CN215241678U - Municipal administration room is built with hollow plate extrusion machine - Google Patents
Municipal administration room is built with hollow plate extrusion machine Download PDFInfo
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- CN215241678U CN215241678U CN202120746181.8U CN202120746181U CN215241678U CN 215241678 U CN215241678 U CN 215241678U CN 202120746181 U CN202120746181 U CN 202120746181U CN 215241678 U CN215241678 U CN 215241678U
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- 238000001125 extrusion Methods 0.000 title claims abstract description 141
- 238000003756 stirring Methods 0.000 claims abstract description 99
- 230000007246 mechanism Effects 0.000 claims abstract description 97
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 25
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000007723 transport mechanism Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 208000032765 Device extrusion Diseases 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012257 stirred material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a hollow plate makes technical field, specifically is a municipal administration room is built and is used hollow plate extrusion molding machine, including unable adjustment base, for unable adjustment base inside fixed movable mounting's transmission device, for the extrusion die of transmission device fixed surface installation, for transmission device top fixed mounting go up extrusion mechanism and for transmission device bottom fixed mounting's lower extrusion mechanism, the last fixed surface of unable adjustment base one side installs rabbling mechanism. The utility model has the advantages that: by the arrangement of the stirring mechanism, the problems that the formed product is poor in forming effect and the stirring effect of the existing stirring device is not good due to the fact that most of the concrete which is stirred well before is adopted for extrusion forming in the working process are solved; through the cooperation of the extrusion die, the transmission mechanism, the upper extrusion mechanism and the lower extrusion mechanism, the problem that the quality of the manufactured hollow plate is not ideal is solved.
Description
Technical Field
The utility model relates to a hollow plate makes technical field, especially a municipal administration room is built and is used hollow plate extrusion molding machine.
Background
The hollow slab is characterized in that the hollow slab is formed by concrete pouring, the cross section of the slab is made into a hollow slab, the hollow slab is lighter than a solid slab with the same span, the hollow slab is convenient to transport and install, the building height is smaller than that of a T-shaped beam with the same span, therefore, the hollow slab is used more in a small-span bridge, the middle of the hollow slab is hollowed in various forms, and an extrusion molding machine is required for manufacturing the hollow slab.
The current municipal administration room is built with hollow core plate extrusion moulding machine's shortcoming is:
1. the existing extrusion molding machine for the hollow slab for the municipal building is mostly formed by extrusion by adopting the previously stirred concrete in the working process, the molding effect of the manufactured product is poor, and the stirring effect of the existing stirring device is not good;
2. the extrusion molding machine of the existing hollow slab for municipal house construction has insufficient extrusion of the existing mechanism when the extrusion molding machine works, so that the quality of the manufactured hollow slab is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, improve the overall structure of the device, increase the working flow of integrating stirring and extrusion, and simultaneously improve the stirring device, thereby preventing the problems that the molding effect of the produced product is poor and the stirring effect of the existing stirring device is not good because the prior stirred concrete is mostly adopted for extrusion molding in the working process; the extrusion structure is improved, and the problem that the quality of the manufactured hollow plate is not ideal due to insufficient extrusion of the existing mechanism during the extrusion molding is solved.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a municipal administration room is built and is used hollow slab extrusion moulding machine, includes unable adjustment base, for unable adjustment base inside fixed movable mounting's transmission mechanism, for the extrusion die of transmission mechanism upper surface fixed mounting, for the last extrusion mechanism of transmission mechanism top fixed mounting and for the lower extrusion mechanism of transmission mechanism bottom fixed mounting, the last fixed surface of unable adjustment base one side installs rabbling mechanism.
Optionally, a rotating motor convenient for the transmission mechanism to move is fixedly installed inside the fixed base, and the rotating motor inside the fixed base is movably connected with the inner surface of the transmission mechanism;
the upper surface of the fixed base is fixedly provided with a support which is convenient for the fixed installation of the stirring mechanism, and the bottom of the other side of the stirring mechanism is fixedly provided with a fixed support which surrounds the outside of the transmission mechanism.
Optionally, transmission device be two sets of transmission band symmetric distribution in the inside both sides of unable adjustment base, the inside rotation motor of unable adjustment base is a dual output and rotates the motor, two sets of transmission device respectively swing joint with rotate on the output shaft at motor both ends.
Optionally, the extrusion die is fixedly installed on the upper surface of the transmission mechanism, and the extrusion die comprises a die structure convenient for hollow plate molding, a movable pressing plate movably installed at the bottom of the extrusion die, a sliding groove convenient for the movable pressing plate to move up and down, and an expansion spring fixedly installed inside the sliding groove.
Optionally, the upper extrusion mechanism includes an inverted L-shaped fixed support fixedly mounted on the ground on one side of the transmission mechanism, a telescopic cylinder fixedly mounted relative to the lower surface of the top of the fixed support, and an upper extrusion plate fixedly mounted relative to the lower surface of the telescopic cylinder;
the lower extrusion mechanism comprises a telescopic cylinder fixedly arranged on the ground at the bottom of the transmission mechanism and a lower extrusion plate fixedly arranged relative to the upper surface of the telescopic cylinder.
Optionally, the stirring mechanism includes a rotating motor fixedly mounted on the support on the upper surface of the fixed base, a stirring barrel fixedly mounted with the rotating motor, a stirring rotating shaft movably connected with the inside of the stirring barrel, and a stirring motor fixedly connected with the other side of the stirring rotating shaft;
the rotation motor of agitator one side can drive reciprocating rotation about the agitator carries out, and turned angle is less than 45 degrees simultaneously, the agitator motor of stirring pivot opposite side can drive the stirring pivot carries out 360 degrees rotatory stirring, the feed opening that the material of being convenient for got into is seted up to the upper surface of agitator, the bottom fixed mounting of agitator has the solenoid valve that is convenient for carry out the unloading to the material after the stirring finishes.
Optionally, the telescopic spring is located inside the chute, and the other side of the telescopic spring is fixedly connected with the movable pressing plate;
the movable pressing plate is movably connected inside the sliding groove, the telescopic spring is only in one state, namely in a compression state influenced by the movable pressing plate, and meanwhile, the telescopic spring always gives upward force to the movable pressing plate in one direction.
Optionally, the upper extrusion mechanism and the lower extrusion mechanism are symmetrically distributed on the upper surface and the lower surface of the transmission mechanism, and the size and the position of the upper extrusion plate and the lower extrusion plate in the vertical direction are overlapped.
The utility model has the advantages of it is following:
1. the hollow plate extrusion molding machine for municipal building construction is characterized in that a stirring mechanism is fixedly arranged on the upper surface of one side of a fixed base, the stirring mechanism comprises a rotating motor fixedly arranged on a support on the upper surface of the fixed base, a stirring barrel fixedly arranged with the rotating motor, a stirring rotating shaft movably connected with the inner part of the stirring barrel and a stirring motor fixedly connected with the other side of the stirring rotating shaft, the stirring barrel is driven to rotate in a reciprocating small angle by controlling the rotating motor on the fixed base, so that materials in the stirring barrel are stirred by a first layer, the stirring rotating shaft is driven to rotate in the stirring barrel by controlling the stirring motor on the other side of the stirring barrel, the materials in the stirring barrel are stirred by a second layer by the rotation of the stirring rotating shaft while the stirring barrel is rotated, the whole stirring effect is more uniform, and meanwhile, the electromagnetic valve is arranged at the bottom of the stirring barrel, when extrusion tooling reaches the bottom of agitator, control solenoid valve opens, make the inside of extrusion tooling enter into of the inside good material of stirring of agitator, when the follow-up extrusion of convenient device, the shaping effect of product has been guaranteed, the current municipal administration room is built and is used hollow core plate extrusion molding machine has been solved, the concrete that stirs well before adopting mostly in the course of the work carries out extrusion, the product shaping effect of making is not good, the current agitating unit stirring effect of while is not fine problem.
2. The hollow plate extrusion molding machine for municipal house construction comprises an extrusion die fixedly mounted on the upper surface of a conveying mechanism, an upper extrusion mechanism fixedly mounted on the top of the conveying mechanism, a lower extrusion mechanism fixedly mounted on the bottom of the conveying mechanism, a movable pressing plate movably mounted on the bottom of the extrusion die, a sliding chute convenient for the movable pressing plate to move up and down, and a telescopic spring fixedly mounted in the sliding chute, wherein when materials are normally filled in the extrusion die, the materials are located on the movable pressing plate, the materials in the extrusion die are prevented from leaking under the action of the telescopic spring, the upper extrusion mechanism is controlled to drive the upper extrusion plate to move downwards, the lower extrusion mechanism is controlled to drive the lower extrusion plate to move upwards, when the upper extrusion mechanism is located in the extrusion die, downward pressure is applied to the materials in the extrusion die, and the movable pressing plate has a downward moving trend, at this moment, the extrusion mechanism drives down the bottom that the stripper plate removed movable pressing plate, thereby offset that extrusion mechanism gives movable pressing plate decurrent pressure, simultaneously through last extrusion mechanism and lower extrusion mechanism's cooperation, extrude from two directions simultaneously, device extrusion's effect has been increased, the quality of commodity has further been promoted, current municipal building has been solved and has been used hollow core plate extrusion molding machine, when carrying out extrusion's during operation, the extruded not enough of current mechanism, make the quality of the hollow core plate of making out not very ideal problem.
Drawings
Fig. 1 is a schematic view of a first view structure of the present invention;
fig. 2 is a schematic view of a second perspective structure of the present invention;
fig. 3 is a schematic view of a third view structure of the present invention;
fig. 4 is a schematic structural view of the stirring mechanism of the present invention;
fig. 5 is a schematic view of a first viewing angle structure of the extrusion die of the present invention;
fig. 6 is a second view structural diagram of the extrusion die of the present invention;
fig. 7 is a schematic structural diagram of the structure a in fig. 6 according to the present invention.
In the figure: 1-fixed base, 2-transmission mechanism, 3-extrusion die, 4-upper extrusion mechanism, 5-lower extrusion mechanism, 6-stirring mechanism, 7-fixed support, 8-movable pressing plate, 9-chute, 10-expansion spring, 11-stirring barrel and 12-stirring rotation.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-7, in the present embodiment, an extrusion molding machine for a hollow slab for municipal building construction includes a fixed base 1, a transmission mechanism 2 fixed and movably installed relative to the inside of the fixed base 1, an extrusion mold 3 fixed and installed relative to the upper surface of the transmission mechanism 2, an upper extrusion mechanism 4 fixed and installed relative to the top of the transmission mechanism 2, and a lower extrusion mechanism 5 fixed and installed relative to the bottom of the transmission mechanism 2, wherein a stirring mechanism 6 is fixed and installed on the upper surface of one side of the fixed base 1. Control is located the rotation motor on unable adjustment base 1 and drives agitator 11 and carry out the rotation of reciprocal small angle, make the inside material of agitator 11 carry out the stirring of first layer, the agitator motor of 11 opposite sides of simultaneous control agitator drives stirring pivot 12 and rotates in agitator 11's inside, make in agitator 11 pivoted, the rotation through stirring pivot 12 carries out the stirring on second floor to the inside material of agitator 11, make whole stirring effect more even, simultaneously through the solenoid valve that is located agitator 11 bottom, when extrusion die 3 reaches agitator 11's bottom, the control solenoid valve is opened, make the inside material that stirs of agitator 11 get into extrusion die 3's inside, when the follow-up extrusion of convenient device, the shaping effect of product has been guaranteed. When the extrusion die 3 is normally filled with materials, the materials are positioned on the movable pressing plate 8, and the materials in the extrusion die 3 are ensured not to leak under the action of the expansion spring 10, at the same time, the upper extrusion mechanism 4 is controlled to drive the upper extrusion plate to move downwards, the lower extrusion mechanism 5 is controlled to drive the lower extrusion plate to move upwards, when the upper extrusion mechanism 4 is located inside the extrusion die 3, a downward pressure is given to the material inside the extrusion die 3, meanwhile, the movable pressing plate 8 has a downward moving trend, at the moment, the lower extrusion mechanism 5 drives the lower extrusion plate to move to the bottom of the movable pressing plate 8, thereby offsetting the downward pressure of the upper extrusion mechanism 4 on the movable pressure plate 8, and simultaneously through the cooperation of the upper extrusion mechanism 4 and the lower extrusion mechanism 5, meanwhile, the extrusion is carried out from two directions, the extrusion forming effect of the device is increased, and the quality of commodities is further improved.
Specifically, the extrusion die 3 comprises a die structure convenient for molding a hollow plate, a movable pressing plate 8 movably arranged at the bottom of the extrusion die 3, a sliding chute 9 convenient for the movable pressing plate 8 to move up and down, and a telescopic spring 10 fixedly arranged in the sliding chute 9;
the telescopic spring 10 is positioned inside the sliding chute 9, and the other side of the telescopic spring 10 is fixedly connected with the movable pressing plate 8;
the movable pressing plate 8 is movably connected inside the sliding groove 9, the extension spring 10 only has one state, namely, the compression state influenced by the movable pressing plate 8, and meanwhile, the extension spring 10 always gives upward force to the movable pressing plate 8 in one direction.
The stirring mechanism 6 comprises a rotating motor fixedly arranged on a support on the upper surface of the fixed base 1, a stirring barrel 11 fixedly arranged with the rotating motor, a stirring rotating shaft 12 movably connected with the inside of the stirring barrel 11 and a stirring motor fixedly connected with the other side of the stirring rotating shaft 12;
a rotating motor on one side of the stirring barrel 11 can drive the stirring barrel to rotate in a left-right reciprocating mode, meanwhile, the rotating angle is smaller than 45 degrees, a discharging opening convenient for materials to enter is formed in the upper surface of the stirring barrel 11, and a solenoid valve convenient for discharging the stirred materials is fixedly installed at the bottom of the stirring barrel 11;
the stirring motor on the other side of the stirring rotating shaft 12 can drive the stirring rotating shaft 12 to perform 360-degree rotation stirring.
In conclusion, when the extrusion molding machine for the hollow slab for municipal building is used, the stirring mechanism 6 is fixedly installed on the upper surface of one side of the fixed base 1, the stirring mechanism 6 comprises a rotating motor fixedly installed on a support on the upper surface of the fixed base 1, a stirring barrel 11 fixedly installed with the rotating motor, a stirring rotating shaft 12 movably connected with the inside of the stirring barrel 11 and a stirring motor fixedly connected with the other side of the stirring rotating shaft 12, the stirring barrel 11 is driven to rotate in a reciprocating small angle by controlling the rotating motor on the fixed base 1, so that the material in the stirring barrel 11 is stirred by a first layer, meanwhile, the stirring motor on the other side of the stirring barrel 11 is controlled to drive the stirring rotating shaft 12 to rotate in the stirring barrel 11, so that the material in the stirring barrel 11 is stirred by a second layer through the rotation of the stirring rotating shaft 12 while the stirring barrel 11 rotates, the whole stirring effect is more uniform, meanwhile, through the electromagnetic valve positioned at the bottom of the stirring barrel 11, when the extrusion die 3 reaches the bottom of the stirring barrel 11, the electromagnetic valve is controlled to be opened, so that the stirred material in the stirring barrel 11 enters the extrusion die 3, the subsequent extrusion forming of the device is facilitated, meanwhile, the forming effect of a product is ensured, and the problems that the existing hollow plate extrusion forming machine for municipal building is adopted mostly, the previously stirred concrete is adopted for extrusion forming in the working process, the formed product is poor in forming effect, and meanwhile, the stirring effect of the existing stirring device is not good are solved; an extrusion die 3 fixedly installed on the upper surface of a conveying mechanism 2, an upper extrusion mechanism 4 fixedly installed on the top of the conveying mechanism 2, a lower extrusion mechanism 5 fixedly installed at the bottom of the conveying mechanism 2, a movable pressing plate 8 movably installed at the bottom of the extrusion die 3, a chute 9 convenient for the movable pressing plate 8 to move up and down, and a telescopic spring 10 fixedly installed in the chute 9, wherein when the extrusion die 3 is normally filled with materials, the materials are located on the movable pressing plate 8, and the materials in the extrusion die 3 are prevented from leaking under the action of the telescopic spring 10, and meanwhile, the upper extrusion mechanism 4 is controlled to drive the upper extrusion plate to move downwards, the lower extrusion plate is driven to move upwards by controlling the lower extrusion mechanism 5, when the upper extrusion mechanism 4 is located in the extrusion die 3, a downward pressure is given to the materials in the extrusion die 3, and meanwhile, the movable pressing plate 8 has a downward moving tendency, extrusion mechanism 5 drives down the bottom that the stripper plate removed movable pressing plate 8 at this moment, thereby offset extrusion mechanism 4 and give movable pressing plate 8 decurrent pressure, simultaneously through last extrusion mechanism 4 and lower extrusion mechanism 5's cooperation, extrude from two directions simultaneously, the effect of device extrusion has been increased, the quality of commodity has further been promoted, current municipal house is built and is used hollow slab extrusion molding machine has been solved, when carrying out extrusion molding's during operation, the extruded not enough of current mechanism, make the quality of the hollow slab of making out not very ideal problem.
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 (8)
1. The utility model provides a municipal administration room is built with hollow core slab extrusion molding machine which characterized in that: including unable adjustment base (1), for unable adjustment base (1) inside fixed movable mounting's transmission device (2), for fixed surface's extrusion die (3) on transmission device (2), for transmission device (2) top fixed mounting go up extrusion mechanism (4) and for transmission device (2) bottom fixed mounting's lower extrusion mechanism (5), the last fixed surface of unable adjustment base (1) one side installs rabbling mechanism (6).
2. The extrusion molding machine for the hollow slab for the municipal house building according to claim 1, wherein: a rotating motor which is convenient for the transmission mechanism (2) to move is fixedly arranged in the fixed base (1), and the rotating motor in the fixed base (1) is movably connected with the inner surface of the transmission mechanism (2);
the last fixed surface of unable adjustment base (1) installs and is convenient for rabbling mechanism (6) fixed mounting's support, the bottom fixed mounting of rabbling mechanism (6) opposite side have encircle in transport mechanism (2) outside fixed bolster (7).
3. The extrusion molding machine for the municipal building hollow slab according to claim 1 or 2, characterized in that: the transmission mechanism (2) is two sets of transmission band symmetric distribution in the inside both sides of unable adjustment base (1), the inside rotation motor of unable adjustment base (1) is a dual output rotation motor, two sets of transmission mechanism (2) swing joint respectively with rotate on the output shaft at motor both ends.
4. The extrusion molding machine for the hollow slab for the municipal house building according to claim 1, wherein: extrusion die (3) fixed mounting in the upper surface of transmission device (2), extrusion die (3) including be convenient for hollow plate fashioned mould structure, movable mounting in the activity clamp plate (8) of extrusion die (3) bottom, be convenient for spout (9) and fixed mounting that activity clamp plate (8) reciprocated in inside expanding spring (10) of spout (9).
5. The extrusion molding machine for the hollow slab for the municipal house building according to claim 1, wherein: the upper extrusion mechanism (4) comprises an inverted L-shaped fixed support fixedly arranged on the ground on one side of the transmission mechanism (2), a telescopic cylinder fixedly arranged relative to the lower surface of the top of the fixed support and an upper extrusion plate fixedly arranged relative to the lower surface of the telescopic cylinder;
the lower extrusion mechanism (5) comprises a telescopic cylinder fixedly mounted on the ground at the bottom of the transmission mechanism (2) and a lower extrusion plate fixedly mounted on the upper surface of the telescopic cylinder.
6. The extrusion molding machine for the hollow slab for the municipal house building according to claim 2, wherein: the stirring mechanism (6) comprises a rotating motor fixedly arranged on a support on the upper surface of the fixed base (1), a stirring barrel (11) fixedly arranged with the rotating motor, a stirring rotating shaft (12) movably connected with the inside of the stirring barrel (11) and a stirring motor fixedly connected with the other side of the stirring rotating shaft (12);
the rotation motor of agitator (11) one side can drive reciprocating rotation about the agitator carries out, and turned angle is less than 45 degrees simultaneously, the agitator motor of stirring pivot (12) opposite side can drive stirring pivot (12) carries out 360 degrees rotatory stirring, the feed opening that the material of being convenient for got into is seted up to the upper surface of agitator (11), the bottom fixed mounting of agitator (11) has the solenoid valve that is convenient for carry out the unloading to the material after the stirring finishes.
7. The extrusion molding machine for the hollow slab for the municipal house building according to claim 4, wherein: the telescopic spring (10) is positioned inside the sliding groove (9), and the other side of the telescopic spring (10) is fixedly connected with the movable pressing plate (8);
the movable pressing plate (8) is movably connected inside the sliding groove (9), the telescopic spring (10) only has one state, namely the compression state influenced by the movable pressing plate (8), and meanwhile, the telescopic spring (10) always gives upward force to the movable pressing plate (8) in one direction.
8. The extrusion molding machine for the hollow slab for the municipal house building according to claim 5, wherein: the upper extrusion mechanism (4) and the lower extrusion mechanism (5) are symmetrically distributed on the upper surface and the lower surface of the transmission mechanism (2), and the sizes and the positions of the upper extrusion plate and the lower extrusion plate in the vertical direction are overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120746181.8U CN215241678U (en) | 2021-04-13 | 2021-04-13 | Municipal administration room is built with hollow plate extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120746181.8U CN215241678U (en) | 2021-04-13 | 2021-04-13 | Municipal administration room is built with hollow plate extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215241678U true CN215241678U (en) | 2021-12-21 |
Family
ID=79508388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120746181.8U Expired - Fee Related CN215241678U (en) | 2021-04-13 | 2021-04-13 | Municipal administration room is built with hollow plate extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215241678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701045A (en) * | 2022-04-21 | 2022-07-05 | 成都容正工程技术有限公司 | Municipal administration room is built with hollow plate extrusion machine |
-
2021
- 2021-04-13 CN CN202120746181.8U patent/CN215241678U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701045A (en) * | 2022-04-21 | 2022-07-05 | 成都容正工程技术有限公司 | Municipal administration room is built with hollow plate extrusion machine |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |