JP4434331B2 - Fiber sheet prick processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a prick processing apparatus that makes it possible to effectively and efficiently adjust the properties of a fibrous sheet using a needle pricker.
[0002]
[Prior art]
As a conventional example of the needle pricker mentioned above, there is a needle punching device for adjusting the texture of a woven fabric proposed by the present applicant in Japanese Patent Application No. 8-112438. The apparatus includes a rotating drum wound with a soft sheet of felt, rubber or the like on the surface, an inlet side guide roll for guiding a continuously supplied woven fabric onto the outer peripheral surface of the rotating drum, and an outer peripheral surface of the rotating drum. An outlet-side guide roll that turns the woven cloth and leads it to the outlet; and a plurality of needle rolls arranged in parallel to the drum and arranged on the outer periphery of the drum, and an infinite number of needles planted on the outer periphery of the main body. The woven fabric wound around the drum and going from the inlet side guide roll to the outlet side guide roll is sandwiched between the needle roll driven by the rotation of the drum and pierced by the needle of the needle roll.
[0003]
Such an apparatus is effective not only for woven fabrics but also for improving the properties of general fibrous sheets such as non-woven fabrics, felts, paper, and synthetic leather.
[0004]
For example, synthetic paper is often used as a material for lining sheets of paper diapers, filters for ventilation fans and air purifiers, paper packs for paper pack cleaners, and the like. This synthetic paper is made by fusing short fibers of synthetic fiber with a hot roll of a paper machine, and it feels stiff and does not feel very soft. When pricked with an apparatus, it is supple and soft to the touch, and has excellent breathability, water absorption, filtration performance, and the like.
[0005]
[Problems to be solved by the invention]
Synthetic paper and the like have a high demand for double-sided processing because pricking both sides increases the flexibility of single-sided processing.
[0006]
However, the above-described needle punching apparatus proposed by the present applicant has only a single-sided processing function, and the single-sided processing is repeated twice in response to a request for double-sided processing, so that a problem remains in productivity.
[0007]
In addition, this apparatus needs to adjust the stroke of the needle roll for each roll in order to cope with the change in the thickness of the processed sheet, which takes time and labor for setting.
[0008]
In addition, the punching needle has no fiber-raising action and the raising effect is small. When the fiber sheet is fluffed, the texture becomes softer and the texture is different. In addition, when dusting the surface of paper such as paper dusters and filters, the dust trapping property is improved. However, a needle having a small raising effect cannot sufficiently fluff the surface.
[0009]
Therefore, the first object of the present invention is to enable continuous double-sided prick processing of a fibrous sheet.
[0010]
A second problem is to make it easy to adjust the stroke of the needle roll of the pliers.
[0011]
Furthermore, a third problem is to make the raising effect of the pliers sufficiently high as necessary.
[0012]
[Means for Solving the Problems]
In order to solve the first problem, in the present invention, a rotating drum in which a soft tip protecting soft sheet is wound around the outer peripheral surface and a continuously supplied work sheet are guided onto the outer peripheral surface of the rotating drum. Inlet-side guide rolls, outlet-side guide rolls that guide the processed sheet on the outer peripheral surface of the rotating drum to the outlet, and a plurality of needles arranged on the outer periphery of the drum in parallel with the rotating drum are planted on the outer periphery. A needle roll, and a needle of a needle roll that is sandwiched between a needle roll driven by the drum rotation and a work sheet wound around the outer peripheral surface of the rotary drum between the inlet side guide roll and the outlet side guide roll A plurality of needle prickers arranged in a row are arranged in a column. In addition, a first path for guiding the processed sheet to the inlets of some of the pliers and a second path for guiding the processed sheets to the outlets of the remaining pliers are provided. Then, some of the pliers rotate the rotating drum forward and feed the processed sheet introduced from the inlet from the outlet, and the remaining pliers reversely rotate the rotating drum and send the processed sheet introduced from the outlet from the inlet for processing. Do.
[0013]
In addition, the pliers that rotate the rotating drum in the forward direction and the pliers that rotate in the reverse direction may be alternately arranged. However, when the total number of the pliers is 3 or more, the drums are arranged in the same direction to simplify the sheet transfer path. It is recommended to place a pricker with the drum rotating in the opposite direction behind the rotating pricker group.
[0014]
Next, needle rolls that have a stroke adjustment mechanism to cope with changes in the thickness of the sheet to be processed are desired, but those that adjust the stroke for each roll are troublesome and adjustment for each roll. An error may occur in the value, which is not preferable.
[0015]
Therefore, in the present invention, as a solution to the second problem, a screw jack that supports the needle roll with a slider and pushes it toward the rotating drum with the cylinder is provided with a screw jack that faces the cylinder with the slider in between. In addition, a motor whose rotational speed is controlled by the control device according to the set stroke and a power transmission means for equally transmitting the rotation of the motor to each screw jack are provided, and all the screw jacks are driven by one motor, thereby positioning. The slider was received by the screw shaft of the jack to be used.
[0016]
Furthermore, in order to solve the third problem, a minute barb is attached to the outer peripheral portion of the tip of the pliers needle that pierces the processed sheet.
[0017]
[Action]
Now, assuming that the total number of needle prickers is two, the work sheet is introduced from the entrance to the first pricker, and the drum that reverses the sheet from the first pricker is reversed. When the sheet is guided to the outlet of the first pliers and directed from the outlet to the inlet, one surface of the sheet is processed by the first pliers, and the other surface of the sheet is processed by the second pliers, and continuous prick processing on both sides is performed.
[0018]
In addition, the present invention with an improved needle roll stroke adjustment mechanism, when a stroke to be set is input, the motor rotation speed for moving the screw shaft of the jack back and forth to a specified position is calculated, and the motor commanded rotation speed Rotate until all screw jacks move together and move the same amount. Thereby, the stroke adjustment of a plurality of needle rolls is completed at once, and an adjustment error is also avoided.
[0019]
In addition, when a needle with a barb on the outer periphery of the tip is used, when the needle stuck in the sheet is pulled out, fibers in the sheet are caught on the barb and scraped to the surface of the sheet, and when a needle without a barb is used Compared to the brushed effect.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a prick processing apparatus according to the present invention. The sheet 1 to be processed is set on the roll-rolled original fabric on the supply device 2 and then unwound from the roll, and is guided to the needle pricker 5 (the added numbers indicate the order of alignment). 3 is a feed roll for rewinding, and 4 is a dancer roller that absorbs the slack of the sheet 1.
[0021]
Here, the needle pricker 5 has an even number (four in the figure) to prevent a difference in the processing effect on both sides, and processes one side of the sheet (5 ₋₁ , 5 ₋₂ ) and others. Although the surfaces to be machined (5 ₋₃ , 5 ₋₄ ) are divided in half and arranged in columns, there is no particular upper limit on the total number of the prickers 5, and an odd number may be used.
[0022]
Further, in the apparatus of FIG exits from the entrance of the work sheet 1 is guided from the outlet of Purikka 5 _-2 outlet of Purikka 5 _-4, its Purikka _5-3 further finish machining Purikka _5-3 A guide roller group 6 for guiding the going sheet 1 to the winding side is provided. The path of the chain line in the figure passing through the guide roller group 6 is the second path, and the path of the solid line in the figure from the inlet to the outlet of the next pricker in order is the first path for effective use of equipment. In addition, the first route and the second route can be selectively used for the preckers 5 _-3 and 5 _-4 .
[0023]
In the apparatus shown in the figure, the processed sheet 1 is sent to the winding device 9 via the feed roll 7 and dancer roller 8 and rolled again here, but other processing is performed following the prick processing. When performing, a device for performing other processing is incorporated between the feed roll 7 and the winding device 9.
[0024]
2 to 4 show details of the needle pricker 5. This needle pricker 5 has a horizontally arranged large-diameter rotating drum 10 in which a needle tip protection sheet 11 (see FIG. 4A) is wound around the outer periphery. The sheet 11 is felt here, but may be replaced with a rubber sheet. The rotating drum 10 has a rotation driving means (not shown), and the speed is controlled so that the traveling speed of the processed sheet 1 is substantially equal to the feeding speed by the feed rolls 3 and 7 in FIG.
[0025]
An inlet side guide roll 12 and an outlet side guide roll 13 are provided on the outer periphery of the rotary drum 10. The processed sheet 1, for Purikka _5-1 by the inlet side guide roller 12 is guided to the outer periphery of the drum 10, reaches the outlet side guide roller 13 is wound approximately one circumference near the drum periphery from this position, in Figure 1 It is guided to the inlet of Purikka _5-2 via the guide roll 14. The same applies to Prikka 5 _-2 .
[0026]
Further, the single-sided machining, Purikka _5-3 of FIG. 1, 5 _-4 is also to direct the outlet by introducing the sheet 1 from the inlet Similarly, the double-sided machining the outlet of Purikka _5-2 Purikka 5 _-4 outlet Then, the sheet 1 is guided, and the rotating drums 10 of the pliers 5 _-3 and 5 _-4 are reversed to reach the outlet of the pliers 5 _-4 → the inlet and the outlet of the pliers 5 _-3 → the inlet. And directing the sheet 1 processed is completed to the winding portion from the inlet of Purikka _5-3.
[0027]
Reference numeral 15 in FIGS. 1 and 2 denotes a needle roll which is arranged in parallel with the drum 10 on the outer periphery of the rotating drum 10 and is provided for each of the pliers. Innumerable needles 16 are implanted in the needle roll 15 as shown in FIG. The needles 16 may be distributed on the roll surface as a whole as shown in FIG. 4 (a) or locally as shown in FIG. 4 (b). Also, there are cases where it is possible to replace the needle by detachably planting on the roll 15, and there are cases where the roll is replaced on an as-needed basis when it is planted non-detachably on the roll.
[0028]
The needle roll 15 is a driven roll having no drive source. When the drum 10 is rotated, the sheet 1 to be processed moves, and the needle roll 15 that has pierced the needle 16 into the sheet 1 rotates around.
[0029]
The illustrated precker 5 is provided with a needle roll stroke adjusting mechanism 17 shown in FIG. As shown in FIG. 3, the stroke adjusting mechanism 17 supports a slider 17a by a slide guide 17c attached to a support frame 18 so as to be movable in the radial direction of the drum 10, and a needle roll by a bearing 17b attached to each slider 17a. 15 is supported individually. Further, a cylinder 17d that pushes the slider 17a toward the center of the drum 10 and a screw jack 17e are attached to both ends of the slide guide 17c, and each screw jack 17e is attached to the power transmission means 17f shown in FIG. And a sprocket wheel), and is driven by a single motor 17g.
[0030]
The motor 17g is a geared motor, and rotates until it receives a command from a control device (not shown) and reaches the command rotational speed. When the target stroke is input, the control device calculates the motor rotational speed necessary to move the screw shaft 17h of the jack to the set position and controls the rotation of the motor 17g.
[0031]
By adjusting the stroke by the stroke adjusting mechanism 17, the screw shaft 17h of the jack advances and retreats, and the slider 17a is received by the displaced screw shaft 17h, and the piercing depth of the needle 16 with respect to the sheet 1 is adjusted. As a result, it is only necessary to input a stroke to be set in response to the thickness change of the sheet 1, and the adjustment work is simplified.
[0032]
FIG. 5 is an apparatus in which the entrance / exit of the processed sheet 1 is provided on the upper side of the rotary drum 10, and even with this configuration, processing similar to that of the apparatus of FIG. 1 can be performed.
[0033]
FIG. 6 is an embodiment of the needle 16 to be planted in the needle roll 15. The needle 16 shown in the drawing is formed by integrally processing a large number of elongated attachment portions 16a. The needle 16 is provided with a cutting edge 16b having a very small width (W = less than 0.1 mm) at the tip so as to obtain a cutting effect. Further, a minute barb 16c is attached to the outer periphery near the tip so that the fiber scraping effect by the barb 16c can be obtained. When this needle 16 is used, the surface of the processed sheet 1 becomes fluffy and has a soft texture.
[0034]
【The invention's effect】
As described above, the prick processing apparatus according to the present invention processes one side of a sheet with a needle pricker in which a rotating drum rotates in the forward direction, and then processes the other side of the sheet with a subsequent pricker in which the rotating drum reverses. The efficiency of double-sided processing can be improved.
[0035]
In addition, the needle roll stroke adjustment mechanism includes screw jacks, and each screw jack can be linked so that the needle roll can be positioned at a set point with a single motor. This makes it easy to cope with changes in the thickness of the processed sheet.
[0036]
Furthermore, when a needle provided with barbs on the outer periphery of the tip is used, the raising effect is increased by scraping the fibers with the barbs, and the processed sheet is excellent in texture and texture.
[0037]
In addition, the apparatus of this invention can be utilized suitably for the property adjustment process of not only synthetic paper but general fiber sheets.
[Brief description of the drawings]
FIG. 1 is a view showing an embodiment of a prick processing apparatus according to the present invention. FIG. 2 is an end view showing details of a needle pricker. FIG. 3 is an enlarged view showing a part of a stroke adjusting mechanism. a) End view showing details of rotating drum and needle roll (b) End view of needle roll with different needle implantation patterns FIG. 5 shows another embodiment of a prick processing apparatus. Front view showing embodiment of needle (b) Side view similarly [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Work sheet 2 Supply apparatus 3, 7 Feed roll 4, 8 Dancer roller 5 Needle precker 6 Guide roller group 9 Winding apparatus 10 Rotating drum 11 Needle tip protection sheet 12 Inlet side guide roll 13 Outlet side guide roll 14 Guide roll 15 Needle roll 16 Needle 16c Barb 17 Stroke adjustment mechanism 17a Slider 17d Cylinder 17e Screw jack 17f Power transmission means 17g Motor 17h Screw shaft 18 Support frame

Claims (3)

A rotating drum in which a soft sheet for protecting the needle tip is wound around the outer peripheral surface, an inlet side guide roll for guiding the continuously supplied processed sheet onto the outer peripheral surface of the rotating drum, and a processed sheet on the outer peripheral surface of the rotating drum A plurality of needle rolls arranged in parallel with the rotating drum and arranged on the outer periphery of the drum, and an infinite number of needles planted on the outer periphery. A plurality of needle pliers arranged in tandem with a workpiece roll wound around the outer peripheral surface of the rotating drum between the rolls and sandwiched between the needle roll driven by the drum rotation and pierced by the needle roll needle A first path for guiding the work sheet to the inlets of some of the pliers, and a second path for guiding the processed sheets to the outlets of the remaining pliers, wherein the part of the pliers is a rotating drum. A fiber sheet prick processing device that feeds a work sheet that has been normally rotated and fed from the inlet from the outlet, and the remaining pliers feed the work sheet introduced from the outlet by reversing the rotating drum. The needle to be planted in the needle roll has a barb on its side, and when the needle pierces the work sheet and the needle stuck in the sheet comes out, the fiber in the sheet is scraped out. . The needle pricker employed in the prick processing device according to claim 1 , wherein the needle to be planted in the needle roll has a barb on its side, and the needle pierces the work sheet and the needle stuck in the sheet comes out. The needle precker is characterized in that the fibers in the sheet are scraped off .   A slider that individually supports each of the needle rolls, a cylinder that pushes each slider toward the center of the rotating drum, a screw jack that receives the slider with a screw shaft after positioning against each cylinder, and a set stroke 3. A needle roll stroke adjusting mechanism according to claim 2, further comprising: a needle roll stroke adjusting mechanism comprising a motor whose rotational speed is controlled and a power transmission means for equally transmitting the rotation of one motor to each screw jack. Rikka.

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