Paper placing structure of printing machine

Abstract

The utility model discloses a paper placing structure of a printing machine, which belongs to the technical field of printing equipment and comprises a base, a transverse guide rail and a longitudinal guide rail are mounted on the base, a front moving trolley and a rear moving trolley are arranged on the longitudinal guide rail, and a feeding trolley is mounted on the transverse guide rail. The feeding trolley can rapidly convey a paper disc to a designated position on the transverse guide rail and is matched with the hydraulic lifting column to rapidly adjust the height of the paper disc, the front moving trolley and the rear moving trolley can rapidly and oppositely move on the longitudinal guide rail to accurately position the paper disc, and the first clamping wheel disc and the second clamping wheel disc are matched to clamp the paper disc. The preparation time after the paper disc is replaced each time is greatly shortened, the non-working time of equipment is shortened, the overall working efficiency of the printing machine is improved, more printing tasks can be completed within the same time, and the energy utilization efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printing equipment technical field, especially a paper feeding structure of printing machine. BACKGROUND

[0002] Printing is the original draft such as text, picture, photo, anti -fake, makes ink transfer to the surface of the printing material through the process of making plate, applying ink, adding pressure, printing is the technology of batch copying original content, in the printing industry, the paper is continuously fed into the printing machine for printing in the process of printing by using the printing machine, wherein, the paper feeding structure of the printing machine plays a crucial role for the efficiency and energy consumption of the whole printing process. However, due to the large size and high weight of the paper tray, the paper tray needs to be replaced manually on the paper feeding structure during replacement, which is time-consuming and laborious, and the paper tray is prone to falling during replacement, causing safety accidents. UTILITARY MODEL

[0003] In order to overcome the defect that the paper tray is replaced time-consuming and laborious in the prior art, the utility model provides a paper feeding structure of printing machine.

[0004] The utility model discloses a paper feeding structure of printing machine, including the base, install two parallel horizontal guide rails and two parallel vertical guide rails on the base, two parallel horizontal guide rails are located two parallel vertical guide rails below and vertically set, two parallel vertical guide rails are equipped with front moving trolley and rear moving trolley symmetrically, be equipped with the front fixed frame on the front moving trolley, the front fixed frame is rotatably installed with the front pivot, the front end of front pivot is equipped with the driven wheel, the rear end of front pivot is equipped with the first clamping wheel disc, the front side of front fixed frame is installed with servo motor, the output of servo motor is equipped with the driving wheel, and the driving wheel is connected with the driven wheel through the belt, be equipped with the rear fixed frame on the rear moving trolley, the rear fixed frame is rotatably installed with the rear pivot, and the front end surface of rear pivot is equipped with the second clamping wheel disc that cooperates with the first clamping wheel disc, install the feeding trolley on the horizontal guide rail, be equipped with the support frame on the feeding trolley, and the bottom of support frame is fixed on the feeding trolley through a plurality of hydraulic lifting columns.

[0005] As a further improvement of the utility model, two parallel horizontal guide rails are located at the middle position of the front moving trolley and the rear moving trolley.

[0006] As a further improvement of the utility model, the front pivot and the rear pivot are installed on the front fixed frame and the rear fixed frame respectively through the bearing disc.

[0007] As a further improvement of the utility model, the support frame is provided with a groove.

[0008] As a further improvement of the utility model, the front fixed frame is provided with a guardrail, one end of the guardrail is rotatably connected to the front fixed frame through a hinge, and the other end of the guardrail is fixed to the rear fixed frame through a magnetic attraction structure.

[0009] As a further improvement of the utility model, the surfaces of the first clamping wheel disc and the second clamping wheel disc are provided with anti-skid rubber layers, and the surfaces of the anti-skid rubber layers are provided with a plurality of anti-skid protrusions.

[0010] As a further improvement of the utility model, position sensors are arranged on the relative positions of the front moving trolley and the rear moving trolley, and the position sensors are close to one side of the horizontal guide rail.

[0011] Compared with the prior art, the utility model has the beneficial effects that in the scheme, the feeding trolley can quickly send the paper tray to the designated position on the horizontal guide rail, the height of the paper tray is quickly adjusted in cooperation with the hydraulic lifting column, the front moving trolley and the rear moving trolley can quickly move towards each other on the longitudinal guide rail, the paper tray is accurately positioned, the first clamping wheel disc and the second clamping wheel disc clamp the paper tray, the preparation time after the paper tray is replaced each time is greatly shortened, the non-working time of the equipment is reduced, the working efficiency of the whole printing machine is improved, more printing tasks can be completed in the same time, and the energy utilization efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described below in combination with the drawings and specific embodiments.

[0013] Figure 1 It is a structure schematic view of the paper placing structure of the printing machine of the utility model.

[0014] Figure 2 It is a structure schematic view of the clamping wheel disc of the utility model.

[0015] Figure 3 It is a structure schematic view of the support frame of the utility model.

[0016] In the drawing: 1, horizontal guide rail; 2, longitudinal guide rail; 3, base; 4, front moving trolley; 5, rear moving trolley; 6, front fixed frame; 7, rear fixed frame; 8, front rotating shaft; 9, driven wheel; 10, first clamping wheel disc; 11, servo motor; 12, driving wheel; 13, belt; 14, rear rotating shaft; 15, second clamping wheel disc; 16, bearing disc; 17, feeding trolley; 18, support frame; 19, hydraulic lifting column; 20, recess; 21, guardrail. DETAILED DESCRIPTION

[0017] In order to make the technical scheme and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments.

[0018] With reference to Figure 1 The utility model discloses a kind of paper placing structures of printing machine, including base 3, two parallelly arranged horizontal guide rails 1 and two parallelly arranged longitudinal guide rails 2 are installed on base 3, two parallelly arranged horizontal guide rails 1 are located just below two parallelly arranged longitudinal guide rails 2 and are vertically arranged, two parallelly arranged longitudinal guide rails 2 are symmetrically provided with front moving trolley 4 and rear moving trolley 5, two parallelly arranged horizontal guide rails 1 are located in the middle position of front moving trolley 4 and rear moving trolley 5.

[0019] With reference to Figure 2 First clamping wheel disc 10 and second clamping wheel disc 15 are the same structure and symmetrically arranged, and the surfaces of first clamping wheel disc 10 and second clamping wheel disc 15 are provided with anti-skid rubber layers, and the surfaces of the anti-skid rubber layers are provided with a plurality of anti-skid protrusions. The anti-skid rubber layers on the surfaces of first clamping wheel disc 10 and second clamping wheel disc 15 are closely attached to the edges of the paper tray. Since the anti-skid rubber layers have certain elasticity and flexibility, they can better adapt to the shape of the edges of the paper tray, increasing the contact area. The plurality of anti-skid protrusions on the surfaces of the anti-skid rubber layers further increase the friction between the anti-skid rubber layers and the paper tray, effectively preventing the paper tray from slipping during rotation.

[0020] Put the base 3 in the appropriate working position and make sure it is stable. Install two parallel horizontal rails 1 and two parallel longitudinal rails 2 on the base 3, with the horizontal rails 1 directly below the longitudinal rails 2 and perpendicular to each other. Install the front moving trolley 4 and the rear moving trolley 5 on the two parallel longitudinal rails 2 respectively, and make sure they can move smoothly on the longitudinal rails 2. Install the front fixed frame 6 on the front moving trolley 4, and install the front rotating shaft 8 on the front fixed frame 6 through the rotating part, which is the bearing disc 16, so that the front rotating shaft 8 can rotate flexibly. Install the driven wheel 9 on the front end of the front rotating shaft 8 and the first clamping wheel disc 10 on the rear end. Install the servo motor 11 on the front side of the front fixed frame 6, and connect and fix the output end of the servo motor 11 with the driving wheel 12. Connect the driving wheel 12 and the driven wheel 9 with the belt 13, adjust the tightness of the belt 13, and make sure the power can be transmitted effectively. Install the rear fixed frame 7 on the rear moving trolley 5, and install the rear rotating shaft 14 on the rear fixed frame 7 through the rotating part, which is the bearing disc 16. Install the second clamping wheel disc 15 on the front end face of the rear rotating shaft 14, and make sure the second clamping wheel disc 15 can accurately cooperate with the first clamping wheel disc 10. Install the feeding trolley 17 on the horizontal rails 1, so that it can move on the horizontal rails 1. Install the support frame 18 on the feeding trolley 17, and fix the bottom of the support frame 18 on the feeding trolley 17 through several hydraulic lifting columns 19, and make sure the hydraulic lifting columns 19 can work normally to realize the lifting function of the support frame 18.

[0021] Put the paper tray to be printed on the support frame 18 of the feeding trolley 17, adjust the height of the support frame 18 through the hydraulic lifting columns 19, so that the paper tray is in the appropriate paper placing position. Move the feeding trolley 17 to send the paper tray to the middle area between the front fixed frame 6 and the rear fixed frame 7. The front moving trolley 4 and the rear moving trolley 5 can move towards each other on the longitudinal rails 2, so that the first clamping wheel disc 10 and the second clamping wheel disc 15 clamp the paper tray. Then the hydraulic lifting columns 19 are lowered, so that the paper tray is separated from the support frame 18. Start the servo motor 11, which drives the driving wheel 12 to rotate. The driving wheel 12 drives the driven wheel 9 to rotate through the belt 13, and the driven wheel 9 drives the front rotating shaft 8 to rotate, and the first clamping wheel disc 10 on the front rotating shaft 8 also rotates. At the same time, the second clamping wheel disc 15 on the rear rotating shaft 14 cooperates with the first clamping wheel disc 10. With the rotation of the first clamping wheel disc 10 and the second clamping wheel disc 15, the paper is continuously conveyed into the printing machine for printing, realizing the continuous paper feeding function of the printing machine.

[0022] Referring to Figure 3 , the support frame 18 is provided with a groove 20. The operator aligns the paper tray with the groove 20 on the support frame 18 through hoisting tools, and the paper tray can be tightly embedded in the groove. During the movement of the feeding trolley 17, the groove 20 plays a restraining role on the paper tray, limiting its displacement in the horizontal direction.

[0023] The front fixed frame 6 is provided with a guardrail 21, one end of which is rotatably connected to the front fixed frame 6 through a hinge, and the other end of which is fixed to the rear fixed frame 7 through a magnetic attraction structure. When the equipment is ready to run, the end of the guardrail 21 is opened by rotating the hinge, which facilitates the operator to place the paper tray in the appropriate position. After the placement is completed, the other end of the guardrail 21 is aligned with the rear fixed frame 7 by rotating the guardrail 21, and then is adsorbed on the rear fixed frame 7 through the magnetic attraction structure. During the operation of the printing machine, the paper is transported between the first clamping wheel disc 10 and the second clamping wheel disc 15, and the guardrail 21 surrounds the paper conveying path to form a relatively closed space, preventing the paper from deviating or falling out accidentally during the conveying process. When it is necessary to replace the paper tray or maintain the equipment, the guardrail 21 is rotated to be separated from the rear fixed frame 7, and is opened by rotating around the hinge, so that the operator can smoothly access the internal components of the equipment.

[0024] The relative positions of the front moving trolley 4 and the rear moving trolley 5 are both provided with position sensors, which are close to the side of the transverse guide rail 1. When the trolley moves to a specific position, such as a position that is about to reach the position where the first clamping wheel disc 10 and the second clamping wheel disc 15 can accurately clamp the paper tray, the position sensor will sense the change in the relative position with the surrounding environment, such as specific marks on the guide rail or other sensing elements. This sensing is based on the principles of electromagnetic induction, photoelectric sensing, etc., which converts the position information into an electrical signal and transmits it to the control system of the equipment. After receiving the signal, the control system will accurately control the moving speed and stopping position of the trolley according to the preset program, to ensure that the trolley can accurately stop at the predetermined position, complete the clamping preparation work of the paper tray, and avoid the problems of unstable paper conveying or printing quality caused by deviation of the clamping position.

[0025] It should be understood that the specific embodiments described herein are only for the purpose of understanding the present application and do not limit the present application. All other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

Claims

1. A sheet feeding structure of a printing machine comprising a base (3), characterized in that: The base (3) is provided with two parallel transverse guide rails (1) and two parallel longitudinal guide rails (2), the two parallel transverse guide rails (1) are vertically arranged below the two parallel longitudinal guide rails (2), the two parallel longitudinal guide rails (2) are symmetrically provided with a front moving trolley (4) and a rear moving trolley (5), the front moving trolley (4) is provided with a front fixed frame (6), the front fixed frame (6) is rotatably provided with a front rotating shaft (8), the front end of the front rotating shaft (8) is provided with a driven wheel (9), the rear end of the front rotating shaft (8) is provided with a first clamping wheel disc (10), the front side of the front fixed frame (6) is provided with a servo motor (11), the output end of the servo motor (11) is provided with a driving wheel (12), the driving wheel (12) is connected with the driven wheel (9) through a belt (13), the rear moving trolley (5) is provided with a rear fixed frame (7), the rear fixed frame (7) is rotatably provided with a rear rotating shaft (14), the front end face of the rear rotating shaft (14) is provided with a second clamping wheel disc (15) matched with the first clamping wheel disc (10), the transverse guide rail (1) is provided with a feeding trolley (17), the feeding trolley (17) is provided with a support frame (18), the bottom of the support frame (18) is fixed on the feeding trolley (17) through a plurality of hydraulic lifting columns (19).

2. The paper feeding structure of a printing machine according to claim 1, characterized in that: The two parallel transverse guide rails (1) are located at the middle positions of the front moving trolley (4) and the rear moving trolley (5).

3. The paper feed structure of a printing machine according to claim 2, wherein: The front rotating shaft (8) and the rear rotating shaft (14) are respectively arranged on the front fixed frame (6) and the rear fixed frame (7) through bearing discs (16).

4. The paper feed structure of a printing machine according to claim 3, wherein: The support frame (18) is provided with a groove (20).

5. A paper feed structure of a printing machine according to claim 4, characterized in that: The front fixed frame (6) is provided with a guardrail (21), one end of the guardrail (21) is rotatably connected to the front fixed frame (6) through a hinge, the other end of the guardrail (21) is fixed to the rear fixed frame (7) through a magnetic attraction structure.

6. A paper feed structure of a printing machine according to claim 5, characterized in that: The surfaces of the first clamping wheel disc (10) and the second clamping wheel disc (15) are provided with anti-skid rubber layers, and the surfaces of the anti-skid rubber layers are provided with a plurality of anti-skid protrusions.

7. The paper feed structure of a printing machine according to claim 6, wherein: The relative positions of the front moving trolley (4) and the rear moving trolley (5) are provided with position sensors, and the position sensors are close to the transverse guide rails (1).

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