Side-pulling type injection mold

Abstract

The utility model relates to a side pulling type injection mold which comprises an upper mold base, a lower mold base and a side pulling mechanism arranged between the upper mold base and the lower mold base, the upper mold base and the lower mold base are respectively provided with an upper mold cavity and a lower mold cavity which are used for injection molding, and the side pulling mechanism comprises a switching base, a sliding base, a sliding rail, an air cylinder and a shaping block; the side pulling mechanism is used for assisting the upper mold base and the lower mold base to form an injection molding part, the outer contour of the shaping block is used for forming a side cavity of the injection molding part, and the shaping block is detachably connected to the sliding seat, so that the shaping block and the side mold block on the sliding seat are combined to form an inner inclined plate cavity which is difficult to mill; the inner inclined plate of the side cavity of the injection molding part is formed through the side pulling mechanism, the demolding direction of the side pulling mechanism is perpendicular to the main demolding direction, abrasion to the injection molding part during mold demolding is reduced, and meanwhile the mold is suitable for injection molding parts with positive-angle or negative-angle demolding faces.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a side-drawing injection mold. Background Art

[0002] An injection mold is a tool that injects heated and molten plastic into a mold cavity under high pressure through an injection molding machine, and makes injection molded parts after cooling and solidification. Its processing structure is simple, and the demoulding direction is single, which is suitable for mass production. The traditional injection mold with a core-pulling structure is a slider that can move laterally installed on the side of the parting surface. It is used in conjunction with a cylinder to process side holes, side cavities and other structures through the slider. However, with the popularization of plastic products, the structure of plastic parts is becoming more and more complex. When dealing with plastic accessories with side holes and negative-angle demoulding surface structures, the simple core-pulling structure is difficult to meet production requirements. Therefore, the mold structure needs to be improved according to the structural characteristics of the plastic accessories. Summary of the Invention

[0003] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: a side-drawing injection mold, comprising an upper mold base and a lower mold base, and a side-drawing mechanism arranged between the upper mold base and the lower mold base, the upper mold base and the lower mold base are respectively provided with an upper mold cavity and a lower mold cavity for injection molding, the side-drawing mechanism comprises an adapter seat, a slide seat, a slide rail, a cylinder and a forming block, the upper mold base is fixedly connected to the adapter seat, the outer side of the adapter seat is fixedly connected to the cylinder, and the inner side is slidably connected to the slide seat through the slide rail, one side of the slide seat is connected to the output end of the cylinder, and the other side is detachably connected to a forming block for forming an inner cavity, the slide seat is provided with a side module, and the side module and the forming block are combined to form an inner inclined plate cavity.

[0004] By adopting the above technical solution, the side withdrawal mechanism assists the upper mold base and the lower mold base to form the injection molded part, and the outer contour of the forming block is used to form the side cavity of the injection molded part. Since the forming block is detachably connected to the slide, the forming block and the side module on the slide are combined to form an inner inclined plate cavity that is difficult to process, and the demolding direction of the side withdrawal mechanism is perpendicular to the main demolding direction, which reduces the wear on the injection molded part during mold demolding. It is also suitable for injection molded parts with positive or negative angle demolding surfaces.

[0005] The utility model is further configured such that the slide seat is provided with a rectangular groove and a countersunk hole, the shaping block is provided with a clamping portion corresponding to the rectangular groove, and a threaded hole corresponding to the countersunk hole, the shaping block is clamped to the slide seat through the rectangular groove, and is threadedly connected to the slide seat through the countersunk hole.

[0006] Furthermore, the side module is provided with a first molding surface and an outer contour surface, the side surface of the clamping portion is provided with a slope, and a second molding surface corresponding to the first molding surface, and the first molding surface, the second molding surface and the outer contour surface are combined to form the inner inclined plate cavity.

[0007] By adopting the above technical solution, the clamping part is guided by the inclined surface to be clamped into the rectangular groove, and the second forming surface is a plane, so that the side module abuts against the second forming surface. There is a gap between the first forming surface and the second forming surface to form an inner inclined plate, and the shape of the outer surface of the inner inclined plate is determined by the outer contour surface.

[0008] The utility model is further configured such that the adapter seat is provided with a mounting groove, the slide rails are fixedly connected to both sides of the mounting groove, both sides of the slide seat are provided with slide grooves corresponding to the slide rails, the outer side of the slide seat is provided with an inclined surface, and the upper mold cavity is provided with a pressing surface corresponding to the inclined surface.

[0009] Furthermore, a T-shaped slot is provided at the tail of the slide, and the output end of the cylinder is connected to the slide via the T-shaped slot.

[0010] By adopting the above technical solution, when the upper mold base and the lower mold base are closed, the pressing surface applies force to the slide toward the lower mold cavity through the inclined surface, so that the slide is close to the lower mold base, playing a positioning role, avoiding the movement of the slide during injection molding, and making the structure of the injection molded part stable.

[0011] The present invention is further configured such that the side modules are provided with protrusions for forming side chamfered surfaces or side holes.

[0012] By adopting the above technical solution, according to actual needs, structures such as chamfered surfaces, side blind holes, side through holes, and side long holes can be formed on the side surfaces of the injection molded parts through the raised portions.

[0013] The present invention is further configured such that an upper snap-fit ​​cavity is provided on the bottom surface of the side module, and a lower snap-fit ​​cavity corresponding to the upper snap-fit ​​cavity is provided on the lower mold cavity.

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

[0015] 1. The side extraction mechanism assists the upper and lower mold bases in forming the injection molded part. The outer contour of the shaping block is used to form the side cavity of the injection molded part. Since the shaping block is detachably connected to the slide, the shaping block and the side mold blocks on the slide combine to form an inner inclined plate cavity that is difficult to mill out.

[0016] 2. The inner inclined plate of the side cavity of the injection molded part is formed by the side withdrawal mechanism, and the demoulding direction of the side withdrawal mechanism is perpendicular to the main demoulding direction, which reduces the wear of the injection molded part during mold demoulding. It is also suitable for injection molded parts with positive or negative angle demoulding surfaces.

[0017] The embodiments of the present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2This is a schematic diagram of the structure of the utility model after opening;

[0020] Figure 3 For the utility model Figure 2 A partial enlarged view of the A direction view;

[0021] Figure 4 A three-dimensional diagram of the slide seat of the present invention;

[0022] Figure 5 A three-dimensional diagram of the shaping block of the present utility model;

[0023] Figure 6 It is a cross-sectional view of the upper die base of the utility model;

[0024] Figure 7 A three-dimensional diagram of the injection molded part of the present invention;

[0025] Figure 8 This is the front view of the injection molded part of the present invention;

[0026] Among them: 1-upper die base, 2-lower die base, 3-side extraction mechanism, 4-adapter base, 5-slide, 6-slide rail, 7-cylinder, 8-molding block, 9-injection part, 11-upper die cavity, 12-lower die cavity, 13-inner inclined plate cavity, 14-pressing surface, 15-lower snap-on cavity, 41-mounting slot, 50-side module, 51-rectangular slot, 52-countersunk hole, 53-slide, 54-inclined surface, 55-T-slot, 56-first molding surface, 57-outer contour surface, 58-raised portion, 59-upper snap-on cavity, 81-clamping portion, 82-threaded hole, 83-inclined surface, 84-second molding surface, 91-side cavity, 92-inner inclined plate, 93-outer side surface, 94-chamfered surface, 95-side blind hole, 96-side through hole, 97-snap-on structure; DETAILED DESCRIPTION

[0027] Combine Figure 1-3 As shown, the utility model provides a side-drawing injection mold, including an upper mold base 1 and a lower mold base 2, and a side-drawing mechanism 3 arranged between the upper mold base 1 and the lower mold base 2, the upper mold base 1 and the lower mold base 2 are respectively provided with an upper mold cavity 11 and a lower mold cavity 12 for injection molding, the side-drawing mechanism 3 includes an adapter seat 4, a slide 5, a slide rail 6, a cylinder 7 and a shaping block 8, the upper mold base 1 is fixedly connected to the adapter seat 4, the outer side of the adapter seat 4 is fixedly connected to the cylinder 7, and the inner side is slidably connected to the slide 5 through the slide rail 6, one side of the slide 5 is connected to the output end of the cylinder 7, and the other side is detachably connected to the shaping block 8 for forming an inner cavity, the slide 5 is provided with a side module 50, and the side module 50 is combined with the shaping block 8 to form an inner inclined plate cavity 13.

[0028] Combine Figure 4 、 5As shown, in this embodiment, the slide 5 is provided with a rectangular groove 51 and a countersunk hole 52, the forming block 8 is provided with a clamping portion 81 corresponding to the rectangular groove 51, and a threaded hole 82 corresponding to the countersunk hole 52, the forming block 8 is clamped to the slide 5 through the rectangular groove 51, and is threadedly connected to the slide 5 through the countersunk hole 52, the side module 50 is provided with a first forming surface 56 and an outer contour surface 57, the side surface of the clamping portion 81 is provided with an inclined surface 83, and a second forming surface 84 corresponding to the first forming surface 56, the first forming surface 56, the second forming surface 84 and the outer contour surface 57 are combined to form an inner inclined plate cavity 13, the clamping portion 81 is guided by the inclined surface 83 to be clamped into the rectangular groove 51, the second forming surface 84 is a plane, so that the side module 50 abuts against the second forming surface 84, and there is a gap between the first forming surface 56 and the second forming surface 84 to form an inner inclined plate 92, and the shape of the outer side surface 93 of the inner inclined plate is determined by the outer contour surface 57.

[0029] Combine Figure 6 As shown, in this embodiment, the adapter seat 4 is provided with a mounting groove 41, the slide rail 6 is fixedly connected to both sides of the mounting groove 41, and slide grooves 53 corresponding to the slide rail 6 are provided on both sides of the slide 5. An inclined surface 54 is provided on the outer side of the slide 5, and the upper mold cavity 11 is provided with a pressing surface 14 corresponding to the inclined surface 54. The tail of the slide 5 is provided with a T-slot 55, and the output end of the cylinder 7 is clamped with the slide 5 through the T-slot 55. When the upper mold base 1 and the lower mold base 2 are closed, the pressing surface 14 applies a force to the slide 5 toward the lower mold cavity 12 through the inclined surface 54, so that the slide 5 is close to the lower mold base 2, which plays a positioning role, avoiding the movement of the slide 5 during injection molding, and making the structure of the injection molded part 9 stable.

[0030] Combine Figure 7 As shown, in this embodiment, the side module 50 is provided with a raised portion 58 for forming a chamfered surface or a side hole, the bottom surface of the side module 50 is provided with an upper snap cavity 59, and the lower mold cavity 12 is provided with a lower snap cavity 15 corresponding to the upper snap cavity 59. The various surfaces of the side module 50 involved in injection molding can be processed as needed. The raised portion 58 can be used to form a chamfered surface 94, a side blind hole 95, a side through hole 96 and other structures on the side of the injection molded part 9. The snap structure 97 of the injection molded part 9 is formed by combining the upper snap cavity 59 and the lower snap cavity 15, which makes it easy to process and has a wide range of applications.

[0031] Combine Figure 8 As shown, in the utility model, the side withdrawal mechanism 3 assists the upper mold base 1 and the lower mold base 2 to form the injection molded part 9, and the outer contour of the shaping block 8 is used to form the side cavity 91 of the injection molded part 9. Since the shaping block 8 is detachably connected to the slide 5, the shaping block 8 and the side module 50 on the slide 5 are combined to form an inner inclined plate cavity 13 that is difficult to process. The demolding direction of the inner inclined plate 92 of the injection molded part 9 is perpendicular to the main demolding direction, which reduces the wear on the injection molded part during mold demolding, and is also suitable for injection molded parts with positive or negative angle demolding surfaces.

[0032] 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. A side-drawing injection mold, comprising an upper mold base (1) and a lower mold base (2), and a side-drawing mechanism (3) arranged between the upper mold base (1) and the lower mold base (2), wherein the upper mold base (1) and the lower mold base (2) are respectively provided with an upper mold cavity (11) and a lower mold cavity (12) for injection molding, characterized in that: The side-drawing mechanism (3) comprises an adapter seat (4), a slide seat (5), a slide rail (6), a cylinder (7) and a shaping block (8); the upper die seat (1) is fixedly connected to the adapter seat (4); the outer side of the adapter seat (4) is fixedly connected to the cylinder (7); the inner side of the adapter seat (4) is slidably connected to the slide seat (5) via the slide rail (6); one side of the slide seat (5) is connected to the output end of the cylinder (7); the other side is detachably connected to the shaping block (8) for forming an inner cavity; the slide seat (5) is provided with a side module (50), and the side module (50) and the shaping block (8) are combined to form an inner inclined plate cavity (13).

2. A side-draw injection mold according to claim 1, characterized in that: The slide seat (5) is provided with a rectangular groove (51) and a countersunk hole (52); the shaping block (8) is provided with a clamping portion (81) corresponding to the rectangular groove (51) and a threaded hole (82) corresponding to the countersunk hole (52); the shaping block (8) is clamped to the slide seat (5) through the rectangular groove (51) and is threadedly connected to the slide seat (5) through the countersunk hole (52).

3. The side-drawing injection mold according to claim 2, characterized in that: The side module (50) is provided with a first molding surface (56) and an outer contour surface (57); the side surface of the clamping portion (81) is provided with an inclined surface (83) and a second molding surface (84) corresponding to the first molding surface (56); the first molding surface (56), the second molding surface (84) and the outer contour surface (57) are combined to form the inner inclined plate cavity (13).

4. The side-drawing injection mold according to claim 1, characterized in that: The transfer seat (4) is provided with a mounting groove (41), the slide rail (6) is fixedly connected to both sides of the mounting groove (41), both sides of the slide seat (5) are provided with slide grooves (53) corresponding to the slide rail (6), the outer side of the slide seat (5) is provided with an inclined surface (54), and the upper mold cavity (11) is provided with a pressing surface (14) corresponding to the inclined surface (54).

5. The side-drawing injection mold according to claim 4, characterized in that: The tail of the slide (5) is provided with a T-shaped slot (55), and the output end of the cylinder (7) is clamped with the slide (5) via the T-shaped slot (55).

6. The side-draw injection mold according to claim 1, characterized in that: The side module (50) is provided with a protrusion (58) for forming a side chamfered surface or a side hole.

7. The side-draw injection mold according to claim 1, characterized in that: The bottom surface of the side module (50) is provided with an upper snap-fit ​​cavity (59), and the lower mold cavity (12) is provided with a lower snap-fit ​​cavity (15) corresponding to the upper snap-fit ​​cavity (59).

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