Bag making device

Abstract

The utility model discloses a bag making device which comprises a folded film supply part, a hot-press sealing assembly and a bag pulling assembly which are sequentially arranged in the moving direction of a folded film, a cutter assembly is arranged on the side portion of the hot-press sealing assembly, the folded film is provided with a folded edge, and the folded edge is arranged in the moving direction. The bag pulling assembly is used for clamping the end of the folded film and pulling the folded film to move in the moving direction. The hot-pressing sealing assembly is used for hot-pressing the folded film on the folded film in the direction perpendicular to the moving direction, and two hot-pressing sealing edges are formed. According to the utility model, two vertical sealing edges are simultaneously formed on the folded film through the hot-pressing sealing assembly, and the cutter assembly synchronously cuts off the folded film from the position between the two vertical sealing edges, so that the problems that when the cutter assembly operates, the cutter pulls the two sides of the folded film in an unbalanced manner, and the distances between the cutting edges and the sealing edges of the formed bag are different are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a bag making device. Background Art

[0002] Existing bag making devices are generally composite film bag making devices, which usually include guide rollers, traction devices, hot pressing edge sealing devices, cutting devices and clamping devices. For example, a packaging bag making device proposed in application number: 202122924231.X, during production, the cutting device is arranged in front of the edge sealing device along the traveling direction of the folded film. In a packaging bag forming process, the edge sealing device is firstly used to perform hot pressing edge sealing on the roll film twice, and then the cutter device is used to cut the roll film after the two edge sealings to form a packaging bag.

[0003] In the above process, the cutting knife assembly and the sealing assembly operate in a certain sequence. When the cutting knife cuts the folded film, one side of the folded film is sealed and the other side is not. The cutting knife assembly exerts unbalanced pressure on both sides of the folded film, which causes the distance between the cutting edge and the sealing edge of the bag to change to varying degrees. In particular, on the same formed packaging bag, there is a difference in the distance between the cutting edge and the sealing edge on both sides of the packaging bag. On the one hand, this reduces the appearance of the packaging bag, and on the other hand, there is also a phenomenon of waste of roll film material. Utility Model Content

[0004] The utility model aims to provide a bag making device to solve the technical problem that the cutting assembly and the sealing assembly in the bag making device of the prior art are not operated synchronously, resulting in the cutting assembly pulling the two sides of the folded film unbalancedly, so that the distance between the cutting edge and the sealing edge of the formed bag is different.

[0005] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] It includes a folding film supply part, a heat-pressing sealing component and a bag-pulling component which are sequentially arranged along the moving direction of the folding film, a cutting knife component is arranged on the side of the heat-pressing sealing component, and the folding film has a folded edge, and the folded edge is arranged along the moving direction;

[0007] The bag pulling assembly is used to clamp the end of the folded film and pull the folded film to move along the moving direction;

[0008] The heat-pressing and sealing assembly is used to heat-press the folded film perpendicularly to the moving direction on the folded film to form two heat-pressing and sealing edges;

[0009] The execution part of the cutter assembly is directly opposite to the space between the two heat-pressed sealed edges, and cuts off the folded film from between the two heat-pressed sealed edges.

[0010] As a preferred solution of the utility model, a limiting component is arranged between the folding film supply part and the hot pressing sealing assembly, and the folding film passes through the limiting component, and the limiting component is used to limit the deviation of the side of the folding film to keep the folding film moving along a preset fixed path.

[0011] As a preferred solution of the utility model, the limiting component is a plate-shaped, roller-shaped or block-shaped structure having a channel with a width equal to that of the folded film.

[0012] As a preferred solution of the utility model, the heat-pressing sealing assembly has two heat-pressing execution parts that can perform heat-pressing independently, each of the heat-pressing execution parts can at least form a heat-pressing edge seal at a different position on the folded film, and the cutter assembly is used to cut from the two heat-pressing edge seals;

[0013] The hot pressing execution part is located at the sealing plates on both sides of the folded film, and at least one of the sealing plates is a hot pressing plate capable of generating heat.

[0014] As a preferred solution of the utility model, two heat-pressing and sealing assemblies are provided, and the two heat-pressing and sealing assemblies are respectively provided on both sides of the cutter assembly;

[0015] The hot pressing sealing assembly and the cutter assembly are integrally combined via a spacer block, and the hot pressing execution parts of the two hot pressing sealing assemblies and the cutters of the cutter assembly operate simultaneously.

[0016] As a preferred solution of the utility model, the bag pulling assembly includes a film pulling guide rail bottom plate, a guide rail is arranged on the film pulling guide rail bottom plate, a robotic claw is connected to the sliding end of the guide rail, the guide rail drives the robotic claw to reciprocate along its length direction, and the robotic claw pulls the folded film to move along a preset fixed path.

[0017] As a preferred solution of the utility model, a bag-stretching assembly is provided between the hot-pressing sealing assembly and the bag-pulling assembly, and the bag-stretching assembly is used to stretch and shape the medicine bag.

[0018] As a preferred solution of the utility model, the bag-stretching assembly includes a cylindrical former and a driving member for driving the cylindrical former to move. The lower end of the cylindrical former is connected to a flat structure for facilitating insertion of the medicine bag. The cylindrical former of the bag-stretching assembly enters the medicine bag through the opening of the medicine bag so that the medicine bag is stretched into a specified shape.

[0019] As a preferred solution of the utility model, a film separation plate is arranged at the rear side of the limiting component, and the film separation plate is arranged at the film edge opening on the other side of the folded edge of the folded film;

[0020] After the folded film moves through the film separating plate, the film edge openings of the folded film are separated by the film separating plate.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In the utility model, two vertical edge seals are formed on the folded film at the same time by the hot-pressing sealing assembly, and the cutting knife assembly simultaneously cuts off the folded film between the two vertical edge seals, thereby avoiding the problem of unbalanced pulling of the two sides of the folded film by the cutting knife when the cutting knife assembly is in operation, and the different distances between the cutting edge and the sealing edge of the formed bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0024] Figure 1 A schematic diagram of the appearance structure of a bag making device is provided for an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the top view of the bag making device is provided for an embodiment of the utility model;

[0026] Figure 3 A side structural schematic diagram of a bag making device is provided for an embodiment of the utility model;

[0027] The numbers in the figure represent the following:

[0028] 1 folding film supply department, 101 folding film;

[0029] 2 steering shaft, 3 limiting component, 4 film dividing plate, 5 cushion block, 6 film drawing guide rail bottom plate, 7 guide rail, 8 bag pulling assembly, 9 medicine bag, 10 bag supporting assembly, 11 hot pressing sealing assembly, 12 cutting knife assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a bag making device.

[0032] It includes a folding film supply unit 1, a heat-pressing sealing assembly 11 and a bag-pulling assembly 8 which are sequentially arranged along the moving direction of the folding film 101. A cutter assembly 12 is arranged on the side of the heat-pressing sealing assembly 11. The folding film 101 has a folded edge, and the folded edge is arranged along the moving direction.

[0033] The bag pulling assembly 8 is used to clamp the end of the folded film and pull the folded film 101 to move along the moving direction.

[0034] The heat-pressing and sealing assembly 11 is used to heat-press the folded film 101 perpendicularly to the moving direction on the folded film 101 to form two heat-pressing and sealing edges.

[0035] The execution part of the cutter assembly 12 is directly opposite to the space between the two heat-pressed sealed edges, and cuts off the folded film 101 from between the two heat-pressed sealed edges.

[0036] During the bag making process, the free end of the folded film 101 is firstly continuously pulled by the bag pulling assembly 8, the folded film 101 is unwound from the folded film supply unit 1, and the free end of the folded film 101 passes through the heat pressing sealing assembly 11 and the cutting knife assembly 12.

[0037] Next, the hot-pressing sealing component 11 is operated to perform two vertical edge sealing on the folded film 101, and then the bag pulling component 8 pulls the folded film 101 to move a certain length (this length is the width of the produced medicine bag 9. At the same time, according to actual production needs, the length of the folded film pulled by the bag pulling component 8 can be adjusted to produce medicine bags 9 of different widths to meet production needs).

[0038] At the same time, the cutter assembly 12 cuts the folded film 101 in the middle of the two vertical edge seals, and so on and so forth, the bag pulling assembly 8 pulls the free end (already sealed) of the folded film 101 to move, the hot pressing sealing assembly 11 performs two vertical edge seals on the folded film, and the cutter assembly 12 cuts the folded film 101 in the middle of the two vertical edge seals, and the two edge seals are respectively located on the edge seals of the two adjacent front and rear medicine bags 9.

[0039] In summary, the hot-press sealing assembly 11 and the cutting assembly 12 can operate simultaneously, and two vertical edge seals and cuts are produced on the folded film 101 at the same time, thereby avoiding the cutting assembly 12 from pulling unbalancedly on one side of the folded film 101, and ensuring that the edge seal and cutting distances on both sides of the medicine bag 9 are the same.

[0040] In order to ensure that the folded film 101 always remains in a vertical and straight state when moving, and to avoid wrinkles on the finished medicine bag 9, especially when hot pressing and trimming are performed, a limiting component 3 is arranged between the folded film supply part 1 and the hot pressing and sealing assembly 11. The folded film 101 passes through the limiting component 3, and the limiting component 3 is used to limit the deviation of the side of the folded film 101 to keep the folded film 101 moving along a preset fixed path.

[0041] Specifically, the limiting component 3 is a plate-shaped, roller-shaped or block-shaped structure having a channel with a width equal to that of the folded film 101 . In practice, a suitable structure is adopted according to the material of the folded film 101 .

[0042] In this embodiment, a plurality of steering shafts 2 are provided on the travel path of the folded film 101, and the folded film 101 is further tensioned and guided by the steering shafts 2 to prevent the folded film 101 from becoming loose during transportation, and to limit the steering of the folded film 101 during transportation.

[0043] In one of the present embodiments, in order to enable the hot pressing and sealing component 11 to perform two vertical edge sealing on the folded film 101, the hot pressing and sealing component 11 has two hot pressing execution parts that can independently perform hot pressing, and each hot pressing execution part can at least form one hot pressing edge sealing at a different position on the folded film 101, that is, the two hot pressing execution parts can operate independently or synchronously, further improving the operability of the hot pressing and sealing component 11.

[0044] The cutter assembly 12 is used to cut off from two heat-pressed sealed edges.

[0045] The hot pressing execution part is located at the sealing plates on both sides of the folded film 101. At least one of the sealing plates is a hot pressing plate that can generate heat.

[0046] In another embodiment, in order to simplify the execution unit of the hot-pressing and sealing assembly 11 and the cutter assembly 12, two hot-pressing and sealing assemblies 11 are provided in this embodiment, and the two hot-pressing and sealing assemblies 11 are respectively provided on both sides of the cutter assembly 12;

[0047] The hot pressing sealing assembly 11 and the cutter assembly 12 are integrated together through the gasket 5, and the hot pressing execution parts of the two hot pressing sealing assemblies 11 and the cutters of the cutter assembly operate simultaneously, that is, the two hot pressing sealing assemblies 11 and the cutter assembly 12 operate simultaneously to perform two edge sealings and cut the folded film 101 at the same time.

[0048] Based on the above two embodiments, in order to change the length between the cutting edge and the sealing edge of the formed medicine bag 9, the distance between the cutter of the cutter assembly 12 and the hot pressing execution part of the hot pressing sealing assembly 11 can be adjusted, so that it can be adjusted synchronously according to the shape of the produced medicine bag.

[0049] In this embodiment, the above-mentioned bag pulling assembly 8 includes a film pulling guide rail base plate 6, on which an electrically controlled guide rail 7 is arranged, and a robotic claw is connected to the sliding end of the guide rail 7. The guide rail 7 drives the robotic claw to reciprocate along its length direction, and the robotic claw pulls the folded film 101 to move along a preset fixed path.

[0050] Among them: the opening, closing and motion control of the mechanical gripper and the guide rail 7 are communicated and connected with the external controller. The controller adopts a PLC controller. The mechanical gripper can adopt an existing two-finger electric mechanical gripper, and the mechanical gripper is driven to move through the guide rail 7. During this movement process, the moving distance is changed, thereby changing the production length of the medicine bag 9.

[0051] During the production of the medicine bag 9 , in order to enable the medicine bag 9 to be filled and formed, a bag-opening assembly 10 is further provided between the hot-pressing sealing assembly 11 and the bag-pulling assembly 8 , and the bag-opening assembly 10 is used to open and form the medicine bag 9 .

[0052] In this embodiment, the bag stretching assembly 10 includes a cylindrical former and a driving member for driving the cylindrical former to move. The cylindrical former can be any shape such as round, square, diamond, etc. The lower end of the cylindrical former is connected to a flat structure for easy insertion of the medicine bag 9. The cylindrical former of the bag stretching assembly 10 enters the medicine bag 9 from the opening of the medicine bag 9 so that the medicine bag 9 is stretched into a specified shape.

[0053] In order to make the inner wall of the medicine bag 9 completely fit with the cylindrical former when the medicine bag 9 is stretched, it is best to stretch the bag in a short time when the medicine bag 9 is heat-pressed and sealed. Therefore, it is necessary to stretch the medicine bag 9 when the edge is sealed and cut. The specific method is as follows:

[0054] The bag pulling assembly 8 moves the free end (with sealed edges) of the folded film 101 to the bottom of the bag supporting assembly 10, and the cylindrical former of the bag supporting assembly 10 moves down a certain distance. The flat structure of the cylindrical former enters the film edge opening of the folded film 101 and then stops. That is, at this time, the cylindrical former has not completely entered the film edge opening of the folded film 101.

[0055] Next, the folded film is vertically sealed at two edges by the hot-pressing sealing assembly 11. At the same time, the folded film is cut in the middle of the two vertical sealed edges by the cutting knife assembly 12. In this way, a complete medicine bag 9 is separated from the folded film. At this time, the cylindrical former of the bag-opening assembly 10 continues to move downward to fully open the medicine bag 9.

[0056] In order to enable the cylindrical former of the bag-supporting assembly 10 to accurately and quickly enter the film edge opening of the folded film 101, a film separation plate 4 is provided at the rear side of the limiting component 3, and the film separation plate 4 is provided at the film edge opening on the other side of the folded edge of the folded film 101;

[0057] After the folded film 101 moves through the film separation plate 4 , the film edge opening of the folded film 101 is separated by the film separation plate 4 , so that the cylindrical former of the bag support assembly 10 can quickly and accurately enter the film edge opening of the folded film 101 .

[0058] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A bag making device, characterized in that: The invention comprises a folding film supply unit (1), a heat-pressing sealing assembly (11) and a bag-pulling assembly (8) which are sequentially arranged along the moving direction of the folding film (101); a cutting knife assembly (12) is arranged on the side of the heat-pressing sealing assembly (11); the folding film (101) has a folded edge, and the folded edge is arranged along the moving direction; The bag pulling assembly (8) is used to clamp the end of the folded film and pull the folded film (101) to move along the moving direction; The heat-pressing and sealing component (11) is used to heat-press the folded film (101) perpendicularly to the moving direction on the folded film (101) to form two heat-pressing and sealing edges; The execution part of the cutter assembly (12) is directly opposite to the space between the two heat-pressed sealed edges, and cuts the folded film (101) from between the two heat-pressed sealed edges.

2. A bag making device according to claim 1, characterized in that: A limiting component (3) is provided between the folding film supply portion (1) and the heat-pressing sealing assembly (11), and the folding film (101) passes through the limiting component (3). The limiting component (3) is used to limit the deviation of the side of the folding film (101) so as to keep the folding film (101) moving along a preset fixed path.

3. A bag making device according to claim 2, characterized in that: The limiting component (3) is a plate-shaped, roller-shaped or block-shaped structure having a channel with a width equal to that of the folded film (101).

4. A bag making device according to claim 1, characterized in that: The heat-pressing sealing component (11) has two heat-pressing execution parts capable of independently performing heat-pressing, each of the heat-pressing execution parts being capable of at least forming a heat-pressing edge seal at a different position on the folded film (101), and the cutter component (12) being used to cut from the two heat-pressing edge seals; The hot pressing execution unit is located at the sealing plates on both sides of the folded film (101), and at least one of the sealing plates is a hot pressing plate capable of generating heat.

5. A bag making device according to claim 1, characterized in that: Two heat-compression sealing components (11) are provided, and the two heat-compression sealing components (11) are respectively provided on both sides of the cutter component (12); The heat-pressing sealing assembly (11) and the cutter assembly (12) are integrally combined via a cushion block (5), and the heat-pressing execution parts of the two heat-pressing sealing assemblies (11) and the cutters of the cutter assemblies operate simultaneously.

6. A bag making device according to claim 1, characterized in that: The bag pulling assembly (8) comprises a film pulling guide rail bottom plate (6), a guide rail (7) is arranged on the film pulling guide rail bottom plate (6), a mechanical gripper is connected to the sliding end of the guide rail (7), the guide rail (7) drives the mechanical gripper to move back and forth along its length direction, and the mechanical gripper pulls the folded film (101) to move along a preset fixed path.

7. A bag making device according to claim 6, characterized in that: A bag-stretching assembly (10) is provided between the heat-pressing sealing assembly (11) and the bag-pulling assembly (8), and the bag-stretching assembly (10) is used to stretch and shape the medicine bag (9).

8. A bag making device according to claim 7, characterized in that: The bag-stretching assembly (10) comprises a cylindrical former and a driving member for driving the cylindrical former to move. The lower end of the cylindrical former is connected to a flat structure for facilitating insertion of the medicine bag (9). The cylindrical former of the bag-stretching assembly (10) enters the medicine bag (9) through the opening of the medicine bag (9) so that the medicine bag (9) is stretched into a specified shape.

9. A bag making device according to claim 3, characterized in that: A film separation plate (4) is arranged on the rear side of the limiting component (3), and the film separation plate (4) is arranged at the film edge opening on the other side of the folded edge of the folded film (101) opposite to the folded edge; After the folded film (101) moves past the film separation plate (4), the film edge openings of the folded film (101) are separated by the film separation plate (4).

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