JP3676428B2 - Sheet supply device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for supplying sheets to a processing section, and more particularly to an apparatus for continuously supplying sheets one by one to a processing section.
[0002]
[Prior art and problems]
This type of sheet supply apparatus is employed in a punching apparatus as shown in FIG. In this punching device, intermittent transfer devices (4a) and (4b) comprising a pair of rollers are provided on the inlet side and outlet side of the workpiece (W) in the punching section. Next, a lifter (1) that lifts a workpiece (W) such as a sheet or sheet in a stacked state at a predetermined timing adjacent to the entrance side, and a work (W) on the uppermost layer of the lifter (1) ) And a transfer device (2b) for transferring the workpiece (W) to the intermittent transfer device (4a) on the inlet side of the punching section. And a sheet feeding device comprising the device (2). Accordingly, the workpiece (W) thrown in by the suction transfer device (2) is intermittently fed into the punching section by the intermittent transfer device (4a) on the inlet side.
[0003]
In the punching section, the workpiece (W) charged therein is initially intermittently transferred to the punching mechanism portion at a predetermined timing by the intermittent transfer device (4a) on the inlet side, and thereafter the intermittent transfer device (4a) ( After passing through a state where both the front and rear sides in the transfer direction of the workpiece (W) are intermittently transferred synchronously by 4b), finally the workpiece (W) is intermittently transferred by the intermittent transfer device (4b) on the outlet side.
[0004]
Then, when the processing for the preceding workpiece (W) is completed, a new workpiece (W) held by the suction device (2a) is put into the intermittent transfer device (4a) on the inlet side, and the above-described series of punching is performed. The action is executed.
However, in this case, even if the speed of the operation of the punching mechanism itself can be increased, it is not possible to shorten the time required for punching the entire workpieces (W) and (W) that are continuous back and forth. This is because, after the punching of the preceding workpiece (W) is completed, the waiting time until the punching of the subsequent workpiece (W) is started becomes longer than necessary.
[0005]
Therefore, the workpiece (W) sucked by the suction device (2a) is introduced into the intermittent transfer device (4a) on the inlet side when machining of the workpiece (W) put into the punching section has progressed to some extent, and this intermittent A method is conceivable in which the punching process is continued after the new workpiece (W) is cued to a certain size by the transfer device (4a). In this case, in the punching section, the punching operation is executed in a manner without the above-described waiting time.
[0006]
However, in this case, when the transfer amount of the intermittent transfer device (4a) for cueing is set constant, a new work (W) sucked and held by the suction device (2a) and the intermittent transfer device ( If there is a variation in the distance to 4a), this variation will cause a variation in the cue dimension as it is, and accurate punching to each workpiece (W) will not be possible.
The present invention has been made in view of the above points, and when a sheet-like workpiece (W) is cueed to a certain size by an intermittent transfer device (4a) provided on the inlet side of a machining section that performs a punching operation or the like. Therefore, it is an object of the present invention to improve the cue dimension accuracy so that the machining accuracy of continuous machining on the workpiece (W) can be increased.
[0007]
[Invention of Claim 1]
[0008]
[Technical means]
The technical means of the present invention for solving the above-mentioned problem is that a sheet-like workpiece (W) is fixed to the machining section by an intermittent transfer device (4a) provided on the inlet side of the machining section by inputting a cueing signal. In the sheet feeding device in which the dimension is cueed and then the workpiece (W) is intermittently transferred in accordance with the machining operation.
The intermittent transfer device (4a) has a pair of upper and lower rollers (R ₁ ) (R ₂ ) To clamp the workpiece (W) and intermittently transfer the workpiece (W). ₁ ) (R ₂ ) And the transfer operation is stopped when it is off.
Provided with a workpiece standby unit for waiting for a new unprocessed workpiece (W) continuously on the upper side of the intermittent transfer device (4a),
The intermittent transfer device (4a) is provided with a stopper (8) that appears and disappears in the transfer path of the workpiece (W) in the vicinity of the lower side,
The workpiece (W) waiting in the workpiece standby section is pushed out to the lower side, and the tip of the workpiece (W) is pushed to the roller (R ₁ ) (R ₂ ) And an extrusion device (5) for pressing against the stopper (8).
Roller (R) of the intermittent transfer device (4a) ₁ ) (R ₂ Drive device (31) for driving the roller (R ₁ ) (R ₂ ) Is rotated by an angle corresponding to the input signal value,
After the trailing end of the preceding work (W) has been disengaged from the intermittent transfer device (4a), the stopper (8) protrudes into the work transfer path and the subsequent work (W) accommodated in the work standby section is pushed out. A workpiece extrusion control means which is extruded by (5) and presses the tip of the subsequent workpiece (W) against the stopper (8);
The stopper (8) is retracted from the workpiece transfer path after the pushing operation for the subsequent workpiece (W) is completed, and the driving device (31) is rotated by an angle corresponding to the cueing dimension by inputting a cueing signal. And a cueing control means.
[0009]
[Action]
The technical means operates as follows.
When machining in the machining section for the preceding workpiece (W) progresses and the rear end of the workpiece (W) is disengaged from the intermittent transfer device (4a), the workpiece waited in the workpiece standby section during the machining. (W) is pushed to the lower side and the tip of the roller (R) of the intermittent transfer device (4a) is pushed. ₁ ) (R ₂ ) And press against the stopper (8) protruding into the transfer path.
[0010]
Thereafter, the cueing control means retracts the stopper (8) from the transfer path of the workpiece (W), and the operation of the drive device (31) of the intermittent transfer device (4a) is controlled so that the roller (R ₁ ) (R ₂ ), A cueing operation with a fixed dimension is executed.
Thus, when the workpiece (W) is cueed to the machining section, the tip of the workpiece (W) is pressed against the stopper (8) and the roller (R ₁ ) (R ₂ Cueing is performed only for the dimension set by the rotation angle.
[0011]
【effect】
The cueing dimension is the roller (R ₁ ) (R ₂ ) Is exactly the same as the rotation angle of the roller (R ₁ ) (R ₂ ) Is rotated by a certain angle, the cueing position becomes accurate, and the accuracy of the machining start position of the workpiece (W) newly input to the machining section is improved.
[0012]
The tip of the subsequent workpiece (W) has a pair of rollers (R ₁ ) (R ₂ ) Is pressed against the stopper (8) provided at the position passing through the boundary of the roller (R) ₁ ) (R ₂ Cueing operation by forward rotation) is smooth and reliable, and cueing operation failure can be prevented.
When cueing, the roller (R ₁ ) (R ₂ ) Should be in contact with the workpiece (W) to the extent that the workpiece (W) is allowed to pass or the interval to allow the passage is sufficient. it can.
[0013]
In the cueing device that detects the tip of the workpiece (W) with a sensor, it is necessary to set the transfer speed during cueing to be slow in order to prevent overrun of the workpiece (W). Since this is not necessary, the cueing operation can be accelerated at this point.
[Other inventions]
As defined in claim 2, “the stopper (8) is a roller (R) below the intermittent transfer device (4a). ₂ ) And a curved plate (81) that is coaxially and rotatably supported. ₂ ), The upper end of the arc-shaped cross section of the curved plate (81) is a roller (R ₁ ) (R ₂ ) In the vicinity of the lower side of the boundary portion ”), the stopper (8) according to the invention of claim 1 is provided with the lower roller (R ₂ ) Can be installed compactly and the stopper (8) is not bulky. In addition, the contact part of the tip of the workpiece (W) at the stopper (8) is ₁ ) (R ₂ ), The cue dimension can be set small.
[0014]
As defined in claim 4, the machining section is a punching section in which products having the same shape are sequentially punched from the workpiece (W) and punching operations are continuously executed at regular time intervals.
An intermittent transfer device (4b) is provided on the outlet side of the punching section, and this is interlocked with the intermittent transfer device (4a) so that the workpiece (W) headed in the punching section is matched with the punching operation. And a workpiece loading / unloading device configured to discharge from the processing section after completion of punching,
In the cueing state, the cue dimension is set so that the succeeding work (W) is continuous with the preceding work (W) with a predetermined gap,
The workpiece loading / unloading device is a punching operation in which a cueing operation by an intermittent transfer device (4a) and an intermittent transfer operation of the workpiece (W) for punching a product from the workpiece (W) are performed at regular time intervals. `` Synchronized with operation '' means that each operation is executed in synchronization with the punching operation that is continuously executed at regular time intervals, so the workpiece (W) is brought into the positioning state by the stopper (8). After the extrusion, the workpieces (W) (W) to be cued can be continuously punched without interrupting the punching operation and without changing the punching operation interval.
[0015]
As defined in claim 5, “the roller (R) when the transfer operation of the intermittent transfer device (4a) is stopped” ₁ ) (R ₂ ) The distance between the axes is ₁ ) (R ₂ ) Can transfer the workpiece (W) and these rollers (R ₁ ) (R ₂ ) Is set so that the workpiece (W) can pass between them '', the intermittent transfer after cueing by the intermittent transfer device (4a) ₁ ) (R ₂ ) Since the control can be executed as it is without controlling the mutual interval, the control becomes simple and the transition from the cueing operation to the intermittent transfer operation is smooth.
[0016]
【Example】
Next, the embodiment of the present invention described above will be described in detail with reference to the drawings.
The embodiment shown in FIGS. 2 to 11 is an embodiment in which the present invention is applied to a punching device such as a prepaid card or a cash card, and is supported in a laminated state by a lifter (1) as shown in FIGS. The workpieces (W) (W) made of the synthetic resin sheet thus transferred are intermittently transferred from the stacking position (A) to the punching section (C) via the relay section (B), and this punching section (C) A predetermined printing section is punched out from the workpiece (W) to obtain a prepaid card or a cash card.
[0017]
[About lifter (1) and adsorption transfer device (2)]
The lifter (1) has a structure in which a work (W) formed on a rectangular sheet is stacked on a lifting platform (11), and the lifting platform (11) is lifted intermittently. Is supported by the side wall of the frame of the relay section (B).
When the work (W) (W) within a certain range from the uppermost layer is thrown into the relay section (B), the elevator (11) is lifted by a certain distance.
[0018]
The adsorption transfer device (2) is composed of an adsorption device and a transfer device for transferring the adsorption device.
As shown in FIGS. 2 and 3, the suction device includes a swing arm (25) swingably supported by a mounting plate (24), and a suction cup provided at the tip of the swing arm (25). 21) and an air cylinder (26) for swinging the swing arm (25) at a predetermined timing.
A flexible suction circuit extending from a suction device (211) is connected to the suction cup (21), and this suction device (211) is activated when the workpiece (W) is sucked and held.
[0019]
The transfer and transfer device includes an air cylinder in which the guide shaft (23) (23) and an output shaft attached to the support bar (22) and penetrating the support bar (22) are connected to the mounting plate (24). The swing arm (25) attached to the mounting plate (24) by the operation of the air cylinder (27) is connected to the relay roller (300) provided on the entrance side of the relay section (B). It is the composition which advances and retracts.
[0020]
[About Relay Roller (300)]
As shown in detail in FIGS. 5 and 6, the relay roller (300) is juxtaposed vertically at the edge of the upper surface of the frame of the relay section (B) on the lifter (1) side, and on each surface. An upper roll (3a) and a lower roll (3b) on which a non-slip layer (S) having a high friction coefficient such as rubber is formed, and a geared motor (hereinafter simply referred to as a drive device (31)) that rotationally drives the lower roll (3b) ) And an air cylinder (37) driven to contact and separate from the upper roll (3a) and the lower roll (3b).
[0021]
The lower roll (3b) is rotatably supported by a pair of bearings (34) (34) provided on both sides of the upper surface of the frame, and a shaft portion protruding from one bearing (34) has a torque limiter (33 ) To the output shaft of the drive device (31).
The other upper roll (3a) is pivotally supported at both ends by a bearing body (35) (35) supported by a pair of guide shafts protruding upward from the bearing (34), The output shafts of the air cylinders (37) and (37) attached to the upper surface of the bridge plate (36) installed above the lower roll (3b) are connected to the bearing bodies (35) and (35) so as to connect the upper ends. It is connected separately. The air cylinders (37) and (37) operate in synchronism with each other, and the upper roll (3a) is driven up and down by this operation to contact and separate from the lower roll (3b). (See Figs. 4 and 5)
When the work (W) is thrown into the lower roll (3b), the lower roll (3b) is rotationally driven by the driving device (31), and the work (W) is thrown into the relay section (B).
[0022]
[About relay section (B) and punching section (C)]
As shown in FIGS. 2 to 4, the relay section (B) is located between the stacking position (A) provided on one side of the frame and the punching section (C) provided on the other side of the frame. Intervened in.
The punching section (C) is provided at both ends and a pair of rollers (R ₁ ) (R ₂ ) Between the intermittent transfer devices (4a) and (4b). The interval between the intermittent transfer device (4a) on one inlet side and the relay roller (300) described above is set to be longer than the length in the feed direction of one workpiece (W).
[0023]
Both the intermittent transfer devices (4a) and (4b) have the same configuration as the relay roller (300), and the upper and lower rollers (R) ₁ ) (R ₂ ) (Corresponding to the upper roll (3a) and the lower roll (3b) of the relay roller (300)) can be brought into contact with and separated from each other and is driven to rotate.
The relay section (B) is provided with an extruding device (5) for supporting the work (W) fed by the relay roller (300) and for extruding the work (W) to the punching section (C). Yes. As this extrusion device, an extrusion belt (51) stretched between pulleys (52) and (52) is employed. Above the extrusion belt (51), a pressing roller (R) pressed against the forward path side of the extrusion belt (51) by the biasing force of a spring (53). _Three ) Is deployed. The pulleys (52) and (52) are operated at a predetermined timing, and the workpiece (W) is transferred according to the operation amount, and the upper and lower rollers (R ₁ ) (R ₂ ).
[0024]
In particular, the roller (R) of the intermittent transfer device (4a) of this embodiment. ₁ ) (R ₂ ) Is different from the other intermittent transfer device (4b) and the relay roller (300), and is always in contact with a predetermined pressure, the contact pressure is a work piece extruded by the extrusion belt (51) ( W) is the upper roller (R ₁ ) Can be pushed up, and the roller (R ₁ ) (R ₂ ) Between the workpiece (W) and the lower roller (R ₂ ) Is set to such an extent that the workpiece (W) can be intermittently transferred.
The lower roller (R ₂ ) Is provided with a stopper (8). This stopper (8) has the roller (R) as shown in FIG. ₂ ) And a curved plate (81) provided so as to connect between the tips of a pair of arms (80) and (80) having a rotation fulcrum coaxial with the roller. ) Is the roller (R ₂ ) And a tongue-side portion (82) protruding from the center of the upper side of the curved plate (81) is in contact with the workpiece (W).
[0025]
The output shaft of the air cylinder (83) is connected to the input end of one arm (80), and the operation of the air cylinder (83) causes the tongue (82) of the curved plate (81) to move to the roller (R ₁ ) (R ₂ ) Projecting in the vicinity of the lower side of the boundary portion, and the tongue side portion (82) is a roller (R ₂ ) Is set at the lower part of).
The operation of the stopper (8) and the operation of the extrusion device (5) are controlled by the control device as follows.
[0026]
When the preceding workpiece (W) is detached from the intermittent transfer device (4a) and the workpiece (W) is inserted into the relay section (B), the tongue of the stopper (8) as shown in FIG. Part (82) is roller (R ₁ ) (R ₂ ) Is set in a state protruding near the lower side of the contact portion. Thereafter, the pulleys (52) and (52) are driven, and the push belt (51) and the pressure roller (R) are driven as shown in FIG. _Three ), The workpiece (W) is in contact with the roller (R ₁ ) (R ₂ ) Is spread and pressed against the stopper (8).
[0027]
Then, the following operation is executed by the subsequent cue control.
When the cueing signal is input, the stopper (8) is rotated downward by the operation of the air cylinder (83), and the roller (R) is operated by the operation of the drive device (31). ₂ ) Is rotated by a set angle, and the workpiece (W) is set to protrude from the stopper (8) to the lower side as shown in FIG. That is, the above-described cueing operation is executed.
[0028]
Each time the work (W) is put into the relay section, the above-described series of control operations by the extrusion belt (51) and the intermittent transfer device (4a) are executed.
The punching section (C) has a known configuration, and when the workpiece (W) is fed from the intermittent transfer device (4a), the punching mechanism provided between the intermittent transfer device (4b) is activated at a predetermined timing. Punch a product of a certain shape from the workpiece (W). In this embodiment, product symbols are printed in a matrix at a constant pitch on a single workpiece (W), and the punching mechanism has a printing section (in a direction transverse to the transfer direction of the workpiece (W) ( PT) number of punching dies are provided, and one line is punched at a time. Also, the workpiece (W) is intermittently transferred by the intermittent transfer device (4a) until the front half of the workpiece (W) in the transfer direction is punched. The workpiece (W) is intermittently transferred by the intermittent transfer device (4b), and when the punching is completed, the scrap portion is transferred to the roller (R) of the intermittent transfer device (4b). ₁ ) (R ₂ ) Is discharged from the punching section (C).
[0029]
Roller (R) above the intermittent transfer device (4b) ₁ ) The lower roller (R ₁ ), When the punching of the workpiece (W) proceeds and the tip of the workpiece (W) (scrap) reaches the intermittent transfer device (4b), the upper roller is lifted. The tip is a constant stroke roller (R ₁ ) (R ₂ ), The upper roller (R ₁ ) Is pushed downward, and the transfer of the workpiece (W) is started by the drive of the drive device (31).
[0030]
[About transfer mode]
In this embodiment, as shown in FIGS. 10 (a) to (c), the preceding work (W) and the succeeding work (W) are continuous with a very small distance (D). After cueing by the intermittent transfer device (4a), the two workpieces (W) are intermittently transferred together and the product is punched out.
[0031]
Therefore, the combination of the transfer pitches of one cycle of workpiece (W) (hereinafter referred to as transfer mode) is the intermediate transfer pitch (P) when the products arranged on workpiece (W) are continuously punched. ₁ ) And one seam transfer pitch (P) from when the rear end product of the preceding workpiece (W) is punched to when the first product of the subsequent workpiece (W) is punched. ₂ ).
[0032]
In the state shown in FIG. 10 (a), the succeeding workpiece (W) is cued from the intermittent transfer device (4a) with respect to the number of punches (N) for punching all products from each workpiece (W). If the number of punches is set to “0” and the number of punches until the end of the punching of the product from the preceding workpiece (W) is assumed to be (M), the workpiece (W) will reach the number of punches (M). Is the intermediate transfer pitch (P ₁ ) Is intermittently transferred to the state of (b) in FIG. ₂ ) Is transferred to the state of (c) in FIG. 10, and thereafter, the intermediate transfer pitch (P ₁ ), (N−M−1) times of intermittent transfer is performed, and the state of FIG.
[0033]
The number of punching operations is counted by a counter (6) (not shown). In order to increase the accuracy of the transfer pitch, a roller (R ₁ As the rotation drive device (31) for driving the servomotor, a servo motor is employed. Drive signals corresponding to the transfer pitches constituting the one-cycle transfer mode are input to the servo motor.
[0034]
In this embodiment, every time the count value of the counter (6) becomes “N”, the cueing operation is executed on the intermittent transfer device (4a) side, that is, the count value of the counter (6) The servo motor is rotated by a set angle by an output from a comparison means (corresponding to the second detection means described above in claim 3) for comparing with a set value “N”, and a stopper (8 The workpiece (W) pressed against () is cued to a certain dimension, and the state shown in FIG.
[0035]
Therefore, the control of the servo motor of this embodiment is performed every time the count value of the counter (6) reaches the set value (N). ₁ ) ”→” One-time seam transfer pitch (P ₂ ) ”→” (N−M−1) intermediate transfer pitch (P ₁ A series of intermittent transfer operations consisting of “feeding at“) ”are repeatedly executed so as to synchronize with the punching operation.
[0036]
The number of punches until the trailing edge of the preceding work (W) is removed from the intermittent transfer device (4a) is “m”, and it is detected that the count value of the counter (6) has reached the “m”. The comparison means is the first detection means in claim 3, and the stopper (8) is rotated upward as shown in FIG. 7 and the pulley (52) is driven by the output from the first detection means as shown in FIG. As shown in the figure, the work (W) is pressed against the stopper (8).
[0037]
[Operation of each part]
In the case of the apparatus of the above embodiment, each unit is controlled by a microcomputer. The actual punching operation will be described with reference to the flowchart shown in FIG.
Since there is no work (W) in the relay section (B) and the punching section (C) at the start, the execution start timing of the above transfer mode and the punching mechanism start timing by the intermittent transfer devices (4a) (4b) are set. Therefore, as shown in FIG. 7, the work section (B) is accommodated in the relay section (B), and the work section (W) is set in a state where the work (W) is cueed to the punching section (C). (Step ST1)
This completes the initial setting. At this time, the work (W) is not attracted to the suction cup (21) as shown in FIG.
[0038]
In this state, the counter (6) is operated, and the punching mechanism and the intermittent transfer devices (4a) (4b) are operated synchronously. (Step ST2)
At the initial setting stage, there is no workpiece (W) in the punching mechanism (the state in which there is no preceding workpiece (W) in FIG. 10- (b)), and the blanking state is reached, and a predetermined number of punches are performed. The actual punching process is executed from the point in time when the tip of the workpiece (W) reaches the punching mechanism.
[0039]
During this operation, the next suction operation is performed on the workpiece (W) group stacked on the lifter (1).
In the vicinity of the front end in the sheet feeding direction with respect to the workpiece (W) group, the suction cup (21) of the suction device (2a) in the initial position is separated from the uppermost workpiece (W). Thereafter, the suction device (211) is turned “ON” by the suction signal input (step ST3) and the air cylinder (26) is driven forward to suck the uppermost workpiece (W). Thereafter, the air cylinder (26) is driven in reverse after a certain waiting time (about 0.1 second), and the suction cup (21) returns to the upper initial position. That is, the workpiece (W) is sucked and held by the reciprocating drive of the air cylinder (26). (Step: ST4)
Next, when it is detected from the intermittent transfer device (4a) that the rear end of the workpiece (W) has moved forward by the count value of the counter (6) or by detecting the position of the rear end of the workpiece (W). (Step ST5), the air cylinder (27) is positively driven for a predetermined time, and the mounting plate (24) is driven to the relay roller (300) side by a preset distance. (Step ST6)
In this embodiment, the first detection means detects that the count value of the counter (6) has reached "m", and the above operation is executed.
[0040]
Accordingly, as shown in FIG. 7, the tip of the work (W) attracted and held by the suction cup (21) is put between the upper roll (3a) and the lower roll (3b) of the relay roller (300). .
At this time, the air cylinder (37) is in the initial state, and the upper roller (3a) is separated upward from the lower roller (3b).
Thereafter, the air cylinder (37) is driven forward, the upper roller (3a) is brought into contact with the lower roller (3b), and the suction device (211) is turned off as indicated by the broken line in FIG. In step ST7), the lower roll (3a) is driven to rotate by a fixed angle (rotation angle necessary to put the work (W) into the relay section (B)) by the drive device (31) (step ST8), and the process shown in FIG. Thus, the whole work (W) is completely fed into the relay section (B). Thereafter, the air cylinder (27) is reversely driven to return to the initial position. (Step ST9)
Next, the air cylinder (37) is reversely driven to lift the upper roller (3a) (step ST10), and the drive belt (51) is positively driven by a fixed distance by the drive device (31). (Step ST11)
At this time, since the workpiece (W) is detached from the intermittent transfer device (4a), the air cylinder (83) is actuated by the output of the first detecting means, the stopper (8) is lifted, and the transfer belt (51) is moved. Driven. This transfer belt (51) and pressure roller (R _Three ), The workpiece (W) is brought into contact with the roller (R ₁ ) (R ₂ ) Is pushed and spread, and the tip of the workpiece (W) is pressed against the stopper (8) as shown in FIG.
[0041]
Thereafter, when the number of punches for the preceding workpiece (W) reaches the set number (N), this is determined by step ST12 (second detecting means), the counter (6) is reset, and the transfer device (4a ) Down roll (R ₂ ) Is rotated by a set angle to find a fixed dimension. (Step ST13)
Thereafter, during the punching operation, at the stacking position (A), the suction cup (21) of the suction device (2a) stands by while holding a new work (W), and the preceding work (W) is intermittently transferred. New workpiece (W) is fed from the stacking position (A) to the relay section (B) every time it is detected that it is detached from the device (4a), and the operation of the extrusion belt (51) as the extrusion device (5) Thus, the head is set in a state waiting for the cueing operation. After that, every time the count value of the counter (6) reaches the set value (N), the intermittent transfer device (4a) performs the cueing operation of the subsequent workpiece (W) and performs the punching operation in the punching section (C). The stacked workpiece (W) groups are sequentially punched without stopping.
[0042]
[Others]
In this embodiment, the apparatus of the present invention is used when the workpiece (W) is sequentially supplied from the stacking position (A) in the punching apparatus to the punching section (C), but it goes without saying that it can be used for other processing apparatuses. Yes.
In the above embodiment, the workpiece (W) at the stacking position (A) is sequentially put into the relay section (B) by the combination of the relay roller (300) and the suction transfer device (2). The work (W) may be directly fed from the stacking position (A) to the relay section (B) by the device (2).
[0043]
Furthermore, in the above embodiment, as the extrusion device (5), the pulley (52) on the upper side of the extrusion belt (51) stretched over almost the entire area of the relay section (B) is provided independently. 12, the lower roll (3b) may be the pulley (52), and the pressure roller (R _Three ), And a claw (59) for extruding the workpiece (W) may be provided, and the passage portion of the claw (59) of the upper roller (3a) may be a groove. Further, an extrusion belt (51) having the claw (59) may be partially provided on the upper side of the relay section (B). Further, instead of the belt device, a reciprocating linear drive device may be used as the extrusion device (5). As a method for detecting that the rear end of the workpiece (W) has moved forward from the intermittent transfer device (4a), in the above embodiment, the counter (6) count value depends on whether or not the predetermined value “m” has been reached. Although the determination method is adopted, a detection means for detecting the position of the rear end of the workpiece (W) is provided on the lower side near the intermittent transfer device (4a), and the output of the workpiece (W) is determined by the output from the detection means. It may be detected that the rear end has moved forward from the intermittent transfer device (4a).
[0044]
In any of the embodiments described in detail above, the present invention was applied to the cueing device when the workpiece (W) was put into the punching section (C) from the relay section (B). The workpiece (W) adsorbed and held by (21) is directly transferred to the rollers (R) of the intermittent transfer device (4a). ₁ ) (R ₁ ) May be pressed against the contact point.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a conventional example
FIG. 2 is an overall explanatory diagram of an embodiment of the present invention.
FIG. 3 is an enlarged view of the main part.
FIG. 4 is a perspective view of the stopper (8).
Fig. 5 Cross section of relay roller (300)
[Fig. 6] Front view of relay roller (300)
FIG. 7 is an explanatory diagram showing a state in which a work (W) is accommodated in the relay section (B).
[Fig. 8] Explanatory drawing of workpiece pushing state in relay section (B)
FIG. 9 is an explanatory diagram of the cueing state.
FIG. 10 is an explanatory diagram of the intermittent transfer operation of the workpiece (W) in the punching section (C).
FIG. 11 is a flowchart of a paper feeding operation.
FIG. 12 is an explanatory diagram of the main part of another embodiment.
[Explanation of symbols]
(W) ・ ・ ・ Work
(2) ... Suction transfer device
(R ₁ ) (R ₂ )···roller
(300) ... Relay roller
(4a) (4b) ・ ・ ・ Intermittent transfer device
(5) ... Extruding equipment
(51) ... Extruded belt

Claims (5)

When the cueing signal is input, the intermittent transfer device (4a) provided on the inlet side of the machining section causes the sheet-like workpiece (W) to cue to the machining section with a certain dimension, and then the workpiece (W) is machined. In the sheet supply device adapted to be intermittently transferred in accordance with the
The intermittent transfer device (4a) is configured to clamp and transfer the workpiece (W) intermittently with a pair of upper and lower rollers (R ₁ ) (R ₂ ), and the workpiece (W) is connected to the rollers (R ₁ ) ( R ₂ )
Provided with a workpiece standby unit for waiting for a new unprocessed workpiece (W) continuously on the upper side of the intermittent transfer device (4a),
The intermittent transfer device (4a) is provided with a stopper (8) that appears and disappears in the transfer path of the workpiece (W) in the vicinity of the lower side,
An extruding device (5) for extruding the work (W) waited in the work waiting section to the lower side and passing the tip between the rollers (R ₁ ) (R ₂ ) and pressing it against the stopper (8) )
The drive device (31) for driving the rollers (R ₁ ) and (R ₂ ) of the intermittent transfer device (4a) rotates the rollers (R ₁ ) and (R ₂ ) by an angle corresponding to the input signal value. With a configuration to
After the trailing end of the preceding work (W) has been disengaged from the intermittent transfer device (4a), the stopper (8) protrudes into the work transfer path and the subsequent work (W) accommodated in the work standby section is pushed out. A workpiece extrusion control means which is extruded by (5) and presses the tip of the subsequent workpiece (W) against the stopper (8);
The stopper (8) is retracted from the workpiece transfer path after the pushing operation for the subsequent workpiece (W) is completed, and the driving device (31) is rotated at an angle corresponding to the cueing dimension by inputting a cueing signal. Dispensing control means;
Sheet supply device provided with The stopper (8) is a curved plate (81) coaxially and rotatably supported by the roller (R ₂ ) below the intermittent transfer device (4a), and the curved plate (81) is the roller (R) ₂ ), the upper end of the arc-shaped cross section of the curved plate (81) is a roller (R ₁ ) (R ₂ ) in a state of projecting into the transfer path of the workpiece (W). The sheet supply apparatus according to claim 1, wherein the sheet supply apparatus faces the lower side of the boundary portion. First detection means for detecting that the preceding work (W) has come off from the intermittent transfer device (4a) is provided, and the work push-out control means is provided with a push-out device (5) in response to the detection signal output of the first detection means. )
2. A second detecting means for detecting that the processing of the preceding workpiece (W) after the workpiece pushing operation has reached a predetermined stage before the end of processing is provided, and the second detecting means is used as the cueing signal. Or the supply apparatus of the sheets of Claim 2. The processing section is a punching section in which products of the same shape are sequentially punched from the workpiece (W) and the punching operation is continuously executed at regular time intervals.
On the outlet side of this punching section, an intermittent transfer device (4b) that operates synchronously or independently with the intermittent transfer device (4a) is provided,
By these intermittent transfer devices (4a) and (4b), the workpiece (W) headed to the punching section is intermittently transferred in accordance with the punching operation, and the scrap is discharged from the punching section after the punching is completed. Configure the input / output device,
In the cueing state, the cue dimension is set so that the succeeding work (W) is continuous with the preceding work (W) with a predetermined gap,
The workpiece charging / discharging device is a punching operation in which the cueing operation by the intermittent transfer device (4a), the intermittent transfer operation of the workpiece (W) by the workpiece charging / discharging device, and the scrap discharging operation are performed at regular time intervals. The sheet supply apparatus according to claim 1, which is synchronized with an operation. The interval between the axes of the rollers (R ₁ ) and (R ₂ ) when the transfer operation of the intermittent transfer device (4a) is stopped allows the workpiece (W) to be transferred by these rollers (R ₁ ) and (R ₂ ). rollers (R ₁₎ (R ₂₎ sheets feeding apparatus according to claim 1 which is assigned to a distance capable of passing through the workpiece (W) therebetween.

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