KR101566399B1 - Compact Type Drum Drive - Google Patents

Abstract

The present invention relates to a compact molding drum drive. The compact molding drum drive of the present invention comprises: a drive allowing a drum connected to a drum shaft to move along the drum shaft in an axial direction; a drive allowing a finger type device used during a turn-up process when molding a tire to move along the axial direction; and a motor allowing a molding drum connected to the drum shaft to gyrate, thereby remarkably reducing size.

Description

A compact molding drum drive {Compact Type Drum Drive}

The present invention relates to a compact type tire building drive in which a tire building drum for molding a green case using a semi-finished product of a rubber tire is made compact, more specifically, a drum connected to the drum shaft is provided with a drum shaft A drive that moves along the axial direction, a drive that moves the finger type machine used in turning up the tire during axial turning, and a motor that turns the drum connected to the drum shaft To a compact molding drum drive which is greatly reduced in size.

Turn-up using a finger device Drum tire building drum drive is known from Korean Patent Publication No. 10-2011-0044200. The known forming drum drive is a principle in which the shaft connected to the drum and the shaft connected to the finger type device operate in the same manner and the drive portion also operates symmetrically with each drum center portion symmetrical. Such a molding drum drive is a drive that allows the drum and the finger to move symmetrically in the axial direction using two ball screws so that the tire can be formed by using the finger device during turn-up during tire molding.

However, in the known forming drum drive, since the length of the ball screw is changed by a required moving distance of the forming drum and the finger type apparatus, if the moving distance is long, the ball screw length becomes long. There is a problem in that the size of the apparatus becomes large.

Korean Patent Laid-Open No. 10-2011-0044200

SUMMARY OF THE INVENTION It is an object of the present invention, which has been devised to solve the above problems, to provide a turn-up drum tire building drum drive using a finger device according to the related art, And to provide a tire building drum drive which can be constructed more compactly.

According to an aspect of the present invention, there is provided a tire building drum drive for driving a pair of building drums for molding a tire green case using semi-finished products, comprising: a drum shaft in which the pair of building drums are spaced apart from each other; A drum shaft motor for rotating the drum shaft; A first shaft integrally connected to one side of the molding drum and concentric with the inside of the drum shaft; A second shaft integrally connected to one side of the molding drum and concentric with the inside of the first shaft; A first full push rod integrally fixed to the other side of the first shaft; A second full push rod integrally fixed to the other side of the second shaft; A finger shaft concentrically disposed inside the second full push rod; Wherein the first full push rod and the second full push rod are screwed to both sides with respect to a central portion thereof and threaded in different directions are formed on both sides with respect to the center portion; A ball screw motor for rotating the ball screw in a forward direction or a reverse direction; A finger screw which is integral with the finger shaft and has nodal points in different directions on both sides with respect to a central portion thereof and in which a pair of finger type devices moved by the thread are arranged on both sides; And a finger motor for rotating the finger shaft in a forward direction or a reverse direction.

The pair of ball screws are parallel to each other and rotate in the same direction by the ball screw motor.

According to the present invention, the turn-up drum tire building drum drive using the finger device according to the related art increases the distance of the ball screw connected to the drum by a necessary drum movement distance, and occupies a lot of space. To solve this disadvantage, The present invention can provide a tire building drum drive having the same structure.

1 is a schematic plan view of a tire building drum drive according to an embodiment of the present invention.
Fig. 2 is a schematic side view showing the connection relationship between the drum shaft, the first and second ball screws, and the first motor in Fig. 1. Fig.
FIG. 3 is a schematic plan view of the tire building drum drive of FIG. 1 with semi-finished products disposed on the drum.
Figure 4 is a schematic plan view of the tire-type drum drive of Figure 1 with the finger-type device lifted.
5A to 5D are top views of parts used in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components, and the same reference numerals will be used to designate the same or similar components. Detailed descriptions of known functions and configurations are omitted.

1, 3, and 4, reference numeral 100 designates a tire building drum drive according to an embodiment of the present invention.

The molding of the green case by the semi-finished product takes place in the molding drum 102 disposed symmetrically around the drum shaft 101. The two shaped drums 102 arranged symmetrically move axially along the drum shaft 101 and each forming drum 102 includes a finger type device 103. The symmetrically disposed forming drum 102 and the finger type apparatus 103 included in the forming drum 102 are moved in the axial direction by the tire building drum drive 100 according to the present invention.

A half of the forming drum 102 is connected to an inner portion of the drum shaft 101 by a first connecting key 108 and the other half of the forming drum 102 is connected by a second connecting key 109 And is connected to an inner portion of the drum shaft 101. The forming drums 102 are fixed to the first shaft 10 and the second shaft 11, respectively, by the connecting keys 108 and 109, respectively. The first shaft 10 and the second shaft 11 are integrally connected to the first full push rod 7 and the second full push rod 8, respectively. The first ball screw 1 and the second ball screw 2 are moved in the same direction by the first belt 12 that transmits the rotational force of the first motor 4 as the first full push motor 4 is driven, And the forming drum 102 moves in the axial direction as the first pull-push rod 7 and the second pull-push rod 8 approach or separate from each other. At this time, the first ball screw 1 and the second ball screw 2 may be replaced by a single ball screw. In this case, the second ball screw 2 is replaced with a sliding rod to prevent the first full push rod 7 and the second full push rod 8 from being subjected to a bending force.

The finger type device 103 included in the forming drum 102 is connected to the finger nut 105 and the third connection key 110 by a finger type coupling device 106, The finger shaft 9 is driven as the finger motor 6 is driven and the finger screws 3 constituted as one shaft with the finger shaft 9 are driven to be connected to the forming drum 102 The included finger type device 103 is moved axially and symmetrically. That is, the finger screws (3) are formed in opposite directions with respect to the center of the finger screws (3), and the finger nuts (105) disposed on both sides with respect to the center portion move in the direction of approaching or separating from each other.

The drum shaft 5 connected by the drum shaft 101 and the second belt 113 is capable of rotating the forming drum 102 during tire forming.

2, the first full push motor 4 is connected to the first ball screw 1 and the second ball screw 2 by a motor-driven belt 12, and the first full push motor 4 4, the first ball screw 1 and the second ball screw 2 can rotate at the same speed and in the same direction. The first ball screw 1 and the second ball screw 2 are formed so that the directions of the threads are opposite to each other with respect to the central portion of the first ball screw 1 and the second ball screw 2, 2, the first full push rod 7 and the second full push rod 8 disposed on both sides with respect to the center are opposite in moving direction. That is, the first pull-push rod 7 and the second pull-push rod 8 move toward or away from each other.

Fig. 4 is a simplified illustration of the turn-up operation in green case molding. The first ball screw 1 and the second ball screw 2 connected to the tire building drum 102 are moved in the axial direction by the first full push motor 4 during the turn-up operation for forming the green case. As a result, the tire building drum 102 is moved symmetrically along the axial direction, and the axial width of the building drum 102 is reduced in accordance with the turn-up operation. When the turn-up operation is completed, each drum is symmetrically moved along the axial direction by the first full push motor 4, and the axial width thereof is increased.

The finger type device 103 included in the tire building drum 102 is connected to the finger type coupling device 106 and the finger type coupling device 106 is connected to the finger Is fixed integrally with the nut (105). The finger nose 105 is engaged with a finger shaft 9 rotatable within the drum shaft 101. The finger shaft 9 is transmitted rotational force by the finger motor 6 and the third belt 14. Therefore, when the finger shaft 9 is rotated according to the driving of the finger motor 6, the finger screw 3 integral with the finger shaft 9 rotates together. As a result, the finger-type devices 3 connected to the third ball screw 3 move toward or away from each other. Therefore, the finger nut 105 and the third connecting part 107 coupled to the finger type device 3 are moved to the center of the forming drum 102 by the rotation of the finger screw 3, Is raised above the semi-finished product 201 by the bearing device 104 installed in the main body 103, thereby pressing the semi-finished product.

The tire building drum drive provided by the present invention differs from the driving method of the building drum 102 and the driving method of the finger type apparatus 103 included in the building drum 102 to form the tire building drum 102 And the space occupied by the drum drive can be made more compact by reducing the length of the ball screw.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It can be understood that

1: first ball screw 2: second ball screw
3: Finger screw 4: Full push motor
5: Drum shaft motor 6: Finger motor
7: first full push rod 8: second full push rod
9: finger shaft 10: first shaft
11: second shaft 12: first belt
13: second belt 14: third belt
100: compact molding drum drive 101: drum shaft
102: forming drum 103: finger type device
104: Bearing device 105: Finger nut
106: finger type connection device 107: main housing
108: first connection key 109: second connection key
110: Third connection key 201: Semi-finished product

Claims (2)

A tire building drum drive for driving a pair of building drums for molding a tire green case using semi-finished products,
A drum shaft in which the pair of forming drums are disposed apart from each other;
A drum shaft motor for rotating the drum shaft;
A first shaft integrally connected to one side of the molding drum and concentric with the inside of the drum shaft;
A second shaft integrally connected to one side of the molding drum and concentric with the inside of the first shaft;
A first full push rod integrally fixed to the other side of the first shaft;
A second full push rod integrally fixed to the other side of the second shaft;
A finger shaft concentrically disposed inside the second full push rod;
Wherein the first full push rod and the second full push rod are screwed to both sides with respect to a central portion thereof and threaded in different directions are formed on both sides with respect to the center portion;
A ball screw motor for rotating the ball screw in a forward direction or a reverse direction;
A finger screw which is integral with the finger shaft and has nodal points in different directions on both sides with respect to a central portion thereof and in which a pair of finger type devices moved by the thread are arranged on both sides; And
And a finger motor for rotating the finger shaft in a forward direction or a reverse direction.
The tire building drum drive according to claim 1, wherein the ball screws are a pair, and the pair of ball screws are parallel to each other and rotate in the same direction by the ball screw motor.

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