JP6739260B2 - Punching device - Google Patents

Description

The present invention relates to a punching device.

There is known a punching device that punches a work such as a printed circuit board with a drill. For example, in Patent Document 1, a table, a spindle capable of rotating and elevating while holding a tool for processing a printed board placed on the table, and a presser for pressing the printed board against the table when processing the printed board. And a punching device comprising the device.

2. Description of the Related Art As a punching device, there is a punching device that punches a workpiece with a receiving member pressing the workpiece from the side opposite to the drill toward the drill side. A hole is drilled in the receiving member together with the work during the first use. A drill is inserted into the hole of the receiving member opened at the first use every time the second and subsequent holes are drilled.

Japanese Patent No. 5138273

However, in the above-mentioned conventional technique, the drill is repeatedly inserted into the hole of the receiving member by the drilling process, and the hole diameter of the receiving member gradually increases due to the slight deviation of the drill. When the hole diameter of the receiving member is increased, a gap is created between the hole of the receiving member and the drill when the work is opened. When the drill penetrates the work, a part of the material forming the work is extruded into the gap between the hole of the receiving member and the drill. Therefore, burrs are generated at the opening edge of the hole formed in the work so as to project toward the receiving member side.

Therefore, there has been developed a hole punching device that sandwiches a sheet-shaped interposing member between a receiving member and a work when punching a work. In this device, the interposition member is formed in a band shape and is held in a state of being wound around a reel, for example. Then, the unused portion of the interposing member pulled out from the reel is sandwiched between the receiving member and the work for each drilling process. According to the drilling method using this device, the opening edge of the work on the receiving member side can be covered with the interposition member. Thereby, when the drill penetrates the work, it is possible to prevent the material forming the work from coming into contact with the interposition member and being pushed out from the opening edge of the work on the receiving member side into the gap between the hole of the receiving member and the drill. Therefore, it is possible to prevent burrs from being generated at the opening edge of the workpiece on the receiving member side when the workpiece is punched.

By the way, when pressing the work, the receiving member moves between a position where the work is pressed and a position where it is separated from the work. At the time of making a new hole in the work, the interposing member is pulled out from the reel by a predetermined amount, the used portion of the interposing member is sent out from under the drill, and then the receiving member is moved toward the work. When the receiving member moves toward the work, the intervening member may be pulled by the receiving member, and the used portion of the intervening member may return between the work and the receiving member. Further, when the receiving member is separated from the work, the intervening member becomes loose. As a result, when pulling out the intervening member from the reel, it is not possible to accurately pull out the intervening member by a predetermined amount, and there is a possibility that the used portion of the interposing member may be arranged again between the work and the receiving member. Therefore, it may not be possible to prevent the occurrence of burrs on the work.

Therefore, the present invention provides a punching device capable of reliably preventing the formation of burrs.

The drilling device of the present invention is a drill for drilling a hole in a work, a receiving member that is arranged so as to face the tip of the drill and that presses the work toward the drill when the hole is drilled in the work, and A belt-shaped interposing member that is sandwiched between the receiving member and the work when a hole is opened, and the interposing member is held in a continuously pullable state, and the interposing member is provided between the receiving member and the work. An intervening member supply section that supplies the intervening member to the interposing member supply section, and an interposing member drawing section that pulls out the interposing member from the interposing member supplying section, the intervening member drawing section being provided on the downstream side in the drawing direction of the interposing member rather than between the receiving member and the work. The interposing member withdrawing portion is provided on the first chuck portion capable of interposing the interposing member, and downstream of the first chuck portion in the pull-out direction of the interposing member, and interposing the interposing member. A second chuck part that is movable by a predetermined amount to the downstream side in the drawing direction of the interposing member, and the second chuck part faces the downstream side in the drawing direction of the interposing member with respect to the second chuck part. Te have a pressurizing means for applying a predetermined load, said second chuck portion is held between the intermediate member, the intermediate member toward the upstream side in the drawing direction of the intermediate member against the load by the pressing means It is characterized in that the work is perforated with a load applied to the workpiece .

According to the present invention, when the receiving member moves toward the work, the interposing member can be pulled toward the upstream side while applying the load to the second chuck portion by the pressing means. As a result, the intervening member is pulled back by more than a desired amount due to the inertia when the interposing member is pulled by the receiving member, and the used portion of the interposing member sent out between the receiving member and the work is again fed to the receiving member and the work. You can prevent it from returning in between. Further, when the receiving member separates from the work, the interposing member can be moved to the downstream side by applying a load to the second chuck portion by the pressing means. As a result, the interposition member pulled by the receiving member and pulled back can be moved to the downstream side again, so that the interposition member can be prevented from loosening. Therefore, the interposition member can be accurately pulled out from the interposition member drawing portion by a predetermined amount, so that the used portion of the interposition member can be prevented from being arranged again between the work and the receiving member. Therefore, the occurrence of burrs can be reliably prevented.

The drilling device of the present invention is a drill for drilling a hole in a work, a receiving member that is arranged so as to face the tip of the drill and that presses the work toward the drill when the hole is drilled in the work, and A belt-shaped interposing member that is sandwiched between the receiving member and the work when a hole is opened, and the interposing member is held in a continuously pullable state, and the interposing member is provided between the receiving member and the work. An intervening member supply section that supplies the intervening member to the interposing member supply section, and an interposing member drawing section that pulls out the interposing member from the interposing member supplying section, the intervening member drawing section being provided on the downstream side in the drawing direction of the interposing member rather than between the receiving member and the work. The interposing member withdrawing portion is provided on the first chuck portion capable of interposing the interposing member, and downstream of the first chuck portion in the pull-out direction of the interposing member, and interposing the interposing member. A second chuck part that is movable by a predetermined amount to the downstream side in the drawing direction of the interposing member, and the second chuck part faces the downstream side in the drawing direction of the interposing member with respect to the second chuck part. It is characterized by having a pressurizing means which is a spring for applying a predetermined load .

According to the present invention, when the receiving member moves toward the work, the interposing member can be pulled toward the upstream side while applying the load to the second chuck portion by the pressing means. As a result, the intervening member is pulled back by more than the desired amount due to the inertia when the interposing member is pulled by the receiving member, and the used portion of the interposing member sent out between the receiving member and the work is again fed to the receiving member and the work. You can prevent it from returning in between. Further, when the receiving member separates from the work, the interposing member can be moved to the downstream side by applying a load to the second chuck portion by the pressing means. As a result, the interposition member pulled by the receiving member and pulled back can be moved to the downstream side again, so that the interposition member can be prevented from loosening. Therefore, the interposition member can be accurately pulled out from the interposition member drawing portion by a predetermined amount, so that the used portion of the interposition member can be prevented from being arranged again between the work and the receiving member. Therefore, the occurrence of burrs can be reliably prevented. Further, it is possible to easily form the pressurizing means that applies a predetermined load to the interposition member.

In the punching device, it is desirable that the first chuck portion and the second chuck portion be driven by compressed air.

According to the present invention, it is possible to reduce the component cost of the drive source of the chuck unit as compared with the configuration in which the chuck unit is driven by a motor. Therefore, the punching device can be provided at low cost.

In the above punching device, the second chuck unit, after the predetermined amount of movement to the downstream side of the drawing direction of the intermediate member, and moving the second chuck portion on the downstream side of the drawing direction of the intermediate member It is desirable to release the compressed air.

According to the present invention, the supply of compressed air that drives the movement of the second chuck portion in the pull-out direction is released, so that a predetermined load is applied to the second chuck portion by the pressurizing means while sandwiching the interposition member. You can

In the above hole punching device, the interposition member supply unit includes a reel around which the interposition member is wound, and a brake mechanism capable of restricting rotation of the reel, and the brake mechanism includes the second chuck unit. It is preferable that the reel regulate the rotation of the reel after the intervening member is clamped and moved by the predetermined amount.

According to the present invention, the brake mechanism restricts the rotation of the reel around which the intervening member is wound after the second chuck portion holds the intervening member and moves by a predetermined amount, so that the receiving member moves toward the work. In doing so, it is possible to prevent the intervening member from being pulled out from the reel by being pulled by the receiving member. With this, it is possible to prevent the intervening member from being unintentionally pulled out from the intervening member supply section, so that the interposing member can be used without waste.

In the hole punching device, it is preferable that the interposition member supply unit includes a damper that imparts rotation resistance to the reel.

According to the present invention, when the unused interposition member is pulled out from the reel, it is possible to prevent the reel from idling. Therefore, it is possible to prevent the intervening member from being unintentionally pulled out from the intervening member supply section, so that the interposing member can be used without waste.

In the above punching device, it is desirable that the brake mechanism be driven by compressed air.

According to the present invention, it is possible to improve the braking efficiency with respect to the applied power, as compared with the configuration in which the brake mechanism is an electromagnetic brake. Therefore, it is possible to provide the punching device capable of reducing the power consumption.

According to the present invention, when the receiving member moves toward the work, the interposing member can be pulled toward the upstream side while applying the load to the second chuck portion by the pressing means. As a result, the intervening member is pulled back by more than a desired amount due to the inertia when the interposing member is pulled by the receiving member, and the used portion of the interposing member sent out between the receiving member and the work is again fed to the receiving member and the work. You can prevent it from returning in between. Further, when the receiving member separates from the work, the interposing member can be moved to the downstream side by applying a load to the second chuck portion by the pressing means. As a result, the interposition member pulled by the receiving member and pulled back can be moved to the downstream side again, so that the interposition member can be prevented from loosening. Therefore, the interposition member can be accurately pulled out from the interposition member drawing portion by a predetermined amount, so that the used portion of the interposition member can be prevented from being arranged again between the work and the receiving member. Therefore, the occurrence of burrs can be reliably prevented.

It is a perspective view of the punching device of an embodiment. It is a perspective view showing a part composition of a punching device of an embodiment. It is a front view showing a part composition of a punching device of an embodiment. It is a side view of the interposition member supply part concerning an embodiment. It is a top view of the interposition member supply part concerning an embodiment. It is a front view of the interposition member drawer part concerning an embodiment. It is a side view of the interposition member drawer part concerning an embodiment. It is operation|movement explanatory drawing of the punching device of embodiment, Comprising: It is a perspective view of a punching device. It is operation|movement explanatory drawing of the punching device of embodiment, Comprising: It is a perspective view of a punching device. It is an explanatory view of operation of a punching device of an embodiment, and is a front view of the important section of a punching device. It is operation|movement explanatory drawing of the punching device of embodiment, Comprising: It is a perspective view of a punching device. It is an explanatory view of operation of a punching device of an embodiment, and is a front view of the important section of a punching device. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part. It is an explanatory view of operation of an interposition member drawer part concerning an embodiment, and is a front view of an interposition member drawer part.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a punching device according to an embodiment.
As shown in FIG. 1, the drilling device 1 is a device that moves a drill in the vertical direction to drill a workpiece W such as a printed circuit board. The punching device 1 includes a pair of processing units 11 that punches a work W, a pair of imaging units 12 that picks up an image of the work W, and a rectangular parallelepiped housing 3 that houses the processing unit 11 and the imaging unit 12. A lower pedestal 5 and a pair of upper pedestals 7 arranged in the housing 3, and a work W placed on the top and movable with respect to the housing 3 by a transport mechanism (not shown). The table 9 is provided. In addition, in the present embodiment, the movement direction of the work table 9 by the transport mechanism is set to one horizontal direction. In the following description, the movement direction of the work table 9 is referred to as the X direction, the horizontal direction orthogonal to the X direction is referred to as the Y direction, and the vertical direction orthogonal to the X direction and the Y direction is referred to as the Z direction. In addition, the white arrow shown in FIG. 1 is the fixed position of the worker, and the worker stands in the direction (X direction) in which the white arrow points and carries in and out the work W. In the following description, in the X direction, the fixed position side of the worker with respect to the punching device 1 is referred to as the front side, and the opposite side is referred to as the back side.

FIG. 2 is a perspective view showing a partial configuration of the punching device according to the embodiment. FIG. 3 is a front view showing a partial configuration of the punching device according to the embodiment.
The lower mount 5 is fixed to the housing 3 and is a non-moving part of the punching device 1. As shown in FIG. 2, the lower mount 5 is formed in a rectangular plate shape along the XY plane. A rectangular through hole 5a is formed in the center of the lower mount 5. A linear guide 13 parallel to the Y direction is attached to the upper part of the lower mount 5. On the upper part of the linear guide 13, a pair of movable mounts 15 are supported side by side in the Y direction so as to be slidable in the Y direction. A pair of ball screws 17 are attached to the upper part of the lower mount 5 in parallel with the linear guide 13. The pair of ball screws 17 move the movable mounts 15 in the Y direction, and are arranged between the lower mount 5 and each movable mount 15. Each ball screw 17 is driven by a motor 19.

Straight guides 21 parallel to the X direction are attached to the upper portions of the respective movable mounts 15. A support frame 51 (support portion), which will be described later, is supported on each of the linear guides 21 in a state of being slidable in the X direction. Further, as shown in FIG. 3, ball screws 23 (see FIG. 3) are attached to the upper portions of the respective movable mounts 15 in parallel with the linear guides 21. The ball screws 23 move the support mounts 51 in the X direction, respectively, and are arranged between the movable mounts 15 and the support mounts 51. Each ball screw 23 is driven by a motor 25.

As shown in FIG. 1, the pair of upper mounts 7 are arranged above the lower mounts 5, respectively. The pair of upper mounts 7 are fixed to the housing 3 and are immovable parts of the punching device 1. Each of the upper mounts 7 is formed in a rectangular plate shape along the XY plane, and is arranged in parallel in the Y direction at intervals. The pair of upper mounts 7 are formed symmetrically with respect to the ZX plane. Each upper pedestal 7 is formed with a cutout portion 7a which is cut out in a rectangular shape from the inner edge in the Y direction toward the outside. The cutout portion 7a is formed at the same position as the through hole 5a (see FIG. 2) of the lower mount 5 in the X direction.

On the upper side of the pair of upper pedestals 7 of the housing 3, a window portion 3a that is open to the front side in the X direction is formed. The window 3a is formed over almost the entire Y direction. The window 3a exposes a part of the processing unit 11 housed inside the housing 3 to the outside. Thereby, the operator can perform various operations on the processing unit 11 through the window 3a. As shown, the window 3a is normally closed by the front panel 3b.

The work table 9 is arranged so as to straddle a pair of upper mounts 7. The work table 9 is formed in a rectangular shape according to the shape of the work W to be placed. At the center of the work table 9 in the Y direction, there is formed a suction portion 9a having a plurality of suction holes for vacuum chucking the placed work W. Further, through-holes 9b for boring the work W are formed at four corners of the work table 9 and at the center in the X direction at both ends in the Y direction. The through hole 9b is formed in the work W placed on the work table 9 so as to correspond to a preset drilling position. The work table 9 moves in the X direction through the window 3a of the housing 3. When the window 3a is closed by the front panel 3b, the work table 9 moves in the X direction through the gap between the front panel 3b and the pair of upper mounts 7.

The pair of processing units 11 are provided on both sides of the punching device 1 in the Y direction. Since the pair of processing units 11 are formed symmetrically with respect to each other with respect to the ZX plane, only the processing unit 11 on the left side when viewed from the worker standing at a fixed position may be illustrated and described in the following description. ..

As shown in FIG. 1 and FIG. 2, the processing unit 11 is arranged on the opposite side of the first drill 31 with the first drill 31 and the second drill 32 arranged on the upper side of the work table 9 and the work table 9 interposed therebetween. First pressing unit 41, the second pressing unit 42 arranged on the opposite side of the second drill 32 with the work table 9 interposed therebetween, the first drill 31, the second drill 32, the first pressing unit 41 and the second pressing unit 41. The support frame 51 that supports the two-pressing unit 42 is provided.

The support pedestal 51 is arranged inside the cutout portion 7 a of the upper pedestal 7. The support base 51 is formed in a U shape having a bottom wall 52, a side wall 53, and an upper wall 54, and opens toward the inside in the Y direction when viewed from the X direction. The support base 51 is arranged so as to avoid contact with the work table 9 movable in the X direction. The upper wall 54 of the support frame 51 is arranged above the work table 9. The bottom wall 52 of the support base 51 is arranged below the work table 9 and is supported on the upper portion of the above-described linear guide 21. As a result, the support base 51 is movable in the XY directions with respect to the lower base 5.

As shown in FIG. 1, the first drill 31 is attached to the end of the upper wall 54 of the support frame 51 on the inner side in the Y direction. The first drill 31 includes a spindle 33, a spindle moving mechanism (not shown) that moves the spindle 33 in the Z direction with respect to the support frame 51, and a drill bit 34 (see FIG. 3) held at the lower end of the spindle 33. And a pressing member 35 that covers the drill bit 34. The spindle moving mechanism is provided between the spindle 33 and the support base 51. The pressing member 35 is formed in a box shape and is slidably attached to the lower end of the spindle 33. A through hole coaxial with the drill bit 34 is formed at the lower end of the pressing member 35. When the spindle moving mechanism moves the spindle 33 downward while the drill bit 34 is rotationally driven, the pressing member 35 presses the work W from the upper side, and the drill bit 34 moves downward from the through hole of the pressing member 35. A hole is made in the work W that projects toward the work W and is placed on the work table 9.

The second drill 32 is mounted on the upper wall 54 of the support frame 51 side by side with the first drill 31 outside the first drill 31 in the Y direction. Like the first drill 31, the second drill 32 includes a spindle 33, a spindle moving mechanism (not shown), a drill bit 34 (see FIG. 3), and a holding member 35. In addition, by providing the second drill 32 with the drill bit 34 having a diameter different from that of the drill bit 34 included in the first drill 31, it is possible to form holes having different hole diameters by one processing unit 11.

As shown in FIGS. 2 and 3, the first pressing unit 41 is attached to the upper part of the bottom wall 52 of the support frame 51. The first pressing unit 41 includes a base portion 43, a moving mechanism (not shown) that moves the base portion 43 along the Z direction, and a first bush 44 (first receiving member) detachably attached to an upper portion of the base portion 43. And are equipped with. The moving mechanism is, for example, an air cylinder or the like, and is provided between the base portion 43 and the bottom wall 52 of the support frame 51. The first bush 44 is formed in a rectangular parallelepiped shape from, for example, melamine resin or glass epoxy, and is formed in a square shape larger than the cross-sectional shape of the drill bit 34 of the first drill 31 when viewed from the Z direction. The first bush 44 is arranged so as to face the tip (lower end) of the drill bit 34 of the first drill 31, and is fitted to the upper end of the base 43. The first bush 44 presses the work W toward the first drill 31 when the work W is drilled by the first drill 31.

The second pressing unit 42 is attached to the outer side of the first pressing unit 41 in the Y direction in the upper part of the bottom wall of the support frame 51 along with the first pressing unit 41. The second pressing unit 42 is formed similarly to the first pressing unit 41, and includes a base portion 43, a moving mechanism (not shown), and a second bush 45 (second receiving member). The second bush 45 is formed in a square shape larger than the cross-sectional shape of the drill bit 34 of the second drill 32 when viewed from the Z direction. The second bush 45 is arranged so as to face the tip (lower end) of the drill bit 34 of the second drill 32, and is fitted to the upper end of the base 43. The second bush 45 presses the work W toward the second drill 32 when the work W is drilled by the second drill 32.

Further, as shown in FIG. 1, in the processing unit 11, the belt-shaped intervening member S, the intervening member supplying portion 60 that holds the interposing member S, and the interposing member extracting portion 80 that draws the interposing member S from the interposing member supplying portion 60. And.
The interposition member S is sandwiched between the bushes 44 and 45 (see FIG. 3) and the work W when the work W is opened. The interposition member S is a film formed in a band shape from a resin material such as PET (Polyethylene terephthalate). The thickness of the interposition member S is, for example, about 100 μm.

FIG. 4 is a side view of the interposition member supply unit according to the embodiment. FIG. 5 is a plan view of the interposition member supply unit according to the embodiment.
The interposition member supply unit 60 holds the interposition member S in a continuously drawable state. The interposition member supply unit 60 is arranged on the window 3a side (front side in the X direction) of the housing 3 with respect to the support base 51 above the work table 9. As shown in FIG. 1, FIG. 4 and FIG. 5, the interposition member supply unit 60 includes a reel 61 around which the interposition member S is wound, a holding unit 63 that rotatably holds the reel 61, and a rotation of the reel 61. It includes a brake mechanism 65 that can be regulated, a damper 67 that imparts rotational resistance to the reel 61, and a detection unit 69 that can detect the presence or absence of the intervening member S.

The reel 61 is arranged at a position exposed to the outside through the window 3a of the housing 3. The reel 61 is rotatably provided around an axis parallel to the X direction. A pulley 71 is provided at the end of the reel 61 on the back side in the X direction.

The holding portion 63 is fixed to the housing 3. The holding portion 63 includes a rectangular plate-shaped upper plate portion 63a attached to the housing 3, a front plate portion 63b that hangs downward from an edge of the upper plate portion 63a on the front side in the X direction, and a front plate portion. It has a lower plate portion 63c extending from the lower end edge of 63b toward the front side in the X direction, and an inner plate portion 63d hanging downward from the end edge of the upper plate portion 63a on the rear side in the X direction. The lower plate portion 63c rotatably supports the shaft of the reel 61. A shaft 73 is rotatably supported by the front plate portion 63b and the rear plate portion 63d. The shaft 73 is provided parallel to the X direction. Both ends of the shaft 73 project from the front plate portion 63b and the back plate portion 63d, respectively. A pulley 75 is provided at the front end of the shaft 73 in the X direction. The pulley 75 is connected to a pulley 71 provided on the shaft of the reel 61 via a timing belt 77. As a result, the shaft 73 rotates as the reel 61 rotates.

The brake mechanism 65 is attached between the front plate portion 63b and the back plate portion 63d of the holding portion 63. The brake mechanism 65 is an air brake driven by compressed air, and is capable of restricting the rotation of the shaft 73. As a result, the brake mechanism 65 can regulate the rotation of the reel 61.

The damper 67 is attached to the back side of the back plate portion 63d of the holding portion 63 in the X direction. The damper 67 is a rotary damper, and is connected to the end of the shaft 73 on the back side in the X direction. The damper 67 imparts rotation resistance to the shaft 73. As a result, the damper 67 imparts rotation resistance to the reel 61.
The detection unit 69 is attached to the lower portion of the lower plate portion 63c of the holding unit 63. The detection unit 69 is a fiber sensor and detects the presence or absence of the interposition member S pulled out from the reel 61.

As shown in FIG. 1, the interposing member S wound around the reel 61 is pulled out downward, and then wraps around the first roller 79a and the second roller 79b provided in the holding portion 63 to move in the X direction. It is folded back toward the back and the bottom. Thereafter, the intervening member S goes around the third roller 79c, the fourth roller 79d, and the fifth roller 79e provided on the upper mount 7 at substantially the same position as the lower surface of the work table 9 in the Z direction, and moves inward in the Y direction, in the X direction. It is folded back toward the inner side in the direction and the inner side in the Y direction. The intervening member S folded back by the fifth roller 79e extends along the lower surface of the work table 9.

FIG. 6 is a front view of the interposition member extraction portion according to the embodiment. FIG. 7 is a side view of the interposition member extraction portion according to the embodiment.
The interposition member lead-out portion 80 is arranged in the through hole 5a of the lower frame 5 (see FIG. 2). As shown in FIGS. 6 and 7, the interposition member pull-out portion 80 includes a base portion 81 attached to the lower pedestal 5, a guide cylinder 83 supported by the upper pedestal 7, and a first portion supported by the base portion 81. The chuck portion 85 and the second chuck portion 87 are included.

The guide cylinder 83 extends from the upper end having an opening facing the lower surface of the work table 9 so as to incline inward in the Y direction as it goes downward, and further extends downward. An opening that opens downward is formed at the lower end of the guide cylinder 83. The guide cylinder 83 receives the intervening member S extending along the lower surface of the work table 9 at the upper end opening, and discharges the intervening member S entering the inside from the lower end opening.

The first chuck portion 85 is attached to the front side of the base portion 81 in the X direction. The first chuck portion 85 is provided below the lower end of the guide cylinder 83. The first chuck portion 85 is provided so as to be able to sandwich the intervening member S drawn downward from the opening at the lower end of the guide cylinder 83. The first chuck portion 85 includes a block-shaped first chuck body portion 85a that sandwiches the interposed member S from both sides in the Y direction, and a first chuck body portion 85a that extends downward from the first chuck body portion 85a. 85a and an extension piece 85b that holds the interposition member S therebetween. The first chuck portion 85 is driven by compressed air. That is, the first chuck body portion 85a clamps the interposition member S by being supplied with compressed air, and releases the interposition member S by releasing the supplied compressed air.

The second chuck portion 87 is attached to the front side of the base portion 81 in the X direction. The second chuck portion 87 is provided below the first chuck portion 85. The second chuck portion 87 is provided so as to be able to sandwich the intervening member S drawn downward from the opening of the lower end portion of the guide cylinder 83 below the first chuck body portion 85a. The second chuck portion 87 includes a block-shaped second chuck body portion 87a that sandwiches the interposed member S from both sides in the Y direction, and a moving mechanism 89 that movably supports the second chuck body portion 87a in the Z direction. A magnet sensor 98 for detecting the position of the second chuck main body 87a and an intervening member sensor 99 for detecting the presence or absence of the intervening member S below the second chuck main body 87a are provided.

The moving mechanism 89 is provided on the front side of the base portion 81 in the X direction. The moving mechanism 89 is fixed to the shaft 91 and a shaft 93 supported by the cylinder 91 so as to be movable in the Z direction, and also supports the second chuck body 87a. A pedestal portion 95 and a spring 97 (pressurizing means) inserted through the shaft 93 are provided.

The cylinder 91 is an air cylinder. A restricting portion 91a that protrudes inward in the Y direction is formed on the top of the cylinder 91. A stopper 95a, which will be described later, formed on the pedestal portion 95 can come into contact with the regulating portion 91a from below.

The shaft 93 extends along the Z direction and is inserted into the cylinder 91. Both ends of the shaft 93 in the Z direction project from the cylinder 91. A nut 93a is screwed onto the lower end of the shaft 93.

The pedestal portion 95 is arranged on the front side of the cylinder 91 in the X direction. The upper end of the pedestal portion 95 is fixed to the upper end of the shaft 93. As a result, the pedestal portion 95 moves in the Z direction along with the movement of the shaft 93 in the Z direction together with the second chuck body portion 87a supported by the pedestal portion 95. A stopper 95a is provided so as to project inside the pedestal portion 95 in the Y direction. The stopper 95a comes into contact with the restricting portion 91a of the cylinder 91 from below when the pedestal portion 95 moves upward. Thereby, the upper end of the movement range of the pedestal portion 95 in the Z direction is defined.

The spring 97 is a coil spring (spring) and is inserted into the lower portion of the shaft 93 in a compressed state. The spring 97 is arranged between the lower end of the cylinder 91 and the nut 93a screwed to the lower end of the shaft 93. The spring 97 biases the nut 93a in a direction away from the cylinder 91 (that is, downward).

The magnet sensor 98 is arranged on the outer side in the Y direction. The magnet sensor 98 is provided so as to detect the position of the pedestal portion 95 with respect to the cylinder 91 in the Z direction. As a result, the magnet sensor 98 detects the position of the second chuck body 87a supported by the pedestal 95.

The interposition member sensor 99 is attached to the lower side of the second chuck body 87a. The intervening member sensor 99 is a fiber sensor and detects the presence or absence of the interposing member S located downstream of the second chuck body 87a in the pull-out direction of the interposing member S.

The second chuck portion 87 is driven by compressed air. That is, the second chuck body 87a and the cylinder 91 are driven by compressed air supplied from different systems. The second chuck main body 87a clamps the interposition member S by being supplied with compressed air, and releases the interposition member S by releasing the supplied compressed air. On the other hand, two systems of compressed air can be supplied to the cylinder 91. Specifically, the cylinder 91 is supplied with compressed air from one system and releases the compressed air supplied from the other system to move the shaft 93 upward. Further, the cylinder 91 releases the compressed air supplied from one system and also supplies the compressed air from the other system to move the shaft 93 downward.

The processing unit 11 described above can be perforated only in a preset area in the X direction, and the intervening member S is arranged along the lower surface of the work table 9 in that area. That is, the intervening member S travels in an immovable position in the punching device 1 and moves the punching portion of the work W to that position to perform punching. The rough adjustment of the hole forming position of the work W in the X direction is performed by moving the work table 9. Fine adjustment of the drilling position of the work W in the X direction and adjustment of the drilling position of the work W in the Y direction are performed by moving the first drill 31 or the second drill 32.

As shown in FIG. 3, the pair of imaging units 12 are provided on both sides of the punching device 1 in the Y direction, like the pair of processing units 11. The pair of imaging units 12 are formed in plane symmetry with respect to the ZX plane.

As shown in FIG. 2, each imaging unit 12 has an X-ray irradiator 57 and an X-ray camera 59. The X-ray irradiator 57 is attached to the upper wall 54 of the support frame 51 on the back side in the X direction of the first drill 31 and the second drill 32. The X-ray irradiator 57 irradiates the work W with X-rays. The X-ray camera 59 is attached to the bottom wall 52 of the support frame 51. The X-ray camera 59 captures a transmission image of X-rays applied to the work W.

The operation of the punching device 1 of this embodiment will be described below.
First, the drilling operation with a drill will be described with reference to FIGS. 8 to 12. In the following description, a case will be described in which the processing units 11 on both sides in the Y direction simultaneously make holes in the work W. Further, in the following description, a case will be described in which holes are formed at both corners on the back side of the work W in the X direction by the first drill 31, but also when holes are formed at both corners of the work W on the front side in the X direction. The same applies to the case where the second drill 32 is used to open a hole.

8 to 12 are operation explanatory views of the punching device according to the embodiment. 8, 9 and 11 are perspective views of the punching device 1. 10 and 12 are front views of the main part of the punching device 1.
First, as shown in FIG. 8, the work W is placed on the work table 9 so that the position where the hole of the work W is opened enters each through hole 9 b of the work table 9 when viewed from the Z direction. Next, the work table 9 is moved so that the through hole 9b formed on the back side of the work table 9 in the X direction overlaps with the interposition member S when viewed from the Z direction. Further, the support base 51 is moved so that the imaging unit 12 overlaps the through hole 9b when viewed from the Z direction. Next, the image of the work W is picked up by the image pickup unit 12, and the XY coordinates of the position where the hole is to be punched are acquired.

Next, as shown in FIG. 9, the support base 51 is moved and the first drill 31 is moved toward the acquired XY coordinates.
Next, as shown in FIG. 10, the base 43 of the first pressing unit 41 is moved upward by the moving mechanism of the first pressing unit 41. At this time, in the interposition member supply unit 60, the rotation of the reel 61 is restricted by the brake mechanism 65. Then, the first bush 44 attached to the upper portion of the base portion 43 is put into the through hole 9b of the work table 9. Then, the interposition member S arranged along the lower surface of the work table 9 is pulled into the through hole 9b by being pulled by the first bush 44. Then, the first bush 44 is brought into contact with the work W with the interposition member S interposed therebetween.

Next, as shown in FIGS. 11 and 12, a hole is formed in the work W by the first drill 31. Specifically, while rotating the drill bit 34 by the spindle 33, the spindle 33 is moved downward by the spindle moving mechanism (not shown). Thus, the work W can be pressed upward by the first bush 44 that comes into contact with the work W from below, and the work W can be punched from above by the drill bit 34.

Next, the operation of pulling out the interposition member S by the interposition member pulling portion 80 will be described with reference to FIGS. 13 to 18.
FIG. 13 to FIG. 18 are operation explanatory diagrams of the interposition member drawing section according to the embodiment, and are front views of the interposition member drawing section.

The operation of pulling out the interposing member S by the interposing member pulling-out portion 80 is performed in a state where the bushes 44 and 45 are not pressing the work W after the above-described hole making operation.
First, in a state in which compressed air is supplied to the second chuck body portion 87a and the interposition member S is sandwiched by the second chuck body portion 87a, compressed air is supplied to the first chuck body portion 85a and the first chuck body portion 85a. The interposition member S is sandwiched by. Next, as shown in FIG. 13, the compressed air supplied to the second chuck body 87a is released to release the sandwiching of the interposition member S by the second chuck body 87a.

Next, as shown in FIG. 14, while supplying compressed air from one system to the cylinder 91 and releasing compressed air supplied from the other system to the cylinder 91, the second chuck body portion 87a is first moved. It is moved toward the chuck body 85a side (upper side). Here, the above-mentioned stopper 95a comes into contact with the regulating portion 91a of the cylinder 91 to regulate the upward movement of the second chuck body portion 87a.
Next, as shown in FIG. 15, compressed air is supplied to the second chuck main body 87a to sandwich the interposition member S by the second chuck main body 87a. As a result, the second chuck body 87a can always sandwich the intervening member S on the upper side by a predetermined amount. That is, the feed pitch of the interposition member S can be adjusted by adjusting the contact position between the stopper 95a provided on the pedestal portion 95 and the restriction portion 91a provided on the cylinder 91. In the present embodiment, the feed pitch of the interposition member S is adjusted by moving the position of the restricting portion 91a provided on the cylinder 91 in the Z direction, but even if the position of the stopper 95a is moved and adjusted. Good.

Next, as shown in FIG. 16, the compressed air supplied to the first chuck body portion 85a is released, and the sandwiching of the interposition member S by the first chuck body portion 85a is released.
Next, the air brake of the brake mechanism 65 of the interposition member supply unit 60 is released, and the rotation of the reel 61 is allowed to allow the interposition member S to be pulled out. As shown in FIG. The compressed air supplied from the above is released, and the compressed air is supplied from the other system to the cylinder 91 to move the second chuck body 87a downward by a predetermined amount. As a result, the interposition member S sandwiched by the second chuck body 87a can be moved downward, and the interposition member S can be pulled out from the reel 61 by a predetermined amount. At this time, since the damper 67 in the interposition member supply unit 60 imparts rotational resistance to the reel 61, it is possible to prevent the reel 61 from idling and the interposition member S from loosening. After that, when the magnet sensor 98 detects the movement of the second chuck body portion 87a by a predetermined amount, the air brake of the brake mechanism 65 is operated to regulate the rotation of the reel 61 and stop the second chuck body portion 87a. Here, the compressed air supplied from the other system to the cylinder 91 is released, and the second chuck body portion 87a is urged downward by the spring 97 so that the second chuck body portion 87a is interposed. A predetermined load is applied toward the downstream side in the direction in which the member S is pulled out.

Here, when the first bush 44 is inserted into the through hole 9b of the work table 9 as shown in FIG. 10 after the intervention member S is pulled out by a predetermined amount, the intervention member S is pulled by the first bush 44. At this time, the interposition member S is sandwiched by the second chuck main body 87a at the interposition member drawing portion 80, and a predetermined load is applied by the spring 97 toward the downstream side in the drawing direction. The rotation of the reel 61 is restricted by the brake mechanism 65. Therefore, when the interposition member S is pulled by the first bush 44, as shown in FIG. 18, the second chuck body portion 87a moves together with the interposition member S toward the upstream side in the pull-out direction against the load of the spring 97. To move. Then, when the first bush 44 retracts to the lower side after opening the hole, as shown in FIG. 17, the second chuck main body 87a moves together with the intervening member S toward the downstream side in the pull-out direction by the load of the spring 97. .. After that, when the punching operation is repeated, similarly, compressed air is supplied to the first chuck body portion 85a by interposing the interposed member S with the second chuck body portion 87a so that the first chuck body portion 85a intervenes. The member S is sandwiched, and as shown in FIG. 13, the compressed air supplied to the second chuck body 87a is released to release the sandwiching of the interposition member S by the second chuck body 87a.

As described above, according to the present embodiment, when the bushes 44 and 45 move toward the workpiece W, the springs 97 apply a load to the second chuck portion 87 and the bushes 44 and 45 move the intervening member S to the upstream side. Can be pulled towards. As a result, the used portion of the interposition member S sent out from between the bushes 44, 45 and the work W is pulled back by more than a desired amount due to the inertia when the interposition member S is pulled by the bushes 44, 45. Can be prevented from returning again between the bushes 44, 45 and the work W. Further, when the bushes 44, 45 are separated from the work W, the interposition member S can be moved to the downstream side by applying a load to the second chuck portion 87 by the spring 97. As a result, the interposition member S pulled by the bushes 44, 45 and pulled back can be moved to the downstream side again, so that the interposition member S can be prevented from loosening. Therefore, since the interposition member S can be accurately pulled out from the interposition member drawing portion 80 by a predetermined amount, the used portion of the interposition member S is prevented from being arranged again between the work W and the bushes 44, 45. it can. Therefore, the occurrence of burrs can be reliably prevented.

Further, since the first chuck portion 85 and the second chuck portion 87 are driven by compressed air, the first chuck portion 85 is different from the configuration in which the first chuck portion 85 and the second chuck portion 87 are driven by a motor. And the cost of components of the drive source of the second chuck portion 87 can be reduced. Therefore, the punching device 1 can be provided at low cost.

In addition, the second chuck portion 87 releases the compressed air that has moved the second chuck portion 87 to the downstream side in the pull-out direction of the interposing member S after moving by the predetermined amount to the downstream side in the pull-out direction of the interposing member S. A predetermined load can be applied to the second chuck portion 87 by the spring 97 while sandwiching the interposition member S.

Further, since the brake mechanism 65 restricts the rotation of the reel 61 around which the intervening member S is wound after the second chuck portion 87 holds the intervening member S and moves by a predetermined amount, the bushes 44 and 45 allow the work W to rotate. It is possible to prevent the interposition member S from being pulled out from the reel 61 by being pulled by the bushes 44, 45 when moving toward. Thus, the intervening member S can be prevented from being unintentionally pulled out from the intervening member supply unit 60, and thus the intervening member S can be used without waste.

Further, since the interposition member supply unit 60 includes the damper 67 that imparts rotation resistance to the reel 61, when the unused interposition member S is pulled out from the reel 61, the reel 61 can be prevented from spinning idly. Therefore, it is possible to prevent the intervening member S from being unintentionally pulled out from the intervening member supply unit 60, so that the interposing member S can be used without waste.

Further, since the brake mechanism 65 is driven by compressed air, it is possible to improve the brake efficiency with respect to the applied power, as compared with the configuration in which the brake mechanism is an electromagnetic brake. Therefore, it is possible to provide the punching device 1 capable of reducing the power consumption.

The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, in the above-described embodiment, the punching device 1 includes the pair of processing units 11, but the present invention is not limited to this, and may have a configuration including one processing unit.

Further, in the above-described embodiment, the spring 97 is used as a pressurizing unit that applies a predetermined load to the downstream side in the pulling-out direction of the interposing member S while sandwiching the interposing member S, but the present invention is not limited to this. The pressurizing means may be configured to apply a predetermined load to the downstream side (lower side) in the pull-out direction of the interposing member S by gravity acting on the shaft 93, for example. Further, when the gravity acting on the shaft 93 is large with respect to a predetermined load, the spring may be arranged to bias the shaft 93 upward. Further, compressed air for moving the shaft 93 to the upstream side (upper side) in the drawing direction of the interposition member S can be supplied to the cylinder 91, and the load of the spring moves the shaft to the downstream side in the drawing direction of the interposition member S ( It may be configured to move to the lower side). Since the predetermined load can be easily adjusted by applying the spring 97, which is a spring, as the pressurizing means, the pressurizing means can be easily formed.

Further, in the above-described embodiment, PET is taken as an example of the material forming the intervening member S, but the material is not limited to this. Examples of the material forming the interposition member S include polyethylene, polyamide, polyimide, polycarbonate, polypropylene, polyurethane, polyphenylene sulfide, polyether sulfone, polyether ether ketone, polyetherimide, polytetrafluoroethylene, and aluminum vapor deposition. Examples include films.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with known constituent elements without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1... Drilling device 31... 1st drill (drill) 32... 2nd drill (drill) 44... 1st bush (receiving member) 45... 2nd bush (receiving member) 60... Interposition member supply part 61... Reel 65... Brake mechanism 67... Damper 80... Interposed member pull-out portion 85... First chuck portion 87... Second chuck portion 97... Spring (pressurizing means) S... Interposed member W... Work

Claims (7)

A drill for making holes in the workpiece,
A receiving member that is arranged so as to face the tip of the drill and that presses the work toward the drill at the time of drilling the work,
A strip-shaped interposing member that is sandwiched between the receiving member and the work when a hole is formed in the work,
An intervening member supply unit that holds the intervening member in a continuously drawable state and that supplies the intervening member between the receiving member and the work.
An intervening member pulling-out portion that is provided on the downstream side in the pulling-out direction of the interposing member rather than between the receiving member and the work, and that pulls out the intervening member from the interposing member supply portion,
Equipped with
The intervening member lead-out portion is
A first chuck portion capable of sandwiching the intervening member;
A second chuck portion provided on the downstream side of the first chuck portion in the pulling-out direction of the intervening member, sandwiching the intervening member, and movable by a predetermined amount to the downstream side of the interposing member in the pulling-out direction;
Including
The second chuck unit, have a pressurizing means for applying a predetermined load to the downstream side of the drawing direction of the intermediate member relative to the second chuck unit,
The second chuck portion holds the interposition member, and punches the work in a state in which the interposition member is loaded toward the upstream side in the drawing direction of the interposition member against the load of the pressurizing means. I do,
A punching device characterized by the above. A drill for making holes in the workpiece,
A receiving member that is arranged so as to face the tip of the drill and that presses the work toward the drill during drilling of the work,
A strip-shaped interposing member that is sandwiched between the receiving member and the work when a hole is formed in the work,
An intervening member supply unit that holds the intervening member in a continuously drawable state and that supplies the intervening member between the receiving member and the work.
An intervening member pulling-out portion that is provided on the downstream side of the receiving member and the work in the pulling-out direction of the interposing member, and that pulls out the interposing member from the interposing member supply portion;
Equipped with
The intervening member lead-out portion is
A first chuck portion capable of sandwiching the intervening member;
A second chuck portion that is provided on the downstream side of the first chuck portion in the pull-out direction of the interposing member, and that is capable of sandwiching the intervening member and moving a predetermined amount to the downstream side of the interposing member in the pull-out direction;
Including
The second chuck portion has a pressing means that is a spring that applies a predetermined load to the second chuck portion toward the downstream side in the drawing direction of the interposing member.
A punching device characterized by the above. The first chuck portion and the second chuck portion are driven by compressed air,
The punching device according to claim 1 or 2, wherein. The second chuck unit, after the predetermined amount of movement to the downstream side of the drawing direction of the intermediate member, to release the compressed air to move the second chuck portion on the downstream side of the drawing direction of the intermediate member,
The punching device according to claim 3, wherein the punching device is a punching device. The intervening member supply unit,
A reel around which the interposition member is wound,
A brake mechanism that can regulate the rotation of the reel,
Equipped with
The brake mechanism restricts rotation of the reel after the second chuck portion holds the intervening member and moves by the predetermined amount.
The punching device according to claim 1, wherein the punching device is a punching device. The interposition member supply unit includes a damper that imparts rotation resistance to the reel,
The punching device according to claim 5, wherein: The brake mechanism is driven by compressed air,
The punching device according to claim 5, wherein the punching device is a punching device.

Images