JP2695739B2 - Device for unfolding rectangular cloth - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for unfolding a rectangular cloth piece such as a sheet from a suspended state.

[0002]

2. Description of the Related Art A conventional apparatus for gripping one edge of a corner of a rectangular cloth piece, pulling it on a mounting table, and developing one side of the cloth piece has been proposed in Japanese Patent Application Laid-Open No. Hei 4-9198. However, this will be described with reference to FIGS. The conventional framing device shown in FIGS. 14 to 18 is for framing a rectangular cloth piece Y such as a sheet shown in FIG. 19, for example, and assembles a frame material back and forth, left and right, and up and down. And a rectangular solid type base 1 having a considerable length in the front-back direction (substantially longer than the entire length of the long side of the rectangular cloth piece Y to be processed); A movable body 2 which can move forward and backward, and a rectangular cloth piece Y provided at two positions on the movable body 2 at predetermined intervals in the horizontal left and right directions.
Of one corner C ₁ and a part of the edge Ya adjacent to the corner C ₁
Cloth corner holding means 22 which can be detachably held respectively
And a moving body driving device 3 for moving the moving body 2 in a range from a cloth holding position P at the front of the gantry to a drawing-in position Q at the rear of the gantry, and the gantry 1. The mounting table 4 supports the rectangular cloth piece Y drawn from the lower side of the mounting table from below, a conveyor 5 constituting a part of the mounting table 4, and the conveyor 5 is caused to travel in forward and reverse directions. Conveyor drive 6, side edge detector 71 for detecting the side edge Yb of the rectangular cloth piece Y, and edge detector 72 for detecting the end edge Yc of the rectangular cloth piece Y
And a controller 10 for controlling the operation of the bordering device.
And the basic configuration.

A single guide rail 11 is provided on the upper part of the gantry 1 in the front-rear direction at an intermediate position in the left-right direction.
Are guided so as to be movable forward and backward in the front-rear direction of the gantry. The moving range of the moving body 2 in the front-rear direction is shown in FIG.
As shown in the figure, the moving body 2 is located at the front of the gantry, and the holding means 22 and 23 can hold the rectangular cloth piece Y.
As shown in FIG. 18, the movable body 2 is set at a position not less than the range up to the cloth drawing-in position Q at which the rectangular cloth Y can be completely drawn onto the mounting table 4 at the rear of the gantry. Further, the moving body 2 has a length (40 to 6
On the left and right sides of a flat plate 20 having a length of about 0 cm), hanging plates 21 and 21 bent downward are provided. Each of the hanging plates 21 and 21 is provided with one holding means 22 and 23 for holding a piece of cloth. Incidentally, when viewed from the gantry front side, the holding member 22 located on the right side is for holding the cloth Katakaku section C _1, the holding means 23 positioned on the left side has become a fabric piece edge retention.
Each of the holding means 22 and 23 employs a clip-type air chuck which operates with compressed air.

[0004] The moving body driving device 3 includes sprockets 32, 32 provided on the front and rear portions of the gantry 1, respectively, and a chain 33 with ends provided between the sprockets 32, 32.
And a motor 31 for rotating one sprocket 32 in both forward and reverse directions. One end of the chain 33 is fixed to the moving body 2 after being wound around the front sprocket 32, and the other end of the chain 33 is fixed to the moving body 2 after being wound around the rear sprocket 32. Accordingly, the moving body driving device 3 can move the moving body 2 forward or backward along the guide rail 11 by rotating the sprocket 32 clockwise or counterclockwise by the motor 31. Further, the mounting table 4 is installed at a position slightly lower than the advance / retreat height position of each of the holding means 22 and 23. The mounting table 4 has a front base plate 41, which is relatively short in the front-rear direction, and a front base plate 41. A rear base plate 43 provided continuously to the rear edge of the base 41
And a conveyor 5 capable of moving forward and backward in the horizontal left and right direction near the rear end of the front base plate 41. The conveyor 5 is configured by winding a pair of belts 52, 52 of a total of four between a pair of left and right rolls 51, 51.
Appropriate intervals S are provided between the belts 52. In addition, the upper surface side running portion of each belt 52, 52 is installed so as to run at a position near the upper surface side of the rear base plate 43. In addition, the conveyor driving device 6 can rotate the roll 51 on one side (left side) of the conveyor 5 forward and backward through a sprocket and a chain by a motor 61 that can rotate forward and backward.

[0005] The side edge detector 71 is for detecting the side edge Yb of the rectangular cloth piece on the conveyor installation portion when the rectangular cloth piece Y is drawn into the back of the gantry. Phototubes are employed. The side edge detector 7
1 is that in the gap S between the first belt 52 and the second belt 52 from the front side of the gantry of the conveyor 5 on the rear base plate 43, It is installed almost immediately below the position where the vehicle passes, with the detection unit facing upward. A phototube is adopted as the end-edge detector 72. When the end-edge Yc of the rectangular cloth piece Y reaches the end of the conveyor 5 on the mounting table 4 on the front side of the gantry, the end-edge is detected. The presence of the section Yc is detected. That is, the end edge detector 72 is connected to the conveyor 5 on the rear base plate 43.
In the vicinity of the front end of the gantry, and substantially immediately below the position where the middle part of the moving body 2 in the left-right direction passes, the detection unit is installed facing upward. And the side edge detector 71
The end-edge detector 72 sends a detection state or a non-detection state of the piece of cloth to the controller 10.

The controller 10 receives a signal from the side edge detector 71 and controls the conveyor driving device 6 to move the conveyor 5 in either the forward or reverse direction. Upon receiving the cloth piece edge detection signal from 72, the moving body driving device is controlled to stop its operation. That is, when the side edge detector 71 is in the cloth piece non-detection state (when there is no cloth piece immediately above the side edge detector 71), the upper surface side of the conveyor 5 with respect to the conveyor driving device 6 When the vehicle is controlled to travel in the side edge pushing direction (from left to right) and the side edge detector 71 is in the cloth piece detecting state, the side of the upper surface of the conveyor 5 with respect to the conveyor driving device 6 is the side edge. Control is performed so that the vehicle travels in the part retraction direction (from right to left). Therefore, the side edge of the rectangular cloth piece that is in contact with the conveyor 5 is adjusted in small increments only in a small range on the left and right sides of the position detected by the side edge detector 71. become. Further, when the rectangular cloth piece Y is drawn into the back of the gantry together with the moving body 2, first, the end edge detector 72 first moves the rectangular cloth piece Y upward from the non-detection state of the cloth piece to the end edge detector. When the cloth is detected, the cloth piece detection state is reached. When the moving body 2 is further retracted and the end edge Yc of the rectangular cloth piece Y moves farther from the position detected by the end edge detector 72, the cloth piece is not detected again. In this state, the controller 10 receives the signal transmitted from the trailing edge detector 72 at that time, and the controller 10
Is controlled to stop operation immediately.

[0007]

When a rectangular cloth piece is pulled onto a mounting table made of a feed belt while providing contact resistance at the convex front edge, the side edge of the rectangular cloth piece is pulled in the pulling direction. Tend not to be parallel to and spread out. Japanese Patent Application Laid-Open No. 4-919 discloses a method proposed to correct the side edge of a cloth piece in parallel to the direction of pulling.
There is a mechanism for aligning side edges of a piece of cloth by a divided feed belt conveyor as disclosed in Japanese Patent Application Laid-Open No. 8 (1999). However, this conventional mechanism is complicated and increases the cost of the machine,
There is a problem that the time required for correcting the position of the side edge of the cloth piece is added to the time required to spread the cloth piece, the development cycle time becomes longer, and the ability cannot be increased. Also, since the position correction of the side edge of the cloth piece is performed after the cloth piece is pulled in and placed,
As a result of the cloth piece being sent to the next stage without being stretched and wrinkled, there is a drawback that the finished quality of sheets and the like in the ironer device in the subsequent process is reduced. Further, since one rectangular end and one of the sides including the corner are gripped by the gripper and pulled into the mounting table, the rectangular cloth piece needs to be gripped when handling a long rectangular cloth piece. The diagonal corners of the corners that have been set hang down in a tail-like manner and remain protruding from the mounting table, and may be caught or caught in the structure of the device during the next right-angle movement. Yes, if you try to pull the piece of cloth with the gripper onto the mounting table up to the tail of the corner of the piece of cloth, a longer mounting table will be required, and the size of the machinery will increase. there were. In addition, ordinary cloth pieces have a rectangular shape, but some of the cloth pieces that have undergone several washing treatments have been deformed, and these cloth pieces have one corner end and a side including the corner end. When one of the above is gripped by the gripper and pulled into the mounting table, in the case of a deformed piece of cloth, the hooking of the piece of cloth to the convex front edge becomes incomplete and the piece is pulled into the mounting table. The side edge of the rectangular cloth piece may be inclined with respect to the pulling direction, or may be disengaged from the protruding front edge and may not be deployed. At this time, this cloth piece is rejected in a later step, and the yield of work is reduced. Further, even if the cloth is pulled in obliquely and sent to the next step without being rejected and deployed, the quality of the laundry becomes inferior. The present invention has been proposed to solve the above-mentioned conventional problems.

[0008]

SUMMARY OF THE INVENTION For this reason, the present invention provides a method for forming a rectangular piece of cloth into an arbitrary corner end and one side including the corner end.
After the cloth piece is naturally hung by grasping with a movable grasping tool having two clips attached, the upper surface of the mounting table constituted by a belt conveyor or the like is horizontally placed on the convex front edge of the mounting table. In a cloth spreading apparatus having a process of pulling a cloth piece on a mounting table by pulling the cloth piece while making a resistance contact with the cloth piece, a large number of suctions are applied to a half surface on a cloth edge side of a cloth pulling track surface of the mounting table. A suction duct having a hole is provided, and this is used as a means for solving the problem. Further, the present invention provides a detection sensor which is located above the entrance of the cloth piece taking-in portion of the mounting table and detects the end when the edge connected to the corner gripped by the cloth piece gripping tool passes. In response to the signal transmitted by the sensor, the centering timing of the edge of the cloth piece is calculated from the traveling speed of the gripper and the timing of the passage of the gripper and the end of the cloth, and the grip release mechanism of the clip of the gripper is operated. And a control device, which is used as means for solving the problem.

Further, according to the present invention, there is provided a roller which presses a developing side of a cloth placed on an end of a conveyor which travels in a horizontal direction perpendicular to a pulling direction of a cloth serving as a mounting table, and moves in a direction opposite to the developing side. After the development side of the cloth piece is sandwiched between the conveyor end and the pressing roller, a slit provided with a downwardly convex development plate for sucking a central part of the cloth piece hanging from the mounting table conveyor end, and hanging down, And a friction roller provided at a front portion of the developing and feeding conveyor, which pushes the upper portion of the cloth piece onto a developing and feeding conveyor provided at a lower stage of the mounting table. It is a means for solving the problem. Further, the present invention, a concave front edge following the convex front edge of the cloth piece taking-in portion of the mounting table,
A nozzle having a plurality of nozzle holes which are attached to the frame in alignment with the concave center line of the concave front edge and whose upper surface is the same as the upper surface of the mounting table, and which has a plurality of nozzle holes on the upper surface obliquely blowing in the moving direction of the cloth piece A housing, an air source for sending air to the nozzle housing, and a guide plate for guiding a tail-shaped corner end of the piece of cloth blown up by the air blown out from the nozzle hole to a predetermined position on the mounting table. This is a means for solving the problem.

Further, according to the present invention, in the mounting table of the above-mentioned rectangular cloth spreading device, a unit table mounted on a fixing member above the cloth piece mounting table, and pivots on a fixed axis of the unit table. An operating lever, a brake roller installed on the operating lever, and having a function of simultaneously driving and stopping one or a plurality of conveyor belts, a pneumatic actuator for operating the operating lever, and a retractor perpendicular to the running direction of the conveyor belt. And a sensor for detecting a side edge portion of the cloth piece. The cloth piece mounting table has a structure in which a belt moving / stopping unit is arranged, and the air pressure is determined by a cloth piece detection signal generated by the sensor for each belt moving / stopping unit. A control circuit for instructing the actuator is provided, and when a piece of cloth is placed on a mounting table and the conveyor belt starts running, each of the belt operation / stop units is provided. It has a function of controlling the attitude of a cloth piece by receiving a cloth piece detection signal generated by a sensor and applying a brake to one or more conveyor belts and stopping the same. Is what you do. In addition, the present invention, in a rectangular cloth piece deployment device, provided below the convex front edge portion that is a cloth piece taking-in part,
A suction belt that is guided by a longitudinal pulley and has a plurality of suction holes that form a vertical side surface following the convex shape of the convex front edge and travels horizontally, and is housed inside the suction belt; A suction duct that is open on the side in contact with the convex vertical surface, a discharge pipe and a suction blower that discharges air from the suction duct, a motor that drives the suction belt, and a cloth side on a horizontal surface of the cloth intake section. A cloth detection sensor provided along the edge lead-in line, and detects a deviation of a side edge of the cloth based on a signal from the cloth detection sensor, and instructs the motor to perform forward or reverse rotation and stop, and outputs a command to the motor. A cloth width shifting mechanism comprising a control circuit for correcting the position where the edge passes is added, and this is used as a means for solving the problem.

[0011]

The operation of each mechanism and means in the means for solving the above problems will be described individually. The rectangular cloth piece is pulled on the mounting table by pulling the half of the cloth edge pulling track surface on the cloth edge side while being sucked into the many holes drilled in the mounting table, so that only the cloth edge side has a frictional resistance in the pulling direction. As a result, the cloth piece can be kept parallel to the traction direction.
In addition, the cloth edge of the cloth piece can be placed on the mounting table with tension kept from the end gripped by the hawk to the last part pulled, so while maintaining this state, the irona of the next process The quality of finished sheets and the like can be kept good. Further, while the rectangular cloth piece moves on the mounting table, the timing of the passing position is detected by the sensor,
Since the timing of the centering is calculated and released from the holding tool, no time loss occurs in this step.
Further, when the rectangular cloth enters the mounting table, a part of the rectangular cloth is always gathered at the concave front edge and hangs down like a tail even after the movement is completed. For this reason, if a nozzle case having a nozzle hole is arranged at the center of the concave front edge, a part of the rectangular cloth piece can be blown off without fail, so that the cloth piece near the front edge can be removed. Friction resistance is reduced. Furthermore, when the movement of the rectangular cloth piece is completed, the corner end of the cloth piece hanging down in a tail shape gathered at the concave front edge has a small area and is light, so it is blown up by the air blown out from the nozzle hole, and the guide plate is raised. And is placed at a predetermined position on the mounting table. Therefore, the problem that the corner of the cloth piece is caught or entangled and hinders the next cloth piece feeding step is eliminated.

Next, the operation of the cloth side edge aligning and mounting table constituted by arranging the belt moving / stopping units sideways will be described.
After the cloth pieces are drawn into the mounting table, at the stage where the conveyor belt is driven and the cloth pieces are sent to the next process, the presence or absence of the cloth pieces is detected by a sensor provided in each belt arresting and stopping unit, and the cloth is detected. When the strip passes and the sensor emits a cloth strip signal, which is sent to the control circuit, the control circuit activates the pneumatic actuator, releasing the tension pulley from the conveyor belt and applying a brake to stop it. In addition, after the signals from the sensors of all the conveyor belt belt units have no cloth pieces and it has been confirmed that all the side edges of the cloth pieces have been aligned at the predetermined positions on the conveyor belt, the brakes are released all at once. Move the conveyor belt to feed out the cloth pieces. Further, the cloth is provided by a suction belt which is provided at the lower portion of the mounting table and the convex front edge and guided by a vertical pulley and forms a vertical side surface following the convex shape of the convex front edge and travels horizontally. To explain the operation of the one-side edge alignment mechanism,
In the process in which the cloth piece is grasped by the gripper and drawn into the cloth piece taking-in part of the cloth piece spreading device, the cloth piece detection sensor provided on the horizontal surface of the cloth piece taking-in part detects the side edge of the cloth piece during the drawing movement. It is detected that the suction belt is deviated inward or outward from the correct drop-in line, and the control signal is operated by the signal to move the suction belt laterally so that the side edge of the cloth piece is along the correct drop-in line. During the lateral movement, when the cloth detecting sensor detects that the side edge of the cloth has been corrected so as to follow the correct lead-in line, the control circuit operates by the signal to release the brake of the suction belt. Further, the suction force of the suction belt strengthens the ironing of the cloth piece at the convex front edge, improves the linearity in the drawing direction of the cloth piece, and has the effect of wrinkling the cloth piece.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sheet unfolding apparatus according to an embodiment of the present invention; FIG. First, the description of the entire developing device and the sheet blowing nozzle mechanism will be described with reference to FIGS. 1 to 6 mainly on a mounting table provided with a suction duct, and then a belt stop / stop unit which is a sheet side edge alignment mechanism on the mounting table. 7 to 9, the laterally moving suction conveyor mechanism provided in the sheet taking-in section is shown in FIGS.
3 will be described in order. Note that the names of each corner and each edge of the sheet 15 are the same as those shown in FIG. Edge Y Well comprise any angular end C ₁ of the sheets 15 manually in FIGS. 1 to 6, the corner edge C ₁
a is gripped by two clips 17 attached to the gripper 16 at a distance of the shoulder width. The gripper 16 travels in the guide rail 25 by the four wheels 18, and engages the chain 26 with a rack provided at the top,
It can be driven via the chain 26 by a chain driving means (not shown). Further, the gripper 16 can be disengaged from the chain 26 and can freely travel on an inclined guide rail. On the other hand, the arm on which the gripper 16 supports the clip 17 is the arm ₁ on the corner end C1 side.
6a is longer and the arm 16b on the edge Ya side is shorter. The reason for this is that when the sheets 15 gripped by the gripper 16 hang down naturally, the arm 16b side is larger than the load applied to the two clips 17 when compared. The holding tool 16 with the sheet 15 suspended thereon is driven by the chain 26 to move on the guide rail 25,
From above in the direction of the deployment device. The sheet 15 is pulled on the mounting table 35 while being spread by the convex front edge portion 36. Further, the gripper 16 advances on the mounting table 35, and
The sheet 15 is released by the clip grip release mechanism 27 at the position where the side edge portion Yb has finished riding on the mounting table 35. That is, in the clip grip release mechanism 27, the pneumatic actuator 28 operates, the lever 29 rotates, and the push plate 30 pushes the release arm 17a of the clip 17, and releases the sheets as described above.

FIG. 2 is a perspective view showing the structure of the mounting table 35. A plurality of flat belts 46 hung on a pulley 40 intermittently driven by motors 45 supported by frames 38, 39 on both sides. , The main part of the mounting table 35. The flat belt 46 may be a belt having a large number of small holes formed on the entire surface, or a net belt of a coarse mesh that allows easy passage of air. The center of the mounting table 35 may be a non-perforated belt. A suction duct 47 is attached to the inner surface of the flat belt 46 over the entire width of the mounting table 35, and the duct 47 has a number of small holes 48 formed on the upper surface, that is, the surface in contact with the flat belt 46. . In addition, corresponding to the flat belt 46 described above, the small hole 48 may not be provided at the center of the suction duct 47. On the other hand, a photoelectric sensor 49 is mounted above the frame 38,
Reference numeral 9 denotes a sensor for detecting the passage of the gripper 16 and the passage of the end edge Yc of the sheet 15. The signal emitted from the sensor 49 is sent to the control device 50 to be processed.

FIG. 3 is a plan view of the mounting table 35, showing the relation between the position of the sheet 15 drawn and placed and the group of suction holes 48 of the suction duct 47. As shown in FIG. The area where the suction works is half of the track surface of the sheet 15 pulled in and the side edge Yb of the sheet 15
This is a portion indicated by E and F which is divided before and after in the traveling direction of the sheet 15 on the side. In addition, the range in which suction works can be set to the entire length of the raceway surface, but in this case, the drawing resistance of the sheet 15 becomes excessive. The suction duct 47 is a pipe 56
Connected to the suction blower 55.

Next, the structure of the sheet blowing nozzle mechanism will be described with reference to FIGS. The concave front edge portion 101 is attached to the frame 38 following the convex front edge portion 36 of the cloth piece taking-in portion of the mounting table 35, and the nozzle housing 102 of the frame 38 is aligned with the concave center line of the concave front edge portion 101. Mounted on top. The upper surface of the nozzle housing 102 is flush with the upper surface of the mounting table 35, and the upper surface of the nozzle housing 102 is provided with a plurality of nozzle holes 103 that blow obliquely in the moving direction of the sheets 15. Air is sent to the nozzle housing 102 from an air source (not shown) through an air supply pipe 104. Further, the tail-shaped corner end of the sheet 15 blown up by the air blown out from the nozzle hole 103 is attached to the mounting table 35.
There is provided a guide plate 105 for guiding the upper part to be surely turned upside down and placed on a predetermined position. In addition, if the guide box 110 is provided below the concave front edge portion 101, when the tail-like portion of the long and large sheet 15 is moved,
The movement can be regulated, and there is an effect that stability is increased.

FIG. 4 is a side sectional view of the developing device. Here, the structure of the entire sheet unfolding mechanism of the sheet 15 will be described with reference to FIGS. 1 and 4. A roller 58 is provided at an outlet of a conveyor composed of the flat belt 46 of the mounting table 35.
8 rotates about the shaft 59 by the operation of the pneumatic actuator 60, and can apply pressure to and release from the flat belt 46. A vacuum air spreader 65 is attached to the frames 38 and 39. The air spreader 65 is provided with a downwardly convex spread plate 65a at the front edge thereof, and the sheets 15 are sucked by a downward suction slit 65b. The effect of the spreading plate 65a of the first embodiment is sufficiently exerted. The air spreader 65 is also connected to the suction blower 67 by a pipe 66. On the other hand, a friction roller 6 driven by the same motor 70 is provided below the mounting table 35.
8 and a delivery conveyor 6 for sheets 15 running diagonally downward.
9 are provided. Reference numeral 76 denotes a take-up bar guided by a guide 75 attached to the frames 38 and 39. The take-up bar 76 is intermittently driven by a not-shown chain, and connects one place of the chain and the take-up bar 76 (not shown). The link mechanism reciprocates guided by the guide 75.

[0018] now be described in the action for the embodiment constructed as described above, sheets 15 square end C ₁ and the edge Ya
Is gripped by the clip 17 of the gripper 16 and the mounting table 35
When the upper side is pulled in while applying contact resistance at the convex front edge portion 36, if no suction force is applied,
The side edge portion Yb of the sheet 15 is pushed by another portion of the sheet 15, and the entire shape of the sheet 15 is widened.
However, by providing the suction duct 47 as in the present invention, the side edge portion Yb of the sheet 15 is sucked at the portion E shown in FIG.
The pulling force of the side edge Yb of the sheet 15 increases, and the sheet 1
The other portion 5 is pushed back so that the side edge Yb can be pulled straight and always in tension. F on the mounting table 35
When the sheet 15 is released from the clip 17 of the gripper 16 and is placed on the mounting table 35, the suction portion indicated by is effective in maintaining the state where the side edge portion Yb is kept tight. If there is no suction portion F, the side edge Yb of the sheet 15
Is shrunk simultaneously with the release from the clip 17 and wrinkles are likely to occur.

When the sheet 15 is gripped by the clip 17 of the gripper 16 and enters the mounting table 35, the photoelectric sensor 49
Detects the end Yc of the gripper 16 and the sheet 15 and sends a signal to the control device 50. In the controller 50, the passage timing of the end Yc of the gripper 16 and the sheet 15 and
The centering timing of the sheet 15 with respect to the mounting table 35 is calculated from the transfer speed of the gripper 16, the pneumatic actuator 28 is operated, and the clip grip release mechanism 27 is operated to release the sheet 15. Also, when the sheet 15 is in a long rectangular shape, if the sheet 15 is wet when the sheet 15 is pulled on the mounting table 35, the weight of the sheet 15 is large. Rim 10
It remains in a tail like a lump. However, when the sheets 15 pass through the concave front edge portion 101, the sheets 15 are gathered and pushed up by the air blown out from the nozzle holes 103, so that the sheets 15 in the vicinity of the sheets 15 are lifted, and the frictional resistance of the sheets 15 against pulling is reduced. On the other hand, since the corner of the remaining sheet 15 has a small area and is light, it is blown up by the air blown out from the nozzle hole 103 in the direction shown by the arrow in FIG. 6 and guided by the guide plate 105, and is shown by the broken line in FIG. ', It can be inverted and placed at a predetermined position on the mounting table 35. Therefore, the corner end of the sheet 15 is caught or entangled in the guide rail of the frame or the gripper 16 and the next sheet 15
There is no problem that hinders the feeding process.

The sheets 15 placed on the mounting table 35
Is moved in the direction of arrow C by the flat belt 46 driven by the motor 45, and stops at the position where the side edge Yb reaches the position before the roller 58. The other part of the sheet 15 hangs down freely from the end of the flat belt 46 (the position of the sheet 15 indicated by a two-dot chain line in FIG. 4). Next, when the take-in bar 76 is operated and the sheet 15 is sent out with the friction roller 68 and is pushed onto the conveyor 69 (the sheet 1 shown by a broken line in FIG. 4).
(Position 5), the sheet 15 is sent out to the ironer 80 in the next step by the delivery conveyor 69 while being spread by the air spreader 65 and the friction roller 68. In addition,
Although the development of the rectangular cloth has been described in the embodiment of the present invention,
It can be applied to a square cloth without any problem. In the present embodiment was described using an example for gripping the edges Ya comprise any angular end C ₁ and the corner end C ₁ of the sheets 15, the long side part of the edge of the (for example, FIG. 19 It is held portions) of the C ₁ and Yb 'equally applicable. In this case, the edge of the short side of the sheet 15 (the edge indicated by the symbol Ya in FIG. 19) is framed.

Next, a description will be given of an embodiment of a sheet-side edge aligning and mounting table constructed by arranging belt moving / stopping units sideways according to the present invention with reference to FIGS. 7 is a cross-sectional view of the belt moving / stopping unit 180, FIG. 8 is a perspective view of the belt moving / stopping unit 180 attached to the mounting table 35, and FIG. In the figure, a number of belt stop /
Are mounted side by side on a horizontal beam 195 fixed to the main body frame 38 via a column member 196. Fixed shaft 182 fixed to a unit base 181 fixed to a horizontal beam 195
, An operating lever 183 is rotatably fitted. A pair of tension pulleys 184 is rotatable on a shaft 185 that is fixed to the operating lever 183 and protrudes on both sides of the lever 183, and a pair of brake rollers 190 is also rotatable on a shaft 186 that is similarly fixed and protrudes on both sides. Is fitted. The tension pulley 184 and the brake roller 1
90 has the function of simultaneously driving and stopping the two conveyor belts 46. A pneumatic actuator 187 is rotatably connected to the unit base 181 with a pin.
The end of 83 is pin-connected to the operating rod of the pneumatic actuator 187. 7 where the operating rod of the pneumatic actuator 187 protrudes, the brake roller 190 rises, the tension pulley 184 descends to apply tension to the conveyor belt 46, and the rotation of the drive roller 40 is transmitted to the conveyor belt 46, and the conveyor belt 46 is rotated. This shows a state in which the belt 46 is being fed. When the operating rod of the pneumatic actuator 187 is retracted, as shown by the two-dot chain line, the tension pulley 184
The conveyor belt 46 loses tension, the conveyor belt 46 loosens, and the brake roller 190
Presses the conveyor belt 46 and applies it to the brake plate 191.
, The brake is applied and the vehicle is stopped.

A photoelectric sensor 188 also serving as a light source is attached to a horizontal beam 195 above the unit base 181, and a gap between a pair of conveyor belts 46 on the upper surface of a suction duct 47 installed below the conveyor belt 46. A reflection plate 189 that reflects the light source of the photoelectric sensor 188 is attached to the position. The belt 46 travels by the photoelectric sensor 188 and the reflection plate 189, and the sheet 1 conveyed by the belt 46 travels.
5 is detected. In addition, a control circuit (not shown) receives a detection signal indicating the presence or absence of the sheet 15 generated by the photoelectric sensor 188 for each unit, and issues a command to the pneumatic actuator 187 as appropriate.

Next, the operation of the embodiment of the sheet side edge aligning and mounting table constituted by the belt moving / stopping unit 180 will be described. After the sheet 15 is pulled into the mounting table 35 (the sheet indicated by a solid line in FIG. 9). 15 indicates a position immediately after being retracted), and the conveyor belt 46 is driven to
When the sheet is sent to the next step, the presence or absence of the sheet 15 is determined by the photoelectric sensor 18 provided in each belt operation / stop unit 180.
8 and the reflection plate 189, the sheet passes and the sheet 1
When a signal of no 5 is issued and sent to the control circuit, the control circuit operates the pneumatic actuator 187, releases the tension pulley 184 from the conveyor belt 46, loosens the tension of the conveyor belt 46, applies a brake, and stops this. (The sheet 15 indicated by a two-dot chain line in FIG. 9 indicates a position stopped immediately after the reflecting plate 189 by each belt moving / stopping unit 180). Further, when all the side edges of the sheets 15 are aligned at the predetermined positions on the conveyor belt 46, and the signals from the sensors 188 of all the belt moving / stopping units 180 are out of cloth, a command of the control circuit is issued, and the brakes are simultaneously applied. Release and move all conveyor belts 46 to feed sheets 15. In operation, the sheets 15 sent by the conveyor belt 46 for the longest distance (for example, the sheets 15 sent by the leftmost two rows of conveyor belts 46 in FIG. 9) are separated by the photoelectric sensor 188 and the reflection plate 189. When it is detected, a command is issued to move the conveyor belt 46 all at once immediately before the brake is applied, so that the conveyor belt hardly stops.

Next, FIGS. 10 to 13 show an embodiment of a cloth side edge aligning mechanism using a suction belt provided at a lower portion of a convex front edge portion and driven in a direction perpendicular to a sheet drawing direction according to the present invention. First, the structure of the suction belt conveyor unit 211 will be described with reference to the perspective views of FIGS. Suction belt conveyor unit 211
Is attached to the frame 38 below the convex front edge portion 36 which is a sheet taking-in portion. A suction belt 212 having a large number of suction holes, which is a main component of the suction belt conveyor unit 211, is guided by three edged pulleys 215, 216, and 217, and is convex by a vertical pulley 216 at a convex front edge. The vehicle travels horizontally with the vertical side surface following the mold. The suction belt 212 is driven by a motor 220 via a longitudinal pulley 217, a driven pulley 218 fixed to the shaft of the pulley 217, and a drive belt 219. The vertical pulley 21
A suction duct 213 is formed integrally with the frame supporting the shafts 5, 216, 217. The suction duct 213 is housed inside the suction belt 212, and a large number of suction ducts 213 are provided on the surface of the suction belt 212 that contacts the convex vertical surface. The long hole is open. Also the suction duct 21
The air in 3 is discharged by a suction blower (not shown) through a discharge pipe 214 attached to a lower part of the suction duct 213.

The photoelectric sensors 134 and 136 serving also as light sources attached to the fixing member are provided on both sides of the sheet side guide wire of the sheet guide plate 111 on the frame 38 and are combined with the reflection plates 135 and 137. It is detected whether the side edge of the sheet 15 is within the allowable width along the correct sheet drop-in line. The control circuit (not shown) is a photoelectric sensor 13
4,136, the deviation of the sheet side edge is detected,
By instructing the motor 205 to rotate forward or reverse and stop, the position where the side edge of the cloth piece passes is corrected. The transformed sheet 15 is
The corner of the sheet 15 gripped by the gripper 16 is an acute angle,
In most cases, the side edge parts of the sheet to be retracted are shifted inward from the correct drop line, so that the photoelectric sensor can be formed into a width even if only the combination of the inner photoelectric sensor 136 and the reflection plate 137 is used. The purpose of the assembling can be fulfilled to a considerable extent.

A first example of the operation of the sheet side edge aligning mechanism using the suction belt conveyor unit 211 will be described with reference to FIG. 12. FIG. 12 shows a case where only one set of the photoelectric sensor 136 and the reflector 137 is used. This is an example. In a process in which the sheet 15 is gripped by the gripping tool 16 and is pulled over the sheet guide plate 111 and the mounting table 35, the light source beam of the photoelectric sensor 136 is applied to the sheet guide plate 1
It is applied to a reflector 137 provided on the sheet 11 to detect whether or not the sheet side edge portion during the retraction movement deviates inward from the correct allowable retraction width. That is, when the photoelectric sensor 136 detects the reflected light from the reflection plate 137, the sheet 15 is shifted inward as shown by the dotted line in FIG. The sheet 15 is sucked onto the suction belt 212 so as to move along the line outward in the direction of the arrow. During the lateral movement, if the sheet side edge enters the correct retraction allowable width line, the light source beam of the photoelectric sensor 136 is blocked, the photoelectric sensor 136 detects the presence of the sheet 15, and the signal of the suction belt 212 is transferred by the signal. Stop.

FIG. 13 shows a second example of the operation in the case of combining two detection sensors, namely, the photoelectric sensors 134 and 136 and the reflection plates 135 and 137. Sheet 15 is gripper 1
6, the photoelectric sensors 134 and 136 are pulled in the sheet guide plate 111 and the mounting table 35.
And a reflecting plate 135 provided on the sheet guide plate 111.
With 137, it is detected on which side of the sheet side during the retraction movement the inner side and the outer side deviate from the correct allowable retraction width. That is, if both the photoelectric sensors 134 and 136 detect the sheet 15, the sheet 15 is too far outside as shown by a two-dot chain line in FIG. The sheet 15 is sucked onto the suction belt 212 and moved inward (in the direction of the downward arrow in FIG. 13) so as to move along the suction line 212 so as to follow the correct drop line. During this lateral movement, if the sheet side edge enters the correct allowable pull-in width line, the photoelectric sensor 134 detects the absence of the sheet 15, and stops the transfer of the suction belt 212 based on the signal. When both the photoelectric sensors 134 and 136 do not detect the sheet 15, the sheet 15 is too inward as shown by the dotted line in FIG. 13, and the control circuit operates by the signal to cause the sheet side edge to move. The sheet 15 is sucked to the suction belt 212 and moved laterally outward (in the direction of the upward arrow in FIG. 13) so as to follow the correct lead-in line. Then, when the sheet side edge portion falls within the correct pull-in allowable width line, the photoelectric sensor 136 detects the presence of the sheet 15 and stops the transfer of the suction belt 212 based on the signal. The suction force of the suction belt 212 is the convex front edge 3
6, the ironing of the sheet 15 is strengthened, the linearity of the sheet 15 in the drawing direction is improved, and the cloth sheet 15 is also wrinkled.

[0028]

As described above in detail, according to the present invention, the side edge of the rectangular cloth piece can be pulled straight in the pulling direction with a simple and inexpensive device. In addition, the step of realigning the side edges of the cloth pieces is not required, and the cycle of the cloth piece development step can be shortened. Furthermore, the side edge of the piece of cloth can be held straight while being in a taut state. As a result, generation of wrinkles is eliminated, and the finishing quality of the cloth piece in the irona, which is a subsequent process, is improved. Further, even when a rectangular cloth piece having a large diagonal length is drawn into the mounting table, the frictional resistance of the cloth piece is reduced due to the pushing force from the air blowing nozzle provided near the concave front edge, and the gripping tool is reduced. Can reduce the pulling power. In addition, the tail end of the piece of cloth that protrudes from the mounting table can be blown to a predetermined position on the mounting table by the air blowing nozzle, and it is not necessary to increase the width of the mounting table. it can.

When the piece of cloth is deformed, the side edge of the piece of cloth remains slanted by merely applying pulling resistance to the piece of cloth with the suction duct that constitutes the mounting table. Although it is not aligned with the line at right angles to the line, if a tensioning pulley for a conveyor belt and a belt moving stop unit composed of a brake and a cloth sensor are arranged side by side, a cloth side edge alignment mounting table is applied, Since the side edge of the cloth piece can be directly aligned in the direction perpendicular to the conveyor feeding direction and is directly fed by the conveyor belt, it is possible to reliably hold the side edge of the cloth piece in the next step for spreading the cloth piece. Further, there is no time loss for adjustment since the positioning work is performed in the feeding process by the conveyor belt. Also, at the beginning of the retraction, the side edge of the cloth piece is corrected to the correct drawing line by a cloth side edge alignment mechanism using a suction belt that is driven in a direction perpendicular to the cloth leading direction provided on the convex front edge and the mounting table. Therefore, the direction in which the side edge of the cloth piece on the mounting table is drawn becomes more accurate. The suction belt also has the effect of smoothing out wrinkles on the cloth pieces.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of the cloth table in FIG. 1;

FIG. 3 is a plan view of the cloth piece mounting table in FIG. 2;

FIG. 4 is a side sectional view of the cloth spreading device in FIG. 1;

FIG. 5 is a perspective view of a nozzle mechanism for blowing a corner of a cloth piece according to the embodiment of the present invention.

FIG. 6 is a front sectional view of the nozzle mechanism in FIG. 5;

FIG. 7 is a side cross-sectional view of a side-to-side edge aligning mounting table with a belt moving / stopping unit according to an embodiment of the present invention.

FIG. 8 is a perspective view of a belt arresting unit of the cloth side edge aligning and mounting table of FIG. 7;

FIG. 9 is a plan view for explaining the operation of the cloth side edge alignment mounting table of FIG. 7;

FIG. 10 is a perspective view of a cloth side edge aligning mechanism using a suction conveyor according to an embodiment of the present invention.

FIG. 11 is a perspective view showing a detailed structure of the suction conveyor of FIG. 10;

12 is a flow development plan view of a cloth piece showing a first example of the operation of the cloth piece side edge alignment mechanism of FIG. 10;

13 is a flow development plan view of a cloth piece showing a second example of the operation of the cloth piece side edge alignment mechanism of FIG.

FIG. 14 is a perspective view showing a conventional rectangular cloth piece framing device.

FIG. 15 is a plan view of FIG.

FIG. 16 is a sectional view taken along line AA of FIG. 14;

FIG. 17 is a perspective view of a main part in FIG. 14;

18 is a perspective view of a main part of FIG. 14 which is different from FIG. 17 in an operation state.

FIG. 19 is a development view of a rectangular cloth piece processed by the rectangular cloth piece framing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 15 sheets 16 gripper 17 clip 25 guide rail 27 clip grip release mechanism 35 mounting table 36 convex front edge 46 flat belt 47 suction duct 49 photoelectric sensor 50 control device 101 concave front edge 102 nozzle housing 103 nozzle 104 air supply pipe 105 Guide plate 110 Guide box 134 Photoelectric sensor 136 Photoelectric sensor 180 Belt stop / stop unit 181 Unit base 182 Fixed shaft 183 Operating lever 184 Tension pulley 187 Pneumatic actuator 188 Photoelectric sensor 190 Brake roller 211 Suction belt conveyor unit 212 Suction belt 213 Suction duct 220 Servo motor with brake

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor, Koharu Fujihashi No. 1, Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi, Nagoya Equipment Works, Ltd. (72) Inventor, Kazuo Kitajima, Iwatsuka-cho, Iwazuka-cho, Nagoya Road No. 1, Mitsuishi Heavy Industries, Ltd., Nagoya Research Laboratory (72) Inventor Toshio Hattori, Nagoya City, Nakamura-ku Iwazuka-cho, Takamichi 1 Mitsuishi Heavy Industries, Ltd. Nagoya Research Laboratories (72) Inventor, Hiroyuki Asaoka, Nagoya-shi Nagoya Kiki Seisakusho, No. 1 Takamichi, Mitsuhishi Heavy Industries, Ltd. (56) References JP-A-4-9198 (JP, A) Jpn.

Claims (8)

(57) [Claims] 1. An arbitrary corner end of a rectangular cloth piece and one of the sides including the corner end are gripped by a movable holding tool to which two clips are attached, and the cloth piece is naturally suspended. After the lowering, the upper surface of the mounting table constituted by a belt conveyor or the like is horizontally pulled by a gripper while the cloth piece is in resistance contact with the convex front edge of the mounting table, and the cloth piece is drawn onto the mounting table. A suction duct having a large number of suction holes is provided on a half surface of a cloth pulling track surface of the mounting table on a cloth edge side. 2. An apparatus for unfolding a rectangular cloth piece according to claim 1, wherein the edge portion connected to a corner end gripped by the cloth piece gripping tool is located above and near the entrance of the cloth piece taking-in portion of the mounting table. The centering timing of the edge of the cloth is determined based on the detection sensor that detects the end of the cloth when passing, and the timing of the movement of the gripper and the passage of the gripper and the cloth end in response to the signal transmitted by the sensor. And a control device for calculating and operating a grip release mechanism of the clip of the gripper. 3. The apparatus for unfolding a rectangular cloth piece according to claim 1, wherein the development side of the cloth piece placed on the end of the conveyor that runs in a horizontal direction perpendicular to the pulling direction of the cloth piece serving as the mounting table is pressed. A downwardly convex type that moves in the direction opposite to the roller and the development side and the development side of the cloth piece is sandwiched between the conveyor end and the pressing roller, and then suctions the central portion of the cloth piece hanging from the mounting table conveyor end. A slit provided with a developing plate, a take-up bar for pushing the upper portion of the hanging cloth piece onto a developing and feeding conveyor provided at a lower stage of the mounting table, and a friction roller provided at a front portion of the developing and feeding conveyor. An apparatus for developing a rectangular cloth piece, comprising: 4. The apparatus for unfolding a rectangular cloth piece according to claim 1, wherein a concave front edge portion following the convex front edge portion of the cloth piece taking-in portion of the mounting table, and a concave center line of the concave front edge portion. A nozzle case having a plurality of nozzle holes that are attached to the frame in accordance with the above, and whose upper surface is flush with the upper surface of the mounting table described above, and that has a plurality of nozzle holes that blow out obliquely in the moving direction of the cloth piece, A rectangular cloth piece comprising: an air source to be sent; and a guide plate for guiding a tail-shaped corner end of the cloth piece blown up by the air blown out from the nozzle hole to a predetermined position on a mounting table. Deployment device. 5. The apparatus for unfolding a rectangular cloth piece according to claim 1, further comprising: a unit base attached to a fixing member above the cloth mounting table; and an operating lever rotating on a fixed axis of the unit base. A brake roller that is installed on the operating lever and has a function of simultaneously driving and stopping one or more conveyor belts, a pneumatic actuator that operates the operating lever, and a cloth drawn in a direction perpendicular to the traveling direction of the conveyor belt. A cloth piece mounting table having a structure in which a belt moving / stopping unit constituted by a sensor for detecting a side edge of a piece is arranged, and a command to the pneumatic actuator by a cloth piece detection signal generated by the sensor for each belt moving / stopping unit. When the conveyor belt starts running, a sensor emits for each of the belt arresting and stopping units when a cloth piece is placed on the mounting table. An apparatus for controlling the attitude of a piece of cloth by applying a brake to and stopping one or more conveyor belts in response to the cloth piece passage detection signal. 6. A rectangular cloth piece spreading device according to claim 5, wherein a concave front edge portion following the convex front edge portion of the cloth piece taking-in portion of the mounting table, and a concave center line of the concave front edge portion. A nozzle case having a plurality of nozzle holes that are attached to the frame in accordance with the above, and whose upper surface is flush with the upper surface of the mounting table described above, and that has a plurality of nozzle holes that blow out obliquely in the moving direction of the cloth piece, A rectangular cloth piece comprising: an air source to be sent; and a guide plate for guiding a tail-shaped corner end of the cloth piece blown up by the air blown out from the nozzle hole to a predetermined position on a mounting table. Deployment device. 7. An apparatus for unfolding a rectangular cloth piece according to claim 5, which is provided at a lower portion of a convex front edge part as a cloth piece taking-in part, guided by a vertical pulley, A suction belt that has a number of suction holes that run horizontally while forming a vertical side that follows the convex shape, and a suction that is housed inside the suction belt and that has an open surface that contacts the convex vertical surface of the suction belt. A duct, a discharge pipe for discharging air from the suction duct, and a suction blower,
A motor for driving the suction belt, a cloth detection sensor provided on a horizontal surface of the cloth take-in section along a cloth side edge lead-in line, and detecting a deviation of the cloth side edge by a signal from the cloth detection sensor. And a control circuit for instructing the motor to rotate forward or reverse and stop and correct the position where the side edge of the cloth piece passes is added. Deployment device. 8. A rectangular cloth piece spreading device according to claim 7, wherein a concave front edge portion following the convex front edge portion of the cloth piece taking-in portion of the mounting table, and a concave center line of the concave front edge portion. A nozzle case having a plurality of nozzle holes that are attached to the frame in accordance with the above, and whose upper surface is flush with the upper surface of the mounting table described above, and that has a plurality of nozzle holes that blow out obliquely in the moving direction of the cloth piece, A rectangular cloth piece comprising: an air source to be sent; and a guide plate for guiding a tail-shaped corner end of the cloth piece blown up by the air blown out from the nozzle hole to a predetermined position on a mounting table. Deployment device.