Mold for rapid installation of samples

Abstract

This utility model relates to the field of electronic manufacturing testing, and more specifically, to a mold for rapid sample installation, comprising a housing and an elastic component. The housing is a box-shaped structure with an opening on its upper side. The housing includes a bottom plate and a first sidewall and a second sidewall disposed opposite each other. The elastic component is disposed within the housing and includes a first component and a second component. The first component is connected to the first sidewall, and one end of the second component is connected to the first component, while the other end is a free end. The free end of the second component forms a clamping structure with the second sidewall. The second component can undergo elastic deformation under external force. By setting the elastic component within the housing and utilizing the clamping structure formed by the free end of the second component and the second sidewall, the sample is clamped and fixed, ensuring that the sample is placed vertically. This mold allows for rapid sample installation with only simple movements, improving work efficiency and promoting automated mechanical operation.

Description

Technical Field

[0001] This utility model relates to the field of electronic manufacturing testing, and more specifically, to a mold that can quickly install samples. Background Technology

[0002] PCB boards are one of the key components in electronic assemblies. With the rapid development of electronic science and technology, the application fields of electronic products are constantly expanding, which has elevated the status of the PCB board manufacturing industry. Given that the reliability of PCB boards directly affects the quality of electronic products, improving PCB board quality has become a hot topic in the industry. The trend towards intelligent and portable electronic products is driving PCB board manufacturing technology towards multi-layering and integration, making PCB board manufacturing processes increasingly complex. If a quality problem occurs in any stage, it will lead to the scrapping of the PCB board and a reduction in yield. Therefore, it is necessary to use certain testing technologies to determine the quality of manufactured products in order to maintain the company's market competitiveness. Currently, there are many PCB board testing methods, but the most intuitive, economical, accurate, and reliable is cross-sectional inspection technology. This technology has become a routine product quality monitoring and fault analysis technique for PCB board manufacturers.

[0003] Sectioning inspection technology is a sample testing method that uses a special liquid resin to encapsulate and solidify the sample, followed by grinding, polishing, and observation. The process includes sampling, resin application, curing, grinding, polishing, microscopic observation, and photography. Finally, it obtains data such as the cross-sectional morphology, crack size, and dimensions of the sample. It is a commonly used sample preparation and testing method for observing the cross-sectional microstructure of samples. Therefore, sample preparation is a crucial step in sectioning inspection technology, including sampling, resin application, curing, and grinding. Sampling involves cutting the sample from a PCB board; resin application involves placing the sample in a mold and filling it with resin material; curing involves using a UV lamp to cure the resin material; and grinding involves coarse and fine grinding of the prepared sample to facilitate microscopic observation. To ensure the scientific validity of the test data, the sample must be vertically fixed in the mold before resin application and curing. Current molds are rectangular box-shaped structures, requiring double-sided tape to be applied to one side of the sample before it is adhered to the inner wall of the mold. This type of mold is cumbersome, inefficient, and not conducive to automated mechanical operation. Utility Model Content

[0004] The present invention aims to overcome at least one of the defects (deficiencies) of the prior art and provide a mold that can quickly install samples, thereby solving the problems that existing molds are cumbersome to operate, inefficient, and not conducive to mechanical automation.

[0005] The technical solution adopted by this utility model is a mold for quick sample installation, including a shell and an elastic component. The shell is a box-shaped structure with an opening on its upper side. The shell includes a bottom plate, a first side wall, and a second side wall arranged opposite to each other. The elastic component is disposed inside the shell and includes a first component and a second component. The first component is connected to the first side wall, and one end of the second component is connected to the first component, while the other end is a free end. The free end of the second component forms a clamping structure with the second side wall. The second component can generate elastic deformation under the action of external force.

[0006] By incorporating an elastic component, the free end of the second component forms a clamping structure with the second sidewall, clamping and fixing the sample while ensuring it adheres tightly to the second sidewall, thus guaranteeing the sample remains vertically fixed within the mold. Compared to existing molds, this mold only requires placing the sample between the second component and the second sidewall and applying downward force to quickly install the sample into the mold. The operation is simple and easy to perform, improving the efficiency of sample placement and promoting automated operation.

[0007] Furthermore, the first component is detachably connected to the first sidewall.

[0008] The housing is made of transparent acrylic material, and the elastic component is a foldable plastic sheet. Because they are made of different materials, they must be manufactured and assembled separately. Furthermore, the first component is detachably connected to the first sidewall; if either the housing or the elastic component is damaged, only the damaged component needs to be replaced.

[0009] Furthermore, a slot is provided on the first sidewall, and the first component is disposed in the slot.

[0010] A slot is provided on the first sidewall. Inserting the first component into the slot connects the first sidewall and the first component. The slot connection structure is simple and easy to operate. When it is necessary to replace the housing or elastic component, simply pull the first component out of the slot to disassemble the housing and elastic component.

[0011] Furthermore, the free end of the second component is provided with a planar clamping part.

[0012] Without a planar clamping part, the free end of the second component makes point or line contact with the sample, resulting in a small contact area. Force is applied only at a specific point or along a line on the sample, leading to uneven clamping force and potentially causing sample tilting, requiring adjustment. With a planar clamping part, the contact between the free end and the sample becomes surface contact. This not only makes clamping more stable but also prevents sample tilting due to uneven clamping force. This improves sample installation speed while ensuring the sample remains vertical.

[0013] Furthermore, the middle section of the second sidewall is provided with a stepped thickening structure, which includes a lower bearing section and an upper clearance section. The thickness of the lower bearing section is greater than the thickness of the upper clearance section. The side of the lower bearing section facing the first sidewall is the bearing surface, which is a vertical surface. The planar clamping part and the bearing surface form a clamping structure.

[0014] The bearing surface forms a clamping structure with the planar clamping part. After installation, one side of the sample is in close contact with the bearing surface. Therefore, the bearing surface must be set as a vertical surface to ensure that the sample is placed vertically after installation. The upper clearance section is used to avoid tools. The sample is small in size and needs to be clamped with tools such as tweezers or mechanical clamps. Setting an upper clearance section can effectively solve the problem of tool interference. On the other hand, setting a clearance section allows the upper part of the sample and the thickened structure to also be filled with potting material, thereby making the sample more stable after potting and curing. If there is no clearance section, the sample will be in close contact with the thickened structure, and there will be no potting material filling between the side of the sample facing the thickened structure and the thickened structure. The width of the thickened structure can be set according to the length of the sample. It is necessary to ensure that there is sufficient contact area between the bearing surface and the sample. At the same time, its width should be less than the length of the sample, so that after the sample is installed, both ends of the sample extend beyond the sides of the thickened structure, so that both ends of the sample after potting can also be filled with potting material, further increasing the contact area between the sample and the potting material.

[0015] Furthermore, the thickened structure extends upward from the upper surface of the base plate, and its height is the vertical distance from the upper surface of the base plate to the top plane of the second side wall; the height of the lower bearing section accounts for 40%-60% of the height of the thickened structure.

[0016] First, if the height of the lower support section of the thickened structure is too low, it will affect the structural strength of the second sidewall, potentially leading to cracking during subsequent curing and grinding. Second, if the lower support section is too low, the support surface will be too low, resulting in a small contact area between the sample and the support surface, making it impossible to ensure the sample's vertical placement. Conversely, if the lower support section is too high, it will compress the space of the upper clearance section, increasing the risk of fixture interference.

[0017] Furthermore, the second component is inclined relative to the bearing surface, and the included angle between it and the bearing surface is 30°-70°.

[0018] Setting the angle between the second component and the bearing surface to 30°-70° allows the second component to generate an ideal combination of horizontal and vertical forces during elastic deformation, optimizing the clamping force. If the angle is too large, the insertion resistance of the sample will be too high; if the angle is too small, the clamping force on the sample will be insufficient. On the other hand, setting the angle between the second component and the bearing surface to 30°-70° creates a progressive guide channel between the second component and the bearing surface, facilitating sample insertion. If the angle is too small, the sample may be easily blocked by the top surface of the lower bearing section.

[0019] Furthermore, the angle between the planar clamping part and the bearing surface shall not exceed 5°.

[0020] The planar clamping part is designed to increase the clamping area. The angle between the planar clamping part and the bearing surface is less than 5°. When the sample is inserted, the planar clamping part achieves self-alignment through slight elastic deflection, resulting in surface contact with the sample. However, if the angle between the planar clamping part and the bearing surface is too large, the planar clamping part cannot achieve self-alignment through slight elastic deflection, and the contact area between it and the sample is too small, or even point contact or line contact.

[0021] Furthermore, the shell has a cuboid structure, and the first and second sidewalls are a pair of longer sidewalls of the shell.

[0022] When using this mold, the sample is placed sideways inside the mold. Setting the shell as a cuboid structure optimizes space utilization and saves potting material. The longer sidewalls of the shell cover the length of the sample and need to be slightly longer than the length of the sample. The shorter sidewalls only need to cover the thickness of the sample and meet the requirements of the elastic components. Setting them shorter can save potting material.

[0023] Furthermore, the bottom plate of the housing is provided with multiple protrusions at intervals.

[0024] The multiple raised strips spaced apart on the base plate are for supporting the sample. During the injection process, the injection material can flow from between the raised strips or from the gaps between the raised strips and the side plate, so that both sides of the sample are filled with the injection material.

[0025] Compared with existing technologies, the advantages of this utility model are as follows: By setting an elastic component inside the shell, a clamping structure is formed by the free end of the second component and the second sidewall to clamp and fix the sample, ensuring that the sample is placed vertically. Compared with existing molds, this mold only requires placing the sample between the second component and the second sidewall and applying downward force to quickly install the sample into the mold. The action is simple and easy to operate, improving the efficiency of placing the sample into the mold. Moreover, it can be completed mechanically, promoting automated operation. The shell and the elastic component are made of different materials and need to be manufactured and installed separately. A slot is set on the first sidewall, and the first component is inserted into the slot to connect the shell and the elastic component. The structure is simple, the operation is convenient, and it is easy to replace the shell or the elastic component. The free end of the second component is provided with a flat clamping part to increase the contact area with the sample, making the clamping more secure. At the same time, it can also make the force on the sample more uniform and prevent tilting caused by uneven force. The middle section of the second sidewall features a thickened structure to increase its strength. The second sidewall has a certain width to ensure surface contact with the sample. The width of the second sidewall is less than the length of the sample, allowing the sample to extend beyond the thickened structure at both ends after installation, thus increasing the contact area between the potting material and the sample. The thickened structure is stepped, comprising a lower support section and an upper clearance section. The lower support section forms a clamping grip with the planar clamping part and must have a certain height to ensure sufficient contact area between the support surface and the sample, preventing insecure clamping or sample tilting due to insufficient contact area. The upper clearance section addresses tool interference issues during sample clamping and further increases the contact area between the potting material and the sample, resulting in a more stable cured sample. The second component is inclined relative to the bearing surface, with an included angle of 30°-70°. This optimizes the clamping force, preventing excessive insertion resistance due to an excessively large angle or insufficient clamping force due to an excessively small angle. Furthermore, it creates a progressive guide channel between the second component and the bearing surface, facilitating sample insertion. Multiple raised strips are spaced apart on the bottom plate of the housing to facilitate the flow of the potting compound. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the present invention.

[0027] Figure 2 This is a cross-sectional view of the present invention.

[0028] Figure 3 This is a structural diagram of the shell.

[0029] Figure 4 This is a structural diagram of the shell from another angle.

[0030] Figure 5 This is a cross-sectional view of the shell.

[0031] Figure 6 This is a longitudinal sectional view of the shell.

[0032] Figure 7 This is an enlarged view of A.

[0033] Figure 8 This is a structural diagram of an elastic component.

[0034] Figure 9 This is a structural diagram of the present invention in use. Detailed Implementation

[0035] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0036] like Figure 1 , Figure 2 As shown, a mold for quickly installing samples includes a housing 1 and an elastic component 2. The housing 1 is a box-shaped structure with an opening on its upper side. The housing 1 includes a base plate 13 and a first sidewall 11 and a second sidewall 12 disposed opposite to each other. The elastic component 2 is disposed inside the housing 1 and includes a first component 21 and a second component 22. The first component 21 is connected to the first sidewall 11. One end of the second component 22 is connected to the first component 21, and the other end is a free end. The free end of the second component 22 forms a clamping structure with the second sidewall 12. The second component 22 can generate elastic deformation under the action of external force.

[0037] Specifically, such as Figures 3-6As shown, the shell 1 is a cuboid box structure. The first sidewall 11 and the second sidewall 12 are the longer pair of sidewalls of the shell 1. A slot 14 is provided in the middle section of the first sidewall 11, and a thickened structure 15 is provided in the middle section of the second sidewall 12. The ratio of the width D of the thickened structure 15 to the length L of the second sidewall 12 is 0.4-0.6. The thickened structure 15 extends upward from the upper surface of the base plate 13, and its height H is the vertical distance from the upper surface of the base plate 3 to the top plane of the second sidewall 12. The thickened structure 15 is stepped, including a lower bearing section 151 and an upper clearance section 152. The thickness of the lower bearing section 151 is greater than the thickness of the upper clearance section 152, and the height H1 of the lower bearing section 151 accounts for 40%-60% of the height H of the thickened structure 15. The side of the lower bearing section 151 facing the first sidewall 11 is the bearing surface 1511, and the bearing surface 1511 is a vertical surface. Two protrusions 131 are spaced apart on the upper surface of the base plate 13 to support the sample 3, allowing the potting material to flow from below the sample and increasing flowability.

[0038] like Figure 8 As shown, the elastic component 2 is roughly inverted V-shaped, including a first component 21 and a second component 22. Both the first component 21 and the second component 22 are sheet-like structures. The first component 21 is inserted into the slot 14, thereby connecting the housing 1 and the elastic component 2 together. One end of the second component 22 is connected to the first component 21 by an arc transition, and the other end is a free end. The free end of the second component 22 is provided with a planar clamping part 221 to increase the clamping area. The planar clamping part 221 and the bearing surface 1511 form a clamping structure. Figure 7 As shown, to avoid excessive insertion resistance of the sample 3 due to an excessively large angle α between the second component 22 and the bearing surface 1511, or insufficient clamping force due to an excessively small angle, the angle α between the second component 22 and the bearing surface 1511 is set to 30°-70°. Furthermore, setting an angle of 30°-70° between the second component 22 and the bearing surface 1511 can form a progressive guide channel, facilitating the insertion of the sample 3. The angle α1 between the planar clamping part 221 and the bearing surface 1511 does not exceed 5° to ensure surface contact between the planar clamping part 221 and the sample 3. Of course, the angle α1 between the planar clamping part 221 and the bearing surface 1511 can also be 0°, in which case the planar clamping part 221 is parallel to the bearing surface 1511.

[0039] like Figure 9 As shown, when using this mold, simply move the sample 3 between the second component 22 and the bearing surface 1511, press down, and the sample 3 can be installed inside the mold. The planar clamping part 221 can achieve self-alignment through slight elastic deflection, and achieve surface contact with the sample 3, thereby ensuring stable clamping and vertical placement of the sample 3.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A mold capable of quickly installing a sample, comprising a shell and an elastic component, the shell being a box-like structure with an open upper side, the shell comprising a bottom plate, a first sidewall and a second sidewall arranged opposite to each other; the elastic component being arranged in the shell, characterized in that, The elastic component includes a first component and a second component. The first component is connected to a first sidewall. One end of the second component is connected to the first component, and the other end is a free end. The free end of the second component forms a clamping structure with the second sidewall. The second component can produce elastic deformation under the action of external force.

2. The mold for rapid sample installation according to claim 1, characterized in that, The first component is detachably connected to the first sidewall.

3. The mold for rapid sample installation according to claim 2, characterized in that, A slot is provided on the first side wall, and the first component is disposed in the slot.

4. The mold for rapid sample installation according to any one of claims 1 to 3, characterized in that, The free end of the second component is provided with a planar clamping part.

5. The mold for rapid sample installation according to claim 4, characterized in that, The middle section of the second sidewall is provided with a stepped thickening structure, which includes a lower bearing section and an upper clearance section. The thickness of the lower bearing section is greater than the thickness of the upper clearance section. The side of the lower bearing section facing the first sidewall is the bearing surface, which is a vertical surface. The planar clamping part forms a clamping structure with the bearing surface.

6. The mold for rapid sample installation according to claim 5, characterized in that, The thickened structure extends upward from the upper surface of the base plate, and its height is the vertical distance from the upper surface of the base plate to the top plane of the second side wall; the height of the lower bearing section accounts for 40%-60% of the height of the thickened structure.

7. The mold for rapid sample installation according to claim 6, characterized in that, The second component is inclined relative to the bearing surface, and the included angle between it and the bearing surface is 30°-70°.

8. The mold for rapid sample installation according to claim 7, characterized in that, The angle between the flat clamping part and the bearing surface shall not exceed 5°.

9. The mold for rapid sample installation according to any one of claims 1 to 3, characterized in that, The shell has a cuboid structure, and the first and second sidewalls are the longer pair of sidewalls of the shell.

10. The mold for rapid sample installation according to claim 9, characterized in that, The bottom plate of the housing is provided with multiple raised strips at intervals.

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