CN105784474B - Pack pressure-bearing test method and its test device - Google Patents
Pack pressure-bearing test method and its test device Download PDFInfo
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- CN105784474B CN105784474B CN201410778748.4A CN201410778748A CN105784474B CN 105784474 B CN105784474 B CN 105784474B CN 201410778748 A CN201410778748 A CN 201410778748A CN 105784474 B CN105784474 B CN 105784474B
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- metering unit
- tested
- packaging
- pressure
- bearing test
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims abstract description 49
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract 1
- 239000004590 silicone sealant Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 239000003292 glue Substances 0.000 description 7
- 238000013139 quantization Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000551 dentifrice Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of packaging pressure-bearing test method and its test devices, packing pressure-bearing test method includes: that object to be tested is longitudinally placed on bottom plate, metering unit is reset, then start pressing member in preset speed, extensible member driving contact element presses to the end in the radial direction of object, and further such that the pressure that press rods drive contact component to be forced into metering unit down reaches predetermined value, holding preset time records object packaging to be tested and destroys situation；On the laterally disposed bottom plate of object to be tested, metering unit is reset, then start pressing member in preset speed, extensible member driving contact element presses to the outer wall on the axial direction of object, pressure to the test article that press rods drive contact component to be further forced into metering unit down packs destruction, metering unit data when record packaging is destroyed.Packaging pressure-bearing test method of the present invention, easy to use, it is accurate and at low cost to detect.
Description
Technical field
The present invention relates to pressure sensing arts, more particularly to a kind of packaging pressure-bearing test method and its test device.
Background technique
The kind of packing of silicone sealant has plastic barrel, mantle, dentifrice tube, plastic barrel, big metal bucket etc., wherein one-component
Silicone sealant using it is wide be packing element packaging and mantle packaging.The silicone sealant of mantle packaging in production can be with
When adjust bale capacity, packing cost is cheap, scene use when it is efficient and convenient, these advantages deeply is liked by client.But mantle
Also shortcoming is existed simultaneously, is easy explosion when heat seal seam is by certain extruding, the buckle at both ends is also easy certain
Percussion under fall off.Therefore, the mantle packaging pressure-bearing detection of silicone sealant becomes particularly important.
Summary of the invention
Based on this, it is necessary to provide a kind of convenient test, avoid the packaging pressure-bearing for generating Decrepitation Phenomena during the test
Test method.
A kind of packaging pressure-bearing test method, includes the following steps:
Object to be tested is longitudinally placed on bottom plate, metering unit is reset, then starting pressurization in preset speed
The groove of component, extensible member driving contact element presses to the end in the radial direction of object, and further such that pressure
The pressure that bar drives contact component to be forced into metering unit down reaches predetermined value, keeps preset time, records object to be tested
Packaging destroys situation；
On the laterally disposed bottom plate of object to be tested, metering unit is reset, then starts pressing member in preset speed,
The groove of extensible member driving contact element presses to the outer wall on the axial direction of object, and press rods drive contact component into one
The pressure that step is forced into metering unit down is packed to test article to be destroyed, metering unit data when record packaging is destroyed.
Packaging pressure-bearing test method of the present invention, required equipment is simple, and test method is easy, and test result is quasi-
Really.Packaging pressure-bearing test method of the present invention, test method is flexible, and simulation silicone sealant is soft very well for experimental rig energy
Film is packaged in the stressing influence situation in transport and use process, and provides the judgment basis of quantization, facilitates silicone sealant
The factory testing of product packaging quality works.
Another object of the present invention is to provide a kind of easy to use, the accurate and at low cost packaging pressure-bearing test dresses of detection
It sets.
A kind of packaging pressure-bearing test device, including bracket, bottom plate, extensible member, pressing member, metering unit, the branch
Frame is fixed on the bottom plate, and the top of the bracket has support arm, has interval, institute between the support arm and the bottom plate
It states metering unit to be set on the bottom plate, the extensible member is connected to the support arm；
The pressing member have press rods and contact element, the press rods be connected to the extensible member and toward
The metering unit, the contact element are connected to end of the press rods towards metering unit.
In one of the embodiments, when object to be tested is placed longitudinally, the contact element has groove, described recessed
Slot is matched with the radial dimension of object；
When object to be tested is laterally disposed, the contact element has contact plate, the contact plate benging, and contact plate
Flexure plane is matched with the outer wall on the axial direction of object.
Further include positioning plate in one of the embodiments, when object to be tested is placed longitudinally, has on the positioning plate
There is locating slot, the size of the locating slot is matched with the radial dimension of object to be tested.
It further include for promoting the metering unit in one of the embodiments, when object to be tested is laterally disposed
To the supporting plate of predetermined altitude, the metering unit is set on the supporting plate.
The extensible member is that outer wall has threaded telescopic rod in one of the embodiments, is had on the support arm
There is the tapped through hole being vertically arranged, the telescopic rod runs through the tapped through hole, and the press rods are connected to the telescopic rod court
To one end of metering unit.
Rotational handle is also connected on the telescopic rod in one of the embodiments, the rotational handle is connected to institute
Telescopic rod is stated towards one end at the top of support arm.
The rotational handle is u-shaped in one of the embodiments, and the bottom of the U-shaped is even based on described flexible
Bar, two ends of the U-shaped are towards at the top of support arm.
The metering unit is the electronic platform scale with supporting surface in one of the embodiments,.
Packaging pressure-bearing test device of the present invention, passes through bracket, bottom plate, extensible member, pressing member, metering unit
Cooperation, the pressing member have press rods and contact element, the press rods be connected to the extensible member and toward
The metering unit, the contact element are connected to end of the press rods towards metering unit.When object to be tested is placed in
On metering unit, by the pressurization of pressing member, it can be achieved that the proof pressure situation of object, fast and easy, and required equipment
Simply.
Packaging pressure-bearing test device of the present invention, structure is simple, easy to operate, method is flexible, of the present invention
Packaging pressure-bearing test device can be used for the packaging pressure-bearing test of silicone sealant mantle, to find silicone sealant mantle in advance
The packaging quality problem of product enables the quick-fried film phenomenon of silicone sealant mantle packaging product rapidly to reflect, to have
Help the factory testing of product, guarantees that product meets transport, storage and the requirement of constructing operation.
In test, required device structure is simple, easy to operate, test side for packaging pressure-bearing test device of the present invention
Method is flexible, and experimental rig can be packaged in the stressing influence feelings in transport and use process by simulation silicone sealant mantle very well
Condition, and the judgment basis of quantization is provided, facilitate the factory testing work of silicone sealant product packaging quality.
Detailed description of the invention
Fig. 1 is schematic diagram when the embodiment of the present invention packs the progress vertical bearing detection of pressure-bearing test device；
Fig. 2 is schematic diagram when the embodiment of the present invention packs pressure-bearing test device progress horizontal pressure-bearing detection.
Description of symbols
1, bracket；2, telescopic rod；3, rotational handle；4, electronic platform scale；5, bottom plate；6, I type squeezes contact head；7, it positions
Plate；8, sample stack shell；9, II type squeezes contact head；10, supporting plate；11, glue sample to be measured；12, press rods.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
A kind of packaging pressure-bearing test device, referring to shown in Fig. 1 and Fig. 2, including bracket 1, bottom plate 5, extensible member, pressurization part
Part, metering unit, the metering unit are the electronic platform scale 4 with supporting surface.The bracket 1 is fixed on the bottom plate 5, described
The top of bracket 1 has support arm, has interval between the support arm and the bottom plate 5, and the metering unit is set to institute
It states on bottom plate 5, the extensible member is connected to the support arm；
The pressing member has press rods 12 and contact element, and the press rods 12 are connected to the extensible member and court
To in the metering unit, the contact element is connected to the press rods 12 towards the end of metering unit.
Shown in Figure 1, when object to be tested is placed longitudinally, there is the contact element groove formation I type extruding to connect
Contact 6, the matching grooves are in the radial dimension of object；It further include positioning plate 7 when object to be tested is placed longitudinally, it is described
There is locating slot, the size of the locating slot is matched with the radial dimension of object to be tested on positioning plate 7.
Shown in Figure 2, when object to be tested is laterally disposed, there is the contact element contact plate to form the extruding of II type
Contact head 9, the contact plate benging, and contact plate flexure plane is matched with the outer wall on the axial direction of object.When object to be tested
It further include the supporting plate 10 for promoting the metering unit (electronic platform scale 4) to predetermined altitude, the metering when part is laterally disposed
Component (electronic platform scale 4) is set on the supporting plate 10.
Further, in this embodiment the extensible member be that outer wall has a threaded telescopic rod 2, on the support arm
With the tapped through hole being vertically arranged, the telescopic rod 2 runs through the tapped through hole, and the press rods 12 are connected to described flexible
Bar 2 is towards one end of metering unit.Rotational handle 3 is also connected on the telescopic rod 2, the rotational handle 3 is connected to described
Telescopic rod 2 is towards one end at the top of support arm.The rotational handle 3 is u-shaped, and the bottom of the U-shaped is even based on described stretch
Contracting bar 2, two ends of the U-shaped are towards at the top of support arm.
Packaging pressure-bearing test device of the present invention, carry out object pressure-bearing detection when, including the following institute of method
Show:
Bracket 1 is placed in horizontal table top, then electronic platform scale 4 is placed on the bottom plate 5 in bracket 1, according to different surveys
The extruding contact head and related elements of method for testing selection different model；
Vertical bearing detection: shown in Figure 1, when object to be tested is placed longitudinally, vertical bearing detection should select I type
Contact head 6 and positioning plate 7 are squeezed, positioning plate 7 is placed on the supporting surface of electronic platform scale 4, it is fixed that sample stack shell 8 is longitudinally mounted to
In the locating slot of position plate 7, object to be tested (glue sample 11 to be measured) is put into sample stack shell 8, electronic platform scale 4 is reset；Then
Rotational handle 3 is rotated with certain speed, so that press rods 12 drive I type to squeeze contact head 6 is forced into predetermined value down, is kept
It 5 seconds, records the packaging of glue sample 11 to be measured and destroys situation.
The detection of horizontal pressure-bearing: shown in Figure 2, horizontal pressure-bearing should select II type to squeeze contact head 9 when detecting, and by electronics
Platform balance 4 sets aside to the proper height of bracket 1 by supporting plate 10, to squeeze the height of contact head 9 with II type of cooperation, by glue to be measured
Sample 11 is lain against on the supporting surface of electronic platform scale 4, and hot commissure should be towards tester direction, and glue sample 11 to be measured needs face pressure
12 lower section of power bar；Platform balance is reset, rotational handle 3 is then rotated with certain speed, so that press rods 12 drive II type to squeeze
Contact head 9 is forced into the packaging of glue sample 11 down and destroys, and records the data when packaging of glue sample 11 to be measured is destroyed.
Packaging pressure-bearing test device of the present invention, passes through bracket, bottom plate, extensible member, pressing member, metering unit
Cooperation, the pressing member have press rods and contact element, the press rods be connected to the extensible member and toward
The metering unit, the contact element are connected to end of the press rods towards metering unit.When object to be tested is placed in
On metering unit, by the pressurization of pressing member, it can be achieved that the proof pressure situation of object, fast and easy, and required equipment
Simply.
Packaging pressure-bearing test device of the present invention, structure is simple, easy to operate, method is flexible, of the present invention
Packaging pressure-bearing test device can be used for the packaging pressure-bearing test of silicone sealant mantle, to find silicone sealant mantle in advance
The packaging quality problem of product enables the quick-fried film phenomenon of silicone sealant mantle packaging product rapidly to reflect, to have
Help the factory testing of product, guarantees that product meets transport, storage and the requirement of constructing operation.
In test, required device structure is simple, easy to operate, test side for packaging pressure-bearing test device of the present invention
Method is flexible, and experimental rig can be packaged in the stressing influence feelings in transport and use process by simulation silicone sealant mantle very well
Condition, and the judgment basis of quantization is provided, facilitate the factory testing work of silicone sealant product packaging quality.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. a kind of packaging pressure-bearing test device, which is characterized in that including bracket, bottom plate, extensible member, pressing member, measurement unit
Part, the bracket are fixed on the bottom plate, and the top of the bracket has support arm, has between the support arm and the bottom plate
There is interval, the metering unit is set on the bottom plate, and the extensible member is connected to the support arm；
The pressing member has press rods and contact element, and the press rods are connected to the extensible member and toward described
Metering unit, the contact element are connected to end of the press rods towards metering unit；
When object to be tested is placed longitudinally, the contact element has groove, the matching grooves in the radial dimension of object,
Further include positioning plate, there is locating slot on the positioning plate, the size of the locating slot is matched with the radial ruler of object to be tested
It is very little；When object to be tested is laterally disposed, the contact element has contact plate, the contact plate benging, and contacts plate benging
Face is matched with the outer wall on the axial direction of object.
2. packaging pressure-bearing test device according to claim 1, which is characterized in that when object to be tested is laterally disposed,
It further include the supporting plate for promoting the metering unit to predetermined altitude, the metering unit is set on the supporting plate.
3. packaging pressure-bearing test device according to claim 1 or 2, which is characterized in that the extensible member is outer wall tool
Threaded telescopic rod has the tapped through hole being vertically arranged on the support arm, and the telescopic rod runs through the tapped through hole,
The press rods are connected to the one end of the telescopic rod towards metering unit.
4. packaging pressure-bearing test device according to claim 3, which is characterized in that be also connected with rotation on the telescopic rod
Handle, the rotational handle are connected to the telescopic rod towards one end at the top of support arm.
5. packaging pressure-bearing test device according to claim 4, which is characterized in that the rotational handle is u-shaped, described
The bottom of U-shaped is connected to the telescopic rod, and two ends of the U-shaped are towards at the top of support arm.
6. packaging pressure-bearing test device according to claim 1 or 2, which is characterized in that the metering unit is with branch
The electronic platform scale in support face.
7. a kind of packaging pressure-bearing test method using the packaging pressure-bearing test device as claimed in any one of claims 1 to 6,
It is characterized in that, includes the following steps:
Object to be tested is longitudinally placed on bottom plate, the bottom of the object to be tested is located in the locating slot on positioning plate,
Metering unit is reset, then starts pressing member in preset speed, extensible member driving contact element presses to object
The radial dimension of end in the radial direction, end of the groove of contact element with object to be tested upward matches, and goes forward side by side one
Step is so that the pressure that press rods drive contact component to be forced into metering unit down reaches predetermined value, holding preset time, record
Object packaging to be tested destroys situation；
On the laterally disposed bottom plate of object to be tested, metering unit is reset, then starts pressing member in preset speed, stretched
Component driving contact element presses to the outer wall on the axial direction of object, and press rods drive contact component further to pressurize down
It packs and destroys to the pressure of metering unit to test article, metering unit data when record packaging is destroyed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778748.4A CN105784474B (en) | 2014-12-15 | 2014-12-15 | Pack pressure-bearing test method and its test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778748.4A CN105784474B (en) | 2014-12-15 | 2014-12-15 | Pack pressure-bearing test method and its test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105784474A CN105784474A (en) | 2016-07-20 |
| CN105784474B true CN105784474B (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410778748.4A Active CN105784474B (en) | 2014-12-15 | 2014-12-15 | Pack pressure-bearing test method and its test device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110243546B (en) * | 2019-07-18 | 2024-04-23 | 中国铁建重工集团股份有限公司 | Articulated sealing test bed of heading machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2867334Y (en) * | 2006-01-10 | 2007-02-07 | 天津郁美净集团有限公司 | Packed cosmetics pressure-tight tester |
| CN201653827U (en) * | 2010-02-09 | 2010-11-24 | 上海宝钢印铁有限公司 | Metal can side strength detecting device |
| CN202092914U (en) * | 2011-06-13 | 2011-12-28 | 武汉钢铁(集团)公司 | Compressive strength detection device for fresh pellets |
| CN202153198U (en) * | 2011-07-28 | 2012-02-29 | 大连巨通塑料制品有限公司 | Bag body pressure resistance detection device |
| CN203203881U (en) * | 2013-05-04 | 2013-09-18 | 河北永新包装有限公司 | Pressure-resistance detection device of soft plastic package bag |
| CN203587439U (en) * | 2013-11-14 | 2014-05-07 | 苏州博克企业集团有限公司 | Pressure-supporting detection device of packaging bag |
| CN204461895U (en) * | 2014-12-15 | 2015-07-08 | 广州市白云化工实业有限公司 | Packaging pressure-bearing proving installation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100213746B1 (en) * | 1996-12-23 | 1999-08-02 | 전주범 | Pressure resistance tester of package for electronic products |
| JP4087670B2 (en) * | 2002-09-13 | 2008-05-21 | 花王株式会社 | Container pressure tester |
-
2014
- 2014-12-15 CN CN201410778748.4A patent/CN105784474B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2867334Y (en) * | 2006-01-10 | 2007-02-07 | 天津郁美净集团有限公司 | Packed cosmetics pressure-tight tester |
| CN201653827U (en) * | 2010-02-09 | 2010-11-24 | 上海宝钢印铁有限公司 | Metal can side strength detecting device |
| CN202092914U (en) * | 2011-06-13 | 2011-12-28 | 武汉钢铁(集团)公司 | Compressive strength detection device for fresh pellets |
| CN202153198U (en) * | 2011-07-28 | 2012-02-29 | 大连巨通塑料制品有限公司 | Bag body pressure resistance detection device |
| CN203203881U (en) * | 2013-05-04 | 2013-09-18 | 河北永新包装有限公司 | Pressure-resistance detection device of soft plastic package bag |
| CN203587439U (en) * | 2013-11-14 | 2014-05-07 | 苏州博克企业集团有限公司 | Pressure-supporting detection device of packaging bag |
| CN204461895U (en) * | 2014-12-15 | 2015-07-08 | 广州市白云化工实业有限公司 | Packaging pressure-bearing proving installation |
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| Publication number | Publication date |
|---|---|
| CN105784474A (en) | 2016-07-20 |
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Address after: No. 1 Yun'an Road, Guangzhou Private Science and Technology Park, Baiyun District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Baiyun Technology Co.,Ltd. Address before: No. 1 Yun'an Road, Guangzhou Private Science and Technology Park, Baiyun District, Guangzhou City, Guangdong Province, 510000 Patentee before: GUANGZHOU BAIYUN CHEMICAL INDUSTRY Co.,Ltd. |