CN112062648B - Grain surface coating device and method - Google Patents
Grain surface coating device and method Download PDFInfo
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- CN112062648B CN112062648B CN202011020160.4A CN202011020160A CN112062648B CN 112062648 B CN112062648 B CN 112062648B CN 202011020160 A CN202011020160 A CN 202011020160A CN 112062648 B CN112062648 B CN 112062648B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a grain surface coating device and method. The grain surface coating device comprises a die body, a die bottom and a jacking column; the mold bottom is detachably arranged at the bottom of the mold body, and a columnar cavity for accommodating a column part of a finished grain product is formed in the mold body; a spherical cavity is arranged in the mold bottom, a mounting through hole for mounting a jacking column is arranged at the bottom of the spherical cavity, the jacking column can move up and down in the mounting through hole, the top surface of the jacking column is a spherical surface, and the spherical surface and the contour of the spherical cavity jointly define a bottom spherical cavity for accommodating the bottom spherical surface of a finished grain; the cylindrical surface section with the same diameter as the small end of the columnar cavity is arranged on the die bottom at the joint of the spherical cavity and the columnar cavity, the bottom spherical cavity and the cylindrical surface section jointly form a die cavity for accommodating a finished product of the grain. The coating method adopts the process of matching the coating device with coating. By adopting the coating device, the finished product of the grain can be rapidly demoulded and uniformly coated.
Description
Technical Field
The invention relates to the technical field of grain coating, in particular to a grain surface coating device and method.
Background
After the grain is formed, a coating layer with a certain thickness needs to be uniformly coated on the outer surface of the grain in order to achieve the requirements of insulating the grain from the outside and protecting the grain from moisture and the like.
In the prior art, coating of the outer surface of a grain is usually carried out in a mold, the mold adopts a deep blind hole structure, during coating, the mold is firstly placed in hot water, the grain is placed in a mold cavity, then a liquid coating material is slowly poured into the mold cavity from a gap between the grain and the mold cavity until the grain can be completely coated, after the liquid coating material is solidified, the mold is placed in cold water, and after the mold and the grain are integrally cooled, the grain is taken out.
However, there are some problems in the prior art: firstly, the die structure is unreasonable, vacuum is easily formed at the bottom of the die, so that the grain cannot be taken out, the manufacturing requirement of the die is particularly high, and the processing difficulty is high; secondly, the surface of the grain may be incompletely wrapped, and bubble defects may exist.
Disclosure of Invention
The invention provides a grain surface coating device and method, which solve the problems that grains are difficult to take out and have bubbles after being coated in a die.
In order to solve the problems, the technical scheme of the invention is as follows: a grain surface coating device comprises a die body, a die bottom and a top column;
the die bottom is detachably arranged at the bottom of the die body, and a columnar cavity for accommodating a column part of a finished grain product is formed in the die body;
a spherical cavity is arranged in the mold bottom, a mounting through hole for mounting the jacking column is arranged at the bottom of the spherical cavity, the jacking column can move up and down in the mounting through hole, the top surface of the jacking column is a spherical surface, and the spherical surface and the spherical cavity outline jointly define a bottom spherical cavity for accommodating the bottom spherical surface of the finished product of the explosive column;
the cylindrical surface section with the same diameter as the small end of the cylindrical cavity is arranged on the die bottom at the joint of the spherical cavity and the cylindrical cavity, the bottom spherical cavity and the cylindrical surface section jointly form a die cavity for accommodating the finished product of the explosive column.
In one possible embodiment, the die bottom is provided with a columnar structure, the die bottom is provided with a columnar boss, and the mounting through hole penetrates through the bottom end of the columnar boss and shares a central shaft with the die bottom;
the top column comprises a first column section and a second column section with a top surface being a sphere, the diameter of the second column section is larger than that of the first column section, and the free end of the first column section is provided with threads;
the mounting through hole comprises a counter bore in clearance fit with the second column section and a central through hole in clearance fit with the first column section, and the threads are matched with the nuts to lock the top column after the first column section passes through the central through hole.
In one possible embodiment, a through groove radially arranged along the columnar boss is formed in the cylindrical surface of the columnar boss, a radial through hole is formed in the cylindrical surface of the first column section, a limiting pin is arranged in the radial through hole, and two ends of the limiting pin extend into the through groove and can move up and down in the through groove.
In one possible embodiment, a sealing process is performed between the top post and the mounting through hole.
In one possible embodiment, the die body is provided with a columnar structure, the bottom of the die body is provided with external threads, the top of the die bottom is provided with internal threads, and the die body and the die bottom are connected with the internal threads in a matched manner through the external threads.
In one possible embodiment, the outer wall of the die bottom is provided with a spanner hole for facilitating the tightening of the die bottom on the die body.
In one possible embodiment, the outer cylindrical surface of the die body is provided with a hoop which facilitates the movement of the cladding device.
In one possible embodiment, the cylindrical cavity is formed with a taper that facilitates demolding of the finished grain.
The embodiment of the invention also provides a grain surface coating method, which comprises the following steps:
cleaning the surface of a die cavity of the grain surface coating device, and uniformly adhering a plurality of positioning convex blocks which are the same as the material of the layer to be coated and have the same thickness on the surface of the grain, wherein the outer side surfaces of the positioning convex blocks are in contact with the surface of the die cavity;
placing the cladding device on a base, and placing the cladding device in hot water with the temperature of 45-70 ℃ together for water bath heating to a set temperature;
after heating, pouring a liquid coating layer material into a die cavity of the coating device, and slowly placing the grain stuck with the positioning convex blocks into the die cavity so that the liquid coating layer material fully wraps the grain;
preserving heat until the liquid coating material is solidified, and then placing the coating device and the base together in cooling liquid for cooling;
and after cooling is finished, pushing out the finished product of the grain by the ejector rod so as to realize demoulding of the product.
The embodiment of the invention provides a grain surface coating device, which can strip the bottom of a grain finished product by removing a mold bottom when the grain finished product is difficult to be demolded through a mold body and mold bottom split structure; by adopting the mode of arranging the jacking column in the die bottom, when a finished product of the explosive column is jacked on the jacking column, the die bottom and the spherical surface of the bottom of the explosive column are communicated with the outside, so that the vacuum environment between the die bottom and the spherical surface of the bottom of the finished product of the explosive column is relieved, and the finished product of the explosive column can be conveniently demoulded from the coating device by pushing the jacking column upwards; by arranging a small section of cylindrical surface section between the cylindrical cavity and the bottom spherical cavity, the shrinkage of the cylindrical surface section during cooling is larger than that of the cylindrical cavity with taper and the bottom spherical cavity, so that the cylindrical surface section can force the top of the spherical cavity to shrink towards the central direction during shrinkage, and the grain is easier to demould.
The embodiment of the invention provides a grain surface coating device, which is used for uniformly coating a molded grain finished product without bubbles.
Drawings
FIG. 1 is a cross-sectional view of a grain surface coating device provided by an embodiment of the present invention;
FIG. 2 is a front view of a grain surface coating device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a mold bottom provided by an embodiment of the present invention;
fig. 4 is a schematic view of a positioning bump stuck on a surface of a grain according to an embodiment of the present invention.
Reference numerals illustrate:
10-finished grain; 11-coating layer; 12-grain; 13-positioning the protruding blocks; 21-die body; 22-die bottom; 221-a cylindrical section; 222-conical surface; 223-through groove; 23-jacking columns; 24-sealing rings; 25-limiting pins; 26-a gasket; 27-a nut; 28-a base; 29-anchor ear; 30-spanner holes.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a grain surface coating device comprising a die body 21, a die bottom 22 and a top post 23.
Wherein, the die bottom 22 can be dismantled and set up in the bottom of die body 21, that is to say that die bottom 22 adopts split structure design with die body 21, is convenient for on the one hand to singly process die bottom 22 and die body 21, has reduced the processing degree of difficulty, and on the other hand produces when cladding defect in die bottom 22, the accessible dismantles die bottom 22 in order to realize the peeling off of grain finished product 10 and die bottom 22.
Optionally, a cylindrical cavity is formed in the mold body 21 for receiving a cylindrical portion of the finished grain 10. Specifically, the two ends of the columnar cavity of the die body 21 are provided with openings, wherein the top opening of the die body 21 is provided with a horn mouth shape, so that the medicine column is conveniently placed in the horn mouth shape, and the bottom opening of the die body 21 is connected with the die bottom 22.
Optionally, a spherical cavity is provided in the mold bottom 22, a mounting through hole for mounting the jack post 23 is provided at the bottom of the spherical cavity, the jack post 23 can move up and down in the mounting through hole, the top surface of the jack post 23 is a spherical surface, and the spherical surface and the contour of the spherical cavity together define a bottom spherical cavity for accommodating the bottom spherical surface of the finished product 10 of the cartridge.
Specifically, the bottom of the finished grain product 10 is set to be a spherical structure, the spherical structure and the column of the finished grain product 10 are connected together to form the complete finished grain product 10, and in order to realize coating of the bottom of the grain 12, the inner cavity of the die bottom 22 is set to be a spherical cavity correspondingly; in order to realize manual demolding of the coating device, a mounting through hole is formed in the middle of the bottom of the mold bottom 22, a jacking column 23 is arranged in the mounting through hole, the jacking column 23 is fixed in the mold bottom 22 when not in use, the top of the jacking column 23 is in a spherical structure and can be arranged in a spherical cavity, that is, the top spherical surface of the jacking column 23 forms a part of a bottom spherical cavity for accommodating the bottom spherical surface of the finished product 10 of the medicine column, and the top of the installation through hole of the spherical cavity is blocked by the spherical surface at the top of the jacking column 23 so that a complete bottom spherical cavity is formed in the mold bottom 22; when demoulding is needed, the top column 23 is changed from fixed to movable, namely the fixed structure is removed, and the top spherical surface of the top column 23 is in direct contact with the bottom spherical surface of the finished grain product 10, so that the finished grain product 10 can be demoulded by making the bottom spherical surface of the finished grain product 10 on the top column 23.
In the process of coating the grain 12, the grain 12 needs to be stretched into a mold cavity with coating materials, for example, a mold cavity formed in the coating device in the invention, but because a closed vacuum environment is easily formed between the bottom spherical surface of the grain finished product 10 and the spherical surface cavity of the mold bottom 22, once the vacuum is formed, demolding is difficult, and therefore, when the top column 23 is pushed up, air can enter the mold cavity from the fit gap between the mounting through hole of the mold bottom 22 and the top column 23, so that the vacuum state of the bottom spherical surface is relieved, the grain finished product 10 can be ejected upwards, the grain finished product 10 is separated from other inner surfaces of the coating device, and finally the grain finished product 10 is smoothly ejected.
In one possible implementation, the die bottom 22 is provided with a cylindrical surface section 221 with the same diameter as the lower end of the cylindrical cavity at the junction of the spherical cavity and the cylindrical cavity, the bottom spherical cavity and the cylindrical surface section 221 together form a die cavity for accommodating the finished grain 10.
Specifically, referring to fig. 3, the cavity of the die bottom 22 includes a spherical cavity disposed at the bottom, a small cylindrical surface section 221 is disposed at the joint of the spherical cavity and the columnar cavity, the cylindrical surface section 221 and the spherical cavity are disposed on the die bottom 22, the diameter of the cylindrical surface section 221 is equal to the diameter of the lower end of the columnar cavity, the cylindrical surface section 221 is used as a transition section, and the cylindrical surface section 221, the columnar cavity and the spherical cavity are disposed coaxially.
The outer surface coating layer 11 of the grain is required to be cooled after being coated, the material of the coating layer 11 can shrink in the cooling process, the shrinkage of the cylindrical surface is larger than that of the conical surface 222, and the spherical surface basically does not shrink, so that in the cooling process of the coating layer 11, the cylindrical surface section 221 is easier to be stripped from the inner surface of the coating device, and the joint of the spherical surface cavity and the cylindrical surface section 221 is the conical surface 222, so that in the cooling process, the opening of the conical surface 222 shrinks towards the center direction under the pulling action of the shrinkage force of the cylindrical surface section 221, thereby destroying the vacuum relation between the conical surface 222 and even the bottom spherical surface of the grain finished product 10 and the bottom spherical surface cavity, and facilitating the demolding of the grain.
According to the embodiment of the invention, the mold body 21 and the mold bottom 22 are in a split type structure, so that when the finished grain product 10 is difficult to be demolded, the bottom of the finished grain product 10 can be peeled by removing the mold bottom 22; by adopting the mode that the jacking column 23 is arranged in the die bottom 22, when the finished product 10 of the explosive column is jacked on the jacking column 23, the die bottom 22 and the spherical surface of the bottom of the explosive column are communicated with the outside, so that the vacuum environment between the die bottom 22 and the spherical surface of the finished product 10 of the explosive column is relieved, and the finished product 10 of the explosive column can be conveniently demolded from the coating device by pushing the jacking column 23 upwards; by arranging a small cylindrical surface section 221 between the cylindrical cavity and the bottom spherical cavity, the shrinkage of the cylindrical surface section 221 during cooling is larger than that of the cylindrical cavity with taper and the bottom spherical cavity, and the cylindrical surface section 221 can enable the top of the spherical cavity to shrink towards the center direction during shrinkage, so that the grain is easier to demould.
In one possible implementation, the mold bottom 22 is provided with a columnar structure, the bottom of the mold bottom is provided with a columnar boss, and the mounting through hole penetrates through the bottom end of the columnar boss and shares a central axis with the mold bottom 22; that is to say, the installation through hole is arranged on the central axis of the die bottom 22, the installation through hole is arranged from the top center position of the spherical cavity of the die bottom 22, so that the jacking column 23 is arranged centrally, and the stress is uniform when the finished product of the explosive column is jacked on the jacking column.
Optionally, the top column 23 comprises a first column section and a second column section with a top surface being a sphere, the diameter of the second column section is larger than that of the first column section, and the free end of the first column section is provided with threads; the mounting through hole comprises a counter bore in clearance fit with the second column section and a central through hole in clearance fit with the first column section, and the threads are matched with a nut 27 to lock the top column 23 after the first column section passes through the central through hole.
That is, the top column 23 is provided in a two-stage structure, wherein one stage is an upper top portion that can be contacted with the finished grain product 10, i.e., a second column section, and a spherical surface is provided on the top surface of the second column section; the other section is a connecting section connected with the second column section, namely a first column section, and the first column section can fix the top column 23 on the die bottom 22 to realize limit; optionally, in order to fix the top post 23 on the die bottom 22, a thread is provided on the free end of the first post section, and the top post 23 is fastened on the die bottom 22 by connecting the thread with a nut 27; correspondingly, the mounting through hole is in stepped hole type, and comprises a counter bore communicated with the spherical cavity and a central through hole coaxially arranged at the bottom of the counter bore, the second column section is in clearance fit with the counter bore, and the first column section is matched with the central through hole. The threaded portion of the first post section protrudes outside the central through hole, on which a nut 27 is fitted, optionally with a washer 26 at the bottom of the nut, the fixation of the top post 23 being achieved by tightening the nut 27 against the bottom of the post boss.
Optionally, a sealing process is performed between the top post 23 and the mounting through hole. Specifically, an annular groove is formed at the joint of the counter bore and the central through hole, a sealing ring 24 is arranged in the annular groove, the inner wall of the sealing ring 24 is tightly attached to the first column section of the top column 23, sealing is realized, and hot water during heating or cooling water during cooling is prevented from entering the die cavity.
In an alternative embodiment, a through groove 223 is formed in the cylindrical surface of the columnar boss along the radial direction of the columnar boss, a radial through hole is formed in the cylindrical surface of the first column section, a limiting pin 25 is arranged in the radial through hole, and two ends of the limiting pin 25 extend into the through groove 223 and can move up and down in the through groove 223.
Specifically, the through groove 223 is used for limiting when the top column 23 is jacked, and the through groove 223 extends to one end of the axial direction of the top column 23 by a distance which is the maximum distance when the top column 23 is pushed up; optionally, the through groove 223 penetrates to the bottom of the columnar boss, so that the limit pin 25 is conveniently installed in the radial through hole of the first column section, and two ends of the limit pin 25 extend into the through grooves 223 on two sides; alternatively, the width of the through groove 223 is equal to the diameter of the stopper pin 25. After the nut 27 under the top post 23 is removed, the limiting pin 25 can slide up and down along the through groove for a certain distance when the top post 23 is lifted. Through making jack-prop 23 assemble in die bottom 22, spacer pin 25 assembles on jack-prop 23 and puts in logical inslot 223, has prevented that during operation jack-prop 23 from following nut 27 rotation, has also prevented that nut 27 unscrews the overlength after in the drawing of patterns, jack-prop 23 falls out from die bottom 22 to influence the assembly, be unfavorable for the operation.
In one possible implementation method, the die body 21 is provided with a columnar structure, an external thread is arranged at the bottom of the die body 21, an internal thread is arranged at the top of the die bottom 22, and the die body 21 and the die bottom 22 are connected with each other in a matched manner through the external thread and the internal thread.
Specifically, a spigot is arranged at the top of the die bottom 22, an internal thread hole is arranged in the spigot, an external thread opposite to the internal thread hole is arranged on an external cylindrical surface at the bottom of the die body 21, and when the die bottom 22 is arranged on the die body 21, the bottom of the die body 21 is propped against the spigot; optionally, a cylindrical section 221 is provided in the lower part of the spigot. The processing and the disassembly are convenient by adopting a threaded connection mode.
In order to facilitate the threaded connection of the die bottom 22 with the die body 21, a spanner hole 30 is arranged on the outer cylindrical surface of the die bottom 22 to facilitate the tightening of the die bottom 22 on the die body 21.
In order to facilitate the auxiliary movement of the device, a movable hoop 29 which is convenient for the cladding device is arranged on the outer cylindrical surface of the die body 21, and a handle is connected to the movable hoop 29.
In order to facilitate the mounting and positioning of the device during the cladding process, a base 28 is provided at the bottom of the cladding device to ensure the stability of the device, the base 28 is provided in the form of a sleeve, and the mold bottom 22 is placed on top of the base 28.
To facilitate the demolding of the finished grain 10, the cylindrical cavity is formed with a taper that facilitates the demolding of the finished grain 10.
The embodiment of the invention also provides a grain surface coating method, which comprises the following steps:
step 1: cleaning the surface of a die cavity of the grain surface coating device, and uniformly adhering a plurality of positioning convex blocks 13 which are the same as the material of the layer to be coated and have the same thickness on the surface of the grain 12, wherein the outer side surfaces of the positioning convex blocks 13 are in contact with the surface of the die cavity;
step 2: placing the cladding device on a base 28, and heating the cladding device to a set temperature together with a water bath in hot water with the temperature of 45-70 ℃;
step 3: after the heating is finished, pouring a liquid coating material into a die cavity of the coating device, and slowly placing the grain stuck with the positioning lug 13 into the die cavity so that the liquid coating material completely coats the grain 12;
step 4: maintaining the temperature until the liquid coating material is solidified, and then placing the coating device and the base 28 together in a cooling liquid for cooling;
step 5: after cooling is completed, the finished grain 10 is pushed out through the ejector 22 to effect demolding of the product.
The positioning bump 13 in step 1 is a spacer block adhered to the surface of the grain for positioning the thickness of the coating layer, and by setting the positioning bump 13 with the same thickness as the coating layer 11, a space for containing the liquid glass material can be formed between the grain 12 and the mold cavity, and when the liquid glass is solidified, the coating layer 11 with the same thickness is formed on the surface of the grain 12; the positioning bump 13 is made of a coating layer material, and after the liquid coating layer material is solidified, the positioning bump 13 and the solidified coating layer are integrated.
In step 3, slowly placing the grain with the positioning bump 13 attached to the mold cavity so that the liquid glass wraps the grain 12 entirely includes: and a certain force is applied to enable the positioning protruding blocks 13 at the bottom of the explosive column 12 to contact the bottom surface of the die, the liquid coating material overflows upwards under the extrusion force of the explosive column, and finally the explosive column 12 is completely wrapped.
In one possible implementation, the positioning projections 13 are uniformly distributed around the surface of the grain 12, and optionally four positioning projection rows extending onto the bottom sphere are provided in four directions, front, back, left and right, of the grain 12.
Optionally, in step 5, the top post 22 is allowed to move upward by removing the nut 27.
Alternatively, the liquid clad material in the above step may be selected to be liquid plexiglas.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. The grain surface coating device is characterized by comprising a die body, a die bottom and a top column; the die bottom is detachably arranged at the bottom of the die body, and a columnar cavity for accommodating a column part of a finished grain product is formed in the die body; a spherical cavity is arranged in the mold bottom, a mounting through hole for mounting the jacking column is arranged at the bottom of the spherical cavity, the jacking column can move up and down in the mounting through hole, the top surface of the jacking column is a spherical surface, and the spherical surface and the spherical cavity outline jointly define a bottom spherical cavity for accommodating the bottom spherical surface of the finished product of the explosive column; a section of cylindrical surface section with the same diameter as the small end of the columnar cavity is arranged on the die bottom at the joint of the spherical cavity and the columnar cavity, the bottom spherical cavity and the cylindrical surface section jointly form a die cavity for accommodating the finished product of the grain; the bottom of the die bottom is provided with a columnar boss, and the mounting through hole penetrates through the bottom end of the columnar boss and shares a central shaft with the die bottom; the top column comprises a first column section and a second column section with a top surface being a sphere, the diameter of the second column section is larger than that of the first column section, and the free end of the first column section is provided with threads; the mounting through hole comprises a counter bore in clearance fit with the second column section and a central through hole in clearance fit with the first column section, and the threads are matched with nuts to lock the top column after the first column section passes through the central through hole; the cylindrical surface of the columnar boss is provided with a through groove which is arranged along the radial direction of the columnar boss, the cylindrical surface of the first column section is provided with a radial through hole, a limiting pin is arranged in the radial through hole, two ends of the limiting pin extend into the through groove and can move up and down in the through groove, and sealing treatment is carried out between the jacking column and the mounting through hole.
2. The grain surface coating device of claim 1, wherein the die body is provided with a columnar structure, the bottom of the die body is provided with external threads, the top of the die bottom is provided with internal threads, and the die body and the die bottom are connected with the internal threads in a matched manner through the external threads.
3. The grain surface coating device of claim 2, wherein a wrench hole is provided in the outer wall of the die bottom to facilitate tightening of the die bottom onto the die body.
4. The grain surface coating device of claim 2, wherein the outer cylindrical surface of the mold body is provided with a hoop for facilitating movement of the coating device.
5. The grain surface coating device of claim 1, wherein the cylindrical cavity is formed with a taper that facilitates demolding of the finished grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020160.4A CN112062648B (en) | 2020-09-25 | 2020-09-25 | Grain surface coating device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020160.4A CN112062648B (en) | 2020-09-25 | 2020-09-25 | Grain surface coating device and method |
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| CN112062648A CN112062648A (en) | 2020-12-11 |
| CN112062648B true CN112062648B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011020160.4A Active CN112062648B (en) | 2020-09-25 | 2020-09-25 | Grain surface coating device and method |
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| CN106543808A (en) * | 2016-12-09 | 2017-03-29 | 湖北航天化学技术研究所 | It is a kind of to improve the clad silane coupling agent bonding with gas generator propellant powder column and adhering method |
| CN107961467A (en) * | 2017-12-11 | 2018-04-27 | 宜昌及安盾消防科技有限公司 | A kind of full coating unit of aerogel generating agent powder column and method |
| CN109400425A (en) * | 2018-10-25 | 2019-03-01 | 山西北方兴安化学工业有限公司 | A kind of reversed casting die of clad |
| CN212246819U (en) * | 2020-09-25 | 2020-12-29 | 江南工业集团有限公司 | Device for coating surface of explosive column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030047299A1 (en) * | 2001-09-12 | 2003-03-13 | Ching-Wen Ma | Investment molding flask assembly |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1271559A (en) * | 1969-11-13 | 1972-04-19 | Ethyl Corp | Die assembly |
| CN102295496A (en) * | 2010-10-18 | 2011-12-28 | 西安近代化学研究所 | Mould for pressing semi-sphere grain |
| CN104276910A (en) * | 2013-07-22 | 2015-01-14 | 湖北航天化学技术研究所 | Process for forming burning restriction layer of explosive column of gas generating agent |
| CN106543808A (en) * | 2016-12-09 | 2017-03-29 | 湖北航天化学技术研究所 | It is a kind of to improve the clad silane coupling agent bonding with gas generator propellant powder column and adhering method |
| CN107961467A (en) * | 2017-12-11 | 2018-04-27 | 宜昌及安盾消防科技有限公司 | A kind of full coating unit of aerogel generating agent powder column and method |
| CN109400425A (en) * | 2018-10-25 | 2019-03-01 | 山西北方兴安化学工业有限公司 | A kind of reversed casting die of clad |
| CN212246819U (en) * | 2020-09-25 | 2020-12-29 | 江南工业集团有限公司 | Device for coating surface of explosive column |
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| Publication number | Publication date |
|---|---|
| CN112062648A (en) | 2020-12-11 |
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