Demoulding mechanism and mould
By designing the coordinated movement of the slider assembly, the deformation and strain problems of the undercut parts during mold demoulding are solved, and smooth demoulding of the product is achieved.
Patent Information
- Application Number
- CN202422482727.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-14
AI Technical Summary
During the mold demolding process, the undercut parts in the cavity can easily cause product deformation or strain.
A demoulding mechanism is designed. Through the coordinated movement of the slider assembly, including the first slider, the second slider and the third slider, the horizontal disengagement of the undercut part is achieved by utilizing the cooperation between the fixed mold and the slider seat, thereby reducing the movement stroke of the slider.
It effectively avoids deformation and strain on the undercut parts of the product during demoulding, and meets the movement needs in areas with insufficient space.
Smart Images
Figure CN223395670U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field related to molds, and in particular to a demoulding mechanism and a mold. Background Art
[0002] During the mold release process, if the product has an undercut in the mold opening direction, directly ejecting the product from the mold cavity can easily cause product deformation, strain, and other defects. Therefore, it is necessary to propose a demolding mechanism to meet the needs of demolding injection molded products with undercuts in the mold cavity. Utility Model Content
[0003] In view of this, it is necessary to provide a demoulding mechanism and a mold that can solve the above technical problems.
[0004] To solve the above technical problems, this application provides the following technical solutions:
[0005] A demoulding mechanism is used in a mold, and the demoulding mechanism includes:
[0006] A movable mold frame, on which a movable mold core is installed;
[0007] a slider assembly, which cooperates with the movable mold core and is used together for injection molding the product, the slider assembly comprising a first slider, a second slider, and a third slider, the first slider abutting against and slidably connected to the second slider, the second slider and the third slider being rotatably mounted within the movable mold core, and the rotational centerlines of the second slider and the third slider on the movable mold core being arranged on the same straight line, wherein the third slider is spaced apart from the second slider and forms a cavity, the cavity being used for injection molding the undercut portion of the product;
[0008] a fixed mold, in transmission connection with the first slider, for driving the first slider to slide on the second slider, thereby providing a rotation space for the second slider to rotate on the movable mold core;
[0009] The slider seat is respectively connected to the second slider and the third slider for driving the second slider and the third slider to rotate in opposite directions so that the second slider and the third slider are separated from the undercut portion, and the undercut portion can move in the horizontal direction driven by the product.
[0010] It can be understood that, through the above-mentioned structural setting, when demoulding, the demoulding mechanism first uses the fixed mold to drive the first slider to slide on the second slider, so as to provide avoidance space for the subsequent rotation of the second slider on the movable mold core, and then uses the slider seat to simultaneously drive the second slider and the third slider to rotate in opposite directions, so that the second slider and the third slider are disengaged from the undercut part of the product, so that the product can move in the horizontal direction and disengage from the demoulding mechanism, which can avoid the product deformation, stretching and other adverse phenomena on the undercut part of the product when demoulding; at the same time, since the second slider located in the product disengages from the undercut part in a rotational manner, the movement stroke required for the second slider to disengage from the undercut part is shorter, which can meet the limitation of insufficient space when the second slider moves in the product.
[0011] In one embodiment, the slider seat is slidably mounted in the movable mold frame;
[0012] When the slider seat slides in the movable mold frame, the slider seat can simultaneously drive the second slider and the third slider to rotate in opposite directions.
[0013] It can be understood that, through the above-mentioned structural setting, the demoulding mechanism can control the second slider and the third slider to separate from the product undercut part by controlling the sliding of the slider seat in the movable mold frame, which facilitates the demoulding of the demoulding mechanism.
[0014] In one embodiment, a connecting rod is hingedly connected between the second slider and the slider seat, and the connecting rod can drive the second slider to rotate under the drive of the slider seat;
[0015] Furthermore, the third slider is connected to a support rod, and a support slope is provided on the slider seat, and the support slope can abut against the support rod to support the third slider; and the support slope can be separated from the support rod under the drive of the slider seat, so that the third slider rotates under the action of gravity.
[0016] In one embodiment, the demoulding mechanism further includes a telescopic driving member, which is installed in the movable mold frame and is transmission-connected to the slider seat for driving the slider seat to slide in the movable mold frame.
[0017] It is understandable that the telescopic driving member is used to control the sliding of the slider seat in the movable mold frame, which can realize automatic control of the sliding of the slider seat and improve the control accuracy.
[0018] In one embodiment, a first inclined ejector column is connected to the fixed mold, and the first inclined ejector column can be plugged into and fitted with the first slider. Moreover, the first inclined ejector column can push the first slider to slide on the second slider under the drive of the fixed mold.
[0019] It can be understood that the first slider is pushed up by the first inclined push column on the fixed mold to achieve the sliding of the first slider on the second slider. In this way, the matching structure required for the matching between the first slider and the second slider can be simplified.
[0020] In one embodiment, one of the first slider and the second slider is provided with a first limiting portion, and the other is provided with a second limiting portion. The first limiting portion can abut against the second limiting portion to limit the sliding of the first slider on the second slider.
[0021] It can be understood that, by utilizing the abutment between the first limiting portion and the second limiting portion, the travel of the first slider when sliding on the second slider can be controlled, thereby meeting the requirement that the first slider provide rotation space for the second slider.
[0022] In one embodiment, the demoulding mechanism further includes a support block, which is capable of abutting against the second slider to support and limit the rotation of the second slider on the movable mold core;
[0023] The support block is transmission-connected to the fixed mold, and the support block can be separated from the second slider under the drive of the fixed mold, thereby releasing the rotation limit of the second slider.
[0024] In one embodiment, the demolding mechanism further includes a limit block, which is fixedly mounted in the movable mold frame, and the limit block can abut against the rotating second slider to limit the rotation angle of the second slider on the movable mold core.
[0025] It can be understood that by utilizing the abutment between the limit block and the rotating second slider, the rotation angle of the second slider on the movable mold core can be controlled to prevent the second slider from interfering with the product due to excessive rotation angle.
[0026] In one embodiment, one of the second slider and the third slider is formed with a protrusion, and the other is formed with a protrusion frame, and the protrusion portion can be inserted into the protrusion frame;
[0027] Wherein, a rotating shaft is installed on the movable mold core, and the rotating shaft passes through the convex frame and the convex block.
[0028] This application also seeks to protect a mold comprising the demoulding mechanism described above.
[0029] Due to the application of the above solution, this application has the following advantages compared to the prior art:
[0030] The demoulding mechanism and mold to be protected by the present application are arranged in the above-mentioned structure so that, when demoulding, the demoulding mechanism first drives the first slider to slide on the second slider by the fixed mold to provide avoidance space for the subsequent rotation of the second slider on the movable mold core. Then, the slider seat is used to simultaneously drive the second slider and the third slider to rotate in opposite directions, so that the second slider and the third slider are disengaged from the undercut part of the product, thereby allowing the product to move in the horizontal direction and disengage from the demoulding mechanism, thereby avoiding product deformation, strain and other adverse phenomena on the undercut part of the product when demoulding; at the same time, since the second slider located in the product is disengaged from the undercut part in a rotational manner, the movement stroke required for the second slider to disengage from the undercut part is shorter, thereby meeting the limitation of insufficient space when the second slider moves in the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0032] Figure 1 This is a schematic structural diagram of a demoulding mechanism provided in an embodiment of the present application when closed;
[0033] Figure 2 A cross-sectional view of a demoulding mechanism provided in an embodiment of the present application when closed;
[0034] Figure 3 for Figure 2 Enlarged view of the middle P part;
[0035] Figure 4 A schematic diagram of the partial structure of the demoulding mechanism provided in one embodiment of the present application when closed;
[0036] Figure 5 A schematic diagram of the partial structure of the demoulding mechanism provided in one embodiment of the present application when closed;
[0037] Figure 6 A schematic diagram of the partial structure of the demoulding mechanism provided in one embodiment of the present application when closed;
[0038] Figure 7 A schematic diagram of the partial structure of the demoulding mechanism provided in one embodiment of the present application when closed;
[0039] Figure 8 This is a schematic structural diagram of the demoulding mechanism provided in one embodiment of the present application when deployed;
[0040] Figure 9 A cross-sectional view of a demoulding mechanism provided in one embodiment of the present application when deployed;
[0041] Figure 10 This is a schematic diagram of the local structure of the demoulding mechanism provided in one embodiment of the present application when it is unfolded.
[0042] Figure numerals: 100, demoulding mechanism; 10, movable mold frame; 101, mold cavity; 11, movable mold core; 111, rotating shaft; 20, slider assembly; 21, first slider; 211, first limiting portion; 2111, protrusion; 22, second slider; 221, second limiting portion; 222, convex frame; 23, third slider; 231, protrusion; 30, fixed mold; 31, first inclined ejector column; 32, second inclined ejector column; 40, slider seat; 41, supporting inclined surface; 50, connecting rod; 60, support rod; 70, support block; 80, limiting block; 90, telescopic drive member; 200, product; 201, undercut portion. DETAILED DESCRIPTION
[0043] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
[0044] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0046] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.
[0047] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.
[0048] like Figures 1 to 10 The demolding mechanism 100 provided in one embodiment of the present application is applied to a mold (not shown), including a movable mold frame 10, a slider assembly 20, a fixed mold 30 and a slider seat 40. The movable mold frame 10 is installed with a movable mold core 11; the slider assembly 20 cooperates with the movable mold core 11 and is used together for injection molding the product. The slider assembly 20 includes a first slider 21, a second slider 22 and a third slider 23. The first slider 21 is attached to the second slider 22 and is slidably connected to the second slider 22. The second slider 22 and the third slider 23 are both rotatably installed in the movable mold core 11, and the rotation center lines of the second slider 22 and the third slider 23 on the movable mold core 11 are set on the same straight line. In particular, the third slider 23 is spaced apart from the second slider 22 and forms a cavity 101, which is used for injection molding the undercut portion 201 of the product 200; the fixed mold 30 is connected to the first slider 21 for driving the first slider 21 to slide on the second slider 22, so as to provide a rotation space for the second slider 22 to rotate on the movable mold core 11; the slider seat 40 is connected to the second slider 22 and the third slider 23 for driving the second slider 22 and the third slider 23 to rotate in opposite directions, so that the second slider 22 and the third slider 23 are separated from the undercut portion 201, and the undercut portion 201 can move in the horizontal direction driven by the product 200.
[0049] It can be understood that the demoulding mechanism 100 of the present application is arranged with the above-mentioned structure, so that when demoulding, the demoulding mechanism 100 first uses the fixed mold 30 to drive the first slider 21 to slide on the second slider 22, so as to provide avoidance space for the subsequent rotation of the second slider 22 on the movable mold core 11, and then uses the slider seat 40 to simultaneously drive the second slider 22 and the third slider 23 to rotate in opposite directions, so that the second slider 22 and the third slider 23 are separated from the undercut portion 201 of the product, so that the product 200 can move in the horizontal direction and separate from the demoulding mechanism 100, thereby avoiding the product deformation, strain and other adverse phenomena on the undercut portion 201 of the product when the product 200 is demoulded; at the same time, since the second slider 22 located in the product is separated from the undercut portion 201 in a rotational manner, the movement stroke required for the second slider 22 to separate from the undercut portion 201 is shorter, which can meet the limitation of insufficient space when the second slider 22 moves in the product 200.
[0050] like Figure 3 As shown, in one embodiment, one of the first slider 21 and the second slider 22 is provided with a first limiting portion 211, and the other is provided with a second limiting portion 221. The first limiting portion 211 can abut against the second limiting portion 221 to limit the sliding of the first slider 21 on the second slider 22. In other words, by utilizing the abutment between the first limiting portion 211 and the second limiting portion 221, the travel of the first slider 21 when sliding on the second slider 22 can be controlled, thereby meeting the requirement that the first slider 21 provide rotational space for the second slider 22. Here, the first slider 21 is provided with a first limiting portion 211, and the second slider 22 is also provided with a first limiting portion 211. The first slider 21 is provided with a second limiting portion 221, and the second slider 22 is also provided with a second limiting portion 221. When the first slider 21 slides rightward on the second slider 22, the first limiting portion 211 on the first slider 21 can abut against the second limiting portion 221 on the second slider 22, and the first limiting portion 211 on the second slider 22 can abut against the second limiting portion 221 on the first slider 21. In this way, the stability of the first slider 21 during the travel limit when sliding on the second slider 22 can be improved. Here, a protrusion 2111 is formed on the first limiting portion 211, and the second limiting portion 221 is configured as a groove. The protrusion 2111 can abut against the groove wall.
[0051] like Figure 10As shown, in one embodiment, one of the second and third sliders 22 and 23 is formed with a protrusion 231, and the other is formed with a protrusion frame 222. The protrusion 231 is partially insertable into the protrusion frame 222. The movable mold core 11 is mounted with a rotating shaft 111, which extends through the protrusion frame 222 and the protrusion 231. Here, the protrusion frame 222 is formed on the second slider 22, and the protrusion 231 is formed on the third slider 23. Of course, in other embodiments, the protrusion 231 is formed on the second slider 22, and the protrusion frame 222 is formed on the third slider 23.
[0052] like Figure 2 、 Figure 9 As shown, in one embodiment, a first inclined ejector column 31 is connected to the fixed mold 30. The first inclined ejector column 31 can be plugged into and engaged with the first slider 21. Furthermore, driven by the fixed mold 30, the first inclined ejector column 31 can push the first slider 21 to slide on the second slider 22. In other words, the first inclined ejector column 31 on the fixed mold 30 pushes the first slider 21 to slide on the second slider 22. This simplifies the mating structure required for the first slider 21 and the second slider 22.
[0053] like Figure 2 、 Figure 6 and Figure 9 As shown, in one embodiment, the slider seat 40 is slidably mounted within the movable mold frame 10. When the slider seat 40 slides within the movable mold frame 10, the slider seat 40 can simultaneously drive the second slider 22 and the third slider 23 to rotate in opposite directions. This arrangement allows the demolding mechanism 100 to control the second slider 22 and the third slider 23 from the undercut portion 201 of the product 200 by controlling the sliding of the slider seat 40 within the movable mold frame 10, thereby facilitating demolding of the demolding mechanism 100.
[0054] like Figure 2 、 Figure 7 As shown, in one embodiment, a connecting rod 50 is hingedly connected between the second slider 22 and the slider seat 40, and the connecting rod 50 can drive the second slider 22 to rotate under the drive of the slider seat 40; and, a support rod 60 is connected to the third slider 23, and a supporting inclined surface 41 is provided on the slider seat 40, and the supporting inclined surface 41 can abut against the support rod 60 to support the third slider 23; and, the supporting inclined surface 41 can be separated from the support rod 60 under the drive of the slider seat 40, so that the third slider 23 rotates under the action of gravity.
[0055] like Figure 5 、 Figure 6As shown, in one embodiment, the demolding mechanism 100 further includes a support block 70, which can abut against the second slider 22 to support and limit the rotation of the second slider 22 on the movable mold core 11; wherein the support block 70 is in transmission connection with the fixed mold 30, and the support block 70 can be driven by the fixed mold 30 to disengage from the second slider 22 and release the rotation limit on the second slider 22. Here, a second inclined ejector column 32 is connected to the fixed mold 30, and the second inclined ejector column 32 can be plugged into and cooperate with the support block 70. Moreover, the second inclined ejector column 32 can be driven by the fixed mold 30 to push the support block 70 to slide on the movable mold frame 10 and disengage from the second slider 22, thereby meeting the subsequent use requirements of the second slider 22 rotating on the movable mold core 11.
[0056] like Figure 6 、 Figure 9 and Figure 10 As shown, in one embodiment, the demolding mechanism 100 further includes a stopper 80, which is fixedly mounted within the movable mold frame 10. The stopper 80 is capable of abutting against the rotating second slider 22 to limit the rotational angle of the second slider 22 on the movable mold core 11. In other words, the abutment between the stopper 80 and the rotating second slider 22 controls the rotational angle of the second slider 22 on the movable mold core 11, thereby preventing the second slider 22 from interfering with the product 200 due to excessive rotation.
[0057] like Figure 2 、 Figure 9 and Figure 10 As shown, in one embodiment, the demolding mechanism 100 further includes a telescopic drive member 90. The telescopic drive member 90 is mounted within the movable mold frame 10 and is in transmission connection with the slider seat 40, for driving the slider seat 40 to slide within the movable mold frame 10. In other words, the telescopic drive member 90 is used to control the sliding movement of the slider seat 40 within the movable mold frame 10, thereby achieving automatic control of the sliding movement of the slider seat 40 and improving control accuracy. Here, the telescopic drive member 90 can be configured as a hydraulic cylinder.
[0058] The present application also provides a mold, comprising the demoulding mechanism 100 described above.
[0059] In summary, when the demolding mechanism 100 of the present application is working, under the action of the injection molding machine (not shown in the figure), first, the fixed mold 30 is separated from the movable mold frame 10, and the fixed mold 30 drives the first slider 21 to slide to the right on the second slider 22. Then, the telescopic drive member 90 drives the slider seat 40 to slide to the left, and the slider seat 40 simultaneously drives the second slider 22 and the third slider 23 to rotate in opposite directions, so that the second slider 22 and the third slider 23 are disengaged from the undercut portion 201 of the product, thereby allowing the product 200 to move in the horizontal direction and disengage from the demolding mechanism 100.
[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0061] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.
Claims
1. A demoulding mechanism, used in a mold, characterized in that: The demoulding mechanism (100) comprises: A movable mold frame (10) is provided with a movable mold core (11); A slider assembly (20) cooperates with the movable mold core (11) and is used together for injection molding a product (200), the slider assembly (20) comprising a first slider (21), a second slider (22) and a third slider (23), the first slider (21) being abutted against the second slider (22) and being slidably connected to the second slider (22), the second slider (22) and the third slider (23) being both rotatably mounted in the movable mold core (11), and the rotation center lines of the second slider (22) and the third slider (23) on the movable mold core (11) being arranged on the same straight line, wherein the third slider (23) and the second slider (22) are spaced apart and form a cavity (101), the cavity (101) being used for injection molding an undercut portion (201) of the product (200); a fixed mold (30) in transmission connection with the first slider (21) and used to drive the first slider (21) to slide on the second slider (22) to provide a rotation space for the second slider (22) to rotate on the movable mold core (11); The slider seat (40) is respectively connected to the second slider (22) and the third slider (23) in a transmission manner, and is used to drive the second slider (22) and the third slider (23) to rotate in opposite directions, so that the second slider (22) and the third slider (23) are separated from the undercut portion, and the undercut portion (201) can move in the horizontal direction under the drive of the product (200).
2. The demoulding mechanism according to claim 1, characterized in that: The slider seat (40) is slidably mounted in the movable mold frame (10); When the slider seat (40) slides in the movable mold frame (10), the slider seat (40) can simultaneously drive the second slider (22) and the third slider (23) to rotate in opposite directions.
3. The demoulding mechanism according to claim 1, characterized in that: A connecting rod (50) is hingedly connected between the second slider (22) and the slider seat (40), and the connecting rod (50) can drive the second slider (22) to rotate under the drive of the slider seat (40); Furthermore, the third slider (23) is connected to a support rod (60), and a support inclined surface (41) is provided on the slider seat (40), and the support inclined surface (41) can abut against the support rod (60) to support the third slider (23); and the support inclined surface (41) can be separated from the support rod (60) under the drive of the slider seat (40), so that the third slider (23) rotates under the action of gravity.
4. The demoulding mechanism according to claim 2, characterized in that: The demoulding mechanism (100) further comprises a telescopic driving member (90), which is installed in the movable mold frame (10) and is in transmission connection with the slider seat (40) for driving the slider seat (40) to slide in the movable mold frame (10).
5. The demoulding mechanism according to claim 1, characterized in that: A first inclined ejector column (31) is connected to the fixed mold (30), and the first inclined ejector column (31) can be plugged into and matched with the first slider (21). Moreover, the first inclined ejector column (31) can push the first slider (21) to slide on the second slider (22) under the drive of the fixed mold (30).
6. The demoulding mechanism according to claim 1, characterized in that: One of the first slider (21) and the second slider (22) is provided with a first limiting portion (211), and the other is provided with a second limiting portion (221); the first limiting portion (211) can abut against the second limiting portion (221) to limit the sliding of the first slider (21) on the second slider (22).
7. The demoulding mechanism according to claim 1, characterized in that: The demoulding mechanism (100) further comprises a support block (70), wherein the support block (70) is capable of abutting against the second slider (22) and is used for supporting and limiting the rotation of the second slider (22) on the movable mold core (11); The support block (70) is in transmission connection with the fixed mold (30), and the support block (70) can be separated from the second slider (22) under the drive of the fixed mold (30) and release the rotation limit of the second slider (22).
8. The demoulding mechanism according to claim 1, characterized in that: The demoulding mechanism (100) further comprises a limit block (80), wherein the limit block (80) is fixedly mounted in the movable mold frame (10), and the limit block (80) is capable of abutting against the rotating second slider (22) to limit the rotation angle of the second slider (22) on the movable mold core (11).
9. The demoulding mechanism according to claim 1, characterized in that: One of the second slider (22) and the third slider (23) is formed with a convex block (231), and the other is formed with a convex frame (222), and a portion of the convex block (231) can be inserted into the convex frame (222); Wherein, a rotating shaft (111) is installed on the movable mold core (11), and the rotating shaft (111) passes through the convex frame (222) and the convex block (231).
10. A mold, characterized in that: The demoulding device comprises the demoulding mechanism (100) according to any one of claims 1 to 9.