Folding stacking machine for core bodies of hygienic products

Abstract

The utility model discloses a folding and stacking machine for core bodies of hygienic products, which belongs to the technical field of folding and stacking equipment for core bodies of hygienic products and comprises a folding and stacking mechanism, a movable frame and a fixed frame, the folding and stacking mechanism comprises a rack, a first motor is arranged on one side of the rack, and a second motor is arranged on the other side of the rack. A folding and stacking swing arm movably connected with the rack is arranged at the driving end of the first motor; the folding and stacking mechanism is erected in the movable frame through the rack, a plurality of lifting pulleys are arranged on the outer side of the movable frame, the fixed frame sleeves the outer side of the movable frame, and the surfaces of the lifting pulleys abut against the inner wall of the fixed frame; a second motor is arranged at the top of the fixed frame, and a lifting transmission mechanism enabling the movable frame to reciprocate in the vertical direction is arranged between the output end of the second motor and the movable frame; according to the utility model, the stability of the core material in the folding and stacking process can be improved, so that the core material is tidily stacked on the surface of the material tray.

Description

Technical Field

[0001] This utility model relates to the technical field of folding and stacking equipment for sanitary product cores, and specifically to a folding and stacking machine for sanitary product cores. Background Technology

[0002] Hygiene product cores are typically wound into rolls. The slit cores are wound onto a winding shaft to form a roll of core material. However, this method has a drawback: the length of a single roll of core material is limited. During subsequent processes, the short length of the rolled core material necessitates frequent replacement, increasing material waste and reducing processing efficiency. Currently, some core materials are folded and stacked onto pallets using a swing arm that continuously reciprocates. This allows for longer core materials to be accommodated on the pallet, reducing material waste and improving processing efficiency. However, the swing arm generates significant inertial force during continuous reciprocating motion. The structure fixing the swing arm is prone to wobbling during folding and stacking, resulting in uneven placement of core material on the pallet and large gaps between layers, thus reducing the length of core material that can be placed on a single pallet.

[0003] Based on the above, Chinese Patent No. CN214609661U discloses a core stacking storage device for the hygiene products industry, including a palletizer and a core conveyor. The core conveyor can transport cores to the palletizer. The palletizer includes a frame with a longitudinal slide rail on it. The frame also has a lifting frame with a sliding block that is movably inserted into the longitudinal slide rail. The frame has a first lifting component that can drive the lifting frame to move up and down. The lifting frame also has a transverse track with a movable frame that is movably inserted into the transverse track. The movable frame has a swing arm assembly, and the lifting frame has a moving component that can drive the movable frame to move along the transverse track.

[0004] The device disclosed in the aforementioned patent stores and packages the core material of sanitary products by folding and stacking. The frame of the device moves up and down through two first lifting components on both sides. The frame has only two support points during the up and down movement. The swing arm component is prone to causing the frame to shake during the swinging process, resulting in the core material after folding and stacking being uneven. Therefore, there is still room for improvement in this device. Utility Model Content

[0005] To address the technical deficiencies in the background art, this utility model proposes a folding and stacking machine for the core of hygiene products, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0006] A folding and stacking machine for the core of a hygiene product includes a folding and stacking mechanism, a movable frame, and a fixed frame. The folding and stacking mechanism includes the following structure: a frame, a first motor on one side of the frame, and a folding and stacking swing arm that is movably connected to the frame at the drive end of the first motor.

[0007] The folding and stacking mechanism is mounted inside the movable frame via a frame. Several lifting pulleys are provided on the outside of the movable frame. The fixed frame is sleeved on the outside of the movable frame, and the surface of the lifting pulleys abuts against the inner wall of the fixed frame.

[0008] The fixed frame is equipped with a second motor at its top, and a lifting transmission mechanism is provided between the output end of the second motor and the movable frame to make the movable frame reciprocate in the vertical direction.

[0009] As a further technical solution of this utility model, the movable frame is provided with a number of vertically extending movable columns, and each movable column is provided with at least two vertically distributed lifting pulleys on its side.

[0010] As a further technical solution of this utility model, the fixed frame is provided with a plurality of vertically extending fixed columns that match the movable columns, and the inner side of the fixed columns is provided with a lifting rail that matches the lifting pulley.

[0011] As a further technical solution of this utility model, the lifting transmission mechanism includes the following structure: a drive sprocket fixedly connected to the drive end of the second motor, and a driven sprocket movably connected to one side of the bottom of the fixed frame. The drive sprocket and the driven sprocket are jointly fitted with a lifting chain that is connected end to end, and one side of the lifting chain is fixedly connected to the fixed frame.

[0012] As a further technical solution of this utility model, both sides of the frame are provided with transverse pulleys, and the top of the movable frame is provided with a transverse slide rail that matches the transverse pulleys.

[0013] As a further technical solution of this utility model, a third motor is provided on one side of the frame, and a transverse drive wheel is provided at the drive end of the third motor. A transverse rack matching the transverse drive wheel is provided on one side of the movable frame, and the surface of the transverse drive wheel is provided with gear teeth that mesh with the transverse rack.

[0014] As a further technical solution of this utility model, a limit sensing element is provided at one end of the transverse rack.

[0015] As a further technical solution of this utility model, the top of the folding stacking mechanism is provided with several material inlet rollers.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention is used for folding and stacking the core material of sanitary products. During the folding and stacking process, a second motor gradually moves the folding and stacking mechanism upward through a lifting transmission mechanism. This can control the distance between the bottom of the folding and stacking swing arm and the upper surface of the core material stack to a low range. Furthermore, the movable frame slides along the inner side of the fixed frame through the outer lifting pulley, which improves the stability of the upward movement of the folding and stacking structure and helps to improve the speed and efficiency of folding and stacking. This allows the core material to be neatly stacked on the surface of the material tray, reducing the gaps inside the core material stack and thus increasing the length of the core material in the stack. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a folding and stacking machine for the core of a hygiene product.

[0019] Figure 2 This is a structural diagram of a folding and stacking machine for the core of a hygiene product, taken from another angle.

[0020] Figure 3 yes Figure 1 A partial schematic diagram of point A in the middle.

[0021] Figure 4 yes Figure 2 A partial schematic diagram at point B in the middle.

[0022] Figure 5 yes Figure 1 A partial schematic diagram at point C.

[0023] Among them: 1-Folding stacking mechanism, 11-Frame, 12-First motor, 13-Folding stacking swing arm, 14-Transverse pulley, 15-Third motor, 16-Transverse drive wheel, 17-Introduction roller, 2-Movable frame, 21-Lifting pulley, 22-Movable column, 23-Transverse slide rail, 24-Transverse rack, 25-Limit sensing element, 3-Fixed frame, 31-Fixed column, 32-Lifting slide rail, 33-Material pallet, 4-Second motor, 5-Lifting transmission mechanism, 51-Drive sprocket, 52-Driven sprocket, 53-Lifting chain. Detailed Implementation

[0024] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0025] like Figure 1-4As shown, a folding and stacking machine for sanitary product cores includes a folding and stacking mechanism 1, a movable frame 2, and a fixed frame 3. The folding and stacking mechanism 1 includes the following structure: a frame 11, a first motor 12 on one side of the frame 11, and a folding and stacking swing arm 13 movably connected to the frame 11 at the drive end of the first motor 12; the folding and stacking mechanism 1 is mounted inside the movable frame 2 via the frame 11, and a plurality of lifting pulleys 21 are provided on the outside of the movable frame 2; the fixed frame 3 is sleeved on the outside of the movable frame 2, and the surface of the lifting pulleys 21 abuts against the inner wall of the fixed frame 3; a second motor 4 is provided at the top of the fixed frame 3, and a lifting transmission mechanism 5 is provided between the output end of the second motor 4 and the movable frame 2 to cause the movable frame 2 to reciprocate in the vertical direction.

[0026] This utility model is used to fold and stack the core material of sanitary products. The bottom inner side of the fixed frame 3 is provided with a material tray 33 to accommodate the folded and stacked core material. The folding and stacking mechanism 1 and the movable frame 2 are both located directly above the material tray 33. After the non-woven fabric and absorbent resin are combined to obtain the core material, it is transported to the folding and stacking mechanism 1. The working principle of the folding and stacking mechanism 1 is the same as that of the applicant's previous Chinese patent application for a folding and stacking machine swing arm mechanism (publication number: CN108190477B). The folding and stacking mechanism 1 drives the folding and stacking swing arm 13 to swing through the first motor 12 to fold and stack the core material on the surface of the material tray 33.

[0027] During the folding and stacking process of the core material, in the initial stage, the bottom of the folding and stacking arm 13 is close to the upper surface of the material tray 33. As the process progresses, the second motor 4 causes the folding and stacking mechanism 1 and the movable frame 2 to gradually move upward through the lifting transmission mechanism 5, thereby forming a core material pile with a certain height on the upper surface of the material tray 33. Since the height of the bottom of the folding and stacking arm 13 increases synchronously with the height of the core material pile, the core material falling from the folding and stacking arm 13 falls at a lower height, which allows the core material to be stacked more accurately to the designated position. In addition, during the upward movement of the folding and stacking mechanism 1 and the movable frame 2, the movable frame 2 rolls along the inner wall of the fixed frame 3 through the outer lifting pulley 21, which can improve the stability of the movable frame 2 and the folding and stacking mechanism 1 during the movement, thereby making the core material neatly stacked on the upper surface of the material tray 33.

[0028] With the above structure, it should be further explained that the movable frame 2 is provided with several vertically extending movable columns 22. Preferably, there are four movable columns 22, which are evenly distributed at the four corners of the edge of the movable frame 2, so that the movable frame 2 is cubic or cuboid in shape. Each movable column 22 is provided with at least two vertically distributed lifting pulleys 21 on its side. Each movable column 22 is preferably provided with two vertically distributed lifting pulleys 21 on its side. A total of eight lifting pulleys 21 are provided on the outside of the movable frame 2. During the upward movement of the folding and stacking mechanism 1 and the movable frame 2, the movable frame 2 rolls on the inner wall of the fixed frame 3 through the eight lifting pulleys 21, which can effectively prevent the movable frame 2 from tilting to any side, thereby further improving the stability of the movable frame 2 and the folding and stacking mechanism 1 during the movement, and further ensuring that the core material is neatly stacked on the upper surface of the material tray 33.

[0029] Furthermore, the fixed frame 3 is provided with several vertically extending fixed columns 31 that match the movable columns 22. Preferably, there are four fixed columns 31 that are evenly distributed at the four corners of the edge of the fixed frame 3, so that the fixed frame 3 has a cube or cuboid shape. The inner side of the fixed columns 31 is provided with a lifting rail 32 that matches the lifting pulley 21. The surface of the lifting pulley 21 is provided with a groove that matches the lifting rail 32. The lifting pulley 21 is mounted on the surface of the opposite lifting rail 32 through the groove. This structure can make the lifting pulley 21 roll stably along the lifting rail 32 and improve the stability of the lifting pulley 21 during the rolling process, thereby preventing the lifting pulley 21 from detaching from the lifting rail 32 and causing the movable frame 2 to swing. This improves the stability of the movable frame 2 and the folding and stacking mechanism 1 during the movement process, so that the core material is neatly stacked on the upper surface of the material tray 33.

[0030] During the folding and stacking process of the core material, the folding and stacking mechanism 1 has a large inertia along the swing direction. Current folding and stacking equipment usually fixes the folding and stacking mechanism 1 with an inverted T-shaped frame. The swing inertia of the folding and stacking mechanism 1 can easily cause the equipment to shake, resulting in a low swing speed of the folding and stacking structure 1. The maximum folding and stacking speed of the folding and stacking equipment for the core material is 200m / min. In this utility model, the folding and stacking mechanism 1 is mounted on the movable frame 2 by the frame 11, and the fixed frame 3 encloses the movable frame 2 inside. Both the fixed frame 3 and the movable frame 2 are cubic or cuboid in shape, which makes the folding and stacking mechanism 1 more stable in the horizontal direction. This better avoids the equipment from shaking due to the inertia generated when the folding and stacking mechanism 1 swings. As a result, the folding and stacking machine of this utility model can reach a folding and stacking speed of 350m / min for the core material, thereby improving the working efficiency of the folding and stacking machine.

[0031] like Figure 1 , 2As shown in Figure 4, in one of the preferred embodiments of this utility model, the lifting transmission mechanism 5 includes the following structure: a drive sprocket 51 fixedly connected to the drive end of the second motor 4, and a driven sprocket 52 movably connected to one side of the bottom of the fixed frame 3. The drive sprocket 51 is located directly above the driven sprocket 52. The drive sprocket 51 and the driven sprocket 52 are fitted together with a lifting chain 53 connected end to end. One side of the lifting chain 53 is fixedly connected to the fixed frame 3. The drive end of the second motor 4 is provided with a shaft fixed to the drive sprocket 51. When the second motor 4 is working, the drive sprocket 51 is rotated through the transmission of the shaft, thereby driving the lifting chain 53 to rotate outside the drive sprocket 51 and the driven sprocket 52, thereby driving the movable frame 2 to reciprocate in the vertical direction. The lifting transmission mechanism 5 of this utility model realizes mechanical transmission through the drive sprocket 51 and the lifting chain 53 based on chain transmission. There will be no slippage between the drive sprocket 51 and the lifting chain 53, which can improve the transmission accuracy and efficiency.

[0032] With the above structure, it should be further explained that the lifting transmission mechanism 5 is provided with four drive sprockets 51 and four lifting chains 53. Each lifting chain 53 is fixedly connected to a movable column 22. The movable frame 2 is provided with driven sprockets 52 directly above and below the movable column 22 on the side away from the second motor 4, which are movably connected to the fixed frame 3. This allows the lifting chains 53 fixed to the movable column 22 to be wound around the outside of the multiple driven sprockets 52 and drive sprockets 51 to achieve end-to-end connection. With this structure, the second motor 4 causes the four lifting chains 53 to move the movable frame 2 back and forth in the vertical direction simultaneously through the four drive sprockets 51. The movable frame 2 has four force points distributed at the four corners during the movement, which can improve the stability of the movable frame 2 and the folding and stacking mechanism 1 during the movement, so that the core material is neatly stacked on the upper surface of the material tray 33.

[0033] Furthermore, in current folding and stacking equipment, the drive and transmission structures that drive the folding and stacking mechanism 1 to lift and lower are mostly located at the bottom of the equipment. This results in a relatively high top position of the base where the material pallet 33 is placed inside the equipment. The base needs to be equipped with a ramp to facilitate the operation of forklifts to transfer materials from the material pallet 33. However, the high base leads to a large slope of the ramp, making it difficult for forklifts to move to the top of the base via the ramp. In this invention, the second motor 4 and the lifting transmission mechanism 5 used to drive the folding and stacking mechanism 1 to lift and lower are respectively located at the top and side of the folding and stacking machine. This eliminates the need to occupy the bottom space of the folding and stacking machine, reducing the height of the base. Only a ramp with a lower slope is needed, allowing operators to more easily move the forklift to the material pallet 3 to transfer materials.

[0034] like Figure 1 , 2As shown in Figure 5, in one of the preferred embodiments of this utility model, both sides of the frame 11 are provided with transverse pulleys 14, and the top of the movable frame 2 is provided with a transverse slide rail 23 that matches the transverse pulleys 14. The rolling direction of the transverse pulleys 14 is perpendicular to the swing direction of the folding and stacking swing arm 13. The folding and stacking mechanism 1 can roll along the transverse slide rail 23 through the transverse pulleys 14 to increase the area of ​​the core material folding and stacking, so that the core material stack of the same height has a longer core material, reducing the loss of core material in subsequent processes and improving processing efficiency.

[0035] With the above structure, it should be further explained that a third motor 15 is provided on one side of the frame 11, and a transverse drive wheel 16 is provided at the drive end of the third motor 15. A transverse rack 24 matching the transverse drive wheel 16 is provided on one side of the movable frame 2. The transverse rack 24 extends in the same direction as the transverse slide rail 23. The surface of the transverse drive wheel 16 is provided with gear teeth that mesh with the transverse rack 24. When the third motor 15 is working, it drives the transverse drive wheel 16 to rotate through the shaft at the drive end and meshes with the transverse rack 24, so that the folding and stacking mechanism 1 moves along the extension direction of the transverse rack 24, thereby increasing the folding and stacking area of ​​the core material and increasing the length of the core material in the core material stack.

[0036] like Figure 1 As shown, in one of the preferred embodiments of this utility model, a limit sensing element 25 is provided at one end of the transverse rack 24. The limit sensing element 25 is preferably a guide rail block. When the folding and stacking mechanism 1 moves to the end along the transverse rack 24, the frame 11 will strike the limit sensing element 25 and trigger the signal feedback mechanism to notify the servo system or control system that the folding and stacking mechanism 1 has reached the preset limit position and needs to be controlled to move in the opposite direction, so that the folding and stacking mechanism 1 folds and stacks the core material through reciprocating motion.

[0037] Furthermore, limit sensing elements 25 can also be set at the top and bottom of the lifting slide rail 32. The limit sensing elements 25 can sense the impact of the movable frame 2, thereby limiting the highest and lowest positions of the folding and stacking mechanism 1.

[0038] like Figure 1 , 2 As shown, in one of the preferred embodiments of this utility model, the top of the folding stacking mechanism 1 is provided with a plurality of material inlet rollers 17. The material inlet rollers 17 are used to guide the core material to the inlet of the folding stacking swing arm 13. The plurality of material inlet rollers 17 extend in different directions. By gradually changing the conveying angle of the core material, the material inlet rollers 17 make the conveying angle of the core material match the inlet of the folding stacking swing arm 13, which can avoid the phenomenon of the core material getting entangled during the conveying process.

[0039] In summary, this utility model is used for folding and stacking the core material of sanitary products. During the folding and stacking process, the second motor 4 causes the folding and stacking mechanism 1 to gradually move upward through the lifting transmission mechanism 5. This can control the distance between the bottom of the folding and stacking swing arm 13 and the upper surface of the core material stack to be within a low range. Furthermore, the movable frame 2 improves the stability of the upward movement of the folding and stacking mechanism 1 by sliding along the inner side of the fixed frame 3 through the outer lifting pulley 21. This ensures that the core material is neatly stacked on the surface of the material tray 33, reducing the gaps inside the core material stack and thus increasing the length of the core material in the stack.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A folding and stacking machine for sanitary product cores, comprising a folding and stacking mechanism (1), a movable frame (2), and a fixed frame (3), characterized in that, The folding stacking mechanism (1) includes the following structure: a frame (11), a first motor (12) on one side of the frame (11), and a folding stacking swing arm (13) that is movably connected to the frame (11) at the drive end of the first motor (12). The folding and stacking mechanism (1) is mounted inside the movable frame (2) via a frame (11). The movable frame (2) is provided with several lifting pulleys (21) on its outer side. The fixed frame (3) is fitted on the outer side of the movable frame (2). The surface of the lifting pulleys (21) abuts against the inner wall of the fixed frame (3). The fixed frame (3) is provided with a second motor (4) at the top, and a lifting transmission mechanism (5) is provided between the output end of the second motor (4) and the movable frame (2) to make the movable frame (2) reciprocate in the vertical direction.

2. The folding and stacking machine for sanitary product cores according to claim 1, characterized in that, The movable frame (2) is provided with a number of vertically extending movable columns (22), and each movable column (22) is provided with at least two vertically distributed lifting pulleys (21) on its side.

3. The folding and stacking machine for sanitary product cores according to claim 2, characterized in that, The fixed frame (3) is provided with a number of vertically extending fixed columns (31) that match the movable columns (22), and the inner side of the fixed columns (31) is provided with lifting rails (32) that match the lifting pulleys (21).

4. The folding and stacking machine for sanitary product cores according to claim 1, characterized in that, The lifting transmission mechanism (5) includes the following structure: a drive sprocket (51) fixedly connected to the drive end of the second motor (4), and a driven sprocket (52) movably connected to one side of the bottom of the fixed frame (3). The drive sprocket (51) and the driven sprocket (52) are fitted together with a lifting chain (53) connected end to end. One side of the lifting chain (53) is fixedly connected to the fixed frame (3).

5. The folding and stacking machine for sanitary product cores according to claim 1, characterized in that, The frame (11) is provided with transverse pulleys (14) on both sides, and the top of the movable frame (2) is provided with a transverse slide rail (23) that matches the transverse pulleys (14).

6. The folding and stacking machine for sanitary product cores according to claim 1, characterized in that, A third motor (15) is provided on one side of the frame (11), and a transverse drive wheel (16) is provided at the drive end of the third motor (15). A transverse rack (24) matching the transverse drive wheel (16) is provided on one side of the movable frame (2), and the surface of the transverse drive wheel (16) is provided with teeth that mesh with the transverse rack (24).

7. The folding and stacking machine for sanitary product cores according to claim 6, characterized in that, One end of the transverse rack (24) is provided with a limit sensing element (25).

8. The folding and stacking machine for sanitary product cores according to claim 1, characterized in that, The top of the folding stacking mechanism (1) is provided with several material feeding rollers (17).

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