Demolding assembly for the inner side of a product

Abstract

The application discloses a product inner side H-shaped reverse buckle demolding assembly, which comprises a front mold, a rear mold, a ejector plate and a bottom plate, wherein the rear mold is provided with an inclined ejection cavity and a sliding groove, and the bottom of the inclined ejection cavity is further provided with a penetrating ejector rod through hole; a large inclined ejector, a small sliding block and a core pulling sliding block are slidably arranged on the side of the rear mold, wherein the core pulling sliding block is installed in the sliding groove and is driven to move by the inclined guide column on the front mold, and a push rod is fixedly installed on the side of the core pulling sliding block facing the large inclined ejector. The large inclined ejector is installed in the inclined ejection cavity, and the side of the large inclined ejector facing the core pulling sliding block is provided with a containing groove; the small sliding block is slidably installed in the containing groove, and the small sliding block is provided with a push rod through hole matched with the push rod; the bottom of the large inclined ejector is fixedly provided with an ejection rod, and the ejection rod sequentially penetrates the rear mold, the ejector plate downwards and is slidably connected to a sliding base through a first T-shaped block. The application has the advantages of simple structure, reduced core pulling assembly setting, reduced internal space occupation, ensured complete reverse buckle demolding, improved product yield, and improved injection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold reverse buckle demolding, in particular to a demolding assembly for product inside H-shaped reverse buckle. BACKGROUND

[0002] The forms of existing injection products are various, and many products are required to have functional reverse buckles during molding according to actual production and processing requirements. Figure 1 and Figure 2 As shown in the drawings, H-shaped reverse buckles are arranged on two opposite side walls inside the product cavity structure, and demolding is required after product injection molding under the premise of ensuring that the product is not damaged. SUMMARY

[0003] The purpose of the present application is to solve the above-mentioned problems in the prior art and provide a demolding assembly for product inside H-shaped reverse buckle.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present application is as follows: a demolding assembly for product inside H-shaped reverse buckle, comprising a front mold, a rear mold, a needle plate and a bottom plate, wherein the front mold and the rear mold can be opened and closed relative to each other to form a product injection cavity, the needle plate is located below the rear mold, and the bottom plate is located below the needle plate.

[0005] The core pulling slider is slidingly installed in the sliding groove, and a slanted guide column through hole is arranged on the core pulling slider, and a slanted guide column is fixedly installed on the front mold and slidingly inserted into the corresponding slanted guide column through hole.

[0006] The large inclined ejector is slidably installed in the inclined ejector cavity, and an embedded accommodation groove is arranged on the side of the large inclined ejector facing the core-pulling slider; the small slider is slidably installed in the accommodation groove, and a first I-shaped reverse-docking forming groove is formed between the top end of the small slider and the large inclined ejector; the small slider is provided with a pull rod through hole matched with the pull rod, and the pull rod is slidably inserted into the corresponding pull rod through hole; the bottom of the large inclined ejector is fixedly installed with an ejection rod, the ejection rod is slidably installed in the corresponding ejection rod through hole, and the ejection rod passes through the back mold and the ejector plate downwards in sequence, and the bottom end of the ejection rod is fixedly installed with a first T-shaped block; a sliding base is arranged between the ejector plate and the bottom plate, the sliding base is fixedly installed at the bottom of the ejector plate, and the sliding base is provided with a first T-shaped groove arranged at an inclined angle; and the first T-shaped block is slidably installed in the first trapezoidal groove.

[0007] Further, two side walls of the sliding groove of the back mold are respectively and symmetrically provided with sliding grooves, and a pressing plate is fixedly installed in the sliding grooves through counterbores; the width of the pressing plate is greater than that of the sliding groove; a guide sliding groove is formed between the pressing plate and the sliding groove; and a guide block is fixedly installed at the bottom of the sliding groove and is consistent with the direction of the guide sliding groove.

[0008] Both sides of the core-pulling slider are fixedly installed with integrally-formed sliders, the sliders are slidably installed in the corresponding guide sliding grooves; and the bottom of the core-pulling slider is provided with a guide groove, and the core-pulling slider is slidably sleeved on the guide block.

[0009] Further, the pull rod is fixedly arranged at an inclined downward inclination, and is fixedly installed on the core-pulling slider through the limiting pressing block and the corresponding counterbores.

[0010] Further, the small slider includes an upper half forming block and a lower half base, and is integrally formed and embedded in the accommodation groove, and the outer side surface of the small slider is flush with the outer side wall of the large inclined ejector; the forming block is provided with the same number of first I-shaped reverse-docking forming grooves, and the longitudinal sections of the forming block are all triangular; and the top end of the forming block and the large inclined ejector together enclose the first I-shaped reverse-docking forming groove.

[0011] The base of the small slider is provided with a second T-shaped groove on the side facing the large inclined ejector; and correspondingly, the inner side wall of the accommodation groove of the large inclined ejector is provided with a second T-shaped block matched with the second T-shaped groove.

[0012] Further, the top end of the large inclined ejector is further provided with a second I-shaped reverse-docking forming groove located on the opposite side of the first I-shaped reverse-docking forming groove; a sliding through hole is arranged below the second I-shaped reverse-docking forming groove in the large inclined ejector, and an inlay needle is installed in the sliding through hole; the top end of the inlay needle is a second I-shaped reverse-docking forming groove inner forming block, and the inlay needle and the large inclined ejector together enclose a complete I-shaped reverse-docking forming groove; and the bottom end of the inlay needle is fixed to the large inclined ejector through counterbores.

[0013] Further, the ejector rod passes through the corresponding long slot hole, and the length direction of the long slot hole is the same as the setting direction of the first T-shaped slot on the lower sliding base.

[0014] Further, the inclined rod is provided with a long slot hole, and the long slot hole is provided with a long slot hole.

[0015] Compared with the prior art, the present application has the following beneficial effects: the present application has simple structure, reduces the setting of the conventional mold stripping structure, reduces the setting of the core pulling assembly, reduces the occupied space and the overall mold specific gravity; at the same time, the setting of the small slider can prevent the stripping adhesion of the I-shaped inverted buckle, ensure the complete inverted buckle stripping effect, improve the product yield and improve the injection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The present application is aimed at the structure of the molded product;

[0017] Figure 2 The present application is aimed at the structure of the molded product; Figure 1 The structure of the A part in the present application is enlarged;

[0018] Figure 3 The present application is aimed at the structure of the molded product;

[0019] Figure 4 The present application is aimed at the structure of the molded product;

[0020] Figure 5 The present application is aimed at the structure of the molded product;

[0021] Figure 6 The present application is aimed at the structure of the molded product;

[0022] Figure 7 The present application is aimed at the structure of the molded product; Figure 6 The longitudinal center section view of the structure in the present application;

[0023] Figure 8 The present application is aimed at the structure of the molded product;

[0024] Figure 9 The present application is aimed at the structure of the molded product;

[0025] Figure 10 The present application is aimed at the structure of the molded product;

[0026] Figure 11Structure schematic view of the structure of the large inclined top containing the small slider side in the application;

[0027] Figure 12 Structure schematic view of the structure of the small slider in the application;

[0028] In the figure: A0, first I-shaped reverse buckle, A1, second I-shaped reverse buckle, A2, flange;

[0029] 1, front mold, 2, rear mold, 3, ejector plate, 4, bottom plate, 5, core-pulling slider, 6, inclined guide pillar, 7, large inclined top, 8, small slider, 9, sliding base, 10, ejection rod, 11, push rod, 12, first T-shaped block, 13, embedded needle, 21, sliding groove, 22, inclined top cavity, 23, sliding slot, 24, pressing plate, 25, guide block, 26, top rod through hole, 31, long slot, 51, slider, 52, inclined guide pillar through hole, 71, first I-shaped reverse buckle forming groove, 72, second I-shaped reverse buckle forming groove, 73, containing groove, 74, second T-shaped block, 75, brass oiling groove, 81, forming block, 82, base, 83, second T-shaped slot, 84, push rod through hole, 91, first T-shaped slot. DETAILED DESCRIPTION

[0030] It should be noted that in the description of the present application, the terms such as "upper", "lower", "left", "right", "front", "back", "top end", "bottom end", "inner side", "outer side" and the like indicate the orientation or positional relationship shown in the drawings, which is only a relationship word determined for the purpose of conveniently describing the structural relationship of the components in the present application, and is not a specific orientation that any component in the present application must have, and cannot be understood as a limitation on the present application.

[0031] In addition, in the present application, descriptions such as "first", "second" and the like are only for descriptive purposes, and are not intended to specifically indicate the order or sequence, nor to limit the present application, but only to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0032] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings:

[0034] A demolding assembly for the inner H-shaped reverse buckle of a product, mainly aiming at the product structure shown in Figure 1 and Figure 2 , a first H-shaped reverse buckle A0 and a second H-shaped reverse buckle A1 are respectively arranged on the inner wall of the cavity structure of the molded product, and are integrally injection molded with the product. In combination with Figures 3 to 7 , the demolding assembly comprises a front mold 1, a rear mold 2, a ejector plate 3 and a bottom plate 4, wherein the front mold 1 and the rear mold 2 can be opened and closed relative to each other, and form a product injection cavity when closed; the ejector plate 3 is located below the rear mold 2 and comprises an ejector face plate and an ejector bottom plate, wherein the ejector face plate is located on the upper surface of the ejector bottom plate; the bottom plate 4 is located below the ejector plate 3 and is spaced apart from the ejector plate 3. The upper surface of the rear mold 2 is provided with a sliding groove 21 and an inclined ejection cavity 22, which are arranged opposite to the cavity structure of the product, the sliding groove 21 and the inclined ejection cavity 22 are in communication with each other, and the inclined ejection cavity 22 is located at the rear side of the sliding groove 21; the left and right vertical side walls of the sliding groove 21 are provided with symmetrically sliding grooves 23, the upper side of the sliding groove 23 is fixedly installed with a pressing plate 24 through a countersunk bolt, the width of the pressing plate 24 is greater than the width of the sliding groove 23, so that the inner side edge of the pressing plate 24 extends out of the sliding groove 23 and forms a guide sliding groove between the sliding groove 21; a rectangular guide block 25 along the length direction of the sliding groove 21 is fixedly installed at the center position of the bottom surface of the sliding groove 21; a core pulling slider 5 is slidingly installed in the sliding groove 21, the left and right sides of the core pulling slider 5 are fixedly provided with integrally formed sliding blocks 51, which are respectively arranged in the corresponding guide sliding groove, and the bottom surface of the core pulling slider 5 is provided with a guide groove matched with the guide block 25, so that the core pulling slider 5 is slidingly installed in the sliding groove 21 through the cooperation of the two; the core pulling slider 5 is also provided with an inclined guide column through hole 52, and the bottom of the front mold 1 is fixedly installed with an inclined guide column 6 corresponding to the inclined guide column through hole 52, the inclined guide column 6 can be slidingly installed in the corresponding inclined guide column through hole 52. In combination with Figure 9 , the rear end side of the core pulling slider 5 is also fixedly installed with two parallel and spaced apart lever rods 11 through a limiting pressing block and a matched countersunk bolt, and the lever rods 11 are inclined downward.

[0035] A large inclined ejector 7 is slidingly installed in the inclined ejection cavity 22, the bottom of the inclined ejection cavity 22 is provided with a top rod through hole 26 penetrating through the upper and lower rear molds 2, and a guide sleeve is fixedly installed in each top rod through hole 26; a ejection rod 10 is fixedly installed at the bottom of the large inclined ejector 7, the ejection rod 10 sequentially penetrates through the rear mold 2 and the ejector plate 3 downward, and a first T-shaped block 12 is fixedly installed at the lower end of the ejection rod 10; in combination with Figure 11 , one side of the large inclined ejector 7 facing the core pulling slider 5 is provided with a receiving groove 73, a small slider 8 is slidingly installed in the receiving groove 73, andFigure 12 As shown, the small slider 8 comprises an integrally formed base 82 and formed blocks 81, wherein the formed blocks 81 are provided with two, the longitudinal section thereof is triangular, and are respectively located at the top of both ends of the base 82, and are adapted to the accommodating groove 73, and the inner side wall of the accommodating groove 73 is further fixedly installed with a second T-shaped block 74 which is arranged in the up-down direction, and the center of the side of the base 82 of the small slider 8 which faces the large inclined top 7 is provided with a second T-shaped groove 83 which is slidingly adapted to the second T-shaped block 74, and the inner side wall of the accommodating groove 73 is further fixedly installed with a brass oiling groove 75, so as to reduce the sliding friction damage between the small slider 8 and the large inclined top 7; when the small slider 8 is in the mold closing state, the whole is embedded in the accommodating groove 73, the outer side surface thereof is flush with the outer side wall of the large inclined top 7, and the top end of the formed block 81 of the small slider 8 and the large inclined top 7 just enclose the first I-shaped reverse buckle forming groove 71. The base 82 of the small slider 8 is further provided with a pull rod through hole 84 which is adapted to the pull rod 11, and is also arranged in an inclined manner, the end close to the large inclined top 7 is low, and the end close to the core pulling slider 5 is high, and the pull rod 11 provided on the core pulling slider 7 can be slidingly inserted into the corresponding pull rod through hole 84.

[0036] The sliding base 9 is further provided between the ejector plate 3 and the bottom plate 4, is located directly below the ejection rod 10, and is fixedly installed on the bottom surface of the ejector plate 3 through a countersunk head bolt, and is provided with a first T-shaped groove 91 thereon, which is adapted to the first T-shaped block 12 of the ejection rod 10. Figure 10 As shown, the first T-shaped groove 91 is arranged in an inclined manner, and the first T-shaped block 12 at the bottom end of the ejection rod 10 is slidingly installed in the corresponding first T-shaped groove 91; at the same time, the ejector plate 3 is provided with a long strip-shaped groove hole 31 which penetrates the thickness thereof, and the length direction thereof is arranged in the same direction as the first T-shaped groove 91, and is corresponding to the ejection rod 10, and the ejection rod 10 penetrates the long strip-shaped groove hole 31.

[0037] The top end of the large inclined top 7 is further provided with a second I-shaped reverse buckle forming groove 72 which is adapted to the second I-shaped reverse buckle A1 on the product, is located on the opposite side of the first I-shaped reverse buckle forming groove 71, and is also provided with two; the inside of the large inclined top 7 is provided with a sliding through hole below the second I-shaped reverse buckle forming groove 72, and a pin 13 is installed in the inside through a bolt and a spring, and the top end of the pin 13 is an inner formed block of the second I-shaped reverse buckle forming groove 72, and encloses a complete second I-shaped reverse buckle forming groove 72 with the large inclined top 7.

[0038] In use, the specific working principle is as follows: when the product is injection molded and demolded, the front mold 1 and the rear mold 2 are opened, the rear mold 2 is stationary, the front mold 1 moves upward, and in turn drives the inclined guide column 6 fixed thereon to move upward, as shown in Figure 8The vertical movement trajectory shown in FIG. 3C, because the inclined guide pillar 6 is arranged at an inclined angle, it moves vertically upward, thereby driving the core pulling slider 5 to move horizontally left along the sliding groove 21 on the rear mold 2; continue to combine Figure 8 The movement trajectory shown in FIG. 3C, wherein the horizontal direction is the movement direction of the core pulling slider 5, thereby driving the inclined lever 11 fixed thereon to move horizontally left, because the lever 11 is arranged at an inclined downward angle, it moves horizontally left, thereby driving the small slider 8 to slide in the accommodating groove 73, while being limited in sliding by the second T-shaped block 74 and the second T-shaped groove 83, so that the small slider 8 slides vertically downward, first, it is separated from the above-mentioned first I-shaped reverse buckle A0, preventing it from sticking; then the ejector plate 3 is ejected upward, driving the sliding base 9 to move upward synchronously, because the first T-shaped groove 91 thereon is arranged at an inclined angle, the first T-shaped block 12 inside it slides downward along it, driving the ejecting rod 10 to slide downward, thereby driving the large inclined ejector 7 to make a core pulling movement downward, so that the first I-shaped reverse buckle forming groove 71 and the second I-shaped reverse buckle forming groove 72 at the top end thereof are respectively separated from the corresponding first I-shaped reverse buckle A0 and the second I-shaped reverse buckle A1 on the product, achieving the demolding of the product. At the same time, the bottom of the small slider 8 is arranged at an inclined angle, the side close to the core pulling slider 5 is slightly higher, and a guide slider is fixedly installed thereon, so as to avoid the damage caused by the mold collision with the flange A2 on the product, ensuring the integrity of the product and improving the product quality.

[0039] The related technical features not mentioned or described in the above embodiments can be realized by adopting or referring to the related technical solutions in the prior art; the structure of the overall mold is set according to the actual production and processing needs of the product, and here only the structure of the mold for Figure 2 The demolding of the I-shaped reverse buckle in the product cavity structure is described, and other mold structures are not described here.

[0040] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application should also be within the protection scope of the present application.

Claims

1. A demolding assembly for an inner side I-shaped reverse buckle of a product, comprising a front mold, a rear mold, a ejector plate and a bottom plate, wherein the front mold and the rear mold can be opened and closed relative to each other to form a product injection cavity, the ejector plate is located below the rear mold, and the bottom plate is located below the ejector plate, characterized in that: The back mold side is slidably installed with a large inclined ejector pin, a small sliding block and a core pulling sliding block, and the back mold is provided with an inclined cavity and a sliding groove corresponding to the large inclined ejector pin, the small sliding block and the core pulling sliding block, the inclined cavity and the sliding groove are communicated with each other, and the bottom of the inclined cavity is provided with an ejector rod through hole penetrating through the back mold; ​ The core pulling sliding block is slidably installed in the sliding groove, and is provided with an inclined guide post through hole, and the front mold is fixedly installed with an inclined guide post corresponding to the inclined guide post through hole and slidably inserted into the inclined guide post through hole; the side of the core pulling sliding block facing the large inclined ejector pin is fixedly installed with a push rod; the push rod is fixedly arranged in an inclined downward manner, and is fixedly installed on the core pulling sliding block through a limiting pressing block and a corresponding countersunk bolt; The large inclined ejector pin is slidably installed in the inclined cavity, and the side of the large inclined ejector pin facing the core pulling sliding block is provided with an embedded accommodating groove, the small sliding block is slidably installed in the accommodating groove, and the top end of the small sliding block and the large inclined ejector pin form a first I-shaped reverse buckling forming groove; the small sliding block is provided with a push rod through hole matched with the push rod; the push rod through hole of the small sliding block is arranged in a downward inclined manner, the end close to the large inclined ejector pin is low, and the end close to the core pulling sliding block is high; the push rod is slidably inserted into the corresponding push rod through hole; the bottom of the large inclined ejector pin is fixedly installed with an ejection rod, the ejection rod is slidably installed in the corresponding ejector rod through hole, penetrates through the back mold and the ejector pin plate in sequence in a downward direction, and the bottom end of the ejection rod is fixedly installed with a first T-shaped block; a sliding base is arranged between the ejector pin plate and the bottom plate and is fixedly installed at the bottom of the ejector pin plate; the sliding base is provided with a first T-shaped groove arranged in an inclined angle; and the first T-shaped block is slidably installed in the first trapezoidal groove.

2. The in-mold side I-beam undercut demolding assembly of claim 1, wherein: Two side walls of the sliding groove on the back mold are respectively and symmetrically provided with sliding grooves, the sliding grooves are fixedly installed with pressing plates through countersunk bolts, the width of the pressing plates is greater than that of the sliding grooves, the pressing plates and the sliding grooves form guide sliding grooves, and the bottom of the sliding groove is fixedly installed with a guide block consistent with the direction of the guide sliding groove; The core pulling sliding block is fixedly installed with integrally formed sliding blocks on both sides, the sliding blocks are slidably installed in the corresponding guide sliding grooves; and the bottom of the core pulling sliding block is provided with a guide groove slidably sleeved on the guide block.

3. The in-mold side I-beam undercut demolding assembly of claim 1, wherein: The small sliding block integrally formed by an upper half forming block and a lower half base is embedded in the accommodating groove, and the outer side surface of the small sliding block is flush with the outer side wall of the large inclined ejector pin; the forming block is provided with the same number of first I-shaped reverse buckling forming grooves as the first I-shaped reverse buckling forming grooves, and the longitudinal sections of the forming blocks are triangular; and the top end of the forming block and the large inclined ejector pin form the first I-shaped reverse buckling forming groove. The side of the base of the small sliding block facing the large inclined ejector pin is provided with a second T-shaped groove, and the inner side wall of the accommodating groove of the large inclined ejector pin is provided with a second T-shaped block matched with the second T-shaped groove.

4. The in-mold side I-beam undercut demolding assembly of claim 3, wherein: The top end of the large inclined ejector pin is also provided with a second I-shaped reverse buckling forming groove opposite to the first I-shaped reverse buckling forming groove; a sliding through hole is arranged below the second I-shaped reverse buckling forming groove in the large inclined ejector pin, and an inlay pin is installed in the sliding through hole; the top end of the inlay pin is a second I-shaped reverse buckling forming groove inner forming block, and the large inclined ejector pin and the inlay pin jointly form a complete I-shaped reverse buckling forming groove; and the bottom end of the inlay pin is fixed to the large inclined ejector pin through a countersunk bolt.

5. The in-mold side I-beam undercut demolding assembly of claim 1, wherein: The top pin plate is provided with a through long strip-shaped slot hole, the ejection rod passes through the corresponding long strip-shaped slot hole, and the length direction of the long strip-shaped slot hole is the same as the setting direction of the first T-shaped slot on the lower sliding base.

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