KR20000062197A - Machine for conditioning laminar flexible products such as industrial hides and skins - Google Patents

Abstract

The regulator for adjusting thin and elastic products, such as industrial leather and leather, includes at least one regulating unit (2) traversed by the treated product, a blower (9, 12) for blowing and drawing air towards the product. Consists of a series of air jets that simultaneously blows the air in both directions of the product in the transverse direction of the product. The product is moved substantially along the horizontal plane G by paired annular yarns 30, 30 ', 35, 35' and is sprayed unevenly across the effective width of the control passage. Each pair of threads lies on opposite sides and contacts to support the product P, moves along the passageway and frees their surface. Optionally, the advancing means are formed by a pair of continuous belts facing each other to hold the product firmly while allowing passage of the exhaust air.

Description

MACHINE FOR CONDITIONING LAMINAR FLEXIBLE PRODUCTS SUCH AS INDUSTRIAL HIDES AND SKINS}

The present invention generally applies to the processing of stretchy and thin products, such as leather, leather, and in particular with regard to machines which control such products by means of properly treated air.

It is known that unfinished or finished products that absorb water well and contain high moisture, such as industrial leather, are not suitable.

Therefore, such products must be dried by suitable machinery and plant equipment.

When the above products may be involved in the drying process, their results may be excessively or unevenly dried, so it is necessary to reduce the elasticity and strength by showing the risk of damage during the next treatment.

More known in products such as industrial leather, there must be a completion stage in which the impregnation of both sides is imparted with physical and chemical properties. In such a case, if the product dries only one side or only then dry on the other side, the failure increases on that side and prevents the removal of residual moisture from the inside of the product, which results in a bad smell for a long time.

It is therefore to be understood that in some industries, such as the tanning industry, the "control" of a product must be adequately supplied and it is necessary to accurately determine the residual moisture of the product for its naturalness and thickness as well as what is particularly required for finished and semi-finished products Means conditions to control and adjust.

As is known, machines and devices for drying thin, elastic products containing moisture are, for example, vacuum dryers in a discontinuous form. These machines provide a heating plate for drying on products such as leather and are placed precisely under high vacuum.

Water is released by the product in the form of steam and condensed and removed in the form of water.

Drying the leather from above may have between 30% and 50% moisture included and the content may be higher or lower depending on the given application.

Other types of drying equipment, such as the known chain drying equipment, hang on a continuous chain and dry the product, move unnoticed and continuously along an extended passageway for another process in the atmosphere, which means space and working time. Reduce Known devices are relatively inexpensive, but in fact are inconvenient due to their relatively low flexibility, and the handling of all products is the same, so the thickness and naturalness of other products suspended in the chain cannot be applied. What's more, the product is very long, but prominently locks in capital.

In a similarly known tunnel arrangement, the products are directed to a suitable air flow through the conduit, previously repeated supplying with a suitable regulator or moisture absorber and dried appropriately. In these known devices, the presence of moisture in the product is not removed in a uniformly controlled manner. In addition, the processing of the product is too late and does not allow application to the demands of production and is increasingly distinguished within a very short time. In this case, there is a clear fixation of economic losses and excess fixation of capital.

It is a first object of the present invention to provide a machine for the control of thin and stretchable products, in particular to allow for both sides control of the product and standard drying to prevent the retention of moisture inside them with industrial leather.

The aim is to achieve high throughput and effectiveness in order to understand the control of thin, flexible products, thereby preventing them from immobilizing as a result of large amounts of products and capital, thereby producing substantially flat and flawless products. will be.

It is an object of the present invention to provide a regulator having a property that allows high stretchability easily and to immediately adjust process elements according to processing conditions.

It is an object of the present invention to provide a regulator having a relatively simple and compact structure to reduce labor.

It is an object of the present invention to provide a regulator having a control section which is possible in a limited area.

Another object is to understand the machine for controlling productivity in the place where it is mounted, with the ability to apply specific requirements of size with similar products with leather and modular construction.

These and other objects are achieved by a machine for controlling leather and thin products comprising them, according to claim 1 having an inlet for the product to be treated and an outlet for the treated product. At least one control unit, means for advancing the product along the control passage between the inlet and outlet, means for circulation of air along the passage, the circulation means being provided on both sides of the product during It is characterized in that the air jet is configured to blow at the same time.

By simultaneously blowing air on both sides of the product, these later adjustments are faster and more efficient and allow for both cost and time reductions in the process. Preferably the air jet is blown out by a series of nozzles having a discharge port mounted on a surface facing the plane of the mounting plane of the product, the discharge ports facing each other and spaced apart from each other in the longitudinal direction.

In a preferred embodiment, each nozzle consists of side walls that are concentrated towards the discharge port.

Optionally, this outlet port may be arranged substantially above the planar wall and horizontal to the plane on which the leather is placed.

Advantageously, the discharge port extends substantially beyond the full width of the control unit and has a substantially fixed width.

Each successive nozzle is distributed in a defined width along the longitudinal extension of the regulating unit.

In the intention of the invention, the means for advancing the leather consists of a plurality of pairs of threads and parallel to each other along all the control passages facing the plane on which the product is placed, holding and touching these later ones firmly. Move along the passage.

Multiple pairs of threads are regularly spaced across the entire width of the control unit, and this method provides solid support for the process.

In terms of reducing the cross sectional area of the seal, it allows the movement of the product along the passageway during a substantially extended state, both sides being simultaneously exposed to the action of the air jet, thereby minimizing the process and adjustment time. Will be utilized.

Each thread has a ring-shaped structure defined as a passageway for controlling the product.

The specification of the machine for processing finished thin and elastic products, such as leather, is not exclusive and is not intended to be limiting in the future, but is for example only for reference to the enclosed drawings:

1 shows a general side view of a plant for the treatment of leather with an integrated first embodiment of a regulator according to the invention;

2 shows a side view of a part divided in the vertical length direction of the second embodiment of the regulator according to the invention;

FIG. 3 shows a plan view of the machine showing some parts of FIG. 2 transparent.

4 shows a front view of the machine showing some parts of FIG. 2 transparent

5 is a schematic diagram of a module unit of a machine according to the invention, partially cut along the V-V plane.

6 is a partial cross-sectional view along the vertical plane VI-VI of 5 degrees.

FIG. 7 is a cross-sectional view of the machine of FIG.

8 is an enlarged cross-sectional view of each of the machines along the VIII-VIII plane of 5 degrees

9 is an enlarged cross-sectional view of each of the machines according to the present invention.

FIG. 10 is a cross-sectional view of an enlarged view of each of FIG. 9. FIG.

Fig. 1 shows an installation L for processing a thin and elastic product, such as industrial leather P, which is generally indicated by reference numeral 1 as a regulator according to the invention. The installation (L) comprises the upper flow of the regulator (1) according to the invention, in which a known vacuum dryer (D) having a plurality of heating plates has leather contained in the drying unit and the residual moisture has 20% -40%. have. The down stream of the vacuum dryer (D) means that the leather (P) is subjected to a conditioning process, which means controlling and adjusting the residual moisture to maintain a 10% -20% step. Finally, the leather is moved to a known type of perching machine (S) to soften and thicken the bottom.

The regulator 1 can be applied separately between a machine and a treatment step, not the same as those shown in FIG. 1, without departing from the scope of the invention.

Moreover, the regulator can also be used to increase the moisture content, thereby giving the product a convenient tapping and partial deterioration while in the prior dry condition.

In addition, multiple control units may be installed in connection with any requirement by the user and the type of product being processed.

The regulator 1 is schematically depicted in FIG. 1 and has six module units 2, arranged substantially identically in line with one another. The products P move the treated product at the outlet for the pretreated product along a control passage extending substantially in the longitudinal direction A from the inlet 3.

While the product P moves, the later ones remain extended above the horizontal plane G, but this plane can be inclined or oriented vertically without departing from the invention.

2 shows a simplified configuration of the regulator according to the invention, the machine consisting of only two modular units with respect to each other and similarly supplying the inlet 3 and the outlet 4 for the product. .

Each unit 2 is formed by a box-shaped case 5 having a side surface like a metal plate. The top and bottom walls are actually flat. The inner space is determined by the predetermined width W and the length T, and supplies the dividing wall determined by the lower portion 7 and the upper portion 8.

The lower portion 7 is spaced for the passage of the product by means of suitable means of movement and means for a suitable air injection process.

According to the clearly illustrated 4 degrees, the upper part 8, on which the air circulation means resides, consists of one or more blowers 9 for the air circulation coming in from the outside through the inlet 10, whereby the lower part 7 Pass through the heat exchanger (11) before entering.

The treated air with its own regulating function is withdrawn from the lower part 7 and discharged to the outside by the discharge blower 12 through the discharge inlet 13.

According to the invention, the circulation means constitutes an air jet directed simultaneously to both sides of the product while the product P moves along the control passage.

More specifically, the air jet is generated by a series of nozzles 14 and 14 'having discharge ports 15 and 15' and arranged face to face with the plane of the product.

Preferably the blown air jet is directed transversely with respect to the direction of travel A while the product is in the control passage.

In addition, the discharge ports 15 and 15 'are arranged to face each other. Optionally, the discharge ports 15, 15 'are biased in the longitudinal direction, whereby the same general effect may be obtained.

The preferred embodiment of the nozzles 14, 14 'will be described later, and it will be apparent that the alternative forms may be equally applicable and may be eliminated within the same inventive concept.

In particular one or more blowing chambers 16 are defined by the lower part 7, which chambers have an approximate prism or cuboid shape similar to a horizontal drawer.

Advantageously, each chamber 16 supplies a pair of corrugated plates 17, 17 ′ having internally fixed or various stage lengths R, such plates being placed in a substantially facing relationship. , Symmetrical with respect to the intermediate plane (G) and transversely extending, the plane is determined that the product (P) has advanced. The corrugated plates 17 and 17 'are subdivided again in the chamber 16 in the middle 18 of the cylindrical space 19 above and the cylindrical space 19' below.

Preferably, the corrugations of the plates 17 and 17 'actually extend in the transverse direction with respect to the traveling direction A of the product. These corrugations are unstructured, spaced by length and define each wall 20, 21, 20 ', 21' inclined with respect to the mounting plane G, and each bottom wall 22 22 'is substantially parallel to plane G.

These bottom walls 22, 22 'supply a gap having a constant thickness M which defines the discharge ports 15, 15'. The nozzles 14, 14 ′ are thus generally constructed by gaps or discharge ports 15, 15 ′ formed on the side walls 20, 21, 20 ′ 21 ′ and the bottom wall.

Suitably, the outlet ports 15, 15 ′ extend approximately beyond the full width W of the adjustment unit 2. In addition, the continuation of the nozzles 14, 14 ′ is arranged at a constant distance from each longitudinal of the longitudinal extension of the unit 2.

Air inflow by the blower 9 and heating by the heat exchanger 11 are conveyed to the side manifold 23, which is common to the blowing chamber 16 and through each of the corresponding gaps 24, 25 a hollow space. Evenly distributed.

Air blown through the nozzles 14, 14 ′ and the air blown through the outlet ports 15, 15 ′ toward the product move along the hollow space while the plane G remains extended.

Optionally, a regulating valve or shutter may be supplied to each corresponding inlet gap and adjust the air flow rate in each blowing chamber 16 to allow the product to move along the passageway and be adapted to the condition as desired.

The discharged air exits the hollow space 18 through a single central clearance 26 and is supplied to each chamber 16 and passes through a side manifold common to all chambers 16. In order to maintain a controlled humidity level, the portion of the air that escapes through the machine can escape from the manifold 27 through the discharge blower 12 and out through the gap 13. At the same time fresh air is introduced by adjacent gaps.

Preferably the nozzle is sized to increase the speed of the outlet to 10 m / s or more.

Each chamber 16 includes an adjustment process step for the leather and consists of mechanical steps according to various elements of the leather such as shape, thickness and internal moisture content. The number of blowing chambers 16 is therefore determined by the working capacity of the machine.

Each adjusting unit 2 depicted in FIGS. 2, 3, 4 provides three blowing chambers 16 superimposed on one another.

In the preferred embodiment of the conveying means, those generally indicated by reference numeral 28 are formed by a pair of annular yarns 30, 30 'and are laterally in the transverse direction having a step of length U. Is formed in a relationship.

The annular thread 30, 30 ′ is wound on the end rollers 31, 32, 33, 34 in a horizontal manner in the hollow space 18 of the chamber 16, and the horizontal length a Is twice as long as the area T of each modular unit 2 in the longitudinal direction, thereby holding the leather P firmly in the plane G.

Therefore, the pair of adjacent seals 30, 30 'are initially defined toward the length a indicated along the arrow F. The second sequence of threads 35, 35 'is similarly laid down below the previous one and similarly wound around each end roller 36, 37, 38, 39 and indicated by an arrow at F'. The length b is defined backwards for the continuation of the pair of threads 30, 30 '. The second length c extends along the direction of arrow F between the previous a and b. The pairs of yarns 30, 30 ', 35 and 35' are therefore placed side by side and are set in control passages having a sinusoidal or maze form consisting of straight lengths a, b and c.

The overturning assembly 40 is supplied adjacent to the end roller and automatically supplies reversal of the product P between the respective lengths a, b and c and prevents operator intervention next time.

The paired yarns are arranged in a side by side relationship and are not undistributed throughout the effective width W of the unit 2 so that the product P is firmly supported therebetween. Thanks to the reduction in the thickness of the thread, the leather (P) is adapted to the airflow as a whole, thereby allowing for optimal control of both sides.

The yarns 30, 30 ′, 35, 35 ′ may be synthesized from a high strength material having a low elastic modulus such as Perlon.

According to an alternative embodiment, although not depicted in the figures, the means of progression are constituted by a pair of continuous belts, facing each other and firmly between them to regulate the product P, and thereby to the passage by the nozzles. Allow the flow of air.

The order in which the product P traverses the chamber 16 is predetermined at the discharge stage of the regulator 1 and may also differ from the description of the order without departing from the scope of the invention above. For example, the number of lengths a, b, c, can be different, for example even, so that the inlet part 3 and the outlet part 4 can be mounted at the same end of the machine instead of the different ends of the machine. May be

With the arrangement of lengths superimposed with the blowing chamber, the machine can move the product along a longer control passage with a smaller longitudinal extension.

Therefore, the machine will appear to be markedly densified with the same length of the control passages and the labor will include a notable reduction in spite of the same processed product.

In addition, thanks to the simultaneous action of high speed air jets on both sides of the product, later ones will appear after treatment, resulting in a substantial reduction in shrinkage and a substantially flat and even surface.

The regulator provides a clear and varied flow rate control and provides means to control the temperature and humidity of the regulated air, the valves and heaters, and the discharge of water and steam.

In addition, the regulator is known as the central control unit of the electronic system as a digital interface. This central control unit is connected to a suitable sensing means having an adjusting means for controlling the flow rate from above and adjusting the temperature and humidity of the air contained in the passage.

In addition, the air recirculation device may supply controlled air back instead of venting it to outside air to save energy.

The present invention is to provide a machine for the control of thin and elastic products, in particular, industrial leather, both sides of the product to prevent the maintenance of moisture inside the effect of achieving the standardized drying, thin and elastic products In order to understand the regulation of the process, the high throughput and the effect are seen, thereby preventing the immobilization as a result of a large amount of product and capital, thereby producing a substantially flat and flawless product. In addition, it is intended to supply a regulator having a property that allows easy elasticity, and has an effect of immediately adjusting process elements according to processing conditions.

Claims (15)

The at least one control unit 2 comprises an outer case for supplying an inlet 3 for processing the product, an outlet 4 for the already processed product P, an inlet 3 and an outlet 4 Means for moving the product vertically in the control passage between the (30, 30 ', 35, 35'), means for the circulation of air along the passage, the air circulation means is composed of air jet, Conditioner for elastic thin products, such as industrial leather, characterized in that they are poured on both sides simultaneously while the product moves along the aisle. The method of claim 1, Air jet is generated by a nozzle (14, 14 ') having discharge ports (15, 15') located in the opposite direction with respect to the plane (G) of the product (P) proceeding in the processing step . The method of claim 1, The air jet regulator, characterized in that directed toward the transverse direction with respect to the direction (A) of the product (P). The method of claim 2, Discharge ports (15, 15 ') are arranged in a facing relationship, characterized in that each biased in the longitudinal direction. The method of claim 2, The nozzle (14, 14 ') is characterized in that it comprises side walls (20, 21, 20', 21 ') concentrated towards the outlet port (15, 15'). The method of claim 5, The side walls 20, 21, 20 ′, 21 ′ are connected by bottom walls 22, 22 ′ parallel to the mounting plane G, and the discharge ports 15, 15 ′ are connected to the bottom walls 22, 22. 22 ') formed on the regulator. The method of claim 6, The outlet port (15, 15 ') is characterized in that it extends almost over the entire width (W) of the control unit (2). The method of claim 7, wherein And a discharge port has a constant width (M). The method of claim 2, And the nozzles (14, 14 ') are arranged at a constant distance (R) along the longitudinal extension of the adjusting unit (2). The method of claim 1, Eight regulating units (2) each comprising a blowing chamber (16) for dispersing air at the nozzle (14, 14 '). The method of claim 1, The advancing means comprises a pair of parallel yarns 30, 30 '35 and 35', which are arranged on the opposite side to the mounting plane G of the product P and are firmly supported and progress along the passageway. Conditioner. The method of claim 1, Proceeding means is composed of a pair of continuous belt of the network tissue and face each other, the regulator characterized in that the holding firmly during the product (P) by allowing a passage for blowing air to the product. The method according to any one of the preceding claims, The overall passage through which the product (P) is sinusoidal, comprising a plurality of consecutive adjacent lengths (a, b, c), characterized in that they are horizontal and overlap each other. The method of claim 1, The air circulation means includes at least one first blower 9 for circulation of air in the blow-in chamber 16, the heating means 11 and a means for regulating the humidity of the air and a second for drawing out the exhaust air. And an outlet blower (12). The method of claim 1, The circulation means further includes means for adjusting and sensing the flow rate, temperature and humidity of the blown air, and the central control unit is connected to means for adjusting the flow rate, adjusting and sensing the temperature and moisture of the blown air. Conditioner.