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] This utility model relates to tea processing equipment, specifically to a feeding mechanism for a tea pressing and forming machine. Background Technology

[0002] The main processing techniques for Taiping Houkui tea include fixation (withering), pressing and shaping (commonly known as pinching the tips), and drying. The traditional pinching process involves first placing each withered tea leaf at intervals on a cloth frame, then covering the tea leaves with cotton cloth, and finally rolling the cloth with rollers to flatten the tea leaves. This pressing and shaping process is the main reason limiting the production capacity of Taiping Houkui. Currently, some mechanized pressing and shaping equipment exists in the Houkui tea forming field to improve production capacity.

[0003] The patent document entitled "A Taiping Houkui Pressing and Forming Mechanism" (publication number CN117814328A) discloses a technical solution including a frame, a set of bottom support conveyor belts spaced apart on the frame, a left conveyor belt and a right conveyor belt above each bottom support conveyor belt, and a pressing and forming device for pressing the tea leaves on the path along which the bottom support conveyor belts drive the tea leaves; a conical feed trough is provided at the feed end of the bottom support conveyor belts, and a tea straightening machine is connected to the feed end of the conical feed trough.

[0004] The technical solution disclosed in the patent document entitled "A Rapid Forming Machine for Taiping Houkui Tea" (publication number CN117063984A) includes a tea conveyor belt, a straightening mechanism arranged sequentially above the tea conveyor belt, a longitudinal forming mechanism for rolling the tea along the length of the tea, and a transverse forming mechanism for rolling the tea along the width of the tea. The straightening mechanism includes a swing frame, a set of straightening grooves arranged on the swing frame, the straightening grooves including a left half groove plate and a right half groove plate arranged symmetrically, and a flipping mechanism that drives the left half groove plate and the right half groove plate to flip and separate the bottom of the left half groove plate and the right half groove plate.

[0005] The patent document entitled "A Shaping Machine for Taiping Houkui Tea" (publication number CN115624074A) discloses a straightening mechanism for tightening and straightening tea leaves after processing, and a pressing and forming mechanism that connects with the straightening mechanism to press and form the tea leaves. The straightening mechanism includes an inclined swing frame and a set of straightening grooves arranged longitudinally on the swing frame. The pressing and forming mechanism includes a frame and a rotary conveyor belt arranged on the frame. The frame is provided with a set of fixed partition plates and a set of movable baffles. A pressing device is also provided on the rotary conveyor belt, and a support base plate that cooperates with the pressing device is provided below the rotary conveyor belt. The pressing device includes a longitudinal pressing device for pressing the tea leaves longitudinally and a transverse pressing device for pressing the tea leaves transversely.

[0006] In the above technical solution, tea leaves are conveyed via a conveyor belt. A rolling unit, consisting of pressure rollers or rollers, is installed above the conveyor belt to flatten the tea leaves. During flattening, the juice inside the tea leaves is squeezed out. Because the juice is viscous and a single tea leaf is very light, the flattened tea leaves tend to stick to the conveyor belt surface after the juice dries slightly. Even when the tea leaves reach the end of the conveyor belt, they cannot detach properly, thus affecting subsequent tea collection. Summary of the Invention

[0007] This utility model provides a feeding mechanism for a tea pressing and forming machine, which can remove the flattened tea leaves from the conveyor belt for easy subsequent collection and processing.

[0008] To achieve the above objectives, the technical solution adopted is as follows: a feeding mechanism for a tea pressing and forming machine includes a frame, a horizontally placed conveyor belt on the frame, a rolling unit above the conveyor belt for flattening the tea leaves on its surface, a slit-like passage for the tea leaves to pass through between the rolling unit and the surface of the conveyor belt, a cleaning brush located downstream of the rolling unit on the conveyor belt's conveying path, the cleaning brush being located beside the conveyor belt, the lower end face of the cleaning brush being arranged adjacent to the surface of the conveyor belt in the vertical direction, and a driving unit driving the cleaning brush to move along the width direction of the conveyor belt and push the tea leaves on the surface of the conveyor belt to detach from the surface of the conveyor belt.

[0009] Compared with the prior art, the technical effect of this utility model is as follows: a cleaning brush is set on the side of the conveyor belt at the downstream position of the rolling unit. The driving unit can drive the cleaning brush to move along the width direction of the conveyor belt and push the tea leaves on the conveyor belt surface to detach from the conveyor belt surface. This can effectively peel the flattened tea leaves off the conveyor belt, avoid the situation where the tea leaves stick to the conveyor belt and continue to rotate with the conveyor belt, and ensure that the tea leaves can be effectively collected after rolling. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of this utility model;

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

[0012] Figure 3 This is a schematic diagram of the movable frame and drive unit;

[0013] Figure 4 for Figure 3 Enlarged view of part M in the image;

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

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

[0016] Figure 7 This is a schematic diagram showing the vertical relative positions of the wire frame, the conveyor belt, and the guide plate.

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

[0018] Figure 9 This is a schematic diagram of the path the tea leaves take as they fall. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-9 The present invention will be further described in detail below, including related content:

[0020] A feeding mechanism for a tea pressing and forming machine includes a frame 10, on which a horizontally placed conveyor belt 20 is mounted. Above the conveyor belt 20 is a rolling unit 30 for flattening the tea leaves on its surface. A slit-like passage for the tea leaves to pass through is left between the rolling unit 30 and the surface of the conveyor belt 20. A cleaning brush 40 is mounted on the conveying path of the conveyor belt 20 and downstream of the rolling unit 30. The cleaning brush 40 is located beside the conveyor belt 20, and its lower end face is arranged close to the surface of the conveyor belt 20 in the vertical direction. A driving unit 50 drives the cleaning brush 40 to move along the width direction of the conveyor belt 20 and pushes the tea leaves on the surface of the conveyor belt 20 until they are removed from the surface of the conveyor belt 20.

[0021] In the above technical solution, based on the publicly available tea flattening and forming technology, the tea flattening and forming process is briefly described below: 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 with the conveyor belt 20. When the tea leaf is conveyed into the slit-like passage between the rolling unit 30 and the conveyor belt 20, the circumferential surface of the rolling unit 30 and the conveyor belt 20 cooperate to perform a rolling operation on the tea leaf, thereby flattening the tea leaf. The flattened tea leaves continue to be conveyed downstream along the conveyor belt 20 until they reach the position of the cleaning brush 40. At this point, the drive unit 50 can drive the cleaning brush 40 to move along the width direction of the conveyor belt 20, causing the cleaning brush 40 to push the tea leaves on the surface of the conveyor belt 20 away from the surface of the conveyor belt 20 (the tea leaves that are pushed off fall from the other side of the conveyor belt 20). This effectively peels the flattened tea leaves off the conveyor belt 20, preventing the tea leaves from sticking to the conveyor belt 20 and continuing to rotate with the conveyor belt 20, thus ensuring that the tea leaves can be effectively collected after rolling.

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

[0023] As a preferred embodiment, the conveyor belts 20 are narrow belts (relatively narrow) and several are arranged parallel to each other on the same horizontal plane. Each conveyor belt 20 has a cleaning brush 40 on its side, and the upper ends of all cleaning brushes 40 are connected to a movable frame 60. The drive unit 50 drives the movable frame 60 to move along the width direction of the conveyor belt 20, causing each cleaning brush 40 to push and sweep the tea leaves on the surface of each conveyor belt 20 until they detach from the surface of the conveyor belt 20. In this embodiment, to improve the processing efficiency of the tea flattening operation, multiple conveyor belts 20 are provided, and correspondingly, multiple cleaning brushes 40 are also provided. Workers can place tea leaves on each conveyor belt 20, and after the tea leaves on each conveyor belt 20 are rolled by the rolling unit 30, they are uniformly conveyed downstream. Since all the cleaning brushes 40 are connected to the movable frame 60, the drive unit 50 only needs to drive the movable frame 60 to move along the width direction of the conveyor belt 20 to drive each cleaning brush 40 to push and sweep the tea leaves on the surface of each conveyor belt 20 until the tea leaves fall off the side of the conveyor belt 20, thus improving the processing efficiency of the tea leaves.

[0024] It should be noted that a separate rolling unit 30 can be set for each conveyor belt 20, or a single integrated rolling unit 30 with a larger span can be set for all conveyor belts 20 to roll the tea leaves on all conveyor belts 20 simultaneously.

[0025] As a preferred solution, combined with Figure 3 - Figure 9 As shown, guide plates 70 are provided on both sides of the conveyor belt 20 in the width direction. The guide plate 70 includes an upper plate 71 arranged vertically on the plate surface. The length direction of the upper plate 71 is consistent with the conveying direction of the conveyor belt 20, and a channel A for tea leaves to fall is left between the plate surface of the upper plate 71 and the edge of the conveyor belt 20. The upper plate 71 and the cleaning brush 40 have overlapping sections in the conveying direction of the conveyor belt 20. A lower plate 72 with an inclined plate surface is arranged along the lower edge of the upper plate 71. The lower edges of the lower plates 72 on both sides of the same conveyor belt 20 are brought together to form a constricted shape. The two ends of the upper plate 71 in the length direction are connected to the fixed rods 73 on the frame 10.

[0026] In this plan, such as Figure 9As shown, a set of guide plates 70 is added at the location where the cleaning brush 40 is set on the side of the conveyor belt 20, so that the swept tea leaves can be constrained and guided to a designated location for discharge. When the drive unit 50 drives the cleaning brush 40 to move along the width direction of the conveyor belt 20 towards the other side of the conveyor belt 20, the lower end of the cleaning brush 40 pushes the tea leaves on the conveyor belt 20 towards the belt edge. When the tea leaves detach from the belt surface of the conveyor belt 20, they fall into the channel A between the upper plate 71 and the conveyor belt 20. Further guided by the lower plate 72, the tea leaves are discharged from the constricted outlet formed by the lower edges of the two lower plates 72 below the conveyor belt 20. This arrangement can effectively separate the tea leaves swept off each conveyor belt 20 and guide them to a designated location for collection.

[0027] It should be noted that in existing technologies, a drying mesh is generally used to receive the flattened tea leaves. During the subsequent drying process, the Houkui tea leaves need to be arranged separately one by one. With the help of the guide plate 70, the flattened tea leaves will not fall randomly and pile up with the tea leaves swept off the conveyor belt 20 when they are swept off, thus avoiding unnecessary manual separation operations later.

[0028] Furthermore, combined Figure 3 As shown, the cleaning brush 40 is generally strip-shaped, and its length direction is consistent with the conveying direction of the conveyor belt 20. The upper plate 71 extends to the end positions of the cleaning brush 40 at both ends in the conveying direction of the conveyor belt 20. The cleaning brush 40 has a relatively long overall length along the conveying path of the conveyor belt 20. When multiple tea leaves are conveyed into the corresponding range of the cleaning brush 40, it can be controlled to perform a single sweeping motion, thereby simultaneously sweeping down multiple tea leaves from the conveyor belt 20, avoiding increased energy consumption due to high-frequency sweeping. Simultaneously, extending the upper plate 71 to the end positions of the cleaning brush 40 ensures that all tea leaves swept down by the cleaning brush 40 in the conveying direction of the conveyor belt 20 can be guided into channel A.

[0029] As a preferred solution, combined with Figure 5 and Figure 9As shown, a flat support plate 74 is provided below the portion of the conveyor belt 20 opposite to the cleaning brush 40 in its width direction. The length direction of the support plate 74 is consistent with the conveying direction of the conveyor belt 20. The end of the support plate 74 is connected to the fixing rod 73. A limiting groove 741 is formed on the upper surface of the support plate 74 at a position directly opposite the conveyor belt 20. The length direction of the limiting groove 741 is consistent with the conveying direction of the conveyor belt 20. The conveyor belt 20 and the belt body of the limiting groove 741, which are vertically opposite each other, are embedded in the limiting groove 741. The depth of the limiting groove 741 is less than the thickness of the conveyor belt 20. The edges of the support plate 74 are arranged parallel to the upper edge of the upper plate body 71 in its 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 portion of the conveyor belt 20 opposite to the cleaning brush 40, and the limiting groove 741 on the upper surface of the support plate 74 can limit the displacement of the conveyor belt 20 in the width direction. When the cleaning brush 40 pushes the tea leaves along the width direction of the conveyor belt 20, even if there is some interference between the belt body of the conveyor belt 20 and the lower end of the cleaning brush 40, the belt body of the conveyor belt 20 will not tilt or twist when the cleaning brush 40 pushes the conveyor belt 20 in the width direction. It maintains the flat and straight posture of the belt body, thereby ensuring that the tea leaves on the conveyor belt 20 fall normally into the channel A.

[0030] As a preferred solution, combined with Figure 5 and Figure 9 As shown, the upper end of the cleaning brush 40 is connected to the movable frame 60 through the connecting plate 41. The plate surface of the connecting plate 41 is arranged vertically and the length direction of the plate is consistent with the conveying direction of the conveyor belt 20. A connector 411 is provided at the lower edge of the connecting plate 41. The connector 411 is long and extends along the length direction of the connecting plate 41. The lower end face of the connector 411 has a groove 4111 with the groove opening facing downward and the groove length direction consistent with the length direction of the connecting plate 41. At least one end of the groove cavity of the mounting groove 4111 extends through the end face of the connector 4111 in the groove length direction. The upper end of the cleaning brush 40 is connected to an mounting strip 42 with a cross-sectional shape that matches the shape of the groove cavity of the mounting groove 4111. The mounting strip 42 is embedded in the mounting groove 4111 and forms a guide sliding fit with the mounting groove 4111 in the groove length direction. This solution takes into account that the sweeping brush 40 is a wear-prone part. In order to facilitate the replacement of the sweeping brush 40, an installation strip 42 is provided at the upper end of the sweeping brush 40. The installation strip 42 can be pulled out from the end of the installation groove 4111 on the connector 411 with an opening in the groove length direction. Then, the installation strip 42 of the new sweeping brush 40 is inserted into the installation groove 4111, thereby realizing the quick replacement of the specified sweeping brush 40 and facilitating subsequent inspection and maintenance operations.

[0031] It should be noted that the lower end of the mounting groove 4111 is tapered and the cross-sectional shape of the mounting strip 42 matches the shape of the groove cavity of the mounting groove 4111. The mounting strip 42 will not fall off the groove of the mounting groove 4111 downwards, and at the same time, it will prevent the mounting strip 42 from shifting in the groove width direction, thus ensuring the stability of the cleaning brush 40 relative to the movable frame 60 in the width direction of the conveyor belt 20.

[0032] As a preferred option, such as Figure 3 As shown, the movable frame 60 includes parallel slide rods 61 located in the same horizontal plane. The length direction of the slide rods 61 is in the horizontal direction perpendicular to the conveying direction of the conveyor belt 20. The two slide rods 61 are connected by a connecting rod 62. The two ends of the slide rods 61 pass through through holes 111 on two opposite upright plates 11 of the frame 10. The upper end of the cleaning brush 40 is connected to the slide rods 61 by a connecting plate 41. The movable frame 60 is raised by the upright plates 11. Under the constraint of the through holes 111 on the upright plates 11, the slide rods 61 can move in the width direction of the conveyor belt 20, so that the cleaning brush 40 connected to the slide rods 61 by the connecting plate 41 can move with the movable frame 60 in the width direction of the conveyor belt 20. The two slide rods 61 are connected by the connecting rod 62 to form an integral structure, which prevents the slide rods 61 from rotating on their own and causing the cleaning brush 40 to rotate in the vertical plane. It 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 a mounting platform 12. The drive unit 50 includes a motor 51 mounted on the mounting platform 12. The output shaft of the motor 51 is connected to a gear 52. A rack 53 is provided on the connecting rod 62. The length direction of the rack 53 is consistent with the length direction of the slide rod 61, and the teeth on the rack 53 mesh with the gear 52. In this scheme, 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 width direction of the conveyor belt 20. This causes the integral movable frame 60 composed of the connecting rod 62 and the slide rod 61 to translate in the width direction of the conveyor belt 20, thereby driving the cleaning brush 40 to push and sweep the tea leaves on the conveyor belt 20 or to reset it.

[0034] As a preferred solution, combined with Figure 3 , Figure 4 as well as Figure 7As shown, a support wheel 63 is provided on the outer side of the upright plate 11 at a position opposite to the slide rod 61. The support wheel 63 is located below the slide rod 61, and the wheel core of the support wheel 63 is in a horizontal direction perpendicular to the length of the slide rod 61. An arc-shaped groove 631 is formed on the circumferential surface of the support wheel 63 along its circumferential direction. The slide rod 61 is located in the arc-shaped groove 631, and the two form a guiding rolling fit. The wheel axle of the support wheel 63 forms a rotational fit with the bracket 64 on the upright plate 11 through a bearing seat. In this design, the support wheel 63 is provided on the upright plate 11 to support the slide rod 61, rather than the slide rod 61 being supported by the wall of the through hole 111. This improves the smoothness of the slide rod 61's displacement and avoids excessive scratching and wear between the slide rod 61 and the wall of the through hole 111, thus preventing noise.

[0035] It should be noted that the diameter of the through hole 111 is relatively large, and its hole wall does not contact the rod body of the slide rod 61. The arc-shaped groove 631 of the support wheel 63 can constrain the rod body of the slide rod 61, which can limit the axial displacement of the slide rod 61 in the support wheel 63 and prevent the axial displacement of the rod body of the slide rod 61 from scraping against the hole wall of the through hole 111.

[0036] In addition, combined Figure 1 , Figure 2 as well as Figure 7 As shown, to facilitate the collection of tea leaves swept off by the cleaning brush 40, a flat conveyor belt 80 is installed on the frame 10 below the conveyor belt 20. The conveying direction of the conveyor belt 80 is intersected (preferably perpendicular) to the conveyor belt 20. A mesh frame 81 is placed on the conveyor belt 80. When the mesh frame 81 is conveyed by the conveyor belt 80 to the position below the cleaning brush 40, it is used to receive the tea leaves swept off by the cleaning brush 40. Workers can place an empty mesh frame 81 at one end of the conveyor belt 80, which will then transport it to the position below the cleaning brush 40 to receive the tea leaves swept off. Subsequently, the mesh frame 81 containing the tea leaves is placed into the drying equipment for convenient drying of the tea leaves.

[0037] It should be noted that when the tea leaves at the downstream end of the conveyor belt 20 reach the downstream end of the cleaning brush 40, the cleaning brush 40 is then controlled to push and sweep the tea leaves. If a single conveyor belt 20 is used to roll and convey the tea leaves, after each push and sweep by the cleaning brush 40, the mesh frame 81 below the cleaning brush 40 is automatically conveyed downstream a certain distance by the conveyor belt 80. This ensures that the tea leaves falling from the conveyor belt 20 can be separated from the tea leaves already on the mesh frame 81, preventing tea leaf accumulation. Once the tea leaves on the mesh frame 81 are mostly filled, the mesh frame 81 will naturally be completely removed from the area under the conveyor belt 20. Then, the next mesh frame 81 will be conveyed by the conveyor belt 80 to a designated position to receive the tea leaves about to fall from the conveyor belt 20. If multiple conveyor belts 20 are used to roll and convey the tea leaves, the mesh frame 81 under the cleaning brush 40 can be directly filled with tea leaves after one sweep by the cleaning brush 40, and then the mesh frame 81 can be conveyed away. A new mesh frame 81 will then be conveyed to the area under the conveyor belt 20 to continue receiving the falling tea leaves. In practice, the choice of conveying method for the mesh frame 81 depends on the number of conveyor belts 20 and the size of the mesh frame 81.

Claims

1. A feeding mechanism for a tea pressing and forming machine, comprising a frame (10), a horizontally placed conveyor belt (20) on the frame (10), a rolling unit (30) for flattening tea leaves on the conveyor belt (20) above the conveyor belt (20), and a slit-like passage for the tea leaves to pass through between the rolling unit (30) and the surface of the conveyor belt (20), characterized in that: A cleaning brush (40) is provided on the conveying path of the conveyor belt (20) and downstream of the rolling unit (30). The cleaning brush (40) is located on the side of the conveyor belt (20). The lower end face of the cleaning brush (40) is arranged close to the belt surface of the conveyor belt (20) in the vertical direction. The driving unit (50) drives the cleaning brush (40) to move along the width direction of the conveyor belt (20) and push the tea leaves on the belt surface of the conveyor belt (20) to detach from the belt surface of the conveyor belt (20).

2. The feeding mechanism of the tea pressing and forming machine according to claim 1, characterized in that: The conveyor belt (20) is a narrow belt and several belts are arranged parallel to each other in the same horizontal plane. Each conveyor belt (20) is equipped with a cleaning brush (40) on its side. The upper end of each cleaning brush (40) is connected to a movable frame (60). The drive unit (50) drives the movable frame (60) to move along the width direction of the conveyor belt (20) and drives each cleaning brush (40) to push and sweep the tea leaves on the surface of each conveyor belt (20) to the surface of the conveyor belt (20) to detach from the surface of the conveyor belt (20).

3. The feeding mechanism of the tea pressing and forming machine according to claim 2, characterized in that: The conveyor belt (20) is provided with guide plates (70) on both sides of its width direction. The guide plate (70) includes an upper plate (71) arranged vertically on the plate surface. The length direction of the upper plate (71) is consistent with the conveying direction of the conveyor belt (20), and a channel (A) for tea leaves to fall is left between the plate surface of the upper plate (71) and the belt edge of the conveyor belt (20). The upper plate (71) and the cleaning brush (40) have overlapping sections in the conveying direction of the conveyor belt (20). The lower plate (72) with an inclined plate surface is arranged along the lower edge of the upper plate (71). The lower edges of the lower plates (72) on both sides of the same conveyor belt (20) are close together to form a constricted shape. The two ends of the upper plate (71) in the length direction are connected to the fixed rod (73) on the frame (10).

4. The feeding mechanism of the tea pressing and forming machine according to claim 3, characterized in that: The cleaning brush (40) is in the shape of a strip and its length direction is consistent with the conveying direction of the conveyor belt (20). The upper plate (71) extends to the end position of the cleaning brush (40) at both ends in the conveying direction of the conveyor belt (20).

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

6. The feeding 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) via a connecting plate (41). The connecting plate (41) is arranged vertically and its length direction is consistent with the conveying direction of the conveyor belt (20). A connector (411) is provided at the lower edge of the connecting plate (41). The connector (411) is long and extends along the length direction of the connecting plate (41). The lower end face of the connector (411) has a groove facing downwards and the groove length direction is consistent with the length direction of the connecting plate (41). A uniformly tapered mounting groove (4111) has a cavity in which at least one end extends through the end face of the connector (411) in the groove length direction. The upper end of the cleaning brush (40) is connected to a mounting strip (42) whose cross-sectional shape matches the shape of the cavity in the mounting groove (4111). The mounting strip (42) is embedded in the mounting groove (4111) and forms a guide sliding fit with the mounting groove (4111) in the groove length direction.

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

8. The feeding 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 connected to the mounting platform (12). The drive unit (50) includes a motor (51) mounted on the mounting platform (12). The output shaft of the motor (51) is connected to a gear (52). A rack (53) is provided on the connecting rod (62). The length direction of the rack (53) is consistent with the length direction of the slide rod (61), and the teeth on the rack (53) mesh with the gear (52).

9. The feeding mechanism of the tea pressing and forming machine according to claim 7, characterized in that: A support wheel (63) is provided on the outer side of the upright plate (11) at a position opposite to the slide rod (61). The support wheel (63) is located below the slide rod (61), and the wheel core of the support wheel (63) is located in the horizontal direction perpendicular to the length of the slide rod (61). An arc-shaped groove (631) is provided on the circumferential surface of the support wheel (63) along its circumferential direction. The rod body of the slide rod (61) is located in the arc-shaped groove (631), and the two form a guiding rolling fit. The wheel axle of the support wheel (63) forms a rotational fit with the bracket (64) on the upright plate (11) through the bearing seat.

10. The feeding mechanism of the tea pressing and forming machine according to claim 1 or 2, characterized in that: A conveyor belt (80) with its surface flat is provided 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 wire mesh frame (81) is placed on the conveyor belt (80). When the wire mesh frame (81) is conveyed by the conveyor belt (80) to the position below the cleaning brush (40), the wire mesh frame (81) is used to receive the tea leaves pushed down by the cleaning brush (40).

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