Printing cutter assembly

Abstract

The present invention discloses a printing cutter assembly, which includes a tool holder. Corresponding to the part to be cut, the tool holder is equipped with several groups of double cutters arranged in parallel and at intervals. Adjacent double cutters are abutted and cooperated with each other and are detachably arranged. The cutter on the inner side protrudes from the cutter on the outer side and can slide in the cutting direction to be flush with the cutting edge of the outer cutter, so as to slide upward and cut normally when contacting the printing substrate to be cut; and a downward pushing and discharging mechanism is arranged in the gap inside the same group of double cutters. The downward pushing and discharging mechanism is linked with the inner cutter and moves downward backward during the upward sliding process of the inner cutter, playing a role of downward pushing and discharging. The printing cutter assembly of the present invention adopts the form of a double cutter that is fitted and separable for the cutting surface, which can increase the sharpness of the cutting edge and is also convenient for maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and particularly to a printing cutter assembly. Background Art

[0002] For paper substrates such as cardboard or carton paper, etc., after printing, they all need to be cut (die-cut) according to a set graphic interface. For example, in the die-cutting of hangtags, generally when designing the printing interface, the cutting edges are reserved. In traditional die-cutting knives, the cutting knives in the cutting unit are arranged in a rectangular shape, and the whole sheet of paper is divided by a stamping cutting method. The die-cutting tool is in the form of a single-piece blade, and there is only one cutting mark when cutting, which is not suitable for substrates such as cardboard with a relatively wide cutting boundary; in addition, when cutting thick paper sheets, in order to ensure the strength of the cutting knife, the cutting edge is generally relatively thick, and the cutting effect is not good, and burrs are likely to appear on the edge of the cutting mark. At the same time, general die-cutting tools are generally integral, and the whole set of tools needs to be directly replaced when replacing. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems in the related art to some extent. For this reason, an object of the present invention is to provide a printing cutter assembly, the cutting surface of which adopts a form of double cutting knives that are fitted and separable, which can increase the sharpness of the cutting edge and is also convenient for maintenance.

[0004] The technical solution of the present invention is as follows:

[0005] A printing cutter assembly includes a tool holder. The tool holder is equipped with a plurality of groups of double cutting knives that are arranged in parallel and spaced apart corresponding to the part to be cut. The adjacent double cutting knives are abutted and cooperated with each other, and are detachably arranged. The inner cutting knife protrudes from the outer cutting knife and can slide in the cutting direction to be flush with the cutting edge of the outer cutting knife, so as to slide upward and cut normally when contacting the substrate to be cut; and a downward pushing and discharging mechanism is arranged in the gap inside the same group of double cutting knives. The downward pushing and discharging mechanism is linked with the inner cutting knife and moves backward and downward during the upward sliding process of the inner cutting knife, playing a role of downward pushing and discharging.

[0006] Further, there are four groups of tool holders, which are enclosed in a rectangular shape.

[0007] Further, a cutting knife one and a cutting knife two are respectively assembled in adjacent tool holders. An assembly groove is formed on one side of the cutting knife one, and a partition block is formed in the middle of the assembly groove to form an assembly space for the adjacent cutting knife two, and a lapping part is correspondingly formed on one side of the cutting knife one for lapping and abutting in the assembly space.

[0008] Further, assembly holes are opened in the middle of the cutting knife one and the cutting knife two, and mounting holes corresponding to the assembly holes are arranged on the tool holder for the fastening installation of the cutting knives.

[0009] Further, a matching cutter groove is formed on the inner side of the tool rest corresponding to the cutting tool.

[0010] Further, the cutting edge of the cutting tool is formed into a serrated shape.

[0011] Further, the downward pushing and discharging mechanism includes the inner side of the side cutting tool and is limited in the upward direction. A connecting rod arranged downward is also fixed at the end side limited by the elastic member for connecting the downward pushing rod.

[0012] Further, a limiting block is arranged corresponding to the inner side of the cutting tool on the outer side for restricting the movement of the end side of the elastic member.

[0013] Further, a limiting groove is formed at the bottom of the limiting block for restricting the upward movement of the end part of the elastic member together.

[0014] Further, an activity gap is formed in the middle of the assembly hole on the inner cutting tool. The width of the activity gap matches the outer diameter of the connecting shaft of the tool rest. A cutting tool activity gap is arranged at the top of the cutter groove in the tool rest.

[0015] The beneficial effects in the present invention: By adopting the double cutting tool arrangement, the thickness of a single cutting tool can be reduced to a certain extent, and the smoothness of the cutting part can be improved; the inner cutting tool protrudes slightly from the outer cutting tool and can slide to be flush with the cutting edge of the outer cutting tool in the cutting direction. A downward pushing and discharging mechanism is arranged in the gap between the inner sides of the same group of double cutting tools. The downward pushing and discharging mechanism is linked with the inner cutting tool and moves downward after moving upward along with the inner cutting tool, playing a role in downward pushing and discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the printing cutter assembly proposed by the present invention (the tool rest at the second cutting tool is omitted);

[0018] Figure 2 is a schematic structural diagram of the first cutting tool;

[0019] Figure 3 is a schematic structural diagram of the second cutting tool;

[0020] Figure 4 is a schematic structural diagram of the cooperation between the tool rest and the second cutting tool;

[0021] Figure 5 is a schematic diagram of an improved scheme of the cutting edge of the cutting tool;

[0022] Figure 6 is a schematic diagram of the displaceable scheme of the inner cutting tool;

[0023] Figure 7 is Figure 6 a schematic structural diagram of the corresponding cutting tool assembly;

[0024] Figure 8 is Figure 6 a schematic structural diagram of the first middle cutting tool;

[0025] Figure 9 is Figure 6 a schematic structural diagram of the second middle cutting tool.

[0026] In the figure: 1 - tool holder; 11 - cutting tool groove; 12 - cutting tool moving gap; 2 - the first cutting tool; 21 - assembly groove; 22 - separating block; 3 - the second cutting tool; 31 - overlapping part; 4 - assembly hole; 41 - moving gap; 5 - cutting teeth; 6 - elastic part; 7 - limiting block; 71 - limiting groove; 8 - connecting rod; 9 - lower push rod. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0029] Embodiment 1

[0030] Referring to Figures 1 - 4 , a printing cutting tool assembly includes a tool holder 1. The tool holder 1 is assembled with several groups of double cutting tools arranged in parallel and spaced apart corresponding to the part to be cut. In this example, each group of double cutting tools is vertically arranged, and adjacent double cutting tools are in abutting cooperation and are detachably arranged.

[0031] Specifically, there are four groups of tool holders 1, which enclose a rectangular shape. The first cutting tool 2 and the second cutting tool 3 are respectively assembled in adjacent tool holders 1. An assembly groove 21 is formed on the end side of the first cutting tool 2, and a separating block 22 is formed in the middle of the assembly groove 21 (corresponding to the thickness of the second cutting tool 3) to form an assembly space for adjacent second cutting tools 3, and an overlapping part 31 is correspondingly formed on the end side of the first cutting tool for overlapping and abutting in this assembly space; Assembly holes 4 are opened in the middle of the first cutting tool 2 and the second cutting tool 3, and mounting holes are provided on the tool holder 1 corresponding to the assembly holes 4 for firmly installing the cutting tools.

[0032] At the same time, a matching cutting tool groove 11 is formed on the inner side of the tool holder 1 corresponding to the cutting tool, and a connecting shaft is passed through the mounting hole on the tool holder 1 (threads for fastening can be provided on the end side for fastening).

[0033] The double cutting knife is provided, which can reduce the thickness of a single cutting knife to a certain extent and improve the smoothness of the cutting part.

[0034] Embodiment 2

[0035] Refer to Figure 5 , the edge of the cutting knife is formed into a serrated shape, and a number of cutting teeth 5 are arranged at equal intervals on the edge, and the edge of the cutting teeth 5 is processed into a cutting edge. It is convenient to cut after piercing the printing material.

[0036] Embodiment 3

[0037] Refer to Figures 6 - 9 , the inner cutting knife is slightly protruding from the outer cutting knife and can slide in the cutting direction to be flush with the edge of the outer cutting knife, so that when contacting the printing material to be cut, it can slide upward and cut normally; and a downward pushing and discharging mechanism is arranged in the gap inside the same group of double cutting knives, and the downward pushing and discharging mechanism is linked with the inner cutting knife, and moves downward after moving upward with the inner cutting knife, playing a role of downward pushing and discharging.

[0038] Such as Figure 6 , the downward pushing and discharging mechanism includes a V-shaped elastic member 6 (riveted) fixed on the inner cutting knife. In this embodiment, it is a metal elastic sheet, and its end side extends to fit the inner side of the outer cutting knife and is limited in the upward direction. A connecting rod 8 arranged downward is also fixed on the limited end side of the elastic member 6 for connecting the downward push rod 9.

[0039] Specifically, a limiting block 7 is correspondingly arranged on the inner side of the outer cutting knife for restricting the movement of the end side of the elastic member 6; and a limiting groove 71 is opened at the bottom of the limiting block 7 for restricting the upward movement of the end of the elastic member 6 together.

[0040] In addition, an activity gap 41 is formed in the middle of the assembly hole 4 on the inner cutting knife, and the width of the activity gap matches the outer diameter of the connecting shaft of the tool holder. A cutting knife activity gap 12 is arranged at the top of the cutting knife groove 11 in the tool holder 1.

[0041] During operation, the inner cutting knife will slightly protrude from the outer cutting knife due to gravity. When the cutting knife is pressed down, the inner cutting knife will gradually slide upward. The elastic member 6 is limited by the limiting block 7 and will move downward, thereby driving the downward push rod 9 to press down, discharging the cutting waste in the middle after cutting. After the cutting knife is lifted, the elastic member naturally restores its deformation.

[0042] In this application, the structures and connection relationships not described in detail are all prior arts, and their structures and principles are well-known technologies, which will not be elaborated here.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, shall be covered by the protection scope of the present invention.

Claims

1. A printing cutter assembly, comprising a tool holder, wherein a plurality of groups of double cutters arranged in parallel and spaced apart are assembled at the tool holder corresponding to the part to be cut, adjacent double cutters are abutted and cooperated with each other, and are detachably arranged, and is characterized in that: The inner cutting knife protrudes beyond the outer cutting knife and can slide in the cutting direction to be flush with the cutting edge of the outer cutting knife. When contacting the printing material to be cut, it can slide upward and perform normal cutting. A downward pushing and discharging mechanism is installed in the gap inside the double cutting knives of the same group. The downward pushing and discharging mechanism includes a V-shaped elastic member fixed to the inner cutting knife, and its end extends to fit against the inner side of the outer cutting knife and is limited in the upward direction. A connecting rod arranged downward is fixed to the end side limited by the elastic member for connecting the downward push rod. A matching cutting knife groove is formed on the inner side of the tool holder corresponding to the inner cutting knife. An activity gap is formed in the middle of the assembly hole on the inner cutting knife, and the width of the activity gap matches the outer diameter of the connecting shaft of the tool holder. A cutting knife activity gap is provided at the top of the cutting knife groove in the tool holder. The downward pushing and discharging mechanism is linked with the inner cutting knife and moves downward during the upward sliding process of the inner cutting knife, playing a role in downward pushing and discharging.

2. The printing cutter assembly according to claim 1, wherein: The tool holders are in four groups and enclose a rectangular shape.

3. The printing cutter assembly according to claim 1, wherein: A cutting knife one and a cutting knife two are respectively assembled in adjacent tool holders. An assembly groove is formed on the end side of the cutting knife one, and a partition block is formed in the middle of the assembly groove to form an assembly space for the adjacent cutting knife two. Correspondingly, a lapping portion is formed on the end side of the cutting knife two for lapping and abutting in the assembly space.

4. The printing cutter assembly according to any one of claims 1-3, characterized in that: The cutting edges of the double cutting knives are formed into serrated shapes.

5. The printing cutter assembly according to claim 4, wherein: A limiting block is correspondingly installed on the inner side of the outer cutting knife for restricting the movement of the end side of the elastic member.

6. The printing cutter assembly according to claim 5, wherein: A limiting groove is opened at the bottom of the limiting block for restricting the upward movement of the end of the elastic member together.

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