Demolding structure
Through the core insert, the structure of product demolding is solved, and the problem of difficult for injection molded products to be separated from the mold and left traces on the structure is left, achieving a traceless and complete product demolding process, simplifying equipment transformation.
Patent Information
- Application Number
- CN202422584970.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the existing injection molding process, the product is difficult to disengage from the mold, and the ejection structure is easy to leave traces on the product surface, and small-detailed products are easily drawn when separated, resulting in unqualified quality.
The structure of the product is driven by the core insert, through the mold opening of the front template and the rear template, the slider and support components are used to achieve traceless mold release of the product, and the guide groove and linkage are combined to ensure the integrity of the product.
It realizes the release of the product without ejecting parts, avoids the stripping traces, and protects product integrity at high temperatures, simplifies equipment transformation and facilitates promotion.
Smart Images
Figure CN223252273U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding, in particular to a demoulding structure. Background Art
[0002] Injection molding is a commonly used production process that can quickly complete product production by injecting molding material into a mold. Existing injection molding processes mostly use the form of front mold and back mold to work together, but there are several problems during processing.
[0003] 1. When the mold is opened after injection molding, the product is often attached to the mold and difficult to remove;
[0004] 2. As one of the solutions to problem 1, the existing solution is to use an ejection structure to eject the product. However, this method will leave demoulding marks on the product surface and cannot meet the high standards required for the product surface.
[0005] 3. For products with many small details in shape and structure, product drawing is likely to occur when the product is separated from the mold, resulting in unqualified product quality. Utility Model Content
[0006] In view of one of the deficiencies of the prior art, the utility model provides a demoulding structure to solve the problem of demoulding of injection molded products.
[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a demoulding structure comprising a front template and a rear template, the front template and the rear template being connected to the front mold core and the rear mold core respectively, the front template being movable toward or away from the rear template; an upper fixing plate being provided corresponding to the front template, and a lower fixing plate being provided corresponding to the rear template; the rear template being movable toward or away from the lower fixing plate; the rear mold core and the rear template being slidably connected, and the sliding direction being the direction of mold opening or closing; and further comprising:
[0008] The core can be inserted into the product, and the insertion direction of the core is perpendicular to the mold opening direction;
[0009] The slider is connected to the core insert and is linked to the front template or the rear template. When the mold is opened, the slider can drive the core insert to be pulled out from the product.
[0010] Preferably, a plurality of support components are provided between the rear template and the lower fixing plate, and the support components include:
[0011] A support member, fixedly connected to the lower fixing plate and slidably connected to the rear template;
[0012] A spring is arranged around the support member, and the spring is against the rear template.
[0013] Preferably, the core insert is a long strip structure; one end of the core insert is fixedly connected to the slider, and the length direction of the core insert is parallel to the sliding direction of the slider.
[0014] Preferably, the slider is slidably connected to the rear template, and the sliding direction of the slider on the rear template is perpendicular to the mold opening direction.
[0015] Preferably, it also includes:
[0016] The baffle is fixedly arranged between the rear mold core and the slider, and the baffle is fixedly connected to the rear mold plate; the inlaid core passes through the baffle.
[0017] Preferably, a plurality of sliding grooves are provided on the rear template corresponding to the sliding block, the lower portion of the sliding block is fixedly connected to the first guide block, and the first guide block and the sliding groove are slidably connected.
[0018] Preferably, the rear template further comprises:
[0019] The first limiting plate is arranged on the upper part of the slide groove. The first limiting plate extends to the upper part of the slide groove, and the lower surface of the first limiting plate is in contact with the first guide block.
[0020] Preferably, it also includes:
[0021] The guide plate is fixedly connected to the front template; the guide plates are located on both sides of the slider, and a guide groove is provided on the side of the guide plate facing the slider; the slider is slidably connected to the guide plate through the guide groove; when the front template moves away from the rear template, the guide plate can drive the slider to slide on the rear template.
[0022] Preferably, the guide groove:
[0023] The upper vertical portion is a vertical slide groove and is arranged close to the front template;
[0024] The inclined portion is a sliding groove in an inclined direction, the upper end of the inclined portion is connected to the lower end of the vertical portion; the lower end is inclined in a direction away from the rear mold core;
[0025] The lower vertical portion is a vertical slide groove, which is arranged close to the rear template, and the bottom end of the lower vertical portion is an open mouth;
[0026] Second guide blocks are provided on both sides of the sliding block corresponding to the guide grooves, and the second guide blocks are slidably connected to the guide grooves.
[0027] Preferably, the support assembly is also provided between the rear mold core and the lower fixed plate;
[0028] At least one of the sliders is provided with a linkage member on a side facing the rear mold core, the linkage member is fixedly connected to the slider and can slide on the rear mold plate following the slider;
[0029] An extrusion block is fixedly arranged on the side of the rear mold core; the extrusion block is arranged corresponding to the linkage member, and when the linkage member slides, the linkage member can push the extrusion block toward the lower fixed plate.
[0030] Compared with existing technologies, this solution offers the following advantages: This solution uses the core insert to separate the product from the rear mold core, allowing product demolding without the need for an ejector, without leaving marks on the product due to the ejection action. This solution requires no additional power and utilizes the opening action of the front and rear mold plates to extract the core insert from the demolding machine, making it easier to modify existing equipment and facilitate its implementation and promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 The overall structure of the embodiment of this application is shown as follows Figure 1 ;
[0032] Figure 2 The overall structure of the embodiment of this application is shown as follows Figure 2 ;
[0033] Figure 3 for Figure 1 A partial enlarged view of;
[0034] Figure 4 This is a schematic diagram of the guide plate structure of an embodiment of the present application;
[0035] Figure 5 This is a diagram showing the hidden guide plate state for the embodiment of the present application;
[0036] Figure 6 This is a schematic diagram of the slider structure of an embodiment of the present application.
[0037] In the picture:
[0038] 1. Rear mold; 11. Slide; 12. First limit plate; 2. Rear mold core; 3. Core insert; 4. Slider; 41. Second guide block; 42. Linkage member; 5. Support member; 6. Spring; 7. Baffle; 8. Guide plate; 81. Guide groove. DETAILED DESCRIPTION
[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0040] See also Figure 1-Figure 5 , this application provides the following technical solutions:
[0041] A demolding structure includes a front template and a rear template 1, each connected to a front mold core and a rear mold core 2, respectively. The front template can move toward or away from the rear template 1; an upper fixing plate is provided corresponding to the front template, and a lower fixing plate is provided corresponding to the rear template 1; the upper and lower fixing plates and the front template do not have key improvements and are therefore not shown in the accompanying drawings. In addition, the front template and rear template 1 are respectively provided with guide posts and guide sleeves. The connection between the front and rear templates 1 can be formed using existing injection molding structures. The specific connection method between the two is not the key point of this solution and will not be detailed here.
[0042] Unlike the prior art, the improvement of this solution is that the rear template 1 can move toward or away from the lower fixed plate; the rear mold core 2 is slidably connected to the rear template 1, and its sliding direction is the direction of opening and closing the mold. This solution corresponds to the product 100 provided with a core insert 3, which is a long rod-shaped structure and can be inserted into the interior of the product 100. The insertion direction of the core insert 3 is perpendicular to the mold opening direction. A slider 4 is fixedly provided at one end of the core insert 3. The slider 4 is linked to the front template or the rear template 1. When the mold is opened, the slider 4 can drive the core insert 3 to be pulled out of the product 100. Several support components are provided between the rear template 1 and the lower fixed plate. The support components include a support member 5 and a spring 6. The support member 5 is a bolt structure, the lower end of which is fixedly connected to the lower fixed plate, and the upper part is inserted into the interior of the rear template 1 and slidably connected to the rear template 1; a spring 6 is arranged around the support member 5, and the spring 6 is against the rear template 1.
[0043] In this solution, a slider 4 is slidably connected to the rear template 1 and linked to the front template. That is, with the mold opening direction as the vertical direction, the slider 4 and the rear template 1 are horizontally slidably connected. When the mold is opened, the front template moves upward away from the rear template. During this process, because the rear template 1 can move away from the lower fixed plate, the rear template 1 is lifted up by the spring 6 under the action of the support assembly 5. At this time, the rear template 1 and the rear mold core 2 are separated. Because the slider 4 moves upward with the rear template 1, the core insert 3 drives the product 100 away from the rear mold core 2. As the mold opening action continues, the slider 4 moves horizontally during the upward movement of the front template. The core insert 3 follows the slider 4 and is pulled out of the product 100. The product 100 naturally falls onto the rear mold core 2, completing the ejection-free demolding. Because the core insert 3 is inserted into the product 100, the contact area between the two is large, so there is no problem of leaving marks on the product 100 during demolding.
[0044] Based on the above implementation plan, see Figure 3 A baffle 7 is provided between the rear mold core 2 and the slider 4. The baffle 7 is fixedly connected to the rear mold plate 1. The core insert 3 passes through the baffle 7. Considering that the core insert 3 may move with the product 100 during the sliding of the slider 4, the baffle 7 is provided to block the product 100 and allow the core insert 3 to separate from the product 100.
[0045] Based on the above implementation plan, see Figure 5 The rear template 1 is provided with a plurality of chutes 11 corresponding to the slider 4. The lower portion of the slider 4 is fixedly connected to a first guide block, which is slidably connected to the chutes 11. A first stopper 12 is provided on either side of the upper portion of the chutes 11. The first stopper 12 extends to the upper portion of the chutes 11, with its lower surface abutting against the first guide block. The first guide block has a convex structure, with its upper end fixedly connected to the lower surface of the slider 4, and the upper surface of the central boss abutting against the first stopper 12.
[0046] On the basis of the above embodiment, taking the rear mold core 2 of this embodiment as an example, the rear mold core 2 of this embodiment is provided with two rows of injection grooves for the product 100, so a slider 4 is provided for each row of injection grooves, and two guide plates 8 are provided for each slider 4. The upper part of the guide plate 8 is fixedly connected to the front template; the guide plates 8 are located on both sides of the slider 4, and the guide plates 8 are provided with guide grooves 81 on one side facing the slider 4; second guide blocks 41 are provided on both sides of the slider 4 corresponding to the guide grooves 81, as shown in FIG. Figure 5 As shown, the second guide block 41 can be a bearing, with its inner ring either fixedly or rotatably connected to the slider 4, and its outer ring located within the guide groove 81. The slider 4 is slidably connected to the guide plate 8 via the second guide block 42 and the guide groove 81. When the front template moves away from the rear template 1, the guide plate 8 drives the slider 4 to slide on the rear template 1. This method achieves linkage between the front template and the slider 4.
[0047] Based on the above implementation plan, see Figure 4 , with the front template at the top and the rear template 1 at the bottom, the guide groove 81 includes an upper vertical portion, an inclined portion and a lower vertical portion arranged from top to bottom: the upper vertical portion is a vertical slide groove, which is arranged close to the front template; the inclined portion is an inclined slide groove, the upper end of the inclined portion is connected to the lower end of the vertical portion, and the lower end is inclined toward the direction away from the rear mold core 2; the lower vertical portion is a vertical slide groove, which is arranged close to the rear template 1, and the bottom end of the lower vertical portion is an open mouth.
[0048] The guide groove 81 provided by this structure can divide the demolding process into four stages. In the first stage, the front template moves upward, and under the action of the support assembly, the rear template 1 moves upward synchronously, and the product 100 and the rear mold core 2 are separated. In the second stage, the front template continues to move upward, and the second guide block 42 moves in the upper vertical part of the guide groove 81. At this time, the slider 4 maintains its original position. In the third stage, the second guide block 42 enters the inclined groove of the guide groove 81, and the slider 4 begins to slide on the rear template 2. As the second guide block 42 moves to the lower end position of the inclined groove, the core insert 3 and the product 100 are separated. In the fourth stage, the front template continues to move upward, and the second guide block 42 slides out of the lower vertical groove, and the front template and the rear template are completely separated.
[0049] Based on the above implementation, if the product 100 and the rear mold core 2 are directly separated when the mold is opened, the product 100 may still be at a high temperature, which may cause wire drawing or deformation in the details. Therefore, a support component is also provided between the rear mold core 2 and the lower fixed plate; see Figure 6 A linkage part 42 is provided on one side of the slider 4 facing the rear mold core 2. The linkage part 42 is fixedly connected to the slider 4 and can slide on the rear template 1 following the slider 4; an extrusion block 21 is fixedly provided on the side of the rear mold core 2; the extrusion block 21 is provided corresponding to the linkage part 42. When the linkage part 42 slides, the linkage part 42 can push the extrusion block toward the lower fixed plate.
[0050] With this structure, when the mold is opened, the rear mold plate 1 and the rear mold core 2 move upward at the same time. During this process, the product 100 cools further. Until the front mold plate drives the guide plate 8 to move to the slider 4 and starts to slide, when the slider 4 slides, the linkage 42 pushes the extrusion block 21 downward, thereby moving the rear mold core 2 downward. At this time, the product 100 and the rear mold core 2 are separated, which can ensure that the product 100 will not be deformed. As the slider 4 continues to slide, the core 3 will eventually separate from the product 100.
[0051] On the basis of the above implementation plan, Figure 6 As shown, the linkage member 42 is a rod-shaped structure with a roughly inverted trapezoidal boss located below the slider 4. During injection molding, the extrusion block 21 is located on the side of the boss facing the slider 4, abutting the side of the boss. The extrusion block 21 is cylindrical, and the lower corners of the boss of the linkage member 42 are rounded. When the slider 4 begins to move laterally, the boss of the linkage member 42 connects with the extrusion block 21, pushing the rear mold core 2 downward.
[0052] See also Figure 3 In order to ensure the translation of the linkage member 42, a linkage limit plate is set on the corresponding linkage member on the rear template 1. The linkage limit plate is pressed against the upper side of the linkage member 42 to ensure that the linkage member 42 will not be deformed during the translation process of pushing the extrusion member 21.
[0053] In the description of the present application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.
[0054] In this application and its embodiments, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0055] In the present application and its embodiments, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0056] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.
[0057] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0058] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A demoulding structure comprising a front template and a rear template, wherein the front template and the rear template are connected to the front mold core and the rear mold core respectively, and the front template can move toward or away from the rear template; An upper fixing plate is provided corresponding to the front template, and a lower fixing plate is provided corresponding to the rear template; the feature is that, The rear template can move toward or away from the lower fixed plate; the rear mold core and the rear template are slidably connected, and the sliding direction is the direction of mold opening or mold closing; and further comprising: The core can be inserted into the product, and the insertion direction of the core is perpendicular to the mold opening direction; The slider is connected to the core insert and is linked to the front template or the rear template. When the mold is opened, the slider can drive the core insert to be pulled out from the product.
2. The demoulding structure according to claim 1, wherein: Several support components are provided between the rear template and the lower fixed plate, and the support components include: A support member, fixedly connected to the lower fixing plate and slidably connected to the rear template; A spring is arranged around the support member, and the spring is against the rear template.
3. The demoulding structure according to claim 2, wherein: The core is a long strip structure; one end of the core is fixedly connected to the slider, and the length direction of the core is parallel to the sliding direction of the slider.
4. The demoulding structure according to claim 3, wherein: The slider is slidably connected to the rear template, and the sliding direction of the slider on the rear template is perpendicular to the mold opening direction.
5. The demoulding structure according to claim 4, wherein: Also includes: The baffle is fixedly arranged between the rear mold core and the slider, and the baffle is fixedly connected to the rear mold plate; the inlaid core passes through the baffle.
6. The demoulding structure according to claim 5, wherein: A plurality of sliding grooves are provided on the rear template corresponding to the sliding block, the lower portion of the sliding block is fixedly connected to the first guide block, and the first guide block and the sliding groove are slidably connected.
7. The demoulding structure according to claim 6, wherein: The rear template also includes: The first limiting plate is arranged on the upper part of the slide groove. The first limiting plate extends to the upper part of the slide groove, and the lower surface of the first limiting plate is in contact with the first guide block.
8. The demoulding structure according to claim 5, wherein: Also includes: The guide plate is fixedly connected to the front template; the guide plates are located on both sides of the slider, and a guide groove is provided on the side of the guide plate facing the slider; the slider is slidably connected to the guide plate through the guide groove; when the front template moves away from the rear template, the guide plate can drive the slider to slide on the rear template.
9. The demoulding structure according to claim 8, wherein: The guide groove: The upper vertical portion is a vertical slide groove and is arranged close to the front template; The inclined portion is a sliding groove in an inclined direction, the upper end of the inclined portion is connected to the lower end of the vertical portion; the lower end is inclined in a direction away from the rear mold core; The lower vertical portion is a vertical slide groove, which is arranged close to the rear template, and the bottom end of the lower vertical portion is an open mouth; Second guide blocks are provided on both sides of the sliding block corresponding to the guide grooves, and the second guide blocks are slidably connected to the guide grooves.
10. The demoulding structure according to claim 9, wherein: The support assembly is also provided between the rear mold core and the lower fixed plate; At least one of the sliders is provided with a linkage member on a side facing the rear mold core, the linkage member is fixedly connected to the slider and can slide on the rear mold plate following the slider; An extrusion block is fixedly arranged on the side of the rear mold core; the extrusion block is arranged corresponding to the linkage member, and when the linkage member slides, the linkage member can push the extrusion block toward the lower fixed plate.