Adhesive fluidity testing device

Abstract

The present invention belongs to the technical field of adhesive detection, and in particular to an adhesive fluidity testing device. In view of the fact that the subjective measurement of the fluidity of the adhesive in the prior art is too subjective, and the use of professional instruments for measurement leads to high thresholds for use and is time-consuming and labor-intensive, the following scheme is proposed, including an installation fixing table, the installation fixing table includes a horizontal top installation platform and two mutually parallel balancing foot rods at the bottom, a vertical connecting plate is used to connect the installation platform and the two support rods, and a main mounting hole is provided through the middle of the installation platform away from the connecting plate. When testing the adhesive, the present invention can select test tubes with different apertures, observe the volume of adhesive passing through the test tubes under the same negative pressure environment and time, and thereby obtain the fluidity data for judging the batch of adhesives. The more adhesive that passes through per unit time, the better the fluidity of the batch of adhesives.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive detection, and in particular to an adhesive fluidity testing device. Background Art

[0002] Adhesive bonding refers to the technology of connecting the surfaces of homogeneous or heterogeneous objects with adhesives. It has the characteristics of continuous stress distribution, light weight, or sealing, and low process temperature in most cases. Adhesives play an important role in this process. The fluidity of adhesives has a crucial impact on the quality of bonding between objects. Poor fluidity of adhesives will cause insufficient adhesive filling during the bonding process, resulting in local gaps on the bonding surface, thereby affecting the bonding strength.

[0003] There are currently two ways to test the fluidity of adhesives. One is to measure through professional instruments such as rheometers and viscometers; the other is to judge by the feeling method of manual stirring. However, the rheometer in the former is expensive and requires a large investment, and the rheological parameters are relatively difficult for application engineers to understand, and the threshold for use is high. The single indicator of viscosity measured by the viscometer cannot accurately reflect the actual application performance. The latter manual stirring feeling method is too subjective and cannot be quantified. It is also affected by factors such as the tester, test environment, container, stirring tools, etc., and cannot fully and truly reflect the applicability. Summary of the invention

[0004] In view of the technical problems that the subjective measurement of the fluidity of the adhesive in the prior art is too subjective and the use of professional instruments leads to high threshold for use, time-consuming and labor-intensive, the present invention adopts the following technical solutions:

[0005] A device for testing the fluidity of adhesives, comprising a mounting and fixing platform, the mounting and fixing platform comprising a horizontal top mounting platform and two mutually parallel balancing foot rods at the bottom, a vertical connecting plate for connecting the mounting platform and the two supporting rods, a main mounting hole penetrating therethrough is provided at one end of the middle of the mounting platform away from the connecting plate, and a glue barrel with an opening upwardly in a barrel-shaped structure is fixedly connected in the main mounting hole, the inner wall of the barrel bottom of the glue barrel is provided with a conical bottom structure, which is conducive to allowing the colloid to be tested to leak from the conical discharge nozzle in the middle when the material leaks; and a conical discharge nozzle is provided on the outer wall of the bottom of the glue barrel, a stepped groove hole is provided on the inner wall of the bottom of the glue barrel at the conical discharge nozzle, and a test leak tube is connected in the stepped groove hole; a docking threaded disk is sleeved and fixed on the outer wall of the bottom end of the conical discharge nozzle, and a receiving barrel with an opening upwardly in a transparent barrel-shaped structure is screwed on the bottom end of the docking threaded disk, and a scale mark is reserved on the outer wall of the receiving barrel; a threaded plate is provided on the docking threaded disk which is obliquely inserted into the The oblique insert tube of the inner cavity of the butt-jointed threaded disk is provided, and a piston suction barrel is arranged at one end of the mounting platform of the mounting fixing platform near the connecting plate, and a Y-shaped fixing frame is fixed at the top opening of the piston suction barrel, a pull rod sliding hole is opened at one branch of the Y-shaped fixing frame near the piston suction barrel, and a pulling rod extending into the piston suction barrel is slidably connected in the pull rod sliding hole, a piston disk is fixed at one end of the pulling rod near the bottom of the piston suction barrel, and a back-stop tooth is arranged on the outer wall of the pulling rod, and a positioning mechanism matched with the back-stop tooth is arranged at the top of the Y-shaped fixing frame; according to the parameter requirements of the traction force during the suction detection, the pulling rod can be pulled to a specific position and stopped each time, so as to control the suction force of a certain parameter to remain unchanged to compare the flow characteristics of each batch of adhesive; an exhaust pipe is arranged between the air inlet at the bottom end of the piston suction barrel and the oblique insert tube; an externally threaded fixing ring is screwed on the circumferential inner wall of the mounting fixing platform near the top, and a tightening mechanism matched with the test leak tube is arranged on the inner wall of the externally threaded fixing ring.

[0006] A further arrangement of the present invention is that the docking threaded disk comprises a cylindrical barrel 1 with two openings opposite and different diameters, a cylindrical basin 2 and an intermediate connecting pipe; the intermediate connecting pipe is welded between the two to connect the two, the connecting pipe in the middle coincides with the center line of the test leak tube, and the inner diameter of the connecting pipe is larger than the outer diameter of the test leak tube; the bottom end of the test leak tube protrudes from the lowest end of the connecting pipe and penetrates into the interior of the receiving barrel near the top position.

[0007] A further configuration of the present invention is that a sealing ring groove is opened on the top inner wall of the cylindrical basin II near the circumferential edge, and a sealing ring is clamped in the sealing ring groove, and the cross-section of the sealing ring is an inverted trapezoid, which can improve the anti-falling effect; and the diameter of the sealing ring is adapted to the diameter of the top pipe opening of the material receiving barrel; the oblique insertion pipe is obliquely inserted at the bottom of the barrel of the cylindrical basin II, and the cylindrical barrel I is sealed and sleeved on the circumferential outer wall of the conical discharge nozzle; the circumferential inner wall of the cylindrical basin II is opened with a self-locking thread to ensure that a good sealing effect is formed when the top opening of the material receiving barrel is screwed together and tightly against the sealing ring.

[0008] The present invention is further configured in that a tightening mechanism is provided on the circumferential inner wall of the external threaded fixing ring, and the tightening mechanism includes protruding ear plates fixed on the inner wall of the external threaded fixing ring in a centrally symmetrical distribution, and the upper surfaces of the protruding ear plates are provided with screw holes; the positioning mechanism includes a central pressure plate fixed to the three protruding ear plates by bolts, and a counter nut is embedded in the middle of the central pressure plate, a retaining valve stem extending vertically downward is screwed in the middle of the counter nut, and a counter ball is fixed to the bottom end of the retaining valve stem; a spherical chamfer matching the diameter of the counter ball is provided at the top entrance of the test leak tube; to ensure When it is necessary to close the flow of the intercepting valve stem, the ball descends to completely block the pipe mouth of the test leak tube; three guide tubes symmetrically distributed in the center are fixed near the center of the lower surface of the central pressure plate, and the bottom ends of the guide tubes are slidably inserted with pressure rods, and the top ends of the pressure rods are fixed with buffer springs, and the top ends of the buffer springs are fixed to the lower surface of the central pressure plate; the bottom ends of the three pressure rods are in contact with the upper surface of the same test leak tube; by means of the pressure rods arranged under the central pressure plate, the test leak tube can be tightly fixed to the bottom of the glue barrel during detection.

[0009] A further configuration of the present invention is that a three-way connecting pipe is fixed between the air inlet end of the piston vacuum barrel and the vacuum pipe, and the other air outlet of the three-way connecting pipe is connected to a pressure gauge; it is used to monitor the internal air pressure value during each suction to ensure that the suction value of each fluidity test is consistent.

[0010] A further configuration of the present invention is that a control box is fixed on the front side of the side of the mounting platform of the mounting fixing table, and a rotating groove is opened on one side of the mounting platform located on the control box for installing a pressure gauge.

[0011] A further arrangement of the present invention is that a guide ear plate is fixed on the circumferential inner wall of the external threaded fixing ring between two adjacent protruding ear plates, and a vertical through hole is opened on the top of each guide ear plate, a reciprocating push rod is slidably connected in the through hole, and a spiral scraper attached to the inner wall of the glue barrel is fixed on the bottom end of the reciprocating push rod; an annular retaining ring is fixed on the circumferential outer wall of the reciprocating push rod near the lower surface of the guide ear plate, and two return springs are fixed between the top of the annular retaining ring and the lower surface of the guide ear plate; a fixing strip symmetrically distributed at the center is fixed to the top of each of the reciprocating push rods; when testing, the adhesive can be prevented from leaking down with the center during detection, while the adhesive near the side wall will be attached to the inner wall of the glue barrel due to the viscosity of the fluid itself. If the adhesive at the edge is not pushed down in time, continuous suction will lead to an empty state, which will affect the final detection accuracy.

[0012] A further arrangement of the present invention is that the circumferential outer wall of the glue loading barrel is provided with three equidistantly distributed vertical sections, and a pulley frame of an L-shaped structure is fixed at the same height of each section, each of the pulley frames is provided with a fixed pulley, and the circumferential outer wall of the fixed pulley is provided with a rope groove; the circumferential outer wall of the glue loading barrel is provided with an annular groove near the pulley frame, and an annular slide rail is embedded in the annular groove, and a slewing ring is connected to the inner rotation of the annular slide rail, three rope fixing blocks are fixed on the circumferential outer wall of the slewing ring, and pull ropes are fixed on the rope fixing blocks, and the pull ropes are passed around the fixed pulley and fixed on the corresponding fixing bar; a reduction motor is fixed on the top of the mounting fixing platform near the piston vacuum barrel, and an intermittent gear is fixed on the top of the output shaft of the reduction motor, and teeth meshing with the intermittent gear are provided on the circumferential outer wall of the slewing ring near the intermittent gear; the intermittent up and down movement of the spiral scraper can be achieved by the forward pulling of the intermittent gear and the reverse pulling of the reset spring 2.

[0013] A further configuration of the present invention is that the cross-section of the spiral scraper is a right-angled triangle structure, and one of the right-angled sides is attached to the inner wall of the glue barrel; the number of teeth of the intermittent gear is less than the number of teeth; when in use, when the spiral scraper rises rapidly, the adhesive carried up can be reduced, and when it descends, more adhesive can be scraped off.

[0014] The U-shaped stopper is fixed on the top of the Y-shaped fixing frame, and a U-shaped stopper is fixed above the U-shaped stopper and the anti-twist-through hole. The U-shaped stopper and the anti-twist-through hole are slidably connected with the same stop rod, and a stop tooth is provided at one end of the stop rod close to the pulling rod, and a stop tooth groove engaged with the stop tooth is reserved on the outer wall of the pulling rod; a spring clamp is fixed at one end of the stop rod close to the pulling rod, and a reset spring is fixed between the spring clamp and the surface of the U-shaped stopper; a pull ring is fixed to the bottom end of the stop rod; an elliptical ball is fixed to the top of the pulling rod for easy lifting, and the piston pump barrel is an inclined structure as a whole, and an oblique through hole matching the diameter of the piston pump barrel is provided on the mounting and fixing platform; through the positioning mechanism, the pulling rod can stop at any time when it reaches a specified negative pressure value during pulling, and the constant air pressure value can be achieved each time it is measured in combination with the setting of the pressure gauge.

[0015] The beneficial effects of the present invention are:

[0016] 1. Through the combination of the piston vacuum barrel and the glue barrel, when testing the adhesive, you can choose test leak tubes with different apertures, observe the volume of adhesive passing through the test leak tube under the same negative pressure environment and time, and get the fluidity data for judging the batch of adhesive. The more adhesive that passes through per unit time, the better the fluidity of the batch of adhesive.

[0017] 2. By setting a test leak tube whose bottom end directly extends into the receiving barrel, the adhesive to be tested can be directly drained into the receiving barrel at the bottom, avoiding the adhesive from adhering to the inner wall of the stepped groove hole, which is convenient for the later cleaning of the device and the replacement of the test leak tube.

[0018] 3. Due to the setting of the spiral scraper, during the test, the adhesive can be prevented from leaking down along the center. The viscosity of the fluid near the side wall will cause the adhesive to adhere to the inner wall of the glue barrel. If the adhesive at the edge is not pushed down in time, continuous suction will lead to an empty state, which will affect the final detection accuracy.

[0019] 4. Through the positioning mechanism, the pull rod can stop at any time when it reaches the specified negative pressure value during pulling. Combined with the setting of the pressure gauge, the constant air pressure value can be achieved each time it is measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an adhesive fluidity testing device proposed by the present invention;

[0021] Figure 2 This is a bottom view structural schematic diagram of an adhesive fluidity testing device proposed by the present invention;

[0022] Figure 3 A top view of an adhesive fluidity testing device proposed by the present invention;

[0023] Figure 4 An adhesive fluidity testing device proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0024] Figure 5 An adhesive fluidity testing device proposed by the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 6 This is a schematic diagram of the assembly structure of a tightening mechanism of an adhesive fluidity testing device proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the explosion structure of a tightening mechanism in an adhesive fluidity testing device proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the installation structure of a spiral scraper in an adhesive fluidity testing device proposed by the present invention;

[0028] Fig. 9 This is a schematic diagram of the structure of a fixing table installed in an adhesive fluidity testing device proposed by the present invention;

[0029] Fig.10 A schematic diagram of a half-section structure of a glue barrel of an adhesive fluidity testing device proposed by the present invention;

[0030] Fig.11 The present invention provides a schematic diagram of the assembly structure of a stop rod of an adhesive fluidity testing device.

[0031] In the figure: 1. Mounting platform; 101. Balance foot rod; 102. Oblique through hole; 103. Main mounting hole; 2. Control box; 3. Pressure gauge; 4. Y-shaped fixing bracket; 401. Anti-twist through hole 1; 402. U-shaped stopper; 403. Reset spring 1; 404. Pull rod sliding hole; 5. Pull rod; 6. Stop rod; 7. Piston pumping barrel; 8. Speed ​​reducer motor; 9. Intermittent gear; 10. External thread fixing ring; 1001. Protruding ear plate; 11. Center pressure plate; 1101. Top nut; 1102. Buffer spring; 1103. Guide tube; 12. Retained valve stem; 12 01. Ball; 13. Fixing bar; 14. Pull rope; 15. Pulley frame; 16. Annular slide rail; 17. Rotating ring; 171. Teeth; 172. Rope fixing block; 18. Glue barrel; 181. Cut surface; 182. Conical discharge nozzle; 183. Annular groove; 19. Docking threaded disk; 20. Receiving barrel; 21. Vacuum pipe; 22. Guide ear plate; 23. Reset spring 2; 24. Annular retaining ring; 25. Reciprocating push rod; 26. Three-way connecting pipe; 27. Test leak pipe; 28. Pressure rod; 29. ​​Spiral scraper; 30. Oblique insert; 31. Sealing ring; 32. Fixed pulley. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In this embodiment, refer to Figure 1-11 , an adhesive fluidity testing device, comprising a mounting and fixing platform 1, the mounting and fixing platform 1 comprising a horizontal top mounting platform and two mutually parallel balancing foot rods 101 at the bottom, a vertical connecting plate for connecting the mounting platform and the two supporting rods, a main mounting hole 103 penetrating therethrough is opened at one end of the middle of the mounting platform away from the connecting plate, and a glue barrel 18 with an upwardly opening barrel-shaped structure is clamped and fixed in the main mounting hole 103, the inner wall of the barrel bottom of the glue barrel 18 is provided with a conical bottom structure, which is conducive to allowing the colloid to be tested to leak from the conical discharge nozzle 182 in the middle when leaking; and a conical discharge nozzle 182 is provided on the bottom outer wall of the glue barrel 18, a stepped slot is opened on the bottom inner wall of the glue barrel 18 at the conical discharge nozzle 182, and a test leak tube 27 is clamped in the stepped slot;

[0034] The outer wall of the bottom end of the conical discharge nozzle 182 is sleeved and fixed with a docking threaded disk 19, and the bottom end of the docking threaded disk 19 is screwed with a receiving barrel 20 with an opening upward and a transparent barrel-shaped structure, and the outer wall of the receiving barrel 20 is reserved with scale marks; the docking threaded disk 19 is provided with an oblique insertion tube 30 obliquely inserted into the inner cavity of the docking threaded disk 19, and the mounting platform of the mounting fixing platform 1 is provided with a piston vacuum barrel 7 at one end close to the connecting plate, and a Y-shaped fixing frame 4 is fixed at the top opening of the piston vacuum barrel 7, and the Y-shaped fixing frame 4 is close to the piston vacuum barrel 7. A rod slide hole 404 is provided, and a drawing rod 5 extending into the piston pumping barrel 7 is slidably connected in the rod slide hole 404, a piston plate is fixed to one end of the drawing rod 5 close to the bottom of the piston pumping barrel 7, and a back-stopping tooth is provided on the outer wall of the drawing rod 5, and a positioning mechanism that matches the back-stopping tooth is provided on the top of the Y-shaped fixing frame 4; according to the parameter requirements for the traction force during the suction test, the drawing rod 5 can be pulled to a specific position each time to stop, so as to control a certain parameter of the suction force to remain unchanged to compare the flow characteristics of each batch of adhesive;

[0035] An exhaust pipe 21 is arranged between the air inlet at the bottom end of the piston exhaust barrel 7 and the oblique insert 30; an externally threaded fixing ring 10 is screwed on the circumferential inner wall of the mounting fixing platform 1 near the top, and a tightening mechanism compatible with the test leak tube 27 is arranged on the inner wall of the externally threaded fixing ring 10; it can be understood that through the combination of the piston exhaust barrel 7 and the glue barrel 18, when testing the adhesive, test leak tubes 27 with different apertures can be selected, and the volume of adhesive passing through the test leak tube 27 can be observed under the same negative pressure environment and time, so as to obtain data for judging the fluidity of the batch of adhesives. The more adhesive passing through per unit time indicates that the fluidity of the batch of adhesives is better.

[0036] In the present invention, the docking threaded disk 19 includes two cylindrical barrels 1 with opposite openings and different diameters, a cylindrical basin 2 and an intermediate connecting pipe; the intermediate connecting pipe is welded between the two to connect the two, the connecting pipe in the middle coincides with the center line of the test leak tube 27, and the inner diameter of the connecting pipe is larger than the outer diameter of the test leak tube 27; the bottom end of the test leak tube 27 protrudes from the lowest end of the connecting pipe and penetrates into the interior of the receiving barrel 20 near the top; through such an arrangement, the adhesive to be tested can be directly drained into the receiving barrel 20 at the bottom to avoid the adhesive sticking to the inner wall of the stepped groove hole, which is convenient for the later cleaning of the device and the replacement of the test leak tube 27.

[0037] Please refer to Figure 4-6A sealing ring groove is opened on the top inner wall of the cylindrical basin 2 near the circumferential edge, and a sealing ring 31 is clamped in the sealing ring groove. The cross-section of the sealing ring 31 is an inverted trapezoid, which can improve the anti-falling effect; and the diameter of the sealing ring 31 is adapted to the diameter of the top pipe opening of the receiving barrel 20; the oblique insertion tube 30 is obliquely inserted at the bottom of the barrel of the cylindrical basin 2, and the cylindrical barrel 1 is sealed and connected to the circumferential outer wall of the conical discharge nozzle 182; in this embodiment, the connection is made by screwing with raw material tape; the circumferential inner wall of the cylindrical basin 2 is opened with a self-locking thread to ensure that a good sealing effect is formed when the top opening of the receiving barrel 20 is screwed to the sealing ring 31.

[0038] Please refer to Figure 1 , Figure 4 and Figure 6 The circumferential inner wall of the external threaded fixing ring 10 is provided with a tightening mechanism, and the tightening mechanism includes protruding ear plates 1001 fixed on the inner wall of the external threaded fixing ring 10 in a centrally symmetrical distribution, and the upper surfaces of the protruding ear plates 1001 are provided with screw holes; the positioning mechanism includes a central pressure plate 11 fixed to the three protruding ear plates 1001 by bolts, and a counter nut 1101 is embedded in the middle of the central pressure plate 11, and a retaining valve stem 12 extending vertically downward is screwed in the middle of the counter nut 1101, and a counter ball 1201 is fixed to the bottom end of the retaining valve stem 12; a spherical chamfer matching the diameter of the counter ball 1201 is provided at the top entrance of the test leak tube 27; to ensure that the required sealing When the closed intercepting valve stem 12 is flowing, the ball 1201 descends to completely block the pipe mouth of the test leak tube 27; three guide tubes 1103 are fixed to the lower surface of the central pressure plate 11 near the center and are symmetrically distributed, and the bottom ends of the guide tubes 1103 are slidably inserted with pressure rods 28, and the top ends of the pressure rods 28 are fixed with buffer springs 1102, and the top ends of the buffer springs 1102 are fixed to the lower surface of the central pressure plate 11; the bottom ends of the three pressure rods 28 are in contact with the upper surface of the same test leak tube 27; by setting the pressure rod 28 under the central pressure plate 11, the test leak tube 27 can be tightly fixed to the bottom of the glue barrel 18 during detection.

[0039] Please refer to Figure 1 , Figure 4 and Figure 6 A three-way connecting pipe 26 is fixed between the air inlet end of the piston vacuum barrel 7 and the vacuum pipe 21, and the other air outlet of the three-way connecting pipe 26 is connected to a pressure gauge 3; it is used to monitor the internal air pressure value during each suction to ensure that the suction value of each fluidity test is consistent.

[0040] Please refer to Figure 1 , Figure 6 and Fig. 9 A control box 2 is fixed on the front side of the mounting platform of the mounting fixing table 1, and a rotating groove is opened on one side of the mounting platform located at the control box 2 for installing a pressure gauge 3.

[0041] Please refer to Figure 4 and Figure 8 The inner circumferential wall of the external threaded fixing ring 10 is located between two adjacent protruding ear plates 1001, and a guide ear plate 22 is fixed, and a vertical through hole is opened at the top of each guide ear plate 22, and a reciprocating push rod 25 is slidably connected in the through hole, and a spiral scraper 29 attached to the inner wall of the glue barrel 18 is fixed at the bottom end of the reciprocating push rod 25; an annular retaining ring 24 is fixed to the outer circumferential wall of the reciprocating push rod 25 near the lower surface of the guide ear plate 22, and the top of the annular retaining ring 24 is fixed to the inner wall of the glue barrel 18. A return spring 23 is fixed between the end and the lower surface of the guide ear plate 22; a fixing strip 13 symmetrically distributed at the center is fixed to the top of each reciprocating push rod 25; when testing, the adhesive can be prevented from leaking down along the center during detection, while the adhesive near the side wall will be attached to the inner wall of the glue barrel 18 due to the viscosity of the fluid itself. If the adhesive at the edge is not pushed down in time, continuous suction will lead to an empty state, which will then affect the final detection accuracy.

[0042] Please refer to Figure 3 , Figure 6 , Figure 8 and Fig.10 The outer circumferential wall of the glue barrel 18 is provided with three equidistantly distributed vertical sections 181, and an L-shaped pulley frame 15 is fixed at the same height of each section 181, each pulley frame 15 is provided with a fixed pulley 32, and the outer circumferential wall of the fixed pulley 32 is provided with a rope groove; the outer circumferential wall of the glue barrel 18 is provided with an annular groove 183 near the pulley frame 15, and the annular groove 183 is embedded with an annular slide rail 16, the inner rotatable connection of the annular slide rail 16 is connected with a slewing ring 17, and the outer circumferential wall of the slewing ring 17 is fixed with three rope fixing blocks 17 2, and a pull rope 14 is fixed on the rope fixing block 172, and the pull rope 14 is fixed on the corresponding fixing bar 13 after passing through the fixed pulley 32; a reduction motor 8 is fixed on the top of the mounting fixing platform 1 near the piston vacuum barrel 7, and an intermittent gear 9 is fixed on the top of the output shaft of the reduction motor 8, and teeth 171 meshing with the intermittent gear 9 are arranged on the circumferential outer wall of the slewing ring 17 near the intermittent gear 9; the intermittent up and down movement of the spiral scraper 29 can be realized by the forward pulling of the intermittent gear 9 and the reverse pulling of the reset spring 23.

[0043] Please refer to Figure 10-11 The cross section of the spiral scraper 29 is a right-angled triangle structure, and one of the right-angled sides is attached to the inner wall of the glue barrel 18; the number of teeth of the intermittent gear 9 is less than the number of teeth 171; when in use, when the spiral scraper 29 rises quickly, the adhesive brought up can be reduced, and when it descends, more adhesive can be scraped.

[0044] Please refer to Figure 3The positioning mechanism also includes an anti-twist through hole 401 on another support rod of the Y-shaped fixing frame 4, and a U-shaped stopper 402 is fixed above the anti-twist through hole 401, and the U-shaped stopper 402 and the anti-twist through hole 401 are slidably connected with the same anti-retraction rod 6, and the anti-retraction rod 6 is provided with a tooth at one end close to the pull rod 5, and the outer wall of the pull rod 5 is reserved with a anti-retraction tooth groove engaged with the tooth; a spring clamp is fixed at one end of the anti-retraction rod 6 close to the pull rod 5, and the spring clamp is connected to the U-shaped stopper A return spring 403 is fixed between the surfaces of the block 402; a pull ring is fixed to the bottom end of the stop rod 6; an elliptical ball is fixed to the top of the pull rod 5 for easy pulling, and the piston vacuum barrel 7 is an inclined structure as a whole, and an oblique through hole 102 matching the diameter of the piston vacuum barrel 7 is opened on the mounting and fixing platform 1; through the positioning mechanism, the pull rod 5 can stop at any time when the specified negative pressure value is reached during pulling, and the constant air pressure value can be achieved each time the pressure is measured in conjunction with the setting of the pressure gauge 3.

[0045] When the device is in use, a test leak tube 27 of appropriate inner diameter is selected according to the properties of the fluid, and it is inserted into the stepped groove hole at the bottom of the glue barrel 18, and then the external thread fixing ring 10 is screwed to the top barrel mouth of the glue barrel 18, and then the three corners of the central pressure plate 11 in the tightening mechanism are respectively fixed on the corresponding protruding ear plates 1001; ensure that the bottom ends of the three pressing rods 28 below it press against the top of the test leak tube 27; then rotate the intercepting valve stem 12 downward so that the pressing ball 1201 first seals the top entrance of the test leak tube 27; then pour the adhesive to be tested into the glue barrel 18 to wait for measurement; use a transparent material receiving barrel 20 to screw on the bottom end of the docking threaded disk 19, and then test the airtightness of the material receiving barrel 20 before testing, and the good sealing When testing, quickly pull the pull rod 5 in the piston vacuum barrel 7 upwards, release it when the required negative pressure value is reached, and then open the ball 1201. Under the action of strong negative pressure, the adhesive in the glue barrel 18 is slowly sucked into the receiving barrel 20 at the bottom; while sucking, the spiral scraper 29 scrapes down the adhesive attached to the inner wall of the glue barrel 18 quickly up and slowly down; through the combination of the piston vacuum barrel 7 and the glue barrel 18, when testing the adhesive, select test leak tubes 27 with different apertures, observe the volume of adhesive passing through the test leak tube 27 under the same negative pressure environment and time, so as to obtain data for judging the fluidity of the batch of adhesives. The more adhesive passes through per unit time, the better the fluidity of the batch of adhesives.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adhesive fluidity testing device, comprising a mounting platform (1), the mounting platform (1) comprising a horizontal top mounting platform and two mutually parallel balancing foot rods (101) at the bottom, a vertical connecting plate used to connect the mounting platform and the two supporting rods, characterized in that: A main mounting hole (103) is formed in the middle of the mounting platform at one end away from the connecting plate, and a glue barrel (18) is clamped and fixed in the main mounting hole (103), and the inner wall of the barrel bottom of the glue barrel (18) is provided with a conical bottom structure; and a conical discharge nozzle (182) is provided on the outer wall of the bottom of the glue barrel (18), and a stepped groove hole is formed on the inner wall of the bottom of the glue barrel (18) at the conical discharge nozzle (182), and a test leak tube (27) is clamped in the stepped groove hole; The outer wall of the bottom end of the conical discharge nozzle (182) is sleeved and fixed with a docking threaded disc (19), and the bottom end of the docking threaded disc (19) is screwed with a material receiving barrel (20) with an opening upward and a transparent barrel-shaped structure, and the outer wall of the material receiving barrel (20) is reserved with scale marks; the docking threaded disc (19) is provided with an oblique insertion tube (30) obliquely inserted into the inner cavity of the docking threaded disc (19), and a piston pumping barrel (7) is provided at one end of the mounting platform of the mounting fixing platform (1) close to the connecting plate, and the piston pumping barrel ( A Y-shaped fixing frame (4) is fixed at the top opening of the piston pumping barrel (7), a branch of the Y-shaped fixing frame (4) close to the piston pumping barrel (7) is provided with a pull rod sliding hole (404), and a pull rod (5) extending into the piston pumping barrel (7) is slidably connected in the pull rod sliding hole (404), a piston disc is fixed to one end of the pull rod (5) close to the bottom of the piston pumping barrel (7), and a stop tooth is arranged on the outer wall of the pull rod (5), and a positioning mechanism that is mutually compatible with the stop tooth is arranged at the top of the Y-shaped fixing frame (4); An air extraction pipe (21) is provided between the air inlet at the bottom end of the piston air extraction barrel (7) and the oblique insertion pipe (30); an externally threaded fixing ring (10) is screwed on the circumferential inner wall of the mounting fixing platform (1) near the top end, and a tightening mechanism matched with the test leak tube (27) is provided on the inner wall of the externally threaded fixing ring (10); The circumferential inner wall of the external thread fixing ring (10) is provided with a tightening mechanism, and the tightening mechanism includes protruding ear plates (1001) fixed to the inner wall of the external thread fixing ring (10) in a centrally symmetrical manner, and the upper surfaces of the protruding ear plates (1001) are all provided with screw holes; the positioning mechanism includes a central pressure plate (11) fixed to the three protruding ear plates (1001) by bolts, and a counter nut (1101) is embedded in the middle of the central pressure plate (11), a retaining valve stem (12) extending vertically downward is screwed in the middle of the counter nut (1101), and a counter ball (1201) is fixed to the bottom end of the retaining valve stem (12); a spherical chamfer matching the diameter of the counter ball (1201) is provided at the top entrance of the test leak tube (27); Three guide tubes (1103) are fixed near the center of the lower surface of the central pressure plate (11) and are symmetrically distributed. The bottom ends of the guide tubes (1103) are slidably plugged with pressure rods (28), and the top ends of the pressure rods (28) are fixed with buffer springs (1102). The top ends of the buffer springs (1102) are fixed to the lower surface of the central pressure plate (11); the bottom ends of the three pressure rods (28) are in contact with the upper surface of the same test leak tube (27); The positioning mechanism also includes an anti-twist through hole (401) formed on another support rod of the Y-shaped fixing frame (4), and a U-shaped stopper (402) is fixed above the anti-twist through hole (401), and the U-shaped stopper (402) and the anti-twist through hole (401) are slidably connected to the same anti-retraction rod (6), and the anti-retraction rod (6) is provided with a stopper tooth at one end close to the pull rod (5), and the outer wall of the pull rod (5) is reserved with an anti-retraction tooth groove meshing with the stopper tooth; A spring clamp is fixed to one end of the stop rod (6) close to the pull rod (5), and a return spring (403) is fixed between the spring clamp and the surface of the U-shaped stopper (402); a pull ring is fixed to the bottom end of the stop rod (6); an elliptical ball is fixed to the top end of the pull rod (5) for easy lifting; the piston pump barrel (7) is an inclined structure as a whole, and an oblique through hole (102) matching the diameter of the piston pump barrel (7) is opened on the mounting and fixing platform (1).

2. The adhesive fluidity testing device according to claim 1, characterized in that: The butt-jointed threaded disc (19) comprises a first cylindrical barrel with two openings opposite to each other and with different diameters, a second cylindrical basin and an intermediate connecting pipe; the intermediate connecting pipe is welded between the two to form a connection between the two, the connecting pipe in the middle coincides with the center line of the test leak tube (27), and the inner diameter of the connecting pipe is greater than the outer diameter of the test leak tube (27); the bottom end of the test leak tube (27) protrudes from the lowest end of the connecting pipe and penetrates into the interior of the receiving barrel (20) close to the top end.

3. The adhesive fluidity testing device according to claim 2, characterized in that: A sealing ring groove is formed on the top inner wall of the columnar basin 2 near the circumferential edge, and a sealing ring (31) is clamped in the sealing ring groove. The cross section of the sealing ring (31) is an inverted trapezoid, which can improve the anti-falling effect; and the diameter of the sealing ring (31) is compatible with the diameter of the top pipe opening of the material receiving barrel (20); the oblique insertion pipe (30) is obliquely inserted at the bottom of the columnar basin 2, and the columnar barrel 1 is sealed and connected to the circumferential outer wall of the conical discharge nozzle (182); and the circumferential inner wall of the columnar basin 2 is formed with a self-locking thread.

4. The adhesive fluidity testing device according to claim 1, characterized in that: A three-way connecting pipe (26) is fixed between the air inlet end of the piston air extraction barrel (7) and the air extraction pipe (21), and the other air outlet of the three-way connecting pipe (26) is connected to a pressure gauge (3).

5. The adhesive fluidity testing device according to claim 1, characterized in that: A control box (2) is fixed on the front side of the mounting platform of the mounting fixing platform (1), and a rotation groove is provided on one side of the mounting platform located on the control box (2) for mounting a pressure gauge (3).

6. The adhesive fluidity testing device according to claim 1, characterized in that: A guide ear plate (22) is fixed to the circumferential inner wall of the external threaded fixing ring (10) between two adjacent protruding ear plates (1001), and a vertical through hole is opened at the top of each guide ear plate (22), a reciprocating push rod (25) is slidably connected in the through hole, and a spiral scraper (29) attached to the inner wall of the glue barrel (18) is fixed to the bottom end of the reciprocating push rod (25); an annular retaining ring (24) is fixed to the circumferential outer wall of the reciprocating push rod (25) near the lower surface of the guide ear plate (22), and a return spring (23) is fixed between the top of the annular retaining ring (24) and the lower surface of the guide ear plate (22); and a fixing strip (13) distributed symmetrically with respect to the center is fixed to the top of each reciprocating push rod (25).

7. The adhesive fluidity testing device according to claim 6, characterized in that: The outer circumferential wall of the glue barrel (18) is provided with three equidistantly distributed vertical sections (181), and an L-shaped pulley frame (15) is fixed at the same height of each section (181), and each pulley frame (15) is provided with a fixed pulley (32), and the outer circumferential wall of the fixed pulley (32) is provided with a rope groove; the outer circumferential wall of the glue barrel (18) is provided with an annular groove (183) near the pulley frame (15), and an annular slide rail (16) is embedded in the annular groove (183), and the inner rotatable part of the annular slide rail (16) is connected to a slewing ring (11) 7), three rope fixing blocks (172) are fixed to the circumferential outer wall of the slewing ring (17), and a pull rope (14) is fixed to each of the rope fixing blocks (172), and the pull rope (14) is passed around the fixed pulley (32) and fixed to the corresponding fixing bar (13); a reduction motor (8) is fixed to the top of the mounting fixing platform (1) near the piston pumping barrel (7), and an intermittent gear (9) is fixed to the top of the output shaft of the reduction motor (8), and teeth (171) that mesh with the intermittent gear (9) are provided on the circumferential outer wall of the slewing ring (17) near the intermittent gear (9).

8. The adhesive fluidity testing device according to claim 7, characterized in that: The cross section of the spiral scraper (29) is a right-angled triangle structure, and one of the right-angled sides is attached to the inner wall of the glue barrel (18); the number of teeth of the intermittent gear (9) is less than the number of teeth (171).

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