JP2000116996A - Conveyor for stretching cloths - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyor for stretching cloths, into which large cloth such as a sheet and small cloth such as a pillowcase are input at the one position of the front face thereof to processed the following process. SOLUTION: In this conveyor for stretching cloths, which enables cloths to be stretched and conveyed to the following process, at a position where large cloth such as a sheet should be input, the hand operating surface 71 of the hand-operating conveyor 7, which is the part of the output conveyor 65 of a conveyor 6 comprising a vacuum conveyor 61 and an output conveyor 65, is fallen down toward an operator. Small clothes are input at the same position where large cloths are input, and these cloths are supplied to the next process.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION The present invention relates to a method for automatically expanding a large-area cloth such as a sheet and transporting the cloth in a stretched state to a next process apparatus such as a press machine or a folding machine. And related to a cloth stretching and transporting machine.

[0002]

In a laundry factory for cleaning cloths, the work of washing and drying the cloths is pressed by a press machine or folded by a folding machine. When the cloth is supplied to a press machine, the cloth must be transported in a state where the cloth is spread in advance.

[0003] Conventionally, a cloth spreading and conveying machine grips both end corners of a cloth with a clamp, moves the cloth upward by a lifting / lowering means, and then switches to a clamp that grabs both end corners of the cloth and expands in the lateral direction. At the same time, the clamps are removed from the conveyor to transport the stretched cloth suspended by the clamps to the next process. (See, for example, JP-A-6-71098).

[0004] However, in the above-described cloth spreading and conveying machine, the cloth is transferred from the clamp to be spread onto the conveyor until the lowermost end of the cloth is sent out from the starting end of the conveyor.
The loading device and the stretching device are not ready to move the next cloth, and are in a standby state to adjust the delivery timing, so the loading device grabs the next fabric and places it on the front of the conveyor by the stretching device. There is a time lag before the extension, and the time lag varies depending on the width of the cloth. However, there are problems such as a reduction in the processing capacity of the apparatus and a change in the standby time due to the time lag.

[0005] Further, in the delivery of the cloth from the clamp for expanding the cloth to the conveyor as described above, the cloth is sucked onto the conveyor belt by a suction force from a state in which both corners of the cloth are suspended by the clamp. The cloth suspended due to its own gravity and suction force becomes slack, and moves from this state to the conveyor belt, so the upper side of the cloth is disturbed and the upper side of the cloth may not be aligned on the conveyor. There was a problem that often occurred.

In order to solve the above problem, a suction box having a flat plate surface and reciprocating back and forth is provided as a transfer device between the spreading device and the conveyor. Transfer the parts to create a temporary standby state, measure the timing of delivery to the conveyor belt, and evenly support the upper side of the cloth by suction of the suction box, and transfer the upper part of the cloth to the conveyor. The idea was to create a smooth transition without disrupting the department. Nevertheless, in order to spread a wide cloth such as a sheet neatly, it is necessary to apply tension to the cloth in both the left-right direction and the vertical direction.

For this reason, a conventional cloth spreading and conveying machine X as shown in FIG. 4 has been devised. The conventional cloth spreading and conveying machine X finds the corners at both ends of one side from the washed and dried large cloth S, and holds the corners on the charging chucks 11 of the charging device 1 respectively. Then, the loading chuck 11 rises while holding both end corners of the cloth, and puts both end corners of the cloth into the stretching device 2.
Is transferred to the left and right expansion chucks 21, and then the respective expansion chucks 21 move left and right outward to expand the upper side of the cloth S.

Subsequently, as the feeding roller 35 rotates in the feeding direction, the air in the vacuum box 31 is sucked, and the lower portion of the cloth suspended by each of the extension chucks 21 as indicated by S4. Is sucked into the vacuum box 31. At this time, a tension is applied to the cloth S4 downward, and the cloth is spread in a square shape. Subsequently, the upper side of the cloth S4 held by the left and right chucks 21 is placed on the starting end of the vacuum conveyor 61 by the transfer device (reference S5). After transferring to 65 and loading conveyor 81,
It is supplied to a press machine 8 and pressed there.

[0009] However, in the above-mentioned conventional cloth stretching and conveying machine, from a wide-width cloth such as a sheet or a wrapper handled in a laundry factory to a relatively small width such as a pillow cover.
At present, large and small cloths are processed by a common press machine. In this case, since the cloth of a small width cannot be processed from the front of the cloth spreading and conveying machine X of FIG. 4, the discharge conveyor 65 is flipped up to a high position by the air cylinder 70, and the worker inputs the cloth on the press machine 8 side. Standing in front of the conveyor 81, the cloth S having a small width is directly supplied to the starting end of the charging conveyor 81 by hand. Therefore,
The work of supplying the small-sized cloth S to the press machine 8 is troublesome, and the work is performed in a place where the working environment is poor because the temperature near the press machine 8 is high.

According to the present invention, in order to solve the above-mentioned problems, all the cloths are thrown in from a fixed position on the front surface of the cloth spreading and conveying machine regardless of the size of the cloths. Expand,
Cloths that can be conveyed and supplied to the next process device (for example, a press machine), and that are provided with a delivery device for precisely aligning the upper side of the fabrics from the stretching device to the conveyor, and delivering them at the right timing. The purpose is to provide a stretch conveyor.

[0011]

The present invention has the following structure as means for achieving the above object. The cloth spreading and conveying machine of the invention of the present application is a charging device that holds both end corners of one side of a large-sized cloth and transfers it to a position higher than the height of a person, and is transferred to a high position by the charging device. Device that receives the corners at both ends of the cloth and expands the cloth in the left-right direction, a delivery device that receives the upper side of the cloth stretched by the stretching device, holds the cloth equally, and takes delivery timing, and the stretching device A suction device having a vertical vacuum box installed almost directly below the vacuum box and sucking the air in the vacuum box downward with a suction fan; And a transport device for transporting to the machine side.

The loading device is provided with two loading chucks disposed on the left and right with an interval of about the width of a person's shoulder, and with each loading chuck gripping both corners of one side of the cloth, an appropriate lifting device And then pass it on to the expansion device. The loading device can be displaced between a lower use position and an upper retreat position by a vertical movement device.

The stretching device has two left and right stretching chucks that can receive both end corners of the cloth from the respective loading chucks, and the left and right stretching chucks are separated and approached in the left and right direction by a left and right moving device, respectively. The left and right directions are extended.

The suction device is provided with a vacuum box for pulling the lower part of the cloth hanging by the extension chuck by a suction force. The suction port of the vacuum box is open upward to receive the lower part of the cloth hanging by the extension chuck. The vacuum box communicates with a suction fan, and sucks air in the vacuum box downward by the suction fan.

The delivery device advances to the upper side of the hanging cloth stretched by the right and left stretching chucks, scoops it, receives it from the stretching device, retreats, and uniformly moves it on the vacuum conveyor which is the first stage conveyor of the transport device. It consists of a suction box that is dropped and passed. The suction box sucks the air inside the suction box to evenly hold the upper side of the cloth with the flat surface of the suction box and reciprocates while timing from the front to the back of the vacuum conveyor. I have.

The transfer device has a vacuum conveyor whose upper side is held by the suction box of the delivery device and receives the hanging cloth, and a discharge conveyor which is a second-stage conveyor connected to the end of the vacuum conveyor. are doing. In addition, the input conveyor of the press machine side is continuous with the terminal part of a discharge conveyor.

This cloth spreading and conveying machine has a mechanism that allows a part of the discharge conveyor to be used as a hand-held conveyor for hand-holding. Covers extend to the front of the cloth spreading conveyor, and a handle surface appears, and when folded up, the back surface of the handle surface of the handle conveyor becomes the rear wall of the vacuum box and the rear wall of the vacuum box. Store in.

With the above configuration, in order to process a large-sized cloth such as a sheet by the cloth spreading and conveying machine, the hand-held conveyor is raised and stored in the rear side wall of the vacuum box which is the retreat position. . At the loading position, the corners at both ends of one side of the large cloth are searched and held on the left and right loading chucks. Then, each of the loading chucks is moved upward, and both end corners of the cloth are transferred to the left and right expansion chucks of the spreading device, and the left and right expansion chucks that receive and hang the upper end corners of the cloth are respectively. At the same time as moving to the left and right outward, the upper side of the cloth is expanded left and right, the suction action in the vacuum box is started, and the air and the lower part of the cloth are sucked through the suction port. The cloth that has entered the vacuum box hangs while being stretched in the vertical direction by suction.

Subsequently, the suction box of the delivery device is advanced to the upper side of the spread cloth, the expansion chuck of the expansion device is removed, and the suction box receives the upper side of the cloth and holds the cloth uniformly. . After the delivery timing, the suction box retreats and is placed on the starting end of the vacuum conveyor of the transport device. After the cloths are transferred to the discharge conveyor and the input conveyor in the stretched state, they are supplied to a press machine and pressed there.

On the other hand, in the case of processing small-sized cloth such as a pillow cover by the cloth spreading and conveying machine, the charging device is moved to the upper retreat position, and the operation device is used to move the rear of the vacuum box. The hand-held conveyor retracted into the wall is lowered to the front, and a small-width cloth is placed on the hand-held surface of the hand-held conveyor while being spread. Then, the small-width cloth is transferred from the hand conveyor to the discharge conveyor in an expanded state, and further transferred to the input conveyor on the press machine side, and then supplied to the press machine.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The configuration of the cloth spreading and transporting machine Y for processing large-size cloths includes a loading device 1 for feeding the cloths S to the cloth spreading and conveying machine Y, and a cloth S at a position higher than the height of a person. , A suction device 3 that sucks the lower part of the cloth S downward and expands it vertically, receives the spread cloth S, and waits and conveys it for timing adjustment. The apparatus is composed of a delivery device 4 for delivery to the device, and a transport device 6 for transporting the delivered cloth S to a press machine 8.

In order to transport the small-sized cloth S to the press 8, a hand conveyor 7 is provided in the transport device 6, and the cloth S is placed on the hand-held conveyor 7 from the front side of the cloth spreading and transporting machine Y. 8
Is transported to

The loading device 1 is installed at a work position in front of the cloth spreading and transporting machine Y, and is disposed on the left and right with an interval of about the width of a person's shoulder, and corners Sa, Sa at both ends of one side of the cloth S.
It has a pair of left and right loading chucks 11 for gripping (FIG. 2), and a lifting device 12 for lifting and lowering each of the loading chucks 11. The loading device 1 is displaced by an air cylinder 15 which is a driving source of a vertical movement device between a use position in which it is lowered as shown in FIG. 1 and a retracted position which is raised as shown in FIG. It is possible to make it.

That is, the charging chucks 11 and 11 and the elevating device 12
Is supported by an arm 13, the upper end of the arm 13 is pivotally supported by a shaft 14, and the arm 13 is raised and lowered by an air cylinder 15 of a vertical movement device to thereby raise and lower the lifting device 12 of the input device 1. Is adapted to rotate about a shaft 14. When the large-size cloth S is to be processed, the charging apparatus 1 is tilted to the lower use position as shown in FIG. 1, and when the small-size cloth S is to be processed as described later, Can be raised and retracted at an upper out of the way position as shown in FIG.

The stretching device 2 includes left and right charging chucks 11, 11.
A pair of left and right expansion chucks 21 and 21 for receiving the corners Sa and Sa at both ends of the cloth held by
Left and right motion devices 22 and 2 for moving 1 and 21 in the left and right direction respectively
And 2. Motors 23, 23 are used for the left and right motion devices 22, 22, respectively. By rotating the motors 23 forward and backward, the expanding chucks 21 are moved in the left and right directions along the rails 24, and are separated or approached from each other. It is possible to hurry. In addition, the both ends corners of the cloth Sa, Sa are stretched by chuck 2
When each of the extension chucks 21 and 21 is moved in the left and right separation direction by the left and right moving devices 22 and 22 in the state of being received at 1 and 21, the upper side portion of the cloth can be extended as shown by reference numeral S in FIG. .

The suction device 3 is a stretching chuck of the stretching device 2.
Vacuum box 31 which is located immediately below 21, 21 and comprises a front side wall, a rear side wall, and both side walls and is open at the top to form suction port 32, and sucks air in vacuum box 31. It has a suction fan 33, and a switching damper 53 is provided between the vacuum box 31 and the suction fan 33. The switching damper 53 starts and stops the suction of the air in the vacuum box 31. Left and right extension chuck 21, 21
Immediately after the upper side of the cloth is expanded by the, the switching fan 53 communicates the suction fan 33 with the passage in the vacuum box 31 to suck the air in the vacuum box 31.
Note that the switching dambar 53 is operated by an air cylinder 54.

The suction fan 33 sucks the vacuum box 31 and also sucks the air from the suction port 52 provided below the start end 62 of the vacuum conveyor 61 by switching the switching damper 53. That is, when the rod of the air cylinder 54 is extended, the passage on the side of the vacuum box 31 is shut off, and the intake passage 51 and the suction fan 33 communicate with each other. As described above, the intake passage 51 is shut off and the inside of the vacuum box 31 communicates with the suction fan 33.

The vacuum box 31 is wider and wider than the maximum width of the cloth to be treated in the left and right direction and has a predetermined depth, for example, about 1 m. 35 are provided. This feeding roller 35 is
The cloth 36 is rotated at a high speed by the motor 36 almost in synchronism with the suction operation of the suction device 3 and the lower side of the cloth is fed into the vacuum box 31.

The delivery device 4 includes a suction box 41, a suction device 42 for sucking the inside of the suction box 41,
An air cylinder 43 for moving the 41 forward and backward and the upper side of the cloth held in the expanded state by the expansion chucks 21 and 21 are sprayed, and the upper side of the cloth is transferred to the upper surface of the suction box 41. Blow 45 to be performed. Suction box 41
Has a left and right length greater than or equal to the maximum width of the cloth S to be processed. A large number of small holes for suction are formed on the upper surface of the suction box 41, and the upper side of the cloth is sucked on the upper surface of the suction box 41 by sucking the air in the suction box 41 with the suction device. I am getting it.

The delivery device 4 includes an air cylinder 43
When the rod is contracted, the tip of the suction box 41 advances beyond just below the expansion chuck 21, and when the rod of the air cylinder 43 is extended, the suction box 41 retreats beyond the start end of the front conveyor 61, It reciprocates at high speed.

The transport device 6 has a vacuum conveyor 61 for receiving the cloth S in a stretched state from the delivery device 4, and a discharge conveyor 65 continuous with a slight gap at the end of the vacuum conveyor 61. Vacuum conveyor 61
A perforated belt with a large number of small holes is used.
Further, the vacuum conveyor 61 is located below the suction box 41, and the starting end of the vacuum conveyor 61 is
Is almost in the middle of the round trip. An intake port 52 is opened below the start end 62 of the vacuum conveyor 61.
The intake port 52 communicates with the switching damper 53 and the suction fan 33 through the intake passage 51, and sucks the cloth placed on the start end 62 of the vacuum conveyor 61 to suck the cloth. The end of the discharge conveyor 65 is connected to the input conveyor 81 on the press 8 side.

As shown in FIG. 3, the structure of the cloth spreading and conveying machine Y for processing the small width cloth S is such that the small width cloth S is manually fed into the cloth spreading and conveying machine Y. The hand conveyor 7 is formed at a portion on the front side of the end position of the vacuum conveyor 61 of the discharge conveyor 65.

The hand-held conveyor 7 has a surface on which the small-sized cloth of the belt wound around the base roller 73 installed at a fixed position and the starting roller 72 serving as the starting end of the hand-held conveyor 7 is manually operated. Hanging surface 71. Then, a vacuum box is provided on the opposite side of the handle surface 71 between the base roller 73 and the starting roller 72.
Attach the plate material 75 that will be the upper wall of the rear side wall of the 31. The plate 75 blocks the rear air passage, stops the flow of air from the rear, and facilitates drawing the expanded cloth into the vacuum box 31 by air pressure from the front.

The hand-held conveyor 7 has a base roller 73 as an axis and a starting roller 72 as an air cylinder which is a driving source of an operating device.
Tilt it forward to open it at 74, or fold it up and rotate it so that it is stored in the rear wall. That is, when the rod of the air cylinder 74 is contracted as shown in FIG.
, The starting roller 72 is raised up,
The handle surface 71 of the handle conveyor 7 is stored in the rear side wall of the vacuum box 31 to open the suction port 32, and the plate 75 is attached to the rear side wall.
Appears. When the rod of the air cylinder 74 is extended as shown in FIG. 3, the air roller 74 rotates around the base roller 73, and the starting roller 72 passes over the suction port 32 of the vacuum box 31 and operates the front surface of the cloth spreading and conveying machine Y. It is tilted to the position, and the cuff surface 71 of the couch conveyor 7 appears.

With the above configuration, the cloths to be treated are piled up in advance near the loading device on the front side of the cloth spreading and transporting machine Y. When processing a large cloth S, as shown in FIG. 1, the loading device 1 is moved to a lower use position by a vertical movement device, and the hand conveyor 7 is raised upward and stored in the rear side wall. Keep it.

In this state, the corners Sa, Sa at both ends of one side of the large-sized cloth S are searched for, and the corners at both ends are gripped by the charging chucks 11, 11 of the charging device 1, respectively. And
When the start button is pressed (or automatically), the loading chuck 11 is lifted by the elevating device 12 while holding the both end corners of the cloth, and the both end corners of the cloth are moved to the left and right expansion chucks 21, 21 on the expanding device 2 side. Handed over and seized. (State S1) Then, the left and right expansion chucks 21, 21 are separated to the left and right, and the upper side of the cloth is expanded in the left-right direction between the two expansion chucks 21, 21 (state S2 in FIG. 2). .

Immediately after that, when the feeding roller 35 rotates at a high speed in the feeding direction, and the switching damper 53 is switched to suck the inside of the vacuum box 31 of the suction device 3, the feeding roller 35 is suspended by the left and right expanding chucks 21, 21. Cloth is pulled back by the suction force, and the lower side of the cloth is
It is caught in contact with 35 and sent into the vacuum box 31. The cloth entered into the vacuum box 31 is caused to flow in the downward flow of the air by suction and is expanded in the vertical direction (state of S4), and at the same time, the expanded cloth is captured by the sensor and the switching damper 53 is switched. And vacuum box
The suction in 31 stops.

Next, the cloth S suspended in the extended state
, The tip of the suction box 41 moves on the upper side of the cloth and scoops. Each expansion chuck that blows air from the blow 45 toward the upper side of the cloth and simultaneously grips both corners of the cloth
When the grippers 21 and 21 are released, the upper side of the cloth is transferred onto the suction box 41 by blowing air from the blow 45 and falling by gravity, and the suction box 41 is suctioned by the suction device 42 at this time. Therefore, the upper side of the cloth is sucked on the upper surface of the suction box 41 and is uniformly held. With the upper side of the cloth S held by the suction box 41, the apparatus is in a standby state until the lower end of the previous cloth has passed from the start end of the vacuum conveyor 61. During this waiting, the next cloth moves from the input device to the spreading device.

When the lower end of the preceding cloth S has passed the starting end 62 of the vacuum conveyor 61, the rod of the air cylinder 43 extends and the suction box 41 retreats. As a result, the upper side of the cloth S comes into contact with the starting end 62 of the vacuum conveyor 61, the upper side of the cloth is removed from the suction box 41, and since the switching damper 53 has already been switched, the suction fan 33
The suction action of the suction port 52 and the natural fall of the cloth due to its own weight cause the cloth to be adsorbed to the start end 62 of the vacuum conveyor 61 and transferred onto the upper surface of the vacuum conveyor 61.

Then, the cloth S is placed on the vacuum conveyor 61.
After the upper side is placed, it is conveyed to the discharge conveyor 65 by the rotation of the vacuum conveyor 61, subsequently conveyed to the charging conveyor 81, supplied to the press machine 8, and pressed there.

In the case of processing the cloth S having a small width by the cloth spreading and conveying machine Y, as shown in FIG. When the rod of the air cylinder 74 is extended, the handle surface 71 of the handle conveyor 7 is folded down so as to cover the suction port 32 of the vacuum box 31, and is installed on the front surface of the cloth spreading and conveying machine Y. In this state, the cloth S having a small width is placed on the handle surface 71 of the handle conveyor 7 while being stretched. Then, the cloth S is
In the expanded state, the paper is supplied from the hand conveyor 7 to the press machine via the discharge conveyor 65 and the input conveyor 81.

As described above, the cloth spreading and conveying machine Y of the present invention
Can be loaded from the same position on the front surface of the cloth spreading and transporting machine Y, not only a large cloth S such as a sheet but also a small cloth S such as a pillow cover.

[0043]

Since the present invention is configured as described above, it has the following effects. The cloth spreading and conveying machine is equipped with a hand-held conveyor that conveys small-sized cloths such as pillowcases in addition to the usual line for expanding and conveying large-sized cloths such as sheets. Cloth and small-width cloth can be loaded from the same working position,
This frees the operator from having to change the operation place of the machine.

Since one machine has a function of processing large-width cloths and small-width cloths, it has a variety of high-efficiency processing capabilities in a small space. Since the upper edge of the cloth is once received by the suction box from the state where the upper corners of the cloth are hung and suspended, and the upper edge of the cloth is uniformly held, the upper edge of the cloth is cleaned when the cloth is transferred to the vacuum conveyor. Can be placed on a vacuum conveyor in a line, so that the finish of the cloth is beautiful.

[Brief description of the drawings]

FIG. 1 is a side view of a cloth spreading and conveying machine according to an embodiment of the present invention.

FIG. 2 is a front view of the cloth spreading and conveying machine of FIG. 1;

FIG. 3 is a side view of the cloth spreading and conveying machine shown in FIG. 1 when a hand conveyor is used.

FIG. 4 is a side view of a conventional cloth spreading and conveying machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection device 2 Expansion device 3 Suction device 4 Delivery device 6 Transfer device 7 Hand conveyor 8 Press machine 11 Injection chuck 21 Expansion chuck 22 Left-right movement device 31 Vacuum box 32 Suction port 33 Suction fan 41 Suction box 52 Suction port 53 Switching damper 61 Vacuum conveyor 65 Discharge conveyor 71 Handle surface 72 Start roller 73 Main shaft roller 75 Plate S Cloth Sa Cloth corner

Claims (5)

[Claims] 1. An end portion (S) of one side of a wide cloth (S).
a, Sa) is gripped and transported upward, and the upper end corners (Sa, Sa) of the cloth (S) hanging on the loading device (1) are received and expanded in the left-right direction. A spreading device (2), a delivery device (4) that receives the upper side of the cloth (S) from the stretching device (2), holds the same evenly, and reciprocates back and forth while taking delivery timing, and a delivery device ( 4) The cloths (S) are uniformly dropped and received from the apparatus, and the vacuum conveyor (61) and the discharge conveyor (6)
5) A cloth spreading and conveying machine comprising a conveying device (6) for conveying by (5). 2. The delivery device (4) is a suction box (41) having a large number of small holes for suction formed on an upper surface thereof, and suctions air in the suction box (41) to uniformly suction cloth. The cloth spreading and conveying machine according to claim 1, wherein the cloth is stretched and held. 3. A vertical vacuum box (31) provided with a suction port on an upper portion is provided below the expansion device (2), and air in the vacuum box (31) is sucked downward or vacuumed. A suction fan (33) for sucking air by switching the air suction port provided on the conveyor (61) with a switching damper (53) is provided.
The cloth spreading and conveying machine according to claim 1 or 2, wherein the cloth suspended by being stretched in the lateral direction by the stretching device (2) is vertically stretched by the downward flow of air. 4. A hand-held conveyor (7) which can raise and lower a part of a discharge conveyor belt (65) of a conveying device (6) by raising an input device (1) upward. 4. The cloth conveyor according to claim 1, wherein the cloth conveyor can be placed on the discharge conveyor from the front side of the cloth spreading conveyor so that the cloths can be sent to the next step. 3. The cloth spreading and conveying machine according to 3. 5. A base roller (73) and a starting roller (7) of a hand-held conveyor (7) forming a part of a discharge conveyor (65).
A plate (75) is attached to the opposite side of the handle surface (71) to 2), and the plate (75) pivots around the base roller (73) to rise up, and after the vacuum box (31) The cloth spreading transport according to claim 4, wherein a suction effect is enhanced by forming a wall at an upper portion of the side wall to close the rear side, and the suspended cloth (S) is easily sucked into the vacuum box (31). Machine. [0001]