Tea cutting machine

Abstract

The utility model discloses a tea cutting machine which comprises a conveying groove and a conveying belt arranged in the conveying groove, a tea outlet is formed in one end of the conveying groove, a rolling cutting device is arranged above the conveying belt, and a supporting plate matched with the rolling cutting device is arranged below the conveying belt. The rolling cutting device comprises a cutter clamping roller rotatably arranged on the conveying groove and a set of rolling cutting blades evenly arranged in the circumferential direction of the cutter clamping roller, rolling cutting gaps are reserved between the rolling cutting blades and the conveying belt, and the rolling cutting device further comprises a rolling cutting motor driving the cutter clamping roller to rotate. Tea leaves cut by the tea leaf cutter are low in breakage rate, few in powder and high in tea cutting efficiency, and the tea leaf cutter can be widely applied to the field of tea leaf processing.

Description

Technical Field

[0001] This utility model relates to the field of tea processing, and in particular to a tea cutting machine. Background Technology

[0002] Tea processing is divided into coarse processing and fine processing. In the fine processing of tea, the dried tea leaves are cut according to requirements. To ensure production efficiency, this cutting is mainly done by mechanical equipment. Currently, most existing tea cutting machines have a double-toothed roller structure, consisting of two toothed rollers rotating in opposite directions and cutting teeth set on the two rollers. Although this structure of tea cutting machine is highly efficient, because the tea leaves fall freely from top to bottom between the two toothed rollers and are then cut by the cutting teeth, a lot of tea fragments are produced, resulting in a high breakage rate and affecting the quality of the tea. Therefore, it is necessary to design a tea cutting machine with a low breakage rate and less tea fragments to improve the quality of the cut tea. Utility Model Content

[0003] The purpose of this invention is to provide a tea cutting machine that solves the problems of high tea breakage rate and excessive tea dust produced by existing tea cutting machines.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: it includes a conveying trough, a conveyor belt set in the conveying trough, a tea outlet set at one end of the conveying trough, a rolling cutting device set above the conveyor belt, and a support plate that cooperates with the rolling cutting device set below the conveyor belt.

[0005] Furthermore, the rolling cutting device includes a cutter clamping roller rotatably mounted on the conveyor trough, and a set of rolling cutting blades evenly arranged in the circumferential direction of the cutter clamping roller. A rolling cutting gap is left between the rolling cutting blades and the conveyor belt. The rolling cutting device also includes a rolling cutting motor that drives the cutter clamping roller to rotate.

[0006] To facilitate assembly, cutter fixing plates are provided at both ends of the cutter clamping roller, and a set of cutter fixing grooves are evenly spaced around the axis of the cutter clamping roller on the cutter fixing plate.

[0007] To prevent the cutter from damaging the conveyor belt, the rolling gap is 1 to 2 millimeters.

[0008] Preferably, the conveying trough is provided with a lifting mechanism for driving the rolling cutting device to move up and down.

[0009] To achieve the lifting and lowering of the rolling cutting device, the lifting mechanism includes two sliders sleeved on both ends of the cutter clamping roller and capable of being lifted and lowered. The two sliders are provided with rotating shaft holes adapted to the cutter clamping roller. The conveying groove is provided with a lifting drive device that drives the two sliders to lift and lower. The two sliders are also provided with a lifting guide device.

[0010] To ensure synchronous lifting of the two sliders, the lifting drive device is a worm gear lift, including a worm gear box fixed on both sides of the conveying trough and located above the slider. The worm gear box is provided with a lifting screw whose end is fixed on the slider. The lifting drive device also includes a linkage worm that passes through the two worm gear boxes. One end of the linkage worm is connected to a worm motor fixed on the conveying trough.

[0011] To ensure that the two sliders move up and down in a straight line, the lifting guide device includes a guide groove on the slider and a guide bar on the conveying groove that is adapted to the guide groove.

[0012] In order to cut tea leaves of different lengths, multiple rolling cutting devices are arranged at intervals above the conveyor belt along the tea leaf conveying direction, and the rolling cutting blades on each rolling cutting device have different spacing.

[0013] To ensure that the tea leaves are evenly distributed on the conveyor belt, a vibrating conveyor is connected to the feed end of the conveying trough. The vibrating conveyor includes a fixed base and a vibrating trough located above the fixed base. A set of leaf springs is connected between the fixed base and the vibrating trough. A vibrating motor is installed on the fixed base. A cam is connected to the output end of the vibrating motor. A connecting rod is hinged to the cam. The other end of the connecting rod is hinged to the bottom of the vibrating trough.

[0014] The beneficial effects of this utility model are as follows: This utility model transports tea leaves via a conveyor belt. During the transport process, with the cooperation of the rolling cutting device and the support plate, the cutting blade is rotated by the cutting clamping roller, and the tea leaves on the conveyor belt are cut by the tip of the rolling cutting blade. Throughout the process, the tea leaves only come into contact with the rolling cutting blade at the cutting point, resulting in a low breakage rate and minimal fragmentation. Furthermore, while the conveyor belt continuously feeds the tea, the cutting clamping roller continuously rotates, driving multiple rolling cutting blades to alternately cut the tea, resulting in high tea-cutting efficiency. Simultaneously, when the tip of the rolling cutting blade rotates to its lowest point, a 1-2 mm rolling cutting gap remains between it and the conveyor belt, preventing the rolling cutting blade from cutting the conveyor belt and damaging it. Additionally, the rolling cutting blade can be placed on the cutting blade fixing plate through the cutting blade fixing groove, and the rolling cutting blade is secured by the engagement of the annular pressure plate with the groove on the cutting blade, and locked in place with locking bolts. For maintenance, the locking bolts can be removed, and the pressure plate can be taken out, facilitating disassembly and installation. At the same time, the tea leaves are dispersed and evenly distributed by the vibrating conveyor before falling evenly onto the conveyor belt. This prevents the tea leaves from piling up on the conveyor belt, which would cause insufficient rolling pressure at high points, making it difficult to cut the tea leaves smoothly. As a result, the tea leaves are crushed, producing more tea dust and affecting the quality of the tea.

[0015] Furthermore, this invention features multiple rolling cutting devices spaced apart above the conveyor belt, each with a different spacing between its rolling blades, resulting in tea leaves of varying lengths. A single rolling cutting device can be selected based on size requirements. A lifting mechanism lowers this device to the desired cutting height, while the remaining devices are raised away from the conveyor belt and tea leaves. This allows for the cutting of tea leaves of different lengths. When tea cutting is not needed, all rolling cutting devices can be raised away from the conveyor belt and tea leaves, functioning as a single conveyor for transporting tea leaves or other materials. This multi-functional design offers a wide range of applications. Simultaneously, the worm gear lift mechanism drives the two sliders to rise and fall synchronously, ensuring the cutting blade clamping roller remains horizontal and preventing height differences at both ends, which could cause the rolling blades to skew and affect the cutting effect. Furthermore, the worm gear lift mechanism has a self-locking function, preventing the cutting blade clamping roller from shifting or loosening after reaching its designated position.

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the connection between the conveying trough and the vibrating conveyor in this utility model.

[0018] Figure 2 This is a front view of the vibrating conveyor in this utility model.

[0019] Figure 3 This is a perspective view of the present invention.

[0020] Figure 4 This is the front view of the present invention.

[0021] Figure 5 This is the right view of the present invention.

[0022] Figure 6 This is a schematic diagram showing the position of the support plate in this utility model.

[0023] Figure 7 This is a right view of the assembly of the cutter clamping roller and the cutter fixing plate in this utility model.

[0024] Figure 8 This is a front view of the cutter being fixed to the cutter fixing plate by a pressure plate in this utility model.

[0025] Figure 9 This utility model Figure 8 A magnified schematic diagram of part B in the middle.

[0026] Figure 10 This is the front view of the cutter fixing disc in the figure of this utility model.

[0027] Figure 11 This is a schematic diagram of the slot position on the cutter that mates with the pressure plate in this utility model.

[0028] Figure 12 This utility model Figure 4 A magnified schematic diagram of part C in the middle.

[0029] Figure 13 This is an assembly cross-sectional view of the slider in this utility model.

[0030] Figure 14 This is a top view of the lifting guide device on the slider in this utility model. Detailed Implementation

[0031] Examples, such as Figures 1 to 14 As shown, a tea-cutting machine includes a vibrating conveyor 6 and a conveyor trough 1 connected together. A conveyor belt 2, driven by a motor, is installed inside the conveyor trough 1. Multiple liftable rolling cutting devices 3 are spaced apart above the conveyor belt 2 along the tea-carrying direction. Each rolling cutting device 3 has a set of rolling cutting blades 32 with different spacing. A lifting mechanism 5 is installed on the conveyor trough to move the rolling cutting devices 3 up and down. A support plate 4, cooperating with the rolling cutting devices 3, is installed below the conveyor belt 2. The discharge end of the conveyor trough 1 has a tea drop outlet 11. The tea leaves are dispersed and evenly vibrated by the vibrating conveyor 6 and fall from the tea inlet 16 of the conveyor trough 1 onto the conveyor belt 2. The conveyor belt 2 then carries the tea leaves towards the tea outlet 11, where they are cut by the rolling cutting devices 3. Simultaneously, the support plate 4 supports the conveyor belt 2 while the rolling cutting devices 3 are cutting the tea.

[0032] Specifically, the discharge end of the vibrating conveyor 6 is located above the feed end of the conveying trough 1, and the width of the vibrating conveyor 6 is adapted to the width of the conveyor belt 2. The vibrating conveyor 6 includes a fixed base 61 and a vibrating trough 62 disposed above the fixed base 61. A set of leaf springs 63 are connected between the fixed base 61 and the vibrating trough 62. A vibrating motor 64 is disposed on the fixed base 61, and a cam 65 is connected to the output end of the vibrating motor 64. A connecting rod 66 is hinged to the cam 65, and the other end of the connecting rod 66 is hinged to the bottom of the vibrating trough 62. The vibrating motor 64 drives the cam 65 to rotate, which in turn drives the vibrating trough 62 through the connecting rod 66 on the cam 65 to achieve vibratory feeding. By using vibratory feeding, the tea leaves are dispersed and evenly distributed, allowing them to fall evenly onto the conveyor belt 2.

[0033] To achieve rolling cut, the rolling cut device 3 includes a cutter clamping roller 31 rotatably and horizontally mounted on the conveyor trough 1, and a set of rolling cutter blades 32 evenly arranged on the circumference of the cutter clamping roller 31, with the rolling cutter blades 32 parallel to the axis of the cutter clamping roller 31. The rolling cut device 3 also includes a rolling cutter motor 34 that drives the cutter clamping roller 31 to rotate. The rolling cutter motor 34 drives the cutter clamping roller 31 to rotate, and the tea leaves on the conveyor belt 2 are cut by the blade tips 321 of the rolling cutter blades 32.

[0034] For ease of assembly, cutter fixing discs 33 are respectively fitted at both ends of the cutter clamping roller 31. A set of cutter fixing grooves 331 are evenly spaced around the axis of the cutter clamping roller 31 on each cutter fixing disc 33. The spacing of the cutter fixing grooves 331 on each rolling cutting device 3 is different, resulting in different spacing of the rolling cutting blades 32 installed on the cutter fixing grooves 331 on each rolling cutting device 3. Therefore, the length of the tea leaves cut by each rolling cutting device 3 will also be different. The rolling cutting blades 32 can be fixed in the cutter fixing grooves 331 by spot welding; when maintenance or replacement is needed, the weld points can be cut off. Alternatively, the rolling cutting blades 32 can be fixed in the cutter fixing grooves 331 by the cooperation of the pressure plate 35 and the locking bolts 36. Figures 8 to 10 As shown, the outer walls of the two cutter fixing discs 33 are provided with annular grooves 332 that communicate with the cutter fixing grooves 331, and the annular grooves 332 do not penetrate the cutter fixing discs 33. Annular pressure plates 35 are embedded in the annular grooves 332. Both ends of the rotary cutting blades 32 are provided with slots 322 that are adapted to the width of the pressure plates 35. A set of countersunk holes 351 are provided on the pressure plates 35. Locking bolts 36 are provided in the countersunk holes 351. Locking threaded holes 333 that are adapted to the locking bolts 36 are provided on the cutter fixing discs 33.

[0035] To prevent the tip 321 of the rotary cutting blade 32 from cutting the conveyor belt 2, a rotary cutting gap A is left between the tip 321 of the rotary cutting blade 32 and the conveyor belt 2 when the tip 321 is at its lowest point. The rotary cutting gap A is 1 to 2 mm. Since dry tea leaves are very brittle, the tea leaves can be cut when the tip 321 acts on them without cutting through them. Therefore, leaving a rotary cutting gap A will not affect the rotary cutting blade 32 from cutting the tea leaves.

[0036] To prevent tea leaves from falling out from the joint between the inner walls of the conveyor belt 2 and the conveyor trough 1, tea leaf baffles 7 are provided on the inner walls of the two sides of the conveyor trough 1 and above the conveyor belt 2.

[0037] To achieve the lifting and lowering of the rolling cutting device, the lifting mechanism 5 includes two sliding blocks 51 sleeved on both ends of the cutter clamping roller 31 and capable of being lifted and lowered. Sliding block clearance holes 13 are provided on both side walls of the conveying trough 1. The two sliding blocks 51 are provided with pivot holes 511 adapted to the cutter clamping roller 31, and bearings 8 are also provided between the pivot holes 511 and the cutter clamping roller 31. The rolling cutting motor 34 is fixed to the sliding blocks 51 via a rolling cutting motor bracket 512. A lifting drive device 52 is provided on the conveying trough 1 to drive the two sliding blocks 51 to rise and fall. A lifting guide device 53 is also provided on the two sliding blocks 51.

[0038] To ensure the cutter clamping roller 31 remains horizontal, the lifting drive device 52 is a worm gear lift, including a worm gear box 521 fixed to the two side walls of the conveying trough 1 and located above the slider 51 via a worm gear box bracket 17. A lifting lead screw 522, with its end fixed to the slider 51, is mounted on the worm gear box 521. The lifting drive device 52 also includes a linkage worm 523 penetrating both worm gear boxes 521. One end of the linkage worm 523 is connected to a worm motor 524 fixed to the conveying trough 1. The worm motor 524 is fixed to the worm gear box bracket 17 via a worm motor bracket 18. It should be noted that this worm gear lift is existing technology, and its structure and principle will not be described in detail here. In order to fix the end of the lifting screw 522 to the slider 51, a fixing block 512 is horizontally provided at the upper end of the slider 51, and a gap is left between the fixing block 512 and the slider 51. The fixing block 512 is provided with a screw through hole 5121. Locking nuts 525 are respectively provided at the upper and lower ends of the lifting screw 522 located at the fixing block 512. By tightening the locking nuts 525, the lower end of the lifting screw 522 is fixed to the slider 51.

[0039] To ensure that the slider moves up and down in a straight line, the lifting guide device 53 includes a guide groove 531 on the slider 51 and a guide bar 532 on the conveying groove 1 that is adapted to the guide groove 531. The guide bar 532 is fixed by the upright plate 16.

[0040] The working principle of the lifting mechanism 5 is as follows: the worm motor 524 drives the linkage worm 523 to rotate, and the linkage worm 523 drives the two lifting screws 522 to rise and fall synchronously through the worm gear box 521. The lifting screws 522 do not rotate, and the two lifting screws 522 drive the two sliders 51 to rise and fall synchronously. During the rising and falling of the sliders 51, the guide strip 531 and the guide groove 532 cooperate to ensure that the two sliders 51 rise and fall in a straight line. The lifting mechanism 5 can ensure that the two ends of the cutter clamping roller 31 rise and fall synchronously during the lifting process, maintain a horizontal state, and prevent the two ends of the cutter clamping roller 31 from tilting at different heights after the lifting. In addition, the worm gear lifting machine has a self-locking function, which can ensure that the cutter clamping roller 31 will not shift up or down after it is in place when cutting tea.

[0041] This invention allows for the selection of one of the rolling cutting devices 3 for tea cutting according to size requirements. The lifting mechanism 5 lowers this device 3 to the working height for cutting, while the remaining rolling cutting devices 3 are raised away from the conveyor belt 2 and tea leaves by the lifting mechanism 5, allowing the tea leaves on the conveyor belt to pass smoothly. Alternatively, this invention can use the lifting mechanism 5 to raise all the rolling cutting devices 3 away from the conveyor belt 2 and tea leaves, effectively using them as a single conveyor for transporting tea leaves and other materials. This invention can cut tea leaves of different sizes and can also be used for transporting materials, making it a multi-purpose machine.

[0042] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A tea-cutting machine, characterized in that: It includes a conveying trough (1), a conveyor belt (2) set in the conveying trough (1), a tea outlet (11) set at one end of the conveying trough (1), a rolling cutting device (3) set above the conveyor belt (2), and a support plate (4) that cooperates with the rolling cutting device (3) set below the conveyor belt (2). The rolling cutting device (3) includes a cutter clamping roller (31) rotatably mounted on the conveying trough (1) and a set of rolling cutting blades (32) evenly arranged in the circumferential direction of the cutter clamping roller (31). A rolling cutting gap (A) is left between the rolling cutting blades (32) and the conveyor belt (2). The rolling cutting device (3) also includes a rolling cutting motor (34) that drives the cutter clamping roller (31) to rotate.

2. The tea-cutting machine as described in claim 1, characterized in that: The cutter clamping roller (31) is provided with cutter fixing disks (33) at both ends, and a set of cutter fixing grooves (331) are evenly spaced around the axis of the cutter clamping roller (31) on the cutter fixing disks (33).

3. The tea-cutting machine as described in claim 1, characterized in that: The rolling gap (A) is 1 to 2 mm.

4. The tea-cutting machine as described in claim 1, characterized in that: The conveying trough (1) is provided with a lifting mechanism (5) for driving the rolling cutting device (3) to move up and down.

5. The tea-cutting machine as described in claim 4, characterized in that: The lifting mechanism (5) includes two sliders (51) sleeved on both ends of the cutter clamping roller (31) and capable of being lifted and lowered. The two sliders (51) are provided with rotating shaft holes (511) adapted to the cutter clamping roller (31). The conveying groove (1) is provided with a lifting drive device (52) that drives the two sliders (51) to lift and lower. The two sliders (51) are also provided with a lifting guide device (53).

6. The tea-cutting machine as described in claim 5, characterized in that: The lifting drive device (52) is a worm gear lift, including a worm gear box (521) fixed on both sides of the conveying groove (1) and located above the slider (51). The worm gear box (521) is provided with a lifting screw (522) whose end is fixed on the slider (51). The lifting drive device (52) also includes a linkage worm (523) that passes through the two worm gear boxes (521). One end of the linkage worm (523) is connected to a worm motor (524) fixed on the conveying groove (1).

7. The tea-cutting machine as described in claim 5, characterized in that: The lifting guide device (53) includes a guide groove (531) disposed on the slider (51) and a guide bar (532) disposed on the conveying groove (1) and adapted to the guide groove (531).

8. The tea-cutting machine as described in claim 4, characterized in that: Multiple rolling cutting devices (3) are spaced apart above the conveyor belt (2) along the tea conveying direction, and the rolling cutting blades (32) on each rolling cutting device (3) have different spacing.

9. The tea-cutting machine as described in claim 1, characterized in that: A vibrating conveyor (6) is connected to the feed end of the conveying trough (1). The vibrating conveyor (6) includes a fixed base (61) and a vibrating trough (62) above the fixed base (61). A set of leaf springs (63) is connected between the fixed base (61) and the vibrating trough (62). A vibrating motor (64) is provided on the fixed base (61). A cam (65) is connected to the output end of the vibrating motor (64). A connecting rod (66) is hinged on the cam (65). The other end of the connecting rod (66) is hinged to the bottom of the vibrating trough (62).

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