CN110202669A - A kind of chalk molding equipment - Google Patents
A kind of chalk molding equipment Download PDFInfo
- Publication number
- CN110202669A CN110202669A CN201910551732.2A CN201910551732A CN110202669A CN 110202669 A CN110202669 A CN 110202669A CN 201910551732 A CN201910551732 A CN 201910551732A CN 110202669 A CN110202669 A CN 110202669A
- Authority
- CN
- China
- Prior art keywords
- hole
- suction
- molding
- pusher
- chalk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/021—Feeding the unshaped material to moulds or apparatus for producing shaped articles by fluid pressure acting directly on the material, e.g. using vacuum, air pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of chalk molding equipments, it is related to chalk molding equipment technical field, the present invention is using by the way of the suction of lower part, the slurry in each molding hole can be made to fill more plentiful, guarantee the molding substantial performance of chalk, the problem of the defects of preventing chalk internal void or crack, guarantee the performance of chalk, simultaneously, automatically suction and downward pusher may be implemented in the present invention, it is simple and convenient, before each suction, slurry is pushed downwards first with pusher, it is assisted in a manner of suction again, it is filled in molding hole so that slurry is solid, pusher is released later, the forming processes of automation and mass may be implemented.
Description
Technical field
The present invention relates to chalk molding equipment technical field, specifically a kind of chalk molding equipment.
Background technique
The slurries that chalk adds water and stirs mixing using anhydrous gypsum inject in rodlike mould, out after the screen to filtrate several times
It is dried in air or under low temperature (≤50 DEG C) after mould, chalk first needs to carry out forming operation using mold before baking,
And the general mode individually squeezed, preparation efficiency are lower, and use multiple while when squeezing, it is easy so that chalk after molding
There is the problems such as cavity in inside, not can guarantee inside chalk that filling is fuller, causes chalk air entrapment larger, influences the property of chalk
Can, it is easy to take exercise when gently then writing, heavy then form built on the sand, the problems such as subsequent drying course will appear crack.
Therefore, the present invention provides a kind of chalk molding equipments, to solve the problems mentioned in the above background technology.
Summary of the invention
The purpose of the present invention is to provide a kind of chalk molding equipments, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of chalk molding equipment, including including molding
Storehouse, pusher and real machine structure is inhaled, profiled sheeting, being provided at arrangement in the profiled sheeting are provided in the middle part of the forming bin
The forming bin is divided into binder chamber above it and in the bottom by the molding hole of multiple rows of multiple row, the profiled sheeting
Splicing chamber, which is characterized in that mobile suction real machine can be slided relative to the profiled sheeting by being additionally provided with below the profiled sheeting
Structure is additionally provided with the pusher above the binder chamber；The real hole of suction and blanking hole are provided on the suction real machine structure, respectively
A suction reality hole and blanking hole can be arranged up and down with the molding hole same axis on the profiled sheeting, to make to form
When, the real hole of the suction and the molding hole site are opposite up and down, will pass through the movement for inhaling real hole for slurry to be formed
It tamps and sucks in the molding hole of the profiled sheeting, and after the completion of molding, the blanking hole and the molding hole site phase up and down
It is right, it is released from the blanking hole with will pass through the pusher for blank after molding, and it is intracavitary to fall into the splicing.
Further, preferably, the suction real machine structure includes inhaling solid plate, upper diaphragm, lower filter, suction pump and Linear Driving
Mechanism, wherein the real hole of the suction and blanking hole are mutually alternatively arranged and are laid on the suction solid plate, the upper end for inhaling real hole
Face is fixedly installed the upper diaphragm, and the upper diaphragm does not allow slurry to be formed to pass through, and carries out to treat shaping slurry
Retention, and the upper diaphragm is ventilating structure, the lower end surface for inhaling real hole is fixedly installed the lower filter, the lower filter
Lower part using suction pump is connected to, the suction pump can vacuumize the real hole of suctions, one end company for inhaling solid plate
It is connected to linear driving mechanism, the linear driving mechanism drives the suction solid plate movement, to make the suction for inhaling solid plate real
Hole or blanking hole are corresponding with molding hole site.
Further, preferably, the edge that the upper surface for inhaling solid plate is located at each real hole of the suction is additionally provided with
The elastic packing rubber mat of annular, and the diameter for inhaling real hole is less than the diameter of the molding hole, the diameter of the blanking hole is big
In the diameter of the molding hole.
Further, described preferably, sealing installation settings on the suction reality hole of the lower part of the lower filter has connection plug
Connection plug is connect with branch pipe, and the branch pipe and supervisor connect, and the supervisor connect with the suction pump, and the supervisor is laid in
On two column or two rows of positions inhaled between real hole.
Further, described to blow after the pusher pusher preferably, being also connected with blower pump on the supervisor
Air pump movement, realizes and blows, to prevent the blocking of the upper diaphragm.
Further, preferably, the forming bin is the body structure that bottom plate, side baffle and top plate structure are set, the top plate
On be also connected with the auxiliary stand for being provided with and extending straight down, the pusher is mounted on the centre bit of the top plate
It sets.
Further, preferably, the pusher includes pusher cylinder, scraping wings and pushing head, wherein the pusher
Cylinder is fixedly mounted on the top plate, and the piston rod of the pusher cylinder extends downwardly the top plate, the pusher cylinder
Piston end be connected to the scraping wings, the bottom of the scraping wings is fixedly installed the pushing head being arranged, the pusher
Head is corresponding with the molding hole site on the profiled sheeting.
Further, preferably, being provided with installation sliding block, the side block at left and right sides of the profiled sheeting and suction solid plate
Installation sliding slot is provided on the inner wall of plate, the installation sliding block and installation sliding slot cooperation are slided, so as to the profiled sheeting
It is replaced with solid plate is inhaled
Further, preferably, the linear driving mechanism drives the suction solid plate front-rear direction mobile.
Further, preferably, the linear driving mechanism uses cylinder, hydraulic cylinder or motor lead screw nut body.
Compared with prior art, the beneficial effects of the present invention are: the present invention can make using by the way of the suction of lower part
Slurry in each molding hole fill it is more plentiful, guarantee the molding substantial performance of chalk, prevent chalk internal void or
The problem of the defects of crack, guarantees the performance of chalk, meanwhile, automatically suction and downward pusher, letter may be implemented in the present invention
Folk prescription just, before each suction, pushes downwards slurry first with pusher, then assist in a manner of suction, so that slurry knot
Real is filled in molding hole, and pusher is released later, and the forming processes of automation and mass may be implemented.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of chalk molding equipment；
Fig. 2 is structural schematic diagram when molding hole is opposite with real hole site is inhaled in a kind of chalk molding equipment；
Fig. 3 is structural schematic diagram when molding hole is opposite with blanking hole site in a kind of chalk molding equipment；
Fig. 4 is a kind of structural schematic diagram of the suction solid plate of chalk molding equipment；
Fig. 5 be the branch pipe of chalk molding equipment a kind of, supervisor, molding hole, inhale real hole arrangement structural schematic diagram.
Specific embodiment
Please refer to Fig. 1~5, in the embodiment of the present invention, a kind of chalk molding equipment, including including forming bin 4, pusher
With suction real machine structure, the middle part of the forming bin 4 is provided with profiled sheeting 7, and the profiled sheeting 7 is interior to be provided with multiple rows of multiple row at arrangement
Molding hole 13, the forming bin 4 is divided into binder chamber and splicing in the bottom above it by the profiled sheeting 7
Chamber, which is characterized in that the lower section of the profiled sheeting 7 is additionally provided with can slide mobile suction real machine structure relative to the profiled sheeting,
The pusher is additionally provided with above the binder chamber；The real hole 17 of suction and blanking hole 18 are provided on the suction real machine structure,
Each suction reality hole 17 and blanking hole 18 can be arranged up and down with the molding hole same axis on the profiled sheeting, to make
When molding, the real hole 17 of the suction and 13 position of molding hole are opposite up and down, with will pass through the movement for inhaling reality hole will at
The slurry of type, which tamps, to be sucked in the molding hole of the profiled sheeting, and after the completion of molding, the blanking hole 17 and the molding hole
13 positions are opposite up and down, released from the blanking hole with will pass through the pusher for blank after molding, and fall into institute
It is intracavitary to state splicing.
In the present embodiment, it in order to adapt to the difference of different height, is additionally provided with above profiled sheeting interfaced
Upper profiled sheeting 5, the upper profiled sheeting 5 is opposite with the molding hole between the profiled sheeting 7, and is connected to one using molding die cylinder
It rises.It is of course also possible to profiled sheeting be done thicker, and profiled sheeting 5 and molding die cylinder are saved.
As preferred embodiment, the suction real machine structure includes inhaling solid plate 8, upper diaphragm 14, lower filter 15, suction pump and line
Property driving mechanism, wherein the real hole 17 of the suction and blanking hole 18 are mutually alternatively arranged and are laid on the suction solid plate 8, described
The upper surface for inhaling real hole 17 is fixedly installed the upper diaphragm 14, and the upper diaphragm 14 does not allow slurry to be formed to pass through, with
Just it treats shaping slurry to be retained, and the upper diaphragm 14 is ventilating structure, the lower end surface fixed setting for inhaling real hole 17
Have a lower filter 15, the lower part of the lower filter 15 using being connected to suction pump, the suction pump can to the suctions reality hole into
Row vacuumizes, and described one end for inhaling solid plate is connected to linear driving mechanism, and the linear driving mechanism drives the suction solid plate dynamic
Make, to make the suction reality hole for inhaling solid plate or blanking hole corresponding with molding hole site.
The upper surface for inhaling solid plate 8 is located at the elastic sealant that each edge for inhaling real hole is additionally provided with annular
Pad 20, and the diameter for inhaling real hole 17 is less than the diameter of the molding hole 13, the diameter of the blanking hole 18 be greater than it is described at
The diameter of type hole 13.
Installation settings is sealed on the suction reality hole of the lower part of the lower filter connection plug 16, the connection plug 16 and branch
Pipe 21 connects, and the branch pipe 21 is connect with supervisor 22, and the supervisor 22 connect with the suction pump, and the supervisor is laid in two column
Or on two rows of positions inhaled between real hole.
As more preferably one embodiment, it is also connected with blower pump on the supervisor 22, after the pusher pusher,
The blower pump movement, realizes and blows, to prevent the blocking of the upper diaphragm.
Such as Fig. 1, the forming bin is the body structure that bottom plate 6, side baffle 3 and 11 structure of top plate are set, and is gone back on the top plate 11
It is connected with the auxiliary stand 9 extended straight down, the pusher is mounted on the center of the top plate.
The pusher includes pusher cylinder 12, scraping wings 1 and pushing head 2, wherein the fixed peace of the pusher cylinder 12
On the top plate 11, and the piston rod of the pusher cylinder 12 extends downwardly the top plate 11, the pusher cylinder 12
Piston end is connected to the scraping wings 1, and the bottom of the scraping wings 1 is fixedly installed the pushing head 2 being arranged, the pusher
First 2 is corresponding with the molding hole site on the profiled sheeting.
It is provided with installation sliding block at left and right sides of the profiled sheeting and suction solid plate, is provided on the inner wall of the side baffle
Sliding slot is installed, the installation sliding block and installation sliding slot cooperation are slided, to replace to the profiled sheeting with solid plate is inhaled.
The linear driving mechanism drives the suction solid plate front-rear direction mobile.
Wherein, the linear driving mechanism uses cylinder, hydraulic cylinder or motor lead screw nut body.
Compared with prior art, the beneficial effects of the present invention are: the present invention can make using by the way of the suction of lower part
Slurry in each molding hole fill it is more plentiful, guarantee the molding substantial performance of chalk, prevent chalk internal void or
The problem of the defects of crack, guarantees the performance of chalk, meanwhile, automatically suction and downward pusher, letter may be implemented in the present invention
Folk prescription just, before each suction, pushes downwards slurry first with pusher, then assist in a manner of suction, so that slurry knot
Real is filled in molding hole, and pusher is released later, and the forming processes of automation and mass may be implemented.
It is above-described, it is merely preferred embodiments of the present invention, but protection scope of the present invention is not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention
And its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of chalk molding equipment, including including forming bin, pusher and real machine structure is inhaled, the middle part setting of the forming bin
There are profiled sheeting, the interior molding hole for being provided with multiple rows of multiple row at arrangement of the profiled sheeting, the profiled sheeting divides the forming bin
The binder chamber and splicing chamber in the bottom being segmented into above it, which is characterized in that also set up below the profiled sheeting
Mobile suction real machine structure can be slided relative to the profiled sheeting by having, and be additionally provided with the pusher above the binder chamber；
Be provided with the real hole of suction and blanking hole on the suction real machine structure, each suctions reality hole and blanking hole can on the profiled sheeting
Molding hole same axis arrange that when to make molding, suctions reality hole and the molding hole site are opposite up and down up and down, so as to
Slurry to be formed is tamped by the movement for inhaling real hole and is sucked in the molding hole of the profiled sheeting, and is completed in molding
Afterwards, the blanking hole and the molding hole site are opposite up and down, will pass through the pusher for blank after molding from institute
It states in blanking hole and releases, and it is intracavitary to fall into the splicing.
2. a kind of chalk molding equipment according to claim 1, which is characterized in that the suction real machine structure include inhale solid plate,
Upper diaphragm, lower filter, suction pump and linear driving mechanism, wherein the real hole of the suction and blanking hole are mutually alternatively arranged laying
On the suction solid plate, the upper surface for inhaling real hole is fixedly installed the upper diaphragm, and the upper diaphragm does not allow to be formed
Slurry pass through, retained to treat shaping slurry, and the upper diaphragm is ventilating structure, the lower end surface for inhaling real hole
It is fixedly installed the lower filter, the lower part of the lower filter, which uses, is connected to suction pump, and the suction pump can be real to the suction
Hole is vacuumized, and described one end for inhaling solid plate is connected to linear driving mechanism, and the linear driving mechanism drives the suction real
Plate movement, to make the suction reality hole for inhaling solid plate or blanking hole corresponding with molding hole site.
3. a kind of chalk molding equipment according to claim 1, which is characterized in that the upper surface for inhaling solid plate is located at every
A edge for inhaling real hole is additionally provided with the elastic packing rubber mat of annular, and the diameter for inhaling real hole is less than the molding
The diameter in hole, the diameter of the blanking hole are greater than the diameter of the molding hole.
4. a kind of chalk molding equipment according to claim 2, which is characterized in that the suction reality hole of the lower part of the lower filter
Upper sealing installation settings has connection plug, and the connection plug is connect with branch pipe, the branch pipe and supervisor connect, it is described supervisor with
The suction pump connection, the supervisor are laid on two column or two rows of positions inhaled between real hole.
5. a kind of chalk molding equipment according to claim 2, which is characterized in that be also connected with air blowing on the supervisor
Pump, after the pusher pusher, the blower pump movement is realized and is blown, to prevent the blocking of the upper diaphragm.
6. a kind of chalk molding equipment according to claim 2, which is characterized in that the forming bin is bottom plate, side baffle
The body structure set with top plate structure is also connected with the auxiliary stand for being provided with and extending straight down, the pusher on the top plate
Structure is mounted on the center of the top plate.
7. a kind of chalk molding equipment according to claim 2, which is characterized in that the pusher includes pusher gas
Cylinder, scraping wings and pushing head, wherein the pusher cylinder is fixedly mounted on the top plate, and the piston of the pusher cylinder
Bar extends downwardly the top plate, and the piston end of the pusher cylinder is connected to the scraping wings, and the bottom of the scraping wings is fixed
It is provided with the pushing head being arranged, the pushing head is corresponding with the molding hole site on the profiled sheeting.
8. a kind of chalk molding equipment according to claim 2, which is characterized in that the profiled sheeting and the left and right for inhaling solid plate
Two sides are provided with installation sliding block, and installation sliding slot, the installation sliding block and the installation are provided on the inner wall of the side baffle
Sliding slot cooperation sliding, to be replaced to the profiled sheeting and suction solid plate.
9. a kind of chalk molding equipment according to claim 8, which is characterized in that described in the linear driving mechanism driving
It is mobile to inhale solid plate front-rear direction.
10. a kind of chalk molding equipment according to claim 9, which is characterized in that the linear driving mechanism uses gas
Cylinder, hydraulic cylinder or motor lead screw nut body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551732.2A CN110202669B (en) | 2019-06-24 | 2019-06-24 | Chalk forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551732.2A CN110202669B (en) | 2019-06-24 | 2019-06-24 | Chalk forming equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110202669A true CN110202669A (en) | 2019-09-06 |
| CN110202669B CN110202669B (en) | 2020-06-23 |
Family
ID=67794326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910551732.2A Active CN110202669B (en) | 2019-06-24 | 2019-06-24 | Chalk forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202669B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300595A (en) * | 2020-03-19 | 2020-06-19 | 刘海信 | Automatic chalk production machine |
| CN111619267A (en) * | 2020-05-27 | 2020-09-04 | 四川兴齐畅科技有限公司 | Environment-friendly water-soluble chalk production equipment |
| CN111761966A (en) * | 2020-06-09 | 2020-10-13 | 盘秀英 | Chalk production is with automatic mould slip casting equipment |
| CN112622337A (en) * | 2020-11-05 | 2021-04-09 | 胡旭晨 | Automatic chalk make-up machine of unloading |
| CN112847737A (en) * | 2020-12-08 | 2021-05-28 | 王琳 | Watering type chalk forming device |
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| CN201201301Y (en) * | 2008-04-30 | 2009-03-04 | 桑应波 | Chalk forming die |
| CN202944059U (en) * | 2012-10-30 | 2013-05-22 | 林瑞别 | Manufacturing mold of chalk |
| JP2014065189A (en) * | 2012-09-25 | 2014-04-17 | Taiheiyo Cement Corp | Ceramics sintered compact, and production method thereof |
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| CN206561714U (en) * | 2016-11-04 | 2017-10-17 | 云和漫行者玩具有限公司 | A kind of Chalk machine for facilitating form removal |
| CN108000814A (en) * | 2017-12-27 | 2018-05-08 | 徐土斌 | A kind of efficient quick injection mold |
| CN207727583U (en) * | 2017-12-23 | 2018-08-14 | 广州华磊建筑基础工程有限公司 | A kind of pile foundation concrete conveyer |
| CN208323712U (en) * | 2017-11-22 | 2019-01-04 | 淄博翔鹏机械有限公司 | Multi-cavity intelligently measures control type extruder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201201301Y (en) * | 2008-04-30 | 2009-03-04 | 桑应波 | Chalk forming die |
| JP2014065189A (en) * | 2012-09-25 | 2014-04-17 | Taiheiyo Cement Corp | Ceramics sintered compact, and production method thereof |
| CN202944059U (en) * | 2012-10-30 | 2013-05-22 | 林瑞别 | Manufacturing mold of chalk |
| CN204772915U (en) * | 2015-07-14 | 2015-11-18 | 江苏东吴新材料科技有限公司 | Easy drawing of patterns chalk machine mould |
| CN206561714U (en) * | 2016-11-04 | 2017-10-17 | 云和漫行者玩具有限公司 | A kind of Chalk machine for facilitating form removal |
| CN208323712U (en) * | 2017-11-22 | 2019-01-04 | 淄博翔鹏机械有限公司 | Multi-cavity intelligently measures control type extruder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300595A (en) * | 2020-03-19 | 2020-06-19 | 刘海信 | Automatic chalk production machine |
| CN111300595B (en) * | 2020-03-19 | 2021-06-29 | 刘海信 | Automatic chalk production machine |
| CN111619267A (en) * | 2020-05-27 | 2020-09-04 | 四川兴齐畅科技有限公司 | Environment-friendly water-soluble chalk production equipment |
| CN111619267B (en) * | 2020-05-27 | 2021-12-03 | 四川兴齐畅科技有限公司 | Environment-friendly water-soluble chalk production equipment |
| CN111761966A (en) * | 2020-06-09 | 2020-10-13 | 盘秀英 | Chalk production is with automatic mould slip casting equipment |
| CN111761966B (en) * | 2020-06-09 | 2022-01-11 | 江苏中腾石英材料科技股份有限公司 | Chalk production is with automatic mould slip casting equipment |
| CN112622337A (en) * | 2020-11-05 | 2021-04-09 | 胡旭晨 | Automatic chalk make-up machine of unloading |
| CN112847737A (en) * | 2020-12-08 | 2021-05-28 | 王琳 | Watering type chalk forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110202669B (en) | 2020-06-23 |
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