Paper rolling and cutting part of photogravure press
By setting up an automatic paper cutting mechanism between the printing press and the winding section, and utilizing the swing of the rotating main arm and the cutter, as well as the swingable rubber roller to provide tension, the problems of inaccurate paper cutting and unstable paper force in small and medium-sized flexible packaging printing enterprises are solved, achieving an efficient and stable paper cutting process and improving the automation level of the equipment.
Patent Information
- Application Number
- CN202423004971.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Small and medium-sized flexible packaging printing enterprises have low levels of automation in their printing equipment. Manual paper cutting leads to inaccurate cutting, affecting the quality of finished products. Furthermore, unstable paper tension causes cutting failures, increasing production losses.
An automatic paper cutting mechanism is installed between the printing press and the winding section. Automatic paper cutting is achieved by rotating the main arm and swinging the cutter. Combined with the oscillating rubber roller to provide tension, the paper cutting quality and efficiency are ensured.
It improves the efficiency and quality of paper cutting, avoids the inaccuracies of manual paper cutting, reduces production losses, and enhances the automated production capacity of printed materials.
Smart Images
Figure CN223820622U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to printing equipment technical field discloses a gravure printing machine winding and cutting paper part. BACKGROUND
[0002] In recent years, with the sustained and rapid development of national economy, people's material and cultural life level is constantly improved, consumption concept also changes, the demand for soft package printing products is more and more big and the requirement for printing product delicacy is more and more high. For some small and medium-sized soft package printing enterprises, due to the limited funds of enterprises, only through upgrading the original equipment, the purpose of improving equipment technical level and improving production capacity can be achieved. Especially under the background of the rapid development of foreign gravure printing machine new technology, the relatively backward printing equipment of domestic enterprises does not have enough competitiveness, and many enterprises still exist manual winding and unwinding process, which is not conducive to the automatic production of printing products, and has influence on the yield and quality of printing products.
[0003] Therefore, our company has developed a double-station winding machine for gravure printing machine, however, in order to ensure the continuous process, manual assistance is needed for cutting operation after one station winding is completed, so as to cut the wound roll and carry out winding operation in another station. However, manual cutting cannot guarantee the cutting quality, which may lead to inaccurate cutting and affect the quality of finished products. At the same time, due to the unstable tension of printing paper, cutting failure may occur in the cutting process, increasing the loss in production. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the utility model provides a gravure printing machine winding and cutting paper part, an automatic cutting mechanism is arranged between the printing machine and the winding part, the automatic cutting operation of the winding part is realized through the rotation of the main arm and the swing of the cutting knife, and the rubber roller that can swing is arranged, the tension is provided on one side of the cutting knife, and the efficiency and quality of cutting are improved.
[0005] The technical scheme provided by the utility model is as follows:
[0006] A gravure printing machine winding and cutting paper part, comprising a rack, a main rotating shaft is arranged on the rack, two symmetrical rotating main arms are fixed on the main rotating shaft, a cutting knife rotating shaft and a rubber roller rotating shaft are arranged between the two rotating main arms, a cutting knife arm is arranged on the cutting knife rotating shaft and used for driving the cutting knife to rotate around the cutting knife rotating shaft and to the side of the printing paper, a rubber roller arm is arranged on the rubber roller rotating shaft and used for driving the rubber roller to rotate around the rubber roller rotating shaft.
[0007] Two second air cylinders are arranged on the rotating main arm, a cutting knife moving arm is arranged on the cutting knife rotating shaft and connected with the output end of the second air cylinder.
[0008] The rotating main arm is provided with two symmetrical third air cylinders, and the rubber roller rotating shaft is provided with a rubber roller movable arm connected with the output end of the third air cylinder.
[0009] In some embodiments, the main rotating shaft is connected with the rack through a mounting plate and a rotating connection, the rotating main arm is fixedly connected with the main rotating shaft through a connecting flange, the rack is axially provided with two symmetrical first air cylinders, the output end of the first air cylinder is axially connected with the rotating main arm, and the first air cylinder is used for driving the rotating main arm to rotate around the main rotating shaft.
[0010] In some embodiments, the rubber roller rotating shaft is located above the cutter rotating shaft, and the cutter movable arm drives the cutter to rotate downward for cutting.
[0011] In some embodiments, the rubber roller rotating shaft is located below the cutter rotating shaft, and the cutter movable arm drives the cutter to rotate upward for cutting.
[0012] In some embodiments, the cutter arm is in a C shape, and the C-shaped cutter arm is wrapped around the rubber roller rotating shaft and the rubber roller.
[0013] In some embodiments, the cutter is made of saw steel.
[0014] In some embodiments, the rubber roller is a seamless pipe, and the surface of the seamless pipe is provided with nitrile rubber.
[0015] In some embodiments, a supporting shaft is arranged between the rotating main arms.
[0016] In summary, the beneficial effects of the utility model are as follows:
[0017] (1) The utility model sets the cutter structure between the printing machine and the winding part or the unwinding part, realizes the automatic paper cutting operation of the winding part through the swing of the rotating main arm and the swing of the cutter, sets the rubber roller which can swing, provides the tension on the side of the cutter, and improves the efficiency and quality of the paper cutting.
[0018] (2) When the utility model is applied to the winding part, in order to ensure the tension during the paper cutting, since the winding part provides the power traction, the paper tape needs to pass through the rubber roller and then pass through the cutter during the winding, therefore, the cutter arm is set to be in a C shape, the cutter can pass the rubber roller and reach the rear of the rubber roller, and the swing of the rubber roller is not interfered, and the quality of the paper cutting is improved. DRAWINGS
[0019] Figure 1 It is a front view structural schematic diagram of example 1.
[0020] Figure 2 It is a side view structural schematic diagram of example 1.
[0021] Figure 3 It is Figure 1 a sectional view in the direction of A-A.
[0022] Figure 4 for Figure 1 Enlarged view at point B in the middle;
[0023] Figure 5 for Figure 3 Enlarged view at point C;
[0024] Figure 6 This is a schematic diagram of the paper cutting process in Example 1;
[0025] Figure 7 This is a schematic diagram of the main view structure of Example 2;
[0026] Figure 8 This is a side view structural diagram of Example 2;
[0027] Figure 9 for Figure 7 Sectional view along the AA direction;
[0028] Figure 10 for Figure 7 Enlarged view at point B in the middle;
[0029] Figure 11 for Figure 9 Enlarged view at point C;
[0030] Figure 12 This is a schematic diagram of the paper cutting process in Example 2.
[0031] The attached figures are labeled as follows:
[0032] 1. Frame; 2. Main rotating shaft; 3. Rotating main arm; 4. Cutter shaft; 5. Glue roller shaft; 6. First cylinder; 7. Second cylinder; 8. Third cylinder; 9. Paper tape; 101. Unwinding section; 102. Rewinding section; 11. Support shaft; 21. Mounting plate; 22. Connecting flange; 41. Cutter arm; 42. Cutter; 43. Cutter boom; 44. Cutter seat; 51. Glue roller arm; 52. Glue roller; 53. Glue roller boom. Detailed Implementation
[0033] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.
[0034] Example 1
[0035] like Figures 1-6As shown, the embodiment provides a gravure printing machine winding and cutting part, the rubber roller rotating shaft 5 is located above the cutter rotating shaft 4, used for cutting and connecting at the unwinding part 101, comprising a rack 1, the rack 1 is provided with a main rotating shaft 2, the main rotating shaft 2 is fixed with two symmetrical rotating main arms 3, the two rotating main arms 3 are provided with the cutter rotating shaft 4 and the rubber roller rotating shaft 5, the cutter rotating shaft 4 is provided with a cutter arm 41 for driving the cutter 42 to rotate around the cutter rotating shaft 4 and to the printed paper side, the rubber roller rotating shaft 5 is provided with a rubber roller arm 51 for driving the rubber roller 52 to rotate around the rubber roller rotating shaft 5.
[0036] Specifically, the rack 1 of the cutting part is two vertical steel frames, one side of the rack 1 is the unwinding part 101, the other side of the rack 1 is the printing machine, the main rotating shaft 2 is rotatably connected between the two steel frames through a bearing, the rotating main arm 3 is fixed relative to the main rotating shaft 2, so the rotating main arm 3 can swing synchronously with the main rotating shaft 2 under the action of an external force, the rubber roller rotating shaft 5 and the cutter rotating shaft 4 are sequentially arranged between the two rotating main arms 3 from top to bottom, the cutter rotating shaft 4 and the rubber roller rotating shaft 5 can freely rotate between the two rotating main arms 3, the cutter rotating shaft 4 is fixed with the cutter arm 41, the cutter 42 is arranged at the end of the cutter arm 41 towards the unwinding part 101 side, so the cutter rotating shaft 4 can drive the cutter 42 to rotate around the cutter rotating shaft 4 from top to bottom, and cut and connect the paper tape 9 of the cutter part.
[0037] The outer side of the rotating main arm 3 is provided with two symmetrical second air cylinders 7, the cutter rotating shaft 4 is provided with a cutter moving arm 43 connected with the output end of the second air cylinder 7. The bottom of the second air cylinder 7 is connected with the rotating main arm 3, the output end of the second air cylinder 7 is connected with the cutter moving arm 43, the cutter moving arm 43 is perpendicular to the cutter rotating shaft 4 and fixedly connected with the cutter rotating shaft 4, so one end of the cutter moving arm 43 pushed by the second air cylinder 7 can drive the cutter rotating shaft 4 to rotate, thereby driving the cutter arm 41 to swing, and further driving the cutter 42 to swing.
[0038] The outer side of the rotating main arm 3 is provided with two symmetrical third air cylinders 8, the rubber roller rotating shaft 5 is provided with a rubber roller moving arm 53 connected with the output end of the third air cylinder 8. The bottom of the third air cylinder 8 is connected with the rotating main arm 3, the output end of the third air cylinder 8 is connected with the rubber roller moving arm 53, the rubber roller moving arm 53 is perpendicular to the rubber roller rotating shaft 5 and fixedly connected with the rubber roller rotating shaft 5, so one end of the rubber roller moving arm 53 pushed by the third air cylinder 8 can drive the rubber roller rotating shaft 5 to rotate, thereby driving the rubber roller arm 51 to swing, and further driving the rubber roller 52 to swing.
[0039] In the embodiment, the main rotating shaft 2 is rotatably connected to the rack 1 through a mounting plate 21, the rotating main arm 3 is fixedly connected with the main rotating shaft 2 through a connecting flange 22, the rack 1 is axially connected with two symmetrical first air cylinders 6, the output end of the first air cylinder 6 is connected with the rotating main arm 3, used for driving the rotating main arm 3 to rotate around the main rotating shaft 2.
[0040] Specifically, the mounting plate 21 is fixed on the frame by several screws, and the main rotating shaft 2 is rotatably connected to the mounting plate 21 by a bearing. The rotating main arm 3 rotates around the main rotating shaft 2 under the pushing of the first cylinder 6.
[0041] The working principle of the embodiment is as follows:
[0042] The unwinding part 101 performs the unwinding operation of the paper tape 9. When one paper roll is about to be unwound, the paper tape 9 needs to be cut and a new paper roll needs to be connected, so as to complete the cutting and connecting operation of the paper tape.
[0043] Firstly, the first cylinder 6 is pushed to rotate the main rotating arm 3 to the side of the paper tape 9 and the roll, and the third cylinder 8 is pushed to make the rubber roller 52 abut against the paper tape 9 upward to provide tension for the paper tape 9. Then the second cylinder 7 is pushed, and the cutter arm 41 swings the cutter 42 to the right side until the paper tape 9 is cut, and the cutting operation of the paper tape 9 is completed. Figure 6
[0044] Embodiment 2
[0045] The embodiment is formed on the basis of the embodiment 1. By changing the positions of the rubber roller rotating shaft 5 and the cutter rotating shaft 4 and the structure of the cutter arm 41, a cutter structure for cutting and connecting at the winding part 102 is provided.
[0046] In the embodiment, the rubber roller rotating shaft 5 is located below the cutter rotating shaft 4, and the cutter moving arm 43 rotates the cutter 42 from below to above.
[0047] The cutter 42 is arranged at the end of the cutter arm 41 on the side of the winding part 102, so that the cutter rotating shaft 4 can rotate the cutter 42 from below to above around the cutter rotating shaft 4 to cut and connect the paper tape 9.
[0048] Further, the cutter arm 41 is in a C shape, and the C-shaped cutter arm 41 wraps around the rubber roller rotating shaft 5 and the rubber roller 52.
[0049] Specifically, in order to ensure the tension during cutting, since the winding part 102 provides power traction, the paper tape needs to pass through the rubber roller 52 and then pass through the cutter 42 during winding. Therefore, the C-shaped cutter arm 41 can make the cutter 42 pass through the rubber roller 52 to the rear of the rubber roller 52 without interfering with the swinging of the rubber roller 52, thereby improving the quality of the cut and connected paper tape.
[0050] A cutter seat 44 is arranged below the end of the cutter arm 41 away from the cutter moving arm 43, and the cutter 42 is fixed below the cutter seat 44 by bolts.
[0051] The cutter seat 44 is fixed on the cutter arm 41 through L-shaped plates on both sides and bolts, a plurality of screw holes are formed in the cutter seat 44, and the cutter 42 is fixed below the cutter seat 44 through bolts penetrating the screw holes and is arranged towards the winding part 102.
[0052] Further, the cutter 42 is a steel saw, the steel saw is a strip-shaped steel saw, and the saw teeth are arranged towards the winding part 10, so that the paper tape 9 can be cut during the swinging.
[0053] The rubber roller 52 is a seamless pipe, the surface of the seamless pipe is provided with nitrile rubber, the rubber roller 52 is wrapped with nitrile rubber, is not easy to be corroded, can bear oil, acid and alkali, and has a Shore hardness of 20-100°, so that the durability of the rubber roller 52 can be ensured.
[0054] The working principle of the embodiment is as follows:
[0055] The winding part 102 performs the winding operation of the paper tape 9, after a paper roll is wound, the paper tape needs to be cut and a new paper roll needs to be wound.
[0056] Firstly, the first air cylinder 6 is pushed to rotate the main rotating arm 3 to below the paper tape 9 and the roll, the third air cylinder 8 is pushed to make the rubber roller 52 resist the paper tape 9 upwards to provide tension for the paper tape 9, then the second air cylinder 7 is pushed to make the cutter arm 41 swing upwards with the cutter 42 until the paper tape 9 is cut, and the cutting operation of the paper tape 9 is completed.
[0057] It should be noted that the implementation manners not shown or described in the drawings or the specification are forms known by those skilled in the art, and are not described in detail. In addition, the definitions of the elements and the method described above are not limited to the various specific structures, shapes or manners mentioned in the embodiment.
[0058] It should be further noted that the present document can provide examples of parameters containing specific values, but these parameters do not need to be exactly equal to the corresponding values, but can be approximately equal to the corresponding values within an acceptable error tolerance or design constraint. The direction terms mentioned in the embodiment, such as “up”, “down”, “front”, “back”, “left”, “right”, “in”, “out” and the like, are only with reference to the direction of the drawings, and are not used to limit the protection scope of the present application.
[0059] The above description shows and describes the preferred embodiments of the present application, as described above, it should be understood that the present application is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application conceived in the present application by the above-mentioned teaching or related art or knowledge. The modification and change made by those skilled in the art without departing from the spirit and scope of the present application should be within the protection scope of the claims of the present application.
Claims
1. A paper winding and cutting section for a gravure printing machine, comprising a frame (1), characterized in that, The frame (1) is provided with a main rotating shaft (2), and two symmetrical rotating main arms (3) are fixed on the main rotating shaft (2). Between the two rotating main arms (3) are a cutter rotating shaft (4) and a rubber roller rotating shaft (5). The cutter rotating shaft (4) is provided with a cutter arm (41) to drive the cutter (42) to rotate around the cutter rotating shaft (4) and toward the printing paper side. The rubber roller rotating shaft (5) is provided with a rubber roller arm (51) to drive the rubber roller (52) to rotate around the rubber roller rotating shaft (5). The rotating main arm (3) is equipped with two symmetrical second cylinders (7), and the cutter shaft (4) is equipped with a cutter arm (43) connected to the output end of the second cylinders (7); The rotating main arm (3) is equipped with two symmetrical third cylinders (8), and the rubber roller shaft (5) is equipped with a rubber roller moving arm (53) connected to the output end of the third cylinder (8).
2. The rewinding and cutting section of the gravure printing machine according to claim 1, characterized in that, The main rotating shaft (2) is rotatably connected to the frame (1) via the mounting plate (21). The rotating main arm (3) is fixedly connected to the main rotating shaft (2) via the connecting flange (22). Two symmetrical first cylinders (6) are axially connected on the frame (1). The output end of the first cylinder (6) is axially connected to the rotating main arm (3) to drive the rotating main arm (3) to rotate around the main rotating shaft (2).
3. The paper winding and cutting section of the gravure printing machine according to claim 1, characterized in that, The rubber roller shaft (5) is located above the cutter shaft (4), and the cutter arm (43) drives the cutter (42) to rotate from top to bottom for cutting.
4. The rewinding and cutting section of the gravure printing machine according to claim 1, characterized in that, The rubber roller shaft (5) is located below the cutter shaft (4), and the cutter arm (43) drives the cutter (42) to rotate from bottom to top for cutting.
5. The rewinding and cutting section of the gravure printing machine according to claim 4, characterized in that, The cutter arm (41) is C-shaped, and the cross section of the C-shaped cutter arm (41) surrounds and encloses the rubber roller shaft (5) and the rubber roller (52).
6. The paper winding and cutting section of the gravure printing machine according to claim 1, characterized in that, The cutter (42) is a saw blade.
7. The rewinding and cutting section of the gravure printing machine according to claim 1, characterized in that, The rubber roller (52) is a seamless tube, and the surface of the seamless tube is provided with nitrile rubber.
8. The paper winding and cutting section of the gravure printing machine according to claim 1, characterized in that, A support shaft (11) is provided between the rotating main arms (3).