TR201802350T4 - Apparatus for applying paint to products. - Google Patents

Abstract

The present invention relates to the technical field of devices known in the market as paint spray booths, in particular for the application of paint to products such as products having a substantially flat area.

Description

DESCRIPTION APPLICATIONS FOR APPLICATION OF PAINT TO PRODUCTS BACKGROUND OF THE INVENTION The present invention is particularly basic, known commercially as paint spray booths. for applying paint to products such as products that have a flat area It is related to the technical field of the devices used. The present invention is based on the following description, with a slider to make explicit reference without narrowing the scope of the description. PRIOR ART Moving automatic devices (reciprocating) for spray painting products to be painted movers, carousels, swing arms) spray booths known, and they can also produce products in the spray booth in an advancing direction. It includes a transport system to advance. Automatic spray devices, end Applies the dye as the products progress while the dye is within a dyeing zone.

Spray paint application causes all paint not to hit the product; to the product Unapplied paint partially ends on the product transport system and suspended in the air inside the spray booth itself. This is spray paint the last part is oversprayed and partly by the spray booth suction system. is interrupted.

Continuous overspray contaminates the inside walls of the spray booth, resulting in production collects them on it to the point of compromising the quality of the painted products. causes significant waste. Therefore, the spray booth its costly maintenance and cleaning becomes mandatory.

Overspray interrupted by the suction system are directed towards the filters at the same time, thus the suction system itself It is directed towards a current also produced by it. In this way, overspray, air a more convenient solution, thanks to the emission of an air flux from the collection box. is checked in sequence.

Recently, the applicant has applied for patent no. EP2808091. As shown in Figures 10 and 11, here is a transport system, a product (14) a longitudinal axis of symmetry (Y) arranged perpendicular to the direction of progress (D). an inclined air pick-up, especially in a semi-circular shape, with advance (D) a spray booth (12) obtained by transporting a product (14) in the direction of the can (15) is explained. The suction means (16) are on both sides of the conveyor system (13). are available. Spray booth in corresponding manuals (not shown) on the corresponding swing arms, which are slidably arranged two spray assemblies (17) located (not shown).

Second, the air collection box 15 has a longitudinal axis of symmetry (Y). parallel and fixed to the lateral walls of the spray booth, respectively. Spraying assemblies (17), so that paint can be sprayed from opposite sides of the cabinet. facing each other, preferably at the same height, and corresponding longitudinally by the corresponding arm along the corresponding guide to the part of the product to be painted to be rotated in the guides along the axes driven by a control system of the corresponding spray booth and the air parallel to a longitudinal axis of symmetry (Y) of the collecting box (15).

Air collection box (15) in combination with the suction means (16) of the cabinet (12), an air vortex that prevents the overspray phenomenon it contains. creates.

However, the lateral walls of the spray booth of the spray assemblies turbulence in the unapplied paint air vortex and this paint can build up on parts of the walls inside the spray booth. found to cause accumulation.

To further improve the control of overspray and, as a result, the paint Continue research to limit contamination of the spray booth during operation. has done.

DESCRIPTION OF THE INVENTION The present invention provides a spray booth with improved cleaning properties. aims to do.

A further object of the present invention is the laborious spray booth. provide a spray booth that rarely needs cleaning/maintenance is to do.

This aim has been achieved with a device with the features of the independent request. Advantageous applications and improvements are specified in the appended claims.

The aim is to have a container that is at least partially complementary to that of the air collection box. according to the shaped arm, the spraying assemblies according to the present invention have a support It is carried out by the combination of the arm and an air collection box.

Sliding as similar to the shape of the air collection box as possible the shape of the lever, the slide lever, the air collection without deteriorating the air vortex itself It follows the shape of the vortex created by the combination between the box and the suction. It means.

Advantageously, the slider is moved as far as possible into the air collection box. sticks, it is absolutely safe from being interfered with as much as possible, especially with the air vortex. 5 mm to 150 mm from the air collection box to avoid is at a different distance.

More advantageously, the slide lever belongs to the symmetry of the air collection box. It has a shape that is symmetrical with respect to a longitudinal axis and does not collect air. support, which is fixed respectively to the axis of the symmetry of the box It is fixed to the elements by a central part.

In other words, still more advantageously, the slider lever, air collection supported by an upper central region of the can and from the top so that it is struck by the airflow emitted by the collection box. the shape of the air collection box for spraying the paint on the bottom products and the air collection box and the suction The air created by the combination between is carried in the vortex.

Yet another advantage is that the air collection box has a curved shape, especially half circular shape and the slider arm thus has a curved shape, especially air substantially complementary, at least partially, to the shape of the collection box. semi-circular and as far as possible into the air collection box of the sliding arm. It is obtained if it is positioned so that it is close. This particular application is spraying Allows effective control of overspray inside the cabin because air The central upper part of the collection box absorbs the vortex created by the suction system. low and the lateral walls of the air collection box do not interfere with the air vortex. compressed air in the center of the spray booth with slide lever protects its vortex.

The advantages of the present invention derive from its improvement in the control of overspray flow. because of. This has several consequences: - converts to less wasted paint for the end user a cleaner painting process; - less need for cleaning and maintenance of the spray booth; - air expelled by the intake system to control overspray lower consumption (fewer air renewals per unit of time); - a higher part of the paint is finished on the part to be painted; - a smaller amount that is more effectively blocked by the intake system BRIEF DESCRIPTION OF THE DRAWINGS The present invention is illustrated herein as a non-limiting example with the aid of the accompanying figures. via, in one of its applications will be described below: - Figure 1 shows the spray apparatus perpendicular to a conveyor system of products and on a plane parallel to the direction of travel, some reserved for understanding with sections, it is a sematic view from the front; - Figure 2 shows the air collection box of the spray apparatus and the most A perspective bottom view of a slide lever to which at least one assembly is fixed is the view; - Figure 3 is also a perspective view of the air collection box in Figure 2; - Figure 4 is another perspective and schematic view of the air collection box in Figure 2. here is the view of some parts, the scroll levers and the slider lever. to show the means of movement of the slider arm containing its supporting elements, which adjusts the carriage of the slider and the slider in motion. separated for clarity to show an arch; - The air collection box of Figure 5, Figure 2 is vertical to the transport system of its products. a longitudinal axis of the air collection box it is a sematic view relative to the plane; - Figure 6 to show the scroll lever and its movement tools It is a detailed view of Figure 5; - Figure 7, Figure 2 air collection box vertical to the transport system of the products air collection to show the front slide lever A sematic section with respect to the plane perpendicular to a longitudinal axis of the box is the view; - Figure 8, adjustment guides for adjusting the position of the paint applicator is a detailed perspective view of one end of the slide arm provided with; - Figure 9 is a schematic view of a control system of the spray assembly; - Figure 10 is a prior art display of an air vortex of unapplied paint. is an axonometric view of the spray assembly; - Figure 11 shows the spray arrangement perpendicular to the conveying system of the products and a section according to the prior art, along a plane parallel to the direction of travel is the view.

PREFERRED EMBODIMENTS OF THE INVENTION In this explanation, similar elements common to the various examples shown are the same. According to what is shown in figures 1 to 9, together with (1), commonly spray booth Shown is an arrangement for dyeing products (not shown), also known as The products may also, for example, be of a substantially flat size.

The assembly (1) has a slide lever (5), at least one suction system (not shown), and obtained with a longitudinal axis (A) perpendicular to the direction of advancement (D) of the products. a flat transport system (2) fixed to an air collection box (3) (see Figure 1). shown) and at least one paint application tool (4). Specifically, in Figure 2 the longitudinal axis (A) shown is symmetrical for the air collection box (3) itself is a longitudinal axis.

The air collection box (3) is suitable for blowing air, while the suction system is not applied. It is suitable for the suction of paint such that it can be mixed with the suction system and the air sucked in. in combination with the air collection box (3), the dispersed air is evenly It can form a dispersed and controlled air vortex (7) (Fig. 1) such that paint particles suspended in the painting area, the walls of the painting booth It does not accumulate on it because it is effectively absorbed by the suction system.

The apparatus (4) for applying the paint includes at least one spray gun (20).

In the embodiment shown in Figures 1 to 9, each paint application assembly includes spray guns (20), eg four spray guns as in Figures 2 to 4. gun or two spray guns (20) as in Figures 5 to 8. Spraying number of guns, according to the type of painting to be performed and to be painted are selected according to the type of product and therefore two spray-guns are available in the forms available. Shown is the paint-applier (20) or four spray gun (20).

The spray guns (20) face a paint zone of the assembly (1).

The slide lever (5) is at least partially connected to the one of the air collection box (3). It has a form that is complementary.

The air collection box (3) is typically concave and the added shapes are oblique shows a shaped air collection box (3).

However, alternative applications not shown are for the air collection box. can be provided because, for example, the air collection box (3) is a continuous multi-plane surface. It can be done by means of a continuous surface with at least one inclined part.

The slide lever (5), as will be seen in detail below, their profile is completely completely in the shape of the air collection box (3) so that it can follow may have a form that is complementary or follow their profile It may have a shape approximating the shape of the box (3).

The slide lever (5) is hollow and paint over the products to be sprayed. Carrying the paint (8) taken by the paint application device (4) for spraying both pipes and pipes carrying compressed air (9) work.

In addition, the slide lever allows easy cleaning of the slide lever. for example, it is coated with a surface coating such as TEFLON®.

The spray assembly (1) is also detailed at least in figures 2 to 7. includes a belt shown, the width and position of the belt (6) being to the closure of a compartment (21) in which the supporting elements of the arm (5) are dragged. adjusts the slide lever (5) in motion to allow particles may not enter the transition portions (not shown) of the slide arm.

The belt (6) is symmetrical for the air collection box (3), as will be seen better below. It is arranged in the central longitudinal axis of the air collection box (3).

The supporting elements support a central part (Sa) of the slide arm (5).

The supporting members are a tubular longitudinal support (22) and a support (23) includes. The central part (5a) of the slide arm (5) is fixed to the carrier (23) and is a slider with a tubular support 22 supported by a pair of slide shoes. It is properly supported and on the belt that adjusts the slide lever (5) in motion. (6) is fixed. Belt (6), driving means for driving the slide lever (5) belt, tubular support (22) drags the carrier (23) that slides on it, especially the slip-on shoes of the carrier, the pipe shaped support 22 slides on a slide rail 24 (Figs. 4, Figs. 5 and Figs. 6).

Its belt (6), tubular support (22), carrier (23) and transition members (not shown) moving means of the slide lever (5), the slide lever (5) from one longitudinal end to the opposite longitudinal end of the air collection box (3) it is in a way that allows it to move.

In detail, the tubular support (22) covers all of the air collection box (3). extends along its longitudinal extension, and the slide rail (24), the tubular support (22) it extends over its entire length such that the carrier (23) is a part of the air collection box (3). from the longitudinal end to the opposite longitudinal end of the air collection box (3) it can slide with the belt (6) along its entire longitudinal extension.

The tubular support (22) is the longitudinal symmetry of the air collection box (3). placed on the axis.

An elongated slot (25), supporting elements and transition of the slide arm (5) It is obtained in the air collection box (3) for placing the elements.

A pair of elongated elements (26) is also part of the central part (5a) of the slider arm (5). compartment placed on its sides and closed by the belt (6) between the sides (21) is defined so that the paint particles are elements and the slide lever (5) are located in the transition members. prevents it from entering the slot (25).

Preferably, the assembly 1 includes two paint application devices 4 and the slide lever 5, it includes two lateral portions (5b) placed on opposite sides to its central portion (5a).

Each side (5b) is at least complementary to the shape of the air collection box (3). and also supports the associated paint application assembly (4).

Each side (5b) is also the position of the associated paint applicator (4). It has a tip obtained with adjustment guides for adjustment, both vertically and vertically. (Do not move the paint application device (4) away from the products to be painted or towards applied) and horizontally (i.e., that the paint application device (4) is away or towards the right) is adjustable. is the position of the paint application device (4). In fact, the paint application device (4) includes a plate (10) supporting the spray guns (20) and slides fixed to the vertical guide (11) where the position of the spray guns (20) can be adjusted on the spray guns (20), which allow the guns (20) to slide away from or towards each other. It is slidably mounted on horizontal guides (not shown) for

The orientation of each spray gun (20) with respect to the painting zone is also adjustable because each spray gun (20) rotation can be adjusted according to the axis.

In addition to the central portion (5a), each lateral portion (5b) also contains tubes carrying the paint (8) and hollow for internal placement of tubes carrying compressed air (9).

In addition, each lateral portion (5b) is to be applied to the spray bases (20). for paint placed in the vertical guide (11) to drain the paint the filter (27). The filter 27 is upstream of the spray guns 20.

The filter (27) can be detachably arranged at the lower end of the vertical guide (11) for maintenance. It allows the operator to open and remove the filter (27) easily.

The lateral portions (5a) of the slide lever (5) are interconnected, for example, A slider allows the desired rigidity to be achieved while keeping costs limited. in the form of a hollow tube that is connected and/or welded, which makes it possible to It is made of a number of elements (28).

At this point, the lateral portions of the tubular elements 28 are rectilinear. It is possible to limit costs, but only in this case, air if the collection box has a curved shape, the shape of the slider box (3) in a way that is at least partially complementary to one of these following its profile by any means, only the inclined shape of the air collection box (3) may approach.

Slide lever (5) to the longitudinal symmetry (A) axis of the air collection box (3) has an axis of symmetry that is parallel because the lateral portions of the slide lever (5) (5b) is symmetrical to the central part (5a) of the slide arm (5).

From the experimental tests, the downstream of the overspray, preferably the slide lever (5), sliding in the longitudinal symmetry (A) axis of the air collection box (3) when fixed, the slide arm following the profile of the air collection box (3) (5) has been developed with the profile and has no axis of symmetry (A) or longitudinal symmetry (A) is symmetrical to it with respect to an axis parallel to the axis.

Advantageously, the slide lever (5) is possible, as shown in figures 1 to 8 adheres to the air collection box as much as possible and thus 5 It has a distance ranging from mm to 150 mm. In particular, air collection as far as possible, at a distance ranging from 5 mm to 150 mm from the are the lateral portions (5b) of the slide lever (5) that attach to the air collection box. In addition, the air collection box is concave, especially inclined, more especially semi-circular.

As mentioned earlier, the slider arm attached to the air collection box (3) The position (5) is the semi-circular inclined shape of the air collection box (3) and the semi-circular between the shape of the slide lever (5) following the profile of the air collection box. combination, which increases the downflow of overspray from the spray booth (1), means the spray booth has maximum spray efficiency.

Spray devices (1) for determining the dimensions of the product to be painted based on the size detected by the fixing means (29) and the fixing means (29). a dyeing control suitable for adjusting the stroke of the slide lever (5) a control system comprising the device (30). The impact of the slide lever (5) control device (30) in both directions of movement of the slide lever (5) the first three positions of the tubular support (22) and a calculates the second three positions. In addition, the control device (30) also shaped support (22) by reducing the time required, especially for painting. the slider arm (5) on the slide rail (24) to optimize the painting of products. also suitable for setting a scroll speed.

In Figure 9, the stroke of the slide lever (5) is indicated by (31) while the stroke of the slide lever (5) The speed of movement is indicated by (32).

In use, the conveying system (2) is the one painted inside the spray assembly. advances the product and when the product is in a dyeing zone, the control device (30) Determines a painting plan for the product based on the dimensions determined by the tools (29) and thus tubular for defining the stroke (31) of the slide lever (5) the first end movement position and the second end movement position on the support (22) and determines the rate (32) at which the movement is executed.

The movement of the slide lever (5) and thus the activation of the dyeing, the transport must be synchronized with a forward speed of the system (2) because the slide lever (5) It is suitable for spray painting during the progress of the product.

According to the impact (31) detected by the control system (30), the slider arm (5) to move the belt (6), the driver's tools are activated and the belt (6) fixed to the carrier (23), fixed to the central part (5a) of the arm (5), respectively, the tube It drags the arm (5) by sliding the arm on the support.

A preferred embodiment of the invention of Figure 1 is now shown.

Figure 1 shows the progress of the product to be painted inside the spray booth (1). It shows the part on a plan parallel to the direction.

Inside the spray booth (1), there is a container for transporting products (not shown). the conveying system (2), at least one application device (4) (for example, a spray gun) and with an axis perpendicular to the direction of the advance of the products (indicated by the dark arrow) an air collection box (3) of a semi-circular spray booth are available.

Two suction tanks, one on each side, sideways to the conveying system (2) (not shown) is present and absorbs overspray.

Air collection box (3), evenly distributed and controlled air flow It is a ceiling that distributes an air flow that can produce In-flow and suction flow combination of the products to be painted, together with the shape of the air collection box. a formed air vortex (7) having its own axis perpendicular to the direction of travel (shown as spiral arrow).

Slide lever (5) supporting at least one dyeing device (4) with air vortex (7) air collection box (3) for as little intervention as possible. It has a curved shape that complements the one.

The arm (5) supporting the paint application device (4) is perpendicular to the direction of advancement of the products. forward inside the spray booth (1) in the direction and parallel to the axis of the vortex (7). and it goes back.

The complementary shape of the handle (5) and the air collection box (3) and the handle (5) and the air the distance between the collection box (3), the arm dirty from overspray by reducing the flow of air from the air collection box to keep the arm itself clean. Allows air flow.

The arm (5) is preferably used to prevent possible pollutant particles from falling on the products. for the purpose of making possible vibrations of the machine and especially of the paint application devices (4). It has the sturdiness to reduce as much.

The shape and dimensions of the arm (5) are to provide the desired rigidity.

In a preferred embodiment, the arm (5) is manufactured from laser 3D cut tubes and then welded together. Lever (5) steel, aluminium, carbon or high strength composite materials that allow weight reduction while maintaining can be done.

Preferably the sleeve (5) is solvent-free, which allows easy cleaning (eg Teflon). protected by a durable surface.

In a preferred embodiment, the lever (5) is necessary for the functionality of the dyeing devices (4). It is hollow, allowing the tubes carrying paint and compressed air to pass through.

In Figure 1, the tubes carrying the paint to the devices (8) and the tubes carrying the compressed air (9) they appear. Paint and compressed air tubes located in the arm (5), spray a more orderly placement in the cabinet (1) and the excess excess It allows a low number of surfaces that may come into contact with the spray.

A belt (6) adjusts the lever (5) in motion. The width and position of the belt (6), allowing the closure of the split where the supporting elements of the arm (5) extend so that the paint particles pass through the spray booth. parts of the body and possible contaminated particles may be deposited on products and spraying. may not fall back into the cabinets.

This system, which seals the spray booth with the belt, also It prevents the formation of air flows that can jeopardize the correct formation of the vortex (7).

The stroke of the lever (5) can be adjusted: two points that can be described according to the product to be painted it is possible to set your own scrolling between; In the preferred embodiment, this adjustment is automatic, thanks to the presence of sensors that detect the dimensions of the product.

The speed of the lever (5) is adjustable; this adjustment depends on the forward speed of the transport system (2). based on and other factors, such as the type of paint or the gun used, based on it.

The position of the guns fixed to a plate (10) is the position of the guns to be painted. vertical that allows products to be moved away from or towards It can be adjusted in length thanks to the presence of the adjustment guide (11).

Plate 10, moreover, application of paint even in the direction of the advancing portions Allows horizontal adjustment of the guns position for may move away from or towards each other).

The guns have a vertical (vertical axis) and a vertical axis to the carrier system (2), perpendicular to each other. two rotational axes, one perpendicular (horizontal axis) to the gun's own axis. can be adjusted accordingly.

Downstream of the spray assemblies in the guides (11), there is a the filter is housed; This is the paint that is likely to be present in the paint to be sprayed. to prevent roughness, clogging of the nozzle and to ensure a smooth paint application. allows it to be blocked.

Guns for applying paint, any other commercial paint can be changed with the spray mechanism.

Claims (1)

REQUESTS . The apparatus (1) for painting the products, comprising a conveying system (2); it includes at least one device for applying the paint (4) fixed to the slide lever (5), at least one suction system, the air collection box (3) obtained with a longitudinal axis (A) perpendicular to a direction of advancement (D) of the products, The air collection box (3) is in semi-circular shape and its feature is; characterized in that the slide lever (5) has a shape that is at least partially complementary to that of the air collection box (3). . It is a device according to claim 1 and its feature is; The slider arm (5) inside is empty and the paint (8) and compressed air (9) are carried to the paint application device (4) in which the tubes work. . It is a device according to claim 1 or 2, and its feature is; in which the slide arm (5) is covered with a surface coating, for example, TEFLON®, which allows them to be cleaned easily. . A device according to any of the previous claims, and its feature is; and further comprising a belt (6) that adjusts the slider lever (5) in motion and the width and position of the belt (6), such as to allow a compartment (21) to be closed, in which the support elements (22, 23) of the slide lever (5) of the paint particles entering the transition organs of the arm (5). It is a mechanism according to claim 4 and its feature is; in which the supporting elements (22, 23) support a central part (5a) of the slide arm (5a, 5b). . It is a device according to claim 4 or 5, its feature is; in which the belt (6) is placed in the longitudinal symmetry (A) axis of the air collection box (3). . It is a device according to claim 5 or Member, and its feature is; in which the supporting elements (22, 23) comprise a tubular element (22) and a carrier (23) in which the central part (5a) of the slide arm (5) is fixed to the carrier (23) and the latter with the tubular element (22). air trapping to allow the slide lever (5) to move the tubular element 22 from one longitudinal end of the air collection box (3) to the opposite longitudinal end of the air collection box (3), in which it is slidably supported and fixed to the belt (6) that adjusts the slide lever in motion. elongation of the box (3) along its entire longitudinal extension. The device according to any of the claims 5 to 7, characterized in that; and also a slot (25) obtained in the air collection box (3) for the placement of the supporting elements (22, 23) and the transition elements of the slide lever (5) and the slide lever ( 5) includes a pair of elongated elements (26) placed on the sides of its central portion (5a). The device according to any of the claims 5 to 8, characterized in that; and also two paint application devices (4), a slide lever (5) with its lateral sections (5b), which are placed on opposite sides with respect to the central part (Right) and which support a corresponding paint application device (4) and conform to the shape of the air collection box (3). each lateral portion (5a) having a shape that is at least partially complementary. 10. It is a device according to claim 9, its feature is; each lateral part (5b) also has a tip obtained with adjustment guides (10, 11) for adjusting a position of the respective paint application device (4), and the position of the paint application device (4) on the adjustment guides (10, 11) It is adjustable both vertically (moving the paint application device away from or towards the products to be painted) and horizontally (ie moving the devices away from or towards each other). It is a device according to claim 10, and its feature is; each lateral part contains a filter for the paint (27) placed in the vertical guides (11) of the adjustment guides (10, 11) for filtering the applied paint, especially the filter (27) at the lower end of the vertical guide (11). It is arranged in a detachable way. 12. A device according to any one of claims 9 to 11, characterized in that; in which the slide lever (5) has an axis of symmetry parallel to the longitudinal symmetry (A) axis of the air collection box (3), and the lateral parts of the lever (5) (5b) are symmetrical with respect to the central part (Sa) of the slide lever (5) . 13. A device according to any of the preceding claims, and its feature is; in which the slide lever (5) has a position that sticks to the air collection box (3) as close as possible without sacrificing their mobility, especially having a distance ranging from 5 mm to 150 mm from the air collection box (3). 14. A device according to any of the preceding claims, characterized in that; and a control device of the dyeing (30) suitable for adjusting a stroke (31) of the slide lever (5) based on the dimensions of the product to be dyed, the fixing means (29) and the dimensions detected by the fixing means (29), optionally therein the control device (30) is suitable for adjusting a speed (32) of the slide lever (5). Apparatus (1) according to any one of claims 1 to 14, in particular for dyeing products having a substantially flat area, comprising a conveying system (2); It includes at least one device (4) for applying the paint fixed to the slider arm (5), at least one suction system, an axis perpendicular to a direction of advancement of the products, and the air collection box (3) of the spray booth having a semi-circular shape. The sliding arm (5) has an inclined shape that is complementary to the air collection box (3) and the position of the arm (5) as close as possible to the air collection box (3), without compromising their mobility.