Cup cover inner diameter measuring instrument
By designing a dual monitoring system using a digital micrometer and a pressure gauge suitable for measuring the inner diameter of cup lids, the problems of large measurement errors and poor adaptability in existing technologies have been solved, achieving high precision and wide applicability in measuring the inner diameter of cup lids.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG NEW DEBAO MACHINERY
- Filing Date
- 2026-03-17
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies for measuring the inner diameter of cup lids suffer from problems such as large data errors, poor adaptability, and difficulty in equipment adjustment. In particular, traditional measuring instruments cannot guarantee measurement accuracy and applicability.
A cup lid inner diameter measuring instrument was designed, which adopts dual monitoring with a digital micrometer and a pressure gauge. Through adjustable elastic elements and clamping structure, the measurement accuracy and adaptability are ensured, and it is suitable for cup lids of different specifications and materials.
It achieves high accuracy and wide applicability in measuring the inner diameter of cup lids, reduces measurement errors, and improves operational efficiency and equipment stability.
Smart Images
Figure CN122149290A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to improvements in the field of measurement technology, and more particularly to an improved invention of a cup lid inner diameter measuring instrument. Background Technology
[0002] In the cup lid manufacturing industry, the inner diameter of the lid is a core parameter affecting the fit between the lid and the cup body. An inner diameter that is too large can easily lead to the lid falling off and the seal failing; an inner diameter that is too small can cause the lid to be difficult to fasten, or even deform the lid or cup body if forced to fasten. Therefore, accurate measurement of the inner diameter of the lid is crucial. Currently, the measurement methods used in the industry have many drawbacks: Defects of conventional measuring tools: When using vernier calipers or ordinary micrometers, the measuring tool probe makes point or line contact with the inner wall of the cup lid. The plastic cup lid is prone to local deformation due to the pressure of the probe, resulting in distorted measurement data. In addition, it is difficult to ensure that the measuring position is always in the exact center of the inner diameter of the cup lid when the measuring tool is held manually. Different measuring angles will produce large errors and poor data consistency. Limitations of traditional dedicated measuring instruments: Some early dedicated measuring instruments had simple structural designs, relying on only a single displacement measuring component. They could not control the opening force during measurement. When the opening force was too large, it would cause permanent deformation of the cup lid. When the opening force was too small, it could not ensure that the measuring component was completely in contact with the inner wall of the cup lid, and thus could not obtain accurate data. At the same time, most of these measuring instruments had poor adaptability. One model could only measure a single size of cup lid. When changing the measurement size, the equipment was difficult to adjust and the adaptation cost was high. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a cup lid inner diameter measuring instrument.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The cup lid inner diameter measuring instrument includes a base plate, characterized in that: the base plate is provided with a front seat and a rear seat arranged opposite to each other, the front seat is movable back and forth, the rear seat is fixed, the front seat and the rear seat are respectively provided with the left half and the right half of the cup lid sleeve, and the cup lid sleeve is equipped with a collar, an elastic element is provided between the front seat and the rear seat to keep them apart, and the pressure of the elastic element is adjustable, the front seat is equipped with a digital micrometer for measuring the displacement of the front seat, a pressure gauge for measuring the elastic opening force of the front seat, and a clamp for driving the front seat to fit against the rear seat.
[0005] The pressure gauge is adjustable and can be moved back and forth on the base plate, and the sensing end of the pressure gauge is in contact with the front seat.
[0006] The pressure gauge is mounted on the slider, and a guide rail is provided on the corresponding base plate. The slider is movable on the guide rail, and a screw adjustment structure is provided between the pressure gauge and the base plate.
[0007] The digital micrometer is fixed to the base plate. A connecting rod is provided on the front seat. The connecting rod is movably inserted into the rear seat. A chain seat block is provided at the outer end of the connecting rod. A screw is provided on the chain seat block. The screw is in contact with the measuring rod of the digital micrometer.
[0008] The elastic element is a spring, which is compressed between the front seat and the rear seat. The front seat is provided with a spring positioning hole, and the rear seat is provided with a spring pressure adjustment hole. The spring pressure adjustment hole is internally threaded with a spring seat, and one end of the spring abuts against the spring seat.
[0009] The base plate is also provided with a top shaft locking block, and two guide shafts are provided between the top shaft locking block and the rear seat. The front seat is movably mounted on the guide shafts via a linear bearing.
[0010] The push rod of the clamp passes through the top shaft locking block and contacts the front seat.
[0011] A buffer pad is fitted on the guide shaft near the top shaft locking block.
[0012] The left and right halves of the cup lid sleeve are detachable and replaceable on the front and rear seats, respectively.
[0013] The beneficial effects of this invention are as follows: The improved cup lid inner diameter measuring instrument offers high measurement accuracy: It is equipped with both a digital micrometer and a pressure gauge. The digital micrometer accurately measures the displacement of the front seat with an error controlled within the micrometer level; the pressure gauge monitors the opening force in real time, preventing excessive pressure from causing cup lid deformation, thus providing double assurance for the accuracy of the measurement data. It also boasts strong adaptability: The left and right halves of the cup lid sleeve are detachable and replaceable, allowing for the replacement of sleeves of corresponding sizes according to different cup lid specifications. Adjusting the spring seat also allows for adaptation to cup lids of different materials and rigidities, making it widely applicable. Operation is convenient and efficient: The clamp allows for quick opening and closing of the front seat, facilitating the placement and removal of cup lids. The readings from the pressure gauge and digital micrometer are intuitive, providing the cup lid inner diameter without complex calculations, significantly improving measurement efficiency and making it suitable for batch testing scenarios. Furthermore, it exhibits good structural stability: The front seat slides on the guide shaft via a linear bearing, ensuring precise and unbiased movement. The design of the spring positioning hole and spring pressure adjustment hole ensures uniform spring force, maintaining a stable opening force even after long-term use, resulting in a long equipment lifespan. Attached Figure Description
[0014] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0015] Figure 1 This is a schematic diagram of the structure of the present invention.
[0016] Figure 2 This is a top view of the structure of the present invention.
[0017] Figure 3 This is an exploded view of the structure of the present invention. Detailed Implementation
[0018] The accompanying drawings illustrate the structure of the present invention, and further details will be described below in conjunction with the drawings. In this embodiment, see the attached drawings. Figure 1-3 The cup lid inner diameter measuring instrument includes a base plate 1, on which a front seat 2 and a rear seat 3 are arranged opposite to each other. The front seat 2 can be moved back and forth, while the rear seat 3 is fixed. The front seat 2 and the rear seat 3 are respectively provided with the left and right halves of the cup lid sleeve 4. When the front seat 2 and the rear seat 3 are in contact, the left and right halves of the cup lid sleeve 4 form a complete circle. The cup lid sleeve 4 is equipped with a collar 5. The inner diameter of the collar 5 is a standard value. The inner diameter of the collar 5 is larger than the outer diameter of the cup lid sleeve 4 and smaller than the inner diameter of the cup lid to be tested. An elastic element 6 is provided between the front seat 2 and the rear seat 3 to keep them apart. The pressure of the elastic element 6 is adjustable. The front seat 2 is equipped with a digital micrometer 7 to measure the displacement of the front seat 2, a pressure gauge 8 to measure the elastic opening force of the front seat 2, and a clamp 9 to drive the front seat 2 to contact the rear seat 3. The clamp 9 is a push-pull type clamp.
[0019] As a further improved embodiment, the pressure gauge 8 is adjustable and movable on the base plate 1, and the sensing end of the pressure gauge 8 is in contact with the front seat 2. Preferably, the pressure gauge 8 is mounted on the slider 10, and the corresponding base plate 1 is provided with a guide rail 11. The slider 10 is movable on the guide rail 11, and a screw adjustment structure 12 is provided between the pressure gauge 8 and the base plate 1. Specifically, a pressure gauge seat 13 is provided below the pressure gauge 8, and the screw is screwed to the connecting block 14 at the lower end of the pressure gauge seat 13. The front end of the screw can be rotatably limited on the limiting block 15, which is fixed to the front end of the base plate 1. The rear end of the screw is provided with a knurled step knob 16, and rotating the knurled step knob 16 can drive the pressure gauge 8 to move back and forth.
[0020] As a further improved specific implementation, the digital micrometer 7 is fixed on the base plate 1, the front seat 2 is provided with a connecting rod 17, the connecting rod 17 is movably inserted into the rear seat 3, the corresponding rear seat 3 is provided with a linear bearing, the outer end of the connecting rod 17 is provided with a chain seat block 18, the chain seat block 18 is provided with a screw (not shown in the figure), the screw is in contact with the measuring rod of the digital micrometer 7, and the position of the screw on the chain seat block 18 is adjustable.
[0021] As a further improved specific implementation, the elastic element 6 is a spring, which is compressed between the front seat 2 and the rear seat 3. The corresponding front seat 2 is provided with a spring positioning hole, and the corresponding rear seat 3 is provided with a spring pressure adjustment hole. The spring pressure adjustment hole is internally threaded with a spring seat 19, one end of the spring abuts against the spring seat 19, and the outer end of the spring seat 19 is provided with a screwing structure.
[0022] As a further improvement, the base plate 1 is also provided with a top shaft locking block 20, and two guide shafts 21 are provided between the top shaft locking block 20 and the rear seat 3. The front seat 2 is movably mounted on the guide shafts 21 through a linear bearing 22 to ensure that the movement trajectory of the front seat 2 is accurate and without deviation.
[0023] As a further improved embodiment, the push rod of the clamp 9 passes through the top shaft locking block 20 and contacts the front seat 2.
[0024] As a further improved specific implementation, a buffer pad 23 is sleeved on the guide shaft 21 near the top shaft locking block 20. The buffer pad 23 can prevent the front seat 2 from rigidly colliding with the top shaft locking block 20 when it is reset.
[0025] As a further improved specific implementation, the left and right halves of the cup lid sleeve 4 are detachable and replaceable on the front seat 2 and the rear seat 3, respectively. The sleeves of the corresponding size can be replaced according to different cup lid specifications. By adjusting the spring seat 19, it can also be adapted to cup lids of different materials and different rigidities, with a wide range of applications.
[0026] The working principle of this invention, Basic positioning and spreading drive: Taking the rear seat 3 fixed on the base plate 1 as the reference, the front seat 2 is mounted on the guide shaft 21 through a linear bearing to achieve back and forth sliding; the compression spring between the front seat 2 and the rear seat 3 provides the spreading force for both. By rotating the spring seat 19 in the spring pressure adjustment hole of the rear seat 3, the compression of the spring can be changed, thereby precisely adjusting the size of the spreading force.
[0027] Pressure monitoring mechanism: The pressure gauge 8 is mounted on the guide rail 11 of the base plate 1 via the slider 10. The front and rear positions of the pressure gauge 8 can be adjusted by the lead screw adjustment structure 12 so that its sensing end is in stable contact with the front seat 2. When the front seat 2 is opened by the spring or pulled by the clamp 9, the pressure gauge 8 can monitor the force on the front seat 2 in real time to ensure that the opening force during measurement is within a reasonable range and to avoid deformation of the cup lid.
[0028] Displacement measurement and inner diameter calculation: The digital micrometer 7 is fixed on the base plate 1. The connecting rod 17 on the front seat 2 passes through the rear seat 3. The screw on the chain block 18 at the outer end contacts the measuring rod of the micrometer. When the clamp 9 pulls the front seat 2 to fit against the rear seat 3, the cup lid is put on the cup lid sleeve 4. After the clamp 9 is released, the spring pushes the front seat 2 to open. The left and right halves of the cup lid sleeve 4 fit against the inner wall of the cup lid. At this time, the displacement of the front seat 2 is transmitted to the micrometer through the connecting rod 17. The actual inner diameter of the cup lid can be obtained by adding the reading of the micrometer to the inner diameter of the collar 5.
[0029] Clamp reset function: The push rod of clamp 9 passes through the top shaft locking block 20 and contacts the front seat 2. Pushing the push rod can make the front seat 2 overcome the spring force and fit against the rear seat 3, which is convenient for taking off and putting on the cup lid. The buffer pad on the guide shaft 21 can prevent the front seat 2 from having a rigid collision with the top shaft locking block 20 when it resets.
[0030] The operation steps of this invention are as follows: 1. Check the dial indicator: Push and pull clamp 9. When pushing clamp 9 forward, observe whether the dial indicator reading changes. If it increases, the dial indicator needs to be adjusted.
[0031] 2. Predict the inner diameter of the cup lid: With the test lid relative to the sample cup, find the cup lid sleeve 4 of the corresponding size, use an Allen wrench to remove the upper cup lid sleeve 4, and install the corresponding size, note the error of ±1mm.
[0032] III. Measurement: 1. Push the clamp 9 forward to close the front seat 2, adjust the pressure gauge 8 to TRACK mode, and adjust the knurled step knob 16 clockwise so that the sensing end of the pressure gauge 8 contacts the front seat 2 (at this time, the pointer on the pressure gauge 8 should be zero); 2. Put the corresponding collar 5 on the cup lid sleeve 4, pull the clamp 9 open, at this time the left half and right half of the cup lid sleeve 4 are separated and locked by the collar 5, adjust the spring seat 19 of the rear seat 3 and observe the reading of the pressure gauge 8 pointer, and tighten the spring seat 19 when it is adjusted to the support force corresponding to the cup lid to be tested; (if the collar 5 can be easily removed, the spring seat 19 needs to be tightened counterclockwise to increase the support force); 3. After putting on ring 5 and pulling out clamp 9, press the zeroing button on digital dial indicator 7 twice in succession; 4: Slightly push the clamp 9 forward halfway and remove the ring 5. Place the desired cup lid in the center of the cup lid sleeve 4, and slowly open the clamp 9. The value of the digital micrometer 7 plus the inner diameter of the ring 5 is the inner diameter of the cup lid being measured.
[0033] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A cup lid inner diameter measuring instrument, comprising a base plate, characterized in that: The base plate is provided with a front seat and a rear seat arranged opposite to each other. The front seat can be moved back and forth, while the rear seat is fixed. The front seat and the rear seat are respectively provided with the left half and the right half of the cup lid sleeve, and the cup lid sleeve is equipped with a collar. An elastic element is provided between the front seat and the rear seat to keep them apart, and the pressure of the elastic element can be adjusted. The front seat is equipped with a digital micrometer for measuring the displacement of the front seat, a pressure gauge for measuring the elastic opening force of the front seat, and a clamp for driving the front seat to fit against the rear seat.
2. The cup lid inner diameter measuring instrument as described in claim 1, characterized in that: The pressure gauge is adjustable and can be moved back and forth on the base plate, and the sensing end of the pressure gauge is in contact with the front seat.
3. The cup lid inner diameter measuring instrument as described in claim 2, characterized in that: The pressure gauge is mounted on the slider, and a guide rail is provided on the corresponding base plate. The slider is movable on the guide rail, and a screw adjustment structure is provided between the pressure gauge and the base plate.
4. The cup lid inner diameter measuring instrument as described in claim 1, characterized in that: The digital micrometer is fixed to the base plate. A connecting rod is provided on the front seat. The connecting rod is movably inserted into the rear seat. A chain seat block is provided at the outer end of the connecting rod. A screw is provided on the chain seat block. The screw is in contact with the measuring rod of the digital micrometer.
5. The cup lid inner diameter measuring instrument as described in claim 1, characterized in that: The elastic element is a spring, which is compressed between the front seat and the rear seat. The front seat is provided with a spring positioning hole, and the rear seat is provided with a spring pressure adjustment hole. The spring pressure adjustment hole is internally threaded with a spring seat, and one end of the spring abuts against the spring seat.
6. The cup lid inner diameter measuring instrument as described in claim 1, characterized in that: The base plate is also provided with a top shaft locking block, and two guide shafts are provided between the top shaft locking block and the rear seat. The front seat is movably mounted on the guide shafts via a linear bearing.
7. The cup lid inner diameter measuring instrument as described in claim 6, characterized in that: The push rod of the clamp passes through the top shaft locking block and contacts the front seat.
8. The cup lid inner diameter measuring instrument as described in claim 6, characterized in that: A buffer pad is fitted on the guide shaft near the top shaft locking block.
9. The cup lid inner diameter measuring instrument as described in claim 1, characterized in that: The left and right halves of the cup lid sleeve are detachable and replaceable on the front and rear seats, respectively.