Shore durometer

Abstract

The utility model relates to the technical field of detection equipment, and discloses a shore durometer which comprises an indicating device, a pressing block, a pressing foot, a pressing needle assembly and a gradienter. The pressing block is arranged at the top of the indicating device; the pressing foot is connected to the bottom of the indicating device, the pressing foot is provided with an outer cylinder body, and a window is formed in the side wall of the outer cylinder body; the gradienter is opposite to the window and is arranged in the outer cylinder or on the side wall of the outer cylinder; the pressing needle assembly is installed in the pressing foot and connected with the indicating device. According to the shore durometer, the gradienter is additionally arranged on the outer cylinder body of the pressing foot, so that the inclination of the durometer body and the pressing needle can be observed at any time, the pressing needle is kept in a vertical or horizontal state, the applied force is correct, and the detection accuracy is improved; meanwhile, the gradienter is designed in the pressure foot, so that the internal space of the shore durometer can be efficiently utilized, and the advantage of small size of the shore durometer is guaranteed while the measurement performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a Shore hardness tester. Background Art

[0002] The Shaw durometer, commonly known as the rubber durometer, is an instrument for measuring the hardness of vulcanized rubber and plastic products. It is widely used in the measurement and testing of machinery manufacturing, metallurgy, chemical industry, building materials and other industries, scientific research and production, the determination of the hardness properties of finished and semi-finished products, and the quality control of rubber products. It has the characteristics of simple structure, easy use, small size and light weight, and intuitive readings. It can be carried with you for handheld measurement, or installed on a fixed load rack of the same model produced in conjunction with it for fixed load measurement. At present, the more commonly used Shaw durometers in China are Type A and Type D, which are suitable for testing the hardness of low-medium hardness and high-hardness rubber and plastic materials respectively. The pressure test force of the Shaw durometer is its important indicator.

[0003] When the hardness tester is testing, its overall verticality and parallelism to the ground are crucial to the measurement results. Currently, most of the devices on the market ensure that the hardness tester remains vertical by fixing it on a bracket or installing a pressure foot on the hardness tester. While ensuring the measurement accuracy, it destroys the small and convenient characteristics of the hardness tester, narrows the scope of application of the device, and is not suitable for measuring the hardness of the surface material of the equipment in actual production. Utility Model Content

[0004] Based on the technical problem in the prior art that the Shore hardness tester cannot maintain vertical measurement without a bracket, the utility model provides a Shore hardness tester, which is easy to operate, small in size, can ensure that the pressure needle remains in a vertical or horizontal state, and has high measurement accuracy.

[0005] The utility model provides a Shore hardness tester, comprising:

[0006] Indicating device;

[0007] A pressing block, arranged on the top of the indicating device;

[0008] A pressure foot connected to the bottom of the display device, the pressure foot having an outer cylinder, and a side wall of the outer cylinder having a viewing window;

[0009] A level, opposite to the viewing window, disposed inside the outer cylinder or on a side wall of the outer cylinder;

[0010] The pressure needle assembly is installed in the pressure foot and connected to the indicating device.

[0011] In some embodiments, an inner cylinder is further disposed in the pressure foot, and the pressure needle assembly is disposed in the inner cylinder.

[0012] In some embodiments, the pressing needle assembly includes a pressing needle and a spring sleeved on the pressing needle, the spring is arranged in the pressing foot, and the bottom end of the pressing needle extends out of the pressing foot.

[0013] In some embodiments, the level is a straight-bar bubble level.

[0014] In some embodiments, the outer cylinder includes a cylinder portion and end cover portions connected to both ends of the cylinder portion, and the end cover portions are provided with mounting grooves for mounting the level.

[0015] In some embodiments, the level is a universal bubble level.

[0016] In some embodiments, the indicator device includes a pointer scale dial.

[0017] In some embodiments, a locking bolt is provided on the indicating device.

[0018] In some embodiments, the indicating device includes a digital display disk, the top end of the pressure needle assembly is connected to a displacement sensor, and the displacement sensor is electrically connected to the digital display disk.

[0019] In some embodiments, the level is disposed in the outer cylinder, and a transparent cover is provided on the viewing window.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] The above-mentioned Shore hardness tester, by adding a spirit level on the outer cylinder of the pressure foot, can always observe the inclination of the hardness tester body and the pressure needle, ensure that the pressure needle remains in a vertical or horizontal state, and the applied force is correct, thereby improving the detection accuracy; at the same time, designing a spirit level inside the pressure foot can make efficient use of the internal space of the Shore hardness tester, improve the measurement performance while ensuring its advantage of small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the internal structure of the Shore hardness tester of the utility model;

[0024] Figure 2 It is a schematic structural diagram of the vertical state of the pressure foot in the Shore hardness tester of the utility model;

[0025] Figure 3It is a structural schematic diagram of the horizontal state of the pressure foot in the Shore hardness tester of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the end cover of the Shore hardness tester of the utility model;

[0027] Description of reference numerals:

[0028] Indicator device 1;

[0029] Briquetting 2;

[0030] Press foot 3; outer cylinder 31; window 311; end cover 312; mounting groove 313; inner cylinder 32;

[0031] Pressing needle assembly 4; pressing needle 41; spring 42;

[0032] Level 5; Bubble 51; Scale line 52;

[0033] Tighten the bolt 6. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0038] Reference Figure 1-Figure 4 , which is an embodiment of the Shore hardness tester of the utility model.

[0039] The Shore hardness tester comprises an indicating device 1 , a pressing block 2 , a pressing foot 3 , a pressing needle assembly 4 and a level 5 .

[0040] The pressing block 2 is arranged on the top of the indicating device 1 and is used for pressing during hand-held operation.

[0041] The press foot 3 is connected to the bottom of the display device and has an outer cylinder 31 , and a window 311 is formed on the side wall of the outer cylinder 31 .

[0042] The level 5 is opposite to the window 311 and is disposed inside the outer cylinder 31 or fixed on the side wall of the outer cylinder 31. The level 5 is a bubble 51 level 5. During the measurement process, the bubble 51 in the level 5 can be observed to determine whether the Shore hardness tester is horizontal or vertical.

[0043] The pressing needle assembly 4 is installed in the pressing foot 3 and connected to the indicating device 1. The indicating device 1 is used to indicate or display the hardness value.

[0044] Among them, the pressure needle assembly 4 includes a pressure needle 41 and a spring 42 sleeved on the pressure needle 41. The spring 42 is arranged in the pressure foot 3, and a through hole is provided at the bottom of the outer cylinder of the pressure foot 3, and the bottom end of the pressure needle 41 extends out of the through hole. When the pressure needle 41 is pressed into the sample, the spring 42 is compressed to generate the spring 42 force, which is balanced with the force of the sample surface acting on the pressure needle 41. In this way, the higher the hardness of the sample, the greater the force acting on the pressure needle 41, and the shallower the depth of the pressure needle 41 pressing into the sample surface; on the contrary, the lower the hardness of the sample, the smaller the force acting on the pressure needle 41, and the deeper the pressure needle 41 pressing into the sample surface.

[0045] During measurement, by observing the spirit level 5 on the pressing foot 3, it can be ensured that the pressing needle 41 is vertically pressed into the surface of the sample. When the surface of the pressing foot 3 fits the surface of the sample, the surface of the pressing needle 41 has a protruding length L relative to the bottom plane of the pressing foot 3. The size of the Shore hardness is represented by the size of the L value. The larger the L value, the lower the Shore hardness, and vice versa.

[0046] The above-mentioned Shore hardness tester, by adding a spirit level 5 on the outer cylinder 31 of the pressure foot 3, can always observe the inclination of the hardness tester body and the pressure needle 41, ensure that the pressure needle 41 remains in a vertical or horizontal state, and the applied force is correct, thereby improving the detection accuracy; at the same time, the spirit level 5 is designed inside the pressure foot 3, which can make efficient use of the internal space of the Shore hardness tester, improve the measurement performance while ensuring its advantage of small size.

[0047] In this embodiment, an inner cylinder 32 is further provided in the press foot 3, and the press needle assembly 4 is provided in the inner cylinder 32. The inner cylinder 32 is coaxially provided with the outer cylinder 31. The inner cylinder 32 can protect the press needle assembly 4. The level 5 is provided between the inner cylinder 32 and the outer cylinder 31.

[0048] In this embodiment, the level 5 is a straight bubble 51 level 5. The outer cylinder 31 includes a cylinder and end caps 312 connected to both ends of the cylinder. Figure 4 As shown, a mounting groove 313 is provided on the end cover portion 312 , and two ends of the level 5 are respectively mounted in the mounting grooves 313 at the two ends.

[0049] The tube of the straight bubble 51 level 5 is filled with alcohol and a small bubble 51 is left. The principle of the bubble 51 level 5 is to use the characteristic that the bubble 51 is always at the highest point in the glass tube. Figure 2 As shown, when the Shore hardness tester is in a vertical state, the bubble 51 is located at the highest point in the tube (the edges on both sides of the bubble 51 are located at the highest point); Figure 3 As shown, when the Shore hardness tester is in a horizontal state, the bubble 51 is located within the two scale lines 52 in the middle of the tube.

[0050] In another embodiment, the level 5 can be fixed to the inner side of the window 311 by adhesive or hot-melt welding. The width of the window 311 is slightly smaller than the width of the level 5 to prevent the level 5 from slipping out of the outer cylinder 31 during adhesive fixation.

[0051] See also Figure 1 The indicating device 1 comprises a pointer scale dial. A locking bolt 6 is arranged on the pointer scale dial for adjusting the pointer to zero.

[0052] In another embodiment, the indicating device 1 includes a digital display disk, and the top end of the pressure needle assembly 4 is connected to a displacement sensor, and the displacement sensor is electrically connected to the digital display disk.

[0053] In order to protect the level 5 , a transparent cover is provided on the window 311 outside the level 5 .

[0054] In another embodiment, the level 5 is a universal bubble 51 type level 5. The universal bubble 51 type level 5 has a circular shell, and a corresponding circular installation groove can be opened on the outer wall of the pressure foot 3 for installation.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A Shore hardness tester, characterized in that: include: Indicating device; A pressing block, arranged on the top of the indicating device; A pressure foot connected to the bottom of the indicating device, the pressure foot having an outer cylinder, and a side wall of the outer cylinder having a viewing window; A level, opposite to the viewing window, disposed inside the outer cylinder or on a side wall of the outer cylinder; The pressure needle assembly is installed in the pressure foot and connected to the indicating device.

2. The Shore hardness tester according to claim 1, characterized in that: An inner cylinder is also arranged in the pressure foot, and the pressure needle assembly is arranged in the inner cylinder.

3. The Shore hardness tester according to claim 2, characterized in that: The pressing needle assembly comprises a pressing needle and a spring sleeved on the pressing needle, the spring is arranged in the pressing foot, and the bottom end of the pressing needle extends out of the pressing foot.

4. The Shore hardness tester according to claim 1, characterized in that: The level is a straight-bar type bubble level.

5. The Shore hardness tester according to claim 4, characterized in that: The outer cylinder comprises a cylinder portion and end cover portions connected to both ends of the cylinder portion, and the end cover portions are provided with mounting grooves for mounting the level.

6. The Shore hardness tester according to claim 1, characterized in that: The level is a universal bubble level.

7. The Shore hardness tester according to claim 1, characterized in that: The indicating device comprises a pointer scale dial.

8. The Shore hardness tester according to claim 7, characterized in that: The indicating device is provided with a locking bolt.

9. The Shore hardness tester according to claim 1, characterized in that: The indicating device comprises a digital display disk, the top end of the pressure needle assembly is connected with a displacement sensor, and the displacement sensor is electrically connected to the digital display disk.

10. The Shore hardness tester according to claim 1, characterized in that: The level is arranged in the outer cylinder, and a transparent cover is provided on the viewing window.

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