Trimming device capable of replacing precise cutting of flat paper

Abstract

The utility model provides a trimming device capable of replacing fine cutting flat paper, which comprises a roll shaft, a trimming hob and a cutting device, the roll shaft can drive roller paper to unwind and rotate, the trimming hob can longitudinally correct and cut the edge position of the roller paper, and the cutting device can transversely cut the roller paper. Due to the adoption of the structural design of the trimming hob, edge position correction can be carried out on paper needing to cut roller paper into flat paper, edge trimming is neat, and the requirement that the cut flat paper is directly fed to a printing machine to be printed can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutting, in particular to a trimming device that can replace the fine cutting of flat paper. Background Art

[0002] At present, when converting roll paper (white cardboard / composite laser paper) into flat paper, a sheet cutter is required. The sheet cutter cuts according to the size specifications required by customers. For example, for a roll of paper with a width of 787 mm, when a customer needs flat paper with dimensions of 787 * 510 mm, the paper is cut to a length requirement of 510 mm. However, for the cut paper with dimensions of 787 * 510 mm, before being printed on a printing machine in a printing factory, a fine cutter is needed to correct the width of all four sides of the paper to ensure that the paper meets the right-angle squareness requirement of 90 degrees at each right-angle position, so that the paper can meet the printing machine requirements and ensure the accurate overprint of the printing pattern at the bite and register of each sheet on the printing machine. Currently, using a fine cutter for angle correction requires additional processes, which is time-consuming, laborious, and has low efficiency. Summary of the Utility Model

[0003] The utility model provides a trimming device that can replace the fine cutting of flat paper, aiming to solve the technical problems of time-consuming, laborious, and low efficiency caused by the need for a fine cutter to correct the width of the paper in the background art.

[0004] To achieve the above object, a trimming device that can replace the fine cutting of flat paper provided by the utility model includes a roller shaft, a trimming hob, and a sheet cutting device. The roller shaft can drive the unwinding rotation of the roll paper, the trimming hob can longitudinally correct and cut the edge position of the roll paper, and the sheet cutting device can transversely cut the roll paper.

[0005] Preferably, the trimming hob corrects and cuts the edge position of the roll paper so that the right-angle squareness of the cut paper is 90 degrees.

[0006] Preferably, the trimming hob includes two hobs, and the hobs correct and cut the edge positions of both sides of the roll paper.

[0007] Preferably, the trimming hob further includes a hob angle adjustment device and a hob angle fixing device. The hob angle adjustment device adjusts the direction of the hob, and the hob angle fixing device fixes the direction of the hob.

[0008] Preferably, the roller shaft includes a lower pressing roller shaft, an upper lifting roller shaft, and a roller shaft at the trimming position. The lower pressing roller shaft presses and conveys the roll paper forward, the upper lifting roller shaft lifts and conveys the roll paper forward, and the roller shaft at the trimming position is arranged below the trimming hob and is adapted to it.

[0009] Preferably, it further includes a trimming strip suction device, which can suck away the trimmed strips.

[0010] Preferably, the sheet cutting device includes a cutting size adjustment device, which can adjust the size of the transverse cutting.

[0011] The trimming device of the utility model that can replace the precision cutting of flat sheets has the following beneficial effects:

[0012] Adopting the structural design of the trimming hob, it can correct the edge position of the paper that needs to cut the web paper into flat sheets, and the edge trimming is neat, which can meet the printing requirements of the flat sheets directly on the printing press after cutting.

[0013] Since a trimming device that can replace the precision cutting of flat sheets is installed on the sheet cutting machine, the flat sheets are also ensured to have a right angle of 90 degrees in all directions during trimming, which can also meet the requirements of the printing press for feeding, thus canceling the process of four-sided precision cutting by the traditional precision cutting machine before printing, improving the production efficiency, canceling one production process, and reducing the product production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a preferred embodiment of the trimming device of the utility model that can replace the precision cutting of flat sheets;

[0015] In the figure:

[0016] 1, roller shaft; 2, trimming hob; 3, sheet cutting device; 11, lower pressing roller shaft; 12, upper lifting roller shaft; 13, roller shaft at the trimming position. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the drawings and specific embodiments.

[0018] The utility model provides a trimming device that can replace the precision cutting of flat sheets for the existing problems.

[0019] In one embodiment, a trimming device that can replace the precision cutting of flat sheets, as Figure 1 shown, includes a roller shaft 1, a trimming hob 2, a sheet cutting device 3 and a trimming strip suction device.

[0020] The roller shaft 1 can drive the unwinding and rotation of the web paper; the web paper is roll-mounted white cardboard or roll-mounted gold and silver card composite paper.

[0021] The trimming hob 2 can longitudinally correct and cut the edge position of the web paper, that is, the paper that needs to cut the web paper into flat sheets, so that the right angle squareness of the cut paper is 90 degrees.

[0022] The sheet cutting device 3 can transversely cut the web paper. The trimmed strip suction device can suck away the trimmed strips. The web paper is cut into flat sheets according to the actual required size, and the flat sheets after trimming and cutting can meet the requirements for directly feeding the printing press with paper.

[0023] The trimming hob 2 includes two hobs, a hob angle adjustment device and a hob angle fixing device. The hobs perform edge position correction cutting on both sides of the web paper. The hob angle adjustment device adjusts the direction of the hobs, and the hob angle fixing device fixes the direction of the hobs.

[0024] The roller shaft 1 includes a lower pressing roller shaft 11, an upper lifting roller shaft 12 and a roller shaft 13 at the trimming position. The lower pressing roller shaft 11 presses down and conveys the web paper forward, the upper lifting roller shaft 12 lifts and conveys the web paper forward, and the roller shaft 13 at the trimming position is arranged below the trimming hob 2 and is adapted to it.

[0025] The sheet cutting device 3 includes a cutting size adjustment device. The cutting size adjustment device can adjust the size of the transverse cutting.

[0026] A trimming device for replacing the fine cutting of flat sheets of the present utility model has the following beneficial effects:

[0027] By adopting the structural design of the trimming hob 2, the edge position of the paper that needs to cut the web paper into flat sheets can be corrected, and the edge trimming is neat, which can meet the printing requirements of the flat sheets directly on the printing press after cutting. The trimming device for replacing the fine cutting process of flat sheets can solve the process link of removing the fine cutting production process of the paper, improve the production efficiency, save the production cost of the product, and at the same time ensure the stability of the product quality.

[0028] Since a trimming device for replacing the fine cutting of flat sheets is installed on the cutting machine, for example, for a roll of paper with a width of 787 mm, 3 mm of trimming is performed on both the left and right sides in the transverse direction of the paper, and the cutting length in the longitudinal direction is 510 m. After cutting and trimming by the cutting machine, the size becomes a 781 * 510 mm paper. When trimming the paper, it also ensures that the right angle of the flat sheet in all directions is 90 degrees, which can also meet the requirements for feeding the printing press, thus eliminating the traditional process of four-sided fine cutting by a fine cutting machine before printing, improving the production efficiency, eliminating one production process, and reducing the production cost of the product.

[0029] It is realized that after the web paper passes through the trimming device and the sheet cutting device of the cutting machine to become flat sheets, there is no need to perform the correction of the right angle squareness of the flat sheets by a Polaroid knife fine cutting machine again, which improves the production efficiency of the product, and thus better ensures the quality of the product.

[0030] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A trimming device that can replace the fine-cut flat paper, characterized in that, It includes a roller shaft (1), a trimming hob (2) and a sheet cutting device (3). The roller shaft (1) can drive the unwinding and rotation of the web paper. The trimming hob (2) can longitudinally correct and cut the edge position of the web paper. The sheet cutting device (3) can transversely cut the web paper.

2. The trimming device for replacing precision-cut flat paper according to claim 1, characterized in that, The trimming hob (2) corrects and cuts the edge position of the web paper, so that the right-angle squareness of the paper after sheet cutting is 90 degrees.

3. The trimming device capable of replacing the precision cutting of flat paper according to claim 1, characterized in that, The trimming hob (2) includes two hobs, and the hobs correct and cut the edge positions of both sides of the web paper.

4. An edge trimming device for replacing precision-cut flat paper according to claim 3, characterized in that, The trimming hob (2) further includes a hob angle adjusting device and a hob angle fixing device. The hob angle adjusting device adjusts the direction of the hob, and the hob angle fixing device fixes the direction of the hob.

5. The trimming device for replacing the precision cutting of flat paper according to claim 4, characterized in that, The roller shaft (1) includes a lower pressing roller shaft (11), an upper lifting roller shaft (12) and a roller shaft (13) at the trimming position. The lower pressing roller shaft (11) presses down and conveys the web paper forward. The upper lifting roller shaft (12) lifts and conveys the web paper forward. The roller shaft (13) at the trimming position is arranged below the trimming hob (2) and is adapted to it.

6. The trimming device for replacing the precision cutting of flat paper according to claim 1, characterized in that, It further includes a trimming strip sucking device, and the trimming strip sucking device can suck away the trimmed strips.

7. An edge trimming device for replacing precision cutting of flat sheets according to claim 1, characterized in that, The sheet cutting device (3) includes a cutting size adjusting device, and the cutting size adjusting device can adjust the size of the transverse cutting.

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