JP4470082B2 - Displacement mechanism of moving vise - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a displacement mechanism of a moving vise, and more specifically, a long bar-shaped workpiece is gripped by a moving vise and intermittently fed along a pass line, and the fed workpiece is gripped by a fixed vise. Then, in a workpiece processing apparatus that processes the workpiece by a workpiece processing means such as a circular saw, the vice is rubbed against the workpiece when the workpiece is fed by the moving vise or when the moving vise is retracted. The present invention relates to an improvement of a displacement mechanism of a moving vice that can effectively prevent damage.
[0002]
[Prior art]
For example, when a long bar-shaped steel material (work) is sequentially cut at a fixed size, a bar cutting device 10 as shown in FIG. 10 is generally used. This bar cutting device 10 includes a fixed vise 14 disposed along a horizontal pass line PL through which a long bar 12 passes, a moving vise 16 disposed upstream of the fixed vise 14, It is basically composed of a circular saw 18 disposed on the downstream side of the fixed vise 14. Here, the fixed vise 14 is fixedly provided at an appropriate position along the pass line PL, and includes a first fixed jaw 20 and a first movable jaw 22 that hold and release the bar 12 as a workpiece. That is, as can be seen from FIG. 10, the first fixed jaw 20 is in contact with the first side reference surface 20 a that abuts the side of the bar 12 and provides a vertical reference surface, and the bottom of the bar 12. And a first bottom reference surface 20b that contacts and provides a horizontal reference surface. The first movable jaw 22 is attached to a piston 26 of a double-acting cylinder 24 that is horizontally disposed at an appropriate position of the first fixed jaw 20, and approaches and separates from the first side reference surface 20a at a required timing. Thus, the bar 12 can be grasped and released.
[0003]
The moving vice 16 is positioned upstream of the fixed vice 14 in the pass line PL, and is driven forward and backward along the pass line PL by a drive source (not shown), thereby moving forward and backward with respect to the fixed vice 14. It is free. Similar to the fixed vise 14, the moving vise 16 also includes a second fixed jaw 28 and a second movable jaw 30 that hold and release the bar 12. That is, as can be seen from FIG. 10, the second fixed jaw 28 is in contact with the second side reference surface 28 a that abuts on the side of the bar 12 and provides a vertical reference surface, and the bottom of the bar 12. And a second bottom reference surface 28b that provides a horizontal reference surface in contact therewith. The second movable jaw 30 is attached to a piston 34 of a double-acting cylinder 32 that is horizontally disposed at an appropriate position of the second fixed jaw 28, and approaches and separates from the second side reference surface 28a at a required timing. Thus, the bar 12 can be grasped and released.
[0004]
The first side reference surface 20a and the first bottom reference surface 20b of the first fixed jaw 20 in the fixed vise 14 are L-shaped when viewed from the direction aligned with the pass line PL, and similarly the moving vise 16 The second side reference surface 28a and the second bottom reference surface 28b of the second fixed jaw 28 are also L-shaped. The first side reference surface 20a and the first bottom reference surface 20b and the second side reference surface 28a and the second bottom reference surface 28b, which are L-shaped, are perpendicular to the pass line PL in the alignment direction. The reference plane and the horizontal reference plane are set to levels that match each other.
[0005]
Further, as shown in FIG. 10, the circular saw 18 is located downstream of the fixed vise 14 in the pass line PL. The circular saw 18 can move forward and backward in a direction crossing the pass line PL, and can cut the bar 12 held by the fixed vice 14. In the embodiment of the present application, the circular saw 18 is provided as the workpiece machining means. However, it goes without saying that various machining means can be adopted depending on the type of the workpiece 12 to be machined.
[0006]
Next, operation | movement of the bar cutting device 10 which concerns on such a structure is demonstrated. FIG. 11 is an explanatory diagram showing the behaviors of the stationary vice 14 and the moving vice 16 when the bar cutting device 10 is operated in stages (a) to (d). That is,
(1) In step (a), the moving vise 16 holding the bar 12 moves forward by a required distance, and feeds the bar 12 into the fixed vise 14 waiting for release. The circular saw 18 is retracted and is waiting.
(2) In step (b), the fixed bar 14 (the first movable jaw 22 is closed) grips the fed bar 12 and the movable vice 16 moves the second movable jaw 30 to the bar in its forward position. 12 is released. The circular saw 18 is still waiting in the retracted position.
(3) In step (c), the circular saw 18 moves forward and cuts the bar 12 held by the fixed vise 14 with a fixed length. The moving vise 16 moves backward by a required distance with the second movable jaw 30 opened.
(4) In step (d), the circular saw 18 returns to the retracted standby position, and the fixed vise 14 releases the first movable jaw 22 and releases the bar 12. In addition, the moving vise 16 closes the second movable jaw 30 in the retracted position and grips the bar 12.
Thus, by repeating the steps (1) to (4), the bar 12 held by the fixed vise 14 is cut and the bar 12 held by the moving vice 16 is supplied. The
[0007]
[Problems to be Solved by the Invention]
The bar cutting apparatus 10 of FIG. 10 encounters the following difficulties in the steps (a) and (c) of FIG. That is, in the step (a) of FIG. 11, the moving vice 16 holding the bar 12 moves forward, so that the bar 12 is fed into the fixed vise 14 waiting to be opened. However, as described above, the first side reference surface 20a and the first bottom reference surface 20b forming the L shape of the fixed vise 14, and the second side reference surface 28a and the second bottom reference surface 28b forming the L shape of the moving vice 16. Matches the alignment direction of the pass line PL. For this reason, the side portion and the bottom portion of the bar 12 fed into the fixed vise 14 inevitably rub against the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14, and the bar 12 This leads to scratches at the rubbing site.
[0008]
Further, in the step (c) of FIG. 11, there occurs a problem when the moving vice 16 moves backward. That is, the moving vice 16 opens the second movable jaw 30 when the moving vise 16 is retracted, but the second side reference surface 28a and the second bottom reference surface 28b of the second fixed jaw 28 in the moving vice 16 are still bars. The 12 sides and bottom remain in contact. Accordingly, when the moving vise 16 is retracted in the step (c), the second side reference surface 28a and the second bottom reference surface 28b are rubbed against the side portion and the bottom portion of the bar member 12, and also at this time, Causes a scratch at the rubbing site. When the bar 12 is scratched in this way, it affects the quality of the product after cutting, requires buffing or other post-processing to eliminate the scratch, or in some cases, it becomes a non-conforming jumping product. There are difficulties such as inviting the situation.
[0009]
As a measure for dealing with such difficulties, the invention “Cutting Machine” of Japanese Patent No. 2510834 has been proposed. This is because the feed vise is configured to be rotatable about a pivot parallel to the feed direction of the material to be cut, and this feed vise is composed of (1) its lower reference plane and lateral reference plane being the lower reference of the cutting vise. Neutral posture that is flush with the horizontal and horizontal reference planes, and (2) First displacement posture where both reference planes of the feed vise are separated from the reference plane of the cutting vise to the outside of the feed path, respectively. And (3) a feed material vise rotation driving means for rotating and disposing both reference surfaces of the feed material vise to a second displacement posture in which both reference surfaces of the cutting vise are separated from the inside of the feed material path, respectively. It is what. That is, if the present invention is applied to the step (a) in FIG. 11 of the present application described above, both the reference surfaces of the feeding vise are made of the cutting vise by setting the feeding vise to the first displacement posture (2). Since both reference surfaces are separated to the outside of the feed path, the material to be cut is prevented from rubbing against the cutting vise. Further, if applied to the step (c) of FIG. 11 of the present application, by setting the feeding vise to the second displacement posture of (3), both reference surfaces of the feeding vise are fed to both reference surfaces of the cutting vise. Since the material to be cut is separated to the inside of the material path, the material to be cut is prevented from rubbing with the feeding vise.
[0010]
By the way, in the invention according to the above-mentioned Japanese Patent No. 2510834, as shown in FIGS. 4, 6 and 8 of the patent publication, the feeding vise 4 is slidably supported by the guide shafts 22 and 23. The base 25 is composed of a fixed vise jaw 10 and a movable vise jaw 11 carried on the slide base 25. When the material feeding vise 4 is rotationally displaced from the neutral posture to the first displacement posture and from the neutral posture to the second displacement posture, the material feeding mechanism including the slide base 25, the fixed vise jaw 10 and the movable vise jaw 11 is used. It is a large-scale configuration that moves the entire body integrally.
[0011]
However, the slide base 25 itself has a considerable weight, so that the weight of the feeding mechanism as a whole is increased and the driving source for rotationally displacing the feeding vise 4 must have a large capacity. Will be required. Moreover, in order to allow the rotational displacement of the feeding material vise 4, a configuration in which the support frame 21 is rotated about the one guide shaft 22 that supports the slide base 25 as a pivot is required, and it is pointed out that the structure is extremely complicated. . Further, since the pivot portion needs to support a heavy feeding mechanism, it is required to use a rigid bearing, which is disadvantageous in terms of manufacturing cost.
[0012]
OBJECT OF THE INVENTION
The present invention has been proposed in order to suitably solve the above-described problems, and is required to displace the vice mechanism by making the portion of the vice mechanism in the moving vice displaceable with respect to the slide base. It is an object of the present invention to provide a displacement mechanism for a moving vise that can suppress an increase in the size of a drive mechanism and can also realize simplification of the mechanism and reduction in manufacturing cost.
[0013]
[Means for Solving the Problems]
  In order to overcome the above-mentioned problems and achieve the intended object, the present invention is fixedly provided on a pass line through which a long workpiece passes, and the workpiece has a first side reference plane and a first bottom reference plane. A fixed vise comprising a first fixed jaw that abuts and a first movable jaw that grips and releases the workpiece in proximity to and away from the first fixed jaw;
  A second fixed jaw that is positioned upstream of the fixed vice in the pass line and is movable forward and backward relative to the fixed vice, and a second side reference surface and a second bottom reference surface are in contact with the workpiece; A moving vise comprising a second movable jaw for gripping and releasing the workpiece in proximity to and away from the second fixed jaw;
  A workpiece machining means that is located downstream of the fixed vice in the pass line, moves forward and backward in a direction crossing the pass line, and processes the workpiece held by the fixed vice.The
  The mobile vice,
  A slide base that is slidably supported by a guide bar disposed in parallel with the pass line, and that can move forward and backward with respect to the fixed vice along the pass line;
  A second fixed jaw attached to the slide base so as to be displaceable and capable of contacting a second side reference surface and a second bottom reference surface with the workpiece;
  The second movable jaw disposed on the second fixed jaw and moving forward and backward with respect to the second side reference surface;
  It is interposed between the slide base and the second fixed jaw, and is urged when the moving vice advances, so that both second reference surfaces of the moving vise are outward with respect to the first reference surfaces of the fixed vice. First displacement means for displacing to
  It is interposed between the slide base and the second fixed jaw, and is energized when the moving vice is retracted, so that the second reference surfaces of the moving vise are inward with respect to the first reference surfaces of the fixed vice. And second displacement means for displacingIn workpiece processing equipment,
  One side portion of the second fixed jaw is attached to one side portion of the slide base via a leaf spring extending in parallel with a pass line so as to be swingable and displaceable.
  The first displacement means and the second displacement means are provided on the other side of the slide base or the second fixed jaw,
  The first displacing means includes a mover that extends at the time of urging and presses the second fixed jaw or the slide base to displace the second reference surface outward.
  The second displacement means extends in the opposite direction to the mover of the first displacement means when biased, and presses the second fixed jaw or the slide base to displace the second reference surface inward. WithIt is characterized by that.
  In order to overcome the above-mentioned problems and achieve the intended object, another invention of the present application is fixedly provided on a pass line through which a long workpiece passes, and the workpiece has a first side reference surface and a first bottom portion. A fixed vise comprising a first fixed jaw with which a reference surface abuts and a first movable jaw that grips and releases the workpiece in proximity to and away from the first fixed jaw;
  A second fixed jaw that is positioned upstream of the fixed vice in the pass line and is movable forward and backward relative to the fixed vice, and a second side reference surface and a second bottom reference surface are in contact with the workpiece; A moving vise comprising a second movable jaw for gripping and releasing the workpiece in proximity to and away from the second fixed jaw;
  It is located on the downstream side of the fixed vice in the pass line, and moves forward and backward in a direction crossing the pass line, and comprises a workpiece processing means for processing the workpiece gripped by the fixed vice,
  The mobile vice,
  A slide base that is slidably supported by a guide bar disposed in parallel with the pass line, and that can move forward and backward with respect to the fixed vice along the pass line;
  A second fixed jaw attached to the slide base so as to be displaceable and capable of contacting a second side reference surface and a second bottom reference surface with the workpiece;
  The second movable jaw disposed on the second fixed jaw and moving forward and backward with respect to the second side reference surface;
  It is interposed between the slide base and the second fixed jaw, and is urged when the moving vice advances, so that both second reference surfaces of the moving vise are outward with respect to the first reference surfaces of the fixed vice. First displacement means for displacing to
  It is interposed between the slide base and the second fixed jaw, and is energized when the moving vice is retracted, so that the second reference surfaces of the moving vise are inward with respect to the first reference surfaces of the fixed vice. In the workpiece machining apparatus constituted by the second displacement means to be displaced to
  The second fixed jaw is attached to the slide base via a parallel link mechanism so as to be movable up and down.
  The first displacement means and the second displacement means are provided on the slide base or the second fixed jaw,
  The first displacing means includes a mover that extends at the time of urging and presses the second fixed jaw or the slide base to displace the second reference surface outward.
  The second displacement means extends in the opposite direction to the mover of the first displacement means when biased, and presses the second fixed jaw or the slide base to displace the second reference surface inward. It is characterized by providing.
  In order to overcome the above-mentioned problems and achieve the intended object, still another invention of the present application is fixedly provided on a pass line through which a long work passes, and the work is provided with a first side reference surface and a first side. A fixed vise comprising a first fixed jaw with which a bottom reference surface abuts, and a first movable jaw that grips and releases the workpiece in proximity to and away from the first fixed jaw;
  A second fixed jaw that is positioned upstream of the fixed vice in the pass line and is movable forward and backward relative to the fixed vice, and a second side reference surface and a second bottom reference surface are in contact with the workpiece; A moving vise comprising a second movable jaw for gripping and releasing the workpiece in proximity to and away from the second fixed jaw;
  It is located on the downstream side of the fixed vice in the pass line, and moves forward and backward in a direction crossing the pass line, and comprises a workpiece processing means for processing the workpiece gripped by the fixed vice,
  The mobile vice,
  A slide base that is slidably supported by a guide bar disposed in parallel with the pass line, and that can move forward and backward with respect to the fixed vice along the pass line;
  A second fixed jaw attached to the slide base so as to be displaceable and capable of contacting a second side reference surface and a second bottom reference surface with the workpiece;
  The second movable jaw disposed on the second fixed jaw and moving forward and backward with respect to the second side reference surface;
  It is interposed between the slide base and the second fixed jaw, and is urged when the moving vice advances, so that both second reference surfaces of the moving vise are outward with respect to the first reference surfaces of the fixed vice. First displacement means for displacing to
  It is interposed between the slide base and the second fixed jaw, and is energized when the moving vice is retracted, so that the second reference surfaces of the moving vise are inward with respect to the first reference surfaces of the fixed vice. In the workpiece machining apparatus constituted by the second displacement means to be displaced to
  The second fixed jaw is attached to the slide base so as to be movable up and down through a guide surface inclined in a direction parallel to the pass line and away from the pass line,
  The first displacing means includes a mover that slides the second fixed jaw to one side along the guide surface during urging to displace the second reference surface outwardly,
  The second displacing means includes a mover that slides the second fixed jaw to the other side along the guide surface during urging to displace the second reference surface inward.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, a displacement mechanism for a moving vise according to the present invention will be described below with reference to the accompanying drawings by way of a preferred embodiment. 10 and 11 that are the same as or similar to the members already described are denoted by the same reference numerals and description thereof is omitted.
[0015]
[First embodiment]
1 is a front view showing a displacement mechanism of a moving vice according to a first embodiment of the present invention, FIG. 2 is a left side view of the displacement mechanism shown in FIG. 1, and FIG. 3 is a right side view of the displacement mechanism shown in FIG. 4 is a plan view of the displacement mechanism shown in FIG. The moving vise 16 shown in the drawing is a slide base 36 that can move forward and backward with respect to the fixed vice 14 (described above with reference to FIG. 10) along the path line PL, and a second fixed that is movably attached to the slide base 36. A jaw 28, a second movable jaw 30 disposed on the second fixed jaw 28 to grip and release the workpiece 12, and biased at a required timing to move both reference surfaces of the moving vise 16 to the fixed vise 14. First displacement means 38 for displacing outward with respect to both reference surfaces, and second displacement for urging the reference surfaces of the moving vice 16 inward with respect to both reference surfaces of the fixed vice 14 when urged at a required timing. It is basically composed of means 40.
[0016]
That is, the slide base 36 is slidably supported by two guide bars 42 and 42 which are arranged in parallel to the pass line PL and extend in parallel to the lower middle of both guide bars 42 and 42. It is screwed into the extending ball screw 44. The ball screw 44 can be rotated forward and backward by a drive source (not shown) so that the slide base 36 can be moved forward and close to the fixed vice 14 and moved backward from the fixed vice 14.
[0017]
A second fixed jaw 28 having the same basic configuration as described with reference to FIG. 10 is attached to the slide base 36 so as to be swingable and displaceable with respect to the slide base 36. That is, the second fixed jaw 28 has a second side reference surface 28a that can contact the side of the bar 12 and a second bottom reference surface 28b that can contact the bottom of the bar 12 on the upper surface. ing. As shown in FIG. 1, vertical walls 46, 48 depending on the left and right are provided on the lower surface of the second fixed jaw 28, and when the second fixed jaw 28 is crotch on the slide base 36. The one vertical wall 46 is located on the left side surface 36b of the base 36 with a slight gap, and the other vertical wall 48 is located on the right side surface 36a of the base 36 with a slight gap. It has become.
[0018]
As shown in FIGS. 1 and 3, the right vertical wall 48 of the second fixed jaw 28 and the right side surface 36a of the slide base 36 are connected by a leaf spring 50 having a required thickness interposed therebetween. Yes. A plurality of leaf springs 50 (two in the illustrated example) are used at a required interval in the longitudinal direction, and the right vertical wall 48 of the second fixed jaw 28 and the right side surface 36a of the slide base 36 are connected via a plurality of bolts 52. It is installed in. Accordingly, the second fixed jaw 28 urges the first displacement means 38 and the second displacement means 40, which will be described later, to swing in the clockwise direction as shown in FIG. 8, or counterclockwise as shown in FIG. Swinging displacement can be achieved.
[0019]
The second fixed jaw 28 is moved forward and backward with respect to the second side reference surface 28a to hold and release the bar 12 with respect to the second side reference surface 28a. 30 is disposed. That is, as shown in FIGS. 1 and 4, a double-acting hydraulic cylinder 54 is disposed horizontally on the right side of the upper surface of the second fixed jaw 28, and the piston 56 extends in a direction perpendicular to the pass line PL. I am letting. The second movable jaw 30 is attached to the tip of the piston 56, and the cylinder 54 can be moved forward and backward with respect to the second side reference surface 28a by urging the cylinder 54 forward and backward. Is. In FIG. 4, reference numeral 58 denotes a guide bar that guides the second movable jaw 30 horizontally.
[0020]
As shown in FIG. 2, a rectangular opening 60 is formed in the vertical wall 46 of the second fixed jaw 28, and a projecting piece 62 protruding horizontally from the left side surface 36 b of the slide base 36 is formed in the opening 60. It faces. In FIG. 2, a first hydraulic cylinder (first displacement means) 38 is arranged upright on the upper left surface of the projecting piece 62, and the top end of the piston 64 extending above the upper end edge of the opening 60. Oriented. That is, the first hydraulic cylinder 38 is interposed between the slide base 36 (the projecting piece 62) and the second fixed jaw 28 (the opening 60), and is urged when the moving vice 16 advances as will be described later. The piston 64 is extended upward. Accordingly, as shown in FIG. 8 which is a cross-sectional view taken along the line AA of FIG. As a result, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced outward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. It leads to.
[0021]
Similarly, in FIG. 2, a second hydraulic cylinder (second displacing means) 40 is arranged upside down on the lower right side of the projecting piece 62, and the tip of the piston 66 extending downward is arranged at the lower edge of the opening 60. Oriented. That is, the second hydraulic cylinder 40 is interposed between the slide base 36 (the projecting piece 62) and the second fixed jaw 28 (the opening 60), and is urged when the moving vice 16 is retracted as will be described later. The piston 66 is extended downward. As a result, as shown in FIG. 9, which is a cross-sectional view taken along line BB in FIG. 2, the second fixed jaw 28 is oscillated and displaced counterclockwise with respect to the slide base 36. As a result, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced inward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. It leads to.
[0022]
In the illustrated example, the first hydraulic cylinder 38 as the first displacing means and the second hydraulic cylinder 40 as the second displacing means are structured to be attached to the slide base 36 (projection piece 62). The cylinders 38 and 40 may be attached to the second fixed jaw 28 (the opening 60 thereof). The first displacing means 38 and the second displacing means 40 may be any linear actuators, for example, the second fixed jaw 28 or the slide base 36 by pistons 64 and 66 (movable elements) of a fluid pressure cylinder. It is set as the structure which presses. Further, the first displacing means 38 and the second displacing means 40 do not need to have separate structures as in the illustrated example. For example, a double-acting type in which a movable element is extended in the left and right axial directions of the actuator body. The linear actuator may be adopted.
[0023]
As shown in FIGS. 2 and 4, in the vicinity of the right and left ends of the projecting piece 62 in the slide base 36, there are elastic restricting members 68, 68 that hold the second fixed jaw 28 in a neutral position with respect to the slide base 36. Each is provided. That is, the bolt 70 is vertically inserted in the vicinity of the left end of the projecting piece 62, and the upper and lower portions can be locked by the nuts 72, 72 so that the height can be adjusted. An elastic buffer piece 74 made of, for example, rubber is attached to the upper open end of the bolt 70, and the elastic buffer piece 74 abuts on the upper edge of the opening 60 in the second fixed jaw 28, so that the second fixed The jaw 28 is held in a neutral position with respect to the slide base 36. At this time, the position of the bolt 70 is adjusted so as to maintain a small gap between the head 70a and the lower end edge of the opening 60, and then the bolts 70 are locked by the nuts 72 and 72. Then, as will be described later with reference to FIG. 8, the head 70a abuts against the lower edge of the opening 60 at the top dead center obtained by swinging and displacing the second fixed jaw 28 in the clockwise direction with respect to the slide base 36. It functions as a stopper that prevents further displacement of the two fixed jaws 28.
[0024]
Similarly, a bolt 70 is vertically inserted in the vicinity of the right end of the protruding piece 62, and is vertically locked by nuts 72, 72 so that the height can be adjusted. An elastic buffer piece 74 made of rubber is attached to the lower open end of the bolt 70, and the elastic buffer piece 74 abuts against the lower end edge of the opening 60 in the second fixed jaw 28 as shown in FIG. The second fixed jaw 28 is held in a neutral position with respect to the slide base 36. A small gap is held between the head 70a of the bolt 70 and the upper edge of the opening 60, and the nuts 72 and 72 are locked. The head 70a abuts on the upper edge of the opening 60 at the bottom dead center obtained by swinging and displacing the second fixed jaw 28 counterclockwise with respect to the slide base 36, as will be described later with reference to FIG. It functions as a stopper that prevents further displacement of the second fixed jaw 28. The material constituting the two elastic restricting members 68, 68 is not limited to a rubber material, and may be a coil spring, a leaf spring piece, or the like.
[0025]
[Operation of the first embodiment]
Next, the operation of the displacement mechanism according to the first embodiment will be described. In the moving vise 16 shown in FIGS. 1 and 2, the first hydraulic cylinder 38 and the second hydraulic cylinder 40 are in a deenergized state, and the elastic buffer pieces 74 (74) of the elastic regulating members 68 (68) are corresponding. In contact with the upper end edge (lower end edge) of the opening 60, the second fixed jaw 28 is held in a neutral position with respect to the slide base 36. Further, it is assumed that the moving vise 16 is in the retracted position shown in the step (d) of FIG. In this state, when the cylinder 54 mounted on the moving vise 16 is positively biased, the second movable jaw 30 extends, and the bar 12 extending along the pass line PL is replaced with the second fixed jaw 28. It comes to grip between the two side reference surfaces 28a.
[0026]
Next, by rotating the ball screw 44 forward, the moving vise 16 starts moving forward together with the slide base 36 toward the fixed vice 14 as shown in step (a) of FIG. If the first hydraulic cylinder 38 is urged at the same timing when the moving vise 16 moves forward, as shown in FIG. 8, the piston 64 extends upward to move the second fixed jaw 28 against the slide base 36. Swing and displace clockwise. For this reason, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are shown in FIG. 8 with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. The neutral position indicated by the two-dot chain line is displaced outward (this is referred to as the first displacement position).
[0027]
That is, the bar 12 gripped by the moving vise 16 is a result of the outward displacement of the second side reference surface 28a and the second bottom reference surface 28b of the second fixed jaw 28 with which the side and bottom are in contact. It also displaces outward and is slightly separated from the first side reference surface 20a and the first bottom reference surface 20b of the first fixed jaw 20 in the fixed vise 14. Therefore, even when the bar 12 is supplied to the fixed vice 14 by the advancement of the moving vise 16, the bar 12 does not slide against the fixed vice 14 and the bar surface does not rub. When the second fixed jaw 28 reaches a predetermined first displacement position, the head portion 70a of the bolt 70 contacts the lower end edge of the opening 60, thereby preventing further displacement of the second fixed jaw 28. Is done.
[0028]
Thus, after the bar 12 is fed into the fixed vise 14 without sliding on the first side reference surface 20a and the first bottom reference surface 20b of the first fixed jaw 20, the first hydraulic cylinder 38 is attached. By releasing the force, the second fixed jaw 28 is returned to the neutral position, and the first movable jaw 22 grips the bar 12 as shown in step (b) of FIG. Then, as shown in step (c) of FIG. 11, the circular saw 18 moves forward to cut the bar 12 held by the fixed vise 14. Further, the moving vise 16 reversely biases the cylinder 54 mounted on the moving vise 16 and retracts the second movable jaw 30 to release the grip of the bar 12 and starts to retract to a required retracted position. . When the second hydraulic cylinder 40 is energized in synchronization with the reversal of the moving vice 16, the piston 66 extends downward as shown in FIG. 9, and the second fixed jaw 28 is counterclockwise with respect to the slide base 36. Swing and displace in the direction. For this reason, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are two points in FIG. 9 with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. Displacement from the neutral position indicated by the chain line to the inside (this is called the second displacement position).
[0029]
That is, the bar 12 released from being held by the moving vice 16 is brought into contact with the first side reference surface 20a and the first bottom reference surface 20b of the fixed vice 14 whose side and bottom are located downstream. Yes. However, since the second side reference surface 28a and the second bottom reference surface 28b of the moving vice 16 are displaced inward, the second side reference surface 28a and the second bottom reference surface when the moving vice 16 is retracted. The surface 28b is slightly separated from the side and bottom of the bar 12. Therefore, when the moving vice 16 is retracted, the bar 12 does not rub against the fixed vice 14, so that the bar surface is not scratched. When the second fixed jaw 28 reaches a predetermined second displacement position, the head portion 70a of the bolt 70 contacts the upper edge of the opening 60, thereby preventing further displacement of the second fixed jaw 28. Is done. Then, in the step (d) of FIG. 11 when the reversing of the moving vise 16 is finished, the second fixed jaw 28 is returned to the neutral position again by releasing the urging force of the second hydraulic cylinder 40, whereby the initial state is established. One cycle is complete.
[0030]
[Reference example]
  FIG. 5 shows the present invention.Reference exampleIt is a front view which shows the displacement mechanism of the movement vice which concerns on. thisReference exampleThen, the second fixed jaw 28 in the moving vise 16 is attached to the central portion of the slide base 36 via a hinge pin 76 so as to be swingable and displaceable. That is, a mountain-shaped bulge portion 78 is integrally formed at the center of the horizontal top surface of the slide base 36, and a through hole extending in parallel with the pass line PL is formed in the bulge portion 78. . The second fixed jaw 28 is mounted on the slide base 36 so as to be crotch, and has a through hole formed in a vertical plate 80 (80) that hangs forward and backward in the axial direction of the second fixed jaw 28. After the alignment with the through-holes, the hinge pin 76 is inserted into these through-holes in common, so that the fixed jaw 28 is supported at the center portion of the slide base 36 so as to be able to swing and displace.
[0031]
Further, on the left and right flat top surfaces of the slide base 36, a first hydraulic cylinder 38 and a second hydraulic cylinder 40 having the same configuration as described in FIG. 2 are arranged upright, and pistons 64, 66 extending upward are provided. Is directed to the horizontal back surface of the second fixed jaw 28. The second fixed jaw 28 is always present at the neutral position shown in FIG. 5B (B) under the action of an elastic regulating member (not shown). When the first hydraulic cylinder 38 is energized at the same time as the moving vise 16 moves forward, the piston 64 extends upward and pushes the second fixed jaw 28 upward. That is, as shown in FIG. 5 (2) (A), the second fixed jaw 28 is oscillated and displaced clockwise with respect to the slide base 36 around the hinge pin 76. As a result, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced outward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. It reaches.
[0032]
When the moving vise 16 is moved backward, the second hydraulic cylinder 40 is energized in synchronism with this, and the piston 66 extends upward to push the second fixed jaw 28 upward. That is, as shown in FIG. 5C, the second fixed jaw 28 is oscillated and displaced counterclockwise with respect to the slide base 36 with the hinge pin 76 as the center. Accordingly, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced inward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. .
[0033]
[No.2Example】
  FIG. 6 shows the present invention.2It is a front view which shows the displacement mechanism of the moving vice which concerns on an Example. In this embodiment, the second fixed jaw 28 is attached to the slide base 36 through a parallel link mechanism 82 so as to be movable up and down. That is, the flat top surface of the slide base 36 and the flat back surface of the second fixed jaw 28 are connected by the link members 84 and 84 that form a pair inclined in parallel. The basic structure and arrangement position of the first and second hydraulic cylinders 38, 40 and the basic structure and arrangement position of the elastic regulating members 68, 68 are exactly the same as those in the first embodiment described with reference to FIG. is there.
[0034]
  This first2In the embodiment, the second fixed jaw 28 is always in the neutral position shown in FIG. 6B (B). When the first hydraulic cylinder 38 is energized at the same time as the moving vise 16 moves forward, the piston 64 extends upward and pushes the second fixed jaw 28 upward. That is, as shown in FIG. 6 (2) (A), the second fixed jaw 28 is displaced upward with respect to the slide base 36 as indicated by a solid line. As a result, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced outward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. It reaches.
[0035]
  Further, when the moving vise 16 is moved backward, if the second hydraulic cylinder 40 is energized in synchronization with this, the piston 66 is moved.underExtending toward the second fixing jaw 28Push down. That is, as shown in FIG. 6C, the second fixed jaw 28 is displaced downward with respect to the slide base 36 as indicated by a solid line. Accordingly, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced inward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14. .
[0036]
[No.3Example】
  FIG. 7 shows the first aspect of the present invention.3It is a front view which shows the displacement mechanism of the moving vice which concerns on an Example. In this embodiment, the second fixed jaw 28 is attached to the slide base 36 so as to be movable up and down via a guide surface 86 that is parallel to the pass line PL and inclined in a direction away from the pass line PL. That is, the top surface of the slide base 36 is formed as a guide surface 86 that is parallel to the pass line PL and inclined in a direction away from the pass line PL. Similarly, the back surface of the second fixed jaw 28 is also formed as a guide surface 88 that is parallel to the pass line PL and inclined in a direction away from the pass line PL. The second fixed jaw 28 is attached such that its guide surface 88 is slidably brought into contact with the guide surface 86 of the slide base 36.
[0037]
As shown in FIG. 7 (1), a concave portion 92 having a required width is provided above the guide surface 86 of the slide base 36, and the first hydraulic cylinder 38 is fixed to the concave portion 92 with the cylinder body back to back. The second hydraulic cylinder 40 faces to align the axes of the pistons 64 and 66 built in the cylinders so as to freely advance and retract. The piston 64 of the first hydraulic cylinder 38 is directed obliquely upward, and the open end of the piston 64 is fixed to a bracket 90 that hangs down from the guide surface 88 of the second fixed jaw 28. The piston 66 of the second hydraulic cylinder 40 is directed obliquely downward, and the open end of the piston 66 is fixed to the wall surface of the recess 92. That is, the two first hydraulic cylinders 38 and the second hydraulic cylinder 40 are attached to both cylinders by fixing the pistons 64 and 66 to the bracket 90 and the slide base 36, respectively.
[0038]
  This first3In the embodiment, the second fixed jaw 28 is always in the neutral position shown in FIG. 7B (B) under the action of an elastic regulating member (not shown). Further, as shown in FIG. 7 (1), the piston 64 of the first hydraulic cylinder 38 is reversely biased and is in the retracted position, and the piston 66 of the second hydraulic cylinder 40 is positively biased and is in the forward position. When the first hydraulic cylinder 38 is positively biased at the same time as the moving vise 16 moves forward, the piston 64 extends obliquely upward. At this time, by maintaining the positive biasing state of the second hydraulic cylinder 40, the piston 66 continues to stop at the forward movement position. Therefore, the piston 64 of the first hydraulic cylinder 38 slides the second fixed jaw 28 obliquely upward via the bracket 90. That is, as shown in FIG. 7 (2) (A), the second fixed jaw 28 is displaced upward with respect to the slide base 36 as indicated by a solid line. Accordingly, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced outward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14, and One displacement position is reached. At the end of the forward movement of the moving vise 16, the piston 64 of the first hydraulic cylinder 38 is reversely biased, whereby the second fixed jaw 28 returns to the neutral position.
[0039]
When the moving vise 16 is moved backward from the neutral position described above, the piston 66 is fixed to the slide base 36 as described above when the second hydraulic cylinder 40 is reversely biased in synchronization with this timing. A force that pulls the cylinder 40 diagonally to the lower left acts. At this time, the first hydraulic cylinder 38 continues to hold the reverse bias so that the piston 64 remains in the retracted position. Therefore, the above-described force for pulling the second hydraulic cylinder 40 obliquely to the lower left is transmitted to the bracket 90 via the second hydraulic cylinder 40 and the piston 64 as they are. For this reason, the second fixed jaw 28 is slid obliquely downward through the bracket 90. That is, as shown in FIG. 7 (2) (C), the second fixed jaw 28 is displaced downward with respect to the slide base 36 as indicated by a solid line. Accordingly, the second side reference surface 28a and the second bottom reference surface 28b of the moving vise 16 are displaced inward with respect to the first side reference surface 20a and the first bottom reference surface 20b of the fixed vise 14, and The second displacement position is reached. At the end of the reversal of the moving vice 16, the piston 66 of the second hydraulic cylinder 40 is positively biased, whereby the second fixed jaw 28 returns to the neutral position.
[0040]
【The invention's effect】
As described above, according to the displacement mechanism of the moving vice according to the present invention, since only the portion of the vice mechanism in the moving vise is configured to be displaceable with respect to the slide base, the neutral position is shifted to the first displacement position. In addition, only the portion of the vice mechanism needs to be driven in order to displace from the neutral position to the second displacement position. Accordingly, it is possible to suppress an increase in the size of the drive mechanism, and to realize simplification of the mechanism and reduction in manufacturing cost.
[Brief description of the drawings]
FIG. 1 is a front view showing a displacement mechanism of a moving vice according to a first embodiment of the present invention.
FIG. 2 is a left side view of the displacement mechanism shown in FIG.
FIG. 3 is a right side view of the displacement mechanism shown in FIG.
4 is a plan view of the displacement mechanism shown in FIG. 1. FIG.
FIG. 5 of the present inventionReference exampleIt is a front view which shows the displacement mechanism of the movement vice which concerns on.
FIG. 6 shows the first aspect of the present invention.2It is a front view which shows the displacement mechanism of the moving vice which concerns on an Example.
FIG. 7 shows the first aspect of the present invention.3It is a front view which shows the displacement mechanism of the moving vice which concerns on an Example.
FIG. 8 is a cross-sectional view taken along line AA of FIG. 2 and shows a state where the second fixed jaw is oscillated and displaced clockwise with respect to the slide base by urging the first displacing means.
9 is a cross-sectional view taken along line BB of FIG. 2 and shows a state in which the second fixed jaw is oscillated and displaced counterclockwise with respect to the slide base by urging the second displacement means. .
FIG. 10 is a schematic perspective view showing an example of a workpiece processing apparatus used to sequentially process a long workpiece.
FIGS. 11A to 11D are explanatory diagrams showing step by step the behaviors of a fixed vice and a moving vice in a bar cutting device.
[Explanation of symbols]
  12 Workpiece (bar material)
  14 Fixed vise
  16 Mobile vice
  18 Workpiece processing means (circular saw)
  20 First fixed jaw
  20a First side reference plane
  20b First bottom reference plane
  22 First movable jaw
  28 Second fixed jaw
  28a Second side reference plane
  28b Second bottom reference plane
  30 Second movable jaw
  36 slide base
  36a Right side (one side)
  38 First displacement means (cylinder)
  40 Second displacement means (cylinder)
  42 Guide bar
  48 Vertical wall (one side)
  50 leaf spring
  60 opening (the other side)
  62 Protruding piece (the other side)
  64,66 Movable element (piston)
  68 Elastic restriction member
  76 Hinge Pin
  82 Parallel link mechanism
  86 Guide surface
  PL pass line

Claims (4)

A first side reference surface (20a) and a first bottom reference surface (20b) are in contact with the work (12), and are fixedly provided on a pass line (PL) through which the long work (12) passes. A fixed vise (14) comprising a first fixed jaw (20) and a first movable jaw (22) for gripping and releasing the workpiece (12) close to and away from the first fixed jaw (20);
Located on the upstream side of the fixed vice (14) in the pass line (PL) and can be moved forward and backward with respect to the fixed vice (14), and the workpiece (12) has a second side reference surface (28a). And a second fixed jaw (28) with which the second bottom reference surface (28b) abuts and a second movable jaw for gripping and releasing the workpiece (12) close to and away from the second fixed jaw (28) A mobile vice (16) comprising (30), and
Positioned downstream of the fixed vise (14) in the pass line (PL), moving forward and backward in a direction crossing the pass line (PL), the workpiece (14) gripped by the fixed vise (14) ( Ri Do from the workpiece machining means for machining 12) (18),
The mobile vice (16),
A slide base (slidably supported by a guide bar (42) disposed in parallel with the pass line (PL) and capable of moving forward and backward with respect to the fixed vice (14) along the pass line (PL) ( 36) and
A second fixed jaw (28) attached to the slide base (36) so as to be displaceable, and capable of abutting a second side reference surface (28a) and a second bottom reference surface (28b) on the work (12);
The second movable jaw (30) disposed on the second fixed jaw (28) and moving forward and backward with respect to the second side reference surface (28a);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) advances, so that both second reference surfaces (28a, 28a, First displacement means (38) for displacing 28b) outward relative to both first reference surfaces (20a, 20b) of the fixed vise (14);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) is retracted, so that both the second reference surfaces (28a, 28a, 28b) a work machining apparatus comprising second displacement means (40) for displacing the fixed vise (14) inward relative to both first reference surfaces (20a, 20b) ;
One side (48) of the second fixed jaw (28) is connected to one side (36a) of the slide base (36) via a leaf spring (50) extending in parallel with the pass line (PL). ) Is swingably displaceable,
The first displacement means (38) and the second displacement means (40) are provided on the other side (62, 60) of the slide base (36) or the second fixed jaw (28),
The first displacement means (38) is movable so as to extend when energized and press the second fixed jaw (28) or the slide base (36) to displace the second reference surfaces (28a, 28b) outward. With children (64)
The second displacement means (40) extends in a direction opposite to the mover (64) of the first displacement means (38) when energized, and the second fixed jaw (28) or the slide base (36) is extended. A moving vise displacement mechanism comprising a mover (66) that presses and displaces the second reference plane (28a, 28b) inward . A first side reference surface (20a) and a first bottom reference surface (20b) are in contact with the work (12), and are fixedly provided on a pass line (PL) through which the long work (12) passes. A fixed vise (14) comprising a first fixed jaw (20) and a first movable jaw (22) for gripping and releasing the workpiece (12) close to and away from the first fixed jaw (20);
Located on the upstream side of the fixed vice (14) in the pass line (PL) and can be moved forward and backward with respect to the fixed vice (14), and the workpiece (12) has a second side reference surface (28a). And a second fixed jaw (28) with which the second bottom reference surface (28b) abuts and a second movable jaw for gripping and releasing the workpiece (12) close to and away from the second fixed jaw (28) A mobile vice (16) comprising (30), and
Positioned downstream of the fixed vise (14) in the pass line (PL), moving forward and backward in a direction crossing the pass line (PL), the workpiece (14) gripped by the fixed vise (14) ( 12) Workpiece processing means (18) for processing,
The mobile vice (16),
A slide base (slidably supported by a guide bar (42) disposed in parallel with the pass line (PL) and capable of moving forward and backward with respect to the fixed vice (14) along the pass line (PL) ( 36) and
A second fixed jaw (28) attached to the slide base (36) so as to be displaceable, and capable of abutting a second side reference surface (28a) and a second bottom reference surface (28b) on the work (12);
The second movable jaw (30) disposed on the second fixed jaw (28) and moving forward and backward with respect to the second side reference surface (28a);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) advances, so that both second reference surfaces (28a, 28a, First displacement means (38) for displacing 28b) outward relative to both first reference surfaces (20a, 20b) of the fixed vise (14);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) is retracted, so that both the second reference surfaces (28a, 28a, 28b) a work machining apparatus comprising second displacement means (40) for displacing the fixed vise (14) inward relative to both first reference surfaces (20a, 20b);
The second fixed jaw (28) is attached to the slide base (36) via a parallel link mechanism (82) so as to be movable up and down.
The first displacement means (38) and the second displacement means (40) are provided on the slide base (36) or the second fixed jaw (28),
The first displacement means (38) is movable so as to extend when energized and press the second fixed jaw (28) or the slide base (36) to displace the second reference surfaces (28a, 28b) outward. With children (64)
The second displacement means (40) extends in a direction opposite to the mover (64) of the first displacement means (38) when energized, and the second fixed jaw (28) or the slide base (36) is extended. A mover (66) for pressing and displacing the second reference plane (28a, 28b) inward is provided.
A displacement mechanism of a moving vise characterized by that . A first side reference surface (20a) and a first bottom reference surface (20b) are in contact with the work (12), and are fixedly provided on a pass line (PL) through which the long work (12) passes. A fixed vise (14) comprising a first fixed jaw (20) and a first movable jaw (22) for gripping and releasing the workpiece (12) close to and away from the first fixed jaw (20);
Located on the upstream side of the fixed vice (14) in the pass line (PL) and can be moved forward and backward with respect to the fixed vice (14), and the workpiece (12) has a second side reference surface (28a). And a second fixed jaw (28) with which the second bottom reference surface (28b) abuts and a second movable jaw for gripping and releasing the workpiece (12) close to and away from the second fixed jaw (28) A mobile vice (16) comprising (30), and
Positioned downstream of the fixed vise (14) in the pass line (PL), moving forward and backward in a direction crossing the pass line (PL), the workpiece (14) gripped by the fixed vise (14) ( 12) Workpiece processing means (18) for processing,
The mobile vice (16),
A slide base (slidably supported by a guide bar (42) disposed in parallel with the pass line (PL) and capable of moving forward and backward with respect to the fixed vice (14) along the pass line (PL) ( 36) and
A second fixed jaw (28) attached to the slide base (36) so as to be displaceable, and capable of abutting a second side reference surface (28a) and a second bottom reference surface (28b) on the work (12);
The second movable jaw (30) disposed on the second fixed jaw (28) and moving forward and backward with respect to the second side reference surface (28a);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) advances, so that both second reference surfaces (28a, 28a, First displacement means (38) for displacing 28b) outward relative to both first reference surfaces (20a, 20b) of the fixed vise (14);
It is interposed between the slide base (36) and the second fixed jaw (28), and is urged when the moving vice (16) is retracted, so that both the second reference surfaces (28a, 28a, 28b) a work machining apparatus comprising second displacement means (40) for displacing the fixed vise (14) inward relative to both first reference surfaces (20a, 20b);
The second fixed jaw (28) can be moved up and down to the slide base (36) via a guide surface (86) that is parallel to the pass line (PL) and inclined in a direction away from the pass line (PL). Mounted on and
The first displacing means (38) slides the second fixed jaw (28) to one side along the guide surface (86) during urging to move the second reference surfaces (28a, 28b) outward. It has a mover (64) to displace,
The second displacing means (40) slides the second fixed jaw (28) to the other side along the guide surface (86) when energized to inwardly move the second reference surfaces (28a, 28b). With mover (66) to be displaced
A displacement mechanism of a moving vise characterized by that . An elastic regulating member (68) is provided between the slide base (36) and the second fixed jaw (28), and always holds the second fixed jaw (28) in a neutral position. The displacement mechanism of the moving vice as described in any one of 1-3 .

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