JP5306782B2 - Automatic material delivery system for tires - Google Patents

Description

  The present invention relates to a tire material automatic feeding device installed in a tire molding machine used in a tire manufacturing process.

  In the tire manufacturing process, a long tire molding belt-shaped material (for example, cord ply) wound up in a roll shape is fed onto a conveyor of a tire material feeding device (servicer) and fixed to a predetermined length. After cutting, this fixed-size material is supplied to a tire molding drum (band drum) installed in the vicinity, and pasted from a direction perpendicular to the axis of the molding drum to form a tire.

  The tire-forming belt-like material, for example, a cord ply, is manufactured and supplied by the following method. That is, the ends of the plies obtained by cutting a wide original sheet into a predetermined width and angle are overlapped and joined together, and after checking the condition of the seam (bias joint), this is wound into a roll and stocked. It is considered as a roll (for example, Patent Documents 1 to 3).

  Accordingly, when the tire molding belt-shaped material thus produced is fed onto a conveyor and cut to a predetermined length, this fixed material may include a bias joint. When a sizing material containing this bias joint is applied to a tire molding drum, the thickness of the bias joint and other parts will be different, so the product tire will be unevenly deformed and the uniformity will deteriorate. .

For this reason, when cutting the tire molding strip material to a certain size, it is necessary to cut the bias joint part from the fed tire molding strip material and remove it from the conveyor. It has been proposed to suck up with a vacuum pad and drop it out of the tire molding machine.
Japanese Patent Laid-Open No. 11-138657 JP 2001-232694 A Japanese Patent Laid-Open No. 7-232382

  However, because materials are placed around the tire molding machine, there is no space for storing the sucked-up bias joint in the vicinity of the tire molding machine, which is far away from the tire molding machine. It was necessary to move to a location (for example, about 2 m) and drop it. As a result, along with the installation of the vacuum pad, it is inevitable that the entire apparatus becomes large, the cost increases, and workability and safety may be impaired.

  In addition, if a part of the bias joint remains on the vacuum pad, there is a possibility that a suction failure occurs at the time of sucking up, and the operation is stopped for a short time, resulting in a decrease in productivity.

  In view of the above-mentioned problems, the present invention does not increase the size of the apparatus, does not increase the cost, does not impair workability and safety, and causes a decrease in productivity in the tire manufacturing process. It is another object of the present invention to provide a tire material automatic feeding device that can reliably remove a cut bias joint.

In order to solve the above-described problems, a tire material automatic feeding device according to the present invention is:
A transfer conveyor, a cutting means, and a supply conveyor are provided, and a belt-shaped material for forming a tire is fed onto the transfer conveyor and cut into a predetermined length by the cutting means to form a sizing material, and the sizing material is supplied. A tire material automatic feeding device installed in a tire molding machine that supplies a tire molding drum by a conveyor,
A joint detecting means for detecting a bias joint of the belt-shaped material for tire molding;
A cutting width indexing means for determining a cutting width at the front and rear portions of the bias joint;
Cut end mixing prevention means for preventing a cut end including the bias joint generated by cutting the tire molding strip material with the cutting width by the cutting means from remaining on the supply conveyor and mixing into a tire molded product,
Control means for controlling the cutting means, the joint detection means, the cutting width indexing means and the cut edge mixing prevention means,
In the piece mix prevention means,
A piece unloading means for unloading the piece by the transfer conveyor and the supply conveyor;
A drop port for dropping the cut end conveyed from the transfer conveyor to the supply conveyor from the supply conveyor ;
Furthermore, a first sensor that detects the piece that passes through the transfer conveyor,
A second sensor for detecting the piece passing through the supply conveyor;
A third sensor for detecting a piece falling from the drop opening,
When all the first to third sensors detect the cut ends, a tire molding restart signal is sent to the tire molding machine .

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  According to the present invention, in the tire manufacturing process, the bias is cut without increasing the size of the device, without increasing the cost, without impairing workability and safety, and without causing a decrease in productivity. It is possible to provide an automatic material delivery device for a tire that can reliably remove a joint.

  Hereinafter, the present invention will be described based on the best mode. Note that the present invention is not limited to the following embodiments. Various modifications can be made to the following embodiments within the same and equivalent scope as the present invention.

1. Tire Material Automatic Feeding Device (1) Outline of Tire Material Automatic Feeding Device First, an outline of a tire material automatic feeding device according to the present invention will be described with reference to FIGS. FIG. 1 is a front view showing an outline of a tire material automatic feeding apparatus according to the present invention, and a perspective view is shown in FIG. In FIG. 1 and FIG. 2, only relevant main parts are shown and the dimensions are also changed as appropriate for easy understanding of the present invention. 1 and 2 show a tire forming drum (band drum) B to which a tire material cut to a predetermined size is attached together with a tire material automatic feeding device 1.

  As shown in FIGS. 1 and 2, a tire material automatic feeding apparatus 1 according to the present invention is arranged at a lower portion, and a roll-shaped tire forming belt material A is transferred by a feeding portion 2 (in the figure, a first conveyor). The feeding means for feeding to the transfer conveyor 11 for 1 ply (1P) and the transfer conveyor 12 for the second ply (2P) are illustrated, and the fed strip A for tire molding is transferred by the transfer conveyors 11 and 12. The transfer means, the cutting means for cutting the transferred belt-shaped material A for tire molding into a fixed size by a cutting portion constituted by the cutter 31 and the cutter base 32, and the tire-forming belt-shaped material A cut into a fixed size for a tire Supply means for supplying the molding drum B to the tire molding drum B by the supply conveyor 14 is provided. In addition, the transfer conveyors 11 and 12 are isolate | separated into the 1st conveyor a and the 2nd conveyor b, respectively, on both sides of a cutting part.

  Further, the tire material automatic feeding device 1 is provided with an inner liner conveyor 13 for transferring the roll-shaped inner liner material A ′ fed out by the feeding section 2, and the inner liner material A ′ is supplied by the supply conveyor. 14 is configured to be supplied to the tire forming drum B via the reference numeral 14.

  In addition, each operation | movement of said each member and each operation | movement for the bias joint removal mentioned later are controlled by the control means which is not shown in figure, and each of the conveyors 11, 12, 13, and 14 is forward rotation, reverse rotation freely. Is possible.

(2) Bias Joint Removing Unit in Tire Material Automatic Feeding Device Next, the bias joint removing unit in the tire material automatic feeding device will be described below.

(A) Bias joint detecting means In order to remove the bias joint of the tire molding strip material A, it is necessary to detect the bias joint, and the tire molding strip material A is fed out in the tire material automatic feeding device 1. A bias joint detector 4 is provided on the transfer conveyor. In addition, in the following description, it demonstrates using the bias joint detection part 4 provided on the transfer conveyor 11 for 1P.

  A specific bias joint detection means will be described with reference to FIG. FIGS. 3A and 3B are diagrams for explaining the bias joint detection unit 4. FIG. 3A is a plan view and FIG. 3B is a front view.

  The bias joint detection unit 4 includes a contact-type measuring roller 4c that is urged toward the belt of the first conveyor 11a by an air cylinder 4d that holds the arm 4b, and the measuring roller 4c is the first conveyor 11a. When the vehicle rides on the bias joint of the tire forming belt-like material A conveyed by the above, the proximity switch 4e is turned on, and the bias joint is detected.

(B) Cutting width indexing means The proximity switch 4e remains on while the measuring roller 4c rides on the bias joint, and switches off when the measuring roller 4c comes off the bias joint. Is set.

  Then, the width of the bias joint is measured based on the angle or number of rotations of the measuring roller 4c while the proximity switch 4e is on, and the measured width of the bias joint has a slight margin (for example, about 20 mm). The cutting width Y ′ is determined by adding the cutting allowance).

  Based on the cutting width Y ′ thus determined, a portion including the bias joint is cut by the cutting portion to obtain a cut end including the bias joint.

(Iii) Means for preventing broken pieces from mixing If the obtained broken pieces remain on the conveyor and get mixed into the tire molded product, the product tire becomes defective. Therefore, it is necessary to remove the broken ends from the conveyor and prevent them from being mixed into the tire molded product. is there.

  The cut end mixing preventing means is constituted by the transfer conveyor 11, the supply conveyor 14 and the drop port 52 shown in FIG. 1, and by dropping the cut end conveyed via the transfer conveyor 11 and the supply conveyor 14 from the drop port 52. The scrap is removed from the conveyor. Note that a receiving tray 54 that receives the dropped piece and a guide plate 53 to the receiving tray 54 are provided below the dropping port 52.

  In FIG. 1, the mixing prevention means further includes a first sensor S1 that detects a cut end J1 that passes through the transfer conveyor 11, a second sensor S2 that detects a cut end J1 that passes through the supply conveyor 14, and a drop port 52. And a third sensor S3 for detecting the falling piece J1.

2. Description of Bias Joint Removal Process Using Tire Material Automatic Feeding Device Next, a bias joint removal process using the tire material automatic feeding device according to the present embodiment will be described. 4 (a), 4 (b), and 4 (c) are front views showing a cutting method by the cutting means of the tire material automatic feeding device of the present invention, and FIGS. It is a front view which shows a method.

(1) Bias Joint Detection Step In the tire molding step by the tire molding machine, the bias joint of the tire molding strip material A fed from the feeding portion 2 of the tire molding strip material A onto the first conveyor 11a of the transfer conveyor 11 is provided. When passing through the bias joint detection unit 4, the contact-type measuring roller 4c rides on the bias joint J, detects the bias joint J, and outputs a detection signal to the control unit. A command signal is output to the cutting width index part 4 ′ (see FIG. 4A).

(2) Cutting Width Indexing Step The cutting width indexing part 4 ′ measures the width of the bias joint J by the measuring roller 4c, and adds the cutting margin to the measured width Y ′ mm of the bias joint J to obtain the bias joint J Is calculated as Ymm (see FIG. 4A).

(3) Conveyance of belt-shaped material A for tire molding After cutting the preceding bias joint, the belt-shaped material A for tire molding is conveyed, and the conveyance is stopped when the next bias joint moves to the cutting position. The transport distance Xmm (the distance from the detection position (W) to the center of the bias joint in the longitudinal direction of the tire molding strip material A) of the tire molding strip A in this transport is from the detection position (W) of the bias joint J. When the distance from the cutting means 3 to the cutting position by the cutter 31 is Lmm, X = L−Y ′ + cutting margin (20 mm) is set (see FIG. 4B). During transport, the transport distance (X) is measured by an encoder, and the transport is stopped when the transport distance X reaches the value set above.

(4) Bias joint cutting step Next, the tire forming strip C is stopped, the front side of the bias joint J is cut, and the preceding tire forming material C cut to a predetermined length is conveyed. (See FIG. 4 (b)). After cutting the front side, the belt-shaped material A for forming a tire is conveyed and stopped by the above-described cutting width Y (= L−X + 20) mm, and the rear side of the bias joint J is cut (see FIG. 4C).

(5) Unloading step of the cut end Next, after the belt-shaped material A for forming the tire is slightly fed out (see FIG. 4D), the second end of the cut end J1 is moved by the press roller 51 while the second conveyor 11b is driven. By pressing against the pulley 110b of 11b, the cut piece J1 is cut off from the strip material A for forming the tire (see FIG. 4, (e)) and carried out from the cutter table 32 (see FIG. 4 (f)).

  Next, the piece J1 generated on the 1P transfer conveyor 11 is conveyed to the supply conveyor 14 illustrated in FIGS. 1 and 2 by the second conveyor 11b that rotates forward. As shown in FIGS. 1 and 2, the second conveyor 11 b is provided with a first sensor S <b> 1, and a piece J <b> 1 to be conveyed is detected. When the cut end J1 is detected by the first sensor S1, the supply conveyor 14 is reversed and the cut end J1 is conveyed toward the drop port 52. When the second sensor S <b> 2 provided on the supply conveyor 14 detects the cut end J <b> 1, the inner anvil 55 rises to open the drop port 52, and the cut end J <b> 1 drops along the guide plate 53 and is stored in the tray 54. A third sensor S3 is provided opposite to the guide plate 53, and it is confirmed that the cut end J1 has dropped through the drop port 52.

  During the cutting of the bias joint and the conveyance of the cut end J1, the first conveyor 11a and the inner liner conveyor 13 of the transfer conveyor 11 are stopped, and the conveyance of the tire forming strip material A and the inner liner material A 'is stopped. After the third sensor S3 confirms that all the cut pieces J1 have been discharged from the conveyor through the drop port 52, the feeding of the tire forming strip A is resumed, and the supply conveyor 14 is rotated forward. , The inner anvil is lowered and the drop port 52 is closed, and the feeding of the inner liner material A ′ by the inner liner conveyor 13 and the supply conveyor 14 is also resumed.

  As described above, in the tire material automatic delivery device according to the present embodiment, the bias joint is detected in the tire manufacturing process to surely cut all the bias joints, and the cut pieces are mixed with pieces. Since it conveys by the transfer conveyor and supply conveyor which comprise a prevention means, and it discharges | emits from a dropping port, it can prevent reliably that a bias joint mixes.

  In addition, the sensors S1, S2, and S3 for detecting the passage of the cut ends are provided in the cut end mixture preventing means, and using these sensors, it is confirmed that the cut end J1 is surely conveyed to the drop opening and discharged from the drop opening. Then, by restarting the delivery of the material, it is possible to more reliably prevent the bias joint from being mixed into the tire molded product. In addition, the entire process can be automated.

  In addition, since a bias joint detection unit and a cutting dimension indexing unit are provided, and a conventional transfer conveyor and supply conveyor are used to remove the cut end from the conveyor, an existing tire material automatic feeding device is provided. In addition, it is only necessary to make a slight improvement, and it is possible to prevent an increase in the size of the apparatus and to secure a sufficient work space to improve safety.

  Further, in the case of a conventional tire material automatic feeding device that sucks and removes a piece with a vacuum pad, there is a possibility that work may be delayed due to poor suction, but the tire material automatic feeding device according to the present embodiment Then, since it can be reliably discharged by a simple mechanism in which the cut end J1 reaches the drop opening 52 and falls, there is no possibility that the work will be delayed.

1 is a front view showing an outline of a tire material automatic feed device according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an outline of a tire material automatic feed device according to an embodiment of the present invention. It is the (a) front view and the (b) top view of the bias joint detection means and cutting width indexing means of the tire material automatic delivery device concerning one embodiment of the present invention. (A) (b) (c) is a front view which shows the cutting method by the cutting means of the tire material automatic delivery apparatus which concerns on one embodiment of this invention, (d) (e) (f) is carrying out It is a front view which shows a method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tire material automatic delivery apparatus 2 Feeding part 3 Cutting means 4 Bias joint detection part 4 'Cutting width index part 4a Horizontal axis 4b Arm 4c Measuring ring 4d Air cylinder 4e Proximity switch 11 1P transfer conveyor 11a First conveyor 11b 2nd conveyor 12 2P transfer conveyor 12a 1st conveyor 12b 2nd conveyor 110b, 120b Pulley 13 Inner liner conveyor 14 Supply conveyor 31 Cutter 32 Cutter base 51 Pressing roller 52 Drop port 53 Guide plate 54 Receptacle A Belt-shaped material for tire molding A 'Inner liner material B Tire molding drum C Tire molding material J Bias joint J1 Cut edge L Distance from W to cutting position S1, S1' First sensor S2 Second sensor S3 Third sensor W of bias joint Out of position

Claims (1)

A transfer conveyor, a cutting means, and a supply conveyor are provided, and a belt-shaped material for forming a tire is fed onto the transfer conveyor and cut into a predetermined length by the cutting means to form a sizing material, and the sizing material is supplied. A tire material automatic feeding device installed in a tire molding machine that supplies a tire molding drum by a conveyor,
A joint detecting means for detecting a bias joint of the belt-shaped material for tire molding;
A cutting width indexing means for determining a cutting width at the front and rear portions of the bias joint;
Cut end mixing prevention means for preventing a cut end including the bias joint generated by cutting the tire molding strip material with the cutting width by the cutting means from remaining on the supply conveyor and mixing into a tire molded product,
Control means for controlling the cutting means, the joint detection means, the cutting width indexing means and the cut edge mixing prevention means,
In the piece mix prevention means,
A piece unloading means for unloading the piece by the transfer conveyor and the supply conveyor;
A drop port for dropping the cut end conveyed from the transfer conveyor to the supply conveyor from the supply conveyor;
Furthermore, a first sensor that detects the piece that passes through the transfer conveyor,
A second sensor for detecting the piece passing through the supply conveyor;
A third sensor for detecting a piece falling from the drop opening,
A tire material automatic feeding device characterized in that a tire molding restart signal is sent to a tire molding machine when all of the first to third sensors detect the cut ends. .

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