KR19990049935A - Agricultural sprayer hose by double layer knitting and triple extrusion and its manufacturing method - Google Patents

Abstract

The present invention relates to a method for manufacturing a hose used for agricultural spraying machines. In the related art, in the conventional sprayer hose manufacturing method in which a screening layer is formed between an inner tube and an outer tube, the present invention sequentially processes a primary knitting process on an outer surface of an inner tube to be extruded. And extruding the resin in the molten state composed of the same material as the inner tube to the outer surface of the primary knitting yarn to form an adhesive coating layer, and then performing a second knitting process on the upper surface of the adhesive coating layer (resin heat-fusion welding coating layer) The first and second yarns and the inner tube and the outer tube, which constitute the screening layer, are extruded through the outer layer, and the bonding state is structurally firmly reinforced by the adhesive coating layer through resin heat fusion, and the sprayer hose is uniformly applied in a single work line. It came out and produced in a single process.

Description

Agricultural sprayer hose by double layer knitting and triple extrusion and its manufacturing method

The present invention relates to an agricultural sprayer hose manufacturing method for connecting a pesticide spraying container and a pesticide supply container that is mounted on a pesticide sprayer or a person's back.

In general, various vegetables, flowers, and fruits grown through vinyl houses or glass houses are used to prevent pests by spraying pesticides in seasons that are susceptible to pests, depending on the characteristics of the crops. A pumping means is provided inside the storage container into which the pesticide is put, and the pumping means is operated as necessary, thereby compressing the internal pesticide and gasifying. The vaporized pesticide in the gasified state is sprayed with the pesticide spray bottle and water discharged to the outside through the spray head. Pesticide reservoirs with a suitable mix of pesticides should be prepared and interconnected through the sprayer hoses, where the sprayer hoses must be structured to withstand internal pressure.

As described above, the manufacturing method of the conventional pesticide sprayer hose subjected to internal pressure will be described by the process through FIG. 1, and the configuration of the hose made through the manufacturing method will be described with reference to FIG. 2.

That is, when the compound raw material mixed with various synthetic high molecular compounds in the primary extruder 1 is melted and pushed out by a high temperature in the compressor, the predetermined diameter is determined according to the shape of the mold 1a on the discharge port side. The inner tube having an inner tube 8 is rapidly cooled along the cooling line 2 while being extruded, and the inner tube thus produced is moved along the take-out machine 3 and wound up through the take-up machine 4 and cut into a predetermined length. One process, an extrusion process, is performed.

At this time, the inner tube produced through the above-mentioned one step is a primary semi-finished product, in order to prevent the shape change of the inner tube by fusion sealing at one end and filling the air through the compressor at the other end and then plugging or sealing with a stopper. Packed in plastic after sealing.

Thereafter, two steps are performed, which are an adhesive coating and a knitting process for knitting the outer surface of the inner tube 8 made through the inner tube hose extrusion process.

After opening the inner side of the inner tube, which is the first semi-finished product made through the first step, open both sides of the inner tube, and pass one end of the inner tube through the adhesive bottle and fix it to the top of the center of the loom.

Then, as the inner tube passes through the center of the loom (5), a plurality of bobbins in which the threads are wound are twisted to the outer surface of the inner tube (8) in a form in which they cross each other, and the knitting operation proceeds, wherein each thread is lattice as many as the number of bobbins. The knitting yarn is woven and forms the screening layer (H) attached between the actual inner tube and the exterior to be described later while knitting is made only in the circumferential direction to the outer surface of the inner tube, thereby forming the inner tube (8) and the screening layer (H). The glue buried in between is injected into the steam air generated in the steam boiler (dryer) (6) to make a secondary product after drying.

The secondary semi-finished product made through the two-step process of forming the screening layer on the inner tube outer surface is made of a nebulizer hose through the three-step secondary adhesive application and external coating process.

The secondary adhesive application and exterior coating process occurs when the adhesive is applied to the outer surface of the secondary semi-finished product, that is, the outer surface knitting portion of the inner tube 8, and the adhesive is dried while passing through a drying chamber 6 ′ having a heater built therein. Passing the second extruder 7 while preventing the protruding and contact stiffness of the surface of the product due to the gas to pass through, after the exterior (9) is coated and extruded to the outer surface of the inner tube, and the drawer (3) through the cooling line (2 ') ') And the winding machine (4') is to produce a finished body wound in a predetermined volume.

However, the conventional agricultural sprayer hose manufacturing method includes an inner tube hose extrusion process for extruding an inner tube having a predetermined diameter, applying an adhesive to form a screening layer by knitting the outer surface of the molded inner tube; The knitting process and the secondary adhesive application and exterior coating process for extrusion coating the external appearance on the inner side of the knitted inner tube are separately divided to carry out the body process, which increases the number of working processes and thus the labor cost. There was a concern that contamination or damage during the transfer of the product, the occurrence of defects occurring naturally between processes, and the request for the packaging means for the semi-finished product after each process had a problem of rising costs.

In addition, the knitting method constituting the judging layer has a staggered lattice winding as the yarns coming out of a plurality of bobbins rotating in an infinite orbit on the inner tube surface move in a zigzag form to extend the knitting work time. One of the features of the inner tube is to suppress the expansion of the inner tube when pressure is applied, and to firmly adhere to the inner and outer parts to strengthen the reinforcement of these (inner tube, outer), but in general, the adhesion state of the examination layer is poor, During the bending process where the hose is continuously bent and stretched, the inside and the outside of the screening layer fall easily, and the structure of the screening layer is disturbed, so that it is not possible to maintain a constant gap or the screening layer is circumferentially woven. Contraction and expansion of both sides causes severe change in length, so screening of finished hose There was a problem that the layer organization was not uniform and could not fulfill its role as the jury.

Therefore, the present invention was developed in order to solve the conventional problems, the object of the present invention is to extrude the inner tube in a predetermined form in the nebulizer hose is subjected to internal pressure, and then to the outer surface after knitting a double-layer knitting yarn two times By carrying out a series of spray coating hose manufacturing process of extrusion coating quickly and easily in a single work line, it provides a double spray yarn and triple spraying agricultural sprayer hose and its manufacturing method to shorten the work process and reduce labor costs. .

Another object of the present invention is to perform a double knitting yarn forming a screening layer between the inner tube and the outer one of the yarns from each bobbin while the bobbin rotates in two shafts in the irrigated shaft in the opposite direction to each other The first knitting yarn is performed in one direction and the second knitting yarn is made on the upper surface of the first knitting yarn so that two knitting operations can be performed at the same time during the inner pipe and exterior extrusion process. It is arranged in equal intervals at predetermined positions according to the circumferential size of the inner tube and supplied in the longitudinal direction of the hose so that the rotary chamber is superimposed in the circumferential direction thereon so that internal pressure is applied to both sides of the inner tube when the inner pressure is applied to both sides of the inner tube. The present invention provides a spray bottle hose and a manufacturing method of the agricultural sprayer hose by triple extrusion that prevents the expansion or contraction action. As it has.

1 is a process chart showing a conventional sprayer hose manufacturing process,

Figure 2 is an illustration of a stepped incision in the sprayer hose passed through a conventional manufacturing process,

Figure 3 is a process chart for explaining the nebulizer hose manufacturing process of the present invention,

Figure 4 is an illustration of a stepped incision in the sprayer hose passed through the manufacturing process of the present invention.

* Explanation of symbols for main parts of the drawings

10: primary extruder 11, 18: cooling line,

13: primary knitting yarn 13a: rotating chamber of the primary knitting layer

13b: linear chamber of primary knitting layer 14: secondary extruder

14a: adhesive coating layer (resin heating fusion layer) 15: hot box

16: secondary yarn 17: tertiary extruder

20: inner tube 21: appearance

In order to achieve the above object, the present invention provides a conventional nebulizer hose manufacturing method in which a screening layer is formed between an inner tube and an outer surface, and sequentially performs a primary knitting process on an outer surface of an inner tube extruded from a primary extruder and performs primary knitting. As the inner tube passes through the secondary extruder, the adhesive coating layer is extruded to the exterior, and the secondary coating process is performed on the upper surface of the adhesive coating layer. It is manufactured in a single process in the work line, and the screening layer through the primary and secondary knitting yarns is firmly attached to the inside and the exterior to increase structural rigidity.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Example 1

Figure 3 is a process chart for explaining a sprayer hose manufacturing process according to the present invention.

The inner tube 20 having a predetermined diameter is provided with a primary extruder 10 which is extruded to a predetermined length, and the rotary chamber 13a and the linear chamber (13a) to the outer surface of the inner tube exiting through the mold 10a mounted on the extruder. A primary knitting process is performed to simultaneously perform the primary knitting operation of 13b).

Then, a secondary extrusion process 14 for forming an adhesive coating layer 14a through resin thermal fusion is formed on the outer surface of the primary knitting yarn 13, and a secondary knitting 16 process is performed on the upper surface of the adhesive coating layer 14a. On the other hand, it is provided with a third extrusion step (17) in which the exterior 21 is extruded to the outer surface through the second knitting process.

In forming the inner tube, the outer tube, and the examination layer through the above processes, the wound form of the primary knitting layer 13 arranges the straight yarn 13b at equal positions at predetermined positions according to the circumferential size of the inner tube to extend the length of the hose. While supplied to the rotary chamber 13a is superimposed on it.

In the illustrated embodiment, the second extrusion process 14 is a resin coating heat-bonded to the surface of the inner tube made of the same material as the synthetic resin in the molten state while the inner tube passed through the primary knitting 13 process. To the upper surface of the inner tube, and then the secondary knitting layer 16 is knitted on the upper surface of the adhesive coating layer in the same manner as the rotating yarn knitting method described above, wherein the secondary braiding firmly adheres to the surface of the adhesive coating layer. The burst pressure and durability as a hose subjected to internal pressure through the screening layer (S) consisting of (primary, secondary knitting, adhesive coating layer through resin heating fusion) become very excellent, and the inner tube (20 through the resin heating fusion adhesive coating layer) ), Appearance 21 and of course multi-layer knitting are firmly attached so that no peeling phenomenon occurs at all, and this series of work processes are performed in a single process to shorten the work time of hose fabrication. It is good.

Figure 4 is an illustration of a stepped incision through the nebulizer hose passed through the manufacturing process of the present invention.

The inner tube 20 extruded to a predetermined diameter through the primary extruder 10 is provided, and the outer surface of the inner tube is primarily a primary knitting layer 13 in which a straight chamber 13b and a rotating chamber 13a are knitted. Consists of.

As such, after forming the primary knitting layer, the adhesive coating layer 14a through resin heat fusion is passed through the secondary extruder 14 to the top surface of the primary knitting layer.

Then, the secondary yarn extruder layer 16 is manufactured by passing through the secondary extruder to the upper surface of the inner tube extruded from the resin fusion adhesive coating layer.

And the inner tube 20 is finally passed through the third extruder 17, the exterior 21 is extruded.

In the drawings, reference numerals 11 and 18 denote cooling lines for forcibly cooling the product that has passed through the extruder, and reference numerals 12 and 19 illustrate a drawer for moving the hose, and reference numeral 15 denotes a heat box having a heater built therein ( I) are shown respectively.

The present invention constituting such a manufacturing method first extrudes the inner tube having the same diameter as the conventional agricultural sprayer hose through the primary extruder 10 and the extruded inner tube 20 is pushed in one direction while the cooling line 11 Through the rapidly cooled sieve extractor 12 to enter the primary knitting 13 process.

As the inner tube entering the primary knitting process proceeds in one direction, the linear thread is supplied at a predetermined position according to the circumferential size of the inner tube at equal intervals from the first bobbin of the primary knitting process and is supplied in the hose length direction. The plurality of bobbins assembled on the two rotating plates are knitted in the circumferential direction while being wound in opposite directions.

The inner pipe through the primary knitting process is again passed through the secondary extruder 14 while the molten synthetic resin is fused to the inner tube surface made of the same material, the adhesive coating layer 14a is extruded.

Then, the inner tube 20 formed with the adhesive coating layer through the resin extruded to the outer surface through the secondary extruder 14 softens the tissue of the adhesive coating layer 14a while passing through the hot box 15 having hot heat. Enter the secondary knitting machine 16.

The secondary knitting 16 process is securely attached to the adhesive coating layer while forming the same knitting as the rotating yarn knitting operation of the primary knitting machine 13, and finally the exterior 21 passes through the tertiary extruder 17. While being extruded to the inner tube outer surface, the nebulizer hose thus prepared is wound to a predetermined length through a winder and packaged in a final plastic wrapper.

In this way, the screening layer (S), which has been completed in two layers of knitting, is firmly adhered between the inner tube 20 and the outer tube 21 made through the extrusion process through the adhesive coating layer 14a. Of course, the hose fabrication process is quick and easy in a single process line.

In the present invention as described above, in the manufacture of a sprayer hose for pressure applied to the internal pressure, forming a knitting yarn forming a screening layer formed between the inner tube and the exterior in two layers, by heating the synthetic resin to the upper surface of the primary knitting yarn of the inner tube Forming an adhesive coating layer through the resin heating fusion made in the molten state, and manufacturing a secondary yarn on the upper surface of the adhesive coating layer and heat-melting the resin of the same material between the inner tube and the exterior through the adhesive coating layer The structural strength of the exterior is strengthened further, and the formation of the screening layer together with the production of the inner pipe and the exterior is made quickly and easily in a single work line, which shortens the work time and the number of processes, and greatly reduces labor costs.

On the other hand, in the primary knitting yarn in the multi-layer knitting process, the linear yarns are arranged at predetermined positions according to the circumferential size of the inner tube and supplied in the hose length direction, so that the rotary yarns are superimposed in the circumferential direction on the horizontal pipe direction so as to be superimposed thereon. It is a new useful invention that provides a high quality nebulizer lake that prevents the expansion and contraction of the length of the hose to prevent the expansion and shrinkage of the hose from the internal pressure acting as a.

The above is only one embodiment of the present invention, and the present invention is capable of various changes and modifications within the scope of the elements of the present invention.

Claims (3)

In a conventional nebulizer hose manufacturing method in which a worm is formed between an inner tube and an outer tube, the primary knitting yarn 13 is sequentially performed on the outer surface of the inner tube 20 extruded from the primary extruder 10, and the primary knitting yarn is As the inner tube passes through the secondary extruder 14, the resin heat-bonded adhesive coating layer 14a is extruded to the outer surface, and the secondary knitting 16 process is performed on the upper surface of the adhesive coating layer, and then the secondary knitting yarn passes through the tertiary extruder 17. The outer surface 21 is extruded to the outer surface to manufacture the inner tube 20, the outer 21 and the screening layer S in a single process in a single process, and the screening layer through the primary and secondary yarns is inside, the exterior ( 20) (21) is a method of manufacturing a sprayer hose for agricultural spraying by double-layer knitting and triple extrusion characterized in that it is firmly attached to the structural rigidity. According to claim 1, wherein the rotary yarn is placed thereon while the linear yarn 13b is arranged at predetermined positions at predetermined positions along the circumferential size of the inner tube 20 during the primary knitting yarn 13 process. Method for manufacturing a sprayer hose for agriculture by multi-layer knitting and triple extrusion characterized in that the first knitting process is carried out at the same time by overlapping knitting. The inner tube 20 having a predetermined diameter, the primary knitting yarn 13 in which the rotary chamber 13a and the linear yarn 13b are knitted on the outer surface of the inner tube, and the resin in the molten state are extruded to the outer surface of the primary knitting yarn. In a series of sequential processes in which the formed resin heat-bonding adhesive coating layer 14a, the secondary knitting yarn 16 that is braided to the upper surface of the adhesive coating layer and firmly adhered to the adhesive coating layer, and the exterior 21 are extruded to the outer surface of the secondary knitting yarn Agricultural sprayer hose by multi-layer knitting and triple extrusion characterized in that formed integrally by.