Large-stroke composite-angle back-off inclined-pulling demolding mechanism for injection mold

Abstract

The utility model discloses a large stroke composite angle backoff inclined pulling demoulding mechanism of an injection mould, which comprises an inclined pulling slide block, an inclined pulling slide rail, an inclined guide pillar and an elastic component, the inclined pulling slide rail is fixed at the top of a rear mould core, and the inclined pulling slide rail has a first inclined angle rotating around a Y axis and a second inclined angle rotating around a Z axis; the inclined pulling sliding block is installed on the inclined pulling sliding rail in a sliding mode, the inclined pulling sliding block is provided with a protruding tongue which extends into the cavity and is used for forming an inverted buckle part of a product, and the elastic component exerts elastic acting force on the inclined pulling sliding block in the demolding direction; the inclined guide column is fixed to the bottom of the front mold core, and when the front mold core is opened relative to the rear mold core, the front mold core drives the inclined pulling sliding block to move along the inclined pulling sliding rail through matched use of the inclined guide column and the elastic component, so that the protruding tongue is separated from the back-off part. The large-stroke demolding mechanism can realize large-stroke demolding action, accurately adapts to a composite angle of a back-off part, reduces the failure rate of the mold, and shortens the molding period.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mould technical field, especially relate to a big stroke compound angle reverse buckle slanting extraction demoulding mechanism of injection mould. BACKGROUND

[0002] Injection mould plays a vital role in the production of plastic products. However, in the injection molding process, when the plastic product has a large stroke, a composite angle reverse buckle structure, the demolding problem has always been a problem in mold design and manufacturing.

[0003] The traditional injection mold demolding mechanism often has the following deficiencies when dealing with such reverse buckle structure: Figure 1 As shown in the drawings, the existing large stroke composite angle reverse buckle generally adopts a slanting ejection mechanism for molding and demolding, but in the case where the demolding angle is greater than 18°, the slanting ejection mechanism demolding is limited by the angle, its service life and stability are greatly reduced, it is easy to break, the mass production is poor, the mold repair cost is high; At the same time, due to the large demolding angle, the ejection speed setting has to be very slow, resulting in a long molding cycle, which is a big pain point for large stroke composite angle reverse buckle products. Therefore, it is necessary to improve the existing technology to overcome the defects in the prior art. CONTENT OF THE UTILITY MODEL

[0004] The problem to be solved by the utility model is to provide a big stroke compound angle reverse buckle slanting extraction demolding mechanism of injection mould, so as to overcome the defects of the prior art, such as easy breaking, poor mass production, high mold repair cost and long molding cycle.

[0005] The utility model discloses a big stroke composite angle reverse buckle oblique draw demolding mechanism of injection mold, be provided with between the front die core and rear die core of injection mold, wherein the front die core with rear die core between is equipped with the cavity for the product of forming, with two mutually perpendicular side of the upper side of front die core is in the direction respectively X axle and Y axle, and the direction perpendicular to X axle with Y axle is Z axle. The big stroke composite angle reverse buckle oblique draw demolding mechanism of injection mold includes: oblique draw sliding block, oblique draw sliding rail, inclined guide column and elastic part, the top of rear die core is fixed with oblique draw sliding rail, and oblique draw sliding rail has the first inclination angle of rotating around Y axle, and has the second inclination angle of rotating around Z axle simultaneously, oblique draw sliding block is slidably installed on oblique draw sliding rail, and oblique draw sliding block is equipped with the tongue of reverse buckle part for forming the product in the cavity, and the elastic part exerts the elastic force of demolding direction to oblique draw sliding block, the bottom of front die core is fixed with inclined guide column, when the front die core opens relative to rear die core, the front die core is driven oblique draw sliding block along oblique draw sliding rail through the cooperation of inclined guide column with elastic part to make the tongue get out of reverse buckle part.

[0006] As a further improvement of the utility model, a limiting stop column is further fixed on the rear die core, and the limiting stop column is used for stopping the oblique draw sliding block to limit the movement stroke thereof.

[0007] As a further improvement of the utility model, the elastic part is a spring, a first spring positioning groove is arranged on the rear die core, a spring positioning pin is fixed in the first spring positioning groove, a second spring positioning groove is arranged on the oblique draw sliding block and opposite to the first spring positioning groove, and the elastic part is sleeved on the spring positioning pin and elastically abuts against the first spring positioning groove and the second spring positioning groove at two ends thereof.

[0008] As a further improvement of the utility model, an inclined guide hole is arranged on the oblique draw sliding block, and the inclined guide column is inserted into the inclined guide hole and gap-fitted.

[0009] As a further improvement of the utility model, the oblique draw sliding rail is a T-shaped sliding rail, a T-shaped sliding groove is arranged on the bottom of the oblique draw sliding block and slidably fitted with the oblique draw sliding rail, a waist-shaped hole is arranged on the oblique draw sliding rail, and the lower end of the inclined guide column extends into the waist-shaped hole.

[0010] As a further improvement of the utility model, the big stroke composite angle reverse buckle oblique draw demolding mechanism of injection mold further comprises an inclined spade base, and the inclined guide column is fixedly installed on the bottom of the front die core through the inclined spade base.

[0011] As a further improvement of the utility model, the bottom of the inclined shovel base is provided with a first inclined pressing surface, the top of the inclined extraction sliding block is provided with a second inclined pressing surface, when the front mold core and the rear mold core are in the mold closing state, the first inclined pressing surface completely matches with the second inclined pressing surface.

[0012] As a further improvement of the utility model, the top of the rear mold core is further fixed with a wear-resistant insert made of hard alloy material, the wear-resistant insert is provided with a insertion slot, and the tab is slidably inserted into the insertion slot.

[0013] As a further improvement of the utility model, the product is an arched cover structure, and the concave cavity is arranged towards the rear mold core; a window is arranged at the top of the product, and is used for providing a moving space for the inclined extraction sliding block.

[0014] The utility model discloses a kind of injection mould large-stroke compound angle reverse buckle inclined extraction demolding mechanisms, by being provided with inclined guide column on front mold core, being provided with inclined extraction sliding rail and inclined extraction sliding block along compound angle distribution on rear mold core, and inclined extraction sliding block side is provided with spring type structure of disconnecting, in the process of forming opening mold, using elastic component and inclined guide column makes inclined extraction sliding block and product disconnect, it can realize the demolding action of large stroke, easily cope with product with large-stroke reverse buckle structure, and accurately adapt to the compound angle of reverse buckle part, realize smooth, no jamming demolding process, effectively avoid the difficulty of demolding and product damage caused by angle mismatch, reduce mould failure rate and maintenance / maintenance cost, shorten mould forming cycle, also improve mould mass production stability and quality stability. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a perspective view of the existing inclined ejector mechanism;

[0017] Figure 2 It is a perspective view of the product formed by the injection mould of the utility model;

[0018] Figure 3 It is a perspective view of the injection mould large-stroke compound angle reverse buckle inclined extraction demolding mechanism of the utility model in mold closing state;

[0019] Figure 4 It is a perspective view of the injection mould large-stroke compound angle reverse buckle inclined extraction demolding mechanism of the utility model in mold opening state;

[0020] Figure 5 It is the sectional view of the large-stroke composite-angle reverse-docking slant-pulling demolding mechanism of the injection mold of the utility model;

[0021] Figure 6 It is the sectional view of the large-stroke composite-angle reverse-docking slant-pulling demolding mechanism of the injection mold of the utility model; Figure 5 It is the enlarged view of the middle B part;

[0022] Figure 7 It is the perspective view of the slant-pulling sliding block, slant-pulling sliding rail and wear-resistant insert in the utility model;

[0023] Figure 8 It is the perspective view of the slant-pulling sliding block, slant-pulling sliding rail and wear-resistant insert in the utility model from another visual angle.

[0024] The following description is made in conjunction with the accompanying drawings:

[0025] 1, front mold core; 2, rear mold core; 3, product; 301, window; 4, slant-pulling sliding block; 401, tongue; 402, slant guide hole; 403, T-shaped sliding groove; 404, second slant pressing surface; 5, slant-pulling sliding rail; 501, waist-shaped hole; 6, slant guide column; 7, elastic component; 8, limiting stop column; 9, spring positioning pin; 10, slant spade base; 1001, first slant pressing surface; 11, wear-resistant insert; A, reverse-docking part. DETAILED DESCRIPTION

[0026] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The embodiments of the present application will be described below in conjunction with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The present application can also be implemented or applied by other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. 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.

[0028] It is to be understood that the embodiments described hereinbelow within the scope of the appended claims. It will be apparent to one of ordinary skill in the art that aspects described herein can be implemented differently, and that any structure and / or function described herein is merely illustrative. Based on the teachings provided herein, a person of ordinary skill in the art will appreciate that one aspect described herein can be implemented independent of any other aspects, and that two or more of these aspects can be combined in various ways. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, such an apparatus can be implemented and / or such a method can be practiced using other structure and / or functionality in addition to or other than one or more of the aspects set forth herein.

[0029] It is also important to note that the drawings illustrated in the examples provided herein are for the purpose of illustrating embodiments and are not to be construed as limiting the application. The drawings provided herein are not to be construed as being to scale with one another, with the drawings, or with any other drawings. In fact, the dimensions of the drawings are chosen primarily for convenience and clarity of presentation.

[0030] In addition, in the following description, numerous specific details are provided for a thorough understanding. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of these specific details.

[0031] The technical solutions provided by the embodiments of the present application are described below in combination with the drawings.

[0032] The utility model provides a kind of injection mold big-stroke composite angle reverse buckle slanting extraction mechanism, it is set between the front die 1 and rear die 2 of injection mold, for smoothly from product 3 on when injection mold opens, realize the molding and demolding of big-stroke composite angle reverse buckle product.

[0033] Among them, front die 1 and rear die 2 are equipped with cavity for forming product 3. For easy understanding, as shown in Figure 3 As shown, define the direction of two mutually perpendicular sides on the upper side of front die 1 as X axis and Y axis respectively, and the direction perpendicular to X axis and Y axis is Z axis.

[0034] Referring to Figures 2 to 8The utility model discloses a large stroke composite angle reverse buckle slanting extraction demoulding mechanism of injection mould includes: slanting extraction sliding block 4, slanting extraction sliding rail 5, slanting guide column 6 and elastic component 7. Among them, slanting extraction sliding rail 5 is fixed at the top of back mould kernel 2, and slanting extraction sliding rail 5 has the first inclination angle of rotating around Y axle, simultaneously has the second inclination angle of rotating around Z axle. Slanting extraction sliding block 4 is slidably installed on slanting extraction sliding rail 5, and slanting extraction sliding block 4 is equipped with the tongue 401 of reverse buckle position A for forming product 3 in cavity. The utility model discloses slanting extraction sliding rail 5 adopts this angle design, the purpose is in mould opening, can let slanting extraction sliding block 4 along slanting extraction sliding rail 5 towards this specific angle sliding, further make slanting extraction sliding block 4 from product 3 with the reverse buckle position A of composite angle extraction.

[0035] Further, the elastic component 7 is arranged between the back mould kernel 2 and the slanting extraction sliding block 4, and the elastic component 7 exerts an elastic force on the slanting extraction sliding block 4 in the direction of demoulding. The slanting guide column 6 is fixed at the bottom of the front mould kernel 1 and is inserted into the slanting extraction sliding block 4. When the front mould kernel 1 is opened relative to the back mould kernel 2, the front mould kernel 1 drives the slanting extraction sliding block 4 to move along the slanting extraction sliding rail 5 by cooperating with the elastic component 7 through the slanting guide column 6, so that the tongue 401 is demoulded from the reverse buckle position A. By adopting the structure design, the utility model can realize a large-stroke demoulding action, easily cope with the product 3 with a large-stroke reverse buckle structure, and accurately adapt to the composite angle of the reverse buckle position A, realize a smooth and non-stuck demoulding process, effectively avoid demoulding difficulty and product damage caused by angle mismatch, reduce mould failure rate and maintenance cost, shorten mould forming cycle, and improve mould mass production stability and quality stability.

[0036] In the embodiment, the elastic component 7 is a spring. As shown in Figs. Figure 5 and Figure 6 The back mould kernel 2 is provided with a first spring positioning groove, and the back mould kernel 2 is fixed with a spring positioning pin 9 in the first spring positioning groove. The slanting extraction sliding block 4 is provided with a second spring positioning groove opposite to the first spring positioning groove. The elastic component 7 is sleeved on the spring positioning pin 9, and the two ends of the elastic component 7 are elastically abutted in the first spring positioning groove and the second spring positioning groove respectively, so that the elastic component 7 can exert an elastic force on the slanting extraction sliding block 4 in the direction of demoulding. In the mould closing state, the slanting extraction sliding block 4 cooperates with the back mould kernel 2 to compress the elastic component 7 to store energy.

[0037] Further, the slanting extraction sliding block 4 is provided with a slanting guide hole 402, and the slanting guide column 6 is inserted into the slanting guide hole 402. Since the slanting extraction sliding block 4 moves along the composite angle during the demoulding process, in order to avoid interference between the slanting extraction sliding block 4 and the slanting guide column 6, the utility model leaves a certain gap between the slanting guide column 6 and the slanting guide hole 402, so as to allow the slanting extraction sliding block 4 to move along the composite angle (or along the slanting extraction sliding rail 5).

[0038] In addition, the injection mold large-stroke composite angle reverse clamping and inclined stripping mechanism further comprises an inclined shovel base 10, and the inclined guide column 6 is fixedly installed at the bottom of the front mold core 1 through the inclined shovel base 10.

[0039] It is worth mentioning that, as shown in Figure 6 and Figure 7 , the bottom of the inclined shovel base 10 is provided with a first inclined pressing surface 1001, and the top of the inclined stripping slider 4 is provided with a second inclined pressing surface 404, and the inclination angle of the second inclined pressing surface 404 is consistent with that of the first inclined pressing surface 1001. When the front mold core 1 and the rear mold core 2 are in the mold closing state, the first inclined pressing surface 1001 is completely attached to the second inclined pressing surface 404. The present application relies on the inclined shovel base 10 to press the inclined stripping slider 4, so as to ensure that the position of the inclined stripping slider 4 is accurate in the mold closing state, and the forming quality of the product 3 is guaranteed. When the front mold core 1 is opened relative to the rear mold core 2, the front mold core 1 synchronously drives the inclined shovel base 10 and the inclined guide column 6 to move, at the same time, the inclined stripping slider 4 slides along the inclined stripping rail 5 under the strong elastic force of the elastic component 7, synchronous action is realized, and the product 3 is prevented from being pulled white or injured to cause appearance defects.

[0040] In addition, the rear mold core 2 is further fixed with a limiting stop column 8, the limiting stop column 8 is located on the side of the inclined stripping slider 4 towards the demolding direction, and the limiting stop column 8 is used for stopping the inclined stripping slider 4 to limit the movement stroke thereof.

[0041] Referring to Figure 7 , the inclined stripping rail 5 in the embodiment adopts a T-shaped slide rail, the bottom of the inclined stripping slider 4 is provided with a T-shaped slide groove 403, and the inclined stripping slider 4 is in sliding fit with the inclined stripping rail 5 through the T-shaped slide groove 403, so as to improve the precision and ensure the stability of the movement of the inclined stripping slider 4. As shown in Figure 8 , the inclined stripping rail 5 is provided with a waist-shaped hole 501, and the lower end of the inclined guide column 6 extends into the waist-shaped hole 501, and the waist-shaped hole 501 is used for providing a movement space for the inclined guide column 6 during the mold opening and closing process.

[0042] Continuing to refer to Figure 7 , the top of the rear mold core 2 is further fixed with a wear-resistant insert 11 made of hard alloy material, the wear-resistant insert 11 is provided with a slot, the tab 401 is slidably inserted into the slot, and is used for reducing the wear caused by repeated movement of the inclined stripping slider 4.

[0043] Referring to Figure 2 and Figure 4 , the product 3 in the present application is an arched cover structure, and the concave cavity thereof is arranged towards the rear mold core 2, and meanwhile, the top of the product 3 is provided with a window 301, which can provide a movement space for the inclined stripping slider 4, so that the injection mold large-stroke composite angle reverse clamping and inclined stripping mechanism of the present application can be applied to the product 3 with limited internal space.

[0044] It can be seen that the large-stroke composite angle inverted buckle and slant extraction die mechanism of injection mold is provided, the slant guide pillar 6 is arranged on the front mold core 1, the slant extraction slide rail 5 and the slant extraction slide block 4 distributed along the composite angle are arranged on the rear mold core 2, and the spring type separation structure is arranged on one side of the slant extraction slide block 4, the slant extraction slide block 4 and the product 3 are separated by the elastic component 7 and the slant guide pillar 6 in the molding opening process, the demolding action of large stroke can be realized, the product 3 with large stroke inverted buckle structure can be easily coped with, and the composite angle of the inverted buckle part A can be accurately adapted, the smooth and non-stuck demolding process is realized, the demolding difficulty and product damage caused by the angle mismatch are effectively avoided, the mold failure rate and maintenance / maintenance cost are reduced, the mold forming cycle is shortened, and the mold mass production stability and quality stability are improved.

[0045] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A large-stroke composite angle undercut and inclined stripping mechanism of an injection mold, arranged between a front mold cavity (1) and a back mold cavity (2) of the injection mold, wherein a cavity for molding a product (3) is arranged between the front mold cavity (1) and the back mold cavity (2), the directions of two mutually perpendicular sides on the upper side of the front mold cavity (1) are respectively the X-axis and the Y-axis, and the direction perpendicular to the X-axis and the Y-axis is the Z-axis, characterized in that, The injection mold large-stroke composite angle reverse buckle and inclined stripping mechanism comprises an inclined stripping slider (4), an inclined stripping sliding rail (5), an inclined guide column (6) and an elastic component (7), the inclined stripping sliding rail (5) is fixed on the top of the back mold core (2), and the inclined stripping sliding rail (5) has a first inclination angle rotating around the Y axis and a second inclination angle rotating around the Z axis; the inclined stripping slider (4) is slidingly installed on the inclined stripping sliding rail (5), the inclined stripping slider (4) is provided with a tab (401) extending into the cavity for forming a reverse buckle part (A) of the product (3), the elastic component (7) applies an elastic force to the inclined stripping slider (4) in the direction of stripping; the inclined guide column (6) is fixed on the bottom of the front mold core (1), when the front mold core (1) is opened relative to the back mold core (2), the front mold core (1) drives the inclined stripping slider (4) to move along the inclined stripping sliding rail (5) by cooperating with the elastic component (7) through the inclined guide column (6), so that the tab (401) is stripped out of the reverse buckle part (A).

2. The large lift compound angle undercut taper lift ejector mechanism for injection mold applications of claim 1, wherein: A limiting stop column (8) is further fixed on the back mold core (2), and the limiting stop column (8) is used for stopping the inclined stripping slider (4) to limit the movement stroke thereof.

3. The large lift compound angle undercut taper lift ejector mechanism for injection mold applications of claim 1, wherein: The elastic component (7) is a spring, the back mold core (2) is provided with a first spring positioning groove, and a spring positioning pin (9) is fixed in the first spring positioning groove, the inclined stripping slider (4) is provided with a second spring positioning groove opposite to the first spring positioning groove, and the elastic component (7) is sleeved on the spring positioning pin (9) and elastically abuts against the first spring positioning groove and the second spring positioning groove at two ends thereof.

4. The large lift compound angle undercut taper lift draft mechanism for injection mold applications of claim 1, wherein: The inclined stripping slider (4) is provided with an inclined guide hole (402), and the inclined guide column (6) is inserted into the inclined guide hole (402) in clearance fit.

5. The large lift compound angle undercut taper lift ejector mechanism of claim 4, wherein: The inclined stripping sliding rail (5) is a T-shaped sliding rail, the bottom of the inclined stripping slider (4) is provided with a T-shaped sliding groove (403) slidingly fitted with the inclined stripping sliding rail (5), the inclined stripping sliding rail (5) is provided with a waist-shaped hole (501), and the lower end of the inclined guide column (6) extends into the waist-shaped hole (501).

6. The large lift compound angle undercut taper lift ejector mechanism for injection mold applications of claim 1, wherein: An inclined shovel base (10) is further included, and the inclined guide column (6) is fixedly installed at the bottom of the front mold core (1) through the inclined shovel base (10).

7. The large lift compound angle undercut taper lift mechanism for injection mold applications of claim 6, wherein: The bottom of the inclined shovel base (10) is provided with a first inclined pressing surface (1001), the top of the inclined stripping slider (4) is provided with a second inclined pressing surface (404), and when the front mold core (1) and the back mold core (2) are in the mold closing state, the first inclined pressing surface (1001) is completely fitted with the second inclined pressing surface (404).

8. The large lift compound angle undercut taper lift ejector mechanism of claim 1, wherein: The top of the back mold core (2) is further fixed with a wear-resistant insert (11) made of hard alloy material, the wear-resistant insert (11) is provided with a slot, and the tab (401) is slidingly inserted into the slot.

9. The large lift compound angle undercut and taper demolding mechanism for injection molds of claim 1, wherein: The product (3) is an arched cover structure, and the concave cavity thereof is arranged towards the back mold core (2); a window (301) is arranged at the top of the product (3), and is used for providing a moving space for the inclined pulling slide block (4).

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