Folding and bonding integrated device for tea packaging box

Abstract

The utility model provides a folding and bonding integrated device for a tea packaging box, which relates to the technical field of tea production and comprises a horizontal conveying mechanism, and a folding unit, a gluing unit, a primary pressing unit and a temperature-control pressure-maintaining shaping conveying channel are sequentially arranged along the conveying direction of the horizontal conveying mechanism; the bagged tea pushing-in mechanism is arranged on one side of the horizontal conveying mechanism; the temperature-control pressure-maintaining shaping conveying channel comprises an upper synchronous conveying belt and a lower synchronous conveying belt which are used for clamping and conveying tea packaging boxes, and a heating shaping section and a cooling shaping section which are sequentially arranged along the upper synchronous conveying belt and the lower synchronous conveying belt. The bonding part is heated through the heating shaping section, sufficient flowing and infiltration of the bonding agent are promoted, then rapid cooling and fixing are conducted through the cooling shaping section, the internal stress of the packaging box is eliminated, the bonding strength and the shape stability of the box body are improved, and the packaging quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of tea production technology, and in particular to an integrated device for folding and gluing tea packaging boxes. Background Technology

[0002] As an important consumer product, the quality of tea packaging directly affects the product's appeal and brand image. Traditional tea packaging box production, especially processes involving folding, filling, gluing, and sealing, often relies heavily on manual labor or segmented semi-automatic equipment.

[0003] Manual operation or traditional semi-automatic equipment struggles to guarantee consistent and stable quality in the bonding process. For example, key parameters such as the amount of hot melt adhesive applied, the pressing pressure, and the holding time are difficult to control precisely, easily leading to poor adhesion, adhesive overflow, indentations, or flap warping—all aesthetic and structural defects. The inefficiency and quality fluctuations of manual operation are particularly pronounced under high-speed production demands.

[0004] Existing automated packaging equipment still has limitations when handling products like tea packaging boxes, which require high standards of appearance and box rigidity. Many general-purpose box-gluing or cartoning machines, while capable of basic folding, gluing, and pressing functions, offer relatively simple post-bonding processing, typically relying on room-temperature pressing or short-time pressing for shaping. This simplistic post-processing method fails to adequately ensure good wetting and bonding between the adhesive and the substrate, and it is also difficult to effectively eliminate the internal stress generated during the forming and bonding process. This can easily lead to problems such as glue separation, deformation, or unstable box shape during subsequent storage or transportation, affecting the final product quality.

[0005] Therefore, it is necessary to improve the existing tea packaging box folding and gluing technology to overcome the shortcomings of the existing technology. Utility Model Content

[0006] To overcome the problems existing in related technologies, the purpose of this utility model is to provide an integrated folding and bonding device for tea packaging boxes. This device, by setting up a folding unit, a glue application unit, a preliminary pressing unit, and a temperature-controlled pressure-holding and shaping conveying channel with the function of heating and shaping before cooling and shaping, can overcome the problems of weak bonding, glue overflow, indentation, flap warping, glue separation, deformation, or unstable box shape caused by inaccurate glue application and pressing control and simple post-bonding processing in the bonding process of tea packaging boxes in the prior art. This improves the bonding quality, finished product appearance, and production efficiency of tea packaging boxes.

[0007] A tea packaging box folding and gluing integrated device includes a horizontal conveying mechanism for receiving and conveying unfolded tea packaging boxes;

[0008] Along the conveying direction of the horizontal conveying mechanism, a folding unit, an adhesive application unit, an initial pressing unit, and a temperature-controlled pressure-holding shaping conveying channel are sequentially provided;

[0009] A bagged tea pushing mechanism is provided on one side of the horizontal conveying mechanism.

[0010] The folding unit is used to fold the two end flaps of the tea packaging box in a predetermined folding sequence.

[0011] The adhesive application unit is used to apply adhesive to the first wing of the tea packaging box;

[0012] The initial pressing unit is used to initially press the first wing coated with adhesive to the second wing of the tea packaging box;

[0013] The temperature-controlled pressure-holding and shaping conveying channel includes upper and lower synchronous conveyor belts for clamping and conveying tea packaging boxes, and heating and shaping sections and cooling and shaping sections arranged sequentially along the upper and lower synchronous conveyor belts;

[0014] The heating and shaping section includes a first heat-conducting wall disposed on both sides of the upper and lower synchronous conveyor belts and a heating module for heating the first heat-conducting wall;

[0015] The cooling and shaping section includes a second heat-conducting wall located on both sides of the upper and lower synchronous conveyor belts and a cooling module for cooling the second heat-conducting wall.

[0016] By integrating folding, bagged tea feeding, glue application, initial pressing, and temperature-controlled pressure-setting conveying channels into one system, fully automated continuous production of tea packaging boxes is achieved, from the unfolded state to final shaping, filling, and high-quality gluing and sealing. In particular, heating the bonding areas through the heating and shaping section promotes full flow and wetting of the adhesive, followed by rapid cooling and fixing through the cooling and setting section. This effectively eliminates internal stress in the packaging box, significantly improves the bonding strength and shape stability of the box, and avoids common problems in traditional processes such as glue overflow, glue separation, indentation, and finished product deformation. This greatly improves packaging quality and production efficiency, and reduces reliance on manual labor.

[0017] Furthermore, the adhesive application unit includes a wide-band nozzle and an adhesive supply system for supplying adhesive to the wide-band nozzle;

[0018] The wide-band nozzle has a narrow, slit-like lip structure extending in the vertical direction.

[0019] The adhesive application unit uses a wide-band nozzle, especially its narrow, slit-like lip structure extending vertically, which can form a uniform and continuous strip-shaped adhesive film. This ensures the consistency of the adhesive application area and thickness on the first wing, improves the bonding strength, and effectively avoids problems such as uneven application, missed application, or local overflow that may be caused by traditional dot or line adhesive application, thereby improving the appearance and cleanliness of the finished product.

[0020] Furthermore, the contact surfaces of the first and second heat-conducting walls with the tea packaging box are both smooth planes.

[0021] The contact surfaces of the first and second heat-conducting walls with the tea packaging box are both smooth planes, which effectively reduces the friction between the tea packaging box and the heat-conducting walls when the tea packaging box is transported in the temperature-controlled pressure-holding and shaping conveying channel, preventing scratches or indentations on the surface of the packaging box, and ensuring the smoothness and aesthetics of the finished packaging box surface.

[0022] Furthermore, both the first heat-conducting wall and the second heat-conducting wall have exhaust grooves on their smooth surfaces, and the exhaust grooves are arranged along their length.

[0023] Exhaust grooves are provided along the length of the smooth surfaces of the first and second heat-conducting walls. This helps to remove air or trace amounts of water vapor that may exist between the packaging box and the heat-conducting walls during the heating and shaping section. This avoids bulging of the packaging box surface or uneven heating due to gas expansion. It also helps to promote the exchange of hot and cold air in the cooling and shaping section, thereby improving the heat transfer efficiency and the uniformity of the shaping effect.

[0024] Furthermore, the initial pressing unit includes a pressing guide channel, which gradually converges inward from top to bottom and connects to the first heat-conducting wall.

[0025] The pressing guide channel set in the initial pressing unit has a structure that gradually narrows inward from top to bottom. This structure can progressively guide and pre-press the tea packaging box flaps that have been coated and initially bonded with adhesive. This ensures that the flaps are effectively positioned and initially bonded before entering the temperature-controlled pressure-holding and shaping conveying channel, preventing flap misalignment and laying a good foundation for subsequent heating, shaping and cooling. At the same time, its connection with the first heat-conducting wall ensures a smooth transition during the conveying process.

[0026] Furthermore, the contact surface between the upper and lower synchronous conveyor belts and the tea packaging box is covered with a polytetrafluoroethylene coating or a silicone layer.

[0027] The contact surfaces between the upper and lower synchronous conveyor belts and the tea packaging boxes are covered with a polytetrafluoroethylene coating or a silicone layer. These materials have good high-temperature resistance, low coefficient of friction, and anti-adhesion properties. They can effectively prevent high-temperature damage or adhesion to the surface of the tea packaging boxes during the heating and shaping section, and reduce frictional resistance during the conveying process, ensuring smooth conveying and protection of the packaging box surface, and extending the service life of the conveyor belt.

[0028] Furthermore, the heating module is a resistance heating wire, an electric heating tube, or an induction heating coil;

[0029] The heating module is attached to or embedded in the first heat-conducting wall.

[0030] The heating module uses resistance heating wire, electric heating tube or induction heating coil, etc., and is closely attached to or embedded in the first heat-conducting wall. This achieves efficient and rapid heat transfer to the first heat-conducting wall, ensuring that the first heat-conducting wall can quickly reach and stably maintain the preset heating and shaping temperature. This improves heating efficiency and temperature control accuracy, and is conducive to the full activation of the adhesive and the uniform heating and shaping of the packaging box.

[0031] Furthermore, the cooling module is a circulating coolant channel disposed inside the second heat-conducting wall, or a semiconductor refrigeration chip that is closely attached to the second heat-conducting wall.

[0032] The cooling module uses a circulating coolant channel or a semiconductor cooling chip that is closely attached to the second heat-conducting wall. It can efficiently remove heat from the second heat-conducting wall, realize rapid and uniform cooling and shaping of tea packaging boxes, shorten the curing time of adhesive and the cooling cycle of packaging boxes, improve the shaping effect and production cycle, and at the same time ensure the stability and controllability of the cooling process.

[0033] Furthermore, the bagged tea pushing mechanism includes a tea bag feeding hopper, a tea bag conveyor belt that transports the tea bags from the feeding hopper to the pushing position, and a push rod assembly located at the pushing position.

[0034] The tea bag conveyor belt moves synchronously with the horizontal conveyor mechanism;

[0035] The pusher assembly is used to push the tea bag into the partially folded tea packaging box.

[0036] The system consists of a tea bag feeding hopper, a tea bag conveyor belt that moves synchronously with the horizontal conveyor, and a pusher assembly, which constitutes a bagged tea pushing mechanism. This system enables the automatic and orderly supply of bagged tea and accurate, timed pushing into the partially folded tea packaging box. It replaces manual filling, improves the automation, speed, and accuracy of material filling, and ensures the continuity and overall efficiency of the packaging process.

[0037] Furthermore, the horizontal conveying mechanism includes a conveying chain, a plurality of bearing components arranged at equal intervals along the length of the conveying chain, and guide rails located above both sides of the conveying chain. Each bearing component is used to support a tea packaging box.

[0038] The supporting component includes an upwardly protruding positioning block for limiting the front and rear position of the tea packaging box, and a tray for supporting the bottom of the tea packaging box.

[0039] The horizontal conveying mechanism uses a conveyor chain and equally spaced load-bearing components. In particular, the upward-protruding positioning blocks and bottom support plates on the load-bearing components, combined with the guide rails on both sides, can stably support and accurately position the unfolded tea packaging boxes, preventing the boxes from shifting or changing their posture during the conveying process. This ensures that the boxes can accurately and orderly enter the subsequent folding, gluing, and other units, providing a fundamental guarantee for the automated operation accuracy of the entire integrated device.

[0040] The beneficial effects of this utility model are as follows:

[0041] This utility model provides an integrated folding and bonding device for tea packaging boxes. The device continuously conveys unfolded tea packaging boxes via a horizontal conveyor mechanism, passing them sequentially through a folding unit, a bagged tea feeding mechanism (filling from one side), a gluing unit, and a preliminary pressing unit, completing the basic shaping, material filling, and preliminary bonding of the packaging box. After preliminary bonding, the packaging box enters a special temperature-controlled pressure-holding and shaping conveyor channel. This channel is equipped with upper and lower synchronous conveyor belts for clamping and conveying the packaging box, and along the conveying direction are sequentially arranged a heating and shaping section and a cooling and shaping section. The heating and shaping section heats the bonding area of ​​the packaging box through first heat-conducting walls on both sides, and then the cooling and shaping section cools and shapes the packaging box through second heat-conducting walls on both sides.

[0042] When the initially bonded packaging box passes through the heated shaping section, the heat transferred by the first heat-conducting wall allows the adhesive to reach its optimal flow and wetting state. This allows the adhesive to penetrate more fully into the paper fibers, forming a stronger physical and chemical bond, thereby improving bond strength and durability. At the same time, moderate heating also gives the paper a certain degree of plasticity, helping to eliminate internal stress caused by folding or initial pressing, making the bonded area smoother, preventing flap warping, and improving the appearance of the finished product.

[0043] The second heat-conducting wall rapidly absorbs heat, causing the adhesive to cool and solidify quickly, and restoring the paper's stiffness from its slightly softened state after heating. This rapid cooling locks in the adhesive state, preventing displacement or strength reduction due to internal stress rebound or external disturbances during slow cooling, further ensuring the bond's strength. Simultaneously, the restoration of paper stiffness ensures the final shape of the packaging box remains stable and is less prone to deformation. This effectively solves problems such as weak adhesion, glue overflow, deformation, and delamination caused by simple post-bonding processing in existing technologies, significantly improving the adhesive strength, appearance quality, and structural stability of tea packaging boxes. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the integrated folding and gluing device for tea packaging boxes provided in this application;

[0045] Figure 2 This is a schematic diagram of the horizontal conveyor mechanism provided in this application receiving the unfolded tea packaging box at its entrance;

[0046] Figure 3 This is a schematic diagram of the temperature-controlled pressure-holding shaping conveying channel provided in this application after removing the first and second heat-conducting walls on one side;

[0047] Figure 4 This is a top view of the temperature-controlled pressure-holding shaping conveying channel provided in this application;

[0048] Figure 5 This is a schematic diagram of the wide-band nozzle provided in this application;

[0049] Figure 6 This is a schematic diagram of the push rod assembly provided in this application;

[0050] Figure 7 This is a schematic diagram of the folding rocker arm provided in this application;

[0051] Figure 8 This is a schematic diagram of the folding unit provided in this application;

[0052] Figure label:

[0053] 100. Horizontal conveying mechanism;

[0054] 200. Folding unit; 210. Folding rocker arm;

[0055] 300. Glue application unit; 310. Wide-band nozzle; 311. Narrow slit-shaped lip structure;

[0056] 400. Initial pressing unit; 410. Pressing guide channel;

[0057] 500. Temperature-controlled pressure-holding and shaping conveying channel; 510. Upper and lower synchronous conveyor belts; 520. First heat-conducting wall; 530. Second heat-conducting wall;

[0058] 600. Bagged tea feeding mechanism; 610. Push rod assembly; 620. Tea bag conveyor belt. Detailed Implementation

[0059] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0060] Example 1

[0061] like Figures 1 to 8 As shown, this embodiment provides an integrated folding and bonding device for tea packaging boxes, mainly including: a horizontal conveying mechanism 100, a folding unit 200, a bagged tea pushing mechanism 600, a gluing unit 300, a preliminary pressing unit 400, and a temperature-controlled pressure-holding and shaping conveying channel 500. These units are arranged sequentially along the conveying direction of the horizontal conveying mechanism 100, forming an automated production line.

[0062] The horizontal conveyor mechanism 100 is used to receive and convey unfolded, flat tea packaging boxes at a predetermined rhythm. In this embodiment, the horizontal conveyor mechanism 100 uses a conveyor chain, with multiple support components arranged at equal intervals along the length of the conveyor chain. Each support component is designed with an upwardly protruding positioning block to limit the front-to-back position of the tea packaging box during conveying; it also has a flat support plate to stably support the bottom of the tea packaging box. Guide rails are provided above both sides of the conveyor chain to further assist in the lateral positioning and stability of the tea packaging box during conveying.

[0063] The folding unit 200 is disposed on the conveying path of the horizontal conveying mechanism 100 and is used to initially fold and shape the flat tea packaging box that is conveyed. In this embodiment, the folding unit 200 includes at least two sets of symmetrical or sequentially operating folding mechanisms. These folding mechanisms, such as folding push rods or folding rocker arms 210 driven by servo motors or cylinders, can fold several flaps at both ends of the tea packaging box upward or inward along their preset indentation lines in a preset sequence to form a partially open box structure, preparing for the subsequent insertion of bagged tea.

[0064] A bagged tea pushing mechanism 600 is located on one side of the horizontal conveying mechanism 100, corresponding to the opening of the packaging box formed by the folding unit 200. In this embodiment, the bagged tea pushing mechanism 600 includes a tea bag feeding hopper for storing pre-packaged bagged tea. A vibration mechanism is provided at the bottom of the feeding hopper to assist the orderly falling of the tea bags. After the tea bags come out of the feeding hopper, they fall onto a tea bag conveyor belt 620, which transports the tea bags to a push-in position. The running speed of the tea bag conveyor belt 620 is synchronized with the conveying speed of the horizontal conveying mechanism 100 to ensure that the tea bags correspond one-to-one with the packaging boxes to be filled. A push rod assembly 610 is provided at the push-in position, which includes a push plate driven by a linear cylinder or electric push rod. When the partially formed tea packaging box reaches the predetermined position and the tea bag also reaches the push-in position, the push rod assembly 610 actuates, horizontally pushing the tea bag from the tea bag conveyor belt 620 into the packaging box.

[0065] The adhesive application unit 300 is located downstream of the tea bag feeding mechanism 600 and is used to apply adhesive to the flaps of the tea packaging box to be bonded. In this embodiment, the adhesive application unit 300 includes a wide-band nozzle 310 and an adhesive supply system. The wide-band nozzle 310 has a narrow, slit-like lip structure 311 extending along its width direction. The adhesive supply system, such as a hot melt adhesive machine in conjunction with a gear pump, continuously and stably supplies hot melt adhesive to the wide-band nozzle 310. The adhesive application unit 300 also includes a nozzle positioning mechanism, such as an XYZ triaxial linear module driven by a servo motor, for precisely controlling the position and movement trajectory of the wide-band nozzle 310 relative to the first flap, ensuring that the adhesive is applied evenly and accurately to the predetermined area.

[0066] The initial pressing unit 400 is located downstream of the adhesive coating unit 300 and is used to initially press and bond the first flap coated with adhesive to another flap of the tea packaging box. In this embodiment, the initial pressing unit 400 includes a pressing guide channel 410. The inlet end of the pressing guide channel 410 is wider and then gradually narrows inward along the conveying direction of the packaging box. The curved surface of the narrowing conforms to the shape of the folded tea packaging box, and the inner wall surface is smooth. As the packaging box passes through this guide channel, its flaps are gradually pressed towards the bonding position. The outlet end of the guide channel smoothly connects to the first heat-conducting wall 520 of the temperature-controlled pressure-holding and shaping conveying channel 500.

[0067] The temperature-controlled pressure-holding and shaping conveyor channel 500 is located downstream of the initial pressing unit 400 and is used for the final heating, shaping, and cooling of the initially bonded tea packaging boxes. This channel mainly consists of upper and lower synchronous conveyor belts 510, a heating and shaping section, and a cooling and shaping section.

[0068] The upper and lower synchronous conveyor belts 510 are arranged along the entire length of the channel to clamp and synchronously transport tea packaging boxes with controllable pressure. In this embodiment, the inner surface of the upper and lower synchronous conveyor belts 510 that contacts the tea packaging boxes is covered with a high-temperature resistant polytetrafluoroethylene coating or a silicone layer.

[0069] The heating and shaping section is located at the front of the temperature-controlled, pressure-holding, and shaping conveying channel 500. It includes first heat-conducting walls 520 located on both sides of the upper and lower synchronous conveyor belts 510. The contact surface between the first heat-conducting wall 520 and the tea packaging box is a smooth plane. Several venting grooves are formed along the length of this smooth plane. A heating module is used to heat the first heat-conducting wall 520. In this embodiment, the heating module uses a resistance heating wire or an electric heating tube, which is closely attached to or embedded in the interior or outer surface of the first heat-conducting wall 520, and the surface temperature of the first heat-conducting wall 520 is precisely controlled by a temperature controller.

[0070] The cooling and shaping section is located downstream of the heating and shaping section. It includes second heat-conducting walls 530 located on both sides of the upper and lower synchronous conveyor belts 510. The contact surface between the second heat-conducting wall 530 and the tea packaging box is also a smooth plane, and it also has exhaust grooves. A cooling module is used to cool the second heat-conducting wall 530. In this embodiment, the cooling module uses a channel for circulating coolant inside the second heat-conducting wall 530, or a semiconductor cooling chip is tightly attached to the outer surface of the second heat-conducting wall 530. Temperature sensors are installed on the inner surfaces of the first heat-conducting wall 520 and the second heat-conducting wall 530 to monitor the wall temperature in real time and achieve closed-loop control.

[0071] The working process of the device in this embodiment is as follows:

[0072] 1. The unfolded tea packaging box is placed on the carrying component of the horizontal conveyor mechanism 100 and conveyed forward.

[0073] 2. The packaging box passes through the folding unit 200 in sequence, and the two end flaps are folded up in a predetermined order to form a partially open box.

[0074] 3. When the packaging box is conveyed to the corresponding position of the bagged tea pushing mechanism 600, the prepared bagged tea is pushed into the box by the pushing mechanism.

[0075] 4. The filled packaging box is then conveyed to the glue application unit 300. Under the drive of the controller and positioning mechanism, the wide-band nozzle 310 applies hot melt adhesive evenly to the first wing of the packaging box.

[0076] 5. After the packaging box is coated with glue, it enters the initial pressing unit 400. The first wing and the second wing are initially pressed and bonded under the action of the pressing guide channel 410.

[0077] 6. The initially bonded packaging box enters the temperature-controlled pressure-holding shaping conveyor channel 500. First, it passes through the heating and shaping section. Under the heating of the first heat-conducting wall 520 and the pressure-holding action of the upper and lower synchronous conveyor belts 510, the adhesive is fully activated, and the bonded parts are shaped.

[0078] 7. The packaging box enters the cooling and shaping section. Under the cooling effect of the second heat-conducting wall 530 and the continuous pressure of the upper and lower synchronous conveyor belts 510, the adhesive cools and solidifies rapidly, and the shape of the packaging box is finally determined.

[0079] 7. The finished tea packaging boxes are output from the end of the temperature-controlled pressure-maintaining shaping conveyor channel 500.

[0080] All units of the entire device are connected to a central controller, which performs unified and coordinated control through a preset program.

[0081] This embodiment achieves fully automated and precise production of tea packaging boxes from unfolding to high-quality finished products by highly integrating a high-precision servo or cylinder-driven folding unit 200, a tea-pushing mechanism with vibration and synchronous conveying, a glue-applying unit 300 with a servo-positioned wide-band nozzle 310, a pressure-guiding channel 410-type initial pressing unit 400, and a temperature-controlled pressure-holding and shaping conveying channel 500 employing efficient heat conduction and active cooling. Through the precise coordination of each unit, especially the "heat-plastic first, then cool" temperature-controlled pressure-holding and shaping process, deep wetting and bonding of the adhesive and paper fibers and effective elimination of internal stress are ensured. This significantly improves the bonding strength, the stiffness and stability of the finished box shape, and effectively avoids appearance and structural defects such as glue overflow, indentation, and glue separation. Ultimately, it achieves a dual improvement in production efficiency and product quality, meeting the stringent requirements of high-end tea packaging for exquisite appearance and stable quality.

[0082] Example 2

[0083] Reference Figures 1 to 8 This embodiment provides another integrated folding and gluing device for tea packaging boxes, which aims to achieve efficient and automated folding, filling, gluing and sealing of tea packaging boxes, and ensure the quality and appearance of the final product.

[0084] In this embodiment, the horizontal conveyor mechanism 100 is used to receive and transport the unfolded tea packaging boxes. This mechanism can employ a multi-segment synchronous belt structure, with each segment of the synchronous belt connected end-to-end. Driven independently or in conjunction with a motor, it ensures a smooth transition of the tea packaging boxes between workstations. The surface of the synchronous belt can be made of a material with a suitable coefficient of friction, and adjustable guide strips can be installed above or on both sides of it to assist in positioning tea packaging boxes of different sizes.

[0085] The folding unit 200 is positioned on the conveying path of the horizontal conveying mechanism 100. In this embodiment, the unit consists of a folding assembly driven by a cam-linkage mechanism. A precisely designed cam profile controls the movement of the linkage, driving the folding blade or folding plate to fold the flaps of the tea packaging box according to a predetermined sequence and trajectory. This method offers advantages such as stable operation and relatively simple maintenance for mass production of fixed box types.

[0086] A bagged tea feeding mechanism 600 is located on one side of the horizontal conveying mechanism 100 and is used to fill bagged tea into partially folded tea packaging boxes. This mechanism includes a tea bag storage trough with a certain capacity and an outlet at the bottom. A small conveying device (e.g., a small chain conveyor belt or vibrating conveyor) transports the tea bags individually or quantitatively to a feeding station. Next to the feeding station, a reciprocating pusher plate driven by a cylinder or small motor is installed. When both the tea packaging box and the tea bags reach the predetermined position, the pusher plate actuates, horizontally pushing the tea bags into the opening of the packaging box. The entire feeding process is synchronized with the rhythm of the horizontal conveying mechanism 100.

[0087] The adhesive application unit 300 is used to apply adhesive to designated flaps on the tea packaging box. In this embodiment, a wide-band nozzle 310 is also used to ensure uniform application and coverage. This wide-band nozzle 310 can be fixedly mounted on a bracket with a precision manual fine-tuning mechanism (e.g., via a lead screw and nut pair or a fine-tuning knob). The operator can precisely adjust and lock the nozzle's position (e.g., height, angle, lateral position) when changing different batches of products or performing equipment maintenance. The adhesive supply system is connected to the hot melt adhesive generator via a hose to stably supply the adhesive.

[0088] The initial pressing unit 400 is used to initially press and bond the glued flaps together with another flap. In this embodiment, the unit consists of a pair of opposing pressing plates, driven independently or in conjunction with cylinders. The contact surfaces of the pressing plates can be covered with an elastic material (such as industrial rubber) to accommodate minor unevenness on the surface of the tea packaging box and to distribute pressure. The stroke and pressure of the cylinders are adjustable to achieve effective initial pressing of tea packaging boxes of different thicknesses and materials.

[0089] The structure and working principle of the temperature-controlled pressure-holding shaping conveying channel 500 are similar to those of the aforementioned embodiments, namely, it includes a heating and shaping section and a cooling and shaping section arranged in sequence, and the tea packaging box is clamped, conveyed and pressure-held by the upper and lower synchronous conveyor belts 510.

[0090] In the heating and shaping section, the heating module of the first heat-conducting wall 520, in this embodiment, adopts a flexible heating film wrapped around the outside of the heat-conducting wall or embedded inside it.

[0091] In the cooling and shaping section, the cooling module of the second heat-conducting wall 530 cools down using a low-temperature heat transfer medium (such as cold air) provided by the compressor.

[0092] Work process summary:

[0093] 1. The unfolded tea packaging box is conveyed by a horizontal conveyor mechanism 100 consisting of a multi-segment synchronous belt, and then passes through a folding unit 200 driven by a cam linkage mechanism for initial folding.

[0094] 2. At the bagged tea pushing mechanism 600, tea bags supplied by the storage trough and small conveying device are pushed into the partially formed packaging box by a reciprocating pusher plate.

[0095] 3. The packaging box moves to the adhesive application unit 300, where the fixedly installed wide-band nozzle 310 applies adhesive to its designated vanes.

[0096] 4. The packaging box undergoes initial pressing through the initial pressing unit 400, which consists of a pressing plate driven by a cylinder.

[0097] 5. The initially glued packaging box enters the temperature-controlled pressure-holding and shaping conveyor channel 500, where it undergoes heating and shaping in the heating and shaping section.

[0098] 6. Cooling and shaping are carried out in the cooling and shaping section to finally output high-quality finished products.

[0099] This embodiment employs a combination of structures including a multi-segment synchronous belt conveyor, a folding unit 200 driven by a cam linkage, a bagged tea-pushing mechanism 600 combining a storage trough and a reciprocating pusher, a glue-applying unit 300 with a fixed, manually adjustable wide-band nozzle 310, a primary pressing unit 400 with a cylinder-driven pressing plate, and a temperature-controlled pressure-holding and shaping conveying channel 500 using flexible heating film heating and compressor cooling. This combination achieves automated folding, filling, glue application, and high-quality bonding and sealing of tea packaging boxes. Through the stable and reliable operation of each unit, the temperature-controlled pressure-holding process utilizes a flexible heating film for uniform heating and shaping, and a compressor cooling medium for efficient cooling and shaping, ensuring full activation and penetration of the adhesive, effective elimination of internal stress, and rapid locking of the adhesive bond. This significantly improves the final product's bonding strength, appearance smoothness, and box shape stability. Simultaneously, the application of mechanical and cylinder-driven structures provides a highly stable and reliable automated solution for fixed box shapes and mass production, effectively improving the packaging quality of finished boxed tea.

[0100] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0101] Furthermore, it should be noted that the use of terms such as "first" and "second" is merely for ease of distinction, and unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A folding and gluing integrated device for tea packaging boxes, characterized in that, Includes a horizontal conveyor mechanism (100) for receiving and conveying unfolded tea packaging boxes; Along the conveying direction of the horizontal conveying mechanism (100), a folding unit (200), an adhesive application unit (300), an initial pressing unit (400), and a temperature-controlled pressure-holding shaping conveying channel (500) are sequentially provided; A bagged tea pushing mechanism (600) is provided on one side of the horizontal conveying mechanism (100); The folding unit (200) is used to fold the two end flaps of the tea packaging box in a predetermined folding sequence; The adhesive application unit (300) is used to apply adhesive to the first wing of the tea packaging box; The initial pressing unit (400) is used to initially press the first wing coated with adhesive to the second wing of the tea packaging box; The temperature-controlled pressure-holding shaping conveying channel (500) includes an upper and lower synchronous conveyor belt (510) for clamping and conveying tea packaging boxes, and a heating and shaping section and a cooling and shaping section arranged sequentially along the upper and lower synchronous conveyor belt (510). The heating and shaping section includes a first heat-conducting wall (520) disposed on both sides of the upper and lower synchronous conveyor belts (510) and a heating module for heating the first heat-conducting wall (520); The cooling and shaping section includes a second heat-conducting wall (530) located on both sides of the upper and lower synchronous conveyor belts (510) and a cooling module for cooling the second heat-conducting wall (530).

2. The integrated folding and gluing device for tea packaging boxes according to claim 1, characterized in that: The adhesive application unit (300) includes a wide-band nozzle (310) and an adhesive supply system for supplying adhesive to the wide-band nozzle (310); The wide-band nozzle (310) has a narrow, slit-like lip structure (311) extending in the vertical direction.

3. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The contact surfaces of the first heat-conducting wall (520) and the second heat-conducting wall (530) with the tea packaging box are both smooth planes.

4. The tea packaging box folding and gluing integrated device according to claim 3, characterized in that: The first heat-conducting wall (520) and the second heat-conducting wall (530) are both provided with exhaust grooves on their smooth planes, and the exhaust grooves are arranged along their length.

5. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The initial pressing unit (400) includes a pressing guide channel (410), which gradually converges from top to bottom and connects to the first heat-conducting wall (520).

6. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The upper and lower synchronous conveyor belts (510) are covered with a polytetrafluoroethylene coating or a silicone layer on the contact surface with the tea packaging box.

7. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The heating module is a resistance heating wire, an electric heating tube, or an induction heating coil; The heating module is attached to or embedded in the first heat-conducting wall (520).

8. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The cooling module is a circulating coolant channel located inside the second heat-conducting wall (530), or a semiconductor cooling chip that is closely attached to the second heat-conducting wall (530).

9. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The bagged tea pushing mechanism (600) includes a tea bag feeding hopper, a tea bag conveyor belt (620) for conveying tea bags from the feeding hopper to the pushing position, and a push rod assembly (610) located at the pushing position. The tea bag conveyor belt (620) moves synchronously with the horizontal conveying mechanism (100); The pusher assembly (610) is used to push the tea bag into the partially folded tea packaging box.

10. The tea packaging box folding and gluing integrated device according to claim 1, characterized in that: The horizontal conveying mechanism (100) includes a conveying chain, a plurality of bearing components arranged at equal intervals along the length of the conveying chain, and guide rails located above both sides of the conveying chain. Each bearing component is used to support a tea packaging box. The supporting component includes an upwardly protruding positioning block for limiting the front and rear position of the tea packaging box, and a tray for supporting the bottom of the tea packaging box.

Images