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After the machine manufacturers briefly describe the process of lifting the feet and hot air wrinkles
Lifting the feet: lifting the feet, also known as roughening, napping, sanding, etc., is one of the important processes in the process of adhesive shoes. The purpose of roughening the foot is to eliminate the leather finish on the surface of the foot, making the fiber rough and creating a new active surface to facilitate the penetration of the adhesive and the improvement of the bond strength. The roughening method includes roughening of the abrasive cloth wheel, roughening of the abrasive cloth belt, and roughening of the steel wheel. The fines and dust adhering to the roughened surface layer should be removed at any time; the application of the adhesive should be carried out as soon as possible to avoid the increase of the bond strength due to the aging of the roughened layer. The roughening process of the foot is the first element of the three elements of the adhesive strength of the adhesive shoe (roughening, adhesive, adhesive strength), and the rear machine is very important for its quality control. The main points of the roughening of the foot are: roughening according to the bonding position, too much will damage the appearance quality of the upper surface, too little will reduce the bonding strength; the depth of roughening shall not exceed the thickness of the upper surface; The shackles should be first slashed and then roughened, strictly according to the stitches; the roughened surface should be cleaned and promptly entered into the brushing process. The roughening of the leather or rubber outsole is usually carried out outside the assembly line.
Hot air wrinkle: hot air wrinkle is a finishing process that eliminates the wrinkles on the upper surface, and its purpose is to improve the quality of the upper. The shoemaking equipment used is a hot air wrinkle machine, or a steam and hot air ironing machine. The principle of hot air wrinkle is to first wet the leather grain layer with steam to relax the upper stress, and then use the hot air to dry the grain layer and press the roller to flatten, and the wrinkles can be eliminated. The advantage of the hot air wrinkle process is that it can not only improve the quality of the upper, but also protect the oil in the leather and avoid damage to the upper.
Middle and rear machine nozzle mechanism adjustment
After the rubber nozzle, the starting point: after the rubber nozzle is retracted from the origin to the back of the starting point, the rubber is applied after the start. After adjusting the front and back of the starting point, the wrench can relax the proximity switch X2, fix the position above, adjust the position, and then lock. Tightening the screws.
In the middle of the rubber nozzle, in the middle mode, the rubber nozzle is retracted from the origin to the starting point of the middle to start the middle of the rubber. The value of the decoder is also zero from the starting point of the middle and can be used to relax the proximity switch X10. Fix the screws and adjust the position before tightening the screws.
The origin of the nozzle: (factory setting: please do not adjust) When the shoe machine is in standby, the nozzle will automatically return to the origin. At this time, the proximity switch X7 is ON, and the machine can work normally.
One finger sweep position: select large size shoes, when the rubber mouth advances to this position, one finger will sweep in; the position should be adjusted when the rubber nozzle walks to the two fingers, at this time, the first finger sweeping party will not sweep the glue. Mouth, you can loosen the fixing screw on the X26 above the switch, adjust the position, and then tighten the screw.
Advance speed of the rubber nozzle: The advance speed of the rubber nozzle will affect the amount of glue and the working speed. It can be adjusted according to the demand. The throttle valve is located above the right side of the machine: when it rotates clockwise, the forward speed becomes slower, and vice versa.
Plastic nozzle rise and fall speed: (factory setting: Do not adjust the shoe making equipment at will) The speed of the rubber nozzle is controlled by the throttle valve TH22.1, so that the nozzle should be lowered smoothly and will not hit the midsole. The nozzle rising speed is controlled by the throttle valve TH4, and the nozzle needs to be raised smoothly.
