JPS63189320A - Work distributing device - Google Patents

Abstract

PURPOSE:To perform turn-over simultaneously with variation of a pitch, by a method wherein, in a device which simultaneously distributes works to a plurality of other aligning parts by varying an aligning pitch, a chuck is rotatably and axially slidably disposed between on a rotary shaft situated between two aligning parts. CONSTITUTION:Works W aligned in initial positions P1-P5 are chucked in a first aligning part 2 by means of chuck claws 19 and 20 of swing arms 9-13. A rotary drive part 8 is actuated to rotate a rotary shaft 4 in a 180 deg. arc in a counterclockwise direction. This rotation causes the work W to rotate to the second aligning part 3 side togetherwith the swing arms 9-13. Simultaneously, a slide pin 15 is separated from a swing lever 27, and is engaged with a swing lever 28 waiting at a second aligning part 3. Rollers 43 and 44 are rolled along guide cam lines 36-40, and a pitch between the swing arms 9-13 is increased, and the arms are brought into respective distributing positions Q1-Q5. This constitution enables distribution of the works by performing turn-over simultaneously with variation of a pitch.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an apparatus that simultaneously distributes a plurality of workpieces from one alignment section to another alignment section by changing the alignment pitch, and particularly relates to a device that simultaneously distributes a plurality of workpieces from one alignment section to another alignment section by changing the alignment pitch. It relates to a completely new structure for turnover and simultaneous distribution to predetermined aligned positions.

(Prior art and its problems) For example, when transferring a workpiece from a transfer position to a processing position, from a processing position to a transfer position, or from one transfer path to another transfer path, each alignment section The alignment pitch of the workpieces is often changed. Conventionally,
A transfer means provided between both alignment sections grabs the workpieces one by one from one position and transfers them to the other position. At this time, either the transfer means itself is moved by a pitch or the receiver transfers the workpieces to the alignment section of the destination. The workpieces can be distributed by moving the workpieces in pitch, or by grabbing multiple workpieces at the same time from one alignment section and transferring them one by one while applying pitch feed to the transfer means itself or to the alignment section at the receiving end. By doing so, the work distribution process was performed.

However, this has the problem that the distribution time is extremely long.

(Means for Solving the Problems) Therefore, the present invention can greatly shorten the distribution time by simultaneously chucking and distributing multiple workpieces, thereby reducing driving force and greatly improving distribution efficiency. That is.

That is, the present invention provides a rotary shaft rotatably supported by a support section between a first alignment section and a second alignment section; a plurality of swinging arms each of which is restrained in the rotational direction by the moving shaft but slidable in the axial direction; a chuck/unchuck drive unit that drives the chuck jaws to open and close; and a plurality of chuck/unchuck drive units that are fixed to the support unit around the rotation axis and are each axially displaced from the one alignment unit to each alignment position of the other alignment unit. a guide cam strip, and a plurality of driven arms supported by the engaging protrusions guided by each guide cam strip and provided integrally with each of the swing arms, and a plurality of The two workpieces are chucked at the same time, and as the swinging arm rotates, the engaging protrusion moves along each guide cam strip, so that each swinging arm slides in the axial direction and chucks the multiple workpieces to the other. It is configured to simultaneously distribute to the alignment section.

(Function) A plurality of workpieces aligned at a predetermined pitch in the first alignment section are simultaneously chucked by each chuck claw of a plurality of swinging arms, and while the chucked state is maintained, each workpiece is rotated by 180° of the rotary shaft. The engaging protrusions attached to the swinging arms are guided by their respective guide cam strips to slide each swinging arm in the axial direction, and when it rotates 180°, it moves to a second alignment section that has a different alignment pitch from the first alignment section. The plurality of works mentioned above are distributed simultaneously.

When the workpiece is transferred to the second aligning section, the chuck claws of each swinging arm are opened, and while maintaining the unchucked state, the rotating shaft is reversed 180°, and each swinging arm is moved along each guide cam line in the same way. is returned to the first alignment section. Moreover, conversely, it is also possible to simultaneously chuck and simultaneously distribute a plurality of workpieces from the second alignment section to the first alignment section.

(Configuration of Example) Fig. 1 is a partially sectional plan view showing the device of the present invention;
The figure is a developed view showing the shape of the guide cam strip, and FIG. 3 is a vertical sectional view showing the state of the workpiece being chucked in the first alignment section.
FIG. 4 is a vertical sectional view showing the state of the workpiece unchucking in the second aligning section, FIG. 5 is a side view in the direction of FIG. 1 showing the rotary drive section, and FIG. 6 is a perspective view of the workpiece chuck section. FIG. 7 is a diagram showing the unchucking operation of the chuck jaws.

First, in FIG. 1, the distribution device 1 places five workpieces W at initial positions P4, P2, P3 of small pitches close to each other.
, P4, P, and a first aligning section 2 that aligns and supports five workpieces W in a 180° inverted state facing each workpiece W.
and a second alignment section 3 that aligns and supports the distribution positions Q1, Q2, Q3, Q4, and Q5 at equal pitches that are wider than the alignment pitch of the first alignment section 2; The upper five works W are simultaneously chucked, further turned over by 180 degrees, and simultaneously distributed to the second alignment section 3.

Reference numeral 4 denotes a rotation shaft provided between the first alignment section 2 and the second alignment section 3, and this rotation shaft 4 has a support frame 5.6.7 as a support section at both ends and an intermediate section. It is rotatably supported. Then, the rotary drive unit 8, which will be described later,
It is rotated 80 degrees back and forth.

9.10.11.12.13 is a swinging arm that is restrained in the rotational direction by the rotation shaft 4 and slidably mounted in the axial direction, and each of the swinging arms 9.10.11. 1
The tip portions of 2.13 are formed in a crank shape from the base portion so as to correspond to the initial positions P1, P2, P3, P4, and P5 when located on the first alignment portion 2 side. Furthermore, as shown in FIG. is formed.

A slide bin 15 is mounted between the long grooves 14 and is slidable within the long grooves 14. In addition, each swing arm 9.10.11.12.13 has a pair of upper and lower symmetrical switching arms 16.1 with each slide bin 15 as a fulcrum.
7 is attached so that it can be opened and closed.

Further, a shaft 18 is fixed to each swing arm 9, 10, 11, 12, 13 at a tip position from the long groove 14,
A pair of upper and lower chuck claws 19 and 20 are supported so as to be openable and closable with this shaft 18 as a fulcrum, and the shaft 18 is the center of opening and closing.

The middle part of each chuck claw 19.20 and the tip part of each switching arm 16.17 are connected to the bin 21, respectively.
．． 22, and a spring 23 is stretched between the pair of upper and lower bins 21 and 22. In addition, each tip of the chuck jaws 19 and 20 is
It is formed into a shape that engages with the end shape of the workpiece W to be gripped.

Reference numerals 24 and 25 denote first and second support shafts that are provided in parallel on the first alignment section 2 side and the second alignment section 3 side, respectively, slightly below the rotating shaft 4;
Both ends of the support shaft 24.25 are connected to support frames 5.26 and 5.6.
Each is rotatably supported.

Each position P1 of the first alignment section 2 is attached to the first support shaft 24.
, P2, P3, P4, P5, respectively, are integrally provided, and the tip of each swing lever 27 is connected to each swing arm 9.10.11.12.
13 is located in the first alignment part 2, it is engaged with each of the slide bins 15, respectively.

The second support shaft 25 is provided at each position Q1 of the second alignment section 3.
, Q2, Q3, Q4, Q5, respectively, are integrally provided, and the tip of each swing lever 28 is connected to each swing arm 9.10.11.12.
13 is located in the second alignment section 3, it is engaged with each of the slide bins 15, respectively. In addition, this second support shaft 25
A link 29 is integrally provided at the left end of the swing lever 28 and projects in the opposite direction to the swing lever 28, and a long hole 29a is formed at the tip of the link 29.

Opposed to this link 29, the support frame 5 has the second
A driving cylinder 30 is attached in a direction perpendicular to the support shaft 25, and a shaft 83 is protruded from the tip of an arm 32 fixed to the piston rod 31 of this cylinder 30.
8 is slidably engaged with the long hole 29a of the link 29.

Further, both ends of a connecting rod 34 are rotatably connected between the intermediate portion of the link 29 and the intermediate portion of the swing lever 27. That is, as the piston rod 31 of the cylinder 30 advances and retreats, one swinging lever 28 swings about the second support shaft 25 via the link 29, and at the same time, the other swinging lever 28 swings around the second support shaft 25 via the link 29. The movable lever 27 is also swung in the opposite direction around the first support shaft 24,
A pair of switching arms 1 by sliding the slide bin 15
6.17, the chuck claws 19 and 20, which are always held in the chucked or unchucked state, are opened and closed by the action of the spring 28.

In other words, the cylinder 80, the link 29, the swing lever 2
7.28, slide bin 15 provided on each swing arm 9.10.11.12.13, pair of switching arms 16.1
7. A workpiece chuck/unchuck driving section 35 is formed by the bins 21, 22, the spring 23, and the like.

36.37.38.39.40 each swing arm 9.10
．． 11, 12, and 13 for restricting movement in the axial direction (workpiece distribution direction), five guide cam strips are formed in a spiral shape that curves around the rotation shaft 4, and each support frame 5. It is fixed to a support plate 41 as a support part that is integrally provided between 6 and 6.

The central guide cam strip 38 has no displacement in the axial direction and is approximately 180°.
The guide cam strips 36, 37 and 39, 40 on both sides are respectively displaced by a required distance in the axial direction from the starting end to the ending end, and the guide cam strips 36, 37 and 39, 40 on both sides are approximately 180 degrees °It is formed in a spiral. Note that the guide cam strips 39.40 on the right side are the guide cam strips 37.3 on the left side, respectively.
6 and is formed approximately laterally symmetrically.

Further, each of the swing arms 9, 10, 11, 12, 13 has corresponding guide cam strips 36, 37, 38.
A driven arm 42 facing toward 39.40 is integrally provided on each of the driven arms 42, and at the tip of each driven arm 42 there is a guide cam strip 36.37.88.39.40. Roller 43.4 as a pair of engaging protrusions
4 is rotatably supported.

That is, each swinging arm 9.10.1 via the pivot shaft 4
At the same time as the 180° rotation of 1.12.13, the respective rollers 43.44 are
．． Each swing arm 9.10.11.12 guided by 40
．． 13 and 14 in the axial direction, and are distributed to each position Q1, Q2, Q3, Q4, and Q5 of the second alignment section 3.

Next, the rotation drive section 8 of the rotation shaft 4 will be explained with reference to FIG.

The base 45- has a cylinder 46 for rotational drive in the vertical direction.
is attached to its lower end so as to be swingable about a shaft 47 as a fulcrum. A shaft 49 is integrally connected to the piston rod 48 of this cylinder 46, and a hole 50 is formed in the shaft 49 to penetrate in the radial direction.

A gear shaft 51 parallel to the rotation shaft 4 is rotatably provided on the support frame 5, and a transmission arm 52 is attached to the tip of the gear shaft 51.
are connected by splines. The distal end of the transmission arm 52 is formed in a U-shape, and engages with the shaft support cylinder 49 from both sides so as to sandwich it therebetween. Then, both ends of the shaft 53 inserted into the hole 50 of the shaft 49 are connected to the transmission arm 52.
The forward and backward movement of the piston rod 48 causes the transmission arm 52 to undergo a swinging motion in the range shown from the solid line to the two-dot chain line in FIG. 5 through the shaft 53. That is, the cylinder 46 is supported at two points, the shafts 47 and 53, and swings in the range shown by the two-dot chain line from the solid line in FIG. 5 as the piston rod 48 moves back and forth. The forward and backward limits of the piston rod 48 are detected by two dogs 54.55 provided at the tip of the piston rod 48 and two limit switches 56.57 provided on the support frame 5 side. .

A large-diameter gear 58 is coaxially fixed to the gear shaft 51, and a small-diameter gear 59 is fixed to the rotating shaft 4 opposite to the large-diameter gear 58. Due to the gear connection between both gears 58 and 59, the rotation of the gear shaft 51 from the transmission arm 52 is accelerated and transmitted to the rotating shaft 4, and the rotating shaft 4 rotates 180 degrees between the forward and backward strokes of the piston rod 48. °Rotated back and forth.

In addition, in FIG. 5, 61.62 is a dog that moves forward and backward together with the piston rod 31 in the chuck/unchuck drive unit 35, and 63.64 is a dog 61.62.
This is a limit switch for detecting chuck and unchucking.

(Operation of Example) The operation of distributing five workpieces W from the first alignment section 2 to the second alignment section 3 by the present apparatus 1 will be explained.

First, FIGS. 1 and 8 show five workpieces W aligned at initial positions P1, P2, P3, P4, and P5, respectively, in the first alignment section 2, and each swing arm 9.10.11.1
The chuck claws 19 and 20 of 2.13 are in a chucked state, respectively. At this time, the piston rod 48 of the rotary drive unit 8 is in a forward state as shown in FIG.
2 is held in the upper rotational position shown by the solid line, thereby each swinging arm 9.10.11.12.
13 is located in the first alignment section 2.

Further, the piston rod 31 of the chuck/unchuck drive unit 35 is in a retracted state as shown in FIG. The other swinging lever 27 is held in a clockwise rotation position about the shaft 24, that is, both are held in the chuck position, and the slide bin 15 is switched to the right end in the long groove 14 at the tip of the other swinging lever 27. A pair of chuck claws 19 and 20 chuck the ends of each workpiece W.

From this state, the cylinder 46 of the rotary drive unit 8 acts, and while the piston rod 48 is retracted and moved to the retraction limit,
The transmission arm 52 is rotated downward via the shaft 53 to the angle shown by the two-dot chain line in FIG. This rotation is transmitted from the gear shaft 51 to the rotating shaft 4 via the gears 58 and 59, and the rotating shaft 4 is rotated 180 degrees counterclockwise from the state shown in FIG. Each swinging arm 9, 10, 11, 12, 13 that chucked W is 18 at the same time.
It is rotated 0° counterclockwise and positioned at the second alignment section 3. At this time, the limit switch 57 for detecting the backward limit is turned on by the dog 55.

During this period, the swing levers 27, 28 are held in the state shown in FIG. A pair of chuck jaws 19.
20 is always pulled in the chuck direction, and the chucked state of the workpiece W is maintained until it reaches the second alignment section 3. Then, at the second alignment part 3 position, the slide bin 15 is engaged from above with the swinging lever 28 that is waiting in the state shown in FIG.

In addition, each swing arm 9.10.11.12.13 18
9.10.11.12 Each swinging arm simultaneously rotates 0° to the left.
．． A pair of rollers 43, 44 provided on each of the rollers 43, 44, respectively, are rolled along the respective guide cam strips 36, 37, 38, 39, 40, and via each roller arm 42, each swinging arm 9, 10, 11, . 12 and 13 are slid in the axial direction along the rotation shaft 4 so as to gradually widen the pitch. and,
The tip of each swing arm 9, 10, 11, 12, 13 is located at each distribution position Q of the second alignment section 3 as shown by the two-dot chain line in FIG.
1, Q2, Q3, Q4, and Q5, and equally distributes five workpieces W to distribution positions Q1, Q2, Q3, Q4, and Q5 at the same time.

In this way, when the five workpieces W are transferred to the support stand 3a of the second aligning section 8, the cylinder 30 of the chuck/unchucking drive section 35 acts to move the piston rod 32 forward, and the shaft 33 and one swing lever 28 is moved clockwise about the shaft 25 via the link 29 to the connecting rod 34.
The other swing lever 27 is rotated counterclockwise about the shaft 24, that is, both of them are rotated in the unchucking direction.

As shown in FIG. 4, the swing lever 29 pushes the slide bin 15 to the right along the long groove 14, and the pair of switching arms 16
．． Move 17 to the right. At this time, as shown in FIG. 7, the pair of chuck claws 19.20 open around the shaft 18 against the spring 23 via the pair of switching arms 16.17, and the bins 21.22 open on the shaft 18. When lined up in a straight line, the pair of switching arms 16, 17 open to the maximum (Fig. 7b), and once they pass this dead center, the spring 23 immediately compresses, completely opening the pair of chuck jaws 19, 20. Switch to the unchuck state (Fig. 7C).

Each swinging arm 9.10.11.12.13 releases the workpiece W and then enters a return motion.

The cylinder 46 of the rotary drive unit 8 acts to advance the piston rod 48 to the forward limit position, rotate the transmission arm 52 upward to the angle shown by the solid line in FIG.
59, the rotation shaft 24 is moved from the state shown by the solid line in FIG. 4 to 180
° Each swinging arm 9.10.11.12.1 is rotated clockwise and at the same time is in an unchucked state as shown by the dotted line in the figure.
3 are simultaneously rotated 180° clockwise, and the first alignment section 2
will be returned to.

The next five new workpieces W have already been aligned in the first alignment section 2, and each arm 9, 10, 11, 12, 13 starts with a workpiece chuck operation that is opposite to that in Fig. 7, and then performs the same distribution. The action is repeated. In the second alignment section 3, the five workpieces W distributed at each position Q1, Q2, Q3, Q4, and Q5 are lifted by the lower conveyance means 60 and transferred to, for example, the next processing station while maintaining each alignment pitch.
transported at the same time.

Note that in this embodiment, five workpieces W were taken and distributed simultaneously, but this is just an example, and it is possible to easily create a device with similar functions using the same combination of components for other numbers of workpieces. can be formed.

In addition, if the tip of the swing lever 27.28 is formed into a U-shape to sandwich the slide pin 15, the chuck/unchuck operation can be performed using the swing arm 9.10.11.12.13.
By simply setting the rotation direction opposite to the direction of rotation of the second alignment section 3,
In other words, it is also possible to align a plurality of large pitch workpieces W into a small pitch at the same time as the 180° turnover from the first alignment section 2.

(Effects of the Invention) According to the present invention, the chuck/unchuck operation of each swinging arm supported by a rotation shaft, and the 180°
By combining the rotational movement and the pitch movement movement in the axial direction by each guide cam strip, multiple workpieces can be simultaneously chucked from one alignment section, turned over 180 degrees, and the alignment pitch can be adjusted to one alignment section. Since it is possible to simultaneously distribute to the other alignment section that has been changed, multiple rotation drive sources can be used to distribute multiple items at once to a predetermined position, making it easier to use in emergencies.
··work.

The distribution operation can be completed efficiently and in a short time. Furthermore, since each swing arm is moved in the axial direction along the fixed guide cam strip, the final position can be reliably determined and the dispensing operation can be performed accurately without positional deviation.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional plan view showing this device, Fig. 2 is a developed view showing the shape of the guide cam strip, and Fig. 3 is a vertical sectional view showing the state of the first aligning section when the workpiece is being chucked. , 4th
55 is a vertical cross-sectional view showing the state of workpiece unchucking in the second aligning section, FIG. 55 is a side view of the rotating drive section shown in FIG.
The figure is a diagram of the unchucking operation of the chuck jaws. DESCRIPTION OF SYMBOLS 1... Work distribution device, 2... First alignment part, 3...
Second alignment part, 4 - Rotation axis, 5.6.7... Support frame as support part, 8... Rotation drive part, 9.10, 41.1
2.13... Swing arm, 35... Chuck/unchuck drive unit, 36.37.38.39.40... Guide cam strip, 41... Support plate as support part, W2,

Claims (1)

[Claims] (1) A rotation shaft rotatably supported by a support section between the first alignment section and the second alignment section, a rotation drive section that reciprocally drives this rotation shaft, and a rotation shaft that rotates on the rotation shaft. A plurality of swinging arms each of which is restrained in the direction and slidable in the axial direction, a chuck claw provided at the tip of each swinging arm so as to be openable and closable, and the chuck claw is driven to open and close. a chuck/unchucking drive unit; a plurality of guide cam strips fixed to the support unit around the rotation axis and axially displaced from the one alignment unit to each alignment position of the other alignment unit; a plurality of driven arms each supporting the engagement protrusion guided by each of the guide cam strips and provided integrally with each of the swinging arms;
A plurality of workpieces are simultaneously chucked from one alignment section, and as the swinging arm rotates, the engaging protrusion moves along each guide cam line, so that each swinging arm slides in the axial direction, A work distribution device characterized by simultaneously distributing a plurality of works to another alignment section.