Tea leaf compression molding device

Abstract

A tea leaf pressing and forming device comprises a rack, a plurality of horizontally-arranged conveying belts are arranged on the rack in parallel at intervals, the belt faces of the conveying belts are located in the same horizontal plane, supporting plates used for supporting belt bodies of the conveying belts are arranged below the conveying belts, and rolling units are arranged above the conveying belts. Two conveying belts are arranged above the belt face area of the conveying belt in parallel in a spaced mode, the belt faces of the two conveying belts are located in the plumb direction, and the conveying direction of the two conveying belts is consistent with the conveying direction of the conveying belts. The wheel cores of the transmission gears are located in the plumb direction, every two adjacent transmission gears are meshed with each other to form transmission fit, transmission between the transmission gears can be stable, the chain disengaging risk existing in a chain transmission mode is avoided, and normal conveying of tea leaves is guaranteed.

Description

Technical Field

[0001] This utility model relates to tea processing equipment, specifically to a tea pressing and forming device. Background Technology

[0002] Taiping Houkui is one of China's traditional famous teas, characterized by its two leaves embracing a bud, which are flat and straight. Its main processing techniques include fixation (withering), pressing and shaping (commonly known as "tip pinching"), and drying. The traditional pinching process involves first placing each withered tea leaf at intervals on a leaf-leaf frame, then covering the leaves with cotton cloth, and finally rolling the cloth with rollers to flatten the leaves. This pressing and shaping process is the main reason limiting Taiping Houkui's production capacity. Currently, some mechanized pressing and shaping equipment exists in the Houkui forming industry to improve production capacity.

[0003] The patent document entitled "A Taiping Houkui Tea 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 along the path of the bottom support conveyor belts; a conical feed chute 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 chute. Through the effective combination of the tea straightening machine, the conical feed chute, and the bottom support conveyor belts, left conveyor belts, and right conveyor belts at the pressing and forming station, along with the rolling pressure roller pressing, continuous pressing and forming processing can be achieved.

[0004] In the above technical solution, drive gears are installed on the drive shafts of the left and right conveyor belts. All drive gears and the driving gears are engaged in chain transmission with the transmission chain arranged in an S-shape. Thus, when the driving gear rotates, each drive gear rotates simultaneously, causing the left and right conveyor belts to operate. However, the drive gears are arranged vertically on their axles, and the transmission chain is supported only by the teeth covering the drive gears. The coverage angle of the transmission chain is small, and the teeth on the drive gears are also small, resulting in poor tension of the transmission chain. This makes it very easy for the chain to derail, causing the left and right conveyor belts to stop operating. The overall transmission structure has poor stability, which directly affects whether the tea can be transported normally. Summary of the Invention

[0005] This invention provides a tea pressing and forming device that improves the transmission stability of the conveyor belt drive structure and ensures stable operation of the equipment.

[0006] To achieve the above objectives, the technical solution adopted is as follows: a tea pressing and forming device, including a frame, on which several horizontally placed conveyor belts are arranged at parallel intervals, with the belt surfaces of each conveyor belt located in the same horizontal plane. A support plate is provided below each conveyor belt to support its belt body. A rolling unit is arranged above each conveyor belt. The rolling unit includes a roller frame, which is erected beside the conveyor belt and connected to the support plate. A rolling roller is rotatably connected to the roller frame via bearings. The axle core of the rolling roller is located in a horizontal direction perpendicular to the conveying direction of the conveyor belt. Above the belt surface area are two parallel conveyor belts arranged at intervals. The belt surfaces of the two conveyor belts are in the vertical direction and their conveying direction is the same as that of the conveyor belts. The lower end of the roller is located between the opposite sides of the belt surfaces of the two conveyor belts. The circumference of the roller, the belt surface of the conveyor belt, and the opposite sides of the belt surfaces of the two conveyor belts form a slit-like passage for the tea leaves to pass through and flatten them. The drive wheel that drives the conveyor belts is coaxially connected to the axle of the drive wheel. The core of the drive gear is in the vertical direction and the two adjacent drive gears mesh with each other to form a transmission engagement.

[0007] Compared with the prior art, the technical effect of this utility model is as follows: the drive wheel of the conveyor belt is coaxially connected to the drive gear, and the two adjacent drive gears mesh with each other to form a transmission cooperation. The drive gears can transmit power stably, avoiding the risk of chain derailment in the chain drive method and ensuring the normal transportation of tea. Attached Figure Description

[0008] Figure 1 This is a three-dimensional appearance schematic diagram of the present utility model;

[0009] Figure 2 for Figure 1 Schematic diagram of a local structure in the middle;

[0010] Figure 3 This is a schematic diagram of the rolling unit and the conveyor belt;

[0011] Figure 4 for Figure 3 The K-direction view in the image. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described in detail below, including related content:

[0013] A tea pressing and forming device includes a frame 10. Several horizontally placed conveyor belts 20 are arranged parallel to each other on the frame 10, with the belt surfaces of each conveyor belt 20 lying on the same horizontal plane. A support plate 30 is provided below each conveyor belt 20 to support its belt body. A rolling unit 40 is arranged above each conveyor belt 20. The rolling unit 40 includes a roller frame 41, which is erected beside the conveyor belt 20 and connected to the support plate 30. A rolling roller 42 is rotatably connected to the roller frame 41 via bearings. The axle core of the rolling roller 42 is located horizontally perpendicular to the conveying direction of the conveyor belt 20. On the belt surface area of ​​the conveyor belt 20... Two parallel conveyor belts 43 are arranged at intervals. The belt surfaces of the two conveyor belts 43 are in the vertical direction and their conveying direction is the same as that of the conveyor belt 20. The lower end of the roller 42 is located between the opposite belt surfaces of the two conveyor belts 43. The circumferential surface of the roller 42, the belt surface of the conveyor belt 20, and the opposite belt surfaces of the two conveyor belts 43 enclose a slit-like passage A for tea leaves to pass through and flatten. A transmission gear 45 is coaxially connected to the axle 46 of the power wheel 44 used to drive the conveyor belts 43. The core of the transmission gear 45 is in the vertical direction and two adjacent transmission gears 45 mesh with each other to form a transmission engagement.

[0014] The flattening process of the tea leaves is as follows: Figure 1 As shown, a single tea leaf is guided from the direction indicated by arrow a to the upstream surface of conveyor belt 20. With the transport of the conveyor belt 20 and the auxiliary transport of the conveyor belt 43, the tea leaf is conveyed into a slit-like passage A formed by the circumference of the roller 42, the surface of the conveyor belt 20, and the opposite sides of the two conveyor belts 43. When the tea leaf passes under the roller 42, the circumference of the roller 42 rolls the tea leaf on the conveyor belt 20, flattening it. The flattened tea leaf continues to be transported downstream with the conveyor belt 20 for further processing. The arrangement of the two opposite conveyor belts 43 above the surface of the conveyor belt 20 restricts the movement path of the tea leaf on the conveyor belt 20, preventing it from shifting in the width direction when passing under the roller 42, thus guiding the tea leaf to accurately move below the circumference of the roller 42 for flattening.

[0015] In the above technical solution, the power wheel 44 used to drive the conveyor belt 43 is coaxially connected to the transmission gear 45 and the adjacent transmission gears 45 directly mesh. When one of the transmission gears 45 is driven to rotate in a specified direction, all transmission gears 45 can be effectively driven, avoiding the risk of chain derailment in the chain drive method and ensuring the normal operation of each conveyor belt 43.

[0016] Furthermore, combined Figure 2 and Figure 3As shown, an mounting plate 50 is installed on the conveyor belt 20 upstream of the rolling unit 40. The mounting plate 50 is strip-shaped and located above the belt body of the conveyor belt 20. The length of the mounting plate 50 extends along the width of the conveyor belt 20, and its end is fixedly connected to the frame 10. The drive wheel 44 is located below the mounting plate 50, and the axle of the drive wheel 44 passes through the mounting plate 50 from bottom to top and extends upward. The transmission gear 45 is connected to the top of the axle 46 of the drive wheel 44. The mounting plate 50 can serve as the base for arranging the axle 46 of the drive wheel 44. The drive wheel 44 is connected to the lower end of the axle 46, and the transmission gear 45 is connected to the upper end. The axle 46 and the mounting plate 50 are connected by bearings to form a rotational fit. The mounting plate 50 is located on the middle shaft between the drive wheel 44 and the transmission gear 45. When the upper and lower ends of the axle 46 are simultaneously subjected to radial forces, the mounting plate 50 provides support for the middle of the shaft, preventing the shaft from bending and deforming. Of course, in this scheme, the wheel axle 46 can also be connected to the support plate 30 through a bearing to form a rotational fit.

[0017] As a preferred embodiment, in the conveying direction of the conveyor belt 20, the driving wheel 44 is located upstream of the roller frame 41, and two driven wheels 47 that are connected to the same conveyor belt 43 are arranged downstream of the driving wheel 44. The two driven wheels 47 are placed upstream and downstream of the rolling roller 42 respectively. The diameter of the driving wheel 44 is smaller than the diameter of the driven wheels 47. The opposite sides of the conveyor belts 43 on both sides of the same conveyor belt 20 form a flared tea inlet at the upstream end.

[0018] Two driven wheels 47, which are in transmission cooperation with the same conveyor belt 43, guide the path of the conveyor belt 43, making the opposite sides of the conveyor belt 43 on both sides of the same conveyor belt 20 parallel to each other, thus helping to constrain the movement path of the tea leaves. The driving wheel 47, which drives the conveyor belt 43, has a smaller diameter than the driven wheels 47, causing the opposite sides of the conveyor belt 43 on both sides of the same conveyor belt 20 to form a flared tea inlet at the upstream end, which facilitates guiding the tea leaves accurately into passage A.

Claims

1. A tea leaf pressing forming device, comprising a frame (10), a plurality of horizontal conveying belts (20) are arranged in parallel on the frame (10) and the belt surfaces of the conveying belts (20) are located in the same horizontal plane, a support plate (30) for supporting the belt bodies of the conveying belts (20) is arranged below the conveying belts (20), a rolling unit (40) is arranged above each conveying belt (20), the rolling unit (40) comprises a roller frame (41) which is arranged vertically beside the conveying belt (20) and connected with the support plate (30), a rolling wheel (42) is rotatably connected with the roller frame (41) through a bearing, the axis core direction of the rolling wheel (42) is located in the horizontal direction perpendicular to the conveying direction of the conveying belt (20), two conveying belts (43) are arranged in parallel above the belt surface area of the conveying belt (20), the belt surfaces of the two conveying belts (43) are located in the plumb direction and the conveying direction of the two conveying belts (43) is consistent with the conveying direction of the conveying belt (20), the lower end wheel body part of the rolling wheel (42) is located between the opposite belt surfaces of the two conveying belts (43), the peripheral surface of the rolling wheel (42), the belt surface of the conveying belt (20) and the opposite belt surfaces of the two conveying belts (43) enclose a gap-shaped passage (A) for the tea leaves to pass through and implement the pressing of the tea leaves, characterized in that: The wheel shaft (46) of the power wheel (44) for driving the transmission belt (43) is coaxially connected with a transmission gear (45), the wheel core of the transmission gear (45) is located at the plumb direction, and two adjacent transmission gears (45) are engaged with each other to form a transmission match.

2. The tea leaf press molding apparatus according to claim 1, characterized by: The installation plate (50) is provided at the upstream position of the rolling unit (40) on the conveying belt (20), the installation plate (50) is in the form of a strip plate and is located above the belt body of the conveying belt (20), the plate length direction of the installation plate (50) extends along the belt width direction of the conveying belt (20), and the plate end is fixedly connected with the rack (10), the power wheel (44) is located below the installation plate (50), the wheel shaft of the power wheel (44) penetrates the installation plate (50) from bottom to top and extends upward, and the transmission gear (45) is connected to the top end of the wheel shaft (46) of the power wheel (44).

3. The tea leaf press molding apparatus according to claim 1 or 2, characterized by: In the conveying direction of the conveying belt (20), the power wheel (44) is located at the upstream position of the roller frame (41), two driven wheels (47) which form a transmission match with the same transmission belt (43) are arranged in sequence downstream of the power wheel (44), the two driven wheels (47) are respectively arranged at the upstream and downstream positions of the rolling wheel (42), the diameter of the power wheel (44) is smaller than that of the driven wheel (47), and the opposite belt surfaces of the transmission belts (43) on both sides of the same conveying belt (20) form a flared tea leaf inlet at the upstream end position.

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