JPS62259904A - Work conveying device - Google Patents

Abstract

PURPOSE:To enable arbitrary setting of work conveying-in and conveying-out positions, by providing a cylinder device which is provided at its tip part with a work engaging member adapted to take out a work onto a conveyor. CONSTITUTION:With a cylinder device 42 contracted, a work engaging member 51 is engaged with the back of a rearmost work W of works W at the first stage to press forward the work. Thus, the works W are taken out, in order, from the frontmost work to the conveying-in side of a chain conveyor 39. In this case, the recessed part in the outside part of the work W is supported by means of a pair of chains 38 and 38 of the chain conveyor 39. The works W taken out to the conveying-in side of the chain conveyor 39 are conveyed, in order, to the conveying-out side. In this case, the work W is aligned in a place and given orientation by means of guide bars 40 and 40 disposed to the outsides of the chains 38 and 38.

Description

DETAILED DESCRIPTION OF THE INVENTION A9 Object of the Invention (1) Industrial Application Field The present invention relates to a workpiece conveyance device, and in particular, to a workpiece conveyance device that takes out a workpiece from its storage area and transports it to a predetermined position (for example, a workpiece processing position). The present invention relates to a work transfer device for moving a workpiece.

(2) Conventional Technology Conventionally, efforts have been made to save labor or automate production lines for various products. Such a production line is provided with a device for sequentially taking out a large number of workpieces from storage areas arranged along the production line and moving them to predetermined positions. For example, on an automobile engine production line, bearing camps and the like that are assembled integrally with an engine block, which is an engine component, are temporarily stocked in a storage area arranged along the production line. A device is provided for sequentially moving works such as hair ring caps in this storage area to predetermined positions.

Such devices include, for example, a robot device that grasps workpieces one by one and moves them to a predetermined position, and an i! 2. Dispense multiple pieces of work that have been placed.
There are known conveyance devices that dispense one piece at a predetermined position using AM.

(3) Problems to be Solved by the Invention However, the robot device is expensive, and it is necessary to feed the workpiece to a position where the robot device can grip it. In addition, even in the above-mentioned conventional conveying device using roller conhair, it is necessary to place the work on the roller conhair, and since the roller conhair cannot convey the work upward, it is necessary to adjust the unloading position of the work in the conveyance device. There is also the disadvantage that it cannot be set higher than the current position.

By the way, workpieces are often transported to the storage area by material carts having multiple shelves, etc., but in the conventional robot devices and transport devices mentioned above, the workpieces are often transported to the storage area by material carts that have multiple shelves, etc. There was a problem in that the workpieces loaded on the machine could not be taken out directly.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to arbitrarily set the loading and unloading positions of the workpieces, and to directly take out the workpieces arranged in multiple stages in the storage area from the storage area. It is an object of the present invention to provide a work transport device that can move a workpiece to a predetermined position.

B8 Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, a workpiece conveying device according to the present invention that takes out workpieces arranged in multiple stages in a storage area and moves them to a predetermined position is provided. A conveyor extending in the horizontal direction is placed on a support base that is moved in parallel and controlled in position, and a cylinder device is provided with a workpiece engaging member at its tip for taking out the workpiece onto the conveyor. It is characterized by being arranged.

(2) Function The workpiece conveyance device of the present invention having the above-described configuration is used to take out workpieces arranged in multiple stages in a storage area and move them to a predetermined position.

At this time, first, the movement of the support table is controlled so that the workpiece carry-in side of the conhair, which is horizontally extended on the support table, approaches the workpieces arranged in a desired row in the storage area.

Then, the height of the workpiece placement surface of the desired stage in the storage area is brought close to the height of the workpiece placement surface of the conveyor. Next, the cylinder device is extended so that the work engaging member at the tip of the cylinder device is placed under the workpiece placed in the storage area.
Move the workpiece away from the back while passing either above or to the side. Then, when the position of the work engaging member is adjusted and the cylinder device is contracted,
The work engaging member is brought into contact with the back surface of the work. Note that the position of the work engaging member can be adjusted by adjusting the height of the support base. That is, when extending the cylinder device, the work engaging member at the front end of the cylinder device passes above (or below) the work and moves backward from the back surface of the work without interfering with the work. With the workpiece engaging member moved to the back of the workpiece, the height of the support base is moved downward (or upwardly) to move the workpiece engaging member downward (or upwardly), and the cylinder device is activated. When contracted, the workpiece engaging member can be brought into contact with the back surface of the workpiece. If the position of the workpiece engaging member is adjusted by raising and lowering the support base as described above, it is convenient because there is no need to separately provide means for adjusting the position of the workpiece engaging member. By moving the work-engaging member to the back surface of the workpiece and then moving the work-engaging member to adjust the position, the work-engaging member can be brought into contact with the back surface of the workpiece when the cylinder device is contracted. Out.

As described above, when the cylinder device is contracted after the workpiece engaging member is brought into contact with the back surface of the workpiece, the workpiece engaging member at the tip of the cylinder device engages with the back surface of the workpiece, and the workpiece is can be taken out onto the container.

In this way, after the workpiece is taken out onto the conveyor, the movement of the conveyor and the support base supporting it is controlled so that the discharge side of the conveyor approaches the predetermined position. Next, when the conveyor is driven, the workpieces on the conveyor are moved to the predetermined position through the discharge side. Next, in the same manner as described above, the support table is controlled to move in the vertical direction, and the workpiece inlet side of the conveyor extending horizontally on the support table is moved to the workpiece placed on another stage in the storage area. bring them closer. Then, the workpiece is taken out in the same manner as described above and moved to the predetermined position. By repeating this, all the works in the storage area can be moved to predetermined positions.

(3) Example An example of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, the floor F is provided with a positioning member FI, a groove F2, and a workpiece storage area A. . In the workpiece storage area A, a material trolley is placed at a predetermined position using a positioning member F on the floor F.

On the material trolley, seven stages and four rows of bars B extend in the left-right direction in the figure. The left end of bar B is suitably supported by the surrounding frame of the material carriage. The right end of the bar B is also supported by the surrounding frame, but this supporting means is designed so as not to hinder the entry of a workpiece engaging member 51, which will be described later, into the material carriage. Workpieces W are supported in an aligned state by a pair of horizontal adjacent bars B on the left and right. The workpiece W in this embodiment is a hair ring cap for a four-cylinder engine shown in FIG. 8, and has four recesses w, , W2 . . . corresponding to four cylinders. W,,W, are formed.

The recesses W, , W located on the outside are supported by the bar B in an aligned state. Therefore, in this embodiment, the workpieces W are arranged in seven stages and two rows. The vertical spacing between the aligned workpieces W is determined so as to form a space into which a cylinder device for taking out the workpieces, which will be described later, can enter.

The work transport device C is the object of the present invention, and is for taking out the work W from the work storage area A and supplying it to the assembly line L. The structure and operation of the workpiece conveyance device C, which is the object of the present invention, will be explained in detail later, and the assembly line L will be briefly explained first.

The assembly line L is equipped with a work alignment device 310, a bottling device R, an engine block conveyor, and the like.

The work W taken out from the work storage area A and transported by the work transfer device C is supplied to the work alignment device S of the assembly line L. The workpiece alignment device S is equipped with a chain converter S consisting of a pair of horizontal chains, limit switches Sz, Sz, etc., and is a device for arranging the workpieces W supplied from the workpiece transfer device C at a predetermined position. .

On the other hand, the engine block W0 (see FIG. 8, FIG. 2, etc.) conveyed by the engine block conveyor K is also placed at a predetermined position by the limit switches 1, K2, etc.

The robot device R is equipped with a horizontal cylinder R1, a vertical cylinder R2, etc. shown in FIG. It is assembled onto the engine block W0 placed at a predetermined position on the conveyor.

Next, the workpiece conveyance device C will be explained in detail.

The workpiece conveyance device C includes a foundation member CI and a vertical column C2, which will be described later.
, a vertical threaded rod C3, a base C4, a support C2, etc.

The foundation member C1 includes a planar (FIG. 2) generally inverted U-shaped outer foundation member 1 fixed to the outside of the periphery of the groove F2 of the floor F, and a plate fixed to the inside of the groove F2. The vertical column C is provided with an inner foundation member 2 having a shape of
2 is firmly supported vertically. The vertical column C2 is formed into a substantially U-shape in plan section (see FIG. 2) from a center wall 4 and a pair of left and right side walls 5.5 connected to both sides of the center wall 4. A vertical guide rail 6.6 is arranged on each outer side of the .5. A vertical threaded rod C3 is disposed in a concave space surrounded by the central wall 4 and the pair of side walls 5, 5. Vertical screw rod C
3 is rotatably supported by the upper end support plate 7 and the inner base member 2 fixed to the upper end of the vertical column C2. In addition, this vertical rod C3 has a motor M (see FIG. 1) supported by the inner foundation member 2,
Rotation in both forward and reverse directions is controlled by a suitable power transmission means 8.

The base C4, which is slidably supported in the vertical direction by the vertical column C2, has a vertical center wall 9a and a vertical center wall 9a on its base end portion (the portion supported by the vertical column C2), and a vertical center wall 9a on both sides thereof. The proximal end member 9 has a substantially U-shaped planar section and is composed of a pair of connected vertical side walls 9b, 9b. On the inner surfaces of the side walls 9b, 9b of the proximal end member 9, there are guide shoes 10.1 which are slidably fitted into the guide rails 6.
0 is fixed. Further, on the inner surface of the central wall 9a of the base end member 9 having a substantially U-shaped planar section, there is a sliding block that protrudes into a concave space surrounded by the central wall 4 of the vertical column C2 and a pair of side walls 5.5. 11 is fixedly installed. This sliding block 11 is arranged at the upper end of the base end member 9. This sliding block 11 is formed with a female thread that threadably engages with the vertical threaded rod C3. As a result, the base end member 9, together with the sliding block 11, rises along the vertical column C2 when the vertical threaded rod C3 is rotated in the forward direction, and when the vertical threaded rod C3 is rotated in the opposite direction, It's supposed to go down. On the outer surface of the center wall 9a of the base end member 9, there is an inverted U-shaped plate 1 having an inverted U shape in FIGS. 1 and 3.
The proximal end sides of the two are connected by suitable fixing means such as welding. The inverted U-shaped plate 12 has a horizontal top wall 12a,
It is composed of a pair of vertical hanging walls 12b, 12b. A long hole 12C (see FIG. 2.3.5) is formed in the top wall 12a. As shown in FIG. 1, a strength reinforcing member 13 is disposed inside the inverted U-shaped plate 12 at an appropriate position between the base end and the distal end of the inverted U-shaped plate 12. This strength reinforcing member 13 has through holes 13a, 13a for weight reduction, and the hanging wall 12b.

It is arranged from the lower end to the upper part of 12b.

Strength reinforcing members 14 as shown in FIGS. 1 and 3 are disposed on the inner upper part of the inverted U-shaped plate 12, respectively.

Further, as is clear from FIG. 5, a pair of support brackets 15.15 are fixed to the lower surface of the top wall 12a at both ends of the elongated hole 12C in the elongated direction. Piston rod 16 supported by this support bracket 15.15
are arranged along and below the elongated hole 12c. A piston 17 is located approximately at the center of the piston rod 16.
is fixed. A cylinder 18 is disposed outside the piston 17 and the piston rod 16 and is slidable along the piston rod 16.

A protruding member 19 is fixedly provided on the outer side of the cylinder so as to pass through the elongated hole 12c and protrude upward. Also, the oil chamber in the cylinder 18 located on the left side in FIG. 5 of the piston 17 and the cylinder 1 located on the right side in the diagram.
The oil chambers in 8 are connected to an external hydraulic circuit (not shown) by connecting oil passages 20 and 21, respectively. When the high pressure oil side of the external hydraulic circuit is connected to the connection oil passage 21, the cylinder 18 and the protruding member 19
is moved to the tip side (right side in FIG. 5) of the base C4, and when the high pressure oil side of the external hydraulic circuit is connected to the connection oil passage 20, the cylinder 18 and the protruding member 19 are moved to the base C4. It is moved to the proximal end side of C4 (to the left in FIG. 5). The projecting member 19 is provided with a horizontal support bar 22 that projects in the horizontal direction (left-right direction in FIG. 3) perpendicular to the direction of movement of the projecting member 19.

Further, as is clear from FIG. 5, a pair of positioning brackets 23, 23 are fixed to the upper surface of the top wall 12a at both ends of the elongated hole 12C in the elongated direction. The positioning brackets 23 and 23 are provided with positioning members 24 and 24, respectively. These positioning members 24, 24 are respectively constituted by screws that thread through the positioning brackets 23, 23, and position the support base C1 that abuts the tips of the screws.

On the upper surface of the top wall 12a of the inverted U-shaped plate 12, there are a pair of horizontal guide rails 25.25 parallel to the elongated hole 12C.
is installed. A pair of guides 27.2 on the lower surface of the bottom plate 26 of the support stand C2 are provided by the guide rails 25, 25.
7 is slidably supported. The support stand C5 extends horizontally, with its elongated direction perpendicular to the elongated direction of the base C4.

A locking member 28 is fixed to the lower surface of the bottom plate 26, and the locking member 28 is composed of a pair of brackets 29 and 29 having a groove 29a opening downward. The respective grooves 29a, 29a of the brackets 29, 29 are engaged with the horizontal support bar 22 of the projecting member 19.

Therefore, when the cylinder 18 is moved to the proximal end side (left side in FIG. 5) or the distal end side (right side in FIG. 5) of the base C4, the support stand C1 equipped with the locking member 28 is , moves along the guide rails 25, 25 on the base C4 together with the protruding member 19 of the cylinder 18. The position of the support stand C2 is determined by the bottom plate 26 of the support stand C2 coming into contact with positioning members 24 or 24' provided at both ends of the long hole 12c in the longitudinal direction. That is, when pressure oil is supplied into the cylinder 18 from the external hydraulic circuit through the connection oil passage 20 or 21, the support base C3 moves together with the cylinder 18 and is positioned by coming into contact with the positioning member 24 or 24'. Ru. Note that the positioning of the support stand C3 on the base C4 may be performed by moving the support stand C6 or by using a Mitswitch. Further, as a method for moving the support stand C2 on the base C4, instead of providing the piston rod 16 and the cylinder 18 that moves along the piston rod 16, for example, a horizontal screw whose rotation is controlled in both forward and reverse directions is used. A rectangular parallelepiped-shaped sliding block (corresponding to the cylinder 18) having a female thread screwed into the horizontal screw rod (corresponding to the piston rod 16) and the horizontal screw rod is provided, and by controlling the rotation of the horizontal screw rod, the rectangular parallelepiped-shaped sliding block (corresponding to the cylinder 18) is provided. It is also possible to move the sliding block along a horizontal threaded rod.

A pair of support walls 30, 30 are fixed to the upper surface of the bottom plate 26 along its longitudinal direction. Each support wall 30
．． 30 has a plurality of through holes 303 formed therein for weight reduction. In addition, the upper edge of each support wall 30.30 has a horizontal portion 30b, except for the carry-in side (left side in Figure 3.4) and the carry-out side (right side in Figure 3.4). ,3
0b is provided. And this horizontal part 30b, 30
Rails 31 and 31 are provided along the longitudinal direction on the upper surface of b. A sliding member 32° 32 whose position is adjustable in the longitudinal direction is supported at the loading side (left side in Fig. 3.4) end of each support wall 30° 30, and this sliding member 32° 32 The carry-in side sprockets 1-33 and 33 are rotatably supported, respectively. The reason why the loading side sprocket 33.33 is supported by the sliding member 32.32 whose position is adjustable in the longitudinal direction is to adjust the slack of the chain that is hung on the sprocket 1-33.33, which will be described later. .

On the inner side of each of the support walls 30, 30 on the discharge side, discharge side sub-quesses l-34, 34 are rotatably supported. A power transmission sprocket 35.3 that rotates coaxially and integrally with this unloading side sprocket) 34.34.
5 is arranged on the outside of said support wall 30.30.

This power transmission sprocket 35.35 has the bottom plate 2.
The rotation of a drive motor 36 supported by 6 is transmitted via a suitable power transmission member 37.

The power transmission member 37 includes a rotatable free rotation shaft 37a, a chain 37b that transmits the rotation of the drive motor 36 to the free rotation shaft 37a, and a chain 37b that transmits the rotation of the free rotation shaft 37a to the power transmission sprocket 34. Chains 37c, 37c, etc. are provided.

A chain 38.degree. 38 is threaded between the input side sprocket 33.33 and the output side sprocket 34.34. Each of these chains 38.degree. 38 is provided with a plurality of rollers 38a on its outer side. Furthermore, since these chains 38, 38 are driven while being supported by the rail 3131,
When the workpiece W is placed on the chain 38.38, the weight of the workpiece W prevents the chain 38.38 from hanging down.

These pair of chains 38.38 and chain 38.
Each of the members 30 to 34 supporting the chain 38 and the chain 38
．． A chain conveyor 39 is constituted by the members 35 to 37 for driving the chain conveyor 38.

A guide bar 40.40 as a work guide member is disposed outside the chain 38.38. The guide bar 40.40 is supported on the support wall 30.30 by a plurality of bolts 41 installed therein.

As is clear from FIG. 3, the end of the guide bar 40.40 on the carry-in side protrudes further than the carry-in side sprocket 1-33.33, and its leading edge is connected to the chain 38.
゜38It is placed somewhat higher than the height of the top surface.

The guide bar 40.40 is inclined downward as it goes toward the carry-out side, and the guide bar 40.40 is inclined downwardly toward the carry-out side sprocket 33.
At position 33, the height of the chain 38° is slightly lower than the height of 38. The loading side sprocket 33.3
The guide bars 40 and 40 located on the unloading side of the guide bar 40, 40 are inclined and lowered toward the unloading side, and then extend substantially horizontally. Further, the inclined downward portions of the guide bars 40, 40 are formed so that the distance between them on the carry-out side is wider than that on the carry-in side, as is clear from FIG.

These chains 38.38 and guide bars 40.4
0 is arranged so as to be able to enter into the recesses W,,w, of the workpiece W shown in FIG. And guide bar 40
．． The interval and position on the unloading side of 40 are adjusted by the bolt 41, and the workpiece W guided by this guide bar 40.4'O is unloaded at a predetermined position or posture.

A cylinder device 42 is arranged between the support walls 30, 30 for taking out the workpieces W to the workpiece storage area onto the chain conveyor 39 (see FIG. 5.6). The cylinder device 42 includes an outer cylinder 43, and the end of the outer cylinder 43 on the carry-out side (the right side in FIG. 4) is coupled to a carry-out side support block 44 fixed to the bottom plate 26. . The support block 44 includes an oil chamber 44a that communicates with the inside of the outer cylinder 43, and an oil passage 44b that connects the oil chamber 44a to an external hydraulic circuit (not shown). An end portion of the outer cylinder 43 on the carry-in side is coupled to a carry-in side support block 45 fixed to the bottom plate 26 . The carry-in side support block 45 is provided with a central through hole 45a that communicates with the inside of the outer cylinder 43. This carry-in side support block 45 is
Both upper shoulders have been cut off, forming a convex shape in Figure 5. The reason why both upper shoulder portions of the carry-in side support block 45 are cut out and formed into a convex shape is to arrange a support bar 52, which will be described later, in this cut portion. The carry-in side support block 45 also includes the outside cylinder 4
Also provided is an oil passage 45b for connecting the third inlet end (left end in FIG. 4) to an external hydraulic circuit (not shown).

Inside the outer cylinder 43, an inner cylinder 46 is slidably supported, passing through the central through hole 45a of the carry-in side support block 45. A cylindrical reinforcing member 47 is fitted into the inner portion of the inner cylinder 46 on the discharge side. As shown in FIG. 7, this cylindrical reinforcing member 47 is used to ensure the strength necessary to support the distal end portion of the cylinder device 42 in a cantilevered manner when the cylinder device 42 is extended. It is something. A moving block 4 is integrally connected to the carry-in end of the inner cylinder 46. The moving block 48 includes a central through hole 48a communicating with the inside of the inner cylinder 46, and a pair of side through holes 48b, 48b disposed on both sides of the central through hole 48a. The moving block 48 also includes an oil passage 48C for connecting the carry-in end (left end in FIG. 4) of the inner cylinder 46 to an external hydraulic circuit (not shown). The oil passage 48c communicates with the oil passage 45b in the external hydraulic circuit (not shown). Therefore, the oil passage 48c and the oil passage 45b are connected to the high-pressure side or low-pressure side hydraulic circuit at the same time.

A piston rod 49, which is slidably supported by the central through hole 48a of the transfer I block 48, has a piston 50 connected to its discharge side end.

This piston 50 is slidably supported by the inner cylinder 46. A workpiece engaging member 51 is connected to the carry-in end of the piston rod 49 .

The workpiece engaging member 51 is formed into a substantially U-shape, as clearly shown in FIG. Work engagement member 51
In FIG. 5, the left and right lower ends of the piston rod 49 are connected to support bars 52 and 52 parallel to the piston rod 49.

The support bars 52 and 52 are slidably supported by the side through-holes 43b and 48b of the moving block 48 via appropriate slide bearings, etc., and are freely movable through the cutout portion of the carry-in side support block 45. (See Figure 4).

A cylinder device 42 for taking out the workpiece W onto the conhair is constituted by the members indicated by the aforementioned numerals 43 to 52 and the external hydraulic circuit (not shown).

Next, the operation of the above embodiment will be explained.

First, using the positioning member F on the floor F, the material trolley on which the workpieces W are arranged in two rows and seven stages is placed at a predetermined position in the workpiece storage area A.

Next, the worker operates the morph M, operating switches of the hydraulic circuit (not shown), etc., to operate the workpiece conveyance device C as follows.

First, the support C6 is moved together with the cylinder 18 on the base C4 and placed at a predetermined position in the longitudinal direction of the base C4.

Then, the rotation of the vertical threaded rod C1 is controlled ff1l to move the support stand C5 together with the base C1 in the vertical direction along the vertical column C2. In this way, the horizontal and vertical positions of the support stand C2 are adjusted, and the carry-in side (side facing the workpiece storage area A) end of the support stand C6 is adjusted to the desired row and stage on the material carriage. Place it in the position corresponding to. That is, for example, when trying to take out the first workpiece W from the top, the workpiece engaging member 51 at the tip of the cylinder device 42 is inserted into the space between the first workpiece W and the second workpiece W. The support stand C is placed in a position where it can be accessed.
Place 2.

Next, the cylinder device 42 is extended, and the workpiece engaging member 51 at the tip thereof is moved to the Q rear side of the first stage workpiece W (the first
．． Move it further backward than the one shown in Figure 2 (left side). Then, the support stand C6 is slightly raised together with the base C4, and the workpiece engaging member 51 is raised to a position where it can engage with the back surface (rear surface) of the first stage workpiece W. In this state, the cylinder device 42 is contracted while operating the chain converter 39. Then, the workpiece engaging member 51 engages with the back surface of the rearmost workpiece W of the first stage workpieces W and presses it forward. Therefore, the first stage workpiece W is in front (right side in Fig. 1).
The items are taken out to the carry-in side of the chain conveyor 39 in order. At this time, the recess W6 on the outer side of the workpiece W. W4 is supported by a pair of chains 38, 38 of the chain conveyor 39. The works W taken out to the carry-in side of the chain converter hair 39 are sequentially conveyed to the carry-out side. At this time, the workpiece W is attached to the chain 38
．． 38 is aligned in a predetermined position and attitude by said guide bar 40.40 disposed on the outside. In this way, all of the first stage workpieces W are taken out onto the chain conveyor 39. Up to now, the operation of taking out the workpiece W onto the chain conveyor 39 has been explained by taking the workpiece W in the first stage as an example, but the workpieces W in the second and subsequent stages of the material cart and in other rows are also taken out in the same way.

Then, after taking out the workpiece W onto the chain conveyor 39, the position of the support stand C6 is moved as necessary, so that the end of the chain conveyor 39 on the unloading side faces the workpiece alignment device S of the assembly line L. Place it like this.

In this state, the chain conveyor 39 is operated to convey the work W.
is sent to the workpiece alignment device S from the carry-out side. As clearly shown in FIG. 2, the receiving end of the chain connecting hair S1 of the workpiece alignment device S is located at the input side end (the left end in FIG. 2).
is a pair of chains 38.38 with chain con hair 39
It is placed in between. Therefore, the recesses W, , W4 on the outer side of the work W are caused by the chain 38°38.
The workpiece W, which has been conveyed supported by
．． w, so that it is supported and transported. The subsequent processing of the work W transferred from the work storage area to the work alignment device S by the work transfer device C in this manner is as described above.

The operation of the workpiece conveyance device C described above can be performed fully automatically using a limit switch, a microcomputer, etc., or can be partially performed by an operator by turning the operation switch 0N-O.
It is also possible to perform the rest automatically by F operation.

According to the embodiment described above, the recess W of the workpiece W.

The work W4 can be supported by the chains 38, 38 of the chain converter 39, guided by the guide bar 40, 40, and carried out to the next process in a predetermined posture. Since the recesses W2 and W3 are supported by the pair of chains of the chain conveyor S1, the posture and position of the workpiece W can be restricted to 6 m. Therefore, there is no need to separately provide a device for accurately regulating the posture and position of the workpiece W. Further, the cylinder device 42 includes two stages of cylinders 43.4 on the outside and on the inside.
6, the stroke can be made longer despite the small size.

Although the embodiments of the workpiece conveyance device according to the present invention have been described above in detail, the present invention is not limited to the above embodiments, and without departing from the scope of the present invention described in the claims.
Various design changes are possible. For example, the movement of supports supporting conhair and cylinder devices is
It is also possible to use a hydraulic cylinder for all operations, and the shape of the workpiece engaging member is not limited to the U-shape, and can be engaged with the back of the workpiece to take out the workpiece. Any shape is acceptable as long as it is possible. Furthermore, when taking out the workpieces placed in multiple stages vertically in the storage area ii, when moving the workpiece engaging member and the distal end portion of the cylinder device to the back side of the workpiece to be taken out, the workpieces must be passed under the workpiece. Instead of moving (entering), it is also possible to move upward, to the left, or to the right.

C1 Effects of the Invention As described above, according to the workpiece conveyance 'AC of the present invention, by controlling the vertical movement of the support base that supports the conveyor, the workpiece unloading position in the workpiece conveying device can be arbitrarily set relative to the loading position. In addition, by providing a cylinder device having a work engagement member at the tip for taking out the workpieces on the conveyor, it is possible to easily transfer the workpieces arranged in multiple stages in the workpiece storage area onto the conveyor. can be taken out. The efficiency of transporting the workpiece can be greatly improved. Moreover, the planar space of the storage head can also be saved.

[Brief explanation of drawings]

FIG. 1 is a side view of a production facility equipped with a workpiece conveyance device according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. Side view of main parts along, 4th
The figure is a partially cutaway plan view of the main part of Figure 3, and Figure 5 is a partially cutaway plan view of the main part of Figure 3.
6 is a view taken along the line Vl-Vl in FIG. 4, FIG. 7 is a partially cutaway plan view showing the extended state of the cylinder device, and FIG. FIG. 2 is a perspective view of a workpiece handled in an example. 38.38...Chain, 39...Chain conveyor (conveyer), 40...Guide bar (work guide member), 42...Cylinder device, 43...Outer cylinder, 46...Inner cylinder , 49... Piston rond, 51... Work engagement member,

Claims (1)

[Claims] [1] Works (W) arranged in multiple stages in the storage area (A)
It is a workpiece conveyance device that takes out and moves a work piece to a predetermined position, and a conveyor (39
), and a cylinder device (42) having a work engaging member (51) at its tip for taking out the work (W) is disposed on the conveyor (39). Workpiece conveyance device. [2] The workpiece conveying device according to claim 1, wherein the support table (C_5) is also moved in parallel in the horizontal direction to control its position. [3] The cylinder device (42) is mounted on the support base (C_
5) and is supported horizontally by the conveyor (39).
) comprises a pair of chains (38, 38) disposed on both sides of the cylinder device (42). The workpiece conveyance device described in . [4] The cylinder device (42) includes an outer cylinder (4
3), an inner cylinder (46) that can be moved in and out of the outer cylinder (43), and a piston rod (49) that can be moved in and out of the inner cylinder (46). The workpiece conveyance device according to any one of items [1] to [3]. [5] The support stand (C_5) is connected to the conveyor (39)
The workpiece conveyance device according to any one of claims [1] to [4], characterized in that the workpiece conveyance device includes a workpiece guide member (40, 40) arranged along the workpiece guide member (40, 40).