Mold sticking prevention structure for injection molding demolding

Abstract

The utility model discloses an anti-sticking mold structure for injection molding demolding, which relates to the technical field of demolding of injection molding products, and adopts the technical scheme that the anti-sticking mold structure comprises a first sliding block, a second sliding block and a third sliding block, a first forming part is arranged on the first sliding block and corresponds to a partial structure of the inverted rib position; the second sliding block is in sliding connection with the fixed mold or the movable mold, and the second sliding block can move towards or away from the product; a second forming part is arranged on the second sliding block and corresponds to a part of the structure of the inverted buckle rib position. The first forming part and the second forming part correspond to the inverted buckling rib position in shape after being spliced. The anti-sticking mold structure has the beneficial effects that the anti-sticking mold structure is simple and reasonable in design and low in mold cost, the molding period is not increased although the inverted buckle of the product is released twice, the production efficiency is effectively ensured, the smooth demolding of the product is effectively ensured, the product can be prevented from being damaged by dragging and cracked by pulling by the sliding block, and the quality of the injection product is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection product demoulding technical field, concretely is a kind of injection demoulding anti-sticking mould structure. BACKGROUND

[0002] With the development of society and the continuous improvement of mould technology, the application of plastic products in automobile structure is also more and more, and the structure of some injection products is relatively complex, and in order to ensure the strength of product, many deep ribs need to be added on product, such as Figure 1 As shown in the product, the side of the product is relatively narrow, and there are many relatively deep ribs distributed on the narrow side, and the conventional slider integrated ejection of these inverted ribs is prone to sticking problem, thereby causing product damage, even cracking, causing mould test failure, and seriously affecting the vehicle loading time. INVENTION CONTENTS

[0003] In view of one of the deficiencies of the prior art, the utility model provides an injection demoulding anti-sticking mould structure to solve the sticking problem during injection product demoulding.

[0004] To achieve the above object, the utility model provides the following technical scheme: an injection demoulding anti-sticking mould structure, comprising a fixed mould and a movable mould, the movable mould can move towards or away from the fixed mould, a slider mechanism corresponding to the inverted rib of product is arranged between the fixed mould and the movable mould, and the slider mechanism comprises:

[0005] A first slider is slidably connected with the fixed mould or the movable mould, and the first slider can move towards or away from the product;A first forming part is arranged on the first slider, and the first forming part corresponds to the structure of the inverted rib;

[0006] A second slider is slidably connected with the fixed mould or the movable mould, and the second slider can move towards or away from the product;A second forming part is arranged on the second slider, and the second forming part corresponds to the structure of the inverted rib;

[0007] The shape of the first forming part and the second forming part corresponds to the shape of the inverted rib after splicing.

[0008] Preferably, the first slider and the second slider are slidably connected with the movable mould;Further comprising:

[0009] A first driving assembly is linked with the first slider and can drive the first slider to slide;

[0010] A second driving assembly is linked with the second slider and can drive the second slider to slide.

[0011] Preferably, the first driving assembly comprises:

[0012] A first driving member is provided with an independent power source, and the driving member is linked with the first slider.

[0013] Preferably, the second driving assembly comprises:

[0014] a second driving member fixedly connected with the fixed mold, and linked with the second sliding block, so that the second driving member drives the second sliding block to slide when the movable mold moves towards or away from the fixed mold.

[0015] Preferably, the first driving member is a telescopic cylinder, and the movable end of the telescopic cylinder is linked with the first sliding block.

[0016] The second driving member is an inclined guide rod, and the upper end of the rod body of the guide rod is fixedly connected with the fixed mold.

[0017] The second sliding block is provided with a guide hole corresponding to the second driving member.

[0018] Preferably, the first sliding block is provided with a through slot in the middle part, and the second sliding block is slidably connected with the first sliding block through the through slot.

[0019] The second forming part of the second sliding block corresponds to the middle region of the inverted buckle rib position.

[0020] The first forming part of the first sliding block corresponds to the two side regions of the inverted buckle rib position.

[0021] Preferably, the injection molding machine further comprises:

[0022] a sliding block seat slidably connected with the movable mold, and linked with the first driving member on one side;

[0023] the sliding block seat is fixedly connected with the first sliding block and slidably connected with the second sliding block.

[0024] Preferably, the injection molding machine further comprises:

[0025] a fixed seat fixedly connected with the movable mold, and the first driving member is fixedly arranged on the fixed seat, and the sliding block seat is slidably connected with the fixed seat.

[0026] Preferably, the sliding block seat is provided with a through hole, and the through hole of the sliding block seat corresponds to the through slot of the first sliding block; after the second sliding block penetrates through the sliding block seat and the first sliding block, the second forming part is close to the inverted buckle rib position of the product.

[0027] Preferably, the injection molding machine further comprises:

[0028] a resilient member connected with the second sliding block, and the resilient member is in a compressed state when the fixed mold and the movable mold are closed.

[0029] Compared with the prior art, the present application has the following advantages: the anti-sticking mold structure is simple and reasonable in design, the mold cost is low, the product is taken out twice, but the forming cycle is not increased, and the production efficiency is effectively guaranteed. Through the structure of the present application, the relatively complex undercut rib position is demolded in different areas, which ensures the smooth demolding of the product, prevents the slider from damaging and cracking the product, and ensures the quality of the injection molded product. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The product structure of the embodiment of the present application is shown in the figure.

[0031] Figure 2 The mold section of the embodiment of the present application is shown in the figure.

[0032] Figure 3 The structure of the embodiment of the present application is shown in the figure.

[0033] Figure 4 The combination of the slider and the product of the embodiment of the present application is shown in the figure.

[0034] In the figure:

[0035] 100, product; 101, rib position;

[0036] 10, fixed mold; 20, movable mold;

[0037] 1, first slider; 2, second slider; 3, first driving assembly; 31, first driving piece; 4, second driving assembly; 41, second driving piece; 5, slider seat; 6, fixed seat; 61, pressing strip; 62, limiting block; 63, limiting column; 7, elastic piece. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] Please refer to Figures 2-4 The present application provides the following technical solutions:

[0040] An injection molding demolding anti-sticking mold structure, comprising a fixed mold 10 and a movable mold 20, the movable mold 20 can move towards or away from the fixed mold 10, a corresponding Figure 1The slider mechanism of the undercut rib position 101 of the intermediate product 100 comprises a first slider 1 and a second slider 2. The first slider 1 is provided with a first forming part, and the second slider 2 is provided with a second forming part. The first forming part and the second forming part correspond to the partial structure of the undercut rib position 101 respectively, and the first forming part and the second forming part correspond to the shape of the entire undercut rib position 101 after being spliced. The first slider 1 and the second slider 2 are both in sliding connection with the movable die 20, and both can move towards or away from the product 100.

[0041] Through the scheme of the structure, the first slider 1 and the second slider 2 jointly form the undercut rib position 101 of the product 100, and then the first slider 1 and the second slider 2 are separately separated from the product 100. Because the two sliders are separated in different time periods, the pulling force borne by the undercut rib position 101 in a short time is reduced, and because the two sliders correspond to the partial structure of the undercut rib position 101 respectively, the undercut rib position 101 is not prone to the problem of sticking to the die during demolding.

[0042] On the basis of the above-mentioned embodiments, the distribution mode of the first forming part and the second forming part is as shown in Figure 4 The second forming part of the second slider 2 corresponds to the middle region of the undercut rib position 101, and the first forming part of the first slider 1 corresponds to the two side regions of the undercut rib position 101. The middle part of the first slider 1 is provided with a through slot, and the second slider 2 is in sliding connection with the first slider 1 through the through slot.

[0043] During demolding, the second slider 2 first slides away from the undercut rib position 101, and then the first slider 1 slides away from the undercut 101. Because the second forming part corresponds to a relatively small part of the product rib position, the product is relatively higher in temperature at the moment of just opening the mold, and therefore the second forming part of the second slider 2 is arranged between the first forming parts. The second slider 2 first demolds and will not cause deformation of the product rib position.

[0044] On the basis of the above-mentioned embodiments, corresponding to the driving of the first slider 1 and the second slider 2, the first driving assembly 3 and the second driving assembly 4 are respectively arranged.

[0045] The first driving assembly 3 comprises a first driving member 31 which can be used as an independent power source. The first driving member 31 can be selected from a gas cylinder, a hydraulic cylinder or an electric push rod, etc., and the power thereof is controlled independently. The active end of the first driving member 31 is linked with the first slider 1, and can drive the first slider 1 to slide. The second driving assembly 4 comprises a second driving member 41 which is fixedly connected with the fixed die 10 and is linked with the second slider 2. The second driving member 4 realizes linkage with the second slider 2 through the action of opening and closing the mold.

[0046] As mentioned above, the second slide 2 is first separated from the product 100 when the mold is opened, so the second slide 2 is directly linked to the movement of the movable mold 2. The first driving member 31 is a hydraulic cylinder, when the mold is opened to a certain extent, the second slide 2 has been separated from the product 100, at this time the first driving member 31 starts to act, and drives the first slide 1 to separate from the product 100.

[0047] On the basis of the above-mentioned embodiment, as shown in Figure 2 The second driving member 41 is an inclined guide rod, the upper end of the rod body is fixedly connected with the fixed mold 1 through a guide rod seat. The upper end of the guide rod seat is fixedly connected with the fixed mold 1 through a bolt, and a boss is arranged on one side of the guide rod seat. The second driving member 41 is provided with a notch corresponding to the boss, and the boss is clamped in the notch of the second driving member 41 from bottom to top. A guide hole corresponding to the second driving member 41 is formed in the second slide 2.

[0048] Under the cooperation of the rod body of the second driving member 41 and the guide hole of the second slide 2, and in combination with the limiting structure arranged on the movement track of the second slide 2, in the movement process of driving the second slide 2 to move away from the fixed mold 1 when the movable mold 2 moves away from the fixed mold 1, the second slide 2 moves away from the undercut rib position 101 of the product 100 under the action of the second driving member 41.

[0049] On the basis of the above-mentioned embodiment, a slide block seat 5 is arranged in sliding connection with the movable mold 2, one side of the slide block seat 5 is linked with the first driving member 31, and one side of the slide block seat 5 is fixedly connected with the first slide 1, so that the extension and retraction of the piston rod of the first driving member 31 can drive the first slide 1 to slide through the slide block seat 5. A through hole is formed in the middle of the slide block seat 5, and the second slide 2 is in sliding connection with the through hole. By means of this structure, the slide block seat 5 itself can also be called a limiting structure of the movement path of the second slide 2.

[0050] On the basis of the above-mentioned embodiment, a fixed seat 6 is fixedly arranged on the movable mold 2, and the first driving member 31 is fixedly arranged on the fixed seat 6. Two pressing strips 61 are symmetrically arranged on the upper side of the fixed seat 6, and a slide is formed between the pressing strips 61 and the upper surface of the fixed seat 6. The lower part of the slide block seat 5 is provided with side bosses, and the side bosses are located in the slide formed by the pressing strips 61 and the fixed seat 6. The slide block seat 5 is in sliding connection with the fixed seat 6 through the side bosses and the pressing strips 61.

[0051] On the basis of the above-mentioned embodiment, a notch with a flat surface is arranged on one side of the rod body of the piston rod of the first driving member 31, and a limiting block 62 is fixedly arranged on the fixed seat 6. One side of the limiting block 62 is attached to the notch of the rod body of the piston rod, so as to prevent the piston rod from rotating.

[0052] Further, a limiting post 63 is arranged on the side of the slider base 5 facing the first driving member 31, and a top plate is fixed on the upper side of the fixed base 6, and a through slot is arranged in the middle of the top plate, and the piston rod of the first driving member 31 passes through the through slot in the middle of the top plate, and the limiting post 63 is arranged corresponding to the top plate, and when the slider base 5 slides away from the product 100, the limiting post 63 can abut against the top plate, thereby limiting the moving position of the slider base 5.

[0053] On the basis of the above-mentioned embodiments, the limiting post 63 is a cylindrical block, and a cavity is arranged in the middle of the limiting post 63, and a sensing member such as a contact switch can be arranged in the cavity, and the contact switch can be electrically connected with the oil path control assembly of the first driving member 31, thereby forming a control loop for the first driving member 31.

[0054] On the basis of the above-mentioned embodiments, the through hole of the slider base 5 corresponds to the through slot of the first slider 1, and both are “T”-shaped holes, and the second slider 2 is also provided with a “T”-shaped block corresponding to the structure of the through hole of the slider base 5 and the through slot of the first slider 1; after the second slider 2 passes through the slider base 5 and the first slider 1, the second forming part is located close to the undercut rib position 101 of the product 100.

[0055] On the basis of the above-mentioned embodiments, the side of the second slider 2 facing the product 100 is further provided with an elastic member 7, and the elastic member 7 is a spring, and one side of the spring is connected with the second slider 2, and the other side can be fixedly connected with the internal structure of the slider base 5 or the internal structure of the movable mold 2 according to actual conditions. When the fixed mold 10 and the movable mold 20 are closed, the elastic member 7 is in a compressed state. When the mold is opened, the elastic member 7 can provide an initial power to the second slider 2, thereby facilitating the sliding of the second slider 2. When the mold is completely opened, the elastic member 7 is in a pre-pressed state, and the elastic member 7 plays a role of positioning the second slider 2.

[0056] On the basis of the above-mentioned embodiments, wear-resistant plates are arranged on the upper side of the fixed base 6 and the lateral side of the slider base 5, respectively, so as to extend the service life of the equipment.

[0057] In the description of the present application and the embodiments thereof, it should be understood that the terms “top”, “bottom”, “height” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0058] In the present application and embodiments thereof, unless specifically defined otherwise, the terms "set", "mounted", "connected", "linked", "fixed" and the like are to be construed broadly in accordance with the principles of equivalence in the art, such that for example, "connected" can mean fixedly connected, or removably connected, or integrally connected, or mechanically connected, or electrically connected, or communicatively connected, or directly connected, or indirectly connected, or connected via an intermediary, or interconnected, or interacting, or related through the interconnection of two or more elements. Those skilled in the art will appreciate that the terms "set", "mounted", "connected", "linked", "fixed" and the like, as used in the present application, are not to be construed as limiting the present application to a specific arrangement, but rather, are to be construed broadly in accordance with the principles of equivalence in the art.

[0059] In the present application and embodiments thereof, unless specifically defined otherwise, a first feature "on", "above", or "under" a second feature can include the first and second features being directly in contact, or the first and second features not being directly in contact but being in contact through another feature between them. Also, a first feature "on", "above", and "over" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. A first feature "under", "below", and "underneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0060] The above disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of simplicity of the present application, the description of a particular embodiment of the application has been divided into sections, such as the Detailed Description. Each of these sections can include multiple embodiments of the present application. However, the description of these sections should not be interpreted as an indication that a particular embodiment or feature is required or essential to the practice of the application. In addition, the use of section headings is not intended to limit the scope of the application. Furthermore, the use of the terms "a", "an", "the", "at least one", and "one or more" are intended to be interpreted to include both singular and plural forms, unless otherwise indicated by the context.

[0061] While the preferred embodiments of the application have been described, it should be understood that various modifications, substitutions, and changes can be made by those skilled in the art to which the application pertains without departing from the spirit of the application. Accordingly, the appended claims are intended to cover all such modifications and changes as fall within the scope of the application.

[0062] It is apparent that a person skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope thereof. Thus, if these modifications and changes fall within the scope of the claims and their equivalents, it is intended to include them in the present application.

Claims

1. A mold release and anti-sticking structure for injection molding, comprising a fixed mold and a moving mold, wherein the moving mold can move toward or away from the fixed mold, and a slider mechanism corresponding to the undercut ribs of the product is provided between the fixed mold and the moving mold, characterized in that, The slider mechanism includes: The first slider is slidably connected to the fixed mold or the moving mold, and the first slider can move toward or away from the product; the first slider is provided with a first forming part, which corresponds to a part of the structure of the undercut rib; The second slider is slidably connected to the fixed mold or the moving mold, and the second slider can move toward or away from the product; the second slider is provided with a second forming part, which corresponds to part of the structure of the undercut rib; The shape of the first forming part and the second forming part after being assembled corresponds to the shape of the undercut rib.

2. The injection molding demolding anti-sticking structure as described in claim 1, characterized in that, Both the first and second sliders are slidably connected to the moving mold; it also includes: The first driving component is linked to the first slider and can drive the first slider to slide. The second drive component is linked to the second slider and can drive the second slider to slide.

3. The injection molding demolding and anti-sticking structure as described in claim 2, characterized in that, The first driving component includes: The first driving component has an independent power source and is linked with the first slider.

4. The injection molding demolding and anti-sticking structure as described in claim 3, characterized in that, The second driving component includes: The second driving component is fixedly connected to the fixed mold. The second driving component and the second slider are linked. When the moving mold moves toward or away from the fixed mold, the second driving component drives the second slider to slide.

5. The injection molding demolding and anti-sticking structure as described in claim 4, characterized in that, The first driving component is a retractable cylinder, and its movable end is linked with the first slider. The second driving component is an inclined guide rod, the upper end of which is fixedly connected to the fixed mold; The second slider has a guide hole corresponding to the second driving component.

6. The injection molding demolding and anti-sticking structure as described in claim 5, characterized in that, The first slider has a through groove in the middle, and the second slider is slidably connected to the first slider through the through groove; The second forming part of the second slider corresponds to the middle area of ​​the undercut rib; The first forming part of the first slider corresponds to the two sides of the undercut rib.

7. The injection molding demolding and anti-sticking structure as described in claim 6, characterized in that, Also includes: The slider seat is slidably connected to the moving mold, and one side of the slider seat is linked with the first driving component; The slider base is fixedly connected to the first slider and slidably connected to the second slider.

8. The injection molding demolding anti-sticking structure as described in claim 7, characterized in that, Also includes: The fixed base is fixedly connected to the moving mold, the first driving component is fixedly mounted on the fixed base, and the slider seat is slidably connected to the fixed base.

9. The injection molding demolding anti-sticking structure as described in claim 7, characterized in that, The slider seat has a through hole, which corresponds to the through groove of the first slider; after the second slider passes through the slider seat and the first slider, the second forming part is close to the undercut rib of the product.

10. The injection molding demolding anti-sticking structure as described in claim 7, characterized in that, Also includes: The elastic element is connected to the second slider. When the fixed mold and the moving mold are closed, the elastic element is in a compressed state.

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