Novel up-and-down limiting structure for lifting of paper pile bedplate

Abstract

The utility model provides a novel vertical limiting structure for lifting of a paper pile platen. The up-and-down limiting structure adopts a double-chain-wheel and double-chain mode, and the double chain wheels are the lifting chain wheel and the limiting chain wheel; the double chains are a lifting chain and a limiting stroke chain. According to the up-down limiting structure, the lifting chain is driven to ascend or descend through the work of the lifting chain wheel and the limiting chain wheel, so that the limiting stroke chain moves along with the lifting chain, and the limiting contact on the limiting stroke chain and the three proximity photoelectric points preset on the photoelectric induction control device can generate induction; therefore, the preset ascending, speed reduction and stopping positions of the paper pile bedplate are accurately controlled. The up-and-down limiting structure is installed in an outer cover of the paper collecting machine and can be prevented from being collided in the transportation process, and normal operation of the structure is not affected. The upper and lower limiting structures are simple to process, practical, wear-resistant and free of replacement in production, and the production cost of products is reduced.

Description

Technical Field

[0001] This utility model relates to the field of paper feeding machine technology, and in particular to a novel upper and lower limit structure for lifting and lowering a paper stacking platform. Background Technology

[0002] Existing traditional upper and lower limit structures use limit switches installed at predetermined upper and lower limit positions on the wall panel. For example... Figure 1 As shown. When the paper stack platform rises to the predetermined height, it touches limit switch 1 and stops rising. Simultaneously, it moves downwards rapidly. When it reaches limit switch 2, the descent speed of the paper stack platform decreases. When it moves downwards to the predetermined lower limit limit switch 3, the paper stack platform stops. The next batch of paper stacks then enters the paper stack platform for the next round of work.

[0003] This upper and lower limit structure has several drawbacks. First, because the limit switch and the paper stack plate operate on a contact-based opening mechanism, the contact arm of the limit switch will deform over time, leading to inaccurate positioning. Second, frequent contact can cause the mounting screws to loosen, resulting in inaccurate positioning, or the paper stack plate may damage the limit switch, causing mechanical failure. Third, because there is no protection at the mounting point, the limit switch is easily damaged during transportation. Utility Model Content

[0004] In response to the technical problems mentioned in the background art, this utility model provides a novel upper and lower limit structure for lifting and lowering a paper stacking platform.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a novel upper and lower limiting structure for lifting a paper stacking platform. The upper and lower limiting structure includes two lifting sprockets, two limiting sprockets, and a photoelectric sensing control device. The two lifting sprockets are respectively installed at both ends of the outer cover; lifting chains are fitted on the two lifting sprockets, and the lifting chains are used to connect the paper stacking platform; limiting travel chains are fitted on the two limiting sprockets.

[0007] Preferably, the limiting travel chain is provided with limiting contacts.

[0008] Preferably, one end of the limiting travel chain is fitted onto one of the lifting sprockets.

[0009] Preferably, the photoelectric sensing control device has a number of proximity photoelectric points pre-set.

[0010] Preferably, there are three proximity photoelectric points.

[0011] The significant advantages of this invention are as follows: This invention provides a novel upper and lower limiting structure for lifting and lowering a paper stacking platform. The upper and lower limiting structure employs a double-sprocket, double-chain configuration. The double sprockets consist of a lifting sprocket and a limiting sprocket; the double chains consist of a lifting chain and a limiting travel chain. The lifting and limiting sprockets work to drive the lifting chain upwards or downwards, causing the limiting travel chain to move accordingly. The limiting contacts on the limiting travel chain and three preset proximity photoelectric points on the photoelectric sensing control device are sensed, thus precisely controlling the paper stacking platform at preset rising, decelerating, and stopping positions. This upper and lower limiting structure is installed inside the outer casing of the paper receiving machine, preventing damage during transportation and ensuring normal operation. This invention's upper and lower limiting structure is simple to manufacture, practical, and wear-resistant, eliminating the need for replacement during production and reducing production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the upper and lower limit structure of the prior art.

[0013] Figure 2 This is a schematic diagram of the upper and lower limit structure of the novel paper stacking platform lifting mechanism according to an embodiment of this utility model.

[0014] Legend: 01, Limit switch 1; 02, Limit switch 2; 03, Limit switch 3; 04, Paper stack lifting platform; 1, Outer cover; 2, Lifting sprocket; 3, Photoelectric sensor control device; 4, Limit sprocket; 5, Lifting chain; 6, Limit travel chain; 7, Limit contact; 8, Proximity photoelectric point. Detailed Implementation

[0015] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0016] Example 1

[0017] like Figure 2 As shown, this embodiment provides a novel upper and lower limit mechanism for paper stacker lifting. The upper and lower limit structure is installed inside the outer casing 1 of the paper receiving machine, specifically including two lifting sprockets 2, two limit sprockets 4, and a photoelectric sensing control device 3. The two lifting sprockets 2 are respectively installed at both ends of the outer casing 1; lifting chains 5 are sleeved on the two lifting sprockets 2, and the lifting chains 5 are used to connect the paper stacking platform; the two limit sprockets 4 are sleeved with limit travel chains 6. Under the action of the lifting sprockets 2 and the limit sprockets 4, the lifting chains 5 move up or down, causing the limit travel chains 6 to rotate along with them, driving the paper stacking platform to move up or down.

[0018] In this embodiment, one end of the limiting travel chain 6 is fitted onto one of the lifting sprockets 2, and the limiting travel chain 6 is provided with a limiting contact 7. The limiting travel chain 6 rotates as the lifting chain 5 operates, and the limiting contact 7 is sensed when it approaches the photoelectric sensing control device 3, indicating that the paper stacking platform has reached the preset working position during operation.

[0019] In this embodiment, the photoelectric sensing control device 3 is equipped with a number of proximity photoelectric points 8. The photoelectric sensing control device 3 has three proximity photoelectric points 8 set at preset distances, each representing a different position on the paper stacking platform. These three proximity photoelectric points 8 precisely control the preset rising, decelerating, and stopping positions of the paper stacking platform during operation.

[0020] This embodiment provides a novel upper and lower limiting structure for lifting and lowering a paper stacking platform. This novel upper and lower limiting structure employs a double-sprocket, double-chain configuration. The double sprockets consist of a lifting sprocket and a limiting sprocket; the double chains consist of a lifting chain and a limiting travel chain. The upper and lower limiting structure, through the operation of the lifting and limiting sprockets, drives the lifting chain to rise or fall, causing the limiting travel chain to move accordingly. The limiting contacts on the limiting travel chain and the three preset proximity photoelectric points on the photoelectric sensing control device are sensed, thereby precisely controlling the paper stacking platform at the preset rising, falling, and stopping positions. This upper and lower limiting structure is installed inside the outer casing of the paper receiving machine, preventing damage during transportation and ensuring normal operation. This novel upper and lower limiting structure is simple to manufacture, practical, and wear-resistant, eliminating the need for replacement during production and reducing production costs.

[0021] The working principle of this utility model is as follows: A paper stacking platform is installed on a lifting chain 5, and a limit travel chain 6 is fitted onto two limit sprockets 4 and one lifting sprocket 2. Under the action of the lifting sprocket 2 and the limit sprocket 4, the lifting chain 5 moves up or down, causing the limit travel chain 6 to rotate along with it, driving the paper stacking platform to move up or down. When the limit contact 7 set on the limit travel chain 6 approaches the three preset proximity photoelectric points 8 on the photoelectric sensing control device 3 in sequence, the three proximity photoelectric points 8 are sensed in sequence, indicating that the paper stacking platform has reached the preset working position during operation.

[0022] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A novel upper and lower limit structure for lifting and lowering a paper stacking platform, installed inside the outer casing of a paper receiving machine, characterized in that... The upper and lower limiting structure includes two lifting sprockets, two limiting sprockets, and a photoelectric sensing control device. The two lifting sprockets are respectively installed at both ends of the outer cover. Lifting chains are fitted on the two lifting sprockets, and the lifting chains are used to connect the paper stacking platform. Limiting travel chains are fitted on the two limiting sprockets.

2. The novel upper and lower limiting structure for lifting and lowering a paper stacking platform as described in claim 1, characterized in that, The limiting travel chain is equipped with limiting contacts.

3. The upper and lower limiting structure for the lifting and lowering of the novel paper stacking platform as described in claim 1, characterized in that, One end of the limiting travel chain is fitted onto one of the lifting sprockets.

4. The upper and lower limiting structure for the lifting and lowering of the novel paper stacking platform as described in claim 1, characterized in that, The photoelectric sensing control device has several proximity photoelectric points pre-set.

5. The novel upper and lower limiting structure for lifting and lowering a paper stacking platform as described in claim 4, characterized in that, There are three proximity photoelectric points.

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