A resin injection molding machine

Abstract

The application discloses a resin injection molding machine, comprising: a base provided with a conveying channel, the conveying channel being provided with a preheating chamber and an injection chamber; a conveying part arranged in the conveying channel and used for conveying a jig along the conveying channel; a preheating part arranged in the preheating chamber, the preheating part comprising a first preheating cover, a second preheating cover and a hot air generator, the first preheating cover and the second preheating cover being open towards the jig, and the hot air generator being connected with the first preheating cover and the second preheating cover respectively; and an injection part arranged in the injection chamber, the injection part comprising a feeding mechanism, an injection mechanism and a vacuum defoaming mechanism, the injection mechanism comprising a first injection assembly and a second injection assembly, the feeding mechanism being connected with the first injection assembly and the second injection assembly respectively, the first injection assembly being used for quantitatively injecting resin into the jig, the second injection assembly being used for supplementally injecting resin into the jig, and the vacuum defoaming mechanism being arranged between the first injection assembly and the second injection assembly.

Description

Technical Field

[0001] This application relates to the field of resin processing and production technology, and in particular to a resin injection molding machine. Background Technology

[0002] A capacitor is a circuit element that stores electrical charge. In the production of capacitors for new energy vehicles, epoxy resin is the most widely used as the main encapsulating material. However, existing injection molding machines have insufficient production capacity and are prone to problems such as overflow, air bubbles, and insufficient resin, which seriously affect product quality. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a resin injection molding machine that not only shortens preheating time and improves working efficiency, but also reduces residual air bubbles during the injection process, avoiding excessive or insufficient resin injection, thereby improving product quality.

[0004] The resin injection molding machine according to an embodiment of this application includes: a machine base with a conveying channel, the conveying channel having a preheating chamber and an injection chamber; a conveying section disposed in the conveying channel for conveying a fixture along the conveying channel; a preheating section disposed in the preheating chamber, the preheating section including a first preheating hood, a second preheating hood, and a hot air generator, the openings of the first preheating hood and the second preheating hood facing the fixture, the hot air generator being connected to the first preheating hood and the second preheating hood respectively via pipes; and an injection section disposed in the injection chamber, the injection section including a feeding mechanism, an injection mechanism, and a vacuum defoaming mechanism, the injection mechanism including a first injection assembly and a second injection assembly, the feeding mechanism being connected to the first injection assembly and the second injection assembly respectively, the first injection assembly being used to quantitatively inject resin into the fixture, the second injection assembly being used to replenish resin into the fixture, and the vacuum defoaming mechanism being disposed between the first injection assembly and the second injection assembly for defoaming the resin in the fixture.

[0005] The resin injection molding machine according to the embodiments of this application has at least the following beneficial effects: by using the first preheating hood and the second preheating hood for preheating simultaneously, the preheating time can be shortened and the working efficiency improved; by using the first injection molding component to quantitatively inject resin into the fixture, and then using the second injection molding component to replenish the resin into the fixture, not only can the residual air bubbles be reduced during the injection process, but also the situation of excessive or insufficient resin injection can be avoided, thus ensuring product quality; by providing a vacuum defoaming mechanism between the first injection molding component and the second injection molding component, the resin on the fixture can be defoamed, further improving product quality.

[0006] According to the resin injection molding machine described in the embodiments of this application, the feeding mechanism includes a main agent tank, a hardener tank, and a mixing tank. The mixing tank is connected to the main agent tank and the hardener tank respectively, and the first injection molding assembly and the second injection molding assembly are connected to the mixing tank respectively.

[0007] According to the resin injection molding machine described in the embodiments of this application, a stirring mechanism is provided in the mixing tank. The stirring mechanism includes a stirring shaft, stirring blades and a stirring motor. The stirring shaft is rotatably disposed in the mixing tank, the stirring blades are disposed on the stirring shaft, and the stirring motor is connected to the stirring shaft.

[0008] According to the resin injection molding machine described in the embodiments of this application, the injection mechanism further includes a liquid level detection unit, which is used to detect the liquid level of the fixture, and the liquid level detection unit is connected to the first injection assembly and the second injection assembly respectively.

[0009] According to the resin injection molding machine described in the embodiments of this application, both the first injection molding assembly and the second injection molding assembly include a metering pump and an injection head, the metering pump is connected to the mixing tank, and the injection head is connected to the metering pump.

[0010] According to the resin injection molding machine described in the embodiments of this application, the first injection molding component has multiple injection heads, and the second injection molding component has one injection head.

[0011] According to the resin injection molding machine described in the embodiments of this application, the first injection molding assembly and the second injection molding assembly further include a moving unit. The moving unit includes a first transverse moving module, a second transverse moving module, and a vertical moving module. The transverse moving direction of the first transverse moving module is perpendicular to the conveying direction of the conveying part. The second transverse moving module is disposed on the first transverse moving module, and the transverse moving direction of the second transverse moving module is consistent with the conveying direction of the conveying part. The vertical moving module is disposed on the second transverse moving module, and the injection head is disposed on the vertical moving module.

[0012] According to the resin injection molding machine described in the embodiments of this application, the vacuum defoaming mechanism includes a vacuum cover and a vacuum generator. The vacuum cover is disposed above the conveying channel and is used to cover the fixture. The vacuum cover is provided with a joint, and the vacuum generator is connected to the joint.

[0013] According to the resin injection molding machine described in the embodiments of this application, the injection section further includes a lifting mechanism, which is disposed below the conveying channel and is used to drive the fixture to move closer to or away from the vacuum hood.

[0014] The resin injection molding machine according to the embodiments of this application further includes a loading section and a unloading section, wherein the loading section and the unloading section are respectively disposed at the inlet end and the outlet end of the conveying section, and the loading section and the unloading section are respectively used to load and unload the fixture.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a resin injection molding machine according to an embodiment of this application; Figure 2 This is a partial structural schematic diagram of a resin injection molding machine according to an embodiment of this application.

[0017] Figure label: Base 100; Conveying channel 110; Preheating chamber 120; Injection chamber 130; Conveying section 200; Preheating section 300; First preheating cover 310; Second preheating cover 320; Hot air generator 330; Feeding mechanism 410; Main agent tank 411; Hardener tank 412; Mixing tank 413; Vacuum defoaming mechanism 420; Vacuum cover 421; Vacuum generator 422; Connector 423; First injection assembly 431; Second injection assembly 432; Metering pump 433; Injection head 434; Moving unit 435; First transverse module 436; Second transverse module 437; Vertical module 438. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this application, unless otherwise expressly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this application based on the specific content of the technical solution. In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] Reference Figure 1 and Figure 2This application provides a resin injection molding machine, comprising: a base 100, provided with a conveying channel 110, the conveying channel 110 being provided with a preheating chamber 120 and an injection chamber 130; a conveying section 200, disposed in the conveying channel 110, the conveying section 200 being used to convey a fixture along the conveying channel 110; and a preheating section 300, disposed in the preheating chamber 120, the preheating section 300 including a first preheating shroud 310, a second preheating shroud 320 and a hot air generator 330, the openings of the first preheating shroud 310 and the second preheating shroud 320 facing the fixture, and the hot air generator 330 being connected to the first preheating shroud 310 and the second preheating shroud 320 respectively through pipes. A heat shield 320 is connected; a molding section is disposed in the molding chamber 130. The molding section includes a feeding mechanism 410, a molding mechanism, and a vacuum defoaming mechanism 420. The molding mechanism includes a first molding assembly 431 and a second molding assembly 432. The feeding mechanism 410 is connected to the first molding assembly 431 and the second molding assembly 432 respectively. The first molding assembly 431 is used to quantitatively inject resin into the fixture, and the second molding assembly 432 is used to replenish resin into the fixture. The vacuum defoaming mechanism 420 is disposed between the first molding assembly 431 and the second molding assembly 432 and is used to defoam the resin in the fixture.

[0023] By using the first preheating hood 310 and the second preheating hood 320 for simultaneous preheating, the preheating time can be shortened and the work efficiency improved. By using the first injection molding component 431 to quantitatively inject resin into the fixture, and then using the second injection molding component 432 to replenish the resin in the fixture, not only can the residual air bubbles be reduced during the injection process, but also the situation of too much or too little resin injection can be avoided, ensuring product quality. By setting a vacuum defoaming mechanism 420 between the first injection molding component 431 and the second injection molding component 432, the resin on the fixture can be defoamed, further improving product quality.

[0024] Reference Figure 1 The feeding mechanism 410 includes a main agent tank 411, a hardener tank 412, and a mixing tank 413. The mixing tank 413 is connected to the main agent tank 411 and the hardener tank 412, respectively. A first injection molding assembly 431 and a second injection molding assembly 432 are connected to the mixing tank 413. Furthermore, a stirring mechanism is provided inside the mixing tank 413. The stirring mechanism includes a stirring shaft, stirring blades, and a stirring motor. The stirring shaft is rotatably mounted inside the mixing tank 413, the stirring blades are mounted on the stirring shaft, and the stirring motor is connected to the stirring shaft. The stirring mechanism stirs the materials in the mixing tank 413, thereby ensuring uniform mixing of the main agent and hardener and improving product quality.

[0025] In this embodiment, the injection molding mechanism further includes a liquid level detection unit, which is used to detect the liquid level in the fixture. The liquid level detection unit is connected to the first injection molding assembly 431 and the second injection molding assembly 432, respectively. The liquid level detection unit is configured as a height sensor, which enables the detection of the resin level in the fixture, ensuring that the liquid level of each product is within a set range, thereby improving product quality.

[0026] Reference Figure 1 and Figure 2 It is conceivable that both the first injection molding assembly 431 and the second injection molding assembly 432 include a metering pump 433 and an injection head 434. The metering pump 433 is connected to the mixing tank 413, and the injection head 434 is connected to the metering pump 433. Furthermore, the first injection molding assembly 431 has multiple injection heads 434, while the second injection molding assembly 432 has only one. During the first resin injection, injecting resin into the fixture simultaneously through multiple injection heads 434 can shorten the injection time and improve work efficiency; while during the second replenishment injection, using only one injection head 434 can improve control precision and product quality.

[0027] Reference Figure 1 and Figure 2 It is easy to understand that the first injection molding assembly 431 and the second injection molding assembly 432 also include a moving unit 435. The moving unit 435 includes a first horizontal moving module 436, a second horizontal moving module 437, and a vertical moving module 438. The horizontal moving direction of the first horizontal moving module 436 is perpendicular to the conveying direction of the conveying unit 200. The second horizontal moving module 437 is disposed on the first horizontal moving module 436, and its horizontal moving direction is consistent with the conveying direction of the conveying unit 200. The vertical moving module 438 is disposed on the second horizontal moving module 437, and the injection head 434 is disposed on the vertical moving module 438. The moving unit 435 drives the injection head 434 to move, enabling the injection head 434 to move to any position of the fixture and inject resin, improving the stability and reliability of the operation. Among them, the first horizontal moving module 436 and the second horizontal moving module 437 use screws and nuts, which can improve the moving accuracy and improve product quality; the vertical moving module 438 uses a cylinder, which has a simple structure and stable operation.

[0028] Reference Figure 1The vacuum defoaming mechanism 420 includes a vacuum cover 421 and a vacuum generator 422. The vacuum cover 421 is positioned above the conveying channel 110 and is used to cover the fixture. The vacuum cover 421 is equipped with a connector 423, and the vacuum generator 422 is connected to the connector 423. During operation, the conveying unit 200 conveys the fixture along the conveying channel 110 to a position below the vacuum cover 421. At this time, the fixture is covered by the vacuum cover 421, and then the vacuum generator 422 operates, thereby eliminating air bubbles in the resin and improving product quality. Furthermore, the molding unit also includes a lifting mechanism, which is positioned below the conveying channel 110. The lifting mechanism is used to drive the fixture closer to or away from the vacuum cover 421. The lifting mechanism is a cylinder. When the fixture is conveyed to a position below the vacuum cover 421, the lifting mechanism drives the fixture to rise, causing the vacuum cover 421 to cover the fixture for defoaming.

[0029] It should be noted that the lifting mechanism can also be connected to the vacuum chamber 421, that is, the lifting mechanism drives the vacuum chamber 421 to descend in order to cover the fixture for defoaming. It should also be noted that the lifting mechanism can also adopt a screw and nut structure or a gear and rack structure, and this application does not limit it in this way.

[0030] In some embodiments of this application, the resin injection molding machine further includes a loading section and a unloading section, which are respectively located at the inlet and outlet ends of the conveying section 200. The loading and unloading sections are used for loading and unloading the fixture, respectively. By including the loading and unloading sections, automated operation can be achieved, reducing labor intensity and improving work efficiency. Both the loading and unloading sections are configured with robotic arms, resulting in a simple structure and easy operation.

[0031] The working process of the resin injection molding machine is as follows: the loading section operates to place the fixture on the conveying section 200; then the conveying section 200 conveys the fixture along the conveying channel 110 to transport the fixture into the preheating chamber 120; at the same time, the hot air generator 330 operates to blow out hot air, which is blown out through the first preheating cover 310 and the second preheating cover 320 and acts on the fixture to achieve preheating; then the conveying section 200 transports the preheated fixture into the injection chamber 130, at which point the first injection component 431 first injects resin into the fixture in a quantitative manner, then the vacuum defoaming mechanism 420 defoams the resin in the fixture, and finally the second injection component 432 replenishes the resin in the fixture to achieve injection molding; finally, the unloading section removes the injection molded fixture from the conveying section 200 and places it in a designated position, thereby completing the entire injection molding process.

[0032] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A resin injection molding machine, characterized in that, include: The machine base is provided with a conveying channel, which is provided with a preheating chamber and a molding chamber; A conveying unit is disposed in the conveying channel, and the conveying unit is used to convey the fixture along the conveying channel; A preheating section is provided in the preheating chamber. The preheating section includes a first preheating hood, a second preheating hood, and a hot air generator. The openings of the first preheating hood and the second preheating hood face the fixture. The hot air generator is connected to the first preheating hood and the second preheating hood respectively through pipes. A molding section is disposed in the molding chamber. The molding section includes a feeding mechanism, a molding mechanism, and a vacuum defoaming mechanism. The molding mechanism includes a first molding assembly and a second molding assembly. The feeding mechanism is connected to the first molding assembly and the second molding assembly respectively. The first molding assembly is used to quantitatively inject resin into the fixture. The second molding assembly is used to replenish resin into the fixture. The vacuum defoaming mechanism is disposed between the first molding assembly and the second molding assembly and is used to defoam the resin in the fixture.

2. The resin injection molding machine according to claim 1, characterized in that, The feeding mechanism includes a main agent tank, a hardener tank, and a mixing tank. The mixing tank is connected to the main agent tank and the hardener tank, respectively. The first injection molding assembly and the second injection molding assembly are connected to the mixing tank, respectively.

3. The resin injection molding machine according to claim 2, characterized in that, The mixing tank is equipped with a stirring mechanism, which includes a stirring shaft, stirring blades and a stirring motor. The stirring shaft is rotatably disposed inside the mixing tank, the stirring blades are disposed on the stirring shaft, and the stirring motor is connected to the stirring shaft.

4. The resin injection molding machine according to claim 2, characterized in that, The injection molding mechanism further includes a liquid level detection unit, which is used to detect the liquid level of the fixture. The liquid level detection unit is connected to the first injection molding assembly and the second injection molding assembly respectively.

5. The resin injection molding machine according to claim 4, characterized in that, Both the first injection molding assembly and the second injection molding assembly include a metering pump and an injection head, wherein the metering pump is connected to the mixing tank and the injection head is connected to the metering pump.

6. The resin injection molding machine according to claim 4, characterized in that, The first injection molding component has multiple injection heads, while the second injection molding component has only one injection head.

7. The resin injection molding machine according to claim 5, characterized in that, The first injection molding assembly and the second injection molding assembly further include a moving unit, which includes a first lateral moving module, a second lateral moving module, and a vertical moving module. The lateral moving direction of the first lateral moving module is perpendicular to the conveying direction of the conveying unit. The second lateral moving module is disposed on the first lateral moving module, and the lateral moving direction of the second lateral moving module is consistent with the conveying direction of the conveying unit. The vertical moving module is disposed on the second lateral moving module, and the injection head is disposed on the vertical moving module.

8. The resin injection molding machine according to claim 1, characterized in that, The vacuum defoaming mechanism includes a vacuum cover and a vacuum generator. The vacuum cover is positioned above the conveying channel and is used to cover the fixture. The vacuum cover has a connector, and the vacuum generator is connected to the connector.

9. The resin injection molding machine according to claim 8, characterized in that, The injection molding section also includes a lifting mechanism, which is located below the conveying channel and is used to drive the fixture closer to or further away from the vacuum hood.

10. The resin injection molding machine according to claim 1, characterized in that, It also includes a loading section and a unloading section, which are respectively located at the inlet end and outlet end of the conveying section. The loading section and the unloading section are used to load and unload the fixture, respectively.

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