JP5199832B2 - Chain conveyor - Google Patents

Description

  The present invention relates to a chain conveyor comprising a plurality of plate plates for conveying a conveyed product, side plates attached to the left and right sides of the plate plates, and left and right endless chains for attaching the plate plates via the side plates. .

  For example, a chain conveyor is used when transporting and collecting a transported object such as chips (metal chips) from a machine tool such as a lathe or a milling machine. This chain conveyor is also called a chip transfer conveyor, and a plurality of plate plates are continuously attached between the endless chains on the left and right sides and spanned between a drive shaft and a driven shaft to form a transfer path. Yes, transported objects (chips, metal chips, etc.) placed on the plate plate are transported.

In many cases, the transported material transported by such a chain conveyor is mixed with liquid (coolant liquid) such as chips discharged together with the coolant liquid from a machine tool such as a lathe or a milling machine. However, when this liquid stays on the plate plate, there arises a problem that the conveyed product is collected in a state where the liquid is mixed, or the drive shaft is loaded with the liquid load. Therefore, the applicant of the present application has already applied for a patent on a chain conveyor that discharges the liquid while leaving the conveyed product on the plate (see Patent Document 1 below). In this chain conveyor, a passage hole for allowing liquid to pass is formed in the plate plate, and by allowing the liquid to pass through the passage hole, only the liquid can be discharged while the conveyed product remains. The passage hole is formed as a large number of pores and the passage hole captures the conveyed product (see FIGS. 14 and 15 of Patent Document 1 below), and is formed as a large hole and has a mesh. To capture the conveyed product (see FIGS. 11, 12, and 13 of Patent Document 1 below). It should be noted that the coolant liquid cannot be reused unless the chips (metal chips) discharged together with the coolant liquid from a machine tool such as a lathe or a milling machine are separated from the liquid (coolant liquid). Filter (separate) by a filtration device such as a rotating drum. However, in such a rotary drum type filtration device, efficient separation is not performed for an increase in the size of the device. On the other hand, when the coolant liquid mixed with chips stays on the plate plate, the liquid is mixed. There arise problems that chips are collected in the state, the drive shaft is loaded with a liquid load, and chips and coolant liquid stick to the plate plate and cannot be easily cleaned.
JP 2007-197222 A

  The applicant of the present application discloses a chain conveyor (see FIG. 16 of Patent Document 1) in which a number of fine protrusions are provided on a plate plate in Patent Document 1 described above. Although the coolant liquid easily adheres to the plate plate, it is difficult to attach the coolant due to the fine protrusions, and an effect such as easy cleaning can be obtained.

  As described above, in Patent Document 1, as a plate plate, (1) a passage hole having a large number of pores, (2) a mesh having a large passage hole, and (3) a large number of protrusions are provided. However, the following problems have occurred.

  In the case of a plate plate having a large number of passage holes (see FIG. 14 of Patent Document 1), there has been a problem that liquid remains on the plate plate. The cause is as follows.

  First, the surface of the plate plate has a region in which no through hole is formed (a region between the through hole and the through hole), and there is a situation in which liquid remains there. In particular, oily liquids such as coolant liquids and viscous liquids are likely to adhere to the plate plate surface, which is a major cause of liquid remaining.

  Secondly, conveyed items such as chips vary in size, and the conveyed item may flow into the passage hole. For this reason, in the above prior art, the conveyed product is caught in the middle of the passage hole, causing clogging, and a situation in which the passage of the liquid is hindered has occurred.

  Thirdly, as shown in FIG. 10 of Patent Document 1, the chain conveyor often has an inclined region where the conveying path is inclined. In this case, the plate plate is also inclined, and the liquid flows on the surface of the plate plate along the inclination. However, the passage holes formed as the above-mentioned many pores have the inflow ports facing upward (the passage holes penetrate the mounting surface in the thickness direction and are formed in the same size in the penetration direction. Because of this, the liquid that has flowed on the surface of the plate plate sometimes exceeded the inlet without flowing into the inlet due to the force of the flow (does not pass through the passage hole due to the surface tension of the liquid). There was a thing.) For this reason, the situation where the passage efficiency of the liquid fell especially in the inclination area | region has arisen.

  If the liquid remains on the plate plate in this way, it is not preferable from the viewpoint of collecting only the above-mentioned transported object or from the viewpoint of reducing the load on the drive shaft due to the load of the liquid. There has also been a situation in which the object is attached to the plate plate, and it becomes difficult to collect the conveyed product from the plate plate.

  Furthermore, the plate plate captures the conveyed product through the passage hole. However, since the liquid tends to remain as described above, the passage hole must be formed to a certain extent in order to be effective, and it passes without being captured. There were not a few transported items that passed through the holes.

  On the other hand, in order to reduce the residual liquid, a plate plate (see FIG. 11 of Patent Document 1) in which a through hole provided with a mesh is formed is preferable, but in this case, the strength of the mesh is insufficient. . There are various things to be conveyed, and depending on the weight and shape, the mesh may be damaged. In particular, since the chips discharged from the lathe are large in size, there are many cases in which the mesh is broken by the load, which has been a serious problem. For this reason, there has been a strong demand for a technique for reducing liquid residue with a high-strength structure.

  Further, the plate plate (see FIG. 16 of Patent Document 1) on which fine protrusions are formed has a problem that the passage hole is not formed and the liquid on the plate plate stays and is not discharged.

  Accordingly, an object of the present invention is to allow a liquid such as a coolant to pass through the plate plate, but to prevent a transported object such as a metal tip from passing even a small object, and to adopt a high strength structure without adopting a mesh structure. It is to provide a chain conveyor that can be realized.

Chain conveyor of the present invention includes a plurality of plate plate having a mounting surface on which the conveyed object is placed, in a chain conveyor with a chain in which the plate plate is attached to said plate plate has a plurality of projections and a plurality of passage holes are provided for passing the liquid, the passage hole is the mounting surface side inlet of the plate board, the back side of the plate plates has a flow outlet, the inlet of the passage hole but it characterized in that it is formed in a plurality of the protrusions. The present invention is characterized in the that direction of the outlet of the passage hole is wider than the inlet of the passage hole.

According to this invention, since the plate plate is formed with a plurality of protrusions and a plurality of passage holes for allowing liquid to pass therethrough, when a transported object in which liquid is mixed is placed on the plate plate, Is captured by the passage hole, but the liquid is bounced by the protrusion and collected near the inlet of the passage hole and passes through the passage hole. This makes it difficult for the liquid to remain on the plate. When the metal chip (chip) is contained in the liquid (coolant liquid), the passage hole captures the metal chip (chip), but when the liquid (coolant liquid) is removed, The metal chip (chip) is detached from the mounting surface so that it can be repelled.
In addition, since the passage hole has a larger outlet than the inlet, even if the conveyed product flows into the passage hole, it is discharged without clogging in the middle of the passage hole. In addition, unlike the passage holes simply formed on the flat mounting surface other than the conventional protrusions, the inflow port on the mounting surface side is formed using each of the plurality of protrusions. Therefore, the liquid such as a coolant liquid is allowed to pass through without passing a transported object such as a metal tip.
Therefore, the situation where the liquid remains on the plate plate due to the clogging of the passage hole is also prevented. The conveyed product is captured by the passage hole, and it is not necessary to provide a mesh in the passage hole, so that the liquid can be prevented from remaining with a high-strength structure. Further, since the liquid does not easily remain, the through hole can be formed small, and a transported object smaller than the conventional one can be captured.

The present invention, an inlet of the passage hole is formed in the protruding portion so as to face the flow direction of the liquid on the placement surface, because the fluid flows in front of the inlet of the passage hole The predetermined space is provided.
According to the present invention pass the liquid flowing through the plate board mounting surface above, the momentum of the flow by the front of the predetermined space of the inlet is increased, is formed in projection so as to face the flow direction at that state Since it reaches the inlet of the hole, it is easy to pass through the passage hole. As a result, the liquid is less likely to remain.

  Here, it is preferable that the passage hole is provided perpendicular to the plate plate. According to the present invention, the liquid flowing in from the vertical direction with respect to the plate plate can be passed efficiently. Further, by pressing in a direction perpendicular to the plate plate, the protrusion and the passage hole can be formed simultaneously. Furthermore, it is preferable that the outlet hole has a tapered shape in which the outlet is wider than the inlet. According to this invention, the clogging by the chip can be prevented, and the taper shape in which the concave portion on the back side serves as the outflow port simply by pressing the plate plate from the back side by pressing to form the protrusion and the outflow port. It is also possible to form a through hole, and the manufacture is very easy.

  It is preferable that a plurality of inflow ports are provided in each protrusion. According to the present invention, each of the protrusions is provided with a plurality of inlets. However, since the inlets can be opened in different directions by using the shape of the protrusions, the protrusions can be opened from various directions. The flowing liquid can be efficiently introduced from each inlet.

  According to the chain conveyor of the present invention, the plate plate is formed with a plurality of projections and a plurality of passage holes through which the liquid passes, so that the liquid is repelled by the projections and collected near the inlet of the passage hole. Since it passes through the passage hole, the liquid hardly remains on the plate plate. Further, since the passage hole has a larger outlet than the inlet, the passage hole is not clogged, and liquid remaining due to clogging is prevented. Therefore, the conveyed product can be collected in a state where the mixing ratio of the liquid is low, and the burden on the drive shaft due to the load of the liquid is greatly reduced. Stickiness of the surface of the plate plate due to the remaining liquid can be prevented, and collection of the conveyed product becomes easy. In particular, the protrusions that bounce the liquid have less stickiness on the surface, and the protrusions reduce the contact area with the plate plate of the conveyed object, so that the effect of preventing the adhesion of the conveyed object is very high. The Since the conveyed product is captured by the passage hole and it is not necessary to provide a mesh in the passage hole, it is possible to realize the prevention of the liquid remaining with a high-strength structure. In addition, since the coolant liquid does not easily remain as described above, the passage hole can be formed smaller than the conventional one, and even a smaller transported object can be captured without leakage.

  Further, by providing the passage hole perpendicularly to the plate plate, the liquid flowing in the direction perpendicular to the plate plate can be efficiently passed, and the liquid can be prevented from remaining. Moreover, since the projection and the passage hole can be formed simultaneously by pressing the plate plate in the thickness direction, the manufacturing is easy. In addition, by providing a plurality of inlets in each protrusion, it is possible to efficiently flow liquid flowing from various directions, and to further prevent liquid from remaining.

  In addition, an inflow port on the mounting surface side of the overhole is formed on the projection so as to face the flow direction of the liquid, and a predetermined space is provided for fluid to flow in front of the inflow port on the mounting surface side. Thus, the liquid increases the momentum of the flow in this space, and reaches the inflow port formed so as to face the flow in this state, so that the liquid easily passes through the passage hole. This makes it difficult for the liquid to remain while maintaining the structure with high strength, and it is possible to capture even small objects such as chips.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

(First embodiment)
In this embodiment, as shown in FIGS. 1 to 8, the chain conveyor of the present invention is applied to a chip conveyor that discharges chips together with a coolant from a machine tool such as a lathe or a milling machine. A plurality of plate plates P to be conveyed, side plates S1 and S1 attached to the left and right sides of the plate plates P, and a pair of left and right chains T and T to which the plate plates P are attached via the side plates S1 and S1. Yes. This type of conveyor is called a chain conveyor because chips are arranged on the left and right, and a chip conveyor because it transports chips.

  The chain T is a commercially available chain called a roller chain in which a roller Tr is interposed between a pair of link plates T1 and T2, and a pair of link plates T1 and T2 (reference numeral T1 indicates an outer link plate, and reference numeral T2 indicates an inner side. That is, the link plate T2 on the inner side of the plate plate P side is provided with a connecting collar Te projecting in an L-shaped cross section on the plate plate P side. The connecting collar Te is overlapped with the left and right ends of the plate plate P and connected by a connecting bolt B. That is, the connecting collar part Te is provided with a bolting hole Ta and a screwed part Tb on the back side, and the bolting hole Ta is formed on the left and right sides of the plate plate P. These holes are overlapped with the holes Ba and connected to these through the connecting bolts B. A roller Tr (and a bush) is interposed between the pair of link plates T1 and T2 for smooth movement of the chain T and protection of the sprocket 5, and the pair of link plates T1 and T2 and the roller Tr are pin Tp. It is connected by. The chain T having such a configuration is connected in an endless manner (endless) and hung on the sprocket 5 (FIG. 7). Thereby, as shown in FIG. 8, a transport path R in which a plurality of plate plates P are connected is formed.

  The conveyance path R has an inclined region Ra that is inclined at least partially along the conveyance path. In the inclined region Ra, the plate plate P is inclined along the transport path R. Then, the plate plate P has the exposed upper surface in FIG. 8 as a mounting surface Pe, and chips are placed on the mounting surface Pe, and the upward inclined direction toward obliquely upward or the downwardly inclined direction toward obliquely downward. Chips are conveyed to

  The plate plate P is a plate material made of iron or steel, and is provided with a plurality of protrusions 21 and a plurality of passage holes 22 through which liquid passes. 3A is a front view of the plate plate P, FIG. 3B is a rear view, and FIG. 3C is an enlarged cross-sectional view of AA ′. 4A is an enlarged front view of the protrusion 21 and the passage hole 22, and FIG. 4B is an enlarged plan view thereof.

  The protrusion 21 is for repelling coolant liquid and metal chips (chips) mixed therewith. In the present embodiment, the protrusion 21 is formed on the mounting surface Pe, but is opposite to the mounting surface Pe. It may also be formed on the back side of the plate plate P on the side. Further, the protrusion 21 of the present embodiment has a shape in which a hemispherical shape is partially cut out, and includes a curved surface 21a and a vertical surface 21b. The size may be determined as appropriate depending on the conveyed product. In the present embodiment, the height (reference a1 in FIG. 4B) is 3 mm, the width (reference a2 in FIG. 4B) is 9 mm, and the depth (FIG. 4 ( The symbol a3) of a) is 6 mm. In the inclined area Ra of the transport path R (FIG. 8), since the plate plate P is tilted along the transport path R, the liquid flows in the flow direction D on the mounting surface Pe (an arrow D in FIGS. 2 and 10). The vertical surface 21b is formed to be a surface facing the flow direction D. In the present embodiment, the protrusions 21 are formed in a staggered arrangement in two rows in the width direction of the transport path R, but may be one row or a plurality of rows, and is not limited thereto. The protrusion 21 is preferably as small as possible in order to repel the coolant or metal tip.

The passage hole 22 is formed so that the inside of the protrusion 21 is hollow, and the inflow port 22a is provided on the mounting surface Pe side of the plate plate P, and the outflow port 22b is provided on the back surface Pf side. The outflow port 22 b is wider than the inflow port 22 a, and the inflow port 22 a is the narrowest in the passage hole 22. In this embodiment, both the inflow port 22a and the outflow port 22b have a substantially semicircular shape composed of a straight line and an arc, and the inflow port 22a has a width (reference numeral b1 in FIG. 4A) of 5 mm and a height (FIG. 4B). ) B2) 1 mm, and the outlet 22b has a width (symbol b1 in FIG. 4A) 5 mm and a depth (symbol b3 in FIG. 4A) 4 mm, but is not limited thereto.
The through hole 22 is formed by using the protruding portion 21 having the curved surface shape or the like, and is formed so that an angle is formed unlike the conventional through hole penetrating in the plate thickness direction to the back surface Pf. . When the plate plate P is penetrated in the plate thickness direction, the device structure is not such that the coolant liquid flows (the surface tension of the coolant solution works most in the plate plate thickness direction), but the protrusion 21 is used. Thus, the direction of the passage hole 22 can be directed in a predetermined direction, and the coolant liquid can be easily passed using the flow of the coolant liquid.

In the present embodiment, the inlet 22 a of the passage hole 22 is formed so as to oppose the liquid flow direction D, and specifically, provided on the vertical surface 21 b of the protrusion 21. Therefore, the metal chip adhering to the plate plate P does not enter the inflow port 22a from above and is repelled by the protrusion 21. That is, only a very small metal chip can enter the inflow port 22a provided on the vertical surface 21b of the protrusion 21.
In addition, a space 23 through which fluid flows is formed in front of the inflow port 22a. The space 23 is planar, and is widely secured in the liquid flow direction D by arranging the protrusions 21 in a staggered manner.

  The protrusion 21 and the passage hole 22 may have other shapes, such as a polyhedral shape, a conical shape, a polygonal pyramid shape, or other shapes. For example, the protrusion 21 has a cubic shape (FIG. 5A), a polygonal shape (FIG. 5B), a semi-elliptical sphere shape (FIG. 5C), a semi-conical shape (FIG. 5D). )), And the passage hole 22 may be formed by hollowing the inside.

  The protrusion 21 and the passage hole 22 may be formed by injection molding, but are preferably formed by pressing. First, a notch for the passage hole 22 is formed in a die-cut iron or steel plate material, and then the protrusion 21 is formed by press working. At the same time as the projection 21 is formed by pressing, an incision is opened to form the inlet 22a and the back Pf side is concave to form the outlet 22c. The passage holes 22 can be formed simultaneously. Further, by simply adjusting the notch for the passage hole 22 and the size of the projection 21, the passage hole 22 having the narrowest inlet 22 a can be formed. However, it is also possible to form the passage hole 22 after the projection 21 is formed.

  This plate plate P has a convex portion in which one end portion in the connecting direction of the plate plate P is formed with a concave portion Pa having a circular cross section (an arc shape close to a semicircle) and the other end portion in the connecting direction is bent vertically. Pb is formed, and a flat portion Pc is formed between the concave portion Pa and the convex portion Pb.

  The concave portion Pa having an arcuate cross section is formed so as to form a part of a regular semicircle, and the tip (one end) thereof is a plate plate P (positioned in the direction of the arrow in FIG. 1) An opening (gap) Pd is formed between the flat portion Pc of P1) (FIG. 2). Due to the opening Pd, the arc-shaped recess Pa is formed in an arc shape of about 120 degrees. The bent portion formed by bending the other side end portion as a vertical convex portion is aligned with the position of the pin Tp of the chain T (FIG. 7), and this position is the center of the arc-shaped concave portion Pa. It is also possible for the center of the bent portion and the arc-shaped concave portion Pa to be on an extension line of the flat portion Pc. Further, it is preferable that the tip of the convex portion Pb does not contact the inner surface of the concave portion Pa in order to obtain a rotation state at the corner portion. In addition, when rotating the chain conveyor while flowing a predetermined amount of coolant liquid, it is preferable that the tip of the convex portion Pb does not contact the inner surface of the concave portion Pa in order to ensure the flow of the coolant liquid. However, for reliable discharge of chips and metal powder, contact (contact) may be performed. In the present embodiment, the protrusion 21 and the passage hole 22 are formed only in the flat portion Pc and not in the concave portion Pa or the convex portion Pb, but this is because the coolant stays in the flat portion Pc, This is because it does not stay in the concave portion Pa or the convex portion Pb.

  Further, another through hole 7 is formed in the vicinity of the corner with the flat portion Pc in the convex portion Pb. The other passage holes 7 are formed so as to face the liquid flow direction D in the same manner as the inflow port 22a of the passage hole 22, so that the coolant liquid can pass therethrough. The other passage holes 7 may be formed in the vicinity of the boundary between the flat portion Pc and the convex portion Pb, but by forming the convex portion Pb so as to face the flow direction D, the coolant liquid can easily flow in. Therefore, it is preferable.

  The side plates S1 and S2 are arranged between the chain T and the plate plate P for preventing chips (chips) and coolant from leaking sideways, that is, discharging to the chain T side. The side plates S1 and S2 are formed higher than the link plates T1 and T2 of the chain T, and a step portion is formed in the center of the side plates S1 and S2. Side plates S2 are overlaid. Here, in the overlapping portion S, an arbitrary one side plate S1 positioned in the transport direction of the chain conveyor is arranged on the plate plate P side (inside), and the next side plate S2 is on the chain T side (outside). ). This is to prevent the chip powder from entering the gap between the overlapping portions S. In addition, a pin hole Sb is formed at one side of the overlapped center so that the protruding tip of the pin Tp passes through and the gap is not generated. Further, on the lower side of the side plates S1 and S2, a fitting groove 8a is formed in which a chain connecting collar Te is fitted. The fitting groove 8a is formed by notching from the lower ends of the side plates S1 and S2, and the notch 8b having a narrow width and the fitting groove 8a having a wider width are formed in a substantially T shape. . The narrow notch 8b and the wide fitting groove 8a allow the side plate S1 and S2 to be fitted into the fitting groove 8a even when the plate plate P is replaced or attached. Ingenuity has been made. Since the side plates S1 and S2 having such a configuration do not have an L-shaped flange as in the conventional case, the processing is easy. Further, the fitting grooves 8a and the notches 8b of the side plates S1 and S2 can be formed simultaneously when the side plates S1 and S2 are formed by press punching or the like.

  When assembling the chain conveyor of this embodiment, as shown in FIG. 1, the chain T is assembled together with a chain (roller chain) T in which a roller Tr is interposed between a pair of link plates T1 and T2. And the side plates S1 and S2. That is, since the chain T and the side plates S1 and S2 are connected only by fitting the connecting collar Te of the chain T into the fitting grooves 8a of the side plates S1 and S2, as in the prior art. There is no need to bolt. Note that the position of the threaded portion Tb protruding below the flange portion Te of the chain T passes through the notch 8b. When replacing or attaching the plate plate P, the side plates S1 and S2 may be inclined, but in addition to the wide width fitting groove 8a, a narrow width notch 8b is also formed. It is also possible to engage with the fitting groove 8a obliquely from below.

  After the side plates S1, S2 and the chain T are connected, the plate plate P is sequentially bolted from above. That is, the left and right sides of the plate plate P are overlapped with the collar portion Te of the chain T and are connected to the bolt fastening holes Ba and Ta through the connection bolt B. Then, when the plate plates P are connected to each other by the connection bolt B, the convex portion Pb of any one plate plate P1 positioned in the transport direction is placed in the concave portion Pa of the next plate plate P2. It is done.

  The chain conveyor assembled in this way is stretched between the drive shaft 11a and the driven shaft 11b (FIG. 7). A sprocket 5 is arranged on the drive shaft 11a and the driven shaft 11b, and an endless chain T is stretched over the sprocket, for example, by a lathe or a metal working machine tool as shown in FIG. It becomes the chip conveyance conveyor 1 which conveys the cut | disconnected chip | tip.

When the above-mentioned chain conveyor 1 is used to transport chips (chips) actually cut by a lathe, a metal working machine tool or the like in an upwardly inclined direction (FIG. 8), the coolant liquid is mixed. The chips are mounted on the mounting surface Pe of the plate plate P and conveyed, but the coolant liquid is repelled by the protrusions 21 (the metal chip is also repelled) and collected near the inflow port 22a to pass through the holes. Pass through 22. Accordingly, it is difficult for the coolant liquid to remain on the plate plate P, and chips can be collected with a low mixing ratio of the coolant liquid, and the burden on the drive shaft 11a due to the load of the coolant liquid is greatly reduced. The Stickiness due to the remaining coolant liquid is reduced, and chip recovery is facilitated. Since the outlet 22b of the passage hole 22 is formed wider than the inlet 22a, even if the chip flows into the passage hole 22, it passes without being caught on the way, and the coolant liquid remains due to clogging of the passage hole 22. Is prevented. That is, only a small metal tip passes through the passage hole 22, but the clogging does not occur in the overhole 22 because the outlet 22b is formed wider than the inlet 22a.
And the protrusion part 21 which bounced the liquid has little stickiness of the surface, and also the contact area between the object to be conveyed and the plate plate P is reduced by the protrusion part 21, and the adhesion prevention effect of the object to be conveyed is high. It is easy to collect things. It is not necessary to have a structure in which a mesh is formed in a large passage hole in order to give priority to the passage of the coolant liquid, and the passage hole 22 having a size capable of capturing a conveyed product is formed, and is discharged from a lathe. There will be no damage caused by large chips.

  Further, since the plate plate P is inclined in the inclined region Ra, the coolant liquid flows in the downward inclined direction (that is, the liquid flow direction D), but the coolant liquid that has flowed flows into the inlet of the passage hole 22. The space 23 formed in front of 22a increases the momentum of the flow and reaches the inlet 22a. Since the inflow port 22a is formed so as to face the flow direction D, the coolant liquid flows into the inflow port 22a with the flow force and passes through the passage hole 22. In the present embodiment, the protrusions 21 are staggered and the space 23 is widely secured, which is very effective because the flow momentum is further increased.

  Furthermore, since another passage hole 7 is formed in the vicinity of the flat portion Pc of the convex portion Pb, the coolant liquid that has not passed through the passage hole 22 reaches the convex portion Pb and passes through the other passage hole 7. Since the other passage hole 7 is formed in the convex portion Pb so as to face the flow direction D, the coolant liquid easily flows in, and the liquid does not easily remain through the other passage hole 7.

Conventionally, when a conveyed product is captured by a passage hole without providing a mesh, it is necessary to make the diameter of the passage hole about 10 mm in order to obtain an effect. There were not a lot of transported items. In the present embodiment, since the coolant liquid does not easily remain as described above, the passage hole can be formed smaller than the conventional one, and even a smaller transported object can be captured without leakage. .
Further, since the direction of the outlet 22b and the inlet 22a of the passage hole 22 are different from each other and the inlet 22a is not provided perpendicular to the mounting surface Pe as in the prior art, chips that fall in the vertical direction. Does not allow any small chips to pass through. In addition, the chips that fall in such a vertical direction, when there is no coolant liquid (the position where the coolant liquid runs out through the passage hole 22 or above the inclined area Ra inclined obliquely above the plate plate P). Therefore, by the action of the projecting portions 21 having a plurality of curved surfaces, etc., it is conveyed in a state where it can be easily detached, and chips are dropped so as to match the rotation direction of the following folding rotation (corner rotation).

  When the chain conveyor rotates at the corner of the drive shaft 11a or the driven shaft 11b (see the arrow D in FIG. 7), the convex portion Pb of the preceding plate plate P1 follows the corner rotation. It rotates in the direction of rotation. Since the centering structure in which the position of the pin Tp of the chain T coincides with the center of the concave portion Pa and the center of rotation of the bent portion of the convex portion Pb, the convex portion Pb is accurately positioned at the central position of the concave portion Pa. Rotate. When the convex portion Pb of the plate plate P1 rotates, the tip of the convex portion Pb rotates toward the opening Pd in the concave portion Pa of the next plate plate P2 (not reaching the corner rotation position). Therefore, even if a metal chip or coolant enters the recess Pa, the protrusion Pb is scraped out along the inner periphery of the arc-shaped recess Pa.

(Second Embodiment)
Fig.9 (a) is a perspective view which shows the plate plate P of the chain conveyor of this Embodiment, FIG.9 (b) is an expanded sectional view which expanded a part of BB '. The description of the same parts as those in the above embodiment is omitted. This plate plate P is suitable mainly for a chain conveyor in which the transport path R is flat and the liquid does not flow. A hemispherical projection 21 is formed on the plate plate P, and the passage hole 22 is formed in a planar region. The passage hole 22 is tapered (conical), and the outlet 22b is wider than the inlet 22a.

  When chips mixed with the coolant are placed on the chain conveyor using the plate plate P, the coolant is bounced by the projections 21 and collected at the inlet 22a and passes through the passage hole 22. Since the passage hole 22 is formed in a tapered shape and the inflow port 22a is the narrowest, it does not become clogged even if chips flow in. Since small holes are formed in the plate plate P to form the passage holes 22, the strength is high, and the liquid can be prevented from remaining with a high-strength structure.

(Third embodiment)
FIG. 10 is a perspective view showing a plate plate P3 of the chain conveyor according to the present embodiment, FIG. 11A is a top view of the plate plate P3, and FIG. 10B is a cross-sectional view taken along line EE ′. . The description of the same parts as those in the above embodiment is omitted. On the mounting surface Pe of the plate plate P3, protrusions 31 having a circular cross section in the horizontal direction and a substantially trapezoidal cross section in the vertical direction are formed in a plurality of rows and columns. 32 is formed. The passage hole 32 is formed perpendicular to the plate plate P3. Thereby, the liquid flowing in from the vertical direction can be passed efficiently. The shape of the passage hole 32 is tapered (substantially conical) in cross section, and the outflow port 32b is wider than the inflow port 32a. It is possible to form the tapered passage hole 32 in which the concave portion on the back side becomes the outflow port 42b only by forming the projection 31 and the inflow port 32a by pressing from the back side of the plate plate P3. It is very easy.

(Fourth embodiment)
FIG. 12 is a perspective view showing a plate plate P4 of the chain conveyor of the present embodiment, FIG. 13 (a) is a top view of the plate plate P4, and FIG. 12 (b) is a cross-sectional view of FF ′. On the mounting surface Pe of the plate plate P4, substantially hemispherical projections 41 are formed in a plurality of rows and columns, and a passage hole 42 is formed in each projection 41. The passage hole 42 includes a plurality of inflow ports 42a. For example, in the present embodiment, in the flow direction of the fluid (arrow D in FIG. 12), there are provided two inflow ports, a front-side inflow port 42a1 and a rear-side inflow port 42a2. And it leads to one outflow port 42b. Since the fluid flows in from the plurality of inlets 42a1 and 42a2, the fluid can efficiently flow into the passage hole 42. In particular, by providing the inlet 42a2 on the side where the liquid tends to stay, for example, on the rear side, the liquid that has flowed rearward without flowing into the front inlet 42a1 can be introduced from the inlet 42a2. In this case, in order to assist inflow from the rear inflow port 42a2, the inclination direction of the plate plate P may be temporarily reversed in the transport path R.

(Fifth embodiment)
FIG. 14 is a perspective view showing a plate plate P5 of the chain conveyor of the present embodiment, FIG. 15 is a top view of the plate P5, and FIG. 14B is a cross-sectional view of GG ′. The description of the same parts as those in the above embodiment is omitted. The substantially hemispherical projection 51 of the mounting surface Pe of the plate plate P is provided with a front inlet 52a1, a rear inlet 52a2, and an inlet 52a3 at the top of the protrusion in the fluid flow direction D. Yes. Thereby, the fluid which flows from various directions flows in efficiently from each inflow port 52a1-52a3.

  The formation position, shape, and number of the inflow ports 52a are not limited thereto, and may be provided on the left and right sides of the substantially hemispherical projection 51, for example. Thereby, the liquid which flowed right and left without flowing in from the front inflow port can be made to flow in from the left and right inflow ports. Further, the through holes may be provided only on the front side and the left and right sides. According to this, the liquid flowing in from the inlet flows rearward along the inclination direction of the plate plate or the flow direction of the liquid, but since the inlet is not provided in the rear, the liquid flowing in the rear flows. There is no risk of backflow from the entrance. Also, as shown in FIGS. 16 (a) and 16 (b), the protrusion 51 is a polyhedron such as a quadrangular pyramid or a cube, and inlets 52a, 52a are provided on each surface to increase the number of inlets and increase the number of openings. The direction may be multi-directional so that liquid flowing from various directions can be easily introduced.

(Sixth embodiment)
FIG. 17 is an explanatory diagram for explaining a protrusion of the chain conveyor according to the present embodiment. The plate plate P is provided with a combination of protrusions 611 and 612 having different heights. Note that the shape of the protrusion and the passage hole is substantially the same as in the third embodiment. Thus, even if the chip is placed on the high protrusion 611 and the inflow port 621a is blocked, the liquid flows in from the inflow port 622a of the low height protrusion 612. The shape of the protrusion is not limited to this, and for example, the height of the protrusion 51 of the fifth embodiment may be different.

  In each of the above embodiments, the plate plate P in which the concave portion Pa and the convex portion Pb are formed in the connecting portion between the plates has been described as an example. However, the present invention is not limited to this. It is applicable to what is connected and what is connected by what kind of structure. In each of the above embodiments, the case where the coolant liquid is mixed into the chips from a machine tool such as a lathe or a milling machine has been described as an example. The invention can be widely applied when a liquid is mixed in a solid transported object.

It is a disassembled perspective view which shows the chain conveyor of the 1st Embodiment of this invention. It is a perspective view which shows the plate plate of the said 1st Embodiment, (a) is a perspective view of one plate plate, (b) is a perspective view of the state which connected the plate plate. (A) is the front view of the said 1st Embodiment, (b) is the back view, (c) is the AA 'sectional drawing. (A) is an enlarged front view of the projection part and passage hole of the said 1st Embodiment, (b) is an enlarged plan view. It is a perspective view which shows the other example of a projection part and a passage hole. It is a top view which shows the chain and side plate of the said 1st Embodiment. It is a side view explaining the rotation state in the corner part of the said 1st Embodiment. It is a perspective view which shows the chain conveyor for a metal chip | tip and scrap conveyance. (A) is a perspective view which shows the plate plate of the 2nd Embodiment of this invention, (b) is the expanded sectional view which expanded a part of BB '. It is a perspective view which shows the plate plate of the chain conveyor of the 3rd Embodiment of this invention. (A) is a top view of the plate board of the said embodiment, (b) is sectional drawing of EE '. It is a perspective view which shows the plate plate of the chain conveyor of the 4th Embodiment of this invention. (A) is a top view of the plate board of the said embodiment, (b) is sectional drawing of FF '. It is a perspective view which shows the plate plate of the chain conveyor of the 5th Embodiment of this invention. (A) is a top view of the plate board of the said embodiment, (b) is sectional drawing of GG '. It is explanatory drawing explaining the other example of the said 5th Embodiment. It is explanatory drawing explaining the projection part of the chain conveyor of the 6th Embodiment of this invention.

Explanation of symbols

1 Chain conveyor (chip conveyor),
21, 31, 41, 51, 611, 612 protrusion,
22, 32 passage holes,
22a, 32a, 42a, 52a, 621a, 622a Inlet of passage hole,
22b, 32b, 42b, 52b Outlet of passage hole,
23 Space in front of the passage hole,
P, P1, P2, P3, P4, P5 plate plate,
Pe plate plate mounting surface,
The back of the Pf plate,
T chain,

Claims (3)

In a chain conveyor including a plurality of plate plates having a placement surface on which a conveyed product is placed and a chain to which the plate plates are attached, the plate plate has a plurality of protrusions and a plurality of liquids to pass through. passing hole is provided in said passage hole is the mounting surface side inlet of the plate board, the back side of the plate plates has a flow outlet, the inlet of said passage holes, a plurality of the protrusions A chain conveyor characterized by being formed into. Inlet of the passage hole is formed in the protruding portion so as to face the flow direction of the liquid on the placement surface, a predetermined space for the fluid flows in front of the inlet of the passage hole The chain conveyor according to claim 1 , wherein the chain conveyor is provided. According to claim 1 or 2, wherein the chain conveyor, characterized in that it is wider in the outlet of the passage hole than the inlet of the passage hole.

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