JP5437139B2 - Remaining material discharge device of bar feeder - Google Patents

Description

  The present invention relates to a remaining material discharging apparatus for a bar feeder that discharges a bar of a bar feeder.

  The bar feeder supplies the bar to the NC automatic lathe. The bar feeder includes a material shelf for stocking the bar and a conveying device that receives the bar from the material shelf and conveys the bar to the processing machine. The conveying device includes a feed chuck provided with a finger chuck for gripping a bar. The conveying device supports and guides the bar and the feed rod.

  The feed rod pushes the bar in a state where the end of the bar is gripped by the finger chuck, and feeds the bar into the main spindle of the NC automatic lathe. The bar is fixed by the chuck of the main shaft and cut while being rotated. The processed part of the bar is cut after cutting.

  By repeating the cutting and cutting, the bar is gradually shortened and finally becomes a remaining material. The remaining material is returned to the conveying device by the feed rod and discharged by the remaining material discharging device 100 shown in FIG.

  The remaining material discharging device 100 includes a swingable remaining material support 101 that supports the remaining material, a discharge rail 102 that guides the remaining material dropped from the remaining material support 101, and a remaining material passage sensor that detects the passage of the remaining material. 103.

  The remaining material R1 is disposed on the remaining material support 101. When the remaining material support 101 rotates, the remaining material R2 falls from the remaining material support 101 onto the discharge rail 102. The remaining material R3 reaches the remaining material detection plate 103 while rolling on the remaining material discharge rail 102. The remaining material R4 swings the remaining material detection plate 103 by its own weight and passes through the remaining material detection plate 103. The remaining material falls to the remaining material stocker.

  However, a bar material made of a material with a small specific gravity such as an aluminum material or a light bar material with a thin material diameter has a small drop energy. Therefore, the remaining material passage detection plate 103 is not operated by the remaining material, and the remaining material is discharged. There was a mistake.

  On the other hand, when the remaining material advances diagonally as indicated by R6-R7, the remaining material detection plate 103 is avoided, and the remaining materials R6 and R7 were not detected.

  SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to provide a remaining material discharge device of a bar material feeder that reliably discharges the remaining material of a bar material.

  A second object of the present invention is to provide a remaining material discharge device of a bar material feeder that reliably detects the remaining material of a bar material.

  Hereinafter, the features of the present invention will be described with reference numerals. Note that the reference numerals are for reference, and the present invention is not limited to the embodiments.

  The remaining material discharge device (60, 60A) of the bar feeder according to the features of the present invention is disposed in the bar feeder (1) and discharges the remaining material (M1) of the bar (B1). In the discharging device (60, 60A), a remaining material passage detecting device (70) for detecting the passage of the remaining material and a remaining material removing device (63, 63A) for removing the remaining material stopped by the remaining material passage detecting device (70). 64, 65, 67).

  In the above features, the remaining material passage detecting device (70) has a remaining material detecting member (71) supported so as to be swung by the remaining material, and the remaining material is removed from the remaining material detecting member (71). It has a pushing member (63, 63A) to push out.

  The remaining material detection member (71) has a recess (71b), and the push-in members (63, 63A) have a protrusion (63b) that can pass through the recess (71b).

  The remaining material removing device has a driving device (64, 67) for operating the pushing member (63, 63A).

  The drive device has an actuating member (64) that pushes the pushing member (63) toward the remaining material detecting member (71).

  The drive device has a linear actuator (67) that pushes the pushing member (63A) toward the remaining material detecting member (71).

  The remaining material removing device includes an elastic member (65) that moves the pushing members (63, 63A) away from the remaining material detecting member (71).

  The remaining material discharging device has a discharging guide (62) for guiding the remaining material to the remaining material detecting member (71).

  The discharge guide (62) has a hole (62b) through which the protrusion (63b) of the pushing member (63) can pass.

  The remaining material passage detection device (70) includes a sensor dog (72) rotatably supported together with the remaining material detection member (71), and a proximity sensor (73) that detects the sensor dog (72).

  The actuating member (64) pushes the pushing member (63), and the pushing member (63) passes through the remaining material detecting member (71).

  The linear actuator (67) pushes the pushing member (63), and the pushing member (63) passes through the remaining material detecting member (71).

  The remaining material discharging device has a remaining material support (61) for discharging the remaining material while the remaining material is disposed, and the operating member (64) operates in synchronization with the operation of the remaining material support (61).

  When the remaining material passage detecting device (70) does not detect the passage of the remaining material, the remaining material removing device (63, 63A, 64, 67) is operated to remove the remaining material.

  Since the pushing member reliably discharges the remaining material of the remaining material detecting member, it is possible to prevent an error in discharging the remaining material.

  Since the pushing member operates until it passes through the remaining material detecting member, the remaining material can be excluded regardless of the size of the material diameter.

  Since the protrusion of the pushing member can pass through the notch portion of the remaining material detecting member, interference between the pushing member and the remaining material detecting member can be prevented when there is no remaining material.

  Moreover, since the state of the remaining material can be determined, safety is improved.

It is a front view showing the bar feeder and lathe concerning an embodiment. It is a top view of the bar feeder and lathe shown in FIG. It is a side view of the bar feeder shown in FIG. It is a longitudinal cross-sectional view of the conveying apparatus of the bar feeder shown in FIG. (A) is a side view of the remaining material discharge device of the bar material supply device shown in FIG. 2, and (B) is a cross-sectional view of the remaining material discharge device along IVB-IVB in FIG. (A) is a side view which shows operation | movement of the remaining material discharge apparatus shown to FIG. 5 (A), (B) is a front view which shows operation | movement of the remaining material discharge apparatus. It is the side view of the apparatus with which operation | movement was inhibited by the remaining material in the remaining material discharge apparatus shown to FIG. 5 (A). It is a flowchart which shows the discharge method of the remaining material of a bar. (A) is a side view of the remaining material discharging apparatus according to the second embodiment, and (B) is a side view of the remaining material discharging apparatus after operation. (A) is a side view which shows operation | movement of the remaining material discharge apparatus of a related bar supply apparatus, (B) is a front view of the remaining material discharge apparatus.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

1st Embodiment As shown in FIG. 1, the bar supply machine 1 is arrange | positioned next to the lathe 2 as a processing apparatus. The bar feeder 1 includes a main body 3b supported by a base 3a, an upper lid 3c combined with the main body 3b, a control box 4 disposed under the main body 3b, and an operation panel 6 at the front of the main body 3b. Including.

  As shown in FIG. 2, the lathe 2 includes a cylindrical main shaft 7 through which a bar B1 can pass. The lathe 2 includes a chuck 8 that holds the bar B1 at one end of the main shaft 7. The chuck 8 moves linearly with the main shaft 7 and is rotatable about the main axis A1. The lathe 2 has a cutting tool such as a cutting tool for processing the tip of the bar B1. The main shaft 7 may be a fixed type that does not move linearly.

  The bar feeder 1 includes a material shelf 10 for stocking the bar B1. The feeder 1 includes a conveying device 20 that receives the bar B1 from the material shelf 10 and conveys it to the lathe 2. The material shelf 10 and the transfer device 20 are controlled by the control box 4.

  As shown in FIG. 3, the material shelf 10 includes an inclined bar stocker 11 having a recess 11a in which bars are arranged in parallel. The material shelf 10 includes an L-shaped take-out lever 12 that is rotatable about a rotation shaft 13 so as to lift the bar B1 from below. The material shelf 10 includes a cylinder 14 that drives a take-out lever 12. This cylinder 14 is swingably supported by the main body 3b. Then, the cylinder 14 is operated to rotate the take-out lever 12 in the clockwise direction, and the leading bar B1 is lifted by the tip 12a of the lever 12 and taken out from the recess 11a. This bar B1 moves toward the conveying device 20 along the slope 11b of the bar stocker 11.

  As shown in FIG. 4, the transport device 20 includes a feed rod 21 centered on the axis A <b> 1 of the main shaft 7. The feed rod 21 includes a finger chuck 21a that can grip the rear end of the bar B1, a bearing 21b that rotatably supports the finger chuck 21a, and a push bar 21c that is fixed to the bearing 21b. Referring to FIGS. 2 and 3, conveyance device 20 includes a delivery motor 22 that drives feed rod 21. The transport device 20 includes a slider 23 fixed to the rear portion of the feed rod 21. The conveying device 20 includes a slider guide 24 that is disposed along the axis A <b> 1 and is fixed to the bar stocker 11 and engaged with the slider 23. The transport device 20 includes a drive sprocket 26 and a tip sprocket 27 on which a drive chain 25 connected to one of the sliders 23 is hung. Then, the delivery motor 22 is operated to rotate the drive sprocket 26. The rotating drive sprocket 26 travels the drive chain 25 via the tip sprocket 27 and moves the feed rod 21 connected to the slider 23 forward or backward together with the slider 23 using the connecting member 23a.

  With reference to FIG. 3, the transport device 20 includes an attachment stay 28 attached to a base 29 and a guide device 30 that is supported by the attachment stay 28 and guides the feed rod 21. The mounting stay 28 and the guide device 30 are arranged at a predetermined interval along the axis A1.

  The guide device 30 includes a lower support stay 31 that is supported by the mounting stay 28 with an anti-vibration rubber 41 interposed therebetween. The guide device 30 includes an upper support arm 33 that is rotatably connected to the lower support stay 31 using a fulcrum shaft 32. The guide device 30 includes a cylinder 34 that drives the upper support arm 33 (see FIG. 4).

  The guide device 30 includes a U-shaped lower support guide 36 connected to the lower support stay 31 by a lower connection rail 35. The guide device 30 includes an upper support guide 38 connected to the upper support arm 33 by an upper connection rail 37. The guide device 30 includes a support case 39 as a bush positioned inside the lower support guide 36. The guide device 30 includes a U-shaped anti-vibration rubber 43 disposed between the lower support guide 36 and the support case 39.

  As shown in FIG. 3, the transport device 20 includes a vibration damping mechanism 40 that prevents the feed rod 21 from vibrating. The vibration damping mechanism 40 includes an anti-vibration rubber 41 disposed between the mounting stay 28 and the lower support stay 31. The vibration damping mechanism 40 includes an anti-vibration pad 42 made of urethane rubber, which is arranged at a predetermined interval along the axis A1 and is arranged with a gap from the top of the feed rod 21 (see FIG. 4). The anti-vibration pad 42 is fixed inside the upper support guide 38 with screws. The anti-vibration pad 42 defines a space that matches the size of the feed rod 21 together with the inner surface of the support case 39 and prevents the feed rod 21 from moving upward. The anti-vibration pad 42 may have a semi-circular cross section combined with the diameter of the feed rod 21 in addition to a rectangular cross section. The vibration damping mechanism 40 includes a U-shaped anti-vibration rubber 43 as an elastic body disposed between the support case 39 and the lower support guide 36. The anti-vibration rubber 43 can be replaced independently to accommodate partial wear.

  As shown in FIG. 2, the tip of the bar feeder 1 includes a bar steadying device 50 between the transport device 20 and the lathe 2. The bar steadying device 50 prevents rotational runout of the bar B1 during the operation of the lathe 2.

  The conveyance device 20 includes a remaining material discharge device 60 that discharges the remaining material of the bar B1 in front of the feed rod 21 at the original position.

  As shown in FIGS. 5A and 5B, the remaining material discharging device 60 is disposed next to the remaining material support 61 and the remaining material support 61 that is rotatably supported while the remaining material M <b> 1 is disposed. A discharge rail 62 as a discharge guide, a push plate 63 as a rotatable push member protruding above the discharge rail 62, and an operation as an operation member that is rotatably attached to the remaining material support 61 and hits the push plate 63 A plate 64, a spring 65 as an elastic member for urging the pushing plate 63, a remaining material stocker 66 for storing the remaining material moved on the discharge rail 62, and a remaining material passage detecting device 70 for detecting the passage of the remaining material. Have.

  The remaining material support 61 is arranged in series with the guide device 30. The remaining material support 61 includes a semicircular support guide 61a and a remaining material guide 61b extending from the support guide 61a toward the discharge rail. The support guide 61a is attached to the bracket 61c. The remaining material guide 61b is fixed to the bracket 61c. The bracket 61c is supported by the base 61d so as to be rotatable about the fulcrum shaft P1. The bracket 61c is driven by a cylinder (not shown).

  The discharge rail 62 is disposed in front of the remaining material support 61 a and extends to the remaining material stocker 66. The discharge rail 62 has a group of rectangular notches 62b that form a slot-like hole in the center of the base 62a in the extending direction (see FIG. 6B). The discharge rail 62 has a curved portion 62c that bends further downward in the extending direction. The curved portion 62c is positioned in the notch 62b.

  The push-in plate 63 has a bent substrate 63a and a group of protrusions 63b that extend vertically from the tip of the substrate 63a and are spaced from each other. The substrate 63a is supported so as to be rotatable about the fulcrum shaft P2. Each of the protrusions 63b passes through the group of notches 62b of the discharge rail 62 and protrudes upward from the discharge rail 62. The projection 63b group is positioned in front of a remaining material detection plate 71 described later in the direction of remaining material movement.

  The operation plate 64 is attached to the bracket 61 c of the remaining material support 61. The operation plate 64 is rotatably supported by the fulcrum shaft P1. The operating plate 64 normally contacts the pushing plate 63. On the other hand, when the operation plate 64 rotates counterclockwise together with the remaining material support 61, the operation plate 64 moves away from the push-in plate 63.

  The spring 65 is, for example, a coil spring. The spring 65 urges the pushing plate 63 in the clockwise direction to move the pushing plate 63 away from the remaining material detection plate 71. An elastic resin may be used instead of the spring.

  Here, the push-in plate 63, the operation plate 64, and the spring 65 constitute a remaining material removing device. The remaining material passage detection device 70 includes a remaining material detection plate 71 as a remaining material detection member supported so as to be swingable, a sensor dog 72 that can rotate coaxially with the remaining material detection plate 71, and a proximity sensor that detects the sensor dog 72. 73 and a control device (not shown). The remaining material detection plate 71 is disposed over the entire width of the remaining material discharging device 60 (see FIG. 5B). The remaining material detection plate 71 includes a substrate 71a attached to the sensor dog 72, and a group of U-shaped cutouts 71b extending from the tip of the substrate 71a and forming a recess. The protrusions 63b of the push-in plate 63 can pass through these notches 71b.

  The sensor dog 72 is rotatably attached to the fulcrum shaft P3. The sensor dog 72 is usually arranged so as to coincide with the proximity sensor 73.

  As the proximity sensor 73, for example, an induction type, a capacitance type, an ultrasonic type, an electromagnetic wave type, or an infrared type is used. The proximity sensor 73 is turned on when the sensor dog 72 is detected, and turned off when the sensor dog 72 is not detected. The proximity sensor 73 may be turned on when the sensor dog 72 is not detected, and may be turned off when the sensor dog 72 is detected.

  The control device has a CPU, a ROM, a RAM, and a timer. The CPU controls the remaining material support 61 and the remaining material passage detection device 70 according to the control program. The ROM stores a control program. The RAM temporarily stores control data. The timer measures a predetermined time for monitoring the passage of the remaining material.

  Next, a method for using the bar feeder 1 will be described.

  In FIG. 1, the bar feeder 1 is started by operating the operation panel 6.

  In FIG. 3, the upper support arm 33 is rotated counterclockwise with respect to the lower support stay 31, and the upper support guide 38 is separated from the lower support guide 36. Thereby, the upper part of the support case 39 is opened.

  Next, the cylinder 14 is operated to rotate the take-out lever 12 clockwise. The leading end 12a of the take-out lever lifts the top bar B1 and takes it out from the recess 11a. The removed bar B1 descends the slope 11b of the stocker 11 and falls into the support case 39.

  The upper support arm 33 is rotated clockwise with respect to the lower support stay 31 to bring the upper support guide 38 closer to the lower support guide 36. As a result, the upper support guide 38 is positioned on the lower support guide 36, and the anti-vibration pad 42 is disposed with the gap between the top of the feed rod 21 and the gap.

  As shown in FIG. 2, the feed motor 22 is operated to rotate the drive sprocket 26, and the slider 23 is moved along the slider guide 24 toward the lathe 2 by the drive chain 25. This operation moves the feed rod 21 toward the lathe 2 along the axis A1. Referring to FIG. 4, feed rod 21 is temporarily stopped before bar B1, and the rear end of bar B1 is gripped by finger chuck 21a. Again, the feed rod 21 is moved together with the bar B1 on the axis A1 toward the lathe 2 and inserted into the main shaft 7 of the lathe 2 (see FIG. 2). The chuck 8 of the main shaft 7 holds the bar B1.

  Next, in FIG. 2, the lathe 2 is operated to rotate the spindle 7 together with the bar B1. The tip of the bar B1 is cut with a blade. During the cutting process, the bar steadying device 50 prevents rotational runout of the bar B1.

  When the bar B1 is repeatedly cut, the bar B1 is gradually shortened to the length of the processing limit. The chuck 8 of the main shaft 7 releases the bar B1.

  The delivery motor 22 is operated to reversely rotate the drive sprocket 26, and the slider 23 is retracted along the slider guide 24 by the drive chain 25. Thereby, the feed rod 21 returns to the original position. As shown in FIG. 5, the bar B1 is positioned on the support guide 61a of the remaining material support 61 as the remaining material M1.

  As shown in FIG. 6, when the support guide 61a is rotated counterclockwise about the fulcrum axis P1, the operation plate 64 is also rotated in synchronization with the counterclockwise direction. The operating plate 64 moves away from the pushing plate 63 and retracts. At this time, the push-in plate 63 is rotated clockwise about the fulcrum shaft P <b> 2 by the spring 65 and is moved away from the remaining material detection plate 71. At this time, the projection 63 b group of the push-in plate 63 passes through the notch portion 71 b group of the remaining material detection plate 71 and the notch portion 62 b group of the discharge rail 62. The tips of the protrusions 63b are retracted below the upper surface of the discharge rail 62.

  The remaining material M1 rolls down from the support guide 61a and proceeds along the remaining material guide 61b. The remaining material M <b> 2 rolls on the discharge rail 62 from the remaining material guide 61 and hits the remaining material detection plate 71.

  The remaining material M3 swings the remaining material detection plate 71 in the clockwise direction by its own weight, and pushes the remaining material detection plate 71 away to pass. The remaining material M4 further travels on the discharge rail 62 and is accommodated in the remaining material stocker 66.

  Here, as shown in FIG. 6B, when the remaining material rolls in an oblique posture as indicated by M5 and M6, the remaining material detection plate 71 is disposed over the entire width of the remaining material discharging device 60. The passage of the materials M5 and M6 can be detected stably.

  As shown in FIG. 5A, the support guide 61a rotates clockwise and returns to the original position. In synchronization with the rotation of the support guide 61a, the operation plate 64 also rotates in the clockwise direction and hits the pushing plate 63. The operation plate 64 rotates the pushing plate 63 counterclockwise against the spring 65. The group of protrusions 63b of the push-in plate 63 passes through the cutout portion 62b of the discharge rail and the cutout portion 71b of the remaining material detection plate 71 and returns to the position in front of the remaining material detection plate 71. Here, the remaining material stopped by the remaining material detection plate 71 is pushed out of the remaining material detection plate 71 by the projections 63 b of the push-in plate 63 and falls to the remaining material stocker 66.

  Next, a control method of the remaining material discharging apparatus 60 will be described with reference to FIG.

  In FIG. 5, when the remaining material M1 is positioned on the remaining material support 61, the remaining material support origin is set (step S1). The remaining material support 61 is caused to perform a discharging operation (step S2). In synchronization with the operation of the remaining material support 61, the operating plate 64 is retracted from the pushing plate 63 (step S3). In synchronization with this, the push-in plate 63 is retracted from the remaining material detection plate 71 (step S4).

  Next, it is confirmed whether or not the remaining material has passed the remaining material detecting plate 71 (step S5). That is, in FIG. 6, when the remaining material detection plate 71 is swung by the remaining material M2, the sensor dog 72 is also rotated in the clockwise direction and detached from the proximity sensor 73. Thereby, the proximity sensor 73 is turned off from on. Under this condition, it is confirmed that the remaining material has passed the remaining material detection plate 71 (yes in step S5), and the control shifts to step S6.

  On the other hand, if the positional relationship between the proximity sensor 73 and the sensor dog 72 does not change and the proximity sensor continues to be on, the remaining material detection plate 71 has not been confirmed to pass the remaining material (step) The control proceeds to step S21.

  In step S6, the remaining material support 61 is rotated clockwise so as to return to the original position. In synchronization with this, the operating plate 64 is rotated to return to the original position (step S7). The operating plate 64 pushes the pushing plate 63 to return to the original position (step S8). Thereby, the remaining material support 61 returns to the original state (step S9). On the other hand, in step S21, the timer is activated to monitor the passage of the remaining material. Here, the timer measurement may be started from any step from step S2 to step S4 indicated by P. This monitoring continues until a predetermined time elapses (no in step S21). When the predetermined time has elapsed, the timer is turned on (yes in step S21), and the process proceeds to step S22.

  In step S22, the remaining material support 61 is rotated clockwise so as to return to the original position. In synchronization with this, the operating plate 64 is returned to the original position (step S23). The pushing plate 63 is returned to the original position by the operation plate 64 (step S24). Thereby, the remaining material support 61 returns to the original state (step S25). During this time, the push-in plate 63 removes the remaining material stopped by the remaining material detecting plate 71.

  Between step 22 and step S25, passage of the remaining material through the remaining material detection plate 71 is confirmed (step S26). When the proximity sensor 73 is turned off from on, it is confirmed that the remaining material has passed through the remaining material detection plate 71 (Yes in step S26), and the control shifts to step S10. On the other hand, if the proximity sensor 73 is kept on, the remaining material has not passed through the remaining material detection plate 71 (no in step S26), and the control shifts to step S27.

  In step S27, the timer is activated to monitor the remaining material passing through the remaining material detection plate 71. Here, the timer measurement may be started from any step from step S2 to step S4. The remaining material passage monitoring is continued until a predetermined time has elapsed (no in step S27). When the predetermined time has elapsed, the timer is turned on (yes in step S27), and the process proceeds to step S28. In step S28, an alarm indicating the absence of remaining material is executed. In this case, it is assumed that the remaining material has dropped off on the way from the lathe 2 to the bar feeder 1 or that the remaining material has not come off the finger chuck of the feed rod 21. The bar feeder 1 is stopped for safety.

  In step S10, before proceeding to the next step (step S11), it is detected whether or not the remaining material detection plate 71 has returned to the original position (step S10). That is, when the proximity sensor 73 detects the sensor dog 72 and is turned on again, the sensor dog 72 returns to the original posture, and the remaining material detection plate 71 returns to the original position (yes in step 10). In this case, the process proceeds to the next step (step S11). On the other hand, if the proximity sensor 73 does not detect the sensor dog 72 and is turned off, the remaining material detection plate 71 has not returned to the original position (no in step S10), and the process proceeds to step S31.

  In step S31, the timer is operated to monitor the passage of the remaining material through the remaining material detection plate 71. In this case, it is confirmed whether the proximity switch 73 is turned on from off. Here, the timer measurement may be started from any step from step S2 to step S4. This monitoring continues until a predetermined time elapses (no in step S31). When the predetermined time has elapsed, the timer is turned on (yes in step S31), and the process proceeds to step S32. In step 32, an alarm is executed that the remaining material is full in the remaining material stocker 26. That is, as shown in FIG. 7, when the remaining material becomes full in the remaining material stocker, the remaining material M7 does not move forward due to the previous remaining material M8, and the remaining material detection plate 71 may also return to the original position. Can not. Also in this case, the bar feeder 1 is stopped for safety.

  According to the above embodiment, since the pushing plate 63 reliably discharges the remaining material of the remaining material detection plate 71, it is possible to prevent an error in discharging the remaining material.

  The push-in plate 63 operates to pass through the remaining material detection plate 71 and rotate to the front of the remaining material detection plate 71, so that the remaining material can be excluded regardless of the size of the material diameter.

  Since the projection 63b group of the push-in plate 63 can pass through the cutout portion 71b group of the remaining material detection plate 71, when there is no remaining material, the interference between the push-in plate 63 and the remaining material detection plate 71 can be prevented.

  Since the state of the remaining material can be determined, safety is improved.

Second Embodiment As shown in FIG. 9, the remaining material discharging device 60 </ b> A uses a cylinder 67 instead of the operation plate 64 as a driving device. The cylinder 67 has a cylinder rod 67a that can be moved forward and backward. Instead of the cylinder 67, a linear actuator such as a pinion rack mechanism, a linear cam, a linear slider, or a ball screw mechanism may be used. The remaining material discharge device 60A includes a push-in plate 63A having a group of guide protrusions 63c extending obliquely rearward from the tip of the protrusion 63b group. The cylinder 67, the push-in plate 63A, and the spring 65 constitute a remaining material removing device.

  According to the remaining material discharging device 60A, as shown in FIG. 9B, the cylinder rod 67a of the cylinder 67 is moved backward from the pushing plate 63A in synchronization with the remaining material discharging operation of the support guide 61a. The push-in plate 63 </ b> A is rotated away from the remaining material detection plate 71 by the spring 65. The group of protrusions 63 b of the push-in plate 63 </ b> A passes through the notch 62 b of the discharge rail 62, and the group of guide protrusions 63 c is disposed on the discharge rail 62. The remaining material M3 passes over the protrusion 63c group. The remaining material M4 passes through the remaining material detection plate 71, and the remaining material M5 is accommodated in the remaining material stocker 66. The cylinder 67 may be operated before the remaining material discharging operation independently of the support guide 61a.

  On the other hand, when the support guy 61a performs the return operation, the cylinder rod 67a moves forward and pushes the pushing plate 63 in synchronism with this, causing the pushing plate 63 to perform the discharging operation of the remaining material. The cylinder 67 may be operated independently of the return operation of the support guide 61a. Alternatively, another pushing plate may be attached to the cylinder rod 67a of the cylinder 67, and the pushing material may be linearly moved toward the remaining material detection plate 71 by the cylinder rod 67a to remove the remaining material from the remaining material detection plate 71.

  It should be noted that the above embodiments can be changed and modified without changing the gist of the invention. For example, the sensor dog 72 may normally be shifted from the proximity sensor 73 and coincide with the proximity sensor 73 when the remaining material detection plate 71 is operated. Further, the remaining material may be dropped directly from the feed rod 21 onto the discharge rail 62 without using the remaining material support 61.

1 Bar feeder
10 Material shelf
20 Conveying device 30 Guide device 50 Stabilizer
60 Remaining material discharge device 61 Remaining material support
62 Discharge rail 63 Push-in plate 64 Actuating plate 65 Spring 70 Remaining material passage detection device 71 Remaining material detection plate 72 Sensor dog 73 Proximity sensor

Claims (14)

In the remaining material discharge device that is disposed in the bar supply machine and discharges the remaining material of the bar,
A residual material passage detection device for detecting the passage of the residual material;
It has a residual material removal device that eliminates the residual material stopped by the residual material passage detection device,
Remaining material discharging device for bar feeder. The residual material passage detection device has a residual material detection member supported so as to swing by the residual material,
The remaining material removing device has a pushing member that pushes out the remaining material from the remaining material detecting member,
The residual material discharging apparatus according to claim 1. The remaining material detection member has a recess,
The pushing member has a protrusion that can pass through the recess,
The residual material discharging apparatus according to claim 2. The residual material removing device has a drive device that operates the pushing member.
The residual material discharging apparatus according to claim 2. The driving device has an operation member that pushes the pushing member toward the remaining material detection member.
The residual material discharging apparatus according to claim 4. The drive device has a linear actuator that pushes the pushing member toward the remaining material detection member,
The residual material discharging apparatus according to claim 4. The remaining material removing device has an elastic member that moves the pushing member away from the remaining material detecting member.
The residual material discharging apparatus according to any one of claims 2 to 6. Having a discharge guide for guiding the remaining material to the remaining material passage detecting member;
The remaining material discharging apparatus according to claim 2. The discharge guide has a hole through which the protrusion of the pushing member can pass.
The residual material discharging apparatus according to claim 8. The remaining material passage detection device is:
A sensor dog rotatably supported with the remaining material detection member;
A proximity sensor for detecting the sensor dog;
The residual material discharging apparatus according to claim 1. The actuating member pushes the pushing member, and the pushing member passes through the remaining material detecting member.
The residual material discharging apparatus according to claim 5. The linear actuator pushes the pushing member, and the pushing member passes through the remaining material detecting member;
The residual material discharging apparatus according to claim 6. The remaining material is arranged and has a remaining material support for discharging the remaining material,
The actuating member operates in synchronization with the operation of the remaining material support.
The residual material discharging apparatus according to claim 11. When the remaining material passage detection device does not detect the passage of the remaining material,
Operate the residual material removal device to eliminate the residual material,
The residual material discharging apparatus according to claim 1.

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