JP2652531B2 - Workpiece fixed position stop device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fixed position of a work for stopping a work such as a piston of an automobile engine at a fixed position at a predetermined interval in a work transfer direction of a conveyor. It relates to a stop device.

[Conventional technology]

Almost all of the pistons of the automobile engine (which are examples of works to which the present invention is applied, and are hereinafter referred to as pistons or works as necessary) are plated except for special ones. Conventionally, during the plating process, the pistons, which are irregularly transferred by the conveyor, are stored at the end of the conveyor, and the pistons are manually transferred one by one to a predetermined position on the pallet so as not to contact each other. This pallet is carried into the plating facility.

[Problems to be solved by the invention]

However, such a manual operation is extremely inefficient and has a problem in that automation such as incorporating a plating line into a piston transfer line cannot be achieved.

Alternatively, in order to solve the above-mentioned inconvenience, it is conceivable to adopt an automatic mode in which a piston sequentially transferred by the conveyor is transferred to a predetermined position on a pallet by an automatic transfer device, a robot.

However, since the pistons transferred by the conveyor are transferred in a state in which they are in contact with each other in the transfer direction or in an irregular state with irregular intervals, for example, a robot provided with two work hands at a predetermined interval As a result, it is not possible to take an efficient transfer form in which two pistons are taken out at once, and they are transferred to the pallet at a predetermined interval. Therefore, a stopper is provided at the piston take-out position of the conveyor. The robot located at the piston removal position is moved by the robot to 1
The pallets must be transferred to predetermined positions on the pallet one by one, which is more efficient than in the case of manual operation, but is desired to be able to transfer the pistons more efficiently.

The present invention has been made in view of the above circumstances, and, among works sequentially transferred by a conveyor,
An object of the present invention is to provide a device capable of stopping two pieces at predetermined positions at predetermined intervals, thereby enabling efficient transfer of a workpiece by a robot having two workpiece hands.

[Means for solving the problem]

The fixed position stopping device for a work according to the present invention which has achieved the above object has the following configuration.

That is, a first stopper for positioning a work to be transferred by a conveyor is reciprocally movable from a first position to a second position on an upstream side in a work transfer direction, and a work to be transferred in a line in the work transfer direction is provided. A third stopper for stopping the transfer of the second one of the two workpieces transferred when the second stopper for stopping the transfer is located at the work standby position on the upstream side of the second position and the transfer stop of the second stopper is released. Are provided at a work interval defining position between the first position and the second position so as to be swingable, respectively, and further, the second stopper is biased to the transfer stop posture and to the third stopper transfer stop release posture. First and second urging means for oscillating are provided, and the second stopper is moved to stop by acting on a cam follower attached to the second and third stoppers. A cam member for and oscillating the third stopper to the transfer stop position in dividing position and continuously to the first stopper, with the second of said first stopper
A state in which the second and third stoppers are switched to the transfer stop releasing posture when moving forward to the position, and a third stopper is inserted between the two works when the first stopper moves back to the first position. Thus, the third stopper and the second stopper are configured to be switched to the transfer stop posture.

[Action]

According to the above-mentioned characteristic configuration, by stopping the transfer of the work by the second stopper by moving the first stopper forward, two of the works positioned at the work standby position in the work transfer direction are removed. It is transferred to two positions.

When the first stopper is moved backward, the second stopper is switched to the transfer stop posture,
While the two works are being moved toward the first position, a third stopper is inserted between the two works, and a rear part of the two works is moved by the third stopper to a work interval defining position. And the transfer of the front work is stopped at the first position.

That is, by moving the first stopper one reciprocating motion, two works at the work standby position are taken out to the work interval defining position and the first position located at a predetermined interval.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a transfer facility B for transferring a workpiece W to a plating facility A.
2 and 3 show details of the work transfer equipment B.

In the drawing, reference numeral 1 denotes a double work transfer conveyor for carrying a work W to a pallet placing table 3 which is conveyed along a plating material suspending line 2; Two sets of seesaw-type stoppers 5 are provided for sequentially sending out two workpieces W successively transferred side by side in the transfer direction to the downstream side.

Reference numeral 6 denotes a double conveyor for unloading the work, which does not require the plating treatment of the work W transferred by the work transfer conveyor 1, or which has been taken out from the hanging line 2 for plating. The work W after the plating is completed is transferred.

Reference numeral 7 denotes a device for automatically transferring the work W, a so-called robot, which is provided with an arm 8 provided with two work hands at a predetermined pitch in an X-axis direction along the work transfer direction of the conveyor 1 (see FIG. 1). Left-right direction), a Y-axis direction (the front-rear direction in FIG. 1) along the direction in which the workpiece transfer conveyors 1 are arranged, and a Z-axis direction perpendicular to the X, Y-axis directions (perpendicular to the paper surface in FIG. 1). Direction).

The robot 7 chucks the two works W taken out at predetermined positions at predetermined intervals by the work W fixed position stopping device 9 described later, and the two works W need to be plated. In this case, the two works W are transferred to the pallet 10 provided on the pallet placing table 3, and if the two works W do not require plating, the two works W The work W is transferred to the work transfer conveyor 6 and any one of the works W
When the plating process is not required, one of the works W is transferred to the work transfer conveyor 6 and the other work W is transferred to the pallet 10 next, and In addition, the plating material suspension line 2
The work W on the pallet 10 taken out of the pallet 10 is transferred onto the conveyor 6 for carrying out and transferring the work.

Next, a specific structure of the fixed work stop device 9 for one of the two parallel work transfer conveyors 1 will be described.

That is, as shown in FIGS. 2 to 4, a pair of work guides are provided on the upper portion of the conveyor 1 on the downstream side in the work transfer direction.
11 and a guide rod 12 on the side of the conveyor 1 along the workpiece transfer direction.
A first position for positioning a workpiece W transferred by the conveyor 1 is placed on a base 13 erected reciprocally along the base 12.
The first stopper 14 is configured to be reciprocally movable from a first position D near the end of the conveyor 1 in the work transfer direction to a second position E on the upstream side in the work transfer direction.

The vertical axes 15 and 16 are respectively set to a work standby position F upstream of the second position E in the work transfer direction and a work interval defining position G between the first position D and the second position E. Work transfer which pivotally connects the second and third stoppers 17 and 18 via each other, and causes each of the second and third stoppers 17 and 18 to protrude into the transfer trajectory of the work W on the downstream side in the work transfer direction. The posture can be freely switched between a stop posture P and a transfer stop release posture (see FIG. 7) Q retracted out of the trajectory, and the second stopper 17 is biased and rocked to the transfer stop posture P. A first biasing means (illustratively a coil spring) 19 and a second biasing means (similarly a coil spring) 20 for biasing and swinging the third stopper 18 to the transfer stop releasing posture Q are provided. It is.

Further, roller-type cam followers 21 and 22 are provided at a stopper portion of the second stopper 17 on the upstream side in the work transfer direction and a stopper portion of the third stopper 18 on the downstream side in the work transfer direction, respectively.
A cam member 23 for changing the posture, which acts on the second stopper 17 to swing the second stopper 17 to the transfer stop releasing posture Q and the third stopper 18 to the transfer stop posture P, is connected to the first stopper 14. is there.

More specifically, during the movement of the first stopper 14 from the first position D toward the second position E,
The stopper 18 is switched to the transfer stop canceling posture Q by the urging force of the second urging means 20, and the stopper 17 is also stopped at a time later than the urging force of the first urging means 19. Release posture Q and the first
While the stopper 14 is moving backward from the second position E toward the first position D, the second stopper 17 is switched to the transfer stop posture P by the urging force of the first urging means 19. At the same time, the third stopper 18 is similarly switched to the transfer stop posture P against the urging force of the second urging means 20 slightly later than this.

The first stopper 14 is provided on a member connected to the base 13 so as to be freely changeable in the work transfer direction with respect to 24, and the distance between the first position D and the work space defining position G is set. The first position D may be changed in accordance with the work-hand interval of the robot 7 or when the work-hand interval of the robot 7 is changed or replaced with a different one. It is configured to be able to.

Hereinafter, the operation of taking out the work W to the first position D and the work gap defining position G in a state where the work W is taken out in a predetermined cycle will be described with reference to FIGS. 5 to 10. .

First, as shown in FIG. 5, the work W is taken out at the first position D and the work gap defining position G as specified, and the work standby position F of the second stopper 17 is set.
In a situation where two workpieces W are waiting in line in the workpiece transfer direction, the two workpieces W taken out at the two positions D and G are moved by the workpiece hand of the robot 7 shown in FIG. And the two works W are transferred to a predetermined position of the pallet 10 on the pallet table 3.

At the time of transfer of the work W, if neither of the two works W requires plating, the two works W are transferred to the work transfer conveyor 6 or one of them. If the work W does not require plating, for example, the one work W is first transferred to the conveyor 6 for carrying out and transferring the work, and then the other work W
Is transferred to a predetermined position on the pallet 10.

Next, as shown in FIG. 6, when the work W existing at the first position D and the work gap defining position G is taken out, the first stopper 14 is moved together with the cam member 23 to the second position E. , The first stopper 18 is first switched to the transfer stop release posture Q by the urging force of the second urging means 20 by releasing the action of the cam member 23 on the cam follower 22 of the third stopper 18. At the same time, the second stopper 17 resists the urging force of the first urging means 19 as shown in FIG. 7 by the cam action of the second stopper 17 on the cam follower 21 due to the further forward movement of the cam member 23. The two workpieces W, which have been located at the workpiece standby position F, are switched to the second position E.
Transported to

Here, as shown in FIG. 8, the cam member 23 is moved backward toward the first position D together with the first stopper 14, and the second stopper is moved by the backward movement of the cam member 23.
By releasing the cam action on the 17 cam followers 21,
The second stopper 17 is switched to the transfer stop posture P by the urging force of the first urging means 19, and the second stopper 17 prepares for the standby of the next two workpieces W and is positioned by the first stopper 14. The moved work W is transferred toward the first position D.

As shown in FIG. 9, during the transfer of the two works W in accordance with the further reciprocation of the cam member 23 and the first stopper 14, the one in front of the two works W is defined as the work interval. Immediately before passing through the position G, the cam member 23
Acts on the cam follower 21 of the third stopper 18,
The third stopper 18 is switched to the transfer stop posture P so that the third stopper 18 enters between the two works W against the urging force of the second urging means 20. The transfer of the one behind the two works W is stopped at the work spacing specified position G.

Further, as shown in FIG. 10, when the first stopper 14 reaches the first position D, the backward drive is stopped, so that the one in front of the two works W is moved to the first position D. D
And the second stopper 17 is switched to the transfer stop posture P, and the seesaw stopper 5 is rocked by a seesaw in a later step, so that the stopper is positioned alongside the work stock unit 4. The two front works W are taken out, and the two works W are transferred to the work standby position F by the second stopper 17. One cycle of the work transfer is completed as described above. This is the state shown in FIG.

That is, by moving the first stopper 14 one reciprocating motion together with the cam member 23, the two works W located at the work standby position F can be separated from the work interval defining position G and the first position D at a predetermined interval. In addition to this, another two works W are newly taken out to the work standby position F of the second stopper 17.

Thus, the two works W taken out at the two positions G and D at a predetermined interval can be chucked at once by one robot 7 having two work hands. The two works W are transferred to the pallet 10 or the work transfer conveyor 6 or the two works W are transferred one by one to the work transfer and transfer conveyor 6 and the pallet 10 one by one. It can be done.

In FIG. 4, reference numerals 25 and 26 denote sensors for detecting the presence or absence of the work W at the first position D and the work gap defining position G, and reference numerals 27 and 28 denote the second and third stoppers 1.
It is a stopper member for positioning the transfer stop posture P of 7,18.

〔The invention's effect〕

As described above, the fixed position stopping device for a work according to the present invention moves the first stopper and the cam member connected to the first stopper one reciprocally, and moves the second and third stoppers in conjunction with the first stopper and the cam member. A point at which the two positions of the work located at the work standby position are taken out at a predetermined interval from the work spacing specified position and the first position by switching between the transfer stop position and the transfer stop release position. Has features.

That is, two pieces of the works transferred from the work transfer conveyer in contact with each other or at irregular intervals can be sequentially taken out at predetermined work intervals to the work interval specified position and the first position. It is possible to take a work form such as chucking one work at a time by a robot having two work hands, and transfer the work transferred by the conveyor to a pallet or the like. This has made it possible to efficiently perform such tasks as to make it work, and in turn, to play a part in improving productivity.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a work transfer facility for plating equipment, FIG. 2 is a front view of the work transfer equipment, and FIG. 3 is a side view of the work transfer equipment. FIG. 4 is a detailed view of the work fixed position stopping device, and FIGS. 5 to 10 are explanatory views of the work taking-out operation to the first position and the work interval specified position. 1 ... Work transfer conveyor, 14 ... 1st stopper, 17
... Second stopper, 18... Third stopper, 19... First urging means, 20... Second urging means, 21, 22... Cam follower, 23. , E... Second position, F... Work standby position, G... Work interval prescribed position, P... Transfer stop posture, Q.
……work.

Claims (2)

(57) [Claims] A first stopper for positioning a work to be transferred by a conveyor is reciprocally movable from a first position to a second position on the upstream side in the work transfer direction, and is transferred along the work transfer direction. A second stopper for stopping the transfer of the work to be transferred is moved to a work standby position on the upstream side of the second position, and the transfer of the latter is stopped when the transfer stop of the second stopper is released. A third stopper to be swung is provided at a work spacing defining position between the first position and the second position so as to be swingable, respectively, and further, the second stopper is in a transfer stop posture and the third stopper transfer stop release is released. First and second biasing means for biasing and swinging to the posture are provided, and the second stopper is acted on by a cam follower attached to the second and third stoppers. Said cam member for swinging and the third stopper to the transfer stop position to feed stop releasing attitude first
The first and second stoppers are connected to a stopper, so that the first and second stoppers are switched to the transfer stop release posture when the first stopper moves forward to the second position, and the first stopper is returned to the first position. Sometimes a third between the two workpieces
A fixed position stopping device for a workpiece, wherein the third stopper and the second stopper are switched to a transfer stop posture in a state where the stopper is inserted. 2. The fixed position stopping device for a work according to claim 1, wherein the distance between the first stopper and the cam member in the work transfer direction can be changed and set.