JP6647044B2 - Chip conveyor - Google Patents

Description

  The present invention generally relates to a chip conveyor, and more particularly, to a chip conveyor that conveys chips generated from a machine tool.

  Regarding the conventional chip conveyor, for example, Japanese Utility Model Publication No. 4-84222 discloses a chip conveyor which aims to sufficiently clean the base of the hinge pin and reduce deformation of the tip of the brush by the hinge pin. A cleaning device for a hinge portion is disclosed (Patent Document 1). The device for cleaning the hinge portion of the chip conveyor disclosed in Patent Document 1 is disposed at an angle of θ with respect to the belt movement direction, and relatively moves in the width direction of the chip conveyor at a movement speed equal to the movement speed of the chip conveyor. Equipped with a roller brush.

Japanese Utility Model Publication No. 4-84222

  2. Description of the Related Art Various types of chip conveyors are known as devices for transporting chips generated by a machine tool. One type of this chip conveyor is one that uses a scraper to scrape chips from a chip receiving position to a chip discharging position. However, in such a type of chip conveyor, there is a problem that the chips attached to the surface of the scraper are not properly discharged at the discharge position, and the scraper brings back some of the chips.

  Therefore, an object of the present invention is to solve the above-described problems, and to provide a chip conveyor that prevents chips from being brought back by a scraping plate.

A chip conveyor according to one aspect of the present invention includes a guide plate for guiding chips, and a scraping plate that moves while slidingly contacting the guide plate and transports chips on the guide plate. The scraper has a first surface facing the side in the direction of movement and a second surface located behind the first surface. The chip conveyor is provided on a movement path of the scraper, operates to rub the first surface while receiving a force from the moving scraper, and cleans the scraper by a first cleaning unit. A second cleaning unit that is moved from the first surface side to the second surface side by receiving a force from the moving scraping plate, operates to rub the second surface, and cleans the scraping plate. . The first cleaning unit and the second cleaning unit are provided side by side in the moving direction of the scraper.
A chip conveyor according to another aspect of the present invention includes a guide plate for guiding chips, and a scraper plate that moves while slidingly contacting the guide plate and transports chips on the guide plate. The scraper has a first surface facing the side in the direction of movement and a second surface located behind the first surface. The chip conveyor is provided on a movement path of the scraper, operates to rub the first surface while receiving a force from the moving scraper, and cleans the scraper by a first cleaning unit. And a second cleaning unit that operates to rub the second surface while receiving a force from the moving scraping plate and cleans the scraping plate.

  According to the chip conveyor configured as described above, the first cleaning unit and the second cleaning unit operate to rub the first surface and the second surface of the scraping plate with the movement of the scraping plate, respectively. Chips can be removed from the scraper. Thereby, it is possible to prevent the scraps from being brought back by the scraper.

  Preferably, a through hole is formed in the scraping plate so as to penetrate from the first surface to the second surface.

  According to the chip conveyor configured as described above, chips can be removed from the scraper even if the chips are caught in the through holes.

  Also preferably, the first cleaning unit and the second cleaning unit are provided side by side in the moving direction of the scraper. The first cleaning unit is disposed upstream of the second cleaning unit in the moving direction of the scraper.

  According to the chip conveyor configured as described above, the first cleaning unit and the second cleaning unit operate to sequentially rub the first surface and the second surface of the scraping plate with the movement of the scraping plate. The chips can be removed from the scraper.

  Preferably, the first cleaning unit and the second cleaning unit have a weight. The first cleaning unit and the second cleaning unit are in a first state in which each cleaning unit waits for the scraping plate and a second state in which the cleaning of the scraping plate is completed, based on the force received from the moving scraping plate and the weight of the weight unit. Rocks between.

  According to the chip conveyor configured as described above, the first cleaning unit and the second cleaning unit can be swung between the first state and the second state with a simple configuration.

  Preferably, the chip conveyor further includes a cover body having a chip discharge port and configured to discharge chips transported by the scraper through the chip discharge port. The first cleaning unit and the second cleaning unit are provided above the chip discharge port.

  According to the chip conveyor configured as described above, the chips removed from the scraper by the first cleaning unit and the second cleaning unit can be discharged to the outside of the cover body through the chip discharge port.

  Also preferably, the chip conveyor has a chip discharge port, and through the chip discharge port, a cover body configured to be able to discharge chips conveyed by the scraper and a scraper are connected, and the chip is scraped by rotating. It further includes an endless chain that moves the plate around, and a sprocket that is provided above the chip discharge port and that changes the moving direction of the scraping plate by hanging the endless chain. The guide plate has an end for discharging chips toward the chip discharge port. The end portion is provided on the upstream side of a position where the moving direction of the scraping plate is changed by the sprocket in the moving direction of the scraping plate.

  According to the chip conveyor configured as described above, chips conveyed on the guide plate can be more efficiently discharged at the end of the guide plate.

  Preferably, the first cleaning unit and the second cleaning unit are provided between the end and the chip discharge port in the vertical direction. The end is provided between the first cleaning unit and the second cleaning unit in the horizontal direction.

  According to the chip conveyor configured as described above, the falling direction of the chips discharged from the end of the guide plate can be regulated by the first cleaning unit and the second cleaning unit. Thus, the chips can be more reliably directed to the chip discharge port.

  As described above, according to the present invention, it is possible to provide a chip conveyor that prevents chips from being brought back by a scraping plate.

It is sectional drawing which shows the chip conveyor in embodiment of this invention. FIG. 2 is a perspective view showing a scraping plate in FIG. 1. It is another perspective view which shows the scraping board in FIG. FIG. 4 is a cross-sectional view showing the scraper along the line IV-IV in FIG. 2. It is a perspective view which shows the cleaning mechanism of the scraper in FIG. FIG. 6 is an enlarged view of a range surrounded by a two-dot chain line VI in FIG. 1. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a first cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a diagram illustrating a cleaning operation of a scraper by a second cleaning unit in FIG. 5. FIG. 6 is a cross-sectional view illustrating a state of a scraping plate cleaned by a first cleaning unit and a second cleaning unit in FIG. 5. FIG. 2 is a cross-sectional view illustrating a positional relationship between an end of a guide plate and a first cleaning unit and a second cleaning unit in the chip conveyor in FIG. 1.

  An embodiment of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members have the same reference characters allotted.

  FIG. 1 is a sectional view showing a chip conveyor according to an embodiment of the present invention. Referring to FIG. 1, a chip conveyor 10 according to an embodiment of the present invention is an apparatus for transporting chips of a work generated by a machine tool.

  First, the overall structure of the chip conveyor 10 will be described. The chip conveyor 10 has a cover body 51. The cover body 51 has the appearance of the chip conveyor 10. The cover body 51 has a housing shape that forms a space inside.

  The cover body 51 has a horizontal portion 56 and a rising portion 57. The cover body 51 has a shape that is bent between the horizontal portion 56 and the rising portion 57 as a whole. The horizontal portion 56 is placed on the installation surface of the chip conveyor 10, and extends in the horizontal direction. The rising portion 57 rises from one end of the horizontal portion 56 extending in the horizontal direction, and extends diagonally upward.

  The cover body 51 further has a chip receiving port 52 and a chip discharging port 53. The chip receiving port 52 is provided at the other end of the horizontal portion 56 opposite to the one end connected to the rising portion 57. The chip receiving port 52 is formed by an opening of the cover body 51 that opens vertically upward. The chip discharge port 53 is provided at the end of the rising portion 57 that extends obliquely upward. The chip discharge port 53 is formed by an opening of the cover body 51 that opens vertically downward.

  When the chip conveyor 10 is installed on the machine tool, the chip receiving port 52 is positioned below the machining area of the machine tool. A chip bucket for collecting chips is arranged below the chip discharge port 53. Chips of the work discharged from the processing area of the machine tool are received in the cover body 51 through the chip receiving port 52. The chips are transported inside the cover body 51 by a transport mechanism described subsequently, and are collected in the chip bucket through the chip discharge port 53.

  The chip conveyor 10 further includes a pair of endless chains 31, a driving sprocket 61, and a driven sprocket 62. The pair of endless chains 31, the drive sprocket 61 and the driven sprocket 62 are accommodated in a cover body 51.

  The drive sprocket 61 is provided at an end of the rising portion 57 that extends obliquely upward. The drive sprocket 61 is arranged above the chip discharge port 53. The driving sprocket 61 is rotatably supported about an axis extending in a direction perpendicular to the paper surface of FIG. 1 (hereinafter, this direction is also referred to as the “width direction of the chip conveyor 10”). The drive sprocket 61 is driven to rotate by transmission of power from a motor (not shown).

  The driven sprocket 62 is provided at a bent portion between the horizontal portion 56 and the rising portion 57. The driven sprocket 62 is supported rotatably about an axis extending in the width direction of the chip conveyor 10. The driven sprocket 62 has a hollow shape, and a filter 63 for a coolant is provided inside the driven sprocket 62. The filter 63 has a cylindrical shape, and forms an internal space 64 inside.

  The pair of endless chains 31 are arranged in parallel in the width direction of the chip conveyor 10 at a distance. The endless chain 31 is arranged in a ring shape inside the cover body 51 between the horizontal portion 56 and the rising portion 57. The endless chain 31 is arranged inside the cover body 51 so as to reciprocate between a position facing the chip receiving port 52 and a position facing the chip discharging port 53.

  The endless chain 31 is wound around a driving sprocket 61 and a driven sprocket 62 on a route routed in the cover body 51 and is guided by a plurality of guide members. When the chips are conveyed, the endless chain 31 rotates in the direction shown by the arrow 101 (the hatched arrow) as the driving sprocket 61 rotates.

  The traveling direction of the endless chain 31 is reversed by the guide member at the other end side of the horizontal portion 56 (reversal position 91 shown in FIG. 1). The traveling direction of the endless chain 31 is reversed by the drive sprocket 61 at the end (reversal position 92 shown in FIG. 1) of the rising portion 57 that extends obliquely upward. The reversing position 91 and the reversing position 92 are located at both ends of the path on which the endless chain 31 is routed.

  With the reversing position 91 and the reversing position 92 as the start point and the end point, respectively, a path from the position where the endless chain 31 (the guide plate 41 described later) faces the chip receiving port 52 to the position facing the chip discharging port 53 is called an outward path, A path in which the endless chain 31 (a guide plate 41 described later) returns from a position facing the chip discharge port 53 to a position facing the chip receiving port 52 with the reverse position 92 and the reverse position 91 as a start point and an end point, respectively, is called a return path. The endless chain 31 is routed such that the outward path is located vertically above the return path.

  The endless chain 31 traveling on the backward path is wound around the driven sprocket 62. In the horizontal portion 56, the endless chain 31 traveling on the outward path and the endless chain 31 traveling on the return path are parallel to each other.

  The chip conveyor 10 further has a guide plate (inner pan) 41 and a plurality of scraping plates 21. The guide plate 41 and the plurality of scraping plates 21 are housed in a cover body 51. The chip conveyor 10 is a scraper type including a guide plate (inner pan) 41.

  The guide plate 41 is a plate member that guides chips from a position facing the chip receiving port 52 to a position facing the chip discharging port 53 inside the cover body 51. The scraping plate 21 is a plate member that conveys chips on the guide plate 41 by moving while sliding on the guide plate 41.

  The guide plate 41 is disposed inside the endless chain 31 that is arranged in a ring. The guide plate 41 has an end portion 42 arranged on the other end side of the horizontal portion 56 and an end portion 43 arranged on the end side of the rising portion 57 which extends obliquely upward. The guide plate 41 extends in a plate shape between the end 42 and the end 43. The guide plate 41 is fixed to the inner surface of the cover body 51 at both ends in a direction (width direction of the chip conveyor 10) orthogonal to a direction in which the guide plate 41 extends in a plate shape.

  The guide plate 41 is provided in the horizontal portion 56 along the endless chain 31 that travels on the outward path and the return path. The guide plate 41 is provided at the rising portion 57 along the endless chain 31 traveling on the outward path. At the bent portion between the horizontal portion 56 and the rising portion 57, the guide plate 41 is disposed between the endless chain 31 traveling on the outward path and the driven sprocket 62, and the guide plate 41 is connected to the endless chain 31 traveling on the return path. The driven sprocket 62 is interposed between them.

  The shape of the guide plate is not limited to the above, but may be changed as appropriate depending on the positional relationship between the chip receiving port and the chip discharging port, the moving path of the scraping plate, and the like.

  The scraping plate 21 is fixed to the endless chain 31. The scraping plate 21 extends between the pair of endless chains 31 in a plate-like manner in the width direction of the chip conveyor 10 while being in contact with the guide plate 41. The plurality of scraping plates 21 are spaced apart from each other in a direction in which the endless chain 31 extends in a ring shape.

  With the rotation of the endless chain 31, the scraping plate 21 moves in the direction shown by the arrow 101 while slidingly contacting the guide plate 41. The scraping plate 21 comes into sliding contact with the guide plate 41 from the end 42 to the end 43 while moving on the outward path. The scraping plate 21 comes into sliding contact with the guide plate 41 at the horizontal portion 56 while moving on the return path.

  FIG. 2 is a perspective view showing the scraping plate in FIG. FIG. 3 is another perspective view showing the scraping plate in FIG. FIG. 4 is a sectional view showing the scraper along the line IV-IV in FIG.

  Referring to FIGS. 1 to 4, scraping plate 21 has a first surface 21a and a second surface 21b. The first surface 21a and the second surface 21b are arranged on the front and back of the scraper 21 having a plate shape.

  The first surface 21a is arranged on the side of the scraping plate 21 in the traveling direction. The second surface 21b is arranged on the back side of the first surface 21a and on the side opposite to the direction in which the scraper 21 advances. When the scraper 21 moves on the outward path, the first surface 21a faces the reversing position 92, and the second surface 21b faces the reversing position 91. When the scraper 21 moves on the return path, the first surface 21a faces the reversal position 91 and the second surface 21b faces the reversal position 92.

  The scraping plate 21 has a substantially L-shaped bent shape as a whole. More specifically, the scraping plate 21 has a first edge 22 and a second edge 23 as its constituent parts, and is bent between the first edge 22 and the second edge 23. It has the shape. The scraping plate 21 moves in such a manner that the end of the first end 22 slides against the guide plate 41 and the second end 23 rises from the guide plate 41.

  A plurality of through holes 26 are formed in the scraping plate 21. The through hole 26 is provided so as to penetrate from the first surface 21a to the second surface 21b. Each through hole 26 has a slit shape. The plurality of through holes 26 are provided side by side in the width direction of the chip conveyor 10. The plurality of through holes 26 are formed in the same manner in each of the second end 23 and the first end 22.

  The shape of the scraping plate is not particularly limited as long as the chips on the guide plate can be transported. The shape and number of the through holes formed in the scraping plate are not particularly limited as long as the coolant can flow.

  Chips received in the cover body 51 through the chip receiving port 52 ride on the guide plate 41 immediately below the chip receiving port 52. The scraps on the guide plate 41 are transported by the scraping plate 21 traveling on the outward path while sliding on the guide plate 41. When the scraping plate 21 reaches the end 43 of the guide plate 41, the chips are discharged from above the guide plate 41 and discharged out of the cover body 51 through the chip discharge port 53.

  In addition, a coolant (cutting oil) used for machining the workpiece is discharged from the machine tool in addition to the chips. In the present embodiment, the through holes 26 are formed in the scraping plate 21 to prevent the coolant from being discharged together with the chips through the chip discharge port 53. With such a configuration, the coolant received in the cover body 51 through the chip receiving port 52 is not conveyed by the scraper 21 and is guided as shown by an arrow 102 (open arrow) in FIG. It goes to the space 47 between the plate 41 and the bottom plate of the cover body 51. After the coolant is filtered by the filter 63 in the driven sprocket 62, the coolant is discharged from the internal space 64 to a coolant tank (not shown).

  Next, the cleaning mechanism of the scraper 21 will be described in detail. FIG. 5 is a perspective view showing a cleaning mechanism of the scraping plate in FIG. FIG. 6 is an enlarged view of a range surrounded by a two-dot chain line VI in FIG. In FIG. 6, the state of the moving scraping plate 21 is continuously shown.

  Referring to FIGS. 1, 5 and 6, chip conveyor 10 further has a first cleaning unit 71 and a second cleaning unit 76. The first cleaning unit 71 and the second cleaning unit 76 are provided as cleaning means for removing chips attached to the scraper 21.

  The first cleaning unit 71 and the second cleaning unit 76 are provided on a movement path of the scraper 21. The first cleaning unit 71 and the second cleaning unit 76 are provided side by side in the moving direction of the scraper 21. The first cleaning unit 71 is arranged upstream of the second cleaning unit 76 in the moving direction of the scraper 21.

  The first cleaning unit 71 and the second cleaning unit 76 are provided at the end of the rising portion 57 that extends obliquely upward. The first cleaning unit 71 and the second cleaning unit 76 are provided on the return path of the scraping plate 21. The first cleaning unit 71 and the second cleaning unit 76 are provided above the chip discharge port 53.

  First, the first cleaning unit 71 will be described. The first cleaning unit 71 has a shaft part 72, a plate-shaped part 73, and a weight part 74 as its constituent parts. The shaft portion 72 extends axially along the width direction of the chip conveyor 10. The shaft portion 72 is provided vertically below the moving scraping plate 21. The first cleaning unit 71 is provided so as to be rotatable about a shaft 72.

  The plate portion 73 has a shape extending in a plate shape from the shaft portion 72. The plate-shaped portion 73 extends vertically upward and vertically downward from the shaft portion 72. The plate-shaped portion 73 has a tip portion 73j at a tip extending vertically upward. The weight portion 74 is provided at a tip end where the plate portion 73 extends vertically downward from the shaft portion 72.

  The first cleaning unit 71 operates to rub the first surface 21a of the scraping plate 21 while receiving a force from the moving scraping plate 21. More specifically, the first cleaning unit 71 waits for the scraping plate 21 based on the force received from the moving scraping plate 21 and the weight of the weight unit 74 (the first cleaning unit 71X shown in FIG. 6). ) And a second state in which cleaning of the scraper 21 is completed (a first cleaning unit 71Y shown in FIG. 6).

  7 to 14 are diagrams showing the cleaning operation of the scraper by the first cleaning unit in FIG. Referring to FIGS. 7 to 9, first cleaning unit 71 is in the first state of waiting for scraping plate 21 until scraping plate 21 reaches the position where first cleaning unit 71 is provided. At this time, in the first cleaning unit 71, the tip 73 j is positioned on the movement path of the scraping plate 21, the weight 74 is disposed at the lowermost position, and the plate 73 is provided with the tip 73 j and the weight 74. And a posture extending in a substantially vertical direction.

  With reference to FIGS. 10 to 13, when the scraping plate 21 reaches the position where the first cleaning unit 71 is provided, first, the tip 73 j of the first cleaning unit 71 is moved to the first end of the scraping plate 21. It contacts the first surface 21a of the side 22. The first cleaning unit 71 starts swinging about the shaft 72 by being pushed by the moving scraping plate 21. As the first cleaning portion 71 swings, the contact position of the tip portion 73j with the first surface 21a is displaced in an arc shape. The tip portion 73j is displaced so as to sequentially rub the first surface 21a of the first end portion 22 and the first surface 21a of the second end portion 23.

  When the distal end portion 73j reaches the end of the first surface 21a of the second end portion 23, the first cleaning unit 71 is set to the second state in which the cleaning of the scraping plate 21 is completed. At this time, in the first cleaning unit 71, the weight portion 74 is lifted from the lowermost portion, the tip portion 73j is pushed down from the uppermost portion, and the plate-shaped portion 73 is tilted between the tip portion 73j and the weight portion 74. The posture is extended.

  Referring to FIG. 14, when the scraping plate 21 is separated from the first cleaning unit 71, the support of the first cleaning unit 71 by the scraping plate 21 is released. The first cleaning portion 71 swings like a pendulum due to the weight of the weight portion 74, and eventually returns to the initial state of the first state.

  Next, the second cleaning unit 76 will be described. Referring to FIGS. 1, 5 and 6, second cleaning portion 76 has a shaft portion 77, a plate-like portion 78, and a weight portion 79 as its constituent parts. The shaft portion 77 extends axially along the width direction of the chip conveyor 10. The shaft portion 77 is provided vertically above the moving scraping plate 21. The second cleaning unit 76 is provided so as to be rotatable about a shaft 77.

  The plate portion 78 has a shape extending in a plate shape from the shaft portion 77. The plate portion 78 extends vertically downward from the shaft portion 77. The plate portion 78 has a tip portion 78j at a tip extending vertically downward. The weight portion 79 is provided at a distal end where the plate-shaped portion 78 extends vertically downward from the shaft portion 77.

  The second cleaning unit 76 operates to rub the second surface 21b of the scraping plate 21 while receiving a force from the moving scraping plate 21. More specifically, the second cleaning unit 76 waits for the scraping plate 21 based on the force received from the moving scraping plate 21 and the weight of the weight unit 79 (the second cleaning unit 76X shown in FIG. 6). ) And a second state in which the cleaning of the scraping plate 21 is completed (a second cleaning section 76Y shown in FIG. 6).

  FIGS. 15 to 23 are views showing the cleaning operation of the scraper by the second cleaning unit in FIG. Referring to FIG. 14, until the scraping plate 21 reaches the position where the second cleaning unit 76 is provided, the second cleaning unit 76 is in the first state of waiting for the scraping plate 21. At this time, the second cleaning portion 76 is positioned such that the tip portion 78j and the weight portion 79 are vertically lower than the moving path of the scraping plate 21 and positioned at the lowest position, and the plate-shaped portion 78 is , Between the distal end portion 78 j and the weight portion 79, the posture extends in a substantially vertical direction so as to straddle the movement path of the scraping plate 21.

  Referring to FIGS. 15 to 17, when the scraping plate 21 reaches the position where the second cleaning unit 76 is provided, first, the plate-shaped portion 78 of the second cleaning unit 76 is moved to the first end of the scraping plate 21. It contacts the part 22. The second cleaning unit 76 starts swinging about the shaft 77 by being pushed by the moving scraping plate 21. With the swing of the second cleaning portion 76, the weight portion 79 is lifted from the lowermost portion, and the distal end portion 78j is displaced to a position where it contacts the second surface 21b of the first end side portion 22.

  With reference to FIGS. 18 to 22, when the scraping plate 21 further moves, the second cleaning unit 76 moves in the reverse direction by the weight of the weight 79 while maintaining the state in which the tip 78 j is in contact with the second surface 21 b. Start to rock. With the swing of the second cleaning unit 76, the contact position of the tip 78j with the second surface 21b is displaced in an arc shape. The tip portion 78j is displaced so as to sequentially rub the second surface 21b of the first edge 22 and the second surface 21b of the second edge 23.

  When the distal end portion 78j reaches the end of the second surface 21b of the second end side portion 23, the second cleaning section 76 is set to the second state in which the cleaning of the scraping plate 21 is completed. At this time, in the second cleaning unit 76, the weight 79 and the tip 78 j are lifted from the lowermost portion, and the plate-like portion 78 is inclined between the shaft 77 and the tip 78 j and the weight 79. The posture is extended.

  Referring to FIG. 23, when scraping plate 21 is separated from second cleaning unit 76, the support of second cleaning unit 76 by scraping plate 21 is released. The second cleaning portion 76 swings like a pendulum due to the weight of the weight portion 79, and eventually returns to the initial state in the first state.

  FIG. 24 is a cross-sectional view illustrating a state of a scraping plate cleaned by the first cleaning unit and the second cleaning unit in FIG.

  Referring to FIG. 24, after the scraping plate 21 has passed through the end 43 of the guide plate 41, chips 111 are adhered to the first surface 21a and the second surface 21b of the scraping plate 21. In particular, in the present embodiment, since the through holes 26 are formed in the scraping plate 21, there are many chips 111 caught in the through holes 26.

  First, the first cleaning unit 71 operates to rub the first surface 21 a of the scraping plate 21, thereby removing the chips 111 attached to the first surface 21 a and pulling the chips 111 from the through holes 26. At this time, the chips 111 having a relatively large width are not pulled out from the through holes 26 but remain.

  Next, the second cleaning unit 76 operates to rub the second surface 21b of the scraping plate 21, thereby removing the chips 111 attached to the second surface 21b and pushing out the chips 111 caught in the through holes 26. . Through such a two-stage cleaning process from the first surface 21a side and the second surface 21b side of the scraping plate 21, the chips 111 can be more reliably removed from the scraping plate 21.

  FIG. 25 is a cross-sectional view showing the positional relationship between the end of the guide plate and the first cleaning unit and the second cleaning unit in the chip conveyor in FIG.

  Referring to FIG. 25, guide plate 41 has a horizontal section 45 extending from end portion 43 to a predetermined length. The end portion 43 is provided on the upstream side of the position 36 where the moving direction of the scraping plate 21 is changed by the driving sprocket 61 in the moving direction of the scraping plate 21. According to such a configuration, by setting the timing at which the chips conveyed on the guide plate 41 are released from the scraping plate 21 earlier, the chips are more efficiently discharged from the end 43 of the guide plate 41. can do.

  The first cleaning unit 71 and the second cleaning unit 76 are provided between the end 43 of the guide plate 41 and the chip discharge port 53 in the vertical direction. The end 43 of the guide plate 41 is provided between the first cleaning unit 71 and the second cleaning unit 76 in the horizontal direction. According to such a configuration, the falling direction of the chips discharged from the end 43 of the guide plate 41 can be regulated by the first cleaning unit 71 and the second cleaning unit 76. Thus, for example, it is possible to prevent chips from entering the cover body 51 without going to the chip discharge port 53.

  The structure of the chip conveyor 10 according to the embodiment of the present invention described above will be described collectively. The chip conveyor 10 according to the present embodiment moves while slidingly contacting the guide plate 41 for guiding chips. And a scraping plate 21 for transporting chips on the guide plate 41. The scraping plate 21 has a first surface 21a facing the side in the movement direction, and a second surface 21b disposed behind the first surface 21a. The chip conveyor 10 is provided on a movement path of the scraper 21, operates to rub the first surface 21 a while receiving a force from the moving scraper 21, and cleans the scraper 21. A second cleaning unit 76 is provided on the movement path of the scraper 21, operates to rub the second surface 21 b while receiving a force from the moving scraper 21, and cleans the scraper 21.

  According to the chip conveyor 10 according to the embodiment of the present invention configured as described above, the first cleaning unit 71 and the second cleaning unit 76 respectively move the first surface 21a of the scraping plate and the second cleaning unit 76 with the movement of the scraping plate. By operating to rub the second surface 21b, chips can be removed from the scraping plate 21. Thereby, it is possible to prevent chips from being brought back by the scraping plate 21.

  The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  INDUSTRIAL APPLICATION This invention is mainly utilized for the chip conveyor which conveys the chip of the workpiece | work generated in the machine tool.

  Reference Signs List 10 chip conveyor, 21 scraper, 21a first surface, 21b second surface, 22 first edge, 23 second edge, 26 through hole, 31 endless chain, 36 position, 41 guide plate, 42, 43 End, 45 horizontal section, 47 space, 51 cover body, 52 chip receiving port, 53 chip discharging port, 56 horizontal section, 57 rising section, 61 drive sprocket, 62 driven sprocket, 63 filter, 64 internal space, 71, 71X , 71Y First cleaning part, 72, 77 Shaft part, 73, 78 Plate part, 73j, 78j Tip part, 74, 79 Plumb part, 76, 76X, 76Y Second cleaning part, 91, 92 Reverse position, 111 chip .

Claims (7)

A guide plate for guiding chips,
A scraping plate that moves while slidingly contacting the guide plate and transports chips on the guide plate,
The scraper has a first surface facing the side in the movement direction, and a second surface disposed behind the first surface,
A first cleaning unit that is provided on a movement path of the scraping plate, operates to rub the first surface while receiving a force from the moving scraping plate, and cleans the scraping plate;
Provided on the movement path of the scraper, the Rukoto receives a force from the scraper to move is moved to the second surface from said first surface, and operates to rub the second surface, A second cleaning unit that cleans the scraper ,
The chip conveyor, wherein the first cleaning unit and the second cleaning unit are provided side by side in a moving direction of the scraper .   The chip conveyor according to claim 1, wherein a through hole penetrating from the first surface to the second surface is formed in the scraper. Before Symbol first cleaning unit, the than the second cleaning unit is arranged upstream in the moving direction of the scraper, the chip conveyor according to claim 1 or 2. The first cleaning unit and the second cleaning unit have a weight,
The first cleaning unit and the second cleaning unit are configured to wait for the scraping plate in each of the cleaning units according to the force received from the moving scraping plate and the weight of the weight unit, and to clean the scraping plate. The chip conveyor according to any one of claims 1 to 3, wherein the chip conveyor swings between a second state and a second state in which the operation is completed. A chip body having a chip discharge port, and further comprising a cover body configured to be able to discharge chips conveyed by the scraper through the chip discharge port,
The chip conveyor according to any one of claims 1 to 4, wherein the first cleaning unit and the second cleaning unit are provided above the chip discharge port. A cover body having a chip discharge port, and configured to be able to discharge chips conveyed by the scraper through the chip discharge port,
An endless chain to which the scraper is connected, and which rotates the scraper by rotating,
A sprocket that is provided above the chip discharge port and changes a moving direction of the scraping plate by being looped around the endless chain;
The guide plate has an end that discharges chips toward the chip discharge port,
The chip conveyor according to any one of claims 1 to 5, wherein the end portion is provided upstream of a position where the movement direction of the scraping plate is changed by the sprocket in the movement direction of the scraping plate. The first cleaning unit and the second cleaning unit are provided between the end and the chip discharge port in a vertical direction,
The chip conveyor according to claim 6, wherein the end is provided between the first cleaning unit and the second cleaning unit in a horizontal direction.

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