Cutting device for four-color printing machine

Abstract

The utility model discloses a cutting device for a four-color printing machine, which relates to the field of paper cutting and comprises a workbench, a bearing support, a hydraulic cylinder, a knife rest, a knife head and a pressing mechanism, the bearing support is fixedly mounted on the upper end face of the workbench, the hydraulic cylinder is fixedly mounted on the upper end face of the bearing support, and the knife head is detachably mounted on the inner wall of the knife rest. The pressing mechanism comprises a bearing plate, a pressing plate and a connecting shaft, the connecting shaft is fixedly installed at the movable end of the hydraulic cylinder, the end, away from the hydraulic cylinder, of the connecting shaft is fixedly connected with the outer wall of the tool rest, the bearing plate is adjustably arranged on the outer wall of the connecting shaft, the pressing plate is elastically installed on the outer wall of the bearing plate, and a threaded sleeve is rotationally installed on the upper end face of the bearing plate. Through cooperation of the structures, paper can be prevented from wrinkling and deforming as much as possible, the cutting quality is improved, after cutting, the pressing plate is jacked and pressed through elastic force to squeeze the paper, the paper is kept in a flat state, arrangement and taking-out are facilitated, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutting, in particular to a cutting device for a four-color printing machine. Background Art

[0002] Four-color printing presses use black, medium blue, brown, and green inks to achieve lithographic printing of image and text reproduction. It is a commonly used printing method today. The paper needs to be cut after inkjet printing.

[0003] For example, Chinese patent: Publication No. CN218534687U, a cutting device for a four-color printing press, includes a body, a rotating shaft is arranged inside the body, a crawler is arranged on the surface of the rotating shaft, an operating panel is arranged on the side of the telescopic column, a support frame is arranged at the upper end of the body, a limit plate is arranged on the top surface of the support frame, and a cutting mechanism is arranged on the top of the support frame. The cutting device for a four-color printing press, through the arrangement of crawlers, telescopic columns, operating panels, limit plates and movable columns, during use, the limit plate falls, the crawlers move the operating panel to the position of the limit plate, so that one side of the paper is aligned, according to the requirements of different size cutting, the cylinder moves left and right on the top surface of the support frame, the cylinder pushes the movable column to move, and the paper is cut, the telescopic column pushes the operating panel upward, and the paper to be cut is rotated 90 degrees to facilitate cutting of other sides, and the operating panel transfers the cut paper to the other side, so that the work is systematized.

[0004] Although it is convenient to cut other sides and easy to operate, during actual use, the staff found that because the blade is pressed by the upper surface of the paper during cutting, the paper on both sides of the cutting part will be obviously deformed, resulting in paper deformation and messy after cutting, affecting the cutting effect.

[0005] To this end, we propose a cutting device for a four-color printing press. Utility Model Content

[0006] The utility model provides a cutting device for a four-color printing machine which can prevent paper from being deformed during the cutting process.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting device for a four-color printing machine, comprising a workbench, a supporting bracket, a hydraulic cylinder, a tool holder, a tool head and a pressing mechanism, the supporting bracket being fixedly mounted on the upper end surface of the workbench, the hydraulic cylinder being fixedly mounted on the upper end surface of the supporting bracket, and the tool head being detachably mounted on the inner wall of the tool holder.

[0008] The pressing mechanism comprises a bearing plate, a pressing plate and a connecting shaft. The connecting shaft is fixedly mounted on the movable end of the hydraulic cylinder. One end of the connecting shaft away from the hydraulic cylinder is fixedly connected to the outer wall of the tool holder.

[0009] The bearing plate is adjustably arranged on the outer wall of the connecting shaft, and the pressing plate is elastically installed on the outer wall of the bearing plate.

[0010] Preferably, a threaded sleeve is rotatably mounted on the upper end surface of the bearing plate, the threaded sleeve is connected to the outer wall of the connecting shaft through internal and external threads, and a guide rod slidably connected to the bearing bracket is fixedly mounted on the outer wall of the bearing plate.

[0011] Preferably, a mounting plate is slidably mounted on the upper end surface of the bearing plate, a connecting spring is fixedly connected to the bottom surface of the mounting plate, and the other end of the connecting spring is fixedly connected to the upper end surface of the pressing plate.

[0012] Preferably, a control rod is slidably mounted on the outer wall of the supporting plate, the other end of the control rod is fixedly connected to the outer wall of the pressing plate, the outer wall of the control rod is connected to a control nut via internal and external threads, and the outer wall of the control nut fits against the upper end surface of the mounting plate.

[0013] Preferably, a T-shaped slot is provided on the upper end surface of the bearing plate, a guide slider is slidably mounted in the inner cavity of the T-shaped slot, and the outer wall of the guide slider is fixedly connected to the bottom surface of the mounting plate.

[0014] Preferably, a control screw is rotatably mounted on the side wall of the bearing plate, the control screw passes through the guide slider, and is connected to the guide slider through internal and external thread cooperation.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model uses a carrying plate, a pressing plate and a connecting shaft, wherein the connecting shaft connects a hydraulic cylinder and a cutter head, the carrying plate is adjustably arranged on an outer wall of the connecting shaft, and the pressing plate is elastically arranged on the outer wall of the carrying plate. When cutting, the carrying plate and the connecting shaft have the same motion state. When cutting paper, the hydraulic cylinder controls the carrying plate, the connecting shaft and the cutter head to descend synchronously, and presses both sides of the paper cutting position by the pressing plate, thereby preventing the paper from warping, preventing the paper from wrinkling and deforming as much as possible, and improving the cutting quality. After cutting, the pressing plate is pressed by elastic force to squeeze the paper, so that the paper remains in a flat state, which is convenient for sorting and taking out, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation of the load-bearing plate in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the pressing plate in the utility model;

[0020] Figure 4 It is a schematic diagram of the installation of the cutter head in the utility model.

[0021] In the figure: 1. workbench; 2. load-bearing bracket; 3. hydraulic cylinder; 4. connecting spring; 5. pressing plate; 6. control screw; 7. control rod; 8. threaded sleeve; 9. load-bearing plate; 10. mounting plate; 11. tool holder; 12. tool head; 13. control nut; 14. guide rod; 15. connecting shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-4 The figure shows a cutting device for a four-color printing machine, including a workbench 1, a supporting bracket 2, a hydraulic cylinder 3, a tool holder 11, a tool head 12 and a pressing mechanism. The supporting bracket 2 is fixedly installed on the upper end surface of the workbench 1. The supporting bracket 2 is a common U-shaped frame. A accommodating groove for preventing materials is provided on the upper end surface of the workbench 1.

[0025] The hydraulic cylinder 3 is fixedly mounted on the upper end surface of the supporting bracket 2, and the cutter head 12 is detachably mounted on the inner wall of the cutter holder 11. The hydraulic cylinder 3 is used to control the lifting and lowering of the cutter head 12 to achieve paper cutting.

[0026] The pressing mechanism includes a supporting plate 9, a pressing plate 5 and a connecting shaft 15. The connecting shaft 15 is fixedly mounted on the movable end of the hydraulic cylinder 3. The end of the connecting shaft 15 away from the hydraulic cylinder 3 is fixedly connected to the outer wall of the tool holder 11. The tool holder 11 and the movable end of the hydraulic cylinder 3 are connected by the connecting shaft 15 so that the lifting and lowering of the tool head 12 can be controlled by the hydraulic cylinder 3.

[0027] The carrying plate 9 is adjustably arranged on the outer wall of the connecting shaft 15 , and the pressing plate 5 is elastically installed on the outer wall of the carrying plate 9 . During cutting, the carrying plate 9 and the connecting shaft 15 have the same motion state.

[0028] When cutting paper, the hydraulic cylinder 3 controls the connecting shaft 15 and the cutter head 12 to descend synchronously, and the supporting plate 9 descends synchronously until the pressing plate 5 fits the upper surface of the paper, and then continues to control the connecting shaft 15 to descend, and the cutter head 12 cuts the paper.

[0029] There are two pressing plates 5, which are respectively located on both sides of the cutter head 12. When cutting paper, the pressing plates 5 press both sides of the paper cutting position to prevent the paper from curling up. After cutting, the pressing plates 5 are pressed by elastic force to squeeze the paper, so that the paper remains flat, which is convenient for sorting and taking out, thereby improving work efficiency.

[0030] A threaded sleeve 8 is rotatably mounted on the upper end surface of the bearing plate 9, and the threaded sleeve 8 is connected to the outer wall of the connecting shaft 15 by means of internal and external threads. By rotating the threaded sleeve 8, the bearing plate 9 can be slidably adjusted along the axial direction of the connecting shaft 15 to achieve an adjustable connection between the bearing plate 9 and the connecting shaft 15.

[0031] By rotating and adjusting the threaded sleeve 8 to control the lifting of the carrying plate 9, the distance between the cutter head 12 and the carrying plate 9 can be changed to facilitate cutting of papers of different thicknesses. Before cutting, the distance between the carrying plate 9 and the cutter head 12 is adjusted to prevent the carrying plate 9 from contacting the outer wall of the paper during cutting and preventing the cutter head 12 from descending.

[0032] A guide rod 14 slidably connected to the bearing bracket 2 is fixedly mounted on the outer wall of the bearing plate 9 . The guide rod 14 can prevent the bearing plate 9 from rotating along the axis of the connecting shaft 15 .

[0033] Example 2

[0034] See also Figure 1-4 This embodiment further illustrates Example 1:

[0035] The upper end surface of the bearing plate 9 is slidably mounted with a mounting plate 10 , and the mounting plate 10 can be slidably adjusted along the upper end surface of the bearing plate 9 .

[0036] The bottom surface of the mounting plate 10 is fixedly connected with a connecting spring 4, and the other end of the connecting spring 4 is fixedly connected to the upper end surface of the pressing plate 5. The elastic force of the connecting spring 4 realizes the elastic connection between the pressing plate 5 and the supporting plate 9, thereby keeping the pressing plate 5 pressing the paper during the cutting process to prevent the paper from loosening and improve the working efficiency of the cutting operation.

[0037] A control rod 7 is slidably installed on the outer wall of the supporting plate 9, and the other end of the control rod 7 is fixedly connected to the outer wall of the pressing plate 5. By setting the control rod 7, the sliding trajectory of the pressing plate 5 can be limited, thereby improving the sliding stability of the pressing plate 5. The outer walls of the two pressing plates 5 are both provided with control rods 7, and the two control rods 7 are fixedly connected by a cross beam, thereby preventing the control rod 7 from rotating, and further preventing the pressing plate 5 from rotating.

[0038] The outer wall of the control rod 7 is connected to the control nut 13 through internal and external threads. The outer wall of the control nut 13 fits with the upper end surface of the mounting plate 10. By rotating the control nut 13, the distance between the mounting plate 10 and the pressing plate 5 can be changed, thereby adjusting the elastic force of the connecting spring 4 on the pressing plate 5. The maximum pressure of the pressing plate 5 on the paper can be adjusted according to actual use requirements.

[0039] A T-slot is provided on the upper end surface of the supporting plate 9, and a guide slider is slidably installed in the inner cavity of the T-slot. The outer wall of the guide slider is fixedly connected to the bottom surface of the mounting plate 10. The guide slider is a T-slot that matches the T-slot. Through the cooperation of the guide slider and the T-slot, the sliding connection between the mounting plate 10 and the supporting plate 9 is realized.

[0040] The sliding mounting plate 10 controls the sliding of the pressing plate 5 and adjusts the position of the pressing plate 5 to adapt to the pressing of papers of different widths.

[0041] In order to facilitate the sliding adjustment of the mounting plate 10, a control screw 6 is rotatably installed on the side wall of the supporting plate 9. The control screw 6 passes through the guide slider and is connected to the guide slider through internal and external threads. The control screw 6 is rotated to control the sliding of the guide slider, thereby controlling the sliding adjustment of the mounting plate 10 to achieve the position adjustment of the pressing plate 5.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for a four-color printing press, characterized in that: The invention comprises a workbench (1), a bearing bracket (2), a hydraulic cylinder (3), a tool holder (11), a tool head (12) and a pressing mechanism, wherein the bearing bracket (2) is fixedly mounted on the upper end surface of the workbench (1), the hydraulic cylinder (3) is fixedly mounted on the upper end surface of the bearing bracket (2), and the tool head (12) is detachably mounted on the inner wall of the tool holder (11); The pressing mechanism comprises a bearing plate (9), a pressing plate (5) and a connecting shaft (15); the connecting shaft (15) is fixedly mounted on the movable end of the hydraulic cylinder (3); and one end of the connecting shaft (15) away from the hydraulic cylinder (3) is fixedly connected to the outer wall of the tool holder (11); The bearing plate (9) is adjustably arranged on the outer wall of the connecting shaft (15), and the pressing plate (5) is elastically mounted on the outer wall of the bearing plate (9).

2. A cutting device for a four-color printing press according to claim 1, characterized in that: A threaded sleeve (8) is rotatably mounted on the upper end surface of the bearing plate (9), and the threaded sleeve (8) is connected to the outer wall of the connecting shaft (15) through internal and external thread cooperation. A guide rod (14) is fixedly mounted on the outer wall of the bearing plate (9) and is slidably connected to the bearing bracket (2).

3. The cutting device for a four-color printing press according to claim 1, characterized in that: A mounting plate (10) is slidably mounted on the upper end surface of the bearing plate (9), a connecting spring (4) is fixedly connected to the bottom surface of the mounting plate (10), and the other end of the connecting spring (4) is fixedly connected to the upper end surface of the pressing plate (5).

4. A cutting device for a four-color printing press according to claim 3, characterized in that: A control rod (7) is slidably mounted on the outer wall of the bearing plate (9), the other end of the control rod (7) is fixedly connected to the outer wall of the pressing plate (5), the outer wall of the control rod (7) is connected to a control nut (13) through internal and external threads, and the outer wall of the control nut (13) is in contact with the upper end surface of the mounting plate (10).

5. The cutting device for a four-color printing press according to claim 3, characterized in that: The upper end surface of the bearing plate (9) is provided with a T-shaped groove, the inner cavity of the T-shaped groove is slidably mounted with a guide slider, and the outer wall of the guide slider is fixedly connected to the bottom surface of the mounting plate (10).

6. A cutting device for a four-color printing press according to claim 5, characterized in that: A control screw (6) is rotatably mounted on the side wall of the bearing plate (9); the control screw (6) passes through the guide slider and is connected to the guide slider through internal and external thread matching.

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