A flying shear device for straw production

Abstract

A flying shear device for straw production includes a frame and a rotating mechanism for driving a cutter to rotate about an axis. The frame is connected to an inlet pipe and an outlet pipe for the straws to pass through. The inlet pipe and the outlet pipe are arranged coaxially. A gap is defined between the inlet pipe and the outlet pipe for the cutter to pass through. When the cutter rotates and passes through the gap, it cuts the straws. The moving direction of the straws is parallel to the direction of the rotation axis of the cutter.

Description

Technical Field

[0001] The present invention relates to the technical field of straw manufacturing equipment, in particular to a flying shear device for straw production. Background Art

[0002] Straws are widely used in daily life, for example, to absorb drinks from cups or extract bone marrow from animal long bones. However, in the process of producing straws, the existing technology uses a method of manually cutting straws, which not only poses a safety hazard but is also very inefficient and wastes productivity. Now, a device that can automatically cut straws is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flying shear device for straw production that can replace manual labor to overcome the deficiencies in the prior art.

[0004] The technical solution adopted by the present invention is: a flying shear device for straw production, including a frame and a rotating mechanism for driving a cutter to rotate around an axis. The frame is connected to an inlet pipe and an outlet pipe for the straws to pass through. The inlet pipe and the outlet pipe are coaxially arranged. There is a gap between the inlet pipe and the outlet pipe for the cutter to pass through. When the cutter rotates and passes through the gap, it cuts the straws, and the moving direction of the straws is parallel to the axis of rotation of the cutter.

[0005] The rotating mechanism of the present invention comprises a motor, and the motor drives the cutter to rotate.

[0006] The cutter of the present invention is fixedly connected to a knife holder, and the motor drives the knife holder to rotate; the knife holder is arranged to move along a moving direction parallel to the moving direction of the straw, and when the moving direction of the knife holder and the moving direction of the straw are the same, the moving speeds of the two are the same.

[0007] The present invention also includes a tool holder rotatably connected to the tool holder, the tool holder is slidably connected to the frame, the tool holder is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to the first transmission plate, the first transmission plate is rotatably arranged and driven by a motor, and the rotation axis of the first transmission plate is deviated from the rotation axis of the connecting rod and the first transmission plate.

[0008] In the present invention, the first transmission disc drives the second transmission disc to rotate via a transmission belt.

[0009] The second transmission disc of the present invention is connected to the input end of a commutator, and the output end of the commutator drives the first transmission wheel to rotate. The first transmission wheel drives the second transmission wheel through a synchronous belt. The second transmission wheel is fixedly connected to the first transmission shaft, and the first transmission shaft drives the tool holder to rotate.

[0010] The cutter rotates one circle when the knife holder reciprocates once; the reciprocating cutter cuts the straw before or at the inflection point of the first half cycle of the knife holder.

[0011] In the present invention, the first transmission disc, the second transmission disc, the first transmission wheel, and the second transmission wheel have the same disc diameter.

[0012] The periphery of the first transmission shaft of the present invention has a keyway axially parallel to the first transmission shaft, the periphery of the first transmission shaft is sleeved with an inner sleeve adapted thereto, the periphery of the inner sleeve is sleeved with an outer sleeve adapted thereto, the inner sleeve is rotatably connected to the outer sleeve, the inner sleeve is fixedly connected to the tool holder, the outer sleeve is fixedly connected to the tool seat, the inner sleeve rotates synchronously with the first transmission shaft and slides along the first transmission shaft.

[0013] The present invention also includes a fixing plate fixedly arranged perpendicularly to the outlet pipe, and both ends of the fixing plate are fixedly connected to the frame through fixing columns arranged parallel to the outlet pipe. A positioning sleeve allowing the outlet pipe to pass through is fixedly provided in the middle of the fixing plate, one end of the outlet pipe passes through the positioning sleeve and is fixedly arranged with the positioning sleeve, and the other end of the outlet pipe is fixedly connected to the frame through a pipe mounting mechanism.

[0014] The pipeline installation mechanism described in the present invention includes a fixing sleeve fixedly connected to the frame, a clamping sleeve is arranged on the inner ring of the fixing sleeve, a ball screw is provided between the clamping sleeve and the fixing sleeve, the steel ball of the ball screw abuts against the groove of the clamping sleeve, the outer side of the clamping sleeve is fixedly connected to a fixing ring, and the outlet pipe passes through the clamping sleeve, the fixing ring in sequence and is fixedly connected to the clamping sleeve and the fixing ring.

[0015] The upper end of the knife holder of the present invention is provided with a support seat fixedly connected to the knife base, and the support seat has a cutting groove allowing the cutter to rotate. The cutting groove is at the same height as the inlet pipe, and the straw passes through the cutting groove.

[0016] The first transmission plate of the present invention is fixedly connected to the eccentric block, and the other end of the connecting rod is rotatably connected to the eccentric block on the first transmission plate. The eccentric block has a T-shaped slot and a T-shaped block. The T-shaped block is slidably arranged along the T-shaped slot. The T-shaped slot has mounting positions at different positions. The connecting rod has a first through hole, and the T-shaped block has a second through hole. The core shaft passes through the first through hole and the second through hole and is fixedly connected to one of the mounting positions, thereby rotatably connecting the connecting rod and the T-shaped block.

[0017] The lower end of the knife holder of the present invention is provided with an oil box fixedly connected to the knife seat, a sponge with oil is arranged in the oil box, and the cutter contacts the sponge when it rotates downward.

[0018] The commutator of the present invention is fixedly connected to a coupling, the coupling is fixedly connected to a rotatably arranged second transmission shaft, and the second transmission shaft is connected to the first transmission wheel.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention is provided with a rotating mechanism, and the cutter is driven to rotate by the rotating mechanism. The straws are input from the inlet pipe and output from the outlet pipe. The cutter rotates to cut the straws, thereby realizing mechanical cutting of the straws. The degree of mechanization is high. Compared with the manual cutting of the existing technology, the invention saves manpower, improves cutting quality, and improves production efficiency.

[0021] 2. The present invention ensures that the moving direction of the knife holder and the moving direction of the straw are the same, so that the moving speeds of the two are the same, thereby ensuring the smoothness of the incision when the straw is cut, and improving the quality of the incision of the straw.

[0022] 3. In the present invention, the rotation and sliding of the cutter are driven by the same motor, which saves resources and has a high resource utilization rate compared to using two motors to drive the rotation and sliding of the cutter respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural perspective view of the present invention.

[0024] Figure 2 It is a structural stereogram from another perspective of the present invention.

[0025] Figure 3 It is a front view of the present invention.

[0026] Figure 4 It is a top view of the present invention.

[0027] Figure 5 It is a partial enlarged view of the eccentric block of the present invention.

[0028] Figure 6 It is a partial enlarged view of the pipeline installation mechanism of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and through examples.

[0030] like Figures 1 to 6As shown, the flying shear device for straw production described in this embodiment includes a frame 1 and a rotating mechanism 2 for driving a cutter 283 to rotate around a rotation axis. The frame 1 is connected to an inlet pipe 4 and an outlet pipe 5 for the straws to pass through. The inlet pipe 4 and the outlet pipe 5 are coaxially arranged. There is a gap between the inlet pipe 4 and the outlet pipe 5 for the cutter 283 to pass through. The cutter 283 cuts the straws when it rotates and passes through the gap. The moving direction of the straws is parallel to the rotation axis direction of the cutter 283. In this embodiment, a rotating mechanism 2 is provided, which drives the cutter 283 to rotate. The straws are input from the inlet pipe 4 and output from the outlet pipe 5. The rotating mechanism 2 drives the cutter 283 to rotate and cuts the straws located between the inlet pipe 4 and the outlet pipe 5, thereby realizing mechanical cutting of the straws, and the degree of mechanization is high.

[0031] The rotating mechanism 2 of this embodiment includes a motor 21, which directly drives the cutter 283 to rotate; the cutter 283 is fixedly connected to a knife holder 28, and the motor 21 drives the knife holder 28 to rotate; the knife holder 28 is arranged to move along a moving direction parallel to the moving direction of the straw, and when the moving direction of the knife holder 28 is in the same direction as the moving direction of the straw, the movement speeds of the two are the same; it also includes a knife holder 25 connected to the knife holder 28 for rotation, the knife holder 25 is slidingly connected to the frame 1, and the knife holder 25 is rotatably connected to a connecting rod 24, the other end of the connecting rod 24 is rotatably connected to the first transmission disc 22, the first transmission disc 22 is rotatably arranged and driven by the motor 21, and the rotation axis of the first transmission disc 22 is deviated from the rotation axis of the connecting rod 24 and the first transmission disc 22 for rotation; the first transmission disc 22 drives the second transmission disc 32 to rotate through the transmission belt 31; the second transmission disc 32 is connected The input end of a commutator 33 and the output end of the commutator 33 drive the first transmission wheel 36 to rotate, the first transmission wheel 36 drives the second transmission wheel 38 through a synchronous belt 37, the second transmission wheel 38 is fixedly connected to the first transmission shaft 29, the first transmission shaft 29 drives the knife holder 28 to rotate, at this time the axis of the first transmission shaft (29) is the axis around which the cutter (283) rotates; the motor 21 in this embodiment drives the first transmission disc 22, the first transmission disc 22 drives the second transmission disc 32 to rotate through a transmission belt 31, the second transmission disc 32 drives the first transmission wheel 36 through the commutator, the first transmission wheel 36 drives the second transmission wheel 38 to rotate through a synchronous belt 37, the second transmission wheel 38 drives the first transmission shaft 29 to rotate, and then drives the knife holder 28 to rotate, the knife holder 28 drives the cutter 283 fixedly connected to the knife holder 28 to rotate, thereby achieving straw cutting.

[0032] In this embodiment, the first transmission disc 22, the second transmission disc 32, the first transmission wheel 36, and the second transmission wheel 38 have the same disc diameter size. When the knife seat 25 reciprocates once, the cutter 283 rotates one circle; the first transmission disc 22, the second transmission disc 32, the first transmission wheel 36, and the second transmission wheel 38 have the same disc diameter size to achieve the uniformity of the rotation speed during transmission between the first transmission disc 22 and the second transmission disc 32, the second transmission disc 32 and the first transmission wheel 36, and the first transmission wheel 36 and the second transmission wheel 38; and the knife seat 25 reciprocates once, and the cutter 283 rotates one circle; the reciprocating cutter 283 cuts the straw before or at the inflection point of the first half cycle of the knife seat 25; the inflection point is the closest distance between the knife seat 25 and the eccentric block 23 and the farthest distance between the knife seat 25 and the eccentric block 23, that is, when the distance between the knife seat 25 and the eccentric block 23 is the closest. The knife holder 25 moves in the same direction as the straw to the inflection point of the first half cycle of the knife holder 25. After reaching the inflection point of the first half cycle, the knife holder 25 changes direction and moves in the opposite direction of the straw movement until the distance between the knife holder 25 and the eccentric block 23 is the farthest. At this time, the knife holder 25 reaches the inflection point of the second half cycle. After reaching the inflection point of the second half cycle, the knife holder 25 changes direction and moves in the same direction as the straw movement direction. The cutter 283 slides with the straw or at the inflection point of the first half cycle. The cutter 283 rotates to the straw position to cut the straw. The sliding stroke of the knife holder 25 on the frame 1 is set, that is, the maximum distance between the knife holder 25 and the eccentric block 23 is set. The circumference of the rotation of the cutter 283 is set and recorded. That is, the maximum distance between the knife holder 25 and the eccentric block 23 is set to be greater than or equal to half of the circumference of the rotation of the cutter 283. The reciprocating cutter 283 can cut the straw before or at the inflection point of the first half cycle of the knife holder 25.

[0033] In this embodiment, the periphery of the first transmission shaft 29 has a keyway parallel to the axial direction of the first transmission shaft 29, the periphery of the first transmission shaft 29 is sleeved with an inner sleeve 291 adapted thereto, the periphery of the inner sleeve 291 is sleeved with an outer sleeve 292 adapted thereto, the inner sleeve 291 is rotatably connected to the outer sleeve 292, the inner sleeve 291 is fixedly connected to the tool holder 28, the outer sleeve 292 is fixedly connected to the tool seat 25, the inner sleeve 291 rotates synchronously with the first transmission shaft 29 and slides along the keyway of the first transmission shaft 29; in this embodiment, the inner sleeve 291 is fixedly connected to the tool holder 28, so that the tool holder 28 slides along the first transmission shaft 29 when rotating, and the outer sleeve 292 is fixedly connected to the tool holder 25, so that the tool holder 25 slides along the tool holder 1.

[0034] Preferably, the first pressure wheel 311 is further included for tensioning the transmission belt 31, wherein the first pressure wheel 311 is located between the first transmission disc 22 and the second transmission disc 32, and the first pressure wheel 311 contacts the outer periphery of the transmission belt 31; by setting the first pressure wheel 311, the transmission belt 31 is tensioned to prevent the transmission belt 31 from slipping when the first transmission disc 22 and the second transmission disc 32 are transmitting, thereby improving the transmission efficiency.

[0035] Preferably, a second pressure wheel 371 for tensioning the synchronous belt 37 is further included, wherein the second pressure wheel 371 is located between the first transmission wheel 36 and the second transmission wheel 38, and the second pressure wheel 371 contacts the periphery of the synchronous belt 37; by setting the second pressure wheel 371, the synchronous belt 37 is tensioned to prevent the synchronous belt 37 from slipping when the first transmission wheel 36 and the second transmission wheel 38 are transmitting, thereby improving the transmission efficiency.

[0036] In this embodiment, the first transmission plate 22 is fixedly connected to the eccentric block 23, and the other end of the connecting rod 24 is rotatably connected to the eccentric block 23 on the first transmission plate 22. The eccentric block 23 has a T-slot 231 and a T-block 232. The T-block 232 is slidingly arranged along the T-slot 231. The T-slot 231 has mounting positions at different positions. The connecting rod 24 has a first through hole, and the T-block 232 has a second through hole. The core shaft 241 passes through the first through hole and the second through hole and is fixedly connected to one of the mounting positions, thereby rotatably connecting the connecting rod 24 and the T-block 232. The function of the eccentric block 23 described in this embodiment is to enable the knife seat 25 to make reciprocating motion along the frame 1, so as to realize the cyclic continuous cutting of the straw by the cutter 283; when the length of the straw cutting needs to be adjusted, the eccentric distance of the eccentric block 23 can be changed. The eccentric block 23 has a scale indicating the eccentric distance, that is, the core shaft 241 is loosened and the T-block 232 is slid to the installation position of the corresponding eccentric distance and then the core shaft 241 is tightened. When the required straw length needs to be lengthened, the T-block 232 is slid to the appropriate installation position to increase the eccentric distance; when the required straw length needs to be shortened, the T-block 232 is slid to the appropriate installation position to reduce the eccentric distance.

[0037] In this embodiment, a slider 26 is fixedly provided at the bottom of the tool holder 25, and a slide rail 27 adapted to the slider 26 is fixedly provided on the frame 1. The tool holder 25 is slidably connected to the frame 1 through the slider 26 and the slide rail 27. In this embodiment, the tool holder 25 is slidably connected to the frame 1 through the coordinated use of the slider 26 and the slide rail 27. Moreover, the coordinated setting of the slider 26 and the slide rail 27 makes the sliding of the slide 25 and the frame 1 stable and reliable, and the docking accuracy is improved.

[0038] This embodiment also includes a fixing plate 51 fixedly arranged perpendicularly to the outlet pipe 5, and both ends of the fixing plate 51 are fixedly connected to the frame 1 through fixing columns 511 arranged parallel to the outlet pipe 5, and a positioning sleeve 52 is fixedly provided in the middle of the fixing plate 51 to allow the outlet pipe 5 to pass through, one end of the outlet pipe 5 passes through the positioning sleeve 52 and is fixedly arranged with the positioning sleeve 52, and the other end of the outlet pipe 5 is fixedly connected to the frame 1 through a pipe mounting mechanism 53; the pipe mounting mechanism 53 includes a fixing sleeve 54 fixedly connected to the frame 1, a clamping sleeve 55 is sleeved on the inner ring of the fixing sleeve 54, a ball screw 56 is provided between the clamping sleeve 55 and the fixing sleeve 54, the steel ball of the ball screw 56 contacts the groove of the clamping sleeve 55, and the outer side of the clamping sleeve 55 is fixedly connected to a fixing ring 57, and the outlet pipe 5 passes through the clamping sleeve 55, the fixing sleeve 55 and the fixing sleeve 54 in sequence. When the pipe is blocked, the fixing ring 57 and the clamping sleeve 55 fixed thereto are manually pulled out, and the steel ball of the ball screw 56 pops up, and the ball screw 56 is free from the restraint of the clamping sleeve 55. At this time, the clamping sleeve 55, the fixing ring 57 and the pipe are pulled out horizontally along the direction of the pipe, and the pipe can be repaired. When the repair is completed, the pipe is put back, and the ball screw 56 plays the role of locking and fixing the clamping sleeve 55 and finally locking and fixing the pipe. It prevents the pipe from falling off due to the loose installation after the pipe is put back when the pipe is repaired.

[0039] The lower end of the blade holder 28 of this embodiment is provided with an oil box 282 fixedly connected to the slide 25. A sponge filled with oil, preferably silicone oil, is contained within the oil box 282. The cutter 283 contacts the sponge as it rotates downward. In this embodiment, the cutter 283 passes through the oil sponge at its lowest point, preventing glue from adhering to the cutter 283 and affecting its sharpness and cutting performance.

[0040] Among them, a first sensor 6 is fixed at the upper end of the inlet pipe 4 to detect whether the straw passes through the inlet pipe 4 smoothly. The first sensor 6 is connected to a first single-chip microcomputer. The first sensor 6 transmits the detected information to the first single-chip microcomputer, and the first single-chip microcomputer calculates and processes the received information and triggers an alarm. The first sensor 6 is an infrared sensor, and the model of the infrared sensor is RE200B. The RE200B infrared sensor can improve the stability of the work and accurately determine whether there is a straw at the inlet pipe 4. The first single-chip microcomputer is an AT89C2051 single-chip microcomputer.

[0041] Among them, the transmission shaft 35 is connected to a second sensor 7 for detecting the number of rotations of the transmission shaft 35. The second sensor 7 is connected to a second single-chip microcomputer. The second sensor 7 transmits the detected information to the second single-chip microcomputer, and the second single-chip microcomputer calculates and processes the received information and displays it on a display. The sensor is an angle sensor, and the model of the angle sensor is P6500. When the angle sensor measures that the transmission shaft 35 rotates 360 degrees, the count is 1, that is, the number of rotations of the transmission shaft 35 is the number of cut straws. The second single-chip microcomputer is an AT89C2051 single-chip microcomputer.

[0042] Preferably, a support base 281 is provided at the upper end of the blade holder 28, fixedly connected to the blade base 25. The support base 281 has a cutting groove that allows the cutter 283 to rotate. The cutting groove is flush with the inlet pipe 4, and the straw passes through the cutting groove. In this embodiment, the support base 281 supports the straw and prevents the middle portion from sagging due to gravity, thereby improving the quality of the cut straw.

[0043] The specific operating steps of the device for cutting straws described in this embodiment are as follows: the straw enters from the inlet pipe 4 and passes through the support seat 281 and the outlet pipe 5 in sequence, the motor 21 is turned on, the motor 21 drives the first transmission plate 22 to rotate, the first transmission plate 22 drives the eccentric block 23 to rotate, the eccentric block 23 drives the connecting rod 24 to move, the connecting rod 24 drives the knife seat 25 to slide along the slide rail 27, the knife seat 25 drives the knife holder 28 to move, and the knife holder 28 drives the cutter 283 to move toward the outlet pipe 5. At the same time, the first transmission plate 22 drives the second transmission plate 32 to rotate, the second transmission plate 32 drives the transmission shaft 35 to rotate through the commutator 33, the transmission shaft 35 drives the first transmission wheel 36 to rotate, the first transmission wheel 36 drives the second transmission wheel 38 to rotate, the second transmission wheel 38 drives the knife holder 28 to rotate through the first transmission shaft 29, the knife holder 28 drives the cutter 283 to rotate, and when the cutter 283 rotates, it passes through the cutting groove with straws in the support seat 281, and finally completes the cutting of the straws. During the pipe cutting process, the moving speed of the cutter 283 is consistent with the pipe outlet speed of the straw. When the straw is cut, the eccentric block 23 rotates half a circle, and the eccentric block 23 drives the knife holder 25 to slide along the slide rail 27 to the original position through the connecting rod 24. The cutter 283 driven by the knife holder 28 also rotates a circle and resets. The cut straw passes through the pipe outlet pipe 5 and enters the next process for processing. This reciprocating process completes the continuous cutting of the straw. When the length of the straw needs to be increased, the change of The eccentric distance of the eccentric block 23 is adjusted, the core shaft 241 is loosened, the T-block 232 is slid to the installation position of the corresponding eccentric distance, and then the core shaft 241 is tightened; when the suction pipe in the outlet pipe 5 is blocked, the fixing ring 57 and the clamping sleeve 55 fixed thereto are manually pulled out with force, the steel ball of the ball screw 56 pops up, and the clamping sleeve 55, the fixing ring 57 and the outlet pipe 5 are pulled out horizontally along the direction of the outlet pipe 5 together, and the outlet pipe 5 can be inspected; when the inspection is completed, the outlet pipe 5 is reinstalled.

Claims

1. A flying shear device for straw production, characterized in that: The invention comprises a frame (1) and a rotating mechanism (2) for driving a cutter (283) to rotate around an axis, wherein the frame (1) is connected to an inlet pipe (4) and an outlet pipe (5) for a straw to pass through, the inlet pipe (4) and the outlet pipe (5) are coaxially arranged, and a gap is provided between the inlet pipe (4) and the outlet pipe (5) for the cutter (283) to pass through. When the cutter (283) rotates and passes through the gap, the straw is cut, and the moving direction of the straw is parallel to the axis of rotation of the cutter (283); the rotating mechanism (2) comprises a motor (21); The cutter (283) is fixedly connected to a knife holder (28), and the motor (21) drives the knife holder (28) to rotate; the knife holder (28) is arranged to move in a direction parallel to the movement direction of the straw, and when the movement direction of the knife holder (28) is the same as the movement direction of the straw, the movement speeds of the two are the same; The machine also includes a knife seat (25) rotatably connected to the knife holder (28), the knife seat (25) being slidably connected to the frame (1), the knife seat (25) being rotatably connected to a connecting rod (24), the other end of the connecting rod (24) being rotatably connected to a first transmission disc (22), the first transmission disc (22) being rotatably arranged and driven by a motor (21), the rotation axis of the first transmission disc (22) being deviated from the rotation axis of the connecting rod (24) and the first transmission disc (22) being rotatably connected; The first transmission disc (22) drives the second transmission disc (32) to rotate via a transmission belt (31); The second transmission disc (32) is connected to the input end of a commutator (33), and the output end of the commutator (33) drives the first transmission wheel (36) to rotate. The first transmission wheel (36) drives the second transmission wheel (38) through a synchronous belt (37). The second transmission wheel (38) is fixedly connected to the first transmission shaft (29), and the first transmission shaft (29) drives the tool holder (28) to rotate. The cutter (283) rotates one circle when the knife holder (25) reciprocates once; the reciprocating cutter (283) cuts the straw before or at the inflection point of the first half cycle of the knife holder (25).

2. A flying shear device for straw production according to claim 1, characterized in that: The first transmission disc (22), the second transmission disc (32), the first transmission wheel (36), and the second transmission wheel (38) have the same disc diameter.

3. A flying shear device for straw production according to claim 1, characterized in that: The periphery of the first transmission shaft (29) has a keyway axially parallel to the first transmission shaft (29), the periphery of the first transmission shaft (29) is sleeved with an inner sleeve (291) adapted thereto, the periphery of the inner sleeve (291) is sleeved with an outer sleeve (292) adapted thereto, the inner sleeve (291) and the outer sleeve (292) are rotatably connected, the inner sleeve (291) is fixedly connected to the tool holder (28), the outer sleeve (292) is fixedly connected to the tool holder (25), and the inner sleeve (291) rotates synchronously with the first transmission shaft (29) and slides along the first transmission shaft (29).

4. A flying shear device for straw production according to claim 1, characterized in that: It also includes a fixing plate (51) fixedly arranged perpendicularly to the outlet pipe (5), and both ends of the fixing plate (51) are fixedly connected to the frame (1) via fixing columns (511) arranged parallel to the outlet pipe (5). A positioning sleeve (52) is fixedly provided in the middle of the fixing plate (51) for allowing the outlet pipe (5) to pass through. One end of the outlet pipe (5) passes through the positioning sleeve (52) and is fixedly arranged with the positioning sleeve (52), and the other end of the outlet pipe (5) is fixedly connected to the frame (1) via a pipe mounting mechanism (53).

5. A flying shear device for straw production according to claim 4, characterized in that: The pipeline installation mechanism (53) includes a fixing sleeve (54) fixedly connected to the frame (1), a clamping sleeve (55) is provided on the inner ring of the fixing sleeve (54), a ball screw (56) is provided between the clamping sleeve (55) and the fixing sleeve (54), a steel ball of the ball screw (56) abuts against a groove of the clamping sleeve (55), a fixing ring (57) is fixedly connected to the outer side of the clamping sleeve (55), and the outlet pipe (5) passes through the clamping sleeve (55), the fixing ring (57) in sequence and is fixedly connected to the clamping sleeve (55) and the fixing ring (57).

6. A flying shear device for straw production according to claim 1, characterized in that: The upper end of the knife holder (28) is provided with a support seat (281) fixedly connected to the knife seat (25), and the support seat (281) has a cutting groove that allows the cutter (283) to rotate. The cutting groove is at the same height as the inlet pipe (4), and the straw passes through the cutting groove.

7. A flying shear device for straw production according to claim 1, characterized in that: The first transmission disc (22) is fixedly connected to the eccentric block (23), and the other end of the connecting rod (24) is rotatably connected to the eccentric block (23) on the first transmission disc (22). The eccentric block (23) has a T-shaped slot (231) and a T-shaped block (232). The T-shaped block (232) is slidably arranged along the T-shaped slot (231). The T-shaped slot (231) has mounting positions at different positions. The connecting rod (24) has a first through hole, and the T-shaped block (232) has a second through hole. The core shaft (241) passes through the first through hole and the second through hole and is fixedly connected to one of the mounting positions, thereby rotatably connecting the connecting rod (24) and the T-shaped block (232).

8. The flying shear device for straw production according to claim 1, characterized in that: An oil box (282) fixedly connected to the knife seat (25) is provided at the lower end of the knife holder (28). A sponge containing oil is provided in the oil box (282). The cutting knife (283) contacts the sponge when it rotates downward.

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