High light traceless injection mold

Abstract

The utility model provides a kind of high light traceless injection mold, including lower mould component, the lower mould component includes lower mould plate, micro air pump, connecting pipe, electric telescopic link, connecting frame, connecting plate, insert block, ejector rod, push plate, hydraulic bumper, spring, roof, thimble and air cylinder;The rear surface of the lower mould plate is equipped with micro air pump, the rear surface of the micro air pump is communicated with connecting pipe, the inside wall of the lower mould plate is fixedly connected with electric telescopic link symmetrically.The utility model works through micro air pump, after moulding, air inside cavity is extracted through connecting pipe, so that material is filled sufficiently, insert block is used to fill up air extraction hole groove simultaneously, avoid surplus material to appear on product surface, improve product quality.Hydraulic bumper is installed between push plate and roof, when the last section of ejection stroke, gradually decelerate using buffer, avoid impact force to cause injection product surface to appear white mark, crack, deformation and other quality problems.

Description

Technical Field

[0001] This utility model relates to a mold, and more particularly to a high-gloss, seamless injection mold, belonging to the field of injection mold technology. Background Technology

[0002] Injection molds are key equipment in plastic molding and processing, widely used in industries such as electronics, automotive, and medical. Their working principle involves injecting molten plastic into a closed mold cavity through an injection molding machine, where it cools and solidifies to form the desired plastic product. The mold mainly consists of a gating system, molding parts, and structural parts. The gating system is responsible for transporting the molten plastic, the molding parts determine the shape of the product, and the structural parts ensure the mold's opening, closing, and demolding actions. Injection molds are characterized by high precision, high efficiency, and good consistency in mass production, enabling the production of a diverse range of products, from precision electronic component housings to large automotive parts.

[0003] During injection molding, molten plastic may not completely fill the tiny structures of the mold cavity, leading to defects such as insufficient glue and surface depressions, affecting the product's appearance. Furthermore, traditional ejection systems use a mechanical hard stop. When the ejector rod pushes the ejector plate to complete the ejection action and reaches the end of its stroke, the ejector rod thrust instantly drops to zero. The ejector plate and its ejector pins still possess significant kinetic energy, which is converted into an impact force on the injection-molded product in a very short time. This instantaneous impact force can cause excessive stress concentration in certain areas of the product, resulting in quality problems such as white marks, cracks, and deformation. Therefore, a high-gloss, mark-free injection mold is proposed. Utility Model Content

[0004] In view of this, the present invention provides a high-gloss, seamless injection mold to solve or alleviate one of the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: a high-gloss, traceless injection mold includes a lower mold assembly, wherein the lower mold assembly includes a lower template, a micro air pump, a connecting pipe, an electric telescopic rod, a connecting frame, a connecting plate, an insert, an ejector rod, a push plate, a hydraulic buffer, a spring, a top plate, an ejector pin, and a cylinder;

[0006] A miniature air pump is installed on the rear surface of the lower template, and a connecting pipe is connected to the rear surface of the miniature air pump. Electric telescopic rods are symmetrically fixedly connected to the inner sidewall of the lower template. A connecting frame is fixedly connected to the top of the electric telescopic rod. A connecting plate is symmetrically fixedly connected to the top of the connecting frame. An insert is fixedly connected to the top of the connecting plate. A push plate is fixedly connected to the top of the push rod. Hydraulic buffers are symmetrically installed on the top of the push plate. A spring is sleeved on the outer sidewall of the hydraulic buffer. A top plate is fixedly connected to the top of the hydraulic buffer. A pin is fixedly connected to the top of the top plate. A cylinder is installed on the top of the push plate.

[0007] A further preferred embodiment: the upper surface of the lower template is symmetrically and fixedly connected with guide sleeves.

[0008] A further preferred embodiment: the top of the lower template has a cavity.

[0009] A further preferred embodiment: the ejector pin is slidably connected to the inner sidewall of the lower template.

[0010] A further preferred embodiment: an upper mold assembly is provided above the lower mold assembly, the upper mold assembly including an upper template and an injection port;

[0011] The top of the upper template has an injection port.

[0012] A further preferred embodiment: the lower surface of the upper template is symmetrically and fixedly connected with guide posts.

[0013] A further preferred embodiment: the guide post is disposed on the inner side wall of the guide sleeve.

[0014] A further preferred embodiment: one end of the top rod extends through the lower template into the interior.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] I. This utility model uses a micro air pump to extract air from the cavity through a connecting pipe after mold closing, so that the material can be fully filled. At the same time, inserts are used to fill the air extraction hole grooves to avoid excess material on the product surface and improve product quality.

[0017] II. This utility model installs a hydraulic buffer between the push plate and the top plate. At the end of the ejection stroke, the buffer gradually decelerates the product, thus avoiding quality problems such as white marks, cracks, and deformation on the surface of the injection molded product caused by the impact force.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a rear view structural diagram of the present invention;

[0022] Figure 3 This is a front view of the present invention.

[0023] Figure 4 This is a structural diagram of the connecting frame of this utility model.

[0024] Reference numerals: 10. Lower mold assembly; 11. Lower template; 13. Guide sleeve; 14. Cavity; 15. Miniature air pump; 16. Connecting pipe; 17. Electric telescopic rod; 18. Connecting frame; 19. Connecting plate; 110. Insert; 111. Ejector rod; 112. Push plate; 113. Hydraulic buffer; 114. Spring; 115. Top plate; 116. Ejector pin; 117. Cylinder; 20. Upper mold assembly; 21. Upper template; 22. Injection port; 23. Guide pillar. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-4 As shown, this utility model embodiment provides a high-gloss, seamless injection mold, including a lower mold assembly 10. The lower mold assembly 10 includes a lower mold plate 11, a micro air pump 15, a connecting pipe 16, an electric telescopic rod 17, a connecting frame 18, a connecting plate 19, an insert 110, an ejector rod 111, a push plate 112, a hydraulic buffer 113, a spring 114, a top plate 115, an ejector pin 116, and a cylinder 117.

[0028] A miniature air pump 15 is installed on the rear surface of the lower template 11. A connecting pipe 16 is connected to the rear surface of the miniature air pump 15. An electric telescopic rod 17 is symmetrically fixedly connected to the inner side wall of the lower template 11. A connecting frame 18 is fixedly connected to the top of the electric telescopic rod 17. A connecting plate 19 is symmetrically fixedly connected to the top of the connecting frame 18. An insert 110 is fixedly connected to the top of the connecting plate 19. A push plate 112 is fixedly connected to the top of the push rod 111. A hydraulic buffer 113 is symmetrically installed on the top of the push plate 112. A spring 114 is sleeved on the outer side wall of the hydraulic buffer 113. The spring 114 is used for the hydraulic buffer 113. The hydraulic buffer 113 is automatically reset. A top plate 115 is fixedly connected to the top of the hydraulic buffer 113. An ejector pin 116 is fixedly connected to the top of the top plate 115. A cylinder 117 is installed on the top of the push plate 112. The material is injected into the cavity 14 through the injection port 22. After cooling and molding, the mold is opened. The ejector rod 111 pushes the push plate 112 to move. The top plate 115 and the push plate 112 are rigidly connected by the cylinder 117. The ejector pin 116 ejects the product. At the end of the ejection stroke, the cylinder 117 retracts. The hydraulic buffer 113 gradually decelerates the product to avoid quality problems such as white marks, cracks, and deformation on the surface of the injection molded product caused by the impact force.

[0029] In this embodiment, specifically: guide sleeves 13 are symmetrically fixedly connected to the upper surface of the lower template 11, and the dimensions of the guide sleeves 13 and the guide posts 23 are adapted to each other.

[0030] In this embodiment, specifically: a cavity 14 is provided at the top of the lower template 11, and the product is cooled and formed inside the cavity 14.

[0031] In this embodiment, specifically: the ejector pin 116 is slidably connected to the inner sidewall of the lower template 11, and the product is ejected by the ejector pin 116.

[0032] In this embodiment, specifically: an upper mold assembly 20 is provided above the lower mold assembly 10, and the upper mold assembly 20 includes an upper template 21 and an injection port 22;

[0033] The top of the upper template 21 is provided with an injection port 22, through which the material is injected into the cavity 14.

[0034] In this embodiment, specifically: guide posts 23 are symmetrically fixedly connected to the lower surface of the upper template 21.

[0035] In this embodiment, specifically: the guide post 23 is disposed on the inner side wall of the guide sleeve 13, and the upper and lower molds are accurately closed by the cooperation of the guide post 23 and the guide sleeve 13.

[0036] In this embodiment, specifically: one end of the push rod 111 extends through the lower template 11 into the interior, and the push rod 111 pushes the push plate 112 to move, completing the ejection action.

[0037] In operation, this invention works as follows: the upper and lower molds are accurately closed by the cooperation of the guide pillar 23 and the guide sleeve 13. After the mold is closed, the micro air pump 15 operates and the air inside the cavity 14 is extracted through the connecting pipe 16 to ensure that the material is fully filled. At the same time, the electric telescopic rod 17 pushes the connecting frame 18 to move upward, so that the insert 110 closes the air extraction slot, avoiding the presence of excess material on the product surface and improving product quality. The material is injected into the cavity 14 through the injection port 22. After cooling and molding, the mold is opened, and the ejector rod 111 pushes the push plate 112 to move. The cylinder 117 rigidly connects the top plate 115 and the push plate 112. The ejector pin 116 ejects the product. At the end of the ejection stroke, the cylinder 117 retracts, and the resistance of the hydraulic buffer 113 gradually decelerates the ejector pin 116 until the speed is zero, avoiding quality problems such as white marks, cracks, and deformation on the surface of the injection molded product caused by the impact force.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A high-gloss, seamless injection mold, comprising a lower mold assembly (10), characterized in that: The lower mold assembly (10) includes a lower mold plate (11), a micro air pump (15), a connecting pipe (16), an electric telescopic rod (17), a connecting frame (18), a connecting plate (19), an insert (110), a push rod (111), a push plate (112), a hydraulic buffer (113), a spring (114), a top plate (115), an ejector pin (116), and a cylinder (117); A miniature air pump (15) is installed on the rear surface of the lower template (11). A connecting pipe (16) is connected to the rear surface of the miniature air pump (15). An electric telescopic rod (17) is symmetrically fixedly connected to the inner side wall of the lower template (11). A connecting frame (18) is fixedly connected to the top of the electric telescopic rod (17). A connecting plate (19) is symmetrically fixedly connected to the top of the connecting frame (18). An insert (110) is fixedly connected to the top of the connecting plate (19). A push plate (112) is fixedly connected to the top of the push rod (111). A hydraulic buffer (113) is symmetrically installed on the top of the push plate (112). A spring (114) is sleeved on the outer side wall of the hydraulic buffer (113). A top plate (115) is fixedly connected to the top of the hydraulic buffer (113). A pin (116) is fixedly connected to the top of the top plate (115). A cylinder (117) is installed on the top of the push plate (112).

2. The high-gloss, seamless injection mold according to claim 1, characterized in that: The upper surface of the lower template (11) is symmetrically fixedly connected with guide sleeves (13).

3. The high-gloss, seamless injection mold according to claim 1, characterized in that: The top of the lower template (11) has a cavity (14).

4. The high-gloss, seamless injection mold according to claim 1, characterized in that: The ejector pin (116) is slidably connected to the inner wall of the lower template (11).

5. A high-gloss, seamless injection mold according to claim 1, characterized in that: An upper mold assembly (20) is provided above the lower mold assembly (10), the upper mold assembly (20) including an upper template (21) and an injection port (22); The top of the upper template (21) is provided with an injection port (22).

6. A high-gloss, seamless injection mold according to claim 5, characterized in that: The lower surface of the upper template (21) is symmetrically fixed with guide posts (23).

7. A high-gloss, seamless injection mold according to claim 6, characterized in that: The guide post (23) is disposed on the inner side wall of the guide sleeve (13).

8. A high-gloss, seamless injection mold according to claim 1, characterized in that: One end of the top rod (111) extends through the lower template (11) into the interior.

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