Integrated packaging bag processing equipment and processing method thereof

Abstract

The present invention provides an integrated packaging bag processing device and a processing method thereof. The processing device comprises a film material conveying device, a guide folding device, a side accordion conveying device, a hot pressing device, a baffle, a traction device, a folding device and a cutting device. The packaging bag is processed by the processing device to ensure that the upper film, the lower film and the bottom film of the packaging bag are an integrated structure, and there is no need to cut and splice the film material, which reduces the processing procedures, reduces the film material loss, and avoids the problem of poor firmness of the joints of the film materials on the packaging bag. During the processing, the film material and the side accordion can be uniformly folded, which ensures the consistency of the folding position and angle, improves the matching degree between the upper film, the lower film and the bottom film of the packaging bag, and the finished packaging bag can be obtained by direct shearing without secondary packaging, thereby improving the processing efficiency and reducing the difficulty of bag making operations.

Description

Technical Field

[0001] The present invention relates to the field of packaging bag processing, and in particular to processing equipment and a processing method of an integrated packaging bag. Background Art

[0002] Packaging bags are generally made of composite plastic film as the main material. They are named because of their square bottom. When unfolded, they are similar to a carton. The length, width and height can be different. They are "tailor-made" according to the different sizes of the products to be packaged. Packaging bags generally have 5 sides, upper film (front, same below) and lower film (back, same below), two side accordions (sides), and bottom film (bottom, same below). The unique structure of the packaging bag determines that it is more convenient to package three-dimensional goods or square products. This bag not only takes into account the packaging meaning of traditional plastic bags, but also fully expands the new packaging ideas.

[0003] Traditional packaging bag processing equipment processes at least two pieces of film materials to form the upper film, lower film and bottom film of the packaging bag. The upper film, lower film and bottom film of the packaging bag obtained by the equipment are independent split structures, or the lower film and the bottom film are integrated and separated from the upper film. Under this structure, the separation between the films is fastened by hot pressing, and the firmness and reliability of the hot pressing part are low, which can easily cause the bag body to rupture.

[0004] Therefore, technicians in this field are committed to developing a processing device and a processing method for an integrated packaging bag that enhances the firmness of the bag body. Summary of the invention

[0005] The object of the present invention is to provide an integrated packaging bag processing device and a processing method thereof, which can perform integrated processing on the packaging bag to avoid the problem of poor firmness at the joints of the various film materials on the packaging bag, and can also reduce the processing costs such as printing on the packaging bag and reduce the difficulty of bag making operations.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An integrated packaging bag processing equipment comprises a film material conveying device, a guide folding device, a side accordion conveying device, a hot pressing device, a pressing plate and a traction device; the film material conveying device is used to convey the packaging bag film material along the length direction of the packaging bag film material; the guide folding device is used to guide and fold the packaging bag film material along its length direction to form an upper film and a lower film of the packaging bag, and the folded film material forms a bending portion with a certain width at the folding position of the upper film and the lower film; the side accordion conveying device is arranged downstream of the guide folding device, in the width direction of the packaging bag film material, and conveys the side accordion along the width direction of the packaging bag film material to between the upper film and the lower film after the folding, and close to the bending portion; the hot pressing device is arranged Downstream of the side accordion conveying device, it is used to fix the side accordion located between the two pieces of film material, the upper film and the lower film, on the upper film and the lower film; the pressing plate includes a first pressing plate, a second pressing plate and a third pressing plate, wherein the first pressing plate and the second pressing plate are matched and arranged, and both are located downstream of the hot pressing device, and the upper film and the lower film after hot pressing are conveyed to between the first pressing plate and the second pressing plate for pressing; the third pressing plate is arranged on one side of the bending part and corresponds to the position of the bending part, and is used to apply a force to the bending part toward one side of the side accordion to form a bottom film of the packaging bag; a traction device is matched with the first pressing plate and the second pressing plate, and the traction device is arranged corresponding to the fixing position of the side accordion hot pressing, and is used to apply a force in a direction perpendicular to the film material to the bending part of the film material structure after hot pressing;

[0008] Correspondingly, a triangular ironing block is provided at the ironing head of the ironing device to ensure that there is an inward folding angle at the ironing fixing point of the side accordion and the film material, which conforms to the three-dimensional structure of the packaging bag;

[0009] Correspondingly, after the traction device pulls the film material after the spot ironing, the first pressing plate and the second pressing plate are used as the clamping reference, and a quadrilateral structure is formed in the longitudinal direction at the side accordion pulling position;

[0010] Correspondingly, the processing equipment further includes a turning-back device, which is arranged downstream of the third pressing plate and opposite to the setting position of the third pressing plate, and is used to turn back the part of the bottom film that is turned toward the lateral accordion after the third pressing plate applies force to the bending portion to form the bottom film;

[0011] Correspondingly, the processing equipment also includes a cutting device for cutting the packaging bag after the base film is formed to form an independent packaging bag body structure.

[0012] Based on the above processing equipment, a processing method for an integrated packaging bag is obtained, comprising the following steps:

[0013] 1) The film material conveying device conveys the film material along its length direction, and guides and folds the film material along its length direction through the guiding and folding device to form an upper film, a lower film and a bending portion of the film material;

[0014] 2) The film material being transported passes through the side accordion transport device, and the side accordion transport device transports the side accordion between the upper film and the lower film, and the side accordion is fixed on the upper film and the lower film by the hot pressing device;

[0015] 3) The film material continues to be transported through the first pressing plate and the second pressing plate, and the first pressing plate and the second pressing plate apply a pressing force to the upper film and the lower film in opposite directions, and the upper film, the lower mold and the side accordion are in a fitted state under the action of the pressing force;

[0016] 4) Under the action of the pressing force, the traction device applies a traction force perpendicular to the membrane material to the bending portion of the membrane material, and the bending portion opens upward and downward under the action of the traction force, thereby driving the side accordion port near the bending portion to open to form a quadrilateral structure;

[0017] 5) Under the dual effects of the pressing force and the pulling force, a folding force toward one side of the side organ is applied to the opened bending portion through the third pressing plate, so that the bending portion is folded toward one side of the side organ, and the end portion of the side organ where the quadrilateral structure is located is also folded;

[0018] 6) The traction force and the folding force are removed, and the folding device applies a pressing force to the bending portion and the folding part of the side accordion, so that the folded bending portion forms two symmetrical square folding surfaces, and the folding part of the side accordion forms two symmetrical triangular folding surfaces;

[0019] 6) The cutting device is used to cut along the midline of the triangular folded surface on the side accordion to obtain a packaging bag;

[0020] Correspondingly, in step 1), the distances between the side accordion and the bending portion of the membrane material are all equal;

[0021] Correspondingly, in step 1), the side accordion is fixed to the membrane material by spot-heating the edges on its diagonal lines, and the edges on each side accordion that are fixed to the membrane material by spot-heating are the same.

[0022] Correspondingly, in step 4), the direction of the folding force coincides with the transverse diagonal of the quadrilateral structure of the side accordion port. Under the action of the folding force, the two angles where the transverse diagonal is located are folded inward, and the two angles where the longitudinal diagonal perpendicular to the transverse diagonal is located form a vertex angle, and the surface where the vertex angle is located forms a triangular folding surface.

[0023] Based on the above processing equipment and processing method, an integrated packaging bag is obtained, the bag body structure of the packaging bag includes the upper film, the lower film, the bottom film and the side accordion, and the upper film, the lower film and the bottom film are an integrated structure.

[0024] The beneficial effects of the present invention are:

[0025] The use of the processing equipment and the processing method can ensure that the upper film, the lower film and the bottom film of the packaging bag are an integrated structure, there is no need to cut and splice the film material, the processing procedures are reduced, the film material loss is reduced, and the problem of poor firmness of the joints of the film materials on the packaging bag can be avoided. During the processing, the film material and the side accordion can be folded uniformly, the consistency of the folding position and angle is ensured, the coordination between the upper film, the lower film and the bottom film of the packaging bag is improved, and the finished packaging bag can be obtained by direct cutting without secondary packaging, thereby improving the processing efficiency and reducing the difficulty of bag making operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of guiding and folding the film material conveyed in the film material conveying device by using the guiding and folding device in step 1) of one embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of using a side accordion conveying device to convey a side accordion between two sheets of film materials, an upper film and a lower film, in step 2) of one embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of spot-heating and fixing the side accordion and the membrane material by a hot pressing device in step 3) of one embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the membrane material and the side organ under two forces of the first pressing plate and the second pressing plate and the traction force of the traction device on the bending portion in step 4) of an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of the third pressing plate applying a folding force to the bending portion and the side accordion in step 6) according to an embodiment of the present invention;

[0031] Figure 6 is a schematic diagram of the turning-back device applying a pressing force to the folded portion of the bending portion and the side accordion in step 7) according to an embodiment of the present invention;

[0032] Figure 7 It is a schematic diagram of the cutting device cutting along the midline of the triangular folded surface on the side accordion in step 8) of one embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of the separation structure of the packaging bag obtained by shearing in step 8) according to an embodiment of the present invention;

[0034] Fig. 9 is a schematic structural diagram of a finished packaging bag obtained by shearing in step 9) according to an embodiment of the present invention;

[0035] In the figure:

[0036] 1. Film material conveying device; 2. Guide folding device; 3. Side accordion conveying device; 4. Ironing device; 5. First pressing plate; 6. Second pressing plate; 7. Third pressing plate; 8. Traction device; 9. Folding device; 10. Film material; 11. Bending part; 12. Side accordion. DETAILED DESCRIPTION

[0037] like Figure 1-9 As shown, in one embodiment of the present invention, the processing equipment of the integrated packaging bag includes a film material conveying device 1, a guide folding device 2, a side accordion conveying device 3, a hot pressing device 4, a baffle, a traction device 8, a folding device 9 and a cutting device; the film material conveying device 1 is used to convey the packaging bag film material 10 along the length direction of the packaging bag film material 10; the guide folding device 2 is used to guide and fold the packaging bag film material 10 along its length direction to form two pieces of film material, the upper film and the lower film of the packaging bag, and the folded film material is on the upper film The side accordion conveying device 3 is arranged downstream of the guide folding device 2, in the width direction of the packaging bag film material 10, and conveys the side accordion 12 to between the folded upper and lower film sheets along the width direction of the packaging bag film material 10, and close to the bending portion 11; the ironing device 4, the ironing head of the ironing device 4 is set as a triangular ironing block, which is arranged downstream of the side accordion conveying device 3, and is used to iron and fix the side accordion 12 located between the upper and lower film sheets. The upper film and the lower film; the pressing plates include a first pressing plate 5, a second pressing plate 6 and a third pressing plate 7, wherein the first pressing plate 5 and the second pressing plate 6 are matched and arranged, and are both located downstream of the hot pressing device 4, and the upper film and the lower film after hot pressing are transported to the first pressing plate 5 and the second pressing plate 6 for pressing; the third pressing plate 7 is arranged on one side of the bending portion 11 and corresponds to the position of the bending portion 11, and is used to apply a force to the bending portion 11 toward the side of the side accordion 12 to form the bottom film of the packaging bag; the traction device 8 is matched with the first pressing plate 5 and the second pressing plate 6, and the traction device 8 is matched with the first pressing plate 5 and the second pressing plate 6. The guiding device 8 is arranged corresponding to the fixed position of the side accordion 12 for applying a force in a direction perpendicular to the film material 10 to the bending portion 11 of the film material 10 structure after the point ironing; the turning-back device 9 is arranged downstream of the third pressing plate 7 and opposite to the setting position of the third pressing plate 7, and is used for folding back the part of the bottom film folded toward the side of the side accordion 12 after the third pressing plate 7 applies force to the bending portion 11 to form the bottom film; the cutting device is used for cutting the packaging bag after the bottom film is formed to form an independent packaging bag body structure.

[0038] Based on the one-piece packaging bag processing equipment in this embodiment, the following processing method of the one-piece packaging bag is obtained:

[0039] 1) The film material conveying device 1 conveys the film material 10 along its length direction, and guides and folds the film material 10 along its length direction through the guiding and folding device 2 to form an upper film, a lower film and a bending portion 11 of the film material, as shown in FIG. Figure 1 As shown;

[0040] 2) The film material 10 being transported passes through the side accordion transport device 3, and the side accordion transport device 3 transports the side accordion 12 between the upper film and the lower film, and the placement position of the side accordion 12 is at an equal distance from the bending portion 11 of the film material 10, such as Figure 2 As shown;

[0041] 3) The ironing device 4 performs hot-stamping on one of the diagonal edges of the side accordion 12 and the upper and lower films, and the edges of each side accordion 12 that are hot-stamped on the upper and lower films are the same, wherein the edges refer to the edges on the quadrilateral structure as the symmetry axis, and a certain area on both sides of the symmetry axis is used as the hot-stamping area, such as Figure 3 As shown;

[0042] 4) The film material 10 that continues to be transported passes through the first pressing plate 5 and the second pressing plate 6. The first pressing plate 5 and the second pressing plate 6 apply a pressing force to the upper film and the lower film in opposite directions. Under the action of the pressing force, the upper film, the lower mold and the side accordion 12 are in a fitted state, as shown in FIG. Figure 4 As shown;

[0043] 5) Under the action of the pressing force, the traction device 8 applies a traction force perpendicular to the membrane material 10 to the bending portion 11 of the membrane material, and the bending portion 11 opens upward and downward under the action of the traction force, thereby driving the side accordion 12 port near the bending portion 11 to open to form a quadrilateral structure, such as Figure 4 As shown;

[0044] 6) Under the dual effects of the pressing force and the pulling force, a folding force toward the side of the side accordion 12 is applied to the opened bending portion 11 through the third pressing plate 7, and the folding force direction coincides with the transverse diagonal of the quadrilateral structure of the port of the side accordion 12, so that the bending portion 11 is folded toward the side of the side accordion. At the same time, the two angles where the transverse diagonal of the side accordion 12 is located are folded inward, and the two angles where the longitudinal diagonal perpendicular to the transverse diagonal are located form a vertex angle, and the surface where the vertex angle is located forms a triangular folding surface, such as Figure 5 As shown;

[0045] 7) Remove the traction force and the folding force, and the turning device 9 applies a pressing force to the folding part of the bending part 11 and the side accordion 12, so that the folded bending part 11 forms two symmetrical square folding surfaces, and the folding part of the side accordion 12 forms two symmetrical triangular folding surfaces, as shown in FIG. Figure 6 As shown;

[0046] 8) The cutting device is used to cut along the midline of the triangular folded surface of the side accordion 12, and a side accordion 12 is divided into two completely symmetrical parts, and the two parts serve as a side surface of two adjacent packaging bags, such as Figure 7 , 8 As shown;

[0047] 9) Get the packaging bag, such as Fig. 9 shown.

[0048] In addition, it should be understood that although the present specification is described in terms of implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for processing an integrated packaging bag is implemented based on an integrated packaging bag processing device, the integrated packaging bag processing device includes a film material conveying device, a guide folding device, a side accordion conveying device, a hot pressing device, a pressing plate and a traction device, wherein: A film material conveying device, used for conveying the packaging bag film material along the length direction of the packaging bag film material; The guiding folding device is used to guide and fold the packaging bag film material along its length direction to form two films of the packaging bag, the upper film and the lower film. After the folding, the film material forms a bending portion with a certain width at the folding position of the upper film and the lower film; The side accordion conveying device is arranged downstream of the guide folding device, in the width direction of the packaging bag film material, and conveys the side accordion along the width direction of the packaging bag film material to between the folded upper film and lower film and close to the bending part; The hot pressing device is arranged downstream of the side accordion conveying device, and is used to hot-fix the side accordion located between the upper film and the lower film to the upper film and the lower film; The pressing plate includes a first pressing plate, a second pressing plate and a third pressing plate, wherein the first pressing plate and the second pressing plate are matched and arranged, and are both located downstream of the hot pressing device, and the upper film and the lower film after hot pressing are transported to between the first pressing plate and the second pressing plate for pressing; the third pressing plate is arranged on one side of the bending portion and corresponds to the position of the bending portion, and is used to apply a force to the bending portion toward the side of the accordion to form the bottom film of the packaging bag; A traction device is matched with the first pressing plate and the second pressing plate, and the traction device is arranged corresponding to the fixed position of the side accordion hot spot, and is used to apply a force in a direction perpendicular to the film material to the bent portion of the film material structure after hot spot; The processing equipment also includes a turning-back device and a cutting device; It is characterized by comprising the following steps: 1) The film material conveying device conveys the film material along its length direction, and guides and folds the film material along its length direction through the guiding and folding device to form an upper film, a lower film and a bending portion of the film material; 2) The film material being transported passes through the side accordion transport device, and the side accordion transport device transports the side accordion between the upper film and the lower film, and the side accordion is fixed on the upper film and the lower film by the hot pressing device; 3) The film material continues to be transported through the first pressing plate and the second pressing plate, and the first pressing plate and the second pressing plate apply a pressing force to the upper film and the lower film in opposite directions, and the upper film, the lower mold and the side accordion are in a fitted state under the action of the pressing force; 4) Under the action of the pressing force, the traction device applies a traction force perpendicular to the membrane material to the bending portion of the membrane material, and the bending portion opens upward and downward under the action of the traction force, thereby driving the side accordion port near the bending portion to open to form a quadrilateral structure; 5) Under the dual effects of the pressing force and the pulling force, a folding force toward one side of the side organ is applied to the opened bending portion through the third pressing plate, so that the bending portion is folded toward one side of the side organ, and the end portion of the side organ where the quadrilateral structure is located is also folded; 6) The traction force and the folding force are removed, and the folding device applies a pressing force to the bending portion and the folding part of the side accordion, so that the folded bending portion forms two symmetrical square folding surfaces, and the folding part of the side accordion forms two symmetrical triangular folding surfaces; 7) The cutting device is used to cut along the midline of the triangular folded surface on the side accordion to obtain a packaging bag.

2. The method for processing an integrated packaging bag according to claim 1, characterized in that: In step 1), the distances between the side accordions and the bending parts of the membrane material are all equal.

3. The method for processing an integrated packaging bag according to claim 1, characterized in that: In step 1), the side accordion is fixed to the membrane material by spot-heating the edges on its diagonal lines, and the edges on each side accordion that are fixed to the membrane material by spot-heating are the same.

4. The method for processing an integrated packaging bag according to claim 1, characterized in that: In step 4), the direction of the folding force coincides with the transverse diagonal of the quadrilateral structure of the side accordion port. Under the action of the folding force, the two angles where the transverse diagonal is located are folded inward, and the two angles where the longitudinal diagonal perpendicular to the transverse diagonal is located form a vertex angle, and the surface where the vertex angle is located forms a triangular folding surface.

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