JP4017859B2 - Meat slicer meat box drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a meat slicer meat box drive device, wherein the meat box reciprocating on the machine base is decelerated until it reaches the bottom dead center from the top dead center, that is, when the meat box returns, the bottom dead center It is characterized by being able to return to high speed before and after.
[0002]
[Prior art]
The meat box drive device that controls the speed of the meat box drive motor from the reciprocating position of the meat box to reduce the inertia when the meat box passes through the top dead center and the bottom dead center is, for example, There are JP-A-11-198096, JP-A-2001-121476, JP-A-2001-179686, and the like.
[0003]
The driving device disclosed in Japanese Patent Application Laid-Open No. 11-198096 gives a command to output a deceleration signal from the inverter to the meat box motor near the dead center of the crank that reciprocates the meat box, and to return to the normal speed after passing the dead center. Therefore, there is a drawback that it takes time to return to the increased speed, and the speed recovery of the meat box after passing through the dead center is reduced.
In the drive device disclosed in Japanese Patent Laid-Open No. 2001-121476, the rotation speed of the crank is reduced at the time when the speed of the moving meat box reaches the maximum to reduce the vibration at the time of reversal. There is a drawback that the increase / decrease of the loading capacity and the deceleration effect may not be constant.
Japanese Patent Application Laid-Open No. 2001-179686 issues a first deceleration command when the crank passes the top dead center when the meat box is stopped forward, and the decelerated meat box passes a predetermined position. In this case, a secondary deceleration command is issued so that the meat box at the time of the previous stop can be stopped gently, and speed control is not performed when the meat box is continuously reciprocated.
[0004]
[Problems to be solved by the invention]
For this reason, the problem to be solved by the present invention is that it is less affected by the load weight by more rationally allocating the switching between the deceleration section of the reciprocating meat box and the acceleration, and the time The object is to develop a meat box drive device that can suppress vibrations without reducing the number of round trips per unit.
[0005]
[Means for Solving the Problems]
Therefore, in order to solve the above-described problems, the present invention provides a round blade that rotates vertically at a fixed position on the machine base, and a material is loaded on the machine base with the front end aligned with the blade surface of the round blade. A meat slicer having a reciprocating meat box, wherein the meat box motor uses a variable speed motor, and an inverter and a sequencer are connected to the motor drive circuit so that the speed of the meat box can be controlled. In the drive device, the speed of the range in which the vibration when the meat box passes through the bottom dead center is set to the low speed V1, and the meat box motor from the bottom dead center to the top dead center until the meat box passes through the top dead center. The speed is set to the high speed V2, the speed is reduced to the low speed V1 in the interval from when the meat box passes the top dead center at the high speed V2 until it reaches the bottom dead center, and immediately before the meat box passes the bottom dead center. Meat Slicer Meat Box Drive configured to repeat returning to speed V2 There is provided an apparatus.
[0006]
The meat box drive device of the present invention configured as described above decelerates the meat box motor to the low speed V1 until the meat box inverted from the top dead center reaches the bottom dead center. The generated vibration is reduced as much as possible. The meat box drive device of the present invention switches the motor for the meat box from the low speed V1 to the high speed V2 immediately before the meat box passes the bottom dead center. Since it is the slowest section, the meat box will pass through the bottom dead center before the rotation of the motor switched to the high speed V2 rises to steady rotation, so the vibration when passing through the bottom dead center also Very few. Furthermore, since acceleration is applied to the meat box after passing through the bottom dead center, it smoothly returns to the high speed V2.
As described above, the present invention solves the above-described problems.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the slicer S body driven by the apparatus of the present invention is a conventionally known slicer S, which has a round blade A that rotates vertically on one side of the machine base F, The meat box B is reciprocated along the front end surface B ′ along the blade surface A ′ of the round blade A while being driven by the rotating crank 1 and being supported by the rail 2 at the front and rear.
[0008]
The slicer S operates the round blade A and the meat box B by the drive circuit E shown in FIG.
In FIG. 3, M1 is a round blade motor, M2 is a meat box motor, 3 is an inverter connected to the meat box motor M2 with a volume control 4 and 5 is a lever switch for slicer operation. 6 and a position sensor 7, and a sequencer in which the inverter 3 and the relay MC1 of the round blade motor M1 are connected to the relay MC2 of the meat box motor M2.
[0009]
In this embodiment, the lever switch 6 is attached to the front side surface of the machine base F as shown in FIG. 1, and the position sensor 7 is fixed to the crankshaft 8 in the machine base F as shown in FIG. It comprises a dog 7a and a sensor 7b provided on the rotation locus thereof.
When the lever switch 6 is put into the operating position, the relay contact mc1 is turned on and the round blade motor M1 is started, and then the meat box motor M2 is started and rotated via the inverter 3 in response to a command from the sequencer 5. The meat box B reciprocates toward the round blade A.
Note that the relay contact mc2 is a relay contact of a safety relay connected to an emergency stop switch (not shown), and is turned ON when the power switch is turned on.
[0010]
The inverter 3 and the sequencer 5 are set in advance so that the speed within the allowable range of vibration when the meat box B passes the bottom dead center P2 shown in FIG. 2 is set to the low speed V1, and the meat box B is above the bottom dead center P2. A speed setting program for setting the speed until passing through the dead point P1 to the high speed V2 and a shift timing program for switching between the low speed V1 and the high speed V2 by a signal from the position sensor 7 are input.
In this embodiment, the top dead center P1 is the point at which the meat box B turns back toward the machine base F by the rotation of the crank 1, and the bottom dead center P2 is the turning point on the near side of the meat box B.
[0011]
Then, the drive circuit E decelerates the meat box motor M2 to the low speed V1 in the interval from when the meat box B reciprocating on the machine base F passes the top dead center P1 to the bottom dead center P2. Thus, the vibration when passing through the bottom dead center P2 is suppressed as much as possible.
Further, the drive circuit E switches the meat box motor M2 to the high speed V2 immediately before the meat box B passes through the bottom dead center P2, but the meat box B at that time is at the time of reversal to minimize the speed. Therefore, the meat box motor M2 rises to the high speed V2 and the meat box B after passing through the bottom dead center P2 overlaps with the rotational speed of the crank 1 to overlap with each other. Traveling smoothly returns to the high speed V2.
[0012]
【The invention's effect】
According to the present invention configured as described above and used as described above, the inertia of the meat box at the bottom dead center is suppressed to a minimum within an allowable range, and vibration of the machine base is suppressed. In addition, since the return to high speed is performed smoothly, a meat slicer that is quiet and does not reduce the slice efficiency can be obtained. As described above, the present invention has an extremely excellent effect in practical use.
[Brief description of the drawings]
1 is a partially cutaway front view of an embodiment. FIG. 2 is a partially cutaway plan view. FIG . 3 is a drive circuit diagram schematically.
[Explanation of sign]
S Slicer F Machine stand A Round blade (A 'blade surface)
B meat box (B 'front end face)
P1 Top dead center P2 Bottom dead center 1 Crank 2 Rail 3 Inverter 4 Volume 5 Sequencer 6 Lever switch 7 Position sensor (7a dog, 7b sensor)
E Drive circuit M1 Round blade motor M2 Meat box motor MC1 Round blade relay mc1 Relay contact MC2 Meat box relay mc2 Relay contact

Claims (1)

A meat slicer comprising a round blade that rotates vertically at a fixed position on the machine base, and a meat box that loads material and reciprocates on the machine base along the blade edge of the round blade, In a meat box drive device that uses a variable speed motor for the meat box motor and connects the inverter and sequencer to the motor drive circuit to control the speed of the meat box, the meat box passes the bottom dead center in advance. the speed can vary the vibration is acceptable at the time of a low velocity V 1, since the meat boxes speed up through the top dead center from the bottom dead center and high speed V2, meat box has passed the top dead center Meat slicer meat configured to repeat the process of decelerating the meat box motor to the low speed V1 until the bottom dead center is reached and returning to the high speed V2 just before the meat box passes the bottom dead center Box drive.

Images