JP4179828B2 - Deployment method for fabric products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is provided with a pair of clamps for holding the front end of the cloth product in the processing unit in order to load the cloth product such as a sheet into a processing apparatus such as a folding machine, and is held by the pair of clamps. The present invention relates to a method in which the center portion of the cloth product is aligned with the center of the input portion to make it unfolded.
[0002]
[Prior art]
In a service in which cloth products collected from customers are washed, dried, ironed and folded before shipping, various sizes of cloth products are handled. Conventionally, when such a cloth product is put into a processing apparatus, if the cloth product is held by two clamps, it moves to a centering position with a preset width (initial widening width), and then spreads outward from the center. It stops when it is sensed (see, for example, JP-A-2002-113294).
[0003]
However, when deploying a cloth product with a width smaller than the preset width, a force is exerted to expand the cloth product so that it is larger than the actual width of the cloth product, so that the cloth product may be damaged or the clamp may be damaged. This will cause problems. Conversely, if the initial spread width is set in accordance with the minimum width of the fabric product, it takes time until the fabric product exceeding the size is expanded, resulting in a problem that the number of processed sheets decreases.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to the above-mentioned points, and the problem is that when a cloth product having different sizes can be developed in accordance with the size of each cloth product, It is to prevent problems such as breakage of the clamp and failure of the clamp. Another object of the present invention is to shorten the time required for the unfolding operation by reducing the clamp movement distance and to reduce the mechanical burden and improve the durability.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention arranges the first and second pair of clamps so as to be movable in the left-right direction toward one of the left and right sides of the input portion for the development of the cloth product. The fabric product is held at the tip by a pair of clamps, and the position where the fabric product is held is the origin,
A sensor that gradually expands the fabric product by moving the first clamp closer to the center of the feeding portion toward the center, and in the process , confirms the deployment state of the fabric product with a part of the fabric product that has been strained by the deployment. The sensor light is either blocked or the detector moved by the deployed fabric product is switched ,
The position from the origin of the first clamp and the origin of the first clamp and the second clamp at the time of detection by the sensor or detector, which are given based on the signal of the sensor or detector to detect the unfolded state of the fabric product. From the distance, calculate the length in the left-right direction of the fabric product,
Move the first clamp beyond the center of the input part by a distance corresponding to one-half of the left and right length of the cloth product, and move the cloth product and the second clamp accordingly. A measure is taken to match the center of the input section.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The cloth product unfolding method according to the present invention is a method for unfolding a cloth product such as a sheet to be put into a processing apparatus such as a folding machine. The processing apparatus includes a pair of clamps that hold the front end portion of the cloth product at the input portion to the processing apparatus, and the center portion of the cloth product held by the pair of clamps is the center of the input portion. The following configuration is adopted in order to match with
[0007]
First, the pair of clamps are arranged close to either the left or right side of the input portion. The configuration of the pair of clamps is referred to as a first clamp and a second clamp for convenience. The first and second pair of clamps are arranged so as to be movable in the left-right direction, and the cloth product can be developed along with the movement. In a state in which the tip portion is held by these clamps, the fabric product is placed in a state of hanging down on either the left or right side of the feeding portion (FIGS. 1A, 2A, 3). a)).
[0008]
The pair of clamps can obtain the width of the cloth product by calculating the position from the origin when the cloth product is held in the left-right direction from the position where the cloth product is held. . The distance between the origins of the pair of clamps is known in advance and is preferably constant.
[0009]
If the inner one close to the center of the feeding portion is called a first clamp and the outer one is called a second clamp, the cloth product expansion work is started by moving the first clamp toward the center. . In the course of the expansion or as a result of the expansion, the development state of the fabric product is detected by a sensor in accordance with changes occurring in the fabric product. For example, the development can be detected by blocking the sensor light at a part of the fabric product that is tense by the development or switching the sensor switch.
[0010]
Based on the detection signal of the sensor, the position of the first clamp at that time is calculated. The detection signal of the sensor may directly indicate the position of the first clamp at that time (FIGS. 1 and 3), or may be provided as data for calculation (FIG. 2). In any case, if the position of the first clamp at the time of detection of the sensor is known, the interval at the origin of the first and second clamps is known, so the width of the cloth product can be easily determined.
[0011]
A half of the length is calculated from the input width of the fabric product, that is, the length in the left-right direction, and this is applied to the centering of the fabric product. That is, if the first clamp is moved beyond the center of the input portion by a distance corresponding to one half of the length in the left-right direction of the fabric product, and the movement of the first clamp is stopped at the point moved by the corresponding distance, the fabric product is obtained. The center portion of the can be aligned with the center of the input portion. The cloth product is expanded along with the movement of the first clamp at that time, and the second clamp is further entrained.
[0012]
When the fabric product is relatively small, the second clamp also moves with the development of the fabric product. However, when the fabric product is large, the amount of movement of the second clamp also decreases. Accordingly, the first clamp moves from the origin through the unfolded state detection position by the sensor and moves beyond the feeding portion, and the second clamp moves so as to be pulled through the cloth product by the first clamp. There is no extra movement, and the amount of each movement is also the minimum.
[0013]
【Example】
Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 assumes a state in which the fabric product 11 is introduced into the input unit to the processing apparatus, and the first and second pairs of the first and second pairs are set with the point near the front left of the input unit as the origin. The clamps 12 and 13 are arranged so as to be movable in the left-right direction. The first and second pair of clamps 12 and 13 are provided so as to be movable in the left-right direction along a rail (not shown). Moreover, in order to confirm the expansion | deployment state of the fabric product 11, the sensor 14 is installed in the position covered with the fabric product 11 which became the deployment state between the clamp initial position and the input part center.
[0014]
FIG. 1 (b) shows a state in which the fabric product 11 hangs down with its tip end attached to the first and second clamps 12 and 13 at the initial position in the previous step. 12 is moved toward the center of the feeding portion, and the fabric product 11 is gradually expanded (FIG. 1 (c)). When the fabric product 11 is further expanded, it is detected that the sensor 14 is covered by the tip portion of the fabric product 11 and is in a developed state (FIG. 1D).
[0015]
At the same time, the width of the fabric product 11 is calculated from the movement amount of the first clamp 12 and the dimension between the first and second clamps 12 and 13, and the first clamp 12 further moves to the right (FIG. 1 (e )), Moved to the right from the center of the throwing portion for a distance corresponding to one half of the length in the left-right direction of the fabric product 11, and stopped (FIG. 1 (f)). Thus, the fabric product 11 is transported to the left and right positions with reference to the center of the feeding portion, and is sent out on the conveyor of the processing apparatus in the next process in a state close to the original shape (FIG. 1 (g)).
[0016]
FIG. 2 shows a sensor 15 that is moved by a cloth product to be deployed as a sensor between the initial position of the clamp and the center of the input portion and at a position to be moved by the cloth product 11 that has been deployed. . The detector 15 is pivotally supported by a fulcrum 16 so as to protrude forward from the processing apparatus side, and when it is flipped up, it is switched and a switch is turned on to generate a signal. Since the first and second clamps 12 and 13 and the like may be the same as those in the embodiment of FIG. 1, reference numerals are used and detailed description thereof is omitted.
[0017]
In the case of this example, when the fabric product is attached to the pair of clamps 12 and 13 in the initial position, the detector 15 is arranged in a valley formed by drooping (FIG. 2 (b)), and from there 1 When the clamp 12 is moved toward the center of the feeding portion (FIG. 2 (c)) and the fabric product 11 is expanded (FIG. 2 (d)), the fabric product 11 is unfolded when the tip of the fabric product 11 hits the detector 15. It is grasped as a state (FIG. 2 (d)). In this state, the portion defined by the first clamp 12, the second clamp 13, and the detector 15 is a right triangle, and the movement distance (X) of the first clamp 12 and the distance between the clamps at the initial position (X ′) And the distance (Y) between the second clamp 13 and the detector 15 are known, the length of the hypotenuse (N) is calculated from the Pythagorean theorem to obtain the full width (N + Y).
[0018]
Thereafter, the first clamp 12 moved to the right beyond the center (FIG. 2 (e)) and moved from the center of the input portion by a distance corresponding to one half (N + Y) / 2 of the length in the left-right direction. It stops at the point (FIG. 2 (f)). Thus, the cloth product is conveyed to the left and right positions with reference to the center of the input portion, and is sent out on the conveyor of the processing apparatus in the next process in a state close to the original shape.
[0019]
FIG. 3 shows that the first sensor 17 and the second sensor 18 are used in combination as sensors, and the first sensor 17 is arranged on the center line of the input portion as a spread completion sensor and at a position corresponding to the developed cloth product tip. . The second sensor 18 detects the travel of the second clamp 13 and is disposed between the initial position of the pair of clamps 12 and 13 and the center of the feeding portion and slightly lower than the front end of the fabric product.
[0020]
In the case of this example, the fabric product 11 is attached to the pair of clamps 12 and 13 at the initial position so as to hang down (FIG. 3B), and from this state, the first clamp 12 moves toward the center and the fabric product leading end portion. Is gradually expanded (FIG. 3 (c)), and when the front end of the fabric product is expanded to some extent and the second sensor detects it, the second clamp 13 is moved to the right side even if it is not fully expanded. Move toward the center of the charging unit (FIG. 3D).
[0021]
At the time when the cloth sensor tip is detected by the second sensor 18, the length in the left-right direction of the cloth product is calculated from the positions of the first clamp 12 and the second clamp 13 as in the embodiment shown in FIG. The second clamp 13 starts to move so that the half of the position coincides with the center of the feeding portion as the center portion of the fabric product (FIG. 3E), and centering is performed (FIG. 3F). ). In other words, the pair of clamps 12 and 13 are centered without being completely deployed, and then both clamps 12 and 13 are moved outward to complete deployment, and stop when the first sensor 17 detects them (see FIG. 3 (g)).
[0022]
The advantage of this method is that the centering can be performed without applying unnecessary tension to the fabric product, so that the external force applied to the fabric product is minimized, and the reaction force is also reduced, so the burden on the clamp is small. In addition, since the cloth product 11 is moved halfway open to the center of the input portion and then fully opened, it is slowly applied to the sensors 17 and 18 as compared with the previous two examples, and the cloth product 11 does not dance and the sensor performance. Is exerted without difficulty, and it is expected that the linearity at the tip of the fabric product becomes better and the product quality is improved.
[0023]
【The invention's effect】
Since the present invention is configured and operates as described above, when putting fabric products of different sizes in various sizes, it is possible to perform centering while detecting the size of each fabric product to set the fabric products in the expanded state. Since it is possible to reduce the external force applied to the fabric product before deployment and minimize the movement distance, the fabric product is protected from breakage, and it is not necessary to apply unnecessary external force to the clamp. There is an effect that the work can be proceeded more smoothly and quickly than in the past without waste.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory diagram showing steps (a) to (g) of a first embodiment of a fabric product developing method according to the present invention.
FIG. 2 is an explanatory view showing Example 2 following steps (a) to (f).
FIG. 3 is an explanatory view showing Example 3 by following steps (a) to (g).
[Explanation of symbols]
11 Fabric products 12, 13 A pair of clamps 14, 15, 17, 18 Sensors

Claims (1)

In order to load a cloth product such as a sheet into a processing apparatus such as a folding machine, a pair of clamps that hold the tip of the cloth product are provided in the input portion of the processing apparatus, and the cloth is held by the pair of clamps. It is a method of deploying with the center part of the product aligned with the center of the input part,
Position where the first and second pair of clamps are arranged so as to be movable in the left-right direction toward the left or right side of the input part, and the cloth product is held by the pair of clamps at the tip, and the cloth product is held. Is the origin,
A sensor that gradually expands the fabric product by moving the first clamp closer to the center of the feeding portion toward the center, and in the process, confirms the deployment state of the fabric product with a part of the fabric product that has been strained by the deployment. The sensor light is either blocked or the detector moved by the deployed fabric product is switched ,
The position from the origin of the first clamp and the origin of the first clamp and the second clamp at the time of detection by the sensor or detector, which are given based on the signal of the sensor or detector to detect the unfolded state of the fabric product. The length of the cloth product is calculated from the interval, and the first clamp is moved beyond the center of the input portion by a distance corresponding to one half of the length of the cloth product in the left-right direction, and the cloth product is accordingly accompanied. And the 2nd clamp is moved, The center part of the cloth product was made to correspond with the center of the input part, The deployment method of the cloth product characterized by the above-mentioned.

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