CN108000334A - Silk cutting machine emery wheel exhausts detection and alarm system - Google Patents

Abstract

The invention provides a grinding wheel exhaustion detection and alarm system for a stem cutter, which includes a guide rail, a motor seat slidably arranged on the guide rail, a grinding wheel exhaustion detection block arranged on the motor seat, and a left The inductive proximity switch and the right inductive proximity switch, as well as the PLC controller and alarm device, the grinding wheel motor is installed on the motor base, the grinding wheel is installed on the grinding wheel motor, the signal of the left inductive proximity switch and the right inductive proximity switch The output end is connected to the PLC controller, the signal output end of the PLC controller is connected to the alarm device, and the PLC controller sends out a corresponding alarm signal to alarm system. The invention is reasonable in design, simple in structure and easy in implementation, while ensuring the detection and alarm functions of the original grinding wheel exhaustion, and at the same time controlling more precisely, and improving the utilization rate of the grinding wheel.

Description

Grinding Wheel Exhaustion Detection and Alarm System for Stem Cutting Machine

technical field

The invention relates to the technical field of automatic control of tobacco shred production, in particular to a system for detecting and alarming the exhaustion of a grinding wheel of a stem cutter.

Background technique

Stem cutting is an important process in tobacco processing. At present, most of the stem cutting machines used in the domestic tobacco industry are the SQ344 curved blade horizontal hob type cutting machines produced by Kunchuan. The grinding wheel exhaustion detection element of this type of wire cutter is a spring-type limit switch. Since the installation angle of this limit switch is 90° to the grinding wheel detection point, in actual production, when the grinding wheel exhaustion detection screw presses the limit After switching the contact, the grinding wheel motor only alarms but does not stop, so the grinding wheel can continue to go down. At this time, the contact is often broken due to uneven force, and the elastic deformation of the spring after the force is easily weakened, resulting in pressure. After that, it cannot be reset to generate a false alarm.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art and design, the present invention provides a grinding wheel exhaustion detection and alarm system for a stem cutter, which can achieve the function of grinding wheel detection, alarm and parking.

A grinding wheel exhaustion detection and alarm system for a stalk cutting machine, including a guide rail, a motor seat slidably arranged on the guide rail, a grinding wheel exhaustion detection block arranged on the motor seat, and a left inductive proximity sensor installed on the left and right sides of the guide rail. The switch and the right inductive proximity switch, as well as the PLC controller and alarm device, the grinding wheel motor is installed on the motor seat, the grinding wheel is installed on the grinding wheel motor, the signal output terminals of the left inductive proximity switch and the right inductive proximity switch are connected to the The PLC controller is connected, the signal output terminal of the PLC controller is connected to the alarm device, and the PLC controller sends a corresponding alarm signal to the alarm device according to the situation of the grinding wheel exhaustion detection block sensed by the left inductive proximity switch or the right inductive proximity switch.

Further, when the grinding wheel exhaustion detection block moves left out of the sensing area of the right inductive proximity switch, the right inductive proximity switch sends a sensing signal to the PLC controller, and the PLC controller sends a first alarm signal to the alarm device, prompting that the grinding wheel is about to Exhaustion; when the grinding wheel exhaustion detection block moves to the left inductive proximity switch sensing area, the left inductive proximity switch sends a sensing signal to the PLC controller, and the PLC controller controls the grinding wheel motor to stop, and at the same time sends out a second alarm signal Give the alarm device that the grinding wheel is exhausted.

The patented invention has reasonable design, simple structure, and easy implementation. While ensuring the detection and alarm functions of the original grinding wheel exhaustion, it can control more accurately and improve the utilization rate of the grinding wheel.

Description of drawings

Fig. 1 is a side view of the present invention;

Fig. 2 is the end view of the present invention;

Fig. 3 is a schematic block diagram of the circuit in the present invention.

In the figure: 1—Guide rail, 2—Left inductive proximity switch, 3—Grinding wheel, 4—Grinding wheel motor, 5—Motor seat, 6—Grinding wheel exhaustion detection block, 7—Right inductive proximity switch, 8—PLC Controller, 9—alarm device.

Detailed ways

The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

Please refer to Fig. 1-3, the grinding wheel exhaustion detection and alarm system of the stalk cutting machine of the present invention includes a guide rail 1, a motor base 5 slidingly arranged on the guide rail 1, a grinding wheel exhaustion detection block 6 located on the motor base 5, an installation On the left and right sides of the guide rail 1, the left inductive proximity switch 2 and the right inductive proximity switch 7, as well as the PLC controller 8 and the alarm device 9, the grinding wheel motor 4 is installed on the motor base 5, and the grinding wheel motor 4 is equipped with a grinding wheel 3. The signal output ends of the left inductive proximity switch 2 and the right inductive proximity switch 7 are connected to the PLC controller 8 , and the signal output ends of the PLC controller 8 are connected to the alarm device 9 . The grinding wheel exhaustion detection block 6 is installed on the motor base 5, and is as long as the whole grinding wheel 3 strokes. The output signals of the two proximity switches are detected by the PLC controller 8 to achieve the function of grinding wheel detection, alarm and parking.

The invention adopts an inductive proximity switch, which can be detected in a non-contact manner, so the detected object will not be worn or damaged. There are two inductive proximity switches, namely the left inductive proximity switch 2 and the right inductive proximity switch 7, wherein the proximity switch of the closed point detection method (ie the left inductive proximity switch 2) is installed at the lower end of the guide rail 1 (The reason why the open point detection is not selected here is to prevent that when the proximity switch is faulty, the grinding wheel exhaustion detection block 6 reaches the sensing area and does not trigger an alarm, so that the grinding wheel motor 4 continues downward and causes damage to the feeding device), open point detection The proximity switch (that is, the right side inductive proximity switch 7) of the mode is installed on the upper end of the guide rail 1.

The working principle of the present invention: as the production proceeds, the grinding wheel motor 4 runs slowly to the left, and the grinding wheel exhaustion detection block 6 moves to the left equidistantly, when the grinding wheel exhaustion detection block 6 moves left out of the sensing area of the right inductive proximity switch 7 , the right inductive proximity switch 7 sends an induction signal to the PLC controller 8, and the PLC controller 8 sends the first alarm signal to the alarm device 9, and an alarm that the emery wheel will be exhausted will appear on the operating screen of the shredding machine. It will not stop, and the grinding wheel motor 4 can continue to run to the left; when the grinding wheel exhaustion detection block 6 moves left to the sensing area of the left inductive proximity switch 2, the left inductive proximity switch 2 sends an induction signal to the PLC controller 8 , the PLC controller 8 controls the grinding wheel motor 4 to stop immediately, and simultaneously sends a second alarm signal to the alarm device 9, and an alarm that the grinding wheel has been exhausted and please change can appear on the operation screen.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any changes or substitutions that can be easily imagined by those skilled in the art within the technical scope disclosed in the present invention, All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (2)

1. A system for detecting and alarming the exhaustion of the emery wheel of the stem cutting machine, characterized in that: it comprises a guide rail (1), a motor seat (5) slidingly arranged on the guide rail (1), and a motor seat (5) arranged on the motor seat (5). The grinding wheel exhaustion detection block (6), the left inductive proximity switch (2) and the right inductive proximity switch (7) installed on the left and right sides of the guide rail (1), as well as the PLC controller (8) and the alarm device ( 9), the grinding wheel motor (4) is installed on the motor base (5), the grinding wheel (3) is installed on the grinding wheel motor (4), the left inductive proximity switch (2) and the right inductive proximity switch (7) The signal output end is connected with the PLC controller (8), and the signal output end of the PLC controller (8) is connected with the alarm device (9). The situation of the grinding wheel exhaustion detection block (6) induced by the type proximity switch (7) sends a corresponding alarm signal to the alarm device (9). 2. The grinding wheel exhaustion detection and alarm system of the stem cutter according to claim 1, characterized in that: when the grinding wheel exhaustion detection block (6) moves left out of the sensing area of the right inductive proximity switch (7), the right The side inductive proximity switch (7) sends an induction signal to the PLC controller (8), and the PLC controller (8) sends the first alarm signal to the alarm device (9), prompting that the grinding wheel (3) is about to be exhausted; when the grinding wheel is exhausted When the detection block (6) moves left to the sensing area of the left inductive proximity switch (2), the left inductive proximity switch (2) sends an induction signal to the PLC controller (8), and the PLC controller (8) controls the grinding wheel motor (4) stop, and send the second alarm signal to the alarm device (9) simultaneously, prompting that the emery wheel is exhausted.