CN212372404U - Manufacturing die for cement-based thin-walled tube sample - Google Patents
Manufacturing die for cement-based thin-walled tube sample Download PDFInfo
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- CN212372404U CN212372404U CN202020173665.3U CN202020173665U CN212372404U CN 212372404 U CN212372404 U CN 212372404U CN 202020173665 U CN202020173665 U CN 202020173665U CN 212372404 U CN212372404 U CN 212372404U
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Abstract
The utility model discloses a preparation mould of cement base thin wall pipe sample can be used for preparing cement base thin wall pipe sample, and because the centre form is the plug and can rotate relatively after the cavity is pour to the pipe shape cement base material to cement base material pouring, in order to prevent that cement base material from bonding with the plug in the hardening process together, and, because when the die sinking, the external mold is top cap, base, first halfbody, second halfbody promptly, at last, down, a left side, four directions in the right side and cement base thin wall pipe sample carry out the separation, consequently, can guarantee that external mold and centre form all easily separate with preparation fashioned cement base thin wall pipe sample, the utility model has the advantages of easily drawing of patterns, can avoid the thin cement base thin wall pipe sample of pipe wall to appear cracked when the drawing of patterns.
Description
Technical Field
The utility model relates to a building material and test equipment technical field, specific preparation mould of cement base thin wall pipe sample that says so.
Background
The concrete is the most used building material in the world at present, and the usage amount of the concrete in China is in the world, and plays an extremely important role in adapting to the rapid development of economy. However, concrete also exhibits many problems in application, and particularly, durability is a problem, which occurs when structural damage occurs due to insufficient durability, causing huge socioeconomic loss. Sulfate attack is one of the important durability issues. External sulfate attack in the case of pure soaking is a slow process and studies have found that even with high water-to-ash ratios and high sulfate concentrations as laboratory acceleration methods, the depth of attack after several months is still shallow (on the order of a few millimeters). However, the size of the samples used in the laboratories available at home and abroad is large compared to the slow transport of sulfate ions, e.g. 25mm 285mm in ASTM standard, 25mm 150mm in some studies, 40mm 160mm, etc. Therefore, a gradient stress along the sulfate ion transport direction is caused, so that data such as a free expansion amount measured in a laboratory is difficult to reflect in reality. In order to solve the problem, a cement-based material hollow pipe with the pipe wall thickness of 2.5mm to 5mm is adopted as a test sample to reduce the influence of gradient stress. However, the mould for manufacturing the cement-based material test sample in the prior art has the problem that the cement-based material tubular test sample is difficult to demould when being manufactured with a thin tube wall, so that the cement-based material tubular test sample is cracked during demould.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the mould for manufacturing the cement-based thin-wall pipe sample is provided to solve the problem that the cement-based material tubular test sample is cracked during demoulding due to difficult demoulding when the cement-based material tubular test sample with a thin pipe wall is manufactured in the prior art.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
a mould for manufacturing a cement-based thin-walled tube sample comprises an outer mould and an inner mould;
the method is characterized in that:
the outer mold consists of a top cover, a first half body, a second half body and a base; the inner die is a core rod which is composed of an upper positioning cylinder, a cylindrical rod body and a lower positioning cylinder which are coaxial and sequentially connected;
the first half body and the second half body are respectively provided with a semi-cylindrical groove, and the first half body and the second half body are fixedly connected in a detachable mode to form a main pipe body, so that the two semi-cylindrical grooves form a cylindrical pipe cavity of the main pipe body;
the base is fixedly connected to the lower end part of the main pipe body in a detachable mode so as to seal the lower port of the cylindrical pipe cavity, and a cylindrical positioning groove communicated with the cylindrical pipe cavity is formed in the top surface of the base;
the lower positioning cylinder is rotatably installed in a cylindrical positioning groove of the base, a cylindrical rod body of the core rod is accommodated in a cylindrical pipe cavity of the main pipe body, the bottom surface of the cylindrical rod body is clung to the top surface of the base, the top surface of the cylindrical rod body is flush with the top surface of the main pipe body, and the core rod, the cylindrical pipe cavity and the cylindrical positioning groove are coaxial, so that a circular pipe-shaped cement-based material pouring cavity is formed between the cylindrical rod body and the main pipe body;
the top cap is equipped with cylindrical positioning through hole, the top cap through can dismantle mode fixed connection in be responsible for the upper end of the body for: the bottom surface of the top cover is closely attached to the top surface of the cylindrical rod body, and the upper positioning cylinder of the core rod is rotatably matched with the cylindrical positioning through hole of the top cover and extends upwards to the outside of the top cover.
Therefore, utilize the utility model discloses a preparation mould can be according to following step preparation cement base thin wall pipe sample:
firstly, assembling the first half body, the second half body and the base into a whole, and installing the mandrel into the whole;
secondly, slowly pouring the stirred cement-based material into the round-tube-shaped cement-based material pouring cavity, and placing a mould on a vibration table, so that on one hand, the discharge of bubbles is facilitated, and on the other hand, the pouring of the cement-based material is facilitated;
then, mounting the top cover;
finally, rotating the core rod for 2 circles every 1 hour, and taking out the core rod after 6 hours; after 24 hours, the top cover, the base, the first half body and the second half body are disassembled, and the molded cement-based thin-walled tube sample is obtained.
Therefore, the utility model discloses a preparation mould can be used for preparing cement base thin wall pipe sample, and because the centre form is the plug and can rotate external mold relatively after the cavity is pour to the pipe shape cement base material to cement base material pouring to prevent that cement base material from bonding with the plug in the hardening process together, and, because when the die sinking, the external mold is top cap, base, first halfbody, second halfbody promptly, and upper and lower, left and right four directions and cement base thin wall pipe sample carry out the separation, consequently, can guarantee that external mold and centre form all easily separate with the preparation fashioned cement base thin wall pipe sample, the utility model has the advantages of easily drawing of patterns, can avoid the thin cement base thin wall pipe sample of pipe wall cracked when the drawing of patterns to appear.
Preferably: the wall thickness of the round tube-shaped cement-based material pouring cavity is between 2.5mm and 5 mm.
Preferably: the upper positioning cylinder extends out of the top cover, and two plane tangent planes which are symmetrically arranged are arranged on the side wall, so that the core rod can be conveniently clamped on the two plane tangent planes by a wrench to realize rotation of the core rod.
As a preferred embodiment of the present invention: the top cover, the first half body, the second half body and the base are all made of PVC materials, and the mandrel is made of stainless steel materials.
Therefore, the utility model can further improve the characteristic of easy demoulding, and ensure the manufacturing precision of the cement-based thin-wall pipe sample, so as to be more suitable for preparing the cement-based thin-wall pipe sample with the cavity wall thickness of 2.5mm to 5 mm; and moreover, the repeated utilization rate of the manufacturing die is improved.
As a preferred embodiment of the present invention: the bottom surface of top cap with the top surface of base all is equipped with the location cavity, the top surface and the bottom surface of first halfbody are equipped with first location boss and first location boss down respectively, the top surface and the bottom surface of second halfbody are equipped with location boss and second location boss down on the second respectively for: when the base is fixedly connected to the lower end part of the main pipe body, the first lower positioning boss and the second lower positioning boss form an annular lower positioning boss and are matched and embedded in the positioning cavity of the base, and when the top cover is fixedly connected to the upper end part of the main pipe body, the first upper positioning boss and the second upper positioning boss form an annular upper positioning boss and are matched and embedded in the positioning cavity of the top cover.
Therefore, the positioning assembly between the main pipe body and the top cover and between the main pipe body and the base can be facilitated, and the accuracy of the assembly position is ensured.
As a preferred embodiment of the present invention: the detachable fixed connection between the first half body and the second half body, between the base and the main pipe body and between the top cover and the main pipe body is realized in a bolt connection mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses a preparation mould can be used for preparing cement base thin wall pipe sample, and because the centre form is the plug and can rotate relative outer mould after the cavity is pour to the pipe shape cement base material to cement base material pouring to prevent that cement base material from bonding with the plug in hardening process together, and, because when the die sinking, the outer mould is the top cap promptly, the base, first halfbody, the second halfbody is upper and lower, left and right four directions and cement base thin wall pipe sample carry out the separation, consequently, can guarantee that outer mould and centre form all easily separate with the preparation fashioned cement base thin wall pipe sample, the utility model has the advantages of easily drawing of patterns, can avoid the thin cement base thin wall pipe sample of pipe wall to appear cracked when the drawing of patterns.
Secondly, the utility model discloses a top cap, first halfbody, second halfbody and base are made to the PVC material, adopt stainless steel material to make the plug, can further improve its characteristic of easily drawing of patterns to can ensure the preparation precision of cement base thin wall pipe sample, with more being suitable for the cement base thin wall pipe sample of preparation chamber wall thickness between 2.5mm to 5 mm; and moreover, the repeated utilization rate of the manufacturing die is improved.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
fig. 1 is a schematic structural view of the mold of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without creative work for those skilled in the art will fall within the scope of the present invention without departing from the scope of the present invention.
Example one
As shown in fig. 1 and fig. 2, the utility model discloses a cement-based thin-walled tube sample manufacturing mold, which comprises an outer mold and an inner mold;
the method is characterized in that:
the outer mold consists of a top cover 1, a first half body 2, a second half body 3 and a base 4; the inner mold is a core rod 5, and the core rod 5 consists of an upper positioning cylinder 5-1, a cylindrical rod body 5-2 and a lower positioning cylinder 5-3 which are coaxially and sequentially connected;
the first half body 2 and the second half body 3 are both provided with semi-cylindrical grooves, and the first half body 2 and the second half body 3 are fixedly connected in a detachable mode to form a main pipe body, so that the two semi-cylindrical grooves form a cylindrical pipe cavity of the main pipe body;
the base 4 is fixedly connected with the lower end part of the main pipe body in a detachable mode so as to seal the lower port of the cylindrical pipe cavity, and a cylindrical positioning groove 4a communicated with the cylindrical pipe cavity is formed in the top surface of the base 4;
the lower positioning cylinder 5-3 is rotatably installed in a cylindrical positioning groove 4a of the base 4, the cylindrical rod body 5-2 of the core rod 5 is accommodated in the cylindrical tube cavity of the main tube body, the bottom surface of the cylindrical rod body 5-2 is closely attached to the top surface of the base 4, the top surface of the cylindrical rod body 5-2 is flush with the top surface of the main tube body, and the core rod 5, the cylindrical tube cavity and the cylindrical positioning groove 4a are coaxial, so that a circular tube-shaped cement-based material pouring cavity B is formed between the cylindrical rod body 5-2 and the main tube body;
top cap 1 is equipped with cylindrical positioning through hole, top cap 1 through can dismantle mode fixed connection in be responsible for the upper end of the body for: the bottom surface of the top cover 1 is closely attached to the top surface of the cylindrical rod body 5-2, and the upper positioning cylinder 5-1 of the core rod 5 is rotatably matched with the cylindrical positioning through hole of the top cover 1 and extends upwards to the outside of the top cover 1.
Therefore, utilize the utility model discloses a preparation mould can be according to following step preparation cement base thin wall pipe sample:
firstly, the first half body 2, the second half body 3 and the base 4 are assembled into a whole, and the mandrel 5 is installed therein;
secondly, slowly pouring the stirred cement-based material into the round-tube-shaped cement-based material pouring cavity B, and placing a mould on a vibrating table, so that the discharge of air bubbles is facilitated on one hand, and the pouring of the cement-based material is facilitated on the other hand;
then, the top cover 1 is installed;
finally, rotating the core rod 52 circles every 1 hour, and taking out the core rod 5 after 6 hours; after 24 hours, the top cover 1, the base 4, the first half body 2 and the second half body 3 are disassembled, and a molded cement-based thin-walled tube sample is obtained.
Therefore, the utility model discloses a preparation mould can be used for preparing cement base thin wall pipe sample, and because the centre form is plug 5 can rotate relative outer mould after cement base material pours the pipe shape cement base material pouring chamber B promptly, in order to prevent that cement base material from bonding with plug 5 in the hardening process together, and, because when the die sinking, the outer mould is top cap 1 promptly, base 4, first halfbody 2, second halfbody 3 and carries out the separation at four directions on upper and lower, left and right with cement base thin wall pipe sample, consequently, can guarantee that outer mould and centre form all easily separate with preparation fashioned cement base thin wall pipe sample, the utility model has the advantages of easily drawing of patterns, can avoid the thin cement base thin wall pipe sample of pipe wall to appear cracked when the drawing of patterns.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: the wall thickness of the round tube shaped cement-based material pouring cavity B is between 2.5mm and 5 mm.
Preferably: the upper positioning cylinder 5-1 extends out of the top cover 1, and two plane sections 5-1a which are symmetrically arranged are arranged on the side wall, so that the core rod 5 can be conveniently rotated by clamping the two plane sections 5-1a through a wrench.
Example two
On the basis of the first embodiment, the second embodiment further adopts the following preferred structure:
the top cover 1, the first half body 2, the second half body 3 and the base 4 are all made of PVC material, and the mandrel 5 is made of stainless steel material.
Therefore, the utility model can further improve the characteristic of easy demoulding, and ensure the manufacturing precision of the cement-based thin-wall pipe sample, so as to be more suitable for preparing the cement-based thin-wall pipe sample with the cavity wall thickness of 2.5mm to 5 mm; and moreover, the repeated utilization rate of the manufacturing die is improved.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferable structure:
the bottom surface of top cap 1 with the top surface of base 4 all is equipped with the location cavity, the top surface and the bottom surface of first halfbody 2 are equipped with first location boss and first boss down of going up respectively, the top surface and the bottom surface of second halfbody 3 are equipped with second location boss and second boss down of going up respectively and fix a position for: when the base 4 is fixedly connected to the lower end part of the main pipe body, the first lower positioning boss and the second lower positioning boss form a ring-shaped lower positioning boss C and are adapted to be embedded in the positioning cavity of the base 4, and when the top cover 1 is fixedly connected to the upper end part of the main pipe body, the first upper positioning boss and the second upper positioning boss form a ring-shaped upper positioning boss D and are adapted to be embedded in the positioning cavity of the top cover 1.
Therefore, the positioning assembly between the main pipe body and the top cover 1 and between the main pipe body and the base 4 can be facilitated, and the accuracy of the assembly position can be ensured.
Example four
On the basis of any one of the first to third embodiments, the fourth embodiment further adopts the following preferred structure:
the detachable fixed connection between the first half body 2 and the second half body 3, between the base 4 and the main pipe body and between the top cover 1 and the main pipe body is realized through a bolt connection mode.
The present invention is not limited to the above-mentioned embodiments, and according to the above-mentioned contents, according to the common technical knowledge and conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other equivalent modifications, replacements or changes in various forms, all falling within the protection scope of the present invention.
Claims (6)
1. A mould for manufacturing a cement-based thin-walled tube sample comprises an outer mould and an inner mould;
the method is characterized in that:
the outer mold consists of a top cover (1), a first half body (2), a second half body (3) and a base (4); the inner die is a core rod (5), and the core rod (5) is composed of an upper positioning cylinder (5-1), a cylindrical rod body (5-2) and a lower positioning cylinder (5-3) which are coaxial and sequentially connected;
the first half body (2) and the second half body (3) are respectively provided with a semi-cylindrical groove, and the first half body (2) and the second half body (3) are fixedly connected in a detachable mode to form a main pipe body, so that the two semi-cylindrical grooves form a cylindrical pipe cavity of the main pipe body;
the base (4) is fixedly connected to the lower end part of the main pipe body in a detachable mode so as to seal the lower port of the cylindrical pipe cavity, and a cylindrical positioning groove (4a) communicated with the cylindrical pipe cavity is formed in the top surface of the base (4);
the lower positioning cylinder (5-3) is rotatably installed in a cylindrical positioning groove (4a) of the base (4), a cylindrical rod body (5-2) of the core rod (5) is accommodated in a cylindrical pipe cavity of the main pipe body, the bottom surface of the cylindrical rod body (5-2) is tightly attached to the top surface of the base (4), the top surface of the cylindrical rod body (5-2) is flush with the top surface of the main pipe body, and the core rod (5), the cylindrical pipe cavity and the cylindrical positioning groove (4a) are coaxial, so that a circular pipe-shaped cement-based material pouring cavity (B) is formed between the cylindrical rod body (5-2) and the main pipe body;
the top cover (1) is provided with a cylindrical positioning through hole, and the top cover (1) is fixedly connected to the upper end part of the main pipe body in a detachable mode, so that: the bottom surface of the top cover (1) is closely attached to the top surface of the cylindrical rod body (5-2), and the upper positioning cylinder (5-1) of the core rod (5) is rotatably matched with the cylindrical positioning through hole of the top cover (1) and extends upwards to the outside of the top cover (1).
2. The mold for manufacturing a cement-based thin-walled tube sample according to claim 1, wherein: the wall thickness of the round tube shaped cement-based material pouring cavity (B) is between 2.5mm and 5 mm.
3. The mold for manufacturing a cement-based thin-walled tube sample according to claim 1, wherein: the upper positioning cylinder (5-1) extends out of the top cover (1), and two plane tangent planes (5-1a) which are symmetrically arranged are arranged on the side wall.
4. The mold for manufacturing a cement-based thin-walled tube sample according to any one of claims 1 to 3, wherein: the top cover (1), the first half body (2), the second half body (3) and the base (4) are all made of PVC materials, and the mandrel (5) is made of stainless steel materials.
5. The mold for manufacturing a cement-based thin-walled tube sample according to any one of claims 1 to 3, wherein: the bottom surface of top cap (1) and the top surface of base (4) all are equipped with the location cavity, the top surface and the bottom surface of first halfbody (2) are equipped with first location boss and first location boss down respectively, the top surface and the bottom surface of second halfbody (3) are equipped with second location boss and second location boss down respectively for: when base (4) fixed connection be in the lower tip of being responsible for the body, first location boss and second are down location boss down and constitute annular location boss (C) and adaptation and inlay and adorn in the location cavity of base (4), when top cap (1) fixed connection be in being responsible for the upper end of the body, first go up location boss and second go up location boss and constitute annular location boss (D) and adaptation and inlay and adorn in the location cavity of top cap (1).
6. The mold for manufacturing a cement-based thin-walled tube sample according to any one of claims 1 to 3, wherein: the detachable fixed connection between the first half body (2) and the second half body (3), between the base (4) and the main pipe body and between the top cover (1) and the main pipe body is realized in a bolt connection mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173665.3U CN212372404U (en) | 2020-02-14 | 2020-02-14 | Manufacturing die for cement-based thin-walled tube sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020173665.3U CN212372404U (en) | 2020-02-14 | 2020-02-14 | Manufacturing die for cement-based thin-walled tube sample |
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| CN212372404U true CN212372404U (en) | 2021-01-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248342A (en) * | 2022-02-07 | 2022-03-29 | 东莞市志橙半导体材料有限公司 | Preparation method of special-shaped semiconductor tube core non-conductive protection tube |
| CN114872183A (en) * | 2022-04-18 | 2022-08-09 | 福建纳川管业科技有限责任公司 | Automatic production line for polyester reinforced composite jacking pipe |
-
2020
- 2020-02-14 CN CN202020173665.3U patent/CN212372404U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248342A (en) * | 2022-02-07 | 2022-03-29 | 东莞市志橙半导体材料有限公司 | Preparation method of special-shaped semiconductor tube core non-conductive protection tube |
| CN114872183A (en) * | 2022-04-18 | 2022-08-09 | 福建纳川管业科技有限责任公司 | Automatic production line for polyester reinforced composite jacking pipe |
| CN114872183B (en) * | 2022-04-18 | 2023-09-29 | 福建纳川管业科技有限责任公司 | Automatic production line for polyester reinforced composite jacking pipe |
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