Packaging bag film heat pressing structure and bag making machine

Abstract

This utility model belongs to the field of packaging bag manufacturing technology, and discloses a packaging bag film heat-sealing structure and a bag making machine, including: a frame for supporting the heat-sealing structure; a heat-sealing mechanism installed on the frame for partially heat-sealing the packaging bag film; and a heat insulation mechanism disposed adjacent to the heat-sealing mechanism, including at least a heat insulation film take-up and untake-down device, which transports the heat insulation film to the packaging bag film above the heat-sealing mechanism to form a heat-sealing heat insulation layer between the packaging bag film and the heat-sealing mechanism, avoiding direct contact and adhesion between the heat-sealing mechanism and the packaging bag film. This solution adds a heat insulation film take-up and untake-down device to a conventional bag making machine, forming a non-stick layer between the packaging bag film and the heat-sealing mechanism. While not affecting the heat-sealing effect, it prevents the heat-sealing blade from sticking to the film during heat sealing, thus preventing tearing of the heat-sealed portion and effectively ensuring the bag forming effect.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag preparation technology, and in particular to the hot pressing structure of packaging bag film and bag making machine. Background Technology

[0002] Packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. They are widely used in daily life and industrial production. Current packaging bag manufacturing processes require a heat-sealing process to partially seal the bag's structure. However, the heat from the heat-sealing blade causes the film material to melt to a certain extent, resulting in "blade sticking." This leads to unstable bag production or poor appearance at the heat-sealed area, hindering mass production and widespread adoption. Utility Model Content

[0003] The purpose of this utility model is to provide a hot-pressing structure for packaging bag film and a bag making machine. By adding a heat insulation structure to the hot-pressing structure, the film material can be prevented from sticking to the hot-pressing blade.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The hot-pressing structure of the packaging bag film includes:

[0006] The frame is used to support the hot pressing structure;

[0007] A heat sealing mechanism, mounted on the frame, is used to locally heat seal the packaging bag film.

[0008] A heat insulation mechanism is provided adjacent to the hot-sealing mechanism and includes at least a heat insulation film receiving and dispensing device. The heat insulation film is conveyed to the packaging bag film at the hot-sealing mechanism to form a heat-sealing heat insulation layer between the packaging bag film and the hot-sealing mechanism, thereby preventing the hot-sealing mechanism from directly contacting the packaging bag film and causing adhesion.

[0009] As an optional solution for the hot-pressing structure of the packaging bag film, one embodiment of the heat insulation film unwinding device can be a separate structure. The separate heat insulation film unwinding device includes a heat insulation film unwinding device and a heat insulation film winding device. In this embodiment, the heat insulation film unwinding device is located between the main film unwinding device of the packaging bag film and the hot-pressing mechanism of the first hot-pressing station; the heat insulation film winding device is located at the rear end of the hot-pressing mechanism of the last hot-pressing station, forming a unified unwinding and winding of the heat insulation film in the overall process of the hot-pressing mechanism.

[0010] As an optional solution for the hot-pressing structure of packaging bag film, the hot-pressing mechanism located at the first hot-pressing station and the last hot-pressing station can be a longitudinal hot-pressing mechanism or a transverse hot-pressing mechanism.

[0011] As an optional solution for the hot-pressing structure of the packaging bag film, both the heat insulation film unwinding device and the heat insulation film winding device have film rollers, tension control mechanisms, and traction guide rollers. The film rollers of the heat insulation film unwinding device convey the heat insulation film into the traction guide rollers. After the tension of the heat insulation film during the conveying process is controlled by the tension control mechanism, it is pulled by the traction guide rollers to the top of the packaging bag film at the hot-pressing mechanism, and then to the traction guide rollers of the heat insulation film winding device. The tension of the heat insulation film is controlled by the tension control mechanism during the traction process of the traction guide rollers.

[0012] As an optional solution for the hot-pressing structure of the packaging bag film, the tension control mechanism has at least a drive mechanism, tension rollers and a swing arm. The tension rollers are arranged at intervals on the swing arm, and the upper end of the swing arm is connected to the drive mechanism. The drive mechanism controls the swing arm to swing, thereby adjusting the tension of the heat insulation film.

[0013] As an optional solution for the hot-pressing structure of the packaging bag film, the tension roller of the tension control mechanism is spaced apart from the guide rollers of the heat insulation film unwinding device and the heat insulation film winding device.

[0014] As an alternative to the hot-pressing structure of the packaging bag film, one embodiment of the heat insulation film receiving and discharging device may include an integrated structure having a film roller forming a closed loop and a traction guide roller.

[0015] As an optional solution for the hot-pressing structure of the packaging bag film, the integrated structure is respectively set on the outside of the hot-pressing mechanism of each hot-pressing station, and the guide rollers of the integrated structure are all located above the packaging bag film, so as to form an isolation between the packaging bag film and the hot-pressing mechanism.

[0016] As an optional solution for the hot-pressing structure of the packaging bag film, the film roller of the heat insulation film take-up and release device is located at the top, and the guide rollers are distributed on both sides of the hot-pressing mechanism, so that the film roller and the guide roller of the heat insulation film take-up and release device form an enclosing structure around the hot-pressing mechanism, and the heat insulation film guided by the heat insulation film take-up and release device forms a form surrounding the hot-pressing mechanism.

[0017] As an optional solution for the heat-pressed structure of the packaging bag film, the heat-insulating film is made of PET material.

[0018] This utility model also provides a bag making machine, which is equipped with the aforementioned hot-pressing structure for packaging bag film to reduce the adhesion of packaging bag film to the hot-sealing mechanism during the hot-sealing process.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The packaging bag film heat sealing structure and bag making machine provided by this utility model add a heat insulation film winding and unwinding device to the conventional bag making machine, forming a non-stick layer between the packaging bag film and the heat sealing mechanism. While not affecting the heat sealing effect, it prevents the heat sealing knife from sticking to the film during heat sealing, and the heat sealing part will not be pulled while sticking to the knife, effectively ensuring the bag forming effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bag-making machine manufacturing process according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the heat insulation film material take-up and take-down device in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the bag-making machine manufacturing process according to Embodiment 2 of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the heat insulation film material take-up and take-down device in Embodiment 2 of this utility model.

[0025] Figure reference numerals:

[0026] 1- Bag making machine;

[0027] 10-Frame; 11-Main film unwinding mechanism; 12-Main film traction mechanism; 13-Longitudinal sealing and heat sealing mechanism; 14-Longitudinal sealing and cooling mechanism; 15-Transverse sealing and heat sealing mechanism; 16-Transverse sealing and cooling mechanism; 17-Cutting mechanism; 18-Insulation film material unwinding and rewinding device; 180-Insulation film material unwinding device; 1800-First film material roller; 1801-First tension control mechanism; 18010-Drive mechanism; 18011-Tension roller; 18012-Swing rod; 1802-First traction guide roller; 181-Insulation film material rewinding device; 1820-Second film material roller; 1821-Second traction guide roller;

[0028] 2-Packaging bag film material;

[0029] 3-Insulating membrane material. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a hot stamping structure for packaging bag film and a bag making machine, which will be described below. Figures 1 to 3 The specific content of this embodiment will be described in detail.

[0035] Combination Figure 1 and Figure 3 As shown, in the packaging bag preparation process of bag making machine 1, according to the conveying direction of packaging bag film material 2 (indicated by the arrow in the figure), the main film unwinding mechanism 11 unwinds the film in sequence, and after being pulled by the main film traction mechanism 12, it enters the longitudinal sealing and heat sealing mechanism 13 for longitudinal sealing and heat pressing, the longitudinal sealing and cooling mechanism 14 for longitudinal sealing and cooling, the transverse sealing and heat sealing mechanism 15 for transverse sealing and heat pressing, the transverse sealing and cooling mechanism 16 for transverse sealing and cooling, and finally the cutting mechanism 17 cuts the prepared packaging bag. The main film unwinding mechanism 11, main film traction mechanism 12, longitudinal sealing and heat sealing mechanism 13, longitudinal sealing and cooling mechanism 14, transverse sealing and heat sealing mechanism 15, transverse sealing and cooling mechanism 16, and cutting mechanism 17 in this preparation process can all adopt relevant structures of existing bag making machines, which are existing technologies and will not be described in detail here.

[0036] The hot-pressing structure for packaging bag film involved in this utility model is a technical improvement based on existing bag making machines, including:

[0037] Frame 10 is used to support the hot pressing structure;

[0038] A heat sealing mechanism, installed on the frame 10, is used to perform local heat sealing on the packaging bag film 2;

[0039] The heat insulation mechanism is located adjacent to the hot-sealing mechanism and includes at least a heat insulation film receiving and dispensing device 18. The heat insulation film 3 is conveyed to the packaging bag film 2 above the hot-sealing mechanism by the heat insulation film receiving and dispensing device 18, so as to form a hot-sealing heat insulation layer between the packaging bag film 2 and the hot-sealing mechanism, and to avoid the hot-sealing mechanism and the packaging bag film 2 from direct contact and adhesion.

[0040] A more detailed explanation is as follows: Example

[0041] Combination Figures 1-2 As shown, the heat insulation film unwinding device 18 adopts a separate structure. The separate heat insulation film unwinding device 18 includes a heat insulation film unwinding device 180 and a heat insulation film winding device 181. In this embodiment, the heat insulation film unwinding device 180 is located between the main film unwinding device 11 of the packaging bag film and the heat sealing mechanism of the first heat sealing station; the heat insulation film winding device 181 is located at the rear end of the heat sealing mechanism of the last heat sealing station, forming a unified unwinding and winding of the heat insulation film in the overall process of the heat sealing mechanism.

[0042] It should be noted that the hot sealing mechanisms located at the first hot sealing station and the last hot sealing station can be either a longitudinal hot sealing mechanism 13 or a transverse hot sealing mechanism 15. In this embodiment, the hot sealing mechanism at the first hot sealing station is a longitudinal hot sealing mechanism 13, and the hot sealing mechanism at the last hot sealing station is a transverse hot sealing mechanism 15. In actual use, the heat insulation film material take-up and take-down mechanism 18 of the hot sealing station is set at the position that needs to be adjusted as needed.

[0043] Both the heat insulation film unwinding device 180 and the heat insulation film winding device 181 have a first film roller 1800, a tension control mechanism 1801, and a first traction guide roller 1802. The first film roller 1800 of the heat insulation film unwinding device 180 transports the heat insulation film 3 into the first traction guide roller 1802. After the tension of the heat insulation film 3 during the transport process is controlled by the tension control mechanism 1801, it is pulled by the first traction guide roller 1802 to the top of the packaging bag film 2 at the hot-sealing mechanism, and then to the first traction guide roller 1802 of the heat insulation film winding device 181. The first traction guide roller 1802 pulls the heat insulation film 3 to the first film roller 1800 of the heat insulation film winding device 181. During the traction process of the first traction guide roller 1802, the tension of the heat insulation film 3 is controlled by the tension control mechanism 1801.

[0044] The tension control mechanism 1801 has at least a drive mechanism 18010, a tension roller 18011 and a swing arm 18012. The tension rollers 18011 are arranged at intervals on the swing arm 18012. The upper end of the swing arm 18012 is connected to the drive mechanism 18010. The drive mechanism 18010 controls the swing arm 18012 to swing, thereby adjusting the tension of the heat insulation film 13.

[0045] The drive mechanism 18010 can be a drive motor or cylinder, etc.

[0046] The tension control mechanism 1801 has more than one tension roller 18011 and the first traction guide roller 1802 of the heat insulation film unwinding device 180 and the heat insulation film winding device 181, and the two are spaced apart.

[0047] Example 2

[0048] The heat insulation film material take-up and take-down device 18 adopts an integrated structure, which has a second film material roller 1820 forming a closed loop and a second traction guide roller 1821.

[0049] The integrated heat insulation film take-up and take-up device 18 is respectively set outside the heat sealing mechanism of each heat sealing station, and the second guide roller 1821 of the integrated heat insulation film take-up and take-up device 18 is located above the packaging bag film 2, so as to form an isolation between the packaging bag film 2 and the heat sealing mechanism.

[0050] In this embodiment, the second film roller 1820 of the heat insulation film receiving and releasing device 18 is located at the top, and the second traction guide roller 1821 is distributed on both sides of the heat sealing mechanism, so that the second film roller 1820 and the second traction guide roller 1821 of the heat insulation film receiving and releasing device 18 form a surrounding structure around the heat sealing mechanism, and the heat insulation film 3 guided by the heat insulation film receiving and releasing device 18 forms a form surrounding the heat sealing mechanism.

[0051] It should be noted that the heat insulation film 3 in this solution is preferably made of PET material, but other heat insulation materials may also be used in other embodiments.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A structure for heat-sealing a packaging bag film material, characterized by comprising: include: The frame is used to support the hot pressing structure; A heat sealing mechanism, mounted on the frame, is used to locally heat seal the packaging bag film. A heat insulation mechanism is provided adjacent to the hot-sealing mechanism and includes at least a heat insulation film receiving and dispensing device. The heat insulation film is conveyed to the packaging bag film at the hot-sealing mechanism to form a heat-sealing heat insulation layer between the packaging bag film and the hot-sealing mechanism, thereby preventing the hot-sealing mechanism from directly contacting the packaging bag film and causing adhesion.

2. The bag film material seaming structure of claim 1, wherein: The heat insulation film unwinding and rewinding device is a separate structure, which includes a heat insulation film unwinding device and a heat insulation film rewinding device. The heat insulation film unwinding device is located between the main film unwinding device of the packaging bag film and the heat sealing mechanism of the first heat sealing station; the heat insulation film rewinding device is located at the rear end of the heat sealing mechanism of the last heat sealing station, forming a unified unwinding and rewinding of the heat insulation film in the overall process of the heat sealing mechanism.

3. The bag film material seaming structure of claim 2, wherein: The hot-sealing mechanisms located at the first hot-sealing station and the last hot-sealing station are either longitudinal hot-sealing mechanisms or transverse hot-sealing mechanisms.

4. The packaging bag film material structure of claim 2, wherein: Both the heat insulation film unwinding device and the heat insulation film rewinding device have film rollers, tension control mechanisms, and guide rollers. The film rollers of the heat insulation film unwinding device convey the heat insulation film into the guide rollers. After the tension of the heat insulation film during the conveying process is controlled by the tension control mechanism, it is pulled by the guide rollers to the top of the packaging bag film at the hot-sealing mechanism, and then to the guide rollers of the heat insulation film rewinding device. The guide rollers then pull it to the film rollers of the heat insulation film rewinding device. During the traction process of the guide rollers, the tension of the heat insulation film is controlled by the tension control mechanism.

5. The bag film material seaming structure of claim 4, wherein: The tension control mechanism includes at least a drive mechanism, tension rollers, and a swing arm. The tension rollers are arranged at intervals on the swing arm, and the upper end of the swing arm is connected to the drive mechanism. The drive mechanism controls the swing arm to swing, thereby adjusting the tension of the heat insulation film.

6. The bag film material seaming structure of claim 5, wherein: The tension roller of the tension control mechanism is spaced apart from the guide rollers of the heat insulation film unwinding device and the heat insulation film winding device.

7. The bag film material seaming structure of claim 1, wherein: The heat insulation membrane material handling device includes an integrated structure, which has a membrane material roller forming a closed loop and a traction guide roller.

8. The bag film material seaming structure of claim 7, wherein: The integrated structure is respectively set on the outside of the hot sealing mechanism of each hot sealing station, and the guide rollers of the integrated structure are all located above the packaging bag film, so as to form an isolation between the packaging bag film and the hot sealing mechanism.

9. The bag film material seaming structure of claim 7, wherein: The film roller of the heat insulation film feeding device is located at the top, and the guide roller is distributed on both sides of the heat sealing mechanism, so that the film roller and the guide roller of the heat insulation film feeding device form a surrounding structure around the heat sealing mechanism, and the heat insulation film guided by the heat insulation film feeding device forms a surrounding heat sealing mechanism.

10. A bag making machine characterized by: The bag making machine is equipped with the hot-pressing structure for packaging bag film as described in any one of claims 1-9, so as to reduce the adhesion of packaging bag film to the hot-sealing mechanism during the hot-sealing process.

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