CN-224215998-U - Diameter-variable circumference length standard rod

Abstract

The utility model provides a variable diameter circumference length standard rod which comprises a base rod body and a variable diameter circumference measuring assembly arranged on the base rod body, wherein the variable diameter circumference measuring assembly comprises a plurality of circumference length standard parts which are arranged in a complete set, the circumference lengths of the circumference length standard parts are different, one end of the base rod body is a circumference length detection area, and the circumference length is changed by switching different circumference length standard parts to the circumference length detection area of the base rod body. The diameter-variable circumference length standard rod has the advantages of realizing multi-circumference length calibration in a diameter-variable mode and being more suitable for automation application.

Inventors

• ZHANG PENGFEI
• ZHANG QING
• MIAO QIAN
• HE CHEN
• LI DONG
• YE CHANGWEN
• LV XIAOLIANG
• WU XIAOCHENG
• SHEN LONGWU
• NING YINGHAO
• HE JIANFEI
• YANG RONGCHAO
• SHI ZHANDONG
• TIAN CONGCONG
• ZENG BO
• YU QIANYUAN

Assignees

• 中国烟草总公司郑州烟草研究院
• 郑州嘉德机电科技有限公司

Dates

Publication Date

20260508

Application Date

20250618

Claims (10)

1. 1. The diameter-variable circumference length standard rod is characterized by comprising a basic rod body and a diameter-variable circumference measuring assembly arranged on the basic rod body; The diameter-variable circumference measurement assembly comprises a plurality of circumference length standard components which are arranged in a complete set, and the circumference lengths of the circumference length standard components are different; One end of the basic rod body is a circumference length detection area; The change of the circumference length is realized by switching different circumference length standard components to the circumference length detection area of the basic rod body.
2. 2. The diameter-variable circumferential length standard rod of claim 1, wherein the base rod body has an inner shaft at one end corresponding to the circumferential length detection area, the plurality of circumferential length standard members are annular modules nested and assembled with each other, the innermost annular module is in sliding fit with the inner shaft, and the adjacent annular modules are in sliding fit with each other, each layer of annular module can move independently, and the circumferential length is changed by increasing or decreasing the number of annular modules stacked in the circumferential length detection area.
3. 3. The variable diameter circumferential length standard rod of claim 2, wherein the outer end of the inner shaft is provided with a nut.
4. 4. A variable diameter circumferential length standard rod according to claim 2 or 3, wherein the surface of the annular modules is provided with axial guide grooves, the tail ends of the guide grooves are provided with locking grooves which are 90 degrees with the guide grooves, the end parts of each annular module are provided with locking blocks which are in sliding fit with the guide grooves, and the locking blocks slide into the locking grooves of the adjacent inner annular modules for axially locking the adjacent annular modules.
5. 5. The variable diameter circumferential length modular rod of claim 4, wherein the end of the annular module for mounting the locking block is provided with a stop ring.
6. 6. The variable diameter circumferential length standard rod of claim 2, 3 or 5, wherein the diameter of the base rod body is greater than or equal to the outer diameter of the outermost annular module.
7. 7. The diameter-variable circumferential length standard rod according to claim 1, wherein the base rod body is provided with a lock hole corresponding to one end of the circumferential length detection area, the plurality of circumferential length standard pieces forming the diameter-variable circumferential measurement assembly are a group of circumferential rods with different outer diameters, one end of the circumferential rod is provided with a lock shaft corresponding to the lock hole, and the circumferential length is changed by replacing the circumferential rods with different outer diameters to be matched with the base rod body.
8. 8. The variable diameter circumferential length standard rod of claim 7, wherein the locking hole is provided with a locking pin hole in the radial direction, and the locking shaft is provided with a locking ring in the area corresponding to the locking pin hole.
9. 9. The variable diameter circumferential length standard rod of claim 7 or 8, wherein the outer diameter of each circumferential rod varies in a gradient.
10. 10. The diameter-variable circumference length standard rod of claim 1, wherein two-dimensional codes carrying parameter information are arranged on circumference standard components in the diameter-variable circumference measurement assembly.

Description

Diameter-variable circumference length standard rod Technical Field The utility model relates to the technical field of standard appliances, in particular to a diameter-variable circumference length standard rod. Background The national standard GB/T22838.5-2009 'determination of physical properties of cigarettes and filter sticks' specifies detection requirements and corresponding determination specifications for various properties of cigarettes, wherein a third part specifies a method for detecting the circumferential lengths of the cigarettes and the filter sticks, and the circumferential determination method given in the current specification is to obtain a circumferential length value after 360-degree scanning of the cigarettes or the filter sticks by using an optical instrument, and then calculate an average value after detecting groups of cigarettes and filter sticks in the same batch. Since this manner of non-contact optical measurement depends on the accuracy of the optical instrument, it is necessary to perform periodic calibration of the optical measurement instrument. Currently, the standard device for calibrating optical instruments applied to a cigarette filter rod comprehensive test bench is called a circumference standard rod, which is a standard rod designed to have a set circumference length, usually arranged in groups, and has gradient changes of the circumference length so as to calibrate a plurality of detection values in a limited range. Because of the existence of gradient demand, the circumference standard stick needs a plurality of standard sticks to use in groups, uses the loaded down with trivial details degree higher, when carrying out automated transformation, when needs automatic circumference length calibration, just needs to design the manipulator of automatic change circumference standard stick of a set, has the problem that input cost is high, the design degree of difficulty is big. To overcome the above problems, it is necessary to modify the existing circumferential standard rod so that it can meet the calibration requirements of the existing optical measuring instrument. In order to solve the above problems, an ideal technical solution is always sought. Disclosure of utility model The utility model aims at overcoming the defects of the prior art, and provides a variable diameter circumference length standard rod which can realize multi-circumference length calibration in a variable diameter mode and is more suitable for automation application. In order to achieve the aim, the technical scheme adopted by the utility model is that the diameter-variable circumference length standard rod comprises a basic rod body and a diameter-variable circumference measuring assembly arranged on the basic rod body; The diameter-variable circumference measurement assembly comprises a plurality of circumference length standard components which are arranged in a complete set, and the circumference lengths of the circumference length standard components are different; One end of the basic rod body is a circumference length detection area; The change of the circumference length is realized by switching different circumference length standard components to the circumference length detection area of the basic rod body. Based on the above, the one end of the base rod body corresponding to the circumference length detection area is an inner shaft, the circumference length standard components are annular modules which are nested and assembled with each other, the innermost annular module is in sliding fit with the inner shaft, and the adjacent two annular modules are in sliding fit with each other, and each layer of annular module can move independently, so that the circumference length is changed by increasing or decreasing the number of annular modules overlapped in the circumference length detection area. The nut is arranged at the outer end of the inner shaft. The surface of the annular module is provided with an axial guide groove, the tail end of the guide groove is provided with a locking groove which is 90 degrees with the guide groove, the end part of each annular module is provided with a locking block which is in sliding fit with the guide groove, and the locking blocks slide into the locking grooves of the adjacent inner annular modules and are used for axially locking the adjacent annular modules. The end of the annular module for mounting the locking block is provided with a stop ring as described above. The diameter of the base rod body is larger than or equal to the outer diameter of the outermost annular module. Based on the above, the basic stick body corresponds circumference length detection zone's one end and sets up the lockhole, constitutes a plurality of circumference length standard part of variable diameter circumference measurement subassembly is a set of external diameter different circumference stick, the one end of circumference stick corresponds the lockhole and sets