Mold core assembly with cooling function and injection mold thereof

Abstract

The utility model relates to the technical field of injection molds, in particular to a mold core assembly with a cooling function and an injection mold thereof, and the mold core assembly with the cooling function comprises a first mold core used for injection molding of a first pipe orifice of a pipe fitting, a second mold core used for injection molding of a second pipe orifice of the pipe fitting, and a horseshoe mold core group used for injection molding of a third pipe orifice of the pipe fitting, the horseshoe mold core set comprises horseshoe mold cores and horseshoes inserted into the horseshoe mold cores, the horseshoe mold cores are connected through limiting rotating mechanisms, and cooling water ways are arranged in the horseshoe mold cores; the first mold core is provided with a concave structure used for being aligned with the horseshoe mold core set, and the first mold core and the second mold core are aligned through an alignment structure. The mold core assembly can be cooled, stable production of products is guaranteed, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more specifically, to a core component with a cooling function and an injection mold thereof. Background Art

[0002] For three-way pipe fittings, at present, most of them are produced by injection molds with a horseshoe ejection structure. The horseshoe ejection structure can be used for injection molding of the arc structure at the three-way connection of water supply and drainage pipe fittings. In the horseshoe core part of the existing injection mold, the horseshoe ejection type usually consists of a horseshoe core and a horseshoe connected to the horseshoe core through a connecting rod mechanism. Most of the connecting rod mechanisms are arranged through the horseshoe core, and the connecting rod mechanism needs to occupy most of the volume position inside the horseshoe core; when encountering a smaller-diameter horseshoe core, since there is only a connecting rod mechanism inside the horseshoe core, the horseshoe core will continuously heat up during production, resulting in problems such as peeling, scalding, bubbles, and yellowing of the produced plastic parts, affecting the product quality. Moreover, for other core parts in the existing injection mold, when aligning between the cores, most of them are only matched by the outer contour parts in contact with each other, but there is still a possibility of displacement during actual production, which will also affect the product quality and reduce the production efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a core component with a cooling function and an injection mold thereof, which can cool the core component, ensure stable production of products, and improve production efficiency.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provide a core component with a cooling function, including a first core for injecting the first pipe orifice of the pipe fitting, a second core for injecting the second pipe orifice of the pipe fitting, and a horseshoe core group for injecting the third pipe orifice of the pipe fitting. The horseshoe core group includes a horseshoe core and a horseshoe inserted on the horseshoe core. The horseshoe core and the horseshoe are also connected through a limit rotation mechanism. A cooling water channel is arranged in the horseshoe core; a concave structure for aligning with the horseshoe core group is arranged on the first core, and the first core and the second core are aligned through an alignment structure.

[0006] The utility model provides a core component with a cooling function. The horseshoe core group can realize the injection molding of the arc structure at the three-way joint of the water supply and drainage pipe fittings through the horseshoe core and the horseshoe that is rotationally limited relative to the horseshoe core. The cooling water channel arranged in the horseshoe core can be used for cooling, which can improve the product quality and production efficiency. The arrangement of the concave structure can be used for aligning the first core with the horseshoe core group, and the arrangement of the alignment structure can be used for aligning between the first core and the second core, which can improve the combination of the core components when the mold is closed, and improve the product quality and production efficiency.

[0007] Preferably, the rotation limiting mechanism includes a rotating shaft and an elastic guide post. One end of the horseshoe core close to the horseshoe is provided with a sliding groove, the horseshoe is provided with a first insertion hole, and the rotating shaft passes through the sliding groove and the first insertion hole to realize the rotation between the horseshoe core and the horseshoe. A receiving cavity communicating with the horseshoe is arranged in the horseshoe core, the elastic guide post is connected to the receiving cavity, and the elastic guide post abuts against the horseshoe.

[0008] Preferably, a limiting block is connected to the end of the rotating shaft.

[0009] Preferably, the horseshoe core includes a plugging part, a molding part and a positioning part which are sequentially connected. The plugging part penetrates through the horseshoe and can be aligned with the concave structure. The horseshoe and the plugging part are connected by a rotation limiting mechanism, and the cooling water channel is arranged on the molding part and the positioning part.

[0010] Preferably, the core component with a cooling function further includes a first slider connected to the positioning part, and a water inlet and a water outlet communicating with the cooling water channel are arranged on the first slider.

[0011] Preferably, the concave structure is a groove arranged on the outer side wall of the first core, and the groove matches the plugging part.

[0012] Preferably, the horseshoe core is provided with a settlement step, and the horseshoe is provided with a step post for cooperating with the settlement step.

[0013] Preferably, the alignment structure includes a protruding part arranged on the first core and a concave part arranged on the second core, and the protruding part matches the concave part.

[0014] Preferably, a first cooling cavity and a second cooling cavity are respectively arranged in the first core and the second core, and water separating sheets are arranged in both the first cooling cavity and the second cooling cavity.

[0015] The utility model also provides an injection mold, which includes the above-mentioned core component with a cooling function.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model relates to a core component with a cooling function and an injection mold thereof. In the core component with a cooling function, a horseshoe core group can be used to inject the arc-shaped structure at the three-way connection of a water supply and drainage pipe fitting through a horseshoe core and a horseshoe that rotates relatively and is limited in position with respect to the horseshoe core; the cooling water channel arranged in the horseshoe core can be used for cooling, which can improve the product quality and production efficiency; the arrangement of the concave structure can be used for aligning the first core with the horseshoe core group, and the arrangement of the alignment structure can be used for aligning between the first core and the second core, which can improve the combination of the core components when the mold is closed; and the injection mold with the core component can also improve the product quality and production efficiency. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural view of Embodiment 1 of a core component with a cooling function according to the utility model;

[0019] Figure 2 It is a front view of a core component with a cooling function according to the utility model;

[0020] Figure 3 is Figure 2 a cross-sectional view taken along A-A in

[0021] Figure 4 is Figure 2 a cross-sectional view taken along B-B in

[0022] Figure 5 It is a schematic structural view of the first core according to the utility model;

[0023] Figure 6 It is a schematic structural view of the horseshoe core group according to the utility model;

[0024] Figure 7 It is a schematic structural view of the horseshoe core and the limit rotation mechanism according to the utility model;

[0025] Figure 8 It is a schematic structural view of the horseshoe according to the utility model;

[0026] Figure 9 It is a schematic structural view of Embodiment 2 of a core component with a cooling function according to the utility model.

[0027] The illustration marks are explained as follows:

[0028] 1 - First core, 11 - First cooling cavity, 12 - Concave structure, 13 - Protrusion, 2 - Second core, 21 - Second cooling cavity, 22 - Concave portion, 3 - Horseshoe core, 31 - Insertion portion, 311 - Slide groove, 32 - Molding portion, 321 - Settlement step, 33 - Positioning portion, 331 - Positioning round platform, 332 - Positioning connection platform, 34 - Cooling water channel, 35 - Accommodation cavity, 4 - Horseshoe, 41 - First jack, 42 - Second jack, 43 - Step column, 5 - Limit rotation mechanism, 51 - Rotating shaft, 511 - Limit block, 52 - Elastic guide post, 6 - First slider, 61 - Water inlet, 62 - Water outlet, 7 - Water isolation sheet, 8 - Second slider, 9 - Third slider. Detailed implementation mode

[0029] The present utility model will be further described below in conjunction with the detailed implementation mode. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0030] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] Embodiment 1

[0036] As Figures 1 to 8 Shown in the figure is the first embodiment of a core component with a cooling function according to the present utility model, which includes a first core 1 for injecting plastic into the first pipe orifice of a pipe fitting, a second core 2 for injecting plastic into the second pipe orifice of the pipe fitting, and a horseshoe core group for injecting plastic into the third pipe orifice of the pipe fitting. The horseshoe core group includes a horseshoe core 3 and a horseshoe 4 inserted on the horseshoe core 3. The horseshoe core 3 and the horseshoe 4 are also connected by a limit rotation mechanism 5. A cooling water channel 34 is provided in the horseshoe core 3; a concave structure 12 for aligning with the horseshoe core group is provided on the first core 1, and the first core 1 and the second core 2 are aligned through an alignment structure.

[0037] The core component with a cooling function of the present utility model can be applied to the injection molding production of three-way pipe fittings. The first core 1 can be used for the injection molding of the first pipe orifice of the three-way pipe fitting, and the second core 2 can be used for the injection molding of the second pipe orifice of the three-way pipe fitting. The horseshoe core group can realize the injection molding of the arc structure of the third pipe orifice of the water supply and drainage pipe fitting and the three-way connection through the horseshoe core 3 and the horseshoe 4 that is rotationally limited relative to the horseshoe core 3; the cooling water channel 34 arranged in the horseshoe core 3 can be used for cooling, which can improve the product quality and production efficiency; the setting of the concave structure 12 can be used for the alignment between the first core 1 and the horseshoe core group, and the setting of the alignment structure can be used for the alignment between the first core 1 and the second core 2, which can improve the combination of the core components when the mold is closed, and improve the product quality and production efficiency. It should be noted that the core component with a cooling function of the present utility model can be applied to the components when the diameter of the horseshoe core 3 is less than 50 mm.

[0038] As Figures 6 to 8 shown, the horseshoe core 3 includes a plug-in part 31, a forming part 32, and a positioning part 33 that are sequentially connected. As Figure 7 shown, the plug-in part 31 includes a first plug-in convex part and a second plug-in convex part that are fixedly connected to the forming part 32, and the height of the first plug-in convex part is greater than the height of the second plug-in convex part; a second jack 42 is provided on the horseshoe 4, and the first plug-in convex part of the plug-in part 31 passes through the horseshoe 4 through the second jack 42 and can be aligned with the concave structure 12 after protruding from the outer surface of the horseshoe 4; the horseshoe 4 and the plug-in part 31 are connected by a limit rotation mechanism 5, and the cooling water channel 34 is arranged on the forming part 32 and the positioning part 33.

[0039] As Figure 1 , Figure 4 , Figure 6 and Figure 7 shown, the limit rotation mechanism 5 includes a rotating shaft 51 and an elastic guide post 52; a chute 311 is provided at one end of the horseshoe core 3 close to the horseshoe 4, and a first jack 41 is provided on the horseshoe 4. The rotating shaft 51 passes through the chute 311 and the first jack 41 to realize the rotation between the horseshoe core 3 and the horseshoe 4; a receiving cavity 35 communicating with the horseshoe 4 is provided in the horseshoe core 3, and the elastic guide post 52 is connected to the receiving cavity 35 and abuts against the horseshoe 4. Specifically, the chute 311 is arranged on the first plug-in convex part, and the extending direction of the chute 311 is consistent with the height direction of the first plug-in convex part. The receiving cavity 35 communicates with the second plug-in convex part, and the elastic guide post 52 includes a guide post and a spring. One end of the spring is connected to the receiving cavity 35, the other end of the spring is connected to one end of the guide post, and the other end of the guide post can extend out of the receiving cavity 35 and contact the horseshoe 4.

[0040] To prevent the rotating shaft 51 from disengaging from the sliding groove 311, limiting blocks 511 are fixedly connected to both ends of the rotating shaft 51. The cross-sectional area of the limiting block 511 is larger than that of the rotating shaft 51. In addition, the limiting block 511 is adapted to the first jack 41, and the outer end surface of the limiting block 511 is smoothly arranged with the outer contour of the horseshoe 4 to form the forming surface of the horseshoe 4, as Figure 6 and Figure 7 shown.

[0041] As Figure 7 shown, the positioning portion 33 includes a positioning frustum 331 and a positioning connecting platform 332. The first end surface of the positioning frustum 331 is fixedly connected to the forming portion 32, and the second end surface of the positioning frustum 331 is fixedly connected to the positioning connecting platform 332. Specifically, the area of the first end surface of the positioning frustum 331 is smaller than that of the second end surface. Specifically, as Figure 4 shown, the cooling water channel 34 is a V-shaped cooling water channel, which can adapt to the structures of the forming portion 32 and the positioning portion 33, so that both the forming portion 32 and the positioning portion 33 can be sufficiently cooled; in this embodiment, the number of the cooling water channels 34 can be set to one or more according to actual usage requirements. Also, in this embodiment, the insertion portion 31, the forming portion 32, and the positioning portion 33 are integrally formed.

[0042] As Figure 3 and Figure 5 shown, the recessed structure 12 is a groove provided on the outer side wall of the first core 1, and the groove matches the insertion portion 31. Specifically, the groove matches the first insertion protrusion. In this embodiment, the first insertion protrusion can be a rectangular structure, and correspondingly, the groove can be a rectangular groove. It should be noted that the first insertion protrusion can also be other shaped structures.

[0043] As Figure 7 and Figure 8 shown, a settlement step 321 is provided on the horseshoe core 3, and a step column 43 for cooperating with the settlement step 321 is provided on the horseshoe 4. Specifically, the settlement step 321 is provided at one end of the forming portion 32 close to the insertion portion 31, and the settlement step 321 extends towards the inside of the forming portion 32 without affecting the forming surface of the outer contour of the forming portion 32.

[0044] As Figures 3 to 5 shown, the alignment structure includes a protrusion 13 provided at one end of the first core 1, and also includes a recess 22 provided at one end of the second core 2. The protrusion 13 matches the recess 22. In this embodiment, the protrusion 13 can be a cylindrical protrusion, and correspondingly, the recess 22 can be a cylindrical recess. It should be noted that the first insertion protrusion can also be other shaped structures.

[0045] As Figure 3 and Figure 4As shown in the figure, a first cooling cavity 11 and a second cooling cavity 21 communicating with the outside are respectively provided in a first core 1 and a second core 2, and a water separation sheet 7 is provided in each of the first cooling cavity 11 and the second cooling cavity 21. The provision of the water separation sheet 7 enables water paths to be formed in both the first cooling cavity 11 and the second cooling cavity 21, facilitating the inflow and outflow of cooling water.

[0046] Embodiment 2

[0047] This embodiment is similar to Embodiment 1, the difference being that, as Figure 9 shown in the figure, the core component with a cooling function in this embodiment further includes a first slider 6 connected to the positioning portion 33, and a water inlet 61 and a water outlet 62 communicating with the cooling water path 34 are provided on the first slider 6.

[0048] As Figure 9 shown in the figure, the core component with a cooling function further includes a second slider 8 connected to the first core 1 and a third slider 9 connected to the second core 2. The first slider 6, the second slider 8 and the third slider 9 can respectively drive the horseshoe core group, the first core 1 and the second core 2 to move, so as to realize the injection molding of the three-way pipe fitting and the ejection of the pipe fitting after injection molding.

[0049] Embodiment 3

[0050] The present utility model further provides an injection mold, including the core component with a cooling function described in Embodiment 1 or 2. In this embodiment, the first slider 5, the second slider 8 and the third slider 9 can be respectively drivingly connected to the oil cylinder of the injection mold through a transmission arrangement. When the oil cylinder drives the injection mold to perform a mold closing action, the first core 1, the second core 2 and the horseshoe core group can be aligned and abutted through their respective sliders, and injection molding operations can be carried out; when the oil cylinder drives the injection mold to perform a mold opening action after injection molding is completed, the first core 1, the second core 2 and the horseshoe core group can be separated through their respective sliders, thereby realizing the ejection from the three-way pipe fitting.

[0051] The working principle of a core component with a cooling function of the present utility model is as follows:

[0052] After the three-way pipe fitting is injection molded, the injection mold performs the mold opening action, which can drive the horseshoe core 3 to gradually disengage from the three-way pipe fitting. At this time, since there is cooling water flowing in the cooling water channel 34, the horseshoe core 3 can be cooled; when the horseshoe core 3 just starts to disengage from the three-way pipe fitting, the elastic guide post 52 is in a compressed state, and the horseshoe 4 is still in a static state under the elastic force of the elastic guide post 52; when the horseshoe core 3 continues to disengage and when the rotating shaft 51 slides to the first limit position in the sliding groove 311, since the elastic guide post 52 is still in a compressed state at this time, the horseshoe 4 will rotate and disengage from the three-way pipe fitting until the horseshoe core group is completely disengaged. The first core 1 and the second core 2 will also be separated with the mold opening action of the injection mold, and since there is also cooling water flowing in the first cooling cavity 11 and the second cooling cavity 21, the first core 1 and the second core 2 can also be cooled when disengaging from the three-way pipe fitting.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A core assembly with cooling function, characterized in that: The invention comprises a first core (1) for injection molding of a first pipe opening of a pipe fitting, a second core (2) for injection molding of a second pipe opening of the pipe fitting, and a horseshoe core group for injection molding of a third pipe opening of the pipe fitting, wherein the horseshoe core group comprises a horseshoe core (3) and a horseshoe (4) plugged into the horseshoe core (3), the horseshoe core (3) and the horseshoe (4) are connected via a limited rotation mechanism (5), and a cooling water path (34) is provided in the horseshoe core (3); the first core (1) is provided with a recessed structure (12) for alignment with the horseshoe core group, and the first core (1) and the second core (2) are aligned via an alignment structure.

2. The core assembly with cooling function according to claim 1, characterized in that: The position-limiting rotation mechanism (5) comprises a rotating shaft (51) and an elastic guide column (52); a sliding groove (311) is provided at one end of the horseshoe core (3) close to the horseshoe (4); a first plug hole (41) is provided on the horseshoe (4); the rotating shaft (51) passes through the sliding groove (311) and the first plug hole (41) to realize the rotation between the horseshoe core (3) and the horseshoe (4); a receiving cavity (35) communicating with the horseshoe (4) is provided in the horseshoe core (3); the elastic guide column (52) is connected to the receiving cavity (35), and the elastic guide column (52) is in contact with the horseshoe (4).

3. The core assembly with cooling function according to claim 2, characterized in that: The end of the rotating shaft (51) is connected to a limiting block (511).

4. The core assembly with cooling function according to claim 1, characterized in that: The horseshoe core (3) comprises a plug-in portion (31), a molding portion (32), and a positioning portion (33) which are connected in sequence; the plug-in portion (31) penetrates the horseshoe (4) and can be aligned with the recessed structure (12); the horseshoe (4) and the plug-in portion (31) are connected via a position-limiting rotation mechanism (5); and the cooling water path (34) is provided on the molding portion (32) and the positioning portion (33).

5. The core assembly with cooling function according to claim 4, characterized in that: It also comprises a first sliding block (6) connected to the positioning portion (33), wherein the first sliding block (6) is provided with a water inlet (61) and a water outlet (62) which are connected to the cooling water circuit (34).

6. The core assembly with cooling function according to claim 4, characterized in that: The recessed structure (12) is a groove provided on the outer side wall of the first core (1), and the groove matches the plug-in portion (31).

7. The core assembly with cooling function according to any one of claims 1 to 6, characterized in that: The horseshoe core (3) is provided with a sinking step (321), and the horseshoe (4) is provided with a step column (43) for cooperating with the sinking step (321).

8. The core assembly with cooling function according to any one of claims 1 to 6, characterized in that: The alignment structure comprises a raised portion (13) provided on the first core (1), and also comprises a recessed portion (22) provided on the second core (2), wherein the raised portion (13) matches the recessed portion (22).

9. The core assembly with cooling function according to any one of claims 1 to 6, characterized in that: A first cooling cavity (11) and a second cooling cavity (21) are respectively provided in the first core (1) and the second core (2); and a water-isolating sheet (7) is provided in both the first cooling cavity (11) and the second cooling cavity (21).

10. An injection mold, characterized in that: A core assembly with cooling function comprising the core assembly according to any one of claims 1 to 9.

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