The valve pocket bag making machine can bond the bottom by heat sealing and gluing. At present, the heat sealing process is widely used in the market. Many factors will affect the heat sealing effect of the valve bag. Factors will affect the heat sealing effect of valve bag making machine!

Factors affecting the heat sealing effect of valve bag making machine

1. Heat sealing layer material

The type, quality and thickness of the heat-sealing layer material have a decisive influence on the heat-sealing strength. The thickness of the heat sealing layer material is generally between 20 and 80 μm, especially 100 to 200 μm. The commonly used heat sealing materials for composite packaging include CPE, EVA, CPP, hot melt adhesive and other blending modified films or ionic type. Resin co-extrusion. The heat sealing strength of the same heat sealing material increases with the heat sealing thickness, and the thicker the surface layer material, the greater the heat sealing strength.

2. Heat sealing temperature

The heat sealing temperature affects the direct heat sealing strength, and the unevenness of the melting temperature of various materials directly determines the heat sealing temperature. The practically selected heat-sealing temperature is often higher than the melting temperature of the heat-sealing material, which is affected by the heat-sealing pressure, the bag-making speed and the thickness of the composite substrate. The smaller the heat sealing pressure, the higher the required heat sealing temperature; the faster the machine speed, the higher the required heat sealing temperature. If the heat-sealing temperature is lower than the softening point of the heat-sealing material, it is difficult to make the heat-sealing layer truly seal. If the heat sealing temperature is too high, it will reduce the heat sealing strength of the seal and the impact resistance of the bag, and it is easy to damage the melt extrusion of the heat sealing material at the welding edge.

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Details can be accessed by clicking here:https://www.lyhuatianm.com/products-information/heat-sealing-effect-of-valve-bag-making-machine.html

Forging is a processing method that uses a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size. Forging (forging and stamping) is one of the two major components.

Through forging, defects such as as-cast looseness produced by the metal during the smelting process can be eliminated, and the microstructure can be optimized. At the same time, due to the preservation of the complete metal streamline, the mechanical properties of forgings are generally better than those of castings of the same material. So do you know the three basic principles in the forging process? Below, the relevant personnel of Chinese professional forging manufacturers will give you a detailed introduction, let’s learn about it together!

1. THE PRINCIPLE OF CONSTANT VOLUME

When forging each forging, the material should be calculated first, and the material should be cut according to the weight and fire consumption of the forging. (The basic formula for calculating the material G = ρV G – the weight of the billet ρ – the specific gravity of the material V – the volume of the billet) When calculating the material, the volume of the raw material must be calculated (due to the different specific gravity of various raw materials) and then multiplied by the specific gravity to get the forgings The weight of any forging is closely related to the volume before and after forging, such as pier thickening, drawing length, punching, mandrel drawing length, shoulder pressing, misalignment, bending and twisting during forging. Its overall volume remains the same, but the shape is changing, such as from a circle to a square, from a square to a circle, from an octagonal to a circle, etc., but the volume remains unchanged.

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For more details click to visit:https://www.gold-emperor.com/forging-principle/

We all know that when the excavator is working, it can twist left and right, front and rear mainly by the slewing mechanism in the machine, and the slewing bearing plays a vital role as an important part of the slewing mechanism. When assembling and overhauling and using and maintaining the excavator slewing bearing, the debugging of the slewing mechanism will be carried out, and the tightness of the assembly structure of the excavator slewing bearing requires us to master the correct operation method to avoid misadjustment. So what are the precautions for the debugging of the excavator slewing bearing?

The debugging of the excavator slewing bearing generally refers to the debugging of the backlash between the output gear of the slewing reducer and the ring gear of the slewing bearing. The proper adjustment of the inter-gear yard not only ensures that the pinion gear and the large gear do not gnaw and cut each other, but also ensures that the excavator rotates and brakes smoothly. Under normal circumstances, the eccentric distance between the center of the pinion and the installation and positioning center of the rotary reducer is used, and the center distance between the pinion and the large gear is changed by rotating the rotary reducer, thereby changing the tooth side clearance of the gnawing gear to debug the rotary mechanism.

Since the sway of the excavator’s slewing brake is caused by the slewing reducer, the operator often mistakenly thinks it is caused by too large backlash, so he tries to adjust the backlash by rotating the slewing reducer. After the rotary reducer rotated a screw hole position, it was found that the debugging results were not satisfactory, and then another screw hole position was rotated.

1. Before debugging the slewing bearing mechanism of the excavator, it is necessary to identify the gear teeth with large radial full runout of the pitch circle of the gear on the large gear and the direction of the midpoint of the pinion of the slewing reducer.

2. The slewing mechanism can only be debugged when the gear teeth on the pinion and the gear pitch circle on the big gear with full beating in the radial direction are engaged, that is, the slewing reducer can be rotated. There will be no interference between the gear and the big gear, and the big gear cannot be gnawed.

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For more details click to visit:https://www.excavatorbearing.com/a/bearing-knowledge/precautions-for-debugging-of-excavator-slewing-bearing.html

We all know that the crossed roller bearing is one of the commonly used bearings for robots, and it also plays a vital role. Industrial robots are also very common in industrial production, achieving refinement that humans cannot do, and robots will never tire. Can work all the time, which has played a great role in the production and processing industry. So what are the application forms of industrial robot bearings?

Industrial robot bearing application form

1. Machine tool loading and unloading robot

Single machine loading and unloading is a typical and mature application of robots on machine tools. It is more accurate, fast and safe than manual loading and unloading. For the processing of small and medium parts of crossed roller bearings with large production batches and short processing times, or heavy workpieces that need to be hoisted, the advantages of robot loading and unloading are obvious.

The crossed roller bearing is used in the robot. The structural relationship between the robot and the machine tool is divided into two forms: the robot is installed outside the machine tool and the structure is formed with the machine tool. Robots installed outside the machine tool are divided into fixed, mobile and truss types.

2. Stand-alone machine tool loading and unloading robot

The single-machine version of the truss robot is equipped with automatic loading and unloading equipment for a single CNC machine tool to meet the single-process automatic production of parts. The truss adopts high-strength steel beam, double-column structure, pure modular design, suitable for automatic loading and unloading of various workpieces such as shafts, discs, and rings. It has the advantages of flexibility and universality, fast moving speed, high positioning accuracy and long service life.

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For more details click to visit:https://www.prsbearings.com/a/news/industrial-robot-bearing-application-form.html

The so-called clutch is to use “off” and “on” to transmit the right amount of power. The clutch consists of a friction plate, a spring plate (the tractor uses a disc spring, and the harvester uses a diaphragm spring), a pressure plate and a power take-off shaft. It is arranged between the engine and the gearbox to transmit the torque stored on the engine flywheel. To the gearbox to ensure that the agricultural machinery transmits the appropriate amount of driving force and torque to the driving wheel under different working conditions.

Clutch is a frequently rubbed part on agricultural machinery (friction plate is a wearing part), it will wear with the increase of use time and frequency, which will cause clutch slip phenomenon.

The clutch is the device that connects the agricultural engine and the transmission, and the clutch pedal is the operating device of the clutch. When the clutch pedal is stepped on or lifted, the engine and the transmission will be temporarily separated or smoothly combined to cut off or transmit power, and realize changes in the movement state of agricultural machinery such as starting, shifting, and parking. Slowly lift the clutch until it is fully lifted. If the engine stalls when the clutch is lifted, it means that the clutch is not slipping. If the engine does not stall when the clutch is lifted, it may be a problem with the clutch.

Features of clutch for agricultural machinery

Tractor clutch: The tractor clutch generally uses a double-acting clutch, that is, one way is responsible for walking, and the other way is responsible for power output. Due to structural reasons, the gap between the flange of the clutch pressure plate and the casing is relatively small, especially when the air humidity is high, and the tractor is not used every day (sometimes out of use for several months), so it is bound to be prone to rust. , The adhesion between the pressure plate bracket and the flange is caused by rust, which leads to the incomplete separation of the clutch.

Suggestion: Before using the tractor that has been parked for a long time, the tractor operator should first open the clutch observation port, use a flat-blade screwdriver to turn the clutch assembly, and spray a little rust remover on the three flanges of the clutch pressure plate, and then step on the A few clutch pedals to move it back and forth, and then use the tractor normally for various tasks.

How to operate the clutch

First, press the pedal firmly with the forefoot of your left foot, and step down or lift the clutch pedal with the flexion and extension of the knee and hip joints. Do not use the toes, soles or heels to step on the clutch pedal to prevent insufficient pedal strength or slip off. pedal. The action of stepping on the clutch pedal should be fast and all the way to the end, so that the clutch can be completely disengaged when the clutch pedal is lifted.

It should be determined according to the manipulation situation. Generally, when the working gear is changed to neutral, the clutch pedal can be lifted quickly. When the agricultural machine starts or shifts, the free stroke before the disengagement is not yet engaged can be slightly faster. When the clutch starts to engage When the clutch is fully engaged, the foot should be quickly removed from the pedal and placed under the pedal. When the clutch is not used in the work of agricultural machinery , Do not put your foot on the clutch pedal, so as not to cause the clutch to have a semi-linked phenomenon, affect the transmission torque, and increase the wear of the parts.

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For more details click to visit:https://www.syclutch.com/news/correct-use-of-agricultural-clutches.html