Printing machine feeding device

Abstract

The utility model discloses a printing machine feeding device which comprises a machine frame, a plurality of feeding rollers are arranged on the machine frame, a paper supporting frame and a paper blocking plate are arranged on the upper sides of the feeding rollers on the machine frame, and a plurality of paper supporting pieces and a driving mechanism for driving the paper supporting pieces to move up and down are arranged between the feeding rollers on the machine frame. The paper supporting piece is arranged between the feeding rollers, after a bottom-layer paper board is sent out, the paper supporting piece can support a paper board adjacent to the upper side of the bottom-layer paper board, friction of the paper board on the upper side due to rotation of the feeding rollers is avoided, abrasion of the bottom face of the paper board is avoided, and the finished product quality of a carton is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a feeding device for a printing machine. Background Art

[0002] Traditional corrugated cartons are the most widely used packaging products. Due to their good physical and mechanical properties, decoration and printing adaptability, economic practicality and environmental protection, their consumption has always been the first among various packaging products. From the perspective of printing, the feeding methods of existing printing machines are divided into manual feeding and feeding on a conveyor belt. Manual feeding is to manually insert straight boards into the feeding port of the printing machine one by one, which consumes little space but has low feeding efficiency. Feeding on a conveyor belt is to continuously feed straight boards through a conveyor belt, which has high feeding efficiency but occupies a large space and is complex in structure and difficult to maintain. The utility model patent with the publication number CN217263504U discloses a feeding device for a water-based ink printing machine. The cardboard is stacked on the feeding roller, and then the upper cardboard is blocked by a limiting plate, so that the bottom cardboard can be sent out one by one, thereby realizing automatic and rapid cardboard feeding for the printing machine. However, during the process of sending out the bottom cardboard, the rear part of the cardboard adjacent to the upper side of the bottom cardboard will also droop onto the rotating feeding roller, and the upper cardboard is blocked by the limiting plate. Only after the bottom cardboard is completely sent out, the next cardboard will follow the rotation of the feeding roller and be sent out. During this period, the feeding roller will continuously rub against the bottom surface of the rear part of the upper cardboard. The surface roughness of the feeding roller is relatively high, which is easy to wear the bottom surface of the cardboard, thus affecting the finished product quality of the carton. Content of the Utility Model

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a feeding device for a printing machine, thereby effectively solving the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a feeding device for a printing machine, including a frame, on which a plurality of feeding rollers are arranged. A paper supporting frame and a cardboard blocking plate are arranged above the feeding rollers on the frame, and a plurality of paper supporting members and a driving mechanism for driving the paper supporting members to move up and down are arranged between the feeding rollers on the frame.

[0005] Further, the paper supporting member is a roller.

[0006] Further, two paper supporting members are arranged on the frame, and the driving mechanism includes a first driving device arranged on the frame and a second driving device arranged on the paper supporting frame.

[0007] Further, an adjusting mechanism for driving the paper supporting frame to move back and forth is provided on the frame. A slide rail is arranged on the frame in cooperation with the paper supporting frame. Side plates are arranged on both sides of the paper supporting frame, and support plates extending towards the bottom of the frame are arranged on the side plates. The second driving device is arranged on the support plate, and the second driving device is arranged on the front side of the paper supporting frame. The height of the second driving device is lower than the height of the feeding roller.

[0008] Further, the adjusting mechanism includes a screw rod and a third driving device for driving the screw rod to rotate. The paper supporting frame is screwed on the screw rod.

[0009] Further, a pushing plate and a fourth driving device for driving the pushing plate to move back and forth are arranged on the paper supporting frame.

[0010] The above technical solution of the present utility model has the following beneficial effects: A paper supporting member is arranged between the feeding rollers in the present utility model. After the bottom cardboard is sent out, the paper supporting member can support the cardboard adjacent to the upper side of the bottom cardboard, avoiding friction between the upper cardboard and the rotating feeding rollers, preventing wear on the bottom surface of the cardboard, and ensuring the finished product quality of the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a side schematic view of an embodiment of the present utility model;

[0012] Figure 2 is a cross-sectional schematic view of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following describes the preferred embodiments of the present utility model in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0014] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0015] As shown Figure 1-2 In the figure, a paper feeding device of a printing press according to this embodiment includes a frame 1. A plurality of paper feeding rollers 2 are arranged on the frame 1. The paper feeding rollers 2 are driven to rotate by a motor (which is a mature prior art and thus not shown in the figure). A paper support 3 and a paper stop 4 are arranged on the frame 1 above the paper feeding rollers 2. A plurality of paper supporting members 5 and a driving mechanism for driving the paper supporting members 5 to move up and down are arranged between the paper feeding rollers 2 on the frame 1. The paper supporting members 5 are arranged between the paper support 3 and the paper stop 4. Cardboards are stacked between the paper support 3 and the paper stop 4, and then the paper feeding rollers 2 drive the bottom cardboard to be sent out. After the cardboard moves outwards, the driving mechanism drives the paper supporting members 5 to move upwards to support the rear side of the upper cardboard, avoiding the upper cardboard from dropping and contacting the rotating paper feeding rollers 2, preventing the bottom surface of the cardboard from being worn, and ensuring the quality of the finished carton. When the next paper feeding is required, the driving mechanism drives the paper supporting members 5 to move downwards. After the cardboard contacts the paper feeding rollers 2, the feeding of the next cardboard can be carried out;

[0016] Preferably, the paper supporting member 5 is a roller. When the paper supporting member 5 moves the cardboard downwards to contact the paper feeding rollers 2, the paper feeding rollers 2 will drive the cardboard to move. At this time, the roller will roll briefly at the bottom of the cardboard, which can avoid sliding friction and abrasion of the cardboard;

[0017] Preferably, two paper supporting members 5 are arranged on the frame 1. The driving mechanism includes a first driving device 6 arranged on the frame 1 and a second driving device 7 arranged on the paper support 3. Both the first driving device 6 and the second driving device 7 are cylinders. The two cylinders respectively drive the two paper supporting members 5 to move up and down, which can support both sides of the bottom of the cardboard stack, so as to lift the cardboard and make the cardboard not contact the paper feeding rollers 2;

[0018] Preferably, an adjusting mechanism for driving the paper support 3 to move back and forth is arranged on the frame 1. A slide rail 8 is arranged on the frame 1 to cooperate with the paper support 3. Side plates 9 are arranged on both sides of the paper support 3. A support plate 10 extending towards the bottom of the frame 1 is arranged on the side plates 9. The second driving device 7 is arranged on the support plate 10. The second driving device 7 is arranged on the front side of the paper support 3, and the height of the second driving device 7 is lower than the height of the paper feeding rollers 2. The adjusting mechanism 7 adjusts the front and back positions of the paper support 3 to adapt to paperboards of different widths for feeding. When the position of the paper support 3 is adjusted, the second driving device 7 drives the paper supporting member 5 to move downwards so that the paper supporting member 5 is lower than the paper feeding rollers 2. Then, the second driving device 7 and the paper supporting member 5 can move along with the paper support 3, so as to support and hold the paperboard of different widths for operation;

[0019] Preferably, the adjusting mechanism 7 includes a screw rod 71 and a third driving device 72 for driving the screw rod 71 to rotate. The paper support 3 is screwed on the screw rod 71. The third driving device 72 is a motor. The motor drives the screw rod 71 to rotate, which can drive the paper support 3 to move along the slide rail 8;

[0020] Preferably, a push plate 11 and a fourth driving device 12 for driving the push plate 11 to move back and forth are provided on the paper support 3. The fourth driving device 12 is a cylinder. Workers can stack cardboard on the paper support 3, and then the fourth driving device 12 drives the push plate 11 to move forward to push the stack of cardboard between the paper support 3 and the baffle 4 (when pushing the paper, the height of the cardboard between the paper support 3 and the baffle 4 is slightly lower than the height of the paper support 3).

[0021] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present invention and its practical application, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A feeding device for a printing press, characterized in that: It includes a frame, on which several feeding rollers are arranged. A paper supporting frame and a paper blocking board are arranged on the frame above the feeding rollers. Several paper supporting members and a driving mechanism for driving the paper supporting members to move up and down are arranged between the feeding rollers on the frame.

2. The feeding device of a printing press according to claim 1, wherein: The paper supporting member is a roller.

3. A feeding device for a printing press according to claim 1, characterized in that: Two paper supporting members are arranged on the frame. The driving mechanism includes a first driving device arranged on the frame and a second driving device arranged on the paper supporting frame.

4. A feeding device for a printing press according to claim 3, characterized in that: An adjusting mechanism for driving the paper supporting frame to move back and forth is arranged on the frame. A slide rail is arranged on the frame to cooperate with the paper supporting frame. Side plates are arranged on both sides of the paper supporting frame. Support plates extending towards the bottom of the frame are arranged on the side plates. The second driving device is arranged on the support plate. The second driving device is arranged on the front side of the paper supporting frame, and the height of the second driving device is lower than the height of the feeding rollers.

5. The feeding device of a printing machine according to claim 4, characterized in that: The adjusting mechanism includes a screw rod and a third driving device for driving the screw rod to rotate. The paper supporting frame is screwed on the screw rod.

6. The feeding device of a printing machine according to claim 1, wherein: A push plate and a fourth driving device for driving the push plate to move back and forth are arranged on the paper supporting frame.

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