Resistance strain gauge packaging structure and packaging method

Abstract

The invention relates to the technical field of electronic component packaging, and provides a resistance strain gauge packaging structure which comprises a substrate material layer, and the substrate material layer is provided with a flat surface and is used for bearing a resistance strain gauge; the resistance strain gauge comprises a substrate material layer and a low-viscosity film layer, the low-viscosity film layer is distributed on the surface of the substrate material layer in an array mode and makes contact with a macromolecule substrate material of the resistance strain gauge, the substrate material layer is a hard plastic sheet or paper, and the low-viscosity film layer is made of a silica gel film or a film with certain surface viscosity. According to the resistance strain gauge packaging structure, standardization of coordinate positions of strain gauge product packaging is achieved, follow-up procedures can be accurately butted through a fixed and unified coordinate form, production continuity and precision are improved, products can be firmly fixed through low-adhesion materials, physical damage and chemical pollution can be avoided, and the production efficiency is improved. Therefore, the product performance is guaranteed, regular placement and automatic vacuum suction cups are matched, taking is convenient, the production efficiency and quality are improved, and meanwhile, the product quality can be tracked and traced conveniently through standardized coordinate positions.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component packaging, and in particular to a resistance strain gauge packaging structure and a packaging method. Background Art

[0002] A resistance strain gauge is a sensitive element that can convert mechanical strain into resistance changes. It is mainly composed of a polymer material substrate and a metal foil with a thickness of no more than 100μm. When deformed by external force, the resistance value of the metal foil will change accordingly. By measuring the resistance change, the strain magnitude can be calculated. It is widely used in stress measurement, sensor manufacturing and other fields.

[0003] For a long time, resistance strain gauges have been primarily packaged using sheet clips and sleeves, where the gauges are clamped in a loose-leaf structure. While this method can prevent bending and ensure neat arrangement, folding and placing the gauges is time-consuming, inconvenient for manual handling, inefficient, and unsuitable for automation. Alternatively, there is bulk packaging, where the strain gauges are first arranged on paper, covered with a layer of plastic foam or sponge, and then placed in a box. This method is cumbersome to use, and even slight vibrations or shaking can cause the strain gauges to be placed disorganized, easily causing wear and damage. Furthermore, serial number markings cannot be guaranteed, making it difficult to implement packaging processes such as quality traceability. More seriously, these traditional packaging methods rely heavily on manual labor, resulting in low subsequent production efficiency and incompatibility with automated patch processing. Furthermore, resistance strain gauges are composed of a thin, brittle polymer base material and a thin metal foil, making them susceptible to breakage during traditional packaging operations. Therefore, a new packaging structure and method are urgently needed to address these issues. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a resistance strain gauge packaging structure and packaging method, which solves the problems of insufficient packaging efficiency and reliability of resistance strain gauges in the existing technology. At the same time, it adds resistance strain gauge product information in the packaging, facilitates subsequent quality traceability, and standardizes the product coordinate position in the packaging, which helps support the automation of subsequent patch use processes.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A resistance strain gauge packaging structure, comprising:

[0006] a base material layer having a flat surface for carrying the resistance strain gauge;

[0007] The low-viscosity membrane layer is distributed in an array on the surface of the base material layer and is in contact with the polymer base material of the resistance strain gauge.

[0008] Preferably, the base material layer is a hard plastic sheet or paper with a thickness of 0.1-1.0 mm.

[0009] Preferably, the low-viscosity layer is made of a silicone film or a film with a certain surface viscosity, with a thickness of 4-50 μm and a surface adhesion of 0.05-0.5 N / cm 2 , used to secure resistance strain gauges and allows non-destructive separation.

[0010] Preferably, at least one-third of the base material surface of the strain gauge product is in contact with the surface of the low-adhesion membrane layer.

[0011] Preferably, the low-adhesion membrane layer and the base material layer are fixed by glue or double-sided tape.

[0012] Preferably, a packaging method for a resistance strain gauge packaging structure comprises the following steps:

[0013] S1. Coordinate template setting: Define the arrangement position and spacing of the resistance strain gauges on the base material layer by setting a standardized coordinate template;

[0014] S2. Positioning and Fixing: Position and fix the resistance strain gauge on the surface of the low-viscosity layer according to the coordinate template, ensuring that the strain gauge product is fixed and does not deviate;

[0015] S3. Cleaning and quality inspection: Use optical inspection equipment to verify the alignment accuracy and integrity of the fixed resistance strain gauge.

[0016] Preferably, in step S1, the standardized coordinate template is automatically generated by a computer program, and the computer program calculates and generates the coordinate distribution based on the size of the base material layer and the preset spacing of the resistance strain gauges.

[0017] Preferably, in step S1, the standardized coordinate template is manually set, including marking the coordinate position of the resistance strain gauge on the base material layer using a ruler and a positioning marking tool.

[0018] Preferably, in step S2, a vacuum suction cup device is used for automated suction and positioning. The vacuum suction cup device is equipped with a multi-axis robotic arm, which sequentially sucks up the resistance strain gauge according to the coordinate template and adheres it to the surface of the low mucosal layer with a positioning accuracy of less than ±0.1 mm.

[0019] Preferably, in step S2, a manual placement method is adopted, and the operator uses tweezers to adhere the resistance strain gauge to the surface of the low mucosal layer according to the position marked on the coordinate template, with a positioning accuracy of ≤±0.3mm.

[0020] The present invention provides a resistance strain gauge packaging structure and packaging method. It has the following beneficial effects:

[0021] 1. The packaging structure and method of the invention abandon the traditional tablet clip / tablet sleeve and bulk packaging forms that rely on a lot of manual operations, and adopt low-adhesion low-viscosity film layer adsorption packaging, which can ensure the fixed position of the packaging without causing any damage to the product.

[0022] 2. The present invention sets a standardized coordinate template, whether it is automatically generated or manually set, and cooperates with an automated vacuum suction cup device to absorb and position, or manually and accurately place it. It can output the subsequent use process for docking, facilitate later picking, adapt to the rhythm of industrial production, improve production efficiency and quality, and is well compatible with automated patch technology, overcoming the disadvantage that traditional packaging cannot adapt to automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the packaging structure of the strain gauge of the present invention;

[0024] Figure 2 This is a flow chart of the packaging method of embodiment 3 of the present invention;

[0025] Figure 3 This is a flow chart of the packaging method according to embodiment 4 of the present invention;

[0026] Figure 4 This is a schematic diagram of the packaging box structure of Example 4 of the present invention.

[0027] Among them, 1. Base material layer; 2. Low mucous membrane layer. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] Please see the attached Figure 1 , an embodiment of the present invention provides a resistance strain gauge packaging structure, comprising:

[0031] The base material layer is made of a hard plastic sheet with a thickness of 0.3 mm, which has good support and can effectively protect the resistance strain gauge from external force extrusion and deformation during transportation and storage;

[0032] The low-viscosity layer is distributed on the surface of the base material layer in an array. It uses a silicone film with a thickness of 10μm and a surface adhesion of 0.08N / cm 2The low adhesion property of the silicone film allows the resistance strain gauge to be stably fixed on the surface of the low-viscosity membrane layer, and can also be easily and non-destructively separated when needed, without causing damage to the polymer base material of the resistance strain gauge. The low-viscosity membrane layer is tightly fixed to the surface of the base material layer through the glue, ensuring that the low-viscosity membrane layer will not move in various environments, thereby ensuring the packaging stability of the resistance strain gauge.

[0033] Example 2:

[0034] This embodiment provides a resistance strain gauge packaging structure, including:

[0035] The base material layer is made of 0.2mm thick paper, which is low in cost and has a certain degree of flexibility. While ensuring that it can carry the resistance strain gauge, it can also reduce the overall packaging weight.

[0036] The low-viscosity layer is distributed on the surface of the base material layer in an array. It is made of low-viscosity film with a thickness of 15 μm and a surface adhesion of 0.06 N / cm 2 More than one-third of the polymer base material surface of the resistance strain gauge is adsorbed on the surface of the low-viscosity membrane layer, ensuring the fixing effect. The low-viscosity membrane layer and the base material layer are fixed with double-sided tape. The use of double-sided tape makes the replacement or adjustment of the low-viscosity membrane layer more convenient. If the low-viscosity membrane layer is damaged or the layout of the resistance strain gauge needs to be adjusted, the double-sided tape structure can be used to achieve rapid disassembly and replacement of the low-viscosity membrane layer.

[0037] Example 3:

[0038] Please see the attached Figure 2 , an embodiment of the present invention provides a packaging method for a resistance strain gauge packaging structure, comprising the following steps:

[0039] S1. Coordinate Template Setting: A standardized coordinate template is automatically generated by a computer program. This program accurately calculates the coordinate distribution based on the dimensions of the base material layer, such as 100 mm in length and 80 mm in width, and the preset spacing of the resistance strain gauges at 5 mm. The generated coordinate template is stored in a to-be-determined data format to ensure that the resistance strain gauges are evenly arranged on the base material layer, fully utilizing the space in the base material layer and improving packaging efficiency.

[0040] S2. Positioning and Fixing: A vacuum suction cup device is used for automated suction and positioning. The vacuum suction cup device is equipped with a multi-axis robotic arm. The resistance strain gauge is sequentially sucked up according to the coordinate template and adhered to the surface of the low-viscosity layer with a positioning accuracy of less than ±0.1mm. After the adhesion is completed, a laser marking device or inkjet printing device is used on the surface of the base material layer to print and mark the strain gauge product information and serial number on the preset area on the surface of the base material. The product information includes but is not limited to: product model, resistance specification, sensitivity coefficient, production batch number, production date, etc. The serial number uses a unique number, such as a barcode or QR code, to achieve one-to-one correspondence. The font height of the marked content is preferably 1mm to 3mm to ensure clarity. This greatly improves the accuracy and consistency of the resistance strain gauge positioning, reduces errors caused by human operation, ensures that each resistance strain gauge can be accurately placed in the predetermined position, provides a good foundation for subsequent testing and use, and facilitates subsequent quality traceability;

[0041] S3. Quality Inspection: The fixed resistance strain gauges are verified for their arrangement accuracy and integrity through optical inspection equipment. The optical inspection equipment can quickly scan the resistance strain gauges on the entire base material layer to detect whether the resistance strain gauges are offset or damaged. Through optical inspection, unqualified products can be discovered and eliminated in a timely manner to ensure that the resistance strain gauges in every package leaving the factory meet the quality standards.

[0042] Example 4:

[0043] Please see the attached Figure 3 and attached Figure 4 , an embodiment of the present invention provides a packaging method for a resistance strain gauge packaging structure, comprising the following steps:

[0044] S1. Coordinate template setting: Manually set a standardized coordinate template and use a ruler and positioning marking tools to mark the coordinate position of the resistance strain gauge on a base material layer with a length of 120mm and a width of 60mm. Manual coordinate setting allows for more flexible adjustment based on actual conditions. This method can better meet the needs of some small-scale resistance strain gauge packaging with special size or layout requirements.

[0045] S2. Positioning and Fixing: Manual placement is used. The operator adheres the resistance strain gauge to the surface of the low-viscosity layer using tweezers according to the position marked on the coordinate template. The positioning accuracy is ≤±0.3mm. Although manual operation is relatively slow, it can better handle some complex situations and ensure the correct placement of resistance strain gauges for small-batch, high-precision packaging.

[0046] S3. Quality Inspection: The fixed resistance strain gauges are inspected for alignment accuracy and integrity using optical inspection equipment. This equipment can carefully check the alignment of the resistance strain gauges and any damaged components to ensure product quality. The inspected packaging structures are stacked layer by layer and placed in a plastic packaging box. The interior of the box is divided into two independent areas on the left and right by a fixed partition. The partition is preferably made of the same plastic injection molding. The height of the partition is slightly lower than the height of the box cavity to ensure reliable separation. The base material with the strain gauge product fixed is placed flat or upright in the first partition area of ​​the packaging box. The size of this area is designed to accommodate multiple base material panels stacked neatly. An appropriate amount of desiccant packs are placed in the second partition area, and the weight of the desiccant packs is preferably 5g to 10g to ensure that the humidity in the package is controlled within a safe range to prevent the strain gauge product from being affected by moisture and affecting its performance. Finally, the packaging box lid is closed and sealed with a snap, seal or heat seal. At the same time, an identification label is affixed to the surface of the lid. The label includes information such as the batch number, total number of products, production date and traceability QR code. The strain gauge products are fixed in an orderly manner and stored in a moisture-proof manner, which is convenient for subsequent access and quality traceability. At the same time, the packaging box has a simple structure and is suitable for mass production and transportation.

[0047] Embodiment 5:

[0048] Application of a resistance strain gauge packaging structure in an automated patch process:

[0049] In the automated patch process, when the packaged resistance strain gauge arrives at the patch equipment, the QR code scanner on the equipment first reads the QR code information on the surface of the protective layer and transmits the data to the database of the automated patch equipment. The database interacts with the motion control system of the patch equipment in real time based on the coordinate position information in the QR code. The motion control system accurately controls the motion trajectory of the patch head based on the received coordinate data, realizing the full process automation of the resistance strain gauge from packaging to placement.

[0050] During the mounting process, each time a resistance strain gauge is mounted, the system will update the coordinate data in real time to ensure the mounting accuracy of subsequent resistance strain gauges. In this way, the efficiency and accuracy of the mounting process are greatly improved, and the errors caused by manual operation are effectively reduced, providing strong guarantees for the large-scale application of resistance strain gauges in fields such as sensor manufacturing.

[0051] Example 6:

[0052] This embodiment provides a resistance strain gauge packaging structure, including:

[0053] Use a laser marking device or inkjet printer to print and label the strain gauge product information and serial number on a pre-set area on the substrate surface. Product information includes, but is not limited to, model number, resistance value, sensitivity coefficient, batch number, and production date. The serial number should be a unique number, such as a barcode or QR code, to ensure one-to-one correspondence. The font height of the labeled information should preferably be 1mm to 3mm to ensure legibility.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A resistance strain gauge packaging structure, characterized in that: include: a base material layer having a flat surface for carrying the resistance strain gauge; The low-viscosity membrane layer is distributed in an array on the surface of the base material layer and is in contact with the polymer base material of the resistance strain gauge.

2. The resistance strain gauge packaging structure according to claim 1, characterized in that: The base material layer is a hard plastic sheet or paper with a thickness of 0.1-1.0 mm.

3. The resistance strain gauge packaging structure according to claim 1, characterized in that: The low-viscosity layer is made of a silicone film or a film with a certain surface viscosity, with a thickness of 4-50 μm and a surface adhesion of 0.05-0.5 N / cm 2 , used to secure resistance strain gauges and allows non-destructive separation.

4. The resistance strain gauge packaging structure according to claim 1, characterized in that: At least one-third of the base material surface of the strain gauge product is in contact with the surface of the low-adhesion membrane layer.

5. The resistance strain gauge packaging structure according to claim 1, characterized in that: The low-adhesion membrane layer and the base material layer are fixed by glue or double-sided tape.

6. A packaging method for a resistance strain gauge packaging structure, using the resistance strain gauge packaging structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Coordinate template setting: By setting a standardized coordinate template, define the arrangement position and spacing of the resistance strain gauges on the base material layer; S2. Positioning and Fixing: Position and fix the resistance strain gauge on the surface of the low-viscosity layer according to the coordinate template, ensuring that the strain gauge product is fixed and does not deviate; S3. Quality Inspection: Use optical inspection equipment to verify the alignment accuracy and integrity of the fixed resistance strain gauges.

7. The packaging method of a resistance strain gauge packaging structure according to claim 6, characterized in that: In step S1 , a standardized coordinate template is automatically generated by a computer program, and the computer program calculates and generates a coordinate distribution based on the size of the base material layer and the preset spacing of the resistance strain gauges.

8. The packaging method of a resistance strain gauge packaging structure according to claim 6, characterized in that: In the step S1 , the standardized coordinate template is manually set, including marking the coordinate position of the resistance strain gauge on the base material layer using a ruler and a positioning marking tool.

9. The packaging method of a resistance strain gauge packaging structure according to claim 6, characterized in that: In step S2, a vacuum suction cup device is used for automated suction and positioning. The vacuum suction cup device is equipped with a multi-axis robotic arm, which sequentially sucks the resistance strain gauge according to the coordinate template and adheres it to the surface of the low-viscosity layer with a positioning accuracy of less than ±0.1 mm.

10. The packaging method of a resistance strain gauge packaging structure according to claim 6, characterized in that: In step S2, a manual placement method is adopted, and the operator uses tweezers to adhere the resistance strain gauge to the surface of the low mucosal layer according to the position marked on the coordinate template, with a positioning accuracy of ≤±0.3mm.

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