JPH0680233A - Insert metal supply device - Google Patents

Abstract

PURPOSE:To accurately supply each insert metal uniformly over a metallic plate when a vibration isolating metallic plate is manufactured, which comprises respective metallic plates overlapped via one insert metal. CONSTITUTION:An orderly carrying feeder 1 in which guiding grooves 1b in a plural number of rows guiding each insert metal, are formed at equal intervals in the transverse direction while being lowered in level in the downstream side, is provided with a vibration imparting means 2, a line-up holding mechanism 3 holding the insert metals while being lined up in the downstream side, and with a supply feeder 5 which scatters the insert metals, at the upstream side. And absorbing pads 7 absorbing each insert metal, are provided at the upper position of a feeding means 6 in such a way as to be freely moved up and down by a lifting means 8 wherein a hold member 6a in which a hold section holding each insert metal at the end section of the orderly carrying feeder 1 in the downstream side, is set in the orderly carrying feeder 1 in such a way as to be freely reciprocated, and a trolley 9 clamping a metallic plate 11 is provided at the lower position of each absorbing pad 7 in such a way as to be freely moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a vibration-damping metal plate in which metal plates are superposed on each other with an insert metal interposed therebetween, and before the metal plates are superposed on each other, an insert is formed on one of the metal plates. The present invention relates to an insert metal supply device capable of supplying metal in a uniform state with high accuracy.

[0002]

2. Description of the Related Art In recent years, control of noise pollution and quiet environment have been required, and the range of use and demand of vibration damping materials have expanded. With the expansion of this range of use, there is a demand for a vibration damping material that is excellent not only in vibration damping performance but also in strength, heat resistance, workability, and the like. Therefore, the present applicant has found that an insert metal having a minute width is interposed between the stacked metal plates and the metal plates are joined together by metallurgical joining by diffusion. Is formed, and the parts other than this part are in contact with each other without being joined metallurgically, and the vibration damping performance, strength, heat resistance,
A vibration damping metal plate having excellent properties such as workability (hereinafter referred to as a composite vibration damping metal plate) has been proposed.

In order to manufacture the above-mentioned composite type vibration damping metal plate, the insert metal is substantially evenly distributed on one of the metal plates to be laminated, and then the other metal plate is laminated on the insert metal of this metal plate. After the combination, annealing is performed in a state where surface pressure is applied between these metal plates and at a temperature at which diffusion occurs between each metal plate and the insert metal. This composite type vibration-damping metal plate can exhibit vibration damping performance only when the parts that are in contact with each other in a non-metallurgically unbonded state are formed except for the metal-metallurgically-bonded main joining factor. In addition, since the joining strength between metal plates is influenced by the proportion of the joints whose main factor is the metallurgical joining, the thickness of the insert metal is relatively thin and the area is relatively small. It is preferable that the shape is a shape. Conventionally, in the process of manufacturing a composite type vibration-damping metal plate, the insert metal having a small thickness and a relatively small area as described above was manually supplied to the metal plate so as to be distributed substantially uniformly.

However, in order to manufacture the composite vibration-damping metal plate so as to have a bonding strength that does not hinder practical use,
Since the insert metal having a small thickness and a relatively small area as described above has to be uniformly distributed on the metal plate so as to occupy up to 50% of the area with respect to the projection surface of the metal plate (Japanese Patent Application Laid-Open No. Hei 3 (1999) -311) -81137 and Japanese Unexamined Patent Publication (Kokai) No. 3
(See Japanese Patent Publication No. 81138), the productivity of the composite type vibration-damping metal plate is poor because the work of distributing it requires a lot of labor and time, and the insert metal is evenly distributed on the metal plate. Even if you try to do this, there is a limit to its accuracy because it is a manual operation, and the manufactured composite vibration-damping metal plates are joined because the insert metal intervenes in a non-uniform distribution state between the metal plates. There was a drawback that the strength was non-uniform and stable quality products could not be manufactured.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and supplies the insert metal onto the metal plate accurately and substantially uniformly and efficiently to obtain a uniform and stable quality. An object of the present invention is to provide an insert metal supply device that enables efficient production of the composite type vibration damping metal plate.

[0006]

As a result of various studies to solve the above problems, the inventors of the present invention have found that a plurality of rows of guide grooves slightly wider than the maximum diameter of a substantially disc-shaped insert metal are arranged in the width direction. A vibration imparting device for imparting vibration to the feeding feeder which is formed at a low interval and is formed low on the downstream side to move the insert metal to the downstream side along the guide groove and the insert metal guided to the downstream side are aligned and held. An aligning and holding mechanism is installed, and a feed feeder that sprinkles insert metal is provided upstream of the feeder and an insert metal that has been guided through guide grooves of the feeder at the downstream end of the feeder. The holding member for holding the holding member is formed so as to correspond to each guide groove. The issued suction pad which allowed to adsorb retained insert metal to the holding portion in a position corresponding to the holder of the position was placed vertically movable by a lifting device,
Furthermore, if a carriage that can move the metal plate to which the insert metal is supplied is installed below the suction pad, not only can the insert metal be accurately and almost uniformly supplied on one of the metal plates to be overlapped, The present invention has been completed by researching that the amount of insert metal supplied per unit time can be significantly increased and the productivity of the composite vibration-damping metal plate can be improved.

The insert metal supply device according to the present invention will be described in detail below with reference to the drawings. 1 is a front view showing the outline of one embodiment of an insert metal supply apparatus according to the present invention, FIG. 2 is a schematic plan view of FIG. 1, FIG. 3 is a partially enlarged explanatory view taken along the line AA in FIG. FIG. 3 is a perspective view showing an example of a feeding feeder in which a guide groove is formed.

In the drawings, reference numeral 1 denotes a plurality of rows of guide grooves 1b slightly wider than the maximum diameter of a substantially disk-shaped insert metal 10 formed in a disk shape or a polygonal plate shape close to a circle. The feeding feeder is formed at equal intervals and has a low downstream side. The feeding feeder 1 may have any structure as long as it can sequentially guide the insert metal 10 to the downstream side in the plurality of rows of the guide grooves 1b. In the illustrated embodiment, the plurality of rows of the guide grooves 1b are formed. The most upstream trough
1aa and trough 1ac located on the most downstream side and these troughs 1a
A plurality of intermediate troughs 1ab located between a and 1ac are in an inclined state in which the downstream side becomes lower, and the guide groove 1b of the trough located on the downstream side is sequentially arranged from the guide groove 1b of the trough located on the upstream side. The guide groove 1b of the trough 1aa, which is located at the most upstream side, has a V-shaped cross section and the remaining trough 1ab.
The guide grooves 1b of 1 and 1ac are U-shaped in cross section. Further, the number of rows of the guide grooves 1b of the trough 1aa located at the most upstream side is twice as large as that of the remaining troughs 1ab and 1ac.
And the position of the bottom of the V-shaped guide groove 1b of the trough 1aa located at the most upstream side and the position of the top of the mountain portion of the guide groove 1b of the intermediate trough 1ab that follows. Are installed corresponding to each other at the step portion. Further, a slit 1c having a width smaller than the minimum diameter of the insert metal 10 is formed at the bottom of the guide groove 1b of the intermediate trough 1ab of the feeder feeder 1 along with the movement of the insert metal 10. It is preferable that the dust or the like that has come can be dropped and removed from the slit 1c.

Reference numeral 2 denotes a vibration imparting device for imparting a vibration of fine amplitude to the feeder feeder 1 to move the insert metal 10 to the downstream side, and reference numeral 3 denotes a vibration imparting device 2 provided on the downstream side of the feeder feeder 1. When the insert metal 10 that is vibrated by and is fed to the guide groove 1b of the feeder 1 is guided to the downstream side, the insert metal 10 vertically overlaps or stands up, which is not a predetermined state, that is, a substantially disc shape. The insert metal 10 whose planar portion is not in a state parallel to the guiding direction of the guide groove 1b is removed from the guide groove 1b and only the insert metal 10 guided in the predetermined state is kept in that state. In the illustrated embodiment, an appropriate distance from at least the most downstream position to the upstream side of each guide groove 1b of the trough 1ac positioned most downstream in the illustrated embodiment. The bottom surface of the guide groove 1b and the bottom surface of the guide groove 1b, which is the upper part of the insert metal 10, have a thickness of 2
The cover 3a is installed so as to form an interval of less than double and more than one, preferably about one and a half, and the trough 1ac located on the most downstream side is located upstream of the upstream end of the cover 3a. The guide groove 1b is bent on the side, and no side wall is formed on the side opposite to the guided side wall of the insert metal 10 in this bent portion, and a relatively large through hole continuous with the guide groove 1b. 3b is drilled.

Numeral 4 is a feed feeder below the through hole 3b of the aligning and holding mechanism 3 so that the insert metal 10 removed by dropping through the through hole 3b of the aligning and holding mechanism 3 is conveyed to a supply feeder 5 described later. 1. A conveyor or trough 4a installed in the width direction of 1 and a conveyor from the vicinity of the downstream end of this conveyor or trough 4a to a supply feeder 5 described later.
4b, and the through hole 3b.
If the trough 4a is installed below the
Is installed in a tilted state and a device for applying vibration is provided.

The reference numeral 5 is installed on the upstream side of the feeding feeder 1, and for example, the insert metal 10 introduced therein by applying vibration to the main body having a groove formed on the inner wall surface is guided along the groove. And a distribution gutter whose tip can be reciprocally rotated over the entire width of the feeding feeder 1 in a parts feeder which is used in various fields and can be quantitatively supplied to the outside by sequentially guiding it upwards. It is a supply feeder that consists of

Reference numeral 6 denotes a holding portion for holding the insert metal 10 guided to the positions corresponding to the respective guide grooves 1b of the feeding feeder 1 in a linear state in the width direction of the feeding feeder 1. A holding member 6a is a feeding device installed at the downstream end of the feeding feeder 1 so as to reciprocate with a predetermined stroke, and a hydraulic cylinder or a pneumatic cylinder 6b having a piston rod fixed thereto is installed on the holding member 6a. Has been done. As the holding portion, a circular concave portion having a thickness smaller than the plate thickness of the insert metal 10 is formed at the end portion of the holding member 6a on the side of the feeder 1 or the holding member 6a is guided along each guide groove 1b. A through hole is formed at a position where only one insert metal 10 is placed and at a position corresponding to each guide groove 1b of the holding member 6a so that the lower surface of the insert metal 10 is attracted by vacuum pressure. It is preferable that the suction pad is configured or a combination thereof is used because the insert metal 10 can be surely prevented from falling off when the holding member 6a is moved, and the insert metal 10 can be defined at an accurate position. The alignment holding mechanism 3 described above
The end portion of the cover 3a is preferably extended to the position above the holding portion.

Reference numeral 7 is a position at which the holding member 6a of the feeding device 6 is separated from the downstream side edge of the feeding feeder 1 by a predetermined stroke by the operation of a hydraulic cylinder or a pneumatic cylinder 6b having a piston rod fixed to the holding member 6a. Is a suction pad that is vertically movable by a lifting device 8 while standing by above each holding part of the holding member 6a when the suction pad 7 is fixed. A cylinder 8b having a relatively short stroke in which a support member 8a is fixed to a piston rod is fixed to a cylinder 8d having a relatively long stroke via a support member 8c. Although not shown, a pressure sensor that detects the vacuum pressure of the suction pad 7 when the suction pad 7 sucks the insert metal 10 held by the holding portion of the feeding device 6 is also used as a holding portion of the feeding device 6. In the case where the lower surface of the insert metal 10 is configured to be sucked by vacuum pressure, a pressure sensor for detecting the vacuum pressure of the suction pad for sucking the lower surface of the insert metal 10 is installed, and the feeding device is also provided. When the suction pad 7 that has sucked the insert metal 10 held by the holding portion 6 is lifted by the elevating device 8 or through the through hole formed in the holding portion of the feeding device 6, the lower surface of the insert metal 10 is sucked by the suction pad. If the pressure measured by this pressure sensor is higher than the specified pressure when adsorbing and sending It is preferred that an alarm device is provided which emits an alarm missing.

Reference numeral 9 is a trolley for feeding a metal plate 11 positioned below the suction pad 7 in a predetermined direction, and the metal plate 11 on which the insert metal 10 is mounted is provided in the feeding feeder 1. When it has a plate width wider than the width, it is installed so as to be movable in both the length direction and the width direction of the metal plate 11. Here, when the metal plate 11 has a width substantially equal to the width of the feeding feeder 1, the carriage 9 is installed so as to be movable only in the direction orthogonal to the arrangement direction of the suction pads 7. Just go.

[0015]

With the insert metal supply device according to the present invention having the above-described structure, the insert metal 10 is attached to the metal plate.
In order to feed onto the upper part 11, first, the insert metal 10 is sprinkled on the upstream side of the feeding feeder 1 from the feeding feeder 5. At this time, the feeding feeder 1 in which the guide groove 1b is installed in a state where the downstream side is inclined is given a vibration with a fine amplitude by the vibration applying device 2, and the insert metal 10 is formed into a substantially disc shape. Therefore, the sprinkled insert metal 10 is guided to the downstream side along the guide groove 1b of the feeding feeder 1. The insert metal 10 is usually piled up or standing upright on the upstream side to form a clumped state, but is guided to the downstream side in the guide groove 1b of the feeding feeder 1 while being given a vibration with a fine amplitude. As it goes, it is sent.

At this time, the feeding feeder 1 has a step formed in the middle of the guide groove 1b with the downstream side lowered in the feeding direction of the insert metal 10, and the trough 1a located at the most upstream side.
The number of rows of the guide grooves 1b of the troughs 1ab and 1ac remaining is twice as many as the number of rows of the guide grooves 1b of a, and the bottom of the V-shaped guide groove 1b of the trough 1aa located at the most upstream side. When the position of and the position of the top of the mountain portion of the guide groove 1b of the intermediate trough 1ab subsequent thereto are installed corresponding to each other in the stepped portion, as the insert metal 10 scattered on the upstream side goes to the downstream side. It is possible to surely disperse them in each guide groove 1b almost uniformly. If a slit 1c having a width smaller than the minimum diameter of the insert metal 10 is formed in the bottom of the guide groove 1b of the feeding feeder 1, the dust and the like that have moved with the movement of the insert metal 10 are removed. can do.

The insert metal 10 thus guided to the downstream side of the guide groove 1b of the feeding feeder 1 is aligned and held in a predetermined state by the aligning and holding mechanism 3. That is, as shown in the illustrated embodiment, the alignment holding mechanism 3 has a lower surface above the guide groove 1b of the feeding feeder 1 and a bottom surface of the guide groove 1b at a position lower than twice the plate thickness of the insert metal 10 by a factor of 1. The cover 3a is installed so as to be able to form an interval of more than about 1 and a half, and the trough 1ac located on the most downstream side is the guide groove 1 on the upstream side of the upstream end of the cover 3a.
b is bent and insert metal 1 of this part
If a side wall is not formed on the side opposite to the side wall to guide 0 and a relatively large through hole 3b is formed continuously with the guide groove 1b, the insert metal that has been guided in a predetermined state. 10 is a bent portion of the guide groove 1b and is guided further downstream while being in contact with one side wall, and the insert metal 10 that has been guided in a non-predetermined state is in an unstable state, so a through hole The insert metal 10 that has dropped from 3b or that has been guided further downstream by overlapping the insert metal 10 in a predetermined state hits the upstream end of the cover 3a, is displaced from the guide groove 1b, and passes through the through hole 3b. Falls down. Therefore, at least at a position below the position where the cover 3a is installed and where it reaches an appropriate distance on the upstream side from the most downstream position, the insert metal 10 is in a predetermined state in the guide groove 1b.
Are held in line.

Insert metal 10 dropped from through hole 3b
Is supplied onto the conveyor or trough 4a of the transport mechanism 4 installed below the through hole 3b, and is transported to the conveyor or conveyor 4b installed downstream of the trough 4a. Is conveyed to the supply feeder 5.

The inserter metal 10 guided by the guide grooves 1b of the feeding feeder 1 and guided to the most downstream side is held by each holding portion formed on the holding member 6a of the feeding device 6. Then, the holding member 6a is projected by the piston rod of the hydraulic cylinder or the air cylinder 6b to the standby position where the suction pad 7 is waiting upward, and the suction pad 7 lowered by the elevating device 8 causes the feeding device 6 to project. The insert metal 10 held by the holding portion of the holding member 6a is sucked, the lifting pad 8 raises the suction pad 7, and the holding member 6a is retracted. At this time, a circular recess having a shallower depth than the plate thickness of the insert metal 10 is formed at the end of the holding member 6a of the holding unit of the feeding device 6 on the feeding feeder 1 side, or each holding member 6a has a depth of 1.
A through hole is formed at a position where only one insert metal 10 is placed and at a position of the holding member 6a corresponding to each guide groove 1b of the feeding feeder 1 so that the insert metal 10 is attracted by vacuum pressure. If a suction pad is configured on the insert metal 10 when the holding member 6a is moved.
It is possible to reliably prevent the falling of the insert metal 10 and to define the insert metal 10 at an accurate position. Further, a pressure sensor for detecting the vacuum pressure of the suction pad 7 or a pressure sensor for detecting the vacuum pressure of the suction pad for sucking the lower surface of the insert metal 10 at the holding portion of the feeding device 6 is installed, and this pressure is also provided. If an alarm device is provided that receives a signal when the measured pressure of the sensor is higher than a predetermined pressure and issues an alarm of lack of adsorption of the insert metal 10, the insert metal 10 is not adsorbed on all the adsorption pads 7 or is sent out. Insert metal 10 for each holding part of device 6
When is not held, the pressure sensor detects that the measured pressure of the pressure sensor is higher than the predetermined pressure and issues an alarm, so that it is possible to confirm that the insert metal 10 is missing.

A metal plate clamped to a carriage 9 is provided below the adsorption pad 7 which adsorbs the insert metal 10.
Position 11 at the predetermined position where the insert metal 10 is supplied.

While the holding member 6a of the feeding device 6 reciprocates as described above, the movement of the insert metal 10 guided to at least the downstream side of the guide groove 1b of the feeding feeder 1 is stopped. That is, for example, the movement of the insert metal 10 can be easily stopped by stopping the operation of the vibration applying device 2 to stop the vibration of the feeding feeder 1, and although not shown, the holding member 6a of the sending device 6 is not shown.
If a stopper is provided which projects at a position corresponding to each guide groove 1b at the downstream end of the feeding feeder 1 only during the reciprocating movement, the movement of the insert metal 10 guided to the most downstream side by this stopper is prevented. In the stopped state, the insert metal 10 in each guide groove 1b of the feeding feeder 1 is constantly pressed against the insert metal 10 on the downstream side to stop its movement, so that the holding member 6a of the feeding device 6 is retracted. Insert metal 10 guided on the most downstream side when the stopped state of insert metal 10 by the stopper is released
Is quickly and reliably held by the holding member 6a of the feeding device 6.

Then, the cylinder 8d of the elevating device 8 is actuated to move the suction pad 7 which sucks the insert metal 10 to the metal plate on which the insert metal 10 is clamped on the carriage 9.
It is lowered until it comes into contact with 11, the suction state of the suction pad 7 is released, and the insert metal 10 is placed on the metal plate 11 and supplied. Next, the suction pad 7, which has been released from the suction state, is raised to the standby position by the cylinder 8d of the elevating device 8 and stands by.

Next, the carriage 9 is moved to move the metal plate 11 to a predetermined position where the insert metal 10 should be supplied. Insert metal 10 is used for metal plate 11
The process is repeated until it is supplied almost uniformly over the entire surface. Here, when the plate width of the metal plate 11 is twice or more an integral multiple of the width of the feeding feeder 1, the entire width of the metal plate 11 is set in the width direction of the feeding feeder 1 for each operation. The metal plate 11 is sequentially moved through the carriage 9 until the insert metal 10 is supplied, and then the metal plate 11 is predetermined through the carriage 9 by the hydraulic cylinder 9b in a direction orthogonal to the width direction of the feeding feeder 1. And the insert metal 10 over the entire width of the metal plate 11 at this position as described above.
It is sufficient to repeat the work of sequentially moving the metal plate 11 through the carriage 9 in the width direction of the feeding feeder 1 so that the metal sheet 11 is fed to the width of the feeding feeder 1.
If the plate width of the insert metal 10 is almost the same, the work of moving the metal plate 11 by a predetermined distance via the carriage 9 only in the direction orthogonal to the width direction of the feeding feeder 1 by the hydraulic cylinder is performed. It suffices to perform it for each work to be supplied.

[0024]

As described above in detail, the insert metal feeding apparatus according to the present invention is very efficient because it can feed a plurality of insert metals onto the metal plate by one lifting and lowering of the suction pad. Therefore, the productivity of the composite type vibration damping metal plate can be greatly improved. The insert metal can be supplied in a uniform distribution state on the metal plate because the spacing of the metal plate in the plate width direction is determined by the guide groove of the feeding feeder, and the composite vibration suppressor with uniform and stable quality. A metal plate can be manufactured. Further, since a series of operations for supplying the insert metal onto the metal plate can be eliminated by manpower, automation can be realized. Furthermore, if a pressure sensor that detects the vacuum pressure of the suction pad is installed and an alarm device that receives a signal from this pressure sensor and issues an alarm, it is possible to confirm the lack of insert metal, so it is more reliable. The insert metal can be supplied onto the metal plate in a uniform distribution state. As described above, the insert metal supply device according to the present invention which exhibits various effects has a great industrial value.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of one embodiment of an insert metal supply device according to the present invention.

FIG. 2 is a schematic plan view of FIG.

3 is a partially enlarged explanatory view taken along the line AA in FIG.

FIG. 4 is a perspective view showing an example of a feeding feeder 1 having guide grooves formed therein.

[Explanation of symbols]

 1 Feeding feeder 1a Trough group 1aa Trough installed on the most upstream side 1ab Middle trough 1ac Trough installed on the most downstream side 1b Guide groove 1c Slit 2 Vibration imparting device 3 Alignment holding mechanism 3a Cover 3b Through hole 4 Transport mechanism 4a Conveyor or trough 4b Conveyor 5 Supply feeder 6 Feeding device 6a Holding member 6b Cylinder 7 Suction pad 8 Lifting device 8a Support material 8b Cylinder 8c Support member 8d Cylinder 9 Cart 10 Insert metal 11 Metal plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Higo 11-1 Showamachi, Kure City, Hiroshima Prefecture Nisshin Steel Co., Ltd. Steel Research Laboratory

Claims (4)

[Claims] 1. A feeding feeder (1) in which a plurality of rows of guide grooves (1b) slightly wider than the maximum diameter of a substantially disc-shaped insert metal (10) are formed at equal intervals in the width direction and lower on the downstream side. 1)
And a vibration imparting device (2) for imparting vibration to the feeding feeder (1) to move the insert metal (10) to the downstream side along the guide groove (1b), and a downstream of the feeding feeder (1). Alignment holding mechanism (3) for holding each insert metal (10) provided on the side and guided by the feeding feeder (1) in alignment
And insert metal (10) on the upstream side of the feeding feeder (1).
Feeding feeder (5) for spreading and feeding feeder (1)
Of the insert metal (1b) guided in each guide groove (1b)
A feeding device in which a holding member (6a) having a holding portion for holding (0) is formed corresponding to each guide groove (1b) is reciprocally installed at the downstream end of the feeding feeder (1). (6)
And the holding member (6a) of the feeding device (6) is movably installed by a lifting device (8) at a position corresponding to each holding part at the position where the holding member (6a) is most protruded. Adsorption pads (7) for adsorbing simultaneously the insert metals (10) held by and the dolly for moving the metal plate (11) supplied with the insert metal (10) below the adsorption pads (7). (9) An insert metal supply device comprising: 2. The feeding feeder (1) is an insert metal (1).
It consists of a group of troughs (1a) composed of multiple troughs (1aa, 1ab, 1ac) in the feed direction of (0), and between each trough (1aa and 1a
b), between 1ab and 1ac), the trough (1a
The insert metal supply device according to claim 1, wherein the guide groove (1b) of (b, 1ac) is installed in a state in which a step difference lower than that of the guide groove (1b) of the upstream trough (1aa, 1ab) is formed. 3. An alignment holding mechanism (3) is installed above each guide groove (1b) of the feeding feeder (1), and the lower surface thereof and the bottom surface of the guide groove (1b) of the feeding feeder (1). Insert metal (1
The cover (3a) that forms a gap that is less than twice the plate thickness of (0) and more than one time, and on the guide groove (1b) of the feeding feeder (1) on the upstream side of the upstream end of this cover (3a). Insert metal (10) that has been drilled adjacently and has been excessively guided in the guide groove (1b)
It has a through hole (3b) for dropping and removing the insert metal, and a transfer mechanism (4) for transferring the insert metal (10) dropped and removed from the through hole (3b) to the supply feeder (5) is installed. The insert metal supply device according to claim 1 or 2. 4. The insert metal (10) of the suction pad (7)
A pressure sensor that detects the vacuum pressure during adsorption is installed, and the adsorption pad (7) that adsorbs the insert metal (10) held by the holding part of the delivery device (6) is a lifting device.
An alarm device is provided, which receives a signal when the pressure measured by the pressure sensor is higher than a predetermined pressure when the pressure is raised by (8), and issues an alarm of lack of adsorption of the insert metal (10). The insert metal supply device according to any one of 3 to 3.