Clamping and overturning device

Abstract

The utility model discloses a clamping and overturning device which comprises a driving rotating shaft and four groups of paper clamping mechanisms which are fixedly and annularly arranged on the circumferential surface of the driving rotating shaft respectively, each paper clamping mechanism comprises a fixed support fixedly arranged on the driving rotating shaft, at least one pair of first clamping arm and second clamping arm, the first clamping arm and the second clamping arm are movably connected to the fixed support and can be opened and closed oppositely, a guide blocking strip extending in the opening and closing direction is formed on the first clamping arm, and the second clamping arm is provided with a guide blocking strip extending in the opening and closing direction. The second clamping arm is provided with a guide hole for the guide barrier strip to movably penetrate through; the first clamping arm, the second clamping arm and the guide barrier strip in the same group define a clamping opening for paper stacks to enter and exit, and the clamping openings of the four groups of paper clamping mechanisms respectively face four different directions.

Description

Technical Field

[0001] This utility model relates to the technical field of paper processing, and in particular to a clamping and flipping device. Background Technology

[0002] In the production of tissue paper, paper stacks are formed by folding and stacking operations using folding machines. These stacks need to be transferred to downstream slitting and packaging processes. Existing transfer equipment often uses mechanisms like the one described in patent "CN217756005U, Tissue Paper Folding Machine Tilting Mechanism," which consists of two opposing opening and closing clamps. After clamping the incoming paper stack, the clamps perform a 180° flip, transferring the stack to the downstream conveyor belt. This process is repeated to transfer the paper stack. This type of transfer equipment uses a single clamping structure, requiring a reset after each clamping, flipping, and release before the next operation can begin, resulting in low production efficiency and limited cycle time. Furthermore, existing clamping mechanisms suffer from unstable clamping and insufficient positioning accuracy, easily causing paper stacks to shift or tip over. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a clamping and flipping device that can operate continuously, clamp stably, and position accurately.

[0004] To achieve the above objectives, the present invention provides a clamping and flipping device, comprising a drive shaft and four sets of paper clamping mechanisms respectively fixedly arranged around the circumference of the drive shaft. Each set of paper clamping mechanisms includes a fixed support fixed on the drive shaft, and at least one pair of first clamping arms and second clamping arms movably connected to the fixed support and capable of opening and closing in opposite directions. The first clamping arm is formed with a guide bar extending in the opening and closing direction, and the second clamping arm has a guide hole through which the guide bar moves. The first clamping arm, the second clamping arm, and the guide bar in the same set form a clamping opening for paper stacks to enter and exit, and the clamping openings of the four sets of paper clamping mechanisms face four different directions.

[0005] Furthermore, each of the paper clamping mechanisms also includes at least one first clamping drive unit for driving the first clamping arm to move and at least one second clamping drive unit for driving the second clamping arm to move, wherein the first clamping drive unit and the second clamping drive unit respectively drive the first clamping arm and the second clamping arm to open and close in opposite directions.

[0006] Furthermore, each group of paper clamping mechanisms also includes a first support beam and a second support beam, wherein the first support beam and the second support beam are respectively used to connect the tail ends of each first clamping arm and the second clamping arm in the same group.

[0007] Furthermore, the first clamping drive unit and the second clamping drive unit of each group of paper clamping mechanisms are fixedly installed on the fixed support, and the telescopic ends of the first clamping drive unit and the second clamping drive unit in the same group are respectively connected to the first support beam and the second support beam.

[0008] Furthermore, any two adjacent sets of paper clamping mechanisms are arranged at a 90° angle.

[0009] The present invention adopts the above-mentioned solution, and its beneficial effects are as follows: 1) High-efficiency continuous operation: the four sets of paper clamping mechanisms work alternately, reducing idle time and improving production cycle time; 2) Stable clamping: the guide bar and guide hole work together to improve opening and closing accuracy, and the support beam ensures that multiple clamping arms move synchronously; 3) Compact structure: the axially arranged clamping arms and modular design adapt to paper stacks of different sizes; 4) Precise positioning: the guide bar serves as the paper stack stop, ensuring consistent clamping position. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the clamping and flipping device.

[0011] Figure 2 This is a three-dimensional schematic diagram of the clamping and flipping device.

[0012] Figure 3 This is a front view of the clamping and flipping device.

[0013] Figure 4 This is a schematic diagram illustrating the use of the clamping and flipping device.

[0014] Among them, 10-drive shaft, 11-fixed support, 12-first clamping arm, 121-first support beam, 122-first clamping drive unit, 13-second clamping arm, 131-second support beam, 132-second clamping drive unit, 14-guide stop bar, 15-guide hole. Detailed Implementation

[0015] To more fully illustrate this utility model, a detailed description will be provided below in conjunction with the accompanying drawings. The drawings depict preferred embodiments of this utility model. However, it is worth noting that this utility model is not limited to these specific forms and can be implemented in various ways. These embodiments are provided to enable the reader to gain a deeper understanding of this utility model.

[0016] As attached Figure 1-4 As shown, in this embodiment, a clamping and flipping device includes a drive shaft 10 and four sets of paper clamping mechanisms respectively fixedly arranged on the circumference of the drive shaft 10. The drive shaft 10 is externally connected to a drive device (such as a servo motor, not shown in the figure). Under the drive of the drive device, the drive shaft 10 performs a fixed-axis rotation.

[0017] In this embodiment, each paper clamping mechanism includes a fixed support 11 fixed on the drive shaft 10, and at least one pair of first clamping arms 12 and second clamping arms 13 movably connected to the fixed support 11 and capable of opening and closing in opposite directions. Preferably, each paper clamping mechanism has two fixed supports 11 respectively fixed at both ends of the drive shaft 10 (they can be fixed by screws or other means, which are not specifically limited here; those skilled in the art can choose an appropriate installation method as needed). The two fixed supports 11 in the same group jointly support each first clamping arm 12 and second clamping arm 13. In addition, each paper clamping mechanism also includes at least one first clamping drive unit 122 for driving the first clamping arm 12 and at least one second clamping drive unit 132 for driving the second clamping arm 13. The first clamping drive unit 122 and the second clamping drive unit 132 respectively drive the first clamping arm 12 and the second clamping arm 13 to open and close in opposite directions.

[0018] In this embodiment, each paper clamping mechanism preferably has several first clamping arms 12 arranged along the axial direction of the drive shaft 10 and several second clamping arms 13 arranged along the axial direction of the drive shaft 10. Each first clamping arm 12 and each second clamping arm 13 are arranged in parallel opposite directions, so that the first clamping arms 12 and the second clamping arms 13 correspond to each other to perform opposite opening and closing actions, so as to clamp or loosen the paper stack.

[0019] In this embodiment, each paper clamping mechanism further includes a first support beam 121 and a second support beam 131. The first support beam 121 and the second support beam 131 are respectively used to connect the tail ends of each first clamping arm 12 and the second clamping arm 13 in the same group. That is, the first support beam 121 and the second support beam 131 both extend parallel to the axial direction of the drive shaft 10. The tail ends of each first clamping arm 12 are connected to the first support beam 121 at equal intervals by means of screw fixing or the like. Similarly, the tail ends of each second clamping arm 13 are connected to the second support beam 131 at equal intervals by means of screw fixing or the like.

[0020] In this embodiment, the first clamping drive unit 122 and the second clamping drive unit 132 of each paper clamping mechanism are fixedly mounted on the fixed support 11, and the telescopic ends of the first clamping drive unit 122 and the second clamping drive unit 132 in the same group are respectively connected to the first support beam 121 and the second support beam 131. Thus, driven by the first clamping drive unit 122 and the second clamping drive unit 132, the first support beam 121 and the second support beam 131 are driven to move closer or further away from each other, thereby synchronously driving the first clamping arm 12 and the second clamping arm 13 to move, realizing the opening and closing action of the first clamping arm 12 and the second clamping arm 13 in the same group.

[0021] In this embodiment, the first clamping arm 12 is formed with a guide bar 14 extending in the opening and closing direction. The guide bar 14 is arranged perpendicularly to the first clamping arm 12 and extends towards the second clamping arm 13. The second clamping arm 13 has a guide hole 15 through which the guide bar 14 moves. During the opening and closing of the first clamping arm 12 and the second clamping arm 13, the guide bar 14 and the guide hole 15 work together to guide the movement and improve the stability of the opening and closing action. Furthermore, to reduce manufacturing costs, not all first clamping arms 12 in this embodiment need to be equipped with a guide bar 14. Depending on the actual axial span and clamping conditions, a guide bar 14 can be provided at intervals of a certain number of first clamping arms 12. Correspondingly, a guide hole 15 matching the guide bar 14 is provided at intervals of a certain number of second clamping arms 13. The specific number is not specifically limited here; those skilled in the art can set it as needed.

[0022] In this embodiment, the first clamping arm 12, the second clamping arm 13, and the guide bar 14 in the same group form a clamping opening for the paper stack to enter and exit. The guide bar 14 serves as a stop for the paper stack to be fed into the clamping opening. That is, after the paper stack is aligned with the feeding opening, the side of the paper stack abuts against the guide bar 14, achieving a stopping and positioning effect. In addition, the clamping openings of the four sets of paper clamping mechanisms face four different directions, and any two adjacent sets of paper clamping mechanisms are arranged at 90°. Therefore, when the drive shaft 10 rotates 90°, the four sets of paper clamping mechanisms switch rotations once.

[0023] For ease of explanation, the following is in conjunction with the appendix. Figure 4 Further explanation of the clamping and flipping device.

[0024] Specifically, the clamping and flipping device is applied between two sets of conveyor belts. The upstream conveyor belt carries paper stacks and feeds them into the clamping and flipping device in sequence. At this time, the clamping jaws of the first set of paper clamping mechanisms, which are located on the left, are aligned with the upstream conveyor belt. This continues until a paper stack is fed into the clamping jaws. The first clamping drive unit 122 and the second clamping drive unit 132 of the same set drive the first clamping arm 12 and the second clamping arm 13 to perform opposing clamping actions to clamp the paper stack. Then, the drive shaft 10 is rotated 90° clockwise, causing the first set of paper clamping mechanisms with the paper stack to flip to the upper position. Similarly, the clamping jaws of the empty second set of paper clamping mechanisms are simultaneously flipped to the left position to repeat the paper stack feeding and clamping operation. Immediately afterwards, the drive shaft 10 is rotated 90° clockwise a second time, causing the first set of paper clamping mechanisms with the paper stack to flip to the upper position. The first set of paper clamping mechanisms flips to the right, and the second set of paper clamping mechanisms flips to the top. The first clamping arm 12 and the second clamping arm 13 of the first set of paper clamping mechanisms, positioned on the right, are released in opposite directions under the drive of the first clamping drive unit 122 and the second clamping drive unit 132 of the same group. The paper stack is then supported by the downstream conveyor belt and removed from the clamping position. Simultaneously, the third set of paper clamping mechanisms rotates to the left to repeat the paper stack feeding and clamping operation. Finally, the drive shaft 10 rotates 90° clockwise three times, causing the first set of paper clamping mechanisms to switch to the bottom position, the second set to the top position, and the third set to the right to complete the paper stack release and removal operation. The fourth set of paper clamping mechanisms then switches to the left to repeat the paper stack feeding and clamping operation. In summary, by repeating the above steps, continuous flipping and transfer of the paper stack is achieved, effectively improving production cycle time and efficiency.

[0025] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A clamping and flipping device, characterized in that: The device includes a drive shaft (10) and four sets of paper clamping mechanisms that are fixedly arranged around the drive shaft (10). Each set of paper clamping mechanisms includes a fixed support (11) fixed on the drive shaft (10), and at least one pair of first clamping arms (12) and second clamping arms (13) that are movably connected to the fixed support (11) and can open and close in opposite directions. The first clamping arm (12) is formed with a guide bar (14) extending in the opening and closing direction, and the second clamping arm (13) is provided with a guide hole (15) through which the guide bar (14) moves. The first clamping arm (12), the second clamping arm (13) and the guide bar (14) in the same set form a clamping opening for paper stacks to enter and exit, and the clamping openings of the four sets of paper clamping mechanisms face four different directions.

2. The clamping and flipping device according to claim 1, characterized in that: Each of the paper clamping mechanisms further includes at least one first clamping drive unit (122) for driving the first clamping arm (12) to move and at least one second clamping drive unit (132) for driving the second clamping arm (13) to move, wherein the first clamping arm (12) and the second clamping drive unit (132) respectively drive the first clamping arm (12) and the second clamping arm (13) to open and close in opposite directions.

3. The clamping and flipping device according to claim 2, characterized in that: Each group of paper clamping mechanisms also includes a first support beam (121) and a second support beam (131), wherein the first support beam (121) and the second support beam (131) are respectively connected to the tail ends of each first clamping arm (12) and second clamping arm (13) in the same group.

4. The clamping and flipping device according to claim 3, characterized in that: The first clamping drive unit (122) and the second clamping drive unit (132) of each group of paper clamping mechanisms are fixedly installed on the fixed support (11), and the telescopic ends of the first clamping drive unit (122) and the telescopic ends of the second clamping drive unit (132) in the same group are respectively connected to the first support beam (121) and the second support beam (131).

5. The clamping and flipping device according to claim 1, characterized in that: Any two adjacent paper clamping mechanisms are arranged at a 90° angle.

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