A spiral carton closing device for a cartoning machine

Abstract

A kind of packaging machine spiral cigarette case closing device, including pre-closing station, the inlet of pre-closing station is connected with spiral ware, spiral ware includes import baffle, edge pressing arc, pressure curved surface, support bottom surface, import baffle, edge pressing arc, support bottom surface between the surrounding area of pressure curved surface is set, pressure curved surface gradually curved surface is compressed downwards along edge pressing arc, pressure curved surface is used to extrude the long side of backing paper of cigarette case entering from suction backing paper station, import baffle is the outlet end of the cigarette case material of spiral ware, the long side of backing paper of cigarette case is extruded by pressure curved surface and makes its opening angle change from obtuse angle to acute angle.

Description

Technical Field

[0001] This invention relates to the field of cigarette box packaging technology, and more specifically to a spiral cigarette box closing device for a packaging machine. Background Technology

[0002] During the packaging process, the cigarette box is conveyed from the liner station to the pre-closing station. The box lid is folded by the spiral groove formed by guide rods A and B, and then fully closed at the full-closing station. However, during equipment production, the following problem was found during box closing: Figure 5 When the cigarette box shown is in the pre-closing station, the lid closes from 120° to 8°. Due to the rebound of the short side of the liner paper, the long side of the liner paper will press against the inner corner of the short side, causing interference. Figure 6 , Figure 7 The cigarette box has a defect where the short edge of the lining paper curls up after the box is closed. To address the current issues of curling edges and incomplete closure of the cigarette box, the closing mechanism needs to be improved.

[0003] Application publication number CN116062223A discloses an automatic box closing device and its closing method for packaging boxes. The box-flipping operation of the upper cover is divided into two steps: flipping up and closing down. The middle part and outer edge of the packaging box are pressed together in three steps. This fundamentally improves the problem of excessive pressing force in traditional box closing devices that aim to close the box in one step. It helps to reduce damage to the packaging box and improve the smoothness of the connection during the closing process, thereby improving the packaging quality.

[0004] Application publication number CN219029856U discloses a self-operated box closing device. It drives the conveying component, the box opening mechanism, and the page closing mechanism through the same drive spindle, which improves the coordination performance of each mechanism and improves the accuracy and efficiency of closing the packaging box. It drives the side page closing mechanism, the tongue pressing mechanism, the tongue adjusting mechanism, and the tongue closing mechanism to work simultaneously through the same spline shaft and the first cam, so as to accurately cooperate to close the packaging box.

[0005] The existing technology described above cannot overcome the aforementioned technical defects, therefore technical improvements are needed to solve the aforementioned difficulties. Summary of the Invention

[0006] In view of this, and in light of the shortcomings of the prior art, the purpose of this invention is to provide a spiral cigarette box closing device for packaging machines, which solves the problems of cigarette box edge curling and incomplete cigarette box closing in the prior art.

[0007] In response to the frequent occurrences of curling edges of the liner paper and incomplete closure of cigarette boxes in existing side-opening packaging equipment during production, a guiding device designed based on the closing action is proposed through analysis of the operation and folding state of the small boxes.

[0008] This application differs from the original direct-action mechanical guide rod structure, innovatively adopting a non-linear folding spiral structure; by reducing the running resistance of the small box, it avoids the phenomenon of the liner paper easily rebounding on the short side after folding and causing the edge to curl up, and eliminates the phenomenon of cigarettes jumping out due to the cigarette box bouncing, resulting in the cigarette box not closing properly; ensuring the stability of equipment operation and improving practical efficiency.

[0009] The technical solution adopted in this invention is as follows: To achieve the above-mentioned objectives and other related objectives, the following technical solution is provided:

[0010] A spiral cigarette box closing device for a packaging machine includes a pre-closing station. A spiral device is connected to the inlet of the pre-closing station. The spiral device includes an inlet baffle, a pressing arc, a pressing curved surface, and a supporting bottom surface. The pressing curved surface is set in the area enclosed between the inlet baffle, the pressing arc, and the supporting bottom surface. The pressing curved surface is gradually compressed downward along the pressing arc. The pressing curved surface is used to squeeze the long side of the cigarette box liner paper entering from the liner paper suction station. The inlet baffle is the outlet end of the cigarette box material of the spiral device. The pressing curved surface squeezes the long side of the cigarette box liner paper so that its opening angle changes from an obtuse angle to an acute angle.

[0011] The technical solution provided in this application also has the following technical features:

[0012] Preferably, the pre-closing box station is located between the full-closing box station and the absorbent paper station.

[0013] Preferably, a full-closing rod is provided at the full-closing station, and a pre-closing rod is provided at the pre-closing station.

[0014] Preferably, the opening angle of the long side of the lining paper of the cigarette box after the curved surface is squeezed is 15-50°.

[0015] Preferably, the opening angle of the long side of the lining paper of the cigarette box after the curved surface is squeezed is 25°.

[0016] Preferably, the guide surface is a triangular surface.

[0017] Preferably, the guide surface is a plane.

[0018] The beneficial effects of this invention are as follows: This application proposes a technical solution for a spiral cigarette box closing device for packaging machines, which aims to solve the problems of cigarette boxes curling up and not closing properly during the packaging process;

[0019] This invention uses a screw conveyor to compress the long side of the liner paper to create a closing action, and has the following characteristics:

[0020] 1. This invention addresses the problem of curling edges in cigarette boxes by squeezing the long side of the lining paper, thereby reducing the tendency of the lining paper to spring back after folding and causing curling edges.

[0021] 2. Regarding the accuracy of closing the cigarette box, this invention proposes to change the opening angle of the liner paper, thereby eliminating the phenomenon of the cigarette box not closing properly due to the jumping of the cigarette box;

[0022] 3. This invention improves the stability of production equipment. Compared with the original closing action of guide rods A and B, the closing action is completed by the screw extruder pressing the cigarette box as it moves along the workstation. This can adapt to the production of large batches of cigarette boxes at high flow rates, thus improving actual production efficiency. Compared with guide rods A and B, the closing action is more reliable. This is because the curved surface extrusion has a larger extrusion area than that using guide rods A and B, making the closing action more reliable and accurate. Attached Figure Description

[0023] Figure 1 This is a perspective view of a spiral cigarette box closing device for a packaging machine according to the present invention;

[0024] Figure 2 This is a perspective view of a spiral cigarette box closing device for a packaging machine according to the present invention;

[0025] Figure 3 This is a perspective view of the spiral mechanism of a spiral cigarette box closing device for a packaging machine according to the present invention;

[0026] Figure 4 This is a schematic diagram of the process for a spiral cigarette box closing device for a packaging machine according to the present invention;

[0027] Figure 5 This is a schematic diagram of the process of existing technology;

[0028] Figure 6 A three-dimensional view of a cigarette box with its casing closed, based on existing technology;

[0029] Figure 7 A three-dimensional view of a cigarette box with its casing closed, based on existing technology;

[0030] Figure 8 A three-dimensional view of a cigarette box with its casing closed, based on existing technology;

[0031] In the picture:

[0032] 1. Full-closing box station

[0033] 2. Pre-closing box station

[0034] 3. Spiral

[0035] 6. Liner paper suction station

[0036] 7. Cigarette boxes

[0037] 71. Long side of the backing paper

[0038] 72. Short side of the backing paper

[0039] 73. Interference Location

[0040] 11. Fully closed box lever

[0041] 21. Pre-close box lever

[0042] 31. Import baffle

[0043] 32. Edge pressing arc

[0044] 33. Pressed curved surface

[0045] 34. Supporting the bottom surface

[0046] 51. Guide rod A

[0047] 52. Guide rod B. Detailed Implementation

[0048] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0049] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] like Figure 1-3A spiral cigarette box closing device for a packaging machine includes a pre-closing station 2. A spiral device 3 is connected to the inlet of the pre-closing station 2. The spiral device 3 includes an inlet baffle 31, a pressing arc 32, a pressing curved surface 33, and a supporting bottom surface 34. The pressing curved surface 33 is provided in the area enclosed between the inlet baffle 31, the pressing arc 32, and the supporting bottom surface 34. The pressing curved surface 33 is gradually compressed downward along the pressing arc 32. The pressing curved surface 33 is used to squeeze the long side of the cigarette box liner paper entering from the liner paper suction station 6. The inlet baffle 31 is the outlet end of the cigarette box material of the spiral device 3. The pressing curved surface 33 squeezes the long side of the cigarette box liner paper so that its opening angle changes from an obtuse angle to an acute angle.

[0053] This application has the following key technical features:

[0054] The screw mechanism includes an inlet baffle, a pressing arc, a pressing surface, and a supporting bottom surface. The inlet baffle is the outlet end of the screw mechanism, and the pressing surface gradually curves downward to compress the long edge of the cigarette box liner paper.

[0055] The spiral structure forms a curved surface, which is used to compress the long edge of the liner paper entering the cigarette box from the liner paper suction station, changing it from an obtuse angle to an acute angle.

[0056] Location settings: The pre-closing box station is set between the full-closing box station and the absorbent paper station. The full-closing box station is equipped with a full-closing box rod, and the pre-closing box station is equipped with a pre-closing box rod.

[0057] This device has a simple and novel overall structure, is easy to operate, and is highly practical. In practical applications, it can completely solve the problem of cigarette box edge curling and avoid the risk of equipment damage caused by improper closing of cigarette box. It effectively improves production efficiency and product quality and has great potential for widespread application in factories.

[0058] Specifically, such as Figure 1-4 The pre-closing station 2 is located between the full-closing station 1 and the liner station 6; the full-closing station 1 is equipped with a full-closing rod 11, and the pre-closing station 2 is equipped with a pre-closing rod 21; the opening angle of the long side of the liner of the cigarette box after being squeezed by the curved surface 33 is 15-50°; the opening angle of the long side of the liner of the cigarette box after being squeezed by the curved surface 33 is 25°; the guide baffle 31 is a triangular surface; the guide baffle 31 is a plane; the upper end surface of the guide baffle 31 is parallel to the supporting bottom surface 34, and the upper end surface of the guide baffle 31 is equipped with mounting holes;

[0059] The technical solution of the spiral cigarette box 7 closing device of the packaging machine in this application effectively solves the problem of edge curling of cigarette box 7 during the packaging process through the innovative design of non-linear folding spiral structure, and improves the stability of the equipment and the packaging quality.

[0060] like Figure 5The original process flow, such as Figure 6 , Figure 7 For the existing production equipment, the original guide rods A51 and B52 were replaced with a screw 3. The cigarette box 7 was closed from 170° to 25° by a screw closing method. During this process, the long side 71 of the lining paper pressed down the folded short side 72 of the lining paper in advance to prevent the edge from curling due to the short side 72 of the lining paper rebounding.

[0061] The original guide rods A51 and B52 were replaced with a spiral box closer. As the cigarette box 7 closes from 170° to 25° through the spiral box closer, the short side 72 of the lining paper, which was folded in advance by the long side 71, is effectively pressed down, which solves the problem of edge curling caused by the short side 72 of the lining paper rebounding and the problem of the cigarette box 7 not closing properly.

[0062] The cigarette box 7 is conveyed from the liner paper feeding station 6 to the pre-closing station 2. The lid of the cigarette box 7 is closed from 170° (open) to 120° (pre-closing) via a spiral groove formed by guide rods A51 and B52. Then, the pre-closing rod 21 closes the lid to 8°. Finally, at the full-closing station 1, the lid is completely closed. At the pre-closing station 2, the lid closes from 120° to 8°. Because the closing angle is too large, the short side 72 of the liner paper rebounds, and the long side 71 of the liner paper presses against the inner corner of the short side. Figure 8 Interference occurs, as seen at interference position 73. After the cigarette box 7 is closed, the short side 72 of the lining paper will show a curling defect. The original guide rods A51 and B52 have been replaced with a spiral-shaped closing mechanism. Figure 1-3 The cigarette box 7 is closed from 170° to 25° using a spiral closing method. During this process, the long side 71 of the lining paper presses down the folded short side 72 of the lining paper in advance. When the box is closed at the pre-closing station 2, the lid is closed from 25° to 8°. This avoids the phenomenon of the short side 72 of the lining paper springing back due to the excessive closing angle, and fundamentally and completely solves the problem of edge curling caused by the springing back of the short side 72 of the lining paper.

[0063] like Figure 6 , 7 As shown in Figures 8 and 9, there may be instances of cigarettes jumping out of the cigarette box 7 or affecting the closing of the box. The cigarette box 7 cannot be completely closed, causing blockage between the cigarette box 7 and the fixing strip, which can easily damage the mold box and the mold box conveyor belt of the equipment.

[0064] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A spiral cigarette box closing device for a packaging machine, comprising a pre-closing station (2), characterized in that, The entrance of the pre-closing station (2) is connected to a screw (3). The screw (3) includes an inlet baffle (31), a pressing arc (32), a pressing surface (33), and a supporting bottom surface (34). The pressing surface (33) is set in the area enclosed between the inlet baffle (31), the pressing arc (32), and the supporting bottom surface (34). The pressing surface (33) is gradually compressed downward along the pressing arc (32). The pressing surface (33) is used to squeeze the long side of the lining paper of the cigarette box that enters from the lining paper suction station (6). The inlet baffle (31) is the outlet end of the cigarette box material of the screw (3). The pressing surface (33) is used to squeeze the long side of the lining paper of the cigarette box. The opening angle of the long side of the lining paper of the cigarette box after squeezing is 25°-50°.

2. The spiral cigarette box closing device for a packaging machine as described in claim 1, characterized in that, The pre-closing box station (2) is located between the full-closing box station (1) and the paper suction station (6).

3. The spiral cigarette box closing device for a packaging machine as described in claim 1, characterized in that, A full-closing rod (11) is provided at the full-closing station (1), and a pre-closing rod (21) is provided at the pre-closing station (2).

4. The spiral cigarette box closing device for a packaging machine as described in claim 1, characterized in that, The import baffle (31) is a triangular surface.

5. The spiral cigarette box closing device for a packaging machine as described in claim 1, characterized in that, The guide surface (31) is a plane.

6. The spiral cigarette box closing device for a packaging machine as described in claim 1, characterized in that, The upper end face of the guide stop (31) is parallel to the support bottom face (34), and an installation hole is provided on the upper end face of the guide stop (31).

Images