Latent three-claw glue feeding appearance traceless injection mold structure

Abstract

This utility model provides a concealed three-claw injection mold structure with a seamless appearance, relating to the mold industry. It includes, from top to bottom, a panel, a backing plate, an upper moving mold, a push plate, and a base. The upper moving mold has a groove, and the base houses a core. The core slidably passes through the push plate. On the push plate, relatively slidable molding blocks are arranged on both sides of the core. Semi-circular arc grooves are formed on the opposite end faces of the two molding blocks. An injection insert is embedded at the bottom of the groove, and the injection insert has an injection channel. An injection groove is formed at the top of the core, and several diversion channels are circumferentially formed on the inner wall of the injection groove. During injection molding, the two molding blocks close, and the semi-circular arc groove closes, covering the core. Hot melt adhesive flows from the injection channel of the injection insert to the injection groove at the top of the core, and finally through the diversion channels to the space between the semi-circular arc groove and the core, used to mold a toothbrush handle. The gate mark is located on the inner wall of the handle, avoiding the gate being on the upper surface of the handle, eliminating the need for a decorative part to cover it, and reducing production costs.

Description

Technical Field

[0001] This utility model relates to the field of molds, and more specifically, to a submerged three-claw injection mold structure with a seamless appearance. Background Technology

[0002] A mold is a tool used to create shaped products. Different shapes of molds are used to create products of different shapes, such as... Figure 1 The electric toothbrush handle shown is traditionally injection molded using a top-side injection method. The glue point is on the top surface of the handle, and a decorative part is needed to cover the gate. This method requires molding an extra part to cover the gate point, which increases production costs. Therefore, it is urgent to optimize and upgrade the existing electric toothbrush handle mold. Utility Model Content

[0003] This utility model provides a concealed three-claw injection mold structure with a seamless appearance, which aims to solve the technical problem that the gate of the traditional electric toothbrush handle is located on the upper surface of the handle, which leads to the need to cover the gate with a decorative part, resulting in increased production costs.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a concealed three-claw injection mold structure with a seamless appearance, comprising, from top to bottom, a panel, a backing plate, an upper moving mold, a push plate, and a base. The upper moving mold has a groove, and the base is provided with a core. The core slidably passes through the push plate. The push plate is provided with relatively slidable molding blocks on both sides of the core. The opposite end faces of the two molding blocks are provided with semi-circular arc grooves. An injection insert is embedded at the bottom of the groove. The injection insert has an injection channel. The top of the core has an injection groove. The inner side wall of the injection groove has several diversion channels circumferentially.

[0005] Furthermore, the diversion channel includes three channels, which are equidistantly arranged circumferentially on the inner sidewall of the glue inlet groove.

[0006] Furthermore, the inner wall of the groove is provided with an inclined guide strip, and the side of the molding block is provided with an inclined guide groove.

[0007] Furthermore, the push plate is provided with a hook block in the shape of a number 7, and the bottom of the forming block is provided with a guide groove in the shape of a number 7.

[0008] Furthermore, the upper end face of the molding block has an inclined groove, and a spring is installed in the inclined groove.

[0009] Furthermore, a push rod is provided at the bottom of the push plate, and the push rod can slide through the base.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model relates to a concealed three-claw injection mold with a seamless appearance. The mold has a simple and ingenious design, comprising, from top to bottom, a panel, a backing plate, an upper moving mold, a push plate, and a base. The upper moving mold has a groove, and the base houses the core. The core slides through the push plate, which has relatively sliding molding blocks on both sides of the core. The opposite end faces of the two molding blocks have semi-circular arc grooves. A injection insert with an injection channel is embedded at the bottom of the groove, and the top of the core has an injection groove. Several diversion channels are circumferentially formed on the inner wall of the injection groove. During injection molding, the two molding blocks close, and the semi-circular arc grooves cover the core. Hot melt adhesive flows from the injection channel of the injection insert to the injection groove at the top of the core, and finally through the diversion channels to the space between the semi-circular arc groove and the core, forming the toothbrush handle. The gate mark is located on the inner wall of the handle, avoiding the gate being on the upper surface of the handle. This eliminates the need for a decorative part to cover it, reducing production costs. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a structural diagram of an electric toothbrush handle;

[0014] Figure 2 This is a schematic diagram of the structure of the concealed three-claw injection mold with a seamless appearance, which is a utility model.

[0015] Figure 3 This is a schematic diagram of the molding block structure of the latent three-claw injection mold structure with a seamless appearance, which is a utility model.

[0016] Figure 4 This is a schematic diagram of the upper moving mold structure of the submerged three-claw injection mold structure with a seamless appearance according to this utility model;

[0017] Figure 5 This is a partial cross-sectional view of the structure of the concealed three-claw injection mold with a seamless appearance, which is a utility model.

[0018] Figure 6 This is a schematic diagram of the core and molding block structure of the concealed three-claw injection mold structure with seamless appearance of this utility model;

[0019] Figure 7 This is a schematic diagram of the molding block structure of the submerged three-claw injection mold structure with a seamless appearance, which is a utility model.

[0020] Explanation of main component symbols

[0021] 10. Panel;

[0022] 20. Pad;

[0023] 30. Upper moving mold; 301. Groove; 3011. Guide bar; 302. Inlet insert; 3021. Inlet channel;

[0024] 40. Push plate; 401. Forming block; 4011. Inclined guide groove; 4012. Guide groove; 4013. Semi-circular arc groove; 402. Hook block;

[0025] 50. Base; 501. Core; 5011. Glue inlet groove; 5012. Diversion channel;

[0026] 60. Electric toothbrush handle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Example

[0031] Reference Figure 2-7 As shown, this utility model discloses a concealed three-claw injection molding mold structure with a seamless appearance, including a panel 10, a pad 20, an upper moving mold 30, a push plate 40, and a base 50 from top to bottom. The upper moving mold 30 has a groove 301, and the base 50 is provided with a core 501. The core 501 slides through the push plate 40. The push plate 40 has relatively sliding molding blocks 401 on both sides of the core 501. The opposite end faces of the two molding blocks 401 have semi-circular arc grooves 4013. When the mold is closed, the upper moving mold 30 covers the molding blocks 401 downwards, so that the semi-circular arc grooves 4013 of the two molding blocks 401 close to form a cavity covering the core 501. The gap between the cavity and the core 501 is used to form a toothbrush handle. Specifically, an inclined guide bar 3011 is provided on the inner wall of the groove 301, and an inclined guide groove 4011 is opened on the side of the forming block 401. The guide bar 3011 is placed in the inclined guide groove 4011. The up and down movement of the upper moving mold 30 is the up and down movement of the guide bar 3011. Through the guide groove 4012, the two forming blocks 401 are driven to move horizontally, thus realizing the opening or closing of the two forming blocks 401.

[0032] Furthermore, the push plate 40 is provided with a hook block 402 in the shape of a number 7, and the bottom of the forming block 401 is provided with a guide groove 4012 in the shape of a number 7. Specifically, the hook block 402 is placed inside the guide groove 4012, and the forming block 401 can only move in the horizontal direction and cannot move in the vertical direction to prevent the forming block 401 from scratching the surface of the toothbrush handle when moving up and down. The upper end face of the forming block 401 has an inclined groove, and a spring is installed in the inclined groove. When the mold is opened, the bottom of the groove 301 of the moving mold core will push it apart from the forming block 401, which plays a role in assisting in separating the forming block 401.

[0033] Reference Figure 2-7As shown, a glue inlet 302 is embedded at the bottom of the groove 301. The glue inlet 302 has a glue inlet channel 3021, and a glue inlet groove 5011 is opened at the top of the core 501. Several diversion channels 5012 are circumferentially opened on the inner sidewall of the glue inlet groove 5011. In this embodiment, there are three diversion channels 5012, which are equidistantly arranged on the inner sidewall of the glue inlet groove 5011. Specifically, when the mold is closed, the hot melt glue enters the glue inlet channel 3021 of the glue inlet 302 through the glue inlet of the panel 10, then enters the glue inlet groove 5011 of the core 501, and finally enters the gap between the core 501 and the cavity from the three diversion channels 5012 of the glue inlet groove 5011. In this way, the gate of the electric toothbrush handle 60 after molding is on the inner sidewall. The molded handle has no obvious gate marks or other defects on the product appearance surface, which not only improves the aesthetics of the product, but also reduces the need for subsequent processing (such as polishing, painting, etc.) and improves production efficiency. The three-channel 5012 injection design in this embodiment means that there are three injection points evenly distributed around the mold. This design helps to ensure that the plastic melt can fill the entire mold cavity more evenly, and also makes it easier to control the injection pressure and speed, thereby ensuring the consistency of product quality.

[0034] In addition, a push rod is provided at the bottom of the push plate 40. The push rod can slide through the base 50. Specifically, when the mold is opened, the moving template actuates the two forming blocks 401 to separate and drive them from the push plate 40. The push rod pushes the push plate 40 to push the top handle, so that the handle falls off the core 501, thus completing the demolding of the product.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A concealed three-claw injection molding mold structure with a seamless appearance, used for injection molding electric toothbrush handles, characterized in that: The device includes, from top to bottom, a panel, a pad, an upper moving mold, a push plate, and a base. The upper moving mold has a groove, and the base has a core. The core slides through the push plate. The push plate has relatively sliding molding blocks on both sides of the core. The opposite end faces of the two molding blocks have semi-circular arc grooves. A glue inlet is embedded at the bottom of the groove. The glue inlet has a glue inlet channel. The top of the core has a glue inlet groove. The inner side wall of the glue inlet groove has several diversion channels circumferentially.

2. The latent 3-claw gate pin no-weld line appearance injection mold structure according to claim 1, characterized in that: The diversion channel includes three channels, which are equidistantly arranged circumferentially on the inner side wall of the glue inlet groove.

3. The submerged three-jaw injection mold structure for seamless appearance as described in claim 1, characterized in that: The inner wall of the groove is provided with an inclined guide strip, and the side of the molding block is provided with an inclined guide groove.

4. The submerged three-jaw injection mold structure with seamless appearance as described in claim 1, characterized in that: The push plate is provided with a hook block in the shape of a number 7, and the bottom of the forming block is provided with a guide groove in the shape of a number 7.

5. The submerged three-jaw injection mold structure for seamless appearance as described in claim 1, characterized in that: The upper end face of the molding block has an inclined groove, and a spring is installed in the inclined groove.

6. The submerged three-jaw injection mold structure for seamless appearance as described in claim 1, characterized in that: A push rod is provided at the bottom of the push plate, and the push rod can slide through the base.

Images