Turnover mechanism for turning over whole stack of tissues

Abstract

The utility model discloses an overturning mechanism for overturning a whole stack of tissues. Comprising a base, an overturning main plate, a pushing air cylinder, a first belt wheel set and a second belt wheel set, wherein the overturning main plate is arranged on the base in an overturning manner; the pushing air cylinder is used for pushing the overturning main plate to overturn; the first belt wheel set is fixed on the overturning main plate; an air cylinder body of the pushing air cylinder is movably connected with the base, a first belt pulley set and a second belt pulley set which are used for conveying the tissues are matched to clamp the whole stack of tissues, and the pushing air cylinder pushes the overturning main plate to overturn so that the whole stack of tissues can be overturned up and down. Different from the characteristic that tissue overturning action of an existing folding machine depends on cooperation of a motor and a belt for overturning, a novel alternative layout mode is provided for connection of a discharging conveying mechanism of the folding machine and downstream equipment, and the tissue overturning mechanism is reasonable and simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of paper towel folding machines, and more specifically, it refers to a turning mechanism for turning a stack of paper towels. Background Art

[0002] Folding machines for producing folded paper towels all have a discharge conveying mechanism, and the discharge conveying mechanism sends out the folded and stacked paper towels from the folding machine. During the process of the discharge conveying mechanism transporting the paper towels, it is often necessary to turn the stack of paper towels up and down and then send them to downstream equipment to meet the packaging requirements. In the existing folding machines, the rotation axis of the paper towel turning action is perpendicular to the traveling route of the paper towels transported by the discharge conveying mechanism, resulting in a single connection layout method between the discharge conveying mechanism of the folding machine and the downstream equipment, and there are no more alternative connection layout methods. To solve the above problems, a Chinese patent proposed a paper towel folding machine (2022221397800), which includes a discharge conveying mechanism. The discharge conveying mechanism has two parallel and vertically opposed conveyor chains, and the lower conveyor chain supports the paper towels. The two conveyor chains are connected to the turning mechanism. Whenever a stack of paper towels has been supported by the lower conveyor chain, the two conveyor chains clamp the stack of paper towels together and perform a turning action of swapping positions up and down under the drive of the turning mechanism. The rotation axis of the turning action is parallel to the traveling route of the conveyor chains transporting the paper towels. The connection between the discharge conveying mechanism of the folding machine and the downstream equipment provides a new alternative layout method. When the technical solution provided by the above Chinese patent is specifically used, there are the following problems: it uses a form of a motor and a belt to drive a turntable to rotate to complete the turning action. The belt drive has the disadvantages of low transmission efficiency and inability to maintain an accurate transmission ratio, and it also requires more calibration time and higher maintenance costs. Summary of the Utility Model

[0003] The technical solution adopted by the utility model is as follows:

[0004] A turning mechanism for turning a stack of paper towels includes a base, a turning main board rotatably installed on the base, a pushing air cylinder for pushing the turning main board to turn, a first pulley group fixed on the turning main board, and a second pulley group movably installed on the turning main board and cooperating with the first pulley group to clamp the stack of paper towels. The cylinder body of the pushing air cylinder is movably connected to the base, the piston rod of the pushing air cylinder is movably connected to the back of the turning main board, and a cylinder for pushing the first pulley group to move is arranged on the back of the turning main board.

[0005] A row of front columns and a row of rear columns are arranged on the base. Two bearing seats are arranged on the front columns, and the front end of the turning main board is connected between the two bearing seats through a rotating shaft.

[0006] The first pulley group includes a first belt groove plate fixed on the flipping main board, a number of first pulleys rotatably installed between the flipping main board and the first belt groove plate, a first belt wound around the first pulleys, and a first belt main shaft rotatably installed on the flipping main board for driving the rotation of the first belt.

[0007] A number of guiding notches are provided on the flipping main board. The second pulley group includes a second belt groove plate located on the front side of the flipping main board, a moving plate located on the rear side of the flipping main board, a number of second pulleys connected between the second belt groove plate and the moving plate, a second belt wound around the number of second pulleys, and a second belt main shaft for driving the operation of the second belt. Each second pulley passes through the guiding notch and is connected to the moving plate. The air cylinder is fixed on the flipping main board and its cylinder shaft is connected to the moving plate.

[0008] A number of retaining bars are provided on the flipping main board.

[0009] The beneficial effects of the present utility model are as follows: The first pulley group for transporting paper towels and the second pulley group cooperate to clamp the whole stack of paper towels, and the flipping main board is pushed and flipped by the pushing air cylinder to complete the up-and-down flipping action of the whole stack of paper towels. Different from the paper towel flipping action of the existing folding machine, which relies on the cooperation of a motor and a belt for flipping, it provides a new alternative layout method for the connection between the discharging and conveying mechanism of the folding machine and the downstream equipment, and has a reasonable structure, is simple in structure, and has a low manufacturing cost. Description of the Drawings

[0010] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0011] Figure 2 It is a three-dimensional schematic diagram of another angle of the present utility model.

[0012] Figure 3 It is a three-dimensional schematic diagram of another angle of the present utility model. Detailed Embodiments

[0013] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0014] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0016] The utility model provides a turning mechanism for turning a stack of paper towels, which includes a base 10, a turning main board 20 that is turnably installed on the base 10, a pushing air cylinder 30 for pushing the turning main board 20 to turn, a first pulley group 40 fixed on the turning main board 10, and a second pulley group 50 that is movably installed on the turning main board 10 and cooperates with the first pulley group 40 to clamp a stack of paper towels. The cylinder body of the pushing air cylinder 30 is movably connected to the base 10, and the piston rod of the pushing air cylinder 30 is movably connected to the back surface of the turning main board 20. A cylinder 60 for pushing the first pulley group 40 to move is arranged on the back surface of the turning main board 20. When a stack of paper towels coming out of the folding machine enters between the first pulley group 40 and the second pulley group 50, the first pulley group 40 is pushed by the cylinder 60 to move towards the second pulley group 50 to clamp the stack of paper towels. Then, the turning main board 20 is turned by the cylinder 60, and the turned stack is conveyed to the next process through the rotation of the first pulley group and the second pulley group.

[0017] In this embodiment, a row of front columns 11 and a row of rear columns 12 are arranged on the base 10. Two bearing seats 13 are arranged on the front columns 11. The front end of the turning main board 20 is connected between the two bearing seats 13 through a rotating shaft A. The rear end of the turning main board 20 can contact the rear columns 12, and the rear columns limit or support the turning main board 20. The rear side surface of the front end of the turning main board 20 can contact the side surface of the bearing seat 13 to achieve the limiting effect.

[0018] In this embodiment, the first pulley group 40 includes a first pulley groove plate 41 fixed on the flipping main board 20, a plurality of first pulleys 42 rotatably installed between the flipping main board 20 and the first pulley groove plate 41, a first belt (not shown in the figure) wound around the first pulleys 42, and a first belt main shaft 43 rotatably installed on the flipping main board 20 for driving the first belt to rotate. During specific use, the first belt main shaft 43 is in transmission connection with a motor to drive the first belt to operate, so as to achieve the purpose of conveying a whole stack of paper towels.

[0019] In this embodiment, a plurality of guiding notches 21 are provided on the flipping main board 20. The second pulley group 50 includes a second pulley groove plate 51 located on the front side surface of the flipping main board 20, a moving plate 52 located on the rear side surface of the flipping main board 20, a plurality of second pulleys 53 connected between the second pulley groove plate 51 and the moving plate 52, a second belt (not shown in the figure) wound around the plurality of second pulleys 53, and a second belt main shaft 54 for driving the second belt to operate. Each second pulley 53 passes through the guiding notch 21 and is connected to the moving plate 52. The air cylinder 60 is fixed on the flipping main board 20 and its cylinder shaft is connected to the moving plate 52, so that by pushing the moving plate 52, the whole second pulley group 50 can be driven to move.

[0020] In this embodiment, in order to prevent the whole stack of paper towels from falling, a plurality of retaining bars 22 are provided on the flipping main board 20 to prevent the problem that the whole stack of paper towels falls when the first pulley group 40 and the second pulley group 50 fail to clamp the whole stack of paper towels in cooperation.

[0021] In this embodiment, a sheet metal frame 14 is provided on the base 10, and an acrylic plate 141 is provided on the sheet metal frame 14 for users to observe the flipping state, and it also has the function of protection to prevent accidental injury to operators.

[0022] What the present utility model aims to achieve is that the first pulley group for transporting paper towels and the second pulley group cooperate to clamp the whole stack of paper towels, and the flipping main board is pushed to flip by pushing the air cylinder to complete the up-and-down flipping action of the whole stack of paper towels. Different from the existing paper towel flipping action of the folding machine which relies on the cooperation of the motor and the belt for flipping, it provides a new alternative layout method for the connection between the discharging and conveying mechanism of the folding machine and the downstream equipment, and has a reasonable structure, is simple in structure and low in manufacturing cost.

[0023] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A turning mechanism for turning over a whole stack of paper towels, characterized in that: It includes a base, a flip mainboard that can be flipped and installed on the base, a pushing cylinder for pushing the flip mainboard to flip, a first pulley group fixed on the flip mainboard, and a second pulley group that can be movably installed on the flip mainboard and cooperates with the first pulley group to clamp a whole stack of paper towels. The cylinder body of the pushing cylinder is movably connected to the base, the piston rod of the pushing cylinder is movably connected to the back side of the flip mainboard, and a cylinder for pushing the first pulley group to move is arranged on the back side of the flip mainboard.

2. A turning mechanism for turning over a whole stack of paper towels as claimed in claim 1, characterized in that: A row of front columns and a row of rear columns are arranged on the base, wherein two bearing seats are arranged on the front columns, and the front end of the flip mainboard is connected between the two bearing seats via a rotating shaft.

3. A turning mechanism for turning over a whole stack of paper towels as claimed in claim 1, characterized in that: The first pulley group includes a first belt groove plate fixed on the flip main board, a plurality of first pulleys rotatably installed between the flip main board and the first belt groove plate, a first belt wound around the first pulley, and a first belt main shaft rotatably installed on the flip main board for driving the first belt to rotate.

4. A turning mechanism for turning over a whole stack of paper towels as claimed in claim 1, characterized in that: The flip main board is provided with a plurality of guide slots, the second pulley group includes a second belt slot plate located on the front side of the flip main board, a movable plate located on the rear side of the flip main board, a plurality of second pulleys connected between the second belt slot plate and the movable plate, a second belt wound on the plurality of second pulleys and a second belt main shaft for driving the second belt to operate, each second pulley passes through the guide slot and is connected to the movable plate, the cylinder is fixed on the flip main board and its cylinder shaft is connected to the movable plate.

5. A turning mechanism for turning over a whole stack of paper towels as claimed in claim 1, characterized in that: A plurality of stop bars are arranged on the flip main board.

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