Lower rotary folding device for a carton packer

Abstract

The utility model relates to tobacco packaging technical field discloses a lower rotary folding device of hard box packaging machine, including folding part, folding part is rectangular body setting, folding part includes adjacent first folding surface and second folding surface, adjacent first side and second side and oppositely arranged first end face and second end face, first folding surface is used for folding inner liner paper, second folding surface is used for assisting folding inner liner paper, the side of first folding surface and second folding surface is connected for first side, the side of first folding surface and first side is opposite for second side, the length of second side is less than the length of first side. When the folding part of the lower rotary folding device of hard box packaging machine is retracted, the contact surface between the lower rotary folding device and the inner liner paper gradually decreases, the friction between the lower rotary folding device and the inner liner paper also gradually decreases, and even no friction occurs. The folded inner liner paper will not be dragged back, thereby solving the problem of poor folding angle of the inner liner paper and ensuring the quality of the finished cigarette package.

Description

Technical Field

[0001] This utility model relates to the field of tobacco packaging technology, and in particular to a downward rotating folding device for a hard box packaging machine. Background Technology

[0002] The main function of a hard-pack packaging machine is to take cigarettes from the cigarette machine and pack them into groups of 20 (arranged in a 7-6-7 pattern). Then, wrap the cigarette groups with inner lining paper, inner frame paper, and label paper. After folding and gluing, a qualified hard-pack cigarette pack is formed. The cigarette pack is then transported to downstream machines for transparent paper packaging and carton transparent paper packaging.

[0003] The folding and forming of the inner lining paper is all completed on the No. 2 wheel. During the production process, it was found that when the rotary folder returns after completing the folding action, the working surface comes into contact with the inner lining paper and generates friction, causing the folded inner lining paper to be dragged outward. This results in asymmetrical corner forming after the end face of the inner lining paper is folded. If the area dragged back is large, there may even be wrinkles and damage to the inner lining paper corners and broken cigarette packs, and the quality of the finished product cannot be guaranteed.

[0004] Therefore, there is an urgent need to design a new downward rotating folding device for rigid box packaging machines to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to propose a lower rotating folding device for a hard box packaging machine to solve the technical problem that when the rotating folder returns after completing the folding action, the working surface comes into contact with the inner lining paper and generates friction, causing the folded inner lining paper to be dragged outward, resulting in asymmetrical folding of the inner lining paper, wrinkles and damage to the folded corners, and thus the finished product quality cannot be guaranteed.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a downward rotating folding device for a hard box packaging machine, comprising:

[0008] The folding part is rectangular in shape and includes an adjacent first folding surface and a second folding surface, an adjacent first side surface and a second side surface, and a first end surface and a second end surface that are opposite to each other. The first folding surface is used to fold the inner lining paper, and the second folding surface is used to assist in folding the inner lining paper. The side of the first folding surface connected to the second folding surface is the first side, and the side of the first folding surface opposite to the first side is the second side. The length of the second side is less than the length of the first side.

[0009] The first and second folding surfaces of the lower rotary folding device are the working surfaces. The first folding surface contacts the inner lining paper first, and the second folding surface then contacts the inner lining paper to assist in folding. The second side is the folding edge of the inner lining paper. The length of the second side is set to be less than the length of the first side. The first folding surface is smaller than the second folding surface, that is, the second folding surface is larger than the first folding surface. Therefore, when the folding operation is completed and the folding part retracts, the contact area between the lower rotary folding device and the inner lining paper gradually decreases, and the friction between the lower rotary folding device and the inner lining paper also gradually decreases, or even no friction occurs. The folded inner lining paper always remains in the mold box of the second wheel and will not be dragged back, thus solving the problem of poor folding of the inner lining paper and ensuring the quality of the finished cigarette pack.

[0010] In a preferred embodiment of the lower rotating folding device of a rigid box packaging machine, the length of the second side is x, and the length of the first side is x+1mm.

[0011] The length of the first side is set to be greater than that of the second side, so that the first folded surface is trapezoidal. The length difference between the second side and the first side is only 1mm. This can reduce the friction between the lower rotating folding device and the inner lining paper, and also ensure the normal folding of the inner lining paper by the folding part.

[0012] As a preferred embodiment of the lower rotating folding device of a rigid box packaging machine, the lengths of the first side and the second side are both less than the width of the mold box of the second wheel.

[0013] Ensure that the folding and retraction movements of the folding part do not generate friction with the inner wall of the mold box.

[0014] As a preferred embodiment of the downward rotating folding device of a rigid box packaging machine, the first folding surface and the first end face, as well as the first folding surface and the second end face, are both set at an angle, and the angle is an acute angle.

[0015] As a preferred embodiment of the downward rotating folding device of a rigid box packaging machine, the angles between the first folding surface and the first end face, and between the first folding surface and the second end face, are equal and the angles are 85°-89°.

[0016] The end of the folding part closest to the second wheel is larger than its opposite end. That is, when the folding part retracts, the end that comes out later is smaller than the end that comes out first. Its working principle is similar to the "draft" principle in the casting process of mechanical parts manufacturing, which greatly reduces the possibility of the inner lining paper being dragged outward by the folding part.

[0017] As a preferred embodiment of the downward rotating folding device of a rigid box packaging machine, the end face area of ​​the second end face is smaller than that of the first end face, and the first side face is set as an inclined plane.

[0018] As a preferred embodiment of the lower rotary folding device of a rigid box packaging machine, the lower rotary folding device further includes:

[0019] A rotating part, which is connected to the second end face, is used to drive the folding part to rotate.

[0020] The rotating part drives the folding part to rotate intermittently, so that part of the folding part intermittently extends into the mold box of the second wheel along with the rotation of the second wheel to fold the inner lining paper.

[0021] As a preferred embodiment of the lower rotating folding device of a rigid box packaging machine, the rotating part includes a connecting part, one end of which is connected to the first end face, and the other end of which is connected to a connecting rod via a connecting member. The end of the connecting rod that is not connected to the connecting part is connected to a driving member.

[0022] Because the drive end of the drive component is directly connected to the folding component, there will be interference with the second wheel. Therefore, a connecting part is set to connect the connecting rod and the folding part, and the output end of the drive component is connected to the connecting rod through the connecting rod, so as to achieve a reasonable layout.

[0023] As a preferred embodiment of the lower rotary folding device of a rigid box packaging machine, the lower rotary folding device is located on the outer periphery of the second wheel, and the driving component is used to drive the folding part to partially extend into the mold box of the second wheel to fold the inner lining paper.

[0024] The beneficial effects of this utility model are:

[0025] The first and second folding surfaces of the lower rotating folding device of the hard box packaging machine proposed in this utility model are the working surfaces. The first folding surface contacts the inner lining paper first, and the second folding surface then contacts the inner lining paper to assist in folding. The second side is the folding edge of the inner lining paper. The length of the second side is set to be less than the length of the first side. The first folding surface is smaller than the second folding surface, that is, the second folding surface is larger than the first folding surface. Therefore, when the folding operation is completed and the folding part retracts, the contact area between the lower rotating folding device and the inner lining paper gradually decreases, and the friction between the lower rotating folding device and the inner lining paper also gradually decreases, or even no friction occurs. The folded inner lining paper always remains in the mold box of the second wheel and will not be dragged back, thereby solving the problem of poor folding of the inner lining paper and ensuring the quality of the finished cigarette pack. Attached Figure Description

[0026] Figure 1 This is a partial structural schematic diagram of the lower rotary folding device and hard box packaging machine provided in this embodiment of the utility model;

[0027] Figure 2 This is a first structural schematic diagram of the folding part provided in an embodiment of the present utility model;

[0028] Figure 3This is a schematic diagram of the second structure of the folding part provided in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the third structure of the folding part provided in an embodiment of the present utility model.

[0030] In the picture:

[0031] 1. Folding section; 11. First folding surface; 111. First side; 112. Second side; 12. Second folding surface; 13. First side surface; 14. Second side surface; 15. First end face; 16. Second end face;

[0032] 2. Rotating part; 21. Connecting part; 22. Connecting rod; 23. Driving component. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] The hard-pack packaging machine takes cigarettes from the cigarette machine in groups of 20, wraps the cigarette group with inner lining paper, inner frame paper, and label paper, and then folds and glues them to form a qualified hard-pack cigarette bag. The cigarette bag is then conveyed to the downstream machine for transparent paper packaging and carton transparent paper packaging. The folding and forming of the inner lining paper is all completed on the No. 2 roller. During the production process, it was found that when the rotary folder returns after completing the folding action, the working surface comes into contact with the inner lining paper, and the friction causes the folded inner lining paper to be pulled outward. This results in asymmetrical corner forming after the two sides of the inner lining paper are folded. If the area pulled back is large, it may even result in wrinkles and damage to the inner lining paper corners, resulting in defective cigarette bags, and the quality of the finished product cannot be guaranteed.

[0038] To solve the above problems, combined with Figures 1-3 As shown, the lower rotating folding device of the hard box packaging machine provided in this embodiment is set on the outer periphery of the second wheel to fold the inner lining paper of the cigarette pack inside the mold box of the second wheel.

[0039] like Figure 1 As shown, the lower rotating folding device in this embodiment includes a folding part 1 and a rotating part 2, with the rotating part 2 connected to the folding part 1. As the second wheel rotates with a gap, each mold box on the outer periphery of the second wheel rotates to the folding part 1 one by one. The rotating part 2 drives the folding part 1 to rotate in coordination with the rotation gap of the second wheel, so as to fold the inner lining paper of the cigarette pack inside the mold box one by one.

[0040] Specifically, the rotating part 2 includes a connecting part 21, one end of which is connected to the first end face 15. For easy installation and disassembly, the connecting part 21 is provided with a mounting hole, and the end face of the folding part 1 is provided with a threaded hole. The shank of the locking bolt passes through the mounting hole and is threaded into the threaded hole until the head of the locking bolt is pressed against the connecting part 21. Installation and disassembly can be achieved by tightening the locking bolt with a tool. The structure is simple.

[0041] Furthermore, the other end of the connecting part 21 is connected to a connecting rod 22 via a connector, and the end of the connecting rod 22 not connected to the connecting part 21 is connected to a driving member 23. The connector is preferably a screw, and similarly, a threaded connection is used to facilitate easy installation and removal. Since a direct connection between the driving end of the driving member 23 and the folding part would interfere with the second wheel, the connecting part 21 is provided to connect the connecting rod 22 and the folding part 1, and the output end of the driving member 23 is connected to the connecting rod 22 via the connecting rod 22, thus achieving a reasonable layout.

[0042] like Figures 2-4As shown, the folding part 1 is rectangular in shape and includes adjacent first folding surfaces 11 and 12, adjacent first side surfaces 13 and 14, and oppositely arranged first end surfaces 15 and 16. The end surface area of ​​the second end surface 16 is smaller than that of the first end surface 15. The first side surface 13 is inclined, that is, the folding part 1 is trapezoidal. One end of the connecting part 21 is connected to the first end surface 15. The first folding surface 11 faces the second wheel and is used to fold the inner lining paper. The second folding surface 12 is used to assist in folding the inner lining paper. The side connecting the first folding surface 11 and the second folding surface 12 is the first side 111, and the side opposite the first folding surface 11 and the first side 111 is the second side 112. The length of the second side 112 is less than the length of the first side 111.

[0043] It is understandable that the first folding surface 11 and the second folding surface 12 of the lower rotating folding device are working surfaces. The first folding surface 11 contacts the inner lining paper first, and the second folding surface 12 then contacts the inner lining paper to assist in folding. The second side 112 is the folding edge of the inner lining paper. The length of the second side 112 is set to be less than the length of the first side 111, and the first folding surface 11 is less than the second folding surface 12, that is, the second folding surface 12 is greater than the first folding surface 11. Therefore, when the folding operation is completed and the folding part 1 retracts, the contact area between the lower rotating folding device and the inner lining paper gradually decreases, and the friction between the lower rotating folding device and the inner lining paper also gradually decreases, or even no friction occurs. The folded inner lining paper always remains in the mold box of the second wheel and will not be dragged back, thereby solving the problem of poor folding of the inner lining paper and ensuring the quality of the finished cigarette pack.

[0044] The length of the second side 112 is set to x, and the length of the first side 111 is x+1mm. The length of the first side 111 is x+1mm, and the length of the first side 111 is set to be greater than that of the second side 112, so that the first folding surface 11 is trapezoidal. The length difference between the second side 112 and the first side 111 is only 1mm, which can reduce the friction between the lower rotating folding device and the inner lining paper, and also ensure the normal folding of the inner lining paper by the folding part 1.

[0045] Furthermore, the lengths of both the first side 111 and the second side 112 are less than the width of the mold box of the second wheel. This ensures that the folding and retraction actions of the folding part 1 do not generate friction with the inner wall of the mold box.

[0046] In other embodiments, the length difference between the second side 112 and the first side 111 can be 0.5mm, 1.5mm or 2mm, etc., and this embodiment does not specifically limit it.

[0047] Furthermore, the first folding surface 11 and the first end face 15, as well as the first folding surface 11 and the second end face 16, are all set at an angle, and the angle is an acute angle. Preferably, the angles between the first folding surface 11 and the first end face 15, and between the first folding surface 11 and the second end face 16, are equal and the angle is 85°-89°. In this embodiment, the angle is 87.5°. This arrangement is to ensure that the end of the folding part 1 closest to the second wheel is larger than its opposite end, that is, when the folding part 1 performs a retraction action, the end that comes out later is smaller than the end that comes out first. Its working principle is similar to the "draft" principle in the casting process of mechanical parts manufacturing, which greatly reduces the possibility of the inner lining paper being dragged outward by the folding part 1.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lower rotating folding device for a rigid box packaging machine, characterized in that, include: Folding section (1), the folding section (1) is rectangular in shape, the folding section (1) includes adjacent first folding surface (11) and second folding surface (12), adjacent first side surface (13) and second side surface (14), and opposite first end surface (15) and second end surface (16). The first folding surface (11) is used to fold the inner lining paper, the second folding surface (12) is used to assist in folding the inner lining paper, the side of the first folding surface (11) connected to the second folding surface (12) is the first side (111), the side of the first folding surface (11) opposite to the first side (111) is the second side (112), and the length of the second side (112) is less than the length of the first side (111).

2. The lower rotary folding device of the hard box packaging machine according to claim 1, characterized in that, The length of the second side (112) is x, and the length of the first side (111) is x+1mm.

3. The lower rotary folding device of the hard box packaging machine according to claim 2, characterized in that, The lengths of the first side (111) and the second side (112) are both less than the width of the mold box of the second wheel.

4. The lower rotary folding device of the hard box packaging machine according to claim 1, characterized in that, The first folded surface (11) and the first end surface (15) and the first folded surface (11) and the second end surface (16) are both set at an angle and the angle is acute.

5. The lower rotary folding device of the hard box packaging machine according to claim 4, characterized in that, The angles between the first folded surface (11) and the first end face (15) and between the first folded surface (11) and the second end face (16) are equal and the angles are 85°-89°.

6. The lower rotary folding device of the hard box packaging machine according to claim 1, characterized in that, The end face area of ​​the second end face (16) is smaller than that of the first end face (15), and the first side face (13) is set as an inclined surface.

7. The lower rotary folding device of the hard box packaging machine according to claim 1, characterized in that, The lower rotary folding device further includes: Rotating part (2), which is connected to the second end face (16) to drive the folding part (1) to rotate.

8. The lower rotary folding device of the hard box packaging machine according to claim 7, characterized in that, The rotating part (2) includes a connecting part (21), one end of which is connected to the first end face (15), and the other end of which is connected to a connecting rod (22) via a connector. The end of the connecting rod (22) that is not connected to the connecting part (21) is connected to a driving member (23).

9. The lower rotary folding device of the hard box packaging machine according to claim 8, characterized in that, The lower rotating folding device is located on the outer periphery of the second wheel, and the driving member (23) is used to drive the folding part (1) to partially extend into the mold box of the second wheel to fold the inner lining paper.

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