JP2018001376A - Drilling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drilling device that can surely prevent occurrence of burr.SOLUTION: The drilling device comprises: drills for drilling a work-piece; bushes for pressing the work-piece toward the drills; a belt-like intervening member S which is sandwiched between the bush and the work-piece when drilling the work-piece; an intervening member supply part which supplies the intervening member S to a space between the bush and the work-piece; and an intervening member pull-out part 80 which pulls out the intervening member S from the intervening member supply part. The intervening member pull-out part 80 includes: a first chuck part 85 which can hold the intervening member S; and a second chuck part 87, provided closer to a downstream side in a pulling-out direction of the intervening member S than the first chuck part 85, which can move the intervening member S by a prescribed distance to the downstream side in the pulling-out direction of the intervening member S while holding the member. The second chuck part 87 has a spring 97 which applies a predetermined load toward the downstream side in the pulling-out direction of the intervening member S with respect to the second chuck part 87.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a punching device.

  2. Description of the Related Art A drilling device that drills holes in a workpiece such as a printed circuit board with a drill is known. For example, Patent Document 1 discloses a table, a spindle capable of rotating and lifting while holding a tool for processing a printed circuit board placed on the table, and a presser that presses the printed circuit board against the table when processing the printed circuit board. And a drilling device comprising the device.

  As a drilling device, there is a drilling device that performs a drilling process in a state where a workpiece is pressed from a side opposite to a drill toward a drill side by a receiving member. When the receiving member is used for the first time, a hole is drilled together with the workpiece. 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-described prior art, the hole diameter of the receiving member gradually increases due to minute blurring of the drill by repeatedly inserting the drill through the hole of the receiving member by drilling. When the hole diameter of the receiving member increases, a gap is generated between the hole of the receiving member and the drill when the workpiece is drilled. When the drill penetrates the workpiece, a part of the material constituting the workpiece is pushed into the gap between the hole of the receiving member and the drill. For this reason, a burr | flash generate | occur | produces in the opening edge of the hole formed in the workpiece | work so that it may protrude toward the receiving member side.

  In view of this, a punching device has been developed in which a sheet-like interposition member is sandwiched between a member and a workpiece when the workpiece is punched. In this apparatus, the interposition member is formed in a band shape and is held in a state of being wound around a reel, for example. And the unused part of the interposed member pulled out from the reel is pinched | interposed between a receiving member and a workpiece | work for every drilling process. According to the drilling method using this apparatus, the opening edge of the workpiece on the receiving member side can be covered with the interposition member. Thereby, when a drill penetrates a workpiece | work, it can prevent that the material which comprises a workpiece | work contacts an interposition member, and is extruded to the clearance gap between the hole of a receiving member and a drill from the opening edge by the side of the receiving member of a workpiece | work. Therefore, it is possible to suppress the occurrence of burrs at the opening edge of the workpiece on the receiving member side when the workpiece is drilled.

  By the way, when pressing the workpiece, the receiving member moves between a position where the workpiece is pressed and a position where the workpiece is separated from the workpiece. At the time of making a new hole in the work, the interposition member is pulled out from the reel by a predetermined amount, and the used part of the interposition 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 workpiece, the interposed member is pulled by the receiving member, and the used portion of the interposed member may return between the workpiece and the receiving member. Further, when the receiving member is separated from the workpiece, the interposed member is in a loose state. As a result, when the interposition member is pulled out from the reel, the predetermined amount cannot be pulled out accurately, and there is a possibility that the used portion of the interposition member is disposed again between the workpiece and the receiving member. Therefore, there is a possibility that the occurrence of burrs on the workpiece cannot be prevented.

  Therefore, the present invention provides a drilling device that can reliably prevent the generation of burrs.

  A drilling device according to the present invention includes a drill for making a hole in a workpiece, a receiving member that is disposed to face the tip of the drill, and presses the workpiece toward the drill when the workpiece is drilled. A band-shaped interposition member sandwiched between the receiving member and the workpiece when drilling is held, and the interposition member is held in a state where it can be pulled out continuously, and the interposition member is interposed between the receiving member and the workpiece. An intervening member supply section that is provided on the downstream side in the pulling direction of the interposition member from between the receiving member and the workpiece, and an interposer member extraction section that pulls out the interposition member from the interposition member supply section, The intermediate member drawing portion is provided on the downstream side of the first chuck portion with respect to the first chuck portion, and the intermediate member is interposed between the first chuck portion and the first chuck portion. A second chuck part that can move a predetermined amount to the downstream side in the drawing direction of the interposition member with a material sandwiched therebetween, and the second chuck part is in the pulling direction of the interposition member with respect to the second chuck part It has a pressurizing means for applying a predetermined load toward the downstream side.

  According to the present invention, when the receiving member moves toward the workpiece, the interposed member can be pulled toward the upstream side while applying a load to the second chuck portion by the pressurizing means. As a result, the intervening member is pulled back more than the desired amount due to the inertia when the intervening member is pulled by the receiving member, and the used portion of the intervening member sent out between the receiving member and the work is again connected to the receiving member and the work. Can be prevented from returning during the period. Further, when the receiving member is separated from the workpiece, the interposed 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 and pulled back by the receiving member can be moved again to the downstream side, so that the interposition member can be prevented from slackening. Therefore, since the intervening member can be accurately pulled out from the intervening member drawing portion by a predetermined amount, it is possible to prevent the used portion of the intervening member from being disposed again between the workpiece and the receiving member. Therefore, generation | occurrence | production of a burr | flash can be prevented reliably.

  In the above punching device, it is desirable that the pressurizing means is a spring.

  According to the present invention, it is possible to easily form the pressurizing means for applying a predetermined load to the interposed member.

  In the above hole punching device, it is preferable that the first chuck portion and the second chuck portion are driven by compressed air.

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

  In the above hole punching device, the second chuck portion is moved by a predetermined amount downstream in the drawing direction of the interposition member, and then the second chuck portion is moved downstream in the drawing direction of the interposition member. It is desirable to release the air.

  According to the present invention, by releasing the supply of compressed air that drives the movement of the second chuck portion in the pull-out direction, a predetermined load is applied to the second chuck portion by the pressurizing means with the interposed member interposed therebetween. Can do.

  In the above hole punching device, the interposition member supply section 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 section. It is preferable that after the intermediate member is sandwiched and moved by the predetermined amount, rotation of the reel is restricted.

  According to the present invention, since the brake mechanism restricts the rotation of the reel around which the interposed member is wound after the second chuck portion sandwiches the interposed member and moves by a predetermined amount, the receiving member moves toward the workpiece. In doing so, it is possible to prevent the interposition member from being pulled out of the reel by being pulled by the receiving member. Thereby, since the intervening member can be prevented from being unintentionally pulled out from the intervening member supply unit, the intervening member can be used without waste.

  In the above-described punching device, it is desirable that the interposed member supply unit includes a damper that imparts rotational resistance to the reel.

  ADVANTAGE OF THE INVENTION According to this invention, when drawing an unused interposed member from a reel, it can suppress that a reel idles. Therefore, since the intervening member can be prevented from being unintentionally pulled out from the intervening member supply unit, the intervening member can be used without waste.

  In the above punching device, the brake mechanism is preferably driven by compressed air.

  According to the present invention, it is possible to improve the brake efficiency with respect to the input power as compared with the configuration in which the brake mechanism is an electromagnetic brake. Therefore, it is possible to provide a drilling device that can reduce power consumption.

  According to the present invention, when the receiving member moves toward the workpiece, the interposed member can be pulled toward the upstream side while applying a load to the second chuck portion by the pressurizing means. As a result, the intervening member is pulled back more than the desired amount due to the inertia when the intervening member is pulled by the receiving member, and the used portion of the intervening member sent out between the receiving member and the work is again connected to the receiving member and the work. Can be prevented from returning during the period. Further, when the receiving member is separated from the workpiece, the interposed 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 and pulled back by the receiving member can be moved again to the downstream side, so that the interposition member can be prevented from slackening. Therefore, since the intervening member can be accurately pulled out from the intervening member drawing portion by a predetermined amount, it is possible to prevent the used portion of the intervening member from being disposed again between the workpiece and the receiving member. Therefore, generation | occurrence | production of a burr | flash can be prevented reliably.

It is a perspective view of the punching device of an embodiment. It is a perspective view showing some composition of a punching device of an embodiment. It is a front view which shows the partial structure of the punching apparatus of embodiment. It is a side view of the interposition member supply part concerning an embodiment. It is a top view of the interposed member supply part concerning an embodiment. It is a front view of the intervention member drawer part concerning an embodiment. It is a side view of the intervention member drawer part concerning an embodiment. It is operation | movement explanatory drawing of the punching apparatus of embodiment, Comprising: It is a perspective view of a punching apparatus. It is operation | movement explanatory drawing of the punching apparatus of embodiment, Comprising: It is a perspective view of a punching apparatus. It is operation | movement explanatory drawing of the punching apparatus of embodiment, Comprising: It is a front view of the principal part of a punching apparatus. It is operation | movement explanatory drawing of the punching apparatus of embodiment, Comprising: It is a perspective view of a punching apparatus. It is operation | movement explanatory drawing of the punching apparatus of embodiment, Comprising: It is a front view of the principal part of a punching apparatus. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part. It is operation | movement explanatory drawing of the interposition member extraction part which concerns on embodiment, Comprising: It is a front view of an interposition member extraction part.

Hereinafter, embodiments of the present invention will be described 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 punching device 1 is a device that opens a hole in a work W such as a printed board by moving a drill in the vertical direction. The punching device 1 includes a pair of processing units 11 for punching a work W, a pair of image pickup units 12 for picking up an image of the work W, and a rectangular parallelepiped housing 3 that houses the processing unit 11 and the image pickup unit 12 therein. The lower base 5 and the pair of upper bases 7 arranged in the housing 3 and a work on which the work W is placed on the upper part and can be moved relative to the housing 3 by a transport mechanism (not shown). Table 9 is provided. In the present embodiment, the moving direction of the work table 9 by the transport mechanism is set to one horizontal direction. In the following description, the moving 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. Moreover, the white arrow shown in FIG. 1 is a worker's fixed position, and the worker stands in the direction (X direction) to which the white arrow points and carries the workpiece W in and out. In the following description, the fixed position side of the operator with respect to the punching device 1 in the X direction is referred to as the near side, and the opposite side is referred to as the back side.

FIG. 2 is a perspective view illustrating 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 undercarriage 5 is fixed to the housing 3 and is a stationary part in the punching device 1. As shown in FIG. 2, the undercarriage 5 is formed in a rectangular plate shape along the XY plane. A rectangular through hole 5 a is formed at the center of the lower base 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 moving bases 15 are supported side by side in the Y direction so as to be slidable in the Y direction. In addition, a pair of ball screws 17 are attached to the upper part of the undercarriage 5 in parallel to the linear guide 13. The pair of ball screws 17 each move the moving gantry 15 in the Y direction, and are respectively disposed between the lower gantry 5 and each moving gantry 15. Each ball screw 17 is driven by a motor 19.

  A linear guide 21 parallel to the X direction is attached to the upper part of each movable mount 15. On the upper part of each linear guide 21, a support frame 51 (support portion) described later is supported in a state in which it can slide in the X direction. As shown in FIG. 3, ball screws 23 (see FIG. 3) are attached to the upper portions of the movable mounts 15 in parallel to the linear guides 21. The ball screw 23 moves the support frame 51 in the X direction, and is arranged between the movement frame 15 and the support frame 51. Each ball screw 23 is driven by a motor 25.

  As shown in FIG. 1, the pair of upper racks 7 are respectively arranged on the upper side of the lower racks 5. The pair of upper bases 7 are respectively fixed to the housing 3 and are immovable portions in 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. The pair of mount bases 7 are formed symmetrically with respect to the ZX plane. Each upper base 7 is formed with a cutout portion 7a that 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 base 5 in the X direction.

  In the housing 3, a window portion 3 a that opens to the front side in the X direction is formed above the pair of mount bases 7. The window part 3a is formed over substantially the whole in the Y direction. The window part 3a exposes a part of the processing unit 11 accommodated in the housing 3 to the outside. Thereby, an operator can perform various operations with respect to the processing unit 11 through the window portion 3a. As shown in the figure, the window 3a is normally closed by the front panel 3b.

  The work table 9 is disposed across a pair of the upper platforms 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 composed of a plurality of suction holes for vacuum chucking the workpiece W placed thereon. In addition, through holes 9b for punching the work W are formed in the four corners of the work table 9 and in the X direction center at both ends in the Y direction. The through-hole 9b is formed corresponding to a preset drilling position for the work W placed on the work table 9. The work table 9 moves in the X direction through the window 3 a of the housing 3. In addition, when the window part 3a is obstruct | occluded by the front panel 3b, the work table 9 moves to a X direction through the clearance gap between the front panel 3b and a pair of mount stand 7. FIG.

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

  As shown in FIGS. 1 and 2, the machining unit 11 is disposed on the opposite side of the first drill 31 with the work table 9 sandwiched between the first drill 31 and the second drill 32 disposed on the upper side of the work table 9. The first pressing unit 41, the second pressing unit 42 disposed on the opposite side of the second drill 32 across the work table 9, the first drill 31, the second drill 32, the first pressing unit 41, and the first pressing unit 41. And a support frame 51 that supports the two-pressing unit 42.

  The support frame 51 is disposed inside the notch 7 a of the upper frame 7. The support frame 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 frame 51 is disposed 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 on the upper side of the work table 9. The bottom wall 52 of the support base 51 is disposed on the lower side of the work table 9 and supported by the upper portion of the linear guide 21 described above. Thereby, the support frame 51 can move in the XY directions with respect to the lower frame 5.

  As shown in FIG. 1, the first drill 31 is attached to the Y-direction inner end of the upper wall 54 of the support frame 51. The first drill 31 includes a spindle 33, a spindle moving mechanism (not shown) that moves the spindle 33 along 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 frame 51. The pressing member 35 is formed in a box shape and is slidably attached to the lower end portion 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 33 is moved downward by the spindle moving mechanism in a state where the drill bit 34 is rotationally driven, the presser member 35 presses the workpiece W from the upper side, and the drill bit 34 moves downward from the through hole of the presser member 35. A hole is made in the workpiece W that protrudes toward the workpiece and is placed on the workpiece table 9.

  The second drill 32 is attached to the outer wall of the support frame 51 on the outer side in the Y direction than the first drill 31 along with the first drill 31. Similar to 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 pressing member 35. In addition, by providing the drill bit 34 having a diameter different from that of the drill bit 34 included in the first drill 31 in the second drill 32, it is possible to open a hole having a different hole diameter 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 43, a moving mechanism (not shown) that moves the base 43 along the Z direction, and a first bush 44 (first receiving member) that is detachably attached to the upper portion of the base 43. And. The moving mechanism is, for example, an air cylinder or the like, and is provided between the base 43 and the bottom wall 52 of the support frame 51. The first bush 44 is formed in a rectangular parallelepiped shape by, 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 disposed to face the tip (lower end) of the drill bit 34 of the first drill 31 and is fitted to the upper end portion of the base portion 43. The first bush 44 presses the workpiece W toward the first drill 31 when the workpiece W is drilled by the first drill 31.

  The second pressing unit 42 is attached to the outer side in the Y direction from the first pressing unit 41 along with the first pressing unit 41 in the upper part of the bottom wall of the support frame 51. The second pressing unit 42 is formed in the same manner as the first pressing unit 41, and includes a base 43, a moving mechanism (not shown), and a second bush 45 (second receiving member). The 2nd bush 45 is formed in the square shape larger than the cross-sectional shape of the drill bit 34 of the 2nd drill 32 seeing from a Z direction. The second bush 45 is disposed 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 workpiece W toward the second drill 32 when the workpiece W is drilled by the second drill 32.

As shown in FIG. 1, the processing unit 11 includes a strip-shaped interposition member S, an interposition member supply part 60 that holds the interposition member S, and an interposition member drawing part 80 that pulls out the interposition member S from the interposition member supply part 60. And having.
The interposing member S is sandwiched between the bushes 44 and 45 (see FIG. 3) and the workpiece W when the workpiece W is drilled. The intervening member S is a film formed in a band shape from a resin material such as PET (Polyethylene terephthalate). The thickness of the interposed member S is, for example, about 100 μm.

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

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

  The holding part 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 end on the near side in the X direction of the upper plate portion 63a, and a front plate portion. The lower plate portion 63c extends from the lower end edge of 63b toward the front side in the X direction, and the back plate portion 63d hangs down from the end edge on the far side in the X direction of the upper plate portion 63a. The lower plate portion 63c supports the shaft of the reel 61 so as to be rotatable. A shaft 73 is rotatably supported by the front plate portion 63b and the back plate portion 63d. The shaft 73 is provided in parallel to the X direction. Both end portions of the shaft 73 protrude 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 that is driven by compressed air, and can restrict the rotation of the shaft 73. Thereby, the brake mechanism 65 can regulate the rotation of the reel 61.

The damper 67 is attached to the back side in the X direction of the back plate part 63 d of the holding part 63. The damper 67 is a rotary damper and is connected to the end of the shaft 73 on the far side in the X direction. The damper 67 gives rotational resistance to the shaft 73. As a result, the damper 67 imparts rotational resistance to the reel 61.
The detection unit 69 is attached to the lower part of the lower plate portion 63 c 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 interposition member S wound around the reel 61 is pulled out downward, and then wraps around the first roller 79 a and the second roller 79 b provided in the holding portion 63, and moves in the X direction. They are folded back in order from the back to the bottom. Thereafter, the interposed member S wraps around the third roller 79c, the fourth roller 79d, and the fifth roller 79e provided on the upper base 7 at substantially the same position as the lower surface of the work table 9 in the Z direction, It is turned back toward the inner side in the direction and the inner side in the Y direction. The interposition member S folded back at the fifth roller 79e extends along the lower surface of the work table 9.

FIG. 6 is a front view of the interposed member drawing portion according to the embodiment. FIG. 7 is a side view of the interposing member drawing portion according to the embodiment.
The interposed member drawing portion 80 is disposed in the through hole 5a (see FIG. 2) of the undercarriage 5. As shown in FIGS. 6 and 7, the interposer drawing part 80 includes a base portion 81 attached to the lower base 5, a guide tube 83 supported by the upper base 7, and a first portion supported by the base portion 81. A chuck portion 85 and a second chuck portion 87.

  The guide tube 83 extends from the upper end portion having an opening facing the lower surface of the work table 9 so as to incline toward the inside in the Y direction toward the lower side, and further extends toward the lower side. An opening that opens downward is formed at the lower end of the guide tube 83. The guide cylinder 83 receives the interposition member S extending along the lower surface of the work table 9 at the opening at the upper end, and discharges the interposition member S that has entered inside from the opening at the lower end.

  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 portion of the guide cylinder 83. The first chuck portion 85 is provided so as to be able to clamp the interposition member S drawn downward from the opening at the lower end portion of the guide tube 83. The first chuck portion 85 includes a first chuck body portion 85a formed in a block shape that sandwiches the interposition member S from both sides in the Y direction, and extends downward from the first chuck body portion 85a. And an extending piece 85b that sandwiches the interposed member S together with 85a. The first chuck portion 85 is driven by compressed air. That is, the first chuck body 85a sandwiches the interposed member S when the compressed air is supplied, and releases the sandwiched member S when the supplied compressed air is released.

  The second chuck portion 87 is attached to the front side of the base portion 81 in the X direction. The second chuck part 87 is provided below the first chuck part 85. The second chuck portion 87 is provided so that the interposition member S pulled out downward from the opening at the lower end of the guide tube 83 can be clamped below the first chuck main body portion 85a. The second chuck portion 87 includes a block-shaped second chuck main body portion 87a that sandwiches the interposition member S from both sides in the Y direction, a moving mechanism 89 that supports the second chuck main body portion 87a so as to be movable along the Z direction, A magnet sensor 98 that detects the position of the second chuck main body portion 87a and an interposition member sensor 99 that detects the presence or absence of the interposition member S below the second chuck main body portion 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 includes a cylinder 91 attached to the base portion 81, a shaft 93 supported by the cylinder 91 so as to be movable in the Z direction, and is fixed to the shaft 93 and supports the second chuck main body portion 87a. A pedestal 95 and a spring 97 (pressurizing means) inserted through the shaft 93 are provided.

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

  The shaft 93 extends along the Z direction and is inserted through the cylinder 91. Both end portions of the shaft 93 in the Z direction protrude from the cylinder 91. A nut 93 a is screwed to the lower end portion of the shaft 93.

  The pedestal 95 is disposed on the front side of the cylinder 91 in the X direction. The upper end portion of the pedestal portion 95 is fixed to the upper end portion of the shaft 93. Thereby, the pedestal part 95 moves in the Z direction together with the second chuck main body part 87a supported by the pedestal part 95 as the shaft 93 moves in the Z direction. A stopper 95a protrudes from the pedestal 95 in the Y direction. The stopper 95a comes into contact with the restriction portion 91a of the cylinder 91 from the lower side when the pedestal portion 95 moves upward. Thereby, the upper end of the movement range in the Z direction of the base part 95 is prescribed | regulated.

  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 disposed between a lower end portion of the cylinder 91 and a nut 93 a screwed to the lower end portion of the shaft 93. The spring 97 biases the nut 93a toward the direction away from the cylinder 91 (that is, the lower side).

  The magnet sensor 98 is disposed on the outer side in the Y direction. The magnet sensor 98 is provided so as to be able to detect the position of the pedestal 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 main body 87a. The interposition member sensor 99 is a fiber sensor, and detects the presence or absence of the interposition member S located on the downstream side of the second chuck main body 87a in the drawing direction of the interposition member S.

  The second chuck part 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. When the compressed air is supplied, the second chuck body 87a holds the interposed member S, and the supplied compressed air is released to release the holding of the interposed member S. On the other hand, two systems of compressed air can be supplied to the cylinder 91. Specifically, the cylinder 91 moves the shaft 93 upward by releasing the compressed air supplied from one system and the compressed air supplied from the other system. Further, the cylinder 91 releases the compressed air supplied from one system and moves the shaft 93 downward by supplying compressed air from the other system.

  The processing unit 11 described above can be perforated only in a region set in advance in the X direction, and the interposed member S is disposed along the lower surface of the work table 9 in that region. That is, the intervening member S travels through a fixed position in the punching device 1 and moves the punched portion of the workpiece W to that position to perform punching. Coarse adjustment of the drilling position in the X direction of the work W is performed by moving the work table 9. Fine adjustment of the drilling position of the workpiece W in the X direction and adjustment of the drilling position of the workpiece 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 is provided on both sides in the Y direction of the hole punching device 1, similarly to the pair of processing units 11. The pair of imaging units 12 are formed symmetrically with respect to the ZX plane.

  As shown in FIG. 2, each imaging unit 12 includes an X-ray irradiator 57 and an X-ray camera 59. The X-ray irradiator 57 is attached to the back side of the first drill 31 and the second drill 32 in the X direction on the upper wall 54 of the support frame 51. The X-ray irradiator 57 irradiates the workpiece 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 irradiated on the workpiece W.

Hereinafter, operation | movement of the punching apparatus 1 of this embodiment is demonstrated.
First, the drilling operation with a drill will be described with reference to FIGS. In the following description, a case will be described in which the machining units 11 on both sides in the Y direction simultaneously make holes in the workpiece W. Moreover, in the following description, although the case where a hole is drilled by the 1st drill 31 in the both corners of the X direction back side of the workpiece | work W is demonstrated, also when the hole is drilled in the both corners of the X direction near side of the workpiece | work W The same applies to the case where the second drill 32 opens a hole.

8 to 12 are operation explanatory diagrams 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. FIG.
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 in the X direction of the work table 9 overlaps 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 workpiece W is imaged by the imaging unit 12, and the XY coordinates of the position where the hole is opened are acquired.

Next, as shown in FIG. 9, the support frame 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, the rotation of the reel 61 is restricted by the brake mechanism 65 in the interposed member supply unit 60. And the 1st bush 44 attached to the upper part of the base 43 is put in the through-hole 9b of the work table 9. FIG. Then, the interposition member S arranged along the lower surface of the work table 9 enters the through hole 9 b so as to be pulled by the first bush 44. Then, the first bush 44 is brought into contact with the workpiece W with the interposed member S interposed therebetween.

  Next, as shown in FIGS. 11 and 12, a hole is made in the workpiece W by the first drill 31. Specifically, the spindle 33 is moved downward by a spindle moving mechanism (not shown) while the drill bit 34 is rotated by the spindle 33. As a result, it is possible to make a hole in the workpiece W from the upper side by the drill bit 34 while pressing the workpiece W upward by the first bush 44 that contacts the workpiece W from the lower side.

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

The drawing operation of the interposing member S by the interposing member drawing portion 80 is performed in a state in which the bushes 44 and 45 do not press the workpiece W after the above-described punching operation.
First, in a state where compressed air is supplied to the second chuck main body portion 87a and the interposed member S is sandwiched by the second chuck main body portion 87a, compressed air is supplied to the first chuck main body portion 85a and the first chuck main body portion 85a. Thus, the interposition member S is sandwiched. Next, as shown in FIG. 13, the compressed air supplied to the second chuck body 87a is released to release the holding of the interposed 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 the compressed air supplied from the other system to the cylinder 91, the second chuck body portion 87a is moved to the first. Move toward the chuck body 85a (upper side). Here, when the above-described stopper 95a comes into contact with the restriction portion 91a of the cylinder 91, the upward movement of the second chuck main body portion 87a is restricted.
Next, as shown in FIG. 15, compressed air is supplied to the second chuck body 87a, and the interposition member S is sandwiched by the second chuck body 87a. As a result, the second chuck main body 87a can always hold the interposition member S on the upper side by a predetermined amount. That is, the feed pitch of the interposing member S can be adjusted by adjusting the contact position between the stopper 95a provided on the pedestal 95 and the restricting portion 91a provided on the cylinder 91. In this embodiment, the feed pitch of the interposing member S is adjusted by moving the position in the Z direction of the restricting portion 91a provided in the cylinder 91. However, 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 85a is released, and the sandwiching of the interposed member S by the first chuck body 85a is released.
Next, the air brake of the brake mechanism 65 of the intervening member supply unit 60 is released and the rotation of the reel 61 is allowed to allow the intervening member S to be drawn. As shown in FIG. The compressed air supplied from is released, and compressed air is supplied to the cylinder 91 from the other system to move the second chuck body 87a downward by a predetermined amount. Accordingly, the interposition member S sandwiched between the second chuck main body portions 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 imparts rotational resistance to the reel 61 in the intervening member supply unit 60, it is possible to prevent the intervening member S from slackening due to the reel 61 spinning idle. Thereafter, when the magnet sensor 98 detects a predetermined amount of movement of the second chuck main body 87a, the air brake of the brake mechanism 65 is operated to restrict the rotation of the reel 61 and stop the second chuck main body 87a. Here, the compressed air supplied from the other system to the cylinder 91 is released, and the second chuck main body 87a is biased downward by the spring 97, thereby interposing the second chuck main body 87a. A predetermined load is applied toward the downstream side in the drawing direction of the member S.

  Here, after the interposing member S is pulled out by a predetermined amount, as shown in FIG. 10, when the first bush 44 is inserted into the through hole 9 b of the work table 9, the interposing member S is pulled by the first bush 44. At this time, the interposition member S is sandwiched between the second chuck main body portions 87a at the interposition member pull-out portion 80, and a predetermined load is applied to the downstream side in the pull-out direction by the spring 97. Further, the reel 61 is restricted from rotating by the brake mechanism 65. For this reason, when the interposed member S is pulled by the first bush 44, the second chuck main body 87a, together with the interposed member S, faces the upstream side in the pulling direction against the load of the spring 97, as shown in FIG. Move. Then, when the first bush 44 is retracted downward after drilling, as shown in FIG. 17, the second chuck body 87 a moves together with the interposition member S toward the downstream side in the pulling direction by the load of the spring 97. . Thereafter, when repeating the punching operation, similarly, the compressed air is supplied to the first chuck main body 85a and the first chuck main body 85a is interposed while the interposition member S is sandwiched by the second chuck main body 87a. As shown in FIG. 13, the member S is sandwiched, and the compressed air supplied to the second chuck body 87a is released to release the sandwiching member S from being sandwiched by the second chuck body 87a.

  Thus, according to the present embodiment, when the bushes 44 and 45 move toward the workpiece W, the interposed member S is pulled toward the upstream side while applying a load to the second chuck portion 87 by the spring 97. Can do. As a result, the used portion of the interposed member S that is pulled back from the space between the bushes 44 and 45 and the workpiece W by being pulled back more than the desired amount due to the inertia when the interposed member S is pulled by the bushes 44 and 45. Can be prevented from returning again between the bushes 44 and 45 and the workpiece W. Further, when the bushes 44 and 45 are separated from the work W, the interposed 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 and pulled back by the bushes 44 and 45 can be moved again to the downstream side, so that the interposition member S can be prevented from loosening. Therefore, since the intervening member S can be accurately pulled out from the intervening member drawing portion 80 by a predetermined amount, the used portion of the intervening member S is prevented from being disposed again between the workpiece W and the bushes 44 and 45. it can. Therefore, generation | occurrence | production of a burr | flash can be prevented reliably.

  Further, since the first chuck portion 85 and the second chuck portion 87 are driven by compressed air, the first chuck portion 85 is compared with a configuration in which the first chuck portion 85 and the second chuck portion 87 are driven by a motor. In addition, the component cost of the driving source of the second chuck portion 87 can be reduced. Therefore, the punching device 1 can be provided at a low cost.

  Further, the second chuck portion 87 moves a predetermined amount downstream in the drawing direction of the interposed member S, and then releases the compressed air that has moved the second chuck portion 87 downstream in the drawing direction of the interposed member S. In addition, a predetermined load can be applied to the second chuck portion 87 by the spring 97 with the interposed member S interposed therebetween.

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

  Further, since the interposed member supply unit 60 includes the damper 67 that imparts rotational resistance to the reel 61, when the unused interposed member S is pulled out from the reel 61, the reel 61 can be prevented from spinning idle. Therefore, since the intervening member S can be prevented from being unintentionally pulled out from the intervening member supply unit 60, the intervening member S can be used without waste.

  In addition, since the brake mechanism 65 is driven by compressed air, the brake efficiency with respect to the applied power can be improved as compared with a configuration in which the brake mechanism is an electromagnetic brake. Therefore, it is possible to provide the drilling device 1 that can reduce power consumption.

The present invention is not limited to the above-described embodiment 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 hole punching device 1 includes the pair of processing units 11, but is not limited thereto, and may be configured to include one processing unit.

  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 drawing direction of the interposing member S with the interposing member S interposed therebetween, but the embodiment is not limited thereto. The pressurizing unit may be configured to apply a predetermined load to the downstream side (lower side) of the interposing member S in the pulling direction by, for example, gravity acting on the shaft 93. Further, when the gravity acting on the shaft 93 is large with respect to a predetermined load, the spring may be arranged to urge the shaft 93 upward. The cylinder 91 can be supplied with compressed air that moves the shaft 93 to the upstream side (upper side) in the drawing direction of the interposing member S. The spring is loaded with the shaft on the downstream side in the drawing direction of the interposing member S ( It may be configured to move to the lower side. In addition, since the predetermined load can be easily adjusted by applying the spring 97 which is a spring as the pressurizing unit, the pressurizing unit can be easily formed.

  Moreover, in the said embodiment, although PET was mentioned as an example as a material which forms the interposed member S, it is not limited to this. Examples of the material for forming the interposing member S include polyethylene, polyamide, polyimide, polycarbonate, polypropylene, polyurethane, polyphenylene sulfide, polyethersulfone, polyetheretherketone, polyetherimide, polytetrafluoroethylene, and aluminum vapor deposition. A film etc. are mentioned.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components 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 ... Intermediate member drawing portion 85 ... First chuck portion 87 ... Second chuck portion 97 ... Spring (pressurizing means) S ... Intermediate member W ... Workpiece

Claims (7)

A drill that drills holes in the workpiece;
A receiving member that is disposed to face the tip of the drill and presses the workpiece toward the drill when the workpiece is drilled;
A band-shaped interposition member sandwiched between the receiving member and the work when the work is perforated;
While holding the interposition member in a continuously drawable state, an interposition member supply section that supplies the interposition member between the receiving member and the workpiece;
An intervening member drawing portion that is provided on the downstream side in the pulling direction of the interposition member from between the receiving member and the workpiece, and draws out the interposition member from the interposition member supply portion;
With
The interposed member lead-out part is
A first chuck part capable of sandwiching the interposition member;
A second chuck part that is provided downstream of the first chuck part in the drawing direction of the interposition member, and is capable of moving a predetermined amount to the downstream side in the drawing direction of the interposition member by sandwiching the interposition member;
Including
The second chuck part includes a pressurizing unit that applies a predetermined load toward the downstream side in the drawing direction of the interposed member with respect to the second chuck part.
A drilling device characterized by that. The pressurizing means is a spring.
The perforating apparatus according to claim 1, wherein: The first chuck part and the second chuck part are driven by compressed air;
The punching device according to claim 1 or 2, characterized in that. The second chuck part moves a predetermined amount downstream in the drawing direction of the interposed member, and then releases the compressed air that has moved the second chuck part downstream in the drawing direction of the interposed member.
The perforating apparatus according to claim 3. The interposed member supply unit
A reel around which the interposition member is wound;
A brake mechanism capable of regulating the rotation of the reel;
With
The brake mechanism regulates rotation of the reel after the second chuck portion sandwiches the interposition member and moves the predetermined amount.
The punching device according to any one of claims 1 to 4, wherein the punching device is provided. The interposed member supply unit includes a damper that imparts rotational resistance to the reel.
The perforating apparatus according to claim 5. The brake mechanism is driven by compressed air;
The drilling device according to claim 5 or 6, characterized in that

Images