Liupao tea cake pressing and forming device

Abstract

The utility model provides a Liupao tea cake pressing and forming device, and relates to the technical field of tea cake forming equipment, the Liupao tea cake pressing and forming device comprises a base, a mold, a forming groove arranged at one end of the base, a telescopic piece arranged at the other end of the base, a pressing piece arranged at the other end of the base, and a pressing piece arranged at the other end of the telescopic piece, the telescopic piece provides telescopic force in the direction of a mold, the pressure plate is arranged at the output end of the telescopic piece and is in press fit with the mold, one end of the hinge rod is circumferentially hinged to the contact face of the pressure plate and the mold, and the other end of the hinge rod provides a circumferential radial moving path. According to the tea pressing device, through the arrangement of the multiple circumferentially-arranged extension blocks, in the downward pressing action process and the process that the extension blocks achieve extension through the hinge blocks, the cambered surface degree of the elastic pieces is enhanced through the pressing rods, and the completeness and arc-shaped extension of tea cakes are guaranteed while tea leaves are pressed.

Description

Technical Field

[0001] This utility model relates to the technical field of tea cake forming equipment, specifically to a Liubao tea cake pressing and forming device. Background Technology

[0002] As an important category of traditional Chinese dark tea, the pressing and shaping of Liubao tea cakes is a crucial process that determines the quality of the tea and its subsequent aging effects. Traditional Liubao tea pressing techniques rely heavily on molds, using hydraulic or mechanical pressure to compress loose tea leaves into tea cakes with a fixed shape. Existing pressing and shaping equipment typically includes a frame, a hydraulic drive system, and upper and lower mold assemblies. By controlling the pressure, holding time, and mold temperature, the tea leaves are compacted and shaped. While such equipment meets basic pressing requirements, it still faces numerous technical challenges in actual production.

[0003] However, current tea pressing devices commonly suffer from tea leaf breakage due to direct pressure during the pressing process. Because traditional molds often have rigid contact surfaces and lack adaptability to the tea leaf fiber structure during pressure application, the leaf cells are easily damaged by stress concentration when high pressure is applied instantaneously. The stems are particularly prone to breakage or splitting. Tea leaf breakage not only damages the appearance of the tea cake but also leads to excessive extraction of polyphenols, polysaccharides, and other internal substances during pressing, affecting the taste and aroma of the tea.

[0004] Therefore, we have made improvements to this and proposed a Liubao tea cake pressing and forming device. Utility Model Content

[0005] In order to achieve the above-mentioned objectives, this utility model provides a Liubao tea cake pressing and forming device to improve the above-mentioned problems.

[0006] The application is as follows:

[0007] Including the base;

[0008] A mold is provided at one end of the base, and its top is provided with a forming groove that matches the shape of the tea cake. The depth direction of the groove is parallel to the axial direction of the base.

[0009] A telescopic component, located at the other end of the base, provides a telescopic force in the direction of the mold;

[0010] A pressure plate is disposed at the output end of the telescopic component and is pressed into the mold.

[0011] The hinge rod has one end circumferentially hinged to the contact surface between the pressure plate and the mold, and the other end provides a circumferential radial movement path;

[0012] An extension block is provided on the other end of the hinge rod and moves along the moving path, and the radius of the circle formed by the extension block is smaller than the radius of the circle of the forming groove.

[0013] The pressure bar is located on the side of the hinge bar away from the pressure plate and moves in an arc when the extension block extends radially.

[0014] The pressure block is located in the inner ring formed by the plurality of extension blocks;

[0015] An elastic sheet is disposed between the extension block and the pressing block, and makes point contact with the pressing rod during its arc-shaped movement to generate bending of the pressed tea cake;

[0016] When the telescopic component causes the pressure plate to press against the mold, the extension block extends outward and causes the pressure rod to press against the elastic sheet, and the extension block and the mold are rubbed together.

[0017] Preferably, a buffer gap is provided between adjacent elastic sheets and extension blocks, the width of which is 0.5-1.2 times the thickness of the elastic sheet, to provide deformation compensation space when the pressure block shrinks radially.

[0018] Preferably, the telescopic component includes a hydraulic cylinder and a displacement sensor. The piston rod end of the hydraulic cylinder is rigidly connected to the pressure plate, the detection end of the displacement sensor is embedded in the pressure plate, and its signal output end is connected to a controller disposed in the base.

[0019] Preferably, the contact end between the pressure rod and the elastic sheet is an arc surface, allowing the elastic sheet to extend linearly.

[0020] Preferably, the bottom of the forming groove of the mold is provided with a plurality of vent holes with a diameter of 1-2 mm, the vent holes are arranged in a ring array, and the center distance between adjacent vent holes is 5-8 mm.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In the scheme of this application:

[0023] To address the problem of tea leaf breakage during vertical compression in existing technologies, this application incorporates multiple circumferentially arranged extension blocks. During the pressing action, as the extension blocks extend via hinged blocks, the pressure rod enhances the curvature of the elastic sheet, thus ensuring the integrity and curved extension of the tea cake while compressing the tea leaves. Attached Figure Description

[0024] Figure 1 A front view of a Liubao tea cake pressing and forming device provided in this application;

[0025] Figure 2This application provides a schematic diagram of the pressing block structure of a Liubao tea pressing and forming device;

[0026] Figure 3 A schematic diagram of the hinge rod structure of a Liubao tea cake pressing and forming device provided in this application;

[0027] Figure 4 This is a schematic diagram showing the positional relationship between the elastic sheet and the extension block of a Liubao tea cake forming device provided in this application.

[0028] The image shows:

[0029] 1. Base; 2. Mold; 3. Telescopic component; 31. Hydraulic cylinder; 32. Displacement sensor; 33. Controller; 4. Pressure plate; 41. Hinge rod; 42. Extension block; 43. Pressure rod; 5. Pressure block; 51. Elastic sheet. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 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 should fall within the protection scope of the present invention.

[0031] For an example, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 A Liubao tea cake pressing and forming device, comprising: a base 1;

[0032] Mold 2 is set at one end of base 1, and its top is provided with a forming groove that matches the shape of the tea cake. The depth direction of the groove is parallel to the axial direction of base 1.

[0033] The telescopic component 3 is located at the other end of the base 1 and provides telescopic force in the direction of mold 2;

[0034] Pressure plate 4 is set at the output end of telescopic component 3 and presses together with mold 2;

[0035] The hinge rod 41 has one end circumferentially hinged to the contact surface between the pressure plate 4 and the mold 2, and the other end provides a circumferential radial movement path.

[0036] An extension block 42 is set on the other end of the hinge rod 41 and moves along the moving path, and the radius of the circle formed by the extension block 42 is smaller than the radius of the circle of the forming groove.

[0037] The pressure bar 43 is located on the side of the hinge bar 41 away from the pressure plate 4, and moves in an arc when the extension block 42 extends radially.

[0038] Pressing block 5 is located in the inner ring formed by multiple extension blocks 42;

[0039] The elastic sheet 51 is disposed between the extension block 42 and the pressing block 5, and makes point contact with it during the arc movement of the pressing rod 43 to generate bending of the pressed tea cake;

[0040] When the telescopic component 3 causes the pressure plate 4 to press against the mold 2, the extension block 42 extends outward and causes the pressure rod 43 to press against the elastic sheet 51. The elastic sheet 51 is in an arc shape and fits against the tea cake. The extension block 42 and the mold 2 are rubbed together.

[0041] Existing tea cakes are made by pressing tea leaves into a cloth bag. In this device, the tea leaves in the cloth bag are placed in the forming groove of the mold 2. During the extension and retraction of the telescopic component 3, the pressure plate 4 moves and the extension block 42 naturally presses against the tea bag after it comes into contact with it. The extension block 42 moves towards the inner circle of the mold 2, and the extension block 42 pushes the tea bag flat in parallel, so that the tea leaves are stretched to a uniform length in the tea bag.

[0042] During this process, since the telescopic component 3 is controlled by the displacement sensor 32, the pressing force on the tea leaves can be controlled more precisely, and the pressing effect of the tea leaves can be improved under the control of the controller 33 to avoid leaf breakage.

[0043] At the same time, the extension block 42 gradually unfolds circumferentially under the restriction of the hinge rod 41 and gradually moves away from the tea cake. The elastic sheet 51 tends to tilt upward, and the pressure rod 43 moves along with the hinge rod 41 during the movement, causing the end to press the elastic sheet 51, so that the elastic sheet 51 is located around the pressure block 5 for secondary pressing, making the tea cake smaller in volume after pressing, and reducing the number of leaf breakages caused by the arc change of the leaves.

[0044] Furthermore, as the extension block 42 extends outwards, it can contact the inner ring of the mold 2, causing the extension block 42 to engage with the mold 2, thus preventing the mold 2 from detaching during the pressing process.

[0045] After pressing is completed, due to the loss of pressing force, the extension block 42 is pulled back to its original state by the elastic sheet 51. At this time, the extension block 42 descends and converges towards the middle and squeezes the tea bag with inward restoring force, causing the tea bag to separate from the mold 2.

[0046] Furthermore, the number of extension blocks 42 should ideally be six. During the pressing process, six dividing lines will be generated between the tea cakes due to the gaps between the elastic sheets 51, corresponding to the name of Liubao tea, making the product more competitive.

[0047] A buffer gap is provided between adjacent elastic sheets 51 and extension blocks 42. The width of the buffer gap is 0.5-1.2 times the thickness of the elastic sheet 51, providing deformation compensation space when the pressure block 5 contracts radially.

[0048] This design ensures that the elastic sheet 51 has enough space to deform elastically when subjected to force, avoiding irreversible plastic deformation due to excessive compression. At the same time, it can effectively buffer the impact force when the pressure block 5 contracts, extending the service life of the elastic sheet 51 and the entire pressure block 5 structure.

[0049] The telescopic component 3 includes a hydraulic cylinder 31 and a displacement sensor 32. The piston rod end of the hydraulic cylinder 31 is rigidly connected to the pressure plate 4. The detection end of the displacement sensor 32 is embedded in the pressure plate 4, and its signal output end is connected to the controller 33 set in the base 1.

[0050] The hydraulic cylinder 31 provides a stable and precise driving force for the pressure plate 4, ensuring that the pressure plate 4 can move according to the preset requirements; the displacement sensor 32 monitors the displacement of the pressure plate 4 in real time and accurately transmits the signal to the controller 33, so that the controller 33 can adjust the working state of the hydraulic cylinder 31 in a timely manner according to the actual displacement data, thereby achieving precise control of the movement of the pressure plate 4 and improving the stability and accuracy of the entire equipment in pressing the blades.

[0051] The contact end between the pressure bar 43 and the elastic sheet 51 is an arc surface, allowing the elastic sheet 51 to extend linearly.

[0052] The curved surface design makes the contact between the pressure bar 43 and the elastic sheet 51 smoother, reducing stress concentration during contact and lowering the risk of local damage to the elastic sheet 51. At the same time, this contact method can guide the elastic sheet 51 to extend in a linear direction, making the deformation of the elastic sheet 51 more uniform, which helps to improve the working performance and reliability of the elastic sheet 51 and ensures that the entire structure can function stably during the stress process.

[0053] The bottom of the forming groove of mold 2 is provided with multiple vent holes with a diameter of 1-2 mm. The vent holes are arranged in a ring array and the center-to-center distance between adjacent vent holes is 5-8 mm.

[0054] The vent holes allow for the timely discharge of gases generated during the tea-forming process, preventing the formation of defects such as air pockets inside the tea leaves and improving the quality of the tea. The circular array distribution ensures that the vent holes are evenly distributed at the bottom of the forming groove, guaranteeing that the gases can be discharged evenly and smoothly, further optimizing the forming effect.

[0055] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A Liupu tea cake forming device, characterized in that, include: Base (1); A mold (2) is provided at one end of the base (1), and its top is provided with a forming groove that matches the shape of the tea cake. The depth direction of the groove is parallel to the axial direction of the base (1). A telescopic component (3) is provided at the other end of the base (1) to provide a telescopic force in the direction of the mold (2); A pressure plate (4) is provided at the output end of the telescopic component (3) and is pressed together with the mold (2); The hinge rod (41) is circumferentially hinged at one end to the contact surface between the pressure plate (4) and the mold (2), and the other end provides a circumferential radial movement path; An extension block (42) is provided on the other end of the hinge rod (41) and moves along the moving path, and the radius of the circle formed by the extension block (42) is smaller than the radius of the circle of the forming groove; The pressure bar (43) is located on the side of the hinge bar (41) away from the pressure plate (4) and moves in an arc when the extension block (42) extends radially; The pressure block (5) is located in the inner ring formed by the plurality of extension blocks (42); An elastic sheet (51) is disposed between the extension block (42) and the pressing block (5), and makes point contact with the pressing rod (43) during its arc movement to generate bending of the pressed tea cake; When the telescopic component (3) causes the pressure plate (4) to press against the mold (2), the extension block (42) extends outward and causes the pressure rod (43) to press against the elastic sheet (51). The elastic sheet (51) is in an arc shape and fits against the tea cake. The extension block (42) and the mold (2) are rubbed together.

2. The Liupu tea cake forming device according to claim 1, characterized in that, A buffer gap is provided between adjacent elastic sheets (51) and extension blocks (42), the width of which is 0.5-1.2 times the thickness of the elastic sheet (51), providing deformation compensation space when the pressure block (5) contracts radially.

3. The Liupu tea cake forming device according to claim 2, characterized in that, The telescopic component (3) includes a hydraulic cylinder (31) and a displacement sensor (32). The piston rod end of the hydraulic cylinder (31) is rigidly connected to the pressure plate (4). The detection end of the displacement sensor (32) is embedded in the pressure plate (4), and its signal output end is connected to the controller (33) set in the base (1).

4. The Liupu tea cake forming device according to claim 3, characterized in that, The contact end between the pressure bar (43) and the elastic sheet (51) is an arc surface, allowing the elastic sheet (51) to extend linearly.

5. The Liupu tea briquetting device according to claim 4, characterized in that, The bottom of the forming groove of the mold (2) is provided with a plurality of ventilation holes with a diameter of 1-2 mm. The ventilation holes are arranged in a ring array and the center distance between adjacent ventilation holes is 5-8 mm.

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