What is SMT?(二) -- Material Losses

author: Hellen

2022-09-06

Material Losses

1, nozzle deformation, blockage, broken, vacuum air pressure isn’t enough, air leakage, resulting in the suction material can not afford, take the material isn’t correct, identification can’t pass and throw material. Solution: The technician is required to check the equipment every day, test the NOZZLE center, clean the nozzle, and maintain the equipment regularly according to the plan.
2, spring tension isn’t enough, nozzle and HOLD isn’t coordinated, up and down isn’t smooth caused by taking bad material; solution: according to the plan of regular maintenance equipment, inspection and replacement of wearable parts.
3, HOLD/SHAFT or PISTON deformation, nozzle bending, nozzle wear shortening caused by poor pick-up; solution: regular maintenance equipment according to the plan, check and replace the wearing parts.
4, take the material isn’t in the center of the material, take the material height isn’t correct (generally to meet the parts after the downward pressure of 0.05MM shall prevail) and cause offset, take the material isn’t correct, there is offset, identification with the corresponding data parameters don’t match the identification system as invalid material discard; solution: according to the plan of regular maintenance equipment, check and replace the wearing parts, correct the machine origin.
5, vacuum valve, vacuum filter core dirty, there is a foreign body blocking the vacuum gas pipe channel isn’t smooth, when sucking instant vacuum isn’t enough equipment running speed caused by taking material bad; Solution: require the technician must clean the nozzle every day, according to the plan of regular maintenance equipment.
6, machine positioning isn’t level, vibration, machine and FEEDER resonance caused by taking bad material; solution: according to the plan of regular maintenance equipment, check the equipment level fixed support nuts.
7, screw rod, bearing wear loose caused by running vibration, stroke change and take material bad; solution: strictly forbidden to use the air gun to blow the inside of the machine to prevent dust, debris, components stick to the screw rod. Regularly maintain the equipment according to the plan, check and replace wearing parts.
8, motor bearing wear, code reader and amplifier aging caused by the machine origin change, inaccurate operation data and poor material; solution: regular maintenance equipment according to the plan, check and replace wearable parts, correct the machine origin.
9, vision, laser lens, nozzle reflective paper is not clean, there are debris interference with the camera recognition caused by poor processing; solution: require technicians must be daily point inspection equipment, test NOZZLE center, cleaning nozzle, according to the plan of regular maintenance equipment.
10, recognition of improper choice of light source, lamp aging luminous intensity, grayscale isn’t enough to cause poor processing; solution: regular maintenance of equipment according to the plan, test the brightness of the camera and the brightness of the lamp, check and replace vulnerable accessories.
11, reflective prism aging carbon, wear and scratch caused by poor processing; solution: regular maintenance equipment according to plan, check and replace wearable accessories.
12, insufficient air pressure, vacuum has a leak caused by insufficient air pressure and take up the material can not afford or take up after the patch on the way to fall; solution: according to the plan of regular maintenance equipment, inspection and replacement of wearing parts.
13, feeder deformation extrusion each other caused by feeding position change and take material bad; solution: according to the requirements of the operation.
14, feeder gland deformation, spring tension isn’tt enough to cause the material belt isn’t stuck in the feeder ratchet gear, not rolled with throwing material, check and replace the wearing parts.
15, camera loosening, aging caused by poor recognition of throwing material; solution: regular maintenance of equipment according to the plan, check and replace the wearing parts.
16, feeder ratchet gear, drive claw, positioning claw wear, bad electrical, feeding motor bad caused by feeder feed is not smooth to take the material or bad and throw material; check and replace the wearing parts.
17, the machine feeding platform wear caused by FEEDER installed loose and take material bad; solution: according to the plan of regular maintenance equipment, check and replace the wearing parts.
18、Some other special parts which need to decelerate and mount do not decelerate and mount, also will cause the absorption rate underground. Countermeasure: feeder supply material deceleration, X/Y/H axis deceleration or adjust each action with timing control.

What is SMT?(三) -- SMT Prospects

What is SMT?(一)