Digital pendulum bob tearing tester

Abstract

The utility model discloses a digital pendulum bob tearing tester, which comprises a base, a support plate is fixedly connected to the top of the base close to the rear side, a first bearing is fixedly inserted on the support plate, a rotating rod is fixedly arranged in an inner cavity of the first bearing in a penetrating manner, a fan-shaped plate is arranged on the front side of the support plate, and the fan-shaped plate is arranged on the rear side of the support plate. According to the digital pendulum bob tearing tester disclosed by the utility model, the counterweight is sleeved on the outer side of the counterweight mounting shaft, then the elastic limiting piece is moved to be inserted into the inner cavity of the through hole, the elastic limiting piece is opened under the action of the bevel edge, and the elastic limiting piece is inserted into the inner cavity of the through hole; and then the elastic limiting piece moves downwards until the elastic limiting piece drives the arc-shaped groove to move downwards to be attached to the outer side of the weight fixing shaft, so that the weight is fixed, the situation that the weight falls off in the subsequent testing process is avoided, and normal proceeding of testing work is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric testing, in particular to a digital pendulum tearing tester. Background Art

[0002] The Drop Weight Tear Tester is primarily used to determine the tear properties of various woven fabrics and nonwovens with a regular tear direction. It is also suitable for measuring the tear properties of paper, plastics, and some packaging materials. The test principle is to indirectly determine the average tear strength of a sample by measuring the potential energy consumed by a fan-shaped pendulum when tearing the sample.

[0003] Currently, most manufacturers use mechanical drop-weight tearing instruments. These instruments primarily consist of a base, a fan-shaped pendulum, a support base, a bearing swivel mechanism, a pointer, a graduated dial, a dynamic clamp, a static clamp, and a blocking plate. The support base, bearing swivel mechanism, static clamp, and blocking shaft are all mounted on the base. The center of the fan-shaped pendulum is attached to the bearing swivel mechanism via a rotating shaft. A pointer is also located at the center of the fan-shaped pendulum, and a graduated dial corresponds to the pointer. During operation, the specimen is clamped between the dynamic and static clamps. After the specimen is incised, the blocking plate is released, and the dynamic clamp, in conjunction with the fan-shaped pendulum, tears the specimen. The energy consumed in tearing the specimen is determined by measuring the potential energy decay of the pendulum. This is achieved by measuring the height difference of the fan-shaped pendulum at a certain point. The fan-shaped pendulum performs work when tearing the specimen. The tearing work is calculated by measuring the potential energy consumed by the fan-shaped pendulum in its initial state. The average tearing force of the specimen is then calculated based on the tear length. Existing mechanical drop-weight tear testers have the following drawbacks: The tearing force F is essentially expressed as an angle, with the converted force value printed on a dial fixed to the edge of the fan-shaped pendulum. Force is indicated by a pointer, but this pointer-based force dial exhibits significant errors in actual production. Within the force range of 0-16N, the angle increases with increasing force, a linear function. However, in actual signage production, each unit force value is measured based on the designed angle, with intermediate values ​​determined by equal division. While the force scale in the 0-16N range is relatively high, the accuracy error increases significantly with each scale value in the 0-32N and 0-64N ranges, as more force values ​​are included in each scale value. Furthermore, visually observing the readings also results in significant errors. Consequently, the accuracy of the measured tearing force is low.

[0004] The existing Chinese patent CN201732036U digital drop weight tearing tester solves the above problem by simply placing the weight on the outside of the weight shaft without any additional fixing measures. The stability is extremely poor, and the weight is easy to fall during the drop weight test, thereby affecting the normal progress of the test. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a digital pendulum tear tester.

[0006] One of the purposes of this utility model is achieved by the following technical solution:

[0007] A digital pendulum tear tester comprises a base, wherein the top of the base is fixedly connected to a support plate near the rear side, a first bearing is fixedly inserted on the support plate, a rotating rod is fixedly passed through the inner cavity of the first bearing, a fan-shaped plate is provided on the front side of the support plate, the front end of the rotating rod is fixedly passed through the fan-shaped plate, a fixed block is fixedly connected to the right side of the support plate, a movable block is fixedly connected to the top of the fan-shaped plate near the rear side, a clamping plate is provided on the right side of the top of the fixed block and the movable block, a limiting frame is provided on the right side of the clamping plate, and the two limiting frames are fixedly connected to the fixed block and the movable block respectively. The rear side of the fixed block and the front side of the movable block are fixedly connected to a mounting plate, the right side of the mounting plate is fixedly connected to a second bearing, the right side of the second bearing is fixedly inserted with a threaded rod, a screw hole is provided on the splint, the right end of the threaded rod passes through the screw hole, the front side of the fan-shaped plate near the left side is fixedly connected to a weight mounting shaft, the outer edge of the weight mounting shaft is movably sleeved with two weights, a through hole is provided on the weight mounting shaft near the front end, an elastic limiting piece is inserted into the inner cavity of the through hole, an arc groove is provided on the right side of the inner cavity of the elastic limiting piece, and a bevel is provided on the bottom of the elastic limiting piece near the right side.

[0008] Preferably, the bottom of the base is fixedly connected with feet near the four corners, and the front side of the base is provided with a display screen and several buttons.

[0009] Preferably, the cross section of the limiting frame is U-shaped, and the top and bottom of the clamping plate are both in contact with the inner side of the limiting frame.

[0010] Preferably, the screw hole and the threaded rod are threadedly connected, and the right end of the threaded rod is fixedly connected to an operating rod.

[0011] Preferably, the arc-shaped groove and the weight installation shaft match each other, and the weight installation shaft and the inner wall of the arc-shaped groove fit each other.

[0012] Preferably, the rear side of the base is fixedly connected to a mounting bracket, the front side of the mounting bracket is fixedly connected to an electric telescopic rod, the front side of the electric telescopic rod is fixedly connected to a baffle, and the baffle is in contact with the side wall of the fan-shaped plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is a digital pendulum tear tester. The weight is placed on the outside of the weight installation shaft, and then the elastic limiting piece is moved to be inserted into the inner cavity of the perforation. The elastic limiting piece is stretched open by the action of the bevel, and then the elastic limiting piece moves downward until the elastic limiting piece drives the arc groove to move downward to fit the outside of the weight fixing shaft. In this way, the weight is fixed and the weight is prevented from falling off during the subsequent test process, thereby ensuring the normal progress of the test work.

[0015] 2. The utility model is a digital pendulum tear tester. During use, the textile to be tested is placed on the left side of the splint, and the threaded rod is driven to rotate by rotating the operating lever. The threaded rod rotates in the inner cavity of the second bearing and the screw hole. The splint moves relative to the threaded rod under the action of the screw hole. The limit frame can limit the movement trajectory of the splint. The splint moves to the left to clamp and fix the textile. The operation is simple and convenient.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front perspective view of the utility model;

[0018] Figure 2 This is a rear perspective view of the present invention;

[0019] Figure 3 It is a front perspective view of the baffle component of the utility model;

[0020] Figure 4 This is a front perspective view of the support plate of the component of the utility model;

[0021] Figure 5 It is a rear perspective view of the support plate of the component of the utility model;

[0022] Figure 6 It is a rear perspective view of the fixing block of the utility model component;

[0023] Figure 7 It is a rear perspective view of the splint of the utility model component;

[0024] Figure 8 It is a front perspective view of the sector plate component of the utility model;

[0025] Figure 9 A front perspective view of a weight component of the present invention;

[0026] Figure 10This is a front perspective view of the weight mounting shaft of the utility model component;

[0027] Figure 11 This is a front perspective view of the elastic limiting piece of the utility model.

[0028] Numbers in the figure: 1. Base; 2. Foot pad; 3. Display screen; 4. Button; 5. Support plate; 6. First bearing; 7. Turntable; 8. Fan-shaped plate; 9. Fixed block; 10. Movable block; 11. Clamp; 12. Limit frame; 13. Screw hole; 14. Threaded rod; 15. Second bearing; 16. Mounting plate; 17. Operating lever; 18. Weight mounting shaft; 19. Weight; 20. Perforation; 21. Elastic limit plate; 22. Arc groove; 23. Bevel; 24. Baffle; 25. Electric telescopic rod; 26. Mounting frame. DETAILED DESCRIPTION

[0029] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] See also Figure 1-11 The utility model provides a technical solution: a digital pendulum tear tester, comprising a base 1, wherein the bottom of the base 1 is fixedly connected to pads 2 near the four corners, a display screen 3 and a plurality of buttons 4 are provided on the front side of the base 1, a support plate 5 is fixedly connected to the top of the base 1 near the rear side, a first bearing 6 is fixedly inserted on the support plate 5, a rotating rod 7 is fixedly provided through the inner cavity of the first bearing 6, a fan-shaped plate 8 is provided on the front side of the support plate 5, and the front end of the rotating rod 7 is fixedly passed through the fan-shaped plate 8;

[0033] The right side of the support plate 5 is fixedly connected to a fixed block 9, and the top of the fan-shaped plate 8 is fixedly connected to a movable block 10 near the rear side. A splint 11 is provided on the right side of the top of the fixed block 9 and the movable block 10, and a limit frame 12 is provided on the right side of the splint 11. The cross-section of the limit frame 12 is U-shaped, and the top and bottom of the splint 11 are in contact with the inner side of the limit frame 12. The two limit frames 12 are fixedly connected to the fixed block 9 and the movable block 10 respectively. The rear side of the fixed block 9 and the front side of the movable block 10 are fixedly connected to a mounting plate 16. The right side of the mounting plate 16 is fixedly connected to a second bearing 15, and a threaded rod 14 is fixedly inserted on the right side of the second bearing 15. A screw hole 13 is provided on the splint 11, and the right end of the threaded rod 14 passes through the screw hole 13. The screw hole 13 and the threaded rod 14 are threadedly connected, and the right end of the threaded rod 14 is fixedly connected to an operating rod 17;

[0034] The front side of the sector plate 8 is fixedly connected to a weight mounting shaft 18 near the left side, and two weights 19 are movably sleeved on the outer edge of the weight mounting shaft 18. A through hole 20 is provided on the weight mounting shaft 18 near the front end, and an elastic limiting piece 21 is inserted into the inner cavity of the through hole 20. An arc-shaped groove 22 is provided on the right side of the inner cavity of the elastic limiting piece 21, and the arc-shaped groove 22 matches the weight mounting shaft 18. The weight mounting shaft 18 and the inner wall of the arc-shaped groove 22 fit together. A bevel 23 is provided near the right side of the bottom of the elastic limiting piece 21. The rear side of the base 1 is fixedly connected to a mounting bracket 26, and the front side of the mounting bracket 26 is fixedly connected to an electric telescopic rod 25. The front side of the electric telescopic rod 25 is fixedly connected to a baffle 24, and the baffle 24 fits together with the side wall of the sector plate 8.

[0035] Working principle: The utility model is a digital pendulum tear tester. During use, the textile to be tested is placed on the left side of the splint 11, and the threaded rod 14 is driven to rotate by rotating the operating rod 17. The threaded rod 14 rotates in the inner cavity of the second bearing 15 and the screw hole 13, and the splint 11 moves relative to the threaded rod 14 under the action of the screw hole 13. The limit frame 12 can limit the movement trajectory of the splint 11, and the splint 11 moves to the left to clamp the textile. Then, according to the test requirements, the weight 19 is added and the weight 19 is placed on the outside of the weight installation shaft 18. Then, the elastic limiting piece 21 is moved and inserted into the inner cavity of the through-hole 20. The elastic limiting piece 21 is stretched open by the action of the oblique edge 23, and then the elastic limiting piece 21 moves downward until the elastic limiting piece 21 drives the arc groove 22 to move downward to fit the outer side of the weight fixing shaft 18. In this way, the weight 19 is fixed, and it is prevented from falling off during the subsequent test, thereby ensuring the normal progress of the test work.

[0036] During the test, the electric telescopic rod 25 is shortened by controlling the external power supply, and the electric telescopic rod 25 drives the baffle 24 to move away from the fan-shaped plate 8. The fan-shaped plate 8 rotates counterclockwise under the gravity of the weight 19, and the fan-shaped plate 8 drives the rotating rod 7 to rotate in the inner cavity of the first bearing 6. The fan-shaped plate 8 drives the movable block 10 and the adjacent splint 11 to flip together, thereby performing a tearing test on the textile.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A digital pendulum tear tester, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support plate (5) near the rear side, and a first bearing (6) is fixedly plugged into the support plate (5). A rotating rod (7) is fixedly provided through the inner cavity of the first bearing (6). A fan-shaped plate (8) is provided on the front side of the support plate (5). The front end of the rotating rod (7) is fixedly provided through the fan-shaped plate (8). The right side of the support plate (5) is fixedly connected to a fixed block (9). The top of the fan-shaped plate (8) is fixedly connected to a movable block (10) near the rear side. A clamping plate (11) is provided on the right side of the top of each of the fixed block (9) and the movable block (10). A limiting frame (12) is provided on the right side of the clamping plate (11). The two limiting frames (12) are fixedly connected to the fixed block (9) and the movable block (10) respectively. The rear side of the fixed block (9) and the front side of the movable block (10) are fixedly connected to the fixed block (9). The mounting plate (16) is fixedly connected to the right side of the mounting plate (16), the second bearing (15) is fixedly connected to the right side of the second bearing (15), the threaded rod (14) is fixedly inserted into the right side of the second bearing (15), the clamping plate (11) is provided with a screw hole (13), the right end of the threaded rod (14) passes through the screw hole (13), the front side of the fan-shaped plate (8) is fixedly connected to a weight mounting shaft (18) near the left side, the outer edge of the weight mounting shaft (18) is movably sleeved with two weights (19), the weight mounting shaft (18) is provided with a through hole (20) near the front end, the inner cavity of the through hole (20) is inserted with an elastic limiting piece (21), the inner cavity of the elastic limiting piece (21) is provided with an arc groove (22) on the right side, and the bottom of the elastic limiting piece (21) is provided with a bevel (23) near the right side.

2. A digital pendulum tear tester according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected to pads (2) near the four corners, and the front side of the base (1) is provided with a display screen (3) and a plurality of buttons (4).

3. The digital pendulum tear tester according to claim 1, characterized in that: The cross section of the limiting frame (12) is U-shaped, and the top and bottom of the clamping plate (11) are both fitted with the inner side of the limiting frame (12).

4. The digital pendulum tear tester according to claim 1, characterized in that: The screw hole (13) and the threaded rod (14) are threadedly connected, and the right end of the threaded rod (14) is fixedly connected to an operating rod (17).

5. The digital pendulum tear tester according to claim 1, characterized in that: The arc-shaped groove (22) and the weight installation shaft (18) match each other, and the weight installation shaft (18) and the inner wall of the arc-shaped groove (22) fit each other.

6. The digital pendulum tear tester according to claim 1, characterized in that: The rear side of the base (1) is fixedly connected to a mounting frame (26), the front side of the mounting frame (26) is fixedly connected to an electric telescopic rod (25), the front side of the electric telescopic rod (25) is fixedly connected to a baffle (24), and the baffle (24) and the side wall of the fan-shaped plate (8) are in contact with each other.

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