An eccentric shaft and die roll combination

Abstract

The utility model relates to a die -cutting equipment technical field especially relates to a kind of eccentric shaft and die cutting roller combination, eccentric shaft includes first shaft body and second shaft body, the first shaft body and second shaft body are connected by connecting shaft, the first shaft body and second shaft body are mutually parallel arrangement, the axis of the first shaft body and the axis of the second shaft body are mutually parallel arrangement, and with predetermined interval, the first shaft body is located the second shaft body upper. The scheme is by first shaft body and second shaft body of two not in the same axis, respectively connect upper die cutting roller and lower die cutting roller, the relative position of upper die cutting roller and lower die cutting roller is adjusted by rotating eccentric shaft, to ensure that upper die cutting roller and lower die cutting roller always keep parallel and alignment, and then improve the yield of die cutting.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting equipment technology, and in particular to a combination of an eccentric shaft and a die-cutting roller. Background Technology

[0002] The die-cutting mechanism is the core component of a die-cutting machine, mainly used for die-cutting (full cut, half cut), creasing, and hot stamping of non-metallic materials, self-adhesive labels, cardboard, etc. Its structural design directly affects die-cutting accuracy, efficiency, and ease of operation. The rotary die-cutting mechanism is an important type of die-cutting machine. Its die-cutting plate and pressure rollers are both cylindrical. During operation, the feed roller delivers the material between the die-cutting plate roller and the pressure roller, where they press against each other. One rotation of the die-cutting plate roller completes one die-cutting cycle. Because the rollers rotate continuously, its production efficiency is the highest among various die-cutting machines, making it suitable for mass production. The pressure rollers must be kept parallel and aligned to ensure a high yield rate of die-cut products.

[0003] Chinese patent CN202420260360.4 discloses a structure for solving the problem of liquid packaging material breakage, including an upper roller and a lower roller, which are assembled parallel to each other. Both sides of the upper and lower rollers are equipped with transmission blocks connected to a mounting frame. The surface of the upper roller has indentation lines, and these indentation lines are raised male molds. The surface of the lower roller is a recessed female mold. This structure improves upon ordinary indentation lines by milling the intersection (K-line) of the box-shaped male mold indentation lines using a CNC machine tool. The milling depth is 0.1 mm, and the length and slope of the milling are both 5 mm. However, the position between the upper and lower rollers in this design cannot be adjusted and needs further improvement.

[0004] This invention overcomes the shortcomings of the prior art by providing a combination of an eccentric shaft and a die-cutting roller, which can achieve fine adjustment of the die-cutting roller and ensure that the die-cutting roller is parallel and aligned. Utility Model Content

[0005] The main purpose of this utility model is to provide an eccentric shaft, including a first shaft and a second shaft, which are connected by a connecting shaft. The first shaft and the second shaft are arranged parallel to each other, and the axis of the first shaft and the axis of the second shaft are arranged parallel to each other and have a predetermined distance. The first shaft is located above the second shaft.

[0006] Optionally, both the first shaft and the second shaft are cylindrical structures, the connecting shaft is a multi-faceted column structure, the horizontal cross-section of the connecting shaft is a regular hexagon, the upper end face of the connecting shaft is connected to the first shaft, and the lower end face of the connecting shaft is connected to the second shaft.

[0007] Optionally, the end face of the first shaft is provided with a countersunk groove of a predetermined depth, and the first shaft, the second shaft, and the connecting shaft are provided with a through threaded connection channel.

[0008] Optionally, the distance between the axis of the first shaft and the axis of the second shaft is 0.23-0.26mm, the first shaft and the second shaft have the same size, with a diameter of 48-52mm and a thickness of 8-12mm, the thickness of the connecting shaft is 5-6mm, and the diameter of the threaded connection channel is 11-13mm.

[0009] This utility model also provides a die-cutting roller assembly, including the above-mentioned eccentric shaft, and further including an upper die-cutting roller and a lower die-cutting roller. The first shaft of the eccentric shaft is detachably connected to the upper die-cutting roller, and the second shaft of the eccentric shaft is detachably connected to the lower die-cutting roller. The parallel position between the upper die-cutting roller and the lower die-cutting roller can be adjusted by rotating the eccentric shaft.

[0010] Optionally, the upper die-cutting roller has upper end square posts at both ends, and the lower die-cutting roller has lower end square posts at both ends. The first shaft is connected to the upper die-cutting roller through the upper end square posts, and the second shaft is connected to the lower die-cutting roller through the lower end square posts.

[0011] Optionally, the upper end square column has a groove in the middle to accommodate the first shaft, and the lower end square column has a groove in the middle to accommodate the second shaft.

[0012] Optionally, the second shaft body and the lower end square post are fixedly connected by screws installed in the threaded connection channel, and the upper end square post and the lower end square post are fixedly connected by screws at both ends.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The eccentric shaft provided by this utility model connects the upper die-cutting roller and the lower die-cutting roller respectively through two shaft bodies, the first and the second, which are not on the same axis. By rotating the eccentric shaft, the relative positions of the upper and lower die-cutting rollers can be adjusted to ensure that the upper and lower die-cutting rollers always remain parallel and aligned, thereby improving the yield of die-cutting. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0015] Figure 1 This is a schematic diagram of an embodiment of the eccentric shaft of this utility model.

[0016] Figure 2This is a side view of an embodiment of the eccentric shaft of this utility model.

[0017] Figure 3 This is a schematic diagram of an embodiment of the die-cutting roller assembly of this utility model.

[0018] Figure 4 This is an exploded view of an embodiment of the die-cutting roller assembly of this utility model.

[0019] Figure label: 1-Eccentric shaft; 10-First shaft body; 11-Counterhead groove; 12-Threaded connection channel; 20-Second shaft body; 30-Connecting shaft; 2-Upper end square post; 3-Lower end square post; 4-Groove. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0021] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1-2 The diagram shown is a schematic representation of an embodiment of the eccentric shaft provided by this utility model.

[0024] Please refer to Figure 1-2 This embodiment is used to adjust the position of the upper and lower die-cutting rollers in a die-cutting device. It includes a first shaft 10 and a second shaft 20, which are connected by a connecting shaft 30. The first shaft 10 and the second shaft 20 are arranged parallel to each other, with the axis of the first shaft 10 and the axis of the second shaft 20 being parallel to each other and having a predetermined distance. The first shaft 10 is located above the second shaft 20. The first shaft 10 and the second shaft 20 are respectively connected to the upper die-cutting roller and the lower die-cutting roller. By rotating the eccentric shaft, the relative position of the upper and lower die-cutting rollers in the horizontal direction is adjusted, so that the upper and lower die-cutting rollers remain aligned and parallel.

[0025] In one embodiment, both the first shaft 10 and the second shaft 20 are cylindrical structures, and the connecting shaft 30 is a multi-faceted column structure with a horizontal cross-section of a regular hexagon. The upper end face of the connecting shaft 30 is connected to the first shaft 10, and the lower end face of the connecting shaft 30 is connected to the second shaft 20. The first shaft 10, the second shaft 20, and the connecting shaft 30 are integrally formed. The cylindrical structures of the first shaft 10 and the second shaft 20 allow the upper or lower die-cutting roller to rotate around its mounting point, and the multi-faceted column structure of the connecting shaft 30 allows for the rotation of the eccentric shaft after clamping and fixing.

[0026] In one embodiment, the end face of the first shaft 10 is provided with a countersunk groove 11 of a predetermined depth, and the first shaft 10, the second shaft 20, and the connecting shaft 30 are provided with a through threaded connection channel 12. By installing screws in the threaded connection channel, the lower die-cutting roller is fixedly connected. The countersunk groove 11 is used to accommodate the screw nut so as to prevent the screw from protruding from the end face of the first shaft 10 after installation.

[0027] In one embodiment, the distance between the center of the first shaft 10 and the center of the second shaft 20 is 0.23-0.26 mm. The first shaft 10 and the second shaft 20 have the same dimensions, with a diameter of 48-52 mm and a thickness of 8-12 mm. The connecting shaft 30 has a thickness of 5-6 mm, and the threaded connection channel 12 has a diameter of 11-13 mm. In this embodiment, the distance between the center of the first shaft 10 and the center of the second shaft 20 is preferably 0.25 mm. The first shaft 10 and the second shaft 20 have the same dimensions, with a diameter of 50 mm and a thickness of 10 mm. The connecting shaft 30 has a thickness of 5.5 mm, and the threaded connection channel 12 has a diameter of 12 mm.

[0028] like Figure 3-4 As shown, this utility model also provides an embodiment of a die-cutting roller assembly.

[0029] Please refer to Figure 3-4 This embodiment includes the eccentric shaft embodiment 1 described above, and further includes an upper die-cutting roller (not shown) and a lower die-cutting roller (not shown). The first shaft 10 of the eccentric shaft 1 is detachably connected to the upper die-cutting roller, and the second shaft 20 of the eccentric shaft 1 is detachably connected to the lower die-cutting roller. The parallel position between the upper and lower die-cutting rollers can be adjusted by rotating the eccentric shaft 1. The upper die-cutting roller (not shown) and the lower die-cutting roller (not shown) are conventional structures, and their structural principles can be specifically referred to in the prior art referenced in the background section.

[0030] In one embodiment, the upper die-cutting roller is provided with upper end square posts 2 at both ends, and the lower die-cutting roller is provided with lower end square posts 3 at both ends. The first shaft 10 is connected to the upper die-cutting roller through the upper end square posts 2, and the second shaft 20 is connected to the lower die-cutting roller through the lower end square posts 3.

[0031] Furthermore, the upper end square column 2 has a groove 4 in the middle to accommodate the first shaft 10, and the lower end square column 3 has a groove 4 in the middle to accommodate the second shaft 20. The shape and size of the groove 4 match the first shaft 10 and the second shaft 20, and it is a cylindrical groove structure.

[0032] The second shaft 20 and the lower end square post 3 are fixedly connected by screws installed in the threaded connection channel 12, and the upper end square post 2 and the lower end square post 3 are fixedly connected by screws at both ends.

[0033] The adjustment process of the upper and lower die-cutting rollers via the eccentric shaft 1 is as follows: First, determine and fix the position of the lower die-cutting roller, and install the second shaft 20 of the eccentric shaft 1 into the groove 4 of the lower end square post 3. Then, according to the required position of the upper die-cutting roller, rotate the eccentric shaft 1 to adjust the orientation of the first shaft 10. After confirming the position of the eccentric shaft 1, install the screw in the threaded connection channel 12 to fix the eccentric shaft 1 to the lower end square post 3. Next, align the groove 4 of the upper end square post 2 with the first shaft 10, and rotate the upper end square post 2 around the first shaft 10 to adjust the position of the upper die-cutting roller, so that the positions of the upper and lower die-cutting rollers are aligned. Specifically, this means that the female or male die on the surface of the upper die-cutting roller is aligned with the male or female die on the lower die-cutting roller. After alignment, fix the two sides of the upper end square post 2 to the two sides of the lower end square post 3 with screws to fix the positions of the upper and lower die-cutting rollers. If the upper and lower die-cutting rollers shift positions after working for a period of time, repeat the above steps to adjust their positions and keep them parallel and aligned.

[0034] In summary, the embodiments provided by this utility model connect the upper die-cutting roller and the lower die-cutting roller respectively through two first and second shafts that are not on the same axis. By rotating the eccentric shaft, the relative positions of the upper and lower die-cutting rollers are adjusted to ensure that the upper and lower die-cutting rollers always remain parallel and aligned, thereby improving the yield of die-cutting.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An eccentric shaft, characterized in that, It includes a first shaft and a second shaft, which are connected by a connecting shaft. The first shaft and the second shaft are arranged parallel to each other. The axis of the first shaft and the axis of the second shaft are arranged parallel to each other and have a predetermined distance. The first shaft is located above the second shaft.

2. The eccentric shaft according to claim 1, characterized in that, Both the first shaft and the second shaft are cylindrical structures, the connecting shaft is a multi-faceted column structure, the horizontal cross-section of the connecting shaft is a regular hexagon, the upper end face of the connecting shaft is connected to the first shaft, and the lower end face of the connecting shaft is connected to the second shaft.

3. The eccentric shaft according to claim 2, characterized in that, The end face of the first shaft is provided with a countersunk groove of a predetermined depth, and the first shaft, the second shaft, and the connecting shaft are provided with a through threaded connection channel.

4. The eccentric shaft according to claim 3, characterized in that, The distance between the center of the first shaft and the center of the second shaft is 0.23-0.26 mm. The first shaft and the second shaft have the same dimensions, with a diameter of 48-52 mm and a thickness of 8-12 mm. The thickness of the connecting shaft is 5-6 mm, and the diameter of the threaded connection channel is 11-13 mm.

5. A die-cutting roller assembly, characterized in that, The device includes the eccentric shaft as described in any one of claims 1-4, and further includes an upper die-cutting roller and a lower die-cutting roller. The first shaft of the eccentric shaft is detachably connected to the upper die-cutting roller, and the second shaft of the eccentric shaft is detachably connected to the lower die-cutting roller. The parallel position between the upper die-cutting roller and the lower die-cutting roller can be adjusted by rotating the eccentric shaft.

6. The die-cutting roller assembly according to claim 5, characterized in that, The upper die-cutting roller has upper end square posts at both ends, and the lower die-cutting roller has lower end square posts at both ends. The first shaft is connected to the upper die-cutting roller through the upper end square posts, and the second shaft is connected to the lower die-cutting roller through the lower end square posts.

7. The die-cutting roller assembly according to claim 6, characterized in that, The upper end square column has a groove in the middle to accommodate the first shaft, and the lower end square column has a groove in the middle to accommodate the second shaft.

8. The die-cutting roller assembly according to claim 7, characterized in that, The second shaft is fixedly connected to the lower end square post by screws installed in the threaded connection channel, and the upper end square post and the lower end square post are fixedly connected by screws at both ends.

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