JPS5937064B2 - "Su" gripping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screen gripping device in a screen take-out device that takes out screens one by one from a screen layer. The present invention relates to an improvement of a screen gripping device that hooks and grips a screen by turning a claw, and is particularly effective for holding a screen with seaweed after paper making and dewatering.

When holding a cage with seaweed, you must grasp the narrow width of the tribute rods on both sides to which no seaweed is attached, and when removing the seaweed, you must pull it from the end of the tribute rod. The seaweed attached to the lower screen will peel off or the surface will become rough, causing the seaweed to become useless.

To do this, for example, a conventional cage gripping device grips the cage by pinching several tribute rods, or vibrates a pair of claws outward and thrusts the claws between the tribute rods to grip the cage under tension. cannot be put to practical use.

In order to solve this problem, the inventors attempted to insert a hook between the tributary rods and then turn the hook in a direction intersecting the tributary rod to grip the tributary rod. If you turn the hook when it hits, not only will the trapping process not take place, but the screen will twist, spoiling the nori, and in severe cases will cause damage to the screen.

Furthermore, since the thickness of the stacked screen layers varies, the heights on both sides are uneven, making it difficult to reliably grip both sides at the same time, leading to gripping errors.

SUMMARY OF THE INVENTION The present invention aims to eliminate these drawbacks and provide a screen gripping device that can reliably grip and release the screen.

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

A rotating shaft 1 is rotatably supported on a machine frame 2, and is rotated at a constant speed in the direction of the arrow by a drive motor (not shown) via a chain 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 designate a pair of left and right support arms whose middle 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 an opening-shaped cross section. Upper end (tip)
ζ Both ends of a support shaft 11 for supporting a screen removal frame to be described later are fixed.

The tip of an arm 12 fixed to the pivot shaft 5 faces between the side plates 10a and 10b of the connecting frame 10, and this arm 12 uses the elastic force of a spring 13 interposed between one side plate 10a and the other side plate 10a. When the rotary shaft 1 rotates and the pivot shaft 5 is rotated by a predetermined angle, this amount of rotation is applied to the arm 12, the spring 13 and the connecting frame 1.
0 to the support arms 9, 9a, which causes the support arms 9.9a to swing as shown in FIG. However, at the screen gripping position A, the claw device, which will be described later, comes into contact with the top surface of the screen, and the supporting arms 9,
When the clockwise swing of 9a in FIG. 1 is stopped, the arm 12 compresses the spring 13, and the supporting 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+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 2Q so as to be concentric with the pivot 5 by being loosely fitted to the pivot 5. The fixed ring 19 has approximately the same diameter as the rotating shaft 17, and the fixed ring 19 connects both ends of the steel belt 20 to the spring 21. This endless cable 19 is suspended between the rotating wheel 17 and the fixed ring 18, and is attached to the screen removal frame 1.
6 is set so that the upper plate 16C is substantially horizontal, and is fixed to predetermined positions on the outer periphery of the rotary wheel 17 and the fixed ring 18 so as not to slip.

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 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 arms 9, 9a, 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 which are pivotally supported on pivot bolts 24.243 installed in the upper plate 16c of the screen removal frame 16 so as to be able to swing in a substantially horizontal direction. A claw device 25.25e is installed at the front end of the machine as follows.

Since these claw devices 25 and 25e have substantially the same configuration except that the left and right sides are reversed, 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 wedge-shaped.

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 claw holder 23, and the claw rod 27 is urged downward by the elastic force of this spring 34, and the claw rod 27 is biased downward by the spring holder 33 and the lower surface of the claw 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 3T 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 27 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 comes off the second stage engagement 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 a screen grippable position when gripping the screen 29 and releases the lifting of the claw rod 27, and is configured as follows.

That is, 47 is a long and narrow hooking groove 47a formed at both ends.
t 47 b is a pull-up plate fitted near the upper ends of the claw rods 27 and 27 e, respectively, and detachment prevention pins 48 and 48 b are fixed to the lower surface.

Reference numeral 49 denotes a pawl holding arm that lifts and holds the pawl rods 27, 27e via the lifting plate 47, and the horizontal shaft is rotatably supported on a support bracket 50y50a fixed to the upper plate 16a of the screen removal frame 16. 51, a pair of lifting arms 52, 52a fixed to both ends of the horizontal shaft 51, projecting forward, and entering the lower side of the lifting plate 47 on both sides of the detachment prevention pins 48, 48a; It consists of a retaining arm 53 that is fixed to the middle part of the horizontal shaft 51 and projects downward.

At the tip of this holding arm 53, there is a search bar 56 on one side.
An engaging pin 54 (engaging portion) that engages with the locking protrusion 60 is implanted, and a retaining 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 is rotatably supported on a fixed support bracket 57, 57a, 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 the pawl rod 27.2 to restrict the rotation of the pawl rod holding arm 49 in the clockwise direction in FIG.
7e is held in a state where it is lifted by a predetermined amount L1 against the spring 34.
It is located an appropriate amount below the lower end of 8e.

When the screen removal frame 16 is moved close to the screen 29 held by the screen 29 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 the lifting of the pawl rod 27° 27e.
The claw rods 27.27e project downward under the elastic force of the springs 34.34e and come into contact with the cage 29.

Reference numeral 62 denotes a return cam for returning the pawl 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 retaining 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 configured to swing back in the lifting direction (counterclockwise in FIG. 3) as the lever is lifted.

Next, 63 brings the claw devices 2525e of the claw holders 23 and 23a close to each other by an appropriate amount when lifting the screen 29 with the hooking claws 28 and 28e, and after lifting the screen 29 from both sides so as to pull it over, separate them. 18? This is a screen turning device that turns the screen back and is configured 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.
, 64a and are fixed to the support shaft 11, and cam surfaces 66.66a are formed on the side surfaces of the cam followers 64.64a of these swing cams 65.65a, respectively. The cam follower 64.64a is pressed against these cam surfaces 66.66a by a spring 67 stretched between the pawl holders 23 and 23a.

The cam surface 66.66a has one groove 68 at a predetermined position.
, 68a are formed, and when the hooking claws 2B, 28e begin to lift the screen 29 as the support arm 9°9a swings, the cam followers 64, 64a fit into these grooves 68, 682, and thereby The pawl holders 23, 23a swing to bring the pawl devices 25° 25e close to each other, and after lifting the rear end 29 completely or largely, the cam follower 64° 6
4a is pulled out from the V groove 68.68a and the claw device 25.2
5e are directed to their original positions and separated from each other.

Note that the pivot bolts 24, 24a of the claw holders 23, 23a
is located behind the cam follower 64°64a, the tensioning position of the spring 67 is behind the pivot port 24, 24a, and the cam surface 66.6 of the swinging cam 65.65a
A convex portion may be formed in 6a instead of a V groove to allow the claw devices 25 and 25e to approach and separate from each other.Next, 69 presses the hooking claw 28 against the cage 29 to release the hook 29a.
This is a nail tensioning device that swings the hooking pawl 28 in a direction intersecting (preferably perpendicular to) the tributary rod 29a when it is pushed 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 that is rotatably supported on the machine frame 2 so as to be located approximately directly below the abutment pins 71 and 71a when the screen removal frame 16 is moved to the vicinity of the screen gripping position A; ，
The chain wheel 73 and the chain 7 rotate one rotation or several rotations (one rotation in this embodiment) with one swing of the chain 9a.
4 and f are connected to the rotating shaft 1 via wheels 75 and 76, a chain 77, and a chain wheel 78.

Reference numerals 79 and 79a denote a pair of vibrating cams fixed at predetermined positions on the vibrating shaft 72, and the side surfaces thereof are provided with a large number of protrusions 80 in the normal direction.
Cam surfaces 81°812 having 80a are formed.

The convex shape 80.80a of this cam surface 8L81a is caused by the hooking claws 28, 28e when the screen removal frame 16 is moved to the screen gripping position A.
From the time when the contact pins 71, 71 are brought into contact with the screen 29,
a, the claw holders 23 and 23a are engaged with the springs 67 and 23a, respectively.
It is set so that the engagement between them is released before the screen 29 starts to be lifted.

It goes without saying that a drum cam having a meandering groove on the outside may be used as the vibrating cams 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 drive motor, the pivot shaft 5 rotates by a predetermined angle via the crank 7 etc., and this rotation amount is transmitted via the arm 12, the spring 13, and the connecting frame 10 to the supporting arm 9,
9a, and as a result, the support 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 cage removal frame 16 is maintained in its posture by the endless cable 19 suspended between the rotary wheel 17 and the fixed ring 18 so that its posture does not change even if the supporting arms 9, 9a swing. 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, when the supporting arms 9, 9a swing clockwise in FIG. The shaft 11 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.

Furthermore, when the rotary shaft 1 rotates, the vibration shaft 72 rotates in conjunction with this rotation, and a 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 ends of the seaweed that are not fitted, and the subsequent downward movement of the supporting arms 9, 9a is prevented. Water tank 2
9, and the search lever 56 is rotated counterclockwise in FIG.

Then, as the support arm 9°9a swings, the pawl rod 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 retaining arm 49 is subjected to a clockwise rotational force in FIGS. 1 and 3 until the engagement roller 55 comes into contact with the return cam 62. Release the lifting of the claw rods 27 and 27e.

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, since the pawl rod 27.27e can protrude downward as much as possible within a range corresponding to the lifting amount L1 lifted by the pawl rod holding arm 49, the pawl rod 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 27, 27e elastically contact the upper surfaces of both sides of the screen 29, respectively, and when the claw rods 27, 27e are lifted, the distance between the lower ends of the claw rods 27, 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 ends of the claw rods 27, 27e come into contact with the upper surface of the screen 29 as described above, the supporting arms 9, 9a are rotated by the rotating wheels. The spring 34 biasing the pawl rod 27.27e with the subsequent rotation of the
, 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, 26a of the claw holder 23.degree. 27
．． When the screen removal frame 16 is prevented from descending by coming into contact with the spring holder 33. The support arms 9, 9 are fitted by compressing the support arms 9, 9.
There is no risk that a will be forcibly swayed and damage the screen 29 or the seaweed.

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 rod 27°2γe is released, the support arms 9, 9a
The subsequent rocking is absorbed by the compression of the spring 13.

Next, when the lower ends of the claw rods 27.27e are elastically brought into contact with the upper surfaces of both ends of the cage 29 as described above, the claw rods 27.
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 of the rotation regulating piece 42.42e fixed to the claw rod 27.27e,
42a e is disengaged, and as a result, the pawl rods 27, 2
7e is a torsion spring 44°4 so that the second stage engagement step portions 42b, 42be engage with the locking pin 37.37e.
It is rotated approximately 90 degrees in the direction of the arrow in FIG. 2 by a twisting force of 4e.

Due to the rotation of these pawl rods 27.27e, the hooking pawls 28:28e inserted between the tribute rods 29a are rotated to be approximately perpendicular to the tribute rods 29a, as shown in FIGS. The hook portions 30.30e of the claws 28.28e engage with the tribute rods 29a located on both sides of the uppermost screen 29, so that the hooks grip both sides of the screen 29, respectively.

In this case, the hook portion 30.30e is sized to fit one screen rod 29a, and the tip of the hook 28.28e is formed in an arc shape, so there are two hooks 28, 28e. There is no danger of gripping the tributary rod 29a, and it is a hooking claw.

28. The lower end of 28e is the contribution 29 of the second screen 29 from the top.
There is no risk of it getting caught and twisting.

Further, the upper surface of the screen 29, which is gripped by the hooking claws 28.28e, is held in position by the lower end of the claw rod 27.27e and the lower end of the claw insertion confirmation member 35.35e.

The above is a case where the hooking claws 2B and 28e are inserted between the tribute rods 29a, but if the hooking claws 28 and 28e interfere with the tribute rod 29a, the first retaining step portions 42a and 42ae
Since the engagement between the locking pins 37 and 37e does not disengage, the hooking claws 28 and 28e are held parallel to the tributary rod 29a until the latter 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 7L71 of the claw holders 23, 23a
a is lowered into the locus of movement of the protrusions 80.80a formed on the straight cam surfaces 81, 81a on the rotational direction side of the vibrating cam 79.79a, 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 pawl holders 23, 23a are slightly reciprocated, causing the pawl devices 25, 25e to slightly vibrate in the left-right direction, and as described above, the lifting of the pawl rods 27, 27e is released, and the cage 29
The hooking pawl 28.28e elastically abutted against the upper surface of the cage 29 is vibrated in a direction perpendicular to the contribution rod 29a of the screen 29.

In this way, the hooks 28, 28e are vibrated in the direction intersecting the cage 29a, so the hooks 2B, 28e are
Even if the toe of the hook 28.28a touches the top surface of the tribute rod 29a and interferes with the upper surface, the hook 28.
The toe of 8° 28e 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 rods 29a and inserted between the tribute rods 29a, so that when the hooking claws 28.28e abut, they interfere with the tribute rods 29a. Even when using a cage 29 that is easy to handle, for example, a cage in which the tribute rods 29a are densely organized 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 projection 80.80a of the vibration cam 79.79a and the abutment pins 71, 71a continues until the crank 7, which swings the support arms 9, 9a, rotates slightly beyond the rear dead center. At the latest, as the support arms 9 and 9a swing counterclockwise in FIG. 1, the screen removal frame 16 is raised and the hooks 28 and 28e begin to lift the screen 29, and the hooks 28 and 28 are disengaged. The vibration of °28e is 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 hooks 28, 28e grip both sides of the screen 29 as described above, the support 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 vibrate to the position 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 6B, 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 vibrating cams 65, 65a causes the pawl holders 23, 23a to swing back in the opposite direction to the above, causing the pawl devices 25.25e to separate from each other, thereby causing the hooking pawls 28, 28e to move away from each other. moves away to return to its original position, returning the gripped screen 29 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 It is swung against the spring 34, whereby 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 frame 27° 27e is returned to the lifted state. Ru.

Further, the return arm 32.326 provided at the upper end of the claw rod 27.27e comes into contact with the reversal stoppers 45, 45e, and as the screen removal frame 16 moves thereafter, the return arm 32.32e
is slid toward the return side against the torsion springs 44, 44e, and 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 member 35, 35e move to the second stage of the rotation regulating piece 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 spring 44.44e, and the locking pin 37.37e again engages the first stage engagement step 42.
a, engages 42ae and returns one town.

When the claw rods 27 and 27e are rotated in the opposite direction so that the locking pins 37 and 37e are disengaged from the second engagement step portions 42b and 42be as described above, the hooking claws 28 and 27e that grip the screen 29. 2
8e is returned to be parallel to the screen rod 29a, and when the claw insertion confirmation member 35.degree. As shown in FIG. 11, the hooking claws 28 and 28e are pulled out from the cylinder of the screen rod 29a, and as a result, the screen 29 is released almost simultaneously and reliably from both of the gripping claws 2B and 28e, and the screen 29 is moved onto the screen conveyor 82. It falls flat and is transported to the next step, for example, a nori dryer.

Thereafter, the 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 31E 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 37E 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 dirt floor of the screen, and then the claw insertion confirmation member 35E and the claw rod 27E 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 27E against the spring 44bE, and elastically pushing the catch pawl 28E into the cage. They are brought into pressure contact and the screen is gripped in the same manner as in the above embodiment.

In the above embodiment, claw devices are provided at both left and right ends so that the screen can be taken out from both sides, but the claw devices may be provided only on one side so that the screen can be taken out from one side.

Further, although the claw holder is pivotably attached to the screen removal frame, the claw holder may be integrally fixed to the screen removal frame, or may be used also as the screen removal frame.

Further, the hook does not necessarily have to be shaped like a ginkgo leaf, and may be, for example, an L-shaped hook with the tip of a wire bent.

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 hooking claw is rotated as described above, the configuration is as described in the claims, and the hooking claw is completely inserted between the tribute rods of the screen. The hook is rotated so that it intersects with the tribute rod only when the hook is intersected with the tribute rod, and the hook is not rotated when the hook is interfering with the tribute rod, so that the hook is still between the tribute rod. There is no case where the hooking claw rotates so as to intersect with the tributary rod even though it is not inserted, making it impossible to insert the hooking claw later, and the hooking claw interferes with the tributary rod. Even if there is a hook, the hook can then be inserted between the tribute rods and the hook can be grasped, which has the effect of reducing errors in grasping the screen.

Furthermore, when the hooking claw is rotated so as to be parallel to the tribute rod at the cage opening position, the claw insertion confirmation member forcibly removes the hooking claw inserted into the cage from the cage. This has the advantage that even if the hook is used to hold the screen, the grip can be released reliably with a simple structure.

In addition, in the present invention, the position of the top surface of the screen is detected using a screen detection rod, and only when the top surface position of the screen is at a predetermined position, the claw rod protrudes by the elasticity of the spring and the hooking claw is inserted into the screen. As a result, the screen can be gripped reliably regardless of the position of the screen, and the screen can be prevented from being held in an unstable state.

In addition, since the above arrangement is made, when gripping both sides of the screen, even if there is a slight difference in the position of both sides of the screen, both sides of the screen can be gripped securely. This has the advantage of preventing the accident of gripping only one side.

[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, 23...Claw holder, 2
5...Claw device, 27...Claw rod, 28.
...Hook claw, 29...Set, 29a...
... Tribute, 34... Spring, 35...
Claw insertion confirmation member, 37... Locking pin, 42...
...Rotation regulating piece, 42 a t 42 b...
・・Engagement stepped portion, 46 ・・・Searching device, 49 ・・
・・・・Claw holding arm, 56 ・・・・Survey rod, 54
..... Engagement pin (retaining part) 60 ..... Locking protrusion (locking part).

Claims (1)

[Scope of Claims] 1. A pawl rod with a hooking pawl at the tip is rotatably supported on a pawl holder, and a pawl insertion confirmation member is attached to the pawl rod or the pawl holder only in the axial direction of the pawl rod. A rotation regulating piece that is attached to slide and forms a first and second retaining step that regulates the position of the hooking claw of the claw rod in a direction that is parallel to and intersects with the rod. One of the retaining pins that engages with the engagement stepped portion of the regulation piece is fixed to the pawl rod and the other to the pawl insertion confirmation member, and the pawl rod is urged to rotate in one direction. A cage gripping device equipped with a pawl device that urges a pawl insertion confirmation member in the rod axis direction to engage an engagement pin with a retaining step portion of a rotation regulating piece. 2. Fit the pawl insertion confirmation member into the pawl rod, interpose a torsion spring between the pawl rod and the pawl insertion confirmation member, and use the torsion spring to bias the pawl insertion confirmation member to rotate. The cage gripping device according to claim 1, characterized in that it also provides biasing in the rod axis direction. 3 A pawl rod with a hooking pawl at the tip is rotatably supported on a pawl holder, and a pawl insertion confirmation member is attached to the pawl rod or the pawl holder so that it slides only in the axial direction of the pawl rod. , the direction of the hooking pawl of the pawl rod is parallel to the rod and the direction that intersects with the direction Q. The rotation restriction piece that forms the first and second engaging step portions that restrict the position and the rotation restriction piece are secured together. One of the engaging pins that engages with the stepped portion is fixed to the pawl rod and the other to the pawl insertion confirmation member, and the pawl rod is urged to rotate in one direction, and the pawl insertion confirmation member is A pawl device that is biased in the rod axial direction and engages an engagement pin with an engagement stepped portion of a rotation regulating piece, and a cage retrieval rod that is biased to rotate in one direction on the cage removal frame. Along with supporting the
A pawl rod holding arm is attached which is biased by the elasticity of a spring so that one end engages and disengages from the pawl rod, and an engaging portion provided at the other end of this pawl rod holding arm is provided at the rear end of the search rod. The locking part and the pawl holding arm are held in a predetermined position by engaging with the locking part, and when the suction rod comes into contact with the upper surface of the screen and is pushed up a predetermined amount, the locking part of the suction rod and the pawl are engaged. A cage detecting device configured such that when the rod holding arm is disengaged from the retaining portion, the claw rod is projected by the elasticity of the spring and the hooking claw is inserted between the rods. gripping device. 4 A spring is interposed between the pawl rod and the pawl holder to urge the pawl rod to protrude downward, a pawl rod holding arm is pivotally supported on the pawl holder, and one end of the pawl rod holding arm is is brought into contact with the pawl rod, the pawl rod is lifted against the elastic force of the spring, and the engaging portion provided at the other end of the pawl rod holding arm is engaged with the locking portion of the search rod. Claim 3 is characterized in that it is equipped with a search device consisting of:
The cage gripping device described in Section 1.