Paper feeding device of offset press

Abstract

The utility model belongs to the technical field of offset presses, and particularly relates to an offset press paper feeding device which comprises a moving trolley, a telescopic cover arranged on the front side of the moving trolley, a baffle rotationally assembled on the right side of the moving trolley, a bearing plate slidably assembled in the moving trolley and controlled by a lifting screw, and a lifting motor installed in the moving trolley and used for controlling the lifting screw. A material pushing plate controlled by a feeding screw is assembled in the moving trolley in a sliding mode, a feeding motor for controlling the feeding screw is installed in the moving trolley, and a pressing plate controlled by two elastic telescopic rods is assembled on the upper side of the bearing plate in a sliding mode. Paper is placed on the upper side of a bearing plate, a pressing plate is pushed by an elastic telescopic rod to enable the paper to be aligned front and back, a lifting motor drives the bearing plate to ascend through a lifting screw rod, a feeding motor drives a pushing plate to move through a feeding screw rod, and therefore the paper is pushed to a designated place through a baffle, paper feeding is completed, use is convenient, and practicability is high. Manual back-and-forth carrying is not needed, and paper feeding can be carried out on multiple offset presses at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of offset printing machines, and particularly relates to a paper loading device for an offset printing machine. Background Art

[0002] An offset printing machine is a machine that uses the principle of indirect printing. Ink and water adhere to the printing surface wrapped around the outer circumference of the printing plate cylinder through an ink-water roller balancing system. The blanket cylinder meshes with the printing plate cylinder and rolls with a paper-like printing substrate sandwiched between them, transferring the graphics and texts on the required printing plate to printing substrates such as business cards, hanging tags, postcards, and various cards for printing. Currently, in factories, for the convenience of management and to avoid fires, the paper used by offset printing machines is usually stacked and managed in one place. The paper cards serving as printing substrates are stacked on a paper stacking table. The paper is placed on the paper feeding table by a paper feeding mechanism and conveyed to the printing area to be printed, and then rolled in by the cylinder for printing. When the current offset printing machine is in use, it is necessary to manually transport the paper to the printing area of the offset printing machine. Especially when transporting a large amount of paper, the labor intensity of manual work is high and the paper loading efficiency is low. Therefore, a paper loading device for an offset printing machine is needed to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a paper loading device for an offset printing machine. By placing the paper on the upper side of a bearing plate, the pressing plate aligns the paper front and back under the push of an elastic telescopic rod. The lifting motor drives the bearing plate to rise through a lifting screw rod, synchronously driving the paper to rise. The feeding motor drives a pushing plate to move through a feeding screw rod, thereby pushing the paper to a specified place through a baffle plate, thus completing the paper loading. It is convenient to use, does not require manual back-and-forth transportation, and can load paper for multiple offset printing machines simultaneously.

[0004] To achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0005] A paper loading device for an offset printing machine includes a mobile trolley. A paper inlet is opened at the front side of the mobile trolley, and a telescopic cover matching the paper inlet is provided at the front side of the mobile trolley. A paper loading port is opened at the right side of the mobile trolley, and a baffle plate matching the paper loading port is rotatably assembled at the right side of the mobile trolley. A bearing plate is slidably assembled inside the mobile trolley, a lifting screw rod matching the bearing plate is rotatably assembled inside the mobile trolley, a lifting motor is installed inside the mobile trolley, and the output shaft of the lifting motor is in transmission connection with the lifting screw rod. A pushing plate is slidably assembled inside the mobile trolley, a feeding screw rod matching the pushing plate is rotatably assembled at the upper side inside the mobile trolley, a feeding motor is installed inside the mobile trolley, and the output shaft of the feeding motor is in transmission connection with the feeding screw rod. Two pressing plates symmetrically distributed left and right are slidably assembled on the upper side of the bearing plate, and two elastic telescopic rods linearly distributed up and down are installed between each pressing plate and the inner wall of the mobile trolley.

[0006] A connecting plate is fixedly arranged between two elastic telescopic rods on the same side on the left and right. Vertical plates matching the connecting plate are fixedly arranged on both the left and right sides of the bearing plate. A number of springs distributed linearly are fixedly arranged between each vertical plate and the adjacent connecting plate. Guide grooves are formed in the inner walls on both the left and right sides of the moving trolley, and guide blocks matching the guide grooves are fixedly arranged on the side walls of the elastic telescopic rods located on the upper side.

[0007] Guide plates matching the pressing plate are fixedly arranged on both the left and right sides inside the moving trolley, and through grooves matching the guide plates are formed in the bearing plate.

[0008] An alignment plate is fixedly arranged on the upper side of the bearing plate, and the side wall of the alignment plate and the side wall of the upper paper inlet are in the same vertical plane.

[0009] The lower side wall of the pushing plate is higher than the lower side wall of the upper paper inlet.

[0010] In the present utility model, by placing the paper on the upper side of the bearing plate, the pressing plate is pushed by the elastic telescopic rod to align the paper front and back. The lifting motor drives the bearing plate to rise through the lifting screw rod, synchronously driving the paper to rise. The feeding motor drives the pushing plate to move through the feeding screw rod, so as to push the paper to a designated place through the baffle plate, thereby completing the paper feeding. It is convenient to use, does not require manual back-and-forth handling, and can feed paper to multiple offset printers at the same time. Description of the Drawings

[0011] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings.

[0012] Figure 1 is a schematic structural diagram of an embodiment of a paper feeding device for an offset printer of the present utility model;

[0013] Figure 2 is a schematic structural diagram of an embodiment of a paper feeding device for an offset printer of the present utility model without a telescopic cover and a baffle plate;

[0014] Figure 3 is a schematic cross-sectional structural diagram of an embodiment of a paper feeding device for an offset printer of the present utility model;

[0015] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0016] The main component symbols are explained as follows:

[0017] Moving trolley 1, telescopic cover 10, baffle 11, bearing plate 12, lifting screw 13, lifting motor 14, pushing plate 15, feeding screw 16, feeding motor 17, pressing plate 18, elastic telescopic rod 19, connecting plate 25, vertical plate 26, spring 27, guiding groove 28, guiding plate 30, aligning plate 35. Detailed implementation mode

[0018] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] As Figures 1-4 shown, a paper loading device for an offset printing machine of the present utility model includes a moving trolley 1. A paper inlet is provided on the front side of the moving trolley 1. A telescopic cover 10 matching the paper inlet is provided on the front side of the moving trolley 1. A paper loading port is provided on the right side of the moving trolley 1. A baffle 11 matching the paper loading port is rotatably assembled on the right side of the moving trolley 1. A bearing plate 12 is slidably assembled inside the moving trolley 1. A lifting screw 13 matching the bearing plate 12 is rotatably assembled inside the moving trolley 1. A lifting motor 14 is installed inside the moving trolley 1. The output shaft of the lifting motor 14 is in transmission connection with the lifting screw 13. A pushing plate 15 is slidably assembled inside the moving trolley 1. A feeding screw 16 matching the pushing plate 15 is rotatably assembled on the upper side inside the moving trolley 1. A feeding motor 17 is installed inside the moving trolley 1. The output shaft of the feeding motor 17 is in transmission connection with the feeding screw 16. Two pressing plates 18 symmetrically distributed left and right are slidably assembled on the upper side of the bearing plate 12. Two elastic telescopic rods 19 linearly distributed up and down are installed between each pressing plate 18 and the inner wall of the moving trolley 1;

[0020] A connecting plate 25 is fixedly arranged between the two elastic telescopic rods 19 on the same left and right side. Vertical plates 26 matching the connecting plate 25 are fixedly arranged on both the left and right sides of the bearing plate 12. A number of linearly distributed springs 27 are fixedly arranged between each vertical plate 26 and the adjacent connecting plate 25. Guiding grooves 28 are provided on the inner walls of both the left and right sides of the moving trolley 1. Guiding blocks matching the guiding grooves 28 are fixedly arranged on the side walls of the upper elastic telescopic rods 19;

[0021] During the use of the present utility model, when placing paper inside the mobile trolley 1, the user pushes the telescopic cover 10 downward to fold the telescopic cover 10, puts the paper through the paper inlet onto the upper side of the bearing plate 12, then pulls the telescopic cover upward to close it, pushes the mobile trolley 1 to move. After moving to the designated position, the lifting motor 14 is started, and the output shaft of the lifting motor 14 drives the lifting screw 13 to rotate, thereby driving the bearing plate 12 to rise. During the rising process of the bearing plate 12, the elastic action of the spring 27 pushes the elastic telescopic rod 19 to move along the guide groove 28 through the connecting plate 25, so that the pressing plate 18 presses and aligns the front and rear sides of the paper driven by the elastic telescopic rod 19. After the bearing plate 12 rises to the moving height, the lifting motor 14 stops running, and the feeding motor 17 starts running. The feeding motor 17 drives the feeding screw 16 to rotate, and the feeding screw 16 drives the pushing plate 15 to move. The pushing plate 15 pushes the paper to move, so that the paper moves through the baffle 11 to the printing area of the offset printing machine. There is no need for manual handling of the paper, and multiple sheets of paper required by the offset printing machine can be transported simultaneously, reducing the labor intensity of workers and improving the working efficiency of the user and the production efficiency of the offset printing machine;

[0022] Further, when the bearing plate 12 is located at the lower side inside the mobile trolley 1, under the guiding action of the guide groove 28, the pressing plate 18 is completely located on the left and right sides of the paper inlet, facilitating the user to place the paper;

[0023] In the present utility model, the paper is placed on the upper side of the bearing plate, and the pressing plate aligns the front and rear of the paper under the push of the elastic telescopic rod. The lifting motor drives the bearing plate to rise through the lifting screw, synchronously driving the paper to rise. The feeding motor drives the pushing plate to move through the feeding screw, thereby pushing the paper to the designated place through the baffle, thus completing paper feeding. It is convenient to use, without the need for manual back-and-forth handling, and can feed paper to multiple offset printing machines simultaneously.

[0024] Guide plates 30 matching the pressing plate 18 are fixedly arranged on the left and right sides inside the mobile trolley 1, and through grooves matching the guide plates 30 are formed on the bearing plate 12; when the bearing plate 12 is located at the lower side inside the mobile trolley 1, the pressing plate 18 is contracted under the action of the guide plate 30, facilitating the pressing and alignment of the paper.

[0025] An alignment plate 35 is fixedly arranged on the upper side of the bearing plate 12, and the side wall of the alignment plate 35 is in the same vertical plane as the side wall of the paper inlet; to prevent the paper from being knocked and stuck, ensuring normal paper feeding of the mobile trolley 1.

[0026] The lower side wall of the pushing plate 15 is higher than the lower side wall of the paper inlet; to ensure the normal use of the device.

[0027] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A paper loading device for an offset printing machine, comprising a mobile trolley, characterized in that: A paper feed port is provided on the front side of the moving trolley, a telescopic cover matching the paper feed port is provided on the front side of the moving trolley, an upper paper port is provided on the right side of the moving trolley, a baffle matching the upper paper port is rotatably equipped on the right side of the moving trolley, a carrying plate is slidably equipped inside the moving trolley, a lifting screw matching the carrying plate is rotatably equipped inside the moving trolley, a lifting motor is installed inside the moving trolley, the output shaft of the lifting motor is transmission connected with the lifting screw, a pushing plate is slidably equipped inside the moving trolley, a loading screw matching the pushing plate is rotatably equipped on the upper side of the moving trolley, a loading motor is installed inside the moving trolley, the output shaft of the loading motor is transmission connected with the loading screw, two pressing plates symmetrically distributed on the left and right are slidably equipped on the upper side of the loading plate, and two elastic telescopic rods linearly distributed up and down are installed between the pressing plate and the inner wall of the moving trolley.

2. The paper loading device of an offset printing machine according to claim 1, characterized in that: A connecting plate is fixed between the two elastic telescopic rods on the same left and right sides, vertical plates matching the connecting plate are fixed on the left and right sides of the load-bearing plate, a number of linearly distributed springs are fixed between the vertical plates and the adjacent connecting plates, guide grooves are opened on the left and right inner walls of the moving trolley, and guide blocks matching the guide grooves are fixed on the side walls of the elastic telescopic rods on the upper side.

3. The paper loading device of an offset printing machine according to claim 1, characterized in that: Guide plates matching the pressure plate are fixedly provided on the left and right sides of the interior of the moving trolley, and a through groove matching the guide plate is provided on the bearing plate.

4. The paper loading device of an offset printing machine according to claim 1, characterized in that: An alignment plate is fixedly provided on the upper side of the carrying plate, and a side wall of the alignment plate and a side wall of the upper paper outlet are in the same vertical plane.

5. The paper loading device of an offset printing machine according to claim 1, characterized in that: The lower side wall of the push plate is higher than the lower side wall of the upper paper opening.

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