Stacking device for valve bag production

Abstract

The invention discloses a stacking device for valve bag production, and relates to the technical field of stacking devices.The stacking device comprises a supporting frame, a limiting component and a stacking robot, the stacking robot is fixedly installed at the top of the supporting frame, and the limiting component is used for avoiding stacking deflection; the limiting component is provided with two stacking stations, and the conveying component is arranged at the output end of external valve bag production equipment and used for stacking and aligning a plurality of valve bags. The two stations are arranged, when stacking is conducted on one station, the gravity, corresponding to the station, of the lifting plate is increased, so that the lifting plate descends by the corresponding height under the action of the control assembly, and the lifting plates on the two stations are fixedly connected to the same chain; when the lifting plate on the stacked station descends along with the gravity, the lifting plate on the non-stacked station ascends by the same distance, extra power is not needed to drive the lifting plates to move in the process, the implementation cost is saved, meanwhile, midway waiting is not needed, and the stacking efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of palletizing devices, and particularly relates to a palletizing device for the production of valve bags. Background Art

[0002] Valve bags are special containers widely used in the packaging of powdery, granular and flexible materials. Their characteristic is that a cylindrical valve opening is provided on the bag body, which can achieve efficient filling and reduce material leakage. According to different materials, valve bags can be divided into types such as polypropylene, polyethylene, paper-plastic composite and multi-layer kraft paper. Among them, PP woven valve bags have become the preferred packaging form in fields such as chemical industry, building materials, and grain due to their high strength and wear resistance; valve bags form special packaging bags with cylindrical valve openings at the top of the bag body through a heat-sealing process, and finally complete production on the production line by being output one by one at intervals by a conveyor line (there are distances and time intervals between the outputs of adjacent valve bags).

[0003] The existing valve bag palletizing mainly relies on manual or semi-automatic equipment to complete. For example, the prior art discloses a valve bag palletizing device (publication number is CN220664161U). This patent "includes a mounting frame, on which a positioning frame is movably arranged. The upper and lower ends of the positioning frame are open structures, and valve bags can be stacked and dropped into the positioning frame. The positioning frame is connected to a lifting drive assembly, and also includes an induction control assembly. After receiving a signal, the induction control assembly can control the lifting drive assembly to drive the positioning frame to act, and a stacking bag tray can be arranged below the positioning frame. The structure of this application is simple and reasonably designed. By setting a liftable positioning frame, the positioning and stacking collection of valve bags can be realized, avoiding the skew or even overturning of valve bags during the stacking process, and effectively improving the flatness of valve bag stacking."

[0004] However, since the positioning frame in the solution needs to be lifted upward according to the height of upward palletizing, the palletizing height also needs to rise accordingly. The manual palletizing method has great inconvenience in dealing with the above high positions. For example, when the positioning frame rises to a high position (when palletizing to a high position), the operator needs to climb to the high position with valve bags, and the operation amount is large and there is a certain risk; moreover, during the movement of the positioning frame, it needs to be driven and pulled by a sensor and a motor (automatically controlling the positioning frame to rise to the corresponding height along with the palletizing height), and the implementation cost and difficulty are relatively high. And after palletizing is completed, it is necessary to wait for the forklift to transport the goods away before the device can be reset. Therefore, there is a long waiting period in the middle, which affects the operation efficiency. Moreover, the valve bag production device produces continuously, so it is difficult to coordinate the production and palletizing processes. Summary of the Invention

[0005] The purpose of the present invention is to provide a palletizing device for the production of valve bags to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A palletizing device for the production of valve bags, comprising a support frame, a limiting component and a palletizing robot. The palletizing robot is fixedly installed at the top of the support frame, and the limiting component is used to prevent palletizing skew; there are two palletizing stations on the limiting component, and it further includes: a transfer component, arranged at the output end of an external valve bag production device, used to stack and align multiple valve bags; a switching component, installed at the bottom of the palletizing robot, used to switch the palletizing station corresponding to the palletizing robot; the limiting component includes a lifting frame, a limiting frame and a lifting plate. There are two limiting frames and two lifting plates. Notches are provided on both sides of the limiting frame. The limiting frame is fixedly connected to the upper part inside the lifting frame. Two groups of vertical slide rails are symmetrically arranged inside the lifting frame, and the two lifting plates are respectively slidably connected to the two groups of slide rails; two traction shafts are rotatably connected to the part of the lifting frame between the two stations. Traction sprockets are fixedly connected to the outside of the traction shafts, and the traction sprockets are connected by a chain drive. Both sides of the chain are fixedly connected to the two lifting plates respectively; a control box is fixedly connected to one side of the lifting frame, and a control component is arranged inside the control box. The control component is used to control the descending position of the lifting plate according to the number of valve bags being palletized.

[0007] By adopting the above technical solution, through the setting of the transfer component, a certain number of valve bags can be centrally collected and sorted to align the edges and corners to form a valve bag stack. Then, the palletizing robot is used to clamp the stacked valve bag stack and stack it on the forklift board on the lifting plate, thereby replacing the manual palletizing process and solving the problems of inconvenient operation and risks when manually palletizing to a high position.

[0008] Furthermore, by setting two stations, when palletizing at one of the stations, the gravity on the corresponding lifting plate at this station increases. Thus, under the action of the control component, the lifting plate descends by a corresponding height until the lifting plate descends to the lowest position. At this time, the number of valve bags palletized on the lifting plate reaches the upper limit, and it can be transported away by a forklift; during this process, since the two lifting plates at the two stations are fixedly connected to the same chain and are located on both sides of the chain, when the lifting plate at the palletizing station descends with gravity, the lifting plate at the non-palletizing station will rise by the same distance. Until the palletizing is completed, the lifting plate at the non-palletizing station rises to the initial palletizing position. By using the switching component to switch the palletizing robot to the non-palletizing station, a new round of palletizing operation can be carried out. The process does not require additional power to drive the lifting plate to move, saving the implementation cost and also not requiring waiting in the middle, thus improving the palletizing efficiency.

[0009] A further improvement of the technical solution of the present invention lies in that: the control component includes a mounting plate fixedly connected to the inner wall of the control box. A first sliding rod is slidably connected through the mounting plate. Both ends of the first sliding rod are fixedly connected with end blocks. On the outside of the first sliding rod and on both sides of the mounting plate, first springs are sleeved. A first rack is fixedly connected between the sides of the two end blocks close to each other. One end of the traction shaft extends into the control box and is fixedly connected with a first gear. One side of the inner wall of the control box is rotatably connected with a second gear. The second gear is meshed with the first gear and is also meshed with the first rack. Two cushion blocks are slidably connected to the outside of the first sliding rod. Two electromagnetic lock structures are fixedly installed inside the control box. Lock holes corresponding to and cooperating with the two electromagnetic lock structures are respectively formed on the two cushion blocks. An electric lock for locking the lifting plate is installed on the limiting frame.

[0010] With the above technical solution, by setting a control system (control component) realized by the transmission of the rack and the gear, the process does not need to rely on sensors and complex electrical control systems, thus simplifying the implementation process and saving the implementation cost.

[0011] A further improvement of the technical solution of the present invention lies in that: a pressure rod is fixedly connected to one of the end blocks. A slow-down cylinder is fixedly connected inside the control box. A piston plate is slidably connected between the inner walls of the slow-down cylinder. The piston plate is fixedly connected with the pressure rod. The slow-down cylinder is provided with a current-limiting pipe communicated with the outside.

[0012] With the above technical solution, by setting a speed-limiting structure composed of a slow-down cylinder, a piston plate and a current-limiting pipe to limit the movement process of the lifting plate, the movement process of the lifting plate becomes smoother. At the same time, the three form a system similar to a damper, thus alleviating the problem of the lifting plate shaking. Specifically, during the movement of the end block, the pressure rod and the piston plate are driven to move. During the movement of the piston plate, the air pressure inside the slow-down cylinder changes, and correspondingly, air is inhaled from the outside or discharged through the current-limiting pipe. However, due to the limitation of the diameter of the current-limiting pipe, the air passes through slowly, which will limit the movement of the piston plate, thereby realizing speed limitation, that is, making the movement of the end block, the first sliding rod and the first rack relatively slower and smoother. Furthermore, the first gear, the traction shaft and the traction sprocket rotate slower, thereby realizing the speed limitation of the lifting plate. During the above speed-limiting process, at the same time, the air pressure also limits the shaking frequency of the spring. The shaking process is affected by the fact that the air pressure cannot change quickly, thereby suppressing the shaking process, and thus improving the stability of the palletizing process.

[0013] A further improvement of the technical solution of the present invention is that: the transfer component includes a transfer frame, a right prism is rotatably connected between the inner sides of the transfer frame, a transfer motor is fixedly connected to one side of the transfer frame, one end of the central axis of the right prism extends to the outside of the transfer frame and is fixedly connected to the output end of the transfer motor, and a partition plate is fixedly connected to each surface of the outer wall of the right prism; a through groove is provided in the middle of the partition plate, a slide rail is fixedly connected to one side of the partition plate, a slide bar is slidably connected to the outside of the slide rail, an L-shaped plate is fixedly connected to one side of the slide bar, one end of the inner side of the L-shaped plate is set to an arc structure, and the L-shaped plate is slidably connected to the through groove; both sides of the partition plate are provided with a giveway groove for the stacking robot to clamp the valve bag, and a counterweight block is fixedly connected to the outside of the L-shaped plate.

[0014] By adopting the above technical solution, during the process of transporting materials with the partition plate, the L-shaped plate slides under the action of gravity along with the rotation angle. When the L-shaped plate moves to a state close to the partition plate, the L-shaped plate limits the valve bag to prevent it from falling. When the L-shaped plate moves to a state away from the partition plate, it automatically resets to make room for stacking the valve bag.

[0015] A further improvement of the technical solution of the present invention is that: a gantry is fixedly connected to the upper part of the transfer frame, a transmission box is fixedly connected to the top of the gantry, a material-forming motor is fixedly connected to the outer side of the transmission box, an output end of the material-forming motor extends to the interior of the transmission box and is fixedly connected to the third gear, two strip grooves are symmetrically provided on the top of the gantry, a second slide bar is fixedly connected to the interior of the strip grooves, a connecting piece is slidably connected to the outer wall of the first slide bar, a second rack is slidably connected to the interior of the transmission box, one end of the connecting piece is fixedly connected to the second rack, the second rack is meshed with the third gear, and an end of the connecting piece away from the second rack extends to the outside of the transmission box and is fixedly connected to a push plate.

[0016] By adopting the above technical solution, during the rotation of the partition plate carrying the valve bag, the whole material motor is controlled to work, driving the third gear to rotate, thereby driving the two second racks to move closer to the middle, and then driving the push plates to move synchronously toward the adjacent side through the connecting piece until the distance between the two push plates on the adjacent side is the width of the valve bag, thereby realizing the alignment operation of the valve bag. After the alignment is completed, the output shaft of the whole material motor is controlled to reset, so that the push plates are reset and will not block the partition plate from passing when it is flipped. The above alignment operation process occurs during the stacking process of the valve bags at the subsequent workstations, so there is no need to wait in the middle and it will not affect the work efficiency.

[0017] A further improvement of the technical solution of the present invention lies in that: two fixing plates are symmetrically and fixedly connected to one side of the gantry. A pressing rod is slidably connected through the fixing plates. One end of the pressing rod is connected to an arc plate by a screw. A limiting block is fixedly connected to the end of the pressing rod away from the arc plate. A second spring is sleeved on the outer part of the pressing rod between the fixing plate and the arc plate. Friction strips are connected to both sides of the partition plate by screws. The sides of the friction strips close to the arc plate are both set as rough surfaces.

[0018] With the above technical solution, by setting the friction strip and the arc plate, and both sides close to each other are set as rough surfaces, jitter is generated when they come into contact and move relative to each other, so as to promote the natural sliding of the counterweight block, the L-shaped plate and the slide bar. At the same time, the jitter can make the valve bag move naturally towards the direction close to the regular prism until it contacts the regular prism.

[0019] A further improvement of the technical solution of the present invention lies in that: a pressure sensor is fixedly installed at the middle position on the side of the gantry close to the fixing plate. The pressure sensor and the transfer motor are both electrically connected to an external controller.

[0020] With the above technical solution, a pressure sensor is provided on the side of the gantry close to the fixing plate. When the L-shaped plate is not completely "retracted" so that it can contact the gantry, as the regular prism rotates, the L-shaped plate will first contact and press the pressure sensor. At this time, the pressure sensor collects a pressure signal, that is, the transfer motor is controlled by the external controller to reverse appropriately and then continue to rotate forward until the pressure sensor no longer collects a signal.

[0021] A further improvement of the technical solution of the present invention lies in that: the switching component includes a base. A switching motor is fixedly connected to the top inside the base. The output end of the switching motor extends above the base and is fixedly connected to a rotating plate. The palletizing robot is fixedly installed on one side of the top of the rotating plate.

[0022] With the above technical solution, by controlling the switching motor to work and drive the rotating plate to rotate, the palletizing robot rotates to a position that is centrosymmetric with the original position. The material taking position and the material placing position of the palletizing robot remain unchanged relative to itself. Therefore, there is no need to specifically set the material taking or material placing program. That is, after switching by the switching component, the palletizing robot only needs to follow the original material taking and material placing positions, which simplifies the control process of the palletizing robot.

[0023] A further improvement of the technical solution of the present invention lies in that: the diameter of the second gear is larger than the diameter of the first gear.

[0024] By adopting the above technical solution, since the diameter of the second gear is set to be larger than that of the first gear, the first gear needs to rotate more turns to drive the second gear to rotate, which requires a greater torque and a smaller amount of rotation. That is, the first gear needs to rotate more turns to drive the second gear to rotate one circle, which means that the moving distance of the first rack relative to the lifting plate is shorter. The setting background is that the normal stretching range of a general spring has a relatively large gap compared to the palletizing height. That is, when relying on the deformation of the first spring to directly feedback the force on the lifting plate, the deformation amount of the first spring is insufficient.

[0025] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is as follows: 1. By setting two workstations in the present invention, when palletizing at one of the workstations, the gravity on the corresponding lifting plate of this workstation increases. Thus, under the action of the control component, the lifting plate descends by a corresponding height until the lifting plate descends to the lowest position. At this time, the valve pockets palletized on the lifting plate reach the upper limit, and then they can be transported away by a forklift. During this process, since the lifting plates on the two workstations are fixedly connected to the same chain and are located on both sides of the chain, when the lifting plate at the palletizing workstation descends due to gravity, the lifting plate at the non-palletizing workstation will rise by the same distance until the lifting plate at the non-palletizing workstation rises to the initial palletizing position when the palletizing is completed. By using the switching component to switch the palletizing robot to the non-palletizing workstation, a new round of palletizing operations can be carried out. The process does not require additional power to drive the lifting plate to move, saving the implementation cost and also not requiring waiting in the middle, thus improving the palletizing efficiency.

[0026] 2. The present invention provides a palletizing device for valve pockets. By setting a control component realized by the transmission of a rack and a gear, the process does not need to rely on sensors and complex electrical control systems, thereby simplifying the implementation process and further saving the implementation cost.

[0027] 3. By setting a speed-limiting structure composed of a slow-down cylinder, a piston plate, and a flow-limiting pipe to limit the movement process of the lifting plate, the movement process of the lifting plate becomes smoother. At the same time, the three components form a system similar to a damper, thus alleviating the problem of the lifting plate shaking. Specifically, during the movement of the end block, the pressure rod and the piston plate are driven to move. During the movement of the piston plate, the air pressure inside the slow-down cylinder changes, and correspondingly, air is inhaled from the outside or discharged through the flow-limiting pipe. However, due to the limitation of the pipe diameter of the flow-limiting pipe, the air passes through slowly, which will limit the movement of the piston plate, thereby achieving speed limitation, that is, making the movement of the end block, the first sliding rod, and the first rack relatively slower and smoother.

[0028] 4. During the rotation of the separator-carrying valve pocket, by controlling the operation of the whole-material motor, the third gear is driven to rotate, thereby driving the two second racks to move closer to the middle. Then, through the connecting piece, the push plate is driven to move synchronously towards the approaching side until the distance between the approaching sides of the two push plates is the width of the valve pocket, achieving the alignment operation of the valve pocket. After the alignment is completed, the output shaft of the whole-material motor is controlled to reset, causing the push plate to reset, so as not to block the passage when the separator flips; the above alignment operation process occurs during the stacking process of the valve pockets at the subsequent workstations, so there is no need to wait in the middle and it will not affect the work efficiency.

[0029] 5. The present invention provides a palletizing device for the production of valve pockets. By setting up a transfer component, a certain number of valve pockets can be centrally collected and sorted to align the edges and corners to form a valve pocket stack. Then, the palletizing robot is used to clamp the stacked valve pocket stack and stack it on the forklift board on the lifting plate, thereby replacing the manual palletizing process and solving the problems of inconvenient operation and risks when manually palletizing to high positions. Brief Description of the Drawings

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic structural diagram of the whole of the present invention from the first perspective; Figure 2 It is a schematic structural diagram of the whole of the present invention from the second perspective; Figure 3 It is a schematic structural diagram of the limiting component of the present invention from the first perspective; Figure 4 It is a schematic structural diagram of the limiting component of the present invention from the second perspective; Figure 5 It is a schematic structural diagram of the limiting component of the present invention from the third perspective; Figure 6 It is a schematic structural diagram of the transfer component of the present invention from the first perspective; Figure 7 It is a schematic structural diagram of the transfer component of the present invention from the second perspective; Figure 8 It is a schematic structural diagram of the transfer component of the present invention from the third perspective; Figure 9 It is a schematic internal structural diagram of the electromagnetic lock structure of the present invention; Figure 10 It is a schematic structural diagram of the slow-down cylinder of the present invention; Figure 11 For the present invention Figure 4 Enlarged view at A in

[0032] In the figure: 1, support frame; 2, lifting frame; 3, limit frame; 4, lifting plate; 5, traction shaft; 6, traction sprocket; 7, palletizing robot; 8, control box; 9, first gear; 10, second gear; 11, mounting plate; 12, first slide bar; 13, first spring; 14, cushion block; 15, lock hole; 16, end block; 17, electromagnetic lock structure; 18, pressure bar; 19, retarder cylinder; 20, piston plate; 21, flow-limiting pipe; 22, transfer rack; 23, regular prism; 24, partition plate; 25, transfer motor; 26, slide bar; 27, slide rail; 28, L-shaped plate; 29, counterweight; 30, transmission box; 31, strip-shaped groove; 32, second slide bar; 33, sorting motor; 34, third gear; 35, push plate; 36, second rack; 37, pressure sensor; 38, fixing plate; 39, pressing bar; 40, arc plate; 41, limit block; 42, second spring; 43, friction strip; 44, first rack; 45, rotating plate; 46, switching motor; 47, gantry; 48, connecting piece; 49, base. Detailed implementation mode

[0033] The present invention will be further described in detail below with reference to the embodiments.

[0034] Embodiment 1 As Figure 1 、 Figure 3 and Figure 4 shown, the present invention provides a palletizing device for valve pocket production, including a support frame 1, a limiting component and a palletizing robot 7. The palletizing robot 7 is fixedly installed on the top of the support frame 1, and the limiting component is used to prevent palletizing skew; there are two palletizing stations on the limiting component, and further includes: a transfer component, arranged at the output end of an external valve pocket production device, for stacking and aligning multiple valve pockets; a switching component, installed at the bottom of the palletizing robot 7, for switching the corresponding palletizing station of the palletizing robot 7; the limiting component includes a lifting frame 2, a limiting frame 3 and a lifting plate 4. There are two limiting frames 3 and two lifting plates 4. Notches are arranged on both sides of the limiting frame 3. The limiting frame 3 is fixedly connected to the upper part inside the lifting frame 2. Two groups of vertical slide rails 27 are symmetrically arranged inside the lifting frame 2. The two lifting plates 4 are respectively slidably connected to the two groups of slide rails 27; two traction shafts 5 are rotatably connected to the part of the lifting frame 2 between the two stations. Traction sprockets 6 are fixedly connected to the outside of the traction shafts 5. The traction sprockets 6 are connected by a chain drive. Both sides of the chain are fixedly connected to the two lifting plates 4 respectively; a control box 8 is fixedly connected to one side of the lifting frame 2. A control component is arranged inside the control box 8. The control component is used to control the descending position of the lifting plate 4 according to the number of valve pockets to be palletized. A forklift plate is placed on the top of the lifting plate 4. The palletizing robot 7 is used to pick up the stacked valve pockets on the transfer component and palletize them on the forklift plate.

[0035] In this embodiment, by setting up a transfer component, a certain number of valve bags can be centrally collected (counted by a counting sensor, and the specific number is set according to requirements), sorted out so that the corners are aligned to form a stack of valve bags, and then the palletizing robot 7 is used to pick up the stacked valve bag stack and stack it on the forklift board on the lifting plate 4 (a forklift board is placed on the top of the lifting plate 4 for stacking valve bags), thus replacing the manual palletizing process and solving the problems of inconvenient operation and risks when manually palletizing to high positions.

[0036] Moreover, compared with the traditional technology that relies on sensors to collect palletizing position signals, processes the signals through a processor, transmits the signals to the controller, and then controls the positioning frame to move to the corresponding height position, the implementation cost is relatively high and the control system is complex. In this solution, by setting the limiting component into two workstations, palletizing is carried out alternately at the two workstations. The fundamental difference from the traditional technology is that at the initial stage of palletizing, the forklift board (placed on the top of the lifting plate 4) is at a high position, and as the mass of the objects on the forklift board increases during the palletizing process, it moves downward along with the change of gravity. That is, the change of gravity is used as the signal for the lifting plate 4 on the palletizing workstation to descend, driving it to descend by a corresponding height. At the same time, the lifting plate 4 on another workstation (the non-palletizing workstation) rises by a corresponding height (connected by the same chain), so that when the lifting plate 4 on the palletizing workstation descends to the lowest position, the lifting plate 4 on the other workstation rises to the highest height, and a new round of palletizing operation can be carried out. At this time, by switching the operation of the switching component, the palletizing robot 7 is switched to another workstation to perform the palletizing operation of the other workstation, thus eliminating the need to rely on complex sensors and power drive to control the movement of the positioning frame (i.e., the limiting frame 3 in this solution), reducing the implementation cost. Specifically, in this solution, there are two workstations (a palletized workstation and a non-palletized workstation, the non-palletized workstation is in an idle state and is reset along with the palletizing process of the palletizing workstation). When palletizing is performed at one of the workstations, the gravity on the lifting plate 4 corresponding to the workstation increases (the forklift plate is placed on the lifting plate 4, and the valve bags are stacked on the forklift plate), so that the lifting plate 4 is lowered to a corresponding height under the action of the control component until the lifting plate 4 is lowered to the lowest position. At this time, the valve bags stacked on the lifting plate 4 reach the upper limit and can be transported away by a forklift. In this process, since the lifting plates 4 on the two workstations are fixedly connected to the same The palletizing robots 7 are on a chain and are located on both sides of the chain. Therefore, when the lifting plate 4 on the palletized station drops due to gravity, the lifting plate 4 on the non-palletized station will rise the same distance, until the palletizing is completed, the lifting plate 4 on the non-palletized station will rise to the initial palletizing position. The palletizing robot 7 can be switched to the non-palletized station by switching components to carry out a new round of palletizing operation. The process does not require additional power to drive the positioning frame (the limit frame 3 in this solution) to move, saving implementation costs, and no waiting in the middle, thereby improving palletizing efficiency (two station switching operations save waiting time for transfer and reset operations).

[0037] It should be noted that two auxiliary sprockets are provided on both sides of the lifting frame 2, and the auxiliary sprockets are connected to each other through an auxiliary chain transmission. The side of the lifting plate 4 away from the traction chain is connected to the auxiliary chain, and the central axis of the auxiliary sprocket is connected to the traction shaft 5. The auxiliary sprocket can rotate with the traction sprocket 6, so that the drives on both sides of the lifting plate 4 can move synchronously (rise or fall); Specifically, Figure 4 As shown, a first bevel gear is fixedly connected to the central axis of the traction sprocket 6, and an auxiliary sprocket is connected to the central axis of the auxiliary sprocket. A transmission shaft is rotatably connected between the inner walls of the control box 8, and two end bevel gears and two middle bevel gears are fixedly connected to the outer wall of the transmission shaft, wherein the middle bevel gears are meshed with the first bevel gears, and the end bevel gears are meshed with the second bevel gears, and the two end bevel gears are oriented in opposite directions, so that the transmission directions of the central axes of the auxiliary sprockets at both ends are opposite (the moving directions of the two sides of the chain at the middle position are also opposite), so that the two stations The lifting plates 4 on the palletizing stations move synchronously and in opposite directions. Therefore, during the palletizing process of the palletized stations, the lifting plate 4 on the station moves downward to perform the palletizing operation. Correspondingly, the lifting plate 4 on the other station moves upward until it is at the highest position (the initial height position of palletizing). The entire palletizing process does not require the limit frame 3 to rise or fall itself, but relies on the lifting plate 4 to descend relative to the limit frame 3 to achieve the limit. Therefore, there is no need to actively drive the limit frame 3 or the lifting plate 4 to move, saving implementation costs (including control costs and driving costs).

[0038] Example 2 As Figure 4 , Figure 9 and Figure 11 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the control assembly includes a mounting plate 11 fixedly connected to the inner wall of the control box 8. A first sliding rod 12 is slidably connected through the mounting plate 11. End blocks 16 are fixedly connected to both ends of the first sliding rod 12. First springs 13 are sleeved on both sides of the first sliding rod 12 outside the mounting plate 11. A first rack 44 is fixedly connected between the sides of the two end blocks 16 close to each other. One end of the traction shaft 5 extends into the control box 8 and is fixedly connected to a first gear 9. A second gear 10 is rotatably connected to one side of the inner wall of the control box 8. The second gear 10 is meshed with the first gear 9 and is also meshed with the first rack 44. Two cushion blocks 14 are slidably connected to the outside of the first sliding rod 12. Two electromagnetic lock structures 17 are fixedly installed inside the control box 8. Lock holes 15 corresponding to and cooperating with the two electromagnetic lock structures 17 are formed in the two cushion blocks 14. The electromagnetic lock structure 17 includes a housing, an electromagnet, a lock tongue, a spring and an iron column. An electric lock for locking the lifting plate 4 is installed on the limiting frame 3.

[0039] In this embodiment, by setting a control system (control assembly) realized by relying on the transmission of the rack and the gear, the process does not need to rely on sensors and complex electrical control systems, thus simplifying the implementation process and further saving the implementation cost. Specifically, during the palletizing process at the palletizing station, the first gear 9 in the middle position rotates, drives the second gear 10 to rotate, and then drives the first rack 44 to move axially. During this process: When the first rack 44 moves in one direction, it drives one of the cushion blocks 14 to move and compress the first spring 13 in contact with the cushion block 14. According to Hooke's law, the deformation of the spring is proportional to the magnitude of the elastic force generated by the spring. That is to say, every time a stack of valve bags is placed on the lifting plate 4, the mass on the lifting plate 4 increases. Through the above control components, the lifting plate 4 descends a fixed distance (this distance x = mg / k, where m is the mass of each stack of valve bags and k is the elastic coefficient of the first spring 13), and at the same time drives the other lifting plate 4 to rise an equal distance through the chain; until the locking tongue in the electromagnetic lock structure 17 on this side is facing the lock hole 15, and under the action of the spring inside the electromagnetic lock structure 17, the locking tongue pops out and is inserted into the lock hole 15 to complete the locking. At this time, the first spring 13 on this side cannot be reset; thus, no elastic force is exerted on the end block 16 on this side (the end block 16 is pushed by the cushion block 14), while the mounting plate 11 on the other side and the end block 16 are at the maximum distance at this time. By controlling the unlocking of the electromagnetic lock structure 17 on this side, the first spring 13 on this side can be reset (originally pressed by the cushion block 14 and locked by the electromagnetic lock structure 17, and no elastic force is exerted on the end block 16 on this side, that is to say, there is always only the first spring 13 on one side acting), and the cushion block 14 on this side is pushed to move until it contacts the end block 16, so another working station enters the working state.

[0040] Preferably, an electric lock is installed on the limit frame 3 for locking the lifting plate 4. When unloading the lifting plate 4 on one side after palletizing is completed, the lifting plate 4 is locked. At the same time, palletizing can be carried out on the other side, so that the lifting plate 4 on the unloading side will not be pulled upward until the unloading is completed, and the forklift plate is placed on the lifting plate 4 on this side. Unlock the electric lock to start normal operation.

[0041] As Figure 4 、 Figure 10 and Figure 11 shown, preferably, a pressure rod 18 is fixedly connected to one of the end blocks 16, a retardation cylinder 19 is fixedly connected inside the control box 8, a piston plate 20 is slidably connected between the inner walls of the retardation cylinder 19, the piston plate 20 is fixedly connected to the pressure rod 18, and a flow-limiting pipe 21 communicating with the outside is provided on the retardation cylinder 19.

[0042] In the above solution, it is necessary to rely on the deformation of the first spring 13 to make the lifting plate 4 descend according to the number of palletized items. However, the spring itself is unstable, and there will be frequent shaking during the process, which also causes the position of the lifting plate 4 to change frequently during the palletizing process, thus affecting the neatness of the palletizing (on the one hand, it is not easy for the palletizing robot 7 to capture the palletizing position, and on the other hand, the materials will be skewed due to the shaking of the lifting plate 4 during the palletizing process); In this embodiment, a speed-limiting structure composed of a retarder cylinder 19, a piston plate 20, and a flow-limiting pipe 21 is provided to limit the speed of the lifting plate 4 during its movement, making the movement of the lifting plate 4 smoother. At the same time, the three components form a system similar to a damper, thus alleviating the problem of the lifting plate 4 shaking. Specifically, during the movement of the end block 16, the pressure rod 18 and the piston plate 20 are driven to move. During the movement of the piston plate 20, the air pressure inside the retarder cylinder 19 changes (for example, when the piston plate 20 moves towards the opening of the retarder cylinder 19, negative pressure is generated inside the retarder cylinder 19, and vice versa, positive pressure is generated), and correspondingly, air is inhaled from the outside or discharged through the flow-limiting pipe 21. However, due to the limitation of the pipe diameter of the flow-limiting pipe 21, the air passes through at a slow speed, which will limit the movement of the piston plate 20, thereby achieving speed limitation, that is, making the movement of the end block 16, the first sliding rod 12, and the first rack 44 slower and smoother. Further, the rotation of the first gear 9, the traction shaft 5, and the traction sprocket 6 is slower, thus achieving speed limitation for the lifting plate 4. During the above speed-limiting process, the air pressure also limits the shaking frequency of the spring. Affected by the fact that the air pressure cannot change rapidly during the shaking process, the shaking process is suppressed, improving the stability of the palletizing process.

[0043] Embodiment 3 As Figure 6 , Figure 7 and Figure 8 shown, on the basis of Embodiment 2, the present invention provides a technical solution: Preferably, the transfer component includes a transfer frame 22. A regular prism 23 is rotatably connected between the inner sides of the transfer frame 22. One side of the transfer frame 22 is fixedly connected with a transfer motor 25. One end of the central axis of the regular prism 23 extends to the outside of the transfer frame 22 and is fixedly connected with the output end of the transfer motor 25. A partition plate 24 is fixedly connected to each surface of the outer wall of the regular prism 23. A through groove is formed in the middle of the partition plate 24. One side of the partition plate 24 is fixedly connected with a slide rail 27. A slide bar 26 is slidably connected to the outside of the slide rail 27. One side of the slide bar 26 is fixedly connected with an L-shaped plate 28. One end of the inner side of the L-shaped plate 28 is arranged in an arc structure. The L-shaped plate 28 is slidably connected with the through groove. Yielding grooves for the palletizing robot 7 to clamp the valve bags are formed on both sides of the partition plate 24. A counterweight 29 is fixedly connected to the outside of the L-shaped plate 28.

[0044] After the valve bags are produced, they are sent out one by one. During the palletizing process, they are usually stacked in groups of several pieces. In this embodiment, after the valve bags are sent out from the external production equipment (the end is provided with two parallel conveyor belts with a gap in the middle, and the central position at the bottom of the valve bag is hollowed out during the conveying process of the last section), they fall on the partition plate 24 outside the regular prism 23. A counting sensor is installed on the transfer rack 22. After reaching the stacking quantity of each group, the transfer motor 25 is controlled to work, driving the regular prism 23 to rotate until the next partition plate 24 is in the above-mentioned material receiving position, and the above actions are cycled to send out the valve bags in groups of several; during the process of the partition plate 24 rotating 0° to 45° relative to the material receiving position, under the action of gravity, the counterweight 29, the L-shaped plate 28, and the slide bar 26 slide obliquely downward (towards the side close to the regular prism 23). During this process, the stack of valve bags also gradually aligns with the regular prism 23 until both sides of the stack of valve bags come into contact with the regular prism 23 and the inner side of the L-shaped plate 28 at the same time, achieving alignment in one direction, and the inner side of the L-shaped plate 28 is in contact with the front of the valve bag at the same time; when the partition plate 24 rotates in the range of 90° to 180° relative to the material receiving position, since the L-shaped plate 28 is located obliquely below the partition plate 24, at this time, the L-shaped plate 28 provides support, so that the stack of valve bags will not fall until it rotates to 180°, and then waits for the palletizing robot 7 to pick up the material; when it rotates to a position where the partition plate 24 is more than 180° relative to the material receiving position, since the partition plate 24 is obliquely below the regular prism 23, at this time, under the action of gravity, the counterweight 29, the L-shaped plate 28, and the slide bar 26 slide obliquely downward (towards the side away from the regular prism 23), complete the reset, and wait for the next stacking.

[0045] As Figure 6 , Figure 7 and Figure 8 shown, preferably, a gantry 47 is fixedly connected to the upper part of the transfer rack 22. A transmission box 30 is fixedly connected to the top of the gantry 47. A sorting motor 33 is fixedly connected to the outside of the transmission box 30. The output end of the sorting motor 33 extends into the transmission box 30 and is fixedly connected with a third gear 34. Two strip-shaped grooves 31 are symmetrically opened at the top of the gantry 47. A second slide bar 32 is fixedly connected to the inside of each strip-shaped groove 31. A connecting piece 48 is slidably connected to the outer wall of the first slide bar 12. A second rack 36 is slidably connected to the inside of the transmission box 30. One end of the connecting piece 48 is fixedly connected with the second rack 36. The second rack 36 is meshed with the third gear 34. The end of the connecting piece 48 away from the second rack 36 extends outside the transmission box 30 and is fixedly connected with a push plate 35.

[0046] In this embodiment, a structure for aligning the valve bags in the other two directions is provided in the range where the partition plate 24 rotates 45° to 90° relative to the feeding position. By controlling the operation of the material aligning motor 33, the third gear 34 is driven to rotate, thereby driving the two second racks 36 to move closer to the middle. Then, the push plate 35 is driven by the connecting member 48 to move synchronously towards the approaching side until the distance between the approaching sides of the two push plates 35 is the width of the valve bag, realizing the alignment operation of the valve bag. After the alignment is completed, the output shaft of the material aligning motor 33 is reset, causing the push plate 35 to reset, so as not to block the passage when the partition plate 24 flips; the above alignment operation process occurs during the stacking process of the valve bags at the subsequent workstations, so there is no need to wait in the middle, and the work efficiency will not be affected.

[0047] Preferably, the rotation mode of the material aligning motor 33 is to alternate between forward rotation and reverse rotation until the two push plates 35 reach the target position. Its output shaft works in the way of forward rotation by 2°, reverse rotation by 1°, forward rotation by 2°... so that the alignment process of the valve bag is not a rapid push, avoiding the situation of the valve bag having folded edges.

[0048] Such as Figure 6 、 Figure 7 and Figure 8 shown, preferably, two fixed plates 38 are symmetrically and fixedly connected to one side of the gantry 47. A pressing rod 39 is slidably connected through the fixed plate 38. One end of the pressing rod 39 is connected with an arc plate 40 by screws. A limiting block 41 is fixedly connected to the end of the pressing rod 39 far from the arc plate 40. A second spring 42 is sleeved outside the pressing rod 39 between the fixed plate 38 and the arc plate 40. Friction strips 43 are connected to both sides of the partition plate 24 by screws, and the sides of the friction strips 43 close to the arc plate 40 are all set as rough surfaces.

[0049] Since the counterweight 29, the L-shaped plate 28 and the slide bar 26 act by gravity, there is inevitably a situation of jamming. In this embodiment, by providing the friction strip 43 and the arc plate 40, the sides close to each other are both set as rough surfaces, so that when they contact and move relative to each other, jitter is generated, thereby promoting the natural sliding of the counterweight 29, the L-shaped plate 28 and the slide bar 26. At the same time, the jitter can make the valve bag move naturally towards the direction close to the regular prism 23 until it contacts the regular prism 23.

[0050] Such as Figure 6 、 Figure 7 and Figure 8 shown, preferably, a pressure sensor 37 is fixedly installed at the middle position of the side of the gantry 47 close to the fixed plate 38. The pressure sensor 37 and the transfer motor 25 are both electrically connected to an external controller.

[0051] Even if the above auxiliary structure is set to assist the sliding of the counterweight 29, L-shaped plate 28 and slide bar 26, when jamming still occurs, if the work continues, the situation where the L-shaped plate 28 presses against the gantry 47 will be faced, resulting in the breakage of the L-shaped plate 28 or the gantry 47, thus damaging the device; In this embodiment, therefore, a pressure sensor 37 is provided on one side of the gantry 47 close to the fixed plate 38. When the L-shaped plate 28 is not completely "retracted" so that it can contact the gantry 47, as the regular prism 23 rotates, the L-shaped plate 28 will first contact and press the pressure sensor 37. At this time, the pressure sensor 37 collects a pressure signal, and then the transfer motor 25 is controlled by an external controller to reverse appropriately and then continue to rotate forward (assuming the normal working rotation direction is forward rotation, and the opposite direction is reverse rotation) until the pressure sensor 37 no longer collects a signal.

[0052] Embodiment 4 As Figure 1 and Figure 2 As shown, on the basis of Embodiment 3, the present invention provides a technical solution: Preferably, the switching component includes a base 49. The top inside the base 49 is fixedly connected with a switching motor 46. The output end of the switching motor 46 extends above the base 49 and is fixedly connected with a rotating plate 45. The palletizing robot 7 is fixedly installed on one side of the top of the rotating plate 45.

[0053] In this embodiment, by controlling the rotation of the switching motor 46, the rotation amplitude is set to 180° at a time, that is, when the switching motor 46 works and rotates 180°, the rotating plate 45 rotates by the corresponding angle, and the palletizing robot 7 rotates to a position that is centrosymmetric with the original position. The material taking position and the material placing position of the palletizing robot 7 remain unchanged relative to itself. Therefore, there is no need to specifically set the material taking or material placing program. That is, after switching by the switching component, the palletizing robot 7 only needs to follow the original material taking and material placing positions (programs), which simplifies the control process of the palletizing robot 7 (the palletizing position signals at the two workstations are the same).

[0054] As Figure 4 and Figure 11 As shown, preferably, the diameter of the second gear 10 is larger than the diameter of the first gear 9.

[0055] In this embodiment, by setting the diameter of the second gear 10 to be larger than that of the first gear 9, the first gear 9 needs to rotate more turns to drive the second gear 10 to rotate, so that a greater torque and less rotation amount need to be provided, that is, the first gear 9 needs to rotate more turns to drive the second gear 10 to rotate one circle, that is, the moving distance of the first rack 44 relative to the lifting plate 4 is shorter; the setting background is that the normal telescopic range of a general spring has a large gap relative to the stacking height, that is, when directly relying on the deformation of the first spring 13 to feedback the force condition of the lifting plate 4, the deformation amount of the first spring 13 is insufficient (that is, the moving range of the lifting plate 4 is usually large, and the elastic limit of a general spring is difficult to meet the requirements).

[0056] The working principle of the palletizing device for valve bags is specifically described below.

[0057] As Figures 1 - 11 shown, after the production of valve bags is completed, they are sent out piece by piece to the partition plate 24. A counting sensor is installed on the transfer rack 22. After reaching the stacking quantity of each group, the transfer motor 25 is controlled to work, driving the regular prism 23 to rotate to the next partition plate 24 at the above-mentioned material receiving position, and the subsequent actions are cycled to send out the valve bags in groups of multiple; during the process of the partition plate 24 rotating 0° to 45° relative to the material receiving position, under the action of gravity, the counterweight 29, L-shaped plate 28, and slide bar 26 slide obliquely downward (towards the side close to the regular prism 23). During this process, the valve bag stack also gradually moves closer to the regular prism 23 until both sides of the valve bag stack simultaneously contact the regular prism 23 and the inner side of the L-shaped plate 28, achieving alignment in one direction, and the inner side of the L-shaped plate 28 contacts the front of the valve bag simultaneously; In the interval where the partition plate 24 rotates 45° to 90° relative to the material receiving position, there is a structure for aligning the valve bags in the other two directions. By controlling the operation of the material aligning motor 33, the third gear 34 is driven to rotate, thereby driving the two second racks 36 to move closer to the middle. Then, through the connecting member 48, the push plates 35 are driven to move synchronously towards the approaching side until the distance between the approaching sides of the two push plates 35 is the width of the valve bag, achieving the alignment operation of the valve bags. After the alignment is completed, the output shaft of the material aligning motor 33 is reset to make the push plates 35 reset, so as not to block the passage of the partition plate 24 when it flips; When the partition plate 24 rotates in the interval of 90° to 180° relative to the material receiving position, since the L-shaped plate 28 is located obliquely below the partition plate 24, at this time, the L-shaped plate 28 provides support, so that the valve bag stack will not fall until it rotates to 180°. Then, the palletizing robot 7 is used to pick up the materials and stack them on the forklift board. After the partition plate 24 rotates more than 180° relative to the material receiving position, since the partition plate 24 is obliquely below the regular prism 23, at this time, under the action of gravity, the counterweight 29, L-shaped plate 28, and slide bar 26 slide obliquely downward (away from the side of the regular prism 23), completing the reset and waiting for the next stacking; The stacked valve bags are clamped by the palletizing robot 7 from the position of the give way slot and then stacked on the forklift plate on the lifting plate 4. As the mass of the objects on the forklift plate increases during the palletizing process, they move downward with the change in gravity, that is, the change in gravity is used as a signal for the lifting plate 4 on the palletized station to descend to drive it to descend to a corresponding height. At the same time, the lifting plate 4 on another station (non-palletizing station) is raised to a corresponding height (connected by the same chain), so that when the lifting plate 4 on the palletized station descends to the lowest position, the lifting plate 4 on the other station rises to the highest height. The lifting plate 4 at the lowest position waits for the forklift to transport the materials away, while the lifting plate at the highest position waits for the palletizing robot 7 to switch stations and continue palletizing.

[0058] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A palletizing device for valve bag production, comprising a support frame (1), a limiting component and a palletizing robot (7), wherein the palletizing robot (7) is fixedly mounted on the top of the support frame (1), and the limiting component is used to prevent the palletizing from being skewed; characterized in that: The limiting component is provided with two palletizing stations, and further comprises: A transfer component is arranged at the output end of the external valve bag production equipment and is used to stack and align multiple valve bags; A switching component, mounted on the bottom of the palletizing robot (7), and used to switch the palletizing station corresponding to the palletizing robot (7); The limiting component comprises a lifting frame (2), a limiting frame (3) and a lifting plate (4), wherein two limiting frames (3) and two lifting plates (4) are each provided with a notch on both sides of the limiting frame (3), the limiting frame (3) is fixedly connected to the upper part of the inner side of the lifting frame (2), the inner side of the lifting frame (2) is symmetrically provided with two groups of vertical slide rails (27), and the two lifting plates (4) are respectively slidably connected to the two groups of slide rails (27); the lifting frame (2) is rotatably connected to two traction shafts (5) at a position between two workstations, the outsides of the traction shafts (5) are fixedly connected to traction sprockets (6), the traction sprockets (6) are connected to each other through a chain transmission, and the two sides of the chain are respectively fixedly connected to the two lifting plates (4); one side of the lifting frame (2) is fixedly connected to a control box (8), and a control component is provided inside the control box (8), and the control component is used to control the descending position of the lifting plate (4) according to the number of valve bags to be stacked.

2. A palletizing device for valve bag production according to claim 1, characterized in that: The control assembly comprises a mounting plate (11) fixedly connected to the inner wall of the control box (8), a first slide bar (12) passing through the mounting plate (11) and slidably connected thereto, both ends of the first slide bar (12) being fixedly connected to end blocks (16), a first spring (13) being sleeved on the outside of the first slide bar (12) and on both sides of the mounting plate (11), a first rack (44) being fixedly connected between the adjacent sides of the two end blocks (16), one end of the traction shaft (5) extending into the interior of the control box (8) and being fixedly connected to the first gear (9), A second gear (10) is rotatably connected to one side of the inner wall of the control box (8), and the second gear (10) is meshed with the first gear (9) and meshed with the first rack (44); two cushion blocks (14) are slidably connected to the outside of the first slide bar (12), and two electromagnetic lock structures (17) are fixedly installed inside the control box (8), and lock holes (15) corresponding to and used in conjunction with the two electromagnetic lock structures (17) are provided on the two cushion blocks (14), and an electric lock for locking the lifting plate (4) is installed on the limit frame (3).

3. A palletizing device for valve bag production according to claim 2, characterized in that: A pressure rod (18) is fixedly connected to one of the end blocks (16), a retarder (19) is fixedly connected to the interior of the control box (8), a piston plate (20) is slidably connected between the inner walls of the retarder (19), the piston plate (20) is fixedly connected to the pressure rod (18), and a flow limiting tube (21) communicating with the outside is provided on the retarder (19).

4. A palletizing device for valve bag production according to claim 3, characterized in that: The transfer component comprises a transfer frame (22), a regular prism (23) is rotatably connected to the inner side of the transfer frame (22), a transfer motor (25) is fixedly connected to one side of the transfer frame (22), one end of the central axis of the regular prism (23) extends to the outside of the transfer frame (22) and is fixedly connected to the output end of the transfer motor (25), and a partition plate (24) is fixedly connected to each surface of the outer wall of the regular prism (23), a through groove is opened in the middle of the partition plate (24), and the partition plate (24) is fixedly connected to the outer wall of the regular prism (23). A slide rail (27) is fixedly connected to one side of the partition plate (24), a slide bar (26) is slidably connected to the outside of the slide rail (27), an L-shaped plate (28) is fixedly connected to one side of the slide bar (26), one end of the inner side of the L-shaped plate (28) is arranged as an arc structure, and the L-shaped plate (28) is slidably connected to the through groove; both sides of the partition plate (24) are provided with clearance grooves for the palletizing robot (7) to clamp the valve bag, and a counterweight block (29) is fixedly connected to the outside of the L-shaped plate (28).

5. A palletizing device for valve bag production according to claim 4, characterized in that: The upper part of the transfer frame (22) is fixedly connected to a gantry (47), the top of the gantry (47) is fixedly connected to a transmission box (30), the outer side of the transmission box (30) is fixedly connected to a material-forming motor (33), the output end of the material-forming motor (33) extends to the inside of the transmission box (30) and is fixedly connected to a third gear (34), the top of the gantry (47) is symmetrically provided with two strip grooves (31), the inside of each of the strip grooves (31) is fixedly connected to a second slide bar (32), the outer wall of the first slide bar (12) is slidably connected to a connecting piece (48), the inside of the transmission box (30) is slidably connected to a second rack (36), one end of the connecting piece (48) is fixedly connected to the second rack (36), the second rack (36) is meshingly connected to the third gear (34), and one end of the connecting piece (48) away from the second rack (36) extends to the outside of the transmission box (30) and is fixedly connected to a push plate (35).

6. A palletizing device for valve bag production according to claim 5, characterized in that: One side of the gantry (47) is symmetrically fixedly connected to two fixing plates (38), a clamping rod (39) is slidably connected to the fixing plate (38), one end of the clamping rod (39) is connected to the arc plate (40) by screws, one end of the clamping rod (39) away from the arc plate (40) is fixedly connected to a limit block (41), the outside of the clamping rod (39) is sleeved with a second spring (42) located between the fixing plate (38) and the arc plate (40), and both sides of the partition plate (24) are connected to friction strips (43) by screws, and the side of the friction strip (43) close to the arc plate (40) is set as a rough surface.

7. A palletizing device for valve bag production according to claim 6, characterized in that: A pressure sensor (37) is fixedly mounted at a middle position of the gantry (47) near one side of the fixed plate (38), and the pressure sensor (37) and the transport motor (25) are both electrically connected to an external controller.

8. A palletizing device for valve bag production according to claim 7, characterized in that: The switching component comprises a base (49), a switching motor (46) is fixedly connected to the top of the inner side of the base (49), an output end of the switching motor (46) extends to the top of the base (49) and is fixedly connected to a rotating plate (45), and the palletizing robot (7) is fixedly mounted on one side of the top of the rotating plate (45).

9. A palletizing device for valve bag production according to claim 8, characterized in that: The diameter of the second gear (10) is greater than the diameter of the first gear (9).

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