CN107247066B - Device for testing cracking resistance of rubber material - Google Patents
Device for testing cracking resistance of rubber material Download PDFInfo
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- CN107247066B CN107247066B CN201710619299.2A CN201710619299A CN107247066B CN 107247066 B CN107247066 B CN 107247066B CN 201710619299 A CN201710619299 A CN 201710619299A CN 107247066 B CN107247066 B CN 107247066B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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Abstract
The invention discloses a device for testing the cracking resistance of rubber materials, wherein the front end of an aging box is provided with a glass door which can be opened and closed, the left side in the aging box is provided with a heat source, the top end in the aging box is provided with a first hot air box, the bottom end of the aging box is provided with a second hot air box, the first hot air box and the second hot air box are both communicated with the heat source, the top end of the first hot air box is provided with lower spray heads distributed in a matrix, and the bottom end of the second hot air box is provided with upper spray heads distributed in a matrix; the rotary drum is arranged between the first hot air box and the second hot air box, the rotary drum is arranged in a horizontal state, a cavity for hot air circulation is formed in the rotary drum, the left side of the rotary drum is connected to a heat supply branch pipe on the right side of a heat source through a sealing rotary joint, a driving mechanism is arranged on the right side of the rotary drum, and a vent hole communicated with the cavity is formed in the wall of the right side of the rotary drum; the outer wall of the rotary drum is provided with a positioning groove which is spirally arranged. The invention has the beneficial effects that: and the sample is heated uniformly in the aging process.
Description
Technical Field
The invention relates to the technical field of rubber material performance test, in particular to a device for testing the cracking resistance of a rubber material.
Background
Before the rubber and plastic material is subjected to cracking resistance test, the rubber and plastic material needs to be wound on a shaft, and after the rubber and plastic material is placed in an aging box for a period of time at a certain temperature, whether cracks exist on the surface of the rubber and plastic material is observed. In the prior art, samples to be tested are mostly kept still in an aging box for aging, and the temperature distribution in the aging box is uneven, so that the problem of uneven heating of the samples is caused, besides, the samples to be tested are fast in heating speed towards the outward side and slow in heating speed towards the shaft side, so that the problem of uneven heating inside and outside the samples is caused, the reliability of a test experiment is seriously influenced by the problems, and a device for testing the cracking resistance of rubber materials, which can avoid the problems, is still to be further researched and developed
Disclosure of Invention
The invention aims at overcoming the technical defects in the prior art and provides a device for testing the cracking resistance of a rubber material.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the device for testing the cracking resistance of the rubber material comprises an aging box, a rotating drum, a first heat supply side pipe, a sealing rotary joint, a heat supply branch pipe, a heat source, a second heat supply side pipe, a first hot air box, a lower spray head, a rotating shaft, an upper spray head, a second hot air box, an air vent, a positioning groove and a clamping mechanism;
the front end of the aging box is provided with an openable glass door, the left side in the aging box is provided with a heat source, the top end in the aging box is provided with a first hot air box, the bottom end of the aging box is provided with a second hot air box, the first hot air box is communicated with the heat source through a first heat supply bypass pipe, the second hot air box is communicated with the heat source through a second heat supply bypass pipe, the top end of the first hot air box is provided with lower spray heads distributed in a matrix, and the bottom end of the second hot air box is provided with upper spray heads distributed in a matrix;
the rotary drum is arranged between the first hot air box and the second hot air box, the rotary drum is arranged in a horizontal state, a cavity for hot air circulation is formed in the rotary drum, the left side of the rotary drum is connected to a heat supply branch pipe on the right side of a heat source through a sealing rotary joint, a driving mechanism is arranged on the right side of the rotary drum, and a vent hole communicated with the cavity is formed in the wall of the right side of the rotary drum;
the outer wall of the rotary drum is provided with a positioning groove which is spirally arranged, and the left side and the right side of the rotary drum are provided with clamping mechanisms for fixing the rubber belt.
Preferably, a rotating shaft is welded at the right end part of the rotating drum, the middle part of the rotating shaft is assembled on the right box wall of the aging box through a bearing structure, and a driving motor is arranged at the right end of the rotating shaft.
Preferably, the detent extends from the left side of the drum to the right side of the drum.
Preferably, the drums are provided with at least two, and the tightness of the helical detent of the outer circumference of each drum is different.
Preferably, the end part of the rotating shaft on the right side of any rotating cylinder is fixedly provided with a driven gear, the output shaft of the driving motor is fixedly provided with a driving gear, and the transmission chain surrounds the peripheries of the driving gear and the driven gear.
Preferably, the fixture comprises an upper clamping block and a lower clamping block, the left sides of the upper clamping block and the lower clamping block are hinged together through a hinge, the right sides of the upper clamping block and the lower clamping block are respectively provided with a fixing piece, the bottom end of the upper clamping block is provided with a first positioning groove, the top end of the lower clamping block is provided with a second positioning groove, and the first positioning groove and the second positioning groove are correspondingly arranged up and down.
Preferably, the fixing member includes a buckle provided on the upper clamping block and a buckle fixing structure provided on the lower clamping block.
Preferably, the left side of the heat source is provided with an air inlet chamber, the right side of the heat source is provided with an air outlet chamber, an axial flow fan and an electric heating tube are arranged between the air inlet chamber and the air outlet chamber, the air inlet chamber is provided with an air inlet, and the heat supply branch pipe, the second heat supply bypass pipe and the first heat supply bypass pipe are all communicated with the air outlet chamber.
Preferably, the outer wall of the aging box is coated with a heat insulating material.
Preferably, the extending direction of the electric heating tube is perpendicular to the wind flow direction.
Compared with the prior art, the invention has the beneficial effects that:
1. in the testing process, the sample rotates in the aging box, so that the test sample is heated more uniformly, the problem of local high temperature or local low temperature is avoided, and the measuring accuracy is improved.
2. In the test process, the heating temperature of the inner surface and the outer surface of the sample is the same, so that the reliability of measurement is improved.
3. The setting mode that the compactness of the heliciform constant head tank of a plurality of rotary drums and every rotary drum periphery is different can measure under the different load conditions of same temperature, and the degree of opening of rubber for this device function is more diversified.
4. The heat energy is recycled, so that the energy is saved and the environment is protected.
Drawings
Fig. 1 is a schematic diagram showing the structure of embodiment 1 of the invention.
Fig. 2 is a schematic structural view of embodiment 2 of the invention.
Fig. 3 is a schematic structural view of the clamping mechanism.
Fig. 4 is a schematic structural view of a heat source.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the device for testing the cracking resistance of the rubber material of the present embodiment includes an aging box 1, a drum 2, a first heat supply bypass pipe 3, a sealing rotary joint 4, a heat supply branch pipe 5, a heat source 6, a second heat supply bypass pipe 7, a first hot blast box 8, a lower nozzle 9, a driving motor 10, a rotating shaft 14, an upper nozzle 15, a second hot blast box 16, a vent hole 17, a positioning groove 18 and a clamping mechanism 19.
The front end of the ageing oven 1 is provided with a glass door capable of opening and closing, the left side in the ageing oven 1 is provided with a heat source 6, the top end in the ageing oven 1 is provided with a first hot air box 8, the bottom end is provided with a second hot air box 16, the first hot air box 8 is communicated with the heat source 6 through a first heat supply bypass pipe 3, the second hot air box 16 is communicated with the heat source 6 through a second heat supply bypass pipe 7, the top end of the first hot air box 8 is provided with lower spray heads 9 distributed in a matrix, and the bottom end of the second hot air box 16 is provided with upper spray heads 15 distributed in a matrix.
The rotary drum 2 is arranged between the first hot air box 8 and the second hot air box 16, the rotary drum 2 is arranged in a horizontal state, a cavity for hot air circulation is formed in the rotary drum 2, the left side of the rotary drum 2 is connected to the heat supply branch pipe 5 on the right side of the heat source 6 through the sealing rotary joint 4, the right side wall of the rotary drum 2 is provided with an air vent 17 communicated with the cavity, the right side end part of the rotary drum 2 is welded with a rotary shaft 14, the middle part of the rotary shaft 14 is assembled on the right side wall of the ageing oven 1 through a bearing structure, and the other end of the rotary shaft is fixed on the output shaft of the driving motor 10 through a coupler.
The outer wall of the rotary drum 2 is provided with a positioning groove 18 which is spirally arranged, the positioning groove 18 extends from the left side of the rotary drum 2 to the right side of the rotary drum 2, and the left side and the right side of the rotary drum 2 are provided with clamping mechanisms 19 for fixing rubber belts.
When the device is used for testing the cracking resistance, the heat source 6 is started, hot air enters the second hot air box 16 and the first hot air box 8 through the first heat supply side pipe 3 and the second heat supply side pipe 7, the upper spray head 15 is used for downwards supplying hot air, and the lower spray head 9 is used for upwards supplying hot air, so that the temperature distribution in the whole aging box 1 is more uniform, the temperature dead angle is avoided, and each part of the rubber belt can be uniformly heated.
One end of the rubber belt is fixed on a clamping mechanism 19 on the left side of the rotary drum 2, the middle part of the rubber belt is wound in a positioning groove 18, the other end of the rubber belt is fixed on the clamping mechanism 19 on the right side of the rotary drum 2, hot air enters a cavity in the rotary drum 2 through the heat supply branch pipe 5 and is discharged from the vent hole 17, and hot air flows through both the inner side and the outer side of the rotary drum 2, so that both the inner side and the outer side of the rubber belt can be heated uniformly, and the testing accuracy is improved.
After the rubber belt is fixed, the driving motor 10 is started, the rotary drum 2 starts to rotate, and the rotary drum 2 of the device is heated more uniformly in the rotating process relative to the test mode of sample standing, so that the accuracy and reliability of the test are further improved.
Example 2
This embodiment improves on the basis of embodiment 1, as shown in fig. 2, in this embodiment, the rotating drums 2 are provided with at least two rotating drums 2, and the tightness of the spiral positioning groove 18 at the periphery of each rotating drum 2 is different, the end part of the rotating shaft 14 at the right side of any rotating drum 2 is fixedly provided with the driven gear 13, the output shaft of the driving motor 10 is fixedly provided with the driving gear 11, and the transmission chain 12 surrounds the peripheries of the driving gear 11 and the driven gear 13.
In this embodiment, the drums are provided with a plurality of samples, and can simultaneously test a plurality of samples, and the tightness of the spiral positioning groove 18 at the periphery of each drum 2 is different, so that when the rubber belt samples with the same length are selected for fixing, the loads born by each rubber belt sample are different, the same temperature can be tested, and the anti-cracking performance of the rubber belt samples under different loads is compared, so that the relation between the anti-cracking performance and the load is obtained.
Example 3
The embodiment is improved on the basis of embodiment 1 or 2, as shown in fig. 3, the clamping mechanism 19 of the embodiment comprises an upper clamping block 21 and a lower clamping block 26, the left sides of the upper clamping block 21 and the lower clamping block 26 are hinged together through a hinge 20, a hasp 23 and a hasp fixing structure 24 are respectively arranged on the right sides of the upper clamping block 21 and the lower clamping block 26, a first positioning groove 22 is arranged at the bottom end of the upper clamping block 21, a second positioning groove 25 is arranged at the top end of the lower clamping block 26, and the first positioning groove 22 and the second positioning groove 25 are correspondingly arranged up and down.
When the clamping mechanism is used for fixing the rubber belt, the upper clamping block 21 is lifted, one end of the rubber belt is inserted into the second positioning groove 25, the upper clamping block 21 is rotated downwards, the hasp 23 is fixed on the hasp fixing structure 24, the rubber belt is clamped in the first positioning groove 22 and the second positioning groove 25 between the upper clamping block 21 and the lower clamping block 26, and when the rubber belt is taken out, the hasp structure formed by the hasp 23 and the hasp fixing structure 24 is opened, and the upper clamping block 21 is lifted.
Example 4
The embodiment is improved on the basis of embodiment 1 or 2, as shown in fig. 4, the left side of the heat source 6 is provided with an air inlet chamber 30, the right side is provided with an air outlet chamber 33, an axial flow fan 31 and an electric heating tube 32 are arranged between the air inlet chamber 30 and the air outlet chamber 33, the extending direction of the electric heating tube 32 is perpendicular to the air flow direction, the air inlet chamber 30 is provided with an air inlet 29, and the heat supply branch pipe 5, the second heat supply side pipe 7 and the first heat supply side pipe 3 are all communicated with the air outlet chamber 33.
In this embodiment, the air inlet 29 and the air outlets formed by the air vent 17, the upper nozzle 15 and the lower nozzle 9 are all arranged in the aging oven 1, so that heat in the aging oven 1 is recycled, and the energy-saving and environment-friendly effects are achieved.
In this embodiment, the outer wall of the aging oven 1 is covered with a heat insulating material.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The device for testing the cracking resistance of the rubber material is characterized by comprising an aging box, a rotary drum, a first heat supply side pipe, a sealing rotary joint, a heat supply branch pipe, a heat source, a second heat supply side pipe, a first hot air box, a lower spray head, a rotary shaft, an upper spray head, a second hot air box, an air vent, a positioning groove and a clamping mechanism;
the front end of the aging box is provided with an openable glass door, the left side in the aging box is provided with a heat source, the top end in the aging box is provided with a first hot air box, the bottom end of the aging box is provided with a second hot air box, the first hot air box is communicated with the heat source through a first heat supply bypass pipe, the second hot air box is communicated with the heat source through a second heat supply bypass pipe, the top end of the first hot air box is provided with lower spray heads distributed in a matrix, and the bottom end of the second hot air box is provided with upper spray heads distributed in a matrix;
the rotary drum is arranged between the first hot air box and the second hot air box, the rotary drum is arranged in a horizontal state, a cavity for hot air circulation is formed in the rotary drum, the left side of the rotary drum is connected to a heat supply branch pipe on the right side of a heat source through a sealing rotary joint, a driving mechanism is arranged on the right side of the rotary drum, and a vent hole communicated with the cavity is formed in the wall of the right side of the rotary drum;
the outer wall of the rotary drum is provided with a positioning groove which is spirally arranged, and the left side and the right side of the rotary drum are provided with clamping mechanisms for fixing rubber belts;
one end of the rubber belt is fixed on the clamping mechanism on the left side of the rotary drum, the middle part of the rubber belt is wound in the positioning groove, and the other end of the rubber belt is fixed on the clamping mechanism on the right side of the rotary drum;
the air inlet and the air outlet formed by the vent hole, the upper spray head and the lower spray head are all arranged in the aging box, so that heat in the aging box is recycled, and the energy-saving and environment-friendly effects are achieved.
2. The device for testing the cracking resistance of the rubber material according to claim 1, wherein a rotating shaft is welded at the right end part of the rotating cylinder, the middle part of the rotating shaft is assembled on the right box wall of the aging box through a bearing structure, and a driving motor is arranged at the right end of the rotating shaft.
3. An apparatus for testing the resistance to cracking of a rubber material as in claim 1 wherein said detent extends from the left side of the drum to the right side of the drum.
4. A device for testing the anti-cracking performance of rubber materials according to claim 1, wherein at least two drums are provided, and the tightness of the spiral-shaped positioning grooves at the periphery of each drum is different.
5. The device for testing the cracking resistance of a rubber material according to claim 4, wherein a driven gear is fixedly arranged at the end part of the rotating shaft at the right side of any rotating drum, a driving gear is fixedly arranged on the output shaft of the driving motor, and a transmission chain surrounds the peripheries of the driving gear and the driven gear.
6. The device for testing the cracking resistance of the rubber material according to claim 1, wherein the clamping mechanism comprises an upper clamping block and a lower clamping block, the left sides of the upper clamping block and the lower clamping block are hinged together through a hinge, fixing pieces are respectively arranged on the right sides of the upper clamping block and the lower clamping block, a first positioning groove is arranged at the bottom end of the upper clamping block, a second positioning groove is arranged at the top end of the lower clamping block, and the first positioning groove and the second positioning groove are correspondingly arranged up and down.
7. The apparatus for testing the cracking resistance of a rubber material of claim 6, wherein said fixing member comprises a snap fastener provided on the upper clamping block and a snap fastener fixing structure provided on the lower clamping block.
8. The device for testing the cracking resistance of the rubber material according to claim 1, wherein an air inlet chamber is arranged on the left side of the heat source, an air outlet chamber is arranged on the right side of the heat source, an axial flow fan and an electric heating tube are arranged between the air inlet chamber and the air outlet chamber, an air inlet is arranged on the air inlet chamber, and the heat supply branch pipe, the second heat supply side pipe and the first heat supply side pipe are all communicated with the air outlet chamber.
9. The apparatus for testing the cracking resistance of a rubber material of claim 1, wherein the outer wall of the aging oven is coated with a heat insulating material.
10. The apparatus for testing the cracking resistance of a rubber material as defined in claim 8, wherein the electrical heating tube extends in a direction perpendicular to the direction of the wind flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619299.2A CN107247066B (en) | 2017-07-26 | 2017-07-26 | Device for testing cracking resistance of rubber material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619299.2A CN107247066B (en) | 2017-07-26 | 2017-07-26 | Device for testing cracking resistance of rubber material |
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| Publication Number | Publication Date |
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| CN107247066A CN107247066A (en) | 2017-10-13 |
| CN107247066B true CN107247066B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710619299.2A Active CN107247066B (en) | 2017-07-26 | 2017-07-26 | Device for testing cracking resistance of rubber material |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163969A (en) * | 2018-09-03 | 2019-01-08 | 河南检亿科技有限公司 | A kind of device for the test of wire and cable cracking resistance |
| CN117309754B (en) * | 2023-11-30 | 2024-02-02 | 深圳市通泰盈科技股份有限公司 | Test device and test method for high-temperature and high-humidity aging resistance of adhesive tape |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024490A1 (en) * | 2000-05-20 | 2002-01-17 | Klaus Nonnenmacher | Clamp for dynamic ageing testing of rubbers and elastomers in ozone gas comprises parallel discs, one with a cam for extending test pieces |
| CN202974780U (en) * | 2012-12-20 | 2013-06-05 | 苏州希普拉斯新材料有限公司 | Anti-cracking test device for rubber-plastic materials |
| CN203688695U (en) * | 2013-12-31 | 2014-07-02 | 江苏省产品质量监督检验研究院 | Hot air ageing oven used for cable |
| CN207114460U (en) * | 2017-07-26 | 2018-03-16 | 核工业理化工程研究院 | A kind of device for testing elastomeric material anti-cracking performance |
-
2017
- 2017-07-26 CN CN201710619299.2A patent/CN107247066B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024490A1 (en) * | 2000-05-20 | 2002-01-17 | Klaus Nonnenmacher | Clamp for dynamic ageing testing of rubbers and elastomers in ozone gas comprises parallel discs, one with a cam for extending test pieces |
| CN202974780U (en) * | 2012-12-20 | 2013-06-05 | 苏州希普拉斯新材料有限公司 | Anti-cracking test device for rubber-plastic materials |
| CN203688695U (en) * | 2013-12-31 | 2014-07-02 | 江苏省产品质量监督检验研究院 | Hot air ageing oven used for cable |
| CN207114460U (en) * | 2017-07-26 | 2018-03-16 | 核工业理化工程研究院 | A kind of device for testing elastomeric material anti-cracking performance |
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| CN107247066A (en) | 2017-10-13 |
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