JPS626942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a chip transport conveyor that transports chips such as cutting waste or press punching waste discharged from various machine tools by circular movement of an endless transport member. It is something.

Prior Art For example, in a floor type conveyor in which a conveyor belt 4 is constructed by connecting a large number of hinge plates 6 as shown in FIG. Relatively large chips in the form of lines or blocks are not washed away by the coolant, but remain on the conveyor belt 4 and are successively conveyed as the belt moves around. However, fine powdery chips such as those from castings flow out together with the coolant through the gap created between the conveyor frame 1 and the conveyor belt 4, and remain on the bottom of the conveyor frame 1, or the coolant tank T (first (see Figure 3). Therefore, in the conventional conveyor of this type, not only the efficiency of conveying powdered chips decreases, but also the remaining chips impede the rotation movement of the conveyor belt 4, and cleaning the inside of the coolant tank T is troublesome. There was a problem with getting it.

Purpose This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to reduce the amount of spilled chips with a simple configuration, avoid mechanical troubles, and facilitate maintenance of the coolant tank. It is an object of the present invention to provide a novel chip conveyor that can efficiently collect powdered chips.

First Embodiment A first embodiment in which the present invention is embodied in a floor-type chip conveyor will be described below with reference to FIGS. 1 to 3.

As shown in FIG. 1, a machine frame 1 of this chip conveyor is composed of a horizontal conveying path 2 extending horizontally and having an open upper surface, and an inclined conveying path 3 rising obliquely upward. An endless conveyor belt 4 is installed in both conveyance paths 2 and 3 so as to be able to go around, and by driving a gear motor 5 installed on the upper end surface of the inclined conveyance path 3, the upper surface of the conveyor belt 4 is moved to the horizontal conveyance path. 2 side to the inclined conveyance path 3 side.

The conveyor belt 4 is composed of a large number of steel hinge plates 6 to 7 (see FIG. 2) that are rotatably connected to each other, and each hinge plate 6 has a predetermined number of hinge plates 6 to 7.
A scraper plate 7 extending along the width direction of the conveyor belt 4 is welded and fixed to the upper surface of the conveyor belt 4 in an upright state. During the rotation of the conveyor belt 4, relatively large chips, particularly linear and block-shaped chips, are conveyed upwardly by the front surface of each scraper plate 7 within the inclined conveyance path 3.

On the other hand, between the hinge plate 6 at a predetermined position of the conveyor belt 4, a
A plurality of stainless steel magnet storage boxes 8 are arranged, and as shown in FIG.
It is rotatably connected to.

On the inner wall surface of each magnet storage box 8, there are two guide plates 10 and 11, front and rear, extending along the longitudinal direction of the storage box 8.
are welded and fixed so that they face each other almost diagonally. These guide plates 10 and 11 are formed by bending narrow straight portions 10a and 11a, respectively, and wide curved portions 10b and 11b that bulge outward, respectively, and the bending angles of these portions in the front guide plate 10 are at right angles. The bending angle of the rear guide plate 11 is an acute angle close to a right angle.
Therefore, in FIG. 2, between the straight portion 10a of the front guide plate 10 and the upper plate 8a of the magnet storage box 8, there is a first magnet holder whose spacing increases toward the center of the magnet storage box 8. A space S1 is formed, and a second magnet holding space S2 is formed between the straight portion 11a of the rear guide plate 11 and the lower plate 8b of the magnet storage box 8, and the space becomes narrower toward the center of the storage box 8. Further, a magnet falling path S3 is formed at a predetermined interval between each curved portion 10b, 11b of both guide plates 10, 11. Note that a plurality of plate-shaped regulating pieces 12 are fixed to the inner surface of the rear side plate 8c of the magnet storage box 8 so as to protrude into the second magnet holding space S2.

Inside the magnet storage box 8, both the front and rear guide plates 1
Between 0 and 11, a magnet bar 13 is loosely inserted, which is formed by connecting a plurality of cylindrical permanent magnets 13a in the longitudinal direction via aluminum plates 14 and housing them in a stainless steel pipe 15. As shown in FIG. 3, as the magnet storage box 8 is reversed as the conveyor belt 4 rotates, the magnet bar 13 passes through the magnet falling path S3 based on its own weight and enters the first magnet holding space S1. Second magnet holding space S2
It is now being moved between

Next, the operation of the floor type chip conveyor constructed as described above will be explained.

Now, as shown in FIG. 1, chips released from various machine tools together with coolant from the open part of the machine frame 1 onto the conveyor belt 4 in the horizontal conveyance path 2 are conveyed on an inclined plane as the conveyor belt 4 moves around. Transferred to the road 3 side. At this time, since the straight portion 11a of the rear guide plate 11 is tilted downward toward the rear side plate 8c, the magnet bar 13 in the magnet storage box 8 is
As shown at point A in FIG. 3, the linear portion 11a of the rear guide plate 11 prevents the magnet from falling downward, and the magnet is located in the second magnet holding space S2. For this reason,
Powdered chips P are attracted to the upper surface of the magnet storage box 8. Therefore, the amount of powdered chips P flowing out to the lower side of the conveyor belt 4 together with the coolant can be reduced compared to the conventional case. In the inclined conveyance path 3, the powder chips P remain attracted to the magnet storage box 8, and the linear and lump chips are placed on the upper surface of each hinge plate 6, and each scraper plate 7 They are each conveyed upward one after another while being received on the front side of the screen.

Next, as shown at point B in FIG. 3, as the magnet storage box 8 reaches the upper end of the conveyor frame 1 and the conveyor belt 4 begins to move downward, the magnet storage box 8 is reversed. Then, the magnet bar 13 passes through the fall path S3 due to its own weight and falls into the first magnet holding space S.
It will fall within 1. As a result, the magnetic force acting on the attraction surface of the magnet storage box 8 weakens and the adsorption state is released, and the powdered chips P fall and are released due to their own weight as the magnet storage box 8 reverses, as shown at point C. be done. At this time, the linear and lump-like chips are separated from the hinge plate 6 and the scraper plate 7, and are collected together with the powder chips P into a collection box (not shown) installed under the conveyor frame 1. .

When the magnet storage box 8 that has released the powder chips P descends down the lower side of the inclined conveyance path 3 as the conveyor belt 4 moves around, and reaches the lower side of the horizontal conveyance path 2, D As shown at the point, magnet storage box 8
is in a horizontal state, and the straight section 1 of the front guide plate 10
Since the magnetic bar 13 tilts downward toward the falling path S3, the magnetic bar 13 moves toward the falling path S3 due to its own weight.
3 into the second magnet holding space S2, and comes to rest in a state where the position is regulated by the regulating piece 12.
Therefore, as shown in the figure, when the conveyor frame 1 is installed in the coolant tank T, powdery or fine-grained chips remaining on the bottom plate of the tank T or floating in the coolant W can be removed. As shown at point E, the powdered chips P
The magnets are attracted and collected on the lower surface of the magnet storage box 8 by the magnetic force of No. 3. Therefore, according to the chip conveyor of this embodiment, the amount of powdered chips P mixed in the coolant W can be further reduced compared to the conventional one. It is possible to prevent troubles such as clogging of the coolant tank T, and the number of periodic cleaning operations of the coolant tank T can be significantly reduced.

Furthermore, even when the conveyor frame 1 is not installed in the coolant tank T as shown in FIG. 1, the conveyor frame 1 and the conveyor belt 4
Powdered chips P that spilled from the gap between the
Since the chips are more efficiently adsorbed and collected, there is no possibility that residual chips will become trapped between the conveyor belt 4 and the bottom plate of the machine frame 1 and interfere with the rotational movement of the conveyor belt 4, unlike in the conventional case.

In this way, the magnet storage box 8 that has attracted the powder chips P is moved to the upper side of the horizontal conveyance path 2 while being reversed as the conveyor belt 4 rotates, as shown at point F. However, in this case, as described above, the straight portion 11a of the rear guide plate 11 is tilted downward toward the rear plate 8c of the magnet storage box 8, so even if the magnet storage box 8 is reversed by 180 degrees (A (see point), the powder chips P can be reliably attracted to the upper surface of the magnet storage box 8 and transported without the magnet bar 13 falling due to its own weight.

Second Embodiment Next, a second embodiment in which the present invention is embodied in a scraper type chip conveyor will be described with reference to FIGS. 4 and 5.

Two endless chains 21 facing each other are attached to a conveyor machine frame (not shown) so as to be able to go around, and two guide rails 22 fixed on the bottom plate 26 of the coolant tank T are connected to the connecting points of each chain element 21a. A roller 23 that can roll on the upper surface is provided respectively. A plurality of plate-shaped scrapers 24 (only one is shown in FIG. 5) are installed at equal intervals between both endless chains 21, and extend in a direction perpendicular to the conveyance direction. It is screwed and fixed to the corresponding chain element 21a via the chain element 21a. The tip of each scraper 24 extends to a position close to the bottom plate 26 of the coolant tank T, and as the endless chain 21 moves around, each scraper 24 presses the linear and block-shaped chips P1 with its front surface. The coolant is then discharged to the outside from a discharge chute 27 provided at the front edge of the coolant tank T.

On the other hand, a plurality of magnet storage boxes 28 extending parallel to the scraper 24 are installed between both endless chains 21 at a predetermined position, and the chain elements 2 facing each other are connected by mounting pieces 29 protruding from both end surfaces of the magnet storage boxes 28.
It is screwed and fixed to 1a. Guide plates 30 are welded and fixed to the inner wall surfaces of both end portions of each of these magnet storage boxes 28, and a substantially U-shaped guide recess 30a with one end open is formed in a substantially diagonal direction thereof. Further, a magnet bar 13 extending along the longitudinal direction is movably housed in each magnet housing box 28, and both ends thereof are fitted into the guide recesses 30a of the guide plate 30, respectively. Then, as shown in FIG. 5, as the endless chain 21 rotates, the magnet storage box 28 is reversed, and the magnet rod 13 is guided by both guide plates 30 inside the magnet storage box 28. It is designed to move by its own weight between a suction position in contact with a wall surface and a non-suction position spaced apart from the suction position.

A magnet roller 32 is rotatably supported on the conveyor frame above the delivery chute 27 so as to approach and face the magnet storage box 28, and the powder chips P discharged from the magnet storage box 28 are After being forcibly attracted to the outer peripheral surface by the magnetic force of the magnet roller 32, it is scraped off by a scraping plate 33 connected to the magnet roller 32.

Therefore, according to this scraper type chip conveyor, when the magnet storage box 28 moves within the coolant tank T, the magnet bar 13 is attracted by its own weight as shown at point G in FIG. Therefore, the powder chips P floating in the coolant W can be attracted and held on the lower surface of the magnet storage box 28 by the magnetic force of the magnet rod 13.

In this state, as the endless chain 21 moves around, the magnet storage box 28 is raised to the outside of the coolant tank T (point H) and when it faces the magnet roller 32, the magnet storage box 28 is reversed. Therefore, the magnetic bar 13 is attached to the guide plate 30.
is guided by the guide recess 30a and moves to the non-suction position, and the suction state is released. Therefore, the powder chips P discharged from the magnet storage box 28 are collected into a collection box or the like via the magnet roller 32 and the scraping plate 33. Therefore, in this embodiment as well, as in the first embodiment, the powdery chips P mixed in the coolant can be efficiently collected and removed.

Modifications Note that the present invention is not limited to the configurations of the two embodiments described above, and can be embodied in each modification described in the next section.

(1) In the first embodiment, as shown by the chain line in FIG.
(See point C), a magnet roller 41 is rotatably provided to forcibly adsorb and collect chips that still adhere to the magnet storage box 8, each hinge plate 6, and the scraper plate 7 after being released. .

(2) Similarly, as shown by the chain line in FIG. 3, a brush 42 is provided so as to come into contact with the outer surface of the magnet storage box 8 after the chips have been discharged, so that the powdery chips P can be removed more reliably.

(3) As shown in FIG. 6, the magnet storage box 43 is formed to have a rectangular cross section, and a triangular first holding plate 45 for holding the magnet bar 13 and a magnet A triangular second holding plate 46 for allowing the falling movement of the rod 13 is provided in a protruding manner so that their hypotenuses are parallel to each other and face each other. This increases the distance between the attracted position and the non-attracted position of the magnetic bar 13, so that the demagnetization effect when the magnet bar 13 is not attracted can be further improved.

(4) As shown in FIG. 7, the front and rear 2
The guide pieces 49 and 50 are fixed by welding, and the rear guide piece 50 has a position regulating piece 51.
to be integrally formed.

(5) In the second embodiment, if the chip discharge position of the magnet storage box 28 is set to the outside of the coolant tank T, the powder chips P will fall onto the delivery chute 27 due to its own weight, so the magnet roller 32 and scraping plate 33 are no longer necessary,
Configuration becomes easier. Also in this second embodiment, the brush 42 can be installed to improve the collection efficiency of the powdered chips P.

(6) The structure and shape of the magnetic bar 13 in each of the above embodiments may be arbitrarily changed.

Effects As detailed above, in the present invention, a magnet container is arranged along the width direction of an endless conveying member at a predetermined position, and a permanent magnet for chip attraction is installed inside the magnet container. The permanent magnet is housed so that when the magnet housing is reversed as the conveying member rotates, the permanent magnet is moved by its own weight, and the inside of the magnet housing is configured to prevent the permanent magnet from moving. By providing a guide portion for guiding the permanent magnet and configuring it to move between one position close to the inner wall surface of the magnet housing and the other position away from there, a simple structure can be achieved. The structure reduces the amount of chips that are washed away, avoids mechanical troubles, and facilitates maintenance of the coolant tank. It also has the effect of efficiently transporting powdered chips, making it easier to transport chips. This is an industrially excellent invention as a conveyor.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a perspective view showing the entire floor type chip conveyor, and FIG. 2 is an enlarged perspective view showing the main parts. , FIG. 3 is a schematic cross-sectional view showing the conveying action. FIGS. 4 and 5 show a second embodiment in which the present invention is embodied in a scraper type chip conveyor.
FIG. 4 is a sectional view of the main part, and FIG. 5 is a schematic side sectional view showing the conveying action. FIGS. 6 and 7 show different modifications of the present invention, with FIG. 6 being an explanatory view of the operation, and FIG. 7 being a sectional view of the main part. Conveyor belt...4, Magnet storage box...8, 28, Front guide plate...10, Rear guide plate...11, Magnet bar...1
3. Endless chain...21, Information board...30,
Powdered chips...P.

Claims (1)

[Scope of Claims] 1. In a chip conveyor that conveys chips P such as cutting waste by circular movement of endless conveying members 4, 21, the width of the conveying members 4, 21 is set at a predetermined position. Magnet containers 8 and 28 extending along the direction are disposed, and a permanent magnet 13 for attracting chips is housed inside the magnet containers 8 and 28, and the conveying members 4 and 21 are
When the magnet housings 8 and 28 are reversed as the magnet housings 8 and 28 rotate, the permanent magnets 13 are moved by their own weight, and the permanent magnets 13 are moved inside the magnet housings 8 and 28. Guide portions 10, 11, and 30 are provided for guiding the magnet accommodating bodies 8, 28, and the magnet housings 8, 28 are configured to move between one position close to the inner wall surface and the other position away from there. A conveyor for transporting chips. 2. Claim 1, wherein the conveying member is a conveying belt 4 connecting a large number of hinge plates 6.
Conveyor for transporting chips as described in Section 1. 3 The conveyance member is two endless chains 21 in which multiple scrapers 24 are installed and fixed in the width direction.
A chip conveyor according to claim 1. 4. The chip conveying device according to claim 1, wherein the permanent magnet 13 is a plurality of cylindrical magnets 13a connected in the longitudinal direction and housed in a cylindrical pipe 15 made of a magnetic material. conveyor. 5 The guide portion is a pair of guide plates 10 and 11 facing each other at the front and rear of the magnet housing 8, and both guide plates 10,
11, there are two magnet holding spaces S spaced apart from each other.
1, S2, and a magnet falling path S3 connecting both these spaces S1, S2.
Conveyor for transporting chips as described in Section 1. 6. The chip transport conveyor according to claim 5, wherein the one holding space S2 holds the permanent magnet 13 stationary until the reversal angle of the magnet container 8 exceeds 180 degrees. 7 The guide portion is a plurality of guide plates 30 fixed within the magnet container 28, and each guide plate 30 has a substantially U-shaped guide recess 30a opening toward the outer circumference of the magnet container 28 in an oblique shape. A chip conveyor according to claim 1, wherein a cutout is formed in the chip conveyor.