CN116001024A

CN116001024A - Precise adjustable slitting knife and die cutting device

Info

Publication number: CN116001024A
Application number: CN202111228532.7A
Authority: CN
Inventors: 刘晓鹏; 蒋建国; 周姿
Original assignee: Hopines Electronic Technology Shanghai Co Ltd
Current assignee: Hopines Electronic Technology Shanghai Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-04-25

Abstract

The invention relates to a precise adjustable slitting knife and a die cutting device, wherein the slitting knife comprises a main shaft (14), at least two roll shafts (10), at least two roll pillows (11) and at least two blades (2); the main shaft (14) is fixedly arranged between the two roller pillows (11), the roller shaft (10) is fixedly arranged at the outer side of the roller pillow (11), and the blade (2) is arranged on the main shaft (14) in a penetrating way; the spindle (14) is provided with external threads, and the inner side of the blade (2) is provided with internal threads matched with the external threads. The die cutting device comprises the precise adjustable slitting knife, a circular knife bracket (7) and a smooth roll (4). Compared with the prior art, the invention has the advantages of easy fine adjustment of the position, improved product quality, reduced debugging time and the like.

Description

Precise adjustable slitting knife and die cutting device

Technical Field

The invention relates to the field of die cutting piece processing, in particular to a precise adjustable slitting knife and a die cutting device.

Background

The blade of the slitting machine is the most important ring in the slitting tool apron, and the processing precision is more highly required. For the plane, an ultra-precise plane grinding machine tool is adopted, a special grinding method is adopted for grinding, and the flatness is within 0.003mm (max) after strict quality control. The slitting machine blade is mainly used for slitting metal, films, paper, cigarettes, leather, printing and the like.

The cutting blade of the slitting machine is mainly used for a slitting production line of metal plates, strips, leather and packaging machinery, and is manufactured by adopting materials such as 9CrSi, SKD, SKH, T10,6CrW2Si, cr12MoV, LD, H13, W18Cr4V and the like of high-speed cutting tool steel with stable materials through a set of perfect vacuum heat treatment process, and has uniform hardness and precise processing. The blade is required to have smooth and flat incision, and the cutting edge is easy to wear. The device is mainly used for slitting and slitting plates and various slitting machine sets.

The conventional die-cutting slitting knife is mainly used for die-cutting film plastics into specified width dimensions, as shown in fig. 1, a blade can freely slide at a shaft body position, and the blade is fixed by bolts after being adjusted to a required width. However, when the blade is laterally adjusted, fine adjustment of the blade position requires a rubber hammer, tapping adjustment, and is not easily adjusted to an accurate position, which is time consuming.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the precise adjustable slitting knife and the die cutting device which have the advantages of easy fine adjustment position, improved product quality and reduced debugging time.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a precision adjustable divides strip sword, this divides strip sword includes main shaft, two at least roller pillows and two at least blades;

the main shaft is fixedly arranged between the two roller pillows, the roller shaft is fixedly arranged at the outer side of the roller pillow, and the blade is arranged on the main shaft in a penetrating way;

the spindle is provided with external threads, and the inner side of the blade is provided with internal threads matched with the external threads.

Further, a positioning screw hole is formed in the blade; during positioning, the screw is inserted into the screw hole and simultaneously abuts against the blade and the main shaft.

Such screw-screw hole positioning is very conventional and is not quite different from the prior art.

Further, a groove is formed in the main shaft; when in positioning, the screw is inserted and abutted in the groove.

Further, a roller body for increasing the strength is arranged on the roller pillow.

Further, the main shaft and the roll shaft are coaxially arranged.

The die cutting device comprises the precise adjustable slitting knife, a circular knife bracket and a smooth roll;

the slitting knife and the smooth roll are arranged on the circular knife bracket, and the slitting knife is positioned above the smooth roll; during die cutting, the material belt is clamped between the slitting knife and the smooth roll.

Further, a pressing shaft roller is arranged above the slitting knife, and the pressing shaft roller is abutted with the roller pillow during die cutting. Prevent the vibration of slitting knife for the cross cutting process is more stable.

Further, the height of the shaft pressing roller is adjustable.

Further, a power roller for driving the smooth roller to rotate is arranged below the smooth roller.

During die cutting, the power roller drives the smooth roller to rotate so as to drive the material belt to move forwards, and the slitting knife basically keeps not rotating and moving, so that the slitting knife and the material belt form relative movement.

Further, bearing boxes are arranged on two sides of the circular knife support. The bearing housing is mainly used for filling both ends of each roller.

Compared with the prior art, the invention has the following advantages:

(1) In the invention, the external threads are arranged on the main shaft, when the distance between the two blades is adjusted, only the blades are required to be rotated, and the moving distance and the rotating radian always show quantitative corresponding relation, so that the distance adjustment is more accurate;

(2) In the invention, a groove is arranged on a main shaft; during positioning, the screw can be inserted and abutted in the groove, so that the positioning is more stable;

(3) The invention overcomes the defect that the common slitting knife is not easy to finely adjust the position, thereby improving the product quality and reducing the debugging time.

Drawings

FIG. 1 is a schematic diagram of a prior art die cutting apparatus;

FIG. 2 is a front view of a slitting knife according to an embodiment;

FIG. 3 is a perspective view of a slitting knife according to an embodiment;

FIG. 4 is a schematic view of a blade in an embodiment;

FIG. 5 is a front view of the slitting knife of the comparative example;

FIG. 6 is a perspective view of the slitting knife in the comparative example;

FIG. 7 is a side view of a prior art die cutting device;

the reference numerals in the figures indicate: roll shaft 10, roll pillow 11, roll body 12, main shaft 14, recess 141, blade 2, press roller 3, smooth roll 4, power roller 5, material area 6, circular knife support 7, bearing box 71.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

Examples

A precision adjustable slitting knife, as shown in fig. 2-4, which comprises a main shaft 14, two roll shafts 10, at least two roll pillows 11 and two blades 2; the main shaft 14 is fixedly arranged between the two roller pillows 11, the roller shaft 10 is fixedly arranged at the outer side of the roller pillow 11, and the blade 2 is arranged on the main shaft 14 in a penetrating way; the main shaft 14 is provided with external threads, and the inner side of the blade 2 is provided with internal threads matched with the external threads.

The blade 2 is provided with a positioning screw hole; in positioning, the screw is inserted into the screw hole and simultaneously abuts against the insert 2 and the spindle 14. Such screw-screw hole positioning is very conventional and is not quite different from the prior art. The main shaft 14 is provided with a groove 141; in positioning, the screw is inserted into the groove 141. The roller pillow 11 is provided with a roller body 12 for increasing the strength. The spindle 14 is arranged coaxially with the roller shaft 10. Each time the blade 2 rotates, the blade 2 moves 5MM, and the position of the blade 2 can be accurately adjusted.

A die cutting device, referring to fig. 1, the device comprises the precise adjustable slitting knife, a circular knife bracket 7 and a smooth roll 4; the slitting knife and the smooth roll 4 are arranged on the circular knife bracket 7, and the slitting knife is positioned above the smooth roll 4; in die cutting, the material strip 6 is clamped between the slitting knife and the smooth roll 4. A pressing shaft roller 3 is arranged above the slitting knife, and the pressing shaft roller 3 is abutted with a roller pillow 11 during die cutting. Prevent the vibration of slitting knife for the cross cutting process is more stable. The height of the shaft pressing roller 3 is adjustable. A power roller 5 for driving the smooth roller 4 to rotate is arranged below the smooth roller 4. During die cutting, the power roller 5 drives the smooth roller 4 to rotate so as to drive the material belt 6 to move forwards, and the slitting knife basically keeps not rotating and moving, so that the slitting knife and the material belt 6 form relative movement. Bearing boxes 71 are arranged on two sides of the circular knife bracket 7. The bearing housing 71 is mainly used for filling both ends of each roller.

Comparative example

The difference from the embodiment is that there is no thread on the spindle 14 'and inside the blade 2', as in fig. 5-6.

The fine adjustment of the position of the blade 2' needs to be adjusted by a rubber hammer and is not easy to adjust to an accurate position, so that time is wasted.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. The precise adjustable slitting knife is characterized by comprising a main shaft (14), at least two roll shafts (10), at least two roll pillows (11) and at least two blades (2);

the main shaft (14) is fixedly arranged between the two roller pillows (11), the roller shaft (10) is fixedly arranged at the outer side of the roller pillow (11), and the blade (2) is arranged on the main shaft (14) in a penetrating way;

the spindle (14) is provided with external threads, and the inner side of the blade (2) is provided with internal threads matched with the external threads.

2. The precise adjustable slitting knife according to claim 1, wherein the knife blade (2) is provided with a positioning screw hole; during positioning, the screw is inserted into the screw hole and simultaneously abuts against the blade (2) and the main shaft (14).

3. The precision adjustable slitting knife according to claim 2, wherein the main shaft (14) is provided with a groove (141); when in positioning, the screw is inserted and abutted in the groove (141).

4. The precise adjustable slitting knife according to claim 1, wherein the roller pillow (11) is provided with a roller body (12) for increasing strength.

5. A precision adjustable slitting knife according to claim 1, wherein the main shaft (14) is arranged coaxially with the roll shaft (10).

6. A die cutting device, characterized in that the device comprises a precision adjustable slitting knife according to any one of claims 1-5, a circular knife holder (7) and a smooth roll (4);

the slitting knife and the smooth roll (4) are arranged on the circular knife bracket (7), and the slitting knife is positioned above the smooth roll (4); during die cutting, the material belt (6) is clamped between the slitting knife and the smooth roll (4).

7. The die cutting device according to claim 6, wherein a pressing shaft roller (3) is arranged above the slitting knife, and the pressing shaft roller (3) is abutted with the roller pillow (11) during die cutting.

8. A die cutting device according to claim 7, wherein the height of the platen roller (3) is adjustable.

9. A die cutting device according to claim 6, wherein a power roller (5) for driving the smooth roller (4) to rotate is arranged below the smooth roller (4).

10. A die cutting device according to claim 6, wherein bearing boxes (71) are provided on both sides of the circular knife holder (7).