JPS5937063B2 - "Su" extraction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screen removal device that grips and takes out screens one by one from stacked screen layers, and is particularly suitable for use in removing screens with seaweed attached after papermaking and dewatering. It is valid.

With conventional equipment for removing the cages with seaweed attached,
The hook is pressed against the basket and inserted between the tribute rods, and tension is applied to the basket to stretch it and hold it tightly. It slides into contact with the lower screen, damaging the seaweed attached to this lower screen, and when the screen is lifted, the screen is suddenly pulled apart in a flat state, so as the screen is lifted, a suction force is generated below it. As a result, the seaweed adhering to the lower screen may peel off or the surface of the seaweed may become rough, resulting in a loss of product value, making it impossible to put it to practical use.

In addition, as mentioned above, the hook is held by pressing the hook against the screen and inserting it between the tribute rods, so when the hook is held, the hook hits the tribute rod and the hook is closed. It has the drawback that it can easily cause accidents in which it does not get into the space between the tributaries and makes it easy to grasp it incorrectly.

Therefore, the present invention aims to eliminate the above drawbacks,
When pressing the hook against the basket and inserting it between the tribute rods, vibration is applied to the hook to ensure that the hook can be inserted between the tribute rods. An object of the present invention is to provide a screen removal device in which hooking claws gripping both ends of the screen are placed close to each other so as to pull the screen over so as to lift the screen, and the screen can be reliably taken out without damaging the seaweed. It is something to do.

Next, embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a rotating shaft rotatably supported on a machine frame 2, which is rotated at a constant speed in the direction of the arrow by a drive motor (not shown) via a wheel 3, a chain wheel 4, etc.

Reference numeral 5 designates a pivot shaft rotatably supported on the machine frame 2, and a swing arm 6 is fixed to one end of the pivot shaft 5. are connected by pins.

Reference numerals 9 and 9a denote a pair of left and right support arms whose intermediate portions are rotatably fitted into both ends of the pivot shaft 5, and the lower ends of each support arm are fixed to both ends of a connecting frame 10 having a U-shaped cross section. Upper end (tip)
Both ends of a support shaft 11 for supporting a screen removal frame to be described later are fixed to the frame.

The tip of an arm 12 fixed to the pivot 5 faces between the side plates 10a and 10b of the connecting frame 10, and the arm 12 is connected to one side plate 10a by the elastic force of a spring 13 interposed between the two side plates 10a and 10b. When the rotary shaft 1 rotates and the pivot shaft 5 is rotated by a predetermined angle, this amount of rotation is transferred to the support arm 9 via the arm 12, the spring 13, and the connecting frame 10. , 9a, thereby supporting arm 9.
9a swings as shown in FIG. 1 to move the screen removal frame to the screen gripping position A and the screen opening position B.
When the claw device to be described later comes into contact with the upper surface of the screen and the clockwise swinging of the support arms 9, 9a in FIG. 1 is stopped, the arm 12 compresses the spring 13, and the support arms 9, 9a This is done so that the oscillations are not forced to swing any further.

Reference numeral 16 denotes a screen removal frame body, and both side plates 16a and 16b are rotatably attached to the support shaft 11.

17 is a support shaft 1 attached to one side plate 16b of the screen removal frame 16.
1 is a rotating wheel fixed to be concentric with 1; 18 is a supporting arm 9;
, 9a is fixed to the machine frame 2 so as to be concentric with the pivot 5 by being loosely fitted to the pivot 5. A fixed ring 19 has approximately the same diameter as the rotating wheel 17, and the fixed ring 19 connects both ends of the steel belt 20 to the spring 2.
This endless cable 19 is suspended between the rotary wheel 17 and the fixed ring 18, and is connected to the cage removal frame 16.
is fixed to a predetermined position on the outer periphery of the rotary wheel 17 and the fixed ring 18 so as not to slip, with the upper plate 16c set in a substantially horizontal position.

Therefore, since the steel belt 20 is constantly tensioned by the spring 21, the rotation of the screen removal frame 16 around the support shaft 11 is restricted, and even if the support arms 9, 9a swing, its posture hardly changes. It is retained without any problem.

In addition, when it is desired to make the posture of the screen removal frame 16 different between the screen gripping position A and the screen release position B, the rotating wheel 17 and the fixed ring 18 are used.
All you have to do is change the diameter appropriately.

Further, a chain wheel may be used as the rotating wheel 17 and the fixed ring 18, and a chain wheel may be used as the endless cable 19.

Furthermore, the attitude of the screen removal frame 16 may be maintained using a cam groove.

The support arm 9.9a, the endless cable 19, etc. shown above constitute a moving mechanism 22 that moves the screen removal frame 16 between the screen gripping position A and the screen opening position B.

Next, reference numerals 23.23a denote a pair of left and right claw holders pivotally supported on pivot bolts 24.24a installed in the upper plate 16c of the screen removal frame 16 so as to be able to swing in a substantially horizontal direction. Claw devices 25, 25e are installed at the front end of the holder as follows.

These claw devices 25, 25e have substantially the same configuration except that the left and right sides are reversed, so only one of the claw devices 25 will be explained below, and the corresponding parts of the other claw device 25e will be explained. The alphabet e is attached to the same reference numerals and redundant explanation will be omitted.

A cylindrical body 26 is fitted and fixed to the claw holder 23, and has a vertical fitting hole 26a.

Reference numeral 27 denotes a claw rod that is fitted into the fitting hole 26a of the cylindrical body 26 so as to be vertically and rotationally movable, and a hooking claw 28 is formed at the lower end.

As shown in FIG. 5, this hooking claw 28 has a ginkgo leaf-like shape with an arcuate tip at the tip and grooves on both sides into which only one of the tribute rods 29a of the screen 29 can fit, as shown in FIG. The shape is stylized.

Reference numeral 31 denotes a locking tool fixed to the upper end of the claw rod 27, and a return arm 32 is provided protruding from the side surface.

33 is a spring receiver fixed to the middle of the claw rod 27; 34
is a spring that is compressed and interposed between the spring holder 33 and the lower surface of the pawl holder 23, and the pawl rod 21 is urged downward by the elastic force of this spring 34, and the pawl rod 21 is urged downward by the resiliency of the spring holder 33 and the bottom surface of the pawl holder 23. Location is restricted.

35 is a fitting hole 36a provided in the upper wall 35a and the lower wall 35b as shown in FIG.

36b is a pawl insertion confirmation member that is vertically slidably fitted to the lower end of the pawl rod 27, and a locking pin 37 is provided on the side wall 35c to protrude toward the pawl rod 27.

In this embodiment, the locking pin 37 is provided at the tip of a screw shaft 39 that is screwed into the side wall 35c and fixed with a fixing nut 38.

A guide roller 40 is rotatably attached to the rear end of the screw shaft 39, and is fitted into the vertical guide groove 41a of the guide plate 41 fixed downward to the lower surface of the claw holder 23 to confirm the insertion of the claw. Rotation of the member 35 around the pawl rod 27 is restricted.

42 is the upper wall 35 of the pawl insertion confirmation member 35 that fits into the pawl rod 27
Attach the claw rod 2 with the fixing screw 43 between a and the lower wall 35b.
7, and a claw rod 21 is provided on the side surface of the upper end at a position where it can be engaged with the locking pin 37, as shown in FIG.
The first stage and second stage engaging step portions 42a have phase angles around the same that differ by approximately 90 degrees.

42b is formed in a step-like shape.

44 is a lower wall 35 of the rotation regulating piece 42 and the claw insertion confirmation member 35
The nail insertion confirmation member 3 is a torsion spring compressed and interposed between
5 downward, and the rotation regulating piece 42 is pushed downward.
The locking pin 37 is biased to rotate clockwise in the figure, and normally the first engagement step 42a of the rotation regulating piece 42 is pressed against the locking pin 37.
The lower end of the claw insertion confirmation member 35 is located below at least the hook portion 30 of the hook 28 as shown in FIGS. 3 and 5, and the direction of the hook 28 is parallel to the tribute rod 29a. The height position of the pawl insertion confirmation member 35 and the pawl rod 27 are
The claw insertion confirmation member 35 controls the rotational position of the cage 29.
and is pushed up against the elastic force of the torsion spring 44,
When its lower end is positioned above the hook portion 30 of the hook 28, the engagement step portion 42a of the rotation regulating piece 42 is disengaged from the locking pin 37, thereby causing the hook rod 27 to rotate approximately 90 degrees. Then, the second retaining stepped portion 42b engages with the hooking pawl 28.
The direction of the tributary rod 29a is substantially perpendicular to the tributary rod 29a.

The lower end of the claw insertion confirmation member 35 is formed into a conical shape so as to come into contact only with the tribute rod 29a in a portion near the insertion position of the hooking claw 28.

Reference numeral 45 denotes a reversal stopper attached to the machine frame 2 and positioned at a predetermined position of the cage opening position B, which receives the return arm 32 attached to the upper part of the claw rod 27 as the support arms 9, 9a swing, and rotates the claw. The rod 27 is rotated counterclockwise in FIG.
The claw insertion confirmation member 3 has come off the second retaining step 42b.
5 protrudes downward and returns to its original position.

Next, reference numeral 46 denotes a screen detecting device that detects that the screen 29 is in the screen holding position when gripping the screen 29 and releases the lifting of the claw rod 27, which is constructed as follows.

That is, 47 is an elongated hook groove 47a formed at both ends,
47b are fitted near the upper ends of the claw rods 27 and 27e, respectively, to pull up plates, and a detachment prevention pin 48, 48a is fixed to the upper surface.

Reference numeral 49 denotes a pawl rod holding arm that lifts and holds the pawl rod 27.27e via the lifting plate 47, and is rotatably supported on a support bracket 50.50a fixed to the upper plate 16a of the screen removal frame 16. A horizontal shaft 51, and a pair of lifting arms 52, 52a fixed to both ends of the horizontal shaft 51, projecting forward, and entering under the lifting plate 47 on both outsides of the detachment prevention pins 48, 48a. and an engaging arm 53 fixed to the intermediate portion of the horizontal shaft 51 and projecting downward.

The distal end of this engaging arm 53 has a search bar 56 on one side.
An engaging pin 54 (retaining portion) that engages with the locking protrusion 60 is implanted, and an engaging roller 55 is rotatably attached to the other side.

Reference numeral 56 denotes a cage detection bar that locks and holds the claw rod holding arm 49 in a lifted state and releases this locking when the cage is located at a position where the cage can be gripped. A horizontal shaft 58 rotatably supported by fixed support brackets 57, 5γa, a pair of cage rods 59, 59a fixed to both ends of this horizontal shaft 58 and projected forward, and It is fixed to the middle part and protrudes rearward, and an engagement pin 5 is attached to the upper surface of the tip part.
A locking rod 6 provided with a locking protrusion 60 (locking portion) for locking 4.
It consists of 1.

This search rod 56 is biased clockwise in FIG. 3 by its own weight or a spring (not shown), and normally the locking protrusion 60 of the locking rod 61 is attached to the claw rod holding arm as shown by the imaginary line. 4
9 engages with the engagement pin 54 of 9 to restrict the clockwise rotation of the pawl rod holding arm 49 in FIG.
7e is held in a state where it is lifted by a predetermined amount L1 against the spring 34, and the ends of the suction rods 59, 59a are connected to the hooking claws 28.2.
It is located an appropriate amount below the lower end of 8e.

Then, when the screen removal frame 16 is moved close to the screen 29 to be entertained and the screen search rod 56 comes into contact with the upper surface of the screen 29 and is rotated counterclockwise in FIG. 3, the screen search rod 56 is locked. The protrusion 60 and the engagement pin 54 of the pawl rod holding arm 49 are disengaged, and the pawl rod holding arm 49 releases lifting of the pawl rods 27, 27e.
The claw rods 27, 27e and springs 34, 34e protrude downward and come into contact with the cage 29.

Reference numeral 62 denotes a return cam for returning the pawl rod holding arm 49 to the lifted state, and is fixed to the support shaft 11 so as to correspond to the engagement roller 55 of the engagement arm 53.

This return cam 62 receives the engagement roller 55 when the engagement pin 54 is disengaged from the locking protrusion 60 and restricts the rotation of the pawl rod holding arm 49, and thereafter the post-retrieval frame 16 moves to the cage open position. The pawl rod holding arm 49 is moved in the lifting direction (third direction).
It is formed so that it can be swung back in the counterclockwise direction (in the figure).

Next, when lifting the screen 29 with the hooking claws 28.28e, the claw devices 25 and 25e of the claw holder 23.23a are brought close to each other by an appropriate amount, and after lifting the screen 29 from both sides, they are separated. It is a screen turning device that allows you to return to the previous state.
It is structured as follows.

That is, 64.64a is a pair of cam followers consisting of pins fixed to the claw holder 23.23a so as to protrude toward the support shaft 11, and 65.65a is a pair of cam followers 64.
．． A pair of swinging cams are fixed to the support shaft 11 at both outer sides of the swinging cams 64a, and a cam surface 66.66a is formed on the side surface of the swinging cam 65.65a on the side of the cam follower 64.64a.
are respectively formed, and the cam followers 64, 64a are pressed against these cam surfaces 66, 66a by springs 67 stretched between the pawl holders 23 and 23a.

The cam surface 66.66a has one V groove 68 at a predetermined position.
．． 68a are formed, and when the hooking claws 28, 28e begin to lift the cage 29 as the support arm 9°9a swings, the cam followers 64.64a fit into these grooves 68.68a, thereby holding the claws. The body 23.23a swings to bring the pawl devices 25.25a close to each other, and then, after the cage 29 has been completely or largely lifted, the cam followers 64, 64
a is pulled out from the V grooves 68, 68a and the claw device 25°25
e toward the original position and away from each other.

In addition, the pivot bolt 24.24a of the claw holder 23.23a
is located behind the cam followers 64, 64a, the tensioning position of the spring 67 is behind the pivot bolt 24.24a, and the cam surface 66. of the swing cam 65.65a.
The pawl devices 25, 25e may be brought closer and separated by forming a convex portion in place of the V-groove 66a.

Next, 69 presses the hook 28 against the cage 29 and releases the tribute rod 29a.
This is a claw swinging device that swings the hooking claw 28 in a direction intersecting (preferably perpendicular to) the tributary rod 29a when it is pushed in between the two, and is configured as follows.

That is, reference numeral 70 and 70a are auxiliary arms that constitute a part of the claw holder 23.
is fixed downward.

Reference numeral 72 denotes a vibration shaft which is rotatably supported on the machine frame 2 so as to be located approximately directly below the abutment pins 71, 71a when the screen removal frame 16 is moved to the vicinity of the screen reception position A. 9
, 9a rotates once or several times (in this embodiment, once) through the chain wheel 73, chain 74, chain wheel 75, 76, chain 77, and chain wheel 78. is connected to.

79.79a is a pair of vibrating cams fixed at predetermined positions on the vibrating shaft 12, and the side surfaces thereof are provided with a large number of protrusions 80 in the normal direction,
A cam surface 81°81a having a diameter 80a is formed.

The protrusions 80, 80a of the cam surface 81.81a are formed by the hooking claws 28, 28 when the screen removal frame 16 is moved to the screen gripping position A.
From the time when e comes into contact with the screen 29, the abutment pin 71,
71a, the claw holders 23, 23a vibrate against the spring '6γ, and are disengaged before the screen 29 starts to be lifted.

It goes without saying that a drum cam having a meandering groove on the outer periphery may be used as the vibrating cam 79, 79a.

Reference numeral 82 denotes a cage transport conveyor disposed below the cage opening position B, which transports the cage 29 that is taken out and dropped to the left in FIG.

Reference numeral 83 denotes a laminated screen layer, which is pushed up by a predetermined amount by a mechanism (not shown) in connection with taking out the screen 29.

Next, the operation of the above configuration will be explained.

When the rotating shaft 1 is rotated in the direction of the arrow by the 1 drive motor,
The pivot 5 rotates by a predetermined angle via the crank 7, etc., and this rotation amount is transferred to the support arm 9 via the arm 12, the spring 13, and the connecting frame 10.
, 9a, and as a result, the supporting arms 9, 9a normally swing back and forth by a predetermined amount to move the screen removal frame 16 alternately between the screen gripping position A and the screen opening position B.

In this case, the screen removal frame 16 is connected to the rotary wheel 17 (!: fixed wheel 1
Even if the support arms 9 and 9a swing, the posture is maintained so that the posture does not change by the endless cable 19 suspended between the arms 8 and 8.
A support shaft 11 fixed to the support arms 9, 9a rotates relative to the screen removal frame 16 as the support arms 9, 9a swing.

That is, the support arms 9, 9a swing clockwise in FIG. 1, the support shaft 11 rotates clockwise with respect to the screen removal frame 16, and the support arms 9, 9a swing counterclockwise. Then spindle 1
1 rotates counterclockwise with respect to the screen removal frame 16, and the swing cam 65, 65a fixed to this support shaft 11 also rotates in the same manner.

Further, when the rotating shaft 1 rotates, the vibration shaft γ2 rotates in conjunction with this rotation, and the vibration cam 79 fixed to the vibration shaft 72 rotates.
rotates in the direction of the arrow.

As described above, when the screen removal frame 16 is moved downward toward the screen gripping position A near its swinging end, the screen contacting rods 59, 59a of the screen searching device 46 are first moved to the uppermost position of the screen layer 83. Screen 29
contact with the upper surfaces of both sides to which no seaweed is attached, preventing the support arms 9, 9a from descending as the support arms 9, 9a swing, and as the support arms 9, 9a swing, the rods 59, 59a move downward. Screen 2
9, and the search lever 56 is rotated counterclockwise in FIG.

Then, as the supporting arm 9°9a swings, the pawl rods 27, 27e
When the hooking pawls 28° 28e approach or come into contact with the upper surface of the screen 29, the screen searching rod 56 is rotated by a predetermined amount, and at this time, the locking protrusion 60 of the screen searching rod 56 and the pawl rod holding arm 4
9 is disengaged from the engagement pin 54, and as a result, the pawl holding arm 49 is free to rotate clockwise in FIGS. 1 and 3 until the engagement roller 55 comes into contact with the return cam 62. Both the pawl rods 27 and 27e are released from being lifted.

In this way, when the pawl rod holding arm 49 releases the lifting of the pawl rods 27.27e, the pawl rods 27.27e, which had been lifted by a predetermined amount L1 against the springs 34.degree.
4 and 34e, and in the middle of the protrusion, the lower end comes into elastic contact with the upper surface of both sides of the screen 29 located directly below, and as will be described later, the both sides of the screen 29 are pushed downward. grasp.

In this case, the pawl rods 27° 27e can protrude downward as much as possible within a range corresponding to the lifting amount L1 lifted by the pawl rod holding side 49, so that the pawl rods 27, 2
When the lifting of the gripper 7e is released when the lower end of at least one of the claw rods 27, 27e is positioned near the top surface of the screen, there is a difference of approximately L1 in the height of the top surface of both sides where the screen 29 is to be gripped. The lower ends of the claw rods 2γ and 27e elastically abut on the upper surfaces of both sides of the screen 29, respectively, and when the claw rods 27 and 2γe are lifted, the distance between the lower ends of the claw rods 27° and 27e and the upper surface of the screen 29 is still large. Even if this is done at a considerable number of times, if the interval is smaller than the lifting amount L1 of the pawl rods 27.27e, the pawl rods 27.27e will be moved even if there is a slight difference in the height of the upper surface of both sides of the screen 29 as described above. The lower end portions of the casing 29 resiliently abut against the upper surfaces of both sides of the screen 29, respectively.

This means that even if the heights of the upper surfaces of both sides of the screen 29 to be gripped are uneven, both sides of the screen 29 can be gripped reliably.

If the supporting arms 9, 9a have not yet reached the swinging end when the lower end of the claw rod 27, 27e comes into contact with the upper surface of the cage 29 as described above, the supporting arms 9, 9a will be The spring 34 which urges the pawl rods 27 and 27e as the lever 1 rotates thereafter.
, 34e, it swings and reaches the swing end.

In this case, since the uppermost screen 29 of the screen layer 83 is located at a higher position than the predetermined gripping position, the cylindrical bodies 26, 26e of the claw holders 23.degree. 27
, 27e to prevent the screen removal frame 16 from descending, the amount of subsequent rocking of the support arms 9, 9a due to the rotation of the rotating shaft 1 is determined by the amount of swinging of the support arms 9, 9a caused by the rotation of the rotating shaft 1. 13 is absorbed by compressing the supporting arms 9, 9a.
There is no risk of damaging the screen 29 or the seaweed due to forcible shaking.

Incidentally, if the distance between the cylindrical body 26° 26e and the spring receivers 33, 33e is increased, the spring 13 will not be compressed as described above.

Although not shown in the drawings, if a backing plate is fixed to the cage removal frame 16 so as to come into contact with the top surface of the cage 29 when the lifting of the claw rods 27° 27e is released, the support arms 9, 9a
The subsequent rocking is absorbed by the compression of the spring 13.

Next, when the lower end portions of the pawl rods 27, 27e are elastically abutted against the upper surfaces of both sides of the cage 29 as described above, the pawl rods 27, 27e
The hooking claw 28° 28e at the lower end of the hook 27e is shaped like a ginkgo leaf and its orientation is held parallel to the tribute rod 29a of the screen 29, and its cross-sectional shape is horizontal, so the hooking claw 28,
Unless the toe of hook 28a comes into contact with right above the tribute rod 29a of the cage 29 and interferes with it, the toe of the hook 28 slides between the tribute rods 29a and pushes the tribute rod 29a apart. It is surely inserted between the tribute rods 29a.

However, the claw insertion confirmation member 35 comes into contact with the upper surface of the bar 29a in the part where the hooking claw 28.28e is inserted and is prevented from descending, so that the hooking claw 28.
9a, the locking pin 37°37e fixed to the claw insertion confirmation member 35 and the first locking step 42a, 4 of the rotation regulating piece 42.42e fixed to the claw rod 27, 27e.
2ae is disengaged, and as a result, the second stage engagement step portions 42b, 42be of the pawl rods 27, 27e are disengaged from the locking pin 37.3.
7e, it is rotated by approximately 90 degrees in the direction of the arrow in FIG. 2 by the torsional force of the torsion spring 44[deg.] 44e.

As the pawl rods 27 and 27e rotate, the hooking pawls 28 and 28e inserted between the tributary rods 29a rotate approximately perpendicularly to the tributary rods 29a, as shown in FIGS. Hook 30.30 of claw 28.28e is the topmost screen 29
The hooks engage with the tribute rods 29a located on both sides of the screen 29 to grip both sides of the screen 29, respectively.

In this case, the size of the hook portion 30.30e is set so that one tribute rod 29a can fit therein, and the ends of the hook portions 28, 28e are formed in an arc shape, so that the hook portions 28, 28e have two pieces. There is no danger of gripping the tribute rod 29a, and the lower end of the hook 28.
There is no danger of it getting caught and twisted by 9a.

Also, the upper surface of the screen 29 gripped by the hooking claws 28, 28e is connected to the lower end of the claw rods 27, 27e and the claw insertion confirmation member 3.
The posture is maintained at the lower end of 5, 35e.

The above is a case where the hooking claws 28, 28e are inserted between the tribute rods 29a, but if the hooking claws 28, 28e interfere with the tribute rod 229a, the first stage engagement steps 42a, 42a
Since the engagement between the hook 28 and the locking pin 37.37e does not come off, the hook 28.degree. 28e is held parallel to the tributary rod 29a until it is inserted between the tributary rods 29a.

On the other hand, when the cage removal frame 16 is moved downward to the position where the lifting of the claw rods 27, 27e is released or a position near the same, the abutment pins 71, 7 of the claw holders 23, 23a are moved downward.
1a is lowered on the rotation direction side of the vibrating cam 79.79a and within the locus of movement of the protrusions 80.80a formed on these cam surfaces 81.81a, and as the rotating shaft 1 rotates thereafter, the protrusions 80.80. 80a begins to engage with the abutment pins 71, 71a, causing these abutment pins 71, 71a to vibrate slightly in the left-right direction against the spring 67.

As a result, the claw holder 23.23a slightly swings back and forth, causing the claw device 25.25e to slightly vibrate in the left-right direction, and the lifting of the claw rods 27, 27e is released as described above.
The hook 28.28e elastically abuts on the upper surface of 9.
is made to vibrate in a direction perpendicular to the contribution rod 29a of the screen 29.

In this way, the hooking claws 28, 28e are vibrated in the direction intersecting the tribute rod 29a, so when the hooking claws 28, 28e are brought into contact with the upper surface of the cage 29, the tips of the hooking claws 28, 28e are vibrated in the direction crossing the tribute rod 29a. Even if it comes into contact with the top surface and interferes, the hooking claw 28
The toe of ゜28a slides on the upper surface of the screen rod 29 as if searching for the depression between the two tribute rods 29a.
The catch grips both sides of the screen 29 as described above.

As described above, the hooking claws 28, 28e are vibrated in the direction intersecting with the tribute rod 29a and are inserted between the tribute rods 29a, so that when the hooking claws 28, 28e abut, they interfere with the tribute rod 29a. Even when using a cage 29 that is easy to handle, for example, a cage in which the tribute rods 29a are densely arranged or a cage in which the cross-sectional shape of the tribute rods 29a is polygonal, the hooks 28 and 28e are inserted between the tribute rods 29a. The hook can securely grip both sides of 29.

The engagement between the protrusions 80, 80a of the vibrating cam 79, 79a and the abutting pin 7L71a continues until the crank 7, which swings the support arms 9, 9a, rotates slightly beyond the rear dead center, at the latest. As the supporting arms 9 and 9a swing counterclockwise in FIG.
By the time the hooks 8 and 28e begin to lift the screen 29, they are removed and the vibrations of the hooking claws 28 and 28e are stopped.

The swing width and frequency of the hooking claws 28.28e may be set arbitrarily, and it is sufficient that the hooking claws 28.28e vibrate only once after coming into contact with the screen 29.

Next, after the hooking claws 28, 28e grip both sides of the screen 29 as described above, the supporting arms 9, 9a swing counterclockwise in FIG. 1 as the rotating shaft 1 rotates. The screen removal frame 16 is moved upward toward the screen opening position.

When the support arms 9, 9a swing to the level where the hooking claws 28, 28a begin to lift both sides of the screen 28, the claw holder 28.
The cam follower 64.64a provided at 23a begins to engage with the V grooves 68, 68a of the swing cams 65, 65a, and the pawl holder 23.23a is moved by the tension of the spring 67 to the pawl devices 25, 2.
5e are gradually swung toward each other.

As a result, the hooking claws 28, 28e lift both sides of the screen 29 and move them close to each other, and smoothly pull the screen 29 away from the screen layer 83 as if pulling the screen 29 from both ends.
Lift the screen 29 into a U-shape.

Since the screen 29 is lifted from the screen layer 83 by being pulled over in this manner, there is no risk of damaging the seaweed attached to the lower screen 29 during this lifting.

When the entire screen 29 is completely lifted as described above (
9), the subsequent rotation of the swing cam 65.65a causes the claw holder 23.23a to swing back in the opposite direction to the above, causing the claw devices 25.25e to separate from each other, thereby causing the hooking claws 28, 28e separates to return to its original position, returning the screen 29 it is gripping to its flat state.

Thereafter, when the cage removal frame 16 is moved near the cage opening position B, the return cam 62 attached to the spindle 11 pushes up the engagement roller 55 of the pawl rod holding arm 49 and By swinging against the spring 34, the locking protrusion 60 of the search rod 56 engages with the engagement pin 54 of the pawl rod holding arm 49, and the pawl rod 27° 27e is returned to the lifted state again. .

Also, the return arm 32.32e provided at the upper end of the claw rod 27.27e comes into contact with the reverse rotation stoppers 45, 45e, and as the screen removal frame 16 moves thereafter, the return arm 32.32
e is swung toward the return side against the torsion springs 44, 44e,
The pawl rods 27, 27e are rotated in the opposite direction.

Then, when the screen removal frame 16 is moved to the screen opening position B, that is, near the moving end, the locking pins 37, 37e attached to the claw insertion confirmation members 35, 35e move to the second stage of the rotation regulating pieces 42, 42e. The engagement step portion 42b.

42be, and as a result, the claw insertion confirmation member 35.3
5e protrudes downward due to the elastic force of the torsion springs 44, 44e, and the locking pins 37, 37e again engage the first stage engagement step 42.
a, engages with 42ae and returns to the previous state.

When the claw rods 27, 27e are rotated in the opposite direction so that the locking pins 37, 3γe are disengaged from the second engagement step portions 42b, 42be as described above, the hooking claws 28, which are gripping the screen 29, 2
8e is returned to be parallel to the tributary rod 29a, and when the claw insertion confirmation members 35, 35e protrude downward, their lower ends are returned below the hooking portions 30.30e of the hooking claws 28, 28e. As shown in Figure 11, the hook 28,
28e is pulled out from between the tribute rods 29a, whereby both grips of the hooking claws 28 and 28e of the screen 29 are released almost simultaneously and reliably, and the screen 29 falls flat onto the screen transport conveyor 82 and is carried out in the next process, e.g. The seaweed is transported to the nori dryer.

Thereafter, the screen removal frame 16 is moved again toward the screen gripping position A, and the above series of operations is repeated.

FIG. 12 shows a different embodiment of the claw device and the search device. Below, only the parts that are different from the above embodiment will be explained, and corresponding parts of the parts that are considered to have the same or equivalent structure as the above embodiment will be explained. The alphabet E is added to the same reference numerals as , and redundant explanation will be omitted.

Reference numeral 84 denotes a guide rod fixed to the lower surface of the claw holder 23E, and the claw insertion confirmation member 35E is attached to this guide rod 84 so as to be able to slide up and down without rotation.

The lower end of this claw insertion confirmation member 35E is held at a position slightly below the hooking claw 28E.

The pawl rod 27E is fitted into the fitting hole 26aE of the pawl holder 23E so as to be able to move up and down, and is lowered by its own weight so that the locking tool 31B comes into contact with the pawl holder 23E.

44aE is a spring for rotating the pawl rod 27E in one direction;
44bE is a spring for pressing the locking pin 3γE against the rotation regulating piece 42E.

Next, the spring 34 is pressed by the pressing arm of the claw lever holding arm 49E of 52E.
It is biased clockwise in the drawing by E, and its tip is a push-down plate 47 with a frame between the claw rods 27E and the claw rods.
It is designed so that it can be connected to and disconnected from E.

In the above configuration, when the screen removal frame 16E is moved toward the screen gripping position, the lower end of the claw insertion confirmation member 35E first comes into contact with the top surface of the screen, and then the claw insertion confirmation member 35E and the claw rod 2γE contact each other. The lowering is prevented, and only the screen removal frame 16E is lowered.

After that, the screen probe rod 56E hits the top surface of the screen and is rotated.
The locking protrusion 60E of the search rod 56E is disengaged from the engagement pin 54E of the claw rod holding arm 49E.

As a result, the pawl rod holding arm 49E is rotated by the spring 34E, and the tip of the push-down arm 52E comes into contact with the press-down plate 47E, pushing down the pawl rod 27B against the spring 44bE, and using the hook pawl 28E as a receptacle. and grip the screen in the same manner as in the above embodiment.

The present application is not limited to the above-mentioned embodiments, but is based on the patent application No. 52-48755 previously filed by the applicant.
As in the embodiment of the specification, the claw holder is rotatably attached to the screen removal frame, or the claw holder is provided to be slidable in the left and right direction on the screen removal frame, and the claw holder is rotated or slidably attached to the screen removal frame. By moving the hooks, the hooks may be vibrated in a direction that intersects with the rod, or the hooks may be moved toward or away from each other.

Further, the specific configuration of the claw device is not limited to this embodiment, and the hooking claw may be rotated using a renoid activated by a signal from a limit switch.

Furthermore, the shape of the hook is not limited to, for example, L.
You can also use shaped nails.

Furthermore, the vibration of the hooking pawl may be performed using the rotation of a separate motor attached to the screen removal frame or the vibration of an electric pie break.

Further, the hooking claw may be moved toward and away from the hook using a cylinder or the like.

As described above, in the present invention, since the hook is inserted into the cage and gripped, even when there is little gripping room, such as a cage with seaweed attached to the top surface, the cage can be easily gripped by the seaweed. It has the practical effect of being able to be easily grasped without attaching any parts.

In addition, even if the hook is inserted into the cage to grasp the screen, the hook should be parallel to the tributary rod when the hook is inserted into the screen, and the hook should be inserted between the tributaries. When the cage is inserted, the catch claws intersect with the tribute rods, and when the cage is released, the hook claws are again parallel to the tribute rods, so that there is no need to apply excessive force to the cage when grasping or opening the cage. This can be carried out reliably without any problems, and accidents that damage the screen and the seaweed attached to it when gripping and opening the screen can be prevented, and the effect can be effectively put to practical use in taking out the screen to which seaweed is attached.

In addition, even if the hook is inserted between the tribute rods to grasp the screen as described above, when the hook is inserted between the tribute rods, the hook is vibrated and the hook crosses the tribute rod of the screen. This prevents gripping errors such as the hooking claw interfering with the tributary rod and not inserting it between the tributary rods. Even when gripping a screen in which the hooks are likely to interfere with the tribute rods, such as a screen in which the rods are densely organized, the screen can always be gripped reliably.

Furthermore, when holding and lifting both sides of the screen with the hooking claws, the hooking claws are brought close to each other and the screen is pulled up and lifted, making it easier to remove the nori attachment from the dehydrator. When in use, there is no fear that the screen being lifted will peel off or tear the seaweed attached to the top surface of the screen below it and cause damage, and the screen can be taken out extremely well as if it were done manually. have

In this way, the screen can be taken out effectively, and the work of taking out the screen can be automated, resulting in significant labor savings.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present application, FIG. 2 is a plan view of FIG. A perspective view showing the relationship with the movement restriction piece,
Fig. 5 is an enlarged partial view showing the hook part in Fig. 3, Fig. 6 is an explanatory diagram of the operation showing the state in which the hook in Fig. 3 is holding the screen, and Fig. 7 is an enlarged partial view of the hook in Fig. 6. FIG. 8 is an enlarged partial view showing the claw portion, FIG. 8 is a sectional view taken along the line Y-Y in FIG. FIG. 11 is an explanatory view of the operation showing a state in which the grip of the screen is released, and FIG. 12 is a side view, partially in section, of a different embodiment. Explanation of symbols of main parts, N... Screen gripping position, B
... Screen opening position, 16... Screen removal frame, 22... Moving mechanism, 23, 23a...
・Claw holder, 25, 25e...Claw device, 27・
...Tlaw rod, 28...Hook claw, 29...
...Storage, 29a...Ttribute, 63...
Screen turning device, 69...Claw swinging device, 83...
・・・Sat layer.

Claims (1)

[Scope of Claims] 1. In a screen removal device that grips and takes out screens one by one from stacked screen layers to a predetermined position, a screen removal frame is moved between a screen gripping position and a screen opening position by an appropriate moving mechanism. and at least a pair of claw holders held in the cage removal frame so as to be swingable, rotatable, or slidable, and a claw holder having a hooking claw at the tip thereof rotatably supported on the claw holder. When the catch claw is pressed against the screen at the screen gripping position, this claw rod rotates by a predetermined angle and the hook grips the screen.Then, at the screen release position, the hook rod is returned to its original position and the hook rod is rotated by a predetermined angle. A claw device is used to unhook the screen, and the hook grips and lifts the screen with the hook, and the hook holder is moved to bring the hooks close to each other, and the screen is pulled from both sides to be lifted. 1. A cage flipping device for returning rice to rice, and a claw swinging device that vibrates the claw holder to swing the hook in a direction intersecting the stake when the hook of the claw device is inserted between the tribute rods at the cage gripping position. A screen removal device consisting of a device. 2 The support arm is pivotally supported on the machine frame, and the screen removal frame is mounted on a support shaft fixed to the tip of the support arm so as to maintain a predetermined posture even when the support arm swings, and a cam is installed on the side. An integral rocking cam with a surface formed thereon is fixed to the support shaft of the support arm, a pair of claw holders are pivoted to the screen removal frame so as to be swingable in a substantially horizontal direction, and a cam follower provided on the claw holder is attached to the cage removal frame. Claims of the patent claim include a screen turning device which is pressed against the swinging cam by a spring and configured such that a pair of claw devices provided at the tip of the claw holder approach and move away from each other as the support arm swings. The screen removal device according to scope 1. 3 A vibration shaft that rotates in conjunction with the swing of the support arm is supported on the machine frame, a vibration cam is fixed to this vibration shaft, and the hooking claw, which is supported pivotally on the claw holder at the cage gripping position, is attached to the cage. When pressing,
Claim 1, further comprising a claw swinging device configured such that an abutment pin provided on the claw holder engages with the vibrating cam to swing the hooking claw in a direction intersecting the tributary rod. The screen removal device.