TW483815B - Apparatus for forming molded articles, and method and system for injection molding articles - Google Patents

Abstract

At least one mold is provided having a mold cavity and a mold gate communicating with the mold cavity, an injection nozzle for feeding molten plastic material to the injection mold having a nozzle outlet in line with the mold gate, and a thin movable valve arrangement positioned between the mold gate and nozzle outlet having an orifice therein permitting and shutting off flow of molten plastic from the nozzle to the mold.

Description

483815 A7 B7 V. Description of the Invention (/ Cross Reference Printing by Employee Consumer Cooperatives of the Central Bureau of Standards, Ministry of Economic Affairs, Related References This application protects the US application number 60/044 on March 20, 1997. Interest in provisional application 454. BACKGROUND OF THE INVENTION The present invention relates to an improved process and device for forming objects from molten plastic expanded materials, which includes an innovative mold valve device and a mold valve for various shapes of injection mold objects In the prior art, various valve devices used to regulate the heating of plastic raw materials from such raw material sources to the mold cavity space have been mentioned. In many cases, the specification is satisfactorily achieved in a hot or cold rotor nozzle. The dissolving flow can enter the mold cavity space through a mold door by using a valve handle located in the melting channel of the nozzle. The valve handle is driven by a driving mechanism typically located in the rear plate of the mold to open and Close the passage of melt flow to the cavity space of the mold. When this method is used to form demanding objects, such as blowable presses formed from a single or multiple raw materials There are several disadvantages. One disadvantage is that the system requires the use of multiple valve stems. In this device, when it ensures that all valve stems open and close at the same time, individual actions of the valve stems can cause problems. Second, the valve stem There is a tendency to split the melted material flow, thus creating what is known as an unacceptable tissue streamline. In addition, when at least two materials are injected into the same cavity space, the action of the valve stem can cause trouble for multiple material injection nozzles. The solution to these two problems is to use a side valve device with a door opening. A door opening is shown in US Patent No. 4,108,956 issued to Lee. The method in Lee's patent is not very Effective. When using it to solve the aforementioned

I

The size of the paper is in accordance with the Chinese National Standard (CNS) Λ4 specification (210x 297 male ®) 483815 A7 B7 V. Description of the invention (meaning) In the first and second disadvantages, it did not simplify the mold design and operation. In fact, it complicates mold design and movement. Lee's valve arrangement involves the use of a mutually movable sliding element having at least one opening. The Yanhai sliding element is placed between a source of thermoplastic material, such as a thermal converter outlet or injection nozzle, and a mold door. In both of these patents, it is seen that the movable valve has a block of plastic raw material scrap formed as the valve moves from an open state to a closed state. During the cooling step, the waste block solidifies. The presence of scrap pieces in the valve opening requires the device to include additional and special mechanisms to remove it from the valve opening. In case the scrap block is not sprayed from the valve opening, it will be brought back to the mold door area and shot into the cavity space with the next injection. In many applications, this is unacceptable because it reduces the aesthetic and strength characteristics of the formed article. This becomes more stringent in forming multiple raw materials where it is necessary to avoid mixing two or more different raw materials. The consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs is printed in Li's patent. A movable mechanical injection unit driven by a pneumatic mechanism (as complicated as a classic valve handle) is placed in Over the forming machine to remove cooled scrap pieces from the valve opening. Other mechanisms not shown in Lee's patent must be further used to remove these scrap pieces from the mold. It is difficult to use these mechanisms in a system using a multi-cavity mold ' such as having more than sixteen cavities made by beneficiaries of existing applications. For example, if these moving mechanical injection devices were to be accommodated, these molds would become large and heavy. In addition, additional detection mechanisms are needed to be sure that the scrap block is really ejected from each opening. A further economic disadvantage of a machine such as Li's patent is that the _ _____4__________ This paper size applies to the Chinese National Standard (CNS) Λ4 specification (2 丨 0X 297 mm) 483815 A7 B7 V. Description of the invention (g) Waste block Wasted materials that could have been used to make shaped articles. In addition to the problem of removing and wasting the waste block, these systems must face the potential problem of having a melted plastic material flow between the surface of the valve and the adjacent formwork and the hood of the converter. In the event that molten plastic material flows between these surfaces and remains in it, if the plastic material solidifies, the operation of the valve and the machine itself will be disrupted. A valve device from Lee was previously used to control the flow of melt from the injection nozzle of the machine to a mold as shown in U.S. Patent Bielfeldt No. 3,632,729. Of course, the valve device shown in Li's patent is not designed or suitable for use with a variety of raw material injection nozzles, such as U.S. Patent Nos. 4,863,665; 552005207; 5,143,733; 5,112,212; Ministry of Economic Affairs Central Standard Bureau Staff Consumer Cooperatives 4,863,369 The valves disclosed in Nos. 4,808,101; 4,775,308; 4,717,324; 4,701,292 and 4,657,496, all the rights and interests of the beneficiaries granted to this patent and all patents hereby incorporated by reference are disclosed in these applications. Lee's method is not very useful in forming multiple raw materials because it generates too much waste made of different raw materials. Further, the need to process more than one type of waste block will increase technical difficulty and increase costs. . There is also a conventional technique for removing a crystalline gate mark from a parison (preform) by using mutually movable cutting edges. Such a system is shown in U.S. Patent No. 4,380,423 issued to Aoki. Although Aoki's patent deals with the removal of gates from already formed objects, it does not address how to open and close the flow of molten material from a thermal converter system to a mold door without forming a knot that needs to be cut off in subsequent operations. ________5______ This paper size applies the Chinese National Standard (CNS) Λ4 specification (21〇X 2 () 7 public steps) 483815 A7 ________B7 V. Description of the invention (grabbing) This is a serious problem of lock marks on crystals. Similar to Lee's scrap pieces, the sluice marks crystallized by Aoki severely waste valuable resin, causing the aforementioned problems. Therefore, there is still a need for a simpler and more effective mold valve device for a multi-material injection nozzle. There is also a need for a mold valve device for injecting multiple or one material, in which the molten material flow from a hot or cold converter system or injection nozzle to a mold door can be disturbed without causing waste of material to be formed. What is further needed is a mold valve device that does not need to include a removable and / or mechanical unit for removing the plastic material to be formed from the valve. SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a simpler and more efficient valve device and method for operating a hot or cold converter injection nozzle that can be more easily manufactured, operated, and serviced for injection molding well. object. Another object of the present invention is to provide a valve device and method, wherein the valve gate mechanism is located outside the injection nozzle. Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economics Another object of the present invention is to provide a valve device and method in which an elongate movable blade is used instead of a valve handle, the blade includes a minimum The gate of the volume. Another main object of the present invention is to provide a valve device and method, wherein during the injection process, almost no raw material is deviated from the molten raw material stream by the movable gate. Another main purpose of the present invention is to provide a simpler and more 6__ This paper size is applicable to the National Valve Standard (CNS) Λ4 specification (210X2 ^ 7 mm) of the paper size. Employee consumption cooperation: printing and effective valve method and device for single-to-raw materials and multiple raw material molds having the aforementioned characteristics./ Another object of the present invention is to provide a molding method which is almost made of single or multiple raw materials. Device and method for scoring plastic objects. Another object of the present invention is to provide a device and method for forming non-crystalline plastic objects made of single or multiple raw materials. Another object of the present invention is to provide a non-structured object. Apparatus and method for streamlined plastic objects. The present invention is applied to a mold having one or more injection nozzles that guide at least one molten material, preferably having a tubular shape, to one or more cavity spaces. More particularly, the present invention discloses an elongate movable valve device and a valve located on the outside of the single or multiple raw material injection nozzles. A method for making a mold, using which no material can be deviated from the melt flow during the transportation from a single raw material or multiple raw material injection nozzles to the mold cavity space. Accordingly, the movement of the valve gate mechanism is almost No extra raw materials are produced. Many advantages of the present invention are obtained by having almost no raw material pieces remaining in the mold. For example, the mold is very easy to design and produce because it has fewer mechanical or movable parts, and it is easy to Manufacture, operation, and service and do not require additional equipment to remove or cut the gate when the object is formed. In addition, the molten material is scarcely wasted, so the mold can operate in a smaller, cleaner environment. More Progressively, 'formed articles have more quotient mechanical strength and higher aesthetic value. According to the present invention, a device for forming a molded article is widely packaged.

I

I

This paper size is applicable to China National Standards (CNS) Λ4 specification (21 × 2e) 7 public holidays) 483815 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 __B7_ V. Description of the invention U) Includes one or more molds A cavity space and an injection mold of a mold door communicating with the mold cavity spaces; one for supplying molten plastic material to the mold cavity space having at least one nozzle outlet on the same line as the mold doors Or multiple injection nozzles; a movable valve mechanism, such as a blade, is placed between the die door and at least one nozzle outlet and has an opening with a minimum volume in its interior. A first position for communicating with the nozzle outlet and the mold door at the opening and allowing the molten plastic flow from the at least one nozzle to the mold door and a second position which obstructs the flow from the at least one nozzle to the mold door During the process of moving the valve between the valve gate mechanism and the valve gate mechanism sufficiently small to move the valve gate mechanism between the first and second positions, the valve gate mechanism hardly took away or scattered plastic materials. The present invention provides a method for forming a molded plastic article, the method comprising the steps of: passing at least one nozzle outlet from an injection nozzle to a mold type of an injection mold through a mold door substantially aligned with the at least one nozzle outlet The cavity space supplies at least one molten plastic material; and by forming a thin, movable valve gate mechanism with an opening in the interior of the mold door and at least one nozzle outlet during molding, and at the outlet A first position in communication with at least one nozzle outlet and the mold door and allowing the molten plastic flow from the at least one nozzle to the mold door and a second position impeding flow from the at least one nozzle to the mold door, to move the The valve gate mechanism almost prevents wasted molten plastic material and the thin valve gate mechanism hardly transports any molten plastic material as the valve moves between the first and second positions. ___8 This paper size applies the Chinese National Standard (CNS) Λ4 specification (2ΙΟ χ2 [) 7 public holidays)-(Please read the precautions on the back before filling in ·

It

, 1T

483815 A7 B7 V. Description of the invention (1) The device and method of the present invention are particularly useful in injection molding systems, which include multiple raw material injection nozzles that inject two or more raw materials into a mold cavity space. The valve gate mechanism of the present invention may be designed to allow continuous raw material injection into the mold cavity space or simultaneous injection of raw material into the mold cavity space. At the same time, the valve gate mechanism is sufficiently thin so that when it moves between multiple positions without generating any remaining raw material that must be removed, the valve gate mechanism takes away little material. When multiple raw materials are injected, the valve gate mechanism according to the present invention may have multiple gates. Printed by a Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs According to a further aspect of the present invention, the valve gate mechanism is ideally placed closer to the cavity space of the mold and the height of the remaining gates or gate marks The smallest. According to another aspect, the valve gate mechanism is at a certain temperature so that no crystals are generated in the area of the shaped article with the mold exit or the mold door. When the injected raw material is, for example, PET, no tissue flow lines are generated in the formed article. The valve gate mechanism may be a single edge, preferably a double edge that moves in the opposite direction, a disc element or a cup element. A plurality of actuating elements for moving the valve gate mechanism are individually or collectively placed on one or both sides thereof. In addition, since no valve stem is located in the melting channel of the injection nozzle in the present invention, the formed article has no tissue streamlines and a faster injection cycle can be realized. Further features and advantages of the present invention will be described below. Brief description of the drawings In conjunction with the following drawings, the present invention will be more easily understood. Among them: the first figure is a cross-sectional view of a multi-cavity mold system according to the present invention; the paper size is applicable to the Chinese national standard (CNS) Λ4 Specifications (2! 0 > < .2 () 7 public pedal) 483815 Λ7 B7 V. Description of the invention (The second A and the second B printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs are a valve blade according to the invention A top view and a perspective view of a third view; an enlarged, detailed view of a nozzle, a blade and a mold of the present invention; the fourth view is a partial cross-sectional view of a shaped object prepared in advance according to the present invention; the fifth A, Figures 5B and 5C show an alternative embodiment of the present invention with an independent valve gate mechanism acting on each mold cavity; Figure 6A shows an alternative embodiment of a valve device according to the invention; Fig. 6B shows a valve device for use in a multi-injection nozzle system according to the present invention; Figs. 7A to D show the shape of an alternative blade of the present invention; The multi-blade frame combination of time movement; ninth diagrams A to D show alternative embodiments of the present invention; tenth diagram shows an alternative embodiment further for supplying two raw materials continuously or simultaneously; Figure 11 is a top view of a disc-shaped valve device; ~ Figure 12 is a sectional view of a side valve nozzle and a rotary valve device; Figure 13 is a three-material heat converter including a valve device according to the present invention A four-dimensional view of the nozzle system; FIG. 14 is a cross-sectional view of the three-material nozzle used in the embodiment of the thirteenth figure. FIG. 15 is a view that can be used with the three-material nozzle of the thirteenth figure. meaning

Order

The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X mm) 483815 A7 B7 V. Description of the invention (?) A bottom view of a valve blade used; An alternative embodiment of a valve blade used with the three-material nozzle; Figure 17 is a cross-sectional view of a three-channel valve used with the three-material nozzle of Figure 16; Figure 18 is a A cross-sectional view using the three raw materials manufactured in advance in the thirteenth figure; FIG. Nineteenth is a cross-sectional view of another two-material nozzle system having a valve device according to the present invention; A sectional view of a valve blade in the system of Fig. 9; Fig. 21 is a sectional view of a pre-manufactured two raw materials using the system of Fig. 19, and Fig. 22 is a diagram with a thermal coupling and A schematic view of a valve blade synthesized on one of the heaters; printed by the Consumer Cooperatives of the Central Standards Bureau, Ministry of Economic Affairs, 23rd A to C Two-blade valve devices are illustrated; and twenty-fourth A through C illustrate the use of one valve blade with multiple thicknesses. Detailed description of the preferred embodiment According to a preferred embodiment of the present invention, the valve gate mechanism is a novel, plastic, thin valve blade, which is ideally driven by a novel drive mechanism that operates at both ends of the blade Driven by. The drive mechanism pushes the blade and the valve port in and out to align with a die door and an injection nozzle outlet. With this method, no axiality is generated in the valve during the sliding movement of the valve blade. _11 The paper size applies the Chinese National Standard (CNS) Λ4 specification (210X 297 male elk) " " ~ B7 V. Description of the invention (Fc) mechanical or compressive stress. In another embodiment of the invention, the valve alarm mechanism is formed by a slightly stronger and thinner valve blade, which is ideally driven by a drive mechanism that operates only on one end of the blade. This is recommended for a wide range of materials with low viscosity with the edge and low cavity molds. The sliding movement of the valve blade occurs in a plane which is generally perpendicular to the molten material flow, such as a resin, and the mold door. The die door opening has an axis generally parallel to the molten material flow. According to the invention ', when the valve gate mechanism is moved between two positions, almost no raw material to be formed is transported. To achieve this, the valve gate mechanism must have a minimum thickness. The minimum thickness is selected to retain a minimum volume of material in each opening in the valve mechanism, preferably no material. The volume (V) of the raw material gathered by the valve opening with a diameter (D) during its lateral movement can be determined by the following formula. Ν = (πϋ2 / 4) Τ In order to hardly retain the molten The opening becomes the raw material of the cooling bar during the mold cooling process, and the volume of the opening should be the smallest. This can be achieved by at least three methods: the diameter D is the smallest, the thickness T of the blade at the valve area is the smallest, or both. For practical considerations, the diameter of the opening must not be absent but must have a certain ridge, and a blade having a certain thickness sufficient to prevent the formation of the cooling strip is selected. Therefore, the actual thickness of the blade is determined by the following equation (1):

Tmin = 4Vmin / 〇D2) ⑴ where Tmin = the minimum volume of the minimum thickness opening; and 12 paper sizes are applicable to the Chinese National Standard (CNS) Λ4 specification (210X 297 mm) 483815 A7 _ B7 V. Description of the invention (丨 |) D = diameter of the opening. Using the same practical method, we should also mention that the thickness Tmin of the blade located in the valve area is in most cases smaller than the diameter of the opening. T min < Dmin When the valve gate mechanism is moved between the open and closed positions, the thickness Tmin of the valve idler mechanism interrupts a stream of hot melted plastic material without generating a little scrap and not transporting Melting raw materials. The valve gate mechanism may have a thickness of 0.01 to 2 mm. Tests using different molten raw materials, different injection molding parameters, different starting mechanisms, different raw materials for the blade and different mold designs show that a valve gate mechanism with a thickness of less than 0.3mm ensures that no raw material is located on the valve The opening in the brake mechanism is reserved. According to the present invention, during opening and closing of the valve, the driving piston pushes the valve blade in one or both directions. The slidable valve blade of the present invention can be effectively used in a multi-cavity mold to effectively cut off all melting channels. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs As shown in this technology, injection molds usually have two methods that impede communication between the nozzle and the mold cavity. In the so-called hot valve method, the molten resin flow to the mold cavity is interrupted by the "cooled" mold door area after injection and before mold opening. In the so-called valve gate mechanism method, a movable valve gate handle located in the melting channel is driven to open and close the valve. Both methods have disadvantages. In the heat valve, the size of the mold valve is limited to a small diameter to allow the valve to be cooled. It also restricts the operating temperature and pressure windows from being used in a wide range. In the valve gate, the handle is located in the melting channel. ___13 This paper is applicable in the S! National Standard (CNS) Λ4 specification (2 丨 0: < 297 gong) 483815 A7 _____ B7 5. The description of the invention () So-called tissue flow lines are now produced in shaped products. None of them is effective in several applications, especially when it is required to have a small so-called gate mark and almost no crystals in the formed article. The first figure shows a multi-cavity injection mold combination 10 having a mold cavity plate 12 and a mold core plate (not shown). The mold cavity plate 12 may include one or more mold cavity spaces 32 and 34. The machine nozzle 16 supplies a molten raw material to a thermal converter channel 18 located in the manifold 20. The nozzle 16 and / or manifold 20 may include several heating elements 22 to maintain the plastic material at a suitable temperature in the thermal converter channel. The thermal converter channel 18 supplies molten plastic material to the injection nozzles 24, 26 each having a melting channel 28, 30. The mold cavity spaces 32 and 34 are formed by the mold cavity plate 12 and the mold cores 36 and 38, respectively. Cooling channels 40, 42 which receive a cooling medium from a supply source (not shown) are used to solidify the molten material. The remaining parts of the mold assembly are well known and not shown here. The injection nozzles 24 and 26 supply molten plastic materials to the mold cavities 32 and 34 through the mold gates 44 and 46, respectively. The consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs is printed in detail in Figures 2A and 2B. The sliding valve blades 48 with openings 50, 52 inside are placed in the injection nozzles 24, 26 and the mold cavity space 32. , Between 34. The blades 48 driven by the piston cylinders 56 and 58 on both sides slide sideways in the direction of the arrow 54 to open the melting channels when the blade openings 50, 52 and their respective melting channels and mold cavities are on the same line. The channel between 28, 30 and the mold cavity 32, 34 is closed when it is no longer on the same straight line. The thickness 60 of the blade 48 is the smallest, usually from 0.02 to 2 mm, so _____ 14 This paper size applies the Chinese National Standard (CNS) Λ4 specification (210X 297 mm) 483815 / Member of the Central Bureau of Standards, Ministry of Economic AffairsΗ Consumption cooperation: printed A7 B7 V. Description of the invention (f)) When the blade slides to close the door, it will not deviate from the plastic material (cooling bar) after the injection process. The width 62 of the blade 48 depends on the specially designed mold profile. The limited gap 64 (see enlarged view in Figure 3) between the nozzle 24 and the mold 12 allows the blade 48 to slide between the nozzle and the mold to prevent leakage of any plastic material leaked during the injection process. The blade is plastic, but in practice it is clamped at both ends and is in a fixed state and does not bend during its sliding movement. As shown in the fourth figure, the obtained shaped plastic article 66 hardly contains the gate marks 68 having the smallest thickness 70 and width 72. In the embodiment of Figure 5A, shorter individual blades 74, 76 are used to open and close individual nozzles 78, 80, each of which is individually driven by an individual piston cylinder 82, 84 on only one side thereof. The fifth and fifth views C and B show top views of the individual blades 74, 76 having the openings 86, 88, respectively. For the shorter one, the individual blade has poor plasticity and can be easily driven on one side. The sixth marriage shows a simple embodiment with a single blade 90 passing over rollers 92,94 and driven by cylinders 96,98. Other files are not shown in Figure 6A. The benefit of this drive method is that it is perpendicular to the mold separation line, which reduces the mold size. Figure 6B shows another alternative, compact embodiment in which a single blade passes over rollers 92,94 and is driven by cylinders 96,98. In this embodiment, there are three injection nozzles 101, 103, and 105 for supplying molten plastic material to a single, large, curved cavity space 107 via three divided mold doors 115. . The blade 90 has three and three notes. The paper & size is applicable to China National Standards (CNS) 8-4 specifications (210X297 public holiday) " (Please read the precautions on the back before filling in., R

483815 V. Description of the invention () The outlets of the injection nozzles 101, 103, and 105 and the corresponding openings of the corresponding mold door 115, 111, U3 at the same time allow the molten material to flow into the cavity space. This is recommended for large parts with radians such as automobile shock absorbers (safety levers). Figures 7A to 7D show the shape of the replacement blade. The seventh diagram A is a top view and the seventh diagram A and the seventh diagram B are respectively a top view and a side view of a blade having an opening 106, and each opening has a material 108 different from the material of the blade as a boundary to obtain a different feature. The seventh and seventh views C and D are a top view and a side view, respectively, of a blade 110 having an opening 112, and each opening 112 includes a division bar 1H in its interior to provide a split opening in its interior, allowing it to be used Inject more than one material into a single mold cavity. In the embodiment of the eighth figure, a frame 116 transported by a bracket 118 moved by a pinion (not shown) transports a plurality of blades 120. The blades 120 move back and forth with the frame for a plurality of molds. Figures 9A to 9D show a different mechanism using a mechanical mechanism such as a friction gear instead of a pneumatic mechanism, or a motor 130, 132 driving a blade 122, 124 with an opening 126, 128. The embodiment in the tenth figure shows a nozzle 134 having two passages 136, 138 and nozzle outlets 137 and 139 for different plastic materials A and B, respectively. The blade 140 has a single opening 142. The blade 14 is moved so that the opening 142 is aligned with the exit 137 and the mold door 143 in a first position and is aligned with the exit 139 and the mold door 143 in a second position. The blade 140 can be moved further, so that the opening 142 is neither related to the exit 137 nor 16 The paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

^ ϋ n I · ϋ Yi Yikou T I an n I n n ϋ 1 I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 483815 A7 —__ B7 V. Description of the Invention (8) Aligned with Exit 139. This allows the raw material a to be supplied, followed by the raw material B. The blade M0 can be driven by any of the aforementioned mechanisms. Alternatively, the blade may be fixed to simultaneously supply raw materials A and B into the mold door 143 by opening the □ 142. In most applications, one material forms the core and the other material forms the skin. In precast applications, one raw material can be pure PET and the other raw material is recycled PET. In one blade, the valve gate mechanism may be a gate disc 150 as shown in the eleventh figure. As before, the shutter 150 is placed between a nozzle outlet 154 and a shutter (not shown). The shutter 150 has one or more openings 152. The number of openings 152 depends on the number of nozzle outlets and die gates co-operating with the shutter 15o. The disc 150 has a plurality of openings 152, which are used to valve gate a single injection nozzle or at the same time the valve smells more than one nozzle. Furthermore, where the disc 150 has a plurality of openings 152, these openings may have different sizes. The diameter of the shutter 150 is determined by the nozzle outlet and the device of the mold door with which it must co-operate. During operation, the gate 150 is preferably rotated around the openings 152 to align with the nozzle outlets and the mold doors to allow molten plastic material to flow from the nozzle outlets to the first position of the mold cavity space through the mold doors and The openings 152 are between the nozzle outlets and a second position where the mold doors are misaligned. Any suitable mechanism (not shown) in conventional technology can be used to rotate the disc 150 ° between the first and second positions, for example, 'a bracket and pinion mechanism can be used to drive the disc 150 ° a limited A gap is located between the exit of each injection nozzle and the mold door to allow the element 150 to rotate without leaking molten plastic material. 17 ______ (Please read the notes on the back before filling in ^ 4)

This I, 17 The printed paper scale of the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs is applicable to the Chinese National Standard (CNS) Λ4 specification (210X2Q7 Gongjun) 483815 A7 _____B7 V. Description of the invention (4) '^ ~ Disk-shaped element 15 The thickness of 0 depends on the aforementioned equation. The disc-shaped element 15 is thin enough so that when the element moves between the first and second positions, almost no plastic material is taken away by the disc-shaped element, and almost no plastic material is formed in the opening 152 article. In this way, no molten plastic material is wasted. There is also no plastic material between the components without disturbing the operation of the disc-shaped element. Twelfth figure illustrates another embodiment of the present invention for a side gate nozzle 160 of the valve gate, the nozzle 160 has one or more outlets 162 placed in a position perpendicular to the main stream of the molten plastic material, 164. In this embodiment, the valve gate mechanism includes a rotatable cup-shaped valve gate element 166. As shown in the twelfth figure, the valve gate member 166 includes openings 168 and 170 in its side walls 172 and 174. Each opening 168, 170 communicates with a respective outlet 162 and 164 and a mold door (not shown). The gate valve element 166 printed by the Employees Cooperative of the Central Bureau of Standards of the Ministry of Economy is ideally rotated on these openings 168, 170 aligned with the nozzle outlets 162 and 164 and the mold gates to allow molten plastic material to exit through the nozzles through the mold gates Flow between one of the first positions of the mold cavity space and the second positions of the openings 168, 170 and the nozzle outlets I62, 164 and the mold doors misalignment. Any suitable mechanism in the conventional art may be used to rotate the shutter 166 between the first and second positions. For example, an elongated driving blade 175 having a bracket portion 173 may be provided. The bracket portion 173 acts on a pinion 171 connected to the valve element 166. A suitable mechanism (not shown) is connected to the blade 175 to move it back and forth and thereby rotate the valve gate member 166 by the action of the bracket 173 and the pinion 171. In a multi-cavity mold _ 18 This paper size is applicable to the Chinese National Standard Xin (CNS) Λ4 specification (210, < 2 () 7 gong) 483815 A7 Printed invention description of the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs () In the tool, each nozzle 60 is surrounded by a valve element 1δ6 and the driving blade Π7 will interact with the pinion 17 of the female valve element 166. A limited gap is located between the exit of each injection nozzle and the mold door to allow the element 166 to rotate without leaking molten plastic material. The thickness of each side wall 172, 174 depends on the aforementioned equation. Each side wall is thin enough that when the element 166 is moved between the first and second positions, almost no plastic material is taken away by the side wall, and almost no strip of plastic material is formed in the opening 168. In this way, no molten plastic material is wasted. Also, there is no plastic material between the parts without disturbing the operation of the valve element 166. It can be found that the injection mold system of the valve gate device of the present invention is particularly practical. A variety of raw materials are injected into a mold cavity space to form a variety of raw material objects, such as the multiple raw material preforms shown in Figures 18 and 21. Reference is now made to Figure 12, which illustrates an injection molding system 200 that can form an article made of three different raw materials. This system 2000 is described in U.S. Patent No. 4,863'665, which is incorporated herein by reference. The system 200 contains three sources of molten raw material designated extruders a, β and c, respectively. The hot converter system from extruder B is shown by a solid line, the hot converter system from extruder C is shown by a dotted line, and the hot converter system from extruder a is shown by a dotted line. In a typical operation, a first material from extruder A, such as pure PET, used to shape the outer surface of the article is first injected into the mold cavity 204. Subsequently, a second raw material such as pure EVOH from the extruder C prevents the resin from being injected into the mold cavity 204. Followed by a third raw material from extruder B such as repolymerized PET or any other technology 19

I fill

Order

Due to national standards in this paper () M specification (2 丨 〇> < 297 AD 483815 Λ7 _____ _B7 V. Description of the invention (~ the desired filling resin is injected into the mold cavity 204. Extruder B provides a heated manifold 206 with molten raw material B, which in turn communicates with the injection nozzle 202 through a thermal converter or channels 210, 212, 214, and 216. Reference numerals 218, 220, 222, and 224 refer to operation to control Coil valves for injection tanks or cylinders 226, 228, 230, and 232. Accordingly, a heat manifold 234 from extruder C that supplies a second raw material C is passed through a thermal converter or channels 236, 238, 240, and 242 and Each injection nozzle 202 is in communication. Coil valves 244, 246, 248, and 250 control injection tanks or cylinders 252, 254, 256, and 258. A heat collection tube 260 from extruder B is passed through thermal converters 262, 264.

266 and 268 directly supply a third raw material B to each injection nozzle 202. The operation of supplying three raw materials to the nozzle 202 is explained in detail in the '665 patent and will not be repeated here. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Now referring to Figure 14, you can see that each injection nozzle contains three channels 270, 272, and 274 for raw materials B, A, and C, respectively. Channels 270 '272 and 274 terminate at one opening 276, 278, and 280, respectively. Furthermore, the central axis of the channel 270 is a distance from the central axis of the channel 272 to the DAB, and the central axis of the channel 272 is a distance from the central axis of the channel 274 to the DAC. The system further includes a mold door 282 to allow molten material to flow into the mold cavity space 204. However, the system 200 differs from the system of U.S. Patent No. 4,863,665 in that it includes a valve blade 284 that is laterally movable in accordance with the present invention. As shown in the fourteenth and fifteenth figures, the blade 284 is _20 in the standard of this paper. The standard of the prisoner is ^^ to the specification ㈠ ^ "public celebration" 483815 Λ7 B7 V. Description of the invention (ο) Between the injection nozzle outlets 276, 278, and 280 and the mold door 282. As before, the blade 284 is thin enough so that when the valve gate 284 moves, almost no molten material is carried away by it. The blade 284 may There are openings 286 for each injection nozzle 202 separately. The blade may be moved sideways by a cylinder (not shown), so that each opening 286 is in turn within each of each injection nozzle 202 Align with openings 276 '278 and 2S0. It is possible to use an order that aligns each opening 286 and opening 278 so that raw material a is injected into the mold door 282 and enters the mold cavity space 204. Next, each opening 286 is moved with The openings 276 are aligned so that the raw material B is injected into the mold cavity space 204 through the mold door 282. Then, each opening is aligned with the opening 280, so that the raw material c flows into the mold cavity space through the mold door 282. 204. Finally, the blade was moved to a In this position, each opening 286 is not aligned with any of the outlets 276, 278, and 280 and the melted raw material flowing to the cavity space of the mold is interrupted. As shown in the sixteenth figure, the valve blade 284 has portions with three openings 290, 292, and 294 separated by a certain interval Dab and Dac. These portions allow the aforementioned injection sequence and the later-mentioned sequence to be injected sequentially. C / inject A + B or inject A + B / inject C or inject ABC. Figure 17 illustrates another type of mold door 282 'that can be used with the injection nozzle in Figure 14. As shown here The mold door 282 may have three channels 300, 302, and 304 aligned with the outlets 276, 278, and 280, respectively. The eighteenth figure illustrates one by using the thirteenth to sixteenth figures. 21 This paper size is in accordance with China National Standard (CNS) 8-4 specifications (21〇X2 () 7 male elk) " '-^ 483815 A7 ______B7 V. Description of the invention (20) A system is manufactured from raw materials A, B And C-formed three-material preforms. Nine figure 'This figure illustrates an injection nozzle 134 for injecting two raw materials A and B. The injection nozzle 134 is similar to the injection nozzle in the tenth figure and has three terminations respectively at q 13 ?, and 139, channels 136, and 138 ,. Raw materials A and B are fed into a mold cavity space through the outlets 137, and 139, and the mold door M3 '. As before, the valve blade 140' has a Openings 142, allowing continuous injection of raw materials A and b. As shown in the nineteenth and twentieth figures, the blade 14 ′ may be owned by one—two with two openings 310 and 312 to allow simultaneous injection of parts A and B. Such a device may be used to perform the following injection sequence: o) injection A / injection A + B; and thorium injection B / injection A + B. The valve blade may be used to perform other sequences. Figure 2 ^ 'shows a two-material tablet made by the valve gate device in Figures 19 and 20. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs. There are also some resin raw materials that require additional heating and better temperature control during the injection process. In this case, it is preferable to provide the valve gate device with a heater and a thermocouple. Although how to do this will be discussed in the description of one embodiment, it should be reminded that the heater and thermocouple device described here can be integrated into any valve gate device. Referring now to the twenty-second figure, a side valve gate edge 48 may have a heater 320 on its surface, such as a thin heater, and a thermocouple. The heater 320 can be used to ensure that the resin material receives the heat required for it to be properly injected. The thermocouple 322 provides the temperature measured near the opening 46 and thus allows the injection system to achieve better temperature control. The thermocouple 322 can be any of the conventional technologies. ____22_ __ This paper size applies the Chinese National Standard (CNS) Λ4 specification (: M0 × 2 (Πmm) 483815 A7 _____B7 V. Description of the invention (), 丨) Appropriate thermocouple , Such as a thin thermocouple. The heater 320 and the thermocouple 322 may be attached or placed on one surface of the blade 48 using any suitable method using conventional techniques. Referring now to Figures 23A to 23C, in some applications two blades 340 and 342 moving in opposite directions are used instead of a separate valve blade. As shown in these figures, the edges 340 and .342 each have an opening 344 and 346. These blades 34o and 342 can be moved from a first position where the openings 344 and 346 are misaligned (Figure 23B) to align the openings 344 and 346 to allow material from the injection nozzle 348 to flow into a mold cavity space (not shown) ) In the second position (Figure 23C). Any suitable mechanism (not shown) for conventional techniques can be used to move the blades 340 and 342 between the first and second positions. It is believed that this method provides more flexibility in selecting the optimal blade thickness to prevent the formation of a strip. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, although the various blade profiles have been shown to have a constant thickness, It is still possible to use a blade with multiple thicknesses T and T_ as shown in the twenty-fourth A to C diagrams. This is because in some applications, the strict thickness Tmin used to prevent the formation of a strip need only be near the mold door and its opening 400. In such a scab, the first thickness T is selected to give the blade 48 'sufficient strength to avoid bending when moving sideways. To avoid forming a strip, the second thickness T_ is located in a part of the blade in the adjacent area of each mold door opening 400. The portions of the blade 48 'having a thickness Tmin include the blade openings 50', 52 ', as previously discussed, the second thickness is selected to prevent the formation of a strip. It can also change the function of injection parameters and wait for completion. ______23 _ This paper size applies the Chinese National Standard (CNS) Λ4 specification (? "0 :, < 297) 483815 A7 B7 Employees’ Cooperatives, Intellectual Property Bureau, Ministry of Economy Printing f π rj, U V. Description of the invention () -shaped raw materials. It can be understood that the present invention is not limited to the description and drawings here, but is only considered to illustrate the best mode for embodying the present invention and is susceptible to shape, size modification, parts placement, and detailed operation. The purpose of the present invention is to include all modifications within the spirit and scope of the scope of the patent application. Explanation of component symbols 10 Multi-cavity injection mold combination 12 Mold cavity plate 16 Machine nozzle 18 Thermal converter channel 20 Manifold block 22 Heating element 24 Injection nozzle 26 Injection nozzle 28 Melting channel 30 Melting channel 32 Mold cavity space 34 Mold cavity space 36 mold core 38 mold core 40 cooling channel 42. cooling channel 44 mold door 24 -----: ------- ^ ---- ^ — Order ·

* I (Please read the precautions on the back before filling out this page) Thread 'This paper size applies to China National Standard (CNS) A4 (210 x 297 mm) 483815

V. Description of the invention () Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 46 Die gates / openings 48, 48 'sliding valve blades 50, 50' openings 52, 52 'openings 54 arrows 56 piston cylinder 58 piston cylinder 60 thickness 62 width 64 Clearance 66 Plastic object 68 Lock mark 70 Thickness 72 Width 74 Blade 76 Blade 78 Nozzle 80 Nozzle 82 Piston cylinder 84 Piston cylinder 86 Opening 88 Opening 90 Single blade 92 Roller '-------- ^ ---- ^丨 tr --------- line—AWI--(Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 483815 5 , Description of the invention ()

Printed by the Consumer Property Cooperative of the Ministry of Economic Affairs and the Intellectual Property Cooperative 94 Roller 96 Cylinder 98 Cylinder 101 Injection nozzle 103 Injection nozzle 104 Blade 105 Injection nozzle 106 Opening 107 Cavity space 108 Material 109 Opening 110 Blade 111 Opening 112 Opening 113 Opening 114 Splitter 115 mold Door 116 Frame 118 Bracket 120 Blade 122 Blade 124 Blade 126 Opening 128 Opening «-(Please read the precautions on the back before filling out this page) l · 丨 Order: • Line · This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 4 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (Article of Zhenghua ,, 1: 1: A7, B7) 5. Description of the invention () 130 Motor 132 Motor 134, 134 'Injection nozzles 136, 136 'Channel 137 Nozzle outlet 137' Outlet 138, 138 'Channel 139 Nozzle outlet 139' Outlet 140 Blade 140 'Valve gate blade 142, 142, opening 143, 143' Mold gate 150 Gate 152 opening 154 1 Nozzle outlet 160 _ Nozzle 162 , tBP 164, outlet 166 valve element 168 | opening 170 | opening 171 pinion 172 side wall 27 -------- ----- F -------- Order ---------— T. (Please read the notes on the back before filling this page) This paper size applies to Chinese National Standards (CNS) A4 specification (210 χ 297 mm) 483815 L Chromium Π: shirt 6 test > Heart: 2 ^ '· .: Α7 \ 1_ 丨, 乂', 丨 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Description of the invention (173) Bracket section 174 Side wall 175 Driving blade 177 Driving blade 200 Injection molding system 202 Injection nozzle 204 Mold cavity 206 Collecting tube 210 Thermal converter channel 212 Thermal converter channel 214 Thermal converter channel 216 Thermal converter channel 218 Wire valve 220 Line valve 222 Line valve 224 Coil valve 226 Injection tank or cylinder 228 Injection tank or cylinder 230 Injection tank or cylinder 232 Injection tank or cylinder 234 Heat collecting tube 236 Thermal converter or channel 238 Thermal converter or channel 240 Thermal converter or channel (Please read the precautions on the back before filling out this page) -1 --.---- „-Order -------— Line — This paper size applies to China National Standard (CNS) A4 Specification (210 X 297 mm) 483815

A7 B7 V. Description of the invention (Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 242 Thermal converter or channel 244 Wire valve 246 Coil valve 248 Wire valve 250 Coil valve 252 Injection tank or cylinder 254 Injection tank or cylinder 256 Injection tank or Cylinder 258 Injection tank or cylinder 260 Thermal manifold 262 Thermal converter 264 Thermal converter 266 Thermal converter 268 Thermal converter 270 Channel 272 Channel 274 Channel 276 Opening / injection nozzle 278 Opening / injection nozzle 280 Opening / injection nozzle 282, 282 'Mold door 284 Valve gate blade 286 opening 290 opening 29 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -----.— ^ ----- ^ .— Order ------ --- Line—AWI, ... (Please read the notes on the back before filling out this page) 483815

V. Description of the invention (292) 294 opening 294 opening 300 channel 302 channel 304 channel 310 opening 312 opening 320 heater 322 thermocouple 340 blade 342 blade 344 opening 346 opening 348 injection nozzle 400 opening 402 gap 404 nozzle outlet 406 mold cavity space- ---: -----_-----— --------- line—Awi •-(Please read the precautions on the back before filling out this page) Employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Co-operative prints 30 paper sizes for China National Standard (CNS) A4 (210 X 297 mm)

Claims (1)

～ δ15 ～ δ15 B8 C8i D8. Li 0 ^ o Lp VI. Patent application scope 1. A device for forming a molded object includes: at least one mold cavity space (32, 34) and one mold cavity An injection mold (12) of a space-connected mold door (44, 46); an injection nozzle (24, 26) for supplying at least one molten raw material stream to the at least one injection mold, the injection nozzle having at least One nozzle outlet approximately on the same line as the mold door; movable valve gate mechanism (48, 74, 76, 90, 104, 110, 120, 140, 284, 140 ', 48', 150, 166) The mechanism is located between the mold door and at least one injection nozzle and has at least one opening in its interior (50, 52, 86, 88, 106, 112, 126, 128, 142, 152, 168, 170, 286, 290 , 292, 294, 310, 312, 346, 344, 50 ,, 52,); for communicating with the at least one nozzle outlet and the mold door at the at least one opening and allowing the molten plastic flow to flow from the at least one nozzle to The mold door A mechanism (56, 58, 82, 84, 96, 98, 171, 173, 130, 132) that moves the valve gate mechanism between a first position and a second position that obstructs flow from at least one nozzle to the mold door The broad mechanism and the plastic flow have at least one opening in a direction perpendicular to each other; the valve gate mechanism is small enough to move the valve gate mechanism between the first and second positions Few plastic materials are taken away or scattered and no remaining waste materials are formed, and has a thickness Tmin defined by the following equation: Tmin = 4Vmin / (uD2) (1) where Tmin = minimum thickness 1 (Please read the note on the back first Please fill in this page for further information) -I Printed on the paper by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Hydrocarbons. The paper size is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) Printed by the Employees ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 483815 A8 B8 C8 ___ D8 VI. Patent application scope vmin = minimum volume of the opening; and D = diameter of the opening. 2. The device according to item 1 of the scope of patent application, wherein the valve gate mechanism includes a blade (48, 74, 76, 90, 104, 11, 120, 140, 284, 140, 48 ，） ° 3. The device according to item 2 of the scope of patent application, wherein the edge (48, 74, 76, 90, 104, 11, 120, 140, 284, 140 ,, 48,) is roughly along the mold. The door can slide sideways in a vertical direction. 4. The device according to item 1 of the scope of patent application, wherein the thickness of the valve gate mechanism is between 0.01 and 2 mm. 5. The device according to item 1 of the scope of patent application, wherein a plastic object (60) is formed in the mold cavity and has a portion (68) in contact with the valve gate mechanism, and the object of the object in contact with the valve gate mechanism The part is substantially flat and there is substantially no tissue streamline formation in its interior. 'Crystals are hardly produced in the area adjacent to the mold door. 6. The device according to item 3 of the patent application scope includes a limited gap between the injection nozzle and the mold door to allow the blade to slide and rotate without leaking plastic. 7. The device according to item 1 of the scope of patent application, wherein each opening (106) is in a straight line with a raw material different from the material of the valve gate mechanism. Each opening (112) contains a dividing bar (114) inside to provide a split opening. 02 This paper is sized to the Chinese National Standard (CNS) A4 (210 x 297 public love) (please first read the f-face (Notes for filling in this page) 483815 A8 B8 C8 D8 VI. Scope of patent application 9. The device according to item 3 of the scope of patent application includes many blades (120) carried by a frame (116). 10. The device according to item i of the patent application scope further includes: a plurality of injection nozzles (101, 103, 105) for injecting molten raw materials into a mold cavity space (107), each of the injection nozzles having An outlet; the valve gate mechanism includes a plastic blade (90) with many openings (109, 111, 113) inside; and each of the openings is aligned with a corresponding outlet in a first position to allow the A molten raw material stream flows from the injection nozzle into the mold cavity space. The device according to item 1 of the scope of patent application, wherein the valve gate mechanism includes two blades (340, 342) movable in opposite directions, each of which has an opening (344, 346) in its interior. 12. The device according to item 丨 of the patent application scope further includes: each injection nozzle (134, 134, 202) has a plurality of channels (136, 138, 136 ', 138', 270) for accommodating a large number of raw materials to be formed (272, 274); each of the channels terminates in an outlet; and the mold door (282 ') has a plurality of channels (300, 302, 304) for cooperating with these outlets. 13. The device according to item 1 of the patent application scope, wherein the valve gate mechanism includes a laterally movable blade having an opening in its inside to allow continuous injection of these materials. 14. The device according to item 1 of the scope of patent application, in which the valve gate mechanism 3 paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs & 8 & 8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 483815 ___B8S _ 6. The scope of patent application includes a laterally movable with multiple openings (290, 292, 294, 310, 312, 142, etc.) (284, 140 ') to allow continuous and simultaneous injection of these materials. 15. The device according to item 1 of the patent application scope, wherein the valve gate mechanism includes a mechanism (32) for heating the molten raw material when the molten raw material flows through the at least one opening, and for inductively flowing through the at least one Opening mechanism (322) for melting raw material temperature. 16. The device according to item 15 of the scope of patent application, wherein the valve gate mechanism includes a blade (48) having at least one opening (46) and the heating mechanism, and the induction mechanism is applied adjacent to each of the openings. One surface of the blade. 17. The device according to item 1 of the scope of patent application, wherein the valve gate mechanism includes a disc (150) having at least one of the openings (152), and the disc can be between the first position and the second position Rotatable. 18. The device according to item 1 of the scope of patent application, wherein the injection nozzle has a plurality of outlets (162'164) positioned substantially perpendicular to a mainstream of the molten plastic material passing through the injection nozzle, and the valve gate The mechanism contains a rotatable element (166), which has a number of openings (168, 170) and brackets equal in number to the number of outlets, and a small unit for rotating the element between a first position and a second position. Gear mechanism (171, I73). 19. The device according to item 1 of the patent application scope, wherein the valve gate mechanism includes a blade (48 ') having a first portion having a first thickness sufficient to substantially prevent bending thereof and a second thickness The second part, the second part is thin enough so that the blade is between the first and the second part. 4 paper sizes are applicable to China National Standard (CNS) A4 specifications (210 x 297 public love) (Please read the back first (Notes for filling in this page) 483815 A8 B8 C8 D8 _ 6. Scope of patent application When moving, almost no raw materials are taken away by the blade and almost no waste is formed. 'One (please read the notes on the back before filling out this page) 20. The device according to item 19 of the scope of patent application further includes: each of the second part has one for each of a mold door and an opening ( 400) mating openings (50 ′, 52 ′); the opening has a diameter (D); each second part has a length (L) greater than the length of its corresponding mold door to form a gap (402) And the gap is larger than the diameter of the opening. 21.-A method for injection molding of articles with almost no waste, including the following steps:. Passing at least one nozzle outlet from an injection nozzle (24, 26) through a substantially in line with at least one of the nozzle outlets. The mold door supplies at least one molten raw material to a mold cavity space (32, 34) of an injection mold (12); and by installing a thin, movable valve gate mechanism (48, 74, 76) , 90, 104, 110, 120, 140, 284, 140, 284, 140 ', 48', 150, 166, 340, 342) almost removes any melting of printed materials produced by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs ’consumer cooperatives. Waste, the thickness of the valve gate mechanism is determined by the following equation: Τηιΐη = 4νΐηΐη / (πΌ2) (1) where Tmin = minimum thickness vmin = minimum volume of the opening; and the diameter of the opening. And the valve gate mechanism is between the mold door and the at least one injection nozzle in its ____ 5 This paper size is applicable to China National Standard (CNS) A4 specification (21 × X 297 mm) 483815 88 88 ABCD 6. Apply for a patent There is an opening inside the range (50, 52, 86, 88, 106, 112, 126, 128, 142, 152, 168 '170, 286, 290, 292, 294, 310, 312 (Please read the precautions on the back first Fill out this page again), 346, 344, 50 ,, 52,), the valve 阃 machine 耩 趄 the flow of the plastic flow @ has at least one opening in a direction perpendicular to each other, the valve gate mechanism in the at least one opening and The at least one nozzle outlet communicates with the mold door and allows the molten plastic flow to move between the first position from the at least one nozzle to the mold door and a second position that obstructs the flow from the at least one nozzle to the mold door. When moving between the first and second positions, no molten material is taken away by the thin valve gate mechanism. 22_ The method according to item 21 of the patent application scope, wherein the installation step includes supplying a blade with an opening (48, 74, 76, 90, 104, 11, 120, 140, 284, 140, 48, ) And the moving step includes sliding the valve blade sideways. 23. A method according to item 22 of the scope of patent application, comprising sliding the blade laterally in a direction generally perpendicular to the mold door. 24. According to the method of the scope of patent application No. 21, the formed plastic object hardly produces crystals in the area adjacent to the mold door. Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 25. The method according to item 21 of the scope of patent application, wherein the plastic object (60) is formed in the mold cavity and has a portion (68) that is in contact with the valve mechanism The part of the object that is in contact with the valve gate mechanism is substantially flat and there is substantially no tissue streamline formation in its interior. 26. The method according to item 21 of the patent application scope includes providing an injection nozzle and a A step of limited clearance between the doors to allow the blade to move without leaking plastic. 6 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 483815 A8 B8 C8 D8 The method of claim 21, wherein the installation step includes providing a limited gap having at least one opening between the nozzle outlet and the valve alarm mechanism, and the moving step includes the first position and the first Rotate the disc between two positions. 28. The method according to item 21 of the scope of patent application further comprising: the injection nozzle (160) having a plurality of outlets (162, 164). The step includes providing a plurality of openings having a number equal to the number of these outlets (I68 (Π0), a rotatable element (166); and the moving step includes rotating the rotatable element between the first position and the second position. 29 · According to the method of the scope of application for the patent No. 21, Zhu Niu Xiangren · Provide an injection nozzle⑽ There are many channels for containing a large number of raw materials to be formed, each of which terminates at an outlet; the installation step includes A thin, laterally movable blade (284, 140, 140,) having a single opening (M2, MG) between the die door and the nozzle outlet; and continuously by continuously opening through the opening and A different these outlets are aligned between positions to move the blade to continuously supply different raw materials to the mold door. The method according to item 21 of the patent application scope further includes providing an injection nozzle (I34 ', 202 ), Each injection nozzle has a number of channels for accommodating a large number of raw materials to be formed, and each channel ends at an outlet; ___7 This paper size applies to China National Standard (CNS) A4 ^ see grid (210 X 297¾ ^^ I 'One (Please read the notes on the back before filling in the page) 483815 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A8 B8 C8 D8 VI. Application for patents This installation step includes the installation of a thin, laterally movable, many openings between the Yanhai mold door and the nozzle outlet ( 290,292,294,31〇, 312,142,); (284,140,); and continuously by moving the edge between the opening continuously and a different position where the exits are aligned. The mold door continuously supplies different original half buckets. 31. The method according to item 30 of the scope of patent application further includes: aligning the plurality of openings (310, 312) with the positions of the plurality of outlets by aligning the plurality of openings (310, 312). The position moves the blade while supplying different raw materials to the mold door. 32. A system for injection molding many objects includes: a plurality of mold cavity spaces (204); each of the mold cavity spaces has a mold door (143, 143 ', 282, 282,); A mechanism (134, 134 ', 202) for supplying at least two kinds of molten raw materials (A, B, C) to each of the mold cavity spaces by the mold door; and movable between each of the mold door and the supply mechanism Valve gate mechanism (140, 140 ,, 284); the movable valve gate mechanism has a plurality of openings (I42, I42 ', 310, 312); for communicating with the mold door at the opening to allow at least one molten plastic A mechanism (56, 58) that moves the valve gate mechanism between at least a portion of each of the mold cavity spaces and the molten raw material that flows to the mold cavity space between the blocked portion and the valve gate Institutions and the plastic flow 8 m gravel paper scales are applicable to Chinese National Standard (CNS) A4 specifications (210 X 297 Public Love Y (Please read the precautions on the back before filling this page) 483815 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs§ 6. The flow direction of the patent application is perpendicular to each other. There is at least one opening; and the valve gate mechanism is thin enough to move the valve gate between these parts At the time of the mechanism, almost no molten material is taken away by the valve gate mechanism. 33. The system according to claim 32, wherein the valve gate mechanism includes a blade having a plurality of openings in its interior. 34. The system according to item 32 of the scope of patent application, wherein the supply mechanism includes a plurality of injection nozzles, each of which has at least two channels (136, 138, 136 ', 138', 270, 272, 274), and further including a number of extruders (A, B, C), the extruder communicates with each of the injection nozzles (202) through a thermal converter channel, and each extruder feeds each of the The injection nozzle supplies one of these materials. 35. The system according to item 34 of the patent application, wherein each of the materials is continuously fed into those mold cavity spaces through the openings in the valve gate mechanism. 36. The system according to item 34 of the patent application, wherein each of the materials is simultaneously fed into the mold cavity spaces through the openings (290, 292, 310, 312) in the valve gate mechanism. 37. The system according to item 34 of the application, wherein each injection nozzle has at least two channels (136, 138, 136 ', 138, 270, 272, 274) for receiving at least two different kinds of raw materials, And each channel ends at a separate nozzle outlet (137, 139, 137 ', 139', 276, 278, 280) ° (Please read the precautions on the back before filling this page) f Order-• Line · 9 paper ruler &^; ^ Applicable to China National Standard (CNS) A4 (210 X 297 mm)