A plastic bag production edge folding device

Abstract

The utility model belongs to the technical field of plastic bag production, specifically disclose a kind of plastic bag production is used edge folding device, including device table, and the edge folding seat is fixedly installed on device table, and the inboard of device table is rotatably connected with first roll and second roll respectively, and the inner surface of device table is rotatably connected with the shaft of electric push mechanism, and the outer surface of the shaft is fixedly equipped with slewing ring, and the outer surface of slewing ring is fixedly connected with edge folding frame, and the outer surface of edge folding frame is provided with smoothing and wrinkle removal mechanism.

Description

Technical Field

[0001] This application relates to the field of plastic bag production technology, specifically to a folding device for plastic bag production. Background Technology

[0002] Plastic bags are lightweight and flexible packaging containers made primarily of plastics (such as polyethylene and polypropylene) through processes such as blow molding, casting, or heat sealing. Folding the edges of plastic bags can increase the layering of the bag's edges, allowing stress to be distributed over a wider area and reducing localized stress concentration.

[0003] Currently, manual folding of plastic bags is still a common operation. However, this method has significant drawbacks. It is highly dependent on the operator's skill level and speed. Inconsistent skill levels and fluctuations in condition can affect the operation. At the same time, the precision of manual hand movements is limited, and there is a lack of auxiliary positioning, making it difficult to ensure uniform force application, which can easily cause wrinkles in the plastic bag when folding. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose a folding device for plastic bag production, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a folding device for plastic bag production, including a device platform. A folding seat is fixedly installed on the device platform. A first roller and a second roller are rotatably connected to the inner side of the device platform. A rotating shaft is rotatably connected to the inner surface of the device platform via an electric push mechanism. A rotating frame is fixedly sleeved on the outer surface of the rotating shaft. A folding frame is fixedly connected to the outer surface of the rotating frame. A smoothing and wrinkle-removing mechanism is provided on the folding frame. A flattening mechanism for pressing the plastic bag is provided on the device platform.

[0006] Preferably, the electric push mechanism includes an electric push rod fixedly installed on the device platform. The output end of the electric push rod is fixedly connected to a shift plate. The electric push mechanism can drive the rotating shaft, thereby linking the rotating frame to flip and using the folding edge to perform edge folding operations on the plastic bag.

[0007] Preferably, a guide rail seat is fixedly installed on the device platform, a rack is slidably connected to the inner side of the guide rail seat, and the outer surface of the rack is fixedly connected to the outer surface of the shift plate. A gear is fixedly connected to one end of the rotating shaft, and the outer surface of the gear meshes with the outer surface of the rack.

[0008] Preferably, the smoothing and wrinkle-removing mechanism includes an inner sliding shaft fixedly inserted inside the folding edge, and a spring is movably sleeved on the outer surface of the inner sliding shaft. The smoothing and wrinkle-removing mechanism can remove wrinkles from the plastic bag during the folding process.

[0009] Preferably, a wrinkle-removing plate is slidably sleeved on the outer surface of the inner sliding shaft, and the outer surface of the wrinkle-removing plate is slidably connected to the inner side of the folded frame. A handle is provided on the outer surface of the wrinkle-removing plate.

[0010] Preferably, the flattening mechanism includes an upper magnet fixedly connected to the top of the inner side of the device platform, a lower magnet fixedly installed at the bottom of the inner side of the device platform, and a pressing iron sheet slidably connected to the inner side of the device platform. The flattening mechanism can first press the area of ​​the plastic bag to be folded so as to cooperate with the folding frame to perform folding and wrinkle removal.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The folding device for producing plastic bags activates an electric push rod during folding. The electric push mechanism allows the folding frame to fold the plastic bag during the flipping process. This series of mechanical transmission structures makes the folding action more precise and standardized, and can complete the folding operation according to the preset trajectory and force. This avoids problems such as uneven folding and wrinkles caused by uneven force or angle deviation during manual folding.

[0012] 2. The folding device for plastic bag production allows the operator to manually hold two sets of handles and move the two sets of wrinkle-removing plates in opposite directions after the plastic bag is folded on the folding seat. This causes the two sets of wrinkle-removing plates to slide away from each other along the inner sliding shaft surface. Through the movement of the two sets of wrinkle-removing plates, a comprehensive and meticulous wrinkle-removing and smoothing treatment can be performed on the area near the folding edge of the plastic bag, thereby eliminating any tiny wrinkles that may occur during the folding process and making the folded edge of the plastic bag smoother and more even. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the device from another perspective; Figure 3 This is a schematic diagram of the surface structure of the rotating frame in this application; Figure 4 This is a schematic diagram of the cross-sectional structure of the folded frame of this application; Figure 5 This is a schematic diagram of the surface structure of the iron sheet covered in this application.

[0014] The components include: 1. Device platform; 2. Folding seat; 3. First roller; 4. Second roller; 5. Rotating shaft; 6. Rotating frame; 7. Folding frame; 8. Electric push rod; 9. Shifting plate; 10. Guide rail seat; 11. Rack; 12. Gear; 13. Inner sliding shaft; 14. Spring; 15. Wrinkle removal plate; 16. Handle; 17. Upper magnet; 18. Lower magnet; 19. Pressing iron sheet. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Please see Figures 1-5 A folding device for producing plastic bags includes a platform 1, a folding seat 2 fixedly installed on the platform 1, a first roller 3 and a second roller 4 rotatably connected to the inner side of the platform 1, a rotating shaft 5 rotatably connected to the inner surface of the platform 1 via an electric push mechanism, a rotating frame 6 fixedly sleeved on the outer surface of the rotating shaft 5, a folding frame 7 fixedly connected to the outer surface of the rotating frame 6, a smoothing and wrinkle-removing mechanism provided on the folding frame 7, and a flattening mechanism for pressing the plastic bag provided on the platform 1.

[0017] Through the above technical solution, during the use of the device, the two ends of the plastic bag are respectively wound on the first roller 3 and the second roller 4. During this period, the first roller 3 and the second roller 4 can rotate flexibly at any time so as to flexibly unfold the plastic bag into a suitable tight state. The plastic bag is folded on the folding seat 2. In this process, the area of ​​the plastic bag to be folded is first pressed by the flattening mechanism. With the help of the electric push mechanism and the smoothing and wrinkle removal mechanism, the folding frame 7 can automatically fold the plastic bag while the area near the folding area of ​​the plastic bag is manually wrinkled.

[0018] Specifically, the electric push mechanism includes an electric push rod 8 fixedly installed on the device platform 1, and a shift plate 9 is fixedly connected to the output end of the electric push rod 8.

[0019] Through the above technical solution, the electric push rod 8 can simultaneously drive the rack 11 to move during the process of pushing and pulling the shift plate 9, allowing the rack 11 to slide laterally along the inner side of the guide rail seat 10.

[0020] Specifically, a guide rail seat 10 is fixedly installed on the device platform 1. A rack 11 is slidably connected to the inner side of the guide rail seat 10, and the outer surface of the rack 11 is fixedly connected to the outer surface of the shift plate 9. A gear 12 is fixedly connected to one end of the rotating shaft 5, and the outer surface of the gear 12 meshes with the outer surface of the rack 11.

[0021] Through the above technical solution, during the lateral sliding process, the rack 11 will drive the gear 12 that meshes with it to rotate, thereby driving the rotating shaft 5 to rotate synchronously.

[0022] Specifically, the wrinkle-smoothing and wrinkle-removing mechanism includes an inner sliding shaft 13 fixedly inserted inside the folded frame 7, and a spring 14 movably sleeved on the outer surface of the inner sliding shaft 13.

[0023] Through the above technical solution, as the wrinkle-removing plate 15 slides along the surface of the inner sliding shaft 13, it will compress the spring 14, thereby causing the spring 14 to deform.

[0024] Specifically, the outer surface of the inner sliding shaft 13 is slidably fitted with a wrinkle-removing plate 15, and the outer surface of the wrinkle-removing plate 15 is slidably connected to the inner side of the folded frame 7. A handle 16 is provided on the outer surface of the wrinkle-removing plate 15.

[0025] Through the above technical solution, the spring 14 is also in an energy storage state during the deformation process. When the handle 16 no longer applies force to the wrinkle removal plate 15, under the deformation and reset action of the spring 14, it can push the two sets of wrinkle removal plates 15 closer to each other and restore their original positions.

[0026] Specifically, the flattening mechanism includes an upper magnet 17 fixedly connected to the top of the inner side of the device platform 1, a lower magnet 18 fixedly installed at the bottom of the inner side of the device platform 1, and a pressing iron sheet 19 slidably connected to the inner side of the device platform 1.

[0027] With the above technical solution, when the plastic bag is not folded, the pressing iron sheet 19 is attracted to the upper magnet 17, and the plastic bag passes under the pressing iron sheet 19 during the process of unfolding between the two sets of rollers.

[0028] Working Principle: During use, the plastic bag is wound around the first roller 3 and the second roller 4 at both ends. The first roller 3 and the second roller 4 can rotate flexibly to unfold the plastic bag into a suitable taut state. As the first roller 3 and the second roller 4 rotate and cooperate to wind the plastic bag, the plastic bag passes under the pressing iron plate 19. When the part of the plastic bag that needs to be folded reaches directly under the pressing iron plate 19, the pressing iron plate 19 can be pushed down, causing it to disengage from the upper magnet 17. Under gravity, the pressing iron plate 19 slides down the inner side of the device platform 1 until it is attracted to the lower magnet 18. At this point, the pressing iron plate 19 tightly holds the plastic bag, and the entire plastic bag is in a bent state, with the part near the two sets of rollers tilted upwards and the part under the pressing iron plate 19 pressed downwards. Then, the electric push rod 8 can be activated to pull back the shifting plate 9. During the movement of the shifting plate 9, the rack 11 will be driven simultaneously. The rack 11 slides along the inner side of the guide rail seat 10, which drives the gear 12 during the lateral movement, causing the gear 12 to rotate. The rotating shaft 5 rotates synchronously, and the rotating shaft 5 drives the rotating frame 6 to flip during the rotation. During this process, the folding frame 7 can fold the plastic bag. When the plastic bag is folded on the folding seat 2, the folding seat 2 consists of the plastic bag, the pressing iron sheet 19, the plastic bag, and the folding frame 7 from bottom to top. The pressing iron sheet 19 between the plastic bags is the bending position of the plastic bag. After the folding is completed (a crease is pressed on the plastic bag), the two sets of handles 16 can be manually held and the two sets of wrinkle removal plates 15 can be moved in opposite directions. The two sets of wrinkle removal plates 15 slide away from each other along the surface of the inner sliding shaft 13. The movement of the two sets of wrinkle removal plates 15 can smooth the wrinkles near the folding edge of the plastic bag by the folding frame 7, thereby reducing the wrinkles at the folding edge of the plastic bag. The whole process does not require much manual intervention.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding device for producing plastic bags, comprising a device table (1), characterized in that: A folding seat (2) is fixedly installed on the device platform (1). A first roller (3) and a second roller (4) are rotatably connected to the inner side of the device platform (1). A rotating shaft (5) is rotatably connected to the inner surface of the device platform (1) through an electric push mechanism. A rotating frame (6) is fixedly sleeved on the outer surface of the rotating shaft (5). A folding frame (7) is fixedly connected to the outer surface of the rotating frame (6). A smoothing and wrinkle removal mechanism is provided on the folding frame (7). A flattening mechanism for pressing plastic bags is provided on the device platform (1).

2. The folding device for plastic bag production according to claim 1, characterized in that: The electric push mechanism includes an electric push rod (8) fixedly installed on the device platform (1), and the output end of the electric push rod (8) is fixedly connected to a shift plate (9).

3. The folding device for plastic bag production according to claim 2, characterized in that: A guide rail seat (10) is fixedly installed on the device platform (1). A rack (11) is slidably connected to the inner side of the guide rail seat (10), and the outer surface of the rack (11) is fixedly connected to the outer surface of the shift plate (9). A gear (12) is fixedly connected to one end of the rotating shaft (5), and the outer surface of the gear (12) meshes with the outer surface of the rack (11).

4. The folding device for plastic bag production according to claim 1, characterized in that: The smoothing and wrinkle-removing mechanism includes an inner sliding shaft (13) fixedly inserted inside the folded frame (7), and a spring (14) is movably sleeved on the outer surface of the inner sliding shaft (13).

5. A folding device for producing plastic bags according to claim 4, characterized in that: The outer surface of the inner sliding shaft (13) is slidably fitted with a wrinkle-removing plate (15), and the outer surface of the wrinkle-removing plate (15) is slidably connected to the inner side of the folded frame (7). The outer surface of the wrinkle-removing plate (15) is provided with a handle (16).

6. A folding device for producing plastic bags according to claim 1, characterized in that: The flattening mechanism includes an upper magnet (17) fixedly connected to the top of the inner side of the device platform (1), a lower magnet (18) fixedly installed at the bottom of the inner side of the device platform (1), and a pressing iron sheet (19) slidably connected to the inner side of the device platform (1).

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