CN201366804Y

CN201366804Y - Slider angle detector for mechanical press

Info

Publication number: CN201366804Y
Application number: CNU200820239245XU
Authority: CN
Inventors: 彭杰
Original assignee: China First Heavy Industries Co Ltd; CFHI Dalian Design and Research Institute Co Ltd
Current assignee: China First Heavy Industries Co Ltd; CFHI Dalian Design and Research Institute Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-12-23
Anticipated expiration: 2018-12-29

Abstract

The utility model discloses a slider angle detector for a mechanical press, which is characterized in that the slider angle detector comprises a Gray excess code absolute encoder with parallel output signals and a PLC switching value input module; wherein the Gray excess code absolute encoder is mounted on the crank of the press; as the crank of the press rotates, the Gray excess code absolute encoder generates digital switching value signals which are transmitted into the PLC switching value input module through a wire; the PLC switching value input module sends the acquired digital switching value signals to a CPU for processing; and finally, the digital switching value signals are transmitted to an HMI touch type display screen and displayed. The detector is characterized by high resolution, high precision, easy regulation, cheapness and the like, and can be widely used on large mechanism presses.

Description

A kind of punching machine slide block angle detection device

Technical field

The utility model relates to a kind of checkout gear, relates in particular to a kind of checkout gear that is applied to big machinery press ram angle.

Background technology

Punching machine requires to have slide block angle Presentation Function to carry out normal operations to remind operating personnel.Adopted the slide block angle detecting method on the big machinery forcing press, selsyn sender and a cover selsyn receiver Japanese by a cover constitute in the past, and control principle more complicated, price are also relatively more expensive.Bring following problem in the use:

1, because punching machine slide block angle calibration need be readjusted the sender Shaft angle, adjusts difficulty.

2, sender and receiver signal are analog signal instrumentations, and display precision is not high, and inaccuracy is not directly perceived.

3, inconvenient operation is not easy to safeguard, price is also relatively more expensive.

Summary of the invention

The utility model is at the proposition of above problem, and develops a kind of checkout gear that utilizes the Gray code absolute type encoder to detect punching machine slide block angle.The technological means that the utility model adopts is as follows:

A kind of punching machine slide block angle detection device is characterized in that comprising Gray's complementary absolute type encoder and PLC switching input module; Gray's complementary absolute type encoder is installed on the crank of forcing press, along with the rotation Gray complementary absolute type encoder of crank press produces the switching value data signal, and is sent in the PLC switching input module by electric wire; Described PLC switching input module meets at CPU with the switching value data signal that collects and handles, after be sent to the HMI touching display screen and show; Described Gray's complementary absolute type encoder is input to the switching value data signal in the PLC switching input module by the parallel way of output.

Because it is conspicuous that the checkout gear that has adopted technique scheme, the utility model to provide can make forcing press compare its advantage with traditional equipment, specific as follows:

1) Gray's complementary absolute type encoder signal is a data signal, resolution ratio height, precision height.

2) punching machine slide block angle calibration is by program, and adjustment is easy to.

3) gather signal with the switching input module of PLC, price is very low.

And this device is also very convenient in production debugging, has also reduced breakdown rate widely simultaneously, is suitable for extensively promoting on the big machinery press equipment.

Description of drawings

The utility model has only a width of cloth accompanying drawing:

Fig. 1 circuit structure block diagram of the present utility model.

The specific embodiment

Gray's complementary absolute type encoder 1 of the utility model utilization and line output detects punching machine slide block angle, its detection signal is given PLC switching input module, send the angle numerical signal after utilizing the process software of working out to handle through PLC, give the HMI touching display screen again, show punching machine slide block angle.Adopt this method to replace traditional punching machine slide block angle detection device, so not only reduced equipment cost, and also very convenient in production debugging.

This punching machine slide block angle detection device as shown in Figure 1, Gray's complementary absolute type encoder 1 is installed on the crank of forcing press, the output signal of encoder is a binary system Gray complementary signal, rotation along with crank press, the encoder of rotation provides eight channel switch amount data signals that become corresponding relation with the anglec of rotation, the switching value data signal of eight passages is 24 volts of d. c. voltage signals, this signal is by the connection of general electric wire 2, output to PLC switching input module 3 (that is: 16 switching input modules), after this signal is handled by 3 collections of PLC switching input module and through CPU, process software by prior establishment carries out the numeral transmission, Gray code conversion, become floating number, round, finally obtain the correct angle of punching machine slide block angle.Symbol 4 among the figure is 24 volts of dc sources.The collection transmission and the processing procedure of concrete signal are as follows:

1) collects also Gray's complementary absolute type encoder switching value signal of line output by PLC switching input module 3.

2) CPU is transformed into binary code with the Gray's complementary signal that collects.

3) CPU deducts binary code the complementary row operation of going forward side by side again.

4) at last it being transformed into decimal code gives the HMI touching display screen again and shows.

The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of punching machine slide block angle detection device is characterized in that comprising Gray's complementary absolute type encoder (1) and PLC switching input module (3) with parallel output signal; Gray's complementary absolute type encoder (1) is installed on the crank of forcing press, along with the rotation Gray complementary absolute type encoder (1) of crank press produces the switching value data signal, and is sent in the PLC switching input module (3) by electric wire (2); Described PLC switching input module (3) meets at CPU with the switching value data signal that collects and handles, after be sent to the HMI touching display screen and show.

2, a kind of punching machine slide block angle detection device according to claim 1 is characterized in that described Gray's complementary absolute type encoder is input to the switching value data signal in the PLC switching input module by the parallel way of output.