Injection mold with combined type angle ejector mechanism

Abstract

The utility model relates to an injection mold with a combined type angle ejection mechanism, which comprises an upper mold base, a lower mold base, a demolding plate and an angle ejection component, the upper mold base and the lower mold base are combined to form a mold cavity for injection molding, the lower mold base is connected with the demolding plate in a sliding manner, the demolding plate is connected with the angle ejection component extending into the mold cavity, and the angle ejection component is connected with the mold cavity. The pitched roof assembly comprises a sliding seat, a push rod, a side sliding block and a spring; according to the utility model, during demolding, the demolding plate moves towards the direction of the mold cavity and controls the push rod to move upwards, and meanwhile, the side sliding block moves towards the direction of the guide groove under the acting force of the spring, so that the side sliding block is prevented from influencing normal demolding of an injection molding part; the push rod moves downwards and moves the side sliding block towards the mold cavity through the guide groove, and the push rod and the side sliding block are reset and prepared for next injection molding, so that the problem that the inclined ejection mechanism is unreasonable due to the fact that the distance between adjacent barb structures of an injection molding part is too narrow is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold with a combined inclined ejector mechanism. Background Art

[0002] The inclined ejector mechanism of the injection mold is a common structure in plastic injection molds. By converting the vertical movement of the mold opening and closing into horizontal movement, the inclined ejector mechanism can complete the lateral core pulling, thereby solving the problem of the back hook inside the product.

[0003] However, if the distance between adjacent barb structures in the same plane of the injection molded part is too narrow, the problem of collision between the two barbs will occur if the inclined lift mechanism is still used. As a last resort, the two sets of barb structures can only be designed to be staggered, which will cause the external structure of the injection molded part and its accessories to be readjusted. Therefore, a new inclined lift mechanism needs to be designed to produce this type of accessories. Summary of the Invention

[0004] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: an injection mold with a combined inclined ejector mechanism, comprising an upper mold base, a lower mold base, a stripper plate and an inclined ejector assembly, the upper mold base and the lower mold base are combined to form a mold cavity for injection molding, the lower mold base is slidably connected to the stripper plate, the stripper plate is connected to a inclined ejector assembly extending into the mold cavity, the inclined ejector assembly comprises a slide, a push rod, a side slider and a spring, the slide is fixedly connected to the stripper plate, one end of the push rod is laterally slidably connected to the slide, and the other end extends obliquely to the mold cavity, the lower mold base is slidably connected to the side slider abutting the push rod, and a guide groove for controlling the movement of the side slider is provided on the side of the push rod facing the side slider, and a spring for resetting is provided between the side slider and the lower mold base.

[0005] By adopting the above technical solution, during demolding, the demolding plate moves toward the direction of the mold cavity and controls the push rod to move upward. At the same time, the side slider moves toward the direction of the guide groove through the force of the spring, so as to prevent the side slider from affecting the normal demolding of the injection molded part. When the demolding plate is reset, the push rod moves downward and moves the side slider toward the direction of the mold cavity through the guide groove. The push rod and the side slider are reset and ready for the next injection molding, so as to solve the problem of unreasonable inclined ejector mechanism caused by the narrow distance between adjacent hook structures of the injection molded part.

[0006] The utility model is further configured such that the lower die base is provided with a raised portion forming a die cavity, and the lower die base is provided with connected inclined grooves and side holes on both sides of the raised portion, one end of the push rod is slidably connected to the inclined groove, and the side slider is slidably connected to the side hole.

[0007] Furthermore, the slide is provided with a T-slot perpendicular to the demoulding direction, and the push rod is slidably connected to the slide via the T-slot.

[0008] By adopting the above technical solution, when demoulding, the demoulding plate drives the push rod to move upward, and the push rod is guided by the inclined groove to move along the direction of the T-slot, and the push rod moves inward relative to the injection molded part to facilitate demoulding of the injection molded part.

[0009] The present invention is further configured such that the side hole is provided with a first limit surface for controlling the stroke of the side slider, and the inclined groove is provided with a second limit surface for controlling the stroke of the push rod.

[0010] By adopting the above technical solution, the moving range of the side slider / push rod is limited by the first limiting surface / the second limiting surface, thereby preventing the side slider / push rod from interfering with the upper die seat due to misalignment.

[0011] The utility model is further configured such that the side slider is provided with a cylindrical portion, and a shaping portion and an inner hole provided on the upper and lower sides of the cylindrical portion, the inner hole is sleeved with the spring, and the side hole is provided with a long strip hole adapted to the shaping portion.

[0012] Furthermore, a first inclined surface, a second inclined surface, and a rounded surface provided between the first inclined surface and the second inclined surface are provided on a side of the side slider facing the guide groove, and the side slider abuts against the guide groove through the rounded surface.

[0013] By adopting the above technical solution, the side slider always abuts against the push rod through the rounded surface, so that the rounded surface is tangent to the guide groove, reducing the wear of the side slider and the push rod and increasing the service life of the mold.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] During demoulding, the demoulding plate moves toward the mold cavity and controls the push rod to move upward. At the same time, the side slider moves toward the guide groove through the force of the spring to prevent the side slider from affecting the normal demoulding of the injection molded part. When the demoulding plate is reset, the push rod moves downward and moves the side slider toward the mold cavity through the guide groove. The push rod and the side slider are reset and ready for the next injection, so as to solve the problem of unreasonable inclined ejector mechanism caused by the narrow distance between adjacent hook structures of the injection molded part.

[0016] The embodiments of the present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main view of the utility model;

[0018] Figure 2 This is a structural diagram of the lower die base of the utility model;

[0019] Figure 3 For the utility model Figure 2 A sectional view in the middle;

[0020] Figure 4 For the utility model Figure 3 A partial enlarged view of the middle B direction view;

[0021] Figure 5 It is a partially enlarged view of the three-dimensional diagram of the lower die base of the utility model;

[0022] Figure 6 This is a three-dimensional diagram of the side slider of the utility model:

[0023] Figure 7 A three-dimensional diagram of the push rod of the present invention:

[0024] Figure 8 This is a cross-sectional view of a mold for an injection molded part with a conventional structure where adjacent barbs have a wide distance between them.

[0025] Wherein: 1 - upper die base, 2 - lower die base, 3 - stripper plate, 4 - inclined ejector assembly, 5 - die cavity, 6 - slide, 7 - push rod, 8 - side slide, 9 - spring, 10 - guide groove, 11 - raised portion, 12 - inclined groove, 13 - side hole, 14 - T-slot, 15 - first limiting surface, 16 - second limiting surface, 17 - cylindrical portion, 18 - first shaping portion, 19 - inner hole, 20 - first inclined surface, 21 - second inclined surface, 22 - fillet surface, 23 - second shaping portion, 24 - third shaping portion; DETAILED DESCRIPTION

[0026] Combine Figure 1-3 As shown, an injection mold with a combined inclined ejector mechanism includes an upper mold base 1, a lower mold base 2, a stripper plate 3 and an inclined ejector assembly 4. The upper mold base 1 and the lower mold base 2 are combined to form a mold cavity 5 for injection molding. The lower mold base 2 is slidably connected to the stripper plate 3, and the stripper plate 3 is connected to the inclined ejector assembly 4 extending into the mold cavity 5. The inclined ejector assembly 4 includes a slide 6, a push rod 7, a side slider 8 and a spring 9. The slide 6 is fixedly connected to the stripper plate 3, one end of the push rod 7 is laterally slidably connected to the slide 6, and the other end extends obliquely to the mold cavity 5, the lower mold base 2 is slidably connected to the side slider 8 abutting the push rod 7, and the push rod 7 is provided with a guide groove 10 for controlling the movement of the side slider 8 on the side facing the side slider 8, and a spring 9 for resetting is provided between the side slider 8 and the lower mold base 2.

[0027] Combine Figure 4 、 5As shown, in this embodiment, the lower mold base 2 is provided with a raised portion 11 for forming the mold cavity 5, and the lower mold base 2 is provided with connected inclined grooves 12 and side holes 13 on both sides of the raised portion 11, one end of the push rod 7 is slidably connected to the inclined groove 12, the side slider 8 is slidably connected to the side hole 13, and the slide 6 is provided with a T-slot 14 perpendicular to the demolding direction, and the push rod 7 is slidably connected to the slide 6 through the T-slot 14. During demolding, when the demolding plate 3 drives the push rod 7 to move upward, the push rod 7 is guided by the inclined groove 12 to move along the direction of the T-slot 14, and the push rod 7 is translated inward relative to the injection molded part to facilitate demolding of the injection molded part.

[0028] Combine Figure 6 、 7 As shown, in this embodiment, the side hole 13 is provided with a first limit surface 15 for controlling the stroke of the side slider 8, the inclined groove 12 is provided with a second limit surface 16 for controlling the stroke of the push rod 7, the side slider 8 is provided with a cylindrical portion 17, and a first forming portion 18 and an inner hole 19 provided on the upper and lower sides of the cylindrical portion 17, the first forming portion 18 is used to form the rectangular groove portion of the injection molded part, the inner hole 19 is sleeved with a spring 9, the side hole 13 is provided with a long strip hole adapted to the first forming portion 18, the side of the side slider 8 facing the guide groove 10 is provided with a first inclined surface 20, a second inclined surface 21, and a rounded surface 22 provided between the first inclined surface 20 and the second inclined surface 21, the side slider 8 is abutted against the guide groove 10 through the rounded surface 22, and the side slider 8 is provided with a second forming portion 23 and a third forming portion 24 for forming the cavity portion and the slot portion of the injection molded part.

[0029] contrast Figure 8 As shown, the working principle of the present invention is that the push rod 7 and the side slider 8 are respectively embedded in the oblique groove 12 and the side hole 13 of the raised portion 11. When the mold injection is completed and demoulding is completed, the injection molding machine controls the stripping plate 3 to move toward the direction of the mold cavity 5 and controls the push rod 7 to move upward. The push rod 7 is linked with the oblique groove 12 and the T-slot 14 and moves upward in an inclined direction. At the same time, the side slider 8 is moved toward the direction of the guide groove 10 by the force of the spring 9, while avoiding the first molding part 18, the second molding part 23, and the third molding part 24 from affecting the normal demoulding of the injection molded part, and the two push rods will not collide because the distance between adjacent hook structures of the injection molded part is too narrow; when the injection molding machine controls the stripping plate 3 to reset, the push rod 7 moves downward and moves the side slider 8 toward the direction of the mold cavity 5 through the guide groove 10, and the push rod 7 and the side slider 8 are reset and ready for the next injection.

[0030] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An injection mold with a combined inclined ejector mechanism, comprising an upper mold base (1), a lower mold base (2), a stripper plate (3) and an inclined ejector assembly (4), wherein the upper mold base (1) and the lower mold base (2) are combined to form a mold cavity (5) for injection molding, the lower mold base (2) is slidably connected to the stripper plate (3), and the stripper plate (3) is connected to the inclined ejector assembly (4) extending into the mold cavity (5), characterized in that: The inclined ejector assembly (4) includes a slide (6), a push rod (7), a side slider (8) and a spring (9); the slide (6) is fixedly connected to the stripping plate (3); one end of the push rod (7) is laterally slidably connected to the slide (6), and the other end is inclined to extend to the mold cavity (5); the lower mold base (2) is slidably connected to the side slider (8) abutting against the push rod (7); a guide groove (10) for controlling the movement of the side slider (8) is provided on the side of the push rod (7) facing the side slider (8), and a spring (9) for resetting is provided between the side slider (8) and the lower mold base (2).

2. The injection mold with a combined inclined ejector mechanism according to claim 1, characterized in that: The lower die base (2) is provided with a raised portion (11) for forming a die cavity (5), and the lower die base (2) is provided with connected inclined grooves (12) and side holes (13) on both sides of the raised portion (11), one end of the push rod (7) is slidably connected to the inclined groove (12), and the side slider (8) is slidably connected to the side hole (13).

3. The injection mold with a combined inclined ejector mechanism according to claim 2, characterized in that: The slide seat (6) is provided with a T-shaped slot (14) perpendicular to the demoulding direction, and the push rod (7) is slidably connected to the slide seat (6) via the T-shaped slot (14).

4. An injection mold with a combined inclined ejector mechanism according to claim 2 or 3, characterized in that: The side hole (13) is provided with a first limiting surface (15) for controlling the travel of the side slider (8), and the inclined groove (12) is provided with a second limiting surface (16) for controlling the travel of the push rod (7).

5. The injection mold with a combined inclined ejector mechanism according to claim 4, characterized in that: The side slider (8) is provided with a cylindrical portion (17), and a first shaped portion (18) and an inner hole (19) provided on the upper and lower sides of the cylindrical portion (17); the inner hole (19) is provided with the spring (9); and the side hole (13) is provided with a long strip hole adapted to the first shaped portion (18).

6. The injection mold with a combined inclined ejector mechanism according to claim 5, characterized in that: The side slider (8) is provided with a first inclined surface (20), a second inclined surface (21), and a rounded surface (22) provided between the first inclined surface (20) and the second inclined surface (21) on the side facing the guide groove (10), and the side slider (8) abuts against the guide groove (10) through the rounded surface (22).

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