The composition of vacuum packaging machine: vacuum pump, motor, vacuum chamber, sealing strip, plexiglass plate cover, airbag, solenoid valve, etc. Vacuum packaging machine
1, upper and lower vacuum chambers and seals
The vacuum packaging machines commonly referred to so far are chamber-type structures consisting of an upper vacuum chamber, a lower vacuum chamber, and a seal ring placed between upper and lower vacuum chambers. The upper and lower vacuum chambers are generally made of aluminum alloys after casting by milling or stainless steel sheet after welding or flattening after welding. There are also upper and lower vacuum chambers using aluminum alloy and stainless steel respectively. Aluminum alloys have common alloys and aluminum-magnesium alloys. The latter are resistant to acids, alkalis and corrosion. However, the cost is relatively high. The aluminum alloy vacuum chamber is milled and machined. Its sealing plane and sealing groove plane are very smooth, and the vacuum chamber has good sealing performance. The thickness of stainless steel sheet is usually 2-4mm, the thickness is thin and the vacuum is easily deformed to cause cracking of the weld seam and leakage of the vacuum chamber. In addition, a seal groove is generally formed on the stainless steel upper surface of the vacuum chamber, and the sealing groove is affected by the processing process. Flatness is poor, vacuum chamber sealing performance is reduced accordingly. At present, some models have vacuum chambers using aluminum alloy casting after the sealing groove milling, the next vacuum chamber using thick stainless steel plate into a flat plate type, take its strengths, make up for their short. In the case of packaging, packing solids, granules and other relatively dry and non-corrosive materials, can use aluminum alloy material, and packaging with soup, materials containing salt, acid composition, can use stainless steel or aluminum magnesium alloy material . The seal ring is generally made of silicone rubber and black rubber. A few low-grade products adopt foam rubber. The silicone rubber has high temperature resistance, corrosion resistance, good sealing performance, long service life, poor sealing property of the foam rubber, easy to fall off, and short service life.
2. Upper vacuum chamber opening, displacement and balance device
The commonly used vacuum packaging machine has two kinds of single chamber and double chamber, and the single chamber is flap type. There are two sets of brackets at the back of the upper and lower vacuum chambers. In the middle, there is a long axis that wears double torsion springs and is balanced by double torsion springs. Force, opening angle 45-75 degrees. The double chamber is reciprocating, the lower vacuum chamber is divided into two left and right studios, the upper vacuum chamber is supported by the four connecting rods and the left and right displacements, the four connecting rods are fixed on the two long shafts, and the long axis has the tension spring forks. The two tension springs are positioned on the lower part of the frame, and the upper part is positioned on the tension spring forks to balance the operation of gravity. The two long shafts are positioned by two sets of bearing seats, and the upper part of the four connecting rods are also fitted with miniature bearings. , so the left and right displacement is very easy, a little pressure in the vacuum start, after the return air can automatically open. The four connecting rods supporting the upper chamber of the displacement chamber must be parallel to each other on the front and rear of the vacuum chamber. The two groups of left and right connecting rods must also be kept relatively parallel to ensure that the upper vacuum chamber is at the same location as the lower vacuum chamber Keeping parallel, otherwise, the upper and lower vacuum chambers cannot be kept parallel, the operating pressure is obviously increased, and even when it is serious, the vacuum cannot be established normally.
3, hot pressing sealing device and printing device
The device is installed in a vacuum chamber. There are usually two groups and one group. Generally, the single room flap type movable part is installed in the lower vacuum chamber, and the double chamber reciprocating movable part is installed in the upper vacuum chamber, and the active part device mainly consists of the following Components, heat sealed air chamber frame fixed in the upper vacuum chamber, two heads with guide column, spring reset device, hot press frame seat with two guide bushes, set on the guide post, heat sealing air chamber frame and hot pressing There is a heat-sealed air chamber between the seats (also known as the vacuum chamber is an atmospheric chamber, and the heat-sealed air chamber is a small air chamber). The heat-sealing air chamber has a plastic water pipe, and the two ends are clamped by a clamp pipe, and also have a bicycle or a rickshaw. Inner tube rubber water glue processing, there is a gas nozzle in the middle, hot pressing frame seat is fixed with epoxy plate processing hot pressing frame body, two ends have reeling shaft, nickel-chromium alloy belt is wound by reeling shaft , outside the bread has a heat-sealed linoleum. The fixed part device mainly consists of a printed rubber strip frame and a printed rubber strip. The printed rubber strip is processed by a heat-resistant silicon rubber. A flat surface is provided with a diagonal or straight grain, and the other side is provided with a round hole or a square hole. Words or squares are embedded in them. At the same time, the seal is printed with a bumpy and transparent production date. If a colored print is required, a ribbon printer is additionally required.
4, vacuum pump, vacuum gauge and vacuum solenoid valve
There are two kinds of vacuum pump installation methods, one is built-in type, usually use XD-020, XD-040 type single-stage rotary vane vacuum pump, general 400 type packaging machine uses XD-020 pump, 500 type packaging machine uses XD-040 pump There are also some manufacturers using two XD-020 pumps instead of one XD-040 pump to reduce costs, but the XD-020 pump is 2880 rpm, high speed, fast wear, short service life, and the XD-040 pump is 1440 rev / min, low speed, large force, relatively extended service life. The other is an external type, usually 2X-15 two-stage rotary vane vacuum pump, the pump pumping rate is fast, the vacuum degree is higher than the single-stage pump, generally suitable for large production batch, high vacuum requirements, or requirements Install outdoors to reduce exhaust pollution.
Vacuum gauge is usually used in front of the axial, mounted on the front panel or the fuselage, commonly used ¢60 table, the accuracy of 2.5; ¢100 table, the accuracy of 1.5.
Vacuum solenoid valve usually uses two, one for the ¢5 two three-way solenoid valve, the main role is to control the thermal compression sealing device up and down displacement work. The other is the ¢15 two-position two-way solenoid valve, the main role of the vacuum, heat sealing is completed, open the path, so that the atmosphere back to the vacuum chamber, or the vacuum chamber can not be opened.
5, time relays, transformers and AC contactors.
The time relay usually uses two, one controls the vacuum time, often uses 30S or 60S; The other only controls the heat sealing time, often 5S or 6S. There are three types of commonly used models, one is an external JS14A-y type, the body is mounted on an electrical circuit board, the adjustment knob is mounted on the operation panel; the other is a turntable type, the body is mounted on the operation panel, and the body has a large Turntable; There is also a digital display, installed in the operating panel, vacuum with 0-99S, heat sealing with 0-9.9S.
The transformer is usually two, the smaller is the control transformer, input 380V, output 220V to provide control circuit power supply, output 6.3V to provide indicator power. Larger ones are heat-sealed transformers, generally 400W for a 400-type packaging machine, 600W for a 500-type packaging machine, and 380V for a small input (a small amount of 220V for a single-phase power packaging machine). The output is usually 20-36V divided into five grades, and the first grade is 20V. The heat seal current is the smallest, and the 36V heat seal current of the fifth gear is the largest.
There are usually two AC contactors, one for controlling the vacuum pump and the other for controlling the heat-sealing transformer. The working voltage is 220V and the operating current is 10A.
Because the operating voltage of the control circuit is 220V, the working voltages of the time relay, vacuum solenoid valve, AC contactor, counter, etc. are all 220V.
Vacuum packaging machines, including food vacuum packaging machines, are made up of vacuum systems, pumping and airtight sealing systems, thermocompression sealing systems, and electrical control systems. The external pumping vacuum packing machine is to seal the bag into a low vacuum and seal it automatically immediately. Because of the high degree of vacuum inside the bag, there is little residual air, which inhibits the proliferation of bacteria and other microorganisms, and avoids oxidation, mildew and spoilage of the articles. At the same time, for some soft goods, after being packed by an automatic vacuum packaging machine, the packaging volume can be reduced to facilitate transportation and storage. The principle of desktop vacuum packaging machine is plastic composite film or plastic aluminum foil composite film packaging materials, solid, liquid, powder, paste-like food, food, fruit, pickles, preserved fruit, chemicals, electronic components, precision instrumentation, Rare metals such as vacuum packaging or vacuum inflatable packaging.
1, upper and lower vacuum chambers and seals
The vacuum packaging machines commonly referred to so far are chamber-type structures consisting of an upper vacuum chamber, a lower vacuum chamber, and a seal ring placed between upper and lower vacuum chambers. The upper and lower vacuum chambers are generally made of aluminum alloys after casting by milling or stainless steel sheet after welding or flattening after welding. There are also upper and lower vacuum chambers using aluminum alloy and stainless steel respectively. Aluminum alloys have common alloys and aluminum-magnesium alloys. The latter are resistant to acids, alkalis and corrosion. However, the cost is relatively high. The aluminum alloy vacuum chamber is milled and machined. Its sealing plane and sealing groove plane are very smooth, and the vacuum chamber has good sealing performance. The thickness of stainless steel sheet is usually 2-4mm, the thickness is thin and the vacuum is easily deformed to cause cracking of the weld seam and leakage of the vacuum chamber. In addition, a seal groove is generally formed on the stainless steel upper surface of the vacuum chamber, and the sealing groove is affected by the processing process. Flatness is poor, vacuum chamber sealing performance is reduced accordingly. At present, some models have vacuum chambers using aluminum alloy casting after the sealing groove milling, the next vacuum chamber using thick stainless steel plate into a flat plate type, take its strengths, make up for their short. In the case of packaging, packing solids, granules and other relatively dry and non-corrosive materials, can use aluminum alloy material, and packaging with soup, materials containing salt, acid composition, can use stainless steel or aluminum magnesium alloy material . The seal ring is generally made of silicone rubber and black rubber. A few low-grade products adopt foam rubber. The silicone rubber has high temperature resistance, corrosion resistance, good sealing performance, long service life, poor sealing property of the foam rubber, easy to fall off, and short service life.
2. Upper vacuum chamber opening, displacement and balance device
The commonly used vacuum packaging machine has two kinds of single chamber and double chamber, and the single chamber is flap type. There are two sets of brackets at the back of the upper and lower vacuum chambers. In the middle, there is a long axis that wears double torsion springs and is balanced by double torsion springs. Force, opening angle 45-75 degrees. The double chamber is reciprocating, the lower vacuum chamber is divided into two left and right studios, the upper vacuum chamber is supported by the four connecting rods and the left and right displacements, the four connecting rods are fixed on the two long shafts, and the long axis has the tension spring forks. The two tension springs are positioned on the lower part of the frame, and the upper part is positioned on the tension spring forks to balance the operation of gravity. The two long shafts are positioned by two sets of bearing seats, and the upper part of the four connecting rods are also fitted with miniature bearings. , so the left and right displacement is very easy, a little pressure in the vacuum start, after the return air can automatically open. The four connecting rods supporting the upper chamber of the displacement chamber must be parallel to each other on the front and rear of the vacuum chamber. The two groups of left and right connecting rods must also be kept relatively parallel to ensure that the upper vacuum chamber is at the same location as the lower vacuum chamber Keeping parallel, otherwise, the upper and lower vacuum chambers cannot be kept parallel, the operating pressure is obviously increased, and even when it is serious, the vacuum cannot be established normally.
3, hot pressing sealing device and printing device
The device is installed in a vacuum chamber. There are usually two groups and one group. Generally, the single room flap type movable part is installed in the lower vacuum chamber, and the double chamber reciprocating movable part is installed in the upper vacuum chamber, and the active part device mainly consists of the following Components, heat sealed air chamber frame fixed in the upper vacuum chamber, two heads with guide column, spring reset device, hot press frame seat with two guide bushes, set on the guide post, heat sealing air chamber frame and hot pressing There is a heat-sealed air chamber between the seats (also known as the vacuum chamber is an atmospheric chamber, and the heat-sealed air chamber is a small air chamber). The heat-sealing air chamber has a plastic water pipe, and the two ends are clamped by a clamp pipe, and also have a bicycle or a rickshaw. Inner tube rubber water glue processing, there is a gas nozzle in the middle, hot pressing frame seat is fixed with epoxy plate processing hot pressing frame body, two ends have reeling shaft, nickel-chromium alloy belt is wound by reeling shaft , outside the bread has a heat-sealed linoleum. The fixed part device mainly consists of a printed rubber strip frame and a printed rubber strip. The printed rubber strip is processed by a heat-resistant silicon rubber. A flat surface is provided with a diagonal or straight grain, and the other side is provided with a round hole or a square hole. Words or squares are embedded in them. At the same time, the seal is printed with a bumpy and transparent production date. If a colored print is required, a ribbon printer is additionally required.
4, vacuum pump, vacuum gauge and vacuum solenoid valve
There are two kinds of vacuum pump installation methods, one is built-in type, usually use XD-020, XD-040 type single-stage rotary vane vacuum pump, general 400 type packaging machine uses XD-020 pump, 500 type packaging machine uses XD-040 pump There are also some manufacturers using two XD-020 pumps instead of one XD-040 pump to reduce costs, but the XD-020 pump is 2880 rpm, high speed, fast wear, short service life, and the XD-040 pump is 1440 rev / min, low speed, large force, relatively extended service life. The other is an external type, usually 2X-15 two-stage rotary vane vacuum pump, the pump pumping rate is fast, the vacuum degree is higher than the single-stage pump, generally suitable for large production batch, high vacuum requirements, or requirements Install outdoors to reduce exhaust pollution.
Vacuum gauge is usually used in front of the axial, mounted on the front panel or the fuselage, commonly used ¢60 table, the accuracy of 2.5; ¢100 table, the accuracy of 1.5.
Vacuum solenoid valve usually uses two, one for the ¢5 two three-way solenoid valve, the main role is to control the thermal compression sealing device up and down displacement work. The other is the ¢15 two-position two-way solenoid valve, the main role of the vacuum, heat sealing is completed, open the path, so that the atmosphere back to the vacuum chamber, or the vacuum chamber can not be opened.
5, time relays, transformers and AC contactors.
The time relay usually uses two, one controls the vacuum time, often uses 30S or 60S; The other only controls the heat sealing time, often 5S or 6S. There are three types of commonly used models, one is an external JS14A-y type, the body is mounted on an electrical circuit board, the adjustment knob is mounted on the operation panel; the other is a turntable type, the body is mounted on the operation panel, and the body has a large Turntable; There is also a digital display, installed in the operating panel, vacuum with 0-99S, heat sealing with 0-9.9S.
The transformer is usually two, the smaller is the control transformer, input 380V, output 220V to provide control circuit power supply, output 6.3V to provide indicator power. Larger ones are heat-sealed transformers, generally 400W for a 400-type packaging machine, 600W for a 500-type packaging machine, and 380V for a small input (a small amount of 220V for a single-phase power packaging machine). The output is usually 20-36V divided into five grades, and the first grade is 20V. The heat seal current is the smallest, and the 36V heat seal current of the fifth gear is the largest.
There are usually two AC contactors, one for controlling the vacuum pump and the other for controlling the heat-sealing transformer. The working voltage is 220V and the operating current is 10A.
Because the operating voltage of the control circuit is 220V, the working voltages of the time relay, vacuum solenoid valve, AC contactor, counter, etc. are all 220V.
Vacuum packaging machines, including food vacuum packaging machines, are made up of vacuum systems, pumping and airtight sealing systems, thermocompression sealing systems, and electrical control systems. The external pumping vacuum packing machine is to seal the bag into a low vacuum and seal it automatically immediately. Because of the high degree of vacuum inside the bag, there is little residual air, which inhibits the proliferation of bacteria and other microorganisms, and avoids oxidation, mildew and spoilage of the articles. At the same time, for some soft goods, after being packed by an automatic vacuum packaging machine, the packaging volume can be reduced to facilitate transportation and storage. The principle of desktop vacuum packaging machine is plastic composite film or plastic aluminum foil composite film packaging materials, solid, liquid, powder, paste-like food, food, fruit, pickles, preserved fruit, chemicals, electronic components, precision instrumentation, Rare metals such as vacuum packaging or vacuum inflatable packaging.
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