Device for sealant fluidity test

Abstract

The utility model discloses a device for a sealant fluidity test, which comprises a test board, a cylindrical counter bore for accommodating sealant is arranged on the test board, and a plunger is movably connected in the counter bore by penetrating through the test board; two fixing seats are oppositely arranged on one side of the base, a rotating rod is rotationally connected between the two fixing seats, and one end, far away from the counter bore, of the test plate is relatively and fixedly connected with the rotating rod; a rotary driving mechanism is arranged on the base, a driving shaft of the rotary driving mechanism is connected with the rotating rod, and the rotating rod is driven to rotate to drive the test board to realize switching between a horizontal placement position and a vertical placement position; a vertical column is arranged on the base, a linear driving mechanism is arranged on the vertical column, the output end of the linear driving mechanism is connected with a push rod, the axis of the push rod and the axis of the counter bore when the test plate is vertically placed are on the same straight line, and the linear driving mechanism is used for pushing the plunger. Test operation is completed in an automatic and mechanical mode, the test operation is simpler and more reliable, and test data are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a device for testing the fluidity of sealant. Background Art

[0002] The uses of aviation two-component sealants in the aviation field mainly include: 1. Aircraft maintenance - used for waterproofing, sealing and protecting important parts of aircraft, such as aircraft fuel tanks, cockpits, etc.; 2. Airport construction - used for anti-skid and waterproofing treatment of ground markings, runways, aprons, etc.; 3. Mechanical equipment maintenance - used in the sealing and protection of mechanical equipment. Aviation two-component sealants need to be tested in accordance with the standard test method for two-component synthetic rubber mixtures of aerospace sealants. The sealant flow test is a test in this method. The so-called flowability refers to: the deformation of the sealant morphology or adhesive layer. This test is used to evaluate the droop of the sealant when applied at room temperature, that is, during the application and curing period, the sealant moves downward under the action of gravity, resulting in the drooping characteristics of an uneven coating.

[0003] The traditional sealant fluidity test device (plug method) is shown in Figure 1(a). A cylindrical hole of known size (diameter (38±0.05) mm) is drilled on the metal block. A plunger is movably arranged in the cylindrical hole. The surface of the device below the cylindrical hole is marked with a scale. In Figure 1(a), mark 1 is the hole depth, 2 is the scale, 3 is the plunger, and 4 is the diameter of the hole. The test principle is: fill the sealant into a hole of known size and push it out with the plunger on the flow test device to form a sealant plug. Then place the flow test device vertically in the test environment and measure the sagging distance of the plug within a specified time. The specific test steps are: place the test device on a horizontal plane with the drilled surface facing up, press the plunger into a hole with a depth of 9.5 mm, use a suitable method to fully mix or stir the sealant, fill the hole with sealant and ensure that no bubbles are formed, use a scraper to pull the excess sealant from one end of the scale to the other end, so that the sealant surface is flush with the surface of the metal block. Then push the plunger to its limit stroke so that its surface is flush with the surface of the metal block, so that the sealant to be tested forms a cylindrical plug on the plane of the metal block. Immediately place the plug vertically on the upper device and avoid vibration. Place it in the test environment for a specified time. At the end of the test, accurately read the scale at the lowest point where the plug flows. The state diagrams of the plug before and after the test are shown in Figure 1(b) and Figure 1(c), respectively.

[0004] In the actual test process, since the actions of pushing out the plunger and flipping the device from a horizontal position to a vertical position are all completed by the test personnel, manual operation will inevitably lead to problems such as shaking and uneven force, which will affect the accuracy of the test data. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a device for testing the fluidity of sealant, which simplifies the test operation and provides the accuracy of the test data.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0007] A device for testing the fluidity of sealant comprises a test plate, the test plate is provided with a cylindrical countersunk hole for accommodating sealant, a plunger is movably connected to the countersunk hole through the test plate; the base is also provided with two fixed seats arranged opposite to each other on one side of the base, a rotating rod is rotatably connected between the two fixed seats, and one end of the test plate away from the countersunk hole is relatively fixedly connected to the rotating rod; a rotary drive mechanism is provided on the base, the driving shaft of the rotary drive mechanism is connected to the rotating rod, and the rotating rod is driven to rotate and drive the test plate to switch between a horizontal position and a vertical position; a column is provided on the base, and a linear drive mechanism is provided on the column, the output end of the linear drive mechanism is connected to a push rod, the axis of the push rod is on the same straight line with the axis of the countersunk hole when the test plate is in the vertical position, and the linear drive mechanism is used to push the plunger.

[0008] Preferably, the test plate is connected to a rotating rod key.

[0009] Furthermore, the rotary drive mechanism is a rotary motor, which is located outside a fixed seat, and a drive shaft of the rotary motor passes through the fixed seat and is connected to the rotating rod.

[0010] Furthermore, the rotating motor is a reversible stepping motor, and each rotation angle is 90°.

[0011] Furthermore, a first button group is installed on the base, and the first button group is used to control the rotation drive mechanism. The first button group includes a forward button and a reverse button.

[0012] Furthermore, a pad is provided on the upper surface of the base at one side of the fixing seat, and the pad is used to support the countersunk end of the test plate.

[0013] Preferably, the linear drive mechanism is a linear motor.

[0014] Another preferred embodiment is that the linear drive mechanism is a hydraulic pusher.

[0015] Furthermore, a second button group is installed on the base, and the second button group is used to control the linear drive mechanism. The second button group includes an extension button and a retraction button.

[0016] Furthermore, the test plate is provided with scale lines, and the first line of the scale lines is tangent to the lowest point of the circumference of the countersunk hole.

[0017] The beneficial effects of the utility model are:

[0018] The utility model installs a test plate on a base, drives the test plate to switch between a horizontal position and a vertical position through a rotary drive mechanism, pushes out a plunger through a linear drive mechanism, and completes the operation in an automatic mechanized manner, thereby avoiding the influence of shaking or uneven force during manual operation on the test result, making the test operation simpler and more reliable, and the test data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1(a) is a schematic diagram of a conventional flow test apparatus;

[0021] Figure 1(b) is a state diagram of the rubber plug before the test;

[0022] Figure 1(c) is a state diagram of the rubber plug after the test;

[0023] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model (the test board is in a horizontal position);

[0024] Figure 3 It is a schematic diagram of the structure of an embodiment of the utility model (the test board is in the setting placement position).

[0025] Figure numerals: 1-base, 2-test plate, 11-fixed seat, 12-rotating rod, 13-column, 14-pad, 21-counter hole, 22-plunger, 23-scale line, 3-rotational drive mechanism, 4-linear drive mechanism, 41-push rod, 5-first button group, 6-second button group. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians of the art without making creative work are within the scope of protection of the present application.

[0027] A device for testing the fluidity of sealants, such as Figure 2 , Figure 3 As shown, it includes a base 1 and a test plate 2, the test plate 2 is provided with a cylindrical countersunk hole 21 for accommodating sealant, and a plunger 22 is movably connected to the countersunk hole 21 that passes through the test plate 2; two fixed seats 11 are relatively arranged on one side of the base 1, and a rotating rod 12 is rotatably connected between the two fixed seats 11, and one end of the test plate 2 away from the countersunk hole 21 is relatively fixedly connected to the rotating rod 12. Preferably, the test plate 2 is key-connected to the rotating rod 12; a rotary drive mechanism 3 is provided on the base 1, and a driving shaft of the rotary drive mechanism 3 is connected to the rotating rod 12 to drive the rotating rod 12 to rotate; a column 13 is also provided on the base 1, and a linear drive mechanism 4 is provided on the column 13, and the output end of the linear drive mechanism 4 is connected to a push rod 41, and the axis of the push rod 41 is in the same straight line as the axis of the countersunk hole 21 of the test plate 2 in a vertical state, and the linear drive mechanism 4 is used to push the plunger 22.

[0028] Preferably, the rotary drive mechanism 3 is a rotary motor, which is located outside a fixed seat 11. The drive shaft of the rotary motor passes through the fixed seat 11 and is connected to the rotating rod 12. Preferably, the rotary motor is a reversible stepping motor, and each rotation angle is set to 90°. When the test board 2 needs to be adjusted from a horizontal position to a vertical position, the rotary motor drives the rotating rod to drive the test board to rotate 90° clockwise; when the test board 2 needs to be adjusted from a vertical position to a horizontal position, the rotary motor drives the rotating rod to drive the test board to rotate 90° counterclockwise. Preferably, a first button group 5 is installed on the base 1. The first button group 5 is used to control the rotary drive mechanism 3. The first button group 5 includes a forward button and a reverse button. Preferably, a pad 14 is provided on the upper surface of the base 1 on one side of the fixed seat 11. When the test board 2 is in a horizontal position, the pad 14 supports the countersunk end of the test board 2.

[0029] Preferably, the linear drive mechanism 4 is a linear motor or a hydraulic pusher. A second button group 6 is installed on the base 1, and the second button group 6 is used to control the linear drive mechanism 4, and the second button group 6 includes an extension button and a retraction button.

[0030] When using the device to test the fluidity of sealant, first adjust the test plate 2 to be placed horizontally. Figure 2 As shown, the countersunk hole faces upward; fill the countersunk hole 21 with sealant and ensure that no bubbles are formed, scrape off the excess sealant so that the surface of the sealant is flush with the surface of the test plate; turn on the rotary drive mechanism 3, drive the rotating rod 12 to drive the test plate to rotate 90° clockwise to the vertical placement position, as shown Figure 3As shown, the linear drive mechanism 4 is then started to push the push rod 41 to push the plunger 22 until the surface of the plunger 22 is flush with the surface of the test plate, so that the sealant to be tested forms a cylindrical rubber plug on the plane of the test plate and is placed in the test environment for a specified time. At the end of the test, the flow distance of the rubber plug is recorded. Preferably, the test plate 2 is provided with scale lines 23, and the first line of the scale lines 23 is tangent to the lowest point of the circumference of the counterbore 21, so as to facilitate accurate reading of the scale when the rubber plug flows to the lowest point.

[0031] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for testing the fluidity of a sealant, comprising a test plate (2), wherein the test plate (2) is provided with a cylindrical counterbore (21) for accommodating the sealant, wherein a plunger (22) is movably connected to the counterbore (21) and passes through the test plate (2); characterized in that: The invention also comprises a base (1), wherein two fixing seats (11) are arranged opposite to each other on one side of the base (1), a rotating rod (12) is rotatably connected between the two fixing seats (11), and one end of the test plate (2) away from the countersunk hole (21) is relatively fixedly connected to the rotating rod (12); a rotating drive mechanism (3) is arranged on the base (1), a driving shaft of the rotating drive mechanism (3) is connected to the rotating rod (12), and the rotating rod (12) is driven to rotate to drive the test plate (2) to switch between a horizontal placement position and a vertical placement position; a column (13) is arranged on the base (1), and a linear driving mechanism (4) is arranged on the column (13), the output end of the linear driving mechanism (4) is connected to a push rod (41), the axis of the push rod (41) and the axis of the countersunk hole (21) when the test plate (2) is in the vertical placement position are on the same straight line, and the linear driving mechanism (4) is used to push the plunger (22).

2. The device for testing the fluidity of sealant according to claim 1, characterized in that: The test plate (2) is key-connected to the rotating rod (12).

3. The device for testing the fluidity of sealant according to claim 1, characterized in that: The rotary drive mechanism (3) is a rotary motor, which is located outside a fixed seat (11). The drive shaft of the rotary motor passes through the fixed seat (11) and is connected to the rotating rod (12).

4. The device for testing the fluidity of sealant according to claim 3, characterized in that: The rotating motor is a reversible stepping motor, and each rotation angle is 90°.

5. The device for testing the fluidity of sealant according to claim 4, characterized in that: A first button group (5) is mounted on the base (1), the first button group (5) being used to control the rotation drive mechanism (3), the first button group (5) comprising a forward button and a reverse button.

6. The device for testing the fluidity of sealant according to claim 1, characterized in that: A cushion block (14) is provided on the upper surface of the base (1) at one side of the fixing seat (11), and the cushion block (14) is used to support the countersunk end of the test plate (2).

7. The device for testing the fluidity of sealant according to claim 1, characterized in that: The linear drive mechanism (4) is a linear motor.

8. The device for testing the fluidity of sealant according to claim 1, characterized in that: The linear drive mechanism (4) is a hydraulic pusher.

9. The device for testing the fluidity of sealant according to claim 1, 7 or 8, characterized in that: A second button group (6) is mounted on the base (1), the second button group (6) being used to control the linear drive mechanism (4), the second button group (6) comprising an extension button and a retraction button.

10. The device for testing the fluidity of sealant according to claim 1, characterized in that: The test plate (2) is provided with scale lines (23), and the first line of the scale lines (23) is tangent to the lowest point of the circumference of the countersunk hole (21).

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