A flat winding device of a continuous roll bag making machine

Abstract

The utility model discloses a kind of flat winding device of continuous roll bag making machine, including rack, the rack is equipped with for single-sided opening bagging roller group and for winding winding roller, the bagging roller group is arranged in winding roller upstream, and adsorption component is equipped between the bagging roller group and winding shaft;The adsorption component includes adsorption plate body and negative pressure generating device, the adsorption plate body has the working surface for the flat movement of roll material, and the working surface is equipped with several adsorption holes, which are communicated with negative pressure generating device.The utility model moves roll material by adsorption component guidance, and negative pressure generating device makes adsorption plate body adsorb roll material by adsorption hole, while adsorption hole sucks air, and the upper surface of roll material is pressed on adsorption plate body by atmospheric pressure, while avoiding air into roll material, and air in roll material can also be discharged, to ensure that roll material is flat.

Description

Technical Field

[0001] This utility model relates to the field of continuous roll bag winding, and in particular to a flat winding device for a continuous roll bag making machine. Background Technology

[0002] Continuous roll bag making machines produce several individual bags from roll material, connecting them end-to-end at point break lines and then winding them into a roll. To use, the bags are simply torn along the point break lines to obtain individual bags. However, when separating continuous roll bags into individual bags, the point break lines can cause the bag openings to stick together, making them difficult to open. To facilitate opening, the industry has proposed a bag-squeezing process: a pair of traction rollers with different speeds are installed in the traction section, causing relative slippage between the upper and lower surfaces of the film, resulting in the bag opening being squeezed open from one side. After squeezing, the continuously rolled bags pass through a swing arm with guide rollers and enter the winding device for winding.

[0003] However, single-sided open bags have gaps between their upper and lower surfaces. When the high-speed continuous roll bag passes the up-and-down swinging guide roller (especially when the continuous roll bag leaves the guide roller), air is squeezed into the gap, causing the rolled bag to bulge and have an uneven roll diameter after winding. If the up-and-down swinging guide roller moves too much, the continuous roll bag may even break. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a flattening winding device for a continuous roll bag making machine. Before winding, a single-sided open continuous roll bag passes through an adsorption component, which uses negative pressure adsorption to prevent air from entering the bag or even expel air from the bag, allowing the bag to enter the winding station flat.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a flattening and winding device for a continuous roll bag making machine, comprising a frame, wherein the frame is provided with a bag-rubbing roller group for single-sided opening and a winding roller for winding, the bag-rubbing roller group is located upstream of the winding roller, and an adsorption assembly is provided between the bag-rubbing roller group and the winding shaft; the adsorption assembly comprises an adsorption plate body and a negative pressure generating device, the adsorption plate body has a working surface for flattening and moving the roll material, and the working surface has a plurality of adsorption holes communicating with the negative pressure generating device.

[0006] This invention guides the movement of the roll material through an adsorption component. A negative pressure generating device causes the adsorption plate body to adsorb the roll material through the adsorption holes. At the same time, the adsorption holes draw in air, and atmospheric pressure presses the upper surface of the roll material onto the adsorption plate body. This prevents air from entering the roll material and also allows air that has entered the roll material to be expelled, ensuring that the roll material is flat.

[0007] Preferably, the working surface of the adsorption plate body is further provided with additional adsorption holes, and an airflow regulating cover for adjusting the opening size of each additional adsorption hole is provided at the additional adsorption hole. The airflow regulating cover is rotatably mounted on the adsorption plate body. By increasing the number of adsorption holes, the adsorption force is improved. In addition, the adsorption force can be adjusted by adjusting the opening size of the additional adsorption holes to adapt to rolls of material of different thicknesses.

[0008] Furthermore, at least two additional adsorption holes are provided, and these additional adsorption holes are located on both sides of the working surface. This further expands the adjustable range.

[0009] Preferably, the negative pressure generating device is a fan or a vacuum pump.

[0010] Preferably, the working surface of the adsorption plate body is a smooth curved surface or a plane.

[0011] Preferably, a flexible curtain for storing material is provided upstream of the adsorption assembly. The roll material sequentially passes through the bag-rubbing roller group, the traction roller group, the flexible curtain, the adsorption assembly, and the take-up shaft. The flexible curtain can store material, and its bottom can be raised and lowered to achieve material storage and ensure stable tension of the roll material.

[0012] Furthermore, the flexible curtain includes a fixed end and a free end that can move up and down depending on the amount of material stored in the roll. The fixed end of the flexible curtain is mounted on the frame, and the frame is equipped with a sensor that detects when the free end has risen to the correct position, causing the unwinding shaft to unwind. The sensor is electrically connected to the power source of the unwinding shaft. The sensor detects the position of the free end of the flexible curtain. After the free end rises to a certain height, the sensor sends a signal, and the power source of the unwinding shaft drives the unwinding shaft to accelerate the unwinding speed, ensuring the tension of the roll. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is a reference diagram of material movement according to this utility model.

[0016] Figure 4 This is a utility model Figure 1 A magnified view of part A.

[0017] The names of the body parts referred to by the numbers in the above attached diagrams are as follows: The components include: 1. Frame; 2. Bag-rubbing roller assembly; 3. Take-up shaft; 4. Adsorption assembly; 41. Adsorption plate body; 42. Working surface; 43. Adsorption hole; 51. Additional adsorption hole; 52. Air volume adjustment cover; 6. Negative pressure generating device; 7. Soft curtain; 71. Fixed end; 72. Free end; 8. Traction roller assembly; 9. Roll material. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] See Figure 1 A flattening and winding device for a continuous roll bag making machine includes a frame 1. The frame 1 is equipped with a bag-rubbing roller group 2 for single-sided opening and a winding roller for winding. The bag-rubbing roller group 2 is used to rub the broken roll material into a bag, making one side of the roll open for convenient subsequent use. The winding roller is connected to a winding power source that drives it to perform the winding action. Both the bag-rubbing roller group 2 and the winding roller are existing technologies and will not be described in detail here.

[0020] The bag-rubbing roller assembly 2 is located upstream of the take-up roller, and an adsorption assembly 4 is provided between the bag-rubbing roller assembly 2 and the take-up shaft 3. The adsorption assembly 4 includes an adsorption plate body and a negative pressure generating device 6. The adsorption plate body 41 is fixedly mounted on the frame 1, and the adsorption plate body has a working surface 42 for the flat movement of the roll material. The working surface 42 of the adsorption plate body is either a smooth curved surface or a plane. Several adsorption holes 43 communicating with the negative pressure generating device 6 are opened on the working surface 42. The negative pressure generating device 6 is connected to the bottom of the adsorption plate body. The negative pressure generating device 6 is a fan or a vacuum pump. The vacuum pump is connected to the adsorption plate body through a vacuum pipeline. The fan can be directly installed at the bottom of the adsorption plate body (see reference). Figure 2 and Figure 3 ).

[0021] To increase the upper limit of adsorption force, see Figure 4 The working surface 42 of the adsorption plate body is also provided with additional adsorption holes 51. These additional adsorption holes 51 can increase the adsorption area and improve the upper limit of the adsorption force. An airflow regulating cover 52 is provided at each of the additional adsorption holes 51 to adjust its opening size. The airflow regulating cover 52 is rotatably mounted on the adsorption plate body and hinged to it. By rotating to adjust the opening size of the additional adsorption holes 51, the adsorption force can be adjusted to accommodate different specifications of rolled materials. Furthermore, at least two additional adsorption holes 51 are provided, located on both sides of the working surface 42. Increasing the number of additional adsorption holes 51 can further improve the upper limit of the adsorption force.

[0022] To ensure the tension of the rolled material, a soft curtain 7 for storing material is provided upstream of the adsorption component 4, as referenced. Figure 3The roll material sequentially passes through the bag-rubbing roller group 2, the traction roller group 8, the flexible curtain 7, the adsorption component 4, and the take-up shaft 3. The bag-rubbing roller group 2 makes a single-sided opening for the broken roll material. The traction roller group 8, the flexible curtain 7, the adsorption component 4, and the take-up shaft 3 cooperate with each other to ensure stable tension of the roll material and further ensure that the roll material is wound flat, resulting in a consistent roll diameter. The flexible curtain 7 includes a fixed end 71 and a free end 72 that can move up and down depending on the amount of roll material stored. The fixed end 71 of the flexible curtain 7 is mounted on the frame 1. The frame 1 is equipped with a sensor for detecting when the free end 72 has risen to the upper limit position, causing the unwinding shaft to unwind. The sensor is electrically connected to the power source of the unwinding shaft. The sensor is mounted on the frame 1 at the upper limit position of the free end 72. When the sensor detects that the free end 72 has risen to the upper limit position, the power source controls the unwinding shaft to unwind, and the free end 72 moves down due to gravity. The traction roller group 8 is existing technology and will not be described in detail here.

[0023] The working principle of this utility model is described below with reference to the accompanying drawings: The bag-rubbing roller group 2 opens one side of the roll material, which is then sent out by the traction roller group, and then stored in the soft curtain 7. The roll material then enters the adsorption plate body, and the adsorption hole 43 will draw in air, so that the airflow will make the roll material adhere tightly to the adsorption plate body, expel the air in the roll material bag, and finally the roll material is wound up flat by the winding shaft 3.

[0024] In the description of this invention, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A leveling and winding device for a continuous roll bag making machine, comprising a frame (1), wherein the frame (1) is provided with a bag-rubbing roller group (2) for single-sided opening and a winding roller for winding, wherein the bag-rubbing roller group (2) is disposed upstream of the winding roller, characterized in that: An adsorption assembly (4) is provided between the bag-rubbing roller group (2) and the winding shaft (3); the adsorption assembly (4) includes an adsorption plate body and a negative pressure generating device (6). The adsorption plate body (41) has a working surface (42) for the roll material to move smoothly. The working surface (42) has a number of adsorption holes (43) that are connected to the negative pressure generating device (6).

2. The leveling and winding device of the continuous roll bag making machine according to claim 1, characterized in that: The working surface (42) of the adsorption plate body is also provided with an additional adsorption hole (51). The additional adsorption hole (51) is provided with an air volume adjustment cover (52) for adjusting its opening size. The air volume adjustment cover (52) is rotatably set on the adsorption plate body.

3. The leveling and winding device of the continuous roll bag making machine according to claim 2, characterized in that: At least two additional adsorption holes (51) are provided, and the additional adsorption holes (51) are provided on both sides of the working surface (42).

4. The leveling and winding device of the continuous roll bag making machine according to claim 1, characterized in that: The negative pressure generating device (6) is a fan or a vacuum pump.

5. The leveling and winding device for a continuous roll bag making machine according to claim 1, characterized in that: The working surface (42) of the adsorption plate body is a smooth curved surface or a plane.

6. The leveling and winding device for a continuous roll bag making machine according to claim 1, characterized in that: The upstream of the adsorption component (4) is provided a soft curtain (7) for storing material, and the roll material passes through the bag-rubbing roller group (2), the traction roller group (8), the soft curtain (7), the adsorption component (4) and the winding shaft (3) in sequence.

7. The leveling and winding device for a continuous roll bag making machine according to claim 6, characterized in that: The soft curtain (7) includes a fixed end (71) and a free end (72) that can move up and down depending on the storage of the roll material. The fixed end (71) of the soft curtain (7) is set on the frame (1). The frame (1) is equipped with a sensor for detecting when the free end (72) rises to the position so that the unwinding shaft can perform an unwinding action. The sensor is electrically connected to the power source of the unwinding shaft.

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