JPH0239711Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field A pallet device used in processing equipment automatically carries a workpiece onto a pallet from a conveyance path to a predetermined position in an automatic processing device, and places the pallet and workpiece in the predetermined position. This is a device for fixedly supporting a pallet, and is constructed so that a group of guide pulleys carrying pallets can be raised, lowered and retracted all at once, and the pallet can also be positioned at the same time.

Conventional technology Automatic processing equipment receives and carries in a pallet loaded with workpieces, fixes and supports it in a predetermined position, performs various processing on the workpieces on the pallet, and after processing, takes out the pallet and moves it to the workpiece conveyance path. The workpiece is then replaced. Incidentally, various kinds of loading and supporting means are used to carry and support such pallets to predetermined positions of automatic processing equipment. As for these devices, the applicant has proposed a plurality of sets of arm rods each having a pulley at the tip for supporting both side end surfaces and the bottom edge of the pallet at both the left and right ends of the pallet carry-in support position, each facing toward the lower edge side of both ends of the pallet. The other ends of the arm rods are connected to each other by connecting rods so as to swing in unison, and the lower edge support pulley and the end guide pulley of the pallet are provided at the tip of the arm rod. A means for fixing the pallet in a fixed position by lowering the support pulley and retracting the guide pulley by swinging the tilting arm rod has been developed and separately proposed.

Problems to be Solved by the Invention Incidentally, it is desired that the work pallet be formed as narrow in width as possible for the workpieces, and the width of the receiving and loading/fixing device is also desired to be narrow. Therefore, in the present invention, while complying with the spirit of the invention of the supporting device separately developed by the applicant, the arrangement and positioning drive means can be changed to make it possible to carry out simple means, and the pallet and carrying device can be configured to have a narrow width. This is how it was done.

Means for Solving the Problems That is, the present invention provides rail seats on both the left and right sides along the pallet receiving and carrying direction at the bottom of both sides of the pallet receiving section, and a plurality of sets of arm rods are installed inside the rail seats. Each of the arm rods is tilted and pivotally supported at approximately the center, and a pulley is provided on the tip side of each arm rod to support the inner and bottom surfaces of the leg rails provided on both sides of the lower surface of the pallet, and both rail seats are mounted on the base. A sliding shaft is provided to be slidable along each arm, the other end of each arm rod is engaged with an engaging member provided on the sliding shaft, and the sliding shaft is connected to an operating cylinder provided on the base. It is constructed so that it slides all at once.

Function: Leg rails are attached to both sides of the lower surface of the pallet along the direction of movement, and arm rods with pulleys at their tips that support and guide both inner surfaces and bottom surfaces of the leg rails are placed opposite to the inside of the leg rails. The support pulley is lowered by swinging the arm rods on both sides at the same time by the sliding shaft, the guide pulley is retracted, and the pallet can be fixed and supported in a predetermined position. It is.

Embodiment The present invention will be explained in detail below based on the drawings. The drawing shows a specific example of the implementation of the present invention applied to a turret type machining center, and the present invention can also be applied to other processing equipment. It can be implemented similarly. Further, the present invention is not limited to the illustrated example, and can be implemented in the same manner even if a part of the structure is changed or the shape of the constituent members is changed in accordance with the spirit described above and below.

Fig. 1 (front view) and Fig. 2 (plan view) show a loading support device 1 according to the present invention disposed approximately in the middle of turret-type machining centers 2, 2, which are provided facing each other. The carrying-in support device 1 is fixedly provided and fixedly supports the pallet 3 to be received and carried. On the other hand, machining center 2
are arranged to move back and forth, left and right, respectively, to process a predetermined portion of the workpiece W attached to the pallet 3. The pallet 3 is transferred to the workpiece conveyance path 4.
The transfer rail 5 is fixedly disposed between the transfer device 1 and the transport device 1, and the movement is carried out reciprocally by a swing arm 6a provided on the transfer device 6. Palette 3 used in this invention
Figure 5 (top view) Figure 6 (left side view of Figure 5)
7 (bottom view of FIG. 5). That is, leg rails 3a, 3a are fixed on both sides of the lower surface of the back side of the pallet 3, and abutments 3d, 3d are provided on the outer front and rear sides of the leg rails 3a, 3a, respectively. Then, an engaging part 3d is attached to the rear center part in the carrying direction, and a locking part 3c is protruded from the rear part of the lower surface.
The engaging portion 3d engages with the tip of the swing arm 6a provided on the moving device 6, and the locking portion 3c engages with a protrusion of a restraining device 18, which will be described later, to carry the pallet 3 into a predetermined position and carry it. It is for positioning.

On the other hand, the pallet loading support device 1 is constructed on the upper surface of a base 8 provided in the pallet receiving section, and press support devices 7 that operate independently are provided on the front abutment side and on both left and right sides of the base 8. The device 7 is for pressing and fixing the received pallet and the loaded work W in a predetermined position, and various conventional devices can be used.
The main part of the present invention lies in the configuration of the loading device constructed on the top surface of the base 8, and the figure shows the base 8 fixedly installed almost horizontally.
Depending on the processing means, the present invention can be similarly applied to a structure in which the base 8 is configured to be freely tilted or rotated and held at an appropriate position.

3 (front view) shows the front of the carrying-in support device 1 with the pressing support device 7 removed, with pallets 3 arranged therein, and FIG. 4 (plan view) shows the pallets 3 except for the pallet 3 in FIG. This shows the acceptance status. In these figures, in the present invention, rail seats 9, 9 are fixedly installed on both sides of the upper surface of the base 8 along the pallet carrying direction. The rail seats 9, 9 are each formed with an inclined surface portion 9a on the opposite side, and the angle of this inclined surface is preferably 45 degrees. In addition, a rib-shaped protrusion 9 is provided on the inside of each of the rail seats 9, 9.
b, 9b are integrally formed, and these protrusions 9b, 9b
becomes a bearing portion of a sliding shaft 15, which will be described later. Also,
Steps are formed on the top surfaces of the rail seats 9, 9, and reference sheets 10 are formed on the front and rear sides.
The pallet 3 is supported by the reference sheet 10, and the pallet 3 is configured as a support surface for the reference sheets 10 and 3d. It turns out. In addition, the reference sheet 1 that regulates the horizontal position of the pallet 3 is located in front of and behind the top surface of the left rail seat 9 of the rail seat 9.
0a and 10a are provided, and the reference sheet 10a
The reference sheet 10 is also provided with blowholes for detection similar to those of the reference sheet 10.

On the other hand, a plurality of arm rods 12 are pivotally supported on the inclined surfaces 9a of the rail seats 9, 9 via support shafts 11, respectively, in a symmetrical manner so as to be freely swingable. An installation pulley 13 and a guide pulley 14 are provided.
When the arm rod 12 is held in the position shown in FIG. 4, the support pulley 13 abuts perpendicularly on the bottom surface of the leg rail 3a of the pallet, as shown in FIG. Support and guide pulley 14
are in contact with the respective inner surfaces of the leg rail seats 3a to support and guide the pallet 3 in the horizontal direction. In this state, the positions of these pulley groups are made to coincide with the pulley groups provided on the delivery rail 5, and the pallet 3 received and supported by the support pulleys 13 has its temporary seat 3d aligned with the reference seat of the rail seat 9. The position should be slightly higher than the top surface of 10. The rear end side (lower side) of the arm rod 12 is a sliding shaft 15 which is pivotally supported on the protruding seats 9b, 9b of the rail seat 9.
The arm rods 12 are configured to be engaged with engaging members 15a respectively attached to the arms, and to swing the arm rods 12 all at once by the sliding movement of the sliding shaft 15. On the other hand, the sliding shaft 15 is operated by an actuating cylinder 17 mounted on the base 8 at approximately the center of the rail seats 9, 9, and one end of the rod 17a on the loading side of the actuating cylinder 17 and One end sides of the sliding shafts 15, 15 are connected by a bracket 16. Further, an operating shaft 20 is connected to the opposite side of the rod 17a.
0 activates the arresting device 18 and the pressing device 19.
That is, the restraining device 18 has a clamp piece 18c pivotally supported on a base 8 on which projecting walls 18a, 18a are formed, and the lower part of this clamp piece 18c is formed into a fork 18e. On the other hand, the operating shaft 20 passes through this fork 18e, and the pin 20c implanted in the operating shaft 20 is connected to a long hole 18f formed in the fork 18e.
the clamp piece 18c by the actuating shaft 20.
The protrusion 18d formed on the upper side of the clamp piece 18c collides with the locking part 3c formed on the pallet 3, thereby pressing the pallet 3 against the reference sheet 10 and holding it in the regulation position. ing. Further, the pressing device 19 pivotally supports the L lever 19a on a protruding step formed in a part of the protruding seat 9b, and also supports the L lever 19a.
The long leg side of the lever 19a is engaged with a ring seat 21 loosely fitted to the operating shaft 20, and the short leg side forms a pressing part 19b, which is positioned so as to correspond to the inside of the leg rail 3a of the pallet 3. . And the L lever 19a
A ring seat 21 for operating the actuator is provided via a coil spring 20b between flanges 20a and 20d fixed to the actuating shaft 20, and in the pallet receiving position shown in FIG. upper side)
The L lever 19a is rotated counterclockwise by the collar 20d and is in the open state. Further, the protruding portion 18d of the restraining device 18 presses the pressing portion 3c of the pallet 3.
It is set low so as not to impede the infiltration of water. The apparatus thus constructed operates as described below to fixedly support the receiving pallet 3.

That is, as shown in FIG. 8 (operation explanation and partially cutaway view of FIG. 4 showing the positioning and fixed state of the pallet 3), when the pallet 3 is carried almost to a predetermined position, the operating cylinder 17 is activated and the rod is 17
a. Move the operating shaft 20 forward (downward in the drawing).
Due to this forward movement, the sliding shafts 15, 15 also slide in the same manner, causing the arm rods 12 on both sides to swing as shown by 12'. However, when the arm rod 12 is swung from the raised position, the centers of the support pulley 13 and the guide pulley 14 provided at the tip thereof are arranged perpendicularly or parallel to the rail seat 9, and 12 is inclined at 45 degrees, the support pulley 13 lowers its support position by swinging the arm rod 12, and lowers the pallet so that the stop 3d of the pallet 3 contacts the reference seat 10 of the rail seat 9. . In addition, the guide pulley 14
The pallet 3 is also retracted inwardly and downwardly from the guide position to receive and support the pallet 3 on the reference sheet 10 so as to be movable back and forth and left and right. Further, as the operating shaft 20 moves forward, the ring seat 21 is moved forward by the coil spring 20b via the collar 20a, and the L lever 19a is rotated clockwise to bring the pressing part 19b into contact with the inside of the pallet leg rail 3a. Then, the pallet 3 is brought into pressure contact with the left reference sheet 10a via the contact seat 3d, and positioned at the specified left and right positions. This pressing force is determined by the repulsive force of the coil spring 20b. In addition, the pallet 3 is loosely pressed against the reference sheet 1 by the pressing part 19b.
0a, the locking device 18 is simultaneously pushed through the actuating shaft 20 by the continued advancement of the rod 17a.
The protrusion 18d provided on the pallet 3 is made to protrude upward, collides with the pressing portion 3c of the pallet 3, presses the pallet against the reference sheet 10, and positions the pallet at a specified position. At that position, the repulsive force of the coil spring 20b is maximum, and the pallet 3 is strongly pushed against the reference sheet 10a.
to clamp. Note that the pressing force when the pallet 3 is first pressed loosely against the left reference sheet 10a by the L lever 19a is the same as that of the restraining device 1.
The protrusions 18 of 8 allow the pallet 3 to move in the carrying direction when positioning the pallet 3. The positioned pallet 3 is further fixedly held downward by the pressing support device 7,
When the machining is completed, the operating cylinder 17 operates in the opposite direction to move the sliding shaft 15 backward, thereby bringing the arm rod 12 into the state shown in FIG. 18 as well as the pressing device 19 are opened to enable removal of the pallet.

Effects Since the pallet loading support device of the present invention is constructed in this way, it is possible to move the support pulley and guide pulley group forward and backward in the vertical and horizontal directions all at once with one driving means, and the loading support device can be configured by the width of the pallet. can do. In addition, it is easy to receive and take out pallets, and the pallets can be positioned and clamped horizontally at the same time as the guide pulley is retracted, and the pallets can be positioned and held in a short time.
Machining efficiency can be improved.

[Brief explanation of drawings]

Figure 1 is a front view of a machining center using the present invention, Figure 2 is a plan view of Figure 1, Figure 3 is a front view of the device of the present invention, and Figure 4 is a partially removed plan view of Figure 3. Figures 5, 6, and 7 are a plan view, side view, and back view of the pallet used in the present invention; Figure 8 is a partially cutaway view explaining the operation of Figure 4;
The figure is a sectional view taken along the line A-A in FIG. DESCRIPTION OF SYMBOLS 1... Carrying-in support device of the present invention, 2... Machining center, 3... Pallet, 4... Conveyance path, 5...
...Delivery rail, 6...Movement device, 7...Press support device, 8...Base, 9...Rail seat, 10...
...Reference sheet, 11...Pivot shaft, 12...Arm, 1
3... Support pulley, 14... Guide pulley, 15... Sliding shaft, 15a... Engaging member, 16... Bracket, 17... Operating cylinder, 18... Retaining device, 19... Pressing device, 20... Operating axis, 21...
...Kanza.

Claims (1)

[Scope of utility model registration request] A device that supports and fixes a workpiece received on a pallet from a conveyance path at a predetermined position on a base,
Rail seats are provided on both left and right sides along the pallet receiving and carrying direction on the upper part of the base, and inside each of the rail seats, a plurality of sets of arm rods are tilted and pivotally supported at approximately the center thereof, and each A pulley is provided on the tip side of the arm rod to support and guide the inner surface and bottom surface of the leg rails provided on both sides of the lower surface of the pallet, and sliding shafts are provided on the base so as to be slidable along both rail seats. The other end of each arm rod is engaged with an engaging member provided on the sliding shaft, and both sliding shafts are slid at the same time by an actuating cylinder provided on the base, so that the arm rods are moved simultaneously. 1. A pallet loading support device, characterized in that it is configured to lower and support a received pallet at a predetermined position by swinging the pallet to a predetermined position.