CN220766863U - Accurate medicine device that presses of two-way combination crowd mould - Google Patents
Accurate medicine device that presses of two-way combination crowd mould Download PDFInfo
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- CN220766863U CN220766863U CN202322507240.8U CN202322507240U CN220766863U CN 220766863 U CN220766863 U CN 220766863U CN 202322507240 U CN202322507240 U CN 202322507240U CN 220766863 U CN220766863 U CN 220766863U
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- combined die
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- 239000003814 drug Substances 0.000 title claims abstract description 28
- 239000002360 explosive Substances 0.000 claims abstract description 86
- 238000003825 pressing Methods 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 24
- 238000011068 loading method Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
The utility model discloses a bidirectional combined group die precise medicine pressing device which comprises a pressing machine bottom plate, guide posts, supporting springs, undershoots, a combined die sleeve, a pressing machine pressing head and an upper punch, wherein the guide posts are symmetrically arranged on two sides of the top surface of the pressing machine bottom plate, the supporting springs are sleeved on the outer walls of the guide posts, connecting plates are arranged at the top ends of the guide posts, the undershoots are arranged in the middle of the top surface of the pressing machine bottom plate, grooves are formed in the outer walls of the top of the undershoots, sealing rubber rings I are sleeved in the grooves, the combined die sleeve is arranged above the undershoots, a fried medicine powder filling area is formed in the middle of the combined die sleeve, and the top ends of the undershoots are sleeved at the bottom of the explosive powder filling area in the middle of the combined die sleeve. The utility model has simple structure and low manufacturing cost, does not need a special host, can be matched with the surgical electrotome host widely used at present, and is convenient, quick, safe and reliable in use.
Description
Technical Field
The utility model belongs to the technical field of explosive column pressing equipment, and particularly relates to a bidirectional combined group die precise explosive pressing device.
Background
Explosive charging in the warhead refers to processing the explosive into a explosive column with a certain shape, a certain strength and a certain density, and fixing the explosive column in the warhead; the explosive can also be directly filled into the warhead to be processed into satisfactory charge, the former is called indirect charge, and the latter is called direct charge. The charging methods commonly used at present are as follows: a pressed charge method, a casting charge method, a step-by-step pressed charge method, a plastic charge method and a casting charge method. The method for loading explosive is to press the granular explosive into the explosive column with required shape and size by using a mould and a press or directly press the granular explosive into an explosive chamber of an elastomer. According to different procedures of loading explosive into the explosive chamber, the explosive loading method can be divided into two forms, namely a explosive column split charging method (indirect press-loading method) and a direct press-loading method. The explosive column split charging method is to load quantitative granular explosive into special mould, press into explosive column with certain shape and certain density, then load the explosive into the explosive chamber of the elastomer, fix with adhesive or other method. In general, the charges such as the projectile body which is not easy to be directly pressed or the detonator booster tube, the expanding tube and the like are charged by a grain split charging method.
The direction of application of pressure is different when pressing the medicine, and the medicine pressing method can be divided into unidirectional medicine pressing and bidirectional medicine pressing. The unidirectional pressing is that one punch applies pressure to the explosive, and the bidirectional pressing is that the upper punch and the lower punch apply pressure to the explosive from two directions. If the ratio of the height to the diameter of the pressed grain is more than 2, bidirectional pressing is needed, so that the axial density difference of the grain can be reduced, and the strength of the grain can be increased. The base of the bidirectional medicine pressing die is designed to be undershoot, and the undershoot play the same role in medicine pressing, and the two ends of the medicine column are applied with basically the same pressure.
If there are more compressed grains, single dies are often combined to design a combined die in order to improve production efficiency. The number of compressed grains at a time is calculated based on the pressure required to compress the individual grains and the total pressure of the press. The combined die can be directly combined on the medicine pressing trolley. In either form of the method, the equipment used is not separated from the press. The traditional Chinese medicine pressing machine is a hydraulic machine, the tonnage of the hydraulic machine varies from several tons to thousands of tons, and the general medicine pressing machine is mainly divided into two types according to the structure, namely a three-beam four-column hydraulic machine, which is one-way pressing, and is divided into an up-moving type and a down-moving type. It consists of two parts of a machine body and a hydraulic system. The machine body part of the hydraulic machine mainly comprises an upper cross beam, a machine column, a movable cross beam, a lower cross beam and a press plunger part. The other is a five-beam four-column hydraulic machine, namely a two-way pressing hydraulic machine, which is an up-and-down double-movement type. In general, a unidirectional press is used to press a powder charge by loading a granular explosive into a cavity or a die and transmitting the pressure by a punch. The pressure loading has gradient in pressure loading pressure and density, the density of the pressed grain is uneven, and as the grain size is increased, the uneven influence on grains with large length-diameter ratio (more than or equal to 2) is more obvious, which is a problem to be considered for precisely loading and loading with high detonation performance requirement. The root cause of the uneven density distribution is that the partial pressures are different when the granular bodies are compressed. The pressure of the pressing medicine is maximum near the punch, and the farther the pressing medicine is away from the punch, the smaller the pressing medicine is. So that the density of the powder grains close to the base is smaller than that of the powder grains at the punch. If a bidirectional press is used for pressing the medicine, the problem of high production cost is brought. In the process of grain pressing, the compaction deformation of loose explosive particles is realized by the mutual sliding of the particles, and the void volume between the particles is continuously reduced. The explosive, which is typically in a loose state, is pressurized to thousands of atmospheres, the pores shrink by a factor of about 10 and the density increases by a factor of about one. Since tiny pores (air holes) remain among the explosive particles in the compressed explosive column, the compressed density of the explosive column can only reach 95% of the theoretical density of the explosive. Therefore, how to realize the bidirectional medicine pressing of large-length-diameter-ratio grains (more than or equal to 2) on a common unidirectional upward moving type press, reduce the production cost, improve the production efficiency, improve the medicine pressing density and the uniformity of density distribution of the grains, ensure the strength of the pressed grains, and avoid the cracks and the caving defects of the grains, thereby becoming the technical problem to be solved urgently.
Disclosure of Invention
The utility model aims to overcome the defects, and provides the bidirectional combined group die precise drug pressing device which is simple to operate, safe and practical, has high strength, good density distribution uniformity, good economy and high production efficiency of pressed drug grains, and avoids the defects of cracks and collapse in the drug grain forming process.
In order to achieve the above design purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a two-way combination crowd mould precision medicine device that presses, includes press bottom plate, guide post, supporting spring, undershoot, combination die sleeve, press pressure head and upper punch, press bottom plate top surface bilateral symmetry is equipped with the guide post, the cover is equipped with supporting spring on the outer wall of guide post, the top of guide post is equipped with the connecting plate, press bottom plate top surface middle part is equipped with the undershoot, set up flutedly on the top outer wall of undershoot, the recess endotheca is equipped with sealed rubber ring I, the top of undershoot is equipped with the combination die sleeve, the fried powder fills the district has been seted up at the combination die sleeve middle part, the top both sides of combination die sleeve are equipped with symmetrical engaging lug, the engaging lug of combination die sleeve top both sides respectively with press bottom plate top surface both sides guide post top connecting plate fixed connection, the top of combination die sleeve is equipped with the press pressure head, the bottom of press pressure head is equipped with the upper punch, set up flutedly on the bottom outer wall of the upper punch, sealed rubber ring II is equipped with in the recess, the top of upper punch is equipped with sealed rubber ring top in the combination die sleeve middle part in the district.
The outer wall of the combined die sleeve is uniformly provided with a plurality of through holes penetrating through the inside of the explosive powder filling area in the middle of the combined die sleeve, and the outer opening of each through hole is provided with a vacuumizing interface in a rotating way.
And a coil pipe is wound on the outer wall of the combined die sleeve.
The bottom of the combined die sleeve is provided with a temperature controller.
The explosive powder filling area in the middle of the combined die sleeve can be arranged into a single group or a plurality of groups according to production requirements.
Compared with the prior art, the utility model has the following advantages: the coil pipe wound on the outer wall of the die sleeve is internally provided with heating hot water or cooling water when in operation, and the temperature controller arranged below the combined die sleeve is used for firstly feeding the hot water at 60-70 ℃ into the coil pipe in the process of pressing the explosive column, the explosive column in the die sleeve is firstly heated at high temperature, the heat preservation time is 10min, then the coil pipe is fed with the low-temperature cooling water at 5-15 ℃ for low-temperature cooling, the heat preservation time is 10min, and finally the heating-cooling process is repeated for one time, thus the cycle is repeated for two times, the explosive column is cracked and burst after the explosive column is removed due to the fact that the explosive particles are subjected to friction, extrusion and movement to generate temperature rise, the thermal stress of the explosive column after the die is removed can be fully released in advance by adopting the stress release technology of heating-cooling temperature cycle impact, the method has the advantages that cracks and collapse of the explosive column due to thermal stress release after die withdrawal are avoided, the strength, the quality and the yield of the explosive column are improved, a vacuumizing interface is arranged on the outer wall of the combined die sleeve, a vacuum pump is started before pressing under the condition that sealing rings are arranged at the upper punching end part and the lower punching end part, the die cavity is vacuumized to enable the vacuum degree to be lower than 0.1KPa and continuously maintain pressure, the explosive in the cavity of the die sleeve is continuously vacuumized in the pressing process, the explosive is pressed in the vacuum state, micro holes (air holes) among the explosive particles can be effectively eliminated, the average density and the distribution uniformity of the explosive column are effectively improved, the explosive density of the explosive column can be improved from 95% of the theoretical density of the explosive by adopting the technical measures, the explosive density is improved to be more than 99.5% of the theoretical density of the explosive, the internal density distribution difference of the explosive column is improved from more than or equal to 5% to less than or equal to 0.5%, the uniformity of the density inside the grain is obviously improved. The prepared grain has the advantages of large length-diameter ratio (more than or equal to 2), high density, uniform distribution, high strength and the like. The utility model has the advantages of simple structure, high strength, good uniformity of density distribution, good economy and high production efficiency of the pressed explosive column, effectively avoids the defects of cracks and collapse in the forming process of the explosive column, can realize simultaneous bidirectional explosive pressing of a plurality of groups of dies on a common unidirectional press, has wide application range, realizes the bidirectional group die precise pressing of a plurality of explosive columns with large length-diameter ratio, solves the technical problems of influencing the explosive pressing density and the production efficiency of the explosive column, and meets the charging requirement of a conventional high-efficiency damaged ammunition combat part.
Drawings
FIG. 1 is a schematic diagram of a two-way combined group die precision drug pressing device according to the present utility model;
FIG. 2 is a schematic top view of a two-way combined group die precision pressing device according to the present utility model;
FIG. 3 is a schematic view of the structure of a bidirectional precision press combined group die (after pressing a grain) according to the present utility model;
FIG. 4 is a schematic diagram of the structure of the bidirectional precision pressing combination group die (after the grain is formed) in the die withdrawal mode;
FIG. 5 is a schematic diagram of the stroke of the pressure head in the process of molding the two-way precise drug-molding combination group;
FIG. 6 is a schematic diagram of the stroke and the running speed of the press head of the two-way precise medicine pressing combined group die according to the utility model.
Reference numerals illustrate: the device comprises a 1-press bottom plate, a 2-guide column, a 3-supporting spring, a 4-undershoot, a 5-combined die sleeve, a 6-press pressure head, a 7-undershoot, an 8-connecting plate, a 9-sealing rubber ring I, a 10-explosive powder filling area, a 11-connecting lug, a 12-sealing rubber ring II, a 13-vacuumizing interface, a 14-coil pipe and a 15-temperature controller.
Detailed Description
The following detailed description of specific embodiments of the utility model refers to the accompanying drawings. As shown in fig. 1-6: the utility model provides a two-way combination crowd mould precision medicine device that presses, includes press bottom plate 1, guide post 2, supporting spring 3, undershoot 4, combination die sleeve 5, press pressure head 6 and upper punch 7, press bottom plate 1 top surface bilateral symmetry is equipped with guide post 2, the cover is equipped with supporting spring 3 on the outer wall of guide post 2, the top of guide post 2 is equipped with connecting plate 8, press bottom plate 1 top surface middle part is equipped with undershoot 4, set up flutedly on the top outer wall of undershoot 4, the recess endotheca is equipped with sealing rubber ring I9, the top of undershoot 4 is equipped with combination die sleeve 5, the combination die sleeve 5 middle part has been seted up fried powder and has been packed district 10, the top suit of undershoot 4 in the bottom in the explosive powder packing district 10 in the middle part of combination die sleeve 5, the top both sides of combination die sleeve 5 are equipped with symmetrical engaging lug 11, the engaging lug 11 of combination die sleeve 5 top both sides respectively with the connecting plate 8 on press bottom plate 1 top of guide post 2, the top of combination die sleeve 5 top is equipped with the top 6, the top of combination die sleeve 6 is equipped with sealing rubber ring I9, the top of combination die sleeve 7 is equipped with sealing ring II, the top of the top is equipped with the top of the cover 7, seal ring is equipped with the top of sealing ring II.
The outer wall of the combined die sleeve 5 is uniformly provided with a plurality of through holes penetrating through the inside of the explosive powder filling area 10 in the middle of the combined die sleeve 5, and the outer opening of each through hole is provided with a vacuumizing interface 13 in a rotating way.
The outer wall of the combined die sleeve 5 is wound with a coil pipe 14.
The bottom of the combined die sleeve 5 is provided with a temperature controller 15.
The explosive powder filling area 10 in the middle of the combined die sleeve 5 can be arranged into a single group or multiple groups according to production requirements.
The utility model is used when: the combined die sleeve 5 is made to be free floating by adopting a suspension supporting structure of a two-stage guide post 2 and a supporting spring 3 on a press workbench, and two groups of punches of an upper punch 7 and a lower punch 4 are combined, so that bidirectional explosive pressing can be realized on a common unidirectional press, when the pressing begins, the press pressing head 6 moves downwards to press the explosive in the upper punch 7 and the explosive filling area 10 in the middle part of the combined die sleeve 5, the press pressing head 6 firstly presses the upper punch 7 to descend, at the moment, the upper punch 7 and the combined die sleeve 5 relatively displace, the density of the upper part of the explosive in the explosive filling area 10 is increased along with the continuous descending of the upper punch 7, the friction force between the explosive and the inner wall of the explosive filling area 10 of the combined die sleeve 5 is gradually increased, and when the friction force between the explosive and the inner wall of the explosive filling area 10 of the combined die sleeve 5 is larger than the supporting force of the supporting spring of the combined die sleeve 5, the upper punch 7 head drives the combined die sleeve 5 to move downwards simultaneously, the combined die sleeve and the lower punch 4 head generate relative displacement, the lower punch 4 head is caused to pressurize the explosive upwards, when the friction force generated by the lower part of the explosive column and the inner wall of the explosive powder filling area 10 of the combined die sleeve is larger than the friction force on the upper part, the upper punch 7 presses the explosive downwards again, the process is repeated until the explosive is completely pressed, the upper punch 7 head and the lower punch 4 head pressurize the explosive in the die sleeve from the upper direction and the lower direction respectively, and therefore bidirectional explosive pressing is realized on a common unidirectional press, and in the pressing process, the vacuum pumping interface 13 is uniformly distributed on the outer wall of the combined die sleeve 5, and the coiled pipe 14 wound on the outer wall of the combined die sleeve 5 pumps the explosive powder in the explosive powder filling area 10 and heats and cools the explosive powder filling area 10 to avoid the defects of cracks and breakouts in the explosive column forming process.
Claims (5)
1. The utility model provides a accurate medicine device that presses of two-way combination crowd mould which characterized in that: the automatic explosive powder filling device comprises a bottom plate of a press, guide posts, supporting springs, undershoots, a combined die sleeve, a press pressing head and an upper punch, wherein the guide posts are symmetrically arranged on two sides of the top surface of the bottom plate of the press, the supporting springs are sleeved on the outer walls of the guide posts, connecting plates are arranged on the top ends of the guide posts, the undershoots are arranged in the middle of the top surface of the bottom plate of the press, grooves are formed in the outer walls of the top of the undershoots, sealing rubber rings I are sleeved in the grooves, the combined die sleeve is arranged above the undershoots, explosive powder filling areas are formed in the middle of the combined die sleeve, symmetrical connecting lugs are arranged on two sides of the top end of the combined die sleeve and fixedly connected with the connecting plates on the top ends of the guide posts on two sides of the top surface of the bottom plate of the press respectively, the press pressing head is arranged above the combined die sleeve, the upper punch is arranged at the bottom of the upper punch, grooves are formed in the outer walls of the bottom of the upper punch, sealing rubber rings II are sleeved in the grooves, and the top of the combined die sleeve is sleeved on the top of the explosive powder filling areas.
2. The bi-directional combined group die precision pressing device as defined in claim 1, wherein: the outer wall of the combined die sleeve is uniformly provided with a plurality of through holes penetrating through the inside of the explosive powder filling area in the middle of the combined die sleeve, and the outer opening of each through hole is provided with a vacuumizing interface in a rotating way.
3. The bi-directional combined group die precision pressing device as defined in claim 1, wherein: and a coil pipe is wound on the outer wall of the combined die sleeve.
4. The bi-directional combined group die precision pressing device as defined in claim 1, wherein: the bottom of the combined die sleeve is provided with a temperature controller.
5. The bi-directional combined group die precision pressing device as defined in claim 1, wherein: the explosive powder filling area in the middle of the combined die sleeve can be arranged into a single group or a plurality of groups according to production requirements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022233888023 | 2022-12-17 | ||
| CN202223388802 | 2022-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220766863U true CN220766863U (en) | 2024-04-12 |
Family
ID=90618595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322507240.8U Active CN220766863U (en) | 2022-12-17 | 2023-09-15 | Accurate medicine device that presses of two-way combination crowd mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220766863U (en) |
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2023
- 2023-09-15 CN CN202322507240.8U patent/CN220766863U/en active Active
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