Hardness detector for metal plate preparation and detection method
By designing a hardness detector for metal sheet preparation, the coordinated work of the hammer mechanism and the detection mechanism is used to solve the problem of inaccurate data caused by overall deformation in multi-point detection, and accurate detection and efficient production are achieved.
Patent Information
- Application Number
- CN202510136776.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Thin and easily deformed metal sheets are inaccurate due to overall deformation during multi-point detection, and existing equipment lacks an effective monitoring and compensation mechanism.
A hardness detector for metal sheet preparation is designed, and precise hammering and detection of the sheet is achieved through the coordinated work of the hammering mechanism and the detection mechanism. The hammer mechanism adjusts the hammer force through the coordination of the detection rod, the adjustment disc and the spring; the hammer mechanism quickly switches the support and detection state through the combination of the piston cylinder, the piston rod, the support seat and the pressure sensor, reducing detection time.
The detector can accurately control the hammering force, avoid plate deformation, and ensure detection accuracy; by quickly switching the detection status, multi-point inspection can be efficiently completed and production efficiency can be improved.
Smart Images
Figure CN119880669A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of metal plate detection, and in particular to a hardness detector and a detection method for metal plate preparation. Background Art
[0002] In the field of modern industrial production, thin and easily deformed plates are widely used in many industries such as electronics, aerospace, and automobiles due to their unique physical properties, such as light weight and good flexibility. For these thin plate materials, accurately grasping their hardness distribution is crucial to ensuring product quality and performance. Traditional hardness testing methods, such as Rockwell, Brinell, and Vickers hardness testing, are often not suitable for thin and easily deformed plates because their testing principles often involve large pressure acting on local areas of the plate. They can easily cause excessive deformation or even damage to the plate, and it is impossible to obtain accurate and reliable test data. In order to meet the needs of hardness testing of thin plate materials, some new testing technologies and equipment specifically for thin plates have emerged. These technologies try to reduce damage to thin plates by adopting smaller testing forces, non-contact testing, etc., and at the same time realize multi-point testing of thin plates, in order to fully understand the hardness distribution of thin plates. However, in the actual multi-point testing process, a prominent problem gradually emerged. Since the thin plate itself has The characteristic of easy deformation is that when the detection operation is carried out at multiple points in sequence or simultaneously, even if the detection force applied at each detection point is relatively small, the accumulated force effect of multiple detection points may still cause the entire thin plate to undergo obvious overall deformation. This overall deformation will break the original stress distribution state of the thin plate, causing the internal stress environment of the plate at the subsequent detection points to change. For example, when a thin plate used for the back panel of an electronic device display screen is subjected to multi-point hardness detection, the detection of the first few detection points may cause the thin plate to undergo slight overall bending deformation. When the subsequent detection points are continued to be detected, the plate hardness felt by these detection points has actually been affected by the overall deformation caused by the previous detection points, and is no longer the true hardness of the thin plate in its original state. In this way, the acquired monitoring data will have a large deviation and cannot accurately reflect the hardness distribution of the thin plate in a state without detection interference, thereby affecting the accurate evaluation of the quality of the thin plate and the subsequent processing technology adjustment based on accurate hardness data. In addition, some existing equipment for multi-point detection of thin plates lacks effective solutions to the problem of inaccurate data caused by overall deformation. Although some equipment can realize automated operation of multi-point detection, the monitoring and compensation mechanism for the overall deformation of the thin plate during the detection process is not perfect. Some equipment is not reasonable in the layout design of the detection points, and fails to fully consider the impact of the deformation characteristics of the thin plate on the detection data, further aggravating the degree of data inaccuracy. Summary of the invention
[0003] The object of the present invention is to provide a hardness tester and a testing method for metal sheet preparation, so as to solve the problem of inaccurate data due to deformation in multi-point testing of thinner metal sheets mentioned in the above background technology.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hardness tester for metal sheet preparation, comprising a mounting frame, a placement groove is provided on the inner surface of the lower end of the mounting frame, and a rotating limit plate is installed on the outer surface of the lower end of the mounting frame, a hammer mechanism is provided on the surface of the mounting frame, and the hammering force of the metal sheet is adjusted by adjusting the spring rebound force, and a detection mechanism is provided at the lower end of the mounting frame, and an efficient detection process is realized by switching the support component of the sheet and the detection component after the hammering is completed; The hammer mechanism comprises: a detection rod, the detection rod is slidably mounted on the outer surface of the upper end of the mounting frame, and an adjustment disk is mounted on the outer surface of the middle section of the detection rod, and the outer surface of the adjustment disk is evenly provided with adjustment holes, a sliding limit rod is mounted on the lower end of the detection rod, and a reset baffle is fixedly arranged on the upper end of the detection rod, and a rotating contact rod is mounted on the upper end of the detection rod on one side of the reset baffle; The detection mechanism includes: a piston cylinder, which is fixedly arranged on the inner surface of the lower end of the mounting frame, and a sliding piston rod is installed on the upper end of the piston cylinder, and the upper ends of two adjacent piston rods are respectively fixedly connected with a supporting seat and a pressure sensor, a pressurizing cylinder is fixedly arranged between the lower end side surfaces of two adjacent piston cylinders, and a first electric push rod is fixedly installed on the lower surface of the pressurizing cylinder, one end of the first electric push rod passes through the outer surface of the pressurizing cylinder, and a piston plate is fixedly arranged on one end of the first electric push rod located inside the pressurizing cylinder.
[0005] Preferably, a V-shaped groove is formed at one end of the limiting plate, and the opening of the V-shaped groove of the limiting plate completely coincides with the inner concave corner of the placement groove.
[0006] By adopting the above technical solution, the limiting plate can limit the plate to prevent the plate from falling out and moving.
[0007] Preferably, the lower end of the detection rod is hemispherical in design, the detection rod and the adjusting disk are threadedly connected, and a spring is fixedly connected to the outer surface of the mounting frame above the adjusting disk, and the upper surface of the adjusting disk is fitted with the lower end of the spring above, a spring is connected between the limit rod and the detection rod, and the upper end of the limit rod is mounted on the adjusting disk through an adjustment hole.
[0008] By adopting the above technical solution, the hammering force of the detection rod on the plate can be adjusted separately.
[0009] Preferably, the contact rod is L-shaped, and a spring is connected between the upper end side surface of the contact rod and one end of the reset baffle, and the upper end side surface of the contact rod is in contact with one end of the reset baffle.
[0010] By adopting the above technical solution, the contact rod can rotate relative to the detection rod and reset under the drive of the spring between the contact rod and the reset baffle.
[0011] Preferably, the piston cylinder and the piston rod are connected by sliding friction, an inwardly concave arc groove is provided in the middle of the upper surface of the support seat, the piston cylinder is connected to the pressure cylinder, one end of the first electric push rod passes through the outer surface of the pressure cylinder and is connected to the pressure cylinder by sliding friction, and the piston plate and the pressure cylinder are connected by sliding friction.
[0012] By adopting the above technical solution, the sliding of the piston plate can change the extension state of the piston rods on both sides.
[0013] Preferably, a zone adjustment mechanism is provided at the upper end of the mounting frame, and the hammering force applied by the detection rod to the metal sheet is adjusted by respectively changing the final lifting height of the detection rod in each zone.
[0014] By adopting the above technical solution, the hammering force applied by the detection rod to the metal plate can be adjusted simultaneously according to the area.
[0015] Preferably, the partition adjustment mechanism includes: an angle plate, which is rotatably mounted on the upper outer surface of the mounting frame, and a rotatable displacement rod is mounted on the upper surface of one side of the angle plate, and a sliding rod is fixedly provided on the upper surface of the other side of the angle plate, a driving motor is fixedly mounted on the upper surface of the angle plate where the displacement rod is located, a displacement frame is mounted on the outer surfaces of the displacement rod and the sliding rod, one end of the displacement frame is fixedly connected to an extrusion block, a second electric push rod is fixedly mounted on the upper surface of the mounting frame on one side of the angle plate, and an angle block is fixedly mounted on one end of the second electric push rod.
[0016] By adopting the above technical solution, the angle block can squeeze the detection rod through the inclined surface to make the detection rod slide upward.
[0017] Preferably, the end of the angle plate facing the angle block is designed as a right-angled trapezoid, and the angle block is designed as a right-angled trapezoid, and the inclined surface at one end of the right-angled trapezoid of the angle block is in contact with the inclined surface at one end of the right-angled trapezoid of the angle block, the outer surface of the angle plate is penetrated by the upper end of the detection rod, and the outer surface of the angle plate penetrated by the detection rod is provided with a long strip groove.
[0018] By adopting the above technical solution, the angle plate will not interfere with the detection rod when rotating.
[0019] Preferably, one end of the output shaft of the driving motor is fixedly connected to the rotating shaft of the displacement rod, and the displacement rod is threadedly connected to the displacement frame, and the displacement frame is slidably connected to the sliding rod, the extrusion block is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the extrusion block is arranged upward toward the upper end of the contact rod, and the extrusion block and the reset baffle are respectively located on both sides of the upper end of the contact rod; By adopting the above technical solution, the extrusion block can compress the contact rod through the inclined surface, so that the contact rod cannot rotate relative to the detection rod.
[0020] Compared with the prior art, the invention has the following beneficial effects: the hardness tester for metal sheet preparation: 1. Through the threaded connection between the detection rod and the adjustment disk and the coordination of the spring, the spring rebound force is changed by the position of the adjustment disk, and the hammering force is accurately adjusted to avoid deformation of thin plates due to improper hammering, ensure the accuracy of the detection, and ensure that the data at each point truly reflects the hardness of the plate; Furthermore, the detection mechanism composed of the piston cylinder, piston rod, support seat, pressure sensor and electric push rod can quickly switch the support and detection states, reduce the detection time, efficiently complete the multi-point detection of thin plates, improve the overall production efficiency, and adapt to the rhythm of large-scale production; 2. The angle plate, displacement rod, sliding rod and other parts in the partition adjustment mechanism work together to adjust the lifting height of the detection rod according to the regional characteristics of the plate to control the hammer force, realize partition multi-point differentiated detection, and accurately capture the hardness distribution. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the connection between the second electric push rod and the angle block of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the connection between the pressurizing cylinder and the first electric push rod of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the connection section of the pressurizing cylinder, the first electric push rod and the piston plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the connection between the piston cylinder, the piston rod, the supporting seat and the pressure sensor of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the connection between the mounting frame and the detection rod of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the adjustment disk, the adjustment hole and the limit rod connected to the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the connection section of the detection rod, the reset baffle and the contact rod of the present invention.
[0022] In the figure: 1. mounting frame; 2. placement slot; 3. limit plate; 4. detection rod; 5. adjustment plate; 6. adjustment hole; 7. limit rod; 8. reset baffle; 9. contact rod; 10. piston cylinder; 11. piston rod; 12. supporting seat; 13. pressure sensor; 14. pressurizing cylinder; 15. first electric push rod; 16. piston plate; 17. angle plate; 18. displacement rod; 19. sliding rod; 20. driving motor; 21. displacement frame; 22. extrusion block; 23. second electric push rod; 24. angle block. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0024] See also Figure 1-Figure 8 The present invention provides a technical solution: a hardness tester for metal sheet preparation.
[0025] Embodiment 1: This embodiment discloses a mounting frame 1, a placement groove 2 is provided on the inner surface of the lower end of the mounting frame 1, and a rotating limit plate 3 is installed on the outer surface of the lower end of the mounting frame 1. A hammer mechanism is provided on the surface of the mounting frame 1, and the hammer force of the metal plate is adjusted by adjusting the spring rebound force; The hammer mechanism includes: a detection rod 4, the detection rod 4 is slidably mounted on the outer surface of the upper end of the mounting frame 1, and an adjustment disk 5 is mounted on the outer surface of the middle section of the detection rod 4, and the outer surface of the adjustment disk 5 is evenly provided with adjustment holes 6, a sliding limit rod 7 is mounted on the lower end of the detection rod 4, and a reset baffle 8 is fixedly arranged on the upper end of the detection rod 4, and a rotating contact rod 9 is mounted on the upper end of the detection rod 4 on one side of the reset baffle 8; A V-shaped groove is formed at one end of the limiting plate 3, and the opening of the V-shaped groove of the limiting plate 3 completely coincides with the inner concave corner of the placement groove 2; The lower end of the detection rod 4 is of hemispherical design, the detection rod 4 is threadedly connected to the adjustment disk 5, and the outer surface of the mounting frame 1 above the adjustment disk 5 is fixedly connected with a spring, and the upper surface of the adjustment disk 5 fits with the lower end of the upper spring, a spring is connected between the limit rod 7 and the detection rod 4, and the upper end of the limit rod 7 is engaged with the adjustment disk 5 through the adjustment hole 6; The contact rod 9 is L-shaped, and a spring is connected between the upper end side surface of the contact rod 9 and one end of the reset baffle 8, and the upper end side surface of the contact rod 9 fits with one end of the reset baffle 8; When in use, first place the plate in the placement groove 2, then rotate the limit plate 3 so that the V-shaped opening of the limit plate 3 is misaligned with the inner concave corner of the placement groove 2, so as to achieve the purpose of limiting the plate, and pull the limit rod 7 downward to make the limit rod 7 disengage from the engagement with the adjustment hole 6. At this time, rotate the adjusting disk 5 so that the adjusting disk 5 can adjust the initial compression degree of the spring on the surface of the mounting frame 1 above the adjusting disk 5 through the threaded connection with the detection rod 4, and then release the limit rod 7 so that the limit rod 7 can resume the engagement with the adjustment hole 6 under the action of the spring to limit the adjusting disk 5, so that the adjusting disk 5 cannot rotate. When the upper end of the contact rod 9 is driven to move up by the same amplitude, at this time, due to the different initial compression degrees of the springs on the outer sides of each contact rod 9, after losing the extrusion, the contact rod 9 slides down under the action of the different rebound forces applied by the springs to the adjusting disk 5, and the hammering force applied to the metal plate is also different, so as to achieve the purpose of targeted adjustment of the hammering force.
[0026] Embodiment 2: Based on Embodiment 1, this embodiment discloses that a detection mechanism is provided at the lower end of the mounting frame 1, and an efficient detection process is achieved by switching between the support assembly of the plate and the detection assembly after the hammering is completed; The detection mechanism includes: a piston cylinder 10, the piston cylinder 10 is fixedly arranged on the inner surface of the lower end of the mounting frame 1, and a sliding piston rod 11 is installed on the upper end of the piston cylinder 10, and the upper ends of two adjacent piston rods 11 are respectively fixedly connected with a supporting seat 12 and a pressure sensor 13, a pressurizing cylinder 14 is fixedly arranged between the lower end side surfaces of two adjacent piston cylinders 10, and a first electric push rod 15 is fixedly installed on the lower surface of the pressurizing cylinder 14, one end of the first electric push rod 15 passes through the outer surface of the pressurizing cylinder 14, and a piston plate 16 is fixedly arranged on one end of the first electric push rod 15 located inside the pressurizing cylinder 14; The piston cylinder 10 and the piston rod 11 are connected by sliding friction. An inwardly concave arc groove is provided in the middle of the upper surface of the support seat 12. The piston cylinder 10 is connected to the pressure cylinder 14. One end of the first electric push rod 15 passes through the outer surface of the pressure cylinder 14 and is connected to the pressure cylinder 14 by sliding friction. The piston plate 16 is connected to the pressure cylinder 14 by sliding friction. During the detection process, the support seat 12 supports the lower surface of the plate through contact with it and the arc-shaped groove in the middle of the upper surface avoids the area of the plate that is hammered by the lower end of the detection rod 4, so that the plate will only be partially deformed when hammered and will not affect the mechanical properties of the remaining unhammered parts. After the hammering is completed, the first electric push rod 15 is started, and the first electric push rod 15 drives the piston plate 16 to slide inside the pressurizing cylinder 14. The piston plate 16 injects the air inside the pressurizing cylinder 14 into the piston cylinder 10 on the other side, so that the piston rod 11 drives the pressure sensor 13 to slide up, and the piston rod 11 on the other side drives the support seat 12 to move downward until the upper surface of the pressure sensor 13 contacts the lower surface of the plate area that is hammered. The deformation degree of the plate in the area is judged by reading the readings of each pressure sensor 13 to calculate the relative hardness of the plate.
[0027] Embodiment 3: Based on Embodiment 1 and Embodiment 2, this embodiment discloses that a partition adjustment mechanism is provided at the upper end of the mounting frame 1, and the hammering force applied by the detection rod 4 to the metal plate is adjusted by respectively changing the final lifting height of the detection rod 4 in each area; The partition adjustment mechanism includes: an angle plate 17, the angle plate 17 is rotatably mounted on the outer surface of the upper end of the mounting frame 1, and a rotatable displacement rod 18 is mounted on the upper surface of one side of the angle plate 17, and a sliding rod 19 is fixedly arranged on the upper surface of the other side of the angle plate 17, a driving motor 20 is fixedly mounted on the upper surface of the angle plate 17 where the displacement rod 18 is located, a displacement frame 21 is mounted on the outer surfaces of the displacement rod 18 and the sliding rod 19, one end of the displacement frame 21 is fixedly connected to an extrusion block 22, a second electric push rod 23 is fixedly mounted on the upper surface of the mounting frame 1 on one side of the angle plate 17, and an angle block 24 is fixedly mounted on one end of the second electric push rod 23; One end of the angle plate 17 facing the angle block 24 is designed as a right-angled trapezoid, and the angle block 24 is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the angle block 24 fits with the inclined surface of one end of the right-angled trapezoid of the angle block 24, the outer surface of the angle plate 17 is penetrated by the upper end of the detection rod 4, and the outer surface of the angle plate 17 penetrated by the detection rod 4 is provided with a long strip groove; One end of the output shaft of the driving motor 20 is fixedly connected to the rotating shaft of the displacement rod 18, and the displacement rod 18 is threadedly connected to the displacement frame 21, and the displacement frame 21 is slidably connected to the sliding rod 19, the extrusion block 22 is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the extrusion block 22 is arranged upward toward the upper end of the contact rod 9, and the extrusion block 22 and the reset baffle 8 are respectively located on both sides of the upper end of the contact rod 9; When it is necessary to adjust the detection rod 4 of each area as a whole, the second electric push rod 23 is started to drive the angle block 24 to slide. The angle block 24 squeezes the inclined surface of the angle plate 17 to make one end of the angle plate 17 rotate upward relative to the mounting frame 1, so that the initial distance between the outer surface of the upper end of the contact rod 9 in different areas and the corresponding inclined surface of the squeezing block 22 changes, so that the contact rod 9 is finally driven to move up by a different distance. At this time, when the drive motor 20 is started to drive the displacement frame 21 to slide on the sliding rod 19 relative to the angle plate 17 through the displacement rod 18, the squeezing block 22 squeezes the upper end of the contact rod 9 through the inclined surface. The contact rod 9 cannot rotate due to the obstruction of the reset baffle 8, driving the detection rod 4 below to slide upward until the upper end of the contact rod 9 moves to one end of the right-angle surface of the extrusion block 22 and loses the extrusion of the extrusion block 22. At this time, the contact rod 9 is driven downward by the action of the spring to hammer the plate. After the hammering is completed, the driving motor 20 drives the displacement frame 21 to reset. During the process, the extrusion block 22 squeezes the upper end of the contact rod 9, causing the contact rod 9 to rotate relative to the contact rod 9 and stretch the spring between the reset baffle 8. When the extrusion block 22 is completely reset, the contact rod 9 rotates and resets under the pull of the spring between the reset baffle 8.
[0028] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.
Claims
1. A hardness tester for metal sheet preparation, comprising a mounting frame (1), a placement groove (2) is provided on the inner surface of the lower end of the mounting frame (1), and a rotatable limit plate (3) is installed on the outer surface of the lower end of the mounting frame (1), characterized in that: The surface of the mounting frame (1) is provided with a hammering mechanism, and the hammering force of the metal plate is adjusted by adjusting the spring rebound force. The lower end of the mounting frame (1) is provided with a detection mechanism, and an efficient detection process is achieved by switching between a support component of the plate and a detection component after the hammering is completed. The hammer mechanism comprises: a detection rod (4), the detection rod (4) being slidably mounted on the outer surface of the upper end of the mounting frame (1), an adjustment disk (5) being mounted on the outer surface of the middle section of the detection rod (4), and adjustment holes (6) being evenly formed on the outer surface of the adjustment disk (5), a sliding limit rod (7) being mounted on the lower end of the detection rod (4), a reset baffle (8) being fixedly mounted on the upper end of the detection rod (4), and a rotating contact rod (9) being mounted on the upper end of the detection rod (4) on one side of the reset baffle (8); The detection mechanism comprises: a piston cylinder (10), the piston cylinder (10) being fixedly arranged on the inner surface of the lower end of the mounting frame (1), and a sliding piston rod (11) being installed on the upper end of the piston cylinder (10), and the upper ends of two adjacent piston rods (11) being fixedly connected to a supporting seat (12) and a pressure sensor (13), respectively; a pressurizing cylinder (14) being fixedly arranged between the lower end side surfaces of two adjacent piston cylinders (10), and a first electric push rod (15) being fixedly arranged on the lower surface of the pressurizing cylinder (14), one end of the first electric push rod (15) passing through the outer surface of the pressurizing cylinder (14), and a piston plate (16) being fixedly arranged on one end of the first electric push rod (15) located inside the pressurizing cylinder (14).
2. A hardness tester for metal sheet preparation according to claim 1, characterized in that: A V-shaped groove is formed at one end of the limiting plate (3), and the opening of the V-shaped groove of the limiting plate (3) completely overlaps with the inner concave corner of the placement groove (2).
3. A hardness tester for metal sheet preparation according to claim 1, characterized in that: The lower end of the detection rod (4) is of hemispherical design, the detection rod (4) is threadedly connected to the adjustment disk (5), and a spring is fixedly connected to the outer surface of the mounting frame (1) above the adjustment disk (5), and the upper surface of the adjustment disk (5) is in contact with the lower end of the upper spring, a spring is connected between the limit rod (7) and the detection rod (4), and the upper end of the limit rod (7) is engaged with the adjustment disk (5) through the adjustment hole (6).
4. A hardness tester for metal sheet preparation according to claim 1, characterized in that: The contact rod (9) is L-shaped, and a spring is connected between the upper end side surface of the contact rod (9) and one end of the reset baffle (8), and the upper end side surface of the contact rod (9) is in contact with one end of the reset baffle (8).
5. The hardness tester for metal sheet preparation according to claim 1, characterized in that: The piston cylinder (10) and the piston rod (11) are connected by sliding friction, an inwardly concave arc groove is provided in the middle of the upper surface of the support seat (12), the piston cylinder (10) is connected to the pressure cylinder (14), one end of the first electric push rod (15) passes through the outer surface of the pressure cylinder (14) and is connected to the pressure cylinder (14) by sliding friction, and the piston plate (16) is connected to the pressure cylinder (14) by sliding friction.
6. A hardness tester for metal sheet preparation according to claim 1, characterized in that: The upper end of the mounting frame (1) is provided with a partition adjustment mechanism, which adjusts the hammering force applied by the detection rod (4) to the metal plate by respectively changing the final raised height of the detection rod (4) in each area.
7. A hardness tester for metal sheet preparation according to claim 6, characterized in that: The partition adjustment mechanism comprises: an angle plate (17), the angle plate (17) being rotatably mounted on the outer surface of the upper end of the mounting frame (1), a rotatable displacement rod (18) being mounted on the upper surface of one side of the angle plate (17), and a sliding rod (19) being fixedly arranged on the upper surface of the other side of the angle plate (17), a driving motor (20) being fixedly mounted on the upper surface of the angle plate (17) where the displacement rod (18) is located, a displacement frame (21) being mounted on the outer surfaces of the displacement rod (18) and the sliding rod (19), one end of the displacement frame (21) being fixedly connected to an extrusion block (22), a second electric push rod (23) being fixedly mounted on the upper surface of the mounting frame (1) on one side of the angle plate (17), and an angle block (24) being fixedly mounted on one end of the second electric push rod (23).
8. A hardness tester for metal sheet preparation according to claim 7, characterized in that: One end of the angle plate (17) facing the angle block (24) is designed as a right-angled trapezoid, and the angle block (24) is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the angle block (24) fits with the inclined surface of one end of the right-angled trapezoid of the angle block (24), the outer surface of the angle plate (17) is penetrated by the upper end of the detection rod (4), and the outer surface of the angle plate (17) penetrated by the detection rod (4) is provided with a long strip-shaped groove.
9. A hardness tester for metal sheet preparation according to claim 7, characterized in that: One end of the output shaft of the drive motor (20) is fixedly connected to the rotating shaft of the displacement rod (18), the displacement rod (18) is threadedly connected to the displacement frame (21), and the displacement frame (21) is slidably connected to the sliding rod (19), the extrusion block (22) is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the extrusion block (22) is arranged upward toward the upper end of the contact rod (9), and the extrusion block (22) and the reset baffle (8) are respectively located on both sides of the upper end of the contact rod (9).
10. A method for testing hardness of metal sheet material according to any one of claims 1 to 9, characterized in that: The detection method comprises the following steps: S1, placing the plate in the placement slot (2), and rotating the limit plate (3) to limit the plate; S2, rotating the adjustment disk (5) to adjust the initial compression degree of the spring above the adjustment disk (5); S3, the plate is supported by the support seat (12), and the concave arc groove in the middle of the support seat (12) avoids the area where the lower end of the detection rod (4) hits the plate; S4, starting the second electric push rod (23) to drive the angle block (24) to slide and adjust the angle of the angle plate (17) relative to the mounting frame (1); S5, the driving motor (20) is started to drive the displacement frame (21) to slide through the extrusion block (22) to squeeze the contact rod (9), and the contact rod (9) slides upward until the upper end of the contact rod (9) loses the extrusion of the extrusion block (22), and the contact rod (9) is driven downward by the action of the spring to hammer the plate; S6. After the hammering is completed, the first electric push rod (15) drives the piston plate (16) to slide inside the pressure cylinder (14), the pressure sensor (13) slides up and the support seat (12) moves down, and the pressure sensor (13) is in contact with the lower surface of the hammered plate area to collect readings and calculate the relative hardness of the plate.