A sandwich-type cutting die with adjustable spacing

Abstract

The present invention relates to the field of knife dies, and discloses a sandwich-type knife die with adjustable spacing, comprising a first metal layer, a second metal layer and a plurality of third metal layers, wherein a knife die mechanism is plugged into the third metal layer, the first metal layer is used to place the second metal layer and the third metal layer, a plurality of grooves are provided on the first metal layer, the second metal layer is fixedly connected in the grooves, a plurality of third metal layers are adjustably fixed on the second metal layer, and the third metal layer and the second metal layer are provided with adjustment gaps in the first direction and the second direction. By setting the position adjustment of the third metal layer on the second metal layer along the first direction and the second direction, the third metal layer can move with the color position movement after the paper expands, thereby solving the problem of color position movement caused by the expansion and deformation of the paper absorbing ink, and difficulty in registration during die cutting, and greatly improving the die cutting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of knife dies, in particular to a sandwich-type knife die with adjustable spacing. Background Art

[0002] As we all know, during the printing process of packaging boxes, paper has the characteristic of expanding and deforming after absorbing ink. In addition, some printed products require gravure printing, offset printing, or even flexographic printing due to design or anti-counterfeiting requirements, which makes the paper absorb ink repeatedly and the expansion coefficient is even more difficult to control. For some high-end packaging boxes, the products are required to be symmetrical in color position after die-cutting and packaging. The industry calls it "dead color position", but the position of the die is generally set according to the printing layout position of the product at a ratio of 1:1. If there is an unpredictable paper deformation problem during the printing process, the color position cannot be registered during die-cutting. Summary of the invention

[0003] The purpose of the present invention is to provide a sandwich-type cutting die with adjustable spacing, aiming to solve the problem in the prior art that paper deformation leads to poor registration during die-cutting.

[0004] The present invention is implemented as follows: a sandwich-type cutting die with adjustable spacing includes a first metal layer, a second metal layer and multiple third metal layers, the cutting die mechanism is plugged into the third metal layer, the first metal layer is used to place the second metal layer and the third metal layer, the first metal layer is provided with multiple grooves, the second metal layer is fixedly connected in the grooves, the multiple third metal layers are adjustably fixed on the second metal layer, and the third metal layer and the second metal layer are provided with adjustable gaps in the first direction and the second direction.

[0005] Preferably, a plurality of adjustment holes are formed on the third metal layer, and the adjustment holes are used to drive the third metal layer to move along the first direction and the second direction on the second metal layer.

[0006] Preferably, a plurality of first through holes are provided on the third metal layer, and the first through holes are located at two ends of the third metal layer in the first direction.

[0007] Preferably, the second metal layer is provided with a plurality of second through holes, the first metal layer is provided with a plurality of first mounting holes, and the central axes of the second through holes, the first through holes and the first mounting holes coincide with each other.

[0008] Preferably, a plurality of second mounting holes are formed on the third metal layer, a plurality of third mounting holes are formed on the second metal layer, and the second mounting holes and the third mounting holes are connected by fasteners.

[0009] Preferably, a first avoidance hole is opened on the first metal layer, the central axis of the first avoidance hole coincides with the central axes of the second mounting hole and the third mounting hole, and the fastener is embedded in the first avoidance hole.

[0010] Preferably, the first metal layer is provided with a plurality of first connecting holes, the second metal layer is provided with a plurality of second connecting holes, the first connecting holes and the second connecting holes are connected by connecting pieces, the third metal layer is provided with a second avoidance hole, the central axis of the second avoidance hole coincides with the central axis of the first connecting hole and the second connecting hole, and the connecting piece is embedded in the second avoidance hole.

[0011] Preferably, the third metal layer is provided with a plurality of first pairs of mold holes, the second metal layer is provided with a plurality of second pairs of mold holes, the first metal layer is provided with a plurality of third pairs of mold holes, and the central axes of the first pair of mold holes, the second pair of mold holes and the third pair of mold holes coincide.

[0012] Preferably, a plurality of fixing holes are formed on the first metal layer, and the fixing holes are connected to the second fixing holes on the second metal layer, and the fixing holes are used to fasten the first metal layer and the second metal layer.

[0013] Compared with the prior art, the present invention includes a first metal layer, a second metal layer and a plurality of third metal layers, the die cutter mechanism is plugged into the third metal layer, the first metal layer is used to place the second metal layer and the third metal layer, the first metal layer is provided with a plurality of grooves, the second metal layer is fixedly connected in the grooves, the plurality of third metal layers are adjustably fixed on the second metal layer, and the third metal layer and the second metal layer are provided with adjustment gaps in the first direction and the second direction. By setting the position adjustment of the third metal layer on the second metal layer along the first direction and the second direction, the third metal layer can move with the color position movement after the paper expands, thereby solving the problem of color position movement caused by the expansion and deformation of the paper absorbing ink, and difficulty in registration during die cutting, and greatly improving the die cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a sandwich-type cutting die with adjustable spacing provided by an embodiment of the present invention;

[0015] Figure 2 1 is a schematic diagram of an exploded view of a sandwich-type cutting die with adjustable spacing provided by an embodiment of the present invention;

[0016] Figure 3 It is a schematic diagram of the third metal layer structure of the sandwich-type cutting die with adjustable spacing provided in an embodiment of the present invention;

[0017] Figure 4 It is a schematic diagram of the second metal layer structure of a sandwich-type cutting die with adjustable spacing provided in an embodiment of the present invention;

[0018] Figure 5 It is a schematic diagram of the first metal layer structure of a sandwich-type cutting die with adjustable spacing provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] Reference Figure 1 , Figure 2 As shown, a sandwich-type knife die with adjustable spacing includes a first metal layer 1, a second metal layer 2 and a third metal layer 3, a knife die mechanism 4 is plugged into the third metal layer 3, the first metal layer 1 is used to place the second metal layer 2 and the third metal layer 3, a plurality of grooves 11 are provided on the first metal layer 1, the second metal layer 2 is fixedly connected in the grooves 11, the third metal layer 3 is adjustably fixed on the second metal layer 2, and the third metal layer 3 and the second metal layer 2 are provided with adjustable gaps in the first direction and the second direction. In this way, the position of the knife die mechanism 4 can be adjusted by adjusting the position of the third metal layer 3 on the second metal layer 2. By adjusting the position of the third metal layer 3 in the first direction and the second direction, the knife die mechanism 4 can move with the color position movement after the paper expands, thereby solving the problem of color position movement caused by the expansion and deformation of the paper due to ink absorption, and difficulty in registration during die cutting, and greatly improving the die cutting efficiency.

[0023] Furthermore, a plurality of adjustment holes 33 are provided on the third metal layer 3, and the adjustment holes 33 are used to drive the third metal layer 3 to move along the first direction and the second direction on the second metal layer 2. In one embodiment, the operator can directly manually operate the adjustment holes 33 to move the third metal layer 3. In another embodiment, the operator can use an adjustment device (not shown in the figure) to move the position of the third metal layer 3. The adjustment device is fixedly installed on the third metal layer through the adjustment holes 33, so that the adjustment device can drive the third metal layer 3 to move in the first direction and the second direction, wherein the adjustment device is preferably a fine-tuning displacement slide.

[0024] In another embodiment, the third metal layer 3 is provided with a first through hole 31, and there are a plurality of first through holes 31. The first through holes 31 are located at both ends of the third metal layer 3 in the first direction. The fixed pillars (not shown in the figure) are in contact with the first metal layer 1 through the first through holes 31, and the fixed pillars are fixedly connected to the adjustment device. This arrangement allows the adjustment device to be detachably mounted on the first metal layer 1, and can be installed and disassembled at any time, which is convenient for operation. The radius of the first through hole 31 is greater than the radius of the fixed pillar, and the difference in radius between the two is not less than the distance between the third metal layer 3 and the inner wall of the groove 11 in the first direction and the second direction, so that the third metal layer 3 can move in the first direction and the second direction under the action of the adjustment device.

[0025] Furthermore, a plurality of second through holes 21 are provided on the second metal layer 2, and a plurality of first mounting holes 13 are provided on the first metal layer 1. The central axes of the second through holes 21, the first through holes 31 and the first mounting holes 13 coincide with each other. The fixing pillars pass through the first through holes 31 and the second through holes 21 and abut against the first mounting holes 13, thereby connecting the second metal layer 2, the third metal layer 3 and the first metal layer 1.

[0026] Furthermore, for the convenience of assembly, a plurality of second mounting holes 36 are provided on the third metal layer 3, and a plurality of third mounting holes 24 are correspondingly provided on the second metal layer 2. The second mounting holes 36 and the third mounting holes 24 are connected by fasteners, and the third metal layer 3 is detachably connected to the second metal layer 2. A first avoidance hole 16 is provided on the first metal layer 1, and the central axis of the first avoidance hole 16 coincides with the central axis of the second mounting hole 36 and the third mounting hole 24. The fastener is embedded in the first avoidance hole 16, so that the second metal layer 2 and the third metal layer 3 can be placed flatly in the groove 11.

[0027] Furthermore, in order to facilitate assembly, the first metal layer 1 is provided with a plurality of first connection holes 15, and correspondingly, the second metal layer 2 is provided with a plurality of second connection holes 22. The first connection holes 15 and the second connection holes 22 are connected by a connecting piece, and the first metal layer 1 and the second metal layer 2 are detachably connected. The connecting piece is preferably a bolt. The third metal layer 3 is provided with a second avoidance hole 32, and the central axis of the second avoidance hole 32 coincides with the central axis of the first connection hole 15 and the second connection hole 22. The connecting piece is embedded in the second avoidance hole 32, so that the surface of the third metal layer 3 is flat.

[0028] In other embodiments, the first metal layer 1 is composed of multiple plates connected in series by connecting columns 12; a plurality of first pairs of mold holes 35 are provided on the third metal layer 3, and correspondingly, a plurality of second pairs of mold holes 23 are provided on the second metal layer 2; a plurality of third pairs of mold holes 14 are provided on the first metal layer 1, and the first pair of mold holes 3, the second pair of mold holes 23, and the third pair of mold holes 14 are used for mold alignment during the assembly process.

[0029] In other embodiments, a plurality of fixing holes 12 are formed on the first metal layer 1 , and the fixing holes 12 are connected to the second fixing holes 25 on the second metal layer 2 for fastening the first metal layer 1 and the second metal layer 2 .

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sandwich-type cutting die with adjustable spacing, characterized in that: The invention comprises a first metal layer, a second metal layer and a plurality of third metal layers, wherein the die cutting mechanism is plugged into the third metal layer, the first metal layer is used to place the second metal layer and the third metal layer, the first metal layer is provided with a plurality of grooves, the second metal layer is fixedly connected in the grooves, the plurality of third metal layers are adjustably fixed on the second metal layer, and the third metal layer and the second metal layer are both provided with an adjustable gap in the first direction and the second direction; The third metal layer is provided with a plurality of first pairs of die holes, the second metal layer is provided with a plurality of second pairs of die holes, the first metal layer is provided with a plurality of third pairs of die holes, and the central axes of the first pair of die holes, the second pair of die holes, and the third pair of die holes coincide with each other; The first metal layer is provided with a plurality of fixing holes, the fixing holes are connected to the second fixing holes on the second metal layer, and the fixing holes are used to fasten the first metal layer and the second metal layer.

2. The sandwich-type cutting die with adjustable spacing as claimed in claim 1, characterized in that: The third metal layer is provided with a plurality of adjustment holes, and the adjustment holes are used to drive the third metal layer to move along the first direction and the second direction on the second metal layer.

3. The sandwich-type cutting die with adjustable spacing as claimed in claim 2, characterized in that: A plurality of first through holes are disposed on the third metal layer, and the first through holes are located at two ends of the third metal layer in a first direction.

4. The sandwich-type cutting die with adjustable spacing as claimed in claim 3, characterized in that: The second metal layer is provided with a plurality of second through holes, the first metal layer is provided with a plurality of first mounting holes, and the central axes of the second through holes, the first through holes and the first mounting holes coincide with each other.

5. The sandwich-type cutting die with adjustable spacing as claimed in claim 4, characterized in that: The third metal layer is also provided with a plurality of second mounting holes, the second metal layer is provided with a plurality of third mounting holes, and the second mounting holes and the third mounting holes are connected by fasteners.

6. The sandwich-type cutting die with adjustable spacing as claimed in claim 5, characterized in that: A first avoidance hole is formed on the first metal layer, a central axis of the first avoidance hole coincides with central axes of the second mounting hole and the third mounting hole, and the fastener is embedded in the first avoidance hole.

7. The sandwich-type cutting die with adjustable spacing as claimed in claim 6, characterized in that: The first metal layer is also provided with a plurality of first connecting holes, the second metal layer is provided with a plurality of second connecting holes, the first connecting holes and the second connecting holes are connected by connecting pieces, the third metal layer is provided with a second avoidance hole, the central axis of the second avoidance hole coincides with the central axis of the first connecting hole and the second connecting hole, and the connecting piece is embedded in the second avoidance hole.

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