A winding roller shaft and overlapping plastic bag winding device

Abstract

The application provides a winding roller and an overlapping plastic bag winding device. The winding roller comprises an outer plate module, the outer plate module comprises at least two circular arc plates and an adsorption plate spliced between the circular arc plates, adsorption holes are arranged on the adsorption plate at intervals, a transmission part is arranged on the inner side of the outer plate module, a matching module is connected between the outer plate module and the transmission part, a power module is connected to the transmission part, elastic parts are connected to the ends of the circular arc plates away from the power module, and the outer diameter size of the outer plate module changes when the power module drives the transmission part to move. The application has a clever design, realizes the change of the outer diameter size of the winding roller by control, and realizes the adsorption of the plastic bag on the outer side of the roller by the vacuum adsorption mode, so that the wound plastic bag roll cannot be torn due to too close to the winding roller.

Description

Technical Field

[0001] This invention relates to the field of winding equipment, and more specifically, to a winding roller and an overlapping plastic bag winding device. Background Technology

[0002] Currently, for convenient packaging and transportation, common plastic bags are made by continuously rolling the bag into a cylinder, with a dotted line separating two adjacent bags. Users tear off a bag at this point. While this method of tearing and using plastic bags is common, it's inconvenient because one hand must hold the roll of bags while the other tears the bag. Furthermore, if the roll isn't held securely, it can easily unravel, requiring re-rolling. Therefore, while cylindrical plastic bags offer advantages like convenient packaging and transportation, they have the drawback of being difficult to tear, especially in large shopping malls where users with loose items cannot easily use both hands simultaneously. Therefore, machines have been developed on the market that pre-tear the continuous strip of plastic bags at the dotted line, causing two adjacent bags to partially overlap.

[0003] However, existing overlapping plastic bag winding equipment on the market has a problem: the innermost plastic bag is too tightly attached to the winding roller, causing it to tear when the pushing mechanism pushes out the overlapping plastic bags. As a result, the last few plastic bags are often discarded due to damage when using the rolled plastic bags, affecting the product yield and the product's reputation. Summary of the Invention

[0004] The purpose of this invention is to provide a winding roller and an overlapping plastic bag winding device.

[0005] The present invention aims to prevent the innermost plastic bag from being torn or damaged when the plastic bag roll is pushed out.

[0006] Compared with the prior art, the technical solution of the present invention and its beneficial effects are as follows:

[0007] A take-up roller includes: an outer plate module, the outer plate module comprising: at least two arc plates and an adsorption plate spliced ​​between the arc plates; the adsorption plate is provided with adsorption holes at intervals; a transmission component disposed inside the outer plate module; a mating module connected between the outer plate module and the transmission component; a power module connected to the transmission component; and an elastic component, both ends of which are respectively connected to the ends of the arc plates away from the power module; wherein, when the power module drives the transmission component to move, displacement occurs within the mating module, and the outer diameter of the outer plate module changes.

[0008] As a further improvement, the transmission component is provided with a vacuum chamber, which is connected to the adsorption hole.

[0009] As a further improvement, the mating module includes: a push block connected to the end of the transmission component away from the power module; and a pad block disposed on the inner side of the arc plate, the pad block mating with the push block.

[0010] As a further improvement, a clamp fixed to the outside of the arc plate is also included.

[0011] As a further improvement, the number of the arc plates is two.

[0012] As a further improvement, an elastic element is also included, with both ends of the elastic element connected to the end of the arc plate away from the power module.

[0013] As a further improvement, the power module is a first cylinder.

[0014] As a further improvement, a connector is also included that snaps onto the transmission component, with one end of the power module fixedly mounted and the other end of the power module connected to the connector.

[0015] An overlapping plastic bag winding device includes: a turntable on which a winding roller is mounted; a motor connected to the winding roller, which drives the winding roller to rotate; and a pushing mechanism cooperating with the winding roller.

[0016] As a further improvement, the pushing mechanism includes: a second cylinder; a pushing plate, the pushing plate being connected to the output end of the second cylinder, the outer edge of the pushing plate being provided with four slots evenly distributed along the circumference, and the take-up roller shaft being placed in one of the slots.

[0017] The beneficial effects of this invention are as follows:

[0018] The outer plate module is designed with separate plates, and a matching module is set inside the outer plate module. The push block drives the transmission component to move through the connector. The outer diameter of the take-up roller shaft changes through the overlap between the push block and the pad block. The outer diameter of the take-up roller shaft during winding is larger than that during pushing, so that the innermost plastic bag of the plastic bag roll will not be torn due to being too close to the take-up roller shaft.

[0019] The outer panel module includes an adsorption plate with adsorption holes, where a vacuum negative pressure is applied, causing the plastic bags to adhere to the outer surface of the take-up roller shaft. The motor drives the take-up roller shaft to rotate, thereby achieving the winding of overlapping plastic bags. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the take-up roller provided in an embodiment of the present invention.

[0021] Figure 2 This is an exploded view of the take-up roller shaft provided in an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional view of the winding roller shaft provided in an embodiment of the present invention.

[0023] Figure 4 yes Figure 3 A magnified schematic diagram of part A.

[0024] Figure 5 This is a schematic diagram of the structure of the overlapping plastic bag winding device provided in an embodiment of the present invention.

[0025] In the diagram: 1. Rewinding roller; 11. Outer panel module; 111. Arc plate; 112. Adsorption plate.

[0026] 1121. Adsorption hole 12. Transmission component 121. Vacuum chamber 13. Matching module

[0027] 131. Push block 132. Pad block 14. Power module 15. Clamp 16. Elastic component

[0028] 17. Connector 2. Pushing mechanism 21. Pushing plate 211. Slot 3. Turntable

[0029] 4. Motor Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, 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 as "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.

[0032] Reference Figures 1 to 5 As shown, a take-up roller 1 includes: an outer plate module 11, the outer plate module 11 including: at least two arc plates 111 and an adsorption plate 112 spliced ​​between the arc plates 111; adsorption holes 1121 are spaced apart on the adsorption plate 112; a transmission member 12 disposed inside the outer plate module 11; a mating module 13 connected between the outer plate module 11 and the transmission member 12; and a power module 14 connected to the transmission member 12; wherein, when the power module 14 drives the transmission member 12 to move, displacement occurs within the mating module 13, and the outer diameter of the outer plate module 11 changes. The outer plate module 11 is configured with separate plates, and a matching module 13 is provided inside the outer plate module 11. The push block 131 drives the transmission component 12 to move through the connector 17. The outer diameter of the take-up roller 1 changes through the overlap between the push block 131 and the pad block 132. The outer diameter of the take-up roller 1 during winding is larger than that during pushing, so that the innermost plastic bag of the plastic bag roll will not be torn due to being too close to the take-up roller 1. The outer plate module 11 includes an adsorption plate 112 with adsorption holes 1121. The adsorption holes 1121 have a vacuum negative pressure, so that the plastic bag is adsorbed on the outer surface of the take-up roller 1. The motor 4 drives the take-up roller 1 to rotate, thereby realizing the winding of the overlapping plastic bags.

[0033] Reference Figure 3 As shown, the transmission component 12 is provided with a vacuum chamber 121, which is connected to the adsorption hole 1121. The vacuum chamber 121 is connected to a vacuum generating device, so that there is a negative pressure at the adsorption hole 1121, and the plastic bag can be easily adsorbed onto the take-up roller 1.

[0034] Reference Figures 2 to 4 As shown, the mating module 13 includes: a push block 131 connected to the end of the transmission member 12 away from the power module 14; and a pad block 132 disposed on the inner side of the arc plate 111, the pad block 132 mating with the push block 131. The power module 14 drives the transmission member 12 to move via the connector 17, thereby achieving overlap and separation between the pad block 132 and the push block 131, causing a change in the size of the outer plate module 11.

[0035] Reference Figures 1 to 2As shown, the take-up roller shaft 1 also includes a clamp 15 fixed to the outside of the arc plate 111. The clamp 15 has a certain deformation capability. When the arc plate 111 undergoes displacement changes, the clamp 15 restricts the arc plate 111.

[0036] Reference Figure 2 As shown, there are two circular arc plates 111.

[0037] Reference Figure 5 As shown, the take-up roller 1 also includes an elastic element 16, both ends of which are connected to the ends of the arc plate 111 away from the power module 14. The elastic element 16 provides a certain tension between the arc plates 111.

[0038] The power module 14 is the first cylinder.

[0039] Reference Figure 3 As shown, the take-up roller 1 also includes a connector 17 that is snapped onto the transmission component 12. One end of the power module 14 is fixedly disposed, and the other end of the power module 14 is connected to the connector 17. The power module 14 drives the transmission component 12 to move back and forth through the connector 17.

[0040] Reference Figure 5 As shown, an overlapping plastic bag winding device includes: a turntable 3, on which a winding roller 1 is mounted; a motor 4 connected to the winding roller 1, the motor 4 driving the winding roller 1 to rotate; and a pushing mechanism 2 cooperating with the winding roller 1. The pushing mechanism 2 includes: a second cylinder (not shown in the figure); a pushing plate 21, the pushing plate 21 being connected to the output end of the second cylinder, the outer circumference of the pushing plate 21 having four equally spaced slots 211, the winding roller 1 being placed in one of the slots 211. The number of winding rollers 1 is four, and the winding rollers 1 are equally spaced around the axis of the turntable 3.

[0041] It should be noted that the overlapping plastic bag winding device provided by this invention is located at the output end of the equipment, while the input end of the equipment is equipped with a bag-breaking and overlapping device. The strip-shaped plastic bags produced by the bag-making machine are drawn into the bag-breaking and overlapping device, which breaks the plastic bags at the break point to form finished plastic bags. Two adjacent plastic bags are then conveyed to the overlapping plastic bag winding device in a partially overlapping manner. The overlapping plastic bag winding device then winds the plastic bags into a roll shape, which is finally sent to the discharge mechanism. This invention protects the overlapping plastic bag winding device; other mechanisms are existing technology and will not be described in detail here.

[0042] The working principle of the winding roller 1 and the overlapping plastic bag winding device provided by the present invention is as follows:

[0043] Before the take-up roller 1 starts to take up the plastic bag, the first cylinder is pushed out. The first cylinder drives the transmission component 12 to move through the connector 17, so that the relative position between the push block 131 and the pad block 132 changes. The push block 131 and the pad block 132 are superimposed, and the outer diameter of the outer plate module 11 becomes larger. The negative pressure at the suction hole 1121 causes the plastic bag to be adsorbed onto the take-up roller 1. The motor 4 drives the take-up roller 1 to rotate. Since there is some overlap between two adjacent plastic bags, each plastic bag is rolled up into a plastic bag roll as the take-up roller 1 rotates.

[0044] After the plastic bag is wound up, the first cylinder retracts, the push block 131 returns to its initial position, and there is no overlap between the push block 131 and the pad block 132. Due to the pulling force of the elastic element 16, the outer diameter of the outer plate module 11 is reduced to its initial size, the vacuum generator stops working, there is no negative pressure at the suction hole 1121, and the motor 4 stops rotating; the turntable 3 rotates 90°, and the next winding roller 1 is in place, ready for the next plastic bag winding process;

[0045] Since the take-up roller 1 is placed in one of the slots 211, the second cylinder drives the pusher plate 21 to move outward, and the pusher plate 21 separates the wound plastic bag from the take-up roller 1. Then the second cylinder retracts to its original position. Figure 5 As shown, the rotation of turntable 3 drives the rotation of take-up roller shaft 1, and then drives the rotation of pusher plate 21 through the locking and disengagement between take-up roller shaft 1 and slot 211.

[0046] The working principle and process of this embodiment can be found in the corresponding content of the foregoing embodiments.

[0047] The same or similar parts among the various embodiments described above can be referred to each other. Each embodiment focuses on the differences from other embodiments, but does not limit the differences from each other to be interchangeable or superimposed.

[0048] The above embodiments are only used to explain the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that any modifications and equivalent substitutions that do not depart from the spirit and scope of the present invention should fall within the protection scope of the claims of the present invention.

Claims

1. A take-up roller, characterized in that, include: An outer panel module, comprising: at least two arc-shaped plates and an adsorption plate spliced ​​between the arc-shaped plates; the adsorption plate is provided with adsorption holes at intervals. Transmission components are installed inside the outer panel module; A mating module connecting the outer panel module and the transmission component; A power module connected to the transmission component; An elastic element, both ends of which are respectively connected to the end of the arc plate away from the power module; When the power module drives the transmission component to move, displacement occurs within the mating module, and the outer diameter of the outer plate module changes. The transmission component is provided with a vacuum chamber, which is connected to the adsorption hole; The mating module includes: A pusher block connected to the end of the transmission component away from the power module; A pad is disposed on the inner side of the arc plate, and the pad cooperates with the push block.

2. A take-up roller according to claim 1, characterized in that, It also includes clamps fixed to the outside of the arc plate.

3. A take-up roller according to claim 1, characterized in that, The number of arc plates is 2.

4. A take-up roller according to claim 1, characterized in that, The power module is the first cylinder.

5. A take-up roller according to claim 4, characterized in that, It also includes a connector that snaps onto the transmission component, with one end of the power module fixedly mounted and the other end of the power module connected to the connector.

6. A device for winding up overlapping plastic bags, characterized in that, include: A turntable, on which at least one take-up roller as described in any one of claims 1 to 5 is mounted; A motor connected to the take-up roller shaft drives the take-up roller shaft to rotate; A feeding mechanism that cooperates with the take-up roller shaft.

7. The overlapping plastic bag winding device according to claim 6, characterized in that, The pushing mechanism includes: a second cylinder; a pushing plate, the pushing plate being connected to the output end of the second cylinder, and the outer edge of the pushing plate being provided with four slots evenly distributed along the circumference, with the take-up roller shaft placed in one of the slots.

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