Multi-cavity injection mold

Abstract

The utility model discloses a multi-cavity injection mold which comprises a first mold base mechanism and a second mold base mechanism arranged on the lower side of the first mold base mechanism, mold opening and closing can be achieved between the two mold base mechanisms, the first mold base mechanism is provided with a first mold plate, the first mold plate is provided with a first mold core, and the second mold base mechanism is provided with a second mold plate and a base mold plate located on the lower side of the second mold plate. The first mold plate is provided with a first mold core, the second mold plate is provided with a second mold core, inserts penetrating through the second mold plate and the second mold core are fixedly arranged on the base mold plate, during mold closing, a plurality of cavities are defined between the first mold core and the second mold core, the inserts correspond to the cavities, the upper portions of the inserts can stretch out of the second mold core and stretch into the cavities, and a connecting piece is arranged on the lower side of the second mold plate. The connecting piece penetrates through the base template, is used for being connected with a push-pull rod of the injection molding machine and can drive the second template to move, so that the second mold core pushes an injection molding finished product at the upper part of the insert. By adopting the structure, the structure of the mold is simplified, and the size of the mold and the production cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a multi-cavity injection mold. Background Technology

[0002] Existing injection molds typically employ ejection mechanisms to demold the molded product. These mechanisms usually consist of a movable top plate on the mold base, connected to a push-pull rod of the injection molding machine. The push-pull rod drives the top plate, which contains ejector pins or ejector rods. As the top plate moves, it actuates these pins or rods, pushing the molded product from the mold core insert and completing the demolding process. However, for multi-cavity injection molds, this ejection mechanism requires a corresponding ejector pin or rod for each cavity. This not only increases the complexity and size of the mold structure but also raises production costs, making it inconvenient for production applications. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a multi-cavity injection mold that can use the injection-molded finished product on the second mold core ejector insert for demolding, reducing the need for components such as top plates and ejector pins, simplifying the mold structure, reducing mold volume and production costs, and facilitating production applications.

[0004] According to an embodiment of the present invention, a multi-cavity injection mold includes a first mold base mechanism and a second mold base mechanism. The first mold base mechanism has a first template and a first mold core. The second mold base mechanism is located below the first mold base mechanism and can be closed or opened with the first mold base mechanism. The second mold base mechanism has a second template and a base template located below the second template. The second template has a second mold core. An insert is fixedly provided on the base template. The insert passes through the second template and the second mold core and can extend above the second mold core. When the first mold base mechanism and the second mold base mechanism are closed, multiple cavities are defined between the first mold core and the second mold core. Multiple inserts are provided corresponding to the cavities, and the upper part of the insert can extend into the cavity. A connector is provided on the lower side of the second template. The connector passes through the base template and is used to connect with the push-pull rod of the injection molding machine, which can drive the second template to move relative to the base template, so that the second mold core pushes the injection molded product above the insert.

[0005] The multi-cavity injection mold according to the embodiments of this utility model has at least the following beneficial effects: In use, the first mold base mechanism and the second mold base mechanism move up and down relative to each other to achieve mold closing and opening; during mold closing, multiple cavities are defined between the first mold core and the second mold core, and the upper part of each insert extends into the corresponding cavity; after injection molding, the injection molded product is formed on the upper part of the insert, and the first mold base mechanism and the second mold base mechanism move relative to each other to open the mold, separating the first mold plate and the second mold plate, and separating the first mold core and the second mold core. Subsequently, the push-pull rod of the injection molding machine drives the second mold plate to move upward relative to the base mold plate through the connecting piece, causing relative movement between the second mold core and the insert, and causing the second mold core to push the injection molded product on the upper part of the insert upward, thereby separating the injection molded product from the insert and achieving demolding. By adopting the above structure, the setting of components such as top plates and ejector pins is reduced, the mold structure is simplified, the mold volume is reduced, production costs are lowered, and production applications are facilitated.

[0006] According to some embodiments of the present invention, a pressure plate is fixedly connected to the upper side of the base template, and a first protrusion is provided on the lower side of the insert. The insert passes through the pressure plate and the first protrusion is clamped and fixed between the pressure plate and the base template.

[0007] According to some embodiments of the present invention, a snap-fit ​​component is fixedly provided on the base template. The snap-fit ​​component passes through the second template and the second mold core and can extend out of the upper side of the second mold core. When the first mold base mechanism and the second mold base mechanism are closed, a pouring channel is defined between the first mold core and the second mold core. The upper part of the snap-fit ​​component can extend into the pouring channel and snap-fit ​​with the solidified material in the pouring channel.

[0008] According to some embodiments of the present invention, the upper and lower sides of the connector are provided with first threaded holes, and the lower side of the second template is provided with a threaded component, which is threadedly engaged with the first threaded hole on the upper side of the connector.

[0009] According to some embodiments of the present invention, a guide block is fixedly connected to the side of the second template, and the base template is provided with a guide groove for the guide block to be inserted.

[0010] According to some embodiments of the present invention, a guide block is fixedly connected to the side of the second template, and the first template is provided with a guide groove for the guide block to be inserted.

[0011] According to some embodiments of the present invention, a detachable pad is provided on the groove wall of the guide groove, and the pad is in contact with the guide block.

[0012] According to some embodiments of the present invention, the second template is connected to a limiting member, which is used to limit the movement stroke of the second template relative to the base template.

[0013] According to some embodiments of this utility model, the limiting member is a bolt, the base template is provided with a limiting hole, the limiting hole is provided with a limiting step, the upper part of the limiting member passes through the limiting hole and is threadedly connected to the second template, and the lower part of the limiting member can move with the second template to abut against the limiting step.

[0014] According to some embodiments of the present invention, a sequential mold opening mechanism is provided between the first template, the second template and the base template, the sequential mold opening mechanism enabling the second template to move relative to the first template and the base template in a sequential order.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the multi-cavity injection mold according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure of a multi-cavity injection mold;

[0019] Figure 3 for Figure 1 A partial structural diagram of a multi-cavity injection mold;

[0020] Figure 4 for Figure 3 One of the schematic diagrams of the cross-sectional structure of a multi-cavity injection mold;

[0021] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of a multi-cavity injection mold (Part 2);

[0022] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of a multi-cavity injection mold in another state.

[0023] Figure label:

[0024] 10 injection-molded finished products, 20 solidified materials;

[0025] The first mold base mechanism 100, the cavity 101, the pouring channel 102, the guide groove 103, the first template 110, the first mold core 111, and the pad block 112;

[0026] Second mold base mechanism 200, first threaded hole 201, second threaded hole 202, third threaded hole 203, limiting hole 204, second template 210, second mold core 211, connector 212, threaded part 213, guide block 214, limiting part 215, base template 220, pressure plate 221, limiting step 222, insert 230, first boss 231, snap-fit ​​part 240, second boss 241;

[0027] Sequential mold opening mechanism 300. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, if words such as several, greater than, less than, exceeding, above, below, or within appear, several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to exclude the number itself, and above, below, or within are understood to include the number itself.

[0031] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A multi-cavity injection mold includes a first mold base mechanism 100 and a second mold base mechanism 200. The first mold base mechanism 100 has a first template 110 with a first mold core 111 on it. The second mold base mechanism 200 is located below the first mold base mechanism 100 and can be closed or opened with the first mold base mechanism 100. The second mold base mechanism 200 has a second template 210 and a base template 220 located below the second template 210. The second template 210 has a second mold core 211 on it. An insert 230 is fixedly disposed on the base template 220, and the insert 230 passes through the second template 210 and the first mold core 111. The second mold core 211 can extend out of the upper side of the second mold core 211. When the first mold base mechanism 100 and the second mold base mechanism 200 are closed, multiple cavities 101 are defined between the first mold core 111 and the second mold core 211. Multiple inserts 230 are provided corresponding to the cavities 101, and the upper part of the inserts 230 can extend into the cavities 101. The lower side of the second mold plate 210 is provided with a connector 212. The connector 212 passes through the base mold plate 220 and is used to connect with the push-pull rod of the injection molding machine. It can drive the second mold plate 210 to move relative to the base mold plate 220, so that the second mold core 211 pushes the injection molded product 10 on the upper part of the insert 230.

[0034] Understandably, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the second mold base mechanism 200 is located below the first mold base mechanism 100. Multiple cavities 101 can be defined between the first mold core 111 and the second mold core 211. The multiple cavities 101 are arranged in an array. Multiple inserts 230 are provided for the cavities 101 and are all fixedly installed on the base template 220. The inserts 230 pass through the second template 210 and the second mold core 211 and can extend out of the upper side of the second mold core 211. In use, the first mold base mechanism 100 and the second mold base mechanism 200 move up and down relative to each other to achieve mold closing and mold opening. When the mold is closed, the upper part of each insert 230 extends into the corresponding cavity 101. After injection molding, the injection molded product 10 is formed on the upper part of the insert 230. The first mold base mechanism 100 and the second mold base mechanism 200 move relative to each other to open the mold, so that the first mold plate 110 and the second mold plate 210 are separated, and the first mold core 111 and the second mold core 211 are separated. Subsequently, the push-pull rod of the injection molding machine drives the second mold plate 210 to move upward relative to the base mold plate 220 through the connecting piece 212, so that the second mold core 211 and the insert 230 move relative to each other, so that the second mold core 211 pushes the injection molded product 10 on the upper part of the insert 230 upward, thereby separating the injection molded product 10 from the insert 230 and realizing demolding. By adopting the above structure, the number of components such as top plates and ejector pins is reduced, simplifying the mold structure, which helps to reduce the size of the mold and lower production costs, making it easier to apply in production.

[0035] In practical applications, the specific number of cavities 101 and inserts 230, as well as the specific structure of the upper part of inserts 230, can be set according to actual usage needs.

[0036] In some embodiments, a pressure plate 221 is fixedly connected to the upper side of the base template 220, and a first boss 231 is provided on the lower side of the insert 230. The insert 230 passes through the pressure plate 221 and the first boss 231 is clamped and fixed between the pressure plate 221 and the base template 220.

[0037] Understandably, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the pressure plate 221 is fixedly connected to the upper side of the base template 220 and located on the lower side of the second template 210. Each insert 230 has a first boss 231 on its lower side. Each insert 230 passes through the pressure plate 221, and its lower first boss 231 is clamped and fixed between the pressure plate 221 and the base template 220, thereby realizing the installation and fixation of multiple inserts 230. The structure is simple and easy to assemble and use. In practical applications, in addition to the above structure, the inserts 230 can also be directly connected and fixed to the base template 220 by snap-fit ​​or threaded structure, which can be set according to the actual use needs.

[0038] In some embodiments, a snap-fit ​​member 240 is fixedly provided on the base template 220. The snap-fit ​​member 240 passes through the second template 210 and the second mold core 211 and can extend out of the upper side of the second mold core 211. When the first mold base mechanism 100 and the second mold base mechanism 200 are closed, a pouring channel 102 is defined between the first mold core 111 and the second mold core 211. The upper part of the snap-fit ​​member 240 can extend into the pouring channel 102 and snap-fit ​​with the solidified material 20 in the pouring channel 102.

[0039] Understandably, such as Figure 2 and Figure 3As shown, the snap-fit ​​component 240 has a second protrusion 241 on its lower side. The snap-fit ​​component 240 passes through the pressure plate 221, and its lower side second protrusion 241 is clamped and fixed between the pressure plate 221 and the base template 220, thereby realizing the installation and fixation of the snap-fit ​​component 240. The snap-fit ​​component 240 passes through the second template 210 and the second mold core 211, and its upper part can extend out of the upper side of the second mold core 211. When the first mold base mechanism 100 and the second mold base mechanism 200 are closed, the first mold core 111 and the second mold core 211 define a gating channel 102, and the upper part of the snap-fit ​​component 240 can extend into the gating channel 102. After injection molding is completed, the fluid material in the gating channel 102 condenses to form solidified material 20 and reacts with the upper part of the snap-fit ​​component 240. When the first mold base mechanism 100 and the second mold base mechanism 200 open the mold, the first mold core 111 and the second mold core 211 separate. Due to the engagement of the snap-fit ​​component 240 with the solidified material 20, the solidified material 20 can detach from the first mold core 111. During subsequent demolding operations, the upward movement of the second mold core 211 pushes the injection molded product 10 and the solidified material 20 upward together, causing the solidified material 20 to separate from the snap-fit ​​component 240, thereby achieving demolding of the solidified material 20 and facilitating its use. In practical applications, the specific structure and connection method of the snap-fit ​​component 240 can be set according to actual usage needs and are not limited here.

[0040] In some embodiments, the connector 212 is provided with a first threaded hole 201 on both the upper and lower sides, and the second template 210 is provided with a threaded part 213 on the lower side, the threaded part 213 being threadedly engaged with the first threaded hole 201 on the upper side of the connector 212.

[0041] Understandably, such as Figure 4 As shown, the connector 212 has a first threaded hole 201 on both its upper and lower sides, and the second template 210 has a second threaded hole 202 on its lower side. The upper end of the threaded component 213 is threaded into the second threaded hole 202, and its lower end is threaded into the first threaded hole 201 on the upper side of the connector 212, thus assembling the connector 212. In use, the first threaded hole 201 on the lower side of the connector 212 is threaded into the push-pull rod of the injection molding machine, so that the push-pull rod drives the second template 210 to move through the connector 212. The above connection structure is simple and reasonable, and convenient for assembly, disassembly and use. In practical applications, the specific connection method of the connector 212 can also be changed according to actual usage needs.

[0042] In some embodiments, a guide block 214 is fixedly connected to the side of the second template 210, and a guide groove 103 is provided on the base template 220 for the guide block 214 to be inserted.

[0043] Understandably, such as Figure 1 , Figure 3 and Figure 4As shown, guide blocks 214 are fixedly connected to the left, right, and front sides of the second template 210, and guide grooves 103 are provided on the left, right, and front sides of the base template 220. The guide blocks 214 of the second template 210 are inserted into the guide grooves 103 of the base template 220. The cooperation of the two limits and guides the relative vertical movement between the second template 210 and the base template 220, which helps to improve the stability and reliability of the movement and facilitates use. In practical applications, the number and distribution of guide blocks 214 and guide grooves 103 can be set according to actual usage needs.

[0044] In some embodiments, a guide block 214 is fixedly connected to the side of the second template 210, and the first template 110 is provided with a guide groove 103 for the guide block 214 to be inserted.

[0045] Understandably, such as Figure 1 , Figure 3 and Figure 4 As shown, both the first template 110 and the base template 220 are provided with guide grooves 103. The upper and lower ends of the guide block 214 on the side of the second template 210 are respectively inserted into the guide grooves 103 on the first template 110 and the base template 220. This allows the same guide block 214 to limit and guide the relative vertical movement between the first template 110 and the second template 210, as well as between the second template 210 and the base template 220, thereby improving the stability and reliability of the movement. The structure is simple and easy to use. In practical applications, in addition to the above structure, two types of guide blocks 214 can be provided on the second template 210 to cooperate with the guide grooves 103 on the first template 110 and the base template 220 respectively for limiting and guiding. The specific configuration can be determined according to actual usage needs.

[0046] In some embodiments, a removable pad 112 is provided on the wall of the guide groove 103, and the pad 112 contacts and engages with the guide block 214.

[0047] Understandably, such as Figure 1 and Figure 3 As shown, the pad 112 is detachably connected to the wall of the guide groove 103. When the guide block 214 is inserted into the guide groove 103, it contacts and engages with the pad 112. During use, different pads 112 can be replaced as needed. On one hand, the pad 112 can compensate for the gap between the guide block 214 and the wall of the guide groove 103, achieving a better limiting and guiding effect. On the other hand, after prolonged use and wear, the pad 112 can be replaced with a new one, improving durability. In practical applications, the pad 112 can be detachably connected to the wall of the guide groove 103 via a threaded structure or via a snap-fit ​​structure, depending on the specific application requirements.

[0048] In some embodiments, the second template 210 is connected to a limiting member 215, which is used to limit the movement stroke of the second template 210 relative to the base template 220.

[0049] Understandably, such as Figure 5 and Figure 6 As shown, by setting the limiting member 215 to restrict the movement stroke of the second template 210 relative to the base template 220, it is beneficial to ensure the reliability of the movement of the second template 210 relative to the base template 220 and facilitates use. In actual application, the specific structure of the limiting member 215 can be set according to the actual use needs, and will not be described in detail here, but will be explained in detail below.

[0050] In some embodiments, the limiting member 215 is a bolt, the base template 220 is provided with a limiting hole 204, the limiting hole 204 is provided with a limiting step 222, the upper part of the limiting member 215 passes through the limiting hole 204 and is threadedly connected to the second template 210, and the lower part of the limiting member 215 can move with the second template 210 to abut against the limiting step 222.

[0051] Understandably, such as Figure 5 and Figure 6 As shown, the base template 220 has a vertically penetrating limiting hole 204, within which a limiting step 222 is provided. The lower side of the second template 210 has a third threaded hole 203. The limiting member 215 is a bolt, the upper part of which passes through the limiting hole 204 and is threadedly engaged with the third threaded hole 203 of the second template 210. The lower part can move with the second template 210 to abut against the limiting step 222, thereby limiting the movement stroke of the second template 210. Its structure is simple, and in use, the upper and lower positions of the limiting member 215 can be adjusted by screwing the threaded structure, thus adjusting the limitation on the movement stroke of the second template 210, making it convenient to use. In practical applications, in addition to the above structure, a strip-shaped hole can be provided on the limiting member 215, and a limiting part located at the strip-shaped hole can be provided on the base template 220 to limit the movement stroke of the second template 210. The specific structure can be changed according to actual usage needs.

[0052] In some embodiments, a sequential mold opening mechanism 300 is provided between the first template 110, the second template 210 and the base template 220. The sequential mold opening mechanism 300 enables the second template 210 to move relative to the first template 110 and the base template 220 in a sequential order.

[0053] Understandably, such as Figure 1 and Figure 3As shown, by setting the sequential mold opening mechanism 300, the second template 210 can move and separate relative to the first template 110 during mold opening, and then move and separate relative to the base template 220 during subsequent demolding. This ensures the sequential relative movement order among the three templates, which is beneficial to improving the reliability of mold opening and demolding operations and facilitating use. In practical applications, the specific structure of the sequential mold opening mechanism 300 can be set according to actual usage needs. Since the specific structure and principle of the sequential mold opening mechanism 300 of this utility model embodiment are known to those skilled in the art, they will not be described in detail here.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-cavity injection mold characterized by, The utility model relates to a first mould base mechanism, first mould base mechanism have first mould plate, first mould plate is equipped with first mould core on, Second mould base mechanism is equipped with in the downside of first mould base mechanism and can be closed or opened with first mould base mechanism, second mould base mechanism have second mould plate and the base mould plate in the downside of second mould plate, second mould plate is equipped with second mould core on, the inlay is fixedly arranged on the base mould plate, the inlay passes second mould plate and second mould core and can protrude on the upside of second mould core, when first mould base mechanism and second mould base mechanism are closed, a plurality of cavitys are defined between first mould core and second mould core, the inlay is equipped with a plurality of and the upper portion of inlay can be inserted into the cavity corresponding to the cavity, the downside of second mould plate is equipped with connecting piece, connecting piece passes base mould plate and is used for connecting with the push-pull rod of injection molding machine, can drive second mould plate moves relative to base mould plate, makes second mould core pushes the injection molding product of inlay upper portion. The upper side of the base mold plate is fixedly connected with a pressing plate, the lower side of the insert is provided with a first boss, the insert passes through the pressing plate, and the first boss is clamped and fixed between the pressing plate and the base mold plate.

2. The multi-cavity injection mold of claim 1, wherein, The base mold plate is fixedly provided with a clamping piece, the clamping piece passes through the second mold plate and the second mold core and can protrude on the upper side of the second mold core, when the first mold base mechanism and the second mold base mechanism are closed, a pouring channel is defined between the first mold core and the second mold core, the upper part of the clamping piece can be inserted into the pouring channel and clamped with the condensed material in the pouring channel.

3. The multi-cavity injection mold of claim 1, wherein, The upper side and the lower side of the connecting piece are provided with first threaded holes, the lower side of the second mold plate is provided with a threaded piece, and the threaded piece is screwed with the first threaded hole on the upper side of the connecting piece.

4. The multi-cavity injection mold of claim 1, wherein, The side of the second mold plate is fixedly connected with a guide block, and the base mold plate is correspondingly provided with a guide groove for inserting the guide block.

5. The multi-cavity injection mold of claim 1, wherein, The side of the second mold plate is fixedly connected with a guide block, and the first mold plate is correspondingly provided with a guide groove for inserting the guide block.

6. The multi-cavity injection mold of claim 1, wherein, The groove wall of the guide groove is provided with a detachable pad, and the pad is in contact with the guide block.

7. The multi-cavity injection mold according to claim 5 or 6, characterized in that The second mold plate is connected with a limiting piece, and the limiting piece is used for limiting the movement stroke of the second mold plate relative to the base mold plate.

8. The multi-cavity injection mold of claim 1, wherein, The limiting piece is a bolt, the base mold plate is provided with a limiting hole, the limiting hole is provided with a limiting step, the upper part of the limiting piece passes through the limiting hole and is screwed with the second mold plate, and the lower part of the limiting piece can move to abut against the limiting step with the second mold plate.

9. The multi-cavity injection mold of claim 8, wherein, A sequential mold opening mechanism is arranged between the first mold plate, the second mold plate and the base mold plate, and the sequential mold opening mechanism can make the second mold plate move relative to the first mold plate and the base mold plate in a sequential order.

10. The multi-cavity injection mold of claim 1, wherein, ​

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