JPH0615367B2 - Vise collator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement of a vise collating machine, and more specifically, to a non-rotating mechanism in which all or a part of each cam of each cam lever mechanism unit changes in each speed ratio. The present invention relates to a vise collating machine which is connected to a drive shaft through a circular gear transmission mechanism to reduce sudden changes in the movement of cam grooves.

(Prior Art) Conventionally, in a vise type collating machine, one of the lowermost sheets of a signature on an upper table is sucked and rotated by a suction cup and bent downward, and the bent signature is gripped by a claw. It is pulled out onto the lower conveyer conveyor by the fan-shaped movement of the claw lever that is inserted into the opening at the tip.

(Problems to be solved by the invention) However, suction sucks the suction cup against the lower part of the signature to adsorb the signatures one by one, and when peeling and bending downward, the number of sheets of signature paper, art paper, coat Since the quality of paper such as paper and high-quality paper or the number of folds, 2 pages, 4 pages ... 32 pages and the number of signatures loaded in each station are various, it is necessary to adjust each station.

When the suction cup is moved up and down, the jaws are opened and closed, and the jaws are fan-shaped within a limited time (1 cycle), when the shape of each cam is unnatural and the signature is sucked, the jaws are opened and closed. As the movement such as rotation becomes faster, a sudden movement causes a movement error (chatter) at the tip part and a suction error,
There was a serious problem that reduced efficiency due to gripping mistakes and drawing mistakes.

(Means for Solving Problems) The present invention has been made to solve the above problems, and is configured as follows.

That is, the vise collating machine of the present invention is provided with a claw swing cam lever mechanism that swings a claw lever that is swingable around a claw shaft and a claw shaft and a claw lever that is provided on a rod shaft and a grip claw that is formed by the claw. A claw swing cam, a grip claw cam of a grip claw cam lever mechanism for opening and closing the grip claw of the claw swing cam lever mechanism, and a suction cam of a suction cam lever mechanism for performing suction opening / closing and vertical swing movement of a suction cup attached to a suction shaft. , Supporting claw cam that supports the vertically movable supporting claw to push up the lower part of the next part of the signature that is sucked by the suction cup and bent downward, and supports the outside air by the supporting claw cam of the lever mechanism, the lever, the valve, and the valve. It consists of the intake air cam of the intake air cam lever mechanism that sucks air or closes the outside air and sucks it in from the suction cup. All or part of these cams changes the angular velocity ratio. Is characterized in that so as to be connected to the drive shaft is less abrupt change in the motion of the cam groove through the non-circular gear transmission mechanism.

Next, the vise collating machine according to the present invention will be described in detail with reference to the following embodiments with reference to the drawings.

〔Example〕

First, the claw swing cam lever mechanism A and the grip claw cam lever mechanism B will be described with reference to FIGS. The rotation of the driven shaft 1a in FIG. 1 causes the eccentric cam 2a of the pawl swing cam 2 to rotate and the strap 3 to move up and down. Then, the vertical movement of the strap 3 is changed by the rod 4 and the crank lever 6
And the lever 9 fixed to the receiving claw shaft 7 through the rod 5, the receiving claw shaft 7 performs repetitive rotational movement. Then, the pawl lever 11 fixed to the pawl shaft 7 performs a fan-shaped motion by the repeated rotational movement of the pawl shaft 7. Reference numeral 12 is a receiving claw fixed to the claw lever 11.

Further, a bracket 13 pivotally mounted on a pawl shaft 8 held by a holding bracket 10 of a pawl shaft 8 to which the pawl shaft 7 is pivotally connected is connected by a rod shaft 14 to the pawl shaft 1.
The pawl 16 supported by the pivot pin 15 at 2 moves in the same manner as the pawl lever 11 due to the movement of the pawl shaft 7.
Further, the claw 16 is rotated by the grip claw cam 17 to grip the grip claw cam lever 18, rod 19, rod 20, link 21.
Via a bracket 13 fixed to the pawl shaft 8 by operating the pawl opening / closing lever 22 fixed to the pawl shaft 8 via the rod shaft 14 The tip of the claw 16 is opened and closed by using the support pin 15 as a fulcrum. That is, the claw lever 11 which is swingable around the claw shaft 7 and the claw shaft 8 and the grip claw 12a including the claw 12 and the claw 16 provided on the rod shaft 14 are swung and loaded on the table 29. A claw swing cam lever mechanism A for pulling out one of the signatures 30 at the lower end of the signature 30 with a gripper claw 12a onto the conveying conveyor 31 and a gripper claw cam lever mechanism B for opening and closing the gripper claw 12a of the claw swing cam lever mechanism A are configured. ing. Note that 1b is a driven shaft that is wedged to the gripper cam 17.

Next, in FIG. 3, the suction shaft 27 is attached to the suction shaft 27 by actuating the suction shaft 27 via the cam levers 24, 25, the rod 26, etc. by rotation of the suction cam 23 wedged on the driven shaft 1c.
As shown in FIG. 6, one of the signatures 30 at the lower end of the table 29 is attracted to the suction cup 28 (by the valve and the valve cam) by opening and closing (incision of eight) the intake air and bent downward.

That is, a suction cam lever mechanism C for opening and closing the intake air and vertically swinging the suction cup 28 attached to the suction shaft 27 directly below the table 29 is configured.

In FIGS. 4 and 6, the support claw 36 attached to the claw shaft 35 is actuated and bent by the movement of the support claw cam 32, the cam lever 33, and the rod 34 wedged on the driven shaft 1d. The lower part of the signature 30 next to the signature 30 is pushed upward, is attracted and is pulled out by the gripper 12a, and the signature 30 of the upper part is supported upward so that the weight of the upper signature 30 is reduced and is also pulled out again. The signature supports the signature 30 above it so that it will not be pulled out at the same time. Then, when the suction cup 28 moves upward, the supporting claws 35 are lowered forward and downward, and the sucked signature 30 is retracted to a position that does not interfere with the downward bending. Then, when the signature 30 is bent downward, it moves upward again to perform the above-mentioned operation. That is, the support pawl cam lever mechanism D is supported by a support pawl 36 that is vertically rotatable and pushes up the lower part of the signature 30 that is next to the bottom of the signature 30 at the lower end of the folded signature 30 that is sucked by the suction cup 28 and bent downward. It is configured.

Further, the intake air from the vacuum pump is connected to the lever, valve, and valve 38 by the intake air cam 37 attached to the driven shaft 1e.
The intake air cam lever mechanism E is configured so that the outside air is sucked in or the outside air is closed and sucked through the suction cup 28 (see FIG. 7).

It should be noted that the signatures 30 at the lower end of the table 29 are sucked by the suction cups 28 and bent downward.
0 is pinched into the opening at the tip of the jaw of the holding jaw 12a, and is moved by the fan-shaped movement of the jaw lever 11 to convey the conveyor 31 (sixth).
(Figure) It is designed to be pulled out.

Next, the non-circular gears 41 and 42 are as shown in FIG. 8. The drive-side non-circular gear 41 has a portion with a high pitch radius and a portion with a low pitch radius, but the pitch circumference is the same as that of the driven-side non-circular gear 42. The driven non-circular gear 42 also has a portion with a high pitch radius and a portion with a low pitch radius, and the high portion on the drive side and the low portion on the driven side mesh with each other, and the circumference of the low portion on the drive side is the same as the high portion on the driven side. Although it is a circle, since the pitch circle occupying the angle is different, the operating angle on the driving side and the operating angle on the driven side are different, and the rotation angle is different, so that rotation can be moderated. 39,
40 is a boss for the non-circular gears 41, 42.

In the embodiment, as shown in FIG. 7, each driven shaft 1a, 1
b, 1c, 1d and 1e are the same single common driven shaft 1, and the driven shaft 1 is connected to the drive shaft 44 on the side of the motor 43 through the non-circular gears 41 and 42 transmission mechanism. . That is, in the illustrated embodiment, the pawl swing cam lever mechanism A
Claw swing cam 2, gripper claw cam 17 of gripper cam lever mechanism B, suction cam 23 of suction cam lever mechanism C,
All of the support pawl cam 32 of the support pawl cam lever mechanism D and the intake air cam 37 of the intake cam lever mechanism E are connected to the drive shaft via a non-circular gear transmission mechanism whose angular velocity ratio changes,
Although the sudden change in the movement of each cam groove is reduced, only a part (1 to 4) of the cam is connected to the drive shaft via the non-circular gear transmission mechanism, and the other part (the remaining part) is connected. ) It is also possible to reduce the sudden change in the movement of the cam groove only for the cam in which the non-circular gear transmission mechanism is interposed by connecting the cam to the drive shaft through the ordinary spur gear transmission mechanism. It can be selectively performed as appropriate.

(Effect of the invention) When the suction cup is moved up and down, the jaws are opened and closed, and the fan-shaped movement of the jaws is performed within a limited time (one cycle), when the shape of each cam becomes unnatural and the signature is adsorbed, The movement such as opening and closing of the claw causes a motion error (chatter) at the tip portion due to a sudden movement as the rotation speed becomes faster, but in the present invention, by using a non-circular gear, Since the early and late parts of the rotational motion occur in one cycle (one revolution), the abrupt part of the motion of the cam mizo is adjusted to the slow part to reduce the abrupt change of the motion, and It is possible to suppress chattering.

Therefore, it is possible to eliminate the risk that the suction efficiency, the gripping error, the drawing error, etc. may occur and the efficiency may be reduced.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an explanatory view of a main part of a pawl swing cam lever mechanism, FIG. 2 is an explanatory view of a main part of a gripper pawl cam lever mechanism, and FIG. 3 is a main part of a suction cam lever mechanism. Explanatory drawing, FIG. 4 is an explanatory view of essential parts of a supporting pawl cam lever mechanism, FIG. 5 is a side view of a gripper pawl, FIG. 6 is an explanatory view of essential parts of a collator, and FIG. 7 is an explanatory view of the transmission mechanism part. FIGS. 8 and 9 are explanatory views of non-circular gears, and FIG. 9 is a chart comparing one cycle momentum change states when the non-circular gears of the present invention are used and when ordinary spur gears are used. Fig. 11 is a diagram for the suction cam, Fig. 11 is a diagram for the air valve, Fig. 12 is a diagram for the claw cam lever, Fig. 13 is a diagram for the gripper opening / closing movement, and Fig. 14 is the same claw swing. It is a chart about the movement of the gripper. 1, 1a to 1e ... driven shaft, 2 ... claw swing cam, 2
a ... Eccentric cam, 3 ... Strap, 4, 5 ... Rod, 6 ... Crank lever, 7 ... Claw shaft, 8 ... Claw shaft, 9 ... Lever, 10 ... Holding bracket, 11 ... …
Claw lever, 12 ... Receiving claw, 12a ... Holding claw, 13 ...
… Bracket, 14 …… Rod shaft, 15 …… Pivot pin,
16 ... claw, 17 ... grip claw cam, 18 ... grip claw cam lever, 19, 20 ... rod, 21 ... link,
22 ... claw opening / closing lever, 23 ... sucking cam, 24, 25
...... Cam lever, 26 ...... Rod, 27 …… Suction shaft, 2
8 ... sucker, 29 ... table, 30 ... signature, 31 ...
... Conveyor, 32 ... Supporting cam, 33 ... Cam lever, 34 ... Rod, 35 ... Pawl shaft, 36 ... Supporting pawl, 37 ... Intake air cam, 38 ... Valve, 39, 4
0 ... Boss, 41, 42 ... Non-circular gear, 43 ... Motor, 44 ... Drive shaft, A ... Pawl swing cam lever mechanism, B ... Grip pawl cam lever mechanism, C ... Suction cam lever mechanism, D ... … Supporting pawl cam lever mechanism, E …… Intake air cam lever mechanism,

Claims (1)

[Claims] 1. A lower end of a signature stacked on a table by swinging a receiving claw shaft and a claw lever swingable around the claw shaft and a grip claw formed of a claw and a claw provided on a rod shaft, respectively. Claw swing cam lever mechanism claw swing cam that pulls out one signature with the jaw
Claw swing cam lever mechanism The gripper cam of the gripper cam lever mechanism that opens and closes the gripper claw, and the suction cam of the suction cam lever mechanism that performs the intake opening and closing and the vertical swing movement of the suction cup attached to the suction shaft directly below the table. A support pawl cam of a lever mechanism, a support pawl cam of a lever mechanism, a lever,
The intake shaft consists of a valve and an intake air cam of an intake air cam lever mechanism that sucks in the outside air by the valve or closes the outside air and sucks it in from the suction cup. All of these cams are driven by a non-circular gear transmission mechanism whose angular velocity ratio changes. Or only some of these cams are connected to the drive shaft via the non-circular gear transmission mechanism and the other cams are connected to the drive shaft via the ordinary spur gear transmission mechanism and are connected to the non-circular gear transmission. A vise collating machine characterized by reducing sudden changes in the movement of the cam groove of a cam that has a mechanism.