JPH058322A - Apparatus for sticking belt-like material in tire forming machine - Google Patents

Abstract

PURPOSE:To enable linear cutting to be performed by conducting the winding under no tension at the time of winding a belt-like material around the tire forming drum, and fixing the front, rear and both sides of the cutting line at the time of cutting the belt-like material. CONSTITUTION:On the front lower side of a tire forming drum 1, a swing frame 4 capable of oscillating up and down is provided, and on the swing frame, a slide frame 8 capable of coming in and out in the longitudinal direction is provided, and on the slide frame, there is subsequently arranged a transfer belt 17 for a belt-like material B, a first, cutting table 22, a running cutter for cutting the belt-like material, and a second cutting table 26, and further on the upper surface of the first cutting table and second cutting table, suction holes 23,27 for fixing the belt-like material are made, and then clamp 21 is provided that serves to fasten the transfer surface of the transfer belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticking device for winding a belt-shaped member such as an inner liner or ply cord around a molding drum of an automobile tire and joining both ends thereof to form an endless shape. is there.

[0002]

2. Description of the Related Art As a belt-shaped member sticking device used in a primary molding machine for automobile tires, a device described in JP-A-59-207227 is known. In this device, an anvil for cutting a belt-shaped member, a conveyer for conveyance and a brake roller are sequentially arranged on one side of the top of a drum for forming a tire, and the tip of the belt-shaped member placed on the anvil at the tip of the conveyor is placed above. Adsorb and hold with a vacuum cap and lift it up, move this vacuum cap forward to convey and crimp the tip of the belt-shaped member to the tire forming drum, then release the above adsorption and rotate the tire forming drum for about one revolution. The above belt-shaped member is wound around a tire forming drum, and while holding the belt-shaped member on the anvil in this state with the vacuum cap, the belt-shaped member is cut to a predetermined length on the rear side of the holding portion. Then, while lifting the rear end of the belt-like member in front of this cutting line with the above vacuum cap, the anvil located behind the cutting line And the belt-shaped member on the conveyor are retracted together with the anvil and the conveyor to evacuate from below the vacuum cap. It is designed to be joined.

[0003]

However, in the above-mentioned device, when the belt-shaped member is wound around the drum by rotating the molding drum having the tip of the belt-shaped member fixed, the belt-shaped member is moved by the brake roller at the rear end of the conveyor. Since a tension is applied to the strip-shaped member, the thin and narrow portions of the strip-shaped member are stretched to amplify the unevenness of the thickness and width, and when cutting the strip-shaped member on the anvil, the rear side of the cutting line, that is, the conveyor side is It is fixed by the pressing member, but the front side, that is, the drum side is not fixed and is released, so the band-shaped member shifts at the time of cutting and the cutting trace bends, so the front and rear ends of the band-shaped member wound around the drum. When joining and, a gap and an extra overlap were formed at the joining portion, and correction was necessary, which made it difficult to automate the joining work.

The present invention provides a band-shaped member sticking device which can wind a band-shaped member without tension, and fix the front and rear sides of a cutting line when cutting the band-shaped member so as to cut the band-shaped member in a straight line. Is.

[0005]

A belt-shaped member sticking device for a tire molding machine according to the present invention has a swing frame long in a direction orthogonal to the drum below a front side of a tire molding drum, with a side far from the drum as a fulcrum. The swing frame is provided so as to be swingable up and down, and a slide frame that advances and retreats in the length direction is provided on the swing frame.
The traveling frame is arranged in order from the fulcrum side of the swing frame toward the drum side, and a traveling cutter for cutting the belt-shaped member is provided between the first cutting table and the second cutting table, and the first cutting table is provided. Also, a suction port for fixing the belt-shaped member is opened on each upper surface of the second cutting table facing the opposing portion, and a clamp for fixing the transfer surface of the transfer belt is provided on the upper end of the pillar erected on the slide frame. It is characterized by

[0006]

When the swing frame is located at the lower side and the slide frame is at the standby position below the front side of the molding drum, the belt-shaped member is provided on the first cutting table and the conveyor belt.
The tip of the strip-shaped member is placed on the first cutting table so that the tip of the strip member fits on the front edge of the first cutting table, and suction is applied to the suction port that opens on the upper surface of the first cutting table to fix the tip of the belt-shaped member on the first cutting table, and then slide The frame is moved forward, and further the swing frame is swung upward so that the tip of the belt-shaped member is pressed against the lower end of the drum to be stuck.

Then, while the conveying surface of the conveying belt is fixed by a clamp, the suction of the first cutting table is stopped, and in that state, the slide frame is advanced by a predetermined distance to keep the belt-shaped member stationary. The transport belt is moved forward, and the tip of the belt-shaped member is moved from above the first cutting table onto the transport surface of the transport belt. After that, the clamp is opened, and the tire forming drum and the conveying belt are synchronously rotated to wind the belt-shaped member on the conveying belt around the tire forming drum without tension, and the winding length is set to that of the forming drum. When a predetermined length shorter than the circumference, preferably a length close to the circumference, is reached, the tire forming drum and the conveyor belt are stopped.

Then, the clamp is closed again to fix the conveying surface of the conveying belt, and the slide frame is retracted in this state, so that the conveying belt, the first cutting table and the second cutting member are kept stationary with the belt-shaped member. The table is moved backward by a predetermined distance, and by this backward movement, the distance from the traveling cutter between the first cutting table and the second cutting table to the winding start point at the lower end of the tire molding drum is equal to the circumference of the tire molding drum. It is made equal to the difference between the length of the strip-shaped member and the unwound portion, that is, the length of the unwound portion.

Then, suction is applied to the suction ports opened on the upper surfaces of the first cutting table and the second cutting table to move the belt-shaped member to the first position.
After fixing to the cutting table and the second cutting table, the traveling cutter is driven to cut the belt-shaped member. After that, while advancing the slide frame, the tire building drum is rotated in synchronization with the advance of the slide frame, whereby the remaining winding of the belt-shaped member is performed without tension. Then, after this winding is completed, the intake of the second cutting table is stopped,
And stop the rotation of the molding drum and the advance of the slide frame respectively, and then lower the swing frame,
Move the slide frame back to the initial standby position.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a tire forming drum, and a belt-shaped member B (see FIGS. 3 to 10) supplied to the lower surface of the drum 1 by rotating in the counterclockwise direction on the surface of the drum 1. Wrapped around. A photoelectric element L for detecting the tip of a belt-shaped member B wound on the drum 1 is provided in front of the tire forming drum 1 (on the left side in FIG. 1), and the drum 1 is provided on the floor below the photoelectric element L. A long base 2 is installed in a direction perpendicular to the axis of. A swing frame 4 having a fulcrum 3 on the rear end side far from the drum 1 is provided on the base 2 so as to be vertically swingable, and a front end portion on the drum 1 side is swingable on the front surface of the base 2. The swing frame 4 is connected to the tip of the piston rod 6 of the attached lifting air cylinder 5, and the swing frame 4 swings up and down as the piston rod 6 moves back and forth. A screw jack may be used instead of the lifting air cylinder 5.

Rails 7 in the front-rear direction are laid on the left and right of the upper surface of the swing frame 4 (front side and rear side of the paper), and an upper slide frame 8 slides on the rails 7 via a slide block 9 on the lower surface. Can be placed freely. Also,
The transmission chain 11 is wound around the front and rear guide sprockets 10 and 10 provided on the swing frame 4, and the ends thereof are connected to the projections 12 on the lower surface of the slide frame 8. Then, the transmission chain 11 is rotated in the forward direction and the reverse direction by the transmission from the sliding motor 13 installed at the rear end of the swing frame 4.

Belt pulleys 16 and 16 are rotatably supported by brackets 15 and 15 located at the rear and central portions of the slide frame 8, and belts 17 for conveying belt-like members are provided on the front and rear pulleys 16 and 16. It is wrapped around and driven by a transport motor (not shown). On one side shaft end of the above pulleys 16, 16,
As shown in FIG. 2, the auxiliary pulley 18 having a narrow width is fixed, and the auxiliary belt 1 is attached to the front and rear auxiliary pulleys 18, 18.
9 is wound around and rotates integrally with the conveyor belt 17. A clamp 21 composed of a driving air cylinder and a pair of upper and lower jaws is fixed to the upper end of a column 20 standing on the swing frame 4, and the upper and lower jaws are closed by the operation of the air cylinder to close the auxiliary belt. The upper surface of 19 is sandwiched so that the horizontal movement of the transport portion of the transport belt 17 is stopped.

A first cutting table 22 and a crimping air cylinder 24 are fixed to the front portion of the slide frame 8 in the vicinity of the front pulley 16 of the conveying belt 17, and the crimping air cylinder 24 is fixed. The second cutting table 26 is fixed to the upward piston rod 25. At this time,
The height of the upper surfaces of the first cutting table 22 and the second cutting table 26 is
When the piston rod 25 is retracted, the piston rod 25 is made substantially equal to the conveyor belt 17, and a slight gap is formed between the two. The upper surfaces of the first cutting table 22 and the second cutting table 26 are formed as smooth surfaces, and the upper surfaces of the first cutting table 22 near the front edge and the upper surfaces of the second cutting table 26 near the rear edge are respectively formed. A large number of suction ports 23 and 27 are opened, and a negative pressure source is connected to the suction ports 23 and 27 via an electromagnetic opening / closing valve (not shown). The traveling cutter 31 is provided between the first cutting table 22 and the second cutting table 26, and the blade edge thereof projects upward from the gap between the two.

In the above structure, as shown in FIG.
When the piston rod 6 of the lifting air cylinder 5 is retracted to position the swing frame 4 downward and the slide frame 8 is in the retracted position away from the molding drum 1, as shown in FIG. 22 and the belt 17 for conveyance, the strip | belt-shaped member B, the front-end | tip has the 1st cutting stand 2
2 so as to match the front edge of the first cutting table 22 and apply suction to the suction port 23 opened on the upper surface of the first cutting table 22.
The tip of the band-shaped member B is fixed on the top of the two.

Next, the sliding motor 13 is driven to move the slide frame 8 forward (see FIG. 4), and the swing frame 4 is further swung upward to bring the tip of the belt-like member B into pressure contact with the lower end of the drum 1. Affix (see Fig. 5). Subsequently, instead of the transport surface of the transport belt 17, the upper portion of the auxiliary belt 19 is clamped by the clamp 21 to prohibit horizontal movement of the transport surface of the transport belt 17, and the suction port of the first cutting table 22 is also provided. The slide frame 8 is moved forward by a predetermined distance in a state where the suction action of 23 is stopped, so that the supporting pulley 16, the first cutting table 22, and the second cutting table 2 of the conveyor belt 17 are kept stationary.
6 is moved forward (see FIG. 6).

Next, the clamp 21 is opened to release the conveyor belt B, and then the tire forming drum 1 and the conveyor belt 17 are rotated at the same peripheral speed, so that the belt-shaped member on the conveyor belt 17 is rotated. B is wound around the tire-forming drum 1 without tension (see FIG. 7), and when the drum 1 is rotated about 3/4 by setting, the tip of the belt-shaped member B on the drum 1 is detected by the photoelectric element L, Based on this detection signal, the drum 1 and the conveyor belt 17 are stopped, and then the clamp 21 is closed again to convey the conveyor belt 1.
7 is fixed, and the slide frame 8 is retracted in this state, so that the belt 17, the first cutting table 22, and the second cutting table 26 with the belt-shaped member B kept stationary.
By a predetermined distance (see FIG. 9). At this time, the traveling cutter 3 between the first cutting table 22 and the second cutting table 26
1 to the winding start point at the lower end of the tire molding drum 1 is about 1/4 of the circumference of the tire, that is, the drum 1 described above.
Is equal to the distance from the lower end to the tip of the belt-shaped member B on the drum 1.

Next, suction is applied to the suction ports 23 and 27 opening on the upper surfaces of the first cutting table 22 and the second cutting table 26 to move the belt-shaped member B to the first cutting table 22 and the second cutting table 26.
The belt-shaped member B is cut by driving the traveling cutter 31. Then, while advancing the slide frame 8, the tire forming drum 1 is rotated at a speed equal to the advancing speed of the slide frame 8, whereby the remaining winding of the belt-shaped member B is performed without tension, and the air for pressure bonding is pressed. The piston rod 25 of the cylinder 24 is projected to press the winding end of the belt-shaped member B onto the drum 1 (see FIG. 10).

When the winding is completed in this way, the second
The suction of the cutting table 26 is stopped, and the rotation of the molding drum 1 and the forward movement of the slide frame 8 are stopped.
The cutting No. 26 is lowered, the swing frame 4 is further lowered, the slide frame 8 is retracted, and it is returned to the initial standby position. In addition, in this embodiment, the second cutting table 26 is moved up and down by the crimping air cylinder 24, so that the winding end of the belt-shaped member B can be automatically crimped to the drum 1.

[0019]

According to the present invention, the swing frame is provided on the lower front side of the tire forming drum, the slide frame is provided on the swing frame, and the belt for carrying the belt-shaped member, the first cutting table and the second frame are provided on the slide frame. A cutting table is arranged in order, and a traveling cutter for cutting the belt-shaped member is provided between the first cutting table and the second cutting table, and each of the first cutting table and the second cutting table is provided on the opposite side thereof. Since a suction port for fixing the belt-shaped member is opened on the upper surface, and a clamp for fixing the conveying surface of the conveying belt is provided,
By synchronously operating the drum and the conveyor belt in a state where the tip of the belt-shaped member placed on the first cutting table is pressed against the lower end of the drum, the belt-shaped member having a predetermined length less than one circumference is tension-free on the drum surface. The remaining band-shaped member can be wound without tension by cutting the band-shaped member and then rotating the slide frame and the drum synchronously. Since the belt-shaped member can be sucked and fixed to the first cutting table and the second cutting table by suction, the belt-shaped member is moved when the belt-shaped member is cut and together with the first cutting table and the second cutting table. In this case, the band-shaped member can be cut straight and the extension thereof can be prevented by performing the above-mentioned adsorption and fixation.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an embodiment of the present invention.

FIG. 2 is a plan view of the front portion of FIG.

FIG. 3 is a side view of a lower portion of the drum in a standby position.

FIG. 4 is a side view of the lower portion of the drum when the slide frame is advanced following FIG.

FIG. 5 is a side view of the lower portion of the drum when the swing frame is raised following FIG.

FIG. 6 is a side view of the lower portion of the drum at the start of winding the belt-shaped member, following FIG.

FIG. 7 is a side view of the drum lower portion after the start of winding the belt-shaped member, following FIG. 6;

FIG. 8 is a side view of a lower portion of the drum when most of the belt-shaped member is wound.

FIG. 9 is a side view of the lower portion of the drum at the time of cutting the strip-shaped member continued from FIG.

FIG. 10 is a side view of the lower portion of the drum at the end of winding, following FIG.

[Explanation of symbols]

B: Belt-shaped member, 1: Tire forming drum, 4: Swing frame, 5: Air cylinder for raising and lowering, 8: Slide frame, 17: Belt for conveying belt-shaped member, 20: Strut, 2
1: Clamp, 22: First cutting table, 23, 27: Suction port, 26: Second cutting table, 31: Traveling cutter.

Claims (1)

Claim: What is claimed is: 1. A swing frame long in the direction orthogonal to the drum is provided below the front side of the tire forming drum so as to be vertically swingable with the side far from the drum as a fulcrum. A slide frame that advances and retracts in the length direction is provided, and a conveyor belt for belt-shaped members, a first cutting table, and a second cutting table are sequentially arranged on the slide frame from the fulcrum side of the swing frame toward the drum side.
A traveling cutter for cutting the belt-shaped member is provided between the first cutting table and the second cutting table, and the belt-shaped member is fixed to each upper surface of the first cutting table and the second cutting table on the opposite side. Of the belt-shaped member sticking device for a tire forming machine, wherein a clamp for fixing the carrying surface of the carrying belt is provided on a pillar standing on the slide frame.