Back sealing packaging machine

ZKB-180KFBack sealing packaging machine

Chapter 1 Purpose and Features

1、 Usage and classification

Suitable for packaging loose and flowable materials such as solid tablets, monosodium glutamate, seeds, sugar, desiccants, granular beverages, tea leaves, and granules (in powder form). Bag making is back sealed bag making (long strip bag) ）

2、 Selection of packaging materials

ZKB-180KFBack sealing packaging machineIt can use various heat sealable composite film packaging materials, which can be printed as continuous patterns or as single bag complete trademark patterns with colored labels.

3、 Characteristics

This series of packaging machines can automatically complete the entire packaging process, including bag making, measuring, filling, sealing, printing batch numbers, cutting and tearing, cutting, and counting.

1. The packaging speed and bag length can be infinitely adjusted within the rated range without the need to replace parts. The bag making length is directly set through an instrument, and the bag is pulled by a stepper motor, ensuring accurate and reliable bag making length.

2. Adopting a double-sided heating sealing device and a four-way temperature control mode, the bag opening is tightly sealed, aesthetically pleasing, and automatically temperature controlled.

3. Using high-quality photoelectric sensors to detect the color code on the packaging bag for positioning control, obtaining the complete pattern of a single bag. It has the function of automatically eliminating false color codes caused by pattern reasons, making the operation stable and reliable.

4. Automatically print production batch number or production date on the packaging bag. (The regular product is printed by a coding machine. If other printing methods are required, please place an order separately)

5. When changing the width of the packaging bag, it is necessary to replace the molding machine with the corresponding specification. A machine is only equipped with one specification of forming machine. If users plan to use one machine to package multiple specifications of packaging bags, they need to purchase forming machines separately.

6. Measurement method: Stepper motor drives screw feeding method.

7. The display screen directly shows data such as the number of production bags and packaging speed.

Chapter 2 Technical Specifications

1、 Performance parameters

[Note] 】Conventional products use a three-phase four wire power supply(Three live wires and one neutral wire, which cannot be replaced by a ground wire. If single-phase is required220VSpecial orders are required for power specifications.

1.main drive section

Powered by the main motor, the distribution shaft is driven to rotate through speed regulating wheels, V-belts, and reducers, enabling synchronous and coordinated work of bag pulling, heat sealing, cutting, measuring and filling, and completing the entire packaging process.

(Direction of packaging material passing through paper)

2.Paper supply section

During the production process of the packaging machine, packaging materials are constantly consumed. Whenever the control rod moves up from its original position due to consumption, the proximity switch sends a signal to drive the paper supply motor to work, causing the paper roller to rotate and send out the packaging materials. The control rod falls back to its original position due to its own weight, and the paper supply motor stops working. Always automatically complete the process of conveying packaging materials.

3. 制袋部分

In practical work, both packaging materials and materials need to go through a molding machine. The packaging materials pass through the outside of the molding machine and are folded into a basic bag shape, while the materials are fed into the packaging bag from the inside.

4. Color code positioning

In order to ensure the integrity of the printed pattern on each packaging bag, color codes are usually printed on the packaging material. The photoelectric sensor (photoelectric head) can detect the color code and send a signal to control the bag pulling motor to position the packaging bag at the same position each time. Therefore, each packaging bag can be cut into complete patterns.

5. Measurement section

Driven by a pair of gears on the distribution shaft and the measuring shaft, the lower and upper turntables rotate through the engagement of the upper and lower clutches, achieving the measurement and filling of the packaged materials. By rotating the adjusting screw ring, the distance between the upper and lower turntables can be adjusted to change the volume of the upper and lower cups installed on the upper and lower turntables, while achieving the purpose of adjusting the weight of packaging materials within a certain range.

Chapter 4 Installation

The machine should be installed in a place with stable ground and no severe vibration. And should avoid direct sunlight on the photoelectric sensor used for detecting color codes, in order to avoid the influence of strong light on the photoelectric sensor.

After determining the installation position, the anchor bolts should be adjusted to ensure the stability of the machine.

The standard power supply for this type of product is three-phase four wire system (380V/50Hz). The supply voltage should be within ± 10% of the standard voltage. If there is only a single-phase 220V power supply available locally, please place a special order. If the local power supply voltage is unstable and exceeds the range of ± 10, please consider installing an AC voltage regulator to ensure the normal operation of the machine.

Before connecting the power supply, it is necessary to check whether all parts of the machine are intact and whether the screws are loose. Are there any loose wires or fastening screws inside the electrical box.

The machine body is connected to a "neutral" wire (N wire) for protection. If the user uses a three-phase five wire system, the after-sales service personnel can change the wiring method according to the user's requirements.

Rotate the main motor drive belt by hand to rotate the distribution shaft once. Only after confirming that there is no jamming or collision between parts, can the machine power be turned on.

After connecting the power supply, turn on the machine power switch, and then briefly turn on the work switch. Check that the distribution shaft should rotate clockwise. If not, disconnect the machine power supply and adjust any two of the three-phase power lines to the same position.

Chapter 5 Operating Methods and Steps

Onepackaging machinePreparation before startup

1. Check whether the cup and forming device installed on the machine meet the required specifications, and whether the packaging materials meet the usage requirements.

2. Pull the clutch handle downwards and then to the right to disengage the upper and lower clutches.

3. Rotate the upper turntable counterclockwise by hand once, and during the rotation, the discharge door below the lower turntable should be able to open or close smoothly. Attention: When adjusting the capacity by rotating the adjusting screw ring, the height of the door lever should be adjusted appropriately at the same time, so that the door lever does not press against the discharge door and can smoothly open or close the discharge door.

4. Place the packaging materials on the paper rack shaft, attach the paper stop wheel and sleeve, and then place them on the cardboard rack. Please note that the printing surface of the packaging material should face outward. Align the center of the packaging material vertically with the vertical center of the molding machine, then clamp and tighten the locking knob of the paper stop wheel and cover.

5. Pull down on the packaging material and insert it into the molding machine. Pull down and place it between the two rollers, then manually pull the film on the screen and rotate the rollers to pull down the packaging paper until it enters the cutting blade.

two.Empty bag operation

The machine has undergone comprehensive debugging, operation, and inspection before leaving the factory, and users can use the machine without making major adjustments. In order to enable the operator to proficiently use the machine, careful inspection and subtle adjustments can be made to the relevant parts during the operation of the empty bag.

3、 Set sealing temperature

Turn on the power switch and set the sealing temperature values for vertical and horizontal seals on the temperature control instrument according to the packaging material used(℃)When setting, the vertical sealing temperature should generally be lower than the horizontal sealing temperature10Around ℃. The following are reference values for sealing temperature of commonly used materials.

The heat sealing temperature is related to the type of packaging material, and in the same type of material, it is also related to the material and thickness of the material. In addition, it is also related to packaging speed and sealing pressure. When adjusting, relevant factors should be comprehensively considered. The principle is to ensure that the packaging bag is tightly sealed, flat, with clear mesh patterns and no deformation.

4、 Adjust the sealing pressure

*Closed state. At this point, the centerline of the left and right heat sealer bodies should be aligned with the meshing line of the two bag rollers below. Observe the contact surfaces of the left and right heat sealers to see if there are any loose fitting areas in the longitudinal or transverse sealing parts. If there are, adjust them so that the two planes in contact are parallel and tightly fitted.

When adjusting the left or right heat sealer body, first loosen the fastening nut, and at the same time loosen the fastening nut of the longitudinal or transverse seal adjustment screw. When rotating the longitudinal or transverse seal adjustment screw clockwise, the relevant parts of the longitudinal or transverse seal can be pressed inward, which increases the sealing pressure. If the adjustment screw is rotated counterclockwise, the sealing pressure can be reduced. When reinstalling and debugging the heat sealer body, you can first manually tighten the adjustment screws and adjust the pressure of the screws on the heat sealer body by hand. When you feel that the pressure of the three adjustment screws on the heat sealer body is similar, use a wrench to rotate clockwise by 1/4 turn each, and then tighten the fastening nut. Start the machine to continuously seal several bags and observe whether the packaging bags are tightly sealed. If the sealing is not tight, increase the pressure appropriately for sealing experiments. The adjustment of longitudinal and transverse sealing pressure is interrelated, and adjusting one of them will inevitably affect the other. Therefore, patience and meticulousness are necessary during the adjustment process. Until the seal is intact.

note：During regular adjustments, the screw should be adjusted with both forward and backward movements to maintain a certain sealing pressure. One should understand the principle that reducing pressure in one place is equivalent to increasing pressure in another place. Never always turn the screw inward to cause excessive sealing pressure. At this time, the machine's noise will significantly increase, wear will worsen, and even problems such as upper shaft breakage may occur.

5、 Knife adjustment

After passing the packaging material through the molding machine, pull it down and place it between two rollers. Rotate the rollers by hand (for Type 4 machines, you can manually pull the film button) to pull down the molded packaging material with the rotation of the rollers. After setting the length of the bag, turn on the machine and seal several bags continuously. Align the center of the color mark closest to the horizontal seal with the center of the horizontal seal channel (rotate the roller by hand). At this point, rotate the lifting handwheel to move the knife holder up and down, aligning the blade of the fixed knife with the center of a certain color mark (align with the center of the horizontal sealing channel if there is no color mark).

When installing and debugging a new cutting blade, first loosen the locking nut of the adjustment screw of the fixed blade, then turn it outwards appropriately, and then loosen the fastening screw. Use your hand to retract the fixed blade until there is a gap of about 1 millimeter between the two blades. At this point, slightly tighten the fastening screw, and then use your right hand to continuously swing the rotating blade while slowly rotating the adjustment screw clockwise with your left hand, so that the two blades gradually approach in parallel. Adjust the gap between the two blades to the minimum without collision based on your hand feel and sound.

When the gap between the two blades is adjusted to 0.01 millimeters, it is optimal (or there may be slight contact). During actual debugging, the packaging bag can be cut and tested simultaneously.

【Warning】When adjusting the knife, the power should be turned off to avoid personal injury accidents

6、 Adjust the photoelectric sensor(Photoelectric head)sensitivity

Turn on the power switch and photoelectric switch, and the light spot emitted by the photoelectric sensor will shine on the packaging material. Adjust the front and rear distance of the cardboard (usually around 10 millimeters) to make the light spot clearest. Then, one hand holds the packaging paper and continuously moves it up and down inside the cardboard, while the other hand slowly rotates the sensitivity knob until the light spot shines on the color code and the indicator light of the photoelectric sensor lights up. At this point, continue to slowly rotate the sensitivity knob until the indicator light goes out, and then retract the knob to half the angle from when the indicator light is on, which is the appropriate position.

【prompt】When the packaging paper slides inside the cardboard, the surface of the paper should be very smooth and there should be no swinging. For this reason, the gap between the slides of the cardboard should be as small as possible without sandwiching the paper. If not, it should be corrected or an appropriate thickness of hard paper can be inserted. This issue is particularly important when using bright packaging materials.

When using packaging materials with bright surfaces, it is difficult to adjust the sensitivity. In addition to paying attention to the above prompts, you can also cut a piece of frosted glass with a thickness of ≤ 3 millimeters that is the same size as the paper surface of the guide board. Apply glue on one side of the frosted surface and stick it in front of the paper surface of the guide board. It can effectively filter out the brightness of the packaging material in the light spot area, making it easy to adjust the photoelectric sensitivity and run smoothly.

7、 Determine the position of the photoelectric sensor

Firstly, align a color mark on the packaging bag with the center of the horizontal sealing channel, and then move the photoelectric sensor to make the light spot

Shine on the lower edge of a color mark (even if the light spot shines on both the inside and outside of the lower edge of the color mark), and tighten the nut. Turn on the machine and if the cutting blade is found to be cutting above the color mark, adjust the position of the photoelectric sensor upwards. Conversely, adjust the position of the photoelectric sensor downwards until it can cut to the center of the color mark.

8、 Set bag making length

1. For packaging materials with colorless labels, set the bag length according to actual requirements. Please refer to 'Controller Usage'

2. For the bag length setting of packaging materials with color codes, please refer to Appendix "Controller Usage".

3. Due to factors such as printing, deformation of packaging materials, and wear of rollers, the actual bag length may be less than the set value. In this case, only a slight correction of the set value is needed.

9、 Bag making adjustment

The appearance quality of packaging bags is related to the temperature and pressure of heat sealing, as well as the position and angle of the forming machine. Therefore, it is crucial to carefully adjust the state of the forming machine. The front, back, left, and right positions of the molding machine should align the two paper (film) edges of the formed packaging bag inside the roller, and the inner edge of the longitudinal sealing channel should be more outward than the outer edge of the roller indentation1About millimeters to avoid being crushed by the rollers due to the materials inside the packaging bag. If the packaging bag has two paper (film) edges misaligned after continuous sealing, the fastening screws of the molding machine should be loosened appropriately and the molding machine should be moved slightly towards the side with the edge length. After several adjustments, the two sides can be aligned.

Chapter 6 Fault analysis and troubleshooting

Chapter 7Maintenance and Care

1、 Lubrication

1. Regularly lubricate the meshing points of each gear, the oil injection holes of the seat bearing, and all moving parts with engine oil, once per shift.

2. The gearbox is strictly prohibited from operating without oil,operation300Clean the interior and replace it with new oil after hours, and then work every timeReplace the oil after 2500 hours.

Recommended lubricating oil

When adding lubricating oil, please be careful not to drip the oil onto the drive belt to prevent slipping, loss of rotation, or premature aging and damage of the belt.

2、 Cleaning

1. After shutdown, the measuring part should be cleaned in a timely manner. For packaged materials with high sugar content such as granules, it is necessary to ensure that the machines are cleaned every shift.

2. Regularly clean the heat sealer body to ensure that the packaging bags are tightly sealed and have clear patterns.

3. Scattered materials should be cleaned up in a timely manner to maintain the cleanliness of the components and extend their service life.

4. Regularly clean the light-emitting area of the photoelectric sensor to ensure its normal operation.

5. Regularly clean the dust inside the electrical control box to prevent electrical short circuits, poor contacts, and other malfunctions.

3、 Maintenance

1. Regularly check whether the screws in various parts are loose.

2. The electrical part should be waterproof, moisture-proof, and rodent proof. Ensure that the electrical box and wiring terminals are clean.

3. When shutting down, the left and right heat sealers should be in the open position to prevent damage to the packaging materials.