Die cutting roller

Abstract

The present invention provides a die-cutting roller, which comprises a core shaft, a roller body and a cutter; the roller body is sleeved on the core shaft, and the cutter is connected to the roller body; the core shaft is a tubular structure, the interior of the core shaft is filled with a first filling structure, the roller body is a tubular structure, and the interior of the roller body and the space between the core shaft are filled with a second filling structure. The application of this technical solution can provide a lightweight die-cutting roller.

Description

Technical Field

[0001] The invention relates to a die-cutting roller. Background Art

[0002] As for the processing and cutting of existing strip finished material strips, die-cutting machines are often used. Die-cutting machines are also called beer machines, cutting machines, and CNC punching machines. They are mainly used for die-cutting (full cutting, half cutting), embossing and hot stamping operations, laminating, and automatic waste discharge of corresponding non-metallic materials, self-adhesive stickers, EVA, double-sided adhesives, electronics, mobile phone pads, etc. The die-cutting machine uses steel knives, hardware molds, steel wires (or templates carved from steel plates), and applies a certain pressure through the stamping plate to roll and cut the printed products or cardboard into a certain shape. The die-cutting roller used in the existing die-cutting machine includes a roller body and a cutter located on the roller body. The die-cutting roller is generally made of steel in one piece. The two ends of the die-cutting roller are respectively connected to the driving device. When the die-cutting roller rotates, it drives the cutter to die-cut the workpiece. The material cost of the die-cutting roller is high, and it needs to be manufactured by removing materials or sintering processing. In addition, the overall weight of the die-cutting roller is high, and the driving force required by the driving device is high, which has high requirements for the overall die-cutting machine.

[0003] For example, Chinese invention patent CN105563043B discloses a method for processing a die-cutting roller, and the processing steps include: processing the roller body: sintering and grinding a tool with a horizontal cutting edge with a cemented carbide material; fixing a bar of No. 20 steel or No. 45 steel on a CNC machining center, first turning the outer circle and shoulder of the roller body on the bar, and then replacing the tool to turn the groove of the roller body; making an insert: completely embedding the groove of the roller body with soft silicone, taking it out after compaction, and marking a reference line to obtain a silicone mold, and sintering a cemented carbide insert blank according to the silicone mold; processing a cutting knife barrel: sintering a cutting knife barrel blank and a cutting portion thereon with cemented carbide powder at one time, and then sintering them together with the insert blank to form a cutting knife barrel, with the reference line of each insert blank as the reference; grinding and repairing the cutting knife portion; assembling: inserting the cutting knife barrel into the roller body and rotating it slightly so that the insert of the cutting knife barrel is completely embedded in the roller body. The die-cutting roller is processed by metal sintering to form a roller body and a cutting knife cylinder respectively, so the material cost is high and the weight is still relatively high. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a lightweight die-cutting roller.

[0005] In order to solve the above technical problems, the present invention provides a die-cutting roller, comprising:

[0006] Mandrel;

[0007] Roller body;

[0008] Knives;

[0009] The roller body is sleeved on the mandrel, and the cutter is connected to the roller body;

[0010] The mandrel is a tubular structure, the interior of the mandrel is filled with a first filling structure, the roller body is a tubular structure, the interior of the roller body and the space between the mandrel are filled with a second filling structure;

[0011] The first filling structure comprises a plurality of first transverse plates and a plurality of second transverse plates extending along the axial direction of the core shaft, the first transverse plates and the second transverse plates are respectively connected to the inner wall of the core shaft at two sides, and the plurality of first transverse plates and the plurality of second transverse plates are vertically staggered and connected;

[0012] The second filling structure includes a plurality of radial plates, a plurality of circumferential ring plates and a plurality of filling sub-grids extending along the axial direction of the roller body; the radial plates extend along the radial direction of the roller body to be connected between the roller body and the core shaft; the plurality of circumferential ring plates extend along the circumference of the roller body to be connected to the plurality of radial plates, and the radial sizes of the plurality of circumferential ring plates are different; the filling sub-grid is connected at the connection between the circumferential ring plate and the radial plate, the cross-section of the filling sub-grid is a four-pointed star, and the circumferential ring plate and the radial plate are respectively connected to the recesses of the filling sub-grid.

[0013] In a more preferred embodiment, a plurality of first transverse plates are evenly arranged in parallel and spaced apart, and a plurality of second transverse plates are evenly arranged in parallel and spaced apart.

[0014] In a more preferred embodiment, the radial plates are evenly spaced along the circumference of the roller body, and the spacing distance between two adjacent circumferential ring plates is the same.

[0015] In a more preferred embodiment, the filling sub-grid is a hollow structure.

[0016] In a more preferred embodiment, the mandrel is made of a seamless steel pipe, and the roller body is made of a seamless steel pipe.

[0017] In a more preferred embodiment, the tool comprises a first half shell and a second half shell, the first half shell and the second half shell are butt-jointed and sleeved outside the roller body, and the tool further comprises a die-cutting knife extending on the first half shell and the second half shell.

[0018] In a more preferred embodiment, the first half shell and the second half shell are detachably connected to the roller body by means of pin positioning and bolt locking.

[0019] In a more preferred embodiment, it also includes two limiting ring sleeves respectively arranged at both ends of the roller body, the limiting ring sleeve includes a first limiting circumferential wall corresponding to the outer circumferential wall of the first half shell or the second half shell, and the limiting ring sleeve also includes a second limiting circumferential wall corresponding to the top end of the die cutting knife.

[0020] In a more preferred embodiment, it further includes two bearing sleeves respectively arranged at two ends of the core shaft.

[0021] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0022] 1. The die-cutting roller comprises a core shaft, a roller body and a cutter; the roller body is sleeved on the core shaft, and the cutter is connected to the roller body; the core shaft is a tubular structure, the interior of the core shaft is filled with a first filling structure, the roller body is a tubular structure, and the interior of the roller body and the core shaft are filled with a second filling structure; the first filling structure comprises a plurality of first transverse plates and a plurality of second transverse plates extending along the axial direction of the core shaft, the first transverse plates and the second transverse plates are respectively connected to the inner wall of the core shaft on both sides, and the plurality of first transverse plates and the plurality of second transverse plates are perpendicular to each other The second filling structure comprises a plurality of radial plates, a plurality of circumferential ring plates and a plurality of filling sub-grids extending in the axial direction of the roller body; the radial plates extend in the radial direction of the roller body to be connected between the roller body and the core shaft; the plurality of circumferential ring plates extend in the circumferential direction of the roller body to be connected to the plurality of radial plates, and the radial sizes of the plurality of circumferential ring plates are different; the filling sub-grids are connected at the connection between the circumferential ring plates and the radial plates, the cross section of the filling sub-grids is in the shape of a four-pointed star, and the circumferential ring plates and the radial plates are respectively connected to the recesses of the filling sub-grids;

[0023] The arrangement of the first filling structure and the second filling structure can reduce the weight of the entire die-cutting roller, thereby improving the level of lightweight. The arrangement of the first filling structure can not only reduce the weight of the mandrel, but also improve the overall rigidity of the mandrel, and also enable the mandrel to have good bending resistance. The arrangement of the second filling structure can not only reduce the weight of the roller body, but also improve the elasticity of the roller body to prevent breakage.

[0024] 2. A plurality of first transverse plates are evenly arranged in parallel and at intervals, and a plurality of second transverse plates are evenly arranged in parallel and at intervals; the radial plates are evenly arranged in the circumferential direction of the roller body, and the spacing distance between two adjacent circumferential ring plates is the same; the filling sub-grid is a hollow structure;

[0025] The rigidity uniformity of the mandrel is high, and there will be no reduction in strength at individual locations;

[0026] The rigidity of the roller body is highly uniform, and there will be no reduction in strength at individual locations, and there will be no problem of insufficient support on the surface of the roller body;

[0027] The cross section of the filling sub-grid is in the shape of a four-pointed star and has a hollow structure, which can further reduce the weight of the roller body. In addition, the roller body can have an elastic deformation margin when receiving radial force, so that the operation is smoother and less prone to damage.

[0028] 3. The mandrel is made of a seamless steel pipe, and the roller body is made of a seamless steel pipe; the structure has high strength and is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional schematic diagram of a die-cutting roller in a preferred embodiment of the present invention;

[0030] Figure 2 It is a partial longitudinal cross-sectional schematic diagram of the die-cutting roller in a preferred embodiment of the present invention;

[0031] Figure 3 A three-dimensional schematic diagram of a tool in a preferred embodiment of the present invention;

[0032] Figure 4 A schematic cross-sectional view of a die-cutting roller in a preferred embodiment of the present invention, showing a first filling structure and a second filling structure;

[0033] Figure 5 A schematic cross-sectional view of a mandrel in a preferred embodiment of the present invention;

[0034] Figure 6 is a cross-sectional schematic diagram of a second filling structure in a preferred embodiment of the present invention; DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Certain directional terms used to describe the drawings below, such as "inside", "outside", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0037] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0038] See also Figure 1-Figure 6A die-cutting roller 100, the die-cutting roller 100 includes a core shaft 1, a roller body 2 and a cutter 3. The roller body 2 and the core shaft 1 are both tubular structures. In this embodiment, the roller body 2 and the core shaft 1 are both made of seamless steel pipes, which have better performance and more stable operation. The diameter of the roller body 2 is larger than the core shaft 1, and the core shaft 1 is inserted into the interior of the roller body 2 so that the roller body 2 is sleeved on the core shaft 1. The cutter 3 is connected to the roller body 2, and both ends of the core shaft 1 are driven to rotate to drive the roller body 2 to rotate. The cutter 3 rotates with the roller body 2 to die-cut the workpiece (for example, non-metallic materials, self-adhesive, EVA, double-sided tape, electronics, mobile phone pads, etc.).

[0039] See also Figure 4-6 , the interior of the mandrel 1 is filled with a first filling structure 4, and the interior of the roller body 2 and the space between the mandrel 1 are filled with a second filling structure 5. The first filling structure 4 includes a plurality of first transverse plates 41 and a second transverse plate 42 extending along the axial direction of the mandrel 1, and the two sides of the first transverse plates 41 and the second transverse plates 42 are respectively connected to the inner wall of the mandrel 1, and the plurality of first transverse plates 41 and the plurality of second transverse plates 42 are vertically staggered and connected. The first transverse plates 41 and the second transverse plates 42 can be made in one piece. For example, when the first filling structure 4 is made of metal material (such as iron), the first transverse plates 41 and the second transverse plates 42 can be cast in one piece, and the connection between the first transverse plates 41 and the second transverse plates 42 and the mandrel 1 is achieved by welding; the first transverse plates 41 and the second transverse plates 42 can also be connected by splicing, which will not be repeated here.

[0040] The second filling structure 5 includes a plurality of radial plates 51, a plurality of circumferential ring plates 52 and a plurality of filling sub-grids 53 extending in the axial direction of the roller body 2; the radial plates 51 extend in the radial direction of the roller body 2 to be connected between the roller body 2 and the mandrel 1; the plurality of circumferential ring plates 52 extend in the circumferential direction of the roller body 2 to be connected to the plurality of radial plates 51, and the radial sizes of the plurality of circumferential ring plates 52 are different; the filling sub-grid 53 is connected at the connection between the circumferential ring plate 52 and the radial plate 51, and the cross section of the filling sub-grid 53 is a four-pointed star shape, and the circumferential ring plate 52 and the radial plate 51 are respectively connected to the concave part of the filling sub-grid 53. The radial plates 51, the circumferential ring plates 52 and the filling sub-grid 53 can be made in one piece, for example, when the second filling structure 5 is made of metal material (for example, iron), the radial plates 51, the circumferential ring plates 52 and the filling sub-grid 53 can be cast in one piece, and the radial plate 51 is connected between the mandrel 1 and the roller body 2 by welding. It should be noted that the radial plate 51 and the circumferential ring plate 52 can be understood as a structure connected by multiple sections of plate bodies. For example, a single radial plate 51 includes multiple sections of radial sub-plates 511 respectively connected to multiple filling sub-grids 53, and a single circumferential ring plate 52 includes multiple sections of circumferential sub-plates 521 respectively connected to multiple filling sub-grids 53.

[0041] The arrangement of the first filling structure 4 and the second filling structure 5 can reduce the weight of the entire die-cutting roller 100, thereby improving the level of lightweight. The arrangement of the first filling structure 4 can not only reduce the weight of the mandrel 1, but also improve the overall rigidity of the mandrel 1, and also enable the mandrel 1 to have good bending resistance. The arrangement of the second filling structure 5 can not only reduce the weight of the roller body 2, but also improve the elasticity of the roller body 2 to prevent breakage.

[0042] In this embodiment, the first transverse plates 41 are evenly spaced and arranged in parallel, and the second transverse plates 42 are evenly spaced and arranged in parallel in the mandrel 1. The mandrel 1 has high rigidity uniformity and will not have reduced strength at individual locations.

[0043] In this embodiment, the radial plates 51 are evenly spaced along the circumference of the roller body 2, and the spacing distance between two adjacent circumferential ring plates 52 is the same. Specifically, the central angle between two adjacent radial plates 51 is the same, and the distance between two adjacent circumferential ring plates 52 along the radial direction of the roller body 2 is the same. The roller body 2 rotates during operation and drives the cutter 3 to perform die cutting, so the arrangement positions of the radial plates 51 and the circumferential ring plates 52 can make the rigidity of the roller body 2 highly uniform, and there will be no reduction in strength at individual positions, and there will be no problem of insufficient support on the surface of the roller body 2.

[0044] In this embodiment, the filling sub-grid 53 is a hollow structure. The cross section of the filling sub-grid 53 is a four-pointed star shape and the hollow structure can further reduce the weight of the roller body 2, and can also allow the roller body 2 to have an elastic deformation margin when receiving radial force, so that the operation is smoother and less prone to damage.

[0045] See also Figure 1 Combination Figure 3 The tool 3 includes a first half shell 31 and a second half shell 32, which are butted against each other and sleeved outside the roller body 2. The tool 3 also includes a die-cutting knife 35 extending from the first half shell 31 and the second half shell 32. The first half shell 31 and the second half shell 32 are semi-cylindrical shells, respectively. The first half shell 31 and the second half shell 32 are oppositely connected to each other. The side includes a protrusion 33 and a groove 34 respectively, which are butted against each other. The protrusion 33 and the groove 34 play a role in positioning. The die-cutting knife 35 is extended and arranged on the outer peripheral wall of the first half shell 31 and the second half shell 32. When the die-cutting roller 100 rotates, the die-cutting knife 35 of the tool 3 is driven to die-cut the corresponding workpiece.

[0046] In this embodiment, the first half shell 31 and the second half shell 32 are detachably connected to the roller body 2 by means of pin positioning and bolt locking. Specifically, the roller body 2 includes a first pin hole 22 and a first bolt hole, and the first half shell 31 and the second half shell 32 respectively include a pin 36 and a second screw hole 37 corresponding to the first pin hole 22 and the first screw hole 21, the pin 36 penetrates the first pin hole 22 to position and connect the first half shell 31 and the second half shell 32 to the roller body 2, and the bolt passes through the first screw hole 21 and the second screw hole 37 respectively to fix the first half shell 31 and the second half shell 32 to the roller body 2. When the cutter 3 needs to be removed, a tool, such as a screwdriver, is used to remove the bolt and the pin, and the first half shell 31 and the second half shell 32 can be removed from the roller body 2. When the cutter 3 needs to be replaced, the downtime of the die-cutting machine can be greatly reduced, so that the die-cutting machine can operate efficiently, which plays an important role in improving production efficiency.

[0047] See also Figure 1 Combination Figure 2The die-cutting roller 100 further includes two limiting rings 6 respectively arranged at both ends of the roller body 2, the limiting rings 6 include a first limiting peripheral wall 61 corresponding to and flush with the outer peripheral wall of the first half shell 31 or the second half shell 32, and the limiting rings 6 also include a second limiting peripheral wall 62 corresponding to and flush with the top of the die-cutting knife 35. The limiting rings 6 can limit the cutting amount of the tool 3 to prevent excessive cutting from damaging the tool 3. Specifically, the first limiting peripheral wall 61 can limit the workpiece from directly abutting against the outer peripheral wall of the first half shell 31 and the second half shell 32, and the height difference between the first limiting peripheral wall 61 and the second limiting peripheral wall 62 can define the cutting depth of the tool 3.

[0048] See also Figure 1 Combination Figure 2 The die-cutting roller 100 further includes two bearing sleeves 7 respectively arranged at the two ends of the core shaft 1. In this embodiment, the two ends of the core shaft 1 extend out of the roller body 2 to define the ends for connecting the bearing sleeves 7, and the bearing sleeves 7 are sleeved on the two ends of the core shaft 1. The two end openings of the roller body 2 are respectively connected to the first baffle 8, and the first baffle 8 is connected between the roller body 2 and the core shaft 1. One end of the bearing sleeve 7 abuts against the first baffle 8. The two end openings of the core shaft 1 are respectively connected to the second baffle 9.

[0049] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A die-cutting roller, characterized in that: include: Mandrel; Roller body; Knives; The roller body is sleeved on the mandrel, and the cutter is connected to the roller body; The mandrel is a tubular structure, the interior of the mandrel is filled with a first filling structure, the roller body is a tubular structure, the interior of the roller body and the space between the mandrel are filled with a second filling structure; The first filling structure comprises a plurality of first transverse plates and a plurality of second transverse plates extending along the axial direction of the core shaft, the first transverse plates and the second transverse plates are respectively connected to the inner wall of the core shaft at two sides, and the plurality of first transverse plates and the plurality of second transverse plates are vertically staggered and connected; The second filling structure comprises a plurality of radial plates, a plurality of circumferential ring plates and a plurality of filling sub-grids extending in the axial direction of the roller body; the radial plates extend in the radial direction of the roller body to be connected between the roller body and the core shaft; the plurality of circumferential ring plates extend in the circumferential direction of the roller body to be connected to the plurality of radial plates, and the radial sizes of the plurality of circumferential ring plates are different; the filling sub-grids are connected at the connection between the circumferential ring plates and the radial plates, the cross section of the filling sub-grids is in the shape of a four-pointed star, and the circumferential ring plates and the radial plates are respectively connected to the recesses of the filling sub-grids; A plurality of first transverse plates are evenly arranged in parallel and spaced apart, and a plurality of second transverse plates are evenly arranged in parallel and spaced apart; The radial plates are evenly spaced along the circumference of the roller body, and the spacing distance between two adjacent circumferential ring plates is the same.

2. The die-cutting roller according to claim 1, characterized in that: The filling sub-cell is a hollow structure.

3. The die-cutting roller according to claim 1, characterized in that: The mandrel is made of a seamless steel pipe, and the roller body is made of a seamless steel pipe.

4. The die-cutting roller according to claim 1, characterized in that: The tool comprises a first half shell and a second half shell, the first half shell and the second half shell are butted against each other and sleeved outside the roller body, and the tool further comprises a die cutting knife extending and arranged on the first half shell and the second half shell.

5. The die-cutting roller according to claim 4, characterized in that: The first half shell and the second half shell are detachably connected to the roller body by means of pin positioning and bolt locking.

6. The die-cutting roller according to claim 4, characterized in that: It also includes two limiting ring sleeves respectively arranged at both ends of the roller body, the limiting ring sleeve includes a first limiting peripheral wall corresponding to the outer peripheral wall of the first half shell or the second half shell, and the limiting ring sleeve also includes a second limiting peripheral wall corresponding to the top of the die cutting knife.

7. The die-cutting roller according to claim 1, characterized in that: It also includes two bearing sleeves respectively arranged at two ends of the core shaft.

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