CN112816305A - Mold for manufacturing structural bodies with same structural surface appearance and preparation method thereof - Google Patents
Mold for manufacturing structural bodies with same structural surface appearance and preparation method thereof Download PDFInfo
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- CN112816305A CN112816305A CN202110163715.9A CN202110163715A CN112816305A CN 112816305 A CN112816305 A CN 112816305A CN 202110163715 A CN202110163715 A CN 202110163715A CN 112816305 A CN112816305 A CN 112816305A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052602 gypsum Inorganic materials 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000012876 topography Methods 0.000 claims 4
- 238000012360 testing method Methods 0.000 description 14
- 239000011435 rock Substances 0.000 description 13
- 210000001503 joint Anatomy 0.000 description 9
- 239000002002 slurry Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mould for manufacturing structural bodies with the same structural surface appearance and a preparation method thereof.A boss strip arranged along the corresponding length direction is fixed on the end surface at the periphery of a bottom plate, and a positioning slot is arranged on the upper surface of the bottom plate along the central line of the bottom plate; the inserting plate is inserted into the positioning slot in a vertical manner; one side of the bottom ends of the four side plates is internally provided with strip-shaped grooves matched with the boss strips along the corresponding length direction, and the strip-shaped grooves are correspondingly spliced with the boss strips one by one; the second structure face template aligns with the first structure face template and is fixed on the face of the other side of the inserting plate in parallel, and the clamping strip fixed at the top end of the second structure face template is in one-to-one corresponding inserting connection with the clamping groove structure fixed at the top end of the first structure face template. The invention discloses a mold for manufacturing structural bodies with the same structural surface appearance and a preparation method thereof.
Description
Technical Field
The invention relates to the technical field of manufacturing of structural body pouring molds with the shape of a rock structural surface, in particular to a mold for manufacturing structural bodies with the same shape of the structural surface and a preparation method thereof.
Background
The engineering rock mass always comprises a large number of joints of different scales, and the occurrence of the joints influences the integrity of the rock mass and reduces the strength of the rock mass. The joint is composed of two surfaces made of the same or different materials and filling materials between the two surfaces, and has certain mechanical properties such as compressive strength, shearing strength and the like. The mechanical properties of the joints influence the mechanical properties of the rock mass to a certain extent, and further influence the safety and stability of the engineering rock mass. Therefore, the method has important theoretical and practical research values for researching the shear mechanical properties of the rock joints and the basic phenomena and rules in the shearing process.
In order to understand the influence of stress conditions (normal load and boundary conditions) on the shear strength of a structural body, it is necessary to perform multiple tests on the structural body with the same shape under different stress conditions, and it is difficult to obtain the structural body with the same shape in nature, and the shape of a structural surface obtained by brazilian splitting in a laboratory is random, so that a mold and a method for manufacturing the structural body with the same shape of the rock structural surface are necessary.
The existing mould for manufacturing the structural body with the same rock structural surface appearance has the following defects: the method comprises the following steps that (1) the problem of seepage prevention is not considered in a mould, and partial slurry flows out along gaps around the mould in the sample pouring process, so that the upper surface of a poured structure body is sunken, and the sample pouring fails; (2) the measure of fixed structure face template is not in place, and most be with the template through the mode of slot with structure face template grafting in the slot of curb plate, this kind of grafting mode can lead to the structure face template to vibrate closely in real time on the shaking table, easily appears rocking from top to bottom to lead to the sample to pour the failure. Therefore, the problem to be solved by those skilled in the art is how to provide a mold capable of manufacturing a structural body with the same shape of a rock structural plane and a preparation method thereof.
Disclosure of Invention
In view of the above, the invention provides a mold for manufacturing structural bodies with the same structural surface morphology and a manufacturing method thereof, which can reduce leakage of casting materials, ensure stability of a structural surface template in a vibration process, avoid vertical shaking, and prevent relative dislocation of the structural surface template, so that the structural bodies manufactured by the method can realize accurate repeated engraving of the structural surface morphology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the square bottom plate is provided with boss strips arranged along the corresponding length direction, and the upper surface of the bottom plate is provided with a slot along the central line of the bottom plate;
the inserting plate is perpendicular to the bottom plate and inserted into the positioning slot;
the side plates are four and are vertically erected on the bottom plate, strip-shaped grooves matched with the boss strips are formed in one side of the bottom ends of the four side plates inwards along the corresponding length direction, the strip-shaped grooves are in one-to-one corresponding insertion with the boss strips, every two adjacent side plates are connected, one pair of the side plates which are fixed relatively is parallel to the plate surface of the inserting plate, the other pair of the side plates which are fixed relatively is in one-to-one correspondence with the two sides of the inserting plate and is in butt joint with the two sides of the inserting plate, and the four side plates, the bottom plate and the inserting plate form two pouring cavities;
the first structural surface template is fixed on the plate surface on one side of the inserting plate in parallel, and a clamping groove structure is fixed at the top end of the first structural surface template;
the second structure face template, the second structure face template with first structure face template aligns and parallel fixation is in the picture peg with on the face of the opposite side of first structure face template, simultaneously the top of second structure face template is fixed with the card strip, the card strip with draw-in groove structure one-to-one is pegged graft, the card strip inserts in the draw-in groove of draw-in groove structure.
The lateral surfaces of the periphery of the bottom plate are all fixed with boss strips arranged along the corresponding length direction, one side of the bottom end of the side plate is internally provided with strip-shaped grooves matched with the boss strips along the corresponding length direction, the side plate is vertically erected on the bottom plate in a manner that the boss strips are correspondingly inserted into the strip-shaped grooves, and the combination of the strip-shaped grooves and the boss strips can lead the seepage path of slurry in a pouring cavity to be bent and reduce the seepage amount of the slurry, so that the quality of the prepared structural body with the same structural surface appearance is improved, and the accuracy of the structural surface of a rock mass for testing the obtained data is improved;
meanwhile, the first structural surface template and the second structural surface template are respectively fixed on the panels at two sides of the inserting plate, so that the first structural surface template and the second structural surface template are fixed on the bottom plate through the inserting plate, the strength is improved after the two structural surface templates are combined with the steel bottom plate, the structural surface templates can be prevented from being deformed due to multiple pouring, the precision of repeated carving of the structural surface can be ensured, and the test accuracy is ensured;
according to the invention, the clamping groove structure is fixed at the top end of the first structural surface template, the clamping strip is fixed at the top end of the second structural surface template, and the two structural surface templates are fixed in an inserting manner through the clamping strip and the clamping groove structure, so that when the invention is used, the two structural surface templates can be prevented from relative dislocation, and therefore, the accurate repeated engraving of the structural surface appearance can be realized, and the accuracy of the test is improved.
Preferably, the positioning slot is trapezoidal, and the width of the notch of the positioning slot is smaller than the width of the bottom of the positioning slot.
According to the invention, the trapezoidal positioning slot positioning inserting plate with the slot opening width smaller than the slot bottom can ensure the stability of inserting the inserting plate into the positioning slot, so that the stability of two structural surface templates fixed on the inserting plate is improved, and the accurate repeated engraving of the structural surface appearance is ensured.
Preferably, the material of the insert plate is a steel plate.
Because the steel plate has higher strength, the steel plate is used as the inserting plate to fix the structural surface template, so that the problem of structural surface template deformation caused by repeatedly pouring samples for many times can be solved.
Preferably, anti-leakage slots and inserting strips are respectively formed in two sides of each side plate along the height of the side plate, and the anti-leakage slots of each side plate are in one-to-one corresponding insertion connection with the inserting strips of the adjacent side plates.
The slot of each side plate and the inserting strip of the adjacent side plate are uniformly and correspondingly inserted, so that the problem of dislocation between the adjacent side plates in the vibration process of the invention is solved, and the accurate repeated engraving of the structural surface appearance is realized.
Preferably, the side parts of the outer walls of the pair of side plates which are fixed relatively are all fixed with lug plates, each lug plate is provided with a through hole, a bolt penetrates through the through hole which is formed in each lug plate which is fixed relatively, and two ends of the bolt are fastened on the lug plates through nuts.
According to the invention, each pair of the ear plates which are relatively fixed are connected through the bolt and the nut, so that the side plates which are relatively fixed and positioned between each pair of the ear plates can be clamped, and because each two adjacent side plates are spliced through the anti-leakage slot and the inserting strip, the connection stability of the four side plates can be improved, and meanwhile, the clamping force of the side plates to the inserting plate can be improved, so that the quality of the structural body with the same structural surface appearance can be improved, and the accuracy of the structural body used for testing the obtained data can be improved.
Preferably, the ear panel is fixed at a position intermediate the side panels along the height.
The lug plate is arranged at the middle position along the height, so that the lug plate is matched and connected with the bolt and the nut to generate uniform constraint force on the side plate, the quality of a poured structural body can be ensured, and the structural surface appearance of the structural body can be accurately re-engraved.
Preferably, the number of the clamping groove structures at the top of the first structural surface template is two, and the two clamping groove structures are fixed at the top end of the first structural surface template at intervals.
The two clamping groove structures at the top of the first structural surface template are symmetrically fixed at the top of the first structural surface template, so that the first structural surface template and the second structural surface template can be accurately aligned by matching the clamping groove structures and the clamping strips, and the quality of the prepared structural body with the same structural surface appearance can be improved.
Preferably, the number of the clamping strips at the top of the second structure surface template is two, and the two clamping strips are fixed at the top end of the second structure surface template at intervals.
The two clamping strips at the top of the second structural surface template are symmetrically fixed at the top of the second structural surface template, so that the stability of connecting the first structural surface template and the second structural surface template can be improved through the matching of the clamping groove structures and the clamping strips.
Preferably, the clamping groove structure of the structural surface template is formed by connecting three limiting blocks in a staggered manner, so that the problem that the contact area of the first structural surface template and a casting material is influenced by forming a groove at the top end of the first structural surface template is avoided, and the quality of the prepared structural body with the same structural surface appearance is not influenced.
A method for preparing a mold for manufacturing structural bodies with the same structural surface appearance comprises the following steps:
step one, obtaining a primary structure surface. Digitizing the original structural surface appearance by using a three-dimensional optical scanning system to construct an original structural surface digital model, importing the digital model into a 3D printer in a file format of STL (standard template language), and printing the digital model of the original structural surface into a first structural surface template and a second structural surface template by using the 3D printer;
placing a bottom plate on a flat table top, wherein the bottom plate is square, boss strips arranged along the corresponding length direction are fixed on the periphery of the bottom plate, and meanwhile, a positioning slot is formed in the upper surface of the bottom plate along the central line of the bottom plate, and the bottom plate vertical to the bottom plate is inserted into the positioning slot;
fixing the first structural surface template on the surface of one side of the inserting plate, wherein a clamping groove structure is fixed at the top end of the first structural surface template;
aligning and fixing the second structural surface template and the first structural surface template on the plate surface on the other side of the inserting plate in parallel, and fixing clamping strips at the top end of the second structural surface template, wherein the clamping strips are in one-to-one corresponding insertion connection with the clamping groove structures;
step five, four side plates are vertically erected around the bottom plate, strip-shaped grooves matched with the boss strips are formed in one side of the bottom ends of the four side plates inwards along the corresponding length direction, the strip-shaped grooves are in one-to-one corresponding insertion with the boss strips, every two adjacent side plates are connected, one pair of the relatively fixed side plates are parallel to the plate surface of the inserting plate, the other pair of the relatively fixed side plates correspond to the two sides of the inserting plate one by one and are in butt joint, and the four side plates, the bottom plate and the inserting plate form two pouring cavities;
and sixthly, fixing lug plates on the side parts of the pair of side plates which are fixed oppositely, wherein each lug plate is provided with a through hole, bolts penetrate through the through holes which are formed in the lug plates which are fixed oppositely, and the two ends of each bolt are fastened on the lug plates through nuts.
A method for preparing structures with the same structural surface appearance by using a mold for preparing the structures with the same structural surface appearance comprises the following steps:
step one, fixing the assembled die on a vibration table;
step two, spraying a release agent on the side plate, the first structural surface template and the second structural surface template, and mixing the raw material alpha-type semi-hydrated gypsum and water according to a mass ratio of 1: 0.3, mixing and uniformly stirring for about 40-45 s;
pouring the uniformly mixed pouring raw materials into the assembled mould twice, wherein the height of the pouring raw materials poured into the mould each time is half of the height of the mould;
step four, vibrating on the vibration table for 2-3 minutes;
taking the die off the vibration table, and scraping the upper surface of the prepared structure body by using a scraper;
standing for 3-5 minutes, and pouring the structural bodies with the same structural surface appearance of the structural body;
and step seven, removing the mold.
Selected alpha-hemihydrate gypsum (CaSo)4·1/2H20) The method has the characteristics of short coagulation time and high strength after coagulation, can greatly shorten the time required by sample pouring, improve the pouring efficiency and reduce the test period, and has the advantage of quickly and accurately re-engraving the appearance of the original structural surface.
In the third step, the prepared pouring raw materials are poured into a position which is half of the height of the pouring cavity of the mold, and after bubbles in the pouring raw materials poured into the pouring cavity of the mold are discharged (within 20-30 s), the rest pouring raw materials are poured into the pouring cavity of the mold continuously.
Pouring raw materials are poured in twice, so that bubbles generated when gypsum is hydrated can be discharged, the porosity of a sample can be reduced, and pores are prevented from appearing on the surface of a structural surface.
The first structural surface template and the second structural surface template are printed through an SLA 3D printer, and the used printing material is photosensitive resin.
Compared with the prior art, the invention discloses a mold for manufacturing a structural body with a rock-like structural surface and a preparation method thereof, and the following technical effects can be realized:
the lateral surfaces of the periphery of the bottom plate are all fixed with boss strips arranged along the corresponding length direction, one side of the bottom end of the side plate is internally provided with strip-shaped grooves matched with the boss strips along the corresponding length direction, the side plate is vertically erected on the bottom plate in a manner that the boss strips are correspondingly inserted into the strip-shaped grooves, and the combination of the strip-shaped grooves and the boss strips can lead the seepage path of slurry in a pouring cavity to be bent and reduce the seepage amount of liquid, so that the quality of the prepared structural body with the same structural surface appearance is improved, and the accuracy of the structural surface of a rock mass for testing the obtained data is improved;
meanwhile, the first structural surface template and the second structural surface template are respectively fixed on the panels at two sides of the inserting plate, so that the first structural surface template and the second structural surface template are fixed on the bottom plate through the inserting plate, the strength of the combined two structural surface templates is improved, deformation caused by multiple times of pouring is prevented, and the accuracy of data obtained by a test is improved;
in addition, a clamping groove structure is fixed at the top end of the first structural surface template, a clamping strip is fixed at the top end of the second structural surface template, and the two structural surface templates are fixed in an inserting manner of the clamping strip and the clamping groove structure, so that when the invention can prevent the two structural surface templates from relative dislocation, the accurate repeated engraving of the structural surface appearance can be realized, and the multiple tests can be carried out on the structural surface with the same appearance under different stress conditions;
the structural body with the same structural surface morphology manufactured by the method can be used for realizing the test of the same structural surface morphology under different loading conditions (different loading rates and different loading modes (constant normal force or constant normal rigidity)).
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an overall structural view of a mold for manufacturing structures having the same structural surface morphology according to the present invention;
FIG. 2 is a structural diagram of the insertion plate of the present invention inserted on the bottom plate;
fig. 3 is a structural view of a side panel of the present invention.
Wherein, 1-a bottom plate; 11-a boss bar; 12-positioning the slot; 2, inserting a board; 3-side plate; 31-a strip-shaped groove; 4-a first structural face template; 41-a card slot structure; 5-a second structural face template; 51-card strip; 32-anti-leakage slot; 33-cutting; 34-ear plate; 35-bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a mold for manufacturing structural bodies with the same structural surface appearance, which comprises:
the square bottom plate 1 comprises a bottom plate 1, wherein the bottom plate 1 is square, boss strips 11 arranged along the corresponding length direction are fixed on the end surfaces of the periphery of the bottom plate 1, and meanwhile, a positioning slot 12 is formed in the upper surface of the bottom plate 1 along the center line of the bottom plate 1;
the inserting plate 2 (the inserting plate 2 can be but is not limited to a steel plate), and the inserting plate 2 is inserted into the positioning slot 12 in a way of being vertical to the bottom plate 1;
four side plates 3 are vertically arranged on the bottom plate 1, one side of the bottom end of each side plate 3 is inwards provided with a strip-shaped groove 31 matched with the boss strip 11 along the corresponding length direction, the strip-shaped grooves 31 are correspondingly spliced with the boss strips 11 one by one, and every two adjacent side plates 3 are connected, and one pair of the relatively fixed side plates 3 is parallel to the plate surface of the inserting plate 2, and the other pair of the relatively fixed side plates 3 are in butt joint or inserted connection with the two sides of the inserting plate 2 one by one (the side plates 3 are provided with slots corresponding to the inserting plates 2, the edge of the inserting plate 2 is inserted into the slot of the side plate 3; or the side plate 3 is provided with a convex strip corresponding to the inserting plate 2, the edge part of the inserting plate 2 is provided with a slot corresponding to the convex strip, the raised lines of the side plates 3 are correspondingly inserted into the slots of the inserting plates 2)), the four side plates 3, the bottom plate 1 and the inserting plates 2 form two casting cavities;
the first structural surface template 4 is fixed on the plate surface on one side of the inserting plate 2 in parallel, and a clamping groove structure 41 is fixed at the top end of the first structural surface template 4;
the second structure face template 5, the second structure face template 5 aligns and fixes on the face of picture peg 2 opposite with first structure face template 4 in parallel with first structure face template 4, and the top of second structure face template 5 is fixed with card strip 51 simultaneously, and card strip 51 pegs graft with draw-in groove structure 41 one-to-one, and card strip 51 inserts in the draw-in groove of draw-in groove structure 41.
In order to further optimize the above technical solution, the positioning slot 12 is trapezoidal, and the width of the notch of the positioning slot 12 is smaller than the width of the bottom of the positioning slot 12.
In order to further optimize the above technical solution, the material of the insert plate 2 is a steel plate (the insert plate 2 may be, but is not limited to, a steel plate).
In order to further optimize the above technical solution, the two sides of each side plate 3 are respectively provided with an anti-leakage slot 32 and a cutting 33 along the height of the side plate 3, and the anti-leakage slot 32 of each side plate 3 is in one-to-one corresponding insertion connection with the cutting 33 of the adjacent side plate 3.
In order to further optimize the technical scheme, the side parts of the outer walls of the pair of side plates 3 which are fixed relatively are all fixed with lug plates 34, each lug plate 34 is provided with a through hole, meanwhile, a bolt 35 penetrates through the through hole which is formed in each lug plate 34 which is fixed relatively, and two ends of the bolt 35 are fastened on the lug plates 34 through nuts.
In order to further optimize the solution described above, the ear plate 34 is fixed in a position intermediate along the height of the side plate 3.
In order to further optimize the above technical solution, there are two slot structures 41, and the two slot structures 41 are fixed at the top end of the first structural surface template 4 at intervals.
In order to further optimize the above technical solution, there are two clamping strips 51, and the two clamping strips 51 are fixed at the top end of the second structural surface template 5 at intervals.
A method for preparing a mold for manufacturing structural bodies with the same structural surface morphology is characterized by comprising the following steps:
step one, obtaining a primary structure surface. Digitizing the original structural surface appearance by using a three-dimensional optical scanning system to construct a structural surface appearance digitized model, importing the digitized model into a 3D printer in a file format of STL (standard template language), and printing the digitized model of the original structural surface into a first structural surface template 4 and a second structural surface template 5 by using the 3D printer;
placing a bottom plate 1 on a flat table top, wherein the bottom plate 1 is square, boss strips 11 arranged along the corresponding length direction are fixed on the periphery of the bottom plate 1, a positioning slot 12 is formed in the upper surface of the bottom plate 1 along the central line of the bottom plate 1, and the vertical bottom plate 1 is inserted into the positioning slot 12;
fixing a first structural surface template 4 on the surface of one side of the inserting plate 2, wherein a clamping groove structure 41 is fixed at the top end of the first structural surface template 4;
aligning and fixing the second structural surface template 5 and the first structural surface template 4 in parallel on the plate surface of the other side of the inserting plate 2 opposite to the first structural surface template 4, fixing a clamping strip 51 at the top end of the second structural surface template 5, and correspondingly inserting the clamping strip 51 and the clamping groove structures 41 one by one;
step five, four side plates 3 are vertically arranged around the bottom plate 1, strip-shaped grooves 31 matched with the boss strips 11 are formed inwards on one sides of the bottom ends of the four side plates 3 along the corresponding length direction, the strip-shaped grooves 31 are correspondingly spliced with the boss strips 11 one by one, every two adjacent side plates 3 are connected, one pair of the relatively fixed side plates 3 is parallel to the plate surface of the inserting plate 2, the other pair of the relatively fixed side plates 3 correspond to the two sides of the inserting plate 2 one by one and are in butt joint, and the four side plates 3, the bottom plate 1 and the inserting plate 2 form two pouring cavities;
step six, the side parts of the pair of side plates 3 which are fixed oppositely are fixed with lug plates 34, each lug plate 34 is provided with a through hole, and the through holes arranged on the lug plates 34 which are fixed oppositely are connected through bolts 35 and nuts.
A method for manufacturing a mold and a structure with the same structural surface appearance comprises the following steps:
step one, fixing the assembled die on a vibration table;
step two, spraying a release agent on the side plate 3, the first structural surface template 4 and the second structural surface template 5, and mixing the raw material alpha-type semi-hydrated gypsum and water according to a mass ratio of 1: 0.3, mixing and uniformly stirring for about 40-45 s;
pouring the uniformly mixed casting raw materials into the assembled mould twice, wherein the height of the poured casting raw materials is half of the height of the mould each time;
step four, vibrating on a vibrating table for 2-3 minutes;
taking the die off the vibration table, and scraping the upper surface of the prepared structure body by using a scraper;
sixthly, standing for 3-5 minutes to finish pouring of the structural bodies with the same structural surface appearance; and step seven, removing the mold.
In order to further optimize the technical scheme, in the third step, the prepared pouring raw materials are poured into the half height of the pouring cavity of the mold, and after bubbles in the pouring raw materials poured into the pouring cavity of the mold for the first time are discharged (the time is 20-30 s), the rest pouring raw materials are continuously poured into the pouring cavity of the mold.
Example 1:
the embodiment of the invention discloses a preparation method of a mold for manufacturing structural bodies with the same structural surface appearance, which is characterized by comprising the following steps:
step one, obtaining a primary structure surface. The method comprises the steps of digitizing the original structural surface appearance by utilizing three-dimensional scanning to construct a structural surface digital model, importing the digital model into a 3D printer in an STL file format, and printing the digital model of the original structural surface into a first structural surface template 4 and a second structural surface template 5 by utilizing the 3D printer;
placing a bottom plate 1 on a flat table top, wherein the bottom plate 1 is square, boss strips 11 arranged along the corresponding length direction are fixed on the periphery of the bottom plate 1, meanwhile, a positioning slot 12 is formed in the upper surface of the bottom plate 1 along the central line of the bottom plate 1, and an inserting plate 2 is inserted into the positioning slot 12 in a manner of being vertical to the bottom plate 1;
fixing (bonding but not limited to) the first structural surface template 4 on the plate surface on one side of the inserting plate 2, wherein a clamping groove structure 41 is fixed at the top end of the first structural surface template 4;
aligning and fixing the second structural surface template 5 and the first structural surface template 4 in parallel on the plate surface of the other side of the inserting plate 2 opposite to the first structural surface template 4, fixing a clamping strip 51 at the top end of the second structural surface template 5, and correspondingly inserting the clamping strip 51 and the clamping groove structures 41 one by one;
step five, four side plates 3 are vertically arranged around the bottom plate 1, strip-shaped grooves 31 matched with the boss strips 11 are formed inwards on one sides of the bottom ends of the four side plates 3 along the corresponding length direction, the strip-shaped grooves 31 are correspondingly spliced with the boss strips 11 one by one, every two adjacent side plates 3 are connected, one pair of the relatively fixed side plates 3 is parallel to the plate surface of the inserting plate 2, the other pair of the relatively fixed side plates 3 correspond to the two sides of the inserting plate 2 one by one and are in butt joint, and the four side plates 3, the bottom plate 1 and the inserting plate 2 form two casting cavities;
step six, the side parts of the pair of side plates 3 which are fixed relatively are fixed with lug plates 34, each lug plate 34 is provided with a through hole, meanwhile, a bolt 35 penetrates through the through hole which is formed in each lug plate 34 which is fixed relatively, and two ends of the bolt 35 are fastened on the lug plates 34 through nuts.
The boss strips 11 arranged along the corresponding length direction are fixed on the end faces on the periphery of the bottom plate 1, the strip-shaped grooves 31 matched with the boss strips 11 are formed inwards on one side of the bottom end of the side plate 3 along the corresponding length direction, the side plate 3 is vertically erected on the bottom plate 1 in a manner that the boss strips 11 are correspondingly inserted into the strip-shaped grooves 31, so that a slurry seepage path in a pouring cavity can be bent, the seepage amount of liquid is reduced, the quality of the prepared structural body with the same structural surface appearance is improved, and the accuracy of the rock structural surface for testing the obtained data is improved;
meanwhile, the first structural surface template 4 and the second structural surface template 5 are respectively fixed on the panels at two sides of the inserting plate 2, so that the first structural surface template 4 and the second structural surface template 5 are fixed on the bottom plate 1 through the inserting plate 2, the strength of the two structural surface templates after combination is improved, the structural surface templates are prevented from deforming due to multiple times of pouring, and the accuracy of data obtained by the test is improved;
according to the invention, the clamping groove structure 41 is fixed at the top end of the first structural surface template 4, the clamping strip 51 is fixed at the top end of the second structural surface template 5, the two structural surface templates are structurally spliced with the clamping groove structure 41 through the clamping strip 51, and the clamping strip 51 is fixed in a mode of being inserted into the clamping groove in the clamping groove structure 41, so that the two structural surface templates can be prevented from relative dislocation when the test device vibrates, therefore, the accurate repeated carving of the structural surface appearance can be realized, and the test accuracy is improved.
A method for preparing structures with the same structural surface appearance by using a mold for preparing the structures with the same structural surface appearance comprises the following steps:
step one, fixing the assembled die on a vibration table;
step two, spraying a release agent on the side plate 3, the first structural surface template 4 and the second structural surface template 5, and mixing the raw material alpha-type semi-hydrated gypsum and water according to a mass ratio of 1: 0.3, mixing and uniformly stirring for 40-45 s;
pouring the uniformly mixed casting raw materials into the assembled mould twice, wherein the height of the poured casting raw materials is half of the height of the mould each time;
step four, vibrating on a vibrating table for 2-3 minutes;
taking the die off the vibration table, and scraping the upper surface of the prepared structure body by using a scraper;
standing for 3-5 minutes, and finishing pouring the structural bodies with the same structural surface appearance;
and step seven, removing the mold.
The alpha-hemihydrate gypsum (CaSo) selected by the invention4·1/2H20) Has the characteristics of quick solidification time and high strength after solidification, can greatly shorten the sample pouring time and improve the pouring efficiency, and the method has the advantages ofThe appearance of the primary structure surface is quickly and accurately re-engraved; in addition, the pouring raw materials are poured in twice, so that bubbles generated during gypsum hydration can be discharged, the porosity of the sample can be reduced, and pores are prevented from being generated on the surface of the structural surface.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A mold for producing structures having the same structural surface topography, comprising:
the square bottom plate (1), boss strips (11) arranged along the corresponding length direction are fixed on the end faces of the periphery of the bottom plate (1), and meanwhile, a positioning slot (12) is formed in the upper surface of the bottom plate (1) along the central line of the bottom plate (1);
the inserting plate (2) is perpendicular to the bottom plate (1) and is inserted into the positioning slot (12);
the side plates (3) are four, the side plates (3) are vertically arranged on the bottom plate (1), strip-shaped grooves (31) matched with the boss strips (11) are formed in one side of the bottom ends of the four side plates (3) inwards along the corresponding length direction, the strip-shaped grooves (31) are correspondingly spliced with the boss strips (11) one by one, every two adjacent side plates (3) are connected simultaneously, one pair of the relatively fixed side plates (3) are parallel to the surface of the inserting plate (2), the other pair of the relatively fixed side plates (3) correspond to the two sides of the inserting plate (2) one by one and are butted, and the four side plates (3), the bottom plate (1) and the inserting plate (2) form two pouring cavities; the first structural surface template (4) is fixed on the plate surface on one side of the inserting plate (2) in parallel, and a clamping groove structure (41) is fixed at the top end of the first structural surface template (4);
second structure face template (5), second structure face template (5) with first structure face template (4) align and the parallel is fixed picture peg (2) with on the face of the opposite side that first structure face template (4) is relative, simultaneously the top of second structure face template (5) is fixed with card strip (51), card strip (51) with draw-in groove structure (41) one-to-one is pegged graft, card strip (51) insert in the draw-in groove of draw-in groove structure (41).
2. The mold for manufacturing structures with the same structural surface topography as in claim 1, wherein the positioning insertion groove (12) is trapezoidal, and the width of the notch of the positioning insertion groove (12) is smaller than the width of the groove bottom of the positioning insertion groove (12).
3. A mould for making structures with the same structural surface topography according to claim 1, characterised in that the material of the insert plate (2) is steel plate.
4. The mold for manufacturing structures with the same structural surface morphology as in claim 1, wherein two sides of each side plate (3) are respectively provided with anti-leakage slots (32) and insertion strips (33) along the height of the side plate (3), and the anti-leakage slots (32) of each side plate (3) are inserted into the insertion strips (33) of the adjacent side plates (3) in a corresponding manner.
5. The mold for manufacturing structural bodies with the same structural surface morphology as in claim 1, wherein the side portions of the outer walls of the pair of side plates (3) fixed relatively are fixed with lug plates (34), each lug plate (34) is provided with a through hole, a bolt (35) penetrates through the through hole formed in each lug plate (34) fixed relatively, and two ends of the bolt (35) are fastened on the lug plates (34) through nuts.
6. Mould for making structures with the same structural surface topography, according to claim 5, characterized in that the ear plate (34) is fixed in the middle position of the side plate (3) along the height.
7. The mold for manufacturing structural bodies with the same structural surface morphology as in claim 1, wherein there are two slot structures (41), and the two slot structures (41) are fixed at the top end of the first structural surface template (4) at intervals.
8. The mold for manufacturing a structural body with the same structural surface morphology as in claim 7, wherein there are two clamping strips (51), and the two clamping strips (51) are fixed at the top end of the second structural surface template (5) at intervals.
9. A method for manufacturing a mold for manufacturing structures having the same structural surface morphology according to any one of claims 1 to 8, comprising the steps of:
step one, obtaining a primary structure surface. Digitizing the original structural surface by using a three-dimensional optical scanning system to construct a structural surface digital model, then importing the digitized structural surface model into a 3D printer in a file format of STL (standard template language), and printing the digitized structural surface model of the original structural surface into a first structural surface template (4) and a second structural surface template (5) by using the 3D printer;
placing a bottom plate (1) on a flat table top, wherein the bottom plate (1) is square, boss strips (11) arranged along the corresponding length direction are fixed on the periphery of the bottom plate (1), meanwhile, a positioning slot (12) is formed in the upper surface of the bottom plate (1) along the center line of the bottom plate (1), and the inserting plate (2) is inserted into the positioning slot (12);
fixing the first structural surface template (4) on the plate surface on one side of the inserting plate (2), wherein a clamping groove structure (41) is fixed at the top end of the first structural surface template (4);
aligning and fixing the second structural surface template (5) and the first structural surface template (4) in parallel on the plate surface on the other side of the inserting plate (2), fixing a clamping strip (51) at the top end of the second structural surface template (5), and correspondingly inserting the clamping strips (51) and the clamping groove structures (41) in a one-to-one manner;
step five, four side plates (3) are vertically and vertically arranged around the bottom plate (1), strip-shaped grooves (31) matched with the boss strips (11) are formed in one sides of the bottoms of the four side plates (3) inwards along the corresponding length direction, the strip-shaped grooves (31) are correspondingly spliced with the boss strips (11) one by one, every two adjacent side plates (3) are connected simultaneously, one pair of the relatively fixed side plates (3) are parallel to the plate surface of the inserting plate (2), the other pair of the relatively fixed side plates (3) correspond to the two sides of the inserting plate (2) one by one and are butted, and the four side plates (3), the bottom plate (1) and the inserting plate (2) form two casting cavities;
sixthly, ear plates (34) are fixed on the side portions of the pair of side plates (3) which are fixed oppositely, a through hole is formed in each ear plate (34), meanwhile, a bolt (35) penetrates through the through hole formed in each ear plate (34) which is fixed oppositely, and the two ends of each bolt (35) are fastened on the ear plates (34) through nuts.
10. A method for preparing a structure with the same structural surface appearance by using the mold for manufacturing a structure with the same structural surface appearance according to any one of claims 1 to 8, comprising the following steps:
step one, fixing the assembled die on a vibration table;
step two, spraying a release agent on the side plate (3), the first structural surface template (4) and the second structural surface template (5), and mixing the casting raw materials of alpha-type semi-hydrated gypsum and water according to a mass ratio of 1: 0.3, uniformly stirring for about 40-45 s;
pouring the uniformly mixed castable into the assembled mould twice, wherein the height of the castable poured each time is half of the height of the mould;
step four, vibrating on the vibration table for 2-3 minutes;
taking the die off the vibration table, and scraping the upper surface of the prepared structure body by using a scraper;
standing for 3-5 minutes, and pouring the structural bodies with the same structural surface appearance;
and step seven, removing the mold.
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| CN113945437A (en) * | 2021-09-14 | 2022-01-18 | 中电建路桥集团有限公司 | Test mold for preparing test block and test block preparation method |
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