Film guide mechanism and plastic bag sleeving device

Abstract

The utility model discloses a film guide mechanism and a plastic bag sleeving device. A thin film guiding mechanism is arranged on a folded thin film conveying path and comprises a guiding piece extending into a folded thin film along an opening of the folded thin film, and the guiding piece comprises an upper guiding face attached to the inner wall of the upper side of the folded thin film and a lower guiding face attached to the inner wall of the lower side of the folded thin film. And the lower guide surface is attached to the inner wall of the lower side of the folded film.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag packaging, in particular to a film guiding mechanism and a plastic bag packaging device. Background Art

[0002] A plastic bag packaging device is a device that stacks a group of multiple plastic bags and then packages them with other packaging bags. In the prior art, a Chinese invention patent with the authorization announcement number CN103935567B and the name of "Plastic Bag Folding and Packing Machine" is used to fold plastic bags and then put them into packaging bags. Its core lies in sucking open a packaging bag in advance through a suction cup, and then laterally pushing the folded plastic bag into the packaging bag. The problem is that the suction cup that sucks open the packaging bag from the outside has a failure probability (unable to suck open), the overall efficiency is low, and the stable opening of the packaging bag cannot be guaranteed. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is, aiming at the above-mentioned existing technical deficiencies, to provide a film guiding mechanism. By separating the folded film along the folding position, it is convenient for the manipulator for packaging to extend into the film to open the film. Since the guiding mechanism is always inside the film, the film part is always separated by the guiding mechanism, avoiding the problem of the success probability of the suction cup adsorbing the film.

[0004] At the same time, a plastic bag packaging device is provided. By separating the film through the guiding mechanism and further cooperating with the conveying component, it is realized that the conveying component further drags the film separated by the guiding mechanism to the plastic bag conveying line, and further cooperates to convey the plastic bag along the position between the two side opening arms into the opened folded film. Through the reciprocating movement of the conveying component, the lateral conveying and use of the folded film are realized.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: the film guiding mechanism is arranged on the folding film conveying path, and the film guiding mechanism includes a guiding member extending into the folding film along the opening of the folding film. The guiding member includes an upper guiding surface that fits the upper inner wall of the folding film and a lower guiding surface that fits the lower inner wall of the folding film.

[0006] To further optimize the technical solution, the guiding member is an integral part, and its upper guiding surface and lower guiding surface are gradually separated along the film conveying direction.

[0007] To further optimize the technical solution, the guiding member includes a separately arranged upper guiding member and a lower guiding member. The upper guiding surface is arranged on the upper part of the upper guiding member, and the lower guiding surface is arranged on the lower part of the lower guiding member.

[0008] To further optimize this technical solution, the distance between the upper guiding member and the lower guiding member is adjustable. The upper guiding member or the lower guiding member is driven by a driving component to adjust the distance between the upper guiding member and the lower guiding member.

[0009] To further optimize this technical solution, the driving component is a cylinder, and the upper guiding member or the lower guiding member is arranged at the telescopic end of the cylinder.

[0010] A plastic bag sleeving device includes the film guiding mechanism as described above, and also includes a plastic bag conveying line and a folded film output device. The film guiding mechanism is arranged on the frame between the plastic bag conveying line and the folded film output device. There is also a conveying component reciprocating between the film guiding mechanism and the plastic bag conveying line. A hot press is also arranged on the conveying path of the film. The conveying component includes a set of opposing spreading arms. When the spreading arms are located within the guiding mechanism, they are positioned between the upper guiding surface and the lower guiding surface of the guiding member.

[0011] To further optimize this technical solution, the conveying component further includes a second driving mechanism arranged parallel to the conveying direction of the folded film to drive each spreading arm to move independently, and a first driving mechanism arranged perpendicular to the conveying direction of the folded film to drive the set of spreading arms and the second driving mechanism to move as a whole.

[0012] To further optimize this technical solution, the first driving mechanism includes a guide rail perpendicular to the conveying direction of the folded film arranged on the frame. An installation table is slidably arranged on the guide rail. A telescopic cylinder for driving the installation table to reciprocate along the guide rail is arranged between the frame and the installation table.

[0013] To further optimize this technical solution, the second driving mechanism includes a belt arranged on the installation table along the direction parallel to the conveying direction of the folded film. One side of the spreading arm is fixedly connected to the belt, and a motor for driving the belt to reciprocate is arranged on one side of the belt.

[0014] Compared with the prior art, the utility model has the following advantages: 1. A guide mechanism partially set in the folding film is adopted, and this structure advantageously ensures that the film must be separated by the guide mechanism, avoiding the problem of easy failure when adsorbing the film from the outside; 2. The guide mechanism is adopted to cooperate with the conveying mechanism, so that the expansion arm can be located in the guide mechanism on both sides, which is used to receive the film that has been separated by the guide mechanism; 3. A hot press is adopted to cooperate with the conveying mechanism, and this structure advantageously ensures that after the film is pulled laterally, one side of the film is hot-pressed and sealed by the hot press, thereby realizing the hot-pressing and sealing of the third side of the film, and at the same time, the expansion arm inserted into the guide mechanism next time can pull the subsequent folding film laterally along the closed third side; 4. When detachable upper and lower guide members are adopted, they cooperate with the hot press, and when the plastic film is hot-pressed and sealed, the upper and lower guide mechanisms are separated from each other, so that the film located at the hot press position is pulled away from the hot press, thereby avoiding the adhesion of the hot press and the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a film guiding mechanism.

[0016] Figure 2 It is a schematic diagram of the side structure of a film guiding mechanism.

[0017] Figure 3 The figure is a schematic diagram of the bottom structure of a plastic bag encapsulation device.

[0018] Figure 4 The figure is a schematic diagram of the structure of a mounting platform for a plastic bag packaging device.

[0019] In the figure: 1. guide member; 2. folding film; 3. upper guide member; 4. lower guide member; 5. drive assembly; 6. plastic bag conveyor line; 7. folding film output device; 8. frame; 9. hot cutter; 10. spreading arm; 13. guide rail; 14. mounting table; 15. telescopic cylinder; 16. belt; 17. motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] Specific implementation method: Combination Figures 1 - 4As shown, a film guide mechanism includes the film guide mechanism arranged on the conveying path of the folded film 2, the film guide mechanism includes a guide member 1 extending into the folded film 2 along the opening of the folded film 2, the guide member 1 includes an upper guide surface abutting against the upper inner wall of the folded film 2, and a lower guide surface abutting against the lower inner wall of the folded film 2. The guide member 1 includes an upper guide member 3 and a lower guide member 4 which are separately arranged, the upper guide surface is arranged on the upper guide member 3, the lower guide surface is arranged at the lower part of the lower guide member 4, the spacing between the upper guide member 3 and the lower guide member 4 is adjustable, the upper guide member 3 or the lower guide member 4 is driven by a driving component 5, so as to adjust the spacing between the upper guide member 3 and the lower guide member 4, the driving component 5 is a cylinder, and the upper guide member 3 or the lower guide member 4 is arranged at the telescopic end of the cylinder.

[0022] Combination Figures 1 - 4 As shown, a plastic bag wrapping device includes the above-mentioned film guiding mechanism, a plastic bag conveying line 6, which is a plastic bag wrapping assembly line, and a folding film output device 7, on which a rolled folding film is arranged for output use.

[0023] The film guide mechanism is arranged on a frame 8 between the plastic bag conveyor line 6 and the folded film output device 7, and also includes a transmission component that reciprocates between the film guide mechanism and the plastic bag conveyor line 6. A heat cutter 9 is also arranged on the film conveying path, and the transmission component includes a set of oppositely arranged spreading arms 10, and when the spreading arms 10 are located in the guide mechanism, they are located between the upper guide surface and the lower guide surface of the guide member 1.

[0024] The conveying assembly also includes a second driving mechanism 12 arranged parallel to the conveying direction of the folded film 2, driving each of the spreading arms 10 to move individually, and a first driving mechanism arranged perpendicular to the conveying direction of the folded film 2, driving a group of spreading arms 10 and the second driving mechanism to move as a whole. The first driving mechanism includes a guide rail 13 arranged perpendicular to the conveying direction of the folded film 2 on the frame 8, a mounting platform 14 is slidably arranged on the guide rail 13, and a telescopic cylinder 15 is arranged between the frame 8 and the mounting platform 14 to drive the mounting platform 14 to reciprocate along the guide rail 13

[0025] The second driving mechanism includes two groups of belts 16 arranged on the mounting platform 14 along a direction parallel to the conveying direction of the folded film 2. One side of each spreading arm 10 is fixedly connected to the belt 16. One side of the belt 16 is provided with a motor 17 for driving the belt 16 to reciprocate. Embodiment 1

[0026] like Figures 1 - 2As shown, a film guide mechanism includes the film guide mechanism arranged on the conveying path of the folded film 2, the film guide mechanism includes a guide member 1 extending into the folded film 2 along the opening of the folded film 2, the guide member 1 includes an upper guide surface abutting against the upper inner wall of the folded film 2, and a lower guide surface abutting against the lower inner wall of the folded film 2. The guide member 1 includes an upper guide member 3 and a lower guide member 4 which are separately arranged, the upper guide surface is arranged on the upper guide member 3, the lower guide surface is arranged at the lower part of the lower guide member 4, the spacing between the upper guide member 3 and the lower guide member 4 is adjustable, the upper guide member 3 is driven by a driving assembly 5, so as to adjust the spacing between the upper guide member 3 and the lower guide member 4, the driving assembly 5 is a cylinder, and the upper guide member 3 is arranged at the telescopic end of the cylinder. Embodiment 2

[0027] The guide member of the first embodiment is replaced with a fixed integral member, and the upper guide surface and the lower guide surface are gradually separated and arranged along the film conveying direction. (Not shown in the figure) Embodiment 3

[0028] Combination Figures 1 - 4 As shown, a plastic bag wrapping device includes the film guiding mechanism of the first embodiment, and also includes a plastic bag conveyor line 6, and a folded film output device 7. The film guiding mechanism is arranged on a frame 8 between the plastic bag conveyor line 6 and the folded film output device 7, and also includes a transmission component that reciprocates between the film guiding mechanism and the plastic bag conveyor line 6. A hot cutting machine 9 is also arranged on the film transmission path. The transmission component includes a group of opposing spreading arms 10. When the spreading arms 10 are located in the guiding mechanism, they are located between the upper guiding surface and the lower guiding surface of the guide member 1.

[0029] The conveying assembly also includes a second driving mechanism 12 arranged parallel to the conveying direction of the folded film 2, driving each of the spreading arms 10 to move individually, and a first driving mechanism arranged perpendicular to the conveying direction of the folded film 2, driving a group of spreading arms 10 and the second driving mechanism to move as a whole. The first driving mechanism includes a guide rail 13 arranged perpendicular to the conveying direction of the folded film 2 on the frame 8, a mounting platform 14 is slidably arranged on the guide rail 13, and a telescopic cylinder 15 is arranged between the frame 8 and the mounting platform 14 to drive the mounting platform 14 to reciprocate along the guide rail 13

[0030] The second driving mechanism includes two groups of belts 16 arranged on the mounting platform 14 along a direction parallel to the conveying direction of the folded film 2. One side of each spreading arm 10 is fixedly connected to the belt 16. One side of the belt 16 is provided with a motor 17 for driving the belt 16 to reciprocate.

[0031] Combination Figures 1 - 4As shown in the figure, during operation, the two spreading arms 10 are located at the position on the plastic bag conveying line 6. The folded film 2 has been pre-welded on one side by the side hot cutter 9. The telescopic cylinder 15 in the first driving mechanism drives the overall mounting table 14 to move away from the guiding member 1. Then, the motor 17 drives the belt 16 to rotate, so that the two spreading arms 10 are located on one side between the upper guiding member 3 and the lower guiding member 4. Then, the telescopic cylinder 15 in the first driving mechanism drives the overall mounting table 14 to move towards the guiding member 1, so that the two spreading arms 10 are inserted between the upper guiding member 3 and the lower guiding member 4. At this time, since one side of the folded film 2 has been pre-welded by the hot cutter 9, the motor 17 drives the belt 16, so that the spreading arms 10 pull the folded film 2 along the welding position and pull it onto the plastic bag conveying line 6. Since the two spreading arms 10 are controlled separately, a smaller space is required during insertion, but when spreading on the plastic bag conveying line 6, a larger distance can be achieved for spreading. After the plastic bag is inserted into the folded film 2 spread on the plastic bag conveying line 6 through the plastic bag conveying line 6, the hot cutter 9 moves downward, so that the folded film 2 is thermally cut and the two sides are respectively welded. For the folded film 2 located on the plastic bag conveying line 6, one side is naturally closed due to folding, and the other two sides are closed by welding with the hot cutter 9. The film on the other side is also cut and adhered by the hot cutter 9, facilitating the lateral pulling of the spreading arms 10 along the adhesion position next time.

[0032] The control method of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in the art. And the present utility model is mainly used to protect mechanical settings, so the control method and circuit connection of the present utility model will not be further explained in detail.

[0033] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

1. A film guiding mechanism, characterized in that: The film guide mechanism is arranged on a conveying path of the folded film (2), and comprises a guide member (1) extending into the folded film (2) along an opening of the folded film (2), and the guide member (1) comprises an upper guide surface abutting against an upper inner wall of the folded film (2), and a lower guide surface abutting against a lower inner wall of the folded film (2).

2. A film guiding mechanism according to claim 1, characterized in that: The guide member (1) is an integral component, and its upper guide surface and lower guide surface are gradually separated and arranged along the film conveying direction.

3. A film guiding mechanism according to claim 1, characterized in that: The guide member (1) comprises an upper guide member (3) and a lower guide member (4) which are separately arranged, the upper guide surface being arranged on the upper guide member (3), and the lower guide surface being arranged on the lower part of the lower guide member (4).

4. A film guiding mechanism according to claim 3, characterized in that: The distance between the upper guide member (3) and the lower guide member (4) is adjustable, and the upper guide member (3) or the lower guide member (4) is driven by a driving component (5) to adjust the distance between the upper guide member (3) and the lower guide member (4).

5. A film guiding mechanism according to claim 4, characterized in that: The driving assembly (5) is a cylinder, and the upper guide member (3) or the lower guide member (4) is arranged at the telescopic end of the cylinder.

6. A plastic bag wrapping device, comprising the film guiding mechanism according to any one of claims 1 to 5, further comprising a plastic bag conveying line (6), and a folded film output device (7), characterized in that: The film guide mechanism is arranged on a frame (8) between the plastic bag conveyor line (6) and the folded film output device (7), and also includes a transmission component that is reciprocating between the film guide mechanism and the plastic bag conveyor line (6). A heat cutter (9) is also arranged on the film transmission path. The transmission component includes a group of spreading arms (10) arranged opposite to each other. When the spreading arms (10) are located in the guide mechanism, they are located between the upper guide surface and the lower guide surface of the guide member (1).

7. A plastic bag encapsulating device according to claim 6, characterized in that: The conveying assembly further comprises a second driving mechanism (12) arranged parallel to the conveying direction of the folding film (2) and driving each of the spreading arms (10) to move individually, and a first driving mechanism arranged perpendicular to the conveying direction of the folding film (2) and driving a group of spreading arms (10) and the second driving mechanism to move as a whole.

8. The plastic bag encapsulating device according to claim 7, characterized in that: The first driving mechanism comprises a guide rail (13) arranged on the frame (8) and perpendicular to the conveying direction of the folded film (2); a mounting platform (14) is slidably arranged on the guide rail (13); and a telescopic cylinder (15) is arranged between the frame (8) and the mounting platform (14) for driving the mounting platform (14) to reciprocate along the guide rail (13).

9. The plastic bag encapsulating device according to claim 8, characterized in that: The second driving mechanism comprises two groups of belts (16) arranged on the mounting platform (14) in a direction parallel to the conveying direction of the folded film (2), one side of each spreading arm (10) is fixedly connected to the belt (16), and one side of the belt (16) is provided with a motor (17) for driving the belt (16) to reciprocate.

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