JPH08269795A - Clamping jig for holding work - Google Patents

Abstract

PURPOSE: To provide a clamping jig for holding a work which contributes to the facilitation and automation of transportation and posture adjustment at the time of use and has wide applicability. CONSTITUTION: This clamping jig has a clamping piece 21 which is held turnably at a main body 11, a clamping spring 39 which energizes this clamping piece 21 to a state ready to clamp the work and a clamping releasing means 31 (50) which releases the ready-to-clamp state of the clamping piece 21 against the energizing force of this clamping spring 39. The whole or part of these constituting elements are housed in a cylindrical body 50. The posture for the work 6 at the time of use constituted of the clamping piece 21 and the clamping part 12 integral with the main body 11 is made adjustable by adjusting the posture in the turning direction around the axial line Z of the cylindrical body 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a holding piece, a holding spring, and a holding release means, all or a part of which is housed in a cylindrical body for holding a workpiece. Regarding the clamping jig.

[0002]

2. Description of the Related Art In order to improve the productivity of various batch-type surface treatment apparatuses, it is necessary to convey a large amount of workpieces (workpieces) at a time while treating them in a treatment tank for a predetermined time.

For this reason, when the work (6) made of, for example, an aluminum sash is anodized in the electrolytic treatment tank (1), a large number of works (6) are sandwiched via a holding jig 10 as shown in FIG. It is held by the carrier frame (electrolytic frame) 5 and is immersed between the electrodes 2 (, 2) in the electrolytic treatment liquid Q.

A typical holding jig 10 is shown in FIG.
As shown in FIG. 4, the main body 11, the sandwiching piece 21, the sandwiching spring 39, and the sandwiching release operation lever 31 forming the sandwiching release means are configured.

That is, the holding portion 1 is provided on the front end side of the main body 11.
2 and the upright portion 13 are integrally provided, and the base end side (for example, the hooking portion 11F) of the transport frame 5 (for example, the power feeding bar 1).
14R). At least the holding portion 12 is made of a conductive material. The sandwiching piece 21 having the sandwiching claw portion 22 on the eccentric outer peripheral surface is rotatable about the support shaft 16 planted in the upright portion 13, and in a normal state, the sandwiching spring 39.
The work can be clamped by the urging force of.

The holding and releasing operation lever 31 is rotatably mounted on a support shaft 15 that is planted in the upright portion 13, and a grip portion 32.
By applying a forced external force in the direction of the arrow in FIG. 10, the drive portion 33 (connecting pin 34) can be moved in the guide groove 14 in the direction indicated by the chain double-dashed line. This connecting pin 3
A holding spring 39 is stretched between the shaft 4 and the support shaft 17, and a driven link 35 is provided between the holding spring 39 and the connecting pin 23 of the holding piece 21.

Here, if a forced external force is applied against the biasing force of the holding spring 39 to move the holding release lever 31 from the state shown by the solid line to the state shown by the chain double-dashed line, the holding piece 21 moves the support shaft 16 to the support shaft 16. The gripping claw portion 22 rotates away from the center and separates from the gripping portion 12. In this released state, the work 6 is inserted while adjusting the position in use that allows the work 6 to be easily and reliably gripped and held depending on the direction of the work 6, that is, the form of the work 6, formed by the holding portion 12 and the holding piece 21. Put in.

After that, except for the forced external force from the gripping portion 32, such as human hands, the sandwiching piece 21 can be sandwiched by the urging force of the sandwiching spring 39 and via the driven link 35. That is, the sandwiching claw portion 22 and the sandwiching portion 12
The work 6 is clamped by the
Can be mounted on

[0009]

By the way, in such a conventional structure, the work 6 is removed and the transport frame 5 (114R) is removed.
After being removed from the box, it is collected in a box or the like, but this posture when not in use is laterally laid down because the jig itself is in an unstable form, and at most, the horizontal direction can be aligned in FIG. Therefore, in the case of reuse, it is necessary to manually adjust the posture at the time of use for the new work 6, so that the work is complicated and enormous labor and time are required. Further, due to the difference between the non-use posture and the use posture, it is not possible to automate the clamping / releasing, the production efficiency is lowered, and the product cost is increased.

Thus, various automations of pinching and releasing have been studied and tried. For example, a hooking method in which a notch is processed in the work 6 and a hook-shaped jig is hooked therein, a driving method in which a wedge-shaped jig is forcibly driven into the work 6, and the work 6 is directly or indirectly laser welded to the transfer frame 5. And the welding method. However, in any of the methods, there is a risk that the workpiece 6 may drop during transportation, and thus instability in reliable holding of the work 6 remains, which not only increases the size and cost of the apparatus but also damages the work 6 itself. There are drawbacks in construction, maintenance and operation, such as waste of material and narrow applicability to the form of the work 6. Therefore, it is the actual situation that it is put to practical use in a limited case such as small-lot mass production.

If it is possible to automate the work 6 by using the holding jig 10 which is surely held and is low in cost and widely applicable, in other words, if the holding jig 10 that can realize automation can be established. I am convinced that the work of attaching and detaching the work 6 can be greatly simplified or eliminated, and as a result, the production cost can be greatly reduced.

An object of the present invention is to provide a clamping jig for holding a work, which has a wide applicability and can facilitate and automate posture adjustment during transportation and use.

[0013]

DISCLOSURE OF THE INVENTION The present invention has a novel structure in which a sandwiching type jig having advantages such as simple structure, small size, low cost and wide applicability is wholly or partially housed in a cylindrical body. It is formed so that it can be conveyed by rotating around the axis of the cylindrical body and the posture can be adjusted during use.

That is, the holding jig for holding a work according to the present invention comprises a holding piece rotatably held on the main body, and a holding spring for urging the holding piece to bring the work into a holdable state.
And a clamping releasing means for releasing the clampable state of the clamping piece against the biasing force of the clamping spring, and all or some of these constituent elements are housed in the cylindrical body, and the rotational direction about the axis of the cylindrical body. It is characterized in that the posture during use can be adjusted with respect to the work formed by the sandwiching piece and the sandwiching portion integrated with the main body.

[0015]

In the case of the present invention having the above-described structure, since the holding piece, the holding spring, and the holding release means are integrally housed in the cylindrical body, for example, the jig is moved from the unloading position to the loading position. It can be rotated and conveyed. Further, if the cylindrical body is sandwiched by chucks and rotated by a predetermined angle, the posture of the workpiece during use can be easily adjusted.

In addition, since the holding pieces can be held by the holding springs and can be put into the holding release state by applying a forced external force to the holding release means, they have all the same advantages as those of the conventional holding jig.

Therefore, jig supply and conveyance, posture adjustment during use,
It is possible to easily embody automation such as clamping / releasing workpieces and jig return transportation.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) The holding jig for holding the work is shown in FIGS.
As shown in FIG. 3, the holding piece 21, the holding spring 39, and the holding release means (31) are provided, and these constituent elements (21, 31, 3) are provided.
Part of (9) (31, 39, etc.) is stored in the cylindrical body 50,
The posture of the cylindrical body 50 is adjusted in the rotational direction about the axis Z, and the posture of the workpiece 6 formed by the sandwiching piece 21 and the sandwiching portion 12 during use can be adjusted.

The same parts as those in the conventional example (FIG. 10) are designated by the same reference numerals, and their description will be simplified or omitted.

In FIG. 1, a sandwiching piece 21 having a sandwiching claw portion 22 is provided with a support shaft 16 planted in a standing portion 13 of a main body 11.
Is rotatably mounted, and is normally urged by a holding spring 39 stretched between the connecting pin 23 and the support shaft 17 so as to be in a holding state shown by a solid line in the figure.

The pinch release operation lever 31 forming the pinch release means is rotatably connected to a rotating link 19A, which is rotatably held by the support shaft 15 on the side of the grip portion 32, via a connecting pin 36, and is driven. The portion 33 side is rotatably connected to a pivot link 19B rotatably held by the support shaft 17 via a connecting pin 34. Further, the holding release operation lever 31 (33) and the holding piece 21 are connected to each other by the driven link 3
5 are connected.

Therefore, the pinch release operation lever 31 (3
When a forced external force is applied to 3) to tilt and rotate in the direction of the arrow in FIG. 1, that is, in the state shown by the two-dot chain line, both rotation links 1
9A and 19B pivotally incline as shown by the chain double-dashed line, whereby the driven link 35 moves to the right to rotate the sandwiching piece 21 and bring it into the released state as shown by the chain double-dashed line. .

In the case of the first embodiment, the release state locking means 40 is provided in order to lock the release state. That is, the released state locking means 40 is rotatably attached to the main body 11 about the support shaft 47 and is urged by the lock spring 48 in the clockwise direction.
5, lock claw portion 46, and lock release operation lever 41.

Thus, when the pinch release operation lever 31 passes through the lock claw portion 46 and is tilted to the state shown by the two-dot chain line, it is locked by the lock claw portion 46 urged by the lock spring 48. Therefore, the released state of the sandwiching piece 21 can be locked. Therefore, the whole can be handled as a rotating body. Further, when the lock release operation lever 41 is pushed down, the holding piece 21 is pushed by the urging force of the holding spring 39.
Can be clamped. That is, it is possible to maintain the released state of the sandwiching piece 21 and facilitate the automation of racking.

Here, the cylindrical body 50 has the opening 5 shown in FIG.
1, the main body 11, a part (33) of the clamping release operation lever 31, the rotation links 19, A, 19B, the clamping spring 39.
Etc. are stored. Part (32) of the pinch release operation lever 31
Can project to the outside through the opening 51 as shown in FIGS. The cylindrical body 50 may be made large so that the whole including the sandwiching piece 21 and the like can be stored.

The shape of the cylindrical body 50 may be selected and determined to be an arbitrary shape such as a rectangular cylinder having a plurality of surfaces (for example, a hexagonal cylinder), etc., but in the case of this embodiment, the axis line is used. It has a cylindrical shape centered on Z. The cylindrical shape can infinitely increase the angle index in the rotation direction around the axis Z, and the jig 10 (50) itself can be rolled, and can be manufactured at a lower cost than the rectangular tube shape. it can.

That is, for example, when the jig mounting device 200 shown in FIG. 5 is used, the jig structure (10, 50) allows the jig 10 to be automatically mounted on the work 6.

In FIG. 5, a jig supply means 210 forming a part of the jig mounting apparatus 200 is composed of a movable bucket 212 rotatable around a support shaft 211 and a supply shooter 213, and the pallet 7 is attached to the movable bucket 212. By inclining as shown by the chain double-dashed line, the plurality of jigs (10, 50) collected on the pallet 7 can be automatically supplied to the jig separating means 220 by utilizing its rotation effect. In addition,
215 is a replenishment feed cylinder device.

The jig separating means 220 has a separating plate 2 having a plurality of holding portions 222 which are spaced apart from each other on the trace of the virtual circular axis.
21, an indexing cylinder device 223 for rotating the separating plate 221 by a predetermined angle for indexing, and a lifter 225 for lifting and feeding the indexed and separated jig 10 to the jig attitude adjusting means 230. Consists of. Note that 214
Is a defective jig discharge shooter.

The attitude adjusting means 230 sandwiches the columnar piece-shaped energizing piece 116 (which may be the tubular body 50) fixed to one end side of the main body 11 shown in FIG. It includes a chuck (not shown) that can be rotated by a selected angle, and clamps the work 6 with respect to the work 6 at the rotation angle of the tubular body 50, that is, the position defined by the gripping piece 21 and the gripping portion 12. It can be automatically adjusted to a suitable posture.

In order to adjust the relative position between the chuck and the jig 10 (50) or the jig 10 (50) and the workpiece 6,
The attitude adjusting means 230 is provided on a carriage device 260 (the carriage 261, wheels 262, rails 263) that moves the work 6 in the one-dimensional direction, and a position adjusting device 270 that moves the work 6 in the two-dimensional and three-dimensional directions. It is attached to (slider 271, elevator 274, etc.).

That is, it is understood that since the characteristics of the cylindrical body (50) can be fully utilized, the attachment / detachment automation of the jigs (10, 50) can be easily constructed.

Further, in the case of the first embodiment, the work (aluminum sash) 6 to which the jig 10 (50) is automatically attached by using the jig attaching device 200 is moved by the pitch feed conveyor 109C as shown in FIG. The workpiece 10 is sent to the transport frame 5, and the jig 10 (50) is automatically mounted on the transport frame 5 so that the work 6 can be automatically racked on the transport frame 5.

That is, in FIG. 4, a fixed body 113 having a power feeding piece 114 and a movable body 111 having the power feeding piece 114 and rotatable about a support shaft 112 are mounted in advance on the transport frame 5. Incidentally, 115 is a cable.

Then, the movable body 111 is opened to the state shown by the solid line, and the work 6 is conveyed from the front side to the depth side of the paper at a predetermined pitch by the conveyor 109C,
The conducting piece 116 of each jig 10 is fixed to the fixed body 113 (11
4) Send it on to get on. After that, the movable body 11
If 1 (114) is closed as shown by the chain double-dashed line, it is easy to automatically rack a plurality of works 6 on the carrier frame 5 via the jig 10 (50) at a predetermined pitch.

However, according to the first embodiment, the holding piece 21, the holding spring 39 and the holding release means (31) are provided, and a part (3) of these components (21, 31, 39) is provided.
1, 39, etc.) are housed in the cylindrical body 50, and the posture of the cylindrical body 50 is adjusted in the rotational direction about the axis Z of the cylindrical body 50 to adjust the posture of the clamping piece 21 and the clamping portion 12 when the workpiece 6 is used. Therefore, the holding piece 21 is made to be able to hold the work by the holding spring 39, and the holding release means (3
You can enjoy all the advantages of the clamping type, such as the characteristic that it can be clamped and released by applying a forced external force to 1), the reliability of work holding, low cost and wide applicability.
Since the whole can be rotated, jig supply and conveyance, posture adjustment during use,
It is possible to easily automate work clamping / release, jig return transportation, etc.

Further, since the cylindrical body 50 has a cylindrical shape, the jig 10 can be easily rotated or forcedly rotated. Therefore, in comparison with a polygonal cylinder or the like, it is suitable for allocating and adjusting posture adjustment during use with high resolution, and is suitable for automation of various kinds of transportation, and can be easily collected at the pallet 7 or the like and can be manufactured at lower cost.

Further, since the cylindrical body 50 is provided with the opening 51 and the holding and releasing operation lever 31 is formed to be retractable, the releasing operation of the holding piece 21 can be easily performed from the outside. Therefore, the automation of attachment to the work 6 can be further facilitated.

Further, the release state locking means 40 is provided so that the holding release state in which the holding release operation lever 31 is retracted into the tubular body 50 can be locked. Therefore, since the entire jig 10 can be handled as the rotating body (50), for example, the rotation supply / conveyance using the supply shooter 213 can be smoothly performed, and automation can be more reliably promoted also from this point.

A columnar piece-shaped energizing piece 116, which is aligned with the axis Z of the cylindrical body 50, is provided on one end side of the main body 11. Therefore, if the energizing piece 116 is sandwiched by a chuck or the like instead of the tubular body 50, the posture adjustment during use can be performed more easily, and the racking on the transport frame 5 can be easily automated.

(Second Embodiment) This second embodiment is shown in FIGS.
As shown in FIG. The difference from the case of the first embodiment (FIGS. 1 to 5) is that the holding and releasing means is provided with respect to the main body 11 to the cylindrical body 5.
It is configured such that the holding piece 21 can be released by moving 0 in the direction of the axis Z.

In FIG. 6, the cylindrical body 50 has a cylindrical shape centered on the axis Z, and has a slide portion 55 slidably mounted on the main body 11. The slide portion 55 and the inner surface of the cylindrical body are provided. It is mounted so as to be movable relative to the main body 11 in the direction of the axis Z through the guide surface 13R shown in FIG. Although the opening 51 in the first embodiment is not provided, the front end surface 52 and the rear end surface 58 are provided.

Further, the lock spring 4 shown in FIG. 7 is provided between the support shaft 15 and the tip surface 52 which are planted on the main body 11 (13) side.
The main body 11 is provided with a fixed portion 11R. Therefore, in the normal state, the lock spring 4
The urging force of 8 pulls the cylinder 50 to the left in FIG. 6,
Moreover, since the slide portion 55 abuts the fixed portion 11R, the main body 11 and the tubular body 50 are locked as shown by the solid line in FIG. That is, since the sandwiching piece 21 is pulled by the sandwiching spring 39, it is locked in the sandwichable state as shown by the solid line.

Here, the cylindrical body 50 forming the pinch release means.
6 is moved to the right in FIG. 6 against the urging force of the lock spring 48, the inclined cam 53 integrally mounted in the cylindrical body 50 causes the cam follower 57 rotatably mounted to the connecting pin 36. Push down from the solid line state to the two-dot chain line state. That is, the rotation link 19A is tilted and rotated.

Then, the drive unit 33 moves the connecting pin 34 to the right. At this time, the rotation link 19B also tilts and rotates. Therefore, the driven link 35 rotates the sandwiching piece 21 in the clockwise direction about the support shaft 16 via the connecting pin 23. Therefore, the sandwiching piece 21 can be sandwiched and released as shown by the two-dot chain line.

Therefore, the fixed portion 11R is fixed by, for example, a cylinder device, and the tubular body 50 is fixed by the rear end surface 58, for example.
When the reciprocating claw member capable of engaging and disengaging is engaged with and moved in the right direction in FIG. 6 against the biasing force of the lock spring 48, the holding piece 21 can be opened. Then, if the reciprocating claw member is separated after inserting the work 6 into the holding portion 12, the cylindrical body 50 is returned to the original state as shown by the solid line by the urging force of the lock spring 48. You can That is, the jig 10 can be easily attached to the work 6 easily.

The pinching and releasing means is provided with a lock releasing piece 41A shown by a chain double-dashed line in FIGS. 6 and 7.
If the cylindrical body 50 is formed so as to be movable in the right direction after being sunk in the left direction in FIG. 6, the clamping force of the clamping piece 21 on the work 6 can be further ensured. In other words, when the work is transported by suspending it from the transport frame 5, it is possible to more reliably prevent the work from dropping due to the movement of the tubular body 50.

[0048]

According to the present invention, it has a sandwiching piece, a sandwiching spring, and a sandwiching release means, and all or some of these constituent elements are housed in the cylinder body, and the rotation direction about the axis of the cylinder body is used. When the posture of the work piece is adjusted by adjusting the posture of the work piece with respect to the work piece, the work piece can be held by the work piece with the work piece and a force release force is applied to the work piece release means. You can enjoy all the advantages of the sandwich type, such as the characteristic that it can be released from the sandwich, the certainty of holding the workpiece, low cost, and wide applicability, and because the whole can be rotated, jig supply and conveyance, posture adjustment during use, workpiece Clamping / release, jig return transportation, etc. can be easily automated.

[Brief description of drawings]

FIG. 1 is a side sectional view for explaining a first embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of the same.

FIG. 3 is likewise a front view.

FIG. 4 is also a diagram for explaining an example of a method of attaching to the conveyance frame.

FIG. 5 is also a diagram for explaining a jig attachment device.

FIG. 6 is a side sectional view for explaining a second embodiment.

FIG. 7 is a partially cutaway plan view of the same.

FIG. 8 is likewise a front view.

FIG. 9 is a diagram for explaining an example of use of a holding jig in the present invention and a conventional example.

FIG. 10 is a side view for explaining a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrolysis treatment tank 2 Electrode 5 Conveying frame 6 Work 7 Pallet 10 Clamping jig 11 Main body 11F Hooking part 11R Fixing part 12 Clamping part 13 Standing part 13R Guide surface 14 Guide groove 15 Spindle 16 Spindle 17 Spindle 19A, 19B times Dynamic link 21 Clamping piece 22 Clamping claw 23 Connecting pin 31 Clamping release operating lever (clamping release means) 32 Grip section 33 Drive section 34 Connecting pin 35 Driven link 36 Connecting pin 39 Clamping spring 40 Release state locking means 41 Lock release operating lever 41A Unlocking piece 45 Locking piece 46 Locking claw 47 Spindle 48 Locking spring 50 Cylindrical body (clamping and releasing means) 51 Opening 52 Front end face 53 Cam 55 Sliding part 57 Cam follower 58 Rear end face 109C Pitch feed conveyor 110 Attachment / detachment device 111 Movable body 112 spindle 113 fixed body 1 4 power feeding piece 114R power feeding bar 115 cable 116 current feeding piece 200 jig mounting device 210 jig supplying means 211 spindle 212 movable bucket 213 supply shooter 214 defective jig discharging shooter 220 jig separating means 221 separating plate 222 holding portion 223% Output cylinder device 225 Lifter 230 Jig posture adjusting means 260 Bogie device 261 Bogie 262 Wheel 263 Rail 270 Position adjusting device 271 Slider 274 Elevator

Claims (1)

[Claims] 1. A holding piece rotatably held by a main body,
A clamping spring for urging the clamping piece to bring the workpiece into a clampable state, and a clamping releasing means for releasing the clamping piece from the clampable state against the biasing force of the clamping spring, and all or one of these constituent elements is provided. The part is housed in the cylinder, and the posture is adjusted in the rotational direction about the axis of the cylinder so that the posture of the workpiece formed by the clamping piece and the clamping part integrated with the main body can be adjusted during use. A holding jig for holding a work.