An automatic rotary cutter for cylindrical gel with a blade and its control method

Abstract

This invention discloses an automatic rotary slicing machine for cylindrical gels with a deflecting blade and its control method. The machine includes a slicing mechanism, a buffer tank, and a feeding mechanism. The slicing mechanism is configured to move away from or towards the feeding mechanism. The feeding mechanism includes a ring-shaped feed chain, a limiting unit, and a mandrel. Several push plates are arranged on the ring-shaped feed chain. A mandrel feeding channel is formed between the limiting unit and the ring-shaped feed chain. The mandrel is pushed by the push plates and fed along the mandrel feeding channel. Through the linkage of the slicing mechanism and the gel feeding, the gel is sliced ​​into sheets. After slicing, the slicing mechanism deflects the blade to allow space for the mandrel to leave. The ring-shaped feed chain and push plates drive the mandrel back. After the mandrel leaves, the slicing mechanism resets to slice the next cylindrical gel. This invention eliminates the need for manual reversal to retrieve the mandrel, achieving automatic feeding and return of the mandrel along the ring-shaped feed chain, reducing the labor intensity of workers and improving the stability of the gel during conveying and slicing.

Description

Technical Field

[0001] This invention relates to the field of tobacco sheet adhesive production technology, specifically to an automatic rotary cutting machine for cylindrical gel with a retractable blade and its control method. Background Technology

[0002] Smoked sheet rubber is a type of rubber sheet made from natural latex through processes such as coagulation, slicing, pressing, and smoking drying. There are two main methods for processing the sliced ​​natural latex blocks after coagulation:

[0003] One method involves cutting a block of raw rubber placed on a table from top to bottom with a blade, such as the rubber slicing device disclosed in CN220030330U. This cutting method is mainly for strip-shaped gels and cannot cut them into continuous sheets.

[0004] Another method involves using a rotary cutter to slice cylindrical gels into long strips, such as the cylindrical gel cutting device disclosed in CN119260835A. This device uses a circular feed chain to transport the cylindrical gel, with the cutter and conveyor roller in fixed positions. As the gel diameter decreases, it's crucial to ensure the cutter can cut the gel and the conveyor roller maintains contact with the gel while the cutter is cutting it. After cutting a cylindrical gel, the mandrel can return in two ways. One is to disconnect the transmission between the circular feed chain and the rotary cutter (clutch disengagement), then manually reverse the circular feed chain to allow the detachable (clamped) mandrel to retract along the feed path. This method relies on manual retraction of the mandrel, which is not conducive to continuous production. The other method involves the mandrel directly circulating back along the circular feed chain. However, due to structural and spatial limitations, this method can lead to unstable gel rotation during the cutting of the tail section or the cutter cutting the mandrel during its return stroke. Furthermore, when threading cylindrical gel through a mandrel, the mandrel needs to be removed from the annular feed chain. After threading the cylindrical gel, the two ends of the mandrel are then installed on two separate chains, which is inconvenient for workers and results in low feeding efficiency of the cylindrical gel. In addition, in the existing method of circulating the mandrel along the annular feed chain, since the mandrel needs to pass under the conveyor roller, a sufficient gap needs to be left between the conveyor roller and the mandrel, which can lead to unstable gel rotation when cutting the tail section of the gel. Summary of the Invention

[0005] To address the problems of existing cylindrical gel rotary cutting machines, such as the need for manual disassembly and assembly of the mandrel, reliance on manual reversal of the feed chain for retrieval, and the susceptibility to interference in the circulation path, leading to high labor intensity, low material feeding efficiency, and limitations on continuous production, as well as unstable rotation during the gel tail-end cutting due to unreasonable spacing between the mandrel and the conveyor roller, this invention provides a deflector-type automatic cylindrical gel rotary cutting machine. The core of this invention lies in designing the rotary cutting mechanism as a movable structure, combined with a pusher-driven mandrel feed channel and annular feed chain, to construct an automatic mandrel circulation conveying system. Simultaneously, the spacing between the conveyor roller and the annular feed chain is optimized. Ultimately, this achieves automatic feeding and return of the mandrel along the annular feed chain without the need for manual reversal for mandrel retrieval, reducing operational difficulty and labor intensity, improving production efficiency, ensuring the stability of gel rotary cutting throughout the entire process (especially the tail end), and meeting the requirements of continuous rotary cutting production.

[0006] This invention provides an automatic rotary cutter for cylindrical gels using a blade, comprising: a rotary cutting mechanism, a buffer pool, and a feeding mechanism, wherein the rotary cutting mechanism is configured to move in a direction away from or toward the feeding mechanism;

[0007] The feeding mechanism includes:

[0008] A ring-shaped feed chain with several push plates mounted on it;

[0009] A limiting unit is located below the annular feed chain, and a mandrel feed channel is formed between the limiting unit and the annular feed chain;

[0010] Mandrel, gel used for mounting;

[0011] The mandrel is pushed by the pusher plate and fed along the mandrel feed channel. After the cylindrical gel is cut, the cutting mechanism moves away from the feeding mechanism. The annular feed chain and the pusher plate drive the mandrel back, forming a cycle of the mandrel along the path of the annular feed chain.

[0012] Furthermore, the limiting unit is a limiting plate, and the inlet end of the limiting plate is provided with a feed guide plate, which is used to guide the mandrel into the mandrel feed channel.

[0013] Furthermore, the mandrel feed channel is U-shaped, so that the mandrel follows a feed path that first moves downwards, then horizontally, and finally tilts upwards.

[0014] Furthermore, the outlet end of the limiting plate is provided with an outlet guide plate, which is arranged concentrically with the sprocket at the turning point of the annular feed chain.

[0015] Furthermore, the rotary cutting mechanism includes:

[0016] A bracket is mounted at the outlet end of the feeding mechanism;

[0017] The mounting base is slidably connected to the bracket;

[0018] A rotary cutting unit is mounted on the mounting base;

[0019] A feed roller is mounted on the mounting base. The rotary cutting unit and the feed roller move with the movement of the mounting base. The gap between the feed roller and the annular feed chain is smaller than the radius of the mandrel.

[0020] Furthermore, the bracket is provided with a rack, the mounting base is provided with a moving motor, and the output end of the moving motor is provided with a gear. The gear meshes with the rack to drive the mounting base to move away from or toward the feeding mechanism.

[0021] Furthermore, the mounting base is connected to the bracket via a guide rail pair.

[0022] Furthermore, the rotary cutting unit includes:

[0023] A cutter drive unit is mounted on the mounting base;

[0024] The drive wheel is connected to the cutter drive component for transmission.

[0025] The driven wheel is connected to the driving wheel via a ring-shaped rotary cutter.

[0026] According to a second aspect, the present invention also provides a control method for an automatic rotary cutter for cylindrical gels using a blade, comprising:

[0027] A first proximity switch J1, a second proximity switch J2, and a third proximity switch J3 are arranged above the annular feed chain 3, sequentially along the return path of the pusher plate 31, for detecting the pusher plate 31. In this embodiment, the first proximity switch J1 and the second proximity switch J2 are located between the third sprocket 34 and the fourth sprocket 35, and the third proximity switch J3 is located downstream of the fourth sprocket 35. The distance between the first proximity switch J1 and the second proximity switch J2 is selected as s mm, and the distance between the second proximity switch J2 and the third proximity switch J3 is selected as x mm. The diameter of the gel 7 is D, the feed rate of the gel 7 is maintained at h mm, and its linear velocity is v mm / s, that is, the diameter of the gel 7 decreases by 2h mm for every revolution. The relationship between the diameter of the cylindrical gel and time is as follows:

[0028] ;

[0029] Considering that the rotary cutter 15 is fixed in position, the gel 7 is fed radially at a speed that is half the diameter reduction speed, and the speed increases with each subsequent step. A positive value is taken.

[0030] ;

[0031] Substituting the original D(t), we obtain the relationship between the radial feed rate of gel 7 and time:

[0032] ;

[0033] Using this speed as the feed speed of the annular feed chain 3, with the pitch circle diameter of its driving sprocket being d, the relationship between the driving sprocket speed n and time can be obtained:

[0034] ;

[0035] The veneer cutting control process is as follows: the veneer cutting motor M1, the conveyor roller drive reduction motor M2, and the chain feed reduction motor M3 all start at their rated speeds. When the push plate 31 triggers the first proximity switch J1, the speed of the chain feed reduction motor M3 is adjusted to... (At initial contact, t=0) As the rotary cutting progresses, when the pusher plate 31 triggers the second proximity switch J2, the chain feed reduction motor M3 returns to its rated speed. At this point, it indicates that the gel 7 has completed the final rotary cut. The second proximity switch J2 acts as the start switch for the retraction of the rotary cutting mechanism 1, quickly driving the moving motor 16 to retract the rotary cutting mechanism 1. After retracting a certain distance, when the mandrel 6 is completely away from the farthest end and no longer interferes with the conveyor roller 11, the rotary cutting mechanism 1 quickly resets. The distance the mandrel 6 has moved is approximately x mm, which is the distance between the second proximity switch J2 and the third proximity switch J3, set to x. This cycle repeats continuously (pusher plate 31 triggers the first proximity switch J1 → speed adjusted to...). →Push plate 31 triggers the second proximity switch J2 →Vessel cutting mechanism 1 retracts →Push plate 31 triggers the third proximity switch J3 →Vessel cutting mechanism 1 resets), until production is completed. This vessel cutting machine can control the running speed of the feed chain according to the vessel cutting requirements (fast and slow speeds are adjustable). Slow speed is suitable for precise positioning when the gel just contacts the blade, which can improve the vessel cutting quality and ensure the vessel cutting thickness; fast speed is used to stabilize the vessel cutting stage to improve efficiency, while allowing the next gel to quickly enter the vessel cutting station, reducing the handover time between gels.

[0036] The method for continuous rotary cutting of cylindrical gels according to the present invention is as follows:

[0037] At the start of S1, the upstream component places the gel 7 to be rotary cut into the buffer pool 2;

[0038] S2 manually inserts the cylindrical gel 7 onto the mandrel 6, places the mandrel 6 on the front feed guide plate 41 and pushes it forward, so that the mandrel 6 with gel 7 enters the mandrel feed channel 43 between the bottom chain of the annular feed chain 3 and the limiting plate 4. With the transmission of the chain, the gel 7 is fed forward along the mandrel feed channel 43 by the push plate 31 on the chain.

[0039] S3 When gel 7 contacts the rotary cutter 15, gel 7 also contacts the conveyor roller 11. Because gel 7 is soft, it will not rotate at the moment of contact. As the chain continues to advance, when gel 7 is squeezed by the conveyor roller 11, it begins to rotate under the action of friction. At the same time, the rotary cutter 15 has cut gel 7 to a certain depth. At this time, through the cooperation of the rotary cutter 15 and the conveyor roller 11, the cylindrical gel can be rotary cut into sheet gel.

[0040] S4 sheet-like gel automatically enters the rear water tank for cleaning;

[0041] As gel 7 is continuously cut, its diameter decreases. When the last cut is made, the diameter of the cylindrical gel is approximately equal to the diameter of the mandrel. Under the squeezing and pulling action of the discharge roller 12 and the conveyor roller 11 of the rotary cutting mechanism 1, the remaining gel can be removed from the mandrel 6. Then, the rotary cutting mechanism 1 quickly retracts under the drive of the gear and rack transmission and the guide rail pair 18, making room for the mandrel 6 to leave. The mandrel 6 continues to move forward with the following chain, passes the far end position, and automatically returns to the initial position. The next gel to be cut can then be inserted onto the mandrel 6 manually.

[0042] When the S6 spindle 6 returns to its initial position after passing the farthest end, the rotary cutting mechanism 1 quickly returns to its initial position under the drive of the gear and rack transmission, and begins to prepare for the rotary cutting of the next gel. This cycle is repeated to complete the continuous rotary cutting of the gel.

[0043] Working principle of the invention:

[0044] After the cylindrical gel is fed into the buffer tank (the gel floats on the water due to buoyancy), the cylindrical gel is manually fixed by a mandrel. The gel is then pushed from the feed guide plate into the mandrel feed channel. Simultaneously, the annular feed chain moves, pushing the mandrel's ends along the feed channel via pushers until it reaches the rotary cutting mechanism for cutting. After the gel is cut, the rotary cutting mechanism retracts, making room for the mandrel to move upwards. The annular feed chain and pushers then drive the mandrel past the conveyor rollers, after which the rotary cutting mechanism resets to begin cutting the next gel. Meanwhile, the mandrel at the top of the annular feed chain, supported by the chain and pushed by the pushers, gradually returns to the beginning of the annular feed chain.

[0045] The beneficial effects of this invention are:

[0046] Ⅰ. Through the coordinated movement of the cylindrical gel feeding mechanism and the rotary cutting mechanism, the cylindrical gel is rotary cut into sheet-like films;

[0047] II. The mandrel is fed from the beginning of the annular feed chain along the mandrel feed channel. After the cylindrical gel is cut, it is transported back to the beginning of the annular feed chain by the mandrel return unit, forming a mandrel cycle. This reduces the process of flipping the chain to retrieve the mandrel, reduces the difficulty and labor intensity of the workers, and improves work efficiency.

[0048] III. During rotary cutting, as the diameter of the gel continuously decreases, it is necessary to ensure that the thickness of the gel remains constant. This provides a precise gel feeding kinematic control method for sheet thickness, which can ensure that the gel thickness and the discharge speed after rotary cutting remain consistent as the gel diameter continuously decreases. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the automatic rotary cutter for cylindrical gel using a blade in Example 1;

[0050] Figure 2 This is a cross-sectional view of the automatic rotary cutter for cylindrical gels using a blade-type blade in Example 1;

[0051] Figure 3 This is a schematic diagram of the inlet side of the rotary cutting mechanism in Example 1;

[0052] Figure 4 This is a schematic diagram of the outlet side of the rotary cutting mechanism in Example 1;

[0053] Figure 5 This is a schematic diagram of the bottom of the rotary cutting mechanism in Example 1;

[0054] Figure 6 This is a schematic diagram of the bracket in Example 1.

[0055] Figure 7 This is a schematic diagram of the feeding mechanism in Example 1;

[0056] Figure 8 This is a schematic diagram of the operation of the feeding mechanism in Example 1;

[0057] Figure 9 This is the control logic diagram of the automatic rotary cutter for cylindrical gel using a blade in Example 1.

[0058] Figure label:

[0059] 1-Veining mechanism; 11-Material roller; 12-Outlet roller; 13-Driving wheel; 14-Driven wheel; 15-Veining blade; 16-Moving motor; 17-Gear; 18-Guide rail pair; 2-Buffer pool; 3-Annular feed chain; 31-Push plate; 32-First sprocket; 33-Second sprocket; 34-Third sprocket; 35-Fourth sprocket; 36-Fifth sprocket; 37-Chain; 4-Limiting plate; 41-Feed guide plate; 42-Outlet guide plate; 43-Mandrel feed channel; 5-Bracket; 51-Mounting base; 52-Rack; 6-Mandrel; 7-Gel; M1-Veining motor; M2-Material roller drive geared motor; M3-Chain feed geared motor. Detailed Implementation

[0060] The present invention will be further described in detail below through specific embodiments. The following embodiments are further descriptions of the present invention based on the content of the present invention, and are only preferred embodiments of the present invention, and are not intended to limit the present invention.

[0061] Example 1

[0062] like Figure 1-2 As shown, this embodiment discloses an automatic rotary slicing machine for cylindrical gels, including: a buffer tank 2, a rotary slicing mechanism 1, and a feeding mechanism. The buffer tank 2 is located on the feeding side of the rotary slicing mechanism 1 and contains water. After the cylindrical gel 7 is fed into the buffer tank 2, the gel 7 is suspended on the water due to buoyancy, which facilitates the movement of the gel 7 and the subsequent threading operation of the mandrel 6. The feeding mechanism is located in the buffer tank 2 and is used to feed the gel 7 to the rotary slicing mechanism 1. The gel 7 contacts the conveyor roller 11 of the rotary slicing mechanism 1. The conveyor roller 11 rotates, causing the gel 7 to rotate around the mandrel 6. At the same time, the rotary slicing blade 15 of the rotary slicing mechanism 1 cuts the rotating gel 7. While cutting, the gel 7 continues to be fed, thereby realizing the continuous slicing of the cylindrical gel 7.

[0063] Specifically, such as Figure 3-6 As shown, the rotary cutting mechanism 1 includes: a bracket 5, a mounting base 51, a rotary cutting unit, and a conveyor roller 11. The bracket 5 is mounted on the outlet end of the feeding mechanism, with its inlet end opposite to the feeding mechanism and its outlet end receiving the downstream rubber sheet washing water tank. The rotary cutting unit is slidably connected to the bracket 5 via the mounting base 51. Both ends of the mounting base 51 are connected to the bracket 5 via guide rail pairs 18. A moving motor 16 is mounted on the mounting base 51, and the output end of the moving motor 16 is connected to a gear 17. The gear 17 meshes with a rack 52 on the bracket 5. The linear gear rack formed by the gear 17 and the rack 52 enables the rotary cutting unit and its conveyor roller 11 to move in a direction away from or towards the feeding mechanism.

[0064] The rotary cutting unit includes: a cutter drive (rotary cutting motor M1), a drive wheel 13 and a driven wheel 14. The rotary cutting motor M1 is connected to the drive wheel 13 for transmission, and the driven wheel 14 is connected to the drive wheel 13 through a ring-shaped rotary cutting blade 15. The rotary cutting motor M1 drives the rotary cutting blade 15 to rotate, thus performing rotary cutting.

[0065] like Figure 7-8 As shown, the feeding mechanism includes an annular feed chain 3, a mandrel 6 for mounting gel 7, and a limiting unit. The annular feed chain 3 consists of two symmetrically arranged chain drive structures, connected by transmission. Each set comprises a first sprocket 32, a second sprocket 33, a third sprocket 34, a fourth sprocket 35, a fifth sprocket 36, and a chain 37, forming a right-angled trapezoidal structure. The distance between the conveyor roller 11 and the chain at the third sprocket 34 is less than the radius of the mandrel 6. This distance between the conveyor roller 11 and the mandrel 6 addresses the problem of unstable gel rotation (inability to rotate or mismatched speed) when cutting the tail section of the gel. However, this method prevents the mandrel 6 from returning from above. Therefore, in this embodiment, the rotary cutting mechanism 1 is designed as a movable structure to allow for avoidance when the mandrel 6 returns.

[0066] A pusher plate 31 is installed on the chain 37. To more clearly illustrate this technical solution, the interval between two adjacent pushers 31 is 640mm. The pusher plate 31 is located on the inner side of the chain 37 (in the chain width direction, on the side closer to the inside of the buffer pool 2). The pusher plate 31 pushes the end of the mandrel 6 to move the mandrel 6 and the gel 7. During the feeding process, due to the restriction of the mandrel feed channel 34, the mandrel 6 and the gel 7 are slightly pressed down. The mandrel 6 and the gel 7 are automatically lifted by the buoyancy, so that the end of the mandrel 6 will abut against the chain of the annular feed chain 3. While realizing the automatic conveying of the mandrel 6, the fluctuation of the mandrel 6 is reduced, which effectively improves the stability of the mandrel 6 during the conveying process.

[0067] A first proximity switch J1, a second proximity switch J2, and a third proximity switch J3 are arranged above the annular feed chain 3, and are arranged sequentially along the return path of the pusher plate 31 to detect the pusher plate 31. In this embodiment, the first proximity switch J1 and the second proximity switch J2 are located between the third sprocket 34 and the fourth sprocket 35, and the third proximity switch J3 is located downstream of the fourth sprocket 35.

[0068] To more clearly illustrate this technical solution, in this embodiment, the distance between the first proximity switch J1 and the second proximity switch J2 is selected as 170mm, and the distance between the second proximity switch J2 and the third proximity switch J3 is selected as 200mm. The diameter of gel 7 is D, the feed amount h of gel 7 is 20mm, the linear velocity v of gel 7 is 190mm / s, the pitch circle diameter d of the driving sprocket of the annular feed chain 3 is 116.59mm, and the initial diameter D0 of gel 7 is 500mm. Therefore, in this embodiment, the relationship between the rotational speed of the chain feed reduction motor M3 and time during rotary cutting is as follows:

[0069] .

[0070] like Figure 9 As shown, the veneer cutting process of this veneer cutting machine is as follows:

[0071] The rotary cutting motor M1 (rated speed 1450 r / min), the belt roller drive geared motor M2 (rated speed 1450 r / min, reduction ratio: 1:32), and the chain feed geared motor M3 (rated speed 1450 r / min, reduction ratio: 1:69) all start at their rated speeds.

[0072] When push plate 31 triggers the first proximity switch J1, the speed of chain feed reduction motor M3 is adjusted to... (t=0 at initial contact) As the rotary cutting proceeds, when the push plate 31 triggers the second proximity switch J2, the chain feed reduction motor M3 returns to its rated speed. At this time, it indicates that the gel 7 has completed the last rotary cut. The second proximity switch J2 acts as the start switch for the retraction of the rotary cutting mechanism 1, quickly driving the moving motor 16 to retract the rotary cutting mechanism 1. The retraction distance is approximately 150mm. When the mandrel 6 is completely away from the farthest end and will not interfere with the feed roller 11, the rotary cutting mechanism 1 quickly resets. The distance the mandrel 6 moves is approximately 200mm, that is, the distance between the second proximity switch J2 and the third proximity switch J3 is set to 200mm.

[0073] This cycle continues (push plate 31 triggers the first proximity switch J1 → speed adjustment to...). →Push plate 31 triggers the second proximity switch J2 →Vessel cutting mechanism 1 retracts →Push plate 31 triggers the third proximity switch J3 →Vessel cutting mechanism 1 resets), until production is completed. This vessel cutting machine can control the running speed of the feed chain according to the vessel cutting requirements (fast and slow speeds are adjustable). Slow speed is suitable for precise positioning when the gel just contacts the blade, improving vessel cutting quality and ensuring the vessel cutting thickness; fast speed is used to stabilize the vessel cutting stage to improve efficiency, while simultaneously allowing the next gel to quickly enter the vessel cutting station, reducing the transition time between gels and improving production efficiency.

[0074] The limiting unit is a limiting plate 4, located below the annular feed chain 3, and entirely below the water surface. It forms a mandrel feed channel 43 with the bottom chain 37 of the annular feed chain 3. A feed guide plate 41 is provided at the inlet end of the limiting plate 4. The inlet end of the feed guide plate 41 is inclined upwards to accommodate the position of the mandrel 6 in the water, facilitating the movement of the mandrel 6 and the gel 7 onto it into the mandrel feed channel 43. The limiting plate 4 is U-shaped, forming a structure parallel to the connection path of the first sprocket 32, the second sprocket 33, and the third sprocket 34, ensuring that the mandrel 6 follows a feeding path that first descends, then remains parallel, and finally tilts upwards. The outlet section of the limiting plate 4 is tilted upwards to convey the gel 7 from bottom to top towards the conveyor roller 11, allowing the conveyor roller 11 to rotate the gel 7. The outlet end of the limiting plate 4 is the outlet guide plate 42, which is arranged concentrically with the third sprocket 34. It is used to limit the spindle 6 and guide the spindle 6 to move towards the fourth sprocket 35 to ensure that the spindle 6 can return stably.

[0075] The specific working process of this veneer laminator is as follows:

[0076] ①At the beginning, the upstream place of the gel 7 to be rotary cut into the buffer pool 2;

[0077] ② Manually insert the cylindrical gel 7 onto the mandrel 6, place the mandrel 6 on the front feed guide plate 41 and push it forward so that the mandrel 6 with gel 7 enters the mandrel feed channel 43 between the bottom chain of the annular feed chain 3 and the limiting plate 4. With the transmission of the chain, the gel 7 is fed forward along the mandrel feed channel 43 by the push plate 31 on the chain.

[0078] ③ When gel 7 contacts the rotary cutter 15, gel 7 also contacts the conveyor roller 11. Because gel 7 is soft, it will not rotate at the moment of contact. As the chain continues to advance, when gel 7 is squeezed by the conveyor roller 11, it will start to rotate under the action of friction. At the same time, the rotary cutter 15 has cut gel 7 to a certain depth. At this time, through the cooperation of the rotary cutter 15 and the conveyor roller 11, the cylindrical gel can be rotary cut into sheet gel.

[0079] ④ The sheet-like gel automatically enters the rear water tank for cleaning;

[0080] ⑤ As the gel 7 is continuously cut, its diameter decreases. When the last cut is made, the diameter of the cylindrical gel is about 170 mm, while the diameter of the mandrel 6 is 160 mm. Under the squeezing and pulling action of the discharge roller 12 and the conveyor roller 11 of the rotary cutting mechanism 1, the residual gel can be removed from the mandrel 6. Then, the rotary cutting mechanism 1 quickly retracts under the drive of the gear and rack transmission and the guide rail pair 18, making room for the mandrel 6 to leave. The mandrel 6 continues to move forward with the following chain, passes the far end position, and automatically returns to the initial position. The next gel to be cut can then be inserted onto the mandrel 6 manually.

[0081] ⑥ When the mandrel 6 returns to its initial position after passing the farthest end, the rotary cutting mechanism 1 quickly returns to its initial position under the drive of the gear and rack transmission, and begins to prepare for the rotary cutting of the next gel. This cycle is repeated to complete the continuous rotary cutting of the gel.

[0082] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An automatic rotary cutter for cylindrical gel using a blade-type mechanism, comprising: The rotary cutting mechanism (1), the buffer pool (2), and the feeding mechanism are characterized in that, The rotary cutting mechanism (1) is configured to move in a direction away from or toward the feeding mechanism; The feeding mechanism includes: An annular feed chain (3) is provided with several push plates (31). A limiting unit is located below the annular feed chain (3), and a spindle feed channel (43) is formed between the limiting unit and the annular feed chain (3). Mandrel (6), gel (7) for mounting; The mandrel (6) is pushed by the push plate (31) and fed along the mandrel feed channel (43). After the gel (7) is cut, the cutting mechanism (1) moves away from the feeding mechanism. The annular feed chain (3) and the push plate (31) drive the mandrel (6) back, forming a cycle of the mandrel (6) along the path of the annular feed chain (3).

2. The automatic rotary cutter for cylindrical gel as described in claim 1, characterized in that, The limiting unit is a limiting plate (4), and the inlet end of the limiting plate (4) is provided with a feed guide plate (41). The feed guide plate (41) is used to guide the mandrel (6) into the mandrel feed channel (43).

3. The automatic rotary cutter for cylindrical gel as described in claim 2, characterized in that, The mandrel feed channel (43) is U-shaped so that the mandrel (6) follows a feed path that is first downward, then parallel, and finally inclined upward.

4. The automatic rotary cutter for cylindrical gel as described in claim 3, characterized in that, The outlet end of the limiting plate (4) is provided with an outlet guide plate (42), and the outlet guide plate (42) is arranged with the sprocket at the turning point of the annular feed chain (3) at the same center.

5. The automatic rotary cutter for cylindrical gel as described in claim 1, characterized in that, The rotary cutting mechanism (1) includes: The bracket (5) is mounted on the outlet end of the feeding mechanism; Mounting base (51) is slidably connected to the bracket (5); A rotary cutting unit is mounted on the mounting base (51); The feed roller (11) is mounted on the mounting base (51), and the rotary cutting unit and the feed roller (11) move with the movement of the mounting base (51); the gap between the feed roller (11) and the annular feed chain (3) is smaller than the radius of the mandrel (6).

6. The automatic rotary cutter for cylindrical gels using a deflector as described in claim 5, characterized in that, The bracket (5) is provided with a rack (52), and the mounting base (51) is provided with a moving motor (16). The output end of the moving motor (16) is provided with a gear (17). The gear (17) meshes with the rack (52) to drive the mounting base (51) to move away from or toward the feeding mechanism.

7. The automatic rotary cutter for cylindrical gel as described in claim 6, characterized in that, The mounting base (51) is connected to the bracket (5) via a guide rail pair (18).

8. The automatic rotary cutter for cylindrical gel as described in claim 5, characterized in that, The rotary cutting unit includes: A cutter drive is mounted on the mounting base (51); The drive wheel (13) is connected to the cutter drive component for transmission; The driven wheel (14) is connected to the driving wheel (13) via a ring-shaped rotary cutter (15).

9. A control method for an automatic rotary cutter for cylindrical gels according to any one of claims 1-8, characterized in that, A first proximity switch (J1), a second proximity switch (J2) and a third proximity switch (J3) are provided above the annular feed chain (3). The rotary cutting mechanism (1) includes: a cutter drive and a material roller drive; Step 1: The rotary cutting mechanism (1) and the annular feed chain (3) are started at their rated speeds; Step 2: When the push plate (31) triggers the first proximity switch (J1), the rotational speed of the annular feed chain (3) is adjusted to... Where D0 is the initial diameter of the gel, h is the feed amount of the gel, v is the linear velocity of gel d, d is the pitch circle diameter of the driving sprocket of the annular feed chain (3), and t is time; When the push plate (31) triggers the second proximity switch (J2), the annular feed chain (3) returns to the rated speed, and at the same time the rotary cutting mechanism (1) retracts; When the push plate (31) triggers the third proximity switch (J3), the rotary cutting mechanism (1) returns to its original position; Step 3: Repeat step 2 until production is complete.

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