Automatic tea packaging device

Abstract

The invention relates to the field of packaging, in particular to an automatic tea packaging device. The device comprises a machine shell, a left negative pressure suction head, a right negative pressure suction head, a material guiding structure and a material arranging and pressing structure. The right negative pressure suction head is driven by the mechanical arm to rotate to the position below the bag storage bin to take out a packaging bag, the left negative pressure suction head and the right negative pressure suction head jointly act to position the packaging bag and open an opening in the upper end of the packaging bag, the material guiding structure and the material arranging and pressing structure synchronously move downwards, and the lower end of the material guiding structure is inserted into the packaging bag and feeds quantitative tea into the packaging bag; the material arranging and pressing structure moves downwards, the tea leaves are jacked and pressed through the jacking and pressing piece, so that the bottom of the packaging bag can be completely opened, the tea leaves are tightly extruded to the bottom of the packaging bag, when the jacking and pressing force between the jacking and pressing piece and the tea leaves is larger than a preset value, the jacking and pressing piece and the installation adjusting part slide relatively, and the extrusion force is conveniently controlled according to the compaction degree of the tea leaves; the compaction degree of each bag of tea is basically the same, the shape of the pressed tea is more regular, and the package is more attractive.

Description

Technical Field

[0001] The present invention relates to the field of packaging, and particularly to an automatic tea packaging device. Background Art

[0002] In today's increasingly busy life, more and more people drink tea in their spare time to relax their bodies. During the production process of tea, it is generally packaged in a weighed and refined manner, that is, a certain amount of tea is put into a delicate small packaging bag through fixed weighing for extrusion and sealing. When the existing automatic tea packaging device is packaging, it usually uses a top pressing device to extrude the tea, so that the tea is in a regular shape at the bottom of the packaging bag. However, because the states of the tea during bagging are different and the degrees of looseness are different, it is difficult to control the top pressing force when pressing the tea, resulting in the tea not being able to be regularly pressed into a regular block, affecting the packaging aesthetics; at the same time, when compressing the tea inside the packaging bag, the packaging bag is also under pressure, resulting in the packaging bag being easily detached, and the adaptability between the top pressing device and the packaging bag is not high, and sometimes it cannot press the entire tea surface, affecting the regularity of the tea after being pressed.

[0003] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] According to the deficiencies of the prior art, the present invention provides an automatic tea packaging device to solve the problems that the tea packaged by the existing automatic tea packaging device has different degrees of tightness and the packaging is irregular and not beautiful.

[0005] The automatic tea packaging device of the present invention adopts the following technical solutions: including: A machine shell, a bagging station is arranged inside the machine shell, and a bag storage bin for storing packaging bags is arranged above one side of the bagging station; A left negative pressure suction head and a right negative pressure suction head, which are respectively located on the left and right sides of the bagging station. The left negative pressure suction head is fixedly installed on the machine shell, and the right negative pressure suction head is installed on the machine shell through a robotic arm; A feeding structure, which is arranged in the machine shell and above the bagging station, and the feeding structure can move up and down relative to the machine shell; a feeding port is arranged on the side of the feeding structure; Integral material pressing structure, the integral material pressing structure includes an installation and adjustment part and a pressing part. The installation and adjustment part includes an installation plate and a pressing gear; both the installation plate and the pressing gear are inserted into the material guiding structure in a slidable manner up and down; a left rack plate and a right rack plate are respectively installed on the left and right sides of the installation plate. The right rack plate is vertically and fixedly connected to the installation plate, and the left rack plate is perpendicular to the installation plate and is slidable up and down; the pressing gear is clamped between the left rack plate and the right rack plate and can mesh with the left rack plate and the right rack plate. A square limiting block is arranged on one side of the pressing gear, and a limiting groove is arranged on the installation plate. The limiting block is arranged in the limiting groove in a slidable manner and can be disengaged from the limiting groove; a positioning suction head is arranged on the side of the right rack plate facing away from its teeth; the pressing part is in wedge surface cooperation and magnetic connection with the lower end of the left rack plate; Wedge-shaped blocks are arranged on the front and rear inner side walls of the material guiding structure. The two wedge-shaped blocks are symmetric and inclined from top to bottom towards the front and rear sides. The pressing part includes two telescopic frames that are slidably inserted in the front-rear direction. An elastic part is connected between the two telescopic frames. The elastic part makes the two telescopic frames tend to move away from each other. The telescopic frame has an upper mating plate and a support block connected to the bottom of the upper mating plate. The upper mating plate is in sliding cooperation with the wedge-shaped block. In the front-rear direction, the thickness of the support block is greater than the thickness of the upper mating plate and the sides of both of them facing away from the wedge-shaped block are coplanar. The bottoms of the two support blocks are connected with a corrugated pressing plate that can be telescopic.

[0006] Optionally, a first telescopic mechanism is arranged on the machine shell, and the first telescopic mechanism is used to control the up and down movement of the material guiding structure.

[0007] Optionally, a second telescopic mechanism is arranged on the machine shell, and the second telescopic mechanism is used to control the up and down movement of the installation plate and the pressing gear.

[0008] Optionally, the automatic tea packaging device further includes a metering mechanism and a conveying mechanism; the metering mechanism is used to weigh the tea and successively release the quantified tea to the conveying mechanism, and the conveying mechanism is used to convey the quantified tea to the material guiding structure.

[0009] Optionally, the automatic tea packaging device further includes a sealing mechanism. The sealing mechanism is arranged below the bagging station, and the sealing mechanism is used to seal the tea-filled packaging bag.

[0010] Optionally, the automatic tea packaging device further includes a discharging mechanism. The discharging mechanism is configured to receive the sealed packaging bag and transfer it to the discharging port for discharging.

[0011] Optionally, a storage hopper is arranged at the top of the machine shell, and the tea to be packaged is stored in the storage hopper.

[0012] The beneficial effects of the present invention are as follows: An automatic tea packaging device of the present invention is provided with a material aligning and pressing-down structure including an installation and adjustment part and a pressing member. The installation and adjustment part can be slid up and down on the machine shell, and is inserted into the material guiding structure and can slide up and down relative to the material guiding structure. The pressing member is arranged on the installation and adjustment part. After the material guiding mechanism inserts the packaging bag and imports the quantified tea into the packaging bag, the material aligning and pressing-down structure moves downward, and presses the tea through the pressing member, so as to completely open the bottom of the packaging bag and tightly press the tea at the bottom of the packaging bag. When the pressing force between the pressing member and the tea is greater than a preset value, the pressing member and the installation and adjustment part slide relative to each other, facilitating the control of the pressing force according to the compactness of the tea, which can not only ensure that the tea is not damaged, but also make the compactness of each pack of tea basically the same, and the shape of the tea after being pressed is more regular, making the packaging more beautiful.

[0013] Further, the left rack plate and the right rack plate in the installation and adjustment part can slide relative to each other. Thus, a positioning suction head is arranged on the right rack plate to increase the clamping force on the packaging bag and prevent the packaging bag from falling off. The left rack plate is used to drive the pressing member to press down the tea. Further, through the meshing of the downward pressing gear with the left rack plate and the right rack plate, the force stability of the device is improved, so that the pressing member will not generate an eccentric moment and the tea is pressed more regularly.

[0014] Further, by setting the pressing member as a telescopic structure, the pressing member can adapt to the length of the packaging bag, avoiding the situation where the entire tea surface cannot be pressed, and making the shape of the tea after being pressed more regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall mechanism of an automatic tea packaging device of the present invention; Figure 2 is Figure 1 front view of; Figure 3 is Figure 2 enlarged view of part A in; Figure 4 is Figure 3 cross-sectional view; Figure 5 It is a schematic diagram of the material guiding structure and the material aligning and pressing-down structure in the present invention; Figure 6 is Figure 5 top view of; Figure 7 For Figure 6 the sectional view taken along line B-B in Figure 8 the structural schematic diagram of the mounting plate, left rack plate and right rack plate in the present invention; Figure 9 the structural schematic diagram of the lower pressing gear in the present invention; Figure 10 For Figure 5 the side view (including the packaging bag) of Figure 11 For Figure 10 the sectional view taken along line C-C in

[0017] In the figure: 100, machine housing; 101, left negative pressure suction head; 102, right negative pressure suction head; 103, bag storage bin; 200, packaging bag; 300, material guiding structure; 301, material guiding hopper; 3011, feeding port; 302, support plate; 303, wedge block; 400, material aligning and pressing down structure; 401, lower pressing gear; 402, limit block; 403, mounting plate; 4031, limit groove; 404, right rack plate; 405, alignment suction head; 406, left rack plate; 407, telescopic frame; 4071, mating plate; 4072, support block; 408, corrugated pressing plate; 500, metering mechanism; 600, conveying mechanism; 700, sealing mechanism; 800, discharging mechanism. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 11 shown, an automatic tea packaging device provided by an embodiment of the present invention includes a machine housing 100, a left negative pressure suction head 101, a right negative pressure suction head 102, a material guiding structure 300, and a material aligning and pressing down structure 400; a bag loading station is arranged inside the machine housing 100, and a bag storage bin 103 is arranged above one side of the bag loading station, and the packaging bag 200 is stored in the bag storage bin 103.

[0020] The left negative pressure suction head 101 and the right negative pressure suction head 102 are respectively located on the left and right sides of the bagging station. Among them, the left negative pressure suction head 101 is fixedly installed on the machine shell 100, and the right negative pressure suction head 102 is installed on the machine shell 100 through a robotic arm. The right negative pressure suction head 102 is configured to be able to turn under the drive of the robotic arm to the lower part of the bag storage bin 103 to take out the packaging bag 200, and transfer the taken-out packaging bag 200 to the bagging station, and cooperate with the left negative pressure suction head 101 to position the packaging bag 200 at the bagging station and open the opening.

[0021] The material guiding structure 300 is arranged on the machine shell 100 and above the bagging station. The material guiding structure 300 can move up and down relative to the machine shell 100; specifically, the material guiding structure 300 includes a material guiding hopper 301 and support plates 302 arranged on the front and rear sides of the bottom surface of the material guiding hopper 301. The side surface of the material guiding hopper 301 is provided with a material inlet 3011, and the material inlet 3011 is configured to receive a fixed amount of tea leaves and introduce them into the packaging bag 200 after the material guiding structure 300 moves down until its support plates 302 extend into the packaging bag 200.

[0022] The material leveling and pressing-down structure 400 includes an installation and adjustment part and a pressing member. The installation and adjustment part can be slidably arranged up and down on the machine shell 100, and is inserted into the material guiding structure 300 and can slide up and down relative to the material guiding structure 300. The pressing member is arranged on the installation and adjustment part. The pressing member is configured to be able to move downward under the drive of the installation and adjustment part to press the tea leaves, and the pressing member is also configured to slide relative to the installation and adjustment part when the pressing force between it and the tea leaves is greater than a preset value.

[0023] During use, the right negative pressure suction head 102 rotates under the drive of the robotic arm to the lower part of the bag storage bin 103 to take out the packaging bag 200, and rotates to be parallel and aligned with the left negative pressure suction head 101. The left negative pressure suction head 101 and the right negative pressure suction head 102 act together to position the packaging bag 200 and open its upper end opening. The material guiding structure 300 and the material leveling and pressing-down structure 400 move downward synchronously until the lower end of the material guiding structure 300 is inserted into the packaging bag 200. At this time, the material inlet 3011 on the material guiding structure 300 is aligned with the output port of the previous process, and a fixed amount of tea leaves enter the packaging bag 200 through the material inlet 3011. It should be noted that the initial position of the material leveling and pressing-down structure 400 in the material guiding structure 300 does not block or completely block the material inlet 3011, and does not affect the feeding. Then, the material leveling and pressing-down structure 400 moves downward, and presses the tea leaves through the pressing member, so as to be able to fully open the bottom of the packaging bag 200 and tightly squeeze the tea leaves at the bottom of the packaging bag 200. When the pressing force between the pressing member and the tea leaves is greater than a preset value, the pressing member slides relative to the installation and adjustment part, which is convenient for controlling the pressing force according to the compactness of the tea leaves, can not only ensure that the tea leaves are not crushed, but also make the compactness of each bag of tea leaves basically the same, the shape of the tea leaves after being pressed is more regular, and the packaging is more beautiful.

[0024] It can be understood that the automatic tea packaging device of the present invention further includes a metering mechanism 500 , a conveying mechanism 600 , a sealing mechanism 700 and a discharging mechanism 800 .

[0025] The metering mechanism 500 is used to weigh the tea leaves and gradually lower the fixed amount of tea leaves to the conveying mechanism 600. The conveying mechanism 600 is used to convey the fixed amount of tea leaves to the material guiding structure 300. A sealing station is provided below the bagging station. The sealing mechanism 700 is provided at the sealing station. After the packaging bag 200 filled with tea leaves falls to the sealing station, it is sealed under the extrusion of the sealing mechanism 700. When sealing, the sealing mechanism 700 squeezes and exhausts the tea bag at a preset position above the tea leaves (the position is close to the tea leaves) and seals the opening. After the sealing is completed, the air above the tea leaves in the packaging bag 200 is discharged, and the tea leaves at the bottom are compact and present a regular shape that matches the tea bag. A discharge port is provided at the bottom of the housing 100. The discharge mechanism 800 is configured to receive the sealed packaging bag 200 and transfer it to the discharge port for discharge.

[0026] Furthermore, the housing 100 is provided with a first telescopic mechanism and a second telescopic mechanism, the first telescopic mechanism is used to control the up and down movement of the material guiding structure 300, and the second telescopic mechanism is used to control the up and down movement of the installation adjustment part.

[0027] In a further embodiment, the installation and adjustment portion includes a mounting plate 403 and a downward pressure gear 401, both of which can be installed on the housing 100 so as to move up and down, and a left rack plate 406 and a right rack plate 404 are installed on the left and right sides of the mounting plate 403 respectively, the right rack plate 404 is vertically fixedly connected to the mounting plate 403, and the left rack plate 406 is vertically and slidably connected to the mounting plate 403; teeth are provided on the facing surfaces of the left rack plate 406 and the right rack plate 404, and the downward pressure gear 401 is clamped between the left rack plate 406 and the right rack plate 404. The left rack plate 406 and the right rack plate 404 can be meshed with each other; an alignment suction head 405 is provided on the side of the right rack plate 404 away from its teeth, and the position where the alignment suction head 405 and the right negative pressure suction head 102 are aligned is the lower limit position of the mounting plate 403. Through the setting of the alignment suction head 405, after the alignment suction head 405 and the right negative pressure suction head 102 are aligned, the alignment suction head 405 and the right negative pressure suction head 102 simultaneously adsorb the packaging bag 200, effectively reducing the deformation of the packaging bag 200 caused by unidirectional suction, and at the same time can provide a greater clamping force to prevent the packaging bag 200 from falling off when the tea leaves are pressed.

[0028] A limiting structure is provided between the downward pressing gear 401 and the mounting plate 403, and the limiting structure is configured to be able to prevent the downward pressing gear 401 from rotating; in the initial state, both the mounting plate 403 and the downward pressing gear 401 are in the upper limit position, the downward pressing gear 401 meshes with the left rack plate 406, the limiting structure prevents the downward pressing gear 401 from rotating, and the mounting plate 403, the left rack plate 406, the right rack plate 404, and the downward pressing gear 401 can move downward synchronously; after the mounting plate 403 moves to the lower limit position, as the downward pressing gear 401 moves downward, the downward pressing gear 401 gradually disengages from the mounting plate 403. After the downward pressing gear 401 disengages from the mounting plate 403, the limiting structure fails, and at the same time, the downward pressing gear 401 meshes with both the left rack plate 406 and the right rack plate 404; the pressing member is in wedge-shaped surface fit with the lower end of the left rack plate 406 and is magnetically connected. Specifically, refer to Figure 4 and Figure 5 , a wedge-shaped groove is provided on the pressing member, the lower end of the left rack plate 406 is provided with a wedge-shaped tip adapted to the wedge-shaped groove on the pressing member, the wedge-shaped tip is inserted into the wedge-shaped groove and the mating wedge surfaces of the two are magnetically connected. In the initial state, the wedge-shaped tip is not at the bottom of the wedge-shaped groove, so that after the pressing force between the pressing member and the tea reaches a preset value (that is, after the tea is compacted), the left rack plate 406 can overcome the magnetic attraction force between it and the pressing member and thus move downward relative to the pressing member.

[0029] Further, the limiting structure includes a limiting block 402 and a limiting groove 4031. The limiting block 402 is provided on one side of the downward pressing gear 401, specifically at the axis of the downward pressing gear 401. The limiting block 402 is square. The limiting groove 4031 is provided on the mounting plate 403. The limiting block 402 is slidably arranged in the limiting groove 4031 and can be disengaged from the limiting groove 4031. When the limiting block 402 is located in the limiting groove 4031, it prevents the downward pressing gear 401 from rotating; in the initial state, the limiting block 402 is located in the limiting groove 4031, and the downward pressing gear 401 meshes with the left rack plate 406. After the limiting block 402 disengages from the lower end of the limiting groove 4031, the downward pressing gear 401 meshes with both the left rack plate 406 and the right rack plate 404. Specifically, refer to Figure 11, in the vertical direction, the number of teeth on the left rack plate 406 is more than that on the right rack plate 404. The initial limit block 402 is located in the limit groove 4031 to prevent the downward pressure gear 401 from rotating. At the same time, the downward pressure gear 401 meshes with the left rack plate 406. After the feeding structure 300 moves down in place and the tea leaves are fed into the packaging bag 200, the mounting plate 403, the right rack plate 404, the downward pressure gear 401, and the left rack plate 406 move down synchronously, thereby driving the pressing member to move down. After the mounting plate 403, the right rack plate 404, the downward pressure gear 401, and the left rack plate 406 move down synchronously until the alignment suction head 405 is aligned with the right negative pressure suction head 102, the mounting plate 403 and the right rack plate 404 move down in place. The downward pressure gear 401 continues to move down and drives the left rack plate 406 to move down. Then, the limit block 402 on the downward pressure gear 401 disengages from the limit groove 4031, and the downward pressure gear 401 meshes with both the left rack plate 406 and the right rack plate 404 at the same time. After that, as the downward pressure gear 401 moves down, the downward pressure gear 401 rolls relative to the right rack plate 404 and drives the left rack plate 406 to continue moving down, thereby enabling the pressing member to press the tea leaves tightly. After the pressing member presses the tea leaves tightly, the left rack plate 406 moves downward relative to the pressing member (a sensor is provided on the left rack plate 406 or the pressing member, and the sensor can be configured to be able to sense the relative position between the left rack plate 406 and the pressure reducing member). The sensor senses the position change and sends a signal to the control system, and the left negative pressure suction head 101, the right negative pressure suction head 102, and the alignment suction head 405 withdraw the attraction force on the packaging bag 200, and the packaging bag 200 drops to the edge sealing station; to ensure that the packaging bag 200 can drop smoothly, after the tea leaves are compacted, the downward pressure gear 401 and the mounting plate 403 can also be moved down synchronously by a certain distance to push the packaging bag 200 down, so as to avoid the friction between the packaging bag 200 and the support plate 302 of the feeding structure 300 from affecting the downward movement of the packaging bag 200.

[0030] In the solution of this embodiment, the left rack plate 406 and the right rack plate 404 in the installation adjustment part can slide relative to each other, so as to set the alignment suction head 405 on the right rack plate 404 to increase the clamping force on the packaging bag 200, drive the pressing member to press the tea leaves downward by the left rack plate 406, and further improve the force stability of the device through the meshing of the downward pressure gear 401 with the left rack plate 406 and the right rack plate 404, so that the pressing member will not generate an eccentric moment and press the tea leaves more regularly.

[0031] In the scheme of the present embodiment, the second telescopic mechanism can be configured to include two telescopic cylinders, and the output ends of the two telescopic cylinders are respectively connected to the mounting plate 403 and the downward pressure gear 401; or the second telescopic mechanism can be configured to include a telescopic cylinder, which has two output ends, and the mounting plate 403 and the downward pressure gear 401 are respectively connected to one of the output ends; it can be understood that the downward pressure gear 401 can rotate relative to the output end of the second telescopic mechanism. In the scheme where the second telescopic mechanism is a telescopic cylinder, the maximum stroke of the output end of the second telescopic mechanism connected to the mounting plate 403 is adapted to the lower end limit position of the mounting plate 403.

[0032] In a further embodiment, wedge blocks 303 are provided on both the front and rear inner side walls of the material guide structure 300, the two wedge blocks 303 are symmetrically arranged and the inclination direction is from top to bottom to the front and rear sides, the top pressure piece includes two telescopic frames 407 that are slidably inserted in the front and rear directions, and an elastic member (not shown in the figure) is connected between the two telescopic frames 407, and the elastic member makes the two telescopic frames 407 tend to move away from each other, and the bottoms of the two telescopic frames 407 are connected to corrugated pressing plates 408, which can shrink and extend, and the telescopic frames 407 can be inserted into the interior of the material guide structure 300 by sliding up and down, referring to Figure 7 As shown, the telescopic frame 407 has an upper matching plate 4071 and a support block 4072 connected to the bottom of the upper matching plate 4071. The upper matching plate 4071 cooperates with the wedge block 303. In the front-to-back direction, the thickness of the support block 4072 is greater than the thickness of the upper matching plate 4071, and the two sides away from the wedge block 303 are coplanar. That is to say, in the front-to-back direction, the entire top pressure piece is a structure with a narrow upper end and a wide lower end. The initial top pressure piece is in the upper extreme position, and the two telescopic frames 407 are retracted to the minimum state and the support block 4072 is coplanar. Block 4072 is located inside the material guiding structure 300. When the top pressure piece moves downward with the installation adjustment part, the distance between the wedge surfaces of the two wedge blocks 303 gradually increases, and the two telescopic frames 407 gradually move away from each other. When the support block 4072 at the bottom of the telescopic frame 407 is separated from the material guiding structure 300, the support block 4072 abuts against the inner wall of the packaging bag 200 and then adapts to the size of the packaging bag 200, thereby better expanding the bottom of the packaging bag 200 and squeezing the tea leaves more compactly and regularly.

[0033] In combination with the above embodiments, the use principle and working process of the present invention are as follows: A storage hopper is provided on the top of the casing 100, and the tea leaves to be packaged are stored in the storage hopper. When the equipment is started, the tea leaves in the hopper fall into the metering mechanism 500 for quantitative weighing. The weighed tea leaves are transported to the material guide structure 300 through the conveying mechanism 600 at a certain rhythm.

[0034] There are multiple packaging bags 200 stacked vertically in the storage bin 103. The robotic arm controls the right negative pressure suction head 102 to rotate below the storage bin 103 and sucks out one (the lowermost one) of the packaging bags 200 in the storage bin 103 by suction. Then, the robotic arm controls the right negative pressure suction head 102 to carry the packaging bag 200 and rotate to a position parallel and aligned with the left negative pressure suction head 101. The other side of the packaging bag 200 is adsorbed by the left negative pressure suction head 101. Then, the right negative pressure suction head 102 slightly moves away from the left negative pressure suction head 101, and the packaging bag 200 is positioned and its opening is opened under the action of the left negative pressure suction head 101 and the right negative pressure suction head 102.

[0035] The material guiding structure 300 and the material leveling and pressing-down structure 400 move downward synchronously. When the support plate 302 of the material guiding structure 300 is inserted into the interior of the packaging bag 200, at this time, the material guiding structure 300 reaches the in-place position (this position can be controlled by a program or by the maximum stroke of the first telescopic mechanism), and the feeding port 3011 corresponds to the output port of the conveying mechanism 600. The quantitatively taken-out tea enters the interior of the packaging bag 200 through the material guiding structure 300. During this process, there is no relative displacement between the material guiding structure 300 and the material leveling and pressing-down structure 400, the telescopic frame 407 is in the shortest state, and the corrugated pressing plate 408 is restricted inside the material guiding structure 300.

[0036] Next, control the mounting plate 403 and the pressing-down gear 401 of the material leveling and pressing-down structure 400 to continue pressing down synchronously. In the previous stage and this stage, due to the cooperation between the limiting block 402 on the pressing-down gear 401 and the limiting groove 4031 on the mounting plate 403, the pressing-down gear 401 cannot rotate, and the pressing-down gear 401 remains meshed with the left rack plate 406 but does not move relatively; at the same time, in this stage, since the position of the material guiding structure 300 remains unchanged, and the pressing member moves downward with the mounting and adjusting part, the relative position between the pressing member and the wedge block 303 inside the material guiding structure 300 changes, the telescopic frame 407 of the pressing member gradually expands and elongates, and the corrugated pressing plate 408 gradually unfolds until the support block 4072 at the bottom of the telescopic frame 407 disengages from the material guiding structure 300, and the telescopic frame 407 drives the corrugated pressing plate 408 to expand and fit with the packaging bag 200, adapting to the length of the packaging bag 200.

[0037] When the integral material pressing structure 400 penetrates deep into the packaging bag 200 until the alignment suction head 405 on the right rack plate 404 corresponds to the position of the right negative pressure suction head 102, at this time, the inside and outside of the right side of the packaging bag 200 are attracted in opposite directions by the alignment suction head 405 and the right negative pressure suction head 102, providing a stronger clamping force. At the same time, the mounting plate 403 moves down to the in-place position (this position can be controlled by a program or determined by the maximum stroke of the corresponding output end of the second telescopic mechanism connected to the mounting plate 403, that is, the corresponding telescopic end of the second telescopic mechanism extends to the maximum limit distance when the alignment suction head 405 is aligned with the right negative pressure suction head 102); then the second telescopic mechanism controls the downward movement of the pressing gear 401. Since the mounting plate 403 does not move and the pressing gear 401 moves downward, the limiting block 402 disengages from the limiting groove 4031, and the pressing gear 401 can rotate. At this time, the pressing gear 401 reaches the tooth position of the right rack plate 404 and meshes with both the left rack plate 406 and the right rack plate 404 simultaneously. Since the right rack plate 404 is fixedly connected to the mounting plate 403, the right rack plate 404 will not move. Then the pressing gear 401 moves relative to the right rack plate 404 and meshes with it, and the pressing gear 401 rotates counterclockwise. The left rack plate 406 meshes with the pressing gear 401, and the left rack plate 406 is slidably connected to the mounting plate 403. Therefore, the left rack plate 406 is continuously pushed downward by the counterclockwise rotation of the pressing gear 401. The wedge surface at the lower end of the left rack plate 406 is magnetically connected to the wedge surface of the telescopic frame 407. A corrugated pressing plate 408 is connected between the telescopic frames 407, and the corrugated pressing plate 408 directly applies the downward pressure to the tea leaves inside the packaging bag 200. As the pressing gear 401 moves downward, the pressure of the corrugated pressing plate 408 on the tea leaves gradually increases. When the top pressure between the corrugated pressing plate 408 and the tea leaves reaches the preset value, that is, the tea leaves are compressed to a certain degree of tightness, the downward movement of the pressing gear 401 causes the left rack plate 406 to overcome the magnetic attraction force between it and the telescopic frame 407, so that it moves downward relative to the telescopic frame 407, and the tea leaves are compressed to the ideal tightness. At the same time, the sensor transmits the signal of the relative movement between the left rack plate 406 and the telescopic frame 407 to the control system, and the adsorption forces of the left negative pressure suction head 101, the right negative pressure suction head 102, and the alignment suction head 405 are cancelled, so that the packaging bag 200 falls to the edge-sealing station. The sealing mechanism 700 compresses and seals the compressed packaging bag 200, and the sealed and shaped product can be discharged from the device through the discharging mechanism 800.

[0038] After that, under the action of magnetic suction force, the left rack plate 406 and the telescopic frame 407 reset to the initial mating position. The upward movement of the lower pressing gear 401 drives the pressing member to move upward. The gradual contraction of the telescopic frame 407 drives the corrugated pressing plate 408 to retract back into the material guiding structure 300. When the limiting block 402 on the lower pressing gear 401 re-enters the limiting groove 4031, the lower pressing gear 401 and the mounting plate 403 move upward synchronously to the initial position within the material guiding structure 300. After that, the material aligning and pressing structure 400 and the material guiding structure 300 move upward synchronously to the initial position. The right negative pressure suction head 102 sucks a new packaging bag 200, and the bagging of the next pack of tea starts.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tea automatic packaging device, characterized in that: include: A casing, wherein a bagging station is arranged in the casing, and a bag storage bin for storing packaging bags is arranged above one side of the bagging station; The left negative pressure suction head and the right negative pressure suction head are respectively located on the left and right sides of the bagging station. The left negative pressure suction head is fixedly installed on the casing, and the right negative pressure suction head is installed on the casing through a mechanical arm; A material guide structure is arranged on the casing and located above the bagging station, and the material guide structure can move up and down relative to the casing; a material inlet is arranged on the side of the material guide structure; The whole material pressing structure comprises an installation adjustment part and a top pressure piece, and the installation adjustment part comprises a mounting plate and a pressing gear; both the mounting plate and the pressing gear can be inserted into the material guide structure by sliding up and down; the left and right sides of the mounting plate are respectively provided with a left rack plate and a right rack plate, the right rack plate is vertically fixedly connected to the mounting plate, and the left rack plate is vertically connected to the mounting plate by sliding up and down; the pressing gear is clamped between the left rack plate and the right rack plate and can mesh with the left rack plate and the right rack plate, a square limit block is arranged on one side of the pressing gear, a limit slot is arranged on the mounting plate, and the limit block is slidably arranged in the limit slot up and down and can be disengaged from the limit slot; A positioning suction head is arranged on the side of the right rack plate away from the teeth; the top pressure piece is matched with the wedge surface at the lower end of the left rack plate and is magnetically connected; Wedge blocks are provided on the front and rear inner walls of the material guiding structure. The two wedge blocks are symmetrical and inclined from top to bottom toward the front and rear sides. The top pressure piece includes two telescopic frames that are slidably plugged in along the front and rear directions. An elastic piece is connected between the two telescopic frames. The elastic piece makes the two telescopic frames tend to move away from each other. The telescopic frame has an upper mating plate and a support block connected to the bottom of the upper mating plate. The upper mating plate is slidably matched with the wedge blocks. In the front and rear direction, the thickness of the support block is greater than the thickness of the upper mating plate and the two are coplanar on one side away from the wedge blocks. The bottom of the two support blocks is connected to a retractable corrugated pressure plate.

2. The automatic tea packaging device according to claim 1, characterized in that: The casing is provided with a first telescopic mechanism, which is used to control the material guiding structure to move up and down.

3. The automatic tea packaging device according to claim 1, characterized in that: The casing is provided with a second telescopic mechanism, which is used to control the installation plate and the pressing gear to move up and down.

4. The automatic tea packaging device according to claim 1, characterized in that: The automatic tea packaging device also includes a metering mechanism and a conveying mechanism; the metering mechanism is used to weigh the tea leaves and gradually put a certain amount of tea leaves into the conveying mechanism, and the conveying mechanism is used to convey a certain amount of tea leaves to the material guiding structure.

5. The automatic tea packaging device according to claim 1, characterized in that: The automatic tea packaging device also includes a sealing mechanism, which is arranged below the bagging station and is used to seal the packaging bag filled with tea.

6. The automatic tea packaging device according to claim 1, characterized in that: The automatic tea packaging device also includes a discharging mechanism, which is configured to receive the sealed packaging bags and transfer them to a discharging port for discharge.

7. The automatic tea packaging device according to claim 1, characterized in that: A storage hopper is arranged on the top of the casing, and the tea leaves to be packaged are stored in the storage hopper.

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