Injection mold and injection molding part

Abstract

The embodiment of the utility model relates to the technical field of injection molds, and discloses an injection mold and an injection molding part. According to the injection mold, the fixed mold plate and the movable mold plate jointly define the forming cavity, and the surface, facing the forming cavity, of the movable mold plate is used for forming the appearance face of an injection molding part; the straight ejection mechanism comprises a straight ejection block movably connected with the fixed mold plate, the straight ejection block and the fixed mold plate jointly define a first runner, the first runner comprises an input end and an output end which are opposite in the injection direction, and the output end communicates with the forming cavity; the hot nozzle is inserted into the fixed mold plate and is communicated with the input end; and the first runner is arranged to enable the injection molding material conveyed by the hot nozzle to be conveyed into the forming cavity through the first runner. According to the injection mold, the defects of the appearance face of the injection molding part can be reduced, and the appearance quality of the injection molding part is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to injection mold technical field, especially injection mold and injection molding part. BACKGROUND

[0002] With the continuous upgrading of vehicle technology, the appearance quality requirements of the interior parts of the vehicle are also continuously improved.

[0003] The interior parts in the prior art are mostly made by mold injection. The injection mold generally includes a fixed mold, a movable mold and a hot nozzle. The fixed mold and the movable mold form a forming cavity, the hot nozzle extends into the mold cavity, the injection material is injected into the forming cavity, and the injection molding part can be formed after cooling and taking out. After processing, the injection molding part forms an interior part.

[0004] However, the surface of the injection molding part formed by the injection mold in the above related technology has defects, which affects the appearance quality of the injection molding part. Utility model content

[0005] In view of this, the embodiment of the present application provides an injection mold and an injection molding part, which are used to solve the technical problem that the surface of the injection molding part formed by the injection mold in the above related technology has defects, which affects the appearance quality of the injection molding part.

[0006] In order to achieve the above purpose, the technical scheme of the embodiment of the present application is as follows:

[0007] The embodiment of the present application provides an injection mold, which comprises:

[0008] A fixed mold plate and a movable mold plate, the fixed mold plate and the movable mold plate jointly enclose a forming cavity, and the surface of the movable mold plate facing the forming cavity is used to form the appearance surface of the injection molding part;

[0009] A straight top mechanism, comprising a straight top block movably connected with the fixed mold plate, the straight top block and the fixed mold plate jointly enclose a first flow channel, the first flow channel comprises an input end and an output end opposite in the injection direction, and the output end is in communication with the forming cavity;

[0010] A hot nozzle, which is inserted into the fixed mold plate and in communication with the input end;

[0011] The first flow channel is arranged so that the injection material transported by the hot nozzle is transported into the forming cavity through the first flow channel.

[0012] The application provides an injection mold, which is characterized in that a straight ejector is movably arranged on a fixed mold plate, a first runner is formed between the straight ejector and the fixed mold plate, an output end of the first runner is communicated with a molding cavity between the fixed mold plate and a movable mold plate, a hot nozzle is inserted into the fixed mold plate, and the hot nozzle is communicated with an input end of the first runner.

[0013] In some embodiments of the application, the width of the first runner is less than the height of the molding cavity.

[0014] In some embodiments of the application, the ratio of the width of the first runner to the height of the molding cavity is greater than 0.1 and less than or equal to 0.4.

[0015] In some embodiments of the application, the first runner comprises:

[0016] a first sub-runner, which is arranged close to the molding cavity and communicated with the molding cavity at one end;

[0017] a second sub-runner, which is arranged on a side of the first runner away from the molding cavity, one end of the second sub-runner is communicated with the first sub-runner, and the other end of the second sub-runner is communicated with the hot nozzle;

[0018] The width of the first sub-runner is less than the height of the molding cavity.

[0019] In some embodiments of the application, the ratio of the width of the first sub-runner to the height of the molding cavity is greater than 0.1 and less than or equal to 0.4.

[0020] In some embodiments of the application, the width of the first sub-runner is less than the width of the second sub-runner.

[0021] In some embodiments of the application, the straight ejector further comprises a buffer part, which is arranged between the first sub-runner and the second sub-runner.

[0022] In some embodiments of the application, the fixed mold plate is provided with a mounting groove, which is used to communicate the inside of the molding cavity with the outside of the fixed mold plate.

[0023] The straight ejector is arranged in the mounting groove, a through groove is arranged on the outer surface of the straight ejector, and the through groove and the side wall of the mounting groove jointly form the first runner.

[0024] In some embodiments of the present application, the through groove comprises a first sub-through groove and a second sub-through groove;

[0025] The first sub-through groove is closer to the forming cavity than the second sub-through groove, the second sub-through groove communicates with the forming cavity through the first sub-through groove, and the hot nozzle communicates with the second sub-through groove;

[0026] The depth of the first sub-through groove is less than the depth of the second sub-through groove.

[0027] In some embodiments of the present application, the fixed mold plate has a relief groove, the groove opening of the relief groove faces the outside of the fixed mold plate, and the groove bottom of the relief groove communicates with the input end of the first flow channel;

[0028] The hot nozzle is installed in the relief groove towards the nozzle part of the fixed mold plate.

[0029] In some embodiments of the present application, the hot nozzle has a second flow channel inside, and the hot nozzle is used to inject the injection material into the first flow channel through the second flow channel.

[0030] In some embodiments of the present application, the straight ejection mechanism further comprises an ejector rod connected with the straight ejection block, and the ejector rod is used to push the straight ejection block to move.

[0031] In some embodiments of the present application, the injection mold further comprises a liquid cooling mechanism;

[0032] The straight ejection block is provided with a cooling flow channel for circulating flow of liquid cooling medium, and the liquid cooling mechanism and the cooling flow channel form a circulating loop to make the liquid cooling medium circulate in the liquid cooling mechanism and the straight ejection block.

[0033] The embodiments of the present application also provide an injection molded part prepared by using the injection mold as described above. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A structural schematic diagram of the injection mold provided by the embodiments of the present application is shown;

[0035] Figure 2 A sectional schematic diagram of the injection mold provided by the embodiments of the present application is shown;

[0036] Figure 3 Another sectional schematic diagram of the injection mold provided by the embodiments of the present application is shown;

[0037] Figure 4 A sectional schematic diagram of the injection mold provided by the embodiments of the present application is shown; Figure 3 A partial schematic diagram at A in FIG. 8 is shown;

[0038] Figure 5 A profile diagram of a first runner in an injection mold provided for the application embodiment is shown in the figure;

[0039] Figure 6 A structure diagram of a straight-ejecting mechanism in an injection mold provided for the application embodiment is shown in the figure.

[0040] Reference signs:

[0041] 100 - fixed mold plate;

[0042] 110 - mounting groove; 120 - avoiding groove;

[0043] 200 - movable mold plate;

[0044] 300 - molding cavity;

[0045] 400 - straight-ejecting mechanism;

[0046] 410 - straight-ejecting block; 420 - ejecting rod; 430 - guide sleeve; 440 - connecting piece;

[0047] 412 - through groove;

[0048] 4121 - first sub-through groove; 4122 - second sub-through groove;

[0049] 500 - first runner;

[0050] 510 - input end; 520 - output end; 530 - first sub-runner; 540 - second sub-runner;

[0051] 550 - buffer part;

[0052] 600 - hot nozzle;

[0053] 610 - second runner;

[0054] 700 - ejecting pin plate. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0056] In the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0057] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left" and "right" are defined relative to the orientation in which the components in the drawings are placed, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation in which the components in the drawings are placed.

[0058] In the embodiments of the present application, unless specifically defined and limited otherwise, the term "connection" should be understood in a broad sense, for example, the "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium.

[0059] In the embodiments of the present application, the term "comprising", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0060] In the embodiments of the present application, the word "exemplary" or "for example" is used to mean serving as an example, instance or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the word "exemplary" or "for example" is used to present related concepts in a specific manner.

[0061] The injection mold in the related art includes a fixed mold plate and a movable mold plate, a forming cavity is formed between the fixed mold plate and the movable mold plate, a hot nozzle directly extends into the forming cavity from the fixed mold plate side and communicates with the forming cavity, after an injection molded part is formed by injection molding, the appearance surface of the injection molded part faces the movable mold plate, the non-appearance surface faces the hot nozzle, and the hot nozzle directly abuts against the non-appearance surface of the injection molded part in the forming cavity. However, since the end of the hot nozzle abutting against the non-appearance surface of the injection molded part has a high temperature, and even can be conducted to the appearance surface of the injection molded part, the appearance surface will form defects after high temperature, such as local defects of white spots, black spots or deformation, thereby affecting the appearance quality of the injection molded part.

[0062] To solve the above problems, the embodiment of the present application provides an injection mold and an injection part. The injection mold is characterized in that a straight ejector block is movably arranged on a fixed mold plate, a first flow channel is formed between the straight ejector block and the fixed mold plate, an output end of the first flow channel is communicated with a molding cavity between the fixed mold plate and a movable mold plate, and a hot nozzle is inserted into the fixed mold plate and communicated with an input end of the first flow channel. The injection material flowing out of the hot nozzle is different from the prior art in which the injection material directly flows into the molding cavity. Instead, the injection material first flows into the first flow channel between the straight ejector block and the fixed mold plate, then flows through the buffer interval formed by the first flow channel, and finally flows into the molding cavity. In this way, the hot nozzle can be prevented from directly abutting and contacting the injection part in the molding cavity, and defects on the appearance surface of the injection part facing the movable mold plate can be avoided, thereby reducing or eliminating defects on the appearance surface of the injection part and improving the quality of the injection part.

[0063] The injection mold provided by the present application will be described below with reference to the accompanying drawings and in combination with specific embodiments.

[0064] With reference to Figures 1 to 4 The embodiment of the present application provides an injection mold. The injection mold can include a fixed mold plate 100, a movable mold plate 200, a straight ejector mechanism 400, and a hot nozzle 600.

[0065] The fixed mold plate 100 and the movable mold plate 200 jointly enclose a molding cavity 300. The surface of the movable mold plate 200 facing the molding cavity 300 is used to form the appearance surface of the injection part. The movable mold plate 200 can move relative to the fixed mold plate 100 to open the molding cavity 300 and take out the injection part after injection molding. The appearance surface of the injection part faces the movable mold plate 200, and the non-appearance surface of the injection part faces the fixed mold plate 100.

[0066] With reference to Figure 2 and Figure 4 The fixed mold plate 100 and the movable mold plate 200 are arranged along a first direction (for example, the Y direction in the figure). Figure 2 The first direction can be the height direction of the molding cavity 300.

[0067] The straight ejector mechanism 400 can include a straight ejector block 410 movably connected with the fixed mold plate 100. The straight ejector block 410 and the fixed mold plate 100 jointly enclose a first flow channel 500. The first flow channel 500 can include an input end 510 and an output end 520 opposite in the injection direction. The output end 520 is communicated with the molding cavity 300. The straight ejector block 410 can be used to eject the injection part after injection molding from the fixed mold plate 100 to separate the injection part from the fixed mold plate 100.

[0068] The straight ejector block 410 can be arranged in the movable die plate 200, and a surface of the straight ejector block 410 towards the movable die plate 200 can jointly form the forming cavity 300 with the fixed die plate 100 and the movable die plate 200. The straight ejector block 410 has a gap with the fixed die plate 100, and the gap is used to form the first runner 500.

[0069] The hot nozzle 600 is inserted into the fixed die plate 100 and communicates with the input end 510 of the first runner 500. By inserting the hot nozzle 600 into the fixed die plate 100, the injection material flowing out of the hot nozzle 600 can flow into the forming cavity 300 from the side of the fixed die plate 100, so that the hot nozzle 600 can be in contact with the non-appearance surface of the molded injection part, which can reduce the damage of the hot nozzle 600 to the appearance surface of the injection part, and can avoid the hot nozzle 600 to cause direct defects to the appearance surface of the injection part, and improve the appearance quality of the injection part.

[0070] The first runner 500 is arranged so that the injection material delivered by the hot nozzle 600 can be delivered into the forming cavity 300 through the first runner 500.

[0071] The injection mold provided by the present application can be arranged by movably arranging the straight ejector block 410 in the fixed die plate 100, and forming the first runner 500 between the straight ejector block 410 and the fixed die plate 100. The output end 520 of the first runner 500 communicates with the forming cavity 300 between the fixed die plate 100 and the movable die plate 200. The hot nozzle 600 is inserted into the fixed die plate 100, and the hot nozzle 600 communicates with the input end 510 of the first runner 500. The injection material flowing out of the hot nozzle 600 in the present application is different from the way of directly flowing into the forming cavity 300 in the prior art. Instead, the injection material first flows into the first runner 500 between the straight ejector block 410 and the fixed die plate 100, then flows through the buffer interval formed by the first runner 500, and finally flows into the forming cavity 300. In this way, the hot nozzle 600 can avoid directly abutting and contacting the injection part in the forming cavity 300, and can avoid defects on the appearance surface of the injection part towards the movable die plate 200 caused by direct abutting and contacting, so as to reduce or eliminate defects on the appearance surface of the injection part, and improve the quality of the injection part.

[0072] In some embodiments of the present application, referring to Figure 4 and Figure 5 , the width (such as h1 in Figure 5 ) of the first runner 500 is less than the height (such as h2 in Figure 4 ) of the forming cavity 300.

[0073] In practice, after the hot nozzle 600 completes the injection process, in addition to the molding cavity 300 being filled with injection material, the first runner 500 is also filled with injection material. The injection structure formed by the cooling of the injection material in the first runner 500 will connect with the injection molded part in the molding cavity 300. If the contact area between the injection structure in the first runner 500 and the surface of the injection molded part is too large, excessive high temperature from the injection structure will be transferred to the injection molded part, causing defects on the appearance surface of the injection molded part due to high temperature.

[0074] In this way, by making the width of the first flow channel 500 smaller than the height of the molding cavity 300, the width of the contact area between the injection structure and the injection molded part in the first flow channel 500 is smaller than the thickness of the injection molded part (approximately equal to the height h2 of the molding cavity 300). This reduces the heat transfer from the injection structure to the injection molded part in the molding cavity 300, thereby reducing the impact of the injection structure in the first flow channel 500 on the appearance of the injection molded part and further improving the quality of the appearance of the injection molded part.

[0075] In some embodiments, the width of the first flow channel 500 (e.g. Figure 5 The height of the middle h1) and the molding cavity 300 (e.g. Figure 4 The ratio of the width h1 of the first flow channel 500 to the height h2 of the molding cavity 300 is greater than 0.1 and less than or equal to 0.4. For example, the ratio of the width h1 of the first flow channel 500 to the height h2 of the molding cavity 300 can be one of 0.1, 0.15, 0.17, 0.21, 0.28, 0.31, 0.33, 0.35, and 0.39. Alternatively, the ratio of the width h1 of the first flow channel 500 to the height h2 of the molding cavity 300 can be any value within the range of greater than or equal to 0.1 and less than or equal to 0.4.

[0076] By ensuring that the ratio of the width h1 of the first runner 500 to the height h2 of the molding cavity 300 is greater than 0.1, it is possible to avoid the flow rate of the injection molding material within the first runner 500 being affected by its excessive narrowness, or to prevent the injection molding material from becoming clogged within the first runner 500 and affecting the injection molding process. Conversely, by ensuring that the ratio of the width h1 of the first runner 500 to the height h2 of the molding cavity 300 is less than or equal to 0.4, it is possible to prevent excessive heat transfer of the injection molding material within the first runner 500 to the injection molded part within the molding cavity 300 due to its excessive width. This, in turn, prevents surface defects in the injection molded part caused by excessively high temperatures of the injection molding material within the first runner 500.

[0077] In some embodiments, the width of the entire first flow channel 500 can be less than the height of the molding cavity 300. Alternatively, the width of part of the first flow channel 500 can be less than the height of the molding cavity 300, for example, the width of the part of the first flow channel 500 close to the molding cavity 300 can be less than the height of the molding cavity 300, and the width of the part of the first flow channel 500 close to the hot nozzle 600 can be greater than or equal to the height of the molding cavity 300.

[0078] In some embodiments of the present application, with reference to Figure 4 and Figure 5 , the first flow channel 500 can include a first sub-flow channel 530 and a second sub-flow channel 540 in communication with each other.

[0079] The first sub-flow channel 530 is arranged close to the molding cavity 300 and has one end in communication with the molding cavity 300. The second sub-flow channel 540 is arranged on the side of the first flow channel 500 away from the molding cavity 300, one end of the second sub-flow channel 540 is in communication with the first sub-flow channel 530, and the other end of the second sub-flow channel 540 is in communication with the hot nozzle 600. The width (such as h11 in Figure 5 ) of the first sub-flow channel 530 is less than the height (such as h2 in Figure 4 ) of the molding cavity 300. The injection material in the hot nozzle 600 is first injected into the second sub-flow channel 540, then flows into the first sub-flow channel 530 through the second sub-flow channel 540, and finally flows into the molding cavity 300 through the first sub-flow channel 530.

[0080] In this way, by including the first sub-flow channel 530 and the second sub-flow channel 540 and making the width h11 of the first sub-flow channel 530 less than the height h2 of the molding cavity 300, the first flow channel 500 can avoid affecting the injection of the injection material from the hot nozzle 600 into the first flow channel 500 due to the too small width of the entire first flow channel 500, avoid the injection material being blocked in the first flow channel 500, and avoid adversely affecting the injection process.

[0081] In some embodiments of the present application, with reference to Figure 4 and Figure 5 , the ratio of the width h11 of the first sub-flow channel 530 to the height h2 of the molding cavity 300 is greater than 0.1 and less than or equal to 0.4, for example, the ratio of the width h11 of the first sub-flow channel 530 to the height h2 of the molding cavity 300 can be one of 0.1, 0.15, 0.17, 0.21, 0.28, 0.31, 0.33, 0.35, and 0.39. Alternatively, the ratio of the width h11 of the first sub-flow channel 530 to the height h2 of the molding cavity 300 can be any value within the range of greater than or equal to 0.1 and less than or equal to 0.4.

[0082] In some embodiments of the present application, with reference to Figure 5The width of the first sub-flow channel 530 is less than the width of the second sub-flow channel 540.

[0083] In this way, the width of the second sub-flow channel 540 is greater than the width of the first sub-flow channel 530, so that the injection material injected by the hot nozzle 600 into the second sub-flow channel 540 can be prevented from being blocked in the first flow channel 500 due to the narrowness of the second sub-flow channel 540, thereby facilitating the flow of the injection material in the first flow channel 500 and improving the injection efficiency.

[0084] In some examples, the width of the second sub-flow channel 540 can be greater than the height of the molding cavity 300, so as to further improve the flow of the injection material in the first flow channel 500.

[0085] In some embodiments of the present application, with reference to Figure 4 and Figure 5 The straight top block 410 can further include a buffer portion 550 located between the first sub-flow channel 530 and the second sub-flow channel 540. The buffer portion 550 has a buffer surface, and most of the injection material injected by the hot nozzle 600 into the second sub-flow channel 540 can first impact on the buffer surface of the buffer portion 550, and then slowly flow into the first sub-flow channel 530 and further flow into the molding cavity 300.

[0086] In this way, by arranging the buffer portion 550 between the first sub-flow channel 530 and the second sub-flow channel 540, most of the injection material injected by the hot nozzle 600 into the second sub-flow channel 540 can flow onto the buffer surface of the buffer portion 550, and the injection material in the second sub-flow channel 540 with a slowed flow rate can then flow into the first sub-flow channel 530, and the injection material with a further slowed flow rate can flow into the molding cavity 300 through the first sub-flow channel 530, so that the injection material can be prevented from flowing unevenly in the molding cavity 300 due to the too fast flow rate of the injection material, and the surface of the injection part can be prevented from forming defects such as weld marks due to uneven flow.

[0087] In some embodiments of the present application, with reference to Figure 2 and Figure 4 The fixed mold plate 100 has a mounting groove 110 for communicating the inside of the molding cavity 300 with the outside of the fixed mold plate 100. The straight top block 410 is arranged in the mounting groove 110, and the outer surface of the straight top block 410 is provided with a through groove 412, which together with the side wall of the mounting groove 110 forms the first flow channel 500. The through groove 412 on the straight top block 410 can extend along the height direction of the molding cavity 300. The surface of the inner side wall of the mounting groove 110 corresponding to the through groove 412 can be a flat surface.

[0088] When the straight top block 410 is installed in the installation groove 110 of the fixed mold plate 100, the notch of the through groove 412 on the straight top block 410 can face the inner side wall on the upper side of the installation groove 110, so that the through groove 412 and the inner side wall of the installation groove 110 jointly form the first flow channel 500.

[0089] In this way, by making the through groove 412 on the straight top block 410 jointly form the first flow channel 500 with the inner wall of the installation groove 110, the through groove 412 on the straight top block 410 is of an open structure, so that it is convenient to clean the residual injection material in the through groove 412 after injection molding, and the maintenance of the through groove 412 is facilitated, avoiding the influence of the residual injection material in the through groove 412 on the reuse of the injection mold, and improving the practicability of the injection mold.

[0090] In some embodiments of the present application, with reference to Figure 4 and Figure 6 , the through groove 412 can include a first sub-through groove 4121 and a second sub-through groove 4122, the first sub-through groove 4121 is closer to the forming cavity 300 than the second sub-through groove 4122, the second sub-through groove 4122 communicates with the forming cavity 300 through the first sub-through groove 4121, the hot nozzle 600 communicates with the second sub-through groove 4122, and the depth of the first sub-through groove 4121 is less than the depth of the second sub-through groove 4122.

[0091] In this way, when the through groove 412 and the inner side wall of the installation groove 110 form the first flow channel 500, the first flow channel 500 can form two sub-flow channels with different widths.

[0092] In some embodiments, the first sub-through groove 4121 and the inner side wall of the installation groove 110 can jointly form a first sub-flow channel 530, the second sub-through groove 4122 and the inner side wall of the installation groove 110 can jointly form a second sub-flow channel 540, and the first sub-flow channel 530 and the second sub-flow channel 540 communicate with each other. Since the depth of the first sub-through groove 4121 is less than the depth of the second sub-through groove 4122, the width of the first sub-flow channel 530 corresponding to the first sub-through groove 4121 is correspondingly less than the width of the second sub-flow channel 540 corresponding to the second sub-through groove 4122.

[0093] In this way, the width of the second sub-flow channel 540 can be greater than the width of the first sub-flow channel 530, so that the injection material injected by the hot nozzle 600 into the second sub-flow channel 540 can be prevented from being blocked in the first flow channel 500 due to the narrowness of the second sub-flow channel 540, thereby facilitating the improvement of the flowability of the injection material in the first flow channel 500 and improving the injection efficiency.

[0094] In some examples, the width of the second sub-flow channel 540 can be greater than the height of the forming cavity 300, so as to further improve the flowability of the injection material in the first flow channel 500.

[0095] In some embodiments, the depth of the first through slot 412 can also be less than the height of the forming cavity 300, for example, the ratio of the depth of the first through slot 412 to the height of the forming cavity 300 can be greater than or equal to 0.1 and less than or equal to 0.4.

[0096] In some embodiments of the present application, referring to Figure 4 , the fixed mold plate 100 is provided with a clearance groove 120, the groove opening of the clearance groove 120 faces the outside of the fixed mold plate 100, and the groove bottom of the clearance groove 120 is in communication with the input end 510 of the first flow channel 500. The nozzle 600 of the hot nozzle 600 is mounted in the clearance groove 120 towards the nozzle of the fixed mold plate 100.

[0097] In this way, by providing the clearance groove 120 on the fixed mold plate 100, the groove bottom of the clearance groove 120 is in communication with the input end 510 of the first flow channel 500, the hot nozzle 600 can be deep into the clearance groove 120, and the nozzle of the hot nozzle 600 can be abutted to the input end 510 of the first flow channel 500 towards the nozzle of the fixed mold plate 100, which facilitates the injection of the injection material in the hot nozzle 600 into the first flow channel 500 and avoids the overflow of the injection material.

[0098] In addition, by making the nozzle of the hot nozzle 600 extend into the clearance groove 120, the hot nozzle 600 can be easily docked with the input end 510 of the first flow channel 500 on the fixed mold plate 100, which facilitates the accurate alignment of the hot nozzle 600 with the first flow channel 500 and improves the assembly efficiency of the injection mold.

[0099] In some embodiments of the present application, referring to Figures 2 to 4 , the hot nozzle 600 has a second flow channel 610 in the inside of the hot nozzle 600, and the hot nozzle 600 is used to inject the injection material into the first flow channel 500 through the second flow channel 610.

[0100] In this way, by providing the second flow channel 610 in the inside of the hot nozzle 600, the injection material can flow into the first flow channel 500 through the second flow channel 610, which ensures that the injection material is not contaminated by impurities when flowing into the first flow channel 500 from the hot nozzle 600, and improves the practicability of the injection mold.

[0101] In some embodiments of the present application, referring to Figure 2 and Figure 6 , the straight ejection mechanism 400 can further include an ejector rod 420, the ejector rod 420 is connected with the straight ejector block 410, and the ejector rod 420 is used to push the straight ejector block 410 to move. The ejector rod 420 can pass through the fixed mold plate 100 and be connected with the straight ejector block 410, and the ejector rod 420 can drive the straight ejector block 410 to move along the height direction of the forming cavity 300 relative to the fixed mold plate 100.

[0102] Referring to Figure 6In some examples, there may be two push rods 420, one end of which is fixedly connected to the straight push block 410. The two push rods 420 are spaced apart, and the push rods 420 can drive the straight push block 410 to move toward the moving template 200.

[0103] Reference Figure 6 In some embodiments, the direct ejector mechanism 400 further includes a guide sleeve 430, which can be fitted onto the fixed template 100. By setting the guide sleeve 430, the ejector rod 420 can be guided to move along the height direction of the molding cavity 300, reducing the probability of the ejector rod 420 deviating during movement, improving the movement stability of the direct ejector block 410 and the ejector rod 420, as well as the working stability of the direct ejector mechanism 400.

[0104] Reference Figure 6 In some examples, the injection mold may also include an ejector plate 700 and a drive (not shown in the figure), the ejector plate 700 being located on the side of the fixed mold plate 100 facing away from the moving mold plate 200, and the hot nozzle 600 being able to pass through the ejector plate 700 and abut against the first flow channel 500 at the bottom of the relief groove 120.

[0105] The driving component is connected to the ejector plate 700, and the ejector plate 700 is connected to the end of the ejector rod 420 away from the straight ejector block 410. The ejector plate 700 and the ejector rod 420 can be fixedly connected. The ejector plate 700 can be connected to the driving component. Under the drive of the driving component, the ejector plate 700 drives the ejector rod 420 to move along the height direction of the molding cavity 300 (e.g., Figure 3 and Figure 6 Y direction in ).

[0106] Reference Figure 2 , Figure 3 and Figure 6 In some examples, the ejector plate 700 can be connected to the ejector rod 420 via a connector 440, for example, the connector 440 can be a locking screw. The end of the ejector rod 420 away from the straight ejector block 410 can be detachably connected to the ejector plate 700 via a locking screw. This facilitates the disassembly and maintenance of the ejector rod 420 and improves the ease of use of the straight ejector mechanism 400.

[0107] In some embodiments of this application, reference is made to Figures 1 to 3 The injection mold may also include a liquid cooling mechanism (not shown in the figure). The ejector block 410 is provided with a cooling channel (not shown in the figure) for the circulation of liquid cooling medium. The liquid cooling mechanism and the cooling channel form a circulation loop so that the liquid cooling medium circulates within the liquid cooling mechanism and the ejector block 410.

[0108] In this way, the injection mold is provided with the liquid cooling mechanism, and the cooling flow channel is arranged in the straight ejecting block 410 to enable the cooling mechanism to deliver the liquid cooling medium to the cooling flow channel in the straight ejecting block 410. During circulation of the liquid cooling medium in the cooling flow channel, the heat of the injection material in the first flow channel 500 can be taken away to the straight ejecting block 410, so that the injection material in the first flow channel 500 can be cooled.

[0109] In some embodiments, the liquid cooling flow channel in the straight ejecting block 410 can be provided with a plurality of liquid cooling flow channels. By providing a plurality of liquid cooling flow channels, the contact area of the straight ejecting block 410 with the cooling medium can be increased, and the heat dissipation effect can be improved.

[0110] The injection mold provided in the embodiments of the present application can be used to manufacture an injection part. The injection part can be used as an interior trim part of a vehicle to decorate the interior of the vehicle.

[0111] In this way, by using the injection mold provided above to manufacture the injection part, the appearance quality of the injection part can be improved, so that the appearance quality of the interior trim part can be further improved, and the appearance quality of the interior of the vehicle using the interior trim part can be improved.

[0112] In some embodiments, the vehicle can be a fuel vehicle, or the vehicle can also be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range extended electric vehicle (REEV), a hybrid electric vehicle (HEV), a fuel cell electric vehicle, or any vehicle with a battery.

[0113] The serial numbers of the embodiments of the present application described above are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. An injection mold, characterized in that, include: A fixed template (100) and a movable template (200) are provided, wherein the fixed template (100) and the movable template (200) together form a molding cavity (300), and the surface of the movable template (200) facing the molding cavity (300) is used to form the appearance surface of the injection molded part; The direct ejection mechanism (400) includes a direct ejection block (410) movably connected to the fixed template (100). The direct ejection block (410) and the fixed template (100) together form a first flow channel (500). The first flow channel (500) includes an input end (510) and an output end (520) opposite to each other along the injection direction. The output end (520) is connected to the molding cavity (300). A hot nozzle (600) is inserted into the fixed template (100) and communicates with the input end (510); The first flow channel (500) is configured to allow the injection molding material delivered by the hot nozzle (600) to be delivered through the first flow channel (500) into the molding cavity (300).

2. The injection mold according to claim 1, characterized in that, The width of the first flow channel (500) is smaller than the height of the molding cavity (300); And / or, the ratio of the width of the first flow channel (500) to the height of the molding cavity (300) is greater than 0.1 and less than or equal to 0.

4.

3. The injection mold according to claim 1, characterized in that, The first flow channel (500) includes: The first sub-channel (530) is disposed near the molding cavity (300), and one end is connected to the molding cavity (300); The second sub-channel (540) is located on the side of the first channel (500) away from the molding cavity (300). One end of the second sub-channel (540) is connected to the first sub-channel (530), and the other end of the second sub-channel (540) is connected to the hot nozzle (600). The width of the first sub-channel (530) is smaller than the height of the molding cavity (300).

4. The injection mold according to claim 3, characterized in that, The ratio of the width of the first sub-channel (530) to the height of the molding cavity (300) is greater than 0.1 and less than or equal to 0.

4.

5. The injection mold according to claim 3, characterized in that, The width of the first sub-channel (530) is smaller than the width of the second sub-channel (540).

6. The injection mold according to claim 3 or 4, characterized in that, The direct-acting block (410) further includes a buffer section (550) located between the first sub-channel (530) and the second sub-channel (540).

7. The injection mold according to claim 1, characterized in that, The fixed template (100) has a mounting groove (110) for communicating the interior of the molding cavity (300) with the exterior of the fixed template (100); The straight top block (410) is disposed in the mounting groove (110), and a through groove (412) is provided on the outer surface of the straight top block (410). The through groove (412) and the side wall of the mounting groove (110) together form the first flow channel (500).

8. The injection mold according to claim 7, characterized in that, The through slot (412) includes a first sub-through slot (4121) and a second sub-through slot (4122); The first sub-channel (4121) is closer to the molding cavity (300) than the second sub-channel (4122), the second sub-channel (4122) is connected to the molding cavity (300) through the first sub-channel (4121), and the hot nozzle (600) is connected to the second sub-channel (4122). The depth of the first sub-channel (4121) is less than the depth of the second sub-channel (4122).

9. The injection mold according to claim 1, characterized in that, The fixed template (100) has a clearance groove (120), the opening of the clearance groove (120) faces the outside of the fixed template (100), and the bottom of the clearance groove (120) is connected to the input end (510) of the first flow channel (500). The nozzle (600) facing the fixed template (100) is installed in the clearance groove (120).

10. An injection molded part, characterized in that, The injection molded part is prepared using an injection mold as described in any one of claims 1 to 9.

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