JPH06154493A - Bed sheet spreading machine - Google Patents

Abstract

PURPOSE:To provide a sheet spreading machine in which a bed sheet is set on a plurality of sheet holding tools in the fore-and-aft arrangement, with which saving the labor has been achieved by installing a junction device having a sheet holding function and sheet handover function between the front and rear sheet holding tools. CONSTITUTION:A sheet spreading device of a washing device for business field is used to insert a bed sheet, etc., after washing and dehydrated into a roll iron finishing machine, wherein sheet holding tools 5, 7 in a plurality of pairs are installed in fore-and-aft arrangement. Therein a junction device 9 is installed between a front station 2 having the tool 5, whose standby position lies on the righthand, and a rear station 3 having the tool 7 whose standby position lies on the lefthand. This junction device 9 has a junction chuck 17 at the foremost of a revolving arm, is equipped with a function to hand over the sheet to the rear sheet holding tool 7 after the sheet is held by the front station, and is arranged so as to be retreated to the over when operator is positioned in the rear station 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed to load sheets, such as sheets and wrapping cloth (hereinafter referred to as sheets) after washing and dehydration treatment in a commercial washing machine, into a roll iron finishing machine. Hold both ends of the rim with holding tools and stretch it,
The present invention relates to a sheet spreader in which the stretched sheets are fed and placed on a conveyor.

[0002]

2. Description of the Related Art A conventional sheet spreader generally comprises a pair of holders for stretching and expanding the sheets and a feeding conveyor for feeding the sheets stretched and stretched by the holders to a roll iron finishing machine. The sheet is stretched and stretched by a pair of holders, and the stretched sheet is fed on a conveyor to load the sheet into a roll iron finishing machine.

However, in a sheet spreader having a pair of holders and a feeding conveyor as a set, the step of spreading the sheet and the step of placing the sheet on the feeding conveyor are alternately performed, and the sheet is rolled by an iron. Since it can be supplied only intermittently to the finishing machine, there is a problem in finishing efficiency of the sheets.

In order to improve such a point, a plurality of pairs of holders for stretching and expanding the sheets are provided in front and rear, and a plurality of pairs of holders are used to stretch and expand the sheets. There has been proposed a sheet spreader capable of simultaneously performing the step of putting the sheet on the feeding conveyor (see Japanese Patent Publication No. 3-67720). Since this sheet spreader generally has a total of four sheet mounting work positions (front and rear, left and right) (this is called a station), a plurality of workers can carry out the mounting work, so that the finishing processing efficiency is improved.

[0005]

By the way, in the conventional sheet spreader as described above, there is a vacancy of the worker because the worker cannot perform the work of attaching to the holder unless the worker is at the station for attaching the sheet. If this happens, there is a problem that the work efficiency is reduced accordingly. For example, in the case where each of the four stations has one worker (4 in total) and the case where two workers work at two stations, the latter is 50% more efficient than the former. turn into.
In addition, as described above, when one worker has one station as a station, the next sheet cannot be mounted until the retainer for the previously sent sheet returns to the station. However, the waiting time for workers may increase.

The present invention solves the problems of the prior art as described above, and when the worker is vacant, the worker of the front station also attaches the washed sheets to the sheet holder of the rear station. It is an object of the present invention to provide a sheet spreader capable of maintaining high working efficiency.

[0007]

According to the present invention, in order to achieve the above-mentioned object, a plurality of pairs of sheet holders, each pair consisting of a pair of sheets, are arranged at the front and the rear, and each of the sheet holders has a sheet. In a sheet spreader having a plurality of work stations for mounting the front and rear, a relay device is provided between the front sheet holder and the rear sheet holder, and the relay device is It is characterized in that it has a function of holding a sheet at a mounting work position on the front sheet holder and a function of delivering the held sheet to the rear sheet holder.

Further, the relay device according to the present invention is characterized in that it can be retracted from the intermediate position when the worker is arranged on the rear sheet holder.

[0009]

Since the sheet spreader of the present invention is constructed as described above, the operator at the front station can attach the washed sheets to the sheet holder of the rear station through the relay device. , Thereby effectively using the handheld time, for example, mounting work by two workers is
It can be performed with a high efficiency of about 70% of excellent work. Further, when three or four people work, the relay device can be evacuated and the worker can be placed at the rear station, which is highly versatile.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall front view showing an embodiment of the sheet spreader of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.

In these figures, 1 is a main body frame,
2 is a front station, 3 is a rear station, and 4 is a feeding conveyor for loading the stretched sheets into a roll ironing machine. The right end of the front station 2 is provided with a pair of two sheet holders 5 for the front station, and the left end of the front station 2 is provided with a pair of two sheet holders 6 for the front station. ing. Similarly, at the right end of the rear station 3, a pair of sheet holders 7 for the rear stations is provided at the right end, and at the left end a pair of sheet holders 8 for the rear station is provided at the left end.

Each of the above-mentioned sheet holders is attached, for example, to a pair of right sheet holders 5 (or 7) with both ears of one sheet sandwiched therebetween. ) Moves to the left and stretches the sheets in the central sheet spreading area, then puts the sheets on the conveyor 4 and sends the sheets to the roll ironing machine, and then the pair of sheet holders 5 (or 7).
When the pair starts to return to the right, the pair of left side sheet holders 6
(Or 8) moves to the right to stretch and spread the sheets in the central sheet spreading machine area, and then the sheets are fed onto the conveyor 4 to feed the sheets to the roll ironing machine, and the pair of sheet holders 6 ( Alternatively, the pair of holding members 5 (or 7) on the right side is configured to perform the stretching operation of the sheets when 8) starts to return to the left.
The above-mentioned operations are all automatically controlled by the microcomputer control. For example, when photoelectrically detecting that the sheets are attached to the sheet holders 5-8, the sheet holders are expanded and expanded. And the sheets are held on the left (or right) sheet holder before the right (or left) sheet holder moves in the return direction,
Wait until the sheet holder on the other side starts the return operation, and when the sheet holder on the other side starts to move in the return direction, follow it and stretch it to the sheet holder holding the sheet. It is configured to perform an operation.

In the present invention, between the front station having the sheet holder 5 whose standby position is on the right side and the rear station 3 whose standby position is on the right side, and the sheet holder 6 whose standby position is on the left side. A relay device 9 is arranged between the front station and the rear station having the sheet holder 8 whose standby position is on the left side, and the relay device 9 is provided to the front sheet holder 5 (or 6). It is provided with a function of holding the sheet at the sheet mounting operation position and a function of transferring the held sheet to the rear sheet holder 7 (or 8). However, as will be described later, the relay device 9 retracts the worker from the middle of the front station 2 and the rear station 3 to the upper side when arranging the worker at the rear station 3.

1 to 8 show a state in which the relay device 9 is arranged between the front station 2 and the rear station 3. As shown in FIG. 7, the relay device 9 includes a base plate 11 fixed to a lower surface of a bracket 10 of the relay device and a bearing 1 attached to the base plate 11.
Drive shaft 13 rotatably supported by 2 and drive shaft 1
3, an arm 14 fixed to the arm 3, a driven shaft 15 pivotally supported at the other end of the arm 14, and a bracket 16 attached to the driven shaft 15.
When the relay device 9 is arranged in the middle between the front station 2 and the rear station 3, the chuck port 17a of the relay chuck 17 faces the front side, and the relay chuck 17 is fixed to the front side. An operator located at the station 2 can wear the sheets on the relay chuck 17. When the photoelectric chuck detects that the sheet is inserted in the chuck opening 17a, the relay chuck 17 detects the chuck opening 17a.
Is closed and the drive shaft 13 is driven to direct the arm 14 rearward, and in conjunction with the drive shaft, the driven shaft 15 is rotated by 1/2 of the drive shaft to move the chuck port 17a downward as shown by a chain line. The sheets can be transferred to the sheet holder 7 (or 8) of the rear station.

This state will be described with reference to FIGS. As shown in FIG. 4, the relay chuck 17 is slightly below the front sheet holder 5, and its chuck port 17a faces forward. Because of this state, the front worker attaches the sheet 10 to the relay chuck 17 as shown in FIG.
You can wear 0. When the sheet 100 is attached to the relay chuck 17, the arm 14 is moved to the position shown in FIG.
The driven shaft 15 turns to the rear while turning by 80 °, and the driven shaft 15 rotates 1/2 the rotation of the drive shaft 13 so that the chuck opening 1 of the relay chuck 17 is rotated.
7a downwards and the sheet holder 7 of the rear station
When the sheet is inserted into the chuck opening of the sheet, and the rear sheet holder 7 detects the sheet, the relay chuck 17 releases the sheet chuck and returns to the original position as shown by the chain line. In the meantime, the operator can attach the next sheet 101 to the front sheet holder 5 at the same position. FIG. 8 is a plan view for explaining the case where the worker is arranged only on the front side as described above.

FIG. 9 is a front view of the relay device. In this figure, 10 is the relay bracket, 11 is also the base plate, 13 is the drive shaft, and 14 is the arm. One end of the drive shaft 13 is configured to be rotationally driven by a rotary reactor 19 via a coupling 18, and a small pulley 20 is attached to the drive shaft 13 of the drive shaft 1.
3 is rotatably fitted, and the small pulley is fixed to the base plate 1 by the small pulley fixing bracket 21.
It is supported by 1. A driven shaft 15 is rotatably supported at the other end of the arm 14 fixed to the drive shaft 13 via a fixing bracket 22, and a relay chuck 17 is fixed to the driven shaft 15 via a chuck fixing bracket 16. . Also, a large pulley 24 is fixed to the driven shaft 15,
The large pulley 24 is connected to the small pulley 2 via the belt 25.
It is linked to 0. The relay chuck 17 is equipped with a chuck opening / closing device 23, and opens the chuck opening by a photoelectric detection signal when the sheet is inserted into the chuck opening 17a or a photoelectric detection signal when the sheet is inserted into the rear side sheet holder. It is configured to open and close. Reference numeral 26 is an actuator fixing bracket.

Since the relay device 9 is configured as described above, the sheets are relay chucked by the front chuck 17 at the front station.
When it is attached to the rear station 3, the rotary shaft 19 rotates the drive shaft 13 to rotate the arm 14 toward the rear station 3. At this time, since the small pulley 20 is fixed to the base plate 11, the small pulley 20 does not rotate together with the drive shaft, while the large pulley 24 is fixed to the driven shaft 15, and the large pulley 24 and the small pulley 20 are separated from each other. Since the belt 25 is hung on the driven shaft 15, the driven shaft 15 rotates by the diameter difference between the large pulley 24 and the small pulley 20 when the arm 14 turns. For example, if the diameter ratio between the small pulley 20 and the large pulley 24 is set to 1: 2, the driven shaft (chuck) will rotate 90 ° when the drive shaft (arm) rotates 180 °. As described above, the chuck mouth 17a faces downward and delivers the sheets to the sheet holder 7 of the rear station.

The bracket 10 of the relay device is shown in FIG.
As shown in FIG. 3, the air cylinder 30 is attached to the main body frame 1 via a hinge 27 so as to be tiltable, and an air cylinder 30 is attached to a bracket 28 projecting on the main body frame 1 via a shaft 29 and a piston rod of the air cylinder. Thirty
The tip of a is coupled to the bracket 10 of the relay device via a shaft 31. Therefore, when the air cylinder 30 is contracted from the position shown by the solid line in FIG. 10, the relay device 9 can be retracted upward as shown by the chain line.

FIG. 11 is a partial side view when the relay device is retracted as described above and an operator is attached to both the front station and the rear station, and FIG. 12 is a plan view for explaining the same.

[0020]

As described above, according to the present invention, when there is no operator at the rear station, the operator at the front station also attaches the sheets to the sheet holder of the rear station through the relay device. As a result, it is possible to effectively use the hand-held time and to perform the work with a high efficiency of, for example, about 70% of the four workers when the two workers work.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

[Figure 3] Similarly, a side view

FIG. 4 is an enlarged view of a portion of the relay device viewed from the side.

FIG. 5 is an explanatory diagram when the sheets are attached to the relay device.

FIG. 6 is an explanatory diagram of delivery from the relay device to the rear sheet holder.

FIG. 7 is a side view of the relay device.

FIG. 8 is an explanatory plan view when an operator is attached only to the front station.

FIG. 9 is a front view of the relay device.

FIG. 10 is a front view showing a mounting state of the relay device.

FIG. 11 is an explanatory diagram when an operator is attached to both the front station and the rear station.

12 is an overall plan view of the state of FIG.

[Explanation of symbols]

1 ... Main body frame, 2 ... Front station, 3 ... Rear station, 4 ... Infeed conveyor, 5 ... Front sheet right side sheet holder, 6 ... Front station left sheet holder, 7 ... Rear station right sheet holder Tool, 8 ... Left side sheet holder of rear station, 9 ... Relay device, 10 ... Relay device bracket, 11 ... Base plate, 12 ... Bearing, 13 ... Drive shaft, 14 ... Arm, 15
... Drive shaft 16 ... Bracket, 17 ... Relay chuck, 18 ... Coupling, 19 ... Rotary actuator, 20 ... Small pulley, 21 ... Small pulley fixing bracket, 24 ... Large pulley,
25 ... Belt, 27 ... Hinge, 30 ... Air cylinder.

Claims (2)

[Claims] 1. A plurality of sets of two sheet holders are provided in front and back, and a pair of work positions for attaching sheets to each of the respective sheet holders are provided in front and back. In the sheet spreader, a function of disposing a relay device between the front sheet holder and the rear sheet holder and capable of holding the sheet at the sheet mounting operation position on the front sheet holder to the relay device. , A sheet spreader having a function of delivering the held sheet to a rear sheet holder. 2. The relay device is configured to be retracted upward from an intermediate position between the front sheet holder and the rear sheet holder when the worker is arranged at the rear sheet mounting work position. The sheet spreader according to claim 1.