CN211897176U - Bidirectional ramie decorticator - Google Patents

Abstract

The utility model discloses a two-way decorticator of ramie, including frame and rack-mounted preceding decorticator and back decorticator, preceding decorticator includes preceding ramie centre gripping conveyor and preceding decorticator structure, preceding ramie centre gripping conveyor includes relative setting from top to bottom and carries the preceding centre gripping conveying chain of ramie with the centre gripping, back decorticator includes back ramie centre gripping conveyor and back decorticator structure, back ramie centre gripping conveyor includes relative setting from top to bottom and carries the back centre gripping conveying chain of ramie with the centre gripping, back decorticator structure sets up the one side of back centre gripping conveying chain, back centre gripping conveying chain and preceding decorticator structure all set up in the same one side of centre gripping conveying chain in the front, the output of preceding centre gripping conveying chain sets up with the input of back centre gripping conveying chain is crisscross. The utility model discloses a two-way ramie decorticator of ramie can realize two-way ramie decorticating of ramie stem stalk through two ramie decorticator of crisscross setting in front and back, can shell the ramie with the part that ramie stem stalk centre gripping was carried and handle.

Description

Bidirectional ramie decorticator

Technical Field

The utility model belongs to the technical field of ramie processing, specifically be a two-way ramie decorticator of ramie.

Background

Ramie is a special product in China called Chinese grass, and the planting area and the yield of the ramie in China currently account for more than 90 percent of the world. The ramie fiber has the characteristics of good flexibility, large fiber strength, stiff and smooth fabric, good luster, quick moisture absorption and dispersion and the like, is a typical natural plant fiber raw material, and the textile is popular with domestic and foreign consumers.

From the last 90 s to the present, small ramie decorticating machines are continuously developed in China, and the demand of partial individual farmers for ramie decorticating and processing is met. The existing small-sized ramie decorticator is mainly divided into a reverse pull type full-feed type decorticator and a full-feed type decorticator. The reverse pulling type decorticating machine mainly depends on manual pulling and splitting to sequentially decorticate the two ends, so that the labor intensity is high, the working efficiency is low, and potential safety hazards exist; the existing full-feeding type ramie decorticating machine is mainly a longitudinal feeding type ramie decorticating machine, the machine type is influenced by the length of ramie stalks and the rotating speed of a roller, the ramie decorticating efficiency is not high, and the problem that ramie tail ramie bones and green husks cannot be completely decorticated exists.

Chinese patent 201811467304.3 discloses a ramie decorticating device, which realizes automation of decorticating process and basically solves the above problems, but still has the following problems to be improved and optimized:

1. the ramie peeling mechanism can only realize unidirectional ramie peeling, namely, the ramie on two sides clamped by the upper and lower clamping conveying chains cannot be peeled by the ramie peeling plate. Therefore, either workers are required to manually decorticate, and the overall decorticating efficiency is reduced; or the clamping section is directly cut off, so that the ramie peeling efficiency is reduced, and the utilization rate of ramie is reduced, thereby causing waste;

2. a ramie peeling roller of the ramie peeling mechanism is arranged on one side of the upper clamping conveying chain and the lower clamping conveying chain, and a supporting seat of the ramie peeling roller is easy to interfere with a ramie rod, so that ramie cannot accurately enter the ramie peeling mechanism;

3. although the ramie peeling concave plate below the ramie peeling roller can be adjusted up and down, the ramie peeling concave plate can not float in the ramie peeling process, so that the ramie peeling plate is easy to break ramie fibers;

4. the adjacent elastic pressing blocks and the concave clamping plates are not in seamless connection on the clamping and conveying chain for clamping and conveying the ramie, so that after the ramie stalks or fibers are squeezed into gaps between the elastic pressing blocks and between the concave clamping plates, the ramie stalks or fibers are directly pulled out by the ramie stripping plates due to small clamping force;

5. the upper and lower clamping conveying chains for clamping and conveying ramie are driven by two different chain wheel driving motors, so that the synchronization is difficult to ensure, and the relative motion of the upper and lower clamping conveying chains is caused;

6. the upper and lower pressing structures for the upper and lower clamping conveying chains are pressed by the chain wheels and the springs, so that the noise is high, and the pressing force of each part is difficult to adjust to be consistent.

In summary, how to further optimize the ramie holding and conveying device and the ramie peeling mechanism of the ramie peeling machine has become a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-way ramie decorticator to solve above-mentioned problem.

In order to realize the above purpose, the utility model discloses a two-way decorticator of ramie, including frame and rack-mounted preceding decorticator and back decorticator, preceding decorticator includes preceding ramie centre gripping conveyor and preceding decorticator structure, preceding ramie centre gripping conveyor includes relative setting from top to bottom and carries the preceding centre gripping conveying chain of ramie with the centre gripping, and back decorticator includes back ramie centre gripping conveyor and back decorticator structure, back ramie centre gripping conveyor includes relative setting from top to bottom and carries the back centre gripping conveying chain of ramie with the centre gripping, back decorticator structure sets up one side of back centre gripping conveying chain, back centre gripping conveying chain and preceding decorticator structure all set up same one side of preceding centre gripping conveying chain, the crisscross setting of output of preceding centre gripping conveying chain and the input of back centre gripping conveying chain, just be provided with the ramie fibre after decorticator structure decorticator of the ramie after decorticator structure decorticator of will be provided with between the input of preceding centre gripping conveying chain and the back centre gripping conveying chain And the ramie transition mechanism is used for maintaining the ramie transition to one side of the rear clamping conveying chain, and the rear ramie peeling mechanism is arranged at the other side of the rear clamping conveying chain.

Further, preceding decorticating mechanism is in including preceding decorticating cylinder and clearance setting before decorticating the preceding concave board of decorticating of cylinder downside, back decorticating mechanism is in including back decorticating cylinder and clearance setting after decorticating the back concave board of decorticating of cylinder downside, ramie transition mechanism includes many transition rods, the one end of transition rod with the output of preceding decorticating the concave board of hemp is connected, the other end to the input of back centre gripping conveying chain extends.

Furthermore, a rear ramie output protective cover for supporting ramie fibers is arranged on one side of the rear clamping conveying chain, the upper side of the rear ramie output protective cover is positioned on the lower side of the clamping position of the rear clamping conveying chain, one end of the transition rod is connected with the output end of the front ramie stripping concave plate, and the other end of the transition rod is connected with the rear ramie output protective cover.

And the fan is arranged on the rack, an air outlet of the fan faces the transition rod, and the fan supplies air from one side of the front clamping conveying chain to one side of the rear clamping conveying chain.

Furthermore, the front hemp peeling roller and the rear hemp peeling roller are circumferentially provided with hemp peeling plates, the lower sides of the front hemp peeling concave plate and the rear hemp peeling concave plate are provided with automatic telescopic parts for adjusting the clearance between the front hemp peeling concave plate and the rear hemp peeling concave plate, and the driving ends of the automatic telescopic parts are connected with the hemp peeling concave plates.

Furthermore, the automatic telescopic part is a hydraulic or pneumatic supporting cylinder, the cylinder body of the hydraulic or pneumatic supporting cylinder is arranged on the frame, and the piston rod of the hydraulic or pneumatic supporting cylinder is connected with the front hemp peeling concave plate and the rear hemp peeling concave plate.

Furthermore, an elastic pressing block is installed on the front clamping conveying chain on one side of the front ramie peeling device, a concave clamping plate capable of being meshed with the elastic pressing block is installed on the front clamping conveying chain on the other side of the front ramie peeling device, an elastic pressing block is installed on the rear clamping conveying chain on one side of the rear ramie peeling device, a concave clamping plate capable of being meshed with the elastic pressing block is installed on the rear clamping conveying chain on the other side of the rear ramie peeling device, and the head end and the tail end of the adjacent elastic pressing block and the head end and the tail end of the adjacent concave clamping plate are all in seamless meshing in the conveying direction of ramie.

Furthermore, the elastic pressing blocks are arranged on the chain links of the clamping conveying chain and the rear clamping conveying chain, one end of each elastic pressing block is provided with a convex block, the other end of each elastic pressing block is provided with a groove, the grooves adjacent to the elastic pressing blocks are meshed with the convex blocks, each concave clamping plate comprises a bottom plate and vertical plates arranged on two sides of the bottom plate, and the vertical plates adjacent to the concave clamping plates are arranged in a staggered mode.

Furthermore, the elastic pressing block is arranged on chain links of the front clamping conveying chain on the upper side and the rear clamping conveying chain on the upper side, the concave clamping plate is arranged on chain links of the front clamping conveying chain on the lower side and the rear clamping conveying chain on the lower side, the elastic pressing block is a rubber pressing block, the concave clamping plate is a hard metal clamping plate, the ends of the elastic pressing block, which are meshed with the concave clamping plate, are in arc transition, and the upper end of an upper vertical plate of the concave clamping plate is outwards bent in an arc shape.

Further, still include straining device and straining device down, it is including compressing tightly hydraulic pressure/pneumatic cylinder, U type frame and tensioning roller to go up straining device, compress tightly the piston rod of hydraulic pressure/pneumatic cylinder with U type framves are connected, the tensioning roller is installed on the U type frame and support and lean on the upside preceding centre gripping conveying chain and back centre gripping conveying chain on, straining device includes the backup pad that can adjust from top to bottom down, the backup pad supports and leans on preceding centre gripping conveying chain and back centre gripping conveying chain of downside, it is connected with and compresses tightly the air-vent valve to compress tightly hydraulic pressure/pneumatic cylinder.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a two-way ramie decorticator of ramie is through two ramie decorticator devices of crisscross setting around, can realize the two-way ramie of ramie stem stalk, can shell the ramie with the part that ramie stem stalk centre gripping was carried and handle to improve the utilization ratio of ramie stem stalk, also improved and led the fibrous ramie efficiency of shelling of ramie from the ramie stem stalk.

Then, the utility model arranges the hydraulic/pneumatic supporting cylinder at the lower side of the ramie peeling concave plate, thereby being convenient for adjusting the ramie peeling gap on line, ensuring constant pressure ramie peeling between the ramie peeling plate and the ramie peeling concave plate, and preventing the ramie peeling plate from cutting off ramie fibers or pulling the ramie out from the clamping conveying chain or being worn by a distance; furthermore, the head and the tail ends of the elastic pressing blocks and the head and the tail ends of the adjacent concave clamping plates are in seamless engagement in the conveying direction of the ramie, so that ramie stalks or fibers are squeezed into gaps between the adjacent elastic pressing blocks or the adjacent concave clamping plates in the conveying direction of the ramie, and the problem that the ramie stalks or fibers are directly pulled out by peeling the ramie plates is solved; meanwhile, automatic control of pressing can be realized through a pressing hydraulic pressure/pneumatic cylinder, the problem that huge noise is brought by the adoption of a pressing chain wheel and a spring in the prior art is solved, and more importantly, compared with the condition that the pressing force of a plurality of pressing chain wheels is difficult to guarantee through manual adjustment of the spring, constant-pressure floating control of a tensioning roller can be realized through a pressing pressure regulating valve, so that the pressing force acting on the ramie is guaranteed to be constant; the problem that the ramie cannot enter the ramie peeling mechanism due to the fact that the ramie upwarps can be solved through the ramie guide rod.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic front view of a two-way ramie decorticator according to a preferred embodiment of the present invention;

FIG. 2 is a schematic top view of a two-way ramie decorticator according to a preferred embodiment of the present invention;

FIG. 3 is a schematic axial view of the two-way ramie decorticator according to the preferred embodiment of the present invention;

FIG. 4 is a first axial schematic view of a front decorticating device of the bidirectional decorticating machine for ramie according to the preferred embodiment of the present invention;

FIG. 5 is a second axial view of the front decorticating device of the bidirectional decorticating machine according to the preferred embodiment of the present invention;

FIG. 6 is a schematic front view of a front ramie peeling device of the bidirectional ramie peeling machine disclosed in the preferred embodiment of the present invention;

FIG. 7 is a schematic rear view of a front ramie peeling device of the bidirectional ramie peeling machine disclosed in the preferred embodiment of the present invention;

FIG. 8 is a schematic left side view of a front ramie peeling device of the bidirectional ramie peeling machine according to the preferred embodiment of the present invention;

FIG. 9 is a schematic top view (90 degrees counterclockwise rotation) of the front decorticating device of the bidirectional decorticating machine for ramie according to the preferred embodiment of the present invention;

fig. 10 is a schematic structural view of a ramie holding and conveying device of a bidirectional ramie decorticator according to a preferred embodiment of the present invention;

fig. 11 is a schematic view of the engagement between the upper holding conveyer chain and the lower holding conveyer chain of the ramie holding conveyer according to the preferred embodiment of the present invention.

Illustration of the drawings:

1. a frame;

2. a front decorticating device;

21. a front ramie clamping and conveying device; 210. a front clamping conveyor chain; 211. an upper clamping conveying chain; 212. a lower clamping conveyor chain; 213. a sprocket; 214. an upper tensioning mechanism; 215. a lower tensioning mechanism; 216. a compression hydraulic/pneumatic cylinder; 217. a U-shaped frame; 218. a tension roller; 219. a chain link; 220. a screw rod; 221. chain tensioning hydraulic/pneumatic cylinders; 222. a ramie guide rod; 226. a chain plate; 227. a chain plate guide groove; 228. a chain plate guide convex ring; 229. a chain wheel supporting seat; 230. a chain tensioning mechanism; 231. a wing plate; 232. a sprocket drive motor; 233. a support plate; 25. a front decorticating mechanism; 251. a front decorticating roller; 252. front decorticating the concave plate; 253. peeling a hemp board; 254. a cantilever support frame; 255. a channel; 256. an automatic telescopic member; 257. elastic pressing blocks; 258. a concave clamping plate; 259. a bump; 260. a groove; 261. a base plate; 262. a vertical plate; 263. lightening holes; 264. a decorticating roller driving motor;

23. a front flax-emergence protective cover;

24. a feed conveyor belt;

3. a post-decorticating device;

31. a post ramie holding and conveying device; 310. a rear clamping conveyor chain;

35. a post-decorticating mechanism; 351. a back decorticating roller; 352. peeling the hemp concave plate;

33. then a ramie shield is produced;

34. a discharge conveyer belt;

4. a ramie transition mechanism; 41. a transition rod;

5. a fan.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1-3, the utility model discloses a bidirectional ramie decorticator, which comprises a frame 1, a front ramie decorticating device 2 and a rear ramie decorticating device 3 mounted on the frame 1, wherein the input end of the front ramie decorticating device 2 is provided with a feeding conveyer belt 24, the output end of the rear ramie decorticating device 3 is provided with a discharging conveyer belt 34, the front ramie decorticating device 2 comprises a front ramie holding conveyer 21 and a front ramie decorticating mechanism 25, the front ramie holding conveyer 21 comprises a front holding conveyer chain 210 arranged oppositely up and down for holding and conveying ramie, the front ramie decorticating mechanism 25 comprises a front ramie cylinder 251 and a front ramie concave plate 251 arranged on the lower side of the front ramie cylinder in clearance, the rear ramie decorticating device 3 comprises a rear ramie holding conveyer 31 and a rear ramie decorticating mechanism 35, the rear ramie holding conveyer 31 comprises a rear holding conveyer chain 310 arranged oppositely up and down for holding and conveying ramie, the rear ramie decorticating mechanism 35 comprises a rear ramie cylinder 351 and a rear ramie concave plate 352 arranged on the lower side of, the output end of the front clamping and conveying chain 210 extends towards the input end of the rear clamping and conveying chain 310, so as to form a parallel staggered position relation, when ramie is not output from the output end of the front clamping and conveying chain 210, ramie fibers subjected to ramie peeling treatment can enter the rear clamping and conveying chain 310 to be clamped, the rear clamping and conveying chain 310 and the front ramie peeling mechanism 25 are both arranged on the same side of the front clamping and conveying chain 210, the output end of the front ramie peeling concave plate 252 is provided with a ramie transition mechanism 4 for enabling the ramie fibers subjected to ramie peeling to transition towards the rear clamping and conveying chain 310, a transition surface is formed on the ramie transition mechanism 4, the front ramie peeling device 2 and the rear ramie peeling device 3 are basically the same, specifically, the front ramie clamping and conveying device 21 and the rear ramie clamping and conveying device 31, the front ramie peeling mechanism 25 and the rear ramie peeling mechanism 35 are basically the same, only the front ramie clamping and conveying device 21 and the rear ramie clamping and conveying device 31 are arranged on two sides which are parallel to, the front ramie peeling mechanism 25 and the rear ramie peeling mechanism 35 are also arranged on two sides of the frame 1, so that bidirectional ramie peeling of ramie is realized, and direct drooping of ramie fibers and winding of the rear clamping conveying chain 310 are avoided through the supporting and spreading functions of the ramie transition mechanism 4.

In this embodiment, specifically, the ramie transition mechanism 4 includes a plurality of transition rods 41 arranged in sequence from bottom to top, one end of the transition rod 41 is connected to the output end of the front ramie peeling concave plate 252, and the other end extends toward the input end of the rear holding conveyor chain 310, so that ramie fibers peeled off can smoothly transition from the transition rod 41 to the rear holding conveyor chain 310.

In this embodiment, one side of the back clamping conveying chain 310 located at the lower side is provided with a back ramie-discharging protective cover 33 for isolating or supporting ramie fibers, the upper side of the back ramie-discharging protective cover 33 is located at the lower side of the conveying surface of the back clamping conveying chain 310, one end of the transition rod 41 is connected, the other end of the transition rod is connected with the back ramie-discharging protective cover 33, and when subsequently peeling ramie on the back ramie-peeling device 3 to the clamping section of the front ramie-peeling device 2, the completed ramie-peeling fibers can be isolated through the back ramie-discharging protective cover 33, thereby preventing winding.

In order to ensure that the ramie fibers after the ramie peeling of the front ramie peeling device 2 is completed can be better transited to the transition rod 41 and prevented from being blocked, the front ramie peeling device 2 is further provided with the fan 5, the air outlet of the fan 5 is arranged towards the transition rod 41, concretely, the blowing direction of the fan 5 is one side of the front clamping conveying chain 210 and the other side of the rear clamping conveying chain 310, the ramie fibers can be blown to the horizontal as far as possible through the fan 5, and in the transition, on the other hand, the attached green husks and the like on the ramie fibers can be blown off.

Specifically, in the embodiment, as shown in fig. 4-11, the front holding conveyor chain 210 includes an upper holding conveyor chain 211 and a lower holding conveyor chain 212, each holding conveyor chain is engaged with a sprocket 213, one end of ramie to be decorticated is held by the upper holding conveyor chain 211 and the lower holding conveyor chain 212, the front decorticating mechanism 25 includes a front decorticating roller 251 and an arc-shaped front decorticating concave 252 disposed at the lower side of the front decorticating roller 251, the front decorticating roller 251 and the decorticating roller driving motor 264 adopt chain transmission, the front decorticating concave 252 is disposed at the lower side of the front decorticating roller 251 with a gap, the upper end of the front decorticating concave is close to the position where the upper holding conveyor chain 211 and the lower holding conveyor chain 212 abut against each other, one end of the front decorticating concave 252 extends to the position where the upper holding conveyor chain 211 and the lower holding conveyor chain 212 contact each other, the other end extends to the bottom of the front decorticating roller 251, a decortica, the ramie peeling plate 253 is one side of an angle steel structure, and both sides of the ramie peeling plate 253 are provided with arc angles, so that ramie can enter and output conveniently. In order to avoid the problem that the supporting seat of the front ramie peeling roller 251 is easily interfered with a ramie rod, a cantilever supporting frame 254 is arranged above the front ramie peeling concave plate 252 of the rack 1, the front ramie peeling roller 251 is arranged on the cantilever supporting frame 254 through the supporting seat, and because ramie can droop due to gravity and cannot interfere with the cantilever supporting frame 254 above, a channel 255 for the ramie to enter the front ramie peeling mechanism 25 without obstacles is formed, and smooth feeding is ensured.

In this embodiment, an automatic expansion member 256 for adjusting a gap between the concave front ramie peeling plate 253 and the concave front ramie peeling plate 252 is disposed on the lower side of the concave front ramie peeling plate 252, the automatic expansion member 256 is a hydraulic/pneumatic support cylinder, the hydraulic/pneumatic support cylinder is mounted on the frame 1, and a piston rod of the hydraulic/pneumatic support cylinder is connected to the concave front ramie peeling plate 252, so that the gap between the concave front ramie peeling plate 253 and the concave front ramie peeling plate 252 can be automatically and steplessly adjusted by the hydraulic/pneumatic support cylinder, thereby facilitating online real-time control of the quality of ramie fibers, and more importantly, the hydraulic/pneumatic support cylinder is connected to a support pressure regulating valve, so as to ensure that the pressing force between the concave front ramie peeling plate 253 and the concave front ramie peeling plate 252 (when ramie is present in the middle) is constant, and when the mutual acting force between the concave front ramie peeling plate 253 and the concave front ramie peeling plate 252 is increased due to a large amount of ramie or hard lumps and the, at this time, the pressure can be released by supporting the pressure regulating valve, and the front ramie peeling concave plate 252 can be driven to retreat, so that the ramie peeling plate 253 is prevented from cutting off ramie fibers or tearing off ramie from the clamping conveying chain or being worn by a distance.

In this embodiment, since the gap between the ramie peeling plate 253 and the front ramie peeling concave plate 252 is relatively small (thereby ensuring extrusion and peeling), the frame 1 is further provided with a ramie guide rod 222, the ramie guide rod 222 is disposed on the upper side of the passage 255, one end of the ramie guide rod 222 is fixedly connected to the frame 1, and the other end of the ramie guide rod 222 is inclined downward and extends toward the upper side of the input port of the front ramie peeling mechanism 25, so that when one end of the ramie clamping and conveying device 21 clamping the ramie rod moves toward the front ramie peeling roller 251, the ramie guide rod 222 continuously presses down the ramie rod, and finally the other end of the ramie rod is ensured to enter the gap between the ramie peeling plate 253 and the front ramie peeling concave plate 252 to start a ramie peeling operation, thereby avoiding a danger caused by manual pressing down when part of the ramie rod is lifted up, and improving the automation degree of conveying of the ramie rod.

In this embodiment, the upper clamping conveyor chain 211 of the frame 1 is provided with an elastic pressing block 257, the lower clamping conveyor chain 212 on the other side is provided with a concave clamping plate 258 capable of being engaged with the elastic pressing block 257, optionally, the elastic pressing block 257 may be provided on the lower clamping conveyor chain 212, and the concave clamping plate 258 is provided on the upper clamping conveyor chain 211. The head and the tail ends of the adjacent elastic pressing blocks 257 and the head and the tail ends of the adjacent concave clamping plates 258 are in seamless engagement in the conveying direction of the ramie, so that ramie stalks or fibers are extruded into gaps between the elastic pressing blocks 257 of the adjacent elastic pressing blocks 257 or the adjacent concave clamping plates 258 in the conveying direction of the ramie, and the problem that the ramie stalks or the fibers are directly pulled out by the ramie peeling plates 253 is solved. Specifically, the elastic pressing blocks 257 are mounted on the links 219 for clamping the conveying chain, that is, each link 219 is mounted with an elastic pressing block 257 (which is convenient for direct cutting and processing and avoids the problem of high cost caused by mold opening during injection molding), one end of the elastic pressing block 257 is provided with a projection 259, the other end of the elastic pressing block 257 is provided with a groove 260, the grooves 260 of adjacent elastic pressing blocks 257 are kept engaged with the projection 259, and thus, the gap between adjacent elastic pressing blocks 257 is compensated by the projection 259, and a structure similar to a seamless conveying belt is formed; the concave clamping plates 258 comprise bottom plates 261 and vertical plates 262 arranged on two sides of the bottom plates 261, the vertical plates 262 of adjacent concave clamping plates 258 are mutually staggered to form a conveying groove structure, and gaps between the adjacent vertical plates 262 are made up in a staggered mode.

In this embodiment, the elastic pressing block 257 is a rubber pressing block, the concave clamping plate 258 is a hard metal clamping plate, in order to avoid cutting the end of the ramie rod when the end of the ramie rod is pressed, the end of the elastic pressing block 257 engaged with the concave clamping plate 258 is in arc transition, and the upper end of the upper vertical plate 262 of the concave clamping plate 258 is bent outwards in arc shape.

In this embodiment, in order to ensure the clamping force between the upper clamping conveying chain 211 and the lower clamping conveying chain 212 and prevent the juma rod from being pulled out by the hemp stripping plate 253, the frame 1 is further provided with an upper tensioning mechanism 214 and a lower tensioning mechanism 215, the upper tensioning mechanism 214 comprises a pressing hydraulic/pneumatic cylinder 216, a U-shaped frame 217 and a tensioning roller 218, a piston rod of the pressing hydraulic/pneumatic cylinder 216 is connected with the U-shaped frame 217, the tensioning roller 218 is installed on the U-shaped frame 217 and abuts against the upper clamping conveying chain 211 on one side of the frame 1, the lower tensioning mechanism 215 comprises a support plate 233 which can be adjusted up and down, a screw 220 which is in threaded connection with the frame 1 is arranged below the specific support plate 233, the upper and lower positions of the supporting plate 233 are adjusted by rotating the screw rod 220, the supporting plate 233 abuts against the lower clamping conveying chain 212 on the other side of the frame 1, and the compressing hydraulic/pneumatic cylinder 216 is connected with a compressing pressure adjusting valve; similarly, on the one hand, the automatic control of the pressing can be realized by the pressing hydraulic/pneumatic cylinder 216, and the problem of huge noise caused by the conventional pressing chain wheels and springs is also avoided, and more importantly, compared with the situation that the pressing force of a plurality of pressing chain wheels is difficult to guarantee by manually adjusting the pressing force by the springs, the constant-pressure floating control of the tensioning roller 218 can be realized by the pressing pressure regulating valve, so that the constant pressing force acting on the ramie can be guaranteed. Further, the support plate 233 is provided with link guide grooves 227 for guiding the link plates 226 of the front clamp conveying chain 210, and the tension roller 218 is provided with link guide convex rings 228 capable of being clamped between the link plates 226 arranged oppositely, so that the abutting positions of the upper clamp conveying chain 211 and the lower clamp conveying chain 212 are prevented from shifting left and right.

In this embodiment, both ends of the chain wheel 213 are pivotally connected to the chain wheel support 229, one end of the chain wheel support 229 is provided with the chain tensioning mechanism 230, the chain wheel support 229 is installed on the kidney-shaped hole on the frame 1 so as to be capable of sliding and tensioning, the chain tensioning mechanism 230 comprises a chain tensioning hydraulic/pneumatic cylinder 221 installed on the frame 1, and a piston rod of the chain tensioning hydraulic/pneumatic cylinder 221 is connected to the chain wheel support 229, so as to further realize precise control and automatic control.

In the embodiment, the ramie stalks and ramie fibers are prevented from contacting with the chain, the rotating shaft and the like on the clamping and conveying device to be wound in the clamping and conveying process, the front ramie emergence protective cover 23 is arranged on one side of the clamping and conveying chain, which is far away from the front ramie peeling mechanism 25, and the wing plates 231 extending in the front ramie protective cover 23 are arranged on two sides of the vertical plate 262, so that the gap between the front ramie stalks and the ramie fibers and the front ramie protective cover 23 can be blocked; a chain wheel of the clamping conveying chains on the upper side and the lower side of the rack 1 is connected with a chain wheel driving motor 232, and the clamping conveying chains on the upper side and the lower side of the rack 1 are in friction transmission in the meshing process of the elastic pressing block 257 and the concave clamping plate 258, so that on one hand, the number of the motors is reduced, and on the other hand, the synchronous motion between the upper clamping conveying chain 211 and the lower clamping conveying chain 212 is thoroughly ensured. Meanwhile, the chain wheel 213 is provided with a lightening hole 263, so that the driving energy consumption is further optimized and solved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A bidirectional ramie decorticator is characterized by comprising a rack (1), and a front ramie decorticator (2) and a rear ramie decorticator (3) which are arranged on the rack (1), wherein the front ramie decorticator (2) comprises a front ramie clamping and conveying device (21) and a front ramie decorticator (25), the front ramie clamping and conveying device (21) comprises a front clamping and conveying chain (210) which is arranged up and down relatively and used for clamping and conveying ramie, the rear ramie decorticator (3) comprises a rear ramie clamping and conveying device (31) and a rear ramie decorticator (35), the rear ramie clamping and conveying device (31) comprises a rear clamping and conveying chain (310) which is arranged up and down relatively and used for clamping and conveying ramie, the rear ramie decorticator (35) is arranged on one side of the rear clamping and conveying chain (310), and the rear clamping and conveying chain (310) and the front ramie decorticator (25) are both arranged on the same side of the front clamping and conveying chain (210), the output of preceding centre gripping conveying chain (210) sets up with the input of back centre gripping conveying chain (310) is crisscross, just be provided with between the output of preceding centre gripping conveying chain (210) and the input of back centre gripping conveying chain (310) and transition to the ramie transition mechanism (4) of back centre gripping conveying chain (310) one side with the ramie fibre after preceding decorticating mechanism (25) is decorticated, back decorticating mechanism (35) set up the opposite side of back centre gripping conveying chain (310).

2. The bidirectional ramie decorticator according to claim 1, wherein the front decorticator (25) comprises a front decorticator drum (251) and a front decorticator concave (252) arranged on the lower side of the front decorticator drum (251) with a gap, the rear decorticator (35) comprises a rear decorticator drum (351) and a rear decorticator concave (352) arranged on the lower side of the rear decorticator drum (351) with a gap, the ramie transition mechanism (4) comprises a plurality of transition rods (41), one end of each transition rod (41) is connected with the output end of the front decorticator concave (252), and the other end extends towards the input end of the rear clamping conveyor chain (310).

3. The bidirectional ramie decorticator according to claim 2, wherein a rear ramie-discharging protective cover (33) for supporting ramie fibers is arranged on one side of the rear holding conveyor chain (310), the upper side of the rear ramie-discharging protective cover (33) is located on the lower side of the holding position of the rear holding conveyor chain (310), one end of the transition rod (41) is connected with the output end of the front ramie-peeling concave plate (252), and the other end of the transition rod is connected with the rear ramie-discharging protective cover (33).

4. The bidirectional ramie decorticator according to claim 3, further comprising a fan (5) mounted on the frame (1), wherein the fan (5) has an outlet opening facing the transition bar (41), and the fan (5) blows air from the side of the front holding conveyor chain (210) to the side of the rear holding conveyor chain (310).

5. The bidirectional ramie decorticating machine according to any one of claims 2 to 4, wherein the front decorticating roller (251) and the rear decorticating roller (351) are circumferentially provided with a decorticating plate (253), the lower sides of the front decorticating concave plate (252) and the rear decorticating concave plate (352) are provided with automatic telescopic members (256) for adjusting the gap between the automatic telescopic members and the decorticating plate (253), and the driving ends of the automatic telescopic members (256) are connected with the front decorticating concave plate (252) and the rear decorticating concave plate (352).

6. The bidirectional ramie decorticator according to claim 5, characterized in that the automatic telescopic part (256) is a hydraulic or pneumatic support cylinder, the cylinder body of which is mounted on the frame (1), and the piston rod of which is connected to the front and rear decorticating concave plates (252, 352).

7. The bidirectional ramie decorticator according to any one of claims 1 to 4, wherein the front holding conveyor chain (210) on one side of the front decorticator (2) is provided with an elastic pressing block (257), the front holding conveyor chain (210) on the other side is provided with a concave clamping plate (258) which can be engaged with the elastic pressing block (257), the back holding conveyor chain (310) on one side of the back decorticator (3) is provided with an elastic pressing block (257), the back holding conveyor chain (310) on the other side is provided with a concave clamping plate (258) which can be engaged with the elastic pressing block (257), and the head and tail ends of the adjacent elastic pressing blocks (257) and the head and tail ends of the adjacent concave clamping plates (258) are all seamlessly engaged in the conveying direction of ramie.

8. The bidirectional ramie decorticator according to claim 7, wherein the elastic pressing block (257) is mounted on the chain links (219) of the front clamping conveyor chain (210) and the rear clamping conveyor chain (310), one end of the elastic pressing block (257) is provided with a projection (259), the other end is provided with a groove (260), the groove (260) of the adjacent elastic pressing block (257) is engaged with the projection (259), the concave clamping plate (258) comprises a bottom plate (261) and vertical plates (262) arranged on two sides of the bottom plate (261), and the vertical plates (262) of the adjacent concave clamping plates (258) are staggered with each other.

9. The bidirectional ramie decorticator according to claim 8, wherein the elastic pressing block (257) is mounted on the chain links (219) of the front clamping conveyor chain (210) on the upper side and the rear clamping conveyor chain (310) on the upper side, the concave clamping plate (258) is mounted on the chain links (219) of the front clamping conveyor chain (210) on the lower side and the rear clamping conveyor chain (310) on the lower side, the elastic pressing block (257) is a rubber pressing block, the concave clamping plate (258) is a hard metal clamping plate, the end of the elastic pressing block (257) engaged with the concave clamping plate (258) adopts a circular arc transition, and the upper end of the upper vertical plate (262) of the concave clamping plate (258) is outwards bent in a circular arc shape.

10. The bidirectional ramie decorticator according to claim 7, further comprising an upper tensioning mechanism (214) and a lower tensioning mechanism (215), wherein the upper tensioning mechanism (214) comprises a pressing hydraulic/pneumatic cylinder (216), a U-shaped frame (217) and a tensioning roller (218), the piston rod of the pressing hydraulic/pneumatic cylinder (216) is connected with the U-shaped frame (217), the tensioning roller (218) is mounted on the U-shaped frame (217) and abuts against the front clamping conveyor chain (210) and the rear clamping conveyor chain (310) on the upper side, the lower tensioning mechanism (215) comprises a support plate (233) which can be adjusted up and down, the support plate (233) abuts against the front clamping conveyor chain (210) and the rear clamping conveyor chain (310) on the lower side, and a pressing pressure regulating valve is connected with the pressing hydraulic/pneumatic cylinder (216).

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