CN108716968A - A kind of test device and its test method of test hot melt adhesive air-tightness - Google Patents
A kind of test device and its test method of test hot melt adhesive air-tightness Download PDFInfo
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- CN108716968A CN108716968A CN201810496176.9A CN201810496176A CN108716968A CN 108716968 A CN108716968 A CN 108716968A CN 201810496176 A CN201810496176 A CN 201810496176A CN 108716968 A CN108716968 A CN 108716968A
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- Prior art keywords
- hot melt
- melt adhesive
- test
- attaching nut
- test device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to a kind of test devices and its test method of test hot melt adhesive air-tightness, has hollow attaching nut by melt viscosity on bottom plate, it is installed with limit ball in hollow attaching nut, screw rod is bolted on hollow attaching nut, and screw rod lower end supports on limit ball；The upper limit bit slice of hollow attaching nut's up stroke can be limited by being equipped with by limiting bracket on bottom plate；Test device further includes L-type spanner, L-type spanner is equipped with outer-hexagonal flange, interior hexagonal groove is equipped in the nut of the screw rod upper end, and outer-hexagonal flange is inserted into interior hexagonal groove, screw rod and hollow attaching nut can be made while rotate by pulling L-type spanner, and hot melt adhesive is made to be stretched by twisting resistance；Test device further includes the gas-tpe fitting that can be sealedly connected on hollow attaching nut, and the gas-tpe fitting is connect by tracheae with air source.The present invention can test the air-tightness of hot melt adhesive.
Description
Technical field：
The present invention relates to hot melt adhesive testing field, more particularly to a kind of test dress of test hot melt adhesive air-tightness
It sets and its test method.
Background technology：
Polyurethane hot melt does not contain water and solvent, and solid content 100% is a kind of high-performance environment protection type adhesive, it is suitable
The needs increasingly paid attention to environment both at home and abroad are answered.Polyurethane hot melt is to move raw material feeding double-planet in preparation process
It mixed, reacted in power mixing machine, being disperseed, being dissolved, homogeneous, the techniques such as emulsification are prepared into hot melt adhesive, the hot melt adhesive after being made
Have many advantages, such as positioning fast, adhesive strength height, tensile strength height, excellent spring, wear-resisting, oil resistant and cold-resistant.But in the prior art
Hot melt adhesive is all solid-state, is all when in use after requiring heat to temperature in use, then solidification is adhered at room temperature, to hot melt
There is no measurement standards in the prior art for the air-tightness of glue in use, i.e., to the retractility of hot melt adhesive sometimes for fixed
Property measure, just need to detect the degree of its stroke by testing the air-tightness of hot melt adhesive at this time, ensure the use of hot melt adhesive
Safety.
Invention content：
The purpose of the present invention is in view of the deficiencies of the prior art, it is airtight that the first purpose is to provide a kind of test hot melt adhesive
Property test device, the second purpose be to provide it is a kind of test hot melt adhesive air-tightness test method, can detect stretch after heat
Melten gel whether gas leakage, device is simple, easy to operate.
The technology solution of the present invention is as follows：
A kind of test device of test hot melt adhesive air-tightness, including bottom plate, by melt viscosity with sky on the bottom plate
Heart attaching nut is installed with limit ball in the hollow attaching nut, screw rod, and spiral shell is bolted on the hollow attaching nut
Bar lower end supports on limit ball；Hollow attaching nut's up stroke can be limited by being equipped with by limiting bracket on the bottom plate
Upper limit bit slice；Test device further includes L-type spanner, and L-type spanner is equipped with outer-hexagonal flange, in the nut of the screw rod upper end
Equipped with interior hexagonal groove, and outer-hexagonal flange is inserted into interior hexagonal groove, and screw rod and hollow company can be made by pulling L-type spanner
Connected nut rotates simultaneously, and hot melt adhesive is made to be stretched by twisting resistance；Test device further includes that can be sealedly connected on hollow connection
Gas-tpe fitting on nut, the gas-tpe fitting are connect by tracheae with air source.Test device further includes that hot melt adhesive is enable to reach
To use temperature range test box and for detect hot melt adhesive whether the detection agent storage box of gas leakage.
Preferably, the bottom plate is square plate or round tablet.
Preferably, the upper end of the hollow attaching nut is equipped with epitaxy part, the upper surface of epitaxy part is plane.
Preferably, the limiting bracket is 2~4 groups of limited post being fixed on bottom plate, it is fixed on limited post
Banking stop, upper limit bit slice are limited circle of position ring, and the internal diameter for limiting annulus is more than the Major Diam of hollow attaching nut, limits annulus
Internal diameter be less than epitaxy part outer diameter.
Preferably, the limit ball is put into hollow attaching nut, and the lower end for limiting ball contradicts bottom plate.
Using a kind of method that the test device of test hot melt adhesive air-tightness tests the air-tightness of hot melt adhesive, including
Following steps：
(1) circular hot melt adhesive is sprayed on bottom plate with dispenser, hollow attaching nut is placed in hot melt adhesive and waits for heat
Melten gel solidification makes hollow attaching nut be adhered on bottom plate, and the thickness of hot melt adhesive is 0.5~1.5mm after solidification；
(2) limit ball is put into hollow attaching nut, screw rod is screwed in hollow company by limit ball lower end contact base plate
In connected nut, and the lower end of screw rod supports on limit ball；
(3) L-type spanner is inserted into screw rod, continues rotary screw, makes screw rod and hollow attaching nut while rotating, make heat
Melten gel is stretched by twisting resistance；Thickness after hot melt adhesive stretches will increase the 40~50% of hot melt adhesive original depth；Hot melt
Glue stretching can force hollow attaching nut to rise, and the up stroke of hollow attaching nut is limited by upper limit bit slice；
(4) test device is put into test box, test device is warming up to 65 DEG C~85 DEG C, so that hot melt adhesive is in and use
In temperature range, test device is then cooled down to room temperature；
(5) test device is taken out from test box, lays down screw rod, and limit ball is poured out, it is close on hollow attaching nut
Envelope is connected with gas-tpe fitting, and gas-tpe fitting is connect by tracheae with air source；
(6) test device for being connected with gas-tpe fitting is placed into detection agent storage box, after ventilation, is detected by observing
Whether have bubble in agent storage box detect stretch after hot melt adhesive whether gas leakage.
Preferably, the detection agent storage box is to fill with the babinet of water.
Preferably, being connected and sealed equipped with sealing ring between the hollow attaching nut and gas-tpe fitting.
The beneficial effects of the present invention are：
The present invention is the air tightness detection equipment of hot melt adhesive, and structure design advantages of simple, gas-tpe fitting can be tightly connected
On hollow attaching nut, the gas-tpe fitting is connect by tracheae with air source, due to having sky by melt viscosity on bottom plate
Heart attaching nut, then will be placed in detection agent storage box without the test device of screw rod and ball, full inspection quality is improved, it is perfect
The detection method of hot melt adhesive.The air-tightness of hot melt adhesive is detected using the above method, realizes the comprehensive inspection of hot melt adhesive air-tightness
It surveys, improves the detection efficiency of hot melt adhesive, improve the security performance that hot melt adhesive uses.
Description of the drawings：
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram after the hot melt adhesive of the present invention stretches；
Structural schematic diagram when Fig. 3 is present invention connection gas-tpe fitting；
In Fig. 1~3：1-bottom plate；2-hot melt adhesive；3-hollow attaching nuts；301-epitaxy parts；4-limit balls；
5-screw rods；6-limiting brackets；7-upper limit bit slices；8-L-type spanners；9-gas-tpe fittings；10-tracheaes；11-air sources 12-
Sealing ring.
Specific implementation mode：
Embodiment is shown in that attached drawing 1~3, a kind of test device of test hot melt adhesive air-tightness, including bottom plate 1, the bottom plate are
Square plate or round tablet.The present embodiment uses square plate
Hollow attaching nut 3 is stained with by hot melt adhesive 2 on the bottom plate, hot melt adhesive 2 is polyurethane hot melt, is had
Positioning is fast, adhesive strength height, tensile strength height, excellent spring, wear-resisting, oil resistant and it is cold-resistant the advantages that.The hollow attaching nut
It is inside installed with limit ball 4, screw rod 5 is bolted on the hollow attaching nut, and screw rod lower end supports on limit ball；Institute
State the upper limit bit slice 7 for being equipped with by limiting bracket 6 on bottom plate and capable of limiting hollow attaching nut's up stroke.
Test device further includes L-type spanner 8, and L-type spanner is equipped with outer-hexagonal flange, is set in the nut of the screw rod upper end
There is interior hexagonal groove, and outer-hexagonal flange is inserted into interior hexagonal groove, screw rod and hollow connection can be made by pulling L-type spanner
Nut rotates simultaneously, and hot melt adhesive is made to be stretched by twisting resistance；Test device further includes that can be sealedly connected on hollow connection spiral shell
Gas-tpe fitting 9 on mother, the gas-tpe fitting are connect by tracheae 10 with air source 11.The hollow attaching nut and gas-tpe fitting
Between be connected and sealed equipped with sealing ring 12, prevent the phenomenon that leaks air in detection process.
Test device further includes that hot melt adhesive is enable to reach the test box of use temperature range and be for detecting hot melt adhesive
The detection agent storage box of no gas leakage, test box are arranged to make hot melt adhesive reach temperature in use two, and the use of hot melt adhesive is simulated
Environment ensures that the normal use of hot melt adhesive, the detection agent storage box are to fill with the babinet of water.
The upper end of the hollow attaching nut is equipped with epitaxy part 301, and the upper surface of epitaxy part is plane.When hot melt adhesive stretches
After force hollow attaching nut to rise, supported by epitaxy part and limited below upper limit piece, be also convenient for detecting in this way
The stretching height of hot melt adhesive.
The limiting bracket is 2 groups of limited post being fixed on bottom plate, limited post it is height-adjustable, be convenient for inspection in this way
Survey the stroke of different types of hot melt adhesive；It is fixed with upper limit bit slice on limited post, upper limit bit slice is limited circle of position ring, and limits circle
The internal diameter of ring is more than the Major Diam of hollow attaching nut, and the internal diameter for limiting annulus is less than the outer diameter of epitaxy part.
Using a kind of method that the test device of test hot melt adhesive air-tightness tests the air-tightness of hot melt adhesive, including
Following steps：
(1) circular hot melt adhesive profile is sprayed on bottom plate with dispenser, hollow attaching nut is placed in hot melt adhesive
Adhesive curing to be heated makes hollow attaching nut be adhered on bottom plate, and the thickness of hot melt adhesive is 1mm after solidification.
(2) limit ball is put into hollow attaching nut, screw rod is screwed in hollow company by limit ball lower end contact base plate
In connected nut, and the lower end of screw rod supports on limit ball；Hot melt adhesive not tension stretch at this time；As shown in Fig. 1.
(3) and then by L-type spanner it is inserted into screw rod, continues rotary screw, make screw rod and hollow attaching nut while rotating,
Hot melt adhesive is set to be stretched by twisting resistance；Thickness after hot melt adhesive stretches will increase the 40~50% of hot melt adhesive original depth；
The amount of tension in the present embodiment being hot melt adhesive is 0.5mm, and hot melt adhesive stretching can force hollow attaching nut to rise, and pass through the upper limit
Bit slice limits the up stroke of hollow attaching nut；As shown in Fig. 2.
(4) the entire test device of step (3) is put into test box, test device is warming up to 70 DEG C, makes hot melt adhesive
In use temperature range, test device is then cooled down to room temperature；Hot melt adhesive after stretching is subjected to above-mentioned processing, it can
The use environment for enough simulating hot melt adhesive, so as to detect in actual use, that is, the air-tightness of the hot melt adhesive after stretching.
(5) test device is taken out from test box, lays down screw rod, and limit ball is poured out, it is close on hollow attaching nut
Envelope is connected with gas-tpe fitting, and gas-tpe fitting is connect by tracheae with air source；As shown in Fig. 3, since hot melt adhesive has elasticity, this
When hollow attaching nut upper end will not support in upper limit on piece.
(6) test device for being connected with gas-tpe fitting is placed into detection agent storage box, after ventilation, is detected by observing
Whether have bubble in agent storage box detect stretch after hot melt adhesive whether gas leakage.
Above-described embodiment is the specific descriptions carried out to the present invention, and only invention is further explained, Bu Nengli
Solution is limiting the scope of the present invention, and it is nonessential that those skilled in the art according to the content of foregoing invention makes some
Modifications and adaptations are each fallen within protection scope of the present invention.
Claims (8)
1. a kind of test device of test hot melt adhesive air-tightness, it is characterised in that：Including bottom plate, pass through hot melt adhesive on the bottom plate
It is stained with hollow attaching nut, limit ball is installed in the hollow attaching nut, is bolted on the hollow attaching nut
Screw rod, and screw rod lower end supports on limit ball；Hollow connection can be limited by being equipped with by limiting bracket on the bottom plate
The upper limit bit slice of nut up stroke；
Test device further includes L-type spanner, and L-type spanner is equipped with outer-hexagonal flange, is equipped in the nut of the screw rod upper end interior
Hexagonal groove, and outer-hexagonal flange is inserted into interior hexagonal groove, screw rod and hollow attaching nut can be made by pulling L-type spanner
It rotates simultaneously, hot melt adhesive is made to be stretched by twisting resistance；
Test device further includes the gas-tpe fitting that can be sealedly connected on hollow attaching nut, and the gas-tpe fitting passes through tracheae
It is connect with air source；
Test device further includes that hot melt adhesive is enable to reach the test box of use temperature range and for detecting whether hot melt adhesive leaks
The detection agent storage box of gas.
2. a kind of test device of test hot melt adhesive air-tightness according to claim 1, it is characterised in that：The bottom plate is
Square plate or round tablet.
3. a kind of test device of test hot melt adhesive air-tightness according to claim 1, it is characterised in that：The hollow company
The upper end of connected nut is equipped with epitaxy part, and the upper surface of epitaxy part is plane.
4. a kind of test device of test hot melt adhesive air-tightness according to claim 3, it is characterised in that：The limit branch
Frame is 2~4 groups of limited post being fixed on bottom plate, is fixed with upper limit bit slice on limited post, and upper limit bit slice is limited circle of position ring, and
The internal diameter for limiting annulus is more than the Major Diam of hollow attaching nut, and the internal diameter for limiting annulus is less than the outer diameter of epitaxy part.
5. a kind of test device of test hot melt adhesive air-tightness according to claim 1, it is characterised in that：The limit circle
Ball is put into hollow attaching nut, and the lower end for limiting ball contradicts bottom plate.
6. as used a kind of test device of test hot melt adhesive air-tightness described in claim 1 to carry out the air-tightness of hot melt adhesive
The method of test, it is characterised in that：Include the following steps：
(1) circular hot melt adhesive is sprayed on bottom plate with dispenser, hollow attaching nut is placed in hot melt adhesive and waits for hot melt adhesive
Solidification makes hollow attaching nut be adhered on bottom plate, and the thickness of hot melt adhesive is 0.5~1.5mm after solidification；
(2) limit ball is put into hollow attaching nut, screw rod is screwed in hollow connection spiral shell by limit ball lower end contact base plate
In mother, and the lower end of screw rod supports on limit ball；
(3) L-type spanner is inserted into screw rod, continues rotary screw, makes screw rod and hollow attaching nut while rotating, make hot melt adhesive
It is stretched by twisting resistance；Thickness after hot melt adhesive stretches will increase the 40~50% of hot melt adhesive original depth；Hot melt adhesive is drawn
Stretching can force hollow attaching nut to rise, and the up stroke of hollow attaching nut is limited by upper limit bit slice；
(4) test device is put into test box, test device is warming up to 65 DEG C~85 DEG C, hot melt adhesive is made to be in temperature in use
In range, test device is then cooled down to room temperature；
(5) test device is taken out from test box, lays down screw rod, and limit ball is poured out, the company of sealing on hollow attaching nut
It is connected to gas-tpe fitting, gas-tpe fitting is connect by tracheae with air source；
(6) test device for being connected with gas-tpe fitting is placed into detection agent storage box, after ventilation, is deposited by observing detection agent
Whether have bubble in storage tank detect stretch after hot melt adhesive whether gas leakage.
7. the method that test device according to claim 6 tests the air-tightness of hot melt adhesive, it is characterised in that：Institute
It is to fill with the babinet of water to state detection agent storage box.
8. the method that test device according to claim 6 tests the air-tightness of hot melt adhesive, it is characterised in that：Institute
It states and is connected and sealed equipped with sealing ring between hollow attaching nut and gas-tpe fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496176.9A CN108716968A (en) | 2018-05-22 | 2018-05-22 | A kind of test device and its test method of test hot melt adhesive air-tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496176.9A CN108716968A (en) | 2018-05-22 | 2018-05-22 | A kind of test device and its test method of test hot melt adhesive air-tightness |
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| Publication Number | Publication Date |
|---|---|
| CN108716968A true CN108716968A (en) | 2018-10-30 |
Family
ID=63900294
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810496176.9A Pending CN108716968A (en) | 2018-05-22 | 2018-05-22 | A kind of test device and its test method of test hot melt adhesive air-tightness |
Country Status (1)
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| CN (1) | CN108716968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115901440A (en) * | 2022-10-26 | 2023-04-04 | 无锡车联天下信息技术有限公司 | Integrated assessment and detection machine for cementing quality and mechanical property and use method thereof |
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