TW579327B - PU-filled tire, method for forming PU tire - Google Patents

Abstract

The present invention relates to a PU-filled tire, and a method for forming a PU tire, particularly a method for forming a PU tire with uniform rigidity on the body. The method mainly comprises: filling material into a mold; centrifugally rotating the mold; heating the mold enabling foaming of the material in the mold; removing the foamed material from the mold; and trimming the foamed material, thereby obtaining a PU-filled tire or PU tire with a uniform density by rapid formation.

Description

579327

The present invention relates to a method for forming a pU-filled tire and a pu wheel, and more particularly to a rapid forming method capable of making a PU-filled tire and a tire body of the PU wheel having uniform soft hardness. According to the general PU filled tire or pu wheel, the molding method is roughly the same. The difference is that the PY filled tire 1 series has an outer tire 11 (as shown in the first figure). Before molding, the outer tire ii must be After punching the exhaust hole 1 1 1 on one side 1 1 0, the outer tire ii is put into the mold, and one of the exhaust holes 1 1 1 on the outer tire 1 1 faces up to facilitate When filling the PU material, the residual air in the outer tire ii can be completely exhausted, and after heating and foaming, the burr is repaired, which is two.

The finished product, and the PU wheel 2 (as shown in the second picture), is directly filled with Pu material in the mold, and then heated to form, after trimming the burr, it is a finished wheel body. The above-mentioned PU filled tire or PU wheel The molding method is exactly the same (as shown in the third figure), mainly including the processes of filling the mold, heating and foaming, molding and demoulding, and trimming operations. However, this molding method has some defects: [· Because the PU material is injected into the mold, the density will be uneven due to the problem of exhaust, which will cause the wheel body to soften and harden after foaming. As a result, when Pu filled tires or PU wheels are in use, the soft hardness (density) will be different. Uniformity causes tilting and deflection when the wheel body moves. -· For Pu-filled tires, the outer tires must be die-cut before venting, which not only consumes man-hour costs, but also damages the tire life. In view of the lack of the conventional PU-filled tires and PU wheels, the inventor of this case has decades of experience in processing the PU industry.

579327 V. Description of the invention (2) As soon as the problem of uneven soft hardness (density) arises, so after continuous testing, the second part of the present invention is finally completed. The bottle material is put into the mold, centrifuged and heated and foamed, Molding and unloading HPP to fill the process, and can obtain a uniform density, fast square, ^ 3 operations and other traditional process missing. Chengshi method ’effective solution

The purpose of the present invention is to provide a method for forming a tire and a PU wheel, which can be filled with PU and heated by foaming, heating and foaming, die-cutting, trimming, etc .: . In order to effectively solve the problem, the following items are provided in conjunction with the illustrations and numbers. Field implementation examples are as follows: # 、、、 田 " π The present invention is shown in Figures 4 to 6. (The outside of the dotted line a is the position where the outer tire is placed when i is the elder brother). χ 2. Running and heating foaming: at the same time when the filler is in the mold, ± 2 synchronously drives the mold 4 to rotate at high speed so that; = is distributed more evenly by the centrifugation in the molding filler area 4 3 枓 I borrow = heating tube inside 4 2 i heating with the same = foam molding. ′ J-step heating 3 4 · Mold release: After the foam molding, the brake stops at high speed, and the mold 4 is opened to take out the molded product. Axis 5 2 spin mouth! Five to = after the excess material and burrs of the product are-finished products. As shown in Figures 5 and 8, the molding machine 5 of the present invention is mainly

579327 V. Description of the invention (3) A base 5 1 2 and the top connected car 5 4 of the moving 5 2, the upper plate 1 and the lower mold 4 2 clamp 4 5 on the turntable 5 3 control; 6 'is for PU filling 4 3 port, the heat source of soaking. When the PU material is filled with the high-speed rotating shaft 5, the filling is densely and evenly filled at this time. The clearance car device 5 4 to 4 5 opens the upper mold residue, and a guard is installed on the back of the burr to ensure that the operator can make a comprehensive statement. Missing Rapid Prototyping PU. In the center, there is a "connecting force device M drive for high-speed rotation with the power unit", the high-speed rotating shaft 5 knots a turntable 5 3, and the turntable 5 is on the high-speed rotating shaft:!:; Rotation: ... rotating shaft "to strip: = 装A molding mold 4 is provided, and the Μ 目 υτ 彳 is moved at first, and its-side is-the drag shaft 4 4 pivot side: the upper and lower molds 4 1 and 4 2 are used to close the mold:;: fast: reject the mold 4 Above the central part, there is a loose filling machine 3, and its discharge pipe 3 1 p is inclined, 4, and the mold 4 is provided with a heating pipe 2 ': $: stuffing area 4 ζ 丄 is for PU material heating Material port 4 6 of π Ri ^ 2 rotates, · PU material of M drive driven by the rotary table dagger power unit will be centrifuged due to: with 4 as the rotation operation, the material filling area 43 of the shaped packing area is discharged more tightly and smoothly; when adding: Fluoride also feeds through the high-speed rotating shaft 5 2 Brake = After the foam type, 'use the brake Λ Ί% mountain Ί, ^ V action' and release the quick-release clamp ^ out of the molded product and then trimming operation to remove the excess two Two finished products; the forming machine plate 5 5 on the outside of the forming mold 4 is used to prevent accidental release of the mold 4 and is safe. ^ The molding method of the present invention can obtain a uniform density, support, tire filling, and PU wheels.

579327 Brief description of the diagram The first picture is a cross-sectional schematic diagram of a conventional PU filled tire. The second picture is a cross-sectional schematic diagram of a conventional PU filled tire. The second diagram is a manufacturing process chart of a conventional PU filled tire PU wheel. The fourth figure is a manufacturing flow chart of the PU-filled tire PU wheel of the present invention. The fifth figure is a schematic sectional view showing the operation of the forming machine of the present invention. The sixth figure is a schematic plan view of the molding machine of the present invention. [Illustration of drawing number] 1 • • • pu filled tire 4 3 ·· • • molding stuffing area 1 1 • · · outer tire 4 4 ·· • • pivot 1 1 0 • • Side 4 5 ·· •• Quick release jig 1 1 1 ·· Vent hole 4 6 ·· •• Inlet 2 2 • • • PU wheel 5—— · •• Forming machine 3 • • · · PE filling machine 5 1 ·· • • Base 3 1 • · • Discharge pipe 5 2 · · • • High-speed rotating shaft 4 • • · · Mould 5 3 ·· • • Turntable 4 1 • · · Upper mold 5 4 ·· •• Brake device 4 2 • ·· Lower mold 5 5 ·· •• Guard 4 2 1 · • Heating tube A • •

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Claims (1)

Sixth, the scope of patent application:-delete the method of filling tires, PU wheels, including the following 1 β filler into the mold: PU material is filled with PU from the right side of the molded filler area;, the discharge pipe is injected into the mold 2 · Centrifugal operation and heating and foaming ·· When the filler is inserted into the hibiscus, the mold is rotated at high speed :: win the high-speed rotating shaft 3 The material is simultaneously heated and heated. "The heated official mold in the mold is taken out of the mold. The rotation of the speed shaft is stopped. After repairing, repairing and removing excess material and burrs from the molded product, it becomes a finished product. ΙΗ Page 8