Linear motor paper clamping and page dragging device of roll paper flexo printing machine

Abstract

The utility model relates to a roll paper flexographic printing machine linear motor paper clamping and page dragging device which comprises two bottom plates, a linear motor is fixedly installed on the upper surfaces of the two bottom plates, supporting frames are fixedly installed on the upper surfaces of the two bottom plates and located on the two sides of the linear motor, and the tops of the supporting frames are in a concave shape. And paper clamping structures for clamping and hauling printing materials are arranged above the two supporting frames. According to the linear motor paper clamping and page dragging device of the roll paper flexo printing machine, a linear motor driving mode is adopted to replace a transmission shaft, cam, crank arm and multi-connecting-rod combined driving mode, and the linear motor does not need to be daily refueled and maintained, so that workers do not need to carry out a refueling procedure on the linear motor, the working intensity of the operators is reduced, and the working efficiency is improved. The linear motor is provided with the organ type dust cover, dust deposition is effectively reduced, abrasion is small, and transmission precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of roll paper flexographic printing machines, in particular to a linear motor paper clamping and page dragging device for a roll paper flexographic printing machine. Background Art

[0002] Web flexographic printing press is a printing device that uses flexographic printing technology and is specially used for printing roll-shaped paper. This type of printing press is mainly composed of unwinding and feeding parts, printing parts, drying parts and rewinding and receiving parts, and has the advantages of automation, high efficiency and stable printing quality.

[0003] In a web-fed flexographic printing press, the linear motor paper clamping and dragging device is a very important part. Driven by a linear motor, the device can accurately control the position and speed of paper or paperboard, thereby achieving stable transportation. The clamping mechanism firmly clamps the paper or paperboard to prevent it from deflecting or slipping during transportation, while the dragging mechanism provides power to move the clamping mechanism according to the set path and speed to transport the paper or paperboard to the specified position.

[0004] The conventional paper clamping and pulling device of the web-fed flexographic printing machine is often driven by a combination of a transmission shaft, a cam, a crank arm and a multi-link. This mechanical drive method converts rotary motion into linear motion through a series of complex connecting rods and cam mechanisms, thereby driving the paper clamping and pulling device. However, the cam in the paper clamping and pulling device needs to be lubricated with lubricating oil regularly every day, which increases the workload and working time of the operator. The cam is prone to wear when there is a lack of lubricating oil. The cam device is not protected by a dust cover, and the wear of the cam will be accelerated when dust is deposited, resulting in inaccurate positioning of the paper clamp and unstable operation. Therefore, the utility model is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a linear motor paper clamping and page dragging device for a web-fed flexographic printing press, which has the advantages of being convenient for clamping and dragging printing materials such as paper or cardboard.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a linear motor paper clamping and page dragging device for a web-fed flexographic printing machine, comprising two base plates, linear motors are fixedly mounted on the upper surfaces of the two base plates, support frames are fixedly mounted on the upper surfaces of the two base plates and on both sides of the linear motors, and the tops of the support frames are concave, and paper clamping structures for clamping and dragging printing materials are arranged above the two support frames.

[0007] The paper clamping structure comprises a rotating member arranged on the upper surface of the support frame, one end of the rotating member is provided with a driving member capable of driving the rotating member to rotate, and the other end of the rotating member is provided with a clamping member capable of clamping the printing material.

[0008] Furthermore, the rotating part includes a concave fixing plate arranged on the upper surface of the supporting frame, a supporting plate is fixedly installed on the upper surface of the fixing plate, a first placing plate is fixedly installed on the upper surface of the supporting plate, a second placing plate is arranged above the other end of the supporting plate, and a rotating shaft is rotatably installed between the first placing plate and the second placing plate.

[0009] Furthermore, the driving member includes an electric push rod hinged on one end of the fixed plate away from the second placement plate, a first connecting rod fixedly connected to one end of the rotating shaft is rotatably installed on the side surface of the first placement plate away from the rotating shaft, a fixed rod is fixedly installed on one end of the first connecting rod, and the movable end of the electric push rod is rotatably sleeved on the surface of the fixed rod.

[0010] Furthermore, the clamping member includes a lower clamping plate fixedly mounted on an end of the support plate away from the first placing plate, a second connecting rod is rotatably mounted on a surface of the second placing plate facing the lower clamping plate, a mounting plate is rotatably mounted on the other end of the second connecting rod, an upper clamping plate is fixedly mounted on the lower surface of the mounting plate, the upper clamping plate and the lower clamping plate are opposite to each other, a third connecting rod fixedly connected to one end of the rotating shaft is rotatably mounted on a surface of the second placing plate facing the lower clamping plate, and the other end of the third connecting rod is rotatably connected to the surface of the mounting plate.

[0011] Furthermore, a connecting frame is fixedly installed at the mover end of the linear motor, and two ends of the connecting frame are respectively fixedly connected to the surfaces of opposite sides of the two fixing plates, and sliding parts are arranged under the two fixing plates.

[0012] Furthermore, the sliding member includes two sliding rods fixedly mounted on the surface of the opposite side of the fixed plate, the surfaces of the two sliding rods are slidably sleeved with sliding blocks, and the upper surfaces J of the two sliding blocks are fixedly connected to the upper surface of the fixed plate.

[0013] Compared with the prior art, the utility model provides a linear motor paper clamping and page dragging device for a web-fed flexographic printing machine, which has the following beneficial effects:

[0014] The linear motor paper clamping and page dragging device of the web-fed flexographic printing machine adopts a linear motor drive mode to replace the drive shaft, cam, crank arm and multi-link combination drive mode. Since the linear motor itself does not require daily oiling and maintenance, the staff does not need to carry out the oiling process for the linear motor, which reduces the workload of the operators. The linear motor comes with an accordion-type dust cover, which effectively reduces dust deposition, reduces wear and tear, and ensures transmission accuracy. By providing a paper clamping structure, the device is convenient for stably clamping printing materials such as paper or cardboard, thereby improving the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle;

[0018] In the figure: 1. base plate; 2. linear motor; 3. support frame; 4. fixing plate; 5. support plate; 6. first placement plate; 7. second placement plate; 8. rotating shaft; 9. sliding block; 10. electric push rod; 11. first connecting rod; 12. lower clamping plate; 13. second connecting rod; 14. mounting plate; 15. upper clamping plate; 16. third connecting rod; 17. connecting frame; 18. sliding rod. DETAILED DESCRIPTION

[0019] 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 in 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.

[0020] See also Figure 1 and Figure 2 The linear motor paper clamping and sheet dragging device of the web-fed flexographic printing machine in this embodiment includes two base plates 1, and linear motors 2 are fixedly installed on the upper surfaces of the two base plates 1. Support frames 3 are fixedly installed on the upper surfaces of the two base plates 1 and on both sides of the linear motors 2, and the tops of the support frames 3 are concave. Paper clamping structures for clamping and dragging printing materials are arranged above the two support frames 3.

[0021] Among them, a linear motor 2 is used to drive the linear motor 2 instead of the transmission shaft, cam, crank arm and multi-link combination drive. Since the linear motor 2 itself does not require daily oiling and maintenance, the staff does not need to perform the oiling process on the linear motor 2, which reduces the workload of the operator.

[0022] See also Figure 1 , Figure 2 and Figure 3 In this embodiment, the paper clamping structure includes a rotating member arranged on the upper surface of the support frame 3, one end of the rotating member is provided with a driving member that can drive the rotating member to rotate, and the other end of the rotating member is provided with a clamping member that can clamp the printed material.

[0023] Among them, the rotating part includes a concave fixing plate 4 arranged on the upper surface of the supporting frame 3, a supporting plate 5 is fixedly installed on the upper surface of the fixing plate 4, a first placing plate 6 is fixedly installed on the upper surface of the supporting plate 5, a second placing plate 7 is arranged above the other end of the supporting plate 5, and a rotating shaft 8 is rotatably installed between the first placing plate 6 and the second placing plate 7.

[0024] Secondly, the driving part includes an electric push rod 10 hinged on the end of the fixed plate 4 away from the second placement plate 7, and a first connecting rod 11 fixedly connected to one end of the rotating shaft 8 is rotatably installed on the side surface of the first placement plate 6 away from the rotating shaft 8. A fixed rod is fixedly installed at one end of the first connecting rod 11, and the movable end of the electric push rod 10 is rotatably sleeved on the surface of the fixed rod.

[0025] In addition, the clamping member includes a lower clamping plate 12 fixedly mounted on the end of the support plate 5 away from the first placement plate 6, a second connecting rod 13 is rotatably mounted on the surface of the second placement plate 7 facing the lower clamping plate 12, a mounting plate 14 is rotatably mounted on the other end of the second connecting rod 13, an upper clamping plate 15 is fixedly mounted on the lower surface of the mounting plate 14, the upper clamping plate 15 is opposite to the lower clamping plate 12, a third connecting rod 16 fixedly connected to one end of the rotating shaft 8 is rotatably mounted on the surface of the second placement plate 7 facing the lower clamping plate 12, and the other end of the third connecting rod 16 is rotatably connected to the surface of the mounting plate 14.

[0026] It should be noted that, by providing the second connecting rod 13 , it is convenient to support the mounting plate 14 , thereby enhancing the structural stability of the mounting plate 14 and the upper clamping plate 15 .

[0027] When the electric push rod 10 starts to run, the electric push rod 10 drives the first connecting rod 11 to rotate counterclockwise, and the first connecting rod 11 drives the rotating shaft 8 to rotate counterclockwise, and the rotating shaft 8 drives the third connecting rod 16 to rotate counterclockwise synchronously, so that the other end of the third connecting rod 16 moves downward, and then drives the mounting plate 14 to move downward, so that the mounting plate 14 drives the upper clamping plate 15 to move downward, so that the upper clamping plate 15 can cooperate with the lower clamping plate 12, so as to clamp printing materials such as paper or cardboard.

[0028] See also Figure 1 , Figure 2 and Figure 3 In this embodiment, a connecting frame 17 is fixedly installed at the mover end of the linear motor 2, and both ends of the connecting frame 17 are fixedly connected to the surfaces of opposite sides of the two fixed plates 4, and sliding members are provided under the two fixed plates 4.

[0029] Among them, the linear motor 2 comes with an accordion-type dust cover, which effectively reduces dust deposition, reduces wear and tear, and ensures transmission accuracy.

[0030] It should be noted that the linear motor 2 is mainly composed of two parts: a stator and a mover, wherein the stator is equivalent to the primary of the linear motor 2, and the mover is equivalent to the secondary of the linear motor 2. When the current is passed through the mover, the multiple sets of coils inside the mover generate strong magnetic lines of force, and the stator is originally a neodymium iron boron magnet with permanent magnetic force, and the positive and negative arranged permanent magnets will also generate strong magnetic lines of force. Due to the alternation of positive and negative poles, a traveling wave magnetic field is generated in the air gap between the mover and the stator. The traveling wave magnetic field and the action of the permanent magnet in the stator generate a driving force, thereby realizing the linear motion of the moving parts. The linear motor 2 is a prior art, and its specific structure and working principle are not repeated in this article.

[0031] Secondly, the sliding member includes two sliding rods 18 fixedly installed on the surface of the opposite side of the fixed plate 4. The surfaces of the two sliding rods 18 are slidably sleeved with sliding blocks 9. The upper surfaces J of the two sliding blocks 9 are fixedly connected to the upper surface of the fixed plate 4. Through the cooperation between the sliding rods 18 and the sliding blocks 9, the fixed plate 4 can be driven by the connecting frame 17 to perform a linear motion steadily.

[0032] The working principle of the above embodiment is: when it is necessary to clamp printing materials such as paper or cardboard, the electric push rod 10 starts to run, so that the electric push rod 10 drives the first connecting rod 11 to rotate counterclockwise, so that the first connecting rod 11 drives the rotating shaft 8 to rotate counterclockwise, so that the rotating shaft 8 drives the third connecting rod 16 to rotate counterclockwise synchronously, so that the other end of the third connecting rod 16 moves downward, and then drives the mounting plate 14 to move downward, so that the mounting plate 14 drives the upper clamping plate 15 to move downward, so that the upper clamping plate 15 can cooperate with the lower clamping plate 12, so as to clamp printing materials such as paper or cardboard. At this time, the linear motor 2 is started to operate, so that the linear motor 2 drives the fixing plate 4 to move linearly through the connecting frame 17, thereby driving the upper clamping plate 15 and the lower clamping plate 12 to move linearly, and then drives the printing material to move linearly, so as to transport the paper or cardboard to the specified position.

[0033] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0034] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear motor paper clamping and sheet dragging device for a web-fed flexographic printing machine, comprising two bottom plates (1), characterized in that: A linear motor (2) is fixedly mounted on the upper surfaces of the two base plates (1); a support frame (3) is fixedly mounted on the upper surfaces of the two base plates (1) and on both sides of the linear motor (2); and the top of the support frame (3) is concave; and a paper clamping structure for clamping and dragging printed materials is arranged above the two support frames (3); The paper clamping structure comprises a rotating member arranged on the upper surface of a support frame (3), one end of the rotating member is provided with a driving member capable of driving the rotating member to rotate, and the other end of the rotating member is provided with a clamping member capable of clamping printed materials.

2. The linear motor paper clamping and sheet dragging device for a web-fed flexographic printing press according to claim 1, characterized in that: The rotating member comprises a concave fixing plate (4) arranged on the upper surface of the supporting frame (3); a supporting plate (5) is fixedly mounted on the upper surface of the fixing plate (4); a first placing plate (6) is fixedly mounted on the upper surface of the supporting plate (5); a second placing plate (7) is arranged above the other end of the supporting plate (5); and a rotating shaft (8) is rotatably mounted between the first placing plate (6) and the second placing plate (7).

3. The linear motor paper clamping and sheet dragging device for a web-fed flexographic printing press according to claim 2, characterized in that: The driving member comprises an electric push rod (10) hinged on one end of the fixed plate (4) away from the second placement plate (7); a first connecting rod (11) fixedly connected to one end of the rotating shaft (8) is rotatably mounted on the surface of one side of the first placement plate (6) away from the rotating shaft (8); a fixed rod is fixedly mounted on one end of the first connecting rod (11); and a movable end of the electric push rod (10) is rotatably sleeved on the surface of the fixed rod.

4. The linear motor paper clamping and sheet dragging device for a web-fed flexographic printing press according to claim 1, characterized in that: The clamping member comprises a lower clamping plate (12) fixedly mounted on one end of the support plate (5) away from the first placement plate (6); a second connecting rod (13) is rotatably mounted on a surface of one side of the second placement plate (7) facing the lower clamping plate (12); a mounting plate (14) is rotatably mounted on the other end of the second connecting rod (13); an upper clamping plate (15) is fixedly mounted on the lower surface of the mounting plate (14); the upper clamping plate (15) and the lower clamping plate (12) are opposite; a third connecting rod (16) fixedly connected to one end of the rotating shaft (8) is rotatably mounted on a surface of one side of the second placement plate (7) facing the lower clamping plate (12); the other end of the third connecting rod (16) is rotatably connected to the surface of the mounting plate (14).

5. The linear motor paper clamping and sheet dragging device for a web-fed flexographic printing press according to claim 2, characterized in that: A connecting frame (17) is fixedly mounted on the mover end of the linear motor (2), and the two ends of the connecting frame (17) are respectively fixedly connected to the surfaces of opposite sides of the two fixing plates (4), and sliding parts are arranged below the two fixing plates (4).

6. The linear motor paper clamping and sheet dragging device of a web-fed flexographic printing press according to claim 5, characterized in that: The sliding member comprises two sliding rods (18) fixedly mounted on the surface of the opposite side of the fixed plate (4), the surfaces of the two sliding rods (18) are slidably sleeved with sliding blocks (9), and the upper surfaces J of the two sliding blocks (9) are fixedly connected to the upper surface of the fixed plate (4).

Images