Pressing mechanism for tea leaf pressing production

Abstract

The utility model relates to a pressing mechanism for pressing production of tea leaves, which comprises a support, a pressing mechanism and a pressing mechanism. The driving source is fixedly arranged at one end of the support, the output end of the driving source penetrates through the support, and the driving source is used for providing driving force; the hinging mechanism is arranged on the peripheral side of the support in a circumferential array mode, and the driving source can drive the hinging mechanism to stretch out and draw back along the axis; the at least three pressing jigs are respectively arranged on the hinge mechanism, and the at least three pressing jigs are respectively arranged on the hinge mechanism; and when the driving source drives the hinging mechanism to retract along the axis, the pressing jig is driven to be closed to define a pressing cavity. The tea leaf pressing device has the advantages of being good in pressing effect, accurate in control, stable in structure, convenient to operate and maintain and the like, can effectively solve the problems existing in a traditional tea leaf pressing mode, and meets the requirements of modern tea leaf pressing production for high quality and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tea pressing equipment and technology, and in particular to a pressing mechanism used in tea pressing production. Background Technology

[0002] In tea production, the pressing process is crucial for certain tea types (such as Pu-erh tea cakes and Fu brick tea). Traditional tea pressing methods rely heavily on manual operation or relatively simple mechanical pressing equipment, which has many shortcomings. Manual pressing is inefficient and makes it difficult to ensure the consistency of quality indicators such as shape and compactness of each batch of tea. Existing mechanical pressing equipment often has an inadequate structure, failing to achieve flexible and precise pressing movements. This can lead to uneven stress on the tea leaves during pressing, affecting the appearance and internal quality of the finished product, resulting in irregular shapes and loose tea leaves. Furthermore, there is a lack of effective design for controlling the pressure during pressing, adjusting the pressing angle, and ensuring the adaptability of the pressing fixtures. Therefore, there is an urgent need for a more sophisticated and efficient tea pressing mechanism to improve the quality and efficiency of tea pressing. Summary of the Invention

[0003] The purpose of this invention is to provide a pressing mechanism for tea pressing production that has many advantages such as good pressing effect, precise control, stable structure and easy operation and maintenance, and can effectively solve the problems existing in traditional tea pressing methods and meet the needs of modern tea pressing production for high quality and high efficiency, so as to solve the above-mentioned technical problems.

[0004] To achieve the above technical solution, the technical solution of this utility model is as follows: The pressing mechanism for tea pressing production mainly consists of a support, a drive source, a hinge mechanism, and a pressing fixture.

[0005] Furthermore, the support adopts a hollow rotating body shape, providing a stable support frame for the entire pressing mechanism and a mounting base for each component. Its internal space can accommodate some transmission structures or wiring arrangements, while its external shape facilitates the installation of components arranged in a circular array.

[0006] Furthermore, the drive source is fixedly installed at one end of the bracket, and its output end passes through the bracket. As the power core, it can provide stable driving force to drive subsequent related components to perform actions, thereby realizing the tea pressing operation.

[0007] Furthermore, the hinge mechanism is arranged in a circular array on the periphery of the support, with at least five sets, and can move telescopically along the axis under the drive of the drive source. This circular array distribution allows the subsequent pressing action to apply force evenly from multiple directions, ensuring the uniformity of tea pressing.

[0008] There are at least three pressing fixtures, each mounted on a hinge mechanism. Through cooperation with the hinge mechanism, when the drive source drives the hinge mechanism to retract along the axis, the multiple pressing fixtures can close to form a pressing cavity to accommodate and press the tea leaves, shaping them into the desired form.

[0009] Furthermore, the drive source is a cylinder, mounted on one end of the bracket via a mounting base. This choice offers advantages such as low cost, stable power output, and ease of control. Simultaneously, sensors are installed at the cylinder's extension and retraction positions. These sensors monitor the cylinder's extension and retraction status in real time, i.e., the progress of the pressing action, and then feed this feedback to the control system. This allows for precise control of key parameters such as pressing force and time, ensuring consistent tea pressing results each time and preventing over- or under-pressing from affecting tea quality.

[0010] Furthermore, the hinge mechanism includes a first pull arm and a second swing arm that are hinged together. This hinged connection allows the components to rotate relatively flexibly, achieving a specific motion trajectory. One end of the second swing arm is rotatably connected to the bracket, ensuring a stable fulcrum during movement. The other end is slidably mounted on the pressing fixture, allowing its motion to be transmitted to the pressing fixture and drive its action. One end of the first pull arm is hinged to a first auxiliary arm, and the other end is hinged to a second auxiliary arm, forming a relatively complex but effective transmission link. The first auxiliary arm is hinged to the pressing fixture, further enhancing the linkage with the pressing fixture. The second auxiliary arm is driven by the output end of the drive source. Thus, when the drive source moves the second auxiliary arm along the axis, the interaction between the arms can cause the pressing fixture to tilt slightly and then close together to form a pressing cavity. This ingenious design of first slightly tilting and then bringing the tea leaves closer together allows for better distribution and filling of the pressing chamber, preventing uneven accumulation in certain areas. Furthermore, by using multiple pressing fixtures to press the tea leaves from different directions in this manner, the tea leaves can be subjected to more uniform and reasonable pressure, improving the compactness and shape regularity of the pressed tea leaves.

[0011] Furthermore, the pressing fixture includes an arc-shaped connecting plate. This arc design facilitates the formation of a circular or near-circular pressing cavity by multiple pressing fixtures, meeting the requirements of common tea pressing shapes (such as tea cakes). A pressing seat is fixed to one end of the connecting plate. This pressing seat has a spherical, concave design. This spherical, concave structure contacts the tea leaves during pressing, better conforming to the tea leaf surface and avoiding excessive local compression. It also ensures that the tea leaves receive appropriate pressure throughout the pressing cavity, helping to guarantee the shape and quality of the pressed tea leaves. Additionally, it makes it easier for the tea leaves to detach from the pressing fixture during demolding. Furthermore, a connecting seat protrudes radially outward from the connecting plate. This connecting seat securely connects with the hinge mechanism, ensuring reliable linkage between the pressing fixture and the hinge mechanism throughout the pressing process, preventing loosening or misalignment that could affect the pressing effect.

[0012] Furthermore, drive blocks are arrayed on the periphery of the support, and drive grooves are inclinedly run through the drive blocks. These drive grooves can cooperate with the hinge mechanism or other related transmission components to provide guidance and constraint for the movement of each component when the drive source is working. This makes the movement of each component of the entire pressing mechanism more orderly and precise, further ensuring the accuracy and stability of the pressing action and ensuring the smooth progress of the tea pressing process.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) Through the coordination of a hinged mechanism arranged in a circular array and at least three pressing fixtures, the tea leaves can be pressed simultaneously from multiple directions under the drive of the drive source. This ensures that the tea leaves are subjected to uniform pressure within the pressing chamber, guaranteeing the regularity of the tea leaf shape and the consistency of its compactness after pressing. Moreover, the unique action design of the hinged mechanism driving the pressing fixtures to tilt slightly before closing further optimizes the distribution of tea leaves within the pressing chamber, avoiding uneven accumulation of tea leaves, improving the quality and efficiency of pressing, and meeting the stringent requirements for product appearance and internal quality in tea pressing production.

[0015] 2) Employing a cylinder as the drive source and equipped with corresponding sensors to monitor the cylinder's extension and retraction position in real time, the system accurately feeds back relevant information about the pressing action to the control system, thereby achieving precise control over key parameters such as pressing force and pressing time. This precise control not only ensures that each batch of tea is pressed to the same effect, but also allows for flexible adjustment of pressing parameters according to different tea varieties and pressing shapes, improving the equipment's versatility and adaptability to diverse tea pressing production scenarios.

[0016] 3) The entire pressing mechanism features a rationally designed structure. The hollow, rotating support provides a stable mounting foundation for each component. The hinged connections between the arms of the hinged mechanism, as well as the connection methods with the support and pressing fixture, ensure reliable and flexible transmission. The arc-shaped connecting plate and spherical concave pressing seat of the pressing fixture allow it to better adapt to the tea leaves during the pressing process. Meanwhile, the drive blocks and drive grooves on the periphery of the support provide effective guidance and constraint for the movement of each component, making the entire mechanism more stable during operation. This enables long-term stable tea pressing operations, reducing product quality issues caused by equipment failure or structural instability, lowering maintenance costs, and improving the equipment's lifespan and efficiency.

[0017] 4) The equipment has a clear and concise structure, with well-defined functions for each component. Preparations before startup, the tea pressing process, and subsequent maintenance are all relatively simple and easy. Operators can easily master the operating procedures and maintenance points, promptly identify and address potential problems during operation, ensuring normal equipment operation and improving the overall efficiency of tea pressing production. This makes it suitable for widespread application in the tea processing industry. Attached Figure Description

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] Figure 1 This is a three-dimensional structural diagram of the pressing mechanism used in tea pressing production according to this utility model. Detailed Implementation

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

[0021] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Please see the appendix Figure 1As shown: A pressing mechanism for tea pressing production, comprising:

[0023] A support 1, wherein the support is configured as a hollow rotating body;

[0024] A drive source 2 is fixed to one end of the bracket 1, and its output end passes through the bracket 1 to provide driving force;

[0025] A hinge mechanism 3 is arranged in a circular array on the periphery of the bracket 1, and the drive source 2 can drive the hinge mechanism 3 to extend and retract along the axis; and

[0026] A pressing fixture 4, and at least three pressing fixtures 4 are each mounted on the hinge mechanism 3;

[0027] The pressing mechanism, used for tea pressing, consists of a support frame, a drive source, a hinge mechanism, and a pressing fixture. The support frame, as the basic support structure of the entire pressing mechanism, is hollow and rotary, providing a stable mounting platform for other components. Its design facilitates uniform force distribution and rotation of the tea leaves during pressing, improving the pressing effect. The drive source, fixed at one end of the support frame, with its output end penetrating the frame, provides a stable and adjustable driving force, serving as the core power source for the entire pressing process. The hinge mechanism, arranged in a circular array on the periphery of the support frame, can extend and retract along the axis under the drive of the drive source. Its unique hinge connection structure enables force transmission and conversion, driving the pressing fixture to move precisely. There are at least three pressing fixtures, each mounted on a hinge mechanism. When the drive source drives the hinge mechanism to retract along the axis, the pressing fixtures can close to form a pressing cavity. The pressing operation of tea leaves is completed in this pressing cavity. Through the coordinated work of multiple pressing fixtures, it is ensured that the tea leaves can be pressed evenly, resulting in tea products with uniform shape and density.

[0028] Based on the above embodiments, the drive source 2 is a cylinder, which is mounted on one end of the bracket 1 via a mounting base; sensors are provided corresponding to the extension and retraction positions of the cylinder. The cylinder has advantages such as stable output force, ease of control, and simple structure, and can meet the driving force requirements during tea pressing. By adjusting the cylinder's inlet pressure and exhaust speed, its output force and movement speed can be precisely controlled, thereby adapting to the pressing needs of different types of tea, different pressing processes, and tea products of different shapes and specifications. Of course, in other embodiments, the drive source 2 can also be an electric, cylinder-type, or other reciprocating mechanical structure; this is not specifically limited here.

[0029] Based on the above embodiments, the hinge mechanism 3 includes a first pull arm 31 and a second swing arm 32 that are hinged to each other in a descending manner; one end of the second swing arm 32 is rotatably connected to the bracket 1, and the other end is slidably disposed on the pressing fixture 4; one end of the first pull arm 31 is hinged to a first auxiliary arm 33, and the other end is hinged to a second auxiliary arm 34; the first auxiliary arm 33 is hinged to the pressing fixture 4, and the second auxiliary arm 34 is drivenly connected to the output end of the drive source 2;

[0030] Wherein: When the drive source 2 drives the second auxiliary arm 34 to move along the axis, it causes the pressing fixture 4 to tilt slightly and then come together to form a pressing cavity. The hinge mechanism is mainly composed of a first pull arm and a second swing arm that are hinged to each other. This hinge connection allows for relatively flexible movement between the first pull arm and the second swing arm, and can effectively convert the direction and amplify or reduce the force during the transmission of force. One end of the second swing arm is rotatably connected to the bracket. This rotatable connection allows the second swing arm to swing around the periphery of the bracket. The angle and range of its swing are constrained by the drive groove of the drive block on the bracket. The other end of the second swing arm is slidably mounted on the pressing fixture. When the second swing arm swings under the drive of the drive source, it can drive the pressing fixture to move accordingly. One end of the first pull arm is hinged to the first auxiliary arm, and the other end is hinged to the second auxiliary arm. The first auxiliary arm is hinged to the pressing fixture, and the second auxiliary arm is driven to the output end of the drive source. When the drive source moves the second auxiliary arm along the axis, the hinged connection between the first pull arm, the second swing arm, and the first auxiliary arm causes the pressing fixture to tilt slightly before closing to form a pressing cavity. This slight tilting followed by closing motion ensures that the tea leaves are more evenly distributed between the pressing fixtures before entering the pressing cavity, avoiding uneven tea leaf accumulation that leads to inconsistent density in the pressed tea product. Furthermore, the circular array of multiple hinged mechanisms on the support allows the pressing fixture to simultaneously compress the tea leaves from multiple directions, further improving the uniformity and efficiency of the pressing process.

[0031] Based on the above embodiments, the pressing fixture 4 includes an arc-shaped connecting plate 41; a pressing seat 42 is fixedly provided at one end of the connecting plate 41; the pressing seat 42 is spherically concave. The arc-shaped design of the connecting plate is adapted to the hollow rotating body structure of the support, enabling stable installation and movement on the periphery of the support. The pressing seat, which is spherically concave, is fixedly provided at one end of the connecting plate. This spherically concave pressing seat can better conform to the shape of the tea leaves when pressing them, so that the tea leaves are subjected to uniform pressure during the pressing process, avoiding excessive or insufficient local pressure, thereby ensuring the quality of the tea products. Moreover, the spherical design facilitates the demolding of the tea products after pressing, reducing resistance and damage to the tea products during the demolding process. A connecting seat protrudes outward along the radial direction on the connecting plate. The connecting seat is the part connected to the hinge mechanism. Through the sliding connection with the second swing arm and the hinge connection with the first auxiliary arm, the pressing fixture can achieve precise movement under the drive of the hinge mechanism.

[0032] Based on the above embodiments, a connecting seat is provided on the connecting plate 41 protruding outward in the radial direction.

[0033] Based on the above embodiment, the support 1 has a drive block array on its circumference; the drive block has an inclined drive groove through it.

[0034] Based on the above embodiments, at least five sets of the hinge mechanism 3 are arranged in a circumferential array on the bracket 1.

[0035] When using the pressing mechanism for this tea pressing production, the loose tea leaves are first placed in the initial space enclosed by the pressing fixture, which is in an open state at this time. Then, the drive source (cylinder) is activated, and the piston rod of the cylinder extends, driving the second auxiliary arm of the hinge mechanism to move outward along the axis. Due to the hinge connection between the first pull arm, the second swing arm, and the first auxiliary arm, the movement of the second auxiliary arm causes the first pull arm and the second swing arm to move accordingly. The second swing arm swings under the constraint of the drive groove of the drive block on the support, simultaneously causing the pressing fixture to tilt slightly. Under the slight tilting effect of the pressing fixture, the tea leaves are more evenly distributed between the pressing fixtures. Next, as the piston rod of the cylinder continues to extend, the first pull arm and the second swing arm move further, causing the pressing fixture to gradually close and eventually form a pressing chamber. During this process, the tea leaves are gradually compressed. During the pressing process, the drive source's sensors monitor the extension and retraction position of the cylinder piston rod in real time and feed the data back to the control system. The control system precisely controls the cylinder's intake pressure and exhaust speed according to preset pressing force and stroke requirements, ensuring the accuracy of the pressing force and stroke. Once the tea leaves are pressed to the predetermined shape and density, the cylinder piston rod retracts, driving the hinge mechanism to move in the opposite direction, causing the pressing fixture to open. At this point, the pressed tea product can be removed, completing one tea pressing operation. The above steps can then be repeated for the next round of tea pressing production.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make equivalent embodiments by making some changes or modifications to the above-disclosed technical content without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A pressing mechanism for tea pressing production, characterized in that, include: A support (1), wherein the support is configured as a hollow rotating body; A drive source (2) is fixed at one end of the bracket (1), and its output end passes through the bracket (1) to provide driving force; A hinge mechanism (3) is arranged in a circular array on the periphery of the bracket (1), and the drive source (2) can drive the hinge mechanism (3) to move telescopically along the axis; and A pressing fixture (4), and at least three of the pressing fixtures (4) are each mounted on the hinge mechanism (3); Wherein: when the drive source (2) drives the hinge mechanism (3) to retract along the axis, it drives the pressing fixture (4) to close and form a pressing cavity.

2. The pressing mechanism for tea pressing production as described in claim 1, characterized in that: The driving source (2) is a cylinder, which is mounted on one end of the bracket (1) via a mounting base; sensors are provided for each extension and retraction position of the cylinder.

3. The pressing mechanism for tea pressing production as described in claim 1, characterized in that: The hinge mechanism (3) includes a first pull arm (31) and a second swing arm (32) that are hinged together in a descending manner; one end of the second swing arm (32) is rotatably connected to the bracket (1), and the other end is slidably disposed on the pressing fixture (4); one end of the first pull arm (31) is hinged to a first auxiliary arm (33), and the other end is hinged to a second auxiliary arm (34); the first auxiliary arm (33) is hinged to the pressing fixture (4), and the second auxiliary arm (34) is drivenly connected to the output end of the drive source (2); Wherein: when the driving source (2) drives the second auxiliary arm (34) to move along the axis, it causes the pressing fixture (4) to tilt slightly and then come together to form a pressing cavity.

4. The pressing mechanism for tea pressing production as described in claim 3, characterized in that: The pressing fixture (4) includes an arc-shaped connecting plate (41); a pressing seat (42) is fixed at one end of the connecting plate (41); the pressing seat (42) is spherically concave.

5. The pressing mechanism for tea pressing production as described in claim 4, characterized in that: A connecting seat is provided on the connecting plate (41) protruding outward in the radial direction.

6. The pressing mechanism for tea pressing production as described in claim 1, characterized in that: The bracket (1) has drive blocks arranged in an array on its periphery; the drive blocks are provided with drive grooves that are inclined through them.

7. The pressing mechanism for tea pressing production as described in claim 1, characterized in that: At least five sets of the hinge mechanism (3) are arranged in a circumferential array on the support (1).

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