Follow the wiring harness ↑, let’s make progress together!
Recently, the official website of Haoruituo Technology, a leading company in wire harness detection equipment, has released a free experience activity related to "terminal crimp quality". In my opinion, this activity is quite valuable.
especially for those who do not have terminal profile analyzer and do not use terminal profile analyzer. You should know that this kind of profile service is a paid service for other manufacturers. A single terminal cable test report costs 300-500 yuan. Now Haoruituo is free for everyone, and there seems to be no limit on the number. Making 10 is equivalent to grabbing 3,000 yuan of wool. The details of the
activity are excerpted as follows. Interested friends can participate in the event according to the instructions. For more information, you can go to Haoruituo's official official account by yourself.
"Exclusive benefits of Wire Harness Industry! Free terminal profile analysis [Public welfare activities] 》
Activity time: From now until October 30, 2022
Activity object: All wiring harness enterprises.
Activity content: freely conducts wire harness terminal profile detection for enterprises, and also feedbacks the inspection report.
Participation method: There is no threshold, you only need to express the terminal line you want to detect to the specified address, no other procedures are required.
Shipping rules: 1. Send samples of terminals that need to be tested, and each terminal wire of is labeled with a model label to distinguish .
2. Please attach instructions in the express bag in the following format to contact us to receive the test feedback.
[ format content ] 1. Factory name: 2. Contact person: 3. Phone:
Event fee: 0 yuan (sovereign promise that no fees will be charged for this event).
Feedback content: 1. Sample profile analysis report (electronic version); 2. Common terminal problems and directional guidance are included.
Detection cycle: can complete the profile analysis report within 1-3 working days after receiving the sample.
Contact number: 0755-2658 3671
Mailing address: No. 268, Chuangye 2nd Road, Xin'an Street, Bao'an, Shenzhen, 607, Building B, Donglian Building, No. 268, Xin'an Street, Bao'an, Shenzhen Gao Sheng (accepted)
Finally, the editor attaches you common problems of bad crimping. Based on my experience, these problems exist more or less in almost every factory. Let’s see if your family has similar problems.
1-The problem of wire crimping failure
Legend problem: There is no obvious deformation of the wires in the figure, and most of them still retain the circular characteristics of the raw material.
Possible reasons: 1. The wire specifications are too large; 2. The number of wire core strands is insufficient; 3. The crimp height is slightly higher.
Solution: 1. Check whether the specifications of the wire and the number of wire core strands meet the standards; 2. Measure whether the crimp height meets the requirements.
2-The end of the crimp wing is not qualified
Legend problem: The end of the crimp wing contacts the bottom material after riveting.
Possible reasons: 1. The crimping height is too low; 2. The terminal crimping wings are asymmetric.
Solution: 1. Measure the crimp height and re-adjust to the standard height; 2. Check whether the terminal crimp wings are symmetrical.
Legend problem: The end of the crimp wing touches the inner side wall of the wrap.
Possible reasons: 1. The crimping height is unqualified; 2. The terminal crimping wings are asymmetric.
Solution: 1. Measure the crimp height and re-adjust to the standard height; 2. Check whether the terminal crimp wings are symmetrical.
Legend problem: One crimp wing on one side of touches the inner side wall of the wrapping tube, and there is no crimp deformation in the wrapped wire.
Possible reasons: 1. The crimping height is unqualified; 2. The terminal crimping wings are asymmetric; 3. The conductor may be cut off.
Solution: 1. Measure the crimp height and re-adjust to the standard height; 2. Check whether the terminal crimp wings are symmetrical; 3. Confirm whether there is a problem of the wire being cut off during the opening and cutting process.
3-Crimp wing lap length problem
Legend problem: crimp wing is not locked.
Possible reasons: 1. The terminal may be too large because the wire core is too large, resulting in the crimping area; 2. The wrong crimping die is used.
Solution: 1. Use terminals with larger crimp area or use wire cores with smaller OD; 2. Check whether the crimp die is correct.
4-Crimp wing support angle problem
Legend problem: support angle is greater than 30 degrees, resulting in CFE crimp curl end spacing greater than 50% of the thickness of the raw material.
Possible reasons: 1. The crimp height is unqualified; 2. The crimp blade may be worn; 3. The terminal crimp wings are asymmetric.
Solution: 1. Remeasure the crimp height to determine whether it is standard; 2. Check whether the crimp blade is worn; 3. Check the symmetry of the crimp wings at the terminals.
5-Bottom thickness problem
Legend problem: bottom thickness of the packing tube is less than 75% of the thickness of the raw material, and the crimp burrs are too long.
Possible reason: is over-crimped, causing excessive extrusion and deformation of the raw material.
Solution: adjust the crimp height so that the bottom thickness is at least 75% of the raw material thickness, and the burr height is less than 1 material thickness.
6-Bottom burr width and height issues
Legend issue: crimp burr width significantly exceeds the standard value. Possible cause: The round edge indicates that the crimp base knife (base) is worn, causing burrs. Solution: needs to be checked and replaced with crimp base knife. Legend problem: crimp burrs are too long and do not meet the requirements. Possible reasons: 1. The new crimp mold may be overpressurized; 2. The upper and lower blades are not applied to it, and there may be offset. Solution: 1. Adjust the crimp height; 2. Adjust the crimp mold to align the offset upper and lower cutters. 7-Upper press knife and base problem Legend problem: 1. Tints appear in crimp contour; 2. The width of the burr is too wide. Possible reasons: 1. The collision between the compressor and the bottom knife causes the crimp profile to be extruded and deformed; 2. The bottom knife is damaged and causes burrs. Solution: 1. Adjust the crimping die; 2. Check and replace the crimping die. 8-Cracking problem for the inner wall of the terminal Legend problem: No cracks can appear on the inner and outer walls of the packing, but cracks appear on the inner wall in the legend. Possible cause: damage to the bottom blade leads to squeeze and tear the inner wall of the pack. Solution: Check and replace the base knife. Legend problem: There are obvious cracks on the inner wall of . Possible reasons: slices are located near the serrated groove, continue to grind the section, and cracks will occur in normal circumstances. Solution: Adjust the distance between the slice and the serrated groove. If the crack does not disappear, check the terminal material and adjust the crimp mold. "Line Harness Intelligent Manufacturing" Technology Exchange Group , provides industry elites with channels for mutual communication, mutual learning and information exchange! If you need to join the group, please: Follow us Public account: Wire harness intelligent manufacturing Focus Wire harness intelligent manufacturing related information Shared Wire harness industry latest updates
