Injection mold and injection molding device

Abstract

The utility model relates to the technical field of injection molding equipment, and particularly discloses an injection mold and an injection molding device. The injection mold comprises a first male mold, a first female mold, a second female mold, a first male mold insert core, a first female mold insert core and a second female mold insert core, the first female mold and the second female mold are matched with the first male mold in a mold closing mode in the first direction so as to form a first part and a second part of a product respectively, the first male mold insert core is embedded in the first male mold, and the second male mold insert core is embedded in the second male mold. And the first female mold insert and the second female mold insert are respectively inserted into the first female mold and the second female mold. In the embodiment of the invention, the male mold insert is provided with the groove, and the first female mold insert and the second female mold insert are both provided with the bulges matched with the groove, so that when the first male mold is matched with the first female mold or the second female mold in a mold closing manner, the first male mold can be aligned with the first female mold or the second female mold under the guide matching of the groove and the bulges, and the mold closing accuracy is improved. Therefore, the concentricity of the first part and the second part of the product is improved, and the yield of the product is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding equipment, in particular to an injection mold and an injection molding device. BACKGROUND

[0002] At present, there are many plastic products that need to be completed by twice injection molding, such as two-color products. In the process of using an injection molding machine to injection mold a product, two sets of female molds and male molds are usually used to respectively mold a first part and a second part of the product.

[0003] However, when the male mold and the two sets of female molds are respectively matched by the male mold and the female molds to be matched, the concentricity of the male mold and the female molds to be matched cannot be guaranteed, that is, the male mold and the female molds to be matched will be misaligned, thereby causing the first part and the second part of the product to be misaligned, and further causing the product to be defective. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide an injection mold and an injection molding device to improve the yield of the product.

[0005] The injection mold provided by the embodiment of the present application is used for carrying and positioning a product, and comprises a first male mold, a first female mold, a second female mold, a first male mold insert, a first female mold insert and a second female mold insert. The first female mold and the second female mold are arranged at intervals and are respectively matched with the first male mold along a first direction to respectively mold a first part and a second part of the product. The first male mold insert is embedded in the first male mold, and the first female mold insert and the second female mold insert are respectively inserted into the first female mold and the second female mold. The first male mold insert is provided with a groove, and the first female mold insert and the second female mold insert are both provided with a protrusion matched with the groove. The protrusion is used for being inserted into the groove when the first female mold or the second female mold is matched with the first male mold, so as to position the position of the first female mold or the second female mold relative to the first male mold. The cross-sectional dimension of one end of the groove close to the corresponding protrusion is greater than the cross-sectional dimension of other parts of the groove, and the cross-sectional dimension of one end of each protrusion close to the groove is greater than the cross-sectional dimension of other parts of the protrusion.

[0006] The injection mold is used in the following manner: the first male mold is matched with the first female mold to form a first part of a product, and then the first male mold is matched with the second female mold to form a second part on the first part, thereby obtaining the product. Since the recess is formed in the male mold pin, the first female mold pin and the second female mold pin each have a protrusion matched with the recess, the cross-sectional size of the end of the recess close to the corresponding protrusion is larger than the cross-sectional size of other parts of the recess, and the cross-sectional size of the end of each protrusion close to the recess is larger than the cross-sectional size of other parts of the protrusion. Therefore, when the first male mold is matched with the first female mold or the second female mold, even if there is a misalignment between the first male mold and the first female mold or the second female mold, the first male mold can be aligned with the first female mold or the second female mold under the guidance of the recess and the protrusion, thereby improving the concentricity of the first part and the second part of the molded product, and further improving the yield of the product.

[0007] In some embodiments, the protrusion and the recess each have a draft angle, and the draft angle ranges from 3 degrees to 5 degrees.

[0008] In some embodiments, the first male mold includes a male mold plate and a male mold core embedded in the male mold plate, the first male mold pin is embedded in the male mold core, the first female mold includes a first female mold plate and a first female mold core embedded in the first female mold plate, the first female mold core is provided with a first through hole extending in the first direction, the first female mold pin is inserted into the first through hole, the second female mold includes a second female mold plate and a second female mold core embedded in the second female mold plate, the second female mold core is provided with a second through hole extending in the first direction, the second female mold pin is inserted into the second through hole, the protrusion of the first female mold pin forms a first cavity with the recess when inserted into the recess, the protrusion of the second female mold pin forms a second cavity with the recess when inserted into the recess, the first cavity is used to form the first part of the product when the first male mold and the first female mold are matched, and the second cavity is used to form the second part of the product when the first male mold and the second female mold are matched.

[0009] In some embodiments, the outer peripheral wall of the first female mold pin is spaced apart from the hole wall of the first through hole by a first preset length, the outer peripheral wall of the second female mold pin is spaced apart from the hole wall of the second through hole by the first preset length, and the first preset length ranges from 0.02 mm to 0.03 mm.

[0010] In some embodiments, the first female insert movably inserts into the first through hole, and the first female insert has a second preset length of floating space relative to the first female body along the first direction; the second female insert movably inserts into the second through hole, and the second female insert also has the second preset length of floating space relative to the second female body along the first direction, and the second preset length ranges from 0.03 mm to 0.05 mm.

[0011] In some embodiments, the first female insert and the second female insert each have a stopper, the stopper protrudes from a circumferential wall of the first female insert and the second female insert and is located on a side corresponding to the protrusion, an inner wall of the first through hole near one end of the corresponding protrusion and an inner wall of the second through hole near one end of the corresponding protrusion each are provided with a receiving groove for accommodating the corresponding stopper, the stopper is used for stopping at the first male insert when the first male and the first female or the second female are closed to limit the distance of the corresponding protrusion extending into the groove, and the stopper is also used for stopping at the bottom of the receiving groove when the first male and the first female or the second female are closed.

[0012] In some embodiments, the first female mold further comprises a positioning assembly, the positioning assembly comprises a positioning piece and a shaft sleeve, one end of the shaft sleeve movably inserts into the first female mold plate and abuts against the first female insert, one end of the positioning piece passes through the shaft sleeve and inserts into the first female insert, the other end of the shaft sleeve has a shoulder, and the shoulder is located between the side of the first female insert and the first female mold plate and has the second preset length of floating space along the first direction, and the shoulder is used for limiting the floating distance of the shaft sleeve relative to the first female body along the first direction.

[0013] In some embodiments, one end of the protrusion of the first female insert and the second female insert is respectively provided with a protruding block, the protruding block is adjacent to the protrusion, one end of the groove provided in the first male insert is provided with a limiting groove matched with the protruding block, and the protruding block is used for inserting into the limiting groove when the first female or the second female and the first male are matched to position the first female or the second female relative to the first male.

[0014] In some embodiments, the injection mold further comprises a second male mold and a second male mold insert embedded in the second male mold, the second male mold is arranged apart from the first male mold, the structure of the second male mold is the same as that of the first male mold, and the structure of the second male mold insert is the same as that of the first male mold insert; the second male mold is used to be combined with the other one of the first female mold and the second female mold when the first male mold is combined with one of the first female mold and the second female mold.

[0015] The injection molding device provided by the embodiments of the present application comprises an injection molding machine and the injection mold described above, the injection molding machine comprises a fixed disc and a moving disc, the first female mold and the second female mold are arranged apart on the fixed disc, and the first male mold is arranged on the moving disc; the moving disc is used to drive the first male mold to move so that the first male mold is combined with the first female mold or the second female mold.

[0016] The injection molding device described above improves the yield of the injection molded product by arranging the injection mold. The efficiency of combining the first female mold and the second female mold with the first male mold is improved by arranging the fixed disc to fix the first female mold and the second female mold and arranging the moving disc to drive the first male mold to move, thereby improving the efficiency of the injection molding device in injection molding products. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The injection mold provided by the embodiments of the present application is shown in the perspective structural schematic diagram.

[0018] Figure 2 The injection mold shown in the perspective structural schematic diagram. Figure 1 The injection mold shown in the perspective structural schematic diagram.

[0019] Figure 3 The injection mold shown in the perspective structural schematic diagram. Figure 2 The injection mold shown in the perspective structural schematic diagram.

[0020] Figure 4 The injection mold shown in the perspective structural schematic diagram. Figure 3 The structure of the first female mold insert and the first male mold insert in the injection mold is shown in the perspective structural schematic diagram.

[0021] Figure 5 The injection mold shown in the perspective structural schematic diagram. Figure 2 The injection mold shown in the perspective structural schematic diagram.

[0022] Figure 6 The injection mold shown in the perspective structural schematic diagram. Figure 5 The structure of the second female mold insert and the second male mold insert in the injection mold is shown in the perspective structural schematic diagram.

[0023] MAIN ELEMENT SYMBOL EXPLANATION

[0024] Injection mold 100, first male mold 10, male mold plate 11, male mold core 12, support mold foot 13, lower fixing plate 14, ejection plate 15, first female mold 20, first female mold plate 21, first female mold core 22, first through hole 221, accommodating groove 2211, first upper fixing plate 23, second female mold 30, second female mold plate 31, second female mold core 32, second through hole 321, second upper fixing plate 33, first male mold pin 40, groove 41, limiting groove 42, first female mold pin 50, second female mold pin 60, protrusion 61, forming part 611, stop part 62, protruding block 63, first cavity 70, second cavity 80, positioning assembly 90, positioning piece 91, shaft sleeve 92, shoulder 921, second male mold 101, second male mold pin 102. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, it should be noted that the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0028] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1The embodiment of the present application provides an injection mold 100, which is used for injection molding a product (not shown in the figure). The product can be a power button, a handwriting pen or the like plastic product. In the embodiment, the product is taken as the power button for example, and it is obvious that this is not a limitation to the embodiment of the present application.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4 , the injection mold 100 comprises a first male mold 10, a first female mold 20, a second female mold 30, a first male mold insert 40, a first female mold insert 50 and a second female mold insert 60.

[0031] The first female mold 20 and the second female mold 30 are arranged at intervals and are respectively matched with the first male mold 10 along a first direction to respectively form a first part (not shown in the figure) and a second part (not shown in the figure) of the product, the first male mold insert 40 is embedded in the first male mold 10, the first female mold insert 50 and the second female mold insert 60 are respectively inserted into the first female mold 20 and the second female mold 30, the first male mold insert 40 is provided with a groove 41, the first female mold insert 50 and the second female mold insert 60 are both provided with a protrusion 61 matched with the groove 41, the protrusion 61 is used for being inserted into the groove 41 when the first female mold 20 or the second female mold 30 is matched with the first male mold 10, so as to position the first female mold 20 or the second female mold 30 relative to the first male mold 10, the cross section size of the end of the groove 41 close to the corresponding protrusion 61 is greater than that of other parts of the groove 41, and the cross section size of the end of each protrusion 61 close to the groove 41 is greater than that of other parts of the protrusion 61. Wherein, the first direction is the X-axis direction shown in the figure, and the first part and the second part of the product can be different in color and material. Figure 2

[0032] ​The injection mold 100 is used in the following way: the first male mold 10 is combined with the first female mold 20 to form a first part of the product, and then the first male mold 10 is combined with the second female mold 30 to form a second part on the first part, thereby obtaining the product. Since the first male mold pin 40 is provided with the groove 41, the first female mold pin 50 and the second female mold pin 60 are both provided with the protrusion 61 which is adapted to the groove 41, and the cross section of the end of the groove 41 close to the corresponding protrusion 61 is larger, and the cross section of the end of each protrusion 61 close to the groove 41 is smaller. Therefore, when the first male mold 10 is combined with the first female mold 20 or the second female mold 30, even if there is a misalignment between the first male mold 10 and the first female mold 20 or the second female mold 30, the groove 41 and the protrusion 61 can still align the first male mold 10 with the first female mold 20 or the second female mold 30, thereby improving the concentricity of the first male mold 10 when combined with the second female mold 30 and the first female mold 20 respectively, and further improving the concentricity of the first part and the second part of the product, and improving the yield of the product.

[0033] For further reference, please see Figure 5 In the embodiment, the first male mold 10 includes the male mold plate 11 and the male mold stem 12 embedded in the male mold plate 11, the first male mold pin 40 is embedded in the male mold stem 12, the first female mold 20 includes the first female mold plate 21 and the first female mold stem 22 embedded in the first female mold plate 21, the first female mold stem 22 is provided with the first through hole 221 extending along the first direction, the first female mold pin 50 is inserted into the first through hole 221, the second female mold 30 includes the second female mold plate 31 and the second female mold stem 32 embedded in the second female mold plate 31, the second female mold stem 32 is provided with the second through hole 321 extending along the first direction, the second female mold pin 60 is inserted into the second through hole 321, and when the protrusion 61 of the first female mold pin 50 is inserted into the groove 41, the protrusion 61 and the groove 41 form the first cavity 70, and when the protrusion 61 of the second female mold pin 60 is inserted into the groove 41, the protrusion 61 and the groove 41 form the second cavity 80, the first cavity 70 is used to form the first part of the product when the first male mold 10 and the first female mold 20 are combined, and the second cavity 80 is used to form the second part of the product when the first male mold 10 and the second female mold 30 are combined. Specifically, the protrusion 61 of the first female mold pin 50 and the groove 41 form the first cavity 70, and the protrusion 61 of the second female mold pin 60 and the groove 41 form the second cavity 80, so that when the protrusion 61 of the first female mold pin 50 or the second female mold pin 60 is inserted into the groove 41, the concentricity of the protrusion 61 of the first female mold pin 50 or the second female mold pin 60 and the groove 41 is ensured, and the concentricity of the first cavity 70 and the second cavity 80 is ensured, that is, the concentricity of the first part and the second part of the product is ensured.

[0034] In the embodiment, the first male mold 10 further comprises a support pin 13 and a lower fixing plate 14, the support pin 13 is located between the male mold plate 11 and the lower fixing plate 14, one end of the support pin 13 is connected with the male mold plate 11 away from one end of the first female mold 20 and the second female mold 30, the other end of the support pin 13 is connected with the lower fixing plate 14.

[0035] In the embodiment, the number of the support pin 13 is two and is arranged at intervals, the first male mold 10 further comprises an ejection plate 15, the ejection plate 15 is arranged at the lower fixing plate 14 and is located between the two support pins 13, the ejection plate 15 is connected with the first male mold pin 40, and the ejection plate 15 is used to drive the first male mold pin 40 to move.

[0036] In the embodiment, the first female mold 20 further comprises a first upper fixing plate 23, the first upper fixing plate 23 is arranged on the side of the first female mold plate 21 away from the first male mold 10; the second female mold 30 further comprises a second upper fixing plate 33, the second upper fixing plate 33 is arranged on the side of the second female mold plate 31 away from the first male mold 10.

[0037] Please further refer to Figure 6 In the embodiment, the protrusion 61 of the second female mold pin 60 has a forming part 611, so that the protrusion 61 and the forming part 611 of the second female mold pin 60 and the corresponding groove 41 form the second cavity 80, thereby being able to form the structural features of the second part of the product.

[0038] Understandably, the protrusion 61 of the first female mold pin 50 also has a forming part 611, but the structure of the forming part 611 of the first female mold pin 50 is different from that of the forming part 611 of the second female mold pin 60, so that the protrusion 61 and the forming part 611 of the first female mold pin 50 and the corresponding groove 41 form the first cavity 70, thereby being able to form the structural features of the second part of the product.

[0039] In the embodiment, the groove 41 and the protrusion 61 both have a draft angle, and the range of the draft angle is 3-5 degrees. Specifically, the groove wall of the groove 41 and the peripheral side wall of the protrusion 61 are both arranged obliquely, and the protrusion 61 and the groove 41 both have the same draft angle, so as to ensure that the protrusion 61 can be adaptively inserted into the groove 41; if the angle of the draft angle is too small, the protrusion 61 and the groove 41 cannot be guided to cooperate, and if the angle of the draft angle is too large, the cooperation precision of the protrusion 61 and the groove 41 will be affected; by setting the draft angle to be 3-5 degrees, it can be ensured that the protrusion 61 can be adaptively inserted into the groove 41 when the protrusion 61 is slightly misaligned with the groove 41, and the precision of positioning the position of the first female mold 20 or the second female mold 30 relative to the first male mold 10 by cooperation of the protrusion 61 and the groove 41 can be improved.

[0040] In the embodiment, the outer peripheral walls of the first female core 50 are spaced apart from the hole walls of the first through hole 221 by a first preset length; the outer peripheral walls of the second female core 60 are also spaced apart from the hole walls of the second through hole 321 by the first preset length, and the first preset length ranges from 0.02 mm to 0.03 mm. Specifically, since the outer peripheral walls of the first female core 50 are spaced apart from the first through hole 221, when the first female mold 20 and the first male mold 10 are matched, if the protrusion 61 and the recess 41 of the first female core 50 are deviated, under the guiding cooperation of the recess 41 and the protrusion 61 with the draft angle, the first female core 50 can move relative to the hole walls of the first through hole 221 so that the protrusion 61 of the first female core 50 is opposite to the recess 41; similarly, since the outer peripheral walls of the second female core 60 are spaced apart from the second through hole 321, when the second female mold 30 and the first male mold 10 are matched, if the protrusion 61 and the recess 41 of the second female core 60 are deviated, under the guiding cooperation of the recess 41 and the protrusion 61 with the draft angle, the second female core 60 can move relative to the hole walls of the second through hole 321 so that the protrusion 61 of the second female core 60 is opposite to the recess 41.

[0041] In the embodiment, the outer peripheral walls of the first female core 50 include four side walls connected in sequence, the first through hole 221 is a square hole, and the four side walls of the first female core 50 are spaced apart from the hole walls of the first through hole 221 by the first preset length, so that when the first female mold 20 and the first male mold 10 are matched, under the guiding cooperation of the recess 41 and the protrusion 61 with the draft angle, the first female core 50 can move relative to the hole walls around the first through hole 221 to ensure that the protrusion 61 of the first female core 50 is opposite to the recess 41.

[0042] In the embodiment, the shape of the second female core 60 is substantially the same as that of the first female core 50, and the shape and structure of the second through hole 321 are substantially the same as those of the first through hole 221, which will not be described herein.

[0043] In the embodiment, the first female mold insert 50 is movably inserted into the first through hole 221, and the first female mold insert 50 has a floating space of a second preset length in the first direction relative to the first female mold body 22; the second female mold insert 60 is movably inserted into the second through hole 321, and the second female mold insert 60 also has a floating space of a second preset length in the first direction relative to the second female mold body 32, and the second preset length ranges from 0.03 mm to 0.05 mm. Specifically, since the first female mold insert 50 has a floating space of a second preset length in the first direction relative to the first female mold body 22, when the first female mold 20 and the first male mold 10 are matched and combined, rigid impact of the protrusion 61 of the first female mold insert 50 and the groove 41 of the male mold insert is prevented, and thus the protrusion 61 of the first female mold insert 50 and the groove 41 of the male mold insert are less likely to be damaged; similarly, since the second female mold insert 60 has a floating space of a second preset length in the first direction relative to the second female mold body 32, when the second female mold 30 and the first male mold 10 are matched and combined, rigid impact of the protrusion 61 of the second female mold insert 60 and the groove 41 of the male mold insert is prevented, and thus the protrusion 61 of the second female mold insert 60 and the groove 41 of the male mold insert are less likely to be damaged.

[0044] In the embodiment, the first female mold insert 50 and the second female mold insert 60 each have a stop portion 62, the stop portion 62 is protruded from a circumferential side wall of the first female mold insert 50 and a circumferential side wall of the second female mold insert 60 and located on one side of the corresponding protrusion 61, an inner wall of the first through hole 221 near one end of the corresponding protrusion 61 and an inner wall of the second through hole 321 near one end of the corresponding protrusion 61 each are provided with a receiving groove 2211 for accommodating the corresponding stop portion 62, and the stop portion 62 is used for stopping at the first male mold insert 40 when the first male mold 10 is matched and combined with the first female mold 20 or the second female mold 30, so as to limit the distance of the corresponding protrusion 61 extending into the groove 41, and the stop portion 62 is also used for stopping at the groove bottom of the receiving groove 2211 when the first male mold 10 is matched and combined with the first female mold 20 or the second female mold 30, so as to limit the distance of the first female mold insert 50 relative to the first female mold body 22 or the second female mold insert 60 relative to the second female mold body 32 moving away from the male mold body 12 in the first direction. Specifically, the stop portion 62 is arranged to avoid the protrusion 61 of the first female mold insert 50 or the second female mold insert 60 from being inserted into the groove 41 of the first male mold insert 40 for too long or too short when the first male mold 10 is matched and combined with the first female mold 20 or the second female mold 30, so as to facilitate improving the accuracy of the first part and the second part of the molded product.

[0045] In the embodiment, one end of the first female mold insert 50 and the second female mold insert 60 is further provided with a protrusion 61, and the protrusion 61 is adjacent to the protrusion 61. One end of the first male mold insert 40 is provided with a limiting groove 42 matched with the protrusion 63, and the protrusion 63 is used to insert the limiting groove 42 when the first female mold 20 or the second female mold 30 is matched with the first male mold 10, so as to position the position of the first female mold 20 or the second female mold 30 relative to the first male mold 10. In this way, it is beneficial to further improve the accuracy of the first female mold 20 and the second female mold 30 matched with the first male mold 10, and it is beneficial to improve the accuracy of the first part and the second part of the product formed by the injection mold 100.

[0046] In the embodiment, the first female mold 20 further comprises a positioning assembly 90, the positioning assembly 90 comprises a positioning piece 91 and a shaft sleeve 92, one end of the shaft sleeve 92 is inserted into the first female mold plate 21 and abuts against the first female mold insert 50, one end of the positioning piece 91 passes through the shaft sleeve 92 and is inserted into the first female mold insert 50, the other end of the shaft sleeve 92 has a shoulder 921, and the shoulder 921 is between the side of the first female mold insert 50 and the first female mold plate 21. There is a second predetermined length of floating space, and the shoulder 921 is used to limit the floating distance of the shaft sleeve 92 relative to the first female mold core 22 in the first direction. Specifically, when the first female mold 20 and the first male mold 10 are matched, the positioning assembly 90 and the first female mold insert 50 can float together relative to the first female mold plate 21 to avoid the first female mold insert 50 from being scratched by the first male mold insert 40. By setting the positioning assembly 90 and the stop 62 to limit the floating distance of the first female mold insert 50, the floating of the first female mold insert 50 relative to the first female mold core 22 in the first direction is more accurate, thereby improving the accuracy of the first female mold insert 50 cooperating with the groove 41 to form the first part of the product.

[0047] In the embodiment, the second female mold 30 also comprises a positioning assembly 90, and the cooperation relationship between the second female mold plate 31 and the second female mold insert 60 and the corresponding positioning assembly 90 is the same as that between the first female mold plate 21 and the first female mold insert 50 and the corresponding positioning assembly 90, which will not be repeated here.

[0048] In the embodiment, the injection mold 100 further comprises a second male mold 101 and a second male mold insert 102 embedded in the second male mold 101. The second male mold 101 is arranged apart from the first male mold 10, and has the same structure as the first male mold 10. The second male mold insert 102 has the same structure as the first male mold insert 40. The second male mold 101 is used to be combined with the other one of the first female mold 20 and the second female mold 30 when the first male mold 10 is combined with one of the first female mold 20 and the second female mold 30. Specifically, the injection mold 100 of the embodiment is a two-color mold. First, the first male mold 10 is combined with the first female mold 20 to form a first part of a product. Then, the first male mold 10 is combined with the second female mold 30 to form a second part of the product, while the second male mold 101 is combined with the first female mold 20 to form the first part of the product. Subsequently, the product is taken out of the first male mold 10, and the second male mold 101 is combined with the second female mold 30 to form the second part of the product, while the first male mold 10 is combined with the first female mold 20 again to form the first part of the product. In this way, the first male mold 10 and the second male mold 101 are combined with the first female mold 20 and the second female mold 30 in turn to form the first part and the second part of the product, which reduces the waiting time of the first female mold 20 and the second female mold 30, thereby improving the efficiency of forming the product.

[0049] In the embodiment, the number of the first male mold insert 40, the second male mold insert 102, the first female mold insert 50, and the second female mold insert 60 is multiple. The multiple first male mold inserts 40 are arranged apart from each other in the first male mold 10. The multiple second male mold inserts 102 are arranged apart from each other in the second male mold 101. The multiple first female mold inserts 50 are arranged apart from each other in the first female mold 20. The multiple second female mold inserts 60 are arranged apart from each other in the second female mold 30. When the first male mold 10 is combined with the first female mold 20 or the second female mold 30, the grooves 41 of the multiple first male mold inserts 40 accommodate the protrusions 61 of the multiple first female mold inserts 50 or the multiple second female mold inserts 60. When the second male mold 101 is combined with the second female mold 30 or the first female mold 20, the grooves 41 of the multiple second male mold inserts 102 accommodate the protrusions 61 of the multiple second female mold inserts 60 or the multiple first female mold inserts 50.

[0050] In summary, the injection mold 100 provided by the embodiment of the present application has the following advantages. The recess 41 is arranged on the first male mold pin 40, the first female mold pin 50 and the second female mold pin 60 are provided with the protrusions 61 matched with the recess 41, and when the first male mold 10 is matched with the first female mold 20 or the second female mold 30, even if the first male mold 10 is misaligned with the first female mold 20 or the second female mold 30, the first male mold 10 can be matched with the first female mold 20 or the second female mold 30 under the guidance of the recess 41 and the protrusion 61, the concentricity of the first male mold 10 matched with the second female mold 30 and the first female mold 20 is improved, the concentricity of the first part and the second part of the product is improved, and the yield of the product is improved. The outer peripheral wall of the first female mold pin 50 is spaced apart from the hole wall of the first through hole 221 by the first preset length, and when the first female mold 20 is matched with the first male mold 10, the first female mold pin 50 can move relative to the hole wall of the first through hole 221 under the guidance of the recess 41 and the protrusion 61 with the draft angle, so that the protrusion 61 of the first female mold pin 50 is opposite to the recess 41. The outer peripheral wall of the second female mold pin 60 is spaced apart from the hole wall of the second through hole 321 by the first preset length, and when the second female mold 30 is matched with the first male mold 10, the second female mold pin 60 can move relative to the hole wall of the second through hole 321 under the guidance of the recess 41 and the protrusion 61 with the draft angle, so that the protrusion 61 of the second female mold pin 60 is opposite to the corresponding recess 41. The first female mold pin 50 has the floating space of the second preset length in the first direction relative to the first female mold body 22, and when the first female mold 20 is matched with the first male mold 10, the protrusion 61 of the first female mold pin 50 and the recess 41 of the male mold pin are prevented from being rigidly impacted, so that the protrusion 61 of the first female mold pin 50 and the recess 41 of the male mold pin are less likely to be scratched. The second female mold pin 60 has the floating space of the second preset length in the first direction relative to the second female mold body 32, and when the second female mold 30 is matched with the first male mold 10, the protrusion 61 of the second female mold pin 60 and the recess 41 of the male mold pin are prevented from being rigidly impacted, so that the protrusion 61 of the second female mold pin 60 and the recess 41 of the male mold pin are less likely to be scratched.

[0051] The injection molding device (not shown in the figure) provided by the embodiment of the present application comprises an injection molding machine (not shown in the figure) and the injection mold 100 described above. The injection molding machine comprises a fixed disc (not shown in the figure) and a moving disc (not shown in the figure). The first female mold 20 and the second female mold 30 are arranged on the fixed disc. The first male mold 10 is arranged on the moving disc. The moving disc is used to drive the first male mold 10 to move, so that the first male mold 10 is matched with the first female mold 20 or the second female mold 30.

[0052] Specifically, the second male mold 101 is arranged on the moving disc and is arranged in a spaced manner with the first male mold 10. The moving disc can drive the first male mold 10 and the second male mold 101 to rotate, so as to exchange the positions of the first male mold 10 and the second male mold 101. The moving disc can also drive the first male mold 10 and the second male mold 101 to move along the first direction to approach or move away from the first female mold 20 and the second female mold 30. When the molded product is needed, the moving disc drives the first male mold 10 and the second male mold 101 to move along the first direction to approach the first female mold 20 and the second female mold 30, so that the first male mold 10 is matched with the first female mold 20 to form a first part of the molded product, and the second male mold 101 is matched with the second female mold 30. Then, the moving disc drives the first male mold 10 and the second male mold 101 to move along the first direction to move away from the first female mold 20 and the second female mold 30, so as to release the matched state. The moving disc drives the first male mold 10 and the second male mold 101 to rotate by 180 degrees, so as to exchange the positions of the first male mold 10 and the second male mold 101. The moving disc drives the first male mold 10 and the second male mold 101 to move along the first direction to approach the first female mold 20 and the second female mold 30, so that the first male mold 10 is matched with the second female mold 30 to form a second part of the molded product, and the second male mold 101 is matched with the first female mold 20 to form the first part of the molded product.

[0053] The injection molding device provided in the embodiment of the application improves the yield of the injection molded product by arranging the injection mold 100. The efficiency of the matched state of the first female mold 20 and the second female mold 30 and the first male mold 10 is improved by arranging the fixing disc to fix the first female mold 20 and the second female mold 30 and arranging the moving disc to drive the first male mold 10, and thus the efficiency of the injection molding device in injection molding the product is improved.

[0054] The embodiment of the application also provides a method for injection molding by using the injection molding device.

[0055] The matched state is formed by matching the first male mold 10 with the first female mold 20 to form a first cavity 70 and matching the second male mold 101 with the second female mold 30 to form a second cavity 80 under the driving of the moving disc of the injection molding machine, and then injecting the first kind of plastic into the first cavity 70 to form a first part of the product.

[0056] The matched state is formed by matching the first male mold 10 with the first female mold 20 to form a first cavity 70 and matching the second male mold 101 with the second female mold 30 to form a second cavity 80 under the driving of the moving disc of the injection molding machine, and then injecting the first kind of plastic into the first cavity 70 to form a first part of the product.

[0057] The first male mold 10 and the second female mold 30 are closed again to form the second cavity 80, and the second male mold 101 and the first female mold 20 are closed again to form the first cavity 70. Then, the first kind of plastic and the second kind of plastic are injected into the first cavity 70 and the second cavity 80 respectively, and the second part of the product is formed in the second cavity 80 and the first part of the product is formed in the first cavity 70.

[0058] The product is ejected, and the second cavity 80 is opened again to eject the product formed in the second cavity 80.

[0059] The steps of closing, opening, closing again and ejecting are repeated to successively injection mold the product.

[0060] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application.

Claims

1. An injection mold for injection molding a product, characterized in that, The injection mold comprises: The first male mold, the first female mold, the second female mold, the first male mold insert, the first female mold insert and the second female mold insert, the first female mold and the second female mold are arranged at intervals and are matched with the first male mold along the first direction to form the first part and the second part of the product respectively, the first male mold insert is embedded in the first male mold, the first female mold insert and the second female mold insert are respectively inserted into the first female mold and the second female mold, the first male mold insert is provided with a groove, the first female mold insert and the second female mold insert are both provided with a protrusion matched with the groove, the protrusion is used for inserting into the groove when the first female mold or the second female mold is matched with the first male mold, so as to position the position of the first female mold or the second female mold relative to the first male mold, the cross-sectional dimension of one end of the groove close to the corresponding protrusion is greater than that of other parts of the groove, and the cross-sectional dimension of one end of each protrusion close to the groove is greater than that of other parts of the protrusion.

2. The injection mold of claim 1, wherein The protrusion and the groove both have a draft angle, and the range of the draft angle is 3-5 degrees.

3. The injection mold of claim 1, wherein, The first male mold comprises a male mold plate and a male mold core embedded in the male mold plate, the first male mold insert is embedded in the male mold core, the first female mold comprises a first female mold plate and a first female mold core embedded in the first female mold plate, the first female mold core is provided with a first through hole extending along the first direction, the first female mold insert is inserted into the first through hole, the second female mold comprises a second female mold plate and a second female mold core embedded in the second female mold plate, the second female mold core is provided with a second through hole extending along the first direction, the second female mold insert is inserted into the second through hole, the protrusion of the first female mold insert forms a first cavity with the groove when inserted into the groove, the protrusion of the second female mold insert forms a second cavity with the groove when inserted into the groove, the first cavity is used for forming the first part of the product when the first male mold and the first female mold are matched, and the second cavity is used for forming the second part of the product when the first male mold and the second female mold are matched.

4. The injection mold of claim 3, wherein, The outer peripheral wall of the first female mold insert avoids the hole wall of the first through hole by a first preset length; the outer peripheral wall of the second female mold insert also avoids the hole wall of the second through hole by the first preset length, and the range of the first preset length is 0.02-0.03 mm.

5. The injection mold of claim 3, wherein, The first female mold insert is movably inserted into the first through hole, and the first female mold insert has a floating space of a second preset length along the first direction relative to the first female mold core; the second female mold insert is movably inserted into the second through hole, and the second female mold insert also has the floating space of the second preset length along the first direction relative to the second female mold core, and the range of the second preset length is 0.03-0.05 mm.

6. The injection mold of claim 5, wherein, The first female mold insert and the second female mold insert each have a stopper protruding from a peripheral wall thereof and located at one side of the corresponding protrusion, the inner wall of the first through hole near one end of the corresponding protrusion and the inner wall of the second through hole near one end of the corresponding protrusion each have a receiving groove for receiving the corresponding stopper, the stopper is used to stop at the first male mold insert when the first male mold is combined with the first female mold or the second female mold, so as to limit the distance of the corresponding protrusion extending into the groove, and the stopper is also used to stop at the bottom of the receiving groove when the first male mold is combined with the first female mold or the second female mold.

7. The injection mold of claim 6, wherein, The first female mold further comprises a positioning assembly, the positioning assembly comprises a positioning piece and a shaft sleeve, one end of the shaft sleeve is inserted into the first female mold plate and abuts against the first female mold insert, one end of the positioning piece passes through the shaft sleeve and is inserted into the first female mold insert, the other end of the shaft sleeve has a stop shoulder, there is a floating space of the second preset length between the side of the stop shoulder facing the first female mold insert and the first female mold plate, and the stop shoulder is used to limit the floating distance of the shaft sleeve relative to the first female mold along the first direction.

8. The injection mold of claim 1, wherein, One end of the protrusion of the first female mold insert and the second female mold insert is further provided with a protruding block, the protruding block is adjacent to the protrusion, one end of the groove of the first male mold insert is provided with a limiting groove matched with the protruding block, and the protruding block is used to be inserted into the limiting groove when the first female mold or the second female mold is combined with the first male mold, so as to position the first female mold or the second female mold relative to the first male mold.

9. The injection mold of claim 1, wherein, The injection mold further comprises a second male mold and a second male mold insert embedded in the second male mold, the second male mold is arranged in a spaced manner with the first male mold, the structure of the second male mold is the same as that of the first male mold, and the structure of the second male mold insert is the same as that of the first male mold insert; the second male mold is used to be combined with the other one of the first female mold and the second female mold when the first male mold is combined with one of the first female mold and the second female mold.

10. An injection molding apparatus characterized by comprising: The injection mold comprises an injection machine and an injection mold according to any one of claims 1-9, the injection machine comprises a fixed disc and a moving disc, the first female mold and the second female mold are arranged in a spaced manner on the fixed disc, and the first male mold is arranged on the moving disc, the moving disc is used to drive the first male mold to move, so that the first male mold is combined with the first female mold or the second female mold.

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