Secondary pitched roof structure

Abstract

The utility model discloses a secondary pitched roof structure which comprises a material conveying structure, a top plate structure, an ejector pin structure, a mold and a secondary ejection structure, the material conveying structure is connected into the mold through a pipeline, one end of the ejector pin structure is arranged in the mold, the other end of the ejector pin structure is fixed with the top plate structure, and the top plate structure comprises a first top plate and a second top plate. A secondary ejection structure is arranged between the first ejection plate and the second ejection plate, the ejector pin structure comprises a first ejector pin and a second ejector pin, the first ejector pin and the second ejector pin are fixed to the first ejection plate and the second ejection plate respectively, the secondary ejection structure drives the first ejection plate and the second ejection plate to move at the same time, and then the secondary ejection structure limits movement of the first ejection plate. The upper end face of the inclined sliding block is separated from the lower end face of the upper ejection block, the second ejection plate continues to move upwards, the first ejection plate stops moving, and two sections of mold ejection are achieved through one-time movement. The mold ejection mechanism has the advantages of being high in efficiency, good in demolding effect and the like.

Description

Technical Field

[0001] The utility model relates to the field of ejector pins, in particular to a secondary inclined ejector structure. Background Technique

[0002] The ejector pin of an injection mold is an important component in the injection molding process, used to form details, holes, etc. of the product in the mold. At present, the material selection of the ejector pin of the injection mold is gradually shifting towards materials with high strength, high wear resistance, and high corrosion resistance to improve the service life and stability of the ejector pin. The progress of modern manufacturing technology has brought continuous improvement in the manufacturing process of the ejector pin of the injection mold. Advanced technologies such as numerical control machining and electrical discharge machining are used to improve the accuracy and surface quality of the ejector pin. The structural design of the ejector pin of the injection mold tends to be lightweight, compact, and functional to meet the requirements of different injection processes and improve production efficiency and product quality.

[0003] However, the existing ejector pins of injection molds still have the following problems:

[0004] High-quality materials and precision manufacturing processes bring relatively high production costs, and some enterprises may face excessive cost pressure. How to effectively control costs while ensuring quality is a difficult problem that needs to be solved. Due to the complex processes in the ejector pin industry of injection molds and the uneven technical levels among enterprises, the overall production efficiency is low, which increases the production costs of enterprises and reduces their market competitiveness. If a complex structure cannot be ejected in one go, increasing processes and equipment will raise costs, which is not conducive to the development of enterprises.

[0005] Therefore, how to design an ejector pin structure with lower cost and capable of handling complex injection molds has become an urgent problem for those skilled in the art. Content of the Utility Model

[0006] The purpose of the utility model is to provide a secondary inclined ejector structure to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution:

[0008] Provide a secondary inclined ejector structure, including a material conveying structure, a top plate structure, an ejector pin structure, a mold, and a secondary ejection structure. The material conveying structure is connected to the mold through a pipeline. One end of the ejector pin structure is arranged inside the mold, and the other end is fixed to the top plate structure. The top plate structure includes a first top plate and a second top plate. A secondary ejection structure is arranged between the first top plate and the second top plate. The ejector pin structure includes a first ejector pin and a second ejector pin. The first ejector pin and the second ejector pin are respectively fixed to the first top plate and the second top plate. The secondary ejection structure drives the first top plate and the second top plate to move simultaneously, then the secondary ejection structure restricts the movement of the first top plate, and finally the second top plate ejects again to achieve the demolding purpose.

[0009] Further, the mold is an integral internal hollow cavity, and the ends of the first ejector pin and the second ejector pin are provided with bumps, which are clamped at the orifice of the mold cavity.

[0010] Further, the secondary ejection structure includes a main support rod, an upper top block and an inclined sliding block. The main support rod is provided with a first groove and a second groove. The first groove is arranged at both side ends of the main support rod. The second groove is a through groove in the middle between the two first grooves on both sides. The upper top block moves in the first groove, and the inclined sliding block moves in the second groove. The lower end surface of the upper top block abuts against the upper end surface of the inclined sliding block.

[0011] Further, the inclined sliding block is provided with a perforation on the side opposite to the first groove, and a buffer device is arranged in the perforation. The buffer device includes a top bolt and a spring.

[0012] Further, the upper end surface of the first groove is an inclined end, and the inclined sliding block is correspondingly provided with an inclined side. When the inclined sliding block rises to abut against the upper end surface of the first groove, the upper end surface of the first groove gives the inclined sliding block an inward compressive force, compresses the spring and moves it inward until the upper end surface of the inclined sliding block separates from the lower end surface of the upper top block.

[0013] Further, the upper end surface of the upper top block is fixed to the first top plate, and the supporting force for the upward movement of the inclined sliding block drives the first top plate to move upward.

[0014] Further, both the first ejector pin and the second ejector pin are inserted obliquely into the mold. The first ejector pin and the second ejector pin are ejected simultaneously for the first time, and the second ejector pin ejects again for the second time.

[0015] Further, bumps are provided at the tops of both the first ejector pin and the second ejector pin, and the bumps are adapted to the mold.

[0016] Further, the top plate structure further includes an upper frame, a middle frame and a lower frame, and the upper frame, the middle frame and the lower frame provide protection and support for the whole device from top to bottom in sequence.

[0017] Further, the lower end of the main support rod is fixed to the lower frame, and the main support rod does not move when the inclined sliding block and the upper top block move in the first groove and the second groove.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] The utility model provides a secondary inclined ejector structure. Since it cannot be ejected in one time during the injection molding process, the top plate structure includes a first top plate and a second top plate. The first top plate and the second top plate are respectively fixed with a first ejector pin and a second ejector pin. The first ejector pin and the second ejector pin are respectively inserted into specific positions inside the mold. A secondary ejection structure is provided between the first top plate and the second top plate. The upper top block moves in the first groove, and the inclined slider moves in the second groove. The lower end surface of the upper top block abuts against the upper end surface of the inclined slider. The upper end surface of the first groove is an inclined end, and the inclined slider is correspondingly provided with an inclined side. When the inclined slider rises to abut against the upper end surface of the first groove, the upper end surface of the first groove gives the inclined slider an inward compressive force, compresses the spring and moves it inward until the upper end surface of the inclined slider is separated from the lower end surface of the upper top block. At this time, the second top plate continues to move upward, and the first top plate stops moving, forming a two-stage ejection mold for one movement. The utility model has the characteristics of high efficiency, good demolding effect, etc. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structure diagram of a secondary inclined ejector structure of the present utility model;

[0021] Figure 2 It is a sectional view of a secondary inclined ejector structure of the present utility model;

[0022] Figure 3 It is an internal structure diagram of a secondary inclined ejector structure of the present utility model;

[0023] Figure 4 It is a three-dimensional structure diagram of the ejector structure of a secondary inclined ejector structure of the present utility model;

[0024] Figure 5 It is a side view of the ejector structure of a secondary inclined ejector structure of the present utility model;

[0025] Figure 6 It is a sectional view of the ejector structure of a secondary inclined ejector structure of the present utility model;

[0026] Figure 7 It is Figure 6 The enlarged view at P1 in

[0027] Figure 8 It is Figure 4 The enlarged view at P2 in

[0028] Figure 9 It is a secondary ejection structure diagram of a secondary inclined ejector structure of the present utility model;

[0029] The markings of each component in the attached drawings are as follows: 1, feeding structure; 2, upper frame; 3, middle frame; 4, lower frame; 5, top plate structure; 51, first top plate; 52, second top plate; 6, secondary ejection structure; 61, main support rod; 611, first groove; 612, second groove; 62, upper ejector block; 63, inclined sliding block; 631, inclined edge; 632, perforation; 64, ejector pin; 65, spring; 7, mold; 8, ejector pin structure; 81, first ejector pin; 811, convex block; 82, second ejector pin. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 6 , a secondary inclined ejection structure is provided, including a feeding structure 1, a top plate structure 5, an ejector pin structure 8, a mold 7 and a secondary ejection structure 6. The feeding structure 1 is connected to the mold 7 through a pipeline. One end of the ejector pin structure 8 is arranged inside the mold 7, and the other end is fixed to the top plate structure 5. The top plate structure 5 includes a first top plate 51 and a second top plate 52. A secondary ejection structure 6 is arranged between the first top plate 51 and the second top plate 52. The ejector pin structure 8 includes a first ejector pin 81 and a second ejector pin 82. The first ejector pin 81 and the second ejector pin 82 are respectively fixed to the first top plate 51 and the second top plate 52. The first top plate 51 and the second top plate 52 are driven to move simultaneously by the secondary ejection structure 6, and then the movement of the first top plate 51 is restricted by the secondary ejection structure 6. Finally, the second top plate 52 ejects again to achieve the purpose of demolding. The first ejector pin 81 and the second ejector pin 82 are both inclined and inserted into the mold 7. The first ejector pin 81 and the second ejector pin 82 eject simultaneously for the first time, and the second ejector pin 82 ejects again for the second time.

[0032] Please refer to Figures 7 - 8 , the mold 7 is an integral internal hollow cavity. Convex blocks 811 are provided at the ends of the first ejector pin 81 and the second ejector pin 82, and the convex blocks 811 are clamped at the cavity opening of the mold 7.

[0033] Please refer to Figure 9, the secondary ejection structure 6 includes a main support rod 61, an upper ejecting block 62 and an inclined sliding block 63. The main support rod 61 is provided with a first groove 611 and a second groove 612. The first groove 611 is provided at both side ends of the main support rod 61. The second groove 612 is a through groove in the middle between the two first grooves 611 on both sides. The upper ejecting block 62 moves in the first groove 611, and the inclined sliding block 63 moves in the second groove 612. The lower end surface of the upper ejecting block 62 abuts against the upper end surface of the inclined sliding block 63. The inclined sliding block 63 is provided with a perforation 632 on the side opposite to the first groove 611, and a buffer device is arranged in the perforation 632. The buffer device includes a top bolt 64 and a spring 65. The upper end surface of the first groove 611 is an inclined end, and the inclined sliding block 63 is correspondingly provided with an inclined edge 631. When the inclined sliding block 63 rises to abut against the upper end surface of the first groove 611, the upper end surface of the first groove 611 gives the inclined sliding block 63 an inward compressive force, compresses the spring 65 and moves it inward until the upper end surface of the inclined sliding block 63 is separated from the lower end surface of the upper ejecting block 62. The upper end surface of the upper ejecting block 62 is fixed to the first top plate 51, and the upward supporting force of the inclined sliding block 63 drives the first top plate 51 to move upward.

[0034] Please refer to Figure 3 and Figure 6 , convex blocks 811 are provided at the tops of the first ejector pin 81 and the second ejector pin 82. The convex blocks 811 are adapted to the mold 7. When the first top plate 51 moves upward, the convex blocks 811 on the first ejector pin 81 simultaneously apply an ejecting force to the mold 7. Similarly, when the second top plate 52 moves upward, the convex blocks 811 on the second ejector pin 82 simultaneously apply an ejecting force to the mold 7.

[0035] Please refer to Figures 1 - 2 , the top plate structure 5 further includes an upper frame 2, a middle frame 3 and a lower frame 4. The upper frame 2, the middle frame 3 and the lower frame 4 provide protection and support for the whole device from top to bottom in sequence. The lower end of the main support rod 61 is fixed to the lower frame 4. When the inclined sliding block 63 and the upper ejecting block 62 move in the first groove 611 and the second groove 612, the main support rod 61 does not move.

[0036] In the first stage, the inclined slide block 63 is inside the first groove 611. The secondary ejection structure 6 drives the second top plate 52 to move upward. The inclined slide block 63 moves upward. The main support rod 61 is fixed to the lower frame 4. The inclined slide block 63 moves upward in the first groove 611. The inclined slide block 63 is fixed to the second top plate 52. The inclined slide block 63 drives the second top plate 52 to move upward. The second ejector pin 82 then applies pressure to the mold 7. Since the lower end face of the upper top block 62 abuts against the upper end face of the inclined slide block 63, the inclined slide block 63 drives the upper top block 62 to move upward. And the upper top block 62 is fixed to the first top plate 51. The first top plate 51 and the first ejector pin 81 also move upward. The first ejector pin 81 and the second ejector pin 82 apply pressure to the mold 7 simultaneously. But when the inclined slide block 63 rises to the position where the inclined edge 631 contacts the top surface of the first groove 611, the main support rod 61 squeezes the inclined slide block 63 inward. The inclined slide block 63 is provided with a spring 65 and a top bolt 64 at the other end. The inclined slide block 63 compresses the spring 65 and moves horizontally. During this period, the inclined slide block 63 cannot move upward. And the first top plate 51 and the second top plate 52 cannot rise either. Until the inclined slide block 63 disengages from the main support rod 61. At the same time, the upper end face of the inclined slide block 63 and the lower end face of the upper top block 62 also disengage. The inclined slide block 63 and the second top plate 52 continue to move upward. The first top plate 51 and the upper top block 62 stop moving. The second ejector pin 82 continues to press the mold 7. Finally, demolding is completed.

[0037] The utility model provides a secondary inclined ejection structure. Since the injection mold 7 cannot be ejected in one time, the top plate structure 5 includes a first top plate 51 and a second top plate 52. The first top plate 51 and the second top plate 52 are respectively fixed with a first ejector pin 81 and a second ejector pin 82. The first ejector pin 81 and the second ejector pin 82 are respectively inserted at specific positions inside the mold 7. A secondary ejection structure 6 is provided between the first top plate 51 and the second top plate 52. The upper top block 62 moves in the first groove 611. The inclined slide block 63 moves in the second groove 612. The lower end face of the upper top block 62 abuts against the upper end face of the inclined slide block 63. The upper end face of the first groove 611 is an inclined end. The inclined slide block 63 is correspondingly provided with an inclined edge 631. When the inclined slide block 63 rises to contact the upper end face of the first groove 611, the upper end face of the first groove 611 gives the inclined slide block 63 an inward compressive force, compresses the spring 65 and moves it inward until the upper end face of the inclined slide block 63 disengages from the lower end face of the upper top block 62. At this time, the second top plate 52 continues to move upward. The first top plate 51 stops moving. A one-motion two-stage top mold is formed. The utility model has the characteristics of high efficiency, good demolding effect, etc.

[0038] The above is only a preferred specific embodiment of the utility model. However, the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the utility model.

Claims

1. A secondary inclined ejector structure, comprising a material feeding structure (1), an ejector plate structure (5), an ejector pin structure (8), a mold (7) and a secondary ejector structure (6), characterized in that: The feeding structure (1) is connected to the mold (7) through a pipeline; one end of the ejector structure (8) is arranged inside the mold (7) and the other end is fixed to the top plate structure (5); the top plate structure (5) comprises a first top plate (51) and a second top plate (52); a secondary ejection structure (6) is arranged between the first top plate (51) and the second top plate (52); the ejector structure (8) comprises a first ejector pin (81) and a second ejector pin (82); the first ejector pin (81) and the second ejector pin (82) are respectively fixed to the first top plate (51) and the second top plate (52); the secondary ejection structure (6) drives the first top plate (51) and the second top plate (52) to move simultaneously; the secondary ejection structure (6) then limits the movement of the first top plate (51); and finally the second top plate (52) is ejected again, thereby achieving the purpose of demoulding.

2. A secondary inclined roof structure according to claim 1, characterized in that: The mold (7) is an integrated internal hollow cavity, and the ends of the first ejector pin (81) and the second ejector pin (82) are provided with protrusions (811), and the protrusions (811) are clamped at the cavity opening of the mold (7).

3. A secondary inclined roof structure according to claim 1, characterized in that: The secondary ejection structure (6) comprises a main support rod (61), an upper ejection block (62) and an inclined sliding block (63); the main support rod (61) is provided with a first groove (611) and a second groove (612); the first groove (611) is provided at both side ends of the main support rod (61); the second groove (612) is a through groove in the middle of the first grooves (611) on both sides; the upper ejection block (62) moves in the first groove (611), and the inclined sliding block (63) moves in the second groove (612); the lower end surface of the upper ejection block (62) abuts against the upper end surface of the inclined sliding block (63).

4. A secondary inclined roof structure according to claim 3, characterized in that: The inclined sliding block (63) is provided with a through hole (632) on the side opposite to the first groove (611), and a buffer device is provided in the through hole (632), and the buffer device includes a push bolt (64) and a spring (65).

5. A secondary inclined roof structure according to claim 4, characterized in that: The upper end surface of the first groove (611) is an inclined end, and the inclined sliding block (63) is provided with an inclined edge (631) corresponding thereto. When the inclined sliding block (63) rises to contact with the upper end surface of the first groove (611), the upper end surface of the first groove (611) applies an inward compression force to the inclined sliding block (63), compressing the spring (65) and moving it inward until the upper end surface of the inclined sliding block (63) is separated from the lower end surface of the upper top block (62).

6. A secondary inclined roof structure according to claim 5, characterized in that: The upper end surface of the upper top block (62) is fixed to the first top plate (51), and the supporting force of the inclined sliding block (63) moving upward drives the first top plate (51) to move upward.

7. The secondary inclined roof structure according to claim 1, characterized in that: The first ejector pin (81) and the second ejector pin (82) are both inserted obliquely into the mold (7); the first ejector pin (81) and the second ejector pin (82) are ejected simultaneously at a first time, and the second ejector pin (82) ejects again at a second time.

8. The secondary inclined roof structure according to claim 7, characterized in that: The top ends of the first ejector pin (81) and the second ejector pin (82) are both provided with a protrusion (811), and the protrusion (811) is compatible with the mold (7).

9. The secondary inclined roof structure according to claim 3, characterized in that: The top plate structure (5) further comprises an upper frame (2), a middle frame (3) and a lower frame (4), wherein the upper frame (2), the middle frame (3) and the lower frame (4) sequentially provide protection and support for the entire device from top to bottom.

10. The secondary inclined roof structure according to claim 9, characterized in that: The lower end of the main support rod (61) is fixed to the lower frame (4), and when the inclined sliding block (63) and the upper top block (62) move in the first groove (611) and the second groove (612), the main support rod (61) does not move.

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