Sliding block secondary core-pulling mold with ejection mechanism

Abstract

The utility model relates to the technical field of die design, and discloses a slide block secondary core-pulling die with an ejection mechanism, which comprises an upper fixing plate, a lower fixing plate, a male die plate, a female die plate, a spacing plate and an ejector plate, and a sprue bush for feeding is fixedly mounted at the center of the top surface of the upper fixing plate in a penetrating manner. According to the secondary core-pulling mechanism of the sliding block, the oil cylinder drives the wedge-shaped block A to drive the wedge-shaped block B to move, the secondary core-pulling action of the inner sliding block is accurately controlled through the T-shaped block and the shoveling machine, then the stability of the sliding block is ensured through the limiting block, the guide column and the guide sleeve act synergistically, accurate positioning of the inner sliding block in the core-pulling process is ensured, and the pulling block is tightly connected with the inner sliding block; seamless attachment of the sliding block insert and a product is ensured, high-precision forming is achieved, cooperative operation of demolding components is completed, the flexibility of the mold is effectively improved, the service life of the mold is effectively prolonged, abrasion in the product forming process is reduced, and the stability of the mold and the precision of the product are ensured.

Description

Technical Field

[0001] This utility model relates to the field of mold design technology, specifically a mold with a slider secondary core pulling and an ejection mechanism. Background Technology

[0002] In mold design, achieving simultaneous core pulling by the slider and product ejection for products with complex undercut structures, while ensuring the compactness and stability of the mold structure, has always been a challenge for mold designers. Existing products have square hole core pulling, corresponding to undercuts on the inner side. The conventional approach for inner undercuts is to add a slanted ejector for demolding. However, because this product involves scraping away glue at the top of the slanted ejector, and the slanted ejector cannot move in the demolding direction, the slanted ejector cannot meet the requirements of the existing mechanism. Therefore, a slider-based secondary core pulling structure needs to be developed. Since the product's appearance cannot have ejection marks, an ejection mechanism needs to be added to the slider. Utility Model Content

[0003] The purpose of this utility model is to provide a mold with a slider for secondary core pulling and an ejection mechanism, which solves the technical problem of possible interference in the core pulling and ejection process of the mold. It achieves the goal that after the product is formed, the slider can perform secondary core pulling, and the ejection mechanism can complete the ejection without damaging the appearance of the product.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mold with a slider-type secondary core pulling mechanism and an ejection mechanism, comprising an upper fixed plate, a lower fixed plate, a male template, a female template, a partition plate, and an ejector plate. A sprue sleeve for feeding material is fixedly and continuously installed at the center of the top surface of the upper fixed plate, and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the upper fixed plate. A male template is installed at the bottom of the upper fixed plate. Two partition plates are provided on the top surface of the lower fixed plate, and two ejector plates are provided between the two partition plates. Ejector plates are provided on the ejector plates. A female template is installed on the top of the two partition plates. An upper mold liner and a rear mold liner are provided between the male template and the female template. The upper mold liner and the rear mold liner are connected by a slider-type secondary core pulling mechanism and a threaded mechanism. Threaded mechanisms are provided on the other three sides of the female template.

[0005] Preferably, the secondary core-pulling mechanism of the slider includes a slide block, a cylinder mounting base, wedge block A, wedge block B, a guide post, a guide sleeve, a pull block, and a slider insert.

[0006] Preferably, the slide block is installed on the mother template, the cylinder mounting base is installed on the outside of the mother template, the cylinder mounting base is equipped with a cylinder, the piston rod of the cylinder is connected to wedge block A, wedge block A is adapted to wedge block B, pushing wedge block B to move, the outer wall of wedge block B is provided with a T-shaped block, and a shovel is adapted to be installed on the outside of the T-shaped block to control the movement of the slide block and ensure that the components operate in a coordinated manner when the mold opens and closes.

[0007] Preferably, a limit block is installed at the bottom of the slide block to limit the movement range of the slider and ensure accurate positioning; the guide post passes through the guide sleeve, the guide sleeve is fixed on the slide block, the pull block is connected to the inner slider, and the inner slider is tightly fitted with the product through the slider insert to achieve precise product forming.

[0008] Preferably, the coiling mechanism includes a coiling seat fixed on the mother template. A hydraulic motor is mounted on the outside of the coiling seat, and a drive shaft is fixedly connected to the output end of the hydraulic motor. The other end of the drive shaft is connected to the bottom of the gear seat through a bearing. A large gear is fixedly sleeved on the outer wall of the drive shaft, and a small gear is provided inside the gear seat. The small gear meshes with the large gear, and a coiling shaft is fixed in the inner hole of the small gear. The coiling shaft rotates synchronously with the small gear, and the other end of the coiling shaft is connected to the product through a thread to achieve precise coiling.

[0009] This utility model provides a mold with a slider-type secondary core pulling mechanism and an ejection mechanism. It has the following advantages:

[0010] (1) This utility model uses a secondary core-pulling mechanism for the slider. The hydraulic cylinder drives wedge block A to move wedge block B. The secondary core-pulling action of the inner slider is precisely controlled by the T-block and the shovel. Then, the slider is stabilized by the limit block. The guide post and the guide sleeve work together to ensure that the inner slider is accurately positioned during the core-pulling process. The pull block is tightly connected to the inner slider to ensure that the slider insert fits the product seamlessly, achieving high-precision molding. The demolding is completed by the coordinated operation of all components, which effectively improves the flexibility and service life of the mold, reduces wear during the product molding process, and ensures the stability of the mold and the precision of the product.

[0011] (2) By introducing the threaded part mechanism, this utility model makes the processing of the threaded part of the product more precise, improves production efficiency and reduces scrap rate. The hydraulic motor drives the transmission shaft, the transmission shaft drives the large gear to rotate, the small gear meshes with the large gear, and the small gear drives the threaded shaft to rotate synchronously, so as to accurately control the threaded depth of the product. Attached Figure Description

[0012] Figure 1 This is a perspective view of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the slider secondary core pulling mechanism and the tooth pulling mechanism of this utility model;

[0014] Figure 3 This is a cross-sectional view of the slider secondary core-pulling mechanism of this utility model;

[0015] Figure 4 This is a view of the coiled tooth mechanism of this utility model.

[0016] In the diagram: Upper fixed plate 21, Lower fixed plate 22, Male template 23, Female template 24, Spare plate 25, Ejector plate 26, Slider secondary core pulling mechanism 3, Twisting mechanism 4, Slide seat 31, Hydraulic cylinder mounting seat 32, Hydraulic cylinder 33, Wedge block A 34, Wedge block B 35, T-block 36, Shovel 37, Limit block 38, Guide post 39, Guide sleeve 310, Pull block 311, Inner slider 312, Slider insert 313, Twisting seat 41, Hydraulic motor 42, Drive shaft 43, Gear seat 44, Small gear 45, Large gear 46, Twisting shaft 47. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] Based on the existing problem of interference that may occur during the core pulling and ejection processes of existing molds, this utility model provides a preferred embodiment of a mold with a slider-type secondary core pulling mechanism and an ejection mechanism, for example... Figure 1-4 As shown: A mold with a slider-type secondary core pulling mechanism and an ejection mechanism includes an upper fixed plate 21, a lower fixed plate 22, a male template 23, a female template 24, a partition plate 25, and an ejector plate 26. A sprue sleeve for feeding material is fixedly installed through the center of the top surface of the upper fixed plate 21. The sprue sleeve is vertically arranged, and its upper end is located in the placement hole at the top of the upper fixed plate 21. The male template 23 is installed at the bottom of the upper fixed plate 21. Two partition plates 25 are provided on the top surface of the lower fixed plate 22, and two ejector plates 26 are provided between the two partition plates 25. Ejector plates 26 are provided with ejector pins. The female template 24 is installed on the top of the two partition plates 25. An upper mold liner and a rear mold liner are provided between the male template 23 and the female template 24. The upper mold liner and the rear mold liner are connected by a slider-type secondary core pulling mechanism 3 and a threaded tooth mechanism 4. Threaded tooth mechanisms 4 are provided on the other three sides of the female template 24.

[0020] The secondary core-pulling mechanism 3 for the slider includes a slide block 31, a cylinder mounting base 32, a wedge block A 34, a wedge block B 35, a guide post 39, a guide sleeve 310, a pull block 311, and a slider insert 313;

[0021] The slide block 31 is installed on the mother template 24, the cylinder mounting base 32 is installed on the outside of the mother template 24, the cylinder mounting base 32 is equipped with a cylinder 33, the piston rod of the cylinder 33 is connected to the wedge block A34, the wedge block A34 is adapted to the wedge block B35, pushing the wedge block B35 to move, the outer wall of the wedge block B35 is provided with a T-shaped block 36, and a shovel 37 is adapted to the outside of the T-shaped block 36 to control the movement of the slide block and ensure that the components operate in a coordinated manner when the mold is opened and closed;

[0022] A limit block 38 is installed at the bottom of the slide block 31 to limit the movement range of the slider and ensure precise positioning. A guide post 39 passes through the guide sleeve 310, which is fixed on the slide block 31. A pull block 311 is connected to an inner slider 312. The inner slider 312 is tightly fitted with the product 11 through a slider insert 313 to achieve precise product molding. A hydraulic cylinder 33 drives a wedge block A34 to move a wedge block B35. The secondary core-pulling action of the inner slider 312 is precisely controlled by a T-block 36 and a shovel 37. Then, the limit block 38 ensures the stability of the slider. The guide post 39 and the guide sleeve 310 work together to ensure the precise positioning of the inner slider 312 during the core-pulling process. The pull block 311 is tightly connected to the inner slider 312 to ensure that the slider insert 313 fits seamlessly with the product 11, achieving high-precision molding. The coordinated operation of all demolding components ensures the stability and reliability of the mold during opening and closing, improving product quality and production efficiency.

[0023] The coiling mechanism 4 includes a coiling seat 41, which is fixed on the mother template 24. A hydraulic motor 42 is mounted on the outside of the coiling seat 41. The output end of the hydraulic motor 42 is fixedly connected to a drive shaft 43. The other end of the drive shaft 43 is connected to the bottom of a gear seat 44 via a bearing. A large gear 46 is fixedly sleeved on the outer wall of the drive shaft 43. A small gear 45 is provided inside the gear seat 44. The small gear 45 meshes with the large gear 46. A coiling shaft 47 is fixed in the inner hole of the small gear 45. The coiling shaft 47 and the small gear 45 rotate synchronously. The other end of the coiling shaft 47 is connected to the product 11 via a thread to achieve precise coiling. The hydraulic motor 42 drives the drive shaft 43, which drives the large gear 46 to rotate. The small gear 45 meshes with the large gear 46, and the small gear 45 drives the coiling shaft 47 to rotate synchronously, thus precisely controlling the coiling depth of the product 11.

[0024] During use, when the mold is closed, the injection molded product is being produced. When the mold is opened, the hydraulic cylinder 33 drives the wedge block A34 to reset, the shovel 37 pulls the slider to the 20mm limit position, the wedge block B35 resets accordingly, and the inner slider 312 retracts synchronously with the pull block 311. The guide post 39 and the guide sleeve 310 precisely cooperate to ensure the slider returns to its stable position. The limit block 38 restricts the movement range to prevent the slider from moving excessively. Then, the ejector plate 26 drives the ejector pin 27 to push the product 11 upward, completing the demolding. During reset, the ejector plate 26 descends, the ejector pin 27 resets, the hydraulic cylinder 33 drives the wedge block A34 forward again, the shovel 37 pushes the slider back to its initial position, the wedge block B35 moves forward synchronously, and the inner slider 312 returns precisely to its position under the action of the pull block 311. The guide post 39 and the guide sleeve 310 precisely cooperate again to ensure the slider's stability, and the limit block 38 strictly restricts the movement range to prevent the slider from moving excessively. Then, the ejector plate 26 drives the ejector pin 27 to push the product 11 upward, completing the demolding. The movement range is limited, all components work together, the mold closes, and a new round of injection molding is prepared, ensuring that every step is precise. When thread tightening is required, the hydraulic motor 42 starts, driving the transmission shaft 43 to rotate. The large gear 46 drives the small gear 45 to mesh, and the thread tightening shaft 47 rotates synchronously, precisely controlling the thread tightening depth of product 11 to ensure tight thread fit and improve product connection strength. Since the thread tightening mechanism needs to be retracted when the mold opens, the process is that the hydraulic motor 42 reverses, the transmission shaft 43 rotates in the opposite direction, the large gear 46 drives the small gear 45 to mesh in the opposite direction, and the thread tightening shaft 47 reverses synchronously, gradually disengaging the threaded connection. With the cooperation of the secondary core-pulling mechanism 3 of the slider, the thread tightening shaft 47 retracts to the initial position, ensuring smooth mold opening and closing, coordinated operation of all components, efficient and stable production process, and smooth demolding of product 11.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold with slide core and ejection mechanism, comprising upper fixed plate (21), lower fixed plate (22), male mold plate (23), female mold plate (24), spacer plate (25), ejector plate (26), characterized in that: The top surface center of the upper fixed plate (21) is fixed with a through installation of a feeding nozzle, and the nozzle is vertically arranged, and the upper end of the nozzle is located in the placement hole at the top of the upper fixed plate (21), and the bottom of the upper fixed plate (21) is provided with a male mold plate (23), and the top surface of the lower fixed plate (22) is provided with two spacing plates (25), and two needle plates (26) are arranged between the two spacing plates (25), and the needle plate (26) is provided with a needle, and the top of the two spacing plates (25) is provided with a female mold plate (24), and the male mold plate (23) and the female mold plate (24) are provided with an upper mold and a rear mold.

2. A mold with a sliding block secondary core-pulling and ejection mechanism according to claim 1, characterized in that: The slider secondary core-pulling mechanism (3) comprises a sliding seat (31), an oil cylinder mounting seat (32), a wedge-shaped block A (34), a wedge-shaped block B (35), a guide column (39), a guide sleeve (310), a pull block (311) and a slider insert (313).

3. A mold with a sliding block secondary core-pulling and ejection mechanism according to claim 2, characterized in that: The sliding seat (31) is mounted on the female mold plate (24), the oil cylinder mounting seat (32) is mounted on the outer side of the female mold plate (24), the oil cylinder (33) is mounted on the oil cylinder mounting seat (32), the piston rod of the oil cylinder (33) is connected with the wedge-shaped block A (34), the wedge-shaped block A (34) is matched with the wedge-shaped block B (35), the wedge-shaped block B (35) is pushed to move, the outer wall of the wedge-shaped block B (35) is provided with a T-shaped block (36), the outside of the T-shaped block (36) is matched with a shovel (37) for controlling the movement of the slider and ensuring the coordinated operation of each part when the mold is opened and closed.

4. The mold of claim 2, wherein: The bottom of the sliding seat (31) is provided with a limiting block (38) for limiting the movement range of the slider and ensuring accurate positioning; the guide column (39) penetrates the guide sleeve (310), the guide sleeve (310) is fixed on the sliding seat (31), the pull block (311) is connected with an inner slider (312), the inner slider (312) is tightly matched with the product (11) through the slider insert (313), and accurate product forming is realized.

5. The mold of claim 1 wherein: The tooth twisting mechanism (4) comprises a tooth twisting seat (41) fixed on the female mold plate (24), a hydraulic motor (42) mounted on the outside of the tooth twisting seat (41), a transmission shaft (43) fixedly connected to the output end of the hydraulic motor (42), the other end of the transmission shaft (43) connected to the bottom of the gear seat (44) through a bearing, a large gear (46) fixedly sleeved on the outer wall of the transmission shaft (43), a small gear (45) arranged in the gear seat (44), the small gear (45) engaged with the large gear (46), the tooth twisting shaft (47) fixed in the inner hole of the small gear (45), the tooth twisting shaft (47) rotates synchronously with the small gear (45), and the other end of the tooth twisting shaft (47) is connected with the product (11) through threads, so that accurate tooth twisting is realized.

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