Universal injection mold for industrial plug shell production

Abstract

The utility model discloses a general injection mould for industrial plug shell production, which comprises a bottom mould, a middle mould, an upper mould and forming side moulds, two ends of one side, close to the upper mould, of the middle mould are connected with side mould guide pieces, a side mould travel path channel is formed between the side mould guide pieces, and the forming side moulds are movably connected in the side mould travel path channel. A mold core positioning seat is connected to the middle of the middle mold, an inner mold core and an insert are connected to the mold core positioning seat, a containing cavity is formed in the side, close to the forming side mold, of the upper mold, an upper mold core is connected into the containing cavity, the upper mold core is right opposite to the inner mold core, and the forming side mold, the mold core positioning seat, the inner mold core and the upper mold core form an injection molding cavity. According to the universal injection mold, universal production of industrial plug shells with the same inner diameter and different protection grades can be achieved only by replacing the corresponding forming side mold, the storage and management burden of a large number of special molds is reduced, and therefore the input cost of the special molds is reduced, and meanwhile the mold research and development period and cost of new products are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial plug shell production technology, specifically to a general injection mold for the production of industrial plug shells. Background Technology

[0002] As a connection device designed for harsh industrial environments, one of the core characteristics of industrial plugs is that they have a protection level far higher than that of civilian products. This level is usually represented by IP codes, such as IP44 (splash-proof) and IP67 (short-term immersion-proof). The level of protection directly determines the application scenarios and safety of industrial plugs.

[0003] To achieve different protection levels, the connection structures of industrial plug housings differ in design, especially in the threaded connection methods between the housings: for industrial plugs requiring IP67 or higher, the threaded connection of the housing usually has a sealing ring or a positioning structure that engages with a snap ring; for industrial plugs with IP44 rating, the threaded connection of the housing may only have shallow threads or a snap-fit ​​auxiliary structure, the main purpose of which is to achieve basic mechanical locking and splash protection, with relatively lower requirements for sealing performance.

[0004] Currently, the industry generally adopts a "one shell, one mold" production method for industrial plug shells. This means that each industrial plug shell of different models and protection levels requires the development of a complete set of dedicated injection molds. This production model has the following drawbacks: high mold costs, requiring the manufacture of entirely new mold sets, leading to a sharp increase in R&D and manufacturing costs; and insufficient production line flexibility, where molds are easily left idle when the demand for a product changes, resulting in resource waste.

[0005] In view of this, there is an urgent need to design a universal injection mold for the production of industrial plug shells in order to solve the technical defects in the production of the aforementioned industrial plugs. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a universal injection mold for the production of industrial plug shells, comprising a bottom mold, a middle mold, and an upper mold arranged sequentially, and further comprising a forming side mold. Side mold guides are connected to both ends of the middle mold near the upper mold, forming a side mold travel channel between the side mold guides. The forming side molds are movably connected within the side mold travel channel. A mold core positioning seat is connected to the middle of the middle mold, and an inner mold core and an insert are connected to the mold core positioning seat. A receiving cavity is opened on the side of the upper mold near the forming side mold, and an upper mold core is connected within the receiving cavity, with the upper mold core directly opposite the inner mold core. The forming side mold, the mold core positioning seat, the inner mold core, and the upper mold core constitute an injection cavity. An injection tube is connected to the upper mold core, and an injection channel communicating with the injection tube is opened on the upper mold core and / or the inner mold core. The injection channel is connected to the injection cavity.

[0007] In one possible implementation, two forming side dies are provided, which are arranged facing each other. Each forming side die includes a side die body, and the two sides of the side die body are provided with limiting edges. The side die guide is provided with a limiting groove on the side near the side die travel channel, and the limiting edge is connected in the limiting groove.

[0008] In one possible implementation, a molding cavity is provided on the inner side of the side mold body, and a notch communicating with the molding cavity is provided on the top surface of the side mold body. When two side mold bodies are fitted together, the two notches are joined to form a groove, which is directly opposite the upper mold core, and the receiving cavity is adapted to the side mold body.

[0009] In one possible implementation, a side mold transfer plate is provided on the outer side of the side mold body, and a movable seat is connected to the side mold transfer plate.

[0010] In one possible implementation, the inner sides of the two forming side molds are respectively provided with locking grooves and locking blocks, and when the two side mold bodies are fitted together, the locking grooves and the locking blocks are engaged with each other.

[0011] In one possible implementation, a gap is provided between the insert and the inner mold core, and the end face of the insert is in contact with the inner wall of the molding cavity.

[0012] In one possible implementation, the sidewall of the bottom mold is provided with a first water inlet and a first water outlet, and the interior of the inner mold core is provided with a mold core cavity, wherein the first water inlet and the first water outlet are both connected to the mold core cavity.

[0013] In one possible implementation, the side wall of the intermediate mold is provided with a second water inlet and a second water outlet, and the interior of the mold core positioning seat is provided with a liquid cooling circuit, wherein the second water inlet and the second water outlet are both connected to the liquid cooling circuit.

[0014] In one possible implementation, an insert is connected to one side of the mold guide, and the molding mold has an insert groove adapted to the insert.

[0015] In one possible implementation, the bottom mold and the middle mold are fixedly connected, a positioning post is connected to the side mold guide, a sleeve groove is provided on the outer periphery of the upper mold, a sleeve is connected in the sleeve groove, and the sleeve is arranged opposite to the positioning post.

[0016] The method of using the universal injection mold for the production of industrial plug shells in this technical solution is as follows: industrial plug shells with the same inner diameter can use the same mold set, only the molding side mold needs to be replaced. The target molding side mold is connected in the side mold travel channel. The molding side mold is moved towards the inner mold core by the control of an external power source so that the molding side molds are spliced ​​together. Then, the upper mold is moved towards the molding side mold by the control of an external power source so that the upper mold core and the inner mold core are aligned and fitted to form an injection cavity. Molten plastic or colloid is injected into the injection tube to fill the entire injection cavity. After cooling, the required industrial plug shell can be obtained.

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This technical solution uses a universal injection mold for the production of industrial plug shells. The bottom mold, middle mold, upper mold, mold core positioning seat, inner mold core, and upper mold core are designed as a universal platform. When it is necessary to produce industrial plug shells with different shapes but the same inner diameter, it is not necessary to change the entire mold set. Only the corresponding forming side mold needs to be replaced. It can realize the universal production of industrial plug shells with the same inner diameter but different protection levels, reducing the storage and management burden of a large number of special molds, thereby reducing the investment cost of special molds. At the same time, the mold development cycle and cost of new products are also greatly reduced. Manufacturers can meet the customized market demand in a low-cost and high-efficiency manner. Attached Figure Description

[0019] Figure 1 This is a perspective view of a general injection mold according to an embodiment of the present utility model.

[0020] Figure 2 This is an exploded view of a general injection mold according to an embodiment of the present utility model.

[0021] Figure 3 This is a cross-sectional view of a general injection mold according to an embodiment of this utility model.

[0022] Figure 4This is a perspective view of the general injection mold of this utility model after removing the upper mold and the forming side mold.

[0023] Figure 5 This is a perspective view of the upper mold of an embodiment of the present utility model.

[0024] Figure 6 This is a perspective view of a molding edge mold in a fitted state according to an embodiment of the present invention.

[0025] Figure 7 This is a perspective view of another embodiment of the present invention with the molding edge mold separated.

[0026] Figure 8 This is a perspective view of the mold core positioning seat, inner mold core, and insert in an embodiment of the present utility model.

[0027] Figure 9 This is a cross-sectional view of the mold core positioning seat, inner mold core, and insert in an embodiment of the present utility model.

[0028] Figure 10 This is a perspective view of an industrial plug shell obtained by injection molding using a general injection mold according to an embodiment of this utility model.

[0029] Figure 11 This is a perspective view of an industrial plug shell obtained by injection molding using another general-purpose injection mold according to an embodiment of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The accompanying drawings are for illustrative purposes only, representing schematic diagrams only, not actual object drawings, and should not be construed as limiting this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0031] Combined with appendix Figure 1 To be continued Figure 9This utility model provides a general-purpose injection mold for the production of industrial plug shells. From bottom to top, it includes a bottom mold 1, a middle mold 2, and an upper mold 3, arranged sequentially. It also includes forming side molds 4. The middle mold 2 has side mold guides 5 connected to both ends near the upper mold 3, forming a side mold travel channel 51 between the side mold guides 5. The forming side molds 4 are all movably connected within the side mold travel channel 51. A mold core positioning seat 6 is connected to the middle of the middle mold 2, and an inner mold core 7 and an insert 8 are connected to the mold core positioning seat 6. The upper mold 3 has a receiving cavity 31 on the side near the forming side mold 4. The receiving cavity 31 is connected to the upper mold core 9, which is positioned opposite the inner mold core 7. The forming side mold 4, the mold core positioning seat 6, the inner mold core 7, and the upper mold core 9 constitute a relatively closed injection cavity 41. An injection tube 91 is connected to the upper mold core 9. An injection channel 92 is provided on the upper mold core 9 and / or the inner mold core 7, which communicates with the injection tube 91. The injection channel 92 is connected to the injection cavity 41.

[0032] In this embodiment, the forming edge mold 4 is slidably connected within the edge mold path channel 51; the inner mold core 7 and the insert 8 are connected to the mold core positioning seat 6 by snap-fitting, the inner mold core 7 is used to form the internal contour of the industrial plug shell, and the insert 8 is used to form the outer surface slot of the industrial plug shell.

[0033] In this embodiment, the injection tube 91 passes through the upper mold 3 and the upper mold core 9, thereby introducing external molten colloid or plastic; the injection channel 92 may be provided only on the upper mold core 9, or only on the inner mold core 7, or simultaneously on both the upper mold core 9 and the inner mold core 7.

[0034] In this embodiment, industrial plug shells with the same inner diameter can use the same mold; only the molding side mold 4 needs to be replaced. The general injection mold used in this embodiment for the production of industrial plug shells is used as follows: the target molding side mold 4 is connected within the side mold travel channel 51. An external power source controls the molding side mold 4 to move towards the inner mold core 7, causing the molding side molds 4 to assemble. Then, an external power source controls the upper mold 3 to move towards the molding side mold 4, aligning and fitting the upper mold core 9 with the inner mold core 7, thus forming the injection cavity 41. Molten plastic or colloid is injected into the injection tube 91 to fill the entire injection cavity 41. After cooling, the desired industrial plug shell is obtained.

[0035] In this embodiment, as shown in the appendix Figure 2 To be continued Figure 7As shown, there are two forming side dies 4, which are arranged facing each other. Each forming side die 4 includes a side die body 42. The side die body 42 has limiting edges 43 on both sides. The side die guide 5 has a limiting groove 52 on the side near the side die travel channel 51. The limiting edge 43 is connected in the limiting groove 52. This ensures that the forming side die 4 can be stably connected in the side die travel channel 51 during the sliding process.

[0036] In this embodiment, as shown in the appendix Figure 2 To be continued Figure 7 As shown, a molding cavity 44 is formed on the inner side of the side mold body 42, and a notch 45 communicating with the molding cavity 44 is formed on the top surface of the side mold body 42. When the two side mold bodies 42 are fitted together, the two notches 45 are joined to form a groove 46, which faces the upper mold core 9. The receiving cavity 31 is adapted to the side mold body 42. During injection molding, the upper mold core 9 passes through the groove 46 and fits with the inner mold core 7. The receiving cavity 31 adapts to the outer contour of the side mold body 42, ensuring proper fit between the various parts of the mold during injection molding. The two molding side molds 4 are arranged facing each other, that is, the two molding cavities 44 are arranged opposite each other.

[0037] In this embodiment, as shown in the appendix Figure 6 and attached Figure 7 As shown, a side mold moving plate 47 is provided on the outer side of the side mold body 42, and a moving seat 48 is connected to the side mold moving plate 47. The moving seat 48 is used to connect to an external power source to drive the side mold body 42 to slide in the side mold travel channel 51.

[0038] In this embodiment, as shown in the appendix Figure 6 and attached Figure 7 As shown, the inner sides of the two forming side molds 4 are respectively provided with locking grooves 49 and locking blocks 410. When the two side mold bodies 4 are attached, the locking grooves 49 and the locking blocks 410 are engaged with each other.

[0039] In this embodiment, as shown in the appendix Figure 8 As shown, a gap 81 is provided between the insert 8 and the inner mold core 7, and the end face of the insert 8 is in contact with the inner wall of the molding cavity 44, so that the injection-molded industrial plug shell has a slot positioning structure.

[0040] In this embodiment, as shown in the appendix Figure 3 As shown, the bottom mold 1 has a first water inlet hole 11 and a first water outlet hole 12 on its side wall, and the inner mold core 7 has a mold core cavity 71 inside. The first water inlet hole 11 and the first water outlet hole 12 are both connected to the mold core cavity 71.

[0041] In this embodiment, as shown in the appendix Figure 1 Appendix Figure 8 and attached Figure 9 As shown, the side wall of the middle mold 2 is provided with a second water inlet hole 21 and a second water outlet hole 22. The mold core positioning seat 6 is provided with a liquid cooling circuit 61 inside. The second water inlet hole 21 and the second water outlet hole 22 are both connected to the liquid cooling circuit 61.

[0042] In this embodiment, the first water inlet hole 11 and the first water outlet hole 12 are connected to the mold core cavity 71, and the second water inlet hole 21 and the second water outlet hole 22 are connected to the liquid cooling circuit 61, so that liquid cooling treatment is performed after injection molding to quickly cool the injection molding cavity, thereby improving processing efficiency.

[0043] In this embodiment, as shown in the appendix Figure 7 As shown, an outer insert 10 is connected to one side of the edge mold guide 5, and an insert groove 411 adapted to the outer insert 10 is provided on the forming edge mold 4.

[0044] In this embodiment, as shown in the appendix Figure 2 and attached Figure 5 As shown, the bottom mold 1 and the middle mold 2 are fixedly connected. The side mold guide 5 is connected to a positioning post 53. The outer periphery of the upper mold 3 is provided with a sleeve groove 32. A sleeve 33 is connected in the sleeve groove 32. The sleeve 33 is arranged opposite to the positioning post 53. The connection and cooperation between the sleeve 33 and the positioning post 53 realizes the guidance when the upper mold 3 moves towards the middle mold 2, thereby improving the fitting accuracy between mold components.

[0045] In this embodiment, various industrial plug housings can be manufactured by changing the molding die 4:

[0046] As attached Figure 10 As shown, it is a type of product that uses an attached... Figure 6 The first industrial plug housing 100 prepared by the molding edge mold 4 includes a first housing body 110, one end of the first housing body 110 is provided with a first threaded connection part 120, and the side of the first housing body 110 is provided with a first locking slot 130; the first industrial plug housing 100 is an industrial plug housing with a protection level of IP44.

[0047] As attached Figure 11 As shown, it is a type of product that uses an attached... Figure 7The second industrial plug housing 200 prepared by the molding die 4 includes a second housing body 210. One end of the second housing body 210 is provided with a second threaded connection portion 220. The side of the second housing body 210 is provided with a second locking slot 230. The second threaded connection portion 220 is provided with a second snap ring engagement portion 240. The side of the second housing body 210 is also provided with a second opening 250. The second industrial plug housing 200 is an industrial plug housing with a protection level of IP67.

[0048] This utility model's technical solution uses a universal injection mold for the production of industrial plug shells. The bottom mold 1, middle mold 2, upper mold 3, mold core positioning seat 6, inner mold core 7, and upper mold core 9 are designed as a universal platform. When it is necessary to produce industrial plug shells with different shapes but the same inner diameter, it is not necessary to change the entire mold set. Only the corresponding forming side mold 4 needs to be replaced. This can realize the universal production of industrial plug shells with the same inner diameter but different protection levels, reducing the storage and management burden of a large number of special molds, thereby reducing the investment cost of special molds. At the same time, the mold development cycle and cost of new products are also greatly reduced. Manufacturers can meet the customized market demand in a low-cost and high-efficiency manner.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model, or direct / indirect applications in other related technical fields, should be included within the scope of protection of the claims of this utility model.

Claims

1. A universal injection mold for producing industrial plug housings, comprising a bottom mold, a middle mold, and an upper mold arranged sequentially, characterized in that, It also includes a molding side mold. The two ends of the middle mold near the upper mold are connected to side mold guides, and the side mold guides form a side mold travel channel. The molding side molds are all movably connected in the side mold travel channel. The middle part of the middle mold is connected to a mold core positioning seat. The mold core positioning seat is connected to an inner mold core and an insert. The upper mold has a receiving cavity on the side near the molding side mold. The receiving cavity is connected to an upper mold core, which is directly opposite the inner mold core. The molding side mold, the mold core positioning seat, the inner mold core and the upper mold core constitute an injection cavity. An injection tube is connected to the upper mold core. An injection channel communicating with the injection tube is opened on the upper mold core and / or the inner mold core. The injection channel is connected to the injection cavity.

2. The universal injection mold for producing industrial plug housings according to claim 1, characterized in that, Two forming side dies are provided, and the two forming side dies are arranged facing each other. Each forming side die includes a side die body. Limiting edges are provided on both sides of the side die body. A limiting groove is provided on the side of the side die guide near the side die travel channel. The limiting edge is connected in the limiting groove.

3. A universal injection mold for producing industrial plug housings according to claim 2, characterized in that, The inner side of the side mold body is provided with a molding cavity, and the top surface of the side mold body is provided with a notch that communicates with the molding cavity. When the two side mold bodies are fitted together, the two notches are joined together to form a groove. The groove is directly opposite the upper mold core, and the receiving cavity is adapted to the side mold body.

4. A universal injection mold for producing industrial plug housings according to claim 2, characterized in that, The outer side of the side mold body is provided with a side mold moving plate, and a moving seat is connected to the side mold moving plate.

5. A universal injection mold for producing industrial plug housings according to claim 2, characterized in that, The inner sides of the two forming side molds are respectively provided with locking grooves and locking blocks. When the two side mold bodies are attached, the locking grooves and locking blocks are interlocked.

6. A universal injection mold for producing industrial plug housings according to claim 3, characterized in that, A gap is provided between the insert and the inner mold core, and the end face of the insert is in contact with the inner wall of the molding cavity.

7. A universal injection mold for producing industrial plug housings according to any one of claims 1 to 5, characterized in that, The bottom mold has a first water inlet and a first water outlet on its side wall, and the inner mold core has a mold core cavity inside. The first water inlet and the first water outlet are both connected to the mold core cavity.

8. A universal injection mold for producing industrial plug housings according to any one of claims 1 to 5, characterized in that, The side wall of the middle mold is provided with a second water inlet and a second water outlet. The mold core positioning seat is provided with a liquid cooling circuit. The second water inlet and the second water outlet are both connected to the liquid cooling circuit.

9. A universal injection mold for producing industrial plug housings according to any one of claims 1 to 5, characterized in that, An external insert is connected to one side of the edge mold guide, and an insert groove adapted to the external insert is opened on the forming edge mold.

10. A universal injection mold for producing industrial plug housings according to any one of claims 1 to 5, characterized in that, The bottom mold and the middle mold are fixedly connected. A positioning post is connected to the side mold guide. A sleeve groove is provided on the outer periphery of the upper mold. A sleeve is connected in the sleeve groove. The sleeve is arranged opposite to the positioning post.

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