Monofilament drawing die
By designing a single-filament drawing die, the problems of uncertain fiber position and low preparation efficiency in single-fiber/matrix interface performance testing were solved, efficient and accurate sample preparation was achieved, and the reliability of test results was ensured while saving resources.
Patent Information
- Application Number
- CN202422637947.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the existing technology, in the single fiber/matrix interface performance test, the sample preparation process has problems such as inconsistent fiber length, uncertain position, and difficult to control manual operation, resulting in inaccurate and unreliable test results, low preparation efficiency and high cost.
A single-filament drawing die was designed, consisting of an upper top plate, a lower bottom plate, and a clamping plate connected by bolts. The clamping plate had a serrated structure, which ensured that the single fiber was located at the center of the cement-based composite matrix. A 16 mm × 16 mm × 3 mm cubic test block was prepared by layered casting, simplifying the die installation and disassembly process.
The accurate positioning and embedding of single fibers in the cement-based composite matrix are achieved, ensuring the accuracy and reliability of the test results, improving preparation efficiency, reducing costs, and minimizing resource waste, in line with environmental protection concepts.
Smart Images
Figure CN223442474U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of sample mould, specifically is a single filament drawing mould. BACKGROUND
[0002] Single fiber / matrix interfacial adhesion property testing is one of the important methods to evaluate the performance of composite materials, and the preparation of the sample is a key step in the test. However, due to the difficulties in the sample preparation process, it often brings many obstacles to the test and subsequent analysis. Therefore, it is of great significance to develop a test mold.
[0003] First of all, using a specially designed test mold can ensure that the sample with consistency and accurate size is prepared, which is crucial to the reliability and repeatability of the test results. The test mold can accurately control the size, shape and surface features of the sample, so as to eliminate the test error caused by the inconsistency of the sample.
[0004] Then, using appropriate test mold can greatly improve the efficiency of the test. Compared with manual preparation of sample, using mold can realize batch production, reduce preparation time and improve work efficiency. This is particularly important for laboratories that conduct adhesion property testing on a large scale or for a long time.
[0005] Finally, by designing and manufacturing suitable test mold, the cost of test can be effectively reduced. Although the manufacture of mold may require certain cost investment, in the long run, through improving the test efficiency and reducing the labor cost, the test cost can be reduced.
[0006] In the current single fiber / matrix interfacial property test, the matrix is usually prepared in sheet form, and then cut into the required size of sample according to the needs. Figure 1 The specific preparation process is as follows: first, a "U" shaped strip (indicated as "middle mold" in the figure) is clamped between two blocks (indicated as "bottom mold") and fixed with screws. Then a single fiber is fixed vertically on the bottom. Then, two upper molds are placed above the bottom and fixed with screws. Finally, the gap in the assembled mold is filled with adhesive matrix. Vibration method is used to eliminate large pores and compress the matrix.
[0007] In the traditional sample preparation process, the preparation of the matrix is usually first, and the matrix is usually prepared in sheet form, and then cut into the required size of sample according to the needs. In the process of embedding fiber, there are a series of problems: first, manual operation can not ensure that the length of each fiber is exactly 3mm, which may lead to inaccuracy of test results; second, it is difficult to judge whether the fiber is in the center of the matrix by naked eye observation, which may also affect the reliability of the test results.
[0008] Therefore, how to provide a single filament drawing die has become a technical problem that technicians in the field urgently need to solve. Content of the Utility Model
[0009] To solve at least one technical problem in the background art, the utility model provides a single filament drawing die which can completely prepare a cubic cement-based composite material test block with a thickness of 16mm*16mm*3mm, ensures that the embedding depth of a single fiber in the cement-based composite material matrix is 3mm, ensures that the single fiber is located at the center position of the cement-based composite material matrix, and the mold installation and dismounting process is simple, time-saving and labor-saving.
[0010] To achieve the above purpose, the utility model provides a single filament drawing die which comprises an upper top plate, a lower bottom plate and a clamping plate, the lower bottom plate is clamped on both sides of the bottom of the clamping plate, the upper top plate is clamped on both sides of the top of the clamping plate, the upper top plate and the lower bottom plate are connected through first bolts, the lower bottom plate and the clamping plate are connected through second bolts, and the clamping plate is a sawtooth structure.
[0011] Further, the clamping plate comprises a beam plate and a plurality of partition plates, the plurality of partition plates are connected at the top of the beam plate, gaps are arranged between adjacent partition plates, and a single fiber is adhered in each gap.
[0012] Further, the gap is filled with a matrix.
[0013] Further, the partition plate is provided with 10.
[0014] Further, the size of the gap space is 16mm*16mm*3mm.
[0015] The utility model has the advantages of:
[0016] The utility model can completely prepare a cubic cement-based composite material test block with a thickness of 16mm*16mm*3mm, ensures that the embedding depth of a single fiber in the cement-based composite material matrix is 3mm, ensures that the single fiber is located at the center position of the cement-based composite material matrix, and the mold installation and dismounting process is simple, time-saving and labor-saving. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic view of the prior art;
[0018] Figure 2 It is an exploded view of the utility model;
[0019] Figure 3 It is a structural schematic view of the upper top plate of the utility model;
[0020] Figure 4 It is a structural schematic view of the lower bottom plate of the utility model;
[0021] Figure 5 It is the structure schematic view of the clamping plate of the utility model.
[0022] Among them, 1 - upper roof, 2 - lower bottom plate, 3 - clamping plate, 4 - first bolt, 5 - second bolt, 6 - fiber, 31 - beam plate, 32 - partition plate. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0024] It should be noted that the terms "first", "second" and the like in the description and claims of the application and the above drawings are used to distinguish similar objects, not necessarily to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0025] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0026] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms may also be used to indicate other meanings, for example, the term "upper" may also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.
[0027] In addition, the terms "mount", "set", "provided with", "connect", "connect", "socket" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0028] To achieve the above object, as shown in Figures 2-5 The utility model provides a monofilament drawing die, include: upper roof 1, lower bottom plate 2 and clamping plate 3, the lower bottom plate 2 is clamped in the both sides of the bottom of clamping plate 3, the upper roof 1 is clamped in the both sides of the top of clamping plate 3, the upper roof 1 is connected with lower bottom plate 2 through first bolt 4, the lower bottom plate 2 and clamping plate 3 are connected through second bolt 5, the clamping plate 3 is sawtooth structure, not only guarantee the dimensional integrity of each matrix, and provide the guarantee for the fiber 6 accurately in matrix. The thickness of clamping plate 3 is 3mm, can solve the situation of uncertain fiber embedding depth from the source.
[0029] The bolt connection between the upper roof 1, the lower bottom plate 2 and the clamping plate 3 makes the assembly and disassembly of the mold simple and operable. The upper roof and the lower bottom plate together ensure the basic size of the test piece. The separation of the upper roof and the lower bottom plate not only provides a convenient space for adhering single fibers before pouring the test piece, but also allows layered construction during pouring of the test piece, thereby ensuring that the test piece fills the mold as much as possible and ensuring the integrity of the test piece. The sawtooth-shaped clamping plate ensures the correct positioning of the single fiber in the cement-based matrix. The sawtooth-shaped clamping plate separates the matrix containing the single fiber, avoiding the cutting process after sheet preparation, and also reducing the size error caused by uneven cutting. The mold has 10 separation plates, which can produce 9 test pieces at a time, and the batch production not only saves time but also reduces resource waste caused by small molds and large mixing containers.
[0030] The clamping plate includes a beam plate 31 and a plurality of separation plates 32 connected to the top of the beam plate 31, and gaps are provided between adjacent separation plates 32, and each gap has a single fiber adhered therein. The gap is filled with a matrix. The beam plate 31 is provided with a through hole.
[0031] Further optimization of the technical solution, the size of the gap space is 16mm×16mm×3mm.
[0032] The utility model has the following advantages:
[0033] a) complete preparation of test piece:
[0034] Through the designed mold structure, the cubic cement-based composite material test block with a thickness of 16mm*16mm*3mm can be completely prepared, and the problem of inconsistent size in the test piece preparation process is solved.
[0035] b) Ensure the depth and position of fiber embedding:
[0036] The design of the middle plate ensures that the embedding depth of a single fiber in the cement-based composite material matrix is 3mm, and is located at the center position of the matrix, ensuring the accuracy and reliability of the test.
[0037] c) Simple mold installation and disassembly process:
[0038] The mold structure of the top plate, the middle plate and the bottom plate is adopted, and the mold is connected through bolts, so that the installation and disassembly process of the mold becomes simple, time-saving and labor-saving, and the work efficiency is improved.
[0039] d) Ensure the integrity of the test piece:
[0040] The separation design of the bottom plate and the top plate provides a convenient space before pouring the test piece, ensures that the test piece fills the mold, and ensures the integrity of the test piece.
[0041] e) Improve production efficiency:
[0042] The mold can prepare 9 test pieces at a time, realizes batch production, saves time and improves production efficiency.
[0043] f) Reduce resource waste:
[0044] Batch production of test pieces can reduce resource waste caused by too small mold and too large mixing container, in line with the concept of saving resources and environmental protection.
[0045] The working process of the utility model is as follows:
[0046] Firstly, the lower bottom plate and the clamping plate are installed, and a single fiber is placed in the middle position of the serrated gap of the clamping plate by means of a tape measure, and is fixed by using transparent tape, which is convenient for the next process;
[0047] Then, the cement-based matrix is poured into the lower half of the serrated gap of the clamping plate, which needs to be placed on the vibration table and vibrated for 30 times. Then the upper top plate is installed, and the cement-based matrix is poured again until the matrix fills the mold, and the vibration times are still set to 30 times. The purpose of this layered pouring method is to ensure the integrity and density of the test piece as much as possible.
[0048] Finally, after waiting for 48 hours for the cement-based matrix to solidify in the mold, the upper platen is removed, and then the transparent tape used to hold the fibers is slowly moistened with water, causing it to automatically fall off. This minimizes the disturbance to the fiber-matrix interfacial bond strength caused by tearing the tape. Finally, the lower platen is removed, and the formed specimen is removed from the jig.
[0049] The above merely describes preferred embodiments of the present application, and is not intended to limit the technical scope of the present application in any way. Any minor modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present application still falls within the technical scope of the present application.
Claims
1. A monofilament drawing die, characterized in that: include: An upper top plate, a lower bottom plate and a splint, the lower bottom plate is clamped on both sides of the bottom of the splint, the upper top plate is clamped on both sides of the top of the splint, the upper top plate and the lower bottom plate are connected by a first bolt, the lower bottom plate and the splint are connected by a second bolt, and the splint is a serrated structure.
2. A monofilament drawing die according to claim 1, characterized in that: The splint includes a beam plate and a plurality of partition plates, wherein the plurality of partition plates are connected to the top of the beam plate, and gaps are provided between adjacent partition plates, and a single fiber is adhered in each of the gaps.
3. A monofilament drawing die according to claim 2, characterized in that: The gap is filled with a matrix.
4. A monofilament drawing die according to claim 2 or 3, characterized in that: There are 10 partition plates.
5. A monofilament drawing die according to claim 4, characterized in that: The dimensions of the gap space are 16 mm x 16 mm x 3 mm.