KR20230127033A - Turntable support device of the material transfer system - Google Patents

Abstract

The present invention relates to a turntable support device for a material transfer system, capable of stably and strongly supporting a turntable normally and reversely rotating to transfer various kinds of materials, such as a press material and the like by a ring bearing. The turntable support device for a material transfer system includes: a base unit (3) having multiple height adjusting units installed in the lower part; a plate (4) horizontally installed in the upper part of the base unit (3); an outer fixing ring (6) fixed to the upper surface of the plate (4) by multiple coupling members (5); an inner wheel (8) connected to the inner circumference of the outer fixing ring (6) by multiple steel balls (7); an inner wheel gear (9) formed on the entire inner circumference of the inner wheel (8); the turntable (11) fixed to the upper surface of the inner wheel (8) by the multiple coupling members (10); a sub motor (12) fixed to the plate (4); and a pinion gear (14) fixed to a rotation shaft (13) of the sub motor (12) and connected to the inner wheel gear (9). The upper surface of the inner wheel (9), to which the turntable (11) is fixed, is formed to not disturb the rotation of the turntable (11) by protruding upward 3-100 mm above the upper surface of the outer fixing ring (6).

Description

Turntable support device of the material transfer system

The present invention relates to a turntable support device of a material transport system, and more particularly, to achieve stable and solid support by supporting a turntable that rotates forward and backward with a ring bearing to transfer a material (including a press material).

In general, a press automation system includes a loading process in which loaded press materials are transported and put into a mold of a press (press machine), a punching (molding) process in which the material brought into the mold is punched out with a press, and the punched material is discharged from the mold. The process of taking out (discharging) and the process of bringing the material to be discharged into the next press and then punching and taking it out are continuously performed. Materials can be brought in and out of the mold, but many workers are required, and repetitive work not only causes musculoskeletal disorders to workers, but also reduces productivity and poses a risk of safety accidents. It achieves the transfer, import and export of press materials.

Since the articulated robot has a long arm length and a large working radius, the installation distance between presses increases, and the moving line of material between processes is lengthened, so speed and productivity are low, and equipment and maintenance costs are high. There is a problem that profitability decreases as it is consumed.

On the other hand, by installing a plate on the upper part of the base of the material conveying system, installing a turntable on the upper part of the plate, and installing a transfer table on the upper part of the turntable, the material conveying arm is configured to perform linear reciprocating motion, thereby rotating the adsorbed material in the conveying direction. It is a repetitive motion of moving forward at the same time, bringing it into a desired location or place, such as a mold of a press machine, and then returning to a reverse action. A press material transport system has been devised to maximize material transfer efficiency and greatly reduce vibration and noise, as material is brought in/out with the shortest moving line, but a plurality of balls on the upper surface of the plate Plungers are installed at equal intervals to support the turntable so that even if the center of gravity changes due to material transfer, the turntable rotating forward and backward is stably supported. However, since a plurality of ball plungers are used to support the turntable, the overall configuration is complicated, the service life is shortened, and precision control is difficult and maintenance costs are high.

Republic of Korea Patent Publication No. 10-2012-0024629 (Title of Invention: Free Ball Bearing, Support Table, Transfer Equipment and Turntable, 2012. 03. 14. Patent Publication) Republic of Korea Patent Registration No. 10-1319951 (Title of Invention: Free Ball Bearing, Bearing Device, Support Table, Transfer Equipment, and Turntable, 2013. 10. 21. Patent Publication) Republic of Korea Utility Model Publication No. 20-1998-0045006 (Title of Invention: Motor Support Device for Shanghai-Dong Type Turntable, Utility Model Publication on September 25, 1998)

The problem to be solved by the present invention is to provide a turntable support device for a material transfer system in which stable and solid support is achieved by supporting a turntable that rotates forward and backward to transfer materials such as press materials with a ring bearing.

The turntable support device of the material transport system of the present invention includes a plate installed horizontally on the upper part of the base, an outer fixing ring fixed to the upper surface of the plate by a plurality of fastening members, and an inner ring coupled to the inner circumferential surface of the outer fixing ring with a plurality of steel balls. And, an inner ring gear formed on the entire inner circumferential surface of the inner ring, a turntable fixed to the upper surface of the inner ring with a plurality of fastening members, a servo motor fixed to the plate, and an inner ring gear fixed to the rotation shaft of the servo motor protruding above the plate It includes a pinion gear geared to.

The inner ring may protrude 3 to 100 mm higher than the outer fixed ring to prevent rotational resistance or interference of the turntable.

The pinion gear and the inner ring gear are configured to adjust the meshing degree.

A fixing plate attached to the top of the servomotor, a plurality of long holes formed in the fixing plate, a plurality of screw holes formed on one side of the fixing plate, and a plurality of through holes fixed to the bottom surface of the plate to which the servomotor is fixed It includes a support plate and a fastening member that is inserted into the through hole and then fastened to the screw hole of the fixing plate and is prevented from loosening by an anti-loosening nut.

An auxiliary ring inserted and fixed between the inner ring and the turntable is further included.

It further includes buffer holes installed on both sides of the upper surface of the plate and a stopper fixed to one side of the bottom surface of the turntable and stopping the turntable from excessively rotating by the buffer holes.

A rotation angle of the turntable may be 180 to 270°.

A rack gear with a pair of front and rear LM rails fixed to the upper surface of the turntable, a transfer table installed on the upper surface of the LM block slidingly coupled to the LM rail, a geared motor installed inside the transfer table, and a geared motor It further includes a helical gear fixed to the rotating shaft and meshed with the rack gear, and a lifting unit installed behind the transfer table and raising and lowering the arm.

The elevating unit includes a plurality of LM rails vertically installed in parallel on the front surface of the vertical plate, a ball screw and an LM block coupled to the LM rail for sliding motion, an arm fixed to the front surface of the LM block, and upper and lower brackets fixed to the vertical plate A ball screw installed on the axis, a driven timing pulley fixed to the lower end of the ball screw, a driving timing pulley inserted into and fixed to the rotating shaft of the lifting motor installed on the transfer table, and a timing belt connecting the driven timing pulley and the driving timing pulley. And, an arm fixed to the front of the ball nut screwed to the ball screw, a gripper installed at the front end of the arm and detached with a bolt, a plurality of suction/detachment devices installed on the gripper, and a material detection sensor.

The present invention has an effect of firmly and stably supporting the turntable 11 rotating forward and backward by a ring bearing composed of an inner ring 8 and an outer fixed ring 6.

In the present invention, since the turntable 11 is firmly supported by a ring bearing that also serves as a shaft member, there is no need to configure a separate rotation shaft, so installation is simple, and even if the center of gravity changes greatly according to the transfer of the material (S), the turntable 11 Since it is supported horizontally, deflection or vibration is prevented, and smooth rotational motion of the turntable 11 is provided.

The present invention has effects such as maximizing material transfer efficiency by transporting materials (S) in the shortest moving line using the turntable 11 installed above the plate 4 so that they can be brought in / taken out.

In the present invention, since the pinion gear 14 and the inner ring gear 9 to which the pinion gear 14 is meshed are located inside the external fixing ring 6 without being exposed to the outside, there is an effect of improving safety.

Since the turntable 11 of the present invention is stably supported by the inner ring 8 and the outer fixing ring 6, it is prevented from deteriorating control precision due to vibration, tolerance due to clearance, left and right vibration, etc., and its service life is greatly extended. It is a very useful invention that has effects such as greatly reducing maintenance costs.

Figure 1: a perspective view showing an example of the present invention.
Figure 2: A plan view showing an example of the present invention.
Figure 3: An exploded perspective view of main parts shown as an example of the present invention.
4: A perspective view of a ring bearing shown as an example of the present invention.
5: A plan view of a ring bearing shown as an example of the present invention.
6: A cross-sectional view of a ring bearing shown as an example of the present invention.
7: A partial cross-sectional view of a state in which a ring bearing shown as an example of the present invention is installed.
Figure 8: a perspective view of the lifting unit shown as an example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention, the same components in the drawings are described with the same reference numerals as much as possible, and specific descriptions of related well-known configurations or functions are omitted so as not to obscure the subject matter of the present invention. In addition, the accompanying drawings Matters expressed in may be different from the form actually implemented in the drawings schematically for easily explaining the embodiments of the present invention.

1 is a perspective view of a turntable support device 1 of a material transport system shown as an example of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an exploded perspective view of main parts, and FIG. 7 is a partial cross-sectional view of a state in which a ring bearing is installed. A base (3) on which a plurality of height adjusting means (2) is installed at the bottom, a plate (4) installed horizontally on top of the base (3), and a plurality of fastening members (5) on the upper surface of the plate (4) An outer ring 6 fixed by ), an inner ring 8 coupled to a plurality of steel balls 7 on the inner circumferential surface of the outer fixed ring 6, and an inner ring gear formed on the entire inner circumferential surface of the inner ring 8 ( 9), the turntable 11 fixed to the upper surface of the inner ring 8 with a plurality of fastening members 10, the servomotor 12 fixed to the plate 4, and the rotation shaft of the servomotor 12 ( 13) and includes a pinion gear 14 geared to the inner ring gear 9.

The upper surface of the inner ring 8 may be configured to protrude higher than the upper surface of the outer fixed ring 6 by a predetermined height, for example, 3 to 100 mm, so as not to interfere with the rotation of the turntable 11.

In the above, the outer fixed ring 6 and the inner ring 8 coupled by the steel ball 7 may be ring gears.

The outer fixing ring 6 is a fixed body fixed to the upper surface of the plate 4, and the inner ring 8 is a rotating body fixed so that the turntable 11 can rotate. The steel ball 7 installed between (8) supports the turntable 11 firmly while helping the smooth rotation of the inner ring 8 while rolling while the inner ring 8 rotates by the servo motor 12. .

Figure 4 is an external perspective view of an external fixed ring 6 and an inner ring 8 constituting the ring bearing of the present invention, Figure 5 is a plan view thereof, and Figure 6 is a cross-sectional view showing a large external fixed ring 6 and , It is coupled with a plurality of steel balls 7 to the inner periphery of the outer fixed ring 6, and the inner circumferential surface (inner periphery) of the outer fixed ring 6 and the outer circumferential surface of the inner ring 8 (outer periphery) facing each other as shown in FIG. On the periphery, semicircular rolling grooves 15 are formed, respectively, so that ball-shaped steel balls 7 are coupled to perform rolling motion.

In the outer fixing ring 6, through holes 19 penetrating vertically are formed at equal intervals so that they can be fixed by contacting the upper surface of the plate 4 and then fastening with the fastening member 10, and the inner ring 8 The screw holes 20 are formed at regular intervals on the upper surface of the ) to fix the turntable 11 with a plurality of fastening members 10.

The inner ring 8 has a large inner diameter through hole 8a formed in the center while the inner ring gear 8 is formed on the entire inner circumferential surface.

The inner ring 8 is configured to rise and protrude higher than the outer fixed ring 6 so as not to interfere with rotational resistance or rotation of the turntable 11.

For example, the upper surface of the inner ring 8 is configured to protrude upward by 3 to 100 mm than the upper surface of the outer fixed ring 6, and the bottom surface of the inner ring 8 is 3 to 100 mm higher than the bottom surface of the outer fixed ring 6. It is preferable to configure so as not to interfere with the rotation of the turntable 11 fixed to the upper surface of the inner ring 8 by raising it.

At least one nipple lubricating hole 16 capable of lubricating oil through a steel ball 7 and a rolling groove 15 is installed on the outer fixing ring 6, and the outer fixing ring 6 and the inner ring 8 The upper and lower parts of ) are sealed with upper and lower sealing covers 17 and 18 so that the lubricating oil injected into the rolling groove 15 in which the steel ball 7 and the steel ball 7 roll is not leaked to the outside. .

The steel balls 7 may be installed in contact with each other or spaced apart from each other at predetermined intervals.

As shown in FIG. 7 , a through hole 4a is formed in the plate 4 so that the rotary shaft 13 of the servomotor 12 can ascend.

The pinion gear 14 and the inner ring gear 8 are configured to adjust the meshing degree. For example, the fixing plate 21 attached to the upper part of the servomotor 12 is formed in a plurality of long holes 22, so that the clearance of the long holes 22 when fixing to the plate 4 with a plurality of fastening members 23 It is configured so that the installation position of the servomotor 12 can be moved.

A plurality of screw holes 24 are formed on one side of the fixing plate 21, and a support plate 26 having a plurality of through holes 25 formed in a horizontal direction is fixed to the bottom surface of the plate 4, and the through holes ( 25) by inserting the fastening member 27 into the screw hole 24 of the fixing plate 21 to control the position of the servomotor 12. The pinion gear 14 and the inner ring gear 8 are matched By adjusting and then fastening with the anti-loosening nut 28 to prevent the loosening of the fastening member 27, the degree of engagement between the pinion gear 14 and the inner ring gear 8 is precisely adjusted, and in this state, a plurality of fastenings When the member 23 is inserted into the long hole 22 and then fastened to the plate 4, the servomotor 12 is fixed.

The turntable 11 is placed on the upper surface of the outer fixing ring 6 and then fastened and fixed with a plurality of fastening members 10, so that when the servo motor 12 rotates forward or backward, the inner ring gear 8 rotates forward. Rotates or rotates counterclockwise, and the inner ring 8 engaged with the inner ring gear 8 and the turntable 11 fixed to the inner ring rotate reversely or forwardly.

In the above, when the pinion gear 14 rotates clockwise at a predetermined angle, the inner ring gear 8 meshed with it rotates at a predetermined angle counterclockwise, and the inner ring 8 and the turntable fixed to the upper part of the inner ring 8 ( 11) It also rotates at a predetermined angle in a counterclockwise direction.

An auxiliary ring 29 may be inserted and fixed between the inner ring 8 and the turntable 11. The auxiliary ring 29 may be helpful in flat fixing (coupling) or uniform fixing (coupling) of the inner ring 8 and the turntable 11, and the fixing (coupling) degree may be improved.

The inner ring 8, the turntable 11, and the auxiliary ring 29 at positions corresponding to the screw holes 19 formed on the upper surface of the inner ring 8 at regular intervals have holes through which the fastening member 5 can be inserted. are formed respectively.

Buffer holes 31 and 32 are installed on both sides of the upper surface of the plate 4, and the turntable 11 is excessively rotated by the buffer holes 31 and 32 on one side of the bottom surface of the turntable 11. A stopper 33 to stop so as not to do so is installed.

The shock absorbers 31 and 32 may be composed of at least one or more inner absorbers or springs, or rubber or silicon buffers and brackets to which they are fixed.

The turntable 11 of the present invention rotates forward and backward in the section (rotation angle) between the buffer sphere 31 and the buffer sphere 32, and the rotation angle may be 180 to 270 °.

The turntable 11 is configured with a straight line portion of a predetermined length protruding from both sides of the circular portion fixed to the inner ring 8 so that an LM guide having a length considering the material transport distance can be installed.

A pair of front and rear LM rails 35 and 36 and one rack gear 37 are fixed to the upper surface of the turntable 11 with support members 38, 39, and 40 and maintained at a predetermined height, A transfer table 43 is installed on the upper surface of the LM blocks 41 and 42 that are slidably coupled to the LM rails 35 and 36, and the servo motor or geared motor 44 installed inside the transfer table 43 A helical gear 45 meshed with the rack gear 37 is installed on the rotating shaft, and thus the transfer table 43 moves in a straight line in the longitudinal direction of the LM rails 35 and 36 according to the forward and reverse rotation of the geared motor 44. It is configured so that it can reciprocate.

At the rear of the transfer table 43, a lifting unit 50 for raising and lowering the material transfer arm 48 is vertically installed.

In the lifting unit 50, as shown in FIG. 8, a plurality of LM rails 52, 53, 54 and a ball screw 46 are vertically installed in parallel on the front surface of the vertical plate 51, and the LM rail 52 Arms 48 are fixed to the front of the LM blocks 55, 56, and 57 that are coupled to (53) and 54 and slide, and the brackets 58 fixed to the top and bottom of the vertical plate 51 have balls The upper and lower parts of the screw 46 are shaft-installed, and a driven timing pulley 49 is fitted and fixed to the lower end of the ball screw 46, and the driven timing pulley 59 is a lift motor 60 installed on the transfer table 43. The ball nut 47 screwed to the ball screw 46 is connected to the drive timing pulley 61 and the timing belt 62 that are inserted into and fixed to the rotation shaft of the , and the arm 48 is fixed to the arm 48 It is configured to be able to move up and down, and at the front end of the arm 48, a gripper 65 composed of a plurality of suction/detachment devices 63 for adsorbing and desorbing the material S and a material detection sensor 64 is attached to the bolt 66 It is configured to be detachable with, and is configured to facilitate replacement and / or repair of the gripper 65, the suction/detachment 63, and the material sensor 64.

A joint 68 may be formed in the middle of the arm 48 so that the gripper 65 can be bent at a predetermined angle, and accordingly, the transfer material is also bent at a predetermined angle by the joint motion and transferred.

A rotation shaft is installed inside the arm 48, but the output shaft of the reducer 70 connected to the motor 69 is shaft-connected to the rear end of the rotation shaft to consider the molding angle or the loading angle of the material S. Arm 48 ), the gripper 65, and the material S rotated at a predetermined angle, or can be configured so that they can be carried in or taken out of the press mold while rotating at a predetermined angle.

In the present invention, when the material (S) is adsorbed at a predetermined position and then transported and brought into the press mold, the transfer table 43, the arm 48, and the gripper 65 are moved by the rotational operation of the geared motor 44. The turntable 11 moves forward or rotates at a predetermined angle by the servomotor 12 to move the suction/detachment tool 63 onto the material S at a predetermined position, and the lifting motor 60 rotates to move the arm 48 and When the adsorption/desorption port 63 descends and the material detection sensor 64 detects the material, when the adsorption/desorption port 63 adsorbs the material S, the lifting motor 60 reversely rotates and the arm 48 absorbs the suction. The release port 63 rises to a predetermined height, and the geared motor 44 reversely rotates, and the transfer table 43, the arm 48, and the material S move backward, and the transfer table 43 is moved by the turn table 11. The arm 48 and the material (S) including the rotate 180 ° and continue to move, and when the material (S) is transferred onto the press mold, which is the target position, the transfer table 43 and the turntable 11 stop and the lift motor ( 60) rotates and the arm 48, the adsorption/detachment 63, and the material S descend, and when the material S is seated on the press mold, the lifting motor 60 reversely rotates to a predetermined height so that the arm 48 And the adsorption/desorption port 63 rises, and then the transfer table 43 and the turntable 11 reversely operate so that the arm 48 and the adsorption/desorption port 63 return, and the next press material is repeatedly transported in the above process It does. Reference numeral 71 is a protective cover, and 72 is a cable tray.

In the present invention, safety is improved because the pinion gear 14 and the inner ring gear 9 meshed with the pinion gear 14 are located inside the external fixing ring 6 without being exposed to the outside.

In the present invention, since the turntable (11) rotating forward and backward is firmly and stably supported by a ring bearing composed of an inner ring (8) and an outer fixed ring (6), control precision is reduced due to vibration, tolerance due to clearance, left and right vibration, etc. This is prevented, the service life is greatly extended, and maintenance costs are also greatly reduced.

In the present invention, since the turntable 11 is firmly supported by a ring bearing that also serves as a shaft member, there is no need to configure a separate rotation shaft, so installation is simple, and even if the center of gravity changes greatly according to the transfer of the material (S), the turntable 11 Since it is supported horizontally, deflection or vibration is prevented, and smooth rotational motion of the turntable 11 is provided.

The present invention maximizes the material transfer efficiency by transporting the material (S) through the shortest moving line using the turntable 11 installed above the plate 4 so that it can be brought in / taken out.

The present invention described above is not limited to the present embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention, which is in the technical field to which the present invention belongs. It is self-evident to those skilled in the art.

(1)--turntable support device (2)--height adjusting means
(3)--base (4)--plate
(5)(10)(23)(27)--fastening member (6)--external fixing ring
(7)--Steel ball (8)--Inner ring
(9)--inner ring gear (11)--turntable
(12)--servo motor (13)-rotation shaft
(14)--Pinion gear (15)--Cloud groove
(16)--oiler (17)(18)--sealing cover
(19) (25)-- through hole (20) (24)-- screw hole
(21)--fixing plate (22)--long hole
(26)--support plate (28)--anti-loosening nut
(29)--auxiliary ring (31)(32)--buffer
(33)--Stopper (35)(36)(52)(53)(54)--LM rail
(37)--rack gear (38) (39) (40)--support member
(41)(42)(55)(56)(57)--LM block (43)--transfer table
(44)--geared motor (45)--helical gear
(46)--ball screw (47)--ball nut
(48)-arm (50)-elevating unit
(51)--vertical plate (58)--bracket
(59) (61)--timing pulley (60)--elevating motor
(62)--timing belt (63)--adsorption/detachment
(64)--Material detection sensor (65)--Gripper
(66)--bolt (69)--rotation motor
(70)--reducer (S)--material

Claims (8)

Plate installed horizontally on top of the base;
An external fixing ring fixed to the upper surface of the plate with a plurality of fastening members;
An inner ring coupled to a plurality of steel balls on the inner circumferential surface of the outer fixed ring;
An inner ring gear formed on the entire inner circumferential surface of the inner ring;
A turntable fixed to the upper surface of the inner ring with a plurality of fastening members;
A servomotor fixed to the plate;
A pinion gear fixed to the rotating shaft of the servomotor and geared to the inner ring gear;
Turntable support device of the material transport system comprising a. According to claim 1:
The turntable support device of the material transport system, characterized in that the inner ring protrudes upward by 3 to 100 mm than the outer fixed ring. According to claim 1 or claim 2:
a fixed plate attached to the top of the servo motor;
A plurality of long holes formed in the fixing plate;
A plurality of screw holes formed on one side of the fixing plate;
a support plate fixed to the bottom surface of the plate to which the servomotor is fixed and having a plurality of through holes;
A fastening member that is inserted into the through hole and then fastened to the screw hole of the fixing plate and is prevented from loosening with an anti-loosening nut;
Turntable support device of the material transport system comprising a. According to claim 1 or claim 2:
Auxiliary ring inserted and fixed between the inner ring and the turntable;
Turntable support device of the material transport system further comprising a. According to claim 1 or claim 2:
buffers installed on both sides of the upper surface of the plate;
a stopper fixed to one side of the bottom surface of the turntable and stopping the turntable from excessive rotation by means of the shock absorber;
Turntable support device of the material transport system further comprising a. According to claim 1 or claim 2:
Turntable support device of the material transport system, characterized in that the rotation angle of the turntable is 180 ~ 270 °. According to claim 1 or claim 2:
A rack gear with a pair of front and rear LM rails fixed to the upper surface of the turntable;
A transfer table installed on the upper surface of the LM block that is slidably coupled to the LM rail;
Geared motor installed inside the transfer table;
A helical gear fixed to the rotating shaft of the geared motor and meshed with the rack gear, and
A lifting unit installed behind the transfer table and raising and lowering the arm;
Turntable support device of the material transport system comprising a. According to claim 7:
The lifting unit,
Multiple LM rails and ball screws vertically and parallelly installed on the front of the vertical plate;
An LM block coupled to the LM rail and sliding;
An arm fixed to the front of the LM block;
A ball screw installed in the upper and lower brackets fixed to the vertical plate;
A driven timing pulley fixed to the lower end of the ball screw;
a drive timing pulley fixed to the rotation shaft of the lift motor installed on the transfer table;
a timing belt connecting the driven timing pulley and the driving timing pulley;
An arm fixed to the front of the ball nut screwed into the ball screw;
A gripper installed at the front end of the arm and detachable with bolts;
A plurality of suction and desorption devices and material detection sensors installed in the gripper;
Turntable support device of the material transport system comprising a.