JP5276969B2 - Blade device for processing sheet-like workpieces - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel cutter device preventing actual cutting-in work from being affected unfavorably by longitudinal vibration along a thickness direction of a workpiece to be machined by a cutter. <P>SOLUTION: This cutter device 5 is a device for carrying out the cutting-in work, while moving longitudinally a cutter blade 53 attached to a cutter holder 52, by a cam device 54, is provided with: in the cutter holder 52, a pair of cam followers 56 clamping an action rib 551 of a cam body 55 from an inner side and an outer side; a counter balancer 57 in an opposed side of the cutter holder 52; and a pair of cam followers 573 clamping the action rib 551 in a member. The cutter device is constituted to reciprocate the cam followers 56 in a cutter holder 52 side, so as to move the cutter blade 53 longitudinally, by rotating the cam body 55, and also to reciprocate the cam followers 573 in a counter balancer 57 side, and to move the cutter blade 53 along an opposite direction of the cutter holder 52, when moving the cutter blade 53 longitudinally. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for cutting a product blank having a desired shape from a sheet-like workpiece such as paper corrugated cardboard, resin corrugated cardboard, resin sheet, sponge sheet, and the like. The present invention relates to a novel blade device which performs cutting while moving back and forth (vibrating) and prevents the vibration from adversely affecting the cutting operation.

For example, in order to obtain a product blank having a desired shape from a paper corrugated cardboard, a resin corrugated cardboard, a resin sheet, a sponge sheet, or the like, a punching technique that is advantageous in terms of cost is often employed.
Specifically, a die according to the shape of the product blank is used. For example, a die-shaped blade is supported on a flat plate member such as a plywood in a predetermined shape, and this die is brought into contact with the workpiece. And a method of punching a desired product blank (for example, see Patent Documents 1 and 2).
In addition, a method is also employed in which a punching blade is provided on a rotating roller, and sheet-like workpieces that are sequentially transferred are punched continuously by this roller (see, for example, Patent Document 3).
However, such a method is advantageous for, for example, paper corrugated cardboard or paper board with low punching resistance and pursuing cost reduction by mass production, but the mechanical load of the workpiece itself is low. It was difficult to deal with large ones, ones that required high-mix low-volume production (processing), or prototype prototypes.

In consideration of this, there is already a method of cutting out members of a desired shape from a sheet-like workpiece one by one. For example, while placing a sheet-like workpiece on a horizontal surface, it can be raised and lowered from there There is also known a technique (so-called plotting cutter) for cutting out a product having a desired shape by freely moving the cutter in a two-dimensional manner (see, for example, Patent Document 4).
However, this Patent Document 4 is an invention for setting the cutting edge of a pen-type cutter accurately in the cutting direction in the first place, and there is no disclosure about moving the cutter back and forth in the thickness direction of the workpiece (device). (There is no mechanism to move the pen-type cutter back and forth even if it is configured).

On the other hand, a technique for vibrating the cutter at the time of cutting is already known (see, for example, Patent Document 5). However, in this Patent Document 5, the vertical movement (vibration in the direction of biting into the workpiece) is simply applied to the blade by a cam mechanism. For this reason, when the cutter is moved up and down at a relatively low speed, there is no problem in work, but in order to vibrate the cutter at a high speed, appropriate measures are required in terms of vibration balance and the like.
JP 2004-160580 A JP-A-11-178602 International Publication WO02 / 070213 Japanese Patent Laid-Open No. 10-264088 JP-A-5-146996

  The present invention has been made in view of such a background, and when a product blank having a desired shape is cut out from a sheet-like workpiece one by one by one cutter, the cutter is moved back and forth in the thickness direction of the workpiece. While trying to add (vibration), an attempt was made to develop a novel blade device in which this vibration does not adversely affect the actual cutting operation.

  That is, the blade device for processing a sheet-like workpiece according to claim 1 performs the cutting process on the sheet-like workpiece while moving the cutter blade attached to the blade holder back and forth in the thickness direction of the workpiece by the cam device. The cam device includes a cam main body that is rotationally driven by a cutter drive motor, and the cam main body is formed by continuously forming a working rib, and the blade holder Is provided with a pair of cam followers that sandwich the action rib from the inside and the outside, and a counter balancer is provided on the opposite side of the blade holder, and the counter balancer also has a blade with respect to the rotating shaft of the cam body. A pair of cams sandwiching the action rib from the inside and the outside in a cam lift portion that is point-symmetric with the cam follower on the holder side When the cutter blade is moved back and forth, the cam body is rotated by the cutter drive motor, the cam follower on the blade holder side is reciprocated to move the cutter blade back and forth, and the opposite side of the blade holder. Also, the counter balancer side cam follower is reciprocated to repeatedly move the counter balancer back and forth in a direction opposite to the blade holder.

  Further, in addition to the requirement of the first aspect, the cutter device for processing a sheet-like workpiece according to the second aspect is characterized in that the cutter blade is of a pointed double-blade type.

  In addition to the requirement described in claim 1 or 2, the blade device for processing a sheet-like workpiece according to claim 3 is a workpiece presser that always presses the workpiece toward the tip side of the cutter blade around the cutter blade. Is provided as a feature.

The above-described problems can be solved by using the configuration of the invention described in each of the claims.
First, when reciprocating the cutter blade in the thickness direction of the workpiece (when vibrating), the counter balancer is reciprocated against the cam body so as to face the blade holder. Mechanical dynamic balance can be achieved as a blade device (vibration balance of the entire device is achieved). For this reason, the backlash when the cutter blade is vibrated at high speed can be kept extremely low, and the cutter blade can be moved back and forth (vibrated) with certainty.
In order to maintain the distance between the pair of cam followers that sandwich the ribs of the cam body, it is preferable to attach the cam follower to the same member (linear bearing) and maintain this distance. However, the pair of cam followers is acted on by a spring or the like. The gap between the pair of cam followers can be maintained by energizing the rib in the direction of sandwiching the ribs.

  According to the second aspect of the present invention, since the cutter blade is secured with appropriate rigidity, even a relatively thick work or a hard work as a material can be more reliably coupled with vibrating the cutter blade back and forth. Incision processing can be performed.

  According to the invention described in claim 3, it is possible to prevent the workpiece from rising and sinking due to the longitudinal vibration of the cutter blade, and to perform the cutting operation more reliably. In other words, when there is no workpiece presser, the workpiece at the machining site may move back and forth together following the back and forth movement (reciprocating movement) of the cutter blade (as if the cutter blade returned with the workpiece. In the present invention, such work lifting can be surely prevented by the work pressing.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention includes one described in the following examples, and further includes various methods that can be improved within the technical idea.

First, prior to the description of the “blade device for processing a sheet-like workpiece” of the present invention (hereinafter, this device is simply referred to as a blade device 5), a sheet-like workpiece W to be processed (hereinafter simply referred to as a workpiece W). And the product blank B obtained from this thing is demonstrated.
As the workpiece W, various sheet-like materials can be applied, and examples thereof include paper corrugated cardboard, resin corrugated cardboard, rubber sheets, resin sheets, sponge sheets and the like. In addition, the shape of the workpiece W is generally a single sheet-like material cut into a certain rectangular shape, but a take-up material like a resin sheet, a rubber sheet, a foamed resin sheet, etc. Alternatively, it may be supplied to the blank processing apparatus 1 as it is (drawn into a sheet) and processed.
In addition, the product application (target product) of the product blank B is generally an outer box as a packaging material, a retaining partition member applied to the inside, or a returnable box, container, etc. In addition, industrial rubber gaskets can also be obtained.

  In the following description, an example in which a product blank B (for example, an outer box as a packaging material) is cut out in an unfolded shape from a single rectangular workpiece W (for example, about 2 m in length and about 3 m in width) is taken as an example. I will explain. In other words, in order to obtain the product blank B, the workpiece W is cut out from the workpiece W by cutting or bracing (processing for forming an appropriate polygonal line) into an appropriate portion of the workpiece W, and this embodiment As shown in FIG. 1, the cut line formed in the workpiece W is indicated as L1, and the broken line is indicated as L2. Note that the fold line L2 originally has a variety of folding curves according to the desired folding method, such as mountain fold / valley fold / overlapping fold (how to fold the layers in close contact with each other). In FIG. 1, these are all shown as a broken line L2. Further, in the product blank B cut out from the workpiece W, the cut-out portion such as a handle formed in a cutout shape is used as a hollow portion b1, and the workpiece W after the product blank B is extracted Waste blank W0.

  In the present embodiment, such a workpiece W is fixed in a state where it is somewhat inclined with respect to the vertical direction (vertical surface) (for example, in the present embodiment, it is inclined about 70 degrees from the horizontal plane). W is subjected to incision processing, bracing processing, etc. Usually, the long side portion (horizontal) of the rectangular workpiece W is set to be almost horizontal so that stable placement and holding is performed. Define the direction as follows. First, the horizontal direction corresponding to the horizontal direction of the workpiece W is the left-right direction (X direction), and the direction along the vertical direction of the workpiece W (here, a direction (plane) inclined by 70 degrees with respect to the horizontal plane and not the vertical direction). The vertical direction (Y direction) and the direction perpendicular to the workpiece W (front surface) are defined as the front and rear direction (Z direction) or the back side / front side (the front side of the workpiece W, that is, the front side of the apparatus is the front side). . Note that the front-rear direction (Z direction) is a direction corresponding to the depth of cut (cut amount) and the muscle push depth (muscle push amount) into the workpiece W.

  Hereinafter, the blade device 5 of the present invention will be described. In the description, the “blank processing apparatus from a sheet-like workpiece (hereinafter, simply referred to as the blank processing apparatus 1)” having the blade apparatus 5 as one constituent member will be described, and the cutter apparatus 5 will also be described. . In the present embodiment, as described above, in order to fix and hold the workpiece W in an inclined state during processing, when the blank processing apparatus 1 is roughly classified, a workpiece according to the purpose is selected by a member related to the workpiece and an appropriately selected tool. It is divided into a member for carrying out the machining process and the bracing process (this is a member for actual machining). It should be noted that the setting of the tool action start position on the workpiece W and in which direction the tool is to be applied from here is a numerical component (so-called orthogonal coordinates) in the X, Y and Z directions based on a certain point (origin). This method itself is almost the same as a conventional method such as a plotting cutter.

  First, as a member related to workpiece holding, the apparatus frame 10 that supports the workpiece W in an inclined state is a main member, and this is a frame-shaped fixing member suitable for tilting the workpiece W as a skeleton member. . Of course, in an actual device configuration, a frame configuration made of an aluminum material or the like is preferable in consideration of weight reduction of the entire device. The work support plate 11 is provided so as to substantially form the front surface of the apparatus frame 10, and the dimensions are set in consideration of, for example, the maximum dimension of a corrugated cardboard sheet or the size used exclusively by the user. It is.

  When the work W is fixedly installed (placed) on the work support plate 11, for example, air intake holes are uniformly drilled on almost the entire surface of the work support plate 11, and the work W is evenly moved by suction from the back side. The support plate 11 can be sucked and held. At this time, if a sheet 11a having air permeability (for example, a felt sheet) is interposed between the workpiece W and the workpiece support plate 11, the cutting process by the cutter is performed without inhibiting the adsorption and holding of the workpiece W. In such a case, the sheet 11a functions as a buffering action and can protect the cutter tip and the work support plate 11. Of course, the workpiece W is fixed not only by such a suction holding method, but also when the waste blank W0 that is a blank portion with respect to the product blank B allows the arrangement of a presser bar or the like sufficiently around it. It is also possible to adopt a pressing means. Even if such a fixing method is adopted, it is preferable to provide the sheet 11a between the workpiece W and the workpiece support plate 11. In this case, the sheet 11a exclusively takes a buffering action.

Next, members relating to actual processing will be described. As members related to actual processing, the movable frame 2 configured to move two-dimensionally along the surface of the workpiece W installed, and mounted on the movable frame 2 and provided with a cutter, a pusher roller, and the like. A machining head 3 that can move the tool device T in the Z direction, a tool support rotary disk 4 constituting a part of the machining head 3, and a cutter, a pusher roller, etc. on the outer peripheral side of the tool support rotary disk 4 The tool device T (consisting of the blade device 5 and the bracing device 6 in this embodiment) on which a plurality of tools are installed is a main member. Here, a mechanism for moving the movable base 2 to an arbitrary position in the X direction is a lateral movement mechanism SX, a mechanism for moving the movable base 2 to an arbitrary position in the Y direction is a vertical movement mechanism SY, and the machining head 3 is A mechanism for moving to an arbitrary position in the Z direction is a longitudinal movement mechanism SZ. In the present embodiment, a tool is selected according to the target machining, and a mechanism for switching to the tool is a tool selection mechanism 7, and a mechanism for setting an action direction of the selected tool is a tool direction setting mechanism 8. .
And by such a mechanism (configuration), the blank processing apparatus 1 selects a target tool from various tools, moves the selected tool to an arbitrary position in the X, Y, and Z directions, and the direction of its operation. Can be appropriately changed (set), and appropriate cutting and bracing can be performed on the workpiece W. Hereinafter, each component will be described together with each mechanism.

  First, the moving gantry 2 configured to be able to move two-dimensionally along the surface of the workpiece W will be described. Of these, the members (elements) mainly related to the lateral movement mechanism SX will be described. First, in the apparatus frame 10, a traverse guide machine frame 12 is provided substantially at the upper and lower edges of the work support plate 11, and a traverse machine frame 13 is installed in the vertical direction (vertical direction) on the work support plate 11. is there. The movable gantry 2 is supported by the traversing machine frame 13 to realize arbitrary movement in the X direction (left and right direction). Further, a transverse roller 13 a is provided at both upper and lower ends of the transverse machine frame 13, and the transverse operation belt 14 is stretched in a fixed state along the transverse guide machine frame 12. A timing belt (toothed belt) is applied to the traversing operation belt 14, and the teeth of the belt are provided so as to face the traverse guide machine frame 12. Further, a traverse pinion 15 is provided between the traverse operation belt 14 and the traverse guide machine frame 12 (a pair of upper and lower sides) so that the left and right sides of the traverse pinion 15 are sandwiched from the outside of the traverse operation belt 14. A pair of traverse holding pulleys 16 are provided. As a result, the traverse pinion 15 is configured so that the approximately half circumference thereof meshes with (engages with) the traversing operation belt 14 reliably. The traverse pinion 15 is driven by, for example, a traverse motor MX provided on the upper end side of the traverse machine frame 13. In the figure, reference numeral 17 denotes a connecting shaft 17 for synchronously rotating the traverse pinion 15 provided above and below.

  Here, the traversing operation of the traversing machine frame 13 (moving platform 2) by the lateral movement mechanism SX will be described. First, the traverse motor MX drives the traverse pinion 15 and rotates it. The traverse pinion 15 is engaged with the traverse operation belt 14 by the pair of traverse presser pulleys 16 as described above (see FIG. The meshing state is always maintained, and the traversing operating belt 14 is stretched in a fixed state. For this reason, the traverse pinion 15 rotates while maintaining the engaged state with the traverse operation belt 14, and the traverse pinion 15 moves relatively in the X direction (left and right direction) together with the traverse holding pulley 16. Is.

  Next, members (elements) mainly related to the vertical movement mechanism SY in the movable frame 2 will be described. The longitudinal movement mechanism SY has substantially the same configuration as the lateral movement mechanism SX. Specifically, the longitudinal movement mechanism SY is provided with a longitudinal rail 18 along the transverse machine frame 13. 18, the base plate 20 in the movable gantry 2 is supported so as to be movable up and down, thereby realizing arbitrary movement of the movable gantry 2 in the Y direction (vertical direction). Further, various related members are provided using these as basic members, which will be described in detail below.

  First, two linear bearings 20a for longitudinal movement are provided on the base plate 20 in the front-rear direction of the transverse machine frame 13 (front and rear as viewed from the front side of the apparatus). This is because the vertical movement can be surely and smoothly performed. The longitudinal operating belt 21 is stretched in a fixed state along the traversing machine frame 13, and the belt teeth are also provided so as to face the traversing machine frame 13. Further, a longitudinal pinion 22 is provided between the longitudinal working belt 21 and the transverse machine frame 13, and both upper and lower sides of the longitudinal pinion 22 are sandwiched from the outside of the longitudinal working belt 21. A pair of longitudinal holding pulleys 23 is provided. As a result, the longitudinal pinion 22 is configured so that the approximately half circumference thereof meshes with (engages with) the longitudinal operating belt 21 reliably. The longitudinal pinion 22 is driven by a longitudinal motor MY mounted on the base plate 20.

Here, the vertical movement of the movable mount 2 by the vertical movement mechanism SY will be described. First, when the longitudinal pinion 22 is driven by the longitudinal motor MY, the longitudinal pinion 22 rotates. As in the case of the lateral movement mechanism SX, the longitudinal pinion 22 is driven by the longitudinal holding pulley 23. Since the engagement state with the longitudinal operation belt 21 is always maintained, the rotation is performed while maintaining this state. For this reason, the longitudinal pinion 22 moves relatively in the Y direction (vertical direction) with the longitudinal holding pulley 23.
In the figure, reference numeral 19A is a bendable cable guide that stably guides the power supply cable to the mobile gantry 2 that moves transversely, and reference numeral 19B is a bendable cable that stably guides the power supply cable for longitudinal movement. Cable guide.

  Next, while explaining the members for supporting the machining head 3 in the movable gantry 2, members (elements) involved in the longitudinal movement mechanism SZ will be described. First, as shown in FIGS. 1 and 2, a back-and-forth moving rail 24 is provided on a surface opposite to the traversing machine frame 13 on the base plate 20 (this is the right in the left-right direction) so as to be substantially orthogonal to the work surface. In the vicinity thereof, a front / rear shift screw shaft 25 is provided. The front / rear shift screw shaft 25 is driven by a front / rear shift motor MZ. Specifically, as shown in FIG. 3, from the drive pulley 26 of the front / rear shift motor MZ, the front side of the front / rear shift screw shaft 25 is provided. The rotation is transmitted to the driven pulley 25a provided at the end via the drive belt 27.

In such a configuration, the base plate 20 is a member that serves as a reference (base) when the processing head 3 is moved back and forth, and the base plate 20 itself does not approach / separate the workpiece W, and maintains a certain distance. It moves on the Y plane.
The above-described back-and-forth moving rail 24, the front-and-rear shift screw shaft 25, the front-and-rear shift motor MZ, the driven pulley 25a, the drive pulley 26, the drive belt 27, and the like are members that participate in the front-and-rear movement mechanism SZ (linear to be described later). The bearing 31 and the female thread block 32 are also members involved in the longitudinal movement mechanism SZ).

Next, other members (members not involved in the longitudinal movement mechanism SZ) in the movable mount 2 will be described. First, a push rod 28 is provided to the base plate 20 so as to extend from the front side to the back side in the front-rear direction, more specifically, perpendicularly to the surface of the workpiece W. This is for switching the tool device T described later. That is, the tool switching is performed by a Geneva mechanism, and the push rod 28 is a member for driving the Geneva mechanism, and includes a right-turn push rod 28A and a left-turn push rod 28B of the Geneva mechanism. ("Right turn" and "Left turn" here are rotations when a shift rotor 71 described later is viewed from a plane). The push rods 28A and 28B are fixedly installed by the push rod bracket 280 with respect to the base plate 20 that does not move back and forth, and the arrangement thereof is such that the distance (rotation radius) from the tilting pivot shaft 340 described later is different. It is attached (see FIG. 3).
Reference numeral 29 in the figure denotes a bendable cable guide for stably guiding a power supply cable to the machining head 3 in consideration of the movement (reciprocation) of the machining head 3 in the front-rear direction.

  Next, a description will be given of the machining head 3 supported so as to be movable back and forth with respect to the movable gantry 2, that is, with respect to the workpiece W. Reference numeral 30 in the drawing is a processing head frame for holding the tool support rotating disk 4, which is a frame-like member formed by combining a front plate 301, a side plate 302, an upper plate 303 and a lower plate 304. Among these, the side plate 302 is provided with a linear bearing 31 on the base plate 20 side (left side), which is fitted to the front-rear moving rail 24 to realize the front-rear movement (front-rear sliding) of the processing head mount 30. Further, a female screw block 32 that meshes with the front / rear shift screw shaft 25 is provided in the vicinity of the linear bearing 31 (see the main part explanatory view of FIG. 2).

As described above, the linear bearing 31 and the female screw block 32 are also members (elements) involved in the longitudinal movement mechanism SZ. Hereinafter, the longitudinal movement of the machining head 3 (machining head mount 30) by the longitudinal movement mechanism SZ is described. Will be described.
For this purpose, first, the front / rear shift motor MZ shown in FIG. 3 is driven, whereby the front / rear shift screw shaft 25 rotates via the drive pulley 26, the drive belt 27, and the driven pulley 25a. Next, as shown in FIG. 2, in response to this rotation, the female screw block 32 that meshes with the shaft moves in the Z direction (front-rear direction), and moves the processing head pedestal 30 back and forth relative to the base plate 20.

  Moreover, in the blank processing apparatus 1, the holding direction which will be described later is set so that the working direction of the tool can be set not only in the horizontal and vertical directions along the X and Y axes but also in any direction inclined with respect to these. The bracket 34 (a member that supports the tool support rotating disk 4) is rotatably supported with a rotation axis (tilting swivel shaft 340) along the Z direction as an axis, and in this specification, such holding is performed. The rotation around the Z-axis of the bracket 34 (tool support turntable 4) is particularly referred to as tilting turning, and the mechanism responsible for this is the tilting turning mechanism ST. For this purpose, the rotation shaft is referred to as a tilting turning shaft 340. Hereinafter, the tilting and turning mechanism ST will be described while explaining the holding bracket 34.

  The holding bracket 34 supports the tool support rotating disk 4 on which a tool such as a cutter or a pusher roller is installed, and is supported by a tilt support bearing 33 provided on the front plate 301 of the processing head pedestal 30 so as to be tiltable and turnable. It is what is done. The holding bracket 34 is a member formed so as to project in a bifurcated shape from the front plate 301 toward the back side, and rotatably holds the tool support rotating plate 4 to which various tools are attached. (In the initial state of FIG. 1, the tool support rotating disk 4 is held so that it can rotate around the Y axis). That is, first, the holding bracket 34 is provided with an upper holding plate 341 and a lower holding plate 342 facing each other with respect to the tilting pivot shaft 340 serving as a base. Reference numeral 343 in the figure is a connection plate for attaching the upper holding plate 341 and the lower holding plate 342 at a constant interval, and the holding bracket 34 is formed so as to exhibit a substantially U-shape when viewed from the side. The The tool support rotating disk 4 is rotatably supported in this U-shaped inner space (between the upper holding plate 341 and the lower holding plate 342).

Further, a driven pulley 35 is provided at the front end of the tilt pivot shaft 340, and the rotation from the tool direction setting motor MT mounted on the machining head mount 30 (lower surface plate 304) is transmitted to this. The Here, reference numeral 36 in the figure denotes a drive pulley that is directly driven by the tool direction setting motor MT, and reference numeral 36a denotes a drive belt that transmits drive from the drive pulley 36 to the driven pulley 35.
The tool direction setting motor MT, the drive pulley 36, the drive belt 36a, the driven pulley 35, the tilting turning shaft 340, etc. are mainly involved in the tilting turning (tilting turning mechanism ST) of the holding bracket 34 (tool support rotating disk 4). Hereinafter, the tilting and turning operation of the holding bracket 34 by the mechanism will be described. First, when the tool direction setting motor MT is driven, this drive is transmitted as the rotation of the tilting turning shaft 340 via the drive pulley 36, the drive belt 36a, and the driven pulley 35, whereby the holding bracket that supports the tool support rotating disk 4 is transmitted. 34 tilts and turns.
In this embodiment, the state of the holding bracket 34 shown in FIG. 1 is the initial state (reference), and the holding bracket 34 is rotated clockwise (clockwise) or counterclockwise (counterclockwise) when viewed from the front side. This is also a setting (specification) for tilting and turning by 450 degrees in the direction of. Also, for this reason, the upper and lower holding plates 341 and 342 may be reversed in the vertical positional relationship given as names during the tilting turn (names are given based on the initial state of FIG. 1). Is just a thing).

  Further, a push rod insertion hole 30A is opened in the front plate 301 of the processing head mount 30 (see FIGS. 3 and 4), and the push rod 28 fixed to the base plate 20 by the push rod bracket 280 faces here. Formed as follows. That is, when the machining head 3 (machining head pedestal 30) is withdrawn to the front side, the push rod 28 passes (penetrates) through the push rod insertion hole 30A, as if on the workpiece side (toward the tool support rotating disk 4). B) It has a protruding structure. Of course, the push rod 28 itself is a member fixed to the base plate 20 as described above and does not move back and forth. Therefore, the protrusion is a relative protrusion. Although details will be described later, the push rod insertion hole 30A is also a part (element) involved in the Geneva mechanism (drive) responsible for switching of the tool device T, similarly to the push rod 28 described above.

  In the present embodiment, a limit mechanism SL for limiting the tilt turning angle (rotation limit) of the holding bracket 34 (tool support rotating disk 4) is provided on the machining head 3 (front plate 301). In other words, in the present embodiment, the tilt bracket mechanism ST is configured so that the holding bracket 34 can be rotated about 450 degrees in both the left and right directions (about 5/4 rotation when the holding bracket 34 is viewed from the front side). The mechanism SL regulates not to exceed this limit angle. As a member (element) involved in this limit mechanism SL, a combination of a pair of gears (a sensor gear 37 and a shaft side gear 371 provided on the tilt turning shaft 340 and a limit gear 372 having a larger number of teeth). )) As a main member, and an idle rotor 38 having the same rotational axis as that of the limit gear 372 is provided thereon.

  Here, the idle rotor 38 is used because it is not desired to increase the outer diameter of the limit gear 372. That is, in this embodiment, the tilt angle of the holding bracket 34 (tilt axis 340) is a large rotation angle of about 450 degrees exceeding 360 degrees. Therefore, if the outer diameter of the limit gear 372 is increased, the idle rotor Even if 38 is not used, it is possible to secure a tilt turning angle of about 450 degrees. However, in this embodiment, in order to move the machining head 3 back and forth, if the outer diameter of the limit gear 372 is made too large, it can be considered that this interferes with the base plate 20. In this way, the limit gear 372 is formed to be small.

  Hereinafter, members involved in the limit mechanism SL will be described in more detail with reference to FIG. An operating pin 372 a that protrudes toward the front is formed on the end surface portion of the limit gear 372 in the sensor gear 37. The idle rotor 38 is formed with a passive pin 381 projecting radially in the outer peripheral portion, and the operating pin 372a abuts on the passive pin 381, and the idle rotor 38 is rotated by the abutment. It is something to be made. Further, the idle rotor 38 is formed with a limiter pin 382 that protrudes from the end surface portion to the near side at a position substantially opposite to the passive pin 381, and this directly presses the limit switch 39. The limit switch 39 is attached to the front plate 301 by a switch bracket 390 and is installed on the movement locus of the limiter pin 382 of the idle rotor 38. Incidentally, the idle rotor 38 in a normal state stands by in a state where the passive pin 381 protruding in the outer peripheral direction is positioned below in terms of the overall moment balance. The limit switch 39 includes a pair of a limit switch 39A and a limit switch 39B. Of these, the reference numeral 39A is viewed from the front side (viewed from the front), and the holding bracket 34 (the tool support rotating disk 4). ) Clockwise rotation limit switch for restricting clockwise (clockwise) tilting and turning (limit), and reference numeral 39B indicates counterclockwise (left-handed) tilting of the holding bracket 34 (tool support rotating disk 4). This is a left-turn stop limit switch that regulates turning (limit).

Next, a description will be given of the circumstances (situation) for restricting the tilt turning angle of the holding bracket 34 to 450 degrees by the limit mechanism SL.
First, the tilt turning shaft 340 tilts and turns by driving the tool direction setting motor MT, and the shaft side gear 371 also rotates by an appropriate angle (tilt turning). When the limit gear 372 rotates by an appropriate angle in response to the rotation of the shaft side gear 371 (for example, approximately one rotation), the operating pin 372a of the gear comes into contact with the passive pin 381 of the idle rotor 38 and rotates the idle rotor 38. Let At this time, as the idle rotor 38 rotates, the limiter pin 382 naturally rotates (moves) so as to draw an arc. Therefore, for example, when the idle rotor 38 rotates about a half turn, the limiter pin 382 is turned into one of the limit switches 39A and 39B. The holding bracket 34 (tool support rotating disk 4) is stopped from tilting and turning.
As described above, in the present embodiment, by providing the idle rotor 38, a large tilt turning angle of 450 degrees of the shaft side gear 371 is obtained without excessively increasing the diameter dimension of the limit gear 372, and this is obtained. This is the limit angle for tilting and turning.

  The tilt turning mechanism ST described above mainly sets the direction of operation of the tool in machining, and the limit mechanism SL regulates the limit of the direction of operation of the tool during machining. The tool direction setting mechanism 8 is generally used. That is, the tilt turning mechanism ST and the limit mechanism SL described above substantially constitute a part of the tool direction setting mechanism 8.

The holding bracket 34 is formed so as to be capable of tilting and turning with respect to the front plate 301 by such a tilting and turning mechanism ST and limit mechanism SL. Hereinafter, the holding bracket 34 is attached to the holding bracket 34 and The tool support turntable 4 constituting a part will be described.
As described above, the tool support rotating disk 4 is for attaching the tool device T including a cutter, a muscle push roller, and the like, and is supported by the holding bracket 34 so as to be rotatable. Therefore, the tool support rotating disk 4 is formed in a turntable shape as a whole, and is provided so that the upper surface plate 41 and the lower surface plate 42 face each other, and is configured to be able to rotate on a specific plane around the rotation shaft 43. (In the initial state of FIG. 1, the rotation is about the Y axis). In the figure, reference numeral 44 denotes a distance rod for assembling the upper surface plate 41 and the lower surface plate 42 while maintaining an interval therebetween. A tool device T having various tools (a cutter and several kinds of bracing rollers) is installed between the upper surface plate 41 and the lower surface plate 42 (space). Part 45).

Incidentally, the upper and lower plates 41 and 42 are also tilted and pivoted greatly, so that the upper and lower plates given as names in the situation of tilting and turning are similar to the upper and lower retaining plates 341 and 342. The positional relationship of may be reversed. Of course, during the tilting turn, the rotation axis 43 is also generally deviated from the Y axis (the rotation axis 43 follows the Y axis only when the holding bracket 34 has a tilting turning angle of 180 degrees or 360 degrees). is there).
The lower holding plate 342 of the holding bracket 34 is provided with a cable guide tube 344, which is used when the holding bracket 34 and the tool support rotating disk 4 supported by the holding bracket 34 are tilted and rotated by 450 degrees, for example. This is a member for stably holding or smoothly guiding a power feeding cable for driving.

Next, the tool device T installed on the tool support rotating disk 4 will be described. The tool device T includes a plurality of tools for performing a cutting process or a bracing process, and in this embodiment, as shown in FIG. And a muscle pushing device 6 having a muscle pushing roller. However, since the tool device T only needs to have at least one blade device 5 and a plurality of tool devices T as a whole, the tool device T may have the following configuration.
(a) Configuration in which only one blade device 5 is provided and at least one bracing device 6 is provided (this example corresponds to this)
(b) Configuration in which a plurality of blade devices 5 and bracing devices 6 are provided.
(c) Configuration in which only a plurality of blade devices 5 are used and the bracing device 6 is not used The case where a plurality of blade devices 5 are provided is a case where various cutting processes are to be performed on the workpiece W. It is assumed that each blade device 5 is provided with a dedicated cutter according to such various cutting methods (cutting line L1). Hereinafter, the blade device 5 and the bracing device 6 of the present invention will be described.

  The blade device 5 of the present invention is installed at the center of the tool installation portion 45 in the tool support rotating disk 4, that is, on an appropriate diameter line in the tool support rotating disk 4, and as an example, an apparatus machine frame 50 having a channel-shaped cross section. The cutter driving motor MC is supported outside the side frame plate 501. On the other hand, a guide rail 51 is provided along the longitudinal direction of the side frame plate 501 on the side frame plate 501 (opposite side of the side frame plate 501 to which the cutter drive motor MC is attached). Is provided so as to be reciprocally movable through a linear bearing 521. The blade holder 52 is provided with a cutter blade 53 as a blade body attached to an outer peripheral side end of the tool support rotating disk 4. As the cutter blade 53, a pointed double blade type is applied as an example. . At the time of the cutting process, the cutter blade 53 is processed while moving back and forth in the thickness direction of the workpiece W (while being moved in and out), so that the blade device 5 has a cam device that causes this reciprocating motion. 54 is provided.

  The cam device 54 includes, as main members, a cam main body 55 that is rotationally driven by the cutter drive motor MC and a cam follower 56 that responds to the cam main body 55. First, the cam body 55 is provided with a working rib 551 in an annular shape with respect to a base portion formed with a single-curved curve as an example, and cam lift portions 552 are formed at two opposite positions (FIG. 5B). )reference). The cam lift portions 552 are not necessarily limited to two locations, and may be arranged in an even number of four or more locations at positions that are point-symmetric with respect to the cam shaft (the rotation axis of the cam body 55). Further, the cam follower 56 is provided on the linear bearing 521 as a pair so as to sandwich the action rib 551 from the outer peripheral surface and the inner peripheral surface, and this is used as an inner cam follower 56A and an outer cam follower 56B. Incidentally, the frequency of the reciprocating motion of the cutter blade 53 in the blade device 5 is about 10000 times per minute, and in the case of this embodiment having two cam lift portions 552, at least the rotational speed of the cam body 55 is 5000. It becomes about rotation.

  In consideration of the reciprocating moment of inertia including the blade holder 52 from such an operation, it is preferable to provide a counter balancer 57 on the opposite side of the blade holder 52. That is, the counter balancer 57 is provided in the apparatus machine frame 50 so as to face the blade holder 52, and has substantially the same basic configuration as the blade holder 52. For this reason, the counter balancer 57 is provided with a balancer block 571 on the outer peripheral end side facing the blade holder 52 and reciprocally movable via the linear bearing 572. Further, similarly to the blade holder 52, a pair of cam followers 573 is provided on the linear bearing 572 so as to sandwich the action rib 551, and repeatedly moves in a direction opposite to the blade holder 52 (reciprocating motion), thereby cutting the blade device 5. It is configured to balance the entire vibration.

  In addition, as shown in FIG.5 (c), the thickness t1 of the action rib 551 in the cam main body 55, and the space | interval (space | interval of a pair of cam follower 573) t2 of a pair of cam follower 56 are managed with high precision ( It is managed so as not to generate a gap), and the play at the time of high-speed vibration of the cutter blade 53 is reduced. In this embodiment, in order to maintain the distance t2 between the cam followers 56 (573), as described above, the pair of cam followers 56 (573) are attached to the same member (linear bearings 521/572) and maintained. Yes. However, the present invention is not necessarily limited to such a method. For example, as shown in FIG. 5D, the pair of cam followers 56A and 56B can be biased by the spring SP in the direction in which the action rib 551 is sandwiched. It is.

A work presser 58 is provided on the periphery of the cutter blade 53 so as to always push the work W toward the work support plate 11. This is because when the workpiece W is cut, the workpiece W at the machining site may move back and forth together with the back-and-forth movement (reciprocating motion) of the cutter blade 53 (floating from the workpiece support plate 11 side). Such a fluttering operation) is prevented by the work presser 58.
For this reason, the work retainer 58 preferably has the following structure. First, a holding plate 581 is attached to the upper surface plate 41 and the lower surface plate 42 of the tool support rotating disk 4 so as to be freely opened and closed by a hinge 582, and the holding plate 581 is locked in a closed state by a lock pin 583 during operation. It is held opposite to the surface of the workpiece W. A return pad 584 is provided on the holding plate 581 via a set spring 585. Specifically, a set spring 585 is contracted on the back surface of the return pad 584 so that the return pad 584 is always elastically projected toward the workpiece W side.

  The holding plate 581 and the return pad 584 are formed with a blade hole 586 for allowing the cutter blade 53 to pass therethrough. The size of the blade hole 586 is determined by the cam device 54 to move back and forth (intrusion). Is set so as not to hinder. Incidentally, the holding plate 581 is configured to be openable and closable in consideration of inspection and replacement of the cutter blade 53. At the time of inspection, the lock pin 583 is removed and the holding plate 581 is opened. (The hinge 582 is the pivot shaft), and such maintenance work can be performed efficiently and reliably.

  Next, the bracing device 6 constituting a part of the tool device T will be described. As an example, as shown in FIG. 5, this includes four kinds of muscle push rollers 61, 62, 63, 64. The reason why the various pushing rollers 61, 62, 63, and 64 are provided in this way is that, for example, when a pushing work is performed on the workpiece W, a different broken line L2 is formed depending on how the target portion is folded. Because. Incidentally, reference numerals 61A, 62A, 63A, and 64A are support brackets that hold the rollers in a free rotating state, and the support brackets 61A, 62A, 63A, and 64A are fixedly attached to the tool support rotating disk 4. It is done.

  Here, the tool arrangement of the blade device 5 and the bar pushing device 6, that is, the arrangement of five types of tool main bodies including a kind of cutter blade 53 and four kinds of bar pushing rollers 61, 62, 63, 64 will be described. As an example, as shown in FIG. 5, these are installed at six positions equally distributed with respect to the tool support rotating disk 4 (tool installation unit 45). For this reason, if there is no particular tool, one position is a neutral position. In this specification, the six positions including the neutral position are referred to as an attachment position. Specifically, a pusher roller 63 is provided on the opposite side (on the diameter line) of the tool support rotating disk 4 on which the cutter blade 53 is provided, and is mounted near the pusher roller 63 on a semicircular arc on the cutter drive motor MC side. A muscle push roller 64 is provided at the position. Further, the muscle pressing rollers 61 and 62 are installed at intervals of 60 degrees between the cutter blade 53 and the muscle pressing roller 63 on the opposite semicircular arc on the non-motor side. Note that the specific arrangement of each tool is determined in consideration of the overall weight balance, moment balance, and the like including the operation of the machining head 3 because the machining head 3 tilts and turns.

  Next, a description will be given of the tool selection mechanism 7 that selects and switches a tool suitable for the purpose from such a tool device T. As shown in FIG. 6 as an example, the tool selection mechanism 7 is a mechanism mounted on a holding bracket 34 (upper holding plate 341) that supports the tool support rotating disk 4. In this embodiment, the tool selection rotating disk 4 is used. The positive stop motion at a certain angle is performed by the Geneva mechanism. As will be described later, this tool selection mechanism 7 is usually provided with a dedicated motor or the like for driving the Geneva mechanism in order to switch the tool by intermittently rotating the Geneva wheel 70. In the present embodiment, the Geneva wheel 70 is intermittently rotated (shifted) by moving the processing head 3 to the near side (by moving it to a position not used in normal cutting or pushing). ) For this reason, in this embodiment, there is no special motor for tool selection, and the front / rear shift motor MZ for moving the machining head 3 in the Z direction substantially performs this function.

  Details of the tool selection mechanism 7 will be described below. First, the Geneva wheel 70 that rotates together with the tool support rotating disk 4 is attached to the upper end of the rotating shaft 43 in the tool supporting rotating disk 4 (above the holding bracket 34). Such a Geneva mechanism is an indexing mechanism that performs positioning by rotating intermittently by a certain angle (generally 60 degrees) as is well known, and the Geneva wheel 70 includes, for example, the number of tools (this embodiment) Then, six Geneva grooves 701 corresponding to a total of six attachment positions including the neutral position are formed. On the other hand, the shift rotor 71 for driving the Geneva wheel 70 is rotatably supported by the upper holding plate 341 of the holding bracket 34, and this includes a shift pin 711 that meshes with the Geneva groove 701. .

  Further, the shift rotor 71 includes a pinion gear 72 at the upper end of the rotor shaft 71A. The pinion gear 72 includes a pair of gears so that the tool support rotating disk 4 can be rotated clockwise (clockwise) / counterclockwise (counterclockwise) as viewed from above. The one that rotates the shift rotor 71 clockwise as viewed from above is the right-turning pinion gear 72A (upper gear in FIG. 6), and the one that rotates counterclockwise is the left-turning pinion gear 72B (lower in FIG. 6). Gear). The “right turn” / “left turn” mentioned here is described mainly with respect to the shift rotor 71 (this is a rotation viewed from the plane), and this makes one turn and intermittently causes the Geneva wheel 70 to rotate. In consideration of the rotation, the rotation direction of the Geneva wheel 70 is reversed.

The right-turning pinion gear 72A and the left-turning pinion gear 72B are rotated only in one direction by an internal one-way clutch. That is, the pinion gear 72 responds to the shift rotor 71 only during driving (during operation rotation), maintains a free state when returning, and does not reversely rotate the shift rotor 71.
Each of the pinion gears 72A and 72B is provided with a pinion rack 73 that meshes in a circumscribing state, and this is also referred to as a right-turning pinion rack 73A and a left-turning pinion rack 73B. The pinion rack 73 is supported so that the rack holder 731 fixed to the upper holding plate 341 of the holding bracket 34 can reciprocate in the front-rear direction, and the rack end 732 has a recessed shape at the center. It is formed and configured as a receiving portion for the push rod 28 described above. Each of the pinion racks 73A and 73B is always urged by a return spring 74. When the pinion racks 73A and 73B are not normally pushed by the push rod 28, the standby portions 73a and 73b of the pinion racks 73A and 73B are In this case, the pinion gears 72A and 72B are always set (returned). The return spring 74 is stretched between the spring hook 741 on the pinion rack 73 side and the spring hook 742 on the upper holding plate 341 in the holding bracket 34.

  Further, in this embodiment, the pinion gears 72A and 72B are installed in two upper and lower stages with respect to the upper holding plate 341. In other words, the pinion racks 73A and 73B are installed in a stepped manner, which is shown in FIG. This is because the distances (turning radii) of the pinion racks 73A and 73B from the tilt turning shaft 340 are made different from each other, as shown. That is, the distance from the tilt turning shaft 340 to the right turning pinion rack 73A is set to be the same as the distance from the tilt turning shaft 340 to the right turning push rod 28A, and from the tilt turning shaft 340 to the left turning pinion rack 73B. The distance is set to be the same as the distance from the tilt turning shaft 340 to the left-turn push rod 28B, and both racks are installed in steps. Incidentally, in FIG. 3, the corresponding turning radii are slightly different in the drawing because the work W, that is, the front plate 301 is inclined by 70 degrees (from the tilting pivot shaft 340 to the pinion rack 73). The distance is projected short).

1, 2, 4 and 6 show the state of the pinion rack 73A when it is pushed by the push rod 28A. The push rod 28 is pushed by the pinion racks 73A and 73B. Since the tool support turntable 4 (holding bracket 34) is tilted and turned to the position corresponding to 28B (push rod insertion hole 30A) (see FIG. 7), the pinion rack 73A in the initial state shown above is used. The pressing operation does not occur originally. Of course, since the pinion rack 73A is normally always returned to the standby part 73a by the return spring 74 as described above, it does not continue to maintain such a pushing state.
Further, as shown in the plan view of the main part of FIG. 6, the shift pin 71 in the shift rotor 71 is not engaged with the Geneva groove 701 of the Geneva wheel 70 in a normal state (when the Geneva wheel 70 is intermittently rotated). The retaining bracket 34 is preferably provided with a positioning for resetting the shift rotor 71 after one rotation to a fixed position (for example, the plan view of the main part in FIG. 6).

  Next, the tool direction setting mechanism 8 will be schematically described. The tool direction setting mechanism 8 is a mechanism that appropriately sets the action direction of the tool with respect to the workpiece W according to machining, and restricts the action limit as the tilt turning angle. In this embodiment, the tilt turning mechanism is as described above. It comprises ST and limit mechanism SL. In other words, the tool support turntable 4 (holding bracket 34) is tilted and turned by the tilt turning mechanism ST so that the direction of operation of the tool body is appropriately set, and the tool support turntable 4 (holding bracket 34) is set by the limit mechanism SL. ) Is restricted to limit the direction of action (tilt turning) of the tool body. The operation mode of this mechanism will be described later.

The blank processing apparatus 1 has the basic structure described above. Hereinafter, an operation mode of processing the product blank B from the workpiece W by this apparatus will be described, and in addition, the cutting process by the blade apparatus 5 of the present invention will be described. The operation mode of will be described.
[1] First train / preparation state <Work setting>
First, the work W is installed prior to the actual work. In this embodiment, the work W to be processed is placed on the work support plate 11 that is raised at an inclination of about 70 degrees from the horizontal plane. is there. At this time, the work W can be supported by vacuum (suction) from the back side of the work support plate 11. When performing such suction holding, if a felt sheet 11a having air permeability, for example, is sandwiched between the workpiece support plate 11 and the workpiece W, the suction holding is not hindered, and the cutter blade It also functions as a buffer when 53 cutting edges or the like come into contact with the workpiece W.

<Initial state of machining head>
On the other hand, the machining head 3 responsible for substantial machining, on the other hand, is input based on, for example, data such as CAD. Wait at the origin position of the system. Of course, the machining head 3 can also set an appropriate position other than the origin as the initial position according to the user's special specification.
In this initial state, a suitable tool (for example, the push roller 62 located at the center of the five types of tools) normally faces the work W at a certain distance from the work W (body surface). Generally, it is set to. For this reason, if this tool is the first tool to be machined, the initial tool selection is not performed, but if this tool is not the first tool to be machined, the tool selection mechanism 7 is operated (function) in this initial state. ) To select (switch) the target tool. Of course, the tool selection can also be performed after moving the movable gantry 2 to a target machining position (appropriate position on the XY plane) (detailed operation of the tool selection will be described later).
Further, in this initial state, the tilt turning angle of the tool support rotating disk 4 is set to 0 degree (the initial state shown in FIG. 1 and the like), and the rotation axis 43 of the tool support rotary disk 4 is substantially set to the Y axis. .

[2] Movement to the machining position After that, the tool facing the workpiece W moves the machining head 3 to the target machining position while maintaining a certain distance from the workpiece W. This includes a lateral movement mechanism SX. And the vertical movement mechanism SY are actuated (functioned).
First, in the lateral movement (lateral movement mechanism SX), the traverse pinion 15 is rotated by driving the traverse motor MX. Here, since the pinion is always maintained in engagement with the transverse operation belt 14 stretched in a fixed state, the pinion moves in the lateral direction with the pair of transverse holding pulleys 16, thereby the transverse machine frame 13. That is, the machining head 3 moves to an arbitrary position in the X direction.
As for the vertical movement (vertical movement mechanism SY), the vertical pinion 22 is rotated by driving the vertical motor MY as in the horizontal movement. Again, the pinion moves to an appropriate position in the Y direction with a pair of longitudinal holding pulleys 23 so that the engaged state is always maintained with the longitudinal operating belt 21 stretched in a fixed state. Thus, the movable gantry 2, that is, the machining head 3 moves to an arbitrary position on the XY plane.

In addition, here, for convenience of explanation, it has been described as if the horizontal movement and the vertical movement are performed separately, but these may be performed simultaneously, and if they are performed separately, whichever is performed first. It doesn't matter.
In the present embodiment, the two-dimensional movement of the machining head 3 with respect to the workpiece W fixes the workpiece W completely, and moves the movable mount 2 to an arbitrary position in the XY direction with respect to the workpiece W. It is realized by moving. However, since the two-dimensional movement of the machining head 3 may be in a relative relationship with the workpiece W (because the operation is substantially the same), for example, the workpiece W is moved while being transferred only in one direction in the X direction. The gantry 2 may be configured to move only in the Y direction.

[3] Selection of tool device As described above, the tool device T can be selected (switched) after the machining head 3 is moved to an arbitrary position on the XY plane. Will be described. In the description, for example, the pusher roller 62 is in a state of facing the workpiece W (see FIG. 2), and the pusher roller 61 at a position of 60 degrees on the right side in plan view is selected from this state. Will be described. In this case, the tool support rotating disk 4 is rotated 60 degrees counterclockwise (counterclockwise), and this is an operation of turning the Geneva wheel 70 counterclockwise by one pitch in the Geneva groove 701. As described above, this operation is an operation of rotating the shift rotor 71 once in the clockwise direction (turning to the right) when viewed with the shift rotor 71. Therefore, in this case, the right-turn pinion rack 73A and the right-turn pinion gear 72A are operated to perform the right turn of the shift rotor 71 (60-degree left turn of the Geneva wheel 70).

  At this stage, as described above, the tool device T (here, the presser roller 62) is normally in a position where it does not interfere with the workpiece W, so that the tool selection operation can be performed as it is. In the case of performing the above, first, the tool device T is sufficiently retracted, and the tool is set so that the tool does not contact the workpiece W even if the tool support rotary disk 4 is tilted and turned. Then, the tool direction setting motor MT in the tilt turning mechanism ST is driven to tilt and turn the tool support rotating disk 4 (holding bracket 34). The tilt rotation of the tool support rotating disk 4 is performed until the right-turn pinion rack 73A coincides with the right-turn push rod 28A (see the two-dot chain line in FIG. 3 and the perspective view in FIG. 7). Of course, the push rods 28A and 28B are both provided so as to face the push rod insertion hole 30A, and are formed so as to protrude from the push rod insertion hole 30A toward the workpiece (relative protrusion). In the state of turning, the right-turning pinion rack 73A is aligned with the right-turning push rod 28A through (through) the push rod insertion hole 30A, so that it can be pushed in. At this time, when the shift operation to one side is performed, it is set in advance so that the other shift operation is not performed. For this reason, in the case of the above-described operation in which the shift for the right turn is performed, the pinion rack 73B for the left turn is set in advance so as not to coincide with the push rod 28B. Incidentally, the tilt turning of the tool support rotary disk 4 is set to the left and right tilt turning angles with the initial state shown in FIG. 1, that is, the state where the rotation shaft 43 is in the Y-axis direction as the starting state.

In this state, the front / rear shift screw shaft 25 is driven by driving the front / rear shift motor MZ in the front / rear movement mechanism SZ, so that the entire processing head pedestal 30 (processing head 3) is retracted to the front side. At this time, the push rod 28 is fixed to the base plate 20 that does not move back and forth, and its relative position does not change. Therefore, the retreating operation of the machining head pedestal 30 is an operation (relative approach) that protrudes from the push rod insertion hole 30A toward the right-turning pinion rack 73A from the right-turning push rod 28A, and eventually the right-turning pinion rack 73A ( The rack end 732) is pushed inward (the state of the right-turning pinion rack 73A pushed in at this time is the state shown in FIGS. 1, 2, 4 and 6).
By such relative pushing of the right-turning pinion rack 73A to the work side by the right-turning push rod 28A, the right-turning pinion gear 72A is turned to the right, and the shift rotor 71 is rotated once in the clockwise direction. Then, the shift pin 711 rotates the Geneva groove 701 in the Geneva wheel 70 to the left by one pitch (60 degrees), and the tool support rotating disk 4 rotates 60 degrees counterclockwise (counterclockwise). That is, the tool facing the workpiece W is converted to the muscle push roller 61.

  After the tool is selected, the entire machining head pedestal 30 (machining head 3) is now advanced to the back side, and the relative pushing by the right-turning push rod 28A is released. At this time, the right-turning pinion rack 73A naturally returns to the standby portion 73a by the urging force of the return spring 741. When the right-turning pinion rack 73A returns (during reverse movement), the right-turning pinion gear 72A meshed with the right-turning pinion rack 73A is reversely rotated (counterclockwise rotation). However, the pinion gear 72 is a one-way clutch. Since the structure is adopted, the shift rotor 71 is not reversed (left-turned).

In this way, one back-and-forth sliding (shift operation) of the pinion rack 73A causes the pinion gear 72A for right rotation and the shift rotor 71 to make one clockwise rotation (right rotation). This causes the Geneva groove 701 in the Geneva wheel 70 to be rotated. The tool will be turned to the left by one pitch (60 degrees), and finally the tool device T (tool support rotating disk 4) will be turned to the left by one pitch (60 degrees). .
Therefore, if it is desired to further select the blade device 5 (cutter blade 53) after this, the Geneva mechanism is operated in the same direction, and the tool support rotating disk 4 is further rotated counterclockwise by 60 degrees. .
In the present embodiment, as described above, the tool support rotating disk 4 is intermittently rotated to switch the tool device T. However, an ATC (automatic tool changer) mode in which only the tool body is replaced is used. It is also possible to adopt. That is, when there are a plurality of types of muscle push rollers as in the above embodiment, it is possible to share only the support bracket and replace only the rollers. Of course, this is also a concept that can be applied to the blade device 5, and when a plurality of types of cutter blades are provided, only the cutter blades can be replaced. However, in the case of the line pushing process, since the longitudinal movement in the thickness direction of the workpiece W is not given to the line push roller, it is considered impractical to replace the line push roller and the cutter blade.
After such a tool selection operation is completed, it is possible to return the tool support rotating disk 4 to the initial state by tilting and turning again, but this operation for returning the tilting and turning angle to 0 degrees is performed thereafter. It is also possible to make arrangements for setting the tool direction. In other words, the direction of bracing and incision processing is not necessarily limited to the vertical and horizontal directions.For example, when the machining is often performed with the tool direction inclined, the tilt turning angle is not returned to the initial state. It is possible to perform efficient machining (setting) by maintaining the tilt turning state of the tool support rotating disk 4 until the subsequent tool direction setting stage.

In the above embodiment, the case where the pinion rack 73A for the right turn is operated to turn the tool support turntable 4 to the left by 60 degrees intermittently (one clockwise rotation in the shift rotor 71) has been described. Naturally, if the pinion rack 73B for turning left is operated, the tool support rotating disk 4 can be intermittently turned to the right by 60 degrees (one turn counterclockwise in the shift rotor 71). In the selection, it is possible to intermittently rotate the tool support rotary disk 4 closer.
However, in this embodiment, since there is a neutral position where no tools are attached in the attachment position, when the stopper 41a is provided so that the neutral position does not face the workpiece W. Since the tool support rotary disk 4 cannot be intermittently rotated through the stopper 41a, the tool selection may be performed by intermittently rotating the tool support rotary disk 4 in a fixed direction even in the case of a long turn. Incidentally, for example, as shown in FIG. 2, the stopper 41 a is provided in a portion of the upper surface plate 41 opposite to the neutral position (here, in the vicinity of the attachment position of the muscle pushing roller 62).
By such an operation, an appropriate tool device T corresponding to the target machining is selected and is made to face (face) the workpiece W.

[4] Bracing process After that, in the actual work, it is possible to precede the cutting process or the bracing process, or the order suitable for various situations can be considered. When the outer shape (contour) of the blank B is separated from the work W (waste blank W0) all around, the holding of the product blank B itself (adsorption by the work support plate 11) becomes unstable, and the subsequent product blank B Since it is predicted that the bracing process to be performed cannot be performed accurately, it is considered realistic to precede the bracing process in practice. Of course, it is conceivable that a part of the cutting process is performed prior to or along with the pushing process.
In performing the push-in process, when folding each part, that is, when the product blank B is three-dimensionally formed, each part is valley-folded, mountain-folded, or a 45-degree bending angle therebetween, or Depending on whether it is folded 180 degrees so as to be completely folded, various bracing processes are performed. For this purpose, the present embodiment also includes various muscle pressing rollers 61, 62, 63, 64.

[5] Setting the tool direction of the push-pushing process During the push-pushing process, the two-dimensional movement of the machining head 3 is performed by moving the moving base 2 on the XY plane by the horizontal movement mechanism SX and the vertical movement mechanism SY as described above. However, in the case of performing the bracing process in an oblique direction inclined with respect to the X axis or the Y axis, the tool direction setting motor MT is driven by an appropriate computer instruction, and the tool is moved. The support turntable 4 is tilted and turned to set the bracing device 6 in a desired direction.
After setting the direction of action in this way, the machining head 3 is moved to the back side, the tool (muscle pushing device 6) is pushed into the workpiece W, and an appropriate broken line L2 is formed while maintaining the pushing amount. Go. Of course, since the direction of the bracing device 6 set here is the initial setting, when this setting is changed to form the same type of broken line L2 in another direction, the initially set bracing process is performed. In the middle, the direction of action is changed as appropriate. In other words, in this case, the tool support rotary disk 4 is tilted and rotated appropriately during the pushing operation to change the orientation of the pushing device 6.

[6] Cutting process Thereafter, in order to change to the cutting process, first, the processing head 3 is withdrawn to the front side, and the bracing device 6 (muscle pushing roller) is separated from the workpiece W. This retreat operation is performed to a position where the brace 6 does not come into contact with the workpiece W even if the tool support rotating disk 4 is tilted and turned.
Thereafter, tool selection (switching) is performed before or after the machining head 3 is moved two-dimensionally to the start position of the cutting operation. For this purpose, as described above, the tool support turntable 4 (holding bracket 34) is pivoted as a whole and switched from the bracing device 6 to the blade device 5 (cutter blade 53) by the Geneva mechanism.
Then, after the tool is selected, the tool support rotating disk 4 is tilted and turned again, and the direction of action of the cutter blade 53 is set. The tilt turning here is the setting of the first cutting angle with respect to the workpiece W, and it is general that this angle is appropriately changed during the cutting process. Therefore, during the cutting process, the tool support rotating disk 4 is tilted and turned as appropriate to change the direction of the cutter blade 53.

Next, the mode of cutting of the cutter blade 53 itself will be described. As already described, the cutter blade 53 of the blade device 5 reciprocates the workpiece W, for example, about 10,000 times per minute, and the operation is performed by the cam device 54. As technical difficulties at this time, it is necessary to make the reciprocating stroke of the cutter blade 53 relatively large, and the number of operations per minute of the reciprocating motion is extremely large. That is, as shown in FIG. 5, the reciprocating motion of the cutter blade 53 uses a cutter drive motor MC as a drive source, and includes an inner cam follower 56A and an outer cam follower 56B sandwiching the action rib 551 of the cam body 55. The blade holder 52 is caused to reciprocate by shifting. At this time, the counter balancer 57 is reciprocated so as to face the blade holder 52 to obtain a mechanical dynamic balance as the blade device 5 so that the entire cam device 54 does not become unreasonable.
Then, the processing head 3 is moved as a whole while the cutter blade 53 that performs such reciprocating motion is pierced into the workpiece W, so that a cutting line L1 that meets the purpose is formed in the workpiece W. Note that the cut line L1 does not necessarily have to be connected to one line (it does not have to be connected from the cut start point to the cut end point). For example, the short cut line L1 has a constant interval. It may be formed in a so-called perforated pattern.

Further, during the cutting process, the workpiece W may be lifted from the workpiece support plate 11 following the reciprocating motion of the cutter blade 53, in particular, the return operation of the cutter blade 53 (as if the cutter blade 53 is a workpiece). In this embodiment, in order to prevent this, a work presser 58 that always presses the work W against the work support plate 11 is applied. That is, the work presser 58 constantly biases the return pad 584 so as to be biased toward the tip side of the cutter blade 53, that is, the work W side by the action of the set spring 585. Of course, the movement of the cutter blade 53 is performed without any trouble due to the presence of the blade hole 586 of the work presser 58. The return pad 584 is not limited to such a single plate-like member, and may be a number of independent members. In short, it is sufficient that the work W can be pressed around the cutter blade 53. .
In addition, the cutter blade 53 is a main member that performs a cutting operation, and inspection or replacement thereof is required at regular intervals. A holding plate 581 is formed to be openable and closable.

[7] Specific Example of Tool Direction Setting in Cutting Process The cutting direction of the cutter blade 53 can be changed at a large angle fairly continuously during the cutting process. Here, as shown in FIG. 1, a case will be described in which a recessed portion b1 (such as a handle) is cut out in the product blank B. In addition, since the cutter blade 53 is a pointed double-edged blade type, it is formed so that the distance between the two blades increases toward the root (held portion). For this reason, some corners of the hollow portion b1 are formed. A corner R is additionally formed (here, A, B, C, D, E, F, G, H are attached to each bending point).
When cutting out such a hollow portion b1, for example, when cutting between B and C starting from the R stop at point A, the cutter blade 53 is rotated 90 degrees clockwise when cornering point B. Then, when cutting between the points CD, the corner C is further rotated 90 degrees clockwise (in this state, the cutter blade 53 is rotated clockwise as viewed from the cutting start point). It has been rotated 180 degrees). Next, when cornering D-E, when cornering point D, further rotate 90 degrees clockwise (total rotation of 270 degrees), and when cornering E-F, when cornering point E Further, it is rotated 90 degrees clockwise (a total rotation of 360 degrees). Next, when cutting between FG, when cornering the point F, it is further rotated 90 degrees clockwise (a total rotation of 450 degrees). In the present embodiment, the tilt rotation of the tool support rotating disk 4 is configured to be able to rotate 450 degrees in both clockwise and counterclockwise directions. (Processing exceeding 360 degrees in total) can be efficiently performed.

  Of course, the same processing can be performed even when the tilt rotation of the tool support rotating disk 4 is set up to 360 degrees on one side. For example, in the above example, the cutter blade 53 that has reached a total rotation of 360 degrees when cornering the E point when cutting between E and F is once removed in front of the F point, and the tilt turning angle is 0 degree. In this case, the cutting process is resumed and the cutting process is resumed. When cornering the point F, the cutter blade 53 is rotated 90 degrees clockwise to perform the cutting between FG. However, in such a process, the cutting process may have to be interrupted (the continuous cutting process may not be performed), and thus it cannot be denied that the work efficiency is lowered. In other words, in this embodiment, in consideration of this, it can be said that a large tilt turning angle exceeding 360 degrees is ensured in both clockwise and counterclockwise directions.

[8] Limit regulation of tool rotation (tilting and turning) Further, in this embodiment, a limit mechanism SL that restricts the tilting and turning angle of the tool support rotating disk 4 from exceeding 450 degrees is provided in this configuration. ing. This limit mechanism SL stops its rotation when the tilt turning angle of the tool support turntable 4 (holding bracket 34) reaches 450 degrees, and this operation will be described below.
As this operation, for example, as shown in FIG. 4, when the limit gear 372 rotates by an appropriate angle in response to the tilting rotation of the shaft side gear 371 (for example, approximately one rotation), the operation pin 372 a of the gear rotates the idle rotor 38. Abutting on the passive pin 381, the idle rotor 38 starts to rotate. When the idle rotor 38 starts to rotate, the limiter pin 382 naturally rotates (moves) so as to draw an arc. Therefore, for example, when the idle rotor 38 rotates about a half turn, the limiter pin 382 contacts one of the limit switches 39A and 39B. The holding bracket 34 (tool support rotating disk 4) is stopped in contact with the tilting turn.

[9] Removal of Product Blank As described above, when all of the pushing and cutting processes are completed, the machining head 3 is withdrawn to the front side, and the tool device T (cutter blade 53) is separated from the workpiece W. The machining head 3 is then returned to the original position and generally waits for the next machining.
Further, with such an operation, the suction holding by the work support plate 11 that has fixedly installed the work W is also released, and the product blank B is taken out from the work W. Thereafter, the waste blank W0, which is a blank portion, is also removed from the work support plate 11, and the entire series of processing is completed.

It is a perspective view which shows the blank processing apparatus provided with the blade apparatus of this invention, and explanatory drawing which shows the product blank obtained by this blank processing apparatus. It is a top view which mainly shows the movable mount frame in a blank processing apparatus. It is a front view same as the above. It is a perspective view which mainly shows the tilt turning mechanism and limit mechanism in a blank processing apparatus. The perspective view (a) which shows the tool apparatus in a blank processing apparatus, explanatory drawing (b) and (c) which looked at the cam main body of a blade apparatus from the front and a plane, and the space | interval of a pair of cam follower which pinches | interposes an action rib are hold | maintained. It is explanatory drawing (d) which showed the other method. It is a perspective view which shows the tool selection mechanism by a Geneva mechanism, and explanatory drawing which shows the relationship between a Geneva wheel and a shift rotor. It is a perspective view which shows the tilting turning condition of the tool support rotary disk in the case of performing tool selection (switching) by applying a right-turn push rod.

Explanation of symbols

1 Blank processing equipment (blank processing equipment from sheet-like workpiece)
DESCRIPTION OF SYMBOLS 2 Moving mount 3 Processing head 4 Tool support rotary disk T Tool apparatus 5 Tool apparatus 6 Bracing apparatus 7 Tool selection mechanism 8 Tool direction setting mechanism 10 Apparatus frame 11 Work support plate 11a Sheet 12 Traverse guide machine frame 13 Traverse machine frame 13a Traverse Roller 14 Crossing operation belt 15 Crossing pinion 16 Crossing holding pulley 17 Connection shaft 18 Longitudinal rail 19A Cable guide 19B Cable guide 2 Moving platform 20 Base plate 20a Longitudinal linear bearing 21 Longitudinal operation belt 22 Longitudinal pinion 23 Longitudinal holding pulley 24 Front / rear moving rail 25 Front / rear shift screw shaft 25a Driven pulley 26 Drive pulley 27 Drive belt 28 Push rod 28A Right turn push rod 28B Left turn push rod 280 Push rod block Cket 29 cable guide 3 processing head 30 processing head mount 301 front plate 302 side plate 303 upper surface plate 304 lower surface plate 30A push rod insertion hole 31 linear bearing 32 female screw block 33 tilt support bearing 34 holding bracket 340 tilt pivot shaft 341 upper holding plate 342 Lower holding plate 343 Connection plate 344 Cable guide tube 35 Driven pulley 36 Drive pulley 36a Drive belt 37 Sensor gear 371 Shaft side gear 372 Limit gear 372a Actuation pin 38 Idle rotor 381 Passive pin 382 Limiter pin 39 Limit switch 39A Limit switch for right-handed rotation stop 39B Limit switch for turning to the left 390 Switch bracket 4 Tool support rotating disk 41 Upper surface plate 41a Stopper 42 Lower surface plate 43 Rotating shaft 44 Dis 5 Rod tool 45 Tool installation part 5 Blade device 50 Machine frame 501 Side frame plate 51 Guide rail 52 Blade holder 521 Linear bearing 53 Cutter blade 54 Cam device 55 Cam body 551 Action rib 552 Cam lift part 56 Cam follower 56A Inner cam follower 56B Outer cam follower 56B Balancer 571 Balancer block 572 Linear bearing 573 Cam follower 58 Work clamp 581 Holding plate 582 Hinge 583 Lock pin 584 Return pad 585 Set spring 586 Blade hole 6 Muscle pusher 61 Muscle pusher roller 61A Support bracket 62 Muscle pusher 62A Support bracket 63 Muscle pusher Roller 63A Support bracket 64 Muscle pusher 64A Support bracket 7 Tool selection mechanism 70 Genevajo Yel 701 Geneva groove 71 Shift rotor 711 Shift pin 71A Rotor shaft 72 Pinion gear 72A Right-turn pinion gear 72B Left-turn pinion gear 73 Pinion rack 73A Right-turn pinion rack 73B Left-turn pinion rack 73a Standby section 731 Rack end 7331 Rack end 741 Spring hook 742 Spring hook 8 Tool direction setting mechanism T Tool device W Workpiece (sheet-like workpiece)
W0 Waste blank B Product blank b1 Hollow section L1 Cut line L2 Folding line MX Horizontal traverse motor MY Longitudinal motor MZ Front / rear shift motor MT Tool direction setting motor MC Cutter drive motor SX Lateral movement mechanism SY Vertical movement mechanism SZ Longitudinal movement mechanism ST Tilt Swing mechanism SL limit mechanism SP spring t1 thickness (working rib)
t2 interval (for a pair of cam followers)

Claims (3)

A device that performs cutting while moving the cutter blade attached to the blade holder back and forth in the thickness direction of the workpiece by a cam device for a sheet-like workpiece,
The cam device includes a cam body that is rotationally driven by a cutter drive motor, and the cam body is formed by continuously forming a working rib in a circumferential shape.
The blade holder is provided with a pair of cam followers that sandwich the action rib from the inside and the outside,
A counter balancer is provided on the opposite side of the blade holder, and the counter balancer is also provided with an inner side of the action rib at a cam lift portion that is point-symmetric with the cam follower on the blade holder side with respect to the rotation axis of the cam body. A pair of cam followers sandwiched from the outside is provided,
When the cutter blade is moved back and forth, the cam body is rotated by the cutter drive motor, the cam follower on the blade holder side is reciprocated to move the cutter blade back and forth, and the cam follower on the counter balancer side on the opposite side of the blade holder. A blade device for machining a sheet-like workpiece, wherein the counter balancer is moved back and forth repeatedly in a direction opposite to the blade holder.
2. The blade device for machining a sheet-like workpiece according to claim 1, wherein the cutter blade is a pointed double-edged blade type.
  The blade device for processing a sheet-like workpiece according to claim 1 or 2, wherein a workpiece presser that always presses the workpiece against the tip side of the cutter blade is provided around the cutter blade.

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