Injection molds and production line

Abstract

This application relates to the field of mold structure technology and discloses an injection mold and production line body, including a first mold core with a first surface. The first surface is provided with a first product-shaped surface and a through-hole, the through-hole being located inside the first product-shaped surface. The first product-shaped surface is provided with a plurality of injection holes. The through-hole is provided with a first injection groove. A second injection groove is provided at a position on the first surface outside the first product-shaped surface. A first connecting channel is provided inside the first mold core, the first connecting channel connecting the first injection groove and the second injection groove. At least one injection hole near the first injection groove is connected to the first injection groove, and at least one injection hole near the second injection groove is connected to the second injection groove. This is to solve or improve the problems of unstable injection pressure of the injection mold, which affects product quality and excessive waste.

Description

Technical Field

[0001] This application relates to the field of mold structure technology, specifically to an injection mold and production line. Background Technology

[0002] In related technologies, plastic parts can be installed as decorative parts on the decorative parts of vehicles, instruments and other equipment to decorate the appearance of the equipment. The plastic parts are made by injection molding using injection molds.

[0003] Plastic parts may have large holes. During injection molding, a sliding block needs to be set on the moving mold to intersect with the fixed mold to form a through hole. Due to the presence of the sliding block, the flow channel between the injection hole and the injection nozzle is lengthened, which will cause unstable injection pressure, affect product quality, and cause more waste. Utility Model Content

[0004] This application provides an injection mold and production line to solve or improve the problems of unstable injection pressure in injection molds, which affects product quality and results in excessive waste.

[0005] In a first aspect, this application provides an injection mold, comprising: a first mold core having a first surface, wherein the first surface is provided with a first product-shaped surface and a through-hole, the through-hole being located within the first product-shaped surface, and the first product-shaped surface being provided with a plurality of injection holes; the through-hole being provided with a first injection groove, and a second injection groove being provided at a portion of the first surface located outside the first product-shaped surface; a first connecting channel being provided within the first mold core, the first connecting channel connecting the first injection groove and the second injection groove; at least one injection hole near the first injection groove communicating with the first injection groove, and at least one injection hole near the second injection groove communicating with the second injection groove.

[0006] In one optional embodiment, the mold core is further provided with a first ejector pin component, the first ejector pin hole is connected to the first injection groove, and the first ejector pin component is slidably disposed in the first ejector pin hole; and / or, the mold core is further provided with a second ejector pin component, the first mold core is provided with a second ejector pin hole, the second ejector pin hole is connected to the second injection groove, and the second ejector pin component is slidably disposed in the second ejector pin hole.

[0007] In one alternative implementation, the first connecting channel includes a first segment and a second segment that are connected, with the first segment and the second segment being intersected.

[0008] In one alternative implementation, the cross-section of the first segment gradually decreases along the direction of extension of the first segment, closer to the second segment; and / or, the cross-section of the second segment gradually decreases along the direction of extension of the second segment, closer to the first segment.

[0009] In one optional embodiment, a second connecting channel is provided on the first mold core, and the injection hole communicating with the second injection groove is connected to the second injection groove through the second connecting channel; wherein, the cross-section of the second connecting channel gradually decreases along the direction close to the injection hole.

[0010] In one alternative implementation, the second connecting channel is arc-shaped.

[0011] In one optional embodiment, the first mold core is provided with a third connecting channel, the third connecting channel including a third segment and a fourth segment that are connected, an injection hole that is connected to the first injection groove is connected to the fourth segment, the third segment is connected to the second injection groove, and the third segment and the fourth segment are arranged intersectingly.

[0012] In one alternative implementation, the cross-section of the third segment gradually decreases along the direction of extension of the third segment, closer to the fourth segment; and / or, the cross-section of the fourth segment gradually decreases along the direction of extension of the fourth segment, closer to the third segment.

[0013] In one optional embodiment, it further includes a second mold core and a sliding block. The second mold core has a second surface, which is disposed opposite to the first surface. The second surface has a second product-shaped surface. A slide is provided on the first mold core, which passes through the first product-shaped surface. The sliding block slides in conjunction with the slide. A main nozzle is provided on the second mold core. In the injection molding state, the first surface is in contact with the second surface, the first product surface and the second product surface form a product cavity, and the main nozzle is connected to the second injection groove.

[0014] Secondly, this application also provides a production line body, including: the above-mentioned injection mold.

[0015] Beneficial effects: This application provides an injection mold and production line body, which adopts a first injection groove on the penetration part of the first mold core. The first injection groove is connected to the injection hole near the first injection groove. The first injection groove is connected to a second injection groove located on the outer side of the first product surface through a first connecting channel located in the first mold core. This makes the path between the injection hole connected to the first injection groove and the second injection groove nearly straight, eliminating the need for an arc-shaped detour on the outer side of the first product surface. This reduces the material supply channel of the injection hole connected to the first injection groove, improves or solves the problem of unstable mold injection pressure affecting product quality; and because the material supply channel is shortened, the generation of waste material can be reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an injection mold in related technologies; Figure 2 This is a schematic diagram of the structure of an injection mold according to an embodiment of this application; Figure 3 This is a schematic diagram of another state of an injection mold according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an injection mold in another state according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the third connecting channel of an injection mold according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 1. First mold core; 2. First ejector pin assembly; 3. Second ejector pin assembly; 4. Second mold core; 5. Sliding block; 6. Product; 7. Runner; 11. First surface; 111. First product-shaped surface; 112. Perforation part; 12. Injection hole; 13. First injection groove; 14. Second injection groove; 15. First connecting channel; 16. First ejector pin hole; 17. Second ejector pin hole; 18. Second connecting channel; 19. Third connecting channel; 151. First paragraph; 152. Second paragraph; 191. Third paragraph; 192. Fourth paragraph; 41. Second side; 411. Second product shape surface; 42. Slide; 43. Main nozzle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In related technologies, plastic parts can be installed as decorative parts on the decorative parts of vehicles, instruments and other equipment to decorate the appearance of the equipment. The plastic parts are made by injection molding using injection molds.

[0022] Plastic parts may have large holes, requiring the use of sliding blocks on the moving mold to create through holes during injection molding. However, the presence of these sliding blocks prevents the placement of injection channels, resulting in an increased flow path (7) between the injection hole and the nozzle. Figure 1 As shown in the figure, this causes problems such as unstable injection pressure and excessive waste.

[0023] Therefore, this application provides an injection mold and production line to solve or improve the problems of unstable injection pressure and excessive waste in injection molds.

[0024] The following is combined Figures 2 to 5 This describes an embodiment of the present application.

[0025] According to embodiments of this application, in one aspect, an injection mold is provided, such as... Figure 2 As shown, it includes a first mold core 1 and a second mold core 4, and the specific scheme is as follows.

[0026] like Figure 4 As shown, the first mold core 1 is a metal mold core, such as a mold core made of steel or other high-strength materials; the first mold core 1 has a first surface 11, on which a first product-shaped surface 111 and a through-hole 112 are provided, the through-hole 112 is located inside the first product-shaped surface 111, and a plurality of injection holes 12 are provided on the first product-shaped surface 111.

[0027] It is understandable that the face of the first product type 6 is part of the cavity in the mold, and is integrally formed with the main body of the first mold core 1 through milling process.

[0028] It is also understood that the penetration part 112 is located inside the first product face 111, that is, the penetration part 112 is located inside the first product 6 face, to contact the position block 5, to form a through hole in the product 6.

[0029] like Figure 4 As shown, a first injection groove 13 is provided on the through part 112, and a second injection groove 14 is provided on the part of the first surface 11 located outside the first product surface 111. A first connecting channel 15 is provided in the first mold core 1, and the first connecting channel 15 connects the first injection groove 13 and the second injection groove 14. Specifically, the cross-section of the first injection groove 13 and the second injection groove 14 can be any shape such as semi-circle or trapezoid, preferably semi-circle.

[0030] At least one injection hole 12 near the first injection groove 13 is connected to the first injection groove 13, and at least one injection hole 12 near the second injection groove 14 is connected to the second injection groove 14.

[0031] It is understandable that among the multiple injection holes 12, a portion is close to the first injection groove 13 and another portion is close to the second injection groove 14. The portion of injection holes 12 close to the first injection groove 13 is connected to the first injection groove 13 to deliver the molten material of product 6 to the mold cavity; while the portion of injection holes 12 close to the second injection groove 14 is connected to the second injection groove 14 to deliver the molten material of product 6 to the mold cavity.

[0032] like Figure 3 As shown, the second mold core 4 is a metal mold core, such as a mold core made of steel or other high-strength materials; the second mold core 4 has a second surface 41, which is opposite to the first surface 11, and the second surface 41 has a second product-shaped surface 411. The first mold core 1 is provided with a slide 42, which passes through the first product-shaped surface 111. The second mold core 4 is provided with a main nozzle 43.

[0033] It is understandable that the face of the second product type 6 is part of the cavity in the mold, and is integrally formed with the main body of the second mold core 4 through a milling process.

[0034] The sliding block 5 is a metal block, such as a block of steel, or a block of other materials; the sliding block 5 is in sliding fit with the slide rail 42.

[0035] like Figure 2 As shown, in the injection molding state, the first surface 11 and the second surface 41 are in contact, and the first product shape surface 111 and the second product shape surface 411 form a product 6 cavity. The product 6 cavity can form the product 6 after cooling by injecting molten raw material; the main nozzle 43 is connected to the second injection groove 14.

[0036] In specific use, product 6 takes an oval plastic part with a through hole as an example. The first mold core 1 is installed on the injection molding equipment, and the second mold core 4 is installed on the telescopic part of the injection molding equipment. The telescopic part drives the second mold to reciprocate so as to realize the opening and closing of the second mold core 4 and the first mold core 1.

[0037] The main nozzle 43 on the second mold core 4 is connected to the injection pipeline.

[0038] like Figure 2As shown, after the first mold core 1 and the second mold core 4 are closed, the sliding block 5 moves closer to and contacts the contact part 112 during sliding. Then, the first product surface 111 and the second product surface 411 form the cavity of product 6. The controller controls the injection pipeline to inject material. The molten material enters the second injection tank 14. Then, part of the material enters the cavity of product 6 through the injection hole 12 connected to the second injection tank 14. Another part of the material enters the first injection tank 13 through the first connecting channel 15, and then enters other parts of the cavity of product 6 through the injection hole 12 connected to the first injection tank 13, thus completing the injection molding of product 6.

[0039] like Figure 3 As shown, after product 6 has cooled, the sliding block 5 separates from the contact part 112, and then the second mold core 4 separates from the first mold core 1 under the drive of the telescopic part of the injection molding equipment, as shown. Figure 4 As shown, the waste material in the first glue injection tank 13, the second glue injection tank 14 and the first connecting channel 15 is then directly removed. It should be noted that the waste material in the first connecting channel 15 breaks under the pull of the waste material in the first glue injection tank 13 and the waste material in the second glue injection tank 14, and is removed along with the waste material in the first glue injection tank 13 and the waste material in the second glue injection tank 14, respectively.

[0040] In this embodiment, such as Figures 2 to 4 As shown, a first injection groove 13 is provided on the through-hole 112 of the first mold core 1. The first injection groove 13 is connected to the injection hole 12 near the first injection groove 13. The first injection groove 13 is connected to the second injection groove 14 located outside the first product surface 111 through the first connecting channel 15 located inside the first mold core 1. This makes the path connecting the injection hole 12 connected to the first injection groove 13 and the second injection groove 14 nearly straight, eliminating the need for an arc-shaped detour outside the first product surface 111. This reduces the material supply channel of the injection hole 12 connected to the first injection groove 13, improves or solves the problem of unstable mold injection pressure affecting the quality of the product 6. Furthermore, the shortened material supply channel reduces the generation of waste.

[0041] In one embodiment, such as Figure 3 As shown, the injection mold also includes a first ejector pin component 2 and a second ejector pin component 3. Specifically, the first ejector pin component 2 and the second ejector pin component 3 are both existing products 6, and their structures can be the same. A first ejector pin hole 16 is provided on the first mold core 1. The first ejector pin hole 16 is connected to the first injection groove 13. The first ejector pin component 2 is slidably disposed in the first ejector pin hole 16. Specifically, the first ejector pin hole 16 extends in a direction perpendicular to the first surface 11 and is connected to the first injection groove 13.

[0042] like Figure 3As shown, a second ejector hole 17 is provided on the first mold core 1. The second ejector hole 17 is connected to the second injection groove 14. A second ejector component 3 is slidably disposed in the second ejector hole 17. Specifically, the second ejector hole 17 extends in a direction perpendicular to the first surface 11 and is connected to the second injection groove 14.

[0043] Specifically, the cross-sections of the first pin hole 16 and the second pin hole 17 can be any shape such as a circle or a rectangle, but are preferably circular.

[0044] In this embodiment, such as Figure 3 As shown, by setting a first ejector component 2 and a second ejector component 3 in the first mold core 1, after the first mold core 1 and the second mold core 4 are opened, the first ejector component 2 and the second ejector component 3 can directly eject the waste material in the first injection groove 13, the second injection groove 14 and the first connecting channel 15, reducing the amount of manual work.

[0045] In one embodiment, such as Figure 2 As shown, the first connecting channel 15 includes a first segment 151 and a second segment 152 that are connected. The first segment 151 and the second segment 152 are intersected. Specifically, the angle between the first segment 151 and the second segment 152 is in the range of 45° to 120°. The angle between the first segment 151 and the second segment 152 can be any one value or any two values ​​of 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115° and 120°.

[0046] In this embodiment, such as Figure 2 As shown, the first connecting channel 15 includes a first segment 151 and a second segment 152 that are connected. The first segment 151 and the second segment 152 are arranged to cross each other, which facilitates the processing of the first connecting channel 15.

[0047] In one embodiment, such as Figure 4 As shown, along the direction close to the second segment 152, the cross-section of the first segment 151 gradually decreases along the extension direction of the first segment 151; along the direction close to the first segment 151, the cross-section of the second segment (152) gradually decreases along the extension direction of the second segment 152. Specifically, the cross-section of the first segment 151 gradually decreases from one end close to the first glue injection groove 13 to one end away from the first glue injection groove 13; the cross-section of the second segment 152 gradually decreases from one end close to the second glue injection groove 14 to one end away from the second glue injection groove 14.

[0048] In this embodiment, such as Figure 4As shown, the cross-section of the first segment 151 gradually decreases along the direction close to the second segment 152; the cross-section of the second segment 152 gradually decreases along the direction close to the first segment 151. This arrangement facilitates disconnection at the connection between the first segment 151 and the second segment 152, improves the stability of waste removal, avoids abnormal breakage, prevents waste from being removed in time, and avoids affecting the production cycle.

[0049] In one embodiment, such as Figure 2 As shown, a second connecting channel 18 is provided on the first mold core 1, and the injection hole 12, which is connected to the second injection groove 14, is connected to the second injection groove 14 through the second connecting channel 18; wherein, the cross-section of the second connecting channel 18 gradually decreases along the direction close to the injection hole 12.

[0050] In this embodiment, such as Figure 2 As shown, the glue injection hole 12, which is connected to the second glue injection tank 14, is connected to the second glue injection tank 14 through the second connecting channel 18. The cross-section of the second connecting channel 18 is gradually reduced along the direction close to the glue injection hole 12. During the process of waste discharge in the second connecting channel 18, the waste in the second connecting channel 18 breaks at the glue injection hole 12 and can be easily removed together with the waste in the first glue injection tank 13 under the pull.

[0051] In one embodiment, such as Figure 2 As shown, the second connecting channel 18 is arc-shaped, which can reduce the pulling resistance of the waste material in the second connecting channel 18.

[0052] In one embodiment, such as Figure 5 As shown, the first mold core 1 is provided with a third connecting channel 19, which includes a third segment 191 and a fourth segment 192 that are connected. The injection hole 12, which is connected to the first injection groove 13, is connected to the fourth segment 192. The third segment 191 is connected to the second injection groove 14. The third segment 191 and the fourth segment 192 are arranged intersectingly.

[0053] Specifically, such as Figure 5 As shown, the angle between the third segment 191 and the fourth segment 192 ranges from 45° to 120°, and the angle between the first segment 151 and the second segment 152 can be any one of the following values ​​or any range between any two values: 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115° and 120°.

[0054] In this embodiment, such as Figure 5 As shown, the third connecting channel 19 includes a third segment 191 and a fourth segment 192 that are connected. The third segment 191 and the fourth segment 192 are arranged to cross each other, which facilitates the processing of the second connecting channel 18.

[0055] In one embodiment, such as Figure 5 As shown, along the direction close to the fourth segment 192, the cross-section of the third segment 191 gradually decreases along the extension direction of the third segment 191; along the direction close to the third segment 191, the cross-section of the fourth segment 192 gradually decreases along the extension direction of the fourth segment 192. Specifically, the cross-section of the third segment 191 gradually decreases from one end close to the second glue injection groove 14 to one end away from the second glue injection groove 14; the cross-section of the fourth segment 192 gradually decreases from one end close to the glue injection hole 12 to one end away from the glue injection hole 12.

[0056] In this embodiment, such as Figure 5 As shown, the cross-section of the third segment 191 gradually decreases towards the direction of the fourth segment 192; the cross-section of the fourth segment 192 gradually decreases towards the direction of the third segment 191. This design facilitates disconnection at the connection between the third segment 191 and the fourth segment 192, improves the stability of waste removal, avoids abnormal breakage, prevents waste from being removed in time, and avoids affecting the production cycle.

[0057] According to an embodiment of this application, another aspect provides a production line body, including: the injection mold in any of the above embodiments.

[0058] Specifically, the production line can be a line that produces any plastic part.

[0059] In one embodiment, since the production line body includes an injection mold and has the same technical effect as the injection mold, it will not be described in detail here.

[0060] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An injection mold, characterized in that, include: The first mold core (1) has a first surface (11), on which a first product-shaped surface (111) and a through-hole (112) are provided. The through-hole (112) is located inside the first product-shaped surface (111), and the first product-shaped surface (111) is provided with a plurality of injection holes (12). The perforation part (112) is provided with a first injection groove (13), and the first surface (11) is provided with a second injection groove (14) at the part outside the first product shape part (111). The first mold core (1) is provided with a first connecting channel (15), and the first connecting channel (15) connects the first injection groove (13) and the second injection groove (14). At least one of the glue injection holes (12) near the first glue injection groove (13) is connected to the first glue injection groove (13), and at least one of the glue injection holes (12) near the second glue injection groove (14) is connected to the second glue injection groove (14).

2. The injection mold according to claim 1, characterized in that, It also includes a first ejector pin component (2), a first ejector pin hole (16) is provided on the first mold core (1), the first ejector pin hole (16) is connected to the first injection groove (13), and the first ejector pin component (2) is slidably disposed in the first ejector pin hole (16). And / or, it also includes a second ejector component (3), on which a second ejector hole (17) is provided, the second ejector hole (17) is connected to the second injection groove (14), and the second ejector component (3) is slidably disposed in the second ejector hole (17).

3. The injection mold according to claim 1, characterized in that, The first connecting channel (15) includes a first segment (151) and a second segment (152) that are connected, and the first segment (151) and the second segment (152) are intersected.

4. The injection mold according to claim 3, characterized in that, Along the direction close to the second segment (152), the cross-section of the first segment (151) gradually decreases along the extension direction of the first segment (151); And / or, along the direction close to the first segment (151), the cross-section of the second segment (152) gradually decreases along the extension direction of the second segment (152).

5. The injection mold according to any one of claims 1 to 4, characterized in that, The first mold core (1) is provided with a second connecting channel (18), and the injection hole (12) that is connected to the second injection groove (14) is connected to the second injection groove (14) through the second connecting channel (18); The cross-section of the second connecting channel (18) gradually decreases in the direction close to the injection hole (12).

6. The injection mold according to claim 5, characterized in that, The second connecting channel (18) is arc-shaped.

7. The injection mold according to any one of claims 1 to 4, characterized in that, The first mold core (1) is provided with a third connecting channel (19), which includes a third segment (191) and a fourth segment (192) that are connected. The injection hole (12) that is connected to the first injection groove (13) is connected to the fourth segment (192). The third segment (191) is connected to the second injection groove (14). The third segment (191) and the fourth segment (192) are arranged to cross each other.

8. The injection mold according to claim 7, characterized in that, Along the direction close to the fourth segment (192), the cross-section of the third segment (191) gradually decreases along the extension direction of the third segment (191); And / or, along the direction close to the third segment (191), the cross-section of the fourth segment (192) gradually decreases along the direction of extension of the fourth segment (192).

9. The injection mold according to claim 1, characterized in that, It also includes a second mold core (4) and a sliding block (5). The second mold core (4) has a second surface (41) which is opposite to the first surface (11). The second surface (41) has a second product-shaped surface (411). A slide (42) is provided on the first mold core (1). The slide (42) passes through the first product-shaped surface (111). The sliding block (5) slides in cooperation with the slide (42). A main nozzle (43) is provided on the second mold core (4). In the injection molding state, the first surface (11) is in contact with the second surface (41), the first product surface (111) and the second product surface (411) form a cavity of product (6), and the main nozzle (43) is connected to the second injection groove (14).

10. A production line body, characterized in that, include: The injection mold as described in any one of claims 1 to 9.

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