An electric Shore hardness tester

Abstract

The present invention relates to the technical field of hardness testers, and in particular to an electric Shore hardness tester, wherein a lifting mechanism is arranged on a column; a lifting seat is arranged on the lifting mechanism; a photoelectric switch fixing seat is fixed on the lifting seat; a plurality of photoelectric switches are arranged in sequence along the height direction on the photoelectric switch fixing seat; a swing rod, a first pull-down assembly and a second pull-down assembly are hinged on the lifting seat; a light shielding sheet and a pull rod are fixed at the end of the swing rod; a short blocking portion and a high blocking portion are arranged in sequence on the path of the pull rod moving upward; a support member is fixed on the probe fixing seat; and the rod body of the swing rod is pressed against the support member. When using the present invention, a plurality of photoelectric sensors are arranged to control the pressure of the swing rod pressed against the support member, so as to realize the switching of three hardness testers of type A, type D and type OO, which is more convenient to use, reduces the purchase cost of the measuring equipment and reduces the space occupied by the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of hardness testers, and in particular to an electric Shore hardness tester. Background Art

[0002] The electric Shore hardness tester is an upgraded version of the handheld Shore hardness tester. Due to the characteristics of the use of the Shore hardness tester, it has high requirements on the use method during normal measurement. The human stability will deteriorate after long-term use. Therefore, the electric Shore hardness tester is designed to free human hands and has the advantages of stable, fast and long-term measurement accuracy.

[0003] Traditional electric Shore hardness testers can replace handheld Shore hardness testers in terms of function, but they have the same shortcomings as handheld Shore hardness testers, and have the disadvantage of only being able to measure a single type. For example, the A-type, D-type, and OO-type electric Shore hardness testers can only measure the Shore hardness values ​​in the corresponding range, and the force applied to the probe is 1~1.1kg for A-type, 5~5.5kg for D-type, and 400g for OO-type. The three types of hardness testers cannot be switched, so if you need to measure three different hardnesses, you will need to have three types of hardness testers, A-type, D-type, and OO-type, which increases the testing cost and is very inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide an electric Shore hardness tester in view of the defects and shortcomings of the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] An electric Shore hardness tester described in the present invention comprises a base and a column fixed on the base; a lifting mechanism is arranged on the column; a lifting seat is arranged on the lifting mechanism; a probe fixing seat is slidably connected to the lifting seat; a detection head is fixed on the probe fixing seat; a photoelectric switch fixing seat is fixed on the lifting seat; a plurality of photoelectric switches are arranged in sequence along the height direction on the photoelectric switch fixing seat; a swing rod, a first pull-down assembly and a second pull-down assembly are hinged on the lifting seat; a shading sheet and a pull rod are fixed at the end of the swing rod; a high blocking part is arranged at the end of the first pull-down assembly; a short blocking part is arranged at the end of the second pull-down assembly; the short blocking part and the high blocking part are arranged in sequence on the path of the pull rod moving upward; a support member is fixed on the probe fixing seat; and the rod body of the swing rod is pressed against the support member.

[0007] Furthermore, the support member is a roller; the rod body of the swing rod is pressed tightly against the wheel body of the roller.

[0008] Furthermore,: the lifting mechanism includes a screw rod, a slider and a motor; one end of the motor is fixed on the column; the other end of the motor is fixedly connected to the screw rod; the screw rod is rotatably connected to the column; the slider is slidably connected to the column; the screw rod is threadedly connected to the slider; the lifting seat is fixed on the slider.

[0009] Furthermore, the high blocking portion and the short blocking portion are both in an "n" shape with the opening facing each other; and the high blocking portion and the short blocking portion are both sleeved on the rod body of the pull rod.

[0010] Furthermore, the first pull-down component and the second pull-down component are both springs.

[0011] Furthermore, a touch control screen is fixed on the lifting seat.

[0012] After adopting the above structure, the beneficial effects of the present invention are as follows: an electric Shore hardness tester described in the present invention has a lifting mechanism on the column; a lifting seat is provided on the lifting mechanism; a probe fixing seat is slidably connected to the lifting seat; a detection head is fixed on the probe fixing seat; a photoelectric switch fixing seat is fixed on the lifting seat; a plurality of photoelectric switches are arranged in sequence along the height direction on the photoelectric switch fixing seat; a swing rod, a first pull-down assembly and a second pull-down assembly are hinged on the lifting seat; a shading sheet and a pull rod are fixed at the end of the swing rod; a high blocking part is provided at the end of the first pull-down assembly; a short blocking part is provided at the end of the second pull-down assembly; the short blocking part and the high blocking part are arranged in sequence on the path of the pull rod moving upward; a support member is fixed on the probe fixing seat; and the rod body of the swing rod is pressed against the support member. When the present invention is used, a testing table for placing workpiece A is provided directly below the testing head; the photoelectric switches are all provided on the movement path of the shading sheet; after the lifting mechanism is started, it can drive the lifting seat on the slider to do lifting movement. During the downward movement of the lifting seat, the testing head is first pressed down onto the surface of the workpiece, and then the lifting seat continues to descend, so the testing head slides upward relative to the lifting seat, and the support member on the probe fixing seat pushes the swing rod to swing upward. When the shading sheet moves to the upper initial position and a photoelectric switch is applied, the swing rod exerts a pressure on the support member due to its own gravity and the gravity of the probe fixing seat. The pressure applied to the testing head is the pressure required by the OO type hardness tester. At this time, it is a OO type hardness tester. After the reading is stable, the hardness value can be measured; after the A type testing head is replaced, the lifting mechanism is started to drive the lifting seat on the slider to do lifting and lowering. Movement, during the downward movement of the lifting seat, it first bypasses the third photoelectric switch from the bottom to the top, and the pull rod pulls the second pull-down component, so the second pull-down component applies a pulling force to the pull rod. At this time, the pressure on the support is the pressure of the second pull-down component pulling the pull rod plus the weight of the swing rod itself; when replacing the D-type detection head, the lifting mechanism starts to drive the lifting seat on the slider to do lifting movement. During the downward movement of the lifting seat, it first bypasses the fourth photoelectric switch from the bottom to the top. The pull rod first pulls the second pull-down component to move a distance, and then pulls the first pull-down component to move a distance until the shading sheet is directly opposite to the fourth photoelectric switch from the bottom to the top. At this time, the pressure on the support is the pressure of the second pull-down component and the first pull-down component pulling the pull rod plus the weight of the swing rod itself. After the reading is stable, the hardness value can be measured. The gravity of the pendulum rod, the pulling force of the second pull-down component on the pull rod, and the pulling force composed of the second pull-down component and the first pull-down component together present two other measuring pressures; in the process of pressing down, a plurality of photoelectric sensors are arranged through the corresponding pressure points to control the pressure of the pendulum rod pressed against the supporting member, so as to realize the switching of three types of hardness testers, namely, type A, type D and type OO, which is more convenient to use, reduces the purchase cost of the measuring equipment and reduces the space occupied by the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 This is the internal structure diagram of the lifting seat of the OO type hardness tester in the measuring state;

[0015] Figure 3 This is the internal structure diagram of the lifting seat of the A-type hardness tester in the measuring state;

[0016] Figure 4 This is the internal structure diagram of the lifting seat of the D-type hardness tester in the measuring state;

[0017] Figure 5 is a schematic diagram of the structure of the first pull-down component;

[0018] Figure 6 is a schematic diagram of the structure of the second pull-down component;

[0019] Description of reference numerals:

[0020] 1. Detection head; 2. Touch control screen; 3. Lifting seat; 4. Swing rod; 5. Photoelectric switch fixing seat;

[0021] 501, photoelectric switch; 6, screw rod; 7, column; 8, slider; 9, motor; 10, base;

[0022] 11. Testing table; 12. Probe fixing seat; 13. Supporting member; 14. Shading sheet;

[0023] 15. first pull-down assembly; 1501. high blocking portion; 16. pull-down assembly; 1601. low blocking portion;

[0024] 17. Pull rod; A. workpiece. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6As shown, an electric Shore hardness tester described in the present invention comprises a base 10 and a column 7 fixed on the base 10; a lifting mechanism is arranged on the column 7; a lifting seat 3 is arranged on the lifting mechanism; a probe fixing seat 12 is slidably connected to the lifting seat 3; a detection head 1 is fixed on the probe fixing seat 12; a photoelectric switch fixing seat 5 is fixed on the lifting seat 3; a plurality of photoelectric switches 501 are arranged in sequence along the height direction on the photoelectric switch fixing seat 5; a swing rod 4, a first pull-down assembly 15 and a second pull-down assembly 16 are hinged on the lifting seat 3; a light shielding sheet 14 and a pull rod 17 are fixed at the end of the swing rod 4; a high blocking portion 1501 is arranged at the end of the first pull-down assembly 15; A short blocking portion 1601 is provided at the end of the second pull-down assembly 16; the short blocking portion 1601 and the high blocking portion 1501 are sequentially arranged on the path of the pull rod 17 moving upward; a support member 13 is fixed on the probe fixing seat 12; the rod body of the swing rod 4 is pressed tightly on the support member 13; a detection table 11 for placing the workpiece A is provided directly below the detection head 1; the photoelectric switches 501 are all arranged on the movement path of the shading sheet 14; after the lifting mechanism is started, it can drive the lifting seat 3 on the slider 8 to perform lifting movement, and during the downward movement of the lifting seat 3, the detection head 1 is first pressed down onto the surface of the workpiece, and then the lifting seat 3 continues to descend, so the detection head 1 slides upward relative to the lifting seat 3, and the support member 13 on the probe fixing seat 12 pushes The swing rod 4 swings upward, and when the shading sheet 14 moves to the photoelectric switch 501 on the upper initial position (that is, the second photoelectric switch 501 from the bottom), the swing rod 4 exerts a pressure on the support 13 due to its own gravity, and the gravity of the probe fixing seat 12, and the pressure applied to the detection head 1 is the pressure required by the OO type hardness tester. At this time, it is an OO type hardness tester. After the reading is stable, the hardness value can be measured; when the A type detection head 1 is replaced, the lifting mechanism starts to drive the lifting seat 3 on the slider 8 to do lifting movement. During the downward movement of the lifting seat 3, it first bypasses the third photoelectric switch 501 from the bottom to the top, and the pull rod 17 pulls the second pull-down assembly 16, so the second pull-down assembly 16 applies a pulling force to the pull rod 17. When the D-type detection head 1 is replaced, the lifting mechanism starts to drive the lifting seat 3 on the slider 8 to do lifting movement. During the downward movement of the lifting seat 3, it first bypasses the fourth photoelectric switch 501 from the bottom to the top. The pull rod 17 first pulls the second pull-down component 16 to move a distance, and then pulls the first pull-down component 15 to move a distance until the shading sheet 14 is directly opposite to the fourth photoelectric switch 501 from the bottom to the top. At this time, the pressure on the support member 13 is the pressure of the pulling force of the second pull-down component 16 and the first pull-down component 15 on the pull rod 17 plus the weight of the pendulum 4. After the reading is stable, the hardness value can be measured.The gravity of the pendulum rod 4, the pulling force of the second pull-down component 16 on the pull rod 17, and the pulling force composed of the second pull-down component 16 and the first pull-down component 15 together present two other measuring pressures; in the process of pressing down, a plurality of photoelectric sensors 501 are set through the corresponding pressure points to control the pressure of the pendulum rod 4 pressed against the support member 13, so as to realize the switching of three types of hardness testers of type A, type D and type OO, which is more convenient to use, reduces the purchase cost of the measuring equipment and reduces the space occupied by the equipment.

[0027] As a preferred embodiment of the present invention, the support member 13 is a roller; the rod body of the swing rod 4 is pressed tightly against the wheel body of the roller; the roller and the swing rod 4 are in rolling contact to reduce resistance and noise.

[0028] As a preferred embodiment of the present invention, the lifting mechanism includes a screw rod 6, a slider 8 and a motor 9; one end of the motor 9 is fixed on the column 7; the other end of the motor 9 is fixedly connected to the screw rod 6; the screw rod 6 is rotatably connected to the column 7; the slider 8 is slidably connected to the column 7; the screw rod 6 is threadedly connected to the slider 8; the lifting seat 3 is fixed on the slider 8; after the motor 9 is started, the screw rod 6 is driven to rotate, so that the lifting seat 3 and the slider 8 perform lifting and lowering movements on the column 7.

[0029] As a preferred embodiment of the present invention, the high blocking portion 1501 and the short blocking portion 1601 are both in an "n" shape with the opening facing the center; the high blocking portion 1501 and the short blocking portion 1601 are both sleeved on the rod body of the pull rod 17; the structure of the high blocking portion 1501 and the short blocking portion 1601 adopts a bent "n" shape structure, which is simple to process and convenient to connect with the pull rod 17, and the pull rod 17 is not easy to derail from the blocking portion of the "n" shape structure.

[0030] As a preferred embodiment of the present invention, both the first pull-down component 15 and the second pull-down component 16 are springs; the springs are easy to install, and the elastic force of the springs has a linear relationship with the stretched length, which simplifies the calculation of the hardness tester during design; the position of the photoelectric switch 501 is set according to the stretched length of the two springs at the corresponding position, which is set before the equipment is produced and does not need to be set after leaving the factory.

[0031] As a preferred embodiment of the present invention, a touch control screen 2 is fixed on the lifting seat 3; the touch control screen 2 controls the entire hardness tester.

[0032] When the present invention is used, a testing table for placing workpiece A is provided directly below the testing head; the photoelectric switches are all provided on the movement path of the shading sheet; after the motor is started, the screw rod is driven to rotate, so that the lifting seat and the slider perform lifting and lowering movements on the column. During the downward movement of the lifting seat, the testing head is first pressed down onto the surface of the workpiece, and then the lifting seat continues to descend, so the testing head slides upward relative to the lifting seat, and the roller on the probe fixing seat pushes the swing rod to swing upward. When the shading sheet moves to the upper initial position and a photoelectric switch is applied, the pressure applied to the testing head by the swing rod due to its own gravity and the gravity of the probe fixing seat is the pressure required by the OO type hardness tester. At this time, it is a OO type hardness tester, and the hardness value can be measured after the reading is stable; after the A type testing head is replaced, the screw rod is driven to rotate after the motor is started, so that the lifting seat and the slider perform lifting and lowering movements on the column. When the D-type detection head is replaced, the motor is started to drive the screw rod to rotate, so that the lifting seat and the slider can perform lifting and lowering movements on the column. During the downward movement of the lifting seat, the fourth photoelectric switch from the bottom to the top is first bypassed. The pull rod first pulls the second pull-down component to move a distance, and then pulls the first pull-down component to move a distance until the shading sheet is directly opposite to the fourth photoelectric switch from the bottom to the top. At this time, the pressure on the roller is the pressure of the second pull-down component and the first pull-down component on the pull rod plus the weight of the pendulum rod. After the reading is stable, the hardness value can be measured. The gravity of the swing rod and the pulling force of the second pull-down component on the pull rod and the pulling force composed of the second pull-down component plus the first pull-down component together form two other measuring pressures; in the process of pressing down, multiple photoelectric sensors are set through the corresponding pressure points to control the pressure of the swing rod pressed against the roller, so as to realize the switching of three types of hardness testers of type A, type D and type OO, which is more convenient to use, reduces the purchase cost of the measuring equipment and reduces the space occupied by the equipment; the spring is easy to install, and the elastic force of the spring has a linear relationship with the stretching length, which simplifies the calculation of the hardness tester during design; the position of the photoelectric switch is set according to the stretched length of the two springs at the corresponding position, which is set before the equipment is produced and does not need to be set after leaving the factory; the structure of the high blocking part and the short blocking part adopts a bent "n" shape structure, which is simple to process and convenient to connect with the pull rod, and the pull rod is not easy to derail from the blocking part of the "n" shape structure.

[0033] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. An electric Shore hardness tester, characterized in that: The invention comprises a base (10) and a column (7) fixed on the base (10); a lifting mechanism is arranged on the column (7); a lifting seat (3) is arranged on the lifting mechanism; a probe fixing seat (12) is slidably connected to the lifting seat (3); a detection head (1) is fixed on the probe fixing seat (12); a photoelectric switch fixing seat (5) is fixed on the lifting seat (3); a plurality of photoelectric switches (501) are arranged in sequence along the height direction on the photoelectric switch fixing seat (5); a swing rod (4) and a first pull-down assembly are hinged on the lifting seat (3); (15) and a second pull-down assembly (16); a light shielding sheet (14) and a pull rod (17) are fixed to the end of the swing rod (4); a high blocking portion (1501) is provided at the end of the first pull-down assembly (15); a low blocking portion (1601) is provided at the end of the second pull-down assembly (16); the low blocking portion (1601) and the high blocking portion (1501) are sequentially arranged on the path of the pull rod (17) moving upward; a support member (13) is fixed to the probe fixing seat (12); the rod body of the swing rod (4) is pressed against the support member (13); The high blocking portion (1501) and the low blocking portion (1601) are both in an "n" shape with the opening facing the other side; the high blocking portion (1501) and the low blocking portion (1601) are both sleeved on the rod body of the pull rod (17).

2. The electric Shore hardness tester according to claim 1, characterized in that: The support member (13) is a roller; the shaft of the swing rod (4) is pressed tightly against the wheel body of the roller.

3. The electric Shore hardness tester according to claim 1, characterized in that: The lifting mechanism comprises a screw rod (6), a slider (8) and a motor (9); one end of the motor (9) is fixed on the column (7); the other end of the motor (9) is fixedly connected to the screw rod (6); the screw rod (6) is rotatably connected to the column (7); the slider (8) is slidably connected to the column (7); the screw rod (6) is threadedly connected to the slider (8); and the lifting seat (3) is fixed on the slider (8).

4. The electric Shore hardness tester according to claim 1, characterized in that: The first pull-down component (15) and the second pull-down component (16) are both springs.

5. The electric Shore hardness tester according to claim 1, characterized in that: A touch control screen (2) is fixed on the lifting seat (3).

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