Stacking mechanism for paper sheets

Abstract

A paper stack conveying mechanism comprises a slide for supporting a paper stack, a first pushing member for pushing the paper stack to move along the slide, and a first supporting member for supporting the paper stack, the first pushing member and the first supporting member being erected to a height sufficient to prevent the paper stack from toppling, a first reciprocating mechanism for synchronously reciprocating the first pushing member and the first supporting member along the direction of the slide, and a turnover mechanism provided in the first reciprocating mechanism for overturning the first supporting member, the turnover mechanism being capable of overturning the first supporting member between an erected position and a laid-down position, and the first supporting member in the laid-down position being located below the paper stack. The paper stack conveying mechanism of the present application ensures that the paper stack will not topple during movement along the slide, and even when a high and towering paper stack with many layers is conveyed, the paper stack will not topple, thus overcoming the defect of the prior art paper stack conveying mechanism that is not suitable for conveying high and towering paper stacks.

Description

Technical Field

[0001] This utility model relates to equipment used in the production of folded tissues, and more particularly to a conveying mechanism for conveying folded tissues. Background Technology

[0002] In the production of folded tissues, stacks of tissues made up of multiple layers need to be transported between machines. For example, stacks of tissues from a folding machine are sent to a storage rack. Existing stack conveyor systems use belt conveyors, where the stacks are placed on a belt and carried forward. This type of stack conveyor is only suitable for transporting low stacks with fewer layers. If transporting stacks with more layers, the tall stacks are prone to tipping over during transport. Utility Model Content

[0003] The purpose of this invention is to provide a paper stack conveying mechanism capable of conveying a large number of paper stacks.

[0004] This utility model is implemented as follows: The paper stack conveying mechanism includes a slide rail supporting the paper stack, a first pusher member erected to push the paper stack along the slide rail, and a first support member erected at the front side of the paper stack moving in the direction of movement to support the paper stack. The height of the first pusher member and the first support member is sufficient to prevent the paper stack from tipping over. The first pusher member and the first support member are connected to a first reciprocating motion mechanism, which drives the first pusher member and the first support member to reciprocate synchronously along the direction of the slide rail. The first reciprocating motion mechanism is provided with a flipping mechanism that drives the first support member to flip between an upright posture and a lying posture. The first support member in the lying posture is located below the paper stack.

[0005] In the preferred embodiment, the first reciprocating motion mechanism is located below the slide rail, and the first pusher and the first support member rise vertically from the bottom of the slide rail. Above the slide rail, there is a second reciprocating motion mechanism, a second pusher and a second support member. The second reciprocating motion mechanism drives the second pusher and the second support member to move synchronously back and forth along the direction of the slide rail. The second reciprocating motion mechanism is provided with a lifting mechanism that drives the second pusher and the second support member to rise and fall. After being raised, the second pusher and the second support member are higher than the top of the paper stack. After being lowered, the second pusher stands upright on the rear side of the paper stack in the direction of movement to push the paper stack to move along the slide rail. After being lowered, the second support member covers the top of the paper stack to prevent the paper stack from tipping over.

[0006] In the preferred embodiment, the lifting mechanism is divided into two parts: a first lifting mechanism and a second lifting mechanism. The first lifting mechanism drives the second lifting mechanism and the second pusher to lift synchronously, while the second lifting mechanism drives the second support component to lift independently.

[0007] In a preferred embodiment, the second support member has a side profile opposite to the second pusher member, which is close to the front of the paper stack when the second support member covers the top of the paper stack to prevent the paper stack from tipping over.

[0008] The advantages of this invention are that the first pusher and the first support ensure that the paper stack will not tip over during the movement along the slide. Even for tall paper stacks with many layers, it can ensure that the paper stack will not tip over, thus making up for the defect that the existing paper stack conveying mechanism is not suitable for conveying tall paper stacks. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the paper stack passing directly beneath the second pusher. Figure 3 This is a schematic diagram showing the second pusher descending to the rear of the paper stack; Figure 4 This is a schematic diagram showing the second support covering the top of the paper stack and the first support flipped into a lying position; Figure 5 This is a schematic diagram of the paper stack being delivered to downstream equipment. Detailed Implementation

[0010] To facilitate understanding of this invention, a more comprehensive description is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0011] It should be noted that the terms "first" and "second" in this utility model are only used to distinguish names and do not represent specific quantities or order.

[0012] See Figure 1 The paper stack conveying mechanism includes a slide 1 supporting the paper stack, a first pusher 2 erected to move the paper stack along the slide 1, and a first support 3 erected at the front of the paper stack in the direction of movement to support the paper stack. The height of the first pusher 2 and the first support 3 is sufficient to prevent the paper stack from tipping over. The first pusher 2 and the first support 3 are connected to a first reciprocating motion mechanism, which drives the first pusher 2 and the first support 3 to reciprocate synchronously along the slide 1. In this embodiment, the first reciprocating motion mechanism includes a guide rail 4 and a slider 5 slidably connected to the guide rail 4. A synchronous belt (not shown in the figure) drives the slider 5 to reciprocate along the guide rail 4. The first pusher 2 and the first support 3 are mounted on the slider 5. The slider 5 drives the first pusher 2 and the first support 3 to reciprocate.

[0013] See also Figure 1, Figure 4 The first reciprocating motion mechanism includes a flipping mechanism that drives the first support member 3 to flip. The flipping mechanism drives the first support member 3 to flip between an upright posture and a lying posture. The first support member 3 in the lying posture is located below the paper stack. The flipping mechanism in this embodiment includes a cylinder 6, which drives the first support member 3 to reciprocate around the rotating shaft 18.

[0014] For the best implementation, see Figure 1 In this embodiment, the first reciprocating motion mechanism is located below the slide rail 1, and the first pusher 2 and the first support 3 rise vertically from below the slide rail 1. The slide rail 1 can be made in a comb-like shape so that the first pusher 2 and the first support 3 can pass through the slide rail vertically. A second reciprocating motion mechanism, a second pusher 7, and a second support 8 are provided above the slide rail 1. The second reciprocating motion mechanism drives the second pusher 7 and the second support 8 to move synchronously back and forth along the slide rail 1. The second reciprocating motion mechanism in this embodiment includes a guide rail 9 and a sliding member 10 slidably connected to the guide rail 9. A synchronous belt (not shown in the figure) drives the sliding member 10 to slide back and forth along the guide rail 9. The second pusher 7 and the second support 8 are mounted on the sliding member 10. The sliding member 10 drives the second pusher 7 and the second support 8 to move back and forth along the guide rail 9.

[0015] See Figure 1 The second reciprocating motion mechanism includes a lifting mechanism that drives the second pusher 7 and the second support 8 to rise and fall. In this embodiment, the lifting mechanism is divided into two parts: a first lifting mechanism and a second lifting mechanism. Specifically, the first lifting mechanism includes a vertical guide rail 11 fixed to the sliding member 10 and a sliding member 12 slidably connected to the vertical guide rail 11. The second pusher 7 is fixed to the sliding member 12, and a synchronous belt (not shown) drives the sliding member 12 to reciprocate up and down along the vertical guide rail 11. The second lifting mechanism includes a cylinder 13 fixed to the sliding member 12, which independently drives the second support 8 to rise and fall.

[0016] See Figure 2 The raised second pusher 7 and second support 8 are higher than the top of the paper stack 14, allowing the paper stack 14 to pass and stop directly below the second pusher 7 and second support 8. See also Figure 3 After descending, the second pusher 7 stands upright on the rear side of the paper stack 14 in the direction of movement to push the paper stack 14 along the slide 1. See also Figure 4 After it descends, the second support 8 covers the top of the paper stack 14 to prevent the paper stack 14 from tipping over.

[0017] For the best implementation, see Figure 1 The second support member 8 has a side facade 15 opposite to the second pusher member 7. When the second support member 8 is as follows... Figure 4When the cover is placed on top of the paper stack 14, the side facade 15 is close to the front side of the paper stack 14, thereby more reliably preventing the paper stack 14 from tipping over.

[0018] It should be noted that the first pusher component 2 can be a single integrally formed part, or it can be composed of multiple parts arranged at intervals along the width of the paper stack 14 (i.e., in a direction perpendicular to the plane of the drawing). The same structure also applies to the first support component 3, the second pusher component 7, and the second support component 8.

[0019] To avoid mechanical interference between the first pusher component 2, the first support component 3 and the second pusher component 7, the second support component 8, these components can be made into a comb shape, with the comb teeth arranged in a direction perpendicular to the plane of the drawing, and the comb teeth of different components staggered from each other.

[0020] The complete operation process of this embodiment is described below with reference to the accompanying drawings. When the paper stack conveying mechanism is in use, as follows... Figure 1 As shown, the paper stack conveying mechanism is installed between the output end 16 of an upstream device (e.g., a folding machine) and the input end 17 of a downstream device (e.g., a storage rack). In the initial state, the first pusher 2 and the first support 3 are located at the beginning of the slide 1, with both the first support 3 and the first pusher 2 in an upright position, ready to receive the paper stack. The second pusher 7 and the second support 8 are initially positioned directly above a point in the middle of the slide 1. When the upstream device delivers the paper stack 14 to its output end 16, the paper stack 14 is positioned precisely between the first pusher 2 and the first support 3. Then, as... Figure 2 As shown, the sliding member 5 of the first reciprocating motion mechanism drives the first pusher 2 and the first support 3 to move synchronously, and the first pusher 2 pushes the paper stack 14 along the slide rail 1. The first support 3 and the first pusher 2 together support the paper stack 14, preventing the tall paper stack 14 from tipping over. When the paper stack 14... Figure 2 As shown, just after passing directly beneath the second pusher 7, the sliding member 5 of the first reciprocating mechanism immediately stops advancing. Then, the sliding member 12 of the first lifting mechanism drives the second pusher 7 and the cylinder 13 of the second lifting mechanism to descend synchronously until the second pusher 7... Figure 3 As shown, it stands upright on the rear side of the paper stack 14 in the direction of movement, ready to push the paper stack 14. Next, the cylinder 13 of the second lifting mechanism drives the second support member 8 to descend until the second support member 8 is in position... Figure 4 The cover placed on top of the paper stack 14 serves to prevent it from tipping over. It should be noted that the sliding member 12 drives the second pushing member 7 and the cylinder 13 of the second lifting mechanism to descend synchronously, which can be simultaneous with the movement of the cylinder 13 of the second lifting mechanism driving the second support member 8 to descend. After the second support member 8 covers the top of the paper stack 14, the cylinder 6 of the tilting mechanism... Figure 4The first support member 3 is flipped to a lying position. The lying first support member 3 is located below the paper stack 14, clearing a path for the paper stack 14 to continue moving forward. Next, the slider 10 of the second reciprocating mechanism drives the second pusher 7 and the second support member 8 to move synchronously along the slide 1. The second pusher 7 pushes the paper stack 14 to continue moving along the slide 1 until the paper stack 14 is in a lying position. Figure 5 The input terminal 17 of the downstream equipment is shown. During the process of the second pusher 7 pushing the paper stack 14, the second pusher 7 and the second support 8 work together to support the paper stack 14, preventing the tall paper stack 14 from tipping over. After the downstream equipment removes the paper stack 14, the second pusher 7 and the second support 8 return to their original positions. Figure 1 The initial position is shown. On the other hand, when the first support member 3 is as shown... Figure 4 After it tipped over, the first pusher 2 and the first support 3 immediately returned to their original positions. Figure 1 The initial position is shown. At this point, the entire paper stack conveying mechanism has returned to its original position. Figure 1 The initial state shown is in preparation for the next stack of paper.

[0021] During the aforementioned process, the second pusher 7 and the second support 8 serve to temporarily replace the first pusher 2 and the first support 3, allowing the first pusher 2 and the first support 3 to return to their original positions earlier without completing the entire transport of the paper stack, thus preparing for the next stack. Furthermore, the time spent by the second pusher 7 and the second support 8 returning to their original positions overlaps at least partially with the time spent by the first pusher 2 and the first support 3 waiting for and pushing the paper stack, thereby improving the overall efficiency of the paper stack transport mechanism. Alternatively, as another embodiment, the second reciprocating motion mechanism, the second pusher 7, the second support 8, and the related lifting mechanism can be omitted, with the first pusher 2 and the first support 3 completing the entire paper stack transport process. While this reduces efficiency, it simplifies the mechanism.

[0022] It should be noted that, as another embodiment, the second lifting mechanism can be omitted, and the second support member 8 and the second pusher member 7 can be fixed together. After the first lifting mechanism drives the second pusher member 7 to descend, the second support member 8 will just cover the top of the paper stack 14.

[0023] It should be noted that the first reciprocating motion mechanism, the second reciprocating motion mechanism, the tilting mechanism, the first lifting mechanism, and the second lifting mechanism described in this utility model are not limited to the above embodiments, and various existing similar mechanisms can be selected. For example, a motor can be used instead of the cylinder of the tilting mechanism, and the motor drives the first support member 3 to tilt. Alternatively, the first reciprocating motion mechanism, the second reciprocating motion mechanism, the first lifting mechanism, and the second lifting mechanism can be made of gear and rack mechanisms, screw and nut mechanisms, etc., which can achieve the same function.

[0024] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A paper stack conveying mechanism, characterized by: The device includes a slide that supports a stack of paper, a first pusher that moves the stack of paper along the slide, and a first support that stands in front of the stack in the direction of movement to support the stack of paper. The height of the first pusher and the first support is sufficient to prevent the stack of paper from tipping over. The first pusher and the first support are connected to a first reciprocating motion mechanism, which drives the first pusher and the first support to move synchronously back and forth along the slide. The first reciprocating motion mechanism is provided with a flipping mechanism that drives the first support to flip between an upright position and a lying position. The first support in the lying position is located below the stack of paper.

2. The paper stack conveying mechanism as described in claim 1, characterized in that: The first reciprocating motion mechanism is located below the slide rail, and the first pusher and the first support rise vertically from the bottom of the slide rail. Above the slide rail, there is a second reciprocating motion mechanism, a second pusher, and a second support. The second reciprocating motion mechanism drives the second pusher and the second support to move synchronously back and forth along the slide rail. The second reciprocating motion mechanism is equipped with a lifting mechanism that drives the second pusher and the second support to rise and fall. When raised, the second pusher and the second support are higher than the top of the paper stack. When lowered, the second pusher stands upright on the rear side of the paper stack in the direction of movement to push the paper stack along the slide rail. When lowered, the second support covers the top of the paper stack to prevent the paper stack from tipping over.

3. The paper stack conveying mechanism as described in claim 2, characterized in that: The lifting mechanism is divided into two parts: a first lifting mechanism and a second lifting mechanism. The first lifting mechanism drives the second lifting mechanism and the second pusher to lift synchronously, while the second lifting mechanism drives the second support component to lift independently.

4. The paper stack conveying mechanism as described in claim 2, characterized in that: The second support member has a side facade opposite to the second pusher member. When the second support member covers the top of the paper stack, this side facade is close to the front side of the paper stack to prevent the paper stack from tipping over.

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