Beam's elastomer high-precision quick-sticking process and patch assembly of beam's elastomer high-precision quick-sticking process

Abstract

The invention relates to the technical field of force sensors, in particular to a high-precision quick-pasting process for a Beam's elastomer and a paster assembly of the Beam's elastomer. Aiming at the problems that a beam type elastomer pasting area is narrow in space and irregular in distribution, the manual pasting efficiency is low, the precision is greatly influenced by personnel experience, automatic pasting operation faces significant challenges, and the requirements of large-scale industrial production for consistency and high precision are difficult to meet, the following technical scheme is provided: the rapid pasting process comprises the following steps: S1, carrying out rapid pasting; a plurality of temporary patch mold units are assembled into a patch assembly of a chain-shaped structure; s2, the patch assembly is unfolded to be in a plane state, and the temporary patch mold unit is coated with temporary bonding glue; and S3, mounting the strain gauges by adopting visual alignment equipment. According to the invention, automatic high-precision surface mounting of the beam type elastomer can be realized, the production efficiency and the surface mounting consistency are improved, the large-scale industrial production requirement is met, and the measurement reliability of the multi-dimensional force sensor is ensured.

Description

Technical Field

[0001] This invention relates to the field of force sensor technology, and in particular to a high-precision quick-attachment process for a beam elastomer and its patch assembly. Background Technology

[0002] In the field of multidimensional force sensor manufacturing, beam-type elastomers are the core sensing elements, and their performance directly determines the measurement accuracy and reliability of the sensor. To achieve accurate acquisition of multidimensional force signals, strain gauges are typically mounted on multiple surfaces of the beam-type elastomer. These strain gauges sense the minute deformations of the elastomer under stress and then convert them into electrical signals for output.

[0003] However, the structural characteristics of beam-type elastomers mean that their application areas are often small and irregularly distributed, posing a significant challenge to automated application operations. Traditional manual application methods are not only inefficient, but their accuracy is also greatly affected by the operator's experience and skill, making it difficult to meet the consistency and high precision requirements of large-scale industrial production. Therefore, this invention proposes a high-precision, rapid application process for beam-type elastomers and its application assembly. Summary of the Invention

[0004] The purpose of this invention is to address the problems in the background technology where the beam-type elastomer patch area is small and irregularly distributed, resulting in low efficiency and high accuracy due to the influence of human experience on manual patching, and significant challenges to automated patching operations, making it difficult to meet the consistency and high precision requirements of large-scale industrial production. The invention proposes a high-precision fast patching process for beam-type elastomers and its patching assembly.

[0005] In a first aspect, the present invention proposes a high-precision quick-applied process for Liang's elastomer, comprising the following steps:

[0006] S1, assembling multiple temporary patch mold units into a chain-like patch assembly;

[0007] S2, unfold the patch assembly into a planar state, and apply temporary bonding adhesive to the temporary patch mold unit;

[0008] S3, The strain gauge is attached to the temporary patch mold unit using a visual alignment device;

[0009] S4, apply curing adhesive to the strain gauge or target elastomer;

[0010] S5, the patch assembly is aligned and pressed onto the elastomer, so that the chain structure surrounds the elastomer;

[0011] S6, perform curing treatment to invalidate the temporary bonding adhesive, while the cured adhesive fixes the strain gauge to the elastomer, and then remove the patch assembly.

[0012] Optionally, in step S3, the visual alignment device is used to identify positioning marks on the temporary patch mold unit or features on the strain gauge to achieve precise alignment.

[0013] Optionally, in step S4, the curing adhesive is a high-temperature curing adhesive, and the curing adhesive is coated on the strain gauge substrate.

[0014] Optionally, in step S5, the pressing process starts from one end of the chain structure and sequentially presses adjacent temporary patch mold units until all temporary patch mold units are attached to the elastomer.

[0015] Optionally, in step S6, the curing process is high-temperature curing, and the temporary bonding adhesive loses its adhesiveness or decomposes after reaching a temperature of 150°C to 350°C or higher.

[0016] In a second aspect, the present invention proposes a patch assembly for implementing the process described in the first aspect, comprising a plurality of temporary patch mold units, wherein pins are provided between the plurality of temporary patch mold units, and the plurality of temporary patch mold units are rotatably connected in series via the pins to form a chain structure, wherein a layer of silicone is vulcanized on the surface of each temporary patch mold unit, and strain gauges are electrostatically adsorbed; the chain structure can be unfolded into a planar state to adhere strain gauges, and can be closed to attach the strain gauges to multiple surfaces of an elastomer.

[0017] Optionally, at least one set of first protrusions is fixedly connected to one side of the temporary patch mold unit, and at least two sets of second protrusions are fixedly connected to the other side of the temporary patch mold unit, with the first protrusions and the second protrusions being arranged alternately.

[0018] Optionally, the first protrusion has a first through hole, and the second protrusion has a second through hole.

[0019] Optionally, the diameters of the first through hole and the second through hole are equal.

[0020] Optionally, the pin passes through the first through hole and the second through hole.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This invention forms a deformable chain structure by connecting temporary patch mold units in series with pins. The staggered engagement of the first and second protrusions and the precise insertion of the pins ensure the relative positional stability between each temporary patch mold unit.

[0023] Furthermore, by using a visual alignment device in a planar state to accurately identify the positioning marks or strain gauge features of the temporary patch mold unit, high-precision alignment of the strain gauge pre-installation is achieved. During subsequent transfer and installation, the chain structure closes and surrounds the elastomer, and the sequential pressing operation further ensures the consistency of the fit between the strain gauge and the elastomer surface. This effectively avoids the patching deviation caused by manufacturing and assembly errors and height inconsistencies in traditional temporary patch boards and molds, providing a reliable guarantee for the accurate measurement of multi-dimensional force sensors.

[0024] In summary, this invention enables automated, high-precision patching of beam-type elastomers, improves production efficiency and patching consistency, meets the needs of large-scale industrial production, and ensures the reliability of multi-dimensional force sensor measurements. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a high-precision patch assembly using a beam elastomer.

[0026] Figure 2 This is a schematic diagram of the temporary patch die unit;

[0027] Figure 3 This is a schematic diagram of a patch assembly being mounted onto an elastomer.

[0028] Figure label:

[0029] 1. Temporary patch mold unit; 2. Pin; 3. Strain gauge;

[0030] 11. First protrusion; 111. First through hole; 12. Second protrusion; 121. Second through hole. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example: Figures 1 to 3 As shown, the present invention proposes a high-precision quick-bonding process for Liang's elastomer, which includes the following steps:

[0037] S1, multiple temporary patch mold units 1 are assembled into a chain-like patch assembly. The temporary patch mold unit 1 serves as a temporary support and transfer carrier for the strain gauge 3, ensuring the stability of the strain gauge 3 during transfer and improving patching accuracy. The patch assembly includes four temporary patch mold units 1, with pins 2 positioned between them. The pins 2 allow for flexible rotation of adjacent temporary patch mold units 1, providing rotational support for the unfolding and closing of the chain-like structure. The four temporary patch mold units 1 are rotatably connected in series via the pins 2 to form a chain-like structure. A layer of silicone is vulcanized on the surface of the temporary patch mold unit 1, and the strain gauge 3 is electrostatically adsorbed. When the strain gauge 3 is pressed, the silicone portion is compressed, ensuring uniform force distribution. A set of first protrusions 11 is fixedly connected to one side of the temporary patch mold unit 1. The first protrusions 11 and second protrusions 12 cooperate to achieve the connection and positioning of adjacent mold units, ensuring the accuracy of the connection. Two sets of second protrusions 12 are fixedly connected to the other side of the temporary patch mold unit 1. The second protrusions 12 and the first protrusions 11 are staggered to increase the connection contact area and improve the structural stability. The first protrusions 11 and the second protrusions 12 are staggered. A first through hole 111 is opened in the first protrusion 11. The first through hole 111 provides a passage for the pin 2 to pass through, ensuring that the pin 2... To ensure coaxiality during installation, a second through hole 121 is provided in the second protrusion 12. The diameter of the second through hole 121 is equal to that of the first through hole 111, which ensures that the pin 2 can be smoothly inserted and avoids rotation jamming due to the difference in hole diameter. The diameters of the first through hole 111 and the second through hole 121 are equal, and the pin 2 is inserted into the first through hole 111 and the second through hole 121. The four sets of temporary patch mold units 1 are connected end to end and rotated through the pin 2 to form a chain structure. The chain structure can be flexibly adjusted according to the shape of the elastomer, taking into account both the convenience of planar patching and the adaptability of multi-sided mounting.

[0038] The chain structure can be unfolded into a planar state to attach strain gauge 3. The planar state facilitates uniform and accurate alignment by visual alignment equipment, improving the initial mounting efficiency of strain gauge 3. At the same time, it can be closed to mount strain gauge 3 onto multiple surfaces of the elastomer. The closed state enables simultaneous mounting of multiple surfaces of the elastomer, reducing the need for multiple alignment operations.

[0039] S2, unfold the patch assembly into a planar state, and apply temporary bonding adhesive to the temporary patch mold unit 1. The temporary bonding adhesive can temporarily fix the strain gauge 3 on the temporary patch mold unit 1, and can subsequently fail under specific conditions, making it easy to remove the patch assembly.

[0040] S3. The strain gauge 3 is attached to the temporary mounting mold unit 1 using a visual alignment device. The visual alignment device is used to identify the positioning marks on the temporary mounting mold unit 1 or the features on the strain gauge 3 to achieve accurate alignment. The visual alignment device can control the mounting error to a very small range by accurately identifying feature points, thus ensuring the initial mounting accuracy of the strain gauge 3.

[0041] S4. Apply curing adhesive to strain gauge 3 or target elastomer. The curing adhesive is a high-temperature curing adhesive. The high-temperature curing adhesive is cured under specific high-temperature conditions, which can form a stable and firm bonding effect, ensuring that strain gauge 3 is reliably fixed for a long time. The curing adhesive is applied to the substrate of strain gauge 3. Applying it to the substrate can make the curing adhesive fully contact the surface of the elastomer, thereby improving the bonding strength.

[0042] S5, align and press the patch assembly onto the elastomer, so that the chain structure surrounds the elastomer. The surrounding state allows multiple temporary patch mold units 1 to simultaneously correspond to different surfaces of the elastomer, achieving multi-sided synchronous patching. The pressing process starts from one end of the chain structure and sequentially presses adjacent temporary patch mold units 1 until all temporary patch mold units 1 are attached to the elastomer. Sequential pressing ensures that each temporary patch mold unit 1 is tightly attached to the surface of the elastomer, avoiding the impact of poor local adhesion on patch quality.

[0043] S6. A curing process is performed to disable the temporary bonding adhesive. Simultaneously, the cured adhesive fixes the strain gauge 3 to the elastomer. The patch assembly is then removed. The curing process simultaneously disables the temporary bonding adhesive and cures the cured adhesive, simplifying the process steps and improving production efficiency. The curing process is high-temperature curing, which is simple to operate and provides stable curing results. The temporary bonding adhesive loses its tackiness or decomposes after reaching temperatures above 150℃ to 350℃. This temperature range ensures that the temporary bonding adhesive completely fails while avoiding damage to the elastomer and strain gauge 3. At the same time, the high-temperature cured adhesive cures after reaching this temperature, allowing the two adhesives to perform their respective functions under the same process conditions, further optimizing the process flow.

[0044] In this embodiment, four temporary patch mold units 1 are first connected in series to form a chain structure via pins 2. A first protrusion 11 on one side of each temporary patch mold unit 1 is staggered with a second protrusion 12 on the other side of the adjacent unit. Pins 2 pass through the first through hole 111 of the first protrusion 11 and the second through hole 121 of the second protrusion 12. The rotational characteristics of pins 2 give the chain structure the ability to expand and close. This structural design allows the patch assembly to provide a flat and uniform operating reference for the batch pre-mounting of strain gauges 3 when expanded into a planar state, and to adapt to the multi-surface mounting requirements of elastomers through the synchronous wrapping of multiple sets of temporary patch mold units 1 when closed.

[0045] During the pre-mounting stage of strain gauge 3, after the mounting assembly is unfolded into a plane, temporary bonding adhesive applied to the surface of the temporary mounting mold unit 1 provides temporary fixation. Its adhesiveness ensures that strain gauge 3 does not shift during transfer. Subsequently, the vision alignment device identifies the positioning marks on the temporary mounting mold unit 1 or the characteristics of strain gauge 3 itself to achieve high-precision alignment and mounting of strain gauge 3 with the temporary mounting mold unit 1. This process, with the high accuracy of vision recognition, controls the initial mounting error of strain gauge 3 to a very small range, laying the foundation for subsequent transfer accuracy.

[0046] While the high-temperature curing adhesive coated on the strain gauge 3 substrate is in an uncured state, the chain-like patch assembly is aligned with the elastomer and the temporary patch mold unit 1 is pressed sequentially from one end, ensuring that the strain gauge 3 on each unit surface is in close contact with the corresponding surface of the elastomer. This sequential pressing method utilizes the rotational flexibility of the chain structure to ensure a reliable fit between each temporary patch mold unit 1 and the elastomer surface, preventing incomplete adhesion of the cured adhesive due to localized gaps.

[0047] Finally, a high-temperature curing process is applied. When the temperature reaches 150℃~350℃, the temporary bonding adhesive loses its tackiness or decomposes and fails, releasing its temporary binding on strain gauge 3. Simultaneously, the high-temperature curing adhesive completes its curing reaction at this temperature, firmly bonding strain gauge 3 to the surface of the elastomer. The two adhesives achieve functional conversion under the same temperature conditions, allowing for the fixation of strain gauge 3 and separation of the patch assembly without additional steps. Finally, the entire high-precision rapid patching process is completed by removing the chain-like temporary patching mold unit 1, ensuring patching accuracy while significantly improving production efficiency.

[0048] The above specific embodiments are merely optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high-precision quick-applied process for Liang's elastomer, characterized in that, Includes the following steps: S1, assemble multiple temporary patch mold units (1) into a chain-like patch assembly; S2, unfold the patch assembly into a planar state, and apply temporary bonding adhesive to the temporary patch mold unit (1); S3, the strain gauge (3) is attached to the temporary patch mold unit (1) using a visual alignment device; S4, apply curing adhesive to the strain gauge (3) or the target elastomer; S5, the patch assembly is aligned and pressed onto the elastomer, so that the chain structure surrounds the elastomer; S6, perform curing treatment to invalidate the temporary bonding adhesive, while the cured adhesive fixes the strain gauge (3) to the elastomer, and then remove the patch assembly.

2. The high-precision quick-applied process for Liang's elastomer according to claim 1, characterized in that, In step S3, the visual alignment device is used to identify the positioning marks on the temporary patch mold unit (1) or the features on the strain gauge (3).

3. The high-precision quick-applied process for Liang's elastomer according to claim 1, characterized in that, In step S4, the curing adhesive is a high-temperature curing adhesive, and the curing adhesive is coated on the strain gauge (3) substrate.

4. The high-precision quick-applied process for Liang's elastomer according to claim 1, characterized in that, In step S5, the pressing process starts from one end of the chain structure and sequentially presses adjacent temporary patch mold units (1) until all temporary patch mold units (1) are attached to the elastomer.

5. The high-precision quick-applied process for Liang's elastomer according to claim 1, characterized in that, In step S6, the curing process is high-temperature curing, and the temporary bonding adhesive loses its adhesiveness or decomposes after reaching a temperature of 150℃ to 350℃ or higher.

6. A patch assembly for implementing the process described in any one of claims 1-5, characterized in that, include: Multiple temporary patch mold units (1) are provided with pins (2) between the multiple temporary patch mold units (1). The multiple temporary patch mold units (1) are rotatably connected in series through the pins (2) to form a chain structure. A layer of silicone is vulcanized on the surface of the temporary patch mold unit (1) and electrostatic adsorption strain gauges (3) are used. The chain structure can be unfolded into a planar state to attach strain gauges (3), and can be closed to attach strain gauges (3) to multiple surfaces of the elastomer.

7. A patch assembly according to claim 6, characterized in that, The temporary patch mold unit (1) has at least one set of first protrusions (11) fixedly connected to one side, and at least two sets of second protrusions (12) fixedly connected to the other side, with the first protrusions (11) and the second protrusions (12) being arranged alternately.

8. A patch assembly according to claim 7, characterized in that, The first protrusion (11) has a first through hole (111), and the second protrusion (12) has a second through hole (121).

9. A patch assembly according to claim 8, characterized in that, The diameters of the first through hole (111) and the second through hole (121) are equal.

10. A patch assembly according to claim 9, characterized in that, The pin (2) passes through the first through hole (111) and the second through hole (121).

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