â‘ Single acting cylinder: only one end of the cylinder has a piston rod. Air is supplied from one side of the piston to generate air pressure. The air pressure pushes the piston to produce thrust to extend and return by spring or self weight.
Compared with the electric actuator, the cylinder can work reliably under harsh conditions, and the operation is simple, and the basic maintenance free can be realized. Cylinder is good at reciprocating linear motion, especially suitable for industrial automation in the most transmission requirements - workpiece linear handling. Moreover, only adjusting the one-way throttle valve installed on both sides of the cylinder can simply achieve stable speed control, which has become the biggest feature and advantage of the cylinder drive system. Therefore, for users without multi-point positioning requirements, most of them prefer to use cylinder from the perspective of convenience. At present, most of the applications of electric actuators in the industrial field require high-precision multi-point positioning, which is the result that it is difficult to achieve with the air cylinder. Air Cylinder, Pneumatic Cylinder, double acting cylinder, single acting cylinder, rodless cylinder Glove Industry Co.,Ltd. , https://www.gloveind.com
CM SERIES VOLUMETRIC DOSER
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   CM series volumetric dosers are suitable for auto-proportional mixing of virgin materials, regrinds, master-batch or additives. Brusheless DC motors are adopted. According to the proportion and data set up, its micro-computer control system turns into referred speed, drive the precise SS304 dosing screw by the coupling, throw out the required material into injection machine. Its error value is below 1%. Give a total of six models with output ranging from 0.1~100kgs /hr. Double color dosers can be assembled from two single color dosers if required. Five components automatic mixing can be realized if customers adopt four color dosers.
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MODEL
SINGLE
DOUBLE
CM3025
CM3020
CM3016
CM5025
CM5016
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CM-D30/30
CM-D30/50
CM-D50/50
Motor(W)
50
50
50
50
50
30×2
30×2
30×2
Speed(rpm)
3000
3000
3000
3000
3000
3000
3000
3000
Mixing(W)
90
90
90
90
90
90
90
90
Screw
25
20
16
25
16
*
*
*
output(kg/h)
1.1-38
0.6-20
0.3-10
0.5-17
0.1- 4
**
**
**
hopper(L)
10
10
10
10
10
12×2
12×2
12×2
ratio
30
30
30
50
50
30 / 30
30 / 50
50 / 50
SIZE
H mm
520
520
520
520
520
Â
615
615
615
W mm
610
610
610
610
610
1045
1045
1045
D mm
335
335
335
335
335
335
335
335
Net weight kg
15
15
15
15
15
33
33
33
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Features:
* Dosing screws are chrome plated for durability.
* Unit is comprised of standard modules for ease of cleaning, disassembly and interchangeability.
* Blender is a standard equipment for double color doser to make the material evenly mixed, while also a optional equipment for single color doser to do so.
* Main material hopper is a standard equipment for double color doser. It is optional for single color doser.
* External signals can be directly interfaced with control box.
* The current operation mode can be recorded, unaffected by power failure so operation would be returned to normal when power is on.
* Forced material cleaning is convenient to replace masterbatch.
* Applicable on extrusion machines, just need to make a few wire replacements.
* Rotating speed can be automatically adjusted according to extruder processing speed, which maintains the fixed proportion of masterbatch.
* 50 units of parameter recipes are available for permanently recording the period of material discharging and finished products weight (for extruder, it is max. Throughput per minute).
* Use brushless DC motor and free from maintenance.
* Both master blockage and overload can be detected, then machine will halt and sound alarm.
* Based on customers demand, some mold cycles can be set to add additives periodically so that micro-metering can be achieved.Â
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â‘¡ Double acting cylinder: supply air alternately from both sides of piston, output force in one or two directions.
â‘¢ Rodless cylinder: general term for cylinders without piston rod. There are magnetic cylinder and cable cylinder.
The reciprocating cylinder is called swing cylinder. The inner cavity is divided into two parts by the blade, and the air is supplied to the two cavities alternately. The output shaft swings, and the swing angle is less than 280 °. In addition, there are rotary cylinder, gas-liquid damping cylinder and stepping cylinder.
The electric actuator is mainly used for rotating and swinging conditions. Its advantage lies in the fast response time and the precise control of speed, position and torque through the feedback system. But when it needs to complete the linear motion, it needs to be transformed by mechanical devices such as toothed belt or screw rod, so the structure is relatively complex, and there are high requirements for the working environment and the professional knowledge of the operation and maintenance personnel.
advantage
(1) The requirement for users is low. The principle and structure of the cylinder are simple, easy to install and maintain, and the requirements for users are not high. Electric cylinder is different, engineering personnel must have certain electrical knowledge, otherwise it is likely to be damaged due to misoperation.
(2) The output force is large. The output force of the cylinder is proportional to the square of the cylinder diameter; The output force of the electric cylinder is related to three factors: cylinder diameter, motor power and screw pitch. The larger the cylinder diameter and power, the smaller the screw pitch, the greater the output force. The theoretical output force of a cylinder with a diameter of 50 mm can reach 2000 n. for the electric cylinder with the same diameter, although the products of different companies are different, they are basically no more than 1000 n. Obviously, the cylinder has more advantages in terms of output force.
(3) Strong adaptability. The cylinder can work normally in high and low temperature environment, and has the ability of dustproof and waterproof, which can adapt to all kinds of harsh environment. Because of a large number of electrical components, the electric cylinder has high requirements for the environment and poor adaptability.