JP5865022B2 - Chip separator - Google Patents

Description

  In the present invention, for example, a punch press such as a turret punch press or a punch / laser composite processing machine in which a punch press and a laser processing machine are combined is used to perform a tapping process after piercing a plate-shaped workpiece. The present invention relates to a chip separation device that separates and removes the above-mentioned chips from an air flow containing chips, and more specifically, the centrifugal force generated by the swirling of the air flow and the gravity acting on the chips. TECHNICAL FIELD The present invention relates to a chip separating apparatus that can separate chips.

  In a punch press, in order to prevent the punched piece (scrap) from being lifted up to the upper surface of the plate-like workpiece, the scrap is removed by sucking the inside of the die hole with a negative pressure generator. (For example, refer to Patent Document 1).

JP 2007-38230 A

  By the way, in a punch press such as a turret punch press, for example, a tapping device may be attached to the turret to perform a tapping process on a plate-shaped workpiece. And if a point tap is used as a tap, the thread-like chip at the time of a tapping process will arise in the downward direction. Therefore, it is possible to suck and remove scrap generated during punching and to remove chips generated during tapping.

  The scrap generated during punching is a small lump that is easy to separate from the air flow when sucked, but the chips generated during tapping are formed in a thin spiral and easily move on the air flow. . Therefore, the chips generated by the tapping process tend to cause clogging of the filter in the negative pressure generator. Therefore, at the time of tapping, the present situation is that the chips generated by tapping are not removed by suction.

  Therefore, the present invention intends to provide a chip separation device capable of effectively separating chips from an air flow when sucked and removed from the processing position of chips generated by tapping. It is.

The present invention has been made in view of the conventional problems as described above, and is a chip separating device for separating chips contained in an air flow, and is provided above an upper portion of a lower box for storing chips. A box is detachably provided, an airflow inlet containing chips is provided on one side of the upper box, and an airflow outlet is provided on the other side of the upper box, which is lower than the outlet. the position, e Bei expansion chamber having an open bottom, and said expansion chamber having a lower side of the outlet of the inlet and the other side portion of the one side, than the cross-sectional area of the expansion chamber provided in connection with small pipe cross-sectional area, between the one side and the expansion chamber of said upper box, provided with a raised passage air flow toward the outlet, the opening of the expansion chamber, wherein the rising a direction opposite and obliquely downward in the inflow direction of air into the expansion chamber And it is characterized in that it comprises a guide plate for guiding the air flow to the roadside direction.

  In the chip separation device, the air flow dividing means for dividing the air flow flowing into the expansion chamber into a plurality of air flows is provided on a facing surface facing the inlet in the expansion chamber. It is what.

  Further, the chip separating device is characterized in that a rising inhibition plate that inhibits an increase in the airflow guided obliquely downward by the guide plate is provided at a position facing the guide plate. is there.

  According to the present invention, when the air flow containing chips flows into the expansion chamber from the inflow port, the air velocity becomes low in the expansion chamber and is guided downward in a slanting direction, and then swirls to turn up the ascending passage. It rises and flows out from the outlet. Therefore, when turning up into the ascending passage, the centrifugal force and the weight act downward on the chips contained in the air flow, and the chips can be effectively separated from the air flow. is there.

It is a perspective explanatory view of the chip separation device concerning the embodiment of the present invention. It is an isometric view explanatory drawing which shows the internal structure of the said chip separation apparatus. It is an isometric view explanatory drawing which shows the internal structure of the said chip separation apparatus. It is a plane explanatory view of the above-mentioned chip separation device. It is explanatory drawing explaining the flow of the air inside the said chip separation apparatus.

  Referring to FIG. 1, a chip separating apparatus 1 according to an embodiment of the present invention includes a quadrangular base frame 3, and a lower portion is provided on the base frame 3 via a plurality of latching means 5. The box 7 is detachably mounted and fixed. An upper box 9 is detachably fitted on the lower box 7. That is, the upper box 9 is detachably fitted and fixed by a plurality of fixing tools 11 such as bolts.

  An inlet 13 is provided on one side wall 9A of the upper box 9. The inflow port 13 receives an air flow including chips generated during tapping from a processing position of a tapping machine (not shown) provided in a punch press or a punch / laser combined machine (not shown), for example. For example, the inlet 13 is connected to the tapping position through a suction duct, a suction hose, and the like. An outlet 15 is provided at a position higher than the inlet 13 on the other side wall 9 </ b> B of the upper box 9.

  The outlet 15 is connected to a negative pressure generator (not shown). The negative pressure generating device can be used for both suction removal of scrap generated during punching and suction removal of chips generated during tapping.

  The inflow port 13 is constituted by a pipe 17, and the pipe 17 is connected to an expansion chamber 19 provided in the upper box 9 below the outflow port 15. The expansion chamber 19 has a configuration in which only the lower side is opened, and an air flow that flows into and out of the expansion chamber 19 is inclined to the opening in a direction opposite to the inflow direction into the expansion chamber 19. A guide plate 21 for guiding downward is provided so as to be inclined so that the inlet 13 side is lowered. In the expansion chamber 19, the pipe 17, that is, the facing surface facing the inflow port 13, has a plurality of airflows flowing in the expansion chamber 19 from the inflow port 13. An air flow dividing means 23 having a triangular cross section for dividing the air flow is provided.

  With the above configuration, when the air flow that has flowed into the expansion chamber 19 from the inlet 13 is divided into right and left by the air flow dividing means 23 and flows downward from the opening, air flows into the expansion chamber 19. It is guided by the guide plate 21 in the opposite direction and obliquely downward.

  Between the one side wall 9A of the upper box 9 and the expansion chamber 19, an ascending passage 25 communicating with the outflow port 15 is provided, and on the lower side of the ascending passage 25, the one side wall 9A is provided. A rise inhibition plate 27 is provided on the inner surface. The ascending inhibition plate 27 is guided by the guide plate 21 and flows obliquely downward, so that the air flow contacting the facing wall surface 7A of the lower box 7 facing the guiding plate 21 is along the inner surface of the one side wall 9A. Therefore, the guide plate 21 is inclined so as to be lowered.

  The air flow rising in the ascending passage 25 flows out from the outlet 15 through the passage 29 between the upper plate 9C of the upper box 9 and the upper portion of the expansion chamber 19. The outlet 15 is provided with a filter 31 so as to be detachable, and the upper plate 9C is provided with a window (not shown) for attaching and detaching the filter 31. The closing plate 33 is detachably attached by a plurality of fixtures 35 such as bolts.

  In the configuration as described above, when the negative pressure generating device is driven and the air in the chip separating device 1 is sucked and discharged from the outlet 15, the inside of the chip separating device 1 becomes negative pressure and sucks outside air from the inlet 13. Will do. Therefore, air containing chips generated during tapping is introduced into the inlet 13.

  When the air flow containing chips flows into the expansion chamber 19, the flow path of the air flow is rapidly expanded, and the flow velocity of the air flow becomes low. As shown in FIG. 5 (A), the air flow flowing into the expansion chamber 19 abuts on the air flow dividing means 23 provided facing the inlet 13, and the air flow is divided into air flows. Along the inclined surface of the means 23 in the left-right direction, the means 23 is divided into two in the left-right direction. Thereafter, the air flow flowing downward from the expansion chamber 19 is guided by the guide plate 21 by the inertia flowing in from the pipe 17 and directed obliquely downward. The air flow divided into two as described above tends to flow in the direction of the opposing wall surface 7A along the inner surfaces of the opposing side walls 7B and 7C of the lower box 7.

  Although the air flow in contact with the opposing wall surface 7A is directed downward along the opposing wall surface 7A, a part of the air flow tends to rise along the opposing wall surface 7A. The rise is stopped by. Therefore, the flow of air in contact with the opposing wall surface 7 </ b> A becomes a swirling flow that flows in the opposite direction along the bottom surface of the base frame 3. At this time, centrifugal force in the downward direction acts on the chips contained in the air flow and gravity acts, so that the separation and removal of the chips from the air flow is effectively performed.

  The inertial motion of the air flow generated by flowing into the pipe 17 from the inlet 13 gradually becomes weak. Then, the air after the chips are separated and removed in the chip separating device 1 is sucked and raised in the rising passage 25 by the suction action acting on the outlet 15, and passes from the outlet 15 to the outside through the passage 29. It will be leaked. As described above, when the air flow is directed obliquely downward along the guide plate 21, a part of the air flow tends to be sucked into the ascending passage 25. It will turn to the upward flow from. Therefore, even in this case, the chips in the air flow can be separated and removed effectively.

  As will be understood from the above description, it acts when the air flow containing the chips is sucked into the inside by the negative pressure acting in the chip separation device 1 and the air flow swirls from the downward flow to the upward flow. Since the centrifugal force is applied to the chips and gravity is applied to the chips to separate and remove the chips from the air flow, the chips must be separated and removed effectively. It is something that can be done. Further, since the air flow flowing into the chip separation device 1 from the inlet 13 is divided by the air flow dividing means 23, the air flow becomes a finer flow, so that the chips are separated from the air flow. Removal can be performed more easily.

DESCRIPTION OF SYMBOLS 1 Chip separator 3 Base frame 7 Lower box 7A Opposite wall surface 9 Upper box 9A One side wall 9B Other side wall 13 Inlet 15 Outlet 17 Pipe 19 Expansion chamber 21 Guide plate 23 Air flow dividing means 25 Ascending passage 27 Ascending inhibition plate 29 aisle

Claims (3)

A chip separation device for separating chips contained in an air flow, wherein an upper box is detachably provided on an upper part of a lower box for storing chips, and chips are disposed on one side of the upper box. with an outlet of the air flow on the other side of the upper box provided with a inlet air stream containing, in a position lower than the outlet, e Bei expansion chamber having an open bottom, one side The inlet and the expansion chamber provided below the outlet on the other side are connected by a pipe having a cross-sectional area smaller than the cross-sectional area of the expansion chamber, and the one side of the upper box between parts and the expansion chamber, provided with a rising passage air flow toward the outlet, the opening of the expansion chamber, a direction opposite to and obliquely downward in the inflow direction of air into the expansion chamber characterized in that it comprises a guide plate for guiding the air flow to the rising passage side direction Chips separation device to.   2. The chip separation device according to claim 1, further comprising an air flow dividing unit configured to divide an air flow flowing into the expansion chamber into a plurality of air flows on a facing surface facing the inlet in the expansion chamber. A chip separator characterized by that.   3. The chip separating apparatus according to claim 1 or 2, further comprising an ascending inhibition plate that inhibits an increase in airflow guided obliquely downward by the guide plate at a position facing the guide plate. A featured chip separator.

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