Intelligent exhaust device of DCPD equipment and process of intelligent exhaust device

Abstract

The invention relates to the technical field of DCPD equipment intelligent exhaust devices, and discloses a DCPD equipment intelligent exhaust device and a technology thereof.The DCPD equipment intelligent exhaust device comprises a mold, a PLC console, an injection machine, a mold closing machine and a vacuum machine, the injection machine, the mold closing machine and the vacuum machine are electrically connected with the PLC console, and the PLC console is used for controlling opening and closing of the injection machine, the mold closing machine and the vacuum machine; the mold comprises a lower mold plate and an upper mold plate matched with the upper mold plate, a pouring channel used for being communicated with an injection machine is formed in one side of the lower mold plate, a cavity is formed between the lower mold plate and the upper mold plate in a matched mode, and a main exhaust channel and an auxiliary exhaust channel are formed in the upper mold plate and both communicated with the cavity. And the PLC console is also used for automatically setting and controlling the injection molding time so as to control whether the main exhaust channel and the auxiliary exhaust channel exhaust or not. Therefore, gas in the mold is exhausted more thoroughly, the pressure in the mold is reduced, rapid molding of products is facilitated, and the production quality of the products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent exhaust devices for DCPD equipment, and in particular to intelligent exhaust devices for DCPD equipment and processes thereof. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. The injection mold consists of a movable mold and a fixed mold. The movable mold is installed on the movable mold plate of the injection molding machine, and the fixed mold is installed on the fixed mold plate of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product.

[0003] Nowadays, during the injection molding process of the mold, the air inside the mold is prone to poor exhaust, and the product is prone to produce more bubbles, which can easily cause product quality problems. In the existing technology, exhaust mostly adopts a single exhaust method, such as opening an exhaust groove to exhaust, vacuum exhaust or using gap exhaust. A single exhaust method is prone to cause insufficient exhaust and cannot completely solve the product quality problems caused by trapped air. Summary of the invention

[0004] In order to solve the problem that during the injection molding process of the existing mold, the air inside the mold is prone to poor exhaust, the product is prone to produce more bubbles, and it is easy to cause product quality problems, in the prior art, exhaust mostly adopts a single exhaust method, such as opening an exhaust groove for exhaust, vacuum exhaust or using gap exhaust. The single exhaust method is prone to cause insufficient exhaust and cannot completely solve the product quality problems caused by trapped air. The present application provides an intelligent exhaust device for DCPD equipment and a process thereof.

[0005] The DCPD equipment intelligent exhaust device and its process provided in this application adopt the following technical solutions:

[0006] The DCPD is equipped with an intelligent exhaust device, including a mold, a PLC console, and an injection molding machine, a mold clamping machine, and a vacuum machine electrically connected to the PLC console. The PLC console is used to control the opening and closing of the injection molding machine, the mold clamping machine, and the vacuum machine. The mold includes a lower template and an upper template matching the upper template. A casting channel for connecting to the injection molding machine is opened on one side of the lower template. A cavity is formed between the lower template and the upper template. A main exhaust channel and an auxiliary exhaust channel are respectively opened inside the upper template. The main exhaust channel and the auxiliary exhaust channel are both connected to the cavity. The PLC console is also used to automatically set and control the injection time to control whether the main exhaust channel and the auxiliary exhaust channel are exhausted.

[0007] Preferably, a first connection port and a second connection port are respectively installed on the outer sides of the main exhaust channel and the auxiliary exhaust channel, which are used to connect with a vacuum machine to extract the gas in the cavity.

[0008] Preferably, solenoid valves are installed inside the first connection port and the second connection port for controlling the opening and closing of the main exhaust channel and the auxiliary exhaust channel, and the solenoid valves are electrically connected to the PLC console.

[0009] Preferably, one-way valves are installed inside the ends of the main exhaust channel and the auxiliary exhaust channel that are in contact with the cavity, and the one-way valves only allow the gas in the cavity to be discharged outward, and do not allow external gas to enter the cavity.

[0010] The one-way valve installed in the auxiliary exhaust channel adopts a porous metal valve plate, so that gas can pass through the porous metal valve plate and liquid can be prevented from passing through the porous metal valve plate.

[0011] The aperture of the main exhaust channel is larger than that of the auxiliary exhaust channel.

[0012] DCPD is equipped with an intelligent exhaust process, and the exhaust process steps are as follows:

[0013] Step 1: First, start the mold clamping machine through the PLC console control to drive the upper mold plate and the lower mold plate to close the mold;

[0014] Step 2: Then, the solenoid valves in the main exhaust channel and the auxiliary exhaust channel are controlled to be in an open state through the PLC console, and then the vacuum machine is controlled to be turned on to extract the air accumulated in the cavity 13. During this process, the PLC console controls the setting of the injection machine not to inject liquid first;

[0015] Step 3: After the air accumulated in the cavity is extracted, the injection machine is finally controlled to start and the liquid is injected into the cavity through the pouring channel until the injection is completed. During this process, the solenoid valve in the main exhaust channel is controlled to be in a closed state and the solenoid valve in the auxiliary exhaust channel is in an open state through the PLC console. The auxiliary exhaust channel is opened to continue to extract the evaporated water vapor and partially decomposed gas of the injection liquid, so that the gas in the mold can be discharged more thoroughly.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The DCPD is equipped with an intelligent exhaust device. The injection time can be automatically set and controlled through the PLC console to control the opening and closing of the solenoid valve, so as to control the connection between the main exhaust channel and the auxiliary exhaust channel. Before injecting the liquid, the vacuum machine can extract the air in the mold through the main exhaust channel and the auxiliary exhaust channel in sequence, thereby improving the exhaust efficiency. When injecting the liquid, the main exhaust channel is closed and the auxiliary exhaust channel is connected at the same time, so that the vacuum machine continues to extract the evaporated water vapor and partially decomposed gas of the injected liquid through the auxiliary exhaust channel, so that the gas in the mold is discharged more thoroughly, reducing the pressure in the mold, which is conducive to rapid molding of the product and improving the production quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the mold of the intelligent steam exhaust device for DCPD equipment in the present invention;

[0019] Figure 2 The figure is a flow chart of the intelligent exhaust process of the DCPD equipment in the present invention.

[0020] Explanation of the accompanying drawings: 1. Lower template; 2. Upper template; 3. Casting channel; 4. Main exhaust channel; 5. Auxiliary exhaust channel; 6. Cavity; 7. First connection port; 8. Second connection port; 9. One-way valve; 10. Solenoid valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 to Figure 2 , the present invention provides the following embodiments:

[0023] Embodiment 1:

[0024] The DCPD is equipped with an intelligent exhaust device, including a mold, a PLC console, and an injection molding machine, a mold clamping machine, and a vacuum machine electrically connected to the PLC console. The PLC console is used to control the opening and closing of the injection molding machine, the mold clamping machine, and the vacuum machine. The mold includes a lower template 1 and an upper template 2 matching the upper template 2. A casting channel 3 for connecting to the injection molding machine is provided on one side of the lower template 1. A cavity 6 is formed between the lower template 1 and the upper template 2. A main exhaust channel 4 and an auxiliary exhaust channel 5 are respectively provided inside the upper template 2. The main exhaust channel 4 and the auxiliary exhaust channel 5 are both connected to the cavity 6. The PLC console is also used to automatically set and control the injection time to control whether the main exhaust channel 4 and the auxiliary exhaust channel 5 are exhausted.

[0025] During operation, the injection time is automatically set and controlled through the PLC console. Before injection, the main exhaust channel 4 and the auxiliary exhaust channel 5 are controlled to perform two-way exhaust at the same time. During injection, the auxiliary exhaust channel 5 is controlled to perform unidirectional auxiliary exhaust, so that the gas in the mold can be discharged more fully, which is beneficial to the rapid filling of the mold, thereby improving the qualified rate of product processing. It should be noted that a controller is installed inside the PLC console, and the controller can adopt an existing STM32 microcontroller.

[0026] A first connection port 7 and a second connection port 8 are respectively installed on the outside of the main exhaust channel 4 and the auxiliary exhaust channel 5 , which are used to connect with a vacuum machine to extract the gas in the cavity 6 .

[0027] Solenoid valves 10 are installed inside the first connection port 7 and the second connection port 8 for controlling the opening and closing of the main exhaust channel 4 and the auxiliary exhaust channel 5. The solenoid valves 10 are electrically connected to the PLC console, and the solenoid valves 10 are switched on and off by the PLC console to control the opening and closing of the main exhaust channel 4 and the auxiliary exhaust channel 5.

[0028] One-way valves 9 are installed inside the ends of the main exhaust channel 4 and the auxiliary exhaust channel 5 that are in contact with the cavity 6. The one-way valves 9 only allow the gas in the cavity 6 to be discharged to the outside, and do not allow external gas to enter the cavity 6.

[0029] The one-way valve 9 installed in the auxiliary exhaust channel 5 adopts a porous metal valve plate, so that gas can pass through the porous metal valve plate, and at the same time, liquid can be prevented from passing through the porous metal valve plate.

[0030] The aperture of the main exhaust channel 4 is larger than that of the auxiliary exhaust channel 5. When exhausting, the exhaust rate through the main exhaust channel 4 is greater than that through the auxiliary exhaust channel 5, so that the auxiliary exhaust channel 5 can still be exhausted during injection molding.

[0031] Embodiment 2:

[0032] This embodiment provides a DCPD equipment intelligent exhaust process, which is used for the DCPD equipment intelligent exhaust device in Embodiment 1. The exhaust process steps are as follows:

[0033] Step 1: First, the mold clamping machine is turned on through the PLC console control to drive the upper mold plate 2 and the lower mold plate 1 to close the mold;

[0034] Step 2: Then, the solenoid valves in the main exhaust channel 4 and the auxiliary exhaust channel 5 are controlled to be in an open state through the PLC console, and then the vacuum machine is controlled to be turned on to extract the air accumulated in the cavity 6. During this process, the PLC console controls the setting of the injection machine not to inject liquid first;

[0035] Step three: After the air accumulated in the cavity 6 is extracted, the injection machine is finally controlled to start and liquid is injected into the cavity 6 through the pouring channel 3 until the injection is completed. During this process, the solenoid valve in the main exhaust channel 4 is controlled to be in a closed state and the solenoid valve in the auxiliary exhaust channel 5 is in an open state through the PLC console. The auxiliary exhaust channel 5 is opened to continue to extract the evaporated water vapor and partially decomposed gas of the injected liquid, so that the gas in the mold can be discharged more thoroughly.

[0036] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0037] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0038] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The DCPD is equipped with an intelligent exhaust device, including a mold, a PLC console, and an injection machine, a mold clamping machine, and a vacuum machine electrically connected to the PLC console. The PLC console is used to control the opening and closing of the injection machine, the mold clamping machine, and the vacuum machine. The characteristics are: The mold comprises a lower mold plate (1) and an upper mold plate (2) matched with the upper mold plate (2); a casting channel (3) for connecting to an injection molding machine is provided on one side of the lower mold plate (1); a mold cavity (6) is formed between the lower mold plate (1) and the upper mold plate (2); a main exhaust channel (4) and an auxiliary exhaust channel (5) are respectively provided inside the upper mold plate (2); the main exhaust channel (4) and the auxiliary exhaust channel (5) are both connected to the mold cavity (6); the PLC console is also used for automatically setting and controlling the injection molding time, thereby controlling whether the main exhaust channel (4) and the auxiliary exhaust channel (5) are exhausted.

2. The DCPD equipment intelligent exhaust device according to claim 1, characterized in that: A first connection port (7) and a second connection port (8) are respectively installed on the outside of the main exhaust channel (4) and the auxiliary exhaust channel (5), and are used to connect with a vacuum machine to extract gas from the cavity (6).

3. The DCPD equipment intelligent exhaust device according to claim 2 is characterized in that: The first connection port (7) and the second connection port (8) are both internally installed with a solenoid valve (10) for controlling the opening and closing of the main exhaust channel (4) and the auxiliary exhaust channel (5); the solenoid valve (10) is electrically connected to the PLC console.

4. The DCPD equipment intelligent exhaust device according to claim 3 is characterized in that: One-way valves (9) are installed inside the ends of the main exhaust channel (4) and the auxiliary exhaust channel (5) that are in contact with the mold cavity (6). The one-way valves (9) only allow the gas in the mold cavity (6) to be discharged to the outside, and do not allow external gas to enter the mold cavity (6).

5. The DCPD equipment intelligent exhaust device according to claim 4 is characterized in that: The one-way valve (9) installed in the auxiliary exhaust passage (5) adopts a porous metal valve plate, so that gas can pass through the porous metal valve plate, while preventing liquid from passing through the porous metal valve plate.

6. The DCPD equipment intelligent exhaust device according to claim 5, characterized in that: The aperture of the main exhaust channel (4) is larger than that of the auxiliary exhaust channel (5). 7.DCPD is equipped with intelligent exhaust technology, which is characterized by: The DCPD equipment intelligent exhaust device according to any one of claims 1 to 6, wherein the exhaust process steps are as follows: Step 1: First, the mold clamping machine is turned on through the PLC console control, driving the upper mold plate (2) and the lower mold plate (1) to close the mold; Step 2: Then, the solenoid valves in the main exhaust channel (4) and the auxiliary exhaust channel (5) are controlled to be in an open state through the PLC console, and then the vacuum machine is controlled to be turned on to extract the air accumulated in the cavity (6). During this process, the PLC console controls and sets the injection machine not to inject liquid first; Step 3: After the air accumulated in the cavity (6) is completely extracted, the injection molding machine is finally controlled to start, and liquid is injected into the cavity (6) through the pouring channel (3) until the injection is completed. During this process, the solenoid valve in the main exhaust channel (4) is controlled to be in a closed state, and the solenoid valve in the auxiliary exhaust channel (5) is controlled to be in an open state through the PLC console. The auxiliary exhaust channel (5) is opened to continue to extract the evaporated water vapor and partially decomposed gas of the injected liquid, so that the gas in the mold can be discharged more thoroughly.

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