Brick tea semi-automatic pressing forming equipment and tea leaf pressing forming process

Abstract

This invention belongs to the field of brick tea production technology, specifically relating to a semi-automatic brick tea pressing and forming equipment and a tea pressing and forming process. The equipment includes a worktable, end supports, end guide rollers, an intermediate frame, an intermediate guide roller, a rounding forming groove, a movable support, a drive roller, and a circulating belt. End supports are fixed at both ends of the worktable, with end guide rollers rotatably mounted inside the end supports. The intermediate frame is mounted in the middle of the worktable, with an intermediate guide roller at the bottom and a rounding forming groove at the top. The movable support is slidably mounted on the worktable via a sliding guide structure, with a drive roller mounted inside. The circulating belt is sleeved on the outside of each roller and partially conforms to the inner wall of the rounding forming groove, forming a rolling forming cavity. This invention can achieve stable pressing of cylindrical brick tea, enabling simultaneous forming and packaging, improving production efficiency, ensuring the quality and intrinsic properties of the brick tea, and features stable operation, strong adaptability, and convenient operation, making it suitable for large-scale production and use by small and medium-sized enterprises.

Description

Technical Field

[0001] This invention belongs to the field of brick tea production technology, specifically relating to a semi-automatic brick tea pressing and forming equipment and a tea pressing and forming process. Background Technology

[0002] Brick tea, a traditional Chinese specialty tea, also known as steamed and pressed tea, is a type of tea made by pressing raw tea leaves into blocks after high-temperature steam treatment. It mainly includes varieties such as Fu brick tea, green brick tea, and black brick tea. Due to its ease of long-distance transportation, long storage time, and certain health benefits, it is highly favored by the market, and its production and processing industry has developed into a large-scale industry, becoming one of the pillar industries of some regions. The pressing and shaping of tea leaves is the core process in brick tea production, directly determining the regularity of the brick tea's shape, density uniformity, internal quality, and subsequent aging effect. Therefore, the rationality and efficiency of the pressing and shaping equipment and processes have a significant impact on the development of the brick tea industry.

[0003] The existing semi-automatic brick tea pressing and forming equipment has shortcomings in use. First, it cannot meet the pressing and forming requirements of cylindrical brick tea; second, it cannot achieve rapid packaging after pressing.

[0004] In view of this, the inventors hope to optimize and improve the existing semi-automatic brick tea pressing and molding equipment. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the traditional technology and to provide a semi-automatic brick tea pressing and forming equipment and a tea pressing and forming process.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution: This invention provides a semi-automatic brick tea pressing and forming equipment, including a worktable, an end support, an end guide roller, an intermediate frame, an intermediate guide roller, a rounding forming groove, a movable support, an active belt roller, and a circulating belt; The worktable is a horizontal bearing base, and its upper end face is symmetrically fixed to end brackets at both ends along the length direction. End guide rollers are rotatably embedded on the relatively inner side of the end brackets, and the axis of the end guide rollers is parallel to the width direction of the worktable. An intermediate frame is fixedly installed on the upper surface of the workbench near the middle. Intermediate guide rollers are symmetrically rotated and installed on the bottom of the intermediate frame near both ends. The intermediate guide rollers are arranged parallel to the end guide rollers. A rolling forming groove is integrally formed or detachably fixed on the upper part of the intermediate frame near the tail end. The rolling forming groove is an arc-shaped groove structure used to realize the rolling forming of cylindrical brick tea. The upper surface of the workbench is provided with a sliding guide structure along its length. The movable bracket is slidably supported above the workbench through the sliding guide structure. The active belt roller is rotatably installed on the relatively inner side of the movable bracket. The active belt roller is arranged in parallel with the end guide roller and the middle guide roller, and a circulating belt is installed on the outer side of the end guide roller, the middle guide roller and the active belt roller. The circulating belt is partially attached to the inner wall of the rolling forming groove to form a cylindrical brick tea rolling forming cavity.

[0007] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, the axial lengths of the end guide roller, the middle guide roller, and the active belt roller are all adapted to the width of the circulating belt, and the outer circumferential surfaces of the three are closely fitted with the inner surface of the circulating belt to ensure the stability of the circulating belt during operation and avoid deviation or slippage.

[0008] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, a heater is fixedly installed on the outside of the intermediate guide roller on the intermediate frame. The heating end of the heater is set towards the circulating belt to heat the circulating belt at a constant temperature, thereby assisting in temperature control of the tea raw materials during the rolling and forming process, ensuring the forming density and internal quality of the brick tea.

[0009] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, an anti-jump pressure roller is rotatably installed on the movable support above or to the side of the active belt roller. The anti-jump pressure roller is arranged parallel to the active belt roller, and a gap matching the thickness of the circulating belt is left between them. The circulating belt passes through this gap to limit the jumping during the operation of the circulating belt and further improve the stability of the equipment operation.

[0010] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, the active belt roller is driven by either manual or electric means. The electric drive method uses a motor in conjunction with a reduction mechanism, while the manual drive method uses a handle coaxially connected to the active belt roller. The choice can be made flexibly according to actual production needs.

[0011] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, the movable support slides along the length of the worktable using either a manual drive or an electric drive. The manual drive method uses a screw and nut mechanism or a push-pull handle, while the electric drive method uses a linear drive module. During the sliding process, the tension of the circulating belt can be precisely adjusted to meet the forming requirements of cylindrical brick tea of ​​different specifications.

[0012] Furthermore, in the aforementioned semi-automatic brick tea pressing and forming equipment, the circulating belt is integrally molded from heat-resistant transparent plastic material with a heat resistance temperature of not less than 80℃. The transparent structure allows operators to observe the brick tea forming status and packaging conditions in real time, and its heat resistance performance is adapted to the auxiliary temperature control requirements of the heater.

[0013] This invention also provides a tea pressing and forming process, based on the aforementioned semi-automatic brick tea pressing and forming equipment, specifically including the following steps: S1. The brick tea raw materials that have been treated with high temperature steam are evenly put into the rolling forming trough. The tea raw materials in the trough are initially compacted by manual pressing or external pressing device to ensure that the tea raw materials are filled evenly. S2. Start the active belt roller. The rotation of the active belt roller drives the circulating belt to move along the end guide roller, the middle guide roller and the active belt roller in a circular motion. The circulating belt, which is in contact with the inner wall of the rolling forming groove, synchronously drives the tea raw material in the groove to roll and squeeze until the tea raw material is rolled and formed into a regular cylindrical brick tea. S3. Lay the special packaging paper for brick tea flat on the circulating belt, insert one end of the packaging paper into the inner area of ​​the cylindrical brick tea and fix it, continue to drive the active belt roller to rotate, and use the circulating displacement of the circulating belt to drive the packaging paper to uniformly cover the outer circumference of the cylindrical brick tea, so as to realize the synchronous process of brick tea forming and packaging. S4. Drive the movable support to slide towards the front end support, so that the part of the circulating belt located in the rounding forming groove gradually straightens, and then smoothly removes the cylindrical brick tea covered with packaging paper from the rounding forming groove. The two ends of the packaging paper are sealed manually to complete the entire brick tea pressing, forming and packaging process.

[0014] The beneficial effects of this invention are: 1. This invention, by setting an arc-shaped groove structure in the upper part of the intermediate frame to form a rolling forming cavity adapted to cylindrical brick tea, in conjunction with the synergistic effect of the circulating belt, guide rollers, and drive belt rollers, can stably realize the rolling forming of cylindrical brick tea, breaking the limitation of traditional equipment that can only press block brick tea, meeting the diverse market demand for brick tea of ​​different shapes, and helping to enhance the competitiveness of enterprise products.

[0015] 2. The present invention optimizes the process design. After the brick tea is rolled and formed, the circulating displacement of the circulating belt can directly drive the packaging paper to uniformly wrap the outer surface of the cylindrical brick tea. There is no need to transfer the formed brick tea to special packaging equipment, which reduces production steps, shortens the production cycle, effectively improves the overall efficiency of brick tea pressing and packaging, and reduces the intensity of manual labor.

[0016] 3. The equipment has a reasonable overall structure and reliable component connections. The semi-automatic operation mode lowers the skill threshold for operators, allowing them to start operating the equipment without complicated training. The formed brick tea can be smoothly moved out through the sliding support, and the subsequent sealing operation is simple, further improving the convenience of operation. It is suitable for large-scale production and small and medium-sized enterprises.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the middle support of the present invention; Figure 3 This is a schematic diagram of the intermediate frame in this invention; Figure 4 This is a schematic diagram of the structure of the movable support in this invention; Figure 5 This is a schematic diagram of one possible orientation of the recirculating belt in this invention; Figure 6 This is a schematic diagram of the cylindrical brick tea and packaging paper in this invention; In the attached diagram, the component numbers are as follows: 1-Workbench, 2-End support, 3-End guide roller, 4-Intermediate frame, 5-Intermediate guide roller, 6-Rounding forming groove, 7-Modible support, 8-Active belt roller, 9-Circulating belt, 10-Cylindrical brick tea, 11-Packaging paper. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 like Figures 1-6 As shown, this embodiment provides a semi-automatic brick tea pressing and forming equipment, including a worktable 1, an end support 2, an end guide roller 3, an intermediate frame 4, an intermediate guide roller 5, a rounding forming groove 6, a movable support 7, an active belt roller 8, and a circulating belt 9.

[0022] The workbench 1 is a horizontal load-bearing base, made of stainless steel and welded together. It is 200cm long, 80cm wide and 70cm high. The upper end face is symmetrically fixed to the two ends of the end bracket 2 along the length direction. The end bracket 2 is made of steel plate and is detachably fixed to the workbench 1 by bolts. The opposite inner side of the end bracket 2 is fitted with end guide roller 3 through bearings. The axis of the end guide roller 3 is parallel to the width direction of the workbench 1. The end guide roller 3 is made of seamless steel pipe with a diameter of 8cm and an axial length of 70cm. The intermediate frame 4 is fixedly installed on the upper end face of the workbench 1 near the middle position by bolts. The intermediate frame 4 is a frame structure made of aluminum alloy. The intermediate guide roller 5 is symmetrically installed on the bottom of the intermediate frame 4 near both ends by bearings. The intermediate guide roller 5 is arranged parallel to the end guide roller 3. The specifications of the intermediate guide roller 5 are the same as those of the end guide roller 3. The upper part of the intermediate frame 4 near the tail end is detachably fixed with a rolling forming groove 6 by bolts. The rolling forming groove 6 is an arc-shaped groove structure with a groove radius of 10cm and a length of 70cm, which is adapted to the axial length of the end guide roller 3 and is used to realize the rolling forming of cylindrical brick tea 10. The upper surface of the worktable 1 is provided with two parallel sliding guide rails (sliding guide structure) along its length. The guide rail model is HGR20. The movable bracket 7 is slidably supported above the worktable 1 by a slider. The active belt roller 8 is rotatably installed on the inner side of the movable bracket 7 through a bearing. The active belt roller 8 has a diameter of 10cm and an axial length of 70cm, and is arranged parallel to the end guide roller 3 and the middle guide roller 5. The outer sides of the end guide roller 3, the middle guide roller 5 and the active belt roller 8 are jointly fitted with a circulating belt 9. The circulating belt 9 is made of heat-resistant transparent polyvinyl chloride material in one piece. Its heat resistance temperature is 100℃, the belt width is 70cm and the thickness is 0.5cm. The circulating belt 9 is partially attached to the inner wall of the rolling forming groove 6 to form the rolling forming cavity of the cylindrical brick tea 10. The intermediate frame 4 is located outside the intermediate guide roller 5 and is fixedly installed with a heater by a bracket. The heater is an electric heating tube with a power of 500W. Its heating end is set towards the circulating belt 9 to keep the circulating belt 9 at a constant temperature. The constant temperature is controlled at 60-70℃, thereby providing auxiliary temperature control for the tea raw materials in the rolling forming process. An anti-jump pressure roller is rotatably mounted on the movable bracket 7 above the active belt roller 8. The anti-jump pressure roller has a diameter of 5cm and an axial length of 70cm. It is arranged parallel to the active belt roller 8, and there is a gap (0.6cm) between them that is adapted to the thickness of the circulating belt 9. The circulating belt 9 passes through this gap to limit the jumping of the circulating belt 9 during operation. The active belt roller 8 is driven by an electric motor, specifically a Y100L-2 motor with a reduction gear. The motor speed is adjusted by a frequency converter, which can achieve stepless speed regulation from 0 to 20 r / min. The movable support 7 is driven by an electric motor to slide along the length of the worktable 1. Specifically, it is driven by a SKR100 linear drive module with a sliding stroke of 50 cm, which can precisely adjust the tension of the circulating belt 9.

[0023] Example 2 This embodiment provides a tea pressing and forming process, based on the semi-automatic brick tea pressing and forming equipment of Embodiment 1, and specifically includes the following steps: S1. Raw material pretreatment and filling: The raw tea leaves are treated with 100℃ high-temperature steam for 10 minutes. After the tea leaves are softened, they are evenly put into the rounding forming tank 6. The amount of tea leaves put into the tank 6 is 80% of the volume. An external pressure plate is used to initially compact the tea leaves in the tank. The pressing pressure is controlled at 0.3MPa to ensure that the tea leaves are filled evenly, without gaps or accumulation. S2, Roll forming: Start the drive motor of the active belt roller 8 and adjust the motor speed to 10r / min. The rotation of the active belt roller 8 drives the circulating belt 9 to circulate along the end guide roller 3, the middle guide roller 5 and the active belt roller 8. The circulating belt 9, which is in contact with the inner wall of the rolling forming groove 6, synchronously drives the tea raw material in the groove to roll and squeeze. At the same time, start the heater and control the temperature of the circulating belt 9 at 65℃. Continue rolling for 20 minutes until the tea raw material is rolled into a regular cylindrical brick tea 10 with a diameter of 20cm and a length of 70cm. S3. Synchronous Packaging: Lay the special packaging paper 11 (80cm wide and 220cm long) for brick tea flat on the circulating belt. Insert one end of the packaging paper 11 into the inner area of ​​the cylindrical brick tea 10 and temporarily fix it with high-temperature resistant tape. Continue to keep the active belt roller 8 rotating at a speed of 10r / min. Use the circulating displacement of the circulating belt 9 to drive the packaging paper 11 to uniformly wrap the outer circumference of the cylindrical brick tea 10. During the wrapping process, ensure that the packaging paper 11 is tightly attached without wrinkles or looseness, so as to realize the synchronous process of brick tea forming and packaging. S4. Discharge and Sealing: Start the linear drive module to drive the movable bracket 7 to slide towards the front end bracket 2 at a sliding speed of 5cm / min. This will gradually straighten the part of the circulating belt 9 located in the rounding forming groove 6, and then smoothly remove the cylindrical brick tea 10 covered with packaging paper 11 from the rounding forming groove 6. After manually folding both ends of the packaging paper 11, seal it with special sealing tape to complete the entire brick tea pressing and packaging process.

[0024] Example 3 The difference between this embodiment and embodiment 1 is that the active belt roller 8 is driven manually, specifically by a handle coaxially connected to the active belt roller 8, and the active belt roller 8 is rotated by turning the handle; the movable bracket 7 is driven manually, specifically by a screw and nut mechanism, with one end of the screw connected to the movable bracket 7 and the other end provided with a crank, and the movable bracket 7 is moved along the sliding guide rail by turning the crank, and the rest of the structure is the same as that of embodiment 1.

[0025] The equipment in this embodiment is suitable for small-scale workshop production, requires no external power supply, is flexible in operation, and can adjust the rolling speed and the tension of the circulating belt according to the operator's strength, adapting to the needs of pressing small batches and multiple specifications of cylindrical brick tea.

[0026] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A semi-automatic brick tea pressing and forming equipment, characterized in that, It includes a worktable, end support, end guide rollers, intermediate frame, intermediate guide rollers, rounding forming groove, movable support, drive belt rollers, and circulating belt; The worktable is a horizontal bearing base, and its upper end face is symmetrically fixed to end brackets at both ends along the length direction. End guide rollers are rotatably embedded on the relatively inner side of the end brackets, and the axis of the end guide rollers is parallel to the width direction of the worktable. An intermediate frame is fixedly installed on the upper surface of the workbench near the middle. Intermediate guide rollers are symmetrically rotated and installed on the bottom of the intermediate frame near both ends. The intermediate guide rollers are arranged parallel to the end guide rollers. A rolling forming groove is integrally formed or detachably fixed on the upper part of the intermediate frame near the tail end. The rolling forming groove is an arc-shaped groove structure used to realize the rolling forming of cylindrical brick tea. The upper surface of the workbench is provided with a sliding guide structure along its length. The movable bracket is slidably supported above the workbench through the sliding guide structure. The active belt roller is rotatably installed on the relatively inner side of the movable bracket. The active belt roller is arranged in parallel with the end guide roller and the middle guide roller, and a circulating belt is installed on the outer side of the end guide roller, the middle guide roller and the active belt roller. The circulating belt is partially attached to the inner wall of the rolling forming groove to form a cylindrical brick tea rolling forming cavity.

2. The semi-automatic brick tea pressing and forming equipment according to claim 1, characterized in that, The axial lengths of the end guide roller, the intermediate guide roller, and the drive belt roller are all adapted to the width of the circulating belt.

3. The semi-automatic brick tea pressing and forming equipment according to claim 2, characterized in that, The intermediate frame is fixedly mounted with a heater on the outside of the intermediate guide roller.

4. The semi-automatic brick tea pressing and forming equipment according to claim 3, characterized in that, An anti-jump pressure roller is rotatably mounted on the movable support above or to the side of the active belt roller. The anti-jump pressure roller is arranged parallel to the active belt roller, and there is a gap between them that is adapted to the thickness of the circulating belt.

5. The semi-automatic brick tea pressing and forming equipment according to claim 4, characterized in that, The active belt roller is rotated by either manual or electric drive.

6. The semi-automatic brick tea pressing and forming equipment according to claim 5, characterized in that, The movable support slides along the length of the workbench using either manual or electric drive.

7. The semi-automatic brick tea pressing and forming equipment according to claim 6, characterized in that, The circulation belt is made of heat-resistant transparent plastic material in one piece.

8. A tea pressing and forming process, implemented based on the semi-automatic brick tea pressing and forming equipment described in claim 7, characterized in that, Specifically, the steps include the following: S1. The brick tea raw materials that have been treated with high temperature steam are evenly put into the rolling forming trough. The tea raw materials in the trough are initially compacted by manual pressing or external pressing device to ensure that the tea raw materials are filled evenly. S2. Start the active belt roller. The rotation of the active belt roller drives the circulating belt to move along the end guide roller, the middle guide roller and the active belt roller in a circular motion. The circulating belt, which is in contact with the inner wall of the rolling forming groove, synchronously drives the tea raw material in the groove to roll and squeeze until the tea raw material is rolled and formed into a regular cylindrical brick tea. S3. Lay the special packaging paper for brick tea flat on the circulating belt, insert one end of the packaging paper into the inner area of ​​the cylindrical brick tea and fix it, continue to drive the active belt roller to rotate, and use the circulating displacement of the circulating belt to drive the packaging paper to uniformly cover the outer circumference of the cylindrical brick tea, so as to realize the synchronous process of brick tea forming and packaging. S4. Drive the movable support to slide towards the front end support, so that the part of the circulating belt located in the rounding forming groove gradually straightens, and then smoothly removes the cylindrical brick tea covered with packaging paper from the rounding forming groove. The two ends of the packaging paper are sealed manually to complete the entire brick tea pressing, forming and packaging process.

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