Terminal pressing is an important process in the processing of wire harness. In the whole industry, the situation of poor processing in this process is relatively
high.Only by improving the good quality of the terminal pressing operation can we improve the production capacity of the wire harness and improve the efficiency
and quality of the wire harness processing.So what are the reasons for the malfunction terminal of the automatic terminal machine?

The main bad phenomena in the terminal pressing operation are listed below, and the common reasons for the bad phenomenon are analyzed.

One, terminal distortion and deformability

Form of expression:

The transverse bending deformation of the 1. terminal;

2. terminal axial distortion.

Bad reasons:

The 1. terminal is not in the center of the lower blade and is inclined to the left / right side.

2., when the terminal conveyor of the mold is sent to the terminal position, if the spring tension of the conveyor is too weak or too strong,the terminal can not be
transmitted to the positive position of flat plug L.

The situation of unreached or exceeding;

The wear of the blade (Crimper/Anvil) at the 3. dozen ends will be bad.

The poor bending of the 4. terminal is caused by the central dislocation of the splice and the lower blade. In addition to this, the blade will be worn and the
indentation is too deep.

5. because of the wear of the position adjusting wire, the terminal is not in place.

Two. The wire harness of wire rod is not well assembled

Form of expression:

1. deep beating: pressure core area pressure to line skin;

2. deep beating: the length of the core line is too long to cause the terminal deformation.

3. shallowly hit: the outer skin or the core line does not press to the designated area;

Bad reasons:

1. core line peeling length is too long or too short;

2. pressure connection is the position of wire rod is mistaken.

Three. Bad bell mouth

Form of expression:

Bad reasons:

The position error bell mouthpiece of the 1. terminal and the splice is not formed or formed too much.

2.The flat top head is more backward than STRIP Guide Plate, and the bad phenomenon occurs when the terminal migration is transferred.

Four. Bad cut

Form of expression:

Bad reasons:

The cutting part of the 1. terminal is not in the right position, which is more prominent or even worse. It is too long or too short for cutting.Section and oblique section
bending stroke. When the cut is too long, the box is not in place and the box is hung. The injury terminal is caused by too short.

When the 2. terminal is cut off, the cutting part will be rough.

Reason：

(1) the condition of the cut section being worn out

The condition of the end wear of the flat top of insulation

(3) the situation of slit on the cut section and the flat top

Five, terminal invert & terminal hook bad

Form of expression:

The 1. terminal hook is the phenomenon that the front end of the terminal is bent upwards when the end of the terminal is hit.

The 2. terminal pitching is the phenomenon that the front end of the terminal is bent down when the end is hit.

Bad reasons:

The 1. terminal is not in the positive position of the flat top;

2. flat top and support table are not in positive position.

Six. The loose core of the core

Form of expression:

All the core of the line is not completely closed to the pressing area.

Bad reasons:

Cable stripping insulation layer or cluster processing process, the core wire is loose, the process control and the use of improved semi stripping;

Seven. Poor skin pressing area

Form of expression:

The 1. cutter lock pierced the insulation layer.

2. the cutters have not locked the wire completely.

The 3. sides of the lock are asymmetrical on both sides.

Bad reasons:

1, the edge of the knife does not match;

2, adjust the height of the joint.

Eight, poor transmission distance (Feeding)

Feeding distance refers to the moving distance to the next terminal slot, such as figure:

Form and reason:

1. undesirable transmission caused by poor grip

2. undesirable transmission caused by the wear of the grip.

Nine, poor pulling force NG

Form of expression: after pressing, pull out force test NG (exclude die factor)

Bad treatment way: adjust the height of joint

1. method of adjusting the height of die with general mould

2.Cam type die adjusting height method

The above is the reason why the automatic terminal machine fails to connect the terminal. What are the reasons for the failure?And summarizes the causes and
improvement methods of the 9 terminals.I believe you have a certain understanding of the reason why the automatic terminal machine is not properly pressed. In
daily life,
we must do well the maintenance work of the automatic terminal machine.

Improve the efficiency of the pressing terminal and save the labor cost.