Unfolding action unit of tea packaging box

Abstract

The utility model provides a tea packaging box unfolding action unit which comprises a feeding mechanism, a material taking and box opening mechanism and an auxiliary box opening mechanism. The feeding mechanism comprises a conveying belt, an inclined stock bin and a blocking assembly with an elastic blocking finger and is used for reliably supplying the flat carton blanks. The material taking and box opening mechanism comprises a rotating body, a material taking arm installed on the rotating body, a first suction cup and a synchronous driving unit. The first suction cup is driven by synchronous rotation of the rotating body and the material taking arm to pick up along a preset track and act on the first surface of the paper box blank. The auxiliary box opening mechanism comprises a supporting structure and a second suction cup and is used for adsorbing the second surface of the paper box blank and cooperating with the material taking and box opening mechanism to complete the unfolding action. Through the double-sided synergistic effect of the material taking and box opening mechanism and the auxiliary box opening mechanism, the flat paper box blank can be stably, reliably and efficiently unfolded and formed, the unfolding success rate and speed are increased, the forming quality is improved, and the stability and efficiency of the packaging process are improved.

Description

Technical Field

[0001] This utility model relates to the field of tea packaging technology, and in particular to a tea packaging box unfolding action unit. Background Technology

[0002] In the modern packaging industry, especially in the packaging of commodities such as tea, automated packaging equipment has been widely used to improve production efficiency and reduce labor costs. Among them, the automatic unfolding and forming of pre-printed, die-cut, and folded flat cardboard box blanks into three-dimensional boxes is a key link in the packaging production line, which is usually completed by a dedicated box opening or cardboard box forming unit.

[0003] Existing technologies typically use a vacuum suction cup to pick up one surface of the box blank, and then use a robotic arm to pull the box blank open through translation, rotation, or a combination of movements. However, for certain structures (such as self-locking bottom structures) or rigid cardboard boxes, it may be difficult to quickly and completely unfold the box into place using only a single component or a simple stretching action. This can easily lead to box deformation, incomplete opening of the corners, or failure to open the box, affecting packaging quality and efficiency.

[0004] Therefore, it is necessary to improve the existing tea packaging box display technology to overcome its shortcomings. Summary of the Invention

[0005] To overcome the problems in related technologies where relying on a single component or simple stretching action makes it difficult to quickly and fully unfold a specific structure or a cardboard box made of a relatively hard material, which can easily lead to box deformation, incomplete opening of the corners, or failure to open the box, thus affecting packaging quality and efficiency, this utility model aims to provide a tea packaging box unfolding action unit. This unit optimizes the collaborative structure and action mode of material picking and box opening and auxiliary box opening, which can unfold and form flat cardboard box blanks more stably, reliably, and efficiently.

[0006] The tea packaging box unfolding mechanism includes:

[0007] A feeding mechanism for accommodating and downward conveying stacked flat cardboard box blanks, the feeding mechanism including a conveyor belt, an inclined hopper at the outlet of the conveyor belt, and a blocking assembly at the outlet of the inclined hopper, the blocking assembly including a first stop finger that can swing about a pivot and an elastic element that applies a downward biasing force to the first stop finger, the first stop finger being in a blocking position under the action of the elastic element, for blocking the flat cardboard box blanks, and being lifted up by the flat cardboard box blank over the biasing force when the bottommost flat cardboard box blank is being picked up;

[0008] The material picking and opening mechanism is used to pick up the bottommost flat cardboard box blank from the outlet of the inclined hopper. The material picking and opening mechanism includes a rotating body, a picking arm rotatably mounted on the rotating body, and a synchronous drive unit. The axial direction of the picking arm is the same as the axial direction of the rotating body and is spaced apart. The picking arm is provided with two sets of first suction cups arranged radially symmetrically. The first suction cups are used to adsorb the first surface of the bottommost flat cardboard box blank. The synchronous drive unit is connected to the rotating body and the picking arm to drive the rotating body and the picking arm to rotate around their respective axes synchronously, so that the first suction cups move along a predetermined trajectory to pick up and transfer the flat cardboard box blank.

[0009] The auxiliary box opening mechanism includes a support structure and at least one second suction cup disposed on the support structure. The second suction cup is used to adsorb the second surface of the flat paper box blank. When the flat paper box blank is moved to a predetermined position by the first suction cup, the second suction cup adsorbs the second surface of the flat paper box blank to cooperate with the material picking and opening mechanism to complete the unfolding action.

[0010] Through the coordinated operation of the feeding mechanism, the picking and unpacking mechanism, and the auxiliary unpacking mechanism, high-speed, automated, and reliable picking and unfolding of flat cardboard box blanks is achieved, which improves packaging efficiency, reduces labor costs, and ensures the consistency of unpacking quality.

[0011] Furthermore, the tilting hopper includes:

[0012] An inclined bottom support is used to support the flat cardboard box blank and guide it to slide downward to the inclined hopper outlet. The bottom support is provided with a second stop finger.

[0013] A pair of lateral guide plates are arranged opposite each other, and the pair of lateral guide plates are located on both sides of the bottom support member to define the width of the inclined hopper. At least one of the lateral guide plates can be translated along the width direction of the inclined hopper.

[0014] The blocking assembly is mounted on the top guide relative to the bottom support member, and the top guide can be translated along the height direction of the inclined hopper.

[0015] By setting adjustable side guide plates and top guides, the tilting hopper can easily adapt to flat cardboard blanks of different widths and thicknesses, improving the versatility of the device. The second stop finger on the bottom support and the first stop finger (blocking component) on the top guide further enhance the control of the stacking state of the cardboard blanks in the hopper, ensuring the stability and orderliness of the downward conveying.

[0016] Furthermore, the bottom support member includes a first support beam arranged along the width direction of the inclined hopper and a first mounting block installed on the first support beam. The first mounting block is slidably connected to the first support beam and fixed by fasteners. One end of the first mounting block is connected to the conveyor belt, and the other end is equipped with the second stop finger.

[0017] The top guide includes a second support beam and a height adjustment mechanism. The second support beam is fixedly connected to the first support beam through the height adjustment mechanism. The blocking assembly is slidably connected to the second support beam and fixed by fasteners. The blocking assembly is arranged along the conveying direction of the inclined hopper, and the first stop finger and the second stop finger are arranged opposite to each other.

[0018] By fixing the first mounting block and the blocking assembly with sliding connections and fasteners, the positions of the second stop finger and the blocking assembly are precisely, stably, and adjustable. The second support beam is connected to the frame by a height adjustment mechanism, ensuring the reliability of the height adjustment of the top guide. The relative setting of the first stop finger and the second stop finger optimizes the dual control of the carton blank in the hopper and at the outlet, further improving the accuracy and reliability of the feeding.

[0019] Furthermore, the height adjustment mechanism includes a main frame, on which a slide rail, a lead screw, and a slider are provided along the height direction of the inclined hopper. The slider is slidably connected to the slide rail and threadedly connected to the lead screw. One end of the lead screw is provided with a handwheel, and the second support beam is fixedly connected to the slider.

[0020] The structure consists of a slide rail, a lead screw, and a slider, and is operated with a handwheel. This allows for precise, stable, and convenient adjustment of the height of the top guide (and the first stop finger). The operation is intuitive and labor-saving, and it can quickly adapt to paper box blanks of different thicknesses, improving production and debugging efficiency and the applicability of the device.

[0021] Furthermore, the first suction cup is a pneumatic suction cup, the picking arm is connected to the rotating body through a bearing seat, the picking arm is provided with two air channels, the bearing seat is provided with two air chambers, and the two air channels are respectively connected to the two air chambers;

[0022] The material handling and opening mechanism also includes two electrically controlled air pumps, which are respectively connected to the two air chambers and are used to drive the first suction cup to perform suction and release actions.

[0023] The system employs a pneumatic suction cup with independent air channels, air chambers, and an electrically controlled air pump, which provides a stable and reliable suction force for the first suction cup, ensuring effective gripping of flat cardboard box blanks. The timing of the suction and release actions is precisely controlled by the electrically controlled air pump, improving the accuracy and speed of material handling and placement. Furthermore, the pneumatic system has a relatively simple and clean structure.

[0024] Furthermore, the rotating body includes a turntable and a rotating shaft, and the material handling arm is mounted on the rotating shaft;

[0025] The synchronization drive unit includes a synchronization component and a drive component;

[0026] The synchronization component includes a first synchronization pulley located at the end of the material handling arm and a second synchronization pulley located on the rotating shaft. The first synchronization pulley and the second synchronization pulley are connected by belt drive.

[0027] The drive assembly is connected to the rotating shaft and is used to drive the rotating shaft to rotate.

[0028] By setting up the synchronization components (pulleys and belts), the synchronous rotation relationship between the end of the picking arm and the rotating shaft is precisely established, ensuring the precise control of the picking arm's posture (rotation around the axis) when it moves under the drive of the rotating body, thus ensuring the stability and reliability of the predetermined box opening trajectory.

[0029] Furthermore, the drive assembly includes a power interface for connecting to an external drive source and a transmission component for connecting the power interface to the rotating shaft;

[0030] The transmission component includes a first transmission shaft and a second transmission shaft. The first transmission shaft is fixedly connected to the power interface. A first transmission pulley is provided on the first transmission shaft. A second transmission pulley and a third transmission pulley are provided on the second transmission shaft. The second transmission pulley is connected to the first transmission pulley via a belt drive. The third transmission pulley is connected to the second synchronous pulley via a belt drive.

[0031] By combining multi-stage pulleys (first, second, and third transmission pulleys) and belts, power is efficiently and smoothly transmitted from the power interface to the rotating shaft (via the second synchronous pulley). The structure is relatively compact, and the transmission ratio can be designed as needed. It can achieve deceleration and torque increase or high-speed transmission. In addition, the belt drive has a certain buffering and vibration absorption effect, which helps to improve the smoothness of the entire mechanism's operation.

[0032] Furthermore, the material handling and box opening mechanism also includes a rotary encoder, and the rotating shaft is also provided with an output gear. The input end of the rotary encoder is provided with an input gear, and the input gear meshes with the output gear. The rotary encoder is used to control the electronically controlled air pump.

[0033] By adding a rotary encoder and linking it with the rotating shaft, the rotation angle position of the material handling and opening mechanism (rotating shaft) can be detected in real time with precision. This position information is then used to trigger and control the suction and release actions of the air pump (first suction cup), achieving precise timing control based on the actual position. This greatly improves the accuracy, reliability, and adaptability to high-speed operation.

[0034] Furthermore, the support structure includes a main support rod and a movable bracket. The movable bracket is slidably connected to the main support rod and fixed by fasteners. The movable bracket can slide along the main support rod and be fixed. The second suction cup is mounted on the movable bracket.

[0035] The sliding connection between the movable bracket and the main support rod, along with the fasteners, allows for easy adjustment and fixation of the position of the second suction cup on the auxiliary box-opening mechanism. This enhances the device's adaptability and flexibility to different sized boxes or different box-opening process requirements.

[0036] Furthermore, the inclined hopper is also provided with a paper box pretreatment structure, which includes a heating element. The bottom support and the top guide are both provided with the heating element. The heating element is located on the contact surface between the bottom support and the top guide and the flat paper box blank, and is used to heat the crease of the flat paper box blank.

[0037] By installing heating elements on the bottom support and top guide of the inclined hopper, the creases of the flat cardboard blanks in the stacked state are preheated directly, which can effectively soften the cardboard fibers and reduce the stiffness of the creases. This reduces the force required for subsequent material handling and opening, making the opening process smoother and faster, and significantly improving the success rate of opening. It is especially suitable for handling cardboard materials stored in hard or low-temperature environments.

[0038] The beneficial effects of this utility model are as follows:

[0039] This utility model provides a tea packaging box unfolding action unit. This unit utilizes the specific motion trajectory generated by the synchronous rotation of the rotating body and the picking arm in the material-picking and opening mechanism, combined with the suction cooperation of the auxiliary opening mechanism on the other side, to achieve double-sided, coordinated control and action on the flat cardboard box blank. Compared to the simple stretching of existing technologies, this coordinated action can more effectively guide and force the cardboard box to unfold along preset creases. Especially for cardboard boxes with complex structures or rigid materials, it can significantly improve the success rate, speed, and forming quality of unfolding, reduce deformation and damage, thereby improving the stability and efficiency of the entire packaging process. Simultaneously, the blocking component of the feeding mechanism ensures the reliability of material supply and prevents subsequent material from being spilled in. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the tea packaging box unfolding action unit provided in this application;

[0041] Figure 2 This is a side view of the feeding mechanism provided in this application;

[0042] Figure 3 This is a schematic diagram of the inclined hopper of the feeding mechanism provided in this application;

[0043] Figure 4 This is a perspective view of the tilting hopper, blocking assembly, and height adjustment mechanism provided in this application;

[0044] Figure 5 This is another perspective view of the tilting hopper, blocking assembly, and height adjustment mechanism provided in this application;

[0045] Figure 6 This is a perspective view of the material handling and box opening mechanism provided in this application;

[0046] Figure 7 This is a cross-sectional view of a portion of the material handling and opening mechanism provided in this application located at the air passage;

[0047] Figure 8 This is a schematic diagram of the part of the material picking and opening mechanism provided in this application located on the drive unit side;

[0048] Figure 9 This is a schematic diagram of the material handling and opening mechanism and the auxiliary opening mechanism provided in this application;

[0049] Figure 10 This is a schematic diagram of the auxiliary box-opening mechanism provided in this application.

[0050] Figure label:

[0051] 100. Feeding mechanism; 110. Conveyor belt; 120. Inclined hopper; 121. Bottom support component; 122. Second stop finger; 123. Side guide plate; 124. Top guide component; 130. Blocking assembly; 131. First stop finger; 132. Elastic element; 140. Height adjustment mechanism; 141. Main frame; 142. Slide rail; 143. Lead screw; 144. Slider;

[0052] 200. Material picking and opening mechanism; 210. Rotating body; 211. Turntable; 212. Rotating shaft; 213. Output gear; 220. Material picking arm; 221. Air passage; 221. First suction cup; 230. Drive unit; 240. Bearing seat; 241. Air chamber;

[0053] 300. Auxiliary box opening mechanism; 310. Support structure; 311. Main support rod; 312. Movable bracket; 320. Second suction cup;

[0054] 400. Rotary encoder; 410. Input gear. Detailed Implementation

[0055] 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.

[0056] Example 1

[0057] like Figures 1 to 10 As shown, this embodiment provides a tea packaging box unfolding action unit, designed to efficiently and reliably unfold and form flat paper box blanks. This unit mainly includes a feeding mechanism 100, a material handling and opening mechanism 200, and an auxiliary opening mechanism 300.

[0058] like Figure 1 , Figure 2 and Figure 3 As shown, the feeding mechanism 100 is used to continuously and orderly supply flat cardboard box blanks. It includes a conveyor belt 110 for conveying stacked flat cardboard box blanks to a subsequent inclined hopper 120. The inclined hopper 120 is located at the exit of the conveyor belt 110 and is used to hold a certain number of stacked cardboard box blanks, which are then slid towards the hopper exit by gravity.

[0059] like Figures 2 to 5 As shown, the specific structure of the inclined hopper 120 includes:

[0060] A tilted bottom support 121 is used to support the carton blank and guide it to slide toward the outlet. Near the outlet end, the bottom support 121 is provided with a second stop finger 122, which is used to provide initial positioning or restraint for the bottommost carton blank.

[0061] A pair of side guide plates 123 are disposed opposite each other on both sides of the bottom support 121, defining the width of the inclined hopper for the carton blank. To accommodate cartons of different widths, at least one side guide plate 123 can be locked and moved along the width direction by an adjustment mechanism (not shown), such as a manual screw or slider.

[0062] A top guide 124 is positioned relative to the bottom support 121. The height of the top guide 124 is adjustable to accommodate stacks of cartons of different thicknesses.

[0063] To more precisely control the adaptability and stability of the silo, such as Figure 3 and Figure 4 As shown:

[0064] The bottom support member 121 may consist of a first support beam arranged along the width direction and a first mounting block mounted thereon. The first mounting block is slidably connected to the first support beam and fixed by fasteners, with one end connecting to the conveyor belt 110 to form a smooth transition, and the other end mounting the second stop finger 122. This structure allows for convenient adjustment of the position of the second stop finger 122 to accommodate different cardboard boxes or conveyor belt interfaces.

[0065] The top guide 124 includes a second support beam, which is fixedly connected to the frame or an extension of the first support beam as shown in the figure via a height adjustment mechanism 140. The blocking assembly 130 is slidably connected to the second support beam and fixed by fasteners, and its position can be finely adjusted along the conveying direction.

[0066] like Figure 4 and Figure 5 As shown, the height adjustment mechanism 140 provides a way to precisely adjust the height of the top guide 124. It includes a main frame 141, on which a slide rail 142 and a lead screw 143 are mounted along the height direction. A slider 144 is slidably engaged with the slide rail 142 and threadedly connected to the lead screw 143. One end of the lead screw 143 has a handwheel (not separately labeled in the drawing, but its structure is clearly visible); rotating the handwheel drives the slider 144 to move up and down along the slide rail 142. The second support beam is fixedly connected to the slider 144, thereby achieving precise, stable, and convenient adjustment of the height of the top guide 124.

[0067] like Figures 3 to 5 As shown, the blocking assembly 130 located at the outlet of the inclined hopper 120 is key to achieving single-sheet separation. It is mounted on the height-adjustable top guide 124 and includes:

[0068] At least one first stop finger 131 that can swing about a pivot.

[0069] An elastic element 132, such as a torsion spring or tension spring, applies a downward biasing force to the first stop finger 131, placing it in a lower blocking position in its natural state. This blocking position can block the second and subsequent layers of carton blanks. The first stop finger 131 is positioned opposite to the second stop finger 122 on the bottom support member, and together they act on the discharge port.

[0070] When the material handling and opening mechanism 200 picks up and pulls out the bottommost cardboard blank, the cardboard blank will push upward against the first stop finger 131, overcoming the biasing force of the elastic element 132 and swinging upward to make way. Once the bottommost cardboard blank has passed, the first stop finger 131 will quickly rebound to the blocking position under the action of the elastic element 132, reliably blocking the next cardboard box.

[0071] like Figure 1 , Figures 6 to 9 As shown, the material picking and unpacking mechanism 200 is responsible for picking up the bottommost flat cardboard box blank from the outlet of the inclined hopper 120 and unfolding it through a specific action. This mechanism includes:

[0072] The rotating body 210 includes a turntable 211 and a central rotating shaft 212.

[0073] A picking arm 220 is rotatably connected to the rotating body 210, specifically the rotating shaft 212, via a bearing seat 240. The axis of the picking arm 220 is parallel or the same as the axis of the rotating shaft 212, depending on the design, and is spaced at a certain distance. The picking arm 220 is provided with two sets of first suction cups 221 arranged symmetrically along its radial direction. These first suction cups 221 are preferably pneumatic suction cups, used to adsorb the first surface of the bottommost cardboard blank.

[0074] A synchronous drive unit 230 is used to precisely control the synchronous rotation of the rotating body 210 and the picking arm 220.

[0075] like Figure 7 As shown, to provide an air source for the first suction cup 221, the material handling arm 220 has two air channels 221 inside, as shown in the figure. These are labeled the same as the suction cups and can be understood as air passages connecting the suction cups. The bearing seat 240 has two corresponding annular air chambers 241 inside. The two air channels 221 are connected to the two air chambers 241 via rotary sealing structures. The material handling and opening mechanism 200 also includes two electrically controlled air pumps (not shown), which are connected to the two air chambers 241 respectively. Through commands from an external control system, the airflow is precisely controlled, thereby driving the two symmetrical sets of first suction cups 221 to perform suction and vacuum-breaking actions respectively.

[0076] like Figure 6 and Figure 8 As shown, the structure of the synchronous drive unit 230 ensures precise synchronous movement of the picking arm 220 relative to the rotating body 210. It includes a synchronization component and a drive component:

[0077] Synchronization components: A first synchronous pulley is located at the end of the picking arm 220 near the suction cup, and a second synchronous pulley is also fixed on the rotating shaft 212. These two pulleys are connected by belt drive. This connection method ensures that when the rotating shaft 212 rotates, the picking arm 220 will rotate synchronously around its own axis according to a specific design ratio.

[0078] Drive assembly: Responsible for driving the entire mechanism's movement. It includes a power interface for connecting an external motor and a transmission component connecting the power interface to the rotating shaft 212. (Example) Figure 8In one specific implementation, the transmission components may include a first transmission shaft connected to a power interface, carrying a first transmission pulley, and a second transmission shaft carrying a second and a third transmission pulley. The second transmission pulley is connected to the first transmission pulley via a belt, while the third transmission pulley is connected to a second synchronous pulley on the rotating shaft 212 via a belt or to another drive pulley on the rotating shaft. This multi-stage transmission can achieve speed change and power transmission.

[0079] like Figure 8 As shown, to precisely control the timing of the material handling and opening mechanism 200, such as picking up and releasing at a specific angle, the mechanism may also include a rotary encoder 400. An output gear 213 is fixedly mounted on the rotating shaft 212, and an input gear 410 is provided at the input end of the rotary encoder 400; the two mesh with each other. In this way, the rotary encoder 400 can detect the precise angular position of the rotating shaft 212 in real time and feed the signal back to the control system to trigger the electronically controlled air pump to operate at the correct time.

[0080] like Figure 1 , Figure 9 and Figure 10 As shown, the auxiliary box-opening mechanism 300 is used to cooperate with the material-retrieving box-opening mechanism 200 during the box-opening process, and includes:

[0081] The support structure 310 includes a fixed main support rod 311.

[0082] At least one movable bracket 312 is slidably connected to the main support rod 311 and can be fixed at any position on the main support rod 311 by fasteners such as screws.

[0083] At least one second suction cup 320, preferably a pneumatic suction cup, is mounted on a movable bracket 312.

[0084] During operation, when the first suction cup 221 of the picking and opening mechanism 200 picks up the first surface of the cardboard box and moves it to the predetermined position of the auxiliary opening mechanism 300, the second suction cup 320 of the auxiliary opening mechanism 300 is driven to pick up the second surface of the cardboard box, which is the opposite side. Then, the picking and opening mechanism 200 continues to execute its specific rotation and swing trajectory controlled by the synchronous drive unit 230, pulling the first surface, while the auxiliary opening mechanism 300 is fixed or cooperates with a smaller movement, applying a reaction force or providing stable support to the second surface, thereby forcing the cardboard box to unfold and form along the preset crease. The position of the second suction cup 320 can be adjusted by adjusting the movable bracket 312 to accommodate cardboard boxes of different sizes.

[0085] In this embodiment, heating elements, such as resistance heating films or heating wires, can also be provided on the bottom support member 121 and top guide member 124 of the inclined hopper 120, especially on the surfaces in contact with the cardboard blank, to form a cardboard pretreatment structure. These heating elements can preheat the critical crease areas of the cardboard blank while it remains in the hopper. This softens the cardboard fibers, reduces the stiffness of the creases, and makes it easier and smoother for the subsequent unpacking mechanism 200 and auxiliary unpacking mechanism 300 to unfold the box, reducing the required force and increasing the success rate. This is particularly beneficial for processing harder cardboard boxes or those with longer storage times.

[0086] The workflow of the tea packaging box unfolding action unit in this embodiment is as follows:

[0087] Flat cardboard box blanks are fed into the inclined hopper 120 by conveyor belt 110 and stacked. A blocking assembly 130 ensures that only the bottommost cardboard box blank can be removed. The synchronous drive unit 230 of the picking and opening mechanism 200 is activated, driving the rotating body 210 and the picking arm 220 to rotate synchronously. The first suction cup 221 rotates to the hopper outlet and picks up the first surface of the bottommost cardboard box. The first stop finger 131 yields and then springs back. The picking arm 220 moves the cardboard box to the auxiliary opening mechanism 300. The second suction cup 320 picks up the second surface of the cardboard box. The picking and opening mechanism 200 continues to execute a preset complex opening trajectory generated by synchronous rotation, unfolding the cardboard box in cooperation with the auxiliary opening mechanism 300. After unfolding, the first suction cup releases the cardboard box downwards to the predetermined workstation, and the unit prepares for the next cycle.

[0088] The tea packaging box unfolding unit provided in this embodiment achieves efficient, stable, and reliable automatic unfolding of flat cardboard box blanks through reliable feeding of the feeding mechanism, synchronous rotational complex motion of the unloading and opening mechanism, and coordinated cooperation of the auxiliary opening mechanism. It is particularly suitable for handling cardboard boxes with certain difficulties, such as those made of harder materials or with complex structures, significantly improving the efficiency and quality of automated packaging. Various adjustment mechanisms and optional pre-treatment structures further enhance the adaptability and performance of the equipment.

[0089] 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.

[0090] 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.

[0091] 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 tea packaging box unfolding action unit, characterized in that, include: A feeding mechanism for accommodating and downward conveying stacked flat cardboard box blanks, the feeding mechanism including a conveyor belt, an inclined hopper at the outlet of the conveyor belt, and a blocking assembly at the outlet of the inclined hopper, the blocking assembly including a first stop finger that can swing about a pivot and an elastic element that applies a downward biasing force to the first stop finger, the first stop finger being in a blocking position under the action of the elastic element, for blocking the flat cardboard box blanks, and being lifted up by the flat cardboard box blank over the biasing force when the bottommost flat cardboard box blank is being picked up; The material picking and opening mechanism is used to pick up the bottommost flat cardboard box blank from the outlet of the inclined hopper. The material picking and opening mechanism includes a rotating body, a picking arm rotatably mounted on the rotating body, and a synchronous drive unit. The axial direction of the picking arm is the same as the axial direction of the rotating body and is spaced apart. The picking arm is provided with two sets of first suction cups arranged radially symmetrically. The first suction cups are used to adsorb the first surface of the bottommost flat cardboard box blank. The synchronous drive unit is connected to the rotating body and the picking arm to drive the rotating body and the picking arm to rotate around their respective axes synchronously, so that the first suction cups move along a predetermined trajectory to pick up and transfer the flat cardboard box blank. The auxiliary box opening mechanism includes a support structure and at least one second suction cup disposed on the support structure. The second suction cup is used to adsorb the second surface of the flat paper box blank. When the flat paper box blank is moved to a predetermined position by the first suction cup, the second suction cup adsorbs the second surface of the flat paper box blank to cooperate with the material picking and opening mechanism to complete the unfolding action.

2. The tea packaging box unfolding action unit according to claim 1, characterized in that: The tilting hopper includes: An inclined bottom support is used to support the flat cardboard box blank and guide it to slide downward to the inclined hopper outlet. The bottom support is provided with a second stop finger. A pair of lateral guide plates are arranged opposite each other, the pair of lateral guide plates are located on both sides of the bottom support member, and are used to limit the width of the inclined hopper. At least one of the lateral guide plates can be translated along the width direction of the inclined hopper. The blocking assembly is mounted on the top guide relative to the bottom support member, and the top guide can be translated along the height direction of the inclined hopper.

3. The tea packaging box unfolding action unit according to claim 2, characterized in that: The bottom support component includes a first support beam arranged along the width direction of the inclined hopper and a first mounting block installed on the first support beam. The first mounting block is slidably connected to the first support beam and fixed by fasteners. One end of the first mounting block is connected to the conveyor belt, and the other end is equipped with the second stop finger. The top guide includes a second support beam and a height adjustment mechanism. The second support beam is fixedly connected to the first support beam through the height adjustment mechanism. The blocking assembly is slidably connected to the second support beam and fixed by fasteners. The blocking assembly is arranged along the conveying direction of the inclined hopper, and the first stop finger and the second stop finger are arranged opposite to each other.

4. The tea packaging box unfolding action unit according to claim 3, characterized in that: The height adjustment mechanism includes a main frame, on which a slide rail, a lead screw, and a slider are arranged along the height direction of the inclined hopper. The slider is slidably connected to the slide rail and threadedly connected to the lead screw. One end of the lead screw is provided with a handwheel, and the second support beam is fixedly connected to the slider.

5. The tea packaging box unfolding action unit according to claim 1, characterized in that: The first suction cup is a pneumatic suction cup. The picking arm is connected to the rotating body through a bearing seat. The picking arm is provided with two air channels. The bearing seat is provided with two air chambers. The two air channels are respectively connected to the two air chambers. The material handling and opening mechanism also includes two electrically controlled air pumps, which are respectively connected to the two air chambers and are used to drive the first suction cup to perform suction and release actions.

6. The tea packaging box unfolding action unit according to claim 5, characterized in that: The rotating body includes a turntable and a rotating shaft, and the material handling arm is mounted on the rotating shaft; The synchronization drive unit includes a synchronization component and a drive component; The synchronization component includes a first synchronization pulley located at the end of the material handling arm and a second synchronization pulley located on the rotating shaft. The first synchronization pulley and the second synchronization pulley are connected by belt drive. The drive assembly is connected to the rotating shaft and is used to drive the rotating shaft to rotate.

7. The tea packaging box unfolding action unit according to claim 6, characterized in that: The drive assembly includes a power interface for connecting to an external drive source and a transmission component for connecting the power interface to the rotating shaft. The transmission component includes a first transmission shaft and a second transmission shaft. The first transmission shaft is fixedly connected to the power interface. A first transmission pulley is provided on the first transmission shaft. A second transmission pulley and a third transmission pulley are provided on the second transmission shaft. The second transmission pulley is connected to the first transmission pulley via a belt drive. The third transmission pulley is connected to the second synchronous pulley via a belt drive.

8. The tea packaging box unfolding action unit according to claim 7, characterized in that: The material handling and box opening mechanism also includes a rotary encoder, and the rotating shaft is also provided with an output gear. The input end of the rotary encoder is provided with an input gear, and the input gear meshes with the output gear. The rotary encoder is used to control the electronically controlled air pump.

9. The tea packaging box unfolding action unit according to claim 1, characterized in that: The support structure includes a main support rod and a movable bracket. The movable bracket is slidably connected to the main support rod and fixed by fasteners. The movable bracket can slide along the main support rod and be fixed. The second suction cup is mounted on the movable bracket.

10. The tea packaging box unfolding action unit according to claim 2, characterized in that: The inclined hopper is also equipped with a paper box pretreatment structure, which includes a heating element. The bottom support and the top guide are both equipped with the heating element. The heating element is located on the contact surface between the bottom support and the top guide and the flat paper box blank, and is used to heat the crease of the flat paper box blank.

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