Viscosity detection device for epoxy curing agent

By designing a viscosity testing device for epoxy curing agents suitable for packaging barrels, and using the packaging barrels as supports, the viscosity of epoxy curing agents can be tested on-site, solving the problem of needing to take samples out and send them to the testing laboratory in the existing technology, and improving the convenience and accuracy of the test.

CN122016641APending Publication Date: 2026-05-12KUNSHAN YULEI MASCH EQUIP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUNSHAN YULEI MASCH EQUIP CO LTD
Filing Date
2026-03-04
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing epoxy curing agent viscosity testing facilities require samples to be taken out and sent to a testing laboratory for testing, which makes the testing inconvenient and impossible to conduct on-site.

Method used

An epoxy curing agent viscosity testing device was designed. Using a packaging barrel as a support, the device achieves testing next to the packaging barrel through a combination of a carrier ring, a Z-shaped clamp, and a transparent tube. It is adaptable to packaging barrels of different diameters and heights, keeps the transparent tube vertical, and uses an electromagnetic sensor to detect the viscosity.

Benefits of technology

This technology enables viscosity testing of epoxy curing agents right next to the packaging drum, improving the convenience and accuracy of the testing. It is adaptable to packaging drums of different sizes, ensuring the reliability of the test results.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122016641A_ABST
    Figure CN122016641A_ABST
Patent Text Reader

Abstract

The invention relates to the field of viscosity detection, in particular to an epoxy curing agent viscosity detection device which comprises two symmetrically-arranged carrying rings, the front ends of the two carrying rings extend to form supporting plates, a first connecting shaft is embedded between the upper ends of the two supporting plates in a penetrating mode, and a Z-shaped supporting and clamping frame is rotationally installed on the outer surface of the first connecting shaft; the rear ends of the two supporting plates extend to form extending lugs, an extending piece is installed at the front end of the Z-shaped supporting and clamping frame, a ball support is installed at the end of the extending piece, a pipe hanging ball is rotationally installed in the ball support, a ball column extends to the lower end of the pipe hanging ball, and the ball column extends out of the lower end of the ball support. According to the invention, on-site detection can be carried out by using a packaging barrel as a support, the detection convenience is effectively improved, the viscosity detection accuracy is ensured, the device can adapt to packaging barrels of different sizes, and the detection flexibility is effectively improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of viscosity testing, and more particularly to a device for testing the viscosity of epoxy curing agents. Background Technology

[0002] Epoxy curing agents are functional substances that can chemically react with epoxy resins, causing linear resins to crosslink into a three-dimensional network structure, thereby achieving curing and molding. Epoxy curing agents directly affect the curing speed, mechanical properties, and corrosion resistance of epoxy resins. To determine whether an epoxy curing agent meets relevant standards, its viscosity is typically tested.

[0003] However, most existing testing facilities are located in testing rooms. For example, when testing the viscosity of epoxy curing agent in packaging barrels in the material discharge area, the epoxy curing agent needs to be taken out and sent to the testing room before testing can be carried out. This process cannot be carried out on-site, making the testing inconvenient. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing an epoxy curing agent viscosity testing device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an epoxy curing agent viscosity testing device, comprising two symmetrically arranged carrier rings, each carrier ring having a support plate extending from its front end, a connecting shaft numbered 1 through the upper ends of the two support plates, a Z-shaped bracket rotatably mounted on the outer surface of the connecting shaft numbered 1, protruding ears extending from the rear ends of the two support plates, an extension member mounted at the front end of the Z-shaped bracket, a ball holder mounted at the end of the extension member, a hanging tube ball rotatably mounted inside the ball holder, a ball column extending from the lower end of the hanging tube ball, the ball column extending from the lower end of the ball holder, two tube supports symmetrically extending from the lower end of the ball column, a guide tube ball fixedly mounted between the lower ends of the two tube supports, a testing element disposed between the two tube supports, an adjusting column frame slidably mounted at the rear ends of each of the two carrier rings, a clamping column connected to one end of the adjusting column frame, an L-shaped ear extending from the upper edge of the adjusting column frame, and an adjusting element disposed between the two adjusting column frames.

[0006] Preferably, the inner surface of the ball holder is equipped with a ring array of multiple balls, which are attached to the lower part of the outer surface of the hanging tube ball.

[0007] Preferably, the adjusting component includes two No. 2 connecting shafts that are rotatably mounted through the other end of the two adjusting column frames. One of the No. 2 connecting shafts has an adjusting sleeve embedded on its outer surface, and the other of the No. 2 connecting shafts has an adjusting frame embedded on its outer surface. The adjusting sleeve is slidably mounted on the outer surface of the adjusting frame, and a No. 1 bolt is screwed through the upper edge of the adjusting sleeve. The end of the No. 1 bolt presses against the adjusting frame.

[0008] Preferably, the extension member includes an extension shell fixedly installed at the front end of the Z-shaped support bracket, a T-shaped extension frame slidably installed inside the extension shell, the T-shaped extension frame extending through the upper end of the extension shell, a connecting frame fixedly installed at the upper edge of the front end of the T-shaped extension frame, the end of the connecting frame being fixed to the ball support, and a No. 2 bolt being screwed through the lower edge of the front end of the T-shaped extension frame, the end of the No. 2 bolt abutting against the inner surface of the extension shell.

[0009] Preferably, the detection element includes a transparent tube disposed between two tube supports, the center line of the transparent tube being aligned with the center of the hanging tube ball and the center of the leading tube ball, a detection steel ball being disposed in the upper middle part of the transparent tube, an electromagnet being attracted to the upper end of the detection steel ball, and the electromagnet being fixed to one of the tube supports.

[0010] Preferably, the lower end of the transparent tube is screwed with a threaded cap, and an electromagnetic sensor is embedded through the middle of the lower end of the threaded cap. The sensing end of the electromagnetic sensor is flush with the upper end of the threaded cap, and a timing controller is fixedly installed at the lower end of the extended shell.

[0011] Preferably, two tube lugs are symmetrically fitted at the lower end edge of the threaded cap, and the ends of the two tube lugs are respectively fixed to two tube supports. A fixing tube clamp is fitted at the rear end face of the transparent tube, and the two ends of the fixing tube clamp are respectively fixed to two tube supports. A limiting tube clamp is fitted at the front end face of the transparent tube.

[0012] Preferably, a clamping seat is rotatably mounted on one end of the limiting pipe clamp, and the end of the clamping seat is fixed to one of the pipe supports. A support frame is fixedly mounted on the side of the other pipe support, and a fixed clamping hook is rotatably mounted on the end of the support frame. The fixed clamping hook presses against the other end of the limiting pipe clamp. A hook plate extends from the rear edge of the side of the fixed clamping hook. The fixed clamping hook and the hook plate are integrally formed. A return spring is fixedly mounted between the rear end of the hook plate and the front end of the support frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By placing the carrier ring on both sides of the packaging barrel, the L-shaped ears and protruding ears press against the top of the packaging barrel, while the barrel clamping column adheres to the surface of the packaging barrel. Then, release the Z-shaped support bracket, allowing the Z-shaped support bracket to rotate around the No. 1 connecting shaft under the weight of the transparent tube, so that the rear end of the Z-shaped support bracket can press against the packaging barrel, thereby fixing it to the packaging barrel. The packaging barrel is used as a support to support the transparent tube. Then, the epoxy curing agent taken from the packaging barrel can be placed in the transparent tube for testing. That is, testing can be carried out next to the packaging barrel, without having to take it out in the material discharge area and send it to the testing room for testing. This achieves the purpose of on-site testing and effectively improves the convenience of testing.

[0014] 2. Under the weight of the tube ball, the hanging tube ball can rotate inside the ball holder, thereby driving the transparent tube to move. This allows the suspended transparent tube to remain vertical, so that even if the packaging barrel is tilted due to uneven ground, the transparent tube supported by the packaging barrel can still remain vertical. This avoids the detection steel ball from contacting the inner wall of the transparent tube when it falls, which would affect the viscosity test results, thus ensuring the accuracy of the viscosity test.

[0015] 3. By loosening bolt number one, the fixed adjusting frame and adjusting sleeve can be moved. Then, by pushing the adjusting sleeve, the two adjusting column frames can be moved synchronously. At this time, the adjusting frame slides within the adjusting sleeve to adapt to the movement of the adjusting column frames. The moving adjusting column frames drive the movement of the clamping column to adjust the space between the clamping column and the Z-shaped support frame to accommodate packaging barrels of different diameters. At the same time, bolt number two can be loosened to move the fixed T-shaped extension frame. Then, the T-shaped extension frame inside the extension shell can be pushed upward to adjust the suspension height of the transparent tube to accommodate packaging barrels of different heights. This ensures that when using packaging barrels with lower height as supports, the transparent tube will not touch the ground due to insufficient height, affecting the detection. This adapts to packaging barrels of different sizes and improves the flexibility of detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an epoxy curing agent viscosity testing device according to the present invention; Figure 2 This is a schematic diagram of the adjusting sleeve of an epoxy curing agent viscosity testing device according to the present invention; Figure 3 This is a schematic diagram of the Z-shaped bracket of the epoxy curing agent viscosity testing device of the present invention; Figure 4 This is a schematic diagram of the transparent tube of an epoxy curing agent viscosity testing device according to the present invention; Figure 5 This is an exploded view of the hanging tube ball and ball support of an epoxy curing agent viscosity testing device according to the present invention; Figure 6This is a schematic diagram of the limiting clamp of an epoxy curing agent viscosity testing device according to the present invention; Figure 7 This invention relates to a viscosity testing device for epoxy curing agents. Figure 1 Enlarged view of A in the middle; Figure 8 This is a view showing the use of an epoxy curing agent viscosity testing device according to the present invention.

[0017] In the diagram: 1. Carrying ring; 2. Bucket clamping column; 3. Adjusting frame; 4. Adjusting sleeve; 5. Z-shaped support clamp; 6. Pipe hanging ball; 7. Transparent tube; 8. Limiting pipe clamp; 9. Lead-in pipe ball; 10. Timing controller; 11. Extending ear; 12. No. 1 connecting shaft; 13. Support plate; 14. T-shaped extension frame; 15. Connecting frame; 16. Extension shell; 17. Ball column; 18. Threaded cap; 19. Electromagnetic sensor; 20. Fixed pipe clamp; 21. Pipe rack; 22. Ball support; 23. Electromagnet; 24. Detection steel ball; 25. Ball bearing; 26. No. 1 bolt; 27. L-shaped ear; 28. Adjusting column frame; 29. ​​No. 2 bolt; 30. Fixed clamp hook; 31. Hook plate; 32. Return spring; 33. Bearing frame; 34. Clamp seat; 35. No. 2 connecting shaft; 36. Support ear; 37. Packaging barrel. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figures 1-8The epoxy curing agent viscosity testing device shown includes two symmetrically arranged carrier rings 1. Each carrier ring 1 has a support plate 13 extending from its front end. A connecting shaft 12 is embedded between the upper ends of the two support plates 13, supporting the connecting shaft 12. A Z-shaped bracket 5 is rotatably mounted on the outer surface of the connecting shaft 12, allowing the Z-shaped bracket 5 to rotate. Extending ears 11 extend from the rear ends of the two support plates 13, pressing against the top of the packaging drum 37. An extension piece is mounted at the front end of the Z-shaped bracket 5, and a ball support 22 is mounted at the end of the extension piece. A hanging tube ball 6 is rotatably mounted inside the ball support 22, supporting the hanging tube ball 6. A ball column 17 extends from the lower end of the hanging tube ball 6, protruding from the lower end of the ball support 22. Two tube supports 21 extend symmetrically from the ends. A tube ball 9 is fixedly installed between the lower ends of the two tube supports 21. Under the gravity of the tube ball 9, the hanging tube ball 6 can rotate within the ball support 22, thereby driving the transparent tube 7 to move and keeping the suspended transparent tube 7 vertical. A detection element is set between the two tube supports 21. An adjusting column frame 28 is slidably installed at the rear ends of the two carrier rings 1. One end of the adjusting column frame 28 is connected to the clamping column 2. The Z-shaped support clamp 5 rotates around the first connecting shaft 12 under the gravity of the transparent tube 7, so that the rear end of the Z-shaped support clamp 5 can press against the packaging barrel 37. At this time, it can be fixed with the packaging barrel 37 in conjunction with the clamping column 2. An L-shaped ear 27 extends from the upper edge of the adjusting column frame 28. The adjusting column frame 28 plays the role of bearing the clamping column 2 and the L-shaped ear 27. An adjusting element is set between the two adjusting column frames 28.

[0020] The inner surface of the ball support 22 is equipped with a ring array of multiple balls 25. The balls 25 are attached to the lower part of the outer surface of the hanging ball 6. The balls 25 can rotate to reduce friction and facilitate the rotation of the hanging ball 6.

[0021] The adjusting components include two No. 2 connecting shafts 35 that are rotatably mounted through the other end of the two adjusting column frames 28. The No. 2 connecting shafts 35 serve as a connection. One No. 2 connecting shaft 35 has an adjusting sleeve 4 embedded in its outer surface, and the other No. 2 connecting shaft 35 has an adjusting frame 3 embedded in its outer surface. The adjusting sleeve 4 is slidably mounted on the outer surface of the adjusting frame 3. The adjusting sleeve 4 and the adjusting frame 3 allow the two adjusting column frames 28 to move synchronously. A No. 1 bolt 26 is screwed through the upper edge of the adjusting sleeve 4. The No. 1 bolt 26 serves as a fixation. The end of the No. 1 bolt 26 presses against the adjusting frame 3. Loosening the No. 1 bolt 26 can drive the fixed adjusting frame 3 and adjusting sleeve 4 to move. Then, pushing the adjusting sleeve 4 allows the two adjusting column frames 28 to move synchronously. At this time, the adjusting frame 3 slides inside the adjusting sleeve 4 to adapt to the movement of the adjusting column frames 28. The moving adjusting column frames 28 drive the movement of the clamping column 2 to adjust the space between the clamping column 2 and the Z-shaped support frame 5 to accommodate packaging drums 37 of different diameters.

[0022] The extension component includes an extension shell 16 fixedly installed at the front end of the Z-shaped bracket 5. A T-shaped extension frame 14 is slidably installed inside the extension shell 16, supporting the T-shaped extension frame 14. The T-shaped extension frame 14 extends through the upper end of the extension shell 16. A connecting frame 15 is fixedly installed at the upper edge of the front end of the T-shaped extension frame 14. The end of the connecting frame 15 is fixed to the ball support 22, thus securing the ball support 22. The lower front end of the T-shaped extension frame 14... A No. 29 bolt is screwed through the edge, and the end of the No. 29 bolt rests against the inner surface of the extension shell 16. Loosening the No. 29 bolt causes the fixed T-shaped extension frame 14 to move. Then, the T-shaped extension frame 14 inside the extension shell 16 is pushed upward, so that the suspension height of the transparent tube 7 can be adjusted to accommodate packaging barrels 37 of different heights. This ensures that when using a packaging barrel 37 with a lower height as a support, the transparent tube 7 will not come into contact with the ground due to insufficient height, thus affecting the detection.

[0023] The testing component includes a transparent tube 7 disposed between two tube supports 21. The centerline of the transparent tube 7 is aligned with the center of the hanging tube ball 6 and the center of the leading tube ball 9, which facilitates the transparent tube 7 to remain vertical under the action of the leading tube ball 9. A testing steel ball 24 is disposed in the upper middle part of the transparent tube 7. An electromagnet 23 is attracted to the upper end of the testing steel ball 24. The electromagnet 23 plays the role of attracting and fixing the testing steel ball 24. The electromagnet 23 is fixed to one of the tube supports 21.

[0024] A threaded cap 18 is screwed onto the lower end of the transparent tube 7. The threaded cap 18 serves to seal the bottom of the transparent tube 7. An electromagnetic sensor 19 is embedded through the middle of the lower end of the threaded cap 18. The sensing end of the electromagnetic sensor 19 is flush with the upper surface of the threaded cap 18, which facilitates the detection of the steel ball 24 falling to the bottom and being sensed by the electromagnetic sensor 19. A timer controller 10 is fixedly installed at the lower end of the extension shell 16. A battery can also be installed in the extension shell 16 to power the timer controller 10, the electromagnetic sensor 19, and the electromagnet 23.

[0025] Two support ears 36 are symmetrically fitted at the lower edge of the threaded cap 18. The support ears 36 support the transparent tube 7. The ends of the two support ears 36 are fixed to the two tube supports 21 respectively. A fixing clamp 20 is fitted to the rear end face of the transparent tube 7. The two ends of the fixing clamp 20 are fixed to the two tube supports 21 respectively. A limiting clamp 8 is fitted to the front end face of the transparent tube 7. The cooperation between the fixing clamp 20 and the limiting clamp 8 fixes the transparent tube 7 between the two tube supports 21.

[0026] A clamping seat 34 is rotatably mounted on one end of the limiting pipe clamp 8. The end of the clamping seat 34 is fixed to one of the pipe supports 21. The clamping seat 34 serves to connect the limiting pipe clamp 8. A support frame 33 is fixedly mounted on the side of the other pipe support 21. A fixing hook 30 is rotatably mounted on the end of the support frame 33. The support frame 33 serves to support the fixing hook 30. The fixing hook 30 presses against the other end of the limiting pipe clamp 8. A hook plate 31 extends from the rear edge of the side of the fixing hook 30. The 0 is integrally formed with the hook plate 31. The hook plate 31 facilitates the movement of the fixed clamp 30. A return spring 32 is fixedly installed between the rear end of the hook plate 31 and the front end of the support frame 33. The return spring 32 presses the fixed clamp 30 against the limiting tube clamp 8. By moving the hook plate 31, the fixed clamp 30 can be rotated to disengage from the limiting tube clamp 8. Then the limiting tube clamp 8 can be moved to open the limiting tube clamp 8, allowing the transparent tube 7 to be removed for cleaning and other operations.

[0027] During testing, first loosen bolt 26 according to the diameter of the packaging drum 37 to move the fixed adjusting frame 3 and adjusting sleeve 4. Then push the adjusting sleeve 4 to move the two adjusting column frames 28 synchronously. At this time, the adjusting frame 3 slides within the adjusting sleeve 4 to adapt to the movement of the adjusting column frame 28. The moving adjusting column frame 28 drives the barrel clamping column 2 to move, thereby adjusting the space between the barrel clamping column 2 and the Z-shaped support frame 5 to adapt to the diameter of the packaging drum 37. At the same time, bolt 29 can be loosened to move the fixed T-shaped extension frame 14. The activity involves pushing the T-shaped extension frame 14 inside the extension shell 16 upwards to adjust the suspension height of the transparent tube 7 to fit the height of the packaging drum 37. Then, the carrier ring 1 is placed on both sides of the packaging drum 37. At this time, the L-shaped ears 27 and the protruding ears 11 press against the top of the packaging drum 37, while the clamping column 2 adheres to the surface of the packaging drum 37. Then, the Z-shaped support bracket 5 is released, allowing it to rotate around the first connecting shaft 12 under the weight of the transparent tube 7, so that the rear end of the Z-shaped support bracket 5 can press against the packaging drum 37, thus securing it. The transparent tube 7 is supported by a packaging drum 37. The epoxy curing agent taken from the packaging drum 37 is then filled into the transparent tube 7. At this point, the lower end of the testing steel ball 24 is attached to the upper surface of the epoxy curing agent inside the transparent tube 7. Simultaneously, under the weight of the guide tube ball 9, the suspension ball 6 rotates within the ball support 22, thereby moving the transparent tube 7 and ensuring it remains vertical. This ensures that even if the packaging drum 37 tilts due to uneven ground, the transparent tube 7, supported by the packaging drum 37, will still remain vertical. To prevent the detection steel ball 24 from contacting the inner wall of the transparent tube 7 during its fall and affecting the viscosity test results, the timing controller 10 then controls the electromagnet 23 to release its adsorption of the detection steel ball 24 and simultaneously starts timing, causing the detection steel ball 24 to fall into the epoxy curing agent inside the transparent tube 7. When the detection steel ball 24 continues to fall into the epoxy curing agent to the bottom, it will be sensed by the electromagnetic sensor 19, which will simultaneously send a signal to stop the timing controller 10. Based on the time it takes for the detection steel ball 24 to fall into the epoxy curing agent, the viscosity of the epoxy curing agent can be determined to be qualified.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A viscosity testing device for epoxy curing agents, comprising two symmetrically arranged carrier rings (1), characterized in that: The front ends of the two carrier rings (1) are each extended with a support plate (13). A connecting shaft (12) is inserted between the upper ends of the two support plates (13). A Z-shaped bracket (5) is rotatably mounted on the outer surface of the connecting shaft (12). The rear ends of the two support plates (13) are extended with protruding ears (11). An extension piece is installed at the front end of the Z-shaped bracket (5). A ball holder (22) is installed at the end of the extension piece. A hanging tube ball (6) is rotatably mounted inside the ball holder (22). A ball column (17) extends from the lower end of the hanging tube ball (6). The ball column (17) extends from the lower end of the ball support (22). Two tube supports (21) extend symmetrically from the lower end of the ball column (17). A guide tube ball (9) is fixedly installed between the lower ends of the two tube supports (21). A detection element is provided between the two tube supports (21). An adjusting column frame (28) is slidably installed at the rear ends of the two carrier rings (1). One end of the adjusting column frame (28) is connected to a clamping column (2). An L-shaped ear (27) extends from the upper edge of the adjusting column frame (28). An adjusting element is provided between the two adjusting column frames (28).

2. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The inner surface of the ball holder (22) is equipped with a ring array of multiple balls (25), which are attached to the lower part of the outer surface of the hanging tube ball (6).

3. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The adjusting component includes two No. 2 connecting shafts (35) that are rotatably mounted through the other end of the two adjusting column frames (28). One of the No. 2 connecting shafts (35) has an adjusting sleeve (4) embedded on its outer surface, and the other No. 2 connecting shaft (35) has an adjusting frame (3) embedded on its outer surface. The adjusting sleeve (4) is slidably mounted on the outer surface of the adjusting frame (3). A No. 1 bolt (26) is screwed through the upper edge of the adjusting sleeve (4), and the end of the No. 1 bolt (26) presses against the adjusting frame (3).

4. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The extension component includes an extension shell (16) fixedly installed at the front end of the Z-shaped bracket (5). A T-shaped extension frame (14) is slidably installed inside the extension shell (16). The T-shaped extension frame (14) extends through the upper end of the extension shell (16). A connecting frame (15) is fixedly installed at the upper edge of the front end of the T-shaped extension frame (14). The end of the connecting frame (15) is fixed to the ball support (22). A No. 2 bolt (29) is screwed through the lower edge of the front end of the T-shaped extension frame (14). The end of the No. 2 bolt (29) abuts against the inner surface of the extension shell (16).

5. The epoxy curing agent viscosity testing device according to claim 4, characterized in that: The detection device includes a transparent tube (7) disposed between two tube supports (21). The center line of the transparent tube (7) is aligned with the center of the hanging tube ball (6) and the center of the leading tube ball (9). A detection steel ball (24) is disposed in the upper middle part of the transparent tube (7). An electromagnet (23) is attracted to the upper end of the detection steel ball (24). The electromagnet (23) is fixed to one of the tube supports (21).

6. The epoxy curing agent viscosity testing device according to claim 5, characterized in that: The lower end of the transparent tube (7) is screwed with a threaded cap (18), and an electromagnetic sensor (19) is embedded through the middle of the lower end of the threaded cap (18). The sensing end of the electromagnetic sensor (19) is flush with the upper end of the threaded cap (18). A timing controller (10) is fixedly installed at the lower end of the extended shell (16).

7. The epoxy curing agent viscosity testing device according to claim 6, characterized in that: Two support ears (36) are symmetrically fitted at the lower end edge of the threaded cap (18). The ends of the two support ears (36) are respectively fixed to two pipe supports (21). A fixing pipe clamp (20) is fitted to the rear end face of the transparent tube (7). The two ends of the fixing pipe clamp (20) are respectively fixed to two pipe supports (21). A limiting pipe clamp (8) is fitted to the front end face of the transparent tube (7).

8. The epoxy curing agent viscosity testing device according to claim 7, characterized in that: One end of the limiting pipe clamp (8) is rotatably mounted with a clamp seat (34). The end of the clamp seat (34) is fixed to one of the pipe supports (21). The side of the other pipe support (21) is fixedly mounted with a support frame (33). The end of the support frame (33) is rotatably mounted with a clamp hook (30). The clamp hook (30) presses against the other end of the limiting pipe clamp (8). A hook plate (31) extends from the rear edge of the side of the clamp hook (30). The clamp hook (30) and the hook plate (31) are integrally formed. A return spring (32) is fixedly mounted between the rear end of the hook plate (31) and the front end of the support frame (33).