JPH0242108Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a seed feeding device in a shiitake mushroom seeding machine, more specifically, a seed piece feeder for shiitake mushrooms that is supplied from a seed supply unit and formed on logs. The present invention relates to a piece driving device for driving pieces into prepared holes, and a seed piece feeding device for quickly and reliably feeding seed pieces supplied from a seed piece supply section.

(Prior art) When shiitake fungi are implanted into logs, conventionally this is done manually by forming a pilot hole in the log and then driving seed pieces, in which the shiitake fungus has been implanted in advance, into the pilot hole one by one with a hammer or the like. ing. However, since this does not speed up the work, it has been proposed to use a tool to drive the seed piece into the pilot hole. Such a tool, such as the screw tightening machine shown in Japanese Patent Publication No. 46-18238, connects a piece driving machine and a seed piece supply section with a seed piece feeding pipe, and a piece is supplied from the seed piece supply section. A piece striking machine that shoots out seed pieces is considered. However, in the screw tightening machine, an escape section connected to a screw feeder moves one screw within a pipe using compressed air pressure based on a screw tightening end signal in the screw tightening tool section. Since the structure is such that it is fed to the tip of the piece, if you try to apply it as is to a piece striking machine, the feeding operation of the next seed piece will start only after one seed piece has been struck by the piece striking machine. Therefore, the following problem arises. In other words, if the distance between the seed piece supply unit and the piece driving machine becomes large, it will take too much time for the next seed piece to pass through the pipe and reach the tip of the piece hammer after one seed piece has been driven out. There is a risk that work efficiency will decrease. In particular, this tendency is especially strong in the case of seed pieces because of the large resistance they face when moving through the pipe.

(Technical Problems of the Invention) The present invention solves the above problems and, after completing the striking of one seed piece, the piece striking machine quickly and reliably moves the next seed piece without increasing air consumption. The technical problem is to provide a seed feeding device for a shiitake mushroom seeding machine that can feed the seeds to the tip of the main body.

(Means for Solving the Problems) In order to solve the above problems, the seed piece feeding device according to the present invention includes a cylinder that accommodates a piston so as to be able to reciprocate, and a driver member for driving pieces that is integrally connected to the piston. , a punching passage provided in the axial front of the driver member to slidably accommodate the driver member and loading shiitake mushroom seed pieces at the tip thereof; and compressed air is introduced into the cylinder to operate the driver member. and a control valve provided between a compressed air supply source and the cylinder and the exhaust passage to exhaust the compressed air in the cylinder from the exhaust passage after operation to perform a return process of the driver member. In a piece driving machine for shiitake mushroom seeds, a seed supply passage for supplying shiitake mushroom seeds one by one is opened in the punching passage of the piece driving machine, and an exhaust port of compressed air in the cylinder is connected to the seed supply passage. It is characterized by opening inside toward the seed piece supply direction.

(Operations and Effects of the Invention) As described above, according to the present invention, when compressed air is introduced into the cylinder of the piece striking machine by the control valve and the driver member is operated together with the piston, the seed pieces in the punching passage are is hammered out toward the outside (the pilot hole in the log). Next, during the return process of the driver member, the compressed air in the cylinder is exhausted from the piece striking machine into the seed piece supply path in the direction of the seed piece supply. Therefore, if the next seed piece is sent into the seed piece supply path before the return process of the piston and is lightly locked in the middle of the supply path, the seed piece will be absorbed by the exhausted compressed air. After the driver member is sent out to the tip of the punching path and the driver member returns, the next seed piece can be quickly punched out. Therefore, even if the seed piece supply path is long, the seed pieces can be quickly sent to the punching path of the piece hitting machine. Moreover, since the exhaust pressure is used to operate the driver member, the pressure is high, and the seed piece can be reliably sent to the tip of the punching path. Furthermore, since the seed piece feeding uses exhaust air, compressed air is not wasted. Therefore, the practical effects of the present invention are very large.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral A indicates a shiitake mushroom seeding machine. This piece-hitting machine A includes a cylinder 2 that reciprocally accommodates a piston 1, a driver member 3 for playing pieces that is integrally connected to the piston 1, and a driver that is provided in front of the driver member 3 in the axial direction. Part 3
A punching passage 5 which slidably accommodates a shiitake mushroom seed piece 4 and loads a shiitake mushroom seed piece 4 at its tip; compressed air is introduced into the cylinder 2 to operate the driver member 3; A control valve 6 for discharging the gas from the exhaust passage to perform a return process of the driver member 3, and an operation valve mechanism 7 for operating the control valve 6 are provided.

The control valve 6 is provided between the cylinder 2, an exhaust passage 8 formed at the rear of the cylinder 2, and a compressed air storage chamber 9 communicating with a compressed air supply source (not shown) such as an air compressor. The opening 11 between the cylinder 2 and the compressed air storage chamber 9 is constantly closed by the air pressure acting on the surface and the spring pressure of the spring 10, and the opening 1 is closed against the air pressure and the spring pressure.
1. When moved to the open position, its rear tip 6
a is configured to press against the seal portion 12 and close the exhaust passage 8. Furthermore, the supply of air pressure to the rear surface of the control valve 6 is controlled by an operating valve mechanism 7. The operation valve mechanism 7 includes a trigger valve 14 that selectively connects the air passage 13 that supplies the rear surface of the control valve 6 to the compressed air storage chamber 9 or the atmosphere, and a trigger lever 15 that operates the trigger valve 14 to open or close. has been done.

Next, a seed piece supply passage 16 is opened at the tip of the punching passage 5 of the piece driving machine A. This seed piece supply path 16 is connected to a seed piece supply device (not shown),
The seed pieces 4 are supplied one by one from the supply device. Then, the seed piece supply path 16
There is an exhaust passage 8 for the compressed air inside the cylinder 2.
is opened toward the seed piece supply direction.

It is preferable to provide an engaging means 17 in the middle of the seed piece supply path 16 for elastically engaging the seed pieces 4 sent from the seed piece supply device using a spring or the like. In this case, an air escape hole 30 is provided in the seed piece supply path 16.

Next, two holding members 20, 20 are disposed facing each other on the circumferential surface of the tip end of the punching passage 5. The holding member 20 has a substantially middle portion supported in the punching passage 5 by a shaft 21, a rear end 20a is urged away from the punching passage 5 by a spring 22, and a tip 20b is It is configured to protrude forward from the tip of the punching passage 5 and to protrude inwardly from the inner surface of the punching passage 5, and furthermore, the tip 20
A tapered receiving surface 23 that substantially matches the taper 4a of the seed piece 4 is formed inside b. As a result, the seed pieces 4 supplied to the tip of the punching passage 5 are
The tip is held by the holding members 20, 20 with the tip protruding from the tip of the punching passage 5 by a predetermined length. At this time, the tapered receiving surface 23 of the holding member 20 and the seed piece 4
The seed piece 4 is held stably because it almost coincides with the tapered surface 4a. Furthermore, even if the seed pieces 4 have different lengths, they have the same taper angle, so they can be stably held regardless of their length. Note that three or more holding members may be arranged on the circumferential surface of the punching passage 5.

Further, the above-mentioned holding member 2 is provided inside the punching passage 5.
A detent pawl member 24 is provided which engages with the rear end of the seed piece 4 held by the screws 0 and 20. The rear end 24a of this detent claw member 24 also has a spring 25.
The distal end engaging portion 26 is urged away from the ejection passage 5 by the
It is formed so as to protrude into the interior and engage with the rear end of the seed piece 4.

Note that the holding member 20 and the claw member 24 each have abutting portions 20 that abut against the outer surface of the punching passage 5.
c and 24b so as not to protrude into the movement range of the driver member 3.

Next, the operating mode of the piece striking machine A having the above configuration will be explained.

First, when the seed piece 4 is supplied from the seed piece supply section through the seed piece supply path 16 into the punching passage 5, the seed piece 4 is stably held by the holding members 20, 20, and its rear end is attached to the claw member 24. engaged. At this time, since the tip of the seed piece 4 protrudes by a predetermined length from the tip of the punching passage 5, it can be easily positioned in the prepared hole 29 of the log 28. Thereafter, by pulling the trigger lever 15 and operating the trigger valve 14, the air passage 13 is opened to the atmosphere, and the compressed air acting on the rear surface of the control valve 6 is released to the atmosphere, so that the front end of the control valve 6 The control valve 6 moves back due to the air pressure of the compressed air that was acting on the circumferential surface, and the exhaust passage 8
, and open the opening 11. As a result, the compressed air in the compressed air storage chamber 9 is introduced into the cylinder 2 through the opening 11, drives the piston 1 and the driver member 3, and drives the tip holding members 20, 20 of the punching passage 5.
The seed piece 4 held by the seed piece 4 is driven into the pilot hole 29 of the log 28. At this time, the holding member 20 and the claw member 24 each have contact portions 2 that contact the outer surface of the punching passage 5.
6 and 27 so as not to protrude into the movement range of the driver member 3, the members 20 and 24 will not be damaged by hitting the driver member 3.

When the trigger lever 15 is released after the driving is completed, the trigger valve 14 connects the compressed air storage chamber 9 to the air passage, so the compressed air acts on the rear surface of the control valve 6 and causes the control valve 6 to open the opening 11 again. Close it and return it to the position where the exhaust passage 8 is opened. Therefore, the piston 1 switches to the return stroke, and the compressed air introduced into the cylinder 2 is exhausted from the exhaust passage 8. By the way, since the end of the exhaust passage 8 is opened toward the seed piece supply direction, the seed piece supply device is operated to supply the seed piece 4 to the middle of the seed piece supply path 16 before the return stroke of the piston 1. If you do,
By blowing in the exhausted compressed air, the seed pieces 4 in the seed piece supply path 16 are delivered to the seed piece holding portion at the tip of the punching passage 5. Therefore, after the return process of the driver member 3, the next seed piece 4 can be quickly driven out. Moreover, since the exhaust pressure is used to operate the driver member 3, the pressure is high, and the seed piece 4 can be reliably sent to the tip of the punching passage 5. Furthermore, since the seed piece feeding uses exhaust air, compressed air is not wasted.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a shiitake mushroom seeding machine that includes a seed feeding device according to the present invention, and FIG. 2 is a sectional view taken along the line -- in FIG. Code, A... Piece striking machine, 1... Piston, 2...
Cylinder, 3...Driver member, 4...Shiitake mushroom seed piece, 5...Ejection passage, 6...Control valve, 7...
...Operation valve mechanism, 8...Exhaust passage, 9...Compressed air storage chamber, 13...Air passage, 16...Seed piece supply path.

Claims (1)

[Scope of utility model registration request] a cylinder that reciprocably accommodates a piston;
a driver member for driving pieces integrally connected to the piston; a punching passage provided in front of the driver member in the axial direction for slidably housing the driver member and loading a shiitake mushroom seed piece at the tip; Compressed air is introduced into the cylinder to operate the driver member, and after operation, the compressed air in the cylinder is exhausted from the exhaust passage to perform the return process of the driver member. A seed-driving machine for shiitake mushroom seeds, which has a control valve provided between the cylinder and the passage, opens a seed supply passage for supplying shiitake mushroom seeds one by one into the driving passage of the piece-driving machine, and a control valve provided between the cylinder and the cylinder. A seed feeding device for a shiitake mushroom seeding machine, characterized in that an exhaust port for compressed air inside the seed feeding path is opened in the seed feeding direction in the seed feeding direction.