Tobacco industry pinned product - Các trục kim trong nhà máy thuốc lá

Các trục kim trong nhà máy thuốc lá

Các trục kim trong nhà máy sản xuất thuốc lá

Stewart Pinned Products Ltd is the recognised standard Original Equipment Manufacturer for the majority of the World's leading Tobacco Machinery Makers. We designed the integral construction, aluminium alloy Pinned Drum for the Tobacco Industry, and it has become the accepted industry standard.
Công ty Stewart Pinned Products Ltd là nhà sản xuất phụ tùng chính hãng ủy quyền cho các hãng sản xuất các thiết bị sản xuất trong ngành thuốc lá. Chúng tôi chế tạo các sản phẩm kết cấu đồng nhất, các ống nhôm đúc gắn kim cho ngành công nghiệp thuốc lá. Các sản phẩm của chúng tôi đã được đánh giá và chấp nhận tốt theo tiêu chuẩn trong ngành công nghiệp thuốc lá.
Over the years, our range of products for the Tobacco Industry has been greatly extended, and now includes/ Sau nhiều năm sản xuất và chế tạo đa dạng các sản phẩm trong ngành thuốc lá, các sản phẩm chính của chúng tôi bao gồm như sau:

• Pinned drums and segments of many different sizes and designs/ Các trục kim và các thanh kim với các kích cỡ và thiết kế khác nhau
• Picker and Metering Rollers of advanced design/ Các trục gắp và trục đo với thiết kế tối ưu
• Perforation and other products/ Các ống đục lỗ và sản phẩm liên quan
• Pinned Carding drum segments/ Các thanh kim trong trống chải vật liệu
• Pinned Carding Drums and Segments/ Các trống chải gắn kim

Aluminium Alloy Pinned Drum - Development and Design/ Nghiên cứu và chế tạo các ống trục nhôm đúc gắn kim

Stewart Pinned Products Ltd first developed the integral construction, aluminium alloy Pinned Drum for the Tobacco Industry, 50 years ago, and we have developed it continuously since then to keep its position as the well-tested industry leader.
Công ty Stewart là công ty đầu tiên nghiên cứu và chế tạo các ống trục nhôm gắn kim cho ngành sản xuất thuốc lá. Trong quá trình sản xuất và phát triển 50 năm liên tục các sản phẩm của chúng tôi luôn ở vị trí dẫn đầu trong ngành công nghiệp thuốc lá
The light but strong construction uses the integral strength of an extruding aluminium alloy section, supported by an elegant construction of a shaft with flanges. The Stewart development of the N.I.F (non-interference fit) bonded pins guarantee pin point accuracy second to none.

Drums and Segments - 150mm to 2500mm

We now supply an extensive range of Drums and Segments for most machines, ranging in size from 150mm to over 2500mm wide, and all using the STEWART aluminium alloy extrusion design.

Original Equipment Manufacturers (OEMs) and Aftermarket users

We supply our Pinned Products to both the Original Equipment Manufacturers (OEMs) and Aftermarket users.

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LIFT-O-MAT Gas Spring

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Gas Spring Stabilus for Lifting, Lowering, Moving, and Adjusting
STABILUS gas pressure springs in the LIFT-O-MAT line are used whenever loads need to be lifted or lowered in a controlled manner. They provide force assist and thus ensure optimum weight equalization. With LIFT-O-MAT, opening and closing doors and lids becomes child’s play. Its damping properties ensure safe and user-friendly motion sequences.
Properties and Function
The LIFT-O-MAT gas spring is a hydropneumatic adjustment element consisting of a pressure tube, piston rod with piston, as well as a suitable end fitting. It is filled with nitrogen, which, under constant pressure, acts on piston cross sections of different sizes, creating a force in the extension direction. This force can be accurately specified through the individual fill pressure.
Among the advantages of this gas spring – compared with a mechanical spring – are its defined speed curve and excellent damping properties, which make handling even heavy lids and doors comfortable. Ease of mounting, compact dimensions, a flat spring characteristic curve, and a very broad selection of available strengths and end fittings round out the positive overall picture.
Advantages

• Broad selection of sizes, force variants, and end fittings
• Compact design, small space requirement
• Fast and easy assembly
• Flat spring characteristic curve; i.e., low force increase, even for high forces or large strokes
• Linear, progressive, or degressive spring characteristic curve
• Variable locking mechanism (product-specific)
• End position lock (extended and compressed)
• Additional functions, such as electric switches, stop function, etc. can be integrated

Solutions for any Requirements
Are you also looking for a convenient gas spring solution for your application? We can provide you with the right product. You can select one from our broad product lines, or let us develop a suitable solution for your individual application. We will gladly support you as a competent, experienced partner.
For decades, STABILUS has been supplying the global automotive industry and is a recognized development supplier. We offer a large selection of gas springs that meet the most exacting requirements and, consequently, have a proven track record in many other industrial applications.
Be it in the furniture industry, in machinery or vehicle manufacturing, or in many leisure time applications – STABILUS gas springs make everyday life easier and more comfortable everywhere.

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BLOC-O-LIFT Gas Spring

Variable Positioning, Rigid or Elastic Locking Gas Spring – Pneumatic

Flaps and lids can be very heavy and hard to operate by hand. Chairs and desks must be adapted to the body height of the individual user to take ergonomic aspects into consideration. In these cases, gas springs from STABILUS will provide optimum weight equalization and user-friendly motion sequences during opening, closing, and positioning. Our products in the BLOC-O-LIFT line are also available with variable locking, either rigid or elastic in the direction of tension or compression, depending on the desired setup.
Function
A special piston / valve system, which separates the two pressure chambers in the spring, allows effortless variable locking. If the valve tappet is released from the outside and the exchange between the pressure chambers is interrupted, the gas spring will lock and hold even heavy loads reliably in the desired position. With the valve open, the linear spring characteristic curve of the BLOC-O-LIFT will provide an even increase in force over the entire range of motion.
Solutions for Every Requirement
Our standard product line offers a broad selection of locking gas springs and, thus, always the right product for any installation situation.
With our long-term expertise as pioneers in the production of gas springs, we will also be happy to support you as a development partner. Together, we will develop the right solution for your individual requirements.
Your Advantages

• Variable positioning with elastic or rigid locking
• Optimized weight compensation during lifting, lowering, opening, and closing
• Lock into position in the extended or compressed position
• Installation can be orientation-specific or in any orientation, depending on type
• Flat spring characteristic curve for low force increase, even with high forces or large strokes.
• Linear, progressive, or degressive spring characteristic curve
• Mechanical actuation systems, also with an extra small actuation range for easiest operation
• Broad selection of sizes, force variants, and end fittings
• Compact design for installation in the smallest of spaces
• Maintenance-free, even at high loads, with long service life
• High-quality products manufactured in compliance with DIN EN ISO 9001 and the international standard ISO/TS 16949.

Product Variants

• BLOC-O-LIFT – locking standard gas spring, elastic locking
• BLOC-O-LIFT – gas spring with rigid locking in the direction of tension or compression
• BLOC-O-LIFT – gas spring with override function, to protect against overload
• BLOC-O-LIFT OBT – locking gas springs for safe and comfortable lifting of table tops without actuation
• BLOC-O-LIFT T – locking gas spring for height adjustment with even force distribution over the entire stroke.
• KOMBI-LIFT – combined functionality of locking and non-locking ranges for special applications
• BLOC-O-LIFT actuation systems
• STAB-O-MAT / STAB-O-BLOC – special locking gas springs for swivel chair height adjustment

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What is Gas Spring? How it works?

As the name implies, the product is Nitrogen gas filled and performs like a compression spring. The spring consists of a piston rod attached to a piston and valve assembly moving within a sealed cylinder containing nitrogen gas at a certain predetermined pressure. The output force is the result of the differential force along the piston due to area difference. Compression type gas spring act like a standard metallic coil spring with lots of added advantages, like smooth opening and closing operation, almost flat curve characteristic, easy mounting and less maintains, flexibility in design, long life, high starting force, less force transferred on mounting hinges and compact design, to name a few of them.

The small quantity of oil incorporated in the cylinder provides extra cushioning at the end of the stroke thereby reducing the end jerk and load on the hinges.

These gas springs are available in two major types, non lockable and lockable. Non lockable gas springs ( Gasolift ) are in extended condition when not loaded. These are mainly used in easy lifting and lowering of equipment. Intermediate positive locking along the stroke is not possible. Lockable gas springs ( Gasoblock and Gasohite ) can be positively locked in any position along the length of the stroke. A valve mechanism is incorporated which effects in locking condition at any position along the stroke of the gas spring. Gasoblock gas springs are having a valve in the piston rod and can be operated by a valve actuating mechanism through the piston rod. In this type of gas spring there are three different types, mainly spring blocking, rigid blocking in extension and rigid blocking in compression. These are mainly used in passenger seats, hospital furniture and office chairs. Gasohite gas springs are having a valve in the tube assembly and can be operated from the top of the cylinder. These are mainly used for variety of chairs for height adjustment and revolving.

Operating Temperature Range

The gas springs are designed and manufactured to withstand continuous temperature of -20 degree centigrade to +80 degree centigrade. An exposure to 100 degree for a period of half an hour continuous is permissible. BALAJI can supply gas springs for lower and higher temperatures than specified on special request. The range is from -40 to + 120 degree centigrade.

Installation Instructions The gas springs should be mounted with piston rod in down condition so as to ensure seal is dipped in oil during maximum of its working life. For rigid lockable gas springs, they can be mounted in any position. Avoid paint, welding spatters, thinner, dust etc. on the piston rod. Preferably gas spring should be mounted lastly during assembly. Avoid or minimize side loading on the piston rod. Ensure that the mounting pins in the eyelet type end mounting are free enough and well lubricated to avoid side loading on rod during operation. Ensure that the ball pins for the ball joint type mounting are properly tightened in the bracket to avoid loose pin and play. Do not heat or open the gas springs. For Gasohite gas springs, ensure proper taper fitment of mating top and bottom parts of the chair to avoid play and side loading. For Gasoblock and Gasohite gas springs, ensure that the valve actuator is not pre loaded and a gap of minimum 1 mm exists between valve actuator and the actuating lever. Dispose the gas springs as per the manufacturer's instructions only.   Material Safety Balaji cares for the Environment. Gas spring should be disposed off as per the following procedure. Leak the high pressure gas by drilling a hole at 2mm diameter in tube. Ensure to leak the gas from both the component of springs. Ensure that the piston rod is freely moving in the tube. Open the gas spring by machining between the ends on turning centre. Remove all the parts and clean thoroughly The metallic (Steel) part can be scrapped by damaging the same to avoid misuse. The plastic parts can be delivered for recycling. The rubber parts and oil should be destroyed as per the local municipal regulations.   Advantages of Gas Springs Smooth opening and closing operation : The unique design of piston and valve assembly and nitrogen gas, provides damped extension or smooth and effortless opening and no damping or easy closing of any cover or lid. The small quantity of oil incorporated in the cylinder ensures proper lubrication to seal and in addition the damping effect at the end of the stroke. This cushioning at the end of the stroke provides jerk less opening. Almost flat curve characteristic : Unlike coil spring, the gas spring exhibits the high force right from the beginning of the stroke. It means there is no necessity to compress the spring to get required force, like a coil spring. The force versus stroke curve is almost flat. Please refer following graph. This unique feature of gas spring made the application engineer's job very easy. Easy mounting and No maintenance Less force on mounting hinges Flexibility in Design : In a particular combination of tube and piston rod diameter, one can get different forces by changing the gas pressure. Please see the specification chart. The spring characteristic (F2/F1) can also be changed to suit the application by varying oil quantity. For certain applications one need comparatively high force at the beginning of the opening and less force at the end of the stroke. The same can be achieved by various methods in gas springs. Compact Design Aesthetically good looking Long Life : Depending on the application and operating conditions, gas springs can exhibit a life of three to seven years. Available in different colors to suit the application.

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What is a Locking Gas Spring?

 What is a Locking Gas Spring?

The main difference between a lockable gas spring and a standard gas spring / gas strut, is that a lockable gas springs position can be controlled over the complete stroke by the push of a button or lifting a lever.

The elastic locking gas spring is the most basic type. The valve is locked in nitrogen gas, which is compressible. Therefore depending on the amount of force applied the piston rod can be displaced.

In a rigid locking gas spring, the valve is locked in oil, which cannot be compressed and a displacement does not occur. The extension force is provided by a separated chamber filled with nitrogen gas.

So where can a lockable gas spring be used?

Typical applications include:

• Height adjustable tables and chairs
• Vehicle seating
• Medical bed back rest adjustment
• Aircraft storage compartments
• Chart/Drawing board workstations 

Locking Gas Spring Options

Force Range	0-2600 N
Stroke	10-800 mm
Piston Rod/Body Diameter	8/22 – 14/40 mm
Model	Type 1. Elastic locking (comfortable shock absorption). Type 2. Rigid locking in pull direction, push-in direction relatively rigid. Type 3. Rigid locking in push-in direction, relatively rigid in pull direction. Type 4. Rigid locking in push and pull directions.
Release Systems	Lever. Bowden wire with push button. Hydraulic tube with push button.

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Gas spring - ben hơi - ty chống cửa

Gas spring - ty chống cửa 

GAS SPRING - Ty chống cửa

A gas spring is a type of spring that, unlike a typical metal spring, uses a compressed gas , contained in a cylinder and compressed by a piston, to exert a force. Ben hơi là 1 dạng lò xo khác với loại lò xo kim loại thông thường, ben hơi sử dụng khí gas ép chứa trong 1 xi lanh và được ép bởi 1 piston
Common applications include automobiles (where they are incorporated into the design of struts that support the weight of hatchback doors while they are open) and office chairs.Ben hơi (ty chống cửa) được áp dụng cho ngành xe hơi (được thiết kế phù hợp với thiết kế của xe để chịu được 1 lực ép nhất định của các cánh cửa khi chúng được mở ra) và các ghế trong văn phòng 
They are also used in furniture, medical and aerospace applications. Much larger gas springs are found in machines that are used in industrial manufacturing (the press tooling industry), where the forces they are required to exert often range from 2500N to 400,000N (Forty tonnes).Ben hơi (ty chống cửa) còn được sử dụng trong các vật dụng nội thất, dược phẩm và ứng dụng hàng không. Ben hơi được sử dụng nhiều trong các máy móc trong ngành sản xuất công nghiệp (như trong công nghiệp ép) mà lực ép của chúng yêu cầu cao từ 2500N đến 400.000N (40 tấn)

To properly use gas springs in even the simplest application, users should understand how they work and how a gas spring can be modified to meet specific operating requirements.Để sử dụng gas spring đúng cho dù với ứng dụng đơn giản nhất thì người sử dụng cũng cần phải hiểu nguyên lý hoạt động và làm sao mà có thể sản xuất ra được các loại ben hơi khác nhau thay đổi phù hợp với yêu cầu hoạt động và  sử dụng.

Gas Springs are manufactured in many Varities viz:/ Ben hơi được sản xuất có nhiều loại khác nhau

• Standard Cylinder xy lanh tiêu chuẩn
• Fixed-Height Cylinder xy lanh có chiều cao cố định
• Spindle only chỉ có trục xoay
• Cable Cylinder xy lanh dạng cáp
• Stage Cylinder xy lanh chu trình
• Non Rotating Cylinder xy lanh không xoay
• Return Cylinder (No Height Adjustment) xy lanh quay về (không điều chình độ cao)
• Auto Return Cylinder with height Adjustment xy lanh tự động quay về với chiều cao điều chỉnh
• Bouncing Cylinder
• Dual Mode Cylinder
• Heavy Duty Cylinder

·         Common applications

·         If the internal plunger has a diaphragm which extends to the side of the gas tube, it will cease to move once an applied force is constant and will support a weight, like a normal spring. If a fine hole exists in the plunger, however, it is termed a "slow-dampened spring" and can be used on heavy doors and windows. A gas spring designed for fast operation is termed a "quick gas spring" and is used in the manufacture of air guns and recoil buffers. Reducing the gas volume and hence increasing its internal pressure by means of a movable end stop, or allowing one tube to slide over another, can allow the characteristics of a gas spring to be adjusted during operation. The rod may be hollow by use of clever seals or may consist of multiple small-diameter rods. A small amount of oil is normally present. The gas may be introduced by a Schrader-type valve, using a lip seal around the rod and forcing it to allow gas in by external overpressure or a shuttling O-ring system. Gas springs of high pressure contain a very large amount of energy and can be used as a power pack. In emergency use the gas may be introduced via a gas generator cell, similar to those used in airbags. Gas springs are used to operate the main valve on Formula 1 racing cars. Passive heave compensators features large gas springs. The stroke lengths can exceed 6 meter

Features

A variety of features are available from various manufacturers:

• Adjustable push-in force via a local knob or remote via abowden wire.
• Single touch release to allow full extension or the ability to lock it out.
• Extended stroke through telescoping mechanisms, usually composed of one rod and two cylinders (the smaller of the two cylinders actually acts as a second rod extending in and out of the larger cylinder).
• Vari-lift - intended for short production runs and prototypes, in applications where the exact force is important but hard to estimate in advance, such as lifting a lid slowly in a known time. In this case the cylinder is supplied filled to maximum design pressure, but equipped with a bleed port, to allow gas to be released once installed. The intention is that de the design can be over-sprung, and then the pressure reduced in stages, to optimise behaviour. If too much gas is released, a new spring must be installed, and for large quantities, it is better to order a bespoke pressure setting from the maker.

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