Pencil lead tip stress testing mechanism

Abstract

The utility model relates to the technical field of pencil lead nib stress testing, in particular to a pencil lead nib stress testing mechanism which comprises a detection table body, a connecting frame is arranged at the top of the detection table body, a first guide rail is arranged on the outer side of the connecting frame, and a second guide rail is arranged on the outer side of the first guide rail. A moving seat is arranged on the outer side of the second guide rail, a moving block is arranged on the outer side of the moving seat, two sets of clamping rings are arranged at the end, away from the moving seat, of the moving block, the two sets of clamping rings are connected through a connecting assembly, and a swing assembly is arranged in the moving block; the connecting assembly is used for rapidly connecting the two groups of clamping rings, the connecting assembly is composed of a connecting block, a clamping block and a limiting block, the connecting block is located on the outer side of the clamping ring, and compared with an existing testing mechanism, the overall practicability of the testing mechanism can be improved through the design.

Description

Technical Field

[0001] This utility model relates to the field of force testing technology for pencil tips, and specifically to a force testing mechanism for pencil tips. Background Technology

[0002] Pencil hardness, also known as coating hardness, is a test method and measurement system for calibrating the hardness of pencil coatings. According to industrial standards, pencil lead hardness is divided into 13 grades. From the hardest 6H, the grades decrease progressively through 5H, 4H, 3H, 2H, and H, then through the moderately hard HB, and finally from B and 2B to the softest 6B. Here, H represents hardness, and B represents darkness. From 6H to 6B, the hardness decreases, and the pencil color becomes progressively darker. The darkness of the color is related to the graphite content; the darker the color, the higher the graphite content, and the softer the pencil.

[0003] Existing technology discloses a device for testing the hardness of pencil lead. The pencil testing device is fixed to the lead sleeve with bolts, which is inconvenient to disassemble and also inconvenient to place the pencil lead. Therefore, it is particularly important to improve the existing testing mechanism and design a new type of pencil lead tip force testing mechanism to solve the above-mentioned technical defects and improve the practicality of the overall testing mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide a pencil tip force testing mechanism. The pencil lead is placed between two sets of clamping rings, which are then closed. A limiting block is connected to two sets of limiting grooves, allowing the two sets of limiting grooves to mutually limit each other. This, in turn, allows the two sets of connecting blocks to mutually limit each other, enabling the two sets of clamping rings to close. When the two sets of clamping rings are mutually limiting, the locking block can move into the inside of the locking groove. This allows the two sets of clamping rings to mutually limit each other through multiple sets of locking blocks and locking grooves, further increasing the stability of the connection, preventing loosening, and limiting and clamping the pencil lead inside. This makes disassembly and placement of the pencil lead easier, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A force testing mechanism for lead pencil tips includes a testing platform body. The top of the testing platform body is provided with a connecting frame. The outer side of the connecting frame is provided with a first guide rail. The outer side of the first guide rail is provided with a second guide rail. The outer side of the second guide rail is provided with a movable seat. The outer side of the movable seat is provided with a movable block. The end of the movable block away from the movable seat is provided with two sets of clamping rings. The two sets of clamping rings are connected by a connecting component. The movable block is provided with a swing component inside.

[0007] The connecting component is used to quickly connect two sets of clamping rings, and the connecting component consists of a connecting block, a snap-fit ​​block and a limiting block. The connecting block is located on the outside of the clamping ring, multiple sets of snap-fit ​​blocks are located on the outside of the connecting block, and the limiting block is located between the two sets of connecting blocks.

[0008] The swing assembly is used to drive the clamping ring to swing.

[0009] As a preferred embodiment of this utility model, the two sets of clamping rings are rotatably connected to each other, and the moving block is provided with a rotating shaft at one end near the clamping ring, and the moving block is connected to the clamping ring through the rotating shaft.

[0010] As a preferred embodiment of this utility model, each of the two sets of connecting blocks has a limiting groove at one end that is close to the other, and the two sets of limiting grooves are connected by limiting blocks. The external structural size of the limiting blocks is designed to correspond to the internal structural size of the limiting grooves.

[0011] As a preferred embodiment of this utility model, multiple sets of snap-fit ​​grooves are provided on the outer side of the connecting block and on the outer side of the snap-fit ​​block, and the internal structure size of the snap-fit ​​groove is designed to correspond to the external structure size of the snap-fit ​​block.

[0012] As a preferred embodiment of this utility model, the swing assembly consists of a rotating disk, a rotating rod, a guide rod, a guide groove, and a rotating column. The rotating disk is rotatably connected to the interior of the moving block, the rotating rod is rotatably connected to the interior of the moving block at one end away from the rotating disk, the guide rod is fixedly connected to the outside of the rotating disk, the guide groove is opened inside the rotating rod at one end close to the rotating disk, and the rotating column is fixedly connected to the outside of the rotating rod and extends to the outside of the moving block.

[0013] As a preferred embodiment of this utility model, the external structural size of the guide rod is designed to correspond to the internal structural size of the guide groove, and the rotating rod is connected to the guide rod through the guide groove.

[0014] In a preferred embodiment of this utility model, the end of the rotating column away from the rotating rod is connected to the clamping ring, the drive end of the drive motor is fixedly connected inside the rotating disk, the moving seat is connected to the moving block through the drive screw, and the drive end of the servo motor is fixedly connected to the outside of the drive screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, through the design of the connecting component, the pencil lead is placed between two sets of clamping rings, the two sets of clamping rings are closed, and the limiting block is connected to the two sets of limiting grooves, so that the two sets of limiting grooves can be mutually limited and connected, thereby allowing the two sets of connecting blocks to be mutually limited and connected, and thus allowing the two sets of clamping rings to be closed. When the two sets of clamping rings are mutually limited and connected, the snap-fit ​​block can be moved into the inside of the snap-fit ​​groove, so that the two sets of clamping rings are mutually limited and connected through multiple sets of snap-fit ​​blocks and snap-fit ​​grooves, further increasing the stability of the connection, preventing loosening, and limiting and clamping the pencil lead inside, making disassembly more convenient and facilitating the placement of the pencil lead.

[0017] 2. In this utility model, through the design of the swing component, when testing the pencil lead, the swing component drives the clamping ring to swing, which in turn drives the pencil lead inside the two sets of clamping rings to swing, achieving precise control of 45° and stroke, which can improve the accuracy of pencil hardness testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the movable seat structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the swing component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping ring structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting component structure of this utility model.

[0023] In the diagram: 1. Main body of the testing table; 2. Connecting frame; 3. First guide rail; 4. Second guide rail; 5. Movable seat; 6. Movable block; 7. Clamping ring; 8. Connecting assembly; 9. Swinging assembly; 10. Connecting block; 11. Snap-fit ​​block; 12. Limiting block; 13. Limiting groove; 14. Rotating disk; 15. Rotating rod; 16. Guide rod; 17. Guide groove; 18. Rotating column. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Please see Figures 1-5 This utility model provides a technical solution:

[0027] A force testing mechanism for lead pencil tips includes a testing platform body 1, a connecting frame 2 on the top of the testing platform body 1, a first guide rail 3 on the outer side of the connecting frame 2, a second guide rail 4 on the outer side of the first guide rail 3, a movable seat 5 on the outer side of the second guide rail 4, a movable block 6 on the outer side of the movable seat 5, two sets of clamping rings 7 on the end of the movable block 6 away from the movable seat 5, the two sets of clamping rings 7 being connected by a connecting component 8, and a swing component 9 inside the movable block 6.

[0028] The connecting component 8 is used to quickly connect two sets of clamping rings 7. The connecting component 8 consists of a connecting block 10, a snap-fit ​​block 11 and a limiting block 12. The connecting block 10 is located on the outside of the clamping ring 7, multiple snap-fit ​​blocks 11 are located on the outside of the connecting block 10, and the limiting block 12 is located between the two sets of connecting blocks 10.

[0029] The swing assembly 9 is used to drive the clamping ring 7 to swing.

[0030] Furthermore, the two sets of clamping rings 7 are rotatably connected to each other. The moving block 6 has a rotating shaft at one end near the clamping ring 7, and the moving block 6 is connected to the clamping ring 7 through the rotating shaft. The two sets of clamping rings 7 are rotatably connected to each other, and the pencil lead can be clamped by the two sets of clamping rings 7. The clamping ring 7 is connected to the rotating shaft, so that the clamping ring 7 can be connected to the moving block 6.

[0031] In this design, each of the two sets of connecting blocks 10 has a limiting groove 13 at one end that is close to each other. The two sets of limiting grooves 13 are connected by limiting blocks 12. The external size of the limiting blocks 12 is designed to correspond to the internal size of the limiting grooves 13. By connecting the limiting blocks 12 to the two sets of limiting grooves 13, the two sets of limiting grooves 13 can be mutually limited and connected, thereby allowing the two sets of connecting blocks 10 to be mutually limited and connected. This allows the two sets of clamping rings 7 to be closed, limiting and clamping the pencil lead inside, making disassembly more convenient and facilitating the placement of the pencil lead.

[0032] Secondly, multiple sets of snap-fit ​​grooves are provided on the outer side of the connecting block 10 and on the outer side of the snap-fit ​​block 11. The internal structure size of the snap-fit ​​groove is designed to correspond to the external structure size of the snap-fit ​​block 11. When the two sets of clamping rings 7 are mutually limited and connected, the snap-fit ​​block 11 can be moved into the inside of the snap-fit ​​groove, so that the two sets of clamping rings 7 are mutually limited and connected through multiple sets of snap-fit ​​blocks 11 and snap-fit ​​grooves, further increasing the stability of the connection and preventing loosening.

[0033] Furthermore, the swing assembly 9 consists of a rotating disk 14, a rotating rod 15, a guide rod 16, a guide groove 17, and a rotating column 18. The rotating disk 14 is rotatably connected to the inside of the moving block 6. The rotating rod 15 is rotatably connected to the inside of the moving block 6 at one end away from the rotating disk 14. The guide rod 16 is fixedly connected to the outside of the rotating disk 14. The guide groove 17 is opened inside the rotating rod 15 at one end close to the rotating disk 14. The rotating column 18 is fixedly connected to the outside of the rotating rod 15 and extends to the outside of the moving block 6. When testing the pencil lead, the swing assembly 9 drives the clamping rings 7 to swing, which in turn drives the pencil leads inside the two sets of clamping rings 7 to swing, achieving precise control of 45° and stroke, which can improve the accuracy of pencil hardness testing.

[0034] Furthermore, the external structural size of the guide rod 16 is designed to correspond to the internal structural size of the guide groove 17. The rotating rod 15 is connected to the guide rod 16 through the guide groove 17, thereby connecting the guide groove 17 and the guide rod 16, so that the rotating rod 15 can be connected to the rotating disk 14.

[0035] Furthermore, the end of the rotating column 18 furthest from the rotating rod 15 is connected to the clamping ring 7. The drive end of the drive motor is fixedly connected inside the rotating disk 14. The moving seat 5 is connected to the moving block 6 through the drive screw. The drive end of the servo motor is fixedly connected to the outside of the drive screw. When the drive motor is started, the rotating disk 14 is rotated, causing the guide rod 16 to move. The guide groove 17 causes the rotating rod 15 to swing, causing the rotating column 18 to move, which in turn causes the clamping ring 7 connected to it to swing. When the servo motor is started, the drive screw is rotated, causing the moving block 6 to move, which in turn causes the clamping ring 7 to move, bringing the pencil lead into contact with the main body 1 of the testing platform for force testing of the pencil tip.

[0036] In this embodiment, the specific implementation scenario is as follows: In actual use, the pencil lead is placed between two sets of clamping rings 7, the two sets of clamping rings 7 are closed, and the limiting block 12 is connected to the two sets of limiting grooves 13, so that the two sets of limiting grooves 13 can be mutually limited and connected, thereby allowing the two sets of connecting blocks 10 to be mutually limited and connected, thus allowing the two sets of clamping rings 7 to close. When the two sets of clamping rings 7 are mutually limited and connected, the snap-fit ​​block 11 can be moved into the inside of the snap-fit ​​groove, so that the two sets of clamping rings 7 are mutually limited and connected through multiple sets of snap-fit ​​blocks 11 and snap-fit ​​grooves, further increasing the stability of the connection, preventing loosening, and limiting and clamping the pencil lead inside, making disassembly more convenient and facilitating the placement of the pencil lead. The first guide rail 3 drives the second guide rail 4 to move, causing the movable seat 5 to move. The servo motor is started, driving the drive screw to rotate, causing the movable block 6 to move, which in turn causes the clamping ring 7 to move, bringing the pencil lead into contact with the main body 1 of the testing platform. The drive motor is then started, driving the rotating disk 14 to rotate, causing the guide rod 16 to move. Through the guide groove 17, the rotating rod 15 swings, causing the rotating column 18 to move, which in turn causes the clamping ring 7 connected to it to swing. This causes the pencil lead inside the two sets of clamping rings 7 to swing, achieving precise control of 45° and stroke. This improves the accuracy of pencil hardness testing. Compared with existing testing mechanisms, this utility model improves the overall practicality of the testing mechanism through its design.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A force testing mechanism for pencil tip, comprising a testing platform body (1), characterized in that: The top of the main body (1) of the testing platform is provided with a connecting frame (2), the outer side of the connecting frame (2) is provided with a first guide rail (3), the outer side of the first guide rail (3) is provided with a second guide rail (4), the outer side of the second guide rail (4) is provided with a moving seat (5), the outer side of the moving seat (5) is provided with a moving block (6), the end of the moving block (6) away from the moving seat (5) is provided with two sets of clamping rings (7), the two sets of clamping rings (7) are connected by a connecting component (8), and the inside of the moving block (6) is provided with a swing component (9); The connecting component (8) is used to quickly connect two sets of clamping rings (7), and the connecting component (8) consists of a connecting block (10), a snap-fit ​​block (11) and a limiting block (12). The connecting block (10) is located outside the clamping ring (7), and multiple sets of snap-fit ​​blocks (11) are located outside the connecting block (10). The limiting block (12) is located between the two sets of connecting blocks (10). The swing assembly (9) is used to drive the clamping ring (7) to swing.

2. The force testing mechanism for a pencil tip according to claim 1, characterized in that: The two sets of clamping rings (7) are rotatably connected to each other. The moving block (6) is provided with a rotating shaft at one end near the clamping ring (7), and the moving block (6) is connected to the clamping ring (7) through the rotating shaft.

3. The force testing mechanism for a pencil tip according to claim 1, characterized in that: Each of the two sets of connecting blocks (10) has a limiting groove (13) at one end that is close to each other. The two sets of limiting grooves (13) are connected by a limiting block (12). The external size of the limiting block (12) is designed to correspond to the internal size of the limiting groove (13).

4. The force testing mechanism for a pencil tip according to claim 1, characterized in that: Multiple sets of snap-fit ​​grooves are provided on the outside of the connecting block (10) and on the outside of the snap-fit ​​block (11). The internal structure size of the snap-fit ​​groove is designed to correspond to the external structure size of the snap-fit ​​block (11).

5. The force testing mechanism for a pencil tip according to claim 1, characterized in that: The swing assembly (9) consists of a rotating disk (14), a rotating rod (15), a guide rod (16), a guide groove (17), and a rotating column (18). The rotating disk (14) is rotatably connected to the inside of the moving block (6). The rotating rod (15) is rotatably connected to the inside of the moving block (6) and is located away from the rotating disk (14). The guide rod (16) is fixedly connected to the outside of the rotating disk (14). The guide groove (17) is opened inside the rotating rod (15) and is located near the end of the rotating disk (14). The rotating column (18) is fixedly connected to the outside of the rotating rod (15) and extends to the outside of the moving block (6).

6. The force testing mechanism for a pencil tip according to claim 5, characterized in that: The external structure size of the guide rod (16) is designed to correspond to the internal structure size of the guide groove (17), and the rotating rod (15) is connected to the guide rod (16) through the guide groove (17).

7. The force testing mechanism for a pencil tip according to claim 6, characterized in that: The end of the rotating column (18) away from the rotating rod (15) is connected to the clamping ring (7). The drive end of the drive motor is fixedly connected inside the rotating disk (14). The moving seat (5) is connected to the moving block (6) through the drive screw. The drive end of the servo motor is fixedly connected to the outside of the drive screw.

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