CN218906185U - Active vacuum exhaust system for injection molding die - Google Patents
Active vacuum exhaust system for injection molding die Download PDFInfo
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- CN218906185U CN218906185U CN202223322447.XU CN202223322447U CN218906185U CN 218906185 U CN218906185 U CN 218906185U CN 202223322447 U CN202223322447 U CN 202223322447U CN 218906185 U CN218906185 U CN 218906185U
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Abstract
The utility model discloses an active vacuum exhaust system for an injection molding die, and belongs to the field of die exhaust. The active vacuum exhaust system for the injection molding die comprises a vacuum exhaust valve and a vacuum machine, wherein the vacuum exhaust valve is connected with the vacuum machine through a pipeline, the vacuum exhaust valve comprises a valve body, a valve rod and a driving component, the driving component drives the valve rod to move so as to control the air passage to open or close, the driving component is in communication connection with a control system of the vacuum machine, the control system of the vacuum machine is in communication connection with a displacement sensor on the injection molding machine for detecting a displacement signal of the injection molding machine, the displacement sensor is used for detecting the displacement signal of the injection molding machine, the actions of the vacuum machine and the vacuum exhaust valve are controlled according to the signal detected by the displacement sensor, the vacuum exhaust valve can be actively closed or opened, the closing time of the vacuum exhaust valve is more timely and accurate, the exhaust valve is fully and difficult to be blocked, and the injection molding quality and the service life of the exhaust valve are improved.
Description
Technical Field
The present utility model relates to mold venting systems, and more particularly to an active vacuum venting system for injection molding molds.
Background
In the injection molding field of injection molds such as die casting and injection molding, air in a mold cavity needs to be discharged in the process of mold injection. Along with the progress and development of technology, injection molds are also developing towards complicating and enlarging, and for molds with complex mold cavity structures and larger sizes, the requirement on mold exhaust is higher, and if the gas in the mold cavity cannot be smoothly exhausted, the defects of incomplete product pouring, air pockets and air holes in the product, and the like easily occur, so that the product is scrapped.
Currently, existing exhaust valves mainly comprise two types, namely a mechanical exhaust valve and an active exhaust valve. The mechanical exhaust valve belongs to a passive exhaust valve, and is usually opened by a mold structure in the mold closing process, the exhaust valve is exhausted when a mold cavity is poured, and the valve core is closed by using pouring melt to impact the exhaust valve when the mold cavity is filled. The mechanical exhaust valve does not need independent control, is convenient to use, but has complex structure and high manufacturing cost, and the molten liquid easily enters the exhaust valve to cause valve blockage, so that the maintenance and the maintenance are time-consuming and labor-consuming. Compared with a passive exhaust valve, the active exhaust valve is not easy to cause valve blocking, and the exhaust volume can be larger; at present, an active exhaust valve mainly actively controls the opening and closing of the exhaust valve according to a mold opening and closing signal of a mold, and how to accurately and timely control the opening and closing actions of the exhaust valve according to the mold opening and closing signal of the mold is one of the technical problems to be solved, because the exhaust valve is easy to cause insufficient exhaust due to early closing and easy to cause exhaust valve blockage due to late closing.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model aims to provide an active vacuum exhaust system for an injection molding die, which is used for solving the problem of rapid exhaust in the injection molding die cavity.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the utility model discloses an active vacuum exhaust system for an injection molding die, which comprises a vacuum exhaust valve and a vacuum machine, wherein the vacuum exhaust valve is connected with the vacuum machine through a pipeline, the vacuum exhaust valve is arranged on the die, the die is arranged on the injection molding machine, the vacuum exhaust valve comprises a valve body, a valve rod and a driving assembly, an air inlet and an air outlet are arranged on the valve body, the air inlet and the air outlet are communicated through an air passage arranged in the valve body, the valve rod is arranged in the air passage, the tail part of the valve rod is connected with the driving assembly, the driving assembly drives the valve rod to move so as to control the air passage to open or close, the driving assembly is in communication connection with a control system of the vacuum machine, and the control system of the vacuum machine is in communication connection with a displacement sensor on the injection molding machine for detecting a pressure injection displacement signal.
Still further, the injection molding machine is a die casting machine or an injection molding machine, and the mold is a die casting mold or an injection molding mold, respectively.
Further, the vacuum exhaust valve is arranged on the fixed die plate of the die, and the air inlet of the vacuum exhaust valve is communicated with the die cavity of the die.
Furthermore, the vacuum exhaust valve is embedded and installed on the fixed die plate through the parting surface of the fixed die plate, and one side of the fixed die plate is provided with a pipe joint hole corresponding to the exhaust port and a wiring jack corresponding to the driving assembly.
Furthermore, the driving assembly is in communication connection with a control system of the vacuum machine by adopting a quick-connect plug.
Further, the displacement sensor is a displacement electronic ruler arranged on the injection molding machine.
Furthermore, the driving assembly adopts an air cylinder or an oil cylinder, and an electromagnetic reversing valve is arranged on the air cylinder or the oil cylinder and is in communication connection with a control system of the vacuum machine.
Further, the driving assembly adopts a push-pull electromagnet, and the push-pull electromagnet is in communication connection with a control system of the vacuum machine.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) The utility model relates to an active vacuum exhaust system for an injection molding die, which comprises a vacuum exhaust valve and a vacuum machine, wherein the vacuum exhaust valve is connected with the vacuum machine through a pipeline, the vacuum exhaust valve comprises a valve body, a valve rod and a driving component, the driving component drives the valve rod to move so as to control an air passage to be opened or closed, the driving component is in communication connection with a control system of the vacuum machine, the control system of the vacuum machine is in communication connection with a displacement sensor on the injection molding machine, which is used for detecting a displacement signal of an injection part, the displacement sensor is used for detecting the displacement signal of the injection part, and the actions of the vacuum machine and the vacuum exhaust valve are controlled according to the signal detected by the displacement sensor, so that the vacuum exhaust valve can be actively closed or opened, the closing time of the vacuum exhaust valve is more timely and accurate, the exhaust valve is fully and difficult to be blocked, and the injection molding quality is improved and the service life of the exhaust valve is prolonged;
(2) The active vacuum exhaust system for the injection molding die is characterized in that the injection molding machine is a die casting machine or an injection molding machine, and the die is a die casting die or an injection molding die correspondingly, so that the rapid exhaust of the die casting die or the injection molding die can be ensured, and the active vacuum exhaust system is particularly suitable for rapid exhaust of large-scale injection molded parts;
(3) According to the active vacuum exhaust system for the injection molding die, the vacuum exhaust valve is arranged on the fixed die plate of the die, the air inlet of the vacuum exhaust valve is communicated with the die cavity of the die, and the positions of the vacuum exhaust valves are relatively fixed, so that the connection and arrangement of pipelines are facilitated;
(4) The utility model relates to an active vacuum exhaust system for an injection molding die, which is characterized in that a vacuum exhaust valve is embedded and installed on a fixed die plate by a parting surface of the fixed die plate, one side of the fixed die plate is provided with a pipe joint hole corresponding to an exhaust port and a wiring jack corresponding to a driving component, the embedded vacuum exhaust valve is favorable for sealing the periphery of a valve body, and particularly in the injection die, the vacuum exhaust valve can be installed on one side close to a die cavity as much as possible, the sealing surface of the die is favorable for increasing, and the problem of material flying at the exhaust valve can be effectively solved;
(5) According to the active vacuum exhaust system for the injection molding die, the driving component is in communication connection with the control system of the vacuum machine by adopting the quick-connection plug, so that the connection operation is quick, and the signal transmission is stable;
(6) According to the active vacuum exhaust system for the injection molding die, the driving assembly of the active vacuum exhaust system adopts the air cylinder or the oil cylinder, the electromagnetic directional valve is arranged on the air cylinder or the oil cylinder and is in communication connection with the control system of the vacuum machine, and the electromagnetic directional valve is close to the air cylinder or the oil cylinder in position, so that the reaction sensitivity of the air cylinder or the oil cylinder can be improved, and the action sensitivity of the vacuum exhaust valve is further improved; the driving component can also adopt a push-pull electromagnet which is in communication connection with a control system of the vacuum machine, and has high response speed and convenient control.
Drawings
FIG. 1 is a schematic diagram of an active vacuum exhaust system for an injection molding die according to the present utility model;
FIG. 2 is a schematic perspective view of a vacuum exhaust valve according to the present utility model;
FIG. 3 is a schematic top view of a vacuum exhaust valve according to the present utility model;
fig. 4 isbase:Sub>A schematic sectional view of the structure of fig. 3 in the directionbase:Sub>A-base:Sub>A.
Reference numerals in the schematic drawings illustrate:
100. a vacuum exhaust valve; 101. a valve body; 101a, an air inlet; 101b, exhaust port; 101c, airways; 102. a valve stem; 103. a drive assembly; 103a, a cylinder or an oil cylinder; 103b, an electromagnetic directional valve; 200. a mold; 201. a stationary mold plate; 202. a movable template; 300. a vacuum machine; 400. an injection molding machine; 401. a displacement sensor.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.
Example 1
Referring to fig. 1 to 4, an active vacuum exhaust system for an injection molding mold of the present embodiment includes a vacuum exhaust valve 100 and a vacuum machine 300, wherein the vacuum exhaust valve 100 is connected with the vacuum machine 300 through a pipe, the vacuum exhaust valve 100 is mounted on a mold 200, the mold 200 is mounted on an injection molding machine 400, and the vacuum machine 300 is used for exhausting the mold 200 through the vacuum exhaust valve 100 during injection molding, so as to ensure sufficient injection of a mold cavity. The vacuum exhaust valve 100 is an active exhaust valve, and comprises a valve body 101, a valve rod 102 and a driving assembly 103, wherein an air inlet 101a and an air outlet 101b are arranged on the valve body 101, the air inlet 101a and the air outlet 101b are communicated through an air passage 101c arranged in the valve body 101, the valve rod 102 is arranged in the air passage 101c, the tail part of the valve rod 102 is connected with the driving assembly 103, and the driving assembly 103 drives the valve rod 102 to move so as to control the air passage 101c to be opened or closed. One specific embodiment is that a cap head structure is arranged at the front end of the valve rod 102, and the valve rod 102 is controlled by the driving assembly 103 to realize the closing or opening of the cap head to the air inlet 101 a. The drive assembly 103 is communicatively coupled to a control system of the vacuum machine 300, and the control system of the vacuum machine 300 is communicatively coupled to a displacement sensor 401 on the injection molding machine 400 for detecting the shot placement signal. The "broken line" between the displacement sensor 401 and the vacuum machine 300, and between the vacuum machine 300 and the vacuum exhaust valve 100 in fig. 1 represents a signal transmission line, and the "solid line" between the vacuum machine 300 and the vacuum exhaust valve 100 represents a vacuum exhaust line. In the injection molding process, the displacement sensor 401 detects the displacement signal of the pressure injection part in real time, and feeds back the displacement signal to the control system of the vacuum machine 300, and the control system of the vacuum machine 300 controls the action of the driving component 103 of the vacuum machine 300 and the vacuum exhaust valve 100 according to the displacement signal, so that the vacuum exhaust valve 100 can be actively closed or opened, the operation parameters of the vacuum machine 300 and the driving component 103 are set according to the displacement sensor 401, the closing time of the vacuum exhaust valve 100 is more timely and accurate, the exhaust is sufficient and the exhaust valve is not easy to be blocked, and the injection molding quality and the service life of the exhaust valve are improved.
The active vacuum exhaust system for the injection molding die of the embodiment, in which the injection molding machine 400 is a die casting machine and the die 200 is a die casting mold correspondingly, can ensure the rapid exhaust of the die casting mold, and is particularly suitable for rapid exhaust of large-scale injection molded parts. Referring to fig. 1, the vacuum exhaust valve 100 is mounted on a fixed platen 201 of a mold 200, and an air inlet 101a of the vacuum exhaust valve 100 communicates with a cavity of the mold 200. In this way, the position of the vacuum vent valve 100 is relatively fixed, facilitating the connection and placement of the lines. Further, the vacuum exhaust valve 100 is fitted and mounted on the stationary platen 201 by the parting surface of the stationary platen 201, and one side of the stationary platen 201 is provided with a pipe interface hole positioned corresponding to the exhaust port 101b and a wiring insertion hole positioned corresponding to the driving assembly 103. The vacuum exhaust valve 100 is embedded to facilitate the sealing of the periphery of the valve body, and after the fixed die plate 201 and the movable die plate 202 are clamped, the die cavity is communicated with the air inlet 101a of the vacuum exhaust valve 100 through an exhaust gap. In the die casting mold, the vacuum exhaust valve 100 can be installed on one side close to the cavity as much as possible, which is beneficial to increasing the water sealing surface of the mold and can effectively solve the problem of material flying at the exhaust valve. In order to facilitate signal transmission, the driving assembly 103 is in communication connection with a control system of the vacuum machine 300 by adopting a quick-connection plug, such as an aviation plug, and the like, so that the connection operation is quick and the signal transmission is stable.
In the present embodiment, the displacement sensor 401 may be a sensor on the injection molding machine 400, specifically, the displacement sensor 401 is a displacement electronic ruler provided on the injection molding machine 400. The displacement electronic ruler can accurately reflect the punch signals of the die casting machine, and the exhaust valve can be timely and accurately closed when the die is completely filled, so that the exhaust valve is effectively prevented from being blocked. And moreover, by adopting the design of the valve rod driving exhaust valve, the exhaust aperture can be made larger, and the exhaust speed is faster. In this embodiment, the driving assembly 103 employs a cylinder or an oil cylinder 103a, and an electromagnetic directional valve 103b is mounted on the cylinder or the oil cylinder 103a, and the electromagnetic directional valve 103b is in communication connection with a control system of the vacuum machine 300. The electromagnetic directional valve 103b receives a control signal of a control system of the vacuum machine 300, controls the telescopic movement of the cylinder or the oil cylinder 103a to switch, and realizes the directional control of the cylinder or the oil cylinder 103 a. The electromagnetic directional valve 103b is integrally mounted on the cylinder or the oil cylinder 103a, and the electromagnetic directional valve 103b is positioned close to the cylinder or the oil cylinder 103a, so that the response sensitivity of the cylinder or the oil cylinder 103a can be improved, and the action sensitivity of the vacuum exhaust valve can be further improved. The cylinder or the oil cylinder 103a can be a customized small cylinder or oil cylinder, which is beneficial to the compactness of the whole structure of the exhaust valve; the existing conventional small-sized air cylinder or oil cylinder can be adopted, so that the manufacturing cost can be reduced.
Example 2
An active vacuum exhaust system for an injection molding die of this embodiment is the same as embodiment 1 in its basic structure and working principle, except that:
the injection molding machine 400 in this embodiment is an injection molding machine, and the mold 200 is an injection mold correspondingly. In operation, the control system of the vacuum machine 300 controls the operating states of the vacuum machine 300 and the vacuum exhaust valve 100 according to the injection displacement signal fed back by the displacement sensor 401 on the injection molding machine. The displacement sensor 401 is a displacement electronic ruler used for detecting a pressure injection displacement signal on the injection molding machine. By adopting the active vacuum exhaust system, the rapid exhaust of the injection mold, especially the large injection mold, is realized.
Example 3
The basic structure and the working principle of the active vacuum exhaust system for an injection molding die of this embodiment are the same as those of embodiment 1 or embodiment 2, except that:
in this embodiment, the driving unit 103 of the vacuum exhaust valve 100 is a push-pull electromagnet, and the push-pull electromagnet is in communication with the control system of the vacuum apparatus 300. The control system of the vacuum machine 300 can drive the push-pull electromagnet to act through the control circuit, so as to drive the valve rod 102 to stretch and retract, and has the advantages of high response speed, convenience in control and the like.
According to the active vacuum exhaust system for the injection molding die, the displacement sensor is used for detecting the displacement signal of the injection part, and the actions of the vacuum machine and the vacuum exhaust valve are controlled according to the signals detected by the displacement sensor, so that the vacuum exhaust valve can be actively closed or opened, the closing time of the vacuum exhaust valve is more timely and accurate, the exhaust is sufficient and the exhaust valve is not easy to block, and the injection molding quality and the service life of the exhaust valve are improved.
The utility model and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the utility model. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the gist of the present utility model, and all the structural manners and the embodiments belong to the protection scope of the present utility model.
Claims (8)
1. An active vacuum exhaust system for an injection molding die, comprising a vacuum exhaust valve (100) and a vacuum machine (300), wherein the vacuum exhaust valve (100) is connected with the vacuum machine (300) through a pipeline, the vacuum exhaust valve (100) is installed on the die (200), and the die (200) is installed on the injection molding machine (400), and the active vacuum exhaust system is characterized in that:
the vacuum exhaust valve (100) comprises a valve body (101), a valve rod (102) and a driving assembly (103), wherein an air inlet (101 a) and an air outlet (101 b) are formed in the valve body (101), the air inlet (101 a) and the air outlet (101 b) are communicated through an air passage (101 c) formed in the valve body (101), the valve rod (102) is arranged in the air passage (101 c), the tail part of the valve rod (102) is connected with the driving assembly (103), the driving assembly (103) drives the valve rod (102) to move so as to control the air passage (101 c) to be opened or closed, the driving assembly (103) is in communication connection with a control system of the vacuum machine (300), and a control system of the vacuum machine (300) is in communication connection with a displacement sensor (401) used for detecting a displacement signal of a pressure injection displacement on the injection molding machine (400).
2. The active vacuum venting system for an injection molding die of claim 1, wherein: the injection molding machine (400) is a die casting machine or an injection molding machine, and the mold (200) is a die casting mold or an injection molding mold, respectively.
3. The active vacuum venting system for an injection molding die of claim 2, wherein: the vacuum exhaust valve (100) is arranged on a fixed die plate (201) of the die (200), and an air inlet (101 a) of the vacuum exhaust valve (100) is communicated with a die cavity of the die (200).
4. An active vacuum venting system for an injection molding die as claimed in claim 3, wherein: the vacuum exhaust valve (100) is embedded and installed on the fixed template (201) through a parting surface of the fixed template (201), and one side of the fixed template (201) is provided with a pipe joint hole with a position corresponding to the exhaust port (101 b) and a wiring jack with a position corresponding to the driving assembly (103).
5. The active vacuum venting system for an injection molding die of claim 4, wherein: the driving assembly (103) is in communication connection with a control system of the vacuum machine (300) through a quick-connect plug.
6. The active vacuum venting system for an injection molding die of claim 2, wherein: the displacement sensor (401) is a displacement electronic ruler arranged on the injection molding machine (400).
7. The active vacuum exhaust system for an injection molding die according to any one of claims 1 to 6, characterized in that: the driving assembly (103) adopts an air cylinder or an oil cylinder (103 a), an electromagnetic directional valve (103 b) is arranged on the air cylinder or the oil cylinder (103 a), and the electromagnetic directional valve (103 b) is in communication connection with a control system of the vacuum machine (300).
8. The active vacuum exhaust system for an injection molding die according to any one of claims 1 to 6, characterized in that: the driving assembly (103) adopts a push-pull electromagnet, and the push-pull electromagnet is in communication connection with a control system of the vacuum machine (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223322447.XU CN218906185U (en) | 2022-12-12 | 2022-12-12 | Active vacuum exhaust system for injection molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223322447.XU CN218906185U (en) | 2022-12-12 | 2022-12-12 | Active vacuum exhaust system for injection molding die |
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| Publication Number | Publication Date |
|---|---|
| CN218906185U true CN218906185U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223322447.XU Active CN218906185U (en) | 2022-12-12 | 2022-12-12 | Active vacuum exhaust system for injection molding die |
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| CN (1) | CN218906185U (en) |
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- 2022-12-12 CN CN202223322447.XU patent/CN218906185U/en active Active
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