Massage chair motor shell integrated injection mold

Abstract

The utility model discloses a massage chair motor shell integration injection mold, include: front template, its inside is provided with front die core, back mould mechanism, it includes back template, back die core and ejector pin plate, and back die core and front die core are spliced and form injection molding cavity, and the inside metal support casing is sleeved on back die core, and back die core is provided with main runner, and branch runner one end is communicated to main runner, and the other end extends to back die core top surface, and back template is provided with airflow channel, and airflow channel is communicated to main runner, and a plurality of ejector pins are provided on ejector pin plate, and the ejector pin is arranged in back template, back die core. Compared with prior art, the utility model solves the problem of insufficient anti-deformation ability of the motor shell formed by simple injection molding.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to an integrated injection mold for a massage chair motor housing. Background Technology

[0002] A full-body massage chair is a device that automatically massages multiple parts of the body using mechanical methods that simulate human touch. Inside the massage chair, a motor drives the movement of a robotic arm, and the motor is fixedly mounted inside the chair's outer shell via a motor housing.

[0003] Massage chairs have irregularly shaped shells and limited internal space. In order to ensure that the motor housing can be stably fixed inside the massage chair shell, the motor housing is usually an injection-molded plastic part. This ensures that the shape fits the massage chair shell, resulting in insufficient resistance to deformation of the motor housing. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated injection mold for the motor housing of a massage chair, so as to solve the problem of insufficient deformation resistance of the motor housing formed by simple injection molding.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an integrated injection mold for a massage chair motor housing, comprising:

[0006] The front template has a front mold core inside it;

[0007] The rear mold mechanism includes a rear mold plate, a rear mold core, and an ejector plate. The rear mold core and the front mold core are assembled to form an injection cavity. An inner metal support shell is fitted onto the rear mold core. A main flow channel is provided inside the rear mold core. One end of a branch flow channel is connected to the main flow channel, and the other end extends to the top surface of the rear mold core. An airflow channel is provided inside the rear mold plate, which is connected to the main flow channel. Several ejector pins are provided on the ejector plate, and the ejector pins pass through the rear mold plate and the rear mold core.

[0008] As a further description of the above technical solution:

[0009] The rear mold core is equipped with four branch flow channels arranged circumferentially along the main flow channel.

[0010] As a further description of the above technical solution:

[0011] The ejector pins and branch channels are arranged at intervals.

[0012] As a further description of the above technical solution:

[0013] The rear template is equipped with a connector pipe that extends into the main channel.

[0014] As a further description of the above technical solution:

[0015] The main channel is equipped with a plug section at the end, and the connector tube extends into the plug section. A rubber sealing ring is provided between the end face of the connector tube and the bottom surface of the plug section.

[0016] As a further description of the above technical solution:

[0017] The outer side of the connector tube is provided with several parallel first annular ribs, and the inner wall of the insertion section is provided with several parallel second annular ribs, the positions of the second annular ribs corresponding to the first annular ribs.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. In this utility model, the inner metal support shell is fitted onto the rear mold core in the integrated injection mold. After the front mold core and the rear mold core are closed, the plastic is injected into the injection cavity and covers the outer side of the inner metal support shell, realizing the integrated molding of the inner metal layer and the outer plastic layer. This makes the motor shell both resistant to deformation and fits the massage chair shell in shape. The motor shell is installed stably, solving the problem of insufficient resistance to deformation of motor shells formed by simple injection molding.

[0020] 2. In this utility model, in order to prevent the inner metal support shell from changing position on the rear mold core, in addition to the insertion of the inner metal support shell through contour positioning, the rear template is connected to a negative pressure generating device. Vacuum is drawn through the airflow channel of the rear template and the main channel of the rear mold core, so that negative pressure suction is generated at the end of the branch channel to position the inner metal support shell. The vacuum adsorption is released when the product is demolded after injection molding, which facilitates the ejector pin ejection of the ejector plate. Attached Figure Description

[0021] 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 on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of an integrated injection mold for a massage chair motor housing. Figure 1 .

[0023] Figure 2 A schematic diagram of the structure of an integrated injection mold for a massage chair motor housing. Figure 2 .

[0024] Figure 3 This is a schematic diagram of the rear mold mechanism in an integrated injection mold for a massage chair motor housing.

[0025] Figure 4 for Figure 3A magnified view of a portion of point A in the middle.

[0026] Legend:

[0027] 1. Front mold plate; 2. Rear mold mechanism; 21. Rear mold plate; 211. Airflow channel; 212. Connector pipe; 2121. First annular rib; 22. Rear mold core; 221. Main runner; 2211. Second annular rib; 222. Branch runner; 23. Ejector plate; 231. Ejector pin; 3. Rubber sealing ring; 9. Inner metal support shell. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1-4 This utility model provides a technical solution: an integrated injection mold for a massage chair motor housing, comprising:

[0031] Front template 1, which has a front mold core inside;

[0032] The rear mold mechanism 2 includes a rear mold plate 21, a rear mold core 22, and an ejector plate 23. The rear mold core 22 is assembled with the front mold core to form an injection cavity. An inner metal support shell 9 is fitted on the rear mold core 22. A main flow channel 221 is provided inside the rear mold core 22. One end of the branch flow channel 222 is connected to the main flow channel 221, and the other end extends to the top surface of the rear mold core 22. An airflow channel 211 is provided inside the rear mold plate 21, and the airflow channel 211 is connected to the main flow channel 221. Several ejector pins 231 are provided on the ejector plate 23, and the ejector pins 231 pass through the rear mold plate 21 and the rear mold core 22.

[0033] Working principle: Within the integrated injection mold, the inner metal support shell 9 is fitted onto the rear mold core 22. After the front and rear mold cores 22 are closed, plastic is injected into the injection cavity and covers the outer side of the inner metal support shell 9, achieving integrated molding of the metal inner layer and the plastic outer layer. This gives the motor shell both deformation resistance and a shape that fits the massage chair shell, ensuring stable installation and solving the problem of insufficient deformation resistance in purely injection-molded motor shells. To improve the bonding quality between the inner metal support shell 9 and the plastic, the outer side of the inner metal support shell 9 is not only polished but also has through holes machined on the protrusions to allow molten plastic to flow in, achieving locking between the plastic outer layer and the protrusions.

[0034] To prevent the inner metal support shell 9 from changing position on the rear mold core 22, in addition to the insertion of the inner metal support shell 9 through contour positioning, the rear template 21 is connected to a negative pressure generating device. Vacuum is drawn through the airflow channel 211 of the rear template 21 and the main flow channel 221 of the rear mold core 22, so that negative pressure suction is generated at the end of the branch flow channel 222 to position the inner metal support shell 9. The vacuum suction is released when the product is demolded after injection molding, so that the ejector pins 231 of the ejector plate 23 can eject the material.

[0035] Example 2

[0036] Based on the above embodiments, this embodiment further improves upon the following technical solution: four branch flow channels 222 are arranged circumferentially along the main flow channel 221 inside the rear mold core 22, and the ejector pins 231 and the branch flow channels 222 are arranged at intervals, which effectively ensures the vacuum suction of the branch flow channels 222 on the inner metal support shell 9 on the rear mold core 22 while avoiding affecting the ejection of the ejector pins 231. Furthermore, since the ejector pins 231 are evenly distributed, the ejection effect is good.

[0037] Example 3

[0038] This embodiment further improves upon the above embodiment by providing the following technical solution: A connector pipe 212 is provided on the rear template 21, extending into the main channel 221. An insertion section is provided at the end of the main channel 221, and the connector pipe 212 extends into the insertion section. A rubber sealing ring 3 is provided between the end face of the connector pipe 212 and the bottom surface of the insertion section, effectively ensuring the sealing performance when the airflow channel 211 in the rear template 21 is connected to the main channel 221 in the rear mold core 22.

[0039] Example 4

[0040] Based on the above embodiments, this embodiment further improves upon the following technical solution: a plurality of parallel first annular ribs 2121 are provided on the outer side of the connector tube 212, and a plurality of parallel second annular ribs 2211 are provided on the inner wall of the insertion section, the positions of the second annular ribs 2211 corresponding to the first annular ribs 2121.

[0041] When the rear mold core 22 is inserted and fixed to the connector tube 212, the misalignment and interlocking of the first annular rib 2121 and the second annular rib 2211 can further improve the sealing performance.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated injection mold for a massage chair motor housing, characterized in that, include: The front template has a front mold core inside it; The rear mold mechanism includes a rear mold plate, a rear mold core, and an ejector plate. The rear mold core and the front mold core are assembled to form an injection cavity. An inner metal support shell is fitted onto the rear mold core. A main flow channel is provided inside the rear mold core. One end of a branch flow channel is connected to the main flow channel, and the other end extends to the top surface of the rear mold core. An airflow channel is provided inside the rear mold plate and is connected to the main flow channel. A plurality of ejector pins are provided on the ejector plate and the ejector pins pass through the rear mold plate and the rear mold core.

2. The integrated injection mold for a massage chair motor housing according to claim 1, characterized in that, The rear mold core is provided with four branch channels arranged circumferentially along the main channel.

3. The integrated injection mold for a massage chair motor housing according to claim 2, characterized in that, The ejector pin and the branch flow channel are arranged at intervals.

4. The integrated injection mold for a massage chair motor housing according to claim 1, characterized in that, The rear template is provided with a connector tube, which extends into the main channel.

5. The integrated injection mold for a massage chair motor housing according to claim 4, characterized in that, The main channel end is provided with a plug section, the connector tube extends into the plug section, and a rubber sealing ring is provided between the end face of the connector tube and the bottom surface of the plug section.

6. The integrated injection mold for a massage chair motor housing according to claim 5, characterized in that, The outer side of the connector tube is provided with several parallel first annular ribs, and the inner wall of the insertion section is provided with several parallel second annular ribs, the positions of the second annular ribs corresponding to the first annular ribs.

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