Transmission structure for printing machine

Abstract

The utility model discloses a transmission structure for a printing machine, and relates to the technical field of transmission structures of printing machines. Comprising a transmission frame, a paper guide roller, a paper feeding roller, an electric push rod and an anti-pressing mechanism, according to the device, through the arrangement of a sliding cylinder, a sliding rod, an air storage cylinder and an arc-shaped plate, a plurality of rubber sleeves are movably and evenly pressed on paper, the buffering effect can be achieved when the paper is pressed, and the paper is prevented from deforming when being excessively pressed; meanwhile, through the rotation and extrusion effects of the rubber sleeve, the friction to the paper is reduced, on the basis that pressure is applied to the paper for pleat removal, rolling pressing of the paper is guaranteed, the paper is more smooth in the conveying process, and compared with an existing mode that the paper is excessively pressed through an arc pressing plate, the paper is evenly pressed in the mode, so that the paper conveying efficiency is improved. And it is guaranteed that the surface of the paper is completely conveyed into the printing machine for printing, the conveying effect of the transmission structure on the paper is guaranteed, and the problem that the paper is damaged in the conveying process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of the transmission structure of a printing machine, and particularly relates to a transmission structure for a printing machine. Background Technique

[0002] A printing machine, as a complex and precise mechanical device, is the core equipment in the modern printing industry. During the operation of the printing machine, the transmission structure on the printing machine is required to convey printing workpieces such as paper into the printing machine for printing. The main function of the transmission structure on the printing machine is to maintain a strict transmission ratio through each working mechanism and convey the paper to the printing part of the printing machine for printing.

[0003] The traditional transmission structure mainly includes a prime mover part, a transmission part, and a paper feeding part. When in use, the prime mover part drives the transmission part to act, and the transmission part drives the paper feeding part to act for paper feeding. However, the paper feeding part mainly transmits the paper through the rotation of the conveying rollers and does not have the function of adjusting the tightness of the paper during use, resulting in jerks during paper transmission, affecting the flatness of the paper and the printing efficiency. To solve the above problems, a high-efficiency transmission structure for a printing machine is disclosed in the utility model patent with the authorization announcement number CN219791817U. This structure drives the arc pressing plate to press the paper on the guide wheel through an electric push rod, so as to make the paper achieve a braking effect and prevent the paper from becoming fluffy, improving the practicability of the transmission structure of the printing machine; however, this transmission structure directly uses the moving push rod to push the arc pressing plate to press the paper on the guide wheel. Since its overall linkage structure is a rigid structure and does not have a buffering effect, it is easy to form excessive pressing on the paper during use. Moreover, since the paper is usually thin, it is easy to cause paper breakage, deformation, or creases on the surface due to excessive tension pressure during use, thereby affecting the transmission effect of the transmission structure on the paper.

[0004] Based on this, the present utility model proposes a transmission structure for a printing machine to solve the problems existing in the above-mentioned prior art. Content of the Utility Model

[0005] In view of this, the main purpose of the present utility model is to provide a transmission structure for a printing machine to solve the problem that the traditional transmission structure uses a rigid pressing structure, which is easy to over-press the paper, causing paper breakage, deformation, or creases on the surface, thereby affecting the transmission effect of the transmission structure on the paper.

[0006] To achieve the above purpose, the technical solution of the present utility model is realized as follows:

[0007] A transmission structure for a printing machine, comprising:

[0008] A transmission frame;

[0009] The paper guiding roller is rotatably arranged at the upper end inside the transmission frame;

[0010] The paper feeding roller is symmetrically and rotatably arranged inside and is connected to the servo motor;

[0011] The electric push rod is fixedly arranged at the upper end inside the transmission frame;

[0012] The anti - pressing mechanism is fixedly arranged at the upper end inside the transmission frame and is matched with both the paper guiding roller and the electric push rod.

[0013] In a preferred embodiment, the anti - pressing mechanism includes:

[0014] The arc - shaped plate is arranged above the paper guiding roller, and a pressing roller distributed in a ring shape is rotatably arranged inside the arc - shaped plate;

[0015] The connecting plate is arranged above the arc - shaped plate, is connected to the electric push rod, and sliding cylinders are arranged at both ends of the connecting plate;

[0016] The sliding rod is movably arranged in the sliding cylinder and is connected to the arc - shaped plate.

[0017] In a preferred embodiment, a rubber sleeve is further arranged on the surface of the pressing roller.

[0018] In a preferred embodiment, a first spring is arranged in the sliding cylinder, and the top end of the first spring is connected to the sliding rod.

[0019] In a preferred embodiment, an air storage cylinder is further arranged inside the transmission frame. The lower end of the air storage cylinder is communicated with a hose, the other end of the hose is communicated with the sliding cylinder, and a piston rod is also slidably connected inside the air storage cylinder.

[0020] In a preferred embodiment, an installation disk is arranged at the top end of the piston rod. An activity block is hinged inside the installation disk. A fixed frame is arranged on the electric push rod, and a magnifying glass is arranged on the transmission frame.

[0021] In a preferred embodiment, a color - showing ring is further arranged at the upper end of the installation disk, and the color - showing ring penetrates through and extends above the surface of the fixed frame.

[0022] In a preferred embodiment, a coil spring is arranged on the surface of the activity block, and the other end of the coil spring is connected to the installation disk.

[0023] In a preferred embodiment, a second spring is arranged inside the air storage cylinder, and the other end of the second spring is connected to the piston rod.

[0024] In a preferred embodiment, ring blocks are arranged at the lower ends of the inner walls of the sliding cylinder and the air storage cylinder.

[0025] Compared with the prior art, the utility model provides a transmission structure for a printing press, which has the following beneficial effects:

[0026] 1. Through the settings of the sliding cylinder, sliding rod, air storage cylinder and arc-shaped plate, it is realized that multiple rubber sleeves can move and evenly press on the surface of the paper on the guide roller, which can play a buffering role when pressing the paper, avoiding deformation of the paper when it is overly pressed; at the same time, through the rotation and extrusion of the rubber sleeve, through the pressure roller and the rubber sleeve, the friction on the paper is reduced. On the basis of ensuring the pressure on the paper to remove wrinkles, the rolling and pressing of the paper are also ensured, ensuring that the paper is more smoothly conveyed during transmission. Compared with the existing arc-shaped pressing plate that overly presses the paper, this method evenly presses on the paper, ensuring that the surface of the paper is completely conveyed into the printing press for printing, ensuring the conveying effect of the transmission structure on the paper, and avoiding damage to the paper during the transmission process;

[0027] 2. Through the settings of the movable block, fixed frame and magnifying glass, it is realized to clearly observe the appropriate upward movement distance of the piston rod, so as to conveniently instruct the staff to timely close the telescopic end of the electric push rod to move downward, ensuring that the rubber sleeve can evenly press on the paper; it solves the problem that the traditional transmission structure uses a rigid pressing structure, which is easy to overly press the paper, causing paper breakage, deformation or creases on the surface, thus affecting the transmission effect of the transmission structure on the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the transmission structure of the present utility model from the front view angle;

[0030] Figure 2 It is a schematic diagram of the overall structure of the transmission structure of the present utility model from the rear view angle;

[0031] Figure 3 It is an exploded view of the transmission structure of the present utility model;

[0032] Figure 4 It is a cross-sectional view of the anti-pressing mechanism of the present utility model;

[0033] Figure 5 It is a schematic diagram of the structure of the arc-shaped plate of the present utility model;

[0034] Figure 6 It is a schematic diagram of the structure of the anti-pressing mechanism of the present utility model;

[0035] Figure 7 For the present utility model Figure 6 is a partial enlarged view of part A in it.

[0036]

Description of Main Component Symbols

[0037] 1. Transmission frame; 2. Paper guiding roller; 3. Paper feeding roller; 4. Electric push rod; 5. Anti-pressing mechanism; 51. Arc-shaped plate; 52. Pressing roller; 53. Rubber sleeve; 54. Connecting plate; 55. Sliding cylinder; 56. Sliding rod; 57. Hose; 58. Air storage cylinder; 59. Piston rod; 510. First spring; 511. Second spring; 512. Mounting plate; 513. Movable block; 514. Fixed frame; 515. Display ring; 516. Torsion spring; 517. Magnifying glass; 518. Ring block; 6. Paper guiding board; 7. Paper limiting roller; 8. Adjusting roller. Specific Embodiment

[0038] The following further elaborates in detail on the structure of the transmission structure for a printing machine in conjunction with the accompanying drawings and embodiments of the present utility model.

[0039] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the accompanying drawings and embodiments.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0042] For ease of description, spatial relative terms may be used herein, such as "above", "over", "on the upper surface", "upper", etc., to describe the spatial positional relationship of a device or feature shown in the figures with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0043] As shown in the attached drawings of the specification Figures 1 - 7 the present utility model provides a technical solution:

[0044] A transmission structure for a printing press, comprising a transmission frame 1, a paper guiding roller 2, two paper feeding rollers 3, an electric push rod 4 and a pressure prevention mechanism 5 arranged on the transmission frame 1; wherein:

[0045] The paper guiding roller 2 is rotatably arranged at the upper end of the inner wall of the transmission frame 1 and is used for conducting paper during use;

[0046] The two paper feeding rollers 3 are rotatably installed on one side of the inner wall of the transmission frame 1 and are used for transmitting paper;

[0047] The electric push rod 4 is fixedly installed at the upper end of the inner wall of the transmission frame 1;

[0048] The pressure prevention mechanism 5 is installed at the upper end of the surface of the transmission frame 1 and includes a connecting plate 54 fixedly connected to the telescopic end of the electric push rod 4. Both the front and rear ends of the connecting plate 54 are fixedly connected with sliding cylinders 55. A sliding rod 56 is slidably connected in the sliding cylinder 55. The bottom end of the sliding rod 56 is fixedly connected with an arc-shaped plate 51. The inner side of the arc-shaped plate 51 is rotatably connected with a plurality of pressing rollers 52 distributed in a ring shape. A rubber sleeve 53 is fixedly connected to the surface of the pressing roller 52; and an air storage cylinder 58 is fixedly connected to the upper end of the inner wall of the transmission frame 1. The lower end of the surface of the air storage cylinder 58 is communicated with a hose 57. The other end of the hose 57 is communicated with the upper end of the surface of the sliding cylinder 55. A piston rod 59 is slidably connected in the inner wall of the air storage cylinder 58.

[0049] It should be noted that in this embodiment, two servo motors are fixedly connected to one side of the front end of the transmission frame 1, and the output shaft of the servo motor is fixedly connected to one end of the paper feeding roller 3. During use, the paper feeding roller 3 is driven to rotate through the driving action of the servo motor. Guide paper boards 6 are fixedly installed on both sides of the inner wall of the transmission frame 1 for conducting the paper during use. Limit paper rollers 7 are rotatably connected to both sides of the inner wall of the transmission frame 1 for limiting the paper during use. Two cylinders are fixedly connected to the inner wall of the transmission frame 1, the top end of the cylinder is fixedly connected with a moving block, and an adjusting roller 8 is rotatably connected to the inner wall of the moving block. A prestress is applied to the paper through the adjusting roller 8, so that the paper enters the printing machine in a flat form to avoid paper wrinkles. The upper end surface of the sliding rod 56 and the lower end surface of the piston rod 59 are both rubber components, and the upper end surface of the sliding rod 56 is closely attached to the inner wall of the sliding cylinder 55 to prevent the gas in the sliding cylinder 55 from leaking to the lower end surface of the sliding rod 56, and the lower end surface of the piston rod 59 is closely attached to the inner wall of the air storage cylinder 58 to prevent the gas in the air storage cylinder 58 from leaking to the upper end surface of the piston rod 59. During use, the transmission frame 1 is installed at a suitable position on the printing machine through bolts.

[0050] Specifically: When transferring the paper to the printing machine for printing, first lay the paper flat on one of the guide paper boards 6 and pass it through one of the limit paper rollers 7, then pass the paper through between the arc-shaped plate 51 and the guide paper roller 2, then through the adjusting roller 8, re-lay it on the other guide paper board 6 and the other limit paper roller 7 and pass through between the two paper feeding rollers 3. Manually turn on the two servo motors, and the rotation of the output shafts of the servo motors drives the guide paper rollers 2 to rotate. The rotation of the two guide paper rollers 2 drives the paper to be conveyed into the printing machine for printing operations. When the paper does not need to be transferred for printing, manually turn off the servo motors.

[0051] When the paper needs to be pressed, manually turn on the electric push rod 4. The telescopic end of the electric push rod 4 moves downward, driving the connecting plate 54, the sliding cylinder 55, the sliding rod 56, the arc-shaped plate 51, the pressing roller 52 and the rubber sleeve 53 to move downward, so that the rubber sleeve 53 presses down on the paper on the guide paper roller 2. At this time, the connecting plate 54 will drive the sliding cylinder 55 to continue to move downward, so that the sliding rod 56 pushes a part of the gas in the sliding cylinder 55 to be conveyed into the air storage cylinder 58 through the hose 57. When there is too much gas in the air storage cylinder 58, it pushes the piston rod 59 to move upward to a suitable position. Manually turn off the electric push rod 4, so that the telescopic end of the electric push rod 4 stops moving downward, and the rubber sleeve 53 presses the paper evenly, so that the surface of the paper is completely conveyed into the printing machine for printing.

[0052] As a preferred embodiment, such as Figure 4 、 Figure 6 and Figure 4As shown, a mounting disc 512 is fixedly connected to the top end of the piston rod 59, and two movable blocks 513 are hinged inside the mounting disc 512; a fixed frame 514 is fixedly connected to the upper end surface of the electric push rod 4, a magnifying glass 517 is fixedly connected to the upper end surface of the transmission frame 1, a color display ring 515 is fixedly connected to the upper end surface of the mounting disc 512, the surface of the color display ring 515 penetrates and extends out of the inner wall of the fixed frame 514, a coil spring 516 is fixedly connected to the surface of the movable block 513, and the other end of the coil spring 516 is fixedly connected to the inner wall of the mounting disc 512. Inert gases are filled in the inner walls of both the sliding cylinder 55 and the air storage cylinder 58, and the bottom end of the fixed frame 514 is bent into an arc shape. The surface of the color display ring 515 can be painted with a conspicuous color.

[0053] It should be noted that in this embodiment, when the piston rod 59 moves upward, it drives the mounting disc 512, the color display ring 515 and the movable block 513 to move upward. The movable block 513 moves upward and abuts against the fixed frame 514. The movable block 513 continues to move upward, causing the movable block 513 to tilt at an angle. Through the magnifying glass 517, the operator can clearly observe that the color display ring 515 passes through the inside of the fixed frame 514 and the movable block 513 tilts downward, so as to accurately display the pressing condition of the paper during the downward movement of the adjusting arc plate 51. At this time, the operator manually closes the electric push rod 4 to prevent the paper from being unable to pass through the gap between the arc plate 51 and the paper guide roller 2 or causing damage to the paper.

[0054] As a preferred embodiment, as Figure 5 shown, a first spring 510 is also fixedly connected to the inner bottom wall of the sliding cylinder 55, the top end of the first spring 510 is fixedly connected to the bottom end of the sliding rod 56, a second spring 511 is fixedly connected to the inner top wall of the air storage cylinder 58, the bottom end of the second spring 511 is fixedly connected to the top end of the piston rod 59, and ring blocks 518 are fixedly connected to the upper end of the inner wall of the sliding cylinder 55 and the lower end of the inner wall of the air storage cylinder 58.

[0055] It should be noted that in this embodiment, when the electric push rod 4 contracts and drives the rubber sleeve 53 away from the paper, at this time, the elastic force of the first spring 510 pulls the sliding rod 56 downward, and the elastic force of the second spring 511 pushes the piston rod 59 downward, so that the arc plate 51 can reduce the pressure on the paper while ensuring the guiding effect on the paper, so as to adjust the pressure of the arc plate 51 on the paper according to the printing requirements of papers with different thicknesses during use, thereby meeting the printing requirements of papers with different thicknesses.

[0056] When using the transmission structure of the present utility model to print and transmit paper, the process includes: manually turning on the electric push rod 4. The telescopic end of the electric push rod 4 moves downward, driving the connecting plate 54, the sliding cylinder 55, the sliding rod 56, the arc plate 51, the pressing roller 52 and the rubber sleeve 53 to move downward, so that the rubber sleeve 53 presses on the paper on the paper guiding roller 2. When the pressure is insufficient, at this time, the connecting plate 54 will drive the sliding cylinder 55 to continue to move downward, so that the sliding rod 56 pushes some gas in the sliding cylinder 55 to be transported into the air storage cylinder 58 through the hose 57 and stretches the first spring 510. When there is too much gas in the air storage cylinder 58, it pushes the piston rod 59 to move upward and squeezes the second spring 511. The upward movement of the piston rod 59 drives the mounting plate 512, the color display ring 515 and the movable block 513 to move upward. The upward movement of the movable block 513 abuts against the fixed frame 514. The movable block 513 continues to move upward, causing the movable block 513 to tilt at an angle. Through the magnifying glass 517, the operator can clearly observe that the color display ring 515 passes through the fixed frame 514 and the movable block 513 tilts downward. At this time, the operator manually turns off the electric push rod 4, so that the telescopic end of the electric push rod 4 stops moving downward, so that the rubber sleeve 53 presses the paper evenly, enabling the paper surface to be completely transported into the printing machine for printing, avoiding paper wrinkles, and ensuring the printing effect.

[0057] When printing with papers of different thicknesses, adjust the contraction of the electric push rod 4 according to the printing requirements and repeat the above process to complete the transmission function of the paper during the printing process.

[0058] It should be noted that in the present utility model, in the above description, the transmission frame 1, the paper guiding roller 2, the paper feeding roller 3, the magnifying glass 517, the electric push rod 4, the air cylinder and the servo motor, etc. are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the power supply of the electric push rod 4, the air cylinder and the servo motor can be powered by an internal power supply or by the mains power supply. The specific power supply method is selected according to the situation and will not be elaborated here.

[0059] The above is only a preferred embodiment of the present utility model and is not used to limit the protection scope of the present utility model.

Claims

1. A transmission structure for a printing press, characterized in that: Including: The transmission frame (1); The paper guiding roller (2), rotatably arranged at the upper end inside the transmission frame (1); The paper feeding roller (3), symmetrically rotatably arranged inside the transmission frame (1) and connected to the servo motor; The electric push rod (4), fixedly arranged at the upper end inside the transmission frame (1); The anti - pressing mechanism (5), fixedly arranged at the upper end inside the transmission frame (1) and matching with both the paper guiding roller (2) and the electric push rod (4).

2. A transmission structure for a printing machine according to claim 1, characterized in that: The anti - pressing mechanism (5) includes: The arc - shaped plate (51), arranged on the upper side of the paper guiding roller (2), and a pressing roller (52) distributed in a ring shape is rotatably arranged inside the arc - shaped plate (51); The connecting plate (54), arranged on the upper side of the arc - shaped plate (51), connected to the electric push rod (4), and sliding cylinders (55) are arranged at both ends of the connecting plate (54); The sliding rod (56), movably arranged inside the sliding cylinder (55) and connected to the arc - shaped plate (51).

3. The drive structure for a printing press according to claim 2, wherein: A rubber sleeve (53) is further arranged on the surface of the pressing roller (52).

4. The drive structure for a printing press according to claim 2, wherein: A first spring (510) is arranged inside the sliding cylinder (55), and the top end of the first spring (510) is connected to the sliding rod (56).

5. A transmission structure for a printing machine according to claim 2, characterized in that: An air storage cylinder (58) is further arranged inside the transmission frame (1), a hose (57) is connected to the lower end of the air storage cylinder (58), the other end of the hose (57) is connected to the sliding cylinder (55), and a piston rod (59) is slidably connected inside the air storage cylinder (58).

6. The drive structure for a printing press according to claim 5, characterized in that: An installation disc (512) is arranged at the top end of the piston rod (59), a movable block (513) is hinged inside the installation disc (512), a fixed frame (514) is arranged on the electric push rod (4), and a magnifying glass (517) is arranged on the transmission frame (1).

7. A transmission structure for a printing press according to claim 6, characterized in that: A color - showing ring (515) is further arranged at the upper end of the installation disc (512), and the color - showing ring (515) penetrates and extends above the surface of the fixed frame (514).

8. A transmission structure for a printing press according to claim 6, characterized in that: A coil spring (516) is arranged on the surface of the movable block (513), and the other end of the coil spring (516) is connected to the installation disc (512).

9. The drive structure for a printing press according to claim 5, wherein: A second spring (511) is arranged inside the air storage cylinder (58), and the other end of the second spring (511) is connected to the piston rod (59).

10. A transmission structure for a printing press according to claim 5, characterized in that: Circular blocks (518) are arranged at the lower ends of the inner walls of the sliding cylinder (55) and the air storage cylinder (58).

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