TW202005777A - Mold unit and modular mold capable of achieving the advantages of easy use and maintenance, and low cost - Google Patents

Abstract

A mold unit includes a feeding conveying pipe, at least one mold core, and at least one output member. The feeding pipe has a runner and at least one output port connected with the runner. The runner is configured to transfer a plastic material and the output port is configured to discharge the plastic material in the runner. The mold core has a cavity and an injection port connected to the cavity. The injection port is configured to receive the plastic material and inject the plastic material into the cavity. At least one output member is disposed on at least one output port and is connected to at least one injection port of the mold core to communicate the output port and the injection port, such that the plastic material in the runner can be input into the cavity of the mold core. A plurality of the above-mentioned mold units can be combined to form a modular mold. Such modular mold can achieve the advantages of easy use and maintenance, and low cost.

Description

Mold unit and modular mold

The invention relates to a mold unit and a modular mold; in particular, it refers to a mold unit and a modular mold with low manufacturing cost and easy maintenance.

Medical plastic consumables, such as syringes, are usually manufactured by injection molding through a mold. In order to carry out mass production at the same time, multiple cavities are formed on the same mold, and a runner connected to each cavity is formed in the mold. The molten plastic can be injected into each cavity through the runner to cool the cavity to complete the product. In addition, not only plastic consumables for medical use, but also plastic products in other fields can be mass-produced using the above method.

However, forming a number of finer and finer cavities in a larger mold, and forming a runner that can connect the cavities inside, requires higher technology for the production of the mold, and its manufacturing cost Higher. On the contrary, when one or several cavity of the above-mentioned large mold is damaged, or a part of the runner is damaged, the entire mold must be removed for repair and the damaged part cannot be repaired separately. At this time, other normal parts of the mold will be affected. Affected by injection molding process. If the damaged part cannot be repaired, the entire mold must also be replaced instead of only the damaged part. Therefore, the conventional molds are relatively inconvenient and expensive to manufacture or maintain.

On the other hand, although large-scale molds can produce a large number of plastic products at one time, since the mold cavities are connected to each other through the runner, the quantity produced at a time is fixed and cannot be adjusted. Moreover, the shape of the manufactured product has been determined at the time of production of this large mold, which is relatively inconvenient in use.

Therefore, it is necessary to develop new molds to solve the above problems.

In view of this, the purpose of the present invention is to provide a mold unit with lower manufacturing cost and easy use and maintenance, which can solve the problems of the prior art.

In order to achieve the above object, the mold unit provided by the present invention includes a feed pipe, at least one mold core, and at least one output member. The feed pipe has a sprue and at least one output port communicating with the sprue, wherein the sprue is used to transfer plastic and at least one output port can output the plastic in the sprue. At least one mold core has a mold cavity and an injection port connecting the mold cavity, wherein the injection port can be used to receive plastic and inject the plastic into the mold cavity. At least one output member may be respectively disposed on the at least one output port, and may be connected to at least one injection port of the mold core to communicate the output port and the injection port. In this way, the plastic can be input into the cavity of the mold core through the runner of the feed pipe for injection molding.

Another object of the present invention is to provide a modular mold, which has lower manufacturing cost and is easy to use and maintain, and other normal mold units can still be processed during maintenance, which can solve the problems of the prior art.

In order to achieve the above object, the modular mold provided by the present invention includes a plurality of mold units that can be combined with each other, wherein each mold unit includes a feed pipe, at least one mold core, and at least one output member. The feed pipe has a sprue and at least one output port communicating with the sprue, wherein the sprue is used to transfer plastic and at least one output port can output the plastic in the sprue. At least one mold core has a mold cavity and an injection port connecting the mold cavity, wherein the injection port can be used to receive plastic and inject the plastic into the mold cavity. At least one output member may be respectively disposed on the at least one output port, and may be connected to at least one injection port of the mold core to communicate the output port and the injection port. In this way, the plastic can be input into the cavity of the mold core through the runner of the feed pipe for injection molding.

In this way, the modular mold of the present invention can integrate multiple smaller mold units into a larger mold, which can perform a large number of injection molding at the same time, and can repair or repair a single mold unit when one of the mold units is damaged or Replace without affecting the process of other mold units.

In order to explain the present invention more clearly, the preferred embodiments are described in detail below with reference to the drawings. Please refer to FIGS. 1 and 2. FIG. 1 is a schematic diagram of a mold unit 1 according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional schematic diagram of the mold unit 1 of FIG. 1. As shown in FIG. 1, the mold unit 1 has a feed pipe 10, at least one mold core 12, and at least one output member 14, wherein at least one mold core 12 can be arranged around the feed pipe 10, and the output member 14 can be provided The die 12 can be connected to the feeding pipe 10. On the other hand, the mold unit 1 further has a fixing member 16 that can be used to fix the feed pipe 10 and the mold core 12 to assemble the feed pipe 10 and the mold core 12 located around the feed pipe 10 into the mold unit 1.

As shown in FIG. 2, the feed pipe 10 has a runner 100 and at least one output port 102 communicating with the runner 100. The runner 100 can receive and transfer molten plastic outside the mold unit 1. In this embodiment, the runner 100 can receive plastic from the bottom and transfer it to the entire runner 100. Then, the plastic can pass through at least one outlet 102 The communication runner 100 is output to the output member 14 to the outside. On the other hand, each mold core 12 has a mold cavity 120 and an injection port 122 communicating with the mold cavity 120. The injection port 122 can be used to receive plastic from the outside of the mold core 12 and inject the received plastic into the mold core 12之模穴120. The output member 14 may be disposed on the output port 102 of the feed pipe 10 and connected to the corresponding injection port 122 of the mold core 12, thereby connecting the output port 102 and the injection port 122, and further connecting the runner 100 and the mold cavity 120. With the output member 14, the plastic in the runner 100 can be injected into the cavity 120 for the injection molding process. Please note that for the sake of brevity in the drawing, the mold core 12 on the right is omitted in FIG.

The number of output ports 102 of the feeding pipe 10 and the set positions can be designed in accordance with the number of mold cores 12. In this specific embodiment, one feeding tube 10 can surround four mold cores 12. Therefore, four output ports 102 can be provided on the feeding tube 10 to correspond to the surrounding injection ports 122 of the four mold cores 12. However, in practice, the number of mold cores and corresponding output ports may also be 2, 3, 5 or more, which is not limited by the present invention. Each output port 102 can be connected to an output member 14, and each output member 14 can be connected to the corresponding injection port 122 of the mold core 12. Therefore, one mold unit 1 can supply plastic to multiple mold cavities 120, so multiple injection molding processes can be performed at the same time to manufacture multiple products at once.

The injection port 122 is located on the side of the mold core 12 and communicates with the mold cavity 120 from the side, and the output port 102 is positioned on the side of the conveying pipe 10 and can communicate with the runner 100 from the side. This design allows the output member 14 and each mold core 12 Assembly is easier.

In this specific embodiment, the mold core 12 may further include a first mold core 124, a second mold core 126, and a third mold core 128, wherein an injection port 122 is formed on the first mold core 124. The first mold core 124 and the second mold core 126 are connected to each other to form a mold cavity 120, and the third mold core 128 is inserted into the mold cavity 120 to limit the shape of the mold cavity 120. Through the first mold core 124, the second mold core 126, and the third mold core 128, when the plastic enters the mold cavity 120 from the delivery tube 10 through the output port 102 through the output member 14, a thin shape like a syringe can be formed Tubular structure. The above-mentioned mold core 12 is formed by combining three sub mold cores, but the invention is not limited to this. For example, if a plastic product with other shapes or structures is to be produced, the mold core can be based on the actual mold cavity The shape is designed. In other words, any mold core that can form a mold cavity and form an injection port on the side of the mold cavity that communicates with the mold cavity is an available option. Moreover, different output ports of the feed pipe in the mold unit can be connected to mold cores with different mold cavities. When the mold unit is used for injection molding, plastic products with different shapes can be produced at the same time.

When one of the mold cores 12 or the first mold core 124, the second mold core 126, or the third mold core 128 in the mold unit 1 is damaged and the mold cavity 120 is deformed, only the damaged mold The kernel 12 is removed for repair or replacement, and it is not necessary to replace all mold kernels 12. As a result, the mold unit of the present invention is easier to use and maintain than the larger molds in the conventional technology, and has a lower cost.

If a mold core 12 is damaged, it is temporarily unable to be replaced and removed for maintenance. At this time, the mold unit 1 to which the mold core 12 belongs can be stopped from supplying plastic to the runner 100 of its conveying pipe 10 to avoid the plastic from corresponding The output port 122 of the damaged mold core 12 and the output member 14 are discharged to the outside. On the other hand, if the damaged mold core 12 is removed and the output member 14 corresponding to the damaged mold core 12 is replaced with a closure to close the output port 102, the plastic will not escape from the output port 102 to the outside. The feed pipe 10 and other mold cores 12 of the mold unit 1 can still perform the injection molding process normally.

In this specific embodiment, the output member 14 is a valve port that protrudes outwards. Therefore, when the feeding pipe 10 conveys (or calls in) material, the output member 14 will be stably received by the input pipe 10 Resist the injection port 122 and communicate with the injection port 122, so that the material can be efficiently transported to inject the plastic into the cavity 120; in addition, when the feeding tube 10 stops feeding, the output member 14 will stop feeding or Keeping warm at the injection port 122 to prevent material from leaking out. In summary, the mold unit of the present invention can be connected to a plurality of mold cores through a separable runner and mold cavity design to provide plastic to the mold cavity of each mold core and simultaneously perform multiple injection molding processes. When one of the mold cores is damaged, only the mold core can be repaired or replaced without replacing all mold cores or mold units, which makes the mold unit very convenient in production, use or maintenance, and has a low cost.

The mold unit in the foregoing specific embodiments can further form a modular mold, and thus a large number of injection molding processes can be simultaneously performed. Please refer to FIG. 3, which is a schematic diagram of a modular mold 2 according to another embodiment of the present invention. As shown in FIG. 3, the modular mold 2 includes a combination of multiple mold units 20. In practice, the modular mold 2 can be used for a large number of injection molding processes to complete a large number of plastic products at the same time.

In this specific embodiment, the plurality of mold units 20 in the modular mold 2 can be combined with each other to form the modular mold 2. In detail, one or several module units 20 can be built on one substrate 22, and a plurality of substrates 22 together with the mold unit 20 on them can be combined with each other to form a modular mold 2, but this is not used in practice limit. In another specific embodiment, all the mold units can also be arranged on the same substrate and connected to each other to form a modular mold.

In this specific embodiment, one mold unit 20 includes a feed pipe 200, at least one mold core 202, at least one output member 204, and a fixing member 206, wherein at least one mold core 202 may be arranged around the feed pipe 10, the output member 204 can be arranged on the feeding pipe 200 and can be connected to the mold core 202, and the fixing member 206 is used to connect and fix the mold core 202. In this specific embodiment, each component in the mold unit 20 is substantially the same as the corresponding component in the foregoing specific embodiment, that is, the feed pipe 200 has a runner (not shown) and corresponds to at least one mold core 202 At least one output port 2002, and the output members 204 are respectively disposed on the output port 2002 and can be connected to the injection port 2022 of the mold core 202, and the mold core 202 has a mold cavity (not shown) communicating with the injection port 2022. Therefore, each mold unit 20 can communicate with the runner of the feeding pipe 200 and the mold cavity of each mold core 202 through the output member 204 to perform the injection molding process.

Please note that although the modular mold 2 in this embodiment is composed of 8 mold units 20, the present invention is not limited to this, the user or designer can adjust the number of mold units 20 combined with each other according to their needs, Furthermore, the size of the modular mold 2 is extended or adjusted to achieve a smaller or larger injection molding process at the same time. In addition, as described in the previous specific embodiment, the number of mold cores 202 in a single mold unit 20 can be determined according to needs, and is not limited to the four mold cores 202 in this specific embodiment, thereby further controlling the simultaneous injection molding The number of mold cores in the process. On the other hand, each mold unit 20 can use mold cores 202 having different mold cavities, so that plastic products with different shapes can be manufactured in large quantities at the same time.

When one of the mold cores 202 of the modular mold 2 is damaged and the mold cavity is deformed or fails, the mold core 202 can be separately removed for repair or replacement, while the other mold cores 202 can still normally perform the injection process. In addition, if the feed pipe 200 of one of the mold units 20 is damaged, the supply of plastic to the feed pipe 200 can be stopped, and the other mold units 20 can still perform the injection process normally. In this specific embodiment, since each mold core 202 is detachably connected to other mold cores 202 and the feeding pipe 200, no complicated or difficult technology is required in manufacturing, and the manufacturing cost is low.

It can be seen from the various specific embodiments described above that the modular mold of the present invention is composed of multiple mold units, and the mold unit can use multiple mold cores with a single cavity and separate sprue design to achieve easy production , Use and maintenance and lower cost.

The above is only the preferred and feasible embodiments of the present invention, and any equivalent changes in applying the description of the present invention and the scope of patent application should be included in the patent scope of the present invention.

[The present invention] 1, 20 ‧ ‧ ‧ mold unit 2 ‧ ‧ ‧ modular mold 10, 200 ‧ ‧ ‧ feed pipe 12, 202 ‧ ‧ ‧ mold kernel 14, 204 ‧ ‧ ‧ output 16, 206 ‧ ‧ ‧Fixed member 100 ‧‧‧ Sprue 102, 2002 ‧‧‧ Outlet 120 ‧‧‧ Mold cavity 122, 2022 ‧‧‧ Injection port 124 ‧‧‧ First mold core 126‧‧‧ Second mold core 128‧‧ ‧The third mold

FIG. 1 is a schematic diagram of a mold unit according to an embodiment of the invention. FIG. 2 is a schematic partial cross-sectional view of the mold unit of FIG. 1. 3 is a schematic diagram of a modular mold according to another embodiment of the invention.

2‧‧‧Modular mold

20‧‧‧Mould unit

22‧‧‧ substrate

200‧‧‧Feeding pipe

202‧‧‧ Mo Ren

204‧‧‧ Output

206‧‧‧Fixed member

2002‧‧‧Output

2022‧‧‧Injection port

Claims (8)

A mold unit includes: a feed pipe having a sprue and at least one output port connected to the sprue, the sprue is used to transfer a plastic, and the at least one output port is used to output the plastic in the sprue At least one mold core, having a mold cavity and an injection port connected to the mold cavity, the injection port is used to receive the plastic and inject the plastic into the mold cavity; and at least one output member is provided on the at least one output And connect the injection port of the at least one mold core to connect the at least one output port and the injection port of the at least one mold core, the at least one output member is used to output the plastic in the runner to the at least one mold In the mold cavity of Renzhi. The mold unit according to claim 1, wherein the at least one mold core is arranged around the feed pipe. The mold unit according to claim 2, further comprising a fixing member for connecting and fixing the at least one mold core. The mold unit according to claim 1, wherein the injection port is located on a side of the mold core, and the injection port communicates with the mold cavity from the side. A modular mold includes: a plurality of mold units, the mold units can be combined with each other, each of the mold units further includes: a feed pipe, having a runner and at least one outlet connected to the runner, The runner is used to transmit a plastic, and the at least one output port is used to output the plastic in the runner; at least one mold core has a mold cavity and an injection port connecting the mold cavity, the injection port is used to Receiving the plastic and injecting the plastic into the mold cavity; and at least one output member disposed at the at least one output port and connected to the injection port of the at least one mold core to communicate the at least one output port and the at least one mold core At the injection port, the at least one output member is used to output the plastic in the runner to the cavity of the at least one mold core. The modular mold according to claim 5, wherein the at least one mold core of each of the molds is arranged around the feed pipe. The modular mold according to claim 6, wherein each of the mold units further includes a fixing member for connecting and fixing the at least one mold core. The modular mold according to claim 5, wherein the injection port is located on a side of the mold core, and the injection port communicates with the mold cavity from the side.

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