CN101596982B - Paper pile lifting device of paper feed machine - Google Patents

Abstract

The invention provides a paper pile lifting device of a paper feed machine, belonging to the machinery technical field. The invention solves the problem that the paper pile lifting device of the existing paper feed machine has low operating efficiency so that the working strength of workers is large. The paper pile lifting device of the paper feed machine comprises a body frame and a paper-piling table used for piling paper, a main chain is arranged on the body frame, one end of the main chain is connected with the paper-piling table, the other end thereof is provided with a main driving mechanism which can roll and release the main chain and is arranged on the body frame, when the main driving mechanism rolls and releases the main chain, the paper-piling table is vertically lifted, an auxiliary lifting device is arranged above the paper-piling table, when the bottom surface of the paper pile is higher than the auxiliary lifting device, the auxiliary lifting device can support the paper pile, and the auxiliary lifting device is connected with an auxiliary driving mechanism arranged on the body frame and can separate the paper pile from the paper-piling table and continue to lift the paper pile. The paper pile lifting device of the paper feed machine has the advantages that the pile lifting device is suitable for high-speed transmission, can improve the working efficiency and has stable performance.

Description

Paper feeder pile lifter

technical field

The invention belongs to the technical field of machinery, and relates to a paper feeder, in particular to a paper pile lifting device for a paper feeder.

Background technique

The paper feeding mechanism of the sheet-fed printing machine is a very important auxiliary machinery in the offset printing machine. Its main component - the separation head, through a series of suction nozzles and blowing nozzles, sucks up the paper from the paper pile, separates, Pass it on to the printing department. The paper feeder is also widely used in sheet-fed printing machinery and equipment such as screen printing machines, gravure printing machines, automatic die-cutting machines, and laminating machines.

According to different requirements, the paper feeder can be divided into the following two types according to the requirements of precision and speed: 1. Intermittent paper feeder: After the separation head sends a piece of paper into the printing department, it then sends the second piece of paper, and it goes back and forth in sequence. For low speed printing machinery. 2. Stream-type paper feeder: the separation head continuously feeds paper, and the paper is lapped on the paper feeder to realize fast paper feeding. It is mainly used for high-speed printing machinery, and currently it is mainly used for sheet-fed multi-color printing machines.

The working principle of the movement in the paper feeder is: 1. The paper separating nozzle moves downward, after sucking the top sheet of paper, it lifts up and tilts back, so as to prevent double sheets from being sucked up, and is conducive to the pressure of the paper blowing nozzle. insert. 2. Insert the paper pressing nozzle, press the paper below and open the blowing air path to blow the air, so that the sucked paper is separated from the paper below, and the height of the paper pile is detected at the same time. 3. The paper delivery nozzle sucks the paper and moves to the right. At this time, the paper separation nozzle and the paper delivery nozzle control the paper at the same time, and the paper is handed over, that is, the paper separation nozzle is handed over to the paper delivery nozzle. 4. The paper separation nozzle cuts off the air path to release the paper, completes the paper transfer, and then rises up. At this time, the paper pressure nozzle stops blowing air and leaves the paper pile, and the paper delivery nozzle moves to the left to output the paper. 5. With the continuous output of paper, the paper pile monitoring system of the paper feeder will raise the height of the paper pile at any time to ensure uninterrupted paper feeding.

With the advancement of science and technology, the printing speed of the printing machine is constantly increasing, which requires the conveying speed of the paper feeder to be increased. Although the current paper feeder has realized the uninterrupted high-speed conveying of a single pile of paper, it still has a relatively large defect: due to the limited height and high-speed conveying of a single pile of paper, the pile of paper cannot be transported in a short period of time. will be printed. In order to print a new pile of paper, it is necessary to lower the pile table of the paper feeder to the lowest position, and then place the new pile of paper on the pile table. In actual use, it is found that the time required to place a new pile of paper is close to this The time it takes for the stack of paper to be fed to completion. Thereby it can be seen that the work efficiency of this equipment is extremely low, and carrying a new pile of paper also increases the work intensity of laborers.

Contents of the invention

The object of the present invention is to solve the above-mentioned problems in the existing technology, and propose a paper pile lifting device for a paper feeder that can always keep paper to be conveyed on the pile table without stopping the work of the paper feeder.

The purpose of the present invention can be achieved through the following technical solutions: a paper pile lifting device for a paper feeder, including a frame and a stacker for placing the pile of paper, the frame is provided with a main chain, and one end of the main chain is connected to the The pilers are connected, and the other end is provided with a main drive mechanism that can unwind the main chain and is fixed on the frame. When the main drive mechanism winds up the main chain, the piler is lifted vertically. It is characterized in that the piler There is an auxiliary lifting mechanism on the top. When the bottom surface of the paper pile is higher than the auxiliary lifting mechanism, the auxiliary lifting mechanism can hold the above-mentioned paper pile. The auxiliary lifting mechanism is connected with the auxiliary driving mechanism fixed on the frame and can make the paper The stack breaks away from the stacker and continues to lift.

This device enables the paper feeder to complete adding paper to the pile table without stopping the paper delivery. The realization process is as follows: 1. Place a pile of paper on the paper pile table, run the paper feeder, and the paper is continuously output , The paper pile monitoring system of the paper feeder controls the main drive mechanism to lift the pile table at any time, and always ensures that the paper pile can be transported without interruption. 2. When the stacking table is raised to about three quarters of the height from the ground to the output port, the remaining paper piles are supported by the auxiliary lifting mechanism, and the auxiliary driving mechanism lifts the auxiliary lifting mechanism at any time, so as to ensure that the remaining paper can still be uninterrupted. At this time, the main drive mechanism drives the stacker to make the stacker return to the lowest position. 3. Place a new pile of paper on the stacking table, and the height of the stack should not exceed three-quarters of the height from the ground to the output port. Lift the stacking table so that the top surface of the new paper pile overlaps the bottom surface of the original paper pile Close, at this time the auxiliary lifting mechanism stops lifting, the main drive mechanism lifts the paper pile on the stacking table, and the auxiliary lifting mechanism drops to the initial position at the same time. After completing steps 1-3, steps 2 and 3 need to be cycled sequentially, so as to realize that the paper feeder can always keep paper to be conveyed on the paper feeder while maintaining high-speed paper feeding.

In the paper pile lifting device of the paper feeder described above, the auxiliary lifting mechanism includes cross bars located on both sides above the stacker and support bars erected on the cross bars for supporting the paper stack. There is an auxiliary chain, one end of the auxiliary chain is connected with the cross bar, and the other end is connected with the above-mentioned auxiliary driving mechanism. uplift.

The sub-lifting mechanism is controlled by the sub-driving mechanism to lift the remaining paper piles and separate the paper piles from the stacking platform and continue to lift upwards. The crossbars in the auxiliary lifting mechanism are located on the front and rear sides above the stacking table, and the number of crossbars on both sides is one and located on the same plane. paper.

In the paper pile lifting device of the paper feeder described above, a bottom plate is provided on the paper pile table, and a plurality of grooves are arranged on the upper surface of the bottom plate, and the support rods mentioned above can pass through the grooves. The grooves are evenly distributed on the upper surface of the bottom plate. The grooves are perpendicular to the cross bar and run through the upper surface of the bottom plate. The support rod can pass through the groove or be embedded in the groove. Under the action, it can be separated from the groove of the bottom plate.

In the paper stack lifting device of the paper feeder, when the upper end surface of the bottom plate is higher than the cross bar, the support bar passes through the groove on the bottom plate and is erected on the cross bar. When the upper end surface of the bottom plate and the groove are higher than the cross bar, the supporting rod penetrates the groove from the front side of the stacker and passes out from the rear side at this time, and the two ends of the supporting rod are respectively erected on the horizontal side of the front and rear sides of the stacker. on the lever, thereby holding the stack of paper.

In the paper pile lifting device of the paper feeder described above, a support bar is provided in the groove on the bottom plate, and when the upper end surface of the bottom plate is higher than the cross bar, the cross bar is arranged under the support bar. Place the supporting bar in the groove of the floor, and place the pile of paper above the supporting bar. When the lower end of the supporting bar is higher than the cross bar, the cross bar can lift the supporting bar together with the paper pile.

In the paper pile lifting device of the paper feeder described above, a guide structure capable of restricting the vertical sliding of the cross bar is provided between the two ends of the cross bar and the frame. The guide structure restricts the vertical sliding of the cross bar and also improves the smoothness of the cross bar sliding, thus effectively avoiding shaking generated during high-speed transmission.

In the paper stack lifting device of the paper feeder, the guide structure includes a guide rod vertically arranged and fixed on the frame, and the two ends of the above-mentioned cross bar are sheathed on the guide rod and are movably connected.

In the paper stack lifting device of the paper feeder described above, the auxiliary chain is provided with bumpers, and the frame is provided with a limit switch capable of contacting the bumper, and the limit switch can control the auxiliary drive mechanism. There are two bumper blocks on the auxiliary chain, the distance between the two bumper blocks is the height at which the cross bar can be lifted/lowered, the bumper block touches the limit switch, and the limit switch controls the auxiliary drive mechanism to stop running .

In the paper pile lifting device of the paper feeder described above, both the main driving mechanism and the auxiliary driving mechanism are motors. The motor has the characteristics of stable operation and easy control, and the device can improve the stability of its operation.

Compared with the prior art, the paper pile lifting device of the paper feeder has the following advantages:

1. An auxiliary lifting mechanism is set above the paper stacking table to realize that the paper feeder can add paper piles to the paper stacking table while maintaining high-speed paper feeding, so as to keep paper to be conveyed on the paper feeder, thus greatly Improve the use efficiency of the paper feeder.

2. The support bar on the auxiliary lifting mechanism can support the remaining paper piles. The support bar can pass through the bottom plate and be erected on the cross bar, and the cross bar can also hold the support bar. It can be seen that it is more convenient to erect the support bar. work efficiency.

3. The use of motor drive and guide mechanism in the device improves the stability of operation, so that the device is suitable for high-speed transmission.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the paper pile lifting device of the paper feeder.

Fig. 2 is a structural schematic diagram of the paper pile lifting device of the paper feeder.

Fig. 3 is a structural schematic diagram of the secondary lifting mechanism of the paper pile lifting device of the paper feeder.

Fig. 4 is a schematic diagram of the bottom plate structure of the paper stack lifting device of the paper feeder.

In the figure, 1. Rack; 2. Stacking table; 3. Main chain; 4. Cross bar; 5. Secondary chain; 6. Guide rod; 7. Main drive mechanism; 10. Limit switch; 11. Auxiliary drive mechanism; 12. Slope plate; 13. Bottom plate; 14. Groove.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, the paper pile lifting device of the paper feeder includes a frame 1, a paper pile table 2, a main chain 3, a main driving mechanism 7, an auxiliary driving mechanism 11, and an auxiliary lifting mechanism.

Specifically, the paper stacker 2 is square and is used to place paper piles. The frame 1 includes two frame 1 boards and support rods. The frame 1 boards are located on the left and right sides of the paper stacker 2. The support rods It is used to connect and fix two rack 1 boards and to fix other mechanisms. On the other hand, it is used to block paper and prevent lateral movement. The frame 1 is provided with a main chain 3, one end of the main chain 3 is connected with the stacker 2, and the other end is connected with the main driving mechanism 7 capable of winding the main chain 3, the main driving mechanism 7 is a motor, and the motor is fixed on On the frame 1, the main chain 3 can be retracted under the action of the motor, so that the stacker 2 can be lifted/down vertically. In order to make the movement of the stacker 2 more stable, which is suitable for the high-speed paper transfer of the high-speed paper feeder, a guide column is fixed on the frame 1 plate of the frame 1, and the guide column is vertical to the upper surface of the stacker 2. The left and right sides of the stacking table 2 are respectively provided with guide wheels, and the outer walls of the guide wheels depend on the guide columns.

The auxiliary lifting mechanism is arranged above the stacker 2, and it includes cross bars 4 positioned at the front and rear sides above the stacker 2 and support bars for supporting the stack of paper. The cross bar 4 is near the paper feeding port and is located between the paper stacking table 2 and the paper feeding port, and the cross bar 4 is about 3/4 of the total height between the paper stacking table 2 and the paper feeding port. The crossbars 4 on the front and rear sides are parallel to each other and to the front and back sides of the stacker 2 , and the two ends of the supporting rods are erected on the crossbar 4 and are perpendicular to the crossbar 4 . The frame 1 is provided with a star wheel 9, the star wheel 9 is located above the cross bar 4 and is arranged on the frame 1, the star wheel 9 is provided with a secondary chain 5, and one end of the secondary chain 5 is connected with the cross bar 4, The other end is connected with the auxiliary driving mechanism 11; each cross bar 4 has two auxiliary chains 5 and the connection and fixing points between the auxiliary chains 5 and the cross bar 4 are located at both ends of the cross bar 4 . This auxiliary driving mechanism 11 is a motor, and the motor is fixed on the frame 1, and the auxiliary chain 5 can be retracted under the action of the motor, thereby vertically lifting/lowering the crossbar 4; the motor has the characteristics of stable operation and easy control. The stability of its operation can be improved in the device.

In order to control the ascending and descending length of the auxiliary chain 5, a limit switch 10 is provided on the frame 1, and the contact of the limit switch 10 is close to the auxiliary chain 5. The block 8 is respectively located on both sides of the contact of the limit switch 10 . The length between the two bumpers 8 is the height at which the crossbar 4 can be raised/lowered. The bumper 8 touches the limit switch 10, and the limit switch 10 can command the auxiliary drive mechanism 11 to stop running. The control method It also corresponds to the above-mentioned advantage that the secondary driving mechanism 11 is a motor. If it is not possible to place a new pile of paper piles after the above-mentioned remaining paper piles have been completely conveyed, since a bumper 8 is provided on the secondary chain 5 and a limit switch 10 is provided on the frame 1, it is ensured that the cross bar 4 does not appear. Transition lift.

In order to improve the stability of the operation of the auxiliary lifting mechanism and make it suitable for the high-speed transmission of the paper feeder, a guide mechanism that can limit the vertical and stable sliding of the cross bar 4 is provided between the two ends of the cross bar 4 and the frame 1 . The guide mechanism includes a guide rod 6 arranged on the frame 1 perpendicular to the upper surface of the stacker 2, and the two ends of the cross bar 4 are sleeved on the guide rod 6 and are movably connected. This guiding mechanism also has the second kind of scheme, on the frame 1, there is a bar-shaped groove 14 perpendicular to the upper surface of the stacker 2, and the two ends of the cross bar 4 are provided with guide pins, and the guide pins are inserted into the groove 14. And it is flexibly connected with the groove 14 . The guide mechanism also has a third scheme, a linear bearing is arranged between the crossbar 4 and the frame 1, and the linear bearing is perpendicular to the upper surface of the stacker 2.

As shown in Figure 4, a base plate 13 is provided on the stacker 2, and 10 to 15 grooves 14 are evenly distributed on the upper surface of the base plate 13. The grooves 14 are perpendicular to the cross bar 4 and run through the upper surface of the base plate 13. The rod can pass through the groove 14 or be embedded in the groove 14. Since there is a certain height between the top of the bottom plate 13 and the ground, in order to facilitate the transportation of the pile of paper to the bottom plate 13, there is a front side of the bottom plate 13. Slope plate 12, the upper end surface of the slope plate 12 is flush with the upper end surface of the base plate 13, and a transition surface is formed between the lower end surface of the slope plate 12 and the ground.

Embodiment one

As shown in Figure 1, Figure 2, and Figure 3, in order to realize that the paper feeder can add paper piles to the stacker 2 under the condition of maintaining high-speed paper feeding, so as to keep the paper feeder always with paper to be conveyed, So as to achieve the purpose of improving work efficiency. Its implementation steps are:

1. Place the first pile of paper on the stacker 2 and run the paper feeder. As the paper is continuously output, the paper pile monitoring system of the paper feeder controls the main drive mechanism 7 to lift the stacker 2 at any time to ensure that the paper is always fed There is paper at the output of the machine, so that it can be transported without interruption.

2. When the stacker 2 is raised until the upper surface of the bottom plate 13 is higher than the cross bar 4, insert the support bar at the groove 14 of the bottom plate 13 so that the support bar passes through the groove 14 and the two ends of the support bar are respectively mounted on the On the front and rear cross bars 4. At this time, the main drive mechanism 7 pulls the stacker 2 to make the stacker 2 return to the lowest position, and the remaining paper pile is held by the supporting rod and the crossbar 4 is lifted by the motor winding auxiliary chain 5, so as to realize lifting of the paper pile, thereby Make sure that there is paper to be conveyed out of the paper output port.

3. Place a new pile of paper on the stacking table 2. The height of the pile does not exceed the height between the bottom of the remaining paper pile and the upper surface of the floor. Lift the stacking table 2 so that the top surface of the new paper pile is in line with the original paper pile. The bottom faces are superimposed, and the support bar is pulled out. At this time, the auxiliary driving mechanism 11 stops working, that is, the auxiliary lifting mechanism stops lifting, and the main driving mechanism 7 lifts the paper pile on the stacker 2, and the auxiliary lifting mechanism drops to the initial position simultaneously.

After completing steps 1-3, steps 2 and 3 need to be cycled sequentially, so as to realize that the paper feeder can always keep paper to be conveyed on the paper feeder while maintaining high-speed paper feeding.

Embodiment two

The structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the support bar is placed in the groove 14 of the floor, the paper stack is placed above the support bar, and when the lower end of the support bar is higher than the cross bar 4, Cross bar 4 drags support bar and lifts together with paper stack.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although this article uses more frame 1; stacker 2; main chain 3; cross bar 4; auxiliary chain 5; guide rod 6; Auxiliary drive mechanism 11; slope plate 12; bottom plate 13; groove 14 and other terms, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (9)

1. A paper pile lifting device for a paper feeder, comprising a frame (1) and a stacker (2) for placing a pile of paper, the frame (1) is provided with a main chain (3), and the main chain ( One end of 3) is connected to the stacker (2), and the other end is provided with a main drive mechanism (7) capable of unwinding the main chain (3) and fixed on the frame (1). When the main drive mechanism (7) is rewound The paper stacking platform (2) is vertically lifted when the main chain (3) is used. It is characterized in that an auxiliary lifting mechanism is provided above the paper stacking platform (2). When the bottom surface of the paper pile is higher than the auxiliary lifting mechanism, the auxiliary lifting mechanism The above paper stack can be supported, and the auxiliary lifting mechanism is connected with the auxiliary driving mechanism (11) fixed on the frame (1) and can make the paper stack detach from the stacking platform (2) and continue to lift. 2. The paper pile lifting device of the paper feeder according to claim 1, wherein the auxiliary lifting mechanism includes cross bars (4) positioned on both sides above the stacker (2) and erected on the cross bar ( 4) The support bar used to support the paper stack is provided with an auxiliary chain (5) on the frame (1). One end of the auxiliary chain (5) is connected to the cross bar (4), and the other end is connected to the above-mentioned auxiliary drive. Mechanism (11) links to each other, and this secondary drive mechanism (11) is provided with and can unwind secondary chain (5) and when secondary drive mechanism (11) rewinds secondary chain (5), crossbar (4) and support bar are lifted. 3. The paper pile lifting device of a paper feeder according to claim 1 or 2, wherein a bottom plate (13) is provided on the described paper pile table (2), and several A strip groove (14) through which the above-mentioned support rod can pass. 4. The paper pile lifting device of the paper feeder according to claim 3, characterized in that, when the upper end surface of the bottom plate (13) is higher than the cross bar (4), the support bar passes through the bottom plate (13) The groove (14) is erected on the cross bar (4). 5. The paper pile lifting device of the paper feeder according to claim 3, characterized in that, the groove (14) on the bottom plate (13) is provided with a supporting bar, when the upper end surface of the bottom plate (13) is high When cross bar (4), cross bar (4) passes through the below of support bar. 6. The paper pile lifting device of a paper feeder according to claim 4 or 5, characterized in that, between the two ends of the cross bar (4) and the frame (1), a cross bar (4) capable of limiting ) guide structure for vertical sliding. the 7. The paper pile lifting device of a paper feeder according to claim 6, wherein said guide structure comprises a guide rod (6) vertically arranged and fixed on the frame (1), and the above-mentioned cross bar ( 4) The two ends are sleeved on the guide rod (6) and are flexibly connected. 8. The paper pile lifting device of the paper feeder according to claim 2, characterized in that, the said auxiliary chain (5) is provided with a bump block (8), and the frame (1) is provided with a bumper block (8). The block (8) touches the limit switch (10) capable of controlling the secondary drive mechanism (11). 9. The paper stack lifting device for a paper feeder according to claim 1 or 2, characterized in that, both the main driving mechanism (7) and the secondary driving mechanism (11) are motors. the

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