CN212397150U - Evaporate and press aerated concrete slab to pull out borer waxing device - Google Patents
Evaporate and press aerated concrete slab to pull out borer waxing device Download PDFInfo
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- CN212397150U CN212397150U CN202020631005.5U CN202020631005U CN212397150U CN 212397150 U CN212397150 U CN 212397150U CN 202020631005 U CN202020631005 U CN 202020631005U CN 212397150 U CN212397150 U CN 212397150U
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- 238000004018 waxing Methods 0.000 title claims abstract description 36
- 238000007598 dipping method Methods 0.000 claims abstract description 80
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000001993 wax Substances 0.000 claims description 91
- 239000012188 paraffin wax Substances 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses an evaporate and press aerated concrete slab to pull out borer waxing device, include: the device comprises a plug-pull drill rod crane, a drill rod pulling driving control unit, a wax dipping box, a support frame, a driving mechanism and a wax box driving control unit, wherein the wax dipping box is movably arranged on the support frame; the driving mechanism can drive the wax dipping box to move on the supporting frame; the wax box driving control unit is electrically connected with the drill rod pulling driving control unit, and the drill rod pulling driving control unit controls the drill rod pulling crane to pull out a steel drill rod on a concrete slab at a preset position; when the device is in a working state, the wax box driving control unit receives a preset position signal of the drill pulling driving control unit about to pull the drill, so that the driving mechanism is controlled to move the wax dipping box to a corresponding position, and the wax dipping treatment of the drill is facilitated. Compare with traditional manual regulation mode, this device can realize the automatically regulated of wax dipping case, has greatly reduced the cost of labor.
Description
Technical Field
The utility model relates to an evaporate and press aerated concrete slab to pull out borer waxing device belongs to borer waxing technical field.
Background
The autoclaved aerated concrete plate is a porous concrete product prepared by taking fly ash, lime, cement, gypsum, slag and the like as main raw materials, adding a proper amount of a gas former, a regulator and a bubble stabilizer, and carrying out the processes of batching, stirring, pouring, standing, cutting, high-pressure steam curing and the like. In the preparation process of the autoclaved aerated concrete plate, a steel bar mesh cage needs to be supported by a steel bar and inserted into a casting mold, the steel bar mesh cage is pulled out after being solidified inside a blank by slurry in the casting mold, and the steel bar is cleaned and waxed after being used once.
The traditional waxing method adopts a wax dipping pool, paraffin is filled in the pool, the paraffin is melted after being heated, and then a steel chisel is inserted into a paraffin solution to realize the waxing function. The existing wax dipping tank has the problems of more contained paraffin solution and resource waste, and particularly, when wax is dipped, the paraffin solution needs to be replaced at intervals, which causes resource waste, because the residue soil on the surface of a steel chisel usually falls into the wax dipping tank to influence the waxing effect.
For this reason, the applicant has also improved the wax dipping pool into a flat wax dipping box with adjustable position, and the wax dipping box is adjusted to a proper position according to the need when in use, however, the method needs to frequently and manually adjust the position of the wax dipping box, and particularly in automatic production, various types and specifications of autoclaved aerated concrete plates are continuously produced, and if the adjustment is not carried out in time, the problem that the wax coating cannot be carried out can be caused.
SUMMERY OF THE UTILITY MODEL
Based on the foregoing, the utility model provides an evaporate and press aerated concrete slab to pull out borer wax dipping device can be according to the position of the automatic adjustment wax dipping box of the borer of pulling out of plug borer loop wheel machine to overcome the not enough of prior art existence.
The technical scheme of the utility model is that: the utility model provides an evaporate and press aerated concrete slab to pull out borer waxing device, includes: plug borer loop wheel machine, pull out borer drive control unit and wax dipping case, wherein pull out borer drive control unit control plug borer loop wheel machine pulls out the borer on concrete slab in preset position department, still includes:
the supporting frames are arranged at two ends of the wax dipping box, and the wax dipping box is movably arranged on the supporting frames;
the driving mechanism is arranged on the supporting frame and can drive the wax dipping box to move on the supporting frame;
the wax box driving control unit is electrically connected with the drill pulling driving control unit;
when the device is in a working state, the wax box driving control unit receives a preset position signal of the drill rod pulling driving control unit about to pull the drill rod, so that the driving mechanism is controlled to move the wax dipping box to a corresponding position, and the wax dipping treatment of the drill rod is facilitated.
In one example, two ends of the wax dipping box are respectively provided with a roller, the supporting frame is provided with a guide rail, and the rollers can move along the guide rail, so that the position of the wax dipping box on the supporting frame can be adjusted.
In one example, the driving mechanism is an air cylinder, a base of the air cylinder is installed on the support frame, a free end of a telescopic rod of the air cylinder is connected with the wax dipping box, and the telescopic action of the telescopic rod of the air cylinder drives the wax dipping box to move on the guide rail.
In one example, two rollers are respectively arranged at two ends of the upper part of the wax dipping box.
In one example, the apparatus further comprises a heating unit, wherein the heating unit comprises:
the oil liquid cavity is arranged in the wax dipping box, and oil liquid is contained in the oil liquid cavity;
and the electric heater is used for heating the oil in the oil cavity.
In one example, the heating unit further includes:
the sensor is arranged in the oil cavity and used for sensing the temperature of the oil;
the controller is electrically connected with the sensor and the electric heater, the sensor transmits the detected temperature value to the controller, and the electric heater acts according to the command of the controller.
In one example, the electric heater is an oil heater that extends into the oil chamber.
In one example, the electric heater is installed at one end of the oil liquid cavity, a liquid inlet and outlet is arranged at the other end of the oil liquid cavity, and a valve is installed on the liquid inlet and outlet.
In one example, the wax dipping tank contains paraffin wax in the upper part and water in the lower part.
The utility model has the advantages that: because wax case drive control unit links with pulling out borer drive control unit to can move to corresponding position department according to pulling out borer positional information drive wax immersion case, compare with traditional manual regulation mode, the automatically regulated of wax immersion case can be realized to this device, has greatly reduced the cost of labor. In addition, this device compares with traditional waxing pond, and the paraffin solution of splendid attire is less in this device in the waxing case, and the required heat of heating waxing case is less moreover, reduction in production cost that can be very big relatively.
Drawings
Fig. 1 is a front view of a device for pulling and waxing an autoclaved aerated concrete slab according to an embodiment of the present invention;
FIG. 2 is a top view of a device for pulling out and waxing an autoclaved aerated concrete slab according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the wax dipping tank and the heating unit;
FIG. 4 is a control structure diagram of a wax box driving control unit according to an embodiment of the present invention;
fig. 5 is a control structure diagram of the oil temperature in the embodiment of the present invention;
description of reference numerals:
100 wax dipping boxes, 110 paraffin, 120 water, 130 liquid inlet and outlet ports, 140 valves and 150 rollers;
200 heating units, 210 oil liquid chambers, 220 electric heaters, 230 sensors and 240 controllers;
300 support frames, 310 guide rails;
400 a drive mechanism;
500 wax box driving control unit;
600 a control unit for driving the drill rod.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, an embodiment of the present invention provides an autoclaved aerated concrete slab drill rod pulling and waxing device, including a drill rod pulling and hoisting machine, a drill rod pulling drive control unit 600, a support frame 300, a waxing box 100, a driving mechanism 400, and a waxing box drive control unit 500.
The plug drill rod crane and the drill rod pulling drive control unit 600 are devices commonly used in automatic production of autoclaved aerated concrete slabs, and can realize the automatic plug function of steel rods, for example, the plug drill rod crane is the one with the publication number of CN109368507A and named as 'an aerated concrete plug drill rod crane and a mobile drill rod rotating device thereof'. The drill rod pulling driving control unit 600 is mainly used for controlling the operation of the drill rod pulling crane, and specifically, the drill rod pulling driving control unit 600 controls the drill rod pulling crane to pull out the steel rods on the concrete slab at a predetermined position. In the actual production of autoclaved aerated concrete slabs, each concrete block to be subjected to drill rod pulling is provided with a plurality of rows of drill rods, in order to pull out the drill rods, the drill rod pulling sequence and position information of the plug drill rod crane can be preset, and then the drill rod pulling drive control unit 600 controls the plug drill rod crane to sequentially pull out the drill rods on the concrete slabs at preset positions.
The supporting frame 300 plays a supporting role, and is mainly used for supporting the parts such as the wax dipping box 100, the heating unit 200, the stop mechanism and the like. Two strip-shaped guide rails 310 are arranged on the support frame 300.
The wax dipping box 100 is arranged after the autoclaved aerated concrete drill pulling procedure and is mainly used for carrying out wax dipping treatment on the drill steel after the drill steel is pulled. Specifically, the wax dipping tank 100 has a flat box structure with an open upper end, and the wax dipping tank 100 contains the paraffin 110 solution. When the device is in a working state, the steel chisel after being pulled out is downwards inserted into the paraffin 110 solution from the upper part, and is pulled out upwards after the paraffin is soaked.
The wax dipping box 100 is movably arranged on the support frame 300. Specifically, the rollers 150 are respectively arranged at two ends of the upper portion of the wax dipping box 100, the rollers 150 at two sides can be movably arranged on the guide rail 310, the wax dipping box 100 can be suspended on the support frame 300 through the matching of the rollers 150 and the guide rail 310, and the adjustment of the position of the wax dipping box 100 on the support frame 300 can be realized through the movement of the driving rollers 150. In one example, two rollers 150 are respectively arranged at two ends of the upper part of the wax dipping box 100, and the four rollers 150 at two sides can make the support more stable, so as to improve the moving stability of the wax dipping box 100 and avoid the solution in the wax dipping box 100 from splashing due to shaking.
The driving mechanism 400 is disposed on the supporting frame 300. Specifically, the driving mechanism 400 is a cylinder, a base of the cylinder is mounted on the support frame 300, a free end of a telescopic rod of the cylinder is connected with a side wall surface of the wax dipping box 100, and the telescopic rod of the cylinder drives the wax dipping box 100 to move on the guide rail 310. Of course, in other embodiments, the driving source may also be an electric or various forms of cylinders or push-type power devices.
The wax box driving control unit 500, the wax box driving control unit 500 and the drill rod pulling driving control unit 600 are electrically connected, and in the working state, the wax box driving control unit 500 receives a preset position signal that the drill rod pulling driving control unit 600 is to pull the drill rod, so that the driving mechanism 400 is controlled to move the wax dipping box 100 to the corresponding position, and the wax dipping treatment of the drill rod is facilitated. After the drill rod is pulled out, the drill rod pulling crane controls the drill rod to horizontally move 120 above the wax dipping box 100, and the position corresponding to the drill rod is the position to which the wax dipping box 100 needs to move.
Because wax case drive control unit 500 links with pulling out borer drive control unit 600 to can move to corresponding position department according to pulling out borer positional information drive wax infusion case 100, compare with traditional manual regulation mode, this device can realize the automatically regulated of wax infusion case 100, has greatly reduced the cost of labor. In addition, compared with the traditional wax dipping tank, the wax dipping tank 100 of the device contains less paraffin 110 solution, and the heating quantity of the wax dipping tank 100 is less, so that the production cost can be greatly reduced relatively.
In addition, paraffin 110 is conventionally contained entirely within the wax dipping tank 100. In the waxing, the drill steel is inserted into the paraffin 110 solution, and the surface thereof is thus coated with the paraffin 110. Because all of the paraffin 110 solution is in the paraffin dipping box 100, the lower part of the drill steel is long in paraffin dipping time, and in addition, when the drill steel is upwards pulled out, the paraffin 110 solution can downwards slide, so that the paraffin 110 layer coated on the surface of the drill steel is uneven, the characteristics of thin upper part and thick lower part are presented, and the drill steel inserting effect can be influenced. For this, water 120 may be contained in a lower portion of the wax dipping tank 100, and paraffin 110 may be contained in an upper portion, and since the paraffin 110 has a lower density than the water 120, the paraffin 110 solution may float on the water 120. Through the means, the drill rod contacts with paraffin 110 solution earlier when submerging downwards, enters into water 120 afterwards and is washd, and the drill rod is through paraffin 110 solution waxing in water 120 gradually when upwards extracting, not only can play the effect of wasing the drill rod, and the drill rod is twice waxing (wherein washed after waxing for the first time) moreover, not only makes paraffin 110 on the drill rod more even, and is more firm, can effectual improvement drill rod insert and pull out the borer effect.
In one example, the height of the layer of paraffin 110 solution in the wax dipping tank 100 is 30-50cm, and the applicant tests that this thickness of the layer of paraffin 110 solution allows for a balance between waxing effect and cost. It should be noted that the total height of the solution layer of paraffin 110 and water 120 should correspond to the length of the drill steel to be waxed.
The wax dipping tank 100 is provided with a heating unit 200 for heating the water 120 and the paraffin 110 in the wax dipping tank 100. Including an oil chamber 210, an electric heater 220, a sensor 230, and a controller 240.
And the oil liquid cavity 210 is arranged in the wax dipping tank 100. Specifically, the oil chamber 210 is disposed at the bottom of the wax dipping tank 100. For example, the oil chamber 210 may be integrally formed with the wax dipping tank 100. One end of the oil chamber 210 is provided with a mounting port for hermetically mounting the electric heater 220, and the other end is provided with a liquid inlet and outlet 130 for mounting the valve 140, so that the oil can be introduced into the oil chamber 210 through the liquid inlet and outlet 130, and the oil therein can be replaced. In the working state, the oil transfers heat to the water 120 and the paraffin 110 in the wax-dipping tank 100 through the wall of the oil chamber 210, so that the water and the paraffin are heated and liquefied.
And an electric heater 220 for heating the oil in the oil chamber 210. Specifically, the electric heater 220 is an oil heater which is installed in a mounting port of the oil chamber 210 and whose heating body extends into the oil chamber 210. In other embodiments, the electric heater 220 may also take other forms of heaters, such as an electric heating tube.
And the sensor 230 is arranged in the oil cavity 210 and used for sensing the temperature of the oil. The sensor 230 may be a temperature sensor.
And a signal input end of the controller 240 is electrically connected with a signal output end of the sensor 230, and a signal output end of the controller 240 is electrically connected with a control end of the electric heater 220. In the operating state, the sensor 230 transmits the detected temperature value of the oil to the controller 240, and the controller 240 controls the electric heater 220 to start or stop heating according to a set command. For example, when the detected temperature value is lower than the set temperature value, the controller 240 controls the electric heater 220 to start heating. When the detected temperature value is higher than the set temperature value, the controller 240 controls the electric heater 220 to stop heating. So that the temperature of the oil liquid is always kept in a proper range, and the wax dipping effect can be further improved.
This device adopts the bottom at the waxing pond to set up oil liquid chamber 210, and splendid attire fluid in oil liquid chamber 210, through fluid heater heating fluid, fluid passes through oil liquid chamber 210 gradually with the heat and transmits water 120 and paraffin 110 in the waxing pond, makes paraffin 110 keep melting the state, because fluid keeps warm strong, consequently can prolong paraffin 110's solution state. Compared with the existing direct heating mode, the device has the effects of low energy consumption and long heat preservation time.
The embodiment of the utility model provides a still provide a evaporate control method who presses aerated concrete slab to pull out borer waxing device, include following step:
s1, before the drill rod is pulled out, presetting a plurality of preset position signals to be pulled out according to the positions of a plurality of rows of steel rods on the concrete slab, and controlling the insertion and pulling drill rod crane to pull out the drill rod according to the preset position signals by the drill rod driving control unit 600. Of course, the sequence of the pin pulling can be set as required.
S2, when the drill rod is pulled out, the wax box driving control unit 500 receives the preset position signal and drives the wax dipping box 100 to the position corresponding to the current preset position signal through the driving mechanism 400 so as to facilitate the wax dipping of the drill rod.
S3, after the drill rod is pulled out, the drill rod pulling driving control unit 600 controls the inserting and pulling drill rod crane to drive the drill rod to move to the position above the wax dipping box 100, then controls the inserting and pulling drill rod crane to move downwards to enable the drill rod to be inserted into the wax dipping box 100 to complete wax dipping treatment, then pulls out the drill rod, sends the drill rod to a set position (the stacking position of the drill rod can be used, or the drill rod can be reinserted into a steel reinforcement cage), and then returns to pull out the drill rod again.
And S4, repeating the steps S1 to S3 until the rows of steel studs on the concrete plate are completely pulled out and wax is soaked.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides an evaporate and press aerated concrete slab to pull out borer waxing device, includes: plug borer loop wheel machine, pull out borer drive control unit (600) and wax dipping case (100), wherein pull out borer drive control unit (600) control plug borer loop wheel machine pulls out the drill rod on concrete slab in preset position department, its characterized in that still includes:
the supporting frames (300) are arranged at two ends of the wax dipping box (100), and the wax dipping box (100) is movably arranged on the supporting frames (300);
the driving mechanism (400) is arranged on the supporting frame (300), and the driving mechanism (400) can drive the wax dipping box (100) to move on the supporting frame (300);
the wax box driving control unit (500), the wax box driving control unit (500) is electrically connected with the drill pulling driving control unit (600);
in the working state, the wax box driving control unit (500) receives a preset position signal of the drill pulling driving control unit (600) about to perform drill pulling, so that the driving mechanism (400) is controlled to move the wax dipping box (100) to a corresponding position, and the wax dipping treatment of the drill steel is facilitated.
2. The device for pulling and waxing an autoclaved aerated concrete slab according to claim 1, wherein rollers (150) are respectively arranged at two ends of the waxing box (100), a guide rail (310) is arranged on the supporting frame (300) in a matching manner, and the rollers (150) can move along the guide rail (310) so as to adjust the position of the waxing box (100) on the supporting frame (300).
3. The device for pulling and waxing the autoclaved aerated concrete slab according to claim 2, wherein the driving mechanism (400) is a cylinder, a base of the cylinder is installed on the support frame (300), a free end of a telescopic rod of the cylinder is connected with the wax dipping box (100), and the telescopic action of the telescopic rod of the cylinder drives the wax dipping box (100) to move on the guide rail (310).
4. The device for pulling and waxing autoclaved aerated concrete slabs according to claim 2, wherein two rollers (150) are respectively arranged at two ends of the upper part of the wax dipping tank (100).
5. The autoclaved aerated concrete panel concrete slab pulling and waxing device according to claim 1, further comprising a heating unit (200), wherein the heating unit (200) comprises:
the oil liquid cavity (210) is arranged in the wax dipping box (100), and oil liquid is contained in the oil liquid cavity (210);
and the electric heater (220) is used for heating the oil liquid in the oil liquid cavity (210).
6. The autoclaved aerated concrete panel concrete pulling and waxing device according to claim 5, wherein said heating unit (200) further comprises:
the sensor (230) is arranged in the oil liquid cavity (210) and is used for sensing the temperature of the oil liquid;
a controller (240), the controller (240) being electrically connected with the sensor (230) and the electric heater (220), the sensor (230) transmitting a detected temperature value to the controller (240), the electric heater (220) acting according to a command of the controller (240).
7. The autoclaved aerated concrete panel drill rod waxing device according to claim 5, wherein said electric heater (220) is an oil heater, said oil heater extending into said oil chamber (210).
8. The device for pulling and waxing the autoclaved aerated concrete slab according to claim 5, wherein the electric heater (220) is installed at one end of the oil liquid cavity (210), the other end of the oil liquid cavity (210) is provided with a liquid inlet and outlet (130), and a valve (140) is installed on the liquid inlet and outlet (130).
9. The device for pulling and waxing autoclaved aerated concrete slabs according to claim 1, wherein the paraffin wax (110) is contained in the upper part of the wax dipping tank (100), and water (120) is contained in the lower part of the wax dipping tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020631005.5U CN212397150U (en) | 2020-04-24 | 2020-04-24 | Evaporate and press aerated concrete slab to pull out borer waxing device |
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|---|---|---|---|
| CN202020631005.5U CN212397150U (en) | 2020-04-24 | 2020-04-24 | Evaporate and press aerated concrete slab to pull out borer waxing device |
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| CN212397150U true CN212397150U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731721A (en) * | 2021-10-11 | 2021-12-03 | 富乐压铸(太仓)有限公司 | Processing equipment for nano coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731721A (en) * | 2021-10-11 | 2021-12-03 | 富乐压铸(太仓)有限公司 | Processing equipment for nano coating |
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Effective date of registration: 20240204 Address after: Room 4221, Office Building 4, Huchao Township Management Committee, Gui'an New District, Guiyang City, Guizhou Province, 550003 Patentee after: GUIZHOU GUIREN ECOLOGICAL SAND TECHNOLOGY CO.,LTD. Country or region after: China Address before: 550700 5th floor, administration office building, Changshun light industrial park, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province Patentee before: Guizhou Changtong prefabricated building materials Co.,Ltd. Country or region before: China |
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