JP3399516B2 - Belt winding method and belt winding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire forming apparatus, and more particularly to a method and an apparatus for winding a belt, for example, a steel belt, which is wound around a belt drum for forming a tubular shape. .

[0002]

2. Description of the Related Art Generally, as disclosed in, for example, Japanese Patent Publication No. 5-1733, when molding a carcass cord (steel belt), first, a stock roll co-wound with a liner Separate and wind separately. Then, after pulling out only the carcass cord onto the belt conveyor, the carcass cord is cut into a predetermined length. Next, this is wound around a belt drum, and both ends thereof are adhered to form a tubular shape. The carcass cord before being cut in this manner is wound together with the liner only to prevent the carcass cords from adhering to each other. Therefore, the cost has been reduced by eliminating the need for this liner.

[0003]

However, as shown in FIG. 10, the carcass cord 5 mounted on the tray 52 is used.
In the vicinity of the winding start end portion 51a of No. 1, the belt drum 50 cannot be sufficiently adsorbed, and there is a possibility that the belt drum 50 may peel off from the peripheral surface of the belt drum 50 in the middle thereof. When the carcass cord 51 is peeled off from the belt drum 50 in this way, the supply to the next process is not successful and the production line must be temporarily stopped.

The present invention has been made by paying attention to the problems existing in the prior art. Therefore, the purpose is to completely prevent the belt from peeling off from the forming drum when the belt is supplied from the tray to the forming drum, and securely wind the belt around the forming drum. (EN) A belt winding method and a belt winding device that can be used.

[0005]

In order to achieve the above object, according to the invention described in claims 1 and 4, when the belt is transferred from the tray synchronized with the forming drum to the forming drum. , Through the holes provided in the tray, and pressing the belt from the outer side in the radial direction of the forming drum so as to follow the shape of the forming drum, and the belt is wound around the forming drum to form a tubular belt. It is designed to be molded.

Therefore, even when the belt is started to be wound around the molding drum, the belt can be reliably wound around the molding drum without peeling and dropping from the peripheral surface of the molding drum. Therefore, there is less risk that the belt manufacturing line will be stopped, and tire productivity can be improved.

[0007] In the present invention of claim 2 or claim 5, it
The method of winding the belt according to claim 1 or claim 4.
In the belt winding device according to the fourth aspect of the present invention , the pressing member rotates at the same speed as the hole of the tray, and the push-up height is changed according to the movement of the peripheral surface of the forming drum.

Therefore, the pressing member presses the belt, and the pressing member changes the push-up height in synchronism with the forming drum, so that the belt is wound between the forming drum and the forming drum. Does not cause any movement such as relative slip.
For this reason, it is possible to more reliably press the belt against the surface of the molding drum, and it is possible to more reliably prevent the belt of the molding drum from falling off.

[0009] In the present invention of claim 3 or claim 6, which
The belt winding method according to claim 2 and claim 5
In the belt winding device , the belt is pressed against the belt at a plurality of different positions in the circumferential direction and the width direction of the forming drum.

Therefore, since the belt is pressed at a plurality of positions, the belt can be pressed more reliably, the possibility of peeling and dropping can be reduced, and a local force is applied to the belt. Without, it can be pressed almost uniformly.

According to a seventh aspect of the invention, in the belt winding apparatus according to the sixth aspect , the pin is connected to a mechanism for moving the tray and rotates at the same speed as the hole of the tray.
, The infested from the holes by the action of cams, it is intended to press the belt when protruding from the hole.

Therefore, since the tray and the pin can be moved in the same direction and at the same speed by the mechanical mechanism, the belt can be pressed reliably. According to an eighth aspect of the invention, in the belt winding device according to the sixth or seventh aspect, the pin is biased in a direction projecting from the hole by the biasing means.

Therefore, even if the thrust height is not strictly set, the belt can be pressed along the shape of the forming drum by the urging means such as a spring or air, so that the belt can be wound around the forming drum. No large biased force is applied to the belt. Therefore, the belt can be made to conform to the shape of the forming drum.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention will be described below with reference to FIGS. 1 to 8. In the present embodiment, a case where a steel belt is wound as a belt will be described.

Belt winding device 2 in the present embodiment
As shown in FIGS. 1 and 2, 0 is disposed below the belt drum 11 which is a forming drum. Winding device 20
Is a feed mechanism 21 and a push-up mechanism 22 which is a pressing device.
And lifting and lowering cylinders 23 and 24 for moving the winding device 20 toward and away from the belt drum 11.

Below the mounting table 17 of the feeding mechanism 21, a rack chain 25 is provided as shown in FIG.
The belt tray 12 is fixed to the mounting table 17 by a known structure (not shown), such as a clamp mechanism. The feeding mechanism 21 is a motor 26 shown in FIG.
With the rotation of the rail 27 as a guide, the belt tray 12 is moved in the horizontal direction orthogonal to the axial direction of the belt drum 11. The belt tray 12 is provided with a plurality of holes 13 as shown in FIGS. 7 and 8. The holes 13 are provided in a number corresponding to the type of the steel belt 15, and in the present embodiment, they are provided in 6 rows. The steel belt 15 is
As shown in FIGS. 7 and 8, it has a parallelogram shape.

As shown in FIG. 2, the elevating cylinders 23 are arranged on both sides of the winding device 20 in the axial direction, and the mounting tables 17 on which the belt tray 12 is mounted are brought closer to the belt drum 11. It is for separating. On the other hand, as shown in FIG. 1, the lifting cylinders 24 are arranged on both sides of the push-up mechanism 22 in the moving direction of the belt tray 12, and the push-up mechanism 22 is entirely moved to the belt drum 11.
It is for approaching and separating from.

As shown in FIG. 2, the push-up mechanism 22 has a pair of drive shafts 33 each having a sprocket 32 at one end thereof, which are mounted on a pair of opposed cam plates 34 at a distance from each other. A connecting member 35 having a sprocket 35a is externally fitted to these drive shafts 33. As shown in FIG. 1, the sprocket 35a is engaged with a chain 36 that is wound between the drive shafts 33.

A plurality of first plate members 41 are engaged with the chain 36 at equal intervals. The first plate member 41 has holes 1 so as to be aligned with the holes 13 of the belt tray 12.
Six through-holes 41a aligned in the longitudinal direction are formed at the same number and the same pitch as 3. Further, as shown in FIGS. 5 and 6, two rollers 43 that slide in the inner cam groove 30 of the cam plate 34 are provided on both sides of the first plate member 41. A protrusion 41b extending upward is formed between the roller 43 and the hole 13.

Cam plate 3 supporting the drive shaft 33
The inner cam groove 30 and the outer cam groove 31 provided on the outer periphery of the inner cam groove 30 are formed on the outer surface 4. The outer cam groove 31 is formed so as to substantially surround the outer circumference of the inner cam groove 30, but the maximum proximity position P to the belt drum 11 is set.
Is formed so as to project toward the belt drum 11 side between a predetermined position Q and the predetermined position Q. The outer cam groove 31 has a first
Rollers 44 provided at both ends of the second plate member 42 superposed with the plate member 41 at a distance are slidably arranged. Similar to the first plate member 41, the second plate member 42 also has six through holes 42a that are aligned with the holes 13 of the belt tray 12 and are aligned in the center in the longitudinal direction by six. Projections having holes 42b are formed on both sides of the through hole 42a, and the projections 4 of the first plate member 41 are formed in the holes 42b.
1b is fitted inside so that it can slide up and down.

The movable member 45 is fixed to the through hole 42a of the second plate member 42, and the through hole 41a of the first plate member 41.
It is inserted so that it can move up and down. As shown in FIG. 3, the movable member 45 includes a spring 46, a tubular member 47 in which the spring 46 is provided, and a pin 48 which is a pressing member biased by the spring 46 in the protruding direction. Further, as shown in FIG. 4, a needle-shaped protrusion 48a is provided at the tip of the pin 48. The protrusions 48 a have a role of preventing the steel belt 15 from slipping when the steel belt 15 is pushed up.

The belt winding device according to the present embodiment is constructed as described above, and its operation will be described below. Belt tray 1 using a conveyor device (not shown)
When the steel belt 15 cut into a predetermined length is placed on the upper surface 2, the elevating cylinder 23 is first operated.
Then, the feeding mechanism 21 is raised, and the tip of the steel belt 15 is brought into close contact with the lower surface of the belt drum 11.
Next, the lifting cylinder 24 is raised to raise the push-up mechanism 22, and the sprocket 32 of the drive shaft 33 is engaged with the rack chain 25 of the feed mechanism 21.

In this state, the belt drum 11 is rotated. Then, the motor 26 is rotated so as to be synchronized with this, the feed mechanism 21 is operated, and the belt tray 12 is moved to the left in FIG. Then, the rack chain 25 of the mounting table 17 of the feeding mechanism 21 also moves in the same direction and at the same speed as the belt tray 12. Therefore, the drive shaft 33 is rotated via the sprocket 32 that is engaged with the rack chain 25. When the drive shaft 33 rotates, the connecting member 35 also rotates, and the chain 36 rotates via the sprocket 35a of the connecting member 35. Since the chain 36 is engaged with the first plate member 41, the first plate member 41 moves along the inner cam groove 30. At this time, since the movable member 45 is inserted into the first plate member 41, the movable member 45 is moved. Furthermore, since the movable member 45 is fixed to the second plate member 42, the second plate member 42 slides along the outer cam groove 31 along with the movable member 45.

When the movable member 45 reaches the maximum proximity position P, the movable member 45 is fixed to the second plate member 42 which moves along the shape of the outer cam groove 31, so that the first and second plates are moved. The movable members 45 aligned in the width direction of the members 41 and 42 are simultaneously lifted. Then, by the action of the spring 46, the pin 48 of the movable member 45 projects upward and presses the steel belt 15 against the belt drum 11. In this case, since the protrusion 41b of the first plate member 41 slides in the hole 42b of the second plate member 42, the movable member 45 is guided in the vertical direction.

After that, the belt drum 11 continues to rotate,
And when the drive of the motor 26 is continued in synchronization with this,
With the movable member 45 protruding from the belt tray 12,
The belt tray 12 moves to the left. At this time, since the pin 48 of the movable member 45 is biased by the spring 46,
The pin 48 projects so as to fill the vertical distance between the belt drum 11 and the belt tray 12, and keeps pressing the steel belt 15 against the belt drum 11. Therefore, the pin 48
As shown in FIG. 9, the steel belt 15 is sequentially pressed along the circumferential shape of the belt drum 11.

Then, the second plate member 42 is moved to the maximum proximity position P.
When the movable member 45 is fixed to the second plate member 42 that slides in the outer cam groove 31, the movable member 45 is pushed downward again and moves to the outer cam groove 31 in that state. Orbit along. After that, the movable member 4
5 is a first plate member 41 that orbits along the inner cam groove 30.
The movement along the outer cam groove 31 and the pressing of the belt drum 11 again are repeated as described above.

Next, the effects expected from the above-mentioned embodiment will be described below. The belt winding device 20 of the present embodiment includes the movable member 45 that presses the steel belt 15 against the belt drum 11 so as to follow the shape of the belt drum 11 from the maximum proximity position P to the predetermined position Q. There is. Therefore, at the start of winding the steel belt 15 around the belt drum 11, the steel belt 15 does not peel off from the peripheral surface of the belt drum 11. Therefore, the steel belt 15 can be reliably wound around the belt drum 11.

The belt winding device 20 of the present embodiment
Rotates the pin 48 at the same speed as the hole 13 of the belt tray 12 and changes the height of the push-up of the pin 48 according to the movement of the peripheral surface of the forming drum. Therefore, the belt pressed by the pin 48 and the belt drum 1
1 does not move relative to the point of contact. Therefore, the peeling of the steel belt 15 can be prevented more reliably.

The belt winding device 20 of the present embodiment
Since the six movable members 45 arranged in the width direction of the first and second plate members 41, 42 press the steel belt 15 against the belt drum 11 over a wide range, the peeling and dropping from the belt drum 11 can be performed more reliably. Can be prevented.

According to the belt winding device 20 of the present embodiment, when the pin 48, which is the pressing member, is rotated together with the hole 13 of the belt tray 12, the pin 48 is projected and retracted from the hole 13 by the action of the cam. The steel belt 15 was pressed against the above. Therefore, the belt drum 11, the belt tray 12, and the pin 48 are mechanically synchronized, so that they can be reliably synchronized at a predetermined timing.

According to the belt winding device 20 of the present embodiment, the spring 4 for adjusting the vertical position of the pin is provided on the pin 48.
6 is provided. Therefore, the steel belt 15 can be pressed so that the spring 46 follows the shape of the belt drum 11 without strict setting of the push-up height of the outer cam groove 31. (Modification) It should be noted that this embodiment can be modified and embodied as follows.

In the above embodiment, the belt tray 12
The steel belt 15 is pressed by the pin 48 moving in the same direction and at the same speed. However, in order to simplify the structure, a plurality of pressing members that perform only vertical movement may be provided to press the belt along the shape of the forming drum. In this case, the pressing member is provided with a roller, and the roller is configured to press the belt. Therefore, the roller rotates as the belt moves.

In the above embodiment, the plurality of pins 48 arranged in the width direction are used as the pressing member, but it goes without saying that the pressing member is not limited to this and may be a block-shaped member.

In the above-described embodiment, the first plate member 41 slidably fitted to the movable member 45 slides as a structure for moving the movable member 45 in the same direction and at the same speed as the belt tray 12. The groove was used as the inner cam groove 30. In addition, as a mechanism for changing the vertical movement of the movable member 45, that is, the thrust height, the groove in which the second plate member 42, to which the movable member 45 is fixed, slides is the outer cam groove 31. However, a structure for moving the movable member 45 in the same direction and at the same speed as the belt tray 12 may be arranged on the outer side, and a mechanism for changing the vertical movement of the movable member 45, and thus the thrust height, may be arranged on the inner side. That is, the movable member 45
The groove on which the second plate member 42 that is fixed is slid is provided on the inside, and the groove on which the first plate member 41 that slidably fits the movable member 45 is slid is provided on the outside. Hole 13
The function of a cam for retracting the pin 48 can be configured.

In the above embodiment, the spring 46 is provided to urge the pin 48 in the protruding direction, but an air cylinder may be provided instead of the spring 46. Of course, the spring 46 may not be provided. However, in this case, the outer cam groove 31 is formed in a shape that follows the shape of the belt drum 11.

In the above embodiment, the steel belt 15 is described as an example of the belt, but it goes without saying that the belt can be applied to other belts as long as the belt is wound around the forming drum.

[0037]

As described in detail above, according to the present invention,
It has the following excellent effects.

According to the inventions of claims 1 and 4, when the belt moves from the tray to the forming drum, the belt is pressed so as to follow the shape of the forming drum. Therefore, the belt can be wound around the forming drum almost 100% without peeling and dropping from the peripheral surface of the forming drum. Therefore, there is less risk that the belt manufacturing line will be stopped, and tire productivity can be improved.

According to the second and fifth aspects of the present invention, the pressing member that rotates at the same speed as the hole of the tray changes the height of the pressing member as the peripheral surface of the forming drum moves. Therefore, since a relative sliding motion does not occur between the belt wound around the forming drum and the forming drum, it is possible to more reliably press the belt against the surface of the forming drum, The belt can be peeled and dropped more reliably.

According to the third and sixth aspects of the invention, since the pressing is performed at different positions in the circumferential direction and the width direction of the forming drum, the belt can be pressed more reliably and the peeling can be performed. The possibility of falling can be reduced.

According to the seventh aspect of the invention, the pin moves with the tray and is retracted and retracted from the hole by the action of the cam to press the belt when protruding.
Therefore, since the tray and the pin can be moved in the same direction and at the same speed by the mechanical mechanism, the belt can be reliably pressed.

According to the invention of claim 8, a spring for adjusting the vertical position of the pin is urged. Therefore, even if the push-up height for urging the pin to the forming drum is not strictly set, the spring can press the belt so as to follow the shape of the forming drum, and the belt when wound around the forming drum A large force biased to is not applied. Therefore, the belt can be made to conform to the shape of the forming drum.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a belt winding device.

FIG. 2 is a sectional side view showing an embodiment of a belt winding device.

FIG. 3 is an enlarged cross-sectional view of a main part showing an embodiment of a belt winding device.

FIG. 4 is an enlarged cross-sectional view of a main part showing a pin that is a pressing member.

FIG. 5 is a first perspective view showing the operation of the push-up mechanism of the belt winding device.

FIG. 6 is a second perspective view showing the operation of the push-up mechanism of the belt winding device.

FIG. 7 is a first plan view showing the shapes of the belt tray and the steel belt.

FIG. 8 is a second plan view showing the shapes of the belt tray and the steel belt.

FIG. 9 is a front view of the main part showing the operation of the belt winding device.

FIG. 10 is a cross-sectional view of essential parts showing a belt winding device in a conventional example.

[Explanation of symbols]

11 ... Belt drum, 12 ... Belt tray, 13 ... Hole,
15 ... Steel belt, 21 ... Feed mechanism, 22 ... Push-up mechanism, 46 ... Spring, 48 ... Pin.

Claims (8)

(57) [Claims] 1. The movement of a tray on which a belt is placed and the rotation of a forming drum are synchronized, the belt is supplied from the tray to the forming drum, and the belt is wound around the forming drum to form a tubular shape. In the belt winding method according to claim 1, when the belt is transferred from the tray to the forming drum, the pressing member presses the belt from the outer side in the radial direction of the forming drum, passing through a hole provided in the tray. Accordingly, the belt winding method is characterized in that the belt is wound around the drum so as to follow the shape of the forming drum. 2. The pressing member is rotated at the same speed as the hole of the tray, and the pressing member changes its pushing-up height according to the movement of the peripheral surface of the rotating molding drum. How to wrap the belt. 3. The belt winding method according to claim 1, wherein the pressing of the belt is performed at a plurality of positions in the circumferential direction and the width direction of the forming drum which are different from each other. 4. A belt winding device having a forming drum for winding a belt to form a tubular shape, and a tray which is moved in synchronism with rotation of the forming drum and supplies the belt to the forming drum. In the pressing device, when the belt is supplied from the tray to the forming drum, the belt penetrates the hole of the tray from the outside in the radial direction of the forming drum and presses the belt so that the belt follows the shape of the drum. A winding device characterized by being provided with. 5. The pushing device pushes up a belt.
5. The belt winding device according to claim 4 , further comprising a pressure member, the pressure member rotating at the same speed as the hole of the tray and changing the push-up height according to the movement of the peripheral surface of the rotating molding drum. 6. The belt winding device according to claim 5 , wherein the pressing member is a pin that presses the belt at a plurality of positions in the circumferential direction and the width direction of the forming drum that are different from each other. 7. The pin is connected to a mechanism for moving the tray to rotate at the same speed as the hole of the tray, and when the pin protrudes and retracts from the hole by the action of a cam and protrudes from the hole, The belt winding device according to claim 6 , which presses the belt. 8. The belt winding device according to claim 6 , wherein the pin is biased by a biasing means in a direction projecting from the hole.