JPH0616710Y2 - Control device for meat cutting machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is based on the application filed by the applicant of the present application.
The present invention relates to a control device for a meat cutting machine which is an improvement of No. 8.

[Conventional technology]

In the conventional meat cutting machine, when the start switch was turned on, the round blade drive motor and the meat box drive motor started simultaneously,
Before the rotation of the round blade reached a certain number of rotations, the meat box on which the meat chunk was placed moved to the position of the round blade and cut the meat chunk,
There was a problem that a step was generated in the sliced sliced piece due to overloading or locking of the round blade driving motor, but there was Japanese Utility Model Publication No. 59-9838 which solved this problem.

This is because by providing a delay timer, after the start switch is turned on, first, the round blade driving motor is rotated, and after the round blade driving motor reaches a predetermined speed (after about 0.3 seconds), the meat box The drive motor was driven to perform cutting work.

[Problems to be solved by the device]

However, in the case of the work of cutting the meat pieces one by one with the above-mentioned configuration (hereinafter, referred to as one-piece cutting), the start switch is turned on and the time set by the delay timer (hereinafter, referred to as delay time) is about 0 If the start switch is turned off within 3 seconds, the meat box drive motor is not driven and there is a problem that the meat block cannot be cut.

Therefore, when cutting one sheet, the start switch must be turned on, and the start switch must be turned off after the delay time has elapsed, that is, after the meat box drive motor starts driving and the meat box starts moving. Of course, if the returning timing is delayed, two or more sheets are cut, which has a drawback that the workability of cutting one sheet and the operability of the starting switch are poor.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, improve the operability of the starting switch, and improve the workability when cutting one sheet.

[Means for Solving the Problems]

The present invention has a starting switch and a holding circuit that senses that the starting switch is turned on and electrically holds the starting switch, and receives a signal output from the holding circuit to drive a round blade driving motor. 1 drive means, a delay means for delaying the output signal of the holding circuit for a predetermined time, a second drive means for receiving the output signal of the delay means to drive a meat box drive motor, and a start switch off And a release circuit for releasing the holding circuit with a signal obtained by ANDing a signal obtained by logically inverting the OFF signal of the start switch and a signal from the detector that detects that the meat box has returned to a predetermined position when operated. It is characterized by

[Action]

According to the present invention, the holding circuit is set by a signal when the start switch is turned on and is held until the detector detects that the meat box has returned to the predetermined front position. When the detector detects the meat box when the start switch is off, the holding circuit releases the holding circuit via the release circuit, so even if you turn the start switch on and then turn it off in a time shorter than the delay time, After cutting one piece of meat, the motor for driving the round blade and the motor for driving the meat box are surely stopped.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.
FIG. 2 is a front view showing a schematic configuration of the meat cutting machine.

In FIG. 2, a guide 2 is provided on a support 1, and a meat box 3 for accommodating a meat piece is provided on the guide 2. The meat box 3 is a round blade provided in the support 1 with the guide 2 as a guide. Drive motor 8
Through the speed reducer 6, the crank 5 and the arm 4 toward the blade edge of the round blade (direction perpendicular to the paper surface).

The round blade 9 that cuts the lump of meat is supported by a round blade holding member that is erected at one corner of the support base 1, and is rotationally driven by the round blade driving motor 8 via a power transmission means. In addition, the meat box 3 is provided with a feeding member (not shown) that feeds a small amount of meat toward the round blade 9 every time the meat box 3 reciprocates once. Support stand 1
A detector 16 is provided at a predetermined position of 1 to detect that the meat box 3 has returned to a position before the predetermined round blade 9.

A start switch 10 is provided on the front surface of the support base 1. When the start switch 10 is turned clockwise, the start switch 10 is turned on, and a logical value 1
When the signal is generated and returned in the counterclockwise direction, the signal is turned off and a signal having a logical value of 0 is generated.

FIG. 1 is a block diagram of the present invention.

In FIG. 1, a D-type flip-flop 11 having a data input terminal connected to a power supply Vcc and having an output signal of a start switch 10 as a clock input represents a holding circuit of the present invention, and is hereinafter referred to as a holding circuit 11.

The holding circuit 11 receives the signal of the logical value 1 when the start switch 10 is turned on, and the Q output becomes the logical value 1.
The logical value 1 turns on the relay coil 14, closes the relay contact 14a, and drives the round blade driving motor 8 to rotate the round blade 9. The relay coil 14 constitutes the first driving means of the present invention together with the relay contact 14a.

The Q output of the holding circuit 11 is input to the delay timer 12, and the delay timer 12 has a preset delay time longer than the time when the rotation speed stabilizes after the round blade driving motor 8 is driven. After (approximately 0.3 seconds) has elapsed, the relay coil 15 is turned on via the AND gate 13. When the relay coil 15 is turned on, the relay contact 15a is closed and the meat box driving motor 7 is driven, so that the meat box 3 reciprocates. The relay coil 15, together with the relay contact 15a, constitutes the second driving means of the present invention.

In this way, when the start switch 10 is turned on, the motors 7 and 8 are driven to cut the meat pieces in the meat box 3. Meat box 3
The crank 5 which is rotating when it passes through a predetermined front position each time the vehicle reciprocates is detected by the detector 16 and a pulse signal having a logical value of 1 is output. However, the start switch 1
While 0 is on, the logical value 1 changes to inverter 1
Since the logical value becomes 0 at 7, the AND gate 18 blocks the pulse signal of the logical value 1 from the detector 16, and the reset signal of the holding circuit 11 remains at the logical value 0 and is not reset. Keeps driving.

If the start switch 10 is turned off to stop the meat box 3, the output of the inverter 17 becomes a logical value 1, and the detector 16 detects that the meat box 3 has reached a predetermined front position, and a logical value of 1 is obtained. The pulse signal of is output. This pulse signal is input to the reset terminal of the holding circuit 11 via the AND gate 18. As a result, the holding circuit 11 is reset, and the Q output becomes the logical value 0. When the holding circuit 11 is reset, the relay coils 14 and 15 are turned off, and the relay contact 1
4a and 15a open, the motors 7 and 8 stop, and the reciprocating motion of the meat box 3 and the rotation of the round blade 9 also stop.

Therefore, the holding circuit 11 is set by sensing that the start switch 10 has been turned on, and this state indicates that the meat box 3 has reached a predetermined front position after the start switch 10 is turned off again. Is detected by the detector 16. Therefore, the meat chunk is continuously cut until the start switch 10 is returned from on to off.

Here, in order to cut one sheet, even if the starting switch 10 is turned on once and then turned off immediately again, the holding circuit 1
Since the signal is given to the delay timer 12 after being held at 1, even if the start switch 10 is turned off within the delay time of the delay timer 12, the detector 16 that the meat box 3 first reaches a predetermined front stop The motors 7 and 8 are driven until the detection signal is output from, and the one sheet is surely cut.

The release circuit of the present invention comprises a detector 16, an inverter 17 for inverting the signal of the starting switch 10, and an AND gate 18.

Since the delay timer 12 is provided, the meat box driving motor 7 starts driving when the round blade driving motor 8 is started.
After reaching a predetermined speed, as a result, the round blade driving motor 8 is not overloaded or locked, and no step is formed on the cut surface, which is the same as in the conventional case.

[Effect of device]

According to the present invention, when the starting switch is turned on to cut one sheet and then immediately turned off again, the timing of turning off the starting switch is within the time period regulated by the delay timer. Also, since the meat box drive motor and the round blade drive motor stop after cutting the chunk of meat once, it is possible to reliably cut one sheet, workability of cutting one sheet, and operability of the start switch. Can be greatly improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a front view showing a schematic configuration of a meat cutting machine. In the figure, 3 is a meat box, 7 is a meat box drive motor, 8 is a round blade drive motor, 9 is a round blade, 10 is a start switch, 11
Is a D-type flip-flop (holding circuit), 12 is a delay timer, 13 and 18 are AND gates, 14 and 15 are relay coils, 16 is a detector, and 17 is an inverter.

Claims (1)

[Scope of utility model registration request] 1. A meat box containing a chunk of meat is reciprocated by a meat box driving motor, and the meat is cut by a round blade rotated by a round blade driving motor during the reciprocating movement. The cutting machine has a starting switch and a holding circuit that senses that the starting switch has been turned on and electrically holds the starting switch, and receives the output signal of the holding circuit and drives the round blade driving motor. A first drive means, a delay means for delaying the output signal of the holding circuit for a predetermined time, a second drive means for receiving the output signal of the delay means to drive the meat box driving motor; When the switch is turned off, the holding circuit is released by a logical product of a signal obtained by logically inverting the off signal of the start switch and a signal from the detector that detects that the meat box has returned to a predetermined position. With circuit Control device for the meat cutting machine.