CN209841412U - A adhesive tape sample sampling device for bonding structure aging testing - Google Patents
A adhesive tape sample sampling device for bonding structure aging testing Download PDFInfo
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- CN209841412U CN209841412U CN201920526995.3U CN201920526995U CN209841412U CN 209841412 U CN209841412 U CN 209841412U CN 201920526995 U CN201920526995 U CN 201920526995U CN 209841412 U CN209841412 U CN 209841412U
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- frame
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- adhesive tape
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- groove
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Abstract
The utility model discloses an adhesive tape sample sampling device for bonding structure aging testing, include: one end of the first frame is vertically provided with a first bulge, the other end of the first frame is vertically provided with a first groove, and the middle part of the first frame is sunken towards the inner side; one end of the second frame is vertically provided with a second groove, the other end of the second frame is vertically provided with a second bulge, and the middle part of the second frame is sunken towards the inner side; the first frame and the second frame are detachably connected to form a whole frame; the first slot opening position is formed in the side faces of the inner side and the outer side of the first frame and the second frame; the second slotting position is positioned below the upper slotting; and the reserved holes are respectively arranged at two ends of the first slot opening position and the second slot opening position. The problem that the existing car window bonding structure is difficult to sample under the natural aging condition can be solved.
Description
Technical Field
The utility model relates to an adhesive tape sample sampling device for bonding structure aging property is experimental belongs to bonding structure test and technical field.
Background
With the continuous development of new industrial materials, new technology and light weight, the application of the bonding technology is widely applied. The adhesive is mainly divided into an elastic adhesive and a structural adhesive, and the elastic adhesive is mainly used for high-speed rail vehicle windows. By using the bonding technique, the connection between the dissimilar materials can be achieved, enhancing the rigidity, durability and impact resistance of the connection structure. The bonding technology is applied to the car body, so that the driving comfort can be improved, the noise in the car can be reduced, the vibration can be reduced, the weight can be reduced, the energy consumption can be reduced, the process can be simplified, the product quality can be improved, and the effect which is difficult to achieve by methods such as welding, riveting and the like can be achieved.
The high-speed motor train unit train needs to adapt to a complex service environment in the use process, so that the bonding structure applied to the body of the high-speed motor train unit train is often under the action of complex environmental factors (temperature and humidity). The bonding performance of the adhesive is obviously influenced by the environment (temperature and humidity), and the aging phenomenon can occur in the long-term use process, so that the bonding structure performance is reduced, and the application of the bonding technology in the vehicle body connection is hindered to a great extent.
Under the technical background, the natural environment aging test of the adhesive is particularly necessary, the aging performance of the existing actual vehicle window bonding structure is difficult to test under the natural aging condition, and because the adhesive tape after natural aging needs to be cut from the vehicle window bonding structure during the overhaul of a high-speed motor train unit running for a certain mileage, the integrity of the adhesive tape is difficult to guarantee during cutting, and dumbbell-shaped test pieces with uniform size, uniform thickness and no damage are difficult to manufacture. The stress-strain curve, the tensile strength and other mechanical performance parameters obtained by using the dumbbell-shaped adhesive tape for adhesive tape strength test have great errors, and the aging failure behavior of the adhesive structure cannot be evaluated through a subsequent aging failure test to judge whether the adhesive structure is safe or not. Based on the circumstances above, the utility model provides a testing arrangement convenient to natural aging tests sample piece cutting perfects the not enough of current sample piece preparation.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a developed an adhesive tape sample sampling device for bonding structure aging property is experimental, can overcome current real car door window bonding structure and take a sample the difficulty under the natural aging condition, can't guarantee the complete and sample precision of sample, influence the problem of follow-up test result.
The utility model provides a technical scheme does:
a adhesive tape sample sampling device for bonding structure aging performance test includes:
one end of the first frame is vertically provided with a first bulge, the other end of the first frame is vertically provided with a first groove, and the middle part of the first frame is sunken towards the inner side;
one end of the second frame is vertically provided with a second groove, the other end of the second frame is vertically provided with a second bulge, and the middle part of the second frame is sunken towards the inner side;
the first bulge is matched with the second groove, and the first groove is matched with the second bulge, so that the first frame and the second frame are detachably connected to form a whole frame;
the first slot opening position is formed in the side faces of the inner side and the outer side of the first frame and the second frame;
the second slotting position is arranged at an interval with the first slotting position;
and the reserved holes are respectively arranged at two ends of the first slot opening position and the second slot opening position.
Preferably, the prepared hole is tangential to the grooving position.
Preferably, the method further comprises the following steps:
and the two connecting plates are detachably arranged outside the two end surfaces of the integral frame.
Preferably, the spacing is 2 mm.
Preferably, the whole periphery of the frame is coated with a teflon coating.
Preferably, the frame is of a dumbbell-shaped structure as a whole.
Preferably, scales are arranged on the tops of the first frame and the second frame.
Beneficial effect:
1. when the rubber coating is installed on the windows of the high-speed motor train unit, the dumbbell-shaped test pieces required by the test are prepared in an embedded mode, when the residual strength of the naturally aged rubber strips needs to be tested, the test pieces are taken down at the embedded positions around the windows, and the test pieces with higher size precision are directly obtained through simple cutting treatment.
2. The conditions that the sizes of the existing manual cut pieces are not uniform and the thicknesses are not uniform are avoided by adopting a pre-buried test piece mode, the obtained test sample can be directly tested, and the mechanical properties of the material can be accurately described.
4. The device can overcome the defect that a test piece is difficult to cut in a life prediction test, a test piece with standard required size and smooth and complete surface is designed, the subsequent prediction and evaluation of the natural aging failure behavior of the window bonding structure are facilitated, and the device provides experimental and theoretical support for the strength design of the window bonding structure of the high-speed motor train unit.
5. The connecting plate is connected with the left part and the right part of the sampling device body through the outer hexagon screws, and compared with screws with other structures such as cross screws, the colloid is easy to clean after the nuts of the outer hexagon screws are covered by the colloid, and the outer hexagon screws can be conveniently screwed out.
Drawings
Figure 1 is the window form assembly schematic diagram of high-speed railway door window of the utility model.
FIG. 2 is an axonometric view of an adhesive tape sample sampling device for bonding structure aging performance test.
Fig. 3 is an explosion diagram of the adhesive tape sample sampling device for the aging performance test of the bonding structure.
Fig. 4 is a front view of the adhesive tape sample sampling device for the aging performance test of the bonding structure of the present invention.
Fig. 5 is a top view of the adhesive tape sample sampling device for the aging performance test of the bonding structure of the present invention.
Fig. 6 is a left side view of the adhesive tape sample sampling device for the aging performance test of the bonding structure of the present invention.
Fig. 7 is a cross-sectional view a-a in fig. 5 of the adhesive tape sample sampling device for the aging performance test of the bonding structure according to the present invention.
Fig. 8 is a geometric model diagram of the window body of the high-speed rail window of the present invention.
Fig. 9 is a pre-buried position elevation view of an adhesive tape sample and a sampling device for the aging performance test of the bonding structure.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in FIGS. 1-9, the utility model provides an adhesive tape sample sampling device for bonding structure aging testing, include: window 100, sampling device 200, left frame 210, second frame 260, first slot opening 230, second slot opening 260, prepared holes 280a, 280b and connecting plate 240.
The sampling device 200 is pre-embedded in the bonding structure of the window body 100, the window body 100 of the high-speed rail car window adopts double-layer glass and is composed of two or more layers of common flat glass, 110 is the outer glass of the window body assembly, 120 is colloid (namely the embedding position of the sampling device), 130 is the window frame structure, and 140 is the inner glass of the window body assembly. The periphery of the glass is bonded and sealed with two or more pieces of glass, sealing strips and glass strips by using a high-strength and high-airtightness composite binder, the middle of the glass is filled with dry gas, and a frame is filled with a drying agent so as to ensure the air dryness between the glass pieces.
The sampling device comprises: the first frame 210 and the second frame 260, the first frame 210 and the second frame 260 are arranged oppositely, one end of the first frame 210 is vertically provided with a first protrusion, the other end of the first frame 210 is provided with a first groove, one end of the second frame 260 is vertically provided with a second groove, the other end of the second frame 260 is vertically provided with a second protrusion, the first protrusion is matched with the second groove, the first groove is matched with the second protrusion, and the first frame and the second frame are detachably connected to form a whole frame. The middle parts of the first frame 210 and the second frame 260 are both concave inwards, so that the whole frame is in a dumbbell-shaped structure.
The two ends of the whole frame are also provided with connecting plates 250, and the connecting plates 250 are detachably connected with the whole frame through screws 240. Screw holes are arranged at two ends of the whole frame, and the screws 240 and the screw holes are in interference fit for preventing uncured alternate invasion. The first frame 230 and the second frame 260 are coupled by the grooves and the protrusions to restrict the degree of freedom in the length direction thereof, and coupled by the coupling plate 250 and the screws 240 to restrict the degree of freedom in the width direction thereof.
On the top terminal surface of first frame 210 and second frame 260, all be provided with scale mark 220, the both ends symmetry setting of first frame 210 and second frame 260 is followed to the scale mark, and the distance between both ends scale mark 220 is greater than the length of required appearance piece, utilizes the scale mark to carry out length direction's size location, makes things convenient for the sample cutting. In the inside and outside both sides of first frame 210 and second frame 260, all be provided with first trench 230 and second trench 260, stagger from top to bottom first trench 230 and second trench 260 to the interval between first trench 230 and the second trench 260 is 2mm, and along sampling device 2mm lateral wall all around, do not include upper and lower surface, the coating has the teflon coating, adhesion between colloid and the sampling device when preventing to peel off. In order to ensure the continuity of the rubber strip, the top and the bottom of the sampling device are not subjected to Teflon coating treatment.
The plurality of reserved holes are arranged at two ends of the first slot opening position 230 and the second slot opening position 260, the first reserved holes 280a are arranged at two ends of the first slot opening position 230, the second reserved holes 280b are arranged at two ends of the second slot opening position 260, the centers of circles of the first reserved holes 280a and the second reserved holes 280b are not on the same horizontal line with the first slot opening position 230 and the second slot opening position 260, the first reserved holes 280a are tangent to the edge of the first slot opening position, the center of circle of the first reserved holes 280a is located below the first slot opening position 230, the center of circle of the second reserved holes 280b is tangent to the edge of the second slot opening position 260, and the center of circle of the second reserved holes 280b is located above the first slot opening position 260.
The first slot 230 and the second slot 260 are staggered in the length direction, so that the rigidity of the weak connection part is improved. The length of the slot is greater than the length of the sample to be taken.
The utility model discloses in, as an optimization, sampling device's material chooses for use the mould steel, compares in aluminum alloy mold, and mould steel wearability is good, mirror polishing performance is good, hardness is high, longe-lived, and the cost is also less than the aluminum alloy material. The surface roughness should be greater than rz0.8, so the mold must go through grinding and polishing processes.
The sampling process of the adhesive tape specifically comprises the following steps:
step 1, cutting the outline of a sampling device;
when the three-stage repair, the four-stage repair and the five-stage repair of the operation mileage of the vehicle bonding structure are required to be provided, the general outline of the pre-buried sampling device is cut out in the sealant of the glass window and the window frame by a cutter, the cutting is necessary to cut according to the outline of the mold, the cutting is avoided from cutting into the sample part of the adhesive tape in the sampling device when the cutter is put down, the excessive adhesive tapes on the upper top surface and the lower bottom surface are cut off along the edges of the top part and the bottom part of the mold after the sample is taken out, the adhesive tapes on the periphery of the mold are scraped off completely by a scraper;
step 2, positioning the sampling device and then drilling;
placing the taken complete sampling device on a leveling test bed, and reinforcing the sampling device to ensure that a workpiece is stable in the drilling process; when drilling is started, firstly, a micro centering drill with good rigidity is used for drilling an initial hole with the depth of 1-2 times of the diameter, the drill point apex angle of the centering drill is equal to or larger than the micro drill apex angle of the final drilling hole, if the apex angle of the centering drill is smaller, then when the micro drill is cut, two cutting edges firstly contact a workpiece than the apex, the deviation of the hole is easy to increase, then the micro drill is held to penetrate a reserved hole from one side of a sampling device to the other side, a step-by-step drilling sequence is adopted in the drilling process, namely, the drill is periodically withdrawn, the blockage of colloid powder is prevented, and a large amount of fine powdery materials generated by colloid in the drilling process can be subjected to chip removal by adopting a compressed air method. At the beginning and end of drilling, the feed should be reduced 1/3 to eliminate centering errors;
and 3, cutting a sample in the sampling device, after four reserved holes on two sides of the sampling device are drilled completely, extending one end of an ultrafine diamond wire or a steel saw blade into the drilled hole to cut the upper and lower slotted positions of the die along the length direction of the die respectively, and cutting out a sample with the thickness of 2mm of the rubber strip in the middle of the die, wherein the thickness and the width of the rubber strip are standard required sizes. And cutting and positioning in the length direction by using scale marks on the top surface of the die, aligning the steel ruler with the scale marks on the left side and the right side, and cutting colloid in the length direction by using a sharp nicking tool along the aligned steel ruler to obtain the standard sample required by the test size.
Step four: take out the sample, the standard sample that the cutting finishes is embedded in the sampling device colloid, for taking out the sample, unscrew sampling device both sides screw 240, connect 250 boards and lift off, remove sampling device width direction degree of freedom, make the colloid expose through recess and protruding separation with first frame and 210 second frame 260 afterwards, tear top layer and bottom adhesive tape with tweezers, peel off the unnecessary colloid of both sides, take out the experimental adhesive tape of middle part 2 mm.
Having disclosed the above, it is not limited solely to the use set forth in the specification and the embodiments, but it is to be understood that the same is capable of numerous modifications and that other modifications may readily occur to those skilled in the art, and that the invention is not limited to the specific details and illustrations contained herein, without departing from the general concept as defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a rubber strip sample sampling device for bonding structure aging testing which characterized in that includes:
one end of the first frame is vertically provided with a first bulge, the other end of the first frame is vertically provided with a first groove, and the middle part of the first frame is sunken towards the inner side;
one end of the second frame is vertically provided with a second groove, the other end of the second frame is vertically provided with a second bulge, and the middle part of the second frame is sunken towards the inner side;
the first bulge is matched with the second groove, and the first groove is matched with the second bulge, so that the first frame and the second frame are detachably connected to form a whole frame;
the first slot opening position is formed in the side faces of the inner side and the outer side of the first frame and the second frame;
the second slotting position is arranged at an interval with the first slotting position;
and the reserved holes are respectively arranged at two ends of the first slot opening position and the second slot opening position.
2. The adhesive tape sample sampling device for the aging performance test of the bonded structure as claimed in claim 1, wherein the prepared hole is tangent to the groove.
3. The strip specimen sampling device for bonded structure aging testing of claim 2, further comprising:
and the two connecting plates are detachably arranged outside the two end surfaces of the integral frame.
4. The strip specimen sampling device for bonded structure aging testing of claim 3, wherein the interval is 2 mm.
5. The strip sampling apparatus for bonded structure aging testing of claim 4, wherein the frame is coated with Teflon coating on the whole periphery.
6. The adhesive tape sample sampling device for the aging performance test of the bonded structure as recited in claim 5, wherein the frame is a dumbbell-shaped structure as a whole.
7. The adhesive tape sample sampling device for the aging performance test of the bonded structure as claimed in claim 6, wherein the top of the first frame and the second frame are provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526995.3U CN209841412U (en) | 2019-04-18 | 2019-04-18 | A adhesive tape sample sampling device for bonding structure aging testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526995.3U CN209841412U (en) | 2019-04-18 | 2019-04-18 | A adhesive tape sample sampling device for bonding structure aging testing |
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| Publication Number | Publication Date |
|---|---|
| CN209841412U true CN209841412U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920526995.3U Withdrawn - After Issue CN209841412U (en) | 2019-04-18 | 2019-04-18 | A adhesive tape sample sampling device for bonding structure aging testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209841412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900514A (en) * | 2019-04-18 | 2019-06-18 | 吉林大学 | A kind of adhesive tape sample sampling device and sampling method and the pre-buried method for optimizing position of adhesive tape for the test of bonded structure ageing properties |
-
2019
- 2019-04-18 CN CN201920526995.3U patent/CN209841412U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900514A (en) * | 2019-04-18 | 2019-06-18 | 吉林大学 | A kind of adhesive tape sample sampling device and sampling method and the pre-buried method for optimizing position of adhesive tape for the test of bonded structure ageing properties |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191224 Effective date of abandoning: 20200624 |