CN202912446U - Surplus-free bobbin paper automatic splicing apparatus - Google Patents

Abstract

The utility model discloses an automatic splicing device without remaining paper trays, which comprises a main tray paper holder, a paper pulling roller, a paper storage device, a reversing roller, an auxiliary tray paper holder, a first sensor, a second sensor, a PLC and a splicing mechanism A third sensor is further arranged between the main paper tray and the first reversing roller, and the output end of the third sensor is connected to the input end of the PLC. The third sensor is a reflective photoelectric switch. The utility model has a simple structure. A sensor for monitoring the exhaustion of the paper is set between the paper holder and the reversing roller, and the PLC is used to control the speed of the dragging roller to prepare for the splicing of the paper, so that the remaining paper The amount reaches the minimum, which greatly reduces the waste of paper trays.

Description

An automatic splicing device without remaining paper

technical field

The utility model relates to an automatic splicing device for a tray of paper, in particular to an automatic splicing device for no remaining trays of paper.

Background technique

In the production process, the existing automatic splicing device for paper trays is shown in Figure 1, which includes a main tray paper holder 2, an auxiliary tray paper holder 1, a first sensor 10, a second sensor 6, a PLC and a splicing mechanism 7. One side of the paper tray 2 and the auxiliary tray 1 is respectively provided with reversing rollers 3, the splicing mechanism 7 is arranged downstream of the main tray 2 and the auxiliary tray 1, and the downstream of the splicing mechanism 7 is provided with a drag roller 8. A paper stocker 9 is arranged under the paper pulling roller 8. The first sensor 10 is set on the side of the paper pulling roller 8 to detect the rotation speed of the paper pulling roller. The second sensor 6 is set on the paper of the main tray. On the side, it is used to detect the rotating speed of the paper on the main tray, and the PLC control module is connected to the rotating motor and the splicing mechanism 7 for controlling the dragging roller 8, and the PLC control module is used to collect the rotating speed of the paper on the main tray 2 and calculate the The diameter of the currently used coil paper, when the size of the coil paper in the main tray 2 is smaller than the first set value, the PLC control module starts the dragging roller 8, and accelerates the dragging roller 8. When the linear speed of the main tray 2 reaches the first When the second set value indicates that the tray paper of the main tray paper holder 2 is used up, the PLC controls to start the splicing mechanism 7 to complete the splicing action, so that the auxiliary tray paper holder 1 can supply paper. However, in actual production, when the monitoring value of the second sensor 6 reaches the second set value, the rotation speed is relatively high, and it is often impossible to start splicing just when the paper tray of the main tray paper holder is just used up, so a large amount of paper trays will often be caused. The remaining, generally 10-20 meters per tray, so that the accumulated trays of each machine cause a lot of waste. Increased consumption and cost.

Utility model content

The purpose of this utility model is to provide an automatic splicing device with no remaining coils, so that the automatic splicing control of the coils is more precise and the residual amount is minimized.

The utility model adopts the following technical solutions:

An automatic splicing device with no remaining trays, comprising a main tray paper holder, a paper dragging roller, a paper stocker, a reversing roller, an auxiliary tray paper holder, a first sensor, a second sensor, a PLC and a splicing mechanism. A third sensor is further arranged between the paper tray and the first reversing roller, and the output end of the third sensor is connected to the input end of the PLC.

The third sensor is a reflective photoelectric switch.

The utility model has a simple structure. A sensor for monitoring the exhaustion of the paper is set between the paper holder and the reversing roller, and the PLC is used to control the speed of the dragging roller to prepare for the splicing of the paper, so that the remaining paper The amount reaches the minimum, which greatly reduces the waste of paper trays.

Description of drawings

Fig. 1 is the structural representation of left baffle plate described in the utility model;

Fig. 2 is a structural schematic diagram of the front baffle described in the present invention.

Detailed ways

As shown in the figure, an automatic splicing device without remaining trays includes a main tray 2, an auxiliary tray 1, a first sensor 10, a second sensor 6, a PLC, a drag roller 8, and a splicing mechanism 7. One side of the main tray paper holder 2 and the auxiliary tray paper holder 1 is respectively provided with a reversing roller 3, the splicing mechanism is arranged on the downstream of the main tray paper holder 2 and the auxiliary tray paper holder 1, and the downstream of the splicing mechanism 7 is provided with the dragging mechanism 7. Paper roll 8, paper stocker 9 is arranged at the back of dragging roll 8, described first sensor 10 is arranged on the side of dragging roll, second sensor 6 is arranged on the side of main tray paper holder 2, and first, The output end of the second sensor is connected to the input end of the PLC, and the output end of the PLC is connected to the input end of the splicing mechanism 7 . A third sensor 5 is further arranged between the main tray 2 and the first reversing roller 3 , and the output end of the third sensor 5 is connected to the input end of the PLC.

When working normally, use the auxiliary tray paper holder 1 to feed paper, and the first sensor 6 detects the pulse signal of the code disc of the main tray paper holder 2. Since the paper feeding rate of the paper tray is constant during normal paper supply, when the paper tray paper When the number decreases, the rotation speed of the paper tray will increase to maintain the paper feeding speed of the paper tray. At this time, the number of pulses detected by the second sensor 6 per unit time will increase. At this time, when the number of pulses reaches the first set value, The PLC will control the dragging roller 8 to accelerate the rotation to store the coils of paper to prevent the supply of the coils from being interrupted during the next coil splicing action. When the rotation speed of the dragging roller 8 increases, the rotation speed of the main tray will continue to increase. , the PLC detects that the pulse number of the second sensor 6 continues to increase. When the PLC receives the pulse number of the second sensor 6 and reaches the second set value, it indicates that the paper tray is about to be used up at this time. At this time, the PLC controls the dragging roller 8 to decelerate Action, to prepare for the coil paper splicing action. When it is working normally, the third sensor 5 can normally receive the signal returned by being blocked by the coil paper. At this time, the PLC receives the high level sent by the third sensor 5. When the paper tray of the main tray tray 2 is used up, the paper will be torn off automatically. At this time, the second sensor 5 does not detect the return signal. At this time, the PLC receives a low level, indicating that the main tray tray paper is used up, and the PLC Send a control signal to the splicing mechanism 7, and the splicing mechanism 7 controls the action of the cylinder 4 to complete the splicing of the paper trays. At this time, the remaining amount of the paper trays on the main tray can basically be ignored. It greatly reduces the remaining problems of the splicing of the disc paper.

The unit time described in the utility model is the period value of the single or multiple pulse numbers monitored by the first sensor 10, and after the first set value and the second set value are fine-tuned by PLC control according to specific conditions, it can be used The splicing of disc paper can achieve the minimum remaining amount.

Claims (2)

1. a nothing remains the obbbin automatic splicing device, comprise master paper frame, drag paper bowl, paper storage device, reversing roller, auxiliary obbbin frame, first sensor, the second sensor, PLC and splicing body, its feature exists: also be provided with the 3rd sensor between described master paper frame and the first reversing roller, the mouth of the 3rd sensor connects the input end of PLC.

2. according to claim 1 without residue obbbin automatic splicing device, it is characterized in that: described the 3rd sensor is reflective photoelectric switch.

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