JP2000167945A - Pressure bonding apparatus for tire constituting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject pressure bonding apparatus capable of being constituted simply and compactly and capable of efficiently performing pressure bonding work by performing function for mutually bonding strip-like materials under pressure while venting air between the strip-like materials and function for bonding the joint parts of the strip-like materials under pressure by one pressure roller. SOLUTION: Pressure bonding apparatuses 10 are arranged under a molding drum 2 and a pair of left and right pressure rollers 11 are provided to the central part in the width direction of the molding drum 2. The pressure rollers 11 are provided on the roller support members 17 movable in parallel to the drum axis 3 of the molding drum 2 and provided so as to be capable of approaching and separating with respect to the cylindrical surface of the molding drum 2 by two support rods 16 and cylinders 18 through roller bearing members 13 in a rotatable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for crimping a tire component such as an unvulcanized rubber sheet, and more particularly, to a method for removing air between strips to be laminated and pasted on a forming drum. The present invention relates to a crimping apparatus for a tire component, which is capable of performing crimping of a joint member and crimping of a joint at a band-shaped material terminal portion by one crimping roller.

[0002]

2. Description of the Related Art In general, when bonding tire constituent members such as unvulcanized rubber sheets, they are often pressed by a roller-shaped pressing member. Particularly, in a tire forming process, a plurality of tires are formed on a forming drum of a tire forming machine. When the above rubber sheets are overlapped and wound in a cylindrical shape, pressure bonding rollers are diversified. In the tire forming process, it is necessary to press the rubber sheets together while bleeding air between the superposed rubber sheets, and to press the seam (splice) formed by making the rubber sheets cylindrical. .

Therefore, conventionally, the pressing drum is rotated while pressing the pressing roller, and the pressing roller is moved in parallel with the rotation axis of the pressing drum, thereby removing the air between the superposed rubber sheets and pressing the pressing roller. Then, in a state where the forming drum is stopped, another pressing roller having a rotation axis direction different from that of the pressing roller by 90 degrees is moved in parallel to the rotation axis of the forming drum while being pressed against the seam. Crimped.

[0004]

However, in the conventional tire molding machine as described above, the crimping device for crimping the rubber sheets and the crimping device for crimping the joint of the rubber sheets are independent. However, there is a problem that the apparatus is large and complicated as a whole. The purpose of this invention is
When a plurality of strip-shaped materials are stacked in a cylindrical shape, the function of pressing the strip-shaped materials together and the function of crimping the seam of the strip-shaped materials while performing air bleeding between the strip-shaped materials are combined into one unit. An object of the present invention is to provide a crimping apparatus for a tire component, which can be performed by a roller, can have a simple and compact structure, and can efficiently perform a crimping operation.

[0005]

According to the present invention, when a plurality of belt-like materials are sequentially superimposed and wound on a cylindrical outer peripheral surface of a forming drum, pressure is applied while removing air between the belt-like materials. And a crimping roller for a tire component member having a crimping roller having a terminal portion crimping function for joining and crimping the longitudinal ends of the respective band-shaped materials, wherein the crimping device is parallel to a drum shaft of the forming drum. A pressure roller is rotatably provided on a roller support member movably provided via a roller bearing member, and a rotation center axis of the pressure roller drives air between the respective band-shaped materials on the cylindrical outer peripheral surface of the forming drum. When pulling and crimping, it is parallel to the drum axis of the forming drum, and when joining the longitudinal ends of each band-shaped material and crimping, it is orthogonal to the drum axis of the forming drum. It is an Abstract by being configured to.

According to the present invention, the rotation axis direction of the pressure roller can be changed to an arbitrary angle, and the entire roller is rotatably supported by an independent axis different from the rotation center axis of the roller. The function of pressing the band-shaped materials together and the function of pressing the seam of the band-shaped material while removing air between the band-shaped materials can be performed by a single pressure roller.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of the entire tire molding machine embodying the present invention, FIG. 2 is an enlarged front view of a tire component crimping apparatus 10 showing a first embodiment of the present invention, and FIG. FIG. 1 shows a side view taken in the direction of an arrow. In FIG.
Is a scalable forming drum on which tire constituent members W such as belt-shaped rubber sheets are sequentially superimposed and wound; 3 is a drum shaft rotatably supported by a bearing 31 on a support frame 32;
Reference numeral 4 denotes a drum expanding / contracting cylinder that operates to expand / contract the forming drum 2 via the drum shaft 3. 5 is a drive motor for rotating the drum shaft, 6a and 6b are a pair of left and right bladders disposed coaxially on the left and right sides of the forming drum 2,
7a and 7b are bladder support frames, 8a and 8b are motors for moving the bladders 6a and 6b, and 9 is a pusher ring.

The crimping apparatus 10 according to the present invention is installed below the forming drum 2 as shown in FIGS. 2 and 3, and in FIG. Although the pressure roller 11 is described, in the actual embodiment, as a device for a pair of band-shaped materials W that are divided into right and left parts and wound around the center part in the width direction of the forming drum 2 at a predetermined interval. Because the forming drum 2
A pair of right and left pressure rollers 11 is provided at the center in the width direction of the roller. It is movable parallel to the drum shaft 3 (center axis) of the forming drum 2 and is provided so as to be able to approach and separate from the cylindrical surface (surface) of the forming drum 2 by two support rods 16 and the cylinder 18. The pressure roller 11 is rotatably provided on the roller support member 17 via a roller bearing member 13.

The rotation center shaft 15 of the pressure roller 11 is
When pressure is applied to the cylindrical outer peripheral surface of the forming drum 2 while evacuating the air between the band-shaped materials W, it is parallel to the drum shaft 3 (center axis) of the forming drum 2 and the longitudinal ends of the band-shaped materials W are connected to each other. When joining and crimping, it is configured to be orthogonal to the drum shaft 3 (center axis) of the forming drum 2. Therefore, the pressure roller 11 can change the direction of the rotation center axis 15 to an arbitrary angle, and when a plurality of strip-shaped materials W are successively stacked on the cylindrical outer peripheral surface of the forming drum 2 and wound, the air between the strip-shaped materials W is removed. The function of pressing the band-shaped materials W together and the function of joining the longitudinal end portions of the band-shaped materials W together and pressing the same can be shared by one pressure roller 11.

As shown in FIG. 3, guide members 20 are provided integrally on both sides of the cylinder 18 so as to be slidably fitted on a guide rod 19 provided under the guide rail 1a. Guide plates 21 are attached to side surfaces of the guide member 20, respectively.
A nut member 23 screwed to a screw shaft 22 provided under the guide rail 1a is fixed to an upper portion of the guide plate 21. One end of the screw shaft 22 is rotatably supported via a bearing 24, Sprocket 25 on the other end
And is connected via a sprocket 27 and a chain 28 to a drive shaft 26 a of a drive motor 26 installed on a side of the base frame 1. Therefore, when the drive motor 26 is driven to rotate, the pressure roller 11 is driven by the nut member 23, the guide plate 21,
It moves in the direction of the drum shaft 3 along the outer peripheral surface of the forming drum 2 via the guide member 20, the guide frame 18, and the two support rods 16.

Next, the operation of the embodiment of the present invention will be described. Note that, in the actual embodiment of the present invention, as described above, a pair of band-shaped materials W that are divided and wound right and left at a predetermined interval at the center in the width direction of the forming drum 2 are targeted. A case where a pair of left and right pressure rollers 11 are provided at the center in the width direction of the forming drum 2 will be described. As a first embodiment of the operation, a method of pressing a pair of strip-shaped materials W which are divided into right and left and wound by using a pair of right and left upright pressing rollers 11a and 11b is described with reference to FIGS. 4 (a) to 4 (d). This will be described with reference to FIG.

When winding a pair of strip-shaped materials W divided into right and left parts at a desired interval at the center in the width direction of the forming drum 2 around the cylindrical outer peripheral surface of the forming drum 2, first, FIG.
As shown in (a), after the pair of left and right band-shaped materials W are wound around the forming drum 2 with the pressure rollers 11a and 11b lowered (away from the cylindrical outer peripheral surface of the forming drum 2),
By operating the cylinder 18 while rotating the forming drum 2 to press the pressing rollers 11a and 11b against the belt-shaped material W on the outer peripheral surface of the forming drum 2, as shown in FIG. 4B, the pressing rollers 11a and 11b Is naturally changed by the frictional force with the band-shaped material W until the direction of the rotation center axis 15 becomes parallel to the drum axis 3 of the forming drum 2.

Further, as shown in FIGS. 2 and 4 (c),
By rotating the screw shaft 22 by the drive shaft 26, the pressure rollers 11a and 11b are moved in parallel to the drum shaft 3 of the forming drum 2, and are wound around a pair of left and right strip-shaped materials W and the inside thereof in advance. It is possible to press each other while sequentially removing air between the other strip-shaped materials W. Subsequently, when the seam Wx between the longitudinal ends of the band-shaped material W is crimped, as shown in FIG. 4D, the forming drum 2 is moved to a position where the pressure rollers 11a and 11b can be crimped to the seam Wx. Is rotated and then stopped, and the cylinders 18 are operated to press the pressure rollers 11a and 11b against the seam Wx.

Further, the driving motor 26 controls the screw shaft 22.
When the pressure rollers 11a and 11b are moved in parallel with the center axis 3 of the forming drum 2 by rotating the pressure rollers 11a and 11b, the pressure rollers 11a and 11b are naturally moved by the frictional force with the belt-shaped material W. Since the direction is changed to a position perpendicular to the central axis 3 of the forming drum 2, the seam portion Wx can be sequentially pressed. That is, the direction of the rollers 14 of the pressure rollers 11a and 11b can be automatically changed to an arbitrary angle by the rotational driving force and the frictional force of the forming drum 2 and the horizontal moving force and the frictional force of the roller 14, and therefore, as described above. A pair of left and right pair of pressure rollers 11a and 11b is used for both the operation of pressure-bonding the band-shaped materials and the operation of automatically pressure-bonding the joint Wx of the band-shaped material W while bleeding air between the band-shaped materials W. Can be done.

FIGS. 5 and 6 are a front view showing a second embodiment of the present invention and an enlarged explanatory view of a main part, respectively. In this embodiment, as described above, a pair of right and left pressure rollers 11 is provided.
When the pressing operation is simultaneously performed using the a and 11b, the rotating shaft 15 of the roller 14 is provided at a position eccentric to the center line XX of the roller supporting member 12, so that the forming drum 2 When moving to the center, a gap is created between the rollers, and a portion that is not pressed against the joint Wx of the strip-shaped material W may remain. In such a case, the seam Wx of the belt-shaped material W must be securely press-bonded because it may cause a failure in the product tire later. As such a measure, the upper surface of the roller support member 12 and the roller A spacer 30 having a triangular cross section is interposed between the bearing member 13 and the roller bearing member 13 for supporting the roller 14 is always rotated at a constant inclination. In such a manner that the seam portion Wx can be securely pressed.

FIGS. 7A to 7E show a method of pressing a pair of strip-shaped materials W which are divided into right and left and wound by using a pair of right and left inclined pressing rollers 11a and 11b in the second embodiment. This will be described with reference to FIG. When a pair of band-shaped materials W divided into right and left parts at a desired interval at the center in the width direction of the forming drum 2 is wound around the cylindrical outer peripheral surface of the forming drum 2, first, FIG. like,
The pressure rollers 11a and 11b are lowered (the forming drum 2
After the pair of left and right band-shaped materials W are wound around the forming drum 2 in a state of being separated from the cylindrical outer peripheral surface of the forming drum 2, the cylinder 18 is operated while rotating the forming drum 2, and the pressing rollers 11 a,
When the outer peripheral surface 11b of the forming drum 2 is pressed against the belt-shaped material W, as shown in FIG.
11b naturally changes its orientation of the rotation center axis 15 until it becomes parallel to the drum axis 3 of the forming drum 2 due to the frictional force with the belt-shaped material W.

Further, as shown in FIGS. 5 and 7 (c),
By rotating the screw shaft 22 by the drive shaft 26, the pressing rollers 11a and 11b are moved outward in parallel with the drum shaft 3 of the forming drum 2, and a pair of left and right divided strip-shaped materials W and the inside thereof are formed. While sequentially removing air between the other band-shaped materials W wound in advance, they can be pressed against each other. Then, while the rotational drive of the forming drum 2 is temporarily stopped, the pair of left and right pressure rollers 11a, 1
1b is also stopped. Subsequently, when the seam portion Wx between the longitudinal ends of the band-shaped material W is pressure-bonded, the pressure-bonding rollers 11a and 11b are lowered as shown in FIG. 7D (the cylindrical outer periphery of the forming drum 2). In a state away from the surface), the forming drum 2 is rotated to a position where the pressing rollers 11a and 11b can be pressed against the joint Wx, and then stopped.
The cylinder 18 is operated to connect the pressure roller 11 to the joint W
crimp to x.

Further, the screw shaft 22 is driven by the drive motor 26.
When the pressing rollers 11a and 11b are moved outward in parallel with the drum shaft 3 of the forming drum 2 by rotating the pressing rollers 11a and 11b, the pressing rollers 11a and 11b are rotated 90 degrees by the frictional force with the belt-shaped material W. Turning, in this state,
As shown in FIG. 7E, when the forming drum 2 is moved inward in parallel with the central axis 3 of the forming drum 2, the seam portion Wx can be successively pressed. In the case of this embodiment, as described above, a spacer 30 having a triangular cross section is interposed between the upper surface of the roller support member 12 and the roller bearing member 13, and the rollers 14 of the pair of pressure rollers 11 are set at a predetermined angle (10 degrees). Degrees to 20 degrees).
When the roller 4 comes closest, the range in which the seam Wx can be crimped can be made extremely narrow as compared with the upright type crimping roller 11 of the first embodiment.

[0019]

According to the present invention, a pressure roller is rotatably provided via a roller bearing member on a roller support member provided so as to be movable in parallel with the drum axis of the forming drum as described above. When the rotation center axis is pressed against the cylindrical outer peripheral surface of the forming drum while removing the air between each band-shaped material, it is parallel to the drum axis of the forming drum, and the longitudinal ends of each band-shaped material are joined together and pressed. At the time of this, since it is configured so as to be orthogonal to the drum axis of the forming drum, when a plurality of strip-shaped materials are cylindrically overlapped with each other, the strip-shaped materials are separated while performing air release between the strip-shaped materials. The function of crimping and the function of crimping the seam of the band-shaped material can be performed by one crimping roller, so that the structure can be simplified and compact, and the crimping work can be performed efficiently. There is an effect that can be carried out.

[Brief description of the drawings]

FIG. 1 is a front view of an entire tire molding machine embodying the present invention.

FIG. 2 is an enlarged front view of the tire component crimping apparatus according to the first embodiment of the present invention.

FIG. 3 is a side view taken along the line AA of FIG. 2;

4 (a) to 4 (d) are explanatory views showing a step of pressing a pair of strip-shaped materials which are divided into right and left and wound by using a pair of right and left upright pressing rollers.

FIG. 5 is a front view showing a second embodiment of the present invention.

FIG. 6 is an enlarged explanatory view of a main part in a second embodiment.

FIGS. 7A to 7D are explanatory views showing a step of pressing a pair of strip-shaped materials which are divided into right and left and wound around using a pair of left and right inclined pressing rollers in the second embodiment. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base frame 2 Forming drum 1a Guide rail 3 Drum shaft 4 Drum expansion / contraction cylinder 5 Drive motor 6a, 6b Bladder 7a, 7b Bladder support frame 8a, 8b Movement mode 9 Pusher ring 10 Crimping device 11 Crimping roller 12 Roller support member 13 Roller Bearing member 14 Roller 15 Rotating shaft 16 Support rod 17 Support plate 18 Guide frame 19 Guide rod 20 Guide member 21 Guide plate 22 Screw shaft 23 Nut member 24 Bearing 25 Sprocket 26 Drive motor 26a Drive shaft 27 Sprocket 28 Chain 30 Spacer W belt-shaped material

Claims (3)

[Claims] When a plurality of band-shaped materials are sequentially superimposed and wound on a cylindrical outer peripheral surface of a forming drum, a pressure-bonding function for press-bonding while removing air between the band-shaped materials, and a longitudinal end of each band-shaped material are connected. What is claimed is: 1. A device for crimping a tire component comprising a crimping roller having a terminal portion crimping function for joining and crimping, wherein a roller bearing is provided on a roller supporting member movably provided in parallel with a drum axis of said forming drum. A pressure roller is rotatably provided via a member, and the rotation center axis of the pressure roller is aligned with the drum shaft of the molding drum when pressure is applied to the cylindrical outer peripheral surface of the molding drum while removing air between the band-shaped materials. An apparatus for crimping a tire component, which is configured to be parallel to each other and to be perpendicular to the drum axis of the forming drum when joining the longitudinal ends of the respective band-shaped materials together for crimping. 2. The crimping apparatus for a tire component according to claim 1, wherein a pair of left and right pressure rollers are provided so as to be able to approach and separate from the center of the width of the forming drum. 3. A spacer having a triangular cross section is interposed between an upper surface of the roller support member and a roller bearing member.
3. The apparatus for crimping a tire component according to claim 1, wherein the roller bearing member that supports the roller is always rotated at a constant inclination.