Injection mold

Abstract

The utility model discloses an injection mold which comprises a first mold base and a second mold base, the first mold base is provided with a limiting hole part extending in the first direction, a moving cavity is formed in the limiting hole part, and the limiting hole part is provided with a ventilation channel communicating the moving cavity with the outside; the second die holder is located on one side, in the first direction, of the first die holder, the second die holder is provided with a first guide part which extends in the first direction and is right opposite to the moving cavity, and the first guide part can selectively move in the moving cavity; when the first guide part moves towards the interior of the moving cavity, gas in the moving cavity is suitable for being guided to the outside through the ventilation channel. According to the injection mold provided by the embodiment of the invention, the mold opening and closing speed and the production efficiency can be improved.

Description

Technical Field

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

[0002] In the related art, when the horizontal screw injection molding machine is working, the mold opening and closing process is realized by using the guide pins and guide sleeves on the front and rear molds. In the process of opening and closing the mold, clearance fit is usually used to achieve better guidance of the mold. In the process of fitting, in order to overcome the resistance of air, the mold closing process is slow and the production process cycle is extended. In order to solve the above problems, the usual practice is to adjust the process and reduce the speed and pressure of opening and closing the mold. However, reducing the speed or pressure of opening and closing the mold will lead to slow production cycle and increased costs. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide an injection mold, which can improve the mold opening and closing speed and production efficiency.

[0004] According to the injection mold of the embodiment of the present application, it includes: a first mold base, the first mold base is provided with a limiting hole portion extending in a first direction, a movable cavity is formed in the limiting hole portion, and the limiting hole portion is provided with a ventilation channel connecting the movable cavity with the outside world; a second mold base, the second mold base is located on one side of the first mold base in the first direction, the second mold base is provided with a first guide member extending in the first direction and arranged opposite to the movable cavity, the first guide member can be selectively moved inside the movable cavity; wherein when the first guide portion moves toward the inside of the movable cavity, the gas inside the movable cavity is suitable for being guided to the outside world through the ventilation channel.

[0005] According to the injection mold of the embodiment of the present application, the injection mold has a first mold base and a second mold base, and a limiting hole portion is provided on the first mold base, and a moving cavity for moving the first guide member is formed inside the limiting hole portion, and a ventilation channel connecting the moving cavity with the outside world is also provided on the limiting hole portion. When the first guide portion moves toward the moving cavity, the gas inside the moving cavity can be guided to the outside world through the ventilation channel, thereby reducing the pressure in the moving cavity, making it easier for the first guide member to move in the moving cavity, thereby reducing the resistance of the injection mold when opening and closing the mold, and improving the speed of opening and closing the mold and the production rhythm.

[0006] In some embodiments of the present application, the injection mold further includes: a mold base pad, which is located on the side of the first mold base away from the second mold base and connected to the first mold base, and the mold base pad is suitable for closing one end of the movable cavity away from the second mold base.

[0007] In some embodiments of the present application, a ventilation groove is formed on one side of the first mold base facing the mold base pad, the ventilation groove is recessed inward and extends in the second direction, and the ventilation channel is formed between the ventilation groove and the mold base pad.

[0008] In some embodiments of the present application, a ventilation hole extending in the second direction is formed on the first mold base, and a ventilation channel is formed inside the ventilation hole.

[0009] In some embodiments of the present application, the second direction is orthogonal to the first direction.

[0010] In some embodiments of the present application, the limiting hole portion includes: a mounting portion, a first cavity extending in the first direction is formed in the mounting portion, a movable portion, the movable portion is arranged on the side of the mounting portion away from the second mold base, a second cavity connected to the first cavity is formed in the movable portion, and a ventilation channel is formed on the movable portion; wherein the first cavity and the second cavity are configured as the movable cavity.

[0011] In some embodiments of the present application, the inner wall of the first cavity is provided with a second guide member slidably connected to the first guide member.

[0012] In some embodiments of the present application, the inner diameter of the first cavity is D1, the inner diameter of the second cavity is D2, and the relationship D1>D2 is satisfied.

[0013] In some embodiments of the present application, the second guide member is constructed in a ring shape, the outer circumferential wall of the second guide member is in contact with the inner wall of the first cavity, and the inner circumferential wall of the second guide member is slidably connected to the first guide member.

[0014] In some embodiments of the present application, a fixing groove that is recessed inward and arranged corresponding to the mounting portion is formed on a side of the first mold base facing the second mold base, and the injection mold further includes: a pressing plate, which is located in the fixing groove and connected to the first mold base, and the side of the pressing plate facing the mounting portion abuts against the second guide member.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic structural diagram of an injection mold according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the first die base and the second die base;

[0019] Figure 3 yes Figure 2 Explosion diagram of

[0020] Figure 4 yes Figure 1 A cross-sectional schematic diagram of the first die base and the first guide member after they are matched;

[0021] Figure 5 yes Figure 4 A partial enlarged schematic diagram of

[0022] Figure 6 yes Figure 1 A schematic diagram of a part of the structure after the first die base and the first guide member cooperate;

[0023] Figure 7 yes Figure 1 A partial enlarged schematic diagram of the first die base and the die base pad after matching.

[0024] Reference numerals:

[0025] 10. Injection mold; 11. First mold base; 111. Limiting hole portion;

[0026] 1111, mounting portion; 1112, moving portion; 1113, first cavity; 1114, second cavity;

[0027] 112, moving cavity; 113, ventilation channel; 114, ventilation slot; 115, second guide member;

[0028] 12. second die base; 121. first guide member; 122. fastener;

[0029] 13. Die base pad; 14. Press plate. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] Reference below Figure 1-Figure 7An injection mold 10 according to an embodiment of the present application is described, and the injection mold 10 includes a first mold base 11 and a second mold base 12. The first mold base 11 is provided with a limiting hole portion 111 extending in a first direction, and a movable cavity 112 is formed in the limiting hole portion 111. The limiting hole portion 111 is provided with a ventilation channel 113 connecting the movable cavity 112 with the outside world. The second mold base 12 is located on one side of the first mold base 11 in the first direction, and the second mold base 12 is provided with a first guide member 121 extending in the first direction and arranged opposite to the movable cavity 112. The first guide member 121 can be selectively moved inside the movable cavity 112, wherein when the first guide portion moves toward the inside of the movable cavity 112, the gas inside the movable cavity 112 is suitable for being guided to the outside world through the ventilation channel 113.

[0032] At present, when the horizontal screw injection molding machine is working, the mold opening and closing process is realized by using the guide pins and guide sleeves on the front and rear molds. In the process of opening and closing the mold, in order to achieve better guidance of the mold, clearance fit is usually adopted. In the process of fitting, in order to overcome the resistance of air, the mold closing process is slow and the production process cycle is extended. In order to solve the above problems, the usual practice is to adjust the process and reduce the speed and pressure of opening and closing the mold. However, reducing the speed or pressure of opening and closing the mold will lead to slow production cycle and increased costs.

[0033] like Figure 1 and Figure 2 As shown, specifically, the injection mold 10 has a first mold base 11 and a second mold base 12, and the first mold base 11 is provided with a limiting hole portion 111 extending in a first direction, and a movable cavity 112 is formed inside the limiting hole portion 111, and the limiting hole portion 111 can also be provided with a ventilation channel 113 that connects the movable cavity 112 with the outside, and the second mold base 12 can be located on one side of the first mold base 11 in the first direction, and the second mold base 12 can be selectively moved relative to the first mold base 11. During the mold closing process, the second mold base 12 can move toward and fit the first mold base 11, and then liquid plastic is injected between the first mold base 11 and the second mold base 12. During the mold opening process, after the liquid plastic solidifies, the second mold base 12 moves away from the first mold base 11 to achieve the removal of the plastic part. In some embodiments, the first direction can be the thickness direction of the first mold base 11.

[0034] Furthermore, if Figure 3As shown, the second mold base 12 is provided with a first guide member 121 extending in the first direction, the first guide member 121 can be arranged opposite to the movable cavity 112, and the first guide member 121 can selectively move inside the movable cavity 112, thereby driving the second mold base 12 to move toward or away from the first mold base 11 to complete the opening and closing of the injection mold 10. Optionally, the first guide member 121 and the second mold base 12 can be detachably connected by screws and bolts, and the second mold base 12 can also include a fastener 122. A threaded hole extending in the axial direction is formed on the first guide member 121, and the fastener 122 can be penetrated through the second mold base 12 and cooperate with the threaded hole to realize the installation of the first guide member 121 on the second mold base 12. In the actual assembly process, the first guide member 121 can be fixed to the second mold base 12 by screws. Among them, when the first guide part moves toward the inside of the movable cavity 112, the gas inside the movable cavity 112 can be guided to the outside through the ventilation channel 113, thereby reducing the resistance of the first guide part during movement, making it easier for the first guide part to move in the movable cavity 112, thereby increasing the opening and closing speed of the injection mold 10, reducing the gas pressure borne by the first guide part 121, and improving the production cycle and reliability.

[0035] In short, the injection mold 10 of the embodiment of the present application has a first mold base 11 and a second mold base 12. The first mold base 11 is provided with a limiting hole portion 111. A movable cavity 112 for moving the first guide member 121 is formed inside the limiting hole portion 111. The limiting hole portion 111 is also provided with a ventilation channel 113 connecting the movable cavity 112 with the outside world. When the first guide portion moves toward the movable cavity 112, the gas inside the movable cavity 112 can be guided to the outside world through the ventilation channel 113, thereby reducing the pressure in the movable cavity 112, making it easier for the first guide member 121 to move in the movable cavity 112, thereby reducing the resistance of the injection mold 10 when opening and closing the mold, and improving the speed of opening and closing the mold and the production rhythm.

[0036] like Figure 1As shown, in some embodiments of the present application, the injection mold 10 further includes a mold base pad 13, which can be arranged on a side of the first mold base 11 away from the second mold base 12, and the mold base pad 13 can be connected to the first mold base 11. Optionally, the mold base pad 13 and the first mold base 11 can be detachably connected by screws or bolts. In actual use, the mold base pad 13 can support the first mold base 11. When the second mold base 12 moves toward the first mold base 11, the mold base pad 13 can provide a reverse force for the first mold base 11 to ensure that the first mold base 11 is in a state of being ... The mold base 11 does not move. During actual processing, in order to facilitate drilling and processing, the movable cavity 112 can be set through the thickness direction of the first mold base 11, and the mold base pad 13 can close the end of the movable cavity 112 away from the second mold base 12, ensuring that the gas in the movable cavity 112 is only guided to the outside through the ventilation channel 113. By fitting the mold base pad 13 with the first mold base 11, it can prevent external dust or debris from entering the first mold base 11 through the gap between the mold base pad 13 and the first mold base 11 to affect the normal operation of the injection mold 10, thereby improving the reliability of the injection mold 10.

[0037] like Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, a ventilation groove 114 can also be formed on the first mold base 11, and the ventilation groove 114 can be arranged on the surface of the first mold base 11 on the side facing the mold base pad 13. The ventilation groove 114 can be recessed toward the inside of the first mold base 11, and the ventilation groove 114 can extend in the second direction. It can be understood that one end of the ventilation groove 114 can be connected to the movable cavity 112, and the other end of the ventilation groove 114 can extend toward the outside. When the first mold base 11 is fitted with the mold base pad 13, a ventilation channel 113 can be defined between the inner wall of the ventilation groove 114 and the mold base pad 13. During actual processing, the edge of the ventilation groove 114 can also be chamfered.

[0038] In other embodiments of the present application, a ventilation hole may be formed on the first mold base 11, and the ventilation hole may extend in the second direction. The ventilation hole may penetrate the limiting hole portion 111, and one end of the ventilation hole may be connected to the moving cavity 112, and the other end of the ventilation hole may be open to the outside. A ventilation channel 113 may be defined in the ventilation hole. In actual processing, the ventilation hole may be close to the surface of the first mold base 11 on the side facing the mold base pad 13 to prevent the first guide member 121 from sealing the ventilation channel 113 during the movement process, thereby affecting the discharge of the gas inside the moving cavity 112. Further, the second direction is orthogonal to the first direction, and the second direction may be the extension direction of the ventilation channel 113. By orthogonalizing the second direction to the first direction, the processing of the ventilation hole or ventilation groove 114 may be facilitated. Moreover, since the second mold base 12 moves in the horizontal direction when the injection mold 10 is working, the extension direction of the ventilation channel 113 may be the height direction, thereby preventing the gas inside the moving cavity 112 from accidentally injuring the operator during the discharge process.

[0039] like Figure 4 and Figure 5 As shown, in some embodiments of the present application, the limiting hole portion 111 includes a mounting portion 1111 and a movable portion 1112, and a first cavity 1113 extending in a first direction may be formed in the mounting portion 1111, the movable portion 1112 may be arranged on a side of the mounting portion 1111 away from the second mold base 12, and a second cavity 1114 may be formed in the movable portion 1112, the second cavity 1114 may be connected to the first cavity 1113, and a ventilation channel 113 may be formed on the movable portion 1112, wherein the first cavity 1113 and the second cavity 1114 may be constructed as a movable cavity 112, and the mounting portion 1111 and the movable portion 1112 may construct an integral structure.

[0040] like Figure 3 and Figure 5 As shown, in some embodiments of the present application, the inner wall of the first cavity 1113 is provided with a second guide member 115, and when the injection mold 10 is working, the first guide member 121 is slidably connected with the second guide member 115, the inner diameter of the first cavity 1113 is D1, and the inner diameter of the second cavity 1114 is D2, and the inner diameter of the first cavity 1113 and the inner diameter of the second cavity 1114 can meet the following conditions: D1>D2. By setting the inner diameter of the first cavity 1113 and the inner diameter of the second cavity 1114 within the above range, it can be ensured that the first cavity 1113 can provide additional space for the installation of the second guide member 115, and at the same time ensure that the first guide member 121 can slide in the movable cavity 112.

[0041] like Figure 5As shown, in some embodiments of the present application, the second guide member 115 can be constructed in a ring shape, and the outer peripheral wall of the second guide member 115 can be transitionally matched with the inner wall of the first cavity 1113 to play a pressure-bearing role. The inner peripheral wall of the second guide member 115 and the first guide member 121 adopt a clearance fit to play a guiding and positioning role, thereby increasing the contact area between the second guide member 115 and the first guide member 121, thereby ensuring that the first guide member 121 can slide in the first direction. The first guide member 121 can be constructed in multiple forms, and the multiple first guide members 121 can be spaced apart on the outer periphery of the second mold base 12. The movable cavity 112 and the second guide member 115 can be constructed in multiple forms corresponding to the multiple first guide members 121, and each movable cavity 112 is formed with a ventilation channel 113.

[0042] like Figure 3 and Figure 5 As shown, in some embodiments of the present application, a fixing groove is further formed on the first mold base 11, and the fixing groove can be arranged on the surface of the first mold base 11 on the side facing the second mold base 12, and the fixing groove can be arranged to be recessed toward the inside of the first mold base 11, and the fixing groove can be arranged corresponding to the mounting portion 1111, and the injection mold 10 also includes a pressing plate 14, and the pressing plate 14 can be located in the fixing groove, and the pressing plate 14 can be connected to the first mold base 11, that is, the pressing plate 14 can be connected to the inner wall of the fixing groove, and optionally, the pressing plate 14 and the inner wall of the fixing groove are connected. The walls can be connected in a detachable manner by means of screws or bolts, or the pressure plate 14 and the inner wall of the fixing groove can be connected in a detachable manner by plugging in or snapping in. The detachable connection can facilitate the disassembly and replacement of the second guide member 115. The pressure plate 14 can bear pressure and fix the second guide member 115. Specifically, the pressure plate 14 abuts against the second guide member 115 on one side of the mounting portion 1111, thereby fixing the second guide member 115 in the first cavity 1113, thereby limiting the position of the second guide member 115.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0045] In the description of the present application, “plurality” means two or more.

[0046] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0047] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An injection mold, characterized in that: include: a first mold base, wherein the first mold base is provided with a limiting hole portion extending in a first direction, a moving cavity is formed in the limiting hole portion, and the limiting hole portion is provided with a ventilation channel connecting the moving cavity with the outside; A second mold base, the second mold base is located at one side of the first mold base in the first direction, the second mold base is provided with a first guide member extending in the first direction and arranged opposite to the moving cavity, and the first guide member can selectively move inside the moving cavity; in When the first guide member moves toward the interior of the moving chamber, the gas inside the moving chamber is suitable for being guided to the outside through the ventilation channel.

2. The injection mold according to claim 1, characterized in that: Also includes: A die base pad is located on a side of the first die base away from the second die base and is connected to the first die base, and the die base pad is suitable for closing an end of the movable cavity away from the second die base.

3. The injection mold according to claim 2, characterized in that: A ventilation groove is formed on one side of the first mold base facing the mold base backing plate. The ventilation groove is recessed inward and extends in the second direction. The ventilation channel is formed between the ventilation groove and the mold base backing plate.

4. The injection mold according to claim 2, characterized in that: A ventilation hole extending in the second direction is formed on the first mold base, and a ventilation channel is formed inside the ventilation hole.

5. The injection mold according to any one of claims 3-4, characterized in that: The second direction is orthogonal to the first direction.

6. The injection mold according to any one of claims 1 to 4, characterized in that: The limiting hole portion comprises: A mounting portion, wherein a first cavity extending in the first direction is formed in the mounting portion, A moving part, the moving part is arranged on a side of the mounting part away from the second mold base, a second cavity connected to the first cavity is formed in the moving part, and a ventilation channel is formed on the moving part; wherein The first cavity and the second cavity are configured as the moving cavity.

7. The injection mold according to claim 6, characterized in that: The inner wall of the first cavity is provided with a second guide member which is slidably connected with the first guide member.

8. The injection mold according to claim 7, characterized in that: The inner diameter of the first cavity is D1, and the inner diameter of the second cavity is D2, and they satisfy: D1>D2.

9. The injection mold according to claim 7, characterized in that: The second guide member is constructed in an annular shape, the outer peripheral wall of the second guide member is in contact with the inner wall of the first cavity, and the inner peripheral wall of the second guide member is slidably connected to the first guide member.

10. The injection mold according to claim 7, characterized in that: A fixing groove which is recessed inward and arranged corresponding to the mounting portion is formed on the side of the first mold base facing the second mold base, and the injection mold further includes: a pressing plate, which is located in the fixing groove and connected to the first mold base, and the side of the pressing plate facing the mounting portion abuts against the second guide member.

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