JP2004268248A - Workpiece input device, input fixture, gripping apparatus, and gripping fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a workpiece input device which grips a work without applying stress to the workpiece, and a gripping apparatus with such a simple structure that grips the workpiece with a variable thickness by a uniform force. <P>SOLUTION: This device has the pair of the gripping fixtures 2, 3 which grips the workpiece 1 in a strip shape, an input fixture 5 which pushes and moves a plurality of layered workpieces to a grip position of the gripping fixtures on a moving surface 4, and a back-up fixture which supports the workpiece at the grip position on the opposite side of the input fixture. The input fixture has a fork shape portion formed by three claws protruded in such a direction as to press the workpiece, and the top end of the central claw 51 in the folk shape portion is protruded from the top ends of the claws 52, 53 on both the sides by a prescribed distance. Besides, a grip portion 15 of the gripping fixture 2 has two rows of slit rows 13, 14 in which a slit 12 parallel to a grip surface 11 is formed in a dashed line, and the two rows of the slit rows are drifted to be formed in a staggered shape. When the grip surface grips the work, it is so constituted that the slit is collapsed and the grip portion is elastically deformed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

The present invention relates to a work input device, and more particularly, to a work input device suitable for holding an elongated work without applying stress, and an input jig constituting the work input device.
Further, the present invention relates to a gripping device, and more particularly to a gripping jig suitable for fixing a work having minute unevenness of thickness in a longitudinal direction and a gripping device provided with the same.

  Generally, when cutting a work, a cutting load is applied to the work, so that the work needs to be fixed with a pair of holding jigs. In particular, when performing mirror-surface cutting, a high cutting accuracy is required, so that it is necessary to firmly fix the work. An example of such a mirror-cut workpiece is an elongated strip-shaped optical transmitter array in which a plurality of rod-shaped lenses are arranged between two resin substrates.

In the automatic cutting machine, the optical transmission body array is moved between a pair of gripping jigs by pressing a surface to be cut by a flat surface of a loading jig. The optical transmitter array moved to between the pair of holding jigs is supported from behind by a backup jig parallel to the flat surface of the input jig. As a result, the optical transmitter array is aligned by being sandwiched between the two flat surfaces of the loading jig and the backup jig.
Conventionally, the aligned optical transmitter array has been gripped by an integrated gripping jig (fixed clamp) having a flat gripping surface extending linearly with a constant width (for example, see Patent Document 1). 1).

  However, the shape of the work before cutting is often distorted, and the surface to be cut of the work is generally not flat. For example, the optical transmitter array may be originally curved in a plane perpendicular to the cutting plane, that is, in a gripping plane. In addition, for example, a projection may be formed on a surface of the optical transmission body array to be cut by an adhesive or the like protruding from between the rod-shaped lenses. In these cases, when the optical transmission body array is sandwiched and aligned by the flat surface of the conventional input pressure jig and the backup jig, the optical transmission body array bends in a plane parallel to the gripping surface. In that case, the optical transmission body array is gripped and cut while being stressed. For this reason, if the optical transmitter array is removed from the holding jig after cutting, the stress is released, and the optical transmitter array warps to the opposite side. As a result, the straight cut surface is curved, and the optical characteristics of the optical transmission pair array are degraded.

  Further, the optical transmitter array has minute thickness unevenness along its longitudinal direction. In particular, when the optical transmission array is processed by stacking several stages in order to improve the production efficiency, the thickness unevenness of the optical transmission array is added, and the thickness unevenness as a whole is further increased. For this reason, it is difficult for an integrated gripping jig having a flat gripping surface to grip the optical transmission body array with a uniform force over the entire length in the longitudinal direction. If the gripping force is insufficient in a thin portion, the portion is displaced by the cutting stress, and it becomes difficult to perform high-precision cutting such as mirror cutting.

  Therefore, instead of an integrated gripping jig, a gripping jig divided into a plurality of portions along the longitudinal direction of the work is used. By using such a gripping jig, the gripping force can be adjusted according to the thickness unevenness for each part of the work (for example, Patent Document 2).

  However, when the gripping jig is divided, it is necessary to provide a gripping force supply unit that supplies a gripping force for each gripping jig. For example, it is necessary to set up a linear rail and provide an air cylinder for each divided gripping jig. As a result, the structure of the entire gripping device to which the gripping jig is attached becomes complicated, the weight increases, and the manufacturing cost of the device increases. In addition, it is necessary to adjust and maintain the parallelism of each gripping jig.

JP-A-9-162618 (FIG. 1) JP-A-11-156628 (FIG. 1)

Therefore, an object of the present invention is to provide a work input device capable of holding a work without applying stress to the work, and an input jig constituting the work input device.
Another object of the present invention is to provide a gripping jig having a simple structure capable of gripping a work having a thickness unevenness with a uniform force, and a gripping device having the same.

  In order to achieve the above object, the workpiece input device of the present invention is a pair of gripping jigs for gripping a workpiece by opposed gripping portions, and an input jig for moving the workpiece by pressing on a moving surface to a gripping position of the gripping jig. A backup jig that supports the workpiece at the gripping position on the opposite side of the loading jig, and the loading jig has a hawk-shaped part formed of three claws protruding in the direction of pushing the work, and a central part of the hawk-shaped part. The tip of the nail protrudes by a predetermined distance from the tip of the nail on both sides.

As described above, according to the present invention, the workpiece is loaded by substantially pushing the central portion of the workpiece with the claw at the center of the loading jig. Then, the work is aligned by being sandwiched between the center nail of the input jig and the backup jig. For this reason, even if the shape of the work is irregular, it is possible to prevent the work from being gripped while stress is applied to the work.
Further, by providing the pawls on both sides in addition to the central pawl, it is possible to prevent the work from being gripped while being largely inclined with respect to the cutting line.

In the present invention, preferably, the predetermined distance in the fork-shaped portion of the input jig is equal to or less than half the width of the cutting allowance of the work.
With this configuration, even when the work is inclined and gripped with respect to the cutting line, a shift amount due to the inclination of the work can be included in the cutting allowance.

Further, in the present invention, preferably, the backup jig has a fork-shaped portion formed of three claws facing the charging jig, and a tip of a center claw of the three claws of the fork-shaped portion is a claw on both sides thereof. Projecting from the tip of the lens by a predetermined distance.
Thus, the workpiece can be substantially aligned by being sandwiched between the center nail of the input jig and the center nail of the backup jig. As a result, the workpiece can be gripped without applying stress to the workpiece.

In the present invention, preferably, the predetermined distance in the fork-shaped portion of the backup jig is equal to or less than half the width of the cutting allowance of the work.
With this configuration, even when the work is inclined and gripped with respect to the cutting line, a shift amount due to the inclination of the work can be included in the cutting allowance.

Further, in the present invention, preferably, there is provided a work magazine for accommodating the works in a stacked state and supplying the accommodated works on a moving surface.
As described above, if the work magazine is provided, the work can be automatically and easily supplied.

Further, in the present invention, preferably, it is located immediately below the work magazine, and at a position between the three claws of the fork-shaped portion of the input jig, and is moved up from the moving surface and housed in the work magazine. A support jig for supporting the work and descending to the moving surface while supporting the work is provided.
In this way, if the support jig is provided, the work can be lowered from the work magazine onto the moving surface without collapse of the load.

  In the present invention, preferably, in at least one of the pair of gripping jigs, the gripping portion has a gripping surface and a plurality of slit rows in which a plurality of slits parallel to the gripping surface are formed in a broken line shape. The plurality of slit rows are formed such that the slits of one slit row overlap at least a part of the slits of the other slit row, and when the gripping surface grips the work, the slits of the slit row are crushed, thereby gripping the workpiece. The portion is configured to be elastically deformable.

  As described above, according to the present invention, by providing a plurality of slit rows in parallel with the gripping surface, flexibility is given to the gripping portion of the gripping jig. As a result, when gripping the workpiece, the gripping portion corresponding to the thick part of the workpiece is elastically deformed by the collapse of the slit. For this reason, the grip surface can be locally depressed to absorb unevenness in the thickness of the work.

  Furthermore, in the present invention, by forming the slits of one slit row so that at least a part thereof overlaps with the slits of the other slit row, the gripping surface of the gripping jig has substantially uniform flexibility. Have given. Thus, according to the present invention, even for a work having uneven thickness, the entire work can be gripped with a uniform force.

In the present invention, preferably, the gripping surface has a shape that extends linearly with a constant width.
Thus, even a long and thin work can be held with a uniform force over the entire length in the longitudinal direction of the work.

In the present invention, preferably, the interval between the grip surface and the slit row is in a range of 0.5 to 2 times the width of the grip surface.
The smaller the distance between the grip surface and the slit row, the higher the flexibility of the grip portion. Further, the smaller the width of the grip surface (the thickness in the direction perpendicular to the longitudinal direction), the higher the flexibility of the grip portion. For this reason, a suitable interval between the grip surface and the slit row is determined according to the width of the grip surface. Therefore, if this interval is in the range of 0.5 to 2 times the width of the gripping surface, the gripper is given sufficient flexibility to absorb uneven thickness of the work due to deformation within the elastic limit. be able to.

In the present invention, preferably, the interval between the slit rows is in the range of 0.5 to 2 times the width of the gripping surface.
Thereby, the grip portion can be given sufficient flexibility to absorb unevenness in thickness of the work due to deformation within the elastic limit.

In the present invention, preferably, the length of the slit is in a range of 3 to 5 times the width of the gripping surface.
The longer the slit, the higher the flexibility of the gripping part. However, if the slit is extremely long, there is a possibility that the gripping force for gripping the workpiece so that it does not move in the width direction may be insufficient. If the length of the slit is within the range of 3 to 5 times the width of the gripping surface, the gripping portion has sufficient flexibility to absorb uneven thickness of the work due to deformation within the elastic limit. Can be given.

In the present invention, preferably, the width of the slit is in the range of 0.1 to 0.5 mm.
When the gripping surface of the gripping jig is depressed by absorbing uneven thickness, it deforms at most until the slit is completely crushed. For this reason, if the slit width is too large, the gripping jig may be deformed beyond the elastic limit. When the gripping force is generated using an air cylinder, a coil spring, or the like, the width of the slit may be widened by suppressing the force within elastic deformation. On the other hand, if the slit width is too small, it will be difficult to deform sufficiently to absorb thickness unevenness in the longitudinal direction of the stacked and gripped workpieces.
Therefore, if the slit width is in the range of 0.2 to 0.5 mm, the gripping jig can be given sufficient flexibility to absorb unevenness in thickness of the work by deformation within the elastic limit.

In the present invention, preferably, the grip portion is made of metal.
If the grip is made of metal, flexibility can be easily provided by providing the slit rows.

Further, in the present invention, preferably, the grip portion is made of high-speed steel (SKH).
High-speed steel is a hard and highly viscous metallic material generally used for cutting tools and tools. Therefore, if the grip portion is made of high-speed steel, flexibility can be easily provided by providing the slit rows.

In the present invention, preferably, the grip portion is made of spring steel (SUP).
Spring steel is a metal material having a high elasticity limit and a fatigue limit as used for a leaf spring of a freight car, for example. Therefore, if the grip portion is made of spring steel, flexibility can be easily provided by providing the slit rows.

  Further, in the present invention, preferably, a gripping force supply means for supplying a gripping force between the pair of gripping jigs is provided.

  Further, according to the input jig of the present invention, the input jig for moving the work by pushing on the moving surface up to the holding position of the pair of holding jigs for holding the work, the three claws protruding in the direction of pressing the work , And the tip of the claw at the center of the fork protrudes by a predetermined distance from the tips of the claws on both sides.

  If such a charging jig is used in a charging device, the workpiece can be loaded by pressing the central portion of the workpiece with the center claw of the charging jig. As a result, the workpiece is sandwiched between the center nail of the input jig and the backup jig and aligned. For this reason, even if the work is distorted, it is possible to prevent the work from being gripped while stress is applied to the work.

  Further, the gripping device of the present invention is a gripping device including a pair of gripping jigs for gripping a work by opposed gripping portions, and gripping force supply means for supplying a gripping force between the pair of gripping jigs, At least one gripping portion of the pair of gripping jigs has a gripping surface and a plurality of slit rows in which a plurality of slits parallel to the gripping surface are formed in a broken line shape, and the plurality of slit rows are one slit row. The slit is formed so that at least a part thereof overlaps with the slit of the other slit row, and when the gripping surface grips the work, the slit of the slit row is crushed, so that the gripping portion can be elastically deformed. It is characterized by having.

  As described above, according to the gripping device of the present invention, a gripping jig having flexibility by forming a slit row in the gripping portion is used. In the gripping jig, by providing a plurality of slit rows in parallel with the gripping surface, flexibility is given to the gripping portion of the gripping jig. As a result, when gripping the workpiece, the gripping portion corresponding to the thick part of the workpiece is elastically deformed by the collapse of the slit. For this reason, the grip surface can be locally depressed to absorb unevenness in the thickness of the work. Thereby, the work can be gripped with a uniform force by absorbing unevenness in thickness of the gripping target object.

  Furthermore, in the present invention, by forming the slits of one of the slit rows so that at least a part thereof overlaps with the slit of the other slit row, the gripping surface of the gripping jig has substantially uniform flexibility. Have given. Thus, according to the present invention, even with a work having uneven thickness, the entire work can be gripped with a uniform force.

In the present invention, preferably, the gripping surface has a shape that extends linearly with a constant width.
Thus, even a long and thin work can be held with a uniform force over the entire length in the longitudinal direction of the work.

  Further, the gripping jig of the present invention is a gripping jig for gripping a work by a gripping part, and the gripping part has a gripping surface and a plurality of slit rows in which a plurality of slits parallel to the gripping surface are formed in a broken line shape. The plurality of slit rows are formed such that the slits of one slit row overlap at least a part of the slits of the other slit row, and when the gripping surface grips the workpiece, the slits of the slit row are crushed. Thereby, the grip portion is configured to be elastically deformable.

  As described above, according to the present invention, by providing a plurality of slit rows in parallel with the gripping surface, flexibility is given to the gripping portion of the gripping jig. As a result, when gripping the workpiece, the gripping portion corresponding to the thick part of the workpiece is elastically deformed by the collapse of the slit. For this reason, the grip surface can be locally depressed to absorb unevenness in the thickness of the work.

ADVANTAGE OF THE INVENTION According to this invention, a workpiece | work with uneven thickness can be gripped with uniform force with a simple structure.
According to the present invention, a workpiece can be gripped without applying stress to the workpiece.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1 and FIG. 2, an example of a loading device using a light transmitting array as a workpiece will be described with respect to the configuration of the workpiece loading device of the present embodiment. FIG. 1 is a schematic perspective view showing an embodiment of a work input device according to the present invention. In FIG. 1, the illustration of the support member of each component is omitted.
FIGS. 2A and 2B are top views showing the shape and operation of a charging jig that constitutes the workpiece charging device of the present embodiment. FIG. 2A corresponds to a top view of the work 1, the lower holding jig 3, the charging jig 5, and the backup jig 6 shown in FIG.

  The work input device of the present embodiment is an automatic processing device that performs a mirror-cutting process by firmly fixing a plastic optical transmission body array as a work between a pair of holding jigs. Put it in again.

  For this purpose, as shown in FIG. 1, the work input device of the present embodiment accommodates a pair of holding jigs 2 and 3 for holding a strip-shaped work 1, and accommodates the work 1 in a stacked state, and A work magazine 7 for supplying the accommodated works 1 onto the moving surface 4 and a work surface 4 supplied from the work magazine 7 to the moving surface 4 with a plurality of stacked work jigs 2 and 3 in a stacked state. There is provided a loading jig 5 that is moved by pushing upward, and a backup jig 6 that supports the work 1 that has been moved between the pair of gripping jigs 2 and 3 on the opposite side of the loading jig 5.

  Further, although not shown in FIG. 1, the work loading device includes a support jig 8 at a position directly below the work magazine 7. The support jig 8 rises from the moving surface 4, supports the work 1 stored in the work magazine 7, and descends to the moving surface 4 while supporting the work 1.

Also, the thickness of the charging jig 5 needs to be thinner than the number of sheets to be charged at once between the pair of gripping jigs 2 and 3, but if it is too thin, the charging operation becomes unstable. Therefore, the thickness of the input jig 5 is desirably set to a thickness obtained by subtracting about half the thickness of one work from the total thickness of the input number. For example, when the number of workpieces to be loaded is 10 and the total thickness is 10 mm, the thickness of the loading jig 5 is desirably about 9.5 mm to 9.9 mm.
The thickness of the backup jig 6 is preferably equal to or greater than the thickness of the input jig 5, and may be thicker than the entire input work as long as it can pass through a pair of open gripping jigs. Absent. Further, the gap from the moving surface 4 at the end of the work magazine 7 is preferably a gap that is about half as wide as one work piece than the total thickness of the work to be input.

  As shown in FIG. 1, the charging jig 5 of the present embodiment has a fork-shaped portion including three claws protruding in the direction in which the work 1 is pushed. Then, as shown in FIG. 2A, the tip of the claw 51 at the center of the fork-shaped portion protrudes by a predetermined distance d from the tips of the claws 52 and 53 on both sides. This predetermined distance d is preferably not more than half the width of the cutting allowance of the work 1. For example, when the width of the cutting allowance is 0.6 mm, the predetermined distance d is preferably 0.2 to 0.3 mm.

Further, as shown in FIG. 1 and FIG. 2, the backup jig 6 also has a fork-shaped portion including three claws facing the charging jig 5. The center claw 61 of this fork-shaped portion is located in front of the center claw 51 of the charging jig 5.
Then, as shown in FIG. 2A, the tips of the claws 61 of the backup jig 6 also protrude by a predetermined distance d from the tips of the claws 62 and 63 on both sides thereof. The predetermined distance d in the backup jig 6 is also preferably not more than half the width of the cutting allowance of the work 1. For example, when the width of the cutting allowance is 0.6 mm, the predetermined distance d is preferably 0.2 to 0.3 mm.

  Then, the loading jig 5 substantially pushes the center portion of the work 1 with the claw 51 at the center of the fork-shaped portion as shown in FIG. throw into. Then, as shown in FIG. 2 (B), the central portion of the work 1 in the longitudinal direction is sandwiched between the central nail 51 of the loading jig 5 and the central nail 61 of the backup jig 6, and the workpiece 1 is held at the gripping position. Be aligned.

  Therefore, the work 1 is substantially sandwiched and aligned at one position in the center in the longitudinal direction. Thus, even if the work is curved, the work can be held as it is without applying stress. For this reason, when the work after cutting is removed from between the gripping jigs 2 and 3, it is possible to prevent the straight cut surface of the work from warping.

  Further, by providing the pawls on both sides in addition to the central pawl, it is possible to prevent the workpiece from being gripped while being greatly inclined with respect to the cutting line. Further, as described above, since the predetermined distance d is set to be equal to or less than half the width of the cutting allowance, even when the work is inclined and held in the holding surface, the amount of displacement due to the inclination can be included in the cutting allowance. In addition, the appearance of the uncut portion, that is, the non-mirror surface portion can be prevented.

  Next, an example of the operation of the workpiece input device according to the present embodiment will be described with reference to FIG. A series of operations of the work input device described below are automatically controlled by a sequence controller (not shown) that executes a sequence program.

  FIG. 3A shows a cross-sectional view of the initial state. FIG. 3A corresponds to a cross section along AA in FIG. In the initial state, the loading jig 5 is located immediately below (directly to the right in FIG. 3) the work magazine 7. The work 1 supplied from the work magazine 7 is stacked below the work magazine 7 on the moving surface 4.

Next, as shown in FIG. 3B, the charging jig 5 is driven toward the gripping jigs 2 and 3 by an air cylinder (not shown). As a result, the loading jig 5 pushes the workpieces 1 while being stacked, and moves the workpiece 1 on the moving surface 4 to a gripping position between the pair of gripping jigs 2 and 3.
In addition, while the loading jig 5 is moving under the work magazine 7, the upper surface of the fork-shaped portion of the loading jig 5 supports the work 1 accommodated in the work magazine 7.
Thereafter, when the work 1 moves to the position where the gripping jigs 2 and 3 are gripped, the backup jig 6 supports the work that has moved to the gripping position between the pair of gripping jigs 2 and 3 on the opposite side of the loading jig 5. .
Then, as shown in FIG. 2B, between the pair of gripping jigs 2 and 3, the central part in the longitudinal direction of the work 1 is inserted into the center nail 51 of the loading jig 5 and the center nail of the backup jig 6. The work 1 is aligned with the work 61.

  At this time, the backup jig 6 is also moved by the air cylinder (not shown) past the holding jig to the place of the work 1 housed in the work magazine 7 and shown in FIG. As described above, the work 1 is sandwiched from the opposite side of the loading jig 5 in cooperation with the loading jig 5, and in this state, the work 1 is transported to a gripping position between the pair of gripping jigs 2 and 3. You may. This makes it possible to prevent the stacked individual works 1 from jumping out when the work 1 is loaded.

Subsequently, as illustrated in FIG. 3C, the aligned work 1 is gripped by a pair of gripping jigs 2 and 3. In the present embodiment, the upper gripping jig 2 descends and grips the work 1.
In the present embodiment, after the workpiece 1 is gripped and before the loading jig 5 returns to the initial state, the support jig 8 is located immediately below the work magazine 7 and the loading jig 5 At a position between the three claws, the work 1 is moved up from the moving surface 4 to support the work 1 stored in the work magazine 7.

  Subsequently, as shown in FIG. 3D, the charging jig 5 and the backup jig 6 are driven by their respective air cylinders to return to the initial position. Then, the pair of holding jigs 2 and 3 holding the work 1 are moved along the high-precision linear rail in front of the cutting machine in a direction perpendicular to the plane of FIG. For this reason, the gripping jigs 2 and 3 are not shown in FIG.

  Even if the charging jig 5 returns to the initial state, the work 1 supported on the upper surface of the charging jig 5 is supported by the supporting jig 8. Then, the support jig 8 descends to the moving surface 4 while supporting the work 1. Thereby, it is possible to prevent the stacked works 1 from collapsing on the moving surface 4.

  Then, returning to the initial state shown in FIG. 3A, the above-described series of operations can be automatically repeated. This makes it possible to perform unmanned and continuous processing in an apparatus for mirror-cutting the longitudinal end face of the plastic optical transmission element array.

Here, FIG. 4 shows a state in which the gripping device 10 gripping the aligned work 1 with the pair of gripping jigs 2 and 3 moves on the high-accuracy linear rail 70 in front of the cutting machine. The cutting machine includes a rotary head 30 to which a diamond cutting blade 31 is attached, and the rotary head 30 is rotated by a motor 32. When the gripping device 10 passes in front of the cutting machine, the longitudinal end face of the optical transmission body array 1 is mirror-polished by the diamond cutting blade 31.
In FIG. 4, a cutting device provided with a rotary head 30 having a diamond cutting blade 31 attached to only one end face side of the optical transmitter array 1 is installed. Since the other end face is also cut at the same time, the cutting device is also installed on the opposite side of the optical transmitter array 1.

Next, a configuration of the gripping device of the present embodiment will be described with reference to FIG.
FIG. 5 is a side view of the gripping device of the present embodiment. As shown in FIG. 5, the gripping device 10 of the present embodiment includes a pair of gripping jigs 2 and 3 that grip a workpiece on a processing table 50 with gripping portions facing each other, and a pair of gripping jigs 2 and 3. And a gripping force supply means 40 for supplying a gripping force to the motor. Here, both ends of the upper gripping jig 2 are fixed to the processing table 50 with the support columns 20. Then, the gripping force supply means 40 supplies a gripping force between the upper gripping jig 2 and the lower gripping jig 3 by lifting the lower gripping jig 3.

  In the present embodiment, the upper gripping jig 2 is an integrated gripping jig 2 in which the grip portion 15 is provided with the slit rows 13 and 14. Therefore, the entire work can be gripped with a substantially uniform force by using the gripping jig 2 having a simple integrated structure. As a result, there is no need to divide the gripping jig along the longitudinal direction of the work, and to separately provide gripping force supply means for each of the divided gripping jigs. Therefore, as compared with the case where the gripping jig is divided, the gripping device can be reduced in size and weight, and the manufacturing cost of the gripping device can be reduced.

  Further, in the present embodiment, since the gripping device 10 is reduced in weight as compared with a gripping device provided with a divided gripping jig, the gripping device 10 can be moved on the high-accuracy linear rail 70 at a higher speed. As a result, it is possible to shorten the cycle time of the mirror cutting.

  Here, the gripping jig of the present embodiment will be described with reference to FIGS. FIG. 6A is a side view of the gripping jig of the present embodiment, and FIG. 6B is a bottom view of the gripping jig shown in FIG. 6A as viewed from the gripping surface side. In FIG. 6 (B), the grip surface is shown with hatching, although it is not a cross section. FIG. 7A is an end view of the gripping jig shown in FIG. FIG. 7B is an enlarged view of a side portion of the gripping jig shown in FIG. 6B.

  In the present embodiment, an example of a gripping jig that grips an optical transmission body array (not shown) as a workpiece with a gripping portion will be described. The optical transmitter array has an elongated strip shape, and the end face along the longitudinal direction is mirror-cut. For this reason, the gripping jig 2 of the present embodiment is made of metal, and has a slender integrated shape as shown in FIGS. 6A and 6B.

  As shown in FIG. 6B, the grip surface 11 of the grip portion 15 that grips the work has a shape that extends linearly with a constant width. It is preferable that the length L in the longitudinal direction of the gripping surface 11 is longer than the length in the longitudinal direction of the work. Further, it is preferable that the width (the thickness in the direction perpendicular to the longitudinal direction) D of the gripping surface 11 is shorter than the width (the length in the direction perpendicular to the end face to be mirror-cut) of the optical transmission body. Here, the length L of the grip surface in the longitudinal direction is several hundred mm, and the width D of the grip surface 11 is about several mm.

  Further, as shown in FIG. 7A, the gripping portion 15 along the gripping surface 11 of the gripping jig 2 has a thickness equal to the width D of the gripping surface so as not to hit the cutting blade during cutting. It is made thinner than the part 16.

  As shown in FIG. 6A, in the present embodiment, first and second slit rows 13 in which a plurality of slits 12 parallel to the gripping surface 11 are formed on the side surface of the gripping portion 15 in broken lines, respectively. 14 are provided. Each slit 12 of these slit rows 13 and 14 penetrates the grip portion 15. Further, the first and second slit rows 13 and 14 are preferably longer than the longitudinal direction of the work. In the present embodiment, the first and second slit rows 13 and 14 are provided over substantially the entire length of the gripping surface 11 in the longitudinal direction. Further, as the shape of the slit, a shape in which a round hole having a diameter larger than the slit width is provided at both ends of the slit may be used.

  As described above, by providing the two slit rows 13 and 14 in parallel with the grip surface 11, flexibility can be given to the grip portion 15 of the grip jig 2. As a result, when gripping the workpiece, the gripper 15 corresponding to the portion where the thickness of the workpiece is thick is elastically deformed by the slit 12 being crushed. For this reason, the grip surface 11 can be locally dented and absorb uneven thickness of the work.

  Further, each slit 12 of the first slit row 13 and each slit 12 of the second slit row 14 are shifted in a zigzag manner for each slit row so that both ends 12a of the slit 12 overlap the slits 12 of the other slit rows. Is formed.

  Thus, by forming the slits 12 in a staggered manner, the gripping surface 11 of the gripping jig 2 can be given substantially uniform flexibility along the longitudinal direction. Thus, even a work having uneven thickness can be gripped with a substantially uniform force over the entire length in the longitudinal direction of the work.

  Further, the grip 15 is preferably made of metal, and more preferably made of hard and viscous high-speed steel (SKH) or spring steel (SUP) having high elasticity and high fatigue limit. If these metals are used, flexibility can be easily provided by providing a slit row.

  Next, referring to FIG. 7 (B), when the entire gripping jig 2 is made of SKH or SUP, sufficient flexibility is provided to absorb uneven thickness of the work due to deformation within the elastic limit. A description will be given of an example of the arrangement, dimensions, and shape of the slits 12 and the like suitable for the present invention. FIG. 7B is a partially enlarged view of the first and second slit rows 13 and 14 shown in FIG.

The distance H ₁ between the gripping surface 11 and the first slit row 13, that is, the thickness of the layered portion 17 is preferably in the range of 0.5 to 2 times the width D of the gripping surface 11. For example, when D = 3.5 mm, H ₁ = 5 mm.
Incidentally, the thinner the thickness H ₁ of the layered portion 17, the flexible laminar portion 17 is increased. Further, the smaller the width D (thickness of the grip portion 15) of the grip surface 11, the higher the flexibility of the layer portion 17 becomes. Therefore, a suitable spacing H ₁ between the gripping surface 11 and the first slit rows 13 will depend on the material of the width D and the gripping members of the gripping surface 11.

Further, the interval H ₂ between the first slit row 13 and the second slit row 14, that is, the thickness of the layered portion 18 is preferably in the range of 0.5 to 2 times the width D of the gripping surface 11. For example, when D = 3.5 mm, H ₂ = 4 mm.
Incidentally, the thinner the thickness H ₂ of the layered portion 18, the flexible laminar portion 18 is increased. Also, the flexibility of the layered portion 18 increases as the width D (the thickness of the grip portion 15) of the grip surface 11 decreases. Therefore, a suitable spacing of H ₂ between a first slit row 13 and the second slit rows 14 also depends on the material of the width D and the gripping members of the gripping surface 11.

Further, in the present embodiment, the length S of the slit is preferably in a range of 3 to 5 times the width of the grip surface 11.
Note that the longer the slit length S, the higher the flexibility of the layered portions 17 and 18 along the slit 12. However, if the slit 12 is extremely long, the gripping force on the gripping surface 11 along the slit may be insufficient.

In the present embodiment, in each of the slit rows 13 and 14, the length S of the slit 12 is uniform and the interval T between the slits is uniform. For example, S = 20 mm and T = 10 mm.
In addition, since both ends 12a of each slit 12 overlap with the slits 12 of the other rows, the interval T between the slits is shorter than the slit length S.

The width U of each slit 12 is preferably in the range of 0.1 to 0.5 mm. For example, U = 0.2 mm.
When the gripping surface of the gripping jig is depressed by absorbing uneven thickness, it deforms at most until the slit is completely crushed. For this reason, if the slit width is too large, the gripping jig may be deformed beyond the elastic limit. When the gripping force is generated by using an air cylinder, a coil spring, or the like, the width of the slit may be increased by suppressing the force within elastic deformation. On the other hand, if the slit width is too small, it becomes difficult to sufficiently deform the uneven thickness.

  By arranging the slits 12 having the dimensions described above as described above, the grip portion 15 of the grip member 1 is given sufficient flexibility to absorb uneven thickness of the work due to deformation within the elastic limit. Can be.

  By the way, it is conceivable to provide a rubber layer on the gripping surface 11 in order to absorb uneven thickness of the work. However, the rubber layer also deforms in a direction along the grip surface 11. For this reason, if a rubber layer is provided, the workpiece will shift due to the cutting stress during cutting. Therefore, providing a rubber layer is not appropriate for firmly gripping the work.

  On the other hand, in the gripping jig 2 provided with the slit 12 of the present embodiment, the layered portions 17 and 18 of the gripper 15 are deformed only in a direction substantially perpendicular to the gripping surface 11 like a leaf spring. However, it does not substantially deform in the direction along the grip surface 11. Therefore, according to the holding jig 2 of the present embodiment, the work can be firmly fixed while holding the work with a uniform force in the longitudinal direction of the work.

In each of the embodiments described above, examples in which the present invention is configured under specific conditions have been described. However, the present invention can be variously changed and combined, and the present invention is not limited to this.
For example, in the above-described embodiment, an example is described in which several stacked workpieces are input at one time, but in the present invention, only one stage of the workpiece may be input.
Further, for example, in the above-described embodiment, an example has been described in which the support jig rises after the workpiece is gripped, but the timing at which the support jig rises is not limited to this. For example, even before the work is input, the support jig may rise while the work accommodated in the work magazine is supported on the upper surface of the input jig.

Further, for example, in the above-described embodiment, an example in which the holding unit is provided with two slit rows is described. However, in the present invention, the number of slit rows is not limited to two. For example, three or four or more slit rows may be provided.
Further, for example, in the above-described embodiment, the example of the gripping jig having the elongated gripping surface has been described, but the shape of the gripping surface is not limited to this.
Further, for example, in the above-described embodiment, an example of a metal holding jig has been described. However, in the present invention, the holding jig is not limited to a metal holding jig.

Further, for example, in the above-described embodiment, the slit row is provided only in the upper gripping jig among the pair of gripping jigs configuring the gripping device. However, in the present invention, for example, only the lower side or both upper and lower gripping jigs are provided. May be provided with a slit row.
Also, for example, in the gripping device of the above-described embodiment, an example in which the gripping force supply unit is provided below the lower gripping jig has been described, but the arrangement and mechanism of the gripping force supply unit of the present invention are not limited to this. Not limited. For example, an air cylinder may be provided on the upper gripping jig as the gripping force supply means.

1 is a schematic perspective view showing an embodiment of a work input device according to the present invention. (A) And (B) is a top view which shows the shape and operation | movement of the injection jig by embodiment of this invention. (A)-(D) are schematic sectional drawings which show the operation example of the workpiece | work input apparatus by embodiment of this invention. It is a perspective view explaining cutting using the grip device concerning an embodiment. It is a side view of the grasping device concerning an embodiment. (A) is a side view of the gripping jig according to the embodiment, and (B) is a view of the gripping jig as viewed from the gripping surface side. (A) is an end view of the gripping jig which concerns on embodiment, (B) is an enlarged view of a side surface.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 work 2, 3 gripping jig 4 moving surface 5 loading jig 51, 52, 53 claw 6 backup jig 61, 62, 63 claw 7 work magazine 8 support jig 10 gripping device 11 gripping surface 12 slit 12 a end 13 first slit row 14 Second slit row 15 Gripping portion 16 Supporting portion 17 Layered portion 18 Layered portion 20 Post 30 Rotating head 31 Cutting blade 32 Motor 40 Work 40 Gripping force supply means 50 Processing table 70 High precision linear rail

Claims (19)

A pair of gripping jigs for gripping the work by the gripping parts opposed to each other, a loading jig for pushing the workpiece on a moving surface to a gripping position of the gripping jig, and the workpiece at the gripping position on the opposite side of the loading jig. Having a backup jig to support,
The charging jig has a fork-shaped portion formed of three claws protruding in the direction of pressing the work, and a tip of a center claw of the fork-shaped portion protrudes by a predetermined distance from tips of claws on both sides. A work input device, characterized in that:   2. The work input device according to claim 1, wherein the predetermined distance in the fork-shaped portion of the input jig is equal to or less than half a width of a cutting allowance of the work.   The backup jig has a hawk-shaped part consisting of three nails facing the charging jig, and the tip of the center nail of the three nails of the fork-shaped part is a predetermined distance from the tips of the nails on both sides thereof. The work input device according to claim 1, wherein the work input device protrudes.   4. The work input device according to claim 3, wherein the predetermined distance in the fork-shaped portion of the backup jig is equal to or less than half a width of a cutting allowance of the work.   The work input device according to any one of claims 1 to 4, further comprising a work magazine that stores the works in a stacked state and supplies the stored works onto the moving surface.   At a position directly below the work magazine, and at a position between the three claws of the fork-shaped portion of the input jig, the work supporting the work housed in the work magazine by rising from the moving surface. The work input device according to any one of claims 1 to 5, further comprising a support jig that descends to the moving surface while supporting the work. In at least one of the pair of gripping jigs, the gripping portion has a gripping surface and a plurality of slit rows in which a plurality of slits parallel to the gripping surface are formed in a broken line shape,
These plurality of slit rows are formed such that the slits of one slit row overlap at least partly with the slits of the other slit row,
The said grip surface is comprised so that when the said grip surface grips | works a workpiece | work, the said grip part can be elastically deformed by crushing the slit of the said slit row. The Claim 1 characterized by the above-mentioned. Work input device.   The work input device according to claim 7, wherein the gripping surface has a shape that extends linearly with a constant width.   9. The work input device according to claim 7, wherein an interval between the grip surface and the slit row is in a range of 0.5 to 2 times a width of the grip surface. 10.   The work input device according to any one of claims 7 to 9, wherein an interval between the slit rows is in a range of 0.5 to 2 times a width of the gripping surface.   The work input device according to any one of claims 7 to 10, wherein a length of the slit is in a range of 3 to 5 times a width of the gripping surface.   The work input device according to any one of claims 7 to 11, wherein a width of the slit is in a range of 0.1 to 0.5 mm.   The work input device according to any one of claims 7 to 12, wherein the grip portion is made of metal.   14. The work input device according to claim 13, wherein the metal is high-speed steel (SKH).   14. The work input device according to claim 13, wherein the metal is spring steel (SUP).   The workpiece input device according to any one of claims 1 to 15, further comprising a gripping force supply unit configured to supply a gripping force between the pair of gripping jigs. To a gripping position of a pair of gripping jigs for gripping the work, the work is a charging jig for pushing and moving on a moving surface,
The fork has a fork-shaped portion made up of three claws protruding in the direction of pushing the workpiece, and the tip of the center claw of the fork-shaped portion projects a predetermined distance from the tips of the claws on both sides. Input jig. A gripping device including a pair of gripping jigs for gripping a workpiece by opposed gripping portions, and gripping force supply means for supplying a gripping force between the pair of gripping jigs,
At least one gripping portion of the pair of gripping jigs has a plurality of slit rows in which a plurality of slits parallel to the gripping surface and the gripping surface are formed in a broken line shape,
These plurality of slit rows are formed such that the slits of one slit row overlap at least partly with the slits of the other slit row,
A gripping device characterized in that when the gripping surface grips a workpiece, the slits in the slit row are crushed so that the gripping portion can be elastically deformed. A gripping jig for gripping a workpiece by a gripper,
The grip portion has a grip surface and a plurality of slit rows in which a plurality of slits parallel to the grip surface are formed in a broken line shape,
These plurality of slit rows are formed such that the slits of one slit row overlap at least partly with the slits of the other slit row,
A gripping jig, wherein when the gripping surface grips a workpiece, the grips are elastically deformed by crushing the slits of the slit row.

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