TW583063B - Method of forming bearing free of top mark by injection - Google Patents

Abstract

A method of forming a bearing free of top mark by axis injection solves the problem of a conventional injection molding of bearing where the axis concentricity reduces the balance thereof the bearing and burrs are formed at the feed opening; the structure of the mold used in the invention is improved; which comprises according to the number of the bearing to be molded, a circular channel is installed crosswisely and tilted at 45 degrees in communication with the feed opening and corresponding to the central feed opening on the male mold; the circular channel is connected to a mold core of the male mold at 120 degrees; a through hole on the top of said core of the male mold is used to communicate with said bearing hole installed at the center of the circular channel. An ejection pin is mounted inside the circular through hole at the end of said core of the male mold; said ejection pin inside to upwardly eject circular channel and said core of the male mold and said center bearing model thereof after material injection in order to re-process the model and cut off the material opening at the bearing; the bearing product has a plane at every 120 degree location so that the bearing has three concentric planes on the periphery thereof.

Description

The fifth month of the month, description of the invention (1) (applicable range of the invention) The invention is a shaft * can be concentric when molding: u :: mark forming method: its bearing on the injection molding method / • " To reduce its balance and make the bearing periphery hairless (Background and overview of the invention) Month 丨 J bearing into 荀 J, the finished product after injection molding is mostly molded from two ^ f, however, in order to remove Where the burr mi / f shoots out of the source) Among the hairs, 'its force has been changed or not &: after resharpening', but resharpening during reshaping, causing the bearing concentric two = grinding, more or ^ enough, need Once again, the occurrence of audible noise is the second difficulty, so it often causes the unevenness in rotation: "The sleepy edge, the cause of the problem, the inventor found four points, the first: after injection molding, 舳 士 σ " κ 成Mouth's must be ground to cause concentricity. _ Yi will make the peripheral edge of the bearing too much. Second: The operator is not able to grind the grinding force. = 3: Waste people X grinding time. Its production is in mass production; above, it is often the unbalanced factor that causes the bearing π. Different, leading to the rotation of the fan blades. However, the above traditional mold repairing purpose, but the relative time and manpower can be balanced in the mold in order to complete the balance in the mold itself, it is unrealistic to produce only two =, but it is unrealistic, especially the output, However, it still affects the production process, even if its production can be achieved: 9 /, quality, will inevitably produce the following

583063 V. Description of Invention (2)

First, the use of non-technical personnel to grind the peripheral edges of the bearing, its construction is not-it affects the concentricity of the bearing, so it relatively affects the increase in the rate of defective products. 2. Because the bearings are produced in a single quantity, so in manufacturing, * manual one $: Γ f grinding 'also requires additional costs for this, and grinding the burrs again and again hinders production Results and time. ". The traditional pure method of .mi is not the best method. Bearing injection is the bottleneck of an urgent breakthrough at this stage, so the inventor is urged to work on the improvement and produce the invention. · Explanation 3: 'The inventor of the invention The characteristics and effects that can be generated are firstly on the male mold of the bearing mold of the first invention, and the number of its bearings is based on the middle two = mainly, and then each at an oblique intersection and corresponding to a 45 degree angle; The mouth of the material is connected, and the male molds are connected to each other on the circular pipe. The perforations on the male top are used to connect the bearing holes at the center of the circular tube with i, i, and the male molds. The ejection through hole 2 is set inside the circular through hole at the end.> After injecting the material, the circular pipe and the ejection hole of the male mold are ejected upward with the help of the circular shape of the end of the male mold and the ejection tip of the basin +. Bearing the model, then defend this model again and cut off the material openings of the circle and the person, so that the periphery of the bearing is free of burrs and has concentricity

The ejection tip of the 22nd invention is inserted into the private through hole of the male mold with an equal amount. After the source of material is poured, the ejection model = circle with each page! Pipe and male mold die material mouth and its central god-this drawing type is processed again to cut off the male grip 说 583063

According to the i 3 U bearing, the periphery of the bearing has no burrs and has concentric circles, and the periphery of the bearing is ground. Balance effect, no need to repair directly = Ming bearing can be shot several times at a time: ί, save the time of grinding and fast for the purpose of the more forty-two;;! ： = Processing again after die-cutting and burr, prolong the service life during operation, especially can reduce the invention. ^ Bucket simplified fan blade adjustment balance ^ not {have improved the quality of bearing injection, more-mention Yes, it is worthwhile to improve the waste of manpower by 30% of the production of bearings. Please refer to the first, the second, and the most effective target effects of the industry. It is formed by injection of -body molding; as shown in the third, the present invention is mainly based on the diagonal and corresponding 4, the inlet 10 at the center, the inlet 10 intersects, and a circle is provided at each corner. Shaped pipe 11, and two sets of male mold cores for excavation, Λ official channel 1 1 at each central gate 20 and circle S at a 120 ° angle; = L1S10, so that the central position of Gongzaki mouth 20 is set—connected The central material-shaped through-hole 2 00 of the male branch 2 is inserted into the through-hole 2 0 at the end for ejecting the tip 5 from circle 4 while the male mold material is injection-molded: At the center of the circular pipe 1 i = 2 0 0 " And the perforated 2 1 is set, and when the source is set, the tip c; eight holes ^ 3 〇 are connected; Position, to be filled, circular through hole 2 at the end of male mold core 2-end of mold core 2 583063 j number 90113117

B

V. Description of the invention (4) Each of the ejection tips 5 in the through-hole 200 is upwardly ejected from the circular tube formed in the circular stem iii and the male mold core 2 material mouth 2 and the road 1 king. 3, a model 4 _ (see Figure 4), this model ^ central axis sub-cut off the male mold core 2 and the bearing hole 3 〇 inner bearing 3-under force σ a I that is provided for its periphery Drawing 3 of the plane 3 2 (as shown in Figure 31, using the eight ginseng? As shown in the fourth and fifth figures, when the bearing 3 is injection molded. Use a round through hole J 诶 at the end of the 枳 枳 2, 2 Out of the circle: the pipe η and the male mold core 2 material mouth 2 〇 = the center out of the Uehara model 4 'This model 4 is processed and cut again ~ bearing 3 2 people bearing hole position 〇 inner bearing 3 A Yi mold core, The burr, then, the bearing 3 is finished at the material mouth. The burr at the periphery of bearing 3 has no burrs and has concentric circles. When rotating ^, it can increase its rotation balance. / It will lose true after combining with fan tea. You do n’t need to repair the burr, you can see the value of industrial use (one member can benefit from its bearing ^^), but I hope that your review will be affirmed, and I will give you ^, 哏 成 垔 法 能 能The substantive function achieved is to grant a quasi-patent to Qian for protection.

Page 7 583063 _ Case No. 90113117 _ year month day _ correction diagram brief description of the diagram: the first diagram: the top view of the male mold of the present invention the second diagram: the male mold of the present invention The top view of the mold core is the third view: a cross-sectional view of the male mold of the present invention, the fourth view: a perspective view of the injection source of the present invention, and the fifth view: the perspective view of the bearing that cuts the bearing opening of the present invention.

1 • Male mold 10 · Inlet 1 1 · Circular pipeline 110 · Long hole 1 1 1 · Circular tube body 2 · Male mold core 2 0 · Feeding port 2 0 0 · Circular through hole 2 1 · Perforation 3 • Bearing 3 0 • Pumping hole position 3 1 • Feed port 3 2 • Plane 4 • Model 5 • Ejection tip 6 • Source

Page 8

Claims (1)

Injection of the model of "the male die tip is round" inserted into the core without obliquely crossing the core, and the bearing of the male die center is molded inside the male die core, and the bearing material is formed into a fork. Corresponding to this, a round pipe with a round end at the end of the pore phase in the through hole end of the round elongated mold core is provided with this mold mouth. ----- 6. Scope of patent application: A bearing inlet is mainly used for pipes, which are connected to the inlet and are provided with through-holes for circular pipes for male molds. The source model for ejection type will be in the circular pipes. After pushing out the tip and penetrating into the source, it is then connected to the circular tube bearing to form a flat surface with the bearing hole by means of the ejection. The main method is to form the male mold at a 45 degree angle on the pipe. The central end of the central opening is penetrated to prepare for the front end of the central opening to be connected. When the body in the conformal through-hole in the circular through-hole is to be filled with the male mold, the bearing is finished in one or three. A plane and a circle at the center of the male mold are each provided with a circle at a 20 degree angle. A circular ejection hole has been formed at the central mouth and position. When the injection source is set, it should be positioned first and be filled. The material is ejected from the tip, and the male mold core is cut upward to the material mouth and the center of the mold.