CN212232235U - Straw cuts off breaker - Google Patents
Straw cuts off breaker Download PDFInfo
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- CN212232235U CN212232235U CN202020729061.2U CN202020729061U CN212232235U CN 212232235 U CN212232235 U CN 212232235U CN 202020729061 U CN202020729061 U CN 202020729061U CN 212232235 U CN212232235 U CN 212232235U
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- conveying roller
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Abstract
The utility model provides a straw cutting and crushing device, which relates to the technical field of agricultural machinery, and comprises a frame, a first shell connected with the frame, a feeding mechanism connected with the frame; the cutting mechanism is connected with the rack and the feeding mechanism and comprises a first cutting structure and a second cutting structure, the first cutting structure is connected with the feeding mechanism and the rack, and the second cutting structure is arranged inside the first shell; crushed aggregates mechanism, including first crushed aggregates structure and second crushed aggregates structure, first crushed aggregates structure is connected with second blank structure, and first crushed aggregates structure all set up in the inside of first casing, and second crushed aggregates structure sets up on the inner wall of first casing. The utility model discloses a blank mechanism cuts off the straw fully, broken knot, and rethread feed crushing mechanism further cuts off, the breakage, and shredding effect is good, and production efficiency is high, and simple structure is compact, low cost.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, particularly, relate to a straw cuts off breaker.
Background
The straw is an important biomass resource, is widely applied in the aspects of industry, agriculture, animal husbandry and the like, particularly as a feed, not only reduces the waste of resources, but also solves the problem of insufficient concentrated feed, and most of the straw can be effectively utilized only when the cut size reaches a certain specification, so that the straw is required to be subjected to pretreatment such as cutting, crushing and the like before development and utilization. At present, the straw chopping equipment in the prior art mainly has several forms, such as a chopping type, a hammer type, a kneading type and the like, but has the problems of poor chopping effect and low production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be used for among the prior art straw to cut up equipment to have the technical problem that the effect is not good, production efficiency is low of cutting up.
In order to solve the problem, the utility model provides a straw cuts off breaker, include:
a frame and a first housing connected to the frame,
the feeding mechanism is connected with the rack and is used for feeding and conveying materials;
the cutting mechanism is connected with the rack and the feeding mechanism and used for cutting materials, the cutting mechanism comprises a first cutting structure and a second cutting structure, the first cutting structure is connected with the feeding mechanism and the rack, and the second cutting structure is arranged inside the first shell;
crushed aggregates mechanism for crushed aggregates, just crushed aggregates mechanism includes first crushed aggregates structure and second crushed aggregates structure, first crushed aggregates structure with second crushed aggregates structure is connected, first crushed aggregates structure with second crushed aggregates structure all set up in the inside of first casing, just second crushed aggregates structure set up in on the inner wall of first casing.
Optionally, the straw cutting and crushing device further comprises a second shell connected with the frame, a feed inlet is formed in the upper portion of the second shell, and the feeding mechanism is arranged inside the second shell.
Optionally, the feeding mechanism comprises a first conveying structure, a first conveying roller, a second conveying roller and a third conveying roller, wherein the first conveying roller is arranged above the first conveying structure, and the second conveying roller is arranged behind the first conveying roller and above the third conveying roller.
Optionally, the feeding mechanism further comprises a telescopic structure connected with the second shell, and the telescopic structure is connected with the second conveying rollers, so that the second conveying rollers can move along the telescopic direction of the telescopic structure.
Optionally, the outer portion of the second conveying roller is provided with a first toothed protruding portion in a surrounding manner, the outer portion of the third conveying roller is provided with a second toothed protruding portion in a surrounding manner, and the first toothed protruding portion and the second toothed protruding portion are arranged in a staggered manner.
Optionally, the first conveying structure comprises a motor assembly, guide wheels and a conveying chain, the guide wheels are in driving connection with the motor assembly, the conveying chain surrounds the two guide wheels, and the conveying chain is suitable for moving along with the rotation of the guide wheels so as to realize material conveying.
Optionally, first cutting structure includes stationary knife, fixed plate and connecting plate, the connecting plate with the frame is connected, and set up in the stationary knife with between the third transfer roller, the fixed plate with the frame is connected, the stationary knife is installed on the fixed plate and be located the rear of third transfer roller, just the cutting edge of stationary knife with third transfer roller parallel arrangement.
Optionally, a rotating shaft assembly is further arranged in the first shell, the rotating shaft assembly comprises a rotating shaft, fixed disks and pin shafts, the fixed disks are rotatably connected with the rotating shaft, the pin shafts are connected between every two adjacent fixed disks, the second material cutting structure is connected with the fixed disks through the pin shafts, and the crushed material structure is connected with the fixed disks through the pin shafts.
Optionally, the pin shaft comprises a first pin shaft and a second pin shaft, the first pin shaft is arranged on the left side of the second pin shaft, the second cutting structure comprises a movable cutter frame rotationally connected with the first pin shaft and a movable cutter arranged on the movable cutter frame, and the second cutting structure is obliquely connected to the first pin shaft; the crushing mechanism comprises a flail knife component which is rotationally connected with the second pin shaft.
Optionally, the right-hand discharge gate that sets up of first casing, second crushed aggregates structure includes the deflector, set up a plurality of guide ways on the deflector, just the notch orientation of guide way the direction of discharge gate extends the setting.
Straw cuts off breaker lies in for prior art's advantage, the utility model discloses a blank mechanism will be cut off, broken knot by the straw of feed mechanism conveying fully, and rethread blank mechanism further cuts off, breakage, and it is effectual to cut up, and production efficiency is high, and simple structure is compact, low cost.
Drawings
FIG. 1 is a schematic structural view of a straw cutting and crushing device in an embodiment of the present invention;
FIG. 2 is a schematic view showing a part of the structure of a straw cutting and crushing device in an embodiment of the present invention;
FIG. 3 is a schematic view of a second partial structure of the straw cutting and crushing device in the embodiment of the present invention;
FIG. 4 is a third schematic view of a partial structure of the straw cutting and crushing device in the embodiment of the present invention;
fig. 5 is an internal cross-sectional view of a second transfer roller in an embodiment of the invention.
Description of reference numerals:
1-a machine frame, 2-a fixed cutter, 3-a fixed plate, 4-a connecting plate, 5-a conveying chain, 6-a guide groove, 7-a feed inlet, 8-a guide wheel, 9-a first conveying roller, 10-a first tooth-shaped bulge, 11-a second conveying roller, 12-a telescopic structure, 13-a third conveying roller, 14-a first shell, 15-a second shell, 16-a movable cutter, 17-a movable cutter holder, 18-a flail cutter component, 19-a guide plate, 20-a discharge port, 21-a rotating shaft, 22-a fixed plate, 23-a pin shaft and 24-a shaft sleeve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it should be understood that the forward direction of "X" in the drawings represents the right direction, the reverse direction of "X" represents the left direction, the forward direction of "Y" represents the upper direction, the reverse direction of "Y" represents the lower direction, the forward direction of "Z" represents the front direction, the reverse direction of "Z" represents the rear direction, and the directions or positional relationships indicated by the terms "X", "Y", "Z", etc. are based on the directions or positional relationships shown in the drawings of the specification, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. The description of the term "some specific embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1-5, the embodiment of the utility model provides a straw cuts off breaker, include:
a frame 1 and a first shell 14 connected with the frame 1, wherein the frame 1 is used for being placed on the ground;
the feeding mechanism is connected with the frame 1 and is used for feeding and conveying materials;
the cutting mechanism is used for cutting materials and is connected with the rack 1 and the feeding mechanism, the cutting mechanism comprises a first cutting structure and a second cutting structure, the first cutting structure is connected with the feeding mechanism and the rack 1, and the second cutting structure is arranged inside the first shell 14;
crushed aggregates mechanism for the crushed aggregates, and crushed aggregates mechanism includes first crushed aggregates structure and second crushed aggregates structure, and first crushed aggregates structure is connected with second blank structure, and first crushed aggregates structure and second crushed aggregates structure all set up in the inside of first casing 14, and second crushed aggregates structure sets up on the inner wall of first casing 14.
Therefore, the straw conveyed by the feeding mechanism is fully cut off and broken through the cutting mechanism, and then is further cut off and broken through the breaking mechanism, so that the straw chopping machine is good in chopping effect, high in production efficiency, simple and compact in structure and low in cost.
In some preferred embodiments, the first housing 14 comprises an upper housing and a lower housing which are detachably connected, and the second small material structures are symmetrically and uniformly arranged on the inner walls of the upper housing and the lower housing, so that the structure is simple and the appearance is attractive.
As shown in fig. 4, it is preferable that the discharge hole 20 is provided at the right side of the first casing 14, the second milling stock structure includes a guide plate 19, a plurality of guide grooves 6 are provided on the guide plate 19, and the notches of the guide grooves 6 are extended toward the direction of the discharge hole 20, that is, the guide grooves are obliquely provided with respect to the direction X in the drawing. The straw entering the crushing mechanism is repeatedly cut and kneaded between the first crushed material structure and the second crushed material structure, the straw sections are changed into fine and soft filament-shaped straw filaments, and the fine and soft filament-shaped straw filaments are gradually discharged from the discharge port 20, so that the high efficiency and the continuity of production are ensured.
In some preferred embodiments, the straw cutting and crushing device further comprises a second shell 15 connected with the frame 1, the upper part of the second shell 15 is provided with the feeding hole 7, and the feeding mechanism is arranged inside the second shell 15. The straws fed from the feeding hole 7 smoothly enter the feeding mechanism, and the continuity is good.
Preferably, the feeding mechanism comprises a first conveying structure, a first conveying roller 9, a second conveying roller 11 and a third conveying roller 13, the first conveying roller 9 is arranged above the first conveying structure, and the second conveying roller 11 is arranged behind the first conveying roller 9 and above the third conveying roller 13. The entering straws are conveyed to the first conveying roller 9 by the first conveying structure, then enter between the second conveying roller 11 and the third conveying roller 13, are compacted and are brought into the cutting mechanism in sequence, the production continuity is good, and the cutting and crushing of the next step are facilitated.
In some preferred embodiments, the first conveying roller 9 is a cylindrical smooth roller structure with a central core in the middle, the central core is connected with the first motor through a conveying shaft, and in the rotating process, the distance between the central axes of the conveying shaft and the central core is unchanged, so that the central core can rotate freely around the conveying shaft, the rotating included angle is not greater than 45 degrees, and the rotating included angle is larger along with the increase of the feeding amount of the straws, so as to adapt to the straws with different feeding amounts, and the universality is strong.
As shown in fig. 5, preferably, the outer portion of the second conveying roller 11 is provided with a first tooth-shaped protrusion 10, the outer portion of the third conveying roller 13 is provided with a second tooth-shaped protrusion, and the first tooth-shaped protrusion 10 and the second tooth-shaped protrusion are identical in structure and are staggered. In some specific embodiments, the first tooth-shaped protruding portions 10 and the second tooth-shaped protruding portions are respectively and uniformly arranged outside the second conveying roller 11 and the third conveying roller 13, so that straw entering between the second conveying roller 11 and the third conveying roller 13 is forcedly compacted and brought into the cutting mechanism, and the cutting and crushing of the next step are facilitated.
Preferably, the feeding mechanism further comprises a telescopic structure 12 connected with the second housing 15, and the telescopic structure 12 is connected with the second conveying roller 11, so that the second conveying roller 11 can move along the telescopic direction of the telescopic structure 12. In some specific embodiments, the telescopic structure 12 is a compression spring and is vertically connected inside the second housing 15, so that the second conveying roller 11 can float up and down, when the straw enters between the second conveying roller 11 and the third conveying roller 13, under the action of the compression spring, the second conveying roller 11 moves towards the direction close to the third conveying roller 13 to extrude the straw, so that the straw is compacted, and the straw cutting and crushing in the next step are facilitated.
Preferably, the first conveying structure comprises a motor assembly, guide wheels 8 and a conveying chain 5, wherein the guide wheels 8 are rotatably connected with the motor assembly, the conveying chain 5 is arranged around the two guide wheels 8, and the conveying chain 5 can move under the action of the guide wheels 8 and is suitable for conveying straws. In some specific embodiments, the conveying chain 5 can move the straw from the feeding end to the first conveying roller 9 under the action of the guide wheel 8, the conveying effect is good, and the structure is simple.
Preferably, first cutting structure includes stationary knife 2, fixed plate 3 and connecting plate 4, and connecting plate 4 is connected with frame 1 and sets up between stationary knife 2 and third transfer roller 13, and fixed plate 3 is connected with frame 1, and stationary knife 2 installs on fixed plate 3 and is located the rear of third transfer roller 13. In some preferred embodiments, the fixed knife 2 is vertically fixed on the fixing plate 3, and is adjustable along the height direction of the fixing plate 3 of the fixed knife 2, that is, the height of the fixed knife 2 is adjustable, it should be noted that the height direction in this embodiment is the direction Y in the drawing.
In this embodiment, the height of the fixed knife 2 is adjustable, and may be the height of the fixed knife 2 relative to the fixing plate 3, or may be the height of the fixing plate 3 relative to the frame 1, so that the height of the fixed knife 2 is indirectly adjustable. In some specific embodiments, the fixed blade 2 is screwed to the fixing plate 3, and a plurality of screw holes are formed in the fixing plate 3 along the height direction, and the screw holes can be selected from the fixing plate 3 for connection according to the required height of the fixed blade 2; in other specific embodiments, the fixed knife 2 is fixedly connected with the fixed plate 3, but the fixed plate 3 is adjustable in height relative to the rack 1, namely, the fixed plate 3 is in screwed connection with the rack 1, and the rack 1 is provided with a plurality of screw holes along the height direction, according to the height required by the fixed knife 2, the screw holes can be selected on the rack 1 to be connected with the fixed plate 3, so that the height of the fixed plate 3 can be adjusted, namely, the height of the fixed knife 2 can be adjusted, when the straw feeding amount is large, the height of the fixed knife 2 can be increased, when the straw feeding amount is small, the height of the fixed knife 2 can be reduced, namely, the height of the fixed knife 2 can be adjusted according to the feeding amount of the straw, and the universality is strong.
Preferably, the cutting edge of the fixed knife 2 is arranged in parallel with the third conveying roller 13, so that the straws directly enter under the cutting edge of the fixed knife 2 after coming out from between the second conveying roller 11 and the third conveying roller 13, the straws are cut off for the first time, and the production continuity is high.
As shown in fig. 3, preferably, a rotating shaft assembly is further disposed in the first housing 14, the rotating shaft assembly includes a rotating shaft 21, fixed discs 22 rotatably connected to the rotating shaft 21, and a pin 23 connected between two adjacent fixed discs 22, and the second cutting structure and the crushing structure are respectively connected to the rotating shaft assembly through the pin 23.
In some specific embodiments, the pin 23 includes a first pin and a second pin, the first pin is disposed at the left of the second pin, a shaft sleeve 24 is sleeved outside each pin 23, the second material cutting structure is rotatably connected with the shaft sleeve 24 of the first pin, and the crushing mechanism is rotatably connected with the shaft sleeve 24 of the second pin, so that the second material cutting structure can rotate around the first pin as an axis, the crushing mechanism can rotate around the second pin as an axis, the cutting and crushing force is large, and the crushing effect is good.
In some preferred embodiments, the second cutting structure includes a movable knife holder 17 rotatably connected to the first pin shaft and a movable knife 16 mounted on the movable knife holder 17, in this embodiment, the number of the movable knife 16 is not limited, in some preferred embodiments, the number of the movable knife 16 is 4, correspondingly, the number of the movable knife holder 17 is 4, the number of the first pin shafts is also 4, and each pin shaft 23 is uniformly arranged around the outside of the rotating shaft 21 through two fixed discs 22. The cutting efficiency is high.
Preferably, the second material cutting structure is obliquely connected to the first pin shaft, so that the blade direction of the movable blade 16 and the blade direction of the fixed blade 2 are in a crossed state when the straw is cut, but a gap is formed between the movable blade 16 and the fixed blade 2. Namely, when cutting the straw, the movable knife 16 does not cut the whole straw simultaneously, but falls down from one end first and cuts the straw in a slant line, so that the resistance is reduced, and the power consumption is reduced.
Preferably, the crushing mechanism includes flail knife assemblies 18 rotatably connected to the second pins, in this embodiment, the number of the flail knife assemblies 18 is not limited, in some preferred embodiments, the number of the flail knife assemblies 18 is 4, and correspondingly, the number of the second pins is also 4, and each pin 23 is uniformly arranged around the outer portion of the rotating shaft 21 through two fixing discs 22. The structure is simple.
In this embodiment, each flail knife assembly 18 includes a plurality of flail knives, and the plurality of flail knives are uniformly rotatably connected to each second pin shaft, the number of the flail knives is not limited in this embodiment, and in some specific embodiments, the number of the flail knives is 10, so that the kneading and crushing effect is good, and the cost is low.
The working principle of the straw cutting and crushing device in the embodiment is as follows: when the straw cutting and crushing device works, straws enter the feeding mechanism through the feeding hole 7, are conveyed by the conveying chain 5 and enter the lower part of the first conveying roller 9, the first conveying roller 9 can float up and down according to different thicknesses of material layers, are primarily compressed by the first conveying roller 9, are forcibly compacted and guided in by the second conveying roller 11 and the third conveying roller 13, are conveyed to the cutting edge of the fixed knife 2 through the lap joint of the connecting plate 4, are cut off under the chopping and hammering of the high-speed rotating moving knife 16, are broken and are rapidly brought into the kneading area, are repeatedly cut and kneaded between the guide plate 19 and the staggered flail knife assemblies 18, are changed into fine and soft silk-shaped straw filaments, and are gradually discharged from the discharge hole 20 under the driving of the flail knife assemblies 18 and the guiding direction of the guide groove 6, so that the whole process of cutting and crushing of the straws is completed, and the high efficiency and the continuity of production are ensured.
Therefore, the straw cutting and crushing device of the embodiment can fully cut and crush the straws conveyed by the feeding mechanism through the cutting mechanism, and further cut and crush the straws through the crushing mechanism, and has the advantages of good cutting effect, high production efficiency, simple and compact structure and low cost.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. A straw cutting and crushing device is characterized by comprising:
a frame (1) and a first shell (14) connected with the frame (1),
the feeding mechanism is connected with the rack (1) and is used for feeding and conveying materials;
the cutting mechanism is connected with the rack (1) and the feeding mechanism and used for cutting materials, the cutting mechanism comprises a first cutting structure and a second cutting structure, the first cutting structure is connected with the feeding mechanism and the rack (1), and the second cutting structure is arranged inside the first shell (14);
crushed aggregates mechanism for crushed aggregates, just crushed aggregates mechanism includes first crushed aggregates structure and second crushed aggregates structure, first crushed aggregates structure with second crushed aggregates structure is connected, first crushed aggregates structure with second crushed aggregates structure all set up in the inside of first casing (14), just second crushed aggregates structure set up in on the inner wall of first casing (14).
2. The straw cutting and crushing device according to claim 1, further comprising a second shell (15) connected with the frame (1), wherein a feeding hole (7) is formed in the upper portion of the second shell (15), and the feeding mechanism is arranged inside the second shell (15).
3. The straw cutting and crushing device according to claim 2, wherein the feeding mechanism comprises a first conveying structure, a first conveying roller (9), a second conveying roller (11) and a third conveying roller (13), the first conveying roller (9) is arranged above the first conveying structure, and the second conveying roller (11) is arranged behind the first conveying roller (9) and above the third conveying roller (13).
4. The straw cutting and crushing device according to claim 3, characterized in that the feeding mechanism further comprises a telescopic structure (12) connected with the second housing (15), and the telescopic structure (12) is connected with the second conveying roller (11) so that the second conveying roller (11) can move along the telescopic direction of the telescopic structure (12).
5. The straw cutting and crushing device according to claim 3, characterized in that a first toothed protruding part (10) is arranged around the outer part of the second conveying roller (11), a second toothed protruding part is arranged around the outer part of the third conveying roller (13), and the first toothed protruding part (10) and the second toothed protruding part are arranged in a staggered mode.
6. The straw cutting and crushing device according to claim 3, wherein the first conveying structure comprises a motor assembly, a guide wheel (8) and a conveying chain (5), the guide wheel (8) is in driving connection with the motor assembly, the conveying chain (5) is arranged around the two guide wheels (8), and the conveying chain (5) is suitable for moving along with the rotation of the guide wheels (8) to realize material conveying.
7. The straw cutting and crushing device according to claim 3, wherein the first cutting structure comprises a fixed knife (2), a fixed plate (3) and a connecting plate (4), the connecting plate (4) is connected with the rack (1) and arranged between the fixed knife (2) and the third conveying roller (13), the fixed plate (3) is connected with the rack (1), the fixed knife (2) is installed on the fixed plate (3) and located behind the third conveying roller (13), and the cutting edge of the fixed knife (2) is arranged in parallel with the third conveying roller (13).
8. The straw cutting and crushing device according to claim 1, wherein a rotating shaft assembly is further arranged in the first shell (14), the rotating shaft assembly comprises a rotating shaft (21), fixed disks (22) rotatably connected with the rotating shaft (21), and a pin shaft (23) connected between every two adjacent fixed disks (22), the second cutting structure is connected with the fixed disks (22) through the pin shafts (23), and the crushed aggregates are connected with the fixed disks (22) through the pin shafts (23).
9. The straw cutting and crushing device according to claim 8, wherein the pin shaft (23) comprises a first pin shaft and a second pin shaft, the first pin shaft is arranged on the left side of the second pin shaft, the second cutting structure comprises a movable knife rest (17) rotatably connected with the first pin shaft and a movable knife (16) arranged on the movable knife rest (17), and the second cutting structure is obliquely connected to the first pin shaft; the crushing mechanism comprises a flail knife component (18) which is rotatably connected with the second pin shaft.
10. The straw cutting and crushing device according to claim 1, wherein a discharge opening (20) is arranged at the right side of the first casing (14), the second crushing structure comprises a guide plate (19), a plurality of guide grooves (6) are arranged on the guide plate (19), and the notches of the guide grooves (6) extend towards the discharge opening (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020729061.2U CN212232235U (en) | 2020-05-07 | 2020-05-07 | Straw cuts off breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020729061.2U CN212232235U (en) | 2020-05-07 | 2020-05-07 | Straw cuts off breaker |
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| CN212232235U true CN212232235U (en) | 2020-12-29 |
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| CN202020729061.2U Active CN212232235U (en) | 2020-05-07 | 2020-05-07 | Straw cuts off breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113228941A (en) * | 2021-03-29 | 2021-08-10 | 黑龙江省农业机械工程科学研究院齐齐哈尔农业机械化研究所 | Clamping and feeding device of straw shredding machine |
-
2020
- 2020-05-07 CN CN202020729061.2U patent/CN212232235U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113228941A (en) * | 2021-03-29 | 2021-08-10 | 黑龙江省农业机械工程科学研究院齐齐哈尔农业机械化研究所 | Clamping and feeding device of straw shredding machine |
| CN113228941B (en) * | 2021-03-29 | 2022-07-15 | 黑龙江省农业机械工程科学研究院齐齐哈尔农业机械化研究所 | Clamping and feeding device of straw filament cutting machine |
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