Core roundness measuring instrument
By designing a core roundness measuring instrument, using telescopic rods and pressure sensors to sense the shape changes of the inner wall of the core, the problem that existing equipment cannot measure the core roundness, and the accurate measurement of the core roundness is achieved to ensure the film quality.
Patent Information
- Application Number
- CN202421494418.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-26
AI Technical Summary
Existing equipment cannot or is difficult to measure the roundness of the core, resulting in the possibility of unrounding the core during the film rolling process, which leads to film quality problems.
A core roundness measuring instrument is designed, including a base, a vertical rod and two measuring components. By driving the telescopic rod, the roller abuts the cylinder wall of the core, and uses a pressure sensor to sense the squeeze pressure of the roller to the cylinder wall to calculate the circularity of the core.
Accurate measurement of the circularity of the roll core is achieved, and the changes in the inner wall shape of the roll core can be effectively evaluated, thereby ensuring the roundness and quality of the film.
Smart Images
Figure CN222733509U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring instruments, and more specifically to a winding core roundness measuring instrument. Background Art
[0002] After the film is produced, it needs to be wound around a core to achieve film reeling. The core is generally a hollow structure, and when purchasing the core, the manufacturer needs to measure the roundness of the core. Existing equipment cannot or is difficult to achieve the above measurement process. Utility Model Content
[0003] 1. Technical issues to be resolved
[0004] The technical problem to be solved by the utility model is how to measure the roundness of the winding core by means of equipment.
[0005] (II) Technical solution
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] The utility model provides a roll core roundness measuring instrument, comprising a base, a vertical pole and two measuring components; the vertical pole is connected to the base; the measuring component comprises a telescopic rod, a pressure sensor, a roller, a spring and a wheel axle, the telescopic rod is connected to the vertical pole, the telescopic end of the telescopic rod is slidably connected with the wheel axle, the end of the wheel axle away from the telescopic rod is rotatably connected with the roller, the end of the telescopic rod is connected with the pressure sensor, one end of the spring is connected to the pressure sensor, and the other end of the spring is connected to the wheel axle, the axis angle of the telescopic rods of the two measuring components is 180 degrees, and the rollers of the two measuring components are arranged relatively.
[0008] Preferably, the core roundness measuring instrument further comprises a plurality of wheels, and the wheels are rotatably connected to the bottom of the base.
[0009] Preferably, the wheel is a self-locking universal wheel.
[0010] Preferably, the core roundness measuring instrument further comprises a fastener, the telescopic rod is provided with a first threaded hole, the vertical rod is provided with a second threaded hole corresponding to the first threaded hole, and the fastener passes through the first threaded hole and is threadedly connected with the second threaded hole.
[0011] Preferably, the vertical pole is a telescopic rod.
[0012] Preferably, the core roundness measuring instrument further comprises a display and a power supply, wherein the power supply is electrically connected to the display, and the display is electrically connected to the pressure sensor.
[0013] Preferably, the telescopic rod comprises a rod body and a connecting rod, the connecting rod has a vertical section and a horizontal section which are vertically connected, the vertical section is vertically connected to the telescopic end of the rod body, and the end of the horizontal section is slidably connected to the wheel axle.
[0014] Preferably, the core roundness measuring instrument further comprises a driving assembly, wherein the driving assembly is connected to the base, and an output end of the driving assembly is connected to the vertical rod, and the driving assembly can drive the vertical rod to rotate.
[0015] (III) Beneficial effects
[0016] The above technical solution of the utility model has at least the following advantages:
[0017] The utility model drives the telescopic rod to make the rollers of the two measuring components abut against the cylinder wall of the winding core. The vertical rod drives the roller to move along the cylinder wall of the winding core. The roller is squeezed by the cylinder wall to compress the spring, and the spring transmits the force to the pressure sensor. The change of the shape of the inner wall of the winding core is measured by the change of the value of the pressure sensor, and the value is calculated and analyzed to calculate the roundness of the winding core. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 It is a structural schematic diagram of a core roundness measuring instrument provided in an embodiment of the utility model.
[0020] Figure 2 It is a schematic diagram of the folded state of the core roundness measuring instrument provided by the embodiment of the utility model.
[0021] Figure 3 It is a structural schematic diagram of a measurement component provided in an embodiment of the utility model.
[0022] Figure 4 This is one of the use embodiments of the core roundness measuring instrument provided by the utility model.
[0023] Figure 5 This is the second use embodiment of the core roundness measuring instrument provided by the utility model embodiment.
[0024] The reference numerals in the figures are:
[0025] 10. winding core; 1. base; 2. upright pole; 3. measuring assembly; 4. wheel; 5. fastener; 6. display;
[0026] 31. telescopic rod; 32. pressure sensor; 33. roller; 34. spring; 35. axle; 311. rod body; 312. connecting rod; 3121. vertical section; 3122. horizontal section. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.
[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The following is a more detailed description of the specific implementation of the present utility model in conjunction with specific embodiments:
[0031] like Figure 1 and Figure 3 As shown, an embodiment of the utility model provides a core roundness measuring instrument, including a base 1, a vertical pole 2 and two measuring components 3; the vertical pole 2 is connected to the base 1; the measuring component 3 includes a telescopic rod 31, a pressure sensor 32, a roller 33, a spring 34 and a wheel axle 35, the telescopic rod 31 is connected to the vertical pole 2, the telescopic end of the telescopic rod 31 is slidably connected with the wheel axle 35, the end of the wheel axle 35 away from the telescopic rod 31 is rotatably connected with the roller 33, the end of the telescopic rod 31 is connected to the pressure sensor 32, one end of the spring 34 is connected to the pressure sensor 32, and the other end of the spring 34 is connected to the wheel axle 35, the axis angle between the telescopic rods 31 of the two measuring components is 180 degrees, and the rollers 33 of the two measuring components are arranged opposite to each other.
[0032] As one of the optional implementations of this embodiment, the core roundness measuring instrument further includes a plurality of wheels 4 , which are rotatably connected to the bottom of the base 1 .
[0033] As an optional implementation of this embodiment, the wheel 4 is a self-locking universal wheel.
[0034] As one of the optional implementations of this embodiment, the core roundness measuring instrument further includes a fastener 5, a first threaded hole is provided on the telescopic rod 31, a second threaded hole corresponding to the first threaded hole is provided on the vertical rod 2, and the fastener 5 passes through the first threaded hole and is threadedly connected with the second threaded hole. Specifically, the fastener 5 includes but is not limited to screws and bolts. The fastener 5 can be loosened, and then the telescopic rod 31 is adjusted to be parallel to the vertical rod 2, that is, Figure 2 The state shown in the figure is to reduce the space occupied by the telescopic rod 31 and facilitate the storage of the core roundness measuring instrument.
[0035] As one of the optional implementations of this embodiment, the vertical rod 2 is a retractable rod, so that the vertical rod 2 can be retracted for easy storage.
[0036] As one of the optional implementations of this embodiment, the core roundness measuring instrument further includes a display 6 and a power supply (not shown), the power supply is electrically connected to the display, and the display is electrically connected to the pressure sensor 32 .
[0037] As one of the optional implementations of this embodiment, the telescopic rod 31 includes a rod body 311 and a connecting rod 312, the connecting rod 312 has a vertical section 3121 and a horizontal section 3122 that are vertically connected, the vertical section 3121 is vertically connected to the telescopic end of the rod body 311, and the end of the horizontal section 3122 is slidably connected to the wheel axle 35. Specifically, a control and calculation module is integrated in the display to process the pressure value transmitted by the pressure sensor 32 and analyze and calculate the roundness of the winding core 10.
[0038] As one of the optional implementations of this embodiment, the core roundness measuring instrument also includes a driving component (not shown), the driving component is connected to the base 1, and the output end of the driving component is connected to the vertical rod 2, and the driving component can drive the vertical rod 2 to rotate.
[0039] The implementation principle of this embodiment is as follows: When it is necessary to measure the inner roundness of the core, the following method is used: Figure 4The structure shown. The core roundness measuring instrument is placed in the cavity of the core 10. The roller 33 of one of the measuring components is stuck when it is locked. Then the two telescopic rods 31 are extended to the same length at the same time. When one of the rollers 33 touches one end of the core, since the wheel 4 is not fixed, the base 1 starts to move until both rollers 33 touch the core. At this time, the stuck roller 33 cannot move, but the roller 33 on the other side can roll. The central vertical rod 2 can provide a slower speed through the driving component. When the maximum diameter of the core is reached, the movable roller 33 cannot roll. Next, the wheel 4 is locked, and then the telescopic rod 31 applies a certain fixed value of force, and the two telescopic rods 31 set at 180° are rotating. The roller 33 can move along the wall of the cylinder due to the force applied perpendicular to the inner wall of the core. The pressure sensor 32 senses the change in the shape of the inner wall of the core, and transmits the changing pressure value to the GPU (control and calculation module) for data processing for calculation and related circular drawing and display, and performs calculations using the design of built-in related programs. And the display 6 displays relevant values, such as the range, roundness and other relevant values.
[0040] When it is necessary to measure the outer roundness of the winding core, use Figure 5 The structure shown. The vertical rod 2 is extended to the top of the core, and then the telescopic rod 31 is connected to the connecting rod 312 to make the roller 33 touch the outer wall of the core. The telescopic rod 31 applies force to the outer wall of the core. The two telescopic rods 31 are moved along the outer wall of the core. The pressure sensor 32 senses the change in the shape of the outer wall of the core, and transmits the changing pressure value to the GPU (control and calculation module) for data processing to calculate and draw and display the relevant circles. The calculation is performed using the design of the built-in relevant program. And the relevant values, such as the extreme difference, true roundness and other relevant values, are displayed on the display 6. By using speed detection, the relevant centripetal speed can be determined by the transmitted inner diameter data and the applied fixing force, and the speed of the roller 33 can be calculated to determine the centripetal movement of the roller 33, thereby preventing the roller 33 from falling off.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A core roundness measuring instrument, characterized in that: include: Base; A vertical pole connected to the base; Two measuring components, the measuring components include a telescopic rod, a pressure sensor, a roller, a spring and a wheel axle, the telescopic rod is connected to the vertical rod, the telescopic end of the telescopic rod is slidably connected to the wheel axle, the end of the wheel axle away from the telescopic rod is rotatably connected to the roller, the end of the telescopic rod is connected to the pressure sensor, one end of the spring is connected to the pressure sensor, and the other end of the spring is connected to the wheel axle, the axis angle of the telescopic rods of the two measuring components is 180 degrees, and the rollers of the two measuring components are arranged opposite to each other.
2. The core roundness measuring instrument according to claim 1, characterized in that: The core roundness measuring instrument also includes a plurality of wheels, which are rotatably connected to the bottom of the base.
3. The core roundness measuring instrument according to claim 2, characterized in that: The wheel is a self-locking universal wheel.
4. The core roundness measuring instrument according to claim 1, characterized in that: The core roundness measuring instrument also includes a fastener. The telescopic rod is provided with a first threaded hole, the vertical rod is provided with a second threaded hole corresponding to the first threaded hole, and the fastener passes through the first threaded hole and is threadedly connected with the second threaded hole.
5. The core roundness measuring instrument according to claim 1, characterized in that: The vertical rod is a telescopic rod.
6. The core roundness measuring instrument according to claim 1, characterized in that: The core roundness measuring instrument further includes a display and a power supply, wherein the power supply is electrically connected to the display, and the display is electrically connected to the pressure sensor.
7. The core roundness measuring instrument according to claim 1, characterized in that: The telescopic rod comprises a rod body and a connecting rod, wherein the connecting rod has a vertical section and a horizontal section which are vertically connected, the vertical section is vertically connected to the telescopic end of the rod body, and the end of the horizontal section is slidably connected to the wheel axle.
8. The winding core roundness measuring instrument according to claim 1, characterized in that: The core roundness measuring instrument further comprises a driving component, wherein the driving component is connected to the base, and an output end of the driving component is connected to the vertical rod, and the driving component can drive the vertical rod to rotate.