WO2016194624A1

WO2016194624A1 - Workpiece-guiding device

Info

Publication number: WO2016194624A1
Application number: PCT/JP2016/064859
Authority: WO
Inventors: 章半田; 聖史煤賀
Original assignee: シチズン時計株式会社; シチズンマシナリー株式会社
Priority date: 2015-06-01
Filing date: 2016-05-19
Publication date: 2016-12-08
Also published as: JP6506627B2; JP2016221638A; TW201711790A

Abstract

The purpose of the present invention is to stably and smoothly guide workpieces in a workpiece-guiding device. The guiding device (30) for workpieces (1) is provided with a fixed shooter (32) in which a hole (32c) that allows a workpiece (1) to pass through is formed, and a turning shooter (33) having a first plate-shaped member (33a) and a second plate-shaped member (33b) that swing between a hole (32c)-blocking state and a state of being retracted from the hole (32c). When the first plate-shaped member (33a) is in the blocking state, a workpiece (1) is allowed to pass over the first plate-shaped member (33a). When the second plate-shaped member (33b) is in the blocking state, a workpiece (1) passing over the second plate-shaped member (33b) is held on the second plate-shaped member (33b), and as a result of the second plate-shaped member (33b) being switched to the retracted state, the workpiece (1) that is held on the second plate-shaped member (33b) is made to pass through the hole (32c) via the second plate-shaped member (33b).

Description

Work guide device

The present invention relates to a work guidance apparatus.

As a guide device that guides workpieces machined by machine tools such as automatic lathes, it is equipped with a guide part that guides the work. The guide part is formed with an opening that allows the workpiece to pass through, and the opening can be opened and closed freely. There is known a structure in which a closing portion that is closed is swingably provided, and has a moving path that passes over the closed opening and a moving path that passes through the open opening (for example, Patent Documents 1 and 2). reference).

JP 7-328552 A JP 2002-36227 A

However, when the workpiece is guided by a movement path that passes through the opening in the open state, the movement direction of the workpiece changes abruptly, so that the workpiece may not be guided stably and smoothly.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a workpiece guiding apparatus that can stably and smoothly guide a workpiece.

The present invention provides a guide portion for guiding the workpiece, in which an opening portion allowing passage of the workpiece is formed, and a plurality of closures that swing between a closed state of the opening portion and a retracted state from the opening portion. Forming a movement path through which the workpiece passes over the specific closed portion when the specific closed portion alternatively selected from the respective closed portions is in the closed state. In the closed state of the other closed portion that is made, hold the work that passes over the other closed portion on the other closed portion, by switching the other closed portion to the retracted state, It is a workpiece guiding device in which a plurality of the closing portions are integrally formed so as to form a movement path through which the work on the other closing portion passes through the opening.

According to the workpiece guiding apparatus of the present invention, the workpiece can be guided stably and smoothly.

1 is a plan view showing an automatic lathe system including a workpiece guiding device according to an embodiment of the present invention. It is a figure which shows the main body of the unloader in FIG. 1A. It is a perspective view (state in which the 1st closure part has blocked the hole) which shows a guide device. It is sectional drawing (a state where the 1st closure part has blocked the hole) which shows a guide device. It is a perspective view (state in which the 2nd closure part has blocked the hole) which shows a guide device. It is sectional drawing which shows a guide apparatus, and shows the state which the 2nd obstruction | occlusion part has obstruct | occluded the hole. It is sectional drawing which shows a guide apparatus, and shows a mode that the 1st obstruction | occlusion part returned from the state which obstruct | occluded the hole to the state which obstruct | occluded the hole. It is a perspective view which shows a rotation shooter. It is a perspective view which shows what joined the cylinder connection member to the rotation shooter.

Embodiments of a workpiece guiding apparatus according to the present invention will be described below with reference to the drawings.
<Configuration of automatic lathe system>
As shown in FIG. 1A, the automatic lathe system 100 includes an automatic lathe 10, an unloader 20, and a guide device 30.

The automatic lathe 10 includes four

modules

11, 12, 13, and 14. Each of the

modules

11, 12, 13, and 14 includes a spindle that grips and rotates the workpiece 1 to be processed, and a tool that processes the workpiece 1. A held tool post. Depending on the type of the workpiece 1, for example, the processing progresses on the processing path A sequentially transferred from the module 11 to the module 12, the module 13, and the module 14, and the module 13 without passing through the

modules

11 and 12. In some cases, the processing proceeds along a processing path B that is transferred to the module 14.
The workpiece 1A machined on the machining path A and the workpiece 1B machined on the machining path B have different outer shapes and the like. Whether to proceed with machining on the machining path A or with machining path B is set by the control device of the automatic lathe system 100.

The unloader 20 receives the workpiece 1 (work 1A or workpiece 1B) processed by the module 14 in which the cross-sectional contour of the outer peripheral surface is formed into a circle, and delivers it to the guide device 30. The unloader 20 includes, on the side of the module 14, a rail 22 and a ball screw 23 that extend along the main axis of the module 14, and a main body 21 that moves along the rail 22 as the ball screw 23 rotates. In FIG. 1A, (1), (2), and (3) show typical positions on the rail 22 when the main body 21 moves.

As shown in FIG. 1B, the main body 21 has a base 21a guided by the rail 22 and the ball screw 23, and a vertical posture (position (4)) around an axis M parallel to the rail 22 with respect to the base 21a. An arm 21b that rotates between a horizontal posture (position (5)) and a claw 21c that is provided at the tip of the arm 21b and that grips and opens the workpiece 1 by closing and releases the workpiece 1 are provided.
The arm 21b is extendable in the longitudinal direction by, for example, a nested structure.
The movement of the base 21a by the rotation of the ball screw 23, the rotation and expansion / contraction of the arm 21b, and the opening / closing of the claw 21c are set by the control device of the automatic lathe system 100.

<Configuration of guidance device>
As shown in FIGS. 2 to 5B, the guide device 30 includes a work setting unit 31, a fixed shooter 32, a rotating shooter 33, and an air cylinder.

As shown in FIGS. 2 and 3, the work set unit 31 is a part on which the processed work 1 is placed by the unloader 20 (see FIGS. 1A and 1B). The work setting unit 31 is lowered and raised, and is lower than the set table 31a when the set table 31a is raised, and above the set table 31a when the set table 31a is lowered. And an inclined bottom plate 31b. The inclination direction of the bottom plate 31b is a direction orthogonal to the axis N of the workpiece 1 placed thereon.
The elevation of the set table 31a is set by the control device of the automatic lathe system 100.

The fixed shooter 32 is formed in the shape of a slide, and includes a guide surface 32a that forms a bottom surface that is inclined and guard walls 32b that rise on both sides of the guide surface 32a.
The upper end of the guide surface 32 a is continuous with the lower end of the bottom plate 31 b in the tilt direction, and the tilt direction of the guide surface 32 a is a direction orthogonal to the axis N of the workpiece 1. The inclination angle of the guide surface 32a with respect to the horizontal plane is larger than the inclination angle of the bottom plate 31b with respect to the horizontal plane.
A hole 32c constituting an opening is formed in a substantially central portion in the inclination direction of the guide surface 32a so as to penetrate therethrough in a size that allows the workpiece 1 to pass through.
A support part 32e is formed on the back side below the hole 32c in the inclined direction.

As shown in FIG. 6A, the rotating shooter 33 constitutes a closing portion that closes the hole 32c, and a first plate member 33a that is formed in a size that closes the hole 32c along the guide surface 32a. And a second plate member 33b. The first plate member 33a and the second plate member 33b are integrally joined at a predetermined angle via a joining member 33c.
The predetermined angle is set to be larger than an inclination angle of the guide surface 32a (an angle formed by the guide surface 32a and the horizontal plane (an angle on the acute angle side)).

The first plate-like member 33a has an introduction portion 33f formed at the tip thereof so as to be bent in a direction approaching the second plate-like member 33b.
The second plate-like member 33b is integrally formed with an L-shaped cross section as a whole. The second plate-like member 33b has guard walls 33h that rise in the direction approaching the first plate-like member 33a on both sides.

As shown in FIGS. 3, 5A, and 5B, the rotation shooter 33 is configured such that the shaft 36 supported by the support portion 32e is passed through the shaft hole 33e (see FIG. 6A) of the second plate member 33b. Thus, the fixed shooter 32 is supported so as to be swingable about the axis C of the shaft 36.
The air cylinder 34 (see FIGS. 2 and 4) includes a cylinder 34a attached to a base 31c below the work set portion 31, and a piston rod 34b that moves forward and backward with respect to the cylinder 34a.
The tip end portion 34c of the piston rod 34b is connected by a pin 35b to a hole 35a of a cylinder connecting member 35 integrally joined to the second plate-like member 33b.

With the air cylinder 34 as a drive unit, the rotary shooter 33 is moved in the state where the first plate-like member 33a closes the hole 32c around the axis C and the second plate-like member 33b is opened as the piston rod 34b advances and retreats. It is driven to swing between the state where 32c is closed.
Control of air supply to the air cylinder 34 is set by a control device of the automatic lathe system 100.

A notch 32d that escapes the guard wall 33h of the second plate-shaped member 33b is formed in a portion of the guard wall 32b corresponding to the hole 32c along the inclination direction of the guide surface 32a. In a state where the second plate member 33b closes the hole 32c (see FIG. 5A), the guard wall 33h of the second plate member 33b is formed in the notch 32d formed in the guard wall 32b of the fixed shooter 32. Each is housed.

<Operation of the guide device>
According to the automatic lathe system 100 configured as described above, in the unloader 20, the main body 21 moves along the rail 22 and reaches the position (1) in FIG. 1A. Thereafter, the arm 21b rotates to a horizontal state (position (5) in FIG. 1B).

The unloader 20 extends the arm 21b toward the module 14 with the claw 21c open. When the claw 21c reaches the position of the work 1 gripped by the module 14, the claw 21c is closed and the work 1 is held. For example, the module 14 opens the chuck of the spindle, retracts the spindle, and releases the workpiece 1, so that the workpiece 1 is transferred to the unloader 20.
After receiving the workpiece 1, the unloader 20 contracts the arm 21b, and then rotates the arm 21b to a vertical state (position (4) in FIG. 1B). The unloader 20 passes through the position (2) in FIG. 1A and reaches the position (3) when the main body 21 moves along the rail 22.

Thereafter, the arm 21b rotates to a horizontal state (position (5) in FIG. 1B). The unloader 20 extends the arm 21 b toward the work set unit 31 of the guide device 30. When the claw 21c reaches the set base 31a (see FIG. 3) in the raised position, the claw 21c is opened and the workpiece 1 is placed on the set base 31a.
Thereafter, the unloader 20 contracts the arm 21b, rotates the arm 21b to a vertical state (position (4) in FIG. 1B), and stops.

The set table 31a descends after the work 1 is placed. In the process of lowering the set table 31a, the support of the work 1 placed on the set table 31a is transferred to the bottom plate 31b positioned above the set table 31a.
Since the bottom plate 31b is inclined, the supported work 1 slides down (including rolling) the bottom plate 31b along the inclined direction, and then is fixed to the bottom plate 31b using the fixed shooter 32 as a guide portion. The guide surface 32a of the shooter 32 slides down.

Here, the control device of the automatic lathe system 100 determines whether the workpiece 1 set on the set base 31a is the workpiece 1A processed on the processing path A or the workpiece 1B processed on the processing path B. The air cylinder 34 is controlled accordingly.
Specifically, when the workpiece 1 is the workpiece 1A, the control device causes the air cylinder 34 to be in a contracted state, the rotation shooter 33, and the hole 32c as shown in FIGS. The swing state is closed by the member 33a.

Due to the closed state of the hole 32c of the first plate-like member 33a, the work 1A that has slipped down to the guide surface 32a passes through the upper surface of the first plate-like member 33a that is a part of the guide surface 32a, and the guide surface It slides down along the movement path formed up to the lower end of 32a. By disposing the collection box 41 for the workpiece 1A at the tip of the lower end of the guide surface 32a, the workpiece 1A can be accommodated in the collection box 41.
On the other hand, when the workpiece 1 is the workpiece 1B, the control device extends the air cylinder 34, and the rotation shooter 33 is closed by the second plate member 33b, as shown in FIGS. 4 and 5A. Oscillating state. Thereby, the 1st plate-shaped member 33a will be in the retracted state from the hole 32c, and will stand up from the guide surface 32a.

The work 1B that has slipped down to the guide surface 32a due to the closed state of the hole 32c of the second plate-shaped member 33b hits the back surface of the joining member 33c that rises integrally with the first plate-shaped member 33a. The movement of the upper surface of the second plate-shaped member 33b that becomes a part is restricted and held on the second plate-shaped member 33b. The joining member 33c is a workpiece receiving portion that receives the workpiece 1 on the second plate-shaped member 33b and holds the workpiece 1 in a state where movement of the workpiece 1 is restricted. As shown in FIGS. 3 and 5A, the surface of the joining member 33c is provided with an impact absorbing member 33g such as rubber that absorbs an impact when the workpiece 1 is received, and the workpiece 1 stops by hitting the impact absorbing member 33g.

Next, the control device causes the air cylinder 34 to be in a contracted state, so that the rotating shooter 33 swings as shown in FIG. 5B, and the first plate-like member 33a returns to the state where the hole 32c is closed. The second plate member 33b is retracted from the hole 32c, and the work 1 held on the second plate member 33b passes through the hole 32c and moves to the lower side of the guide surface 32a.

In this state, the second plate-shaped member 33b is in an inclined state in which the tip side (the right end side in FIG. 5B) is lowered. Therefore, the workpiece 1B supported by the second plate-shaped member 33b slides down along the movement path formed up to the lower end that is the tip of the second plate-shaped member 33b. The work 1B can be accommodated in the collection box 42 by disposing the collection box 42 for the work 1B at the tip of the lower end of the second plate-shaped member 33b.

As described above, according to the workpiece guide device 30 of the present embodiment, the workpiece 1 is moved according to the type of workpiece 1 (work 1A, workpiece 1B) by swinging the rotation shooter 33. Two movement paths can be formed. Then, by arranging the

recovery boxes

41 and 42 corresponding to the type of the work 1 corresponding to each movement route, only the corresponding type of work 1A is accommodated in the recovery box 41 and stored in the recovery box 42. Can accommodate only the corresponding type of workpiece 1B.

Moreover, even when the work 1 is distributed to any movement path, the hole 32c formed in the guide surface 32a of the fixed shooter 32 can be maintained in a closed state.
Also, the moving path of the workpiece 1B is different from the structure in which the workpiece 1B is simply dropped freely downward from the hole 32c formed in the guide surface 32a, and the workpiece 1B is temporarily moved by the first plate member 33a via the joining member 33c. Since the second plate-shaped member 33b is slid and guided to the collection box 42 after being stopped, the outer surface of the workpiece 1B is prevented or suppressed from being scratched as compared with a case where the second plate-shaped member 33b is slid freely to the recovery box 42. In addition, it is possible to prevent or suppress the posture of the workpiece 1B from changing during free fall. That is, according to the guide device 30 of the present embodiment, the workpiece 1 can be stably and smoothly guided to the corresponding collection box 41 or the collection box 42.

Further, in the guide device 30 of the present embodiment, the first plate-like member 33a is moved from the state where the workpiece 1B is received by the first plate-like member 33a (the state where the second plate-like member 33b closes the hole 32c). When returning to the state where the hole 32c is closed, the length by which the piston rod 34b contracts may be changed stepwise.
In this case, since the inclination angle of the second plate-like member 33b changes according to the length by which the piston rod 34b contracts, a plurality of movement paths having different inclination angles can be formed. Thereby, the guide device 30 can selectively collect a plurality of types of workpieces 1B in the corresponding collection boxes by arranging a plurality of collection boxes corresponding to each movement route.

In the guide device 30 of the present embodiment, since the introduction portion 33f at the tip of the first plate-like member 33a is formed to be curved, the first plate-like member 33a has a hole 32c as shown in FIG. In the closed state, the introduction portion 33f is lower than the guide surface 32a adjacent to the introduction portion 33f. As a result, the workpiece 1A sliding down the guide surface 32a can be smoothly placed on the upper surface of the first plate member 33a.
In addition, you may form the introduction part which curved the front-end | tip also about the 2nd plate-shaped member 33b in the direction away from the 1st plate-shaped member 33a.

In the guide device 30 of the present embodiment, since the guard walls 33h are formed on both sides of the second plate member 33b, as shown in FIG. 5B, the work 1B sliding down the second plate member 33b is on the side. Can be prevented from falling.
Note that a guard wall may be formed on both sides of the first plate-like member 33a.

Since the guard wall 32b is also formed on both sides of the guide surface 32a, the guide device 30 of this embodiment can prevent the

workpieces

1A and 1B sliding down the guide surface 32a from falling sideways.
The guard wall 33h of the second plate-shaped member 33b is accommodated in the notch 32d of the guard wall 32b, whereby interference between the guard wall 33h and the fixed shooter 32 is prevented.

In the guide device 30 of the present embodiment, the impact absorbing member 33g is provided in the joining member 33c that functions as a workpiece receiving portion, and therefore, the impact when receiving the workpiece 1B can be reduced.
The workpiece guiding device according to the present invention may not include the impact absorbing member.

In the guide device 30 of the present embodiment, the first plate member 33a and the joining member 33c are integrated, so that the first plate member 33a works on the second plate member 33b. The first plate-shaped member 33a itself is used as a workpiece receiving portion to receive the workpiece 1 and hold the workpiece 1 on the second plate-shaped member 33b. You can also In addition, a work receiving portion separate from the first plate member 33a can be integrally provided on the second plate member 33b side.
In the guide device 30 of the present embodiment, the guide surface 32a is inclined in a direction substantially perpendicular to the axis N of the workpiece 1 whose cross-sectional outline is formed in a circle. Can be slid down.

In the automatic lathe system 100 of the present embodiment, the automatic lathe 10 includes four

modules

11, 12, 13, and 14, and two different workpieces 1 </ b> A and 1 </ b> B generated by differences in machining paths are targeted. The workpiece guidance device according to the present invention is not limited to the

workpieces

1A and 1B generated by the automatic lathe 10 of this embodiment.
Therefore, the workpiece guiding apparatus according to the present invention distributes the two types of

workpieces

1A and 1B generated by the one module even when two types of

workpieces

1A and 1B are generated by one module. Can be targeted. Further, even when there is only one type of work to be distributed, the work guide of the present invention is also used when, for example, two works having different states, such as a non-defective product and a defective product, are stored in separate collection boxes. The device can be applied.

Cross-reference of related applications

This application claims priority based on Japanese Patent Application No. 2015-111607 filed with the Japan Patent Office on June 1, 2015, the entire disclosure of which is fully incorporated herein by reference.

Claims

An opening for allowing the workpiece to pass through, and a guide portion for guiding the workpiece;
A plurality of blocking portions that swing between a closed state of the opening and a retracted state from the opening,
When a specific closed part alternatively selected from the respective closed parts is in the closed state, the workpiece forms a moving path through which the workpiece passes over the specific closed part, and the other closed part selected. In the closed state, the workpiece passing over the other closed portion is held on the other closed portion, and when the other closed portion is switched to the retracted state, A workpiece guiding apparatus in which a plurality of the closing portions are integrally formed so as to form a movement path through which the workpiece passes through the opening.
2. The workpiece guiding device according to claim 1, further comprising an introduction portion that is bent downward at a tip of the closing portion.
The work guiding apparatus according to claim 1 or 2, wherein a guard wall is formed on a side portion of the closing portion.
A guard wall is formed on a side portion of the guide portion,
The workpiece guide device according to claim 3, wherein a notch for escaping the guard wall of the closed portion is formed in the guard wall of the guide portion.
The workpiece receiving part that holds the workpiece on the other blocking part by receiving the workpiece passing over the other blocking part and restricting the movement is the specific blocking part side or the other blocking part. 5. The workpiece guiding device according to claim 1, wherein the workpiece guiding device is integrally formed on a part side and holds the workpiece on the other closing portion by the specific closing portion.