Discussion on automatic carton packing machine

In many industries in China, product packaging is a labor-intensive manual work section. It occupies more labor, and workers are highly labor-intensive and prone to accidents. For example, in the brewery packing section, bottled beer explosion injury accidents occur frequently, so the promotion is used. Mechanized packaging will play a positive role in improving labor productivity, improving product packaging, and protecting workers' personal safety.
Automatic cardboard packaging machine that can automatically pack a group of containers into corrugated cardboard boxes that can be shipped or stored. The packaging machine is suitable for cans, bottles and other containers. Depending on the size of the cardboard, the carton may be in the form of a fully enclosed or semi-closed (tray).
This equipment can complete the paperboard folding forming, packaging container and carton spray seal all the processes, in addition can be combined with the container's filling equipment into a fully automatic production line.
The machine has a wide range of application, high degree of automation, convenient operation, stable performance, and the packaged product has a stable shape, firm bonding, convenient storage and transportation, and tight packaging (generally no bottle spacer is required). It can be widely used in food, beer, beverages and other daily chemical industries.
1 Overview This equipment is composed of feeding conveyor belt device, cardboard warehouse, packing mechanism, lifting mechanism, forming and pressing device, lubrication system and other components.
1.1 Packaging Process The packaging process is shown in Figure 1. Fig.1 Flowchart of packaging process Filled containers are entered by the conveyor belt. The manager bottle device enters the feed port after being divided into rows. When the container is jammed, the monitoring device will send a shutdown signal. The containers entering the loading mechanism are arranged according to the packaging requirements. . The single sheet is removed from the paper store by a vacuum suction device. The paper board transport mechanism transports the paper board into place and enters the container under the assembled arrangement. The container then enters the rotary conveying device along with the paper board, and the paper board is adjusted during the descent. Guided by a good box, the board is creased, and the entire process of glue spraying, capping, pressing, shaping, and output of the box is completed during the stepping process of the rotary conveyor.
1.2 Main Technical Specifications Production Capacity: 15 to 28 Cases/Minute Package Size: Long 200-400mm Width 120-300mm High 80-350mm
Cardboard size: length 360-1300mm width 200-780mm
Total power: 9KW
Compressed air: Pressure 0.6MPa Flow > 1.2 cubic meters/minute?
Dimensions x1800
Weight:3500kg
According to different requirements, the machine can adapt to different containers and packages in different combinations by changing some of the components within the technical specifications.
1.3 Auxiliary Material Requirements 1.3.1 Hot Melt Adhesive?
Appearance: light yellow (transparent amber)
Softening point: 110±3°C
Melt viscosity: 2200CPS at 150°C
Hot melt rate: about 5kg/h
Operating temperature: According to the hot melt adhesive number, generally 140-180°C
1.3.2 Cardboard cardboard should be flat and straight, no surface damage, pulling and wrinkling phenomenon.
Cardboard thickness: 2.5-4mm
Corrugated cardboard:
Number of turns 50±2/300mm
Weight 280±14 g/m2?
Die compression strength >36Kgf
Side pressure strength>5880N/m
Breaking strength >784KPa
Puncture strength>50Kg.cm
2 Main Organizations 2.1 Main Drive System The main drive system is shown in Figure 2 and the drive route is as follows:
The main drive motor rotates through a pair of sprocket drive shafts I. The clutch Ml is a safety protection device. When the equipment is overloaded, the safety clutch is disengaged and the motor idles. The fixed couplings M2 and M3 connect the shafts I, II, and III together, and two bevel gears and one spur gear fixed on them respectively transmit the power to the three parts:
After the bevel gear Z3 decelerates through the meshing gear Z4, the drive cam rotates, and the groove cam rotates the sprocket Z5 on the shaft X through the link mechanism, and drives the shaft XI through the sprocket overdrive, causing the pair of gears Z7 to drive the teeth. The bar makes a reciprocating movement.
The bevel gear Z8 decelerates and drives the stepping gear box through the gear Z9 meshed therewith, so that the output shaft V is stepped-driven, and then the chain-like transmission drives the step chain to move stepwise. After the gear Z10 decelerates through the gear Zll, it drives the program cam switch to work. The program cam switch controls the working procedure of the system through the micro switch on it. By adjusting the output speed of the main motor, the operating cycle of the system can be adjusted.
2.2 Feed conveyor belt drive system The feed conveyor belt drive system is shown in Figure 3. The power source of the feed conveyor chain is a speed-regulating motor. Depending on the container, the motor is also used for different options.
The speed-regulating motor 1 drives the upper shaft to rotate through a pair of sprocket wheels, and the sprocket Z3 installed on the I-axis drives the flat-top chain to move, and the load capacity is fed into the input seat of the packing mechanism with the movement of the link plate.
The motor 2 drives the eccentric to rotate and drives the rocker arm so that the roller frame shakes the container forwards and backwards in the conveying direction, and the irregularly arranged containers just entering the conveyor chain form a regular arrangement.
When the conveyor belt is running, adjusting the output speed of the motor 1 can change the conveying speed of the conveyor belt so that the conveying speed can be in accordance with the operating cycle of the main transmission system.
When changing the number of the roller racks and the number of sub-rails of the unscrambler device and the spacing between them, it is possible to adapt the containers for different combinations of containers.
2.3 Paper Holder Suction Mechanism The cardboard used for the packaging container is stacked on the paper storage rack. The suction cup is driven by a cylinder. When the suction cup is lifted to the bottom of the paperboard, the suction sucks the single paper board onto the suction cup. When the cardboard is moved down to the paper library guide The sucker vacuum is released, which completes the cardboard attraction.
2.4 Cardboard conveying mechanism After the cardboard is sucked onto the paper guide, the push rod on the paper pushing mechanism is driven by the cylinder to push the paper board forward and enters the paper guiding system.
Puller drive system shown in Figure 4
The main drive route is: Motor Zl/Z2-I-Z3/z4-II.
The worm deceleration motor drives the upper shaft to rotate through a pair of sprocket wheels. The surface of the output wheel mounted on the I-axis is silicone rubber. The cardboard passes between the output wheel and the bearing on the shaft III, and then enters a pair of teeth. The belt pulley speeds up, and is equipped with a rubber ring roller (roller mounted on the shaft II) and a bearing mounted on the shaft IV. The friction force of the two pairs of rollers pulls the cardboard into position.
2.5 Packing and Retaining Device The packing mechanism and the bottle keeping device are combined to form a system. The packing head is driven by the cylinder to move half the diameter of the container, so that the containers that have been assembled according to the packing requirements fall on the paperboard that has been transported into place. The bottle keeping device is to keep the continuously fed containers above the head of the packing box. .
2.6 Lifting and Slewing Mechanism The lifting pallet is installed on the top of the rack. The rack is driven by the main drive system to make it move up and down. It drives the pallets up or down together and rises up to the most business point. When the container is held together and dropped to the lowest point, the pallet is flat with the swing chain channel, and the cardboard and the container enter the rotary chain channel. Stepping movement is driven by the stepping gear box driving mechanism in the main transmission system. When the lifting pallet drives the cardboard and the container down to the plane of the turning chain channel, the turning chain drives the carton to move one station.
2.7 Spraying, folding, pressing, and shaping agencies Spraying adhesive on the top and on both sides, the starting position and length of the adhesive can be adjusted through PLC parameter settings. When the top spray glues the bundle, the folding plate under the action of the air cylinder and the crank removes the folding tongue of the carton and covers it. In the next step-feeding process, both side sprays and the folding of both sides of the flap are completed. When the stepping is finished, the carton is in the pause state of the next station. At this time, the upper cover pressurizing mechanism and the side press mechanism perform the compaction of the carton under the action of the cylinder to complete the bonding, so that the finished box is conveyed at the next step. To the exit.
3 Pneumatic Control System There are three sets of pneumatic control systems:
The control valve in the paper library suction cup, cardboard push and vacuum control system are combined together to form a collection bank of the paper bank. The paper suction cylinder is a double cylinder. When the external air source makes the double cylinder rise to the bottom of the cardboard warehouse, the suction cup pulls vacuum, sucks the single sheet of paper from the paper store, and descends to the paper board feeding passage, and the cardboard is moved by the paper pushing cylinder to send the paper board to the paper feed rack On the device.
The packing mechanism is combined with the control valves in the preserving device system to form a collection valve assembly block. Packing cylinder action, packing arrangement plate moves position, the container falls on a cardboard that has been brought to position, when the packing cylinder is about to act, the protective bottle cylinder moves, and the packing mechanism is input into the seat without boxing The grouping container is compacted so that it cannot move.
The top cover of the carton is folded, pressed and pressed. The upper cover presses the plastic and the side cover presses the control valves together to form a collection valve assembly block. The cartons are to be folded and pressed after the spraying, and the cartons are pressed to compress the mechanism (including upper cover press and side press emergency). The mechanical devices in these parts can be adjusted so that the cylinder stroke is fixed. Can also change the position of the folder and the compaction lever to meet the needs of the changed objects.
4 The integration of light, gas, machine and electricity in the fully automatic cardboard box packaging machine of the electrical system requires rapid response and accurate execution of electrical control. With close cooperation, so the electrical operating system selects Siemens S5-115U programmable logic controller control, with the cam program controller, photoelectric switch, electromagnetic switch, etc., To make the control simple and efficient, reliable operation, easy adjustment. The system is known for its ruggedness and performance. Its S5-115U programmable controller is one of the best, faster, and the execution time of each 1K statement is about 18ms; adopting modular design, quick installation, flexible and convenient operation; its expansion function and communication function are strong and simple. With the upper computer network, unified monitoring and management, wells can carry out error diagnosis and instructions, easy to use.
The machine's hardware configuration includes the PS951 power module, CPU module (10 RAM), two 32-point input modules, and two 32-output modules. In addition to a monitoring and operation unit, the unit OP393 is set to pass the product type and speed. It is easy to modify the settings of some time parameters of the user in the PLC in order to achieve different spray time and speed. Its user program is solidified in the EPROM subroutine board (8K). Even without a battery, the program will not be lost.
User programming using STEP5 language, available control system flowchart (CSF), statement table (STL), ladder diagram (LAD) prepared for computer, easy to write and read, and the program structure is optimized and more standardized. The machine's 11 actions and motor control are programmed in program blocks (PB). Marked interrupts are written in function blocks (FBs), data is placed in data blocks (DBs), and organization blocks (QBs) are called to handle them collectively. User program meter 2. Lk, taking a glue spraying program as an example, compiling it in program block PB6, and calling it by organization block OB1. The program is written in the flow chart as follows:
I2.4 is the cam program switch input signal, F3.7 and F4.0 flag registers 10..O and IO.7 are conditional control inputs and the glue solenoid valve is controlled with output Q14.7. The timer T15, T16 loads the corresponding data word of the data block dbl01 (input by the organization block OB1) as the preset value, this Xiang, through the OP393 changes the DB101 data word DWl5, the DWl6 value, may control the glue spray solenoid valve The state of the action, thus achieving different packaging and speed.
The machine's protection and indication function is very strong, high degree of automation, easy operation. Can carry out automatic and manual operation, manual, each action can be individually performed and check the adjustment, and use the digital tube to 0-A and indicator light to operate, and monitor the machine status, report the operator in the form of light, when chasing Call the police.
5 The glue spraying system consists of a hot melt device, a spray hose and a spray head. The hot melt melts the solid hot melt glue into a liquid. The liquid glue is sprayed on the top cover and the side cover through the spray hose and the spray gun to make the side of the carton. Sealed at the top.
System Features:
Digital display: user set humidity, actual humidity and faults are automatically displayed;
Programmatic heating: the order is melt