Tweezers for precision density balance
By designing precision density balance tweezers with zigzag shell plate and return spring structure, combining the limiter and anti-slip clamp end, the problem of difficulty in placement of sheet-shaped materials is solved, and the accuracy of density measurement and ease of operation are improved.
Patent Information
- Application Number
- CN202420062874.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-10
AI Technical Summary
During Archimedes' method of measuring solid density, it is difficult to put sheet-like materials into the hanging basket smoothly, resulting in the impact of measurement accuracy and requiring superb operating technology.
A precision density balance tweezers are designed, using a Z-shaped shell plate and a return spring structure, combined with the limiter and the anti-slip clamping end to achieve up and down clamping and rebound functions to avoid dropping and touching errors of the sample.
It improves the accuracy of material placement and measurement accuracy, simplifies the operation process, reduces errors, and achieves simple, accurate and fast density testing.
Smart Images
Figure CN222269957U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of physical experiment instruments, in particular to a pair of tweezers for a precision density balance. Background Art
[0002] In the process of measuring solid density by the Archimedean method, the shapes of the samples to be measured are block, irregular, amorphous, flake, etc. However, when the flake material is placed with tweezers in the traditional way, the material and the liquid surface present a certain angle. After the tweezers unload the force, the sample will float and collide with the basket or cup wall due to the buoyancy during the process of sinking to the basket, thus affecting the accuracy of the measurement. This requires the technicians to have superb operating skills.
[0003] How to enable technicians to smoothly clamp and place sheet materials has become a problem to be solved in the prior art. Utility Model Content
[0004] In order to solve the shortcoming that the material is difficult to be smoothly placed into the hanging basket during the density measurement of flake solid, a pair of tweezers for precision density balance is proposed.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A pair of tweezers for a precision density balance comprises a shell plate, wherein the shell plate comprises a first shell plate and a second shell plate, the first shell plate and the second shell plate are arranged in parallel, the first shell plate and the second shell plate are both Z-shaped, a reset spring is installed between one end of the first shell plate and one end of the second shell plate, a tweezer arm is connected between one end of the shell plate and the other end of the shell plate, and the other end of the shell plate is a clamping end.
[0007] Furthermore, a first tweezer arm is connected between one end of the first shell plate and the other end of the first shell plate, and a second tweezer arm is connected between one end of the second shell plate and the other end of the second shell plate.
[0008] Furthermore, a limiter is connected between the same side of the first tweezers arm and the second tweezers arm.
[0009] Furthermore, a finger hook portion is installed on a side of the second tweezers arm away from the first tweezers arm.
[0010] Furthermore, the distance between the first forceps arm and the second forceps arm is 5mm-10mm.
[0011] Furthermore, the other end of the first shell plate is a first clamping end, and the other end of the second shell plate is a second clamping end.
[0012] Furthermore, the first clamping end and the second clamping end are both subjected to anti-slip treatment.
[0013] Furthermore, the distance between the first clamping end and the second clamping end is 5 mm-10 mm.
[0014] Furthermore, the free length of the return spring is 5 mm-10 mm.
[0015] Furthermore, the angle between the forceps arm and the clamp end is 90°-120°.
[0016] Compared with the prior art, the utility model has the following beneficial technical effects:
[0017] The utility model provides a pair of tweezers for a precision density balance. A reset spring is installed between one end of a first shell plate and one end of a second shell plate, so that the tweezers for the precision density balance have an up and down rebound function and are flexible to use. Since the traditional left-right force clamping method is changed to up and down clamping, it is easy to put the sheet material smoothly into the hanging basket without touching other parts of the precision density balance. The utility model has the characteristics of being simple, accurate and fast, and solves the problem in the prior art of density testing that an operator cannot smoothly put in and take out the sheet material.
[0018] The utility model provides a pair of tweezers for a precision density balance. By using a limiter, the risk of a sample falling off due to left-right misalignment between an upper and lower shell is avoided, thereby completely reducing errors caused by the material drifting and touching a container wall or a hanging basket during placement, and improving measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0020] Figure 1 The utility model is a schematic diagram of the overall structure of the tweezers for precision density balance.
[0021] Figure 2 The utility model is a schematic diagram of using tweezers to clamp a sample for a precision density balance.
[0022] Among them, 1 is the first shell plate, 2 is the second shell plate, 3 is the return spring, 4 is the limiter, 5 is the finger hook part, 6 is the first tweezers arm, 7 is the second tweezers arm, 8 is the first clamping end, and 9 is the second clamping end. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0025] Example
[0026] See also Figure 1 and Figure 2 A pair of tweezers for a precision density balance comprises a shell plate, wherein the shell plate comprises a first shell plate 1 and a second shell plate 2, the first shell plate 1 and the second shell plate 2 are arranged in parallel, the first shell plate 1 and the second shell plate 2 are both Z-shaped, a reset spring 3 is installed between one end of the first shell plate 1 and one end of the second shell plate 2, a tweezer arm is connected between one end of the shell plate and the other end of the shell plate, and the other end of the shell plate is a clamping end.
[0027] A first tweezer arm 6 is connected between one end of the first shell plate 1 and the other end of the first shell plate 1 , and a second tweezer arm 7 is connected between one end of the second shell plate 2 and the other end of the second shell plate 2 .
[0028] A stopper 5 is connected between the same side of the first forceps arm 6 and the second forceps arm 7 .
[0029] The finger hook portion 4 is installed on a side of the second tweezer arm 7 away from the first tweezer arm 6 .
[0030] The distance between the first forceps arm 6 and the second forceps arm 7 is 5 mm-10 mm.
[0031] The other end of the first shell plate 1 is a first clamping end 8 , and the other end of the second shell plate 2 is a second clamping end 9 .
[0032] The first clamping end 8 and the second clamping end 9 are both subjected to anti-slip treatment.
[0033] The distance between the first clamping end 8 and the second clamping end 9 is 5 mm-10 mm.
[0034] The free length of the return spring 3 is 5 mm-10 mm.
[0035] The angle between the forceps arm and the clamp end is 90°-120°.
[0036] The working process of a pair of tweezers for a precision density balance: the palm is placed at one end of the shell, and the clamp end is first used to cut into the bottom of the sheet sample, and the fingers gently use force to cooperate with the palm to pinch one end of the shell to compress the reset spring 3. Optionally, the fingers cooperate with the palm to pinch one end of the shell at the finger hook part 4 to compress the reset spring 3, and clamp the sheet sample at the clamp end, thereby clamping the sheet sample. Optionally, the sheet sample is clamped between the first clamp end 8 and the second clamp end 9, thereby clamping the sheet sample. After the sheet sample is stably placed in the central part of the hanging basket, the force is unloaded to take out the precision density balance with tweezers, thereby avoiding collision with the hanging basket or the cup wall, thereby improving the accuracy of the measurement.
Claims
1. A pair of tweezers for a precision density balance, characterized in that: The invention comprises a shell plate, wherein the shell plate comprises a first shell plate (1) and a second shell plate (2), wherein the first shell plate (1) and the second shell plate (2) are arranged in parallel, and the first shell plate (1) and the second shell plate (2) are both in a Z shape, a return spring (3) is installed between one end of the first shell plate (1) and one end of the second shell plate (2), a tweezer arm is connected between one end of the shell plate and the other end of the shell plate, and the other end of the shell plate is a clamping end.
2. A pair of tweezers for a precision density balance according to claim 1, characterized in that: A first tweezer arm (6) is connected between one end of the first shell plate (1) and the other end of the first shell plate (1), and a second tweezer arm (7) is connected between one end of the second shell plate (2) and the other end of the second shell plate (2).
3. A pair of tweezers for a precision density balance according to claim 2, characterized in that: A stopper (5) is connected between the same side of the first tweezer arm (6) and the second tweezer arm (7).
4. A pair of tweezers for a precision density balance according to claim 2, characterized in that: A finger hook portion (4) is mounted on a side of the second tweezer arm (7) away from the first tweezer arm (6).
5. A pair of tweezers for a precision density balance according to claim 2, characterized in that: The distance between the first tweezers arm (6) and the second tweezers arm (7) is 5 mm-10 mm.
6. A pair of tweezers for a precision density balance according to claim 1, characterized in that: The other end of the first shell plate (1) is a first clamping end (8), and the other end of the second shell plate (2) is a second clamping end (9).
7. A pair of tweezers for a precision density balance according to claim 6, characterized in that: The first clamping end (8) and the second clamping end (9) are both anti-slip treated.
8. The tweezers for a precision density balance according to claim 6, characterized in that: The distance between the first clamping end (8) and the second clamping end (9) is 5 mm to 10 mm.
9. The tweezers for a precision density balance according to claim 1, characterized in that: The free length of the return spring (3) is 5 mm-10 mm.
10. The tweezers for a precision density balance according to claim 1, characterized in that: The angle between the forceps arm and the clamp end is 90°-120°.