BL18 Screw Fastening Machine Troubleshooting: 53 Fast Fixes

Press More to open the main menu, go to the last page and open the Chinese-English version switch, then enter 2 for English and 1 for Chinese. Press the reset key afterwards to clear the alarm that the switch triggers. This is normal behaviour, not a fault, and the same menu path returns the machine to Chinese. ▶ Watch Part 0 at 00:12 — Watch at 00:12

No. The language switch deliberately drops the machine out of its ready state, so the controller raises an alarm until you acknowledge it. Press the reset button on the pendant or the cabinet and the alarm clears immediately. Do not clear it by power-cycling the machine, and do not start a program before the alarm is gone. ▶ Watch Part 0 at 00:24 — Watch at 00:24

Handle reset only returns the X, Y and Z axes of the working head. It does not move the conveyor or the fixtures. Machine reset, using the reset button on the cabinet, returns the three axes and the transport position, which is what you need before teaching a program. Use machine reset whenever the fixture must move back to a known station. ▶ Watch Part 2 at 00:52 — Watch at 00:52

That means the reset did not complete. Check the pendant: X, Y and Z must all read 0 before you continue. If any axis still carries a value, the reset button was pressed too briefly or an axis is against a limit. Press machine reset again from the cabinet, not the handle, and confirm the zeros before teaching anything. ▶ Watch Part 2 at 01:18 — Watch at 01:18

Left to right on the cabinet: start, start, reset, screw feeding, and drive the electric screwdriver. Identical buttons sit on the other side of the machine and mean exactly the same thing, so an operator can work from either side. A red emergency stop button is also fitted — pressing it halts every movement instantly, and the machine must be reset afterwards. ▶ Watch Part 2 at 01:28 — Watch at 01:28

Electrical supply is AC 220 V, 50 Hz through the supplied power cord. Compressed air connects at the blue quick coupling on the inlet; operating air pressure is 0.55-0.65 MPa. There is also a separate small gauge above the screw feeder. If either supply is outside its range the head will not pick screws reliably, so confirm both before blaming the program. ▶ Watch Part 2 at 00:27 — Watch at 00:27

Delete the incomplete red rows, then press the key that restores all default parameters, and confirm with the More command key. The full default set, including the servo configuration that was missing, comes back and the text stops being red. Do not hand-type the values; restored defaults are the factory set and they match the machine’s mechanics. ▶ Watch Part 3 at 00:00 — Watch at 00:00

Press Position 1 on the pendant and long-press until it flashes red so Fixture 1 moves to the fastening station. Press the switch button, open the folder, set the file number, confirm, then type the product name with the move-cursor key to change characters. The new program opens with default parameters and empty screw-hole coordinates ready to teach. ▶ Watch Part 2 at 03:44 — Watch at 03:44

Move the working head over the hole with the X and Y jog keys, using the CCD camera view to centre it, then press the coordinate key marked 1 on the controller to record the point. Repeat for every hole. Move slowly near the product and always confirm the Z axis is raised, or the head will collide with the cabinet frame. ▶ Watch Part 3 at 02:22 — Watch at 02:22

Yes. The two fixtures are separate coordinate systems, so each fixture needs its own taught program. Build Fixture 1 first, then configure the I/O parameters and teach Fixture 2 the same way. Press Position 1 or Position 2 into position and select the matching program before you run, otherwise the head will fasten against an empty fixture. ▶ Watch Part 2 at 03:44 — Watch at 03:44

Open More, go to page two, and choose the sixth option, Output Signal Programming. The output signal value must be set to 12 — 12 is the hardware interface number of that signal and it cannot be anything else. Set it once and the second fixture can be programmed and run. If this field is wrong, Fixture 2 will not fasten at all. ▶ Watch Part 4 at 00:30 — Watch at 00:30

Move the head over a screw hole, then press the Z-axis descend key. Slow the axis down as the head approaches the product and stop just above the surface, leaving a small gap rather than pressing the fixture. Press OK to store the height. Fast descent near the product is the most common cause of a crashed head and a damaged fixture. ▶ Watch Part 5 at 00:00 — Watch at 00:00

Yes, but the Z-axis height for each depth must be set separately. Fasten one hole at the first depth, check the result, then set the second height and check again. Never copy one fixture’s Z height onto the other to save time — it will drive the head into the fixture and can damage the machine table. ▶ Watch Part 6 at 03:32 — Watch at 03:32

Up to 1,000 program sets. Each program holds its own coordinates, Z heights and parameters, so you can keep a separate program per cabinet model and per fixture and simply call up the right number. Give each file a clear product name when you create it; that name is what you will search for months later. ▶ Watch Part 1 at 01:22 — Watch at 01:22

Part 16 is a thirty-minute walkthrough that builds a full dual-fixture program in one sitting: coordinates for both fixtures, the I/O entries, the Z heights, and the batch height edits. Use it after you have learned the individual steps in Parts 3 to 6, because it assumes you already recognise the menus. It ends with the program ready to run. ▶ Watch Part 16 at 00:00 — Watch at 00:00

Stop the machine first. Open the feeder lid and look at the track where screws travel. Remove the stuck screw, check the upper gland height if screws keep clipping, then close up and use the screw-feed test switch. Clear any screw already sitting at the head before testing — two screws in that position will jam again immediately. ▶ Watch Part 10 at 00:01 — Watch at 00:01

Remove any screw already at the head, then press the screw-feed test switch and watch one screw arrive. Repeat two or three times. Good feeding means a screw appears every time. If it arrives irregularly the track or the gland height needs attention, not the program parameters, which are set at the factory. ▶ Watch Part 10 at 01:00 — Watch at 01:00

Add screws freely but never overfill. Too many screws stop the track from moving and cause repeated jams; the feeder then alarms continuously. Top up in smaller amounts and check the screw count each time. The feeder itself is set at the factory, so a jam is a loading or a track problem, not a parameter problem. ▶ Watch Part 9 at 01:35 — Watch at 01:35

This is a nozzle position problem nine times out of ten. Press Preview Trajectory, switch to Output, move the cursor to 7 and press 1 to lower the nozzle, then check it sits directly over the hole. Loosen the nut to correct left-right offset, and the four lower screws to correct front-back offset, then tighten. ▶ Watch Part 11 at 00:00 — Watch at 00:00

The nozzle must stop slightly higher than the cabinet cap so it can never collide, and slightly above the pick-up point so the screw still seats. Too low hits the sensor and alarms; too high and the screw will not feed into place. Adjust in small steps, blow a test screw each time, then fasten the adjusting screw so the position cannot drift. ▶ Watch Part 11 at 03:59 — Watch at 03:59

Check the filter cotton in the vacuum path first. If it is dirty the suction collapses. Unscrew the housing, pull the old cotton out and fit a new one with the arrow pointing upward — fitted upside down it will not draw at all — then push it fully home and close the clip. A loose or wrongly seated cotton also leaks air. ▶ Watch Part 12 at 02:55 — Watch at 02:55

Loosen the M4 screw on the side of the holder and lift the clip to release the assembly. Disconnect the air tube by pressing the fitting in and pulling once — never pull it by force, the internal clip breaks. Fit the new nozzle, press it fully down until it seats, tighten firmly, then refit the clip with its tab aligned. ▶ Watch Part 12 at 00:00 — Watch at 00:00

Lower the nozzle slowly onto the pick-up point, leaving a small clearance rather than pressing the fixture, then press OK to store it. To verify, open the navigation screen, choose Machine Test and run item 6 to lift after picking, once with a screw and once without. A correctly centred screw in the nozzle means the height is right. ▶ Watch Part 17 at 00:35 — Watch at 00:35

Turn on screwdriver completion detection and lower the tightening torque. Completion detection compares the torque actually reached against the target and stops the driver before a thread strips; torque set too high strips threads on soft cabinet material. Change only the tightening torque parameter, then run one test screw before resuming the whole program. ▶ Watch Part 15 at 01:50 — Watch at 01:50

Increase the tightening torque parameter, or check the floating-lock time, which should normally be 0.3 seconds. If the screw is not driven home the controller will alarm, and if floating-lock is too short the head releases before seating. Change one value at a time and confirm with a single test screw. ▶ Watch Part 15 at 01:05 — Watch at 01:05

Three: screwdriver completion detection set to 1, so torque must be reached; the alarm option set to 2, so a badly driven screw still alarms instead of the machine driving on; and screw-presence detection set to 2, without which the machine will drive with or without a screw in the nozzle. Use torque mode, not depth mode — this machine has no depth sensing. ▶ Watch Part 15 at 01:57 — Watch at 01:57

Screw-presence detection is switched off. Set it to 2. Without it the controller cannot tell an empty nozzle from a loaded one, so it drives the head down onto the hole with nothing to fasten. That produces loose or missing screws and can mark the cabinet surface. Switch it on, then run one test screw. ▶ Watch Part 15 at 02:55 — Watch at 02:55

Typical settings are X at 600, Y at 400 and Z at 400. The X axis maximum is 800. Raising the values does shorten cycle time, but speeds that are too high make the head arrive out of position and the screw land off-centre. If you change them, raise one axis at a time and re-check the first test screw. ▶ Watch Part 15 at 03:11 — Watch at 03:11

Safety height is the Z height the head lifts to between screws, set to 155 on the BL18. It must clear the top of the feeder, because the feeder slides in underneath to deliver the next screw. If safety height is too low the head collides with the feeder, which is a hard mechanical stop and can bend the nozzle. ▶ Watch Part 15 at 03:51 — Watch at 03:51

It holds the head against the cabinet briefly after the driver stops, letting the screw settle instead of springing back. The normal value is 0.3 seconds. It matters when screws are not driven down fully. It is not a fixed figure, so adjust it against your own cabinet material, but change only that one value at a time. ▶ Watch Part 15 at 01:04 — Watch at 01:04

Press Position 1, choose Single Step, select the first coordinate and press Single Step again. Watch the approach, check the screw sits flat and tight, then do the same for the second coordinate. Only after two good screws should you press Cursor Start to run the remaining holes automatically. If the head descends too fast, slow the cylinder. ▶ Watch Part 17 at 03:40 — Watch at 03:40

Yes. Press Start and the machine skips that fastening point and continues with the rest, which is the correct response for a stripped thread or a hole that already contains a screw. Do not open the feeder to investigate — the feeder is fine. Skip the hole, finish the cabinet, and repair that single screw afterwards. ▶ Watch Part 10 at 02:35 — Watch at 02:35

Press Position 1, find the next hole that still needs a screw, move the machine over it, then press Cursor Start followed by Start. The machine fastens from that point onwards and leaves the finished holes untouched. If no screw is waiting at the head, blow one into place first, then start from the cursor. ▶ Watch Part 18 at 00:00 — Watch at 00:00

Check the limit and position sensors. Each has an indicator light that must be on while the machine is running; if a light is off the controller refuses to move that axis. Loosen the sensor with a small wrench and slide it until the light comes on, then retighten. Also check the magnetic switches on the cylinders, which can work loose. ▶ Watch Part 11 at 12:41 — Watch at 12:41

Work through three things in order: confirm the machine is reset and all three axes read zero, confirm the emergency stop has not been pressed, and confirm the sensor lights for the axis you are trying to move. If a light is out, adjusting that sensor usually restores motion immediately. Note that the buttons on both sides of the machine are equivalent. ▶ Watch Part 11 at 12:28 — Watch at 12:28

Watch the indicator lights on top of each cylinder while an operator cycles the machine in manual mode. A cylinder that should clamp but shows no light is not being commanded, which points to a magnetic switch out of position rather than a mechanical fault. Correcting the switch position is usually enough; the pneumatics themselves rarely fail. ▶ Watch Part 11 at 14:03 — Watch at 14:03

Place the LED module in the fixture with its edge against the fixed reference on the right, fit the die-cast aluminium frame over it, align module to frame, then flip the pneumatic clamping handle to clamp. Modules must sit close to the lower-right corner reference. Misaligned loading shows up as screws consistently offset in one direction. ▶ Watch Part 2 at 05:02 — Watch at 05:02

It is not clamped properly. Fastening requires a cabinet that cannot wobble at all, so check the clamping cylinder has actually closed and the clamping position suits this cabinet size. A module that is not clamped at the cylinder position is the classic cause of off-centre screws and of calibration that appears to drift afterwards. ▶ Watch Part 7 at 01:38 — Watch at 01:38

Move the clamping cylinder on the movable side to suit the new size, then fix it with its screws so it cannot slide. The BL18 handles cabinets up to the fixture limit and the two fixtures can carry different sizes — one larger cabinet on Fixture 1 and a smaller one on Fixture 2. Both screws in a cabinet must be identical. ▶ Watch Part 9 at 03:18 — Watch at 03:18

Use Fixture 1 only. Set and test its program, and do not apply the same Z height to Fixture 2 while it is empty — with no cabinet present the head will travel to the fixture surface and damage the machine table. Run your single-cabinet tests on Fixture 1 until you have a second cabinet to load. ▶ Watch Part 6 at 07:04 — Watch at 07:04

Before running any program, walk every screw hole and remove anything that sits in the head’s path — module mounts, frame tabs, loose parts. Never move the X or Y axis while the Z axis is down. Reduce to slow speed as the head approaches the product, and treat the pre-run check as mandatory rather than optional. ▶ Watch Part 13 at 00:02 — Watch at 00:02

While the right fixture is fastening at Station 2, you load the next cabinet on the left fixture at Station 1. When fastening finishes the fixture assembly shifts right, the finished cabinet arrives at Station 3 for unloading, and the newly loaded one moves into the fastening position. The machine therefore never waits for an operator to load, which is where the cycle-time gain comes from. ▶ Watch Part 8 at 00:00 — Watch at 00:00

Rotate the CCD light-source brightness knob until the holes are clearly visible, then judge by what the pendant shows, not by the room. If the light does not come on at all, check the light’s power cords for a loose connector before assuming the lamp has failed. Brightness is an operator setting and needs no engineer visit. ▶ Watch Part 3 at 01:45 — Watch at 01:45

Recalibrate the distance between the nozzle and the drill tip. Extend the drill head using Preview Trajectory then Output then item 6, lower it into a screw hole and centre it exactly, store the point, then bring the camera cursor to the same hole centre and confirm. The offset value then updates by itself and cannot be typed in manually. ▶ Watch Part 12 at 04:35 — Watch at 04:35

First clamp the cabinet, then align the extended bit head to the dead centre of a hole and confirm so the bit-tip coordinates are captured. The cursor then jumps to the camera item: raise Z to its highest position, move the camera over the same hole and align the red cursor to that centre. Confirm and the distance value updates automatically. ▶ Watch Part 14 at 00:04 — Watch at 00:04

Adjust the sensor rather than replacing it. With a screw present the red and green lights should be on together; with no screw only green. If it does not detect, loosen the mounting screw and slide the sensor slowly up or down until the yellow light comes on, then test again with a real screw. Never leave it adjusted so the light is off. ▶ Watch Part 11 at 07:17 — Watch at 07:17

Clean the linear-guide sliders first, then oil the lead-screw sliders and run each block through its full travel so the oil distributes, and finally wipe away the used black residue. Lubrication applies to the guide sliders and lead-screw sliders on the axes. Doing it on a schedule is what keeps positioning at the rated accuracy. ▶ Watch Part 18 at 04:21 — Watch at 04:21

Three: suction nozzles, filter cotton for the vacuum path, and the fastening screws themselves, M4×10 with flat and spring washers. Nozzles wear and get knocked, filter cotton clogs and quietly kills suction, and screws must be identical to each other. Changing either consumable requires rechecking nozzle position and, after a nozzle change, calibration. ▶ Watch Part 12 at 00:00 — Watch at 00:00

Four checks: the cabinet is clamped tight and cannot wobble, every screw hole is clear of obstacles in the head’s path, the feeder has screws and no jam, and the sensor lights are on. Part 13 states plainly that this check must be carried out before running a program. It takes under two minutes and prevents most crash damage. ▶ Watch Part 13 at 02:13 — Watch at 02:13

Because the feeder, nozzle and torque are set for one screw specification. Mixed screws change the seating depth and the torque actually reached, so screws either strip or stay loose, and the detection options will alarm at random. The BL18 standard screw is M4×10 with flat and spring washers; if your product needs another specification, confirm it when ordering. ▶ Watch Part 13 at 01:18 — Watch at 01:18

Maximum compatible fixture is 1024 x 1024 x 105 mm, and positioning accuracy is ±0.02mm, so cabinet modules of different thicknesses are all within reach thanks to the extended Z-axis stroke. The machine is 4700 x 1800 x 1500 mm and weighs about 550 kg. Confirm your own cabinet drawing against the fixture limit before ordering. ▶ Watch Part 1 at 00:15 — Watch at 00:15

One year on the whole machine, with free after-sales repair or replacement for quality-related issues. Response is within 30 minutes; inside the Pearl River Delta a technician is dispatched within 24 hours, outside it within 48 hours depending on the situation. After-sales staff are on standby 24 hours a day, seven days a week, including public holidays. ▶ Watch Part 10 at 03:04 — Watch at 03:04

Contact JHIMS engineering directly at [email protected] or on (86-755) 86700443, or through WhatsApp. Send the video part number you were following, the exact alarm text shown on the pendant, and which fixture the machine stopped on. The Part 10 video closes by asking customers to stop guessing and call rather than editing feeder parameters themselves. ▶ Watch Part 10 at 03:04 — Watch at 03:04