Injection mold and injection molding device

Abstract

The utility model relates to the technical field of injection molding, and provides an injection mold and an injection molding device.The injection mold comprises a first mold body, a second mold body and a pressing part. The first mold and the second mold are mutually spliced and define a mold cavity and a pressing cavity, the mold cavity is communicated with the pressing cavity, the mold cavity is used for accommodating a heating element, and a wire of the heating element can penetrate through the pressing cavity. And the pressing piece is arranged in the pressing cavity, is at least adsorbed with the first mold through magnetic attraction force, and is used for pressing the wire of the heating piece. In this way, in the subsequent process of splicing the second mold and the first mold, the situation that the wire is extruded by the first mold and the second mold to be deformed and damaged can be avoided, and therefore the quality of injection molded products is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding, and particularly relates to an injection mold and an injection device. Background Art

[0002] In the existing atomizing device, when an installation seat for installing a heating element is formed by in-mold injection molding, since the wire of the heating element is made of a metal material and has resilience, during the process of the upper mold and the lower mold being joined together, the wire is likely to pop out from the groove of the mold cavity formed in the lower mold, resulting in the wire being easily squeezed by the upper mold and the lower mold and being flattened into a thin sheet or even broken, thereby reducing the excellent rate of injection production and increasing the cost of injection production. Summary of the Utility Model

[0003] Based on this, it is necessary to provide an injection mold and an injection device for the problem of how to improve the avoidance of damage to the wire caused by extrusion by the mold.

[0004] An injection mold includes:

[0005] A first mold and a second mold, which are joined together with each other and define a mold cavity and a pressing cavity. The mold cavity is communicated with the pressing cavity. The mold cavity is used for accommodating a heating element, and the pressing cavity can supply the wire of the heating element to pass through;

[0006] A pressing member, which is arranged in the pressing cavity and is adsorbed to at least the first mold by magnetic attraction. The pressing member is used for pressing the wire of the heating element.

[0007] In one embodiment, the first mold is located at the bottom side of the second mold, and the pressing member is used for pressing the wire of the heating element in the direction from the second mold to the first mold.

[0008] In one embodiment, a pressing groove for the wire to pass through is recessed on the surface of the pressing member facing the first mold. The top wall of the pressing groove facing the first mold defines a pressing surface for pressing the wire.

[0009] In one embodiment, the first mold and the second mold are joined together with each other and define a transition cavity. The transition cavity is communicated between the mold cavity and the pressing cavity. The transition cavity can supply the wire of the heating element to pass through;

[0010] The distance that the pressing surface presses a part of the wire passing through the pressing cavity downward relative to the wire passing through the transition cavity toward the first mold is L, and the diameter of the wire is D, where 0.5D ≤ L ≤ 10D.

[0011] In one embodiment, the surface of the pressing member facing the mold cavity is recessed in the direction from the mold cavity towards the pressing cavity to form an avoidance notch, and the avoidance notch is located on the side of the pressing groove away from the first mold in the direction from the second mold towards the first mold, and is communicated with the pressing groove.

[0012] In one embodiment, define the distance that the surface of the pressing member facing the mold cavity is recessed in the direction from the mold cavity towards the pressing cavity as W, and the diameter of the wire as D, where 0.5D ≤ W ≤ 3D.

[0013] In one embodiment, limiting grooves are provided on the mutually facing surfaces of the first mold and the second mold, and the limiting grooves of the first mold and the second mold define the pressing cavity, and the two opposite ends of the pressing member in the fitting direction of the first mold and the second mold are respectively limited in the limiting grooves of the first mold and the second mold.

[0014] In one embodiment, the first mold and the second mold are mutually fitted and define an inlet and outlet, and the inlet and outlet are located on the side of the pressing cavity facing away from the mold cavity and are communicated with the pressing cavity, and the inlet and outlet are used for the pressing member to enter and exit.

[0015] In one embodiment, the first mold and the second mold are both metal components, and the pressing member is a magnetic attraction member.

[0016] An injection molding device includes the injection molding mold in the foregoing embodiment, and the injection molding mold is used for injection molding an installation seat for installing a heating element.

[0017] In the above injection molding mold and injection molding device, the first mold and the second mold are mutually fitted and define a mold cavity and a pressing cavity. The mold cavity is communicated with the pressing cavity. The mold cavity is used for accommodating a heating element, and the pressing cavity can allow the wire of the heating element to pass through. The pressing member is arranged in the pressing cavity and is at least adsorbed to the first mold by magnetic attraction force. Therefore, after the heating element and the wire are assembled on the first mold, the pressing member is adsorbed to the first mold by magnetic attraction force to realize the relative fixation between the pressing member and the first mold, and at the same time, the pressing member can press the wire to prevent the wire from coming out. In this way, in the subsequent process of fitting the second mold and the first mold, the situation that the wire is deformed and damaged by being squeezed by the first mold and the second mold can be avoided, thereby improving the quality of the injection molded product and reducing the production cost. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the injection molding mold in the present application;

[0019] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of

[0020] Figure 3 is Figure 2 A partial enlarged structural schematic diagram of area A in

[0021] Figure 4 is a structural schematic diagram of the first mold, pressing part, heating part, wire and mounting seat in the present application;

[0022] Figure 5 is Figure 4 a sectional structural schematic diagram of

[0023] Figure 6 is a structural schematic diagram of the first mold in the present application;

[0024] Figure 7 is a structural schematic diagram of the pressing part in the present application.

[0025] Reference numerals

[0026] 100, injection mold;

[0027] 10, first mold; 11, second mold;

[0028] 12, cavity; 121, fixing groove; 122, injection groove; 13, pressing cavity; 131, limiting groove; 14, inlet and outlet;

[0029] 15, pressing part; 151, pressing groove; 152, pressing surface; 153, relief notch; 154, hollow groove;

[0030] 16, transition cavity; 161, transition groove;

[0031] 200, heating part; 210, heating body; 220, wire; 300, mounting seat. Detailed implementation manners

[0032] To make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific implementation manners of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0034] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0035] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "above" or "below" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0038] An embodiment of the present application provides an injection molding device. The injection molding device includes an injection mold 100. The injection molding device is used in the technical field of injection molding. For example, the injection molding device is used to injection mold a mounting seat 300 that is disposed around a heating element 200 and is used to mount the heating element 200.

[0039] As an example, the heating element 200 can be applied in an atomization device and is used to heat an aerosol generating matrix to generate an aerosol. Of course, the heating element 200 can also be used in other fields, which are not specifically limited here. The heating element 200 includes a connected heating body 210 and a wire 220. The heating element 200 is connected to a power source to enable the power source to supply power to the heating element 200.

[0040] Please refer to Figures 1 to 6 , the injection mold 100 includes a first mold 10, a second mold 11 and a pressing member 15. The first mold 10 and the second mold 11 are mutually joined and define a mold cavity 12 and a pressing cavity 13. The mold cavity 12 is communicated with the pressing cavity 13. The mold cavity 12 is used to accommodate the heating element 200. The pressing cavity 13 can allow the wire 220 of the heating element 200 to pass through. The pressing member 15 is disposed in the pressing cavity 13 and is at least adsorbed to the first mold 10 by magnetic attraction. The pressing member 15 is used to press the wire 220 of the heating element 200. Specifically, the mutually facing surfaces of the first mold 10 and the second mold 11 are respectively provided with a mold groove, a transition groove 161 and a limiting groove 131 which are arranged in sequence. The mold groove includes a fixed groove 121 and an injection groove 122 that are communicated with each other. In the same first mold 10 or second mold 11, the fixed groove 121, the injection groove 122, the transition groove 161 and the limiting groove 131 are communicated in sequence.

[0041] When the first mold 10 and the second mold 11 are mutually joined, the fixed grooves 121 of the first mold 10 and the second mold 11 correspondingly enclose a fixed cavity, and the injection grooves 122 of the first mold 10 and the second mold 11 correspondingly enclose an injection cavity. The fixed cavity and the injection cavity are combined to form the mold cavity 12; the transition grooves 161 of the first mold 10 and the second mold 11 correspondingly enclose a transition cavity 16, and the limiting grooves 131 of the first mold 10 and the second mold 11 correspondingly enclose a pressing cavity 13. The transition cavity 16 is communicated between the mold cavity 12 and the pressing cavity 13.

[0042] A part of the heating body 210 of the heating element 200 is placed in the fixing cavity, and the part of the heating body 210 of the heating element 200 connected to the wire 220 is placed in the injection molding cavity. An installation seat 300 is formed by injection molding in the injection molding cavity. The wire 220 passes through the transition cavity 16 and the pressing cavity 13 in sequence. The pressing member 15 is located in the pressing cavity 13, and the two ends of the pressing member 15 opposite to each other along the splicing direction of the first mold 10 and the second mold 11 are respectively limited in the limiting grooves 131 that enclose to form the first mold 10 and the second mold 11.

[0043] It is worth mentioning that the pressing member 15 is located in the pressing cavity 13, and the inner walls of the limiting grooves 131 can all fit with the pressing member 15 to play a limiting role on the pressing member 15. In this way, the stable assembly of the pressing member 15 in the pressing cavity 13 can be realized, and then the stable assembly of the wire 220 can be ensured, so as to facilitate the subsequent injection molding operation.

[0044] Please refer to Figure 4 and Figure 5 During actual assembly, first, the heating element 200 and the pressing member 15 are assembled on the first mold 10 in sequence. Then, the second mold 11 is spliced with the first mold 10 to realize the installation of the heating element 200 and the pressing member 15. Finally, the injection molding material is injected into the injection molding cavity to form the installation seat 300.

[0045] In this application, by designing that the pressing member 15 is arranged in the pressing cavity 13, the pressing member 15 is at least adsorbed to the first mold 10 by magnetic attraction force to realize the connection between the pressing member 15 and the first mold 10. At the same time, the pressing member 15 can press the wire 220 to prevent the wire 220 from coming out. In this way, during the subsequent process of splicing the second mold 11 and the first mold 10, the situation that the wire 220 is deformed and damaged by being squeezed by the first mold 10 and the second mold 11 can be avoided, thereby improving the quality of the injection molded product and reducing the production cost.

[0046] In some alternative embodiments, both the first mold 10 and the second mold 11 are metal components, such as iron, nickel, cobalt, etc. The pressing member 15 is a magnetic part. It can be understood that magnetic attraction forces can be generated between the pressing member 15 and the first mold 10, and between the pressing member 15 and the second mold 11 to realize the fixation of the pressing member 15 relative to the first mold 10 and the second mold 11, thereby avoiding the deviation of the pressing member 15 and further ensuring the stable installation of the wire 220.

[0047] In some embodiments, please refer to Figure 1 and Figure 2, the first mold 10 is located on the bottom side of the second mold 11, and the pressing member 15 is used to press the wire 220 of the heating element 200 in the direction from the second mold 11 towards the first mold 10. In this application, the pressing member 15 applies a pressing force on the wire 220 in the direction from the second mold 11 towards the first mold 10, and the pressing force can counteract and offset the resilience of the wire 220 to escape from the opening of the transition groove 161, thereby fixing the wire 220 in the transition groove 161 to prevent the wire 220 from being deformed and damaged by being squeezed by the second mold 11.

[0048] In some embodiments, please refer to Figure 2 and Figure 7 , a pressing groove 151 for the wire 220 to pass through is formed by the surface of the pressing member 15 facing the first mold 10 being recessed, and the top wall of the pressing groove 151 facing the first mold 10 defines a pressing surface 152 for pressing the wire 220.

[0049] It can be understood that the pressing groove 151 opens towards the first mold 10, and the wall surface opposite to the opening of the pressing groove 151 corresponds to the top wall of the pressing groove 151. When the pressing member 15 is adsorbed and fixed to the first mold 10, the groove wall of the pressing groove 151 and the surface of the first mold 10 enclose a pressing space for the wire 220 to pass through, and the wire 220 in the pressing space rebounds and abuts against the top wall of the pressing groove 151. In this way, the top wall of the pressing groove 151 can apply a pressing force on the wire 220 in the direction from the second mold 11 towards the first mold 10, thereby fixing the wire 220 in the transition groove 161 to prevent the wire 220 from being deformed and damaged by being squeezed by the second mold 11.

[0050] In some embodiments, please refer to Figure 2 and Figure 3 , the pressing surface 152 presses the part of the wire 220 passing through the pressing cavity 13 downward relative to the wire 220 passing through the transition cavity 16 towards the first mold 10 by a distance of L, the diameter of the wire 220 is D, and 0.5D ≤ L ≤ 10D.

[0051] It can be understood that when L is within the range of 0.5D to 10D, the pressing surface 152 can generate sufficient pressing force on the wire 220 to prevent the wire 220 from rebounding, while ensuring the stable installation of the wire 220, and also avoiding the situation that the wire 220 is bent and damaged due to excessive deformation under the action of the pressing force.

[0052] It should be noted that the specific size of L is obtained through experimental testing. The relevant parameters, steps, etc. of the experimental testing related to the specific size of L are all conventional techniques for those skilled in the art and will not be elaborated here.

[0053] It should be noted that the part of the pressing surface 152 that actually contacts the wire 220 is the end of the pressing surface 152 close to the mold cavity 12. After the wire 220 passes through the transition cavity 16, it will abut against the end of the pressing surface 152 and deform. To avoid damage to the wire 220, there needs to be a sufficiently long space between the outlet of the transition cavity 16 and the end of the pressing surface 152 to allow the wire 220 to deform.

[0054] Therefore, in this application, the surface of the pressing member 15 facing the mold cavity 12 is recessed along the direction from the mold cavity 12 to the pressing cavity 13 to form an avoidance notch 153. The avoidance notch 153 is located on the side of the pressing groove 151 away from the first mold 10 in the direction from the second mold 11 to the first mold 10, and is communicated with the pressing groove 151.

[0055] It can be understood that, please refer to Figure 3 and Figure 7 , the distance that the avoidance notch 153 is recessed along the direction from the mold cavity 12 to the pressing cavity 13 corresponds to the distance between the outlet of the transition cavity 16 and the end of the pressing surface 152. The avoidance notch 153 provided in this application can provide space for the deformation of the wire 220 under the pressing action of the pressing surface 152, thereby avoiding damage to the wire 220.

[0056] In this application, please refer to Figure 2 and Figure 3 , define the distance W that the surface of the pressing member 15 facing the mold cavity 12 is recessed along the direction from the mold cavity 12 to the pressing cavity 13. The diameter of the wire 220 is D, and 0.5D ≤ W ≤ 3D. It can be understood that when W is within the range of 0.5D ≤ W ≤ 3D, the avoidance notch 153 can provide sufficient deformation space for the wire 220 to avoid damage to the wire 220.

[0057] It should be noted that the specific size of W is obtained through experimental testing. The parameters, steps, etc. related to the experimental testing of the specific size of W are all conventional techniques for those skilled in the art and will not be elaborated here.

[0058] In some embodiments, please refer to Figure 1 and Figure 2 , the first mold 10 and the second mold 11 are mutually combined and define an inlet and outlet 14. The inlet and outlet 14 is located on the side of the pressing cavity 13 facing away from the mold cavity 12 and is communicated with the pressing cavity 13. The inlet and outlet 14 is used for the inlet and outlet of the pressing member 15. It can be understood that the inlet and outlet 14 can allow the wire 220 to pass through, and is convenient for the disassembly and assembly of the pressing member 15, with convenient operation, which is beneficial to improving the user experience.

[0059] In some embodiments, please refer to Figure 1 and Figure 7, a plurality of hollow grooves 154 are also formed on the pressing member 15. It can be understood that a plurality of hollow grooves 154 can be formed on the surface or inside of the pressing member 15 to reduce the weight of the pressing member 15, facilitate the user to carry and use, and can reduce the production materials of the pressing member 15, which is beneficial to cost savings.

[0060] The specific layout and quantity of the hollow grooves 154 are not limited. Specifically, in this application, the pressing member 15 is respectively formed with hollow grooves 154 on both sides along the direction perpendicular to the mold cavity 12 and pointing to the pressing cavity 13, and the hollow grooves 154 extend along the direction from the mold cavity 12 to the pressing cavity 13.

[0061] For the above-mentioned injection mold 100 and injection device, the first mold 10 and the second mold 11 are mutually combined and define to form the mold cavity 12 and the pressing cavity 13. The mold cavity 12 is communicated with the pressing cavity 13. The mold cavity 12 is used to accommodate the heating element 200, and the pressing cavity 13 can supply the wire 220 of the heating element 200 to pass through. The pressing member 15 is arranged in the pressing cavity 13 and is at least adsorbed to the first mold 10 by magnetic attraction. Therefore, after the heating element 200 and the wire 220 are assembled in the mold groove of the first mold 10, the pressing member 15 is adsorbed to the first mold 10 by magnetic attraction to realize the relative fixation between the pressing member 15 and the first mold 10. At the same time, the pressing member 15 can press the wire 220 to prevent the wire 220 from coming out of the mold groove of the first mold 10. In this way, during the subsequent process of combining the second mold 11 and the first mold 10, the situation that the wire 220 is deformed and damaged by being squeezed by the first mold 10 and the second mold 11 can be avoided, thereby improving the quality of the injection-molded product and reducing the production cost.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0063] The above-described embodiments only express several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An injection mold, characterized in that: include: The first mold and the second mold are assembled with each other to define a mold cavity and a pressing cavity, the mold cavity is connected with the pressing cavity, the mold cavity is used to accommodate the heating element, and the pressing cavity can allow the wire of the heating element to pass through; A pressing piece is arranged in the pressing cavity and is adsorbed to the first mold at least by magnetic attraction. The pressing piece is used to press the wire of the heating element.

2. The injection mold according to claim 1, characterized in that: The first mold is located at the bottom side of the second mold, and the pressing piece is used to press the wire of the heating element along the direction from the second mold to the first mold.

3. The injection mold according to claim 2, characterized in that: The surface of the pressing piece facing the first die is recessed to form a pressing groove for the wire to pass through, and the groove top wall of the pressing groove facing the first die defines a pressing surface for pressing the wire.

4. The injection mold according to claim 3, characterized in that: The first mold and the second mold are assembled together to form a transition cavity, the transition cavity is connected between the mold cavity and the pressing cavity, and the transition cavity can allow the wire of the heating element to pass through; The pressing surface is used to press the part of the wire passing through the pressing cavity downward toward the first mold relative to the wire passing through the transition cavity by a distance of L, the diameter of the wire is D, and 0.5D≤L≤10D.

5. The injection mold according to claim 3, characterized in that: The surface of the pressing part facing the mold cavity is recessed in the direction from the mold cavity to the pressing cavity to form a avoidance notch, and the avoidance notch is located on the side of the pressing groove away from the first mold in the direction from the second mold to the first mold, and is connected to the pressing groove.

6. The injection mold according to claim 5, characterized in that: The distance that the surface of the pressed part facing the mold cavity is recessed in the direction from the mold cavity to the pressing cavity is defined as W, the diameter of the wire is defined as D, and 0.5D≤W≤3D.

7. The injection mold according to claim 1, characterized in that: The surfaces of the first mold and the second mold facing each other are both provided with limiting grooves, the limiting grooves of the first mold and the second mold enclose the pressing cavity, and the two ends of the pressing part which are relatively arranged along the splicing direction of the first mold and the second mold are respectively limited in the limiting grooves of the first mold and the second mold.

8. The injection mold according to claim 1, characterized in that: The first mold and the second mold are assembled with each other to define an inlet and outlet, which are located on the side of the pressing cavity facing away from the mold cavity and are connected to the pressing cavity. The inlet and outlet are used for entering and exiting the pressed part.

9. The injection mold according to claim 1, characterized in that: The first mold and the second mold are both metal components, and the pressed part is a magnetic part.

10. An injection molding device, characterized in that: It comprises the injection mold as described in any one of claims 1 to 9, wherein the injection mold is used for injection molding to form a mounting seat for mounting a heating element.

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