus which rotationally drives the electric motor 9 is provided.

Rotationally driving the electric motor 9 causes the feeder 5 to reciprocate between the return end and the moving end. Each time the feeder 5 returns and returns to the return stage, the food set in the feeder 5 is fed by the cutting thickness to the contact plate 4 side. Whenever the feeder 5 moves and reaches the moving end, the food tip protruding from the feeder 5 tip is cut by the circular cutter 2 in rotation.

The crank mechanism 6 consists of the crankshaft 10, its arm 11, and the rod 12, as shown to FIG. 1 and FIG. The tip of the rod 12 is rotatably connected to a mounting piece 13 fixed to the lower part of the feeder 5. The rod 12 and the arm 11 are disposed horizontally on the base 1 and penetrate the crankshaft 10 perpendicularly to the top plate of the base 1. The rotation center of the rod 12 front-end | tip and the mounting piece 13 is offset to the left a little from the rotation center of the crankshaft 10, and is offset.

The reducer 7 and the electric motor 9 are arranged in the base 1. The reduction gear 7 consists of a worm gear mechanism, and the crankshaft 10 is used as the output shaft, and the input shaft is connected to the rotating shaft of the electric motor 9 via the belt transmission mechanism 8.

As shown in FIG. 1, the speed reducer 7 protrudes the output shaft, which serves as the crankshaft 10, to the lower side of the casing, and fixes the base end of the operating piece 14 to the lower end of the output shaft 10. Under the casing of the reducer 7, as shown in FIG. 3, a deceleration sensor 15 at high speed operation, a deceleration sensor 16 at stop and a return stage stop sensor 17 are attached around the output shaft 10. Position adjustment is possible.

Each sensor 15, 16, 17 is a proximity switch, and operates when the tip of the operating piece 14 that is rotated by the rotation of the crankshaft 10 approaches. During the high speed operation, the deceleration sensor 15 is operated when the crankshaft 10 is rotated at a constant speed when the feeding device 5 during the return reaches a position before the predetermined distance from the maximum speed. The deceleration sensor 16 at stop operates when the feeder 5 reaches a braking start position, that is, a position before a predetermined distance from the operating position of the return stage stop sensor 17. The return stage stop sensor 17 operates when the feeder 5 reaches a position slightly before the return stage.

As shown in FIG. 1 and FIG. 2, the rotary drive switch 18 and the button push type emergency stop switch 19 are attached to the front surface of the base 1. As shown in FIG.

In the rotation drive control apparatus of the electric motor 9, as shown in FIG. 4, the electric motor 9 is connected to the power supply 22 via the inverter 21, and the speed setting device 23 is connected to the inverter 21. As shown in FIG. A dial 24 for connecting the speed setting device 23 to set the food cutting number per unit time according to the feeder round trip per unit time, and the electric motor 9 according to the food cutting number per unit time set by the dial 24. It is configured to set the rotational speed of. In an embodiment, the adjustable range of food cutting water per unit time is 40 to 75 sheets per minute.

Moreover, the deceleration control apparatus 25 is provided, and the setting dial 24, the deceleration sensor 15 at the time of high speed operation, the deceleration sensor 16 at the time of stop, are provided in the input terminal of the deceleration control apparatus 25, and The return stage stop sensor 17 is connected, respectively, and the output end of the deceleration control device 25 is connected to the speed setting device 23.

In the embodiment where the number of food cuts per unit time set by the dial 24 is low, there is no fear that the food slicer may swing due to the reciprocating movement of the feeder 5 during the low speed operation of less than 60 sheets / minute. During low speed operation, the rotational speed of the crankshaft 10 is maintained at a constant speed in accordance with the rotational speed of the electric motor 8 during the reciprocation of the feeder 5 and does not decelerate on the way. The traveling speed of the feeder 5 changes to a substantially sinusoidal shape, as shown by the solid line in FIG. 5, reaches the maximum speed V1 during the movement and reaches the maximum speed V2 during the return. The maximum speed V2 during the return is greater than the maximum speed V1 during the movement.

In the embodiment where the number of food cuts per unit time set by the dial 24 is high, there is a possibility that the food slicer may swing due to the reciprocating movement of the feeder 5 during the high speed operation of 60 sheets / minute or more.

In high speed operation, when the feeder 5 rotates the crankshaft 10 at a constant speed, the sensor 15 for deceleration operates at high speed by reaching a position before a predetermined distance from the position which becomes the maximum speed V2 during the return. Then, the deceleration control device 25 outputs a command to decelerate the rotational speed of the electric motor 9 for a predetermined short time T. The short time T can be adjusted. The rotation speed after deceleration is the rotation speed when the food cutting number per unit time is set to the minimum value of the adjustable range, in the example, 40 sheets / minute.

When the motor 9 receives the deceleration command as described above, the feeder 5 decelerates near the point of maximum speed V2 during the return, as shown by the broken line in FIG. The average acceleration of the late return stage from the maximum speed in the middle to the zero velocity of the return stage decreases, and the average value of the inertia force of the late return stage becomes small. Further, the average acceleration of the return electricity from the zero speed of the moving end to the maximum speed during the return also decreases, and the average value of the inertia force of the return electricity also decreases. Therefore, fluctuation of the food slicer due to the return of the feeder 5 becomes difficult to occur.

When the operation switch 18 is inserted, the circular cutter 2 starts to rotate, and the electric motor 9 rotates to drive the feeder 5 to start reciprocating movement. The low speed operation or the high speed operation is performed corresponding to the number of food cuts per unit time set by the dial 24. In the high speed operation, the feeder 5 is decelerated during the return as described above.

When the operation switch 18 is cut off, the circular cutter 2 is stopped by rotational driving and stops by inertia rotation. Moreover, the feeder 5 continues moving or returning without the rotational drive of the electric motor 9 stopping. When the feeder 5 reaches a position before a predetermined distance from the operating position of the return stop sensor 17 and the deceleration sensor 16 operates at the stop, the deceleration control device 25 increases the rotational speed of the electric motor 9. Output the command to decelerate. The rotational speed after deceleration is the rotational speed when the food cutting number per unit time is set to the minimum value of the adjustable range, 40 sheets / minute in the embodiment, regardless of the food cutting number per unit time set by the dial 24.

When the feeder 5 reaches a position slightly before the return end and the return stop sensor 17 is operated, the traveling speed of the feeder 5 depends on the rotational speed of the electric motor 9 to reduce the number of food cuts per unit time. Decelerate to the value when it is set to the minimum value of the adjustable range. When the return stage stop sensor 17 is operated, the deceleration control device 25 outputs a command to stop and brake the rotational drive of the electric motor 9. The feeder 5 is braked and stopped at the return stage. Therefore, the nonuniformity of a stop position is small and the impact at the time of braking stop is small.

When the emergency stop switch 19 is pressed, the circular cutter 2 inertia rotates to stop, while the feeder 5 immediately stops braking at that position.

<Variation example>

In the above food slicer, the food set in the feeder 5 is supplied by the feeder installed in the feeder 5, but is arranged by inclining the circular cutter and the contact plate and inclined the feeder so that the tip is sag. Each time the feeder is returned to the return stage facing the contact plate and not facing the circular cutter, the food set in the feeder is lowered and fed toward the contact plate at its own weight.

1) Since the maximum speed during the return of the feeder is lowered and the average acceleration of the return electric and the latter is lowered, and the average value of the inertia force between the return electric and the latter becomes smaller, the fluctuation of the food slicer is caused by the inertia force generated in the returning feeder. It is difficult to do. In addition, since the period during which the feeder is decelerated is limited to near the maximum speed time point during the return, the amount of increasing the feeder traveling speed other than the deceleration period is at least reduced to compensate for the deceleration during the return of the feeder. The feed rate for cutting the food in the feeder does not become excessively high. Therefore, it is easy to increase the food cutting number per unit time to improve the food cutting efficiency.

When the deceleration of the crankshaft rotational speed during the feeder return is performed only at the time of high speed operation, no extra deceleration control is performed during the low speed operation in which there is no possibility that the food slicer swings due to the reciprocating movement of the feeder.

2) When stopping the feeder at the return stage, regardless of the set value of food cutting water per unit time, since the feeding speed of the feeder is always decelerated to a constant value at the start of braking of the feeder, the non-uniformity of the stop position of the feeder is small. In addition, the impact at the braking stop of the feeder is reduced. Therefore, it is easy to always stop the feeder at the return stage even if the range for adjusting the food cutting water per unit time is widened.

Claims (5)

Rotary circle cutter, Food feeder, An electric motor connected to the feeder via a crank mechanism, A feeder reciprocating drive mechanism for reciprocating between a moving end facing the circular cutter by a rotational drive of the electric motor and a return end not facing the circular cutter, and A rotation drive control device for the electric motor, When the feeder returns and returns to the return end, the food set in the feeder is supplied with a cutting thickness, and when the feeder moves and reaches the moving end, the circular cutter in which the food tip protruding to the front end of the feeder is rotating is rotated. Composed by cutting In the food slicer, When the crank shaft of the crank mechanism is rotated at a constant speed, further comprising a deceleration control device for outputting a command to decelerate the rotational speed of the electric motor for a preset time from before the time when the supplying device becomes the maximum speed. , The rotation speed of the crankshaft is reduced only in the vicinity of the point of time at which the maximum speed is reached, thereby lowering the maximum speed during the return of the feeder. Feeder reciprocating drive, characterized in that. The method of claim 1, It is possible to adjust the rotational speed of the crank shaft of the crank mechanism to adjust the number of food cuts per unit time, The deceleration control device outputs the deceleration command only during a high speed operation in which the number of food cuts per unit time is high. Feeder reciprocating drive, characterized in that. Rotary circle cutter, Food feeder, An electric motor connected to the feeder via a crank mechanism, A feeder reciprocating drive mechanism for reciprocating between a moving end facing the circular cutter by a rotational drive of the electric motor and a return end not facing the circular cutter, and A rotation drive control device for the electric motor, When the feeder returns and returns to the return end, the food set in the feeder is supplied with a cutting thickness, and when the feeder moves and reaches the moving end, the circular cutter in which the food tip protruding to the front end of the feeder is rotating is rotated. Is cut by It is possible to adjust the rotational speed of the crank shaft of the crank mechanism to adjust the number of food cuts per unit time, When the feeder stops at the return end, when the feeder reaches a position near the moving end, the feeder starts braking and stops the feeder at the return end. In the food slicer, Further comprising a deceleration control device that outputs a command to decelerate the rotational speed of the electric motor when the feeder reaches a position before a predetermined distance from the braking start position when stopping the feeder at the return end, Reduce the rotational speed of the crankshaft to a constant value at the start of braking of the feeder; Feeder reciprocating drive, characterized in that. Rotary circle cutter, Food feeder, An electric motor connected to the feeder via a crank mechanism, A feeder reciprocating drive mechanism for reciprocating between a moving end facing the circular cutter by a rotational drive of the electric motor and a return end not facing the circular cutter, and A rotation drive control device for the electric motor, When the feeder returns and returns to the return end, the food set in the feeder is supplied with a cutting thickness, and when the feeder moves and reaches the moving end, the circular cutter in which the food tip protruding to the front end of the feeder is rotating is rotated. Is cut by It is possible to adjust the rotational speed of the crank shaft of the crank mechanism to adjust the number of food cuts per unit time, When the feeder stops at the return end, when the feeder reaches a position near the moving end, the feeder starts braking and stops the feeder at the return end. In the food slicer, When the crankshaft of the crank mechanism is rotated at a constant speed in a high speed operation with a large number of food cuts per unit time, decelerate the rotational speed of the electric motor for a preset time from before the time when the feeder at return becomes the maximum speed. Further comprising a first deceleration control device for outputting a command, decelerate the rotational speed of the crankshaft only in the vicinity of the time when the maximum speed is reached, thereby lowering the maximum speed during the return of the feeder, And a second deceleration control device that outputs a command to decelerate the rotational speed of the electric motor when the feeder stops at the return end and reaches a position before a predetermined distance from the braking start position of the feeder. Decelerate the rotation speed of the crankshaft to a constant value at the start of braking Feeder reciprocating drive, characterized in that. The method according to any one of claims 2 to 4, A feeder reciprocating drive device characterized in that the rotational speed after the rotational speed reduction of the crankshaft is a rotational speed when the number of food cuts per unit time is set to the minimum value of the adjustable range.