Packaging bag hemming and cutting device

Abstract

The utility model relates to a packaging bag hemming and cutting device which comprises a rack, a sewing machine and an edge sealing assembly, and a conveying belt used for conveying packaging bags is arranged above the rack; the sewing machine is connected with the rack, located at one end of the conveying belt and used for hemming the end of the packaging bag; the edge sealing assembly comprises a hot pressing piece and a sealing piece used for wrapping the end of the packaging bag with an edge sealing strip, the sealing piece is connected with the rack and located on one side of the transmission belt, and hot melt adhesive is arranged on the side, facing the packaging bag, of the edge sealing strip. The hot-pressing piece is connected with the rack, located on one side of the transmission belt and used for heating the edge sealing strip wrapping the end of the packaging bag. The packaging bag edge sealing strip has the advantages that the hot melt adhesive is arranged in the edge sealing strip, after the edge sealing strip wraps the end of the packaging bag, the edge sealing strip is heated, then the edge sealing strip and the packaging bag are bonded, and therefore the risk that the edge sealing effect is affected due to the fact that impurities adhere to an adhesive layer is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of packaging bag processing, and in particular to a packaging bag seam cutting device. Background Art

[0002] The packaging bag seam cutting device is a mechanical device specially used to cut the seam or excess part of the packaging bag, which is commonly found in packaging production lines. Its main function is to improve production efficiency and ensure that the packaging bags are neat and beautiful.

[0003] In the prior art, there is an automatic edge sealing and cutting device for packaging bags, comprising a workbench, on which are arranged a conveying transmission mechanism, a gluing mechanism, an edge band clamping mechanism and a sealing mechanism; when working, the conveying transmission mechanism drives the packaging belt forward, and at the same time the gluing mechanism glues the end of the packaging bag, and then the conveying transmission mechanism is energized to drive the packaging bag to continue moving forward, so that the end of the packaging bag reaches the vicinity of the edge band clamping mechanism, at which time the end of the packaging bag is located in the middle of the edge band, and the edge band seals the packaging bag.

[0004] With regard to the above-mentioned related technologies, during the period between the gluing and the edge sealing of the packaging bag, there is a risk of impurities adhering to the glue layer, which may affect the edge sealing effect. Utility Model Content

[0005] In order to reduce the risk of impurities adhering to the adhesive layer and affecting the edge sealing effect, the present application provides a packaging bag seam cutting device.

[0006] The present application provides a packaging bag seam cutting device that adopts the following technical solution:

[0007] A packaging bag seam cutting device, comprising:

[0008] A frame, wherein a conveyor belt for transporting packaging bags is provided above the frame;

[0009] A sewing machine, the sewing machine is connected to the frame, the sewing machine is located at one end of the conveyor belt and is used to perform hem processing on the end of the packaging bag;

[0010] An edge sealing assembly, the edge sealing assembly includes a hot pressing piece and a sealing piece used to wrap the edge sealing strip around the end of the packaging bag, the sealing piece is connected to a frame and is located on one side of a transmission belt, and a hot melt adhesive is provided on the side of the edge sealing strip facing the packaging bag; the hot pressing piece is connected to a frame and is located on one side of the transmission belt, and is used to heat the edge sealing strip wrapped around the end of the packaging bag.

[0011] By adopting the above technical solution, when the device is working, the packaging bag is transported to the sewing machine via the conveyor belt for hemming processing, and then the packaging bag is transported to the vicinity of the sealing piece via the conveyor belt. The sealing piece wraps the edge banding strip around the end of the packaging bag, and then the hot pressing piece heats the edge banding strip to make the edge banding strip and the packaging bag tightly bonded to complete the edge sealing; by arranging hot melt adhesive inside the edge banding strip, after the edge banding strip is wrapped around the end of the packaging bag, the edge banding strip is heated to make the edge banding strip and the packaging bag bonded, thereby reducing the risk of impurities adhering to the adhesive layer and affecting the edge sealing effect.

[0012] Optionally, the sealing member includes a folding plate and the folding plate is connected to the frame. The extension direction of the folding plate is parallel to the conveying direction of the conveyor belt. The folding plate includes a first folding plate and a second folding plate. There is an angle between the first folding plate and the second folding plate, and the angle gradually decreases along the conveying direction of the conveyor belt. The edge sealing strip is gradually wrapped around the end of the packaging bag through the angle between the first folding plate and the second folding plate.

[0013] By adopting the above technical solution, during the process of the edge sealing strip wrapping the end of the packaging bag, the packaging bag passes through the angle between the first folding plate and the second folding plate under the action of the conveyor belt, and the angle between the first folding plate and the second folding plate gradually decreases so that the edge sealing strip can smoothly pass through the folding plate and fit tightly to the end of the packaging bag.

[0014] Optionally, a turntable rotatably connected to the frame is provided on one side of the conveyor belt, a rotating shaft is provided on one side of the turntable, the edge banding strip is wound around the outside of the rotating shaft, and the axis of the rotating shaft coincides with the rotation center axis of the turntable.

[0015] By adopting the above technical solution, when the packaging bag is transported on the conveyor belt, the turntable rotates around the axis of the shaft, and then the edge banding strip separates from the shaft and enters between the angles of the first folding plate and the second folding plate to cover the end of the packaging bag.

[0016] Optionally, a cutting piece connected to the frame is provided on the side of the edge sealing assembly facing away from the sewing machine, and the cutting piece is used to cut the edge sealing strips between two adjacent packaging bags on the conveyor belt.

[0017] By adopting the above technical solution, after the end of the packaging bag is covered by the edge strip, the cutting piece cuts the edge strip between two adjacent packaging bags on the conveyor belt.

[0018] Optionally, the cutting piece includes a cutting roller, the extension direction of the rotating axis of the cutting roller is parallel to the plane of the conveyor belt and perpendicular to the conveying direction of the conveyor belt, and the packaging bag contacts the outer wall of the cutting roller after contacting the hot pressing plate, and the outer wall of the cutting roller is provided with a cutting blade.

[0019] By adopting the above technical solution, after the end of the packaging bag is covered with the edge strip, the cutting roller contacts the surface of the packaging bag. When the edge strip between two adjacent packaging bags is located below the cutting roller, the cutting blade on the outer wall of the cutting roller abuts against the edge strip, thereby cutting the edge strip between the two adjacent packaging bags.

[0020] Optionally, the hot pressing part includes a hot pressing plate, which is located on the side of the conveyor belt facing away from the ground and the plane where the hot pressing plate is located is parallel to the plane where the conveyor belt is located, and the hot pressing plate is connected to a heating element that transfers heat to the hot pressing plate.

[0021] By adopting the above technical solution, the end of the packaging bag is covered by the edge banding strip and then conveyed to the bottom of the hot pressing plate, and the hot pressing plate heats the edge banding strip so that the edge banding strip and the packaging bag are bonded.

[0022] Optionally, a flattening roller connected to the frame is provided on the side of the hot pressing piece facing away from the sealing piece, and the extension direction of the rotating axis of the flattening roller is parallel to the plane of the conveyor belt and perpendicular to the conveying direction of the conveyor belt. After the packaging bag contacts the hot pressing plate, it abuts against the outer wall of the flattening roller.

[0023] By adopting the above technical solution, after the hot pressing plate heats the edge banding strip, the packaging bag abuts against the outer wall of the flattening roller, and under the rolling action of the flattening roller, the edge banding strip fits more smoothly on the packaging bag.

[0024] Optionally, the flattening roller is made of metal and is connected to a cooling component.

[0025] By adopting the above technical solution, during the process of the packaging bag abutting against the outer wall of the flattening roller, the cooling component cools the flattening roller, and then the flattening roller cools the edge banding strip, thereby accelerating the solidification speed of the hot melt adhesive, so that the edge banding strip is more firmly bonded to the packaging bag during the transportation of the packaging bag.

[0026] Optionally, a blanking piece is provided on the side of the conveyor belt facing away from the sewing machine, and the blanking piece is used to stack the processed packaging bags on one side of the frame.

[0027] By adopting the above technical solution, the packaging bags with edge sealing are stacked on one side of the frame through the unloading piece.

[0028] Optionally, the unloading part includes a unloading plate located at one end of the conveyor belt, the plane where the unloading plate is located is perpendicular to the plane where the conveyor belt is located and the height of the unloading plate is lower than the plane where the conveyor belt is located, and a rotating shaft is provided at the end of the unloading plate away from the conveyor belt, the extension direction of the rotating shaft is parallel to the plane where the conveyor belt is located, and one end of the rotating shaft is connected to a rotating motor for driving the rotating shaft to rotate around its own axis.

[0029] By adopting the above technical solution, after the packaging bag reaches the end of the conveyor belt away from the sewing machine, the rotating motor drives the unloading plate to rotate around the rotating shaft, and the unloading plate drives the packaging bag that is about to leave the conveyor belt to be stacked on one side of the frame.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By placing hot melt adhesive inside the edge band, wrapping the edge band around the end of the packaging bag, and then heating the edge band to bond the edge band to the packaging bag, the risk of impurities adhering to the adhesive layer and affecting the edge banding effect is reduced;

[0032] 2. During the process of the edge band wrapping the end of the packaging bag, the packaging bag passes through the angle between the first folding plate and the second folding plate under the action of the conveyor belt, and the angle between the first folding plate and the second folding plate gradually decreases so that the edge band can smoothly pass through the folding plate and fit tightly to the end of the packaging bag;

[0033] 3. When the packaging bag is transported on the conveyor belt, the turntable rotates around the axis of the shaft, and then the edge strip separates from the shaft and enters between the angles of the first folding plate and the second folding plate to cover the end of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0035] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A.

[0036] Figure 3 It is a front view of an embodiment of the present application.

[0037] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part B.

[0038] In the figure: 1. frame; 2. conveyor belt; 3. sewing machine; 4. packaging bag; 5. edge banding strip; 6. edge banding assembly; 61. sealing member; 611. folding plate; 6111. first folding plate; 6112. second folding plate; 612. turntable; 613. rotating shaft; 62. hot pressing member; 621. hot pressing plate; 622. heating element; 63. cutting member; 631. cutting roller; 632. cutting blade; 64. flattening roller; 65. cooling member; 7. blanking member; 71. blanking plate; 72. rotating shaft; 73. rotating motor. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-4 This application is described in further detail.

[0040] The present application embodiment provides a packaging bag seam cutting device, referring to Figure 1 and Figure 2 A packaging bag 4 edge cutting device includes a frame 1, a conveyor belt 2 is arranged above the frame 1, an edge sealing assembly 6 connected to the frame 1 is arranged on one side of the conveyor belt 2, and a sewing machine 3 is arranged at one end of the conveyor belt 2. The conveyor belt 2 is used to transfer the packaging bag 4 from the sewing machine 3 to the edge sealing assembly 6 for edge sealing. The sewing machine 3 is connected to the frame 1 and is used to sew the end of the packaging bag 4 to enhance its firmness and aesthetics.

[0041] Reference Figure 1 and Figure 2 The edge sealing assembly 6 includes a hot press 62 and a sealing member 61. The sealing member 61 is connected to the frame 1. The sealing member 61 is located on one side of the conveyor belt 2 and is used to wrap the edge strip 5 around the end of the packaging bag 4. The side of the edge strip 5 facing the packaging bag 4 is coated with hot melt adhesive so as to be bonded to the packaging bag 4. The hot press 62 is also connected to the frame 1 and is located on one side of the conveyor belt 2. The hot press 62 is used to heat the edge strip 5 wrapped around the end of the packaging bag 4 to melt the hot melt adhesive and ensure that the edge strip 5 is tightly bonded to the packaging bag 4. The side of the edge sealing assembly 6 facing away from the sewing machine 3 is provided with a cutting member 63 connected to the frame 1. The cutting member 63 is used to cut the edge strip 5 between two adjacent packaging bags 4 on the conveyor belt 2. The side of the conveyor belt 2 facing away from the sewing machine 3 is provided with a feeding member 7 for stacking the processed packaging bags 4 on one side of the frame 1.

[0042] During specific implementation, the packaging bag 4 is transported to the sewing machine 3 via the conveyor belt 2 for edge processing, and then transported to the edge sealing assembly 6. At the edge sealing assembly 6, the sealing piece 61 covers the edge sealing strip 5 on the end of the packaging bag 4 (the covering process and the packaging bag in the covered state are not shown in the figure), and then the hot pressing piece 62 heats the edge sealing strip 5 to make it tightly bonded to the packaging bag 4 to complete the edge sealing process, and then the cutting piece 63 cuts the edge sealing strip 5 between two adjacent packaging bags 4 on the conveyor belt 2. After cutting is completed, the packaging bag 4 is transported to the end of the conveyor belt 2 away from the sewing machine 3, and then the unloading piece 7 stacks the processed packaging bags 4 on one side of the frame 1.

[0043] Reference Figure 1 and Figure 2The sealing member 61 includes a folding plate 611, which is connected to the frame 1, and the extension direction of the folding plate 611 is parallel to the transport direction of the conveyor belt 2. The folding plate 611 is composed of a first folding plate 6111 and a second folding plate 6112, and there is a certain angle between the two, and the angle gradually decreases along the transport direction of the conveyor belt 2. Under the action of the conveyor belt 2, the packaging bag 4 passes through the angle between the first folding plate 6111 and the second folding plate 6112, and the angle between the first folding plate 6111 and the second folding plate 6112 gradually decreases, so that the edge strip 5 can smoothly pass through the folding plate 611 and fit tightly to the end of the packaging bag 4. In order to better control the supply of the edge strip 5, a turntable 612 is provided on one side of the conveyor belt 2, and the turntable 612 is rotatably connected to the frame 1. A rotating shaft 613 is provided on one side of the turntable 612, and the edge strip 5 is wound around the outer side of the rotating shaft 613. The axis of the rotating shaft 613 coincides with the central axis of rotation of the rotating disk 612 . When the rotating disk 612 rotates, it can drive the rotating shaft 613 and the edge banding strip 5 wound thereon to rotate together, thereby realizing continuous supply of the edge banding strip 5 .

[0044] Reference Figure 3 and Figure 4 The cutting piece 63 is connected to the frame 1 and is located on the side of the edge banding assembly 6 away from the sewing machine 3. The cutting piece 63 includes a cutting roller 631, and the extending direction of the rotating shaft 72 of the cutting roller 631 is parallel to the plane where the conveyor belt 2 is located and perpendicular to the conveying direction of the conveyor belt 2. When the packaging bag 4 contacts the hot pressing plate 621, it will contact the outer wall of the cutting roller 631. The outer wall of the cutting roller 631 is provided with a cutting blade 632, which can quickly and accurately cut the edge banding strip 5, thereby cutting the edge banding strip 5 and the sewing line.

[0045] Reference Figure 1 and Figure 2The hot pressing part 62 includes a hot pressing plate 621, which is located on the side of the conveyor belt 2 away from the ground, and the plane where the hot pressing plate 621 is located is parallel to the plane where the conveyor belt 2 is located. The hot pressing plate 621 is connected to a heating element 622, which can transfer heat to the hot pressing plate 621 to make it reach a suitable working temperature, thereby heating the edge banding strip 5. In order to ensure the flatness and beauty of the edge banding effect, a flattening roller 64 is also provided on the side of the hot pressing part 62 away from the sealing part 61. The flattening roller 64 is connected to the frame 1, and the extension direction of its rotating shaft 72 is also parallel to the plane where the conveyor belt 2 is located and perpendicular to the conveying direction of the conveyor belt 2. When the packaging bag 4 contacts the hot pressing plate 621, it will abut against the outer wall of the flattening roller 64. Under the rolling action of the flattening roller 64, the edge banding strip 5 is more evenly attached to the packaging bag 4. When the packaging bag 4 abuts against the outer wall of the flattening roller 64, the cooling element 65 cools the flattening roller 64, and then the flattening roller 64 cools the edge strip 5, thereby accelerating the solidification speed of the hot melt adhesive, so that the edge strip 5 is more firmly bonded to the packaging bag 4 during the transportation of the packaging bag 4.

[0046] Reference Figure 1 The blanking member 7 includes a blanking plate 71, which is located at the end of the conveyor belt 2 away from the sewing machine 3. The plane where the blanking plate 71 is located is perpendicular to the plane where the conveyor belt 2 is located, and the height of the blanking plate 71 is lower than the plane where the conveyor belt 2 is located. The end of the blanking plate 71 away from the conveyor belt 2 is provided with a rotating shaft 72, and the extension direction of the rotating shaft 72 is parallel to the plane where the conveyor belt 2 is located. One end of the rotating shaft 72 is connected to a rotating motor 73, which is used to drive the rotating shaft 72 to rotate around its own axis. After the packaging bag 4 reaches the end of the conveyor belt 2 away from the sewing machine 3, the rotating motor 73 drives the blanking plate 71 to rotate around the rotating shaft 72, and the blanking plate 71 drives the packaging bag 4 that is about to leave the conveyor belt 2 to be stacked on one side of the frame 1.

[0047] The implementation principle of a packaging bag edge cutting device in the embodiment of the present application is as follows: when the device is working, the device is first started, the conveyor belt 2 starts to run, and the packaging bags 4 to be processed are continuously transported to the sewing machine 3 for edge sewing. After the edge sewing is completed, the packaging bag 4 continues to be conveyed to the vicinity of the sealing member 61, and the sealing member 61 covers the edge banding strip 5 on the end of the packaging bag 4. Then, the hot pressing plate 621 in the hot pressing member 62 is heated under the action of the heating element 622, and the edge banding strip 5 is heated to melt the hot melt adhesive on one side of the edge banding strip 5 and tightly adhere to the packaging bag 4. Subsequently, the flattening roller 64 rolls the edge banding strip 5 to ensure that the edge is flat and free of bubbles. After the packaging bag 4 passes through the edge sealing assembly 6, the cutting blade 632 on the cutting roller 631 cuts off the edge banding strip 5 between two adjacent packaging bags 4 to complete the cutting action. After the packaging bag 4 reaches the end of the conveyor belt 2 away from the sewing machine 3, the rotating motor 73 drives the unloading plate 71 to rotate around the rotating shaft 72, and the unloading plate 71 drives the packaging bag 4 that is about to leave the conveyor belt 2 to be stacked on one side of the frame 1 during the whole process; by arranging hot melt adhesive inside the edge banding strip 5, after the edge banding strip 5 is wrapped around the end of the packaging bag 4, the edge banding strip 5 is heated and then bonded to the packaging bag 4, thereby reducing the risk of impurities adhering to the adhesive layer and affecting the edge sealing effect.

[0048] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A packaging bag seam cutting device, characterized in that: include: A frame (1), wherein a conveyor belt (2) for transporting packaging bags (4) is provided above the frame (1); A sewing machine (3), the sewing machine (3) being connected to the frame (1), the sewing machine (3) being located at one end of the conveyor belt (2) and being used for performing hem processing on the end of the packaging bag (4); An edge sealing component (6), the edge sealing component (6) comprising a hot pressing component (62) and a sealing component (61) for wrapping an edge sealing strip (5) around an end of a packaging bag (4), the sealing component (61) being connected to a frame (1) and being located on one side of a transmission belt, and a hot melt adhesive being provided on a side of the edge sealing strip (5) facing the packaging bag (4); the hot pressing component (62) being connected to a frame (1) and being located on one side of a transmission belt, and being used for heating the edge sealing strip (5) wrapped around the end of the packaging bag (4).

2. A packaging bag seam cutting device according to claim 1, characterized in that: The sealing member (61) comprises a folding plate (611) and the folding plate (611) is connected to the frame (1); the extension direction of the folding plate (611) is parallel to the transport direction of the conveyor belt (2); the folding plate (611) comprises a first folding plate (6111) and a second folding plate (6112); an angle is formed between the first folding plate (6111) and the second folding plate (6112), and the angle gradually decreases along the transport direction of the conveyor belt (2); the edge sealing strip (5) gradually wraps around the end of the packaging bag (4) through the angle formed between the first folding plate (6111) and the second folding plate (6112).

3. A packaging bag seam cutting device according to claim 2, characterized in that: A turntable (612) rotatably connected to the frame (1) is provided on one side of the conveyor belt (2), a rotating shaft (613) is provided on one side of the turntable (612), the edge banding strip (5) is wound around the outside of the rotating shaft (613), and the axis of the rotating shaft (613) coincides with the rotation center axis of the turntable (612).

4. A packaging bag seam cutting device according to claim 3, characterized in that: A cutting piece (63) connected to the frame (1) is provided on the side of the edge sealing component (6) facing away from the sewing machine (3), and the cutting piece (63) is used to cut the edge sealing strips (5) between two adjacent packaging bags (4) on the conveyor belt (2).

5. A packaging bag seam cutting device according to claim 4, characterized in that: The cutting piece (63) comprises a cutting roller (631), the rotation axis (72) of the cutting roller (631) extending in a direction parallel to the plane of the conveyor belt (2) and perpendicular to the conveying direction of the conveyor belt (2), the packaging bag (4) contacts the outer wall of the cutting roller (631) after contacting the hot pressing plate (621), and the outer wall of the cutting roller (631) is provided with a cutting blade (632).

6. A packaging bag seam cutting device according to claim 1, characterized in that: The hot pressing member (62) comprises a hot pressing plate (621), the hot pressing plate (621) being located on a side of the conveyor belt (2) facing away from the ground, and the plane where the hot pressing plate (621) is located is parallel to the plane where the conveyor belt (2) is located, and the hot pressing plate (621) is connected to a heating element (622) for transferring heat to the hot pressing plate (621).

7. A packaging bag seam cutting device according to claim 6, characterized in that: A flattening roller (64) connected to the frame (1) is provided on the side of the hot pressing piece (62) facing away from the sealing piece (61); the extension direction of the rotating shaft (72) of the flattening roller (64) is parallel to the plane where the conveyor belt (2) is located and perpendicular to the conveying direction of the conveyor belt (2); and the packaging bag (4) abuts against the outer wall of the flattening roller (64) after contacting the hot pressing plate (621).

8. A packaging bag seam cutting device according to claim 7, characterized in that: The flattening roller (64) is made of a metal material and is connected to a temperature reducing component (65).

9. The packaging bag seam cutting device according to claim 1, characterized in that: A material removal piece (7) is provided on the side of the conveyor belt (2) facing away from the sewing machine (3), and the material removal piece (7) is used to stack the processed packaging bags (4) on one side of the conveyor belt (2).

10. A packaging bag seam cutting device according to claim 9, characterized in that: The blanking member (7) comprises a blanking plate (71) located at one end of the conveyor belt (2); the plane on which the blanking plate (71) is located is perpendicular to the plane on which the conveyor belt (2) is located and the height of the blanking plate (71) is lower than the plane on which the conveyor belt (2) is located; the end of the blanking plate (71) away from the conveyor belt (2) is provided with a rotating shaft (72); the extending direction of the rotating shaft (72) is parallel to the plane on which the conveyor belt (2) is located; one end of the rotating shaft (72) is connected to a rotating motor (73) for driving the rotating shaft (72) to rotate around its own axis.

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