Die cutting three-edge sealing device of bag making machine

Abstract

The utility model relates to the technical field of bag making machines, and discloses a bag making machine die cutting three-edge sealing device which comprises a top plate, a C-shaped pressing plate is arranged on the lower side of the top plate, a C-shaped heating plate is fixedly installed on the lower surface of the C-shaped pressing plate, a C-shaped through groove is formed in the C-shaped pressing plate, and the C-shaped through groove extends out of the lower surface of the C-shaped heating plate. A hydraulic cylinder is fixedly installed on the top plate, the lower end of a telescopic rod of the hydraulic cylinder penetrates out of the lower surface of the top plate in a sliding mode, a supporting plate is fixedly connected to the lower end of the telescopic rod of the hydraulic cylinder, a [-shaped cutting knife is fixedly connected to the lower surface of the supporting plate, and the lower side of the [-shaped cutting knife extends into the [-shaped through groove. Three rotating shafts are arranged in two vertical grooves and a transverse groove of the [-shaped through groove; according to the utility model, the heat conducting plate is arranged and can be used for carrying out heat sealing treatment on the bag edge in the [-shaped through groove, so that the problem that the bag edge has an opening after being cut is avoided as much as possible, and the aesthetic property and the strength of the bag body after being processed are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a die-cutting three-side sealing device for a bag making machine. Background Art

[0002] Three-side seal bag making machine is mainly used to produce various plastic-plastic and paper-plastic composite materials. It is an ideal bag making equipment for various center-seal bags and three-side seal bags.

[0003] After searching, for example, a Chinese patent document discloses a three-side sealing bag making machine [application number: CN202322606288.4]. This three-side sealing bag making machine includes a top plate, a bag making assembly, a support assembly and a processing assembly; the bag making assembly includes a hydraulic cylinder, a hydraulic column, a support plate, a cylinder, a gas rod, a knife holder and a cutting knife, the hydraulic cylinder is fixedly connected to the top plate and is located at the top of the top plate, the hydraulic column is connected to the hydraulic cylinder and passes through the top plate, the support plate is fixedly connected to the hydraulic column and is located at the bottom of the hydraulic column, the number of cylinders is two, the two cylinders are respectively fixedly connected to the support plate and are respectively located at the top of the support plate, a gas rod is connected to the bottom of each cylinder, the knife holder is fixedly connected to the gas rod, the cutting knife is detachably connected to the knife holder, the support assembly is connected to the top plate, and the processing assembly is connected to the support assembly.

[0004] The device disclosed in this patent solves the problem that when edge sealing and bag making is performed, the sealed edge cannot be cut after heat sealing, resulting in the heat-sealed bag edge being too wide and the bag edge being unsightly. However, when the device is in use, the inner heating plate and the outer heating plate cannot heat-seal the bag edge in the area between the inner heating plate and the outer heating plate when heat sealing the bag edge. However, the cutting knife in the prior art cuts the area between the inner heating plate and the outer heating plate, which results in the problem of opening of the bag edge after cutting, affecting the aesthetics and strength of the bag after processing. In response to the above problems, the inventor has designed a die-cutting three-edge sealing device for a bag making machine. Utility Model Content

[0005] The utility model aims to provide a die-cutting three-side sealing device for a bag making machine to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: A die-cutting three-side sealing device for a bag-making machine, including a top plate. A U-shaped pressing plate is provided on the lower side of the top plate. A U-shaped heating plate is fixedly installed on the lower surface of the U-shaped pressing plate. A U-shaped through groove is formed in the U-shaped pressing plate, and the U-shaped through groove extends out of the lower surface of the U-shaped heating plate. A hydraulic cylinder is fixedly installed on the top plate. The lower end of the telescopic rod of the hydraulic cylinder slides through the lower surface of the top plate. The lower end of the telescopic rod of the hydraulic cylinder is fixedly connected to a support plate. A U-shaped cutting knife is fixedly connected to the lower surface of the support plate. The lower side of the U-shaped cutting knife extends into the U-shaped through groove. Three rotating shafts are provided in the two vertical grooves and the horizontal groove of the U-shaped through groove. One end of the rotating shaft in the vertical groove is fixedly connected to the inner wall of the vertical groove far from the horizontal groove. Both ends of the rotating shaft in the horizontal groove are fixedly connected to the opposite inner walls of the horizontal groove. Three heat-conducting plates are rotatably sleeved on the three rotating shafts. The lower surface of the heat-conducting plate is flush with the lower surface of the U-shaped heating plate. The side of the heat-conducting plate close to the U-shaped heating plate is semicircular and contacts the U-shaped heating plate. Three driving mechanisms are provided in the U-shaped through groove, and the three driving mechanisms are respectively arranged above the three heat-conducting plates.

[0007] Preferably, four limiting rods are fixedly connected to the upper surface of the U-shaped pressing plate. The upper ends of the four limiting rods all slide through the upper surface of the support plate. The upper ends of the limiting rods are fixedly connected to a limiting plate. A spring is movably sleeved on the outer surface of the limiting rod. Both ends of the spring are respectively fixedly installed on the opposite surfaces of the U-shaped pressing plate and the support plate.

[0008] Preferably, the driving mechanism includes two connecting plates. The two connecting plates are fixedly installed on the inner wall of the U-shaped through groove in a vertically parallel manner. A connecting sliding rod is fixedly connected between the two connecting plates. A rack is slidably sleeved on the connecting sliding rod. A rotating pull plate is hinged between the lower surface of the rack and the upper surface of the heat-conducting plate.

[0009] Preferably, a mounting plate is fixedly connected to the inner wall of the U-shaped through groove. A gear is rotatably connected to the side surface of the mounting plate. The gear is meshed with the rack.

[0010] Preferably, a plurality of teeth are fixedly connected to the side surface of the U-shaped cutting knife facing the gear. The U-shaped cutting knife is meshed with the gear through the teeth.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] First, by providing the heat-conducting plate, when the U-shaped heating plate heats to thermally seal the bag edge, the heat of the U-shaped heating plate will be conducted to the heat-conducting plate. In this way, the heat-conducting plate can thermally seal the bag edge in the U-shaped through groove, and尽量避免了袋边在被裁切后存在开口的问题,保障了该袋体加工后的美观性以及强度。 It should be noted that the Chinese sentence in the last line of the original text seems to be incomplete or have some incorrect expressions. The translation is based on the existing content as accurately as possible.

[0013] Second, the utility model is provided with a driving mechanism, which can automatically rotate the heat conducting plate when the U-shaped cutting knife cuts the bag body, without manual control and can run completely automatically, ensuring the smooth conversion between the heat sealing process and the cutting process of the bag body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a die-cutting three-side sealing device of a bag-making machine of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the support plate of the utility model;

[0016] Figure 3 It is a partial three-dimensional sectional structural schematic diagram of the U-shaped pressing plate of the utility model;

[0017] Figure 4 is Figure 3 the enlarged view at A in

[0018] In the figure: 1, top plate; 2, hydraulic cylinder; 3, support plate; 4, U-shaped pressing plate; 5, U-shaped heating plate; 6, U-shaped through groove; 7, U-shaped cutting knife; 8, limiting rod; 9, spring; 10, limiting plate; 11, rotating shaft; 12, heat conducting plate; 13, connecting plate; 14, connecting sliding rod; 15, rack; 16, rotating pull plate; 17, mounting plate; 18, gear; 19, tooth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-4 As shown, a die-cutting three-side sealing device of a bag-making machine includes a top plate 1, a hydraulic cylinder 2 is fixedly installed on the top plate 1, the lower end of the telescopic rod of the hydraulic cylinder 2 slides through the lower surface of the top plate 1, the lower end of the telescopic rod of the hydraulic cylinder 2 is fixedly connected with a support plate 3, a U-shaped pressing plate 4 is arranged below the support plate 3, a U-shaped heating plate 5 is fixedly installed on the lower surface of the U-shaped pressing plate 4, and at the same time, the U-shaped heating plate 5 is a known public technology in the existing patent: CN220785078U, and will not be elaborated here.

[0021] More preferably, four limiting rods 8 are fixedly connected to the upper surface of the U-shaped pressing plate 4. The upper ends of the four limiting rods 8 all slidably penetrate through the upper surface of the support plate 3. A limiting plate 10 is fixedly connected to the upper ends of the limiting rods 8. A spring 9 is movably sleeved on the outer surface of the limiting rod 8. The two ends of the spring 9 are respectively fixedly installed on the opposite surfaces of the U-shaped pressing plate 4 and the support plate 3. When the U-shaped heating plate 5 contacts the workbench surface, the spring 9 will deform under force, achieving the purpose of buffering the U-shaped heating plate 5, reducing the impact on the workbench surface, and prolonging the service life of the machine.

[0022] More preferably, a U-shaped through groove 6 is formed in the U-shaped pressing plate 4. The U-shaped through groove 6 extends out of the lower surface of the U-shaped heating plate 5. A U-shaped cutting knife 7 is fixedly connected to the lower surface of the support plate 3. The lower side of the U-shaped cutting knife 7 extends into the U-shaped through groove 6. When the U-shaped heating plate 5 heat-seals the bag edge, the hydraulic cylinder 2 pushes the support plate 3 to continue moving downward. Since the U-shaped pressing plate 4 is blocked by the tabletop and cannot move, the support plate 3 drives the U-shaped cutting knife 7 to move downward. At the same time, the spring 9 is stressed and contracts. Therefore, the U-shaped cutting knife 7 can cut the bag edge.

[0023] More preferably, three rotating shafts 11 are arranged in the two vertical grooves and the horizontal groove of the U-shaped through groove 6. One end of the rotating shaft 11 in the vertical groove is fixedly connected to the inner wall of the vertical groove away from the horizontal groove, while both ends of the rotating shaft 11 in the horizontal groove are fixedly connected to the opposite inner walls of the horizontal groove. Three heat conducting plates 12 are rotatably sleeved on the three rotating shafts 11. The lower surface of the heat conducting plate 12 is flush with the lower surface of the U-shaped heating plate 5. The side of the heat conducting plate 12 close to the U-shaped heating plate 5 is semicircular and contacts the U-shaped heating plate 5. At the same time, the heat conducting plate 12 is made of a metal material with heat conducting properties, such as copper. When the heat conducting plate 12 rotates to the horizontal position, its bottom is flush with the lower surface of the U-shaped heating plate 5.

[0024] When the U-shaped heating plate 5 heats up to heat-seal the bag edge, the heat of the U-shaped heating plate 5 will be conducted to the heat conducting plate 12. In this way, the heat conducting plate 12 can heat-seal the bag edge in the U-shaped through groove 6,尽量避免了袋边在被裁切后存在开口的问题,保障了该袋体加工后的美观性以及强度。

[0025] More preferably, three driving mechanisms are arranged in the U-shaped through groove 6. The three driving mechanisms are respectively arranged above the three heat conducting plates 12. The driving mechanism includes two connecting plates 13. The two connecting plates 13 are fixedly installed on the inner wall of the U-shaped through groove 6 in a vertically parallel manner. A connecting sliding rod 14 is fixedly connected between the two connecting plates 13. A rack 15 is slidably sleeved on the connecting sliding rod 14. A rotating pull plate 16 is hinged between the lower surface of the rack 15 and the upper surface of the heat conducting plate 12.

[0026] It should be noted that there is an unclear expression in the original text of item . I have translated it as best as possible while maintaining the integrity of the meaning. If you have any other questions, please feel free to let me know.During use, by controlling the upward displacement of the rack 15, the control rack 15 will form an upward pulling force on the rotating pull plate 16. At this time, the rotating pull plate 16 pulls the heat conducting plate 12 to rotate inwards with the rotating shaft 11 as the rotation point.

[0027] More preferably, a mounting plate 17 is fixedly connected to the inner wall of the U-shaped through groove 6. A gear 18 is rotatably connected to the side surface of the mounting plate 17. The gear 18 is meshed and connected with the rack 15. A plurality of teeth 19 are fixedly connected to the surface of the U-shaped cutting knife 7 facing the gear 18. The U-shaped cutting knife 7 is meshed with the gear 18 through the teeth 19. The teeth 19 are arranged at the bottom of the U-shaped cutting knife 7, but not on the cutting edge surface of the U-shaped cutting knife 7.

[0028] When the U-shaped cutting knife 7 moves downward, the teeth 19 on the U-shaped cutting knife 7 are meshed with the gear 18, thereby driving the gear 18 to rotate counterclockwise. At this time, the gear 18 synchronously meshes and drives the rack 15 to move upward, so as to achieve the purpose of controlling the rotation of the heat conducting plate 12 and not blocking the downward movement of the U-shaped cutting knife 7. When the rotation angle of the heat conducting plate 12 reaches 90 degrees, the teeth 19 on the U-shaped cutting knife 7 are no longer meshed with the gear 18, but the lower side of the U-shaped cutting knife 7 has been displaced to the bottom of the U-shaped through groove 6. At this time, the heat conducting plate 12 is blocked by the U-shaped cutting knife 7 and will not reverse. By adopting the above driving mechanism, when the U-shaped cutting knife 7 cuts the bag body, the heat conducting plate 12 can be automatically rotated without manual control and can run completely automatically, ensuring the smoothness of the conversion between the heat sealing process and the cutting process of the bag body.

[0029] Working principle: When the hydraulic cylinder 2 is started and pushes the U-shaped heating plate 5 to move downward and finally contacts the bag body, when the U-shaped heating plate 5 heats and heat seals the bag edge, the heat of the U-shaped heating plate 5 will be conducted to the heat conducting plate 12, so that the heat conducting plate 12 can heat seal the bag edge in the U-shaped through groove 6.

[0030] After heat sealing is completed, the hydraulic cylinder 2 pushes the support plate 3 to continue to move downward. Since the U-shaped pressing plate 4 is blocked by the table surface and cannot move, the support plate 3 drives the U-shaped cutting knife 7 to move downward. At the same time, the teeth 19 on the U-shaped cutting knife 7 are meshed with the gear 18, thereby driving the gear 18 to rotate counterclockwise. At this time, the gear 18 synchronously meshes and drives the rack 15 to move upward. The control rack 15 will form an upward pulling force on the rotating pull plate 16. At this time, the rotating pull plate 16 pulls the heat conducting plate 12 to rotate inwards with the rotating shaft 11 as the rotation point and does not block the downward movement of the U-shaped cutting knife 7, so that the U-shaped cutting knife 7 can cut the bag edge.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-cutting and three-side sealing device for a bag-making machine, comprising a top plate (1), a U-shaped pressing plate (4) is arranged below the top plate (1), and a U-shaped heating plate (5) is fixedly installed on the lower surface of the U-shaped pressing plate (4), characterized in that: The U-shaped pressing plate (4) is provided with a U-shaped through groove (6), and the U-shaped through groove (6) extends out of the lower surface of the U-shaped heating plate (5). A hydraulic cylinder (2) is fixedly installed on the top plate (1), and the lower end of the telescopic rod of the hydraulic cylinder (2) slidably penetrates out of the lower surface of the top plate (1). The lower end of the telescopic rod of the hydraulic cylinder (2) is fixedly connected with a support plate (3). The lower surface of the support plate (3) is fixedly connected with a U-shaped cutting knife (7), and the lower side of the U-shaped cutting knife (7) extends into the U-shaped through groove (6). Three rotating shafts (11) are arranged in the two vertical grooves and the horizontal groove of the U-shaped through groove (6). One end of the rotating shaft (11) in the vertical groove is fixedly connected to the inner wall of the vertical groove far from the horizontal groove, and both ends of the rotating shaft (11) in the horizontal groove are fixedly connected to the opposite inner walls of the horizontal groove. Three heat conducting plates (12) are rotatably sleeved on the three rotating shafts (11), and the lower surface of the heat conducting plate (12) is flush with the lower surface of the U-shaped heating plate (5). The side of the heat conducting plate (12) close to the U-shaped heating plate (5) is semicircular and contacts the U-shaped heating plate (5). Three driving mechanisms are arranged in the U-shaped through groove (6), and the three driving mechanisms are respectively arranged above the three heat conducting plates (12).

2. A die-cutting three-side sealing device for a bag making machine according to claim 1, characterized in that: Four limiting rods (8) are fixedly connected to the upper surface of the U-shaped pressing plate (4), and the upper ends of the four limiting rods (8) all slidably penetrate out of the upper surface of the support plate (3). The upper end of the limiting rod (8) is fixedly connected with a limiting plate (10).

3. The die-cutting three-side sealing device of a bag making machine according to claim 2, characterized in that: A spring (9) is movably sleeved on the outer surface of the limiting rod (8), and both ends of the spring (9) are respectively fixedly installed on the opposite surfaces of the U-shaped pressing plate (4) and the support plate (3).

4. The die-cutting three-side sealing device of a bag making machine according to claim 1, characterized in that: The driving mechanism includes two connecting plates (13), a connecting slide rod (14) is fixedly connected between the two connecting plates (13), a rack (15) is slidably sleeved on the connecting slide rod (14), and a rotating pull plate (16) is hinged between the lower surface of the rack (15) and the upper surface of the heat conducting plate (12).

5. The die-cutting three-side sealing device of a bag making machine according to claim 4, characterized in that: A mounting plate (17) is fixedly connected to the inner wall of the U-shaped through groove (6), and a gear (18) is rotatably connected to the side surface of the mounting plate (17). The gear (18) is meshed with the rack (15).

6. A die-cutting three-side sealing device for a bag making machine according to claim 5, characterized in that: A plurality of teeth (19) are fixedly connected to the surface of the U-shaped cutting knife (7) facing the gear (18), and the U-shaped cutting knife (7) is meshed with the gear (18) through the teeth (19).

7. The die-cutting three-side sealing device for a bag making machine according to claim 4, characterized in that: The two connecting plates (13) are fixedly installed on the inner wall of the U-shaped through groove (6) in a vertically parallel manner.

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