JPS6035575Y2 - Pallet positioning clamp device in transfer machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet positioning and tightening device at each station of a transfer machine.

In conventional transfer machines, the pallet positioning and clamping operations provided at each station are
This was done in conjunction with the action of actuators installed at each station.

Therefore, since the pallet was transported using an electrical signal for each operation that confirmed the completion of processing at the station with the slowest processing time on the transfer line, there were problems in terms of reliability and economy. was there.

The present invention was developed in view of these problems, and uses a single actuator to perform a series of operations such as positioning pallets at all stations, clamping, and lifting up transfer pars, and transmits high-speed and reliable operations. This is an economical and efficient device with improved reliability and strong pallet clamping force.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a plan view of a processing station of a conveyance path of a transfer line.

Two rectangular rails 2a and 2b of a pallet P conveyance path are fixed in horizontal parallel on the base 1 of each station.

Rectangular transfer pars 3a and 3b are provided in parallel inside the rails 2a and 2b, and one end of each transfer par 3a and 3b is connected to an actuator (not shown) so that they can move forward and backward. ing.

Further, in the center of the conveyance path, a working rod 4 inserted into a guide bush G in the base 1 is provided so as to be slidable in parallel with the transfer pars 3a, 3b, and one end of the working rod 4 is connected to an actuator (not shown).

As shown in FIG. 1, a trapezoidal third converting member (hereinafter referred to as an opening/closing plate 6) having wedge-shaped grooves 5a and 5b symmetrically carved is fixed to the upper surface of the operating rod 4.

Next, in FIG. 2, a through hole 7 is bored in the side wall of the base 1 in a direction perpendicular to the moving direction of the working rod 4 and parallel to the floor surface.

A guide bushing 8 is inserted into the through hole 7.

A sliding rod 9 is slidably inserted into the guide bush 8.

A roller 1 is provided in a deep groove 10 cut into one end of the sliding rod 9.
1 is inserted, and the roller 11 is supported by a shaft 13 inserted into a through hole 12 that crosses the deep groove 10 at right angles.

Furthermore, a pin 14 is fixed to a protrusion at one end of the sliding rod 9 so as to engage with the groove 5a of the opening/closing plate 6.

Further, the pin 14 of the roller 11 is regulated along the guide path of i5a, and is in contact with the outside of the opening/closing plate 6.

A piston R' is fitted into the inside of the sliding rod 9 so as to be movable forward and backward by hydraulic operation in the same direction as the moving direction of the sliding rod 9.

Further, a piston rod R is fixed to the piston R', and one end of the piston rod R protrudes to the outside of the sliding rod 9 (FIG. 2). A shaft 15a is provided on the side surface at right angles to the sliding rod 9, and a clamp lever 16a is swingably supported on the shaft 15a.

Further, the lower end protrusion of the clamp lever 16a is in contact with the tip of the piston rod R.

A pin 17a is provided at the upper end of the clamp lever 16a to protrude toward the upper surface of the pallet P.

(FIG. 2) The above-described structure for transmitting the movement of the working rod 4 to the clamp lever 16a is symmetrical with respect to the working rod 4.

Further, as shown in FIG. 4, positioning pins 19 and 20 are provided for each station on the upper part of the working rod 4 provided at the center of the transfer path.

Furthermore, the base 1 holding the working rod 4 is bored with vertical holes 21, 22 therethrough.

Inside each of the through holes 21.22 is a guide bushing 23.24.
are inserted into the guide bushes 23 and 24, and positioning pins 19 and 20 are inserted into the guide bushes 23 and 24 so as to be movable up and down.

A deep groove 25 opening downward is cut into the lower end of the positioning pin 19, 20, and a roller 26 is inserted into the groove 25.

Furthermore, the roller 26 is supported by a pin 28 inserted into a through hole 27 that crosses the groove 25 at right angles.

The protrusion at the lower end of the positioning pin 19 is provided with the action rod 4.
A guide pin 29 is fixed by engaging with a guide groove 31 in a side notch.

Further, the pin 29 of the roller 26 is regulated along the guide path of the groove 31, and is in contact with the upper surface of a second converting member (hereinafter referred to as a cam 30) formed on the working rod 4.

(FIGS. 3 and 4) On the other hand, a bracket B is fixed to the wall surface of the base 1 that crosses the pallet P conveyance path of the base 1 at right angles at each station.

(FIG. 5) Further, a shaft 32 is rotatably supported on the bracket B at right angles to the pallet transport path.

Further, one end of a lever 33 is swingably supported at both ends of the shaft 32, and a shaft 34 is supported at the other end in parallel with the shaft 32 via a bush 35.

A roller 36 is rotatably supported at the center of the shaft 34, and both ends of the roller 36 are regulated by spacers 37 and 38.

Further, flange rollers 39 and 40 are supported on both ends of the shaft 34, and the flange rollers 39 and 40 support two transfer pars 3a and 3b.

On the other hand, a first converting member (hereinafter referred to as cam member 41) is fixed on the working rod 4 located directly below the roller 36,
The roller 36 is movable on the shaft 3 on the cam member 41.
It is supported by 4.

The above is an explanatory diagram of the configuration of the present invention, and its operation will be described next.

That is, in FIG. 1, by the action of an actuator (not shown) connected to one end of the transfer pars 3a, 3b on the rails 2a, 2b, the pallet P moves onto the protrusion T1. on the transfer pars 3a, 3b. It is stopped by T2 and slidably conveyed to a predetermined position.

Next, the action rod 4 is moved forward in the direction of the arrow by the action of an actuator (not shown).

With the forward movement of the working rod 4, the opening/closing plate 6 fixed on the working rod 4 also moves forward, and the rollers 11, 11' in contact with the outer periphery of the opening/closing plate follow the outer periphery of the opening/closing plate. It moves in a direction away from the working rod 4.

(Fig. 1) That is, as shown in Fig. 2, the sliding rods 9 and 9', which are symmetrically provided on both sides of the conveyance path, move toward the outside of the circumference of the base 1 when the opening/closing plate 6 moves forward. move in the direction.

Therefore, the movement of the sliding rods 9, 9' causes the clamp lever to move.
The lower ends of 16a and 16b are pressed by the tip of the piston rod R, and clamp levers 16a are provided on both sides of the conveyance path.
, 16b is the shaft 15a.

The pallet P is moved around the rails 2a and 2b by swinging around 15b.
Clamp it in between.

At this time, the clamping force of the clamp levers 16a, 16b is further increased by the action of the actuators provided in the sliding rods 9, 9', and the pallet P is firmly clamped.

Further, as shown in FIG. 4, when the working rod 4 moves forward (in the direction of the arrow), the positioning pins 19, 20 move up via the roller 26, following the cam 30 provided on the working rod 4.

That is, the positioning pins 19 and 20 are raised simultaneously with or slightly before the clamping operation of the clamp levers 16a and 16b, and are respectively inserted into the reference holes at the bottom of the pallet P.

Further, as shown in FIG. 6, by moving the working rod 4 in the direction of the arrow, the lever 3 moves along the shape of the cam 41 on the working rod 4.
3 swings downward around a shaft 32 via a roller 36.

Therefore, the flange roller 39 supported by the lever 33,
The transfer pars 3a, 3b supported by 40 descend following the flange rollers.

By lowering the transfer pars 3a and 3b, the pallet P
the bottom surface and the transfer par 3a.

3b protrusion T1. T2 locks are released all at once.

In a state in which the lock with the pallet P is released, the transfer par 3at3b returns to its original position by the action of the actuator.

Subsequently, when the processing of the workpiece placed on the pallet P is completed, the working rod 4 is simultaneously moved back in the opposite direction to the arrow shown in the figure by the action of the actuator.

Due to the action of the operating rod 4, the clamp levers 16a, 16b are swung around the shafts 15a, 15b through the pin 14 engaged with the groove 5at5b of the opening/closing plate 6. Release the clamp on pallet P.

At this time, the piston rod 14 is retracted by the action of the actuator in the sliding rod 9.

Further, the pallet P positioning pins 19, 20 are lowered by the guide of the pin 29 engaged with the groove 31 on the side surface of the working rod 4 by the backward movement of the working rod 4, and are separated from the pallet P.

(FIGS. 3 and 4) Next, as shown in FIG. 6, when the working rod 4 moves in the opposite direction to the arrow to convey the pallet P, the roller 36 on the cam 41 rolls and the cam 41 Rise along the slope.

Therefore, the lever 33 swings around the shaft 32 and pushes up the transfer pars 3a, 3b via rollers with pots supported on both sides of the shaft 34.

As the transfer pars 3a, 3b rise, the protrusions T1-T2 on the transfer pars 3a, 3b engage with the pallet P again.

Subsequently, the pallet P is transported to the next station by the action of an actuator provided at one end of the transfer bar.

That is, by using the device of the present invention as described above, a series of operations such as clamping and unclamping the pallet P, moving the positioning pin in and out, and moving the transfer bar up and down can be mechanically communicated by the action of one actuator. By doing so, it is possible to obtain high speed, certainty, and reliability.

Furthermore, in the mechanical communication system between the working rod and the clamp lever,
By providing an actuator, it is possible to increase the clamping force, maintain the balance of the clamping force, eliminate occurrence of chatter, etc., and improve accuracy.

As stated above, the present invention is not limited to the configuration shown in the embodiments, and modifications are expected without departing from the technical idea of the present invention as described in the claims. .

[Brief explanation of the drawing]

Fig. 1 is a plan view of the processing station of the transfer cam conveyance path, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig.
The figure is a sectional view taken along the line B-B in FIG. 1, FIG. 4 is a sectional view taken along the line C-C in FIG. 3, FIG. It is a DD sectional view. In the figure, 1...Base, 2a, 2b.
...Rail, 3a, 3b...Transfer bar, 4...Working rod, 9...Sliding rod, 16a, 16b...Clamp lever -119
, 20... Positioning pin, 30... Cam, 36... Roller, 39, 40...
Roller with flange, 41...Cam member, P...
...Pallet, R...Piston rod, P'.
...Piston, B...Bracket, T1
．． T2...protrusion.

Claims (1)

[Scope of utility model registration request] In a transfer machine that sequentially transfers and processes workpieces placed on pallets between a plurality of stations, a transfer path that connects each station is communicated, and a transfer bar that transfers the pallet and the transfer bar are driven back and forth. a driving part; a supporting member that supports the transfer bar in the vertical direction; an operating rod that is slidably supported on a fixed part of the transfer machine in parallel with the transfer bar; and a driving part that moves the working rod forward and backward. , a first converting member provided in a cam shape on the working rod to move the transfer bar up and down via the support member, and a vertical sliding member on a fixed part of the transfer machine to position the pallet. a movably supported positioning pin; and a second movable positioning pin provided on the working rod that moves and converts the positioning pin in the vertical direction by the operation of the working rod.
a converting member, a sliding rod supported on a fixed part of the transfer machine so as to be slidable in a direction orthogonal to the operating direction of the operating rod in a horizontal plane, and a converting member provided on the operating rod to actuate the sliding rod. A third converting member that moves and converts in a direction perpendicular to the operating direction in a horizontal plane due to the operation of the rod, and a third converting member that applies pressure in a direction parallel to the sliding direction of the sliding rod inserted in the sliding rod. a pressure increase cylinder provided therein; a pressure increase piston rod that is slidably inserted into the pressure increase cylinder and moves in a direction parallel to the sliding direction of the sliding rod by the pressure of the pressure increase cylinder; and the pressure increase cylinder. The clamp lever engages with the tip of the piston rod and clamps the positioned pallet, and the movement of the working rod is converted by the means described above, so that the pallet positioning clamp and the vertical movement of the transfer bar are combined into one movement. A pallet positioning and clamping device for a transfer machine, which is characterized by using a drive unit and simultaneously increasing clamping force.