A mold with cooling water channel

Abstract

The utility model provides a mold with a cooling waterway, comprising a fixed mold and a movable mold arranged relatively, and a female mold core and a male mold core respectively arranged in the fixed mold and the movable mold; the male mold core comprises: a main body; a convex part, the convex part is arranged on the side of the main body facing the female mold core, so as to cooperate with the female mold core to form a cavity; a cooling waterway, the cooling waterway comprises an inlet waterway, an outlet waterway and a waterway insert arranged in the main body; the waterway insert comprises a first part and a second part arranged in sequence along the direction of the main body toward the convex part, and a first channel is formed between the first part and the main body, and a second channel and a third channel are formed between the second part and the main body; the outlet of the inlet waterway is connected to the inlet of the first channel through the second channel, and the outlet of the first channel is connected to the inlet of the outlet waterway through the third channel. The mold with a cooling waterway provided by the utility model has a simple and compact structure, good cooling effect and stronger applicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding, and in particular relates to a mold with a cooling water channel. Background Art

[0002] In injection molds and die-casting molds, the temperature of the liquid material used to mold the product is relatively high, so the mold needs to be cooled down in time to extend the service life of the mold and ensure that the product can be quickly cooled and demolded to prevent defects such as mold sticking, burning, and deformation due to uneven cooling. The most commonly used method at present is to open a water channel in the mold core and circulate a certain medium (such as water or oil) in the water channel continuously, so as to conduct the high-temperature liquid material to the mold and take away the temperature, thereby timely reducing the temperature of the mold and the product.

[0003] At present, the cooling water channels in the mold mostly adopt horizontal, vertical or horizontal and vertical connected straight water channels. When processing some small shell products, for example, the product has a skirt and an end connected to one end of the skirt. Although the skirt is relatively high compared to the product itself (for example, the height of the skirt in the height direction of the mold core is not less than 10mm), the 10mm space is not enough for setting up a straight water channel. Therefore, the set straight water channel can only play a cooling role at the other end of the skirt away from the end, and therefore cannot play a good cooling role on the mold core part inside the molded product. This type of water channel structure has problems such as uneven cooling and less heat removal. In addition, for some specific product parts, the position of the ejector in the mold must be strictly arranged and cannot be easily changed. However, the position of the ejector is very close to the water channel. After a certain period of use, the mold will leak. Alternatively, the position of the ejector is likely to interfere with the position of the water channel, causing the ejector to break the water channel. However, if the ejector breaks the water channel, the cooling medium in the water channel will enter the mold and affect the molding quality of the product. Therefore, it is not allowed in either injection molds or die-casting molds. Therefore, the layout of the straight water channel also has limitations. Utility Model Content

[0004] In view of the above problems existing in the existing workpiece processing technology, the main purpose of the utility model is to provide a mold with a cooling water channel. The provided mold with a cooling water channel has a simple and compact structure, good cooling effect and stronger applicability.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides a mold with a cooling water channel, which comprises a fixed mold, a movable mold, and a female mold core and a male mold core respectively located in the fixed mold and the movable mold; the male mold core comprises:

[0007] Body part;

[0008] A convex portion, the convex portion is arranged on a side of the main body portion facing the female mold core, so as to cooperate with the female mold core to form a mold cavity;

[0009] A cooling water channel, the cooling water channel includes an inlet water channel, an outlet water channel and a water channel insert arranged on the main body; the water channel insert includes a first part and a second part arranged in sequence along the main body toward the convex part, and a first channel is formed between the first part and the main body, and a second channel and a third channel are formed between the second part and the main body; the outlet of the inlet water channel is connected to the inlet of the first channel through the second channel, and the outlet of the first channel is connected to the inlet of the outlet water channel through the third channel.

[0010] As a further description of the above technical solution, one end of the main body away from the convex portion is inwardly recessed to form an embedding groove;

[0011] The bottom wall of the embedding groove abuts against an end of the first part away from the second part;

[0012] The groove side wall of the embedding groove abuts against a surface of the second portion facing the groove side wall.

[0013] As a further description of the above technical solution, at least a portion of the second portion facing the groove side wall is recessed inwardly along a direction perpendicular to the main body portion toward the convex portion to form two avoidance portions, and a second channel and a third channel are respectively formed between the two avoidance portions and the groove side wall of the embedded groove.

[0014] As a further description of the above technical solution, ends of the two avoiding portions are located in a direction from the main body toward the convex portion so as to overlap with a connecting edge of the second portion and the first portion.

[0015] As a further description of the above technical solution, the diameter of the circumscribed circle of the cross section of the first part of the water channel insert is smaller than the diameter of the circumscribed circle of the cross section of the second part, so that a first channel is formed between the surface of the first part facing the side wall of the groove and the side wall of the groove.

[0016] As a further description of the above technical solution, the water channel insert includes a water-isolating portion extending from the first portion toward the groove side wall of the embedded groove toward the groove side wall of the embedded groove;

[0017] A side of the water-isolating portion facing the groove side wall of the embedding groove abuts against the groove side wall of the embedding groove;

[0018] A side of the water-isolating portion facing the bottom wall of the embedding groove abuts against the bottom of the embedding groove;

[0019] A surface of the water-isolating portion facing away from the groove bottom wall of the embedding groove abuts against an end surface of the second portion protruding from the first portion along a direction perpendicular to the main body portion toward the convex portion.

[0020] As a further description of the above technical solution, the water-isolating part is connected to the first part in an integral / split manner.

[0021] As a further description of the above technical solution, in a direction perpendicular to the main body toward the convex portion, the second channel and the third channel are respectively located on both sides of the water isolation portion and are adjacent to the water isolation portion.

[0022] As a further description of the above technical solution, a positioning portion is extended outwardly from one end of the second portion away from the first portion in a direction perpendicular to the main body portion toward the convex portion, and the positioning portion has an asymmetric first side and a second side;

[0023] When the water channel insert is installed in the embedding groove, the first side and the second side of the positioning portion are both against the groove side wall of the embedding groove, and the end surface of the positioning portion facing away from the second portion is flush with the bottom surface of the male mold core.

[0024] As a further description of the above technical solution, a sealing ring is further sleeved on the second part; in the direction from the main body to the convex part, the sealing ring is located between any one of the avoidance part and the positioning part.

[0025] The outstanding effects of the utility model are:

[0026] The mold with a cooling water channel provided by the utility model is provided with a water channel insert in the main body of the male mold core, and the first part and the second part of the water channel insert are sequentially arranged along the direction of the main body toward the convex part, so that the first channel formed between the first part and the main body is closer to the convex part of the male mold core than the second channel and the third channel formed between the second part and the main body, and the outlet of the water inlet water channel is connected with the inlet of the first channel through the second channel, and the outlet of the first channel is connected with the inlet of the water outlet water channel through the third channel. Therefore, the first channel is closer to the convex part of the male mold core than the outlet of the water inlet water channel and the inlet of the water outlet water channel, so that the cooling medium can continuously circulate in the cooling water channel, and the product in the cavity formed by the male mold core and the female mold core and the convex part of the male mold core can be cooled more effectively. Compared with conventional cooling water channels that do not use water channel inserts, the overall structure of the cooling water channel is more compact, and the water channel portion along the direction of the main body toward the convex portion is easier to obtain, reducing the limitations of its overall design in the male mold core. It is more convenient to use the cooling medium circulating in the cooling water channel to take away the heat conducted to the convex portion of the male mold core, thereby timely reducing the temperature of the mold and the product, and is more suitable for cooling operations of shell products or products with ejectors around them. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the external structure of the male mold core (including the external cooling pipeline) in the embodiment of the utility model;

[0028] Figure 2 It is another external structural schematic diagram of the male mold core in the embodiment of the utility model;

[0029] Figure 3 It is a partial perspective view of the male mold core (the convex part is not shown) in the embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the water channel insert in the embodiment of the utility model;

[0031] Figure 5 It is a schematic structural diagram of the coordination of the water inlet channel, the water outlet channel and the water channel insert of the cooling water channel in the embodiment of the utility model.

[0032] Description of Figure Numbers:

[0033] 1. Male mold core; 2. Main body; 3. Protrusion; 4. Water inlet channel; 5. Water outlet channel; 6. First part; 7. Second part; 8. Groove; 9. Avoidance part; 10. Water-blocking part; 11. Positioning part; 12. Sealing ring; 13. External water inlet pipeline; 14. External water outlet pipeline. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying 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 component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. 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. The following describes the implementation method of the present utility model based on its overall structure.

[0036] See also Figures 1 to 5 One embodiment of the utility model discloses a mold with a cooling water channel, the mold with a cooling water channel comprises a fixed mold, a movable mold, and a female mold core and a male mold core 1 respectively located in the fixed mold and the movable mold; the male mold core 1 comprises:

[0037] Body part 2;

[0038] A convex portion 3, wherein the convex portion 3 is disposed on a side of the main body 2 facing the female mold core, so as to cooperate with the female mold core to form a mold cavity;

[0039] A cooling water circuit, the cooling water circuit includes an inlet water circuit 4, an outlet water circuit 5 and a water circuit insert arranged on the main body 2; the water circuit insert includes a first part 6 and a second part 7 arranged in sequence along the main body 2 toward the convex part 3, and a first channel is formed between the first part 6 and the main body 2, and a second channel and a third channel are formed between the second part 7 and the main body 2; the outlet of the inlet water circuit 4 is connected to the inlet of the first channel through the second channel, and the outlet of the first channel is connected to the inlet of the outlet water circuit 5 through the third channel.

[0040] In the above-mentioned setting method, a water channel insert is added to the main body 2 of the male mold core 1, and the first part 6 and the second part 7 of the water channel insert are sequentially arranged along the main body 2 toward the convex part 3, so that the first channel formed between the first part 6 and the main body 2 is closer to the convex part 3 of the male mold core 1 than the second channel and the third channel formed between the second part 7 and the main body 2, and the outlet of the water inlet waterway 4 is connected with the inlet of the first channel through the second channel, and the outlet of the first channel is connected with the inlet of the water outlet waterway 5 through the third channel. Therefore, the first channel is closer to the convex part 3 of the male mold core 1 than the outlet of the water inlet waterway 4 and the inlet of the water outlet waterway 5, so that the cooling medium can continuously circulate in the cooling waterway, and the product in the cavity and the convex part 3 of the male mold core 1 can be cooled more effectively. Compared with the conventional cooling water channel without water channel inserts, the cooling water channel of this embodiment has a more compact structure, and the water channel portion along the main body 2 toward the convex portion 3 is easier to obtain, reducing the limitations of the overall design of the cooling water channel in the male mold core 1. It is more convenient to use the cooling medium circulating in the cooling water channel to take away the heat conducted to the convex portion 3 of the male mold core 1, thereby timely reducing the temperature of the mold and the product, and is more suitable for cooling operations of shell products or products with ejectors around them.

[0041] See also Figures 1 to 3Specifically, in the present embodiment, the main body portion 2 is integrally connected to the lower portion of the convex portion 3, and a groove 8 is recessed inwardly on its lower end surface, which has a circular cross-section and a rectangular longitudinal section, and is used to install the water channel insert which is generally in the shape of a stepped column, so that the bottom wall of the groove 8 is located above its side wall. After the water channel insert is installed in the groove 8, the top end of the first portion 6 abuts against the bottom wall of the groove 8, and the surface of the second portion 7 facing the side wall of the groove 8 abuts against the side wall of the groove 8.

[0042] See also Figures 2 to 5 Specifically, in this embodiment, the upper portion of the second portion 7 is recessed inwardly in the horizontal direction toward the surface of the groove side wall to form two avoidance portions 9, which are in the shape of irregular steps, and the groove side wall portion of the embedded groove 8 that matches the second portion 7 is in the shape of a regular cylinder. Therefore, after the waterway insert is embedded in the embedded groove 8, a second channel and a third channel are respectively formed between the two avoidance portions 9 and the groove side wall of the embedded groove 8 to serve as part of the cooling waterway. Specifically, in this embodiment, the second channel and the third channel are asymmetrically arranged with respect to the axial center line of the waterway insert, so as to facilitate the arrangement of the external water inlet pipe 13 and the external water outlet pipe 14 connected to the water inlet waterway 4 and the water outlet waterway 5 respectively, thereby reducing the overall occupied space of the mold. Of course, in other embodiments, the second channel and the third channel can also be arranged axially symmetrically with respect to the axial center line of the waterway insert.

[0043] Specifically, in this embodiment, in order to facilitate the processing of the water channel insert, the ends of the two avoidance portions 9 are located at the same time as the connecting edges of the second portion 7 and the first portion 6 in the vertical direction. At the same time, the second channel and the third channel are also convenient for connecting the first channel formed between the first portion 6 and the embedding groove 8.

[0044] Specifically, in the present embodiment, in order to facilitate the cooling medium to cool the convex portion 3 of the male mold core 1 within a unit area while ensuring the required mechanical strength of the male mold core 1, the diameter of the circumscribed circle of the cross section of the first portion 6 of the water channel insert is set to be smaller than the diameter of the circumscribed circle of the cross section of the second portion 7 thereof, so that after the water channel insert is embedded in the embedding groove 8, the first annular channel is formed between the portion of the first portion 6 of the water channel insert facing the side wall of the groove 8 and the side wall of the groove 8.

[0045] See also Figure 4 and Figure 5Specifically, in this embodiment, since the second channel and the third channel are asymmetrically arranged about the axial center line of the water channel insert, the arranged water channel insert also includes a water-blocking portion 10 extending from the first portion 6 toward the groove side wall of the embedded groove 8, and the water-blocking portion 10 is in the form of a sheet with a certain thickness; after the water channel insert is embedded in the embedded groove 8, the side of the sheet-shaped water-blocking portion 10 facing the groove side wall of the embedded groove 8 abuts against the groove side wall of the embedded groove 8, and at the same time, its upper end face abuts against the groove bottom of the embedded groove 8, and its side away from the groove bottom wall of the embedded groove 8 abuts against the end face of the second portion 7 protruding from the first portion 6 in the horizontal direction, thereby ensuring that the cooling medium entering the first channel through the second channel can be guided by the blocking effect of the water-blocking portion 10 to fully play a cooling role before flowing out of the first channel and into the third channel.

[0046] Specifically, in this embodiment, in order to facilitate the molding of the water channel insert, the water barrier 10 is connected to the first part 6 in a split manner, and a snap-in groove is directly processed on the first part 6, and the sheet-shaped water barrier 10 can be directly snapped into the snap-in groove during assembly. Of course, in other embodiments, the water barrier 10 can also be connected to the first part 6 in an integral manner.

[0047] Specifically, in this embodiment, in the horizontal direction, the second channel and the third channel are respectively located on both sides of the water barrier 10 and are adjacent to the water barrier 10 to ensure the consistency of the flow direction of the cooling medium in the first channel.

[0048] Please continue reading Figures 2 to 5 Specifically, in the present embodiment, a positioning portion 11 is extended outwardly at one end of the second portion 7 away from the first portion 6 in a direction perpendicular to the main body portion 2 toward the convex portion 3, and the positioning portion 11 has an asymmetric first side and a second side, so as to facilitate the rapid positioning and installation of the water channel insert into the embedding groove 8 in the horizontal direction; when the water channel insert is installed in the embedding groove 8, the first side and the second side of the positioning portion 11 are both against the side walls of the embedding groove 8, and the end surface of the positioning portion 11 away from the second portion 7 is flush with the bottom surface of the male mold core 1. After the male mold core 1 and other parts of the male mold are assembled, the water channel insert can be well limited in the vertical direction without the need to use other fasteners.

[0049] Specifically, in the present embodiment, a sealing ring 12 is further sleeved on the second portion 7 of the water channel insert, and the sealing ring 12 is located between any of the avoidance portions 9 and the positioning portion 11 in the vertical direction, thereby ensuring the sealing of the lower side of the avoidance portion 9, thereby effectively reducing the phenomenon of cooling medium leakage from the male mold core 1 during the product molding process and improving production efficiency.

[0050] Specifically, in this embodiment, the water inlet waterway 4 and the water outlet waterway 5 are respectively connected to the external water inlet pipe 13 and the external water outlet pipe 14 included in the external cooling pipe, so the cooling medium will enter the water inlet waterway 4 from the external water inlet pipe 13, and then flow upward from the outlet of the water inlet waterway 4 through the vertically formed second channel, and then flow to the inlet of the first channel, and then flow counterclockwise in the horizontal direction to the outlet of the first channel, and then flow downward through the vertically formed third channel, flow out from the outlet of the third channel and then flow into the water outlet waterway 5, and then flow to the external water outlet pipe 14.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold with a cooling water channel, characterized in that: It includes a relatively arranged fixed mold, a movable mold, and a female mold core and a male mold core respectively located in the fixed mold and the movable mold; the male mold core includes: Body part; A convex portion, the convex portion is arranged on a side of the main body portion facing the female mold core, so as to cooperate with the female mold core to form a mold cavity; A cooling water channel, the cooling water channel includes an inlet water channel, an outlet water channel and a water channel insert arranged on the main body; the water channel insert includes a first part and a second part arranged in sequence along the main body toward the convex part, and a first channel is formed between the first part and the main body, and a second channel and a third channel are formed between the second part and the main body; the outlet of the inlet water channel is connected to the inlet of the first channel through the second channel, and the outlet of the first channel is connected to the inlet of the outlet water channel through the third channel.

2. The mold with cooling water channel according to claim 1, characterized in that: One end of the main body away from the convex portion is inwardly recessed to form an embedding groove; The bottom wall of the embedding groove abuts against an end of the first part away from the second part; The groove side wall of the embedding groove abuts against a surface of the second portion facing the groove side wall.

3. The mold with cooling water channel according to claim 2, characterized in that: At least a portion of the second portion facing the groove side wall is recessed inwardly along a direction perpendicular to the main body portion toward the convex portion to form two avoidance portions, and a second channel and a third channel are respectively formed between the two avoidance portions and the groove side wall of the embedded groove.

4. The mold with cooling water channel according to claim 3, characterized in that: The ends of the two avoiding portions are located in a direction from the main body toward the convex portion and overlap with the connecting edge of the second portion and the first portion.

5. The mold with cooling water channel according to claim 4, characterized in that: The diameter of the cross-sectional circumscribed circle of the first part of the water channel insert is smaller than the diameter of the cross-sectional circumscribed circle of the second part, so that a first channel is formed between the surface of the first part facing the groove side wall of the embedded groove and the groove side wall of the embedded groove.

6. The mold with cooling water channel according to claim 5, characterized in that: The water channel insert comprises a water-blocking portion extending from the first portion toward the groove side wall of the embedded groove toward the groove side wall of the embedded groove; A side of the water-isolating portion facing the groove side wall of the embedding groove abuts against the groove side wall of the embedding groove; A side of the water-isolating portion facing the bottom wall of the embedding groove abuts against the bottom of the embedding groove; A surface of the water-isolating portion facing away from the groove bottom wall of the embedding groove abuts against an end surface of the second portion protruding from the first portion along a direction perpendicular to the main body portion toward the convex portion.

7. The mold with cooling water channel according to claim 6, characterized in that: The water-isolating part is connected to the first part in an integral or split manner.

8. The mold with cooling water channel according to claim 6, characterized in that: In a direction perpendicular to the main body toward the convex portion, the second channel and the third channel are respectively located on both sides of the water isolation portion and are adjacent to the water isolation portion.

9. The mold with cooling water channel according to claim 3, characterized in that: A positioning portion is extended outwardly from one end of the second portion away from the first portion in a direction perpendicular to the main body portion toward the convex portion, and the positioning portion has an asymmetric first side and a second side; When the water channel insert is installed in the embedding groove, the first side and the second side of the positioning portion are both against the groove side wall of the embedding groove, and the end surface of the positioning portion facing away from the second portion is flush with the bottom surface of the male mold core.

10. The mold with cooling water channel according to claim 9, characterized in that: A sealing ring is also sleeved on the second part; in the direction from the main body to the convex part, the sealing ring is located between any of the avoidance parts and the positioning part.

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