Paper storage and feeding method of paper storage and feeding device

Abstract

The present invention discloses a paper storage and feeding method of a paper storage and feeding device, wherein the paper storage and feeding device at least comprises a conveyor belt, a paper storage platform and a lifting and conveying mechanism, the lifting and conveying mechanism comprises a lifting baffle, the working surface of the paper storage platform is parallel to the working surface of the conveyor belt, and the paper storage platform is provided with a lifting device; the lifting and conveying mechanism is arranged at the end of the conveyor belt along the conveying direction; the length of the paper storage platform along the conveying direction of the conveyor belt is less than the length of the conveyor belt, and a paper storage gap is arranged between the paper storage platform and the lifting baffle. The paper storage and feeding method of the paper storage and feeding device of the present invention realizes the separation of a single paper stack and a large paper stack by changing the height between the paper storage platform and the conveyor belt. Compared with the prior art, the structure is simpler, easier to control, lower in cost, and the reliability of separating paper stacks is better.

Description

Technical Field

[0001] The invention relates to a paper accumulating and feeding method of a paper accumulating and feeding device. Background Art

[0002] In the production process of rigid paper boxes (such as rigid small cigarette labels), it is often necessary to pass the die-cut rigid paper boxes through the inspection machine for printing and die-cutting quality inspection through the corner bending device, or enter the box gluing machine for box gluing. At present, in order to improve the efficiency of manual paper feeding, a paper storage and conveying device is generally set before the corner bending device to store large piles of paper waiting to enter the corner bending station, and continuously convey individual paper piles to the corner bending station.

[0003] Chinese invention patent CN105293156B discloses a paper breaking and loading machine for inspection machines, which is a paper storage conveying device before a large pile of paper piles enters the stacking station. The stacking and loading mechanism consists of a long conveyor belt device and a short conveyor belt device. By controlling the speed of the short conveyor belt to be higher than the speed of the long conveyor belt, a single stack of paper can be separated from the large pile of paper piles. This method requires the use of two sets of power rollers and complex speed control. The problem of unstable paper feeding and tipping over is very likely to occur at the junction of the long and short conveyor belts. The cost is high and the reliability is poor. In addition, since the paper pile is placed directly on the conveyor belt, the friction between the conveyor belt and the paper pile is large, and it is not easy to adjust the alignment after placement. Therefore, the requirements for placing the paper pile are high, and it is required to be done in one step, which is difficult to operate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to solve the technical defects of the paper storage and conveying device in the prior art, such as complex speed control, easy tipping, high cost, difficult adjustment and poor reliability.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a paper storage and feeding device, at least comprising a conveyor belt, a paper storage platform and a lifting and conveying mechanism, the lifting and conveying mechanism comprising a lifting baffle, the working surface of the paper storage platform is parallel to the working surface of the conveyor belt, the paper storage platform is provided with a lifting device, the lower limit position of the working surface of the paper storage platform is lower than the working surface of the conveyor belt, and the upper limit position of the working surface of the paper storage platform is higher than the working surface of the conveyor belt; the lifting baffle is arranged at the end of the conveyor belt along the conveying direction; the length of the paper storage platform along the conveying direction of the conveyor belt is less than the length of the conveyor belt, and a paper storage gap is provided between the paper storage platform and the lifting baffle.

[0006] In a preferred embodiment, the paper storage gap includes a separation station and an arrival station.

[0007] In a preferred embodiment, an anti-dumping mechanism is provided at the end of the separation station along the conveying direction.

[0008] In a preferred embodiment, the anti-dump mechanism includes an anti-dump fork and an anti-dump lifting drive for driving the anti-dump fork to rise and fall in a vertical direction, the upper limit position of the upper end of the anti-dump fork is higher than the working surface of the conveyor belt, and the lower limit position of the upper end of the anti-dump fork is lower than the working surface of the conveyor belt.

[0009] A preferred embodiment further comprises a paper accumulation gauge, which is arranged on one side of the conveyor belt and the paper accumulation platform along the conveying direction of the conveyor belt, and the reference plane of the paper accumulation gauge is perpendicular to the working surface of the paper accumulation platform.

[0010] A paper storage and feeding method of the paper storage and feeding device as described above at least comprises the following steps:

[0011] The paper accumulation process is to place a large pile of paper on the working surface of the paper accumulation platform. In this process, the working surface of the paper accumulation platform is higher than the working surface of the conveyor belt;

[0012] In the separation process, the lifting device drives the paper storage platform downward until the working surface of the paper storage platform is lower than the working surface of the conveyor belt, and the lower surface of the large paper stack contacts the working surface of the conveyor belt. After the conveyor belt drives the large paper stack to move a certain distance, the conveyor belt stops; the lifting device drives the paper storage platform upward until the working surface of the paper storage platform is higher than the working surface of the conveyor belt. At this time, the lower surface of the large paper stack is separated from the conveyor belt and contacts the paper storage platform, and the individual paper stack separated from the large paper stack is located on the conveyor belt in the paper storage gap;

[0013] In the paper feeding process, the conveyor belt starts to drive the individual paper stack to move until the individual paper stack contacts the lifting and conveying mechanism. Then the conveyor belt stops and the lifting and conveying mechanism conveys the individual paper stack to the next process.

[0014] In a preferred embodiment, an anti-dumping mechanism is provided at the end of the separation process. In the separation process, the conveyor belt drives the large pile of paper stacks to move until the forward side end surface of the large pile of paper stacks is close to the anti-dumping mechanism or contacts the anti-dumping mechanism, and then the conveyor belt stops.

[0015] In a preferred embodiment, in the paper feeding process, the conveyor belt is started after the anti-dumping mechanism releases the limit on the individual paper stack.

[0016] A preferred embodiment further includes a shaping step in the paper accumulation step to align the side surfaces of the large pile of paper.

[0017] In a preferred embodiment, a paper storage gauge extending along the conveying direction of the conveyor belt is provided on one side of the conveyor belt and the paper storage platform, the reference plane of the paper storage gauge is perpendicular to the working surface of the paper storage platform, and the head side end faces of the large paper stack and the individual paper stack are always in contact with the reference plane of the paper storage gauge.

[0018] The paper storing and feeding method of the paper storing and feeding device of the present invention realizes the separation of individual paper stacks from large paper stacks by changing the height between the paper storing platform and the conveyor belt. Compared with the prior art, it has a simpler structure, is easier to control, has lower cost, and has better reliability in separating paper stacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the paper stack structure and paper feeding travel direction in this embodiment;

[0020] Figure 2 Schematic diagram of the structure of the paper storage and feeding device in this embodiment;

[0021] Figure 3 This is a schematic diagram of the state of the separation process of the paper storage and feeding device in this embodiment;

[0022] Figure 4 It is a schematic diagram of the structure of the paper storage platform and the conveyor belt in the paper storage and conveying device of this embodiment;

[0023] Figure 5 Schematic diagram of the structure of the anti-dumping mechanism in the paper storage and feeding device of this embodiment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0025] Figure 1 The figure shows a schematic diagram of the paper stack structure and paper feeding direction in this embodiment, wherein the direction indicated by the arrow is the paper feeding direction of the paper stack, wherein the paper stack includes a large pile of paper stacks 7, separated individual paper stacks 8, and an in-place paper stack 9 formed after the individual paper stacks 8 travel to the paper feeding station, wherein each paper stack includes a head side end face 7A / 8A / 9A, a forward side end face 7B / 8B / 9B and a lower surface 7C / 8C / 9C.

[0026] The paper storage and feeding device of this embodiment is as follows: Figure 1 As shown, it includes a conveyor belt 2, a paper storage platform 3, a lifting conveying mechanism and an anti-dumping mechanism 6 arranged on a frame 1, wherein the lifting conveying mechanism includes a lifting baffle 5. Figure 4 As shown, the working surface of the paper accumulation platform 3 is parallel to the working surface of the conveyor belt 2, and the conveyor belt 2 is driven by a motor 2A.

[0027] In this embodiment, the paper storage platform 3 is provided with a lifting device 3A, and the lifting device 3A drives the paper storage platform 3 to move in the vertical direction. The lifting device 3A can use any driving mechanism that can achieve vertical lifting, such as a hydraulic cylinder, an air cylinder, a linear motor, a screw mechanism, etc. Further, the lower limit position of the working surface of the paper storage platform 3 is lower than the working surface of the conveyor belt 2, and the upper limit position of the working surface of the paper storage platform 3 is higher than the working surface of the conveyor belt. In order to achieve the lifting between the paper storage platform 3 and the conveyor belt 2, as a preferred embodiment, Figure 4 As shown, the paper storage platform 3 and the conveyor belt 2 both include a plurality of mutually parallel planes and are arranged in an interlaced manner, with space for relative lifting. Of course, the paper storage platform 3 and the conveyor belt 2 can also be arranged in other ways, as long as they do not interfere with each other during the relative lifting process.

[0028] like Figure 2 , Figure 3 As shown, in this embodiment, the lifting baffle 5 is arranged at the end of the conveyor belt 2 along the conveying direction. Since the lifting conveying mechanism belongs to the conventional technology in this field, this application does not make improvements to the structure, so the specific structure of the lifting conveying mechanism is not described in detail in this embodiment.

[0029] As an improvement of this embodiment, the length of the paper storage platform 3 along the conveying direction of the conveyor belt is smaller than the length of the conveyor belt 2 , and a paper storage gap that can at least accommodate a single paper stack 8 is provided between the paper storage platform 3 and the lifting baffle 5 .

[0030] In one embodiment, the paper storage gap can just accommodate a single paper stack 8, and the single paper stack 8 is directly transported to the next process by the lifting and conveying mechanism after being separated at the paper storage gap. Although this structure can achieve the separation of paper stacks, due to the friction between the single paper stack 8 and the large paper stack 7 during the process of the lifting and conveying mechanism driving the single paper stack to rise, it is easy to disrupt the arrangement of the paper stacks, affecting efficiency.

[0031] In another embodiment, the paper storage gap includes a separation station and an in-place station. After the individual paper stack 8 is separated at the separation station, the conveyor belt conveys the individual paper stack 8 from the separation station to the in-place station, and then the individual paper stack 8 is conveyed to the next process by the lifting and conveying mechanism. This structure can also achieve the purpose of paper stack separation, and at the same time, it can also avoid friction in the process of the lifting and conveying mechanism driving the individual paper stack to rise. However, the defect of this mechanism is that when the conveyor belt stops at the separation station, due to the inertia of the large pile of paper stacks, it is easy to tip over, and the reliability is low.

[0032] In a preferred implementation of this embodiment, the paper storage gap includes a separation station and an in-place station, and an anti-dumping mechanism is provided at the end of the separation station along the conveying direction. Figure 5As shown, the anti-dumping mechanism 6 includes an anti-dumping fork 6B and an anti-dumping lifting driver 6A for driving the anti-dumping fork 6B to rise and fall in the vertical direction, the upper limit position of the upper end of the anti-dumping fork is higher than the working surface of the conveyor belt, and the lower limit position of the upper end of the anti-dumping fork is lower than the working surface of the conveyor belt. It should be noted that the anti-dumping lifting driver 6A can use any driving mechanism that can achieve vertical lifting, such as a hydraulic cylinder, a pneumatic cylinder, a linear motor, a screw mechanism, etc. It should also be noted that the lifting anti-dumping mechanism provided in this embodiment is only a preferred embodiment of this embodiment. The anti-dumping mechanism can also be arranged on the side and extended and retracted on the side of the conveyor belt, which can also achieve the anti-dumping effect.

[0033] A preferred embodiment, as Figure 2 As shown, a paper accumulation stopper 4 is provided on one side of the conveyor belt 2 and the paper accumulation platform 3 along the conveying direction of the conveyor belt, and the reference plane of the paper accumulation stopper 4 is perpendicular to the working surface of the paper accumulation platform 3. During the paper accumulation and paper feeding process, the head side end face of the paper stack always keeps in contact with the reference plane of the paper accumulation stopper 4.

[0034] In this embodiment, the paper storage and feeding method using the above-mentioned paper storage and feeding device at least includes the following steps:

[0035] (1) Paper storage process, a large pile of paper 7 is placed on the working surface of the paper storage platform 3. In this process, the working surface of the paper storage platform 3 is higher than the working surface of the conveyor belt 2. This process also includes a shaping process, aligning the side surfaces of the large pile of paper 7, especially the head side end surface 7A is in contact with the reference plane of the paper storage baffle 4. Since the upper surface of the paper storage platform is a smooth plane, the large pile of paper 7 can still move smoothly on its surface after being placed on it for easy alignment adjustment, so it is easier to place paper, and it is not easy to cause paper misalignment, thus avoiding product scrapping. Invention patent CN103896046B uses the upper surface of the conveyor belt of a long conveyor belt device as the reference surface for manual paper placement. Since the paper stack is directly placed on the conveyor belt, the friction between the conveyor belt and the paper stack is large, and it is not easy to adjust the alignment after placement, which is easy to cause paper misalignment, thereby causing product scrapping. Therefore, the requirements for placing the paper stack are high, requiring one-step completion, and the operation is difficult.

[0036] (2) Separation process: the lifting device 3A drives the paper accumulation platform 3 downward until the working surface of the paper accumulation platform 3 is lower than the working surface of the conveyor belt 2, and the lower surface 7C of the large paper pile 7 contacts the working surface of the conveyor belt 2. The conveyor belt 2 drives the large paper pile 7 to move until the forward side end surface 7B of the large paper pile 7 is close to the anti-dumping mechanism or contacts the anti-dumping fork 6B of the anti-dumping mechanism 6, and then the conveyor belt 2 stops; the lifting device 3A drives the paper accumulation platform 3 upward until the working surface of the paper accumulation platform 3 is higher than the working surface of the conveyor belt 2. At this time, the lower surface 7C of the large paper pile 7 is separated from the conveyor belt 2 and contacts the paper accumulation platform 3. Figure 3As shown in the figure, the individual paper stack 8 separated from the large paper stack 7 is located between the anti-dumping mechanism 6 and the paper storage platform 3 on the conveyor belt 2. Since the large paper stack 7 has the inertia to move forward during the process of the conveyor belt 2 from running to stopping, the inertia of the large paper stack 7 is eliminated by the anti-dumping mechanism 6 to prevent the paper stack from dumping.

[0037] (3) During the paper feeding process, the anti-dumping fork 6B of the anti-dumping mechanism 6 moves downward until the upper end of the anti-dumping fork is lower than the working surface of the conveyor belt 2. The conveyor belt 2 starts to drive the individual paper stack 8 to move until the individual paper stack 8 contacts the lifting baffle 5, and then the conveyor belt stops. Figure 2 As shown, the individual paper stacks 8 at this position constitute an in-place paper stack 9, which is transported to the next process, such as a folder gluing machine or a product inspection machine, by a lifting and conveying mechanism.

[0038] It should be noted that the above-mentioned paper accumulation and feeding method is for a paper accumulation and feeding device with an anti-dumping mechanism.

[0039] Based on the analysis of the above specific embodiments, the present invention has the following technical advantages compared with the prior art:

[0040] (1) Since the upper surface of the paper storage platform is a smooth plane, a large pile of paper can be placed on it and can still move smoothly on its surface for easy alignment adjustment. Therefore, it is easier to place paper and it is not easy to cause paper misalignment, thus avoiding product scrapping. In the prior art, the upper surface of the conveyor belt of a long conveyor belt device is used as the reference surface for manual paper placement. Since the paper stack is directly placed on the conveyor belt, the friction between the conveyor belt and the paper stack is large, and it is difficult to adjust the alignment after placement, which is easy to cause paper misalignment, thereby causing product scrapping. Therefore, the requirements for placing the paper stack are high, requiring one-step completion, and the operation is difficult.

[0041] (2) The separation of a single paper stack from a large paper stack is achieved by changing the height between the paper storage platform and the conveyor belt, and the single paper stack is prevented from tipping over by an anti-dumping mechanism during the separation process. Compared with the prior art of separating paper stacks by controlling the speed difference between the short conveyor belt and the long conveyor belt, the structure is simpler, easier to control, lower in cost, and more reliable in separating paper stacks.

[0042] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper storage and feeding method for a paper storage and feeding device, characterized in that: The paper storage and feeding device at least comprises a conveyor belt, a paper storage platform and a lifting and conveying mechanism, wherein the lifting and conveying mechanism comprises a lifting baffle, the working surface of the paper storage platform is parallel to the working surface of the conveyor belt, the paper storage platform is provided with a lifting device, the lower limit position of the working surface of the paper storage platform is lower than the working surface of the conveyor belt, and the upper limit position of the working surface of the paper storage platform is higher than the working surface of the conveyor belt; the lifting baffle is arranged at the end of the conveyor belt along the conveying direction; the paper storage platform and the conveyor belt both comprise a plurality of mutually parallel planes and are arranged staggered with each other, and have a relative lifting space; The length of the paper storage platform along the conveying direction of the conveyor belt is less than the length of the conveyor belt, a paper storage gap is provided between the paper storage platform and the lifting baffle, the conveyor belt extends into the paper storage gap, and the paper storage gap includes a separation station and an in-position station; an anti-dumping mechanism is provided at the end of the separation station along the conveying direction, the anti-dumping mechanism includes an anti-dumping fork and an anti-dumping lifting driver for driving the anti-dumping fork to rise and fall in the vertical direction, the upper limit position of the upper end of the anti-dumping fork is higher than the working surface of the conveyor belt, and the lower limit position of the upper end of the anti-dumping fork is lower than the working surface of the conveyor belt; The paper storage and feeding method at least comprises the following steps: The paper accumulation process is to place a large pile of paper on the working surface of the paper accumulation platform. In this process, the working surface of the paper accumulation platform is higher than the working surface of the conveyor belt; In the separation process, the lifting device drives the paper storage platform downward until the working surface of the paper storage platform is lower than the working surface of the conveyor belt, and the lower surface of the large paper stack contacts the working surface of the conveyor belt. The conveyor belt drives the large paper stack to move until the forward side end surface of the large paper stack is close to the anti-dumping mechanism or contacts the anti-dumping mechanism, and then the conveyor belt stops; the lifting device drives the paper storage platform upward until the working surface of the paper storage platform is higher than the working surface of the conveyor belt. At this time, the lower surface of the large paper stack is separated from the conveyor belt and contacts the paper storage platform, and the individual paper stack separated from the large paper stack is located on the conveyor belt in the paper storage gap; In the paper feeding process, the conveyor belt starts to drive the individual paper stack to move until the individual paper stack contacts the lifting and conveying mechanism. Then the conveyor belt stops and the lifting and conveying mechanism conveys the individual paper stack to the next process.

2. The paper storage and feeding method according to claim 1, characterized in that: In the paper feeding process, after the anti-dumping mechanism releases the limit on the individual paper stack, the conveyor belt starts.

3. The paper storage and feeding method according to claim 1 or 2, characterized in that: The paper stacking process also includes a shaping process to align the sides of the large pile of paper.

4. The paper storage and feeding method according to claim 3, characterized in that: A paper storage gauge extending along the conveying direction of the conveyor belt is provided on one side of the conveyor belt and the paper storage platform. The reference plane of the paper storage gauge is perpendicular to the working surface of the paper storage platform. The head side end faces of the large paper pile and the individual paper pile are always in contact with the reference plane of the paper storage gauge.

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