CN111483168A - Tabletting mechanism of rotary tablet press - Google Patents
Tabletting mechanism of rotary tablet press Download PDFInfo
- Publication number
- CN111483168A CN111483168A CN202010405699.5A CN202010405699A CN111483168A CN 111483168 A CN111483168 A CN 111483168A CN 202010405699 A CN202010405699 A CN 202010405699A CN 111483168 A CN111483168 A CN 111483168A
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- plate
- groove
- die
- corrugated pipe
- template
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- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 238000004080 punching Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000009475 tablet pressing Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/32—Discharging presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention relates to the field of tablet punch forming equipment and discloses a tablet pressing mechanism of a rotary tablet press, which comprises a tablet pressing support plate, an upper template and a lower template, wherein the tablet pressing support plate, the upper template and the lower template are arranged on a machine table, the upper template and the lower template are symmetrically arranged on the upper side and the lower side of the tablet pressing support plate, a plurality of stamping dies are arranged on the outer edges of the upper template and the lower template, and tablet pressing dies corresponding to the stamping dies are arranged on the outer edges of the tablet. Through the upper sleeve plate, the structural design of lower nest plate and bellows, in preforming punching press working process, it pushes down the bellows and moves down to go up the pinch roller, utilize atmospheric pressure to act on the die and move down, make the die and lead to can not receive extra frictional force between two walls of groove, the top of going up pinch roller and die has been avoided among the current rotary tablet press is in the contact pushing down in-process, make the degree of wear between the side of die and the cope match-plate pattern increase easily, to the terminal structure of die cause the problem of deformation, and then ensured the quality of the long-term stamping forming of preforming product.
Description
Technical Field
The invention relates to the field of tablet punch forming equipment, in particular to a tablet pressing mechanism of a rotary tablet press.
Background
The rotary tablet press is a device which can press powder and small particles into round or special-shaped tablets with the particle size of less than 12 mm, and is common equipment in the prior biological pharmacy field.
However, the existing tablet pressing mechanism of the rotary tablet press is in the working process, the top ends of the upper pressure wheel and the punch die in the rotary tablet press are in the contact pressing process, the contact stress points of the upper pressure wheel and the punch die are changed along with the movement of the position of the upper pressure wheel, so that the upper pressure wheel is in contact with and separated from the top end of the punch die, a certain angle is formed between the pressure direction applied by the upper pressure wheel to the tail end of the punch die and the stress surface at the top end of the punch die, after the rotary tablet press is used for a long time, the abrasion degree between the side surface of the punch die and the upper template is easily increased, the problem of deformation caused by the structure at the tail end of the punch die is solved, the quality of long-term punch forming of a tablet product is influenced, and unqualified tablets are mixed.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides a tablet pressing mechanism of a rotary tablet press, which has the advantages of high tablet press forming quality and efficiency and solves the problems in the background technology.
The invention provides the following technical scheme: a tabletting mechanism of a rotary tablet press comprises a tabletting support plate, an upper template and a lower template which are arranged on a machine table, wherein the upper template and the lower template are symmetrically arranged on the upper side and the lower side of the tabletting support plate, a plurality of stamping dies are respectively arranged on the outer edges of the upper template and the lower template, tabletting dies corresponding to the stamping dies are arranged on the outer edges of the tabletting support plate, an upper sleeve plate positioned above the upper template and a lower sleeve plate positioned below the lower template are arranged on the machine table, the shapes and the sizes of the upper sleeve plate and the lower sleeve plate are the same, a plurality of through grooves which are arranged at equal intervals are arranged on the outer edges of the upper sleeve plate and the lower sleeve plate, each through groove respectively corresponds to one stamping die, a sliding piston positioned in each through groove is fixedly connected to the top end of the stamping die, the outer edge of the sliding piston is attached to the inner wall of the through groove, corrugated pipes positioned outside the through, still be equipped with on the board and drive rotatory back shaft, fixedly connected with is located the top of upper lagging on the back shaft and goes up the pinch roller, and fixedly connected with is located the lower pinch roller of lower lagging below on the back shaft, goes up the outer edge of pinch roller and the top contact of bellows.
Preferably, the corrugated pipe is made of metal corrugated pipe, a one-way air inlet is formed in the top of the corrugated pipe, a threaded sleeve is fixedly connected to the bottom of the corrugated pipe and is in threaded sleeve connection with a through groove in the upper sleeve plate, and a through groove is formed in the middle of the threaded sleeve.
Preferably, the height value of the corrugated pipe is greater than that of the through groove, and the height value of the through groove is greater than that of the tabletting carrier plate.
Preferably, reset springs movably sleeved on the stamping die are respectively arranged between the upper template and the upper sleeve plate and between the lower template and the lower sleeve plate, the upper template and the sliding piston are respectively movably connected with two ends of each reset spring, the lower template and the sliding piston are respectively movably connected with two ends of each reset spring, and the outer edge of each reset spring is not in contact with the inner wall of the through groove.
The invention has the following beneficial effects:
according to the tabletting mechanism of the rotary tablet press, through the structural design of the upper sleeve plate, the lower sleeve plate and the corrugated pipe, in the working process of tabletting and stamping, the upper pressing wheel presses the corrugated pipe to move downwards, and the air pressure acts on the stamping die to move downwards, so that no additional friction force is applied between the stamping die and two walls of the through groove, the problems that the abrasion degree between the side surface of the stamping die and the upper mold plate is increased easily and the structure at the tail end of the stamping die is deformed in the contact and pressing process of the upper pressing wheel and the top end of the stamping die in the conventional rotary tablet press are solved, and the quality of long-term punch forming of a tabletting product is; and, wearing and tearing appear between the inner wall that slides piston and logical groove, when leading to the laminating degree to descend, the atmospheric pressure of logical groove inner chamber is revealed, can't make the die of this department move down and make preforming product stamping forming, thereby the preforming product stamping forming that has avoided the quality to be unqualified, sneak into the phenomenon in the qualified preforming product, and then need not the preforming quality detection and the screening in later stage, the overall quality and the preparation efficiency of preforming product have been improved, and simultaneously, the direct observation of can be convenient for goes to the motionless of die, and the die of this department of confirming wearing and tearing problem appears, so that in time change the die, with the punching press efficiency of guarantee preforming.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a structural upper nest plate of the present invention;
fig. 3 is a top view of a bushing plate in the structure of the present invention.
In the figure: 1. pressing a substrate; 2. mounting a template; 3. an upper sleeve plate; 301. a through groove; 4. a lower template; 5. a lower sleeve plate; 6. punching a die; 601. a sliding piston; 602. a return spring; 7. a bellows; 701. a threaded sleeve; 702. a one-way air inlet; 8. a support shaft; 9. an upper pinch roller; 10. and a lower pinch roller.
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.
Referring to fig. 1-3, a tablet pressing mechanism of a rotary tablet press comprises a tablet pressing carrier plate 1, an upper template 2 and a lower template 4 mounted on a machine platform, wherein the upper template 2 and the lower template 4 are symmetrically mounted on the upper side and the lower side of the tablet pressing carrier plate 1, a circle of a plurality of stamping dies 6 arranged at equal intervals are movably sleeved on the outer edges of the upper template 2 and the lower template 4, a plurality of tablet pressing dies corresponding to the stamping dies 6 one by one are arranged on the outer edge of the tablet pressing carrier plate 1, one end of the stamping die 6 on the lower template 4 extends into the tablet pressing dies, an upper template 3 positioned above the upper template 2 and a lower template 5 positioned below the lower template 4 are fixedly mounted on the machine platform, the upper template 3 and the lower template 5 have the same shape and size, a plurality of through grooves 301 arranged at equal intervals are formed on the outer edges of the upper template 3 and the lower template 5, and each through groove 301 corresponds to, the top end of the punch die 6 is fixedly connected with a sliding piston 601 positioned in the through groove 301, the outer edge of the sliding piston 601 is attached to the inner wall of the through groove 301, the top of the upper sleeve plate 3 and the bottom of the lower sleeve plate 5 are both provided with corrugated pipes 7 positioned outside the through groove 301, a machine table is provided with a supporting shaft 8 capable of driving to rotate, the supporting shaft 8 is used for pressing the support plate 1, the upper die plate 2, the lower die plate 4, the upper sleeve plate 3 and the lower sleeve plate 5 to be movably sleeved, an upper press wheel 9 positioned above the upper sleeve plate 3 is fixedly connected to the supporting shaft 8, a lower press wheel 10 positioned below the lower sleeve plate 5 is fixedly connected to the supporting shaft 8, the outer edge of the upper press wheel 9 is contacted with the top of the corrugated pipes 7, the supporting shaft 8 is driven to rotate by a driving motor, so that the upper press wheel 9 rotates around the supporting shaft 8, and in the rotating, the air pressure in the cavity between the corrugated pipe 7 and the through groove 301 acts on the sliding piston 601 on the upper template 2, so that the sliding piston 601 on the upper template 2 drives the punch die 6 to move downwards, one end of each punch die 6 performs tabletting work in a tabletting mold on the tabletting support plate 1, the air pressure acts on the punch die 6 to move downwards, so that no extra friction force is applied between the punch die 6 and two walls of the through groove 301, the problem that a certain angle is formed between the pressure direction applied by the upper press wheel 9 to the tail end of the punch die 6 and the force-bearing surface at the top end of the punch die 6 when the upper press wheel 9 is just contacted with and separated from the top end of the punch die 6 when the upper press wheel 9 is contacted with and pressed down with the top end of the punch die 6 in the existing rotary tabletting machine is avoided, and after long-term use, the degree of abrasion between the side surface of the punch die 6 and the upper template 2 is easily increased, the problem of deformation is caused to the structure at the end of punch die 6, and then the quality of the long-term stamping forming of preforming product has been ensured, and, wearing and tearing appear between sliding piston 601 and the inner wall that leads to groove 301, when leading to the laminating degree to descend, the atmospheric pressure that leads to the groove 301 inner chamber is revealed, can't make this punch die 6 of department move down make preforming product stamping forming, thereby the unqualified preforming product stamping forming of quality has been avoided, sneak into in the qualified preforming product, the preforming that need not the later stage detects, the overall quality of preforming product has been improved, and simultaneously, the direct observation to punch die 6's motionless action can be convenient for, and the wear problem appears in punch die 6 of this department of confirming, so that the punch die is changed in time.
Wherein, the material of the corrugated pipe 7 is a metal corrugated pipe, so that the corrugated pipe 7 is always in a state of up-down compression and extension, thereby ensuring that the tabletting mechanism stably performs the stamping forming work of tabletting products, the top of the corrugated pipe 7 is provided with a one-way air inlet 702, the bottom of the corrugated pipe 7 is fixedly connected with a threaded sleeve 701, the threaded sleeve 701 is in threaded sleeve joint with a through groove 301 on an upper sleeve plate 3, the middle part of the threaded sleeve 701 is provided with a through groove, the threaded sleeve 701 is in threaded sleeve joint with the through groove 301, thereby ensuring the sealing performance of a cavity above a sliding piston 601 in the through groove 301, thereby ensuring that the sliding piston 601 stably moves down to perform the stamping forming work of the tabletting products under the action of air pressure when the corrugated pipe 7 is compressed, the air is filled into the corrugated pipe 7 through the threaded sleeve 701, the air pressure strength, thereby being convenient for adjusting the downward movement distance of the punch die 6 during punching and further controlling the punching thickness of the pressing sheet.
The height value of the corrugated pipe 7 is greater than that of the through groove 301, and the height value of the through groove 301 is greater than that of the tabletting carrier plate 1, so that the compression of the corrugated pipe 7 can ensure that one end of the stamping die 6 acts on powder in the tabletting mold, and the stamping forming of tabletting is ensured.
Wherein, between cope match-plate pattern 2 and the upper jacket board 3, be equipped with the reset spring 602 of activity suit on die 6 between lower bolster 4 and the lower jacket board 5 respectively, and cope match-plate pattern 2 and sliding piston 601 respectively with the both ends swing joint of reset spring 602, lower bolster 4 and sliding piston 601 respectively with the both ends swing joint of reset spring 602, reset spring 602's outer edge and the inner wall that leads to groove 301 contactless, utilize the spring action of reset spring 602, be convenient for after preforming punching press, die 6 resets with sliding piston 601, so that next time stamping die packs and carries out the punching press action next time.
In the tablet punch forming process, firstly, the supporting shaft 8 is driven to rotate by the driving motor, when the upper pressing wheel 9 moves to a corrugated pipe 7, the corrugated pipe 7 is compressed, the sliding piston 601 moves downwards under the action of air pressure in the corrugated pipe 7, the stamping die 6 on the upper template 2 and the stamping die 6 on the lower template 4 interact in a tabletting die to perform tabletting and stamping, and after the stamping is finished, the lower pressing wheel 10 below the lower sleeve plate 5 acts on the corrugated pipe 7 at the position, so that the stamping die 6 on the lower template 4 moves upwards to eject the formed tabletting and stamping die.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a rotary tablet press's preforming mechanism, is including installing preforming support plate (1) on the board, cope match-plate pattern (2), lower bolster (4), and the upper and lower both sides in preforming support plate (1) are installed to cope match-plate pattern (2) and lower bolster (4) symmetry, and the outer edge of cope match-plate pattern (2) and lower bolster (4) all is equipped with a plurality of dies (6), and the outer edge of preforming support plate (1) is equipped with the preforming mould that corresponds with die (6), its characterized in that: the machine table is provided with an upper sleeve plate (3) positioned above an upper template (2) and a lower sleeve plate (5) positioned below a lower template (4), the upper sleeve plate (3) and the lower sleeve plate (5) are identical in shape and size, the outer edges of the upper sleeve plate (3) and the lower sleeve plate (5) are provided with a plurality of through grooves (301) which are arranged at equal intervals, each through groove (301) is respectively in one-to-one correspondence with one punching die (6), the top end of each punching die (6) is fixedly connected with a sliding piston (601) positioned inside each through groove (301), the outer edge of each sliding piston (601) is attached to the inner wall of each through groove (301), the top of the upper sleeve plate (3) and the bottom of the lower sleeve plate (5) are respectively provided with a corrugated pipe (7) positioned outside each through groove (301), a supporting shaft (8) capable of driving rotation is further arranged on the machine table, the supporting shaft (8) is fixedly connected with an upper pressing wheel (9) positioned above the upper sleeve, and a lower pinch roller (10) positioned below the lower sleeve plate (5) is fixedly connected to the supporting shaft (8), and the outer edge of the upper pinch roller (9) is in contact with the top of the corrugated pipe (7).
2. A tabletting mechanism for a rotary tablet press according to claim 1, wherein: the corrugated pipe is characterized in that the corrugated pipe (7) is made of a metal corrugated pipe, a one-way air inlet (702) is formed in the top of the corrugated pipe (7), a threaded sleeve (701) is fixedly connected to the bottom of the corrugated pipe (7), the threaded sleeve (701) is in threaded sleeve connection with a through groove (301) in the upper sleeve plate (3), and a through groove is formed in the middle of the threaded sleeve (701).
3. A tabletting mechanism for a rotary tablet press according to claim 1, wherein: the height value of the corrugated pipe (7) is greater than that of the through groove (301), and the height value of the through groove (301) is greater than that of the tabletting carrier plate (1).
4. A tabletting mechanism for a rotary tablet press according to claim 1, wherein: be equipped with reset spring (602) that the activity suit was on die (6) between cope match-plate pattern (2) and upper cover plate (3), between lower bolster (4) and lower cover plate (5) respectively, and cope match-plate pattern (2) and slip piston (601) respectively with the both ends swing joint of reset spring (602), lower bolster (4) and slip piston (601) respectively with the both ends swing joint of reset spring (602), and the outer edge of reset spring (602) and the inner wall of leading to groove (301) contactless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010405699.5A CN111483168B (en) | 2020-05-14 | 2020-05-14 | Tabletting mechanism of rotary tablet press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010405699.5A CN111483168B (en) | 2020-05-14 | 2020-05-14 | Tabletting mechanism of rotary tablet press |
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| Publication Number | Publication Date |
|---|---|
| CN111483168A true CN111483168A (en) | 2020-08-04 |
| CN111483168B CN111483168B (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010405699.5A Active CN111483168B (en) | 2020-05-14 | 2020-05-14 | Tabletting mechanism of rotary tablet press |
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| CN (1) | CN111483168B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580649A (en) * | 2021-07-20 | 2021-11-02 | 江苏祥瑞药业有限公司 | Tabletting equipment is used in production of metformin hydrochloride sustained-release tablet convenient to thresh |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133438Y (en) * | 1992-05-16 | 1993-05-19 | 中国科学院固体物理研究所 | Vacuum powder formed press |
| US20050095310A1 (en) * | 2002-04-09 | 2005-05-05 | Hans Kramer | Rotary tablet press comprising a die sealing element and corresponding die sealing element |
| CN101722668A (en) * | 2009-11-26 | 2010-06-09 | 北京国药龙立科技有限公司 | High speed tablet press |
| CN207889196U (en) * | 2017-12-18 | 2018-09-21 | 北京新龙立科技有限公司 | A kind of tablet press machine |
| CN108773057A (en) * | 2018-06-20 | 2018-11-09 | 桂峰 | A kind of plastic plate diel of environmental protection scientific equipment |
| CN109264453A (en) * | 2018-09-20 | 2019-01-25 | 重庆市开州区三中印务有限公司 | A kind of several pages of devices of printing |
| CN208452381U (en) * | 2018-07-05 | 2019-02-01 | 江西省特邦动物药业有限公司 | A kind of hand-rail type veterinary drug preforming device |
| CN208927269U (en) * | 2018-02-08 | 2019-06-04 | 湖北医药学院 | A kind of syringe with expansion corrugated pipe |
| CN110524941A (en) * | 2019-09-11 | 2019-12-03 | 山东康富森生物科技有限公司 | It is a kind of for producing the tablet press machine of tablet |
| CN110695184A (en) * | 2019-10-25 | 2020-01-17 | 嵊州月明模具科技有限公司 | Blanking die equipment capable of reducing workpiece deformation |
-
2020
- 2020-05-14 CN CN202010405699.5A patent/CN111483168B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133438Y (en) * | 1992-05-16 | 1993-05-19 | 中国科学院固体物理研究所 | Vacuum powder formed press |
| US20050095310A1 (en) * | 2002-04-09 | 2005-05-05 | Hans Kramer | Rotary tablet press comprising a die sealing element and corresponding die sealing element |
| CN101722668A (en) * | 2009-11-26 | 2010-06-09 | 北京国药龙立科技有限公司 | High speed tablet press |
| CN207889196U (en) * | 2017-12-18 | 2018-09-21 | 北京新龙立科技有限公司 | A kind of tablet press machine |
| CN208927269U (en) * | 2018-02-08 | 2019-06-04 | 湖北医药学院 | A kind of syringe with expansion corrugated pipe |
| CN108773057A (en) * | 2018-06-20 | 2018-11-09 | 桂峰 | A kind of plastic plate diel of environmental protection scientific equipment |
| CN208452381U (en) * | 2018-07-05 | 2019-02-01 | 江西省特邦动物药业有限公司 | A kind of hand-rail type veterinary drug preforming device |
| CN109264453A (en) * | 2018-09-20 | 2019-01-25 | 重庆市开州区三中印务有限公司 | A kind of several pages of devices of printing |
| CN110524941A (en) * | 2019-09-11 | 2019-12-03 | 山东康富森生物科技有限公司 | It is a kind of for producing the tablet press machine of tablet |
| CN110695184A (en) * | 2019-10-25 | 2020-01-17 | 嵊州月明模具科技有限公司 | Blanking die equipment capable of reducing workpiece deformation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580649A (en) * | 2021-07-20 | 2021-11-02 | 江苏祥瑞药业有限公司 | Tabletting equipment is used in production of metformin hydrochloride sustained-release tablet convenient to thresh |
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| Publication number | Publication date |
|---|---|
| CN111483168B (en) | 2021-12-03 |
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Effective date of registration: 20211117 Address after: 252000 No.69 Huaihe Road, Liaocheng hi tech Industrial Development Zone, Shandong Province Applicant after: Liaocheng Ruili Machinery Equipment Co., Ltd Address before: 315000 chaijiacao No. 1, Jiangdong District, Ningbo City, Zhejiang Province Applicant before: Zhou Bin |
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