The inspection and operation of the single facer is divided into the two different post responsibilities including captain and the deputy, the captain mainly master the boot, check the operators, machine, ring, and then the test run. The deputy is mainly to prepare materials, understand orders, check paper and glue. Finally loading paper, threading paper, and start cardboard production process.
1、Responsibilities of the Captain
Starting up includes: turn on the power supply and glue pump, let the glue into the single facer; Open vacuum pressure, whether positive or negative pressure, corrugated paper should be adsorbed on the corrugated roller; Turn on steam pressure to allow steam to pass through and warm up.
2) Check up Operators
The captain first needs to check whether the personnel's dress is in line with the company's requirements, whether to wear a work uniform, whether to wear a helmet, women having long hair should betied, not to wear skirts, high heels, etc.; Secondly is to should check themental state of personnel, cannot fatigue works; Thirdly is to check the knowledge and skills, whether the new staff training on the post, do not understand the safe operation.
3) Equipment Appearance Inspection
Check the fastening degree of each fastener of the equipment. How's the cleaning going? In particular, is there any dirt onthe roller? Are there any foreign matters?
4) Equipment Pressure Inspection
The most important thing to check the equipment is to see if the pressure meets the production requirements. For example, vacuum pressure is generally 6-9kg/cm2, steam pressure is generally 8kg/cm2, oil pressure is generally 40-60kg, and suction pressure is generally 500-1000m3/h.
5) Equipment Temperature Inspection
Equipment temperature inspection includes preheating cylinder, corrugated roller, pressure roller temperature inspection. These places are all steam, need to check the temperature whether inplace. There are two ways to detect temperature, including infrared thermometer and contact thermometer, which is more accurate relatively.
What temperature is required? Mainly on two parameters.
First, the comparison of steam pressure with temperature. This comparison can be seen if any malfunction inside of corrugated roll, steam pressure is generally 0.5MPa, MPa divided by 9.8 is the number of kilograms. About 5kg of steam temperature is about 158℃, 13kg of steam temperature is about 190℃ or so, the two are compared. That is to say, at what vapor pressure, what temperature should be reached, and if not, there is water in the roll, or there is something wrong with the piping system.
Comparison table of steam pressure:
Second, as a single-sided machine, it needs temperature in order to make the paper to reach the appropriate temperature. So, the temperature check is more important to measure the temperature of the paper, even if the corrugated roller temperature can not be reached, as long as the speed of the slow down, the temperature of the paper can meet the requirements.
Recommended temperature of the bottom paper is 85-95℃, the temperature of the corrugated paper in is 70-80℃, the temperature of a piece of paper produced on corrugated line is 90-100℃. This is a reference temperature obtained by experts after many tests. We need to know that all the temperature control is to control the temperature of the paper.
6) Single Facer Clearance Adjustment
"Single-side clearance adjustment" will be introduced in the fourth section of this chapter, which will not be described here.
7) Environmental Inspection
The captain also checks the leaking of the equipment; Whether the indicator light is normal; or if any abnormal sound etc..
8) Machine Test Run
The captain must well inspect before starting up, forming good habits, and then start the machine test run. Take general traditional equipment as an example, when starting up, the main motor press the "enter" light and then press the "start" button, and then press the "speed up" button to preheat the machine at a constant speed, the speed is controlled at 10-20m/min for test run.
2. Responsibilities of the Deputy
1) Prepared Materials
First of all, we need to prepare tape, including high temperature double-sided tape, cow leather tape, double-sided tape. For example, high temperature double-sided adhesive is used to connect paper, because this adhesive will enter the high temperature corrugated machine inside, if not high temperature double-sided adhesive, the paper will bebroken.
Secondly, whether the paper cutter is well prepared, the paper cutter should be used when cutting paper, and the place where the paper is broken should be cut off. Thirdly, you should measure the width of the door when you are in production. Fourth, we need to mark after the paper is removed, so a marker pen is needed.
2) To Understand the Order
To understand what is the next order according to the PCS, scheduling the orders to determine which one goes first, what kind of paper is needed, instruct the fork lift operator to cross the paper first, and prepare the paper for the next order. All this coordinated work to be done by deputies.
3) Check the Base Paper
First of all, check whether the original paper material is correct, whether the paper web and direction is correct, whether the original paper is stained. Secondly, to check the tightness of the base paper, the moisture content measurement under normal circumstances, in the paper "loose" in the area of the moisture removal is lower than inthe "tight" area, the tightness of the base paper is not the same asthe best not to use, if you must use, it is necessary to make appropriate adjustments in the preheating cylinder base paper tension position.
4) Check the Glue
Glue inspection is mainly to check the gelatinization temperature, glue viscosity, glue color. After the glue on the machine, need to observe the glue on the machine operation, check glue width, glue thickness, glue quantity is uniform.
3. Starting Production Process
1) Matters while in the Process of Paper Loading
a. We should pay attention when operating the rocker arm of the base paper frame, the base paper chuck must be aligned with the base paper core, or the end of the original paper will be damaged, and difficult to feeding paper next time .
b. We should pay attention in using automatic splicer, when we begin to threading paper, after paper pulled to theroller, to press out a straight line with the hand, so that the paper is easier to tear, press the line, affixed double-sided adhesive tape, the role of double-sided adhesive tape is to connect to another piece of paper while papersplicing. The two ends of the double-sided adhesive shall be torn into a 45-degree bevel angle, which is for the convenience of paper connection, so as not to stick the double-sided adhesive to the roller.
c. After tear the double-sided adhesive, usea mirror to observe whether the paper is aligned, if not aligned with the paper,it will be connected to the dislocation.
2) Matters while in the Process of Paper Threading
The steps of paper threading: The Clamped base paper→Board Receiving wheel→rubber wheel→freewheel→ fixed guide wheel→free guide wheel→ regulating wheel. We should pay attention of the direction of paper threading, if installed wrong way, the free wheel will not move. Tear the end of the paper into a bevel angle before putting it through the paper, so that the back part of the paper can be put through. After the paper threading, having the inner linerboard or medium crossing the preheater, and then having corrugated paper crossing the preheater roller of a single corrugated machine, from the pressure roller and the lower corrugated roll out. After the paper onthe bridge crossing the triple preheating cylinder, going into the laminating machine.
3) Paperboard Production
Paper finally formed a piece of cardboard after through the double-sided machine, hot plate, and then through the long itudinalcutting machine and crosscutting machine.
Above is the operation and inspection of the whole single facer, and finally summarize the matters to pay attention to:
(1) Cleaning, inspection before the boot of the equipment;
(2) Carefully checkthe processing of products and processes, raw materials and quality requirements;
(3) The captain needs to start the motor running at low speed, to confirm whether there are abnormal phenomena;
(4) Execute the next action after each operation completed .