High-speed narrow bag making equipment

Abstract

A high-speed narrow bag making device comprises a hot ironing assembly which comprises an upper hot knife set, a lower hot knife set and a cooling plate, the upper hot knife set and the lower hot knife set are each internally provided with two or more ironing heads, and the number of the ironing heads in the upper hot knife set is equal to that of the ironing heads in the lower hot knife set; the hot ironing positions of the upper hot knife group and the lower hot knife group on the plastic film are overlapped in the thickness direction of the plastic film, the number of the cooling plates is consistent with the number of the hot heads in the upper hot knife group or the lower hot knife group, and the cooling plates are used for cooling the hot ironing positions of the plastic film; and the quick cutter assembly is arranged at the tail of the feeding direction of the plastic film, and the quick cutter assembly is used for cutting the blanched position of the plastic film. Through the design, a plurality of hot ironing positions can be ironed out on a plastic film through one-time downward pressing of the hot ironing assembly, the rapid cutter conducts cutting at the constant-speed frequency, multi-cutting through one-time ironing is achieved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of bag making equipment, in particular to a high-speed narrow-band bag making equipment. Background Art

[0002] With the development of social production, the variety of commodities is becoming more and more diverse, and the demand for plastic packaging bags of various specifications is constantly increasing. In the bag-making process, there is a step of hot-stamping the double-layer raw material film to make the raw material film stick together, and then use the cutting component to cut the hot-stamped part to divide the raw material film into independent plastic packaging bags. In order to pursue the universality of bag-making equipment, most bag-making equipment manufacturers usually use the hot-stamping component and the cutting component in a way of hot-stamping and cutting. That is, the hot-stamping component is in front and the cutting component is in the back. Each time the raw material film is hot-stamped, it moves forward one station and the cutting component cuts downward once. This method is convenient for controlling the length of the cut plastic packaging bag.

[0003] The bag-making equipment of this structure has a defect. When producing relatively narrow plastic packaging bags (such as long instant coffee packaging bags), the production method of hot-stamping seriously limits the production efficiency. In addition, the hot-stamping component needs to maintain the temperature, and the hot-stamping component cannot perform high-frequency downward pressure hot-stamping. When the demand for narrow-band production is too large, it cannot meet the actual production needs. Therefore, it is necessary to provide a high-speed narrow-band bag-making equipment that can produce narrow bands quickly and efficiently. Utility Model Content

[0004] The utility model aims to provide a high-speed narrow-band bag-making equipment to solve the problem that the hot-scalding component and the cutting component of the conventional bag-making equipment usually cooperate in a way of one hot-scalding and one-cutting, that is, the hot-scalding component is in front and the cutting component is in the back, and the raw film moves forward one station each time it is hot-scalded, and the cutting component cuts downward once, which is convenient for controlling the length of the cut plastic packaging bag. The bag-making equipment of this structure has a defect that when producing relatively narrow plastic packaging bags (such as long strips of instant coffee packaging bags), the one-hot-scalding and one-cutting production method seriously limits the production efficiency, and cannot meet the technical problem of actual production needs when the demand for narrow-band production is too large.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A high-speed narrow bag making equipment, used for processing plastic film to produce narrow strips, comprising:

[0007] Hot-blanking assembly: The hot-blanking assembly comprises an upper hot-blanking knife group, a lower hot-blanking knife group and a cooling plate. The upper hot-blanking knife group contains two or more hot-blanking heads for hot-blanking the upper surface of the plastic film, and the lower hot-blanking knife group contains two or more hot-blanking heads for hot-blanking the lower surface of the plastic film. The number of hot-blanking heads in the upper hot-blanking knife group is equal to the number of hot-blanking heads in the lower hot-blanking knife group. The hot-blanking positions of the upper hot-blanking knife group and the lower hot-blanking knife group overlap in the thickness direction of the plastic film. The cooling plate is arranged at the downstream position of the upper hot-blanking knife group and the lower hot-blanking knife group along the feeding direction of the plastic film. The number of the cooling plates is consistent with the number of hot-blanking heads in the upper hot-blanking knife group or the lower hot-blanking knife group. The cooling plate is used to cool the hot-blanking position of the plastic film.

[0008] Fast cutter assembly: The fast cutter assembly is set at the end of the plastic film feeding direction, and the fast cutter assembly cuts the hot-scalded position of the plastic film. The hot-scalding assembly cannot increase the pressing frequency because it needs to maintain the temperature, but the cutter can achieve fast repeated cutting.

[0009] Through such a design, when producing narrow strips, the plastic film is fed with the length of an upper hot knife group or a lower hot knife group at one time. One downward pressure of the hot-stamping component can hot-stamp multiple hot-stamping positions of the plastic film, and the fast cutter cuts at a uniform frequency. Each time the plastic film moves forward, the hot-stamping component is pressed down only once, but the fast cutter can cut multiple times, thus achieving multiple cutting in one hot-stamping, which greatly improves work efficiency.

[0010] Furthermore, the upper ironing knife group is provided with one or two groups, the lower ironing knife group is provided with one or two groups, the upper ironing knife group and the lower ironing knife group are arranged alternately, and the ironing heads in the upper ironing knife group and the lower ironing knife group are evenly arranged and have equal interval lengths.

[0011] Furthermore, the upper ironing knife group includes two ironing heads and two upper ironing matching plates for cooperating with the ironing heads to iron the upper surface of the plastic film, and the lower ironing knife group includes two ironing heads and two lower ironing matching plates for cooperating with the ironing heads to iron the lower surface of the plastic film.

[0012] Furthermore, a sealing ironing knife group is also provided at the upstream position of the hot-blanking assembly along the feeding direction of the plastic film, and the sealing ironing knife group includes a sealing iron head and a sealing cooling plate in sequence along the feeding direction of the plastic film, and the sealing iron head and the sealing cooling plate are arranged in parallel with the feeding direction of the plastic film, and the sealing iron head and the sealing cooling plate cooperate to heat-seal one long side of the plastic film, and the length of the sealing iron head and the sealing cooling plate is consistent with the overall length of the upper ironing knife group or the lower ironing knife group in the feeding direction of the plastic film. With such a design, the plastic film is processed after being folded, and the long side of the folded plastic film is first heat-sealed, which can prevent the misalignment between the two layers of plastic film to a certain extent.

[0013] Furthermore, a cutting blade is provided between the sealing and ironing blade assembly and the hot ironing assembly, wherein one cutting blade is provided on each of the two long sides of the plastic film, and the cutting blade is used to neatly cut the long sides of the plastic film. With such a design, the produced narrow strip is more neat and beautiful.

[0014] Furthermore, it also includes a traction tensioning assembly 13, which is arranged between the cutting blade 12 and the hot stamping assembly, and is composed of two rollers 14 arranged side by side and a swing arm roller 22, wherein the swing arm roller 22 is arranged between the two rollers 14 and is rotatably connected to one of the rollers 14 through a connecting plate 23, and a gap is left between the rollers for the plastic film to pass through for tensioning. Through such a design, the tensioning force of the plastic film within a certain range of the traction tensioning assembly is ensured, and the swing arm roller can rotate around the roller to tension the plastic film.

[0015] Furthermore, an adaptive tensioning roller is included between the hot-scalding component and the fast-cutting knife component. The adaptive tensioning roller includes a swing arm and a concave-convex roller. There are five concave-convex rollers, three of which are evenly fixed side by side, and the other two are rolled and arranged side by side near the end of the swing arm. The other end of the swing arm is provided with a movable shaft. The swing arm can rotate with the movable shaft as the axis and press the plastic film on the plastic film by its own weight or cylinder to tighten the plastic film. Through such a design, the adaptive tensioning roller cooperates with the traction tensioning component, and the adaptive tensioning component can tighten the plastic film by its own weight.

[0016] Furthermore, the concave-convex roller includes ridges and a cylinder body, and a plurality of the ridge circumferential arrays are arranged on the cylinder body. With such a design, if the roller does not adopt the concave-convex roller design, then when the plastic film is pressed by the roller on the swing arm, due to the ductility of the plastic film itself and the radius difference between the two layers of plastic film and the roller, the plastic film on the side away from the roller will produce a greater deformation than the plastic film on the side close to the roller, and wrinkles will appear during subsequent cutting. The design of the concave-convex roller has the advantage of dispersing the position where the plastic film is deformed. Although it cannot avoid slight deformation of the plastic film, it can avoid serious deformation of the plastic film and wrinkles.

[0017] Furthermore, it also includes a traction roller group, which is provided between the cutting blade and the traction tensioning assembly, between the hot stamping assembly and the adaptive tensioning roller, and between the adaptive tensioning roller and the fast cutting knife assembly. The traction roller group is used to convey the plastic film. Through such a design, a group of traction rollers is provided at intervals to ensure the forward momentum of the plastic film.

[0018] The beneficial effects of the utility model are as follows: when producing narrow strips, the plastic film is fed with the length of an upper hot-stamping knife group at one time, and the hot-stamping component is pressed down once to hot-stamp the plastic film into multiple hot-stamping positions, and the fast cutter cuts at a uniform frequency. Each time the plastic film moves forward, the hot-stamping component is pressed down only once, but the fast cutter can cut multiple times, thus achieving multiple cutting in one hot-stamping, and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0021] Figure 3 This is a schematic diagram of the hot blanching component structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the adaptive tensioning roller of the utility model;

[0023] Figure 5 This is a schematic diagram of the concave-convex roller structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the quick cutter of the utility model;

[0025] Figure 7 It is a schematic diagram of the narrow band structure produced by the processing of the utility model;

[0026] Explanation of the marks in the figure: 1. Upper hot knife group; 2. Lower hot knife group; 3. Cooling plate; 4. Hot head; 5. Plastic film; 6. Quick cutter assembly; 7. Upper hot hot matching plate; 8. Lower hot hot matching plate; 9. Sealing hot knife group; 10. Sealing hot head; 11. Sealing cooling plate; 12. Cutting blade; 13. Traction tensioning assembly; 14. Roller; 15. Adaptive tensioning roller; 16. Swing arm; 17. Concave and convex roller; 18. Movable shaft; 19. Convex ridge; 20. Cylinder; 21. Traction roller group; 22. Swing arm roller; 23. Connecting plate. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] like Figures 1 to 7 shown.

[0029] The plastic film is conveyed forward continuously, and the feeding length of the plastic film at one time is equal to the length of the upper hot knife group or the lower hot knife group. For example, after the same section of plastic film is processed by the upper hot knife group, it can be conveyed to one station to cooperate with the position of the lower hot knife group, and the lower hot knife group can just heat the part that has been hotted by the upper hot knife group.

[0030] Example 1

[0031] A high-speed narrow bag making equipment for processing plastic film to produce narrow strips, comprising:

[0032] Hot-blanking assembly: The hot-blanking assembly comprises an upper hot-blanking knife group 1, a lower hot-blanking knife group 2 and a cooling plate. The upper hot-blanking knife group 1 contains two or more hot-blanking heads for hot-blanking the upper surface of the plastic film 5, and the lower hot-blanking knife group 2 contains two or more hot-blanking heads for hot-blanking the lower surface of the plastic film 5. The number of hot-blanking heads in the upper hot-blanking knife group 1 is equal to the number of hot-blanking heads in the lower hot-blanking knife group 2. The hot-blanking positions of the upper hot-blanking knife group 1 and the lower hot-blanking knife group 2 on the plastic film 5 overlap in the thickness direction of the plastic film 5. The cooling plate is arranged at the downstream position of the upper hot-blanking knife group 1 and the lower hot-blanking knife group 2 along the feeding direction of the plastic film 5. The number of the cooling plates is consistent with the number of hot-blanking heads in the upper hot-blanking knife group 1 or the lower hot-blanking knife group 2. The cooling plate is used to cool the hot-blanking position of the plastic film 5.

[0033] The implementation method of the above embodiment is: the upper ironing knife group 1 and the lower ironing knife group 2 perform hot stamping on the same position of the upper and lower surfaces of the plastic film 5. Since there are multiple hot stamping heads, a single downward pressure of the hot stamping assembly will form multiple hot stamping areas, and narrow strips can be produced by cutting the hot stamping areas.

[0034] Example 2

[0035] Quick cutter assembly 6: The quick cutter assembly 6 is arranged at the end of the feeding direction of the plastic film 5, and the quick cutter assembly 6 cuts the hot-scalded position of the plastic film 5.

[0036] The implementation method of the above embodiment is that the fast cutter assembly 6 cuts the plastic film 5 at a fast and uniform frequency, and the plastic film 5 also moves at a uniform speed, and they cooperate with each other to stably cut out narrow strips of uniform size.

[0037] Example 3

[0038] Furthermore, the upper ironing knife group 1 is provided with one or two groups, the lower ironing knife group 2 is provided with one or two groups, the upper ironing knife group 1 and the lower ironing knife group 2 are arranged alternately, and the ironing heads in the upper ironing knife group 1 and the lower ironing knife group 2 are evenly arranged and the interval lengths are equal.

[0039] The upper ironing knife group 1 includes two ironing heads and two upper ironing matching plates 7 for cooperating with the ironing heads to iron the upper surface of the plastic film 5, and the lower ironing knife group 2 includes two ironing heads and two lower ironing matching plates 8 for cooperating with the ironing heads to iron the lower surface of the plastic film 5.

[0040] The implementation method of the above embodiment is: there is no requirement for the front and back order of the upper ironing knife group 1 and the lower ironing knife group 2, but the number of ironing heads contained in each must be consistent, and the hot soup matching plate provides a matching position for the upper ironing knife group 1 or the lower ironing knife group 2 to heat.

[0041] Example 4

[0042] A sealing ironing knife group 9 is also provided at the upstream position of the hot stamping component along the feeding direction of the plastic film 5. The sealing ironing knife group 9 includes a sealing ironing head 10 and a sealing cooling plate 11 in sequence along the feeding direction of the plastic film 5. The sealing ironing head 10 and the sealing cooling plate 11 are arranged parallel to the feeding direction of the plastic film 5. The sealing ironing head 10 and the sealing cooling plate 11 cooperate to heat-seal one long side of the plastic film 5. The length of the sealing ironing head 10 and the sealing cooling plate 11 is consistent with the overall length of the upper ironing knife group 1 or the lower ironing knife group 2 in the feeding direction of the plastic film 5.

[0043] A cutting blade 12 is further arranged between the sealing and ironing knife group 9 and the hot ironing assembly. The cutting blade 12 is arranged one on each of the two long sides of the plastic film 5 . The cutting blade 12 is used to trim the long sides of the plastic film 5 neatly.

[0044] It also includes a traction and tensioning assembly 13, which is arranged between the cutting blade 12 and the blanching assembly. The traction and tensioning assembly 13 consists of two rollers 14 arranged side by side and a swing arm roller 22. The swing arm roller 22 is arranged between the two rollers 14 and is rotatably connected to one of the rollers 14 through a connecting plate 23. A gap is left between the rollers for the plastic film to pass through for tensioning.

[0045] The implementation method of the above embodiment is that the processing of the plastic film 5 by the sealing and hot-stamping knife group 9 and the cutting blade 12 is a pre-step for the plastic film 5 to be processed by the hot-stamping component, and the cutting blade 12 only cuts a part of the heat-sealed area when cutting the long side of the plastic film 5 heat-sealed by the sealing and hot-stamping knife group 9, and the remaining plastic film 5 is still adhered together.

[0046] The swing arm roller 22 can rotate around the roller 14 as an axis to tension the plastic film that is passed through.

[0047] Example 5

[0048] An adaptive tensioning roller 15 is also included between the hot stamping component and the fast cutting knife component 6. The adaptive tensioning roller 15 includes a swing arm 16 and a concave-convex roller 17. There are five concave-convex rollers 17, three of which are evenly fixed side by side, and the other two are rolled and arranged side by side at the end of the swing arm 16. A movable shaft 18 is provided at the other end of the swing arm 16. The swing arm 16 can rotate with the movable shaft 18 as the axis to press the concave-convex roller 17 on the swing arm 16 onto the plastic film 5 by its own weight or a cylinder (not shown in the figure) to tension the plastic film 5.

[0049] The concave-convex roller 17 includes convex ridges 19 and a cylinder body 20 , and a plurality of convex ridges 19 are arranged in a circumferential array on the cylinder body 20 .

[0050] In this embodiment, if the roller does not adopt the design of the concave-convex roller 17, then when the plastic film 5 is pressed by the roller on the swing arm, due to the ductility of the plastic film 5 itself and the radius difference between the two layers of plastic film 5 and the roller, the plastic film 5 on the side away from the roller will produce a larger deformation than the plastic film 5 on the side close to the roller, and wrinkles will appear during subsequent cutting. The design of the concave-convex roller 17 has the advantage of dispersing the positions where the plastic film 5 is deformed. Although it cannot avoid slight deformation of the plastic film 5, it can avoid severe deformation of the plastic film 5 and wrinkles.

[0051] Example 6

[0052] It also includes a traction roller group 21, which is arranged between the cutting blade 12 and the traction tensioning assembly 13, between the hot stamping assembly and the adaptive tensioning roller 15, and between the adaptive tensioning roller 15 and the fast cutting knife assembly 6. The traction roller group 21 is used to convey the plastic film 5.

[0053] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A high-speed narrow bag making device for processing plastic film (5) to produce narrow strips, characterized in that: include: Hot-stamping assembly: The hot-stamping assembly comprises an upper hot-stamping knife assembly (1), a lower hot-stamping knife assembly (2) and a cooling plate (3); the upper hot-stamping knife assembly (1) contains two or more hot-stamping heads (4) for hot-stamping the upper surface of a plastic film (5); the lower hot-stamping knife assembly (2) contains two or more hot-stamping heads (4) for hot-stamping the lower surface of a plastic film (5); the number of hot-stamping heads (4) in the upper hot-stamping knife assembly (1) is equal to the number of hot-stamping heads (4) in the lower hot-stamping knife assembly (2); the upper hot-stamping knife assembly (1) contains two or more hot-stamping heads (4) for hot-stamping the lower surface of a plastic film (5); (1) The hot-stamping position of the plastic film (5) overlaps with that of the lower hot-stamping knife group (2) in the thickness direction of the plastic film (5); the cooling plate (3) is arranged at a downstream position of the upper hot-stamping knife group (1) and the lower hot-stamping knife group (2) along the feeding direction of the plastic film (5); the number of the cooling plates (3) is consistent with the number of the hot-stamping heads (4) in the upper hot-stamping knife group (1) or the lower hot-stamping knife group (2); the cooling plate (3) is used to cool the hot-stamping position of the plastic film (5); Quick cutter assembly (6): the quick cutter assembly (6) is arranged at the end of the feeding direction of the plastic film (5), and the quick cutter assembly (6) cuts the hot-scalded position of the plastic film (5).

2. The high-speed narrow bag making equipment according to claim 1, characterized in that: The upper ironing knife group (1) is provided with one or two groups, and the lower ironing knife group (2) is provided with one or two groups. The upper ironing knife group (1) and the lower ironing knife group (2) are arranged alternately, and the ironing heads (4) in the upper ironing knife group (1) and the lower ironing knife group (2) are evenly arranged and have equal interval lengths.

3. The high-speed narrow bag making equipment according to claim 2, characterized in that: The upper ironing knife group (1) comprises two ironing heads (4) and two upper ironing matching plates (7) for cooperating with the ironing heads (4) to iron the upper surface of the plastic film (5), and the lower ironing knife group (2) comprises two ironing heads (4) and two lower ironing matching plates (8) for cooperating with the ironing heads (4) to iron the lower surface of the plastic film (5).

4. The high-speed narrow bag making equipment according to claim 1, characterized in that: A sealing ironing knife group (9) is also provided at an upstream position of the hot stamping component along the feeding direction of the plastic film (5); the sealing ironing knife group (9) is provided with a sealing ironing head (10) and a sealing cooling plate (11) in sequence along the feeding direction of the plastic film (5); the sealing ironing head (10) and the sealing cooling plate (11) are parallel to the feeding direction of the plastic film (5); the sealing ironing head (10) and the sealing cooling plate (11) cooperate to heat-seal a long side of the plastic film (5); the length of the sealing ironing head (10) and the sealing cooling plate (11) is consistent with the overall length of the upper ironing knife group (1) or the lower ironing knife group (2) in the feeding direction of the plastic film (5).

5. The high-speed narrow bag making equipment according to claim 4, characterized in that: A cutting blade (12) is also arranged between the sealing and ironing knife assembly (9) and the hot ironing assembly. One cutting blade (12) is arranged on each of the two long sides of the plastic film (5). The cutting blade (12) is used to neatly cut the long sides of the plastic film (5).

6. The high-speed narrow bag making equipment according to claim 1, characterized in that: It also comprises a traction tensioning assembly (13), the traction tensioning assembly (13) being arranged between the cutting blade (12) and the hot stamping assembly, the traction tensioning assembly (13) being composed of two rollers (14) arranged side by side and a swing arm roller (22), the swing arm roller (22) being arranged between the two rollers (14) and being rotatably connected to one of the rollers (14) via a connecting plate (23).

7. The high-speed narrow bag making equipment according to claim 1, characterized in that: An adaptive tensioning roller (15) is also included between the hot stamping component and the fast cutting knife component (6). The adaptive tensioning roller (15) includes a swing arm (16) and a concave-convex roller (17). There are five concave-convex rollers (17), three of which are evenly fixed side by side, and the other two are arranged side by side at the end of the swing arm (16) by rolling. A movable shaft (18) is provided at the other end of the swing arm (16). The swing arm (16) can rotate with the movable shaft (18) as the axis and press the concave-convex roller (17) on the swing arm (16) onto the plastic film (5) by its own weight or a cylinder to tension the plastic film (5).

8. The high-speed narrow bag making equipment according to claim 7, characterized in that: The concave-convex roller (17) comprises a convex ridge (19) and a cylinder body (20), wherein a plurality of convex ridges (19) are arranged in a circular array on the cylinder body (20).

9. The high-speed narrow bag making equipment according to claim 1, characterized in that: It also comprises a traction roller group (21), wherein one traction roller group (21) is respectively arranged between the cutting blade (12) and the traction tensioning assembly (13), between the hot stamping assembly and the adaptive tensioning roller (15), and between the adaptive tensioning roller (15) and the fast cutting knife assembly (6). The traction roller group (21) is used to convey the plastic film (5).

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