Injection mold for automobile instrument panel housing

Abstract

The utility model provides an injection mold for an automobile instrument panel housing, and belongs to the technical field of automobile accessory manufacturing. The injection mold for the automobile instrument panel housing comprises an upper mold plate, a lower mold plate and a mold core, a mounting groove is formed in the outer side of the lower mold plate, an upper swing rod and a lower swing rod are rotationally arranged in the mounting groove, a guide rod inserted into the mounting groove is fixed to the lower end face of the upper mold plate, and a vertically-arranged sliding rod is fixed to the bottom of the mounting groove; the sliding rod is sleeved with a sliding block sliding up and down along the sliding rod, the guide rod can abut against the outer end of the lower swing rod after moving downwards and drive the lower swing rod to swing, a vertically-arranged lifting groove is formed in the upper end face of the sliding block, a T-shaped rod sliding up and down along the lifting groove is arranged in the lifting groove, the T-shaped rod is sleeved with a first spring, and a horizontal disc is horizontally fixed to the guide rod. The horizontal disc can push the upper swing rod to swing when moving downwards. After the lower end of the guide rod completely extrudes the lower swing rod, the outer end of the upper swing rod extrudes the horizontal disc, the upper die plate and the lower die plate are more tightly attached, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts manufacturing and relates to an injection mold for an automobile instrument panel cover. Background Art

[0002] Cars feature numerous plastic parts, most of which are injection molded. For example, the dashboard cover, made of transparent plastic, features angled holes along its edges for connection. Existing injection molds, when insufficient downforce is applied, can easily create gaps between the upper and lower mold plates, leading to poor sealing and burrs on the finished dashboard cover, resulting in product failure. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose an injection mold for an automobile instrument panel cover. After the guide rod is pressed down into place, the slider is driven to move upward, driving the outer end of the upper swing rod to press down the horizontal disc, so that the upper template and the lower template are more tightly fastened together, thereby improving the sealing effect.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an injection mold for a car instrument panel cover, comprising an upper template, a lower template, and a mold core, characterized in that a molding groove is opened on the lower template, the mold core is fixed in the molding groove, a mounting groove is opened on the outer side of the lower template, an upper swing rod and a lower swing rod are rotatably provided in the mounting groove, a guide rod inserted into the mounting groove is fixed on the lower end surface of the upper template, a vertically arranged slide rod is fixed on the bottom of the mounting groove, a slider is sleeved on the slide rod and slides up and down along the slide rod, a first strip slide groove is opened on the outer side of the slide rod, and the inner end of the lower swing rod has a guide rod inserted into the first strip slide groove The upper end of the first spring abuts against the horizontal block, and the lower end of the first spring abuts against the upper end surface of the slider, and the inner end of the upper swing rod is provided with a pin inserted into the second strip slide groove. A horizontal disc is horizontally fixed on the guide rod, which can push the upper swing rod to swing when the horizontal disc moves downward.

[0005] Furthermore, the lower swing rod is Z-shaped. When the outer end of the lower swing rod is squeezed to the bottom of the installation groove by the guide rod, the outer end of the upper swing rod presses the horizontal disc downward under the action of the first spring.

[0006] Furthermore, the edge of the horizontal disc is provided with a convex ring, and the outer end of the upper swing rod is provided with a ball head capable of contacting the convex ring.

[0007] Furthermore, an inclined hole is opened in the lower template, which is connected to the forming groove. A sliding core rod is provided in the inclined hole, and a second spring is sleeved on the core rod. The tail end of the core rod has a raised stop edge. A step is provided in the inclined hole, and one end of the second spring abuts against the step, and the other end of the second spring abuts against the stop edge. A guiding inclined surface is provided on one side of the slider. When the slider rises, the guiding inclined surface will press the tail end of the core rod into the inclined hole and allow the front end of the core rod to extend into the forming groove.

[0008] Furthermore, the notch of the lifting slot has a limiting protrusion, and after the T-bar moves up to a certain height, the limiting protrusion abuts against the T-bar. Under the action of the first spring, the T-bar is pulled to move upward relative to the lifting slot.

[0009] Furthermore, a vertical hole is formed at the bottom of the slider, through which the slide rod passes. A third spring is mounted within the hole, which is sleeved onto the slide rod. The upper end of the third spring abuts against the top wall of the vertical hole, while the lower end abuts against the bottom of the mounting slot. The third spring is used to assist in supporting the slider, making it easier for the lower swing arm to lift the slider.

[0010] Due to the slider's own weight, before the mold is closed, the slider is located at the bottom of the mounting slot, with the outer ends of the upper and lower swing arms tilted upward. During mold closing, the upper mold plate drives the guide rod downward. The edge of the horizontal disc on the guide rod presses against the outer end of the upper swing rod. Through the linkage of the horizontal block and T-bar, the slider moves upward along the slide rod for a distance. After the horizontal disc passes around the outer end of the upper swing rod, the lower end of the guide rod abuts against the outer end of the lower swing rod, and the lower swing rod continues to push the slider upward. At this time, the inner end of the upper swing rod is pushed upward by the first spring, while the outer end of the upper swing rod presses downward on the horizontal disc, preventing displacement during mold closing and enhancing the sealing effect. After the injection molding is completed, the injection molding machine drives the upper mold plate upward. Without the downward pressure of the guide rod, the slider moves downward due to its own weight and abuts against the bottom of the mounting slot. At this time, due to the guiding slope, the core rod is pushed out of the inclined hole by the second spring and abuts against the guiding slope, completing the core pulling process and facilitating subsequent product removal.

[0011] Compared with the existing technology, the injection mold of the automobile instrument panel cover has the following advantages:

[0012] 1. After the lower end of the guide rod completely squeezes the lower swing rod, the upper swing rod squeezes the horizontal disc under the action of the first spring, improving the sealing effect by making the upper and lower templates fit more closely.

[0013] 2. When closing the mold, the horizontal disc on the guide rod of the upper template will squeeze the upper swing rod when it moves downward, so that the other end of the upper swing rod drives the horizontal block, T-bar and slider to rise, so that the upper template has a certain buffering effect when it moves downward.

[0014] 3. When closing the mold, the guide rod drives the inner end of the lower swing rod to swing upward, and the lower swing rod drives the slider to move upward, which can push the forming front end of the core rod into the molding groove, facilitating the formation of an oblique mounting hole; after opening the mold, the guide rod moves upward, and the slider automatically slides down. Under the action of the second spring, the core rod retreats, realizing the core pulling process, making it convenient to remove the automobile instrument panel cover product from the molding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a partial cross-sectional view of the injection mold of the automobile instrument panel cover after mold closing.

[0016] Figure 2 This is a partial cross-sectional view of the injection mold of the automobile instrument panel cover after the mold is opened.

[0017] Figure 3 It is a three-dimensional diagram of the guide rod.

[0018] In the figure, 1. upper template; 2. lower template; 3. mold core; 4. forming groove; 5. mounting groove; 6. upper swing rod; 7. lower swing rod; 8. guide rod; 9. slide rod; 10. slider; 11. first strip slide groove; 12. lifting groove; 13. T-bar; 14. first spring; 15. second strip slide groove; 16. horizontal disk; 17. convex ring; 18. ball head; 19. inclined hole; 20. core rod; 21. second spring; 22. guiding inclined surface; 23. limiting protrusion; 24. vertical hole; 25. third spring; 26. horizontal block. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 、 Figure 2As shown, the injection mold of the automobile instrument panel cover includes an upper template 1, a lower template 2, and a mold core 3. The lower template 2 is provided with a molding groove 4, the mold core 3 is fixed in the molding groove 4, the outer side of the lower template 2 is provided with a mounting groove 5, an upper swing rod 6 and a lower swing rod 7 are rotatably provided in the mounting groove 5, the lower end surface of the upper template 1 is fixed with a guide rod 8 inserted into the mounting groove 5, the bottom of the mounting groove 5 is fixed with a vertically arranged slide rod 9, the slide rod 9 is sleeved with a slider 10 that slides up and down along the slide rod 9, the outer side of the slider 10 is provided with a first strip slide groove 11, the inner end of the lower swing rod 7 has a pin inserted into the first strip slide groove 11, and the guide rod 8 moves downward and engages with the outer end of the lower swing rod 7 The end abuts against and drives the lower swing rod 7 to swing. A vertically arranged lifting groove 12 is provided on the upper end surface of the slider 10. A T-shaped rod 13 is provided in the lifting groove 12, which slides up and down along the lifting groove 12. A first spring 14 is sleeved on the T-shaped rod 13, and a horizontal block 26 is fixed to the upper end of the T-shaped rod 13 and a second strip slide 15 is provided on one side of the horizontal block 26. The upper end of the first spring 14 abuts against the horizontal block 26, and the lower end of the first spring 14 abuts against the upper end surface of the slider 10. The inner end of the upper swing rod 6 has a pin inserted into the second strip slide 15. A horizontal disc 16 is horizontally fixed on the guide rod 8, which can push the upper swing rod 6 to swing when the horizontal disc 16 moves downward.

[0021] The lower swing rod 7 is in a Z shape. When the outer end of the lower swing rod 7 is pressed against the bottom of the mounting groove 5 by the guide rod 8, the outer end of the upper swing rod 6 presses the horizontal disc 16 downward under the action of the first spring 14. Figure 3 As shown, the edge of the horizontal disc 16 has a circle of raised rings 17, and the outer end of the upper swing rod 6 has a ball head 18 that can contact the raised ring 17.

[0022] An inclined hole 19 is provided in the lower template 2, which is connected to the forming groove 4. A sliding core rod 20 is provided in the inclined hole 19, and a second spring 21 is sleeved on the core rod 20. The tail end of the core rod 20 has a raised stop edge, and a step is provided in the inclined hole 19. One end of the second spring 21 abuts against the step, and the other end of the second spring 21 abuts against the stop edge. A guiding inclined surface 22 is provided on one side of the slider 10. When the slider 10 rises, the guiding inclined surface 22 will press the tail end of the core rod 20 into the inclined hole 19 and make the front end of the core rod 20 extend into the forming groove 4.

[0023] The notch of the lifting slot 12 has a limiting protrusion 23, and after the T-bar 13 moves up to a certain height, the limiting protrusion 23 abuts against the T-bar 13. Under the action of the first spring 14, the T-bar 13 is pulled to move upward relative to the lifting slot 12.

[0024] A vertical hole 24 is formed at the bottom of the slider 10, through which the slide rod 9 passes. A third spring 25 is positioned within the vertical hole 24 and sleeved over the slide rod 9. The upper end of the third spring 25 abuts against the top wall of the vertical hole 24, while the lower end of the third spring 25 abuts against the bottom of the mounting slot 5. The third spring 25 serves to assist in supporting the slider 10, making it easier for the lower swing arm 7 to lift the slider 10.

[0025] Working process: Due to the weight of the slider 10 itself, before the mold is closed, the slider 10 will be located at the bottom of the installation groove 5, and the outer ends of the upper swing rod 6 and the lower swing rod 7 will be tilted upward. When the mold is closed, the upper template 1 drives the guide rod 8 to move downward, and the edge of the horizontal disc 16 on the guide rod 8 will squeeze the outer end of the upper swing rod 6. Through the linkage of the horizontal block 26 and the T-bar 13, the slider 10 is moved up a distance along the slide bar 9. After the horizontal disc 16 passes around the outer end of the upper swing rod 6, the lower end of the guide rod 8 will abut against the outer end of the lower swing rod 7, and the slider 10 will continue to be pushed up by the lower swing rod 7. At this time, the inner end of the upper swing rod 6 will be pushed upward under the action of the first spring 14, and the outer end of the upper swing rod 6 will squeeze the horizontal disc 16 downward, making it less likely to move during mold closing and enhancing the sealing effect. After the injection molding is completed, the injection molding machine drives the upper template 1 to move upward. After the slider 10 loses the downward pressure of the guide rod 8, it moves downward due to its own gravity and rests on the bottom of the installation groove 5. At this time, due to the relationship between the guide slope 22, the core rod 20 is pushed out of the inclined hole 19 by the second spring 21 and rests on the guide slope 22, completing the core pulling process and facilitating the subsequent product removal.

[0026] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An injection mold for an automobile instrument panel cover, comprising an upper mold plate, a lower mold plate, and a mold core, characterized in that: The lower end of the first spring abuts against the horizontal block, and the lower end of the first spring abuts against the upper end of the slider, and the inner end of the upper swing arm is provided with a pin inserted in the second strip slide groove. The guide rod is horizontally fixed with a horizontal disk, which can push the upper swing arm to swing when the horizontal disk moves downward.

2. The injection mold for an automobile instrument panel cover according to claim 1, characterized in that: The lower swing rod is Z-shaped. When the outer end of the lower swing rod is squeezed to the bottom of the installation groove by the guide rod, the outer end of the upper swing rod presses the horizontal disc downward under the action of the first spring.

3. The injection mold for an automobile instrument panel cover according to claim 2, characterized in that: The edge of the horizontal disc is provided with a convex ring, and the outer end of the upper swing rod is provided with a ball head which can contact the convex ring.

4. The injection mold for an automobile instrument panel cover according to claim 3, characterized in that: An inclined hole is provided in the lower template, which is connected to the forming groove. A sliding core rod is provided in the inclined hole, and a second spring is sleeved on the core rod. The tail end of the core rod has a raised stop edge. A step is provided in the inclined hole, and one end of the second spring abuts against the step, and the other end of the second spring abuts against the stop edge. A guiding inclined surface is provided on one side of the slider. When the slider rises, the guiding inclined surface will press the tail end of the core rod into the inclined hole and allow the front end of the core rod to extend into the forming groove.

5. The injection mold for an automobile instrument panel cover according to claim 4, characterized in that: The notch of the lifting slot is provided with a limiting protrusion, and when the T-shaped rod moves up to a certain height, the limiting protrusion abuts against the T-shaped rod.

6. The injection mold for an automobile instrument panel cover according to claim 5, characterized in that: A vertical hole is opened at the bottom of the slider, the slide rod passes through the vertical hole, and a third spring is arranged in the vertical hole and sleeved on the slide rod. The upper end of the third spring abuts against the top wall of the vertical hole, and the lower end of the third spring abuts against the bottom of the installation groove.

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