JP2779932B2 - Manufacturing method of air-filled hose bundle and its manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of sealing compressed air in a hose during manufacture of a hose bundle for winding and cutting a hose (tube) coming out of an extruder at a fixed length. Related to the device.

[0002]

2. Description of the Related Art A hose made of rubber, plastic, or the like is manufactured and stored as a sufficiently long bundle, and if necessary, is wound into a bundle of a length for sale. Since the bundles are stacked during storage, the hoses of the bundles stacked below are not perfectly round in cross section, and tend to be slightly crushed. In order to prevent this deformation during storage, each time one winding is wound up, press the compressed air injection gun against the rear end of the hose, fill the entire length of the hose with compressed air, and then crimp the tail with a welding machine. It is sealed.
Note that the front end of the extruded hose is conventionally sealed. This is because, during the extrusion, the air pressure of 2 to 20 mmAq is continuously sent from the extrusion head in order to keep the soft hose still round.

[0003]

The technology for mass-producing hoses by extruding materials such as rubber and plastic with an extruder has advanced remarkably in recent years, and fully automatic control has become commonplace. Therefore, if a compressed air filling step by hand is inserted in the middle of the production line, productivity is impaired. The present invention improves this.

[0004]

According to the present invention, an air injection needle is used as a means for forcing compressed air of about 1.0 kg / cm ² into a wound hose. That is, the middle of the hose exceeding the required feeding length is pressure-sealed and the needle is pierced immediately before. When the entire length of the bundle is filled with compressed air with the needle, the needle is pulled out by pressing and sealing immediately before the position of the needle. The hose is divided back and forth between the sealing portions immediately before and immediately after the removed needle hole.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A method for producing a bundle of air-filled hoses according to the present invention is a method for producing a bundle of hoses for winding and bundling a hose coming out of an extruder at a fixed length. Is wound around a bobbin, and the middle of the hose is pressure-sealed at a point where the length has been wound. Fill the entire length with compressed air of the required pressure, then make a winding tail seal immediately downstream of the needle position, remove the needle, and connect a hose between the two seals on the way and at the end of the winding. It is characterized in that the cut and wound hose is bound as a bundle, and the remaining intermediate sealing portion is wound around a bobbin as a hose tip sealing portion of the next bundle.

In the apparatus for manufacturing a bundle of air-filled hoses according to the present invention, the traverse device of the hose winder is provided with a measuring section, an air injection needle, a hose cutting blade, and a welding for crimping and sealing the hose along the hose feed path. When the hose feed length exceeds the required length of the winding bundle, the measuring section stops winding of the winding machine,
The welding machine presses and seals the middle of the hose at that position, and the injection needle injects air immediately downstream of the middle portion of the hose to take up air between the previously sealed hose winding end. The entire length of the hose is filled with compressed air, and when the welding machine makes a tail seal portion immediately after the needle, the needle is pulled out, and the cutting blade cuts the hose between the seal portions before and after the needle hole. The sequence of each operation to be performed is controlled,
It is characterized in that the rear side is the winding end of the next bundle.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of an embodiment of a method for manufacturing a bundle of air-filled hoses according to the present invention. FIG. 1A shows a winding frame (parasol bobbin) 1, a traverse guide pipe 2 of a winding device, an ultrasonic welding machine 3, a hose cutting blade 4, an air injection needle 5, a feeding guide pipe 6, a feeding roller 7, and a hose H. It is drawn simply. The winding frame 1 rotates at a fixed position, and is mounted on a traverser that repeats a left-right movement in accordance with the width of the winding drum during winding from the traverse guide pipe 2 to the feeding roller 7 (described later). FIG. 1A shows a reel 1
Shows that the hose H is stopped at a position where the hose H has been wound up for a certain length, and the middle of the hose is press-bonded by the welding machine 3 to form a sealed portion x on the way. Note that the end of the hose H, that is, the end wound around the bobbin 1 is sealed in advance.

In FIG. 1B, since the air injection needle 5 is protruded immediately downstream of the intermediate sealing portion x, the feeding roller 7 is rotated in the reverse direction so that the intermediate sealing portion X is located slightly upstream of the needle 5, that is, The drawing shows a state where it is pulled back to the vicinity of the exit of the insertion guide pipe 6. FIG. 1C shows that the needle 5 is pushed up from the peripheral wall opening of the guide pipe 6 to the hose H to inject compressed air. FIG. 1D
After the hose H is pressure-sealed and sealed by the welding machine 3 slightly downstream of the position of the needle 5 to form a tail sealing portion y after winding,
Shows where needle 5 has been withdrawn.

FIG. 1E shows a state in which the cutting blade 4 cuts the hose H between the preceding sealing portion x and the later winding rear sealing portion y. FIG. 1F shows that the winder is driven and retracted toward the bobbin 1 in order to wind the cut end having the tail sealing portion y on the bobbin. FIG. 1G shows a state in which the feeding roller 7 is driven to push the cut end having the sealing portion x on the way, to wind it around the winding frame, and to resume winding. When the bobbin 1 is a parasol bobbin as shown in the figure, the parasol is immediately laid down, the parasol is pulled down, the bundle is pulled out, and the next hose tip may be wound immediately, or a plurality of ordinary bobbins can be replaced In order to prepare for this, it is a matter of course that a method in which the wound winding frame is replaced with a new winding frame is used.

FIG. 2A shows a winding of a garden hose made of vinyl chloride as an example of the winding W. A length of 100 m is defined as one winding, and three places are bound by a band b. This is shown in FIG.
When stored in a warehouse in a stack, the lower hose is crushed and permanently deformed. 5-20m for commercial use
If it is re-wound in such a degree, a problem due to the cross-sectional deformation of the hose is likely to occur, and the commercial value is also reduced. Since stack storage is inevitable, applying cross-sectioned hose internal pressure prevents cross-sectional deformation.

FIGS. 3A and 3B show an example of an air-filled hose bundle manufacturing apparatus to which the present invention is applied, which is equipped with an automatic binding apparatus. The bobbin 1 is a parasol bobbin, two of which are swiveled alternately, wound up on the upper side and bound on the lower side. Therefore, a binding device 9 is provided on the lower side, and a traverse device 10 for reciprocatingly moving the supply path Ho of the supply hose to the width of the winding drum is provided on the upper side. Originally, the traverse device 10 only needs to move the guide roller 11 right and left, but in the present invention, the guide roller 11 is placed on the operating table 10a that moves left and right.
In addition to the above, a measuring section 8, a feeding roller 7, an air injection needle 5, a cutting blade 4, and an ultrasonic welding machine 3 are mounted along a hose supply path Ho that goes straight, and these sets are moved together in a lateral direction.

When the upper bobbin 1 of FIG. 3A winds up the hose H by a predetermined length, for example, 100 m, the measuring section 8 which has been measuring transmits and stops the motor of the winder and stops the bobbin 1. Then, as described with reference to FIGS. 1A to 1G, the ultrasonic welding machine 3 first seals the sealing portion x in the middle. Then, the hose H is slightly pulled back by the feeding roller 7, and the injection needle 5 is pushed up just downstream of the sealing portion x on the way to fill the entire length of the bundle with the compressed air.
0.2 to 1.0 for garden hose made of vinyl chloride
The internal pressure is set to kg / cm ² . Then, as shown in FIG. 1D, the tail sealing portion y is sealed by pressure bonding after the winding, and the injection needle 5 is removed. Before and after the needle 5 is removed, the front and rear of the needle 5 are closed by the middle sealing portion x and the tail sealing portion y, so that air in the hose does not leak from the needle hole. Hereinafter, the hose H is divided as shown in FIG.
The trailing end of the winding is wound as shown in F, and the sealed portion x is advanced toward the winding frame 1 as shown in FIG. 1G.

When the winding frame 1 has finished winding and winding at the upper position in FIG. 3, it turns to the lower position, where it is bound and the winding is removed. The binding device 9 is a well-known device, and includes a reel 9a of a binding band, a pair of band guide rails 9b for tightening the band around the binding position of the binding, and a driving mechanism thereof. When binding at three places as shown in FIG. 2A, the winding frame 1 is turned three times by rotating the winding frame 120 by 120 °. That is, the band guide rail 9b is advanced from the standby position indicated by the solid line in FIG. 3B to the position 9b 'indicated by the chain line to surround the winding (not shown) binding position, tightened through the band, and heat-pressed and fixed. Is performed three times. The entirety of the binding device 9 moves left and right along the rails, and the band guide rail 9b can move back and forth as needed.

Next, each of the above-described measuring section 8, feeding roller 7, air injection needle 5, cutting blade 4, and ultrasonic welding machine 3 will be briefly described with reference to FIG. 4A and 4B are elevational and side views of the measuring section 8, 8a is a measuring roller, and 8b is a rotary encoder, both of which are connected via gears to perform a measuring action. is there. The measuring roller 8a is attached to the base 13 via the swinging plate 12 and the rotating shaft 12a so as to be vertically rotatable, and is pulled downward by a spring 14. As shown in FIG. 4B, the hose H is sandwiched between the receiving roller 15 containing ball bearings and the measuring roller 8a, and advances to rotate the measuring roller 8a. The base 13 is fixed on the traverser operating table 10a.

FIG. 5 shows the feeding roller 7, the pressing roller 7a, and the geared motor 7b which rotates forward and backward. A pressing roller 7a hangs from an upper portion of the base frame 16 to which the motor 7b is attached.
The roller support frame 17 is supported by a fluid pressure cylinder 18 arranged on the upper surface of the base frame 16 and an elevating rod 18a which moves up and down in a guide cylinder 18b so that the hose H is suppressed and the roller 7a is properly suppressed regardless of whether the diameter is large or small. I try to drive. The pressing roller 7a is freely rotated by a ball bearing, and the lower roller 7 is supported by a bearing table 28 attached to the traverser operating table 10a, and is driven by a motor 7b. Regardless of the large diameter or small diameter of the hose H, it can be clamped by the V groove of the upper and lower rollers.

FIG. 6 shows a drive mechanism for supporting the air injection needle 5. The base 5a of the needle 5 has a tapered rear end, and is fitted and supported in a tapered hole at the lower end of the needle support tube 19. A compressed air hose indicated by an arrow A is connected to the compressed air receiving hole 20 of the support cylinder 19. The rear part, that is, the upper end side, of the needle support cylinder 19 is attached to the rod tip of the hydraulic cylinder 21, and the hydraulic cylinder 21 is
It is attached downward on a beam plate 23 that connects the upper ends of 22. The columns 22, 22 have their lower ends screwed into the traverser operating table 10a and stand upright.

The air injection needle 5 in FIG. 6 is drawn in a raised position, and when the fluid pressure cylinder 21 pushes the needle support cylinder 19 downward, the needle tip protrudes above the hose H. The hose H running under the needle 5 is in the guide pipe 6 illustrated in FIGS.
Compressed air can be injected by sticking to the upper surface. The guide pipe 6 extends the arm 6a horizontally to the left and right,
It is connected to a collar 6b that can be adjusted up and down along 2 and is fixed by a tightening screw 6c. Needless to say, the stroke of the hydraulic cylinder 21 that moves the air injection needle 5 up and down penetrates the upper surface of the hose H but does not reach the lower surface of the hose.

FIGS. 7A and 7B show an embodiment of the hose cutting blade 4. FIG. The cutting blades 4 are a pair of shearing blades of a type that sandwiches the hose H from right and left, and each has a driving fluid pressure cylinder 4a. The respective cylinders 4a are attached to the left and right bases 24 attached to the traverser operating table 10a so as to face each other, and the respective blades 4, 4 are attached to the side surfaces of the blocks 25, 26 at the rod end of each cylinder 4a. . Each blade 4,
Each of the guides 4 has a guide portion 4b extending below the supply path of the hose H to the other side. Is cut and separated to return. In FIG. 7A, the position where both the blades 4, 4 have finished shearing the hose H is indicated by chain lines. In addition, the hose H is moved from the place where it comes out of the feeding roller 7 to the cutting blade 4.
Until just before, it passes through the guide pipe 6 and passes through the traverse guide pipe 2 from the point where the cutting position and the welding position have been exited to the vicinity of the winding drum.

FIG. 8 shows the ultrasonic welding machine 3. 3a is an exciter, 3b is an anvil, 3c is an oscillator, and 3d is a base frame standing on the traverse operating table 10a. Note that the support 2a of the traverse guide pipe 2 is fixed adjacent to the downstream side of the welding machine 3, but this is not related to welding.
In FIG. 9A, the exciter 3a and the anvil 3b of FIG.
Are shown side by side in a state in which the extruder 3a is pulled up and then deformed by the elasticity of the hose H itself. FIG. 9B is a plan view of the latter, in which the crimping portions protrude on both sides of the hose H. When the material of the hose H is flexible, the protruded crimping portion is bent and can pass through even a cylindrical guide pipe. Otherwise, a square or other pipe may be used for the guide pipe 2 only.

Although one embodiment has been described above, it goes without saying that the present invention can be variously changed and applied according to the working conditions without changing the gist. In the description of the manufacturing method of FIG. 1, the arrangement of the ultrasonic welding machine 3, the cutting blade 4, the air injection needle 5, and the like had to be fixed, and the hose H had to be pulled back once. However, if the arrangement was not fixed, A parked hose can be easily moved. The apparatus for manufacturing a bundle of air-filled hoses according to the present invention has been described in connection with the embodiment in which the entire process up to bundling is completely automated. However, any other device may be used as long as it controls the sequence from the stoppage of the winding to the sealing by pressure, the injection of compressed air, and the cutting. The description of the sequence control is omitted because it belongs to a known technique.

[0021]

According to the present invention, if a bundle of elastic hoses made of rubber or plastic is stored in a stacked state for a long period of time, the hose section of the lower stage is permanently deformed into a slightly crushed shape. In the past, however, it was common knowledge in the industry that only when permanent deformation had a clear adverse effect on the rewinding operation and commercial value, a manual air encapsulation process had to be added to the hose winding production process. This invention revises this common sense. All windings of a hose that may be deformed in cross section due to stacking or the like can be automatically turned into air-filled windings by the method and apparatus of the present invention.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view in which the method of manufacturing a bundle of air-filled hoses according to the present invention is divided into A, B, C, D, E, F, and G in this order.

FIG. 2A is a perspective view of an example of a hose bundle. B is an explanatory view of a state where the winding bundles are stacked.

FIG. 3A is an elevational view of one embodiment of the manufacturing apparatus of the present invention. B is a plan view of FIG.

FIG. 4A is an elevation view of a measuring section. B is a side view of FIG.

FIG. 5 is an elevational view of a feeding roller.

FIG. 6 is an elevation view of the air injection needle related device.

FIG. 7A is an elevation view of a cutting blade related device. B is a plan view of FIG.

FIG. 8 is an elevation view of the ultrasonic welding machine.

FIG. 9A is an elevation view of the hose during and after crimp sealing welding. B is a plan view of FIG.

[Explanation of symbols]

 Reference Signs List 3 ultrasonic welding machine 4 cutting blade 5 air injection needle 8 measuring part x intermediate sealing part y winding tail sealing part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 54/00-54/10 B65H 75/00-75/40 B29C 47/00-47/96

Claims (2)

(57) [Claims] 1. A method for producing a hose bundle for winding and bundling a hose coming out of an extruder at a fixed length, wherein a hose having a sealed end is wound around a bobbin and wound at a fixed length. The middle of the hose is press-sealed and sealed, and an air injection needle is protruded immediately downstream of the middle of the sealed portion, and the entire length of the hose between the two sealed portions is filled with compressed air of a required pressure. Immediately downstream of the position, a winding tail sealing portion is formed, the needle is withdrawn, the hose is divided in the middle and between the sealing portions of the winding tail, and the wound hose is bound as a winding. A method for producing an air-enclosed hose bundle, characterized in that the remaining halfway sealed part is wound around a bobbin as a hose tip sealing part of the next bundle. 2. A traverse device of a hose winding machine is provided with a measuring section, an air injection needle, a hose cutting blade, and the like along a hose feeding path.
And when the hose feed length exceeds the required length of the winding bundle, the measuring section stops winding of the winding machine, and the welding machine is connected to the hose at that position. The middle part is pressurized and sealed, and the injection needle injects air just downstream of the halfway sealed part, filling the entire length of the winding hose between the previously wound hose winding end with compressed air, When the welding machine creates a tail seal portion after winding, the needle is pulled out immediately downstream of the needle, the needle is pulled out, and each operation in which the cutting blade divides the hose between the seal portions before and after the needle hole is sequence-controlled, An apparatus for manufacturing a bundle of air-filled hoses, characterized in that the front side of the dividing portion is a rear end of the bundle and the rear side is a winding end of the next bundle.