CZ297641B6 - Degreasing and phosphatizing apparatus - Google Patents

Abstract

The present invention relates to a degreasing and phosphatizing apparatus being mounted on a frame (6) and being provided with a chain sprocket drive (12). The apparatus has an endless chain conveyor line (1) located within a plastic guide wherein each link of the chain conveyor line (1) is provided with an extended pin. Exchangeable adapters (2), being provided in their lower portions with a rosette (17) and further with suspension elements (14) for gripping product being treated, are rotatably mounted on said pin extension. At the point where the chain conveyor line (1) passes between adjustable upper and lower baffle-plates (4, 5) and a wall (3) located opposite thereto, there is situated a swingable moving pressure distribution system (7) of service fluid. Said pressure distribution system (7) having its outlets provided with nozzles (8) is formed by at least one portion that is central and other portions being lateral. Said pressure distribution system (7) is connected with an air-operated drive. An auxiliary chain part (16) being fixedly attached to said plastic wall (3) and underneath thereto, serves for rotating the rosettes (17). The apparatus is further provided with a water rinsing system (9), through which said chain conveyor line (1) passes along with the exchangeable adapters (2). The water rinsing system (9) is provided with upper and side inlets (10) of water under pressure and with a collecting cistern (11) disposed therebelow.

Description

Technical field

The invention relates to an apparatus for degreasing and phosphating products in powder paint shops. The present invention is in the field of apparatus for chemical surface treatment of metallic materials or for cleaning and degreasing metallic objects by chemical methods.

BACKGROUND OF THE INVENTION

Similar solutions known from the prior art are known as fixed parts of degreasing and phosphating lines, i.e., those which are unconvertible in relation to the different sizes and types of products to be treated, and are not variable with respect to the feed rate and hence the degreasing time and intensity. Another disadvantage is that in case of insufficient degreasing the cycle of selected products cannot be repeated in case of necessity.

There is known a solution according to CZ published application PV 1992-2340, which describes a cleaning method in which the surface of articles is surface-blasted with liquid. The jet of blasting liquid is gradually fed to all locations of the product. The difference with the proposed solution lies in the fact that after separation the liquid is recycled and reused.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are overcome by the degreasing and phosphating device according to the invention, which is mounted on a frame and equipped with a sprocket drive.

The essence of the solution is that the device is formed by an endless chain conveyor track, which is placed in a plastic guide. Each chain link has an elongated pin, interchangeable extensions are rotatably mounted on the extension, which are provided with a rosette at the bottom. At the point where the conveyor track is guided between the adjustable upper and lower damper and the plastic wall opposite them, a swinging movable pressure distribution of the operating fluid is situated. The pressure distribution outlets are equipped with nozzles and the pressure distribution is connected to the pneumatic drive. The pressure distribution is formed by at least one part which is central and variable by other parts which are lateral.

Underneath the plastic wall there is a firmly attached auxiliary chain part by which the rosettes rotate.

The device is further provided with a water rinse through which the conveyor track with interchangeable extensions passes. The rinse has an upper and a lateral supply of pressurized water and underneath it is a catch tank. Replaceable attachments can be provided with suspension elements for attaching the products to be treated.

The device is usable for serial work of surface treated products in powder paint shops. The advantage of the solution is easy manipulation during machine setting and changing of individual product series by changing of extensions and changing of different sets of suspension elements. During continuous quality control and degreasing levels, the speed of the drive can be quickly reacted to the change in feed speed, thus affecting the speed of the process and thus the quality. In this way, it is possible to respond to the requirements for achieving a high quality treatment prior to powder coating.

Easy and quick change of suspension elements in relation to production requirements is an advantage of variability of the solution.

-1 CZ 297641 B6

The solution ensures that the technological cycle is repeated several times to achieve the required quality.

BRIEF DESCRIPTION OF THE DRAWINGS

An exemplary embodiment of the proposed solution is described with reference to the drawings, in which Fig. 1 is a schematic top view of the device indicating part of the interchangeable extensions; Fig. 2 is a front view of the device; parts of interchangeable extensions and suspension elements.

Fig. 4 shows three details of interchangeable inserts with different shaped hinge elements and one rosette.

DETAILED DESCRIPTION OF THE INVENTION

According to the invention, a degreasing and phosphating device has been constructed which, for ease of handling, is mounted on the frame 6 and is driven by a sprocket drive 12.

The device consists of an endless loop of a chain conveyor track 1, which can be wall-mounted for safety reasons in a plastic guide.

Each chain link of the conveyor track 1 has one pin extending in the dark and the pin extending upwardly. The extensions 2 are rotatably mounted on the extension, which are provided at the lower end with a rosette 17.

The device further comprises an adjustable upper damper 4 and an adjustable lower damper 5 and a reflective plastic wall 3 opposite thereto. Underneath the plastic wall 3 is an ancillary chain member 16 whose longitudinal axis coincides with the longitudinal axis of rosettes 17 on exchangeable extensions 2. .

A pendulum-movable pressure distribution system 7 of the operating fluid is located opposite the plastic wall 3. The pressure manifold 7 has one central and one lateral portion as shown in Fig. 1.

The outlets of the pressure manifold 7 are provided with replaceable nozzles 8 and the pressure manifold 2 is connected to a pneumatic drive.

The device is provided with a water rinse 9 through which the conveyor track 1 passes. The rinse 9 has an upper and a side pressure water inlet 10 and underneath there is a catch tank 11 as shown in FIG. 2. The exchangeable extensions 2 may be provided with suspension elements 14 to facilitate the gripping of the workpieces. Behind the plastic wall is air recovery 13 and vapor extraction. The device is equipped with collectors of operating liquid and rinse water.

The operation of the pressure distribution system 7 is time-controlled and the position of the pressure distribution system 7 is regulated by limit switches. Because of the humid environment, the pressure distribution system only operates by pneumatic control.

The function of the device is such that when the conveyor track 1 is moved and the rosette 17 is moved to the auxiliary chain part 16, the teeth of the rosette 17 engage in the link of the auxiliary chain part 16 and thereby rotate the interchangeable attachment 2 and the workpiece which is on the interchangeable attachment 2. suspended.

Claims (3)

PATENT CLAIMS A device for degreasing and phosphating, usable for series work of surface treated products in powder paint shops, the device is mounted on a frame (6) and is equipped with a chain wheel drive (12), characterized in that the device consists of an endless chain conveyor track (1), which is located in the plastic guide, each chain link of the conveyor track (1) has an elongated pin, interchangeable extensions (2) are rotatably mounted on the extension provided with a rosette (17), where the conveyor track is (1) guided between the adjustable upper and lower damper (4, 5) and the opposed plastic wall (3) there is a pendulum-movable pressure distribution system (7) of the operating fluid, the outlets of which are provided with nozzles (8) and pressure distribution system (7) is connected to the pneumatic drive, under the plastic wall (3) is fixed the auxiliary chain part (16) for rotation r and the device is provided with a water rinse (9) through which the conveyor track (1) with interchangeable extensions (2) passes, the rinse (9) having an upper and a side supply (10) of pressurized water and below which there is a catch the reservoir (11). The degreasing and phosphating device according to claim 1, characterized in that the pressure distribution (7) is formed by at least one part which is central and the other parts are lateral. Degreasing and phosphating device according to claims 1 and 2, characterized in that the replaceable extensions (2) are provided with suspension elements (14) for receiving the products to be treated.