JP3978840B2 - Slicer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slicer that varies the reciprocating speed of a storage box.
[0002]
[Prior art]
The prior art will be described with reference to FIG. In the slicer that reciprocates the meat box 6 by the crank mechanism and slices the workpiece, the rotation speed of the meat box motor that rotates the crankshaft is always rotated at the same speed while the crankshaft rotates once. When the meat box 6 moves in the direction B from the opposite side of the round blade 2, that is, when slicing the workpiece, a moment M1 acting as a swinging force acts on the foot C of the main body, and the meat box 6 becomes A When moving in the direction, a moment M2 acts on the foot D of the main body. When the dead center portion of the crank mechanism, that is, when the meat box 6 reaches the opposite end of the round blade 2 or when the meat box 6 reaches the end of the round blade 2, inertial force is applied to the movement direction side of the meat box 6. The applied moments M1 and M2 are maximized. In a normal slicer, there are a drive device for the round blade 2 and a drive device for the crank mechanism on the round blade 2 side. Therefore, since the center of gravity of the main body is shifted toward the foot D side on the side of the round blade 2, the swinging moment tends to have a relationship of M2> M1. Therefore, the shaking swing force when the meat box 6 moves to the round blade 2 side tends to become the largest. Further, as the reciprocating speed of the meat box 6 is increased, the inertial force in the moving direction of the meat box 6 is increased, and the moments M1 and M2 that are the shaking swing force of the main body are increased.
[0003]
Normally, this type of slicer is always shaken by the moments M1 and M2. Therefore, in order to prevent the swinging of the main body, the mass of the main body including the work material so that the moment M1 and the moment M2 are balanced is the force F1, F2 applied to each foot C, D and between the foot C and the foot D. The reciprocating speed of the meat box 6 that is balanced from the distance L (normal slicer is about 65 times / minute).
[0004]
In order to increase the efficiency of the slicing operation, if the speed is set to be higher than the reciprocating speed of the meat box 6 that is balanced with the swinging moments M1 and M2, the inertia force of the meat box 6 cannot be absorbed by the balance force of the machine body, and the slicer The whole was shaken like a seesaw, and the foot C and the foot D floated alternately, and eventually the main body moved.
[0005]
[Problems to be solved by the invention]
In order to balance the swinging moments M1, M2 with the reciprocating speed of the meat box 6 increased, the force F1, F2 applied to each part of the main body is increased, that is, the weight of the main body is increased, or the feet C, D It is necessary to lengthen the distance L between them, which leads to an increase in the size and weight of the slicer body.
[0006]
In order to prevent shaking while increasing the reciprocating speed of the meat box 6 with a small space and light slicer, the main body feet C and D can be completely fixed to the floor with anchor bolts, etc. If fixed to the floor, the main body cannot be moved, and there is a problem that it is impossible to perform a cleaning operation to remove debris of a workpiece under the main body.
[0007]
In addition, when putting a meat block into the meat box 6, the meat box 6 is normally stopped at the opposite end (near the dead center of the crank) of the round blade 2 in order to prevent contact with the round blade 2. Work material is stored from the opposite side. However, if the meat box 6 is stopped at a position opposite to the round blade 2 with the reciprocating speed of the meat box 6 increased, the inertial force increases and the amount of deviation of the stop position increases. Therefore, since the meat box 6 does not stop at the position of the opposite end of the round blade 2, the workpiece is stored after the meat box 6 is artificially moved to the opposite end of the round blade 2. For this reason, the efficiency of storing the meat chunk has been deteriorated. In order to prevent this, if the braking force for stopping the meat box 6 is increased, the meat box 6 stops suddenly. At this time, since the impact force and the impact sound are generated in the crank mechanism portion, The mechanical life of the mechanism part was shortened, and there was a problem of noise.
[0008]
An object of the present invention is to eliminate the drawbacks of the prior art described above, and to increase the moving speed of the storage box while maintaining a small space and light weight of the slicer body. Another object is to stop the storage box at the opposite end of the processing blade quietly and accurately when the storage box is stopped by speeding up the storage box.
[0009]
Has a storage box for accommodating a workpiece, the storage box drive motor the housing box is round trip movement via a crank mechanism, is rotated by the machining tool drive motor in the course of the reciprocating movement of said receiving box In a slicer for slicing the workpiece with a processing knife that is being used, when the storage box is repeatedly reciprocated a plurality of times by the storage box drive motor, the rotational speed of the storage box drive motor is set to at least the storage box This is achieved by decelerating in the backward movement from the machining tool side to the opposite side of the machining tool and accelerating in the forward movement from the opposite side of the machining tool to the machining tool side.
[0010]
In addition, a rotation speed transmission means for changing the reciprocating speed of the storage box by changing the rotation speed of the storage box drive motor and a detection means for detecting the position of the storage box are provided, and the rotation speed change is performed. And a means for decelerating the motor for driving the storage box within at least the backward movement of the reciprocating movement of the storage box when the detection means detects that the position of the storage box has reached the first predetermined position. Is achieved. Further, after decelerating the storage box drive motor within the return path movement of the storage box, the detection means detects that the position of the storage box has reached the second predetermined position, and then travels back and forth. This is achieved by accelerating the storage box drive motor within the movement.
[0011]
Further, the detection means is achieved by detecting the position of the storage box by detecting the position of the crankshaft of the crank mechanism. Further, a stop switch for stopping the storage box driving motor is provided, and the storage box is stopped at the opposite end of the processing blade when the rotation speed change means is stopped by operating the stop switch. Let
[0012]
In the figure, a round blade base 3 that supports a round blade 2 as a processing blade is provided upright on a machine base 1. The round blade 2 is rotationally driven by a round blade motor 5 serving as a machining blade motor via a belt 4. The meat box 6 serving as a storage box is provided so as to reciprocate toward the cutting edge of the round blade 2 using a rail 7 fixed to the upper part of the machine base 1 as a guide. The meat box 6 stores the meat chunk 13, and the meat box 6 is provided with a meat chunk feeding device 14 that feeds the meat chunk 13 minutely toward the round blade 2 each time the meat box 6 reciprocates once. . The meat box 6 is reciprocated by a meat box motor 11 serving as a storage box drive motor via a crank mechanism 8, a speed reducer 9 and a belt 10 provided in the machine base 1. The meat box motor 11 is connected to an inverter 12 serving as a speed change means, and the rotation of the meat box motor 11 is changed by changing the output frequency of the inverter 12. As shown in FIG. 2, a rotary encoder 16 serving as detection means is provided at the lower end of the crankshaft 15 of the crank mechanism 8, and the rotary encoder 16 rotates the crankshaft 15 that detects the position of each crankshaft near its dead center. A pulse signal proportional to is output. By counting the pulse signals of the rotary encoder 16, the rotation angle of the crankshaft 15, that is, the positions near the dead points F and G of the crank mechanism 8 can be detected. On the front surface of the machine base 1, there are provided an operation switch 17 for outputting drive operation signals for the round blade motor 5 and the meat box motor 11, and a stop switch 19 for stopping the round blade motor 5 and the meat box motor 11.
[0013]
The signals of the operation switch 17 and stop switch 19 and the signal of the rotary encoder 16 are input to a sequencer 18 serving as control means. The sequencer 18 drives the meat box motor 11 to the inverter 12, stops and outputs the command signals of the rotation speeds V 1 and V 2 to the inverter 12, and excites the coil 20 a of the electromagnetic switch 20 that drives and stops the round blade motor 5. And outputs a demagnetizing signal. The rotation speed V1 of the meat box motor 11 is set to the high speed side and the rotation speed V2 is set to the low speed side (V1> V2). In this embodiment, the rotation speed V1 is 80 times / minute in terms of the number of reciprocations of the meat box 6. The rotational speed V2 is set to 60 times / minute. Further, the sequencer 18 preliminarily includes the number of pulses at the position E before the dead point F on the round blade 2 side, which is the rotation angle of the crankshaft 15 near each dead point of the crank mechanism 8, and the dead point on the opposite side of the round blade 2. The number of pulses at the passing position H of G is input.
[0014]
In the above configuration, the operation of the slicer will be described. When the meat block 13 is stored in the meat box 6 on the opposite side of the round blade 2 and the operation switch 17 is operated, the signal of the operation switch 17 is received by the sequencer 18, and the coil 20a of the electromagnetic switch 20 is excited. The round blade motor 5 is driven, and a command signal and a drive signal of a high rotational speed V1 are output to the inverter 12, and the inverter 12 drives the meat box motor 11 at the rotational speed V1. The meat box 6 moves forward through the belt 10, the speed reducer 9, and the crank mechanism 8 in the direction A of the round blade 2 side at a high speed with the rail 7 as a guide. At this time, the crankshaft 15 of the crank mechanism 8 also rotates synchronously, and the rotary encoder 16 outputs a pulse signal proportional to the rotation angle of the crankshaft 15. When the sequencer 18 counts this pulse signal and counts the number of pulses until it reaches the position E before the dead center F of the crank mechanism 8 set in advance, the sequencer 18 sends a command signal for the rotational speed V2 to be low to the inverter 12. Output.
[0015]
The inverter 12 decelerates the meat box motor 11 and drives it at the rotational speed V2. Therefore, the meat box 6 moves at a low speed from the position E before the dead center F of the crank mechanism 8. Thereby, the inertia force of the meat box 6 near the dead center F on the round blade 2 side of the crank mechanism 8 is reduced. In this low speed state, the meat box 6 is moved in the backward direction in the arrow B direction opposite to the round blade 2. Next, when the sequencer 18 counts the number of pulses at the passing position H of the dead point G on the side opposite to the round blade 2, the sequencer 18 issues a command signal of a high rotational speed V1 to the inverter 12 and rotates the meat box motor 11. Drive at speed V1. Therefore, the meat box 6 moves forward at high speed after passing through the dead center G on the opposite side of the round blade 2 at low speed. Thereby, the inertia force of the meat box 6 near the dead center G on the opposite side of the round blade 2 of the crank mechanism 8 is reduced. By repeating this reciprocating operation, the inertial force of the meat box 6 at each dead point is reduced, and the moments M1 and M2 that shake the main body are reduced. Further, when the stop switch 19 is operated to stop the inverter 12 by the sequencer 18 and the meat box 6 is stopped at the opposite end of the round blade 2, the rotational force is V2 and the inertia force is small and the variation in the stop position is small. Become.
[0016]
In this embodiment, the sequencer 18 is used in the control means, but the same effect can be obtained even if the same control is performed in the control means such as a microcomputer circuit or a logic circuit. Further, although the rotary encoder 16 is provided on the crankshaft 15 as means for detecting the position near the dead center of the crank mechanism 8, it may be provided on the rotating shaft of the meat box motor 11, the rotating shaft of the speed reducer, or the like. Although the rotary encoder 16 that outputs a pulse signal is used for position detection, a plurality of limit switches or the like may be used because it is sufficient to detect the vicinity of each dead point. The positions near the dead centers of the crank mechanism 8 may be detected on the reciprocating path of the meat box 6.
[0017]
【The invention's effect】
According to the present invention, the reciprocating speed of the meat box reciprocated by the crank mechanism is used as the shift control, the position near the dead point at each dead point of the crank mechanism is detected by the detector, and each dead box is moved when the meat box is reciprocated. Since the reciprocating speed is controlled so as to reduce the inertial force at the point, the shaking moment of the main body can be reduced even if the reciprocating speed is high. This eliminates the need to increase the distance between the legs of the main body or increase the weight of the main body, provide a space-saving and lightweight slicer even if the reciprocating speed of the meat box is increased, and enables high-speed slicing operations. Therefore, the efficiency of slicing can be improved.
In addition, by reducing the return speed at which the meat box returns from the round blade side, the inertia force is reduced when the meat box is stopped at the meat box position where the meat block is placed, that is, the opposite end of the round blade side. Variation in position is reduced.
In addition, the mechanical impact force and impact sound at the time of stoppage are reduced, the mechanical life is extended and the noise is reduced, and the meat box has been moved artificially to the opposite end of the round blade side Since no work is required, the efficiency of slicing can be improved.
[Brief description of the drawings]
FIG. 1 is a front view of a meat slicer.
FIG. 2 is a partially enlarged view of a crankshaft.
FIG. 3 is a schematic top view of FIG. 1;
4 is a schematic partial right side view of FIG. 1. FIG.
FIG. 5 is a schematic top view of FIG. 1;
6 is a schematic partial right side view of FIG. 1; FIG.
FIG. 7 is a block circuit diagram.
FIG. 8 is a schematic right side view of FIG. 1;
[Explanation of symbols]
6 ... Meat box, 8 ... Crank mechanism, 11 ... Meat box motor, 12 ... Inverter, 16 ... Rotary encoder.

Claims (5)

A storage box for storing a workpiece; the storage box is reciprocated through a crank mechanism by a storage box drive motor; and is rotated by a processing blade drive motor during the reciprocation of the storage box In a slicer for slicing the workpiece with a processing blade,
When the storage box is repeatedly moved back and forth multiple times by the storage box drive motor,
The number of rotations of the storage box drive motor is reduced at least in the backward movement of the storage box from the processing blade side to the opposite side of the processing blade, and the storage box is moved forward from the opposite side of the processing blade to the processing blade side. A slicer characterized by acceleration within movement. A rotation speed transmission means for changing the reciprocating speed of the storage box by changing the rotation speed of the storage box drive motor; and a detection means for detecting the position of the storage box;
  The rotational speed shifting means is configured to drive the storage box at least within the reciprocating movement of the storage box when the detection means detects that the position of the storage box has reached the first predetermined position. The slicer according to claim 1, wherein the motor is decelerated. After decelerating the storage box drive motor in the return path movement of the storage box, the detection means detects that the position of the storage box has reached the second predetermined position, and then in the forward movement of the reciprocating movement. The slicer according to claim 2, wherein the storage box driving motor is accelerated. 4. The slicer according to claim 2, wherein the detecting means detects a position of the storage box by detecting a position of a crankshaft of the crank mechanism. A stop switch for stopping the storage box drive motor is provided, and the storage box is stopped at the opposite end of the processing blade when the rotation speed change means is stopped by operating the stop switch. The slicer according to any one of claims 2 to 4.

Images