TECHNICAL AREA

The invention relates to a single-acting adjustable pneumatic piston foruse in textileandreadymadegarmentmachinery.

KNOWN STATE OF THE ART

Today, pneumatic pistons are linearmotionelementsused in textileandreadymadegarmentmachines.

Pneumatic pistons used today are divided into two types as double acting and single acting.

In double-acting pneumatic pistons, the piston head moves forwards and backwards by means of compressed air. If the shaft is required to move forwards, compressed air is filled into the cavity behind the piston head. In this way, the piston head moves forwards and pushes the shaft mounted on it forwards. If the shaft is required to move backwards, compressed air is filled into the cavity in front of the piston head. In this way, the piston head moves backwards and pulls the shaft mounted on it backwards.

In single-acting pneumatic pistons, the movement of the piston head in the forward or backward direction is by means of compressed air. In the direction in which the piston head moves with compressed air, it moves with the thrust of a spring installed opposite to this direction. For example, a single-acting pneumatic piston is driven by compressed air in the backward direction. In the previous working cycle, the spring at the rear of the piston head, which moves backwards with compressed air, is compressed. When the compressed air at the front of the piston head is discharged, the spring compressed behind the piston pushes the piston head forwards. Inthiswaythisdrives the shaftmounted on the piston headmovesin a forwarddirection. When the compressed spring returns to its original position, the shaft takes its final position in the forward direction.

The force acting on the piston head of the spring, which is found in single- actingpneumaticpistonsused in textileandreadymadegarmentmachinestodayandwhichenables the pneumatic piston head to move in one direction, is constant. Nowadays, different pressing forces can be required depending on the work performed where the pneumatic piston shaft applies pressure. Since the single-acting pneumatic pistons used today have a single spring, it is not possible to obtain different compression forces from this spring. If the force per piston is tried to be variable by increasing the pressure of the air in the desired direction by using a double-acting pneumatic piston, the force in the desired direction cannot be fixed since the pressure of the compressed air comingfrom the airsupplylinecan changes. Even if a regulator is placed on the air coming in the desired direction, when the pressure in the system or compressor changes, the pressure set in the regulator also changes.

DEFINITION OF INVENTION

The invention overcomes the disadvantages described above.

Thanks to the adjusting screw in the single-acting adjustable pneumatic piston developed in the invention, the force on the piston head is adjusted by adjusting the compression or relaxation of the spring. By adjusting the force on the piston head, the invention enables variable forces to be taken from the piston head in variable operations.

The invention enables different forces for different operations, which cannot be obtained properly with the help of a regulator in double-acting cylinders, to be obtained properly by compressing and relaxing the spring of the adjusting screw. PARTS AND COMPONENTS

1 . Single-Acting Adjustable Pneumatic Piston

1.1 Nut

1.2 Shaft

1 .3 Pneumatic Fitting

1 .4 Front cover

1 .5 Piston Head

1.6 Spring

1.7 Body

1 .8 Adjusting Screw

BRIEF DESCRIPTION OF DRAWINGS

Figure 1. Perspective view of thesingle-acting adjustable pneumatic piston developed in the invention in assembled form.

Figure 2. A perspective view of the single-acting adjustable pneumatic piston developed in the invention in a disassembled state.

DESCRIPTION OF INVENTION

The invention relates to a single-acting adjustable pneumatic piston (1 ) foruse in textileandreadymadegarmentmachinery,

- positioned at the front of the piston head (1.5) or behind the spring (1 .6) positioned at the rear, by turning the spring (1.6) in one direction (e.g. clockwise), the spring (1.6) is compressed, thereby increasing the force acting on the piston head (1 .5) on which the spring (1 .6) acts, by turning the spring (1.6) in the other direction (anti-clockwise), the spring (1.6) is released, thereby reducing the force acting on the piston head (1 .5) on which the spring (1 .6) acts,

It includes the adjusting screw (1.8) which allows the force on the piston head (1 .5) to be adjusted.

Figure-2 shows an implementation of the invention. The single-acting adjustable pneumatic piston (1 ) shown in Figure 2 and developed in the invention is assembled as follows: The shaft (1.2) with nut (1.1 ) fitted on the front side is inserted into the piston head (1.5) through the centre hole of the front cover (1.4). There are sealing elements on the piston head (1.5) and the front cover (1.4). After positioning the spring (1 .6) at the rear of the piston head (1 .5), the body (1 .7) is mounted on the front cover (1 .4) so as to enclose the spring (1 .6) and the piston head (1.5). The adjusting screw (1.8) is then positioned at the rear of the body (1 .7) so that it is located behind the spring (1 .6). There are external threads on the adjustment screw (1 .8) and it is screwed to the internal threads in the hole where it is mounted on the body (1.7). When the adjusting screw (1.8) is turned in a direction according to the thread on it, e.g. clockwise, it moves forwards, presses the spring (1.6) and compresses the spring (1.6). When turned anti-clockwise in the other direction, the adjusting screw (1.8) moves backwards, releasing the force on the spring (1.6) and relaxed the spring (1.6). When the piston head (1.5) moves in the forward direction, the spring (1 .6) has a hole that allows air to fill the area where it is located from outside, and when the piston head (1 .5) moves in the backward direction, the spring (1.6) has a hole that allows the air in the area where it is located to be discharged to the outside.

The pneumatic fitting (1 .3) is positioned on the front cover (1 .4).

The pressurised air coming from the hose attached to the pneumatic fitting (1.3) positioned on the front cover (1.4) is filled into the front part of the piston head (1.5), moving the piston head (1.5) backwards and compressing the spring (1.6). When the compressed air filled in the front of the piston head (1 .5) is released, the compressed spring (1 .6) pushes the piston head forwards to the initialposition.

The adjusting screw (1 .8) can be of any suitable external thread size.

The part of the adjusting screw (1.8) which is turned by holding it can be of any suitable geometrical shape (circular, hexagonal, etc.).