A new elastomeric spray tip

Abstract

This application discloses a novel elastomer spraying head, relating to the field of elastomer product processing technology, used for injecting material into a mold cavity. It includes a nozzle, a nozzle valve body, and a stirring valve body. The nozzle comprises a nozzle body and a nozzle core, with the nozzle core installed within the nozzle body. The nozzle valve body and the stirring valve body are both installed at the tail end of the nozzle valve body. The nozzle valve body has a first air pressure inlet connected to multiple airflow channels in the nozzle core, which in turn connect to the air jet outlet of the nozzle body. The nozzle core has a discharge head at its head, located within the air jet outlet, with a gap between the outer wall of the discharge head and the inner wall of the air jet outlet. This application enables the elastomer material to be atomized and fully contacted with the inner wall of the mold cavity, avoiding bubble formation and resulting in a more defined angular shape of the molded product, thus fully meeting the processing requirements of complex products with sharp edges.

Description

Technical Field

[0001] This application relates to the field of elastomer product processing technology, specifically to a novel elastomer spraying head. Background Technology

[0002] In the manufacturing process of elastomer products, the mainstream method involves pouring the elastomer material into a mold cavity via a gating head for foaming and molding. Specifically, the injection port is aligned with the bottom of the mold cavity, and the material foams from the bottom up, filling the cavity. This traditional injection method has significant technical drawbacks:

[0003] 1. Bubble problem: When the material foams and rises from the bottom, the lateral pressure is insufficient, which prevents the air between the side of the mold cavity and the material from being effectively discharged. This results in dense bubbles forming on the side of the product, which significantly affects the appearance quality.

[0004] Second, defects in filling sharp corners: For complex structural products with sharp corners on the side walls, it is difficult for the material to fully fill the corner areas, resulting in blurred outlines and missing details after molding. This not only fails to meet the design expectations but also reduces the product's aesthetics and market competitiveness. Utility Model Content

[0005] In view of this, this application provides a novel elastomer spraying head to solve the technical problems that traditional injection methods easily cause air bubbles in the appearance of molded products and make it difficult to meet the processing requirements of complex products.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A novel elastomer spraying head for injecting material into a mold cavity includes:

[0008] The nozzle includes a nozzle body and a nozzle inner core, the nozzle inner core being installed inside the nozzle body;

[0009] The nozzle valve body and the stirring valve body are provided, wherein the nozzle valve body is installed at the tail end of the nozzle body and the stirring valve body is installed at the tail end of the nozzle valve body.

[0010] The nozzle valve body is provided with a first air pressure inlet, which is connected to multiple airflow channels of the nozzle core. The multiple airflow channels are connected to the air jet port of the nozzle body. The head of the nozzle core has a discharge head, which is located inside the air jet port, and there is a gap between the outer wall of the discharge head and the inner wall of the air jet port.

[0011] Furthermore, the nozzle body is provided with a number of air jet holes, which are connected to the inner cavity of the nozzle body, and the inner cavity is connected to a number of airflow channels.

[0012] Furthermore, the nozzle core has a discharge channel that communicates with the discharge port of the stirring valve body, and the discharge channel passes through the discharge head.

[0013] Furthermore, the nozzle valve body is also provided with a second air pressure inlet, which is connected to a pair of first airflow channels of the nozzle body.

[0014] Furthermore, the outlet of the first airflow channel is provided with an inclined jet angle adjustment hole, which faces the jet notch at the head of the nozzle body.

[0015] Furthermore, several jet holes are distributed around the outer periphery of the jet nozzle.

[0016] Furthermore, it also includes a connecting valve body, which is connected to the stirring valve body.

[0017] Furthermore, the connecting valve body includes a small polygonal valve body and a large polygonal valve body, wherein the small polygonal valve body is connected between the stirring valve body and the large polygonal valve body.

[0018] Furthermore, the elastomer material enters from the discharge port and exits from the discharge channel.

[0019] As can be seen from the above technical solution, the advantages of this utility model are:

[0020] 1. High-pressure atomization can turn liquid elastomer materials into fine particles and spray them evenly into the mold cavity, completely expelling air, eliminating air bubbles on the sides of the molded product, improving surface smoothness and performance stability, and better meeting the processing needs of complex structure products with sharp edges on the sides.

[0021] 2. By setting an air jet angle adjustment hole, the spray range or spray angle can be adjusted by applying pressure to the elastomer material spray from the side. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0023] Figure 1 This is a perspective view of this application.

[0024] Figure 2 This is an exploded view of this application.

[0025] Figure 3 This is a front view of this application.

[0026] Figure 4 for Figure 3CC section view.

[0027] Figure 5 for Figure 4 A magnified view of part A.

[0028] Figure 6 This is a schematic diagram of the nozzle core structure of this application.

[0029] Figure 7 This is a schematic diagram of the nozzle core and nozzle body of this application.

[0030] Figure 8 for Figure 7 BB cross-sectional view.

[0031] Explanation of reference numerals in the attached drawings: 1- Nozzle body; 101- Inner cavity; 102- Air jet port; 103- First airflow channel; 104- Air jet angle adjustment hole; 105- Jet notch; 106- Air jet hole; 11- Upper module assembly; 111- First locking protrusion; 12- Lower module assembly; 121- Second locking protrusion; 2- Nozzle inner core; 201- Discharge channel; 202- Airflow channel; 203- Discharge head; 4- Nozzle valve body; 401- First air pressure inlet; 402- Second air pressure inlet; 403- Second airflow channel; 404- Third airflow channel; 405- Connecting ring channel; 406- Through hole; 6- Stirring valve body; 601- Discharge port; 7- Small polygonal valve body; 8- Large polygonal valve body; 9- Stirring shaft; 10- Stirring electric spindle. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following description is provided in conjunction with the embodiments and accompanying drawings. Figures 1 to 8 This application will be further described in detail below. It should be emphasized that the illustrative embodiments and descriptions of this application are only used to explain the technical solutions and do not constitute a limitation on the scope of protection.

[0033] refer to Figures 1 to 8 ,like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, this embodiment provides a novel elastomer spraying head, whose core components include a nozzle, a nozzle valve body 4, a stirring valve body 6, and a connecting valve body. The nozzle includes a nozzle body 1 and a nozzle core 2 installed inside the nozzle body 1. The connecting valve body includes a small polygonal valve body 7 and a large polygonal valve body 8. The nozzle valve body 4 is installed at the tail of the nozzle body 1 and is threadedly connected to the stirring valve body 6. The stirring valve body 6, the small polygonal valve body 7, and the large polygonal valve body 8 are sequentially installed together from the tail of the nozzle valve body 4. A first air pressure inlet 401 is provided on one side of the nozzle valve body 4. The first air pressure inlet 401 is connected to a second airflow channel 403 extending vertically along the nozzle valve body 4. The second airflow channel 403 extends to communicate with the inner cavity 101 opened inside the nozzle body 1. The middle part of the nozzle core 2 is located inside the inner cavity 101, and several airflow channels 202 are evenly distributed in a ring on the nozzle core 2. Both ends of the airflow channels 202 are connected to the inner cavity 101. At the head of the nozzle body 1, a jet nozzle 102 is opened, which communicates with the inner cavity 101. The head of the nozzle core 2 has a discharge head 203, which is located inside the jet nozzle 102 and extends outward along the axial direction for a certain distance. There is a gap between the outer wall of the discharge head 203 and the inner wall of the jet nozzle 102. Therefore, after air pressure is injected from the first air pressure inlet 401, it can enter the inner cavity 101 through the second airflow channel 403 and then be ejected through the gap.

[0034] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the nozzle core 2 has a discharge channel 201 extending through both ends. The discharge channel 201 passes through the discharge head 203, and the tail end of the discharge channel 201 connects to a through hole 406 in the middle of the nozzle valve body 4. The through hole 406 connects to a discharge port 601 in the middle of the stirring valve body 6, allowing the elastomer material to enter through the discharge port 601, flow along the through hole 406 to the discharge channel 201, and finally be ejected from the discharge head 203 through the discharge channel 201. Because air pressure is applied to the outer periphery of the discharge head 203, when the gas is ejected, the elastomer material ejected from the discharge head 203 is instantly atomized by the air pressure. The atomized elastomer material can then fully contact the inner wall of the mold cavity, resulting in a more distinct edge shape after product molding and preventing the formation of air bubbles. This improves the product's appearance quality and better meets the molding requirements of complex products with sharp edges on the sides.

[0035] To improve the atomization effect after spraying, several air jet holes 106 are provided at the head of the nozzle body 1. The air jet holes 106 are distributed around the outer periphery of the air jet 102. The air pressure entering the inner cavity 101 can also be sprayed out through the air jet holes 106. The air pressure sprayed out through the air jet holes 106 can also act on the already sprayed elastomer material, thereby improving the atomization effect of the elastomer material.

[0036] In addition, in order to adjust the spray angle of the nozzle, a second air pressure inlet 402 is provided on the other side of the nozzle valve body 4. The second air pressure inlet 402 is connected to the third airflow channel 404 extending vertically along the nozzle valve body 4. The head of the nozzle valve body 4 is provided with a horizontally open annular connecting channel 405. The connecting channel 405 is used to connect the two first airflow channels 103 that are inclined on the nozzle body 1. The nozzle body 1 is also provided with a jet angle adjustment hole 104 that is inclined from the first airflow channel 103 towards the center. The head of the nozzle body 1 has a spray notch 105. The two jet angle adjustment holes 104 are located on both sides of the spray notch 105 and face the spray notch 105. Therefore, after the air pressure is injected from the second air pressure inlet 402, it can enter a pair of airflow channels 103 through the third airflow channel 404 and the connecting ring channel 405, and finally be ejected through a pair of jet angle adjustment holes 104. Since the elastomer material is ejected from the outlet head 203 of the nozzle core 2, the spray range is within the spray notch 105, and the spray angle adjustment hole 104 is located on the side of the spray notch 105, when the air pressure is ejected from the spray angle adjustment hole 104, the spray range or spray angle can be adjusted by applying pressure to the elastomer material spray from the side. Therefore, the atomized material sprayed in this application can closely adhere to the mold cavity sidewalls and corners, expel air, and achieve bubble-free filling and clear contour forming.

[0037] Preferably, in order to prevent backflow of materials, a sealing structure is provided in the overall structure. Specifically, sealing rings are provided between the nozzle inner core 2 and the nozzle body 1, between the nozzle valve body 4 and the stirring valve body 6, between the stirring valve body 6 and the small polygonal valve body 7, and between the small polygonal valve body 7 and the large polygonal valve body 8, thereby forming a good seal.

[0038] like Figure 8 As shown, to facilitate the installation of the nozzle inner core 2, the nozzle body 1 is configured as a separable upper module assembly 11 and a lower module assembly 12. The upper module assembly 11 is provided with a first locking protrusion 111, and the lower module assembly 12 is provided with a second locking protrusion 121. The first locking protrusion 111 and the second locking protrusion 121 engage with each other, enabling quick installation of the nozzle body 1. During installation, the nozzle inner core 2 is first threaded into the upper module assembly 11, and then the upper module assembly 11 and the lower module assembly 12 are engaged together. At this point, the nozzle assembly is complete. After that, the nozzle valve body 4, the stirring valve body 6, the small polygonal valve body 7, and the large polygonal valve body 8 are installed.

[0039] This application requires external equipment (an electric stirring spindle) for operation. A transmission device (an stirring shaft connected to the electric stirring spindle) moves the application within a space. During spraying, the spray head atomizes the liquid elastomer material under high pressure, turning it into fine particles that are then evenly sprayed into the mold cavity. This spraying method ensures a consistent coating thickness, resulting in a smoother surface and better performance after product molding. This improves the product's appearance quality and meets the processing requirements of complex products.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to the embodiments of this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A novel elastomeric spray head for injecting material into a mold cavity, characterized in that, include: The nozzle includes a nozzle body (1) and a nozzle core (2), wherein the nozzle core (2) is installed inside the nozzle body (1); Nozzle valve body (4) and stirring valve body (6), wherein the nozzle valve body (4) is installed at the tail of the nozzle body (1) and the stirring valve body (6) is installed at the tail of the nozzle valve body (4); The nozzle valve body (4) is provided with a first air pressure inlet (401), which is connected to a plurality of airflow channels (202) of the nozzle inner core (2), and the plurality of airflow channels (202) are connected to the jet outlet (102) of the nozzle body (1). The nozzle core (2) has a discharge head (203) at its head. The discharge head (203) is located inside the air jet (102), and there is a gap between the outer wall of the discharge head (203) and the inner wall of the air jet (102).

2. The novel elastomer spraying head according to claim 1, characterized in that, The nozzle body (1) is also provided with a number of air jet holes (106), which are connected to the inner cavity (101) of the nozzle body (1), and the inner cavity (101) is connected to a number of airflow channels (202).

3. The novel elastomeric spray tip according to claim 1, wherein, The nozzle core (2) has a discharge channel (201) that communicates with the discharge port (601) of the stirring valve body (6), and the discharge channel (201) passes through the discharge head (203).

4. The novel elastomeric spray tip according to claim 1, wherein, The nozzle valve body (4) is also provided with a second air pressure inlet (402), which is connected to a pair of first airflow channels (103) of the nozzle body (1).

5. The novel elastomeric spray tip according to claim 4, wherein, The outlet of the first airflow channel (103) is provided with an inclined jet angle adjustment hole (104), which faces the jet notch (105) at the head of the nozzle body (1).

6. The novel elastomeric spray tip according to claim 5, wherein, Several jet holes (106) are distributed around the outer periphery of the jet nozzle (102).

7. The novel elastomeric spray tip according to claim 1, wherein, It also includes a connecting valve body, which is connected to the stirring valve body (6).

8. The novel elastomeric spray tip according to claim 7, wherein, The connecting valve body includes a small polygonal valve body (7) and a large polygonal valve body (8), wherein the small polygonal valve body (7) is connected between the stirring valve body (6) and the large polygonal valve body (8).

9. The novel elastomeric spray tip according to claim 3, wherein, The elastomer material enters from the outlet (601) and exits from the outlet channel (201).

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