TWI253380B - Method for integrally forming inner and outer coating layers for hollow objects, device and structure for same - Google Patents

Abstract

A method for integrally forming inner and outer coating layers for hollow objects, device and structure for same, having a mold apparatus that can be opened along a vertical direction and design to adapt to hollow objects. The cavity in the mold apparatus is provided with an upper and a lower central pin to be controlled to extend out of or receded into an upper and a lower positioning member respectively, and a sliding collar to be controlled to extend into and recede out of the cavity. After placing a hollow object into the mold apparatus, the upper and lower positioning rods and the sliding collar help precise positioning, in order to perform a one-time, multi-stage material injection. This invention allows integral, inner and outer coatings by methods of easy one-time, multi-stage integral forming process, so as to ensure precise thickness, roundness of the inner and outer coatings of the product and to provide anti-leakage effect.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated injection molding method for an inner and outer coating layer of a hollow article, and a device and a structure thereof, and more particularly to a hollow inner and outer coating layer for use in a power device or the like. One-shot injection molding method and its device spot structure. [Prior Art] 〃 , ^ ^ i 刖咼 刖咼 technology industry and medical industry use a variety of power equipment and other requirements, and in hollow objects, must be based on the use, characteristics of the pump as an example, the main mining = external coating Floor. The metal outer wheel is magnetically sealed to the speed, and the county float is designed to make the motor drive the moving wheel and its impeller, and the magnetic type of the empty object is released. In order to inhale the liquid under the motor component and send it to the passive wheel structure of the plastic, it is necessary to = round the Γ at the high = = =;;; its magnetic "degree and two degrees a is also strictly defined. The relevant thickness of the coating is 1 3, which shows that there is a magnet ring in the middle of the 丄3), _ as an example, the aluminum sleeve (9 2 ) in which the internal function is placed is placed in the magnet ring for two sets (92). ) Then:: The empty object (9":: forming protection 4) is closed. Through the whole layer = (9 3 ) and outside: each and the convex ring (9 5 ), * the passive wheel finished product (9., the coating layer (9 (") is formed with the opposite of the joint (to K and can With - υ) and radial holes

0153-0759, ptd Page 5, 1253380, invention description (2) According to the above-mentioned conventional hollow object (9 1 ), when first, the inner circumference of the central hole of the hollow piece (9 1 ) of the hollow object (9 1 ) is determined. In order to perform the first injection operation, the outer coating (9 4 ) is formed, and after the cooling is finished, the semi-finished product is taken out and placed in another mold, and the outer layer is covered by the hollow object (9 1 ) (9 4 For the peripheral positioning, a second injection operation is performed to form the inner coating (93). The above-mentioned injection molding operation is not only cumbersome and inconvenient, but the upper and lower joints (99) of the inner and outer coating layers (93) and (94) (see the $3 diagram) are constructed in a case where the impact or molding work is poor. : It is prone to cracking or leakage, which causes damage to the magnet ring and pump. At the same time, since the inner and outer coatings (9 3 ) and ( 9 4 ) are subjected to two separate injection moldings, the inner and outer roundness errors are large, which affects the rotation balance, which also has the disadvantage of vibration and noise. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for injecting and forming a hollow body inside and outside a cover body, and a device and a structure thereof, in particular, a more convenient and quicker one: a body forming method, a segmental injection, an integrated inner and outer: 丄The finished product has a more precise thickness, roundness and leakage prevention. In order to achieve the above object, the molding method of the present invention comprises an opening and closing control formed by an injection molding die and a lower die, and a corresponding upper mold core column and an associated injection passage of the hollow object; the projectile member is placed inside the mold; Forming a relative position of the injection nozzle integrally formed by the inner and outer coating layers of a hollow object; the upper mold and the lower mold are provided with a matching hole and a lower mold hole, an upper center column and a lower middle molding step comprising: Most of the above-mentioned hollow one hydraulic cylinders are located above

0153-0759.ptd upper and lower end faces' while the sliding sleeve locates the inner circumference of the hollow object; L lower mold cavity, upper and lower center column and hollow object structure 1253380 V. Invention description (3) 中心 upper center column The upper positioning rod of the outer periphery extends downwardly into the upper end surface of the hollow object above the upper mold position; and a lower hydraulic rod is used to drive the lower positioning rod of the outer circumference of the lower column below the lower mold to extend upward to locate the above a lower end surface of the hollow member; a sliding sleeve disposed at an outer edge of the center pillar below the lower mold by a third oil pressure is extended upwardly to position the inner circumference of the hollow object; and the central column and the hollow object of the upper and lower molds are mutually The first segment of the hollow object is initially formed in the space to form an inner and outer coating layer; in the above, the control is carried out, the sleeve is taken down to the lower die hole, and the second segment of the injection material is controlled by the second and second hydraulic cylinders. The upper positioning rod and the lower positioning rod, the upper mold hole and the lower mold hole, and the third stage shot; and the mold is taken out to take out the finished product. The inner and outer coating layers of the hollow article of the present invention are integrally formed by injection molding on the opposite positions of the injection nozzle of the two injection molding machine, and an opening and closing control mold composed of an upper mold is provided, and the upper mold and the lower mold are provided with opposite upper mold holes of the matching object and The lower mold hole, the upper center column and the lower center, the material passage 'includes: the outer circumference of the center column above the upper mold is designed to be lifted and lowered by a hydraulic cylinder, and is controlled to extend into the lower part of the lower mold. The outer part of the center column is provided with a plurality of lower positioning rods, and the oil pressure is controlled by the rainbow to control the lifting and lowering, and the lower end of the lower core column is provided with a sliding sleeve, and a third hydraulic cylinder is used to control the lifting and lowering. The lower mold hole; the upper and lower positioning rods respectively position the above-mentioned points, so that a majority of the mold holes are located in the lower mold cylinder to control a mold hole, to the hole, the upper and lower materials, to be in the third oil pressure; The hollow column and the lower part of the lower mold are separated from the upper mold by a second mold, and are placed in a controlled hollow object, and are integrally formed.

0153-0759.ptd

^53380 V. Description of invention (4) Material slope space. However, in the hollow object of the present invention, the two objects have a central hole, and the upper and lower end faces are integrated. [Embodiment] The novelty of the present invention and the detailed description of the examples thereof tend to be clear, first referring to FIG. 4, The passive wheel body of such a device is injection-molded, and is provided for strict coating, such as the above-mentioned hollow outer coating layer, which is integrally molded and formed on the outer surface of the hollow object, and the coating layer. ^The above-mentioned middle mask has a slope coating at one end of the nozzle 2) The upper position is set to control the mold (13) The top upper seat is set on the upper (16) Hole hollow object empty object (the body cover is injected into (11) 'Injecting an upper mold. On the substrate shown in the figure ((15) seat (preset between 1 and 5 (91 9 1) layers (the top plate of the injection molding machine of the 9-type device (20th embodiment 3 1)) Most of them are characterized by the following: (9 〇 one-piece (9) and its outer peripheral surface 〇1) of the feasible molding machine (1 〇) and the lower middle 'lower i' on the ^ 2 ! [1 will be fitted with the inner and outer coatings (ggi9 1) magnet ring and its aluminum sleeve) in the inner and outer coatings of the following drawings: In the model of the mold, (9 2 ) the inner peripheral surface of the core hole is shown in the fifth figure. Basically, 0) is set at ~ the nozzle (1 3 0) is set at 2 0) Up and down the fans inside ~ contain the rack (1) open the frame flat in one phase (16 in the upper and lower seat (1 5 ) 'Supply a cylinder of oil (the lower part of the heart is outside the front 1 pair of closed To )

0153-0759.ptd face 7

Hi

1253380 V. INSTRUCTIONS (5) 4) The upper control (1 5) and the upper mold (20) are moved up and down to control the opening or closing of the mold. Referring now to Figures 6 and 7, the upper die (20) and the lower die (30) are provided with a hollow object (9 1 ) and its finished product (900) (the passive wheel is shown in Figure 4). The upper mold hole (2 2) and the lower mold hole (32), the upper center column (23) and the lower center column (3 3) and the associated projectile passage. In this embodiment, the associated shot channel includes opposing shot channels (25), (35) leading from the outside of the mold to the inside, and loops disposed at the end of the shot channels (25), (35) ( 26), (36), and a plurality of shot holes (2 7 ), (3 7 ) that communicate with the loops (2 6 ) and ( 3 6 ). Further, the upper mold (20) is provided with a plurality of upper positioning rods (40) which can be lifted and lowered by a first hydraulic cylinder (4 1 ), which are located outside the upper center column (23), and can be Controlled extension into the upper cavity (2 2 ). The lower mold (30) is provided with a plurality of lower positioning rods (50) that can be lifted and lowered by a second hydraulic cylinder (5 1 ), which are located outside the lower center column (3 3 ) and can be controlled to extend. Enter and exit the lower cavity (3 2). When the hollow member (9 1 ) and the aluminum sleeve (9 2 ) are placed in the mold, the upper and lower positioning rods (40) and (50) are controlled to extend into the upper and lower mold holes (22) and (32). In order to position the upper end surface of the hollow object (9 1 ), an integral inner and outer coating layer for the injection molding is prepared. In the preferred embodiment shown, the upper positioning rods (40) can be set to four at equal intervals of ninety degrees, and the lower positioning rods (50) can be equally spaced at equal intervals. At the same time, in the illustrated embodiment, the upper and lower positioning

0153-0759.ptd Page 9 1253380 V. INSTRUCTIONS (6) The roots of the rods (4 0 ) and ( 5 〇) are connected to the lift plate of the (3 0 ) internal relevant position (4 2 lower die (2 〇 The lifting plates (4 2 ), (52) iif ^ , ( 5 2 ), "1) and the second oil cylinder 51 are connected to the first oil pan 3 ). 1 〇 1 ) piston rod C 4 3 ) , ( 5 is set in the lower mold (3 〇) sliding sleeve, (7 〇), can also be controlled to extend into the lower mold g) Upper and lower positioning rods (4〇), 2), for the fittings (9 i ), the inner circle: (9 2 ) inner circle:] positioned in the air, the root of the sliding sleeve (70) is connected to the lower part] In the embodiment, the lifting plate (72) of the relevant position, the piston rod (7) of the third hydraulic cylinder (7 1 ) inside the (3) is connected to the guiding column (3 4 ) guide. 'And with the side in the preferred embodiment, it is optional to add a horizontal plunger (60) that controls the lateral advance and retreat with a -4th hydraulic pressure: 2 (2 〇) moving plate (Θ 2 ), This one) and its live majority of the positioning rod (4 〇) staggered side: 〇) with the above-mentioned center column (2 3) jack (2 4 ^ shell: upper core eight (2 2) and the upper wheel ring The relevant radial holes are formed in the passive embodiment as shown above, and the outer circumference of the lower mold can also be preset to the center of the top 浐, 0) (3 3 cylinders (81), lifting plates (8 [〇^'曰 and by a fifth hydraulic pressure, with controlled extension into the lower mold cavity, the active base rod (8 3 ) controls the lifting and lowering of the majority of the lower positioning rod (5 〇) to twist 2). (8 0 ) ^ M staggered way up and down. 0153-0759.ptd Page 10 1253380 Description of invention (Iron ring Figure 3: The invention first places the hollow object (91) magnetic position rod (4 (9 2)) The inside of the nuclear instrument, and then drive up and down 2) f, (5 0) and sliding sleeve (7 〇) into the upper and lower cavity (production Lu (9 2 section shot, ^ 2) 'for positioning hollow objects (91 Upper and lower end face cavity 4 0 2 ) ) The inner circumferential position. Then, as shown in Fig. 9, when the sliding sleeve (70) is controlled to exit the lower B as shown in Fig. 1, the second section of the shot is matched and positioned up and down. The rod ((5 〇) can be controlled to exit the upper and lower mold holes (2 1 2 η ^ 2 ) day size as shown in Figure 1 1 to carry out the second stage shot, and after cooling, such as: Exit the horizontal plunging rod (60), complete the sub-segment injection, one of the hollow objects (Θ1), the inner and outer coating layers (9 〇) basin; the upper 3 diagram shows the ejector rod preset below (8 0) action, gossip, the product (90 〇) is ejected under the mold opening state. The secret fee is different from the prior art, and it is necessary to separately form the t-cladding layer and the outer coating layer of such hollow objects successively. The invention can more easily and conveniently form a one-piece inner and outer coating layer of such a hollow object in a single segment. Since the lower end surface and the inner peripheral wall of the middle object are shot and formed under the synchronous positioning, the hollow body is formed. The thickness and roundness of the cladding in the m gas can be precisely controlled to improve the overall rotational balance and prevent damage to the equipment. The present invention is intended to be illustrative only and not restrictive, and various modifications and modifications may be made without departing from the spirit and scope of the invention.

0153-0759.ptd Page 111253380 Brief description of the diagram [Simple description of the diagram] Figure 1 is a perspective view of the conventional magnetic pump passive wheel; Figure 2 is a perspective view of the hollow object inside Figure 1; Figure 3 shows the first Figure 4 is a cross-sectional view of the inner and outer coating of the hollow article in the preferred embodiment of the present invention; Figure 5 is a front view of the molding apparatus of the present invention; and Figure 6 is a sectional view of the upper and lower molds of Figure 5. Sectional cross-sectional view; Fig. 7 shows the closed mode state diagram of Fig. 6; Fig. 8 shows an enlarged sectional view of the partial member of Fig. 7; Fig. 9 shows the first section of the shot of Fig. 8; Further diagram of the second stage of the shot; FIG. 1 shows a schematic diagram of the third stage of the shot; FIG. 2 shows a schematic view of the mold opening operation of the present invention; and FIG. [Main component symbol description] (1 0) Injection molding machine (1 1 ) Shooting nozzle (1 2 ) Rack (13) Platform (14) Hydraulic cylinder (15) Upper seat (1 6 ) Lower seat (1 7 ) Post (2 0) upper die (2 3 ) upper center post (2 6) loop (3 0) lower die (3 3) lower center post (2 1) top plate (2 4 ) jack (2 7 ) shot Feed hole (3 1 ) substrate (3 4 ) guide post (2 2 ) upper mold hole (2 5 ) shot hole (3 2 ) lower mold hole (3 5 ) shot hole

0153-0759.ptd Page 12 1253380 Brief description of the diagram (3 6) Positioning rod (4 2 ) on the ring (4 0 ) Lifting plate (5 0 ) Lower positioning rod (5 2 ) Lifting plate (60) Insert Rod (6 2 ) movable plate (7 0 ) sliding sleeve (7 2 ) lifting plate (8 0 ) ejector rod (8 2 ) lifting plate (9 1 ) hollow object (900) finished product (9 0 1 ) inside and outside Phi (3 7 ) shot hole (4 1 ) first hydraulic cylinder (4 3 ) piston rod (5 1) second hydraulic cylinder (5 3 ) piston rod (6 1 ) fourth hydraulic cylinder (6 3 Piston rod (7 1 ) third hydraulic cylinder (7 3 ) piston rod (8 1 ) fifth hydraulic cylinder (8 3 ) piston rod (9 2 ) aluminum jacket

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Claims (1)

1253380 A first hydraulic cylinder is used to drive and control most of the upper positioning rods located on the upper outer circumference to extend into the upper mold hole, and the upper end surface of the column object is fixed; Under the lower mold, the lower positioning rod of the week extends upward into the lower mold hole to position: the lower end surface of the object; the τ worker drives the sliding sleeve of the third oil cylinder to extend upward. Entering the lower cavity, the circumferential position; is disposed outside the central die below the lower die to locate the inner circle of the hollow object, and the first segment of the upper die, the upper and lower center pillars and the hollow object are spaced apart from each other to perform the first segment of the shot, Firstly, the hollow object is integrally formed into an inner and outer slope coating; the third hydraulic cylinder is used to drive the sliding sleeve downward to exit the lower mold hole, and the second section of the shot is made; '7 with the first and second oils mentioned above The pressure cylinder drives the upper positioning rod and the lower positioning rod to exit the upper mold hole and the lower mold hole respectively, and performs the third stage shot material, and after cooling, opens the mold to take out the finished product. 2 · As in the patent application scope, the inner and outer coatings of the hollow object are one shot 0153-0759 (without line).ptd Page 14 !253380 The scope of the patent application is a molding method in which the rod passes through the first, second and third stages of the above-mentioned upper mold cavity to take out the finished product. 3 · If the patent application scope is the first molding method, among them, the rod. ', 4 · If the patent application scope is the first molding method, the center of the lower mold is topped up to the finished product. 5 · If the patent application scope is out of the molding method, wherein, 〇6 · a hollow object inside and outside the molding machine, the opening and closing control mold of the injection nozzle, the relative upper mold hole and the injection passage; the step includes a step four Hydraulic cylinder drive control - horizontal insertion = radial insertion hole of the upper center column, and then the above-mentioned oblique 'after cooling' exits the above-mentioned plunger, and then opens two inner and outer coating layers of the hollow object to integrally shoot the horizontal insertion The rod system is staggered from the above-mentioned plurality of upper objects, and the inner and outer coating layers of the hollow object are integrally fired and further controlled by a fifth hydraulic cylinder to extend the top rod of the outer circumference of the body into the lower mold hole, to 4 items. The inner and outer coating layers of the hollow object integrally project the ejector rods, and the plurality of lower positioning rod coating layers are integrally formed by the injection molding device, and the upper mold and the lower mold are formed at the opposite positions to form the upper mold and the lower mold. The mold is provided with the hollow body lower mold hole, the upper center column and the lower center column, and the lower center column is provided with a plurality of upper positioning rods on the outer circumference of the upper part of the upper mold, and the hydraulic cylinder is used to control the lifting and lowering. Control the extension into the upper cavity; under Under the die, a plurality of lower positioning rods are arranged on the outer circumference of the central column, and a first-one oil cylinder is used to control the lifting and lowering to control the extension to enter the lower mold hole; under the lower mold, a sliding sleeve is arranged on the outer edge of the central column, a third oil pressure Η月μ曰_Revision! 253380 Six case number 93128137 Patent application range cylinder drive control lift, with controlled extension into the lower die hole; Hunting by the upper and lower positioning rods respectively locate the upper and lower end faces of the above hollow object two: the sliding sleeve is positioned hollow The inner circumferential position of the object, and above and below the space;]. The upper and lower middle columns and the hollow objects are formed with each other - the body projecting material is covered by the body of the hollow object in the sixth paragraph of the patent scope: the molding device, wherein the upper mold cavity and the upper center are::: system: And a horizontal insertion rod penetrates the radial insertion hole, and is controlled by a fourth hydraulic cylinder to advance and retreat. 8. The integrated inner and outer coating layer injection molding apparatus for a hollow article according to claim 7, wherein the horizontal insertion rod is staggered from the plurality of upper positioning rods. 9. The apparatus of claim 6, wherein the inner and outer coatings of the hollow object are integrally fired, wherein the outer part of the lower part of the lower mold is provided with a majority of mountains; and 'dry and driven by a fifth hydraulic pressure Control the lifting and lowering, and control the extension to exit the lower cavity. ® ^9 ^^f ^ ^ ^ ^ ^ t ^ ^ Position. 'Setting' in the above-mentioned top rod is staggered by the majority of the above parameters