CN113733394B - Drying treatment device for injection molding of display screen rubber frame - Google Patents
Drying treatment device for injection molding of display screen rubber frame Download PDFInfo
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- CN113733394B CN113733394B CN202111066102.XA CN202111066102A CN113733394B CN 113733394 B CN113733394 B CN 113733394B CN 202111066102 A CN202111066102 A CN 202111066102A CN 113733394 B CN113733394 B CN 113733394B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
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- Drying Of Solid Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a drying treatment device for injection molding of a display screen rubber frame, which relates to the technical field of rubber frame injection molding and comprises an outer frame, wherein a drying device is arranged in the outer frame close to the right side, an auxiliary mechanism is arranged in the outer frame close to the left side, the drying device comprises a motor, a feeding spiral blade is fixedly arranged at the output end of the motor, an inner box body is fixedly arranged at one end of the feeding spiral blade close to the left side, and a heating device is fixedly arranged on the outer surface of the inner box body. According to the invention, the feeding pipeline is used for feeding the raw materials into the inner box body, the external power supply of the motor is turned on, the auxiliary mechanism is driven to work through the output shaft of the motor, after the raw materials enter the inner box body, the feeding spiral blades rotate, the raw materials in the inner box body are stirred, and at the moment, the heating device is used for heating the inner part of the inner box body, so that part of water in the raw materials is evaporated.
Description
Technical Field
The invention relates to the technical field of plastic frame injection molding, in particular to a drying treatment device for plastic frame injection molding of a display screen.
Background
Injection molding is a method for producing and shaping industrial products. Rubber injection molding and plastic injection molding are commonly used for products, and after moisture-containing materials enter a mold cavity, silver taenience blemishes appear on the surface of the products, and even decomposition phenomena occur at high temperature, so that the materials are deteriorated. Therefore, the material must be baked by a mold temperature machine before the molding process so that the material can maintain proper moisture, and thus the raw material needs to be heated and baked, and a part of the internal moisture is baked.
Disclosure of Invention
The invention aims to solve the defects in the prior art, so that part of water in the raw materials is evaporated.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a display screen glues frame and moulds plastics and use drying device, includes the external frame, the inside that the external frame is close to the right side is provided with drying device, the inside that the external frame is close to the left side is provided with assist mechanism.
The drying device comprises a motor, the output fixed mounting of motor has the material loading spiral leaf, the material loading spiral leaf is close to left one end fixed mounting has inside box, the surface fixed mounting of inside box has heating device, the left side fixed mounting of inside box has the base, the inside box is close to left top fixed mounting and has first pipeline, the surface fixed mounting that first pipeline is close to the other end has the connecting plate, the center department fixed mounting of connecting plate inner wall has the fixed plate, the surface of fixed plate is equipped with the sliding plate through T type draw runner slip cap.
Preferably, the auxiliary mechanism comprises a first belt pulley, a belt is movably sleeved on the outer surface of the first belt pulley, a second belt pulley is movably embedded in the other end of the belt, and a rotating rod is fixedly embedded in the second belt pulley.
Preferably, the bottom of sliding plate inner wall has seted up circular passageway, the bottom fixed mounting of circular passageway has the extrusion piece, the inside fixed mounting of extrusion piece has the second pipeline, the output fixedly connected with first hollow cylinder of second pipeline, two the surface fixed mounting that first hollow cylinder is close to the top has the connection frame, two the inside slip that first hollow cylinder is close to the top has inlayed first movable rod, two equal fixed mounting in top of first movable rod has the extrusion plate, the right side of extrusion piece surface has been seted up with two extrusion plate assorted through-holes, T type recess has all been seted up to the both sides at sliding plate top, two the width of T type recess and the width assorted of two T type slides.
Preferably, the two first hollow cylinders are fixedly arranged on two sides of the inner wall of the extrusion block, through holes matched with the first pipeline are formed in the top of the T-shaped sliding strip, the first pipeline is fixedly arranged at the top of the T-shaped sliding strip, the feeding pipeline is fixedly arranged at the top of the inner box body, which is close to the right side, and the motor is fixedly arranged at the center of the right side of the inner wall of the outer frame through the auxiliary plate.
Preferably, the right side of inside box passes through two bracing pieces fixed mounting in the right side of external frame inner wall, the connecting plate passes through dead lever fixed mounting at the top that external frame is close to left side inner wall, external frame is close to the top on right side and has been seted up with feeding pipeline assorted through-hole, two equal fixed mounting in bottom of stripper plate has compression spring, two equal fixed mounting in the bottom of connecting frame inner wall in the bottom of compression spring.
Preferably, the rotary rod is close to the outer surface fixed mounting on right side and has the rotatory piece, the rotary rod is close to the outer surface fixed mounting on left side and has the stopper, the top fixed mounting that the outer frame is close to the right side inner wall has the gasbag, the outer surface fixed mounting on gasbag right side has the third pipeline, the fixed cover of first belt pulley is established at the surface of motor output shaft.
Preferably, two second hollow cylinders are fixedly arranged at the other end of the third pipeline, second movable rods are movably embedded in the second hollow cylinders, the left sides of the second hollow cylinders are fixedly arranged on the left sides of the inner walls of the outer frames, the right sides of the second hollow cylinders are fixedly arranged on the left sides of the outer surfaces of the extrusion blocks, the right sides of the rotary rods are arranged on the right sides, close to the top, of the outer frames through bearings, and reset springs are arranged in the air bags.
Preferably, the outer frame is fixedly provided with an inclined table top near the bottom of the left inner wall, and the outer frame is provided with a collecting box in a sliding manner near the right side of the center.
Compared with the prior art, the invention has the advantages and positive effects that,
1. according to the invention, the feeding pipeline is used for feeding the raw materials into the inner box body, the external power supply of the motor is turned on, the auxiliary mechanism is driven to work through the output shaft of the motor, after the raw materials enter the inner box body, the feeding spiral blades rotate, the raw materials in the inner box body are stirred, and at the moment, the heating device is used for heating the inner part of the inner box body, so that part of water in the raw materials is evaporated.
2. According to the invention, the extrusion block is driven to move left and right through the auxiliary mechanism, so that the sliding plate is driven to slide on the outer surface of the fixed plate through the two T-shaped grooves and the T-shaped sliding strips, when the sliding plate slides to the bottom of the first pipeline, the extrusion block leaves the base, at the moment, gas in the first pipeline is sent into the two first hollow cylinders through the second pipeline, the two first movable rods and the two extrusion plates move to the right side, the injection molded rubber frame is pushed to the right side, and the rubber frame is sent into the collecting box through the arrangement of the inclined table top.
3. When the quantitative feeding device is used, the output shaft of the motor drives the first belt pulley, the belt and the second belt pulley to rotate, and drives the rotary rod to rotate, so that the limiting block is driven to rotate in the feeding pipeline, and quantitative feeding is performed.
4. According to the invention, the rotating block eccentrically rotates to extrude the air bag, so that gas in the air bag enters the two second hollow cylinders through the third pipeline, the two second movable rods are extruded, the extruding block is attached to the outer surface of the limiting block, when the rotating block does not contact the air bag, the air bag is driven to recover to the original position through the spring in the air bag, and the two second movable rods slide to the left side, so that the effect of matching with a tool to perform injection molding is achieved, and a certain assistance effect is achieved.
Drawings
Fig. 1 is a schematic diagram showing a front cross-sectional structure of a drying treatment device for injection molding of a display screen rubber frame;
fig. 2 is a schematic diagram of a part of a drying device of a drying treatment device for injection molding of a display screen rubber frame;
fig. 3 is a schematic diagram showing the internal structure of an extrusion block of a drying treatment device for injection molding of a display screen rubber frame;
fig. 4 is a schematic diagram of an auxiliary mechanism of a drying treatment device for injection molding of a display screen rubber frame according to the present invention;
fig. 5 is an enlarged view of a position a in fig. 1 of a drying treatment device for injection molding of a display screen rubber frame;
fig. 6 is a schematic side view of a sliding plate of a drying device for injection molding of a display screen rubber frame according to the present invention.
Legend description:
1. an outer frame; 2. a drying device; 201. a motor; 202. a support rod; 203. a feed conduit; 204. an inner case; 205. a heating device; 206. a base; 207. a first pipe; 208. a connecting plate; 209. a fixing plate; 210. a T-shaped slide bar; 211. extruding a block; 212. a sliding plate; 213. a T-shaped groove; 214. a circular channel; 215. a first hollow cylinder; 216. a second pipe; 217. a first movable lever; 218. a connection frame; 219. an extrusion plate; 220. a compression spring; 221. feeding spiral leaves; 3. an auxiliary mechanism; 301. a first pulley; 302. a belt; 303. a second movable rod; 304. a second pulley; 305. a rotating rod; 306. a limiting block; 307. an air bag; 308. a rotating block; 309. a third conduit; 310. a second hollow cylinder; 4. a fixed rod; 5. tilting the table top; 6. and (5) collecting a box.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
In embodiment 1, as shown in fig. 1-6, the invention provides a drying treatment device for injection molding of a display screen rubber frame, which comprises an outer frame 1, wherein a drying device 2 is arranged in the outer frame 1 near the right side, and an auxiliary mechanism 3 is arranged in the outer frame 1 near the left side.
The drying device 2 and the auxiliary mechanism 3 are specifically arranged and function in the following.
As shown in fig. 1 to 6, the drying device 2 comprises a motor 201, a feeding spiral blade 221 is fixedly arranged at the output end of the motor 201, an inner box 204 is fixedly arranged at one end of the feeding spiral blade 221 close to the left side, a heating device 205 is fixedly arranged at the outer surface of the inner box 204, a base 206 is fixedly arranged at the left side of the inner box 204, a first pipeline 207 is fixedly arranged at the top of the inner box 204 close to the left side, a connecting plate 208 is fixedly arranged at the outer surface of the first pipeline 207 close to the other end, a fixing plate 209 is fixedly arranged at the center of the inner wall of the connecting plate 208, a sliding plate 212 is sleeved on the outer surface of the fixing plate 209 in a sliding way through a T-shaped sliding bar 210, a circular channel 214 is arranged at the bottom of the inner wall of the sliding plate 212, a squeezing block 211 is fixedly arranged at the bottom of the circular channel 214, a second pipeline 216 is fixedly arranged inside the squeezing block 211, a first hollow cylinder 215 is fixedly connected at the output end of the second pipeline 216, the outer surfaces of the two first hollow cylinders 215 close to the top are fixedly provided with connecting frames 218, the inner parts of the two first hollow cylinders 215 close to the top are slidably embedded with first movable rods 217, the tops of the two first movable rods 217 are fixedly provided with extrusion plates 219, the right side of the outer surface of each extrusion block 211 is provided with through holes matched with the two extrusion plates 219, the two sides of the top of each sliding plate 212 are provided with T-shaped grooves 213, the widths of the two T-shaped grooves 213 are matched with the widths of the two T-shaped sliding strips 210, the two first hollow cylinders 215 are fixedly arranged on the two sides of the inner wall of each extrusion block 211, the tops of the T-shaped sliding strips 210 are provided with through holes matched with first pipelines 207, the first pipelines 207 are fixedly arranged at the tops of the T-shaped sliding strips 210, the tops of the inner box 204 close to the right side are fixedly provided with feed pipelines 203, the motor 201 is fixedly installed at the center of the right side of the inner wall of the outer frame 1 through an auxiliary plate, the right side of the inner box 204 is fixedly installed at the right side of the inner wall of the outer frame 1 through two supporting rods 202, the connecting plate 208 is fixedly installed at the top of the inner wall of the outer frame 1 close to the left side through a fixing rod 4, through holes matched with the feeding pipelines 203 are formed in the top of the outer frame 1 close to the right side, compression springs 220 are fixedly installed at the bottoms of the two compression plates 219, the bottoms of the two compression springs 220 are fixedly installed at the bottoms of the inner walls of the connecting frame 218, an inclined table top 5 is fixedly installed at the bottom of the inner wall of the outer frame 1 close to the left side, and a collecting box 6 is slidably installed at the right side of the outer frame 1 close to the center.
The effect that its whole drying device 2 reached is, when using, the inside feeding to inside box 204 through feeding pipeline 203, the external power supply of motor 201 is opened this moment, drive assist mechanism 3 through the output shaft of motor 201 and work, after the raw materials gets into inside box 204, the material loading spiral leaf 221 rotates, stir the inside raw materials of inside box 204, and send the raw materials into outside base 206 through the setting of material loading spiral leaf 221, at this moment, heat the inside of inside box 204 through heating device 205, make a portion of water in the raw materials evaporate, discharge through first pipeline 207, at this moment drive extrusion piece 211 through assist mechanism 3 and control and remove, make drive slide plate 212 through two T type recesses 213 and T type slide bar 210 slide at the surface of fixed plate 209, when slide plate 212 slides to the bottom of first pipeline 207, the gas in the first pipeline 207 is sent into the inside of two first hollow cylinders 215 through second pipeline 216 this moment, with two first movable rods 217 and two extrusion plates 219 move the side to the right, carry out the slope to carry out in the frame of side 5 and send into the collection box after the plastic molding, set up in the mesa 6.
As shown in fig. 1-6, the auxiliary mechanism 3 comprises a first belt pulley 301, a belt 302 is movably sleeved on the outer surface of the first belt pulley 301, a second belt pulley 304 is movably embedded in the other end of the belt 302, a rotary rod 305 is fixedly embedded in the second belt pulley 304, a rotary block 308 is fixedly installed on the outer surface of the rotary rod 305 close to the right side, a limiting block 306 is fixedly installed on the outer surface of the rotary rod 305 close to the left side, an air bag 307 is fixedly installed on the top of the outer frame 1 close to the right side inner wall, a third pipeline 309 is fixedly installed on the outer surface of the right side of the air bag 307, the first belt pulley 301 is fixedly sleeved on the outer surface of the output shaft of the motor 201, two second hollow cylinders 310 are fixedly installed at the other end of the third pipeline 309, second movable rods 303 are movably embedded in the two second hollow cylinders 310, the left sides of the two second hollow cylinders 310 are fixedly installed on the left side of the inner wall of the outer frame 1, the right sides of the two second hollow cylinders 310 are fixedly installed on the left side of the outer surface of the extrusion block 211, the right side of the rotary rod 305 is installed on the right side of the outer frame 1 close to the top through a bearing, and a reset spring is installed in the inner of the air bag 307.
The whole auxiliary mechanism 3 has the advantages that when the auxiliary mechanism is used, the output shaft of the motor 201 drives the first belt pulley 301, the belt 302 and the second belt pulley 304 to rotate, and drives the rotating rod 305 to rotate, so that the limiting block 306 is driven to rotate in the feeding pipeline 203, quantitative blanking is performed, at the moment, the rotating block 308 is driven to eccentrically rotate, the air bag 307 is extruded, air in the air bag 307 enters the two second hollow cylinders 310 through the third pipeline 309, so that the two second movable rods 303 are extruded, the extruding block 211 is attached to the outer surface of the limiting block 306, when the rotating block 308 does not contact the air bag 307, the air bag 307 is driven to restore to the original position through the spring in the air bag 307, and the two second movable rods 303 slide leftwards, so that the effect of assisting a matched tool to perform injection molding is achieved.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a display screen glues frame and moulds plastics with drying treatment device, includes external frame (1), its characterized in that: the drying device (2) is arranged in the outer frame (1) close to the right side, and the auxiliary mechanism (3) is arranged in the outer frame (1) close to the left side;
the drying device (2) comprises a motor (201), a feeding spiral blade (221) is fixedly arranged at the output end of the motor (201), an inner box body (204) is fixedly arranged at one end, close to the left side, of the feeding spiral blade (221), a heating device (205) is fixedly arranged on the outer surface of the inner box body (204), a base (206) is fixedly arranged at the left side of the inner box body (204), a first pipeline (207) is fixedly arranged at the top, close to the left side, of the inner box body (204), a connecting plate (208) is fixedly arranged on the outer surface, close to the other end, of the first pipeline (207), a fixing plate (209) is fixedly arranged at the center of the inner wall of the connecting plate (208), and a sliding plate (212) is arranged on the outer surface of the fixing plate (209) through a T-shaped sliding strip (210) sliding sleeve;
the auxiliary mechanism (3) comprises a first belt pulley (301), a belt (302) is movably sleeved on the outer surface of the first belt pulley (301), a second belt pulley (304) is movably embedded in the other end of the belt (302), and a rotary rod (305) is fixedly embedded in the second belt pulley (304);
circular passageway (214) have been seted up to the bottom of sliding plate (212) inner wall, the bottom fixed mounting of circular passageway (214) has extrusion piece (211), the inside fixed mounting of extrusion piece (211) has second pipeline (216), the output fixedly connected with first hollow cylinder (215) of second pipeline (216), two the surface fixed mounting that first hollow cylinder (215) is close to the top has linking frame (218), two the inside slip that first hollow cylinder (215) is close to the top has inlayed first movable rod (217), two the equal fixed mounting in top of first movable rod (217) has extrusion board (219), the through-hole with two extrusion board (219) assorted is seted up on the right side of extrusion piece (211) surface, T type recess (213) have all been seted up to the both sides at sliding plate (212) top, two the width of T type recess (213) and the width assorted of two T type draw runner (210).
2. The drying treatment device for injection molding of a display screen rubber frame according to claim 1, wherein: two the equal fixed mounting of first hollow cylinder (215) is in the both sides of extrusion piece (211) inner wall, through-hole with first pipeline (207) assorted is seted up at the top of T type draw runner (210), first pipeline (207) fixed mounting is at the top of T type draw runner (210), inside box (204) are close to the top fixed mounting on right side and have feeding pipeline (203), motor (201) are through accessory plate fixed mounting in the center department on outer frame (1) inner wall right side.
3. The drying treatment device for injection molding of a display screen rubber frame according to claim 2, wherein: the right side of inside box (204) is through the right side of two bracing pieces (202) fixed mounting at outer frame (1) inner wall, connecting plate (208) are through dead lever (4) fixed mounting at the top that outer frame (1) is close to left side inner wall, outer frame (1) is close to the top on right side and has been seted up with feeding pipeline (203) assorted through-hole, two the bottom of stripper plate (219) is equal fixed mounting have compression spring (220), two the bottom of compression spring (220) is equal fixed mounting in the bottom of connecting frame (218) inner wall.
4. The drying treatment device for injection molding of a display screen rubber frame according to claim 1, wherein: the rotary rod (305) is close to the surface fixed mounting on right side and has rotatory piece (308), the surface fixed mounting that the rotary rod (305) is close to the left side has stopper (306), the top fixed mounting that the outer frame (1) is close to the right side inner wall has gasbag (307), the surface fixed mounting on gasbag (307) right side has third pipeline (309), the surface at motor (201) output shaft is established to first belt pulley (301) fixed cover.
5. The drying treatment device for injection molding of a display screen rubber frame according to claim 4, wherein: the other end of the third pipeline (309) is fixedly provided with two second hollow cylinders (310), the inside of each second hollow cylinder (310) is movably embedded with a second movable rod (303), the left sides of the two second hollow cylinders (310) are fixedly arranged on the left side of the inner wall of the outer frame (1), the right sides of the two second hollow cylinders (310) are fixedly arranged on the left side of the outer surface of the extrusion block (211), the right sides of the rotary rods (305) are arranged on the right side, close to the top, of the outer frame (1) through bearings, and the inside of the air bags (307) is provided with reset springs.
6. A drying treatment device for injection molding of a display screen rubber frame as claimed in claim 1, wherein
The method comprises the following steps: the bottom of the outer frame (1) close to the left inner wall is fixedly provided with an inclined table top (5),
the right side of the outer frame (1) close to the center is provided with a collecting box (6) in a sliding way.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111066102.XA CN113733394B (en) | 2021-09-13 | 2021-09-13 | Drying treatment device for injection molding of display screen rubber frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111066102.XA CN113733394B (en) | 2021-09-13 | 2021-09-13 | Drying treatment device for injection molding of display screen rubber frame |
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| CN113733394A CN113733394A (en) | 2021-12-03 |
| CN113733394B true CN113733394B (en) | 2023-07-07 |
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| CN114391481B (en) * | 2021-12-14 | 2022-10-11 | 中国人民解放军空军军医大学 | Can improve low pressure oxygen cabin for animal experiments of pipe connection leakproofness |
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| CA1176017A (en) * | 1984-02-01 | 1984-10-16 | Mapro Inc. | Method and apparatus for removing moisture and volatiles from molding particulate plastic material feed |
| CN209895111U (en) * | 2019-06-19 | 2020-01-03 | 重庆步鸣光电科技有限公司 | Adjustable liquid crystal display rubber frame |
| CN210675719U (en) * | 2019-09-26 | 2020-06-05 | 天长市旭升热工仪表配件有限公司 | Spraying and drying device for instrument shell |
| DE212020000261U1 (en) * | 2020-07-02 | 2020-12-02 | Suzhou Jinweibo Precision Machinery Technology Co., Ltd. | An injection mold with a buffer protection function |
| CN112902606A (en) * | 2021-01-18 | 2021-06-04 | 重庆新涛高新材料科技有限公司 | Drying device is used in white carbon black processing |
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| EP2435229A4 (en) * | 2009-05-28 | 2013-01-09 | Husky Injection Molding | A polymer treatment device for providing a treatment to a polymer bed, a computer-readable medium associated with a controller thereof, and an associated molding system |
| CN111976079A (en) * | 2020-06-24 | 2020-11-24 | 湖州吴兴旭诚塑料制品有限公司 | Injection molding machine for processing modified plastics |
| CN214111349U (en) * | 2020-12-25 | 2021-09-03 | 苏州回蓝环保科技有限公司 | Injection molding machine injection molding screw structure convenient to disassemble and assemble |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1176017A (en) * | 1984-02-01 | 1984-10-16 | Mapro Inc. | Method and apparatus for removing moisture and volatiles from molding particulate plastic material feed |
| CN209895111U (en) * | 2019-06-19 | 2020-01-03 | 重庆步鸣光电科技有限公司 | Adjustable liquid crystal display rubber frame |
| CN210675719U (en) * | 2019-09-26 | 2020-06-05 | 天长市旭升热工仪表配件有限公司 | Spraying and drying device for instrument shell |
| DE212020000261U1 (en) * | 2020-07-02 | 2020-12-02 | Suzhou Jinweibo Precision Machinery Technology Co., Ltd. | An injection mold with a buffer protection function |
| CN112902606A (en) * | 2021-01-18 | 2021-06-04 | 重庆新涛高新材料科技有限公司 | Drying device is used in white carbon black processing |
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