A measuring instrument

Abstract

The application discloses a kind of measuring instruments, belong to measurement technical field, the instrument includes base, the left side of base top is equipped with measuring plate, the right side of base top is equipped with operating plate, recess is equipped on measuring plate, adjusting assembly and measuring assembly are equipped on operating plate, adjusting assembly includes handle, handle rotating shaft and sector plate;Measuring assembly includes rotating disc, mandrel, fixed sheet and dial indicator;Spring sheet is equipped above base, a part of spring sheet is in the recess of measuring plate, another part of spring sheet is on operating plate, operating plate right side is equipped with locking screw rod.The measuring instrument disclosed in the application can simply and conveniently measure the size of paper cup mouth diameter, and has high measurement accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of measurement, in particular to a measuring instrument. BACKGROUND

[0002] Paper cup needs to be detected for the diameter of the cup opening when it is manufactured from the factory to ensure that the error of the diameter of the cup opening is within a reasonable range. There are two commonly used measurement schemes on the market, one is to use a vernier caliper to measure, and the other is to use a three-coordinate projector to measure. When using a vernier caliper to measure, the vernier caliper is directly clamped on both sides of the cup opening, and the diameter of the cup opening is read according to the scale value of the vernier caliper. When using a three-coordinate projector to measure, the projector randomly selects multiple points on the cup opening, and the average value of the diameter of the cup opening is automatically calculated by measuring the coordinate values of these points through projection.

[0003] Both of the above schemes have disadvantages in actual use. When using a vernier caliper to measure, the vernier caliper cannot accurately measure the size of the paper cup due to the large elasticity of the diameter of the paper cup opening, and the vernier caliper is prone to unstable clamping, which makes the measurement inconvenient. When using a three-coordinate projector to measure, it takes a long time to measure the diameter of the cup opening of one paper cup, and the measurement process is complex, time-consuming and laborious, which cannot efficiently complete the measurement of the diameter of the cup opening. SUMMARY

[0004] The present application is designed to solve the problems of inconvenient, inaccurate and low efficiency of measuring the diameter of the cup opening in the prior art, and the purpose is to conveniently and quickly complete the measurement operation of the diameter of the cup opening, and to reduce the measurement error caused by the deformation of the cup opening and improve the measurement accuracy. The technical scheme adopted by the present application is as follows: a device for measuring the diameter of the cup opening of a paper cup, comprising a base, a measuring plate is arranged on the left side of the upper portion of the base, an operation plate is arranged on the right side of the upper portion of the base, a groove is arranged on the measuring plate, an adjusting assembly and a measuring assembly are arranged on the operation plate, the adjusting assembly comprises a handle, a handle rotating shaft and a sector plate, one end of the handle is fixedly connected with the handle rotating shaft, the handle rotating shaft is fixedly connected with the sector plate, and the handle rotating shaft is installed on the operation plate; the measuring assembly comprises a locking screw, a rotating disc, a mandrel, a fixed sheet and a dial indicator, the rotating disc is located below the fixed sheet of the dial indicator of the measuring assembly, the mandrel is arranged at the center of the rotating disc, the mandrel and the rotating disc are connected together through a rotating disc nut, and the fixed sheet is provided with a dial indicator above; a spring sheet is arranged on the upper portion of the base, one part of the spring sheet is arranged in the groove, the other part of the spring sheet is arranged on the operation plate, and the operation plate is provided with a locking screw on the right side.

[0005] Preferably, one end of the spring sheet is inserted into the opening gap on the edge of the sector plate, extends along the edge of the sector plate, and extends into the groove on the measuring plate.

[0006] As preferred, the other end of the spring sheet is connected with the outer surface of the mandrel, and is layered around the outer surface of the mandrel, and extends into the groove on the measuring plate.

[0007] As preferred, a small iron sheet is arranged on the outer surface of the mandrel, and a hole is arranged in the inner end of the spring sheet near the port of the mandrel, and the small iron sheet passes through the hole to fix the port of the spring sheet on the outer surface of the mandrel.

[0008] As preferred, the part of the spring sheet in the groove is annular, and a hole is arranged in the spring sheet near the end of the groove close to the sector plate, and the spring sheet near the end of the groove close to the mandrel extends to the mandrel through the hole.

[0009] As preferred, a tension spring is arranged between the sector plate and the operation plate of the adjusting assembly, and one end of the tension spring is fixedly connected with the sector plate by screwing, and the other end is fixedly connected with the operation plate by screwing.

[0010] As preferred, a baffle is arranged on the upper part of the spring sheet at the junction of the measuring plate and the operation plate to limit the spring sheet and prevent it from sliding upward.

[0011] As preferred, the measuring head of the dial gauge is always in contact with the metal sheet on the handle.

[0012] As preferred, one end of the locking screw is connected with a limiting block, and the other side of the limiting block is in contact with the spring sheet around the mandrel.

[0013] As preferred, the measuring instrument further comprises a circular gauge, which has multiple specifications with different diameters, and is placed in the circular ring surrounded by the spring sheet when used.

[0014] The device is used in two steps of calibration and measurement. Firstly, the calibration operation before use: loosen the locking screw on the right side of the operation plate, rotate the rotating disc to loosen the spring sheet, place the circular gauge into the spring sheet, rotate the rotating disc to tighten the spring sheet, clamp the circular gauge, pull the handle to zero position, lock the screw, zero the dial gauge, and take out the circular gauge. In this way, the measuring tool is calibrated.

[0015] Then the measurement operation can be performed: pull the handle, and the spring sheet naturally loosens, and the paper cup is placed into the spring sheet, and then the handle is loosened, and the spring sheet automatically tightens the paper cup, and the value of the dial gauge is read out, and then the value on the circular gauge is added, which is the specific value of the diameter of the paper cup.

[0016] Compared with the prior art, the device has the following beneficial effects: when the cup opening diameter is measured by using the device, a certain batch of paper cup openings with a fixed cup opening size can be measured after simple calibration, the measurement operation is simple and convenient, the measurement speed is fast, and the efficiency is high; and due to the characteristics of the spring sheet, the paper cup opening will not be deformed when the spring sheet clamps the paper cup opening, so that the measurement result is very accurate. The device has the advantages of simplicity, high efficiency and high measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a general structure schematic diagram of an embodiment of the present application.

[0018] Figure 2 is a connection schematic diagram of a spring sheet, a groove and a sector plate in an embodiment of the present application.

[0019] Figure 3 is a top view of an adjusting assembly in an embodiment of the present application.

[0020] Figure 4 is a top view of a measuring assembly in an embodiment of the present application.

[0021] Figure 5 is a schematic diagram of a turntable in an embodiment of the present application.

[0022] Wherein, 1, base; 2, measuring plate; 3, operation plate; 4, round gauge; 5, locking screw; 6, groove; 7, spring sheet; 8, adjusting assembly; 9, measuring assembly; 10, baffle; 51, limiting block; 81, handle; 82, handle rotating shaft; 83, sector plate; 84, metal sheet; 85, tension spring; 91, turntable; 92, mandrel; 93, fixing sheet; 94, dial indicator; 921, small iron sheet; 941, measuring rod; 942, measuring head. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, and the purpose is to help the technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present application, and to help them to implement it. It should be noted that in the following embodiments, "upper", "lower", "left side", "right side", "top" and "bottom" do not represent absolute division relationship in structure and / or function, but only for the convenience of description. The spring sheet in the present application is a steel strip made of spring steel with elasticity, which has the characteristics that it is easy to bend in one direction-the minimum stiffness plane, and has large tensile stiffness and bending stiffness in the other direction.

[0024] As Figure 1As shown, the present application provides a measuring instrument, including a base, a measuring plate is arranged on the left side of the base, an operation plate is arranged on the right side of the base, a recess is arranged on the measuring plate, an adjusting assembly and a measuring assembly are arranged on the operation plate, the adjusting assembly includes a handle, a handle rotating shaft and a sector plate, one end of the handle is fixedly connected with the handle rotating shaft, and the handle rotating shaft is fixedly connected with the sector plate; the measuring assembly includes a locking screw, a rotating disc, a fixed sheet and a dial indicator, the rotating disc is located below the fixed sheet of the dial indicator, a mandrel is arranged at the center of the rotating disc, the mandrel and the rotating disc are connected together through a rotating disc nut, and the fixed sheet is provided with the dial indicator above; a spring sheet is arranged above the base, one part of the spring sheet is in the recess, another part of the spring sheet is on the operation plate, and the operation plate is provided with the locking screw on the right side. The device also includes a plurality of circular gauges of different diameters, which are used for calibration.

[0025] Specifically, as shown, Figure 1 The paper cup to be measured is a cylinder with a large cup opening diameter and a small cup bottom diameter. Due to the material characteristics, the cup opening is prone to bending deformation after being subjected to a certain external force. The left side of the device is provided with a measuring plate, and a larger circular recess is arranged on the measuring plate for placing the spring sheet and the paper cup to be measured. The right side of the device is provided with an adjusting assembly below, which is mainly used for fine adjustment of the diameter of the circular ring formed by the spring sheet in the recess during measurement, so that the spring sheet can tightly surround the paper cup opening when the paper cup to be measured is placed. The right side of the device is provided with a measuring assembly above, which has two main functions: 1. During calibration, the diameter of the circular ring formed by the spring sheet in the recess is adjusted in a larger range, so that the circular gauge of different sizes can be placed, so as to measure the paper cup of different sizes; 2. During measurement, the difference between the diameter of the paper cup to be measured and the diameter of the circular gauge is read by the dial indicator, and then the actual diameter of the paper cup to be measured is indirectly obtained. The right edge of the device is provided with a locking screw, which is mainly used for locking or releasing the spring sheet during calibration, so as to facilitate the subsequent steps.

[0026] As shown, Figure 3As shown, the adjusting assembly includes: handle, handle rotation axis and sector plate, tension spring. In the measurement operation, clockwise dial handle, sector plate will follow the handle together clockwise rotation, sector plate edge on the spring piece will also follow together clockwise movement, so slightly increase the spring piece in the groove around the diameter of the ring, to ensure that the paper cup can be put into the ring. Handle on one end near the measurement assembly is provided with a metal sheet, the metal sheet and the measurement assembly on the dial indicator contact closely, when the rotating lever, dial indicator contact will also move together. Sector plate and the operating plate is provided with a tension spring, when the groove inside the ring is not placed round gage or measured object, the spring piece in the groove will be due to the sector plate tension spring tension, the spring piece will be slightly closed; in the measurement operation, clockwise rotation handle, tension spring relax, with the sector plate clockwise rotation, so as to drive the spring piece relax, spring piece ring diameter becomes larger, until the paper cup mouth can be easily put into the spring piece ring, at this time, release handle, tension spring will automatically restore, drive the sector plate counterclockwise rotation, and then drive the spring piece shrink hoop tightly cup mouth, convenient for measuring cup diameter.

[0027] As shown in Figure 4 , the measurement assembly includes: locking screw, rotating disc, mandrel, fixed sheet and dial indicator. Rotating disc is located below the dial indicator fixed sheet, rotating disc center is provided with a mandrel, the mandrel and rotating disc are connected together through rotating disc nut, the fixed sheet is provided with a dial indicator above. The edge of the rotating disc is provided with a plurality of small grooves, which is convenient for finger dial when calibrating operation, when need to measure small size cup diameter, loosen the locking screw, clockwise dial rotating disc, rotating disc will drive the mandrel together clockwise rotation, and then drive the spring piece at the end of the mandrel to move centripetally with the mandrel as reference, so that the diameter of the spring piece around the ring in the groove on the measuring plate is reduced, which is convenient for putting the small diameter round gage. Correspondingly, when need to measure large size cup diameter, counterclockwise dial rotating disc, rotating disc will drive the mandrel together counterclockwise rotation, and then drive the spring piece at the end of the mandrel to move centrifugally with the mandrel as reference, so that the diameter of the spring piece around the ring in the groove on the measuring plate is increased, which is convenient for putting the large diameter round gage. The fixed sheet and the dial indicator are fixedly connected together by glue, the upper left and lower right of the fixed sheet are provided with nuts, which are used for fixing the fixed sheet on the operating plate. The dial indicator can be electronic or mechanical, the measuring rod of the dial indicator is always in elastic compression state during the handle rotation, because the measuring rod has the tendency to return to the original position, so the measuring head of the dial indicator is always in close elastic contact with the metal sheet on the handle during the handle rotation, which makes the handle rotation drive the dial indicator measuring head to move together.

[0028] As shown in Figure 2As shown in the drawings, one end of the spring sheet is inserted into the open gap on the edge of the sector plate, extends along the edge of the sector plate, and extends into the groove on the measuring plate. A small open gap is provided on the edge of the sector plate, and one end of the spring sheet is inserted into the gap and bent vertically. Since the spring sheet is in the gap between the sector plate and the operation plate, the spring sheet can be fixedly connected with the sector plate without falling off.

[0029] As shown in the drawings, Figure 2 the other end of the spring sheet is connected with the outer surface of the mandrel, wraps around the outer surface of the mandrel layer by layer, and extends into the groove on the measuring plate. As shown in the drawings, Figure 5 a small iron sheet is provided on the outer surface of the mandrel, and a hole is opened in the inside of the end port of the spring sheet close to the mandrel. The small iron sheet passes through the hole to fix the end port of the spring sheet on the outer surface of the mandrel.

[0030] As shown in the drawings, Figure 2 the part of the spring sheet in the groove is wrapped into a ring shape, a hole is opened in the spring sheet close to the sector plate at one end of the groove, and the spring sheet close to the mandrel at one end of the groove passes through the hole to extend to be connected with the mandrel. The hole opened in the spring sheet close to the sector plate at one end of the groove can make the spring sheets at both ends at the same horizontal height, and the spring sheet can tightly hold the paper cup to be measured during measurement. At this time, the circular ring surrounded by the spring sheet in the groove has a diameter equal to the true diameter of the paper cup, which improves the measurement accuracy.

[0031] As shown in the drawings, Figure 2 a baffle is provided on the upper part of the spring sheet at the junction of the measuring plate and the operation plate to block the spring sheet from sliding upward. The baffle is fixed on the operation plate by a nut on one side and presses the spring sheet at the junction of the measuring plate and the operation plate on the other side to prevent it from sliding upward due to deformation.

[0032] As shown in the drawings, Figure 2 a limiting block is connected to one side of the locking screw, and the other side of the limiting block is in contact with the spring sheet at the end of the mandrel. The other end face of the limiting block is in contact with the locking screw, and rotating the locking screw can press the spring sheet inward. When the locking screw is rotated clockwise, the limiting block moves inward and presses the spring sheet on the side of the mandrel so that it cannot move, thereby fixing the size of the circular ring surrounded by the spring sheet in the groove, which is convenient for placing a circular gauge for calibration. When the locking screw is rotated counterclockwise, the limiting block is relaxed, and the mandrel side spring sheet can move, thereby adjusting the size of the circular ring surrounded by the spring sheet in the groove, which is used to adapt to different sizes of circular gauges.

[0033] As shown in the drawings, Figure 1As shown, the measuring instrument further comprises a circular gauge having a plurality of different diameter specifications, which is placed into the circular ring surrounded by the spring pieces in the groove during use. The circular gauge is a plurality of disc-shaped metal products of different diameter specifications, which is used to set the standard value of the cup opening diameter during calibration operation.

[0034] The specific operation of the present application in actual use mainly includes two steps: calibration stage and measurement stage. The specific operation process of the calibration stage is as follows: first, select a batch of paper cups with a fixed cup opening diameter to be measured, select a circular gauge with a suitable diameter for the batch of paper cups, rotate the locking screw counterclockwise, loosen the limiting block in contact with the locking screw, and then loosen the spring pieces on the side of the mandrel, move the spring pieces on the side of the mandrel by turning the dial, indirectly adjust the diameter of the circular ring surrounded by the spring pieces in the groove to be slightly larger than the diameter of the circular gauge, place the circular gauge into the circular ring surrounded by the spring pieces in the groove, at this time the spring pieces in the groove will automatically contract and tightly clamp the circular gauge due to the tension of the tension spring, and then rotate the locking screw clockwise to press the limiting block and the spring pieces, so that the spring pieces cannot move and the dial is returned to zero, and the calibration stage is completed. The specific process of the measurement stage is as follows: after calibration is completed, remove the circular gauge, rotate the handle of the adjusting assembly clockwise, rotate the sector plate clockwise and move the spring pieces on the side of the sector plate towards the groove, increase the diameter of the circular ring surrounded by the spring pieces in the groove, place the paper cup to be measured into the circular ring, loosen the handle, the spring pieces will rotate counterclockwise under the action of the tension spring on the sector plate and tightly clamp the paper cup to be measured, at the same time the rotation of the handle will drive the dial probe connected with the metal piece on the handle to move, and the movement of the dial probe will drive the dial rod to move radially; taking the position of the dial probe after calibration as the starting point and the position of the dial probe when the spring pieces tightly clamp the paper cup to be measured as the ending point, the distance between the starting point and the ending point of the dial probe is the difference between the measured paper cup and the circular gauge, when the difference is a positive value, the size of the circular gauge plus the sum of the positive value is the diameter size of the measured paper cup; when the reading is a negative value, the size of the circular gauge minus the negative value is the diameter size of the measured paper cup.

[0035] According to the formula diameter = circumference / π, the measured diameter variable = circumference variable / π, the difference between the diameter of the measured paper cup after the spring pieces are tightened and the circular gauge is the circumference variable, and when the dial is converted to a diameter variable reading, the value of π needs to be converted through a designed mechanism. The conversion method of the present instrument is: the radius from the fixed spring piece of the sector plate to the center of the handle is π times, i.e. 3.141596 times, the radius from the dial probe to the center of the handle, to directly convert and realize, therefore the distance of the movement of the measuring rod is the difference between the diameter of the cup opening of the measured paper cup and the diameter of the circular gauge, and the distance of the movement of the measuring rod will be displayed on the dial, therefore the actual diameter of the cup opening of the measured paper cup is the diameter of the circular gauge plus the reading displayed on the dial.

[0036] The embodiment takes the paper cup as the measuring object, but the instrument is not limited to the measurement of the paper cup in the actual use process, and any vessel with a circular or oval opening can be measured by using the instrument, the measuring operation is simple and convenient, the instrument has low cost and high measuring precision, and the instrument has good measuring effect on the vessel with the opening prone to deformation.

[0037] The application is described above with reference to the drawings. Obviously, the specific implementation of the application is not limited to the above manner. As long as various non-essential improvements are made by using the method concept and technical solution of the application, or the above concept and technical solution of the application is directly applied to other occasions without improvement, they are all within the protection scope of the application.

Claims

1. A measuring instrument, characterized in that The utility model provides a kind of measuring instrument, including base, the left side of the base is equipped with measuring plate, the right side of the base is equipped with operating plate, the measuring plate is equipped with recess, the operating plate is equipped with adjusting assembly and measuring assembly, the adjusting assembly includes handle, handle rotating shaft and sector plate, one end of the handle is connected with handle rotating shaft, the handle rotating shaft is fixed on sector plate;The measuring assembly includes turntable, mandrel, fixed sheet and dial indicator, the turntable is below fixed sheet, mandrel is equipped in the center of turntable, the mandrel and turntable are connected together by turntable nut, the fixed sheet is equipped with dial indicator above, the dial indicator is contacted with handle by sheet metal;The upper side of the base is equipped with spring sheet, one end of the spring sheet is inserted into the opening gap of the edge of sector plate, and extends to the back groove on measuring plate along the edge of sector plate, the other end is connected with the outer surface of mandrel and extends to the recess on measuring plate along the outer surface of mandrel, and the right side of the operating plate is equipped with locking screw.

2. The measuring instrument of claim 1, wherein the spring sheet is inserted into the opening gap on the edge of the sector plate, extends along the edge of the sector plate, and extends into the recess on the measuring plate.

3. The measuring instrument of claim 2, wherein the other end of the spring sheet is connected with the outer surface of the mandrel and extends along the outer surface of the mandrel, layer by layer, and extends into the recess on the measuring plate.

4. The measuring instrument of claim 3, wherein a small iron sheet is provided on the outer surface of the mandrel, and a hole is formed in the inside of the spring sheet at the end port near the mandrel, and the small iron sheet passes through the hole to fix the end port of the spring sheet on the outer surface of the mandrel.

5. The measuring instrument of claim 2, wherein the part of the spring sheet in the recess is bent into a ring shape, a hole is formed in the spring sheet at one end of the recess near the sector plate, and the spring sheet at the other end of the recess near the mandrel extends to be connected with the mandrel by passing through the hole.

6. The measuring instrument of claim 2 or 3, wherein a baffle is provided on the upper part of the spring sheet at the junction of the measuring plate and the operating plate to limit the spring sheet and prevent it from sliding upward.

7. The measuring instrument of claim 1, wherein a tension spring is provided between the sector plate of the adjusting assembly and the operating plate, one end of the tension spring is fixedly connected with the sector plate screw, and the other end is fixedly connected with the operating plate screw.

8. The measuring instrument of claim 1 or 7, wherein a sheet metal is provided on one side of the handle, and the measuring head of the dial indicator is always in contact with the sheet metal on the handle.

9. The measuring instrument of claim 1, wherein a limit block is connected to one end of the locking screw, and the other side of the limit block is in contact with the spring sheet around the mandrel.

10. The measuring instrument of claim 1, further comprising a circular gauge, which has multiple specifications of different diameters, and is placed in the circular ring surrounded by the spring sheet in the recess when used.

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