Paper feeding device

Abstract

The application discloses a paper feeding device and relates to the technical field of die-cutting machines. The front blocking gauge plate and the two side blocking gauge plates of the paper feeding device are provided with brush rollers and driving mechanisms for driving the brush rollers to rotate. The brush rollers are used for cooperating with the paper supporting mechanism of the paper feeding device to divide the paper stack in the paper stack containing space into upper and lower layers, and the brush rollers are used for pushing the paperboard of the upper layer of the paper stack to the lower layer of the paper stack under the driving of the driving mechanisms. The air suction paper feeding mechanism of the paper feeding device is used for adsorbing the lowermost paperboard of the lower layer of the paper stack and outputting the adsorbed lowermost paperboard from the paper conveying channel. The paper feeding device greatly reduces the pressure borne by the lowermost paperboard of the paper stack, solves the paperboard scratch problem and guarantees the quality of the paperboard.

Description

Technical Field

[0001] This invention relates to the field of die-cutting machine technology, and more specifically to a paper feeding device. Background Technology

[0002] When the existing die-cutting machine's leading edge paper feeding device is in use, the paper stack is completely pressed on the suction paper feeding mechanism, which causes the bottom layer of the paper stack to be subjected to great pressure. During the paper feeding process, the bottom layer of the paper stack is not only prone to friction and scratches with the suction paper feeding mechanism, but also easily friction and scratches with adjacent paper stacks, making the paper stack fail to meet quality requirements.

[0003] Currently, the main methods to solve the problem of scratches on cardboard during paper feeding are as follows: Figure 5 As shown, the paper-supporting mechanism 3 lifts part of the cardboard from the rear end of the paper stack 8 to reduce the pressure on the bottom cardboard of the paper stack 8. Although this method can reduce cardboard scratches, the pressure on the bottom cardboard of the paper stack 8 is still relatively large because the front end of the paper stack 8 is still entirely pressed on the suction and paper feeding mechanism 2. Therefore, the problem of cardboard scratches cannot be solved. Summary of the Invention

[0004] In view of the above-mentioned defects in the existing technology, the present invention provides a paper feeding device. This paper feeding device greatly reduces the pressure on the bottom layer of the paperboard by dividing the paper stack into layers, solves the problem of scratches on the paperboard during the paper feeding process, and ensures the quality of the paperboard.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] The paper feeding device includes a frame, and a suction paper feeding mechanism, a paper supporting mechanism, a front baffle plate, and two side baffle plates mounted on the frame. The front baffle plate and the paper supporting mechanism are positioned opposite each other on the front and rear sides of the suction paper feeding mechanism, and the two side baffle plates are positioned opposite each other on the left and right sides of the suction paper feeding mechanism. The suction paper feeding mechanism, the paper supporting mechanism, the front baffle plate, and the two side baffle plates together form a paper stack accommodating space, and a space is provided between the front baffle plate and the suction paper feeding mechanism. The paper feeding channel is provided. The front baffle plate and the two side baffle plates are each equipped with a brush roller and a drive mechanism for driving the brush roller to rotate. The brush roller is used to cooperate with the paper holding mechanism to divide the paper stack in the paper stack accommodating space into upper and lower layers. Under the drive of the drive mechanism, the brush roller is used to push the cardboard of the upper paper stack to the lower paper stack. The suction paper feeding mechanism is used to adsorb the bottom cardboard of the lower paper stack and output the adsorbed bottom cardboard from the paper feeding channel.

[0007] The driving mechanism includes a motor and a transmission mechanism, with the transmission mechanism disposed between the motor and the brush roller.

[0008] The transmission mechanism is one of the following: a gear transmission mechanism, a belt transmission mechanism, and a chain transmission mechanism.

[0009] The front baffle plate is provided with a mounting frame, which is located outside the paper stack accommodating space. The brush roller and the driving mechanism are mounted on the mounting frame. The front baffle plate is provided with a first clearance opening, through which the brush roller extends into the paper stack accommodating space.

[0010] The side baffle plate is provided with an angle adjustment component for adjusting the angle of the brush roller. The angle adjustment component is located outside the paper stack accommodating space. The brush roller and the driving mechanism are disposed on the angle adjustment component. The side baffle plate is provided with a second clearance opening, through which the brush roller extends into the paper stack accommodating space.

[0011] The angle adjustment assembly includes a fixed frame, an adjusting frame, and a locking bolt. The fixed frame is fixedly mounted on the side baffle plate and has a circular hole and an arc-shaped elongated hole. The arc-shaped elongated hole extends circumferentially around the axis of the circular hole. A rotating shaft is rotatably mounted inside the circular hole. The adjusting frame is located between the fixed frame and the side baffle plate and is mounted on the rotating shaft. The locking bolt passes through the arc-shaped elongated hole and is fixedly connected to the adjusting frame. The brush roller and the drive mechanism are mounted on the adjusting frame.

[0012] The front baffle plate is equipped with a photoelectric switch for detecting the height of the lower paper stack.

[0013] The suction and paper feeding mechanism includes a suction box mechanism and a paper feeding roller mechanism, with the suction box mechanism located below the paper feeding roller mechanism.

[0014] By adopting the above technical solution, the beneficial effects of the present invention are:

[0015] The paper feeding device provided by this invention makes full use of the toughness of the bristles on the brush roller. By cooperating with the paper support mechanism, the paper stack in the paper stack accommodating space is divided into upper and lower layers. Since only the lower layer of paper stack is placed on the suction paper feeding mechanism, the pressure on the bottom layer of paperboard is greatly reduced, solving the problem of scratches on the paperboard during the paper feeding process and ensuring the quality of the paperboard. Furthermore, driven by the drive mechanism, the brush roller pushes the paperboard from the upper layer of paper stack to the lower layer of paper stack, achieving the purpose of continuous paperboard feeding, thus improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the paper feeding device of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the front baffle plate, brush roller and drive mechanism in the paper feeding device of the present invention;

[0018] Figure 3 This is an exploded view of the side baffle plate, brush roller, drive mechanism and angle adjustment assembly in the paper feeding device of the present invention;

[0019] Figure 4 This is a diagram showing the usage state of the paper feeding device of the present invention;

[0020] Figure 5 This is a diagram showing the usage status of a paper feeding device in the prior art;

[0021] In the diagram: 1. Frame; 2. Suction and paper feeding mechanism; 3. Paper support mechanism; 4. Front baffle plate; 41. First clearance opening; 42. First mounting plate; 43. Second mounting plate; 5. Side baffle plate; 51. Second clearance opening; 52. Fixed frame; 53. Adjusting frame; 531. Connecting arm; 532. Connecting plate; 533. Threaded hole; 54. Locking bolt; 55. Arc-shaped elongated hole; 56. Round hole; 57. Rotating shaft; 6. Paper feeding channel; 7. Brush roller; 71. Main shaft; 8. Paper stack; 81. Upper paper stack; 82. Lower paper stack; 9. Motor; 10. Drive pulley; 11. Driven pulley; 12. Drive belt; 13. Photoelectric switch. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] For ease of description, in this embodiment, the position of the front baffle plate 4 of the paper feeding device is defined as front, the position of the paper holding mechanism 3 of the paper feeding device is defined as rear, the position of the upper paper stack 81 of the paper feeding device is defined as up, and the position of the upper and lower paper stacks 82 of the paper feeding device is defined as down. Based on the definitions of front, rear, up, and down, the positions of the two side baffle plates 5 of the paper feeding device are determined to be left and right, respectively. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] like Figures 1 to 4 As shown, the paper feeding device includes a frame 1, and a suction paper feeding mechanism 2, a paper supporting mechanism 3, a front baffle plate 4, and two side baffle plates 5 mounted on the frame 1. The front baffle plate 4 and the paper supporting mechanism 3 are positioned opposite each other on the front and rear sides of the suction paper feeding mechanism 2, and the two side baffle plates 5 are positioned opposite each other on the left and right sides of the suction paper feeding mechanism 2. The suction paper feeding mechanism 2, the paper supporting mechanism 3, the front baffle plate 4, and the two side baffle plates 5 together form a paper stack accommodating space, and a paper feeding channel 6 is provided between the front baffle plate 4 and the suction paper feeding mechanism 2.

[0025] To reduce the pressure of the paper stack 8 on the suction and paper feeding mechanism 2, this embodiment provides brush rollers 7 and driving mechanisms for driving the brush rollers 7 to rotate on the front baffle plate 4 and the two side baffle plates 5. The brush rollers 7 are used to cooperate with the paper support mechanism 3 to divide the paper stack 8 in the paper stack accommodating space into upper and lower layers. Under the drive of the driving mechanism, the brush rollers 7 are used to push the cardboard of the upper paper stack 81 to the lower paper stack 82. The suction and paper feeding mechanism 2 is used to adsorb the bottommost cardboard of the lower paper stack 82 and output the adsorbed bottommost cardboard from the paper feeding channel 6.

[0026] In this embodiment, the driving mechanism for driving the brush roller 7 to rotate includes a motor 9 and a transmission mechanism. The transmission mechanism is located between the motor 9 and the brush roller 7, and the transmission mechanism is preferably a belt transmission mechanism. In practical applications, the transmission mechanism can also be a gear transmission mechanism or a chain transmission mechanism, depending on the actual needs. This embodiment does not impose any restrictions on this.

[0027] Specifically, the transmission mechanism includes a driving pulley 10, a driven pulley 11, and a transmission belt 12 wound around the driving pulley 10 and the driven pulley 11. Since the synchronous belt has no relative slippage during transmission, and has accurate transmission ratio, high transmission efficiency, and smooth operation, the transmission belt 12 is preferably a synchronous belt. Accordingly, both the driving pulley 10 and the driven pulley 11 are synchronous pulleys.

[0028] In this embodiment, a mounting frame is provided on the front baffle plate 4. The mounting frame is located outside the paper stack accommodating space. The brush roller 7 and the drive mechanism are mounted on the mounting frame. A first clearance opening 41 extending in the left-right direction is provided on the front baffle plate 4. The main shaft 71 of the brush roller 7 extends in the same direction as the first clearance opening 41, and the brush roller 7 extends into the paper stack accommodating space through the first clearance opening 41.

[0029] Specifically, the mounting frame includes a first mounting plate 42 and a second mounting plate 43. The motor 9 is fixedly mounted on the first mounting plate 42 and is located between the first mounting plate 42 and the second mounting plate 43. The output shaft of the motor 9 passes through the first mounting plate 42 and is connected to the drive pulley 10. The main shaft 71 of the brush roller 7 is rotatably mounted on the first mounting plate 42 and the second mounting plate 43 through a bearing seat. The main shaft 71 passes through the first mounting plate 42 and is connected to the driven pulley 11. The transmission belt 12 is wound around the drive pulley 10 and the driven pulley 11.

[0030] In this embodiment, the side baffle plate 5 is provided with an angle adjustment assembly for adjusting the angle of the brush roller 7. The angle adjustment assembly is located outside the paper stack accommodating space. The brush roller 7 and the driving mechanism are mounted on the angle adjustment assembly. The side baffle plate 5 is provided with a second clearance opening 51 extending in the front-rear direction. The brush roller 7 extends into the paper stack accommodating space through the second clearance opening 51. By adjusting the tilt angle of the brush roller 7 through the angle adjustment assembly, it is convenient for the brush roller 7 on the side baffle plate 5 to cooperate with the paper support mechanism 3 to tilt the cardboard of the upper paper stack 81 (e.g., ...). Figure 4 As shown), this facilitates the falling of the cardboard from the upper stack 81 onto the lower stack 82.

[0031] In this embodiment, the angle adjustment assembly includes a fixed frame 52, an adjustment frame 53, and a locking bolt 54. The fixed frame 52 is fixedly mounted on the side baffle plate 5, and the fixed frame 52 is provided with a round hole 56 and an arc-shaped elongated hole 55. The arc-shaped elongated hole 55 extends circumferentially around the axis of the round hole 56. A rotating shaft 57 is rotatably mounted inside the round hole 56. The adjustment frame 53 is located between the fixed frame 52 and the side baffle plate 5, and the adjustment frame 53 is mounted on the rotating shaft 57. The locking bolt 54 passes through the arc-shaped elongated hole 55 and is fixedly connected to the adjustment frame 53. The brush roller 7 and the drive mechanism are mounted on the adjustment frame 53.

[0032] Specifically, the adjusting frame 53 includes a connecting plate 532 and two connecting arms 531 located on the same side of the connecting plate 532. The motor 9 is located between the two connecting arms 531 and is fixedly installed on one of the connecting arms 531. The output shaft of the motor 9 passes through the connecting arm 531 and is connected to the drive pulley 10. The main shaft 71 of the brush roller 7 is rotatably installed on the two connecting arms 531 through a bearing seat. The main shaft 71 passes through one of the connecting arms 531 and is connected to the driven pulley 11. The transmission belt 12 is wound around the drive pulley 10 and the driven pulley 11. The connecting plate 532 is provided with a threaded hole 533. The locking bolt 54 passes through the arc-shaped elongated hole 55 and is threadedly connected to the threaded hole 533.

[0033] To achieve continuous paperboard feeding, this embodiment includes a photoelectric switch 13 on the front guide plate 4 for detecting the height of the lower paper stack 82. When the height of the lower paper stack 82 is lower than the height of the photoelectric switch 13, causing the photoelectric switch 13 to fail to detect the lower paper stack 82, all brush rollers 7 rotate synchronously under the drive of the corresponding motors 9 to transfer the paperboard from the upper paper stack 81 to the lower paper stack 82.

[0034] The suction and paper feeding mechanism 2 in this embodiment includes a suction box mechanism and a paper feeding roller mechanism. The suction box mechanism is located below the paper feeding roller mechanism, and the paper feeding channel 6 is located between the paper feeding roller mechanism and the front baffle plate 4. The suction box mechanism is used to adsorb the bottommost paperboard of the lower paper stack 82 onto the paper feeding roller mechanism, and the paper feeding roller mechanism is used to output the adsorbed bottommost paperboard from the paper feeding channel 6.

[0035] The structure of the paper feeding device of the present invention has been described in detail above. Compared with the prior art, the paper feeding device of the present invention makes full use of the toughness of the bristles on the brush roller 7. By cooperating with the paper support mechanism 3, the paper stack 8 in the paper stack accommodating space is divided into upper and lower layers. Since only the lower paper stack 82 is placed on the suction paper feeding mechanism 2, the pressure on the bottom layer of the paperboard of the paper stack 8 is greatly reduced, solving the problem of scratches on the paperboard during the paper feeding process and ensuring the quality of the paperboard. Furthermore, under the drive of the drive mechanism, the paperboard of the upper paper stack 81 is pushed to the lower paper stack 82 by the brush roller 7, achieving the purpose of continuous paperboard feeding, thus improving work efficiency.

[0036] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. A paper feeding device, comprising a frame, and a suction paper feeding mechanism, a paper supporting mechanism, a front baffle plate, and two side baffle plates disposed on the frame, wherein the front baffle plate and the paper supporting mechanism are disposed opposite to each other on the front and rear sides of the suction paper feeding mechanism, and the two side baffle plates are disposed opposite to each other on the left and right sides of the suction paper feeding mechanism, wherein the suction paper feeding mechanism, the paper supporting mechanism, the front baffle plate, and the two side baffle plates together form a paper stack accommodating space, and a paper conveying channel is provided between the front baffle plate and the suction paper feeding mechanism, characterized in that, The front baffle plate and both side baffle plates are equipped with brush rollers and a drive mechanism for driving the brush rollers to rotate. The brush rollers are used in conjunction with the paper holding mechanism to divide the paper stack in the paper stack accommodating space into upper and lower layers. Under the drive of the drive mechanism, the brush rollers are used to push the cardboard of the upper paper stack to the lower paper stack. The suction paper feeding mechanism is used to adsorb the bottommost cardboard of the lower paper stack and output the adsorbed bottommost cardboard from the paper feeding channel. The side baffle plate is provided with an angle adjustment component for adjusting the angle of the brush roller. The angle adjustment component is located outside the paper stack accommodating space. The brush roller and the driving mechanism are disposed on the angle adjustment component. The side baffle plate is provided with a second clearance opening. The brush roller extends into the paper stack accommodating space through the second clearance opening. The angle adjustment assembly includes a fixed frame, an adjusting frame, and a locking bolt. The fixed frame is fixedly mounted on the side baffle plate and has a circular hole and an arc-shaped elongated hole. The arc-shaped elongated hole extends circumferentially around the axis of the circular hole. A rotating shaft is rotatably mounted inside the circular hole. The adjusting frame is located between the fixed frame and the side baffle plate and is mounted on the rotating shaft. The locking bolt passes through the arc-shaped elongated hole and is fixedly connected to the adjusting frame. The brush roller and the drive mechanism are mounted on the adjusting frame.

2. The paper feeding device according to claim 1, characterized in that, The drive mechanism includes a motor and a transmission mechanism, with the transmission mechanism disposed between the motor and the brush roller.

3. The paper feeding device according to claim 2, characterized in that, The transmission mechanism is one of the following: gear transmission mechanism, belt transmission mechanism, and chain transmission mechanism.

4. The paper feeding device according to claim 1, characterized in that, A mounting bracket is provided on the front guide plate. The mounting bracket is located outside the paper stack accommodating space. The brush roller and the driving mechanism are mounted on the mounting bracket. A first clearance opening is provided on the front guide plate. The brush roller extends into the paper stack accommodating space through the first clearance opening.

5. The paper feeding device according to claim 1, characterized in that, The front baffle plate is equipped with a photoelectric switch for detecting the height of the lower paper stack.

6. The paper feeding device according to claim 1, characterized in that, The suction and paper feeding mechanism includes a suction box mechanism and a paper feeding roller mechanism, with the suction box mechanism located below the paper feeding roller mechanism.

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