Overload protection device for elastomer in weighing sensor

Abstract

The utility model provides an elastomer overload protection device in a weighing sensor, which relates to the technical field of weighing sensors and comprises a fixed end and a loading end, and an elastomer main body is fixed between the fixed end and the loading end. Due to the characteristic of tangent contact of the cambered surfaces of the openings, when the elastomer body is pressed, the semicircles can adapt to deformation of the elastomer body to a certain extent, a good supporting effect is kept all the time, when the elastomer body is pressed, especially under the overload condition, the weak points supported by the four semi-circular tops can disperse the pressure, and therefore the supporting effect is improved. Due to the fact that the semi-circular top makes contact with a weak point through the arc surface tangent line, pressure can be evenly dispersed along the arc surface, the situation that local pressure is too large is avoided, the structure composed of the four triangular sliding blocks and the adjusting screws provides a stable supporting foundation for the semi-circular top, the semi-circular top is not prone to displacement or deformation when bearing the pressure, and the service life of the semi-circular top is prolonged. Therefore, the whole elastomer main body can maintain a stable structure when being pressed, and damage caused by overlarge stress of a weak point is prevented.

Description

Technical Field

[0001] This utility model relates to the field of weighing sensor technology, and in particular to an overload protection device for the internal elastic body of a weighing sensor. Background Technology

[0002] Automatic dispensing machines, such as glue dispensing machines and spot welding machines, are commonly used in automated industrial production. When dispensing, there are strict regulations on the quality and volume of the dispensing material. Therefore, it is necessary to weigh the mass of each dispensing. Since the dispensing mass is small, a precise, micro-range weighing instrument is required for measurement.

[0003] Currently, one type of overload protection device for the internal elastomer of a weighing sensor has a complex internal overload protection mechanism, making operation cumbersome and replacement and manufacturing costs high. This results in poor adaptability of the elastomer, significant limitations, and poor practicality. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of existing technologies where the internal overload protection mechanism has many structures, is very cumbersome to operate, has high replacement and manufacturing costs, and results in poor adaptability of the elastomer, large limitations, and poor practicality. Therefore, this utility model proposes an overload protection device for the elastomer inside a weighing sensor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an overload protection device for an elastic body inside a weighing sensor, comprising a fixed end and a loading end, wherein an elastic body is fixed between the fixed end and the loading end, and an adjusting screw is provided inside the elastic body, wherein two triangular sliders are threaded to both ends of the adjusting screw, and both ends of the two sets of triangular sliders are provided with semi-circular domes inside the elastic body.

[0006] Preferably, the inner wall of the elastomer body has openings at both ends that match the semi-circular dome.

[0007] Preferably, a gear is mounted on the outer wall of the adjusting screw.

[0008] Preferably, the two triangular sliders within each set of triangular sliders are matched.

[0009] Preferably, the top end of the fixed end has a mounting hole.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] In this invention, before the device is activated, the adjusting screw is in an adjustable state, and the four triangular sliders are not yet in close contact with the four weak points of the elastic body. At this time, the entire device does not provide protection, and the elastic body is in a natural state. An external mechanism rotates the gear components, driving the adjusting screw to rotate. Utilizing the screw's helical transmission principle, the rotational motion is converted into linear motion. As the adjusting screw rotates, it pushes the four triangular sliders along a specific track or structure towards the elastic body. When the triangular sliders reach a certain position, they lift the four semi-circular domes, causing the semi-circular domes to contact the four weak points at the openings of the elastic body with tangential arc surfaces. This contact method provides support while ensuring uniform force distribution and avoiding stress concentration. Due to the characteristic of tangential arc surface contact, when the elastic body is under pressure, the semi-circles can adapt to the deformation of the elastic body to a certain extent, maintaining good support. When the elastic body is under pressure, especially under overload conditions, the four semi-circles... The dome-shaped support effectively distributes pressure at weak points. Because the semi-dome contacts the weak points with a tangential arc, the pressure is evenly distributed along the arc, preventing excessive local pressure. The structure consisting of four triangular sliders and adjusting screws provides a stable support base for the semi-dome, preventing it from easily shifting or deforming under pressure. This ensures the entire elastomer maintains structural stability under pressure, preventing damage due to excessive force on weak points. This device specifically supports and protects the four weak points of the elastomer, precisely providing uniform support force through tangential arc contact, effectively preventing damage due to uneven force and significantly improving the elastomer's overload resistance. When the elastomer is under pressure, especially under overload conditions, this device stably supports the elastomer, reducing deformation and maintaining overall structural stability. This is crucial for ensuring the normal operation of equipment using the elastomer body, reducing the probability of equipment failure due to damage to the elastomer body. By effectively protecting the weak points of the elastomer body, it reduces the risk of damage to the elastomer under overload conditions, thereby extending the service life of the elastomer body, reducing equipment maintenance costs and replacement frequency, and improving the overall economic efficiency of the equipment. The arc-surface tangential contact support method allows the device to adapt to the deformation of the elastomer body within a certain range. Regardless of whether the pressure on the elastomer body gradually increases or changes suddenly, it can continuously provide stable support, has strong adaptability, and can be widely used in various elastomer body equipment that may experience overload conditions. Attached Figure Description

[0012] Fig. 1 A perspective view of an overload protection device for the internal elastic body of a weighing sensor is provided for this utility model;

[0013] Fig. 2This utility model provides a schematic diagram of the external structure of the adjusting screw of an overload protection device for an internal elastic body of a weighing sensor.

[0014] Fig. 3 This invention provides a schematic diagram of the elastic body of an overload protection device for an internal elastic body in a weighing sensor.

[0015] Legend: 1. Elastomer body; 2. Adjusting screw; 3. Gear; 4. Triangular slider; 5. Semi-circular dome; 6. Opening; 7. Mounting hole; 8. Loading end; 9. Fixing end. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1, as Figs. 1-3 As shown, this utility model provides an overload protection device for the elastic body inside a weighing sensor, including a fixed end 9 and a loading end 8. An elastic body 1 is fixed between the fixed end 9 and the loading end 8. An adjusting screw 2 is provided inside the elastic body 1. Two triangular sliders 4 are threaded to both ends of the adjusting screw 2. Both ends of the two sets of triangular sliders 4 are provided with semi-circular domes 5 inside the elastic body 1.

[0019] The overall effect of Embodiment 1 is as follows: before the device is activated, the adjusting screw 2 is in an adjustable state, and the four triangular sliders 4 are not yet in close contact with the four weak points of the elastic body 1. At this time, the entire device does not provide protection, and the elastic body 1 is in a natural state. By rotating the adjusting screw 2, the rotational motion is converted into linear motion using the screw's helical transmission principle. As the adjusting screw 2 rotates, it pushes the four triangular sliders 4 to move along a specific track or structure toward the elastic body 1. When the triangular sliders 4 move to a certain position, they will lift the four semi-circular domes 5, so that the semi-circular domes 5 make contact with the weak points at the four openings 6 of the elastic body 1 with an arc tangent. This contact method can provide support while ensuring uniform force distribution and avoiding stress concentration. Due to the characteristic of the arc tangent contact of the openings 6, when the elastic body 1 is under pressure, the semi-circles can adapt to the deformation of the elastic body 1 to a certain extent, always maintaining a good support effect. When the elastic body 1 is under pressure, especially under overload conditions, the four semi-circular domes 5 provide support. The device can distribute pressure at the weak points. Since the semi-circular dome 5 contacts the weak points with a tangential arc surface, the pressure will be evenly distributed along the arc surface, avoiding excessive local pressure. The structure composed of four triangular sliders 4 and adjusting screws 2 provides a stable support base for the semi-circular dome 5, so that the semi-circular dome 5 will not easily shift or deform when subjected to pressure, thereby ensuring that the entire elastomer body 1 can maintain structural stability under pressure and prevent damage due to excessive force on the weak points. This device is specifically designed to support and protect the four weak points of the elastomer body 1. Through tangential arc surface contact, it accurately provides uniform support force to the weak points, effectively avoiding damage to the weak points due to uneven force, and greatly improving the overload resistance of the elastomer body 1. When the elastomer body 1 is subjected to pressure, especially under overload conditions, this device can stably support the elastomer body 1, reduce the degree of deformation of the elastomer body 1, and maintain the stability of its overall structure. This is crucial for ensuring the normal operation of equipment using the elastomer body 1, reducing the probability of equipment failure due to damage to the elastomer body 1. By effectively protecting the weak points of the elastomer body 1, the risk of damage to the elastomer under overload conditions is reduced, thereby extending the service life of the elastomer body 1, reducing equipment maintenance costs and replacement frequency, and improving the overall economic efficiency of the equipment. The arc-surface tangential contact support method allows the device to adapt to the deformation of the elastomer body 1 within a certain range. Regardless of whether the pressure on the elastomer body 1 gradually increases or changes suddenly, it can continuously provide stable support, has strong adaptability, and can be widely used in various elastomer body 1 equipment where overload conditions may occur.

[0020] Example 2, as Figs. 1-3As shown, the inner walls of the elastomer body 1 are provided with openings 6 at both ends that match the semi-circular dome 5. Gear parts 3 are installed on the outer wall of the adjusting screw 2. The two triangular sliders 4 in each set of triangular sliders 4 match each other. The top of the fixed end 9 has a mounting hole 7.

[0021] The overall effect of embodiment 2 is that the gear component 3 facilitates the rotation of the adjusting screw 2 via an external mechanism, and the mounting hole 7 facilitates the installation of an external load-bearing pallet mechanism.

[0022] Working Principle: Before activation, the adjusting screw 2 is in an adjustable state, and the four triangular sliders 4 are not yet in close contact with the four weak points of the elastic body 1. At this time, the entire device does not provide protection, and the elastic body 1 is in its natural state. An external mechanism rotates the gear component 3, driving the adjusting screw 2 to rotate. Utilizing the helical transmission principle of the adjusting screw 2, the rotational motion is converted into linear motion. As the adjusting screw 2 rotates, it pushes the four triangular sliders 4 along a specific track or structure towards the elastic body 1. When the triangular sliders 4 reach a certain position, they lift the four semi-circular domes 5, causing the semi-circular domes 5 to contact the weak points at the four openings 6 of the elastic body 1 with an arc-shaped tangential contact. This contact method provides support while ensuring uniform force distribution and avoiding stress concentration. Due to the characteristics of contact, when the elastomer body 1 is subjected to pressure, the semicircles can adapt to the deformation of the elastomer body 1 to a certain extent, and always maintain a good support effect. When the elastomer body 1 is subjected to pressure, especially under overload conditions, the weak points supported by the four semicircles 5 can disperse the pressure. Since the semicircles 5 and the weak points are in contact with the arc tangent, the pressure will be evenly distributed along the arc surface, avoiding excessive local pressure. The structure composed of the four triangular sliders 4 and the adjusting screws 2 provides a stable support base for the semicircles 5, so that the semicircles 5 will not easily shift or deform when subjected to pressure, thereby ensuring that the entire elastomer body 1 can maintain structural stability when subjected to pressure and preventing damage due to excessive force on the weak points.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An overload protection device for the internal elastic body of a weighing sensor, comprising a fixed end (9) and a loading end (8), characterized in that: An elastomer body (1) is fixed between the fixed end (9) and the loading end (8). An adjusting screw (2) is provided inside the elastomer body (1). Two triangular sliders (4) are threaded to both ends of the adjusting screw (2). Both ends of the two sets of triangular sliders (4) are provided with semi-circular domes (5) inside the elastomer body (1).

2. The overload protection device for the internal elastic body of a weighing sensor according to claim 1, characterized in that: The inner walls of the elastomer body (1) are provided with openings (6) that match the semi-domes (5) at both ends.

3. The overload protection device for the internal elastic body of a weighing sensor according to claim 1, characterized in that: A gear component (3) is installed on the outer wall of the adjusting screw (2).

4. The overload protection device for the internal elastic body of a weighing sensor according to claim 1, characterized in that: The two triangular sliders (4) within each set of triangular sliders (4) are matched.

5. The overload protection device for the internal elastic body of a weighing sensor according to claim 1, characterized in that: The top of the fixed end (9) has a mounting hole (7).

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