Mold base mechanism with exhaust function and injection mold

Abstract

The utility model discloses a mould base mechanism and injection mould with exhaust function, the mould base mechanism comprises a mould core and an exhaust component, the mould core is provided with a cavity and a mounting hole communicated with the cavity, the exhaust component is arranged in the mounting hole and comprises a first insert and a second insert, the first insert is provided with a first raised line extending along the longitudinal direction, and the second insert is provided with a second raised line extending along the longitudinal direction. The first insert is provided with a plurality of first protruding strips extending in the longitudinal direction, the second insert is provided with a plurality of second protruding strips extending in the longitudinal direction, the first protruding strips and the second protruding strips are arranged at intervals in the preset horizontal direction, and the first insert and the second insert abut against each other and are matched so that the first protruding strips and the second protruding strips can be alternately distributed in the preset horizontal direction. A first exhaust gap can be defined between the first protruding strip and the second protruding strip, and the first exhaust gap communicates with the cavity so that gas in the cavity can be exhausted. The exhaust assembly is formed by combining the two inserts, gas in the cavity is exhausted through the first exhaust gaps formed among the protruding strips, and the mold is simple in structure and convenient to produce, assemble and use.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding production technical field, especially a mould base mechanism and injection mold with exhaust function. BACKGROUND

[0002] In the existing injection molding production, in order to solve the problem of gas trouble of part product in the injection molding process, the injection mold usually sets up exhaust assembly at the mold core to realize the exhaust function of the cavity. The existing exhaust assembly is usually composed of multiple inserts and corresponding connecting pieces, these inserts are distributed in the form of arrangement or array, and are connected and fixed through connecting pieces, exhaust gaps are formed between every two inserts for exhausting the gas in the cavity, for example, the exhaust insert structure disclosed in patent publication No. CN212352603U adopts this form. However, the exhaust assembly of this structure contains more components, the overall structure is relatively complex, which leads to the complex structure of the mold, the assembly process is relatively cumbersome, not only increases the manufacturing cost of the mold, but also reduces the production efficiency, which is not conducive to the actual production application. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a mould base mechanism with exhaust function, the exhaust assembly of which is composed of two inserts, the first exhaust gap formed between multiple convex strips is used for exhausting the gas in the cavity, and the structure is simple, facilitating production and assembly.

[0004] The utility model also provides an injection mold with the mould base mechanism with exhaust function.

[0005] The mould base mechanism with exhaust function according to the first aspect embodiment of the utility model comprises a mold core and an exhaust assembly, the mold core is provided with a cavity and a mounting hole communicated with the cavity, the exhaust assembly is arranged in the mounting hole and comprises a first insert and a second insert, the first insert is provided with a first convex strip extending in the longitudinal direction, the first convex strip is provided with multiple and is arranged in the preset horizontal direction, the second insert is provided with a second convex strip extending in the longitudinal direction, the second convex strip is provided with multiple and is arranged in the preset horizontal direction, the first insert and the second insert are abutted and matched, and multiple first convex strips and multiple second convex strips are arranged in the preset horizontal direction alternately, the first convex strip and the second convex strip can define a first exhaust gap, the first exhaust gap is communicated with the cavity to exhaust the gas in the cavity.

[0006] The mold base mechanism with the exhaust function has at least the following beneficial effects: during assembly, the first insert and the second insert abut and cooperate to form an exhaust assembly, the first protruding strip and the second protruding strip define a first exhaust gap, the exhaust assembly is assembled into the mounting hole, and the first exhaust gap is communicated with the cavity; during use, the gas in the cavity can be discharged through the first exhaust gap, and the possibility of gas accumulation during the injection molding process is reduced.

[0007] According to some embodiments of the utility model, the side part of the first insert and / or the second insert is provided with a first chamfer extending in the longitudinal direction, so that a first exhaust passage can be defined between the first insert and the second insert, the first protruding strip and the second protruding strip are both provided with a notch groove, the notch groove on the first protruding strip and the notch groove on the second protruding strip are communicated with each other, and the first exhaust passage communicates the first exhaust gap through the notch groove.

[0008] According to some embodiments of the utility model, the outer peripheral side wall of the lower end of the exhaust assembly and the hole wall of the lower end of the mounting hole have a gap therebetween to form a second exhaust gap communicated with the cavity.

[0009] According to some embodiments of the utility model, the side part of the first insert and / or the second insert is provided with a first chamfer extending in the longitudinal direction, so that a first exhaust passage can be defined between the first insert and the second insert, the outer peripheral side ring of the lower end of the exhaust assembly is provided with a groove, and the first exhaust passage communicates the second exhaust gap through the groove.

[0010] According to some embodiments of the utility model, the side part of the exhaust assembly is provided with a second chamfer extending in the longitudinal direction, so that a second exhaust passage can be defined between the side part of the exhaust assembly and the wall part of the mounting hole, and the second exhaust passage communicates the second exhaust gap through the groove.

[0011] According to some embodiments of the utility model, the mold core is provided with an exhaust groove, and the first exhaust passage and the second exhaust passage are both communicated with the exhaust groove.

[0012] According to some embodiments of the utility model, the hole wall of the mounting hole abuts against the outer peripheral side wall of the middle part of the exhaust assembly and / or the outer peripheral side wall of the upper part of the exhaust assembly to limit the horizontal movement of the exhaust assembly relative to the mounting hole.

[0013] According to some embodiments of the utility model, the upper end of the mounting hole is equipped with a limiting step, the upper end of the exhaust assembly is correspondingly equipped with a limiting convex part, and the limiting convex part is in abutment with the limiting step.

[0014] According to some embodiments of the utility model, the mold base mechanism further comprises a mold plate, the mold core is arranged on the mold plate and is fixedly connected with the mold plate, and the limiting convex part is clamped and fixed between the limiting step and the mold plate.

[0015] According to the second aspect of the utility model, the injection mold comprises the mold base mechanism with the exhaust function according to the first aspect of the utility model.

[0016] According to the injection mold of the utility model, the following beneficial effects are achieved: the exhaust assembly of the mold base mechanism is combined by two inserts, the first exhaust gap formed between the plurality of convex strips is used for exhausting the gas in the cavity, the structure is simple, the mold structure is simplified, the manufacturing cost of the mold is reduced, and the production and assembly are facilitated.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0019] Figure 1 It is a structural schematic view of the mold base mechanism with the exhaust function according to the utility model embodiments;

[0020] Figure 2 It is a partial sectional view of the mold base mechanism; Figure 1

[0021] Figure 3 It is a partial structural schematic view of the mold base mechanism; Figure 1

[0022] Figure 4 It is a partial structural schematic view of the mold base mechanism; Figure 3

[0023] Figure 5 It is a partial structural schematic view of the mold base mechanism; Figure 4

[0024] Figure 6 It is a partial structural schematic view of the mold base mechanism; Figure 4

[0025] ​​​​​Figure 7 As Figure 4 The second schematic view of the top view of the middle die seat mechanism;

[0026] Figure 8 As Figure 4 The schematic view of the structure of the exhaust assembly;

[0027] Figure 9 As Figure 8 The schematic view of the exploded structure of the exhaust assembly.

[0028] Reference signs:

[0029] Cavity 101, mounting hole 102, first exhaust gap 103, first exhaust channel 104, second exhaust gap 105, second exhaust channel 106, mold core 110, exhaust groove 111, limiting step 112, first insert 120, first convex strip 121, first chamfer 122, second chamfer 123, limiting convex part 124, second insert 130, second convex strip 131, notch groove 132, recess 133, mold plate 140. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs 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 of the present application.

[0031] In the description of the present application, it should be understood that, if the orientation description is involved, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, if the words such as several, greater than, less than, more than, above, below, and the like appear, the meaning of several is one or more, the meaning of more than two is two or more, greater than, less than, more than, and the like are not included in the number, and above, below, and the like are included in the number.

[0033] If the first and the second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0034] In the description of the utility model, unless otherwise expressly limited, the words such as setting, installing, connecting should be understood in broad sense, and the specific meaning of the above words in the utility model can be determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0035] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a mold base mechanism with exhaust function comprises a mold core 110 and an exhaust assembly, the mold core 110 is provided with a cavity 101 and a mounting hole 102 communicated with the cavity 101, the exhaust assembly is arranged in the mounting hole 102 and comprises a first insert 120 and a second insert 130, the first insert 120 is provided with a first longitudinal rib 121, the first longitudinal rib 121 is provided with a plurality of and is arranged in a preset horizontal direction, the second insert 130 is provided with a second longitudinal rib 131, the second longitudinal rib 131 is provided with a plurality of and is arranged in a preset horizontal direction, the first insert 120 and the second insert 130 are abutted and matched, and a plurality of first longitudinal ribs 121 and a plurality of second longitudinal ribs 131 are arranged in a preset horizontal direction, the first longitudinal rib 121 and the second longitudinal rib 131 can define a first exhaust gap 103, the first exhaust gap 103 is communicated with the cavity 101, so as to exhaust the gas in the cavity 101.

[0036] It can be understood that, as Figure 2 、 Figure 4 、 Figure 8 and Figure 9As shown, the first insert 120 and the second insert 130 are arranged left and right respectively, the right side (the side facing the second insert 130) of the first insert 120 is provided with a first longitudinal protrusion 121, the left side (the side facing the first insert 120) of the second insert 130 is provided with a second longitudinal protrusion 131, the first longitudinal protrusion 121 and the second longitudinal protrusion 131 are both provided with three, the preset horizontal direction is parallel to the front-back direction, and the three first longitudinal protrusions 121 and the three second longitudinal protrusions 131 are both arranged in the front-back direction. When assembling, the first insert 120 and the second insert 130 are abutted and matched, specifically, the right side of the last first longitudinal protrusion 121 is abutted to the second insert 130, the left side of the frontmost second longitudinal protrusion 131 is abutted to the first insert 120, the first insert 120 and the second insert 130 are combined into an exhaust assembly, the three first longitudinal protrusions 121 and the three second longitudinal protrusions 131 are arranged in an alternating manner along the front-back direction, the first longitudinal protrusion 121 and the second longitudinal protrusion 131 define a first exhaust gap 103 in a curved shape, the exhaust assembly is assembled into the mounting hole 102, so that the first exhaust gap 103 is communicated with the cavity 101; when in use, the gas in the cavity 101 can be discharged through the first exhaust gap 103, which is beneficial to reduce the possibility of gas accumulation problem in the injection molding process. By adopting the above structure, the exhaust assembly is combined by two inserts, the first exhaust gap 103 formed between the plurality of protrusions is used for discharging the gas in the cavity 101, and the structure is simple and convenient for production, assembly and use.

[0037] In actual application, the specific number of the first longitudinal protrusion 121 and the second longitudinal protrusion can be changed according to actual needs, for example, the first longitudinal protrusion 121 and the second longitudinal protrusion can also be provided with two, four or more, or the first longitudinal protrusion 121 is provided with two and the second longitudinal protrusion 131 is provided with three, and the shape of the first exhaust gap 103 can also be changed accordingly according to the arrangement of the first longitudinal protrusion 121 and the second longitudinal protrusion 131, which will not be repeated here.

[0038] In some embodiments, the side of the first insert 120 and / or the second insert 130 is provided with a first chamfer 122 extending in the longitudinal direction, so that the first exhaust passage 104 can be defined between the first insert 120 and the second insert 130, the first longitudinal protrusion 121 and the second longitudinal protrusion 131 are both provided with a notch groove 132, the notch groove 132 on the first longitudinal protrusion 121 and the notch groove 132 on the second longitudinal protrusion 131 are communicated with each other, and the first exhaust passage 104 communicates the first exhaust gap 103 through the notch groove 132.

[0039] It can be understood that, for example, Figure 7 , Figure 8 and Figure 9As shown, the side of the first insert 120 and the second insert 130 is provided with a first chamfer 122 extending in the longitudinal direction, the first chamfer 122 forms the first exhaust passage 104 at the joint between the first insert 120 and the second insert 130, the first protrusion 121 and the second protrusion 131 are both provided with a notch groove 132 and the notch grooves 132 on the first protrusion 121 and the second protrusion 131 are communicated with each other, the first exhaust passage 104 is communicated with the first exhaust gap 103 through the notch groove 132, thereby forming a two-stage exhaust structure. In use, the gas in the cavity 101 first enters the first exhaust gap 103, fine exhaust is performed by using the thin gap, then enters the first exhaust passage 104 through the notch groove 132, coarse exhaust is performed by using the wide exhaust passage, which is beneficial to the rapid exhaust of the gas and facilitates use.

[0040] In actual application, the first chamfer 122 can be a flat chamfer or a round chamfer, and the specific shape and the setting position thereof can be set according to actual use needs.

[0041] In some embodiments, the outer peripheral side wall of the lower end of the exhaust assembly and the hole wall of the lower end of the mounting hole 102 have a gap, so as to form a second exhaust gap 105 communicated with the cavity 101.

[0042] As shown in Figure 2 , Figure 4 and Figure 5 , the outer peripheral side wall of the lower end of the exhaust assembly and the hole wall of the lower end of the mounting hole 102 have a gap, so as to form a second exhaust gap 105 communicated with the cavity 101, increase the area of fine exhaust, and facilitate exhaust use. In actual application, the second exhaust gap 105 can be in a strip shape or a ring shape, and the specific shape thereof can be set according to actual use needs.

[0043] In some embodiments, the side of the first insert 120 and / or the second insert 130 is provided with a first chamfer 122 extending in the longitudinal direction, so that the first insert 120 and the second insert 130 can define a first exhaust passage 104, the outer peripheral side ring of the lower end of the exhaust assembly is provided with a groove 133, and the first exhaust passage 104 is communicated with the second exhaust gap 105 through the groove 133.

[0044] As shown in Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the lower end of the first insert 120 and the second insert 130 are both provided with a groove 133, so that the outer periphery of the lower end of the gas assembly forms an annular groove structure, and the first exhaust channel 104 is communicated with the second exhaust gap 105 through the groove 133, thereby forming a two-stage exhaust structure. In use, the gas in the cavity 101 first enters the second exhaust gap 105, and is finely exhausted through the relatively thin gap, and then enters the first exhaust channel 104 through the groove 133, and is coarsely exhausted through the relatively wide exhaust channel, which is beneficial to the rapid exhaust of the gas and facilitates use. In actual application, the specific structure of the groove 133 can also be set according to actual use needs.

[0045] In some embodiments, the side of the exhaust assembly is provided with a second chamfer 123 extending in the longitudinal direction, so that the side of the exhaust assembly and the wall of the mounting hole 102 can define a second exhaust channel 106, and the second exhaust channel 106 is communicated with the second exhaust gap 105 through the groove 133.

[0046] As can be understood, Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the side of the first insert 120 and the second insert 130 are both provided with a second chamfer 123 extending in the longitudinal direction, and the second chamfer 123 makes the first insert 120 and the wall of the mounting hole 102 and the second insert 130 and the wall of the mounting hole 102 both define a second exhaust channel 106, which increases the area of coarse exhaust and facilitates exhaust use. In actual application, the second chamfer 123 can be a flat chamfer, or also a round chamfer, and the specific shape and setting position thereof can be set according to actual use needs.

[0047] In some embodiments, the mold core 110 is provided with an exhaust groove 111, and the first exhaust channel 104 and the second exhaust channel 106 are both communicated with the exhaust groove 111.

[0048] As can be understood, Figure 2 and Figure 3 As shown, the upper side of the mold core 110 is provided with an exhaust groove 111, and the mounting hole 102 is through-penetrating, so that the first exhaust channel 104 and the second exhaust channel 106 are both communicated with the exhaust groove 111, which facilitates the rapid exhaust of the gas and facilitates use. In actual application, the specific shape of the exhaust groove 111 can be set according to actual use needs.

[0049] In some embodiments, the hole wall of the mounting hole 102 abuts against the outer peripheral wall of the middle part of the exhaust assembly and / or the outer peripheral wall of the upper part of the exhaust assembly, so as to limit the horizontal movement of the exhaust assembly relative to the mounting hole 102.

[0050] As can be understood, Figure 2 and Figure 7As shown, the outer peripheral side wall of the middle and upper part of the exhaust assembly abuts against the hole wall of the mounting hole 102, thereby limiting the horizontal movement of the exhaust assembly relative to the mounting hole 102, achieving the fixation of the exhaust assembly in the horizontal direction, and facilitating the assembly and use. In actual application, the installation of the exhaust assembly can also be achieved through a connecting piece, such as a bolt, a pin, etc., and the specific setting can be made according to the actual use needs.

[0051] In some embodiments, the upper end of the mounting hole 102 is provided with a limiting step 112, and the upper end of the exhaust assembly is correspondingly provided with a limiting protrusion 124, which abuts against the limiting step 112.

[0052] As shown in Figs. Figure 2 , Figure 8 and Figure 9 As shown, the left and right sides of the upper end of the mounting hole 102 are provided with limiting steps 112, and the left side of the first insert 120 and the right side of the second insert 130 are correspondingly provided with limiting protrusions 124, which abut against each other through the abutting cooperation between the limiting protrusions 124 and the limiting steps 112, thereby limiting the longitudinal position of the exhaust assembly relative to the mounting hole 102, achieving the fixation of the exhaust assembly in the longitudinal direction, and facilitating the assembly and use. In actual application, the specific structure of the limiting steps 112 and the limiting protrusions 124 can be set according to the actual use needs, which is not limited herein.

[0053] In some embodiments, the mold base mechanism further comprises a mold plate 140, and the mold core 110 is arranged in and fixedly connected with the mold plate 140, and the limiting protrusion 124 is clamped and fixed between the limiting step 112 and the mold plate 140.

[0054] As shown in Figs. Figure 1 and Figure 2 As shown, the mold core 110 is arranged in and fixedly connected with the mold plate 140, and the upper side of the limiting protrusion 124 abuts against the mold plate 140, and the limiting protrusion 124 is clamped by the limiting step 112 and the mold plate 140, thereby better fixing the position of the exhaust assembly, and the structure is simple and facilitates the assembly and use. In actual application, the limiting protrusion 124 and the limiting step 112 can also be adhesively fixed, magnetically fixed, or fixed through a bolt connection, or fixed through a clamping structure therebetween, and the specific setting can be made according to the actual use needs.

[0055] The injection mold according to the second aspect of the present application comprises the mold base mechanism with the exhaust function according to the first aspect of the present application.

[0056] According to the injection mold, the exhaust assembly is combined by two inserts, the first exhaust gap 103 formed between the plurality of convex strips is used for exhausting the gas in the cavity 101, the structure is simple, the mold structure is simplified and the manufacturing cost of the mold is reduced, and production assembly is facilitated.

[0057] In actual application, the mold base mechanism can be an upper mold base or a lower mold base, since other configurations of the injection mold are known to those skilled in the art, and thus are not described in detail here.

[0058] The injection mold is described in detail above in combination with the drawings, but the injection mold is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the injection mold.

Claims

1. A mold base mechanism with venting function, characterized in that, The application relates to a mold core with an exhaust function. The mold core is provided with a cavity and a mounting hole communicating with the cavity; an exhaust assembly is arranged in the mounting hole and comprises a first insert and a second insert; the first insert is provided with first longitudinal protrusions, and the first protrusions are arranged in a plurality of groups and are arranged in a preset horizontal direction; the second insert is provided with second longitudinal protrusions, and the second protrusions are arranged in a plurality of groups and are arranged in a preset horizontal direction; the first insert and the second insert are abuttingly connected and arranged, and the first protrusions and the second protrusions are arranged in an alternating manner in the preset horizontal direction; the first protrusions and the second protrusions can define first exhaust gaps therebetween, and the first exhaust gaps communicate with the cavity to exhaust gas in the cavity. The side of the first insert and / or the second insert is provided with a first longitudinal chamfer, so that the first insert and the second insert can define a first exhaust channel therebetween; the first protrusions and the second protrusions are both provided with notch grooves, and the notch grooves of the first protrusions and the notch grooves of the second protrusions communicate with each other; and the first exhaust channel communicates with the first exhaust gaps through the notch grooves.

2. The mold base mechanism having a vent function according to claim 1, characterized by, The outer peripheral side wall of the lower end of the exhaust assembly and the hole wall of the lower end of the mounting hole have a gap to form second exhaust gaps communicating with the cavity.

3. The mold base mechanism having a vent function according to claim 1, wherein The side of the first insert and / or the second insert is provided with a first longitudinal chamfer, so that the first insert and the second insert can define a first exhaust channel therebetween; the outer peripheral side ring of the lower end of the exhaust assembly is provided with a groove, and the first exhaust channel communicates with the second exhaust gaps through the groove.

4. The mold base mechanism having an exhaust function according to claim 3, characterized by, The side of the exhaust assembly is provided with a second longitudinal chamfer, so that the side of the exhaust assembly and the wall of the mounting hole can define a second exhaust channel therebetween, and the second exhaust channel communicates with the second exhaust gaps through the groove.

5. The mold base mechanism having a venting function according to claim 4, wherein The mold core is provided with an exhaust groove, and the first exhaust channel and the second exhaust channel both communicate with the exhaust groove.

6. The mold base mechanism having an exhaust function according to claim 5, wherein The hole wall of the mounting hole and the outer peripheral side wall of the middle part of the exhaust assembly and / or the outer peripheral side wall of the upper part of the exhaust assembly abut to limit the horizontal movement of the exhaust assembly relative to the mounting hole.

7. The mold base mechanism having a vent function according to claim 1, wherein The upper end of the mounting hole is provided with a limiting step, and the upper end of the exhaust assembly is correspondingly provided with a limiting protrusion, and the limiting protrusion abuts with the limiting step.

8. The mold base mechanism having a vent function according to claim 1, wherein The mold core is arranged in a mold plate and is fixedly connected with the mold plate, and the limiting protrusion is clamped and fixed between the limiting step and the mold plate.

9. The mold base mechanism having a vent function according to claim 8, wherein The application also relates to a mold base mechanism with an exhaust function.

10. An injection mold characterized in that, ​

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