Marking device for ultra-thin cold-rolled steel strip tensile sample

Abstract

The utility model discloses a point marking device for an ultra-thin cold-rolled steel strip tensile sample. The point marking device comprises a base, a movable support is arranged on the base, a cushion block is arranged at the upper end of the movable support, a cushion plate is arranged on the cushion block, the tensile sample is arranged on the cushion plate, and a mounting plate is arranged above the base. A mounting plate is arranged on the base, a point marking ejector pin is arranged in the mounting plate, a driving shaft is arranged on one side of the point marking ejector pin, the point marking ejector pin is located above the tensile sample, the top end and the bottom end of the point marking ejector pin extend out of the mounting plate, and the point marking device for the ultrathin cold-rolled steel strip tensile sample is convenient to use, high in precision and reliable in point marking effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of test devices, and in particular relates to a marking device for tensile test specimens of ultra-thin cold-rolled steel strips. Background Art

[0002] Elongation after fracture is an important indicator of the tensile properties of materials, which can characterize the plastic deformation ability of materials. Elongation after fracture is equal to the ratio of the residual elongation of the tensile specimen after fracture to the original gauge length. Therefore, the original gauge length needs to be marked on the specimen before the tensile specimen test, and the elongation of the original gauge length is measured after the broken specimen is spliced, so as to calculate the elongation after fracture of the material.

[0003] At present, the marking methods for the original gauge length of tensile specimens include semi-automatic marking machine marking, laser marking machine marking, manual marking marking, etc. However, for ultra-thin specimens (especially those with a thickness of ≤0.3mm), when semi-automatic marking machines and laser marking machines are used for normal marking, ultra-thin tensile specimens are prone to stress concentration at the marking points first and break at the marking points. If the marking depth is reduced, it is easy to cause the marking points to be lost after the test. Manual marking usually uses a marker pen and a ruler for marking. This method has poor marking accuracy and is very inefficient.

[0004] The utility model patent with announcement number CN201569599U was published on September 1, 2010. The device is named as the original gauge marking device for metal mechanical properties specimens. The device is composed of two threaded rods with cones and a metal plate. The two threaded rods are installed on the metal plate according to the required original gauge length with nuts. The metal plate is processed with a row of through holes or strip grooves for installing threaded rods and adjusting the gauge length. The device is not suitable for marking ultra-thin steel strips, and the marking effect is poor. Utility Model Content

[0005] The utility model aims to provide a marking device for ultra-thin cold-rolled steel strip tensile test specimens which is convenient to use, high in precision and reliable in marking effect in view of the deficiencies in the prior art.

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

[0007] The marking device for the tensile specimen of the ultra-thin cold-rolled steel strip comprises a base, a movable support is arranged on the base, a cushion block is arranged on the upper end of the movable support, a pad is arranged on the cushion block, the tensile specimen is arranged on the pad, and a mounting plate is arranged above the base; a marking ejector pin is arranged in the mounting plate, a driving shaft is arranged on one side of the marking ejector pin, the marking ejector pin is located above the tensile specimen, and the top and bottom ends of the marking ejector pin both extend out of the mounting plate.

[0008] The punctuation pins are arranged at equal intervals, and carbon paper is provided on the tensile specimen.

[0009] The punctuation thimble is a hollow structure, a marking object is arranged inside the punctuation thimble, and a marking part is arranged at the bottom end of the punctuation thimble.

[0010] A spring is sleeved on the punctuation ejector pin, and limiting holes are arranged at equal intervals on the mounting plate. The middle of the punctuation ejector pin is located in the limiting hole, and a first protrusion and a second protrusion are respectively arranged on both sides of the punctuation ejector pin, and the first protrusion extends out from the limiting hole.

[0011] The driving shaft is provided with a driving blade which is in a spiral structure. One end of the driving shaft is fixedly connected with a handle.

[0012] The movable supports are arranged in pairs, and both ends of the movable supports are provided with card slots, and the card slots are matched with the two sides of the base. The movable supports are provided with slide slots, and the bottom of the cushion block is matched with the slide slots.

[0013] The two ends of the bottom of the mounting plate are connected to the base with rotating shafts.

[0014] A steel wire is wound between the end of the pad and the base, and the steel wire presses the pad and the base.

[0015] The technical effect of the utility model is as follows: the marking device for ultra-thin cold-rolled steel strip tensile specimens of the utility model has the advantages of high marking accuracy and reliable marking effect, and can produce clear and visible marks without causing damage or fracture to the specimen. It can be applied to the marking of ultra-thin steel strips without affecting the tensile test of the specimen, and the test data is more accurate; it has a wide range of applications, and can be applied to the marking of cold-rolled steel strip tensile specimens of different specifications; the device can be driven manually for use, and the marking efficiency is high and the use cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is a structural schematic diagram of a marking device for a tensile test specimen of an ultra-thin cold-rolled steel strip according to the utility model;

[0018] Figure 2 It is a structural schematic diagram of the punctuation ejector of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a base and a movable support of the utility model.

[0020] The markings in the figure are: 1. Base; 2. Movable support; 3. Cushion block; 4. Cushion plate; 5. Mounting plate; 6. Punctuation ejector pin; 7. Marking part; 8. Driving shaft; 9. Driving blade; 10. Carbon paper; 11. Spring; 12. Limiting hole; 13. First protrusion; 14. Second protrusion; 15. Steel wire; 16. Handle; 17. Slot; 18. Slide groove; 19. Rotating shaft. DETAILED DESCRIPTION

[0021] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0022] like Figures 1 to 3 As shown, the marking device for the tensile specimen of the ultra-thin cold-rolled steel strip comprises a base 1, a movable support 2 is provided on the base 1, a cushion block 3 is provided on the upper end of the movable support 2, a pad 4 is provided on the cushion block 3, the tensile specimen is arranged on the pad 4, and a mounting plate 5 is provided above the base 1; a marking pin 6 is provided in the mounting plate 5, a driving shaft 8 is provided on one side of the marking pin 6, the marking pin 6 is located above the tensile specimen, and the top and bottom ends of the marking pin 6 both extend out from the mounting plate 5.

[0023] The marking device solves the problem that ultra-thin tensile specimens are difficult to mark, and can realize the marking of tensile specimens with a thickness of ≤0.3mm, replacing the manual marking process with poor accuracy and cumbersome procedures. The marking has high stability, avoiding the influence of the existing marking mechanism on the accuracy of the ultra-thin cold-rolled steel strip tensile test results, and ensuring the marking accuracy of the specimens and the accuracy of the test data.

[0024] like Figure 1 As shown, the punctuation pins 6 are arranged at equal intervals, and a carbon paper 10 is provided on the tensile specimen. The carbon paper 10 has multiple layers, and after the pins of the dotting machine are pressed on the carbon paper 10, clearly visible punctuation marks can be left. The multiple layers of carbon paper 10 also provide a certain buffering effect for the tensile specimen punctuation process, and can disperse the impact on the specimen, thereby providing a certain protection for the ultra-thin tensile specimen.

[0025] like Figure 2As shown, the punctuation ejector pin 6 is a hollow structure, a marker is arranged inside the punctuation ejector pin 6, and a marking portion 7 is arranged at the bottom end of the punctuation ejector pin 6. The punctuation ejector pin 6 is hollow in design, and the top end of the punctuation ejector pin 6 extends from the mounting plate 5 and can be used to fill the marker. The punctuation ejector pin 6 is filled with ink or other markers. The marking portion 7 is embedded at the bottom end of the punctuation ejector pin 6 and is a spherical structure. When the marking portion 7 falls on the carbon paper 10 or the surface of the sample, the marker leaves a mark on the surface of the sample through the marking portion 7 to increase the obviousness of the mark; the operator can also directly press the punctuation ejector pin 6 on the surface of the tensile sample to simplify the operation process while ensuring the obviousness of the mark.

[0026] like Figure 2 As shown, a spring 11 is sleeved on the punctuation ejector 6, and a limiting hole 12 is provided at equal intervals on the mounting plate 5. The middle of the punctuation ejector 6 is located in the limiting hole 12. A first protrusion 13 and a second protrusion 14 are provided on both sides of the punctuation ejector 6, respectively. The first protrusion 13 extends from the limiting hole 12. The length of the limiting hole 12 is the vertical movable height of the first protrusion 13. The limiting hole 12 is used to limit the lifting height of the punctuation ejector 6. After the punctuation ejector 6 is lifted, the spring 11 is compressed to reset the punctuation ejector 6 to drop, thereby realizing the dotting function. Among them, the limiting hole 12 is a waist-shaped hole, which can reduce the wear caused by the frequent movement of the first protrusion 13.

[0027] like Figure 1 As shown, the driving shaft 8 is provided with a driving blade 9, which is in a spiral structure, and a handle 16 is fixedly connected to one end of the driving shaft 8. When working, the driving blade 9 presses against the second boss to lift the punctuation ejector 6. When the punctuation ejector 6 rises to the maximum height, the driving blade 9 separates from the second boss, and then the punctuation ejector 6 falls to complete the dotting process; the driving blade 9 is designed as a spiral structure, and the driving shaft 8 rotates to drive the punctuation ejector 6 to lift up in turn, thereby forming a dotting effect in turn, reducing stress concentration, reducing the impact force on the tensile specimen per unit time, effectively preventing the risk of the tensile specimen breaking at the punctuation point and the phenomenon of the tensile specimen being dislocated due to impact, improving stability, thereby ensuring the accuracy of the test data, and reducing the force required to turn the handle 16, making it convenient for the staff to use.

[0028] like Figure 3 As shown, the movable support 2 is arranged in pairs, and the two ends of the movable support 2 are provided with a slot 17, the slot 17 cooperates with the two sides of the base 1, and the movable support 2 is provided with a slide groove 18, and the bottom of the cushion block 3 cooperates with the slide groove 18. The movable support 2 realizes movement along the base 1 through the slot 17, and the cross section of the cushion block 3 is a T-shaped structure. The cushion block 3 can be adjusted in position on the slide groove 18 to provide effective support for the pad 4, thereby adapting to the dotting of tensile specimens of different lengths.

[0029] like Figure 1As shown, the two ends of the bottom of the mounting plate 5 are connected to the base 1 with a rotating shaft 19. The bottom of the mounting plate 5 is connected to the two ends of the base 1 through the rotating shaft 19 to realize the overall rotation of the mounting plate 5. Only the mounting plate 5 needs to be rotated to replace other tensile specimens.

[0030] like Figure 1 As shown, a steel wire 15 is wound between the end of the pad 4 and the base 1, and the steel wire 15 presses the pad 4 and the base 1. The steel wire 15 is used to further fix the pad 4, improve the stability of the pad 4 after impact when the device is working, and thus ensure the accuracy of the test data.

[0031] The use process of the device is as follows: place the processed ultra-thin tensile specimen under the dotting machine, place 2 to 3 sheets of carbon paper 10 on the surface of the specimen, and also fill the punctuation pin 6 with markers. Manually turn the handle 16 to drive the drive shaft 8 to rotate, drive the blades 9 to lift the punctuation pin 6 in turn, and the punctuation pin 6 falls in turn to realize the dotting process. The punctuation pin 6 can be pressed on the carbon paper 10 to deepen the mark, and a row of clear punctuation marks can be seen on the surface of the specimen.

[0032] The marking device for the tensile specimen of an ultra-thin cold-rolled steel strip has the advantages of high marking accuracy and reliable marking effect, and can produce clear and visible marks without causing damage or fracture to the specimen. It can be used for marking ultra-thin steel strips without affecting the tensile test of the specimen, and the test data is more accurate. It has a wide range of applications and can be used for marking tensile specimens of cold-rolled steel strips of different specifications. The device can be driven manually for use, and has high marking efficiency and low use cost.

[0033] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A marking device for ultra-thin cold-rolled steel strip tensile specimens, characterized in that: The invention comprises a base (1), wherein a movable support (2) is provided on the base (1), a cushion block (3) is provided on the upper end of the movable support (2), a pad (4) is provided on the pad block (3), the tensile test specimen is arranged on the pad (4), and a mounting plate (5) is provided above the base (1); a punctuation pin (6) is provided inside the mounting plate (5), a driving shaft (8) is provided on one side of the punctuation pin (6), the punctuation pin (6) is located above the tensile test specimen, and the top and bottom ends of the punctuation pin (6) both extend out from the mounting plate (5).

2. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 1, characterized in that: The punctuation pins (6) are arranged at equal intervals, and a carbon paper (10) is provided on the tensile specimen.

3. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 1 or 2, characterized in that: The punctuation thimble (6) is a hollow structure, a marking object is arranged inside the punctuation thimble (6), and a marking portion (7) is arranged at the bottom end of the punctuation thimble (6).

4. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 3, characterized in that: The punctuation ejector pin (6) is sleeved with a spring (11), and the mounting plate (5) is provided with limiting holes (12) at equal intervals. The middle of the punctuation ejector pin (6) is located in the limiting hole (12), and a first protrusion (13) and a second protrusion (14) are respectively provided on both sides of the punctuation ejector pin (6), and the first protrusion (13) protrudes from the limiting hole (12).

5. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 4, characterized in that: The driving shaft (8) is provided with a driving blade (9), the driving blade (9) is in a spiral structure, and one end of the driving shaft (8) is fixedly connected to a handle (16).

6. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 1, characterized in that: The movable supports (2) are arranged in pairs, and both ends of the movable supports (2) are provided with card slots (17), and the card slots (17) cooperate with the two sides of the base (1). The movable supports (2) are provided with slide slots (18), and the bottom of the cushion block (3) cooperates with the slide slots (18).

7. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 6, characterized in that: The two ends of the bottom of the mounting plate (5) are connected to the base (1) with rotating shafts (19).

8. The marking device for ultra-thin cold-rolled steel strip tensile test specimen according to claim 7, characterized in that: A steel wire (15) is wound between the end of the pad (4) and the base (1), and the steel wire (15) presses the pad (4) and the base (1) tightly.

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