JPH01225702A - Apparatus for transferring work - Google Patents

Abstract

PURPOSE:To increase the degree of freedom of layout and to minimize the area required to install the title apparatus by independently operating a unit for feeding a sintered work to a leveling press and a unit for releasing the work from the press. CONSTITUTION:The apparatus is composed essentially of a unit 10 for taking in a work 2 transferred from the preceding stage through a line, a unit 11 for correcting the posture of the work 2, a unit 12 for feeding oil to the work 2, a unit 13 for setting the work 2 and a unit 14 for releasing the work 2. The unit 11 corrects the posture of the work 2 taken in by the unit 10 so that the work 2 can be engaged with the dies of a leveling press 9. The unit 13 is placed so that it is freely moved back and forth between the work 2 releasing position P5 of the unit 11 and the working position P6 of the press 9, and the work 2 corrected by the unit 11 is set in the dies of the press 9 by the unit 13. The unit 14 releases the leveled work 2 from the working position P6 of the press 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a workpiece conveying device for supplying and discharging a sintered workpiece to and from a straightening press device in a powder metallurgy method.

[Prior art] The powder metallurgy method is known as a manufacturing method used to manufacture mechanical parts that require wear resistance, such as the rotor of a trochoid pump or the rocker arm of an automobile engine. The raw material is a mixture of metal powders such as copper powder and copper powder in a predetermined ratio.This raw material is compression molded, and then,
Generally, the steps involved are sintering, straightening press, heat treatment, and machining to finish the product.

In the above process, the straightening press is installed to straighten the shape of the workpiece that has changed due to sintering. A workpiece is sandwiched between molds, and a pressure of 5,000 to 8,000 kg/cm'' is applied using a hydraulic or mechanical press to correct the shape of the workpiece.

By the way, in the equipment that performs the above-mentioned straightening press processing, a workpiece conveyance device that supplies the workpiece to the straightening press device and discharges the pressed workpiece is generally installed together with the straightening press device. As such a workpiece conveyance device, a workpiece conveyance device that carries in and out of the workpiece at the same position is widely used in order to make the loading and unloading work of the workpiece more efficient.
An example will be explained with reference to diagram O.

As shown in Figure 9, the workpiece conveyance device! is provided between the conveyance line 3 through which the workpiece 2 after sintering is sent and the straightening press device 4, and includes a disk-shaped conveyance table (hereinafter abbreviated as the table) 5 and this table 5. It is also protected from the holder 6, which is arranged with equal width on the outer periphery of the holder 6. The table 5 is provided to transport the workpiece 2, and is movable in the direction of arrow Y1 about the shaft 5a. On the other hand, the holder 6 has a hollow cylindrical shape as shown in FIG. 10, and its inner diameter is formed to have the same dimension as the outer diameter of the workpiece 2 so that the workpiece 2 can be held therein. Further, in the inner peripheral portion 6a, a recess 6b is formed to be engaged with a convex portion 2a on the outer periphery of the work 2, in order to prevent the work 2 from being displaced during transportation.

In the work transport device 1 configured in this way, the work receiver is moved to the holder 6 which is sequentially delivered to the transfer position P1 by the rotation of the table 5, and the work 2 is oriented so as to be engaged with a mold (not shown) of the straightening press device 4. They are fitted one after another with a deviation of 180 degrees from each other. At this time, the workpiece 2 is supplied with lubricating oil for straightening press. And arrow Y on table 5! The orientation of the workpiece 2 sent by rotation in the force direction completely matches the mold when it reaches the processing position P2 of the straightening press device 4, and is detached from the holder 6 by the operation of the straightening press device 4 and fitted into the mold. It is pressed.

The workpiece 2 after pressing is fitted into the holder 6 again by the operation of the straightening press device 4, and the workpiece 2 is fitted into the holder 6 by the operation of the straightening press device 4, and the workpiece 2 is fitted in the holder 6 by the arrow Y! on the table 5.
As the workpiece holder rotates in the force direction, it is returned to the transfer position PI and removed from the holder 6, and a new workpiece 2 is fitted into the holder 6 from which the workpiece 2 was removed. It will be sent to 4. Note that the convex portion 2a of the workpiece 2 is scraped off in the cutting process after the straightening press.

In the above-mentioned workpiece conveyance device 1, when the shape of the workpiece 2 sent from the conveyance line 3 changes, this can be dealt with by replacing each holder 6.

[Problems to be Solved by the Invention] By the way, the conventional workpiece conveyance device I described above had the following drawbacks.

In other words, when constructing a workpiece conveyance line that connects multiple processes, considering the degree of freedom in the layout of processing equipment, etc. in each process, the workpiece conveyance line! It is also preferable that the conveyance direction of the workpiece 2 be more flexible. However, in the conventional workpiece conveying device 1, the workpiece 2 is always carried in and taken out at the same position, which is a major obstacle when changing the direction of conveyance of the workpiece 2. In particular, when conveying the workpiece 2 in one direction, the workpiece 2 moves in a loop only around the straightening press device 4, resulting in wasted installation space. This becomes an even bigger problem when attempting to install an unmanned transport line to promote labor savings in the entire process, and a solution to this problem is strongly desired.

In addition, since the table 5 is circular, it requires a large installation area, and in particular, when increasing the speed of press processing, the number of holders 6 to be installed on the table must be adjusted to match the timing of transferring workpieces to and from the press machine. In some cases, it became necessary to increase the size of the table, causing the table to become even larger, thereby increasing the installation area without limit.

The present invention was made against this background, and an object of the present invention is to provide a workpiece conveyance device that has a high degree of freedom in layout in the workpiece conveyance direction and requires a small installation area.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a workpiece taking-in device that takes in a workpiece conveyed from a previous process to a line, and a posture of the workpiece taken in by the workpiece taking-in device. A posture correcting device for correcting the workpiece to a state capable of engaging with a mold of the correcting press device, a lubrication device for lubricating the workpiece, and a reciprocating device provided between the workpiece unloading position of the posture correcting device and the processing position of the correcting press device. A workpiece setting device sets the workpiece whose posture has been corrected by the posture correction device into a mold of the correction press device, and a workpiece removal device removes the workpiece after the correction press from the processing position of the correction press device. A transport device was constructed.

U effect] According to the above configuration, the workpieces to be transported on the line after sintering are set in the mold of the straightening press device, and the various operations necessary for removing them are performed independently by each device, so that the workpiece transportation is It is easy to change the direction, and the installation area can be minimized by arranging each device in a shape suitable for the straightening press device and the transportation form of the pre- and post-processes.

[Example] The present invention will be described in detail below with reference to FIGS. 1 to 8.

As shown in FIG. 1, the workpiece conveyance device 7 of this embodiment is
a workpiece loading device 0 installed between a conveyance line 8 through which the workpiece 2 after sintering is conveyed and the correction press device 9, and which takes in the workpiece 2 conveyed to the workpiece loading position P3 by the conveyance line 8; a posture correction device 11 that corrects the posture of the workpiece 2 taken into the posture correction position P4 by the workpiece pickup device to a state in which it can be engaged with a mold (not shown) of the correction press device 9;
a refueling device 12 for refueling, a workpiece unloading position P5 of the posture correcting device 11, and a processing position P of the straightening press device 9.
6, and a workpiece setting device 3 that sets the workpiece 2 in a mold (not shown) of the straightening press device 9; and a workpiece removing device that removes the workpiece 2 after straightening press from the processing position P6. It consists of I4.

The workpiece loading device 10 includes a transport device main body 15? The attached base 1G and the rod 16 of this base 16
A left-right moving table 17 slidably installed on a, and this left-right moving table 17
It is equipped with a vertically movable table 18 slidably installed on a rod 17a (see FIG. 2), and a workpiece intake member I9 supported by this vertically movable table 18, and as shown in FIG. The movable table 17 and the vertically movable table 18 can be moved left and right (in the direction of arrow Y2) and up and down (in the direction of arrow 3), respectively, by compressed air supplied from an air supply source (not shown). And, as shown in Figure 1, there is a Moeki work-taking member! Reference numeral 9 is arranged so that it can be moved across the workpiece loading position P3 as the horizontal moving table 17 (H) moves, and is aligned with the workpiece 2 placed on the transport line 8 as the vertical moving table 18 moves. The workpieces 2 at the workpiece take-in position P3 are taken into the posture correction position P4 by the movement of each of the movable tables 17 and 18.

Further, the workpiece taking-in member 19 has a shaft portion 19a thereof.
is slidably supported by the vertically movable table 18, and
For reasons described later, the spring 20 is always biased in the right direction I.

Said posture correction device! 1 consists of a workpiece holding member 21, a posture correction f122, and a workpiece unloading section 23. As shown in FIG. 2, the workpiece holding member 2! is provided to face the workpiece taking-in member 19, is driven in the left-right direction (in the direction of arrow Y4) by an air ring 24 provided inside the transport device main body 15, and is biased rightward by the spring 20. Workpiece intake member 1
The workpiece 2 is sandwiched and held in cooperation with the workpiece 9.

Further, as shown in FIG. 1, the posture correction section 22 is for correcting the posture of the workpiece 2 held at the posture correction position P4 to a state in which it can be engaged with a mold (not shown) of the correction press device 9. It is. That is, the workpiece 2 transferred from the conveyance line 8 is generally transferred with its posture being uneven, so even if it is attempted to set the workpiece 2 in the mold of the straightening press device 9 in this state, the workpiece 2 will not be properly aligned. It cannot be set because the shape and direction of the mold do not match. Therefore, before setting the workpiece 2 in the correction press device 9, it is necessary to align the posture of the workpiece 2 in a certain direction.

The posture correction section 22 is provided for the above-mentioned reason, and as shown in FIG.
The movable base 27 is attached via a linear guide bearing 26 to a pedestal 25 provided on the base (see figure), and a spindle 28 is rotatably supported at the tip 27a of the movable base 27. . An air cylinder 25a is provided on the pedestal 25 to move the movable table 27 in the vertical direction. Further, the spindle 28 is arranged coaxially with the workpiece 2 held at the posture correction position P4, and a driven pulley 29 is attached to its upper end. The driven pulley 29 is connected by a belt 32 to a driving pulley 31 which is driven by a motor 30 attached to the movable table 27, so that the spindle 28 is rotationally driven by the motor 30. And, Su...
A large diameter portion 28a is provided at the bottom of the spindle 28, and a shaft 33 is attached to the large diameter portion 28a so that the adapter can be rotated together with the spindle 28 and movable in the vertical direction (direction of arrow Y5). It is being

To attach the adapter, the shaft 33 is always urged downward by a spring (not shown) provided inside the large diameter portion 28, and a cylindrical adapter 35 is integrally attached to the outer periphery of the upper end with a set screw 34. is rotatably attached to. The lower end surface 35a of the adapter 35 is connected to the workpiece 2.
The movable base 27 is formed in a shape that can be engaged with the upper surface shape, and therefore, the movable base 27 is rotated by the air cylinder 25a while the spindle 28 is rotated by the motor 30.
When the adapter 35 is moved downward, the adapter 35 is pressed against the upper surface of the workpiece 2, and the adapter mounting shaft 33 is displaced upward, so that the adapter 35 is moved to the workpiece receiving member 19.
and slides on the upper surface of the workpiece 2 held by the workpiece holding member 21 (see FIG. 2), and as the spindle 28 rotates,
When the orientation of the lower end surface 35a of the adapter 35 matches the orientation of the upper surface of the workpiece 2, the shaft 33 is displaced downward, the adapter 35 is engaged with the workpiece 2, and the workpiece 2 overcomes the aforementioned gripping force. be rotated. - On the other hand, a positioning pin 36 is fitted to the lower end of the driven pulley 29,
Further, a positioning disk 37 having a positioning groove 37a is attached below the positioning disk 37 so as to be rotatable integrally with the spindle 28. An air cylinder 38 is attached to the movable base 27, and the rotation of the spindle 28 is always stopped at the same position by a stop member 39 and a fixing member 40 connected to the air cylinder 38, and the posture of the workpiece 2 is corrected. It has become so. That is, as shown in FIG. 4, the stop member 39 is driven by a connecting plate 41 attached to the rod 38a of the air cylinder 38 to be rotatable around a pin 42, and a stop member 39 is formed at an intermediate portion thereof. The notch 39a is engaged with the positioning pin 36 to stop the spindle 28 at the normal position. As shown in FIG. 5, the fixing member 40 is rotatably provided around a pin 44 by being driven by a coupling member 43 fixed to the coupling plate 41, and has a protrusion formed at an intermediate portion thereof. 40a in the positioning groove 37 a of the positioning disk 37 1. : The rotation of the spindle 28 is fixed by fitting together. Therefore, as shown in FIG. 3, the workpiece 2 that is engaged with the adapter 35 and rotated in the posture correction unit 1WP4 is stopped by the positioning value of the spindle 28 and the adapter 35 due to the operation of the workpiece stopping member 39 and the fixing member 40. The lower end surface 35 of the adapter 35 is always stopped in a fixed direction due to the
Since the direction of a is matched with the direction of the die of the straightening press device 9 (see Fig. 1) and the direction change of the workpiece 2 after passing through the posture correction section 22, the workpiece The posture of 2 is corrected to a state where it can engage with the mold.

As shown in FIG. 1, the workpiece unloading section 23 is for transporting the workpiece 2 whose posture has been corrected by the posture correcting section 22 to the unloading position P5. As shown in FIG. 6, the device comprises a mechanism 45 and a rotation mechanism 46 provided inside the transport device main body I5 as shown in FIG.
The air cylinder is equipped with a pair of gripping claws 47 and 48 formed in a shape capable of engaging with the outer periphery of the workpiece 2, and a driving plate 49 and a driven plate 50 to which these gripping claws 47 and 48 are attached. Drive plate 49 driven by 45a
As shown in FIG. 7, the operation of
The gripping claws 47 and 48 shown in FIG. 6 are moved closer to each other and separated from each other, so that the workpiece 2 is gripped.

The shape of each of the gripping claws 47 and 48 is formed to be able to engage with a large-diameter workpiece 2b or a small-diameter workpiece 2C. This shows that the pawls 47, 48 are to be replaced. On the other hand, as shown in FIG.
6 includes a drive gear 56 meshed with a gear 55 attached to a sleeve 54 provided integrally with the gripping mechanism 45, and a rotary actuator that rotates this drive gear 56, as shown in FIG. The gripping mechanism 4
5 in the direction of arrow Y6, the gripping claws 47, 48 are reciprocated between the posture correction position P4 and the workpiece unloading position P5.

Further, as shown in FIG. 1, the oil supply device I2 includes a oil supply nozzle 58 attached to the conveyance device main body 15 and an oil supply source (not shown), and supplies the lubricating oil sent from the oil supply source to the The oil is ejected from a small hole (not shown) formed in the lower part of the nozzle 58 to supply oil to the entire surface of the workpiece 2 passing below the oil supply nozzle 58. Note that the lubricating oil spouted from the oil supply nozzle 58 passes through a hole (not shown) provided on the upper surface of the conveyor body 15, is guided into the conveyor body 15, and is collected in the oil pan 15a as shown in FIG. The oil is then returned to the oil supply source through the collection port 15b at the lower end.

Then, as shown in FIG. 1, the work setting device 1
3 is a linear pulse smoke 59 having a rail 59a extending from the conveyance device main body 15 to the straightening press device 9, a vertical movement mechanism 60 supported by this linear pulse motor 59, and a vertical movement mechanism 60 supported by this vertical movement mechanism 60. The air chuck 6I is moved by the linear pulse motor 59 between the unloading position P5 and the processing position P6. As shown in FIG. 8, the linear pulse smoke 59 moves the vertical moving machine groove 60 and the air chuck 61 in the left-right direction (in the direction perpendicular to the paper surface in the figure) by the operation of the slider 59b slidably installed on the rail 59a. It is designed to be moved. Further, the vertical movement mechanism 60 is configured by attaching a movable base 64 to a pedestal 62 fixed on the slider 59b via a linear guide bearing 63. up and down direction (direction of arrow Y7) using the adjustment screw 65.
It is moved to approximately the same position.

An air cylinder 66 is attached to the movable base 64, and the air chuck 61 is moved in the vertical direction by the operation of the air cylinder 66.

Moreover, the air chuck 61 has a plurality of claws 6 driven by compressed air! a (only one is shown in the figure), and after fitting the reference shaft 61b into the center hole 2d of the workpiece 2, the workpiece 2 is gripped by pressing the outer circumference of the workpiece 2 inward in the radial direction with the claws 61a. ing. Note that this air chuck 61 may have a claw 61a depending on the shape of the workpiece 2.
The workpiece 2 may be gripped by the radially outward movement of the gripper.

Moreover, as shown in FIG. 1, the workpiece removal device! 4 is
It is composed of a work extrusion section 67 attached to the work setting device 13 and an oil film cutting section 68 attached to the upper surface of the straightening press device 9. The work extrusion section 67 is connected to the pedestal 62 of the work setting device 13.
A work pushing member 71 is supported to be movable in the left and right direction (direction of arrow Y8) by two linear guides 69.70 attached to the linear guide 69.70. The workpiece setting device is equipped with an air cylinder 72 for moving the workpiece in the direction (see Fig. 8). The workpiece 2 is pushed out of the mold of the straightening press device 9 by the workpiece pushing member 71 that is moved across the processing position P6 with the operation of step 3, and the workpiece 2 is placed on the right side of the straightening press device 9 by the operation of the air cylinder 72. The receiver is then transferred to a conveyance line for the next process (not shown). The work pushing member 72 is also driven in the vertical direction (direction of arrow Y9) by an air cylinder 73 supported by the linear guide 69, 70 and the air cylinder 72, as shown in FIG. There is. Further, as shown in FIG. 1, the oil film cutting section 68 is for assisting the workpiece ejecting operation of the workpiece pushing section 67. In other words, the workpiece 2 after straightening press is
The workpiece 2 may be strongly adsorbed by the oil film formed between the mold and the workpiece 2, and the workpiece 2 may not be removed by the removal force of the Moeki workpiece pushing member 71, that is, the drive torque of the linear pulse motor 59 alone. . The oil film cutting portion 68 is provided for this reason, and the oil film cutting member 75 driven in the direction of the arrow YIO by the air cylinder 74 presses the workpiece 2 to cut the oil film.

Therefore, in the workpiece conveyance device having the above configuration, the workpieces 2 are conveyed in the order described below.

First, as shown in FIG. 1, when the workpiece 2 after sintering is conveyed to the workpiece loading position P3 by the conveyance line 8, the workpiece 2 is moved by the movement of the left and right moving table 17 and the vertically moving table 1g of the workpiece loading device 10. The take-in member I9 is moved downward and to the right, and by this action the work 2 is taken into the posture correction position P4. Then, the workpiece holding member 21 of the posture correction device 11 is moved to the left by the air cylinder 24 shown in FIG. is energized and held.

When the workpiece 2 is held at the posture correction position P4, the spindle 28 of the posture correction section 22 shown in FIG.
, and is rotated against the gripping force of the workpiece taking-in member 19 and the workpiece holding member 21. and,
Thereafter, the spindle 28 is stopped at the normal position by the operation of the stop member 39 and the fixing member 40, and the posture of the workpiece 2 is corrected to be deviated by 180 degrees from the direction of the mold of the correction press device 9.

When the posture correction is completed, the spindle 28 is raised, and the workpiece taking-in member 19 and workpiece holding member 21 shown in FIG. 1 are separated from each other to release the workpiece 2. At this time, the workpiece capturing member 21 is moved to the left end position and the upper end position within its movement range in preparation for capturing the next workpiece 2. Then, the first
The gripping mechanism 45 (not shown) is rotated to the posture correction position P4, and then the gripping claws 47 and 48 are moved closer to grip the workpiece 2. Then, the gripping mechanism 45 is rotated in the direction of arrow Y6 by the rotation mechanism 4G, and by this operation, the workpiece 2 is oiled by the oil supply nozzle 58, and is then reversed by 180 degrees and transported to the workpiece transporting position P5.

When the workpiece 2 is transported to the workpiece transporting position P5, the gripping claws 47 and 48 of the gripping mechanism 45 are separated to release the workpiece 2, and the air chuck 6! is moved to the workpiece unloading position P by the linear pulse smoke 59 of the workpiece setting device 13.
Can be moved up to 5.

Then, the air chuck 62 is lowered to the vicinity of the workpiece 2 by the air cylinder 66 with its claws 61b open, and then the claws 61b are closed and the workpiece 2 is gripped (see FIG. 8).

As shown in FIG. 8, when the workpiece 2 is gripped by the air chuck 61, the air chuck 6I is moved by the air cylinder 6.
6, and is moved above the processing position P6 of the straightening press device 9 by the operation of the linear pulse motor 59, as shown in FIG. Thereafter, the air chuck 61 is lowered to release the grip on the workpiece 2, and as a result, the workpiece 2 is set in the mold of the straightening press device 9. When the setting of the workpiece 2 is completed, the air chuck 61 is raised again and then moved to the standby position P7 by the linear pulse motor 59. At this time, the work pushing member 7I of the work removing device 14 is raised by the air cylinder 73 as shown by the two-dot chain line in FIG. It is moved to the left side of the work 2, straddling the work 2 set in the mold. And Air Chuck 6! is the standby position P7
When the workpiece 2 is moved to this point, the workpiece 2 is subjected to straightening press processing by the straightening press device 9.

The workpiece 2 that has been corrected by the above-mentioned procedure is
Along with the new workpiece 2 setting operation of the workpiece setting device 13, the workpiece removal device! 4, it is removed to the next process transport line.

That is, the new workpiece 2 transported to the workpiece take-in position P3 is transported to the workpiece discharge position P5 in the same manner as the above procedure during the corrective press processing. When the straightening press is finished, the oil film cutting member 75 of the workpiece removal device 14
is reciprocated in the direction of arrow YlO to cut the oil film formed between the mold of the straightening press device 9 and the workpiece 2, and the air chuck 61 is kept on standby at the standby position P7.
is moved to the workpiece unloading position P5 again, a new workpiece 2 is gripped, and at the same time, the workpiece pushing member 7! is lowered by an air cylinder 73 (see FIG. 2). Then, when the air chuck 61 is moved to the processing position P6 in order to set the new work 2 in the mold,
With this movement, the workpiece pushing member 71 moves to the processing position P.
6, and the work 2 after straightening press is extruded from the mold. Then, after this, the workpiece extrusion member 7 is moved by the air cylinder 72! is driven in the right direction, and by this operation, the workpiece 2 that has been subjected to straightening press processing is transferred to a workpiece conveyance line for the next process (not shown).

As explained above, in this embodiment, the workpieces 2 transported from the previous process are subjected to straightening press processing and the necessary workpiece loading, posture correction, oiling, workpiece setting, and workpiece removal operations are carried out in order to send the workpiece 2 to the next process. Since this is performed independently by each device, the degree of freedom in the layout of each device is extremely high. Therefore, each device can be arranged linearly and the work 2 can be transported in one direction without waste, and there is no need to move the work 2 in a loop like the conventional work transport device 1. In addition, the table 5 included in the conventional work transfer device 1 is also eliminated, and as a result, an excellent effect is obtained in that the installation area is kept to the minimum necessary.

In addition, in this example, each device is arranged linearly, but the workpiece conveyance device of the present invention is not limited to this, and the workpiece conveyance mode and workpiece conveyance device in the steps before and after straightening press processing can be installed. Naturally, it is possible to change the direction midway depending on the space situation.

By the way, in the workpiece conveyance device 7 of this embodiment, the following special effects were obtained.

First, when dealing with a different type of workpiece 2, the adapter 35 of the posture correction device 11 and the gripping claw 4 of the workpiece gripping mechanism 45 are used.
This can be done by simply replacing 7.48 of the holders, and compared to the conventional work transfer device 1 which required replacing all the holders 6, the workability has been significantly improved. In addition, since there is no equivalent to the conventional holder 6, there is no need to provide the convex portion 2a on the workpiece 2, and for this reason, the convex portion 2a after straightening press
The work of cutting workpiece 2 was also eliminated, resulting in a significant cost reduction for workpiece 2. Since the oil supply device 12 is provided to supply oil to the workpiece 2 that is rotated between the posture correction position P4 and the workpiece unloading position P5, the workpiece 2 is well drained of oil, and machining accuracy is poor due to excessive oiling. That is, the occurrence of deterioration of press working accuracy due to the formation of an oil film between the workpiece 2 and the die during straightening press due to excess oil has been significantly reduced.
Since the workpiece unloading section 23 is provided at the position, the effect that the amount of movement of the spindle 28 of the posture correcting section 22 can be reduced is also obtained. In other words, 0. If there is no workpiece unloading section 23, the workpiece 2 at the posture correction position P4 is moved to the air chuck 61.
This requires the spindle 28 to be raised significantly so that the air chamber 61 enters below the spindle 28.

[Effects of the Invention] As explained above, in the present invention, each device independently performs the various operations necessary to set and remove the work to be conveyed on the line after sintering into the mold of the straightening press device. Therefore, the degree of freedom in the layout of the workpiece conveyance device is extremely high. Therefore, by arranging the workpiece conveyance device according to the workpiece conveyance mode in the steps before and after straightening press working, an excellent effect can be obtained in that the installation area can be kept to the necessary minimum.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention, in which FIG. 1 is a plan view of the workpiece conveyance device, FIG. 2 is a partially sectional front view of the workpiece conveyance device, and FIG. 3 is a partially cross-sectional front view of the workpiece conveyance device. 4 is a left side view of the posture correction unit that constitutes the posture correction device, and FIG. 4 is A in FIG. 3.
5 is a sectional view taken along the line n-B in FIG. 3, FIG. Figure 7 is a sectional view taken along line C-C in Figure 6, Figure 8 is a left side view of the workpiece setting device, Figure 9 is a plan view of a conventional workpiece conveyance device, and Figure 1O is a conventional workpiece conveyance device. FIG. 3 is a plan view showing a workpiece fitted into the holder of FIG. 2...Workpiece, 9...Correcting press device, 10...Workpiece loading device! death····
・Attitude correction device, 12... Refueling device, 13...
... Work setting device, 14... Work removing device, P5... Work unloading position, P6...
...Processing position.

Claims (1)

[Claims] a workpiece taking-in device that takes in the workpiece conveyed on the line from a previous process; a posture correction device that corrects the posture of the workpiece taken in by the workpiece-taking device to a state in which it can be engaged with a mold of a correction press device; and a refueling device for the workpiece. and a reciprocating reciprocating position between the workpiece delivery position of the posture correction device and the processing position of the correction press device, and the workpiece whose posture has been corrected by the posture correction device is set in the mold of the correction press device. A workpiece conveyance device comprising a workpiece setting device for straightening the press, and a workpiece removing device for removing the workpiece after straightening press from the processing position of the straightening press device.