JPS6037228A - Sheet material transporting device - Google Patents

Abstract

PURPOSE:To work highly efficiently without producing an idle in working by automatically carrying in and out a sheet material and making the distance between the rear and front edges of preceding and succeeding materials to be zero. CONSTITUTION:When the rear edge of the 1st sheet of sheet material is located at the upstream side of an upstream-side intermittent feeding means 14, the 2nd sheet of sheet material is advanced by a carry-in means 18 to guide its front edge-part onto the upper surface of a guiding member 94. The 2nd sheet material is piled by locating its front edge at the upper side of the rear edge of the 1st sheet material and keeping a slight distance between both edges. The distance between them is properly set by adjusting the position of the front and rear direction of a backward-movement preventing member 96. Accordingly, the 1st material which is being advanced by a downstream-side intermittent feeding means 16 and the 2nd material which is being advanced by an upstream-side intermittent feeding means 14, are intermittently advanced through a working zone 10 just as a single continuous sheet material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet material transport system, and more particularly to a sheet material transport system for transporting sheet material through a processing area of a processing machine, such as a press forming machine.

For example, in the manufacture of metal container lids, a sheet material made of an appropriate metal such as an aluminum-based alloy, chromic acid-treated steel, or tinplate is press-formed to form a container lid in a desired shape. In this case, due to the fact that a plurality of container lids are formed from one sheet material, the sheet material is It is necessary to advance the needle intermittently by a predetermined number of needles. That is, during the operation period when the forming tool of the press forming machine actually acts on the sheet material to perform press processing, the sheet material is kept stationary,
It is necessary to advance the sheet material by a predetermined amount every time the forming tool of the press forming machine does not act on the sheet material. In order to perform press forming continuously and with high efficiency, it is necessary to advance the next sheet material into the processing area following the previous sheet material, and thus convey the sheet materials one after another through the processing area. It is.

Various types of sheet material conveying devices have already been developed and put into practical use to meet such demands, but conventional sheet material conveying devices have the following features: (1) intermittent Carrying the sheet material to the feeding start position and/or
or the sheet material must be manually removed from the end position of the intermittent feed downstream of the processing area (
2) Fully automatic versions have also been developed in which the above-mentioned loading and/or unloading of sheet material can be carried out automatically; There are problems and drawbacks, such as the fact that there is inevitably a gap between the presses and the press-forming due to the gap, so-called play is generated in the press-forming, and therefore the press-forming cannot be carried out with a sufficiently high efficiency.

The present invention has been made in view of the above facts, and its main purpose is to provide a sheet material conveying device for conveying sheet material through the processing area of a processing machine such as a press forming machine, and to The loading of the sheet material to the intermittent feed start position and the unloading of the sheet material from the intermittent feed end position downstream of the processing area are also automatically carried out, and the sheet material is transported intermittently through the processing area. If necessary, the distance between the trailing edge of the material and the leading edge of the next sheet material can be made virtually zero, so that the required machining by the processing machine can be performed with a sufficiently high efficiency without creating any so-called play. An object of the present invention is to provide a new and excellent sheet material conveying device that enables processing of sheets.

According to the present invention, the sheet material conveyance for conveying the sheet material through the processing area of the processing machine in which the working period in which the sheet material is processed and processed and the non-working period in which the sheet material is not acted on are repeated. The device is selectively brought into an inactive state and an active state, wherein in the inactive state it does not effectively act on the sheet material, and in the active state it does not move the sheet material as desired during each period of inactivity of the processing machine. an upstream intermittent feed means disposed upstream of the processing area, capable of advancing in fixed amounts, and selectively brought into an inactive state and an actuated state, and in the inactive state being effective for sheet material; downstream intermittent feeding means disposed on the downstream side of the processing area, which is capable of advancing the sheet material by a predetermined amount at each non-operation period of the processing machine in the operating state; the upstream intermittent feed which is selectively brought into an inactive state and an activated state, wherein the upstream intermittent feed is ineffectively acting on the sheet material in the inactive state and capable of continuously advancing the sheet material in the activated state; a conveying means disposed upstream of the means and selectively brought into an inactive state and an activated state, wherein in the inactive state it does not effectively act on the sheet material and in the activated state it continuously transports the sheet material; a carry-out means disposed on the downstream side of the downstream intermittent feed means, the upstream intermittent feed means, the downstream intermittent feed means, the carry-in means, and the carry-out means; and control means for controlling: 0) causing the carrying means to be in the operative state when the upstream intermittent feeding means is in the inactive state; and (b) causing the carrying means to be in the operative state. When the leading edge of a sheet of material being advanced by the input means in the activated state is conveyed into the upstream intermittent feed means, the input means is brought into the inactive condition and the input means is moved into the activated condition. When the leading edge of the sheet material being intermittently advanced by the upstream intermittent feeding means is fed into the downstream intermittent feeding means, the upstream intermittent feeding means is brought into the inoperative state. , causing the downstream intermittent feeding means to be in the actuated state; When leaving the feeding means, the upstream intermittent feeding means is brought into the operating state, and (
e) When the trailing edge of the sheet material being intermittently advanced by the downstream intermittent feeding means in the activated state leaves the processing area, the downstream intermittent feeding means is brought into the inactive state. , causing the carrying out means to be in the operating state, (to)
There is provided a sheet material conveying device characterized in that when a trailing edge of the sheet material being advanced by the discharge means in the activated state leaves the discharge means, the conveyance means is brought into the inoperative state. Ru.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A more detailed description will now be given of an embodiment of a sheet material conveying apparatus constructed in accordance with the present invention with reference to the accompanying drawings.

Referring to FIG. 1, in the illustrated embodiment there is shown a sheet material conveying device, generally indicated by the number 4, constructed in accordance with the invention, in conjunction with a processing machine 2, schematically indicated in dash-dotted lines. Equipped.

The illustrated processing machine 2 is a press molding machine having a stationary lower part 6 and a movable upper part 8. A processing area 10 is defined between the stationary lower part 6 and the movable upper part 8.

The movable upper part 8 is located between the uppermost position indicated by the two-dot chain line 8A and the two-dot chain line 8.
It can be moved up and down between the lowest position indicated by B. During the operation period when the movable upper part 8 is below the predetermined position,
A forming tool (not shown) provided in the stationary lower part 6 and a forming tool (not shown) provided in the movable upper part 8 act on the sheet material present in the processing area 10 and press it. Add molding. During the non-operating period when the movable upper part 8 is above a predetermined position, the forming tool (not shown) provided on the movable upper part 8 is in the machining area 1.
upwardly away from the sheet material present at 0. Processing machine 2
To further refer to the above-mentioned working and non-working periods, FIG. 2 schematically shows the rotational movement of the crank 12 provided in the lifting mechanism that moves the movable upper part 8 of the processing machine 2 up and down. There is. Referring to FIG. 2 together with FIG. 1, when the crank 12 that is rotated at a constant speed is at the top dead center indicated by the symbol A, the movable upper part 8 is located at the uppermost position indicated by the two-dot chain line 8A, and the 180 from top dead center A
When the movable upper part 8 rotates once and reaches the bottom dead center indicated by the symbol B, the movable upper part 8 is located at the lowest position indicated by the two-dot chain line 8B. For example, while the crank 12 rotates from the angular position indicated by the symbol C through the bottom dead center B to the angular position indicated by the symbol C, the forming tool (not shown) provided on the movable upper part 8 remains stationary. Forming tool provided in the lower part 6 (not shown)
acts on the sheet material present in the processing area 10 to apply press forming. That is, while the crank 12 rotates from the angular position indicated by the symbol C through the bottom dead center B to the angular position indicated by the symbol, the processing machine 2 is in its working period, and the crank 1
2 passes through the top dead center A from the angular position indicated by the symbol C
The processing machine 2 is in a non-operating period while rotating to the angular position shown by .

Referring again to FIG. 1, the illustrated sheet material conveying device 4 includes an upstream intermittent feeding means 14 disposed on the upstream side of the processing area 10, and an upstream intermittent feeding means 14 disposed on the downstream side of the processing area 10. A downstream intermittent feeding means 16 provided, a carrying-in means 18 provided upstream of the upstream intermittent feeding means 14, and an unloading means 2 provided downstream of the downstream intermittent feeding means 16.
0 and a supply means 22 disposed upstream of the carrying means 18.

The configurations of the upstream intermittent feeding means 14 and the downstream intermittent feeding means 16 in the illustrated specific example will be described in more detail later, but are necessary for understanding the overall operation and effect of the sheet material conveying device 4. The outline of the configuration of the upstream intermittent feeding means 14 and the downstream intermittent feeding means 16 within the conceivable range is as follows.

The upstream intermittent feeding means 14 includes stationary gripping means 26 and movable gripping means 28 . The movable gripping means 28 is reciprocated between a retreat position shown by a solid line and a forward position shown by a two-dot chain line. Such reciprocating movement of the movable gripping means 28 is carried out in synchronization with the vertical movement of the movable upper part 8 of the processing machine 2 as required. Referring to FIG. 2 together with FIG. 1, the crank 12 shown in FIG. While rotating through an angular range of 180 degrees to the angular position indicated by the symbol F (i.e., the angular position rotated 90 degrees from the top dead center A), the movable gripping means 28 moves from the retracted position indicated by the solid line to the angular position indicated by the two-dot chain line. It is moved forward to the forward position shown by.

Then, while the crank 12 rotates over an angular range of 180 degrees from the angular position indicated by the symbol F to the angular position indicated by the symbol E, the movable gripping means 28 moves from the forward position indicated by the two-dot chain line to the solid line. The vehicle will be moved backwards to the reverse position shown by . Each of the stationary gripping means 26 and the movable gripping means 28 includes:
Each has upper gripping pieces 30 and 32 located above the conveyance path of the sheet material, and lower gripping pieces 34 and 36 located below the conveyance path of the sheet material. Upper grip piece 3
0 and 32 are each fixed to the body of the stationary gripping means 26 and the movable gripping means 28, respectively.

On the other hand, each of the lower gripping pieces 34 and 36 is attached to the main body portions of the stationary gripping means 26 and the movable gripping means 28, respectively, so as to be able to rise and fall. As will be described in detail later, each of the lower gripping pieces 34 and 36 is lowered to a non-operative position by the elastic biasing action of a spring means (not shown) in the non-operating state when the on-off valve 38 is closed. ing. In such a non-operating state, the upper gripping piece 30 and the lower gripping piece 34 of the stationary gripping means 26 and the upper gripping piece 32 and the lower gripping piece 36 of the movable gripping means 28 are respectively located apart from each other, It does not grip the sheet material that exists between them. Therefore, the upstream intermittent feeding means 14 does not act effectively on the sheet material. On the other hand, when the on-off valve 38 is opened and activated, air pressure is supplied from the air pressure source 39 to the main body of the stationary gripping means 26 and the main body of the movable gripping means 28, and the lower gripping piece 34 is
and 36 are forced upwardly into the operative position against the elastic biasing action of the spring means (not shown). When the lower gripping pieces 34 and 36 are raised to the operative position, each of the lower gripping pieces 34 and 36 cooperates with the upper gripping pieces 30 and 32, respectively, to grip the sheet material therebetween. Each of the stationary gripping means 26 and the movable gripping means 28 is further provided with forced lowering means (not shown in FIG. 2) comprised of a cam mechanism, as will be explained in detail later. The forced lowering means provided in the stationary gripping means 26 acts on the lower gripping piece 34 while the movable gripping means 28 moves forward from the retracted position shown by the solid line to the forward position shown by the two-dot chain line, and the forced lowering means acts on the lower gripping piece 34 to prevent the action of the air pressure. The lower gripping piece 34 is forcibly lowered to the non-operating position against the Even during a part of the backward movement from the forward position shown by the two-dot chain line to the backward position shown by the solid line, the lower gripping piece 34 is acted upon, and the lower gripping piece 34 is deactivated for a short period of time against the action of the air pressure. (forced to descend into position).

On the other hand, the forced lowering means provided in the movable gripping means 28 acts on the lower gripping piece 36 while the movable gripping means 28 moves backward from the forward position shown by the two-dot chain line to the backward movement position shown by the solid line. The lower gripping piece 36 is forcibly lowered to the non-operating position against the action of. Therefore, when the on-off valve 38 is opened and put into operation, the upstream intermittent feeding means 14 moves the movable gripping means 28 from the retracted position shown by the solid line to the forward position shown by the two-dot chain line. It will be readily appreciated that each advance advances the sheet material intermittently by the amount of advance of the movable gripping means 28. That is,
While the movable gripping means 28 moves forward from the retracted position shown by the solid line to the forward position shown by the dashed line, the lower gripping piece 34 of the stationary gripping means 26 is in the inactive position, and therefore the upper gripping piece of the stationary gripping means 28 30 and the lower gripping piece 34 do not grip the sheet material, but the lower gripping means 3 of the movable gripping means 28
6 is in the working position, so that the upper gripping means 32 and the lower gripping piece 36 of the movable gripping means 28 cooperate to grip the sheet material, so that as the movable gripping means 28 moves forward, the sheet material moves forward. I am forced to do it. On the other hand, while the movable gripping means 28 moves backward from the forward position shown by the two-dot chain line to the backward movement position shown by the solid line, the lower gripping piece 36 of the movable gripping means 28 is in the non-operating position, and therefore the lower gripping piece 36 of the movable gripping means 28 Although the gripping piece 32 and the lower gripping piece 36 are capable of gripping the sheet material,
The lower gripping piece 34 of the stationary gripping means 26 is in the active position (
As mentioned above, the upper gripping piece 30 and the lower gripping piece 3 of the stationary gripping means 26 are in the non-operating position for some time).
4 cooperate with each other to grip the sheet material, so that the sheet material is kept stationary without moving backwards in conjunction with the backward movement of the movable gripping means 28.

The downstream intermittent feeding means 16 also includes stationary gripping means 40 and movable gripping means 42 . Like the movable gripping means 28 in the upstream intermittent feeding means 14, the movable gripping means 42 moves the crank 12 shown in FIG. 18 to position
While rotating over an angular range of 0 degrees, it is advanced from a retreat position shown by a solid line to a forward position shown by a two-dot chain line,
Then, while the crank 12 rotates over the remaining 180 degree angle range from the angular position indicated by the symbol F to the angular displacement indicated by the symbol E, from the forward position indicated by the two-dot chain line to the backward position indicated by the solid line. Forced to move backwards. The configurations of the stationary gripping means 40 and the movable gripping means 42 of the downstream intermittent feeding means 16 are substantially the same as those of the stationary gripping means 26 and 28 of the upstream intermittent feeding means 14, so a description thereof will be omitted. Similarly to the above-mentioned upstream intermittent feeding means 14, in the downstream intermittent feeding means 16, when the on-off valve 44 is closed, the lower gripping piece 46 of the stationary gripping means 40 and the movable gripping means The lower gripping piece 48 of 42 is lowered to a non-active position so that the downstream intermittent feed means 16 does not effectively act on the sheet material. On the other hand, when the on-off valve 44 is opened and put into operation, the downstream intermittent feeding means 16 moves from the retracted position shown by the solid line to the movable gripping means 42 by 2.
The sheet material is intermittently advanced by the amount of advance of the movable gripping means 42 each time it advances to the forward position shown by the dotted chain line.

That is, while the movable gripping means 42 moves forward from the retracted position shown by the solid line to the forward position shown by the two-dot chain line, the lower gripping piece 46 of the stationary gripping means 40 is in the non-operating position, and therefore the lower gripping piece 46 of the stationary gripping means 40 Although the gripping piece 50 and the lower gripping piece 46 do not grip the sheet material, the lower gripping piece 48 of the movable gripping means 42 is in the active position, so that the upper gripping piece 52 and the lower gripping piece 48 of the movable gripping means 42 cooperate. The movable gripping means 42 act to grip the sheet material such that the sheet material is advanced in response to advancement of the movable gripping means 42.

On the other hand, while the movable gripping means 42 moves backward from the forward position shown by the two-dot chain line to the backward position shown by the solid line, the lower gripping piece 48 of the movable gripping means 42 is in the non-operating position, and therefore the upper gripping piece 48 of the movable gripping means 42 Since the gripping piece 52 and the lower gripping piece 48 do not grip the sheet material, the lower gripping piece 46 of the stationary gripping means 40 is in the operative position (albeit briefly in the inactive position as mentioned above) and is therefore stationary. The upper gripping piece 50 and the lower gripping piece 46 of the gripping means 40 cooperate to grip the sheet material, so that the sheet material is maintained in a stationary state without moving backward as the movable gripping means 42 moves backward. .

The carrying means 18 in the illustrated example is constituted by a roller pair consisting of an upper roller 54 disposed above the sheet material conveyance path and a lower roller 56 disposed below the sheet material conveyance path. ing. At least one of the upper roller 54 and the lower roller 56, in the case shown the lower roller 56, is drivingly connected to a reversible electric motor 58 and selectively rotated by the motor 58 in the forward direction, ie, in the direction indicated by arrow 60, or in the reverse direction, ie, the direction indicated by the arrow 60. It is driven in the direction shown by arrow 62. In addition, the upper roller 54 and the lower roller 56 are mounted so that they can move up and down between the working position shown by the solid line and the non-working position shown by the two-dot chain line. When the actuator 64, such as a hydraulic cylinder mechanism or solenoid, connected to the upper roller 54 is deenergized, the upper roller 54 is positioned in the non-actuating position shown by the dash-dotted line; When 64 is energized, upper roller 54 is positioned in the active position shown in solid lines. Such loading means 18 can be selectively activated, reversed or inactivated, as will become clear from the subsequent description.

In the actuated state, the actuator 64 is energized to lower the upper roller 54 to the operative position shown in solid lines, thus causing the upper roller 54 and the lower roller 56 to nip the sheet material present between them and causing the motor to 58 is driven forward to cause lower roller 56 to rotate forward in the direction indicated by arrow 60, thus continuously advancing the sheet material. In the reverse operating condition, motor 58 is driven in reverse to reverse lower roller 56 in the direction indicated by arrow 62, thus reversing the sheet material. On the other hand, in the non-operating state, the motor 58 is deenergized to stop the lower roller 56 from rotating, and the actuator 64 is deenergized to stop the upper roller 54 from rotating.
is raised to a non-active position as indicated by the dash-dotted line and separated from the sheet material. Therefore, in the inactive state, the conveying means 18 do not act effectively on the sheet material.

Next, referring to the above-mentioned carry-out means 20, the illustrated carry-out means 20, like the above-mentioned carry-in means 18, has an upper roller 66 disposed above the sheet material conveyance path and a lower roller 66 disposed below the sheet material conveyance path. A lower roller 68 disposed in
It is composed of a roller pair consisting of. Upper roller 6
6 and lower roller 68, in the case shown lower row 268, is drivingly coupled to an electric motor 70 and selectively driven in the normal direction, ie, in the direction indicated by arrow 72, by motor 70. At least one of the upper roller 66 and the lower roller 68, in the case shown, the upper roller 6
The upper roller 66 is mounted so as to be movable up and down between the working position shown by the solid line and the non-working position shown by the two-dot chain line.
When the FC flow fluid pressure 75 is deenergized, the upper roller 66 is positioned at the non-operating position shown by the two-dot chain line, but when the actuator 74 is energized, the upper roller 66 is positioned at the active position shown by the solid line. As will become clear from the following description, such a discharging means 20 can be selectively activated or deactivated.

In the actuated state, the actuator 74 is energized to lower the upper roller 66 to the operative position shown in solid lines so that the upper roller 66 and the lower roller 68 nip the sheet material present between them and Motor 70 is driven to rotate lower roller 68 in the direction indicated by arrow 72;
The sheet material is thus continuously advanced. On the other hand, in the non-actuated state, the actuator 74 is de-energized and the upper roller 66 is raised to the non-active position shown in phantom and away from the sheet material. Therefore, in the non-actuated state, the delivery means 20 can effectively act on the sheet material. At this time, the motor 70 may be de-energized to stop the rotation of the downward roller 68, but as will be clear from later discussion, the motor 70 continues to rotate in the illustrated embodiment.

The supply means 22 disposed at the upstream end of the sheet material conveying device 4 includes a sheet material storage section 76 that stores a large number of sheet materials in a stacked state, and a sheet material storage section 7 that accommodates a large number of sheet materials in a stacked state.
and a discharge means 78 disposed downstream of 6.

The ejecting means 78 is composed of a roller pair consisting of an upper roller 80 and a lower roller 82. At least one of the upper roller 80 and the lower row 282, the lower roller 82 in the illustrated case, is drivingly coupled to an electric motor 84;
It is selectively driven forward by motor 84, that is, in the direction indicated by arrow 86. In addition, the upper roller 80 and the lower roller 8
At least one of the rollers 2 and 2, in the illustrated case the upper roller 80, is mounted so as to be movable up and down between an active position shown by a solid line and a non-working position shown by a two-dot chain line, and is connected to the upper roller 80. When the actuator 88, such as a hydraulic cylinder mechanism or solenoid, is deenergized, the upper row 280 is located in the inactive position shown in phantom, but when the actuator 88 is energized, the upper row 280 80 is positioned at the operating position shown by the solid line. Such supply means 22 can also be selectively activated or deactivated, as will become clear from the description below. In the operating state, the actuator 8
8 is energized to lower the upper roller 80 to the operating position shown in solid lines, the motor 84 is energized to rotate the lower roller 82 in the direction shown by arrow 86, and 1
The delivery means disposed in the sheet material receptacle 76 (which delivery means may consist of any suitable mechanism, such as an extrusion piston) is activated. Thus, a piece of sheet material is delivered from the sheet material storage portion 76 to the nip between the upper roller 80 and the lower roller 82, and the sheet material is advanced by the cooperation of the upper roller 80 and the lower roller 82 to form the above-mentioned sheet material. It is supplied to the carrying means 18.

In the inoperative state, motor 84 is deenergized to stop rotation of lower roller 82, and actuator 88 is deenergized to raise upper roller 80 to the inactive position shown in dash-dotted lines. Furthermore, the above-mentioned delivery means provided in the sheet material storage section 76 is not operated.

The illustrated sheet material conveying device 4 further includes a guide frame 90 extending between the supply means 22 and the upstream intermittent feeding means 14 and a guide frame 92 extending downstream from the downstream intermittent feeding means 16. is provided. The sheet material conveyed from the supply means 22 to the upstream intermittent feed means 14 is transported by the guide frame 9.
The sheet material being conveyed downstream from the downstream intermittent feeding means 16 is guided to the upper surface of the guide frame 92.

A guide part 94 is disposed on the guide frame 90 between the conveying means 18 and the upstream intermittent feeding means 14 so as to be adjustable in position in the front-rear direction. The guide member 94, which is biased in the state shown by spring means (not shown) elastically biasing the downstream end side upwardly, is substantially perpendicular with the upper surface inclined upwardly towards the downstream end (11i11). A backward movement prevention member 96 is further disposed on the guide frame 90 and is adjustable in position in the forward direction between the supply means 22 and the carry-in means 18.The guide member 90 has a dancing surface. Similar to 94, the backward movement prevention member 96, which is biased in the illustrated state by a spring means (not shown) elastically biasing the downstream end upward, also has an upper surface inclined upwardly toward the downstream side. and a substantially vertical front surface.Reverse movement prevention member 96
A restraining means 98 is disposed at a position somewhat downstream. This restraining means 98 is mounted so as to be able to move up and down between an operating position shown by a solid line and a non-working position shown by a two-dot chain line.

In a non-actuated state in which an actuator 100, such as a hydraulic cylinder mechanism or solenoid, connected to the restraint means 98 is de-energized, the restraint means 98 is positioned in an inactive position shown in phantom lines and the seat is closed. It is powerful to act on materials. However, when the actuator 100 is energized and activated, the restraint means 98 is lowered into the operative position shown in solid lines and presses the sheet scrap present therebelow onto the guide frame 90, thus To reliably prevent movement of sheet material.

In the illustrated sheet member conveying device 4, a means for detecting the next pass is provided in order to control the operation of the various operating components of the pass described above.

That is, the backward movement prevention member 9 is also located on the upstream side of the carrying means 18.
Immediately downstream of 6, an incoming sheet material detection means 102 is disposed such that its position can be freely adjusted in the front-rear direction. Carrying means 1
8, a supplied sheet material detection means 104 is disposed such that its position can be freely adjusted in the front-rear direction. Furthermore, downstream of the carrying-out means 2o, there is a carrying-out sheet debris detection means 106.
is arranged so that its position can be freely adjusted in the front-rear direction. These detection means 102, 104, and 106 are optical elements which are well known per se and serve as a light-emitting element and a light-receiving element that receives reflected light emitted from the light-emitting element and reflected by the sheet IJ material when a sheet material is present. It can be constructed from a target detector.

The illustrated sheet material conveying device 4 further includes one of the processing machines 2.
Signal generating means are provided for generating a signal for each cycle, and therefore for each of the above-mentioned periods of inactivity or activation of the processing machine 2. Referring to FIG. 2, in the embodiment shown, the signal generating means 108 comprises a detector arranged in connection with the crank 12, for example when the crank 12 is designated F. A pulse signal is generated every time the angle position is reached.

Referring to FIG. 3, the illustrated sheet material conveying device 4 includes a controller 110 that controls the operation of the various operating components described above based on the output signals of the respective citron detection means, etc. described above. is also equipped.

The illustrated controller 110 includes first to third counters i 5
．． 2, 114 and 116, and a microprocessor incorporating timer means 120.

In conjunction with FIGS. 1 to 3, the illustrated sheet material conveying device 4
The operating procedure of the illustrated sheet material conveying device 4 will be explained with reference to FIG. 4, which is a time chart showing the operating procedure.

(1) First, the sheet material conveying device automatic operation start switch 122 (FIG. 3) is manually closed. Thus, the motor 84 and actuator 88 of the supply means 22 are energized, the supply means 22 is activated, and the first sheet material begins to be supplied from the supply means 22. Further, the motor 70 of the carry-out means 20 is energized, and the carry-out means 2
0 lower roller 68 is rotated forward.

(I+) The front edge of the first sheet material is the carrying means 18
When the leading edge t (up to the detection position of the supplied sheet material detection means 104) of the first sheet material is reached, the supplied sheet material detection means 104 begins to generate an output signal.

Thus, the motor 84 and actuator 88 of the supply means 22
is deenergized and the supply means 22 is rendered inactive. Next, after a certain period of time (for example, 0.1 seconds) prescribed by the timer means 120 has elapsed, the motor 58 of the carrying means 18 is driven to rotate in the normal direction, and the actuator 64 is energized, so that the carrying means 18 is in the operating state. I am forced to do it. Thus, the first sheet material supplied to the carrying means 18 is transferred to the carrying means 1.
Continuously advanced by 8.

(ilil) The first sheet material is advanced and its leading edge is carried into the upstream intermittent feeding means 14, and the ridge edge of the first sheet material is transported into the carried sheet material detection means 102.
When passing through the detection position, the incoming sheet material detection means 10
2 output signal disappears.

As a result, the motor 58 of the carrying means 18 is deenergized and its forward rotation is stopped. However, the loading means 18
Upper roller 54 and lower roller 56 continue to rotate slightly in the normal direction due to inertia, thus causing the first sheet of material to advance slightly further. Then, after a certain amount of time (for example, 0.1 seconds) defined by the timer means 120 has elapsed, the motor 58 of the carrying-in means 18 is driven in the reverse direction, and the carrying-in means 18 is brought into a reverse operating state.

Further, after a certain period of time (for example 0.3 seconds) defined by the timer means 120, the motor 58 and actuator 64 of the loading means 18 are de-energized, rendering the loading means 18 inactive. At the same time, the actuator 100 of the restraint means 98 is energized to cause the restraint means 98 to be activated. As mentioned above, during the short period of time (for example, 0.3 seconds) during which the carrying-in means 1B is in full reverse operation, the first sheet material is moved backward by the carrying-in means 18, and then The edge abuts the front surface of the reversing closing member 96. Since the carrying-in means 18 is brought into a non-operating state and the restraining means 98 is brought into an operative state at the same time, as shown in FIG. 5, the first sheet material S1
is positioned and restrained with sufficient precision at a predetermined position where its trailing edge abuts against the front surface of the backward movement closing member 96, that is, at the intermittent feeding start position. Thus, the preparation process for starting the operation of the processing machine 2 is completed.

(1v) Next, the operation start switch 124 (FIG. 3) of the processing machine 2 is manually closed. Thus, some amount of time (e.g. 0.
6 seconds), the control clutch means 1 in the processing machine 2
26 (FIG. 3) is actuated to drively couple the processing machine 2 to a drive temperature (not shown). Thus, the movable upper part 8 of the processing machine 2 starts to move up and down. Movable upper part 8 of processing machine 2
The vertical movement of the crank 12 starts from the uppermost position (the position indicated by the two-dot chain line 8B in FIG. 1), and therefore the crank 12 shown in FIG.
starts rotating from top dead center A. At the same time, the movable gripping means 26 of the upstream intermittent feeding means 14 and the downstream intermittent feeding means 1
The movable gripping means 42 of 6 starts reciprocating motion in synchronization with the required passage of 120 revolutions of the crank (however, at this point, the upstream intermittent feeding means 14 and the downstream intermittent feeding means 16 is inactive).

(Vl Control clutch means 126 of processing machine 2 (Fig. 3)
When the crank 12 (FIG. 2) is activated and starts rotating, the signal generating means 108 generates a pulse signal every time the crank 12 reaches an angular position indicated by F. When the signal generating means 108 generates the first pulse signal, the first to third counters 112, 114 and 116 are reset and start counting the pulse signals.

When the first counter 112 is reset, the actuator 100 of the restraining means 98 is deenergized and the restraining means 98 is put into a non-operating state, and the on-off valve of the upstream intermittent feeding means 14 is reset. 38 is opened and the upstream intermittent feeding means 14 is put into operation. Thus, the upstream intermittent feeding means 14 begins to advance the first sheet material intermittently. At the same time, the motor 84 and the actuator 88 of the supply means 22 are energized to put the supply means 22 into operation, and the second sheet of material begins to be supplied from the supply means 22.

(vl) When the leading edge of the second sheet material supplied from the supply means 22 is supplied to the carrying-in means 18 and the leading edge of the second sheet material reaches the detection position of the supplied sheet material detection means 104; , the feed sheet material detection means 104 begins to generate an output signal.

Thus, the continuous operating procedure described in (11) above is performed.

(vlD Second counter 1 that started counting at (ψ)
14 counts a predetermined number N2 (for example, 12), the on-off valve 38 of the upstream intermittent feeding means 14 is closed to put the upstream intermittent feeding means 14 into a non-operating state, and at the same time, the downstream intermittent feeding means The 16 on-off valves 44 are opened and the downstream intermittent feeding means 16 is put into operation. At this point, as shown in FIG.
1 is fed into the downstream intermittent feeding means 16. Therefore, the first sheet material S1 is intermittently advanced by the downstream intermittent feeding means 16.

Further, when the 30th counter 116 that started counting at M counts a predetermined number N3 (for example, 12), after a certain amount of time (for example, 0.1 seconds) prescribed by the timer means 120 has elapsed, the motor of the carrying means 18 58 is driven to rotate in the normal direction, and the actuator 64 is energized to put the carrying means 18 into operation. Thus, the second sheet material supplied to the loading means 18 is continuously advanced by the loading means 18.

In the illustrated example, the predetermined number N3 counted by the third counter 116 is set to be the same as the predetermined number N2 counted by the 20th counter 1i14, but the predetermined number N3 counted by the third counter 116 is The number N3 is the carrying means 18
It is appropriately set according to the relative relationship between the forward speed of the sheet material and the operating speed of the processing machine 2 (therefore, the upstream intermittent feeding means 14 and the downstream intermittent feeding speed).

(Viil) The second sheet material is advanced, its leading edge is carried into the upstream fl11 intermittent feeding means 14, and the trailing edge of the second sheet material is detected by the carried-in sheet material detection means 102. After passing through the position, the output signal of the incoming sheet material detection means 102 disappears. In this way, the continuous actuator 11& described in 011) above is executed,
The second sheet material is positioned with sufficient precision at a predetermined position where its trailing edge abuts against the front surface of the backward movement stopper 96, ie, at the intermittent feeding start position.

Thus, as shown in FIG. 7, the second sheet material S
When 2 is positioned at the intermittent feeding start position, 1
The trailing edge of the sheet material $1 is located upstream from the upstream intermittent feeding means 14. However, when the second sheet material S2 is advanced by the carrying-in means 18, its front edge is guided by the upper surface of the guide member 94 and is slightly displaced upward, so that the second sheet material S2
The leading edge of the first sheet material S2 does not collide with the ridge edge of the first sheet material S1, but moves above the ridge edge of the first sheet material S1 as shown in FIG. The layers are stacked with a slight interval between them. Therefore, the first sheet material S1
Even if there is a burr due to shearing on the edge of the sheet, it is avoided that the burr comes into contact with the lower surface of the second sheet material S2 and damages it.

0x) The first counter 112 that started counting at υ) above
counts a predetermined number Nl (for example, 20), the first counter 112 itself is reset and starts counting again, and the second counter 114 and the third counter 11
6 is reset and starts counting again. And Maki 1
When the counter 112 of 1) is set, the operating procedure as described in (2) above is carried out, and the second sheet material is intermittently advanced by the activated upstream intermittent timing means 14. At the same time, the third sheet material begins to be fed from the activated feeding means 22.

As shown in FIG. 9. It is important that the stacked state between the edge of the first sheet material S1 and the front edge of the second sheet material S2 is released. The trailing edge of the first sheet material S1 and 2
The distance between the leading edge of the sheet material S2 and the leading edge of the sheet material S2 can be appropriately set, for example, by adjusting the position of the withdrawal prevention member 96 in the backward direction, and if desired, it can be made into a substantially tower. . Therefore, the first sheet material S1 being intermittently advanced by the downstream intermittent feeding means 16 and the second sheet material S2 being intermittently advanced by the upstream intermittent feeding means 14. can be advanced intermittently through the processing area 10 as if it were a single continuous sheet of material, allowing the processing machine 2 to perform the required processing with sufficiently high efficiency without creating so-called play. can be carried out.

The leading edge of the third sheet material supplied from the supplying means 22 is supplied to the carrying-in means 18, and when the leading edge of the third sheet material reaches the detection position of the supplied sheet material detecting means 104, the supply stops. The sheet material detection means 104 begins to generate an output signal.

Thus, the nine operating procedures described in (11) above are performed.

(×0 As shown in FIG. 9, the downstream intermittent feeding means 1
When the trailing edge of the first sheet material S1, which is being advanced intermittently by 6, leaves the processing area 10, 511
The leading edge of the sheet material S1 reaches the detection position of the outgoing sheet waste detection means 106, and the outgoing sheet waste detection means 106 therefore begins to generate an output signal. As a result, the on-off valve 44 of the downstream @1 intermittent feeding means 16 is closed, and the downstream @1 intermittent feeding means 16 is made to be inactive. At the same time, the actuator 74 of the unloading means 20 is energized to cause the unloading means 20 to be activated.

Thus, the first sheet material is continuously advanced by the delivery means 2°.

Then, after a predetermined period of time (for example, 2 seconds) defined by the timer means 120 has elapsed, the actuator 74 of the delivery means 20 is deenergized and the delivery means 2o is rendered inactive. The predetermined time defined by the timer means [0 is set to a time sufficient for the transfer portion of the first sheet material being conveyed by the unloading means 2° to be discharged and separated from the unloading means 20. .

In such a case, the operation procedure from viD onward is repeated. To stop the operation of the sheet material conveying device 4 and the processing machine 2, manually close the stop switch 126 (FIG. 3). In this way, for example, when the crank 12 (Fig. 2) reaches the top dead center A, the movable upper part 8 of the processing machine 2 is at the uppermost position (double-dashed line 8B in Fig. 1).
At this point, all operating components in the sheet material transport device 4 and processing machine 2 are stopped.

Next, the upstream side intermittent feeding means 14 and the downstream side intermittent feeding means 16 provided in the above-mentioned continuous sheet material conveying device 4
The configuration of a preferred specific example will be described in detail.

Referring to FIGS. 10 and 11, the upstream intermittent feeding means 14 in the illustrated example includes an elongated stationary block 128 (constituting the main body of the stationary gripping means 260) and an elongated movable block 130 ( The movable gripping means 2
8). The stationary block 128 is disposed upstream of the processing table 10 of the processing machine 2 and is fixed to the stationary lower part 6 of the processing machine 2. Three cylinder portions 132 are formed on this stationary block 128 at predetermined intervals in a direction perpendicular to the conveying direction of the sheet material (in the vertical direction in FIG. 10, in the direction perpendicular to the plane of the paper in FIG. 11). (One of them is shown in FIG. 11), and each of the cylinder parts 132 has a movable gripping member 134 in the vertical direction (in the direction perpendicular to the plane of the paper in FIG. 10, and in the vertical direction in FIG. 11). direction)
It is attached so that it can be raised and lowered freely. The movable gripping member 134 is
a detail 138 supported by a pair of support members 136 (only one shown in FIG. 11); a piston part (not shown) fixed to one end (lower end) of the shaft part 138;
The shaft portion 138 has a dowel head 140 provided at the other end (upper end), and the lower gripping piece 34 is fixed to the head 140. A pneumatic chamber (not shown) defined by the cylinder portion 132 and the piston portion of the movable gripping member 134 is connected to the on-off valve 38 (see FIG. 1).

The stationary block 128 further includes the movable gripping member 13
A fixed gripping member 142 is fixed corresponding to 4, and the above-mentioned upper gripping piece 30 is fixed to this fixed gripping member 142. In the stationary gripping means 26 configured as described above, L
When the whale is in the non-operating state with the 1 on-off valve 38 (Figure #1) closed, the movable gripping member 134 is lowered by the elastic biasing action of a spring means (not shown), and the lower gripping piece 34 is in the inactive state. be placed in position. When in the non-operating state, the lower gripping piece 34 of the movable gripping member 134 and the upper gripping piece 30 of the fixed gripping member 142 are positioned apart from each other, and cannot grip the sheet material present between them. do not have. Therefore, as mentioned above, the stationary gripping means 2
6 does not work effectively on sheet materials. On the other hand, the on-off valve 38
(FIG. 1) is opened and put into action, air pressure from the pneumatic source 39 (FIG. 1) is supplied to the pneumatic chamber, and the action of this air pressure causes the movable gripping member 134 to move against the spring. Forced upwards against the elastic biasing action of the means, the lower gripping piece 34 is placed in the above-mentioned operating position. When raised to such an operative position, the lower gripping piece 34 cooperates with the upper gripping piece 30 of the fixed gripping member 142 to grip the sheet material therebetween.

Further, a movable block 130 forming a part of the movable gripping means 28 is movably disposed upstream of the stationary block 128. The movable block 130 also has three cylinder portions 144 formed at predetermined intervals in a direction perpendicular to the conveying direction of the sheet material (one of which is shown in FIG. 11). Part 1
A movable gripping member 146 is attached to each of the grippers 44 so as to be movable up and down in the vertical direction. The movable gripping member 146 is
The shaft portion 1 has substantially the same configuration as the movable gripping member 134 of the stationary gripping means 26 and is supported by a pair of support members 148.
502 piston portion (not shown) and a head 152;
The lower gripping piece 36 is fixed to the head 152. A pneumatic chamber (not shown) that is electrodynamically driven by the cylinder portion 144 and the piston portion of the movable gripping member 146 is connected to the on-off valve 38 (first ru+). This movable block 130 includes the movable gripping member 150.
A fixed gripping member 154 is fixed correspondingly to the fixed gripping member 154, and the above-mentioned upper gripping piece 32 is fixed to this fixed gripping member 154. In the movable gripping means 28 configured as described above,
When the on-off valve 38 (FIG. 1) is closed and in the non-operating position, the movable gripping member 150 is lowered by the elastic biasing action of a spring means (not shown), and the lower gripping piece 36 is in the non-operating position. It is located in In such a non-operating state, the lower gripping piece 3 of the movable gripping member 150
6 and the upper gripping piece 32 of the fixed gripping member 154 are located apart from each other and do not grip the sheet material present between them. Therefore, as mentioned above, the movable gripping means 28
does not work effectively on sheet materials. On the other hand, the on-off valve 38 (
1) is opened and put into operation, air pressure from an air source 39 (FIG. 1) is supplied to the pneumatic chamber, and the movable gripping member 34 is moved by the action of the air pressure to the spring. forced upwardly against the elastic biasing action of the means;
The lower gripping piece 36 is positioned at the above operating position.

When raised to such an operating position, the lower gripping piece 36
cooperates with the upper gripping piece 32 of the fixed gripping member 154 to grip the sheet material therebetween.

Each of the stationary gripping means 26 and movable gripping means 28 described above is further provided with forced lowering means 156 and 158. As will be discussed in more detail below, the forced lowering means 156 of the stationary gripping means 26 act on the movable gripping member 138 to
The lower gripping piece 34 is forcibly lowered to the inactive position against the action of the upper air pressure, and the forced lowering means 158 of the movable gripping means 28 acts on the movable gripping member 150 to resist the action of the air pressure. Then, the lower gripping piece 36 is forcibly lowered to the non-operating position.

Next, the downstream intermittent feeding means 16 will be explained.
The downstream intermittent feeding means 16 also includes an elongated stationary block 160.
(constituting the main body of the stationary gripping means 400) and an elongated movable block 162 (constituting the main body of the movable gripping means 42). The stationary block 160 is disposed downstream of the processing area 10 of the processing machine 2 and is fixed to the stationary lower part 6 of the processing machine 2. This stationary block 1
The configuration of the stationary gripping means 40, including 60, is substantially the same as the configuration of the stationary gripping means 26 of the upstream intermittent feeding means 14, and therefore a description thereof will be omitted.

Similarly to the stationary gripping means 26 of the upstream intermittent feeding means 14, in the stationary gripping means 40 having such a configuration, the spring means (Fig. The movable gripping member 164 is lowered by the elastic biasing action (not shown), and the lower gripping piece 46 fixed to the head 166 of the movable gripping member 164 is placed in the non-operating position.

Therefore, the lower gripping piece 46 of the movable gripping member 164 and the upper gripping piece 50 fixed to the fixed gripping member 168 are located apart from each other, and the stationary gripping means 40 cannot effectively act on the sheet material. . On the other hand, when the on-off valve 44 is opened and activated, air pressure from the air source 39 (FIG. 1) is applied to the cylinder portion 170 formed in the stationary block 160 and the piston portion 172 of the movable gripping member 164. The movable gripping member 164 is forced upward against the elastic biasing action of the spring means by the action of the air pressure, and the lower gripping piece 46 is placed in the working position. and cooperates with the upper gripping piece 50 to grip the sheet material therebetween.

Further, a movable block 162 that constitutes a part of the movable gripping means 42 is movably disposed downstream of the stationary block 160. The structure of the movable gripping means 42 including this movable block 162 is substantially the same as the structure of the movable gripping means 28 of the upstream intermittent feeding means 14, and therefore the description thereof will be omitted. Similarly to the movable gripping means 28 of the upstream intermittent feeding means 14, in the movable gripping means 40 having such a configuration, the spring means (Fig. The movable gripping member 176 is lowered by the elastic biasing action (not shown), and the lower gripping piece 48 fixed to the head 178 of the movable gripping member 176 is placed in the non-operating position. Therefore, the movable gripping member 1
The lower gripping piece 48 of 76 and the upper gripping piece 52 fixed to the fixed gripping member 180 are located apart from each other, and the movable gripping means 42 cannot effectively act on the sheet material. On the other hand, when the on-off valve 44 is opened and put into operation, air pressure from the air source 39 (FIG. 1) is applied to the cylinder portion 182 formed in the movable block 162 and the movable gripping member 1.
Pneumatic chamber 1 defined by piston portion 184 of 76
86 and by the action of this air pressure the movable gripping member 176 is forced upwardly against the elastic biasing action of the spring means, the lower fingers 48 being in the said working position and cooperating with the upper gripping piece 52. and grip the sheet material between them.

Each of the stationary gripping means 26 and the movable gripping means 28 of the downstream intermittent feeding means 16 111j described above is also provided with forced lowering means 188 and 190, respectively.

As mentioned in more detail therein, the stationary gripping means 400 forced lowering means 188 acts on the movable gripping member 164 to force the lower gripping piece 46 to lower to said inactive position against the action of said air pressure; Further, the forced lowering means 190 of the movable gripping means 42 acts on the movable gripping member 176 to forcibly lower the lower gripping piece 48 to the non-operating position against the action of the air pressure.

In the illustrated example, the movable gripping means 28 of the upstream intermittent feeding means 14 and the movable gripping means 42 of the downstream intermittent feeding means 16 are further connected. In the stationary lower part 6 of the processing machine 2, there are two through holes 192 (two through holes spaced apart in the direction perpendicular to the sheet material transport direction) penetrating in the sheet material transport direction. (Only one side shown)
are formed, and hollow connecting pipes 194 are movably disposed in each of the through holes 192. One end of each of the connecting pipes 194 is slidably supported by a support member 196 installed in a hole formed in the stationary block 12B of the stationary gripping means 26 of the upstream 1111 intermittent feeding means 14. The other end is the downstream intermittent feeding means 1
It is slidably supported by a support member 198 installed in a hole formed in the stationary block 160 of the stationary gripping means 40 of No. 6.

One end of each of the connecting pipes 194 is connected to the movable block 13 of the movable gripping means 28 of the upstream intermittent feeding means 14.
0 (more specifically, one end is fixed to one end of the movable block 130 and the other is fixed to the other end of the movable block 130), and each other end is connected to the downstream intermittent feeding means 16. The movable block 162 of the movable gripping means 42 of
(More specifically, one side is fixed to the movable block 16
2 and the other end is fixed to the other end of the movable block 162). Connecting rods 200 are further disposed within each of the connecting tubes 194, and the connecting tubes 194 slidably support the connecting rods 200 via a support member 202. One end of each connecting rod 200 connects to the upstream 111i movable cam block 20 disposed upstream of the movable gripping means 28 of the upstream 11+1 intermittent feeding means 14.
4 (described in detail in I) (specifically, one is fixed to one end of the upstream movable cam block 204, and the other is fixed to the other end of the movable cam block 204), each of which The other end is fixed to a downstream movable cam block 206 (described in detail later) disposed downstream of the movable gripping means 42 of the downstream intermittent feeding means 16 (in detail, one end is fixed to the downstream side movable cam block 206 (described in detail later). (The upper arm is fixed to one end of the movable force block 206, and the other is fixed to the other end of the upper U movable cam block 206.)

Therefore, the movable gripping means 28 of the upstream intermittent feeding means 14 and the movable gripping means 42 of the downstream intermittent feeding means 16 slide together with respect to the connecting rod 200, and the
(the position shown by the solid line in Fig. 1) and the forward movement position (the position shown by the two-dot chain line in Fig. 1, and the position shown in Figs. 10 and 11)
Next, referring to FIGS. 10 and 11, a reciprocating mechanism for reciprocating the movable gripping means 28 and 42 will be described. 2
10, an L-shaped arm 212, a first connecting arm 214, and a second connecting arm 216. A device installed on the upstream side of the upstream movable force mechanism 204: A shaft mechanism 220 extending in the force direction perpendicular to the conveying direction of the sheet member is rotatably attached to the crank 218 via a bearing member 7. A rotating member 210 is provided at one end of the shaft member 220 (in the specific example, the rotating member 210 is connected to the shaft member 22
0). A bevel gear 222 is fixed to the other end of this shaft member 220.
is a bevel gear 22 fixed to a shaft member 224 rotatably attached to the device housing 218 via a bearing member.
6 is engaged. One end of the shaft member 224 projects outward from the device housing 218, and a toothed pulley 228 is fixed to the projecting end. Toothed pulley 22
8 is drivingly connected via a toothed belt 230 to a toothed pulley 238 fixed to an input shaft 236 rotatably supported by a protruding support portion 232 and a cam housing 234. A toothed pulley 240 is further fixed to one end of this input shaft 236, and this toothed pulley 240 is connected to the movable upper part of the processing machine 2 via a toothed belt 242, control clutch means 126 (FIG. 3), etc. It is drivingly connected to a drive source (not shown) provided in an elevating mechanism for elevating and lowering the robot (FIG. 1). Therefore, when the control clutch means 126 is operated and the crank 12 rotates, the toothed belt 242, the input shaft 236° toothed pulley 238, the toothed belt 230, the toothed pulley 228, the shaft member 224, the bevel gears 226 and 222, and the The rotating member 210 is rotationally driven in the counterclockwise direction indicated by an arrow 244 in FIG. 11 via the shaft member 220. This rotating member 210 is rotated in synchronization with the crank 12 (second part), and the crank 12 moves from the angular position indicated by E in FIG. 2 to the angular position indicated by F in the direction indicated by the arrow. 11 in the direction shown by arrow 244 to the angular position shown in FIG. 11. While the crank 12 rotates from the angular position shown by F in FIG. 2 to the angular position shown by E in the direction shown by the arrow, it rotates from the angular position shown in FIG. An angular position opposite to that shown in Fig. 11 (first
1).

A connection adjustment screw member 246 is attached to the rotating part 210 which is rotated in the direction shown by the arrow 244 as described above.
The male threaded portion of this connection adjustment screw member 246 has a rotary member 2
A crankshaft body 248 is screwed through a slot 247 formed in the end face of the crankshaft 10 . This crankshaft body 24
A crank body 252 is mounted on the crank body 252 by screwing a fixed nut 1-250 onto the crank body 8, and the large end of the above-mentioned cross-shaped arm 212 is rotatably connected to the crank body 252 via a pair of bearing members 254. has been done. Therefore, when the connection adjustment screw member 246 is rotated, the crankshaft body 248, and therefore the crank body 252, moves in the left and right direction in FIGS. (as will be understood to vary). The small end (the end opposite to the large end) of the L-shaped arm 212 is connected to the first
One end of the connecting arm 214 is rotatably connected (in the specific example, it is connected to both sides of the L-shaped arm 212).
, rollers 258 are rotatably attached to both ends of the connecting pin 256. Each of these rollers 258 is
The sheet material is guided by an upper guide surface 262a and a lower guide surface 262b defined by a guide member 260 (only one of which is shown in FIG. 11) provided on the device housing 21B, and thus along the conveyance direction of the sheet material ( Therefore, it reciprocates (in the left-right direction in FIGS. 10 and 11). The other end of this first connecting arm 214 is connected via a connecting pin 268.
It is rotatably connected between fixed connecting condos 264 arranged at intervals. The fixed connecting rod 264
Each of the above has a nut member 266 attached to a male threaded portion formed at a tip portion protruding through a through hole formed in the movable block 130 of the upstream intermittent feeding means 14, respectively.
It is fixed by screwing it on. Therefore, the crank body 252 attached to the rotating part 210 and the 1" moving block 130 of the movable gripping means 28 of the upstream intermittent feeding means 14 are connected to the L-shaped fall arm 212 and the first connecting arm 2.
14, and the rotating part old 210 is connected to the 11th
During rotation from the angular position opposite to the angular position shown in FIG. 1 (angular position rotated by 180 degrees from the angular position shown in FIG. 11) to the angular position groove shown in FIG. The movable block 130 of the movable gripping means 28 and the downstream intermittent feeding means connected to the movable block 130 via a connecting pipe 194] The movable block 162 of the movable gripping means 42 of 6 is connected to the movable block 162 of the movable gripping means 42 of from the retracted position (the position shown by the solid line in FIG. 1) to the forward position (the position shown by the two-dot chain line in FIG. 1 and also shown in FIGS. 3 and 4). Also, rotating part 2
10 is the angle shown in FIG. 11 from the angular position shown in FIG.
・While rotating to the angle position # opposite to the degree position, the upper #r
, the movable block 130 of the movable gripping means 28 of the side intermittent feeding means 14 and the movable gripping means 4 of the downstream side intermittent feeding means 16
The movable block 162 of No. 2 is moved in the direction opposite to the conveying direction of the sheet material from the forward position (# is indicated by a chain double-dashed line in the figure and the position shown in FIGS. 10 and 11) to the retracted position ( 1) to the position indicated by the solid line in FIG.

Furthermore, one end of the second connecting arm 216 is rotatably connected to the protrusion formed at the small end of the L-shaped arm 212 via a connecting pin 270 (in the specific example, the L-shaped arm 212 212 ), the other end of the second connection arm 216 is pivotally connected to the connection block 274 via a connection pin 276 . A connecting block 274 is fixed to the upstream movable cam block 204, and as clearly shown in FIG. The upstream movable cam block 204 is provided with cam portions 278 corresponding to each of the movable grip members 150 mounted on the movable block 130 so as to be movable up and down.

This cam portion 278 has a cam action surface &-Afl defined on the upper surface of the protruding portion, and the cam action surface has a horizontal action portion which is substantially horizontal and a sheet material from one end of the horizontal action portion, as is clear from FIG. and a tilting section that is tilted downward in the conveyance direction. On the other hand, the movable block 130 of the movable gripping means 28 of the upstream intermittent feeding means 14 has a swinging portion 12s o corresponding to each of the cam portions 278 and constituting a part of the forced lowering means 156. 282 so that it can swing freely. An engaging pawl 283 is formed at one end of the swinging member 280, and driven rollers 2 and 8 are formed at the other end.
4 is rotatably attached. This driven roller 284 is brought into contact with the cam action surface of the cam portion 278 by a spring means (not shown). The forced lowering means 156
In this case, when the driven roller 284 is located at the upper end of the inclined action part of the cam part 278 (the part shown in FIG. 11 located below the horizontal action part), as shown in FIG. The lower gripping piece 36 of the movable gripping means 28 is positioned at the operating position by the action of the air pressure described above, and the engaging claw 283 of the swinging member 280 is connected to the engaging portion provided on the movable gripping member 146 of the movable gripping means 28. 286. Based on this positional relationship, when the upstream movable cam block 204 is moved forward relative to the movable block 130, the driven roller 284 is positioned at the horizontal action portion of the cam portion 278, and the swinging member 280 is moved forward. In FIG. 11, the engaging pawl 283 acts on the engaging portion 286 of the movable gripping member 146 as it is swung clockwise, and the lower gripping piece 36 resists the action of the air pressure described above and deactivates. On the other hand, when the upstream movable cam block 204 is moved backward relative to the movable block 130 from this positional relationship, the driven roller 284 is positioned at the lower part of the tilting part of the cam part 278, Swing member 2
80 is swung counterclockwise in FIG. 11 by the action of a spring means (not shown), and the engaging pawl 283 is swung counterclockwise in FIG.
The contact state between the engaging portion 286 and the engaging portion 286 is released, and the lower gripping piece 36 continues to be held at the operating position by the action of the air pressure described above.

Further, the downstream movable cam block 206 connected to the above-mentioned upstream movable cam block 204 via the connecting rod 200 is also connected to the movable block 162 of the movable gripping means 42 of the downstream intermittent feeding means 16 so as to be able to rise and fall freely. A cam portion 288 is provided corresponding to each of the attached movable grip members 176. This cam portion 288 is substantially the same as the cam portion 278 provided on the upstream movable cam block 204, and as is clear from FIG. It has a camming surface that includes a beveled portion that is sloped downwardly in the direction of conveyance of the sheet material. On the other hand, the movable block 162 of the movable gripping means 42 of the downstream intermittent feeding means 16 has the cam portion 28
A swinging part 290, which constitutes a part of the forcible lowering means 190, is swingably mounted in correspondence with each of the above-described forcible lowering means 190. The configuration of the forced lowering means 190 is as follows:
The forcible lowering means 15 provided on the movable gripping means 28 of
The configuration is substantially the same as that of No. 6, and therefore the explanation will be omitted. Also in this forced lowering means 190, the driven roller 29
2 is located at the upper end of the inclined action part of the cam part 288 (the part shown in FIG. 11 located slightly below the horizontal action part), as shown in FIG. The lower gripping piece 48 is positioned at the operating position by the action of the air pressure described above, and the engaging claw 294 of the swinging member 290 engages the movable gripping member 176 of the movable gripping means 42.
It comes into contact with an engaging part 296 provided in the.

From this positional relationship, the downstream movable cam block 20
6 is moved forward relative to the movable cam block 162, the driven roller 292 is positioned at the horizontal action part of the cam part 288, and the engagement pawl 294 of the swinging member 290 is moved to the engagement part of the movable gripping member 176. 296, the lower gripping piece 48 is positioned in the non-acting position against the action of the air pressure, and on the other hand, due to this positional relationship, the downstream movable cam block 206 is moved relative to the movable block 162. When the driven roller 292 is moved backward, the driven roller 292 is positioned below the tilting part of the cam part 288, and the state of contact between the engaging claw 294 of the swinging member 290 and the engaging part 296 of the movable gripping member 176 is released. Thus, the lower gripping piece 48 continues to be held in the operating position by the action of the air pressure.

The lifting and lowering of the moving gripping members 146 and 176 by the forcible lowering means 156 and 190 described above is performed by the rotating member 210.
rotation in the direction indicated by arrow 244.

To explain further, the movable gripping means 28 of the upstream concave intermittent feeding device 14 and the movable gripping means 42 of the downstream intermittent feeding device 16, which are connected to each other via the connecting pipe 194, are connected to each other in relation to the rotation of the rotating member 2100. The upstream side movable cam block 204 and the downstream side movable cam block 204 are reciprocated along the transporting direction of the sheet part through the connecting arm 214 shown in FIG. The cam block 206 is reciprocated along the conveyance direction of the sheet material via the second connecting arm 216 that reciprocates in relation to the rotation of the rotating member 2100.

Here, the first connecting arm 214 and the second connecting arm 21
6, the first connecting arm 214
One end of the first connecting arm 214 is configured to be guided by the guide member 260 so as to be reciprocated along the conveying direction of the sheet material, and one end of the first connecting arm 214 is connected to the L-shaped arm 21.
One end of the second connecting arm 216 is pivotally connected to the small end of the L-shaped arm 212 (in other words, the rotating member 21
0 and the L-shaped arm 212 (crankshaft body 248
central axis k), the connection between the small end of the L-shaped arm 212 and one end of the first connection arm 214 (center axis of the connection bin 256), and the protrusion of the L-shaped arm 212 and the second connection. The positional relationship of the connecting portion at one end of the arm 216 (the central axis of the connecting bottle 270) is shown in FIG. 11, as well as in FIGS. 12 and 13.
11) Therefore, while the rotating member 210 rotates from the angular position opposite to the angular position shown in FIG. 11 to the angular position shown in FIG. The second connecting arm 216 is also located relatively rearward (to the left in FIG. 11) of the first connecting arm 214 based on the positional relationship shown in FIG. , while rotating from the angular position shown in FIG. 11 to the angular displacement # opposite to the angular position shown in FIG. It is located relatively forward (to the right in FIG. 11) of the connecting arm 214. Regarding this point, the first
To explain with reference to FIGS. 2 and 13, the rotating member 21
0 is rotated by an angle θ degrees from the angular position shown by the solid line in Fig. 12 (i.e., the angular position shown in Fig. 11) (when the L-shaped arm 212 is rotated to this angular position, the L-shaped arm 212 is moved to the angular position indicated by the two-dot chain line). The amount of movement Yl of the movable gripping means 28 of the upstream intermittent feeding device 14 when the movable gripping means 28 of the upstream side intermittent feeding device 14 is moved to the position shown in FIG.
(movement based on the position of the movable gripping means 28 at the angular position shown by the solid line in FIG. @ll The amount of movement based on the position of the excitation cam block 04), the amount of movement Y1 of the movable gripping means 28 is: The amount of movement iYz of the upstream side movable cam block 204 is y2
=y, -s s = t2・addition α+ψ)+5 even f; (!+91)
E]'r: Connection part between rotating member 210 and L-shaped arm 212 (crankshaft 2
48 central axis): distance tl between the connecting portion of the rotating member 210 and the L-shaped arm 212 (
the central axis of the crankshaft body 248), and the L-shaped arm 21
2 and the first connecting arm 214 (connecting bin 256
Distance t2 between the connecting part of the L-shaped arm 212 and the first connecting arm 214 (the central axis of the connecting pin 256) and the connecting part of the L-shaped arm 212 and the second connecting arm 216 section (connecting pin 2
Distance t5 between the connecting portion of the L-shaped arm 212 and the second connecting arm 216 (the central axis of the connecting pin 256) and the connecting portion of the second connecting arm 216 and the connecting block 274 (Connected bottle 2
Distance E between the connecting portion of the first connecting arm 214 and the fixed connecting rod 264 (the central axis of the connecting pin 268) and the connecting portion of the second connecting arm 216 and the connecting block 274 ( Connecting pin 2
76 central axis): Difference θ between the moving amount Y1 of the movable gripping means 28 and the moving amount Y2 of the upstream movable cam block 204; Relative to the angular position shown by the solid line in FIG. Rotated rotating member 2100
The angle of rotation (therefore the substantially horizontal axis and the rotating member 21
(Angle between the rotation center of 0 and the axis connecting the rotating member 210 and the connecting part of the L-shaped 7-m 212 (the central axis of the crankshaft body 248)) α: Substance in the state shown by the solid line in FIG. The vertical axis above, the connecting portion between the L-shaped arm 212 and the first O-connection 7-4214 (the central axis of the connecting pin 256), and the L-shaped arm 2
12 and the second connecting arm 216 (connecting pin 27
Angle ψ between the axis connecting the axis (center axis of 0) and 6: the substantially horizontal axis when the rotating member 210 rotates θi and the connecting portion of the rotating member 210 and the L-shaped arm 212 (the crankshaft 248 central axis) and L-shaped arm 21
2 and the first connection arm 214 (connection pin 256
It is the angle between the axis connecting the central axis of

Therefore, the movement amount difference S between the movement amount Y1 of the movable gripping means 28 and the movement amount Y2 of the upstream side movable cam block 204 is different from the angular position of the rotating member 210 shown in FIG. 11 and shown by the solid line in FIG. While rotating from the opposite angular position in the direction of arrow 244 to the angular position shown in FIG. 11 and shown by the solid line in FIG.
The connecting arm 216 is connected to the first connecting arm 2 based on the positional relationship shown in FIG. 11 and shown by the solid line in FIG.
14 is also located relatively rearward), and the rotating member 210
is shown in FIG. 11 and in the direction of arrow 244 from the angular position shown by the solid line in FIG.
It is a positive value while rotating to the angular position opposite to the angular position shown in solid line in FIG. 2 (in other words, the second connecting arm 216 is shown in FIG. Based on the positional relationship, the first connecting arm 214 is also located relatively forward).

Thus, while the rotating member 210 rotates from the angular position opposite to that shown in FIG. 11 to the angular position shown in FIG. The movable gripping means 42 of the downstream intermittent feeding means 16 moves from the ridge retracted position (indicated by a solid line in FIG. 1) to the forward position (indicated by a two-dot chain line in FIG. 1, and also shown in FIGS. 10 and 11). During this period, the second connecting arm 216 is moved by the first connecting arm 2.
14, the driven rollers 284 and 294 are positioned below the tilting portions of the cam portions 278 and 288, and as described above, the driven rollers 284 and 294
0 and 290 and the engaging portions 286 and 296 of the movable gripping members 146 and 176 are released, and the lower gripping pieces 36 and 48 of the movable gripping means 28 and 42 are pressed against the air pressure. It is held in the working position by the action of. Further, while the single rotation member 210 rotates from the angular position shown in FIG. 11 to the angular position opposite to the angular position shown in FIG.
and 42 are moved from the forward position (indicated by the two-dot chain line in Fig. 1 and the position shown in Figs. 1θ and 11) to the delivery position (indicated by the solid line in Fig. 1), and during this time The second connecting arm 216 is connected to the first connecting arm 21
4 is also located relatively forward, so the driven rollers 284 and 294 are positioned at the horizontal action portions of the cam portions 278 and 288, and as described above, the driven rollers 284 and 294 are positioned at the horizontal acting portions of the cam portions 278 and 288,
The engaging claws 283 and 294 of 90 act on the engaging portions 286 and 296 of the movable gripping members 146 and 176, and the lower gripping pieces 36 and 48 of the movable gripping means 28 and 42 are moved against the action of the air pressure. held in a non-active position.

Next, with reference to FIGS. 10, 11, and 14, the lower gripping piece 34 of the stationary gripping means 26 of the upstream intermittent feeding means 14 and the stationary gripping means 40 of the downstream intermittent feeding means 16. A mechanism for moving the lower gripping piece 46 up and down will be explained. The above-mentioned protruding support portion 232 and cam housing 23
A first cam plate 298 is fixed to the other end of the input shaft 236 rotatably supported by the input shaft 236.
A second cam plate 300 is fixed to the boss portion 8.

The first cam plate 298 and the second cam plate 300 are housed within the cam housing 234. A guide member 302 is mounted within the cam housing 234, and a coroblock 304 is slidably disposed within the guide member 302.

At one end of the roller block 304, a first driven roller 308 contacts the cam action surface of the first cam plate 298 via a pin 306, and a second driven roller 308 contacts the cam action surface of the second cam plate 300. A driven roller 310 is rotatably attached to each of the rollers, and a working pin 312 is installed at the other end.

The roller block 304 is elastically biased between the guide member 302 and the roller block 304, and the first and second driven rollers 308 and 310 are connected to the first and second driven rollers 308 and 310, respectively.
spring means 3 for pressing against the cam plates 298 and 300 of the
Further, support brackets 316 are fixed to the processing machine 2 at intervals in the conveying direction of the sheet material, and a transmission rod 320 is connected to the support brackets 316 via a support member 318. It is rotatably supported.

A fan-shaped notch 322 is formed in the middle portion of the transmission rod 320, and the working pin 312 is disposed such that its tip abuts against a locking surface defining the notch 322. Here, the functions of the first cam plate 298 and the second cam plate 300 described above will be explained. The first and second cam plates 298 and 300 are connected to the crank x2 (Figure J2).
It is configured to rotate in synchronization with the The cam action surface of the first cam plate 298 has a large diameter action surface and a small diameter action surface, and the crank 12 moves from the angular position indicated by the symbol E in FIG. 2 to the angular position indicated by the symbol F in the direction indicated by the arrow. During the rotation, the large-diameter acting portion acts on the first driven roller 308, and the crank 12 rotates from the angular position indicated by the symbol F in FIG. 2 to the angular position indicated by the symbol E in the direction indicated by the arrow. The small-diameter acting portion is configured to act on the first driven roller 308. In addition, the second cam plate 30
The cam action surface of 0 also has a large-diameter action part and a small-diameter action part, and while the crank 12 rotates from the angular position indicated by the symbol C in FIG. 2 to the angular position indicated by the symbol The large diameter acting portion acts on the driven roller 310 of calculation 2, and the small diameter action occurs while the crank 12 rotates from the angular position indicated by the symbol C in the direction indicated by the arrow to the angular position indicated by the symbol C in Fig. 2. The second driven roller 310 is configured to act on the second driven roller 310. Therefore, the crank 12 is moved from the angular position indicated by the symbol E to the angular position # indicated by the symbol F in the diagram of the second frame.
During the rotation, the large-diameter acting portion of the first cam plate 298 causes the Coroblock 304 to move downward in FIG.
4, the crank 12 is moved to the left.
While rotating from the angular position shown by C in FIG. 2 to the angular position 1 shown by C in FIG. During this time, the transmission iron 32.0 is rotated by a predetermined angle in the direction shown by the arrow 324 in FIG.
and the angular position shown in FIG. 14) to a second angular position.

On the other hand, while the crank 12 rotates from the angular position indicated by the symbol F to the angular position indicated by the symbol C in FIG. Since the small diameter acting portion of the first cam plate 298 acts on the first driven roller 308 and the small diameter acting portion of the second cam plate 300 acts on the second driven roller 310, the transmission rod 320 is as shown in FIG. and is held in the first angular position shown in FIG. Note that the first cam plate 2
98 and the second cam plate 300 may be configured in more than one cam plate.

The rotational force of the transmission rod 320, which rotates between the first angular position and the second angular position as described above, is applied to the forced lowering rod 326, which constitutes a part of the forced lowering means 154, and the forced lowering rod 326, which is a part of the forced lowering means 154. It is configured to be transmitted to a forced lowering rod 328 forming part of the means 190. To explain further, the transmission rod 320 has fan-shaped notches 3 at both ends.
30 (only one end of the transmission rod 320 is shown in FIG. 14). On the other hand, processing area 10
(support brackets) 332 (fixed to the processing machine 2 at intervals in the direction perpendicular to the conveyance direction of the sheet material on the upstream side of the sheet material)
In the specific example, there are three forced lowering means 15
The forced lowering iron 326 forming part of the support member 3
Support brackets 334 (in the specific example, three support brackets 334 are rotatably supported through the processing machine 2 and fixed to the processing machine 2 at intervals in the direction perpendicular to the conveyance direction of the sheet material on the downstream side of the processing area 10 ) is provided with forced lowering means 190
The forced descending iron 328 forming a part of the support member 33
It is rotatably supported via 5. One end of the forced lowering rod 326 is located above one end of the transmission iron 320, and a notch (not shown) is formed in the one end.

Further, one end of the forced lowering rod 328 is also located above one end of the transmission rod 320, as shown in FIG. 14, and a notch 337 is formed in this one end as well. Further, vertical transmission rods 336 are interposed between each of the notches 330 at both ends of the transmission iron 320 and the notches 337 of the forced lowering rods 326 and 328, respectively. Each of the transmission vertical rods 336 is slidably attached to a support bracket 338 fixed to the processing machine 2 via a support member, and
One end of the transmission vertical rod 336 is the transmission rod 320
abuts against a retaining surface defining a notch 330 at one end of the
The pin implanted at the other end is in contact with an engaging portion defining a notch in the forced lowering rod 326. Further, one end of the other transmission vertical rod 336 is in contact with an engagement surface that defines the notch 330 at the other end of the transmission rod 320, and the pin 340 implanted at the other end is connected to the notch of the forced lowering rod 328. 337 is in contact with an electrodynamic engaging surface. The forcible lowering rod 326 further includes a movable gripping member 134 that is attached to the stationary block 128 so as to be able to rise and fall freely.
A notch 342 is formed corresponding to the notch 34.
Each of the engaging surfaces defining the number 2 engages with a retaining portion 344 formed on each movable gripping member 134, respectively. Also, the stationary block 1 is also attached to the forced lowering rod 328.
A notch 346 is formed corresponding to the movable gripping member 164 which is attached to the movable gripping member 164 so as to be freely raised and lowered.
Each of the retaining surfaces defining a respective one engages a retaining portion 348 formed on each movable gripping member 164 . Therefore, when the transmission rod 320 is in the first angular position shown in FIG. M2O and FIG. is forced upward by the action of the air pressure, and the lower gripping pieces 34 and 46
is located at the working position. On the other hand, the transmission rod 3
20 is positioned in the second angular position as described above, the transmission vertical iron 336 is moved vertically upwardly and the forced lowering iron 326 is rotated counter-chronologically in FIG. 11 into its engagement. The surface acts on the movable gripping member 134 to cause it to descend, and the forced lowering iron 328 is rotated clockwise in FIG.
4 and 46 are positioned in the non-acting position against the action of the air pressure.

Next, the effects of the upstream intermittent feeding means 14 and the downstream intermittent feeding means 16 having the above-described configurations will be briefly explained in relation to the rotation of the crank 12 (FIG. 2).

As described above, while the crank 12 rotates from the angular position indicated by the symbol E in the overhead view 2 through the top dead center A to the angular position indicated by the symbol F, the rotating member 210 is moved to the angular position shown in FIG. 11 in the direction of arrow 244 to the angular position shown in FIG. The movable gripping means 42 of the means 16 moves from the retracted position (the position shown in solid lines in FIG. 1) to the forward position (the first position).
10 and 11). Also, during this period, since the second connecting arm 216 is positioned relatively rearward than the first connecting arm 214, the swinging members 280 and 290 move around the movable gripping members 146 and 176, as described above.
movable gripping means 28 away from engaging portions 286 and 296 of
The lower gripping pieces 36 and 48 of 42 are held in the operating position by the action of the air pressure, and furthermore, since the large-diameter operating portion of the first cam plate 298 acts on the first driven roller 308, as described above, , the transmission rod 320 is held in the second angular position and the forced lowering rods 326 and 328 act on the movable gripping members 134 and 164 of the stationary gripping means 26 and 40 to lower them, and the lower gripping pieces of the stationary gripping means 26 and 40 are lowered. 34 and 46 are held in the non-operative position. Therefore, during this period, the upper gripping pieces 32 and 50 of the movable gripping means 28 and the lower gripping pieces 36 and 46 cooperate with each other to grip the sheet material, and thus the movable gripping means 28 and 42 cooperate with each other to grip the sheet material. As the means 28 and 42 advance, the sheet material is transported forward. In addition, in the case described above, the on-off valve 38
and 44 (FIG. 1) are opened and air pressure is supplied to the movable gripping means 28 and 42, and the on-off valve 38
When (or 44) is closed, the movable gripping member 146 (or 164) is moved by the action of spring means (not shown).
) is held in the non-operating position, the movable gripping means 2
8 (nu is 42), the sheet material is not conveyed forward.

Subsequently, while the crank 12 rotates from the angular position indicated by the symbol F in FIG. 2 through the bottom dead center B to the angular position indicated by the symbol F, as described above, the rotating member 210
11 in the direction shown by arrow 244 from the angular position shown in FIG.
The movable gripping means 28 of the upstream intermittent feeding means 14 and the movable gripping means 42 of the downstream intermittent feeding means 16 are rotated to an angular position opposite to the angular position shown in the figure, and in connection with this rotation, the movable gripping means 28 of the upstream intermittent feeding means 14 and the movable gripping means 42 of the downstream intermittent feeding means 16 are The rivet is moved from the forward position (the position shown by the two-dot chain line in Fig. 1 and the position shown in Figs. 10 and 11) to the above-mentioned delivery position (the position shown by the solid line in Fig. 1). Also, during this period, the second continuous arm 216 is connected to the first connecting arm 214.
Since the gripping member 146 is also positioned relatively forward, the swinging members 280 and 290 move toward the movable gripping member 146 as described above.
The lower gripping pieces 36 and 48 of the movable gripping means 28 and 42 are held in the non-operating position. Furthermore, during this period, while the crank 12 rotates from the angular position indicated by the symbol F to the angular position indicated by the symbol C, and while the crank 12 rotates from the angular position indicated by the symbol to the angular position indicated by the symbol E, the first and second Since the small diameter acting portions of the cam plates 298 and 300 act on the bacteria 1 and the second driven rollers 308 and 310, the transmission rod 320 is held in the first angular position as described above, and the stationary gripping means 26 and 4o lower grip pieces 34 and 4
6 is held in the working position by the action of the air pressure. Furthermore, during this period, while the crank 12 rotates from the angular position indicated by the symbol C in FIG. 2 through the bottom dead center B to the angular position indicated by the symbol (therefore, the processing machine 20 works), the second The large-diameter acting portion of the cam plate 3000 acts on the second driven gear 0.310, and the transmission rod 320
As described above, the lower gripping pieces 34 and 46 of the stationary gripping means 26 and 40 are positioned in the non-operating position, but as described above, the movable upper part 8 (first
The forming tool (■ not shown) installed in the stationary lower f
A forming tool (not shown) provided at f[i6 (FIG. 1) acts on the sheet material present in the processing area 1o to apply press forming. Therefore, during this time, the upper gripping pieces 30 and 50 and the lower gripping pieces 34 and 46 of the stationary gripping means 26 and 4o cooperate to grip the sheet material, or the forming tool of the movable upper part 8 and the forming tool of the movable lower part 6 The tool acts on the sheet material so that the sheet material is held stationary without being moved backwards in conjunction with the backward movement of the movable gripping means 28 and 42. In addition, in the above case, the on-off valves 38 and 4
4 (Fig. 1) is opened and the stationary gripping means 26 and 4o
If the on-off valve 38 (or 44) is closed, the spring means (not shown)
Since the movable gripping member 134 (or 164) is held in the non-operating position by the action of
No sheet material is gripped between 4 (or 46).

The above-mentioned elaborate operation is performed every 1201 rotations of the crank, and by repeating this operation, the sheet material is intermittently fed.

In the specific example described above, the lower gripping pieces of the stationary gripping means 26 and 40 are moved during the working period of the processing machine 2 (therefore, while the crank 12 rotates from the angular position indicated by the symbol C to the angular position indicated by the symbol C). 34 and 46 are held in the non-operating position, because the positioning holes formed in the sheet material (formed during the above-mentioned molding process) are shelled in the movable upper part 8. The purpose of this positioning is to insert a pin (-not shown) to ensure that the sheet material is positioned at the required position during press molding.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a specific example of a sheet material conveying apparatus constructed according to the present invention. FIG. 2 is an explanatory view schematically showing the rotational movement of the crank of the shelled processing machine in relation to the sheet material conveying device of FIG. 1; FIG. 3 is a simplified diagram showing the control system of the sheet material conveying device shown in FIG. Figure 4 is a time chart showing the operating procedure of the old sheet material conveying device in Figure 1. 5 to 9 are explanatory diagrams for explaining the operating state of the sheet charge conveying device of Figure 1, respectively. FIG. 10 is a partially cutaway plan view showing the upstream intermittent feeding means and downstream intermittent feeding device of the sheet material conveying device of FIG. 1 and their related parts. FIG. 11 is a partially cutaway sectional view showing the upstream intermittent feeding device and downstream intermittent feeding device of FIG. 10 and their related parts. Figures 12 and 13 respectively show the movable gripping means and the top II.
rL (Explanatory diagram for explaining the relationship between drive force and human drive cam block. Fig. 14 is a sectional view taken along the line X-X in Fig. v10. 2... Processing machine 4... Sheet material conveyance Apparatus IO...Processing area 14...Upstream intermittent feeding means 16...Downstream intermittent feeding means 18...Carrying in means 20...Carrying out means 110...Controller Patent applicant Made by Toyo Kan Co., Ltd. Noizumi Kikai Seisakusho Co., Ltd. Figure 2 A Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] 1. To transport the sheet material through the processing area of a processing machine in which a period of action in which the sheet material is subjected to processing and a period of non-action in which the sheet material is not acted upon are repeated. The sheet material conveying device is selectively brought into an inoperative state and an operative state, and in the inactive state does not effectively act on the sheet material, and in the operative state does not work effectively on the sheet material, and in the operating state, the processing machine is not operated. an upstream intermittent feeding means disposed upstream of the processing area and capable of advancing the sheet material by a predetermined amount at a time; A machine disposed on the downstream side of the processing area that does not effectively act on the sheet material in the operating state, and that can advance the sheet material by a predetermined amount each time the processing machine is inactive in the operating state. a downstream intermittent feed means selectively activated and inactivated, the inactivated state being ineffective against the sheet material, and the activated state incapable of continuously advancing the sheet material; a conveying means disposed upstream of the upstream intermittent feeding means, which can be selectively brought into an inactive state and an activated state, in which the sheet material is not effectively acted upon in the inactive state; a discharging means disposed downstream of the downstream intermittent feeding means, capable of continuously advancing the sheet material in the state; the upstream intermittent feeding means; the downstream intermittent feeding means; a control means for controlling the carrying-in means and the carrying-out means, the control means (a) causing the carrying-in means to be activated when the upstream intermittent feeding means is in the inoperative state; (b) when the front portion of the sheet material being advanced by the carrying-in means in the operative state is carried into the upstream intermittent feeding means, the carrying-in means is brought into the inoperative state; (c) When the leading edge of the sheet material being intermittently advanced by the upstream intermittent feeding means in the activated state is fed into the downstream intermittent feeding means, the upstream side (a) causing the intermittent feeding means to be in the inactive state and causing the downstream intermittent feeding means to be in the activated state; When the trailing edge part leaves the upstream intermittent feeding means, the upstream intermittent feeding means is brought into the activated state 7
(e) When the trailing edge of the sheet material being intermittently advanced by the activated downstream intermittent feeding means leaves the processing area, the downstream intermittent feeding means is deactivated. and causing the carrying out means to be in the operating state;
(f) A sheet material conveying device characterized in that when the trailing edge of the sheet material being advanced by the carrying-out means in the activated state leaves the carrying-out means, the conveying means is brought into the inoperative state. . 2. A guide member having an upper surface inclined upward toward the downstream side is disposed between the carrying-in means and the upstream intermittent feeding means, and the sheet is advanced by the carrying-in means. 2. A sheet material conveying device according to claim 1, wherein the material is raised by the guide member so that the front part thereof is stacked on the rear part of the sheet material located upstream therefrom. 3. The control means includes a signal generation means that generates a signal every time the processing machine is inactive or active, and a counting means that counts the signals generated by the signal generation means, and the counting means counts the signals generated by the signal generation means. depending on the numerical value, causing the upstream intermittent feeding means to be in the operative state, causing the upstream intermittent feeding means to be in the inactive state, and causing the downstream intermittent feeding means to be in the operative state; The sheet material conveying device according to claim 1 or 2, characterized in that the conveying means is brought into the operating state. 4. The control means includes an incoming sheet material detecting means disposed at a predetermined position upstream of the incoming sheet material, and when the incoming sheet material detecting means detects the trailing edge of the sheet material, the controlling means controls the incoming sheet material to detect the trailing edge of the sheet material. Claim 1, which causes the non-operating state.
The sheet material conveying device according to any one of Items 1 to 3. 5. The carrying-in means is also selectively brought into a reverse operating state for reversing the sheet material, and a predetermined position upstream of the carrying-in means has an upper surface inclined upwardly toward the downstream side and an upper surface for reversing the sheet material. A reversing blocking member is provided having a front surface capable of blocking the loading means, the control means controlling the loading means for a period of time prior to causing the loading means from the activated condition to the inactivated condition. the reversely actuated state, and thus causes the sheet material which has been advanced by the carrying means in the actuated state so that its trailing edge is also downstream of the front surface of the backward movement blocking member to cause its trailing edge to be abutting the front surface of the backward movement prevention member, and then causing the carrying-in member to be in the non-moving state;
In the sheet member conveyance device #06 according to any one of claims 1 to 4, the control means controls the conveying means after a certain amount of time has elapsed from the time when the carrying means is brought into the reverse operation state. 6. A sheet material conveying device according to claim 5, wherein the conveying means is brought into said inoperative state. 7. The control means includes a discharge sheet material detection means disposed at a predetermined position downstream of the discharge means, and when the discharge sheet material detection means detects the leading edge of the sheet material, the downstream intermittent feeding means 7. A sheet material conveying device according to any one of claims 1 to 6, wherein the conveying means is brought into the inoperative state and the carrying-out means is brought into the operating state. 8. The control means according to any one of claims 1 to 7, wherein the control means causes the discharging means to enter the inoperative state after a predetermined period of time has elapsed from the time when the discharging means is brought into the operating state. sheet material conveying equipment. 9. Further comprising a feed means selectively brought into an activated state and a non-activated state, in the activated state being capable of advancing a sheet of sheet material from the sheet material storage to the conveying means; The control means causes the supply means to enter the operation state at the same time as or immediately after placing the upstream intermittent feeding means into the operation state, and controls the sheet being advanced by the sheet material supply means in the operation state. Claims 1 to 1, wherein when a leading edge of material is fed into the conveying means, the feeding means is placed in the inactive state.
The sheet material conveying device according to any one of items 0 to 0. , 10. The control means includes a supply sheet material detection means disposed downstream of the input means, and causes the supply means to be in the inoperative state when the supply sheet material detection means detects a leading edge of the sheet material. A sheet material conveying device according to claim 9. 11. selectively brought into an inactive state and an activated state;
In the non-actuated state, no action is applied to the sheet material, and in the actuated state, the leading edge portion acts on the sheet material carried into the upstream intermittent feeding means by the carrying means to prevent its movement. Restraint means that can be used are installed,
Any one of claims 1 to 10, wherein the control means causes the restraining means to be in the activated state when both the carrying-in means and the upstream intermittent feeding means are in the inactive state. A sheet material conveying device according to the invention. 12. The conveying means comprises a pair of rollers, at least one of which is a driven roller, at least one of the pair of rollers having a working position in which it cooperates with the other to nip the sheet material between them and the other. 12. A sheet material conveying apparatus as claimed in any one of claims 1 to 11, wherein the sheet material transport apparatus is selectively positioned in an inactive position spaced from the sheet material conveying apparatus. 13. The conveying means comprises a pair of rollers, at least one of which is a driven roller, and at least one of the pair of rollers is in an operative position for cooperating with the other to nip the sheet material between them and from the other. 13. A sheet material transport device as claimed in any one of claims 1 to 12, wherein the sheet material transport device is selectively positioned in spaced apart non-active positions. 14. The upstream intermittent feeding means includes a stationary gripping means and a movable gripping means that is moved in the front-rear direction over a predetermined range, and each of the stationary gripping means and the movable gripping means has a pair of gripping pieces. and wherein at least one of each pair of gripping pieces is selectively positioned in an operative position in cooperation with the other to grip a sheet material therebetween and in an inoperative position away from the other. The sheet material conveying device according to any one of Items 1 to 13. 15. The downstream intermittent feeding means includes a stationary gripping means and a movable gripping means that is moved in the front-rear direction over a predetermined range, and each of the stationary gripping means and the movable gripping means has a pair of gripping pieces. and wherein at least one of each pair of gripping pieces is selectively positioned in an operative position in cooperation with the other to grip a sheet material therebetween and in an inoperative position away from the other. The sheet material conveying device according to any one of items 1 to 14.