Molding cover body water gap hidden type injection mold

Abstract

The invention belongs to the technical field of molds, and particularly relates to a hidden injection mold for a water gap of a formed cover body. Comprising a heating plate, a hot nozzle installed below the heating plate, a water gap communicated with the hot nozzle through a flow channel and a die pressing assembly allowing the hot nozzle to be inserted therein, the die pressing assembly is provided with a forming male part corresponding to the hot nozzle, and a cover body forming cavity is formed between the forming male part and the die pressing assembly. And the water gap is positioned at the bottom of the inner side of the cover body forming cavity. According to the mold, the hot nozzle is arranged above the forming cavity, and the water gap is formed in the bottom of the inner side of the cover body forming cavity, so that hiding of water gap material residues is achieved, the appearance integrity and attractiveness of a cover body are remarkably improved, and obvious traces or protrusions caused by exposure of the water gap in a traditional mold are avoided; and meanwhile, due to the built-in design of the water gap, the functional problem caused by dust accumulation or difficulty in cleaning of the exposed water gap in the use process of the product is reduced, the service life of the product is further prolonged, and the user experience is further improved.

Description

[Technical field] The present application belongs to the field of mold technology, and specifically relates to a type of injection mold with a hidden sprue for a molding cover. [Background technology] When traditional injection molds are used to produce cover products, the sprue is usually set on the outside of the cover to simplify the runner design and ejection process. However, this method will cause the sprue material to remain on the outer surface of the product after molding, forming obvious marks or protrusions, which seriously affect the appearance integrity and aesthetics of the cover. In addition, the exposure of the sprue may also cause functional inconveniences during the use of the product, such as easy dust accumulation or becoming a dead corner for cleaning, thereby affecting the product's service life and user experience. [Summary of the invention] In order to solve the problem in the prior art that the gate is located on the outside and affects the appearance integrity when producing the cover body with the traditional mold, the present application provides a molding cover body gate hidden injection mold.

[0004] This application is implemented through the following technical solutions: A molding cover body sprue concealed injection mold comprises a heating plate, a hot nozzle installed below the heating plate, a sprue connected to the hot nozzle through a flow channel, and a die assembly for inserting the hot nozzle, a molding male part is arranged on the die assembly corresponding to the hot nozzle, a cover body molding cavity is formed between the molding male part and the die assembly, and the sprue is located at the inner bottom of the cover body molding cavity.

[0005] As described above, in the injection mold with hidden sprue of the molding cover body, a water transport sleeve is further provided between the hot nozzle and the molding public part, a water injection cavity is formed between the water transport sleeve and the molding public part, and a water channel connected to the water injection cavity is provided on the die assembly.

[0006] In the above-mentioned injection mold for forming a cover body with hidden sprue, the die assembly includes an upper die set, a lower die set, and a limiting mechanism for limiting the relative movement distance between the upper die set and the lower die set.

[0007] As described above, in a molding cover body sprue concealed injection mold, the upper mold assembly includes a first pressing plate and a second pressing plate, the first pressing plate is provided with a push plate abutting against the top of the cover body molding cavity, and the molding male part is connected to the second pressing plate.

[0008] In the above-mentioned injection mold with hidden sprue of a molding cover body, when the second pressure plate is separated from the first pressure plate, the second pressure plate drives the molding male part and the molding cover body attached to the molding male part away from the first pressure plate, and at the same time, the push plate pushes the top of the molding cover body to peel it off the molding male part.

[0009] In a molding cover body sprue hidden injection mold as described above, the limiting mechanism includes a first connecting block connected to the first pressure plate, a second connecting block connected to the lower mold assembly, and a pull rod passing through the first connecting block and the second connecting block, and the two ends of the pull rod are respectively provided with a first limiting block and a second limiting block abutting against the first connecting block and the second connecting block.

[0010] As described above, in a type of injection mold with hidden sprue for forming a cover body, a blowing assembly is also provided on the lower mold group, and the blowing assembly includes an air nozzle penetrating the cover body forming cavity, an air inlet provided on the outer side of the lower mold group, and a main air path channel and a branch air path channel respectively connecting the air inlet and the air nozzle.

[0011] In the above-mentioned injection mold for forming a cover body with hidden sprue, the air nozzle is staggered with the sprue.

[0012] The above-mentioned injection mold for forming a cover body with hidden sprue comprises a plurality of said molding male parts and a plurality of said cover body molding cavities formed between each of said molding male parts and said die assembly.

[0013] In the above-mentioned injection mold for forming a cover body with hidden sprue, the water channel is connected to the top of the water transport sleeve, and waterproof rubber rings are respectively provided at the connection points between the forming component and the top and bottom of the water transport sleeve.

[0014] Compared with the prior art, this application has the following advantages: The present application discloses a concealed injection mold for a molding cover body with a sprue. By arranging the hot nozzle above the molding cavity and arranging the sprue at the inner bottom of the cover body molding cavity, the sprue material residue is concealed, thereby significantly improving the appearance integrity and aesthetics of the cover body and avoiding obvious marks or protrusions caused by the exposed sprue in traditional molds. At the same time, the built-in design of the sprue also reduces functional problems caused by dust accumulation or difficulty in cleaning at the exposed sprue during use of the product, further improving the product's service life and user experience.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional stereogram in the embodiment of the present application; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 Cross-sectional view at AA in the middle; Figure 4 yes Figure 3 Magnified view at A in the middle; Figure 5 yes Figure 2 Cross-sectional view at BB. [Specific implementation method] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0018] See also Figures 1 to 5 A molding cover body sprue hidden injection mold, comprising a heating plate 1, a hot nozzle 2 installed below the heating plate 1, a sprue 3 connected to the hot nozzle 2 through a flow channel, and a die assembly 4 for the hot nozzle 2 to be inserted, a molding male part 5 is provided on the die assembly 4 corresponding to the hot nozzle 2, a cover body molding cavity 6 is formed between the molding male part 5 and the die assembly 4, and the sprue 3 is located at the inner bottom of the cover body molding cavity 6.

[0019] The present application discloses a concealed injection mold for a molding cover body with a sprue. By arranging the hot nozzle above the molding cavity and arranging the sprue at the inner bottom of the cover body molding cavity, the sprue material residue is concealed, thereby significantly improving the appearance integrity and aesthetics of the cover body and avoiding obvious marks or protrusions caused by the exposed sprue in traditional molds. At the same time, the built-in design of the sprue also reduces functional problems caused by dust accumulation or difficulty in cleaning at the exposed sprue during use of the product, further improving the product's service life and user experience.

[0020] Furthermore, as a preferred implementation mode of the present invention but not a limitation, a water transport sleeve 7 is provided between the hot nozzle 2 and the molding male component 5, a water injection cavity 8 is formed between the water transport sleeve 7 and the molding male component 5, and a water channel 9 connected to the water injection cavity 8 is provided on the die assembly 4.

[0021] In this embodiment, since the water inlet is arranged on the inner side and the flow channel is lengthened, insufficient temperature will cause blockage of the flow channel, but too high temperature will make it difficult to cool the product. The water transport sleeve 7 can effectively isolate the high temperature of the hot nozzle 2 and prevent it from being directly transmitted to the molding public part 5 and the cover body molding cavity 6, thereby avoiding problems such as deterioration of the plastic material or poor molding caused by excessive temperature. Secondly, by injecting cooling water into the water injection cavity 8 through the water channel 9, the molding public part 5 can be quickly cooled, the solidification process of the cover product can be accelerated, and the production efficiency can be improved. In addition, this cooling method can also help reduce product deformation and dimensional deviation, and improve product quality.

[0022] Furthermore, as a preferred implementation of the present solution but not a limitation, the die assembly 4 includes an upper die set 41 , a lower die set 42 , and a limiting mechanism 43 for limiting the relative movement distance between the upper die set 41 and the lower die set 42 .

[0023] In this embodiment, the limit mechanism 43 can accurately control the relative movement distance between the upper die set 41 and the lower die set 42, ensuring the coordinated movement of the various parts of the mold during the mold opening and closing process, thereby avoiding mold damage or product defects caused by improper movement distance. This design not only improves the service life of the mold, but also ensures the consistency and stability of the product. Its working principle is that the limit mechanism 43 limits the movement of the upper die set 41 and the lower die set 42 by mechanical or hydraulic means. When the preset movement distance is reached, the limit mechanism 43 will automatically lock or provide a reverse force to prevent further movement.

[0024] Furthermore, as a preferred embodiment of the present solution but not a limitation, the upper mold assembly 41 includes a first pressing plate 411 and a second pressing plate 412 , the first pressing plate 411 is provided with a pushing plate 413 abutting against the top of the cover body molding cavity 6 , and the molding male component 5 is connected to the second pressing plate 412 .

[0025] In this embodiment, by the contact between the push plate 413 and the top of the cover body molding cavity 6, the molded cover body can be effectively pushed away from the molded male component 5 when the mold is opened, reducing the product sticking to the mold and improving production efficiency. Secondly, the molded male component 5 is connected to the second pressing plate 412, so that during the mold opening process, the second pressing plate 412 can drive the molded male component 5 and the molded cover body attached thereto away from the first pressing plate 411, providing sufficient space for the push plate 413 to perform the pushing operation, ensuring the smooth demolding of the product. This structure also helps to reduce damage to the molded cover body and improve product quality. Its working principle is that when the mold is opened, the first pressing plate 411 and the second pressing plate 412 are first separated from the lower mold assembly 42, driving the molded male component 5 and the molded cover body to move upward, and then the first pressing plate is limited, and the push plate 413 pushes the top of the molded cover body to completely separate it from the molded male component 5.

[0026] Furthermore, as a preferred implementation mode of the present invention but not a limitation, when the second pressure plate 412 is separated from the first pressure plate 411, the second pressure plate 412 drives the molding male component 5 and the molding cover body attached to the molding male component 5 away from the first pressure plate 411, and at the same time, the push plate 413 pushes the top of the molding cover body to peel it off the molding male component 5.

[0027] Furthermore, as a preferred embodiment of the present invention but not a limitation, the limiting mechanism 43 includes a first connecting block 431 connected to the first pressure plate 411, a second connecting block 432 connected to the lower mold assembly 42, and a pull rod 433 passing through the first connecting block 431 and the second connecting block 432, and the two ends of the pull rod 433 are respectively provided with a first limiting block 434 and a second limiting block 435 abutting against the first connecting block 431 and the second connecting block 432.

[0028] In this embodiment, the stability and consistency of the mold during the mold opening and closing process are ensured, mold damage or product defects caused by improper moving distance are avoided, and the service life of the mold and the qualified rate of the product are improved. Secondly, through the cooperation of the pull rod 433 and the limit block, the moving distance can be easily adjusted and set to meet the production requirements of different products, thereby enhancing the versatility and flexibility of the mold.

[0029] Furthermore, as a preferred embodiment of the present scheme but not a limitation, a blowing assembly 10 is also provided on the lower mold assembly 42, and the blowing assembly 10 includes an air nozzle 101 penetrating the cover body molding cavity 6, an air inlet 102 provided on the outside of the lower mold assembly 42, and a main air path channel 103 and a branch air path channel 104 respectively connecting the air inlet 102 and the air nozzle 101.

[0030] In this embodiment, by blowing compressed air into the cover body molding cavity 6 through the air nozzle 101, the friction between the product and the molding cavity can be effectively reduced, which helps the product to be demolded more smoothly, reduces the probability of mold sticking, and improves production efficiency. Secondly, the blowing component 10 also helps to remove residual plastic and impurities in the molding cavity, keeps the mold clean, extends the service life of the mold, and ensures the consistency and quality stability of the product. Its working principle is that compressed air enters from the air inlet 102, is distributed to each air nozzle 101 through the main air channel 103 and the branch air channel 104, and then is blown into the cover body molding cavity 6 from the air nozzle 101, forming an air cushion effect, reducing the contact area and friction between the product and the molding cavity.

[0031] Further, as a preferred implementation manner of the present solution but not a limitation, the air nozzle 101 and the water nozzle 3 are arranged in a staggered manner.

[0032] In this embodiment, the airflow blown out by the air nozzle 101 will not directly impact the sprue 3 area, avoiding possible disturbance or uneven cooling of the plastic material at the sprue 3, thereby ensuring the stability of the injection molding process and the consistency of product quality. Secondly, this design also helps to reduce the airflow from blowing or deforming the plastic at the sprue 3, reducing the incidence of product defects, such as burrs or unevenness at the sprue 3. The offset setting makes the airflow path of the air nozzle 101 deviate from the plastic flow channel of the sprue 3, and the airflow mainly acts on other areas of the product to assist demolding, while having little impact on the sprue 3.

[0033] Furthermore, as a preferred implementation manner of the present solution but not limiting, it includes a plurality of the male molding components 5 , and a plurality of the cover body molding cavities 6 formed between each of the male molding components 5 and the die assembly 4 .

[0034] In this embodiment, through the multi-cavity design, multiple cover products can be produced simultaneously in the same mold cycle, which greatly improves production efficiency and capacity and reduces the production cost of each unit product. Multiple molding components 5 are precisely matched with the die assembly 4 to form multiple mutually isolated cover molding cavities 6, and each cavity can independently perform process steps such as injection molding, cooling and demoulding without interfering with each other.

[0035] Further, as a preferred implementation of the present solution but not limiting, the water channel 9 is connected to the top of the water transport jacket 7 , and waterproof rubber rings 11 are respectively provided at the top and bottom connections between the molded male component 5 and the water transport jacket 7 .

[0036] In this embodiment, cooling water is injected into the water transport sleeve 7 through the water channel 9, so as to realize efficient cooling of the molded male part 5, accelerate the curing process of the cover product, and improve production efficiency. At the same time, the provision of the waterproof rubber ring 11 effectively prevents the leakage of cooling water, ensures the dryness and cleanliness of the inside of the mold, and the waterproof rubber ring 11 prevents the leakage of cooling water at the connection between the molded male part 5 and the water transport sleeve 7 through its good sealing performance, avoiding mold corrosion or product defects caused by water leakage.

[0037] The working principle of this embodiment is as follows: The present application discloses a concealed injection mold for a molding cover body with a sprue. By arranging the hot nozzle above the molding cavity and arranging the sprue at the inner bottom of the cover body molding cavity, the sprue material residue is concealed, thereby significantly improving the appearance integrity and aesthetics of the cover body and avoiding obvious marks or protrusions caused by the exposed sprue in traditional molds. At the same time, the built-in design of the sprue also reduces functional problems caused by dust accumulation or difficulty in cleaning at the exposed sprue during use of the product, further improving the product's service life and user experience.

[0038] The above are implementation methods provided in combination with specific contents, and it is not intended that the specific implementation of this application is limited to these descriptions. Any method structure similar to the present application, or a number of technical deductions or replacements based on the concept of the present application, should be considered as the protection scope of this application.

Claims

1. A mold for forming a cover body with a hidden nozzle, characterized in that: The invention comprises a heating plate (1), a hot nozzle (2) installed below the heating plate (1), a water outlet (3) connected to the hot nozzle (2) through a flow channel, and a die assembly (4) for the hot nozzle (2) to be inserted, wherein a molding male part (5) is arranged on the die assembly (4) corresponding to the hot nozzle (2), a cover body molding cavity (6) is formed between the molding male part (5) and the die assembly (4), and the water outlet (3) is located at the inner bottom of the cover body molding cavity (6).

2. The hidden gate type injection mold for forming a cover body according to claim 1, characterized in that: A water transport sleeve (7) is further provided between the hot nozzle (2) and the molding male component (5), a water injection cavity (8) is formed between the water transport sleeve (7) and the molding male component (5), and a water channel (9) communicating with the water injection cavity (8) is provided on the die assembly (4).

3. The hidden gate type injection mold for forming a cover body according to claim 1, characterized in that: The die assembly (4) comprises an upper die set (41), a lower die set (42), and a limiting mechanism (43) for limiting the relative movement distance between the upper die set (41) and the lower die set (42).

4. The hidden gate injection mold for forming a cover body according to claim 3, characterized in that: The upper mold assembly (41) comprises a first pressing plate (411) and a second pressing plate (412); the first pressing plate (411) is provided with a pushing plate (413) abutting against the top of the cover body molding cavity (6); and the molding male component (5) is connected to the second pressing plate (412).

5. The hidden gate type injection mold for forming a cover body according to claim 4, characterized in that: When the second pressing plate (412) is separated from the first pressing plate (411), the second pressing plate (412) drives the molding male component (5) and the molding cover body attached to the molding male component (5) away from the first pressing plate (411), and at the same time, the pushing plate (413) pushes the top of the molding cover body to peel it off the molding male component (5).

6. The cover body hidden gate injection mold according to claim 4, characterized in that: The limiting mechanism (43) comprises a first connecting block (431) connected to the first pressing plate (411), a second connecting block (432) connected to the lower mold assembly (42), and a pull rod (433) passing through the first connecting block (431) and the second connecting block (432), wherein the first limiting block (434) and the second limiting block (435) are respectively provided at both ends of the pull rod (433) and abut against the first connecting block (431) and the second connecting block (432).

7. The cover body hidden gate injection mold according to claim 3, characterized in that: The lower mold assembly (42) is also provided with a blowing assembly (10), and the blowing assembly (10) comprises an air nozzle (101) penetrating the cover body molding cavity (6), an air inlet (102) provided on the outside of the lower mold assembly (42), and a main air path channel (103) and a branch air path channel (104) respectively connecting the air inlet (102) and the air nozzle (101).

8. The cover body hidden gate injection mold according to claim 7, characterized in that: The air nozzle (101) and the water outlet (3) are arranged in a staggered manner.

9. The cover body hidden gate injection mold according to claim 1, characterized in that: It comprises a plurality of the male molding components (5), and a plurality of the cover body molding cavities (6) formed between each of the male molding components (5) and the die assembly (4).

10. The cover body hidden gate injection mold according to claim 2, characterized in that: The water channel (9) is connected to the top of the water transport sleeve (7), and waterproof rubber rings (11) are respectively provided at the top and bottom connection points between the molded male component (5) and the water transport sleeve (7).

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