CN113804551B - Equipment and method for testing tear resistance of silicone structural adhesive - Google Patents
Equipment and method for testing tear resistance of silicone structural adhesive Download PDFInfo
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- CN113804551B CN113804551B CN202111351527.5A CN202111351527A CN113804551B CN 113804551 B CN113804551 B CN 113804551B CN 202111351527 A CN202111351527 A CN 202111351527A CN 113804551 B CN113804551 B CN 113804551B
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 239000000853 adhesive Substances 0.000 title claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 43
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003595 mist Substances 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 66
- 229920001971 elastomer Polymers 0.000 claims description 37
- 239000013464 silicone adhesive Substances 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000012795 verification Methods 0.000 claims 1
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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- 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
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- 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
- G01N3/02—Details
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device and a method for testing the tear resistance of a silicone structural adhesive, and relates to the technical field of testing the tear resistance of the structural adhesive. According to the invention, the two test pieces are clamped by the clamping mechanism, the structural adhesive is filled between the two test pieces by the adhesive gun and the driving mechanism, and in the process of moving the driving mechanism, the triggering mechanism is driven to open the spraying mechanism, and hot water mist is sprayed on the structural adhesive, so that the solidification of the structural adhesive is accelerated, and the efficiency of detecting the anti-tear performance of the silicone structural adhesive is improved.
Description
Technical Field
The invention relates to the technical field of structural adhesive tear resistance inspection, in particular to equipment and a method for inspecting the tear resistance of a silicone structural adhesive.
Background
The high-performance silicone structural adhesive is a neutral-curing structural adhesive specially designed for structural bonding assembly in a building curtain wall. Can be easily extruded and used under wide air temperature conditions, and can be solidified into excellent, durable, high-modulus and high-elasticity silicone rubber by depending on moisture in the air.
The existing silicone structural adhesive needs to be tested for tear resistance before use, most of existing tear resistance devices pull two test pieces bonded by the silicone structural adhesive through two hydraulic cylinders, and the tear resistance of the silicone structural adhesive is calculated by recording the force applied by the hydraulic cylinders and the separation condition between the two test pieces; however, the two existing test pieces have long solidification time for the contacted silicone structural adhesive, and need to wait for a long time, so that the efficiency of detecting the tear resistance of the silicone structural adhesive is low.
Disclosure of Invention
The invention aims to solve the problems of the prior art, and provides a device and a method for testing the tear resistance of a silicone structural adhesive.
In order to achieve the purpose, the invention adopts the following technical scheme:
the equipment comprises a base, a clamping mechanism, a glue gun and a driving mechanism, wherein the clamping mechanism is arranged at the top of the base and used for clamping two test pieces, the glue gun is positioned right above the test pieces, the driving mechanism is used for driving the glue gun to glue, the top of the driving mechanism is connected with a support at the top of the base through an electric telescopic rod, a spraying mechanism used for accelerating structural glue solidification is obliquely arranged on the inner wall of the left side of the support, a triggering mechanism used for starting the spraying mechanism is arranged on the right side of the support, and the triggering mechanism is electrically connected with a control panel on the outer surface of the support;
the driving mechanism comprises a mounting box arranged at the bottom of the electric telescopic rod and a gear rotationally arranged in the mounting box, the lower part of the gear mounting shaft is connected with a lead screw through a coupler, the lower surface of the lead screw is in threaded connection with a sliding sleeve, a threaded hole screwed with the lead screw is formed in the sliding sleeve, the bottom of the sliding sleeve is in sliding connection with the inner wall of the glue gun, and the gear is driven by a motor;
the lower left end of the installation box is provided with an L-shaped connecting rod, the top of the glue gun is provided with an ear plate, and the ear plate is connected with the lower part of the L-shaped connecting rod in a front-back sliding manner;
a strip-shaped toothed plate is arranged on the right side of the installation box, a plurality of toothed blocks meshed with the gears are arranged on one side of the strip-shaped toothed plate, and through grooves used for the gears to move back and forth are formed in the upper end and the lower end of the installation box;
the trigger mechanism comprises a guide seat arranged on the right side of the support and a T-shaped sliding block arranged in the guide seat in a sliding manner, the left end of the T-shaped sliding block penetrates through the guide seat and is connected with a lug, a reset spring is arranged between the T-shaped sliding block and the inner wall of the guide seat, a pressure sensor in contact with the right side of the T-shaped sliding block is fixedly arranged on the inner wall, and the pressure sensor is electrically connected with the control panel;
a rotating rod is rotatably arranged on the right side of the L-shaped connecting rod, an L-shaped trigger plate abutted against the lug is arranged on the surface of the rotating rod, positioning cylinders in sliding connection with the upper end and the lower end of the rotating rod are respectively arranged on the top of the base and the right side of the bracket, and the open ends of the two positioning cylinders are close to each other;
the upper end and the lower end of the rotating rod are respectively provided with a protruding sliding rod, the two sliding rods and the L-shaped trigger plate are arranged on the same side of the rotating rod, and a special-shaped sliding groove matched with the sliding rods is formed in the positioning cylinder;
the special-shaped sliding grooves are vertical grooves arranged on the left side and the right side of the positioning cylinder and a C-shaped groove arranged between the two vertical grooves, the two vertical grooves are long and short, the tops of the two vertical grooves are flush, the C-shaped groove is obliquely arranged, the two ends of the C-shaped groove are communicated with the bottom of the vertical groove, and the long vertical grooves in the positioning cylinder on the upper portion of the rotating rod and the long vertical grooves in the positioning cylinder on the lower portion of the rotating rod are arranged in a left-right staggered mode;
clamping mechanism sets up two pneumatic cylinders at both ends about the base including the symmetry, two pneumatic cylinder looks near-end all is provided with the clamp splice that is used for pressing from both sides two test pieces, two the one end that the test piece deviates from each other is the T type setting, and the slip grafting around T type and the clamp splice inner wall, base middle part bilateral symmetry is provided with two backing plates that are used for placing the test piece.
Further, the spraying mechanism comprises a spraying head obliquely arranged on the left side of the support, the spraying head is communicated with hot water in the external water storage tank through an external water pump, the external water pump is electrically connected with the control panel, and the spraying head is obliquely downwards inclined from left to right.
Further, control panel embeds and is equipped with treater, relay and time-recorder, control panel surface is provided with display screen and keyboard, time-recorder, display screen and keyboard and treater electricity are connected, pressure sensor's output is connected with the input electricity of treater, the output of treater is connected with the input electricity of relay, the output of relay is connected with external water pump and pneumatic cylinder electricity respectively.
Further, the bottom of the motor is rotatably connected with the sliding plate, the left side and the right side of the bottom of the sliding plate are respectively rotatably provided with idler wheels, and the left side and the right side of the top of the installation box are respectively provided with a sliding rail for the idler wheels to slide.
Further, the sliding sleeve surface is provided with bellied bar guide block, bar guide block and the bar guide way sliding connection who beats the rifle inner wall of gluing.
Furthermore, an open slot for the rubber tube is formed in the left side of the glue spraying gun, and a through hole for leaking the rubber tube opening is formed in the bottom of the glue spraying gun.
Further, the bottom of the bump is provided with an inclined plane, and the inclined plane inclines upwards from right to left.
Further, the method for testing the tear resistance of the structural silicone adhesive comprises the following steps;
step S1: firstly, placing a rubber tube into a glue gun from the left side of the glue gun, and exposing an opening of the rubber tube from a through hole at the bottom of the glue gun;
step S2: the T-shaped ends of the two test pieces are respectively inserted into the two clamping blocks, and then the two hydraulic cylinders are synchronously started to extend to drive the two clamping blocks to be close to each other until the two test pieces are abutted;
step S3: presetting the spraying time of the spraying mechanism in the processor through a keyboard and a display screen;
step S4: starting the electric telescopic rod to extend, driving the glue gun to move downwards through the driving mechanism until the opening of the rubber tube in the glue gun is close to the butt joint of the two test pieces, starting the motor, driving the gear to rotate, driving the screw rod to rotate, further enabling the sliding sleeve at the bottom of the screw rod to slide downwards, and extruding the rubber tube in the glue gun, so that structural glue in the rubber tube is dripped at the butt joint of the two test pieces; the gear rotates, and meanwhile, the gear blocks crawl backwards on the strip-shaped toothed plate to further drive the glue gun to move backwards, the abutting positions of the two test pieces are filled with structural glue, and finally the motor is stopped;
step S5: starting the electric telescopic rod to shorten the electric telescopic rod and drive the driving mechanism to move upwards and reset;
wherein, in step S4: in the process that the driving mechanism moves downwards, the sliding rod on the upper portion of the rotating rod is firstly separated from the long vertical groove of the special-shaped sliding groove in the upper positioning cylinder, and along with the continuous downward movement of the driving mechanism, the sliding rod on the lower portion of the rotating rod firstly slides with the short vertical groove of the special-shaped sliding groove in the lower positioning cylinder and then slides into the inclined C-shaped groove to drive the L-shaped trigger plate on the surface of the rotating rod to rotate and approach the bump;
at step S5: in the process of moving the driving mechanism upwards, a sliding rod at the lower part of the rotating rod is separated from a long vertical groove of a special-shaped sliding groove at the lower part, so that the L-shaped trigger plate is contacted with the bump, the T-shaped sliding block is driven to slide rightwards to extrude a return spring, the T-shaped sliding block is driven to trigger the pressure sensor, then the pressure sensor sends a signal to the processor for processing, the processor starts the timer to count, an external water pump is controlled to be started at the same time, water mist is sprayed on the structural adhesive at the abutted part of the two test pieces, and the structural adhesive is accelerated to solidify; when the data in the timer is consistent with the preset numerical value, the processor sends an instruction to the relay to control the external water pump to be closed, and simultaneously controls the two hydraulic cylinders to be synchronously started to shorten, so that the two test pieces are pulled to deviate from each other, and the anti-tearing performance of the structural adhesive is detected;
step S6: when the rubber tube in the glue gun needs to be taken down, the reverse driving motor drives the gear to rotate, so that the sliding sleeve at the lower part of the screw rod is driven to move downwards to be separated from the rubber tube, and meanwhile, the gear resets along the forward movement of the strip-shaped toothed plate and is taken out from the open slot at the left side of the glue gun.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the two test pieces are clamped by the clamping mechanism, the structural adhesive is filled between the two test pieces by the adhesive gun and the driving mechanism, and in the process of moving the driving mechanism, the triggering mechanism is driven to open the spraying mechanism, and hot water mist is sprayed on the structural adhesive, so that the solidification of the structural adhesive is accelerated, and the efficiency of detecting the anti-tear performance of the silicone structural adhesive is improved.
Drawings
FIG. 1 is a schematic overall structure diagram of a testing device and a testing method for the tear resistance of a silicone structural adhesive according to the present invention;
FIG. 2 is a state diagram of the motion of FIG. 1;
FIG. 3 is a schematic structural diagram of a driving mechanism in the testing apparatus and the testing method for the tear resistance of the structural silicone adhesive according to the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a schematic structural diagram of a guide seat in the testing apparatus and the testing method for the tear resistance of the structural silicone adhesive according to the present invention;
FIG. 6 is a state diagram of the motion of FIG. 5;
FIG. 7 is a front view of the connection between the rotating rod and the lower positioning cylinder in the testing device and the testing method for the tear resistance of the structural silicone adhesive according to the present invention;
FIG. 8 is a top view of the connection between the rotating rod and the lower positioning cylinder in the testing apparatus and the testing method for the tear resistance of the structural silicone adhesive according to the present invention.
In the figure: 1. a base; 2. a clamping mechanism; 21. a hydraulic cylinder; 22. a clamping block; 23. a test piece; 24. a base plate; 3. a glue gun; 4. a drive mechanism; 41. installing a box; 42. a gear; 43. a screw rod; 44. a sliding sleeve; 45. an L-shaped connecting rod; 46. a strip toothed plate; 47. a slide plate; 48. a roller; 5. an electric telescopic rod; 6. a support; 7. a spraying mechanism; 8. a trigger mechanism; 81. a guide seat; 82. a T-shaped slider; 83. a bump; 84. a pressure sensor; 85. an L-shaped trigger plate; 86. a rotating rod; 87. a slide bar; 88. a positioning cylinder; 89. a special-shaped chute; 9. a control panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-8, the equipment and the method for testing the tear resistance of the silicone structural adhesive comprise a base 1, a clamping mechanism 2 arranged at the top of the base 1 and used for clamping two test pieces 23, a glue gun 3 positioned right above the test pieces 23 and a driving mechanism 4 used for driving the glue gun 3 to glue, wherein the top of the driving mechanism 4 is connected with a support 6 at the top of the base 1 through an electric telescopic rod 5, a spraying mechanism 7 used for accelerating the structural adhesive to solidify is obliquely arranged on the inner wall at the left side of the support 6, a triggering mechanism 8 used for starting the spraying mechanism 7 is arranged at the right side of the support 6, and the triggering mechanism 8 is electrically connected with a control panel 9 on the outer surface of the support 6;
the driving mechanism 4 comprises a mounting box 41 arranged at the bottom of the electric telescopic rod 5 and a gear 42 rotatably arranged in the mounting box 41, the lower part of a mounting shaft of the gear 42 is connected with a lead screw 43 through a coupler, the lower surface of the lead screw 43 is in threaded connection with a sliding sleeve 44, a threaded hole screwed with the lead screw 43 is formed in the sliding sleeve 44, the bottom of the sliding sleeve 44 is in sliding connection with the inner wall of the glue gun 3, and the gear 42 is driven by a motor;
the L-shaped connecting rod 45 is arranged at the left lower end of the mounting box 41, an ear plate is arranged at the top of the glue gun 3, and the ear plate is connected with the lower part of the L-shaped connecting rod 45 in a front-back sliding manner;
a strip-shaped toothed plate 46 is arranged on the right side of the installation box 41, a plurality of toothed blocks meshed with the gear 42 are arranged on one side of the strip-shaped toothed plate 46, and through grooves used for the gear 42 to move back and forth are formed in the upper end and the lower end of the installation box 41;
the trigger mechanism 8 comprises a guide seat 81 arranged on the right side of the support 6 and a T-shaped sliding block 82 arranged in the guide seat 81 in a sliding manner, the left end of the T-shaped sliding block 82 penetrates through the guide seat 81 and is connected with a convex block 83, a return spring is arranged between the T-shaped sliding block 82 and the inner wall of the guide seat 81, a pressure sensor 84 in contact with the right side of the T-shaped sliding block 82 is fixedly arranged on the inner wall, and the pressure sensor 84 is electrically connected with the control panel 9;
a rotating rod 86 is rotatably arranged on the right side of the L-shaped connecting rod 45, an L-shaped trigger plate 85 abutted against the bump 83 is arranged on the surface of the rotating rod 86, positioning cylinders 88 in sliding connection with the upper end and the lower end of the rotating rod 86 are respectively arranged on the top of the base 1 and the right side of the bracket 6, and the open ends of the two positioning cylinders 88 are close to each other;
the upper end and the lower end of the rotating rod 86 are respectively provided with a protruding sliding rod 87, the two sliding rods 87 and the L-shaped trigger plate 85 are arranged on the same side of the rotating rod 86, and a special-shaped sliding groove 89 matched with the sliding rods 87 is formed in the positioning cylinder 88;
the special-shaped sliding grooves 89 are vertical grooves arranged on the left side and the right side of the positioning cylinder and a C-shaped groove arranged between the two vertical grooves, the two vertical grooves are long and short, the tops of the two vertical grooves are flush, the C-shaped groove is obliquely arranged, the two ends of the C-shaped groove are communicated with the bottom of the vertical groove, and the long vertical groove in the positioning cylinder 88 on the upper portion of the rotating rod 86 and the long vertical groove in the positioning cylinder 88 on the lower portion of the rotating rod 86 are arranged in a left-right staggered mode;
Further, the spraying mechanism 7 comprises a spraying head obliquely arranged on the left side of the support 6, the spraying head is communicated with hot water in the external water storage tank through an external water pump, the external water pump is electrically connected with the control panel 9, and the spraying head is obliquely downwards inclined from left to right.
Further, embedded treater, relay and the time-recorder of being equipped with of control panel 9, control panel 9 surface is provided with display screen and keyboard, and time-recorder, display screen and keyboard and treater electricity are connected, and pressure sensor 84's output is connected with the input electricity of treater, and the output of treater is connected with the input electricity of relay, and the output of relay is connected with external water pump and pneumatic cylinder 21 electricity respectively.
Further, the bottom of the motor is rotatably connected with the sliding plate 47, the left side and the right side of the bottom of the sliding plate 47 are respectively rotatably provided with the idler wheels 48, and the left side and the right side of the top of the installation box 41 are respectively provided with a sliding rail for the idler wheels 48 to slide.
Further, the sliding sleeve 44 surface is provided with bellied bar guide block, bar guide block and the bar guide way sliding connection of beating the gluey rifle 3 inner wall.
Furthermore, an open slot for the rubber tube is arranged on the left side of the glue spraying gun 3, and a through hole for leaking the rubber tube opening is arranged at the bottom of the glue spraying gun 3.
Further, the method for testing the tear resistance of the structural silicone adhesive comprises the following steps;
step S1: firstly, placing a rubber tube into a glue gun 3 from the left side of the glue gun 3, and exposing an opening of the rubber tube from a through hole at the bottom of the glue gun 3;
step S2: firstly, inserting the T-shaped ends of two test pieces 23 into the two clamping blocks 22 respectively, and then synchronously starting the two hydraulic cylinders 21 to extend to drive the two clamping blocks 22 to approach each other until the two test pieces 23 are abutted;
step S3: presetting the spraying time of the spraying mechanism 7 in the processor through a keyboard and a display screen;
step S4: starting the electric telescopic rod 5 to extend, driving the glue gun 3 to move downwards through the driving mechanism 4 until the opening of the rubber tube in the glue gun 3 is close to the butt joint of the two test pieces 23, then starting the motor to drive the gear 42 to rotate, further driving the screw rod 43 to rotate, further enabling the sliding sleeve 44 at the bottom of the screw rod 43 to slide downwards, and extruding the rubber tube in the glue gun 3, so that the structural glue in the rubber tube is dripped at the butt joint of the two test pieces 23; when the gear 42 rotates, the gear blocks crawl backwards on the strip-shaped toothed plate 46, so that the glue gun 3 is driven to move backwards, structural glue is fully applied to the abutted positions of the two test pieces 23, and finally the motor is stopped;
step S5: starting the electric telescopic rod 5 to shorten the electric telescopic rod and driving the driving mechanism 4 to move upwards and reset;
wherein, in step S4: in the process of moving the driving mechanism 4 downwards, the sliding rod 87 at the upper part of the rotating rod 86 firstly leaves the long vertical groove of the special-shaped sliding groove 89 in the upper positioning cylinder 88, and along with the continuous downward movement of the driving mechanism 4, the sliding rod 87 at the lower part of the rotating rod 86 firstly slides with the short vertical groove of the special-shaped sliding groove 89 in the lower positioning cylinder 88 and then slides into the inclined C-shaped groove to drive the L-shaped trigger plate 85 on the surface of the rotating rod 86 to rotate to be close to the bump 83;
at step S5: along with the upward movement process of the driving mechanism 4, the sliding rod 87 at the lower part of the rotating rod 86 is separated from the long vertical groove of the special-shaped sliding groove 89 at the lower part, so that the L-shaped trigger plate 85 is in contact with the bump 83, the T-shaped sliding block 82 is driven to slide rightwards to extrude the return spring, the T-shaped sliding block 82 triggers the pressure sensor 84, then the pressure sensor 84 sends a signal to the processor for processing, the processor starts the timer to count, the external water pump is controlled to be started simultaneously, and water mist is sprayed on the structural adhesive at the abutting part of the two test pieces 23, so that the structural adhesive is accelerated to solidify; when the data in the timer is consistent with the preset numerical value, the processor sends an instruction to the relay to control the external water pump to be turned off, and simultaneously controls the two hydraulic cylinders 21 to be started synchronously to shorten the hydraulic cylinders, so that the two test pieces 23 are pulled to deviate from each other, and the anti-tearing performance of the structural adhesive is detected;
step S6: when the rubber tube in the glue gun 3 needs to be taken down, the reverse driving motor drives the gear 42 to rotate, so that the sliding sleeve 44 at the lower part of the screw rod 43 is driven to move downwards to be separated from the rubber tube, meanwhile, the gear 42 moves forwards and resets along the strip toothed plate 46, and then the rubber tube is taken out from the open slot at the left side of the glue gun 3.
Further, the bottom of the projection 83 is provided with a slope, and the slope inclines upward from right to left.
The working principle is as follows: when in use, the rubber tube is firstly placed into the glue gun 3 from the left side of the glue gun 3, and the opening of the rubber tube is exposed from the through hole at the bottom of the glue gun 3;
further, the T-shaped ends of the two test pieces 23 are respectively inserted into the two clamping blocks 22, and then the two hydraulic cylinders 21 are synchronously started to extend to drive the two clamping blocks 22 to approach each other until the two test pieces 23 are abutted;
further, the spraying time of the spraying mechanism 7 is preset in the processor through a keyboard and a display screen;
further, the electric telescopic rod 5 is started to extend, the driving mechanism 4 drives the glue gun 3 to move downwards until the opening of the rubber tube in the glue gun 3 is close to the butt joint of the two test pieces 23, the motor is started again, the gear 42 is driven to rotate, the screw rod 43 is driven to rotate, the sliding sleeve 44 at the bottom of the screw rod 43 slides downwards, the rubber tube in the glue gun 3 is extruded, and therefore structural glue in the rubber tube is dripped to the butt joint of the two test pieces 23;
when the gear 42 rotates, the gear blocks crawl backwards on the strip-shaped toothed plate 46, so that the glue gun 3 is driven to move backwards, structural glue is fully applied to the abutted positions of the two test pieces 23, and finally the motor is stopped;
further, the electric telescopic rod 5 is started to be shortened, and the driving mechanism 4 is driven to move upwards for resetting;
during the downward movement of the driving mechanism 4, the sliding rod 87 at the upper part of the rotating rod 86 firstly leaves the long vertical groove of the special-shaped sliding groove 89 in the upper positioning cylinder 88, and along with the continuous downward movement of the driving mechanism 4, the sliding rod 87 at the lower part of the rotating rod 86 firstly slides with the short vertical groove of the special-shaped sliding groove 89 in the lower positioning cylinder 88 and then slides into the inclined C-shaped groove to drive the L-shaped trigger plate 85 on the surface of the rotating rod 86 to rotate and approach the bump 83;
along with the upward movement of the driving mechanism 4, the sliding rod 87 at the lower part of the rotating rod 86 is separated from the long vertical groove of the lower special-shaped sliding groove 89, so that the L-shaped trigger plate 85 is in contact with the bump 83, the T-shaped sliding block 82 is driven to slide rightwards to extrude the return spring, the T-shaped sliding block 82 triggers the pressure sensor 84, then the pressure sensor 84 sends a signal to the processor for processing, the processor starts the timer to count, the external water pump is controlled to be started simultaneously, water mist is sprayed on the structural adhesive at the abutting part of the two test pieces 23, and the structural adhesive is accelerated to solidify; when the data in the timer is consistent with the preset numerical value, the processor sends an instruction to the relay to control the external water pump to be turned off, and simultaneously controls the two hydraulic cylinders 21 to be started synchronously to shorten the hydraulic cylinders, so that the two test pieces 23 are pulled to deviate from each other, and the anti-tearing performance of the structural adhesive is detected;
when the rubber tube in the glue gun 3 needs to be taken down, the reverse driving motor drives the gear 42 to rotate, so that the sliding sleeve 44 at the lower part of the screw rod 43 is driven to move downwards to be separated from the rubber tube, meanwhile, the gear 42 moves forwards and resets along the strip toothed plate 46, and then the rubber tube is taken out from the open slot at the left side of the glue gun 3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The equipment for testing the tear resistance of the silicone structural adhesive is characterized by comprising a base (1), a clamping mechanism (2) arranged at the top of the base (1) and used for clamping two test pieces (23), a glue gun (3) positioned right above the test pieces (23) and a driving mechanism (4) used for driving the glue gun (3) to glue, wherein the top of the driving mechanism (4) is connected with a support (6) at the top of the base (1) through an electric telescopic rod (5), a spraying mechanism (7) used for accelerating the structural adhesive to solidify is obliquely arranged on the inner wall of the left side of the support (6), a triggering mechanism (8) used for opening the spraying mechanism (7) is arranged on the right side of the support (6), and the triggering mechanism (8) is electrically connected with a control panel (9) on the outer surface of the support (6);
the driving mechanism (4) comprises a mounting box (41) arranged at the bottom of the electric telescopic rod (5) and a gear (42) rotatably arranged in the mounting box (41), the lower part of a mounting shaft of the gear (42) is connected with a lead screw (43) through a coupler, the lower surface of the lead screw (43) is in threaded connection with a sliding sleeve (44), a threaded hole screwed with the lead screw (43) is formed in the sliding sleeve (44), the bottom of the sliding sleeve (44) is in sliding connection with the inner wall of the glue gun (3), and the gear (42) is driven by a motor;
an L-shaped connecting rod (45) is arranged at the lower left end of the mounting box (41), an ear plate is arranged at the top of the glue gun (3), and the ear plate is connected with the lower part of the L-shaped connecting rod (45) in a front-back sliding manner;
a strip-shaped toothed plate (46) is arranged on the right side of the mounting box (41), a plurality of toothed blocks meshed with the gear (42) are arranged on one side of the strip-shaped toothed plate (46), and through grooves used for the gear (42) to move back and forth are formed in the upper end and the lower end of the mounting box (41);
the trigger mechanism (8) comprises a guide seat (81) arranged on the right side of the support (6) and a T-shaped sliding block (82) arranged in the guide seat (81) in a sliding mode, the left end of the T-shaped sliding block (82) penetrates through the guide seat (81) to be connected with a convex block (83), a reset spring is arranged between the T-shaped sliding block (82) and the inner wall of the guide seat (81), a pressure sensor (84) in contact with the right side of the T-shaped sliding block (82) is fixedly arranged on the inner wall, and the pressure sensor (84) is electrically connected with the control panel (9);
a rotating rod (86) is rotatably arranged on the right side of the L-shaped connecting rod (45), an L-shaped trigger plate (85) abutted to the bump (83) is arranged on the surface of the rotating rod (86), positioning cylinders (88) which are slidably connected with the upper end and the lower end of the rotating rod (86) are respectively arranged on the top of the base (1) and the right side of the bracket (6), and the open ends of the two positioning cylinders (88) are close to each other;
the upper end and the lower end of the rotating rod (86) are respectively provided with a protruding sliding rod (87), the two sliding rods (87) and the L-shaped trigger plate (85) are arranged on the same side of the rotating rod (86), and a special-shaped sliding groove (89) matched with the sliding rod (87) is formed in the positioning cylinder (88);
the special-shaped sliding grooves (89) are vertical grooves arranged on the left side and the right side of the positioning cylinder (88) and a C-shaped groove arranged between the two vertical grooves, the two vertical grooves are long and short, the tops of the two vertical grooves are flush, the C-shaped groove is obliquely arranged, the two ends of the C-shaped groove are communicated with the bottom of the vertical groove, and the long vertical grooves in the positioning cylinder (88) on the upper portion of the rotating rod (86) and the long vertical grooves in the positioning cylinder (88) on the lower portion of the rotating rod (86) are arranged in a left-right staggered mode;
clamping mechanism (2) set up two pneumatic cylinders (21) at both ends about base (1) including the symmetry, two pneumatic cylinder (21) near-end mutually all is provided with clamp splice (22) that are used for pressing from both sides two test pieces (23), two the one end that test piece (23) deviate from each other is the T type setting, and the T type slides around with clamp splice (22) inner wall and pegs graft, base (1) middle part bilateral symmetry is provided with two backing plates (24) that are used for placing test piece (23).
2. The structural silicone adhesive tear resistance testing device according to claim 1, wherein the spraying mechanism (7) comprises a spraying head obliquely arranged on the left side of the support (6), the spraying head is communicated with hot water in an external water storage tank through an external water pump, the external water pump is electrically connected with the control panel (9), and the spraying head is obliquely inclined downwards from left to right.
3. The structural silicone adhesive tear resistance testing device according to claim 2, wherein a processor, a relay and a timer are embedded in the control panel (9), a display screen and a keyboard are arranged on the surface of the control panel (9), the timer, the display screen, the keyboard and the processor are electrically connected, the output end of the pressure sensor (84) is electrically connected with the input end of the processor, the output end of the processor is electrically connected with the input end of the relay, and the output end of the relay is electrically connected with the external water pump and the hydraulic cylinder (21) respectively.
4. The structural silicone adhesive tear resistance testing device according to claim 3, wherein the bottom of the motor is rotatably connected with a sliding plate (47), rollers (48) are rotatably arranged on the left side and the right side of the bottom of the sliding plate (47), and sliding rails for sliding the rollers (48) are respectively arranged on the left side and the right side of the top of the mounting box (41).
5. The structural silicone adhesive tear resistance testing device according to claim 4, wherein the outer surface of the sliding sleeve (44) is provided with a raised strip-shaped guide block, and the strip-shaped guide block is slidably connected with a strip-shaped guide groove on the inner wall of the gluing gun (3).
6. The equipment for testing the tear resistance of the silicone structural adhesive according to claim 5, wherein an open slot for a rubber tube is formed in the left side of the gluing gun (3), and a through hole for leakage of the opening of the rubber tube is formed in the bottom of the gluing gun (3).
7. The structural silicone adhesive tear resistance verification device of claim 6, wherein the bottom of the projection (83) is provided with a slope, and the slope is inclined upwards from right to left.
8. An inspection method for realizing the tear resistance inspection equipment for the silicone structural adhesive according to any one of claims 1 to 7, comprising the steps of;
step S1: firstly, placing the rubber tube into the glue gun (3) from the left side of the glue gun (3), and exposing the opening of the rubber tube from the through hole at the bottom of the glue gun (3);
step S2: the T-shaped ends of the two test pieces (23) are respectively inserted into the two clamping blocks (22), and then the two hydraulic cylinders (21) are synchronously started to extend to drive the two clamping blocks (22) to be close to each other until the two test pieces (23) are abutted;
step S3: the spraying time of the spraying mechanism (7) is preset in the processor through a keyboard and a display screen;
step S4: starting the electric telescopic rod (5) to extend, driving the glue gun (3) to move downwards through the driving mechanism (4) until the opening of a rubber tube in the glue gun (3) is close to the butt joint of the two test pieces (23), starting the motor again, further driving the gear (42) to rotate, further driving the screw rod (43) to rotate, further enabling the sliding sleeve (44) at the bottom of the screw rod (43) to slide downwards, extruding the rubber tube in the glue gun (3), and further enabling the structural glue in the rubber tube to drip at the butt joint of the two test pieces (23); the gear (42) rotates, and meanwhile, the gear blocks climb backwards on the strip toothed plate (46) to further drive the glue gun (3) to move backwards, the butt joint parts of the two test pieces (23) are filled with structural glue, and finally the motor is stopped;
step S5: starting the electric telescopic rod (5) to shorten the electric telescopic rod and drive the driving mechanism (4) to move upwards for resetting;
wherein, in step S4: in the process that the driving mechanism (4) moves downwards, a sliding rod (87) at the upper part of the rotating rod (86) is firstly separated from a long vertical groove of a special-shaped sliding groove (89) in the upper positioning cylinder (88), and along with the continuous downward movement of the driving mechanism (4), the sliding rod (87) at the lower part of the rotating rod (86) firstly slides with a short vertical groove of the special-shaped sliding groove (89) in the lower positioning cylinder (88) and then slides into an inclined C-shaped groove to drive an L-shaped trigger plate (85) on the surface of the rotating rod (86) to rotate and approach to a bump (83);
at step S5: along with the upward moving process of the driving mechanism (4), a sliding rod (87) at the lower part of a rotating rod (86) is separated from a long vertical groove of a special-shaped sliding groove (89) at the lower part, so that an L-shaped trigger plate (85) is in contact with a bump (83), and a T-shaped sliding block (82) is driven to slide rightwards to extrude a reset spring, so that the T-shaped sliding block (82) triggers a pressure sensor (84), then the pressure sensor (84) sends a signal to a processor for processing, then the processor starts a timer to start counting, and simultaneously an external water pump is controlled to be started to spray water mist on the structural adhesive at the abutting part of two test pieces (23), so that the structural adhesive is accelerated to solidify; when the data in the timer is consistent with the preset numerical value, the processor sends an instruction to the relay to control the external water pump to be closed, and simultaneously controls the two hydraulic cylinders (21) to be synchronously started to shorten the hydraulic cylinders, so that the two test pieces (23) are pulled to deviate from each other, and the anti-tear performance of the structural adhesive is detected;
step S6: when the rubber tube in the glue gun (3) needs to be taken down, the reverse driving motor drives the gear (42) to rotate, so that the sliding sleeve (44) at the lower part of the screw rod (43) is driven to move downwards to be separated from the rubber tube, meanwhile, the gear (42) moves forwards and resets along the strip-shaped toothed plate (46), and then the rubber tube is taken out from the open slot at the left side of the glue gun (3).
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| FR2706613B1 (en) * | 1993-06-17 | 1995-09-01 | Aerospatiale | Method for determining the ductile tear resistance of a material. |
| CN202229973U (en) * | 2011-08-23 | 2012-05-23 | 东莞市高鑫检测设备有限公司 | Universal material test machine |
| CN210322568U (en) * | 2019-07-17 | 2020-04-14 | 广东天圣高科股份有限公司 | Power line tension and torsion testing machine |
| CN211784794U (en) * | 2020-03-17 | 2020-10-27 | 福建师范大学泉港石化研究院 | Intelligent electronic tension testing machine convenient to adjust |
| CN213516627U (en) * | 2020-09-29 | 2021-06-22 | 中测检测认证(深圳)有限公司 | Electronic tension tester |
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Denomination of invention: Testing equipment and methods for tear resistance of silicone structural adhesive Effective date of registration: 20220428 Granted publication date: 20220208 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Wosai New Material Technology Co.,Ltd. Registration number: Y2022980004948 |
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Denomination of invention: Testing equipment and methods for tear resistance of silicone structural adhesive Granted publication date: 20220208 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Wosai New Material Technology Co.,Ltd. Registration number: Y2024980011934 |