A glue bag loading inclined pull structure

Abstract

The utility model belongs to the technical field of plastic bag production, specifically relates to a plastic bag loading inclined draw structure, including take -up and pay -off unit, it includes frame, and the pay -off part and take -up part respectively set in the both ends of frame, the outer bag film of folding moves to take -up part folding take -up after being sent from the pay -off part, heat pressing unit is set in the top of frame, it includes the heat pressing plate that is driven by linear drive spare and along the heat pressure of outer bag film conveying direction activity forms the heat pressure to outer bag film, inclined draw unit is set in the one side of frame and is located between heat pressing unit and pay -off part, it includes the inclined draw board that can extend into the outer bag film fold mouth of folding, the utility model discloses through the mutual cooperation of take -up and pay -off unit, heat pressing unit, inclined draw unit and film -feeding unit, so that the inner bag film on film -feeding unit can extend into the outer bag film fold mouth on take -up and pay -off unit through inclined draw unit, and is sealed through the heat pressure of heat pressing unit, to form the plastic bag with double -layer article space.

Description

Technical Field

[0001] This utility model belongs to the field of plastic bag production technology, specifically relating to a diagonal feeding structure for plastic bags. Background Technology

[0002] Plastic bags are bag products made primarily of general-purpose plastics such as polyethylene (PE). They have advantages such as being lightweight, waterproof, and low-cost, and are widely used in shopping, packaging, and other fields.

[0003] Currently, plastic bags generally have only one storage space inside, and all the items are stuffed into this space together, making it impossible to sort and store items. Therefore, bags with double or multiple storage spaces inside are obviously more convenient to use. In view of this, the present invention provides a slanted feeding structure for plastic bags, used to produce plastic bags with double-layer storage space to meet the needs of convenient use. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a slanted feeding structure for plastic bags, comprising: The unwinding and rewinding unit includes a frame, and an unwinding section and a rewinding section respectively disposed at both ends of the frame. The folded outer bag film is released from the unwinding section and then moved to the rewinding section to be folded and rewound. The hot pressing unit is located above the frame and includes a hot pressing plate driven by a linear drive and moving along a direction perpendicular to the outer bag film conveying direction to form a hot pressing on the outer bag film; An inclined pull unit, disposed on one side of the frame and located between the hot pressing unit and the unwinding section, includes an inclined pull plate that can extend into the folded opening of the outer bag film; and The film feeding unit is connected to one side of the frame and is set on the same side as the inclined plate unit. It includes an air-expanding roller for feeding the folded inner bag film. The folded inner bag film is fed out by the air-expanding roller and extends into the fold of the outer bag film after clamping the edge of the inclined plate.

[0005] Preferably, the hot pressing unit further includes a support frame, and the linear drive is disposed above the support frame with its movable end vertically penetrating the top of the support frame and connected to the hot pressing plate.

[0006] Preferably, the inclined pull unit further includes a guide frame, one edge of the inclined pull plate is vertically connected to the inner wall of the guide frame, and its other opposite edge is suspended, so as to divide the interior of the guide frame into an upper inner bag film channel and a lower inner bag film channel that are connected vertically.

[0007] Preferably, the film feeding unit further includes a connecting frame connected to one side of the frame, and the air roller is rotatably connected to the end of the connecting frame. The movable guide roller assembly is mounted on the connecting frame.

[0008] Preferably, the movable guide roller assembly includes a fixed rod connected to the inner side of the connecting frame, a movable rod rotatably connected to the end of the fixed rod, and a guide roller rotatably connected to the inner side of the movable rod.

[0009] Preferably, the movable rod and the fixed rod are connected by bolts.

[0010] Preferably, the air roller is also axially connected to a limiting disc for restricting the axial movement of the inner bag film.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes the cooperation of a winding and unwinding unit, a hot pressing unit, a diagonal pulling unit, and a film feeding unit to allow the inner bag film on the film feeding unit to extend into the fold of the outer bag film unwound on the winding and unwinding unit through the diagonal pulling unit, and then be sealed by the hot pressing unit to form a plastic bag with a double-layer storage space. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the inclined cable unit of this utility model; Figure 4 This is a schematic cross-sectional view of the inclined cable unit structure of this utility model; Figure 5 This is a three-dimensional structural diagram of the membrane placement unit of this utility model; Figure 6 This is a schematic diagram of the outer bag film and the structure of the outer bag film during unwinding of the present invention; Figure 7 This is a schematic diagram of the structure of the plastic bag produced by this utility model.

[0013] In the diagram: 1. Unwinding / rewinding unit; 11. Frame; 12. Unwinding section; 13. Rewinding section; 14. Tensioning roller; 2. Hot pressing unit; 21. Stand; 22. Linear drive component; 23. Hot pressing plate; 3. Inclined pull unit; 31. Guide frame; 32. Inclined pull plate; 4. Film unwinding unit; 41. Connecting frame; 42. Air roller; 43. Limiting plate; 44. Fixed rod; 45. Movable rod; 46. Guide roller. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0015] This utility model relates to a slanted feeding structure for plastic bags, such as... Figures 1-2 As shown, it includes: winding and unwinding unit 1, hot pressing unit 2, inclined pulling unit 3, and film unwinding unit 4.

[0016] Specifically, the unwinding and rewinding unit 1 includes a frame 11, a plurality of tension rollers 14 mounted on the frame 11, and an unwinding section 12 and a rewinding section 13 respectively located at both ends of the frame 11. After the folded outer bag film is released from the unwinding section 12, it is tensioned by the tension rollers 14 and then moved to the rewinding section 13 to be folded and rewound. Both the unwinding section 12 and the rewinding section 13 are common unwinding and rewinding devices, equipped with drive shafts that can be driven by a motor. The drive shaft of the unwinding section 12 is detachably connected to the folded and rewound outer bag film, while the drive shaft of the rewinding section 13 is detachably connected to the folded inner bag film and heat-sealed to form a plastic bag with a double-layer storage space.

[0017] Specifically, the hot pressing unit 2 is located above the frame 11. It includes a stand 21 and a hot pressing plate 23 driven by a linear drive 22 and moving perpendicular to the outer bag film conveying direction to form a hot pressing on the outer bag film. The linear drive 22 is located above the stand 21, and its movable end vertically passes through the top of the stand 21 and connects to the hot pressing plate 23. In this embodiment, the stand 21 is inverted U-shape and is mounted on the frame 11 along the width direction of the frame 11. The linear drive 22 can be a cylinder, electric push rod, etc. The linear drive 22, the hot pressing plate 23, and the winding and unwinding unit 1 are all connected to an external control unit to realize their operation, such as a PLC controller or industrial computer. It should be noted that when the linear drive 22 is running, it needs to perform periodic up and down reciprocating motion. The winding and unwinding unit 1 cooperates with the linear drive 22 to perform periodic winding action to keep the width of the plastic bag with double-layer storage space formed during hot pressing consistent.

[0018] Specifically, such as Figures 3-4 As shown, the inclined pull unit 3 is disposed on one side of the frame 11 and located between the hot pressing unit 2 and the unwinding section 12. It includes an inclined pull plate 32 that can extend into the folded opening of the outer bag film, and a guide frame 31. One edge of the inclined pull plate 32 is vertically connected to the inner wall of the guide frame 31, and its other opposite edge is suspended, thus dividing the interior of the guide frame 31 into an upper inner bag film channel and a lower inner bag film channel with vertical communication. Figure 4A through "U" shaped channel is formed inside the guide frame 31.

[0019] Furthermore, such as Figure 5 As shown, the film feeding unit 4 is connected to one side of the frame 11 and is arranged on the same side as the inclined pull unit 3. It includes an air-expanding roller 42 for feeding the folded inner bag film, and a connecting frame 41 connected to one side of the frame 11. The air-expanding roller 42 is rotatably connected to the end of the connecting frame 41 via a rotating bearing. The folded and wound inner bag film is detachably placed on the air-expanding roller 42. Figure 4 As shown, after the folded inner bag film is unwound from the air expansion roller 42, it is clamped by the inclined pull plate 32 and passes through the guide frame 31. It can then extend into the fold of the folded outer bag film conveyed on the unwinding and rewinding unit 1. After being heat-sealed by the heat-pressing unit 2, it can be synchronously conveyed and rewound with the outer bag film.

[0020] Working principle: When in use, the folded outer bag film roll is first placed on the unwinding section 12 for unwinding. After being tensioned by several tensioning rollers 14, it passes through the conveyor below the hot pressing unit 2 and is wound up on the winding section 13. The folded outer bag film fold should face the inclined pull unit 3 so that the inclined pull plate 32 can extend into the folded outer bag film fold. The folded inner bag film is then placed on the air expansion roller 42 and tightened. Pulling the inner bag film causes the air expansion roller 42 to rotate and unwind, allowing the inner bag film to pass through the guide frame 31. Simultaneously, the edge of the inclined plate 32 extends into the fold of the inner bag film to restrict its movement, ensuring the inner bag film is stably and evenly folded and fed into the fold of the outer bag film. Before driving the outer bag film to rewind, the inner bag film extending into the fold of the outer bag film needs to be stretched along the outer bag film conveying direction to below the hot pressing unit 2. The operation of the hot pressing unit 2 causes the hot pressing plate 23 to hot-press the inner and outer bag films together. Then, the outer bag film is automatically rewound. After the inner and outer bag films are connected, the rewinding of the outer bag film drives the automatic oblique unwinding of the inner bag film. Through the periodic up-and-down reciprocating motion of the linear drive 22, a structure like... Figure 7 As shown, the plastic bags with double storage space, connected together, are eventually cut along the heat-sealing line to form individual plastic bags. Example 2

[0021] like Figure 5 As shown, the only difference between this embodiment and Embodiment 1 above is that this embodiment also provides a movable guide roller assembly. This solves the tension problem and the guide position problem of the inner bag film before passing through the guide frame 31.

[0022] Specifically, the movable guide roller assembly is mounted on the connecting frame 41, and includes a fixed rod 44 connected to the inner side of the connecting frame 41, a movable rod 45 rotatably connected to the end of the fixed rod 44, and a guide roller 46 rotatably connected to the inner side of the movable rod 45. The guide roller 46 is transversely funnel-shaped, with its two ends gradually tapering towards the center, so that when the inner bag film passes through the guide roller 46, it can restrict the movement of both sides of the inner bag film in the axial direction of the guide roller 46, so as to ensure stable unidirectional conveying of the inner bag film.

[0023] The movable rod 45 and the fixed rod 44 are connected by bolts. A through hole is provided at the connection point between the two for the bolt to be inserted. After the bolt is inserted into the through hole to connect the two, it is locked and fixed by a nut. The rotation between the two is achieved by tightening and loosening the nut, so that the position of the guide roller 46 can be adjusted by the movable rod 45, so that the inner bag film can pass through the guide frame 31 in a position relatively parallel to the guide frame 31, so as to prevent the inner bag film from contacting and rubbing against the edge of the opening end of the guide frame 31 and causing damage.

[0024] Furthermore, the air-expansion roller 42 is also axially connected to a limiting disk 43 for restricting the axial movement of the inner bag film. The limiting disk 43 rotates synchronously with the air-expansion roller 42, and its radial dimension is larger than that of the air-expansion roller 42, so that when the inner bag film roll is placed on the air-expansion roller 42, the end of the roll can fit against the limiting disk 43 to prevent the inner bag film roll from shifting axially.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A diagonal feeding structure for plastic bags, characterized in that, include: The unwinding and rewinding unit (1) includes a frame (11) and an unwinding section (12) and a rewinding section (13) respectively disposed at both ends of the frame (11). The folded outer bag film is released from the unwinding section (12) and moved to the rewinding section (13) to be folded and rewound. The hot pressing unit (2) is located above the frame (11) and includes a hot pressing plate (23) driven by a linear drive (22) and moving in a direction perpendicular to the outer bag film conveying direction to form a hot pressing on the outer bag film. An inclined pull unit (3), disposed on one side of the frame (11) and located between the hot pressing unit (2) and the unwinding section (12), includes an inclined pull plate (32) that can extend into the folded opening of the outer bag film; and The film feeding unit (4) is connected to one side of the frame (11) and is set on the same side as the inclined pull unit (3). It includes an air-expanding roller (42) for feeding the folded inner bag film. The folded inner bag film is fed out by the air-expanding roller (42) and extends into the fold of the outer bag film after clamping the edge of the inclined pull plate (32).

2. The inclined cable structure for loading rubber bags according to claim 1, characterized in that: The hot pressing unit (2) also includes a stand (21), and the linear drive (22) is located above the stand (21) and its movable end penetrates vertically through the top of the stand (21) and is connected to the hot pressing plate (23).

3. The inclined feeding structure for plastic bags according to claim 1, characterized in that: The inclined pull unit (3) also includes a guide frame (31), one edge of the inclined pull plate (32) is vertically connected to the inner wall of the guide frame (31), and its other opposite edge is suspended, so as to divide the interior of the guide frame (31) into an upper inner bag film channel and a lower inner bag film channel that are connected vertically.

4. The oblique pull structure for loading a plastic bag according to any one of claims 1-3, characterized in that: The film feeding unit (4) further includes a connecting frame (41) connected to one side of the frame (11), and the air roller (42) is rotatably connected to the end of the connecting frame (41). The movable guide roller assembly is mounted on the connecting frame (41).

5. The inclined cable structure for loading rubber bags according to claim 4, characterized in that: The movable guide roller assembly includes a fixed rod (44) connected to the inside of the connecting frame (41), a movable rod (45) rotatably connected to the end of the fixed rod (44), and a guide roller (46) rotatably connected to the inside of the movable rod (45).

6. The inclined feeding structure for plastic bags according to claim 5, characterized in that: The movable rod (45) and the fixed rod (44) are connected by bolts.

7. The oblique pull structure for loading the plastic bag according to claim 4, characterized in that: The air roller (42) is also axially connected to a limiting disc (43) for restricting the axial movement of the inner bag film.

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