JPH0144521Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a spreading machine.

A spreading machine is a machine for stacking a large number of sheets on a table in order to cut a large number of sheets at the same time, as shown in FIG. 1.

That is, in this figure, 1 is a table, and rails 2, 2' are provided on both sides of the table along the length direction. Reference numeral 3 denotes a main body of the device, and running wheels 4 are provided at both ends of the device to engage with the rails 2, 2' and run, and the wheels 4 are set as appropriate via a drive motor and a drive mechanism (not shown) in the main body of the device. The vehicle automatically travels back and forth over a certain distance. Reference numeral 5 denotes a cutting device installed at the front of the main body 3, and 6 and 6' denote a web support frame installed at the upper surface of the main body 3, which allows the web 7 to be freely rotated in the width direction. I will support you. Reference numeral 8 denotes a catcher disposed at a certain distance above the table, and when the main body 3 of the apparatus reciprocates, the starting end m of the web 7 is moved to a certain position on the table 1 by swinging its presser lever 8a. This is done so that it stays in place. Thus, the machine is operated by operating a control panel 9 built into one side of the machine body. In addition, in the figure, 10 is a presser roller, 11
is the delivery roller.

The spreader with the above configuration reciprocates on the table over a fixed distance instructed by the control panel 9, and at the same time, the starting end of the web 7 supported by the web support frames 6, 6' is touched at the leading end of the forward motion. By repeating the operation of fixing the fabric with the catcher 8 and activating the cutter 5a of the cutting device 5 to cut the fabric at the end of the retraction, the fabrics of the same size are piled up on the table 1. be.

By the way, in the work of unwinding a raw fabric in such a fabric spreading machine, the raw fabric is not necessarily wound evenly around the raw fabric shaft, and due to other reasons, the fabric is unrolled uniformly. Because it doesn't become a thing,
In the case of patterned items, there is a problem in that the pattern may be misaligned or tilted, resulting in defective products when molded and cut.
Furthermore, even if the fabric is not patterned, especially thin synthetic fiber fabrics that have recently become popular, there is a serious problem in that the fabric itself easily becomes oblique during unwinding.

The present invention is an attempt to solve the above-mentioned problems, and is designed to ensure that the raw fabric is fed out uniformly and correctly from beginning to end during the fabric spreading process.
An example of implementing the present invention will be described based on the accompanying drawings.

FIG. 2 shows an improved example of a commercially available spreading machine, in which A is a side view, B is a plan view, and FIG. 3 is a partially detailed perspective view of the needle wheel.

As seen in this drawing, the bracket plates 12 and 1 are arranged so as to protrude from both edges of the rear side of the device main body 3.
2', and a notch 13,
13' is bored, and the original fabric 7 on the main body of the apparatus is retracted to this position and pivoted so as to be rotatable. 1
Reference numerals 4 and 14' refer to needle wheels arranged at both end positions on the main body of the apparatus, and in order to appropriately correspond to the width l of the web 7, needle wheels 4 and 14' are arranged near positions corresponding to the width l of the web 7. A base 16 with slit grooves 15, 15' is installed on the base 16, and a base plate 1 is attached to the base 16.
7 and 17' are provided between the slit groove 15 through flanged bolts 18a and nuts 18b, respectively, so as to be slidable and fixed at arbitrary positions within the grooves.

Numerals 19 and 19' are daughter plates that are rotatably disposed on the parent plates 17 and 17' in a fixed angular range, and 20 and 20' are pivot shafts thereof. Here, arc-shaped slits 21 and 21' are bored inwardly with the pivot shafts 20 and 20' as fulcrums, and support bolts fixed to the main plates 17 and 17', respectively, are bored. 22, 22' are provided so as to protrude upward, and are fixed at any position during the rotation process via wing nuts 23, 23'. Reference numerals 24 and 24' are bearing plates that are erected at outer positions opposite to the respective fulcrums, and each of the needle wheels 14 and 14' is rotatably supported at a constant height position. Each needle wheel 14, 14' is a thin disk-shaped thing made of lightweight aluminum or the like, and needles P are planted in a row on the outer periphery of the rim at a pitch of about 7 mm. .

Thus, the edge of the raw fabric 7 placed at the rear is hooked on the needle wheels 14, 14' and pulled out to the front. In the meantime, the following various means are provided.

That is, 25 is an unraveling roller which is rotatably supported on the bracket plates 12, 12', and also has a rotating shaft of a motor 26 with a speed reducer fixed to one end of the bracket plate (12' in the illustrated example). It is connected with. Reference numerals 27a and 27b are guide plates which are arranged in an inverted eight shape to straddle the unraveling roller 25 and the needle wheels 14, 14'. Needle wheel 1
4, 14' is formed to have a constant slack length f. This time 28
Numerals a and 28b are phototube detection means for rotating in conjunction with the unraveling roller 25 so that the slack length f is constant.

29 and 30 are freely rotating guide rollers provided in front of the needle wheels 14, 14', and 31 is a presser roller, each of which applies a certain tension to the original fabric until it reaches the feed roller. It is intended to be granted.

In addition, although not shown, the feed roller 1
1 rotates within the main body 3 of the device in conjunction with the rotation of the running wheels 4.

When using this device, the needle wheels 14, 14' are placed on the main plates 17, 1 so that they are approximately at the same position as the edge of the original fabric.
7' and daughter plates 19, 19', and set the dice plates 19, 19' so that the side facing the feed roller 11 of the needle wheels 14, 14' is slightly widened at the end so that the fabric can be stretched. It is eggplant.

This connects the wing nuts 23, 23' with the loosener plate 19,
19' on the main plates 17, 17' both at a constant angle θ
It is set by rotating it. (See Figure 2B) By doing the above, the present invention allows the original fabric to be fed out to the feeding roller 11 with the correct width, that is, when unraveling, both ends of the fabric are aligned with the width. Even if the fabric is twisted or distorted, this discrepancy is adjusted by the difference in rotational speed of the needle wheels 14 and 14', which can rotate independently of each other, so that from a microscopic perspective, the same weft thread of the fabric Since several pieces are fed out from the needle wheels 14, 14' at the same time, the oblique distortion of the fabric is automatically corrected by passing through the needle wheels 14, 14'.

In the above embodiment, an attachment member such as a bracket plate is attached to the conventional device, and the attachment member is attached thereto. FIG.
The overall configuration of the device can be made compact.

The present invention is thus capable of automatically and smoothly correcting the deviation of the fabric grain during spreading, and is extremely effective for patterned fabrics and especially thin fabrics. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional fabric spreading machine, Fig. 2 is a fabric spreading machine according to the present invention, where A is a side view, B is a plan view, and Fig. 3 is a partially detailed view of the needle wheel. , FIG. 4 is a side view of another example. 1... Table, 2, 2... Rail, 3... Device body, 4... Wheels, 5... Cutting device,
7... Original fabric, 8... Catcher, 9... Control panel, 10... Presser roller, 11... Feeding roller, 14, 14'... Needle wheel, 15, 15'... Slit groove, 17, 17 '...Main board, 19,19'...
...Slave plate, 21, 21'...Slit, 24, 2
4'...Bearing plate, 25...Reeling roller, 27,
27'...Guide plate, 28a, 28b...Phototube detection means.

Claims (1)

[Scope of utility model registration request] At an intermediate position on the main body of the device, which is equipped with a web support shaft and a feed roller, corresponds to the vicinity of both ears of the web,
In addition, a pair of needle wheels 14 and 14' are arranged so as to be able to freely rotate independently, and are arranged near a position corresponding to the width l of the original fabric in order to correspond appropriately to the width l of the original fabric. Base 16 with slit grooves 15, 15'
At the same time, the main plate 17,
17' is made to be able to slide freely between the slit grooves 15, 15' through bolts and nuts, respectively, and to be fixed at any position within the grooves, and also to be fixed at any position within the grooves. The child plates 19, 19' are provided so as to be rotatable within a certain angular range, and the rotation support shafts 20, 2
Arc-shaped slits 21, 2 at the inner position of 0'
1', and the support bolts 22, 22' fixed to the parent plate are inserted so as to be fixed at any position during the rotation process via nuts, and the rotation support shafts 20, 20' A bearing plate 24 erected at an outer position of
Needle wheels 14 and 14' are each rotatably supported at a fixed height position of 24', and the edge edge of the raw fabric up to the feed roller is formed in a semicircle by passing over the needle wheel. Allow it to pass while being hooked around the circumference, while a V is placed between the web support shaft and the needle wheel.
A letter-shaped guide plate is provided, and phototube detection means are arranged opposite to each other at the bottom position of the guide plate, and unraveling rollers for unwinding the fabric are arranged between the guide plate and the fabric support shaft. A spreading machine characterized in that the unwrapping roller is configured to constantly slacken the raw fabric along the guide plate, and to operate a phototube detection means so that the slack length is always constant. .