JPH03159682A - Transporting apparatus of sheet material - Google Patents

Abstract

PURPOSE:To shorten the transporting time of a sheet material by providing a contacting means whereby the sheet material is brought into contact with a transporting means at least at two points or more on its hem side and is transported by pushing along a transporting line, and a detecting means thereof, and a sheet material-holding means. CONSTITUTION:A first transporting apparatus 9 is composed as follows. That is to say, the rear hem on a cuff C is pushed by transporting-pins 72, 58 located in a straight line and the cuff C is transported. The laid state of the cuff Ci s confirmed by both a light-emitting element 60 and a light-receiving element 64 which are located at the middle between the transporting pins 72, 72. The cuff C is held between a presser plate 74 and a clamping base and is kept in this held state as far as a first derivery position P1. For this reason, the cuff C is naturally arranged on the way of its transportation and in this state, it is transported to the position P1, and hence the cuff C is wrought at a correct position, with an overlock sewing machine 7 for buttonholes. On the other hand, since a special time for its arrangement is not required and the cuff is transported in the held state, the transportation at a high speed is made possible.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention (a method for transporting a sheet material introduced into a conveyance path to the next step by a conveying means that is moved along the conveyance path) The present invention relates to a conveyance device that conveys to a delivery position.

[Prior Art 1] Conventionally, a sewing system has been proposed in a sewing factory etc. that continuously performs overlocking and attaching button holes of cuffs of shirts.
There is No. 4.

In order to carry out such continuous processing, a conveyance device is required to convey the cufflinks to an accurate processing position, and in the sewing system described in the above-mentioned publication, the cufflinks are placed on an endless belt and conveyed. An engagement pin is projected from below the belt, and the cuffs are brought into contact with the engagement pins to stop the belt at the processing position and to align the front edges of the cuffs.

[Problems to be Solved by the Invention] However, even when the cuffs are stopped, the belt continues to drive. Therefore, if the driving speed of the belt is increased, that is, if the driving force is increased, there is a risk that the cuffs, which have been carefully aligned, may become misaligned.Also, since the state of contact between the belt and the cuffs depends solely on the weight of the cuffs, The driving force acting on the motor tends to become unbalanced. Furthermore, during transportation, the cuffs will be carried while being misaligned with respect to the alignment direction, so if an unbalanced force due to a large driving force is applied, the misalignment will become even greater, and there is a risk that alignment may become impossible. The drive speed of the belt needs to be low, making it difficult to shorten the conveyance time.

On the other hand, conveyance devices have been proposed in which the cuffs are pushed and stopped at a processing position using a pressing member such as a pin without using a belt.
There is No.-125289.

However, even in these devices, if the pressing member is moved quickly, there is a risk that the cuffs will be blown off in the conveying direction due to inertia during sudden deceleration near the stop position. For this reason, it is difficult to shorten the transport time even with these push-and-transfer devices.Therefore, devices that grip and transport the cuffs have been considered, but There is a problem in that it is necessary to align the cuffs in the middle of the conveyance route, and a separate alignment member must be provided for this purpose, making the device bulky. is similar to this, but as described in this publication, it is complicated, such as requiring control to move the engagement pins in and out just for alignment, and requires special time for alignment. did. Therefore, it was still not possible to shorten the transportation time.

The sheet material conveying device of the present invention solves these problems, shortens the conveyance time of the sheet materials without increasing the size of the entire device, and receives the sheet materials in an aligned state at the delivery position to the next process. It is intended to be passed on.

[Means for Solving the Problems] The sheet material conveying device of the present invention {the sheet material introduced into the conveying path is transported to the next process by a conveying means that is moved along the conveying path. In the conveyance device that conveys the conveyance device to the delivery position, the conveyance stage (the top of the conveyance stage) makes contact with the side surface of the edge of the sheet material at at least two points, and as the conveyance means moves, the sheet material in contact with the sheet material is moved along the conveyance path. a contact means for pushing; a detection means for detecting whether or not the contact means and the edge of the sheet material are in contact at at least two points; and when a contact state is detected by the nucleus detection means. , a gripping means that grips the sheet material and continues to grip the sheet material until the conveyance means reaches the delivery position.

[Function] In the sheet material conveying device of the present invention, the sheet material is pushed by the abutting means. During this pushing motion,
Since the contact member contacts the side surface of the edge of the sheet material at two or more points, the sheet material becomes aligned during this transportation. Detection means (friend) Detects whether the contact means and the sheet material are in contact at two or more points. That is, it detects whether the sheet materials are aligned. This detection means detects the contact state, that is, the alignment. When the state is detected, the gripping means grips the sheet material.Here, since the conveyance means is configured to include all of the abutment means, the detection means, and the gripping means, the conveyance means is used for these series of operations. There is no need to stop the vehicle; everything is carried out while the conveyance vehicle is in motion.

Then, since the gripping means (and conveyance means) continue to grip the sheet material until it reaches the delivery position to the next process, the sheet material (
They are not blown away by inertia, and are delivered to the next process while maintaining their alignment at the delivery location.

[Example] Next, an example in which the present invention is applied to a continuous sewing processing system that performs overstitching of buttonholes of cuffs and button attachment will be described in detail with reference to the drawings.

FIG. 1 shows the entire sewing system 1.

Sewing processing system 1 (top) A conveyance table 3 forming a conveyance path L for cufflinks C, and an unfinished product stocker installed at one end of the conveyance table 3 and storing unfinished cufflinks C that have not been attached with buttons or the like. -5, a first conveyance device 9 that conveys the cufflinks C sent out from the unfinished product stocker 5 on the conveyance table 3 to a first delivery position P1 near the buttonhole overlock sewing machine 7, and this first delivery A first transfer device 11 transfers the cufflinks C to the processing position of the buttonhole overlock sewing machine 7 at position P1, and a second transfer position near the buttonhole sewing machine 13 to transfer the cufflinks C that have been oversewn from the first delivery position P1 to the buttonhole sewing machine 13. Second transport device 15 transporting to P2
and a second transfer device 17 that transfers the cufflinks C to the processing position of the button sewing machine 13 at the second transfer position P2.
and a finished product stocker 19 which is provided on the terminal end side of the conveyor table 3 and stores the cufflinks C which have been overstitched with buttonholes and buttoned.

On the transport platform 31, five narrow boards 3a and one wide board 3
b are arranged parallel to each other so as to form a gap 3C of a predetermined width along the transport path LI:.

Unfinished stocker 5 (top) For example, JP-A-63-125
The structure is similar to that described in Publication No. 289, and by sending out the lowest layer of a plurality of cufflinks C stacked inside through the narrow opening 5a, the cufflinks C are delivered to the introduction position PO of the transport platform 3. This introduces cufflinks C.

Buttonhole overlock sewing machine 7 and button sewing machine 1
31 is commonly used in such sewing processing systems.

In addition, the first and second transfer devices 11 and 171t, rods 1la and 1 that go in and out in the direction across the conveyance table 3, respectively.
7a, this rod lla, bracket llb attached to the tip of 17a, 17b, and this bracket ll
Pickup llc, 1 arranged on the bottom surface of a, 17a
7c. Pickup llc, 17c (@
This is a normal suction type that suctions and releases the cuff C by supplying and discharging air.

The finished stock stocker 19 is manufactured by, for example, Japanese Patent Application Laid-Open No. 63-2640.
It has the same configuration as that described in Publication No. 94, and includes a capture pin 19a that captures the cuff C that has been overstitched and buttoned, and a newly captured cuff C.
A push-up member 19b that takes in and pushes up the cuffs C together with the stacked cuffs C, and a comb-like scooping member 19c that scoops up these pushed-up cuffs C from below, and the push-up member 19b and the scooping member 19c are interlocked. As the cufflinks C are moved, the finished cufflinks C are stacked one after another so that the new ones are on the bottom side.

The first and second conveyance devices 9, 151 & have substantially the same configuration, and the first conveyance device 9 will be explained below based on FIGS. 2 to 4.

The first conveying device 9 (the lower side of the wide plate 3b of the conveying table 3) has two rod-less moving air cylinders 22 that move the movable block 20 along the conveying route and one direction.
, a planar rLJ-shaped L arm 24 attached to the moving block 20, and a pushing member 26 that is attached to the L arm 24 so as to be movable up and down and retracts from the upper surface of the carrier 3. .

The moving air cylinder 22 (as shown in FIGS. 2 and 3, the cylinder shaft 32 and two sliding cylinders are disposed between the frames 28 and 30, which are disposed a predetermined distance apart in the direction of the conveyance path. A piston 36 is fitted into the cylinder shaft 32 and divides the inside of the chamber into a left chamber 32Q and a right chamber 32r. Moves along the transport path L direction.Movement block 20
2 and sliding rod 34, and is made of iron. The piston 36 is made of a magnetic material, and the magnetic force of this magnetic portion causes the moving block 20 made of iron to move along with the movement of the piston 36 itself.

An adjustment screw base 40 with an adjustment screw 38 screwed thereon is fixed to the right end of the L arm 24 in the drawing. An absorber stand 44 with an absorber 42 attached thereto is arranged.

The adjustment screw 38 is used to adjust the stop position of the moving block 20 by adjusting its protrusion amount. The absorber 42 is for attenuating the collision force at the stop position when the moving block 20 moves at high speed to the right in the figure.

The pushing member 26 is disposed with the vertical air cylinder 46 disposed on the lower surface of the arm 24a, which extends in the direction across the conveying path L of the arm 24, at approximately the center thereof. It includes a base 50 that moves up and down along a sliding shaft 48, and a clamp member 52 that moves up and down with respect to the base 5o.

The base 501L has five arms 50a to 50e corresponding to the five gaps 3C of the conveyor table 3, and has a comb-like shape in a plane. The three outer first and fifth arms 50a, 50e and the slightly wider third arm 50c at the center have the same length and are longer than the second and fourth arms 50b, 50d. .

A rectangular parallelepiped-shaped clamp receiver 54 is provided on the upper surface of the tip of the first and third arms 50a and 50e.

The second clamp receiver 54 is for holding the cuff C together with a clamp member 52 described later, and has a chamfered right end side in the top view so that it can easily fit under the cuff C.

Further, a rectangular parallelepiped block 56 is disposed on the upper surface of the tip of the second and fourth arms 50b and 50d, and a pressing pin 58 is further provided protruding from the center of the upper surface.

Note that the tip of the pressing pin 58 is connected to the aforementioned clamp receiver 54.
It is said to have a length that protrudes upwards.

Further, on the upper surface of the third arm 50C, a transfer pin 58-
58 (orthogonal to the direction of the transport path L), and a light receiver protrudes from the upper surface of the third arm 50c on the left side of the projector 60 in the figure. A light receiver 64 overhanging from the upper end of the table 62 is disposed facing downward to face the projector 60. Note that the upper surface of the light emitter 60 is at a height lower than the upper surface of the clamp receiver 54, while the light receiver 6
4 is a height that is larger than the thickness of the cuff C with respect to the clamp receiver 54. In this embodiment, the apex of the receiver stand 62 is the highest point of the conveying device 9, and the receiver 64 is at almost the highest height. positioned.

The clamp receivers 54 and transfer pins 58 on each of these arms 50a to 50e, as well as the projector 6o, receiver stand 62, etc.
The width is set so that it can pass through the gap 3C of the conveyor table 3, and the height is set such that when the upper and lower air cylinders 46 are in the retracted position 12, they all sink into the lower side of the conveyor table 3. .

The clamp member 52 is attached to a third arm 50 on the lower surface of the base 50.
A plane that is moved up and down by a clamping air cylinder 66 attached to the base part along a sliding shaft 68 disposed across the clamping air cylinder 66.
An inverted U-shaped clamp lever 70, a long transfer bin 72 projecting upward from the tips of the levers 70a and 70b at both ends of the clamp lever 70, and an upper end of the long transfer bin 72. It also includes a presser plate 74 attached thereto.

The levers 70a, 70b (as shown in FIG. 3) have lengths whose tips coincide with the aforementioned second and fourth arms 50b, 50d. Also, the long transfer pins 721.t, as shown in FIG. As shown in FIG. , short transfer pins 58-58
Each transfer pin 72, 58, 58 is arranged on a straight line passing between
．． An alignment axis M that is perpendicular to the conveyance path is formed by the outer circumferential portion of the tip end side of 72 .

As shown in FIG. 5, this first conveyance device 9 includes a control circuit 80 such as a normal microcomputer or a relay circuit.
Drive controlled by. On the input side of this control circuit 80, there are an unfinished product stocker 5, a first transfer device 11, a light receiver 64, and a microswitch 82 built in the moving air cylinder 22 to detect the end of the stroke. The control circuit 80 receives signals from these.Furthermore, the moving air cylinder 22, the vertical air cylinder 46, and the clamping air cylinder 66 are connected to the output side of the control circuit 80. The control circuit 80 is
Drive signals are sent to these.

Next, the operation of conveying the cufflinks C will be explained in Figures 1 and 6.
This will be explained based on the diagram.

In the first conveyance device 9, the piston 36 of the moving air cylinder 22 moves to the backward side (to the left in the figure) and the vertical air cylinder 46 is in the contracted state. 66 is in an extended state. Therefore, the first conveying device 9 is at the introduction position PO in FIG.
It is in a state where it is recessed under the conveyance platform 3 at the rear.

On the other hand, cufflinks CF unfinished goods stocker 5 to conveyor table 3
It is introduced into the upper introduction position PO. As described above, since the first conveyance table 9 is recessed under the conveyance table 3, the cuffs C to be introduced do not hit it.

The control circuit 80 detects whether or not the cufflinks C have been introduced into the introduction position PO based on the operation signal of the unfinished product stocker 5 (step 1; hereinafter, steps will be omitted and simply referred to as S1 etc.), and the cufflinks C will be If it is determined that the upper and lower air cylinders 46 have been introduced, the base 5 is raised by extending the upper and lower air cylinders 46 (S2). As a result, the transfer pins 58 and 72 and the light receiver 64 protrude above the transfer table 3. .

Subsequently, air is supplied to the left chamber 32Q of the moving air cylinder 22 to drive the piston 36 in the forward direction (rightward in the figure) (S3). As a result, the moving block 20 moves forward,
Along with this, the transfer pins 58 and 72 also move forward. During this forward movement, the transfer pin 58.72F comes into contact with the rear edge of the cuff C at the introduction position PO. Cufflinks C are introductory position PO
As shown in the diagram;
First, the transfer pin 72 at the farthest end in the figure contacts the cuff C.

As a result, the cuff C rotates as if the innermost side in the figure is pushed out, and finally the four transfer pins 72, 58, 5
8.72 (left intermediate position P3). Then,
Since the upper surface of the light emitter 60 is covered by the cuff C, a signal indicating that the light is blocked is sent from the light receiver 64. Based on this signal, the control circuit 80 determines that the cuffs C are aligned, and puts the clamping air cylinder 66 into a contracted state (S4, S5). As a result, the cuffs C are sandwiched between the presser plate 74 and the clamp receiver 54 in an aligned state along the alignment direction M (right intermediate position P4).

When the piston 36 of the moving air cylinder 22 reaches the forward end point 12, the signal of the microswitch 82 is switched. The control circuit 80 then determines that the cuff C has been transported to the first delivery position P1, and extends the clamping air cylinder 66 to release the cuff C (S6, S7).

Note that the L arm 24 (as described above, near the end point of the moving air cylinder 22, the speed is attenuated by the action of the absorber 42 and stops. Therefore, the moving air cylinder 22 is driven without deceleration control. Even if the first conveying device 9 is moved, the entire first conveying device 9 is prevented from being subjected to a large impact force, and performs stable operation.

Thereafter, a predetermined amount of air is supplied to the right chamber 32r side of the moving air cylinder 22 to move the transfer pins 58, 72 back by a predetermined amount (S8). Next, the vertical air cylinder 46 is contracted to immerse the light receiver 64 etc. under the transport platform 3 (S
9) Further air is supplied to the right chamber 32r of the moving air cylinder 22, and the transfer pins 58, 72, etc. are retreated to the initial position again (SIO). Since the transfer pins 58, 72, etc. are retracted and retracted, even if the next cuff C is introduced onto the transfer table 3, it will not be pushed backward.

The control circuit 80 repeats the above process and repeats the operation of transporting the cuffs C from the introduction position PO to the first delivery position P1 in an aligned state. In addition, when carrying the next cufflink C, the operation signal from the first transfer device 11 is also referred to, but the sixth cufflink C is also referred to.
This point is omitted in the figure for simplicity of explanation.

On the other hand, when the cufflinks C are transported to the first delivery position Pl,
The first transfer device] 1 operates to pick up the cuff C approximately in the center with the pick-up 11c and transfer it toward the buttonhole sewing machine 7. As is well known, the cufflinks C to be transferred are transferred to the processing position of the buttonhole overstitch sewing machine 7 by detecting the edge on the rear side in the illustration with a sensor installed near the processing position and stopping the transfer device 11. will be stopped.

When the overlock stitching is completed, for example,
If the cuff C is equipped with a rotating device like the one described in the 94th publication, the cuff C is rotated and the buttonhole on the opposite side is overstitched. The cufflinks C, on which the buttonhole stitching has been completed, are returned to the first transfer position P11 again by the first transfer device 11.

The cufflinks C, which have been overlocked, are conveyed in a lined manner to the second delivery position P2 by the second conveyance device 15 in the same manner as by the first conveyance device 9 described above.

Note that the second conveyance device 15 has a configuration in which the base and the arm of the clamp lever extend rearward, and the second conveyance device 15
Conveyance device. The cufflinks C, which have been sewn together, can be transported from the first delivery position P1 to the second delivery position P2 without colliding with the moving air cylinder 22 of No. 9 or the like. Further, the second conveyance device 15 is configured to determine whether or not the overlocking of the cufflinks C has been completed and is ready to be conveyed to the next button attaching process based on the activation signal from the first transfer device 11. There is.

The cuffs Cl thus conveyed in an aligned state to the second delivery position P2 & button sewing machine 1 by the second transfer device 17 in the same manner as in the first delivery position P1 described above.
3, and when button attachment is completed, it is returned to the second delivery position P2. Then, the take-in pin 19a is operated, and the cufflinks C, on which the buttonholes have been sewn and the buttons have been attached, are stored in the finished product stocker 19.

As explained above, according to this embodiment, the first conveying device 9
{Transfer pins 72 and 58 arranged in a straight line push the rear edge of cuff C and convey it, and transfer pin 72-7
After confirming the alignment of the cuffs C using a light emitter 60 and a light receiver 64 arranged in the center between the two, the cuffs C are held between the presser plate 74 and the clamp receiver 54, and the cuffs C are held in this holding state until they reach the first delivery position P1. Since the configuration is adopted to maintain the cuffs C, the cuffs C can be naturally aligned during transportation, and can be transported to the first delivery position PI while remaining aligned. As a result, the buttonhole overlock sewing machine 7 can perform processing at the correct position.

Moreover, the transfer pin 58.72, the emitter 60, and the receiver 64
The holding plate 74 and the clamp receiver 54 are all connected to this conveying device 9.
They are both moved in the same direction by the movement of the moving block 20. Therefore, unlike providing a separate alignment member or alignment state confirmation member, for example, it is possible to align and grasp the alignment during transport. As a result, there is no need for special alignment time, and the transportation time can be significantly shortened. In addition, the cuffs C are transported while being supported in the aligned state to the first delivery position P1.
When the transport device 9 suddenly decelerates or stops, the cuffs C will not be blown off by inertia force and the alignment will not be disrupted. Therefore, conveyance can be carried out at high speed,
The effect of shortening the conveyance time by this is also extremely large.

Further, since the absorber 42 is provided, complicated deceleration control is not required. And the speed can be further increased accordingly.

Furthermore, since the light emitter 60 and the light receiver 64 are provided in the center between the transfer bins 72-72, the alignment of the cuffs C can be confirmed with one set of sensors, and the number of parts can be reduced. In addition, since the transfer bins 58, 72 serve both to transport and align the cufflinks C, there is no need to provide a special alignment member, which also has the effect of reducing the number of parts. As a result, a compact and highly efficient sewing system can be designed without increasing the size of the entire device.

It goes without saying that the second conveying device 15 also has the same functions and effects as described above.

In addition, in the embodiment, the configuration is such that the transfer pins 58 and 72 are used for pushing, but it may be a pressing plate or the like.

Line contact with the rear edge of cuff C on the press plate is the same as contacting the rear edge of cuff C at two or more points, and the action and effect of aligning cuff C is the same as in the case of pins. It is.

Further, detection of the alignment state is not limited to the configuration using the light emitter 60 and the light receiver 64, and a contact type sensor may be provided on the transfer pin 58, 72, or ultrasonic waves may be used. In addition, whether it is a non-contact type or a contact type, these arrangements are
It is not limited to the center between 58, but one may be provided at each end, or three or more may be provided including the center. For example, one sensor may be provided near each of the outer transfer pins 72 and 72, and alignment may be determined when both sensors confirm that the cuff C and the transfer pin 72 are in contact with each other. A configuration in which sensors are provided at both ends has the effect of improving detection accuracy.

In addition, it can be used not only for sewing cufflinks, but also for other sheet materials, such as systems for processing the edges of leather products, and as a conveying device for transferring sheet-shaped workpieces in an aligned state to the next process. It can be applied to any system.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto. For example, sheet materials may be aligned along various conveyance paths such as not only a linear conveyance path but also an arcuate conveyance path. Various aspects, such as a configuration applied to a conveying system, can be adopted without departing from the gist of the invention.

Effects of the Invention As explained above, according to the present invention (L), since the contact means 2 is configured to contact the side surface of the edge of the sheet material at two or more points, the sheet material is not damaged by the contact member 20 during transportation. Since the alignment tag detecting means detects this alignment state and the gripping means grips and conveys the sheet material, the sheet materials can be conveyed in an aligned state to a delivery position for the next process.

Therefore, in the next step, processing such as processing the sheet material to an appropriate position can be performed.

Moreover, as mentioned above, not only does the abutting means carry out the conveyance and alignment, but also the abutting means, the detection means, and the gripping means are all provided in the conveying means. can be executed. Therefore, the transportation time can be shortened. In addition, since the gripping means continues to grip the sheet material until it reaches the delivery position, the sheet material will not be blown away due to inertia when the conveying means is moved at high speed or suddenly decelerated or stopped. As a result, the moving speed of the conveyance means can be increased, and in addition to not requiring special operation time such as the above-mentioned alignment operation, it is possible to significantly shorten the conveyance time.

In addition, since the abutting means serves both as transportation and alignment, it is highly effective in reducing the number of parts.

As a result of the above, according to the present invention, it is possible to improve the efficiency of work without increasing the size of the entire apparatus, and moreover, it is possible to use the sheet material for accurate processing in the next process.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of the embodiment, and Fig. 2 is the first
FIG. 3 is a front view of the transport device, FIG. 4 is a right side view thereof, FIG. 5 is a block diagram of the control system of the first transport device, and FIG. 6 is a flowchart of the transport control process. FIG. 1...Sewing processing system 3...Transport stand 5...Unfinished product stocker 7...Buttonhole overlock sewing machine 9...First conveyance device 11.1 First transfer device] 3.
...Button sewing machine 15...Second transfer device 17...Second transfer device 1
9... Finished product stocker 22... Moving air cylinder 46... Up/down air cylinder 54... Clamp receiver 58... Transfer pin 60.
...Emitter 64...Receiver 66...Clamp air cylinder 72...Transfer pin 74...Press plate 80...
・Control circuit C...Cufflinks...Transportation route M...Alignment direction PO...Introduction position
P1...First delivery position P2...Second delivery position

Claims (1)

[Scope of Claims] 1. In a conveyance device that conveys a sheet material introduced into a conveyance path to a delivery position to the next process by means of a conveyance means that moves along the conveyance path, the conveyance means comprises: abutting means that abuts the side surface of the edge of the sheet material at at least two points, and pushes the sheet material in contact with the sheet material along the conveying path as the conveying means moves; and the abutting means and the edge of the sheet material. a detection means for detecting whether or not the contact state has come into contact at at least two points with the sheet material; and when the contact state is detected by the detection means, the conveyance means grips the sheet material and moves the conveyance means to the delivery position. A sheet material conveying device comprising: a gripping means that continues to grip the sheet material until the sheet material is reached.