CN111846679B - Cored wire feeding spheroidizing cover lifting mechanism - Google Patents
Cored wire feeding spheroidizing cover lifting mechanism Download PDFInfo
- Publication number
- CN111846679B CN111846679B CN202010688993.1A CN202010688993A CN111846679B CN 111846679 B CN111846679 B CN 111846679B CN 202010688993 A CN202010688993 A CN 202010688993A CN 111846679 B CN111846679 B CN 111846679B
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- China
- Prior art keywords
- chain
- main shaft
- cover
- lifting
- support
- 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.)
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 78
- 229910052742 iron Inorganic materials 0.000 claims abstract description 39
- 239000000779 smoke Substances 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 8
- 230000003028 elevating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 18
- 230000000149 penetrating effect Effects 0.000 description 18
- 230000006698 induction Effects 0.000 description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 206010000372 Accident at work Diseases 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001126 Compacted graphite iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/54—Gates or closures
- B65D90/66—Operating devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2590/00—Component parts, details or accessories for large containers
- B65D2590/54—Gates or closures
- B65D2590/66—Operating devices therefor
- B65D2590/664—Operating devices therefor actuating mechanism other than manual, e.g. pneumatic, electropneumatic, hydraulic, electromagnetic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a cored wire feeding spheroidizing cover lifting mechanism which comprises a top plate, a lifting driving system, a cover and a limiting device, wherein a support, a main shaft seat, a first auxiliary shaft seat and a second auxiliary shaft seat are arranged on the top plate; the lifting driving system consists of an air cylinder, a single connector, a first chain, a main shaft, a second chain, a double connector, a third chain, a fourth chain and lifting lugs; the ladle cover is connected with the lifting lug, the limiting device is arranged at the end part of the main shaft, stable and automatic lifting of the ladle cover is realized, the work injury accident of scalding of workers is avoided, the lifting position is controlled by the sensor, the height of each ladle cover from the liquid level of molten iron is the same, the spheroidizing effect is ensured, and in addition, the long groove on the ladle cover is suitable for two lifting lug seats of the molten iron ladle.
Description
Technical Field
The invention belongs to the technical field of casting equipment, and particularly relates to a cored wire feeding spheroidizing cover lifting mechanism.
Background
At present, a wire feeding method is used for producing iron castings, namely, a cored wire coated with alloy elements is directly inserted into molten iron to produce ductile iron, vermicular iron and inoculated cast iron.
In the cored wire feeding method, when magnesium is in contact reaction with molten iron, the magnesium is gasified rapidly and forms a certain magnesium steam pressure between the liquid level and a ladle cover, and the ladle cover is added on the molten iron ladle, so that the burning loss of the magnesium is reduced, the absorption rate of the magnesium is improved, and the magnesium light and smoke dust are reduced. The prior art covers are divided into fixed covers and mobile covers. In addition, the existing ladle cover is mostly formed by adopting steel plate molding and internally-built refractory materials, on one hand, due to the heavy weight, the whole process of covering the ladle cover to the molten iron ladle cover is required to be completed by aid of auxiliary tools such as travelling crane and the like, the operation is difficult, and the proper pouring time is difficult to ensure.
The fixed ladle cover is generally fastened with the molten iron ladle by adopting bolts, and the whole spheroidizing process is always carried out with the molten iron ladle, so that the fixed ladle cover is easy to burn and other industrial accidents because the fixed ladle cover is required to be closely contacted with the molten iron ladle by a worker.
The self-lifting ladle cover method in the mobile ladle cover has higher requirements on the device and can be completed only by the acquiescing cooperation of manpower.
Disclosure of Invention
The invention provides a covering lifting mechanism for spheroidizing cored wire feeding, which realizes stable and automatic lifting of a covering, avoids industrial injury accidents of scalding of workers, ensures that the height of the covering from the liquid level of molten iron is the same each time by controlling the lifting position by a sensor, ensures spheroidizing effect, and adapts to two lifting lugs of a molten iron ladle by virtue of a long groove on the covering.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the cored wire feeding spheroidizing cover lifting mechanism comprises a top plate, a lifting driving system, a cover and a limiting device, wherein a support, a main shaft seat, a secondary shaft seat I and a secondary shaft seat II are arranged on the top plate, a secondary chain wheel I is rotatably arranged on the secondary shaft seat I, and a secondary chain wheel II is rotatably arranged on the secondary shaft seat II;
the lifting driving system consists of a cylinder, a single connector, a first chain, a main shaft, a second chain, a double-connection joint, a third chain, a fourth chain and a lifting lug, wherein the cylinder is fixedly connected with the upper end of a bracket, the single connector is fixedly connected with the end part of a piston rod of the cylinder, the main shaft is rotationally connected with a main shaft seat, a first chain wheel is arranged in the middle of the main shaft, two chain wheels are arranged at two ends of the main shaft, one end of the first chain is hinged with the single connector, the other end of the first chain is in winding connection and fixed with the first chain wheel, one end of the second chain is in winding connection and fixed with the second chain wheel, the other end of the second chain is hinged with the double-connection joint, one end of the third chain is hinged with the lower end of the double-connection joint, the other end of the third chain is hinged with the lifting lug, one end of the fourth chain is hinged with the upper end of the double-connection joint, the other end of the fourth chain is hinged with the lifting lug, and the fourth chain spans from the second chain;
the ladle cover is connected with the lifting lug, and the limiting device is arranged at the end part of the main shaft.
Preferably, the ladle cover is symmetrically provided with long grooves, and a bottom ladle cover is arranged in the middle of the ladle cover.
Preferably, the top plate is provided with a first wire penetrating hole and a first smoke discharging hole, the cover is provided with a second wire penetrating hole and a second smoke discharging hole, the first wire penetrating hole is communicated with the second wire penetrating hole through a corrugated pipe, and the first smoke discharging hole is communicated with smoke discharging Kong Ertong through the corrugated pipe.
Preferably, the limiting device comprises a screw, a nut, an induction iron sheet, a first support and a second support, wherein the screw is connected with a coaxial screw pair at the end part of the main shaft, the nut is screwed on the screw, the induction iron sheet is fixedly connected with the end part of the screw, the first support and the second support are connected with a top plate and are respectively positioned at two sides of the main shaft, the first support is provided with a first sensor, and the second support is provided with a second sensor.
The beneficial effects of adopting above technical scheme are:
1. this cored wire feed spheroidizing ladle lid elevating system, the ladle that will be equipped with the molten iron is sent to the ladle through the dolly under, then start the cylinder in the lift actuating system, the piston rod of cylinder stretches out, single connector and first chain down motion, main shaft and sprocket one clockwise rotation, sprocket two clockwise rotation, then second chain, double-link joint, third chain and fourth chain move to the right side, then lug and ladle are down moved, make the ladle lid on the molten iron ladle, otherwise, the piston rod shrink of cylinder, the ladle lid is up moved, the stable automatic lift of ladle lid has been realized, avoid the industrial accident that the workman takes place the scald.
2. The limiting device consists of a screw rod, a nut, an induction iron sheet, a support I and a support II, wherein the screw rod is connected with a coaxial screw pair at the end part of the main shaft, the nut is screwed on the screw rod, the induction iron sheet is fixedly connected with the end part of the screw rod, the support I and the support II are connected with a top plate and are respectively positioned at two sides of the main shaft, a sensor I is arranged on the support I, a sensor II is arranged on the support II, when the induction iron sheet is close to the sensor I, the piston rod of the cylinder contracts and stops, the upward movement of the ladle cover stops, when the induction iron sheet is close to the sensor II, the piston rod of the cylinder stretches out and stops, the downward movement of the ladle cover stops, and the lifting position is controlled by the sensor, so that the height of each ladle cover from the liquid level of molten iron is the same, and the spheroidizing effect is ensured.
Elongated slots are symmetrically arranged on the ladle cover and are suitable for two lifting lug seats of the molten iron ladle; the ladle cover is arranged in the middle of the ladle cover, so that the ladle cover can be inserted into the molten iron ladle, and the sealing performance is ensured.
The top plate is provided with a first wire penetrating hole and a first smoke discharging hole, the cover is provided with a second wire penetrating hole and a second smoke discharging hole, the first wire penetrating hole is communicated with the second wire penetrating hole through a corrugated pipe, the first smoke discharging hole is communicated with the smoke discharging Kong Ertong through the corrugated pipe, and the cover can be lifted freely through the corrugated pipe, so that the arrangement of the wire penetrating pipe and the smoke discharging pipe is not affected.
Drawings
FIG. 1 is an overall assembly diagram of a cored wire feeding spheroidizing cover lifting mechanism;
FIG. 2 is a schematic diagram of a lift drive system;
wherein:
1. a top plate; 2. a lifting driving system; 3. covering; 4. a limiting device;
10. a bracket; 11. a spindle base; 12. an auxiliary shaft seat I; 12-1, a first auxiliary sprocket; 13. a second auxiliary shaft seat; 13-1, a secondary chain wheel II; 14. threading a first thread hole; 15. a smoke exhaust hole I;
20. a cylinder; 21. a single connector; 22. a first chain; 23. a main shaft; 23-1, sprocket one; 23-2, a second chain wheel; 24. a second chain; 25. a double-connection joint; 26. a third chain; 27. a fourth chain; 28. lifting lugs;
30. a long groove; 31. a ladle cover; 32. threading holes II; 33. a smoke exhaust hole II;
40. a screw; 41. a nut; 42. sensing an iron sheet; 43. a first support; 43-1, sensor one; 44. a second support; 44-1, sensor two.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the invention, and to aid in its practice, by those skilled in the art.
As shown in fig. 1 to 2, the invention relates to a covering lifting mechanism for spheroidizing cored wires by feeding wires, which realizes stable and automatic lifting of covering, avoids industrial injury accidents of scalding of workers, and ensures spheroidizing effect by controlling lifting positions by a sensor so that the covering is the same in height from the liquid level of molten iron each time, and in addition, long grooves on the covering adapt to two lifting lugs of a molten iron ladle.
Specifically, as shown in fig. 1 to 2, the lifting drive system comprises a top plate 1, a lifting drive system 2, a ladle cover 3 and a limiting device 4, wherein a bracket 10, a main shaft seat 11, a first auxiliary shaft seat 12 and a second auxiliary shaft seat 13 are arranged on the top plate 1, a first auxiliary chain wheel 12-1 is rotatably arranged on the first auxiliary shaft seat 12, and a second auxiliary chain wheel 13-1 is rotatably arranged on the second auxiliary shaft seat 13;
the lifting driving system 2 consists of an air cylinder 20, a single connector 21, a first chain 22, a main shaft 23, a second chain 24, a double-connection joint 25, a third chain 26, a fourth chain 27 and a lifting lug 28, wherein the air cylinder 20 is fixedly connected with the upper end of the bracket 10, the single connector 21 is fixedly connected with the end part of a piston rod of the air cylinder 20, the main shaft 23 is rotatably connected with the main shaft seat 11, a chain wheel I23-1 is arranged in the middle of the main shaft 23, chain wheels II 23-2 are arranged at two ends of the main shaft 23, one end of the first chain 22 is hinged with the single connector 21, the other end of the first chain 22 is in winding connection and fixing with the chain wheel I23-1, one end of the second chain 24 is in winding connection and fixing with the chain wheels II 23-2, the other end of the second chain 24 is in winding connection with the double-connection joint 25, one end of the third chain 26 is in winding connection with the lower end of the double-connection joint 25, the other end of the third chain 26 is hinged with the lifting lug 28, one end of the third chain 26 is crossed from the auxiliary chain wheel I12-1, one end of the fourth chain 27 is hinged with the upper end of the double-connection joint 25, the other end of the fourth chain 27 is hinged with the lifting lug 28, and the fourth chain 27 is crossed from the auxiliary chain II 13-1;
the ladle cover 3 is connected with the lifting lug 28, and the limiting device 4 is arranged at the end part of the main shaft 23.
As shown in fig. 2, the ladle cover 3 is symmetrically provided with long slots 30, and a ladle cover 31 is arranged in the middle of the ladle cover 3.
As shown in fig. 1 and 2, the top plate 1 is provided with a first wire penetrating hole 14 and a first smoke discharging hole 15, the cover 3 is provided with a second wire penetrating hole 32 and a second smoke discharging hole 33, the first wire penetrating hole 14 and the second wire penetrating hole 32 are connected through a corrugated pipe, and the first smoke discharging hole 15 and the second smoke discharging hole 33 are connected through a corrugated pipe.
As shown in fig. 1, the limiting device 4 is composed of a screw 40, a nut 41, an induction iron sheet 42, a first support 43 and a second support 44, the screw 40 is connected with the end part of the main shaft 23 in a coaxial screw pair, the nut 41 is screwed on the screw 40, the induction iron sheet 42 is fixedly connected with the end part of the screw 40, the first support 43 and the second support 44 are connected with the top plate 1 and are respectively positioned on two sides of the main shaft 23, the first support 43 is provided with a first sensor 43-1, and the second support 44 is provided with a second sensor 44-1.
The following describes specific modes of operation with specific examples:
example 1:
the cored wire feeding spheroidizing ladle cover lifting mechanism sends a ladle filled with molten iron to the position right below the ladle cover 3 through a trolley, then a cylinder 20 in a lifting driving system 2 is started, a piston rod of the cylinder 20 stretches out, a single connector 21 and a first chain 22 move downwards, a main shaft 23 and a first chain wheel 23-1 rotate clockwise, a second chain wheel 23-2 rotate clockwise, a second chain 24, a double connector 25, a third chain 26 and a fourth chain 27 move rightwards, then a lifting lug 28 and the ladle cover 3 move downwards, so that the ladle cover 3 covers the molten iron ladle, otherwise, a piston rod of the cylinder 20 contracts, the ladle cover 3 moves upwards, stable and automatic lifting of the ladle cover is realized, and a scalding industrial accident of workers is avoided.
Example 2:
on the basis of the embodiment 1, the limiting device 4 is composed of a screw rod 40, a nut 41, an induction iron sheet 42, a first support 43 and a second support 44, the screw rod 40 is connected with the end part of the main shaft 23 in a coaxial screw pair, the nut 41 is screwed on the screw rod 40, the induction iron sheet 42 is fixedly connected with the end part of the screw rod 40, the first support 43 and the second support 44 are connected with the top plate 1 and are respectively positioned on two sides of the main shaft 23, a first sensor 43-1 is arranged on the first support 43, a second sensor 44-1 is arranged on the second support 44, when the induction iron sheet 42 is close to the first sensor 43-1, the piston rod of the cylinder 20 is contracted and stopped, the upward movement of the ladle cover 3 is stopped, when the induction iron sheet 42 is close to the second sensor 44-1, the piston rod of the cylinder 20 is stretched out and stopped, the downward movement of the ladle cover 3 is stopped, and the lifting position is controlled by the sensors, so that the height of each ladle cover from the iron liquid level is the same, and the spheroidizing effect is ensured.
Elongated slots 30 are symmetrically arranged on the ladle cover 3, so that two lifting lug seats of the molten iron ladle are adapted; the ladle cover 31 is arranged in the middle of the ladle cover 3, so that the ladle cover 31 can be inserted into a molten iron ladle, and the sealing performance is ensured.
The top plate 1 is provided with a first wire penetrating hole 14 and a first smoke discharging hole 15, the cover 3 is provided with a second wire penetrating hole 32 and a second smoke discharging hole 33, the first wire penetrating hole 14 and the second wire penetrating hole 32 are communicated and connected through a corrugated pipe, the first smoke discharging hole 15 and the second smoke discharging hole 33 are communicated and connected through the corrugated pipe, and the cover 3 can be freely lifted by arranging the corrugated pipe, so that the arrangement of a wire penetrating pipeline and a smoke discharging pipeline is not influenced.
While the invention has been described above by way of example with reference to the accompanying drawings, it is to be understood that the invention is not limited to the particular embodiments described, but is capable of numerous insubstantial modifications of the inventive concept and solution; or the invention is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the invention.
Claims (2)
1. The utility model provides a cored wire feeds silk spheroidization and covers elevating system which characterized in that: the lifting type auxiliary chain wheel comprises a top plate (1), a lifting driving system (2), a cover (3) and a limiting device (4), wherein a support (10), a main shaft seat (11), an auxiliary shaft seat I (12) and an auxiliary shaft seat II (13) are arranged on the top plate (1), an auxiliary chain wheel I (12-1) is rotatably arranged on the auxiliary shaft seat I (12), and an auxiliary chain wheel II (13-1) is rotatably arranged on the auxiliary shaft seat II (13);
the lifting driving system (2) consists of an air cylinder (20), a single connector (21), a first chain (22), a main shaft (23), a second chain (24), a double-connection joint (25), a third chain (26), a fourth chain (27) and a lifting lug (28), wherein the air cylinder (20) is fixedly connected with the upper end of the bracket (10), the single connector (21) is fixedly connected with the end part of a piston rod of the air cylinder (20), the main shaft (23) is rotatably connected with a main shaft seat (11), a sprocket I (23-1) is arranged in the middle of the main shaft (23), two ends of the main shaft (23) are provided with a sprocket II (23-2), one end of the first chain (22) is hinged with the single connector (21), the other end of the first chain (22) is in winding connection and fixing with the sprocket I (23-1), one end of the second chain (24) is in winding connection and fixing with the double-connection joint (25), one end of the third chain (26) is hinged with the lower end of the double-connection joint (25), the other end of the third chain (26) is hinged with the lower end of the double-connection joint (28), the second chain (26) is in crossing the first chain (12-1) and the double-connection joint (28) is hinged with the other end of the second chain (27), a fourth chain (27) spans from the secondary sprocket II (13-1);
the ladle cover (3) is connected with the lifting lug (28), and the limiting device (4) is arranged at the end part of the main shaft (23);
the top plate (1) is provided with a first threading hole (14) and a first smoke exhaust hole (15), the cover (3) is provided with a second threading hole (32) and a second smoke exhaust hole (33), the first threading hole (14) and the second threading hole (32) are communicated and connected through a corrugated pipe, and the first smoke exhaust hole (15) and the second smoke exhaust hole (33) are communicated and connected through the corrugated pipe;
stop device (4) are by screw rod (40), nut (41), response iron sheet (42), support one (43) and support two (44) are constituteed, screw rod (40) are connected with the coaxial spiral pair of main shaft (23) tip, nut (41) are twisted on screw rod (40), response iron sheet (42) are connected with screw rod (40) tip fastening, support one (43) and support two (44) are connected with roof (1), and are located main shaft (23) both sides respectively, be equipped with sensor one (43-1) on support one (43), be equipped with sensor two (44-1) on support two (44).
2. The cored wire feeding spheroidizing cover lifting mechanism of claim 1, wherein: elongated slots (30) are symmetrically arranged on the ladle cover (3), and a bottom ladle cover (31) is arranged in the middle of the ladle cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688993.1A CN111846679B (en) | 2020-07-17 | 2020-07-17 | Cored wire feeding spheroidizing cover lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688993.1A CN111846679B (en) | 2020-07-17 | 2020-07-17 | Cored wire feeding spheroidizing cover lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111846679A CN111846679A (en) | 2020-10-30 |
| CN111846679B true CN111846679B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010688993.1A Active CN111846679B (en) | 2020-07-17 | 2020-07-17 | Cored wire feeding spheroidizing cover lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111846679B (en) |
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| CN206706174U (en) * | 2017-05-19 | 2017-12-05 | 三祥新材（宁夏）有限公司 | A kind of double-contracting lid spheroidising station |
| CN107299193A (en) * | 2017-06-21 | 2017-10-27 | 湖北高新智控机械有限公司 | Molten steel extra furnace dephosphorization processing system and its method based on composite blowing method |
| CN107812855A (en) * | 2017-10-24 | 2018-03-20 | 上海翁大电气科技有限公司 | A kind of machining apparatus of automatic puncher |
| CN212314510U (en) * | 2020-07-17 | 2021-01-08 | 芜湖市和蓄机械股份有限公司 | Core-spun yarn feeding spheroidizing ladle cover lifting mechanism |
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