Heat-seal cutting device of bag making machine

Abstract

The utility model provides a heat-sealing cutting device of a bag making machine, which comprises a bag making machine body and a conveying belt, and further comprises a limiting and smoothing assembly, a heat-sealing assembly, a cutting assembly and a fixing assembly. According to the packaging film heat-sealing device, the heat-sealing effect of a packaging film is effectively prevented from being affected by wrinkles on the surface of the packaging film, the heat-sealing precision of the packaging film is effectively guaranteed, the quality of a finished packaging bag is effectively improved, and through cooperative work of a lifting plate, a heat-sealing pressing plate and a first limiting spring, when the packaging film is subjected to heat sealing, the heat-sealing effect of the packaging film is effectively improved. The heat-sealing pressing plate can ensure that the heat-sealing pressing plate is in full contact with a packaging film, so that the heat-sealing effect on a packaging bag is effectively improved, and the problem of heat-sealing quality caused by insufficient contact or overlarge contact force is avoided.

Description

Technical Field

[0001] This utility model relates to the field of packaging film production technology, and in particular to a heat-sealing and cutting device for a bag making machine. Background Technology

[0002] Patent document CN222097164U discloses a hot cutting mechanism for a bag making machine, including a hot cutting blade. A circular cavity is formed on one side of the hot cutting blade along its length. An electric heating rod is installed inside the cavity. A power cord is installed at one end of the electric heating rod outside the cavity, and the power cord passes through a protective component. A lifting lug is fixedly connected to the middle of the upper surface of the hot cutting blade. A horizontally arranged through hole is formed on one side of the lifting lug, and a threaded rod is inserted into the through hole. The threaded rod is fixedly connected to a U-shaped frame. Nuts are provided on both sides of the lifting lug along the length of the threaded rod to limit the relative position between the lifting lug and the threaded rod. The nuts are threadedly connected to the threaded rod. The upper end of the lifting lug slides in contact with the horizontal part of the U-shaped frame. Two sets of driving components are installed on the upper surface of the horizontal part of the U-shaped frame. This invention has the following beneficial effects: it ensures that different parts of the hot cutting blade are in contact with the plastic bag, improving the utilization rate of the hot cutting blade.

[0003] However, when this bag-making machine cuts the packaging film, there is no limiting device at the other end of the hot-cutting unit. Because the packaging film is relatively soft, the outer side of the film moves during cutting, affecting the cutting effect. Therefore, it is necessary to improve this structure to overcome the aforementioned defects. Utility Model Content

[0004] The purpose of this invention is to provide a heat-sealing and cutting device for a bag-making machine to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A heat-sealing and cutting device for a bag-making machine includes a bag-making machine body and a conveyor belt, and further includes:

[0007] A limiting and smoothing component is installed at the top of the conveyor belt to limit the packaging film.

[0008] A heat-sealing assembly is installed in the bag-making machine body. The heat-sealing assembly is located on one side of the limiting and smoothing assembly and heat-seales the packaging film.

[0009] A cutting assembly, located on one side of the heat-sealing assembly, cuts the packaging film using the cutting assembly;

[0010] A fixing component is provided on the cutting component to fix the packaging film, thereby ensuring the cutting effect of the packaging film.

[0011] The present invention is further configured such that the limiting and smoothing component includes:

[0012] A fixed bracket is provided in the body of the bag making machine. The fixed bracket has an assembly space and moving slots on both sides. Limiting posts are provided in the moving slots.

[0013] A limiting roller is provided at the bottom of a fixed bracket, and its two sides are slidably disposed in the limiting posts of the fixed bracket. The limiting roller limits the packaging film.

[0014] A limiting spring is sleeved on the limiting post of the fixed bracket. The top of the limiting spring abuts against the moving groove, and the bottom of the limiting spring abuts against the limiting roller.

[0015] The present invention is further configured such that the heat-sealing assembly includes:

[0016] A lifting cylinder is installed in the body of the bag making machine, and the drive end of the lifting cylinder is set downward.

[0017] A lifting plate, the top of which is connected to the drive end of a lifting cylinder, and the bottom of which is provided with a sliding groove, and a limit hole is provided in the sliding groove;

[0018] A heat-sealing plate, the top of which is disposed in the sliding groove of the lifting plate, and a support column is disposed on the top of the heat-sealing plate, the support column being inserted into the limiting hole of the lifting plate;

[0019] A limiting spring is provided, which is mounted on the support column. The top of the limiting spring abuts against the sliding groove of the lifting plate, and the bottom of the limiting spring abuts against the top of the heat-sealing pressure plate.

[0020] The present invention is further configured such that the cutting component includes:

[0021] Lifting cylinder two is located on the top of the bag making machine body, with the drive end of the lifting cylinder two facing downwards;

[0022] The top of the cutting knife holder is connected to the drive end of the lifting cylinder two, and the bottom of the cutting knife holder is equipped with a cutter to cut the packaging film.

[0023] The present invention is further configured such that the fixing component includes:

[0024] A fixed base is provided on one side of the cutting blade holder, and a movable cavity is provided in the fixed base;

[0025] A fixed pressure plate is slidably disposed in the movable cavity of the fixed base. A limit spring is provided on the top of the fixed pressure plate, and the packaging film is fixed by the fixed pressure plate.

[0026] The present invention is further provided with a guide column at the top of the lifting plate, which guides the lifting plate.

[0027] The advantages of this utility model are:

[0028] 1. This utility model, by setting a limiting and smoothing component, limits and smooths the packaging film, thereby effectively preventing wrinkles from appearing on the surface of the packaging film, which would affect the heat sealing effect of the packaging film, effectively ensuring the heat sealing accuracy of the packaging film, and thus effectively increasing the quality of the finished packaging bag.

[0029] 2. By setting up a lifting plate, a heat-sealing plate, and a limiting spring to work together, this utility model ensures that the heat-sealing plate can make full contact with the packaging film during heat sealing, thereby effectively increasing the heat sealing effect of the packaging bag and avoiding heat sealing quality problems caused by insufficient contact or excessive contact force.

[0030] 3. By setting a fixed base and a fixed pressure plate, the fixed pressure plate first contacts the packaging film when cutting the packaging film, thereby fixing the packaging film, and then the cutting blade cuts the packaging film. This effectively ensures that both ends of the packaging film are fixed during the cutting process, thus ensuring the cutting accuracy of the packaging film. Attached Figure Description

[0031] Figure 1 This is a perspective view of the heat-sealing and cutting device for the bag-making machine proposed in this utility model.

[0032] Figure 2 This is a schematic diagram of the internal structure of the heat-sealing and cutting device for the bag-making machine proposed in this utility model.

[0033] Figure 3 This utility model proposes Figure 2 A magnified view of a portion of point A in the middle.

[0034] Figure 4 This utility model proposes Figure 2 A magnified view of a section at point B in the middle.

[0035] Figure 5 This is a schematic diagram of the limiting post proposed in this utility model.

[0036] Numerical designations: Bag making machine body 101, conveyor belt 102, fixed bracket 110, moving trough 111, limiting post 112, limiting roller 120, limiting spring 130, lifting cylinder 210, lifting plate 220, sliding groove 221, limiting hole 222, heat sealing plate 230, support column 231, limiting spring one 240, lifting cylinder two 310, cutting knife holder 320, cutting knife 330, fixed seat 410, fixed pressure plate 420, limiting spring two 430, guide post 510 Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0038] Example 1

[0039] like Figure 1-5 As shown, the present invention proposes a heat-sealing and cutting device for a bag-making machine, including a bag-making machine body 101 and a conveyor belt 102, and further including a limiting and smoothing component, a heat-sealing component, a cutting component, and a fixing component. The limiting and smoothing component is disposed on the top of the conveyor belt and limits the packaging film. The heat-sealing component is disposed in the bag-making machine body and is located on one side of the limiting and smoothing component. The heat-sealing component heat-seals the packaging film. The cutting component is disposed on one side of the heat-sealing component and cuts the packaging film. The fixing component is disposed on the cutting component and fixes the packaging film, thereby ensuring the cutting effect of the packaging film.

[0040] In this embodiment, the limiting and smoothing assembly includes a fixed bracket 110, a limiting roller 120, and a limiting spring 130. The fixed bracket is disposed in the bag making machine body and has an assembly space. Movable grooves 111 are provided on both sides of the fixed bracket, and limiting posts 112 are provided in the movable grooves. The limiting roller is disposed at the bottom of the fixed bracket, and its two sides are slidably disposed in the limiting posts of the fixed bracket. The limiting roller limits the packaging film. The limiting spring is sleeved on the limiting posts of the fixed bracket. The top of the limiting spring abuts against the movable groove, and the bottom of the limiting spring abuts against the limiting roller.

[0041] In this embodiment, the heat sealing assembly includes a lifting cylinder 210, a lifting plate 220, a heat sealing pressure plate 230, and a limiting spring 240. The lifting cylinder is disposed in the bag making machine body, with its driving end facing downwards. The top of the lifting plate is connected to the driving end of the lifting cylinder. The bottom of the lifting plate is provided with a sliding groove 221, and a limiting hole 222 is provided in the sliding groove. It is worth noting that a limiting block is provided at the bottom of the sliding groove to limit the heat sealing pressure plate and prevent it from falling. The top of the heat sealing pressure plate is disposed in the sliding groove of the lifting plate. A support column 231 is provided on the top of the heat sealing pressure plate and is inserted into the limiting hole of the lifting plate. A limiting spring is fitted on the support column, with the top of the limiting spring abutting against the sliding groove of the lifting plate and the bottom of the limiting spring abutting against the top of the heat sealing pressure plate.

[0042] In this embodiment, the cutting assembly includes a second lifting cylinder 310 and a cutting blade holder 320. The second lifting cylinder is located on the top of the bag making machine body, with its drive end facing downwards. The top of the cutting blade holder is connected to the drive end of the second lifting cylinder, and a cutter 330 is provided at the bottom of the cutting blade holder to cut the packaging film.

[0043] Example 2

[0044] like Figure 1-5 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the fixing component includes a fixing base 410 and a fixing pressure plate 420. The fixing base is disposed on one side of the cutting blade holder. The fixing base is provided with a movable cavity. It is worth noting that the bottom of the movable cavity is also provided with a limit block, which limits the fixing pressure plate to prevent it from falling off. The fixing pressure plate is slidably disposed in the fixing base. The top of the fixing pressure plate is provided with a limit spring 430, which fixes the packaging film. The amount of movement and extension of the fixing pressure plate is greater than the vertical distance from the fixing pressure plate to the cutter. Therefore, the fixing pressure plate will not affect the cutter from cutting the packaging film.

[0045] In this embodiment, the distance between the fixing seat and the packaging film is less than the distance between the cutter and the packaging film, thereby ensuring that the fixing seat can fix the packaging film first.

[0046] In this embodiment, a guide post 510 is provided on the top of the lifting plate to guide the lifting plate, thereby preventing the heat sealing plate from shifting and causing the heat sealing area to become skewed, thus effectively improving the heat sealing effect.

[0047] The working principle of this utility model:

[0048] During operation, the packaging film passes through the bottom of the limiting roller, and the top of the limiting roller abuts against the limiting spring. After the limiting roller contacts the packaging film, the limiting spring compresses and generates a downward reaction force on the limiting roller, thus ensuring that the limiting roller abuts against the top of the packaging film and limits and smooths it. At this time, the lifting cylinder drives the lifting plate to move downward, and the heat sealing plate at the bottom of the lifting plate contacts the packaging film. The limiting spring deforms under force, thereby generating a downward force to ensure that the heat sealing plate is in complete contact with the packaging film, thus heat-sealing the packaging film. After heat sealing is completed, the packaging film moves to below the cutting assembly. The second lifting cylinder drives the cutting blade holder to move downward. The fixing plate in the fixing seat first contacts the packaging film, thereby fixing the packaging film. The second limiting spring deforms under force, and the cutting blade holder then drives the cutter to cut the packaging bag, thus completing the cutting and heat sealing of the packaging bag.

[0049] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A heat-seal cutting device of a bag making machine, comprising a bag making machine body and a conveyor belt, characterized in that, Also include: The limiting smoothing assembly is arranged at the top of the conveying belt, and the packaging film is limited by the limiting smoothing assembly; The heat sealing assembly is arranged in the bag making machine body, and the heat sealing assembly is located on one side of the limiting smoothing assembly, and the packaging film is heat sealed by the heat sealing assembly; The cutting assembly is arranged on one side of the heat sealing assembly, and the packaging film is cut by the cutting assembly; The fixing assembly is arranged on the cutting assembly, and the packaging film is fixed by the fixing assembly, so as to ensure the cutting effect of the packaging film.

2. A heat sealing and cutting device of a bag making machine according to claim 1, wherein The limiting smoothing assembly includes: The fixed support is arranged in the bag making machine body, and the fixed support is arranged in the fixed support. The two sides of the fixed support are provided with moving grooves, and the moving grooves are provided with limiting columns; The limiting roller is arranged at the bottom of the fixed support, and the limiting roller is slidably arranged in the limiting column of the fixed support. The limiting roller limits the packaging film; The limiting spring is sleeved on the limiting column of the fixed support, the top of the limiting spring abuts against the moving groove, and the bottom of the limiting spring abuts against the limiting roller.

3. A heat sealing and cutting device of a bag making machine according to claim 1, wherein The heat sealing assembly includes: The lifting cylinder is arranged in the bag making machine body, and the driving end of the lifting cylinder is arranged downward; The lifting plate is connected with the driving end of the lifting cylinder at the top, and the bottom of the lifting plate is provided with a sliding groove, and the sliding groove is provided with a limiting hole; The heat sealing pressure plate is arranged at the top of the lifting plate, and the top of the heat sealing pressure plate is provided with a supporting column, and the supporting column is inserted into the limiting hole of the lifting plate; The first limiting spring is sleeved on the supporting column, the top of the first limiting spring abuts against the sliding groove of the lifting plate, and the bottom of the first limiting spring abuts against the top of the heat sealing pressure plate.

4. A heat sealing and cutting apparatus of a bag making machine according to claim 1, wherein The cutting assembly includes: The second lifting cylinder is arranged at the top of the bag making machine body, and the driving end of the second lifting cylinder is arranged downward; The cutting knife seat is connected with the driving end of the second lifting cylinder at the top, and the bottom of the cutting knife seat is provided with a cutting knife for cutting the packaging film.

5. A heat sealing and cutting apparatus of a bag making machine according to claim 4, wherein The fixing assembly includes: The fixing seat is arranged on one side of the cutting knife seat, and the fixing seat is provided with a moving cavity; The fixed pressure plate is slidably arranged in the moving cavity of the fixed seat, and the top of the fixed pressure plate is provided with a second limiting spring, and the packaging film is fixed by the fixed pressure plate.

6. A heat sealing and cutting apparatus of a bag making machine according to claim 3, wherein The top of the lifting plate is provided with a guide column for guiding the lifting plate.

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