The main principle of office assembly and fault diagnosis of automatic packaging machine
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1 The main components and working principle of the packaging machine The automatic structural scheme consists of the end arm operating tool, the material conveying device and the identification and verification system. The working principle is as follows:
1.1 The arm end operating tool is a tool that moves from one position to another using a device that the robot is coupled to its end. The arm end operating tool, the end manipulator, is a component used to grab product, directional movement and feel performance parameters. Their structural solutions range from single-type vacuum sleeves to series vacuum sleeves or arrays of clamping jaws. In packaging applications, end-operators are usually designed for direct use of vacuum sleeves, clamping jaws or two. The combination of the types.
1.2 Material Conveyor The material handling and handling device is some type of equipment required for automatic movement during transport, storage and control of the product during transmission and manufacturing. These include power transmission belts, monorail cranes, automatic guided vehicles and robots. A typical material handling and handling system includes a belt type input conveyor, a labeling machine, a bar code reader, an automatic device, and an output conveyor. A user graphical interface provides an easy to operate platform that depicts the pallet stacking form. According to the number of workpieces controlled for production, the robot grabs, orients and positions (stacks) each packaging container (box, box, bucket, can, etc.)
In the correct tray position. In the packaging process, the following factors need to be considered for the handling of the material: product shape, weight and material properties; speed, distance and direction of the product during transport, parcel and loading; the level of control required to connect with other devices and The maneuverability of the component is allowed to be reformed if needed.
1.3 Identification and Verification System A typical visual bar code detection capability confirms that each bar code corresponds to each product, so the bar code scanner and video recognition system record and verify the product label to ensure the integrity of the identification. The ability to identify, validate and accurately track products has become an integral part of the entire packaging system. The identification method can use traditional bar code to radio frequency (RF) sensors that can track the tray or all products. Online bar code printing and verification is also necessary. Vision technology, which provides effective and reliable means to ensure product quality, can be used in many applications of packaging, such as product inspection and orientation, filling level and counting, optical labeling, text recognition, labeling copy verification, labeling Record and verification of all text and graphics (away from the production line). The bar code system identifies products by product type, date and area code, and by the manufacturer's prepress or online printing process.
2 Common fault diagnosis and elimination 2.1 The breakage of the packaging material is caused by the joint of the packaging material, the excessive burrs of the broken line; the fault of the paper supply motor or the bad contact of the line; the damage of the paper supply proximity switch.
Method of exclusion:
(1) Remove unqualified packaging materials.
(2) Check the paper feed motor circuit.
(3) Replace the proximity switch.
2.2 bag sealing is not tight This fault is often caused by uneven inner layer of packaging material; uneven sealing pressure; low sealing temperature.
Method of exclusion:
(1) Remove unqualified packaging materials.
(2) Adjust the sealing pressure.
(3) Increase the heat sealing temperature.
2.3 Closing the road is not correct This fault is often caused by the position of the heat seal body.
Remedy: Re-adjust the heat seal body position.
2.4 The position of the cut bag is incorrectly deviated from the middle of the color mark.
Cause: The photoelectric switch (electric eye) is not positioned correctly.
Remedy: Readjust the position of the photoelectric switch (electric eye).
2.5 color mark positioning and photoelectric tracking compensation out of control This fault is often caused by seams and burrs of packaging materials; debris in the former, resulting in poor paper feeding; packaging materials to pull out the photoelectric switch (electric eye) of the paper guide; The light spot of the switch (electric eye) deviates from the color mark; the photoelectric switch has poor sensitivity, and the use of light and dark movement is wrong.
Method of exclusion:
(1) Remove unqualified packaging materials.
(2) Clean the former to make the paper pass smoothly.
(3) Insert the packaging material into the paper guide.
(4) Adjust the left and right position of the paper guide so that the light spot is in the middle of the color code.
(5) Replace the photoelectric switch and correctly select the light and dark switch.
2.6 When the color code tracking is not carried out (ie, the photoelectric switch is turned off), the bag length error is large. This fault is often caused by the bag length setting value being unsuitable; the roller pattern is flattened, causing the friction force to decrease; the roller pressure is small.
Method of exclusion:
(1) Increase the bag length setting so that the actual bag length is equal to or slightly larger than the standard length of the color standard.
(2) Replace the roller.
(3) Increase the roller pressure.
2.7 The bag is cut continuously or partially cut continuously. This fault is often caused by the pressure between the two cutters being too small; the cutting edge of the cutter becomes dull.
Method of exclusion:
(1) Adjust the pressure between the cutters.
(2) Grinding or replacing the cutter.
2.8 The paper feed motor does not turn or rotates. This fault is often caused by the paper feed control lever; the paper feed proximity switch is damaged; the start capacitor is damaged; the fuse is broken.
Method of exclusion:
(1) Solve the cause of the jam.
(2) Replace the paper feed proximity switch.
(3) Replace the starting capacitor.
(4) Replace the fuse.
2.9 The heat sealer body does not heat up. The heat sealer body temperature is out of control. This fault is often caused by; the heating pipe is damaged; the line is faulty; the fuse is broken; the temperature regulator is damaged; the thermocouple is broken.
Method of exclusion:
(1) Replace the heating tube.
(2) Check the line.
(3) Replace the fuse.
(4) Replace the temperature regulator.
(5) Replace the thermocouple.
2.10 does not pull the bag (the bag motor does not run)
This failure is often caused by. Line failure; damage to the proximity of the pull bag; failure of the automatic packaging machine controller; failure of the stepper motor drive.
Method of exclusion:
(1) Check the line to troubleshoot.
(2) Replace the pull bag proximity switch.
(3) Replace the automatic packaging machine controller.
(4) Replace the stepper motor driver.
3 Conclusions It is necessary to quickly eliminate the failure of the automatic packaging machine. It is not necessary to understand the structure and working principle of the automatic packaging machine, but also to find out the cause of the failure and master a set of methods for troubleshooting. change.