CN110823702A - Auxiliary device for testing peel strength of heat shrinkable sleeve - Google Patents
Auxiliary device for testing peel strength of heat shrinkable sleeve Download PDFInfo
- Publication number
- CN110823702A CN110823702A CN201911242308.6A CN201911242308A CN110823702A CN 110823702 A CN110823702 A CN 110823702A CN 201911242308 A CN201911242308 A CN 201911242308A CN 110823702 A CN110823702 A CN 110823702A
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- Prior art keywords
- supporting
- base
- wheel seat
- peel strength
- heat shrinkable
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000003825 pressing Methods 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 238000007719 peel strength test Methods 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an auxiliary device for testing the peel strength of a heat shrinkable sleeve, which comprises a base, wherein at least two groups of supporting components are arranged on the base at intervals along the front-back direction, each group of supporting components comprises at least three rotating supporting parts capable of rotating relative to the base, the axes of the rotating supporting parts are mutually parallel or collinear, and in the same group of supporting components, an accommodating space capable of installing a pipe fitting is formed between the rotating supporting parts. In the invention, in the process of pulling the test block by the clamp, the component force of the pulling force of the clamp in the tangential direction of the pipe fitting can drive the pipe fitting to rotate, so that the included angle between the pulling force direction of the clamp and the connecting end of the test block is kept basically unchanged, and the accuracy of a test result is ensured.
Description
Technical Field
The invention relates to an auxiliary device for testing the peel strength of a heat shrinkable sleeve.
Background
The heat shrinkable sleeve product is designed for corrosion prevention of welded junctions of buried and overhead steel pipelines and heat preservation repaired ports of heat preservation pipelines, and is sleeved on the outer wall of the pipeline when in use. The peel strength of the heat shrinkable sleeve is an important parameter of the heat shrinkable sleeve, and in the prior art, the peel strength of the heat shrinkable sleeve is tested by a special testing instrument, and the testing process is as follows: firstly, fixing the pipe fitting coated with the heat shrinkable sleeve on a workbench; then, cutting a test block on the heat-shrinkable sleeve, and then tilting the test block to expose one end of the test block and still connect the other end of the test block with the heat-shrinkable sleeve; and then, clamping the free end of the test block by using a clamp, then pulling the test block at a constant speed at a certain speed, gradually stripping the test block, recording a pulling force value at certain time intervals in the stripping process, finally, breaking and stripping the test block, recording the pulling force value during breaking, and calculating the stripping strength of the heat shrinkable sleeve according to the recorded data.
Such a testing device has the following defect that because the pipe fitting is fixed on the workbench, in the process of peeling off the testing block, the included angle between the tension direction of the clamp and the connecting end of the testing block can be changed continuously, so that the measured tension value is inaccurate, and the peeling strength value calculated by the tension values is also inaccurate.
Disclosure of Invention
In view of the above, the present invention aims to provide an auxiliary device for testing the peeling strength of a heat shrinkable sleeve, which can improve the testing precision.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a thermal contraction cover peel strength test auxiliary device, its includes the base, be provided with at least two sets of supporting components along fore-and-aft direction interval on the base, each supporting component of group includes that at least three can be for the pivoted rotation support piece of base, and the axis of each rotation support piece is parallel to each other or collineation, and in the same supporting component of group, form the accommodation space that can install the pipe fitting between each rotation support piece.
Preferably, in each group of supporting assemblies, at least one rotating supporting member is a pressing wheel, the supporting assemblies further comprise a pressing wheel seat, the pressing wheel is rotatably mounted on the pressing wheel seat, and the base is further provided with a driving device capable of driving the pressing wheel seat to move so as to press the pipe fitting through the pressing wheel.
Preferably, the driving device comprises an air cylinder arranged on the base, and the pinch roller seat is connected to the output end of the air cylinder.
Preferably, in the same group of supporting assemblies, the number of the rotating supporting members is four, two of the rotating supporting members are press wheels, two of the press wheels are supporting wheels, the two press wheels are coaxially arranged on the front side and the rear side of a press wheel seat, the base is provided with a supporting wheel seat, and the two supporting wheels are rotatably arranged on the supporting wheel seat.
Preferably, the supporting wheel seat is arranged on the base in a back-and-forth moving manner, and a locking device capable of locking the supporting wheel seat to multiple positions of the base is arranged between the base and the supporting wheel seat.
Preferably, the base is provided with an elongated hole arranged along the front-rear direction and penetrating vertically, and the locking device comprises a locking screw, and a threaded end of the locking screw penetrates through the elongated hole from bottom to top and is in threaded connection with the supporting wheel seat.
Preferably, the elongated hole is a counter bore with a wide lower part and a narrow upper part, and the head of the locking screw is accommodated in the counter bore.
The invention has the beneficial effects that: in the invention, as the rotary supporting pieces for mounting the pipe fitting are all rotatable, in the process of pulling the test block by the clamp, the component force of the tensile force of the clamp in the tangential direction of the pipe fitting can drive the pipe fitting to rotate, so that the included angle between the tensile force direction of the clamp and the connecting end of the test block is kept basically unchanged, and the accuracy of a test result is ensured.
Drawings
FIG. 1 is a schematic structural view of the working state of the present invention;
FIG. 2 is a schematic diagram of a peel strength test for a heat shrinkable sleeve;
FIG. 3 is a schematic view of the mounting structure of the support wheel base;
fig. 4 is a sectional view taken along line a-a of fig. 3.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, an embodiment of the present invention provides an auxiliary device for testing peel strength of a heat shrinkable sleeve, which includes a base 1, wherein at least two groups of support assemblies are disposed on the base 1 at intervals along a front-back direction, each group of support assemblies includes at least three rotational support members capable of rotating relative to the base 1, axes of the rotational support members are parallel or collinear, and in the same group of support assemblies, an accommodating space capable of installing a pipe 6 is formed between the rotational support members.
The invention is used for installing the pipe fittings 6 in the process of testing the peeling strength of the heat shrinkable sleeve 61, the number of the groups of the supporting components can be 2 groups, 3 groups, 4 groups and the like, and 2 groups are preferred; the number of rotating supports in each set of support assemblies is 3, 4, 5, etc. Taking 2 groups of supporting components as an example, in the working process of the invention, two ends of the pipe fitting 6 are respectively arranged in the accommodating spaces of the two groups of supporting components, the testing method is that a testing block 611 is cut on the heat shrinkage sleeve 61, then the testing block 611 is tilted, so that one end of the testing block 611 is exposed, and the other end is still connected with the heat shrinkage sleeve 61; then, a clamp 5 is used to clamp the free end of the test block 611, then the test block 611 is pulled at a constant speed, in the peeling process, the pulling force value is recorded at regular intervals, finally the test block 611 is pulled apart and peeled off, the pulling force value in the pulling apart process is recorded, and the peeling strength of the heat shrinkable sleeve 61 is calculated according to the recorded data. In the invention, as the rotary supporting pieces for mounting the pipe fitting 6 are all rotatable, in the process that the clamp 5 pulls the test block 611, the component force of the tensile force of the clamp 5 in the tangential direction of the pipe fitting 6 can drive the pipe fitting 6 to rotate, so that the included angle between the tensile force direction of the clamp 5 and the connecting end of the test block 611 is kept basically unchanged, and the accuracy of a test result is ensured.
As a further improvement of the present invention, in each set of supporting assemblies, at least one of the rotating supporting members is a pressing wheel 21, the supporting assemblies further include a pressing wheel seat 23, the pressing wheel 21 is rotatably mounted on the pressing wheel seat 23, the pressing wheel 21 and the pressing wheel seat 23 are generally hinged by a rotating shaft, and the base 1 is further provided with a driving device capable of driving the pressing wheel seat 23 to move so as to press the pipe fitting 6 by the pressing wheel 21.
In one aspect of the present invention, the number of the rotating supporting members is four, two of the rotating supporting members are press wheels 21, two of the rotating supporting members are supporting wheels 22, and the two press wheels 21 are coaxially installed at the front and rear sides of a press wheel seat 23.
Preferably, the driving device comprises a cylinder 3 arranged on the base 1, and the pressure wheel seat 23 is connected to the output end of the cylinder 3. One end of the pipe fitting 6 is firstly installed on two supporting wheels 22, and then a pinch roller seat 23 is driven by the air cylinder 3 to move so as to tightly press the pipe fitting 6 through a pinch roller 21; the advantage of using the cylinder 3 to compress the workpiece is that the pressing force can be controlled by controlling the input air pressure, so that the rolling friction force between the pressing wheel 21 and the pipe fitting 6 is kept in a relatively proper range, and the pipe fitting 6 can roll along with the pressing wheel when the clamp 5 pulls the test block 611. In some aspects of the invention, the pneumatic rod may be replaced by a spring or a hydraulic cylinder.
Referring to fig. 1, a supporting wheel seat 12 is provided on a base 1, in the same set of supporting components, two supporting wheels 22 are rotatably mounted on the same supporting wheel seat 12, and the supporting wheels 22 and the supporting wheel seat 12 are generally hinged through a rotating shaft.
As a further improvement of the invention, the supporting wheel seat 12 is arranged on the base 1 and can move back and forth, and a locking device capable of locking the supporting wheel seat 12 at a plurality of positions of the base 1 is arranged between the base 1 and the supporting wheel seat 12. The arrangement enables the front and rear positions of the supporting wheel seat 12 to be adjustable, and the length change of the pipe fitting 6 can be adapted by adjusting the front and rear positions of the supporting wheel seat 12 in each group of supporting assemblies.
Referring to fig. 3 and 4, the base 1 is provided with an elongated hole 13 arranged along the front-back direction and penetrating up and down, the locking device includes a locking screw 4, and a threaded end of the locking screw 4 penetrates through the elongated hole 13 from bottom to top and is in threaded connection with the supporting wheel seat 12. The locking screw 4 is unscrewed, and the supporting wheel seat 12 can be moved along the long hole 13; after the locking screw 4 is moved to the right position, the locking screw is screwed down.
Further, the elongated hole 13 is a counter bore with a wide bottom and a narrow top, and the head of the locking screw 4 is accommodated in the counter bore. Preferably, the locking screw 4 is a socket head cap screw.
The above is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (7)
1. The utility model provides a thermal contraction cover peel strength test auxiliary device which characterized in that, its includes base (1), be provided with at least two sets of supporting component along preceding back direction interval on base (1), each supporting component of group includes that at least three can be for base (1) pivoted rotation support piece, and each rotation support piece's axis is parallel to each other or collineation, and in the same supporting component of group, each rotation support piece forms the accommodation space that can install pipe fitting (6) between each.
2. The auxiliary device for testing the peel strength of the heat shrinkable sleeve according to claim 1, wherein at least one rotating support member of each set of support assemblies is a pressing wheel (21), each support assembly further comprises a pressing wheel seat (23), the pressing wheel (21) is rotatably mounted on the pressing wheel seat (23), and the base (1) is further provided with a driving device capable of driving the pressing wheel seat (23) to move so as to press the pipe (6) through the pressing wheel (21).
3. The auxiliary device for testing the peel strength of the heat shrinkable sleeve according to claim 2, wherein the driving device comprises a cylinder (3) disposed on the base (1), and the pressing wheel seat (23) is connected to an output end of the cylinder (3).
4. The auxiliary device for testing the peel strength of the heat shrinkable sleeve according to claim 1, wherein in the same group of supporting assemblies, four rotating supporting members are provided, two of the rotating supporting members are press wheels (21), two of the rotating supporting members are supporting wheels (22), the two press wheels (21) are coaxially installed at the front side and the rear side of a press wheel seat (23), the base (1) is provided with a supporting wheel seat (12), and the two supporting wheels (22) are rotatably installed at the supporting wheel seat (12).
5. The device for assisting the peel strength test of the heat shrinkable sleeve according to claim 4, wherein the supporting wheel seat (12) is arranged on the base (1) in a manner of moving back and forth, and a locking device capable of locking the supporting wheel seat (12) at a plurality of positions of the base (1) is arranged between the base (1) and the supporting wheel seat (12).
6. The auxiliary device for testing the peel strength of the heat shrinkable sleeve according to claim 5, wherein the base (1) is provided with an elongated hole (13) which is arranged along the front-back direction and penetrates up and down, the locking device comprises a locking screw (4), and the threaded end of the locking screw (4) penetrates through the elongated hole (13) from bottom to top and is in threaded connection with the supporting wheel seat (12).
7. The auxiliary device for testing the peel strength of the heat shrinkable sleeve as claimed in claim 6, wherein the elongated hole (13) is a counter bore with a wide bottom and a narrow top, and the head of the locking screw (4) is received in the counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242308.6A CN110823702A (en) | 2019-12-06 | 2019-12-06 | Auxiliary device for testing peel strength of heat shrinkable sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242308.6A CN110823702A (en) | 2019-12-06 | 2019-12-06 | Auxiliary device for testing peel strength of heat shrinkable sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110823702A true CN110823702A (en) | 2020-02-21 |
Family
ID=69545035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242308.6A Pending CN110823702A (en) | 2019-12-06 | 2019-12-06 | Auxiliary device for testing peel strength of heat shrinkable sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110823702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4040136A4 (en) * | 2020-06-23 | 2022-12-21 | LG Energy Solution, Ltd. | System and method for fatigue testing of metal foil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2008107433A (en) * | 2008-02-26 | 2009-09-20 | ОАО"Волжский трубный завод". (RU) | DEVICE FOR DETERMINING THE STRENGTH OF COATING COUPLING AT THE PIPE DURING PERFORMANCE |
| CN204116143U (en) * | 2014-08-26 | 2015-01-21 | 陕西法士特齿轮有限责任公司 | A kind of metal stretching device for measuring properties |
| CN204495703U (en) * | 2015-03-31 | 2015-07-22 | 中国飞机强度研究所 | A kind of adhesive 90 ° of stripping test clamps |
| KR20150085715A (en) * | 2014-01-16 | 2015-07-24 | 삼성전기주식회사 | Apparatus for measuring peel strength |
| CN206632601U (en) * | 2017-03-17 | 2017-11-14 | 济南诺斯机械有限公司 | A kind of automatic pressing turning rolls |
| CN209157556U (en) * | 2018-12-11 | 2019-07-26 | 青岛嘉恒新能源设备有限公司 | A kind of tower processing interior welds equipment |
| CN211553597U (en) * | 2019-12-06 | 2020-09-22 | 港华辉信工程塑料(中山)有限公司 | Auxiliary device for testing peel strength of heat shrinkable sleeve |
-
2019
- 2019-12-06 CN CN201911242308.6A patent/CN110823702A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2008107433A (en) * | 2008-02-26 | 2009-09-20 | ОАО"Волжский трубный завод". (RU) | DEVICE FOR DETERMINING THE STRENGTH OF COATING COUPLING AT THE PIPE DURING PERFORMANCE |
| KR20150085715A (en) * | 2014-01-16 | 2015-07-24 | 삼성전기주식회사 | Apparatus for measuring peel strength |
| CN204116143U (en) * | 2014-08-26 | 2015-01-21 | 陕西法士特齿轮有限责任公司 | A kind of metal stretching device for measuring properties |
| CN204495703U (en) * | 2015-03-31 | 2015-07-22 | 中国飞机强度研究所 | A kind of adhesive 90 ° of stripping test clamps |
| CN206632601U (en) * | 2017-03-17 | 2017-11-14 | 济南诺斯机械有限公司 | A kind of automatic pressing turning rolls |
| CN209157556U (en) * | 2018-12-11 | 2019-07-26 | 青岛嘉恒新能源设备有限公司 | A kind of tower processing interior welds equipment |
| CN211553597U (en) * | 2019-12-06 | 2020-09-22 | 港华辉信工程塑料(中山)有限公司 | Auxiliary device for testing peel strength of heat shrinkable sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4040136A4 (en) * | 2020-06-23 | 2022-12-21 | LG Energy Solution, Ltd. | System and method for fatigue testing of metal foil |
| US12153024B2 (en) | 2020-06-23 | 2024-11-26 | Lg Energy Solution, Ltd. | System and method for fatigue testing of metal foil |
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