GDX2 two-wheel aluminum foil paper forming device

Abstract

The utility model relates to GDX2 packing machine technical field, concretely relates to a kind of GDX2 two aluminium foil paper forming devices, including two wheel mould box and fixed folder, the two wheel mould box with the fixed folder is mutually embedded and is installed, both are installed on GDX2 second wheel by two wheel mould box;Two wheel mould box is equipped with assembly surface, the assembly surface is vertically equipped with columnar protrusion and wedge protrusion;The fixed folder is equipped with the recess that is embedded with the columnar protrusion and wedge protrusion on it.The utility model is improved the structure cooperation of mould box and folder and guide rail, can effectively constrain aluminium foil paper corner, prevent its in conveying process and lift up and collide guide rail, to solve the cigarette packet inner lining paper wrinkle and corner defect.

Description

Technical Field

[0001] This utility model relates to the technical field of GDX2 packaging machines, specifically to a GDX2 two-wheel aluminum foil forming device. Background Technology

[0002] In the packaging process of slim cigarettes, quality problems such as wrinkles or poor folding of the top and bottom corners of the aluminum foil lining paper inside the cigarette pack are prone to occur. According to the factory's quality statistics in 2024, out of 939 batches of cigarette packaging, 16 packs were found to have defects such as wrinkles and folds in the lining paper, a defect rate of approximately 0.12%. This proportion is relatively high among packaging defects, resulting in a significant gap between product quality and the "fine standard." Furthermore, correcting these defects in daily production requires frequent equipment adjustments, affecting equipment operating efficiency and increasing material waste. Therefore, it is imperative to improve the aluminum foil forming device to reduce these defects.

[0003] The GDX2 cigarette packaging machine is a widely used automated packaging equipment in the tobacco industry, primarily used for the automatic folding and forming of aluminum foil and label paper for cigarette packs. This equipment typically includes multiple continuously operating forming wheel systems, each responsible for a specific packaging process, such as cigarette feeding, initial folding and forming of aluminum foil, embedding of the inner frame paper, label paper wrapping, and sealing of the finished cigarette box. The two-wheel aluminum foil forming device of the GDX2 cigarette packaging machine includes components such as the mold box and fixed folding device at station number two, used to fold the aluminum foil lining paper to cover the outside of the cigarette pack. However, existing two-wheel aluminum foil forming devices have the following problems: When the aluminum foil cigarette pack is pushed out of the second-round mold box and conveyed through the second to third-round bridge, the approximately 15mm long folded corners of the aluminum foil at the top and bottom of the pack are not restrained by any components, making them prone to opening and curling up during conveying. The protrusions on the original second-round mold box were designed too high, limiting the adjustment space of the aluminum foil fixing folder and failing to ensure that the aluminum foil corners fold properly and pass smoothly through the guide rails during forming and conveying.

[0004] The main reason for the above problems is that the original design of the fixed folding mechanism only presses the top and bottom middle areas of the cigarette pack, leaving the approximately 15mm wide long-side folded corner on the left side of the top and bottom not against the fixed folding mechanism surface. Therefore, this unpressed corner cannot be fully flattened during the folding process, and the residual elastic tension causes it to spring back and curl up after forming. Under the tension of the aluminum foil itself, this curled corner exceeds the allowable space of the guide rail, resulting in a collision with the guide rail's working surface when the cigarette pack is transported along the rail. These factors directly lead to defective cigarette packs with wrinkled inner lining paper and deformed folded corners.

[0005] In view of the above, in order to overcome the above technical problems, this utility model designs a GDX2 two-wheel aluminum foil forming device, which solves the above technical problems. Summary of the Invention

[0006] The technical objective of this invention is to provide a GDX2 two-wheel aluminum foil forming device. By improving the structural coordination of the mold box, folder, and guide rail, it can effectively constrain the folding angle of the aluminum foil and prevent it from tilting and colliding with the guide rail during transportation, thereby solving the defects of wrinkles and folding angles in the inner lining paper of cigarette packs.

[0007] To achieve the above-mentioned technical objectives, this utility model provides the following technical solution: This utility model provides a GDX2 two-wheel aluminum foil forming device, including a two-wheel mold box and a fixed folding device. The two-wheel mold box and the fixed folding device are fitted together and installed on the GDX2 No. 2 wheel through the two-wheel mold box. The two-wheel mold box is provided with an assembly surface, and the assembly surface is provided with columnar protrusions and wedge-shaped protrusions vertically. The fixed folding device is provided with grooves that fit into the columnar protrusions and wedge-shaped protrusions.

[0008] Furthermore, the two-wheeled mold box has a mounting protrusion on one side opposite to the assembly surface, and an assembly slot is also provided on the assembly surface that penetrates the mounting protrusion. The assembly slot forms four corners on the assembly surface; the columnar protrusion and the wedge-shaped protrusion are symmetrically distributed in pairs at the corners.

[0009] Furthermore, the columnar protrusion has a first clearance portion on the side near the corner; the wedge-shaped protrusion has a second clearance portion on the side away from the corner.

[0010] Preferably, the columnar protrusion is a square column; the end of the wedge-shaped protrusion away from the corner is a plane, and the end near the corner is a slope.

[0011] Based on the above, the fixed folding device includes a guide rail block and a corner block. The guide rail mounting surface on the top surface of the guide rail block and the corner mounting surface on the bottom surface of the corner block are fitted together. The guide rail mounting surface and the corner mounting surface are stepped and interlocking. The top surface of the guide rail block is also provided with a guide rail working surface, which is higher than the guide rail mounting surface. The end of the guide rail working surface that connects to the guide rail mounting surface has a transition rounded corner.

[0012] Furthermore, the corner block is connected to a fitting block and a clearance block at both ends. A fitting groove is provided between the fitting block and the corner block, and a locking groove is provided between the clearance block and the corner block. The fitting block is close to the transition rounded corner.

[0013] Furthermore, the fitting block engages with the first clearance step, and the entire columnar protrusion engages with the fitting groove; the end of the wedge-shaped protrusion engages within the fitting groove.

[0014] Preferably, the height of the mating block is higher than the height of the guide rail working surface.

[0015] The beneficial effects of this utility model are as follows: 1. This utility model overcomes the shortcomings of existing equipment where the top and bottom corners of the aluminum foil cannot be fully folded and are restricted by optimizing the cooperation structure between the two-wheel mold box and the fixed folding device. The combination of columnar protrusions and wedge-shaped protrusions makes the installation of the fixed folding device more secure and convenient; while the newly added interlocking block on the left side of the fixed folding device, in conjunction with the guide rail working surface, not only ensures the fit and shaping of the aluminum foil corners during the forming process, but also avoids interference and conflict between the corners and the guide rail during subsequent conveying, thereby solving the problems of wrinkles and corner defects in the inner lining paper of cigarette packs.

[0016] 2. This utility model achieves full folding and constraint of the long side folding angles of the top and bottom of the aluminum foil by setting an interlocking block higher than the working surface of the guide rail on the left side of the fixed folding device. The height of the interlocking block can eliminate the problem of interference between the top and bottom folding angles of the aluminum foil and the working surface of the guide rail due to its own tension, significantly reducing the incidence of folding and wrinkling defects in the inner lining paper of slim cigarette packs, improving packaging quality and equipment operation stability, and meeting the requirements of high-quality cigarette packaging. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] The above and other aspects of the present invention will now be described by way of example only, with reference to the accompanying drawings, in which: Figure 1 This is a structural schematic diagram of the two-wheeled mold box of this utility model; Figure 2 This is a schematic diagram of the structure of the fixed folding device of this utility model; Figure 3 This is an assembly diagram of the present invention on the No. 2 rotating wheel; Figure 4 This is a utility model Figure 4 A plan view; Figure 5 This is an assembly diagram of the two-wheeled mold box and the fixed folding device of this utility model.

[0019] In the diagram: 1. Assembly surface; 2. Columnar protrusion; 3. Wedge-shaped protrusion; 4. Mounting protrusion; 5. Assembly slot; 6. Corner; 7. First clearance part; 8. Second clearance part; 9. Guide rail block; 10. Corner block; 11. Guide rail mounting surface; 12. Corner mounting surface; 13. Guide rail working surface; 14. Transition fillet; 15. Fitting block; 16. Clearance block; 17. Fitting groove; 18. Engaging groove. Detailed Implementation

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example 1: Based on the analysis of the original two-wheel mold box, the length of the protruding part of the two-wheel mold box is 11 mm, the highest part is 9 mm, and the lowest part is 5 mm. On this basis, cutting off part of the protrusion of the two wheels will not affect the overall forming function of the aluminum foil paper. At the same time, it is feasible to design the flat surface on the left side of the original aluminum foil paper fixing folder as a convex surface.

[0022] like Figure 1-4 As shown, this embodiment provides a GDX2 two-wheel aluminum foil forming device, applied to the second rotor of a GDX2 packaging machine, specifically including a two-wheel mold box and a fixed folding device. The two-wheel mold box and the fixed folding device are connected and installed by an interlocking method, and are fixed together on the second rotor of the GDX2 packaging machine. That is, specific protrusions on the two-wheel mold box are inserted into the corresponding grooves of the fixed folding device, thereby positioning and connecting the two components to achieve the synergistic effect required in the aluminum foil forming process. The two-wheel mold box is machined with an assembly surface 1 for installing the fixed folding device. Multiple protrusion structures for interlocking are vertically provided on the assembly surface 1, including a pair of columnar protrusions 2 and wedge-shaped protrusions 3.

[0023] In this embodiment, as Figure 1 As shown, a rectangular mounting slot 5 is preferably formed on the mounting surface 1, extending through to the mounting protrusion 4 on the other side of the mold box, thus forming four corner areas 6 on the mounting surface 1. Columnar protrusions 2 and wedge-shaped protrusions 3 are arranged at each corner 6, symmetrically distributed in pairs, meaning that adjacent corners 6 have a pair of protrusions. This effectively divides the original two-wheel mold box's boss structure into smaller protrusion units and removes unnecessary parts. Specifically, the two-wheel mold box in this embodiment reduces the protrusion volume by approximately two-thirds compared to the prior art, but still does not affect the overall forming function of the aluminum foil paper, while reserving space for the installation of the fixing folder.

[0024] Meanwhile, each columnar protrusion 2 and wedge-shaped protrusion 3 differs in cross-sectional shape and local details according to its position and function. The columnar protrusion 2 is preferably a square-section column structure with a first clearance portion 7 on the side near the corner 6 of the assembly slot 5. The function of the first clearance portion 7 is to provide space or allow room when installing the fixing folding device, allowing the corresponding component to be smoothly positioned. The wedge-shaped protrusion 3 is wedge-shaped, with a flat surface at the end away from the corner 6 and a beveled surface at the end near the corner 6, resembling a wedge block. A second clearance portion 8 is provided on the side of the wedge-shaped protrusion 3 away from the corner 6 to avoid interference during installation. Through the above structural design, the columnar protrusion 2 and wedge-shaped protrusion 3 form a corresponding engaging feature on the mold assembly surface 1: when the fixing folding device is installed on it, the columnar protrusion 2 on one side provides the main positioning support, while the wedge-shaped protrusion 3 on the other side provides a locking and fixing function.

[0025] In this embodiment, as Figure 2 As shown, the fixed folding device includes a guide rail block 9 and a corner block 10. The top surface of the guide rail block 9 has a guide rail mounting surface 11 for mounting the corner block 10; correspondingly, the bottom surface of the corner block 10 has a corner mounting surface 12 that fits against it. The guide rail mounting surface 11 and the corner mounting surface 12 adopt a stepped structure that interlocks with each other, that is, the joint interface between the two is a stepped shape with staggered heights, so that the corner block 10 can be stably positioned on the guide rail block 9. This stepped interlocking not only improves the installation accuracy but also increases the contact area of ​​the connecting surfaces, thereby enhancing the overall rigidity and stability of the fixed folding device.

[0026] The corner block 10 of the fixed folding device is provided with a groove that fits into the two-wheel mold box. The two-wheel mold box fits into the groove of the corner block 10 through the columnar protrusion 2 and the wedge-shaped protrusion 3 on it, thereby realizing the positioning and support of the columnar protrusion 2 on one side and the locking and fixing function of the wedge-shaped protrusion 3 on the other side.

[0027] Example 2: Based on Embodiment 1, this embodiment further extends the top surface of the guide rail block 9, in addition to the guide rail mounting surface 11, to form a raised guide rail working surface 13. The guide rail working surface 13 has a certain height difference relative to the guide rail mounting surface 11, and a transition rounded corner 14 is designed at the edge where the two connect to avoid the right-angled edges potentially scratching the high-speed moving aluminum foil. After the corner block 10 is installed on the guide rail mounting surface 11 of the guide rail block 9, its upper part forms a functional surface that participates in folding the top and bottom edges of the aluminum foil.

[0028] Two partial structures, a fitting block 15 and a clearance block 16, extend from both ends of the corner block 10. The fitting block 15 is formed by a protrusion near the transition rounded corner 14, with a width of 8 mm and a height of 9 mm. A fitting groove 17 is formed between the fitting block 15 and the main body of the corner block 10. The protrusion at the other end of the corner block 10 is called the clearance block 16, which forms a corresponding engaging groove 18 with the corner block 10. It can be understood that the two ends of the corner block 10 along its length, through the fitting block 15 and the clearance block 16, in conjunction with the columnar protrusion 2 and the wedge-shaped protrusion 3 on the two-wheel mold box, achieve rapid positioning and locking.

[0029] like Figures 3 to 5 As shown, when the fixed folding device is installed onto the two-wheel mold box, a precise connection is achieved through the cooperation of the aforementioned protrusion and slot structure. First, align the fitting block 15 of the fixed folding device with the first clearance portion 7 of the columnar protrusion 2 on the two-wheel mold box, insert the fitting block 15 into the clearance portion space, and allow the entire columnar protrusion 2 to enter the fitting groove 17 at the end of the corner block 10. At this time, the columnar protrusion 2 is contained in the fitting groove 17, and the fitting block 15 is close to the first clearance portion 7 of the columnar protrusion 2, achieving initial positioning. Subsequently, press down or screw the other end of the fixed folding device along the direction of the mold box assembly surface 1, so that the end of the wedge-shaped protrusion 3 slides into the locking groove 18 at the other end of the corner block 10. When the end of the wedge-shaped protrusion 3 is fully engaged in the locking groove 18, the fixed folding device is firmly fastened to the two-wheel mold box. Through the coordinated action of two pairs of structures—the columnar protrusion 2 / fitting groove 17 and the wedge-shaped protrusion 3 / locking groove 18—the fast loading and unloading and stable connection between the fixed folding device and the two-wheel mold box are achieved. The fitting block 15 engages with the first clearance portion 7 of the columnar protrusion 2 to provide support, while the wedge-shaped protrusion 3 provides locking by wedging itself within the locking groove 18, preventing the fixed folding device from loosening during equipment operation.

[0030] It is worth mentioning that in this embodiment, the height of the fixed folding device fitting block 15 is slightly higher than the height of the guide rail working surface 13 of the guide rail block 9 by about 0.5 mm. In other words, when the fixed folding device is installed in place, the left side fitting block 15 forms a slightly convex height difference relative to the guide rail working surface 13. This allows the top and bottom long side folds of the aluminum foil cigarette pack to be fully folded and compacted by the protruding part of the fixed folding device during the second-round molding and transfer, and to remain slightly higher than the guide rail surface. In this way, the fold that was originally suspended and unrestrained in the traditional structure is now effectively constrained between the protruding fixed folding device working surface and the guide rail working surface 13. The aluminum foil fold is completely folded and close to the guide rail, and will no longer bounce out of the space range of the guide rail due to its own tension, nor will it collide and rub against the working surfaces on both sides of the guide rail block 9 during the transport process.

[0031] Through the above improvements, the forming quality of the long side folds at the top and bottom of the aluminum foil paper is significantly improved, eliminating defects such as wrinkles in the inner lining paper and curling of the folds caused by incomplete folding. The structural design of this embodiment not only ensures the compatibility of the aluminum foil paper forming device with the original equipment, but also significantly improves the forming stability and packaging quality of the aluminum foil paper corners in slim cigarette packs. Actual testing showed that this improved structure effectively reduced the incidence of wrinkles and poor folding of the inner lining paper in slim cigarette packs, significantly decreasing the defect rate from 0.12%, demonstrating the outstanding effect of this invention in improving packaging quality and equipment operational stability.

[0032] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

[0033] Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims.

[0034] The above description is merely illustrative of this disclosure, and modifications may be made to the present invention in light of the above detailed description. The terminology used in the appended claims should not be construed as limiting the present invention to the specific embodiments disclosed in the specification. Rather, the scope of the present invention will be fully defined by the appended claims, which will be interpreted according to established principles of claim interpretation.

Claims

1. A GDX2 two-wheel aluminum foil forming device, characterized in that, It includes a two-wheeled mold box and a fixed folding device, wherein the two-wheeled mold box and the fixed folding device are fitted together and installed on the second wheel of GDX2 through the two-wheeled mold box; The two-wheeled mold box is provided with an assembly surface, on which columnar protrusions and wedge-shaped protrusions are vertically provided; the fixed folding device is engaged with the columnar protrusions and wedge-shaped protrusions through a groove opened thereon.

2. The GDX2 two-wheel aluminum foil forming device according to claim 1, characterized in that: The two-wheeled mold box has an installation protrusion on one side opposite to the assembly surface. The assembly surface also has an assembly slot that penetrates the installation protrusion, and the assembly slot forms four corners on the assembly surface. The columnar protrusion and the wedge-shaped protrusion are symmetrically distributed in pairs at the corners.

3. The GDX2 two-wheel aluminum foil forming device according to claim 2, characterized in that: The columnar protrusion has a first clearance portion on the side near the corner; the wedge-shaped protrusion has a second clearance portion on the side away from the corner.

4. The GDX2 two-wheel aluminum foil forming device according to claim 3, characterized in that: The columnar protrusion is a square column; the wedge-shaped protrusion has a flat end away from the corner and a sloped end near the corner.

5. The GDX2 two-wheel aluminum foil forming device according to any one of claims 3-4, characterized in that: The fixed folding device includes a guide rail block and a corner block. The guide rail mounting surface on the top surface of the guide rail block and the corner mounting surface on the bottom surface of the corner block are fitted together. The guide rail mounting surface and the corner mounting surface are stepped and interlocking. The top surface of the guide rail block is also provided with a guide rail working surface, which is higher than the guide rail mounting surface. The end of the guide rail working surface that connects to the guide rail mounting surface has a transition rounded corner.

6. The GDX2 two-wheel aluminum foil forming device according to claim 5, characterized in that: The corner block is connected to a fitting block and a clearance block at both ends. A fitting groove is provided between the fitting block and the corner block, and a locking groove is provided between the clearance block and the corner block. The fitting block is close to the transition rounded corner.

7. The GDX2 two-wheel aluminum foil forming device according to claim 6, characterized in that: The fitting block engages with the first clearance step, and the entire columnar protrusion engages with the fitting groove; the end of the wedge-shaped protrusion engages within the fitting groove.

8. The GDX2 two-wheel aluminum foil forming device according to claim 7, characterized in that: The height of the interlocking block is higher than the height of the working surface of the guide rail.

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