CN220568631U - Indentation stiffness measuring device for packaging material - Google Patents
Indentation stiffness measuring device for packaging material Download PDFInfo
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- CN220568631U CN220568631U CN202322183338.2U CN202322183338U CN220568631U CN 220568631 U CN220568631 U CN 220568631U CN 202322183338 U CN202322183338 U CN 202322183338U CN 220568631 U CN220568631 U CN 220568631U
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- side plate
- indentation
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- holder
- clamp
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- 238000007373 indentation Methods 0.000 title claims abstract description 56
- 239000005022 packaging material Substances 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000000123 paper Substances 0.000 description 10
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000011087 paperboard Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses a device for measuring indentation stiffness of packaging materials, which comprises an L-shaped bracket, a force transducer and a clamp holder; the L-shaped bracket comprises a first side plate parallel to the ground and a second side plate perpendicular to the ground, the force transducer is vertically fixed on the second side plate, the force transducer is provided with an edge parallel to the second side plate, and the edge is a measuring line of the force transducer; the clamp holder is rotatably arranged on the first side plate; in the initial state, the measuring line is perpendicular to the plane of the standard sample clamped on the clamp holder, and the standard sample and the measuring line are in contact with each other but have no interaction force; when the standard sample is bent along the indentation on the standard sample under the rotation action of the clamp, the indentation stiffness force of the standard sample is the pressure directly applied on the measuring line. According to the method, the measured standard sample is in direct contact with the measuring line of the force transducer to realize direct measurement of indentation stiffness force, so that energy loss is avoided, and measurement accuracy of the indentation stiffness force is improved.
Description
Technical Field
The application relates to the technical field of detection, and more particularly relates to an indentation stiffness measuring device for packaging materials.
Background
The hard box cigarette package is produced by die cutting and indentation on the printed paperboard or plate paper, so that the hard box cigarette package has the capability of repeated folding. The paper board is provided with the indentation, so that the deformation or fracture effect of the paper board can be accurately and effectively controlled, the paper board can have the same performance as a hinge, and the cigarette label can be manufactured into a paper box capable of storing cigarettes on a packaging machine according to the design requirement. Therefore, besides ensuring the die cutting dimensional accuracy, the quality and performance of the indentation ultimately determine the forming effect of the cigarette package and the production capacity of the packaging machine, and the indentation with good quality is smooth in package and flat and full in appearance after the cigarette case is formed when the indentation is used on a high-speed packaging machine. The data on indentation stiffness is therefore technically important for the forming properties of the carton.
In the prior art, the indentation stiffness measurement method comprises the following steps: cutting paper with a certain size on the small box packaging paper, applying pressure to the paper to bend the sample by 90 degrees, and recording the force value of the paper sample when the sample is bent after (15+/-0.2) seconds. In the existing indentation stiffness measuring device, after the paper is bent, the restoring force of the paper is transmitted to a rotating shaft for driving the paper to bend, and the indentation stiffness force is determined by measuring the reverse torque of the rotating shaft. In such a scheme, the restoring force of the paper cannot be completely transmitted to the rotating shaft, and certain energy loss exists, so that the measurement accuracy of the indentation stiffness force is low.
Disclosure of Invention
The utility model provides a packing material's indentation stiffness measuring device realizes the direct measurement of indentation stiffness through the direct contact of the measurement line of measured standard sample and force transducer, avoids energy loss, has improved the measurement accuracy of indentation stiffness.
The application provides an indentation stiffness measuring device of a packaging material, which comprises an L-shaped bracket, a force transducer and a clamp holder;
the L-shaped bracket comprises a first side plate parallel to the ground and a second side plate perpendicular to the ground, the force transducer is vertically fixed on the second side plate, the force transducer is provided with an edge parallel to the second side plate, and the edge is a measuring line of the force transducer;
the clamp holder is rotatably arranged on the first side plate;
in the initial state, the measuring line is perpendicular to the plane of the standard sample clamped on the clamp holder, and the standard sample and the measuring line are in contact with each other but have no interaction force; when the standard sample is bent along the indentation on the standard sample under the rotation action of the clamp, the indentation stiffness force of the standard sample is the pressure directly applied on the measuring line.
Preferably, a contact rod is arranged on the rotating shaft of the clamp holder, a contact switch for rotating the clamp holder in place is arranged on the first side plate, and the position of the contact switch is the same as that of the contact rod when the clamp holder is positioned at the bending position;
the contact switch is in signal connection with an actuating mechanism of the force transducer.
Preferably, the top surface of the first side plate is fixedly provided with a mounting platform, the bottom of the clamp holder is fixedly provided with a rotary table, and the rotary table is rotatably arranged on the top surface of the mounting platform.
Preferably, a first limiting rod and a second limiting rod are arranged on the outer side of the rotary table on the top surface of the mounting platform;
a third limiting rod is fixed on the rotary table and is positioned between the first limiting rod and the second limiting rod.
Preferably, the rotary shaft of the clamp passes through the first side plate, and the lower end of the rotary shaft protrudes out of the bottom surface of the first side plate and is fixed with a contact rod; the contact switch is fixed on the bottom surface of the first side plate.
Preferably, the holder includes a first clamping plate and a second clamping plate arranged at intervals, the first clamping plate is fixed on the top surface of the rotary table, and the second clamping plate is slidably arranged on the top surface of the rotary table.
Preferably, the clamp holder is provided with a clamp switch, and a transmission piece is arranged between the clamp switch and the second clamping plate.
Preferably, the transmission member is a worm and gear mechanism.
Preferably, the distance between the cut edge and the indentation of the standard sample and the length of the standard sample are preset.
Preferably, the indentation stiffness measuring device further comprises a special weight, and a positioning groove is formed in the bottom of the weight;
when the weight is used for calibrating the force transducer, the measuring line of the force transducer is parallel to the ground, and the weight is positioned on the measuring line through the positioning groove.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic perspective view of a first view angle of a measuring device provided in the present application;
fig. 2 is a schematic perspective view of a second view angle of the measuring device provided in the present application;
fig. 3 is a schematic perspective view of a third view angle of the measuring device provided in the present application;
fig. 4 is a schematic perspective view of a fourth view angle of the measuring device provided in the present application;
fig. 5 is a schematic structural diagram of a standard sample provided in the present application.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
The utility model provides a packing material's indentation stiffness measuring device realizes the direct measurement of indentation stiffness through the direct contact of the measurement line of measured standard sample and force transducer, avoids energy loss, has improved the measurement accuracy of indentation stiffness.
As shown in fig. 1, the measuring device comprises an L-shaped bracket 11, a load cell 1 and a holder 2. The L-shaped bracket 11 comprises a first side plate 111 parallel to the ground and a second side plate 112 perpendicular to the ground, the load cell 1 is vertically fixed on the second side plate 112, and the load cell 1 is provided with an edge parallel to the second side plate 112, and the edge is used as a measuring line of the load cell 1. The clamper 2 is rotatably provided on the first side plate 111.
Preferably, the first side plate 111 is provided with an angle limiting mechanism, the clamp holder 2 is provided with a limiting rod matched with the angle limiting mechanism, and the rotation angle of the clamp holder 2 is limited by the angle limiting mechanism.
Specifically, as an example, as shown in fig. 2, a mounting platform 10 is fixed on the top surface of the first side plate 111, and a rotary table 4 is fixed to the bottom of the clamper 2, the rotary table 4 being rotatably provided on the top surface of the mounting platform 10. On the top surface of the mounting platform 10, a first stop lever 5-1 (corresponding to an initial position, i.e., a state in which the packaging material is not bent) and a second stop lever 5-2 (corresponding to a bent position, i.e., a state in which the packaging material is bent by 90 °) are provided on the outer side of the rotary table 4. A third limiting rod 6 is fixed on the rotary table 4, and the third limiting rod 6 is positioned between the first limiting rod 5-1 and the second limiting rod 5-2.
As an example, the maximum rotation angle of the clamper 2 with respect to the first side plate 111 is 90 °. That is, the third stopper rod 6 rotates 90 ° with the rotation table 4 as the rotation table 4 rotates from the first stopper rod 5-1 to the second stopper rod 5-2.
It will be appreciated that the maximum rotation angle of the holder 2 with respect to the first side plate 111 may be set according to actual requirements, for example 15 deg., thereby determining the angle between the first 5-1 and second 5-2 stop bars.
As shown in fig. 1, the clamper 2 includes a first clamping plate 21 and a second clamping plate 22 arranged at intervals, the first clamping plate 21 being fixed on the top surface of the turntable 4, the second clamping plate 22 being slidably arranged on the top surface of the turntable 4. The clamp 2 is provided with a clamp switch 3, and a transmission member (for example, a worm and gear mechanism) is arranged between the clamp switch 3 and the second clamping plate 22. The gripper switch 3 moves the second gripper plate 22 relative to the first gripper plate 21 via the transmission element, so that the packaging material is gripped on the gripper 2 or removed.
In the indentation stiffness measurement, the packaging material is cut into a standard sample by a standard sampler, and the standard sample is clamped on the holder 2 to perform the indentation stiffness measurement. Wherein the length L of the standard sample and the distance W of the cutting edge C to the indentation P are fixed and the width D of the standard sample is variable, as shown in fig. 5. As one example, w=25 mm, l=38 mm.
The gripper 2 enlarges and reduces the gripping space by the gripping switch 3, thereby gripping the standard sample of the packaging material onto the gripper 2. The cutting edge C of the standard sample is firstly inserted into the clamping opening of the clamp holder 2, and in the clamping state, a preset distance (3 mm) is reserved between the indentation P and the outer edge of the clamp holder 2, and the measuring line of the force transducer 1 is positioned between the indentation P and the opposite side E of the cutting edge C.
In the initial state, the measuring line and the standard sample are in contact with each other but have no interaction force. When the standard sample is bent along the indentation under the rotation action of the clamp holder 2, the direction of the indentation stiffness of the standard sample is perpendicular to the measuring line of the force sensor, namely the indentation stiffness is directly applied to the measuring line, so that the force sensor can detect the indentation stiffness.
As an example, the load cell 1 is always in operation during bending of the standard sample along the indentation under the rotation of the holder 2, so as to continuously collect indentation stiffness force, and then further data analysis can be performed by using the continuous indentation stiffness force.
As another example, when the standard is bent to a preset angle (e.g., 90 °) along the indentation by the rotation of the holder 2, the load cell 1 starts to collect the indentation stiffness force in response to receiving the in-place signal.
Specifically, a contact lever is provided on the rotation shaft of the holder 2, and a contact switch 8 for rotating the holder 2 in place is further provided on the first side plate 111, and the position of the contact switch 8 is the same as the position of the contact lever when the holder 2 is located at the bending position. The contact switch 8 is in signal connection with the actuator of the load cell 1. When the clamp holder 2 rotates in place, the contact rod touches the contact switch 8, the contact switch 8 sends a signal to the force transducer 1 in place, and the force transducer 1 starts measuring.
As an example, as shown in fig. 3, the rotation shaft of the rotation stage passes through the first side plate 111, and the lower end of the rotation shaft protrudes from the bottom surface of the first side plate 111 and is fixed with the contact lever 7. The contact switch 8 is fixed to the bottom surface of the first side plate 111. The position of the contact switch 8 is the same as the position of the contact lever 7 when the clamper 2 and the turntable 4 are in the bending position. When the clamper 2 and the rotary table 4 are positioned at the bending position, the contact rod 7 is contacted with the contact switch 8, and the contact switch 8 generates an in-place signal.
Preferably, the load cell needs to be calibrated before the measurement device is used. As shown in fig. 4, when calibrating, the measuring device is turned over, so that the second side plate 112 is placed on the ground, the force sensor is vertical to the ground, the second side plate 112 is provided with a horizontal bubble, the horizontal state of the force sensor can be adjusted, that is, the measuring line is parallel to the ground, the force sensor is vertically stressed downwards, and then the force sensor is calibrated by utilizing the gravity of the special weight 9. Specifically, the weight 9 has a mass of 10±0.001g, and a positioning groove is provided at the bottom thereof, so that the weight 9 can be positioned on the measuring line of the load cell through the positioning groove.
Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (10)
1. The indentation stiffness measuring device for the packaging material is characterized by comprising an L-shaped bracket, a force transducer and a clamp holder;
the L-shaped bracket comprises a first side plate parallel to the ground and a second side plate perpendicular to the ground, the force transducer is vertically fixed on the second side plate, the force transducer is provided with an edge parallel to the second side plate, and the edge is a measuring line of the force transducer;
the clamp holder is rotatably arranged on the first side plate;
in an initial state, the measuring line is perpendicular to a plane where a standard sample clamped on the clamp is located, and the standard sample and the measuring line are in contact with each other but have no interaction force; when the standard sample is bent along the indentation on the standard sample under the rotation action of the clamp holder, the indentation stiffness force of the standard sample is the pressure directly applied on the measuring line.
2. The indentation stiffness measurement device for packaging materials as in claim 1, wherein a contact lever is provided on the rotation shaft of the holder, a contact switch for rotating the holder in place is provided on the first side plate, and the position of the contact switch is the same as the position of the contact lever when the holder is in the bending position;
the contact switch is in signal connection with an actuating mechanism of the force transducer.
3. The indentation stiffness measurement device for packaging materials as recited in claim 1, wherein a mounting platform is fixed on the top surface of the first side plate, a rotary table is fixed at the bottom of the holder, and the rotary table is rotatably provided on the top surface of the mounting platform.
4. The indentation stiffness measurement device for packaging materials according to claim 3, wherein a first limit rod and a second limit rod are arranged on the outer side of the rotary table on the top surface of the mounting platform;
and a third limiting rod is fixed on the rotary table and is positioned between the first limiting rod and the second limiting rod.
5. The indentation stiffness measurement device for a packaging material as recited in claim 2, wherein a rotation shaft of the holder passes through the first side plate, and a lower end of the rotation shaft protrudes from a bottom surface of the first side plate and is fixed with the contact lever; the contact switch is fixed on the bottom surface of the first side plate.
6. A device for measuring the indentation stiffness of a packaging material as claimed in claim 3, characterized in that the holder comprises a first clamping plate and a second clamping plate arranged at intervals, the first clamping plate being fixed on the top surface of the rotary table, the second clamping plate being slidingly arranged on the top surface of the rotary table.
7. The device for measuring the indentation stiffness of a packaging material as recited in claim 6, wherein a clamp switch is provided on the clamp, and a transmission member is provided between the clamp switch and the second clamp plate.
8. The apparatus for measuring the indentation stiffness of a packaging material as recited in claim 7 wherein the transmission is a worm and worm gear mechanism.
9. The indentation stiffness measurement device of a packaging material according to claim 1, characterized in that the distance between the cut edge and the indentation of the standard sample and the length of the standard sample are preset.
10. The indentation stiffness measurement device for packaging materials as in claim 1, further comprising a customized weight, wherein a positioning groove is provided at the bottom of the weight;
when the weight is used for calibrating the force transducer, the measuring line of the force transducer is parallel to the ground, and the weight is positioned on the measuring line through the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183338.2U CN220568631U (en) | 2023-08-14 | 2023-08-14 | Indentation stiffness measuring device for packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183338.2U CN220568631U (en) | 2023-08-14 | 2023-08-14 | Indentation stiffness measuring device for packaging material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220568631U true CN220568631U (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322183338.2U Active CN220568631U (en) | 2023-08-14 | 2023-08-14 | Indentation stiffness measuring device for packaging material |
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| Country | Link |
|---|---|
| CN (1) | CN220568631U (en) |
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2023
- 2023-08-14 CN CN202322183338.2U patent/CN220568631U/en active Active
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