Core-pulling anti-backing mechanism of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a core-pulling anti-backing mechanism of an injection mold. Comprising an X-direction positioning mechanism and a Y-direction positioning mechanism, one end of a core-pulling sliding block is connected with the X-direction positioning mechanism, and the other end of the core-pulling sliding block is connected with the Y-direction positioning mechanism; the X-direction positioning mechanism comprises an oil cylinder and an inclined drawer, the telescopic end of the oil cylinder is connected with one end of the inclined drawer, the other end of the inclined drawer is connected with the core pulling sliding block through a first T-shaped groove, the included angle between the first T-shaped groove and the top face of the inclined drawer is an obtuse angle alpha, and the end, connected with the first T-shaped groove, of the core pulling sliding block is a first T-shaped sliding block which comprises a first inclined face and a plane. The included angle between the first T-shaped sliding block and the plane is an acute angle beta, the first inclined face is parallel to the first T-shaped groove, and the plane is parallel to the top face of the inclined drawer. The Y-direction positioning mechanism comprises an inclined guide column and a Y-direction sliding block, and the Y-direction sliding block is connected with the inclined guide column in a sliding mode through a sliding block base. Compared with the prior art that two vertical oil cylinders are adopted to prevent the core-pulling sliding block from backing, the structure is simpler, and the effect is better.

Description

Technical Field

[0001] The utility model relates to the field of injection mold technology, in particular to an injection mold core pulling anti-backward mechanism. Background Art

[0002] In the process of plastic mold production, a core-pulling slider mechanism is required. Since the product area on the core-pulling slider is large, it is easy for the core-pulling block to move backwards during product injection molding. The existing solution is to add another side-locked cylinder mechanism, and two vertical cylinders to limit the core-pulling slider. This method is not only complex in structure but also requires processing and mold trial verification, which will incur a large amount of processing fees and mold trial debugging fees, and the obtained effect is not ideal. In particular, when the core-pulling slider needs to be demolded in two directions, it cannot meet the demand for rapid demolding. This will leave marks, flash and burrs on the surface of the product, seriously affecting the surface quality of the product. Therefore, a new anti-backward mechanism is needed to fix the core-pulling slider and complete demolding in two directions at the same time. Utility Model Content

[0003] Problem to be solved: To provide an anti-backward mechanism with a simpler structure and better effect.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold core pulling anti-backward mechanism, comprising an X-direction positioning mechanism and a Y-direction positioning mechanism, one end of the core pulling slider is connected to the X-direction positioning mechanism, and the other end is connected to the Y-direction positioning mechanism; the X-direction positioning mechanism comprises an oil cylinder and an oblique pull, the telescopic end of the oil cylinder is connected to one end of the oblique pull, and the other end of the oblique pull is connected to the core pulling slider through a T-slot 1, the angle between the T-slot 1 and the top surface of the oblique pull is an obtuse angle α, the end of the core pulling slider connected to the T-slot 1 is a T-slide 1, the T-slide 1 comprises an inclined surface 1 and a plane, the angle between the T-slide 1 and the plane is an acute angle β, the inclined surface 1 is parallel to the T-slot 1, and the plane is parallel to the top surface of the oblique pull; the Y-direction positioning mechanism comprises an inclined guide column and a Y-direction slider, and the Y-direction slider is slidably connected to the inclined guide column through a slider seat.

[0005] Preferably, one end of the Y-direction slider connected to the core-pulling slider is provided with a mold cavity, and the other end is provided with a second T-shaped slider, and the second T-shaped slider is slidably matched with the second T-shaped slot of the slider seat.

[0006] Preferably, a T-slot three is provided at one end of the oblique drawer connected to the oil cylinder.

[0007] Preferably, a column hole is opened in the middle of the slider seat, the central column of the inclined guide column passes through the column hole and is fixed on the base, a slide groove is provided on the base, and slide platforms are provided on both sides of the bottom of the slider seat, and the slide platforms slide in cooperation with the slide groove.

[0008] Compared with the prior art, the utility model provides an injection mold core pulling anti-backward mechanism, which has the following beneficial effects: only one oil cylinder is needed to achieve the goal of fixing the core pulling slider and preventing it from moving back during casting, and after casting is completed, the core pulling slider can be demolded by the contraction of the oil cylinder. Therefore, compared with the prior art that uses two vertical oil cylinders to prevent the core pulling slider from moving back, the utility model has a simpler structure, which is mainly due to the setting of the oblique pull. An inclined T-slot 1 is provided on the oblique pull. When the plane of the core pulling slider is tightly attached to the top surface of the oblique pull, the core pulling slider is fixed. During demolding, the T-slide 1 slides and cooperates with the T-slot 1 to complete demolding; the Y-axis positioning mechanism is responsible for positioning and demolding in the other direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Figure 2 It is a schematic diagram of the oblique drawer structure of the present utility model.

[0011] Figure 3 This is a schematic structural diagram of the core-pulling slider of the present utility model.

[0012] Figure 4 This is a structural diagram of the core-pulling slider of the present invention from another angle.

[0013] Figure 5 This is a schematic diagram of the Y-direction slider structure of the present utility model.

[0014] Figure 6 This is a structural schematic diagram of the slider seat of the utility model.

[0015] Explanation of the accompanying reference numerals: 1. X-axis positioning mechanism; 11. Cylinder; 12. Oblique pull-out; 121. T-slot three; 122. T-slot one; 123. Oblique pull-out top surface; 2. Y-axis positioning mechanism; 21. Oblique guide column; 22. Y-axis slider; 221. Mold cavity; 222. T-slot two; 23. Slider seat; 231. Column hole; 232. Slide; 233. T-slot two; 3. Core-pulling slider; 31. T-slot one; 32. Inclined surface one; 33. Plane; 34. Core-pulling part; 4. Base; 41. Slide; 5. Mold. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention:

[0017] As shown in the figure, an injection mold core pulling anti-backward mechanism includes an X-direction positioning mechanism 1 and a Y-direction positioning mechanism 2. One end of the core pulling slider 3 is connected to the X-direction positioning mechanism 1, and the other end is connected to the Y-direction positioning mechanism 2; the X-direction positioning mechanism 1 includes a cylinder 11 and an oblique pull 12. The direction of the cylinder 11 is the X-axis direction, and the Y-axis direction is perpendicular to the X-axis direction. The telescopic end of the cylinder 11 is connected to one end of the oblique pull 12, and the oblique pull 12 is connected to the cylinder 11 through a T-slot 121. One corner of the oblique pull 12 is an inclined surface, and a T-slot 122 is provided on the inclined surface. The T-slot 122 is slidably connected to the core-pulling slider 3. The angle between the T-slot 122 and the telescopic end of the oil cylinder 11 is an obtuse angle α. The end of the core-pulling slider 3 connected to the T-slot 122 is a T-slide 31. The T-slide 31 includes an inclined surface 32 and a plane 33. The plane 33 is parallel to the oblique pull top surface 123. The angle between the T-slide 31 and the plane 33 is an acute angle β. The acute angle β makes the T-slide 31 present a pointed cone shape to better match the end of the T-slot 122. The inclined surface 32 is parallel to the T-slot 122; the Y-direction positioning mechanism 2 includes an inclined guide column 21 and a Y-direction slider 22. The Y-direction slider 22 is slidably connected to the inclined guide column 21 through the slider seat 23. The Y-direction slider 22 has a mold cavity 221 at one end connected to the core-pulling slider 3, and a second T-shaped slider 222 at the other end. The second T-shaped slider 222 slidably engages with the second T-shaped slot 233 of the slider seat 23. A post hole 231 is defined in the center of the slider seat 23. The center post of the inclined guide post 21 passes through the post hole 231 and is fixed to the base 4. The base 4 has a slide slot 41. Slide platforms 232 are provided on both sides of the bottom of the slider seat 23, and the slide platforms 232 slidably engage with the slide slot 41.

[0018] When in use, the mold 5 is first placed in the mold cavity 221, and then the core pulling part 34 of the core pulling slider 3 is connected to the mold cavity 221. During the molding process, the oil cylinder 11 is extended, and the plane 33 first abuts against the inclined pull top surface 123 to achieve the fixation of the core pulling slider 3 in the Y-axis direction, so that the core pulling slider 3 will not be displaced along the negative direction of the Y-axis due to pressure; after the molding is completed, demoulding is required, the oil cylinder 11 contracts, and the inclined pull 12 moves along the positive direction of the X-axis. Since the inclined pull 12 is displaced relative to the core pulling slider 3, the T-slide 1 slides into the T-slot 122. As the inclined pull 12 moves, the demoulding of the core pulling slider 3 is completed, and the inclined guide column 21 on one side of the Y-axis positioning mechanism 2 drives the slider seat 23 to be displaced along the positive direction of the Y-axis, thereby driving the Y-axis slider 22 to demould. The positioning mechanism in two directions of the utility model can better realize the positioning of the core pulling slider 3 and complete the demoulding in two directions at the same time.

[0019] The above embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An injection mold core pulling anti-backward mechanism, characterized by: The invention comprises an X-direction positioning mechanism (1) and a Y-direction positioning mechanism (2); one end of a core-pulling slider (3) is connected to the X-direction positioning mechanism (1), and the other end is connected to the Y-direction positioning mechanism (2); the X-direction positioning mechanism (1) comprises an oil cylinder (11) and an oblique pull (12); the telescopic end of the oil cylinder (11) is connected to one end of the oblique pull (12); the other end of the oblique pull (12) is connected to the core-pulling slider (3) through a T-slot (122); the angle between the T-slot (122) and the top surface of the oblique pull (123) is an obtuse angle α; the core-pulling slider (3) and the T-slot (122) are obtuse angles. One end connected to the T-shaped groove (122) is a T-shaped slider (31), the T-shaped slider (31) includes an inclined surface (32) and a plane (33), the angle between the T-shaped slider (31) and the plane (33) is an acute angle β, the inclined surface (32) is parallel to the T-shaped groove (122), and the plane (33) is parallel to the inclined top surface (123); the Y-direction positioning mechanism (2) includes an inclined guide column (21) and a Y-direction slider (22), and the Y-direction slider (22) is slidably connected to the inclined guide column (21) through a slider seat (23).

2. The injection mold core-pulling anti-backward mechanism according to claim 1, characterized in that: One end of the Y-direction slider (22) connected to the core-pulling slider (3) is provided with a mold cavity (221), and the other end is provided with a second T-shaped slider (222). The second T-shaped slider (222) is slidably matched with the second T-shaped slot (233) of the slider seat (23).

3. The injection mold core-pulling anti-backward mechanism according to claim 2, characterized in that: One end of the inclined drawer (12) connected to the oil cylinder (11) is provided with a T-shaped slot three (121).

4. The injection mold core-pulling anti-backward mechanism according to claim 3, characterized in that: A column hole (231) is provided in the middle of the slider seat (23), and the central column of the inclined guide column (21) passes through the column hole (231) and is fixed on the base (4). A slide groove (41) is provided on the base (4). Slide platforms (232) are provided on both sides of the bottom of the slider seat (23), and the slide platforms (232) are slidably matched with the slide groove (41).

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