JPS6116042Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a conveyor for transporting cutting waste, which forcibly transports cutting waste discharged from various machine tools by reciprocating motion of a pressing rod extending in a conveying pipe. It is.

Prior Art In general, in this type of conveyor, cutting debris tends to accumulate in the proximal conduit where the driving cylinder is installed, so a wiper is installed at the tip of the cylinder rod. The wiper operates to constantly push cutting debris forward. However, since cutting oil normally flows into the pipe from the machine tool side together with cutting waste, cutting oil A flows into the wiper 51 as shown in FIG.
If the pressurized cutting oil A passes through a small gap between the wiper 51 and the proximal wall 53 and stays between the wiper 51 and the proximal wall 53, the pressurized cutting oil A passes through the pipe 52 when the wiper 51 returns to the rear. There was some leakage to the outside from the joint between the top plate 54 and the top plate 54.

Purpose This invention was made in order to solve the above-mentioned conventional inconvenience, and its purpose is to provide a passage for the cutting oil stagnant in the proximal end pipe to flow back to the pressing rod side. Therefore, it is an object of the present invention to provide a cutting waste conveyor that can reliably prevent leakage of cutting oil to the outside.

Embodiment Hereinafter, an embodiment embodying this invention will be described based on the drawings.

As shown in Fig. 1, a side plate 2 is fixed to the base end surface of a conveying conduit 1 having a substantially U-shaped cross section and installed around various machine tools, and a cylinder 3 as a driving member is attached to the outer surface of the side plate 2. It is worn. A connecting screw 5 is formed at the distal end of the rod 4 of the cylinder 3, a nut 6 is screwed onto the base end thereof, and a universal joint 7 is screwed onto the distal end.

A wiper 8 is fixedly fixed to the connecting screw 5 between the nuts 6 and the universal joint 7, and the outer surface is attached to the tip of each protrusion 8a bent forward from both sides and the lower end is conveyance pipe 1
A rubber contact piece 9 is fixedly attached to the inner peripheral surface of the housing. When the cylinder 3 is driven, the wiper 8 slides back and forth to always push the cutting chips forward so that they do not stay in the base end of the conveying pipe 1.

A cylindrical pressing rod 10 extending to the bottom of the conveying pipe 1 is fitted and fixed at the tip of the universal joint 7 . As shown in FIG. 2, a large number of pressing bodies 11 are fixed to the lower outer circumferential surface of the pressing rod 10 in the longitudinal direction, the width of which becomes wider toward the front, and a generally upright pressing surface 12 is provided at the front of the pressing rod 10. It is formed. Also,
A large number of movable triangular locking pieces 13 are protruded at equal intervals in the longitudinal direction on the outer peripheral surface of the top of the pressing rod 10, and a pressing portion 14 forming an acute angle with respect to the pressing rod 10 is formed on the front end surface thereof. has been done.

When the cylinder 3 is driven, the pressing rod 10 is reciprocated back and forth while the lower surface of each pressing body 11 is in sliding contact with the bottom surface of the conveying pipe 1. Each latch piece 13
Powder-like or linear cutting waste inside the conveyance pipe 1 is pushed out forward by the pressing part 14 .

On the other hand, a large number of wall hooking pieces 15 having the same shape as the hooking pieces 13 are protruded at equal intervals on both sides of the inner wall of the conveyance pipe 1 in the longitudinal direction thereof.
A holding convex portion 16 is formed on the lower side of each of these wall hooking pieces 15 . A holding part 17 and a holding part 18 are formed at the front end of each joint of each wall hooking piece 15 and holding convex part 16, respectively, and as the pressing rod 10 moves back, cutting waste is moved backward. It has a function to prevent it from moving backwards.

As shown in FIG. 1, a net-shaped discharge port 19 is formed at the lower end of one side wall at the front end of the conveyance pipe 1, and the cutting oil flowing into the conveyance pipe 1 from the machine tool side together with cutting waste is It is fed through this discharge port 19 to a recovery device (not shown). Further, a ramp-like inclined pipe 20 is connected to the front end of the conveyance pipe 1, and after guiding the cutting waste upward, it is discharged to a subsequent cutting waste transfer device (not shown).

By the way, as shown in FIG. 2, a rectangular parallelepiped-shaped closing member 21 is fitted inside the side plate 2 on the upper surface of the base end of the conveyance conduit 1, and is secured to both side walls of the conveyance conduit 1 by four fixing screws 22. It is screwed to.
Then, the wiper 8 is reciprocated with the lower surface of the closing member 21 and the upper end surface of the wiper 8 approaching each other, and the position of the reciprocating end is determined by the regulating protrusion 23 formed protrudingly on the lower surface of the front end of the closing member 21. It's just before.

A pair of first through holes 24, a second through hole 25, and a pair of third through holes 26 are formed in the bottom plate of the closing member 21 from the proximal end to the distal end. As shown in FIG. 4, when the wiper 8 is disposed at the backward movement end position, the first through hole 24 is located immediately behind the wiper 8, and the second and third through holes 25, 26 is located in front of the wiper 8. Therefore, in this state, there is a first transparent space between the driving member side space BS and the pressing rod side space FS, which are partitioned by the wiper 8 in the conveying pipe 1, as shown by the arrow in the figure. Hole 24
and the second and third through holes 25 and 26.
is beginning to form.

Next, the operation of the cutting waste conveyor configured as above will be explained.

When cutting chips are discharged from various machine tools into the conveyor pipe 1, sand-like chips stay at the bottom of the pipe 1, and linear or helical cutting chips are stacked on top of the chips. be done. When the cylinder 3 is operated in this state and the pressing rod 10 is reciprocated, chips are released from each pressing body 1.
1 is pushed forward by the pressing surface 12 of the movable locking piece 13, and the cutting is caught by the pressing portion 14 of the movable locking piece 13 and transferred forward.

Then, the transferred chips and chips are held at the transfer position by the holding part 17 of the wall hanging piece 15 and the holding surface 18 of the holding convex part 16, respectively, so that as the rod 4 moves back, Independent return of the pressure rod 10 is allowed. Therefore, by performing these operations continuously, the cutting waste can be sequentially sent forward and fed from the front end of the inclined pipe 20 to a subsequent transfer device, collection box, or the like.

On the other hand, the cutting oil that has flowed into the conveying pipe 1 together with the cutting waste is discharged to the discharge port 1 as the pressure rod 10 reciprocates.
Flowing towards 9. However, since it is extremely difficult to achieve a completely watertight state between the contact piece 9 of the wiper 8 and the inner circumferential surface of the conveying pipe 1, a small amount of cutting oil A is generated between the two over time. The liquid flows through the gap into the drive member side space BS on the back side of the wiper 8, as shown in FIG.

When the flowing cutting oil A accumulates in the space above the allowable amount, the wiper 8 returns to its original position, and the cutting oil A is pressurized between the wiper 8 and the side plate 2. At this time, as shown in Fig. 5, in the conventional case, the drive member side space BS is closed by the wiper 51, the base end wall 53, and the top plate 54, so that the pressurized cutting oil A leaks from the joint between the top plate 54 and the pipe 52 to the outside, causing inconvenience such as soiling the floor surface.

However, in this embodiment, as described above, since the communication path R is provided between the driving member side space BS and the pressing rod side space FS of the conveying pipe 1, when the wiper 8 moves back, as shown in FIG. As shown in , the cutting oil A in the drive member side space BS first
After flowing into the closing member 21 through the through hole 24 , it flows out from the second and third through holes 25 and 26 in front of the wiper 8 . Therefore, cutting oil A
There is no risk of the oil leaking out of the conveying pipe 1, a clean and safe working environment can be maintained, and the recovery efficiency of the cutting oil A can be improved.

Note that this invention is not limited to the above-mentioned embodiments; for example, a valve may be provided in the wiper 8 or the closing member 21 to form a communicating path, or the number of through holes provided in the closing member may be increased or decreased as appropriate. It is also possible to arbitrarily change the structure or shape of each part without departing from the spirit of the invention.

Effects As detailed above, this invention includes a closing member 21 that closes the upper surface of the conveying pipe 1 in the vicinity of the connecting portion between the driving member 3 and the pressing rod 10, and this closing member 2.
A wiper 8 that slides on the inner circumferential surface of the conveying conduit 1 on the lower side of the wiper 1, and a communication path R that allows communication between the pressing rod side space FS and the driving member side space BS, which are partitioned by the wiper 8. By providing this, an excellent effect is achieved in that leakage of cutting oil to the outside of the conveying pipe 1 can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of the main parts of a cutting waste conveyor showing an embodiment of this invention;
The figure is a perspective view of the main part, FIGS. 3 and 4 are explanatory views showing different operating states, and FIG. 5 is an explanatory view showing a conventional configuration. A conveyance pipe line 1, a cylinder 3 as a driving member,
Wiper 8, pressing rod 10, closing member 21, pressing rod side space FS, driving member side space BS, communication path R.

Claims (1)

[Claims for Utility Model Registration] 1. In a conveyor for conveying cutting waste forcibly conveying cutting waste in a conveying pipe 1 by reciprocating motion of a pressure rod 10, the above-mentioned cutting waste in the vicinity of the connecting portion between the driving member 3 and the pressure rod 10 is provided. A closing member 21 for closing the upper surface of the conveying pipe 1; and a lower side of the closing member 21, the pressing rod 10.
A wiper 8 slides on the inner circumferential surface of the conveying pipe 1 with the reciprocating movement of the wiper 8 and prevents cutting debris on the pressing rod 10 side from entering the driving member 3 side.
and a conveying pipe line 1 divided by the wiper 8
A conveyor for conveying cutting waste, characterized in that it is provided with a communication path R that allows communication between a pressing rod side space FS and a driving member side space BS. 2. The cutting waste conveyor according to claim 1, wherein the communicating path R is formed by a plurality of through holes 24, 25, and 26 provided on the lower surface of the upper closing member 21.