JPH06320628A - Press roll replacing device - Google Patents

Abstract

PURPOSE:To enhance an efficiency in replacing a press roll while contriving the omission of a manual operation. CONSTITUTION:In replacing a large-weight press roll 38, a manual operation of an operator is not almost needed and, thus, the press roll 38 can be automatically replaced. Therefore, the omission of a manual operation can be contrived, and a working efficiency can be enhanced. Furthermore, since a press roll 38 to be used next has been already supplied to a delivery member 94 and waiting just above a delivery position C, the press roll 38 can be rapidly supplied to a holding member 40, and a working efficiency is further enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for replacing a press roll of a calender roll machine for coating rubber around a large number of cords.

[0002]

2. Description of the Related Art Generally, a calendar roll machine is used for coating rubber around a large number of cords. When the type of cords to be coated is changed, the cord diameter, the cord interval, etc. are changed. Therefore, it is necessary to replace the press roll that is pressed against the calender roll while aligning these cords.

Conventionally, such press roll replacement is
After the worker carries in the empty carriage to the vicinity of the press roll,
The currently used press roll is removed from the calender machine and transferred to the carriage, then the carriage supporting the press roll is carried out, and then the carriage supporting the press roll to be used next is moved to the calender machine. After that, the press roll for the next use is mounted on the calendar machine.

[0004]

Since such a conventional press roll exchange is manually performed by an operator,
There is a problem that the work efficiency is low as well as the heavy labor is forced.

An object of the present invention is to provide a press roll exchanging device capable of improving the efficiency of press roll exchanging work while saving labor.

[0006]

SUMMARY OF THE INVENTION Such an object is to provide a gripping member capable of gripping both axial end portions of a press roll that rotates around a rotation axis parallel to the axis of the calender roll, and a gripping member for the press roll. Means for moving between a proximity position close to the calender roll and a separation position separated from the calender roll, a cradle for receiving the press roll from the gripping member at the delivery position near the separation position and supporting the press roll from below, And a delivery member that is provided directly above the delivery position and that can hold both axial end portions of the press roll to be used next, and a delivery unit that lowers the delivery member. After delivering the press roll for the next use supported above from the receiving stand to the delivery member at the delivery position, wait for the delivery member When the press roll delivered from the gripping member to the cradle is carried out together with the cradle by the unloading device, the delivery member is lowered and the empty gripping member is delivered to the press roll for the next use. And can be achieved.

[0007]

The current press roll gripped by the gripping member is now in a position close to the calender roll because the gripping member is moved to the proximity position by the moving means, while the delivery member is empty. Suppose you are waiting at the standby position. At this time, the press roll for the next use supported by the cradle has been carried in to the delivery position, and the cords supplied to the calender roll are aligned with the current press roll in the proximity position and then rubber is applied from both sides. It is coated. Next, when exchanging the press roll, first, the delivery member is lowered by the elevating means, and the press roll for the next use supported on the receiving table is delivered from the receiving table to the delivering member. After that, the delivery member holding the press roll for the next use is raised to the standby position by the elevating means. After that, the gripping member gripping the current press roll is moved by the moving means from the close position to the separated position. Then, when the current press roll reaches the delivery position near the separation position, the current press roll is delivered from the gripping member to the empty pedestal.
When the cradle receives the current press roll from the gripping member in this way, the cradle is carried out by the carry-out means while supporting the current press roll from below. At this time, the press roll for the next use held by the delivery member is lowered to the delivery position by the elevating means, and the press roll for the next use is delivered from the delivery member to the empty holding member.
Next, the delivery member is raised to the standby position by the elevating means, and the gripping member that holds the press roll to be used next is moved to the proximity position by the moving means, and again,
Start the coating operation. During such a coating operation, the next-use press roll supported by the receiving table is carried to the delivery position. As described above, when the heavy press roll is replaced, the manual operation of the operator is almost unnecessary, so that the automatic replacement can be performed, so that the labor can be saved and the work efficiency can be improved. Moreover,
During the coating operation, the press roll to be used next is supplied to the delivery member and is made to stand by immediately above the delivery position, so that the press roll is quickly supplied to the holding member, and the work efficiency is further improved.

According to the present invention, the eccentric cam is simply rotated by the rotating mechanism so that the proximity position of the gripping member, that is, the interval between the press roll and the calender roll can be easily and accurately adjusted. Can be adjusted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1, 2, 3, and 4, 11 is a calendar machine, and this calendar machine 11 has a plurality of horizontal calender rolls 12, here four calender rolls 12. Then, of these calender rolls 12, the pair of first and second calender rolls 12a and 12b, which are installed on the upper side, rotate in the direction of the arrow, and the first and second calender rolls 12 are rotated.
A rubber sheet 14 is molded with the bank rubber 13 between a and 12b. Further, of the calender rolls 12, two pairs of third and fourth calender rolls 12 installed on the lower side are paired.
c and 12d also rotate in the direction of the arrow to form a rubber sheet 16 by the bank rubber 15 between the third and fourth calender rolls 12c and 12d. The rubber sheets 14 and 16 molded in this manner are brought into close contact with the outer peripheries of the second and third calenders 12b and 12c, and the second and third calenders are rotated by the rotation of the calender rolls 12.
It is supplied between the calendars 12b and 12c.

A frame 20 is installed in a pit 19 formed on a floor surface 18 behind the calendar machine 11, and mounting plates 21 are fixed to both sides of the frame 20, respectively. Reference numeral 22 denotes an oscillating body that is oscillatably supported by each mounting plate 21 via a rotary shaft 23. A semicircular recess 24 is formed at the tip of each oscillating body 22 and a contact plate 25 is provided.
The first gripping body 26 to which is attached is fixed. Reference numeral 27 denotes a second gripping body that is swingably supported by the first gripping body 26 via a pin 28, and a semicircular recess 29 is also provided at a position facing the semicircular recess 24 of the second gripping body 27. Has been formed. A cylinder 33 is swingably supported by a bracket 34 attached to the rocking body 22, and the tip of the piston rod 35 of the cylinder 33 is connected to the base end of the second gripping body 27. As a result, when the cylinder 33 operates and the piston rod 35 projects or retracts, the second gripping body 27 is in a closed position parallel to the first gripping body 26 and in an open position inclined with respect to the first gripping body 26. Swing between and. Then, when the second gripping body 27 swings to the closed position, the first and second gripping bodies 26, 27 turn the sleeves 39 provided at both axial ends of the press roll 38 into the semicircular recesses 24, 29. Grip from both sides in the inserted state.At this time, press roll 38
The axis of rotation of is parallel to the calender roll 12, more specifically the third calender roll 12c. The above-mentioned first and second gripping bodies 26, 27 as a whole grip the calender roll 12, more specifically, both axial end portions of the press roll 38 that rotates around a rotation axis parallel to the axis of the third calender roll 12c. A gripping member 40 capable of performing the above is configured.

Here, the press roll 38 has a large-diameter main body portion 42 in the central portion in the axial direction, and on the outer periphery of the main body portion 42, there are a plurality of annular rings extending equidistantly in the axial direction and extending in the circumferential direction. Groove 43 is formed. Then, in these annular grooves 43, the press roll 38 is attached to the third calender roll 12c and the rubber sheet 16 is attached.
Calendar roll machine when pressed through
A large number of cords 44 supplied toward 11 are inserted one by one, so that these cords 44 are aligned at equal intervals. Further, the press roll 38 has small-diameter shaft portions 45 each having a small diameter at both ends in the axial direction.
A cylindrical sleeve 39 is rotatably supported by a bearing 46. As a result, this press roll 38
When is held by the holding member 40, the press roll 38 can rotate freely.

Reference numeral 49 denotes a cylinder as a moving means, the head side of which is connected to the lower portion of the frame 20 via a bracket 50, and the tip end of a piston rod 51 of these cylinders 49 is connected to the rocking body 22. As a result, when these cylinders 49 are operated synchronously and the piston rod 51 projects or retracts, the gripping member 40 moves between the proximity position A shown by the solid line and the separation position B shown by the phantom line in FIG. Here, the proximity position A means that the press roll 38 held by the holding member 40 is the third calender roll 12c.
Is a position that is pressed against the outer periphery of the third calender roll 12c via the rubber sheet 16, while the separated position B is a position that is separated from the calender roll 12c that is behind the adjacent position A. Is. Then, the above-mentioned proximity position A is finely adjusted by the adjusting means 55 in order to make the interval between the press roll 38 and the third calender roll 12c an appropriate value. This adjusting means 55
Has a rotation shaft 56 rotatably supported by the mounting plate 21, and the rotation axis of the rotation shaft 56 is parallel to the rotation axis of the press roll 38. A worm wheel 57 coaxial with the rotating shaft 56 and a disk-shaped eccentric cam 58 in which the central shaft is eccentric from the rotating shaft line of the rotating shaft 56 by a predetermined distance.
Is fixed. The contact plate 25 contacts the outer periphery of the eccentric cam 58 to determine the proximity position A of the gripping member 40 described above. Here, when the rotary shaft 56 is rotated as necessary, the rotary shaft 56 rotates. Since the distance from the axis line to the outer circumference of the eccentric cam 58 changes, this proximity position A can be easily and highly finely adjusted. Reference numeral 59 is a motor with a brake attached to the mounting plate 21, and a rotating shaft 60 of the motor 59 is rotatably supported by a pair of bearings 61 fixed to the mounting plate 21. The rotating shaft 60 between the bearings 61 is provided with a worm 62 that meshes with the worm wheel 57 described above. As a result, when the motor 59 operates, the eccentric cam 58 rotates eccentrically around the rotation axis of the rotation shaft 56, but the rotation amount is measured and displayed by an encoder (not shown). The above-mentioned motor 59, worm 62, and worm wheel 57 together constitute a rotation mechanism 63 that rotates the eccentric cam 58.

Reference numeral 65 denotes an exchange trolley, and wheels 68 rolling on the floor surface 18 are rotatably supported at four corners of a bottom surface of a trolley body 66 of the exchange trolley 65 via brackets 67. 69 is a triangular rail that is laid on the floor 18 and has a triangular cross-section extending in the front-rear direction.
The outer periphery of a guide roll 71 rotatably supported via a bracket 70 is engaged with the lower surface of the guide roll 71, and the outer periphery of the guide roll 71 has a cross section in the circumferential direction of the same shape as the cross section of the triangular rail 69. Is formed with a triangular groove 72. A pedestal 73 is attached to the upper end of the trolley body 66, and the pedestal 73 has four receiving plates 74 inclined so as to spread upward. When the press roll 38 is placed on the pedestal 73, the receiving plate 74 supports both axial end portions of the main body 42 of the press roll 38 from below.

Reference numeral 75 denotes a cylinder as a carry-out means that extends in the front-rear direction and is housed in a recess 79 formed in the floor surface 18. At the tip of a piston rod 76 of this cylinder 75, a stop plate 77 extending upward is provided. Is fixed. Reference numeral 78 denotes a stopper plate fixed to the front end of the carriage main body 66. The stopper plate 78 extends downward and can contact the rear surface of the stop plate 77. When the piston rod 76 of the cylinder 75 is projected to the stroke end, the exchange carriage 65 is guided by the triangular rail 69 and is moved forward until the stopper plate 78 comes into contact with the stop plate 77. 38 reaches the vicinity of the separated position B, more specifically, the delivery position C slightly separated from the separated position B to the close position A side. At this time, the cradle 73 receives the press roll 38 from the gripping member 40 and supports it from below. Further, the press roll 38 transferred to the receiving table 73 in this way is moved backward by the piston rod 76 of the cylinder 75 being retracted, and is transferred to the transfer position C.
Be shipped from.

Reference numeral 80 denotes a horizontal support stand installed above the cylinder 75, and both side ends of the support stand 80 have the frame 20.
Is attached to. A guide shaft 81 extending in the vertical direction is inserted into the support base 80 so as to be able to move up and down.
An elevating table 82 is fixed to the lower end of 81. 83 is a support base 80
The rack body 83 is a vertically extending rack body that is vertically inserted into the motor.
It engages with a pinion (not shown) that is driven and rotated by 84, and as a result, when the motor 84 is operated, the elevator board is raised.
82 moves up and down while being guided by the guide shaft 81. A pair of rotary shafts 86 parallel to the press rolls 38 are rotatably supported on the lift table 82 immediately above the delivery position C so as to be separated in the front-rear direction. Grasping claws 87 extending downward are fixed to each of the rotating shafts 86, and the lower ends of these grasping claws 87 are bent in an arc shape in a direction toward each other. Further, arms 88 extending in directions approaching each other are provided at the upper ends of the grip claws 87, and these arms 88 have elongated holes, respectively.
89 are formed. 90 is a lift 82 above the arm 88
The piston 92 of the cylinder 90 has a pin 92 inserted into both the long holes 89 and fixed to the tip of the piston rod 91. Reference numeral 93 is a fan-shaped external gear attached to each rotary shaft 86, and these external gears 93 mesh with each other. As a result, when the cylinder 90 operates and the piston rod 91 projects or retracts, the grip claws
87 swings between an open position D shown by an imaginary line and a gripping position E shown by a solid line in FIG. The above-mentioned pair of grip claws 87 as a whole constitutes a delivery member 94 which is installed immediately above the delivery position C and which is capable of holding both axial end portions of the press roll 38b to be used next, specifically, the small diameter shaft portion 45. Further, the motor 84, the pinion, and the rack body 83 described above collectively constitute an elevating means 95 for elevating the delivery member 94.

Next, the operation of the embodiment of the present invention will be described. Now, the first, second, third, and fourth calender rolls 12a, 12b, 12c, and 12d are respectively rotated in the arrow directions, and the rubber sheet 14 is formed by the bank rubber 13 between the first and second calender rolls 12a and 12b. Further, the rubber sheet 16 is molded by the bank rubber 15 between the third and fourth calender rolls 12c and 12d, and the rubber sheets 14 and 16 are closely adhered to the outer circumferences of the second and third calender rolls 12b and 12c, respectively. It is assumed that it is supplied between the second and third calendars 12b and 12c. At this time, the current press roll 38a held by the holding member 40 is
Since it is moved to the proximity position A by the operation of 49,
A large number of cords 44 are aligned by the annular groove 43 and pressed against the rubber sheet 16 for pressure bonding. Then, when the rubber sheet 16 and the rubber sheet 14 to which the cords 44 aligned in this way are pressure-bonded are supplied between the second and third calenders 12b and 12c, the rubber sheets 16 and 14 will be able to press the cords 44. While being coated from both sides, they are pressed against each other to form a strip-shaped ply 98. At this time, the delivery member 94 is on standby at the standby position F in an empty state. Also, at this time,
Since the exchanging carriage 65 is moved forward while being guided by the triangular rail 69 until the stopper plate 78 comes into contact with the stop plate 77 of the piston rod 76 protruding to the stroke end, the exchanging carriage 65 is supported by the receiving base 73 from below. The press roll 38b to be used next is carried into the delivery position C. Here, since the exchange cart 65 is guided by the triangular rail 69 when being carried in, the press roll 38b to be used next is not displaced axially with respect to the third calender roll 12c.
As a result, the linearity of the cords 44 can be secured when the cords 44 are aligned by using the press roll 38b to be used next time.

Next, when replacing the current press roll 38a with the press roll 38b for the next use, first, the motor 84 is operated to rotate the pinion, and the rack body 83 meshing with the pinion is lowered. As a result, the standby position F
The delivery member 94 and the elevating table 82, which have been waiting at, descend as a unit while being guided by the guide shaft 81. At this time, both gripping claws 87 of the transfer member 94 are located at the open position D because the piston rod 91 of the cylinder 90 projects. Then, when the delivery member 94 descends to a predetermined position,
The operation of the motor 84 is temporarily stopped. Next, the cylinder 90 operates and the piston rod 91 retracts. As a result, the grip claw 87 swings synchronously from the open position D to the grip position E,
At the delivery position C, the small-diameter shaft portions 45 of the press roll 38b to be used next, which are supported on the pedestal 73, have the grip claws 87
Is gripped by. In this way, the press roll 38b to be used next is delivered from the receiving table 73 to the delivery member 94. Next, the motor 84 is activated again, and the delivery member 94, the press roll 38b to be used next, and the lifting platform 82 are integrally raised. Then, the ascending stops when the delivery member 94 holding the press roll 38b to be used next reaches the standby position F.

Next, the cylinder 49 operates and the piston rod 51 retracts. As a result, the oscillating body 22 oscillates rearward about the rotary shaft 23, and the gripping member 40 gripping the current press roll 38a moves from the close position A to the separated position B. The current press roll 38a is at the delivery position C
When it reaches, the operation of the cylinder 49 is once stopped. Next, the cylinder 33 is operated to retract the piston rod 35, swing the second gripping body 27 around the pin 28, and open the gripping member 40. In this state, the piston rod 51 of the cylinder 49 is retracted again, and the grip member 40 is moved to the separated position B. At the initial stage of this movement, the current press roll 38a released from the grip of the grip member 40 is delivered from the grip member 40 to the empty cradle 73. In this way, the cradle 73 is a gripping member.
When the current press roll 38a is received from 40, the cylinder 75 operates and the piston rod 76 retracts, and the stop plate 77 pushes and moves the stopper plate 78 of the exchange cart 65 rearward. As a result, the cradle 73 is carried out of the exchanging device while supporting the main body 42 of the current press roll 38a from below.

Next, the piston rod 51 of the cylinder 49 is projected to move the holding member 40 in the open state until the semicircular recess 24 reaches the delivery position C, and the motor 84
Is operated to lower the press roll 38b to be used next, which is gripped by the delivery member 94, to the delivery position C, from the delivery member 94 to the empty gripping member 40, specifically, the semicircular recess 24 of the first gripping body 26. The next press roll 38b is delivered. Next, the piston rod 91 of the cylinder 90 is projected and the grip claw 87
After swinging to the open position D, the motor 84 is operated to raise the delivery member 94 at the open position D to the standby position F.
At this time, the piston rod 35 of the cylinder 33 is projected to swing the second gripping body 27, the gripping member 40 is closed, and both sleeves 39 of the press roll 38b to be used next are gripped by the gripping member 40. Next, a gripping member that projects the piston rod 51 of the cylinder 49 and grips the press roll 38b to be used next.
The contact plate 25 is swung until the contact plate 25 contacts the outer periphery of the eccentric cam 58, and the gripping member 40 is moved to the proximity position A. In this way, the press roll becomes the current press roll 38a.
When the press roll 38b for the next use is replaced from
The calendar machine 11 is activated to start the coating operation. During such a coating operation, the current press roll 38a is taken out from the cradle 73, and the next press roll is placed on the vacant cradle 73. Then the exchange trolley
Move 65 while using the triangular rail 69 as a guide,
The next press roll is carried to the delivery position C.
As described above, when the heavy press roll 38 is replaced, since the manual work of the operator is almost unnecessary, it is possible to perform the automatic replacement, so that the manpower can be saved and the work efficiency can be improved. Moreover, during the coating operation, the press roll 38b to be used next is already supplied to the delivery member 94 and stands by at the standby position F immediately above the delivery position C, so that the press roll 38 is quickly supplied to the gripping member 40. , Further improve work efficiency.

When finely adjusting the proximity position A, that is, when changing the distance between the third calender roll 12c and the main body 42 of the press roll 38, first, the piston rod 51 of the cylinder 49 is retracted and the press is performed. The gripping member 40 is swung backward until the roll 38 reaches the delivery position C. As a result, the contact plate 25 is separated from the eccentric cam 58,
58 rotations are possible. Next, the motor 59 is operated to rotate the rotary shaft 60 and the worm 62, and thereby the worm wheel 57 and the eccentric cam 58 are rotated about the rotary shaft 56 by a predetermined angle. As a result, the distance from the rotation axis of the rotating shaft 56 to the outer peripheral position of the eccentric cam 58 that abuts on the abutting plate 25 changes, but when the distance reaches a desired value indicated by the encoder, the motor 59 operates. To stop. Next, the piston rod 51 of the cylinder 49 is projected and the gripping member 40
Is rocked until the contact plate 25 contacts the outer periphery of the eccentric cam 58. In this way, the proximity position A of the gripping member 40 can be easily and highly accurately finely adjusted by the rotation of the eccentric cam 58.

[0021]

As described above, according to the present invention, it is possible to improve the efficiency of press roll replacement work while saving labor.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged front view of the vicinity of a grip member.

FIG. 3 is a side view of an exchange cart.

FIG. 4 is an enlarged front view of the vicinity of a delivery member.

[Explanation of symbols]

 12 ... Calendar roll 38 ... Press roll 40 ... Gripping member 49 ... Movement means 55 ... Adjustment means 58 ... Eccentric cam 63 ... Rotation mechanism 73 ... Receiving base 75 ... Delivery means 94 ... Delivery member 95 ... Elevating means A ... Proximity position B ... Separation position C ... Delivery position F ... Standby position

Claims (2)

[Claims] 1. A gripping member capable of gripping both axial end portions of a press roll rotating around a rotation axis parallel to the axis of the calender roll, and a calender and a proximity position where the press roll is close to the calender roll. Moving means for moving between a separated position separated from the roll,
At a delivery position near the separation position, a cradle for receiving the press roll from the gripping member and supporting it from below, a carrying-out means for unloading the cradle supporting the press roll, and a press roll for the next use installed immediately above the delivery position And a delivery member capable of gripping both axial ends of the delivery member, and the delivery member is lowered to deliver the press roll for next use supported on the delivery platform from the delivery platform to the delivery member at the delivery position. When the delivery member is raised to the standby position and the press roll delivered from the gripping member to the cradle is carried out together with the pedestal by the unloading means, the delivery member is lowered to become an empty gripping member and the press roll to be used next. An apparatus for exchanging a press roll, comprising: an elevating means for delivering. 2. A circle in which adjusting means for finely adjusting the proximity position of the gripping member is further provided, and the adjusting means can be rotated around an axis parallel to the rotation axis of the press roll, and the gripping member abuts on the outer circumference. 2. The press roll exchanging device according to claim 1, comprising a plate-shaped eccentric cam and a rotating mechanism for rotating the eccentric cam.