A fully automatic blade sharpness testing machine

Abstract

The present invention relates to the field of blade detection technology, and in particular to a fully automatic blade sharpness testing machine, comprising a fixed platform, a power assembly, an extrusion plate, a fixture and a correction block, etc.; the fixed platform is provided with a power assembly; the power assembly is connected to a fixture for conveniently installing a razor blade; the middle of the razor blade is provided with a positioning groove; the four corners of the razor blade are provided with notches; the fixture is provided with two limit grooves; the power assembly is connected to an extrusion plate for squeezing and fixing the razor blade, and the extrusion plate is located behind the fixture; the extrusion plate is connected to a correction block for correcting the razor blade; the correction block is arranged in an arc shape, and the arc edge of the correction block faces the positioning groove in the middle of the razor blade. The test paper in the receiving box is pressed and fixed by the box cover, which is conducive to reducing the deviation of the subsequent test paper when it is cut and squeezed by the razor blade, and preventing the cutting state of the razor blade from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of blade detection, in particular to a fully automatic blade sharpness testing machine. Background Art

[0002] A blade tester is a device specifically used to test the sharpness of a knife blade. It primarily assesses the sharpness of a blade by measuring the force required to cut a specific test material. When the blade cuts into the material, it generates a certain amount of cutting resistance. The tester senses this resistance through a precision sensor and converts it into an electrical signal. This resistance is then processed and analyzed to produce a numerical value representing the sharpness.

[0003] When using an existing blade tester to test the sharpness of a razor blade, the existing method is to manually place and fix the blade, and the blade also needs to be manually corrected. When the blade is manually fixed, the blade is tilted and offset, which changes the initial state of the blade, thereby affecting the cutting performance, resulting in a deviation between the detected blade sharpness and the actual sharpness value.

[0004] Furthermore, when using an existing blade tester to test the sharpness of a razor blade, a special test paper is generally cut to test the sharpness of the blade. During the cutting process, the test paper will produce paper scraps, which will adhere to the blade edge, increasing the cutting pressure of the blade, affecting the cutting performance of the blade, and causing a deviation between the detected blade sharpness and the actual sharpness value. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing blade edge tester that uses a manual method of placing and fixing the blade, the blade is tilted and offset, and the blade produces paper scraps when cutting the test paper, and the paper scraps adhere to the blade edge, resulting in deviations in the detected blade sharpness, the present invention provides a fully automatic blade sharpness tester.

[0006] The technical solution of the present invention is: a fully automatic blade sharpness testing machine, comprising a fixed platform; also comprising a power component, an extrusion plate, a fixture, a correction block, a limit component and a receiving component; the fixed platform is provided with a power component; the power component is connected to a fixture for conveniently installing a razor blade; the middle part of the razor blade is provided with a positioning groove; the four corners of the razor blade are all provided with notches; two limit grooves are provided on the fixture; the power component is connected to an extrusion plate for extruding and fixing the razor blade, and the extrusion plate is located behind the fixture; the extrusion plate is connected to a correction block for correcting the razor blade; the correction block is arranged in an arc shape, and the arc edge of the correction block faces the positioning groove in the middle part of the razor blade; the fixture is provided with a limit component for limiting and calibrating the razor blade; the fixed platform is provided with a receiving component for loading and fixing test paper.

[0007] More preferably, the power assembly includes a slide rail, an electric slider, a fixed frame and a telescopic drive member; a plurality of slide rails are fixedly connected to the fixed platform; each slide rail is slidably connected to an electric slider; all the electric sliders are commonly fixed to a fixed frame; the front side of the fixed frame is fixed to the fixer; the telescopic drive member is fixed to the lower side of the fixed frame; the telescopic end of the telescopic drive member is fixed to the extrusion plate.

[0008] More preferably, the limiting assembly includes a limiting rod and a guide rod; a plurality of limiting rods for receiving the limiting razor blade are rotatably connected to the fixture, and a torsion spring is provided between each limiting rod and the fixture, and a pressing portion is provided on the limiting rod; a plurality of guide rods are fixed to the extrusion plate; the guide rods are located behind the limiting rods.

[0009] More preferably, the receiving assembly includes two slide rails, two electric sliders, a pressure sensor, a receiving box and a box cover; the two slide rails are fixed to the fixed table; the two electric sliders are slidably connected to the two slide rails; the upper side of the two electric sliders is connected to the pressure sensor; the upper side of the pressure sensor is connected to a receiving box for loading and fixing test paper sheets; the receiving box is provided with several cutting grooves for avoiding razor blades; the receiving box is connected to a box cover for fixing test paper sheets; the box cover is provided with several avoidance grooves; each cutting groove coincides with an avoidance groove.

[0010] More preferably, the correction block is wedge-shaped, and the cross-sectional area of the correction block on the side close to the fixture is smaller than the cross-sectional area of the side away from the fixture.

[0011] More preferably, the upper end of each limiting groove is configured to be flared.

[0012] More preferably, a cleaning component is also included, which includes an exhaust pipe and a rubber diaphragm; a plurality of exhaust pipes for sucking paper scraps from the razor blade are fixedly connected to the fixture; the exhaust pipes are connected to an external air pump; a plurality of collection chambers are opened in the fixture; each exhaust pipe is connected to the corresponding collection chamber; and a rubber diaphragm is fixedly connected to the bottom of each collection chamber.

[0013] More preferably, it also includes a movable block and an elastic member; a movable cavity is opened in the receiving box; each cutting groove is connected to the movable cavity; a movable block is slidably connected in the movable cavity; a plurality of support parts for squeezing the test paper are provided on the movable block; a plurality of elastic members are fixed to the movable block, and the elastic members are springs; each elastic member is fixed to the top of the movable cavity.

[0014] More preferably, a reserved slot for avoiding a razor blade is provided on the upper side of each supporting portion.

[0015] More preferably, an elastic block for squeezing and fixing the test paper is fixedly connected to the front and rear sides of the avoidance groove on the box cover.

[0016] Compared with the prior art, the present invention has the following advantages: after the razor blade is corrected by the correction block, the extrusion plate directly squeezes and fixes the razor blade, which not only improves the convenience of razor blade installation, but also prevents the razor blade from tilting and deviating, thereby avoiding affecting the cutting performance of the razor blade, and ensuring the accuracy of the detected razor blade sharpness value;

[0017] The test paper in the box is pressed and fixed by the box cover, which helps to reduce the deviation of the subsequent test paper when it is cut and squeezed by the razor blade, thereby preventing the cutting state of the razor blade from being affected;

[0018] The paper scraps adhering to the razor blade are sucked and collected through the air suction pipe to prevent the paper scraps adhering to the cutting edge of the razor blade from affecting the cutting performance of the razor blade and avoiding the deviation between the detected sharpness of the razor blade and the actual sharpness value;

[0019] The upper test paper is pressed and fixed by the elastic block to prevent the test paper from losing the pressing and fixing of the box cover and affecting the state of the razor blade when cutting the test paper, thereby ensuring the accuracy of the detected razor blade sharpness value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the fully automatic blade sharpness testing machine of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the power assembly, the fixer, the receiving assembly and the exhaust pipe of the present invention;

[0022] Figure 3 This is a schematic diagram of the combined three-dimensional structure of the power assembly, the fixer and the cleaning assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the combined three-dimensional structure of the power assembly, the fixer, the correction block and the rubber scraper of the present invention;

[0024] Figure 5 This is an exploded view of the structure of the container box and the box cover of the present invention;

[0025] Figure 6 This is a schematic diagram of the combined three-dimensional structure of the container box, the box cover and the movable block of the present invention;

[0026] Figure 7 This is a schematic diagram of the combined three-dimensional structure of the container box, the box cover, the movable block and the elastic member of the present invention;

[0027] Figure 8 It is a side view of the assembly of the container box, the box cover, the movable block and the elastic member of the present invention.

[0028] Among them, the above-mentioned drawings include the following figure marks: 1-fixed table, 2-fixer, 2001-limiting groove, 2002-collecting chamber, 3-correction block, 4-razor blade, 101-slide rail one, 102-electric slider one, 103-fixed frame, 104-telescopic driving member, 105-extrusion plate, 106-limiting rod, 10601-pressing part, 107-guide rod, 201-slide rail two, 202-electric slider two, 203-pressure sensor, 204-receiving box, 20401-cutting groove, 20402-movable chamber, 205-box cover, 20501-avoidance groove, 301-exhaust pipe, 302-rubber diaphragm, 401-movable block, 40101-support part, 40102-reserved seam, 402-elastic part, 403-elastic block. DETAILED DESCRIPTION

[0029] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those skilled in the art will recognize that terms such as "above," "below," "upwardly," "downwardly," and the like are used to describe the drawings and are not intended to limit the scope of the present invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and are not intended to limit the scope of the present invention in any way.

[0030] Example 1: Figures 1-6 As shown, a fully automatic blade sharpness testing machine includes a fixed platform 1;

[0031] It also includes a power component, an extrusion plate 105, a fixture 2, a correction block 3, a limit component and a receiving component; a power component is provided on the fixed platform 1; the fixture 2 is connected to the power component; the middle of the razor blade 4 has a positioning groove; the four corners of the razor blade 4 are all notched; two limit grooves 2001 that are symmetrical on the left and right are provided on the fixture 2; the power component is connected to the extrusion plate 105, and the extrusion plate 105 is located behind the fixture 2, and the razor blade 4 is pressed onto the fixture 2 for fixation through the extrusion plate 105; the extrusion plate 105 is connected to the correction block 3; the correction block 3 is arranged in an arc shape, and the arc edge of the correction block 3 faces the positioning groove in the middle of the razor blade 4, which is convenient for the front end of the correction block 3 to be inserted into the positioning groove in the middle of the razor blade 4, thereby improving the docking effect between the correction block 3 and the positioning groove in the middle of the razor blade 4, and enhancing the subsequent guiding and alignment effect of the correction block 3 on the razor blade 4; a limiting component is provided on the fixture 2; and a receiving component is provided on the fixed platform 1.

[0032] The power assembly includes a slide rail 101, an electric slider 102, a fixed frame 103 and a telescopic drive member 104; two slide rails 101 are fixed to the fixed platform 1 in a bilaterally symmetrical manner; each slide rail 101 is slidably connected to an electric slider 102; all electric sliders 102 are commonly fixed to a fixed frame 103; the front side of the fixed frame 103 is fixed to the holder 2; the lower side of the fixed frame 103 is fixed to the telescopic drive member 104, which is an electric push rod; the telescopic end of the telescopic drive member 104 is fixed to the extrusion plate 105.

[0033] The limiting assembly includes a limiting rod 106 and a guide rod 107; two limiting rods 106 that are symmetrical on the left and right are rotatably connected to the fixer 2, and a torsion spring is provided between each limiting rod 106 and the fixer 2, and a pressing portion 10601 is provided on the limiting rod 106; two guiding rods 107 that are symmetrical on the left and right are fixed to the extrusion plate 105; the guide rod 107 is located behind the limiting rod 106.

[0034] The receiving assembly includes a second slide rail 201, a second electric slider 202, a pressure sensor 203, a receiving box 204 and a box cover 205; the second slide rail 201 is fixed to the fixed platform 1; the second electric slider 202 is slidably connected to the second slide rail 201; the pressure sensor 203 is detachably connected to the upper side of the second electric slider 202; the receiving box 204 is detachably connected to the upper side of the pressure sensor 203; a plurality of cutting grooves 20401 are provided on the receiving box 204; the box cover 205 is detachably connected to the receiving box 204; a plurality of avoidance grooves 20501 are provided on the box cover 205; each cutting groove 20401 coincides with an avoidance groove 20501.

[0035] The correction block 3 is wedge-shaped, and the cross-sectional area of the side of the correction block 3 close to the fixture 2 is smaller than the cross-sectional area of the side away from the fixture 2, which facilitates the insertion of the front end of the correction block 3 into the positioning groove in the middle of the razor blade 4, improves the docking effect between the correction block 3 and the positioning groove in the middle of the razor blade 4, and enhances the subsequent guiding and alignment effect of the correction block 3 on the razor blade 4.

[0036] The upper end of each limiting groove 2001 is configured to be flared, so as to facilitate preliminary calibration and alignment of the razor blade 4 when the razor blade 4 enters the limiting groove 2001 .

[0037] It also includes a cleaning component, which includes an exhaust pipe 301 and a rubber diaphragm 302; two exhaust pipes 301 are fixedly connected to the holder 2 in a left-right symmetrical manner; the exhaust pipes 301 are connected to an external air pump; two collection chambers 2002 are opened in the holder 2 in a left-right symmetrical manner; each exhaust pipe 301 is connected to the corresponding collection chamber 2002; and a rubber diaphragm 302 is fixedly connected to the bottom of each collection chamber 2002.

[0038] When testing the sharpness of the razor blade 4, the staff first puts the stacked test paper into the receiving box 204, and then covers the box cover 205 on the receiving box 204 so that the cutting groove 20401 coincides with the avoidance groove 20501. The test paper in the receiving box 204 is pressed and fixed by the box cover 205, which is helpful to reduce the deviation of the subsequent test paper when it is cut and squeezed by the razor blade 4, and prevents the cutting state of the razor blade 4 from being affected. After the test paper is placed, the staff fits the razor blade 4 to the front side of the holder 2 from front to back, and then slides the razor blade 4 downward on the holder 2 to make the razor blade 4 The left and right sides of the razor blade 4 are stuck in the limit groove 2001. During this process, the limit groove 2001 with a flared upper end is used to guide the razor blade 4, so that the razor blade 4 can be stuck in the limit groove 2001. When the staff continues to slide the razor blade 4 downward in the limit groove 2001, since the four corners of the razor blade 4 are provided with notches, the notches on the lower side of the razor blade 4 contact the limit rod 106. At this time, the staff releases the pressing and fixing of the razor blade 4, blocks and limits the razor blade 4 through the limit rod 106, and performs preliminary calibration and alignment on the razor blade 4, which is convenient for subsequent correction of the razor blade 4.

[0039] When the razor blade 4 is blocked by the limit rod 106, the telescopic end of the telescopic driving member 104 is controlled to extend, driving the extrusion plate 105 to move forward, so that the extrusion plate 105 drives the correction block 3 and the guide rod 107 to move forward together. Since the middle part of the razor blade 4 is provided with a positioning groove, the front end of the correction block 3 first passes through the positioning groove in the middle part of the razor blade 4. In this process, the correction block 3 is arranged in an arc shape, and the thickness gradually decreases from back to front, which facilitates the insertion of the front end of the correction block 3 into the positioning groove in the middle part of the razor blade 4, thereby improving the docking effect of the correction block 3 and the positioning groove in the middle part of the razor blade 4, and enhancing the subsequent guiding and alignment effect of the correction block 3 on the razor blade 4. When the extrusion plate 105 drives the correction block 3 to insert into the positioning groove in the middle part of the razor blade 4, the extrusion plate 105 drives the guide rod 107 to move forward, inserting it between the limit rod 106 and the razor blade 4, and squeezing the limit rod 106 through the guide rod 107, so that the limit rod 106 rotates upward to a horizontal state. When the razor blade 4 is corrected by the correction block 3, the extrusion plate 105 passes through the rear portion of the holder 2 and squeezes the razor blade 4 onto the holder 2 to fix the razor blade 4. The present invention corrects the razor blade 4 by the correction block 3, so that the extrusion plate 105 directly squeezes and fixes the razor blade 4. Compared with the existing method of manually installing and correcting the razor blade 4, the present invention not only improves the convenience of installation of the razor blade 4, but also prevents the razor blade 4 from tilting and deviating, thereby avoiding affecting the cutting performance of the razor blade 4 and ensuring the accuracy of the detected sharpness value of the razor blade 4.

[0040] After the razor blade 4 is fixed, the electric slider 202 is controlled to drive the pressure sensor 203 and the receiving box 204 to slide backward on the slide rail 201 to below the razor blade 4, and then the electric slider 102 is controlled to drive the fixing frame 103 and the holder 2 to slide downward on the slide rail 101, so that the holder 2 drives the razor blade 4 to descend and insert it into the avoidance groove 20501 and the cutting groove 20401 in turn, thereby cutting the test paper in the receiving box 204. After completing one cutting, the electric slider 102 is controlled to drive the fixing frame 103 and the holder 2 to slide downward on the slide rail 101, so that the holder 2 drives the razor blade 4 to descend and insert it into the avoidance groove 20501 and the cutting groove 20401 in turn, and then cut the test paper in the receiving box 204. 102 drives the fixing frame 103 and the holder 2 to rise, so that the razor blade 4 is lifted from the receiving box 204, and then controls the electric slider 202 to drive the pressure sensor 203 and the receiving box 204 to slide backward again, so that the receiving box 204 drives the box cover 205 to slide backward together, thereby moving the next avoidance groove 20501 to the bottom of the razor blade 4, and then controls the electric slider 102 to drive the holder 2 to lower the razor blade 4 into the avoidance groove 20501 and the cutting groove 20401, and then align the test paper again. During the cutting process, the maximum downward force of the razor blade 4 each time it descends to cut the test paper is recorded by the pressure sensor 203, and the maximum downward force is transmitted to the fixed table 1 to generate a trend graph, thereby judging the sharpness of the razor blade 4. When the sharpness test of the razor blade 4 is completed, the staff only needs to remove the receiving box 204 from the pressure sensor 203, then open the box cover 205, and pour out the cut test paper in the receiving box 204. When the razor blade 4 is removed, the limit rod 106 is guided. The guide rod 107 is squeezed into a horizontal state. At the same time, the staff only needs to press the pressing part 10601 to the left and right sides of the holder 2 to keep the limit rod 106 in a horizontal state, and then control the telescopic end of the telescopic drive member 104 to retract, so that the squeezing plate 105 drives the correction block 3 and the guide rod 107 to move backward, releasing the squeezing and fixing of the razor blade 4 by the squeezing plate 105, and at the same time releasing the limit of the razor blade 4 by the correction block 3, so that the razor blade 4 falls from the holder 2, and the disassembly of the razor blade 4 can be completed conveniently.

[0041] Furthermore, when the razor blade 4 is repeatedly raised and lowered to cut the test paper, the test paper generates paper scraps when rubbing against the razor blade 4 and adheres to the cutting edge of the razor blade 4, affecting the cutting performance of the razor blade 4 and causing a deviation between the detected sharpness of the razor blade 4 and the actual sharpness value. The specific solution is as follows:

[0042] After the razor blade 4 rises each time after cutting, the external air pump is controlled to suction the collecting chamber 2002 through the exhaust pipe 301, so that the rubber diaphragm 302 is sucked by the suction force to open toward the collecting chamber 2002, and then the suction force acts on the razor blade 4 to suck and collect the paper scraps adhering to the razor blade 4, thereby preventing the cutting performance of the razor blade 4 from being affected by the paper scraps adhering to the cutting edge of the razor blade 4, and avoiding the deviation between the detected sharpness of the razor blade 4 and the actual sharpness value. When the razor blade 4 falls again, the external air pump is controlled to stop suction, so that the rubber diaphragm 302 re-seals the bottom of the collecting chamber 2002 under the action of its own elastic force, thereby preventing the paper scraps that have not been sucked away and remain in the collecting chamber 2002 from falling out, and preventing the paper scraps from adhering to the razor blade 4 again.

[0043] It is also taken into consideration that dust and other granular impurities may adhere to the cutting edge of the razor blade 4 to be tested when it is installed. When the razor blade 4 subsequently cuts the test paper, it is easily affected by the granular impurities, resulting in a deviation between the detected sharpness value of the razor blade 4 and the actual sharpness value. Therefore, after the razor blade 4 is squeezed and fixed to the holder 2 by the squeezing plate 105, the external air pump is controlled to suction the collection chamber 2002 through the suction pipe 301, so that the suction force acts on the razor blade 4, and the dust and other granular impurities adhered to the razor blade 4 are sucked and collected, thereby preventing the dust and other granular impurities from affecting the detected sharpness value of the razor blade 4.

[0044] Example 2: Based on Example 1, Figure 6-Figure 8 As shown, it also includes a movable block 401 and an elastic member 402; a movable cavity 20402 is opened in the receiving box 204; each cutting groove 20401 is connected to the movable cavity 20402; a movable block 401 is slidably connected in the movable cavity 20402; a plurality of support parts 40101 are provided on the movable block 401; two elastic members 402 are fixedly connected to the movable block 401 in a front-to-back symmetrical manner, and the elastic members 402 are springs; each elastic member 402 is fixedly connected to the top of the movable cavity 20402.

[0045] A reserved seam 40102 is provided on the upper side of each support portion 40101 .

[0046] An elastic block 403 is fixedly connected to the front and rear sides of the avoidance groove 20501 on the box cover 205.

[0047] It is also considered that when using test paper to test the sharpness of the razor blade 4, the staff will appropriately twist the paper to loosen the paper fibers appropriately, so that the test results are more consistent with actual usage. However, since the test paper is in the form of long strips, the stacked test paper is prone to be messy after being twisted, making it difficult to place the test paper in the receiving box 204 due to the mess, affecting the subsequent cutting test work. The specific solution is as follows:

[0048] When the test paper needs to be twisted, the staff first puts the test paper into the receiving box 204 and covers the box lid 205. Then the staff picks up the receiving box 204 and repeatedly presses the movable block 401 upward on the receiving box 204, so that the support part 40101 extends from the cutting groove 20401 in the movable cavity 20402 to squeeze the test paper, so that the test paper protrudes upward from the avoidance groove 20501. While realizing the convenient twisting operation of the test paper, it prevents the stacked test paper from being stacked in a messy manner, so as to avoid affecting the subsequent cutting and detection work.

[0049] When the razor blade 4 descends to cut the test paper, the stacked test paper is supported by the support part 40101 to prevent the test paper from sinking into the cutting groove 20401 due to the downward pressure of the razor blade 4 during cutting, thereby avoiding affecting the cutting performance of the razor blade 4 due to the change in the state of the test paper, and ensuring the accuracy of the detected sharpness value of the razor blade 4. While the support part 40101 supports the test paper, the reserved gap 40102 is used to ensure that the razor blade 4 can be stuck in the reserved gap 40102 each time the test paper is cut, and thus the stacked test paper can be cut through each time, preventing the test paper stacked at the bottom from being unable to be completely cut through by the razor blade 4 and affecting the judgment of the sharpness of the razor blade 4, further ensuring the accuracy of the detected sharpness value of the razor blade 4.

[0050] It is also considered that when testing the sharpness of the razor blade 4, due to the gaps between the stacked test papers, when the stacked test papers are cut by the razor blade 4, the test papers are squeezed downward by the razor blade 4 and the cutting position is depressed downward, and the depressed position of the test papers cannot rebound and reset, so that the upper side of the test paper is separated from the top of the inner side of the box cover 205, resulting in the test paper losing the pressing and fixing of the box cover 205, thereby affecting the state of the razor blade 4 when cutting the test paper, and reducing the accuracy of the sharpness value of the razor blade 4 detected. Therefore, the present invention is to cover the test paper stacked in the receiving box 204 with the box cover 205. The elastic block 403 is pressed and fixed on the upper test paper by the elastic block 403. At this time, the elastic block 403 is deformed due to the pressure of the box cover 205. When the test paper is squeezed downward by the razor blade 4, a depression is formed, so that the upper side of the test paper is separated from the top of the inner side of the box cover 205. The deformed elastic block 403 rebounds downward and resets as the test paper is depressed, and continues to press and fix the test paper by its own elastic force, preventing the test paper from losing the pressing and fixing of the box cover 205 and affecting the state of the razor blade 4 when cutting the test paper, thereby ensuring the accuracy of the sharpness value of the razor blade 4 detected.

[0051] When the test paper is depressed by the downward pressure of the razor blade 4, the upper test paper is pressed and fixed by the elastic block 403. At the same time, the friction force when the elastic block 403 contacts the upper test paper prevents the upper test paper from being displaced toward the cutting position due to the downward pressure of the razor blade 4, thereby avoiding affecting the state of the razor blade 4 when cutting the test paper, and further ensuring the accuracy of the detected sharpness value of the razor blade 4.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fully automatic blade sharpness testing machine, comprising a fixed table (1); characterized in that: The invention also includes a power assembly, an extrusion plate (105), a fixer (2), a correction block (3), a limit assembly and a receiving assembly; the fixing platform (1) is provided with a power assembly; the power assembly is connected to a fixer (2) for conveniently installing a razor blade (4); the razor blade (4) has a positioning groove in the middle; the four corners of the razor blade (4) are notched; the fixer (2) is provided with two limit grooves (2001); the power assembly is connected to a fixing block for squeezing and fixing the razor blade (4) is provided with an extrusion plate (105), and the extrusion plate (105) is located behind the holder (2); a correction block (3) for correcting the razor blade (4) is connected to the extrusion plate (105); the correction block (3) is arranged in an arc shape, and the arc edge of the correction block (3) faces the positioning groove in the middle of the razor blade (4); a limiting component for limiting and calibrating the razor blade (4) is provided on the holder (2); and a receiving component for loading and fixing the test paper is provided on the fixing table (1); The receiving assembly comprises a second slide rail (201), a second electric slider (202), a pressure sensor (203), a receiving box (204) and a box cover (205); the second slide rail (201) is fixedly connected to the fixed platform (1); the second electric slider (202) is slidably connected to the second slide rail (201); the upper side of the second electric slider (202) is connected to the pressure sensor (203); the upper side of the pressure sensor (203) is connected to the receiving box (204) for loading and fixing test paper; the receiving box (204) is provided with a plurality of cutting grooves (20401) for avoiding razor blades (4); the receiving box (204) is connected to the box cover (205) for fixing the test paper; the box cover (205) is provided with a plurality of avoiding grooves (20501); each cutting groove (20401) overlaps with an avoiding groove (20501); The invention also includes a movable block (401) and an elastic member (402); a movable cavity (20402) is provided in the receiving box (204); each cutting groove (20401) is communicated with the movable cavity (20402); a movable block (401) is slidably connected in the movable cavity (20402); a plurality of support portions (40101) for squeezing the test paper are provided on the movable block (401); a plurality of elastic members (402) are fixedly connected to the movable block (401), and the elastic members (402) are springs; each elastic member (402) is fixedly connected to the top of the movable cavity (20402).

2. The fully automatic blade sharpness testing machine according to claim 1, characterized in that: The power assembly includes a slide rail (101), an electric slider (102), a fixed frame (103) and a telescopic driving member (104); a plurality of slide rails (101) are fixedly connected to the fixed platform (1); each slide rail (101) is slidably connected to an electric slider (102); all the electric sliders (102) are commonly fixedly connected to a fixed frame (103); the front side of the fixed frame (103) is fixedly connected to the holder (2); the lower side of the fixed frame (103) is fixedly connected to the telescopic driving member (104); the telescopic end of the telescopic driving member (104) is fixedly connected to the extrusion plate (105).

3. The fully automatic blade sharpness testing machine according to claim 2, characterized in that: The limiting assembly comprises a limiting rod (106) and a guide rod (107); a plurality of limiting rods (106) for receiving the limiting razor blade (4) are rotatably connected to the holder (2), a torsion spring is provided between each limiting rod (106) and the holder (2), and a pressing portion (10601) is provided on the limiting rod (106); a plurality of guide rods (107) are fixedly connected to the extrusion plate (105); the guide rods (107) are located behind the limiting rods (106).

4. The fully automatic blade sharpness testing machine according to claim 3, characterized in that: The correction block (3) is wedge-shaped, and the cross-sectional area of the side of the correction block (3) close to the fixator (2) is smaller than the cross-sectional area of the side away from the fixator (2).

5. The fully automatic blade sharpness testing machine according to claim 1, characterized in that: The upper end of each limiting groove (2001) is configured to be flared.

6. The fully automatic blade sharpness testing machine according to claim 4, characterized in that: The cleaning assembly further comprises an air extraction pipe (301) and a rubber diaphragm (302); a plurality of air extraction pipes (301) for extracting paper scraps from the razor blade (4) are fixedly connected to the holder (2); the air extraction pipes (301) are connected to an external air pump; a plurality of collecting chambers (2002) are provided in the holder (2); each air extraction pipe (301) is communicated with a corresponding collecting chamber (2002); and a rubber diaphragm (302) is fixedly connected to the bottom of each collecting chamber (2002).

7. The fully automatic blade sharpness testing machine according to claim 1, characterized in that: A reserved slot (40102) for accommodating a razor blade (4) is provided on the upper side of each support portion (40101).

8. The fully automatic blade sharpness testing machine according to claim 1, characterized in that: The front and rear sides of the avoidance groove (20501) on the box cover (205) are both fixedly connected with an elastic block (403) for squeezing and fixing the test paper.

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