DE202008018503U1 - Four-dimensional moving, multiple powder pistols / nozzle unit for automatic powder coating - Google Patents

Abstract

The four-dimensional movement system of powder nozzles / pistols is characterized by the fact that the vertical lifting movement can take place synchronously or asynchronously with a continuously changing rotary movement to both sides and / or up and down at an inclined angle.

Description

In automatic powder coating, the following types of powder guns / nozzles are used:

• - horizontal and vertical movement with one to multiple guns / nozzles. The arrangement of the guns can be horizontal and / or vertical or mixed.
• - The guns / nozzles can be attached individually or in series to lifting devices. These can be individually / jointly controlled / moved in horizontal or vertical direction, as well as guns in rigid positions.
• - Robots with one or more gun (s) / nozzle (s) coating parts in all directions according to the program.

The most common arrangement of guns / nozzles consists in the vertical arrangement of several guns / nozzles at a distance of about 300-400 mm.

The advantage is that during operation, the depth control and the number of necessary guns / nozzles (different height of the parts) without empty hangers, d. H. directly controlled automatically via the light curtain / program (maximum flow rate).

Rotary movement from left to right and / or from top to bottom is not possible due to the pistol design. Reason: The cabin should be very large and the cleaning would take too much time. In addition, each gun would have to be controlled individually, with relatively high costs.

Because of this limited ability to automatically rotate the guns in all directions, additional hand coaters must be used for difficult, delicate parts.

The new automatic additional turning of the guns / nozzles on both sides and from bottom to top, as well as in synchronous as well as in single operation of the opposing gun assemblies, corresponds to the movement of a painter.

With this new automatism nearly all parts can be coated automatically.

To make this technique optimal, the nozzle system is suitable in a plastic tube (already patent pending) or pistols in a common housing.

The motion system is mounted on both sides of the cab roof and synchronized with a splined or splined shaft for vertical movement over the conveyor to the other side. The splined or grooved wave, because the horizontal depth control can be different. In asynchronous operation, both sides are operated individually via linear systems.

The nozzle / gun housing is from left to right via a front step or Exzener engine or peum. Drive, depending on the number of degrees and speed turned. The rotation can be controlled synchronously with the opposite side. The same spraying distance to the coating part can take place via an additional eccentric movement or program control in horizontal movement.

The oblique upward and downward movement of the nozzles is with a joint, which is attached to each nozzle head in order, with a pneum. Cylinder operated. The nozzle head can be moved centrically or eccentrically or spherically over a half-shell or only with a hose. A cover can be inside or outside.

This max. Agility of several powder nozzles / guns can be used simultaneously via 4 movement options or individually or optionally several, depending on the product. All these variants can be controlled by programs, depending on the product.

An additional manual coating is largely eliminated. The coating quality is much higher. A uniform coating is possible.

The whole system can also be installed from below via the cabin floor / pit with automatic slot cover.

Depending on the type of application / possibility, the system can also be operated with side-mounted (as is currently the case) lifting devices with an additional toothed belt / rods.

1 shows the vertical and horizontal coating in synchronous operation with linear units on the cab roof (default setting). cabin 1 is on average with attached frame 2 on which are the two linear units 3 for the vertical and the two motors 5 for the horizontal stroke. The splined shaft 6 with engine 4 moves the linear units 3 in synchronous mode vertically up and down. The asymmetrical part to be coated 10 will be on the conveyor 7 transported horizontally. The horizontal linear units with the motors 5 and the linear units 3 with the nozzle system 8th fit the part 10 on (photoelectric or manual). position 9 shows 6 powder nozzles on the left and right.

2 shows in plan view the left nozzle system 8th with attached rotary drive 11 , The nozzle 9 is in 3 rotational positions to the part 10 shown.

3 shows a nozzle position 9 diagonally upwards, over the ball socket 12 with ball part 13 and flat jet nozzle 14 connected is. The ball part 13 is with the pneumatic cylinder 15 moved up and down. All other nozzle ball parts 12 be with articulated rods 16 connected and move together up and down.

Advantages:

• - The parts are coated almost as if they were turning.
• - The two-sided synchronous movement creates in the middle of the parts to be coated a homogeneous powder cloud with targeted reciprocal e-static, which produces a uniform powder coating layer.
• - A re-coating by hand or robot is only necessary for very deep parts.
• - The coating costs are reduced.
• - The surface quality is uniform and reproducible.
• - The acquisition costs are relatively small.
• - The cabin has no lateral slots where the powder can escape during operation and during cleaning.
• - The cabin can be cleaned quickly and without powder leakage.
• - The coating plant has no space-consuming lifting devices seitl. the cabins, which in addition can disturb the operability.
• - All movements can be used individually as needed.
• - The angular movement of the Pharadäische cage is largely reduced (good penetration of the powder into the inner edges).

Disadvantages are unknown.

Claims (8)

The four-dimensional movement system of powder nozzles / guns is characterized in that the vertical lifting movement can be synchronous or asynchronous with a continuously changing rotational movement to both sides and / or up and down at an oblique angle. According to claim 1, characterized in that one or more nozzles or guns can be used simultaneously in the strand. According to claim 1, that the alternating rotational movement are used synchronously or asynchronously, as well as with different angle and speed. According to claim 1, all nozzles / guns are installed in a common closed housing. According to claim 1, the lifting and rotating devices are mounted on the roof, on the side or in the ground. According to claim 1, that all rotational movements centric at 0 ° or 90 ° for the usual standard coating autom. stand still with a push of a button without movement. According to claim 1, that all rotational movements at each degree number have the same distance to the part. The simultaneous movement of the rotation and forward-backward movement can be controlled by a simultaneous eccentric or by a program. According to claim 1, that oblique nozzle positions remain fixed over any point in time.

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