SL-550A Automatic Hardcover Making Machine
1. Specification: 
 2. Introduction
SL-550A Automatic Hardcover Making Machine consists of feeding unit, positioning unit and one independent automatic four sides edge folding unit. Machine adopts PLC controlling back push type feeder to feed the face paper, with easy operation and long service life. Face paper conveying unit has registration function and unique double pieces detecting and alarming function. Reasonable designed gluing unit ensures even glue. The new designed copper scraper can cooperate with gluing roller better. Conveying sucking belt and strong vacuum pump ensures the smooth transportation. Imported photoelectric is used to do the registration of face paper and the delivery of cardboard adopts linear guide rail and servo control system. Automatic four sides edge folding unit with edge repair function can finish work automaticlly, collecting unit with automatic lift function. 
This machine is mainly used to make book covers, folders, desk calendar, wall calendar and box cover fields, with features of beautiful products, high speed, high precision and etc.
3. Main Features:
1) Adopt imported ultrasonic paper tester device, simple operation which can keep two pieces of layered paper from entering into the machine at the same time.
2) Paper feeding and positioning system adopts imported high-precise photoelectric control device to make the paper and cardboard location more accurate.
3) The folding unit adopts special automatic angle-repair, edge-repair to ensure high yield.
4. Features
1) The feeder in this machine adopts back-push feeding system, which is controlled pneumatically, and its structure is simple and reasonable.
2) The width between stacker and feeding table is adjusted concentrically in the center. The operation is very easy without error.
3) New designed copper scraper cooperates with the roller more compactly, effectively avoiding paper winding. And the copper scraper is more durable.
4) The cardboard feeding table is controlled by linear guide line and servo motor, its location is correct and quick.
5) In the cardboard feeding table, the machine can automatically stop when lack of paper to reduce reject rate.
6) Transport belt is equipped with a powerful vacuum fan to keep the paper without any movement.
7) The whole machine adopts PLC control, featuring in simple operation. The troubles are displayed directly on the screen, which helps the operator easily remove them. 

5. Main Instruction
a. Bottom paper board feeding
The machine adopts back-pushing method to feed paper board. The movements is controlled by the cylinder, with features of simple structure and low malfunction rate. Pneumatic element adopts the Japan cylinder with longer service life.
 

b. Face paper feeding
Face paper side lay and delivering side lay can be adjusted in one step, it is more easy to operate. Ultrasonic detecting device can remove the double-sheet phenomenon effectively and make the machine stop moving in time.


 
New-type copper scraper can avoid the curling of face paper effectively.
Fluted feeding roller makes it possible to reduce the gluing area which can lower the rejection rate.
Glue tank and glue barrel are all adopt the double-deck structure, hot water can help to keep the temperature allowing the temperature can be controlled.
Temperature controller for hot melt glue and the displayer are installed on the control panel together, this can allow the worker knowing the change of temperature at any time.

1. Paper board feeding unit

The back-pushing feeding method of the paper board is controlled by the servo motor with the features of high accuracy. Side lay can be adjusted through the help of motor, it is easy to operate.
 

1. Pasting Unit

The double-color belt is driven by the servomotor, equipped with high-precision double color photoelectric, it is possible to detect the edge of face paper quickly. Two servo motors control the movement toward left and right making the pasting action more effectively. All the data can be in-putted on the control panel.
 
 

1. Folding Unit

 
Slant spring installed on the folding part can adjust the pressure of conveying belt easily. The double-deck design can reduce the requirement on the space to a large extent.
 

 

1. Locking Unit

 
Unique up and down double-deck locking structure can lock both the front and back part of the face paper, at the same time it can save the space greatly.
 

 

1. Pressing corner unit

Photoelectric controls the cylinder to press the paper board comer. The double- deck structure can save the space.
 

1. Other Configuration

 
Negative pressure detector can monitor the missing suction phenomenon effectively and make the machine stop working in time.
Each moving part is equipped with limited switch, this can avoid hurting and malfunction effectively.
 
 

1. Electric device

 
Well-know international brand electric devices are used on this machine, reliable quality insure a longer service life.
 

1.  Main Configuration: