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Working principle of automatic pillow packing machine

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Who can tell me how the machine seals the product?

the operation of the variable frequency stepless speed regulation motor for the full-automatic pillow packaging machine drives the gear chain stepless transmission through the triangular belt. Through the speed regulation of the variable-speed chain in the gearbox, different operating speeds are obtained, so that the adjustment of the paper film conveying length and the output shaft of the gearbox drive the paper film pressing roller to rotate and convey the paper film through the chain transmission. The setting of the paper film output length can be manually operated on the gear chain governor

it is monitored by photoelectric tracking color code during packaging. At the same time, the gearbox is also driven by multiple groups of chains to realize the packaging of objects. Movement of conveyor belt, paper drawing wheel, pressing wheel, transverse sealing knife and finished product conveyor belt

the conveyor belt will automatically transport the packaged objects to the packaging position, package them in paper film, then press them into shape after heating, and send them to the transverse sealing cutter for heat sealing, transverse sealing and cutting. Then the finished product is output by the conveyor belt

the full-automatic pillow packaging machine is an automatic continuous shrinkage packaging equipment, which uses quartz far-infrared tube for heating, saving electricity and high efficiency (saving electricity by more than 15%); The shrinkage temperature and motor transmission speed are stable and adjustable, and the adjustment range is wide; The original roller rotation device can work continuously. It is designed for the packaging of solid objects. It is suitable for packaging all kinds of solid objects with rules, such as food biscuits, bread, moon cakes, candy, daily necessities, industrial parts, etc

for bulk objects or individual separated objects, the wrapped objects must be placed in the box first, or bound into a whole to form a whole before they can be packaged on the machine. This is also required for other non-solid wrapped objects

working principle of full-automatic pillow packaging machine:

the operation of variable-frequency stepless speed regulation motor for full-automatic pillow packaging machine drives the gear chain stepless transmission to rotate through the triangular belt, and different operating speeds are obtained through the speed regulation of the variable-speed chain in the transmission box, and then transmitted to the planetary differential mechanism by the synchronous belt to adjust the paper film conveying length The output shaft of the gearbox drives the paper film pressing roller to rotate and transport the paper film through the chain drive. The setting of the output length of the paper film can be manually operated on the gear chain governor. It is monitored by photoelectric tracking color code in the packaging process. At the same time, the gearbox is also driven by multiple groups of chains to realize the packaging of objects

movement of conveyor belt, paper drawing wheel, pressing wheel, transverse sealing knife and finished product conveyor belt

  The packaging paper film roll of the full-automatic pillow packaging machine is installed on the shaft roll, and the packaged objects are placed in the feeder (for objects with irregular shape, manual feeding is required). The conveyor belt will automatically transport the packaged objects to the packaging position, package them in the paper film, and then press them into shape after heating, and send them to the horizontal sealing cutter for heat sealing, horizontal sealing and cutting. Then the finished product is output by the conveyor belt

working principle of pillow packaging machine
pillow packaging machine is a continuous packaging machine with strong packaging capacity and can be suitable for
various specifications for food and non food packaging
it can not only be used for the packaging of non trademark packaging materials, but also enable
high-speed packaging with drum materials with pre printed trademark patterns
in packaging production, due to the error between the positioning colors
printed on the packaging materials, the influence of
factors such as the stretching of the packaging materials and mechanical transmission, the predetermined sealing and cutting parts on the packaging materials may deviate from the correct position, resulting in errors. In order to eliminate errors and achieve the purpose of
correct sealing and cutting, the problem of automatic positioning must be considered in packaging design.
most of the solutions to this problem are to complete the design of continuous photoelectric automatic positioning system according to the positioning mark of packaging materials. According to the working mode of error compensation, the continuous photoelectric positioning system is divided into forward and backward type, braking type and synchronous type of two transmission
dynamic system. This paper focuses on the design of forward and backward braking photoelectric automatic
positioning system
1 basic principle of braking photoelectric automatic positioning system
in the process of continuous feeding, forming, bag making, filling and sealing of packaging paper on the automatic packaging machine, due to the printing error of positioning color code, the accidental fluctuation of machine
operation and other comprehensive factors, the
conveying speed of packaging paper is not synchronized with the speed of horizontal sealing and paper cutting, resulting in the deviation of sealing and cutting position
, Therefore, it needs to be corrected at any time and make continuous error compensation. The comprehensive error is a variable, but for packaging materials with high quality and printing accuracy, the error
difference should be kept within a small range in each cycle of detection under a certain packaging speed. This
sample can measure
and compare the paper feeding speed and sealing and cutting speed regularly (once every two bags) through the photoelectric positioning system. If the wrapping paper is too fast,
the positive error system gives a negative compensation amount, that is, the paper feeding mechanism
slows down to achieve compensation; If the wrapping paper is too slow, it is a negative error,
the system gives a positive compensation to increase the speed of the paper feeding mechanism. However,
the given compensation value cannot completely eliminate the error, it may be over compensated,
it may also be insufficient. Even if the error is eliminated, it will appear next time
therefore, the design always makes the system compensate a little too much, and gives a compensation amount
slightly greater than the absolute error value to artificially make it out of tolerance. When
the measurement error is negative, an excessive positive value is compensated. After the next
measurement and comparison, there must be positive errors. The positioning system automatically compensates a given negative value, and then recovers the negative error
in this cycle, the positive and negative alternate to control the error within a certain range. The cut-off part of the
sample wrapping paper jumps around the correct position. This
method of continuous positioning of wrapping paper is called “forward
backward” automatic positioning method. Because its compensation is beyond the operation of the clutch
and the mechanical paper feeding mechanism is designed to have the effect of package
paper loading lag when it enters the work, the
system positioning based on this principle is called “braking forward and backward” automatic photoelectric positioning system. Take the transverse sealing and cutting speed that determines the speed of
packaging paper as the reference benchmark, and adjust the speed of
paper feeding to synchronize with it to control the sealing and cutting position error of packaging paper,
this is the most basic principle of continuous positioning system
2 Analysis of braking forward and backward positioning system
next, the braking forward and backward photoelectric positioning system and the transmission system of packaging machine are analyzed
Fig. 1
the packaging process is as follows: the sheet packaging paper is led out from the drum 1, and then formed by the shaper 5, the traction roller 6 and the longitudinal sealing roller 7
through the optical
electric detector 2. The packing bag filled with packing materials is reshaped up and down and output,
sent to the transverse head 8 through the conveyor belt for transverse sealing and cut off to discharge the finished product. The transmission
part is: the main motor M1 transmits the movement to the transverse seal transmission shaft, and then drives the transverse seal head to drive through the non
constant speed mechanism 9. The unequal speed mechanism is used to adjust the instantaneous sealing and cutting speed of the whole transverse seal head 8 to synchronize it with the moving speed of the packing bag
. The other way can be completed manually or through the control of single-phase servo motor through the adjustment
section of stepless variable speed differential mechanism 13. The required bag length can be obtained by adjusting the
continuously variable differential mechanism 13. The last
path passes through the differential mechanism 18 to the claw conveyor chain. The differential mechanism 18 is a self
dynamic adjustment mechanism, which is mainly used to adjust the hook conveying chain and the transverse head in the same
step
during the packaging process, the photoelectric sensor is used to detect the moving speed of the packaging paper and compare it with the transverse sealing speed to judge whether it is slow or fast. The electrical system of the overrunning
clutch controls the action of the overrunning motor M3 to make it run or stop
braking, so as to achieve the purpose of error compensation
42
Figure 1 Diagram between transmission systems
1. Paper roll 2. Reflective photoelectric head 3. Package 4. Lower paper roller 5. Aligner 6. Traction roller 7. Longitudinal sealing roller 8. Transverse sealing head
9. Unequal speed mechanism 10. Overrunning clutch 11. Main motor 12. Stepless transmission 13. Servo motor 14. Transmission mechanism 15. Speed regulation
mechanism 16. Paper feeding photoelectric sensor 17· Transverse sealing photoelectric sensor 18 · finished product 19 · hook differential mechanism

3 speed detection and packaging paper length measurement
in order to ensure the accurate positioning in the packaging process, the paper feeding speed and transverse sealing notch speed must be accurately measured. At the same time, the length of packaging paper (each piece) in the production process is different, Therefore, it is also very important to automatically measure the length of packaging paper during the positioning process to make it consistent with our production settings
the paper speed is measured by the photoelectric proximity switch 17. We record the pulse period output by the photoelectric proximity switch for measuring the paper speed as
t paper, and its derivative 1 /t paper is the transmission speed of the paper feeding roller. The cutting speed of transverse seal
is measured by photoelectric proximity switch. We record the pulse period output by the photoelectric proximity switch of knife cutting
speed as t knife, and its
reciprocal 1 /T knife is indirectly calculated by the transverse sealing speed. In the packaging
design, the packaging paper is tightly pressed on the paper feeding roller, and the linear speed of the pressing roller
is the paper feeding speed of the packaging paper, V paper = π D /t paper, where D is the diameter of the paper feeding roller. The cut length after the transverse seal notch l paper =
V paper t knife = π DT knife /t paper
4 color code benchmarking method and adjustment
in order to ensure the automatic positioning of packaging, it is necessary to control the servo motor
m2 to synchronize the paper feeding speed with the transverse seal head notch speed. However, for the system set as synchronization, the original synchronization system will be out of step due to accidental fluctuation of operation and operation disturbance. Therefore, it is necessary to
add color code detection and control circuit in the basically synchronous system, correct with
and continuously compensate the error. Ensure that the cutting and sealing position remains unchanged, which
needs to be positioned with the help of the color code on the packaging paper. Color code positioning
benchmarking puts forward certain requirements for packaging materials, photoelectric detection methods, color code printing, etc. As far as packaging materials are concerned, they are required to have high density, uniform slip thickness and certain tensile resistance. Optical
and electrical detection methods can be divided into transmission type and reflection type according to different packaging materials. Transmission is mostly used for the detection of transparent packaging materials, while reflection is
used for the detection of packaging materials that are difficult to transmit light or cannot transmit light. Generally, the reflective photoelectric detection method is mostly used in the design of high-speed packaging machines because it has high detection sensitivity. For color code printing, the positioning color code must be able to block or pass light. At the same time, according to the size of the package and the detection method, the positioning color code must have enough shading area to ensure the reliability of the signal during photoelectric detection
with good packaging materials, proper positioning of color code and correct photoelectric
shading reflective sensor measurement color code method, the color code can be
calibrated and adjusted
the pillow type multifunctional packaging machine designed according to the above principles and methods,
equipped with microcomputer controlled paper length setting and adjustment and color code positioning system, completely solves the problem of automatic photoelectric positioning. The high-speed operation of the system is stable and reliable, and the sealing and cutting is accurate. It is one of the most advanced and ideal machine types at present
reference article Xian
1 Xu Lincheng · principle and design of packaging machinery · Shanghai Science and Technology Press,
1998.19 ~ 21
2 Peng Guoxun · design principle of automatic packaging machine · Xi’an: Northwest Institute of light industry, 1983.85 ~ 88
3 Liu Yunxia · analysis of positioning system of automatic packaging machine · packaging and food machinery,
2000 (2) · 8 ~ 11
4 Jiang Xuzhong · analysis of photoelectric automatic positioning system of pillow candy packaging machine · electromechanical
Engineering, 2001 · (5) (208 ~ 210)

Jane

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