CN202088659U

CN202088659U - Device for measuring printing pressure

Info

Publication number: CN202088659U
Application number: CN2011201407178U
Authority: CN
Inventors: 张改梅; 王辉; 蔡栋生
Original assignee: Beijing Institute of Graphic Communication
Current assignee: Beijing Institute of Graphic Communication
Priority date: 2011-05-05
Filing date: 2011-05-05
Publication date: 2011-12-28
Anticipated expiration: 2021-05-05

Abstract

The utility model relates to a device for measuring printing pressure. The device for measuring the printing pressure comprises a pressure sensor, a signal conditioning circuit and an output device; the pressure sensor is used for receiving pressure among rollers or inking rollers to be measured and converting the pressure into an analog signal; the signal conditioning circuit is used for processing and treating the signal outputted by the pressure sensor and converting the signal into a signal which is convenient to transmit, display, record and output; and the output device is used for displaying and recording the size of the pressure to be measured and outputting a control signal which is correlated to the pressure to be measured, so that the control signal can be used by operators or other systems. The device for measuring the printing pressure has the advantages that: the device for measuring the printing pressure can accurately and rapidly measure the printing pressure independently and can continuously monitor the change of the printing pressure through being combined with a printer in work and meanwhile carry out real-time open loop control or closed loop control on the printing pressure.

Description

A kind of squeegee pressure measurement mechanism

Technical field

The utility model relates to a kind of squeegee pressure measurement mechanism, belongs to printing equipment manufacturing technology field.

Background technology

The black trace method of pressing is generally adopted in press printing pressure measxurement at present, promptly coat printing ink at the roller or the cylinder surface of measured pressure, under the tripping state paper slip is being put between roller or the cylinder, tripping again after the combined pressure takes out paper slip and judges the size of squeegee pressure by observing the width that extrudes black trace on the paper slip.Though it is simple to press black trace method to measure squeegee pressure, has following shortcoming: at first, must coat printing ink earlier on ink roller and the cylinder during gaging pressure, if there is not printing ink just can't measure squeegee pressure, measuring condition is relatively harsher; Secondly, between the roller and roller of measured pressure, must possess between roller and cylinder or between cylinder and cylinder can tripping, the condition of combined pressure, and for those pressure between can not the roller of clutch energy measurement not just; Press black trace method to measure the method that squeegee pressure belongs to indirect measurement, can't directly obtain force value, there is bigger error in its result.

Summary of the invention

The purpose of this utility model provide a kind of can be accurately, independent measurement squeegee pressure efficiently, can combine the squeegee pressure measurement mechanism that continues to monitor the squeegee pressure variation with the printing machine in the work again.

The purpose of this utility model is achieved through the following technical solutions:

The utility model comprises: pressure sensor, signal conditioning circuit and output device, pressure sensor are used for converting the pressure signal between measured cylinder or ink roller to analog signal, and described analog signal is sent to signal conditioning circuit; Signal conditioning circuit is used for the analog signal conversion of pressure sensor output is become conditioned signal, and described conditioned signal is sent to output device; Output device is used for showing, writing down according to the conditioned signal of signal conditioning circuit output the size of measured pressure, and the output control signal relevant with measured pressure, uses for operator or other system.

The utility model has the advantages that: promptly can be accurately, independent measurement squeegee pressure efficiently, can combine the variation that continues to monitor squeegee pressure with the printing machine in the work again, simultaneously squeegee pressure is carried out real-time open loop control or closed-loop control.

Description of drawings

Fig. 1 is the schematic diagram of the squeegee pressure measurement mechanism that provides of the utility model embodiment,

Fig. 2 is the schematic diagram of the self squeegee pressure measurement mechanism that provides of the utility model embodiment,

Fig. 3 is the schematic diagram of the compound squeegee pressure measurement mechanism that provides of the utility model embodiment;

Fig. 4 is the structural representation of the signal conditioning circuit that provides of the utility model embodiment.

The specific embodiment

The utility model preferred embodiment is as follows:

Embodiment 1, referring to Fig. 1, comprise: pressure sensor 1, signal conditioning circuit 2 and output device 3, described pressure sensor 1 is accepted from the pressure between measured cylinder or ink roller and is converted analog signal to, signal conditioning circuit 2 is processed the signal of pressure sensor 1 output and handle, convert to and be convenient to the conditioned signal transmitting, show, write down and export, output device 3 is used for showing, writing down the size of measured pressure, export the control signal relevant, use for operator or other system with measured pressure.

Embodiment 2, present embodiment are a kind of self squeegee pressure measurement mechanisms, as shown in Figure 2, comprise pressure sensor 1, signal conditioning circuit 2 and output device 3.Roller above needs detect or cylinder 4 and below roller or during the pressure between the cylinder 5, roller or cylinder 4 and following roller or cylinder 5 above rotating, pressure sensor 1 rolled between described roller or

cylinder

4 and 5 accept pressure and convert analog signal to, signal conditioning circuit 2 is processed the signal of pressure sensor 1 output and handle, convert the demonstration signal to and pass to output device 3, the demonstration signal transition that output device 3 will receive becomes reading, to read measured value.

Embodiment 3, present embodiment are a kind of compound squeegee pressure measurement mechanisms, as shown in Figure 3, comprise the pressure sensor 1 that is installed on detected roller or the cylinder 4, and signal conditioning circuit 2 and output device 3 also comprise squeegee pressure adjusting device 6.Pressure sensor 1 is installed on superincumbent roller or the cylinder 4, can accept top roller or cylinder 4 and following roller or the pressure between the cylinder 5 during work and convert analog signal to, signal conditioning circuit 2 is processed the signal of pressure sensor 1 output and handle, convert the demonstration signal to and pass to output device 3, output device 3 both can be used for showing, write down the size of measured pressure, can export the control signal relevant again with measured pressure, offer the squeegee pressure adjusting device 6 of printing machine, be used to regulate top roller or cylinder 4 and following roller or the pressure between the cylinder 5, up to top roller or cylinder 4 and below roller or the pressure between the cylinder 5 reach setting scope within till.

In embodiment 1～3, the structural representation of corresponding signal conditioning circuit 2 can be with reference to figure 4, conditioning amplifier circuit unit wherein is used for voltage signal with the sensor input and is converted to 0～± the 10V scope in; It is that one road signal is input to the AD Acquisition Circuit that gating circuit is used for four road signal gatings; It is data signal that the AD Acquisition Circuit is used for analog signal conversion; Level shifting circuit is used for data signal with+5V level and is converted to+data signal of 3.3V; Memory circuit is used to store the test value of some; LCDs is used to show current measured value; Level-conversion circuit be used for will the input power supply be converted to circuit required ± the 15V power supply ,+5V ,+3.3V.

The technical scheme that adopts this specific embodiment to provide, after the signal of pressure sensor collection is nursed one's health, export by output device, use for operator or other system, promptly can be accurately, independent measurement squeegee pressure efficiently, can combine the variation that continues to monitor squeegee pressure with the printing machine in the work again, simultaneously squeegee pressure be carried out real-time open loop control or closed-loop control.

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; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims

1. a squeegee pressure measurement mechanism is characterized in that, comprising:

Pressure sensor is used for converting the pressure signal between measured cylinder or ink roller to analog signal, and described analog signal is sent to signal conditioning circuit;

Signal conditioning circuit is used for the analog signal conversion of pressure sensor output is become conditioned signal, and described conditioned signal is sent to output device;

Output device is used for the conditioned signal demonstration according to signal conditioning circuit output, the size of the measured pressure of record, and the output control signal relevant with measured pressure, uses for operator or other system.

2. squeegee pressure measurement mechanism according to claim 1 is characterized in that, this device also comprises:

The squeegee pressure adjusting device is used for the control signal relevant with measured pressure according to output device output, the pressure between dancer rools or the cylinder.

3. squeegee pressure measurement mechanism according to claim 2 is characterized in that, described pressure sensor is arranged on the roller or cylinder of upper end.