Discharging mechanism of tea pressing forming machine

Abstract

A discharging mechanism of a tea leaf pressing forming machine comprises a machine frame, a horizontally-arranged conveying belt is arranged on the machine frame, a rolling unit used for flattening tea leaves on the belt face of the conveying belt is arranged above the conveying belt, and a gap-shaped channel for the tea leaves to pass through is reserved between the rolling unit and the belt face of the conveying belt. A cleaning brush is arranged on the conveying path of the conveying belt and located at the downstream position of the rolling unit, the cleaning brush is located on the side of the conveying belt, and the lower end face of the cleaning brush and the belt face of the conveying belt are adjacently arranged in the plumb bob direction. The driving unit drives the cleaning brush to move in the belt width direction of the conveying belt and pushes and sweeps the tea leaves on the belt face of the conveying belt till the tea leaves are separated from the belt face of the conveying belt, the flattened tea leaves can be effectively peeled off from the conveying belt, and the situation that the tea leaves are attached to the conveying belt and continue to rotate along with the conveying belt is avoided. And the tea leaves can be effectively collected after being rolled.

Description

Technical Field

[0001] The invention patent relates to tea processing equipment, specifically to a feeding mechanism of a tea pressing and molding machine. Background Art

[0002] Taiping Houkui is one of the traditional famous teas in China. Its appearance is two leaves holding buds, flat and straight. Its main processing techniques include killing green tea, pressing and forming (commonly known as pinching tips) and drying. Since the pinching tip operation in the traditional process is to first place each tea leaf after killing green tea on the cloth leaf frame in a spacing manner, then cover the tea leaves with cotton cloth, and then use a pressing roller to roll the cotton cloth to achieve the tea leaves flattened into shape, pressing and forming is the main reason that limits the production capacity of Taiping Houkui. At present, in the field of Houkui forming, there are some mechanized pressing and forming equipment to increase production capacity.

[0003] The technical solution disclosed in the patent document entitled "A Taiping Houkui Pressing and Forming Mechanism" (publication number CN117814328A) includes a frame, a group of bottom support conveyor belts arranged at intervals on the frame, a left conveyor belt and a right conveyor belt are arranged above each bottom support conveyor belt, and a pressing and forming device for pressing tea leaves is arranged on the line where the tea leaves are driven by the bottom support conveyor belt; a conical feed trough is arranged at the feed end of the bottom support conveyor belt, and a tea straightening machine is arranged at the feed end of the conical feed trough.

[0004] The technical solution disclosed in the patent document entitled "A Taiping Houkui Rapid Prototyping Machine" (publication number CN117063984A) includes a tea conveyor belt, a straightening mechanism arranged above the tea conveyor belt, a longitudinal forming mechanism for rolling the tea leaves along the length direction of the tea leaves, and a transverse forming mechanism for rolling the tea leaves along the width direction of the tea leaves; the straightening mechanism includes a swing frame, a group of straightening grooves arranged on the swing frame, the straightening grooves include a symmetrically arranged left half groove plate and a right half groove plate, and a flipping mechanism is also provided to drive the left half groove plate and the right half groove plate to flip so that the bottoms of the left half groove plate and the right half groove plate are separated.

[0005] The technical solution disclosed in the patent document entitled "A Taiping Houkui Shaping Machine" (publication number CN115624074A) includes a straightening mechanism for tightening and straightening the tea leaves after withering, and a pressing and molding mechanism connected to the straightening mechanism to press and mold the tea leaves; the straightening mechanism includes an inclined swing frame, and a group of straightening grooves arranged on the swing frame along the longitudinal direction; the pressing and molding mechanism includes a frame, a rotary conveyor belt arranged on the frame, and a group of fixed partition plates and a group of movable baffles are arranged on the frame; a pressing device is also arranged on the rotary conveyor belt, and a supporting bottom plate cooperating with the pressing device is also arranged under the rotary conveyor belt; the pressing device includes a longitudinal pressing device for pressing the tea leaves along the longitudinal direction and a transverse pressing device for pressing the tea leaves along the transverse direction.

[0006] In the above technical solution, tea leaves are transported by a conveyor belt, and a rolling unit composed of a pressure wheel or a pressure roller is arranged above the conveyor belt. The rolling unit rolls on the conveyor belt to flatten the tea leaves on the conveyor belt. When the tea leaves are flattened, the juice inside the tea leaves will be squeezed out. Since the juice has a certain viscosity and the weight of a single tea leaf is very small, the juice will make the flattened tea leaves easily adhere to the belt surface of the conveyor belt after it dries slightly. Even if the tea leaves are transported to the end of the conveyor belt, the tea leaves cannot fall off the conveyor belt normally, thereby affecting the subsequent collection of the tea leaves. Summary of the invention

[0007] The invention provides a feeding mechanism of a tea pressing and forming machine, which can separate the flattened tea leaves from a conveyor belt to facilitate subsequent collection and processing.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted is: a feeding mechanism of a tea pressing and forming machine, including a frame, a flat conveyor belt is arranged on the frame, a rolling unit for flattening the tea leaves on its belt surface is arranged above the conveyor belt, a gap-shaped passage is left between the rolling unit and the belt surface of the conveyor belt for the tea leaves to pass through, a cleaning brush is arranged on the conveying path of the conveyor belt and at a downstream position of the rolling unit, the cleaning brush is located on the side of the conveyor belt, and the lower end face of the cleaning brush is arranged closely to the belt surface of the conveyor belt in the plumb direction, and the driving unit drives the cleaning brush to move along the width direction of the conveyor belt and push and sweep the tea leaves on the belt surface of the conveyor belt until they are separated from the belt surface of the conveyor belt.

[0009] Compared with the prior art, the technical effect of the present invention is as follows: a cleaning brush is arranged on the side of the conveyor belt at the downstream position of the rolling unit, and the driving unit can drive the cleaning brush to move along the bandwidth direction of the conveyor belt and push and sweep the tea leaves on the belt surface of the conveyor belt to the belt surface that is separated from the conveyor belt, so that the flattened tea leaves can be effectively peeled off from the conveyor belt, avoiding the situation where the tea leaves stick to the conveyor belt and continue to rotate with the conveyor belt, thereby ensuring that the tea leaves can be effectively collected after rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall three-dimensional appearance of the present invention;

[0011] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0012] Figure 3 It is a schematic diagram of a movable frame and a driving unit;

[0013] Figure 4 for Figure 3 A magnified view of the M part;

[0014] Figure 5for Figure 3 Schematic diagram of the local structure;

[0015] Figure 6 It is a schematic diagram of the bottom structure of the guide plate;

[0016] Figure 7 It is a schematic diagram of the relative position between the screen frame, the conveyor belt and the guide plate;

[0017] Figure 8 A schematic diagram of the internal chamber formed by the guide plates on both sides of each conveyor belt;

[0018] Fig. 9 This is a schematic diagram of the falling path of tea leaves. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-9 And related contents, the present invention is further described in detail:

[0020] A feeding mechanism of a tea pressing and forming machine comprises a frame 10, on which a horizontal conveyor belt 20 is arranged, and above the conveyor belt 20 a rolling unit 30 for flattening tea leaves on its belt surface is arranged, and a slit-shaped passage is left between the rolling unit 30 and the belt surface of the conveyor belt 20 for the tea leaves to pass through, and a cleaning brush 40 is arranged on the conveying path of the conveyor belt 20 and at a downstream position of the rolling unit 30, and the cleaning brush 40 is located beside the conveyor belt 20, and the lower end surface of the cleaning brush 40 is arranged adjacent to the belt surface of the conveyor belt 20 in the plumb direction, and a driving unit 50 drives the cleaning brush 40 to move along the width direction of the conveyor belt 20 and push and sweep the tea leaves on the belt surface of the conveyor belt 20 until the tea leaves are separated from the belt surface of the conveyor belt 20.

[0021] In the above technical solution, based on the tea leaf flattening and forming technology disclosed in the prior art, a brief introduction to the tea leaf flattening and forming process is given here, that is, a single tea leaf is placed on the conveyor belt 20 from the upstream position of the rolling unit 30, and the tea leaf is conveyed downstream along the conveyor belt 20. When the tea leaf is conveyed to the gap-shaped passage between the rolling unit 30 and the belt surface of the conveyor belt 20, the wheel circumference of the rolling unit 30 cooperates with the conveyor belt 20 to perform a rolling operation on the tea leaf, thereby flattening the tea leaf. The flattened tea leaves continue to be transported downstream along the conveyor belt 20 until the tea leaves are transported to the position of the cleaning brush 40, and the driving unit 50 can drive the cleaning brush 40 to move along the bandwidth direction of the conveyor belt 20, driving the cleaning brush 40 to push and sweep the tea leaves on the belt surface of the conveyor belt 20 until they are separated from the belt surface of the conveyor belt 20 (the tea leaves pushed and swept fall from the other side of the conveyor belt 20), so that the flattened tea leaves can be effectively peeled off from the conveyor belt 20, avoiding the situation where the tea leaves stick to the conveyor belt 20 and continue to rotate with the conveyor belt 20, thereby ensuring that the tea leaves can be effectively collected after rolling.

[0022] It should be noted that the lower end surface of the cleaning brush 40 can be slightly lower than the belt surface of the conveyor belt 20 , and as long as it is arranged closely to the belt surface of the conveyor belt 20 , it can push and sweep the tea leaves on the conveyor belt 20 .

[0023] As a preferred solution, the conveyor belt 20 is a narrow belt (narrow width) and a plurality of conveyor belts are arranged in parallel and at intervals in the same horizontal plane. A cleaning brush 40 is arranged on the side of each conveyor belt 20. The upper ends of the cleaning brushes 40 are connected to the movable frame 60. The driving unit 50 drives the movable frame 60 to move along the width direction of the conveyor belt 20 and drives the cleaning brushes 40 to push and sweep the tea leaves on the belt surface of each conveyor belt 20 to the belt surface that is separated from the conveyor belt 20. In this solution, in order to improve the processing efficiency of the tea flattening operation, multiple conveyor belts 20 are arranged, and multiple cleaning brushes 40 are also arranged accordingly. Workers can place tea leaves on each conveyor belt 20. After the tea leaves on each conveyor belt 20 are rolled by the rolling unit 30, they are uniformly transported downstream. Since the cleaning brushes 40 are connected to the movable frame 60, the driving unit 50 only needs to drive the movable frame 60 to move along the width direction of the conveyor belt 20, so as to drive the cleaning brushes 40 to respectively sweep the tea leaves on the surface of each conveyor belt 20 until the tea leaves fall from the side of the conveyor belt 20, thereby improving the tea leaves processing efficiency.

[0024] It should be noted that a corresponding rolling unit 30 may be separately provided for each conveyor belt 20 , or an integral rolling unit 30 with a larger span may be directly provided for all conveyor belts 20 to synchronously roll the tea leaves on all conveyor belts 20 .

[0025] As a preferred solution, Figure 3 - Fig. 9 As shown, the conveyor belt 20 is provided with guide plates 70 at both sides in the bandwidth direction thereof, and the guide plates 70 include an upper plate body 71 with a vertically arranged plate surface, the plate length direction of the upper plate body 71 is consistent with the conveying direction of the conveyor belt 20, and a channel A for the tea leaves to fall is reserved between the plate surface of the upper plate body 71 and the belt edge of the conveyor belt 20, the upper plate body 71 and the cleaning brush 40 have an overlapping section in the conveying direction of the conveyor belt 20, and a lower plate body 72 with an inclined plate surface is arranged along the lower plate edge of the upper plate body 71, and the lower plate edges of the lower plate bodies 72 on both sides of the same conveyor belt 20 are close to each other to form a closed shape, and the two ends of the upper plate body 71 in the plate length direction are connected to the fixed rods 73 on the frame 10.

[0026] In this scheme, if Fig. 9As shown, a set of guide plates 70 are added at the position where the cleaning brush 40 is arranged on the side of the conveyor belt 20, so that the tea leaves cleaned can be constrained and guided to the designated position for discharge. When the driving unit 50 drives the cleaning brush 40 to move toward the other side of the conveyor belt 20 along the width direction of the conveyor belt 20, the lower end of the cleaning brush 40 pushes and sweeps the tea leaves on the conveyor belt 20 toward the edge of the conveyor belt 20. When the tea leaves leave the belt surface of the conveyor belt 20, the tea leaves will fall into the channel A between the upper plate body 71 and the conveyor belt 20, and further, under the guidance of the lower plate body 72, the tea leaves will be discharged from the closed outlet formed by the lower plate edges of the two lower plates 72 below the conveyor belt 20. This setting can effectively separate the tea leaves cleaned from each conveyor belt 20 and guide them to the designated position for collection.

[0027] It should be noted that in the prior art, a drying net is generally used to receive the flattened tea leaves. In the subsequent drying operation, the Houkui tea leaves need to be arranged separately. With the setting of the guide plate 70, the flattened tea leaves will not fall randomly when being swept down from the conveyor belt 20 and will not be stacked with the tea leaves swept down from the adjacent conveyor belt 20, thereby avoiding unnecessary subsequent manual separation operations.

[0028] Furthermore, combined with Figure 3 As shown, the cleaning brush 40 is in the shape of a strip as a whole and its length direction is consistent with the conveying direction of the conveyor belt 20. The two ends of the upper plate body 71 in the conveying direction of the conveyor belt 20 extend to the end positions of the cleaning brush 40 respectively. The cleaning brush 40 has a relatively long overall length on the conveying path of the conveyor belt 20. When multiple tea leaves are conveyed to the relative range of the cleaning brush 40, the cleaning brush 40 can be controlled to perform a push sweep, thereby pushing and sweeping multiple tea leaves on the conveyor belt 20 at the same time, avoiding the cleaning brush 40 from pushing and sweeping at a high frequency and increasing energy consumption. At the same time, the two ends of the upper plate body 71 are extended to the end positions of the cleaning brush 40 to ensure that the tea leaves pushed and swept down by various parts of the cleaning brush 40 in the conveying direction of the conveyor belt 20 can be guided into the channel A.

[0029] As a preferred solution, Figure 5 and Fig. 9As shown, a flat support plate 74 is arranged below the belt body portion of the conveyor belt 20 opposite to the cleaning brush 40 in the belt width direction, the length direction of the support plate 74 is consistent with the conveying direction of the conveyor belt 20, the plate end of the support plate 74 is connected to the fixing rod 73, and a limiting groove 741 is provided at the position where the upper plate surface of the support plate 74 is directly opposite to the belt body of the conveyor belt 20, the groove length direction of the limiting groove 741 is consistent with the conveying direction of the conveyor belt 20, the belt body of the conveyor belt 20 opposite to the limiting groove 741 is embedded in the limiting groove 741, the groove depth of the limiting groove 741 is less than the belt body thickness of the conveyor belt 20, and the plate edge of the support plate 74 is arranged parallel to the upper plate edge of the upper plate body 71 in the plate width direction to reserve a channel A for the tea leaves to fall. In this scheme, the support plate 74 is used to support the belt body portion of the conveyor belt 20 opposite to the cleaning brush 40, and the limiting groove 741 on the upper plate surface of the support plate 74 can limit the displacement of the belt body of the conveyor belt 20 in the belt width direction. When the cleaning brush 40 pushes and sweeps the tea leaves along the bandwidth direction of the conveyor belt 20, even if there is a certain interference between the belt body of the conveyor belt 20 and the lower end part of the cleaning brush 40, when the cleaning brush 40 pushes the conveyor belt 20 in the bandwidth direction, the belt body of the conveyor belt 20 will not tilt or twist, and the belt body will maintain a flat and straight posture, thereby ensuring that the tea leaves on the conveyor belt 20 fall into the channel A normally.

[0030] As a preferred solution, Figure 5 and Fig. 9 As shown, the upper end of the cleaning brush 40 is connected to the movable frame 60 through a connecting plate 41, the plate surface of the connecting plate 41 is arranged vertically as a whole and the plate length direction is consistent with the conveying direction of the conveyor belt 20, and a connecting head 411 is arranged at the lower plate edge of the connecting plate 41, the connecting head 411 is in the shape of an elongated strip and extends along the plate length direction of the connecting plate 41, and the lower end face of the connecting head 411 is provided with a closing-shaped mounting groove 4111 with a notch facing downward and the groove length direction being consistent with the plate length direction of the connecting plate 41, and the groove cavity of the mounting groove 4111 passes through the end face of the connecting head 411 at least at one end in the groove length direction, and the upper end of the cleaning brush 40 is connected to a mounting strip 42 whose cross-sectional shape matches the groove cavity shape of the mounting groove 4111, and the mounting strip 42 is embedded in the mounting groove 4111, and the mounting strip 42 forms a guiding sliding fit with the mounting groove 4111 in the groove length direction of the mounting groove 4111. This solution takes into account that the cleaning brush 40 is a wearable part. In order to facilitate the replacement of the cleaning brush 40, a mounting strip 42 is provided at the upper end of the cleaning brush 40. The mounting strip 42 can be pulled out from the open end of the mounting groove 4111 on the connecting head 411 in the groove length direction, and then the mounting strip 42 of the new cleaning brush 40 is inserted into the mounting groove 4111, thereby realizing quick replacement of the designated cleaning brush 40 and facilitating subsequent inspection and maintenance operations.

[0031] It should be noted that the lower end of the mounting groove 4111 is in a closed shape and the cross-sectional shape of the mounting strip 42 is consistent with the shape of the groove cavity of the mounting groove 4111. The mounting strip 42 will not fall downward from the groove of the mounting groove 4111. At the same time, it also avoids displacement of the mounting strip 42 in the groove width direction, thereby ensuring the stability of the cleaning brush 40 relative to the movable frame 60 in the bandwidth direction of the conveyor belt 20.

[0032] As a preferred solution, Figure 3 As shown, the movable frame 60 includes slide bars 61 which are parallel to each other and located in the same horizontal plane. The length direction of the slide bars 61 is located in the horizontal direction perpendicular to the conveying direction of the conveyor belt 20. The two slide bars 61 are connected by a connecting rod 62. The two ends of the slide bars 61 are respectively inserted through the through holes 111 on the two vertical plates 11 on the opposite sides of the frame 10. The upper end of the cleaning brush 40 is connected to the slide bars 61 by the connecting plate 41. The movable frame 60 is raised by the vertical plate 11. Under the constraint of the through holes 111 on the vertical plate 11, the slide bars 61 can be displaced in the bandwidth direction of the conveyor belt 20, so that the cleaning brush 40 connected to the slide bars 61 through the connecting plate 41 can be displaced in the bandwidth direction of the conveyor belt 20 with the movable frame 60. The two slide bars 61 are connected by the connecting rod 62 to form an integral structure, which prevents the slide bars 61 from rotating themselves and causing the cleaning brush 40 to rotate in the plumb line, and also ensures the overall connection stability of the strip-shaped connecting plate 41 and the cleaning brush 40.

[0033] Furthermore, the upper ends of the two upright plates 11 are connected to the mounting platform 12, and the driving unit 50 includes a motor 51 disposed on the mounting platform 12, the output shaft of the motor 51 is connected to a gear 52, and a rack 53 is disposed on the connecting rod 62, the length direction of the rack 53 is consistent with the rod length direction of the slide rod 61, and the teeth on the rack 53 are meshed with the gear 52. In this solution, the motor 51 drives the gear 52 to rotate, which can force the rack 53 connected to the connecting rod 62 to translate in the direction of the width of the conveyor belt 20, thereby causing the integral movable frame 60 composed of the connecting rod 62 and the slide rod 61 to translate in the direction of the width of the conveyor belt 20, so as to drive the cleaning brush 40 to push and sweep the tea leaves on the conveyor belt 20 or reset it.

[0034] As a preferred solution, Figure 3 , Figure 4 as well as Figure 7As shown, a support wheel 63 is provided on the outer plate surface of the vertical plate 11 at a position opposite to the upper and lower positions of the sliding rod 61. The support wheel 63 is located below the sliding rod 61 and the wheel core direction of the support wheel 63 is located in the horizontal direction perpendicular to the length direction of the sliding rod 61. An arc groove 631 is provided on the wheel circumference of the support wheel 63 along its circumferential direction. The rod body of the sliding rod 61 is located in the arc groove 631 and a guide rolling fit is formed between the two. The wheel axle of the support wheel 63 forms a rotation fit with the bracket 64 on the vertical plate 11 through the bearing seat. In this solution, the support wheel 63 is provided on the vertical plate 11 to support the rod body of the sliding rod 61, rather than the hole wall of the through hole 111 supporting the rod body of the sliding rod 61. This can improve the smoothness of the displacement of the sliding rod 61 on the one hand, and avoid excessive scratching and wear between the sliding rod 61 and the hole wall of the through hole 111 and generate noise on the other hand.

[0035] It should be noted that the aperture of the through hole 111 is relatively large, and its hole wall does not contact the rod body of the sliding rod 61. The arc groove 631 of the support wheel 63 can constrain the rod body of the sliding rod 61, and can limit the axial displacement of the sliding rod 61 in the axial direction of the support wheel 63, thereby preventing the axial deviation of the rod body of the sliding rod 61 from scratching the hole wall of the through hole 111.

[0036] In addition, combined Figure 1 , Figure 2 as well as Figure 7 As shown, in order to collect the tea leaves pushed and swept down by the cleaning brush 40, a conveyor belt 80 with a flat belt surface is provided on the frame 10 below the conveyor belt 20. The conveying direction of the conveyor belt 80 is arranged crosswise with the conveying direction of the conveyor belt 20 (preferably perpendicular to each other). A mesh frame 81 is placed on the conveyor belt 80. When the mesh frame 81 is conveyed to the position below the cleaning brush 40 with the conveyor belt 80, the mesh frame 81 is used to receive the tea leaves pushed and swept down by the cleaning brush 40. Workers can place an empty mesh frame 81 at one end of the conveyor belt 80, and the conveyor belt 80 will transport it to the position below the cleaning brush 40 to receive the tea leaves pushed and swept down by the cleaning brush 40. Subsequently, the mesh frame 81 receiving the tea leaves is placed in the drying equipment to facilitate the drying of the tea leaves.

[0037] It should be noted that when the tea leaves on the conveyor belt 20 at the downstream end of the cleaning brush 40 are pushed and swept by the cleaning brush 40, if a single conveyor belt 20 is used to roll and convey the tea leaves, the mesh frame 81 below the cleaning brush 40 will be automatically conveyed downstream by the conveyor belt 80 for a distance after each push and sweep by the cleaning brush 40, so that the tea leaves falling from the subsequent conveyor belt 20 can be separated from the tea leaves on the mesh frame 81, thereby avoiding the accumulation of tea leaves. When the tea leaves on the mesh frame 81 are basically covered, the mesh frame 81 will naturally be completely removed from the area below the conveyor belt 20, and then the next mesh frame 81 will be transported by the conveyor belt 80 to the designated position to receive the tea leaves that are about to fall from the conveyor belt 20; if multiple conveyor belts 20 are used to roll and transport the tea leaves, the mesh frame 81 below the cleaning brush 40 can be directly covered with tea leaves after the cleaning brush 40 pushes and sweeps once, and then the mesh frame 81 can be transported away, and then a new mesh frame 81 will be transported to the area below the conveyor belt 20 to continue to receive the tea leaves that are about to fall. As for the actual situation, which transport method the mesh frame 81 uses depends on the number of conveyor belts 20 and the size of the mesh frame 81.

Claims

1. A feeding mechanism of a tea pressing and forming machine, comprising a frame (10), a flat conveyor belt (20) is arranged on the frame (10), a rolling unit (30) is arranged above the conveyor belt (20) for flattening tea leaves on the belt surface, a gap-shaped passage is left between the rolling unit (30) and the belt surface of the conveyor belt (20) for the tea leaves to pass through, and the characteristics are: A cleaning brush (40) is arranged on the conveying path of the conveyor belt (20) and at a position downstream of the rolling unit (30). The cleaning brush (40) is located beside the conveyor belt (20). The lower end surface of the cleaning brush (40) is arranged closely to the belt surface of the conveyor belt (20) in the plumb direction. The driving unit (50) drives the cleaning brush (40) to move along the belt width direction of the conveyor belt (20) and push and sweep the tea leaves on the belt surface of the conveyor belt (20) until they are separated from the belt surface of the conveyor belt (20).

2. The unloading mechanism of the tea pressing and forming machine according to claim 1 is characterized in that: The conveyor belt (20) is a narrow belt and a plurality of conveyor belts are arranged in parallel and at intervals in the same horizontal plane. A cleaning brush (40) is arranged on the side of each conveyor belt (20). The upper ends of the cleaning brushes (40) are connected to a movable frame (60). The driving unit (50) drives the movable frame (60) to move along the width direction of the conveyor belt (20) and drives the cleaning brushes (40) to push and sweep the tea leaves on the belt surface of each conveyor belt (20) until the tea leaves are separated from the belt surface of the conveyor belt (20).

3. The unloading mechanism of the tea pressing and forming machine according to claim 2 is characterized in that: The conveyor belt (20) is provided with guide plates (70) at both sides in the width direction thereof. The guide plates (70) include an upper plate body (71) with a plate surface arranged vertically. The plate length direction of the upper plate body (71) is consistent with the conveying direction of the conveyor belt (20), and a channel (A) for tea leaves to fall is reserved between the plate surface of the upper plate body (71) and the belt edge of the conveyor belt (20). The upper plate body (71) and the cleaning brush (40) have an overlapping section in the conveying direction of the conveyor belt (20). A lower plate body (72) with an inclined plate surface is arranged along the lower plate edge of the upper plate body (71). The lower plate edges of the lower plate bodies (72) on both sides of the same conveyor belt (20) are close to each other to form a closed shape. The two ends of the upper plate body (71) in the plate length direction are connected to the fixing rods (73) on the frame (10).

4. The unloading mechanism of the tea pressing and forming machine according to claim 3 is characterized in that: The cleaning brush (40) is in the shape of a strip plate as a whole and its length direction is consistent with the conveying direction of the conveyor belt (20). Both ends of the upper plate body (71) in the conveying direction of the conveyor belt (20) extend to the end positions of the cleaning brush (40) respectively.

5. The unloading mechanism of the tea pressing and forming machine according to claim 3 or 4, characterized in that: A horizontal support plate (74) is arranged below the belt body portion of the conveyor belt (20) opposite to the cleaning brush (40) in the belt width direction thereof, the plate length direction of the support plate (74) is consistent with the conveying direction of the conveyor belt (20), the plate end of the support plate (74) is connected to the fixing rod (73), a limiting groove (741) is provided at a position where the upper plate surface of the support plate (74) is directly opposite to the belt body of the conveyor belt (20), the groove length direction of the limiting groove (741) is consistent with the conveying direction of the conveyor belt (20), the belt body of the conveyor belt (20) opposite to the limiting groove (741) above and below is embedded in the limiting groove (741), the groove depth of the limiting groove (741) is less than the belt body thickness of the conveyor belt (20), and the plate edge of the support plate (74) is arranged parallel to the upper plate edge of the upper plate body (71) in the plate width direction thereof to reserve a channel (A) for tea leaves to fall.

6. The unloading mechanism of the tea pressing and forming machine according to claim 4, characterized in that: The upper end of the cleaning brush (40) is connected to the movable frame (60) through a connecting plate (41); the plate surface of the connecting plate (41) is arranged vertically as a whole and the plate length direction is consistent with the conveying direction of the conveyor belt (20); a connecting head (411) is arranged at the lower plate edge of the connecting plate (41); the connecting head (411) is in the shape of a long strip and extends along the plate length direction of the connecting plate (41); a groove is opened on the lower end surface of the connecting head (411) and the groove length direction is consistent with the plate length direction of the connecting plate (41). A mounting groove (4111) is provided with a consistent closing shape, wherein at least one end of the groove cavity of the mounting groove (4111) passes through the end surface of the connector (411) in the groove length direction, and the upper end of the cleaning brush (40) is connected with a mounting strip (42) whose cross-sectional shape matches the groove cavity shape of the mounting groove (4111), and the mounting strip (42) is embedded in the mounting groove (4111), and the mounting strip (42) forms a guiding sliding fit with the mounting groove (4111) in the groove length direction of the mounting groove (4111).

7. The unloading mechanism of the tea pressing and forming machine according to claim 2 or 6, characterized in that: The movable frame (60) comprises sliding rods (61) which are parallel to each other and located in the same horizontal plane. The length direction of the sliding rods (61) is located in the horizontal direction perpendicular to the conveying direction of the conveyor belt (20). The two sliding rods (61) are connected by a connecting rod (62). The two ends of the sliding rod (61) are respectively inserted through the through holes (111) on the two vertical plates (11) on the opposite sides of the frame (10). The upper end of the cleaning brush (40) is connected to the sliding rod (61) by a connecting plate (41).

8. The unloading mechanism of the tea pressing and forming machine according to claim 7, characterized in that: The upper ends of the two upright plates (11) are commonly connected to a mounting platform (12); the driving unit (50) comprises a motor (51) arranged on the mounting platform (12); the output shaft of the motor (51) is connected to a gear (52); a rack (53) is arranged on the connecting rod (62); the length direction of the rack (53) is consistent with the length direction of the sliding rod (61); and the teeth on the rack (53) are meshed with the gear (52).

9. The unloading mechanism of the tea pressing and forming machine according to claim 7, characterized in that: A support wheel (63) is provided on the outer plate surface of the vertical plate (11) at a position opposite to the sliding rod (61) in the upper and lower directions. The support wheel (63) is located below the sliding rod (61) and the wheel core direction of the support wheel (63) is located in a horizontal direction perpendicular to the length direction of the sliding rod (61). An arc-shaped groove (631) is provided on the wheel circumference of the support wheel (63) along its circumferential direction. The rod body of the sliding rod (61) is located in the arc-shaped groove (631) and a guide rolling fit is formed therebetween. The wheel shaft of the support wheel (63) is rotationally matched with a bracket (64) on the vertical plate (11) through a bearing seat.

10. The unloading mechanism of the tea pressing and forming machine according to claim 1 or 2, characterized in that: A conveyor belt (80) with a flat belt surface is arranged on the frame (10) below the conveyor belt (20); the conveying direction of the conveyor belt (80) is arranged to cross the conveying direction of the conveyor belt (20); a mesh frame (81) is placed on the conveyor belt (80); when the mesh frame (81) is conveyed to a position below the cleaning brush (40) along with the conveyor belt (80), the mesh frame (81) is used to receive tea leaves pushed and swept down by the cleaning brush (40).

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