An automatic tea packaging device

Abstract

The present invention relates to the field of packaging, and particularly to an automatic tea packaging device. It includes a machine shell, a left negative pressure suction head and a right negative pressure suction head, a material guiding structure, and a material leveling and pressing structure; the right negative pressure suction head rotates to the lower part of the bag storage bin under the drive of a robotic arm to take out a packaging bag, and the left negative pressure suction head and the right negative pressure suction head jointly act to position the packaging bag and open the upper opening thereof. The material guiding structure and the material leveling and pressing structure move downward synchronously. The lower end of the material guiding structure is inserted into the packaging bag to send a fixed amount of tea into the packaging bag. Then, the material leveling and pressing structure moves downward, and the tea is pressed by a pressing member, so that the bottom of the packaging bag can be fully opened and the tea can be tightly pressed 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 slides relative to the installation and adjustment part, facilitating the control of the pressing force according to the compactness of the tea, making the compactness of each bag of tea basically the same, the shape of the tea after being pressed more regular, and the packaging more beautiful.

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 forms a regular shape at the bottom of the packaging bag. However, because the states of the tea when being bagged 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, causing the packaging bag to easily fall off, and the adaptability between the top pressing device and the packaging bag is not high, and sometimes it cannot press the entire surface of the tea, 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:

[0006] A machine shell, with a bagging station arranged inside the machine shell, and a bag storage bin for storing packaging bags is arranged above one side of the bagging station;

[0007] 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;

[0008] A feeding structure, which is arranged on 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;

[0009] 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 up-and-down manner; 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 slidably arranged in the limiting groove 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;

[0010] Wedge-shaped blocks are arranged on the front and rear inner side walls of the material guiding structure. The two wedge-shaped blocks are symmetrical 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 and rear directions. 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 and rear directions, the thickness of the support block is greater than that 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 telescopic corrugated pressing plate.

[0011] 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.

[0012] 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.

[0013] 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 into the conveying mechanism, and the conveying mechanism is used to convey the quantified tea to the material guiding structure.

[0014] 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.

[0015] 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 discharge port for discharging.

[0016] 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.

[0017] 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 is slidably arranged 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 the tea is pressed by the pressing member, so that the bottom of the packaging bag can be fully opened and the tea is tightly pressed 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, which is convenient to control the pressing force according to the compactness of the tea, 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, and the packaging is more beautiful.

[0018] Furthermore, 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.

[0019] Furthermore, by setting the pressing member as a telescopic structure, the pressing member can adapt to the length of the packaging bag, avoiding the situation that the entire tea surface cannot be pressed, and making the shape of the tea after being pressed more regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall mechanism of an automatic tea packaging device of the present invention;

[0022] Figure 2 is Figure 1 front view;

[0023] Figure 3 is Figure 2 enlarged view at A in

[0024] Figure 4 is Figure 3 cross-sectional view;

[0025] Figure 5 It is a schematic diagram of the material guiding structure and the material aligning and pressing-down structure in the present invention;

[0026] Figure 6 is the top view of Figure 5 ;

[0027] Figure 7 is Figure 6 the sectional view taken along line B-B in

[0028] Figure 8 the structural schematic diagram of the mounting plate, left rack plate and right rack plate in the present invention;

[0029] Figure 9 the structural schematic diagram of the lower pressing gear in the present invention;

[0030] Figure 10 is Figure 5 the side view (including the packaging bag) of

[0031] Figure 11 is Figure 10 the sectional view taken along line C-C in

[0032] In the figure:

[0033] 100, machine housing; 101, left negative pressure suction head; 102, right negative pressure suction head; 103, storage bag bin;

[0034] 200, packaging bag;

[0035] 300, material guiding structure; 301, material guiding hopper; 3011, feeding port; 302, supporting plate; 303, wedge block;

[0036] 400, material aligning and pressing down structure; 401, lower pressing gear; 402, limiting block; 403, mounting plate; 4031, limiting groove; 404, right rack plate; 405, alignment suction head; 406, left rack plate; 407, telescopic frame; 4071, mating plate; 4072, supporting block; 408, corrugated pressing plate;

[0037] 500, metering mechanism;

[0038] 600, conveying mechanism;

[0039] 700, sealing mechanism;

[0040] 800, discharging mechanism. Specific embodiments

[0041] 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.

[0042] 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 and a right negative pressure suction head 102, a material guiding structure 300, and a material leveling and pressing structure 400; a bagging station is arranged inside the machine housing 100, and a bag storage bin 103 is arranged above one side of the bagging station, and packaging bags 200 are stored in the bag storage bin 103.

[0043] 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 housing 100, and the right negative pressure suction head 102 is installed on the machine housing 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.

[0044] The material guiding structure 300 is arranged on the machine housing 100 and is located above the bagging station. The material guiding structure 300 can move up and down relative to the machine housing 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. A material inlet 3011 is arranged on the side surface of the material guiding hopper 301. The material inlet 3011 is configured to receive a fixed amount of tea and introduce it into the packaging bag 200 after the material guiding structure 300 moves down until its support plates 302 extend into the packaging bag 200.

[0045] The material leveling and pressing 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 housing 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, 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 is greater than a preset value.

[0046] In 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 then rotates to align parallel with the left negative pressure suction head 101. The left negative pressure suction head 101 and the right negative pressure suction head 102 work together to position the packaging bag 200 and open its upper opening. The feeding structure 300 and the material leveling and pressing structure 400 move downward synchronously until the lower end of the feeding structure 300 is inserted into the packaging bag 200. At this time, the feeding port 3011 on the feeding structure 300 is aligned with the output port of the previous process, and a fixed quantity of tea enters the packaging bag 200 through the feeding port 3011. It should be noted that the initial position of the material leveling and pressing structure 400 within the feeding structure 300 does not block or does not completely block the feeding port 3011, so as not to affect the feeding. Then, the material leveling and pressing structure 400 moves downward and presses the tea through the pressing member, so as to fully expand the bottom of the packaging bag 200 and tightly squeeze the tea at the bottom of the packaging bag 200. When the pressing force between the pressing member and the tea is greater than the preset value, the pressing member slides relative to the installation and adjustment part, which is convenient for controlling the pressing force according to the tightness of the tea. This can not only ensure that the tea is not damaged, but also make the tightness of each bag of tea basically the same, and the shape of the tea after being pressed is more regular, making the packaging more beautiful.

[0047] 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.

[0048] The metering mechanism 500 is used to weigh the tea and successively release a fixed quantity of tea to the conveying mechanism 600. The conveying mechanism 600 is used to convey the fixed quantity of tea to the feeding structure 300. A sealing edge station is arranged below the bagging station. The sealing mechanism 700 is arranged at the sealing edge station. After the packaging bag 200 filled with tea drops to the sealing edge station, it is sealed under the extrusion of the sealing mechanism 700. During sealing, the sealing mechanism 700 extrudes and exhausts the tea bag at a preset position (this position is adjacent to the tea) above the tea in the tea bag and seals its opening. After sealing, the air above the tea inside the packaging bag 200 is discharged, and the tea at the bottom is compact and presents a regular shape adapted to the tea bag. An outlet is arranged at the bottom of the machine shell 100, and the discharging mechanism 800 is configured to receive the sealed packaging bag 200 and transfer it to the outlet for discharge.

[0049] Furthermore, a first telescopic mechanism and a second telescopic mechanism are arranged on the machine shell 100. The first telescopic mechanism is used to control the up and down movement of the feeding structure 300, and the second telescopic mechanism is used to control the up and down movement of the installation and adjustment part.

[0050] 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.

[0051] The limit structure is provided between the pressure gear 401 and the mounting plate 403, and the limit structure is configured to prevent the pressure gear 401 from rotating; in the initial state, the mounting plate 403 and the pressure gear 401 are both in the upper limit position, the pressure gear 401 is meshed with the left rack plate 406, and the limit structure prevents the pressure gear 401 from rotating, and the mounting plate 403, the left rack plate 406, the right rack plate 404 and the pressure gear 401 can move downward synchronously; after the mounting plate 403 moves to the lower limit position, as the pressure gear 401 moves downward, the pressure gear 401 gradually disengages from the mounting plate 403, and after the pressure gear 401 disengages from the mounting plate 403, the limit structure fails, and at the same time, the pressure gear 401 is meshed with the left rack plate 406 and the right rack plate 404; the top pressure piece cooperates with the lower end wedge surface of the left rack plate 406 and is connected by magnetic attraction, for details, refer to Figure 4 and Figure 5 A wedge-shaped groove is provided on the top pressure piece, and the lower end of the left rack plate 406 is set as a wedge-shaped tip adapted to the wedge-shaped groove on the top pressure piece. The wedge-shaped tip is inserted into the wedge-shaped groove and the matching 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 top pressure between the top pressure piece and the tea leaves reaches a preset value (that is, after the tea leaves are compacted), the left rack plate 406 can overcome the magnetic attraction between it and the top pressure piece, thereby moving downward relative to the top pressure piece.

[0052] Further, the limiting structure includes a limiting block 402 and a limiting groove 4031. The limiting block 402 is arranged 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 arranged on the mounting plate 403. The limiting block 402 is arranged in the limiting groove 4031 so as to be able to slide up and down and can be disengaged from the limiting groove 4031. When the limiting block 402 is located in the limiting groove 4031, it hinders the rotation of the downward pressing gear 401. 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, referring 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. Initially, the limiting block 402 is located in the limiting groove 4031 to hinder the rotation of the downward pressing gear 401. At the same time, the downward pressing 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 pressing 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 pressing 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 pressing gear 401 continues to move down and drives the left rack plate 406 to move down. Then, the limiting block 402 on the downward pressing gear 401 disengages from the limiting groove 4031, and the downward pressing gear 401 meshes with both the left rack plate 406 and the right rack plate 404. After that, as the downward pressing gear 401 moves down, the downward pressing gear 401 rolls relative to the right rack plate 404 and drives the left rack plate 406 to continue to move down, thereby enabling the pressing member to press the tea leaves. After the pressing member presses the tea leaves, 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 constant pressure reduction). 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 falls to the edge sealing station. To ensure that the packaging bag 200 can fall smoothly, after the tea leaves are compacted, the downward pressing 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.

[0053] 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 that the positioning suction head 405 is set on the right rack plate 404 to increase the clamping force on the packaging bag 200, and the left rack plate 406 is used to drive the pressing part to press the tea leaves, and the force stability of the device is further improved through the engagement of the pressing gear 401 with the left rack plate 406 and the right rack plate 404, so that the pressing part will not generate eccentric torque and the pressed tea leaves will be more regular.

[0054] 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.

[0055] 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.

[0056] Combined with the above embodiments, the working principle and process of the present invention are as follows:

[0057] A storage hopper is provided at the top of the machine casing 100. The tea leaves to be packaged are stored in the storage hopper. When the equipment is started, the tea leaves in the discharge hopper fall into the metering mechanism 500 for quantitative weighing. After weighing, the tea leaves are conveyed to the guiding structure 300 by the conveying mechanism 600 at a certain rhythm.

[0058] A plurality of packaging bags 200 stacked vertically are stored in the bag storage bin 103. The robotic arm controls the right negative pressure suction head 102 to rotate to the lower part of the bag storage bin 103, and sucks out one (the lowermost one) of the packaging bags 200 in the bag 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.

[0059] The guiding structure 300 and the material aligning and pressing-down structure 400 move downward synchronously. When the support plate 302 of the guiding structure 300 is inserted into the interior of the packaging bag 200, at this time, the guiding structure 300 reaches its in-place position (this position can be controlled by a program or by the maximum stroke of the first telescopic mechanism), and the material inlet 3011 corresponds to the output port of the conveying mechanism 600. The quantitatively taken-out tea leaves enter the interior of the packaging bag 200 through the guiding structure 300. During this process, there is no relative displacement between the guiding structure 300 and the material aligning and pressing-down structure 400, and the telescopic frame 407 is in the shortest state, and the corrugated pressing plate 408 is restricted inside the guiding structure 300.

[0060] Next, control the mounting plate 403 and the pressing-down gear 401 of the material aligning 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 engaged with the left rack plate 406 but does not move relatively; at the same time, in this stage, since the position of the 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 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 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.

[0061] 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 inner and outer sides 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-shaped surface at the lower end of the left rack plate 406 is magnetically connected to the wedge-shaped 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 the left rack plate 406 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 left negative pressure suction head 101, the right negative pressure suction head 102, and the alignment suction head 405 cancel the suction force, so that the packaging bag 200 falls to the edge sealing station, and the sealing mechanism 700 seals and compresses the compressed packaging bag 200, and then it can be discharged from the device through the discharging mechanism 800 after being sealed and shaped.

[0062] After that, the left rack plate 406 and the telescopic frame 407 are reset to the initial mating position under the action of magnetic suction force. 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 feeding 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 feeding structure 300. After that, the material sorting and pressing structure 400 and the feeding 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.

[0063] 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 within the protection scope of the present invention.

Claims

1. An automatic tea packaging device, characterized in that, Including: A casing, inside which a bagging station is provided, and above one side of the bagging station, a bag storage bin for storing packaging bags is provided; 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 casing, and the right negative pressure suction head is installed on the casing through a robotic arm; A material guiding structure, which is arranged on the casing and above the bagging station, and the material guiding structure can move up and down relative to the casing; a material inlet is arranged on the side of the material guiding structure; A material aligning and pressing structure, which includes an installation and adjustment part and a pressing member. The installation and adjustment part includes a mounting plate and a pressing gear; both the mounting plate and the pressing gear are slidably inserted into the material guiding structure; a left rack plate and a right rack plate are respectively installed on the left and right sides of the mounting plate. The right rack plate is perpendicularly and fixedly connected to the mounting plate, and the left rack plate is perpendicular to the mounting plate and slidably connected 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 mounting plate. The limiting block is slidably arranged in the limiting groove 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 member is in wedge-shaped 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 symmetrical and inclined from top to bottom towards the front and rear sides. The pressing member includes two telescopic frames slidably inserted in the front-rear direction. An elastic member is connected between the two telescopic frames, and the elastic member 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 mated with the wedge-shaped block. In the front-rear direction, the thickness of the support block is greater than that 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 telescopic corrugated pressing plate.

2. The automatic tea packaging device according to claim 1, characterized in that, A first telescopic mechanism is arranged on the casing, and the first telescopic mechanism is used to control the up and down movement of the material guiding structure.

3. The automatic tea packaging device according to claim 1, characterized in that, A second telescopic mechanism is arranged on the casing, and the second telescopic mechanism is used to control the up and down movement of the mounting plate and the pressing gear.

4. An automatic tea packaging device according to claim 1, characterized in that, The automatic tea packaging device further includes a metering mechanism and a conveying mechanism; the metering mechanism is used to weigh the tea and sequentially release the quantified tea to the conveying mechanism, and the conveying mechanism is used to convey the quantified tea to the material guiding structure.

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

6. The automatic tea packaging device according to claim 1, wherein, The automatic tea packaging device further includes a discharging mechanism, which is configured to receive the sealed packaging bag and transfer it to the discharging port for discharging.

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 to be packaged is stored in the storage hopper.

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