JPH0597302A - Gripper for printed matter carrier - Google Patents

Abstract

PURPOSE:To simplify structure, and more surely grip or release a printed matter at a high speed by providing gripping force for the printed matter to the movable body of an oscillating type gripper by a toggle mechanism using a spring. CONSTITUTION:When a working body 4 is pushed down by an external force, a movable body 2 is moved in the direction separating from a fixed body 1 against the tensile force of an elastic body 3 and held in a position separated from the fixed body 1 by a fixed distance. When the operating body 4 is pushed up by the external force when the movable body 2 is in the opened state, the movable body 2 is moved on the fixed body 1 side against the tensile force of the elastic body 3, and a movable frame part makes contact with a fixed frame part. Consequently, the movable frame part is pressed onto the fixed frame part by the tensile force of the elastic body 3. Since the movable body 2 is oscillated by a toggle mechanism, the oscillating speed of the movable body 2 is accelerated, and the holding time and releasing time of printed matter are shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a so-called center grip type carrier for printed matter, and relates to a gripper having a simple structure and less troubles and capable of reliably gripping a printed matter even if the thickness changes. It is a thing.

[0002]

2. Description of the Related Art Generally, in printing facilities such as newspapers and magazines, the grippers of a carrier are used to grasp the folded edges of printed materials continuously discharged from a rotary press, and send them to a counter stacker or the like. Divide by the specified quantity,
After that, the sorted printed matter is carried out by a conveyor to a process such as packing and binding. In addition, the carrier is equipped with a gripper at a constant pitch on an endless chain that moves at a predetermined speed, and the folding center of the printed matter discharged onto the delivery conveyor in a state of stacking in a tile shape with the folding front. A so-called center grip type device is often used in which the grippers are gripped by the gripper one by one and are continuously conveyed.

By the way, as a gripper of the center grip type carrier, a rotary type gripper as shown in FIGS. 8 to 10 (Japanese Patent Publication No. 58-19576) and a swing as shown in FIGS. 11 to 14 have been used. A mold gripper (EPC Publication No. 0241631) is provided for use. First, in FIGS. 8 to 10 showing the rotary gripper, 13 is a guide rail, 14a and 14b are rollers,
15 is a link body, 16 is a gripper, 16a is a gripper main body, 17 is a fixed claw, 18 is a movable claw, 19 is a sliding shaft,
Reference numeral 20 is a spring, 21 is a rotation lever of a sliding shaft, 10 is a sliding shaft pulling roller, 23 is a release lever of a movable claw, 24
Is a rotary drive of the sliding shaft, 25 is a pulling drive of the sliding shaft,
26 is an opening driving body for the movable claw, 27 is a locking mechanism for the sliding shaft,
Reference numeral 28 denotes a folded printed matter (newspaper, etc.), and the gripper 16 includes guide rollers 14a and 14b and a link body 15.
It is movably supported by the guide rail 13 at a pitch of about 102 mm.

When gripping the printed material 28, first, the sliding shaft rotary lever 21 is brought into contact with the rotary driving member 24 of the sliding shaft (FIG. 9), and the sliding shaft 7 is resisted against the elastic force of the spring 20a. Then, the movable claw 18 fixed to the lower end of the sliding shaft 19 is fitted under the folding opening of the printed matter 28 stacked in a tile shape by rotating the same by 90 ° (FIG. 10). Next, the slide shaft pull-up driving member 25 is brought into contact with the slide shaft pull-up roller 22, and the slide shaft 19 is resisted against the elastic force of the spring 20a via the roller 22 pivotally supported by the slide shaft 19. Pulled up, printed matter 2
The folding part of No. 8 is held between the fixed claw 17 and the movable claw 18. The sliding shaft 19 pulled upward against the elastic force of the spring 20 a is provided at the corner portion 2 of the sliding shaft locking mechanism 27.
7a is pressed against the outer surface of the sliding shaft 19 to be held at the pulling position (grasping position). On the other hand, when the gripped printed material 28 is released, the movable pawl opening drive body 26 pulls up the movable pawl opening lever 23, and the sliding shaft 1
The engagement between 9 and the corner portion 27a of the locking mechanism 27 is released. As a result, the sliding shaft 19 moves 9
The printed matter 28 held between the fixed claw 17 and the movable claw 18 is released by being rotated downward by 0 ° and pushed down by the elastic force of the spring 20a (FIG. 8).

Next, FIG. 11 showing an oscillating gripper.
In FIG. 14, 29 is a fixed body of the gripper 16, 3
Reference numeral 0 is a movable body, 31 is a movable body support shaft, 32 is a movable body closing roller, 33 is a coil spring release claw body, 34 is a coil spring that imparts a gripping force to the movable body 30, and 35 is a movable body portion leaf spring. In addition, the movable body support shaft 3 is formed by the release claw body 33 of the coil spring and the coil spring 34.
1 is a so-called one-way clutch. The gripper 16 is movably attached to the guide rail 13 via the guide rollers 14a and 14b and the link body 15 at a pitch of about 55 mm.

When gripping the printed matter 28, first, an opening driving body (not shown) of a movable body arranged on the rail 13 side is brought into contact with the opening claw body 33. As a result, the elastic force of the coil spring 34 attached to the movable body support shaft 31 is released, and the movable body 30 is lowered in the direction of the arrow in FIG. 12, thereby expanding the gap between the fixed body 29 and the movable body 30. next,
The center of the printed matter 28 on the folding side is fed into the movable body 30 by a feeding device (not shown), and then the closing roller 32.
Is brought into contact with the closing cam (not shown), and the movable part leaf spring 35 of the movable body 30 is pressed to the fixed body 29 side,
The printed matter 28 is held between the two 29, 30. Further, when releasing the gripped printed material 28, the opening claw 33 of the coil spring is rotated about 90 ° by a gripper opening driving body (not shown) provided on the rail 13 side, thereby supporting the coil spring 34 and the movable body. Release the engagement with the shaft 31,
The elastic force of the coil spring 34 applied to the movable body 30 is lost. That is, since the coil spring 34 is free from the movable body support shaft 31, the movable body 30 fixed to the shaft 31 loses the gripping force, and the printed matter 28 is released from the gripper 16.

[0007]

Each of the above-mentioned conventional grippers 16 has been put to practical use, and exhibits excellent practical utility. However, many problems remain to be solved in these grippers. First, in the former rotary gripper (FIGS. 8 to 10), when the printed matter 28 is loaded (gripped), two movements of rotation (90 °) and pulling up of the sliding shaft 19 are required. The structure of the gripper itself becomes complicated, and it is difficult to increase the gripping speed of the printed matter.
Since it fits into the space between the folding openings, the position of the printed matter 16 in the height direction needs to be regulated extremely accurately, and the adjustment mechanism of the guide on the printed matter supply side becomes extremely complicated. By pressing the corner portion 27a against the outer surface of the sliding shaft 19, the sliding shaft 19 is held and fixed against the elastic force of the springs 20a and 20b.
There is a problem that the sliding shaft 19 is severely damaged, and if the elastic force of the spring 20a is strengthened, error motion is likely to occur. Further, when the printed matter 28 is unraveled (released), the movable claw 18 descends and rotates 90 °, so that the movable claw 18
There is a problem that the posture of the printed matter 28 is easily disturbed by the catch of the paper, and the paper is easily damaged by the catch of the movable claw 18 when the printed matter 28 is thin.
Further, since the gripper 16 is located on the side of the guide rail 13, the axis of the rail 13 and the center position of the printed matter 28 are deviated from each other. As a result, the guide rail 1
When the moving speed (peripheral speed) of the printed matter 28 in the curved portion of 3 is increased, the conveyance becomes unstable, and there is a problem that a relatively wide lateral space is required to install the carrier device.

On the other hand, the latter swing type gripper (see FIG. 11).
Also in FIG. 14), since the gripping force is applied to the movable body 30 by utilizing the elastic reaction force when the coil spring 34 is wound, it is difficult to set the gripping force itself to be large. Since the coil spring 34 is repeatedly tightened and unwound, the spring 34
Since the frequency of breakage of the printed matter 28 becomes extremely high, a lot of labor is required for inspection and repair, and the gripping force between the movable body 30 and the fixed body 29 is relatively weak, the adaptability to the change in the thickness of the folded edge of the printed matter 28 is remarkable. Poorly, the printed matter 28 may fall off during transportation even if the thickness is slightly changed, and when the printed matter 28 is a so-called section fold, the falling off becomes more severe, and the link body 15 passes through the four rollers. Since it is inserted into the guide rail 13, it is difficult to reduce the radius of the curved portion in the horizontal direction. The present invention is intended to solve the above-mentioned problems in the gripper of the conventional sender grip type carrier,
(EN) An oscillating gripper having a simple structure, capable of quickly and reliably gripping a printed matter with a relatively large gripping force, and having a radius of a curved portion of a guide rail set to be smaller.

[0009]

SUMMARY OF THE INVENTION The present invention provides a movable body of an oscillating gripper with a gripping force (clutching force) of a printed matter by a torgu mechanism using a so-called coil spring.
It is characterized in that the link body is inserted and attached to the guide rail via one traveling roller and one guide roller. That is, the first aspect of the present invention is a fixed body 1 including a flat surface portion and a flat plate-shaped fixed jaw portion connected to the flat surface portion; an upper end portion of the fixed body 1 is rotatably supported and fixed to the fixed jaw portion. A movable body 2 having a movable jaw part for moving the movable jaw part, which is interposed between the fixed body 1 and the movable body 2 in a tensioned state, and a pressing force is applied to the movable jaw part that is in contact with the fixed jaw part by its pulling force. And an elastic body 3 that holds and holds the movable jaw part that is away from the fixed jaw part; and an elastic body 3 that is provided on the movable body 2 and resists the tensile force of the elastic body 3 when an external force is applied to the movable body 2. The actuating body 4 that moves in the direction in which it comes into contact with the fixed body 1 or in the direction away from the fixed body 1 is the basic configuration of the invention. Further, the second invention of the present application is that the gripper is fixed below a link body horizontally provided with one guide roller at a lower position between two traveling rollers and both traveling rollers. It is to be configured.

[0010]

When the actuating body 4 is pushed down by an external force, the movable body 2 is moved in the direction away from the fixed body 1 against the tensile force of the elastic body 3, and the movable body 2 is moved away from the fixed body 1 by a certain distance. Held in. That is, at a position where the axis of the elastic body 3 is below the axis of the movable body supporting shaft 5,
The movable body 2 is held in the open state by the elastic force of the elastic body 3. When the movable body 2 is in the open state and the actuating body 4 is pushed upward by an external force, the movable body 2 moves to the fixed body 1 side against the tensile force of the elastic body 3, and the movable jaw part Abut the fixed jaw (closed state). At this time, the axis of the elastic body 3 is located above the axis of the movable support shaft 5, and as a result, the movable jaw is pressed toward the fixed jaw by the tensile force of the elastic body 3. Further, since the movable body 2 is swung by the so-called toggle mechanism, the swinging speed (moving speed) of the movable body 2 is increased, and the grip time and the release time of the printed matter are shortened.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a gripper A according to the present invention, FIG.
And FIG. 3 shows the gripper A attached to the link B.
Fig. 4 is a side view of the gripper while the newspaper is being conveyed,
FIG. 5 shows a link B in which a part of the guide rail C is cut away.
FIG. 1 to 5, 1 is a fixed body, 2 is a movable body, 3 is an elastic body, 4 is an operating body, 5 is a movable body supporting shaft, and the gripper A of the present invention is formed from the above-mentioned members. Has been done. The fixed body 1 has a rectangular horizontal portion 1a.
And the horizontal portion 1a is integrally formed from a fixed plate-like fixed jaw portion 1b that is continuous at an inclination angle of about 90 ° in a side view. Further, the elastic portions are provided on both sides of the horizontal portion 1a. Support pieces 1d, 1d for supporting and fixing one end of the body 3 are provided to project outward. Also, the jaw portion 1b of the horizontal portion 1a
A thick portion 1e is formed on the side, and an insertion hole for the movable body support shaft 5 is formed therein. In the figure, 1c is a non-slip plate provided on the fixed jaw, 1g is a positioning pin of the link body, 1h and 1i are bolt holes, and 1f is a retaining pin of the elastic body 3.

The movable body 2 has a rectangular flat plate-shaped movable jaw portion 2a, and a support portion 2b projecting above the movable jaw portion 2a with a space therebetween.
2b and the insertion hole 2c of the support shaft 5 formed in the support portion 2b. The thick portion 1e of the fixed body 1 is inserted between the support portions 2b, 2b to insert both insertion holes 2c. To support shaft 5
Is inserted, the supporting portions 2b, 2b of the movable body 2 are pivotally supported on the fixed body 1 so as to be swingable in the arrow direction. Further, one end of a retracting pin 2d of an elastic body 3 which will be described later is fixed to approximately the center of the supporting portions 2b, 2b of the movable body 2.
Each of the tips projects outward. Further, an actuating body 4 described later is attached to one end of the pin 2d.

The elastic body 3 is formed of a coil spring and is arranged between the retaining pin 1j of the fixed body 1 and the retaining pin 2d of the movable body 2, and both ends of the elastic body 3 are stretched. The part is fixed to both detent pins 1j and 2d. That is, the fixed point P of the elastic body 3 on the movable body 2 side is outside the axis O of the support shaft 5 in a side view (FIG. 4), and a so-called toggle mechanism is formed by the support shaft 5 and the spring 3. It is configured. As a result, by moving the fixed point P of the elastic body 3 upward by an external force, the movable body 2 is moved in the direction in which it abuts on the fixed body 1. Further, when the axis of the elastic body 3 comes above the axis O of the support shaft 5, the elastic force of the elastic body 3 causes the movable jaw 2 a of the movable body 2 to contact the fixed jaw 1 b of the fixed body 1. The gripper A is held in the contacted state, and the gripper A is in the gripped state (closed state). Conversely, when the fixed point P is moved downward by an external force, the movable body 2 is moved in a direction away from the fixed body 1, and the axis of the elastic body 3 comes below the axis O of the support shaft 5. By the elastic force (tensile stress) of the elastic body 3, the gripper A is held in the released state (open state).

The actuating member 4 is for moving the fixing point P of the elastic member 3 upward (or downward) against its elastic force, and in this embodiment, an engineering plastic roller is actuated. It is used as the body 4 and is rotatably supported by the tip of the retaining pin 2d.

In this embodiment, the elasticity 3 is provided on both sides of the fixed body 1, but it may be provided on only one of them. Further, although the roller is used as the actuating member 4 in the present embodiment, it may be a sliding piece having a small frictional resistance. Further, in this embodiment, the actuating member 4 is provided on the right side (front side in FIG. 1) of the fixed member 1 in a front view, but it may be provided on the left side of the fixed member 1.

The link B includes a link body 6, two traveling rollers 7, one guide roller 8 and a link connecting pin 9.
Etc. The link body 6 has bifurcated connecting receiving pieces 6a, 6a in the front part and connecting projecting pieces 6b in the rear part, each of which is provided with a shaft insertion hole.
Further, a bearing 6c holding an inner ring rotatably in an arbitrary direction is fitted into a shaft insertion hole formed in the connecting projection 6b. Further, the connection receiving pieces 6a, 6 of the link body 6
A storage recess 6d for the guide roller 8 is provided below a, and the guide roller 8 is horizontally arranged in the storage recess 6d and serves also as a fixing member for the link body 6 and the fixed body 1. It is rotatably supported by the tip of the support pin 6e.

The link body 6 has a gripper A on its bottom surface.
The fixing pin 1g is fixed on the flat surface of the fixed body 1 by inserting the fixing pin 1g on the fixed body side into a matching hole (not shown) on the link body 6 side and tightening the bolt 10 and the support pin 6e. It is fixed above the body 1 (Fig. 3). In addition, the link body 6 has a bifurcated connection receiving piece 6
By fitting the linking projecting piece 6b of the other link body 6 into a and 6a and fitting the link linking pin 9 into the insertion holes of both, they are linked in a swingable state. The link connecting pin 9 also serves as a support shaft of the traveling guide roller 7, and the roller 7 is rotatably supported at both ends of the connecting pin 9 (FIG. 5).

Next, the operation of the gripper A according to the present invention will be described. The plurality of grippers A are connected to each other by a link connecting pin 9, and are moved in a direction indicated by an arrow at a predetermined speed by a driving device (not shown) in a state shown in FIGS. 4 and 5. When the gripper A travels to a predetermined unloading place, the operating body 4 of the gripper A comes into contact with the inclined surface 11a of the unloading cam plate 11 provided on the guide rail C side as shown in FIG. The actuation body 4 is pushed downward. Thereby, the movable jaw 2 of the movable body 2
a is moved in the direction away from the fixed jaw 1c of the fixed body 1, and the gripped printed material D is released. Also, the elastic body 3
The movable body 2 is held in an open state by moving the axis of the movable body 2 below the axis O of the movable body supporting shaft 5, and the movable body 2 advances in the direction of the arrow in this state.

Further, when the gripper A travels to a predetermined loading place, as shown in FIG. 7, the printed material D is partially transferred by a feeding device (not shown) to the movable body 2 and the fixed body in which the gripper A is opened. After that, the actuating body 4 of the gripper A that has received the folding opening of the printed matter D is pushed upward by the inclined surface 12a of the loading cam plate 12. As a result, the movable body 2 moves to the fixed body 1 side, the movable jaw comes into contact with the fixed jaw, and the tensile stress of the elastic body 3 presses the movable jaw 2a against the fixed jaw 1b with a predetermined pressure. As a result, the printed matter D is gripped. Incidentally, in FIG. 7, 12b is a cam plate actuating device.

[0020]

According to the present invention, the movable body 2 is swingably supported on the fixed body 1, the elastic body 3 is arranged between the two, and the elastic body 3 is stretched. By fixing both ends to the fixed body 1 and the movable body 2 on both sides of the axis O of the support shaft, the movable body 2 is brought into contact with the fixed body 1 or separated from the fixed body 1 by a so-called toggle mechanism. It has a strict configuration. Therefore, compared to the conventional gripper, the structure itself of the gripper can be greatly simplified, and the gripping force required without difficulty can be obtained by appropriately selecting the elastic body, and more reliable gripping of the printed matter and It can be transported. Further, due to the characteristics of the toggle mechanism, the operating speed of the movable body 2 is increased, the time required for unloading or loading the printed matter is shortened, and the carrying capacity is greatly improved, and the elastic body 3 is repaired due to breakage or the movable body 2 is used. The printed matter will not be damaged due to being caught in the paper. Further, in the present invention, the link body 6 is supported by two traveling rollers and one guide roller horizontally provided below the traveling rollers, and at the same time, the link body 6 is arbitrarily inserted into the connecting pin insertion hole of the connecting protrusion 6b of the link body 6. Bearing 6 with an inner ring that can rotate in any direction
Since c is fitted, the radius of the curved portion of the guide rail can be greatly reduced, and the layout of the carrier device can be significantly facilitated. As described above, the present invention has excellent practical utility.

[0021]

[Brief description of drawings]

FIG. 1 is a perspective view of a gripper according to the present invention.

FIG. 2 is a perspective view of the gripper fixed to the link body as viewed from above.

FIG. 3 is a perspective view of the gripper fixed to the link body as viewed from below.

FIG. 4 is a side view showing a conveyed state of a printed matter by a carrier using the gripper of the present invention.

5 is a plan view of the guide rail of FIG. 4 in a broken state.

FIG. 6 is an explanatory view of the unloading operation of the gripper.

FIG. 7 is an explanatory diagram of a loading operation of the gripper.

FIG. 8 is a schematic sectional view of a conventional rotary gripper.

FIG. 9 is an operation explanatory view (front view) of the gripper shown in FIG. 8;

FIG. 10 is an operation explanatory view (side view) of the gripper shown in FIG. 8;

FIG. 11 is a front view of a conventional rocking gripper.

12 is a side view of the gripper of FIG. 11. FIG.

13 is a cross-sectional view showing a coil spring insertion part of the gripper shown in FIG. 11;

FIG. 14 is a plan view in which a part of the guide rail of the carrier using the gripper of FIG. 11 is cut away.

[Explanation of symbols]

A Gripper 1a Horizontal part B Link 1b Fixed jaw C Rail 1c Non-slip plate D Printed material (newspaper) 1d Support piece O Movable body support shaft axis 1e Thick part P Elastic body fixed point (movable body side) 1f Retention pin Q Elastic material fixed point (fixed body side) 1g Alignment pin 1 Fixed body 1h Bolt hole 1i Bolt hole 6c Bearing 2 Movable body 6d Storage recess 2a Movable jaw 6e Support pin 2b Support 7 Traveling roller 2c Insertion hole 8 Guide Roller 2d Pulling pin 9 Link connecting pin 3 Elastic body 10 Bolt 4 Actuating body 11 Unloading cam plate 5 Movable body supporting shaft 11a Inclined surface 6 Link body 12 Loading cam plate 6a, 6a Bifurcated connection receiving piece 12a Inclination Surface 6b Connecting protrusion 12b Cam plate actuating device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kaoru Fujisawa No. 201 Domus Katsura, 67 Katsura Inariyama-cho, Nishikyo-ku, Kyoto City, Kyoto Prefecture (72) Koichi Furusoka 3-20-4 Nishishinbashi, Minato-ku, Tokyo No. Nippon Electric Engineering Co., Ltd. (72) Inventor Matao Nakamura 2-1329 Kamimaruko Sannomachi, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Kyoritsu Electronics Co., Ltd. 2-1329, Machi Within Kyoritsu Denshi Co., Ltd.

Claims (2)

[Claims] 1. A fixed body (1) comprising a flat surface portion and a flat plate-shaped fixed jaw portion connected to the flat surface portion; a top end portion of the fixed body (1) being rotatably supported by the fixed body (1) and contacting the fixed jaw portion. A movable body (2) having a movable jaw to be contacted; the fixed body (1) and the movable body (2)
It is interposed between and in a tensioned state, and the pulling force applies a pressing force to the movable jaw contacting the fixed jaw, and
An elastic body (3) for holding and holding the movable jaw apart from the fixed jaw; provided on the movable body (2), and abutting the movable body (2) with the fixed body (1) by applying an external force. Gripper of a carrier for printed matter, which comprises an actuating body (4) that moves in a direction away from the fixed body (1). 2. A link body (6) horizontally provided with two guide rollers and one guide roller below the two guide rollers; and a flat portion fixed below the link body (6). And a fixed body (1) provided with a flat plate-shaped fixed jaw that is continuous with this
And a movable body (2) having a movable jaw, the upper end of which is rotatably supported by the fixed body (1) and which abuts on the fixed jaw.
The movable body (2) is interposed between the fixed body (1) and the movable body (2) in a tensioned state, and the pulling force imparts a pressing force to the movable jaw portion that is in contact with the fixed jaw portion and separates from the fixed jaw portion. An elastic body (3) for holding and holding the movable jaw part; a movable body (2)
Of the carrier for printed matter, which is provided on the moving body (2) and moves the movable body (2) to contact with the fixed body (1) or to move away from the fixed body (1) when an external force is applied. Gripper.