CN217165874U

CN217165874U - Sheet thickness measuring device

Info

Publication number: CN217165874U
Application number: CN202221021640.7U
Authority: CN
Inventors: 陈宏星; 王利平; 芦锋; 陈剑; 姚阳平; 李�杰; 张道飞; 王银斌; 魏俊; 钱冬东
Original assignee: Yangzhou Hanzhi Numerical Control Machinery Co ltd
Current assignee: Yangzhou Hanzhi Numerical Control Machinery Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-12
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a sheet thickness measuring device. The plate thickness measuring device comprises a bottom plate, wherein a back end face of the bottom plate is connected with a reciprocating device, a fixed arm is arranged on the front end face of the bottom plate, a lower roller is pivoted at the front end of the fixed arm, a fixed plate is arranged on the side wall of the bottom plate and used for mounting a rotary encoder, a swing arm is fixedly connected to an output shaft of the rotary encoder, an upper roller is pivoted at the front end of the swing arm, and the upper roller and the lower roller are matched to measure the thickness of a plate. The utility model provides a prior art structure complicated, problem that measurement accuracy is low.

Description

Sheet thickness measuring device

Technical Field

The utility model relates to a production facility technical field especially relates to a sheet material thickness measuring device.

Background

In an automatic production line in the field of metal plates, automatic feeding is carried out by an automatic feeding device of a numerical control turret punch press. However, the sheet is thin, when the suction disc sucks the sheet, a phenomenon of sucking a plurality of sheets occurs, and if a plurality of sheets are conveyed to the next station, the die and the equipment are damaged, so that a great loss is caused.

The existing device for detecting the thickness of the plate material in the automatic stamping and stretching production line, which is disclosed by the publication No. CN202356453U, has the disadvantages of complex structure, large error of a connecting rod during transmission and low measurement precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, the sheet material thickness measuring device that measurement accuracy is high to the not enough of prior art existence.

In order to achieve the above object, the utility model discloses technical scheme that sheet material thickness measuring device adopted is:

the utility model provides a sheet material thickness measuring device, includes the bottom plate, and the rear end face of bottom plate is connected with the back and forth movement device, and the preceding terminal surface of bottom plate is provided with the fixed arm, and the front end pin joint of fixed arm has down the gyro wheel, and the lateral wall of bottom plate is provided with the fixed plate, and the fixed plate is used for installing rotary encoder, and rotary encoder's output shaft rigid coupling has the swing arm, and the front end pin joint of swing arm has last gyro wheel, and upper and lower gyro wheel cooperation is measured sheet material thickness. When detecting the sheet material, the system sends the instruction to rotary encoder, and rotary encoder drives the swing arm to open to the settlement angle, and the reciprocating motion device pushes fixed arm and swing arm to the sheet material, and lower gyro wheel is contradicted the sheet material lower surface, and the system sends the instruction to rotary encoder, and rotary encoder drives the swing arm gyration, and upper gyro wheel is contradicted the sheet material upper surface, and the thickness of sheet material is calculated according to rotary encoder's the rotation angle this moment to the system.

Preferably, a tension spring is arranged between the swing arm and the fixed arm, one end of the tension spring is connected with the middle part of the swing arm, and the other end of the tension spring is connected with the middle part of the fixed arm. The extension spring ensures that the upper and lower rollers can be tightly attached when not working so as to ensure the measurement precision.

Preferably, the rear side of the swing arm is provided with a positioning pin, the positioning pin is coaxial with the output shaft of the rotary encoder, the rear side of the fixing arm is provided with a boss, and the boss is provided with a positioning hole into which the positioning pin is inserted. The locating pin inserts the locating hole, and the convenient assembly guarantees that the axis of upper and lower gyro wheel is in same vertical line when tangent to further improve measurement accuracy.

Preferably, one end of the positioning pin extending out of the positioning hole is provided with a groove, and a clamp spring is arranged in the groove. The clamp spring is clamped into the groove, so that the positioning pin is prevented from moving in the positioning hole.

Preferably, the reciprocating device is a cylinder. And the device can also be an oil cylinder or a lead screw transmission device.

Compared with the prior art, the utility model, have following advantage:

1. utilize rotary encoder to measure sheet material thickness, for prior art's connecting rod transmission, the structure is more simple, avoids transmission error, and the measuring result is more accurate.

2. The extension spring ensures that the upper and lower rollers can be tightly attached when not working so as to ensure the measurement precision.

3. The locating pin inserts the locating hole, and the convenient assembly guarantees that the axis of upper and lower gyro wheel is in same vertical line when tangent to further improve measurement accuracy.

Drawings

FIG. 1 is a schematic structural diagram of a sheet thickness measuring device;

FIG. 2 is an enlarged view at A of FIG. 1;

fig. 3 is a schematic structural view of a fixing arm;

fig. 4 is a schematic view of the swing arm.

The device comprises a frame 1, a reciprocating motion device 2, a base plate 3, a fixing arm 4, a lower roller 41, a boss 42, a positioning hole 43, a fixing plate 5, a rotary encoder 6, a swinging arm 7, an upper roller 71, a positioning pin 72, a groove 73, a snap spring 8 and a tension spring 9.

Detailed Description

The present invention will be further clarified by the following description in conjunction with the accompanying drawings, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the invention by those skilled in the art after reading the present invention are within the scope defined by the appended claims.

As shown in fig. 1-4, a plate thickness measuring device comprises a frame 1, a reciprocating device 2 is arranged on the frame, the reciprocating device is a cylinder, a telescopic end of the cylinder is fixedly connected with a bottom plate 3, a front end surface of the bottom plate is fixedly connected with a fixed arm 4, a front end of the fixed arm is pivotally connected with a lower roller 41, a side wall of the bottom plate is fixedly connected with a fixed plate 5, the fixed plate is used for mounting a rotary encoder 6, an output shaft of the rotary encoder is fixedly connected with a swing arm 7, a front end of the swing arm is pivotally connected with an upper roller 71, the upper roller and the lower roller are matched to measure the thickness of a plate, a rear side of the swing arm is integrally formed with a positioning pin 72, the positioning pin is coaxial with the output shaft of the rotary encoder, a rear side of the fixed arm is integrally formed with a boss 42, the boss is provided with a positioning hole 43 into which the positioning pin is inserted, so as to facilitate assembly, and ensure that the axes of the upper roller and the lower roller are on the same vertical line when the upper roller and the lower roller are tangent, thereby further improving the measuring accuracy, the one end that the locating pin stretches out the locating hole is seted up recess 73, inserts jump ring 8 in the recess, avoids the locating pin to drunkenness in the locating hole, arranges extension spring 9 between swing arm and the fixed arm, and the middle part of swing arm is connected to the one end of extension spring, and the middle part of fixed arm is connected to the other end, and the extension spring ensures that upper and lower gyro wheel can closely laminate when out of work to guarantee measurement accuracy.

The specific working process and principle of the plate thickness measuring device are as follows: when detecting the sheet, the system sends an instruction to the rotary encoder, the rotary encoder drives the swing arm to be opened to a set angle, the air cylinder pushes the fixed arm and the swing arm to the sheet, the lower roller abuts against the lower surface of the sheet, the system sends an instruction to the rotary encoder, the rotary encoder drives the swing arm to rotate, the upper roller abuts against the upper surface of the sheet, the system calculates the thickness of the sheet according to the rotating angle of the rotary encoder at the moment, the thickness of the sheet is compared with a set value of the system, if the thickness of the sheet is consistent with the set value of the system, the program automatically executes the next action (the feeding system drives the sheet to be fed in the feeding direction of the punch), if the values of the thickness of the sheet are inconsistent, the possibility that more than two sheets are adsorbed at the same time is indicated, the system alarms, the feeding system returns to a raw material table, the sucking disc is deflated, and the sucking work of the raw materials is carried out again. The utility model discloses simple structure, measurement accuracy is high.

Claims

1. The utility model provides a sheet thickness measuring device which characterized in that: the plate thickness measuring device comprises a base plate, wherein a back end face of the base plate is connected with a reciprocating device, a fixed arm is arranged on the front end face of the base plate, a lower roller is pivoted at the front end of the fixed arm, a fixed plate is arranged on the side wall of the base plate and used for installing a rotary encoder, a swing arm is fixedly connected to an output shaft of the rotary encoder, an upper roller is pivoted at the front end of the swing arm, and the upper roller and the lower roller are matched to measure the plate thickness.

2. The sheet thickness measuring device according to claim 1, characterized in that: and a tension spring is arranged between the swinging arm and the fixed arm, one end of the tension spring is connected with the middle part of the swinging arm, and the other end of the tension spring is connected with the middle part of the fixed arm.

3. The sheet thickness measuring device according to claim 2, wherein: the rear side of the swing arm is provided with a positioning pin which is coaxial with an output shaft of the rotary encoder, the rear side of the fixed arm is provided with a boss, and the boss is provided with a positioning hole into which the positioning pin is inserted.

4. The sheet thickness measuring device according to claim 3, wherein: and one end of the positioning pin extending out of the positioning hole is provided with a groove, and a clamp spring is arranged in the groove.

5. The sheet thickness measuring device according to claim 1, characterized in that: the reciprocating device is a cylinder.