JPH08197493A - Sheet feeding method and feeder therefor - Google Patents

Abstract

PURPOSE: To feed workpieces in the laminated state to a punching section correctly at high speed and prevent the workpieces from being soiled with printing ink. CONSTITUTION: A relay section B is provided between a laminating position A and a punching section, and a succeeding workpiece W is always made stand by in the relay section B. A preceding workpiece W and the succeeding workpiece W are continuously charged into the punching section, and the succeeding workpiece W is charged when the unmachined area of the preceding workpiece W becomes the fixed quantity. Continuous charge is performed by clamping only the rear end or rear side edge of the workpiece W by the clamping claws of a first intermittent transfer device 4a provided in the relay section B to transfer, and clamping the workpiece W by a pair of rollers of a second intermittent transfer device 4b provided on the workpiece discharge side of the punching section to intermittently transfer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for feeding sheets to a punching section and a sheet feeding apparatus for carrying out the same, and particularly to punching sheets in a laminated state continuously one by one. The present invention relates to a method and an apparatus for supplying a section.

[0002]

2. Description of the Related Art A sheet feeding device of this type is used, for example, in a punching device as shown in FIG. In this punching device, the first and second intermittent transfer devices (4
a) (4b) is provided. Then, a lifter that is adjacent to the loading side and lifts a sheet or a sheet as a stacked work (W) group by a predetermined stroke at a predetermined timing.
(1) and an adsorption transfer device (2) for adsorbing the uppermost work (W) of this lifter (1) and inserting its tip into the first intermittent transfer device (4a) on the injection side of the punching section. ), And a sheet feeding device is provided. Therefore, the work (W) loaded by the suction transfer device (2) is intermittently fed into the punching section by the first intermittent transfer device (4a) on the loading side.

The adsorption transfer device (2) comprises an adsorption device (2a) and a transfer device (2b), and the adsorption device (2a) is driven up and down with respect to the uppermost work (W). The suction device (21) is equipped, and the other transfer device (2b) advances and retreats at a predetermined timing with respect to the first intermittent transfer device (4a) in conjunction with the suction of the work (W) by this suction device (21). . Then, usually, every time a predetermined number of works (W) are introduced to the first intermittent transfer device (4a) side, or whenever the height of the work (W) of the uppermost layer is lowered by a certain degree. The lifter (1) is operated to lift the stacked work (W) group by a certain stroke.

In the punching section, the work (W) input thereto is initially transferred intermittently to the punching mechanism section at a predetermined timing by the first intermittent transfer device (4a) on the input side, and the work (W) The print area, which is the punched part of (W), is punched, and then the front and rear sides of the workpiece (W) in the transport direction are intermittently transported synchronously by the first and second intermittent transport devices (4a) and (4b). After the state of being punched out, finally, the scrap after the printing area is punched out from the entire area of the work (W) is intermittently transported by the intermittent transfer device (4b) on the discharge side.

Then, when the punching process for this work (W) is completed, a new work (W) held by the suction device (2a) is introduced into the first intermittent transfer device (4a) on the input side. The above-mentioned series of punching operations is executed. However,
With this product, even if the operation of the punching mechanism can be speeded up, the time required for punching the entire stacked work (W) (W) group cannot be significantly shortened. This is because the waiting time after the punching of the preceding work (W) is completed and before the punching of the following work (W) is started becomes longer than necessary.

Therefore, the work put in the punching device.
A method is conceivable in which the work (W) adsorbed by the adsorbing device (2a) is fed to the feed roll (4a) on the feeding side when the processing of (W) has progressed to some extent. In this case, the punching device performs the punching operation in the mode without the waiting time described above. However, in this case, if the suction operation by the suction device (2a) of the suction transfer device (2) has a suction failure, for example, if the workpiece (W) cannot be sucked or two workpieces
When (W) is adsorbed at the same time, it is necessary to make a corrective action such as stopping the operation of the punching device until the suction transfer device (2) side returns to normal, and the punching operation of the punching device becomes smooth. The problem of not being executed remains.

In addition, since the print areas formed in a matrix on the work (W) are introduced into the punching section by the first intermittent transfer device (4a) composed of a pair of rollers, the ink in the print area is Adhere to the roller. Therefore, depending on the conditions of the work (W) such as when the print area is not sufficiently dried and hardened, the work (W) newly input may be soiled. Moreover, it is also necessary to replace the rollers.

The present invention has been made in view of the above-mentioned points. "The uppermost work (W) of the sheet-like work (W) (W) group in the stacked state is moved from this stacking position (A). In the sheet feeding method or sheet feeding apparatus, the work feeding device sequentially feeds each work (W) at the laminating position (A) to the punching section by sequentially transferring and transferring to the subsequent process. Even if there is a suction failure in the work input device at the position, it is easy to deal with this, and it is possible to shorten the overall processing time of the stacked work (W) (W) group. It is an object of the present invention to prevent stains caused by the printing ink.

[Invention of Claim 1]

[0010]

[Technical Means] A technical means of the present invention for solving the above-mentioned problem is to say, "a work (which is inserted by a work insertion device from the stacking position (A) between the punching section and the stacking position (A)). Relay section (B) for waiting (W)
And a second intermittent transfer device for intermittently transferring the work (W) by clamping the work (W) with a pair of rollers on the discharge side in the transfer direction of the work (W) in the punching section.
(4b) is provided, and only the rear end or rear side edge of the workpiece (W) put into this relay section (B) is clamped in the relay section (B) by the clamping claw at the starting point position.
By moving the holding claw, the work piece is placed in the punching section.
A first intermittent transfer device (4a) is provided for intermittently transferring the work (W) after charging (W), and in the punching section, the first and second intermittent transfer devices (4a) (4b) are provided. The work (W) is intermittently transferred by
(W) is punched over the whole area, and when the punching process for the preceding work (W) reaches a predetermined stage, the subsequent work that has been made to wait in the relay section (B).
(W) is introduced into the punching section by the first intermittent transfer device (4a) and continuously transferred to the preceding work (W), and the work (W) from the relay section (B) to the punching section is transferred. After loading, add a new work (W) to the stacking position (A)
From the above, it is configured to be input to the relay section (B) ”.

[0011]

The above technical means operates as follows. The work (W) adsorbed by the adsorption transfer device (2) is once put into the relay section (B) at a predetermined timing before being put into the punching section. And the preceding work
The relay section waits until the punching process of (W) reaches a predetermined stage. Then, when the punching process for the preceding work (W) reaches a predetermined stage, the succeeding work (W) put into the relay section (B) becomes the first work piece.
With the intermittent transfer device (4a), only the rear end or the rear side edge is clamped by the sandwiching claws and is introduced into the punching section. Then, the succeeding work (W) is intermittently transferred by the first intermittent transfer device (4a) in a state substantially continuous with the preceding work (W). The preceding work
There may be a constant distance between (W) and the following work (W).

Therefore, the punching process is continued with no waiting time in the punching section or with a short waiting time. Also, from the stacking position (A) to the adsorption transfer device.
When a workpiece (W) is loaded into the relay section (B) via (2), even if suction failure occurs, the relay section
Since there is a certain waiting time between the input of the work (W) to (B) and the input of the subsequent work (W), correction operation such as re-operation by the work input device can be performed during this time. Therefore, it is easy to deal with defective work input.

In the punching section, the punching process is performed by the cooperation of the first and second intermittent transfer devices (4a) and (4b).
Since the second intermittent transfer device (4b) is based on the intermittent rotation of a pair of rollers provided at a fixed position, there is no need for time to return and move the holding claws, and the print area is set from the work (W). Since it only contacts the scrap part after pulling out,
The rollers of this are almost clean. Further, the scrap can be discharged to the opposite side of the punching section by rotating the pair of rollers at the fixed position.

[0014]

[Effect] In the punching section, since the preceding work (W) and the following work (W) can be punched in a continuous manner, the required machining time can be shortened, and moreover, the relay section can be performed while executing the punching work in this manner. A new work (W) can be loaded into (B) without fail. In other words, even if the suction transfer device (2) causes a defective loading operation, the preceding work (W) and the following work (W) are continuously punched in a continuous manner. Therefore, the punching time loss due to this can be prevented.

Since the first intermittent transfer device (4a) on the loading side clamps only the rear end or the rear side edge of the work (W) that is out of the printing area, the work (W) is paired with a pair of rolls.
There is no concern that the first intermittent transfer device (4a) stains the punched part on the surface of the succeeding work (W), unlike the conventional method of putting the punch into the punching section. Further, since the second intermittent transfer device (4b) on the discharge side is of a type including a pair of rollers, the scrap discharging operation can be speeded up only by rotating these rollers. That is, the first type of intermittently moving the gripping claw
Since the intermittent transfer device (4a) and the second intermittent transfer device (4b) consisting of a pair of rollers are combined, the first and second intermittent transfer devices (4a) and (4b) are both moved so that the holding claws are moved intermittently. It is possible to solve the inconvenience in the case of the above method or the method in which the first and second intermittent transfer devices (4a) and (4b) are both formed of a pair of rollers.

[Invention of Claim 3] According to the present invention, the timing is set between the input of the work (W) from the relay section (B) to the punching section and the input of the work (W) to the relay section (B). By doing so, the transfer operation of the work (W) in the relay section is carried out smoothly, and the technical means adopted for this purpose is "the preceding work (W) in the punching section". When the front end of the first intermittent transfer device (4a) is inserted between the pair of rollers of the second intermittent transfer device (4b), the sandwiching claw of the first intermittent transfer device (4a) is unclamped, and then the sandwiching claw is passed through the relay section (B). ) To the starting point position, and from the stacking position (A) to the relay section (B), work (W)
Then, when the unprocessed part length in the punching section of the preceding work (W) reaches the set length, the following work (W) is fed from the relay section (B) to the punching section. It has been configured ”.

In this case, the first and second parts are synchronized with the punching process for the work (W) in the punching section.
When the intermittent transfer by the intermittent transfer devices (4a) and (4b) progresses and the intermittent transfer of the work (W) in the punching section is switched to the intermittent transfer by the second intermittent transfer device (4b) only, the first intermittent transfer device The sandwiching claw of (4a) returns to the starting point position, and at this time, the following work (W) is loaded from the stacking position (A) to the relay section (B) by the work loading device. After that, when the length of the unprocessed part of the work (W) in the punching section reaches the set length, it means that the succeeding work (W) is surely put in the relay section (B). The work (W) can be smoothly transferred from (B) to the punching section.

[Invention of Claim 5] The present invention is an invention of an apparatus for carrying out the invention of Claim 1 above. Means adopted for this purpose is "a stacking position (A) at which workpieces (W) are stacked. When,
The relay section (B) provided between the punching section and the stacking position (A) and the uppermost work (W) at the stacking position (A) are held by suction and held, and the first detection means described later
The relay section by the first input signal from (551)
A work input device configured to execute an operation of sucking and holding a new work (W) after the work (W) is input to (B), and a work (W) input by the work input device.
The workpiece support plate (41) provided on the relay section (B) to support the workpiece and the workpiece (W) is driven up and down by the punching section side end of the relay section (B) and the workpiece loading device (W). ) Is thrown into the relay section (B), it projects upward from the work support plate (41) and, after the completion of the throwing, the stopper (45) drops below the work support plate (41), and At the starting position of the end of the section (B) on the side of the work input device, the work support plate (4
1) Pushing the rear edge or the rear side edge of the work (W) supported by 1) and clamping at a predetermined timing to unclamp when reaching the transfer end point, and the clamping claw that has a preset transfer distance. A first linear drive device for intermittently driving a fixed distance forward at regular intervals and then returning to a starting point position;
The work (W) is loaded from the relay section (B) into the punching section, and after the loading, the work (W) is
A first intermittent transfer device (4a) for intermittently transferring (W) in synchronism with the punching operation and a pair of rollers provided on the discharge side of the punching section and intermittently rotating in synchronization with the punching operation. A second intermittent transfer device (4b) for intermittently transferring the work (W) and a first detection means for outputting a first closing signal when the holding claws of the first intermittent transfer device (4a) return to the starting point position. (551) and second detecting means (550) which outputs a second closing signal when the unmachined portion length of the work (W) in the punching section reaches a set length, 2 The first intermittent transfer device for the work (W) of the relay section (B) by the second input signal from the detection means (550)
By (4a), it is configured to be put into the punching section ”.

[Operation and Effect] According to this device, the work (W) in the punching section is transferred by the first intermittent transfer device (4
When the transfer by (a) is switched to the transfer by only the second intermittent transfer device (4b), the holding claw of the first intermittent transfer device (4a) returns to the starting point position, and the first detection means (551) detects the first claw. The work input device is activated by the input signal and the relay section (B)
A new work (W) is loaded on the upper surface of the work support base (41) of. At this time, since the stopper (45) projects toward the tip side, the front end of the work (W) is positioned so as to be in contact with it. After this, the stopper (45) descends and sinks downward from the work support base (41).

When the unprocessed portion length in the punching section reaches the set length, the second detecting means (550) outputs the second portion.
The first intermittent transfer device (4a) is activated by the input signal, and the subsequent work (W) input to the relay section (B) is the work support base (41) at the same height as the machining position of the punching section.
Then, it is thrown into the punching section from the relay section (B). At this time, the stopper (45) becomes the work support base (41).
Since it is immersed downward from the
It does not hinder the transfer of (W).

At this time, the preceding work (W) is intermittently transferred by the second intermittent transfer device (4b) to continue the punching process, and when the punching process is completed, the pair of second intermittent transfer devices (4b) are paired. It is discharged to the scrap discharge area by the roll. After that, when the front end of the succeeding work (W) is clamped by the pair of rolls of the second intermittent transfer device (4b),
After that, the first intermittent transfer device (4a) is transferred to the relay section (B).
After returning to the starting point position, the series of operations described above is executed.

The method of the invention described in claim 1 is executed as described above. [Invention of Claim 6] This invention solves the same problem as that of the invention of claim 5. Technical means of the present invention include: a stacking position (A) where works (W) are stacked, a relay section (B) provided between a punching section and the stacking position (A), and a stacking position (A). Top Workpiece (W)
Standby in the state of sucking and holding the first detection means (551) described later.
And a work input device configured to execute an operation of sucking and holding a new work (W) after the work (W) is input to the relay section (B) by the first input signal from Work support plate provided in the relay section (B) to support the input work (W)
(41) and the work support plate (41) can be swung between a tilted position in which the work support plate (41) descends forward and a horizontal position that matches the working height of the work (W). In the inclined posture, a stopper (45) protruding upward from the work supporting plate (41) at the end of the relay section (B) on the punching section side and positioned downward in the horizontal posture, and the relay section
After the work (W) supported by the work support plate (41) at the starting point position of the end on the side of the work input device of (B) by a second input signal from a second detection means (550) described later. A nipping claw that pushes out the end or rear side edge and clamps at a predetermined timing and becomes unclamped when reaching the transfer end point position,
A first linear drive device that intermittently drives the clamping claws forward at a preset transfer distance for a fixed distance and then returns to the starting point position to drive the work (W) into a relay section.
A first intermittent transfer device (4a) is provided for inserting the work (W) into the punching section and for intermittently transferring the work (W) in synchronization with the punching operation after the introduction, and is provided on the discharge side of the punching section. Moreover, the second intermittent transfer device (4b) for intermittently transferring the work (W) by intermittently rotating a pair of rollers in synchronism with the punching operation, and the clamping claws of the first intermittent transfer device (4a) are at the starting position. The first detection means (551) that outputs the first closing signal when returning to, and the second closing signal when the length of the unprocessed part of the workpiece (W) in the punching section reaches the set length. Second detecting means for output (550)
And the work supporting plate (41) is tilted by the first input signal from the first detecting means (551),
The work supporting plate (41) is set to a horizontal posture by the second input signal from the detecting means (550), and the work (W) of the relay section (B) is input to the punching section by the first intermittent transfer device (4a). It has been configured to do ”.

[Operation and Effect] With this configuration, the invention of claim 1 can be implemented in the same manner as the invention of claim 5. The present invention differs from claim 5 in the construction of the relay section (B), but in other respects adopts a common construction. The present invention
The work support plate (41) is swingable between a tilted position in which the work support plate (41) descends forward and a horizontal position corresponding to the processing height of the work (W). In the posture, the relay section (B) is characterized in that a stopper (45) protruding upward from the work support plate (41) at the rear end portion of the relay section (B) and positioned downward in the horizontal posture is provided. Furthermore, the posture of the work support plate (41) is determined by the first input signal from the first detection means (551) and the second detection means (550).
It is characterized in that it is controlled by the second input signal from.

In this case, since the work support plate (41) is inclined so as to descend toward the front, the work (W) input from the work input device can be smoothly transferred to the relay section.
The trailing edge of the preceding work (W) that has been put into the punching section as well as being put into the (B) is a relay section.
Even in the state of projecting to the (B) side, in this inclined posture, the front end side of the work supporting plate (41), that is, the punching section side, is located below the work projecting portion and is located behind it. The side is located above. Therefore, in this state, the following work (W) can be put into the relay section (B).

Therefore, in the relay section (B), there is surely a succeeding work (W) when it is put into the punching section. Further, since the succeeding work (W) can be loaded in a state where the rear part of the preceding work (W) projects into the relay section, the length of the relay section (B) can be minimized. Specifically, the length of the relay section (B) may be the length of the work (W) as well as the occupied space length at the starting point position of the sandwiching claw.

[0026]

Embodiments of the present invention described above will now be described in detail with reference to the drawings. The embodiment shown in FIGS. 2 to 11 is one in which the present invention is applied to a punching device such as a prepaid card or a cash card, and is composed of a synthetic resin sheet supported in a laminated state by a lifter (1) (W ) (W) group is intermittently transferred from the stacking position (A) to the punching section (C) via the relay section (B), and the punching section (C) is
In (C), the prepaid card or cash card is punched out from the work (W).

[Embodiment 1] In this embodiment, a work support plate is used.
The work (W) is supplied from the stacking position (A) to the relay section (B) while the (41) is maintained in the horizontal posture, and then the work (W) is fed into the punching section (C). The respective parts of the apparatus will be described in detail. [Work loading device] This device stacks the work (W) formed on the rectangular sheet on the lifting table (11), and the lifting table (11)
It has a configuration in which a lifter (1) that intermittently lifts up, an adsorption transfer device (2), and a relay roller (300) are combined. The lifter (1) is provided with a lift table (11) when the height of the uppermost workpiece (W) is lowered to a set position by feeding.
Is lifted and operates so as to maintain the height of the uppermost workpiece (W) at the set position.

The adsorption transfer device (2) is provided on a pair of support bars (22) and (22) installed between the upper ends of the frame bodies (10) and (10), and the adsorption device (2a) and the transfer device (2b). ) And. The adsorption device (2a)
As shown in FIGS. 3 and 4, a swing arm (25) supported by a mounting plate (24) and a suction cup (21) provided at the tip of the swing arm (25).
And an air cylinder swingably mounted on the mounting plate (24) for swinging the swing arm (25) at a predetermined timing.
(26) consists of Further, the suction device (21
A flexible suction circuit extending from 1) is connected, and this suction device (211) is activated when the work (W) is suction-held.

The transfer device (2b) has the guide shafts (23) (23).
And an air cylinder attached to the support bar (22) and connected to the mounting plate (24) by an output shaft penetrating the support bar (22).
(27) and the mounting plate (24) moves back and forth with respect to the relay roller (300) according to the operation of the air cylinder (27). The forward / backward stroke of the output shaft of the air cylinder (27) of this embodiment is set to a constant stroke in advance, and at the starting point position during the forward drive, the suction cup (21a) of the suction device (2a) connected to the output shaft is set. ) Is a certain distance behind and above the front end of the stacked work (W) in the transfer direction, and
At the most advanced position from this position, the tip of the work (W) held by the suction cup (21) has entered the relay roller (300) for a certain distance. Then, the air cylinder (27) is moved from the starting point position to the most advanced position by the input of the normal drive signal and stopped, and is returned by the reverse driving signal input to be returned from the most advanced position to the starting point position and stopped.

As shown in detail in FIG. 5 and FIG. 6, the relay rollers (300) are vertically arranged side by side at the edge of the upper surface of the frame of the relay section (B) on the side of the lifter (1). An upper roll (3a) and a lower roll (3b) formed with a non-slip layer (S) having a high friction coefficient such as rubber on the surface of the, and a forward / reverse drive device (31) for rotationally driving the lower roll (3b), An air cylinder (3) that drives the upper roll (3a) and the lower roll (3b) to move toward and away from each other.
7) consists of

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 the shaft portion protruding from the one bearing (34) has a torque. It is connected to the output shaft of a geared motor (hereinafter, simply referred to as a forward / reverse driving device (31)) capable of forward / reverse driving via a limiter (33). The other upper roll (3a) has its both ends rotatably supported by bearing bodies (35) and (35) supported up and down by a pair of guide shafts projecting upward from the bearing (34). Air cylinder (37) mounted on the upper surface of the bridge plate (36) installed above the lower roll (3b) so as to connect the upper ends.
The output shaft (37a) of (37) is separately connected to the bearing bodies (35) and (35). The air cylinders (37) (37) operate in synchronism with each other, and the upper roll (3a) is driven up and down by this operation to come into contact with and separate from the lower roll (3b). In addition, the bearing body (35) (3
A one-way clutch (32) is interposed in the shaft support of the upper roll (3a) in 5). (Refer to FIG. 3 and FIG. 6) When the work (W) is loaded by the adsorption transfer device (2), the lower roll (3b) is driven by the forward / reverse drive device (31) at a predetermined timing and reversely driven for a certain period of time. After that, it is configured to be normally driven for a certain period of time.

[Relay section (B) and punching section (C)] As shown in FIGS. 2 to 4, the relay section (B) has a stacking position (A) provided on one side of the frame thereof, Punching die provided on the other side of the frame
It is interposed between the punching section (C) and (K). On the work discharge side of the punching section (C) (in this embodiment, the scrap discharge side after card punching), a second intermittent transfer device (4b) consisting of a pair of rollers similar to the conventional one is provided and relayed. The section (B) is provided with a first intermittent transfer device (4a) described later.

Above the frame of the relay section (B), the work (W) fed by the relay roller (300)
A work support plate (41) for supporting the work is provided. The height of the work support plate (41) is lower than that of the relay roller (300), and is set to be substantially the same as the upper surface of the die of the punching die (K). A stopper (45) is provided at the end of the relay section (B) on the punching section (C) side, and the stopper (45) is moved up and down by the linear motion device (451) so that it can be retracted and retracted from the work support plate (41). Become. The stopper (45) is controlled by the detection signal of the first detection means (551) described later.

Between the work support plate (41) and the frame of the relay section (B) below the work support plate (41), as shown in FIGS. ) For intermittent transfer to the punching section (C) side
(4a) is provided. This first intermittent transfer device (4a)
A pair of first clamp devices (401) (401) having a holding claw for clamping the rear end of the work (W), and a first linear drive device (40) for linearly intermittently driving the clamp device.
2) consists of.

At the starting point position of the first clamp device (401), the rear end portion of the work support plate (41) (the relay roll (30
(0) side), the pair of clamping claws constituting the first clamp device (401) are opened forward. The height of the first clamp device (401) is substantially equal to the height of the work support plate (41), and when the first clamp device (401) clamps the rear end of the work, the clamp height is the work. Support plate (41)
It is set to be slightly higher than. Then, on the work supporting plate (41), the first clamp device (401) (401)
Notch (44) that opens rearward in the range corresponding to the movement path of
(44) is formed.

The clamp operation of the first clamp device (401) and the start timing of the first linear drive device (402) are as follows.
It is controlled by the detection signal of the second detection means (550) for detecting the position of the work (W) in the punching section (C). In this embodiment, the second detecting means (550) is a detecting means which is in a detection output state when the count value n of the counter (6) described later becomes the set value (N).

As shown in FIG. 2, the second intermittent transfer device (4b) on the scrap discharge side of the punching section (C) has the same structure as the conventional one, and has a pair of rollers vertically contacting each other. The lower roller is driven to rotate intermittently, the upper roller is brought into contact with the lower roller during the transfer operation, and is lifted upward when the transfer operation is completed. In the first intermittent transfer device (4a), the first clamp device (401) is the work (W).
After the rear end of the workpiece is clamped, the first linear drive device (402) moves the first clamp device (401) by a certain distance (L) from the starting point position of the first linear drive device (402) to advance the front end of the work (W). The work (W) is stopped when the distance (D) between it and the rear end of the work (W) is reached, and thereafter, the work (W) is intermittently transferred at a predetermined distance in synchronization with the punching device.

The other second intermittent transfer device (4b) is a work piece.
When the front end of (W) reaches between the upper and lower rollers, the upper roller descends to clamp the front end of the work (W) between the lower roller and the lower roller driving device. (Not shown) intermittently rotates and is intermittently transferred in a manner synchronized with the punching operation. [Regarding Transfer Mode] In this embodiment, as shown in (a) to (c) of FIG. 7, the preceding work (W) and the following work (W) have a very small interval (D). The product is punched into the punching section (C) in a continuous manner and is intermittently transferred and punched. Therefore, when the products arranged on the work (W) are continuously punched, the intermediate transfer pitch (P ₁ ) and the product at the trailing edge of the preceding work (W) are punched and the succeeding work (W) is punched. The difference is the seam transfer pitch (P ₂ ) until the product at the top of is punched. The combination of the transfer pitch of one cycle (hereinafter referred to as the transfer mode) in this embodiment is the punching die.
The front end of the work (W) is inserted at a predetermined position (start point position) behind (K) (Fig. 7- (a)) and the succeeding work (W)
This is an intermittent transfer until the front end of is put into the same position .

Specifically, it is as follows. Each work
Set the number of punches to punch all products from (W)
(N), set the number of punches from the time when the succeeding work (W) is inserted at the starting point of the punching section (C) until the time when the preceding work (W) finishes punching the product. If the value (M) is set, the workpiece (W) will be the punched section.
From the time of being put into the starting point position of (C) until the number of punches measured from (M-1) is intermittently transferred at the intermediate transfer pitch (P ₁ ) and becomes the state of (B) in Fig. 7, and then the seam transfer pitch. (P ₂ ) is transferred and the state of (C) in FIG. 7 is reached. After that, intermittent transfer is performed at the intermediate transfer pitch (P ₁ ) and (N−
After punching M times, the state returns to the state of (a) in FIG. 7.

The number of times of punching is measured by a counter (6) (not shown). Further, in order to execute the transfer mode by the combination of the transfer pitches, the first and second linear drive devices of the first and second intermittent transfer devices (4a) and (4b) correspond to the transfer mode of one cycle. The drive signal to perform is repeatedly input. Therefore, each time the count value n of the counter (6) becomes "N", the drive signal corresponding to the transfer mode is input, and the transfer for one cycle is repeated.

The first intermittent transfer device (4a) is an initial transfer for advancing the first clamp device (401) by a predetermined distance (L) from the above-mentioned starting point position in addition to the intermittent transfer of one cycle. It is designed to perform actions. Also, the first
When the front end of the work (W) held by the intermittent transfer device (4a) is clamped between the upper and lower rollers of the second intermittent transfer device (4b), the first clamp device (401) returns to the starting position. To be done.

[Operation of Each Part] In the case of the apparatus of the above embodiment, each part is controlled by the microcomputer. The actual punching operation is shown in the process chart of FIG. 8 and FIG.
A description will be given according to the flowchart shown in FIG. * The suction cup (21) of the suction device (2a) at the feed start point between the stacking position (A) and the relay section (B) is for the work (W) group stacked on the lifter (1). Is near the front edge in the paper feeding direction, and is away from the topmost work (W). Then, after that, the suction device (211) is turned on by the suction signal input, and the air cylinder (26) is positively driven to suck the uppermost work (W). After this, the air cylinder (26) is reversely driven after a certain waiting time (about 0.1 second), and the suction cup (21) returns to the upper starting point position. Through this series of operations, the uppermost work (W) is adsorbed and held by the suction cup (21). The state is set by executing the steps up to step (61) in FIG.

Thereafter, in step (62), the air cylinder (27) is positively driven to move the mounting plate (2
4) is driven to the relay roller (300) side. As a result, the tip of the work (W) sucked 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, an air cylinder (37) for driving the upper roll (3a) to and from the lower roll (3b) is in an initial state, and the upper roller (3a) is moved upward from the lower roller (3b). Being separated.

After that, the air cylinder (37) is normally driven, the upper roller (3a) is brought into contact with the lower roller (3b), the suction device (211) is turned off, and the forward / reverse driving device (31). Reversely drives for a fixed time (about 0.1 seconds), and then for a fixed time (about 1.
It is driven for 7 seconds) and then stopped. This forward rotation drive time is determined by the relationship between the length of the workpiece (W) in the feed direction and the diameter of the lower roller (3b), and this forward rotation drive ensures that the entire workpiece (W) is completely inside the relay section (B). Will be sent. At this time, the air cylinder (27) is reversely driven and returns to the starting point position.・ ・ ・ ・ ・ In the operation above step (63), when two workpieces (W) are adsorbed by the suction cup (21), they are both upper roller (3a) and lower roller (3b).
When it is thrown in during, the upper roller (3a) moves down and the lower roller
Sucker when the two work pieces (W) are pressed between (3b)
The lower roller (3b) is reversely driven for a certain period of time while the suction by (21) is released. On the other hand, the upper roller (3a) is in a state in which reverse rotation is blocked by the one-way clutch (32).

Therefore, the upper work (W) is maintained at the loading position, but the lower work (W) is returned to the stacking position (A) side, and two sheets at a time are relay section (B).
There is no inconvenience of being transferred to. Further, the works (W) returned to the stacking position (A) side are again adsorbed by the adsorbing operation of the adsorbing device (2a) and are re-admitted to the paper feed roll (3).

Therefore, the work returned to the stacking position (A) side
(W) does not adversely affect the work supply operation thereafter. Incidentally, when the lower roll (3b) is rotated in reverse, an overload may be applied to the roll, but in this embodiment, since it is transmitted to the forward / reverse drive device (31) through the torque limiter (33), the setting is made. When the load for maintaining the value is applied, the torque limiter (33) slips, so the forward / reverse drive device and the upper roll (3
No overload on a) and lower roll (3b).

The forward / reverse drive device (31) waits in a state where the air cylinder (37) is reversely driven and the upper roller (3a) is lifted when the forward rotation drive time elapses after the fixed time of reverse rotation. . ... Step (64) The above-mentioned steps (62) to (64) are the work supply steps from the stacking position (A) to the relay section (B).

* Punching section from the relay section (B)
In the initial state of inserting the work (W) into the workpiece (C) , the stopper (45) is projected and the first clamp device (401) is relayed as shown in FIGS. 2, 4, and 8- (a). It is located at the end on the roll (300) side. Then, when the forward drive time of the forward / reverse drive device (31) described above has elapsed and the feeding of the work (W) is completed, the tip of the work (W) is positioned in contact with the stopper (45). ing.

After this, as shown in FIG. 8- (b), the stopper
(45) is lowered (step (65)), and the first intermittent transfer device
The first clamp device (401) of (4a) works at the starting point position.
(W) While clamping the rear end of the first linear drive (4
02) is driven positively, the work (W) is put into the punching section (C), and when the front end of the work (W) reaches the set position, the first linear drive device (402) is temporarily stopped. .

After that, the punching operation is started and the first intermittent transfer device (4a) executes the intermittent transfer operation. Therefore,
The punching operation is executed while the work (W) is transferred in the transfer mode set in advance. Initially, since the work (W) is not put in the part of the punching die (K), the punching mechanism is idled, but the number of punching is counted by the counter (6) from this start. Further, as shown in FIG. 4, the suction operation of the work (W) is executed on the stacking position (A) side, and the suction cup (21) stands by while holding the work (W) by suction.

During this time, at the intermediate transfer pitch (P ₁ ) (M-1)
When the feed is performed once and the feed is performed once at the seam transfer pitch (P ₂ ), and the count value n = M by the counter (6) is reached, the punching die (K) and the workpiece (W) at the beginning are punched. Parts match,
This part will be punched out by the subsequent punching operation. After this, the intermittent transfer by the first intermittent transfer device (4a) is continued, and when the count value n = N ₁ , this is the step (66).
It is judged by. At this time, the front end of the work (W) is inserted between the upper and lower rollers of the second intermittent transfer device (4b) in the open state.

Thereafter, the steps up to step (67) are executed, whereby the transfer by the first intermittent transfer device (4a) is switched to the transfer by the second transfer device (4b). At this time, the first clamping device (401) returns to the starting point position after being in the unclamping state. After that, when the count value n = N ₂ ,
This is determined in step (671), and the trailing edge of the preceding work (W) is disengaged from the stopper (45) .At this point, the linear motion device (451) operates and the stopper (45) moves to the work support plate ( 41) to project upward, and in order to supply the work (W) into the relay roller (300), the steps (62) to (6)
Work supply process (68) consisting of the same operations as 4)
(The specific steps for this are omitted in FIG. 10) and a new work is added to the relay section (B).
(W) is supplied. (FIG. 8- (d)) Incidentally, the step (671) in the above process becomes the above-mentioned first detecting means (551).

After that, the intermittent transfer operation by the second intermittent transfer device (4b) is executed until the stopper (45) is lowered to reach the count value n = N, and when the count value n = N, this is the step ( 691), the counter (6) is reset, and step (69) is executed to perform the work input operation from the relay section (B) to the punching section (C). As a result, the front end of the work (W) is set at the starting point position of the punching section (C). (Fig. 8- (e)) After that, the following work (W) by the first intermittent transfer device (4a)
When intermittent transfer is performed and the count value becomes n = M, the preceding work (W) (scrap) that has been punched is punched
It comes off from (K). (FIG. 8- (g)) After that, the rollers of the second intermittent transfer device (4b) are driven to rotate forward for a certain period of time to discharge the scrap, and after the discharge is completed, the upper part of the second intermittent transfer device (4b) is removed. The roller is lifted to the unclamped state, and the second intermittent transfer device (4b) is returned to the initial state. As a result, punching is continued with only the work (W) held by the first clamp device (401) remaining in the punching section (C). After that, stacking position (A)
At the side, the work suction operation is executed, and after the work supply operation by the air cylinder (26) is executed, the operations of step (66) and thereafter are executed. Then, the count value n = N
_When it becomes ₁ , the state returns to the state of FIG. 8- (c), and then the series of operations described above is repeatedly executed.

In this embodiment, the step (691) corresponds to the above-mentioned second detecting means (550). [Embodiment 2] In the above-mentioned Embodiment 1, the work supporting plate (41) is maintained in a horizontal posture.
May be swingable between a tilted posture and a horizontal posture as shown in FIG.

In this embodiment, the work (W) fed by the relay roller (300) is supported above the frame of the relay section (B), and the work is pivotally supported in the middle thereof. Use the support plate (41). The height of the swing fulcrum is set to be lower than the contact portion between the upper roll (3a) and the lower roll (3b) of the relay roller (300). The vicinity of the end of the work supporting plate (41) on the punching section (C) side is a relay section.
The output shaft of the rotary cylinder (42) provided on the upper surface of the frame (B) is connected via the crank mechanism (43). At the bottom dead center position of the crank mechanism (43), the upper surface of the workpiece support plate (41) connected to the crank mechanism (43) on the punching section (C) side is located at the workpiece loading position (punching die). When the crank mechanism (43) is at the top dead center position below the die upper surface of (K) and the end edge of the work support plate (41) is at a height substantially matching the work loading position, the rotary is set. The height of the output shaft of the cylinder (42) and the sizes of the crank and crank rod of the crank mechanism (43) are set to predetermined values.

In this embodiment, the stopper (45) provided between the edge of the work supporting plate (41) and the punching section (C) does not have to be raised and lowered as in the first embodiment, and its upper end is constant. Is set to the height of. In this embodiment, the height of the upper end of the stopper (45) is determined by the crank mechanism (4
3) is at the bottom dead center position and is set higher than the height when the edge of the punching section (C) side of the work support plate (41) descends, and the crank mechanism (43) is at the top dead center position. It is set lower than the position of the work support plate (41) at that time.

[Regarding Operation of Main Part of Difference] In this embodiment, each part is controlled by the microcomputer as in the first embodiment. The flowchart is not much different from the flowchart of the first embodiment. The flow chart of the second embodiment is omitted. In the case of the apparatus of the above-mentioned Example 2, the operations of Example 1 are the supply operation of the work (W) from the work stacking position (A) to the relay section (B) and the punching section from the relay section (B).
Although the aspect is different in the operation of inserting the work into (C), the operation is the same as that of the first embodiment in other points.

At the time of supplying the work (W) to the relay section (B), the work support plate (41) is set in the inclined posture, and the stopper (45) is the front end of the work support plate (41). Protruding upward from. Therefore, this relay section (B)
The workpiece (W) supplied to the is positioned by this stopper (45). Thereafter, the rotary cylinder (42) drives the crank mechanism (43) to the top dead center position and stops. As a result, the front edge of the work support plate (41) is lifted, and the work support plate (41) set in the horizontal position is at the same height as the die upper surface of the punching die (K), and the stopper (Four
The upper end of 5) is located below the work support plate (41).

Thereafter, as in the case of the first embodiment, at the time of the work input operation at the time of starting the apparatus or at the time when the count value determination step determines that the count value n = N, the work support plate (41 ) Is installed under the first intermittent transfer device (4a), the work (W) is introduced to the starting point position of the punching section (C). After that, when the predetermined intermittent transfer operation described above is executed and then the mode is switched to the intermittent transfer by the second intermittent transfer device (4b), the first clamp device (401) of the first intermittent transfer device (4a) is set as a starting point. Return to position.

When the first clamp device (401) returns to the starting point position, the work support plate (41), which was in the horizontal posture until then, is set to the inclined posture by the operation of the rotary cylinder (42) and the work (W) is moved. It is set to the state of waiting for the supply operation. Other operations are similar to those of the first embodiment. The flow chart of the second embodiment is the same as the first embodiment.
In the flow chart adopted in
The step of "ascending" is set to the step of "setting the work support plate (41) in an inclined posture", and the step of "stopping the stopper (45) is set to" setting the work support plate (41) in a horizontal posture ". The step can be replaced.

[Others] In this embodiment, the relay roller (3
00) and the suction transfer device (2), the work (W) at the stacking position (A) was sequentially loaded into the relay section (B).
The work (W) may be directly fed into the relay section (B) from (A).

Further, the swinging fulcrum of the work supporting plate (41) may be located at another position, and the first clamping device (401) is moved up and down at the starting point position so as to be lifted from the relay section (B) to the punching section. A configuration may be adopted in which the height of support of the work (W) is made to coincide with each other when the work is put into the work and when the work is intermittently transferred. Further, in any of the above embodiments, the count value n of the counter (6)
The means for comparing with the set value (N, N ₁ , N ₂ , M, etc.) is the above-mentioned first detecting means (551) and second detecting means (550), but it is for detecting the position of the work. A position sensor or the like may be used as the first and second detection means.

Further, in any of the above embodiments, the clamping claw of the first clamp device (401) has the work (W) at the starting point position.
The transfer operation was performed while the rear end of the clamp was clamped.However, at the beginning of the transfer operation, the work (W) was pushed out in the unclamped state, and then the clamping claw was pressed so that the workpiece was clamped. The clamp timing of may be set. Further, a clamping claw of a type for clamping the rear side edge of the work (W) may be used.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an overall explanatory diagram of the first embodiment of the present invention.

FIG. 3 is a detailed plan view of the stacking position (A) and the relay section (B).

FIG. 4 is a detailed sectional view thereof.

FIG. 5 is a sectional view of the relay roller (300).

FIG. 6 is a front view of the relay roller (300).

[Fig.7] Illustration of intermittent transfer of workpiece (W) in punching section (C)

FIG. 8 is an explanatory diagram of a series of steps of a paper feeding operation.

FIG. 9 is an explanatory diagram showing the first half of the flowchart of the control device for the paper feeding operation.

FIG. 10 is an explanatory diagram showing the latter half of the flowchart of the control device for the paper feeding operation.

FIG. 11 is an overall explanatory diagram of the second embodiment.

[Explanation of symbols]

 (W) ・ ・ ・ Work (A) ・ ・ ・ Stacking position (B) ・ ・ ・ Relay section (4a) ・ ・ ・ First intermittent transfer device (4b) ・ ・ ・ Second intermittent transfer device (551) ・ ・・ First detecting means (550) ・ ・ ・ Second detecting means (41) ・ ・ ・ Work support plate (45) ・ ・ ・ Stopper

Claims (7)

[Claims] 1. Sheet-like work (W) (W) in a laminated state
The uppermost work (W) of the group is transferred from this stacking position (A) to the subsequent process sequentially by the work input device so that each work (W) at the stacking position (A) is sequentially punched out. In the sheet feeding method that supplies the sheets separately to each other, between the punching section and the stacking position (A), the work loaded by the work loading device from this stacking position (A).
A relay section (B) for waiting (W) is provided, and the work (W) is clamped by a pair of rollers and intermittently transferred to the discharge side of the punching section in the transfer direction of the work (W). In addition to providing the second intermittent transfer device (4b), the relay section (B) has only the rear end or the rear side edge of the work (W) put into the relay section (B) by the sandwiching claw at the starting point position. First intermittent transfer device for clamping the workpiece (W) into the punching section by moving the clamping claw and then intermittently transporting the workpiece (W).
(4a) is provided, and in the punching section, the work (W) is intermittently transferred by the cooperation of the first and second intermittent transfer devices (4a) and (4b) to perform punching processing on the entire area of the work (W). When the punching process for the preceding work (W) has reached a predetermined stage, the succeeding work (W) made to stand by in the relay section (B) is transferred to the first intermittent transfer device (4a). The work (W) is continuously transferred to the preceding work (W) by intermittently transferring the work (W) from the relay section (B) to the punching section, and then a new work (W) is placed at the stacking position (A). ) To the above-mentioned relay section (B). 2. A workpiece put into a punching section.
At the beginning of the transfer of (W), the work (W) is transferred only by the first intermittent transfer device (4a), and at the intermediate stage during punching, both the first and second intermittent transfer devices (4a) (4b) or The work (W) is transferred by one of the intermittent transfer devices, and after the transfer of the work (W) by the first intermittent transfer device (4a) is released, the second intermittent transfer device (4b) on the discharge side. The sheet feeding method according to claim 1, wherein the work (W) is transferred only by (1). 3. When the front end of the preceding work (W) in the punching section is inserted between a pair of rollers of the second intermittent transfer device (4b), the clamping claw of the first intermittent transfer device (4a). After the unclamped state, the sandwiching claw is relay section
After returning to the starting point position of (B), insert the work (W) from the stacking position (A) to the relay section (B), and then, the length of the unprocessed part in the punching section of the preceding work (W). The sheet feeding method according to claim 1 or 2, wherein the following work (W) is introduced from the relay section (B) into the punching section when the length becomes a set length. 4. The holding claw of the first intermittent transfer device (4a) is in an unclamped state while the preceding work (W) is stopped and punching is performed on the work (W), and then the holding claw is transferred to the relay section (B). 4. The sheet feeding method according to claim 3, wherein the sheet is fed back. 5. A stacking position (A) where work (W) is stacked,
The relay section (B) provided between the punching section and the stacking position (A) and the uppermost workpiece (W) at the stacking position (A) are held by suction and wait for the first detecting means described later. A work input device configured to perform an operation of sucking and holding a new work (W) after the work (W) is input to the relay section (B) in response to a first input signal from (551); A substantially horizontal work support plate (41) provided in the relay section (B) to support the work (W) loaded by the loading device, and lifted at the end of the relay section (B) on the punching section side. When the work is driven and the work (W) is loaded into the relay section (B) by the work loading device, it projects upward from the work support plate (41), and below the work support plate (41) after completion of the loading. Stopper (45) that descends to the relay section (B ) The work (W) supported by the work support plate (41) at the starting point position of the end on the side of the work input device by the second input signal from the second detection means (550) described later.
The rear end or the rear side edge is pushed out and clamped at a predetermined timing and is unclamped when it reaches the transfer end point, and the clamp claw is intermittently driven positively by a constant distance at a preset transfer distance interval. It is composed of a first linear drive device that drives the work piece to return to the start position, and inserts the work (W) from the relay section (B) into the punching section and synchronizes the work (W) with the punching operation after the introduction. A first intermittent transfer device (4a) for intermittent transfer and a work (W) for intermittent transfer of a pair of rollers provided on the discharge side of the punching section and intermittently rotating in synchronization with the punching operation. The second intermittent transfer device (4b), the first detection means (551) that outputs a first closing signal when the holding claws of the first intermittent transfer device (4a) return to the starting position, and the punching section. Kuwa A second detection means (550) for outputting a second input signal when the length of the unprocessed portion of the workpiece (W) reaches a set length, and a second detection means (550) for outputting the second input signal. The first intermittent transfer device (4a) moves the work (W) in the relay section (B) by the input signal.
Sheet feeding device configured to be put into the punching section by. 6. A stacking position (A) where work (W) is stacked,
The relay section (B) provided between the punching section and the stacking position (A) and the uppermost workpiece (W) at the stacking position (A) are held by suction and wait for the first detecting means described later. A work input device configured to perform an operation of sucking and holding a new work (W) after the work (W) is input to the relay section (B) in response to a first input signal from (551); A work support plate (41) provided in the relay section (B) for supporting the work (W) input by the input device, and the work support plate (41) is an inclined posture and a work piece that descends forward. (W) can be oscillated between the horizontal position corresponding to the working height and the relay section can be used when the work support plate (41) is in the tilted position.
At the end of the punching section side of (B), the work support plate
A stopper (45) protruding upward from (41) and positioned downward in the horizontal posture, and a second detecting means (550) described later at the starting point position of the end of the relay section (B) on the side of the work input device. Work supported by the work supporting plate (41) by the second input signal of
The rear end or the rear side edge is pushed out and clamped at a predetermined timing and is unclamped when it reaches the transfer end point, and the clamp claw is intermittently driven positively by a constant distance at a preset transfer distance interval. It is composed of a first linear drive device that drives the work piece to return to the start position, and inserts the work (W) from the relay section (B) into the punching section and synchronizes the work (W) with the punching operation after the introduction. A first intermittent transfer device (4a) for intermittent transfer and a work (W) for intermittent transfer of a pair of rollers provided on the discharge side of the punching section and intermittently rotating in synchronization with the punching operation. The second intermittent transfer device (4b), the first detection means (551) that outputs a first closing signal when the holding claws of the first intermittent transfer device (4a) return to the starting position, and the punching section. Kuwa A second detection means (550) for outputting a second input signal when the length of the unprocessed portion of the workpiece (W) reaches a set length, the first detection means (551) The work supporting plate (41) is tilted by a closing signal, and the second detecting means (550)
A sheet having a structure in which the work supporting plate (41) is set in a horizontal posture in response to a second input signal from and the work (W) of the relay section (B) is input to the punching section by the first intermittent transfer device (4a). Supply device. 7. A part of the work support plate (41) is connected to an output part of the driving means, and when the output part is located at one end of the moving range, the work support plate (41) is in a tilted posture, and when it is located at the other end, it is horizontal. The sheet feeding device according to claim 5, wherein the sheet feeding device has a posture.