Conveying channel with chain wheel overload protection device

Abstract

The invention relates to the technical field of printing equipment, in particular to a conveying channel with a chain wheel overload protection device, which comprises a conveying channel, the conveying channel is composed of an arc-shaped plate and end plates arranged at the two ends of the arc-shaped plate, a chain wheel is arranged on the conveying channel, a chain is arranged on the chain wheel, a paper pushing rod is arranged on the chain, and a baffle is arranged beside the chain. And a chain wheel overload protection device is arranged on the chain wheel. According to the conveying channel, the slope design is achieved through the arc-shaped plates, automatic production of books of special specifications such as octobooks or transverse books is completed, paper is prevented from being detained or disengaged from the end plates, the blocking risk is reduced, the paper conveying continuity is improved, and when the conveying channel suddenly stops, the slope structure can prevent the paper from continuously moving forwards due to inertia; according to the chain wheel overload protection device, chain deformation caused by overload is reduced, the maintenance cost is reduced, the safety is improved, and the equipment failure rate caused by blockage or chain wheel overload is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment. Background Art

[0002] In the process of book printing, with the improvement of the automation level, the transportation of paper is often carried out through a fully automatic conveying channel. The existing paper conveying channels are mostly straight connecting channels, which can only produce conventional books. For special specification books such as octavo or landscape format, during the production process, it is necessary to manually turn the paper by 90 degrees. At present, the conveying channel cannot realize the automatic production operation of this link. In addition, when using chain drive to transport paper, the phenomenon of sprocket overload occurs from time to time. Sprocket overload not only causes equipment failures, but also shortens the service life of the equipment and even leads to safety accidents. Summary of the Invention

[0003] In order to overcome the problems that the paper in the traditional conveying channel is easy to block and stay, manual operation is required, and sprocket overload affects equipment failures, the present invention provides a conveying channel with a sprocket overload protection device.

[0004] The technical solution adopted by the present invention to achieve the above object is as follows:

[0005] A conveying channel with a sprocket overload protection device, the conveying channel is inclined inwardly and the middle part is an arc-shaped plate, and both ends are end plates. The connection side between the end plate and the arc-shaped plate is inclined, and the other side of the end plate is horizontal. A sprocket is arranged on the conveying channel, the sprocket is connected to a motor, a paper pushing rod is installed on the chain, a baffle is arranged on one side of the chain, and a sprocket overload protection device is arranged on the sprocket.

[0006] A guide rail is arranged on the conveying channel, a notch is arranged on the guide rail, and the chain is located in the notch.

[0007] Preferably, there are multiple paper pushing rods and they are evenly distributed on the chain.

[0008] Preferably, the sprocket is connected to the motor through a sprocket shaft. The sprocket overload protection device includes a fixed seat key-connected to the sprocket shaft. A groove is arranged on the fixed seat. The fixed seat is arranged adjacent to the sprocket. A through hole corresponding to the position of the groove is arranged on the sprocket. A ball is arranged in the through hole. A flange sleeve is arranged at the other end of the sprocket, and the flange sleeve is connected with a spring.

[0009] Preferably, there are two grooves, and the distances between the two grooves and the center of the fixed seat are different.

[0010] Preferably, the sprocket protection device further includes a proximity switch, and the proximity switch is arranged at the front end of the flange sleeve.

[0011] The beneficial effects of the present invention are as follows:

[0012] The conveying channel of the present invention realizes the slope design through the arc plate, and can complete the automated production of special specification books such as octavo or landscape format books. When the conveying channel suddenly stops, the slope structure can prevent the paper from continuously moving forward due to inertia, making it stay in place, avoiding paper scattering or unevenness. Moreover, the conveying channel is inclined inward, and affected by the centrifugal force, the paper is not easily removed from the conveying channel, reducing the risk of blockage and improving the continuity of paper conveying; the sprocket overload protection device of the present invention reduces the chain deformation caused by overload, reduces the maintenance cost, improves the safety, and reduces the equipment failure rate caused by blockage or sprocket overload. Brief Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention;

[0014] Figure 2 is the overall structural schematic diagram of the embodiment of the present invention;

[0015] Figure 3 is Figure 2 the partial enlarged schematic diagram of.

[0016] In the figure, 1, conveying channel; 2, chain; 3, paper pusher; 4, guide rail; 5, baffle; 6, support column; 7, sprocket overload protection device; 701, sprocket shaft; 702, spring; 703, fixed seat; 704, groove; 705, through hole; 706, ball; 707, sprocket; 708, flange sleeve; 709, proximity switch; 8, motor; 9, arc plate; 10, end plate; 11, landscape format;. Detailed Embodiment

[0017] As Figure 1 , 2 shown, the embodiment of the present invention provides a conveying channel with a sprocket overload protection device. The conveying channel is inclined inward so that the paper is not easily removed from the conveying channel during transportation due to the centrifugal force. The conveying channel 1 is composed of an arc plate 9 and end plates 10 arranged at both ends of the arc plate 9. The side where the end plate is connected to the arc plate is inclined, and the other side is horizontally arranged. The overall shape of the conveying channel is "S". If the conveying channel suddenly stops during operation, since the conveying channel realizes the slope design through the arc plate, the slope structure prevents the paper from continuously moving forward due to inertia, making it stay in place, avoiding paper scattering or unevenness.

[0018] A sprocket wheel 707 is arranged on the conveying channel 1. The sprocket wheel 707 is connected to the motor 8 through a sprocket shaft 701. A chain 2 is arranged on the sprocket wheel 707. A paper pusher rod 3 is arranged on the chain 2. There are multiple paper pusher rods 3 and they are evenly distributed. A baffle 5 is arranged beside the chain 2. The baffle 5 is used to hold the bottom of the paper. The chain 2 encloses a closed loop and is divided into two reverse-running sections inside the loop by the baffle 5, forming a two-way transmission path. A sprocket overload protection device 7 is arranged on the sprocket wheel 707. The conveying channel 1 stands on the ground through a support column 6.

[0019] The conveying channel 1 is also provided with a guide rail 4. The guide rail 4 is provided with a notch. A part of the chain 2 is placed in the notch, that is, the chain 2 is installed by passing through the guide rail 4. The guide rail 4 restricts part of the freedom degree of the chain 2 to ensure that the chain 2 runs along a predetermined path and prevent deviation.

[0020] As Figure 3 shown, the sprocket overload protection device 7 includes a fixed seat 703 key-connected to the sprocket shaft 701. A groove 704 is arranged on the fixed seat 703. There are two grooves 704 and the distances from the two grooves 704 to the center of the fixed seat 703 are different. The fixed seat 703 is arranged adjacent to the sprocket wheel 707. A through hole 705 corresponding to the position of the groove 704 is arranged on the sprocket wheel 707. In this embodiment, the groove 704 is specifically a hemispherical shape and the through hole 705 is specifically a circular shape. A ball 706 is arranged in the through hole 705. A flange sleeve 708 is arranged at the other end of the sprocket wheel 707. The flange sleeve 108 is in close contact with the sprocket wheel 707 and the fixed seat 703. A spring 702 is arranged between the flange sleeve 708 and the end of the sprocket shaft 701. In this embodiment, the spring 702 is specifically a disc spring. The spring 702 plays a pressing role and the flange sleeve 708 is movably connected to the sprocket shaft 701.

[0021] The embodiment of the present invention can complete the automated production of special specification books such as octavo or sixteen - opening landscape format books. The perfect binding directions of octavo and sixteen - opening landscape format books are both along the short side. In this embodiment, if the octavo size is 315mm×440mm and the sixteen - opening landscape format size is 220mm×315mm, then the perfect binding direction of the octavo is along the 315mm side and the perfect binding direction of the sixteen - opening landscape format is along the 220mm side.

[0022] Working principle:

[0023] The motor 8 drives the sprocket 707 to rotate. The sprocket 707 drives the chain 2 and the paper pusher 3 on the chain 2 to move in a cycle. After the paper enters the conveying channel 1 from the end plate 10, it will be driven by the paper pusher 3 to move along the arc-shaped plate 9 to the outlet of the conveying channel 1. When the actual working condition exceeds the design limit and the sprocket 707 is overloaded, it may cause faults such as material breakage, mechanical jamming, and lubrication failure, resulting in the sprocket getting stuck due to a fault. However, the motor 8 still drives the sprocket shaft 701 and the fixed seat 703 to rotate, causing the groove 704 to be misaligned with the through hole 705, so that the ball 706 pops out from the groove 704 and the through hole 705, pushing the flange sleeve 708. The flange sleeve 708 hits the proximity switch 709, and the proximity switch 709 controls the motor 8 to stop running. Since the distances between the two grooves 704 and the center of the fixed seat 703 are different, after the overload occurs, the ball 706 will not return to the groove 704 before the flange sleeve 708 hits the proximity switch 709. After the overload fault of the sprocket 707 is eliminated, the staff manually resets the ball 706, and the flange sleeve 708 leaves the proximity switch 709 and abuts against the sprocket 707 under the action of the spring 702.

[0024] This invention is described through embodiments. Those skilled in the art know that without departing from the spirit and scope of this invention, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this invention. Therefore, this invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of this invention.

Claims

1. A conveying channel with a sprocket overload protection device, characterized in that, The conveying channel (1) is inclined inwardly, with an arc-shaped plate (9) in the middle and end plates (10) at both ends. The end plates (10) are inclinedly installed on the connecting side with the arc-shaped plate (9), and the other side of the end plates (10) is horizontally arranged. A sprocket (707) is provided on the conveying channel (1), and the sprocket (707) is connected to a motor (8). A paper-pushing rod (3) is installed on the chain (2), a baffle (5) is provided on one side of the chain (2), and a sprocket overload protection device (7) is provided on the sprocket (707).

2. The conveying channel with a sprocket overload protection device according to claim 1, characterized in that A guide rail (4) is provided on the conveying channel (1), and a notch is provided on the guide rail (4). The chain (2) is located in the notch.

3. The conveying channel with a sprocket overload protection device according to claim 1, characterized in that, There are multiple paper-pushing rods (3) and they are evenly distributed on the chain (2).

4. The conveying channel with a sprocket overload protection device according to claim 1, characterized in that, The sprocket (707) is connected to the motor (8) through a sprocket shaft (701). The sprocket overload protection device (7) includes a fixed seat (703) key-connected to the sprocket shaft (701). A groove (704) is provided on the fixed seat (703). The fixed seat (703) is arranged adjacent to the sprocket (707). A through hole (705) corresponding to the position of the groove (704) is provided on the sprocket. A ball (706) is provided in the through hole (705). A flange sleeve (708) is provided at the other end of the sprocket, and the flange sleeve (708) is connected to a spring (702).

5. The conveying channel with a sprocket overload protection device according to claim 4, characterized in that, There are two grooves (704), and the distances between the two grooves (704) and the center of the fixed seat (703) are different.

6. The conveying channel with a sprocket overload protection device according to claim 4, characterized in that, The sprocket protection device (7) further includes a proximity switch (709), and the proximity switch (709) is arranged at the front end of the flange sleeve (708).

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