Bend injection molding opening structure with high thermal insulation performance

Abstract

The high-heat-preservation-performance bend injection molding opening structure comprises an injection molding base and an injection molding nozzle fixed to the injection molding base, a Z-shaped material channel is formed in the injection molding base and comprises a first section, a second section and a third section, and the ends of the first section, the second section and the third section are sequentially connected in a right-angle mode. The first section and the third section extend away from the second section in the direction away from each other, the other end of the first section is connected with an injection molding nozzle, and a feeding port communicated with an inner cavity of the first section is formed in the injection molding nozzle. U-shaped electric heating tubes are arranged on the side, provided with the injection molding nozzle, of the injection molding seat and the side, deviating from the injection molding nozzle, of the injection molding seat, and the projection of the second section on the side, provided with the injection molding nozzle, of the injection molding seat is located in the middle of the electric heating tubes. The electric heating pipes are arranged on the two sides of the injection molding base, the whole material channel is arranged in the middle of the two sets of electric heating pipes, heating is even, and materials in the material channel arranged in a curve mode are well prevented from being cooled.

Description

Technical Field

[0001] The present application relates to the field of injection molds, and in particular to a curved injection port structure with high thermal insulation performance. Background Art

[0002] During injection molding, material is injected into the mold's feed port. After entering the mold cavity, the water-cooling structure within the mold cools the material, forming the product. After the mold is opened and ejected, the product is formed. During product cooling, mold opening, and demolding, the injection port stops injecting material. Larger products take longer to cool, causing the material at the injection port to cool more easily. This can lead to poor product fluidity during subsequent injection molding, cavities in the mold cavity, and surface markings and lines, affecting both appearance and strength. Summary of the Invention

[0003] In order to ensure the quality of products produced by injection molding, the present application provides a high thermal insulation performance curved injection molding port structure.

[0004] This application provides a high thermal insulation performance curved injection molding structure, which adopts the following technical solutions:

[0005] A high-heat-insulating curved injection molding port structure comprises an injection molding seat and an injection molding nozzle fixed to the injection molding seat. The injection molding seat is provided with a Z-shaped material channel, the material channel comprising a first section, a second section, and a third section whose ends are connected in sequence at right angles. The first section and the third section extend away from the second section in directions away from each other. The other end of the first section is connected to the injection molding nozzle. The injection molding nozzle is provided with a material inlet communicating with the inner cavity of the first section.

[0006] The side of the injection molding seat where the injection nozzle is provided and the side away from the injection molding nozzle are both provided with electric heating pipes. The electric heating pipe is U-shaped, and the projection of the second section on the side of the injection molding seat where the injection nozzle is provided is located in the middle of the electric heating pipe.

[0007] By adopting the above technical solution, electric heating tubes are arranged on both sides of the injection molding seat, and the entire material channel is arranged in the middle position of the two groups of electric heating tubes, so that the heating is uniform and the material in the material channel is better prevented from cooling, thereby achieving a good thermal insulation effect. When the time interval between two injection moldings is long, the material still maintains good fluidity, so that the product has a complete appearance, uniform structure and good strength after molding.

[0008] Optionally, the outlet of the third section away from the second section is located inside the electric heating tube, and the two ends of the electric heating tube are located on the side of the second section away from the third section.

[0009] By adopting the above technical solution, the electric heating tube is better surrounded around the third section, making the material in the third section less likely to cool down, improving the insulation effect, and thus achieving a good overall heating effect for the material channel set in the entire bend.

[0010] Optionally, the injection molding seat is provided with an embedding groove for embedding the heat pipe.

[0011] By adopting the above technical solution, the installation of the electric heating pipe is facilitated, and the distance between the electric heating pipe and the material channel is shortened, so that the heating speed is fast and the heating effect is good.

[0012] Optionally, an upper electric heating ring sleeve is sleeved on the outer wall of the injection nozzle.

[0013] By adopting the above technical solution, the material in the injection nozzle is not easily cooled.

[0014] Optionally, an abutment ring is provided around the injection nozzle, the outer diameter of the abutment ring is larger than the outer diameter of the injection nozzle, and the electric heating ring sleeve is located between the abutment ring and the injection seat.

[0015] By adopting the above technical solution, when the injection nozzle is installed, the outer layer of the mold is pressed against the abutment ring, thereby protecting the electric heating ring sleeve and making the electric heating ring less likely to be damaged.

[0016] Optionally, a snap ring groove is provided in the circumference of the injection nozzle, and the abutting ring is a snap ring with a notch at one end, and the snap ring is snapped into the snap ring groove.

[0017] By adopting the above technical solution, the clamping ring has a certain elastic force, and is convenient to be installed on the injection nozzle after expanding from the notch position, and the clamping ring groove also facilitates the positioning of the clamping ring.

[0018] Optionally, a connector is abutted on the injection molding seat, a through opening for communication with the third section of the inner cavity is opened in the connector, a sealing ring groove is provided circumferentially at the connection between the injection molding seat and the connector, and the snap-on ring groove is for installing a sealing ring.

[0019] By adopting the above technical solution, the sealing effect is improved and the material is not likely to leak.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. Electric heating pipes are set on both sides of the injection molding seat, and the entire material channel is set in the middle position of the two sets of electric heating pipes to heat the residual material evenly. After molding, the product has a complete appearance, uniform structure and good strength;

[0022] 2. The outlet of the third section away from the second section is located inside the electric heating pipe, and the two ends of the electric heating pipe are located on the side of the second section away from the third section, so that the electric heating pipe is better surrounded by the third section, making it difficult for the material in the third section to cool down, thereby improving the insulation effect;

[0023] 3. The abutting ring is supported on the electric heating ring sleeve to protect the electric heating ring sleeve and prevent the electric heating ring sleeve from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the embodiment.

[0025] Figure 2 It is a cross-sectional view of an embodiment.

[0026] Explanation of the accompanying reference numerals: 1. Injection molding seat; 11. Material channel; 111. First section; 112. Second section; 113. Third section; 2. Injection molding nozzle; 21. Feed inlet; 3. Electric heating tube; 31. Embedded groove; 4. Electric heating ring sleeve; 5. Abutment ring; 51. Snap ring groove; 6. Connecting piece; 7. Sealing ring groove. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] The embodiment of the present application discloses a high thermal insulation performance curved injection molding structure. Figure 1 and Figure 2 The high thermal insulation performance curved injection molding port structure includes an injection molding seat 1 and an injection molding nozzle 2 fixed on the injection molding seat 1. A Z-shaped material channel 11 is provided in the injection molding seat 1. The material channel 11 includes a first section 111, a second section 112 and a third section 113 whose ends are connected in sequence at right angles. The first section 111 and the third section 113 extend away from the second section 112 in directions away from each other. The other end of the first section 111 is connected to the injection molding nozzle 2. The injection molding nozzle 2 is provided with a feed port 21 that is connected to the inner cavity of the first section 111. The injection molding machine injects the material from the feed port 21.

[0029] The injection molding base 1 is provided with electric heating pipes 3 on both the side where the injection nozzle 2 is mounted and the side facing away from the injection nozzle 2. Slots 31 for the electric heating pipes 3 are provided on both sides of the injection molding base 1. The electric heating pipes 3 are embedded in these slots 31. The two sets of electric heating pipes 3 are parallel and U-shaped. The projection of the second section 112 on the side where the injection nozzle 2 is mounted is located in the middle of the electric heating pipes 3. The second section 112 is positioned between the two electric heating pipes 3, ensuring uniform heating and effective insulation of the material within the second section 112.

[0030] The third section 113 is located inside the electric heating tube 3 away from the outlet of the second section 112, and the two ends of the electric heating tube 3 are located on the side of the second section 112 away from the third section 113, so that the electric heating tube 3 is better surrounded by the circumference of the third section 113, so that the heating effect of the electric heating tube 3 is good.

[0031] The outer wall of the injection nozzle 2 is sleeved with an upper electric heating ring 4. An abutment ring 5 is circumferentially mounted on the injection nozzle 2. The outer diameter of the abutment ring 5 is larger than that of the injection nozzle 2. The electric heating ring 4 is located between the abutment ring 5 and the injection molding seat 1. A snap ring groove 51 is defined circumferentially within the injection nozzle 2. The abutment ring 5 is a snap ring with a notch at one end, which snaps into the snap ring groove 51. After the snap ring expands from the notch, it snaps onto the injection nozzle 2, facilitating its installation.

[0032] Injection molding seat 1 is abutted with connector 6, which has a port formed therein for communication with the inner cavity of third section 113. A sealing ring groove 7 is circumferentially defined at the junction of injection molding seat 1 and connector 6, and a snap ring groove 51 is provided for mounting a sealing ring. During installation, connector 6 is connected to the inlet of the mold cavity, and the sealing ring improves sealing, preventing leakage.

[0033] The implementation principle of a high thermal insulation performance curved injection molding port structure in an embodiment of the present application is as follows: electric heating tubes 3 are arranged on both sides of the injection molding seat 1, and the entire material channel 11 is arranged in the middle position of the two groups of electric heating tubes 3, so that the heating is uniform and the material in the curved material channel 11 is better prevented from cooling, thereby achieving a good thermal insulation effect. When the time interval between two injection moldings is long, the material still maintains good fluidity, so that the product has a complete appearance, uniform structure, and good strength after molding.

[0034] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high-heat-insulating curved injection molding port structure, comprising an injection molding seat (1) and an injection molding nozzle (2) fixed on the injection molding seat (1), characterized in that: A Z-shaped material channel (11) is provided in the injection molding seat (1), and the material channel (11) includes a first section (111), a second section (112), and a third section (113) whose ends are connected in sequence at right angles, the first section (111) and the third section (113) extend away from the second section (112) in directions away from each other, the other end of the first section (111) is connected to the injection molding nozzle (2), and the injection molding nozzle (2) is provided with a material inlet (21) that is in communication with the inner cavity of the first section (111); The side of the injection molding seat (1) on which the injection molding nozzle (2) is provided and the side facing away from the injection molding nozzle (2) are both provided with electric heating tubes (3); the electric heating tubes (3) are U-shaped; the projection of the second section (112) on the side of the injection molding seat (1) on which the injection molding nozzle (2) is provided is located in the middle of the electric heating tube (3).

2. The high thermal insulation performance curved injection molding structure according to claim 1, characterized in that: The outlet of the third section (113) away from the second section (112) is located inside the electric heating tube (3), and the two ends of the electric heating tube (3) are located on the side of the second section (112) away from the third section (113).

3. The high thermal insulation performance curved injection molding structure according to claim 2, characterized in that: The injection molding seat (1) is provided with an embedding groove (31) for embedding the electric heat pipe (3).

4. The high thermal insulation performance curved injection molding port structure according to claim 1, characterized in that: The outer wall of the injection nozzle (2) is sleeved with an upper electric heating ring sleeve (4).

5. The high thermal insulation performance curved injection molding structure according to claim 4, characterized in that: The injection nozzle (2) is circumferentially provided with an abutment ring (5), the outer diameter of the abutment ring (5) being larger than the outer diameter of the injection nozzle (2), and the electric heating ring sleeve (4) being located between the abutment ring (5) and the injection seat (1).

6. The high thermal insulation performance curved injection molding structure according to claim 5, characterized in that: The injection nozzle (2) is provided with a snap ring groove (51) in the circumferential direction, and the abutting ring (5) is a snap ring with a notch at one end, and the snap ring is snapped into the snap ring groove (51).

7. The high thermal insulation performance curved injection molding port structure according to claim 6, characterized in that: The injection molding seat (1) is in contact with a connecting piece (6), and a through opening for communicating with the inner cavity of the third section (113) is provided in the connecting piece (6). A sealing ring groove (7) is provided circumferentially at the connection between the injection molding seat (1) and the connecting piece (6), and the snap ring groove (51) is provided for installing a sealing ring.

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