JPH05111598A - Linen spreading device - Google Patents

Abstract

PURPOSE:To shorten the time for spreading a linen by arranging a pair of gripping tools grasping the two ends of the linen on respective rails so that the linen can previously be spread to the min. width when the linen is going to be spread. CONSTITUTION:A pair of gripping tolls 40 grasping the two ends of a linen are fed to slide rails 16a, 16b from free rails 14a, 14b. The spacings of the free rails and slide rails are adjusted to the min. width of the linen to be handled. After the slide rails 16a, 16b are spread to the left and right by a motor 23, the gripping tools 40 are advanced by a motor 25 on the slide rails and release the linen through the action of a roller cam. The released linen is sent to an ironer 38 by a conveyor 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linen spreading device for rectangular cloth such as sheets applied to a spreader feeder of a laundry machine.

[0002]

2. Description of the Related Art There are various kinds of devices for developing linen one by one in a conventional laundry factory to polish or dry the linen with a roll ironer. There is also a spreader feeder in which a chucking device is integrally incorporated. Here, as an example of such a device, a worker who unfolds sheets after washing and dewatering at a location away from the roll ironer, causes adjacent ends to be gripped by two chucks and fed to a spreader feeder. The device (Japanese Patent Publication No. 58-22240) will be described with reference to FIG.

In FIG. 7, reference numeral 1 is a linen as a representative of linen, which is washed and dehydrated, then unfolded and unfolded by an operator, and two adjacent ends are gripped and conveyed by a chuck 2. Numeral 10 is a spreader feeder, which spreads the chuck 2 sandwiching the two ends of the sheet 1 sent from the rail 11 to the left and right, opens the chuck 2 with the sheet 1 spread, and rolls only the seal 1 on the belt conveyor. This is an automatic bed sheet transporting device that is designed to be transported to Lonner.
The chuck 2 after the sheet 1 is released is automatically collected in the present apparatus and discharged to the collection rail 12.

[0004]

However, in the above-mentioned conventional linen developing device, the two ends of the linen are gripped.
Since the pair of gripping tools are provided on one rail and move left and right from the close state to the full width of the linen to deploy the linen, high-speed processing of the linen is difficult.
If the vehicle is operated at high speed, there is a possibility that the durability of the machine may be deteriorated or the linen may be unfolded.

Therefore, according to the present invention, in the linen supply section, a pair of gripping tools holding the two ends of the linen are separately fed to two sets of transfer rails, and the latter half of the rails are made into inclined free rails. The mechanism that feeds the gripping tools from the free rail to the slide rail at the same time, the mechanism that widens the gap to the left and right in the direction of linen development while the slide rail is parallel, and the gripping tool on the slide rail regardless of the position. With a gripper drive mechanism that can move the gripper in the traveling direction, a cam that operates to release the linen from the gripper during the progress of the gripper, and a conveyor that receives the linen released from the gripper and sends it to the ironer. The present invention aims to solve the above problems by configuring a high-speed linen developing device.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a linen developing apparatus for spreading linen whose two ends are suspended by a movable gripping tool and feeding the linen onto a belt conveyor, one linen can be used. Two sets of supply free rails for separately transporting a pair of grippers whose ends are gripped, two sets of parallel slide rails into which the grippers are fed simultaneously from the free rails, and the slide rails are parallel to each other. A moving mechanism that moves the linen as it is at right angles to the moving direction of the gripping tool and in opposite directions, and a gripping tool inside the slide rails simultaneously moves in the moving direction while the linen is unfolded. A mechanism for releasing the linen from the gripping tool and supplying the linen to a conveyor provided below is provided as a means for solving the problem.

[0007]

[Function] Several pairs of grippers holding the two ends of the linen are lined up on the slope of the two sets of inclined free rails, and a pair of grips with the same leading linen suspended are slid into two sets at the same time. It is sent to the rail. The distance between the two sets of free rails and the two sets of slide rails is adjusted to the minimum width of the linen to be processed. After the slide rail deploys the linen to the left and right, the gripper advances on the slide rail, and the linen is released from the gripper by the cam attached to the slide rail and placed on the conveyor to be sent to the next step. The slide rail on which an empty gripping tool is placed returns to its original position with a narrower space, is driven and is sent to the return free rail, and at the same time, the gripping tool holding the next linen is sent to the slide rail. Since the distance between the two sets of slide rails is adjusted to the minimum width of the linen to be processed, the movement distance of the slide rails can be small.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 6 show the embodiments of the present invention. FIG. 1 is a perspective view of the entire linen unfolding apparatus, in which two adjacent ends of the linen 1 are separated into two separate lines at a linen suspension station in the previous process.
The linen 1 is sent to the unfolding device while being held by the pair of gripping tools 40 traveling on the pair of supply rails. 14
a and 14b are inclined supply free rails on which the gripping tool 40 can freely travel by gravity.
The gripping tool feeding device 15 is attached to the tip of 14b, and the gripping tool 40 is temporarily stopped in the feeding device 15 and then the slide rails 16a,
It is sent to 16b. The slide rails 16a,
16b is a drive rail. 2 and 3 show a main cross section and a plan view of the linen unfolding device. Moving bodies 17a and 17b are integrally attached to the slide rails 16a and 16b, and a right-hand screw ball is attached to the moving body 17a. For the nut 18a and the moving body 17b, a left-hand screw ball nut 18
Two b are fixed to each other, and the sliding sprockets 19 also serving as ball spline nuts are attached to the moving bodies 17a and 17b.
It is mounted so that it can be rotated individually. Further, the sliding sprocket 19 has a drive chain 20 for driving a gripping tool 40.
Is wrapped around.

A plurality of roller cams 27 are attached to the slide rails 16a and 16b, and the roller cams 27 have a function of releasing linen from the gripping tool 40 onto the belt conveyor 37 as described later. Mobile 1
The ball nuts 18a and 18b of 7a and 17b have two ball screw shafts 21 supported by bearings on the drive side frame 31, the side frame 32, and the central support 36 (right side screw on the drive side from the center, counter drive side from the center). Is a left-hand thread),
By rotating the servo motor 23 and rotating the two ball screw shafts 21 in the same direction by the sprocket 24, the moving bodies 17a and 17b can move in opposite directions. Similarly, the moving body 17a,
The sliding sprocket 19 on 17b includes frames 31, 3
2 and the ball spline 22 supported by the bearing on the central support base 36, and when the servo motor 25 rotates, the sliding sprocket 19 is rotated regardless of the distance between the two moving bodies to grip the slide rails 16a and 16b. The tool 40 can be moved the same distance at the same time. Reference numerals 26a and 26b are return rails for sending out the gripping tool 40 having released the linen 1. A belt (lower) 34a for extending the wrinkles of the linen 1 from the drive side frame 31 and the side frame 32 toward the center,
34b is provided. Further, wrinkle-stretching belts (upper) 35a, 35b are attached to the front frame 33, and a linen sensor 29 is provided at the upper center of the front frame 33.
Is installed. Reference numeral 37 is a belt conveyor for sending out the developed linen 1, and 38 is an ironer.

Next, the structure of the gripping tool 40 will be described with reference to FIGS. 5 and 6. A pin 43 is fixed to the gripping tool main body 41, and a clip 42 is rotatably attached to the pin 43. A return spring 44 is wound around the pin 43. One end of the return spring 44 is fixed to the pin 43 and the other end is stopped by the grip 42, which acts to urge the grip 42 counterclockwise in FIG. It works to grab linen 1 between. Further, two shafts 48 are attached to the gripper main body 41, and four wheels 47 are rotatably attached in pairs on both sides of the coaxial 48 so that they can run on a traveling rail. It is like this. Further, the gripping tool main body 41
A sprocket 41b is provided on the upper part of the gripper 40 and can be forcibly driven by using the drive chain 20, and a lever 45 is rotatably attached to the gripper body 41 by a pin 46. While the vehicle is traveling on the rail, the cam 27 mounted on the rail pushes the lever 45 to rotate the grip 42 in the clockwise direction in FIG. 6 and release the gripped linen 1. You can do it. Drive chain 20
Is guided in the travel rail by rollers 49 mounted on opposite sides of the extended link pin, as shown in FIG.

Next, the operation of the embodiment configured as described above will be described. The gripper 40 and the slide rail 1 are shown in FIG.
The movements of 6a and 16b are indicated by katakana and arrows,
Several pairs of grippers 40 holding the two ends of the linen 1 are lined up, being stopped by the gripper feeding device 15 under the slope of the two sets of the inclined supply free rails 14a and 14b, and the leading linen 1 A pair of grippers 40 (a position in FIG. 4) suspending the same are aligned by the gripper feeding device 15 with the timing of linen development, and simultaneously two sets of slide rails 16a,
16b (in the direction of arrow D in FIG. 4) and engages with the drive chains of the slide rails 16a and 16b and temporarily stops (position a in FIG. 4).
The distance between 4b and the two slide rails 16a and 16b is set to the minimum width of the linen 1 to be processed as indicated by Ls in FIG.

When the servo motor 23 rotates and the two ball screw shafts rotate in the same direction and in the same direction, the slide rail 16
The distances a and 16b are kept parallel to each other, and the linen sensor 29 confirms that the linen 1 has spread sufficiently, and the servo motor 23 is stopped. Linen 1 at that time
Is indicated by Lw (moves in the direction of arrow E in FIG. 4, the gripping tool is in the c position). At this time, the wrinkle stretching belt 34a,
34b and 35a, 35b horizontally rotate so that the lower side and the center of the linen are widened horizontally to smooth the wrinkles of the linen 1. After completing the linen unfolding work, the servo motor 25
Rotates to rotate the ball spline 22, and the sliding sprocket 19 engaged with this rotates to rotate the drive chain 20.
The gripper 40 is driven by the slide rail 16
Forward on a and 16b (direction of arrow F in FIG. 4). While the gripping tool 40 is moving, the linen 1 is held by the roller cam 27 attached to the slide rails 16a and 16b.
It is released from 0 (position D in FIG. 4) and placed on the conveyor 37 which is fed into the ironer 38 which is the next step. Below the conveyor 37 at the position where the linen 1 falls, a suction box 39 passes through the conveyor 37 to evacuate the linen 1 to prevent the linen 1 from slipping off.

The gripping tool 40 which has released the linen 1 is temporarily stopped, and the servo motor 23 is rotated in the reverse direction to cause the slide rail 16 to rotate.
a and 16b return to Ls in FIG. 3 with the original spacing (position o in the direction of arrow G in FIG. 4). The servo motor 25 rotates again to rotate the ball spline 22 to move the gripping tool 40 from the slide rails 16a, 16b to the return free rails 26a, 26.
b (in the direction of arrow H in FIG. 4). At the same time, the gripping tool 40 gripping the next pair of linen 1 is sent to the slide rails 16a and 16b by the gripping tool feeding device 15.

[0014]

As described in detail above, according to the present invention, since the interval between the slide rails has already been widened to the minimum width of the linen at the beginning of the linen development, the linen development width can be reduced and the operation can be improved. Time is reduced. Further, since the pair of gripping tools for gripping one linen run on different rails, a special gripping tool distribution device is not required when transferring from the free rail to the slide rail, and the transfer operation can be performed reliably. It has excellent effects such as.

[Brief description of drawings]

FIG. 1 is a perspective view of a linen spreading device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the linen developing device in FIG.

3 is a plan view of the linen spreading device shown in FIG. 1. FIG.

FIG. 4 is an explanatory diagram of an operation of element parts of the linen spreading device in FIG.

FIG. 5 is a perspective view of a linen gripping tool and a traveling rail according to an embodiment of the present invention.

FIG. 6 is a side view of the linen gripping tool in FIG.

FIG. 7 is a perspective view showing a conventional linen developing device.

[Explanation of symbols]

 1 Linen 14a, b Supply free rail 15 Grasping tool feeding device 16a, b Slide rail 17a, b Moving body 21 Ball screw 22 Ball spline 23, 25 Servo motor 26a, b Return rail 27 Roller cam 37 Conveyor 40 Grasping tool

Claims (1)

[Claims] 1. A linen unfolding device that stretches linen whose two ends are suspended by a movable gripper and feeds the linen onto a belt conveyor.
Two sets of supply free rails that transfer pairs of grippers separately, two sets of slide rails that are placed in parallel and into which the grippers are fed simultaneously from the free rails, and linens are developed with the slide rails in parallel. In order to do so, a moving mechanism that moves the gripper at right angles to each other and in opposite directions,
A feature is that the grippers in the slide rails are simultaneously moved in the traveling direction while the linen is expanded, the linen is released from the grippers in the middle of the movement, and the linen is supplied to a conveyor provided below. Linen development equipment.