Nail clipper opening and closing force tester

Abstract

The utility model relates to the field of nail clipper opening and closing force testing, in particular to a nail clipper opening and closing force tester. The device comprises a portal frame, a base is arranged at the bottom of the portal frame, a mounting seat is arranged on the base, a servo motor is arranged in the mounting seat, a reciprocating lead screw is arranged at the output end of the servo motor, a limiting assembly is arranged at the top end of the mounting seat, a positioning cylinder is arranged in the limiting assembly, and a wedge block is connected to the positioning cylinder in a sleeving mode. The positioning cylinder is used for adjusting the height of the wedge block; wherein clamping assemblies are symmetrically arranged on the two sides of the limiting assembly, ejector rods are slidably connected to the positions, located at the bottom ends of the clamping assemblies, of the two sides of the limiting assembly, and the wedge blocks drive the clamping assemblies to clamp the nail clippers by jacking the ejector rods.

Description

Technical Field

[0001] This utility model relates to the field of nail clipper opening and closing force testing technology, specifically, to a nail clipper opening and closing force testing instrument. Background Technology

[0002] Nail clippers are a common personal care tool, primarily used for trimming nails (fingernails or toenails) and removing dead skin and hangnails.

[0003] Nail clippers undergo inspection during manufacturing, including an opening and closing force test, to ensure they meet product and national standards. However, most nail clipper opening and closing force tests require manual inspection by pressing the clippers directly, which is relatively inefficient.

[0004] Therefore, there is an urgent need to provide a nail clipper opening and closing force tester to solve the above problems. Utility Model Content

[0005] This utility model provides the following technical solution: a nail clipper opening and closing force tester, including a gantry frame, a base at the bottom of the gantry frame, a mounting seat on the base, a servo motor inside the mounting seat, a reciprocating lead screw at the output end of the servo motor, a limit component at the top of the mounting seat, a positioning cylinder inside the limit component, and a wedge block sleeved on the positioning cylinder, the positioning cylinder being used to adjust the height of the wedge block.

[0006] The limiting component is symmetrically provided with clamping components on both sides, and top rods are slidably connected to the bottom of the clamping components on both sides of the limiting component. The wedge blocks drive the clamping components to clamp the nail clippers by lifting the top rods.

[0007] As a further improvement to this technical solution, a test strip is installed on the gantry frame directly above the center of the mounting base. The clamping assembly clamps the nail clippers so that they bite the test strip to test the opening and closing force of the nail clippers.

[0008] As a further improvement to this technical solution, the limiting component includes a limiting box fixedly installed on the top of the mounting base. A sliding plate is slidably connected inside the limiting box. Several balls are symmetrically rotatably connected around the sliding plate, and the balls are in contact with the inner wall of the limiting box to reduce friction. The sliding plate is threadedly connected to the reciprocating lead screw, and both the limiting box and the sliding plate are rectangular structures.

[0009] As a further improvement to this technical solution, the outer wall of the positioning cylinder is provided with fine threads, the positioning cylinder is fixedly connected to the top of the slide plate, and the positioning cylinder is slidably connected to the reciprocating lead screw.

[0010] The wedge is threaded onto the positioning cylinder and slidably connected to the reciprocating lead screw. The wedge has a symmetrical wedge-shaped structure on both sides.

[0011] As a further improvement to this technical solution, the clamping assembly includes mounting blocks, which are symmetrically and fixedly installed on one side of the limiting box. Mounting rods are fixedly connected between the mounting blocks, and clamping arms are rotatably connected to the mounting rods. A torsion spring is provided at the connection between the clamping arm and the mounting rod. One end of the torsion spring is fixedly connected to the mounting block, and the other end is fixedly connected to the clamping arm.

[0012] The clamping arm has an L-shaped structure and an anti-slip pad at the top.

[0013] The torsion spring always tends to rotate the tip of the clamping arm away from the wedge.

[0014] As a further improvement to this technical solution, the contact point between the top rod and the inclined surface of the wedge block is a smooth structure.

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

[0016] 1. This nail clipper opening and closing force tester uses a servo motor to drive a reciprocating lead screw to rotate, causing a slide plate to slide along the inner wall of the limiting box, thereby achieving vertical movement of the positioning cylinder and wedge. This mechanical transmission method is stable and precise, which is conducive to accurate control of the nail clipper clamping force and improves the accuracy and reliability of the test. Secondly, the fine threads on the outer wall of the positioning cylinder allow users to precisely adjust the height of the wedge, thereby achieving precise control of the push rod thrust and clamping force. This adjustable design enhances the flexibility and adaptability of the tester, meeting the testing needs of nail clippers of different specifications and models.

[0017] 2. This nail clipper opening and closing force tester uses a wedge block to push up a top rod through its wedge-shaped structure, thereby driving the clamping arm to rotate and clamp the nail clipper. It cleverly utilizes the lever principle and realizes the transmission and adjustment of clamping force through a simple mechanical structure, which is convenient for flexibly adjusting the clamping force under different testing requirements. Secondly, through the torsion spring set between the clamping arm and the mounting rod, the clamping arm can be automatically reset and the nail clipper can be released when the wedge block's thrust disappears. This design simplifies the testing process and improves testing efficiency. 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 front view of the cross-sectional structure of the wedge block of this utility model;

[0020] Figure 3This is a schematic diagram of the clamping assembly of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the limiting component of this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Gantry frame; 2. Base; 3. Mounting base; 4. Limiting assembly; 5. Test strip; 6. Clamping assembly; 7. Reciprocating lead screw; 8. Positioning cylinder; 9. Wedge block; 10. Top rod; 11. Servo motor;

[0024] 41. Limiting box; 42. Slide plate; 43. Ball bearing;

[0025] 61. Mounting block; 62. Mounting rod; 63. Clamping arm; 64. Torsion spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0029] Please see Figures 1-4As shown, the purpose of this embodiment is to provide a nail clipper opening and closing force tester, including a gantry frame 1, a base 2 at the bottom of the gantry frame 1, a mounting seat 3 on the base 2, a servo motor 11 inside the mounting seat 3, a reciprocating lead screw 7 at the output end of the servo motor 11, a limit component 4 at the top of the mounting seat 3, a positioning cylinder 8 inside the limit component 4, and a wedge 9 sleeved on the positioning cylinder 8, the positioning cylinder 8 being used to adjust the height of the wedge 9.

[0030] Furthermore, clamping components 6 are symmetrically arranged on both sides of the limiting component 4, and top rods 10 are slidably connected to the bottom of the clamping components 6 on both sides of the limiting component 4. The wedge block 9 drives the clamping components 6 to clamp the nail clippers by lifting the top rods 10.

[0031] Furthermore, a test strip 5 is installed on the gantry 1 directly above the center of the mounting base 3. The clamping component 6 clamps the nail clipper to make it bite the test strip 5, which is used to test the opening and closing force of the nail clipper. It is worth mentioning that the test strip 5 is used to test the biting force of the nail clipper. Under the predetermined clamping force of the clamping component 6, it is tested whether the nail clipper can break the test strip 5. Therefore, the material of the test strip 5 can be similar to that of a fingernail. Alternatively, the test strip 5 can be replaced by a pressure strip that tests the pressure value. In this way, under the predetermined clamping force of the clamping component 6, it is seen whether the nail clipper can achieve the predetermined biting force. The specific choice depends on cost and production requirements.

[0032] Specifically, the limiting component 4 includes a limiting box 41 fixedly installed on the top of the mounting base 3. A sliding plate 42 is slidably connected inside the limiting box 41. Several balls 43 are symmetrically rotatably connected around the sliding plate 42 to reduce friction. The sliding plate 42 is threadedly connected to the reciprocating screw 7. It is worth mentioning that the balls 43 are in contact with the inner wall of the limiting box 41, and both the limiting box 41 and the sliding plate 42 are rectangular structures. Thus, under the drive of the reciprocating screw 7, the sliding plate 42 cannot rotate because both the limiting box 41 and the sliding plate 42 are rectangular structures. It can only slide upward along the inner wall of the limiting box 41.

[0033] Furthermore, the outer wall of the positioning cylinder 8 is provided with fine threads, the positioning cylinder 8 is fixedly connected to the top of the slide plate 42, and the positioning cylinder 8 is slidably connected to the reciprocating screw 7;

[0034] The wedge 9 is threaded onto the positioning cylinder 8 and slidably connected to the reciprocating screw 7. The two sides of the wedge 9 are symmetrically wedge-shaped, so the height of the wedge 9 can be adjusted by rotating it on the positioning cylinder 8. Since the outer periphery of the positioning cylinder 8 is finely threaded, it can meet the requirement of adjusting the height of the wedge 9 and thus adjusting the length of the lifting rod 10, thereby further realizing the fine adjustment of the clamping force of the clamping assembly 6.

[0035] In addition, the clamping assembly 6 includes mounting blocks 61, which are symmetrically and fixedly mounted on one side of the limiting box 41. Mounting rods 62 are fixedly connected between the mounting blocks 61. Clamping arms 63 are rotatably connected to the mounting rods 62. A torsion spring 64 is provided at the connection between the clamping arm 63 and the mounting rod 62. One end of the torsion spring 64 is fixedly connected to the mounting block 61, and the other end is fixedly connected to the clamping arm 63.

[0036] The clamping arm 63 has an L-shaped structure and an anti-slip pad at the top.

[0037] The torsion spring 64 always tends to rotate the tip of the clamping arm 63 away from the wedge block 9.

[0038] In addition, the contact between the top rod 10 and the inclined surface of the wedge block 9 is a smooth structure.

[0039] The specific working principle is as follows:

[0040] In actual operation: The servo motor 11 is started, and its rotation drives the reciprocating screw 7 to rotate, which in turn causes the slide plate 42 to slide along the inner wall of the limit box 41, driving the positioning cylinder 8 to move upward, which in turn drives the wedge block 9 to move upward. Due to the wedge-shaped structure of the wedge block 9, the wedge block 9 pushes the push rod 10 upward, causing the push rod 10 to move away from the wedge block 9. Then, the other end of the push rod 10 pushes the bottom end of the clamping arm 63, causing the clamping arm 63 to rotate around the mounting rod 62. The top end of the clamping arm 63 can then clamp the fingernail. The pliers are used to make the trimming end of the nail clipper begin to bite. The trimming end of the nail clipper should be below the test strip 5 and the test strip 5 should be inside the trimming end. In this way, the nail clipper can bite the test strip 5. If the nail clipper bites through the test strip 5, it is considered qualified. During the process of the slide plate 42 moving up and down in the limit box 41, when the slide plate 42 moves down, it drives the wedge block 9 to move down, thereby reducing the pushing force on the top rod 10. Under the action of the torsion spring 64, the clamping arm 63 stops clamping and releases the nail clipper, so that the next nail clipper can be replaced.

[0041] In addition, according to the different nail clipper biting force test requirements, the wedge 9 can be rotated to adjust its height on the positioning cylinder 8. This will change the distance that pushes the top rod 10 to move outward. Furthermore, the angle at which the top rod 10 pushes the clamping arm 63 to rotate will change, thereby changing the clamping force of the nail clipper and ultimately adjusting the clamping force of the nail clipper.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nail clipper opening and closing force tester, characterized in that: The system includes a gantry frame (1), a base (2) at the bottom of the gantry frame (1), a mounting seat (3) on the base (2), a servo motor (11) inside the mounting seat (3), a reciprocating lead screw (7) at the output end of the servo motor (11), a limit assembly (4) at the top of the mounting seat (3), a positioning cylinder (8) inside the limit assembly (4), a wedge (9) sleeved on the positioning cylinder (8), and the positioning cylinder (8) is used to adjust the height of the wedge (9). The limiting component (4) is symmetrically provided with clamping components (6) on both sides. The limiting component (4) is slidably connected with a top rod (10) on both sides at the bottom of the clamping component (6). The wedge (9) drives the clamping component (6) to clamp the nail clippers by lifting the top rod (10).

2. The nail clipper opening and closing force tester according to claim 1, characterized in that: A test strip (5) is installed on the gantry (1) directly above the center of the mounting base (3). The clamping assembly (6) clamps the nail clippers so that they bite the test strip (5) to test the opening and closing force of the nail clippers.

3. The nail clipper opening and closing force tester according to claim 2, characterized in that: The limiting component (4) includes a limiting box (41) fixedly installed on the top of the mounting base (3). A sliding plate (42) is slidably connected inside the limiting box (41). Several balls (43) are symmetrically rotated around the sliding plate (42), and the balls (43) are in contact with the inner wall of the limiting box (41) to reduce friction. The sliding plate (42) is threadedly connected to the reciprocating lead screw (7), and both the limiting box (41) and the sliding plate (42) are rectangular structures.

4. The nail clipper opening and closing force tester according to claim 3, characterized in that: The outer wall of the positioning cylinder (8) is provided with fine threads. The positioning cylinder (8) is fixedly connected to the top of the slide plate (42), and the positioning cylinder (8) is slidably connected to the reciprocating screw (7). The wedge (9) is threadedly connected to the positioning cylinder (8) and slidably connected to the reciprocating screw (7). The wedge (9) has a wedge-shaped structure with symmetrical sides.

5. The nail clipper opening and closing force tester according to claim 3, characterized in that: The clamping assembly (6) includes mounting blocks (61), which are symmetrically and fixedly mounted on one side of the limiting box (41). Mounting rods (62) are fixedly connected between the mounting blocks (61). Clamping arms (63) are rotatably connected to the mounting rods (62). A torsion spring (64) is provided at the connection between the clamping arm (63) and the mounting rod (62). One end of the torsion spring (64) is fixedly connected to the mounting block (61), and the other end is fixedly connected to the clamping arm (63). The clamping arm (63) has an L-shaped structure and an anti-slip pad is provided at the top. The torsion spring (64) always tends to rotate the top of the clamping arm (63) away from the wedge (9).

6. The nail clipper opening and closing force tester according to claim 4, characterized in that: The contact area between the top rod (10) and the inclined surface of the wedge (9) is a smooth structure.

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