CN113798913A - Numerical control lathe - Google Patents
Numerical control lathe Download PDFInfo
- Publication number
- CN113798913A CN113798913A CN202111136445.9A CN202111136445A CN113798913A CN 113798913 A CN113798913 A CN 113798913A CN 202111136445 A CN202111136445 A CN 202111136445A CN 113798913 A CN113798913 A CN 113798913A
- Authority
- CN
- China
- Prior art keywords
- cooling box
- cooling
- screw rod
- transmission shaft
- bidirectional screw
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 8
- 239000002826 coolant Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 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
- 238000004904 shortening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1069—Filtration systems specially adapted for cutting liquids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention relates to the technical field of numerical control machining equipment, in particular to a numerical control lathe. The ring is dialled through the motor drive, and then makes undulant ring rotate with power transmission give the both sides of a transmission shaft disalignment direction and the filter that the cooling box lateral wall passes through spout sliding connection, makes the filter move with the reciprocal relative sieve of spring cooperation, improves the filter effect to in reducing traditional cooling method, easily with cut waste material rush into the cooling tank together and lead to the phenomenon appearance of delivery port jam. Meanwhile, the motor transmits power to the bidirectional screw rod through gear transmission, so that the bidirectional screw rod rotates, the water pushing plate which is connected with the bidirectional screw rod through screw nuts and threads is driven to reciprocate on the bidirectional screw rod, the water pushing plate is made to stir water flow in the cooling box, and cooling efficiency is improved compared with static water cooling in traditional cooling.
Description
Technical Field
The invention relates to the technical field of numerical control machining equipment, in particular to a numerical control lathe.
Background
The numerically controlled lathe is one of the widely used numerically controlled lathes, and is mainly used for cutting and processing inner and outer cylindrical surfaces, inner and outer conical surfaces with any taper angle, complex rotary inner and outer curved surfaces, cylinders, conical threads and the like of shaft parts or disc parts, and can perform grooving, drilling, reaming, boring and the like.
The cooling box is as the important component part of cooling body in traditional numerical control lathe production, mostly through collecting the coolant liquid the back again cut the separation of waste material and coolant liquid, and the coolant liquid natural cooling and cyclic utilization after the separation, but this kind of traditional cooling easily with cut the waste material rush into the cooling bath together and easily lead to the outlet to block up, cut waste material separation efficiency is lower, and natural cooling's cooling efficiency is lower.
In view of this, in order to overcome the above technical problems, the present invention provides a numerically controlled lathe, which solves the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the numerical control lathe provided by the invention can reduce the entering of cutting waste into cooling liquid, reduce the probability of blockage of the conveying pipe, accelerate the flowing of the cooling liquid to increase the cooling efficiency of the cooling liquid, and improve the defect of blockage of a cooling liquid pipeline, thereby increasing the working efficiency and shortening the cooling time of the cooling liquid.
The invention provides a numerical control lathe, which comprises a cooling box, wherein a bidirectional screw rod is arranged at the bottom of the cooling box, and one end of the bidirectional screw rod is rotationally connected with the side wall of the cooling box through a bearing; the other end of the bidirectional screw penetrates through the cooling box and is fixedly connected with a first gear, and the bidirectional screw is in threaded connection with the water pushing plate through a screw nut; the water pushing plate is connected with the side wall of the cooling box in a sliding manner; a second gear is meshed above the first gear; the inner ring of the second gear is fixedly connected with a first transmission shaft, the first transmission shaft penetrates through the cooling box, the other end of the first transmission shaft is rotatably connected with the side wall of the cooling box, the part, located in the cooling box, of the first transmission shaft is fixedly connected with a stirring ring, and two ends of the fluctuation ring are provided with bulges; the two sides of the stirring ring are provided with filter plates, and the corresponding positions of the filter plates and the stirring ring are provided with bulges; one side of the filter plate and one side of the first transmission shaft in the coaxial direction are fixedly connected with the spring, and the other side of the filter plate is connected with the side wall in a sliding manner; the filter plate and two sides of the first transmission shaft in different axial directions are in sliding connection with the side wall of the cooling box through sliding chutes; the first transmission shaft penetrates through the side wall part and is fixedly connected with a motor; the motor is fixedly connected with the box body through a support.
Preferably, one end of the filter plate without the spring is provided with a sealing ring; the sealing ring is fixedly connected with the filter plate.
Preferably, the water pushing plate is made of aluminum alloy; the surface of the water pushing plate is provided with a plurality of through holes which are uniformly distributed.
Preferably, the cooling box is provided with vent holes uniformly distributed on two sides.
Preferably, one end of the bottom of the cooling box is provided with a water outlet.
Preferably, a water inlet is formed in the top of the cooling box.
The invention has the following beneficial effects:
1. according to the numerically controlled lathe provided by the invention, the stirring ring is driven by the motor, so that the fluctuation ring rotates to transmit power to the filter plate which is in sliding connection with the side wall of the cooling box through the sliding groove at two sides in the non-coaxial direction of the first transmission shaft, the filter plate and the spring are matched to perform reciprocating relative screening, the filtering effect is improved, and the phenomenon that a water outlet is blocked because cutting waste materials are easily flushed into a cooling pool together in the traditional cooling mode is reduced.
2. According to the numerical control lathe provided by the invention, the motor transmits power to the bidirectional screw rod through gear transmission, so that the bidirectional screw rod rotates, the water pushing plate connected with the bidirectional screw rod through the screw rod nut in a threaded mode is driven to reciprocate on the bidirectional screw rod, water flow is stirred in the cooling box, and the cooling efficiency is improved compared with that of static water cooling in the traditional cooling.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
in the figure: the cooling box comprises a cooling box 1, a bidirectional screw rod 2, a bearing 3, a first gear 4, a screw nut 5, a water pushing plate 6, a second gear 7, a first transmission shaft 8, a stirring ring 9, a protrusion 10, a limiting block 11, a spring 12, a motor 13, a support 14, a sealing ring 15, a filter plate 16, a water inlet 103, a water outlet 102, an air vent 101 and a through hole 501.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides a numerical control lathe which comprises a cooling box 1, wherein a bidirectional screw rod 2 is arranged at the bottom of the cooling box 1, and one end of the bidirectional screw rod 2 is rotatably connected with the side wall of the cooling box 1 through a bearing 3; the other end of the bidirectional screw rod 2 penetrates through the cooling box 1 and is fixedly connected with a first gear 4, and the bidirectional screw rod 2 is in threaded connection with a water pushing plate 6 through a screw rod nut 5; the water pushing plate 6 is connected with the side wall of the cooling box 1 in a sliding manner; a second gear 7 is meshed above the first gear 4; the inner ring of the second gear 7 is fixedly connected with a first transmission shaft 8, the first transmission shaft 8 penetrates through the cooling box 1, the other end of the first transmission shaft 8 is rotatably connected with the side wall of the cooling box 1, the part, located in the cooling box 1, of the first transmission shaft 8 is fixedly connected with a stirring ring 9, and bulges 10 are arranged on two sides of the stirring ring 9; two ends of the stirring ring 9 are provided with filter plates 16, and the corresponding positions of the filter plates 16 and the stirring ring 9 are provided with limit blocks 11; one side of the filter plate 16 and one side of the first transmission shaft 8 in the coaxial direction are fixedly connected with the spring 12, and the other side of the filter plate is connected with the side wall in a sliding manner; the two sides of the filter plate 16 and the first transmission shaft 8 in the non-coaxial direction are in sliding connection with the side wall of the cooling box 1 through sliding chutes; the first transmission shaft 8 penetrates through the side wall part and is fixedly connected with a motor 13; the motor 13 is fixedly connected with the box body through a bracket 14;
the motor 13 is electrified to drive the first transmission shaft 8 fixedly connected with the output shaft to rotate, the first transmission shaft 8 drives the stirring ring 9 to rotate, the stirring ring 9 and the filter plate 16 are both provided with a limiting block 11, when the protrusion 10 of the stirring ring 9 rotates to the position coinciding with the limiting block 11, the protrusion 10 continuously rotates to collide with the limiting block 11 so as to drive the filter plate 16 to slide in the chute, and when the protrusion 10 leaves the coinciding position, the filter plate 16 returns to the initial position under the action of the spring 12, so that the filter plate 16 which is vertically connected with the side wall chute in a sliding mode relatively reciprocates; the limiting blocks 11 of the filter plate 16 are distributed on two sides of the toggle ring 9, so that the filter plate 16 can not move towards the same direction to generate gaps in the moving process, and even if the cooling liquid mixed with the cutting waste material does not pass through the first layer of filter plate 16, the second layer of filter plate 16 can play a role in filtering, so that sufficient filtering is achieved, the cutting waste material is left above the filter screen, and the waste material in the cooling liquid can not enter a pipeline to cause blockage; the relative reciprocating motion of the filter plate 16 also enables the vibration of the internal mesh structure of the filter plate 16, preventing the filter plate 16 itself from clogging and the coolant from passing through; no. 8 pivoted of transmission shaft drive a gear 4 simultaneously and rotate, a gear 4 and No. 7 meshing of No. two gears, No. 7 gears drive two-way lead screw 2 and rotate, two-way lead screw 2 pivoted drives screw nut 5 simultaneously and is reciprocating motion on the lead screw, screw nut 5 drives the board 6 motion of pushing away water with 5 fixed connection of screw nut, thereby push away water board 6 and screw nut 5 and be reciprocating motion in cooler bin 1 together, stirring rivers improve heat-sinking capability, beat evenly distributed's through-hole 501 simultaneously on pushing away water board 6, further stir rivers, accelerate the flow rate of water and improve the radiating effect.
As a specific embodiment of the invention, one end of the filter plate 16 without the spring 12 is provided with a sealing ring 15; the sealing ring 15 is fixedly connected with the filter plate 16;
the groove of the end without the spring 12 of the filter plate 16 is provided with a sealing ring 15, when the filter plate 16 is driven by the toggle ring 9 to work, on one hand, the sealing ring can buffer the filter plate 16 and the side wall, and on the other hand, the sealing ring can play a role in fixing the filter plate 16.
As a specific embodiment of the present invention, both sides of the cooling box 1 are provided with uniformly distributed vent holes 101;
and a through hole 101 is formed in the wall of the tank near the water inlet 103, so that internal gas and external gas are exchanged, and the heat dissipation effect at the water inlet 103 is enhanced.
As a specific embodiment of the present invention, a water outlet 102 is provided at one end of the bottom of the cooling box 1;
the bottom of the cooling box 1 is provided with the water outlet 102, so that the filtered and cooled cooling liquid can directly enter the water tank through the water outlet 102, redundant actions are avoided, and the cooling liquid can be fully and repeatedly utilized.
As a specific embodiment of the present invention, the top of the cooling box 1 is provided with a water inlet 103;
the water inlet 103 facilitates that the cooling liquid can directly flow into the cooling tank 1 for filtering after washing the surface of the cutting object.
The working principle is as follows: motor 13 work, the output shaft drives a transmission shaft 8 of fixed connection and rotates, a transmission shaft 8 drives and rotates with a transmission shaft 8 fixed connection stir ring 9, stir ring 9 and filter 16 on correspond the position and all be equipped with protruding 10, stir ring 9 and rotate when 16 stopper 11 coincidence positions with the filter and drive about filter 16 relative rotations, leave behind the coincidence position under the effect of spring 12 filter 16 get back to initial position, thereby make from top to bottom through the filter 16 relative reciprocating motion with lateral wall spout sliding connection. The stopper 11 of upper and lower filter 16 distributes in the different sides of stirring ring 9, can guarantee that filter 16 can not produce the gap to same direction motion in the course of the work to even can make the coolant liquid that is mixing the cutting waste material not pass through first layer filter 16, second floor filter 16 still can play the filtering action, reaches abundant filtration, stays the cutting waste material in the filter screen top, makes the waste material in the coolant liquid can not get into the pipeline and cause the jam. The relative reciprocating movement of the filter screen also shakes the filter screen 16 to prevent the filter screen from becoming clogged and the coolant from passing through. No. 8 pivoted of transmission shaft drive a gear 4 simultaneously and rotate, a gear 4 and No. 7 meshing of No. two gears, No. 7 gears drive two-way lead screw 2 and rotate, two-way lead screw 2 pivoted drives screw nut 5 simultaneously and is reciprocating motion on the lead screw, screw nut 5 drives the board 6 motion of pushing away water with 5 fixed connection of screw nut, thereby push away water board 6 and screw nut 5 and be reciprocating motion in cooler bin 1 together, stirring rivers improve heat-sinking capability, beat evenly distributed's through-hole 501 simultaneously on pushing away water board 6, further stir rivers, accelerate the flow rate of water and improve the radiating effect.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A numerically controlled lathe is characterized in that: the cooling device comprises a cooling box (1), wherein a bidirectional screw rod (2) is arranged at the bottom of the cooling box, and one end of the bidirectional screw rod (2) is rotatably connected with the side wall of the cooling box through a bearing (3); the other end of the bidirectional screw rod (2) penetrates through the cooling box (1) and is fixedly connected with a first gear (4), and the bidirectional screw rod (2) is in threaded connection with a water pushing plate (6) through a screw rod nut (5); the water pushing plate (6) is connected with the side wall of the cooling box in a sliding manner; a second gear (7) is meshed above the first gear (4); the inner ring of the second gear (7) is fixedly connected with a first transmission shaft (8), the first transmission shaft (8) penetrates through the cooling box (1) and the other end of the first transmission shaft is rotatably connected with the side wall of the cooling box (1), the part, located inside the cooling box, of the first transmission shaft (8) is fixedly connected with a stirring ring (9), and two ends of the stirring ring are provided with protrusions (10); the two sides of the toggle ring (9) are provided with filter plates (16), and the corresponding positions of the filter plates (16) and the toggle ring (9) are provided with limit blocks (11); one side of the filter plate (16) and one side of the first transmission shaft (8) in the coaxial direction are fixedly connected with the spring (12), and the other side of the filter plate is connected with the side wall in a sliding manner; the two sides of the filter plate (16) and the first transmission shaft (8) in the non-coaxial direction are in sliding connection with the side wall of the cooling box through sliding chutes; the first transmission shaft (8) penetrates through the side wall part and is fixedly connected with a motor (13); the motor (13) is fixedly connected with the box body (1) through a support (14).
2. The numerically controlled lathe according to claim 1, wherein: one end of the filter plate (16) without the spring is provided with a sealing ring (15); the sealing ring (15) is fixedly connected with the filter plate (16).
3. The numerically controlled lathe according to claim 1, wherein: the water pushing plate (5) is made of aluminum alloy; the surface of the water pushing plate is provided with a plurality of through holes (501) which are uniformly distributed.
4. The numerically controlled lathe according to claim 1, wherein: and vent holes (101) which are uniformly distributed are arranged on two sides of the cooling box (1).
5. The numerically controlled lathe according to claim 1, wherein: and one end of the bottom of the cooling box (1) is provided with a water outlet (102).
6. The numerically controlled lathe according to claim 1, wherein: the top of the cooling box (1) is provided with a water inlet (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136445.9A CN113798913A (en) | 2021-09-27 | 2021-09-27 | Numerical control lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136445.9A CN113798913A (en) | 2021-09-27 | 2021-09-27 | Numerical control lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113798913A true CN113798913A (en) | 2021-12-17 |
Family
ID=78896839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111136445.9A Pending CN113798913A (en) | 2021-09-27 | 2021-09-27 | Numerical control lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113798913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118293658A (en) * | 2024-05-14 | 2024-07-05 | 浙江品诺新材料有限公司 | Nylon material drying heat treatment device and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107670369A (en) * | 2017-11-16 | 2018-02-09 | 葛善文 | A kind of food processing station-service peanut oil filter |
| CN108381289A (en) * | 2018-03-06 | 2018-08-10 | 宋江海 | A kind of lathe oiliness coolant storage tank |
| CN208302315U (en) * | 2018-05-09 | 2019-01-01 | 成都蒲江珂贤科技有限公司 | A kind of herbaceous plant essential oil Multistage filtering device |
| CN210473239U (en) * | 2019-08-29 | 2020-05-08 | 重庆秉南包装有限责任公司 | Filter equipment is used in production of wrapping paper pulp |
| CN211680136U (en) * | 2020-03-23 | 2020-10-16 | 吉林省亿明科技有限公司 | Cooling device for automobile part machining |
| CN111888828A (en) * | 2020-09-01 | 2020-11-06 | 安徽亿智新材料科技有限公司 | Sludge recovery device for aluminum industry |
| JP6807516B1 (en) * | 2019-11-26 | 2021-01-06 | 温州興升環保科技有限公司 | Cutting oil recovery device |
| CN212600622U (en) * | 2020-07-23 | 2021-02-26 | 杭州哈商科技有限公司 | Cooling device for machining |
| CN213105865U (en) * | 2020-07-17 | 2021-05-04 | 郝帅帅 | Water-cooling cutting device for machining |
| CN213313690U (en) * | 2020-07-20 | 2021-06-01 | 成都新宇晟世农业科技有限公司 | Filtration equipment is used in production of strong fragrant rapeseed oil |
| CN213437259U (en) * | 2020-10-27 | 2021-06-15 | 太仓市悦涛金属制品有限公司 | Automatic precise punching device for metal product production process |
-
2021
- 2021-09-27 CN CN202111136445.9A patent/CN113798913A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107670369A (en) * | 2017-11-16 | 2018-02-09 | 葛善文 | A kind of food processing station-service peanut oil filter |
| CN108381289A (en) * | 2018-03-06 | 2018-08-10 | 宋江海 | A kind of lathe oiliness coolant storage tank |
| CN208302315U (en) * | 2018-05-09 | 2019-01-01 | 成都蒲江珂贤科技有限公司 | A kind of herbaceous plant essential oil Multistage filtering device |
| CN210473239U (en) * | 2019-08-29 | 2020-05-08 | 重庆秉南包装有限责任公司 | Filter equipment is used in production of wrapping paper pulp |
| JP6807516B1 (en) * | 2019-11-26 | 2021-01-06 | 温州興升環保科技有限公司 | Cutting oil recovery device |
| CN211680136U (en) * | 2020-03-23 | 2020-10-16 | 吉林省亿明科技有限公司 | Cooling device for automobile part machining |
| CN213105865U (en) * | 2020-07-17 | 2021-05-04 | 郝帅帅 | Water-cooling cutting device for machining |
| CN213313690U (en) * | 2020-07-20 | 2021-06-01 | 成都新宇晟世农业科技有限公司 | Filtration equipment is used in production of strong fragrant rapeseed oil |
| CN212600622U (en) * | 2020-07-23 | 2021-02-26 | 杭州哈商科技有限公司 | Cooling device for machining |
| CN111888828A (en) * | 2020-09-01 | 2020-11-06 | 安徽亿智新材料科技有限公司 | Sludge recovery device for aluminum industry |
| CN213437259U (en) * | 2020-10-27 | 2021-06-15 | 太仓市悦涛金属制品有限公司 | Automatic precise punching device for metal product production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118293658A (en) * | 2024-05-14 | 2024-07-05 | 浙江品诺新材料有限公司 | Nylon material drying heat treatment device and preparation method |
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